阅读说明：本技术 一种用于捆扎带打包机的融合装置 (Fusion device for strapping machine ) 是由 严远忠 彭向 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种用于捆扎带打包机的融合装置,包括：捆扎带熔接机构,被配置成在捆扎带环的重叠位置形成摩擦焊接连接,其包括熔接架、定位在熔接架上的熔接上齿、连接于机座上的熔接下齿,熔接架上的熔接上齿由第一驱动机构驱动相对熔接下齿进行来回振动焊接；熔接状态转换机构,由第二驱动机构所驱动,包括由第二驱动机构驱动的偏心轮、由偏心轮外周面旋转驱动的摆动支架、设置于摆动支架的压柱、压柱底部的摆动轨迹经过熔接架的顶面,摆动支架在偏心轮的转动驱动下上下摆动,通过压柱使熔接架压至焊接位置或返回休止位置。将捆扎带熔接机构和熔接状态转换机构分别进行独立驱动,降低了融合装置的维修难度和成本,还提高了控制精度。(The invention discloses a fusion device for a strapping machine, which comprises: the strapping tape welding mechanism is configured to form friction welding connection at the overlapping position of the strapping tape rings and comprises a welding frame, a welding upper tooth positioned on the welding frame and a welding lower tooth connected to the base, wherein the welding upper tooth on the welding frame is driven by the first driving mechanism to perform reciprocating vibration welding relative to the welding lower tooth; and the welding state switching mechanism is driven by the second driving mechanism and comprises an eccentric wheel driven by the second driving mechanism, a swinging support rotationally driven by the peripheral surface of the eccentric wheel, a pressure column arranged on the swinging support, and a swinging track of the bottom of the pressure column passes through the top surface of the welding frame, the swinging support swings up and down under the rotation drive of the eccentric wheel, and the welding frame is pressed to a welding position or returns to a rest position through the pressure column. The strapping tape welding mechanism and the welding state switching mechanism are independently driven respectively, so that the maintenance difficulty and cost of the fusion device are reduced, and the control precision is also improved.)

1. A fusion device for a strapping machine, comprising:

a binding band welding mechanism (3) configured to form a friction welding connection at an overlapping position of the binding band loops; it comprises a welding frame (32), a welding upper tooth (34) positioned on the welding frame, and a welding lower tooth (35) connected on the machine base; the welding upper teeth (34) on the welding frame (32) are driven by a first driving mechanism (71) to perform reciprocating vibration welding relative to the welding lower teeth (35);

a welding state switching mechanism (8) which is configured to switch the strapping welding mechanism (3) between a welding position and a rest position and is driven by a second driving mechanism (72);

the welding state switching mechanism (8) comprises an eccentric wheel (81) driven by a second driving mechanism (72), a swinging support (82) with one side pivoted with the base and rotationally driven by the peripheral surface of the eccentric wheel (81), a pressing column (83) arranged on the swinging support (82), and a swinging track of the bottom of the pressing column (83) passes through the top surface of the welding frame (32), the swinging support (82) swings up and down under the rotation drive of the eccentric wheel (81), and the welding frame (32) is pressed to a welding position or returns to a resting position through the pressing column (83).

2. The fusing device for a strapping machine as claimed in claim 1, wherein a second elastic member (37) is vertically provided downward at the bottom of the welding frame (32), and a deforming restoring force of the second elastic member (37) automatically restores the welding frame (32) upward to a rest position, so that the welding upper tooth (34) is kept away from the welding lower tooth (35) in a non-operating state.

3. The fusing apparatus for a strapping machine as claimed in claim 2, wherein the swing bracket (82) is fixedly provided with at least one lower roller (842) facing the inside of the output shaft of the drive motor below the eccentric (81), and is driven to swing down the pinch-welding frame (32) by interference fit of the outer peripheral surface of the eccentric (81) with the lower roller.

4. The fusing device for a strap baler of claim 2, wherein the inner side of the swing bracket (82) facing the output shaft of the drive motor is provided with an upper roller (841) and a lower roller (842) respectively below and above the eccentric (81) for interference fit with the eccentric (81);

the outer peripheral surface of the eccentric wheel (81) is in interference fit with the lower roller (842), so that the swinging bracket is driven to swing downwards to extrude the welding frame (32); the swinging bracket is driven to swing upwards through the interference fit of the eccentric wheel (81) and the upper roller (841).

5. The fusion apparatus for a strap baler according to claim 3 or 4, characterised in that the compression leg (83) is movably connected to the swing bracket (82) by means of a compression leg damping structure (86); on the upper and lower both ends of compression leg (83) run through last positioning seat (871) of swing bracket (82) and the through-hole of lower positioning seat (872) respectively, the compression leg is located the outer upper end spiro union nut of last positioning seat (871), the compression leg lower part extends to outside the lower positioning seat, the cross section of compression leg lower part is less than the through-hole cross section of lower positioning seat (872), suit spring (861) on compression leg (83), the protruding of positioning seat (871) and compression leg (83) bottom lateral wall is contradicted respectively at spring (861) both ends.

6. The fusion device for a strapping machine as in claim 5 wherein the bottom of the compression leg extends outwardly to form a hemispherical-like compression head (831) with the spherical surface facing downward and the lower end of the spring (861) abutting the top surface of the compression head.

7. The fusion apparatus for strapping machines as in claim 1, characterized in that the eccentric (81) is arranged on the output shaft (72a) of the second drive mechanism (72) or on another rotary shaft which is parallel to the output shaft (72a) and is in driving connection therewith.

8. The fusion device for strapping machines as in any of claims 1 to 4 or 7, characterized in that the strap welding means (3) comprise an eccentric shaft (31) on the base (1) in driving connection with the first drive means (71), a welding frame (32) pivoted on the eccentric shaft, a welding arm (33) in the interior of the welding frame (32) and having its end pivoted on the eccentric shaft (31), an upper welding tooth (34) hinged at the front end of the welding arm (33), a lower welding tooth (35) below the upper welding tooth (34) and connected to the base; the welding upper teeth (34) are embedded into the positioning grooves (321) of the welding frame (32) and exposed out of the tooth-shaped bottom, and the top surface and the left and right side surfaces of the welding upper teeth (34) are in sliding connection with the inner walls of the positioning grooves (321); the eccentric shaft (31) drives the welding frame (32) and the welding upper teeth (34) to perform reciprocating oscillation motion.

9. The fusion apparatus for strap presses of claim 8, wherein the output shaft of the first drive mechanism (71) is connected to the eccentric shaft (31) of the strap welding mechanism (3) by a synchronous belt drive.

10. The fusing device for strapping machines as in claim 8 or 9, characterized in that the upper teeth (34) are provided with a runner (342) on the left and right side walls and the top wall of the positioning slot (321) and/or on the corresponding inner wall of the positioning slot (321) of the welding carriage, a plurality of balls (343) are mounted in the runner (342), and the balls (343) do not fill the runner (342) and have a certain degree of freedom to roll.

11. The fusion device for strap packers of claim 1 further provided with two travel switches, a first travel switch (101) and a second travel switch (102) being provided on either side of the swing path of the swing bracket (82) for detecting whether the strap welding mechanism (8) is in the rest or welding position.

Technical Field

The invention relates to the technical field of strapping tape packaging machines, in particular to a fusion device for a strapping tape packaging machine.

Background

With the rapid development of science and technology, various types of bundling equipment which are applied to various fields and meet different requirements appear in the market. The common strapping method is to pack an article to be packaged by using a plastic strapping tape, and at present, strapping tape packers appearing on the market generally tighten a strapping tape ring around the article to be packaged by using a friction welding fusion mode to permanently connect the overlapped initial parts of the strapping tapes so as to complete the packing. Because portable hand baling press convenient to use, it is convenient to remove, portable baling press application is more and more extensive.

However, the fusion device of the prior hand-held packer has single type and high integration level, the fusion operation of the strapping tape and the up-and-down swing of the upper teeth of the fusion (namely the switching operation of the welding position) are in transmission connection, although the automation degree is high, the arrangement has the defects of high manufacturing and maintenance difficulty, high maintenance cost and high failure rate, and the lifting distance of the upper teeth of the fusion is difficult to control.

Therefore, the prior art has yet to be developed.

Disclosure of Invention

In view of the above technical problems, an embodiment of the present invention provides a novel fusion device for a strapping machine, which has a simple structure, and separately drives the welding operation of the strapping tape and the vertical swing operation of the welding upper teeth, thereby reducing the difficulty in manufacturing and maintaining the fusion device, and improving the control accuracy of the lifting displacement distance of the welding upper teeth on the welding frame.

The invention provides the following technical scheme:

a fusion device for a strapping machine, comprising:

a strap welding mechanism configured to form a friction welding connection at an overlapping position of the strap loops; comprises a welding frame, a welding upper tooth positioned on the welding frame and a welding lower tooth connected on a machine base; the welding upper teeth on the welding frame are driven by the first driving mechanism to perform reciprocating vibration welding relative to the welding lower teeth;

a welding state switching mechanism configured to switch the strap welding mechanism between a welding position and a rest position, and driven by the second driving mechanism;

the welding state switching mechanism comprises an eccentric wheel driven by the second driving mechanism, a swinging support, a pressing column and a swinging track, wherein one side of the swinging support is pivoted with the base and is driven by the peripheral surface of the eccentric wheel to rotate, the pressing column is arranged on the swinging support, the swinging track at the bottom of the pressing column passes through the top surface of the welding frame, the swinging support swings up and down under the driving of the rotation of the eccentric wheel, and the welding frame is pressed to a welding position or returns to a rest position through the pressing column.

In the fusion device, the bottom of the fusion frame is vertically provided with a second elastic component downwards, and the deformation restoring force of the second elastic component enables the fusion frame to automatically restore to a rest position upwards, so that the upper teeth of the fusion frame are kept away from the lower teeth of the fusion frame in a non-working state.

In the fusion device, at least one lower roller is fixedly arranged on the inner side surface of the swing bracket facing the output shaft relative to the lower part of the eccentric wheel, and the swing bracket is driven to swing downwards to extrude the fusion welding frame through the interference fit of the outer peripheral surface of the eccentric wheel and the lower roller.

In the fusion device, an upper roller and a lower roller which are used for being in interference fit with the eccentric wheel are respectively arranged below and above the eccentric wheel on the inner side surface of the swinging bracket facing the output shaft;

the outer peripheral surface of the eccentric wheel is in interference fit with the lower roller wheel to drive the swinging bracket to swing downwards to extrude the welding frame; the swinging bracket is driven to swing upwards through the interference fit of the eccentric wheel and the upper roller.

In the fusion device, a compression leg is movably connected to a swing bracket through a compression leg buffer structure; the upper and lower both ends of compression leg run through respectively on the last positioning seat of swing bracket and the through-hole of lower positioning seat, and the upper end spiro union nut that the compression leg is located outside the last positioning seat, and outside the compression leg lower part extended to lower positioning seat, the cross section of compression leg lower part was less than the through-hole cross section of lower positioning seat, and a suit spring on the compression leg, the spring both ends were contradicted respectively and are gone up the protruding of positioning seat and compression leg bottom lateral wall.

The fusion device in, the pressure head that forms similar hemisphere face is outwards extended to the compression leg bottom, the sphere sets up downwards, the lower extreme of spring is contradicted the top surface of pressure head.

In the fusion device, the eccentric wheel is arranged on the output shaft of the second driving mechanism or other rotating shafts which are parallel to the output shaft and are in transmission connection with the output shaft.

In the fusion device, the strapping tape fusion mechanism comprises an eccentric shaft, a fusion frame, a fusion arm, fusion upper teeth and fusion lower teeth, wherein the eccentric shaft is positioned on the base and is in transmission connection with the first driving mechanism; the welding upper teeth are embedded into the positioning grooves of the welding frame and expose out of the tooth-shaped bottom, and the top surfaces and the left and right side surfaces of the welding upper teeth are in sliding connection with the inner walls of the positioning grooves; the eccentric shaft simultaneously drives the welding frame and the welding upper teeth to perform back and forth oscillation motion.

In the fusion device, an output shaft of the first driving mechanism is connected with an eccentric shaft of the strapping tape welding mechanism through the synchronous belt transmission mechanism.

In the fusion device, the fusion upper teeth are arranged on the left side wall, the right side wall and the top wall in the positioning groove and/or the corresponding inner wall of the positioning groove of the fusion frame, a plurality of balls are arranged in the sliding groove, and the sliding groove is not filled with the balls and has a certain rolling degree of freedom.

The fusion device further comprises two travel switches, wherein the first travel switch and the second travel switch are respectively arranged on two sides of a swing path of the swing support and used for detecting whether the strapping tape fusion mechanism is in a rest position or a welding position.

The fusion device for the strapping machine provided by the embodiment of the invention has the following beneficial effects:

1. carry out independent drive respectively with strapping butt fusion mechanism and butt fusion state shifter, not only improved the work independence of two kinds of mechanisms, reduced the manufacturing and the maintenance degree of difficulty of two kinds of mechanisms, still improved the control accuracy to the lift displacement distance of butt fusion upper tooth on the butt fusion frame.

2. Through setting up compression leg buffer gear on the butt fusion state shifter, cushioned the impact force of swing in-process compression leg lower extreme to the butt fusion frame, avoided part wearing and tearing and vibration because of excessive striking leads to between the part.

3. The tooth sets up the spout on being located the corresponding inner wall of the lateral wall and the constant head tank of roof and/or butt fusion frame about the butt fusion frame constant head tank, and the installation has the many balls of certain degree of freedom in the spout. Above-mentioned setting up can greatly reduce the frictional force between tooth outer wall and the butt fusion frame constant head tank inner wall on the butt fusion in-process, not only guarantee the butt fusion in the tooth sliding position the degree of accuracy and motion stationarity, still reduced the wearing and tearing of these two kinds of parts, the life of extension spare part.

Drawings

FIG. 1 is a schematic front view of a portable baler with a take-up pulley raised in one embodiment; the outer shell and part of the shielding structure are omitted in the figure;

FIG. 2 is a schematic front view of the baler with the take-up wheels lowered in one embodiment; the outer shell and part of the shielding structure are omitted in the figure;

FIG. 3 is an exploded view of the strap tensioning mechanism of the portable strapping machine;

FIG. 4 is an exploded view of the strap tensioning mechanism of the portable strapping machine from another perspective;

FIG. 5 is a schematic perspective view of the portable baler;

FIG. 6 is a schematic view of the first state of the lifting mechanism for the take-up wheel in the portable baler;

FIG. 7 is a schematic structural view of a second state of the lifting mechanism of the take-up pulley in the portable baler;

FIG. 8 is a schematic view of the strap welding mechanism and drive mechanism of the portable strapping machine;

FIG. 9 is another schematic view of the strap welding mechanism and drive mechanism of the strapping machine; the fusion cage of fig. 8 is omitted;

FIG. 10 is a further schematic view of the strap welding mechanism and drive mechanism of the strapping machine;

FIG. 11 is a rear view of the welding state switching mechanism according to an embodiment;

fig. 12 is a perspective view of the welding state switching mechanism of fig. 11;

fig. 13 is a perspective view of the welding state switching mechanism of fig. 11 from another angle;

FIG. 14 is a front view of a first state of a strapping band limiting structure of the strapping machine; state one is a non-operational state defining a strap;

FIG. 15 is a front view of a second state of the strapping band limiting structure of the strapping machine; the second state is the working state of the binding belt;

FIG. 16 is a side view of a second state of the strapping band limiting structure of the strapping machine;

FIG. 17 is a schematic perspective view of the packer in another embodiment;

FIG. 18 is another perspective view of the baler in another embodiment;

FIG. 19 is a schematic right side view of the baler of another embodiment;

FIG. 20 is a schematic view showing a welding state switching mechanism of the wrapping machine in another embodiment; the eccentric wheel is omitted in the drawing;

fig. 21 is a rear view of a welding state switching mechanism of another embodiment;

wherein:

the device comprises a machine base 1, a strapping tape tightening mechanism 2, a tightening wheel 21 and a tightening plate 22;

3, a strapping welding mechanism, a 31 eccentric shaft, a 32 welding frame, a 321 positioning groove, a 33 welding arm, 34 welding upper teeth, 341 limit protrusions, a 342 sliding groove, 343 balls, 35 welding lower teeth, 36 cutters and 37 second elastic components;

4a take-up wheel lifting mechanism, a 40 pivot, a 41 take-up wheel swing seat, a 41a take-up wheel swing seat movable side, a 42 swing rod, a 43 connecting assembly, a 431 connecting rod, a 431a limiting groove hole, a 432 switching swing part, a 432a meshing part, a 44 elastic assembly and a 46 first elastic component;

5 planetary gear train, 5a rotation axis, 61 drive gear, 62 first ring gear, 63 first sun gear, 64 first planet gear, 64a carrier, 65 second ring gear, 66 second sun gear, 67 second planet gear;

7 driving mechanisms, 71 first driving mechanisms, 71a output shaft, 71b corner driving bevel gears, 71c corner driven bevel gears, 71d input shafts, 72 second driving mechanisms, 711 first synchronizing gears, 712 second synchronizing gears and 713 tooth-shaped synchronous belts;

8, a welding state conversion mechanism, an 81 eccentric wheel, an 82 swing bracket, an 83 compression column, a 831 pressure head, an 841 upper roller, a 842 lower roller, an 85 swing arm, an 85a swing arm rotation axis, an 86 compression column buffer structure, an 861 spring, an 871 upper positioning seat and an 872 lower positioning seat;

90 rocking plates, 91 left inner limit plates, 92 right inner limit plates, 93 left outer limit plates, 94 right outer limit plates, 95 adjustable bar-shaped connecting holes, 101 first travel switches, 102 second travel switches and 103 third travel switches.

Detailed Description

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 will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "vertical," "horizontal," "left," "right," "up," "down," "inner," "outer," "bottom," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.