Slitting device for safety film of flexible direct current capacitor

Abstract

The invention provides a flexible direct current capacitor safety film slitting device, and belongs to the technical field of capacitor preparation and cutting equipment, the device comprises a base, a conveying belt on the base, an inverted U-shaped support, and an air cylinder on the support; the cutter assembly comprises a cutter and an annular sleeve arranged outside a cutting edge of the cutter, and the cutter assembly is arranged at the output end of the air cylinder and used for slitting the safety film; the spraying and washing assembly is arranged on one side of the slitting assembly and comprises a pressure stabilizing pipe, a liquid separating pipe is arranged on one face of the pressure stabilizing pipe, a liquid outlet pipe and a notch used for spraying and washing the safety film are arranged at one end of the liquid separating pipe, push plates are arranged at the two ends of the top face of the pressure stabilizing pipe in an upward extending mode correspondingly, and inclined faces are arranged on the faces, facing the cutter assembly, of the tops of the push plates; the length of the inclined face in the horizontal direction is larger than the distance between the cutting edge of the cutter and the outer wall of the annular sleeve, and a liquid inlet pipe is arranged on the other face of the pressure stabilizing pipe. By means of the scheme, safety is high, and metal chippings are reduced in the slitting process.

Description

Technical Field

[0001] The present invention belongs to the technical field of capacitor preparation and cutting equipment, and particularly relates to a flexible DC capacitor safety film slitting device. Background Art

[0002] The safety film used in flexible DC capacitors is a safety film that enhances its electrical and mechanical properties by depositing a thin metal layer on a substrate. This film is commonly used in high-performance capacitors, especially in applications that require high voltage resistance and low loss.

[0003] When in use, the safety film needs to be cut into sheets. However, the cutting knives of existing cutting knife devices are usually directly exposed, and workers are prone to being accidentally injured during the process of taking and placing under the cutting knives, thus there are safety hazards. Moreover, during the slitting process, the cut edges are prone to wrinkling, which affects the quality of the safety film. In addition, there are easily falling metal scraps at the cut edges of the slit safety film, flying around, increasing the difficulty of the subsequent safety film cleaning process. Summary of the Invention

[0004] To solve the above deficiencies of the prior art, the present invention provides a flexible DC capacitor safety film slitting device with high safety and reducing the generation of metal scraps during the slitting process.

[0005] To achieve the purpose of the present invention, the following scheme is proposed: A flexible DC capacitor safety film slitting device, comprising: A base, including a mounting plate, on which two conveyor belts are arranged in sequence, and the arrangement direction of the two conveyor belts is the same as their conveying direction. An inverted U-shaped bracket is straddled on the mounting plate, and a cylinder with a vertically downward output end is provided on the horizontal part of the bracket; A cutting knife assembly, arranged at the output end of the cylinder, including a knife body frame, at the bottom of which a cutting knife is provided. An annular sleeve is provided on the outer periphery of the cutting edge of the cutting knife, and the annular sleeve is made of an elastic material. Pre-pressure members are provided at intervals below the knife body frame. The pre-pressure member includes an annular frame, at the bottom of which a buffer pad is provided, and at the top of the annular frame, a guide rod is provided. The upper end of the guide rod penetrates through the knife body frame. At both ends of one side of the annular frame, sliding rods are respectively provided, and a first spring is sleeved on the sliding rods. A strip-shaped groove is provided between the two sliding rods; A spray washing assembly, including a pressure stabilizing tube, the two ends of which are respectively slidably connected to the sliding rods. The first spring is located between the outer ends of the pressure stabilizing tube and the sliding rods. A liquid distribution tube is arrayedly communicated on one side of the pressure stabilizing tube, and one end of the liquid distribution tube extends into the strip-shaped groove, and an outlet pipe is provided at one end of the liquid distribution tube for spraying and washing the cut edge of the safety film. At both ends of the top surface of the pressure stabilizing tube, push plates extending upward are respectively provided, and at the top of the push plate, an inclined surface facing the knife body frame is provided. The length of the inclined surface in the horizontal direction is greater than the distance between the cutting edge of the cutting knife and the outer wall of the annular sleeve. An inlet pipe is provided on the other side of the pressure stabilizing tube.

[0006] Further, the butt joint of the two conveyor belts corresponds to the position of the lower blade of the cutting knife.

[0007] Further, the knife body frame is in a rectangular frame structure. There are stepped holes penetrating through the four corners of the bottom of the knife body frame respectively, and the large ends of the stepped holes face downward. A second spring is sleeved on the guide rod, and the large ends of the stepped holes are used to accommodate the second spring.

[0008] Further, mounting grooves are respectively arranged on the bottom surface of the knife body frame facing the push plate side, and rollers are rotatably arranged in the mounting grooves.

[0009] Further, the outer circumferences of the rollers respectively protrude from one side of the knife body frame, and the length of the rollers is greater than the width of the push plate.

[0010] Further, the cutting edge of the cutting knife has a certain angle with the horizontal plane.

[0011] Further, the annular sleeve is made of a sponge pad.

[0012] Further, a notch is arranged at the lower end of the push plate facing the annular frame side, and the top of the notch is flush with the top surface of the annular frame.

[0013] Further, liquid outlet holes are arranged in a circumferential array at the lower end of the liquid outlet pipe.

[0014] The beneficial effects of the present invention are as follows: 1. After the cutting knife cuts the safety film, the liquid outlet pipe automatically moves to directly above the cut to spray and wash the cut, thereby removing the metal chips generated at the cut, reducing the residual metal chips on the safety film after cutting, and reducing the cleaning difficulty of the subsequent cleaning process; 2. An annular sleeve made of a sponge pad is sleeved on the outer circumference of the cutting knife, which can not only buffer the contact stress when the cutting knife cuts the safety film, but also reduce the scattering range of metal chips when the cutting knife cuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are only for illustrating the selected embodiments, not all possible implementation schemes, and are not intended to limit the scope of the present invention.

[0016] Figure 1 Shows the overall structural schematic diagram of the present application.

[0017] Figure 2 Shows the cross-sectional view of the present application along the width direction of the bracket.

[0018] Figure 3 Shows the Figure 2 partial enlarged schematic view of part A of the present application.

[0019] Figure 4 Shows the external structural schematic diagram of the cutting knife assembly and the spray washing assembly of the present application.

[0020] Figure 5 The three - dimensional structure schematic diagram of the cutter assembly and the spray - washing assembly of the present application is shown in a bottom - up view.

[0021] Figure 6 The present application shows Figure 5 The partial enlarged schematic diagram at position B.

[0022] Figure 7 The present application shows Figure 5 The partial enlarged schematic diagram at position C.

[0023] Figure 8 The front - projection schematic diagram of the cutter and the cutter body frame of the present application in the length direction is shown.

[0024] Figure 9 The three - dimensional structure schematic diagram of the pre - pressing part of the present application is shown.

[0025] Figure 10 The schematic diagram of the position state of the roller and the lowest end of the inclined plane during the downward movement of the cutter of the present application is shown.

[0026] Figure 11 The schematic diagram of the state when the cutter of the present application cuts the safety film is shown.

[0027] Markings in the figure: safety film - 1, incision - 2, base - 10, mounting plate - 11, conveyor belt - 12, bracket - 13, cylinder - 14, cutter assembly - 20, cutter body frame - 21, stepped hole - 211, mounting groove - 212, roller - 213, cutter - 22, annular sleeve - 23, pre - pressing part - 24, annular frame - 241, guide rod - 242, sliding rod - 243, first spring - 244, strip - shaped groove - 245, second spring - 246, spray - washing assembly - 30, voltage - stabilizing tube - 31, liquid - distributing tube - 32, liquid - outlet tube - 33, liquid - outlet hole - 331, push plate - 34, inclined plane - 341, notch - 342, liquid - inlet tube - 35. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments.

[0029] As Figures 1 - 11 shown, this embodiment provides a flexible DC capacitor safety film slitting device, including a base 10, a cutter assembly 20 vertically arranged on the base 10, and a spray - washing assembly 30 disposed through one side of the starting assembly 20.

[0030] Specifically, as Figure 1As shown in the figure, the base 10 includes a mounting plate 11, two conveyor belts 12, a bracket 13, and a cylinder 14. The mounting plate 11 is horizontally arranged, and a through groove is formed in the middle thereof. The two conveyor belts 12 are symmetrically arranged on both sides of the through groove respectively, and the conveying directions of the two conveyor belts 12 are the same, which are used for conveying the safety film 1. The bracket 13 has an inverted U-shaped structure, and the bracket 13 straddles the top surface of the mounting plate 11. The two ends of the vertical part of the bracket 13 are vertically connected to both sides of the mounting plate 11 respectively. The distance between the inner walls of the two vertical parts on both sides of the bracket 13 is greater than the width of the two conveyor belts 12. The cylinder 14 is arranged on the horizontal part of the bracket 13, and the output end of the cylinder 14 vertically passes through the horizontal part of the bracket 13 downward. The axis of the output end of the cylinder 14 corresponds to the midpoint of the through groove.

[0031] As Figures 2 - 3 shown in the figure, the cutter assembly 20 includes a cutter body frame 21, a cutter 22, an annular sleeve 23, and a pre-pressing member 24. The center of the top surface of the cutter body frame 21 is connected to the output end of the cylinder 14. The cutter 22 is arranged on the bottom surface of the cutter body frame 21, and the length direction of the cutter 22 is the same as the width direction of the two conveyor belts 12. The cutting edge of the cutter 22 corresponds to the midline of the through groove, that is to say, the butt joint of the two conveyor belts 12 is correspondingly arranged with the cutting position of the cutter 22. The annular sleeve 23 is arranged on the outer periphery of the cutting edge of the cutter 22. The bottom surface of the annular sleeve 23 protrudes downward from the cutting edge of the cutter 22 by a certain length, and the annular sleeve 23 is made of an elastic material. When the safety film 1 is slit, the bottom surface of the annular sleeve 23 is used to press both sides of the cut of the safety film 1 to prevent metal debris from splashing out when the cutter 22 cuts the safety film 1. Specifically, a sponge pad can be used.

[0032] As Figures 4 - 5 、 Figure 9 shown in the figure, the pre-pressing member 24 includes an annular frame 241, guide rods 242, sliding rods 243, and a first spring 244. The annular frame 241 has a rectangular frame structure, and the inner wall size thereof is larger than the outer size of the annular sleeve 23. A buffer pad is arranged at the bottom of the annular frame 241, which is used to pre-press the outer periphery of the cut of the safety film 1 so that the safety film 1 is straightened when it is slit. The guide rods 242 are respectively arranged at the four corners of the top of the annular frame 241, and the upper ends of the guide rods 242 pass through the cutter body frame 21. The sliding rods 243 are respectively arranged at both ends of one side of the annular frame 241, and the sliding rods 243 are horizontally arranged, and the first spring 244 is sleeved on the sliding rods 243. A strip-shaped groove 245 is arranged between the two sliding rods 243, and the strip-shaped groove 245 penetrates through the inside and outside of the annular frame 241.

[0033] As Figures 3 - 5As shown in the figure, the spray cleaning assembly 30 includes a pressure stabilizing tube 31, a liquid distribution tube 32, a liquid outlet tube 33, a push plate 34, and a liquid inlet tube 35. Both ends of the pressure stabilizing tube 31 are slidably connected to the sliding rod 243. One end of the first spring 244 abuts against the outer side of the pressure stabilizing tube 31, and the other end abuts against the outer end of the sliding rod 243. The liquid distribution tube 32 is arranged inside the pressure stabilizing tube 31 in an array along the length direction of the pressure stabilizing tube 31, and is perpendicular to the falling direction of the cutting knife 22. One end of the liquid distribution tube 32 facing the annular frame 241 extends into the annular frame 241 along the strip-shaped groove 245. The liquid outlet tube 33 is arranged below the end of the liquid distribution tube 32 extending into the annular frame 241 for spray cleaning the incision 2 of the safety film 1, so as to clean the fallen metal debris. The cleaning liquid used is anhydrous ethanol. The push plate 34 is vertically arranged above the top surface of the pressure stabilizing tube 31, and a slope 341 is arranged on one side of the top surface of the push plate 34 facing the tool body frame 21. The width of the slope 341 is greater than the distance between the cutting edge of the cutting knife 22 and the outer wall of the annular sleeve 23. When the cutting knife 22 moves downward, the outer side of the tool body frame 21 pushes the slope 341, so that the push plate 34 drives the pressure stabilizing tube 31 to move away from the tool body frame 21, so that the liquid distribution tube 32 moves away from directly below the cutting knife 22 to avoid the liquid distribution tube 32 interfering with the vertical downward movement of the cutting knife 22. The other side of the pressure stabilizing tube 31 is provided with a liquid inlet tube 35, and one end of the liquid inlet tube 35 is connected to a liquid inlet pump.

[0034] Specific usage process: After the safety film 1 is conveyed a predetermined length along the conveying direction of the two conveyor belts 12, the conveyor belt 12 is paused, and the air cylinder 14 is started. The output end of the air cylinder 14 moves vertically downward. First, the annular frame 241 vertically falls onto the safety film 1, and the safety film is straightened under the action of the annular frame 241. As the output end of the air cylinder 14 continues to move downward, the tool body frame 21 acts on the slope 341, thereby pushing the push plate 34 to move away from the annular frame 241, driving the pressure stabilizing tube 31 to move outward along the sliding rod 243. At the same time, the first spring 244 is compressed, and the liquid distribution tube 32 and the liquid outlet tube 33 move in the direction of the strip-shaped groove 245 under the movement of the pressure stabilizing tube 31. As Figure 10 shown, when the tool body frame 21 vertically moves downward past the slope 341, the liquid distribution tube 32 and the liquid outlet tube 33 move out from directly below the annular sleeve 23. As Figure 11 shown, when the output end of the air cylinder 14 continues to push downward until the bottom surface of the tool body frame 21 fits against the top surface of the annular frame 241, the cutting knife 22 completes the cutting of the safety film 1, and the annular sleeve 23 acts on the periphery of the incision 2, thereby reducing the range of metal debris falling off. When the cutting knife 22 finishes cutting, the air cylinder 14 moves upward into the return stroke and drives the cutting knife 22 to move to as Figure 3The height state shown is when the push plate 34 loses the thrust of the tool body holder 21. Under the restoring force of the first spring 344, the voltage stabilizing tube 31 is pushed to move towards the direction of the annular holder 241, so that the liquid distribution tube 32 and the liquid outlet tube 33 move downward to directly below the cutting tool 22. When the side of the voltage stabilizing tube 31 facing the annular holder 241 fits with the annular holder 241, the liquid outlet tube 33 is located directly below the cutting edge of the cutting tool 22. At this time, the liquid inlet pump is turned on to make the liquid outlet tube 33 spray the cleaning liquid to wash away the fallen metal debris.

[0035] Specifically, as Figures 10 - 11 shown, stepped holes 211 are respectively provided through the four corners at the bottom of the tool body holder 21, and the large ends of the stepped holes 211 face downward. A second spring 246 is sleeved on the guide rod 242. When the annular holder 241 is already on the safety film and the cutting tool 22 is still moving downward, it can buffer the impact force when the tool body holder 21 falls onto the annular holder 241, thereby preventing the bottom of the annular holder 241 from pressing out creases on the safety film 1 when the tool body holder 21 and the cutting tool 22 move downward, which affects the quality of the safety film 1. In addition, the large ends of the stepped holes 211 can also be used to accommodate the second spring 246 to increase the downward movement distance of the cutting tool 22, so as to meet the slitting of safety films 1 with different thicknesses.

[0036] Specifically, as Figure 5 、 Figure 7 shown, both ends of the bottom surface of the tool body holder 21 on the side facing the push plate 34 are respectively recessed inward to form installation grooves 212. The installation grooves 212 communicate with the side surface on one side of the tool body holder 21. A roller 213 is rotatably provided in the installation groove 212, and the outer circumference of the roller 213 protrudes towards the side surface of the tool body holder 21. When the tool body holder 21 moves vertically downward, the roller 213 acts on the push plate 34 instead of the tool body holder 21, thereby reducing the friction between the tool body holder 21 and the push plate 34 and the inclined surface 341 at its top, and making the length of the roller 213 greater than the width of the push plate 34 to make the contact between the roller 213 and the push plate 34 more stable.

[0037] Preferably, as Figure 8 shown, the cutting edge of the cutting tool 22 has a certain angle with the horizontal plane to reduce the downward pressure when the cutting tool 22 slits the safety film 1, so as to avoid deformation at the cut of the safety film 1 during slitting. Preferably, a long strip-shaped convex block is provided at the connection between the cutting tool 22 and the tool body holder 21, and the size of the convex block matches the inner wall of the annular holder 241 to make the slitting of the cutting tool 22 more stable and prevent the cutting tool 22 from shaking.

[0038] Preferably, as Figures 10 - 11As shown in the figure, a notch 342 is provided at the lower end of the push plate 34 facing the side of the annular frame 241, and the top of the notch 342 is flush with the top surface of the annular frame 241. When the tool body holder 21 moves vertically downward and the roller 213 pushes the push plate 34 to move away from the annular frame 241, the notch 342 of the push plate 34 can be kept in contact with the top surface of the annular frame 241 during the movement, thereby increasing the stability of the push plate 34.

[0039] Preferably, as Figure 6 shown, liquid outlet holes 331 are circumferentially and arrayedly distributed at the lower end of the liquid outlet pipe 33 to increase the uniformity of the cleaning liquid spraying.

[0040] The above are only the preferred embodiments of the present invention and do not represent the only or limit the present invention. Those skilled in the art should understand that various changes or equivalent replacements made to the present invention without departing from the scope of the present invention all fall within the scope of protection of the present invention.

Claims

1. A flexible DC capacitor safety film slitting device, characterized in that, Comprising: A base (10), including a mounting plate (11) on which two conveyor belts (12) are arranged in sequence, and the arrangement direction of the two conveyor belts (12) is the same as their conveying direction. A bracket (13) in an inverted U shape is straddled on the mounting plate (11), and a cylinder (14) with its output end vertically downward is provided on the horizontal part of the bracket (13); A cutter assembly (20) is provided on a tool body frame (21) at the output end of the cylinder (14). A cutter (22) is provided at the bottom thereof. An annular sleeve (23) is provided on the outer periphery of the cutting edge of the cutter (22). The annular sleeve (23) is made of an elastic material. A pre-pressing member (24) is provided at intervals below the tool body frame (21). The pre-pressing member (24) includes an annular frame (241). A buffer pad is provided at the bottom of the annular frame (241). A guide rod (242) is provided at the top of the annular frame (241). The upper end of the guide rod (242) is inserted into the tool body frame (21). Slide rods (243) are respectively provided at both ends on one side of the annular frame (241). A first spring (244) is sleeved on the slide rods (243). A strip-shaped groove (245) is provided between the two slide rods (243); A spray washing assembly (30), including a pressure stabilizing pipe (31). The two ends of the pressure stabilizing pipe (31) are respectively slidably connected to the slide rods (243). The first spring (244) is located between the outer ends of the pressure stabilizing pipe (31) and the slide rods (243). A liquid distribution pipe (32) is arrayedly communicated on one side of the pressure stabilizing pipe (31). One end of the liquid distribution pipe (32) extends into the strip-shaped groove (245), and an outlet pipe (33) is provided at one end of the liquid distribution pipe (32) for spray washing the incision (2) of the safety film (1). Push plates (34) are respectively provided at both ends of the top surface of the pressure stabilizing pipe (31) and extend upward. An inclined surface (341) facing the tool body frame (21) is provided at the top of the push plate (34). The length of the inclined surface (341) in the horizontal direction is greater than the distance between the cutting edge of the cutter (22) and the outer wall of the annular sleeve (23). An inlet pipe (35) is provided on the other side of the pressure stabilizing pipe (31).

2. The flexible DC capacitor safety film slitting device according to claim 1, characterized in that, The docking position of the two conveyor belts (12) corresponds to the lower cutting position of the cutter (22).

3. The flexible DC capacitor safety film slitting device according to claim 1, characterized in that, The tool body frame (21) has a rectangular frame structure. Step holes (211) are respectively provided through the four corners at the bottom of the tool body frame (21), and the large ends of the step holes (211) face downward. A second spring (246) is sleeved on the guide rod (242), and the large ends of the step holes (211) are used to accommodate the second spring (246).

4. The flexible DC capacitor safety film slitting device according to claim 1, characterized in that, Mounting grooves (212) are respectively provided on the bottom surface of the tool body frame (21) on the side facing the push plate (34). Rollers (213) are rotatably provided in the mounting grooves (212).

5. The flexible DC capacitor safety film slitting device according to claim 4, characterized in that, The outer peripheries of the rollers (213) respectively protrude from one side of the tool body frame (21), and the length of the rollers (2113) is greater than the width of the push plate (34).

6. The flexible DC capacitor safety film slitting device according to claim 1, characterized in that, The cutting edge of the cutter (22) has a preset angle with the horizontal plane.

7. The flexible DC capacitor safety film slitting device according to claim 1, characterized in that, The annular sleeve (23) is made of a sponge pad.

8. The flexible DC capacitor safety film slitting device according to claim 1, characterized in that, A notch (342) is provided at the lower end of the side of the push plate (34) facing the annular frame (241), and the top of the notch (342) is flush with the top surface of the annular frame (241).

9. The flexible DC capacitor safety film slitting device according to claim 1, characterized in that, Liquid outlet holes (331) are circumferentially arrayed at the lower end of the outlet pipe (33).

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