Vacuum nitriding high-temperature-resistant thimble sleeve structure

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to a vacuum nitriding high-temperature-resistant ejector pin sleeve structure which comprises a demolding box, fixing blocks are fixedly connected to the two sides of an inner cavity of the demolding box, and ejector pin sleeve bodies are fixedly connected to the opposite sides of the two fixing blocks. A plurality of ejector pin bodies are slidably connected into the ejector pin sleeve body, a push plate is fixedly connected to the ends, away from the ejector pin sleeve body, of the ejector pin bodies, an air pump is fixedly connected to one side of the demolding box, a piston rod of the air pump is fixedly connected to one side of the push plate, and a grinding tool plate is fixedly connected to an inner cavity of the demolding box. One end of the ejector pin sleeve body is attached to one side of the grinding tool plate, and a spraying assembly is arranged on the ejector pin sleeve body. The mold ejector pin can reduce the friction coefficient between the ejector pin and the ejector pin sleeve, reduce abrasion, improve the working efficiency and prolong the service life.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection mold technical field, concretely relates to a vacuum nitriding high temperature resistant thimble sleeve structure. BACKGROUND

[0002] The thimble sleeve is usually sleeved on the outside of the thimble and plays a role of protecting and supporting the thimble. During the mold manufacturing and mechanical processing, the thimble can be subjected to a large pressure and friction force, and the sleeve can reduce the direct influence of these forces on the thimble, thereby prolonging the service life of the thimble.

[0003] On the current market, the inner wall of the sleeve is generally subjected to fine processing, and the design purpose is to ensure that a proper fitting gap can be maintained between the sleeve and the thimble. Such precise fitting not only helps the thimble to move smoothly and smoothly inside the sleeve, but also effectively reduces the heat generated due to friction. However, as the use time of the thimble increases, a certain degree of wear will inevitably occur inside the sleeve, which will cause the originally moderate fitting gap to gradually increase. Once this situation occurs, the movement accuracy of the thimble will be affected, thereby affecting its service life. SUMMARY

[0004] The utility model discloses a vacuum nitriding high temperature resistant thimble sleeve structure, which can reduce the friction coefficient between the thimble and the thimble sleeve, reduce wear, and improve the working efficiency and service life of the mold thimble.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A vacuum nitriding high temperature resistant thimble sleeve structure, comprising a demolding box, two fixed blocks are fixedly connected on both sides of the inner cavity of the demolding box, a thimble sleeve body is fixedly connected on the opposite side of the two fixed blocks, a plurality of thimble bodies are slidably connected in the thimble sleeve body, a push plate is fixedly connected to the end of the plurality of thimble bodies away from the thimble sleeve body, a gas pump is fixedly connected to one side of the demolding box, the piston rod of the gas pump is fixedly connected to one side of the push plate, a grinding plate is fixedly connected in the inner cavity of the demolding box, one end of the thimble sleeve body is attached to one side of the grinding plate, and a spraying assembly is arranged on the thimble sleeve body.

[0007] Preferably, the spraying assembly comprises a plurality of annular tubes fixedly connected to one side of the thimble sleeve body, a plurality of liquid spraying grooves are formed in the inner side of each annular tube, a conveying pipe is communicated between the plurality of annular tubes, a water pump is fixedly connected to one side of the demolding box, a liquid storage tank is communicated with the liquid inlet end of the water pump, and the liquid outlet end of the water pump is communicated with the conveying pipe.

[0008] Preferably, the two ends of the push plate close to the side of the thimble body are fixedly connected with U-shaped blocks, one side of the thimble body is fixedly connected with a square block matched with the U-shaped blocks, and the side close to each other of the U-shaped blocks and the square block is fixedly connected with springs.

[0009] Preferably, the bottom of the inner cavity of the demolding box and located at the bottom of the circular pipe is fixedly connected with a liquid receiving groove, one side of the liquid receiving groove is communicated with a liquid discharge pipe, and one end of the liquid discharge pipe extends to the outside of the demolding box.

[0010] Preferably, each of the circular pipes is in a circular ring structure, and the inner diameter value of the circular pipe is greater than the outer diameter value of the thimble body.

[0011] Preferably, the end of the thimble body away from the circular pipe is fixedly connected with a plurality of circular sponge blocks, and the top of the liquid storage tank is fixedly connected with a liquid inlet pipe.

[0012] The technical effects achieved by the utility model are as follows:

[0013] The utility model relates to a kind of vacuum nitriding high-temperature-resistant thimble sleeve structures, by setting up spraying assembly, utilize water pump to convey the lubricating liquid in liquid storage tank to circular pipe by delivery pipe, and the lubricating liquid is evenly sprayed on the surface of thimble body by liquid spraying groove, the device can reduce the friction coefficient between thimble and thimble sleeve, reduce abrasion, improve the working efficiency and service life of mould thimble simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the front view structural schematic diagram of the utility model;

[0015] Figure 2 It is the top structure plan view of the utility model;

[0016] Figure 3 It is the structure perspective view of the spraying assembly of the utility model.

[0017] In the drawings, the component list represented by each sign is as follows:

[0018] 1, demolding box;2, fixed block;3, thimble body;4, thimble body;5, push plate;6, air pump;7, mould plate;8, circular pipe;9, liquid spraying groove;10, delivery pipe;11, water pump;12, liquid storage tank;13, U-shaped block;14, square block;15, spring;16, liquid receiving groove;17, liquid discharge pipe;18, circular sponge block;19, liquid inlet pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the utility model more clearly, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model and does not strictly limit the protection scope of the utility model specifically requested.

[0020] As shown in Figure 1 - Figure 3 A kind of vacuum nitriding high-temperature-resistant thimble structure, including stripping box 1, the two sides of the inner cavity of stripping box 1 are fixedly connected with fixed block 2, the opposite side of two fixed blocks 2 is fixedly connected with thimble body 3, thimble body 3 is slidably connected with multiple thimble bodies 4, the end of multiple thimble bodies 4 away from thimble body 3 is fixedly connected with push plate 5, the side of stripping box 1 is fixedly connected with air pump 6, the piston rod of air pump 6 is fixedly connected on the side of push plate 5, the inner cavity of stripping box 1 is fixedly connected with grinding plate 7, one end of thimble body 3 is attached to the side of grinding plate 7, and spraying assembly is arranged on thimble body 3.

[0021] Among them, drive air pump 6 drives push plate 5 to drive thimble body 4 to slide in thimble body 3, and then thimble body 4 is inserted into grinding plate 7 to strip the glue in grinding plate 7, and in the stripping process, the inner cavity of thimble body 3 is treated specially, has good high-temperature resistance and wear resistance, can adapt to long time use and high temperature environment, after stripping is completed in mold plate 7, push plate 5 can quickly retreat to the initial position, and the next stripping operation is prepared.

[0022] As shown in Figure 1 and Figure 3 Spraying assembly includes multiple annular pipes 8 fixedly connected on the side of thimble body 3, multiple liquid spraying grooves 9 are formed in the inner side of each annular pipe 8, multiple annular pipes 8 are communicated with conveying pipe 10, water pump 11 is fixedly connected on the side of stripping box 1, liquid inlet end of water pump 11 is communicated with liquid storage tank 12, and liquid outlet end of water pump 11 is communicated on conveying pipe 10.

[0023] Specifically, water pump 11 is used to convey lubricating liquid in liquid storage tank 12 into annular pipe 8 through conveying pipe 10, and the surface of thimble body 4 is uniformly sprayed through liquid spraying groove 9; the accurate spraying of lubricating liquid effectively reduces the waste of lubricating oil, and also ensures that thimble body 4 and push plate 5 can continuously operate, so as to improve the operation efficiency of the whole equipment.

[0024] As shown in Figure 2 Push plate 5 is fixedly connected with U-shaped block 13 at both ends of the side close to thimble body 4, square block 14 used in cooperation with U-shaped block 13 is fixedly connected on the side of thimble body 3, and spring 15 is fixedly connected on the side close to each other of U-shaped block 13 and square block 14.

[0025] The design of the U-shaped block 13 and the square block 14 is used for precise butt joint between the push plate 5 and the ejector sleeve body 3, so that deviation caused by the use of the ejector body 4 is avoided; the design of the spring 15 is used for buffering when the push plate 5 and the ejector sleeve body 3 are extruded, so that wear between the push plate 5 and the ejector sleeve body 3 is avoided.

[0026] As shown in Figure 2 The bottom of the inner cavity of the stripping box 1 and located at the bottom of the circular ring pipe 8 is fixedly connected with a liquid receiving groove 16, one side of the liquid receiving groove 16 is communicated with a liquid discharge pipe 17, and one end of the liquid discharge pipe 17 extends to the outside of the stripping box 1.

[0027] Specifically, the liquid receiving groove 16 is used for collecting the lubricating oil dripping down in the circular ring pipe 8, and the lubricating oil is discharged outside through the liquid discharge pipe 17, which helps to keep the equipment clean and lubricated, and also ensures the recycling of the lubricating oil.

[0028] As shown in Figure 3 Each circular ring pipe 8 is in a circular ring structure, and the inner diameter value of the circular ring pipe 8 is greater than the outer diameter value of the ejector body 4.

[0029] The design of the circular ring structure is used for the liquid spraying groove 9 in the circular ring pipe 8 to uniformly spray the lubricating liquid on the surface of the ejector body 4, and the design that the inner diameter value of the circular ring pipe 8 is greater than the outer diameter value of the ejector body 4 makes the lubricating liquid sufficiently dispersed in the circular ring pipe 8, so that the lubricating liquid is uniformly sprayed on the surface of the ejector body 4.

[0030] As shown in Figure 1 and Figure 3 The end of the ejector sleeve body 3 away from the circular ring pipe 8 is fixedly connected with a plurality of circular ring sponge blocks 18, and the top of the liquid storage tank 12 is fixedly connected with a liquid inlet pipe 19.

[0031] Specifically, the design of the circular ring sponge block 18 is used for wiping the lubricating liquid on the surface of the ejector body 4 to prevent the lubricating liquid from being stained on the rubber film during the demolding process of the ejector body 4, and the design of the liquid inlet pipe 19 is used for injecting the lubricating liquid into the liquid storage tank 12.

[0032] The working principle of the utility model is as follows: first, the lubricating liquid is injected into the liquid inlet pipe 19, the water pump 11 is driven to convey the lubricating liquid in the liquid storage tank 12 to the circular ring pipe 8 through the conveying pipe 10, and the surface of the ejector body 4 is sprayed by the liquid spraying groove 9; then, the air pump 6 is started to push the push plate 5 to move the ejector body 4 into the ejector sleeve body 3 to demold the inside of the grinding tool plate 7; finally, the operation of the air pump 6 is stopped, and the push plate 5 is reset and the ejector body 4 is pulled back by the rebound force of the spring 15.

[0033] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application. Structures, devices and operation methods not specifically described and explained in the present application are implemented according to conventional means in the art, unless otherwise specified and limited.

Claims

1. A vacuum nitrided high temperature resistant thimble structure, characterized by: The utility model provides a mould stripping box, including the mould stripping box (1), the two sides fixed connection of the inner chamber of mould stripping box (1) have fixed block (2), two fixed block (2) opposite side fixed connection have thimble body (3), thimble body (3) in sliding connection have a plurality of thimble body (4), a plurality of thimble body (4) away from thimble body (3) one end fixed connection have push plate (5), the one side fixed connection of mould stripping box (1) have air pump (6), air pump (6) piston rod fixed connection in push plate (5) one side, the inner chamber fixed connection of mould stripping box (1) have grinding plate (7), thimble body (3) one end adhere in grinding plate (7) one side, be provided with spraying assembly on thimble body (3).

2. The vacuum nitrided high temperature resistant thimble structure according to claim 1, wherein: The spraying assembly includes a plurality of circular tubes (8) fixedly connected to one side of the thimble body (3), each of the circular tubes (8) has a plurality of liquid injection grooves (9) formed on the inner side, a plurality of the circular tubes (8) are communicated with a delivery pipe (10), one side of the mould stripping box (1) is fixedly connected with a water pump (11), the water pump (11) has a liquid storage tank (12) communicated with the liquid inlet end, and the liquid outlet end of the water pump (11) is communicated with the delivery pipe (10).

3. The vacuum nitrided high temperature resistant thimble structure according to claim 1, wherein: The push plate (5) is fixedly connected with a U-shaped block (13) at both ends of the side close to the thimble body (4), the thimble body (3) is fixedly connected with a square block (14) used in cooperation with the U-shaped block (13) on one side, and the U-shaped block (13) and the square block (14) are fixedly connected with springs (15) on the sides close to each other.

4. The vacuum nitrided high temperature resistant thimble structure of claim 2, wherein: The bottom of the inner chamber of the mould stripping box (1) and the bottom of the circular tube (8) are fixedly connected with a liquid receiving groove (16), and the liquid receiving groove (16) is communicated with a liquid discharge pipe (17) on one side, and one end of the liquid discharge pipe (17) extends to the outside of the mould stripping box (1).

5. The vacuum nitrided high temperature resistant thimble structure of claim 2, wherein: Each of the circular tubes (8) has a circular ring structure, and the inner diameter of the circular tube (8) is greater than the outer diameter of the thimble body (4).

6. The vacuum nitrided high temperature resistant thimble structure of claim 2, wherein: The thimble body (3) is fixedly connected with a plurality of circular sponge blocks (18) at the end away from the circular tube (8), and the top of the liquid storage tank (12) is fixedly connected with a liquid inlet pipe (19).

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