Injection molding device convenient to demould and used for producing automotive interior plastic parts
By designing frame components and vibration components in the injection molding device, the problem of excessive cooling of plastic melt in the low-pressure injection molding process is solved, the rapid, stable lifting and precise positioning of the mold is achieved, the uniform distribution and separation of plastics is promoted, and the quality and production efficiency of injection molded parts are improved.
Patent Information
- Application Number
- CN202510473006.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2025-05-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the production of automotive interior plastic parts, the low-pressure injection molding process causes the plastic melt to cool too quickly and reduce the fluidity, resulting in rough surfaces and prone to cracking, scratches, wear and even cracking during demolding.
An injection molding device including a frame assembly and a vibration assembly is designed. The frame assembly realizes rapid, stable lifting and precise positioning of the mold through lifting flat frames, hydraulic rods and other components. The vibration assembly drives the vibrating plate body to generate slight vibrations through the driving motor, promoting the uniform distribution and separation of molten plastic.
It effectively prevents the gaps caused by vibration of the mold, improves the quality and consistency of the injection molded parts, promotes gas discharge, reduces internal defects and bubbles, improves production efficiency, and reduces waste rate.
Smart Images
Figure CN119974366A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of injection molds, in particular to an injection molding device for producing automobile interior plastic parts which is easy to demould. Background Art
[0002] As an important part of modern automobile manufacturing, the production technology and equipment of automobile interior plastic parts have been continuously developed and improved. As one of the core equipment for the production of automobile interior plastic parts, low-pressure injection molds have made significant progress in technology and design in recent years. Low-pressure injection molds use advanced hydraulic transmission technology to achieve smooth opening and closing and precise positioning of the mold by precisely controlling the pressure and flow of the hydraulic system. This technology not only ensures the stability of the injection molding process, but also makes the operation of the mold easier and faster. At the same time, low-pressure injection molding technology, with its low pressure and low temperature characteristics, effectively avoids defects such as flash and burrs that may occur in the traditional high-pressure injection molding process, and improves the surface quality and dimensional accuracy of plastic parts.
[0003] In the production process of automobile interior plastic parts, traditional injection molding technology has many shortcomings. For example, the low-pressure injection molding process commonly used in the manufacture of automobile interior plastic parts has the characteristic of lower discharge pressure compared with the traditional injection molding process. Due to the low injection pressure, the plastic material flows more slowly in the mold, which makes the cooling and solidification time of low-pressure injection molding shorter (5 to 50 seconds), which may cause the plastic melt to cool too quickly and reduce fluidity. As a result, the reproducibility of the surface of the plastic part to the mold cavity surface becomes poor and the surface becomes rough. During the demolding process, due to the reduced stress of the molded part, the plastic part is more likely to crack when it is subjected to stress, which can easily cause scratches, wear and even rupture on the surface of the plastic part, affecting product quality. Summary of the invention
[0004] The object of the present invention is to provide an injection molding device for producing automobile interior plastic parts which is easy to demould, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above object, the present invention provides the following technical solution: an injection molding device for producing automobile interior plastic parts that is easy to demold, comprising: A base, a connecting rod is arranged on the upper surface of the base, a mold frame mechanism is arranged on the upper surface of the connecting rod, the mold frame mechanism includes a frame assembly and a vibration assembly, the frame assembly includes: a lifting frame, the lifting frame is fixedly installed on the upper surface of the connecting rod, a fixed ring frame is arranged at the center of the lifting frame, a central movable top plate is arranged at the center of the fixed ring frame, a connecting ring plate is arranged on the upper surface of the central movable top plate, a limiting cylinder is arranged at the center of the connecting ring plate, and a feeding cylinder is arranged above the limiting cylinder; The vibration component includes: a driving motor, which is arranged on the upper surface of the base, a rotating engaging disk is arranged on the output shaft of the driving motor, a fixed engaging disk is arranged on the upper surface of the rotating engaging disk, a vibration plate body is arranged on the upper surface of the fixed engaging disk, four buffer springs are arranged on the upper surface of the vibration plate body, and a bottom plate seat is arranged on the upper surface of the buffer spring.
[0006] Furthermore, a side frame body is provided on the upper surface of the lifting platform, a hydraulic rod is provided on the upper surface of the side frame body, an anchor plate is provided on one side surface of the hydraulic rod, the discharge port of the feeding cylinder is located inside the limiting cylinder, a limiting plate is provided on the surface of the discharge port of the feeding cylinder, a feeding motor is provided on the upper surface of the feeding cylinder, and a feeding hole is provided on one side surface of the feeding cylinder.
[0007] Furthermore, a barrel annular plate is sleeved on the surface of the feeding barrel, and two fixed vertical rods cooperating with the barrel annular plate are provided on the upper surface of the lifting platform. Connecting plates are provided on both sides of the barrel annular plate, and connecting springs are provided between the connecting plates and the fixed vertical rods.
[0008] Furthermore, the frame assembly also includes a limiting assembly, and the limiting assembly includes: a central movable bottom plate, the central movable bottom plate is located below the central movable top plate, and an upper mold is arranged at the center of the central movable bottom plate.
[0009] Furthermore, a spring rod is arranged between the central movable top plate and the central movable bottom plate, the bottom surface of the central movable top plate and the upper surface of the central movable bottom plate are both provided with mutually matching material conveying sleeves, and the bottom surface of the central movable bottom plate is provided with four positioning sleeves.
[0010] Furthermore, a tube bottom ring piece is provided on the bottom surface of the positioning sleeve, a sliding groove is provided on the upper surface of the tube bottom ring piece, a sliding block is provided inside the sliding groove, a connecting support rod is provided on the upper surface of the sliding block, a movable card is provided on the top surface of the connecting support rod, a plate edge roller is provided on one side surface of the movable card, a limiting box matching with the movable card is provided on the bottom surface of the fixed ring frame, a limiting card slot is provided on one side surface of the limiting box, and an inclined plate is provided below the limiting card slot.
[0011] Furthermore, a limiting bottom rod is arranged at the center of the upper surface of the vibration plate body, a limiting ring matching with the limiting bottom rod is arranged on the bottom surface of the bottom plate seat, a lower mold is arranged at the center of the upper surface of the bottom plate seat, and a positioning rod matching with the positioning sleeve is also arranged on the upper surface of the bottom plate seat.
[0012] Furthermore, connecting side plates are provided on both side surfaces of the bottom plate seat, a pushing motor is provided on the upper surface of the connecting side plates, a limiting clamping plate is provided on the end of the output shaft of the pushing motor, and a side opening matching the limiting clamping plate is provided on the side surface of the bottom plate seat.
[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In this scheme, by setting up a frame assembly, through the cooperation of the lifting platform, side frame, hydraulic rod and other components, the mold can be lifted quickly and smoothly. The limiting assembly realizes the precise positioning of the mold through the cooperation of the positioning sleeve and the positioning hole of the lower mold. At the same time, by pushing the motor to drive the limiting card to move, the tube bottom ring piece and the positioning rod on the bottom plate seat are locked, ensuring the firmness of the mold during the vibration process, effectively preventing the gap of the mold caused by vibration, and ensuring the quality and consistency of the injection molded parts. In addition, the design of the movable card and the limiting box enables the central movable bottom plate to shake synchronously with the vibration assembly during vibration, further improving the injection molding efficiency; 2. In the present scheme, a vibration component is provided, and the driving motor drives the rotating meshing disk to rotate, thereby causing the vibration plate to generate a small vibration. This vibration is transmitted to the lower mold through the bottom plate seat, and acts on the molten plastic inside the mold. The vibration helps to evenly distribute the molten plastic inside the mold, and allows the plastic parts to be quickly separated from the surface of the mold during the vibration process, so that the staff can more conveniently remove the plastic parts from the inside of the mold. At the same time, it promotes the discharge of gas, reduces the generation of internal defects and bubbles, improves the quality of injection molded parts, reduces the scrap rate, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the frame assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the feeding barrel of the present invention; Figure 4 It is a schematic diagram of the connecting side plate structure of the present invention; Figure 5 It is a schematic diagram of the structure of the vibration component of the present invention; Figure 6 It is a schematic diagram of the fixed ring frame structure of the present invention; Figure 7 It is a schematic diagram of the restriction box structure of the present invention; Figure 8 It is a schematic diagram of the structure of the material conveying sleeve of the present invention.
[0015] In the figure: 1, base; 2, connecting rod; 3, side frame; 4, hydraulic rod; 5, feeding barrel; 6, connecting ring plate; 7, bottom plate seat; 8, connecting side plate; 9, anchor plate; 10, lifting frame; 11, limiting box; 12, feeding hole; 13, feeding motor; 14, fixed vertical rod; 15, connecting spring; 16, barrel ring plate; 17, limiting barrel; 18, limiting sheet; 19, pushing motor; 20, limiting card plate; 21, side opening; 22, buffer spring; 2 3. Limiting sleeve; 24. Limiting bottom rod; 25. Lower mold; 26. Vibrating plate; 27. Fixed meshing disk; 28. Rotating meshing disk; 29. Driving motor; 30. Fixed ring frame; 31. Center movable bottom plate; 32. Movable card; 33. Positioning sleeve; 34. Connecting support rod; 35. Upper mold; 36. Tube bottom ring piece; 37. Limiting card slot; 38. Oblique plate; 39. Plate edge roller; 40. Center movable top plate; 41. Spring rod; 42. Feed sleeve. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0017] Example 1: Please refer to Figures 1 to 8 , an injection molding device for producing automobile interior plastic parts that are easy to demould, comprising: Base 1, the upper surface of the base 1 is provided with a connecting rod 2, the upper surface of the connecting rod 2 is provided with a mold frame mechanism, the mold frame mechanism includes a frame assembly and a vibration assembly, the frame assembly includes: a lifting platform 10, the lifting platform 10 is fixedly installed on the upper surface of the connecting rod 2, the upper surface of the lifting platform 10 is provided with a side frame body 3, the upper surface of the side frame body 3 is provided with a hydraulic rod 4, and one side surface of the hydraulic rod 4 is provided with an anchor plate 9, a fixed ring frame 30 is provided at the center of the lifting platform 10, a central movable top plate 40 is provided at the center of the fixed ring frame 30, and a connecting ring plate 6 is provided on the upper surface of the central movable top plate 40, and a connecting ring plate 6 is provided on the upper surface of the connecting ring frame 30. A limiting cylinder 17 is provided at the center of the ring plate 6, a feeding cylinder 5 is provided above the limiting cylinder 17, a discharge port of the feeding cylinder 5 is located inside the limiting cylinder 17, a limiting plate 18 is provided on the surface of the discharge port of the feeding cylinder 5, a feeding motor 13 is provided on the upper surface of the feeding cylinder 5, a feeding hole 12 is provided on one side surface of the feeding cylinder 5, a barrel annular plate 16 is also sleeved on the surface of the feeding cylinder 5, two fixed vertical rods 14 matched with the barrel annular plate 16 are also provided on the upper surface of the lifting platform 10, connecting plates are provided on both sides of the barrel annular plate 16, and a connecting spring 15 is provided between the connecting plate and the fixed vertical rod 14; When in use, the staff uses the anchor plate 9 to fix the fixed hydraulic rod 4. When injection molding is required, the staff starts the hydraulic rod 4 to push the lifting platform 10 and the upper mold frame mechanism to rise, so that the mold is in an open mold state. Then the staff applies the nano solution to the surface of the two molds. After the preparation work is completed, the staff puts the plastic raw material into the inside of the feeding barrel 5 from the feeding hole 12 for melting. The feeding barrel 5 is driven by the feeding motor 13 to transport the molten plastic material downward to prepare for injection into the mold. When the plastic material is ready, the hydraulic rod 4 is started again to drive the lifting platform 10 and the mold frame mechanism to descend, so that the upper mold 35 The upper and lower molds 25 are tightly closed to complete the mold closing action. At this time, the molten plastic material is injected into the mold cavity under pressure to form a plastic part. During the injection molding process, the vibration component is started under the signal drive of the staff, and the injection molding speed is increased. After the injection molding is completed and cooled, a vibration force is applied to the internal plastic to separate it from the surface of the mold. After the injection molding is completed and cooled, the hydraulic rod 4 is started again to push the lifting platform 10 and the mold frame mechanism to rise, so that the mold is in an open mold state. At this time, the staff can take the plastic part out of the mold. Subsequently, the hydraulic rod 4 drives the mold frame mechanism to reset to the initial position to prepare for the next injection molding.
[0018] The frame assembly also includes a limiting assembly, which includes: a central movable bottom plate 31, the central movable bottom plate 31 is located below the central movable top plate 40, an upper mold 35 is arranged at the center of the central movable bottom plate 31, a spring rod 41 is arranged between the central movable top plate 40 and the central movable bottom plate 31, the bottom surface of the central movable top plate 40 and the upper surface of the central movable bottom plate 31 are both provided with mutually matching feeding sleeves 42, and the bottom surface of the central movable bottom plate 31 is provided with four positioning sleeves 33, and the positioning sleeves The bottom surface of the fixing ring frame 33 is provided with a tube bottom ring piece 36, the upper surface of the tube bottom ring piece 36 is provided with a sliding groove, the interior of the sliding groove is provided with a slider, the upper surface of the slider is provided with a connecting rod 34, the top surface of the connecting rod 34 is provided with an active card 32, one side surface of the active card 32 is provided with a plate edge roller 39, the bottom surface of the fixed ring frame 30 is provided with a limiting box 11 matched with the active card 32, one side surface of the limiting box 11 is provided with a limiting card slot 37, and an inclined plate 38 is provided below the limiting card slot 37; During use, when the mold is in the mold closing state, the positioning sleeve 33 is inserted into the positioning hole of the lower mold 25, so as to realize the precise positioning of the mold. At this time, the pushing motor 19 above the two connecting side plates 8 is driven by the staff signal, so that the pushing motor 19 drives the limiting card plate 20 to move to the inner side of the bottom plate seat 7, and the pins on both sides of the limiting card plate 20 are inserted into the inside of the bottom plate seat 7 from the side opening 21. As the limiting card plate 20 moves, the slider above the tube bottom ring piece 36 is pushed to one side by the pushing effect of the pins of the limiting card plate 20, and the tube bottom ring piece 36 is locked with the positioning rod on the upper surface of the bottom plate seat 7 through the pins, so that the two molds are locked, so that there will be no gap between the two molds during the process of the vibration component applying vibration, and when the slider slides, it will bring The connecting support rod 34 above is moved to move, and when the connecting support rod 34 moves, it drives the movable card 32 above it to withdraw from the interior of the limiting box 11. At this time, the connection effect between the central movable bottom plate 31 and the fixed ring frame 30 is lost. The central movable bottom plate 31 is only fixedly connected to the bottom plate seat 7 through the positioning sleeve 33. When the vibration component below applies a vibration effect to the mold, the central movable bottom plate 31 will shake synchronously with the vibration component, and transmit the vibration effect generated by the vibration component to the feeding barrel 5 above, so that the molten plastic material inside the feeding barrel 5 will enter the interior of the mold more quickly as the feeding barrel 5 shakes up and down, and the liquid material entering the interior will maintain stronger fluidity as it shakes, which is more conducive to quickly filling the interior of the mold.
[0019] The vibration assembly includes: a driving motor 29, the driving motor 29 is arranged on the upper surface of the base 1, a rotating engagement disk 28 is arranged on the output shaft of the driving motor 29, a fixed engagement disk 27 is arranged on the upper surface of the rotating engagement disk 28, a vibration plate 26 is arranged on the upper surface of the fixed engagement disk 27, four buffer springs 22 are arranged on the upper surface of the vibration plate 26, a bottom plate seat 7 is arranged on the upper surface of the buffer spring 22, a limiting bottom rod 24 is arranged at the center of the upper surface of the vibration plate 26, and the bottom plate seat The bottom surface of the bottom plate seat 7 is provided with a limiting collar 23 matched with the limiting bottom rod 24, a lower mold 25 is provided at the center of the upper surface of the bottom plate seat 7, and a positioning rod matched with the positioning sleeve 33 is also provided on the upper surface of the bottom plate seat 7. The two side surfaces of the bottom plate seat 7 are provided with connecting side plates 8, and the upper surface of the connecting side plates 8 is provided with a driving motor 19. The end of the output shaft of the driving motor 19 is provided with a limiting card plate 20, and the side surface of the bottom plate seat 7 is provided with a side opening 21 matched with the limiting card plate 20; When the injection molding process begins, the drive motor 29 starts to drive the rotating meshing disk 28 to rotate. Due to the meshing action of the rotating meshing disk 28 and the fixed meshing disk 27, the vibrating plate 26 begins to generate slight vibrations. The buffer spring 22 plays a role in shock absorption and buffering, making the vibration more stable and controllable. The vibration of the vibrating plate 26 is transmitted to the lower mold 25 through the bottom plate seat 7, and then acts on the molten plastic inside the mold. This slight vibration helps to promote the uniform distribution and exhaust of the molten plastic inside the mold, reduce the generation of internal defects and bubbles, and through the action of the limiting component, the upper feed barrel 5 can follow the mold to shake up and down synchronously when the mold shakes, so that the molten plastic material inside can enter the mold faster, thereby solving the problems that are easy to occur in the low-pressure injection molding commonly used in the production of existing automotive interior plastic parts, such as the plastic melt cooling too fast and the reduced fluidity due to the low mold temperature, which affects the filling effect, making the surface of the plastic part rough, and finally causing the plastic part surface to be scratched, worn or even broken due to the excessive friction between the plastic part and the mold during the demolding process.
[0020] The working principle of the present invention is: When in use, the staff uses the anchor plate 9 to fix the fixed hydraulic rod 4. When injection molding is required, the staff starts the hydraulic rod 4 to push the lifting platform 10 and the upper mold frame mechanism to rise, so that the mold is in an open mold state. Then the staff applies the nano solution to the surfaces of the two molds. After the preparation work is completed, the staff puts the plastic raw material from the feeding hole 12 into the inside of the feeding barrel 5 for melting. The feeding barrel 5 is driven by the feeding motor 13 to transport the molten plastic material downward to prepare for injection into the mold. When the plastic material is ready, the hydraulic rod 4 is started again to drive the lifting platform 10 and the mold frame mechanism to descend, so that the upper mold 35 and the lower mold 25 are tightly closed to complete the mold closing action. At this time, the molten plastic material is injected into the mold cavity under pressure to form a plastic part. During the injection molding process, the vibration component is started under the signal drive of the staff, and the injection molding speed is increased. After the injection molding is completed and cooled, a vibration force is applied to the internal plastic to separate it from the surface of the mold; When the injection molding process begins, the driving motor 29 starts to drive the rotating meshing disk 28 to rotate. Due to the meshing action of the rotating meshing disk 28 and the fixed meshing disk 27, the vibrating plate 26 begins to generate slight vibrations. The buffer spring 22 plays a role of shock absorption and buffering, making the vibration more stable and controllable. The vibration of the vibrating plate 26 is transmitted to the lower mold 25 through the bottom plate seat 7, and then acts on the molten plastic inside the mold. This slight vibration helps to promote the uniform distribution and exhaust of the molten plastic inside the mold, reduce the generation of internal defects and bubbles, and through the action of the limiting component, the upper feeding barrel 5 can follow the mold to shake up and down synchronously when the mold shakes, so that the molten plastic material inside can enter the mold faster, thereby solving the problems that are easy to occur in the low-pressure injection molding commonly used in the production of existing automotive interior plastic parts, such as the plastic melt cooling too fast and the reduced fluidity due to the low mold temperature, which affects the filling effect, making the surface of the plastic part rough, and finally causing the plastic part surface to be scratched, worn or even broken due to the excessive friction between the plastic part and the mold during the demolding process; During use, when the mold is in the mold closing state, the positioning sleeve 33 is inserted into the positioning hole of the lower mold 25, so as to realize the precise positioning of the mold. At this time, the pushing motor 19 above the two connecting side plates 8 is driven by the staff signal, so that the pushing motor 19 drives the limiting card plate 20 to move to the inner side of the bottom plate seat 7, and the pins on both sides of the limiting card plate 20 are inserted into the inside of the bottom plate seat 7 from the side opening 21. As the limiting card plate 20 moves, the slider above the tube bottom ring piece 36 is pushed to one side by the pushing effect of the pins of the limiting card plate 20, and the tube bottom ring piece 36 is locked with the positioning rod on the upper surface of the bottom plate seat 7 through the pins, so that the two molds are locked, so that there will be no gap between the two molds during the process of the vibration component applying vibration, and when the slider slides, it will bring The connecting support rod 34 above is moved to move. When the connecting support rod 34 moves, the movable card 32 above it is driven to withdraw from the interior of the limiting box 11. At this time, the connection effect between the central movable bottom plate 31 and the fixed ring frame 30 is lost. The central movable bottom plate 31 is only fixedly connected to the bottom plate seat 7 through the positioning sleeve 33. When the vibration component below applies a vibration effect to the mold, the central movable bottom plate 31 will shake synchronously with the vibration component, and transmit the vibration effect generated by the vibration component to the feeding barrel 5 above, so that the molten plastic material inside the feeding barrel 5 will enter the interior of the mold more quickly as the feeding barrel 5 shakes up and down, and the liquid material entering the interior will maintain stronger fluidity as it shakes, which is more conducive to quickly filling the interior of the mold; After the injection molding is completed and cooled, the hydraulic rod 4 is started again, pushing the lifting platform 10 and the mold frame mechanism to rise, so that the mold is in an open mold state. At this time, the staff can take the plastic parts out of the mold. Then, the hydraulic rod 4 drives the mold frame mechanism to return to the initial position to prepare for the next injection molding.
[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An injection molding device for producing automobile interior plastic parts that are easy to demould, characterized in that: include: A base (1), wherein a connecting rod (2) is disposed on the upper surface of the base (1), a mold frame mechanism is disposed on the upper surface of the connecting rod (2), the mold frame mechanism comprises a frame assembly and a vibration assembly, the frame assembly comprises: a lifting platform (10), the lifting platform (10) is fixedly mounted on the upper surface of the connecting rod (2), a fixed ring frame (30) is disposed at the center of the lifting platform (10), a central movable top plate (40) is disposed at the center of the fixed ring frame (30), a connecting ring plate (6) is disposed on the upper surface of the central movable top plate (40), a limiting cylinder (17) is disposed at the center of the connecting ring plate (6), and a feeding cylinder (5) is disposed above the limiting cylinder (17); The vibration component comprises: a drive motor (29), the drive motor (29) being arranged on the upper surface of the base (1), a rotating meshing disk (28) being arranged on the output shaft of the drive motor (29), a fixed meshing disk (27) being arranged on the upper surface of the rotating meshing disk (28), a vibration plate body (26) being arranged on the upper surface of the fixed meshing disk (27), four buffer springs (22) being arranged on the upper surface of the vibration plate body (26), and a bottom plate seat (7) being arranged on the upper surface of the buffer spring (22).
2. The injection molding device for producing automobile interior plastic parts that are easy to demould according to claim 1 is characterized in that: The upper surface of the lifting platform (10) is provided with a side frame body (3), the upper surface of the side frame body (3) is provided with a hydraulic rod (4), a side surface of the hydraulic rod (4) is provided with an anchor plate (9), the discharge port of the feeding cylinder (5) is located inside the limiting cylinder (17), the surface of the discharge port of the feeding cylinder (5) is provided with a limiting plate (18), the upper surface of the feeding cylinder (5) is provided with a feeding motor (13), and a side surface of the feeding cylinder (5) is provided with a feeding hole (12).
3. The injection molding device for producing automobile interior plastic parts that are easy to demould according to claim 2 is characterized in that: The surface of the feeding barrel (5) is also sleeved with a barrel annular plate (16), and the upper surface of the lifting platform (10) is also provided with two fixed vertical rods (14) that cooperate with the barrel annular plate (16). Connecting plates are provided on both sides of the barrel annular plate (16), and connecting springs (15) are provided between the connecting plates and the fixed vertical rods (14).
4. The injection molding device for producing automobile interior plastic parts that are easy to demould according to claim 1 is characterized in that: The frame assembly further comprises a limiting assembly, which comprises: a central movable bottom plate (31), the central movable bottom plate (31) being located below a central movable top plate (40), and an upper mould (35) being arranged at the centre of the central movable bottom plate (31).
5. The injection molding device for producing automobile interior plastic parts that are easy to demould according to claim 4 is characterized in that: A spring rod (41) is provided between the central movable top plate (40) and the central movable bottom plate (31), the bottom surface of the central movable top plate (40) and the upper surface of the central movable bottom plate (31) are both provided with mutually matching material conveying sleeves (42), and the bottom surface of the central movable bottom plate (31) is provided with four positioning sleeves (33).
6. The injection molding device for producing automobile interior plastic parts that are easy to demould according to claim 5, characterized in that: The bottom surface of the positioning sleeve (33) is provided with a tube bottom ring piece (36), the upper surface of the tube bottom ring piece (36) is provided with a sliding groove, the interior of the sliding groove is provided with a sliding block, the upper surface of the sliding block is provided with a connecting support rod (34), the top surface of the connecting support rod (34) is provided with an active card (32), one side surface of the active card (32) is provided with a plate edge roller (39), the bottom surface of the fixed ring frame (30) is provided with a limiting box (11) matched with the active card (32), one side surface of the limiting box (11) is provided with a limiting card slot (37), and an inclined plate (38) is provided below the limiting card slot (37).
7. The injection molding device for producing automobile interior plastic parts that are easy to demould according to claim 1 is characterized in that: A limiting bottom rod (24) is arranged at the center of the upper surface of the vibration plate body (26), a limiting sleeve (23) matching with the limiting bottom rod (24) is arranged at the bottom surface of the bottom plate seat (7), a lower mold (25) is arranged at the center of the upper surface of the bottom plate seat (7), and a positioning rod matching with the positioning sleeve (33) is also arranged on the upper surface of the bottom plate seat (7).
8. The injection molding device for producing automobile interior plastic parts that are easy to demould according to claim 7, characterized in that: Both side surfaces of the bottom plate seat (7) are provided with connecting side plates (8), the upper surface of the connecting side plates (8) is provided with a driving motor (19), the end of the output shaft of the driving motor (19) is provided with a limiting clamping plate (20), and the side surface of the bottom plate seat (7) is provided with a side opening (21) that matches the limiting clamping plate (20).