CN218693208U

CN218693208U - Straight-tooth press-fitting bolt production device with double chamfers

Info

Publication number: CN218693208U
Application number: CN202223172531.8U
Authority: CN
Inventors: 李志刚; 向晓兵; 胡春生; 成红科; 尤建波
Original assignee: Handan Qunxing Hardware Products Co ltd
Current assignee: Handan Qunxing Hardware Products Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-03-24
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a straight-tooth press-fitting bolt production device with double chamfers, which comprises a fixed die and a movable die, wherein the fixed die is provided with a fixed die core, and the fixed die core is provided with a forming cavity for punch forming the double chamfers on the bolt; a moving mold core for performing punch forming on the nut cap of the bolt is arranged on the moving mold; a first cooling cavity channel is arranged inside the fixed mold core, a second cooling cavity channel is arranged on the movable mold core, and a cooling water inlet pipe and a cooling water outlet pipe are arranged on the first cooling cavity channel and the second cooling cavity channel; the utility model discloses a let in the circulating water to cover half core and movable mould core and cool down to avoided stamping die's temperature to rise gradually, can make the mechanical properties of self change, influenced the precision of mould, and lead to the emergence of mould damage phenomenon.

Description

Straight-tooth press-fitting bolt production device with double chamfers

Technical Field

The utility model relates to a bolt production technical field specifically is a straight-tooth pressure equipment bolt apparatus for producing of two chamfers.

Background

At present, during the assembly process of automobiles, the connection between different parts is usually realized by fasteners, and bolts are one of the most common mechanical parts. The bolt is a cylindrical threaded fastener matched with a nut; the bolt is matched with a nut to be used for tightly connecting two parts with through holes, and the device for producing the double-chamfer straight-tooth press-fitting bolt is a device for producing the double-chamfer bolt, which is disclosed in a patent with the patent number of CN202120143333.5 granted by China. The first chamfer of the produced bolt can be pre-guided into the unthreaded hole of the counterpart piece in the bolt press-fitting process to play a good guiding role, so that the bolt is prevented from being inclined and the guiding function is played; the second chamfer is a longer small-taper chamfer, so that the straight tooth part of the bolt can be slowly pressed into the counterpart in the press fitting process, the resistance in the press fitting process is reduced, the problem that the straight tooth is shaved off is solved, and the problem that iron powder falls off due to overlarge press fitting resistance is solved; but what its utilized is that stamping die carries out the two chamfers of punching press formation, stamping die can constantly take place the friction with the material, thereby lead to stamping die's temperature to rise gradually, stamping die is behind the temperature rise, can make the mechanical properties of self change, the precision of mould has been influenced, still lead to the mould to damage easily simultaneously, and chinese granted patent and patent number are CN202120143333.5, a cooling device cools off stamping die not designed in the straight-tooth pressure equipment bolt apparatus for producing of two chamfers, the cooling method to stamping die is mostly through natural cooling, this kind of cooling method efficiency is lower.

SUMMERY OF THE UTILITY MODEL

For solving prior art's stamping die can constantly take place the friction with the material to lead to stamping die's temperature to rise gradually, stamping die can make the mechanical properties of self change after the temperature risees, has influenced the precision of mould, still leads to the mould to damage simultaneously easily, the utility model provides a straight-tooth pressure equipment bolt apparatus for producing of two chamfers.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a straight-tooth press fitting bolt production device with double chamfers, which comprises a fixed die and a movable die, wherein the fixed die is provided with a fixed die core, and the fixed die core is provided with a forming cavity for punch forming the double chamfers on the bolt; a moving mold core for performing punch forming on the nut cap of the bolt is arranged on the moving mold; the inside of deciding the mold core is equipped with first cooling chamber way, just be equipped with second cooling chamber way on the movable mould core, just all be equipped with on first cooling chamber way, the second cooling chamber way and use cooling water inlet tube and cooling water outlet pipe.

As a preferred technical scheme of the utility model, the bottom of cover half is equipped with the ejecting ejection mechanism of bolt with the shaping intracavity.

As a preferred technical scheme of the utility model, ejection mechanism including set up in the cover half bottom and with the through-hole of shaping chamber bottom intercommunication, the top of cover half is fixed with ejecting cylinder through the mount, just ejecting cylinder's flexible end is equipped with the knockout pin that removes along the through-hole.

As an optimized technical scheme of the utility model, the top of ejector rod is equipped with ejecting piece.

As a preferred technical scheme of the utility model, cover half, movable mould are equipped with the installation cavity that is used for installing cover half core and movable mould core, just cover half core and movable mould core are through bolt fastening at cover half, movable mould.

The utility model has the advantages that:

this kind of straight-tooth pressure equipment bolt apparatus for producing of two chamfers is equipped with first cooling chamber through the inside at the cover half core and is said and be equipped with second cooling chamber on the movable mould core, and is cooled down through letting in the circulating water to cover half core and movable mould core to avoided stamping die's temperature to rise gradually, can make the mechanical properties of self change, influenced the precision of mould, and lead to the emergence of mould damage phenomenon.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of a double-chamfer straight-tooth press-fitting bolt production device of the present invention;

fig. 2 is a schematic diagram of the top ring structure of the straight-tooth press-fitting bolt production device with double chamfers of the utility model.

In the figure: 1. fixing a mold; 2. moving the mold; 3. fixing a mold core; 4. a molding cavity; 5. a movable mold core; 6. a first cooling channel; 7. a second cooling channel; 8. a cooling water inlet pipe; 9. a cooling water outlet pipe; 10. an ejection mechanism; 11. a through hole; 12. a fixed mount; 13. ejecting out a cylinder; 14. ejecting the rod; 15. ejecting a block; 17. and (7) installing a cavity.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1 and 2, the device for producing a double-chamfer straight-tooth press-fitting bolt of the present invention comprises a fixed mold 1 and a movable mold 2, wherein the fixed mold 1 is provided with a fixed mold core 3, and the fixed mold core 3 is provided with a molding cavity 4 for performing punch molding on the double chamfers on the bolt; a moving mold core 5 for performing punch forming on the nut cap of the bolt is arranged on the moving mold 2; the inside of deciding mold core 3 is equipped with first cooling chamber way 6, just be equipped with second cooling chamber way 7 on the movable mould core 5, just all be equipped with on first cooling chamber way 6, the second cooling chamber way 7 with cooling water inlet tube 8 and cooling water outlet pipe 9. Through being equipped with first cooling chamber through the inside at cover half 1 core and say 6 and be equipped with second cooling chamber on movable mould 2 cores and say 7, cool down through letting in the circulating water to cover half 1 core and movable mould 2 cores to avoid stamping die's temperature to rise gradually, can make the mechanical properties of self change, influenced the precision of mould, and lead to the emergence of mould damage phenomenon.

Wherein, the bottom of the fixed die 1 is provided with an ejection mechanism 10 for ejecting out the bolt in the molding cavity 4. The ejection mechanism 10 comprises a through hole 11 which is formed in the bottom of the fixed die 1 and communicated with the bottom of the molding cavity 4, an ejection cylinder 13 is fixed to the top of the fixed die 1 through a fixed frame 12, and an ejection rod 14 which moves along the through hole 11 is arranged at the telescopic end of the ejection cylinder 13. Wherein, the top of the ejector rod 14 is provided with an ejector block 15. The bolt in the molding cavity is conveniently ejected out, so that the bolt is convenient to take.

Wherein, cover half 1, movable mould 2 are equipped with the installation cavity that is used for installing cover half core 3 and movable mould core 5, just cover half core 3 and movable mould core 5 are through the bolt fastening at cover half 1, movable mould 2, have the characteristics of being convenient for install and dismantling, conveniently change different cover half core 3 and movable mould core 5 when punching press the bolt of different specifications simultaneously.

During operation, through being equipped with first cooling chamber way 6 in the inside of cover half 1 core and being equipped with second cooling chamber way 7 on movable mould 2 cores, cool down through letting in the circulating water to cover half 1 core and movable mould 2 cores to avoided stamping die's temperature to rise gradually, can make the mechanical properties of self change, influenced the precision of mould, and lead to the emergence of mould damage phenomenon.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The production device for the double-chamfer straight-tooth press-fitting bolt is characterized by comprising a fixed die (1) and a movable die (2), wherein a fixed die core (3) is arranged on the fixed die (1), and the fixed die core (3) is provided with a forming cavity (4) for performing punch forming on the double chamfers on the bolt; a moving mold core (5) for performing punch forming on the nut cap of the bolt is arranged on the moving mold (2); decide the inside of mold core (3) and be equipped with first cooling chamber way (6), just be equipped with second cooling chamber way (7) on movable mold core (5), just all be equipped with on first cooling chamber way (6), second cooling chamber way (7) with cooling water inlet tube (8) and cooling water outlet pipe (9).

2. The production device for the double-chamfer straight-tooth press-fitting bolt is characterized in that the bottom of the fixed die (1) is provided with an ejection mechanism (10) for ejecting the bolt in the molding cavity (4).

3. The production device for the double-chamfer straight-tooth press-fitting bolt as claimed in claim 2, wherein the ejection mechanism (10) comprises a through hole (11) which is formed in the bottom of the fixed die (1) and communicated with the bottom of the molding cavity (4), an ejection cylinder (13) is fixed to the top of the fixed die (1) through a fixed frame (12), and an ejection rod (14) which moves along the through hole (11) is arranged at the telescopic end of the ejection cylinder (13).

4. A straight-toothed press-fitting bolt production apparatus of double chamfer according to claim 3, wherein the top of the ejector rod (14) is provided with an ejector block (15).

5. The production device for the double-chamfer straight-tooth press-fitting bolt as claimed in claim 1, wherein the fixed die (1) and the movable die (2) are provided with installation cavities (17) for installing the fixed die core (3) and the movable die core (5), and the fixed die core (3) and the movable die core (5) are fixed on the fixed die (1) and the movable die (2) through bolts.