CN217166297U

CN217166297U - Rivet nail core cold-heading structure

Info

Publication number: CN217166297U
Application number: CN202220223035.1U
Authority: CN
Inventors: 王建国; 吴云峰
Original assignee: SHANGHAI ANZI INDUSTRIAL CO LTD
Current assignee: SHANGHAI ANZI INDUSTRIAL CO LTD
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-08-12
Anticipated expiration: 2032-01-26

Abstract

The utility model relates to a rivet mandrel cold-heading structure relates to the field of rivet manufacturing technique, and it includes the frame, installs mould, the upset head in the frame and drive the upset head and be close to or keep away from the drive assembly of mould, and the mould slides along the direction of motion of upset head and sets up, and the one end that the upset head was kept away from to the mould is provided with the adjusting bolt who is used for adjusting the mould position, and adjusting bolt installs in the frame. This application can compensate the mould because of the error that the wearing and tearing produced through adjusting bolt adjusting die's position, has extension mould life, reduces the effect of maintenance cost.

Description

Rivet nail core cold-heading structure

Technical Field

The application relates to the field of rivet manufacturing technology, in particular to a rivet stem cold heading structure.

Background

The rivet comprises a rivet core and a rivet body, wherein the rivet body is tubular, one end of the rivet body is provided with a brim-shaped rivet cover, and the diameter of the end of the rivet cover is larger than that of other parts of the rivet body. The nail core includes the core and sets up in the head of core one end coaxially, and nail core head diameter is greater than the nail body and keeps away from the diameter of nail lid one end. When the nail core clamping device is used, the nail core is pulled out from one end, located on the nail cover, of the nail body through a tool, so that one end, far away from the nail cover, of the nail body expands and deforms, and the clamping and fixing effects are achieved.

At present, the head of the nail core is formed by cold heading by a cold heading machine in actual production. In the related art, cold heading equipment for producing a nail core comprises a rack, wherein a die for forming the head of the nail core is fixed on the rack, a pier head for punching the nail core into the die is arranged on the rack corresponding to the die, and a nail hole for installing the nail core is formed in the pier head corresponding to the die; when the nail core forming operation is carried out, a worker puts a blank of the nail core to be formed into the nail hole, one end of the nail core, which is used for forming the head, is exposed out of the nail hole, and the heading drives the nail core to feed towards the side of the die, so that the exposed part of the nail core is punched into the die, and the shape of the head of the nail core is formed.

In view of the above related technologies, the inventor believes that after the cold heading machine is used for a certain time, the die is abraded to a certain extent, so that the size of the produced nail core deviates from the preset size, and the produced nail core does not meet the requirements; at this time, the mold needs to be replaced, so that the production cost of the nail core is high.

SUMMERY OF THE UTILITY MODEL

In order to reduce the maintenance cost, this application provides a rivet mandrel cold-heading structure to this life who prolongs the mould.

The application provides a pair of rivet nail core cold-heading structure adopts following technical scheme:

the rivet core cold heading structure comprises a rack, wherein a die, an upset head and a driving assembly for driving the upset head to be close to or far away from the die are mounted on the rack, the die is arranged in a sliding mode along the movement direction of the upset head, and an adjusting assembly for adjusting the position of the die is arranged at one end, far away from the upset head, of the die.

Through adopting above-mentioned technical scheme, slide the setting with the mould in the frame to the one end of keeping away from the upset head at the mould sets up adjusting part, has used for a long time at the mould and has produced certain wearing and tearing back, and accessible adjusting part adjusts the mould to upset head one side, compensaties the tolerance that the wearing and tearing produced, thereby need not to change the mould, can prolong mould life, reduction in production cost.

Optionally, the adjusting assembly includes an adjusting bolt installed on the frame, an axial direction of the adjusting bolt is parallel to a moving direction of the die, an end of the adjusting bolt abuts against one end of the die, which is far away from the upset head, and a locking nut is installed on the adjusting bolt.

By adopting the technical scheme, the adjusting bolt is arranged on the rack, the die is pushed to the side of the upsetting head by screwing the adjusting bolt, the adjusting method is simple and convenient, the locking nut is arranged on the adjusting bolt, and the adjusting bolt can be locked and fixed through the locking nut after being adjusted in place, so that the adjusting bolt is prevented from being sent.

Optionally, a forming hole is formed in the rack at a position corresponding to the installation position of the die, the die is slidably disposed in the forming hole, a nail hole coaxial with the forming hole is formed in the upset head, and a forming head matched with the upset head is disposed on the upset head corresponding to the forming hole.

Through adopting above-mentioned technical scheme, all slide the mould and take shape the head and set up in the shaping downthehole, utilize the shaping pore pair mould and take shape the head and carry on spacingly, help promoting the accuracy that the pier nose rushed into in the mould to help guaranteeing the yield of nail core, the mould slides and sets up in the shaping downthehole simultaneously, conveniently adjusts the mould position.

Optionally, the driving assembly includes a crankshaft and a first connecting rod, the crankshaft is provided with a first connecting rod journal, and two ends of the first connecting rod are respectively rotatably connected to the upset head and the first connecting rod journal.

By adopting the technical scheme, the driving assembly is arranged into the crankshaft and the first connecting rod, the crankshaft drives the connecting rod to move, and the connecting rod drives the upset head to do reciprocating linear motion.

Optionally, the die further comprises a push rod, the middle of the push rod is hinged to the frame, the rotation axis of the push rod is perpendicular to the movement direction of the die, one end of the push rod is located between the die and the adjusting bolt, a pushing assembly for driving the push rod to rotate is arranged on the frame, the pushing assembly is located at one end of the push rod, which is far away from the die, and the pushing assembly and the upset head are located on the same side of the push rod.

Through adopting above-mentioned technical scheme, the hinge mount push rod in the frame, when the upset head dashes into the mould with the nail core, the push rod follows the mould and rotates and support tightly on adjusting screw, after the nail core takes shape, the upset head moves back, the head of nail core is because the inflation card is in the shaping hole, promote the one end that the mould was kept away from to the subassembly promotion push rod this moment, the push rod rotates around the hinge, the one end that the push rod is close to the mould is with the mould to upset head one side motion, release the shaping hole with the nail core, realize automatic discharging, need not the manual work and get the material, can effectively save the cost of labor.

Optionally, an abutting part is further arranged at one end of the die close to the push rod, and the size of the abutting part is larger than the diameter of the forming hole.

Through adopting above-mentioned technical scheme, be close to push rod one side at the mould and set up butt portion, when the push rod promoted the mould ejection of compact, butt portion supported tightly in the frame, can prevent that the mould from following the nail core and deviating from in the shaping hole together.

Optionally, the pushing assembly includes a push rod and a second connecting rod, the push rod is parallel to the heading and is arranged to slide along its own axial direction, a second connecting rod journal is arranged on the crankshaft, the second connecting rod journal and the first connecting rod journal are distributed at 180 degrees, and two ends of the second connecting rod are respectively rotatably connected to the push rod and the second connecting rod journal.

By adopting the technical scheme, the ejector rod is arranged on the frame in a sliding manner, the crankshaft is provided with the second connecting rod journal, the ejector rod is connected with the second connecting rod journal through the second connecting rod, and the crankshaft rotates to drive the ejector rod to do reciprocating linear motion; the second connecting rod and the first connecting rod are distributed at 180 degrees, and the crankshaft can drive the heading and the pushing assembly at the same time, so that the structure is simple, and the control is convenient.

Optionally, one end of the ejector rod, which is close to the push rod, is coaxially provided with a threaded hole, an adjusting screw rod is installed in the threaded hole, and a locking nut is installed on the adjusting screw rod.

Through adopting above-mentioned technical scheme, set up the screw hole at the ejector pin is close to the one end of push rod is coaxial to at downthehole installation adjusting screw, twist adjusting screw into and screw out the whole length of adjusting the ejector pin, through continuous use, there can be wearing and tearing in the one end that the ejector pin is close to the push rod, the tolerance of wearing and tearing is compensatied to the length that accessible adjustment adjusting screw stretches out, ensures that ejector pin and push rod can normally work.

In summary, the present application includes at least one of the following beneficial technical effects:

the die is arranged on the rack in a sliding mode, the adjusting assembly is arranged at one end, away from the upset head, of the die, and after the die is worn when used, the die can be moved to one side of the upset head through the adjusting assembly, so that errors caused by wear are made up, the die does not need to be replaced, and qualified nail cores can be machined, the service life of the die is prolonged, and the manufacturing cost is reduced;

through setting up the push rod and promoting the subassembly, when the upset head is punched the refill into the shaping hole, the mould top is moved and is promoted subassembly laminating adjusting bolt, after the refill takes shape, the upset head moves back, refill head inflation card is in the shaping hole, promotes the subassembly this moment and promotes the push rod, and the one end that the push rod is close to the mould promotes the mould to upset head one side, releases the refill mould, realizes the ejection of compact, need not the manual material of workman, simple structure convenient to use.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

fig. 2 is a partial structural schematic diagram of an embodiment of the present application.

Reference numerals: 1. a frame; 11. forming a hole; 2. heading; 21. a forming head; 22. nailing holes; 3. a mold; 31. an abutting portion; 4. an adjustment assembly; 41. adjusting the bolt; 42. locking the nut; 43. an adjusting seat; 6. a push rod; 7. a mounting seat; 8. a pushing assembly; 81. a top rod; 82. adjusting the screw rod; 83. a guide sleeve; 9. a drive assembly; 91. a crankshaft; 911. a first connecting rod journal; 912. a second connecting rod journal; 92. a first link; 93. a second link.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a rivet mandrel cold heading structure, referring to fig. 1 and 2, which comprises a frame 1, an upset head 2, a die 3, a push rod 6, a pushing assembly 8 and a driving assembly 9 for driving the upset head 2 and the pushing assembly 8. A forming hole 11 is formed in the frame 1, and the heading 2 is coaxially arranged at one end of the forming hole 11; the die 3 is slidably mounted in the forming hole 11, a cylindrical abutting part 31 is arranged at one end of the die 3 away from the upset head 2, and the diameter of the abutting part 31 is larger than that of the forming hole 11; an adjusting component 4 for adjusting the position of the die 3 is arranged at one end of the die 3 away from the heading 2; a guide sleeve 83 is fixed on the frame 1, the guide sleeve 83 is coaxial with the forming hole 11, the heading 2 is slidably mounted in the guide sleeve 83, and the heading 2 is driven by the driving assembly 9 to be close to or far away from the die 3; the push rod 6 is arranged at one end of the die 3 far away from the heading 2, and one end of the die 3 is abutted against the push rod 6; a mounting seat 7 with a U-shaped outline is fixed on the frame 1 corresponding to the mounting position of the push rod 6, the middle part of the push rod 6 is hinged on the mounting seat 7, and the rotation axis of the push rod 6 is vertical to the moving direction of the die 3; the pushing assembly 8 is arranged at one end, far away from the die 3, of the push rod 6, the pushing assembly 8 and the heading head 2 are located on the same side of the push rod 6, and the pushing assembly 8 pushes the push rod 6 to rotate around the hinge.

The adjusting assembly 4 comprises an adjusting seat 43 arranged on one side of the die 3 far away from the heading 2, the overall structure of the adjusting seat 43 is in a shape like a Chinese character 'ji', and the adjusting seat 43 is fixed on the rack 1 through bolts; a threaded hole is formed in the adjusting seat 43, an adjusting bolt 41 is installed in the threaded hole, and the adjusting bolt 41 is coaxial with the forming hole 11; the adjusting bolt 41 abuts on one end of the push rod 6 far away from the die 3 and is locked and fixed on the adjusting seat 43 through the locking nut 42.

The upset head 2 is in a cylindrical structure, a forming head 21 which is in sliding fit with the forming hole 11 is integrally arranged at one end, close to the forming hole 11, of the upset head 2, a nail hole 22 which is coaxial with the forming hole 11 is formed at one end, close to the forming hole 11, of the upset head 2, and the nail core is inserted into the nail hole 22 and extends out of a section for forming a head of the nail core.

The heading head 2 is driven by the driving assembly 9 to punch the forming hole 11, and a section of the mandrel exposed out of the mandrel hole 22 is pressed by the forming head 21 and the die 3 to form a mandrel head shape; the heading 2 leaves the forming hole 11 under the driving of the driving component 9, and the nail core is blocked in the forming hole 11 due to the expansion of the head; the pushing assembly 8 pushes the push rod 6 to enable one end, close to the die 3, of the push rod 6 to move towards the heading 2, the die 3 is driven to push the formed nail core out of the forming hole 11, and discharging is achieved.

The pushing assembly 8 comprises a mandril 81 and a guide sleeve 83, and the guide sleeve 83 is fixed on the frame 1 through a bolt and is parallel to the axis of the heading 2; the ejector rod 81 is a cylindrical rod body, and the ejector rod 81 is slidably arranged in the guide sleeve 83; one end of the ejector rod 81 close to the push rod 6 is coaxially provided with a threaded hole, an adjusting screw 82 is arranged in the threaded hole, and the whole length of the ejector rod 81 can be adjusted by screwing in and screwing out the adjusting screw 82; the adjusting screw 82 is locked and fixed on the top rod 81 through the locking nut 42.

The drive assembly 9 includes a crankshaft 91, a first connecting rod 92, and a second connecting rod 93. The crankshaft 91 is provided with a first connecting rod journal 911 and a second connecting rod journal 912, which are arranged at 180 degrees. Two ends of the first connecting rod 92 are respectively and rotatably connected with the upset head 2 and the first connecting rod journal 911; two ends of the second connecting rod 93 are respectively and rotatably connected with the top rod 81 and a second connecting rod journal 912. When the crankshaft 91 is rotated, the heading head 2 and the ejector rod 81 do reciprocating linear motion, and the motion directions are opposite; when the heading 2 brings the nail core close to the die 3, the ejector rod 81 is far away from the push rod 6; when the upset head 2 is far from the die 3 after the formation is finished, the ejector pin 81 pushes the push rod 6 to approach the push rod 6 to push the formed core out of the forming hole 11.

The implementation principle of the rivet stem cold heading structure disclosed by the embodiment of the application is as follows: through setting up shaping hole 11 on frame 1, slide mould 3 and set up in shaping hole 11 to set up adjusting bolt 41 in the one end that mould 3 kept away from upset 2, after mould 3 produced wearing and tearing using, accessible adjusting bolt 41 promoted mould 3 to upset 2 one side certain distance, thereby compensatied mould 3 because of the error that the wearing and tearing produced, thereby need not to change mould 3, can prolong the life of mould 3, reduce the maintenance cost.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a rivet mandrel cold-heading structure which characterized in that: the upsetting die comprises a frame (1), wherein a die (3), an upsetting head (2) and a driving assembly (9) for driving the upsetting head (2) to be close to or far away from the die (3) are mounted on the frame (1), the die (3) is arranged in a sliding mode along the moving direction of the upsetting head (2), and an adjusting assembly (4) for adjusting the position of the die (3) is arranged at one end, far away from the upsetting head (2), of the die (3).

2. The rivet stem cold heading structure of claim 1, wherein: the adjusting assembly (4) comprises an adjusting bolt (41) installed on the rack (1), the axial direction of the adjusting bolt (41) is parallel to the moving direction of the die (3), the end part of the adjusting bolt (41) abuts against one end, far away from the upset head (2), of the die (3), and a locking nut (42) is installed on the adjusting bolt (41).

3. The rivet stem cold heading structure of claim 2, wherein: the forming device is characterized in that a forming hole (11) is formed in the rack (1) corresponding to the installation position of the die (3), the die (3) is arranged in the forming hole (11) in a sliding mode, a nail hole (22) coaxial with the forming hole (11) is formed in the heading (2), and a forming head (21) matched with the heading (2) corresponding to the forming hole (11) is arranged on the heading (2).

4. The rivet stem cold heading structure of claim 3, wherein: the driving assembly (9) comprises a crankshaft (91) and a first connecting rod (92), a first connecting rod journal (911) is arranged on the crankshaft (91), and two ends of the first connecting rod (92) are respectively and rotatably connected with the upset head (2) and the first connecting rod journal (911).

5. The rivet stem cold heading structure according to claim 4, characterized in that: the push rod mechanism is characterized by further comprising a push rod (6), the middle of the push rod (6) is hinged to the rack (1), the rotating axis of the push rod (6) is perpendicular to the moving direction of the die (3), one end of the push rod (6) is located between the die (3) and the adjusting bolt (41), a pushing assembly (8) for driving the push rod (6) to rotate is arranged on the rack (1), the pushing assembly (8) is located at one end, far away from the die (3), of the push rod (6), and the pushing assembly (8) and the heading (2) are located on the same side of the push rod (6).

6. The rivet stem cold heading structure of claim 5, wherein: an abutting part (31) is further arranged at one end, close to the push rod (6), of the die (3), and the size of the abutting part (31) is larger than the diameter of the forming hole (11).

7. The rivet stem cold heading structure of claim 5, wherein: the pushing assembly (8) comprises a push rod (81) and a second connecting rod (93), the push rod (81) is arranged in parallel with the heading (2) and is arranged in a sliding mode along the axial direction of the push rod, a second connecting rod journal (912) is arranged on the crankshaft (91), the second connecting rod journal (912) and the first connecting rod journal (911) are distributed in a 180-degree mode, and two ends of the second connecting rod (93) are connected with the push rod (81) and the second connecting rod journal (912) in a rotating mode respectively.

8. The rivet stem cold heading structure of claim 7, wherein: one end of the ejector rod (81) close to the push rod (6) is coaxially provided with a threaded hole, an adjusting screw rod (82) is installed in the threaded hole, and a locking nut (42) is installed on the adjusting screw rod (82).