Spline core sleeve and powder metallurgy forming die

Abstract

The utility model relates to the technical field of dies, in particular to a spline core sleeve and a powder metallurgy forming die. The powder metallurgy forming die comprises a bottom plate, a lower die body, an upper die body and a cleaning mechanism, the cleaning mechanism comprises a guide rod, a limiting seat, a sliding seat, a switching valve, a movable air pipe, an air gun and a descending device, and after a product is taken out, the air gun is directly held and moves under the cooperation of the sliding seat and the guide rod; and finally, a worker can blow and wash the metal powder adsorbed on the inner wall of the forming cavity through gas sprayed out of an air gun, the metal powder is blown away from the inner cavity of the forming cavity, and then the problems that an existing powder metallurgy forming mold is not provided with an auxiliary cleaning structure, the inner wall of the forming cavity of the mold is inconvenient to clean during machining, and use is inconvenient are solved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a spline core sleeve and a powder metallurgy forming mold. Background Technology

[0002] Existing powder metallurgy forming dies have some defects in use. For example, after the feeding device delivers the powder into the die, the powder inside the die is relatively concentrated. There is no special equipment to distribute it evenly inside the die, which results in low overall forming accuracy due to uneven thickness when applying pressure during powder metallurgy forming.

[0003] The prior art CN213794204U discloses a powder metallurgy forming mold, including a base and a mounting platform. A switch is installed on one side wall of the mounting platform, and a first motor is installed on the top of the mounting platform. The output shaft of the first motor is driven by a transmission belt. The first motor is driven by a cam, which is rotatably connected to the mounting platform through a rotating shaft. This utility model is equipped with a first motor, which drives the reciprocating movement of a moving rod. This facilitates timely spreading of powder in the mold when the feeding device is feeding, preventing uneven powder uniformity in the mold and resulting in low precision during molding. The spring seat ensures accurate return of the moving rod and prevents it from jamming during movement.

[0004] The applicant discovered that after using the mold, a large amount of metal powder would adhere to the inner wall of the mold. If it was not cleaned in time, it would affect the next use. The mold did not have a cleaning auxiliary structure, which made it inconvenient to clean the inner wall of the mold during processing, resulting in inconvenience in use. Utility Model Content

[0005] The purpose of this utility model is to provide a spline core sleeve and a powder metallurgy forming mold, which aims to solve the problem that the existing powder metallurgy forming mold does not have an auxiliary cleaning structure, resulting in inconvenience in cleaning the inner wall of the forming cavity during processing and causing inconvenience in use.

[0006] To achieve the above objectives, this utility model provides a powder metallurgy forming mold, including a base plate, a lower mold body and an upper mold body. The lower mold body is fixed on the base plate and has a forming cavity. The upper mold body is disposed directly above the lower mold body and has a stamping part. It also includes a cleaning mechanism.

[0007] The cleaning mechanism includes a guide rod, a limiting seat, a slide, a transfer valve, a movable air pipe, an air gun, and a downward device. The guide rod is located on the front side of the fixed frame above the base plate. The limiting seat is detachably connected to the four sides of the guide rod and fixed on the fixed frame. The slide can slide horizontally on the guide rod. The transfer valve is fixed on the front side of the slide. Quick-connect air pipes are installed on both sides of the transfer valve. The left quick-connect air pipe is connected to an external compressed air supply pipe, and the right quick-connect air pipe is connected to the movable air pipe. The end of the movable air pipe away from the transfer valve is installed on the quick-connect air pipe on the air inlet at the tail of the air gun. The downward device is located on the side of the fixed frame near the upper mold body.

[0008] The lower mold body is also provided with a cross-shaped positioning hole, which cooperates with a positioning pin, and the positioning pin is provided on the upper mold body.

[0009] The descending device includes an electric telescopic rod and a guide assembly. The electric telescopic rod is installed on the top of the fixed frame, and its output end is threadedly connected to the upper mold body. The guide assembly is located on both sides of the electric telescopic rod.

[0010] The guide assembly includes a T-shaped linear sliding bearing and a mating rod. The T-shaped linear sliding bearing is fixed to the top of the fixed frame and is symmetrically arranged. The mating rod is threaded to the upper mold body and slides with the T-shaped linear sliding bearing. The outer surface of its optical axis end is coated with a wear-resistant coating.

[0011] The powder metallurgy forming mold further includes an adsorption mechanism, which includes a bracket and a magnet. The bracket is fixed on the fixed frame and arranged symmetrically. The magnet is fixed in the mounting cavity of the bracket by countersunk bolts and can adsorb the slide.

[0012] One type of spline core sleeve can be processed using the powder metallurgy forming mold.

[0013] This utility model discloses a powder metallurgy forming mold. The mold is fixed by a base plate. During processing, the metallurgical powder is poured into the forming cavity. Then, the downward device is controlled to move the upper mold body downward to cooperate with the lower mold body, thereby completing the forming process. After forming, the downward device is controlled to move the upper mold body upward to reset, and the product can be removed. After the product is removed, the air gun is held directly and moved with the cooperation of the slide and guide rod. Finally, the operator can use the gas sprayed by the air gun to blow away the metal powder adsorbed on the inner wall of the forming cavity. This solves the problem that existing powder metallurgy forming molds do not have an auxiliary cleaning structure, which makes it inconvenient to clean the inner wall of the forming cavity during processing, causing inconvenience in use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of the powder metallurgy forming mold according to the first embodiment of this utility model.

[0016] Figure 2 This is a schematic diagram of the slide block according to the first embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the overall structure of the powder metallurgy forming mold according to the second embodiment of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the bracket according to the second embodiment of the present invention.

[0019] In the diagram: 101-base plate, 102-lower mold body, 103-upper mold body, 104-forming cavity, 105-stamping part, 106-guide rod, 107-limit seat, 108-slide block, 109-transfer valve, 110-movable air pipe, 111-air gun, 112-fixed frame, 113-electric telescopic rod, 114-T-shaped linear sliding bearing, 115-matching rod, 201-bracket, 202-magnet. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] Example 1:

[0022] like Figure 1 and Figure 2 As shown, where Figure 1 This is a schematic diagram of the overall structure of a powder metallurgy forming die. Figure 2This is a schematic diagram of the slide 108. This utility model provides a powder metallurgy forming mold: including a base plate 101, a lower mold body 102, an upper mold body 103, and a cleaning mechanism. The cleaning mechanism includes a guide rod 106, a limiting seat 107, a slide 108, a transfer valve 109, a movable air pipe 110, an air gun 111, and a descending device. The descending device includes an electric telescopic rod 113 and a guide assembly. The guide assembly includes a T-shaped linear sliding bearing 114 and a mating rod 115. This solution solves the problem that existing powder metallurgy forming molds lack auxiliary cleaning structures, leading to inconvenience in cleaning the inner wall of the mold forming cavity during processing and causing inconvenience in use.

[0023] Understandably, the aforementioned solution facilitates cleaning of the mold during processing.

[0024] In this embodiment, the lower mold body 102 is fixed on the base plate 101 and has a forming cavity 104. The upper mold body 103 is located directly above the lower mold body 102 and has a stamping part 105. The base plate 101 is integrally formed with a door-shaped fixing frame 112. The base plate 101 is fixed with bolts to realize mold installation. The lower mold body 102 is fixed on the base plate 101 with positioning pins and bolts. The forming cavity 104 and the stamping part 105 can be matched and set according to the shape and internal hole structure of the processed product. In addition, the cleaning mechanism in this application can be integrated into the mold, which is conducive to the integrated setting of the mold.

[0025] The guide rod 106 is located on the front side of the fixed frame 112 above the base plate 101. The limiting seat 107 is detachably connected to the four square ends on both sides of the guide rod 106 and fixed on the fixed frame 112. The slide 108 can slide horizontally on the guide rod 106. The adapter valve 109 is fixed on the front side of the slide 108. Quick-connect air hoses are installed on both sides of the adapter valve 109. The left quick-connect air hose is connected to an external compressed air supply hose, and the right quick-connect air hose is connected to the movable air hose 110. The end of the movable air hose 110 away from the adapter valve 109 is installed on the quick-connect air hose on the air inlet at the tail of the air gun 111. The descending device is located on the side of the fixed frame 112 near the upper mold body 103. The guide rod 106 has a U-shaped cross-section, meaning that it has symmetrical rectangular guide protrusions at its top and bottom to facilitate the sliding of the slide block 108. The guide rod 106 has stepped rectangular sections on both sides, which mate with rectangular cavities on the limiting seat 107. The limiting seat 107 is fixed by positioning pins and bolts. The adapter valve 109 is installed on the platform at the front of the slide block 108. The adapter valve 109 has a through-hole inside to facilitate the passage of compressed air, and threaded mounting holes on both sides for easy installation of quick-connect air hoses. The right-side quick-connect fitting of the adapter valve 109 is connected to the movable air pipe 110. The end of the movable air pipe 110 away from the adapter valve 109 is installed on the quick-connect fitting of the air pipe at the air inlet of the air gun 111, thereby enabling air supply. The left-side quick-connect fitting of the adapter valve 109 is connected to an external compressed air supply pipe, and the air pressure is regulated by an external pressure regulating valve. The downward device is used to drive the upper mold body 103 downward to cooperate with the lower mold body 102 to achieve forming.

[0026] Secondly, the lower mold body 102 is also provided with a cross-shaped positioning hole, which cooperates with a positioning pin, and the positioning pin is provided on the upper mold body 103. The positioning hole and positioning pin structure help to improve the stability of the cooperation between the lower mold body 102 and the upper mold body 103.

[0027] Then, the electric telescopic rod 113 is installed on the top of the fixed frame 112, and its output end is threadedly connected to the upper mold body 103; the guide assembly is disposed on both sides of the electric telescopic rod 113. The electric telescopic rod 113 is fixed by bolts, and the external thread end on its output end is directly connected to the connecting threaded hole on the top of the upper mold body 103 for installation. The guide assembly is used to assist the upper mold body 103 in downward movement.

[0028] Finally, the T-shaped linear sliding bearing 114 is fixed to the top of the fixing frame 112 and arranged symmetrically; the mating rod 115 is threadedly connected to the upper mold body 103 and slides with the T-shaped linear sliding bearing 114, and its optical axis end is coated with a wear-resistant coating. The T-shaped linear sliding bearing 114 is fixed by bolts, and the bottom external thread end of the mating rod 115 is installed in the connecting threaded hole of the upper mold body 103. The optical axis end can slide with the T-shaped linear sliding bearing 114, and the outer surface of the optical axis end is coated with a wear-resistant coating, which helps to improve its service life in frequent sliding environments.

[0029] This invention addresses the problem of existing powder metallurgy forming molds lacking auxiliary cleaning structures, leading to inconvenience in cleaning the inner wall of the forming cavity during processing. The mold is fixed by the base plate 101. During processing, metallurgical powder is poured into the forming cavity 104. The downward-moving device is then controlled to move the upper mold body 103 downwards to engage with the lower mold body 102, thus completing the forming process. After forming, the downward-moving device is controlled to move the upper mold body 103 upwards to reset, allowing the product to be removed. After removal, the air gun 111 is held and moved using the sliding block 108 and the guide rod 106. Finally, the worker can use the gas sprayed from the air gun 111 to blow away the metal powder adsorbed on the inner wall of the forming cavity 104, thus solving the problem of existing powder metallurgy forming molds lacking auxiliary cleaning structures, leading to inconvenience in cleaning the inner wall of the forming cavity during processing.

[0030] Example 2:

[0031] like Figure 3 and Figure 4 As shown, where Figure 3 This is a schematic diagram of the overall structure of a powder metallurgy forming die. Figure 4 This is a schematic diagram of the structure of the support 201. Based on the first embodiment, this utility model provides a powder metallurgy forming mold, which further includes an adsorption mechanism, including the support 201 and the magnet 202.

[0032] The bracket 201 is fixed to the fixing frame 112 and arranged symmetrically. The magnet 202 is fixed in the mounting cavity of the bracket 201 by countersunk bolts and can attract the slide 108. The bracket 201 is fixed by positioning pins and bolts. The bracket 201 is provided with a mounting cavity. The magnet 202 is provided with a stepped hole to facilitate fixing with countersunk bolts. The magnet 202 can be attracted and engaged with the rear side plane of the slide 108.

[0033] In this embodiment, by setting the bracket 201 and the magnet 202, after the air gun 111 is used, the slide 108 can be pulled to both sides and stopped by the magnet 202, which helps the movable air tube 110 and the air gun 111 to not interfere with the picking up of parts and the addition of powder.

[0034] Finally, a spline core sleeve can be processed using the powder metallurgy forming mold. During processing, the forming cavity 104 of the lower mold body 102 can be configured to fit the outer dimensions of the spline core sleeve, while the stamping part 105 can be configured according to the inner hole structure of the spline core sleeve, such as a spline structure or a round shaft structure with rectangular protrusions.

[0035] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A powder metallurgy forming die, comprising a base plate, a lower die body, and an upper die body, wherein the lower die body is fixed to the base plate and has a forming cavity, and the upper die body is disposed directly above the lower die body and has a stamping portion, characterized in that: It also includes cleaning services; The cleaning mechanism includes a guide rod, a limiting seat, a slide, a transfer valve, a movable air pipe, an air gun, and a downward device. The guide rod is located on the front side of the fixed frame above the base plate. The limiting seat is detachably connected to the four sides of the guide rod and fixed on the fixed frame. The slide can slide horizontally on the guide rod. The transfer valve is fixed on the front side of the slide. Quick-connect air pipes are installed on both sides of the transfer valve. The left quick-connect air pipe is connected to an external compressed air supply pipe, and the right quick-connect air pipe is connected to the movable air pipe. The end of the movable air pipe away from the transfer valve is installed on the quick-connect air pipe on the air inlet at the tail of the air gun. The downward device is located on the side of the fixed frame near the upper mold body.

2. The powder metallurgy forming mold as described in claim 1, characterized in that: The lower mold body is also provided with a cross-shaped positioning hole, which cooperates with a positioning pin, and the positioning pin is provided on the upper mold body.

3. The powder metallurgy forming mold as described in claim 1, characterized in that: The descending device includes an electric telescopic rod and a guide assembly. The electric telescopic rod is installed on the top of the fixed frame, and its output end is threadedly connected to the upper mold body. The guide assembly is arranged on both sides of the electric telescopic rod.

4. The powder metallurgy forming mold as described in claim 3, characterized in that: The guide assembly includes a T-shaped linear sliding bearing and a mating rod. The T-shaped linear sliding bearing is fixed to the top of the fixed frame and is symmetrically arranged. The mating rod is threaded to the upper mold body and slides with the T-shaped linear sliding bearing. The outer surface of its optical axis end is coated with a wear-resistant coating.

5. The powder metallurgy forming mold as described in claim 1, characterized in that... : The powder metallurgy forming mold also includes an adsorption mechanism, which includes a bracket and a magnet. The bracket is fixed on the fixed frame and arranged symmetrically. The magnet is fixed in the mounting cavity of the bracket by countersunk bolts and can adsorb the slide.

6. A spline core sleeve, characterized in that: It can be processed using the powder metallurgy forming mold as described in any one of claims 1 to 5.

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