A light-weight folding chair production die-casting forming equipment

Abstract

The application relates to the technical field of die casting equipment, and discloses a light-weighted die casting forming equipment for folding chair production, which comprises a base, a die casting static mold is fixed on the base, a movable die casting dynamic mold is arranged on one side of the die casting static mold, a movable strip-shaped seat is arranged above the die casting static mold, movable soft-bristle rollers are arranged on the two sides of the strip-shaped seat, a plurality of compressed air nozzles are arranged above the soft-bristle rollers, a comb rack is fixed on the base, and a plurality of comb strips are slidably connected to the comb rack. In the application, the soft-bristle rollers can clean the debris attached to the die casting dynamic mold and the die casting static mold from top to bottom, the compressed air nozzles are matched so as to clean the residual demolding agent particles and small aluminum chips, and in the cleaning process of the die casting dynamic mold and the die casting static mold, the cleaning efficiency can be effectively improved, the cleaning quality can be ensured, and the risk of mold damage can be reduced.

Description

Technical Field

[0001] This invention relates to the field of die-casting equipment technology, specifically to a die-casting equipment for the production of lightweight folding chairs. Background Technology

[0002] The core function of a lightweight folding chair is to provide users with a portable, comfortable, and stable temporary seating solution, especially suitable for outdoor or mobile scenarios where fixed seating is lacking. Through a combination of scientific structure and lightweight materials, it reduces the burden of carrying while ensuring comfort and safety, truly achieving "relaxation upon sitting down." With its ability to be unfolded and used anytime, anywhere, it solves problems related to wet, cold, uneven, or unsanitary ground. Key structures such as the hinges and connecting seats in the lightweight folding chair primarily use cast aluminum components, balancing lightweight, strength, and corrosion resistance. These cast aluminum components are formed using die-casting equipment, a process that rapidly injects molten aluminum alloy into a mold under high pressure for instantaneous shaping.

[0003] Die-casting molds consist of a moving mold and a stationary mold. After lightweight folding chair parts are formed, the debris inside the mold after detachment needs to be cleaned, and then a release agent needs to be sprayed again. In the existing technology, the combination molds used together generally adopt a single mold independent cleaning mode, which requires each mold to be brushed, blown and sprayed in sequence. This mode is relatively cumbersome and time-consuming, reducing the processing efficiency of die-casting parts. It is also easy for the cleaning and spraying effects to be inconsistent due to differences in operation, which affects the quality of die-casting parts. Summary of the Invention

[0004] This invention provides a die-casting molding equipment for the production of lightweight folding chairs. It features a soft-bristled brush roller that cleans debris adhering to the moving and stationary die-casting molds from top to bottom. Combined with compressed air nozzles, it effectively removes residual release agent particles and fine aluminum shavings. This significantly improves cleaning efficiency, ensures cleaning quality, and reduces the risk of mold damage during the cleaning process of the moving and stationary die-casting molds. It solves the problems mentioned in the background art, such as the cumbersome and time-consuming nature of existing cleaning methods, reduced processing efficiency of die-casting parts, and inconsistencies in cleaning and coating effects due to operational differences, which affect the quality of die-casting parts.

[0005] The present invention provides the following technical solution: a die-casting molding equipment for producing lightweight folding chairs, including a base, a die-casting stationary mold fixed on the base, a movable die-casting moving mold on one side of the die-casting stationary mold, a movable strip seat above the die-casting stationary mold, movable soft brush rollers on both sides of the strip seat, a plurality of compressed air nozzles above the soft brush rollers, a comb frame fixed on the base, and a plurality of comb strips slidably connected on the comb frame;

[0006] A movable first abutment bracket is provided on one side of the strip-shaped seat, and a movable L-shaped mounting strip is provided above the compressed air nozzle. Several release agent nozzles are rotatably connected to the L-shaped mounting strip.

[0007] As an optional solution for the die-casting molding equipment for producing lightweight folding chairs according to the present invention, wherein: the die-casting moving mold is slidably connected to the machine base, and a servo hydraulic cylinder is fixed on the machine base, the piston rod of the servo hydraulic cylinder is fixedly connected to the die-casting moving mold, and a first electric push rod is fixed on the machine base, the piston rod of the first electric push rod being fixedly connected to the strip seat.

[0008] As an optional solution of the die-casting molding equipment for producing lightweight folding chairs according to the present invention, wherein: a first sliding bracket is fixed on the strip seat, one end of the soft brush roller is rotatably connected to a mounting bracket, the mounting bracket is elastically connected to the first sliding bracket through a first spring, a servo motor is fixed on the mounting bracket, the motor shaft of the servo motor is fixedly connected to one end of the soft brush roller, and a plurality of compressed air nozzles are equidistantly distributed on the mounting bracket.

[0009] As an optional solution of the die-casting molding equipment for producing lightweight folding chairs according to the present invention, wherein: the other end of the soft brush roller is rotatably connected to a first abutting wedge, the first abutting wedge is slidably connected to the strip seat, a second electric push rod is fixed on the strip seat, the piston rod of the second electric push rod is fixedly connected to the first abutting bracket, and the first abutting bracket is located above the first abutting wedge.

[0010] As an optional solution for the die-casting molding equipment for producing lightweight folding chairs according to the present invention, wherein: a second sliding bracket is fixed on the strip seat, the L-shaped mounting strip is elastically connected to the second sliding bracket through a second spring, a first abutting strip is fixed on the release agent spray head, and a second abutting bracket is abutted on the first abutting strip.

[0011] As an optional solution for the die-casting molding equipment for producing lightweight folding chairs according to the present invention, wherein: the second abutting bracket is elastically connected to the L-shaped mounting strip through a third spring, a second abutting wedge is fixed on one side of the L-shaped mounting strip, and a third abutting bracket is abutted on one end of the second abutting bracket.

[0012] As an optional solution of the die-casting molding equipment for producing lightweight folding chairs according to the present invention, wherein: the third abutment bracket is slidably connected to the L-shaped mounting strip, and an abutment rod is slidably connected to the third abutment bracket; a fourth spring is connected between the abutment rod and the third abutment bracket; and a second abutment strip is fixed to one end of the soft brush roller.

[0013] As an optional solution for the die-casting molding equipment for producing lightweight folding chairs according to the present invention, wherein: one end of the comb tooth is fixed with a connecting strip, and a fifth spring is connected between the connecting strip and the comb tooth frame.

[0014] As an optional solution for the die-casting molding equipment for producing lightweight folding chairs according to the present invention, a through groove is provided below the strip seat, and a collection box is fixed at the lower end of the strip seat, and the through groove is connected to the collection box.

[0015] As an optional solution of the die-casting molding equipment for producing lightweight folding chairs according to the present invention, wherein: a mounting block is fixed at the lower end of the first abutment bracket, a T-shaped abutment frame is slidably connected on the mounting block, a third abutment wedge is fixed on one side of the T-shaped abutment frame, and a sixth spring is connected between the T-shaped abutment frame and the mounting block.

[0016] The present invention has the following beneficial effects:

[0017] 1. In this lightweight folding chair production die-casting molding equipment, soft brush rollers set on both sides of the strip seat can extend from the inside of the strip seat to simultaneously press against the forming surfaces of the die-casting moving mold and the die-casting stationary mold. With the cooperation of the first electric push rod, the strip seat can move vertically from top to bottom. When the two soft brush rollers rotate, they can remove the debris attached to the forming surfaces of the die-casting moving mold and the die-casting stationary mold. The equipped several compressed air nozzles can move synchronously with the soft brush rollers to shorten the cleaning interval, so that the gas blown by the several compressed air nozzles can act on the die-casting moving mold and the die-casting stationary mold respectively, so that the residual mold release agent particles and fine aluminum chips can be cleaned from the deep holes, grooves and other difficult-to-wipe structural parts of the die-casting moving mold and the die-casting stationary mold, thereby improving the cleaning effect of the die-casting moving mold and the die-casting stationary mold.

[0018] During cleaning, the piston rod of the second electric push rod drives the first abutment bracket to move downward and abut against the two first abutment wedges. This causes the two soft brush rollers and several compressed air nozzles to automatically extend from the strip seat. With the cooperation of the first electric push rod, the soft brush rollers can clean the debris attached to the die-casting moving mold and die-casting stationary mold from top to bottom. With the cooperation of the compressed air nozzles, residual mold release agent particles and fine aluminum shavings are cleaned. During the cleaning process of the die-casting moving mold and die-casting stationary mold, the cleaning efficiency can be effectively improved, the cleaning quality can be guaranteed, and the risk of mold damage can be reduced.

[0019] 2. In this lightweight folding chair production die-casting molding equipment, the L-shaped mounting strip inside the strip seat facilitates the installation of the release agent nozzle. This allows the release agent nozzle to spray onto the die-casting moving mold and die-casting stationary mold after cleaning and when the strip seat moves upward, thus improving the demolding effect of the die-casting parts. The comb frame facilitates the combing out of the debris attached to the two soft brush rollers, preventing the soft brush rollers from throwing debris onto the mold and causing wear when they work again, and also improving the cleaning effect of the soft brush rollers.

[0020] After the mold is cleaned, the strip seat moves to the bottom of the mold, and the first contact bracket moves upward. On the one hand, this releases the contact with the first contact wedge, causing the two soft brush rollers to retract into the strip seat and rest against the comb frame. This prevents the two soft brush rollers from damaging the release agent coating. At the same time, when the two soft brush rollers rotate at low speed, it is also convenient to clean the attached debris. On the other hand, the upward movement of the first contact bracket makes initial contact with the second contact wedge, so that several release agent nozzles can move horizontally, thereby shortening the spraying interval and improving the spraying effect.

[0021] 3. In the die-casting molding equipment for producing lightweight folding chairs, the cooperation between the second contact bracket and the first contact strip allows the second contact strip to rotate synchronously when the soft brush roller rotates for self-cleaning. This allows the third contact bracket to move vertically when the second contact strip contacts the contact rod. With the cooperation of the first contact strip and the second contact bracket, the mold release agent nozzle can deflect left and right when spraying the mold release agent, reducing the spraying dead angle and improving the spraying quality.

[0022] The gap between the comb teeth can be adjusted by the comb teeth that slide on the comb tooth frame, which prevents debris from getting stuck on the comb teeth and allows the combed debris to fall directly into the collection box. When the first contact bracket moves upward, it can drive the T-shaped contact bracket to move synchronously. When the gap between the comb teeth needs to be adjusted, the T-shaped contact bracket can be opposite to the connecting strip. When the contact rod is contacted and moves horizontally, it can contact the third contact wedge, so that the comb teeth can reciprocate on the comb tooth frame, which facilitates the automatic cleaning of debris on the comb tooth frame. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a schematic diagram of the strip seat structure of the present invention.

[0025] Figure 3 This is a cross-sectional view of the strip seat structure of the present invention.

[0026] Figure 4 This is one of the schematic diagrams of the internal structure of the strip seat of the present invention.

[0027] Figure 5 This is the second schematic diagram of the internal structure of the strip seat of the present invention.

[0028] Figure 6 This is a schematic diagram of the first abutment support structure of the present invention.

[0029] Figure 7 This is a schematic diagram of the comb frame structure of the present invention.

[0030] Figure 8 for Figure 4 Enlarged view of point A in the middle.

[0031] In the diagram: 1. Base; 2. Die-casting stationary mold; 3. Die-casting moving mold; 4. Strip seat; 5. Soft brush roller; 6. Compressed air nozzle; 7. Comb tooth frame; 8. First contact bracket; 9. Comb tooth rack; 10. L-shaped mounting strip; 11. Release agent nozzle; 12. Servo hydraulic cylinder; 13. First electric push rod; 14. First sliding bracket; 15. Mounting bracket; 16. First spring; 17. Servo motor; 18. First contact wedge; 19. Second electric... 20. Push rod; 21. Second sliding bracket; 22. Second spring; 23. First abutting strip; 24. Second abutting bracket; 25. Third abutting bracket; 26. Abutting rod; 27. Fourth spring; 28. Second abutting wedge; 29. ​​Connecting strip; 30. Fifth spring; 31. Through groove; 32. Collection box; 33. Mounting block; 34. T-shaped abutting frame; 35. Third abutting wedge; 36. Sixth spring; 37. Second abutting strip. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1, please refer to Figures 1 to 8 A die-casting molding equipment for producing lightweight folding chairs includes a base 1, a die-casting stationary mold 2 fixed on the base 1, a movable die-casting moving mold 3 on one side of the die-casting stationary mold 2, a movable strip seat 4 above the die-casting stationary mold 2, movable soft brush rollers 5 on both sides of the strip seat 4, a plurality of compressed air nozzles 6 above the soft brush rollers 5, a comb frame 7 fixed on the base 1, and a plurality of comb strips 9 slidably connected to the comb frame 7.

[0034] A movable first abutment bracket 8 is provided on one side of the strip seat 4, and a movable L-shaped mounting strip 10 is provided above the compressed air nozzle 6. Several release agent nozzles 11 are rotatably connected to the L-shaped mounting strip 10.

[0035] The die-casting moving mold 3 is slidably connected to the machine base 1, and a servo hydraulic cylinder 12 is fixed on the machine base 1. The piston rod of the servo hydraulic cylinder 12 is fixedly connected to the die-casting moving mold 3. A first electric push rod 13 is fixed on the machine base 1, and the piston rod of the first electric push rod 13 is fixedly connected to the strip seat 4.

[0036] A first sliding bracket 14 is fixed on the strip seat 4. One end of the soft brush roller 5 is rotatably connected to the mounting bracket 15. The mounting bracket 15 is elastically connected to the first sliding bracket 14 through the first spring 16. A servo motor 17 is fixed on the mounting bracket 15. The motor shaft of the servo motor 17 is fixedly connected to one end of the soft brush roller 5. Several compressed air nozzles 6 are equidistantly distributed on the mounting bracket 15.

[0037] The other end of the soft brush roller 5 is rotatably connected to a first abutting wedge 18. The first abutting wedge 18 is slidably connected to the strip seat 4. A second electric push rod 19 is fixed on the strip seat 4. The piston rod of the second electric push rod 19 is fixedly connected to the first abutting bracket 8, and the first abutting bracket 8 is located above the first abutting wedge 18.

[0038] refer to Figures 1 to 4 When using the die-casting molding equipment, the piston rod extension length of the servo hydraulic cylinder 12 is adjusted to cause the die-casting moving mold 3 to slide on the machine base 1 until the die-casting moving mold 3 and the die-casting stationary mold 2 fixed on one side of the machine base 1 are closed. Then, molten aluminum is injected into the mold cavity. After the lightweight folding chair parts are formed, the piston rod of the servo hydraulic cylinder 12 retracts, causing the die-casting moving mold 3 to move to a predetermined position and separate from the die-casting stationary mold 2 so that the formed parts can be removed. After the parts are removed, the first electric push rod 13 drives the strip seat 4 to move from top to bottom. The piston rod of the second electric push rod 19 extends downward, causing the first abutting bracket 8 to abut against the two first abutting wedges 18, causing the mounting bracket 15, which is rotatably connected to one end of the two soft brush rollers 5, to slide synchronously on the first sliding bracket 14. The first spring 16 stores force so that the two soft brush rollers 5 extend out to the outside of the strip seat 4 at the same time. With the cooperation of the servo motor 17, the soft brush rollers 5 are driven to rotate. As the strip seat 4 moves down, the rotating soft brush rollers 5 come into contact with the forming surfaces of the die-casting moving mold 3 and the die-casting stationary mold 2 to remove debris.

[0039] Simultaneously, several compressed air nozzles 6 on the mounting bracket 15 move synchronously with the soft brush roller 5, which can shorten the cleaning interval and improve the cleaning effect. After the soft brush roller 5 has brushed away the debris, the compressed air nozzles 6 are connected to the air supply equipment so that compressed air can be blown onto the molding surfaces of the die-casting moving mold 3 and die-casting stationary mold 2 after the debris has been brushed away. This allows the residual mold release agent particles and fine aluminum shavings to be cleaned from the deep holes, grooves and other hard-to-wipe structural parts of the die-casting moving mold 3 and die-casting stationary mold 2, thereby improving the cleaning effect of the die-casting moving mold 3 and die-casting stationary mold 2, as well as the die-casting quality of the lightweight folding chair parts, and reducing the risk of mold damage.

[0040] Example 2 is an improvement upon Example 1. For details, please refer to [link / reference]. Figures 1 to 8 A second sliding bracket 20 is fixed on the strip seat 4. The L-shaped mounting strip 10 is elastically connected to the second sliding bracket 20 through the second spring 21. A first abutting strip 22 is fixed on the release agent nozzle 11. A second abutting bracket 23 abuts on the first abutting strip 22.

[0041] The second abutment bracket 23 is elastically connected to the L-shaped mounting strip 10 via the third spring 24. A second abutment wedge 28 is fixed on one side of the L-shaped mounting strip 10, and a third abutment bracket 25 is abutted on one end of the second abutment bracket 23.

[0042] The third abutment bracket 25 is slidably connected to the L-shaped mounting strip 10, and an abutment rod 26 is slidably connected to the third abutment bracket 25. A fourth spring 27 is connected between the abutment rod 26 and the third abutment bracket 25. A second abutment strip 37 is fixed to one end of the soft brush roller 5.

[0043] refer to Figures 1 to 8After the die-casting moving mold 3 and die-casting stationary mold 2 are cleaned, a release agent needs to be sprayed onto them to facilitate demolding of the next molded part. When the piston rod of the first electric push rod 13 moves the strip seat 4 down to below the die-casting moving mold 3 and die-casting stationary mold 2, the die-casting moving mold 3 and die-casting stationary mold 2 are cleaned. This causes the piston rod of the second electric push rod 19 to retract, moving the first abutting bracket 8 upward. This releases the first abutting bracket 8 from the first abutting wedge block 18, allowing the soft brush roller 5 and several compressed air nozzles 6 to automatically retract into the strip seat 4, avoiding contact with the cleaned surfaces of the die-casting moving mold 3 and die-casting stationary mold 2. Contact affects cleaning quality. Secondly, it avoids damage to the release agent coating. When the first contact bracket 8 continues to move upward, it can achieve the purpose of contacting the two second contact wedges 28, causing the two L-shaped mounting strips 10 to slide on the second sliding bracket 20. The second spring 21 stores force so that the release agent nozzles 11 installed on the two L-shaped mounting strips 10 can approach the forming surfaces of the die-casting moving mold 3 and the die-casting stationary mold 2 respectively, shortening the spraying distance and improving the spraying effect. The release agent nozzles 11 are connected to the equipment for conveying the release agent. When the strip seat 4 moves upward and resets, the release agent nozzles 11 automatically spray the release agent onto the forming surfaces of the die-casting moving mold 3 and the die-casting stationary mold 2.

[0044] When the two soft brush rollers 5 retract into the strip seat 4, they automatically abut against the comb frame 7. As the soft brush rollers 5 rotate at low speed, the comb frame 7 easily combs away the debris adhering to them, improving the cleaning effect of the two soft brush rollers 5 on the die-casting moving mold 3 and die-casting stationary mold 2, and preventing damage to these molds from the adhering debris. When the soft brush rollers 5 move, they drive the second abutment strip 37 fixed at the end to move synchronously. Simultaneously, the L-shaped mounting strip 10 moves, driving the third abutment bracket 25 and the abutment rod 26 on the third abutment bracket 25 to move synchronously. After the third abutment bracket 25 and the soft brush rollers 5 have moved into their respective positions, the second abutment strip 37... 7 can rotate synchronously with the soft brush roller 5. Since the elastic force of the fourth spring 27 is greater than that of the third spring 24, when the second contact strip 37 contacts the contact rod 26, it causes the contact rod 26 to drag the third contact bracket 25 to slide downward on the L-shaped mounting strip 10. The third contact bracket 25 contacts the second contact bracket 23, causing the second contact bracket 23 to slide on the L-shaped mounting strip 10. The third spring 24 stores force so that the second contact bracket 23 contacts the first contact strip 22 on the release agent nozzle 11, causing the release agent nozzle 11 to automatically deflect left and right when spraying, so that the release agent can be evenly sprayed onto the forming surfaces of the die-casting moving mold 3 and the die-casting stationary mold 2.

[0045] Example 3 is an improvement upon Example 2. For details, please refer to [link / reference]. Figures 1 to 8One end of the comb tooth 9 is fixed with a connecting strip 29, and a fifth spring 30 is connected between the connecting strip 29 and the comb tooth frame 7.

[0046] A through groove 31 is provided below the strip seat 4, and a collection box 32 is fixed at the lower end of the strip seat 4. The through groove 31 is connected to the collection box 32.

[0047] The lower end of the first contact bracket 8 is fixed with a mounting block 33. A T-shaped contact bracket 34 is slidably connected to the mounting block 33. A third contact wedge 35 is fixed to one side of the T-shaped contact bracket 34. A sixth spring 36 is connected between the T-shaped contact bracket 34 and the mounting block 33.

[0048] refer to Figures 1 to 7 When the comb frame 7 combs the debris on the soft brush roller 5, some large debris falls onto the comb frame 7, and some debris gets stuck in the gap between the comb teeth. This will affect the combing effect on the soft brush roller 5. The gap between the comb frame 7 and the comb tooth strip 9, which are slidably connected on the comb frame 7, can be adjusted to prevent debris from getting stuck on the comb tooth strip 9. At the same time, the combed debris can fall directly into the collection box 32.

[0049] When the first abutting bracket 8 moves upward, it abuts against the second abutting wedge 28 on the L-shaped mounting strip 10, which can drive the T-shaped abutting frame 34 to move synchronously. When it is necessary to adjust the gap size of the comb frame 7, the first abutting bracket 8 continues to move upward, causing the T-shaped abutting frame 34 to be opposite to the two connecting strips 29. At this time, the third abutting wedge 35 on the T-shaped abutting frame 34 is opposite to one of the abutting rods 26. When the abutting rod 26 drags the third abutting bracket 25 downward and cannot move it, the second abutting strip 37 continues to abut against the abutting rod 26. When the contact rod 26 abuts, it slides on the third contact bracket 25. The fourth spring 27 stores energy. At this time, one end of the moving contact rod 26 abuts against the third contact wedge 35, causing the T-shaped contact frame 34 to slide on the mounting block 33. The fifth spring 30 stores energy, and the T-shaped contact frame 34 abuts against the connecting strip 29, causing the comb bar 9 to slide on the comb frame 7. The sixth spring 36 can automatically adjust the gap of the comb frame 7, making it convenient to automatically clean the debris on the comb frame 7.

[0050] The servo hydraulic cylinder 12, the first electric push rod 13, the servo motor 17, and the second electric push rod 19 are all electrically connected to the controller via wires.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A die-casting molding equipment for producing lightweight folding chairs, comprising a base (1), characterized in that: A die-casting stationary mold (2) is fixed on the base (1). A movable die-casting moving mold (3) is provided on one side of the die-casting stationary mold (2). A movable strip seat (4) is provided above the die-casting stationary mold (2). Movable soft brush rollers (5) are provided on both sides of the strip seat (4). Several compressed air nozzles (6) are provided above the soft brush rollers (5). A comb frame (7) is fixed on the base (1). Several comb strips (9) are slidably connected on the comb frame (7). The strip seat (4) has a movable first abutment bracket (8) on one side, and a movable L-shaped mounting strip (10) is provided above the compressed air nozzle (6). Several release agent nozzles (11) are rotatably connected to the L-shaped mounting strip (10).

2. The die-casting molding equipment for producing lightweight folding chairs according to claim 1, characterized in that: The die-casting moving mold (3) is slidably connected to the machine base (1), and a servo hydraulic cylinder (12) is fixed on the machine base (1). The piston rod of the servo hydraulic cylinder (12) is fixedly connected to the die-casting moving mold (3). A first electric push rod (13) is fixed on the machine base (1), and the piston rod of the first electric push rod (13) is fixedly connected to the strip seat (4).

3. The die-casting molding equipment for producing lightweight folding chairs according to claim 1, characterized in that: A first sliding bracket (14) is fixed on the strip seat (4). One end of the soft brush roller (5) is rotatably connected to a mounting bracket (15). The mounting bracket (15) is elastically connected to the first sliding bracket (14) through a first spring (16). A servo motor (17) is fixed on the mounting bracket (15). The motor shaft of the servo motor (17) is fixedly connected to one end of the soft brush roller (5). Several compressed air nozzles (6) are equidistantly distributed on the mounting bracket (15).

4. The die-casting molding equipment for producing lightweight folding chairs according to claim 1, characterized in that: The other end of the soft brush roller (5) is rotatably connected to a first abutting wedge (18), the first abutting wedge (18) is slidably connected to the strip seat (4), the strip seat (4) is fixed with a second electric push rod (19), the piston rod of the second electric push rod (19) is fixedly connected to the first abutting bracket (8), and the first abutting bracket (8) is located above the first abutting wedge (18).

5. The die-casting molding equipment for producing lightweight folding chairs according to claim 1, characterized in that: The strip seat (4) is fixed with a second sliding bracket (20), the L-shaped mounting strip (10) is elastically connected to the second sliding bracket (20) by a second spring (21), the release agent nozzle (11) is fixed with a first abutting strip (22), and the first abutting strip (22) abuts against a second abutting bracket (23).

6. The die-casting molding equipment for producing lightweight folding chairs according to claim 5, characterized in that: The second abutting bracket (23) is elastically connected to the L-shaped mounting strip (10) via a third spring (24). A second abutting wedge (28) is fixed on one side of the L-shaped mounting strip (10), and a third abutting bracket (25) is abutted on one end of the second abutting bracket (23).

7. The die-casting molding equipment for producing lightweight folding chairs according to claim 6, characterized in that: The third abutment bracket (25) is slidably connected to the L-shaped mounting strip (10), and an abutment rod (26) is slidably connected to the third abutment bracket (25). A fourth spring (27) is connected between the abutment rod (26) and the third abutment bracket (25). A second abutment strip (37) is fixed to one end of the soft brush roller (5).

8. The die-casting molding equipment for producing lightweight folding chairs according to claim 1, characterized in that: One end of the comb tooth (9) is fixed with a connecting strip (29), and a fifth spring (30) is connected between the connecting strip (29) and the comb tooth frame (7).

9. The die-casting molding equipment for producing lightweight folding chairs according to claim 1, characterized in that: A through groove (31) is provided below the strip seat (4), and a collection box (32) is fixed at the lower end of the strip seat (4). The through groove (31) is connected to the collection box (32).

10. The die-casting molding equipment for producing lightweight folding chairs according to claim 1, characterized in that: The lower end of the first abutment bracket (8) is fixed with an installation block (33), and a T-shaped abutment bracket (34) is slidably connected on the installation block (33). A third abutment wedge (35) is fixed on one side of the T-shaped abutment bracket (34), and a sixth spring (36) is connected between the T-shaped abutment bracket (34) and the installation block (33).

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