A laser intelligent bird repeller shell injection molding device facilitating demolding

Abstract

This invention relates to the field of injection molding equipment technology, specifically to an injection molding device for a laser-driven intelligent bird repeller shell that facilitates demolding. The device includes a shell, with a hydraulic drive installed on the inner wall of the shell. Four moving mold modules are welded to one side of the hydraulic drive, and four stationary mold modules are installed on the inner wall of the shell away from the moving mold modules. Each stationary mold module is compatible with a moving mold module. Each moving mold module includes a shell, which is welded to the hydraulic drive. A support frame is fixed to the side of the shell away from the hydraulic drive. This invention achieves mold closure and sealing through hydraulic drive. During demolding, an electric push rod drives the structure to expand the outer module and contract the inner module, forming a suspended shell state. Pneumatic demolding uses air jets to form an air cavity. An annular water bladder generates alternating kneading force under hydraulic fluctuations, coordinating with mechanical expansion and pneumatic ejection to achieve efficient and non-destructive demolding of the deep-cavity shell, avoiding whitening.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment technology, specifically to an injection molding device for the housing of a laser-based intelligent bird repeller that facilitates demolding. Background Technology

[0002] Currently, the injection molding of laser-based intelligent bird deterrent housings generally adopts traditional mold structures. Its basic structure includes a moving mold, a stationary mold, a mold cavity, and an ejector pin demolding system. The working principle is as follows: During injection molding, the moving mold and stationary mold close to form a sealed cavity. Molten plastic is injected into the cavity under high pressure through the injection head. After cooling and solidification, the moving mold and stationary mold separate. Subsequently, the molded housing is ejected from the mold core surface through an ejector pin mechanism or pneumatic auxiliary device. Demolding mainly relies on an inflation structure, which injects high-pressure gas into the gap between the molded housing and the mold core, using the gas pressure to separate the housing from the mold core.

[0003] The invention publication number is CN115302718B A molding die for injection molding of a security camera housing includes a base, an upper mold assembly, a lower mold assembly, a cylinder, a sealing assembly, a connecting assembly, and a first piston. The upper mold assembly is slidably mounted on the base and has a connecting channel. The lower mold assembly is mounted on the base and has an injection port for providing raw materials for injection molding of the workpiece. An injection cavity is formed between the upper and lower mold assemblies. However, demolding relies entirely on air pressure, and excessive internal pressure over a long period can lead to fatigue of the seals, resulting in air leakage. Once air leakage occurs, the internal pressure of the system rapidly decreases, making it impossible to continuously provide uniform thrust, causing the housing to remain partially adhered to the mold core, resulting in incomplete demolding or mold jamming failure. At the same time, the mold core of deep cavities and housing structures (such as laser bird deterrent housings) has a large surface area and high clamping force, making it difficult for single pneumatic demolding to cover the entire contact surface, especially for corners or deep groove areas. In addition, although traditional mechanical ejectors can supplement the thrust, they easily leave indentations on the housing surface, affecting the appearance quality. Summary of the Invention

[0004] The purpose of this invention is to provide an injection molding device for the housing of a laser-based intelligent bird repeller that is easy to demold, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser intelligent bird repeller housing injection molding device that facilitates demolding, comprising a device housing, wherein a hydraulic drive is installed on the inner wall of the device housing, four moving mold modules are welded to one side of the hydraulic drive, and four stationary mold modules are installed on the inner wall of the device housing away from the moving mold modules, and each stationary mold module is adapted to the moving mold module.

[0006] The moving mold module includes a shell, which is welded to a hydraulic drive. A support frame is fixed to the side of the shell away from the hydraulic drive. Four outer modules are arranged in a circumferential array inside the cavity of the support frame, and the four outer modules can move closer to or away from the center at the same time. An annular water bladder is installed on the side of the four outer modules away from the shell, and the chamber of the annular water bladder connected to each outer module is independent. An elastic connecting pad is fixed between two adjacent outer modules, and the elastic connecting pad is sealed to the annular water bladder. An elastic bottom sealing pad is fixed to the end of the four outer modules near the shell, and the elastic bottom sealing pad is fixed to the elastic connecting pad. A positioning cylinder is installed on the side of the elastic bottom sealing pad away from the outer module, and a pneumatic demolding structure is inserted into the cavity of the positioning cylinder.

[0007] A sealing plate is movably connected between the four outer modules. Four inclined sliding grooves are provided at the corners of the sealing plate on the side away from the outer shell. An inner module is slidably connected in the cavity of each inclined sliding groove. An L-shaped fork plate is slidably connected between adjacent inner modules. Pushing structures with different positions are provided in the cavities of the inner modules and the outer modules, which can push the four outer modules to separate while also pushing the four inner modules to move closer to each other.

[0008] Preferably, each of the outer modules has a sealing cavity on the side near the annular water bladder, and the sealing cavity is located on the side of the annular water bladder near the inner module, and the sealing cavity can be inserted into the static mold module. Each of the sealing cavities has a mold closing line on the side away from the annular water bladder.

[0009] Two symmetrically positioned elastic push rods are fixed between each outer module and the inner wall of the support frame. Four elastic telescopic rods are fixed in a circumferential array on the side of the support frame away from the outer shell, and each elastic telescopic rod is fixed to the corresponding outer module. Each outer module has a cooling cavity communicating with an annular water bladder inside. Each outer module also has a conduit communicating with the cooling cavity fixed to its outer wall, and the conduit is inserted into the interior of the outer shell.

[0010] Preferably, a C-shaped square tube is fixed to the inner wall of the outer shell, and a bidirectional sliding piston is slidably connected to the center of the C-shaped square tube, which divides the chamber of the C-shaped square tube vertically. A vibration motor is fixed to the outer wall of the bidirectional sliding piston. Two symmetrically positioned inlet pipes are fixed to the side of the C-shaped square tube away from the support frame, and the two inlet pipes are not connected to each other. One end of the conduit on each outer module is fixed to a converging pipe, and each converging pipe is fixed to the C-shaped square tube. The converging pipes on two conduits with opposite positions are also fixed to the C-shaped square tube in opposite positions.

[0011] Preferably, the pneumatic demolding structure includes a sliding tube, which is slidably connected to the cavity of the positioning cylinder and is also slidably connected to the sealing plate. An air supply pipe is slidably connected to the side of the sliding tube away from the sealing plate and is fixedly connected to the outer shell. A block is fixedly connected to the outer wall of the sliding tube near the sealing plate. A central tube is provided on the side of the sealing plate away from the block and is fixedly connected to the air supply pipe.

[0012] Preferably, a sealing plate is fixedly connected to the end of the central tube away from the sealing plate. Four sealing rods are installed in a circumferential array on the outer side wall of the sealing plate, and each sealing rod is inserted between two adjacent inner modules. At the same time, the sealing rod can abut against the L-shaped fork plate. A cover plate that abuts against the inner module is provided on the side of the sealing plate away from the central tube, and the cover plate is inserted into the sealing rod. A vent hole is opened transversely through the side surface of each sealing rod, and the vent hole is connected to the central tube through the cover plate. A spring is also fixedly connected between the cover plate and the sealing plate.

[0013] Preferably, the pushing structure includes a connecting plate, and the connecting plate is fixedly connected to the outer side wall of the sliding tube. Two symmetrically positioned electric push rods are installed on the side of the connecting plate away from the sealing plate, and the electric push rods are fixedly connected to the inner wall of the outer shell. Four elastic telescopic rods are arrayed on the outer side wall of the central tube, and each elastic telescopic rod is rotatably connected to the central tube. At the same time, the end of each elastic telescopic rod away from the central tube is rotatably connected to the corresponding inner module in a downward angle.

[0014] Preferably, each of the outer modules has a second inclined block fixed to the side near the block, and four first inclined blocks are arranged in a circumferential array on the outer wall of the block, with each first inclined block abutting against the inclined surface of the second inclined block at the corresponding position.

[0015] Preferably, the static mold module includes a static mold shell, a concave mold shell welded to the side of the static mold shell near the moving mold module, and the end of the concave mold shell away from the static mold shell can abut against the outer module. An elastic sealing ring is slidably connected to the end of the concave mold shell near the outer module, and the elastic sealing ring can abut against the bottom of the inner cavity of the sealing cavity. An elastic pusher is installed between the elastic sealing ring and the concave mold shell. An air suction pipe is fixedly connected to the end of the concave mold shell away from the moving mold module. An electric sealing device is installed between the air suction pipe and the concave mold shell. Four hydraulic dampers are jointly installed at the ends of the four static mold modules away from the moving mold modules, and the other end of the hydraulic damper is connected to the inner wall of the device shell. A plurality of external pipe holes are fixedly connected to the outer wall of the hydraulically driven outer side. A sliding door is slidably connected to the outer wall of the device shell laterally.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] After the moving mold module and the stationary mold module are closed by hydraulic drive, the elastic sealing ring ensures the sealing of the injection cavity. The shell is formed by vacuuming and high-pressure injection. During demolding, the electric push rod drives the sliding tube to move axially through the connecting plate. The inclined plane transmission of inclined block one and inclined block two converts the axial thrust into the radial component force, so that the four outer modules expand outward synchronously to release the constraint of the outer wall of the shell. At the same time, the central tube pulls the inner module to contract towards the center through the elastic telescopic rod two to release the internal clamping force, forming a bidirectional suspension state inside and outside the shell. The air pressure demolding structure pushes the sealing rod to slide to the vent hole conduction position during the movement of the central tube. The high-pressure gas is sprayed out instantly and forms an air cavity between the inner module and the shell, and the ejection force is applied evenly. After the annular water bladder is filled with water and expands, it flexibly covers the outer wall of the shell. The vibration motor drives the bidirectional sliding piston to reciprocate at high frequency in the C-shaped square tube, which causes the hydraulic pressure of the connecting tube to fluctuate alternately. This causes the annular water bladder to produce alternating expansion and contraction with opposite phases in different parts, forming an alternating rocking and kneading force on the shell surface, which completely destroys the vacuum adsorption effect. Attached Figure Description

[0018] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

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

[0020] Figure 2 This is a schematic diagram of the internal structure of the device housing of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the moving mold module of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the outer shell of the present invention;

[0023] Figure 5 This is a schematic cross-sectional view of the outer casing of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0025] Figure 7 This is a cross-sectional view of the second elastic telescopic rod of the present invention;

[0026] Figure 8 For the present invention Figure 5 Enlarged view of point B in the middle;

[0027] Figure 9 For the present invention Figure 5 Enlarged view of point C in the middle;

[0028] Figure 10 This is a schematic diagram of the structure of the present invention after removing one external module;

[0029] Figure 11 This is a schematic diagram of the structure of the present invention after removing one internal module;

[0030] Figure 12 This is a cross-sectional view of the C-shaped square tube of the present invention.

[0031] Figure 13 For the present invention Figure 4 Enlarged view at point D;

[0032] Figure 14 This is a schematic diagram of the static mold module of the present invention;

[0033] Figure 15 This is a schematic diagram of the structure of the housing to be injection molded according to the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Hydraulic drive; 2. Moving mold module; 3. Static mold module; 4. Outer shell; 5. Support frame; 6. Outer module; 7. Annular water bladder; 8. Elastic connecting gasket; 9. Elastic bottom sealing gasket; 10. Sealing cavity; 11. Elastic push rod; 12. Mold parting line; 13. Cooling cavity; 14. Elastic telescopic rod one; 15. Conduit; 16. Converging pipe; 17. C-shaped square tube; 18. Liquid inlet pipe; 19. Bidirectional sliding piston; 20. Vibration motor; 21. Gas delivery pipe; 22. Sliding pipe; 23. Square block; 24. Angled block one; 25. Angled block two; 26. Sealing plate; 2 7. Inclined slide; 28. Inner module; 29. ​​L-shaped fork plate; 30. Sealing plate; 301. Sealing rod; 302. Vent hole; 31. Spring; 32. Cover plate; 33. Central tube; 34. Elastic telescopic rod II; 35. Hydraulic damper; 36. Outer pipe hole; 37. Device housing; 38. Sliding door; 39. Positioning cylinder; 40. Connecting plate; 41. Electric push rod; 42. Static mold housing; 43. Concave mold housing; 44. Elastic sealing ring; 45. Suction pipe; 46. Electric sealing device; 47. Housing; 48. Insertion shell; 49. Steering device. 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] Please see Figures 1-15The present invention provides a technical solution: an injection molding device for a laser intelligent bird repeller housing that is easy to demold, including a device housing 37, a hydraulic drive 1 installed on the inner wall of the device housing 37, four moving mold modules 2 welded on one side of the hydraulic drive 1, and four stationary mold modules 3 installed on the inner wall of the device housing 37 away from the moving mold modules 2, and each stationary mold module 3 is adapted to the moving mold module 2.

[0038] The moving mold module 2 includes a shell 4, which is welded to the hydraulic drive 1. A support frame 5 is fixed to the side of the shell 4 away from the hydraulic drive 1. Four outer modules 6 are arranged in a circumferential array inside the cavity of the support frame 5. The four outer modules 6 can move closer to or away from the center at the same time. An annular water bladder 7 is installed on the side of the four outer modules 6 away from the shell 4. The chamber of the annular water bladder 7 connected to each outer module 6 is independent. An elastic connecting pad 8 is fixed between two adjacent outer modules 6. The elastic connecting pad 8 is sealed to the annular water bladder 7. An elastic bottom sealing pad 9 is fixed to the end of the four outer modules 6 near the shell 4. The elastic bottom sealing pad 9 is fixed to the elastic connecting pad 8. A positioning cylinder 39 is installed on the side of the elastic bottom sealing pad 9 away from the outer module 6. A pneumatic demolding structure is inserted into the cavity of the positioning cylinder 39.

[0039] A sealing plate 26 is movably connected between the four outer modules 6. Four inclined sliding grooves 27 are provided at the corner of the sealing plate 26 away from the outer shell 4. An inner module 28 is slidably connected in the cavity of each inclined sliding groove 27. An L-shaped fork plate 29 is slidably connected between adjacent inner modules 28. Pushing structures with different positions are provided in the cavity of the inner module 28 and the cavity of the outer module 6, which can push the four outer modules 6 to separate while also pushing the four inner modules 28 to move closer to each other.

[0040] Specifically, the laser intelligent bird repeller consists of a housing 47, a plug-in housing 48, and a steering device 49. The housing 47 is the part to be injection molded, and the plug-in housing 48 is plugged into one end of the housing 47. The housing 47 is used to install several intelligent bird repeller modules. Two identical housings 47 are installed on both sides of the steering device 49 for collaborative work. The hydraulic drive 1 serves as the main power source, which can smoothly push the moving mold module 2 towards the stationary mold module 3 and make them come into close contact. Thus, the moving mold module 2 and the stationary mold module 3 are combined to form a closed rectangular cylindrical injection mold cavity. This cavity structure is specifically designed for the shape of the laser head housing 47 of the laser bird repeller. The stationary mold module 3 has a thermosetting plastic hot melt injection device integrated inside to provide molten injection raw materials. After the moving mold module 2 and the stationary mold module 3 are merged and locked, the cavity space formed between them is first vacuumed to remove air and avoid the generation of bubbles. Then, high-pressure injection molding can be performed to ensure the density and surface quality of the molded housing 47.

[0041] When the four outer modules 6 close together towards the center, the lateral space between any two adjacent outer modules 6 is completely sealed under the pressure of their tight fit. The sealing plate 26, as a connecting component, is also subjected to the centripetal pressure of the surrounding four outer modules 6, resulting in a complete seal between the outer module 6 and the sealing plate 26. This creates an injection cavity with excellent airtightness, facilitating the suction of negative pressure and subsequent injection filling of the cavity formed between the outer modules 6. Furthermore, after the cavity between the outer module 6 and the inner module 28 is injection molded, the thermosetting plastic undergoes a certain degree of volume shrinkage during cooling and solidification. This significantly reduces the adhesion between the outer wall of the molded shell 47 and the inner wall of the outer module 6, and may even cause slight separation from the inner surface of the outer module 6 under shrinkage. Therefore, after the shell 47 between the outer module 6 and the inner module 28 is completely solidified, it can be activated by the push structure. This causes the four outer modules 6 to move synchronously away from the inner module 28, i.e., to expand outwards. This removes the rigid constraint of the outer modules 6 on the outer side of the already formed shell 47 in the center, reserving space for subsequent demolding. As the outer modules 6 move away from each other, the elastic connecting pads 8 on the side walls of the outer modules 6 can continuously seal the gaps around the four outer modules 6 and the bottom gaps. During the outward movement of the outer modules 6, the annular water bladder 7, the elastic connecting pads 8, and the elastic bottom sealing pads 9 will all undergo corresponding slight stretching and deformation based on their own elastic material properties, thereby adapting to the displacement changes of the outer modules 6 and maintaining uninterrupted connection. At the same time, after the shell 47 in the center of the outer modules 6 is formed and the outer modules 6 expand slightly, high-pressure water can be injected into the annular water bladder 7, causing the annular water bladder 7 to expand and flexibly compress and seal the outer wall of the formed shell 47, so that the space enclosed by the outer modules 6 and the shell 47 is always kept in a fluid-sealed state.

[0042] In this embodiment, each outer module 6 has a sealing cavity 10 on the side near the annular water bladder 7, and the sealing cavity 10 is located on the side of the annular water bladder 7 near the inner module 28. The sealing cavity 10 can be inserted into the static mold module 3. Each sealing cavity 10 has a mold parting line 12 on the side away from the annular water bladder 7. Two symmetrical elastic push rods 11 are fixed between each outer module 6 and the inner wall of the support frame 5. Four elastic telescopic rods 14 are fixed in a circumferential array on the side of the support frame 5 away from the outer shell 4. Each elastic telescopic rod 14 is fixed to the corresponding outer module 6. Each outer module 6 has a cooling cavity 13 that communicates with the annular water bladder 7. Each outer module 6 also has a conduit 15 that communicates with the cooling cavity 13 fixed to the outer wall of the outer shell 4. The conduit 15 is inserted into the interior of the outer shell 4.

[0043] In this embodiment, a C-shaped square tube 17 is fixedly connected to the inner wall of the outer shell 4. A bidirectional sliding piston 19 is slidably connected to the center of the C-shaped square tube 17, and the bidirectional sliding piston 19 divides the chamber of the C-shaped square tube 17 into two independent half chambers. A vibration motor 20 is fixedly connected to the outer wall of the bidirectional sliding piston 19. Two symmetrically positioned liquid inlet pipes 18 are fixedly connected to the side of the C-shaped square tube 17 away from the support frame 5, and the two liquid inlet pipes 18 are not connected to each other. One end of the conduit 15 on each outer module 6 is fixedly connected to a converging pipe 16. Each converging pipe 16 is fixedly connected to the C-shaped square tube 17, and the positions of the converging pipes 16 on the two opposite conduits 15 and the C-shaped square tube 17 are also distributed in a relative manner.

[0044] Specifically, both the elastic telescopic rod 14 and the elastic push rod 11 provide a reliable elastic reset function for the outer module 6. When the pushing structure drives the outer modules 6 to expand away from each other, these elastic elements accumulate energy. If the pushing structure removes its thrust and no longer pushes the outer modules 6, the elastic telescopic rod 14 and the elastic push rod 11 will use their rebound force to push each outer module 6 together to bring them closer together and restore their initial contact state. Simultaneously, referencing... Figure 6 The parting line 12 is the parting surface where the moving mold module 2 and the stationary mold module 3 contact after they are connected and locked. The expanded annular water bladder 7 will be located to the right of the parting line 12. After the moving mold module 2 and the stationary mold module 3 abut against each other and close, the elastic sealing ring 44 on the stationary mold module 3 will be pushed and, through its own elasticity, tightly abut against the bottom of the sealing cavity 10, thus creating a physical barrier to isolate and protect the annular water bladder 7. This ensures that during subsequent vacuuming and high-pressure injection molding, the annular water bladder 7 is isolated outside the molding cavity and will not communicate with the injection space formed between the outer module 6 and the inner module 28, thereby protecting the bladder from damage by high-temperature and high-pressure plastic. Then, after the moving mold module 2 and the stationary mold module 3 are completed... After the injection molding of the shell 47, the parting line 12 will first separate from the elastic sealing ring 44. Then, by filling the annular water bladder 7 with water, it expands, allowing the annular water bladder 7 to cross the parting line and directly cover and clamp the outer surface of the shell 47. At the same time, because the parting line usually forms a thicker plastic flash or mold line during injection molding, this part can withstand the extrusion pressure generated by the further expansion of the annular water bladder 7 without easily deforming. Then, when the moving mold module 2 and the stationary mold module 3 are separated, the annular water bladder 7 will not only firmly clamp the shell 47 after molding, but the expansion deformation force of the annular water bladder 7 will also apply a pushing force to the moving mold module 2 and the stationary mold module 3 from the side, thereby helping the mold to separate smoothly.

[0045] The inlet pipe 18 can deliver water to the interior of the C-shaped square tube 17. After the water enters the interior of the C-shaped square tube 17, due to the physical separation effect of the bidirectional sliding piston 19, the upper and lower chambers of the C-shaped square tube 17 remain disconnected. When the moving mold module 2 and the stationary mold module 3 are completely separated, and the molded shell 47 needs to be completely peeled off from the outer wall of the inner module 28, the outer module 6 will be moved away from the inner module 28 by the pushing structure to reserve external shaking space for the loosening of the shell 47. Air is injected into the outer wall of the inner module 28 and the shell 47 through the air pressure demolding structure for demolding. At the same time, high-pressure gas also seeps into and flows into the gap between the outer module 6 and the shell 47. When the annular water bladder 7, which is filled with water inside, flexibly seals and clamps the outer wall of the shell 47, the vibration motor 20 is started to drive the bidirectional sliding piston 19 to swing up and down at high frequency inside the C-shaped square tube 17. At the same time, the reciprocating movement of the bidirectional sliding piston 19 causes the fluid pressure at the upper and lower ends of the C-shaped square tube 17 to change alternately. This will cause the fluid pressure at the upper and lower ends of the C-shaped square tube 17 to change. The four conduits 15 connected to 7 will experience fluctuating internal pressures. Since each pair of conduits 15 connected to the C-shaped square tube 17 are on opposite sides (i.e., connecting to the upper and lower cavities respectively), when the internal pressure of one set of conduits 15 increases, the internal pressure of the opposite set of conduits 15 will decrease. This synergistic effect will cause the annular water bladder 7 connected to the corresponding part of the conduit 15 through the cooling chamber 13 to undergo slight expansion and contraction. The annular water bladder 7 on the opposite side will undergo completely opposite movement. This ensures that while maintaining the overall sealing effect of the formed shell 47, the annular water bladder 7 uses the alternating expansion thrust of each part of the annular water bladder 7 to continuously shake and rub the surface of the formed shell 47 from side to side. This loosens the connection interface between the formed shell 47 and the inner module 28, completely destroying the vacuum adsorption force and preventing tight adhesion. Combined with the air blowing action of the air pressure demolding structure, the formed shell 47 can be demolded more easily with minimal resistance.

[0046] In this embodiment, the pneumatic demolding structure includes a sliding tube 22, which is slidably connected to the cavity of the positioning cylinder 39 and is also slidably connected to the sealing plate 26. An air supply pipe 21 is slidably connected to the side of the sliding tube 22 away from the sealing plate 26, and the air supply pipe 21 is fixedly connected to the outer shell 4. A block 23 is fixedly connected to the outer wall of the side of the sliding tube 22 near the sealing plate 26. A central tube 33 is provided on the side of the sealing plate 26 away from the block 23, and the central tube 33 is fixedly connected to the air supply pipe 21. In this embodiment, a sealing plate 30 is fixedly connected to one end of the central tube 33 away from the sealing plate 26. Four sealing rods 301 are arranged in a circumferential array on the outer side wall of the sealing plate 30, and each sealing rod 301 is inserted between two adjacent inner modules 28. At the same time, the sealing rods 301 can abut against the L-shaped fork plate 29. A cover plate 32 that abuts against the inner module 28 is provided on the side of the sealing plate 30 away from the central tube 33, and the cover plate 32 is inserted into the sealing rods 301. A vent hole 302 is opened transversely through the side surface of each sealing rod 301, and the vent hole 302 is connected to the central tube 33 through the cover plate 32. A spring 31 is also fixedly connected between the cover plate 32 and the sealing plate 30.

[0047] Specifically, the gas supply pipe 21 serves as the gas source channel, delivering high-pressure gas from the outside to the internal chamber of the central pipe 33 via the sliding pipe 22, and then referring to... Figure 9 In the initial closed state, when the sealing rod 301 is in close contact with the surface of the L-shaped fork plate 29, the vent 302 is blocked by the L-shaped fork plate 29 or the inner module assembly, so the gas delivered from the central tube 33 to the inside of the cover plate 32 will not be discharged, thus achieving a sealing and pressure-maintaining function. However, if the central tube 33 is pushed towards the cover plate 32 under the action of external force, since the front end of the cover plate 32 is in direct contact with the bottom surface of the inner wall of the internally formed housing 47, and the position of the housing 47 is fixed, the cover plate 32 will not move accordingly. The sealing rod 301, which is fixed to the central tube 33, will overcome the resistance of the spring 31. The force slides forward unilaterally within the cavity of the cover plate 32. When the sealing rod 301 slides to a certain stroke, the vent 302 on the sealing rod 301 will move out of the obstruction area and connect with the air passage of the central tube 33. This causes the high-pressure gas accumulated inside the central tube 33 to be ejected outward from the slot of the vent 302. This high-pressure gas quickly fills the space between the outer surface of the inner module 28 and the inner wall of the shell 47 adsorbed on its surface, thereby forming a high-pressure air cushion between the inner module 28 and the shell 47. The expansion thrust of the high-pressure gas forcefully pushes out the formed shell 47, assisting in demolding.

[0048] In this embodiment, the pushing structure includes a connecting plate 40. The connecting plate 40 is fixedly connected to the outer wall of the sliding tube 22. Two symmetrically positioned electric push rods 41 are installed on the side of the connecting plate 40 away from the sealing plate 26, and the electric push rods 41 are fixedly connected to the inner wall of the outer shell 4. Four elastic telescopic rods 34 are arrayed on the outer wall of the central tube 33, and each elastic telescopic rod 34 is rotatably connected to the central tube 33. At the same time, the end of each elastic telescopic rod 34 away from the central tube 33 is rotatably connected to the corresponding inner module 28 in a downward direction. In this embodiment, a second inclined block 25 is fixedly connected to the side of each outer module 6 near the block 23. Four first inclined blocks 24 are arrayed on the outer wall of the block 23, and each first inclined block 24 abuts against the inclined surface of the second inclined block 25 at the corresponding position.

[0049] Specifically, when the injection molding cooling is complete and demolding is required on the moving mold module 2, the electric push rod 41 is activated and smoothly pushes the sliding tube 22 away from the outer shell 4 through the connecting plate 40. During the movement of the sliding tube 22, the block 23 and the central tube 33 fixed to it will also move synchronously. Then, during the movement of the block 23, the inclined block 24 on it will slide against the inclined side of the inclined block 25 on the outer module 6, using the wedge principle to convert the axial thrust into a radial component force, so that the inclined block 25 drives the four outer modules 6 to be smoothly pushed away from the sealing plate 26 (i.e., expand outward), freeing up space for the shell 47. Then, as the central tube 33 is pushed further, the angle of the elastic telescopic rod 34 connected to the central tube 33 will change, moving towards a vertical state, thereby synchronously pulling the four inner modules 28 towards the central axis of the central tube 33 through the linkage mechanism to slide and retract. However, when molding When the inner module 28 is temporarily unable to be pulled due to excessive adhesion between the shell 47 and the inner module 28, the elastic telescopic rod 34 will be stretched and store elastic restoring force to allow the central tube 33 to continue moving without getting stuck. Then, as the central tube 33 continues to move, the aforementioned air valve mechanism will be triggered, causing the slot of the exhaust port 302 to open, thereby spraying high-pressure gas outward for inflation and demolding. As the external annular water bag 7 uses the pressure difference to shake the molded shell 47 from side to side, the adhesion force is broken, thereby loosening the shell 47 and allowing it to be demolded smoothly. When the inner module 28 is successfully separated from the molded shell 47, the elastic telescopic rod 34 releases its elastic force, pulling the inner module 28 to retract rapidly towards the center, thereby completely releasing the internal and external constraints of the molded shell 47 and achieving safe demolding. Furthermore, when removing the molded shell 47 later, the retracted inner module will not obstruct the space.

[0050] In this embodiment, the stationary mold module 3 includes a stationary mold shell 42. A concave mold shell 43 is welded to the side of the stationary mold shell 42 near the moving mold module 2. The end of the concave mold shell 43 away from the stationary mold shell 42 can abut against the outer module 6. An elastic sealing ring 44 is slidably connected to the end of the concave mold shell 43 near the outer module 6. The elastic sealing ring 44 can abut against the bottom of the inner cavity of the sealing cavity 10. An elastic pusher is installed between the elastic sealing ring 44 and the concave mold shell 43. An air suction pipe 45 is fixedly connected to the end of the concave mold shell 43 away from the moving mold module 2. An electric sealing device 46 is installed between the air suction pipe 45 and the concave mold shell 43. Four hydraulic dampers 35 are installed together at the ends of the four stationary mold modules 3 away from the moving mold module 2. The other end of the hydraulic damper 35 is connected to the inner wall of the device shell 37. Several external pipe holes 36 are fixedly connected to the outer wall of the hydraulic drive 1. A sliding door 38 is slidably connected to the outer wall of the device shell 37.

[0051] Specifically, when the moving mold module 2 and the stationary mold module 3 approach and abut against each other under hydraulic drive, the cavity mold housing 43 first physically abuts against the end face of the outer module 6. Then, the elastic pusher built into the cavity mold housing 43 flexibly pushes the elastic sealing ring 44 into the sealing cavity where the parting line 12 of the outer module 6 is located, so that a complete airtight seal is formed between the mating surfaces of the moving mold module 2 and the stationary mold module 3. The suction pipe 45 can be connected to an industrial pressure pump. After the moving mold module 2 and the stationary mold module 3 are connected and the seal is confirmed, the electric sealing device 46 opens the valve and then applies strong pressure to the cavity formed between the cavity mold housing 43 and the outer module 6 through the suction pipe 45. A vacuum environment is created, and then the thermosetting plastic hot melt injection device built into the cavity 43 injects molten thermosetting plastic into the vacuum cavity of the cavity 43. After cooling and molding, the moving mold module 2 and the stationary mold module 3 will slowly separate to open the mold. At the moment when the moving mold module 2 and the stationary mold module 3 come into contact, the stationary mold module 3 will be pushed backward a buffer distance. During the pushing process, the hydraulic damper 35 behind the stationary mold module 3 will compress and absorb energy. This ensures the pressing precision of the moving mold module 2 and the stationary mold module 3, while effectively preventing damage to the precision mold equipment due to rigid impact contact between the moving mold module 2 and the stationary mold module 3.

[0052] Working principle: First, the hydraulic drive 1 pushes the moving mold module 2 and the stationary mold module 3 to make tight contact and completes the seal using the elastic sealing ring 44. Then, thermosetting plastic is injected into the vacuum cavity surrounded by the outer module 6 and the inner module 28. After the shell 47 cools and solidifies, causing shrinkage, the electric push rod 41 pushes the sliding tube 22 and the square block 23 to move axially through the connecting plate 40. The inclined plane transmission of the first inclined block 24 and the second inclined block 25 causes the four outer modules 6 to expand radially outward synchronously. At the same time, the square block 23 drives the central tube 33 to move. The elastic telescopic rod 34 pulls the four inner modules 28 to contract towards the center, so that the molded shell 47 is in the inner and outer positions. In the bidirectional suspension state, during this process, the movement of the central tube 33 causes the sealing rod 301 to slide within the cover plate 32 and open the exhaust port 302, spraying high-pressure gas between the inner module 28 and the shell 47 to establish an air cushion. At the same time, the annular water bladder 7 expands with water to flexibly clamp the outer wall of the shell 47, and in conjunction with the vibration motor 20, drives the bidirectional sliding piston 19 to reciprocate within the C-shaped square tube 17, causing the hydraulic pressure within each guide tube 15 to fluctuate alternately, driving the annular water bladder 7 to apply alternating swaying thrust to the shell 47. Thus, under the synergistic effect of pneumatic ejection and hydraulic swaying, the vacuum adsorption force is completely eliminated, realizing the automatic and non-destructive demolding of the deep cavity shell 47.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A laser-driven intelligent bird repeller housing injection molding device for easy demolding, comprising a housing (37), wherein a hydraulic drive (1) is installed on the inner wall of the housing (37), characterized in that: Four moving mold modules (2) are welded to one side of the hydraulic drive (1), and four stationary mold modules (3) are installed on the inner wall of the device housing (37) away from the moving mold modules (2), and each stationary mold module (3) is compatible with the moving mold module (2). The moving module (2) includes a shell (4), which is welded to the hydraulic drive (1). A support frame (5) is fixed to the side of the shell (4) away from the hydraulic drive (1). Four outer modules (6) are arranged in a circumferential array inside the cavity of the support frame (5). The four outer modules (6) can move closer to or away from the center at the same time. An annular water bladder (7) is installed on the side of the four outer modules (6) away from the shell (4). The cavity of the annular water bladder (7) connected to each outer module (6) is... Each chamber is independent. An elastic connecting pad (8) is fixed between two adjacent outer modules (6), and the elastic connecting pad (8) is sealed to the annular water bladder (7). An elastic bottom sealing pad (9) is fixed to one end of each of the four outer modules (6) near the outer shell (4), and the elastic bottom sealing pad (9) is fixed to the elastic connecting pad (8). A positioning cylinder (39) is installed on the side of the elastic bottom sealing pad (9) away from the outer module (6), and a pneumatic demolding structure is inserted into the cavity of the positioning cylinder (39). A sealing plate (26) is movably connected between the four outer modules (6). Four inclined slide grooves (27) are provided at the corner of the sealing plate (26) away from the outer shell (4). An inner module (28) is slidably connected in the cavity of each inclined slide groove (27). An L-shaped fork plate (29) is slidably connected between adjacent inner modules (28). Pushing structures with different positions are provided in the cavity of the inner module (28) and the cavity of the outer module (6), which can push the four outer modules (6) to separate while also pushing the four inner modules (28) to move closer to each other. The pneumatic demolding structure includes a sliding tube (22), which is slidably connected to the cavity of the positioning cylinder (39) and is also slidably connected to the sealing plate (26). A gas supply pipe (21) is slidably connected to the side of the sliding tube (22) away from the sealing plate (26), and the gas supply pipe (21) is fixedly connected to the outer shell (4). A block (23) is fixedly connected to the outer wall of the side of the sliding tube (22) close to the sealing plate (26). A central tube (33) is provided on the side of the sealing plate (26) away from the block (23), and the central tube (33) is fixedly connected to the gas supply pipe (21). A sealing plate (30) is fixedly connected to one end of the central tube (33) away from the sealing plate (26). Four sealing rods (301) are arranged in a circumferential array on the outer side wall of the sealing plate (30), and each sealing rod (301) is inserted between two adjacent inner modules (28). At the same time, the sealing rod (301) can abut against the L-shaped fork plate (29). A cover plate (32) that abuts against the inner module (28) is provided on the side of the sealing plate (30) away from the central tube (33). The cover plate (32) is inserted into the sealing rod (301). A vent hole (302) is opened transversely through the side surface of each sealing rod (301). The vent hole (302) is connected to the central tube (33) through the cover plate (32). A spring (31) is also fixedly connected between the cover plate (32) and the sealing plate (30). The pushing structure includes a connecting plate (40), and the connecting plate (40) is fixedly connected to the outer side wall of the sliding tube (22). Two electric push rods (41) are installed on the side of the connecting plate (40) away from the sealing plate (26), and the electric push rods (41) are fixedly connected to the inner wall of the outer shell (4). Four elastic telescopic rods (34) are arrayed on the outer side wall of the central tube (33), and each elastic telescopic rod (34) is rotatably connected to the central tube (33). At the same time, the end of each elastic telescopic rod (34) away from the central tube (33) is rotatably connected to the corresponding inner module (28) in a downward direction. Each of the outer modules (6) has a second inclined block (25) fixed to one side of the block (23). The outer wall of the block (23) is equipped with four first inclined blocks (24) arranged in a circular array, and each first inclined block (24) abuts against the inclined surface of the second inclined block (25) at the corresponding position.

2. The laser intelligent bird repeller shell injection molding device of claim 1, wherein: Each of the outer modules (6) has a sealing cavity (10) on the side near the annular water bladder (7), and the sealing cavity (10) is located on the side of the annular water bladder (7) near the inner module (28), and the sealing cavity (10) can be inserted into the static mold module (3). Each of the sealing cavities (10) has a mold parting line (12) on the side away from the annular water bladder (7). Two symmetrical elastic push rods (11) are fixed between each outer module (6) and the inner wall of the support frame (5). Four elastic telescopic rods (14) are fixed in a circular array on the side of the support frame (5) away from the outer shell (4). Each elastic telescopic rod (14) is fixed to the corresponding outer module (6). A cooling cavity (13) communicating with the annular water bag (7) is opened inside each outer module (6). A conduit (15) communicating with the cooling cavity (13) is also fixed to the outer wall of each outer module (6). The conduit (15) is inserted into the interior of the outer shell (4).

3. The laser intelligent bird repeller shell injection molding device of claim 2, wherein: The inner wall of the outer shell (4) is fixed with a C-shaped square tube (17). A bidirectional sliding piston (19) is slidably connected to the center of the C-shaped square tube (17), and the bidirectional sliding piston (19) divides the chamber of the C-shaped square tube (17) vertically. A vibration motor (20) is fixed to the outer wall of the bidirectional sliding piston (19). Two symmetrical liquid inlet pipes (18) are fixed to the side of the C-shaped square tube (17) away from the support frame (5), and the two liquid inlet pipes (18) are not connected to each other. One end of the conduit (15) on each outer module (6) is fixed with a converging pipe (16). Each converging pipe (16) is fixed to the C-shaped square tube (17), and the converging pipes (16) on the two conduits (15) with opposite positions are also fixed to the C-shaped square tube (17) in the same position.

4. The laser intelligent bird repeller shell injection molding device of claim 2, wherein: The stationary mold module (3) includes a stationary mold shell (42). A concave mold shell (43) is welded to the side of the stationary mold shell (42) near the moving mold module (2). The end of the concave mold shell (43) away from the stationary mold shell (42) can abut against the outer module (6). An elastic sealing ring (44) is slidably connected to the end of the concave mold shell (43) near the outer module (6). The elastic sealing ring (44) can abut against the bottom of the inner cavity of the sealing cavity (10). An elastic pusher is installed between the elastic sealing ring (44) and the concave mold shell (43). An air suction pipe (45) is fixedly connected to one end of the mold shell (43) away from the moving mold module (2). An electric sealing device (46) is installed between the air suction pipe (45) and the concave mold shell (43). Four hydraulic dampers (35) are installed together at one end of the four stationary mold modules (3) away from the moving mold module (2). The other end of the hydraulic damper (35) is connected to the inner wall of the device housing (37). Several external pipe holes (36) are fixedly connected to the outer wall of the hydraulic drive (1). A sliding door (38) is slidably connected to the outer wall of the device housing (37).

Images