Cell film sleeving equipment

Abstract

The utility model relates to the field of battery cell film sleeving, in particular to battery cell film sleeving equipment which is characterized in that a movable module is arranged on a rotating table, a jig is arranged at the movable end of the movable module, and the movable module has the moving direction enabling the jig to move towards the final position of a feeding track; the opening mechanism is provided with a group of adsorption end parts which are opposite to each other and respectively move towards the front and back surfaces of the rotating table, and any adsorption port corresponds to the opening structure. A packaging film is broken into a plurality of sections through the cutter assembly, the single section of the packaging film is fed into the opening mechanism through the rotating table, the two surfaces of a packaging belt are adsorbed through the adsorption end, the packaging film is pulled through resetting, and the packaging film achieves the opening effect. Adsorption force acting outside the packaging film becomes external force for keeping the packaging film flat when the battery cell enters the film, and compared with a traditional two-way moving film sleeving mode, the problem that the film entering depth of the battery is not enough due to wrinkles can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of cell film covering, especially a cell film covering device. Background Art

[0002] After the production of the cell is completed, a layer of packaging film needs to be covered. After packing, it is transported away.

[0003] At present, an automated device is used to cover the film on the cell. Due to its excellent production efficiency and stability, it has gradually replaced the traditional manual film covering method.

[0004] For example, the patent number is 201510383055.X, and the name is a battery casing machine.

[0005] The current structure of the automated film covering device is generally the battery casing machine retrieved above. Generally, the film is successfully covered on the battery. However, in some cases, there is a situation where the battery cannot enter the film.

[0006] The main reason is that a relatively thin packaging film is used. This kind of packaging film has low toughness and weak stretching effect. The battery enters the stretched packaging film horizontally. Considering the increasing weight of the battery itself at present, there is a large frictional force between the part of the packaging film pressed by the battery and the battery. At this time, the packaging film cannot continue to move forward and wrinkles will occur at the same time. The battery does not reach the expected entry depth, and the packaging film does not fully cover the battery, resulting in the inability to perform heat shrink packaging on the packaging film subsequently. Content of the Utility Model

[0007] To solve the above problems, the utility model provides a cell film covering device, aiming to solve the problem that using a relatively thin packaging film will result in insufficient film entry depth of the battery.

[0008] To achieve the above object, the technical solution adopted by the utility model is: A cell film covering device, characterized by comprising:

[0009] A rotating table, a film feeding mechanism, an opening mechanism, and a jig;

[0010] The film feeding mechanism has a feeding track for guiding the packaging film to be sent out, and a cutter assembly for cutting off the packaging film on the feeding track;

[0011] A moving module is provided on the rotating table, and the jig is arranged at the movable end of the moving module. The moving module has a moving direction for moving the jig to the end position of the feeding track;

[0012] The jig has a working area for placing the packaging film, and a plurality of open structures are reserved on the working area;

[0013] The opening mechanism is provided with a set of adsorption ends that face each other and move towards the front and back surfaces of the jig respectively, and any adsorption port corresponds to the above-mentioned open structure.

[0014] Further, the jig includes a baffle plate, a positioning plate, a pressing wheel, a swinging member, a spring, and a limiting seat. The working area is the positioning groove on the positioning plate corresponding to the packaging film. The baffle plate is arranged in the positioning groove, and the limiting seat is distributed in the areas on both sides of the positioning groove. The limiting seat is in a shape with a raised middle. The swinging member passes through the limiting seat and is rotatably connected to the limiting seat. The first end of the swinging member is connected to the pressing wheel, and its second end abuts against the spring restricted on the positioning plate. In the free state of the spring, the pressing wheel abuts against the packaging film.

[0015] Further, the moving module includes a first telescopic cylinder, a first slide rail, and a tension spring. The first telescopic cylinder and the first slide rail are both arranged on the surface of the rotating table. A first slider that is slidably matched with the first slide rail is provided at the bottom of the positioning plate. One end of the tension spring is connected to the bottom of the positioning plate, and the other end of the tension spring is connected to the rotating table. A push block is provided on the piston rod of the first telescopic cylinder, and a bearing opposite to the side surface of the positioning plate is provided on the push block.

[0016] Further, it also includes a push battery core mechanism. The push battery core mechanism is adjacent to the opening mechanism and the rotating table at the same time. The push battery core mechanism includes a placement table, an ejection module, a guiding seat, and guiding elastic pieces. The placement table is provided with a placement groove adapted to the battery core, and the axial direction of the placement groove points to the closest jig on the rotating table. The output end of the ejection module is opposite to the end of the battery core. The guiding seat is connected to the placement table and is located on the moving path when the battery core is ejected. The guiding seat has an opening for the battery core to pass through, and the guiding elastic pieces are distributed in a conical shape on the edge of the opening and face the rotating table.

[0017] Further, on the feeding track, there is also a lifting module located above the positioning plate. The output end of the lifting module is connected with a pressing plate, and a pressing column corresponding to the above-mentioned second end is provided on the pressing plate.

[0018] Further, a jacking module is also provided at the bottom of the rotating table. The output end of the jacking module is provided with a constraint member adapted to the circumferential surface of the battery core, and a slot cooperating with the constraint member is provided on the rotating table.

[0019] Further, the opening mechanism is an adsorption platform arranged at the output end of the linear moving module, and a negative pressure suction nozzle facing the packaging film is provided on the adsorption platform.

[0020] Further, the cutting knife assembly is located at the end position of the feeding track. The cutting knife assembly includes a cutting knife cylinder and a cutting knife. The cutting knife is located below the packaging film, and the cutting knife cylinder is connected to the cutting knife.

[0021] The beneficial effects of the present utility model:

[0022] The utility model relates to a core film covering device, which mainly provides a core film covering method different from the traditional one. The utility model uses a cutter assembly to break the packaging film into multiple sections, and utilizes a rotating table to send the single-section packaging film into an opening mechanism. The adsorption end adsorbs two surfaces of the packaging tape, and pulls the packaging film through resetting, so that the packaging film achieves an opening effect. The adsorption force acting on the outside of the packaging film becomes the external force to maintain the flatness of the packaging film when the core enters the film. Compared with the traditional film covering method of bidirectional movement, the utility model can effectively solve the problem that the depth of the battery entering the film is insufficient due to wrinkles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of the utility model.

[0024] Figure 2 is Figure 1 an enlarged schematic view of part A of

[0025] Figure 3 is a perspective view of the utility model from another perspective.

[0026] Figure 4 is Figure 3 an enlarged schematic view of part B of

[0027] Figure 5 is Figure 3 an enlarged schematic view of part C of

[0028] Figure 6 is Figure 4 an enlarged schematic view of part E of

[0029] Figure 7 is a perspective view of the rotating table.

[0030] Figure 8 is Figure 7 an enlarged schematic view of part D of

[0031] Figure 9 is a position relationship diagram between the constraint member and the positioning plate in a three-dimensional state.

[0032] Figure 10 is a perspective view of the opening mechanism.

[0033] Figure 11 is a perspective view of the assembled rotating table and the opening mechanism.

[0034] Figure 12 is Figure 11 a schematic view after removing part of the packaging film in

[0035] Figure 13 is a perspective view of the core pushing mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] As shown Figures 1-3 in the figure, the utility model is a core film sleeving device. In the core film sleeving device, after the packaging film is opened, it is fixed. During the film sleeving process, only the core 6 moves into the packaging film.

[0037] Specifically, this core film sleeving device has the following structure:

[0038] A jig 1, a rotating table 2, a film feeding mechanism 3, and an opening mechanism 4 arranged on the frame;

[0039] The film feeding mechanism 3 has a feeding track for sending out the packaging film 5 and a cutter assembly 31 for cutting the packaging film 5 on the feeding track;

[0040] A moving module is provided on the rotating table 2, and the jig 1 is arranged at the movable end of the moving module. The moving module has a transportation direction for moving the jig 1 to the end position of the feeding track;

[0041] A working area for placing the packaging film 5 is provided on the jig 1. The packaging film 5 enters and exits different workstations (film feeding, film sleeving, film opening) under the action of the rotating table 2;

[0042] As shown Figure 9 in the figure, the opening mechanism 4 includes a group of adsorption ends that are opposite to each other and move towards the front and back surfaces of the jig 1 respectively. Among them, a plurality of open structures 44 are reserved on the above-mentioned working area, and any adsorption port corresponds to the above-mentioned open structure 44.

[0043] The combination mode of the utility model mainly provides a film sleeving method:

[0044] Position the single-section packaging film 5, then open the packaging film 5, and then push the core 6 into the packaging film 5. The adsorption ends included in the opening mechanism 4 directly act on the upper and lower surfaces of the packaging film 5, and through the effect of negative pressure combined with moving towards the front and back surfaces of the rotating table 2, the entire packaging film 5 is opened.

[0045] During the process of the core 6 entering the film, the packaging film 5 will not move towards the core 6. With the action of the adsorption ends, the packaging film 5 remains stationary after being opened. Even if there is a large friction force between the core 6 and the packaging film 5 when the core 6 enters the film, the packaging film 5 still will not wrinkle. The negative pressure can ensure that the packaging film 5 is in a smooth state. To sum up, this method of packaging the core 6 can avoid the situation where the packaging film 5 wrinkles and causes insufficient film entry depth.

[0046] As shown Figure 4 and 6As shown, the above-mentioned jig 1 is composed of a baffle 100, a positioning plate 101, a pressing wheel 102, a swinging member 103, a spring 104, and a limiting base 105. This combination method is based on the shape and state of the single-section packaging film 5, as well as the situation of preventing the packaging film 5 from being thrown off the rotating table 2 when the rotating table 2 rotates.

[0047] The working area is the positioning groove 101-a on the positioning plate 101 corresponding to the packaging film 5 (as Figure 12 shown). The baffle 100 is arranged in the positioning groove 101-a, and the limiting bases 105 are distributed in the areas on both sides of the positioning groove 101-a. The limiting bases 105 are in a shape with a convex middle. The swinging member 103 passes through the limiting bases 105 and is rotatably connected to the limiting bases 105. The first end of the swinging member 103 is connected to the pressing wheel 102, and its second end 103a is connected to the spring 104 on the positioning plate 101. In the free state of the spring 104, the pressing wheel 102 abuts against the packaging film 5.

[0048] From Figure 4 it can be seen that the pressing wheel 102 is located above the packaging film 5 and presses on the packaging film 5 under the action of the spring 104, thereby positioning the packaging film 5 in the positioning groove 101-a. In addition, using the pressing wheel 102 to directly contact the packaging film 5 is mainly based on its own rolling effect and will not cause damage to the packaging film 5.

[0049] Since the positioning groove 101-a is the area for accessing the new packaging film 5, therefore, at the end position of the feeding track, a lifting module 61 located above the positioning plate 101 is provided. The output end of the lifting module 61 is connected with a pressing plate 62, and the pressing plate 62 is provided with a pressing column 63 corresponding to the second end 103a of the swinging member 103. This is a means to lift the pressing wheel 102. At this time, the packaging film 5 on the feeding track can enter the positioning groove 101-a. The pressing column 63 on the lifting module 61 and the second end 103a of the swinging member 103 are in a relative position relationship. The swinging member 103 is also rotationally related to the arched limiting base 105. Therefore, the lifting module 61 lowers the pressing column 63, and the pressing column 63 forces the swinging member 103 to rotate in a way that the pressing wheel 102 is lifted from the positioning groove 101-a; after the new packaging film 5 is loaded into the positioning groove 101-a, the position of the pressing wheel 102 is reset. Similarly, the spring 104 that has been compressed and deformed also lifts the second end 103a of the pressing wheel 102 through resetting, so that the pressing wheel 102 presses on the new packaging film 5.

[0050] The area on the surface of the rotating table 2 corresponding to the jig 1 is a notch.

[0051] As Figures 7-8 shown in and 11, on the rotating table 2, the moving module for realizing the movement of the jig 1 includes the following structures:

[0052] The first telescopic cylinder 21, the first slide rail, and the tension spring 22 are all arranged on the surface of the turntable 2. The bottom of the positioning plate 101 is provided with a first sliding block that slides with the first slide rail. One end of the tension spring 22 is connected to the bottom of the positioning plate 101, and the other end of the tension spring 22 is connected to the turntable 2. A push block 23 is provided on the piston rod of the first telescopic cylinder 21, and a bearing 24 opposite to the side of the positioning plate 101 is provided on the push block 23; this structure has two actions of active pushing and passive resetting. The advantage is that the resetting effect of the tension spring 22 responds quickly and can readjust the position of the positioning plate 101 in time.

[0053] In this embodiment, there is one movable module and four jigs 1. In the above description of the movable module, a bearing 24 is provided on the push block 23 opposite to the side of the positioning plate 101. When the rotating table 2 rotates, the rotation ability of the bearing 24 makes it have a relatively low friction coefficient, which can cope with the jig 1 with alternating positions, reduces wear on the jig 1, and extends its service life.

[0054] like Figure 5 、 13 As shown, it further includes a battery cell pushing mechanism 7, which is adjacent to the opening mechanism 4 and the rotating table 2 at the same time. The battery cell pushing mechanism 7 includes a placement table 71, an ejection module 72, a guide seat 73, and a guide spring 74. The placement table 71 is provided with a placement groove 71-a adapted for the battery cell 6. The output end of the ejection module 72 is opposite to the end of the battery cell 6. The guide seat 73 is connected to the placement table 71 and is located on the moving path when the battery cell 6 is ejected. The guide seat 73 has an opening for the battery cell 6 to pass through. A plurality of guide springs 74 are distributed on the edge of the opening. The outer ends of the plurality of guide springs 74 are close to each other, so that the composition of the plurality of guide springs 74 is conical, and the inclination direction of the cone is toward the surface of the rotating table 2.

[0055] The battery cell pushing mechanism 7 provides power to push the battery cell 6 into the packaging film 5. The battery cell 6 is pre-placed on the placement table 71. The ejection module 72 has the direction to push the battery cell 6 into the space surrounded by multiple guide springs 74. The battery cell 6 adjusts its position under the constraint of the guide springs 74 to ensure that the battery cell 6 can accurately enter the packaging film 5.

[0056] The process of pushing the battery cell 6 is performed after the packaging film 5 is opened.

[0057] like Figure 9As shown in the figure, further, a jacking module 81 is provided at the bottom of the rotating table 2. A bottom plate 82 is provided at the output end of the jacking module 81. A constraint member 83 adapted to the peripheral surface of the battery cell 6 is provided on the bottom plate 82. A slot 21 adapted to the constraint member 83 is provided on the rotating table 2. Specifically, the constraint member 83 is a vertical plate with a V-shaped card slot on the side. The card slot holds the outer periphery of the battery cell 6, which positions the battery after film insertion and prevents the battery from being thrown off when the rotating table 2 rotates.

[0058] The above card slot can also be set in an arc shape.

[0059] As Figure 10 shown in the figure, further, the opening mechanism 4 is an adsorption platform 41 provided at the output end of the linear movement module 42. A negative pressure suction nozzle 43 facing the packaging film 5 is provided on the adsorption platform 41.

[0060] In this embodiment, one set of the linear movement module 42 and the adsorption platform 41 is provided.

[0061] As Figure 4 shown in the figure, further, the cutter assembly 31 is located at the end position of the feeding track. The cutter assembly 31 includes a cutter cylinder 3101 and a cutter 3102. The cutter 3102 is located below the packaging film 5. The cutter cylinder 3101 is connected to the cutter 3102. In the present utility model, a single-section packaging film 5 is sleeved on the battery cell 6, and the cutter assembly 31 provides a specific structure to cut the continuous packaging film 5 (rolled film) into sections.

[0062] The above lifting module 61, ejecting module 72, jacking module 81, linear movement module 42, and film supply mechanism 3 are all prior arts. Therefore, their structures will not be further described.

[0063] The above embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A core film covering device, characterized in that, Comprising: A rotating table, a film feeding mechanism, an opening mechanism, and a jig; The film feeding mechanism has a feeding track for guiding the packaging film to be sent out, and a cutter assembly for disconnecting the packaging film on the feeding track; A moving module is provided on the rotating table, and the jig is arranged at the movable end of the moving module. The moving module has a moving direction for moving the jig to the end position of the feeding track; The jig has a working area for placing the packaging film, and a plurality of open structures are reserved on the working area; The opening mechanism is provided with a group of adsorption ends that face each other and move towards the front and back surfaces of the jig respectively, and any adsorption port corresponds to the above open structure; 2. The core film covering device according to claim 1, characterized in that, The jig includes a baffle, a positioning plate, a pressing wheel, a swinging member, a spring, and a limiting seat. The working area is a positioning groove on the positioning plate corresponding to the packaging film. The baffle is arranged in the positioning groove. The limiting seat is distributed in the area on both sides of the positioning groove. The limiting seat is in a shape with a middle arch. The swinging member passes through the limiting seat and is rotatably connected to the limiting seat. The first end of the swinging member is connected to the pressing wheel, and the second end thereof abuts against the spring restricted on the positioning plate. In the free state of the spring, the pressing wheel abuts against the packaging film; 3. The core film covering device according to claim 1, characterized in that, The moving module includes a first telescopic cylinder, a first slide rail, and a tension spring. The first telescopic cylinder and the first slide rail are both arranged on the surface of the rotating table. A first slider that is slidably matched with the first slide rail is provided at the bottom of the positioning plate. One end of the tension spring is connected to the bottom of the positioning plate, and the other end of the tension spring is connected to the rotating table. A push block is provided on the piston rod of the first telescopic cylinder, and a bearing opposite to the side surface of the positioning plate is provided on the push block; 4. A cell film covering device according to claim 1, characterized in that, It further includes a battery core pushing mechanism. The battery core pushing mechanism is adjacent to the opening mechanism and the rotating table at the same time. The battery core pushing mechanism includes a placing table, an ejecting module, a guiding seat, and a guiding elastic sheet. The placing table is provided with a placing groove suitable for the battery core. The axial direction of the placing groove points to the nearest jig on the rotating table. The output end of the ejecting module is opposite to the end of the battery core. The guiding seat is connected to the placing table and is located on the moving path of the battery core when it is ejected. The guiding seat has an opening for the battery core to pass through. The guiding elastic sheets are distributed in a conical shape on the edge of the opening and face the rotating table; 5. The cell film covering device according to claim 2, wherein, On the feeding track, there is also a lifting module located above the positioning plate. The output end of the lifting module is connected with a pressing plate, and a pressing column corresponding to the second end is provided on the pressing plate; 6. A core film covering device according to claim 1, characterized in that, A jacking module is further provided at the bottom of the rotating table. The output end of the jacking module is provided with a constraining member suitable for the circumferential surface of the battery core, and a slot cooperating with the constraining member is provided on the rotating table; 7. A core film covering device according to claim 1, characterized in that, The opening mechanism is an adsorption platform arranged at the output end of the linear moving module, and a negative pressure suction nozzle facing the packaging film is provided on the adsorption platform; 8. A cell film covering device according to claim 1, characterized in that, The cutter assembly is located at the end position of the feeding track. The cutter assembly includes a cutter cylinder and a cutter. The cutter is located below the packaging film, and the cutter cylinder is connected to the cutter;

Images