Processing tool and processing method for light-shielding adhesive tape

Abstract

The application discloses a processing tool and a processing method of light-shielding adhesive strips and belongs to the technical field of sealing adhesive strip production equipment. The processing tool comprises a workbench, a gap punching device, a support, two edge cutting devices, two supporting molds, two clamps and two control buttons. The method comprises the following steps: two operators stand in front of and behind the workbench respectively and place two light-shielding adhesive strips on the front and rear parts of the processing tool respectively; the middle part of the light-shielding adhesive strip is placed on an L-shaped supporting surface and below the upper mold, is placed in the first L-shaped groove of the supporting mold, and the left and right ends are respectively inserted into the corresponding L-shaped mold holes of the two edge cutting devices and the edge cutting waste of the last time is pushed out; the two operators operate the clamps to clamp the two light-shielding adhesive strips on the front and rear sides of the lower mold respectively; after the control button is lighted, one of the operators presses the control button, and the gap punching device and the two edge cutting devices are synchronously driven to simultaneously realize edge cutting and punching.

Description

Technical Field

[0001] This invention belongs to the technical field of sealing strip production equipment, and specifically relates to a processing fixture and processing method for a light-shielding strip. Background Technology

[0002] like Figure 1-2 The image shows an automotive sunshade strip. This strip has an L-shaped structure with a notch in the middle of its horizontal side. The manufacturing process involves: extrusion using an extruder, followed by vulcanization, then edge trimming using an online cutting device (cutting under tension, with a length longer than the design length), and finally, fixed-length trimming and punching to create the notch under non-tension conditions. The fixed-length trimming and punching to create the notch under non-tension conditions are typically performed on two separate machines.

[0003] For example, fixed-length cutting can be achieved on a device with a similar application number, CN202021934573.9.

[0004] For example, punching can be achieved on a device similar to that described in application number CN202221185379.4. This patent discloses a notch punching die, characterized by comprising: a lower die, an upper die, a punching die, an upper die holder, and a lower die holder. The upper die is disposed on the upper die holder, and the lower die is disposed on the lower die holder. The upper die holder and the lower die holder are movably connected, and the punching die movably passes through the upper die and the lower die. The lower die has a first through-channel penetrating its top and bottom. A protruding support block is disposed on the top of the lower die. A support portion is formed on the side of the support block. The support portion is located on one side of the first through-channel and extends away from the support block. A rib support surface is formed on the top of the support portion, and a rib clearance space is formed between the bottom of the support portion and the top of the lower die. The upper die is provided with a second through channel penetrating its top and bottom. A side limiting block is provided on one side of the upper die. When the upper die and the lower die are closed, the upper die presses against the top of the support block. The side limiting block is located on one side of the support part. The upper die, the lower die, the side limiting block, and the support part together form a fixed space. The rib clearance space is located within the fixed space. The first through channel and the second through channel are connected to form a guide channel. The fixed space is connected to the guide channel and is located between the first through channel and the second through channel. The punching die extends into the guide channel from the top of the guide channel and moves through the fixed space.

[0005] In existing technologies, the light-shielding strip needs to be transferred between two devices, and positioning is required for each processing, which greatly affects processing efficiency. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a processing fixture and method for light-shielding strips, simultaneously achieving fixed-length edge cutting and punching, and processing two light-shielding strips at the same time, resulting in high processing efficiency. The technical solution is as follows: On one hand, this invention provides a processing fixture for light-shielding strips, including a worktable, a punching device 1, a support 2, two edge-cutting devices 3, two supporting molds 4, two clamps 5, and two control buttons 7. The punching device 1 includes a portal frame 10, a lower mold 13, an upper mold 14, a punching die 15, an upper mold frame 11, a lower mold frame 12, and a punching cylinder 16. The support 2 is arranged on the worktable along the left-right direction or placed on the worktable. The punching device 1 is located in the middle of the support 2. The two edge-cutting devices 3 are respectively located at the left and right ends of the support 2. The two supporting molds 4 are respectively located on the left and right sides of the punching device 1 and between the corresponding edge-cutting devices 3, and they are all arranged along the left-right direction. The punching device 1 and the edge-cutting devices 3 can both process two light-shielding strips 6 simultaneously. The two light-shielding strips 6 are arranged side by side and opposite to each other. Correspondingly, The lower mold 13 has L-shaped support surfaces at both its front and rear ends that cooperate with the light-shielding strips 6. The punching die 15 punches the opposite sides of the horizontal edges of the two light-shielding strips 6 simultaneously. The upper mold 14 presses the horizontal edges of the two light-shielding strips 6 at both its front and rear ends simultaneously. The supporting mold 4 has two first L-shaped grooves 42 arranged side by side and opposite to each other that cooperate with the light-shielding strips 6. The cutting device 3 has two L-shaped die holes arranged side by side and opposite to each other that cooperate with the light-shielding strips 6. The cutter on the cutting device 3 can cut the edges of the two light-shielding strips 6 simultaneously. The two clamps 5 are located on the front and rear sides of the punching device 1, respectively. They are both mounted on the bracket 2 and are used to clamp the vertical edges of the two light-shielding strips 6. The punching device 1 and the two cutting devices 3 are driven synchronously and are controlled by any one of the control buttons 7. The two control buttons 7 are located on the upper side of the two supporting molds 4.

[0007] In this embodiment of the invention, the bracket 2 includes a rectangular plate arranged in the left-right direction and a plurality of support units arranged side by side on its lower side; a slag discharge hole is provided in the middle of the rectangular plate and directly below the punching notch device 1, and mounting holes 8 are provided at both ends in the left-right direction; the support unit includes two legs arranged side by side in front and behind, the legs are arranged vertically and their lower ends are placed on or fixed on the workbench, the punching notch device 1 and the clamp 5 are both fixed in the middle of the rectangular plate, and two edge cutting devices 3 are respectively provided in the two mounting holes 8 and can be adjusted left and right on the rectangular plate.

[0008] In this embodiment of the invention, the trimming device 3 includes a horizontal plate 31 arranged in the front-to-back direction, a vertical plate 32 on the lower side of the horizontal plate 31, a trimming mold 33 in the middle of the upper side of the horizontal plate 31, a trimming cylinder 34 on the vertical plate 32, two L-shaped mold holes on the trimming mold 33, a U-shaped block 35 directly below the trimming mold 33, and a cutting blade arranged in the front-to-back direction on the U-shaped block 35. The horizontal plate 31 is horizontally arranged, with its front and rear ends located on the front and rear sides of the mounting hole 8 and adjustable left and right on a rectangular plate. It has a strip-shaped hole along its front-to-back direction. The vertical plate 32 is arranged in the front-to-back direction and is vertically arranged, located to the left or right of the strip-shaped hole. The U-shaped block 35 is arranged in the front-to-back direction and is located in the mounting hole 8. Its two arms are located at the front and rear ends of the strip-shaped hole and can move up and down. The trimming cylinder 34 is vertically arranged, with the upper end of its telescopic rod connected to the U-shaped block 35. The bottom is fixedly connected; the cutting mold 33 is arranged in the left and right direction, located in the groove of the U-shaped block 35, and has a slit along its upper edge for the cutter to pass through. The top of the mold and the end away from the supporting mold 4 has a stepped notch; two L-shaped mold holes are arranged side by side and opposite to each other; the L-shaped mold holes are arranged in the left and right direction and are L-shaped holes that cooperate with the light-shielding strip 6; two second L-shaped grooves 36 are arranged side by side on the stepped notch; the two second L-shaped grooves 36 are opposite to each other and cooperate with and connect with the L-shaped mold holes on the corresponding sides. The cutter is located below the light-shielding strip 6 and is arranged vertically. Its front and rear ends are fixed to the two arms of the U-shaped block 35, and its middle part passes through the slit; the top of the slit is flush with the top of the L-shaped mold hole; when the cutting cylinder 34 extends, the cutter abuts against the top of the slit to achieve cutting.

[0009] In this embodiment of the invention, the support mold 4 includes a support plate 41 arranged in the left-right direction and two first L-shaped grooves 42 thereon; the support plate 41 is fixed on the bracket 2 and is located between the trimming device 3 and the lower mold 13, and has operation notches 43 on both the front and rear sides of its left and right ends; the two first L-shaped grooves 42 are located at the front and rear of the support plate 41 respectively, and are arranged side by side and opposite to each other, and are L-shaped grooves that cooperate with the light-shielding strip 6; the operation notches 43 allow the light-shielding strip 6 to be exposed, and its left-right length is 2-4cm; the control button 7 is located on the upper side of the support plate 41 and is located between the two first L-shaped grooves 42.

[0010] Preferably, in this embodiment of the invention, the support 2 is placed on a workbench and is formed by splicing and fixing three sub-supports from left to right. The punching notch device 1 and the clamp 5 are located on the middle sub-support, and the two edge-cutting devices 3 are respectively located on the sub-supports at both ends. The sub-supports at both ends can be replaced to adapt to products of different lengths. The support mold 4 is formed by splicing and fixing two sub-molds from left to right. The sub-mold closer to the punching notch device 1 is longer than the other sub-mold and is fixed on the support 2. It is provided with a control button 7. The other sub-mold is detachably located on the support 2 and can be replaced to adapt to products of different lengths.

[0011] Preferably, in this embodiment of the invention, the control button 7 is a button indicator light. A sensor for detecting whether the light-shielding strip 6 is inserted is provided on the side of the L-shaped mold hole near the supporting mold 4. When the light-shielding strip 6 is inserted into all four L-shaped mold holes, the control button 7 is lit.

[0012] In this embodiment of the invention, the lower mold frame 12 is fixed on the support 2; the portal frame 10 is arranged in the left-right direction, and its vertical beam has clearance notches on both the front and rear sides for the passage of the light-shielding rubber strips 6, which are located on the lower mold frame 12; the punching cylinder 16 is arranged vertically on the top beam of the portal frame 10; the lower mold 13 is arranged in the left-right direction on the lower mold frame 12, located directly below the portal frame 10, and has an elastic buffer block 17 in its middle part, located directly below the punching die 15, with L-shaped support surfaces on the upper part of its front and rear sides, and slag discharge holes that cooperate with the notches to be processed on the upper part of the elastic buffer block 17; the upper mold 14 is arranged in the left-right direction, located directly above the lower mold 13, with a through hole in its middle part for the punching die 15 to pass through, which allows it to move up and down, and its front and rear ends are respectively located directly above the two light-shielding rubber strips 6, with four guide rods 18 on its upper side; the upper mold frame 11 is located directly above the upper mold 14. It is located directly below the gantry bracket 10 and can move up and down. Its upper middle part is fixedly connected to the lower end of the telescopic rod of the punching cylinder 16. Four guide rods 18 are respectively set on the four corners of the upper die 14 and surround the punching die 15. The guide rods 18 are vertically arranged, and their upper parts are slidably mounted on the upper die frame 11. A limiting protrusion is provided at the upper end of the guide rod, and a spring 19 is sleeved on it. The limiting protrusion abuts against the upper side of the upper die frame 11, and the spring 19 is located on the upper die frame 11. Between the upper mold 14 and the upper mold; the punching die 15 is vertically arranged and fixed to the lower middle part of the upper mold frame 11. It is located directly above the elastic buffer block 17, and its lower end is located in the through hole of the upper mold 14. Its front and rear sides are located directly above the two light-shielding rubber strips 6 and its shape matches the shape of the notch to be processed; the L-shaped support surface is arranged in the left and right direction and matches the light-shielding rubber strip 6. The L-shaped support surface, L-shaped mold hole, first L-shaped groove 42 and second L-shaped groove 36 on the corresponding side are flush.

[0013] Specifically, in this embodiment of the invention, the upper mold frame 11 and the upper mold 14 are both rectangular plate structures; the punching mold 15 is a rectangular column structure arranged in the left and right directions, with rounded corners at its four corners and arc-shaped protrusions on its front and rear sides that cooperate with the notch to be processed.

[0014] In this embodiment of the invention, the clamp 5 includes a mounting base 51, a pressure plate 52 slidably disposed on the mounting base 51, and a quick clamp 53 on the mounting base 51 for driving the pressure plate 52 to move back and forth. The mounting base 51 is fixed on the bracket 2 and is located in front of or behind the punching notch device 1. The two pressure plates 52 are respectively located on the front and rear sides of the lower mold 13, and are used to press the vertical edges of the two light-shielding strips 6 onto the two L-shaped support surfaces of the lower mold 13. The quick clamp 53 is arranged in the back and forth direction and is located on the side of the pressure plate 52 away from the lower mold 13. Pulling the quick clamp 53 can move the pressure plate 52 away from the lower mold 13.

[0015] On the other hand, this embodiment of the invention also provides a processing method for light-shielding adhesive strips. The method includes: two operators standing in front of and behind the workbench respectively and placing two light-shielding adhesive strips 6 in front of and behind the processing fixture respectively; the middle part of the light-shielding adhesive strip 6 is placed on the L-shaped support surface and below the upper mold 14, and it is placed in the first L-shaped groove 42 of the support mold 4. Its left and right ends are respectively inserted into the L-shaped mold holes corresponding to the two edge-cutting devices 3 and the edge-cutting waste from the previous step is pushed outward; the two operators operate the clamps 5 to clamp the two light-shielding adhesive strips 6 on the front and rear sides of the lower mold 13 respectively; after the control button 7 is lit, one of the operators presses the control button 7, and the punching notch device 1 and the two edge-cutting devices 3 are driven synchronously to simultaneously realize edge cutting and punching. The beneficial effects of the technical solution provided by the embodiments of the present invention are as follows: (1) It can simultaneously achieve fixed-length cutting and punching, and process two light-shielding strips at the same time, resulting in high processing efficiency; (2) Simple to operate; (3) No need to position the light-blocking strip; (4) The punching device punches downwards and the cutting device cuts upwards, which has a fixing effect on the light-shielding strip, reduces the stretching of the light-shielding strip, and improves the processing accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the light-blocking rubber strip; Figure 2 This is a side view of the light-blocking rubber strip; Figure 3 This is a schematic diagram of the processing fixture for the light-shielding adhesive strip provided in an embodiment of the present invention; Figure 4 yes Figure 3 Usage status diagram; Figure 5 yes Figure 3 A magnified view of the part at the punching notch device; Figure 6 yes Figure 3 A magnified view of the area around the trimming device; Figure 7 This is a left view of the punching notch device and fixture assembly; Figure 8 This is a front view of the punching notch device; Figure 9 This is a schematic diagram of the edge-cutting device.

[0017] In the diagram: 1 punching device, 2 bracket, 3 trimming device, 4 support mold, 5 clamp, 6 light-shielding strip, 7 control button, 8 mounting hole; 10. Portal support frame, 11. Upper mold frame, 12. Lower mold frame, 13. Lower mold, 14. Upper mold, 15. Punching die, 16. Punching cylinder, 17. Elastic buffer block, 18. Guide rod, 19. Spring; 31 Horizontal plate, 32 Vertical plate, 33 Edge cutting device, 34 Edge cutting cylinder, 35 U-shaped block, 36 Second L-shaped groove; 41 Support plate, 42 First L-shaped groove, 43 Operating notch; 51 Mounting base, 52 Pressure plate, 53 Quick clamp. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example 1 See Figure 3-9 Example 1 provides a processing fixture for a light-shielding strip, including a worktable, a punching device 1, a bracket 2, two edge-cutting devices 3, two supporting molds 4, two clamps 5, and two control buttons 7, etc.

[0020] The support 2 is positioned on or on the workbench along the left-right direction. The support 2 includes a rectangular plate along the left-right direction and multiple support units arranged side-by-side on its lower side. A slag discharge hole (for discharging punching waste downwards) is located in the middle of the rectangular plate, directly below the punching notch device 1, and mounting holes 8 are located at both ends along the left-right direction. The mounting holes 8 are specifically rectangular holes. Each support unit includes two legs arranged side-by-side, vertically positioned with their lower ends placed on or fixed to the workbench. The punching notch device 1 and the clamp 5 are both fixed to the middle of the rectangular plate. Two cutting devices 3 are respectively located in the two mounting holes 8 and can be adjusted left-right on the rectangular plate.

[0021] Both the punching device 1 and the trimming device 3 can process two light-shielding strips 6 simultaneously. The two light-shielding strips 6 are arranged side by side and opposite to each other, so the supporting mold 4 can support the two light-shielding strips 6 simultaneously. At this time, the vertical edge of the light-shielding strip 6 is vertically arranged; the horizontal edge of the light-shielding strip 6 is horizontally arranged front to back, and it is located on the inner side of the upper end of the vertical edge.

[0022] Two supporting molds 4 are located on the left and right sides of the punching device 1 and between the corresponding cutting devices 3, respectively. They are arranged in a left-right direction and mounted on a rectangular plate. Each supporting mold 4 includes a supporting plate 41 arranged in a left-right direction and two first L-shaped grooves 42 on it. The supporting plate 41 is fixed to the bracket 2 (specifically a rectangular plate) and is located between the cutting device 3 and the lower mold 13. Operating notches 43 are provided on both the front and rear sides of its left and right ends (i.e., the outer side of the end of the first L-shaped groove 42 is notched, where the operator inserts the light-shielding strip 6 into the L-shaped mold hole). The two first L-shaped grooves 42 are located at the front and rear of the supporting plate 41, arranged side-by-side and opposite to each other. They are L-shaped grooves that cooperate with the light-shielding strip 6. The operating notches 43 expose the light-shielding strip 6, with a left-right length of 2-4 cm, making it easier for the operator to operate. A control button 7 is located on the upper side of the supporting plate 41 and between the two first L-shaped grooves 42.

[0023] Two trimming devices 3 are respectively located at the left and right ends of the bracket 2. Specifically, the trimming device 3 includes a horizontal plate 31, a vertical plate 32, a trimming mold 33, a trimming cylinder 34, a U-shaped block 35, a cutter (not shown), and two L-shaped die holes. The horizontal plate 31 is horizontally arranged along the front-to-back direction, with its front and rear ends located on the front and rear sides of the mounting hole 8 and adjustable left and right on the rectangular plate. It has a strip-shaped hole (specifically a rectangular hole) along its front-to-back direction. The vertical plate 32 is arranged along the front-to-back direction and is fixed to the lower side of the horizontal plate 31. It is vertically arranged and passes downward through the mounting hole 8, located on the left or right side of the strip-shaped hole. The U-shaped block 35 is located directly below the trimming mold 33, along the front-to-back direction, and is located in the mounting hole 8. Its two arms (adjacent to the front and rear sides of the trimming mold 33, respectively) are located at the front and rear ends of the strip-shaped hole, and it can move up and down. The trimming cylinder 34 is vertically positioned, with its upper end of the telescopic rod fixedly connected to the bottom of the U-shaped block 35, and fixed to the left or right side of the upright plate 32. The trimming mold 33 is positioned along the left-right direction, located in the upper middle part of the horizontal plate 31, within the groove of the U-shaped block 35. It has a slit along its upper edge for the cutter to pass through, and a stepped notch at its top, away from the supporting mold 4, to facilitate the discharge of trimming waste. Two L-shaped mold holes are arranged side-by-side and opposite to each other, located at the front and rear of the trimming mold 33, respectively. The L-shaped mold holes are arranged along the left-right direction and are L-shaped holes that mate with the light-shielding strip 6. Two second L-shaped grooves 36 are arranged side-by-side on the stepped notch; the two second L-shaped grooves 36 are opposite to each other, mate with and connect to the corresponding L-shaped mold holes, and are L-shaped grooves that mate with the light-shielding strip 6. The cutter can simultaneously cut two light-blocking rubber strips 6. It is located below the light-blocking rubber strips 6, arranged in a front-to-back direction and vertically. Its front and rear ends are respectively fixed to the upper parts of the two arms of the U-shaped block 35. Its middle part passes through the slit and can move up and down. Its top is the cutting edge. The top of the slit is flush with the top of the L-shaped mold hole. When the cutting cylinder 34 extends, the cutter rests against the top of the slit to achieve the cutting.

[0024] The punching device 1 includes a portal frame 10, a lower die 13, an upper die 14, a punching die 15, an upper die frame 11, a lower die frame 12, and a punching cylinder 16. The lower die frame 12 is fixed on the support 2 (specifically a rectangular plate), which is a rectangular plate arranged in the left-right direction. The portal frame 10 is arranged in the left-right direction, and its vertical beam has clearance notches (specifically isosceles trapezoidal notches) on both the front and rear sides for the passage of the light-shielding rubber strip 6, which are located on the lower die frame 12. The punching cylinder 16 is arranged vertically on the top beam of the portal frame 10, and its telescopic rod passes downward through the top beam. The lower die 13 is mounted on the lower die frame 12 along the left-right direction, directly below the portal frame 10. An elastic buffer block 17 (specifically a vertically positioned rubber column) is located in its center, directly below the punching die 15. L-shaped support surfaces are provided on the upper parts of both the front and rear sides of the upper die 13. Slag discharge holes (matching the slag discharge holes on the rectangular plate) are provided on the upper die 14, along the front and rear sides of the elastic buffer block 17, to accommodate the notch to be processed. The upper die 14 is mounted along the left-right direction, directly above the lower die 13. A through hole (clearly fitted with the punching die 15) is provided in its center, allowing it to move up and down. Its front and rear ends are respectively located directly above the two light-shielding rubber strips 6, simultaneously pressing the horizontal edges of the two light-shielding rubber strips 6. Four guide rods 18, specifically rectangular plates, are provided on its upper side. The upper die holder 11 is located directly above the upper die 14 and directly below the portal frame 10. It can move up and down, and its upper center is fixedly connected to the lower end of the telescopic rod of the punching cylinder 16. It is specifically a rectangular plate. Four guide rods 18 are respectively located at the four corners of the upper die 14 and surround the punching die 15. The guide rods 18 are vertically arranged, and their upper parts are slidably mounted on the upper die holder 11 (specifically located at the corresponding corner of the upper die holder 11, with a circular hole for the guide rods 18 to pass through). The upper end of the guide rod has a limiting protrusion (which cannot pass through the circular hole), and a spring 19 is sleeved on it, which is specifically a smooth circular rod. The limiting protrusion abuts against the upper side of the upper die holder 11, and the spring 19 is vertically arranged and located between the upper die holder 11 and the upper die 14. The punching die 15 is vertically positioned and simultaneously punches the opposite sides of the horizontal edges of the two light-shielding strips 6. It is fixed to the lower center of the upper die frame 11, located directly above the elastic buffer block 17. Its lower end is located in the through hole of the upper die 14, and its front and rear sides are directly above the two light-shielding strips 6, with its shape matching the shape of the notch to be processed. Specifically, the punching die 15 is a rectangular column structure arranged in the left-right direction, with rounded corners and arc-shaped protrusions on its front and rear sides that match the notch to be processed. The L-shaped support surface is arranged in the left-right direction and matches the light-shielding strips 6. The L-shaped support surface, L-shaped die hole, first L-shaped groove 42, and second L-shaped groove 36 on the corresponding sides are flush.

[0025] Two clamps 5 are located on the front and rear sides of the punching device 1, respectively, and are mounted on the bracket 2. They are used to clamp the vertical edges of the two light-shielding strips 6. Specifically, the clamps 5 include a mounting base 51, a pressure plate 52, and a quick clamp 53. The mounting base 51 is fixed on the bracket 2 (specifically a rectangular plate) and is located in front of or behind the punching device 1. It has a sliding groove along its upper edge in the front-to-back direction. The lower part of the pressure plate 52 is slidably disposed in the sliding groove, and is positioned in the left-to-right direction, facing the L-shaped support surface. The two pressure plates 52 are located on the front and rear sides of the lower mold 13, respectively, and are used to press the vertical edges of the two light-shielding strips 6 against the two L-shaped support surfaces of the lower mold 13. The quick clamp 53 is mounted on the mounting base 51 in the front-to-back direction, located on the side of the pressure plate 52 away from the lower mold 13, and is used to drive the pressure plate 52 to move in the front-to-back direction. Pulling the quick clamp 53 can move the pressure plate 52 away from the lower mold 13.

[0026] In this embodiment, the elastic buffer block 17 and the pressure plate 52 are designed to ensure that they do not interfere with the movement of the lower mold 13.

[0027] The punching device 1 and the two trimming devices 3 are driven synchronously and are both controlled by any one of the control buttons 7. The two control buttons 7 are respectively located on the upper side of the two supporting molds 4 to facilitate operation by the two operators.

[0028] Example 2 Example 2 provides a processing fixture for light-shielding strips, the structure of which is basically the same as that of Example 1, except that: in this embodiment, the bracket 2 is placed on a workbench and is formed by splicing and fixing three sub-brackets from left to right. The punching device 1 and the clamp 5 are located on the middle sub-bracket, and two edge-cutting devices 3 are respectively located on the sub-brackets at both ends. The sub-brackets at both ends can be replaced to accommodate products of different lengths. Two support units are arranged side by side on the lower side of each sub-bracket. The support mold 4 is formed by splicing and fixing two sub-molds from left to right; the sub-mold closer to the punching device 1 is longer than the other mold and is fixed on the bracket 2, on which a control button 7 is provided; the other sub-mold is detachably located on the bracket 2 and can be replaced to accommodate products of different lengths. Furthermore, the splicing point between the middle sub-bracket and the end sub-bracket is located directly above the splicing point of the two sub-molds.

[0029] Example 3 Example 3 provides a processing fixture for a light-shielding strip, the structure of which is basically the same as that of Example 1. The difference is that the control button 7 in this embodiment is a button indicator light, and a sensor for detecting whether the light-shielding strip 6 is inserted is provided on the side of the L-shaped mold hole near the supporting mold 4. When the light-shielding strip 6 is inserted into all four L-shaped mold holes, the control button 7 is lit.

[0030] Example 4 See Figure 9Example 4 provides a processing fixture for a light-shielding strip, the structure of which is basically the same as that of Example 1. The difference is that in this embodiment, the upright plate 32 is located on the side of the strip hole away from the punching notch device 1, and the edge-cutting cylinder 34 is located on the side of the upright plate 32 close to the punching notch device 1.

[0031] Example 5 Example 5 provides a processing fixture for a light-shielding strip, the structure of which is basically the same as that of Example 1, except that the lower mold frame 12 and the mounting base 51 in this embodiment are connected together to form an integral structure.

[0032] Example 6 Example 6 provides a method for processing light-shielding adhesive strips, using the processing fixtures disclosed in Examples 1, 2, 3, 4, or 5. The method includes: two operators standing in front of and behind the workbench, respectively, placing two light-shielding adhesive strips 6 at the front and rear of the processing fixture. The middle of the light-shielding adhesive strip 6 is placed on the L-shaped support surface and below the upper mold 14, positioned in the first L-shaped groove 42 of the supporting mold 4. Its left and right ends are inserted into the corresponding L-shaped die holes of the two trimming devices 3, pushing out the previous trimming waste. The two operators operate the clamps 5 to clamp the two light-shielding adhesive strips 6 on the front and rear sides of the lower mold 13. After the control button 7 is illuminated, one operator presses the control button 7, and the punching device 1 and the two trimming devices 3 are driven synchronously to simultaneously achieve trimming and punching. The punching process of the punching device 1 is as follows: the trimming cylinder 34 extends, the lower die 13 moves downward and presses against the horizontal edge of the light-shielding strip 6; the upper die frame 11 continues to move downward, the punching die 15 passes downward through the lower die 13, and its front and rear sides punch the corresponding sides of the light-shielding strip 6, with its bottom abutting against the elastic buffer block 17. The trimming process of the trimming device 3 is as follows: the trimming cylinder 34 extends, and the cutter moves upward to achieve trimming.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A processing fixture for a light-shielding strip, comprising a worktable and a punching device (1), wherein the punching device (1) comprises a gantry bracket (10), a lower die (13), an upper die (14), a punching die (15), an upper die holder (11), a lower die holder (12), and a punching cylinder (16); characterized in that, The processing fixture also includes a bracket (2), two edge cutting devices (3), two support molds (4), two clamps (5) and two control buttons (7). The bracket (2) is arranged on the workbench or placed on the workbench along the left and right direction. The punching notch device (1) is located in the middle of the bracket (2). The two edge cutting devices (3) are respectively located at the left and right ends of the bracket (2). The two support molds (4) are respectively located between the left and right sides of the punching notch device (1) and the corresponding edge cutting devices (3), and they are all arranged along the left and right direction. Both the punching device (1) and the trimming device (3) can process two light-shielding strips (6) simultaneously. The two light-shielding strips (6) are arranged side by side and opposite to each other. Correspondingly, both ends of the lower die (13) are provided with L-shaped support surfaces that cooperate with the light-shielding strips (6). The punching die (15) punches the opposite sides of the horizontal edges of the two light-shielding strips (6) simultaneously. Both ends of the upper die (14) press the horizontal edges of the two light-shielding strips (6) simultaneously. The supporting die (4) is provided with two first L-shaped support surfaces that cooperate with the light-shielding strips (6) arranged side by side and opposite to each other. The cutting device (3) has two L-shaped mold holes arranged side by side and opposite to each other to cooperate with the light-shielding strips (6). The cutter on it can cut the two light-shielding strips (6) at the same time. The two clamps (5) are located on the front and rear sides of the punching device (1) respectively. They are both set on the bracket (2) and are used to clamp the vertical edges of the two light-shielding strips (6) respectively. The punching device (1) and the two cutting devices (3) are driven synchronously and are controlled by any control button (7). The two control buttons (7) are respectively set on the upper side of the two supporting molds (4). The bracket (2) includes a rectangular plate arranged in the left and right direction and multiple support units arranged side by side on its lower side; a slag discharge hole is provided in the middle of the rectangular plate and directly below the punching notch device (1), and mounting holes (8) are provided at both ends in the left and right direction; the support unit includes two legs arranged side by side in front and behind, the legs are arranged vertically and their lower ends are placed on or fixed on the worktable, the punching notch device (1) and the clamp (5) are both fixed in the middle of the rectangular plate, and two edge cutting devices (3) are respectively provided in the two mounting holes (8) and can be adjusted left and right on the rectangular plate; The trimming device (3) includes a horizontal plate (31) arranged in the front-to-back direction, a vertical plate (32) on the lower side of the horizontal plate (31), a trimming mold (33) in the middle of the upper side of the horizontal plate (31), a trimming cylinder (34) on the vertical plate (32), two L-shaped mold holes on the trimming mold (33), a U-shaped block (35) directly below the trimming mold (33), and a cutting blade arranged in the front-to-back direction on the U-shaped block (35); the horizontal plate (31) is horizontally arranged, and its front... The rear two ends are located on the front and rear sides of the mounting hole (8) and can be adjusted left and right on the rectangular plate. The upper edge of the plate has a strip hole in the front and rear direction. The upright plate (32) is set in the front and rear direction and is set vertically. It is located on the left or right side of the strip hole. The U-shaped block (35) is set in the front and rear direction and is located in the mounting hole (8). Its two arms are located at the front and rear ends of the strip hole respectively and can move up and down. The edge-cutting cylinder (34) is set vertically. The upper end of its telescopic rod is fixedly connected to the bottom of the U-shaped block (35). The edge-cutting mold (33) is set in the left and right direction and is located in the groove of the U-shaped block (35). The upper edge of the mold has a slit for the cutter to pass through in the front and rear direction. The top of the mold and the end away from the supporting mold (4) has a stepped notch. The two L-shaped mold holes are arranged side by side and opposite to each other. The L-shaped mold holes are arranged in the left and right direction and are L-shaped holes that cooperate with the light-blocking strip (6). The stepped notch has two second L-shaped grooves (36) arranged side by side. Two second L-shaped grooves (36) are arranged opposite to each other, which cooperate and connect with the L-shaped mold holes on the corresponding sides. They are L-shaped grooves that cooperate with the light-shielding strip (6). The cutter is located below the light-shielding strip (6), which is arranged vertically. Its front and rear ends are respectively fixed on the two arms of the U-shaped block (35), and its middle part passes through the strip. The top of the strip is flush with the top of the L-shaped mold hole. When the edge-cutting cylinder (34) extends, the cutter rests against the top of the strip to achieve edge cutting.

2. The processing fixture for the light-shielding strip according to claim 1, characterized in that, The support mold (4) includes a support plate (41) arranged in the left and right direction and two first L-shaped grooves (42) on it; the support plate (41) is fixed on the bracket (2) and is located between the cutting device (3) and the lower mold (13), and there are operation notches (43) on the front and back sides of its left and right ends; the two first L-shaped grooves (42) are located at the front and rear of the support plate (41) respectively, and are arranged side by side and opposite to each other. They are L-shaped grooves that cooperate with the light-shielding strip (6); the operation notch (43) allows the light-shielding strip (6) to be exposed, and its length in the left and right direction is 2-4cm; the control button (7) is located on the upper side of the support plate (41) and is located between the two first L-shaped grooves (42).

3. The processing fixture for the light-shielding strip according to claim 2, characterized in that, The bracket (2) is placed on the workbench and is formed by splicing and fixing three sub-brackets from left to right. The punching notch device (1) and the clamp (5) are located on the middle sub-bracket, and the two edge cutting devices (3) are located on the sub-brackets at both ends. The sub-brackets at both ends can be replaced to adapt to products of different lengths. The support mold (4) is formed by splicing and fixing two sub-molds from left to right. One sub-mold closer to the punching notch device (1) is longer than the other sub-mold and is fixed on the bracket (2). It is equipped with control buttons (7). The other sub-mold is detachably located on the bracket (2) and can be replaced to adapt to products of different lengths.

4. The processing fixture for the light-shielding strip according to claim 1, characterized in that, The control button (7) is a button indicator light. A sensor for detecting whether the light-shielding strip (6) is inserted is provided on the side of the L-shaped mold hole near the support mold (4). When the light-shielding strip (6) is inserted into all four L-shaped mold holes, the control button (7) lights up.

5. The processing fixture for the light-shielding strip according to claim 2, characterized in that, The lower die frame (12) is fixed on the bracket (2); the portal bracket (10) is arranged in the left-right direction, and its vertical beam has clearance notches on both the front and rear sides for the passage of the light-shielding rubber strip (6), which are located on the lower die frame (12); the punching cylinder (16) is arranged vertically on the top beam of the portal bracket (10); the lower die (13) is arranged in the left-right direction on the lower die frame (12), and it is located directly below the portal bracket (10), with an elastic buffer block (17) in its middle part and directly below the punching die (15). The upper part of the front and rear sides is provided with L-shaped support surfaces, and the front and rear sides of the elastic buffer block (17) are provided with slag discharge holes that match the notch to be processed; the upper mold (14) is arranged in the left and right direction, and is located directly above the lower mold (13). The middle part is provided with a through hole for the punching die (15) to pass through, and it can move up and down. Its front and rear ends are respectively located directly above the two light-shielding rubber strips (6), and four guide rods (18) are provided on its upper side; the upper mold frame (11) is located directly above the upper mold (14), and is located at the door The support (10) is located directly below the upper die (14), and can move up and down. Its upper middle part is fixedly connected to the lower end of the telescopic rod of the punching cylinder (16). Four guide rods (18) are respectively set on the four corners of the upper die (14) and surround the punching die (15). The guide rods (18) are vertically arranged, and their upper parts are slidably set on the upper die frame (11). The upper end of the guide rod is provided with a limiting protrusion, and a spring (19) is sleeved on it. The limiting protrusion abuts against the upper side of the upper die frame (11), and the spring (19) is located between the upper die frame (11) and the upper die frame (15). Between the upper mold (14); the punching mold (15) is vertically arranged and fixed in the lower middle part of the upper mold frame (11). It is located directly above the elastic buffer block (17), and its lower end is located in the through hole of the upper mold (14). Its front and rear sides are located directly above the two light-shielding rubber strips (6) and its shape matches the shape of the notch to be processed; the L-shaped support surface is arranged in the left and right direction and matches the light-shielding rubber strip (6). The L-shaped support surface, L-shaped mold hole, first L-shaped groove (42) and second L-shaped groove (36) on the corresponding side are flush.

6. The processing fixture for the light-shielding strip according to claim 5, characterized in that, The upper mold frame (11) and the upper mold (14) are both rectangular plate structures; the punching die (15) is a rectangular column structure arranged in the left and right directions, with rounded corners at its four corners and arc-shaped protrusions on its front and rear sides to match the notch to be processed.

7. The processing fixture for the light-shielding strip according to claim 1, characterized in that, The clamp (5) includes a mounting base (51), a pressure plate (52) slidably mounted on the mounting base (51), and a quick clamp (53) mounted on the mounting base (51) for driving the pressure plate (52) to move back and forth. The mounting base (51) is fixed on the bracket (2) and is located in front of or behind the punching device (1). The two pressure plates (52) are located on the front and rear sides of the lower mold (13) respectively, and are used to press the vertical edges of the two light-shielding strips (6) onto the two L-shaped support surfaces of the lower mold (13) respectively. The quick clamp (53) is arranged in the front and rear direction and is located on the side of the pressure plate (52) away from the lower mold (13). Pulling the quick clamp (53) can move the pressure plate (52) away from the lower mold (13).

8. A processing method using the processing fixture for the light-shielding strip as described in claim 1, characterized in that, The method includes: two operators standing in front of and behind the workbench respectively and placing two light-shielding strips (6) in front of and behind the processing fixture respectively; the middle part of the light-shielding strip (6) is placed on the L-shaped support surface and below the upper mold (14), and it is placed in the first L-shaped groove (42) of the support mold (4), and its left and right ends are inserted into the L-shaped mold holes corresponding to the two edge-cutting devices (3) respectively and push out the edge-cutting waste from the previous time; the two operators operate the fixture (5) to clamp the two light-shielding strips (6) on the front and rear sides of the lower mold (13) respectively; after the control button (7) is lit, one of the operators presses the control button (7), and the punching notch device (1) and the two edge-cutting devices (3) are driven synchronously to realize edge cutting and punching at the same time.

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