Jacking demolding type injection mold for processing ABS (Acrylonitrile Butadiene Styrene) plastic plate

Abstract

The invention discloses a jacking demolding type injection mold for ABS plastic plate processing, and belongs to the technical field of ABS plastic plate processing, the jacking demolding type injection mold comprises a lower mold, the upper surface of the lower mold is fixedly connected with a guide rod, the surface of the guide rod is slidably provided with an upper mold, and the guide rod is in electric signal connection with the upper mold; a push rod is slidably arranged in the lower mold, and the side face of the push rod is fixedly connected with a stress rod. And an air guide groove is formed in the push rod, and the lower surface of the push rod is fixedly connected with a connecting pipe. When the jacking demolding type injection mold for ABS plastic plate machining works, raw materials are added into a forming cavity of the lower mold through a feeding device and an injection molding head, after forming, the upper mold ascends along a guide rod, at the moment, a stress rod loses the pressure of an ejector rod, and then the stress rod drives a push rod to ascend under the action of a connecting spring; and at the moment, the push rod plays a jacking role, the workpiece is jacked out of the lower die, a worker can take the workpiece conveniently, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ABS plastic sheet processing, and specifically to a top-lifting and demolding injection mold for ABS plastic sheet processing. Background Art

[0002] ABS plastic sheet is a thermoplastic engineering plastic sheet with good comprehensive performance. It is widely used in the fields of construction, automobiles, electronic appliances, and furniture. It has good insulation and mechanical properties, and at the same time has good safety. When processing ABS plastic sheets, injection molding is one of the common processing methods. When injection molding ABS plastic sheets, an injection mold is required. After the workpiece is formed inside the injection mold, the workpiece needs to be taken out. However, the formed workpiece will adhere to the inner wall of the injection mold, which will affect the process of the staff taking out the workpiece. To overcome the above defects, the prior art 1 (a Chinese patent application with the application number 202120176463.9 and the application date of January 22, 2021) is an injection mold that is easy to demold. It is provided with a plurality of impact parts to separate the workpiece from the inner wall of the mold through the impact parts, thereby facilitating the staff to demold the workpiece. There is also the prior art 2 (a Chinese patent application with the application number 202311795493.8 and the application date of December 25, 2023) an injection mold that is easy to demold. It is provided with a demolding mechanism and an installation mechanism. When the second mold and the first mold are closed, the push block automatically moves out of the inner cavity of the injection mold. When the second mold and the first mold are separated, the push block is pushed by the elastic force of the push spring to push the formed material out of the injection mold for automatic demolding operation; at the same time, the cooling water tank can be quickly installed and disassembled, which is convenient for overhauling the cooling water tank. And after injection molding, the mold is automatically demolded. At the same time, during the mold closing process, the cooling water tank is automatically reinforced. The prior art 3 (a Chinese patent application with the application number 202320436235.X and the application date of March 9, 2023) is an injection mold that is convenient for demolding. It designs a wear-resistant component to improve the problem that when the original injection mold is used, the formed product inside the injection mold is repeatedly demolded by the demolding mechanism, resulting in a large friction force at the connection between the demolding mechanism and the injection mold. By setting a wear-resistant mechanism at the connection between the demolding mechanism and the injection mold, the contact area between the demolding mechanism and the injection mold is reduced, thereby reducing the friction between the demolding mechanism and the injection mold and increasing the service life of the injection mold. During the demolding process, a single auxiliary demolding structure still makes insufficient contributions to auxiliary demolding. The molds in the above applications do not have a strong auxiliary demolding structure, resulting in low work efficiency and bringing unnecessary troubles to the staff during the demolding process. Therefore, we propose a top-lifting and demolding injection mold for ABS plastic sheet processing to solve the above-mentioned problems. Summary of the Invention

[0003] The purpose of the present invention is to provide an injection mold with a lifting and demolding mode for processing ABS plastic plates, so as to solve the problems in the above-mentioned background technology, such as having a strong auxiliary demolding structure, low working efficiency, and bringing unnecessary troubles to the demolding process of workers.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: an injection mold with a lifting and demolding mode for processing ABS plastic plates, including a lower mold. A guide rod is fixedly connected to the upper surface of the lower mold, and an upper mold is slidably arranged on the surface of the guide rod. The guide rod and the upper mold are electrically signal-connected. An injection head is fixedly connected to the surface of the upper mold, and the injection head is connected to the output end of an external feeding device through an external hose. A push rod is slidably arranged inside the lower mold, and a force-receiving rod is fixedly connected to the side surface of the push rod. An air guide groove is formed inside the push rod, and a connecting pipe is fixedly connected to the lower surface of the push rod. A connecting shaft is rotatably arranged on the surface of the lower mold, and a movable plate is movably arranged on the surface of the lower mold. A knocking module is fixedly connected to the inner wall of the movable plate.

[0005] Preferably, a top rod is fixedly connected to the lower surface of the upper mold, and the top rods are symmetrically distributed on both sides of the upper mold, and the top rods correspond to the force-receiving rods one by one.

[0006] Preferably, the end of the force-receiving rod is located outside the lower mold. A connecting spring for elastic reset is fixedly connected to the lower surface of the push rod, and the other side of the connecting spring is fixedly connected to the inner wall of the lower mold. The connecting spring is in a compressed state initially.

[0007] Preferably, the outer surface of the push rod fits with the inner wall of the lower mold.

[0008] Preferably, side connection plates are fixedly connected to the surfaces on both sides of the lower mold, an air bag is bonded to the lower surface of the side connection plate, and a lower connecting pipe is fixedly connected to the lower surface of the air bag.

[0009] Preferably, a pressing plate corresponding to the air bag is fixedly connected between adjacent force-receiving rods. A connecting pipe is fixedly connected to the lower surface of the push rod, and the connecting pipe is connected to the lower connecting pipe through an external hose.

[0010] Preferably, an air inlet pipe is fixedly connected to the surface of the air bag, one-way valves are fixedly connected to the surfaces of the air inlet pipe and the lower connecting pipe, and the one-way valves make the air flow direction from the air inlet pipe to the push rod.

[0011] Preferably, a towing rope is fixedly connected to the lower surface of the upper mold, and the other side of the towing rope is wound and fixedly connected to the surface of the connecting shaft. The end of the connecting shaft is fixedly connected to a working plate, and the front view of the working plate is circular. A first magnet is fixedly connected to the surface of the working plate, and the first magnets are equiangularly distributed on the surface of the working plate.

[0012] Preferably, a limiting column is fixedly connected to the outer wall of the lower mold, and a movable plate is sleeved and connected to the surface of the limiting column. The end of the limiting column is fixedly connected to a baffle plate. A second magnet is fixedly connected to the inner wall of the movable plate, and the magnetic pole on the surface of the second magnet is the same as the magnetic pole on the surface of the first magnet. A return spring for elastic reset is fixedly connected to the surface of the movable plate, and the other side of the return spring is fixedly connected to the inner wall of the baffle plate.

[0013] Preferably, a torsion spring for elastic reset is fixedly connected to the surface of the connecting shaft, and the other side of the torsion spring is fixedly connected to the inner wall of the lower mold. The knocking module is a knocking rod fixedly connected to the surface of the movable plate at equal intervals, and the knocking modules are symmetrically distributed on both sides of the movable plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By adopting a new structural design, through the arranged force-receiving rod, connecting spring and push rod, a jacking effect is achieved. After the product is formed, the workpiece can be jacked out of the lower mold. At the same time, the push rod also has a function of blowing air, which can quickly separate the workpiece from the lower mold, making the blanking process more time-saving and labor-saving. In addition, on the outside of the lower mold, a knocking module for assisting vibration blanking is arranged, which can strike the outer surface of the lower mold through the knocking rod, making it easier for the mold to fall off and thus easier to be removed. The specific content is as follows: When the injection mold with a jacking and demolding mode for processing ABS plastic plates works, raw materials are added to the forming cavity of the lower mold through a feeding device and an injection head. After forming, the upper mold rises along the guiding rod. At this time, the force-receiving rod loses the pressure of the ejector rod. Then, under the action of the connecting spring, the force-receiving rod drives the push rod to rise. At this time, the push rod plays a jacking role, jacking the workpiece out of the lower mold, facilitating the operator to take the material and improving work efficiency.

[0015] Furthermore, the push rods are symmetrically distributed on both sides of the lower mold. Therefore, when blanking, the driving force is uniform, and the workpiece can be pushed out better.

[0016] For the injection mold with a lifting and separating mode for processing ABS plastic plates, when the force-bearing rod rises, the force-bearing rod drives the pressing plate to rise synchronously. When the pressing plate rises, it will squeeze the airbag. At this time, the airbag will blow air into the air guide groove through the lower connecting pipe and the connecting pipe, and then the push rod will blow air towards the forming cavity of the lower mold. At this time, the workpiece can be separated from the lower mold more quickly and can also rise more quickly, thereby improving the blanking speed.

[0017] Furthermore, when the upper mold works again, the force-bearing rod will descend again. At this time, the airbag expands, and then the airbag inhales air through the air inlet pipe, facilitating the next use of the airbag. During this process, the one-way valve makes the air flow direction from the air inlet pipe to the push rod, preventing the reverse flow of air and ensuring stability.

[0018] For the injection mold with a lifting and separating mode for processing ABS plastic plates, when the upper mold rises, the upper mold drives the connecting shaft to rotate through the traction rope. When the connecting shaft rotates, it drives the working plate and the first magnet to rotate. Then, under the action of the repulsive magnetic force between the first magnet and the second magnet, the limiting column and the return spring, the movable plate makes a reciprocating linear motion in the horizontal direction, and then the knocking module intermittently knocks on the outer shell of the lower mold, playing a role in vibration-assisted blanking.

[0019] Furthermore, when the connecting shaft rotates, it will stretch the torsion spring. When the upper mold descends again, the connecting shaft will rotate back under the action of the torsion spring, and then the connecting shaft will wind up the traction rope, facilitating the next use and work of the connecting shaft and the traction rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the connection structure between the lower mold and the upper mold of the present invention; Figure 2 It is a schematic diagram of the connection structure between the lower mold and the force-bearing rod of the present invention; Figure 3 It is a schematic diagram of the connection structure between the lower mold and the push rod of the present invention; Figure 4 It is a schematic diagram of the connection structure between the lower mold and the airbag of the present invention; Figure 5 It is a schematic diagram of the sectional state structure of the push rod of the present invention; Figure 6 It is a schematic diagram of the connection structure between the airbag and the lower connecting rod of the present invention; Figure 7 It is a schematic diagram of the distribution state structure of the knocking module of the present invention; Figure 8 It is a schematic diagram of the connection structure between the movable plate and the limiting shaft of the present invention; Figure 9 It is a schematic diagram of the sectional structure of the lower mold of the present invention; Figure 10 For the present inventionFigure 9 Schematic diagram of the enlarged structure at position A in the middle.

[0021] In the figure: 1. Lower mold; 2. Upper mold; 3. Guide rod; 4. Push rod; 5. Stress rod; 6. Connecting spring; 7. Side connecting plate; 8. Airbag; 9. Pressure plate; 10. Lower connecting pipe; 11. Ejector rod; 12. Air inlet pipe; 13. Check valve; 14. Connecting pipe; 15. Air guide groove; 16. Traction rope; 17. Connecting shaft; 18. Working plate; 19. First magnet; 20. Movable plate; 21. Knocking module; 22. Second magnet; 23. Limit post; 24. Baffle; 25. Return spring; 26. Torsion spring. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] The present invention provides the following technical solutions: an injection mold with a jacking and demolding mode for processing ABS plastic plates. Embodiment 1: By setting the push rod 4, after the workpiece is formed, the workpiece can be quickly pushed out of the lower mold 1, so that the lower mold 1 has the function of jacking, as Figures 1 - 3 shown, including a lower mold 1, a guide rod 3 is fixedly connected to the upper surface of the lower mold 1, and an upper mold 2 is slidably arranged on the surface of the guide rod 3, and the guide rod 3 and the upper mold 2 are electrically signal-connected. An injection head is fixedly connected to the surface of the upper mold ②, and the injection head is connected to the output end of an external feeding device through an external hose. A push rod 4 is slidably arranged inside the lower mold 1, and a stress rod 5 is fixedly connected to the side surface of the push rod 4. An ejector rod 11 is fixedly connected to the lower surface of the upper mold 2, and the ejector rods 11 are symmetrically distributed on both sides of the upper mold 2, and the ejector rods 11 correspond to the stress rods 5 one by one. The end of the stress rod 5 is located outside the lower mold 1. A connecting spring 6 for elastic reset is fixedly connected to the lower surface of the push rod 4, and the other side of the connecting spring 6 is fixedly connected to the inner wall of the lower mold 1, and the connecting spring 6 is in a compressed state initially. The outer surface of the push rod 4 is in contact with the inner wall of the lower mold 1.

[0024] During operation, the upper mold 2 fits with the lower mold 1. At this time, the connecting spring 6 is in a compressed state. At this time, through the feeding device and the injection head, raw materials are added to the forming cavity of the lower mold 1. After forming, the upper mold 2 rises along the guide rod 3. At this time, the force-bearing rod 5 loses the pressure of the ejector rod 11. Then, under the action of the connecting spring 6, the force-bearing rod 5 drives the push rod 4 to rise. At this time, the push rod 4 plays a role of lifting, ejecting the workpiece out of the lower mold 1, facilitating the operator to take the material, improving work efficiency. And the push rods 4 are symmetrically distributed on both sides of the lower mold 1. Therefore, during feeding, the driving force is uniform, and the workpiece can be pushed out better.

[0025] Embodiment 2: Different from Embodiment 1, through the provided airbag 8 and air guide groove 15, it plays a role of blowing and separating, optimizing the effect of demoulding and blanking. As Figures 4 - 6 shown, an air guide groove 15 is opened inside the push rod 4, and a connecting pipe 14 is fixedly connected to the lower surface of the push rod 4. Side connecting plates 7 are fixedly connected to the surfaces on the left and right sides of the lower mold 1, and an airbag 8 is adhesively connected to the lower surface of the side connecting plate 7. And a lower connecting pipe 10 is fixedly connected to the lower surface of the airbag 8.

[0026] A pressing plate 9 corresponding to the airbag 8 is fixedly connected between adjacent force-bearing rods 5. A connecting pipe 14 is fixedly connected to the lower surface of the push rod 4, and the connecting pipe 14 is connected to the lower connecting pipe 10 through an external hose. An air inlet pipe 12 is fixedly connected to the surface of the airbag 8, and check valves 13 are fixedly connected to the surfaces of the air inlet pipe 12 and the lower connecting pipe 10. And the check valves 13 make the air flow direction from the air inlet pipe 12 to the push rod 4.

[0027] During the demoulding process, when the force-bearing rod 5 rises, the force-bearing rod 5 drives the pressing plate 9 to rise synchronously. When the pressing plate 9 rises, it will squeeze the airbag 8 on the lower surface of the side connecting plate 7. At this time, the airbag 8 will blow air into the air guide groove 15 through the lower connecting pipe 10, the connecting pipe 14 and the external hose. Then, the push rod 4 will blow air to the forming cavity position of the lower mold 1. At this time, the workpiece can be separated from the lower mold 1 more quickly and can also rise more quickly, thereby improving the blanking speed. When the upper mold 2 works again, the force-bearing rod 5 will be pushed down by the ejector rod 11 again. At this time, the airbag 8 loses the squeezing force of the pressing plate 9. Then, the airbag 8 expands. At this time, the airbag 8 inhales air through the air inlet pipe 12, facilitating the next use of the airbag 8. And in this process, the check valves 13 make the air flow direction from the air inlet pipe 12 to the push rod 4, and the situation of air flow countercurrent will not occur, ensuring stability.

[0028] Embodiment 3: Different from Embodiment 2, through the provided movable plate 20 and knocking module 21, the outer wall of the lower mold 1 can be knocked, playing a role of auxiliary blanking on the outside. As Figures 7 - 10 shown, A connecting shaft 17 is rotatably arranged on the surface of the lower die 1, and a movable plate 20 is movably arranged on the surface of the lower die 1. A knocking module 21 is fixedly connected to the inner wall of the movable plate 20. A towing rope 16 is fixedly connected to the lower surface of the upper die 2, and the other side of the towing rope 16 is wound and fixedly connected to the surface of the connecting shaft 17. The end of the connecting shaft 17 is fixedly connected to a working plate 18. The front view of the working plate 18 is circular. A first magnet 19 is fixedly connected to the surface of the working plate 18, and the first magnets 19 are equiangularly distributed on the surface of the working plate 18.

[0029] A limiting column 23 is fixedly connected to the outer wall of the lower die 1, and the movable plate 20 is sleeved on the surface of the limiting column 23. The end of the limiting column 23 is fixedly connected to a baffle 24. A second magnet 22 is fixedly connected to the inner wall of the movable plate 20. The magnetic poles on the surface of the second magnet 22 are the same as those on the surface of the first magnet 19. A reset spring 25 for elastic reset is fixedly connected to the surface of the movable plate 20, and the other side of the reset spring 25 is fixedly connected to the inner wall of the baffle 24. A torsion spring 26 for elastic reset is fixedly connected to the surface of the connecting shaft 17, and the other side of the torsion spring 26 is fixedly connected to the inner wall of the lower die 1. The knocking module 21 is knocking rods fixedly connected to the surface of the movable plate 20 at equal intervals, and the knocking modules 21 are symmetrically distributed on both sides of the movable plate 20.

[0030] When the upper die 2 rises, the upper die 2 drives the connecting shaft 17 to rotate through the towing rope 16. When the connecting shaft 17 rotates, it will drive the working plate 18 and the first magnet 19 to rotate. When the first magnet 19 rotates close to the second magnet 22, the movable plate 20 moves away from the lower die 1 under the action of the repulsive magnetic force. At this time, the reset spring 25 is compressed. When the first magnet 19 continues to rotate away from the second magnet 22, the movable plate 20 returns to its original position under the action of the reset spring 25 (the limiting column 23 enables the movable plate 20 to move only in the horizontal direction). Thus, the movable plate 20 makes a reciprocating linear motion in the horizontal direction, and then the knocking module 21 intermittently strikes the outer shell of the lower die 1, playing a role in vibrating and assisting in discharging materials. When the connecting shaft 17 rotates, it will stretch the torsion spring 26. When the upper die 2 descends again, the connecting shaft 17 will rotate back under the action of the torsion spring 26. Thus, the connecting shaft 17 will wind up the towing rope 16, facilitating the next use and operation of the connecting shaft 17 and the towing rope 16.

[0031] The above is the working process of the entire device, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An injection mold with a lifting and demolding mode for processing ABS plastic plates, including a lower mold (1). A guide rod (3) is fixedly connected to the upper surface of the lower mold (1), and an upper mold (2) is slidably arranged on the surface of the guide rod (3). The guide rod (3) and the upper mold (2) are electrically signal-connected. An injection head is fixedly connected to the surface of the upper mold (2), and the injection head is connected to the output end of an external feeding device through an external hose. It is characterized in that: A push rod (4) is slidably arranged inside the lower mold (1), and a stress rod (5) is fixedly connected to the side surface of the push rod (4). An air guide groove (15) is opened inside the push rod (4), and a connecting pipe (14) is fixedly connected to the lower surface of the push rod (4). A connecting shaft (17) is rotatably arranged on the surface of the lower mold (1), and a movable plate (20) is movably arranged on the surface of the lower mold (1). A knocking module (21) is fixedly connected to the inner wall of the movable plate (20).

2. The injection mold with a jacking and demolding mode for processing ABS plastic plates according to claim 1, characterized in that: A ejector rod (11) is fixedly connected to the lower surface of the upper mold (2), and the ejector rods (11) are symmetrically distributed on both sides of the upper mold (2), and the ejector rods (11) correspond to the stress rods (5) one by one.

3. The injection mold with a jacking and demolding mode for processing ABS plastic plates according to claim 2, wherein: The end of the stress rod (5) is located outside the lower mold (1). A connecting spring (6) that plays an elastic reset role is fixedly connected to the lower surface of the push rod (4), and the other side of the connecting spring (6) is fixedly connected to the inner wall of the lower mold (1), and the connecting spring (6) is in a compressed state initially.

4. The injection mold with a jacking and demolding mode for processing ABS plastic plates according to claim 1, characterized in that: The outer surface of the push rod (4) fits with the inner wall of the lower mold (1).

5. The injection mold with a jacking and demolding mode for processing ABS plastic plates according to claim 1, characterized in that: Side connecting plates (7) are fixedly connected to the surfaces on both the left and right sides of the lower mold (1), an airbag (8) is adhesively bonded to the lower surface of the side connecting plate (7), and a lower connecting pipe (10) is fixedly connected to the lower surface of the airbag (8).

6. The injection mold for processing ABS plastic plates with a lifting and demolding mode according to claim 5, characterized in that: A pressing plate (9) corresponding to the airbag (8) is fixedly connected between adjacent stress rods (5). A connecting pipe (14) is fixedly connected to the lower surface of the push rod (4), and the connecting pipe (14) is connected to the lower connecting pipe (10) through an external hose.

7. An injection mold with a jacking and demolding mode for processing ABS plastic plates according to claim 5, characterized in that: An air inlet pipe (12) is fixedly connected to the surface of the airbag (8), and check valves (13) are fixedly connected to the surfaces of both the air inlet pipe (12) and the lower connecting pipe (10), and the check valves (13) make the air flow direction from the air inlet pipe (12) to the push rod (4).

8. An injection mold with a lifting and demolding mode for processing ABS plastic plates according to claim 1, characterized in that: A towing rope (16) is fixedly connected to the lower surface of the upper mold (2), and the other side of the towing rope (16) is wound and fixedly connected to the surface of the connecting shaft (17). A working plate (18) is fixedly connected to the end of the connecting shaft (17), and the front view of the working plate (18) is circular. A first magnet (19) is fixedly connected to the surface of the working plate (18), and the first magnets (19) are equiangularly distributed on the surface of the working plate (18).

9. The injection mold with a lifting and demolding mode for processing ABS plastic plates according to claim 8, wherein: A limiting post (23) is fixedly connected to the outer wall of the lower die (1), and the movable plate (20) is sleeved and connected to the surface of the limiting post (23), and a baffle (24) is fixedly connected to the end of the limiting post (23). A second magnet (22) is fixedly connected to the inner wall of the movable plate (20), and the magnetic pole on the surface of the second magnet (22) is the same as the magnetic pole on the surface of the first magnet (19). A return spring (25) for elastic reset is fixedly connected to the surface of the movable plate (20), and the other side of the return spring (25) is fixedly connected to the inner wall of the baffle (24).

10. The injection mold with a jacking and demolding mode for processing ABS plastic plates according to claim 1, characterized in that: A torsion spring (26) for elastic reset is fixedly connected to the surface of the connecting shaft (17), and the other side of the torsion spring (26) is fixedly connected to the inner wall of the lower die (1). The knocking module (21) is a knocking rod fixedly connected to the surface of the movable plate (20) at equal intervals, and the knocking modules (21) are symmetrically distributed on both sides of the movable plate (20).

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