A plug type push rod assembly

By setting up a sleeve and a gasket in the down-pressure rod assembly processed by powder metallurgy, the 360-degree rotation of the plug head is solved, and the wear problem caused by excessive pressure on the fixed position of the down-pressure rod plug head is ensured, ensuring molding quality and reduction cost.

CN111168060BActive Publication Date: 2024-12-10BO LUO HE SHI MOLD MFG CO
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Patent Information

Application Number
CN202010124702.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-02-27
Publication Date
2024-12-10
Estimated Expiration
2040-02-27

AI Technical Summary

Technical Problem

In existing powder metallurgy processing, the plug head of the lower pressure rod is fixedly connected by a screw, which is prone to wear and damage caused by huge pressure, affecting the blank forming quality and equipment service life.

Method used

Design a plug-in type down-press rod assembly, by setting a sleeve and a gasket between the plug-in and the down-press rod body, the 360-degree rotation of the plug-in is achieved, avoiding excessive pressure at the fixed position, and in the lower seat and Set a washer between the positioning nuts to ensure that the molding surface is flat.

Benefits of technology

It extends the service life of the plug head, ensures the quality of powder forming, reduces manufacturing costs, and avoids pressing surface unevenness and equipment wear.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to the technical field of powder metallurgy processing parts, and in particular to a plug-type pressure rod assembly, which comprises a plug connected in sequence, a pressure rod body provided with a core rod installation groove, and a lower mold; the plug is movably arranged in a positioning groove at one end of the pressure rod body through a screw rod, a shaft sleeve is sleeved on the screw rod, and a gasket is arranged between the plug insertion end and the bottom of the positioning groove; the lower mold is fixedly connected to the other end of the pressure rod body through a positioning nut, the lower mold comprises a base and a lower punch fixedly arranged on the base, a lower mold seat and a gasket are also arranged in the positioning nut, the lower mold seat is located between the base and the pressure rod body, the gasket is arranged on the base and located between the lower mold seat and the positioning nut, it not only has a simple structure and reasonable design, but also has a long service life, ensures the quality of powder molding, and reduces manufacturing costs.
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Description

Technical Field

[0001] The invention relates to the technical field of powder metallurgy processing parts, in particular to a plug type push rod assembly. Background Art

[0002] The existing powder metallurgy mostly uses a rotary powder forming machine to press and form metal powder. The principle is to set multiple workstations on a rotating middle plate, and the workstations include a mother mold, an upper mold and a lower mold that are correspondingly arranged above and below and can be inserted into the mother mold. The upper mold and the lower mold are respectively connected with an upper pressing rod and a lower pressing rod. When the workstation is transferred to the upper pressing wheel and the lower pressing wheel, the upper pressing rod and the lower pressing rod press the upper mold and the lower mold into the mother mold under the joint pressure of the upper pressing wheel and the lower pressing wheel, so that the powder in the mother mold is pressed into a blank under great pressure, and the plug of the existing lower pressing rod is fixedly connected to the lower pressing rod body by a screw. When the finished product is pressed, it is necessary to press or eject the blank through the lower pressing rod by great pressure. In this case, the lower pressing rod and the slide rail are easily worn and damaged, thereby affecting the quality of the blank molding, and causing the cost to increase, which greatly affects the service life of the equipment. Summary of the invention

[0003] In order to overcome the above technical defects, the purpose of the present invention is to provide a plug-type push rod assembly, which is not only simple in structure and reasonable in design, but also has a long service life, can ensure the quality of powder molding, and reduce manufacturing costs.

[0004] To achieve the above object, the present invention is implemented through the following technical solutions:

[0005] A plug type push rod assembly, comprising a plug, a push rod body provided with a core rod installation groove and a lower mold which are connected in sequence;

[0006] The plug is movably arranged in a positioning groove at one end of the pressing rod body via a screw rod, a shaft sleeve is sleeved on the screw rod, and a gasket is arranged between the plug insertion end and the bottom of the positioning groove;

[0007] The lower die is fixedly connected to the other end of the pressing rod body via a positioning nut. The lower die includes a base and a lower punch fixed on the base. A lower die seat and a gasket are also provided in the positioning nut. The lower die seat is located between the base and the pressing rod body. The gasket is provided on the base and between the lower die seat and the positioning nut.

[0008] Furthermore, the plug is provided with a through hole through which the screw rod passes, and the shaft sleeve is arranged in the through hole.

[0009] Furthermore, the sleeve is 0.1-0.4 mm higher than the screw.

[0010] Furthermore, the thickness of the gasket is 10-15 mm.

[0011] Furthermore, the thickness of the gasket is 10-15 mm.

[0012] In summary, the advantages of the present invention are:

[0013] The structure has a sleeve between the screw and the plug, which ensures that the plug can be movably connected to the pressing rod through the screw, thereby ensuring that the plug will not be damaged due to excessive pressure on a fixed position on the plug when the blank is pressed or ejected. It can rotate 360 ​​degrees, so that the force points act on different positions on the plug, making the force even, thereby ensuring its service life.

[0014] In addition, a gasket is provided between the plug insertion end and the bottom of the positioning groove, and a washer is provided between the lower mold seat and the positioning nut. The function of the gasket and the washer is to ensure that the pressed surface of the product will not be uneven during pressing, thereby affecting its molding quality.

[0015] In summary, it not only has a simple structure and reasonable design, but also has a long service life, can ensure the quality of powder molding, and reduce manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 yes Figure 1 Schematic diagram of the cross section along line AA;

[0018] Figure 3 It is a schematic diagram of the structure of the plug in the present invention;

[0019] Figure 4 It is a structural schematic diagram of the pressing rod body in the present invention;

[0020] Figure 5 It is a schematic structural diagram of the middle and lower type of the present invention;

[0021] Figure 6 It is a structural schematic diagram of the shaft sleeve in the present invention;

[0022] Figure 7 It is a structural schematic diagram of the gasket in the present invention;

[0023] Figure 8 It is a structural schematic diagram of the lower mold seat in the present invention;

[0024] Fig. 9 It is a structural schematic diagram of the gasket in the present invention.

[0025] 1. Plug, 2. Press rod, 201. Positioning groove, 202. Mounting groove, 3. Lower die, 301. Base, 302. Lower punch, 4. Positioning nut, 5. Screw, 6. Bushing, 7. Gasket, 8. Lower die seat, 9. Washer. DETAILED DESCRIPTION

[0026] The invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, a plug type pressing rod assembly comprises a plug 1, a pressing rod body 2 provided with a core rod installation groove 202 and a lower mold 3 which are connected in sequence;

[0028] The plug 1 is movably arranged in the positioning groove 201 at one end of the pressing rod 2 via a screw 5, a sleeve 6 is sleeved on the screw 5, and a gasket 7 is arranged between the inserted end of the plug 1 and the bottom of the positioning groove 201;

[0029] The lower die 3 is fixedly connected to the other end of the pressing rod body 2 via a positioning nut 4. The lower die 3 includes a base 301 and a lower punch 302 fixed on the base 301. A lower die seat 8 and a washer 9 are also provided in the positioning nut 4. The lower die seat 8 is located between the base 301 and the pressing rod body 2. The washer 9 is provided on the base 301 and between the lower die seat 8 and the positioning nut 4.

[0030] The plug head 1 is provided with a through hole 101 through which the screw rod 5 passes, and the shaft sleeve 6 is arranged in the through hole 101 .

[0031] The shaft sleeve 6 is higher than the screw rod 5 by 0.1-0.4 mm.

[0032] Wherein, the thickness of the gasket 7 is 10-15 mm.

[0033] Wherein, the thickness of the gasket 9 is 10-15 mm.

[0034] The structure is provided with a sleeve 6 between the screw 5 and the plug 1, ensuring that the plug 1 can be movably connected to the pressing rod 2 via the screw 5, thereby ensuring that the plug 1 will not be damaged due to excessive pressure on a fixed position on the plug 1 when the blank is pressed or ejected. It can rotate 360 ​​degrees, so that the force points act on different positions on the plug 1, making the force even, thereby ensuring its service life.

[0035] In addition, a gasket 7 is provided between the insertion end of the plug 1 and the bottom of the positioning groove 201, and a washer 9 is provided between the lower mold seat 8 and the positioning nut 4. The function of the gasket 7 and the washer 9 is to ensure that the pressing surface of the product will not be uneven during pressing, thereby affecting its molding quality.

[0036] In summary, it not only has a simple structure and reasonable design, but also has a long service life, can ensure the quality of powder molding, and reduce manufacturing costs.

[0037] For those skilled in the art, various other corresponding changes and modifications can be made according to the above technical solutions and concepts, and all of these changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A plug-type push rod assembly, comprising a plug (1), a push rod body (2) and a lower mold (3) connected in sequence, wherein the push rod body (2) is provided with a mounting groove (202) for mounting a core rod, Features: The plug (1) is rotatably disposed in a positioning groove (201) at one end of the pressing rod (2) via a screw (5) and can rotate 360 ​​degrees. A shaft sleeve (6) is sleeved on the screw (5). A gasket (7) is disposed between the insertion end of the plug (1) and the bottom of the positioning groove (201). The lower die (3) is fixedly connected to the other end of the pressing rod (2) via a positioning nut (4), the lower die (3) comprises a base (301) and a lower punch (302) fixedly arranged on the base (301), a lower die seat (8) and a washer (9) are also arranged in the positioning nut (4), the lower die seat (8) is located between the base (301) and the pressing rod (2), and the washer (9) is arranged on the base (301) and between the lower die seat (8) and the positioning nut (4); The thickness of the gasket (7) and the gasket (9) are both 10-15 mm.

2. A plug type push rod assembly according to claim 1, Features: The plug (1) is provided with a through hole (101) through which the screw rod (5) passes, and the shaft sleeve (6) is arranged in the through hole (101).