CN216858121U

CN216858121U - Cold heading die

Info

Publication number: CN216858121U
Application number: CN202220013883.XU
Authority: CN
Inventors: 刘春峰
Original assignee: Huachu Welding Technology Co ltd
Current assignee: Huachu Welding Technology Co ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-07-01
Anticipated expiration: 2032-01-05

Abstract

The utility model provides a cold heading die, and relates to the technical field of cold heading. The lower-order die comprises an inner core, a cap head forming part and a rod body forming part are sequentially arranged inside the inner core along the forming end to the fixed end of the lower-order die, the cap head forming part is matched with the shape of a cap head of a workpiece to be formed, the rod body forming part is matched with the shape of a rod body of the workpiece to be formed, the upper-order die comprises an extrusion block, the extrusion surface of the extrusion block and the end surface of the forming end of the lower-order die are located in the same plane when the upper-order die and the lower-order die are assembled, the process design of split forming in the prior art is changed through the arrangement of the cap head forming part and the rod body forming part, the workpiece is completely formed by the lower-order die, the concentricity problem of products is guaranteed, the high-efficiency and quick production of qualified workpieces is facilitated, and the lower-order die is particularly suitable for cold heading processing of stainless steel toggle pins.

Description

Cold heading die

Technical Field

The utility model relates to the technical field of cold heading, in particular to a cold heading die.

Background

At present, under the influence of the concept of safety and quality engineering, people put higher requirements on the physical properties of the stud, such as tensile strength, yield strength, elongation and the like. In order to meet the requirements of national major engineering projects, how to efficiently and quickly produce qualified stainless steel toggle pins becomes a primary task.

The applicant finds that at least the following technical problems exist in the prior art: the stainless steel material is soft compared with carbon steel, and the phenomenon of the concentricity of the cap head and the cap body is very easy to occur in the cold heading forming process, so that the finished product rate is low, and the rapid production cannot be realized. The utility model is developed to solve the problem of non-concentricity of the stainless steel stud in the production process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cold heading die to solve the technical problem that a cap head and a rod body are not concentric in the production process of a stainless steel stud in the prior art. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the utility model are described in detail in the following.

In order to realize the purpose, the utility model provides the following technical scheme:

the utility model provides a cold-heading mould, includes lower preface mould and last preface mould, lower preface mould includes the inner core, the inside of inner core is followed the shaping end of lower preface mould has set gradually cap shaping portion and pole body shaping portion to the stiff end, last preface mould is including the extrusion piece, last preface mould with during lower preface mould compound die the extrusion face of extrusion piece with the terminal surface of the shaping end of lower preface mould is located the coplanar.

Preferably, the lower mold further comprises a lower mold jacket, and the lower mold jacket is sleeved outside the inner core.

Preferably, the upper mold further comprises an ejector rod and an upper mold sleeve, and the ejector rod and the extrusion block are sleeved with the upper mold sleeve.

Preferably, the shape of the extrusion block is a cylinder.

Preferably, the upper mold further comprises a limiting part, the upper mold is sleeved outside the upper mold, a fixing groove is formed in the forming end of the upper mold, the limiting part is arranged in the fixing groove, the limiting part is sleeved outside the extrusion block, and the extrusion block can move relative to the limiting part.

Preferably, the limiting member is shaped as a circular ring.

Preferably, the cap head forming part matches the shape of the cap head of the workpiece to be formed.

Preferably, the shaft molding part matches the shape of the shaft of the workpiece to be molded.

The utility model has the beneficial effects that: the cold heading die comprises a lower die and an upper die, the lower die comprises an inner core, a cap head forming part and a rod body forming part are sequentially arranged in the inner core from the forming end to the fixed end of the lower die, wherein the cap head forming part is matched with the shape of a cap head of a workpiece to be formed, the rod body forming part is matched with the shape of a rod body of the workpiece to be formed, the upper die comprises an extrusion block, the extrusion surface of the extrusion block and the end surface of the forming end of the lower die are located in the same plane when the upper die and the lower die are assembled, the process design of split forming in the prior art is changed through the arrangement of the cap head forming part and the rod body forming part, the workpiece is completely formed by the lower die, the concentric problem of the product is guaranteed, the efficient and quick production of qualified workpieces is facilitated, and the cold heading die is particularly suitable for cold processing of stainless steel toggle pins.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional view of the structure of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

FIG. 1 shows a lower mold; 11. an inner core; 111. a cap head forming part; 112. a shaft molding part; 12. a lower die outer sleeve;

2. a mold is arranged in the upper procedure; 21. extruding the block; 22. a top rod; 23. an upper die outer sleeve; 24. and a limiting member.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "lateral," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "side," and the like are used in the indicated orientations and positional relationships based on those shown in fig. 1, merely for convenience of description and to simplify the description, and are not intended to indicate or imply that the referenced apparatus or component must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

Example one

Referring to fig. 1 to 2, the present embodiment provides a cold heading die, which includes a lower die 1 and an upper die 2, the lower die 1 includes an inner core 11, one end of the lower die 1, which is matched with the upper die 2, is a forming end, the other end of the lower die 1 is fixed to a cold heading machine, which is a fixed end, a cap forming portion 111 and a shaft forming portion 112 are sequentially disposed inside the inner core 11 from the forming end to the fixed end of the lower die 1, wherein the cap forming portion 111 matches with the shape of the cap of the workpiece to be formed, the shaft forming portion 112 matches with the shape of the shaft of the workpiece to be formed, the upper die 2 includes an extrusion block 21, the extrusion surface of the extrusion block 21 and the end surface of the forming end of the lower die 1 are located in the same plane when the upper die 2 and the lower die 1 are matched, and the process design of the prior art split forming is changed by the arrangement of the cap forming portion 111 and the shaft forming portion 112, the workpiece is completely molded by the lower die 1, so that the concentricity of the product is guaranteed, the qualified workpiece can be efficiently and quickly produced, and the cold heading machine is particularly suitable for cold heading of stainless steel stud nails.

Example two

As an optional embodiment, the lower die 1 further includes a lower die outer sleeve 12, the lower die outer sleeve 12 is sleeved outside the inner core 11, the lower die outer sleeve 12 fixes and positions the fixed inner core 11, and meanwhile, the lower die 1 is connected with the cold header through the lower die outer sleeve 12, and the lower die outer sleeve 12 fixes the whole lower die 1.

EXAMPLE III

Referring to fig. 1 to 2, the present embodiment provides a cold heading die, which includes a lower die 1 and an upper die 2, the lower die 1 includes an inner core 11, one end of the lower die 1, which is matched with the upper die 2, is a forming end, the other end of the lower die 1 is fixed to a cold heading machine, which is a fixed end, a cap forming portion 111 and a shaft forming portion 112 are sequentially disposed inside the inner core 11 from the forming end to the fixed end of the lower die 1, wherein the cap forming portion 111 matches with the shape of the cap of the workpiece to be formed, the shaft forming portion 112 matches with the shape of the shaft of the workpiece to be formed, the upper die 2 includes an extrusion block 21, the extrusion surface of the extrusion block 21 and the end surface of the forming end of the lower die 1 are located in the same plane when the upper die 2 and the lower die 1 are matched, and the process design of the prior art split forming is changed by the arrangement of the cap forming portion 111 and the shaft forming portion 112, the workpiece is completely formed by the lower die 1, so that the concentricity of the product is guaranteed, the qualified workpiece can be efficiently and quickly produced, and the cold heading die is particularly suitable for cold heading processing of stainless steel toggle pins.

As an optional embodiment, the upper-sequence mold 2 further comprises an ejector rod 22 and an upper mold jacket 23, the upper mold jacket 23 is sleeved outside the ejector rod 22 and the extrusion block 21, when the upper-sequence mold 2 and the lower-sequence mold 1 are closed, the ejector rod 22 can simultaneously apply extrusion force to the extrusion block 21, so that the extrusion block 21 operates, the shape of the extrusion block 21 is preferably a cylinder, the cylinder has a smoother structural appearance, the movement is easier, and the circular cross section is more uniformly stressed, thereby facilitating the forming effect of the workpiece.

Example four

As an optional implementation manner, the upper mold 2 further includes a limiting member 24, the upper mold jacket 23 has a fixing groove at a forming end of the upper mold 2, the limiting member 24 is disposed in the fixing groove, the limiting member 24 is sleeved outside the extrusion block 21, and the extrusion block 21 can move relative to the limiting member 24, the limiting member 24 can limit a moving path of the extrusion block 21 in the upper mold jacket 23, so that the extrusion effect is more accurate, and the deviation is avoided.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The cold heading die is characterized by comprising a lower die (1) and an upper die (2), wherein: lower preface mould (1) includes inner core (11), the inside of inner core (11) is followed the shaping end to the stiff end of lower preface mould (1) has set gradually cap head shaping portion (111) and pole body shaping portion (112), it includes extrusion piece (21) to go up preface mould (2), go up preface mould (2) with during lower preface mould (1) compound die the plane of extrusion piece (21) with the terminal surface of the shaping end of lower preface mould (1) is located the coplanar.

2. The cold-heading die of claim 1, wherein: the lower-order die (1) further comprises a lower die outer sleeve (12), and the inner core (11) is sleeved with the lower die outer sleeve (12).

3. The cold-heading die of claim 1, wherein: go up preface mould (2) and still include ejector pin (22) and go up mould overcoat (23), it establishes to go up mould overcoat (23) ejector pin (22) with the outside of extrusion piece (21).

4. The cold-heading die of claim 1, wherein: the extrusion block (21) is cylindrical in shape.

5. The cold-heading die of claim 3, wherein: go up preface mould (2) and still include locating part (24), go up mould overcoat (23) and be in the fixed slot has been seted up to the shaping end of preface mould (2), locating part (24) set up in the fixed slot, locating part (24) cover is established the outside of extrusion piece (21) and extrusion piece (21) can be relative locating part (24) remove.

6. The cold-heading die of claim 5, wherein: the limiting piece (24) is in the shape of a circular ring body.

7. The cold-heading die of claim 1, wherein: the cap head forming part (111) is matched with the shape of a cap head of a workpiece to be formed.

8. The cold-heading die of claim 1, wherein: the shaft forming part (112) is matched with the shape of the shaft of the workpiece to be formed.