Insulating silica gel foam blanking device for battery

Abstract

The invention belongs to the technical field of silica gel foam processing, and particularly relates to an insulating silica gel foam blanking device for batteries, which comprises a blanking machine, the blanking machine comprises a workbench, a lower pressing plate is slidably connected above the workbench, a cutting knife is fixedly arranged at the bottom of the lower pressing plate, and the insulating silica gel foam is cut by pre-compressing on a cutting path of the cutting knife. According to the cutting device, the springback speed is limited after cutting is completed, the phenomena of edge size shrinkage and local protrusion caused by springback can be reduced, the size precision of a cutting path is remarkably improved, the cutting edge is smoother, and the overall cutting quality is improved; according to the silica gel foam cleaning device, impurities on the moving path of the pressing block can be cleaned, the state of shutdown caused by clamping stagnation of the pressing block in the moving process is avoided, meanwhile, the situation that the surface of silica gel foam is scratched by the impurities can be avoided, and the production continuity of the device can be further improved under the condition that the appearance of the silica gel foam is protected.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of silica gel foam processing, and in particular to a punching device for insulating silica gel foam for batteries. BACKGROUND

[0002] The punching device for insulating silica gel foam for batteries is an automatic processing equipment specially designed for the battery manufacturing field. Through the coordinated action of a highly integrated mechanical structure and a precision control system, combined with advanced technologies such as cylinder driving and customized die punching, the device can accurately and efficiently cut insulating silica gel foam material into shapes and sizes that meet the specific needs of battery pack cells / modular spaces, effectively meeting the structural and functional requirements of batteries in terms of heat insulation, buffer protection, and sealing and dust prevention, and is particularly suitable for the stringent standards of material thickness precision, processing efficiency, and product consistency in the field of new energy vehicle batteries.

[0003] In the prior art, through the cooperation of the rack, roller group, guide rail, and cylinder pressure structure, automatic feeding, accurate positioning and fixing of the insulating silica gel foam material are realized, and then the die plate (which can be configured with a cross-cutting knife and a longitudinal cutting knife) driven by the punching cylinder completes high-precision cutting, finally outputting customized foam pieces that meet the structural requirements of battery pack cells, modular spaces, heat insulation, buffer, and sealing, and are particularly suitable for the stringent requirements of material thickness consistency, processing efficiency, and product consistency in the field of new energy vehicle batteries.

[0004] The above-mentioned scheme still has some problems in actual application. Although the existing device can complete the punching work of the silica gel foam, due to the high elasticity and uneven internal stress characteristics of the silica gel foam, when the cutting path of the foam is not pre-compressed, the local pressure applied by the cutting tool during cutting will cause instantaneous non-uniform deformation of the material. Due to the differences in density, vulcanization degree, or stress distribution, different regions will accumulate different degrees of compression and elastic potential energy. After cutting is completed, the accumulated elastic potential energy is released in the form of rebound, causing the edge size to shrink or locally protrude, and the rebound rate and amplitude of different regions are inconsistent, ultimately leading to overall size fluctuation and deformation out of control. The double effects of material elasticity and constraint loss during cutting directly cause the deviation of cutting size.

[0005] Therefore, the present application provides a punching device for insulating silica gel foam for batteries. SUMMARY

[0006] In order to make up for the shortcomings of the prior art and solve at least one technical problem raised in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: a kind of insulating silica gel foam blanking device for battery, including blanking machine, the blanking machine includes workbench, the lower pressing plate is slidably connected above the workbench, the cutting knife is fixedly arranged at the bottom of the lower pressing plate, the transmission belt is fixedly arranged at the top of the workbench, the lower pressing limiting mechanism is arranged above the blanking machine; The lower pressing limiting mechanism includes a pressing block slidably arranged above the transmission belt, which is used to pre-press the insulating silica gel foam on the movement path of the cutting knife.

[0008] Preferably, the lower pressing limiting mechanism includes a telescopic cylinder, the telescopic cylinder is internally provided with a cavity, the first spring is fixedly connected to the top of the cavity of the telescopic cylinder, the telescopic column is slidably connected inside the first spring, and the telescopic column is fixedly connected to the bottom of the pressing plate.

[0009] The side of the pressing plate is provided with an extension plate, the side of the extension plate of the pressing plate is fixedly connected with the second spring, one end of the second spring is fixedly connected with the pressing block.

[0010] Preferably, a tool path groove adapted to the cutting path of the cutting knife is formed in the middle of the pressing plate, and the pressing block is slidably connected in the tool path groove formed in the middle of the pressing plate. A cutting hole is formed in the middle of the pressing block, the side of the pressing block close to the second spring is of an inclined structure, for reducing the stress release speed after the silica gel foam is cut, and the side of the pressing block away from the second spring is of a circular arc structure, for better pressing the silica gel foam on the movement path of the cutting knife during the movement of the pressing block.

[0011] Preferably, the telescopic cylinder and the telescopic column are symmetrically distributed about the central axis of the pressing plate, and two telescopic cylinders are internally provided with cavities. The top of the inner cavity of the telescopic cylinder is fixedly connected with a fixed column, the inside of the telescopic column is a cavity structure, the fixed column is slidably connected in the inside of the telescopic column, the bottom of the fixed column is fixedly connected with a lower pressing disc, and the bottom of the telescopic column is provided with an air outlet hole.

[0012] Preferably, an air duct groove is formed in the inside of the side of the pressing plate close to the fixed column, the air duct groove is communicated with the air outlet hole, and the air duct groove is of a flat structure. A dirt collecting groove is formed in the bottom of the other side of the pressing plate, and the dirt collecting groove is used to accommodate impurities blown by the air duct groove.

[0013] Preferably, except the pressing plate, the fixed column, the lower pressing disc, the air outlet hole, the air duct groove and the dirt collecting groove, the remaining components of the lower pressing limiting mechanism are symmetrically distributed about the central axis of the pressing plate, the air duct groove is symmetrically distributed with the air duct groove about the pressing plate, and the inside of the telescopic cylinder arranged above the dirt collecting groove is not provided with a fixed column.

[0014] Preferably, the lower pressing limiting mechanism side is provided with a reciprocating calibration mechanism for calibration work, the reciprocating calibration mechanism comprises a micro motor fixedly arranged on the side of the pressing plate extension plate; The micro motor output shaft penetrates through the inside of the side of the pressing plate extension plate and is rotationally connected, the micro motor output shaft is fixedly connected with a rotating screw, and the side of the pressing plate extension plate is provided with a protrusion.

[0015] Preferably, the rotating screw outer ring surface is threadedly connected with a first displacement block, the side of the first displacement block is provided with a groove, the size of the groove is matched with the size of the protrusion, the bottom of the first displacement block is fixedly connected with a third spring, the other end of the third spring is fixedly connected with a second displacement block, the second displacement block is slidingly connected on the outer ring surface of the first displacement block, and the bottom of the second displacement block is rotationally connected with a roller.

[0016] Preferably, the first displacement block is slidingly connected on the protrusion arranged on the side of the pressing plate extension plate, the micro motor can drive the first displacement block, the third spring, the second displacement block and the roller to move linearly along the guide of the protrusion after being started, and the arrangement of the roller facilitates the movement on the top of the transmission belt on the basis of pushing the silica gel foam when the roller contacts the top of the transmission belt.

[0017] The beneficial effects of the present application are as follows: 1. The insulating silica gel foam blanking device for the battery, when cutting is completed, the side of the pressing block close to the second spring is of an inclined structure, so that the area after cutting does not rebound immediately, but rebounds gradually along the inclined surface of the pressing block, the pre-compression on the cutting path of the cutting knife and the limitation of the rebound speed after cutting can reduce the edge size shrinkage and local bulging phenomenon caused by rebound, significantly improve the size accuracy of the cutting path, make the cutting edge more smooth, and improve the overall cutting quality.

[0018] 2. The insulating silica gel foam blanking device for the battery, the bottom of one side of the pressing plate is provided with an air duct groove, and the air duct groove is connected with the cavity of the telescopic column, so that the air can be sprayed into the cutting groove arranged in the inside of the pressing plate through the air duct groove during the downward movement of the pressing disc, and the impurities can be collected in the dirt collecting groove on the other side of the pressing plate, thereby the impurities on the moving path of the pressing block can be cleaned, the state that the pressing block is stuck during movement to cause shutdown can be avoided, and the situation that the impurities scratch the surface of the silica gel foam can also be avoided, thereby the appearance of the silica gel foam can be protected, and the continuity of device production can be further improved.

[0019] 3. The insulating silica gel foam blanking device for the battery according to the present application, since the upper area of the side of the second displacement block overlaps with the lower area of the side of the pressing plate in the initial state, when the side of the second displacement block abuts against the side of the pressing plate, the material is completely pushed to the position right below the pressing plate, and the initial side of the silica gel foam to be cut is located on the side of the cutting hole away from the second spring, when the reciprocating calibration mechanism completes the work, the lower pressing plate continues to move downwards, at this time, the spring fixed in the second displacement block is compressed, the setting of the reciprocating calibration mechanism can improve the accuracy of the initial cutting, avoid the situation that part of the cutting path is cut without being pre-compressed, and further improve the overall cutting quality. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below in conjunction with the drawings.

[0021] Figure 1 It is the overall structure schematic diagram of a preferred embodiment of the present application. Figure 2 It is the position structure schematic diagram of the blanking machine and the lower pressing limiting mechanism of the present application. Figure 3 It is the three-dimensional structure schematic diagram of the lower pressing limiting mechanism of the present application. Figure 4 It is the internal structure schematic diagram of the telescopic cylinder of the present application. Figure 5 It is the lower pressing limiting mechanism of the present application. Figure 6 It is the position structure schematic diagram of the lower pressing limiting mechanism and the reciprocating calibration mechanism of the present application. Figure 7 It is the three-dimensional structure schematic diagram of the reciprocating calibration mechanism of the present application. Figure 8 It is the internal structure schematic diagram of the second displacement block of the present application.

[0022] In the drawings: 1, blanking machine; 101, workbench; 102, lower pressing plate; 103, cutting knife; 104, transmission belt; 2, lower pressing limiting mechanism; 201, telescopic cylinder; 202, first spring; 203, telescopic column; 204, pressing plate; 205, second spring; 206, pressing block; 207, cutting hole; 208, fixed column; 209, lower pressing disc; 210, air outlet hole; 211, air duct groove; 212, sewage collecting tank; 3, reciprocating calibration mechanism; 301, micro motor; 302, rotating screw; 303, first displacement block; 304, third spring; 305, second displacement block; 306, roller. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments. Embodiments

[0024] As shown in Figures 1 to 8 The insulating silica gel foam blanking device for battery according to the embodiment of the present application comprises a blanking machine 1, wherein the blanking machine 1 comprises a workbench 101, a lower pressing plate 102 is slidably connected above the workbench 101, a cutting knife 103 is fixedly arranged at the bottom of the lower pressing plate 102, a transmission belt 104 is fixedly arranged at the top of the workbench 101, and a lower pressing limiting mechanism 2 is arranged above the blanking machine 1. The lower pressing limiting mechanism 2 comprises a pressing block 206 which is slidably arranged above the transmission belt 104, and the pressing block 206 is used for pre-pressing the insulating silica gel foam on the movement path of the cutting knife 103.

[0025] Specifically, although the existing device can complete the blanking work of the silica gel foam, due to the characteristics of high elasticity and uneven internal stress of the silica gel foam, when the cutting path of the foam is not pre-compressed, the local pressure directly applied by the cutting tool during the cutting process will cause instantaneous non-uniform deformation of the material, and due to the differences in density, vulcanization degree or stress distribution of each region, different degrees of compression and elastic potential energy accumulation are generated, after the cutting is completed, the accumulated elastic potential energy is released in the form of rebound when the restraint force is suddenly released, resulting in edge size shrinkage or local protrusion, and the rebound rate and amplitude of different regions are inconsistent, ultimately leading to overall size fluctuation and deformation out of control, the double effects of the material elastic properties and the lack of restraint during cutting directly cause the deviation of the cutting size; Therefore, the present application solves this problem by setting a structure, when the silica gel foam needs to be punched, the bulk foam is placed on the transmission belt 104 on the upper part of the workbench 101, at this time the transmission belt 104 is started, at this time the transmission belt 104 will drive the silica gel foam on the top to move synchronously, when the cutting area of the silica gel foam needs to be cut and the cutting knife 103 is in the same vertical plane, the lower pressing plate 102 is started, at this time the lower pressing plate 102 will move downward under the drive of the hydraulic cylinder, when the cutting knife 103 moves and the silica gel foam is in the same plane, the external electric guide rail is started, and the cutting knife 103 will move linearly under the drive of the electric guide rail and cut the silica gel foam at the same time, but due to the high elasticity and uneven internal stress of the silica gel foam, when the cutting path on the foam is not pre-compressed, the local pressure applied by the cutting tool during cutting will cause instantaneous non-uniform deformation of the material, due to the differences in density, vulcanization degree or stress distribution, different areas will accumulate different degrees of compression and elastic potential energy, after cutting is completed, the accumulated elastic potential energy is released in the form of rebound, causing the edge size to shrink or locally protrude, and the rebound rate and amplitude of different areas are inconsistent, ultimately leading to overall size fluctuation and deformation out of control, this double effect of material elasticity and lack of constraint during cutting directly causes the cutting size deviation, at this time the movement of the pressure applying block 206 can apply pressure to the silica gel foam on the cutting path, so that the material resistance distribution of the cutting knife 103 during cutting is more uniform, the cutting path is more stable, thereby improving the size accuracy and shape accuracy of the cutting edge. Embodiment

[0026] As shown in Figures 1 to 8 , comparative example one, another embodiment of the present application is: As shown in Figure 3 , the lower pressing limiting mechanism 2 of the present embodiment comprises a telescopic cylinder 201, the telescopic cylinder 201 is internally provided with a cavity, the top of the cavity of the telescopic cylinder 201 is fixedly connected with a first spring 202, the inside of the first spring 202 is slidably connected with a telescopic column 203, and the bottom of the telescopic column 203 is fixedly connected with a pressure applying plate 204.

[0027] As shown in Figure 4 and Figure 5 , the pressure applying plate 204 of the present embodiment is provided with an extension plate on the side, the second spring 205 is fixedly connected with the extension plate on the side of the pressure applying plate 204, and one end of the second spring 205 is fixedly connected with a pressure applying block 206.

[0028] As shown in Figure 5 , the pressure applying plate 204 of the present embodiment is provided with a tool path groove adapted to the cutting path of the cutting knife 103 in the middle, and the pressure applying block 206 is slidably connected in the tool path groove in the middle of the pressure applying plate 204. The pressure block 206 has a cutting hole 207 through its center. The side of the pressure block 206 near the second spring 205 is obliquely shaped to reduce the speed at which stress is released after the silicone foam is cut. The side of the pressure block 206 away from the second spring 205 is arc-shaped to better apply pressure to the silicone foam on the movement path of the cutting blade 103 during the movement of the pressure block 206.

[0029] Specifically, when the silicone foam is driven by the transmission belt 104 to the area directly below the pressure plate 204, the lower pressure plate 102 will move downward under the drive of the hydraulic cylinder, and simultaneously drive the lower pressure limit mechanism 2 to move synchronously. When the bottom of the pressure plate 204 contacts the top of the silicone foam, the hydraulic cylinder will continue to move downward, and at the same time, the external electric guide rail will be activated. At this time, the cutting blade 103 will move under the drive of the electric guide rail. As the lower pressure plate 102 moves downward, the telescopic cylinder 201 fixed to the bottom of the lower pressure plate 102 also moves downward synchronously. When the bottom of the pressure plate 204 contacts the silicone foam, the first spring 202 fixed inside the telescopic cylinder 201 will be compressed by external force, and the telescopic column 203 sliding inside the telescopic cylinder 201 will also slide. At this time, the cutting blade 103 will move to the same vertical plane as the cutting hole 207 under the drive of the electric guide rail, and the lower pressure plate 102 will... Driven by the hydraulic cylinder, the cutting blade 103 continues to press down. When the cutting blade 103 moves into the cutting hole 207, the pressure plate 102 stops moving down. At this time, the electric guide rail is started to drive the cutting blade 103 to move in a straight line. Since the upper part of the cutting blade 103 is in close contact with the side of the cutting hole 207 inside the pressure block 206, and the pressure block 206 slides in the cutting groove that is opened through the pressure plate 204, the cutting blade 103 will push the pressure block 206 to move synchronously when the electric guide rail is started. When the pressure block 206 moves, because the side of the pressure block 206 away from the second spring 205 has an arc-shaped structure, and the silicone foam becomes relatively thinner under the compression of the pressure plate 204, the pressure block 206 can press the silicone foam to the bottom when it moves. At the same time, since the bottom of the pressure plate 204 and the pressure block 206 are on the same horizontal plane, a pre-compression effect on the silicone foam can be achieved. When the top of the silicone foam moves to the side of the cutting hole 207 away from the second spring 205, because the cutting blade 103 is located inside the cutting hole 207, and the side of the cutting blade 103 is parallel to the side of the cutting hole 207... Since the surfaces are in close contact, the cutter 103 can cut the compressed silicone foam when it moves. After the cut is completed, because the side of the pressure block 206 near the second spring 205 is oblique, the cut area will not immediately spring back, but will gradually spring back along the oblique surface of the pressure block 206. By pre-compressing the cutting path of the cutter 103 and limiting the speed of springback after the cut, the edge shrinkage and local bulging caused by springback can be reduced, significantly improving the dimensional accuracy of the cutting path, making the cutting edge smoother and improving the overall cutting quality.

[0030] like Figure 4 As shown, in this embodiment, there are two telescopic cylinders 201 and telescopic columns 203 symmetrically distributed about the central axis of the pressure plate 204, and one of the telescopic cylinders 201 has an internal cavity. A fixed column 208 is fixedly connected to the top of the inner cavity of the telescopic cylinder 201. The telescopic column 203 has a hollow structure inside. The fixed column 208 is slidably connected inside the telescopic column 203. A pressing disc 209 is fixedly connected to the bottom of the fixed column 208. An exhaust hole 210 is opened through the bottom of the telescopic column 203.

[0031] like Figure 5 As shown, in this embodiment, the pressure plate 204 near the fixed column 208 has an internal air duct groove 211, which is connected to the exhaust hole 210. The air duct groove 211 has a flat structure. A dirt collection trough 212 is provided on the bottom of the other side of the pressure plate 204. The dirt collection trough 212 is used to collect impurities blown in by the air duct 211.

[0032] Specifically, when the bottom of the pressure plate 204 contacts the silicone foam, the telescopic cylinder 201, driven by the lower pressure plate 102, will continue to move downward along the guide of the telescopic column 203. Since the fixed column 208 is fixed to the top of the inner cavity of the telescopic cylinder 201, the fixed column 208 will also continue to move downward as the telescopic cylinder 201 moves downward. Simultaneously, since the fixed column 208 slides through the telescopic column 203 and is fixedly connected to the lower pressure disc 209, the telescopic cylinder 201, while moving downward, synchronously drives the lower pressure disc 209 to move downward along the guide inside the telescopic column 203. Because the telescopic column 203 is hollow, when the lower pressure disc 209 moves downward, the telescopic column 203... The air inside the cavity is discharged through the exhaust hole 210. Since the bottom of one side of the pressure plate 204 is provided with an air duct groove 211, and the air duct groove 211 is connected to the cavity of the telescopic column 203, the gas can be sprayed into the cutting groove opened inside the pressure plate 204 through the air duct groove 211 during the downward movement of the pressure disc 209, and the impurities are collected in the dirt collection groove 212 on the other side of the pressure plate 204. This can clean the impurities on the moving path of the pressure block 206, avoid the pressure block 206 from getting stuck during the movement and causing the machine to stop, and also prevent the impurities from scratching the surface of the silicone foam. This can further improve the continuity of the device production while protecting the appearance of the silicone foam.

[0033] like Figure 7 As shown, the side of the pressure limiting mechanism 2 in this embodiment is provided with a reciprocating calibration mechanism 3 for calibration work. The reciprocating calibration mechanism 3 includes a micro motor 301, which is fixedly connected to the side of the extension plate of the pressure plate 204. The output shaft of the micro motor 301 is rotatably connected to the inside of the side of the extension plate of the pressure plate 204. The output shaft of the micro motor 301 is fixedly connected to a rotating screw 302. A protrusion is provided on the side of the extension plate of the pressure plate 204.

[0034] like Figure 7 and Figure 8 As shown, in this embodiment, the outer ring surface of the rotating screw 302 is threadedly connected to a first displacement block 303. The side of the first displacement block 303 is provided with a groove, and the size of the groove is adapted to the size of the protrusion. A third spring 304 is fixedly connected to the bottom of the first displacement block 303. The other end of the third spring 304 is fixedly connected to a second displacement block 305. The second displacement block 305 is slidably connected to the outer ring surface of the first displacement block 303. A roller 306 is rotatably connected to the bottom of the second displacement block 305.

[0035] Specifically, before the bottom surface of the pressure plate 204 contacts the top of the silicone foam, the roller 306 in the reciprocating calibration mechanism 3 will first contact the surface of the support frame in the transmission belt 104. Since the support frame of the transmission belt 104 is flush with the upper surface of the conveyor belt, there will be no height difference when the first displacement block 303 moves. When the material is conveyed to the area below the pressure plate 204, the lower pressure plate 102 will stop moving downwards and start the micro motor 301. At this time, the output shaft of the micro motor 301 will drive the rotating screw 302 fixed to it to rotate, and at the same time drive the first displacement block 303, which is threaded to its outer ring surface, to move synchronously. Since the side of the first displacement block 303 is provided with a groove that matches the protrusion on the side of the extension block of the pressure plate 204, the rotating screw 302 can drive the first displacement block 303 to move linearly when it rotates. Simultaneously, the material placed on the conveyor belt surface of the transmission belt 104 is pushed by the second displacement block 305 to move synchronously. Since the upper part of the side of the second displacement block 305 overlaps with the lower part of the side of the pressure plate 204 in the initial state, when the side of the second displacement block 305 abuts against the side of the pressure plate 204, the material will be completely pushed to the bottom of the pressure plate 204, and the initial side of the silicone foam to be cut will be on the side of the cutting hole 207 away from the second spring 205. After the reciprocating calibration mechanism 3 completes its work, the lower pressure plate 102 will continue to move downward. At this time, the spring fixed inside the second displacement block 305 will be compressed. The setting of the reciprocating calibration mechanism 3 can improve the initial cutting accuracy and avoid the situation where some areas on the cutting path are not pre-compressed before cutting, thereby further improving the overall cutting quality.

[0036] Working principle: When the silicone foam is driven by the transmission belt 104 to the bottom of the pressure plate 204, the lower pressure plate 102 will move downward under the drive of the hydraulic cylinder, and at the same time drive the lower pressure limit mechanism 2 to move synchronously. When the bottom of the pressure plate 204 contacts the top of the silicone foam, the hydraulic cylinder will continue to move downward, and at the same time activate the external electric guide rail. At this time, the cutting blade 103 will move under the drive of the electric guide rail. As the lower pressure plate 102 moves downward, the telescopic cylinder 201 fixed to the bottom of the lower pressure plate 102 also moves downward synchronously. When the bottom of the pressure plate 204 contacts the silicone foam, the first spring 202 fixed inside the telescopic cylinder 201 will be compressed by external force, and the telescopic column 203 sliding inside the telescopic cylinder 201 will also slide. At this time, the cutting blade 103 will move to the same vertical plane as the cutting hole 207 under the drive of the electric guide rail, and the lower pressure plate 102 will... Driven by the hydraulic cylinder, the cutting blade 103 continues to press down. When the cutting blade 103 moves into the cutting hole 207, the pressure plate 102 stops moving down. At this time, the electric guide rail is started to drive the cutting blade 103 to move in a straight line. Since the upper part of the cutting blade 103 is in close contact with the side of the cutting hole 207 inside the pressure block 206, and the pressure block 206 slides in the cutting groove that is opened through the pressure plate 204, the cutting blade 103 will push the pressure block 206 to move synchronously when the electric guide rail is started. When the pressure block 206 moves, because the side of the pressure block 206 away from the second spring 205 has an arc-shaped structure, and the silicone foam becomes relatively thinner under the compression of the pressure plate 204, the pressure block 206 can press the silicone foam to the bottom when it moves. At the same time, since the bottom of the pressure plate 204 and the pressure block 206 are on the same horizontal plane, a pre-compression effect on the silicone foam can be achieved. When the top of the silicone foam moves to the side of the cutting hole 207 away from the second spring 205, because the cutting blade 103 is located inside the cutting hole 207, and the side of the cutting blade 103 is parallel to the side of the cutting hole 207... Since the surfaces are in close contact, the cutter 103 can cut the compressed silicone foam when it moves. After the cut is completed, because the side of the pressure block 206 near the second spring 205 is oblique, the cut area will not immediately spring back, but will gradually spring back along the oblique surface of the pressure block 206. By pre-compressing the cutting path of the cutter 103 and limiting the speed of springback after the cut, the edge shrinkage and local bulging caused by springback can be reduced, significantly improving the dimensional accuracy of the cutting path, making the cutting edge smoother and improving the overall cutting quality.

[0037] When the bottom of the pressure plate 204 contacts the silicone foam, the telescopic cylinder 201, driven by the lower pressure plate 102, will continue to move downward along the guide of the telescopic column 203. Since the fixed column 208 is fixed to the top of the inner cavity of the telescopic cylinder 201, the fixed column 208 will also continue to move downward as the telescopic cylinder 201 moves downward. Simultaneously, since the fixed column 208 slides through the telescopic column 203 and is fixedly connected to the lower pressure disc 209, the lower pressure disc 209 will move downward along the guide inside the telescopic column 203 as the telescopic cylinder 201 moves downward. Because the telescopic column 203 is hollow, the contents of the hollow section of the telescopic column 203 will increase as the lower pressure disc 209 moves downward. The air is discharged through the exhaust hole 210. Since the bottom of one side of the pressure plate 204 is provided with an air duct groove 211, and the air duct groove 211 is connected to the cavity of the telescopic column 203, the air can be sprayed into the cutting groove opened inside the pressure plate 204 through the air duct groove 211 during the downward movement of the pressure disc 209, and the impurities are collected in the dirt collection groove 212 on the other side of the pressure plate 204. This can clean the impurities on the moving path of the pressure block 206, avoid the pressure block 206 from being stuck during the movement and causing the machine to stop, and also prevent the impurities from scratching the surface of the silicone foam. This can further improve the continuity of the device production while protecting the appearance of the silicone foam.

[0038] Before the bottom surface of the pressure plate 204 contacts the top of the silicone foam, the roller 306 in the reciprocating calibration mechanism 3 will first contact the surface of the support frame in the transmission belt 104. Since the support frame of the transmission belt 104 is flush with the upper surface of the conveyor belt, there is no height difference when the first displacement block 303 moves. When the material is conveyed below the pressure plate 204, the lower pressure plate 102 will stop moving downwards and simultaneously start the micro motor 301. At this time, the output shaft of the micro motor 301 will drive the rotating screw 302 fixed to it to rotate, and simultaneously drive the first displacement block 303, which is threaded to its outer ring surface, to move synchronously. Because the side of the first displacement block 303 is provided with a groove that matches the protrusion on the side of the extension block of the pressure plate 204, the rotating screw 302 can drive the first displacement block 303 to move linearly when it rotates. While moving, the material placed on the surface of the conveyor belt 104 is pushed synchronously by the second displacement block 305. Since the upper part of the side of the second displacement block 305 overlaps with the lower part of the side of the pressure plate 204 in the initial state, when the side of the second displacement block 305 abuts against the side of the pressure plate 204, the material will be completely pushed to the bottom of the pressure plate 204, and the initial side of the silicone foam to be cut will be on the side of the cutting hole 207 away from the second spring 205. After the reciprocating calibration mechanism 3 completes its work, the lower pressure plate 102 will continue to move downward. At this time, the spring fixed inside the second displacement block 305 will be compressed. The setting of the reciprocating calibration mechanism 3 can improve the initial cutting accuracy and avoid the situation where some areas on the cutting path are not pre-compressed before cutting, thereby further improving the overall cutting quality.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A die-cutting device for insulating silicone foam for batteries, comprising a die-cutting machine (1), the die-cutting machine (1) comprising a worktable (101), a lower pressure plate (102) slidably connected above the worktable (101), a cutting blade (103) fixedly disposed at the bottom of the lower pressure plate (102), and a transmission belt (104) fixedly disposed at the top of the worktable (101), characterized in that; A pressure limiting mechanism (2) is provided above the punching machine (1); The pressure limiting mechanism (2) includes a pressure block (206) that is slidably disposed above the transmission belt (104). The pressure block (206) is used to pre-compress the insulating silicone foam on the movement path of the cutting blade (103).

2. The insulating silicone foam punching device for batteries according to claim 1, characterized in that: The pressure limiting mechanism (2) includes a telescopic cylinder (201), the telescopic cylinder (201) has a cavity inside, a first spring (202) is fixedly connected to the top of the cavity of the telescopic cylinder (201), a telescopic column (203) is slidably connected inside the first spring (202), and a pressure plate (204) is fixedly connected to the bottom of the telescopic column (203).

3. The insulating silicone foam punching device for batteries according to claim 2, characterized in that: An extension plate is provided on the side of the pressure plate (204), and a second spring (205) is fixedly connected to the side of the extension plate of the pressure plate (204). A pressure block (206) is fixedly connected to one end of the second spring (205).

4. The insulating silicone foam punching device for batteries according to claim 3, characterized in that: The pressure plate (204) has a cutting groove in the middle that is adapted to the cutting path of the cutting blade (103), and the pressure block (206) is slidably connected in the cutting groove in the middle of the pressure plate (204). The pressure block (206) has a cutting hole (207) through the middle. The side of the pressure block (206) near the second spring (205) is obliquely shaped to reduce the speed of stress release after the silicone foam is cut. The side of the pressure block (206) away from the second spring (205) is arc-shaped to better apply pressure to the silicone foam on the movement path of the cutting blade (103) during the movement of the pressure block (206).

5. The insulating silicone foam punching device for batteries according to claim 4, characterized in that: There are two telescopic cylinders (201) and telescopic columns (203) symmetrically distributed about the central axis of the pressure plate (204), and one of the telescopic cylinders (201) has an inner cavity inside; The top of the inner cavity of the telescopic cylinder (201) is fixedly connected to a fixed column (208). The telescopic column (203) has a hollow structure inside. The fixed column (208) is slidably connected inside the telescopic column (203). The bottom of the fixed column (208) is fixedly connected to a pressing disc (209). The bottom of the telescopic column (203) is provided with an exhaust hole (210).

6. The insulating silicone foam punching device for batteries according to claim 5, characterized in that: The pressure plate (204) has an air duct groove (211) on the side near the fixed column (208). The air duct groove (211) is connected to the exhaust hole (210). The air duct groove (211) has a flat structure. A sludge collection trough (212) is provided on the bottom of the other side of the pressure plate (204), which is used to collect impurities blown in by the air duct (211).

7. The insulating silicone foam punching device for batteries according to claim 6, characterized in that: In the pressure limiting mechanism (2), except for the pressure plate (204), the fixed column (208), the pressure disc (209), the exhaust hole (210), the air duct groove (211), and the sludge collection trough (212), the remaining components are symmetrically distributed about the central axis of the pressure plate (204) in twos. The air duct groove (211) and the air duct groove (212) are symmetrically distributed about the pressure plate (204), and the telescopic cylinder (201) above the sludge collection trough (212) does not have a fixed column (208) inside.

8. The insulating silicone foam punching device for batteries according to claim 7, characterized in that: The side of the pressure limiting mechanism (2) is provided with a reciprocating calibration mechanism (3) for calibration work. The reciprocating calibration mechanism (3) includes a micro motor (301), which is fixedly connected to the side of the extension plate of the pressure plate (204). The output shaft of the micro motor (301) is rotatably connected inside the side of the extension plate of the pressure plate (204). The output shaft of the micro motor (301) is fixedly connected to a rotating screw (302). The side of the extension plate of the pressure plate (204) is provided with a protrusion.

9. A die-cutting device for insulating silicone foam for batteries according to claim 8, characterized in that: The outer ring surface of the rotating screw (302) is threadedly connected to a first displacement block (303). The side of the first displacement block (303) is provided with a groove, and the size of the groove is adapted to the size of the protrusion. A third spring (304) is fixedly connected to the bottom of the first displacement block (303). The other end of the third spring (304) is fixedly connected to a second displacement block (305). The second displacement block (305) is slidably connected to the outer ring surface of the first displacement block (303). A roller (306) is rotatably connected to the bottom of the second displacement block (305).

10. A die-cutting device for insulating silicone foam for batteries according to claim 9, characterized in that: The first displacement block (303) is slidably connected to the protrusion on the side of the extension plate of the pressure plate (204). After the micro motor (301) is started, it can drive the first displacement block (303), the third spring (304), the second displacement block (305) and the roller (306) to move linearly along the guide of the protrusion. The roller (306) is designed to move on the top of the transmission belt (104) while pushing the silicone foam when it contacts the top of the transmission belt (104).

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