CN215315433U

CN215315433U - Finishing tool for producing elastic pin

Info

Publication number: CN215315433U
Application number: CN202120788580.0U
Authority: CN
Inventors: 梁灰; 邹雄志; 仇海洋; 王志海; 李欢欢
Original assignee: Changzhou Hangtie Machinery Co ltd
Current assignee: Changzhou Hangtie Machinery Co ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-12-28
Anticipated expiration: 2031-04-19

Abstract

The utility model discloses a finishing tool for producing an elastic pin, which comprises a main shaft and a workbench, wherein the workbench is over against the lower part of the main shaft; the spindle is characterized by further comprising an upper bottom plate and an upper die, wherein the upper bottom plate is fixed with the spindle through a bolt, and the upper die is fixed with the upper bottom plate through a bolt; the lower bottom plate is fixed with the workbench through bolts, and the lower die is fixed with the lower bottom plate through bolts; the clamping device is arranged on the lower bottom plate and is close to the lower die; the mandrel has a simple structure, can ensure that the position of a workpiece is fixed, and is convenient for the workpiece to wrap the outer part of the mandrel.

Description

Finishing tool for producing elastic pin

Technical Field

The utility model relates to the field of stamping tools, in particular to a finishing tool for producing an elastic pin.

Background

The press forming apparatus is a method of forming a work having a desired shape and size by applying an external force to a plate, a strip, a pipe, a profile, or the like by a press machine and a die to cause plastic deformation or separation. The stamped blanks are mainly hot and cold rolled steel sheets and strips. In the world, 60-70% of steel materials are plates, and most of the plates are punched to form finished products. Since the elastic pin needs to close the U-shaped workpiece pre-pressed on the surface of the core rod during the machining process, the closing direction of the workpiece needs to be kept upward, otherwise, finishing failure may be caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides the following technical solutions: a finishing tool for producing elastic pins comprises a main shaft and a workbench, wherein the workbench is over against the lower part of the main shaft; the spindle is characterized by further comprising an upper bottom plate and an upper die, wherein the upper bottom plate is fixed with the spindle through a bolt, and the upper die is fixed with the upper bottom plate through a bolt; the lower bottom plate is fixed with the workbench through bolts, and the lower die is fixed with the lower bottom plate through bolts; the clamping device is arranged on the lower bottom plate and is close to the lower die.

Preferably, the lower end of the upper die is provided with an extrusion groove, the extrusion groove is semicircular, and the edge of the extrusion groove is arc-shaped; the lower die surface is provided with a positioning groove, and the positioning groove is an arc-shaped notch and corresponds to the extrusion groove in position.

Preferably, two conical protrusions are arranged on the side edge of the positioning groove.

Preferably, the lower end of the upper die is provided with a pair of female taper angles.

Preferably, the upper surface of the lower die is provided with a pair of male taper angles, and the male taper angles are matched with the female taper angles.

Preferably, the clamping device comprises two cylinders and two pressing plates, the cylinders are opposite to the positioning grooves, and the pressing plates are fixed at one ends, close to the positioning grooves, of the cylinders.

Compared with the prior art, the utility model has the following beneficial effects:

the special upper die structure has the advantages of simple structure, low cost, simple manufacture and simple operation, ensures that the shape of a workpiece is not damaged when the workpiece is pressed, and simultaneously ensures that the angles of the upper die and the lower die are aligned by the male cone angle and the female cone angle, thereby improving the punching accuracy; meanwhile, the direction of the closing opening of the elastic pin can be ensured by tightly jacking the front cylinder and the rear cylinder, and the finishing success probability is improved.

Drawings

FIG. 1 is a side view of the present invention;

FIG. 2 is an overall structural view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

in the figure: the device comprises a main shaft 1, a workbench 2, an upper bottom plate 3, an upper mold 4, a lower bottom plate 5, a lower mold 6, a clamping device 7, an extrusion groove 8, a positioning groove 9, a conical bulge 10, a female cone angle 11, a male cone angle 12, a pressure plate 13 and an air cylinder 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a finishing tool for producing an elastic pin comprises a main shaft 1 and a workbench 2, wherein the workbench 2 is over against the lower part of the main shaft 1; the spindle is characterized by further comprising an upper bottom plate 3 and an upper die 4, wherein the upper bottom plate 3 is fixed with the spindle 1 through a bolt, and the upper die 4 is fixed with the upper bottom plate 3 through a bolt; the lower bottom plate 5 is fixed with the workbench 2 through bolts, and the lower die 6 is fixed with the lower bottom plate 5 through bolts; the device is characterized by further comprising a clamping device 7, wherein the clamping device 7 is installed on the lower bottom plate 5 and abuts against the lower die 6, and the fact that the closing opening of the elastic pin after pretreatment can be fixed upwards is guaranteed.

The lower end of the upper die 4 is provided with an extrusion groove 8, the extrusion groove 8 is semicircular, and the edge of the extrusion groove 8 is arc-shaped; the surface of the lower die 6 is provided with a positioning groove 9, the positioning groove 9 is an arc-shaped notch, corresponds to the position of the extrusion groove 8, and the workpiece to be punched is upward at the closing-up position at the moment, so that the edge of the arc-shaped extrusion groove 5 can effectively guide the inward extrusion of the closing-up position of the workpiece, and the workpiece is ensured to be tightly attached to the outside of the core rod.

In order to support and position the core rod and the workpiece and prevent the core rod and the workpiece from rolling laterally, two conical protrusions 10 are arranged on the side of the positioning groove 9.

In order to accurately correspond the punching positions between the upper die 4 and the lower die 6, the lower end of the upper die 4 is provided with a pair of female taper angles 11. The upper surface of the lower die 6 is provided with a pair of male taper angles 12, and the male taper angles 12 are matched with the female taper angles 11.

Chucking device 7 includes two cylinders 14 and two pressure strips 13, cylinder 14 is just right constant head tank 9, pressure strip 13 is fixed in cylinder 14 is close to the one end of constant head tank 9 through both sides pressure strip 13, can avoid the orientation removal of closing up the mouth department with the elastic pin chucking of having placed on lower mould 6, and the area of pressure strip 13 is less than the dead volume of cylindrical elastic pin, influences the effect when avoiding the punching press.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A finishing tool for producing elastic pins comprises a main shaft (1) and a workbench (2), wherein the workbench (2) is over against the lower part of the main shaft (1); the method is characterized in that: the spindle is characterized by further comprising an upper bottom plate (3) and an upper die (4), wherein the upper bottom plate (3) is fixed with the spindle (1) through a bolt, and the upper die (4) is fixed with the upper bottom plate (3) through a bolt; the device is characterized by further comprising a lower bottom plate (5) and a lower die (6), wherein the lower bottom plate (5) is fixed with the workbench (2) through a bolt, and the lower die (6) is fixed with the lower bottom plate (5) through a bolt; the die also comprises a clamping device (7), wherein the clamping device (7) is arranged on the lower bottom plate (5) and is abutted against the lower die (6).

2. The finishing tool for producing the elastic pin according to claim 1, wherein: the lower end of the upper die (4) is provided with an extrusion groove (8), the extrusion groove (8) is semicircular, and the edge of the extrusion groove (8) is arc-shaped; the surface of the lower die (6) is provided with a positioning groove (9), the positioning groove (9) is an arc-shaped notch, and the position of the positioning groove (9) corresponds to that of the extrusion groove (8).

3. The finishing tool for producing the elastic pin according to claim 2, wherein: two conical bulges (10) are arranged on the side edge of the positioning groove (9).

4. The finishing tool for producing the elastic pin according to claim 2, wherein: the lower end of the upper die (4) is provided with a pair of female cone angles (11).

5. The finishing tool for producing the elastic pin according to claim 4, wherein: the upper surface of the lower die (6) is provided with a pair of male taper angles (12), and the male taper angles (12) are matched with the female taper angles (11).

6. The finishing tool for producing the elastic pin according to claim 2, wherein: the clamping device (7) comprises two air cylinders (14) and two pressing plates (13), the air cylinders (14) are opposite to the positioning grooves (9), and the pressing plates (13) are fixed at one ends, close to the positioning grooves (9), of the air cylinders (14).