Sliding block core-pulling mechanism in rear mold and mold

Abstract

The utility model relates to the technical field of molds, in particular to a rear mold inner sliding block core-pulling mechanism and a mold, which comprise a base, a rear mold plate is fixedly mounted at the top of the base, a front mold plate is slidably connected to the top of the rear mold plate, a top plate is fixedly mounted at the top of the front mold plate, and a cooling water tank is fixedly mounted on the left side of the rear mold plate. A cooling water tank is fixedly mounted in the rear mold plate, a cooling coil matched with the cooling water tank for use is fixedly mounted in the rear mold plate, the mold opening and core pulling mechanism is fixedly mounted at the left end and the right end in the rear mold plate, and the mold opening and core pulling mechanism is used for automatically pulling a core during mold opening. Through the design, the size of the mold can be reduced, the core pulling operation is completed while the mold opening operation is performed, the structure is simple, the production cost is reduced, meanwhile, an injection molding product is rapidly cooled before core pulling, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a core-pulling mechanism of a slider in a rear mold and a mold. Background Art

[0002] The mold usually includes a front mold and a back mold. The front mold and the back mold are combined for injection molding. After the injection molding is completed and molding, the front mold and the back mold are opened, and the injection molded product is taken out by core pulling operation.

[0003] Existing mold core pulling operations often use rear mold core pulling, which needs to be driven by a cylinder. The use of the cylinder increases the purchase and maintenance costs of the cylinder itself, and it is also necessary to design an oil circuit that matches the cylinder, which makes the mold oil circuit installation and maintenance cumbersome and requires more human resources, affecting the mold production progress. In addition, the use of the cylinder will inevitably increase the size of the mold, and it is necessary to match a large-sized injection molding machine, resulting in low resource utilization and increased production costs.

[0004] Therefore, it is particularly important to design a rear mold inner slider core pulling mechanism and a mold to solve the above-mentioned defects. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model designs a rear mold inner slider core pulling mechanism and a mold, which aims to solve the technical problems in the prior art that the rear mold core pulling must be driven by a cylinder, resulting in a large mold size, complex cylinder oil circuits and high costs.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A rear mold inner slider core pulling mechanism, comprising a base, a rear mold plate fixedly mounted on the top of the base, a front mold plate slidably connected to the top of the rear mold plate, a top plate fixedly mounted on the top of the front mold plate, a cooling water tank fixedly mounted on the left side of the rear mold plate, a cooling coil matched with the cooling water tank fixedly mounted inside the rear mold plate, and further comprising:

[0008] The mold opening core pulling mechanism is fixedly installed at the left and right ends inside the rear template, and is used for automatically pulling the core when the mold is opened.

[0009] As a preferred solution of the utility model, sliding rods are fixedly connected to the four corners of the front template, four groups of sliding rods are slidably connected to the rear template, and the top plate is fixedly connected to the front template by multiple groups of mounting bolts.

[0010] As a preferred solution of the utility model, an injection tube is fixedly installed at the right end inside the top plate, the bottom end of the injection tube extends to the top of the rear template, and a guide groove is opened inside the rear template and at the bottom of the injection tube.

[0011] As a preferred solution of the utility model, a water pump is fixedly installed on the front of the cooling water tank, the input end of the water pump is connected to the cooling water tank through a water pumping pipe, the output end of the water pump is fixedly connected to one end of the cooling coil through a water supply pipe, and the other end of the cooling coil is connected to the cooling water tank.

[0012] As a preferred solution of the utility model, a heat insulation plate is fixedly installed between the cooling water tank and the rear template, a water filling cover is threadedly connected to the top of the cooling water tank, a heat dissipation groove is opened on the left side of the cooling water tank, and multiple groups of heat dissipation fins are fixedly connected to the inner side of the heat dissipation groove.

[0013] As a preferred solution of the utility model, the mold opening and core pulling mechanism includes a slide seat slidably connected to the front and rear ends of the rear template, the opposite sides of the two groups of slide seats are fixedly connected with the core pulling plates, the sides of the two groups of slide seats away from each other are threadedly connected with rotating rods, the ends of the two groups of rotating rods away from each other are fixedly connected with transmission gears, and the front side of the front template is meshed with the transmission gear through a driving gear rod.

[0014] As a preferred solution of the utility model, a top block is fixedly installed inside the front template and on the top of the slide seat, the ends of the two groups of rotating rods that are away from each other are rotatably connected to the rear template through a bearing seat, and the top end of the driving gear rod is fixedly connected to the front template through a connecting column.

[0015] The utility model also provides a mold, comprising any one of the above-mentioned rear mold inner slider core pulling mechanisms, and further comprising:

[0016] The lower mold and the upper mold are respectively fixedly installed inside the rear mold plate and the front mold plate.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. In the utility model, through the coordinated design of the rear template, the front template and the mold opening and core pulling mechanism, after the injection molded product is molded and cooled, the front template is opened upward to open the mold, and when the front template is opened, the driving gear rod is driven to move upward, and the rotating rod is driven to rotate under the meshing of the transmission gear, so that the end of the rotating rod with a thread on the outside is rotated inwardly toward the inside of the slide seat, thereby pulling the slide seat to move toward the outside of the rear template, and when the slide seat is pulled, the core pulling operation is performed through the core pulling plate to take out the injection molded product, and at the same time, the slide seat will push up the top block when it moves, so that the front template and the rear template are quickly opened, which not only reduces the volume of the mold, but also completes the core pulling operation while the mold opening operation, and the simple structure reduces the production cost.

[0019] 2. In the utility model, through the coordinated design of the rear template, the cooling water tank and the cooling coil, after injection molding, the water pump is started to extract the cooling water in the cooling water tank through the pumping pipe, and enters the cooling coil under the transmission of the water delivery pipe, and the cooling water in the cooling coil will finally flow back into the cooling water tank, so that when the injection molded product is taken out, the rear template is quickly cooled and cooled, and then the injection molded product is cooled and taken out conveniently, which greatly improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the top structure of the front template of the utility model;

[0022] Figure 3 This is a schematic diagram of the upper mold structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the lower mold structure of the utility model;

[0024] Figure 5 This is a partial structural diagram of the mold opening and core pulling mechanism of the utility model;

[0025] Figure 6 This is a schematic diagram of the cooling coil structure of the utility model.

[0026] In the figure: 1. base; 2. rear template; 3. front template; 301. slide rod; 4. top plate; 401. injection tube; 402. guide groove; 5. cooling water tank; 501. water pump; 502. water extraction pipe; 503. water supply pipe; 504. heat insulation board; 505. water filling cover; 506. heat dissipation fin; 6. cooling coil; 7. mold opening and core pulling mechanism; 701. slide seat; 702. core pulling plate; 703. rotating rod; 704. transmission gear; 705. driving gear rod; 706. top block; 707. bearing seat; 708. connecting column; 8. lower mold; 9. upper mold. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example

[0028] See also Figure 1-Figure 6 , the utility model provides a technical solution:

[0029] A rear mold inner slider core pulling mechanism comprises a base 1, a rear mold plate 2 is fixedly installed on the top of the base 1, a front mold plate 3 is slidably connected to the top of the rear mold plate 2, a top plate 4 is fixedly installed on the top of the front mold plate 3, a cooling water tank 5 is fixedly installed on the left side of the rear mold plate 2, a cooling coil 6 adapted to the cooling water tank 5 is fixedly installed inside the rear mold plate 2, and further comprises:

[0030] The mold opening core pulling mechanism 7 is fixedly installed at the left and right ends inside the rear mold plate 2, and the mold opening core pulling mechanism 7 is used for automatically pulling the core when the mold is opened.

[0031] First, the four corners of the front template 3 are fixedly connected with sliding rods 301, and the four groups of sliding rods 301 are all slidably connected to the rear template 2. The top plate 4 is fixedly connected to the front template 3 through multiple groups of mounting bolts. When closing and opening the mold, the front template 3 slides upward through the sliding rods 301, and the sliding rods 301 and the rear template 2 slide in cooperation, thereby ensuring the stability of closing and opening the mold.

[0032] Furthermore, an injection molding tube 401 is fixedly installed at the right end inside the top plate 4, and the bottom end of the injection molding tube 401 extends to the top of the rear template 2. A guide groove 402 is opened inside the rear template 2 and at the bottom of the injection molding tube 401. The injection molding raw material is poured into the inner side of the rear template 2 and the front template 3 through the injection molding tube 401, and the injection molding raw material is introduced into the guide groove 402 after entering.

[0033] Then, a water pump 501 is fixedly installed on the front of the cooling water tank 5, and the input end of the water pump 501 is connected to the cooling water tank 5 through a pumping pipe 502, and the output end of the water pump 501 is fixedly connected to one end of the cooling coil 6 through a water supply pipe 503, and the other end of the cooling coil 6 is connected to the cooling water tank 5. After injection molding, the water pump 501 is started to extract the cooling water in the cooling water tank 5 through the pumping pipe 502, and enter the cooling coil 6 under the transmission of the water supply pipe 503, and the cooling water in the cooling coil 6 will finally flow back into the cooling water tank 5, so that when the injection molded product is taken out, the rear template 2 is quickly cooled down, and then the injection molded product is cooled for easy removal.

[0034] Furthermore, a heat insulation plate 504 is fixedly installed between the cooling water tank 5 and the rear template 2, a water filling cover 505 is threadedly connected to the top of the cooling water tank 5, a heat dissipation groove is opened on the left side of the cooling water tank 5, and a plurality of heat dissipation fins 506 are fixedly connected to the inner side of the heat dissipation groove. The heat insulation plate 504 is used to prevent the temperature of the rear template 2 from affecting the cooling water tank 5 during injection molding. The water filling cover 505 is opened to add water to the inside of the cooling water tank 5. At the same time, a plurality of heat dissipation fins 506 are fixedly connected to the heat dissipation groove on the outside of the cooling water tank 5. The heat dissipation fins 506 extend to the inside of the cooling water tank 5 and contact with the cooling water. The cooling water can be continuously cooled by the heat dissipation fins 506, so that the cooling water can be recycled.

[0035] The core pulling mechanism 7 comprises a slide 701 slidably connected to the front and rear ends of the rear template 2, the core pulling plates 702 are fixedly connected to the opposite sides of the two groups of slides 701, the rotating rods 703 are threadedly connected to the sides away from the two groups of slides 701, and the ends away from the two groups of rotating rods 703 are fixedly connected to the transmission gear 704, and the front side of the front template 3 is meshed with the transmission gear 704 through the driving gear rod 705. After the injection molded product is molded and cooled, the front template 3 is opened upward to open the mold. When the front template 3 is opened, the driving gear rod 705 will be driven to move upward, and the rotating rod 703 will be driven to rotate under the meshing of the transmission gear 704, so that the end of the rotating rod 703 with a thread on the outside is rotated inwardly toward the inside of the slide 701, thereby pulling the slide 701 to move toward the outside of the rear template 2.

[0036] Secondly, a top block 706 is fixedly installed inside the front template 3 and on the top of the slide 701. The ends of the two sets of rotating rods 703 that are away from each other are rotatably connected to the rear template 2 through the bearing seat 707. The top of the driving gear rod 705 is fixedly connected to the front template 3 through the connecting column 708. The rotating rod 703 rotates stably through the bearing seat 707. When the slide 701 is pulled, the core pulling operation is performed through the core pulling plate 702 to remove the injection molded product. At the same time, when the slide 701 moves, the top block 706 will be pushed up, thereby facilitating the rapid opening of the front template 3 and the rear template 2.

[0037] Finally, the utility model also provides a mold, which also includes:

[0038] The lower mold 8 and the upper mold 9 are fixedly installed inside the rear mold plate 2 and the front mold plate 3 respectively. The inner sides of the lower mold 8 and the upper mold 9 are provided with injection mold cavities. The injection raw materials are introduced into the injection mold cavity through the guide groove 402 for injection molding. After the subsequent injection molded product is molded and cooled, the slide 701 will pull the core pulling plate 702 when sliding, and the core pulling plate 702 moves in the injection mold cavity to push up the injection molded product, thereby completing the core pulling operation to take out the injection molded product.

[0039] In this embodiment, the implementation scenario is specifically as follows: when the injection molded product is produced, the injection molding raw material is poured into the inner side of the rear template 2 and the front template 3 through the injection molding tube 401, and the injection molding raw material is introduced into the guide groove 402 after entering, and the injection molding raw material is introduced into the injection mold cavity through the guide groove 402 for injection molding. After injection molding, the water pump 501 is started to extract the cooling water in the cooling water tank 5 through the pumping pipe 502, and enters the cooling coil 6 under the transmission of the water supply pipe 503, and the cooling water in the cooling coil 6 will eventually flow back into the cooling water tank 5, so that when the injection molded product is taken out, the rear template 2 is quickly cooled and cooled, and then the injection molded product is cooled for easy removal. After the injection molded product is formed and cooled, the front template 3 is opened upward to open the mold, and the front template 3 will drive the driving gear when opening the mold. The rod 705 moves upward and drives the rotating rod 703 to rotate under the meshing of the transmission gear 704, so that the end of the rotating rod 703 with a thread on the outside rotates inwardly toward the inside of the slide 701, thereby pulling the slide 701 to move to the outside of the rear template 2. When the slide 701 is pulled, the core pulling operation is performed through the core pulling plate 702 to take out the injection molded product. At the same time, when the slide 701 moves, the top block 706 will be pushed up, so that the front template 3 and the rear template 2 can be quickly opened. The whole operation process is simple and convenient. Compared with the existing core pulling mechanism and mold of the slider in the rear mold, the utility model can reduce the volume of the mold through design, complete the core pulling operation while opening the mold, and has a simple structure to reduce production costs. At the same time, the injection molded product is quickly cooled before core pulling, which greatly improves production efficiency.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rear mold inner slider core pulling mechanism, comprising a base (1), characterized in that: A rear template (2) is fixedly mounted on the top of the base (1), a front template (3) is slidably connected to the top of the rear template (2), a top plate (4) is fixedly mounted on the top of the front template (3), a cooling water tank (5) is fixedly mounted on the left side of the rear template (2), a cooling coil (6) adapted for use with the cooling water tank (5) is fixedly mounted inside the rear template (2), and further comprises: A mold opening core pulling mechanism (7) is fixedly mounted on the left and right ends of the interior of the rear mold plate (2), and the mold opening core pulling mechanism (7) is used to automatically pull the core when the mold is opened.

2. A rear mold inner slider core pulling mechanism according to claim 1, characterized in that: The four corners of the front template (3) are fixedly connected with sliding rods (301), and the four groups of sliding rods (301) are slidably connected to the rear template (2). The top plate (4) is fixedly connected to the front template (3) via a plurality of groups of mounting bolts.

3. The rear mold inner slider core pulling mechanism according to claim 1, characterized in that: An injection tube (401) is fixedly mounted at the right end inside the top plate (4), the bottom end of the injection tube (401) extends to the top of the rear template (2), and a guide groove (402) is provided inside the rear template (2) and at the bottom of the injection tube (401).

4. The rear mold inner slider core pulling mechanism according to claim 1, characterized in that: A water pump (501) is fixedly installed on the front of the cooling water tank (5); the input end of the water pump (501) is connected to the cooling water tank (5) via a water pumping pipe (502); the output end of the water pump (501) is fixedly connected to one end of the cooling coil (6) via a water supply pipe (503); and the other end of the cooling coil (6) is connected to the cooling water tank (5).

5. The rear mold inner slider core pulling mechanism according to claim 1, characterized in that: A heat insulation plate (504) is fixedly installed between the cooling water tank (5) and the rear template (2); a water filling cover (505) is threadedly connected to the top of the cooling water tank (5); a heat dissipation groove is provided on the left side of the cooling water tank (5); and a plurality of heat dissipation fins (506) are fixedly connected to the inner side of the heat dissipation groove.

6. The rear mold inner slider core pulling mechanism according to claim 1, characterized in that: The mold opening and core pulling mechanism (7) comprises a slide seat (701) slidably connected to the front and rear ends of the rear mold plate (2); the opposite sides of the two groups of slide seats (701) are fixedly connected to the core pulling plates (702); the sides of the two groups of slide seats (701) away from each other are threadedly connected to the rotating rods (703); the ends of the two groups of rotating rods (703) away from each other are fixedly connected to the transmission gears (704); and the front side of the front mold plate (3) is meshed with the transmission gear (704) via a driving gear rod (705).

7. A rear mold inner slider core pulling mechanism according to claim 6, characterized in that: A top block (706) is fixedly installed inside the front template (3) and on the top of the slide seat (701). The ends of the two sets of rotating rods (703) that are away from each other are rotatably connected to the rear template (2) via a bearing seat (707). The top end of the driving gear rod (705) is fixedly connected to the front template (3) via a connecting column (708).

8. A mold, characterized in that: The method comprises the rear mold inner slider core pulling mechanism according to any one of claims 1 to 7, and further comprises: A lower mold (8) and an upper mold (9), wherein the lower mold (8) and the upper mold (9) are fixedly mounted inside the rear mold plate (2) and the front mold plate (3) respectively.

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