Film coating machine
阅读说明:本技术 一种包膜机 (Film coating machine ) 是由 张万财 冯俊敏 吴婷婷 于 2020-08-17 设计创作,主要内容包括:一种包膜机,属于电池封装领域。包膜机包括按照工序位依次排布的大面包膜装置、剪二字装置以及折边装置。其中大面包膜装置用以对电池的大面进行包膜,剪二字装置用以对在电池底部对应的蓝膜进行剪切操作以形成二字型缺口,然后再通过折边装置对剪切后的蓝膜进行折边。该包膜机能够以更小的改造成本兼容U型包膜和回型包膜两种工艺,从而实现电池包膜工艺中的更低的设备采购成本和更高的包膜灵活性。(A film coating machine belongs to the field of battery packaging. The film coating machine comprises a large-surface film coating device, a two-character shearing device and a folding device which are sequentially arranged according to the working procedure positions. The large-face coating device is used for coating the large face of the battery, the two-character shearing device is used for shearing the blue film corresponding to the bottom of the battery to form a two-character notch, and then the sheared blue film is folded through the folding device. The film coating machine can be compatible with two processes of U-shaped film coating and reverse-shaped film coating with smaller modification cost, so that lower equipment purchase cost and higher film coating flexibility in the battery film coating process are realized.)
1. A film wrapping machine, characterized by comprising:
the large-surface film coating device is provided with a power transmission battery mechanism and a film pressing mechanism which are sequentially arranged;
the battery feeding mechanism is provided with a tensioning roller, a first rack and a first conveying track which are connected in a transverse and longitudinal mode, the tensioning roller is connected to the rack and located at the outlet end of the first conveying track, the film pressing mechanism comprises film pressing rollers which are arranged oppositely, a second rack and a second conveying track which are connected in a transverse and longitudinal mode, and the film pressing rollers are located at the inlet end of the second conveying track and connected to the second rack;
the device for cutting the double-character pattern comprises a third rack, a first displacement mechanism, a second displacement mechanism, a clamping plate mechanism and a cutter mechanism, wherein the third rack is connected to one side, away from the first rack, of the second rack;
the edge folding device is provided with a top edge folding mechanism and a bottom edge folding mechanism which are arranged oppositely, and the top edge folding mechanism and the bottom edge folding mechanism are distributed on two sides of the tail end of the second conveying track;
the top folding mechanism comprises a top folding frame, a first top folding plate and a second top folding plate, wherein the first top folding plate and the second top folding plate are arranged in the longitudinal and transverse directions and connected to the top folding frame;
the bottom folding mechanism comprises a bottom folding frame, a first bottom folding plate and a second bottom folding plate, wherein the first bottom folding plate and the second bottom folding plate are arranged in the longitudinal and transverse directions and connected to the bottom folding frame;
the large-surface film coating device, the two-character shearing device and the edge folding device are independently configured and sequentially arranged according to the working procedure positions.
2. The film wrapping machine of claim 1, wherein the battery feeding mechanism comprises a positioning roller connected to the first frame and located at an outlet end of the first conveying track, and the tensioning rollers are located at both sides of the positioning roller.
3. The film coating machine according to claim 1 or 2, wherein the battery feeding mechanism comprises a film drawing roller which is connected to the first frame in a liftable manner and is located at the outlet end of the first conveying track.
4. The film wrapping machine according to claim 3, wherein a film cutting knife is connected to the second machine frame, and the film cutting knife is located at the inlet end of the second conveying track and can reciprocate along the width direction of the second conveying track.
5. The film wrapping machine of claim 1, wherein the lamination rollers comprise an upper roller and a lower roller with an adjustable lamination gap therebetween.
6. The film coating machine according to claim 1, wherein the two-letter shearing device has two groups and is respectively located at two sides of the second conveying track.
7. The film wrapping machine of claim 1, 5 or 6, wherein the top folding mechanism and the bottom folding mechanism are respectively provided with a pair of pressing plates, and each pair of pressing plates can be relatively far away or close to each other.
8. The film wrapping machine of claim 1 wherein the first top flap and the second top flap are each linearly reciprocated by a top displacement mechanism attached to the top folding frame.
9. The film wrapping machine of claim 1 or 8 wherein the first bottom flap is linearly reciprocated by a bottom displacement mechanism connected to the bottom folding frame.
10. The film wrapping machine of claim 9 wherein the second bottom flaps are driven in a reciprocating rotary motion by a bottom rotating mechanism attached to the bottom folding frame.
Technical Field
The application relates to the field of battery packaging, in particular to a film coating machine.
Background
The blue coating of the square hard-shell battery refers to: and coating a blue protective film on the outer surface of the battery.
The blue film is generally wrapped around the surface of the battery before shipment. Which can ensure good insulation of the outer surface of the battery and is therefore an indispensable part of the battery production process. The battery can be protected by wrapping the blue film on the battery, the surface of the battery is protected from being scratched and corroded by electrolyte, and the appearance of the battery is more attractive.
At present, the process of coating blue films on batteries is basically completed by automation equipment and manpower, and the equipment is divided into a U-shaped film coating machine and a reverse-shaped film coating machine.
However, the two film coating machines are completely independent, so that the two sets of equipment need to be specifically equipped to meet the requirements based on different film coating modes. If another coating mode is replaced, the coating equipment needs to be replaced, so that the cost and the labor input of a company are increased. Alternatively, an existing film coating machine can be optionally modified so as to be suitable for another film coating mode. However, the existing film coating machine has long modification period and great difficulty.
Disclosure of Invention
In order to improve, solve foretell coating machine transformation degree of difficulty even big, can not conveniently compatible U type and the problem of two kinds of film forms of returning the type, this application has proposed a coating machine.
The application is realized as follows:
in a first aspect, an embodiment of the application provides a film coating machine, which comprises a large-surface film coating device, a two-character shearing device and a folding device which are sequentially arranged according to process positions and are independently configured.
The large-surface film coating device is provided with a power transmission battery mechanism and a film pressing mechanism which are sequentially arranged; wherein, power transmission battery mechanism has tensioning roller, cross-connect's first frame and first delivery track, and the tensioning roller is connected in the frame and is located first delivery track's exit end, and press mold mechanism includes opposite press mold roller, cross-connect's second frame and second delivery track, and the press mold roller is located second delivery track's entry end and connects in the second frame.
The device for cutting the double-character pattern comprises a third rack, a first displacement mechanism, a second displacement mechanism, a clamping plate mechanism and a cutter mechanism, wherein the third rack is connected to one side, deviating from the first rack, of the second rack, the first displacement mechanism is connected to the third rack, the clamping plate mechanism, the cutter mechanism and the second displacement mechanism are connected to the first displacement mechanism, and the cutter mechanism is provided with a blade driven by the second displacement mechanism.
The edge folding device is provided with a top edge folding mechanism and a bottom edge folding mechanism which are arranged oppositely, and the top edge folding mechanism and the bottom edge folding mechanism are distributed on two sides of the tail end of the second conveying track; the top folding mechanism comprises a top folding frame, a first top folding plate and a second top folding plate, wherein the first top folding plate and the second top folding plate are arranged in the longitudinal and transverse directions and connected to the top folding frame; the bottom folding mechanism comprises a bottom folding frame, a first bottom folded plate and a second bottom folded plate, wherein the first bottom folded plate and the second bottom folded plate are arranged in the longitudinal direction and the transverse direction and are connected to the bottom folding frame, the first bottom folded plate is arranged in two opposite positions, and the second bottom folded plate is arranged in two opposite positions.
Optionally, the power feeding mechanism includes a positioning roller connected to the first frame and located at an outlet end of the first conveying rail, and the tension rollers are located at both sides of the positioning roller.
Optionally, the film feeding mechanism includes a film drawing roller, and the film drawing roller is connected to the first rack in a liftable manner and is located at the outlet end of the first conveying rail.
Optionally, the second frame is connected with a film cutting knife, and the film cutting knife is located at the inlet end of the second conveying track and can reciprocate along the width direction of the second conveying track.
Optionally, the lamination roller comprises an upper roller and a lower roller with an adjustable lamination gap therebetween.
Optionally, the two-letter shearing device has two groups, and is respectively located at two sides of the second conveying track.
Optionally, the top and bottom crimping mechanisms are each provided with a pair of platens, and each pair of platens can be relatively far apart or close together.
Optionally, the first top flap and the second top flap are each driven in a linear reciprocating motion by a top displacement mechanism connected to the top hemming frame.
Optionally, the first bottom flap is driven in a linear reciprocating motion by a bottom displacement mechanism connected to the bottom folding frame.
Optionally, the second bottom flap is driven in a rotationally reciprocating motion by a bottom pivoting mechanism connected to the bottom folding frame.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1-A is a schematic flow diagram of a conventional reverse-type coating process;
FIG. 1-B is a schematic flow chart of an existing U-shaped coating process;
fig. 2 shows a schematic structural view of the cooperation of a membrane with a battery after a first operation is performed in an encapsulation method of an example of the present application;
FIG. 3 shows a schematic diagram of the membrane-to-cell fit after a second operation in an encapsulation process according to an example of the present application;
fig. 4 shows a schematic view of a membrane mated with a battery at a first viewing angle after a third operation in an encapsulation process according to an example of the present application;
fig. 5 shows a schematic view of a membrane mated with a battery at a second viewing angle after a third operation in an encapsulation process according to an example of the present application;
fig. 6 shows a schematic view of a membrane mated with a battery at a third viewing angle after a fourth operation in an encapsulation process according to an example of the present application;
fig. 7 shows a schematic view of a membrane mated with a battery at a fourth viewing angle after a fourth operation in an encapsulation process according to an example of the present application;
fig. 8 shows a schematic structural view of a membrane and a battery after a fifth operation in an encapsulation method of an example of the present application;
fig. 9 is a schematic structural diagram of a film coating machine according to an embodiment of the present application;
FIG. 10-A is a schematic structural view of a large-surface film wrapping device in the film wrapping machine of FIG. 9;
FIG. 10-B is a schematic view of a film pressing mechanism in the large bread film forming apparatus of FIG. 10-A at a different viewing angle;
FIG. 10-C is a schematic diagram of the battery feeding mechanism in the large bread making device of FIG. 10-A at a different viewing angle;
FIG. 11 is a schematic structural view of a double-letter shearing device in the film coating machine of FIG. 9;
FIG. 12 is a schematic view of the folding device in the film wrapping machine of FIG. 9;
FIG. 13 is a schematic view of the bottom hemming mechanism of the hemming device of FIG. 12;
fig. 14 is a schematic view of the top hemming mechanism in the hemming device of fig. 12.
Icon: 900-a battery; 800-film material; 801-a first end portion; 802-a second end; 803-third end portion; 804-a fourth end; 100-a film coating machine; 101-large surface coating device; 102-a two-character cutting device; 103-a flanging device; 1011-a battery-feeding mechanism; 1012-film pressing mechanism; 10111-a first gantry; 10112-a first delivery track; 10113-tension roller; 10114-positioning rollers; 10115-film drawing roller; 112 a-bottom wheel; 112 b-side wheels; 10121-squeeze film roller; 10122-a second gantry; 10123-a second delivery track; 10124-film cutter; 1021-a third chassis; 1022 — a first displacement mechanism; 1023-a second displacement mechanism; 1024-a clamping plate mechanism; 1025-cutter mechanism; 1031-bottom edge folding mechanism; 10311-bottom edge folding frame; 10312-a first bottom flap; 10313-a second bottom flap; 1032-top crimping mechanism; 10321-a top hemming bed; 10322-a first top flap; 10323-a second top flap; 104-pressing plate.
Detailed Description
At present, the coating mode of the battery mainly comprises a reverse type coating (figure 1-A) and a U type coating (figure 1-B). However, the two coating methods need to be applied to production lines with completely different structures, namely, the two coating methods operate by completely different coating equipment. Therefore, two kinds of coating equipment are required to be equipped in actual production, so that the coating cost and the equipment purchase cost are high.
In view of the above, in the present application example, the inventor proposes a new film coating machine, and also proposes a film coating method implemented by using the film coating machine — a new circular film coating manner. The equipment can meet the process requirements of the double-sided envelope and the U-shaped envelope.
It should be noted that the above "compatible with existing envelopes and U-shaped envelope process" means: the film coating machine provided by the present application can implement a new type-reversing film coating method, see fig. 2 to 8 (different from the prior art type-reversing film coating method, fig. 1-a).
Meanwhile, the film coating machine can also realize the existing U-shaped film coating mode (the U-shaped film coating mode in the prior art, shown in the figure 1-B) through relatively small modification. The 'minor modification' refers to modification (relating to change of number and position) of the double-line shearing device and the edge folding device of the film coating machine in the example of the application. Compared with the prior art in which the whole coating equipment is directly replaced, the scheme of the application has the advantages of small modification difficulty and short period.
In addition, when the coating machine switches between different coating modes, the input mode of the battery can be properly adjusted by matching the two-character shearing device and the edge folding device.
Fig. 2 to 8 show a new coating method of the clip type in the present application, which first coats the side of the battery. Therefore, the cells were transported with the side facing the blue film at the time of feeding. And then the battery is reformed for coating the bottom surface of the battery when the U-shaped coating is carried out. Therefore, the battery is transported with the bottom surface facing the blue film at the time of feeding.
The battery encapsulation method implemented in the present application is described below with reference to examples. The novel dual-surface coating mode mainly comprises three links, namely a large surface coating mode, a bottom surface coating mode and a top surface coating mode.
It is noted that in the present example, the encapsulated
In addition, in the battery 900 (rectangular parallelepiped) corresponding to the above-described structure, the large surface thereof means a surface having a relatively large surface area. As in fig. 2, of the six faces of the
Accordingly, the (blue) film to wrap the
Therefore, the step of attaching the large faces mainly includes bending the two ends of the film in the second direction so as to wrap the first side face, the second side face, the first large face and the second large face of the
The following describes the method of the battery film-wrapping material in examples with reference to the drawings (fig. 2 to 8).
Step S101 is to attach the
As shown in fig. 2, the
Step S102, folding the
As shown in fig. 3, the first end 801 and the second end 802 of the
Thus, the first side, the second side, the first large side, and the second large side of the
Step S103, cutting the fourth end 804 of the
In this step, the bottom surface of the
By this operation, the portion of the
Step S104, folding the first and second large folded portions to cover the bottom surface, and then folding the first and second side folded portions to cover the first and second large folded portions.
Through the above-described double-letter cutting operation, portions of the
As shown in fig. 6 and 7, first folding the first large folded portion and the second large folded portion extending in the same direction as the first large face and the second large face, respectively, to cover the bottom face; the ends of the first and second large folds are in close proximity to completely cover the bottom surface of the
Then, the first side folded part and the second side folded part extending in the same direction as the first side and the second side, respectively, are folded. Accordingly, the first and second side folded parts are overlapped on the first and second large folded parts, so that the two large folded parts (the first and second large folded parts) are pressed against the bottom surface of the
Step S105, folding the third end 803 to cover the top surface.
Through the processes of the above steps S101 to S104, the first large surface, the second large surface, the first side surface, the second side surface, and the bottom surface of the
Corresponding to the coating method of the
Corresponding to the coating method, the coating machine mainly comprises three parts which are a large surface pasting structure, a cutting structure and a folding structure. Wherein paste the big face structure and be used for pasting the big face to the battery, tailor the structure and be used for cutting two characters to the membrane material, hem structure is used for pasting top surface or bottom surface to the battery. Moreover, the above structures can also work relatively independently, so that different functional modules can be selectively executed according to the requirements of the coating method, so as to realize corresponding coating operation.
It should be noted that, in the present application example, the operation mode of the film coating machine is described corresponding to the above film coating method. However, this is not a limitation, and the film coating machine can be used only for carrying out the above film coating method. The coating process shown in fig. 1-a and 1-B can also be performed by using a coating machine as described below.
The coating machine in the application example has the following advantages:
(1) the coating machine can be seamlessly switched to a circular coating mode or a U-shaped coating mode, so that the limitation of equipment is avoided, the market demands of different coating modes are met, and the coating machine has good compatibility.
(2) Because the two devices are combined into one device, the cost of one device is eliminated, and the purchase cost of the device is reduced.
(3) The function of many equipment can be realized to an equipment, consequently, can reduce equipment to improve the workshop utilization ratio, and integrated equipment area is little, and the factory building input cost is low.
(4) The labor cost is saved, and the operation posts of one device are reduced by the integrated device.
The film coating machine in the present application example is described in detail below with reference to the accompanying drawings.
Referring to fig. 9, the film wrapping machine 100 includes a large-face
In the whole process of coating the battery, the battery sequentially passes through the large-
Large-
The structure of the large-
The large-
In the example, the power
Wherein the
The first conveying
The battery is conveyed in a pushing mode in the application example, and the track is also provided with rollers capable of rotating passively for stable conveying of the battery. Thereby, the conveying resistance can be reduced by the roller when the battery is pushed. In addition, the posture of the battery in the conveying process can be controlled by selecting the arrangement mode of the rollers. Illustratively, the scroll wheel may have a
Further, as an alternative, the
The film feed roller 10115 may be disposed in the
In an example, the
The
The
But the coating machine can also be provided with a film cutting knife 10124 based on the requirement of continuous production. In an example, the slit film knife 10124 is attached to the
Thus, the blue film can be supplied and used in a continuous roll for continuous production. In actual production, the film drawing roller 10115 is bonded to the end of the blue film, the film drawing roller 10115 is located at the lower part of the
Two-character cutting device 102
Referring to fig. 11, the word cutting device 102 includes a third frame 1021, a first displacement mechanism 1022, a second displacement mechanism 1023, a clamping mechanism 1024, and a cutter mechanism 1025.
The first and second displacement mechanisms 1022, 1023 are used to provide drive to move the components as needed. Wherein the first displacement mechanism 1022 can move the second displacement mechanism 1023, the clamp plate mechanism 1024, and the cutter mechanism 1025 as a whole, for example, in the width direction of the second conveying
The third frame 1021 is connected to the
As the name implies, the clipping device 102 is a device for making a two-letter notch at a selected position of the blue membrane. The two-letter cutting is mainly implemented by cutting the blue film through a cutter structure. In order to smoothly perform the cutting operation and to avoid curling, wrinkling, or the like of the blue film (particularly, considering the adhesiveness of the blue film), the clip mechanism 1024 is used to fix the portion of the blue film that requires the clipping of the double line. The blue film is thus clamped by the clamp mechanism 1024 and cut by the cutter mechanism 1025.
Corresponding to the two-letter cut, the cutter mechanism 1025 has two blades and can be driven by the second displacement mechanism 1023, thereby achieving two notches at a time to form a two-letter notch. Alternatively, the cutter structure may have a single blade with two notches formed by two cutting operations.
The clamping mechanism 1024 has two jaws and is driven to open and close by, for example, a movable slider so as to clamp or release the blue film. As a structure for cooperating with the knife mechanism 1025, the clip may be provided with two knife slots (in the present exemplary embodiment) for the blades to pass through. Therefore, the two clamping pieces can have larger contact area with the blue film, and a better clamping effect is achieved. The blade then cuts the blue film through the knife slit. Alternatively, in other examples, one of the clips has a relatively small dimension, such as less than the spacing between two blades. Therefore, the blade can cut the blue film directly by passing through the clip.
Since the battery is a rectangular parallelepiped, two cutouts are formed in the blue film at two places when the battery is cut in a two-letter shape. Therefore, the two-character cutting device is two (one group). Further, two sets of the device for cutting two words may be provided as required, and are respectively located at two sides of the second conveying
Hemming device 103
Referring to fig. 12, 13 and 14, the folding device includes a top folding mechanism 1032 and a bottom folding mechanism 1031, which are oppositely disposed, in this example, at both sides of the end of the second conveying
The top folding mechanism 1032 includes, among other things, a
The bottom folding mechanism 1031 includes a bottom folding frame 10311, and a first bottom flap 10312 and a second bottom flap 10313 arranged in the longitudinal and transverse directions and connected to the bottom folding frame 10311. The first bottom flaps 10312 are two and opposing, and the second bottom flaps 10313 are two and opposing. Accordingly, the two first bottom flaps 10312 and the two second bottom flaps 10313 apply a hemming operation to the blue film at the bottom of the battery from four orientations.
The folding mechanism may perform the folding action by a mechanism that can move linearly, for example, the folding mechanism is implemented by a cylinder and a bending plate that reciprocate linearly. The four edge folding mechanisms are respectively opposite to the parts of the blue film, which need to be folded, and the corresponding bending plates are pushed by the air cylinders to move towards the blue film, so that the blue film is bent and adhered to the battery. Accordingly, the hemming device may be correspondingly equipped with a top displacement mechanism and a bottom displacement mechanism as the above-described linear reciprocating motion apparatus.
In addition, in order to increase the frictional force so that the blue film can be bent while avoiding mechanical damage to the blue film, the bending plate may be sleeved with a rubber sleeve so as to contact the blue film through the rubber sleeve when the blue film is bent.
In the example, for implementing the new dual-type envelope method, the blue film on the top of the battery does not need to be cut into two characters, and the blue film on the bottom of the battery does not need to be cut into two characters. Therefore, corresponding to the blue film structure and the envelope method of this method, the
When the blue films positioned at the bottom and the top of the battery are bent, the hemming device may be provided with a posture-maintaining member in order to prevent the posture of the battery from being changed. Since the hemming device mainly has two parts, the posture maintaining members correspondingly have two parts. For example, the top and bottom hemming mechanisms 1032 and 1031 are respectively provided with a pair of
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
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