Automobile universal joint dust cover mold

Abstract

The invention discloses an automobile universal joint dust cover mold which comprises a cold runner assembly, a cold runner assembly, a hot runner assembly, a hot runner assembly and a hot runner assembly, and the cold runner assembly is provided with a connecting port in butt joint with an injection machine; the heating plate is arranged below the cold runner assembly and is used for heating the injection material; the upper mold plate is connected to the lower surface of the heating plate, and a first mold cavity is formed in the lower surface of the upper mold plate; the lower template is arranged below the upper template; the mold core lifting frame is arranged between the lower mold plate and the upper mold plate, and a mold core assembly is rotationally mounted on the inner side of the mold core lifting frame so as to support the inner wall of an injected dust cover; through the arrangement of the cold runner assembly, the connecting port, the lower mold plate, the mold core lifting frame, the upper mold plate and the mold core assembly, the mold is simple in structure and can be matched with an external shuttle machine, automatic feeding is achieved, the inconvenience caused by manual sizing material feeding for vulcanization processing after manual demolding is avoided, and the processing time is saved.

Description

Technical Field

[0001] The present invention specifically relates to a dust cover mold for an automotive universal joint. Background Art

[0002] Generally, the mold structure for producing the dust cover is as Figure 5 shown. The mold is composed of an upper template, a lower template, and a core lifting frame. The rubber compound is processed into a specific shape by the previous process, and then an artificial rubber compound is placed on each of the upper and lower surfaces of the core; by providing pressure and temperature through vulcanization equipment and maintaining for a certain period of time, when the mold is opened, the upper template is first opened, and then the core lifting frame is lifted, and an artificial air gun is used to assist in removing the product, completing the entire vulcanization process.

[0003] When the existing mold for processing the dust cover is in use, manual feeding is required, which is time-consuming and laborious, has high requirements for manual skills, and manual feeding may cause accidental operation and collision to the core. The position of the core needs to be manually adjusted. If the position of the core is not in place, it will greatly affect the product qualification rate, with low automation and low production efficiency. Therefore, we propose a dust cover mold for an automotive universal joint. Summary of the Invention

[0004] The purpose of the present invention is to provide a dust cover mold for an automotive universal joint to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A dust cover mold for an automotive universal joint, comprising:

[0006] A cold runner assembly, which has a connection port for docking with an injection machine on it;

[0007] A heating plate, arranged below the cold runner assembly to heat the injection material;

[0008] An upper template, connected to the lower surface of the heating plate, and a first mold cavity is opened on the lower surface of the upper template;

[0009] A lower template, arranged below the upper template;

[0010] A core lifting frame, arranged between the lower template and the upper template, and a core assembly is rotatably installed inside the core lifting frame to support the inner wall of the injection dust cover.

[0011] Preferably, the core assembly includes a rotating block, a core, a positioning hole, and a rotating shaft. The rotating block is rotatably installed inside the core lifting frame through the rotating shafts at both ends, and the core is provided on the side wall of the rotating block, and positioning holes are opened at both ends inside the rotating block.

[0012] Preferably, positioning grooves corresponding to the rotating block are opened on the lower template, and positioning rods for cooperating with the positioning holes are provided at both ends inside the positioning grooves.

[0013] Preferably, the upper end of the positioning rod has a chamfer.

[0014] Preferably, a connecting block is rotatably provided on one end face of the core lifting frame, and a transmission chain for driving the rotating shaft to rotate is provided on the connecting block.

[0015] Preferably, a plurality of blocking rods are staggeredly installed between the side wall of the rotating block and the core, and there are a plurality of the blocking rods.

[0016] Preferably, the lower end of the side wall of the core lifting frame has a slider.

[0017] Preferably, the lower template includes a second mold cavity and a diversion groove, the second mold cavity and the diversion groove are arranged side by side, and the end of the diversion groove is communicated with the inside of the second mold cavity.

[0018] Preferably, a heat insulation plate for isolating heat transfer is provided between the heating plate and the cold runner assembly.

[0019] Preferably, the lower surface of the cold runner assembly has an injection pipe communicated with the inside of the connection port, and the lower end of the injection pipe is communicated with the inside of the first mold cavity.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] By providing a cold runner assembly, a connection port, a lower template, a core lifting frame, an upper template and a core assembly, the present invention avoids the need for manual feeding in the traditional method, which has a low degree of automation. The structure of the present invention is simple, and it can cooperate with an external shuttle to realize automatic feeding, so that the core lifting frame can automatically withdraw from between the lower template and the upper template for demolding. At the same time, another core lifting frame can be sent in for vulcanization processing, saving the inconvenience of manual demolding and then manual gluing for vulcanization processing, saving processing time. In addition, the cold runner design is adopted, and there is also a heat insulation plate between the heating plate and the cold runner assembly, which can effectively reduce the waste of injection materials caused by the need to clean sulfides when the hot runner mold is not molded. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is an exploded structural diagram of the present invention;

[0024] Figure 3 is a schematic diagram of the core assembly of the present invention;

[0025] Figure 4 is a schematic structural diagram of the lower template of the present invention;

[0026] Figure 5 is a schematic structural diagram of an existing mold.

[0027] In the figure: 1. Cold runner assembly; 101. Injection tube; 2. Connection port; 3. Lower template; 301. Second mold cavity; 302. Flow guiding groove; 4. Core lifting frame; 401. Slide block; 5. Heat insulation plate; 6. Heating plate; 7. Upper template; 701. First mold cavity; 8. Core assembly; 801. Rotating block; 802. Core; 803. Positioning hole; 804. Rotating shaft; 805. Stop bar; 806. Connection block; 9. Positioning groove; 10. Positioning rod. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1 - 5 , the present invention provides a technical solution: an automobile universal joint dust cover mold, including:

[0030] A cold runner assembly 1, and the cold runner assembly 1 is provided with a connection port 2 for docking with an injection machine;

[0031] The cold runner assembly 1 stores the rubber material. Through the design of the cold runner, it avoids the waste of the injection material and the low utilization rate of the injection material caused by the need to clean the sulfide when the runner of the traditional hot runner mold is not in the mold because the injection material has been vulcanized.

[0032] A heating plate 6, which is arranged below the cold runner assembly 1 to heat the injection material;

[0033] It is convenient to heat the injection material, so that the injection material can flow, which is convenient for subsequent vulcanization forming;

[0034] An upper template 7, which is connected to the lower surface of the heating plate 6, and a first mold cavity 701 is opened on the lower surface of the upper template 7;

[0035] A lower template 3, which is arranged below the upper template 7;

[0036] A core lifting frame 4, which is arranged between the lower template 3 and the upper template 7, and a core assembly 8 is rotatably installed inside the core lifting frame 4 to support the inner wall of the injection dust cover;

[0037] It is convenient to cooperate the core lifting frame 4 with an external shuttle machine to automatically withdraw the core lifting frame 4 from between the upper template 7 and the lower template 3 for demolding, and at the same time, another core lifting frame 4 enters for vulcanization processing, increasing the automation degree of the device and improving the processing efficiency.

[0038] Preferably, the core assembly 8 includes a rotating block 801, a core 802, positioning holes 803 and a rotating shaft 804. The rotating block 801 is rotatably mounted inside the core lifting frame 4 through the rotating shafts 804 at both ends, and the core 802 is provided on the side wall of the rotating block 801. Positioning holes 803 are opened at both inner ends of the rotating block 801;

[0039] When the core lifting frame 4 moves between the upper template 7 and the lower template 3, it is convenient to move the core 802 into place to reduce the offset that affects the machining qualification rate.

[0040] Preferably, a positioning groove 9 corresponding to the rotating block 801 is opened on the core lifting frame 4, and positioning rods 10 that cooperate with the positioning holes 803 are provided at both inner ends of the positioning groove 9, which is convenient for better positioning the core 802.

[0041] Preferably, the upper end of the positioning rod 10 has a chamfer; it is convenient for the positioning rod 10 to better insert into the inner side of the positioning hole 803 so that the rotating block 801 moves into place.

[0042] Preferably, a connecting block 806 is rotatably arranged on one end face of the core lifting frame 4, and a transmission chain for driving the rotating shaft 804 to rotate is arranged on the connecting block 806. After the shuttle machine cooperates with the connecting block 806, it is convenient to drive a plurality of rotating shafts 804 to rotate through the transmission chain, so that it is convenient for the operator to remove the dust cover product from the core 802.

[0043] Preferably, a plurality of retaining rods 805 are staggeredly installed on the side wall of the rotating block 801 and the core 802. The retaining rods 805 are provided in plurality, which is convenient to prevent flash from sticking to the upper core lifting frame 4, so as to ensure that the flash follows the product, so as to facilitate the later treatment of the flash on the product.

[0044] Preferably, a slider 401 is provided at the lower end of the side wall of the core lifting frame 4, which is convenient for better moving the core lifting frame 4 after the core lifting frame 4 cooperates with an external shuttle machine.

[0045] Preferably, the lower template 3 includes a second mold cavity 301 and a diversion groove 302. The second mold cavity 301 and the diversion groove 302 are arranged side by side, and the end of the diversion groove 302 is communicated with the inside of the second mold cavity 301, which is convenient for better guiding the injection material into the mold cavity.

[0046] Preferably, a heat insulation plate 5 for isolating heat transfer is provided between the heating plate 6 and the cold runner assembly 1. The heat insulation plate 5 separates the heating plate 6 and the cold runner assembly 1, blocking the temperature from being conducted to the cold runner and keeping the cold runner at a relatively low temperature.

[0047] Preferably, the lower surface of the cold runner assembly 1 has an injection tube 101 connected to the inside of the connecting port 2, and the lower end of the injection tube 101 is connected to the inside of the first mold cavity 701, so as to better allow the injection material inside the cold runner assembly 1 to flow into the mold cavity.

[0048] The working principle and use process of the present invention are as follows: when in use, the cold runner assembly 1 is connected to the output end of the injection machine through the connection port 2, and the injected material flows into the guide groove 302 and the first mold cavity 701 through the injection tube 101. The guide groove 302 disperses the material to the inner side of the second mold cavity 301, and cooperates with the mold core 802 to shape the dust cover. After processing, the injection machine drives the lower mold plate 3 and the mold core lifting frame 4 to descend, and then drives the mold core lifting frame 4 to rise to separate from the lower mold plate 3. The end of the external shuttle cooperates with the connecting block 806. The core lifting frame 4 is pulled to slide out from between the upper template 7 and the lower template 3. At the same time, the shuttle pushes another core lifting frame 4 between the lower template 3 and the upper template 7. Then the molds are closed for processing. The shuttle drives the end connecting block 806 of the exited core lifting frame 4 to rotate. The connecting block 806 drives at least one rotating block 801 on the inner side of the core lifting frame 4 to rotate through the transmission chain. The operator uses the air pipe to assist in removing the dust cover product from the core 802. At this point, the production of one product is completed. This cycle is convenient for batch processing and production.

[0049] 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. An automobile universal joint dust cover mold, characterized in that, Comprising: A cold runner assembly (1) having a connection port (2) for docking with an injection molding machine on the cold runner assembly (1); A heating plate (6) disposed below the cold runner assembly (1) to heat the injection material; An upper template (7) connected to the lower surface of the heating plate (6), and a first mold cavity (701) is formed on the lower surface of the upper template (7); A lower template (3) disposed below the upper template (7); A core lifting frame (4) disposed between the lower template (3) and the upper template (7), and a core assembly (8) is rotatably installed inside the core lifting frame (4) to support the inner wall of the injection dust cover.

2. The automotive universal joint dust cover mold according to claim 1, wherein: The core assembly (8) includes a rotating block (801), a core (802), positioning holes (803) and a rotating shaft (804). The rotating block (801) is rotatably installed inside the core lifting frame (4) through the rotating shafts (804) at both ends, and a core (802) is provided on the side wall of the rotating block (801), and positioning holes (803) are formed at both ends inside the rotating block (801).

3. The dust cover mold of a universal joint for an automobile according to claim 2, characterized in that: A positioning groove (9) corresponding to the rotating block (801) is formed on the lower template (3), and positioning rods (10) cooperating with the positioning holes (803) are provided at both ends inside the positioning groove (9).

4. The automotive universal joint dust cover mold according to claim 3, characterized in that: The upper end of the positioning rod (10) has a chamfer.

5. The automotive universal joint dust cover mold according to claim 2, characterized in that: A connecting block (806) is rotatably provided on one end face of the core lifting frame (4), and a transmission chain for driving the rotating shaft (804) to rotate is provided on the connecting block (806).

6. The automotive universal joint dust cover mold according to claim 2, wherein: A plurality of stop rods (805) are staggeredly installed between the side wall of the rotating block (801) and the core (802).

7. A dust cover mold for an automotive universal joint according to claim 1, characterized in that: A slider (401) is provided at the lower end of the side wall of the core lifting frame (4).

8. A dust cover mold for an automotive universal joint according to claim 1, characterized in that: The lower template (3) includes a second mold cavity (301) and a diversion groove (302). The second mold cavity (301) and the diversion groove (302) are arranged side by side, and the end of the diversion groove (302) communicates with the inside of the second mold cavity (301).

9. A dust cover mold for an automotive universal joint according to claim 1, characterized in that: An insulating plate (5) for isolating heat transfer is provided between the heating plate (6) and the cold runner assembly (1).

10. The automotive universal joint dust cover mold according to claim 1, wherein: An injection pipe (101) communicating with the inside of the connection port (2) is provided on the lower surface of the cold runner assembly (1), and the lower end of the injection pipe (101) communicates with the inside of the first mold cavity (701).

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