CN210359085U

CN210359085U - Protective structure for ejection of cold heading die of slender rod piece

Info

Publication number: CN210359085U
Application number: CN201921115180.2U
Authority: CN
Inventors: 饶陈伟; 孙菲; 孙浩
Original assignee: SUZHOU SHINING HIGH STRENGTH FASTENER CO Ltd
Current assignee: SUZHOU SHINING HIGH STRENGTH FASTENER CO Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-21
Anticipated expiration: 2029-07-16

Abstract

The utility model relates to an ejecting protection architecture of slender pole piece cold-heading mould, it includes: the guide sleeve comprises a sleeve body and a guide hole formed in the sleeve body; the multi-groove push rod is movably inserted into the guide hole and comprises a rod body and a plurality of grooves which are formed in the peripheral surface of the rod body and are parallel to the axial lead of the rod body; the insert blocks are movably inserted into the corresponding grooves. The multi-groove push rod and the insert are respectively extruded by means of external force, so that the long and thin rod piece is uniformly forced to be slowly pushed out of the cold heading die by means of the matching of the multi-groove push rod and the insert, and the situations of bending and the like caused by too large friction force are avoided.

Description

Protective structure for ejection of cold heading die of slender rod piece

Technical Field

The utility model belongs to the mould field, concretely relates to ejecting protection architecture of slender rod piece cold-heading mould.

Background

Fasteners are a generic term for a class of mechanical parts used to join two or more parts (or components) together. A wide variety of fasteners are found on a variety of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical, instrumentation, and the like. At present, most of bolts in the market are processed by using a cold heading die. However, for the slender bolt, the bolt is easy to be stressed and bent and deformed in the cold heading process, and the bolt is also easy to be stressed and deformed in the process of being separated from the module, so that a protection structure for ejection in the cold heading discharging process of the slender bolt needs to be designed to prevent the slender bolt from being bent.

Disclosure of Invention

The utility model aims at providing an ejecting protection architecture of slender pole piece cold-heading mould in order to overcome prior art not enough.

In order to achieve the above object, the utility model provides a following technical scheme: a protection structure for the ejection of a cold heading die of a slender rod piece comprises:

the guide sleeve comprises a sleeve body and a guide hole formed in the sleeve body;

the multi-groove push rod is movably inserted into the guide hole and comprises a rod body and a plurality of grooves which are formed in the peripheral surface of the rod body and are parallel to the axial lead of the rod body;

the insert blocks are movably inserted into the corresponding grooves.

Preferably, the sleeve body comprises a first cylinder, a second cylinder and a third cylinder, the second cylinder is integrally formed at the center of the end face of the first cylinder, the diameter of the second cylinder is smaller than that of the first cylinder, the third cylinder is integrally formed at the center of the other end face of the first cylinder, the diameter of the third cylinder is larger than that of the first cylinder, the guide hole penetrates through the first cylinder, the second cylinder and the third cylinder, a first annular groove is formed in the peripheral surface of the first cylinder, and a second annular groove is formed at the joint of the first cylinder and the third cylinder.

Further, a bell mouth is formed at the end part of the guide hole located in the second cylinder, and a step flaring is formed at the end part of the guide hole located in the third cylinder.

Preferably, the plurality of grooves are axisymmetrical about the axial center of the rod body.

Further, the number of the grooves and the number of the inserts are three independently of each other.

Furthermore, the groove is provided with two oppositely arranged side surfaces, and the distance between the two side surfaces is gradually increased from inside to outside; the end surface of the insert is triangular and matched with the groove.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses ejecting protection architecture of slender rod piece cold-heading mould, through set up supporting multislot push rod at the guide pin bushing to with a plurality of corresponding recesses that insert the multislot push rod, can put into the cold-heading mould with the guide pin bushing like this, thereby with the help of external force to the multislot push rod, insert to extrude respectively and utilize multislot push rod and the cooperation of inserting to carry out even application of force from releasing it from the cold-heading mould slender rod piece, avoid the frictional force too big and the emergence of the circumstances such as the bending that causes.

Drawings

Fig. 1 is a schematic structural view of a guide sleeve of a protective structure ejected by a cold heading die of a slender rod piece according to the present invention;

FIG. 2 is a schematic structural view of a multi-groove push rod and an insert block of a protection structure ejected by a cold heading die of a slender rod piece according to the present invention;

fig. 3 is a side view of fig. 2.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

The protection structure for the cold heading die ejection of the slender rod piece as shown in fig. 1 to 3 mainly comprises a guide sleeve 1, an insert 2, a multi-groove push rod 3 and the like.

The guide sleeve 1 comprises a sleeve body 11 and a guide hole 12 formed in the sleeve body 11; the guide hole 12 is located at the center of the sleeve body 11, and the axial lines thereof coincide with the axial line of the sleeve body 11. The multi-groove push rod 3 is movably inserted into the guide hole 12 and comprises a rod body 31 and a plurality of grooves 32 which are arranged on the circumferential surface of the rod body 31 and are parallel to the axial lead of the rod body 31 (namely, the extending direction of the grooves 32 is parallel to the axial lead of the rod body 31); after the guide sleeve 1 is fixed, the multi-groove push rod 3 can be pushed to move in the guide hole 12 by means of external force or an external component. The insert 2 is provided with a plurality of inserts, the number of the inserts is consistent with that of the grooves 32, and the inserts can be movably inserted into the corresponding grooves 32; when the multi-groove push rod is used, the insert blocks 2 can be uniformly applied with force to enable the long and thin rod piece bolt to move, and then the multi-groove push rod 3 is used for efficiently pushing the long and thin rod piece bolt out.

In this embodiment, the sleeve body 11 includes a first cylinder 111, a second cylinder 112 integrally formed at the center of the end surface of the first cylinder 111 and having a diameter smaller than that of the first cylinder 111, and a third cylinder 113 integrally formed at the center of the other end surface of the first cylinder 111 and having a diameter larger than that of the first cylinder 111, the guide hole 12 penetrates through the first cylinder 111, the second cylinder 112, and the third cylinder 113, a first annular groove 114 is formed on the circumferential surface of the first cylinder 111, and a second annular groove 115 is formed at the joint of the first cylinder 111 and the third cylinder 113, which is favorable for being matched with other components to realize stable fixation of the guide sleeve 1. The end of the guide hole 12 in the second cylinder 112 is formed with a flare 121, and the end in the third cylinder 113 is formed with a stepped flare 122 (the stepped flare 122 has a diameter larger than that in the second cylinder 112 to form a corresponding stepped portion). The plurality of grooves 32 are axisymmetrical with respect to the axial center of the rod body 31, which is advantageous for the uniformity of the force applied by the insert 2 to ensure the uniform application of the thrust to the elongated rod bolt. The number of the grooves 32 and the inserts 2 is three independently of each other. The groove 32 has two opposite side surfaces (both inclined surfaces), and the distance between the two side surfaces is gradually increased from inside to outside (from the center of the multi-groove push rod 3 to the square of the peripheral surface thereof), so that the end surface of the insert 2 is triangular and matched with the groove 32.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides an ejecting protection architecture of slender pole piece cold-heading mould which characterized in that, it includes:

the guide sleeve (1), the said guide sleeve (1) includes the body of the cover (11) and guide hole (12) set up in the said body of the cover (11);

the multi-groove push rod (3) is movably inserted into the guide hole (12) and comprises a rod body (31) and a plurality of grooves (32) which are formed in the peripheral surface of the rod body (31) and are parallel to the axial lead of the rod body;

the insert type structure comprises a plurality of inserts (2), wherein the inserts (2) are movably inserted into the corresponding grooves (32).

2. The protective structure for the cold heading die ejection of the slender rod piece according to claim 1, wherein: the sleeve body (11) comprises a first cylinder (111), a second cylinder (112) and a third cylinder (113), wherein the second cylinder (112) is integrally formed at the center of the end face of the first cylinder (111) and has a diameter smaller than that of the first cylinder (111), the third cylinder (113) is integrally formed at the center of the other end face of the first cylinder (111) and has a diameter larger than that of the first cylinder (111), the guide hole (12) penetrates through the first cylinder (111), the second cylinder (112) and the third cylinder (113), a first annular groove (114) is formed in the peripheral surface of the first cylinder (111), and a second annular groove (115) is formed at the joint of the first cylinder (111) and the third cylinder (113).

3. The protective structure for the cold heading die ejection of the elongated rod according to claim 2, wherein: the end of the guide hole (12) in the second cylinder (112) is formed with a flare (121), and the end in the third cylinder (113) is formed with a stepped flare (122).

4. The protective structure for the cold heading die ejection of the slender rod piece according to claim 1, wherein: the plurality of grooves (32) are axisymmetrical with respect to the axial center of the rod body (31).

5. The protective structure for the cold heading die ejection of the slender rod piece according to claim 1 or 4, wherein: the number of the grooves (32) and the number of the inserts (2) are three independently of each other.

6. The protective structure for the cold heading die ejection of the elongated rod according to claim 5, wherein: the groove (32) is provided with two oppositely arranged side surfaces, and the distance between the two side surfaces is gradually increased from inside to outside; the end surface of the insert (2) is triangular and matched with the groove (32).