Die-cutting machine for processing heat-conducting silica gel sheet

Abstract

The utility model discloses a die-cutting machine for processing a heat-conducting silica gel sheet, and relates to the technical field of die-cutting machines. A moving mechanism is arranged on the inner side of the supporting frame, a supporting box is arranged above the moving mechanism, the upper end of the supporting frame is fixedly connected with a die cutting air cylinder, the output end of the die cutting air cylinder penetrates through the upper side wall of the supporting frame and is fixedly connected with a die cutting abutting box, and the die cutting abutting box is provided with a plurality of die cutters. When the heat conduction silica gel sheet to be subjected to die cutting is cut, the die cutting air cylinder is used for pushing the die cutting abutting box to move downwards, and after the lower end of the die cutting abutting box abuts against the upper end of the heat conduction silica gel sheet to be subjected to die cutting, the heat conduction silica gel sheet to be subjected to die cutting is cut through cooperation of the die cutting compression spring and the die cutting knife; after die cutting is completed, the two limiting air cylinders are used for driving the limiting frame to move upwards, the limiting frame is used for driving the sliding plate to move upwards, the lower end of the die cutting knife is pulled out of the cutting position of the heat conduction silica gel sheet to be subjected to die cutting and stored in the die cutting abutting box, and then the die cutting air cylinders are used for driving the die cutting abutting box to move upwards.

Description

Technical Field

[0001] This utility model relates to the field of die-cutting machine technology, and in particular to a die-cutting machine for processing thermally conductive silicone sheets. Background Technology

[0002] Thermally conductive silicone pads are high-performance materials widely used for heat dissipation in electronic devices. They are mainly composed of a silicone matrix and thermally conductive fillers (such as alumina and boron nitride). They possess excellent thermal conductivity, insulation, flexibility, and resistance to high and low temperatures, and are commonly used to fill the gaps between electronic components and heat sinks, effectively conducting heat and improving heat dissipation efficiency.

[0003] In practical applications, thermally conductive silicone sheets often need to be cut into specific shapes and sizes (such as square, round, irregular shapes, etc.) through die-cutting processes according to the layout and heat dissipation requirements of electronic components. However, due to the high adhesiveness of the thermally conductive silicone sheets, the cut area is prone to sticking to the die-cutting machine blade during cutting, often requiring machine shutdown for cleaning, thus reducing production efficiency. Therefore, this application proposes a die-cutting machine for processing thermally conductive silicone sheets to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a die-cutting machine for processing thermally conductive silicone sheets, which solves the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a die-cutting machine for processing thermally conductive silicone sheets, comprising a worktable, a support frame fixedly connected to the upper end of the worktable, a moving mechanism provided on the inner side of the support frame, a support box provided above the moving mechanism, a die-cutting cylinder fixedly connected to the upper end of the support frame, the output end of the die-cutting cylinder penetrating through the upper side wall of the support frame and fixedly connected to a die-cutting abutment box, the die-cutting abutment box being located above the support box, a plurality of die-cutting holes being opened on the lower side wall of the die-cutting abutment box, and a die-cutting hole being provided on the inner side of the die-cutting abutment box. The device includes a sliding plate, with its front and rear ends slidably connected to the inner walls of the front and rear sides of the die-cutting contact box, respectively. Several die-cutting blades are fixedly connected to the lower end of the sliding plate, with the lower ends of the blades passing through die-cutting holes and extending to the bottom of the die-cutting contact box. Several die-cutting clamping springs are fixedly connected to the upper end of the sliding plate, with the upper ends of the springs fixedly connected to the upper inner wall of the die-cutting contact box. A negative pressure pump is fixedly connected to the right inner wall of the support frame. Several negative pressure suction holes are opened on the upper side wall of the support box, and the suction end of the negative pressure pump communicates with the support box.

[0006] Preferably, two limiting cylinders are fixedly connected to the upper end of the die-cutting abutment box, a limiting frame is provided between the sliding plate and the lower side wall of the die-cutting abutment box, the output end of the limiting cylinder passes through the upper side wall of the die-cutting abutment box and is fixedly connected to the upper end of the limiting frame, and two safety holes are opened on the upper side wall of the support frame, the safety holes are located directly above the limiting cylinders.

[0007] Preferably, two pressure rods are hinged to the rear side of the upper surface of the support box, and a lifting frame is provided above the support box. The left and right ends of the lifting frame are fixedly connected to the adjacent side walls of the left and right pressure rods, respectively.

[0008] Preferably, the left and right side walls of the support box are fixedly connected to limit frames, and each of the two limit frames is open at one adjacent end. Each of the two pressure rods has a limit slide rail away from the side wall. An abutment block is slidably connected inside the limit frame. A limit rod is fixedly connected to the end of the abutment block near the pressure rod. The end of the limit rod away from the abutment block extends into the limit slide rail. A limit slide rod is fixedly connected to the lower inner wall of the limit frame. The upper end of the limit slide rod passes through the abutment block and is fixedly connected to the upper inner wall of the limit frame. An abutment spring is sleeved on the limit slide rod. The upper end of the abutment spring is fixedly connected to the upper inner wall of the limit frame. The lower end of the abutment spring is fixedly connected to the upper end of the abutment block. The abutment block and the limit slide rod are slidably connected.

[0009] Preferably, positioning marking lines are provided on the front and rear sides and the left and right sides of the upper surface of the support box.

[0010] Preferably, the moving mechanism includes a moving frame, which is fixed on the worktable. A moving motor is fixedly connected to the rear outer wall of the moving frame, and a moving lead screw is fixedly connected to the output end of the moving motor. The front end of the moving lead screw passes through the rear side wall of the moving frame and is rotatably connected to the front inner wall of the moving frame. Two moving plates are threaded onto the moving lead screw. The left and right ends of the moving plates abut against the left and right inner walls of the moving frame, respectively. The upper end of the moving plates is fixedly connected to the lower end of the support box.

[0011] Compared with related technologies, the die-cutting machine for processing thermally conductive silicone sheets provided by this utility model has the following advantages:

[0012] 1. This utility model provides a die-cutting machine for processing thermally conductive silicone sheets. When cutting the thermally conductive silicone sheet to be die-cut, the die-cutting cylinder pushes the die-cutting abutment box downward. When the lower end of the die-cutting abutment box abuts against the upper end of the thermally conductive silicone sheet to be die-cut, the die-cutting clamping spring and the die-cutting blade work together to cut the thermally conductive silicone sheet to be die-cut. After die-cutting, two limit cylinders drive the limit frame to move upward, and the limit frame drives the sliding plate to move upward, pulling the lower end of the die-cutting blade out from the cut point of the thermally conductive silicone sheet to be die-cut and storing it in the die-cutting abutment box. Then, the die-cutting cylinder drives the die-cutting abutment box to move upward. This effectively avoids the problem of silicone sheets easily sticking to the blade and ensures production efficiency.

[0013] 2. This utility model provides a die-cutting machine for processing thermally conductive silicone sheets. The device is equipped with a negative pressure pump. With the cooperation of the negative pressure pump and the negative pressure adsorption hole on the upper side wall of the support box, the bottom release film of the lower end of the thermally conductive silicone sheet to be die-cut is fixed in position, ensuring the stability of the thermally conductive silicone sheet to be die-cut during the cutting process. It can also ensure better separation of the thermally conductive silicone sheet to be die-cut from the lower end of the die-cutting contact box and the blade when they are stuck together.

[0014] 3. This utility model provides a die-cutting machine for processing thermally conductive silicone sheets. The device has two pressure rods above the support box. The front ends of the two pressure rods are connected by a lifting frame. Limit frames are set on both sides of the pressure rods, and abutment springs are set in the limit frames. In the natural state, the abutment springs apply a downward force to the abutment blocks. The cooperation of the limit rods and the limit slide ensures that the lower end of the pressure rods is always in close contact with the upper end of the support box. The two pressure rods press the left and right ends of the bottom release film of the thermally conductive silicone sheet to be die-cut. When used in conjunction with a negative pressure pump, it ensures the stability of the thermally conductive silicone sheet during the production process and avoids positional displacement that would affect the cutting quality of the product. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention from another angle;

[0017] Figure 3 This is a schematic diagram of the limiting support mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the limiting support mechanism of this utility model from another angle;

[0019] Figure 5 This is a three-dimensional cross-sectional view of the limiting frame of this utility model;

[0020] Figure 6 This is a schematic diagram of the die-cutting blade of this utility model;

[0021] Figure 7 This is an exploded view of the die-cutting blade position of this utility model;

[0022] Figure 8 This is a three-dimensional cross-sectional view of the die-cutting abutment frame of this utility model;

[0023] Figure 9 This is a schematic diagram of the upper and lower product states of this utility model.

[0024] In the diagram: 1. Workbench; 2. Moving frame; 3. Moving motor; 4. Moving lead screw; 5. Support box; 6. Moving plate; 7. Support frame; 8. Die-cutting cylinder; 9. Die-cutting abutment box; 10. Negative pressure pump; 11. Positioning mark line; 12. Pressure rod; 13. Limiting frame; 14. Lifting frame; 15. Negative pressure adsorption hole; 16. Limiting slide; 17. Limiting slide rod; 18. Abutment block; 19. Abutment spring; 20. Safety hole; 21. Die-cutting hole; 22. Die-cutting blade; 23. Sliding plate; 24. Die-cutting clamping spring; 25. Limiting frame; 26. Limiting cylinder; 27. Bottom release film; 28. Thermal conductive silicone sheet to be die-cut; 29. ​​Limiting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example:

[0027] Please see Figures 1-9This utility model provides a technical solution: a die-cutting machine for processing thermally conductive silicone sheets, including a worktable 1, a support frame 7 fixedly connected to the upper end of the worktable 1, a moving mechanism provided on the inner side of the support frame 7, a support box 5 provided above the moving mechanism, a die-cutting cylinder 8 fixedly connected to the upper end of the support frame 7, the output end of the die-cutting cylinder 8 penetrating through the upper side wall of the support frame 7 and fixedly connected to a die-cutting abutment box 9, the die-cutting abutment box 9 being located above the support box 5, a plurality of die-cutting holes 21 being opened on the lower side wall of the die-cutting abutment box 9, a sliding plate 23 being provided on the inner side of the die-cutting abutment box 9, the front and rear ends of the sliding plate 23 being slidably connected to the front and rear inner walls of the die-cutting abutment box 9 respectively, and a fixed connection being provided at the lower end of the sliding plate 23. Several die-cutting blades 22 are provided, with their lower ends passing through the die-cutting holes 21 and extending to the bottom of the die-cutting abutment box 9. Several die-cutting clamping springs 24 are fixedly connected to the upper end of the sliding plate 23, and the upper ends of the die-cutting clamping springs 24 are fixedly connected to the upper inner wall of the die-cutting abutment box 9. A negative pressure pump 10 is fixedly connected to the right inner wall of the support frame 7. Several negative pressure adsorption holes 15 are provided on the upper side wall of the support box 5. The suction end of the negative pressure pump 10 is connected to the support box 5. With the cooperation of the negative pressure pump 10 and the negative pressure adsorption holes 15 on the upper side wall of the support box 5, the bottom release film 27 at the lower end of the die-cutting thermal conductive silicone sheet 28 is fixed in position, thereby ensuring the stability of the die-cutting thermal conductive silicone sheet 28 during the cutting process.

[0028] Two limiting cylinders 26 are fixedly connected to the upper end of the die-cutting abutment box 9. A limiting frame 25 is provided between the sliding plate 23 and the lower side wall of the die-cutting abutment box 9. The output end of the limiting cylinder 26 passes through the upper side wall of the die-cutting abutment box 9 and is fixedly connected to the upper end of the limiting frame 25. Two safety holes 20 are opened on the upper side wall of the support frame 7. The safety holes 20 are located directly above the limiting cylinders 26. The setting of the safety holes 20 avoids the limiting cylinders 26 from colliding with the upper side wall of the support frame 7 when the die-cutting abutment box 9 moves upward.

[0029] Two pressure rods 12 are hinged to the rear side of the upper surface of the support box 5. A lifting frame 14 is provided above the support box 5. The left and right ends of the lifting frame 14 are fixedly connected to the adjacent side walls of the two pressure rods 12 respectively.

[0030] Limiting frames 13 are fixedly connected to both the left and right side walls of the support box 5. Each of the two limiting frames 13 has an opening at one adjacent end. Limiting slides 16 are provided on each of the two pressure rods 12, away from the side walls. An abutment block 18 is slidably connected inside the limiting frame 13. A limiting rod 29 is fixedly connected to the end of the abutment block 18 near the pressure rod 12. The end of the limiting rod 29 away from the abutment block 18 extends into the limiting slide 16. A limiting slide rod 17 is fixedly connected to the lower inner wall of the limiting frame 13. The upper end of the limiting slide rod 17 passes through the abutment block 18 and is fixedly connected to the upper inner wall of the limiting frame 13. An abutment spring 19 is sleeved on the limiting slide rod 17. The upper end of the abutment spring 19 is fixedly connected to the upper inner wall of the limiting frame 13, and the lower end of the abutment spring 19 is fixedly connected to the upper end of the abutment block 18. The abutment block 18 and the limiting slide rod 17 are slidably connected. In this state, the abutment spring 19 applies a downward force to the abutment block 18, and the cooperation of the limiting rod 29 and the limiting slide 16 ensures that the lower end of the pressure rod 12 is always tightly fitted with the upper end of the support box 5. When the thermal conductive silicone sheet 28 to be die-cut is being die-cut, the operator lifts the lifting frame 14 with one hand. As the lifting frame 14 and the front end of the pressure rod 12 are lifted upward, the limiting rod 29 slides in the limiting slide 16, the abutment block 18 moves upward and compresses the abutment spring 19, and the thermal conductive silicone sheet 28 to be die-cut is placed on the support box 5. The thermal conductive silicone sheet 28 to be die-cut is positioned according to the positioning mark line 11. After the thermal conductive silicone sheet 28 to be die-cut is placed, the lifting frame 14 is lowered. Under the action of the abutment spring 19, the two pressure rods 12 are used to fix the position of the bottom release film 27 at the lower end of the thermal conductive silicone sheet 28 to be die-cut.

[0031] Positioning mark lines 11 are provided on the front and rear sides and the left and right sides of the upper surface of the support box 5. The positioning of the thermal conductive silicone sheet 28 to be die-cut is achieved through the four positioning mark lines 11.

[0032] The moving mechanism includes a moving frame 2, which is fixed on the worktable 1. A moving motor 3 is fixedly connected to the rear outer wall of the moving frame 2. A moving screw 4 is fixedly connected to the output end of the moving motor 3. The front end of the moving screw 4 passes through the rear wall of the moving frame 2 and is rotatably connected to the front inner wall of the moving frame 2. Two moving plates 6 are threaded onto the moving screw 4. The left and right ends of the moving plates 6 abut against the left and right inner walls of the moving frame 2, respectively. The upper end of the moving plates 6 is fixedly connected to the lower end of the support box 5. In use, the moving motor 3 and the moving screw 4 work together to move the support box 5 in the front-back direction. When the front wall of the front moving plate 6 contacts the front inner wall of the moving frame 2, the support box 5 reaches the loading and unloading position of the thermally conductive silicone sheet 28 to be die-cut. When the rear wall of the rear moving plate 6 contacts the rear inner wall of the moving frame 2, the support box 5 reaches the cutting position of the thermally conductive silicone sheet 28 to be die-cut.

[0033] Working principle: During use, the moving motor 3 drives the moving screw 4 to rotate. Through the cooperation of the moving screw 4 and the two moving plates 6, the support box 5 moves forward. When the front side wall of the front moving plate 6 contacts the front inner wall of the moving frame 2, it stops. The operator lifts the lifting frame 14 with one hand. As the lifting frame 14 and the front end of the pressure rod 12 are lifted upward, the limiting rod 29 slides in the limiting slide 16. The abutment block 18 moves upward and compresses the abutment spring 19, placing the heat-conducting silicone sheet 28 to be die-cut into the support box. 5. Position the die-cut thermal conductive silicone sheet 28 according to the positioning mark line 11. After placing the die-cut thermal conductive silicone sheet 28, lower the lifting frame 14. Under the action of the abutment spring 19, use the two pressure rods 12 to fix the position of the bottom release film 27 at the lower end of the die-cut thermal conductive silicone sheet 28. With the cooperation of the moving motor 3 and the moving lead screw 4, move the support box 5 backward. When the rear side wall of the rear moving plate 6 contacts the rear inner wall of the moving frame 2, the die-cut thermal conductive silicone sheet 28 is in the die-cutting position. Directly below the abutment box 9; with the cooperation of the negative pressure pump 10 and the negative pressure adsorption hole 15 on the upper side wall of the support box 5, the bottom release film 27 of the lower end of the die-cut thermal conductive silicone sheet 28 is fixed in position, thereby ensuring the stability of the die-cut thermal conductive silicone sheet 28 during the cutting process; when the die-cut thermal conductive silicone sheet 28 is being cut, the die-cutting cylinder 8 pushes the die-cutting abutment box 9 downward. When the lower end of the die-cutting abutment box 9 abuts against the upper end of the die-cut thermal conductive silicone sheet 28, the die-cutting clamping spring 24 and the die-cutting... The die-cutting blade 22 works in conjunction with the heat-conducting silicone sheet 28 to be die-cut to achieve cutting. After die-cutting is completed, two limit cylinders 26 drive the limit frame 25 to move upward, and the limit frame 25 drives the sliding plate 23 to move upward, so that the lower end of the die-cutting blade 22 is pulled out from the cutting point of the heat-conducting silicone sheet 28 to be die-cut and stored in the die-cutting abutment box 9. Then, the die-cutting cylinder 8 drives the die-cutting abutment box 9 to move upward, thereby effectively avoiding the problem of silicone sheet easily sticking to the blade, ensuring that the equipment can work normally and thus ensuring production efficiency.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A die-cutting machine for processing thermally conductive silicone sheets, comprising a worktable (1), characterized in that: A support frame (7) is fixedly connected to the upper end of the workbench (1). A moving mechanism is provided on the inner side of the support frame (7). A support box (5) is provided above the moving mechanism. A die-cutting cylinder (8) is fixedly connected to the upper end of the support frame (7). The output end of the die-cutting cylinder (8) passes through the upper side wall of the support frame (7) and is fixedly connected to a die-cutting abutment box (9). The die-cutting abutment box (9) is located above the support box (5). Several die-cutting holes (21) are opened on the lower side wall of the die-cutting abutment box (9). A sliding plate (23) is provided on the inner side of the die-cutting abutment box (9). The front and rear ends of the sliding plate (23) are respectively connected to the die-cutting abutment box (9). The inner walls of the front and rear sides of the sliding plate (23) are slidably connected. Several die-cutting blades (22) are fixedly connected to the lower end of the sliding plate (23). The lower end of the die-cutting blades (22) passes through the die-cutting hole (21) and extends to the lower part of the die-cutting abutment box (9). Several die-cutting clamping springs (24) are fixedly connected to the upper end of the sliding plate (23). The upper end of the die-cutting clamping springs (24) is fixedly connected to the upper inner wall of the die-cutting abutment box (9). A negative pressure pump (10) is fixedly connected to the right inner wall of the support frame (7). Several negative pressure adsorption holes (15) are opened on the upper side wall of the support box (5). The suction end of the negative pressure pump (10) is connected to the support box (5).

2. The die-cutting machine for processing thermally conductive silicone sheets according to claim 1, characterized in that: Two limiting cylinders (26) are fixedly connected to the upper end of the die-cutting abutment box (9). A limiting frame (25) is provided between the sliding plate (23) and the lower side wall of the die-cutting abutment box (9). The output end of the limiting cylinder (26) passes through the upper side wall of the die-cutting abutment box (9) and is fixedly connected to the upper end of the limiting frame (25). Two safety holes (20) are opened on the upper side wall of the support frame (7). The safety holes (20) are located directly above the limiting cylinder (26).

3. The die-cutting machine for processing thermally conductive silicone sheets according to claim 1, characterized in that: Two pressure rods (12) are hinged to the rear side of the upper surface of the support box (5). A lifting frame (14) is provided above the support box (5). The left and right ends of the lifting frame (14) are fixedly connected to the adjacent side walls of the two pressure rods (12) respectively.

4. The die-cutting machine for processing thermally conductive silicone sheets according to claim 3, characterized in that: The left and right side walls of the support box (5) are fixedly connected to limit frames (13). Each of the two limit frames (13) has an opening at one end adjacent to each other. Each of the two pressure rods (12) has a limit slide (16) located away from the side wall. An abutment block (18) is slidably connected inside the limit frame (13). A limit rod (29) is fixedly connected to the end of the abutment block (18) near the pressure rod (12). The end of the limit rod (29) away from the abutment block (18) extends into the limit slide (16). A limiting slide rod (17) is fixedly connected to the lower inner wall of the limiting frame (13). The upper end of the limiting slide rod (17) passes through the abutment block (18) and is fixedly connected to the upper inner wall of the limiting frame (13). An abutment spring (19) is sleeved on the limiting slide rod (17). The upper end of the abutment spring (19) is fixedly connected to the upper inner wall of the limiting frame (13). The lower end of the abutment spring (19) is fixedly connected to the upper end of the abutment block (18). The abutment block (18) is slidably connected to the limiting slide rod (17).

5. The die-cutting machine for processing thermally conductive silicone sheets according to claim 3, characterized in that: Positioning marking lines (11) are provided on the front and rear sides and the left and right sides of the upper surface of the support box (5).

6. The die-cutting machine for processing thermally conductive silicone sheets according to claim 1, characterized in that: The moving mechanism includes a moving frame (2), which is fixed on the workbench (1). A moving motor (3) is fixedly connected to the rear outer wall of the moving frame (2). A moving screw (4) is fixedly connected to the output end of the moving motor (3). The front end of the moving screw (4) passes through the rear wall of the moving frame (2) and is rotatably connected to the front inner wall of the moving frame (2). Two moving plates (6) are threadedly connected to the moving screw (4). The left and right ends of the moving plates (6) abut against the left and right inner walls of the moving frame (2) respectively. The upper end of the moving plates (6) is fixedly connected to the lower end of the support box (5).

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