Plastic injection molding mold for recycling waste plastic parts

Abstract

The application discloses a plastic injection molding mold for recycling waste plastic parts, and relates to the technical field of injection molding. The plastic injection molding mold comprises a molding mold, the molding mold comprises an upper heat insulation box, an upper molding box, a lower molding box and a lower heat insulation box, a plurality of dampers are fixedly installed on the top of the upper molding box and the bottom of the lower molding box, a plurality of material ejection rods are fixedly connected to the bottom of the lower molding box, a magnet part is arranged on the outer side of each material ejection rod, a flow guide part one is fixedly connected to the bottom of the lower heat insulation box, and a hydraulic telescopic part is fixedly and communicatively arranged in the flow guide part one. When the contact block vibrates up and down, the inner molding mold formed by the lower molding box and the upper molding box vibrates up and down, the plastic parts formed in the lower molding box and the upper molding box are subjected to overall stress, the plastic parts are separated from the upper molding box and the lower molding box, the plastic parts are demolded through the vibration force, and the situation that the local plastic parts are subjected to unbalanced demolding force and are deformed and the fragile parts are broken is avoided.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, specifically a plastic injection molding mold for the reuse of waste plastic parts. Background Technology

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding, and is widely used in the production of plastic toys. The advantages of injection molding include high production speed and efficiency, automated operation, a wide variety of designs and shapes (from simple to complex), sizes ranging from large to small, precise product dimensions, easy product updates and replacements, and the ability to produce complex shapes.

[0003] This method involves stirring plastic material completely with a screw, injecting it into a mold cavity under high pressure, and then cooling and solidifying it to obtain a molded product. This method is suitable for the mass production of complex-shaped parts and is one of the important processing methods. Currently, the commonly used injection molding demolding method is one-time ejection. However, due to the different demolding forces at different points in the mold, the ejector pins move differently at points requiring higher and lower demolding forces. This is especially problematic when processing plastic products. Combined with the inherent brittleness of the plastic and the constraints of the mold, this can easily lead to breakage at weak points in the plastic product, resulting in economic losses. Summary of the Invention

[0004] The purpose of this invention is to provide a plastic injection molding mold for the reuse of waste plastic parts, so as to solve the problem in the prior art where the ejector pins move differently at positions with higher and lower required demolding forces, especially when processing plastic products. This is because the brittleness of the plastic itself and the constriction of the mold can easily lead to breakage at weak points in the plastic products.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plastic injection molding mold for recycling waste plastic parts, comprising a molding mold, the molding mold including an upper heat insulation box, an upper molding box, a lower molding box, and a lower heat insulation box; multiple dampers are fixedly installed on the top of the upper molding box and the bottom of the lower molding box; multiple ejector rods are fixedly connected to the bottom of the lower molding box; magnets are sleeved on the outer sides of the multiple ejector rods; a flow guide one is fixedly connected to the bottom of the lower heat insulation box; a hydraulic telescopic component is fixedly connected inside the flow guide one; a flow guide two is fixedly connected to the bottom of the flow guide one; a vibration demolding structure is connected to the flow guide two; a lifting demolding structure is provided at the bottom of the multiple ejector rods; a flow guide three is fixedly connected to the top of one side of the upper heat insulation box; and a flow guide four is fixedly connected to the bottom of one side of the lower heat insulation box.

[0006] Preferably, an injection pipe is fixedly connected to the top of the upper molding box, a rubber ring is sleeved on the outside of the injection pipe, the rubber ring is fixedly connected to the upper heat insulation box, and multiple limiting rods are fixedly connected to the outside of the injection pipe.

[0007] Preferably, the upper insulation box has a snap-fit ​​plate fixedly connected to both sides of its bottom, the lower insulation box has square slots on both sides of its top, the upper molding box has multiple plug-in rods fixedly connected to its bottom, and the lower molding box has multiple circular slots on its top.

[0008] Preferably, the damper fixedly installed in the upper forming box is located inside the upper heat insulation box and is fixedly connected to the upper heat insulation box; the damper fixedly connected to the lower forming box is located inside the lower heat insulation box and is fixedly connected to the lower heat insulation box; the magnet is fixedly connected to the lower forming box; and the bottom end of the top material rod extends through the lower heat insulation box to the outside of the lower heat insulation box.

[0009] Preferably, the vibration demolding structure includes a three-way valve, a flow guide box, and a vibrator fixedly connected to the bottom of the flow guide box. Multiple flow guide components 5 are rotatably connected to the top of the flow guide box. Each of the multiple flow guide components 5 has an internally threaded component 1 rotatably connected to its top. A flow guide component 6 and an externally threaded component 2 are provided on one side of each flow guide component 5. The externally threaded component 2 is fixedly connected to the flow guide box. The internally threaded component 2 is rotatably connected to the top of the flow guide component 6. The flow guide component 6 is rotatably connected to the flow guide box. An externally threaded component 1 is provided on one side of the flow guide component 6. The externally threaded component 1 is fixedly connected to the flow guide box.

[0010] Preferably, a dividing vertical plate is fixedly connected inside the flow guide box. The flow guide component six is ​​disposed on one side of the top of the dividing vertical plate, the flow guide component five is disposed on the other side of the dividing vertical plate, and flow guide components seven are disposed at the bottom of both sides of the dividing vertical plate. The flow guide components seven are fixedly connected to the flow guide box. The flow guide component seven disposed at the bottom of the dividing vertical plate near the flow guide component six is ​​fixedly installed at the normally open end of the three-way valve, and the flow guide component seven disposed at the bottom of the dividing vertical plate away from the flow guide component six is ​​fixedly installed at the normally closed end of the three-way valve. A water supply pipe is fixedly installed at one end of the three-way valve.

[0011] Preferably, a drain valve is provided at the bottom of one of the flow guides five and the bottom of one of the flow guides six. The drain valve is fixedly connected to the flow guide box and is located at the bottom of the flow guide box. A drive shaft is provided on the side of the flow guide five away from the flow guide six. The drive shaft is fixedly connected to the flow guide box and a contact block is fixedly connected to the top of the drive shaft.

[0012] Preferably, the lifting and demolding structure includes a pneumatic cylinder and multiple snap-fit ​​components. A connecting bend plate is fixedly installed on the piston end of the pneumatic cylinder. The connecting bend plate is U-shaped and is threadedly connected to two bolts.

[0013] Preferably, the snap-fit ​​assembly includes two snap-fit ​​plates, each with an electromagnet fixedly mounted on its top, and the top of each electromagnet having multiple pre-reserved circular slots.

[0014] Preferably, the second snap-fit ​​plate has grooves on both sides of its bottom and threaded grooves on both sides of its top. Two snap-fit ​​plates are provided between two adjacent snap-fit ​​components, and each snap-fit ​​plate is threaded with a bolt at both ends.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In this application, when the contact block vibrates up and down, the inner molding mold composed of the lower molding box and the upper molding box vibrates up and down. The upper heat insulation box is fixedly installed with the structure controlling the opening and closing of the molding mold, and the lower heat insulation box is fixedly installed with the equipment. Therefore, the upper molding box and the lower molding box vibrate inside the upper heat insulation box and the lower heat insulation box, avoiding injury to the workers. This ensures that the plastic parts molded inside the lower molding box and the upper molding box are fully stressed, causing the plastic parts to separate from the upper molding box and the lower molding box. The vibration force demolds the plastic parts, reducing the occurrence of deformation and cracking of structurally weak parts caused by uneven demolding forces on the plastic parts, and ensuring the injection molding quality of the plastic parts.

[0017] 2. In this application, even if the vibration of the vibration demolding structure fails to completely separate the lower molding box from the plastic part, after the ejector rod pushes the plastic part and the lower molding box upwards synchronously for a certain distance, the damper fixedly installed in the lower molding box extends to its limit. At this time, the pneumatic cylinder works to make the ejector rod continue to move upwards to separate the plastic part from the lower molding box, ensuring that the plastic part is separated from the lower molding box. The upward movement of the ejector rod can push out the plastic part inside the lower molding box, ensuring that the plastic part is separated from the lower molding box, which has most of the structure of the molding part, making it convenient for workers to collect the plastic part.

[0018] 3. Even if only a connected portion of the forming mold is installed on the vibration demolding structure of this application, the vibration demolding structure can accelerate the vibration demolding and cooling of the forming mold. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the molding die of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged view of the A-section structure;

[0022] Figure 4 This is a schematic diagram of the upper molding box structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the heat insulation box of the present invention;

[0024] Figure 6This is a schematic diagram of the structure of the flow guide component of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection structure between the molding die and the vibration demolding structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the vibration demolding structure of the present invention;

[0027] Figure 9 This is a partial structural schematic diagram of the flow guide box of the present invention;

[0028] Figure 10 This is a schematic diagram of the transmission shaft of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure of the vertical partition plate of the present invention;

[0030] Figure 12 This is a schematic diagram of the connection structure between the molding die and the lifting demolding structure of the present invention;

[0031] Figure 13 This is a schematic diagram of the structure of the snap-fit ​​plate three of the present invention;

[0032] Figure 14 For the present invention Figure 13 Enlarged view of the C-section structure;

[0033] Figure 15 This is a schematic diagram of the second snap-fit ​​plate of the present invention.

[0034] The diagram is labeled as follows: 1. Molding mold; 11. Upper heat insulation box; 12. Clip plate one; 13. Upper molding box; 14. Damper; 15. Insert rod; 16. Injection pipe; 17. Limiting rod; 18. Lower molding box; 19. Lower heat insulation box; 110. Square slot; 111. Ejector rod; 112. Magnet; 113. Flow guide one; 114. Hydraulic telescopic component; 115. Flow guide two; 116. Rubber ring; 117. Flow guide three; 118. Flow guide four; 119. Circular slot; 2. Vibration demolding structure; 21. Flow guide box; 22. Vibrator; 23. Drive shaft; 24. Contact block; 25. Flow guide five; 26. Internal threaded part one; 27. Flow guide six; 28. Internal threaded part two; 29. ​​External threaded part one; 210. Separating vertical plate; 211. Flow guide seven; 212. Three-way valve; 213. Water supply pipe; 214. External threaded part two; 215. Drain valve; 3. Lifting demolding structure; 31. Clip plate two; 32. Electromagnet; 33. Groove; 34. Threaded groove; 35. Clip plate three; 36. Bolt one; 37. Connecting elbow plate; 38. Bolt two; 39. Pneumatic cylinder; 310. Reserved circular groove. Detailed Implementation

[0035] 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.

[0036] Example: Figures 1-15 As shown, the present invention provides a technical solution for a plastic injection molding mold for the reuse of waste plastic parts, including a molding mold 1. The molding mold 1 includes an upper heat insulation box 11, an upper molding box 13, a lower molding box 18, and a lower heat insulation box 19. Multiple dampers 14 are fixedly installed on the top of the upper molding box 13 and the bottom of the lower molding box 18. Multiple ejector rods 111 are fixedly connected to the bottom of the lower molding box 18. Magnets 112 are sleeved on the outer side of each ejector rod 111. A first flow guide 113 is fixedly connected to the bottom of the lower heat insulation box 19. A hydraulic telescopic component 114 is fixedly connected inside the first flow guide 113. A second flow guide 115 is fixedly connected to the bottom of the first flow guide 113. The second flow guide 115 is connected to a vibration demolding structure 2. A lifting demolding structure 3 is provided at the bottom of the multiple ejector rods 111. A third flow guide 117 is fixedly connected to the top of one side of the upper heat insulation box 11, and a fourth flow guide 118 is fixedly connected to the bottom of one side of the lower heat insulation box 19.

[0037] Specifically, in this application, the molding die 1 is composed of an upper heat insulation box 11, an upper molding box 13, a lower molding box 18, and a lower heat insulation box 19. Multiple dampers 14 are fixedly installed on the top of the upper molding box 13 and the bottom of the lower molding box 18. The dampers 14 fixedly installed on the upper molding box 13 are located inside the upper heat insulation box 11 and are fixedly connected to the upper heat insulation box 11. The upper molding box 13 and the upper heat insulation box 11 form the upper moving die. A drive device is installed on the upper heat insulation box 11 in the upper moving die to control the upper moving die to move up and down to perform the mold closing and opening work. The dampers 14 fixedly connected to the lower molding box 18 are located inside the lower heat insulation box 19 and are fixedly connected to the lower heat insulation box 19. The lower molding box 18 and the lower heat insulation box 19 form the lower fixed die. The lower heat insulation box 19 is fixedly installed on the equipment in the lower fixed die.

[0038] During the mold closing process of the upper moving mold and the lower fixed mold, because there are snap-fit ​​plates 12 fixedly connected to both sides of the bottom of the upper heat insulation box 11, and square slots 110 are opened on both sides of the top of the lower heat insulation box 19, the two snap-fit ​​plates 12 will enter the corresponding square slots 110, and the upper heat insulation box 11 and the lower heat insulation box 19 will be installed together; the plug-in rod 15 fixedly connected to the bottom of the upper molding box 13 will enter the circular slot 119 opened on the top of the lower molding box 18. There are multiple plug-in rods 15 and circular slots 119. Through the cooperation of multiple plug-in rods 15 and the lower heat insulation box 19, it is ensured that the lower molding box 18 and the upper molding box 13 move up and down synchronously, and the left and right relative positions between the upper molding box 13 and the lower molding box 18 will not change.

[0039] An injection tube 16 is fixedly connected to the top of the upper molding box 13. A rubber ring 116 sleeved on the outside of the injection tube 16 is fixedly installed with the upper heat insulation box 11. The top end of the injection tube 16 extends through the rubber ring 116 to the top of the upper heat insulation box 11. The length of the injection tube 16 extending to the top of the upper heat insulation box 11 is sufficiently reserved so that when the upper molding box 13 moves up and down within a certain range, the top end of the injection tube 16 is still set at the top of the upper heat insulation box 11 to meet the needs of injection molding into the injection tube 16. Multiple limiting rods 17 are fixedly connected to the outside of the injection tube 16. With the cooperation of the limiting rods 17 and the rubber ring 116, the injection tube 16 can only move up and down.

[0040] Furthermore, both the upper molding box 13 and the lower molding box 18 are supported by the damper 14. The damper 14 requires a large force to contract. Therefore, even after the upper molding box 13 and the lower molding box 18 are filled with liquid plastic, the contraction requirement of the damper 14 cannot be met, so that the upper molding box 13 and the lower molding box 18 can stably shape the plastic.

[0041] Multiple ejector rods 111 are fixedly connected to the bottom of the lower forming box 18. Magnets 112 are sleeved on the outer side of each ejector rod 111. The magnets 112 are fixedly connected to the lower forming box 18. The magnets 112 are attracted together by the magnetic iron ejector rods 111. Therefore, before the lower forming box 18 is restricted in its vertical position and the ejector rods 111 are subjected to a certain force, the relative position between the ejector rods 111 and the magnets 112 remains unchanged.

[0042] A flow guide 113 is fixedly connected to the bottom of the lower heat insulation box 19. A hydraulic telescopic component 114 is fixedly connected inside the flow guide 113. The vibrator 22 in the vibration demolding structure 2 is fixedly installed on the equipment. Multiple drive shafts 23 are fixedly connected to the top of the flow guide 21 fixedly installed at the output end of the vibrator 22. A contact block 24 is fixedly connected to the top of the drive shaft 23. During the installation of the molding mold 1, after aligning the hydraulic telescopic component 114 in the molding mold 1 with the contact block 24, the molding mold 1 is moved down so that the contact block 24 enters the lower heat insulation box 19. Finally, the molding mold 1 is fixedly installed together with the equipment. Then, the molding mold 1 is installed on the outside of the multiple contact blocks 24 in sequence, and the lower heat insulation box 19 in the molding mold 1 is fixedly installed together with the equipment. The assembly of the vibration demolding structure 2 and the multiple molding molds 1 can be completed.

[0043] After liquid plastic is injected into the inner molding mold formed by the upper molding box 13 and the lower molding box 18 through the injection pipe 16, the liquid plastic inside the inner molding mold is allowed to form. Since each of the multiple drive shafts 23 has a guide component 25 on one side, and the top of each guide component 25 is rotatably connected to an internal thread component 26, and at this time, each internal thread component 26 corresponds to one of the multiple molding molds 1. In the molding mold 1, the bottom of the guide component 113 is fixedly connected to the guide component 215. The internal thread component 26 is rotated to the outside of the guide component 215, so that the guide component 215 and the internal thread component 26 are threaded together. Since the guide component 25 is rotatably connected to the guide box 21, and the internal thread component 26 is rotatably connected to the guide component 25, the internal thread component 26 is rotatably connected to the guide component 25. The flow guide 25 is elastic and can deform to a certain extent, and has a certain margin. Therefore, the internal threaded part 26 can be rotated to the outside of the flow guide 215 without causing the flow guide 25 to twist violently, so that the flow guide 25 can connect the flow guide 215 to the inside of the flow box 21. A flow guide 27 is provided on one side of the flow guide 25. The top of the flow guide 27 is rotatably connected to the internal threaded part 28. The flow guide 27 is rotatably connected to the flow box 21. Since the flow guide 27 can deform to a certain extent and is relatively long, the internal threaded part 28 can be rotated to the outside of the flow guide 418 fixedly connected to the lower heat insulation box 19, so that the flow guide 27 connects the inside of the lower heat insulation box 19 to the inside of the flow box 21.

[0044] Therefore, after the liquid plastic is injected into the inner molding mold composed of the upper molding box 13 and the lower molding box 18, the three-way valve 212 in the vibration demolding structure 2 is controlled to work. The normally closed end of the three-way valve 212 opens and the normally open end closes. Since the guide element 7 211 fixed at the normally closed end of the three-way valve 212 is set at the bottom of the partition vertical plate 210 away from the guide element 6 27, and the guide element 5 25 is also set on the side of the partition vertical plate 210 away from the guide element 6 27, under the action of the partition vertical plate 210 dividing the inside of the guide box 21, the guide element 7 211 installed at the normally closed end of the three-way valve 212 is connected to the inside of multiple guide elements 5 25 through the guide box 21. The water supply pipe 213 fixedly installed at one end of the three-way valve 212 is used to install a water pump, so at this time the water is controlled to work. When the pump operates, it fills the three-way valve 212 with water. At this time, the water enters the interior of multiple guide elements 25 through the guide element 211 and guide box 21 installed on the normally closed end of the three-way valve 212. The internal threaded part 26 installed on one end of the guide element 25 is installed together with the guide element 115 installed on the guide element 113. Therefore, the multiple guide elements 25 guide the water into the interior of multiple guide elements 113, causing the hydraulic expansion member 114 fixedly connected inside the guide element 113 to expand. Finally, the hydraulic expansion member 114 expands and wraps around the outside of the drive shaft 23, sealing the lower heat insulation box 19. Then, the three-way valve 212 is stopped and the normally closed end of the three-way valve 212 is closed, keeping the multiple hydraulic expansion members 114 in a sealed state to the lower heat insulation box 19.

[0045] At this time, the working water pump delivers water to the inside of the guide component 7 211 installed at the normally open end of the three-way valve 212. The guide component 7 211 and the guide component 6 27 are located on the same side. Under the separation of the vertical partition plate 210, the guide component 7 211 delivers water to the inside of multiple guide components 6 27 through the guide box 21. The internal threaded part 28 installed on the guide component 6 27 is installed on the outside of the guide component 4 118 fixedly connected to the lower heat insulation box 19. The guide component 6 27 guides water into one side of the lower heat insulation box 19. Therefore, as the water level inside the outer heat insulation cover composed of the lower heat insulation box 19 and the upper heat insulation box 11 rises, the inner molding mold composed of the upper molding box 13 and the lower molding box 18 is submerged by the water flow. The upper molding box 13 and the lower molding box 18 are made of materials with good thermal conductivity, so that the upper molding box 13 and the lower molding box 18 exchange heat with the water, which accelerates the solidification and molding speed of the plastic parts inside the inner molding mold and reduces time cost investment.

[0046] A flow guide 3 117 is fixedly connected to the top of one side of the upper heat insulation box 11. After the water level inside the outer heat insulation cover rises to the side of the flow guide 3 117, the water is discharged through the flow guide 3 117. Under the action of multiple flow guides 6 27 for diversion and multiple flow guides 3 117 for drainage, the water inflow and outflow speeds reach a balance, so that the water flow can be controlled to be discharged through the flow guide 3 117, which facilitates water collection and utilization.

[0047] After plastic molding, since one of the guide components 25 and the other of the guide components 27 are equipped with drain valves 215 at their bottoms, the drain valves 215 are fixedly connected to the guide box 21. By controlling the two drain valves 215 to open, water on both sides of the partition plate 210 is drained, thus completely draining the water inside the hydraulic telescopic component 114 and the outer heat insulation cover. The hydraulic telescopic component 114 retracts, and the drive shaft 23 no longer contacts the hydraulic telescopic component 114. Subsequently, the vibrator 22 in the vibration demolding structure 2 is controlled to work. The guide box 21, which is fixedly connected to the output end of the vibrator 22, vibrates rapidly up and down, causing the guide box 21 to drive the contact block 24 to vibrate up and down through the drive shaft 23. At this time, the contact block 24 is located inside the lower heat insulation box 19 and contacts the lower molding box 18. Both the lower molding box 18 and the upper molding box 13 are installed by dampers 14 and can vibrate up and down after being subjected to a certain force. When the contact block 24 moves upward, the lower molding box 19... 8. The upper molding box 13 at the top of the lower molding box 18 moves upward. When the contact block 24 moves downward, the lower molding box 18 and the upper molding box 13 move downward synchronously under the rebound and contraction action of multiple dampers 14. Therefore, when the contact block 24 vibrates up and down, the inner molding mold composed of the lower molding box 18 and the upper molding box 13 vibrates up and down. The upper heat insulation box 11 is fixedly installed with the structure controlling the opening and closing of the molding mold 1, and the lower heat insulation box 19 is fixedly installed with the equipment. Therefore, the upper molding box 13 and the lower molding box 18 vibrate inside the upper heat insulation box 11 and the lower heat insulation box 19 to avoid injury to the workers. This allows the plastic parts molded inside the lower molding box 18 and the upper molding box 13 to be fully stressed, causing the plastic parts to separate from the upper molding box 13 and the lower molding box 18. The plastic parts are demolded by the vibration force, reducing the occurrence of deformation and breakage of structurally weak parts caused by uneven demolding force on the inner plastic parts, and ensuring the injection molding quality of the plastic parts.

[0048] Before installing the molding die 1 onto the vibration demolding structure 2, a lifting demolding structure 3 can be installed on the outside of the vibration demolding structure 2. Electromagnets 32 are fixedly installed on the tops of the two snap-fit ​​plates 31 of the snap-fit ​​assembly in the lifting demolding structure 3. The snap-fit ​​plates 31 are installed in preset positions, and the multiple reserved circular grooves 310 on the top of the electromagnets 32 correspond one-to-one with the multiple ejector rods 111 in the molding die 1, so that the reserved circular grooves 310 are positioned on the vertical movement path of the ejector rods 111. Grooves 33 are provided on both sides of the bottom of the snap-fit ​​plates 31, and grooves 33 are provided on both sides of the top of the snap-fit ​​plates 31. There is a threaded groove 34, one end of which is connected to the groove 33. Two snap-fit ​​plates 35 are provided between two adjacent snap-fit ​​components. After the two ends of the snap-fit ​​plates 35 are placed inside the grooves 33 opened by the two snap-fit ​​plates 21 on the left and right, the bolts 36, which are threaded at both ends of the snap-fit ​​plates 35, are rotated so that the bolts 36 pass through the threaded grooves 34 opened by the snap-fit ​​plates 21. By operating the two snap-fit ​​plates 35 in sequence, the two snap-fit ​​components on the left and right can be installed together. Multiple snap-fit ​​components can be installed together in the same way so that multiple snap-fit ​​components can move up and down synchronously.

[0049] Furthermore, in the lifting and demolding structure 3, the piston end of the pneumatic cylinder 39 is fixedly installed with a connecting bent plate 37. The U-shaped connecting bent plate 37 is threaded with two bolts 38. The two ends of the connecting bent plate 37 are inserted into the grooves 33 opened in the two rightmost snap-fit ​​plates 31, and the bolts 38 rotate through the grooves 33 and are fixed together with the snap-fit ​​plates 31, so that the connecting bent plate 37 can drive multiple snap-fit ​​components to move up and down synchronously. After the vibration demolding structure 2 has finished working, the upper moving mold is controlled to move up and down and separate from the lower fixed mold. Then, the pneumatic cylinder 39 fixedly installed on the equipment is controlled to extend. The pneumatic cylinder 39 drives multiple snap-fit ​​components to move up through the connecting bent plate 37. Multiple snap-fit ​​plates 31 and multiple electromagnets 32 move up. The electromagnets 32 with reserved circular grooves 310 are sleeved on the outside of the ejector rod 111 and snap-fit. The plate 2 31 moves upward to push the ejector rod 111 upward. The top of the ejector rod 111 is located inside the lower molding box 18. The damper 14 installed in the lower molding box 18 has a limited extension length. Even if the vibration of the vibration demolding structure 2 fails to completely separate the lower molding box 18 from the plastic part, after the ejector rod 111 pushes the plastic part and the lower molding box 18 upward synchronously for a certain distance, the damper 14 fixedly installed in the lower molding box 18 extends to its limit. At this time, the pneumatic cylinder 39 works to make the ejector rod 111 continue to move upward to separate the plastic part from the lower molding box 18, ensuring that the plastic part is separated from the lower molding box 18. The upward movement of the ejector rod 111 can push out the plastic part inside the lower molding box 18, ensuring that the plastic part is separated from the lower molding box 18, which has most of the structure of the molding part, making it convenient for workers to collect the plastic part.

[0050] When the pneumatic cylinder 39 extends to its limit, the electromagnet 32 ​​is activated. The activated electromagnet 32 ​​is magnetically attracted and fixed to the ejector rod 111, causing the ejector rod 111, electromagnet 32, and snap-fit ​​plate 31 to move down synchronously. Then, the pneumatic cylinder 39 is activated to retract, causing the ejector rod 111 to reset. The electromagnet 32 ​​then stops working, and the pneumatic cylinder 39 continues to retract, completely separating the electromagnet 32 ​​from the ejector rod 111. The electromagnet 32 ​​does not affect the small up-and-down movement of the ejector rod 111. At this time, the magnet 112 on the outside of the ejector rod 111 limits the iron ejector rod 111 with magnetic force, causing the ejector rod 111 to move up and down synchronously with the lower forming box 18.

[0051] Other, such as Figure 9 and Figure 10 As shown, an external threaded part 29 is provided on one side of the flow guide 6 27. An internal threaded part 28 can be rotated and installed on the outside of the external threaded part 29, so that the internal threaded part 28 and the external threaded part 29 are threaded together. At this time, one end of the flow guide 6 27 is sealed by the external threaded part 29. An external threaded part 214 is provided on one side of the flow guide 5 25. One end of the internal threaded part 26 is rotated and installed on the outside of the external threaded part 214 fixed in the flow guide box 21, so that one end of the flow guide 5 25 is blocked. Therefore, only a part of the forming mold 1 is installed on the vibration demolding structure 2, which can also make the vibration demolding structure 2 vibrate and demold and accelerate the cooling inside the forming mold 1.

[0052] Furthermore, the flow guide 7 211, flow guide 5 25 and flow guide 6 27 are all flexible hoses that can undergo a certain degree of deformation to meet the needs of the flow guide box 21 to transmit vibration force.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A plastic injection molding mold for recycling waste plastic parts, comprising a molding mold (1), characterized in that: The molding die (1) includes an upper heat insulation box (11), an upper molding box (13), a lower molding box (18), and a lower heat insulation box (19). Multiple dampers (14) are fixedly installed on the top of the upper molding box (13) and the bottom of the lower molding box (18). Multiple ejector rods (111) are fixedly connected to the bottom of the lower molding box (18). Magnets (112) are sleeved on the outside of the multiple ejector rods (111). A flow guide (113) is fixedly connected to the bottom of the lower heat insulation box (19). The first flow guide (113) is internally connected to a hydraulic telescopic component (114), the bottom of the first flow guide (113) is fixedly connected to a second flow guide (115), the second flow guide (115) is connected to a vibration demolding structure (2), the bottom of the multiple ejector rods (111) is provided with a lifting demolding structure (3), the top of one side of the upper heat insulation box (11) is fixedly connected to a third flow guide (117), and the bottom of one side of the lower heat insulation box (19) is fixedly connected to a fourth flow guide (118). The top of the upper molding box (13) is fixedly connected to an injection pipe (16), and a rubber ring (116) is sleeved on the outside of the injection pipe (16). The rubber ring (116) is fixedly connected to the upper heat insulation box (11), and multiple limiting rods (17) are fixedly connected to the outside of the injection pipe (16). The vibration demolding structure (2) includes a three-way valve (212), a flow guide box (21), and a vibrator (22) fixedly connected to the bottom of the flow guide box (21). The top of the flow guide box (21) is rotatably connected to multiple flow guide parts five (25). The top of each of the multiple flow guide parts five (25) is rotatably connected to an internal thread part one (26). A flow guide part six (27) and an external thread part two (214) are provided on one side of the flow guide part five (25). The external thread part two (214) is fixedly connected to the flow guide box (21). The top of the flow guide part six (27) is rotatably connected to an internal thread part two (28). The flow guide part six (27) is rotatably connected to the flow guide box (21). An external thread part one (29) is provided on one side of the flow guide part six (27). The external thread part one (29) is fixedly connected to the flow guide box (21). The lifting demolding structure (3) includes a pneumatic cylinder (39) and multiple snap-fit ​​components. The piston end of the pneumatic cylinder (39) is fixedly installed with a connecting bend plate (37). The connecting bend plate (37) is U-shaped and has two bolts (38) threadedly connected to it.

2. The plastic injection molding die for recycling waste plastic parts according to claim 1, characterized in that: The upper insulation box (11) has a snap-fit ​​plate (12) fixedly connected to both sides of the bottom. The lower insulation box (19) has square slots (110) on both sides of the top. The upper molding box (13) has multiple plug-in rods (15) fixedly connected to the bottom. The lower molding box (18) has multiple circular slots (119) on the top.

3. The plastic injection molding mold for recycling waste plastic parts according to claim 1, characterized in that: The damper (14) fixedly installed in the upper molding box (13) is located inside the upper heat insulation box (11) and is fixedly connected to the upper heat insulation box (11). The damper (14) fixedly connected to the lower molding box (18) is located inside the lower heat insulation box (19) and is fixedly connected to the lower heat insulation box (19). The magnet (112) is fixedly connected to the lower molding box (18). The bottom end of the top material rod (111) passes through the lower heat insulation box (19) and extends to the outside of the lower heat insulation box (19).

4. The plastic injection molding mold for recycling waste plastic parts according to claim 1, characterized in that: The flow guide box (21) is fixedly connected to a partition vertical plate (210). The flow guide six (27) is set on one side of the top of the partition vertical plate (210), and the flow guide five (25) is set on the other side of the partition vertical plate (210). The bottom of both sides of the partition vertical plate (210) is provided with flow guide seven (211). The flow guide seven (211) is fixedly connected to the flow guide box (21). The flow guide seven (211) set on the bottom of the partition vertical plate (210) near the flow guide six (27) is fixedly installed on the normally open end of the three-way valve (212). The flow guide seven (211) set on the bottom of the partition vertical plate (210) away from the flow guide six (27) is fixedly installed on the normally closed end of the three-way valve (212). A water supply pipe (213) is fixedly installed on one end of the three-way valve (212).

5. A plastic injection molding die for recycling waste plastic parts according to claim 1, characterized in that: A drain valve (215) is provided at the bottom of one of the flow guides (25) and the bottom of one of the flow guides (27). The drain valve (215) is fixedly connected to the flow guide box (21). The drain valve (215) is located at the bottom of the flow guide box (21). A drive shaft (23) is provided on the side of the flow guide (25) away from the flow guide (27). The drive shaft (23) is fixedly connected to the flow guide box (21). A contact block (24) is fixedly connected to the top of the drive shaft (23).

6. A plastic injection molding die for recycling waste plastic parts according to claim 1, characterized in that: The snap-fit ​​assembly includes two snap-fit ​​plates (31), and an electromagnet (32) is fixedly installed on the top of each of the two snap-fit ​​plates (31). The top of the electromagnet (32) is provided with multiple reserved circular slots (310).

7. A plastic injection molding die for recycling waste plastic parts according to claim 6, characterized in that: The second snap-fit ​​plate (31) has grooves (33) on both sides of its bottom and threaded grooves (34) on both sides of its top. Two snap-fit ​​plates (35) are provided between two adjacent snap-fit ​​components. Both ends of the snap-fit ​​plates (35) are threaded with bolts (36).

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