Brush rubber coating mold

Abstract

The utility model relates to the technical field of brush production, and discloses a brush rubber coating mold which comprises a base, an upper mold and a lower mold, limiting sliding holes are formed in the four corners of the upper mold, limiting sliding rods are vertically inserted into the four limiting sliding holes, the bottom ends of the four limiting sliding rods are fixed to the upper end face of the base, the lower mold is arranged under the upper mold, and the lower mold is arranged under the upper mold. A supporting plate is fixedly installed on one side of the upper end face of the base, a first air cylinder is fixedly installed at the top end of the supporting plate, the piston end of the first air cylinder is fixed to the upper end face of the upper die, the overturning assemblies are started, and the product faces downwards; after the turnover mechanism is turned over, the product can be automatically demoulded under the gravity of the product, auxiliary demoulding is carried out through the ejection assembly, an ejector pin of the ejection assembly moves downwards to eject the product out of a lower mould cavity, demoulding is completed, the turnover assembly is matched with the ejection assembly to quickly demould, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of brush manufacturing technology, specifically to a brush coating mold. Background Technology

[0002] The brush coating mold is the core tooling for manufacturing coated brushes using a two-stage injection molding technology. Its working principle is as follows: the brush substrate (such as hard plastic materials like ABS or PP) is formed into a skeleton structure using a first mold. The formed substrate is then placed into a second mold, and a soft plastic material is injected onto the substrate surface to form a functional coating layer (such as an anti-slip handle or cleaning bristles).

[0003] Existing devices have some drawbacks in use. For example, existing demolding technology fails to make full use of the physical properties of the product itself to assist in demolding. For instance, it does not make reasonable use of the product's own gravity to achieve automatic demolding, resulting in high energy consumption and slow demolding speed. This cannot meet the requirements of modern manufacturing industry for efficient, energy-saving, and high-quality production. Utility Model Content

[0004] The purpose of this invention is to provide a brush coating mold that solves the problems of high energy consumption and slow demolding speed during the demolding process.

[0005] This utility model provides the following technical solution: a brush coating mold, including a base, an upper mold, and a lower mold. The upper mold has limit sliding holes at its four corners, and each of the four limit sliding holes has a vertically inserted limit sliding rod. The bottom ends of the four limit sliding rods are fixed to the upper surface of the base. The lower mold is located directly below the upper mold. Both sides of the lower mold have flipping components for flipping the lower mold. The lower surface of the lower mold has an ejection component for ejecting the product. A support plate is fixedly installed on one side of the upper surface of the base. A first cylinder is fixedly installed on the top of the support plate, and the piston end of the first cylinder is fixed to the upper surface of the upper mold.

[0006] As a preferred embodiment of the above technical solution, the flipping assembly includes a mounting bracket fixedly installed on the upper surface of the base. A drive motor is fixedly installed at the top of the mounting bracket, a drive shaft is fixedly installed at the output end of the drive motor, a connecting frame is fixedly installed at the end of the drive shaft away from the drive motor, and a load-bearing plate is fixedly connected to each end of the connecting frame. The end face of the load-bearing plate is fixed to the outer wall of the lower mold.

[0007] As a preferred embodiment of the above technical solution, the ejection assembly includes three fixed frames fixedly installed on the lower end face of the lower mold. A second cylinder is fixedly installed on each fixed frame, and an ejector pin is fixedly installed on the piston end of each second cylinder. The lower end face of the lower mold has three through holes adapted to the ejector pins.

[0008] As a preferred embodiment of the above technical solution, the upper mold is provided with a plurality of injection ports for introducing materials, and the injection ports are connected to the interior of the cavity of the upper mold.

[0009] As a preferred embodiment of the above technical solution, the outer diameter of the limiting slide rod is smaller than the inner diameter of the limiting slide hole.

[0010] As a preferred embodiment of the above technical solution, the outer wall of the ejector pin is fitted to the inner wall of the perforation.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the flipping component is activated, driving the lower mold to rotate 180° so that the product faces downward. After the flipping mechanism flips, the product's own gravity will automatically demold it. The ejector component assists in demolding, with the ejector pins of the ejector component moving downward to push the product out of the lower mold cavity, thus completing the demolding. The flipping component and the ejector component work together to quickly demold, reducing manual operation and improving production efficiency. Attached Figure Description

[0013] Figure 1 A first-view structural schematic diagram of a brush coating mold;

[0014] Figure 2 This is a second-view structural schematic diagram of a brush coating mold;

[0015] Figure 3 This is a top view of the lower mold structure.

[0016] Figure 4 This is a top view of the upper mold structure.

[0017] In the diagram: 1. Base; 11. Upper mold; 111. Limiting slide hole; 12. Lower mold; 13. Support plate; 14. First cylinder; 15. Limiting slide rod; 16. Injection port; 2. Flip assembly; 21. Mounting bracket; 22. Drive motor; 23. Drive shaft; 24. Connecting frame; 25. Load-bearing plate; 3. Ejection assembly; 31. Fixing frame; 32. Second cylinder; 33. Ejector pin; 34. Through hole. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example

[0019] like Figures 1-4As shown, this utility model provides a technical solution: a brush coating mold, including a base 1, an upper mold 11, and a lower mold 12. The upper mold 11 has multiple injection ports 16 for introducing materials, which are connected to the cavity of the upper mold 11. Limiting sliding holes 111 are provided at each of the four corners of the upper mold 11, and limiting sliding rods 15 are vertically inserted into each of the four limiting sliding holes 111. The outer diameter of the limiting sliding rods 15 is smaller than the inner diameter of the limiting sliding holes 111. The bottom ends of the four limiting sliding rods 15 are fixed to the upper surface of the base 1. The lower mold 12 is located directly below the upper mold 11. Flipping components 2 for flipping the lower mold 12 are provided on both sides of the lower mold 12. An ejection component 3 for ejecting the product is provided on the lower surface of the lower mold 12. A support plate 13 is fixedly installed on one side of the upper surface of the base 1, and a first cylinder is fixedly installed on the top of the support plate 13. 14. The piston end of the first cylinder 14 is fixed to the upper end face of the upper mold 11. In actual use, the first cylinder 14 is started, and the piston rod pushes the upper mold 11 to move downward along the limiting slide bar 15 to close with the lower mold 12. The limiting slide bar 15 ensures that the upper mold 11 moves smoothly and avoids deviation. The rubber material is injected into the mold cavity through the injection port 16. The rubber material wraps the brush skeleton to form a coating layer. After the coating is completed, the first cylinder 14 drives the upper mold 11 to rise, the flipping component 2 is started, and the lower mold 12 is driven to rotate 180° so that the product faces downward. After the flipping mechanism flips, the product will automatically demold by its own gravity. The ejector component 3 assists in demolding. The ejector pin 33 of the ejector component 3 moves downward to eject the product from the cavity of the lower mold 12, completing the demolding. The flipping component 2 and the ejector component 3 cooperate to quickly demold, reduce manual operation and improve production efficiency.

[0020] As one implementation method in this embodiment, such as Figure 1As shown, the flipping assembly 2 includes a mounting bracket 21 fixedly installed on the upper surface of the base 1. A drive motor 22 is fixedly installed on the top of the mounting bracket 21. A drive shaft 23 is fixedly installed on the output end of the drive motor 22. A connecting frame 24 is fixedly installed on the end of the drive shaft 23 away from the drive motor 22. A load-bearing plate 25 is fixedly connected to the end of each connecting frame 24. The end face of each load-bearing plate 25 is fixed to the outer side wall of the lower mold 12. The ejection assembly 3 includes three fixing frames 31 fixedly installed on the lower surface of the lower mold 12. A second cylinder 32 is fixedly installed on each fixing frame 31. An ejector pin 33 is fixedly installed on the piston end of each second cylinder 32. Three through holes 34 adapted to the ejector pins 33 are opened on the lower surface of the lower mold 12. The wall is fitted to the inner wall of the perforation 34 to prevent the adhesive from flowing out of the mold cavity. In the specific use process, after the coating is completed and the upper mold 11 is lifted, the drive motor 22 starts and drives the connecting frame 24 to rotate through the drive shaft 23. This causes the lower mold 12 to rotate 180 degrees, so that the product faces down for demolding. At this time, in order to avoid the product being unable to demold by gravity alone, the piston end of the second cylinder 32 pushes the ejector pin 33 to move downward. The ejector pin 33 passes through the perforation 34 of the lower mold 12 and pushes the product out of the cavity, completing the demolding. The flipping component 2 rotates in the opposite direction, driving the lower mold 12 to return to the initial position. The ejector pin 33 in the ejection component 3 retracts into the perforation 34 (the upper end face of the ejector pin 33 is flush with the upper end face of the perforation 34), and the mold is ready to enter the next cycle.

[0021] Working principle: First, the first cylinder 14 is started. The piston rod pushes the upper mold 11 to move downward along the limiting slide bar 15 to close with the lower mold 12. The limiting slide bar 15 ensures that the upper mold 11 moves smoothly and avoids deviation. The material is injected into the mold cavity through the injection port 16. The material wraps the brush skeleton to form a coating layer. When the coating is completed and the upper mold 11 is lifted, the drive motor 22 is started. The drive shaft 23 drives the connecting frame 24 to rotate, thereby rotating the lower mold 12 180 degrees so that the product faces downward for demolding. At this time, in order to avoid the product's gravity alone being unable to demold, the piston end of the second cylinder 32 pushes the ejector pin 33 downward. The ejector pin 33 passes through the through hole 34 of the lower mold 12 and ejects the product from the cavity, completing the demolding. The flipping component 2 rotates in the opposite direction, driving the lower mold 12 to return to the initial position. The ejector pin 33 in the ejection component 3 retracts into the through hole 34 (the upper end face of the ejector pin 33 is flush with the upper end face of the through hole 34). The mold is ready to enter the next cycle.

[0022] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A brush coating mold, comprising a base (1), an upper mold (11), and a lower mold (12), characterized in that: The upper mold (11) has limit sliding holes (111) at all four corners. Limiting sliding rods (15) are vertically inserted into each of the four limit sliding holes (111). The bottom ends of the four limiting sliding rods (15) are fixed to the upper surface of the base (1). The lower mold (12) is located directly below the upper mold (11). The lower mold (12) has flipping components (2) on both sides for flipping the lower mold (12). The lower end of the lower mold (12) has an ejection component (3) for ejecting the product. A support plate (13) is fixedly installed on one side of the upper surface of the base (1). A first cylinder (14) is fixedly installed on the top of the support plate (13). The piston end of the first cylinder (14) is fixed to the upper surface of the upper mold (11).

2. The brush coating mold according to claim 1, characterized in that: The flipping assembly (2) includes a mounting bracket (21) fixedly installed on the upper surface of the base (1). A drive motor (22) is fixedly installed at the top of the mounting bracket (21). A drive shaft (23) is fixedly installed at the output end of the drive motor (22). A connecting frame (24) is fixedly installed at the end of the drive shaft (23) away from the drive motor (22). A load-bearing plate (25) is fixedly connected to the end of the connecting frame (24). The end face of the load-bearing plate (25) is fixed to the outer wall of the lower mold (12).

3. The brush coating mold according to claim 1, characterized in that: The ejection assembly (3) includes three fixed frames (31) fixedly installed on the lower end face of the lower mold (12). Each fixed frame (31) is fixedly installed with a second cylinder (32). Each piston end of the second cylinder (32) is fixedly installed with an ejector pin (33). The lower end face of the lower mold (12) has three through holes (34) adapted to the ejector pins (33).

4. The brush coating mold according to claim 1, characterized in that: The upper mold (11) has multiple injection ports (16) for introducing materials, and the injection ports (16) are connected to the cavity of the upper mold (11).

5. A brush coating mold according to claim 1, characterized in that: The outer diameter of the limiting slide bar (15) is smaller than the inner diameter of the limiting slide hole (111).

6. A brush coating mold according to claim 3, characterized in that: The outer wall of the pin (33) is attached to the inner wall of the perforation (34).

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