Machining device and method for heat preservation pipeline of vehicle-mounted refrigerator

Abstract

The invention relates to the technical field of mechanical manufacturing and automatic equipment, and discloses a vehicle-mounted refrigerator heat preservation pipeline machining device which comprises an upper mold and a lower mold, heat preservation pipes in the upper mold and the lower mold are manufactured through integral foaming, and an unfolding assembly is arranged above the upper mold and comprises a second supporting frame. And the second supporting frame is arranged above the upper mold, one side of the outer wall of the second supporting frame is fixedly connected with a first connecting block, the other side of the outer wall of the second supporting frame is fixedly connected with a second connecting block, and a limiting hole is formed in the outer side wall of the second connecting block. A second supporting frame is driven by a second air cylinder to reset to the position above the mold, and a stable rigid limiting frame is constructed by matching with the principle that a first air cylinder and a third air cylinder are inserted into a first connecting block and a limiting hole correspondingly for double locking; the effects that the foaming pressure is effectively resisted on the premise that the mold is not directly pressed, and the integral forming size accuracy of the heat preservation pipeline is ensured are achieved.

Description

Technical Field

[0001] This invention relates to the field of mechanical manufacturing and automation equipment technology, specifically to a processing device and method for insulated pipelines of vehicle-mounted refrigerators. Background Technology

[0002] As a mobile refrigeration device, the internal piping system of a vehicle-mounted refrigerator is mainly responsible for the transport of refrigerant and heat exchange. To ensure refrigeration efficiency and reduce heat loss, an insulation layer made of solidified foam material is usually wrapped around the outside of the piping. This processing device is a specialized piece of equipment used for injection molding, foaming, and shaping of the aforementioned vehicle-mounted refrigerator insulation piping.

[0003] In existing technical solutions, the processing of insulated pipelines mainly relies on mold forming technology. Its common mechanical structure typically includes a base, a lower mold mounted on the base, and a detachable upper mold. The working principle often involves using a vertical press or manual clamps to maintain the mold in a closed state: the operator places the pipeline to be processed into the lower mold, closes the upper mold, and then uses the main shaft of a hydraulic press to vertically press down on the upper surface of the upper mold, or uses multiple spiral clamps or quick-release tongs around the mold to lock the upper and lower molds, thereby creating a closed cavity for the foaming material to react and form.

[0004] However, the aforementioned existing technologies have significant drawbacks in practical applications. Because the insulation material (such as polyurethane foam) undergoes a violent chemical reaction and rapidly expands after injection into the mold cavity, it generates enormous expansion pressure inside the mold. Existing methods relying solely on vertical pressure or edge clamps often fail to provide sufficient and uniform rigid support in all directions. Especially when the internal foaming expansion force reaches its peak instantaneously, it easily overcomes external clamping forces, causing the upper mold to be forcibly lifted upwards or experience slight horizontal displacement (i.e., "mold breakage"). Once this displacement occurs, it not only causes material overflow and flash at the mold parting line but also directly results in uneven wall thickness of the pipeline insulation layer and out-of-tolerance product dimensions, severely affecting subsequent assembly accuracy and the product's insulation performance. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a processing device for insulated pipelines in vehicle refrigerators, which solves the problems of mold displacement due to foaming expansion force affecting accuracy, clamping mechanism interference with feed pipe and hindering manual mold disassembly, and difficulty in demolding and easy deformation of deep-cavity, slender products.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a vehicle refrigerator insulation pipeline processing device, comprising an upper mold and a lower mold, wherein the insulation pipe inside the upper mold and the lower mold is integrally foamed.

[0007] Preferably, an unfolding component is provided above the upper mold;

[0008] The unfolding assembly includes a second support frame, which is disposed above the upper mold. A first connecting block is fixedly connected to one side of the outer wall of the second support frame, and a second connecting block is fixedly connected to the other side of the outer wall of the second support frame. A limit hole is formed on the outer wall of the second connecting block. A fixing member is provided on the lower side of the outer wall of the lower mold. A first support frame is fixedly connected to the lower surface of the fixing member. A second support platform is fixedly connected to one side of the outer wall of the first support frame. A first support platform is fixedly connected to the upper surface of the first support frame on the side of the second support platform. A third cylinder is fixedly connected to one side of the outer wall of the first support platform. The output end of the third cylinder is slidably connected inside the limit hole. An anti-detachment block is provided on one side of the outer wall of the upper mold and the lower mold. A fixing bolt is threadedly connected to the inner wall of the anti-detachment block. A first cylinder is fixedly connected to one side of the outer wall of the first support frame, and a second cylinder is fixedly connected to the other side of the outer wall of the first support frame. The output end of the second cylinder is fixedly connected to the lower surface of the second support frame. A demolding assembly is provided inside the fixing member. A rotating shaft is fixedly connected to the inner wall of the first support platform. A feed pipe is fixedly connected to the upper surface of the upper mold.

[0009] Preferably, the demolding assembly includes a fourth cylinder, which is disposed inside the fixing member. A protective cover is fixedly connected to the upper surface of the fixing member, and a first magnet and a second magnet are fixedly connected to the output end of the fourth cylinder.

[0010] Preferably, the inner wall of the first magnet is slidably connected to the outer wall of the second magnet, and the first magnet and the second magnet are used to fix the product after injection molding.

[0011] Preferably, the lower surface of the upper mold is slidably connected to the upper surface of the lower mold, and the second support frame is used to limit the position of the upper mold.

[0012] Preferably, the outer wall of the fixing bolt is threadedly connected to the inner wall of the upper mold and the lower mold, and two fixing bolts are provided.

[0013] Preferably, the output end of the third cylinder passes through the first support platform and is connected to the limiting hole, and the third cylinder is used to lock the second connecting block.

[0014] Preferably, the outer wall of the rotating shaft is rotatably connected to the inner wall of the second connecting block, and the outer wall of the fourth cylinder is provided with a protective cover inside.

[0015] Preferably, the output end of the first cylinder passes through the second support platform and is disconnected from the first connecting block, and the first cylinder is used to fix or release the first connecting block.

[0016] Preferably, it includes the following steps:

[0017] Before processing, unscrew the fixing bolts between the anti-detachment block and the inner wall of the mold to release the transport lock, put the pipeline to be processed into the lower mold installed on the fixing parts and the first support frame, and fasten the upper mold with the feed pipe fixed on the lower mold to complete the mold closing;

[0018] The second cylinder on the outer wall of the first support frame is activated, and its output end pushes the unfolding component, i.e., the second support frame, to rotate around the rotating shaft inside the first support platform, resetting it to above the upper mold and the feed pipe. At this time, the second support frame does not press down, but acts as a rigid frame to spatially limit the upper mold.

[0019] After the second support frame is in place, the third cylinder on the outer wall of the first support platform is activated, and its output end penetrates the platform body and is inserted into the limiting hole on the side wall of the second connecting block. At the same time, the first cylinder on the other side of the first support frame is activated, and its output end penetrates the second support platform and is connected and fixed to the first connecting block. The second support frame is locked by the cooperation of the two cylinders.

[0020] With the mold closed and the external support locked, the injection molding machine connects to the feed pipe fixed on the upper surface of the upper mold. The raw material is injected into the cavity formed by the upper mold and the lower mold through the feed pipe for integral foaming and molding. The foaming expansion force is borne by the restricted upper mold and the externally locked second support frame.

[0021] After processing is completed, the first and third cylinders retract, releasing the lock on the first connecting block and the limiting hole. The second cylinder then activates, causing the second support frame to rotate in the opposite direction around the pivot and unfold, avoiding the upper mold and the feed pipe, thus exposing the operating space.

[0022] The demolding assembly inside the protective cover of the fixing component is activated. The output end of the fourth cylinder pushes the second magnet and the slidingly connected first magnet upward, using magnetic force to attract and lift the product, separating it from the lower mold, and completing the part removal.

[0023] This invention provides a processing device for the insulation pipeline of a vehicle-mounted refrigerator. It has the following beneficial effects:

[0024] 1. This invention uses a second cylinder to drive the second support frame to return to the top of the mold, and works in conjunction with the first and third cylinders to insert into the first connecting block and the limiting hole respectively for double locking. This constructs a stable rigid limiting frame, which solves the problem that the upper mold is prone to displacement or breakage due to the intense internal expansion force during injection molding foaming. It achieves the effect of effectively resisting foaming pressure and ensuring the dimensional accuracy of the integral molding of the insulation pipeline without directly pressing the mold.

[0025] 2. This invention utilizes the principle that the second cylinder drives the second support frame to rotate in the opposite direction around the rotating shaft and unfold, so that the support completely avoids the upper mold and the feed pipe. This solves the problem that the traditional pressing mechanism, which is fixed above the mold, is prone to interference with the protruding feed pipe and hinders manual disassembly of the upper mold. It achieves the effect of exposing the complete operating space when not in operation, making it convenient for operators to quickly and manually disassemble the upper mold and maintain the feed pipe.

[0026] 3. This invention solves the problem of difficult demolding of slender insulation pipelines in deep cavity molds by simply mechanically ejecting or manually grasping them, by activating the fourth cylinder to drive the first and second magnetic magnets to move upwards. It utilizes magnetic force to attract the product and combines it with the principle of mechanical lifting. This achieves the effect of automatically and smoothly attracting and separating the product from the lower mold, reducing the difficulty of manual removal, and preventing product deformation. Attached Figure Description

[0027] Figure 1 This is a perspective view of a vehicle-mounted refrigerator insulation pipeline processing device according to the present invention;

[0028] Figure 2 This is a schematic diagram of the feed pipe section of a vehicle-mounted refrigerator insulation pipeline processing device according to the present invention;

[0029] Figure 3 This is a schematic diagram of the upper mold portion of a vehicle-mounted refrigerator insulation pipeline processing device according to the present invention;

[0030] Figure 4 This is a schematic diagram of the anti-detachment block structure of a vehicle-mounted refrigerator insulation pipeline processing device according to the present invention;

[0031] Figure 5 This is a schematic diagram of the fixing bolt part of the vehicle-mounted refrigerator insulation pipeline processing device of the present invention;

[0032] Figure 6 This is a schematic diagram of the first magnet part of a vehicle-mounted refrigerator insulation pipeline processing device according to the present invention.

[0033] Figure 7 This is a schematic diagram of the fixing component of a vehicle-mounted refrigerator insulation pipeline processing device according to the present invention;

[0034] Figure 8 This is a schematic diagram of the second magnet part of a vehicle-mounted refrigerator insulation pipeline processing device according to the present invention.

[0035] The components are as follows: 1. First support frame; 2. First cylinder; 3. First connecting block; 4. Fixing component; 5. Feed pipe; 6. Second support frame; 7. Second cylinder; 8. Third cylinder; 9. Upper mold; 10. Lower mold; 11. Rotating shaft; 12. Limiting hole; 13. First support platform; 14. Second support platform; 15. Protective cover; 16. Anti-detachment block; 17. Fixing bolt; 18. First magnet; 19. Fourth cylinder; 20. Second magnet; 21. Second connecting block. Detailed Implementation

[0036] 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.

[0037] Example:

[0038] Please see the appendix Figure 1 - Appendix Figure 8 This invention provides a vehicle refrigerator insulation pipeline processing device, including an upper mold 9 and a lower mold 10. The lower surface of the upper mold 9 is slidably connected to the upper surface of the lower mold 10. After the two are engaged, they form a closed injection molding cavity. The pipeline to be processed is pre-placed in the cavity. By injecting foaming material into the cavity, the material undergoes a chemical reaction and expands in the mold, eventually wrapping the pipeline. The finished product with an insulation layer is made by integral foaming. In order to cope with the internal expansion pressure generated during the foaming process, this device does not adopt the traditional direct pressing method, but designs an external limiting structure.

[0039] Please see the appendix Figure 1 - Appendix Figure 7 An unfolding component is provided above the upper mold 9;

[0040] The unfolding assembly includes a second support frame 6, which is positioned above the upper mold 9. As the main load-bearing component, the second support frame 6 has been structurally reinforced to prevent upward displacement of the upper mold 9 under foaming pressure through spatial limiting without contacting its surface. A first connecting block 3 is fixedly connected to one side of the outer wall of the second support frame 6, and a second connecting block 21 is fixedly connected to the other side. Limiting holes 12 are formed on the outer wall of the second connecting block 21. The first connecting block 3 and the second connecting block 21 are located at opposite ends of the support, serving as locking media between the moving parts and the fixed base. The limiting holes 12 are designed to cooperate with a pin-type locking mechanism to ensure that the support does not move radially under stress. A fixing member 4 is provided on the lower side of the outer wall of the lower mold 10. The first support frame 1 is fixedly connected to the lower surface of the fixing member 4. The fixing member 4 serves as a connecting element, providing a stable installation platform for the lower mold 10 and transferring the weight of the entire device to the ground through the first support frame 1, ensuring the overall stability of the equipment. A second support platform 14 is fixedly connected to one side of the wall. A first support platform 13 is fixedly connected to the upper surface of the first support frame 1 on the side away from the second support platform 14. The second support platform 14 and the first support platform 13 are located on both sides of the mold, forming the base of the external support frame, providing mounting positions for the locking cylinders on the left and right sides respectively, ensuring that the force distribution is even. A third cylinder 8 is fixedly connected to one side of the outer wall of the first support platform 13. The output end of the third cylinder 8 is slidably connected inside the limiting hole 12. When the second support frame 6 is reset, the third cylinder 8 is activated, which immediately activates the output end. The stopper rod is inserted laterally into the limiting hole 12, forming the first mechanical lock and restricting the vertical freedom of the second support frame 6. Anti-detachment blocks 16 are provided on one side of the outer wall of the upper mold 9 and the lower mold 10. The inner wall of the anti-detachment block 16 is threaded with fixing bolts 17. The anti-detachment block 16 and fixing bolts 17 are mainly used for mold management in non-processing states, such as during mold transportation, replacement, or long-term storage. The bolts forcefully lock the upper and lower molds 10 together to prevent the mold from slipping and being damaged. A first cylinder 2 is fixedly connected to one side of the outer wall of the first support frame 1.

[0041] The first cylinder 2 and the third cylinder 8 on the opposite side are arranged in opposite directions and are responsible for locking the other side. The second cylinder 7 is fixedly connected to the other side of the outer wall of the first support frame 1. The output end of the second cylinder 7 is fixedly connected to the lower surface of the second support frame 6. The second cylinder 7 is the power source of the unfolding component. Its extension and retraction directly drives the second support frame 6 to flip, realizing the switching between the two states of "reset limit" and "unfolding avoidance". The fixing part 4 is equipped with a demolding component. The inner wall of the first support platform 13 is fixedly connected to the rotating shaft 11. The rotating shaft 11 provides the center fulcrum for the rotation of the second support frame 6, ensuring that the trajectory of the support is accurate and controllable during the flipping process. The upper surface of the upper mold 9 is fixedly connected to the feed pipe 5. The feed pipe 5 is the only channel for raw material injection and protrudes from the surface of the upper mold 9. This is why the second support frame 6 must be designed to be flippable and unfoldable, so as to avoid the protruding feed pipe 5 when opening the mold and prevent interference.

[0042] Please see the appendix Figure 1 - Appendix Figure 7 The demolding assembly includes a fourth cylinder 19, which is located inside the fixing part 4. The fourth cylinder 19 is vertically positioned below the mold and can output a vertically upward lifting force, serving as the core power source for automatic demolding. A protective cover 15 is fixedly connected to the upper surface of the fixing part 4. A first magnet 18 and a second magnet 20 are fixedly connected to the output end of the fourth cylinder 19. The protective cover 15 encloses the cylinder and precision moving parts, preventing dust, flash, or overflowing foam material from the injection molding workshop from entering the cylinder and causing jamming. At the same time, the first magnet 18 and the second magnet 20 form a magnetic adsorption head.

[0043] Please see the appendix Figure 1 - Appendix Figure 8The inner wall of the first magnet 18 is slidably connected to the outer wall of the second magnet 20. The two magnets can adjust their relative positions or form a combined magnetic field within a certain range to adapt to the shape of different pipeline products or enhance local adsorption force. The first magnet 18 and the second magnet 20 are used to fix the product after injection molding. Since the interior of the insulated pipeline of the car refrigerator usually contains metal pipes or has a pre-placed magnetic medium during processing, the magnet assembly can use magnetic force to firmly adsorb the bottom of the product, thereby preventing the product from slipping or tilting during the lifting process. The lower surface of the upper mold 9 is slidably connected to the upper surface of the lower mold 10. The second support frame 6 is used to limit the upper mold 9. Here, the function of the second support frame 6 is reiterated. When the foaming expansion force attempts to lift the upper mold 9, the upper surface of the upper mold 9 will abut against the second support frame 6, thereby being restricted to a predetermined position. The outer wall of the fixing bolt 17 is threadedly connected to the inner wall of the upper mold 9 and the lower mold 10. Two fixing bolts 17 are provided. Setting two fixing bolts 17 can... The mold is fixed from different angles or symmetrical positions to prevent relative rotation or unilateral opening during transportation. The output end of the third cylinder 8 passes through the first support platform 13 and connects to the limiting hole 12. The third cylinder 8 is used to lock the second connecting block 21. Through the through connection, the piston rod of the third cylinder 8 actually acts as a high-strength pin, firmly nailing the second connecting block 21 to the first support platform 13 to withstand the shearing force during foaming. The outer wall of the rotating shaft 11 is rotatably connected to the inner wall of the second connecting block 21. The outer wall of the fourth cylinder 19 is provided with a protective cover 15 inside. The output end of the first cylinder 2 passes through the second support platform 14 and disengages from the first connecting block 3. The first cylinder 2 is used to fix or release the first connecting block 3. The operating logic of the first cylinder 2 is: during processing, it extends through the second support platform 14 and inserts into the first connecting block 3 for locking; after processing, it retracts and disengages, releasing the first connecting block 3, allowing the second support frame 6 to rotate with the drive of the second cylinder 7.

[0044] Before processing, unscrew the fixing bolts 17 between the anti-detachment block 16 and the inner wall of the mold to release the transport lock, put the pipeline to be processed into the lower mold 10 installed on the fixing part 4 and the first support frame 1, and fasten the upper mold 9 with the feed pipe 5 fixed on the lower mold 10 to complete the mold closing.

[0045] The second cylinder 7 on the outer wall of the first support frame 1 is activated, and its output end pushes the unfolding component, namely the second support frame 6, to rotate around the rotating shaft 11 inside the first support platform 13, and reset it to above the upper mold 9 and the feed pipe 5. At this time, the second support frame 6 does not press down, but acts as a rigid frame to limit the space of the upper mold 9.

[0046] After the second support frame 6 is in place, the third cylinder 8 on the outer wall of the first support platform 13 is activated, and its output end penetrates the platform body and is inserted into the limiting hole 12 on the side wall of the second connecting block 21. At the same time, the first cylinder 2 on the other side of the first support frame 1 is activated, and its output end penetrates the second support platform 14 and is connected and fixed to the first connecting block 3. Through the cooperation of the two cylinders, the second support frame 6 is locked.

[0047] With the mold closed and the external support locked, the injection molding machine connects to the feed pipe 5 fixed on the upper surface of the upper mold 9. The raw material is injected into the cavity composed of the upper mold 9 and the lower mold 10 through the feed pipe 5 for integral foaming molding. The foaming expansion force is borne by the restricted upper mold 9 and the externally locked second support frame 6.

[0048] After processing is completed, the first cylinder 2 and the third cylinder 8 retract, releasing the lock on the first connecting block 3 and the limiting hole 12. The second cylinder 7 is activated, driving the second support frame 6 to rotate in the opposite direction around the rotating shaft 11 and unfold, avoiding the upper mold 9 and the feed pipe 5, thus exposing the operating space.

[0049] The demolding assembly in the inner protective cover 15 of the fixing component 4 is activated. The output end of the fourth cylinder 19 pushes the second magnet 20 and the slidingly connected first magnet 18 to move upward. The magnetic force is used to attract and lift the product, separating it from the lower mold 10 and completing the removal of the part.

[0050] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A processing device for insulated pipelines of a vehicle refrigerator, comprising an upper mold (9) and a lower mold (10), characterized in that, The insulation pipes inside the upper mold (9) and the lower mold (10) are made by integral foaming.

2. The processing device for the insulation pipeline of a vehicle-mounted refrigerator according to claim 1, characterized in that, An unfolding component is provided above the upper mold (9); The unfolding assembly includes a second support frame (6), which is disposed above the upper mold (9). A first connecting block (3) is fixedly connected to one side of the outer wall of the second support frame (6), and a second connecting block (21) is fixedly connected to the other side of the outer wall of the second support frame (6). A limit hole (12) is opened on the outer wall of the second connecting block (21). A fixing member (4) is provided on the lower side of the outer wall of the lower mold (10). A first support frame (1) is fixedly connected to the lower surface of the fixing member (4). A second support platform (14) is fixedly connected to one side of the outer wall of the first support frame (1). A first support platform (13) is fixedly connected to the upper surface of the first support frame (1) on the side adjacent to the second support platform (14). A third cylinder (8) is fixedly connected to one side of the outer wall of the upper mold (9) and the lower mold (10). The output end of the third cylinder (8) is slidably connected inside the limiting hole (12). An anti-detachment block (16) is provided on one side of the outer wall of the upper mold (9) and the lower mold (10). A fixing bolt (17) is threadedly connected to the inner wall of the anti-detachment block (16). A first cylinder (2) is fixedly connected to one side of the outer wall of the first support frame (1). A second cylinder (7) is fixedly connected to the other side of the outer wall of the first support frame (1). The output end of the second cylinder (7) is fixedly connected to the lower surface of the second support frame (6). A demolding component is provided inside the fixing part (4). A rotating shaft (11) is fixedly connected to the inner wall of the first support platform (13). A feed pipe (5) is fixedly connected to the upper surface of the upper mold (9).

3. The processing device for the insulation pipeline of a vehicle-mounted refrigerator according to claim 2, characterized in that, The demolding assembly includes a fourth cylinder (19), which is located inside the fixing member (4). A protective cover (15) is fixedly connected to the upper surface of the fixing member (4). A first magnet (18) and a second magnet (20) are fixedly connected to the output end of the fourth cylinder (19).

4. The processing device for the insulation pipeline of a vehicle-mounted refrigerator according to claim 3, characterized in that, The inner wall of the first magnet (18) is slidably connected to the outer wall of the second magnet (20). The first magnet (18) and the second magnet (20) are used to fix the product after injection molding.

5. The processing device for the insulation pipeline of a vehicle-mounted refrigerator according to claim 2, characterized in that, The lower surface of the upper mold (9) is slidably connected to the upper surface of the lower mold (10), and the second support frame (6) is used to limit the upper mold (9).

6. The processing device for the insulation pipeline of a vehicle-mounted refrigerator according to claim 2, characterized in that, The outer wall of the fixing bolt (17) is threaded to the inner wall of the upper mold (9) and the lower mold (10), and there are two fixing bolts (17).

7. The processing device for the insulation pipeline of a vehicle-mounted refrigerator according to claim 2, characterized in that, The output end of the third cylinder (8) passes through the first support platform (13) and is connected to the limiting hole (12). The third cylinder (8) is used to lock the second connecting block (21).

8. The processing device for the insulation pipeline of a vehicle-mounted refrigerator according to claim 3, characterized in that, The outer wall of the rotating shaft (11) is rotatably connected to the inner wall of the second connecting block (21), and the outer wall of the fourth cylinder (19) is provided with a protective cover (15) inside.

9. The processing device for the insulation pipeline of a vehicle-mounted refrigerator according to claim 2, characterized in that, The output end of the first cylinder (2) passes through the second support platform (14) and is disconnected from the first connecting block (3). The first cylinder (2) is used to fix or release the first connecting block (3).

10. A processing method for a vehicle-mounted refrigerator insulation pipeline processing device according to claims 1-9, characterized in that, Includes the following steps: Before processing, unscrew the fixing bolts (17) between the anti-detachment block (16) and the inner wall of the mold to release the transport lock, put the pipeline to be processed into the lower mold (10) installed on the fixing part (4) and the first support frame (1), and fasten the upper mold (9) with the feed pipe (5) fixed on the lower mold (10) to complete the mold closing; Start the second cylinder (7) on the outer wall of the first support frame (1), and its output end pushes the unfolding component, namely the second support frame (6), to rotate around the rotating shaft (11) inside the first support platform (13), and reset it to above the upper mold (9) and the feed pipe (5). At this time, the second support frame (6) does not press down, but acts as a rigid frame to limit the space of the upper mold (9). After the second support frame (6) is in place, the third cylinder (8) on the outer wall of the first support platform (13) is activated. Its output end passes through the platform body and is inserted into the limiting hole (12) on the side wall of the second connecting block (21). At the same time, the first cylinder (2) on the other side of the first support frame (1) is activated. Its output end passes through the second support platform (14) and is connected and fixed to the first connecting block (3). The second support frame (6) is locked by the cooperation of the cylinders on both sides. With the mold closed and the external support locked, the injection molding machine connects to the feed pipe (5) fixed on the upper surface of the upper mold (9). The raw material is injected into the cavity composed of the upper mold (9) and the lower mold (10) through the feed pipe (5) for integral foaming molding. The foaming expansion force is borne by the restricted upper mold (9) and the externally locked second support frame (6). After processing, the first cylinder (2) and the third cylinder (8) retract, releasing the lock on the first connecting block (3) and the limiting hole (12). The second cylinder (7) moves, driving the second support frame (6) to rotate in the opposite direction around the rotating shaft (11) and unfold, avoiding the upper mold (9) and the feed pipe (5), thus exposing the operating space. The demolding assembly in the inner protective cover (15) of the fixed part (4) is activated. The output end of the fourth cylinder (19) pushes the second magnet (20) and the slidingly connected first magnet (18) to move upward. The magnetic force is used to attract and lift the product, separating it from the lower mold (10) to complete the removal of the part.

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