CN113492179B - A shrinking device - Google Patents

Abstract

The present invention relates to the field of mechanical processing technology, in particular to a shrinking device, including a workbench, a die and a punch, a pad is provided on the workbench, a locking block, a die and a guide column are provided on the pad, a receiving groove 1 is provided on the locking block, the die is placed on the pad at one end of the receiving groove, the die includes a matching die base 1 and a die base 2, the die base 1 and the die base 2 form a groove for accommodating a workpiece when closed, the pad at the lower end of the groove and the workbench are both provided with a receiving groove 2 connected to the groove, the ends of the receiving groove 1 and the receiving groove 2 are provided with openings, the guide columns are located on both sides of the locking block, the outer side of the guide columns is sleeved with an elastic body, the guide column at the upper end of the elastic body is provided with a guide plate, the upper end of the guide plate is provided with a punch that can move up and down, the punch is connected to a driving device, the lower end of the guide plate is provided with a punch, and the punch is located above the groove. The uniform plastic deformation of the shrinking is achieved, the elliptical deformation is effectively avoided, and the shrinking quality is guaranteed.

Description

A shrinking device

Technical Field

The invention relates to the technical field of mechanical processing, and in particular to a necking device.

Background Art

The shrinking process of the C-type clamp platen is to screw the screw and the C-type clamp body together, put the ball head of the screw into the hole of the platen, and use a press to punch the small end of the platen. The small end hole is plastically deformed and reduced, so that it cannot fall off from the ball head of the screw, thus completing the shrinking process. When the press applies relative pressure F to the small end of the platen, the deformation degree of the platen is difficult to control, and elliptical plastic deformation is prone to occur at the shrinking point. It is easy for the C-type clamp body to fall off or lock due to loose locking. The quality of the product is restricted by the operator's technical level, and the shrinking is not beautiful.

Summary of the invention

The invention aims to provide a necking device for the problem that an elliptical plastic deformation is easily generated when a C-type clamping plate is necked in the prior art.

The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a shrinking device comprises a workbench, a die and a punch, the workbench is provided with a pad, the pad is provided with a locking block, a die and a guide column, the locking block is provided with a accommodating groove 1, the die is placed on the pad at one place of the accommodating groove, the die comprises a matching die base 1 and a die base 2, the die base 1 and the die base 2 form a groove for accommodating a workpiece when closed, the pad at the lower end of the groove and the workbench are both provided with an accommodating groove 2 connected to the groove, the ends of the accommodating groove 1 and the accommodating groove 2 are provided with openings, the guide column is located on both sides of the locking block, the outer side of the guide column is sleeved with an elastomer, the guide column at the upper end of the elastomer is provided with a guide plate, the upper end of the guide plate is provided with a punch which can move up and down, the punch is connected to a driving device, the lower end of the guide plate is provided with a punch, and the punch is located above the groove.

The beneficial effects of the present invention are as follows: the present invention ensures that the workpiece is evenly stressed in a 360° circumference by arranging grooves on the die, realizes uniform plastic deformation of the necking, effectively avoids elliptical deformation, and is connected to the driving device through the punch so that the pressure can be set, thereby preventing the situation of loose locking or locking. The overall operation is simple and is no longer limited by the operator's technical level. The necking is uniform and beautiful, with stable quality, which greatly improves the necking efficiency. By setting the die as a matching die base one and die base two, it is convenient to remove the workpiece that has completed the necking.

On the basis of the above technical solution, in order to achieve the convenience of use and the stability of the equipment, the present invention can also make the following improvements to the above technical solution:

Furthermore, the die also includes a connecting plate, one end of which is rotatably connected to the die base one, and the other end of which is rotatably connected to the die base two.

The beneficial effect of adopting the above further technical solution is that it can control the closed position of mold base one and mold base two to ensure the formation of a complete groove, and at the same time facilitate storage to avoid the phenomenon of mold base confusion.

Furthermore, the connecting plate is rotatably connected to the mold base one and the mold base two respectively through two guide pins, and the pad is provided with guide grooves corresponding to the two guide pins.

The beneficial effect of adopting the above further technical solution is that the guide pin can not only ensure the installation requirements of the two mold bases, but also cooperate with the guide groove to control the installation position of the die, thereby ensuring the accuracy of the shrinking position.

Furthermore, the groove includes a connected V-shaped hole and a cylindrical hole.

The beneficial effect of adopting the above further technical solution is: it is convenient to place the pressure plate on the V-shaped hole, and the screw rod passes through the cylindrical hole to contact the pressure plate on the V-shaped hole, thereby realizing a 360° shrinking operation and ensuring the shrinking quality.

Furthermore, an inclined surface is provided at the lower end of the cylindrical hole, and a weight-reducing groove is provided on the lower end surface of the die.

The beneficial effects of adopting the above further technical solution are: the inclined surface guides the screw rod, making it easier to insert the screw rod into the groove; the weight-reducing groove can reduce the weight of the die and reduce the thickness of the groove, making it easier to insert the workpiece.

Furthermore, the first accommodating groove and the second accommodating groove are U-shaped grooves.

The beneficial effects of adopting the above further technical solution are: simple processing, convenient removal of the workpiece with the necked portion completed from the side, and reduced difficulty in installing and removing the workpiece.

Furthermore, the male die includes two pressure rods, which are mounted on the fixed plate, and the fixed plate is connected to the driving device via a die handle.

The beneficial effect of adopting the above further technical solution is that the two pressure rod structures can ensure the uniformity of the force on the connecting plate, thereby ensuring the uniformity of the shrinkage and the quality of the shrinkage.

Furthermore, the driving device is a press, and the elastic body is a compression spring.

The beneficial effects of adopting the above further technical solution are: stable and reliable power transmission, simple structure, convenient installation and disassembly, and easy maintenance.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a necking device according to the present invention;

FIG2 is a cross-sectional view of a partial structure of a necking device according to the present invention;

FIG3 is a schematic diagram of the structure of the locking block and the guide groove of the present invention;

FIG4 is a schematic structural diagram of a concave mold of the present invention;

FIG. 5 is a schematic diagram of installing a workpiece.

The accompanying drawings are marked as follows: 1. workbench; 2. pad; 3. guide column; 4. elastomer; 5. guide sleeve; 6. accommodating groove 2; 7. accommodating groove 1; 8. guide plate; 9. fixing plate; 10. screw; 11. die handle; 12. set screw; 13. punch; 14. nut; 15. punch; 16. weight-reducing groove; 17. locking block; 18. guide groove; 19. connecting plate; 20. guide pin; 21. die; 22. groove; 23. C-type clamping plate; 24. screw.

DETAILED DESCRIPTION

The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

Please refer to Figures 1 to 5, a shrinking device includes a workbench 1, a die 21 and a punch 13, the workbench 1 is provided with a pad 2, the pad 2 is provided with a locking block 17, a die 21 and a guide column 3, the locking block 17 is provided with a receiving groove 7, the die 21 is placed on the pad 2 at the receiving groove 7, the die 21 includes a matching die base 1 and a die base 2, the die base 1 and the die base 2 are closed to form a groove 22 for accommodating a workpiece, the pad 2 at the lower end of the groove 22 and the workbench 1 are provided with a receiving groove 6 connected to the groove 22, It is convenient for the workpiece to pass through the accommodating groove 2 6 and place the end of the workpiece in the groove 22. The ends of the accommodating groove 1 7 and the accommodating groove 2 6 are provided with openings. The opening structure facilitates the removal of the workpiece that has completed the shrinking operation. The guide column 3 is located on both sides of the locking block 17. The outer side of the guide column is sleeved with an elastomer 4. The guide column 3 at the upper end of the elastomer 4 is provided with a guide plate 8. The upper end of the guide plate 8 is provided with a punch 13 that can move up and down. The punch 13 is connected to the driving device. The lower end of the guide plate 8 is provided with a punch 15, and the punch 15 is located above the groove 22.

In a preferred embodiment, the accommodating groove 1 7 and the accommodating groove 2 6 are U-shaped grooves.

A guide sleeve 5 is provided between the guide post 3 and the guide plate 8 to ensure that the guide plate 8 moves along the guide post 3 under the action of external force.

The elastic body 4 is preferably a compression spring. Optionally, the elastic body 4 may also be a rubber sleeve.

The die 21 also includes a connecting plate 19, one end of which is rotatably connected to the die base 1, and the other end is rotatably connected to the die base 2. The ends of the die bases 1 and 2 connected to the connecting plate 19 are provided with rounded corners to facilitate the rotation of the die bases 1 and 2. When the die bases 1 and 2 rotate to contact the side walls, the die 21 is in a closed state, and a complete groove 22 is formed on the die 21.

The connecting plate 19 is rotatably connected to the die base 1 and the die base 2 respectively through two guide pins 20, and the pad 2 is provided with guide grooves 18 corresponding to the two guide pins 20. One end of the guide pin 20 is provided with a cylinder that matches the guide groove 18, and the other end is provided with a thread, and the die base 1 and the die base 2 are rotatably connected to the connecting plate 19 respectively through the nut 14 and the thread, and one end of the cylinder is provided with a limiting protrusion, so as to control the installation depth of the guide pin 20 and ensure the connection and guiding function of the guide pin 20.

The groove 22 includes a connected V-shaped hole and a cylindrical hole. The size of the V-shaped hole corresponds to the size of the workpiece to be shrunken. In this embodiment, the workpiece is a C-shaped clamping plate 23. During processing, the C-shaped clamping plate 23 is placed in the V-shaped hole, and the screw rod 24 passes through the cylindrical hole and extends into the C-shaped clamping plate 23 on the V-shaped hole, preparing for the next step of the shrunken process.

The lower end of the cylindrical hole is provided with an inclined surface, and the lower end surface of the die 21 is provided with a weight-reducing groove 16. The weight-reducing groove 16 is a U-shaped groove, which is easy to process and reduces the difficulty of processing.

The punch 13 includes two pressure rods, which are mounted on the fixed plate 9. The fixed plate 9 is connected to the driving device through the die handle 11. The driving device is a hydraulic press. The two pressure rods are located on both sides of the punch 15 to prevent the punch 15 from tilting and ensure that the workpiece is evenly stressed.

The use process of the present invention is as follows:

Place the C-shaped clamping plate 23 with its flat surface facing upward and its small end facing downward in the groove 22 of the die 21 , and insert the screw rod 24 into the groove 22 from bottom to top, making sure that the ball head of the screw rod 24 is placed in the hole of the C-shaped clamping plate 23 .

The die handle 11 and the punch 13 are respectively mounted on the fixed plate 9 by means of the set screws 12 and the screws 10. The punch 13 is connected to the hydraulic press through the die handle 11. The hydraulic press drives the punch 13 to move downward until it contacts the guide plate 8, and pushes the guide plate 8 and the punch 15 to move downward along the guide column 3 until the punch 15 contacts the plane of the C-type clamping plate 23 and continues to press downward, so that the small end of the C-type clamping plate 23 is plastically deformed and shrunken along the V-shaped hole of the die 21. When the hydraulic press reaches the set pressure, it ensures that the C-type clamping plate 23 does not separate from the screw rod 24 and rotates flexibly at the ball head of the screw rod 24, and the hydraulic press stops moving downward. After maintaining the pressure for a certain period of time, the hydraulic press drives the punch 13 to move upward, and the punch 13 is separated from the guide plate 8. Under the reverse action of the elastic body 4, the guide plate 8 drives the punch 15 to move upward and reset along the guide column 3.

The concave die 21 is taken out together with the C-type clamp assembly after the shrinking is completed, and the mold base 1 and the mold base 2 are rotated to open the groove 22, and the concave die 21 is separated from the C-type clamp assembly to complete the shrinking process.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A shrinking device, characterized in that it comprises a workbench, a die and a punch, the workbench is provided with a pad, the pad is provided with a locking block, a die and a guide column, the locking block is provided with a receiving groove 1, the die is placed on the pad at one place of the receiving groove, the die comprises a matching die base 1 and a die base 2, the die base 1 and the die base 2 form a groove for accommodating a workpiece when closed, the pad at the lower end of the groove and the workbench are both provided with a receiving groove 2 connected to the groove, the ends of the receiving groove 1 and the receiving groove 2 are provided with openings, the receiving groove 1 and the receiving groove 2 are U-shaped grooves, and the guide column is located at the locking block On both sides, an elastic body is sleeved on the outer side of the guide column, a guide plate is provided on the guide column at the upper end of the elastic body, a punch which can move up and down is provided on the upper end of the guide plate, the punch is connected to the driving device, a punch is provided at the lower end of the guide plate, the punch is located above the groove, the die also includes a connecting plate, one end of the connecting plate is rotatably connected to the die base one, and the other end is rotatably connected to the die base two, the connecting plate is rotatably connected to the die base one and the die base two respectively through two guide pins, and a guide groove corresponding to the two guide pins is provided on the pad, and the guide groove is a long strip groove with an opening at one end. 2. The necking device according to claim 1 is characterized in that the groove comprises a connected V-shaped hole and a cylindrical hole. 3. The shrinking device according to claim 2 is characterized in that an inclined surface is provided at the lower end of the cylindrical hole, and a weight-reducing groove is provided on the lower end surface of the die. 4. The necking device according to claim 1 is characterized in that the male die comprises two pressure rods, the two pressure rods are mounted on a fixed plate, and the fixed plate is connected to the driving device through a die handle. 5. The necking device according to claim 1 or 4, characterized in that the driving device is a press and the elastic body is a compression spring.