Forming mold capable of rapidly demolding for plastic product

Abstract

The utility model relates to the technical field of thermoplastic plastic production equipment, and discloses a forming mold capable of quickly demolding for plastic products, which comprises a bottom plate, one side of the bottom plate is in threaded connection with a transverse frame, four groups of positioning guide sleeves are fixedly connected in the transverse frame, positioning guide columns are slidably connected in the positioning guide sleeves, and the positioning guide columns are in threaded connection with the transverse frame. And the surface of the transverse frame is fixedly connected with a mold groove. According to the forming mold capable of rapidly demolding for the plastic product, through the arrangement of the ejection assembly, after the plastic product is cooled and solidified, the air cylinder works, the air cylinder provides power to drive the ejection core to move forwards in the sleeve, and the tip end of the ejection core makes contact with the plastic product and ejects the plastic product out of the mold cavity; the plastic product can be rapidly and stably ejected out of the mold, the demolding speed is remarkably increased, abrasion and damage of the mold are reduced, the service life of the mold is prolonged, it is ensured that the plastic product is not damaged in the demolding process, and therefore the integrity and quality of the product are kept.

Description

Technical Field

[0001] This utility model relates to the technical field of thermoplastic production equipment, and in particular to a molding die for plastic products that allows for rapid demolding. Background Technology

[0002] Plastic products are widely used in various fields due to their lightweight, high strength, corrosion resistance, good insulation properties, and ease of processing. In the plastic processing process, molding dies are indispensable tools. They determine the shape, size, and precision of plastic products. Different molding dies can produce plastic products of various shapes and precise dimensions. At the same time, molding dies also determine the surface quality, physical properties, and mechanical properties of plastic products. Therefore, the design, manufacture, and use of molding dies are crucial to the quality and performance of plastic products.

[0003] In actual use, plastic products often have difficulty being easily removed from the mold after cooling and solidifying inside. The adhesion between the mold and the product is relatively strong, and manual prying may cause the product to deform or crack, which is not conducive to improving production efficiency and ensuring product quality.

[0004] A search of existing patents revealed a molding die for large thermoplastic products that facilitates demolding (Publication No.: CN215242614U). This die includes a housing with two sets of supports fixedly connected to its inner wall. The other ends of the supports are fixedly connected to a stationary mold. Two sets of first sliding rods are laterally arranged within the housing. Mold sealing plates are slidably mounted on the surfaces of the two sets of first sliding rods. This invention relates to the field of thermoplastic production technology. This molding die for large thermoplastic products allows for easy demolding. After molding, reversing the screw can move the moving mold and mold sealing plates in opposite directions, thereby releasing the stationary mold from its closed state. This allows the moving mold to detach from the mold sealing plate, completing demolding. Demolding efficiency is higher, preventing damage to the molded plastic. The operation is simple and convenient.

[0005] Although the aforementioned patent achieves demolding by separating the moving mold from the mold closing plate, thus improving demolding efficiency, the mold cannot quickly reduce its temperature after injection molding, which may lead to defects such as weld lines and scorching on the surface of the product, as well as prolonging the demolding time.

[0006] Therefore, it is necessary to invent a molding die for plastic products that can be quickly demolded to solve the above problems. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] The technical problem solved by this utility model is to provide a molding die for plastic products that is highly practical, simple to operate, and has a relatively simple structure, enabling rapid demolding. This solves the problems mentioned in the background art regarding the difficulty in successfully demolding plastic products and ensuring product quality.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model provides the following technical solution: a molding die for plastic products that allows for rapid demolding, comprising a base plate, a crossbeam threaded to one side of the base plate, four sets of positioning guide sleeves fixedly connected inside the crossbeam, positioning guide pins slidably connected inside the positioning guide sleeves, a mold groove fixedly connected to the surface of the crossbeam, an injection hole formed on the surface of the mold groove, a cooling assembly fixedly connected to one side of the mold groove, a rear crossbeam threadedly connected to one side of the positioning guide pins, two sets of fixing plates fixedly connected to one side of the rear crossbeam, a movable plate drivenly connected to one side of the fixing plates, an ejector pin assembly fixedly connected to the surface of the movable plate, a top plate threadedly connected to the bottom of the fixing plates, and an injection molding assembly fixedly connected to the other side of the base plate.

[0011] As a further embodiment of this utility model, the cooling assembly includes a water-cooling pipe fixedly connected to one side of the mold groove. A circulation tank is fixedly connected to the water-cooling pipe through a pipe. A circulation pump is fixedly connected to one side of the circulation tank. The circulation pump facilitates the circulation of coolant between the water-cooling pipe and the circulation tank to achieve effective heat dissipation of the mold.

[0012] As a further embodiment of this invention, a water inlet is fixedly connected to one side of the water-cooling pipe, and a water outlet is fixedly connected to the bottom of the water inlet. A regulating valve is fixedly connected to one side of the circulation tank. The regulating valve facilitates control of the flow rate and velocity of the coolant, so as to adjust the heat dissipation effect of the cooling system as needed. As a further embodiment of this invention, a water-cooling rod is fixedly connected inside the circulation tank, and an external power supply is fixedly connected to one side of the water-cooling rod. The water-cooling rod helps to ensure that the coolant in the circulation tank maintains a stable temperature, thereby enhancing the efficiency of the cooling system.

[0013] As a further embodiment of this utility model, the ejector pin assembly includes a sleeve fixedly connected to the surface of the movable plate, an ejector core is internally connected to the sleeve, and a cylinder is fixedly connected to one side of the ejector core. The cylinder facilitates driving the ejector core to move within the sleeve, thereby realizing the ejection of the product from the mold.

[0014] As a further embodiment of this utility model, the injection molding assembly includes an injection cylinder fixedly connected to the other side of the base plate. A screw is rotatably connected inside the injection cylinder, and a drive motor is rotatably connected to one side of the screw. The drive motor provides rotational power to drive the screw to rotate inside the injection cylinder, thereby realizing the conveying, melting, and injection molding process of plastic raw materials.

[0015] As a further embodiment of this utility model, a number of heating blocks are fixedly connected to the surface of the injection molding cylinder, and a hopper is fixedly connected to one side of the heating blocks. The hopper facilitates the storage and supply of plastic raw materials into the injection molding cylinder, ensuring a continuous supply of raw materials during the injection molding process.

[0016] (III) Beneficial Effects

[0017] This utility model provides a molding die for plastic products that allows for rapid demolding, and has the following beneficial effects:

[0018] 1. This plastic product uses a molding die that allows for rapid demolding. With the ejection assembly, after the plastic product cools and solidifies, the cylinder operates, providing power to drive the ejector core forward within the sleeve. The tip of the ejector core contacts the plastic product and ejects it from the mold cavity. This allows for rapid and smooth ejection of the plastic product from the mold, significantly improving demolding speed, reducing mold wear and damage, extending mold life, and ensuring that the plastic product is not damaged during demolding, thus maintaining product integrity and quality.

[0019] 2. This plastic product uses a molding die that allows for quick demolding. Through the cooling components, coolant flows in the water-cooling pipes, absorbing heat from the mold. It then enters the circulation tank through pipes, where it undergoes cooling treatment before being pumped back into the water-cooling pipes. The regulating valve controls the flow rate and velocity of the coolant to adapt to the cooling needs of different molds and plastic products, ensuring optimal cooling. The coolant can continuously circulate within the mold, achieving efficient cooling, reducing thermal stress during injection molding, and extending the mold's service life.

[0020] 3. This plastic product uses a molding die that allows for quick demolding. Through the setting of the injection molding assembly, the plastic raw material is poured into the hopper at the top of the injection barrel. The outer wall of the injection barrel is equipped with heating blocks, which are powered by an external power source to heat the injection barrel, drive the motor to start, and provide rotational power to the screw. The screw rotates inside the injection barrel, and its spiral structure conveys the molten plastic raw material forward and injects it into the mold cavity. The precise injection molding process helps to reduce product defects and scrap rates. The automated injection molding process reduces the need for manual operation and improves production efficiency. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the novel structure of the base plate, positioning guide sleeve, and rear crossbar of this utility model;

[0023] Figure 3 This is a schematic diagram of the cooling component structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the ejector pin assembly structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the injection molding component structure of this utility model.

[0026] In the diagram: 1. Base plate; 2. Positioning guide sleeve; 3. Positioning guide post; 4. Mold groove; 5. Cooling assembly; 501. Water cooling pipe; 502. Circulation tank; 503. Circulation pump; 6. Rear crossbar; 7. Fixed plate; 8. Movable plate; 9. Ejector pin assembly; 901. Sleeve; 902. Ejector core; 903. Cylinder; 10. Top plate; 11. Injection assembly; 1101. Injection barrel; 1102. Screw; 1103. Drive motor; 12. Water inlet; 13. Water outlet; 14. Regulating valve; 15. Water cooling rod; 16. Heating block; 17. Hopper. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figures 1 to 5 This utility model provides a technical solution: a molding die for plastic products that can be quickly demolded, including a base plate 1, a crossbeam threaded to one side of the base plate 1, four sets of positioning guide sleeves 2 fixedly connected inside the crossbeam, positioning guide pins 3 slidably connected inside the positioning guide sleeves 2, a mold groove 4 fixedly connected to the surface of the crossbeam, an injection hole opened on the surface of the mold groove 4, a cooling component 5 fixedly connected to one side of the mold groove 4, a rear crossbeam 6 threadedly connected to one side of the positioning guide pins 3, two sets of fixing plates 7 fixedly connected to one side of the rear crossbeam 6, a movable plate 8 drivenly connected to one side of the fixing plate 7, an ejector pin assembly 9 fixedly connected to the surface of the movable plate 8, a top plate 10 threadedly connected to the bottom of the fixing plate 7, and an injection molding component 11 fixedly connected to the other side of the base plate 1.

[0029] Please see Figure 3The cooling component 5 includes a water cooling pipe 501 fixedly connected to one side of the mold cavity 4. The water cooling pipe 501 is fixedly connected to a circulation tank 502 through a pipe. A circulation pump 503 is fixedly connected to one side of the circulation tank 502. The circulation pump 503 drives the coolant to circulate between the water cooling pipe 501 and the circulation tank 502 to achieve effective heat dissipation of the mold.

[0030] Please see Figure 3 A water inlet 12 is fixedly connected to one side of the water cooling pipe 501, and a water outlet 13 is fixedly connected to the bottom of the water inlet 12. A regulating valve 14 is fixedly connected to one side of the circulation tank 502. The regulating valve 14 controls the flow rate and velocity of the coolant, so as to adjust the heat dissipation effect of the cooling system as needed.

[0031] Please see Figure 3 A water-cooling rod 15 is fixedly connected inside the circulation box 502. An external power supply is fixedly connected to one side of the water-cooling rod 15. The water-cooling rod 15 helps to keep the temperature of the coolant in the circulation box 502 stable, thereby enhancing the efficiency of the cooling system.

[0032] Please see Figure 4 The ejector pin assembly 9 includes a sleeve 901 fixedly connected to the surface of the movable plate 8. An ejector core 902 is internally connected to the sleeve 901. A cylinder 903 is fixedly connected to one side of the ejector core 902. The cylinder 903 drives the ejector core 902 to move within the sleeve 901, thereby ejecting the product from the mold.

[0033] Please see Figure 5 The injection molding assembly 11 includes an injection cylinder 1101 fixedly connected to the other side of the base plate 1. A screw 1102 is rotatably connected inside the injection cylinder 1101. A drive motor 1103 is rotatably connected to one side of the screw 1102. The drive motor 1103 provides rotational power to drive the screw 1102 to rotate inside the injection cylinder 1101, thereby realizing the conveying, melting and injection molding of plastic raw materials.

[0034] Please see Figure 5 Several sets of heating blocks 16 are fixedly connected to the surface of the injection cylinder 1101. A hopper 17 is fixedly connected to one side of the heating block 16. The hopper 17 is used to store and supply plastic raw materials into the injection cylinder 1101, ensuring a continuous supply of raw materials during the injection molding process.

[0035] In this invention, the working steps of the device are as follows:

[0036] First step: Pour the plastic raw material into the hopper 17 at the top of the injection molding barrel 1101. The heating block 16 heats the injection molding barrel 1101. The drive motor 1103 starts and provides rotational power to the screw 1102. The screw 1102 rotates inside the injection molding barrel 1101, and its spiral structure conveys the molten plastic raw material forward.

[0037] The second step: the positioning guide post 3 moves within the positioning guide sleeve 2, the cavity is sealed, and the molten plastic material is injected into the mold cavity;

[0038] The third step: The coolant flows in the water cooling pipe 501 and absorbs the heat of the mold. It enters the circulation tank 502 through the pipe. In the circulation tank 502, the coolant is cooled and then sent back to the water cooling pipe 501 by the circulation pump 503.

[0039] Fourth step: After the plastic product cools and solidifies, cylinder 903 provides power to drive ejector core 902 to move forward in sleeve 901. The tip of ejector core 902 contacts the plastic product and ejects it from the mold cavity.

[0040] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0041] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molding die for quick demolding of plastic products, comprising a base plate (1), characterized in that: A crossbeam is threaded to one side of the base plate (1). Four sets of positioning guide sleeves (2) are fixedly connected inside the crossbeam. Positioning guide pins (3) are slidably connected inside the positioning guide sleeves (2). A mold groove (4) is fixedly connected to the surface of the crossbeam. An injection hole is opened on the surface of the mold groove (4). A cooling assembly (5) is fixedly connected to one side of the mold groove (4). A rear crossbeam (6) is threaded to one side of the positioning guide pins (3). Two sets of fixing plates (7) are fixedly connected to one side of the rear crossbeam (6). A movable plate (8) is driven to one side of the fixing plate (7). An ejector pin assembly (9) is fixedly connected to the surface of the movable plate (8). A top plate (10) is threaded to the bottom of the fixing plate (7). An injection molding assembly (11) is fixedly connected to the other side of the base plate (1).

2. A molding die for quick demolding of plastic products according to claim 1, characterized in that: The cooling assembly (5) includes a water cooling pipe (501) fixedly connected to one side of the mold groove (4), and a circulation tank (502) is fixedly connected to the water cooling pipe (501) through a pipe. A circulation pump (503) is fixedly connected to one side of the circulation tank (502).

3. A molding die for quick demolding of plastic products according to claim 2, characterized in that: A water inlet (12) is fixedly connected to one side of the water cooling pipe (501), and a water outlet (13) is fixedly connected to the bottom of the water inlet (12). A regulating valve (14) is fixedly connected to one side of the circulation tank (502).

4. A molding die for quick demolding of plastic products according to claim 2, characterized in that: A water-cooling rod (15) is fixedly connected inside the circulation box (502), and an external power supply is fixedly connected to one side of the water-cooling rod (15).

5. A molding die for quick demolding of plastic products according to claim 1, characterized in that: The ejector assembly (9) includes a sleeve (901) fixedly connected to the surface of the movable plate (8), and an ejector core (902) is internally connected to the sleeve (901). A cylinder (903) is fixedly connected to one side of the ejector core (902).

6. A molding die for quick demolding of plastic products according to claim 1, characterized in that: The injection molding assembly (11) includes an injection cylinder (1101) fixedly connected to the other side of the base plate (1). A screw (1102) is rotatably connected inside the injection cylinder (1101), and a drive motor (1103) is rotatably connected to one side of the screw (1102).

7. A molding die for quick demolding of plastic products according to claim 6, characterized in that: Several sets of heating blocks (16) are fixedly connected to the surface of the injection cylinder (1101), and a hopper (17) is fixedly connected to one side of the heating block (16).

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