Shearing unit based on lithium battery polymer cell aluminum plastic film shell punching machine

Abstract

The utility model discloses a shearing unit based on a lithium battery polymer cell aluminum plastic film shell punching machine, which comprises a transfer mechanism, a shearing mechanism, an infrared distance meter and a PLC (Programmable Logic Controller), transfer of the aluminum plastic film is achieved through cooperation of the transfer roller and the auxiliary roller, stability is better, abrasion is small, the shearing mechanism and the transfer mechanism are controlled in a linkage mode through the PL controller, an infrared distance meter is additionally arranged for induction, the shearing mechanism and the transfer mechanism can be controlled to act or brake according to actual conditions, and once deviation occurs, the shearing mechanism and the transfer mechanism can be automatically cut off. And proper adjustment can be performed by controlling the transfer mechanism, so that the yield is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of automated mechanical equipment, in particular to a shearing unit based on a lithium battery polymer core aluminum-plastic film shell punching machine. Background Art

[0002] Polymer lithium battery is a kind of lithium battery. It is a liquid lithium-ion battery covered with a polymer shell and structurally packaged with aluminum-plastic film. The existing aluminum-plastic film packaging operation of polymer lithium battery is generally to cut the soft-package aluminum-plastic film containing the battery core and then punch a hole, put the battery core into the aluminum-plastic film hole, fold it in half and then package it. The following steps are required in sequence: short circuit test - top sealing and cutting - side sealing and cutting - unloading to complete the packaging.

[0003] In terms of aluminum-plastic film forming process, shell punching equipment is mostly used to punch and form the aluminum-plastic film. The utility model patent with patent number CN202220661697.7 applied by the applicant in 2022 discloses a lithium battery polymer cell aluminum-plastic film shell punching machine, which is a first-generation product, including a workbench 1, a center seat 2, a feeding mechanism 3, a clamping mechanism 4, a shell punching mechanism 5, two-way horizontal guide rods 100, a shearing mechanism 6 and a transfer mechanism 7. The center seat 2 is fixedly arranged on the workbench 1, and the two-way horizontal guide rods 100 are horizontally slidably arranged on the top frame of the workbench 1. The feeding mechanism 3 is arranged on one side of the center seat 2, and the clamping mechanism 4 is arranged on the center seat 2. The shell punching mechanism 5 is arranged directly below the clamping mechanism 4 and cooperates with the clamping mechanism 4. The shearing mechanism 6 is fixedly arranged at one end of the two-way horizontal guide rods 100 away from the feeding mechanism 3. The transfer mechanism 7 is slidably assembled on the two horizontal guide rods 100 and is located between the center seat 2 and the shearing mechanism 6. This prior art can realize the continuous cycle operation of aluminum-plastic film feeding - pressing - punching and forming - cutting - discharging. On an aluminum-plastic film of a specific width, multiple battery cell packages can be punched out at the same time. However, it is found in actual production application that there are deficiencies in the shearing stage of the aluminum-plastic film:

[0004] 1. The transfer mechanism 7 first clamps the aluminum-plastic film passing through, and then drives the aluminum-plastic film to move in the direction of the shearing mechanism 6 through the screw drive, and transfers the aluminum-plastic film back and forth. This dynamic transfer of the overall structure is not stable enough and causes greater wear;

[0005] 2. The shearing mechanism 6 can only work according to the preset inherent shearing frequency. If there is a deviation between the shearing frequency and the transmission rate of the aluminum-plastic film, the cutting position will be inaccurate, which will cause the aluminum-plastic film battery package after molding to be inconsistent in shape and size, and non-standard, requiring subsequent secondary processing, and there may be a large number of defective products. Utility Model Content

[0006] The main purpose of the utility model is to provide a shearing unit based on a lithium battery polymer core aluminum plastic film shell punching machine to overcome the shortcomings of the transport mechanism and shearing mechanism of the first generation of products.

[0007] In order to solve the above technical problems, the utility model proposes a shearing unit based on a lithium battery polymer battery core aluminum plastic film punching machine, comprising a transport mechanism, a shearing mechanism, an infrared rangefinder and a PLC controller;

[0008] The transfer mechanism comprises:

[0009] A base fixedly mounted on the shell punching machine and located at the discharging end of the shell punching mechanism, wherein a pair of guide rods extending vertically upward are fixedly mounted on the base symmetrically in front and back, and a first bearing seat is fixedly mounted on the bottom of each pair of guide rods;

[0010] Transfer rollers are rotatably mounted at the centers of the two first bearing seats at both ends, and the front ends of the transfer rollers extend outward and are fixedly provided with driven wheels;

[0011] A servo motor is located below the base and fixedly connected to the front side of the base through a side plate, wherein a driving wheel is provided at the output end of the servo motor, and the driving wheel is connected to a driven wheel through a belt drive;

[0012] Two auxiliary rollers are movably mounted just above the transfer roller and form a transmission match with the transfer roller. The two auxiliary rollers are coaxially fixedly mounted on the rotating shaft. A second bearing seat is slidably mounted on each of the two pairs of guide rods. Both ends of the rotating shaft are rotatably mounted on the two second bearing seats through bearings. The top of each of the second bearing seats is fixedly connected to the output end of an adjusting cylinder. Each of the adjusting cylinders is fixedly connected to the two top ends of a pair of guide rods on the corresponding side through a mounting plate.

[0013] The shearing mechanism is used to shear the aluminum-plastic film after the punch shell is formed to form an independent aluminum-plastic film battery core package, and the infrared rangefinder is fixedly arranged on the top of the shearing mechanism;

[0014] The PLC controller is electrically connected to the transfer mechanism, the shearing mechanism and the infrared rangefinder respectively. The shearing mechanism and the transfer mechanism are controlled in linkage through the PL controller. The infrared rangefinder senses the protruding signal of the aluminum-plastic film transferred to the shearing mechanism, and feeds it back to the PLC controller for data analysis. Then, the execution instructions are sent respectively to control the shearing mechanism and the transfer mechanism to move or brake, so as to realize the effective transfer and shearing of the aluminum-plastic film after the punch shell is formed.

[0015] Furthermore, the shearing mechanism comprises:

[0016] A lower cutter seat is fixedly arranged on the shell punching machine, and a shearing groove is arranged in the middle of the lower cutter seat;

[0017] An upper cutter seat is arranged directly above the lower cutter seat and the tail end of the upper cutter seat is hinged to the tail end of the lower cutter seat;

[0018] Two shearing cylinders are respectively arranged vertically upward on both sides of the front end of the lower cutter seat, and the piston rod ends of the two shearing cylinders are respectively hinged to the front end of the upper cutter seat;

[0019] A cutter is slidably assembled in the shearing groove and the top end of which is hinged to the upper cutter seat. The front side of the cutter is fitted with the lower cutter seat, and a U-shaped groove opening downward is provided on the lower cutter seat.

[0020] Furthermore, two U-shaped fixing seats with horizontal openings are symmetrically fixed on the top of the lower cutting seat, a positioning rod is fixedly installed between the two U-shaped fixing seats, both ends of the positioning rod are respectively installed on the upper ends of the two U-shaped fixing seats, and the infrared rangefinder is fixedly installed at the center of the positioning rod.

[0021] Furthermore, a slitting mechanism is provided on a side of the transport mechanism away from the shearing mechanism, and the slitting mechanism comprises:

[0022] A material guide pad fixedly connected to the top of the base, wherein two fixing seats are symmetrically arranged at the middle of the material guide pad;

[0023] A cross bar with two ends respectively fixedly connected to the fixing seat;

[0024] A slitting knife is fixedly arranged at the center of the crossbar and has an adjustable angle.

[0025] Furthermore, a pair of L-shaped limiting plates arranged opposite to each other are symmetrically provided on the material guiding pad, and a passage for the aluminum-plastic film to pass through is formed between the two L-shaped limiting plates.

[0026] Furthermore, the infrared rangefinder emits infrared rays to the left and right of the center position just below the cutter, 1-2 mm respectively, to perform two distance measurements, one in succession and one in succession, so as to sense the distance signal of the aluminum-plastic film.

[0027] Compared with the prior art, the advantages of the utility model are:

[0028] The shearing mechanism and the transfer mechanism of the utility model are controlled in linkage through a PL controller, and an infrared rangefinder sensor is additionally provided, so that the shearing mechanism and the transfer mechanism can be controlled to move or brake according to actual conditions. Once deviation occurs, appropriate adjustments can be made by controlling the transfer mechanism, thereby increasing the yield rate. The improved transfer mechanism has better overall stability and less wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a three-dimensional structural diagram of the first generation product.

[0031] Figure 2 It is a three-dimensional structural schematic diagram of the utility model.

[0032] Figure 3 is a schematic structural diagram of the transfer mechanism 200 of the utility model,

[0033] Figure 4 for Figure 3 Exploded diagram of

[0034] Figure 5 is a schematic diagram of the structure of the shearing mechanism 6 and the infrared rangefinder 300 of the utility model,

[0035] Figure 6 is a schematic structural diagram of the lower cutter seat 61,

[0036] Figure 7 is a schematic diagram of the structure of the cutter 65,

[0037] Figure 8 is a schematic structural diagram of a slitting mechanism 400,

[0038] The reference numerals are as follows:

[0039] Workbench 1, center seat 2, feeding mechanism 3, mold clamping mechanism 4, shell punching mechanism 5, horizontal guide rod 100;

[0040] Transfer mechanism 200, base 201, guide rod 202, first bearing seat 203, transfer roller 204, driven wheel 205, servo motor 206, driving wheel 207, auxiliary roller 208, rotating shaft 209, second bearing seat 210, adjusting cylinder 211, mounting plate 212;

[0041] Shearing mechanism 6, lower cutter seat 61, shearing groove 62, upper cutter seat 63, shearing cylinder 64, cutter 65, U-shaped groove 66;

[0042] Infrared rangefinder 300, U-shaped fixing seat 301, positioning rod 302;

[0043] Slitting mechanism 400 , material guiding pad 401 , fixing seat 402 , cross bar 403 , slitting knife 404 , L-shaped limiting plate 405 . DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Please refer to Figures 1 to 8The utility model provides a shearing unit based on a lithium battery polymer battery core aluminum plastic film shell punching machine. The overall structure of the lithium battery polymer battery core aluminum plastic film shell punching machine of the utility model is similar to the first generation product of patent number CN2022206616977, except that the shearing unit is improved, including a transfer mechanism 200, a shearing mechanism 6, an infrared rangefinder 300 and a PLC controller. Other structural parts, including a workbench 1, a center seat 2, a feeding mechanism 3, a clamping mechanism 4, a shell punching mechanism 5, and two-way horizontal guide rods 100, have not changed. Figure 1 and Figure 2 For details, please refer to the specification of patent number CN2022206616977, which will not be elaborated in this application.

[0050] The transfer mechanism 200 of the present invention includes a base 201, a transfer roller 204, a servo motor 206 and two auxiliary rollers 208. Figure 3 and Figure 4 ,in:

[0051] The base 201 is fixedly mounted on the shell punching machine and located at the discharge end of the shell punching mechanism, that is, mounted on the two-way horizontal guide rod 100, located at the discharge end of the mold clamping mechanism 4 and the shell punching mechanism 5. A pair of guide rods 202 extending vertically upward are fixedly arranged on the base 201 in a front-to-back symmetrical manner, and a first bearing seat 203 is fixedly mounted on the bottom of each pair of guide rods 202;

[0052] The two ends of the transfer roller 204 are respectively rotatably assembled in the centers of the two first bearing seats 203, and the rotational assembly relationship is realized through the two bearings. The front end of the transfer roller 204 extends outward and is fixedly provided with a driven wheel 205. The aluminum-plastic film after the punching and forming passes over the transfer roller 204.

[0053] The servo motor 206 is located below the base 201 and is fixedly connected to the front side of the base 201 through a side plate. A driving wheel 207 is provided at the output end of the servo motor 206. The driving wheel 207 is connected to the driven wheel 205 through a belt transmission.

[0054] Two auxiliary rollers 208 are movably mounted just above the transfer roller 204 and form a transmission match with the transfer roller 204. Specifically, the two auxiliary rollers 208 are coaxially fixedly mounted on the rotating shaft 209. A second bearing seat 210 is slidably mounted on each of the two pairs of guide rods 202. Both ends of the rotating shaft 209 are rotatably mounted on the two second bearing seats 210 through bearings. The top of a single second bearing seat 210 is fixedly connected to the output end of an adjusting cylinder 211. The single adjusting cylinder 211 is fixedly connected to the two top ends of a pair of guide rods 202 on the corresponding side through a mounting plate 212. The height of the two auxiliary rollers 208 is adjusted by telescopic adjustment. When the aluminum-plastic film after the shell punching passes through, the two auxiliary rollers 208 press the aluminum-plastic film on the transfer roller 204 to realize the transfer of the aluminum-plastic film, and the two auxiliary rollers 208 should be pressed on the area of ​​the aluminum-plastic film without the shell punching protrusion. The transfer roller 204 rotates actively, and the two auxiliary rollers 208 are driven. When not working, the cylinder 211 is adjusted to retract and lift the two auxiliary rollers 208 so that they cannot form a match with the transfer roller 204. In order to meet the change in the number of shell punching in the width direction, the spacing between the two auxiliary rollers 208 is adjustable, thereby ensuring that the auxiliary rollers 208 are always pressed on the area without protrusions;

[0055] The shearing mechanism 6 is used to shear the aluminum-plastic film after the punch shell is formed to form an independent aluminum-plastic film battery cell package, and its structure is the same as that of the first generation product. Figure 5 , Figure 6 and Figure 7 , including a shearing mechanism 6 including a lower cutter seat 61, an upper cutter seat 63, two shearing cylinders 64 and a cutter 65, wherein:

[0056] The lower cutter seat 61 is arranged at the end of the two-way horizontal guide rod 100, where the end refers to the end of the horizontal guide rod 100 away from the feeding mechanism 3, and a shearing groove 62 is arranged in the middle of the lower cutter seat 61;

[0057] The upper cutter seat 63 is arranged directly above the lower cutter seat 61, and the tail end of the upper cutter seat 63 is hinged to the tail end of the lower cutter seat 61. It should be understood that the tail end refers to the end away from the feeding mechanism 3;

[0058] Two shearing cylinders 64 are respectively arranged vertically upward on both sides of the front end of the lower cutter seat 61, and the piston rod ends of the two shearing cylinders 64 are respectively hinged to the front end of the upper cutter seat 63. It should be understood that the front end refers to the end close to the feeding mechanism 3;

[0059] The cutter 65 is slidably assembled in the shearing groove 62, and the top of the cutter 65 is hinged to the upper cutter seat 63, the front side of the cutter 65 is fitted with the lower cutter seat 61, and the cutter 65 is provided with a U-shaped groove 66 with an opening downward. Only when the cutter 65 is fitted with the lower cutter seat 61 and the cutter 65 slides up and down in the shearing groove 62, can the cutter 65 cooperate with the lower cutter seat 61 to cut the aluminum-plastic film formed by the punch shell. It should be understood that the front side of the cutter 65 refers to the side of the cutter 65 close to the feeding mechanism 3;

[0060] In the initial state, the two sides of the opening of the cutter 65 are slidably assembled in the shearing groove 62. The two sides of the opening of the cutter 65 can play a certain guiding role, and the bottom of the U-shaped groove 66 should be above the lower cutter seat 61, and a certain distance is required, so that the aluminum-plastic film formed by the punching shell can pass between the lower cutter seat 61 and the U-shaped groove 66. Under the action of the two shearing cylinders 64, the cutter 65 is driven to slide up and down in the shearing groove 62, and the cutting of the aluminum-plastic film is achieved through the cooperation of the cutter 65 and the lower cutter seat 61;

[0061] The infrared rangefinder 300 is fixedly arranged on the top of the shearing mechanism 6, that is, fixedly arranged on the top of the lower cutter seat 61. Specifically, Figure 5 , two U-shaped fixing seats 301 with horizontal openings are symmetrically fixed on the top of the lower cutting seat 61, a positioning rod 302 is fixedly installed between the two U-shaped fixing seats 301, and the two ends of the positioning rod 302 are respectively installed on the upper ends of the two U-shaped fixing seats 301, and the infrared rangefinder 300 is fixedly installed at the center of the positioning rod 302;

[0062] The PLC controller is electrically connected to the transfer mechanism 200, the shearing mechanism 6 and the infrared rangefinder 300 respectively. The shearing mechanism 6 and the transfer mechanism 200 are controlled by the PL controller. The infrared rangefinder 300 senses the distance signal of the aluminum-plastic film transferred to the shearing mechanism 6, and feeds it back to the PLC controller for data analysis, and then sends execution instructions to control the shearing mechanism 6 and the transfer mechanism 200 to act or brake, so as to realize the effective transfer and shearing of the aluminum-plastic film after the punching shell is formed. The PLC controller is provided with a control program to analyze the detected data and send execution instructions according to the results. Specifically, the infrared rangefinder 300 emits infrared rays to the left and right of the center position 1-2 mm below the cutter 65 to perform two distance measurements one before and one after. The preset values ​​of the two distance measurements are L1 and L2 respectively. L1 is the distance between the infrared rangefinder 300 and the unpunched part of the aluminum-plastic film, and L2 is the distance between the raised plane of the aluminum-plastic film punching shell. The previous distance measurement value is m1, and the next distance measurement value is m2. The single process satisfies:

[0063] m1 = L1, and m2 = L2, then the transfer mechanism 200 brakes and the shearing mechanism 6 performs shearing;

[0064] m1=L1 and m2=L1, then the transfer mechanism 200 rotates forward and the shearing mechanism 6 brakes;

[0065] If L1<m1<L2, the transfer mechanism 200 will reverse and adjust itself;

[0066] m1 = L2 and m2 = L2, the transfer mechanism 200 and the shearing mechanism 6 are both braked and manually adjusted;

[0067] If the distance measurement error is within 0.5 mm, it can be considered equal.

[0068] Note that the infrared rangefinder 300 should measure distance according to the natural frequency, and the frequency of distance measurement is set according to actual needs. The control program in the PLC controller is programmed according to its own needs without limitation. The execution mode is agreed upon according to actual needs.

[0069] In addition, the transfer mechanism 200 is a pre-process of the shearing mechanism 6. During the transfer process, the workload of post-processing can be reduced by adding a slitting process. Specifically, a slitting mechanism 400 is provided on the side of the transfer mechanism 200 away from the shearing mechanism 6. Figure 8 The slitting mechanism 400 includes a material guide pad 401, a crossbar 403 and a slitting knife 404, wherein:

[0070] The material guide pad 401 is fixedly connected to the top of the base 201. Two fixing seats 402 are symmetrically arranged in the middle of the material guide pad 401. The aluminum-plastic film passes between the two fixing seats 402.

[0071] The two ends of the crossbar 403 are respectively fixedly connected to the fixing seat 402, and the slitting knife 404 is fixedly set at the center of the crossbar 403 and the angle is adjustable. The tip of the slitting knife 404 is adjusted to contact with the guide pad 401 to slit the aluminum-plastic film passing through. Note that it is similar to the position of the auxiliary roller 208, and the bulge cannot be cut. It is located between two bulges, and there is no area for shell forming to be slit;

[0072] A pair of L-shaped limiting plates 405 arranged opposite to each other are symmetrically provided on the material guiding pad 401 , and a passage for the aluminum-plastic film to pass through is formed between the two L-shaped limiting plates 405 .

[0073] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A shearing unit based on a lithium battery polymer cell aluminum plastic film punching machine, characterized in that: It comprises a transfer mechanism (200), a shearing mechanism (6), an infrared rangefinder (300) and a PLC controller; The transfer mechanism (200) comprises: A base (201) is fixedly mounted on the shell punching machine and is located at the discharge end of the shell punching mechanism, wherein a pair of guide rods (202) extending vertically upward are fixedly mounted on the base (201) symmetrically in front and back, and a first bearing seat (203) is fixedly mounted on the bottom of each pair of guide rods (202); Transfer rollers (204) are rotatably mounted at the centers of the two first bearing seats (203) at both ends, and the front ends of the transfer rollers (204) extend outward and are fixedly provided with driven wheels (205); A servo motor (206) is located below the base (201) and fixedly connected to the front side of the base (201) via a side plate, wherein a driving wheel (207) is provided at the output end of the servo motor (206), and the driving wheel (207) is connected to the driven wheel (205) via a belt drive; Two auxiliary rollers (208) are movably mounted just above the transfer roller (204) and form a transmission cooperation with the transfer roller (204); the two auxiliary rollers (208) are coaxially fixedly mounted on the rotating shaft (209); a second bearing seat (210) is slidably mounted on each of the two pairs of guide rods (202); both ends of the rotating shaft (209) are rotatably mounted on the two second bearing seats (210) via bearings; the top of each of the second bearing seats (210) is fixedly connected to the output end of an adjusting cylinder (211); each of the adjusting cylinders (211) is fixedly connected to the two top ends of a pair of guide rods (202) on the corresponding side via a mounting plate (212); The shearing mechanism (6) is used to shear the aluminum-plastic film after the punch shell is formed to form an independent aluminum-plastic film battery core package, and the infrared rangefinder (300) is fixedly arranged on the top of the shearing mechanism (6); The PLC controller is electrically connected to the transfer mechanism (200), the shearing mechanism (6) and the infrared rangefinder (300) respectively. The shearing mechanism (6) and the transfer mechanism (200) are controlled in linkage via the PLC controller. The infrared rangefinder (300) senses a convex signal of the aluminum-plastic film transferred to the shearing mechanism (6), feeds it back to the PLC controller for data analysis, and then sends execution instructions to control the shearing mechanism (6) and the transfer mechanism (200) to move or brake respectively, thereby realizing effective transfer and shearing of the aluminum-plastic film after the punch shell is formed.

2. The shearing unit based on the aluminum-plastic film punching machine for lithium battery polymer cells according to claim 1 is characterized in that: The shearing mechanism (6) comprises: A lower cutter seat (61) is fixedly arranged on the shell punching machine, wherein a shearing groove (62) is provided in the middle of the lower cutter seat (61); An upper cutter seat (63) is arranged directly above the lower cutter seat (61) and the rear end of the upper cutter seat (63) is hinged to the rear end of the lower cutter seat (61); Two shearing cylinders (64) are respectively arranged vertically upward on both sides of the front end of the lower cutter seat (61), and the piston rod ends of the two shearing cylinders (64) are respectively hinged to the front end of the upper cutter seat (63); A cutter (65) is slidably mounted in the shearing groove (62) and has its top end hinged to the upper cutter seat (63). The front side of the cutter (65) is in contact with the lower cutter seat (61) and is provided with a U-shaped groove (66) opening downward.

3. The shearing unit based on the lithium battery polymer battery core aluminum plastic film punching machine according to claim 2 is characterized in that: Two U-shaped fixing seats (301) with horizontal openings are symmetrically fixed on the top of the lower cutting seat (61), a positioning rod (302) is fixedly installed between the two U-shaped fixing seats (301), two ends of the positioning rod (302) are respectively installed on the upper ends of the two U-shaped fixing seats (301), and the infrared rangefinder (300) is fixedly installed at the center of the positioning rod (302).

4. The shearing unit based on the aluminum-plastic film punching machine for lithium battery polymer cells according to claim 1 is characterized in that: A slitting mechanism (400) is provided on a side of the transfer mechanism (200) away from the shearing mechanism (6), and the slitting mechanism (400) comprises: A material guide pad (401) fixedly connected to the top of the base (201), wherein two fixing seats (402) are symmetrically arranged in the middle of the material guide pad (401); A cross bar (403) with two ends respectively fixedly connected to the fixing seat (402); A slitting knife (404) is fixedly arranged at the center of the crossbar (403) and has an adjustable angle.

5. The shearing unit based on the aluminum-plastic film punching machine for lithium battery polymer cells according to claim 4 is characterized in that: The material guiding pad (401) is also symmetrically provided with a pair of L-shaped limiting plates (405) arranged opposite to each other, and a passage for the aluminum-plastic film to pass through is formed between the two L-shaped limiting plates (405).

6. The shearing unit based on the aluminum-plastic film punching machine for lithium battery polymer cells according to claim 1 is characterized in that: The infrared rangefinder (300) emits infrared rays to the center position just below the cutter (65) at 1-2 mm to the left and right to perform two distance measurements, one in succession and one in succession, to sense the distance signal of the aluminum-plastic film.

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