Facial cream bottle cap injection molding mold

Abstract

The utility model discloses a face cream bottle cap injection molding mold, which belongs to the technical field of injection molding molds and comprises a mold component, and the mold component comprises a hot runner, a fixing plate, an ejector plate, a front mold core and a rear mold core. The face cream bottle cap injection molding mold has the advantages of quick demolding, product quality protection, mold service life prolonging, consistency and stability, and the two oil cylinders are controlled to drive the ejector plate to move upwards, so that the face cream bottle cap can be demolded. Four convex blocks are arranged on the inner wall of the mounting block, and four concave grooves are formed in the inner wall of the positioning block, so that the device can provide enough pulling resistance during demolding, damage and deformation to a product during demolding are avoided, stable product quality is ensured, extra loss of the mold can be reduced through quick and smooth demolding, and the production efficiency is improved. And through the design of the convex blocks and the concave grooves, the quality of products obtained after production and demolding is consistent, and the consistency and stability of the products are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding dies, and particularly relates to an injection molding die for a cream bottle cap. Background Art

[0002] An injection molding die is a die used in the plastic injection molding process. In the plastic injection molding process, plastic pellets are heated and melted, and then injected into the die. Through high pressure, it solidifies and forms in the die cavity, finally forming the required plastic product. An injection molding die usually consists of two parts: an upper die and a lower die. When the plastic is injected into the die and solidifies, the upper die and the lower die are separated, thus releasing the formed plastic product. This forming method can produce a large number of identical or similar plastic products, so it is widely used in the manufacturing industry, such as the production of automotive parts, the outer shells of household appliances, toys, etc.

[0003] When producing cream bottle caps, injection molds are usually used for mass production. However, there are still certain deficiencies in the existing injection molds. When the cream bottle cap products are produced, due to the action of a certain force between the products and the molds, the demolding of the injection products is relatively troublesome. And if the external force is too large during the demolding process, it will cause damage and deformation to the injection products, affecting the product quality. Therefore, an injection molding die for a cream bottle cap is proposed to solve the above problems. Summary of the Utility Model

[0004] In view of one or more of the above defects or improvement requirements in the prior art, the utility model provides an injection molding die for a cream bottle cap, which has the advantages of rapid demolding, protecting product quality, improving the die life, consistency, and stability.

[0005] To achieve the above object, the utility model provides an injection molding die for a cream bottle cap, including a die assembly;

[0006] The die assembly includes a hot runner, a fixed plate, a thimble plate, a front die core, and a rear die core;

[0007] The rear die core is located above the front die core. Four mounting blocks are assembled on the upper end surface of the front die core and are distributed in a rectangle. Four convex blocks are arranged on the lower side of the outer peripheral surfaces of the four mounting blocks. Injection holes are arranged at the center points of the upper end surfaces of the four mounting blocks. An installation groove is arranged on the upper end surface of the front die core, and a pushing block is arranged in the installation groove. Four positioning blocks are assembled on the upper end surface of the pushing block and are distributed in a rectangle. The four positioning blocks are respectively sleeved above the four mounting blocks. Each of the four positioning blocks has a rectangular cavity, and four concave grooves are arranged on the inner wall of the rectangular cavity. The four convex blocks arranged on the outer peripheral surfaces of the four mounting blocks are respectively engaged and connected with the four concave grooves in the rectangular cavities of the four positioning blocks.

[0008] As a further improvement of the present utility model, four nozzles are assembled on the upper end face of the hot runner, and the four nozzles are distributed in a rectangle. One end of the four nozzles penetrates through the fixed plate and the ejector pin plate and extends to the lower ends of the four mounting blocks. An air cylinder is also assembled on the lower end face of the hot runner.

[0009] As a further improvement of the present utility model, a number of ejector rods are assembled on the upper end face of the ejector pin plate, and one end of each of the a number of ejector rods penetrates through the front mold core and is connected to the push block.

[0010] As a further improvement of the present utility model, an oil cylinder is assembled on each side of the lower end face of the fixed plate. Connecting rods are arranged at the output ends of the two oil cylinders, and one end of each connecting rod penetrates through the fixed plate and is connected to the ejector pin plate.

[0011] As a further improvement of the present utility model, four rectangular grooves are arranged on the lower end face of the rear mold core, and the four rectangular grooves correspond to the four positioning blocks.

[0012] As a further improvement of the present utility model, clamping grooves are arranged at the four corners of the lower end face of the rear mold core, and clamping blocks are arranged at the four corners of the upper end face of the front mold core, and the four clamping blocks correspond to the four clamping grooves.

[0013] Generally speaking, compared with the prior art by the above technical solutions conceived by the present utility model, the beneficial effects include:

[0014] For the injection molding die of the cream bottle cap of the present utility model, after the cream bottle cap is injection molded, by controlling the two oil cylinders to drive the ejector pin plate upward, the a number of ejector rods installed on the upper end face of the ejector pin plate drive the push block upward, so that the four positioning blocks are driven upward, and finally the cream bottle caps injection molded outside the four mounting blocks can be demolded, making the demolding process smoother and faster, thereby improving production efficiency. By arranging four convex blocks on the inner wall of the mounting block and four concave grooves on the inner wall of the positioning block, the device can provide sufficient anti-pulling force during demolding, avoiding damage and deformation to the product during demolding, thus ensuring stable product quality. Through rapid and smooth demolding, additional wear and tear on the mold can be reduced, the service life of the mold can be extended, production costs can be reduced, and through the design of the convex blocks and concave grooves, the quality of the products after production and demolding is consistent, improving the consistency and stability of the products. Description of the Drawings

[0015] Figure 1 Schematic diagram of the overall installation structure of the present utility model;

[0016] Figure 2 Schematic diagram of the overall installation structure of the present utility model;

[0017] Figure 3Schematic diagram of the disassembly structure of the front mold core and the rear mold core of the present utility model;

[0018] Figure 4 Schematic diagram of the structure of the front mold core, mounting block and positioning block of the present utility model;

[0019] Figure 5 Schematic diagram of the installation structure of the ejector block and the positioning block of the present utility model.

[0020] In all the drawings, the same reference numerals represent the same technical features, specifically: 1. Mold assembly; 2. Hot runner; 21. Hot nozzle; 22. Pneumatic cylinder; 3. Fixed plate; 31. Oil cylinder; 4. Ejector plate; 41. Ejector rod; 5. Front mold core; 51. Mounting block; 511. Convex block; 512. Injection hole; 52. Ejector block; 53. Positioning block; 531. Concave groove; 54. Clamping block; 6. Rear mold core; 61. Rectangular groove; 62. Card slot. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment

[0023] Provided by Figures 1-5 a plastic injection molding mold for a cream bottle cap, including a mold assembly 1;

[0024] The mold assembly 1 includes a hot runner 2, a fixed plate 3, an ejector plate 4, a front mold core 5 and a rear mold core 6;

[0025] Four hot nozzles 21 are assembled on the upper end surface of the hot runner 2 and the four hot nozzles 21 are distributed in a rectangle. One end of the four hot nozzles 21 penetrates through the fixed plate 3 and the ejector plate 4 and extends to the lower ends of the four mounting blocks 51. A pneumatic cylinder 22 is also assembled on the lower end surface of the hot runner 2;

[0026] A number of ejector rods 41 are assembled on the upper end surface of the ejector plate 4 and one end of each of the number of ejector rods 41 penetrates through the front mold core 5 and is connected to the ejector block 52;

[0027] One oil cylinder 31 is assembled on each side of the lower end surface of the fixed plate 3. The output ends of the two oil cylinders 31 are both connected with connecting rods and one end of the connecting rods penetrates through the fixed plate 3 and is connected to the ejector plate 4;

[0028] The rear mold core 6 is located at the upper end of the front mold core 5. Four mounting blocks 51 are assembled on the upper end surface of the front mold core 5, and the four mounting blocks 51 are distributed in a rectangle. Four convex blocks 511 are arranged on the lower side of the outer peripheral surfaces of the four mounting blocks 51. Injection holes 512 are arranged at the center points of the upper end surfaces of the four mounting blocks 51. An installation groove is arranged on the upper end surface of the front mold core 5, and a push block 52 is arranged in the installation groove. Four positioning blocks 53 are assembled on the upper end surface of the push block 52, and the four positioning blocks 53 are distributed in a rectangle. The four positioning blocks 53 are respectively sleeved above the four mounting blocks 51. Each of the four positioning blocks 53 has a rectangular cavity, and four concave grooves 531 are arranged on the inner wall of the rectangular cavity. The four convex blocks 511 arranged on the outer peripheral surfaces of the four mounting blocks 51 are respectively in interference fit connection with the four concave grooves 531 in the rectangular cavities of the four positioning blocks 53.

[0029] In this embodiment, after the face cream bottle cap is injection molded, by controlling the two oil cylinders 31, the ejector plate 4 is driven upward, so that a plurality of ejector rods 41 installed on the upper end surface of the ejector plate 4 drive the push block 52 upward, so that the four positioning blocks 53 are driven upward. Finally, the face cream bottle cap injection molded outside the four mounting blocks 51 can be demolded, making the demolding process smoother and faster, thus improving production efficiency. By arranging four convex blocks 511 on the inner wall of the mounting block 51 and four concave grooves 531 on the inner wall of the positioning block 53, sufficient anti-pulling force can be provided when the device is demolded, avoiding damage and deformation to the product during demolding, thus ensuring stable product quality. Through fast and smooth demolding, additional wear and tear on the mold can be reduced, the service life of the mold can be extended, and production costs can be reduced. Through the design of the convex blocks 511 and the concave grooves 531, the quality of the products after production and demolding is consistent, improving the consistency and stability of the products.

[0030] Further preferably, the length of the convex block 511 is 11.88 mm, and the depth is 0.5 mm. The concave groove 531 is corresponding to the convex block 511 and is in interference fit connection with it. An arc surface is arranged on the outside of the convex block 511, and the radii of the arc surfaces on both sides are both R0.45. The arc surface of the convex block 511 is also arranged in an arc shape at the connection with the mounting block 51. This arc surface is a concave arc surface, and the radius of this arc surface is R0.2. By arranging the convex block 511 and the concave groove 531, the device can achieve smooth demolding and high anti-pulling force at the same time, avoiding damage to the product during the demolding process.

[0031] Specifically, referring to FIGS. 1-3, four rectangular grooves 61 are arranged on the lower end surface of the rear mold core 6, and the four rectangular grooves 61 correspond to the four positioning blocks 53.

[0032] In this embodiment, the rear mold core 6 is provided for upper limiting of the front mold core 5, and the four rectangular grooves 61 are sleeved on the upper ends of the four positioning blocks 53.

[0033] Specifically, referring to Figures 1-4 , at the four corners of the lower end face of the rear mold core 6, there are card slots 62 provided, and at the four corners of the upper end face of the front mold core 5, there are latch blocks 54 provided, and the four latch blocks 54 correspond to the four card slots 62.

[0034] In this embodiment, by providing four card slots 62 on the lower end face of the rear mold core 6 and four latch blocks 54 on the upper end face of the front mold core 5, the front mold core 5 and the rear mold core 6 can be more tightly and stably installed in an overlapping manner.

[0035] The injection molding die for the cream bottle cap of the present utility model:

[0036] During the actual use process, by controlling the air cylinder 22, the movement of the needle valve in the hot runner 2 is controlled, so that the injection plastic is conveyed from the four nozzles 21 to the four mounting blocks 51, and is injected from the injection holes 512 provided on the mounting blocks 51, so that the injection plastic is molded between the mounting blocks 51 and the positioning blocks 53. After the injection plastic is cooled and molded, the rear mold core 6 is disassembled. By controlling the two oil cylinders 31, the ejector plate 4 is driven to rise, so that a plurality of ejector rods 41 installed on the upper end face of the ejector plate 4 push the push block 52 upward, so that the positioning block 53 is disengaged from the mounting block 51 upward, and thus the injection molded cream bottle cap product can be taken off;

[0037] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An injection molding die for a cream bottle cap, characterized in that: It includes a die assembly (1); The die assembly (1) includes a hot runner (2), a fixed plate (3), an ejector plate (4), a front mold core (5) and a rear mold core (6); The rear mold core (6) is located above the front mold core (5). Four mounting blocks (51) are assembled on the upper end surface of the front mold core (5), and the four mounting blocks (51) are arranged in a rectangular distribution. Four convex blocks (511) are provided on the lower side of the outer peripheral surfaces of the four mounting blocks (51). Injection holes (512) are provided at the center points of the upper end surfaces of the four mounting blocks (51). An installation groove is provided on the upper end surface of the front mold core (5), and a push block (52) is arranged in the installation groove. Four positioning blocks (53) are assembled on the upper end surface of the push block (52), and the four positioning blocks (53) are arranged in a rectangular distribution. The four positioning blocks (53) are respectively sleeved above the four mounting blocks (51). Each of the four positioning blocks (53) has a rectangular cavity, and four concave grooves (531) are provided on the inner wall of the rectangular cavity. The four convex blocks (511) provided on the outer peripheral surfaces of the four mounting blocks (51) are respectively engaged with the four concave grooves (531) in the rectangular cavities of the four positioning blocks (53).

2. The injection molding die for the cream bottle cap according to claim 1, wherein Four hot nozzles (21) are assembled on the upper end surface of the hot runner (2), and the four hot nozzles (21) are arranged in a rectangular distribution. One end of each of the four hot nozzles (21) penetrates through the fixed plate (3) and the ejector plate (4) and extends to the lower ends of the four mounting blocks (51). An air cylinder (22) is also assembled on the lower end surface of the hot runner (2).

3. The injection molding die for the cream bottle cap according to claim 1, characterized in that A number of ejector rods (41) are assembled on the upper end surface of the ejector plate (4), and one end of each of the number of ejector rods (41) penetrates through the front mold core (5) and is connected to the push block (52).

4. The injection molding die for the cream bottle cap according to claim 3, characterized in that, One oil cylinder (31) is assembled on each side of the lower end surface of the fixed plate (3). Connecting rods are provided at the output ends of the two oil cylinders (31), and one end of each connecting rod penetrates through the fixed plate (3) and is connected to the ejector plate (4).

5. The injection molding die for the cream bottle cap according to claim 1, characterized in that, Four rectangular grooves (61) are provided on the lower end surface of the rear mold core (6), and the four rectangular grooves (61) correspond to the four positioning blocks (53).

6. The injection molding die for the cream bottle cap according to claim 1, wherein, Four clamping grooves (62) are provided at the four corners of the lower end surface of the rear mold core (6). Four clamping blocks (54) are provided at the four corners of the upper end surface of the front mold core (5), and the four clamping blocks (54) correspond to the four clamping grooves (62).

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