Novel injection mold for plastic part production

Abstract

The utility model discloses a novel injection mold for plastic part production, which comprises a lower backing plate, an upper backing plate, a lower mold body and an upper mold body, the upper end of the lower mold body is fixedly connected with a mold core, the center of the upper surface of the mold core is provided with a mounting hole, the lower end of the mounting hole is provided with a mounting plate, the mounting plate is fixedly connected to the lower end of the mounting hole, and the upper end of the mounting plate is fixedly connected with the mold core. An air cylinder is fixedly connected to the upper end of the mounting plate, a top plate is fixedly connected to the output end of the air cylinder, an upper mold body is fixedly connected to the lower end of the upper padding plate, a cavity is formed in the lower end face of the upper mold body, and a pouring hole is formed in the center of the cavity. Through the arrangement of the cooling groove, the pouring hole and the ejection mechanism, the mold forming time is shortened, raw materials are saved, the working efficiency is improved, and the working time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping feeding, in particular to a new injection mold for plastic part production. Background Art

[0002] Injection molding is one of the most commonly used molding molds in the production of thermoplastic plastic parts. The processing equipment corresponding to the plastic injection mold is a plastic injection molding machine. First, the plastic is heated and melted in the heating barrel at the bottom of the injection machine, and then under the push of the screw or plunger of the injection machine, it enters the mold cavity through the nozzle of the injection machine and the gating system of the mold. The plastic cools and hardens to form a shape, and the product is obtained after demolding.

[0003] In the existing technology, there are problems such as slow cooling speed after the plastic part production mold is formed, and the problem that the gating is not carried out by using a gating pipe during pouring, which finally leads to low production efficiency and slow time consumption of the product. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art, and to propose a new injection mold for plastic part production.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A new injection mold for plastic part production, including a lower backing plate, an upper backing plate, a lower mold body and an upper mold body. A core is fixedly connected to the upper surface of the lower mold body. A mounting hole is provided in the center of the upper surface of the core. A mounting plate is fixedly connected to the lower end of the mounting hole. A cylinder is fixedly connected to the upper surface of the mounting plate. The output end of the cylinder is fixedly connected to a top plate. The upper mold body is fixedly connected to the lower surface of the upper backing plate. A cavity is provided on the lower surface of the upper mold body, and a gating hole is provided in the center of the cavity.

[0007] Preferably, positioning columns are fixedly connected to the four corners of the upper surface of the lower mold body, and springs are provided outside the positioning columns.

[0008] Preferably, positioning holes are provided at the corners of the lower end of the upper mold body, and the outer diameter of the positioning column is matched with the size of the positioning hole.

[0009] Preferably, a cooling groove is provided on the upper surface of the lower mold body.

[0010] Preferably, the mounting plate is fixedly connected to the lower end of the mounting hole through an internal hexagonal stud.

[0011] Preferably, threaded holes of the same size are provided on both sides of the upper backing plate.

[0012] Compared with the prior art, the utility model has the following advantages;

[0013] The utility model shortens the mold forming time by setting a cooling tank, a pouring hole and an ejection mechanism, saves raw materials, improves work efficiency and saves working time.

[0014] Compared with the original design, the utility model has a cooling tank. After the plastic solution starts to enter the cavity, the cooling tank starts to inject water, which can accelerate the plastic mold speed, save the plastic mold time and improve work efficiency.

[0015] Compared with the original design, the utility model has a pouring hole, which saves the complex feeding operation of the original design. This design only needs to inject the melted plastic solution into the core and the cavity through the pouring port and then wait for cooling and molding.

[0016] Compared with the original design, the utility model replaces the ejection mechanism driven by a motor with an ejection mechanism driven by a cylinder. The cylinder has a straight up and down function. Using a cylinder instead of a motor can improve work efficiency. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a new injection mold for plastic part production proposed by the utility model;

[0018] Figure 2 It is a structural sectional view of a new injection mold for plastic part production proposed by the utility model;

[0019] Figure 3 It is a partially enlarged schematic view of a new injection mold for plastic part production proposed by the utility model.

[0020] Figure 4 It is a left side sectional view of a new injection mold for plastic part production proposed by the utility model.

[0021] In the figure: 1 lower backing plate, 2 lower die body, 3 core, 4 cooling tank, 5 positioning column, 6 spring, 7 upper backing plate, 8 upper die body, 9 threaded hole, 10 pouring hole, 11 cavity, 12 positioning hole, 13 mounting plate, 14 socket head cap screw, 15 cylinder, 16 top plate, 17 mounting hole. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments.

[0023] Figures 1-4, a new injection mold for plastic part production, including a lower backing plate 1, an upper backing plate 7, a lower mold body 2 and an upper mold body 8. At the four corners of the upper surface of the lower mold body 2, positioning columns 5 are fixedly connected. A spring 6 is provided outside the positioning column 5. This design can play a buffering role when the upper mold body 8 and the lower mold body 2 are matched. Positioning holes 12 are opened at each corner of the lower end of the upper mold body 8. The outer diameter size of the positioning column 5 is matched with the size of the positioning hole 12. This design is to ensure that the core 3 and the cavity 11 can be perfectly matched to ensure that the product meets the qualified requirements. A cooling groove 4 is provided on the upper surface of the lower mold body 2. The function of the cooling groove is to accelerate the mold forming and improve the working efficiency. The upper end of the lower mold body 2 is fixedly connected with a core 3. In the center of the upper surface of the core 3, there is a mounting hole 17. At the lower end of the mounting hole 17, there is a mounting plate 13. The mounting plate 13 is fixedly connected to the lower end of the mounting hole 17. The mounting plate 13 is fixedly connected to the lower end of the mounting hole 17 through an internal hexagonal stud 14. Threaded connection can make disassembly more convenient. The upper end of the mounting plate 13 is fixedly connected with a cylinder 15. The output end of the cylinder 15 is fixedly connected with a top plate 16. The lower end of the upper backing plate 7 is fixedly connected with an upper mold body 8. A cavity 11 is opened on the lower end surface of the upper mold body 8. A pouring hole 10 is opened in the center of the cavity 11. By injecting the solution through the pouring hole, the working efficiency is improved and human resources are saved. Threaded holes 9 of the same size are provided on both sides of the upper backing plate 7. The movement of the upper mold body can be realized by threaded connection between the threaded hole 9 and the mounting ring.

[0024] The functional principle of the present utility model can be elaborated through the following operation mode:

[0025] When injecting and producing plastic parts, the melted plastic is added into the core 3 and the cavity 11 through the pouring hole 10. During the plastic part process, coolant is injected through the cooling groove 4 to achieve a cooling effect and accelerate the plastic part forming. After the plastic part injection action is completed, through the cylinder 15 fixedly connected to the mounting plate 13 below the mounting hole 17, the output end of the cylinder 15 above is fixedly connected with the top plate 16. The formed plastic part is ejected from the core by driving the top plate 16 through the up and down linear movement of the cylinder. Also, since threaded holes 9 are opened on both sides of the upper backing plate 7, the threaded holes 9 can be used to install a lifting ring to move the mold. Positioning columns 5 are fixedly connected to each corner of the upper end of the lower mold body 2. A spring 6 is provided outside the positioning column 5. Positioning holes 12 are opened at each corner of the lower end surface of the upper mold body 4. The positioning column 5, the spring 6 and the positioning hole 12 can achieve a buffering effect during the production process.

[0026] The above is only the preferred specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A new type of injection mold for producing plastic parts, comprising a lower backing plate (1), an upper backing plate (7), a lower mold body (2) and an upper mold body (8), characterized in that: The upper surface of the lower mold body (2) is fixedly connected to a core (3), a mounting hole (17) is provided in the center of the upper surface of the core (3), a mounting plate (13) is fixedly connected to the lower end of the mounting hole (17), a cylinder (15) is fixedly connected to the upper surface of the mounting plate (13), an output end of the cylinder (15) is fixedly connected to a top plate (16), the lower surface of the upper pad (7) is fixedly connected to an upper mold body (8), a mold cavity (11) is provided on the lower surface of the upper mold body (8), and a pouring hole (10) is provided in the center of the mold cavity (11).

2. A new type of injection mold for producing plastic parts according to claim 1, characterized in that: Positioning columns (5) are fixedly connected to the four corners of the upper surface of the lower mold body (2), and springs (6) are provided on the outer sides of the positioning columns (5).

3. A new type of injection mold for producing plastic parts according to claim 2, characterized in that: Positioning holes (12) are provided at each corner of the lower end of the upper mold body (8), and the outer diameter of the positioning column (5) is matched with the size of the positioning hole (12).

4. A new type of injection mold for producing plastic parts according to claim 1, characterized in that: The upper surface of the lower mold body (2) is provided with a cooling groove (4).

5. A new type of injection mold for producing plastic parts according to claim 1, characterized in that: The mounting plate (13) is threadedly connected to the lower end of the mounting hole (17) via a hexagonal screw (14).

6. A new type of injection mold for producing plastic parts according to claim 1, characterized in that: Threaded holes (9) of the same size are provided on both side surfaces of the upper pad (7).

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