阅读说明：本技术 一种薄膜包装装置及薄膜包装方法 (Film packaging device and film packaging method ) 是由 陈健 于 2020-05-12 设计创作，主要内容包括：本申请实施例公开了一种薄膜包装装置及薄膜包装方法。所述薄膜包装装置可以包括送料装置、薄膜输入机构、薄膜夹送机构、薄膜折叠机构、推料机构和输出机构。其中,所述薄膜夹送机构与所述薄膜输入机构相衔接。所述薄膜折叠机构设置在所述薄膜夹送机构上方。所述推料机构设置在所述薄膜折叠机构上方。所述输出机构与所述薄膜折叠机构相衔接。所述送料装置设置在所述薄膜折叠机构下方。本申请实施例的薄膜包装装置结构紧凑、低成本、可调整包装尺寸、包装速度快、动作及流程可编辑程度高,可前后对接流水线以实现自动生产。因此,该薄膜包装装置是一种可以满足多包装尺寸、多包装类型、高包装速度、流水线式包装等要求的高效率的包装设备。(The embodiment of the application discloses a film packaging device and a film packaging method. The film packaging device can comprise a feeding device, a film input mechanism, a film clamping and conveying mechanism, a film folding mechanism, a material pushing mechanism and an output mechanism. Wherein, the film clamping and conveying mechanism is connected with the film input mechanism. The film folding mechanism is arranged above the film clamping and conveying mechanism. The material pushing mechanism is arranged above the film folding mechanism. The output mechanism is connected with the film folding mechanism. The feeding device is arranged below the film folding mechanism. The film packaging device of the embodiment of the application has the advantages of compact structure, low cost, adjustable packaging size, high packaging speed, high editing degree of actions and flows, and capability of realizing automatic production by butting the assembly lines front and back. Therefore, the film packaging device is a high-efficiency packaging device which can meet the requirements of multiple package sizes, multiple package types, high packaging speed, assembly line type packaging and the like.)

1. The film packaging device is characterized by comprising a feeding device (1), a film input mechanism (2), a film clamping and conveying mechanism (3), a film folding mechanism (4), a material pushing mechanism (5) and an output mechanism (6);

wherein the film clamping and conveying mechanism (3) is connected with the film input mechanism (2); the film folding mechanism (4) is arranged above the film clamping and conveying mechanism (3); the material pushing mechanism (5) is arranged above the film folding mechanism (4); the output mechanism (6) is connected with the film folding mechanism (4); the feeding device (1) is arranged below the film folding mechanism (4).

2. The film wrapping apparatus according to claim 1, wherein said film feeding mechanism (2) comprises a lower carrying plate (2-100), an upper limiting plate (2-200) and a film cutting means;

a plurality of first gaps (2-110) are arranged at the output end of the lower bearing plate (2-100);

a plurality of second gaps (2-210) are arranged at the output end of the upper limiting plate (2-200);

the upper limiting plate (2-200) is arranged above the lower bearing plate (2-100) at intervals, so that a film input gap (2-300) is formed between the upper limiting plate (2-200) and the lower bearing plate (2-100), and each second notch (2-210) is respectively aligned with one first notch (2-110);

the film cutting device comprises a film cutting blade (2-410);

the film cutting blade (2-410) is arranged above the front ends of the output ends of the lower bearing plate (2-100) and the upper limiting plate (2-200).

3. The film wrapping apparatus according to claim 1, wherein said film gripping mechanism (3) comprises a first holding member support rod (3-100), a second holding member support rod (3-200), a first film holding member (3-300), a second film holding member (3-400), a first holding member driving means (3-500) and a second holding member driving means (3-600);

the first clamping component supporting rod (3-100) and the second clamping component supporting rod (3-200) are arranged in parallel at intervals;

one ends of the first film clamping assembly (3-300) and the second film clamping assembly (3-400) are respectively connected to the first clamping assembly supporting rod (3-100) in a sliding manner, and the other ends of the first film clamping assembly (3-300) and the second film clamping assembly (3-400) are respectively connected to the second clamping assembly supporting rod (3-200) in a sliding manner;

the first clamping assembly driving device (3-500) is connected with the first film clamping assembly (3-300) through a first film feeding transmission assembly (3-700);

the second clamping component driving device (3-600) is connected with the second film clamping component (3-400) through a second film feeding transmission component (3-800).

4. The film wrapping apparatus according to claim 1, wherein said film folding mechanism (4) comprises a first push plate (4-100), a second push plate (4-200), a third push plate (4-300), a push plate support member (4-400), a push plate support rod (4-500), a first push plate driving means (4-600), a second push plate driving means (4-700);

one ends of the first push plate (4-100) and the second push plate (4-200) are slidably connected to the push plate supporting rods (4-500), and the other ends of the first push plate (4-100) and the second push plate (4-200) are slidably connected to the push plate supporting assembly (4-400);

the first push plate driving device (4-600) is respectively connected with the first push plate (4-100) and the second push plate (4-200) through a first push plate transmission assembly (4-800), so that the first push plate driving device (4-600) can drive the first push plate (4-100) and the second push plate (4-200) to simultaneously move in opposite directions through the first push plate transmission assembly (4-800);

the third push plate (4-300) is arranged above the first push plate (4-100) and the second push plate (4-200) in parallel; and the second push plate driving device (4-700) is connected with the third push plate (4-300) through a second push plate transmission assembly (4-900), so that the second push plate driving device (4-00) can drive the third push plate (4-300) to move along a direction perpendicular to the moving direction of the first push plate (4-100) and the second push plate (4-200) through the second push plate transmission assembly (4-900).

5. The film wrapping device according to claim 1, wherein the pushing mechanism (5) comprises a pushing member (5-100), a pushing transmission assembly (5-200) and a pushing member driving device (5-300);

the material pushing component (5-100) is connected to the material pushing transmission component (5-200);

the pushing transmission assembly (5-200) is in transmission connection with the pushing element driving device (5-300).

6. The film wrapping apparatus according to claim 1, wherein said output mechanism (6) comprises a heated roller (6-100); the heating rollers (6-100) are connected with the film folding mechanism (4).

7. The film wrapping apparatus according to claim 6, wherein said output mechanism (6) further comprises a delivery output device (6-200); the conveying output device (6-200) is connected with the heating roller (6-100).

8. The film wrapping apparatus according to claim 1, wherein said feeding means (1) comprises a first support member (1-110), a second support member (1-120), a first conveying mechanism (1-200), a second conveying mechanism (1-300), a tray mechanism (1-400), a lifting mechanism (1-500), a first article detecting means (1-600), a second article detecting means (1-700), and a third article detecting means (1-800);

wherein the first support (1-110) and the second support (1-120) are parallel to each other and arranged on the same horizontal plane at intervals;

the first conveying mechanism (1-200) and the second conveying mechanism (1-300) are sequentially arranged on the first supporting piece (1-110) and the second supporting piece (1-120) along the feeding direction;

and a lifting channel is arranged in the second conveying mechanism (1-300);

the bracket mechanism (1-400) is arranged below the second conveying mechanism (1-300);

the lifting mechanism (1-500) is connected with the bracket mechanism (1-400), so that the bracket mechanism (1-400) can pass through the lifting channel to complete lifting or descending actions under the driving of the lifting mechanism (1-500);

wherein the first article detection device (1-600) corresponds in position to the first conveyor mechanism (1-200);

the second article detection device (1-700) corresponds to the joint position of the first conveying mechanism (1-200) and the second conveying mechanism (1-300);

the third article detection device (1-800) corresponds to the middle or tail position of the second conveying mechanism (1-300).

9. The film wrapping apparatus according to claim 3 wherein said film wrapping apparatus further comprises control means;

the feeding device (1), the film input mechanism (2), the film clamping and conveying mechanism (3), the film folding mechanism (4), the material pushing mechanism (5) and the output mechanism (6) are respectively connected with the control device.

10. A film wrapping method, characterized in that it comprises:

a film conveying step: conveying the film for packaging to a packaging position through a film clamping and conveying mechanism;

feeding: conveying an article to be packaged to the lower part of a film for packaging through a feeding device, covering the upper part of the article to be packaged with the film for packaging, and driving the article to be packaged and the film for packaging to ascend simultaneously;

film packaging: the side part of the film for packaging is folded to the bottom of the article to be packaged through a film folding mechanism, and the folded film for packaging and the article to be packaged are pushed to the output mechanism through a material pushing mechanism;

an output step: heating and sealing the packaging film at the bottom of the article to be packaged through the output mechanism to complete packaging; and outputting the packaged articles.

Technical Field

The invention relates to the technical field of packaging machines, in particular to a film packaging device and a film packaging method.

Background

The automatic preservative film packaging machine, the automatic stretch film packaging machine and other similar packaging machines are commonly used in various fresh bases, distribution centers and other occasions.

However, the existing preservative film packaging machine cannot meet the requirements of multiple packaging sizes, multiple packaging types, high packaging speed, assembly line type packaging and the like.

Disclosure of Invention

In response to the deficiencies of the prior art, one aspect of the present invention provides a film wrapping apparatus.

The film packaging device can comprise a feeding device, a film input mechanism, a film clamping and conveying mechanism, a film folding mechanism, a material pushing mechanism and an output mechanism. Wherein, the film clamping and conveying mechanism is connected with the film input mechanism. The film folding mechanism is arranged above the film clamping and conveying mechanism. The material pushing mechanism is arranged above the film folding mechanism. The output mechanism is connected with the film folding mechanism. The feeding device is arranged below the film folding mechanism.

According to a preferred embodiment, the film feeding mechanism comprises a lower carrier plate, an upper limiting plate and a film cutting device. The output end of the lower bearing plate is provided with a plurality of first notches. And a plurality of second notches are arranged at the output end of the upper limiting plate. The upper limiting plate is arranged above the lower bearing plate at intervals, so that a film input gap is formed between the upper limiting plate and the lower bearing plate, and each second notch is aligned with one first notch. The film cutting device comprises a film cutting blade. The film cutting blade is arranged above the front ends of the output ends of the lower bearing plate and the upper limiting plate.

According to a preferred embodiment, the film clamping and conveying mechanism comprises a first clamping assembly support rod, a second clamping assembly support rod, a first film clamping assembly, a second film clamping assembly, a first clamping assembly driving device and a second clamping assembly driving device. The first clamping component supporting rod and the second clamping component supporting rod are arranged in parallel at intervals. One ends of the first film clamping assembly and the second film clamping assembly are connected to the first clamping assembly supporting rod in a sliding mode respectively, and the other ends of the first film clamping assembly and the second film clamping assembly are connected to the second clamping assembly supporting rod in a sliding mode respectively. The first clamping assembly driving device is connected with the first film clamping assembly through a first film feeding transmission assembly. And the second clamping component driving device is connected with the second film clamping component through a second film feeding transmission component.

According to a preferred embodiment, the film folding mechanism comprises a first push plate, a second push plate, a third push plate, a push plate supporting assembly, a push plate supporting rod, a first push plate driving device and a second push plate driving device. One end of the first push plate and one end of the second push plate are slidably connected to the push plate supporting rod, and the other end of the first push plate and the other end of the second push plate are slidably connected to the push plate supporting component. The first push plate driving device is respectively connected with the first push plate and the second push plate through a first push plate transmission assembly, so that the first push plate driving device can drive the first push plate and the second push plate to simultaneously move reversely through the first push plate transmission assembly. The third push plate is arranged above the first push plate and the second push plate in parallel. And the second push plate driving device is connected with the third push plate through a second push plate transmission assembly, so that the second push plate driving device can drive the third push plate to move along the direction vertical to the moving direction of the first push plate and the second push plate through the second push plate transmission assembly.

According to a preferred embodiment, the pushing mechanism comprises a pushing member, a pushing transmission assembly and a pushing member driving device. The pushing piece is connected to the pushing transmission assembly. The pushing transmission assembly is in transmission connection with the pushing piece driving device.

According to a preferred embodiment, the output mechanism comprises a heated roller. The heating roller is connected with the film folding mechanism.

According to a preferred embodiment, the output mechanism further comprises a transport output. The conveying output device is connected with the heating roller.

According to a preferred embodiment, the feeding device comprises a first support, a second support, a first conveying mechanism, a second conveying mechanism, a bracket mechanism, a lifting mechanism, a first article detection device, a second article detection device and a third article detection device. The first supporting piece and the second supporting piece are parallel to each other and are arranged on the same horizontal plane at intervals. The first conveying mechanism and the second conveying mechanism are sequentially arranged on the first supporting piece and the second supporting piece along the feeding direction. And a lifting channel is arranged in the second conveying mechanism. The bracket mechanism is arranged below the second conveying mechanism. The lifting mechanism is connected with the bracket mechanism, so that the bracket mechanism can pass through the lifting channel under the driving of the lifting mechanism to finish the lifting or descending action. Wherein the first article detection device corresponds to the first conveyor mechanism. And the second article detection device corresponds to the joint position of the first conveying mechanism and the second conveying mechanism. And the third article detection device corresponds to the middle part or the tail part of the second conveying mechanism.

According to a preferred embodiment, the first film clamping assembly and the second film clamping assembly are both a pneumatic clamping assembly, a hydraulic clamping assembly, an electric clamping assembly, a magnetic clamping assembly, an electrostatic adsorption type clamping assembly or an adhesive type clamping assembly.

According to a preferred embodiment, the film wrapping means further comprises control means. The feeding device, the film input mechanism, the film clamping and conveying mechanism, the film folding mechanism, the material pushing mechanism and the output mechanism are respectively connected with the control device.

Another aspect of the invention provides a film wrapping method.

The film packaging method comprises the following steps:

a film conveying step: conveying the film for packaging to a packaging position through a film clamping and conveying mechanism;

feeding: conveying an article to be packaged to the lower part of a film for packaging through a feeding device, covering the upper part of the article to be packaged with the film for packaging, and driving the article to be packaged and the film for packaging to ascend simultaneously;

film packaging: the side part of the film for packaging is folded to the bottom of the article to be packaged through a film folding mechanism, and the folded film for packaging and the article to be packaged are pushed to the output mechanism through a material pushing mechanism;

an output step: heating and sealing the packaging film at the bottom of the article to be packaged through the output mechanism to complete packaging; and outputting the packaged articles.

Compared with the prior art, the film packaging device and the film packaging method provided by the embodiment of the invention have the following beneficial effects:

the film packaging device provided by the embodiment of the invention has the advantages of compact structure, low cost, adjustable packaging size, high packaging speed and high editing degree of actions and processes, and can be butted with a production line front and back to realize automatic production. Therefore, the film packaging device is a high-efficiency packaging device which can meet the requirements of multiple package sizes, multiple package types, high packaging speed, assembly line type packaging and the like. By adopting the film packaging method provided by the embodiment of the invention, automatic production can be carried out by a front-back butt-joint assembly line, and assembly line type high-efficiency packaging can be realized.

Additional features of the invention will be set forth in part in the description which follows. Additional features of some aspects of the invention will become apparent to those of ordinary skill in the art upon examination of the following description and accompanying drawings or may be learned by the manufacture or operation of the embodiments. The features of the present disclosure may be realized and attained by practice or use of various methods, instrumentalities and combinations of the specific embodiments described below.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention. Like reference symbols in the various drawings indicate like elements. Wherein the content of the first and second substances,

FIG. 1 is a schematic diagram of the construction of a film wrapping apparatus according to some embodiments of the present invention;

FIG. 2 is a schematic view of the feed assembly of the film wrapping apparatus according to some embodiments of the present invention;

FIG. 3 is a schematic illustration of an exploded view of a feed device according to some embodiments of the present invention;

FIG. 4 is a bottom view of a feeding device according to some embodiments of the present invention;

fig. 5 and 6 are schematic structural views illustrating a tray mechanism in a raised state in the feeding device according to some embodiments of the invention;

FIG. 7 is a schematic diagram of the first and second transport mechanisms of the feeder device according to some embodiments of the present invention;

FIG. 8 is a schematic diagram of a structure of a carriage mechanism in a feeder according to some embodiments of the present invention;

FIG. 9 is an enlarged view at A of FIG. 8;

FIG. 10 is a schematic diagram of the construction of the elevator mechanism in the feeder according to some embodiments of the present invention;

FIG. 11 is a schematic diagram of a thin film input mechanism according to some embodiments of the present invention;

FIG. 12 is a schematic diagram of a film pinch mechanism according to some embodiments of the present invention;

FIG. 13 is a schematic structural view of a magnetic clamping assembly according to some embodiments of the present invention;

FIG. 14 is a front view of a magnetic clamping assembly according to some embodiments of the present invention;

FIG. 15 is a top view of a magnetic clamping assembly according to some embodiments of the present invention;

FIG. 16 is a sectional view A-A of FIG. 15;

FIG. 17 is an enlarged view at C of FIG. 16;

FIG. 18 is a schematic diagram of a film pinch mechanism according to some embodiments of the present invention;

FIG. 19 is a schematic diagram of a film folding mechanism according to some embodiments of the present invention;

FIG. 20 is a schematic diagram of the construction of a pusher mechanism according to some embodiments of the present invention;

FIG. 21 is a schematic structural view of an output mechanism according to some embodiments of the present invention;

fig. 22, 23 are schematic illustrations of a packaging process according to some embodiments of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if the terms "first", "second", etc. are used in the description and claims of the present invention and in the accompanying drawings, they are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, if the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, in the present invention, the terms "mounted," "disposed," "provided," "connected," "sleeved," and the like should be construed broadly if they are referred to. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

One aspect of an embodiment of the present invention discloses a film wrapping apparatus.

As shown in fig. 1, the film wrapping apparatus may include a feeding device 1, a film input mechanism 2, a film pinch mechanism 3, a film folding mechanism 4, a material pushing mechanism 5, and an output mechanism 6. Wherein, the film clamping and conveying mechanism 3 is connected with the film input mechanism 2. The film folding mechanism 4 is arranged above the film clamping and conveying mechanism 3. The material pushing mechanism 5 is arranged above the film folding mechanism 4. The output mechanism 6 is connected with the film folding mechanism 4. The feeding device 1 is arranged below the film folding mechanism 4.

As shown in fig. 2 to 10, the feeding device 1 may include a first support 1-110, a second support 1-120, a first conveying mechanism 1-200, a second conveying mechanism 1-300, a tray mechanism 1-400, a lifting mechanism 1-500, a first article detecting device 1-600, a second article detecting device 1-700, and a third article detecting device 1-800. Wherein, the first supporting piece 1-110 and the second supporting piece 1-120 are parallel to each other and arranged on the same horizontal plane at intervals. The first conveying mechanism 1-200 and the second conveying mechanism 1-300 are sequentially arranged on the first supporting piece 1-110 and the second supporting piece 1-120 along the feeding direction. And a lifting passage is provided in the second conveyance mechanism 1-300. The carriage mechanism 1-400 is disposed below the second conveying mechanism 1-300. The lifting mechanism 1-500 is connected with the bracket mechanism 1-400, so that the bracket mechanism 1-400 can pass through the lifting channel to complete the lifting or descending action under the driving of the lifting mechanism 1-500. Wherein the first article detection device 1-600 corresponds to the first conveying mechanism 1-200. The second article detection device 1-700 corresponds to the joint of the first conveying mechanism 1-200 and the second conveying mechanism 1-300. The third article detection device 1-800 corresponds to the middle or tail position of the second conveying mechanism 1-300.

Illustratively, as shown in fig. 2 to 4, the feeding device 1 may include a first conveying mechanism 1-200, a second conveying mechanism 1-300, a carriage mechanism 1-400, and a lifting mechanism 1-500. Wherein the second conveying mechanism 1-300 is connected with the first conveying mechanism 1-200. And a lifting passage is provided in the second conveyance mechanism 1-300.

In the present exemplary embodiment, the first conveyor 1-200 and the second conveyor 1-300 are arranged one behind the other in the direction of material conveyance on a support. Illustratively, as shown in FIG. 2, the support frame includes a first support 1-110 and a second support 1-120. The first support 1-110 and the second support 1-120 are parallel to each other and spaced apart from each other on the same horizontal plane. The first conveying mechanism and the second conveying mechanism are arranged on the first supporting piece 1-110 and the second supporting piece 1-120 in the front-back direction of the material conveying direction.

As shown in fig. 2, 4 and 7, the first conveying mechanism 1-200 may include a first bracket 1-210, a first rotating shaft 1-220, a second rotating shaft 1-230, a conveying belt 1-240 and a first driving motor 1-250. The first bracket 1-210 is installed at the first support member 1-110 and the second support member 1-120. The first rotating shaft 1-220 and the second rotating shaft 1-230 are respectively provided at both ends of the first bracket 1-210. The conveyor belt is mounted on a first rotating shaft 1-220 and a second rotating shaft 1-230. The first driving motor 1-250 is installed on the first bracket 1-210 and is in transmission connection with the first rotating shaft 1-220. In some embodiments, the first driving motor 1-250 and the first rotating shaft 1-220 can be in transmission connection through a first transmission mechanism 1-260. The first transmission 1 to 260 may be a belt transmission, a chain transmission or a gear transmission. The second conveyor mechanism 1-300 may include a second frame 1-310, a third rotating shaft 1-320, a second driving motor 1-330, and a plurality of conveyor assemblies 1-340. The second bracket 1-310 is mounted on the first support member 1-110 and the second support member 1-120. The third rotating shaft 1-320 is mounted on the second support 1-310. The second driving motor 1-330 is installed on the second bracket 1-310 and is in transmission connection with the third rotating shaft 1-320. In some embodiments, the second driving motor 1-330 and the third rotating shaft 1-320 can be in transmission connection through the second transmission mechanism 1-370. The second gear mechanism 1-370 may be a belt gear mechanism, a chain gear mechanism or a gear mechanism.

As shown in fig. 7, each of the conveyor assemblies 1-340 may include a first driving wheel 1-341, a second driving wheel 1-342, and a first driving belt 1-343. Wherein the first driving wheels 1-341 are provided on the third rotating shafts 1-320. The second transmission wheel 1-342 is rotatably mounted on the second bracket 1-310 through the first arm 1-344. The first drive belt 1-343 is connected to the first drive wheel 1-341 and the second drive wheel 1-342 to form a transport assembly 1-340. A plurality of conveying assemblies 1-340 are arranged on the second bracket 1-310 and the third rotating shaft 1-320 at intervals, so that lifting channels 1-350 are formed between two adjacent conveying assemblies 1-340. Specifically, one end of a first arm 1-344 of each of the transfer units 1-340 is mounted on the second frame 1-310, and the other end thereof extends in the article transfer direction, so that the first arm 1-344 is cantilevered on the second frame 1-310. Further, a baffle plate 1-360 is arranged at the tail part of each conveying assembly 1-340. Specifically, as shown in FIG. 7, a baffle 1-360 is provided at the end of the extended end of each first arm 1-344. By arranging a baffle plate 1-360 at the tail part of each conveying assembly 1-340, the baffle plates 1-360 on the plurality of conveying assemblies 1-340 can form a blocking part at the tail end of the second conveying mechanism 1-300, and articles can be prevented from falling off from the tail end of the second conveying mechanism 1-300.

Wherein, as shown in fig. 2, in the initial state, the carriage mechanism 1-400 is disposed below the second conveyance mechanism 1-300.

Illustratively, as shown in FIG. 8, the tray mechanism 1-400 may include a third rack 1-410 and a plurality of tray units 1-420. A plurality of carrier units 1-420 are mounted on the third support 1-410 at intervals. Specifically, in the present embodiment, the plurality of carrier units 1 to 420 are mounted in parallel and spaced apart from each other on the side of the third support 1 to 410 such that the plurality of carrier units 1 to 420 are cantilevered on the third support 1 to 410. By providing a plurality of parallel and spaced tray units 1-420, the article to be packaged can be more smoothly held. In the installed state, the carriage unit 1-420 is aligned with the hoistway. Specifically, each carriage unit 1-420 corresponds to a lifting/lowering passage 1-350, so that each carriage unit 1-420 can pass through the corresponding lifting/lowering passage 1-350 from bottom to top or from top to bottom. So that the carrier unit 1-420 can pass through the second conveyance mechanism without colliding with the second conveyance mechanism during the lifting and lowering of the carrier unit 1-420, as shown in fig. 5 and 6. In this embodiment, the cradle unit 1-420 includes a second arm 1-421 and a plurality of swinging supports provided on top of the second arm 1-421.

As shown in fig. 8 and 9, the swing supporting member includes a base 1-422, an intermediate rotating member 1-423, and a supporting head 1-424. Wherein the base 1-422 is arranged on top of the second support arm 1-421. The middle rotating member 1-423 is connected to the top of the base 1-422 in a manner of being swingable in a first direction, and a first return spring is further provided on the middle rotating member 1-423. Illustratively, the intermediate rotating member 1-423 is rotatably connected to the top of the base 1-422 in a hinged connection. Specifically, a first hinge seat is formed at the top of the base 1-422, first rotating shafts are respectively arranged at the left side and the right side of the middle rotating member 1-423, and the first rotating shafts are rotatably connected to the first hinge seat, so that the middle rotating member 1-423 is rotatably connected to the top of the base 1-422. The first return spring may be a torsion spring, which is disposed on the first rotating shaft. The support head 1-424 is provided on the intermediate rotating member 1-423 in a manner swingable in the second direction, and a second return spring is further provided on the support head 1-424. Illustratively, the support heads 1 to 424 are rotatably connected to the intermediate rotating member 1 to 423 in a hinged connection, and specifically, second rotating shafts are respectively disposed at front and rear sides of the intermediate rotating member 1 to 423, and second hinge seats are disposed at lower ends of the support heads 1 to 424, and the second rotating shafts are rotatably connected to the second hinge seats, so that the support heads 1 to 424 are rotatably connected to upper ends of the intermediate rotating member 1 to 423. The second return spring may be a torsion spring, which is disposed on the second rotating shaft. The first direction and the second direction may be two directions perpendicular to each other. The top of the bracket unit 1-420 in the bracket mechanism 1-400 is provided with a plurality of swinging supporting pieces which can incline along two directions, and when the top of the bracket unit 1-420 is subjected to external force, the swinging supporting pieces can incline along the forward direction, so that the bottom packaging of the preservative film is completed; after the external force disappears, the swinging supporting piece can automatically reset to receive a new article to be packaged under the action of the reset spring.

The third support 1-410 is connected to the lifting mechanism. As shown in fig. 2, the lifting mechanism 1-500 is connected with the bracket mechanism 1-400, so that the bracket mechanism 1-400 can pass through the lifting channel to complete the lifting or descending action under the driving of the lifting mechanism 1-500.

Illustratively, as shown in FIG. 10, the elevating mechanism 1-500 may include a third driving motor 1-510, a third driving wheel 1-521, a fourth driving wheel 1-522, and a second driving belt 1-523. Wherein the third transmission wheel 1-521 and the fourth transmission wheel 1-522 are vertically arranged. The second belt 1-523 is connected to a third transmission wheel 1-521 and a fourth transmission wheel 1-522. The third driving motor 1-510 is in transmission connection with a third transmission wheel 1-521. In some embodiments, the third driving motor 1-510 and the third transmission wheel 1-521 can be in transmission connection through a third transmission mechanism 1-550. The third transmission 1-550 may be a belt transmission, a chain transmission, or a gear transmission. Further, as shown in fig. 10, the lifting mechanism 1-500 further includes at least one guide assembly. Illustratively, the guide assembly includes a guide rod 1-531 and a guide sleeve 1-532. The guide rods 1-531 are arranged vertically. The guide sleeve 1-532 is slidably disposed on the guide bar 1-531. And, the guide housing 1-532 is connected with the bracket mechanism. In this embodiment, the lifting mechanism 1-500 is provided with two guide assemblies. The lifting direction of the bracket mechanism 1-400 can be further ensured by arranging the guide assembly, so that the deviation of the bracket mechanism is prevented. The carriage means 1-400 is connected to the second conveyor belt 1-523. Specifically, the lifting mechanism 1-500 further comprises a connecting plate 1-542. One side of the connecting plate 1-542 is connected with the guide sleeve 1-532 and the second transmission belt 1-523, and the other side is connected with the third bracket 1-410 in the bracket mechanism 1-400. Furthermore, the lifting mechanism 1-500 is also provided with a limiting mechanism. In some embodiments, the limit mechanism may be a limit switch, such as a proximity switch, electrically connected to the control device. In some embodiments, the spacing mechanism comprises a column 1-541, an upper spacing block 1-543 disposed on the column 1-541, a lower spacing block 1-544 disposed on the column 1-541, and a block 1-545 disposed on the connecting plate 1-542. To define the position of the lifting of the connecting plate 1-542 and thus the carriage mechanism 1-400.

In the present embodiment, the first article detection device 1-600, the second article detection device 1-700, and the third article detection device 1-800 may each employ a correlation photoelectric switch. The first article detecting devices 1 to 600 may be disposed on both sides of the first conveying mechanism, and configured to detect whether an article is placed on the first conveying mechanism. The second article detection device 1-700 is arranged on two sides of the joint of the first conveying mechanism and the second conveying mechanism and used for detecting whether articles arrive at the second conveying mechanism. The third article detection device 1-800 is arranged in the middle or at the tail of the two sides of the second conveying mechanism and used for detecting whether the article reaches the lifting position. In the mounted state, the first article detection device 1-600, the second article detection device 1-700 and the third article detection device 1-800 are respectively connected to the control device of the film wrapping device. And the control device is also electrically connected with the first conveying mechanism 1-200, the second conveying mechanism 1-300 and the lifting mechanism 1-500 respectively. Specifically, the control device is electrically connected with a first driving motor in the first conveying mechanism 1-200, a second driving motor in the second conveying mechanism 1-300 and a third driving motor in the lifting mechanism 1-500 respectively. Wherein, the control device can be a control host of the preservative film packaging machine.

The working process of the feeding device provided by the embodiment of the application is as follows:

after an article 7 to be packaged is input from the outside, the article passes through the first article detection device 1-600, when the first article detection device 1-600 detects that the article to be packaged passes through, a control device (such as a control host of a preservative film packaging machine) controls a first driving motor in the first conveying mechanism 1-200 to start, so that the article to be packaged is conveyed to the joint of the first conveying mechanism and the second conveying mechanism through the conveying belts 1-240;

when the object 7 to be packaged passes through the second object detection device 1-700, the control device controls the second driving motor in the second conveying mechanism 1-300 to be started, so that the object to be packaged is conveyed above the bracket mechanism through the conveying assembly 1-340;

when the article 7 to be packaged passes through the third article detection device 1-800 (or the corresponding distance of the pulse number of the motor is appointed to travel after calculation), the control device controls the second driving motor in the second conveying mechanism 1-300 to stop; meanwhile, the control device controls a third driving motor in the lifting mechanisms 1-500 to be started, so that the bracket mechanism is driven to pass through the second conveying mechanism from bottom to top to lift and convey the to-be-packaged articles to a packaging position.

After the object 7 to be packaged is separated from the support of the bracket mechanism in the packaging process, the lifting mechanism descends to the initial position, and the second conveying mechanism is in a standby state at the moment and can continue the packaging and conveying of subsequent objects. When the second conveying mechanism is not in a standby state, the first conveying mechanism is always in a stop state; after the second conveying mechanism is in a standby state, the first conveying mechanism is started, and the first conveying mechanism stops after the articles are conveyed away from the second article detection device 1-700. The external conveying line is started and stopped synchronously along with the first conveying mechanism.

In the feeding device of the embodiment of the application, the effective conveying position of the second conveying mechanism exceeds the boundary position of the bracket mechanism, so that the conveying mechanism can convey the product to any reasonable position relative to the bracket mechanism. According to different conveying positions, the packaging structure can be combined with different top packaging structures into different packaging modes. Three-jaw out-of-package as when the product is resting in a forward position of the tray mechanism; discharging the three clamping plates after the product stays at the rear position of the bracket mechanism; a four-jaw center packing mode when the product is stopped at the middle position of the bracket mechanism, and the like. In addition, the feeding device of the embodiment of the application has the advantages of small occupied space, high execution speed, simple structure, low cost and convenience in maintenance, and is a feeding device with good applicability, simple structure and low cost.

As shown in FIG. 11, the film feeding mechanism 2 may include a lower carrying plate 2-100, an upper limiting plate 2-200, and a film cutting means. Wherein, the output end of the lower bearing plate 2-100 is provided with a plurality of first gaps 2-110. The output end of the upper limit plate 2-200 is provided with a plurality of second gaps 2-210. The upper limiting plate 2-200 is arranged above the lower bearing plate 2-100 at an interval, so that a film input gap 2-300 is formed between the upper limiting plate 2-200 and the lower bearing plate 2-100, and each second notch 2-210 is aligned with one first notch 2-110. Wherein, the film cutting device comprises a film cutting blade 2-410. The film cutting blade 2-410 is arranged above the front ends of the output ends of the lower bearing plate 2-100 and the upper limiting plate 2-200. In the mounted state, the film cutting blade 2-410 can be driven by an electric drive, a pneumatic drive or a hydraulic drive connected to the control device. In use, the first notch 2-110 and the second notch 2-210 are separated by the packaging film by passing the packaging film through the film feed gap 2-300, either manually or by other external means.

As shown in fig. 12, the film pinching mechanism 3 may include a first holding member support rod 3-100, a second holding member support rod 3-200, a first film holding member 3-300, a second film holding member 3-400, a first holding member driving means 3-500, and a second holding member driving means 3-600. Wherein, the first clamping component supporting rod 3-100 and the second clamping component supporting rod 3-200 are arranged in parallel at intervals. One ends of the first film clamping member 3-300 and the second film clamping member 3-400 are slidably connected to the first clamping member support rod 3-100, respectively, and the other ends of the first film clamping member 3-300 and the second film clamping member 3-400 are slidably connected to the second clamping member support rod 3-200, respectively. The first clamping assembly driving device 3-500 is connected with the first film clamping assembly 3-300 through the first film feeding transmission assembly 3-700. The second clamping component driving device 3-600 is connected with the second film clamping component 3-400 through the second film feeding transmission component 3-800.

Illustratively, the first film holding assembly 3-300 and the second film holding assembly 3-400 are each a pneumatic holding assembly, a hydraulic holding assembly, an electric holding assembly, a magnetic holding assembly, an electrostatic adsorption holding assembly, or a bonded holding assembly.

Wherein, pneumatic centre gripping subassembly can include punch holder, lower plate and pneumatic telescoping device (like pneumatic telescopic link, telescopic cylinder etc.). Parallel arrangement from top to bottom between punch holder and the lower plate, pneumatic telescoping device's flexible end is connected with punch holder or lower plate, and the flexible end of pneumatic telescoping device is flexible to make and press from both sides tightly or loosen between punch holder and the lower plate to the centre gripping packaging film. Furthermore, a plurality of clamping columns are arranged between the upper clamping plate and the lower clamping plate. When the clamping device is used, the clamping column is aligned with the second notches 2-210 and the corresponding first notches 2-110, so that the clamping column can penetrate through the second notches 2-210 and the corresponding first notches 2-110, and when the telescopic end of the pneumatic telescopic device drives the clamping column to be clamped, the packaging film can be clamped conveniently. Furthermore, two ends between the upper clamping plate and the lower clamping plate can be respectively provided with a reset elastic piece (such as a spring), so that after the pneumatic telescopic device is loosened, the upper clamping plate and the lower clamping plate can be loosened quickly. The two ends of the upper clamping plate and the lower clamping plate are respectively connected on the first clamping component supporting rod 3-100 and the second clamping component supporting rod 3-200 in a sliding way through sliding connection structural parts.

The hydraulic clamping assembly, the electric clamping assembly and the pneumatic clamping assembly are similar, and the main difference is that the pneumatic telescopic device is replaced by the hydraulic clamping assembly and the electric clamping assembly respectively.

Wherein, electrostatic absorption formula centre gripping subassembly includes mounting panel and electrostatic absorption piece. The electrostatic adsorption part is arranged on the mounting plate, and two ends of the mounting plate can be respectively connected on the first clamping component supporting rod 3-100 and the second clamping component supporting rod 3-200 in a sliding way through the sliding connection structural part. When the packaging film packaging device is used, the electrostatic adsorption piece is aligned with the second notches 2-210 and the corresponding first notches 2-110, and the packaging film between the second notches 2-210 and the corresponding first notches 2-110 is adsorbed on the electrostatic adsorption piece through electrostatic adsorption.

The structure of the adhesive clamping assembly is similar to that of the electrostatic adsorption clamping assembly, and the main difference is that the electrostatic adsorption piece is replaced by the adhesive bonding piece.

As shown in fig. 13 to 17, the magnetic clamping assembly may include a first mounting seat 3-3100, a first guide shaft 3-3210, a second guide shaft 3-3220, a second mounting seat 3-3300, a return elastic member 3-3400, and a plurality of clamping assemblies 3-3500.

The first mount 3-3100 may be in the form of an elongated structure. In one particular embodiment, as shown in fig. 13-16, the first mounting block 3-3100 may be a strip. The first guide shaft 3-3210 and the second guide shaft 3-3220 are vertically disposed on the first mount 100. Illustratively, as shown in fig. 14 and 16, the first guide shaft 3-3210 and the second guide shaft 3-3220 may be pins respectively disposed at lower portions of left and right ends of the first mounting seat 3-3100, such that the first guide shaft 210 and the second guide shaft 3-3220 are vertically disposed on the first mounting seat 3-3100 in a downwardly protruding manner. In a specific embodiment, the first guide shaft 3-3210 and the second guide shaft 3-3220 may be directly inserted into a pin hole of the first mounting seat 3-3100, and fixed by interference fit of the pin and the pin hole. In another specific embodiment, the first guide shaft 3-3210 and the second guide shaft 3-3220 may also be inserted into pin holes of the first mounting seat 3-3100 and fixed by screws or bolts. The second mounting seat 3-3300 may be in a strip structure. In one particular embodiment, as shown in fig. 13-16, second mount 3-3300 may be a rectangular tube.

One end of the second mounting seat 3-3300 is slidably connected to the first guide shaft 3-3210, and the other end of the second mounting seat 3-3300 is slidably connected to the second guide shaft 3-3220. In a specific embodiment, two ends of the second mounting seat 3-3300 are respectively provided with a through hole, and the first guide shaft 3-3210 and the second guide shaft 3-3220 are respectively connected to the through holes at two ends of the second mounting seat 3-3300 in a penetrating manner, so that the second mounting seat 3-3300 can slide up and down on the first guide shaft 3-3210 and the second guide shaft 3-3220 to be close to or far away from the first mounting seat 3-3100, and the electromagnet 3-3510 and the magnetic material piece 3-3520 can be attracted or separated. Furthermore, the lower ends of the first guide shaft 3-3210 and the second guide shaft 3-3220 may be respectively connected with a limit bolt. The limiting bolt can be inserted on the first guide shaft 3-3210 and the second guide shaft 3-3220 along the radial direction. The limiting bolt can also be connected to the first guide shaft 3-3210 and the second guide shaft 3-3220 along the axial direction, and the head of the limiting bolt is larger than the diameter of the guide shaft, so that a bulge is formed at the bottom of the guide shaft along the radial direction. So that the second mounting seat 3-3300 can only slide between the first mounting seat 3-3100 and the limit bolt, and also the second mounting seat 3-3300 can be prevented from falling off the first guide shaft 3-3210 and the second guide shaft 3-3220.

The return elastic member 3-3400 is disposed between the first mount 3-3100 and the second mount 3-3300. Illustratively, the return elastic member 3-3400 may be a return spring or a return elastic sheet. In one embodiment, as shown in FIGS. 14 and 16, the return spring 3-3400 is formed of two springs. Wherein, one spring is sleeved on the first guide shaft 3-3210, the upper end of the spring is connected on the first mounting seat 3-3100, and the lower end of the spring is connected on the second mounting seat 3-3300; the other spring is sleeved on the second guide shaft 3-3220, the upper end of the other spring is connected to the first mounting seat 3-3100, and the lower end of the other spring is connected to the second mounting seat 3-3300. When the second installation base 3-3300 moves upward or downward from the initial position, the two springs are compressed or extended, thereby forming a restoring force for the second installation base 3-3300, so that the second installation base 3-3300 can be restored to the initial position after the external force is released. In addition, the two springs can also prevent the second mounting seat 3-3300 from falling.

Each clamping assembly may include an electromagnet 3-3510 and a piece of magnetic material 3-3520. The electromagnet 3-3510 and the magnetic material piece 3-3520 are detachably arranged between the first mounting seat 3-3100 and the second mounting seat 3-3300. For example, as shown in fig. 14 and 16, the electromagnet 3-3510 in the clamping assembly may be arranged on the second mounting seat 3-3300. The piece of magnetic material 3-3520 in the clamping assembly may be positioned on the first mounting block 3-3100 at a location corresponding to the electromagnet 3-3510. Specifically, as shown in fig. 17, a magnetic material member mounting structure including a mounting stepped hole 3-3110 and a receiving groove 3-3120 is provided on the first mounting seat 3-3100. The mounting stepped hole 3-3110 is provided at an upper portion of the first mounting seat 3-3100. The receiving groove 3-3120 is provided at a lower portion of the first mounting seat 3-3100 and communicates with the mounting stepped hole 3-3110 such that the first mounting seat 3-3100 is perforated up and down. The magnetic material member 3-3520 includes a clamp block 3-3521 and a mounting protrusion 3-3522 formed on the clamp block 3-3521. In the coupled state, the clamping blocks 3-3521 are seated in the receiving grooves 3-3120, and the mounting protrusions 3-3522 are coupled in the mounting stepped holes 3-3110 by coupling bolts (not shown). And a gap is arranged between the magnetic material piece 3-3520 and the magnetic material piece mounting structure, so that the magnetic material piece 3-3520 is connected in the magnetic material piece mounting structure in a vertically floating manner. The electromagnet 3-3510 can be fixed on the second mounting seat 3-3300 through a bolt or a connecting pin. In the installation state, the electromagnets 3-3510 are connected with the control system and the power supply of the packaging machine. When in use, the film (such as a preservative film) is positioned between the electromagnet 3-3510 and the magnetic material piece 3-3520, and the film is clamped between the electromagnet 3-3510 and the magnetic material piece 3-3520 through the attraction of the electromagnet 3-3510 and the magnetic material piece 3-3520 in the clamping component. In one particular embodiment, a plurality of gripper assemblies 3-3500 are disposed between the first guide shaft 3-3210 and the second guide shaft 3-3220.

Illustratively, the pieces of magnetic material 3-3520 may be pieces of ferromagnetic material. Such as iron, cobalt, nickel, gadolinium, and the like. In a particular embodiment, the pieces of magnetic material 3-3520 are iron pieces or blocks.

In some embodiments, the electromagnets 3-3510 and the pieces of magnetic material 3-3520 may be replaced by a first gripping head and a second gripping head. Wherein the first and/or second gripper heads may be electrostatic chucks. During the use, under the effect like push-pull type electro-magnet, be close to each other between first centre gripping head and/or the second centre gripping head, adsorb the film on first centre gripping head and/or second centre gripping head under electrostatic action, finally first centre gripping head and second centre gripping head are in the same place to grasp the film. After the one-time use is finished, the first clamping head and the second clamping head can eliminate static electricity or can be separated under the action of external force (such as a push-pull type electromagnet) between the first clamping head and the second clamping head, and then the next use is carried out.

In other embodiments, the electromagnets 3-3510 and the pieces of magnetic material 3-3520 may be replaced by a first gripping head and a second gripping head. And an adhesive layer is arranged at the end part of the clamping end of the first clamping head and/or the second clamping head. When the film clamping device is used, under the action of the push-pull type electromagnet, the first clamping head and the second clamping head are close to each other, the film is adhered to the first clamping head and/or the second clamping head, and finally the film is separably connected under the action of the adhesive layer to clamp the film. After the one-time use, the first clamping head and the second clamping head can be separated under the action of external force (such as a push-pull electromagnet), and then the next use is carried out.

The magnetic clamping assembly has the advantages of no need of an air source, high execution speed, simple structure, low cost, convenience in maintenance and the like.

In addition, the conventional method requires a pneumatic/hydraulic/electric cylinder to maintain a clamping force to clamp the film, and the pneumatic/hydraulic/electric cylinder mechanism must follow the movement to release the film in the subsequent movement of the film clamping mechanism. The clamping assembly adopted by the embodiment of the application can release the film at the appointed node without following the movement of the power mechanism (such as a clamping driving device) because the film is clamped by the magnetic force or the adhesive force, so that the structure of the film clamping mechanism is more simplified, the weight is greatly reduced, the power loss of the film clamping mechanism during the movement is reduced, and the control precision of the film clamping mechanism is improved.

In the initial state, each clamping assembly is aligned with the second notch 2-210 and the corresponding first notch 2-110, so that each clamping assembly can clamp the packaging film through the second notch 2-210 and the corresponding first notch 2-110.

Further, as shown in fig. 18, a clamp driving device 3-390 may be further provided below the initial position (the second notch 2-210 and the corresponding first notch 2-110). In one particular embodiment, there are two clamp actuators 90. Illustratively, in this embodiment, the clamp driving device 3-390 may employ a push-pull type electromagnet. The push-pull electromagnet pushes the electromagnet group of the clamping mechanism upwards until the electromagnet group is attracted with the magnetic material piece, and the power is cut off and automatically reset through a spring in the push-pull electromagnet. The push-pull type electromagnet serving as the clamping driving device can adopt the same power source as the electromagnet and the magnetic material piece in the clamping assembly, so that the clamping assembly has the advantages of no need of an air source, high execution speed, simple structure, low cost, convenience in maintenance and the like.

Illustratively, in other embodiments, the clamp driving device 90 includes a telescoping device 91 and a push plate 92 disposed at the telescoping end of the telescoping device 91. The telescopic device 91 may be a telescopic cylinder, a hydraulic telescopic cylinder, or an electric telescopic cylinder.

In the installation state, two ends of the first installation seat 3-3100 are slidably connected to the first clamping assembly support rod 3-100 and the second clamping assembly support rod 3-200 through the sliding connection structural member, respectively. The electromagnets 3 to 3510, the clamp driving device 90 and the like are electrically connected to a control device of the film wrapping apparatus.

Illustratively, the first and second clamp assembly driving devices 3-500 and 3-600 may each employ a driving motor. The first film feeding transmission assembly 3-700 and the second film feeding transmission assembly 3-800 can both adopt belt transmission assemblies. The first holding-member driving means 3-500 and the second holding-member driving means 3-600 are connected to the control means of the film wrapping apparatus.

Specifically, as shown in fig. 18, the first film feeding driving assembly 3-700 includes a first driving lever 3-710. First main pulleys 3-720 are respectively arranged at two ends of the first transmission rod 3-710. First driven pulleys 3-730 corresponding to the first main pulleys 3-720, respectively, are provided on the frame. The first main belt pulley 3-720 and the first driven belt pulley 3-730 at the corresponding positions are connected through a first transmission belt 3-740 respectively. The two ends of the first clamping component are respectively connected with the two first transmission belts 3-740 through sliding connection structural members 3-750. And the output shaft of the first clamping assembly driving device 3-500 is also connected with the connecting belt wheel 3-760 on the first transmission rod 3-710 through a short belt, so that the first clamping assembly driving device 3-500 can drive the first clamping assembly to move back and forth. Similar to the first film feeding driving assembly 3-700, the second film feeding driving assembly 3-800 includes a second driving lever 3-810. And second main pulleys 3-820 are respectively arranged at two ends of the second transmission rod 3-810. Second driven pulleys 3-830 corresponding to the second main pulleys 3-820, respectively, are provided on the frame. The second main belt pulley 3-820 and the second driven belt pulley 3-830 at the corresponding positions are connected through a second transmission belt 3-840 respectively. Two ends of the second clamping component are respectively connected to the two second transmission belts 3-840 through sliding connection structural members 3-750. And the output shaft of the second clamping assembly driving device 3-600 is also connected with the connecting belt wheel 3-860 on the second transmission rod 3-810 through a short belt, so that the second clamping assembly driving device 3-500 can drive the second clamping assembly to move back and forth.

As shown in fig. 19, the film folding mechanism 4 may include a first push plate 4-100, a second push plate 4-200, a third push plate 4-300, a push plate support assembly 4-400, a push plate support rod 4-500, a first push plate driving device 4-600, and a second push plate driving device 4-700. In this embodiment, the first push plate driving device 4-600 and the second push plate driving device 4-700 are both driving motors. The first push plate driving device 4-600 and the second push plate driving device 4-700 are connected with the control device of the film packaging device.

Wherein one ends of the first push plate 4-100 and the second push plate 4-200 are slidably coupled to the push plate support rods 4-500, and the other ends of the first push plate 4-100 and the second push plate 4-200 are slidably coupled to the push plate support assemblies 4-400. The first push plate driving device 4-600 is connected with the first push plate 4-100 and the second push plate 4-200 through the first push plate transmission assembly 4-800, respectively, so that the first push plate driving device 4-600 can drive the first push plate 4-100 and the second push plate 4-200 to simultaneously move in reverse directions through the first push plate transmission assembly 4-800.

Specifically, as shown in FIG. 19, one ends of the first push plate 4-100 and the second push plate 4-200 are slidably coupled to the push plate support rods 4-500 through sliding sleeves, respectively. The push plate supporting component 4-400 comprises a mounting plate, a first cross rod and a second cross rod; the first cross rod and the second cross rod are arranged on the side face of the mounting plate in a vertically parallel and spaced mode, so that a sliding groove is formed between the first cross rod and the second cross rod. The other ends of the first and second push plates 4-100 and 4-200 are slidably coupled in the slide grooves. The first push plate drive assembly 4-800 may include a driving pulley 4-810 connected to an output shaft of the first push plate driving device 4-600, a driven pulley 4-820 corresponding to the driving pulley 4-810, and a belt 4-830 connected to the driving pulley 4-810 and the driven pulley 4-820. The first push plate 4-100 is coupled to one side of the belt 4-830 and the second push plate 4-200 is coupled to the other side of the belt 4-830 such that the first push plate 4-100 and the second push plate 4-200 are simultaneously moved in opposite directions when the belt 4-830 is rotated.

The third push plate 4-300 is disposed in parallel above the first push plate 4-100 and the second push plate 4-200. And, the second push plate driving device 4-700 is connected to the third push plate 4-300 through the second push plate transmission assembly 4-900, so that the second push plate driving device 4-00 can drive the third push plate 4-300 to move in a direction perpendicular to the moving direction of the first push plate 4-100 and the second push plate 4-200 through the second push plate transmission assembly 4-900.

Specifically, the second push plate transmission assembly 4-900 may include a rotating rod 4-910, a first pulley set 4-920, a second pulley set 4-930, and two transmission belts 4-940. The first pulley set 4-920 and the second pulley set 4-930 are respectively connected with two ends of the rotating rod 4-910, the two transmission belts 4-940 are respectively connected with the first pulley set 4-920 and the second pulley set 4-930, and two ends of the third push plate 4-300 are respectively connected with the two transmission belts 4-940. The second push plate driving device 4-700 is also connected to the rotating rod 4-910 through a belt driving assembly, so that the second push plate driving device 4-700 can drive the rotating rod 4-910 to rotate, and further drive the second push plate driving assembly to move in parallel in a direction perpendicular to the moving direction of the first push plate 4-100 and the second push plate 4-200 through a pulley set and a belt.

As shown in fig. 20, the pushing mechanism 5 may include pushing members 5 to 100, pushing transmission assemblies 5 to 200, and pushing member driving devices 5 to 300.

Wherein, the pushing piece 5-100 is connected with the pushing transmission component 5-200. The pushing transmission assembly 5-200 is in transmission connection with a pushing element driving device 5-300. Wherein, the pushing piece driving device 5-300 is connected with the control device of the film packaging device.

Specifically, the pushing member 5-100 comprises a connecting plate 5-110 and two U-shaped members. Two U-shaped pieces are respectively arranged on the upper sides of the material pushing pieces 5-100, and the U-shaped bottoms of the two U-shaped pieces face the packaged objects. The pushing transmission assembly 5-200 comprises a pushing transmission rod 5-210, a first pushing transmission belt assembly 5-220 connected with the pushing transmission rod 5-210 and a second pushing transmission belt assembly 5-230 connected with the pushing transmission rod 5-210. Two ends of the connecting plate 5-110 are respectively connected with belts in the first material pushing transmission belt component 5-220 and the second material pushing transmission belt component 5-230. The pushing member driving device 5-300 is also connected with the pushing transmission rod 5-210 through a belt transmission component, so that the pushing member driving device 5-300 can drive the pushing transmission rod 5-210 to rotate, and further drive the pushing member 5-100 to move.

As shown in fig. 21, the output mechanism 6 includes heated rollers 6-100. The heating rollers 6-100 are connected with the film folding mechanism 4. Preferably, the heating rollers 6 to 100 may be provided in plural in parallel. Wherein the heating rollers 6-100 are connected with a control device of the film packaging device. The bottom packaging film is heat sealed by arranging heating rollers 6-100 as the desired packaged product passes. The friction resistance of the packaged objects passing by can be reduced by arranging a plurality of rows of unpowered rollers.

Further, the output mechanism 6 also comprises a conveying output device 6-200. The delivery output device 6-200 is connected with the heating roller 6-100. In particular, the transfer output device 6-200 may include a frame and a plurality of rollers disposed on the frame. The delivery of the packaged products is facilitated by the provision of the delivery and delivery devices 6-200.

In some embodiments, the film wrapping apparatus further comprises a control apparatus. The feeding device 1, the film input mechanism 2, the film clamping and conveying mechanism 3, the film folding mechanism 4, the material pushing mechanism 5 and the output mechanism 6 are respectively connected with the control device. Specifically, all the electric devices in the feeding device 1, the film input mechanism 2, the film clamping and conveying mechanism 3, the film folding mechanism 4, the material pushing mechanism 5 and the output mechanism 6 can be connected with a control device, and the control device controls the electric devices.

The film packaging device of the embodiment of the application has the advantages of compact structure, low cost, adjustable packaging size, high packaging speed, high editing degree of actions and flows, and capability of realizing automatic production by butting the assembly lines front and back. Therefore, the film packaging device is a high-efficiency packaging device which can meet the requirements of multiple package sizes, multiple package types, high packaging speed, assembly line type packaging and the like.

Another aspect of an embodiment of the present invention provides a film wrapping method.

The film packaging method comprises the following steps:

a film conveying step: conveying the film for packaging to a packaging position through a film clamping and conveying mechanism;

feeding: conveying an article to be packaged to the lower part of a film for packaging through a feeding device, covering the upper part of the article to be packaged with the film for packaging, and driving the article to be packaged and the film for packaging to ascend simultaneously;

film packaging: the side part of the film for packaging is folded to the bottom of the article to be packaged through a film folding mechanism, and the folded film for packaging and the article to be packaged are pushed to the output mechanism through a material pushing mechanism;

an output step: heating and sealing the packaging film at the bottom of the article to be packaged through the output mechanism to complete packaging; and outputting the packaged articles.

Specifically, the method comprises the following steps:

products to be packaged enter from an external conveying device or are manually put into the feeding device, are sequenced by a first conveying mechanism and a second conveying mechanism in the feeding device 1, and are conveyed to the designated position of a bracket mechanism in the feeding device;

meanwhile, two groups of film clamping components of the film clamping and conveying mechanism 3 sequentially clamp the film in the film input mechanism 2, and after the film is driven to be pulled out by a required length, a film cutting device in the film input mechanism cuts off the film;

the two groups of film clamping components of the film clamping and conveying mechanism 3 integrally move, and after the film is conveyed to the central position of the package, the two groups of film clamping components move towards two ends by a specified distance so as to enable the film to obtain the required tension degree;

the bracket lifting device in the feeding device 1 drives the bracket mechanism to lift, and the bracket mechanism is contacted with a product to be packaged and drives the product to enter a packaging center position, as shown in fig. 22; in the entering process, the plastic wrap contacts with the stretched preservative film or stretched film and other wrapping materials and rises synchronously;

after the packaging position is reached, the first push plate and the second push plate in the film folding mechanism 4 synchronously and quickly move from two ends to the center (the moving distance can be according to the data of the size of the packaged object which is input or identified and calculated by a specific function relation), contact with the preservative films on the left side and the right side and synchronously move in the moving process, impact the top end of the bracket mechanism, automatically keep away the space at the top end of the bracket mechanism, and the first push plate and the second push plate drive the preservative films to reach the bottom of the packaged product;

after the first push plate and the second push plate are moved, the third push plate starts to move backwards quickly from the front end until the bottom of the packaged object is close to the front position, and the moving distance of the third push plate can be set within a certain range so as to achieve the optimal packaging effect; in the process, the two groups of film clamping assemblies sequentially release the clamping plates to enable the third pushing plate to push the packaging film in place, and the releasing time of the clamping plates can be determined according to the tension degree required by the product to be packaged;

after the third push plate finishes moving, the pushing mechanism 5 starts to move backward from the front end at a medium speed and a constant speed to contact the packaged product and synchronously move to eject the packaged product;

when the packaged product is pushed out, the heating roller maintains a set constant temperature through the top surface of the heating roller of the output mechanism 6, and when the packaged product and the packaging film pass through the surface of the heating roller, the heating roller heats and seals the packaging film at the bottom of the packaged object;

after leaving the heating roller, the packaged objects enter the conveying output device and are conveyed to the next station, and the whole packaging process is completed, as shown in fig. 23.

By adopting the film packaging method provided by the embodiment of the invention, automatic production can be carried out by a front-back butt-joint assembly line, and assembly line type high-efficiency packaging can be realized.

It should be noted that all of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.

In addition, the above-described embodiments are exemplary, and those skilled in the art, having benefit of this disclosure, will appreciate numerous solutions that are within the scope of the disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.