CN217044227U

CN217044227U - Movable punch assembly and cold punching die

Info

Publication number: CN217044227U
Application number: CN202220400452.9U
Authority: CN
Inventors: 李国强; 王鸣华; 叶虎
Original assignee: Jiangsu Huaqiang Mould Technology Co ltd
Current assignee: Jiangsu Huaqiang Mould Technology Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-07-26
Anticipated expiration: 2032-02-25

Abstract

The utility model discloses a movable punch head component and a cold punching die, wherein the movable punch head component comprises a cushion block, a fixed block, a movable cushion block, a cylinder, two linear springs and two punch heads; the movable cushion block is slidably arranged in the U-shaped through groove of the fixed block, the top surface of the movable cushion block is provided with a first horizontal top surface and a second horizontal top surface, the air cylinder is arranged on the side surface of the fixed block, the piston rod of the air cylinder extends into the U-shaped through groove and is connected with the movable cushion block, a first through hole and a second through hole are formed in the fixed block, and the two linear springs and the two punches are respectively arranged in the first through hole and the second through hole; the lower ends of the two punches respectively penetrate through the two linear springs to be movably connected with the top surface of the movable cushion block. The utility model is used for the stamping modeling is the same, during the auto parts of only the hole site difference, can avoid making two sets of mould frocks, reduces the cost of manufacture of mould frocks.

Description

Movable punch assembly and cold punching die

Technical Field

The utility model relates to a car body cold punching mould technical field, concretely relates to activity towards subassembly and cold punching mould.

Background

The cold stamping die for the automobile body is the die with the highest requirement and the largest processing and assembling difficulty in automobile manufacturing, and is also important cold stamping process equipment which is rapidly developed in the manufacturing of electromechanical products in China. In different motorcycle types, some parts are the same in shape, only the hole site is different, and when this kind of part of punching press, need make two sets of mould frocks and realize the drilling function, this manufacturing and the use cost that has increased the mould frock undoubtedly. If the mould design is for manual formula of changing of tearing open, then need dismantle the mould during the use, there is the problem that reduces production efficiency, increases the industrial injury risk.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a movable punching head subassembly and cold punching die.

The utility model adopts the technical proposal that:

a movable punch component comprises a cushion block, a fixed block, a movable cushion block, a cylinder, two linear springs and two punches;

the fixed block is fixedly installed on the top surface of the cushion block through a screw, a U-shaped through groove is formed in the bottom surface of the fixed block along the length direction of the fixed block, the movable cushion block is slidably arranged in the U-shaped through groove, a first horizontal top surface and a second horizontal top surface are arranged on the top surface of the movable cushion block, the air cylinder is arranged on the side surface of the fixed block, the piston rod of the air cylinder extends into the U-shaped through groove to be connected with the movable cushion block, and the first horizontal top surface is close to the air cylinder and is lower than the second horizontal top surface in height;

a first through hole and a second through hole which are communicated with the U-shaped through groove are respectively formed in the fixed block along the height direction of the fixed block, and the two linear springs and the two punches are respectively arranged in the first through hole and the second through hole; the lower ends of the two punches respectively penetrate through the two linear springs to be movably connected with the first horizontal top surface and the second horizontal top surface of the movable cushion block, and the linear springs are used for resetting the punches.

Furthermore, the first horizontal top surface and the second horizontal top surface are connected through a first inclined surface, and one side, far away from the first horizontal top surface, of the second horizontal top surface is connected with a second inclined surface.

Furthermore, the lower end surfaces of the two punches are provided with two inclined bottom surfaces matched with the first inclined surface and the second inclined surface.

Further, still include installation piece and installation key piece, the installation piece is through installation key piece and screw detachably fixed connection cushion, and the installation piece is used for the upper die base of fixed connection cold punching mould.

A cold punching die is characterized in that an upper die base is fixedly connected with any one movable punch head assembly.

The utility model has the advantages that:

1. the utility model is used for the stamping modeling is the same, during the auto parts of only the hole site difference, can avoid making two sets of mould frocks, reduces the cost of manufacture of mould frocks.

2. Use the utility model discloses when punching a hole and switching, just can accomplish through the control air supply, avoid installing and removing the mould, improve work efficiency, reduce mould use cost.

Drawings

Fig. 1 is a schematic structural view of the movable punch assembly of the present invention.

Fig. 2 is a schematic structural view of the movable cushion block 5 of the movable punch assembly of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and a preferred embodiment.

Referring to fig. 1 and 2, the present embodiment provides a movable punch assembly, which includes a mounting block 1, a mounting key block 2, a cushion block 3, a fixed block 4, a movable cushion block 5, a cylinder 7, two linear springs 8, and two punches 9.

Installation piece 1 and cushion 3 all are equipped with the recess of 2 fast adaptations with the installation key in installation piece 1 and the cushion 3 through the detachable fixed connection of screw, and the installation key is fast 2 locates in the recess of installation piece 1 and cushion 3 for installation piece 1 is connected with the location of cushion 3, and then the position of punching a hole of two drifts 9 of accurate positioning.

The fixed block 4 is fixedly arranged on the top surface of the cushion block 3 through a screw, the air cylinder 7 is fixedly arranged on the left side surface of the fixed block 4 through a screw, a U-shaped through groove is formed in the bottom surface of the fixed block 4 along the length direction of the bottom surface, the movable cushion block 5 is slidably arranged in the U-shaped through groove, a first horizontal top surface 51 and a second horizontal top surface 52 are arranged on the top surface of the movable cushion block 5, and the first horizontal top surface 51 is close to the air cylinder 7 and is lower than the second horizontal top surface in height; the first horizontal top surface 51 is connected with the second horizontal top surface 52 through a first inclined surface 53, and a second inclined surface 54 is connected with one side of the second horizontal top surface 52 far away from the first horizontal top surface 51; the top surface of the left end of the movable cushion block 5 protrudes upwards to form a connecting part, and the connecting part is provided with a through hole 55 for connecting the cylinder piston rod 6. The cylinder piston rod 6 extends into the U-shaped through groove and is arranged in the through hole 55 in a penetrating mode.

A first through hole 41 and a second through hole 41 which are communicated with the U-shaped through groove are respectively formed in the fixing block 4 along the height direction of the fixing block, and the two linear springs 8 and the two punches 9 are respectively arranged in the first through hole 41 and the second through hole 42; the heads of the two punches 9 respectively penetrate through the two linear springs 8 to be movably connected with a first horizontal top surface 51 and a second horizontal top surface 52 of the movable cushion block 5, the lower ends of the first through hole 41 and the second through hole 41 both protrude outwards in the radial direction to form spring mounting holes, the linear springs 8 are mounted in the spring mounting holes, the upper ends of the linear springs 8 abut against the top surfaces of the spring mounting holes, and the lower ends of the linear springs 8 abut against the heads of the punches 9.

The thickness and density of the linear spring 8 are unchanged from top to bottom, the elastic coefficient is a fixed value, and the precision of the punch 9 in drilling is ensured.

Preferably, the end surfaces of the heads of the two punches 9 are provided with two inclined surfaces matched with the first inclined surface 53 and the second inclined surface 54, so that the movable cushion block 5 can move conveniently.

In an initial state, the cylinder piston rod 6 extends, the head of the punch 9 in the first through hole 41 passes through the linear spring 8 and abuts against the first horizontal top surface 51, the head of the punch 9 in the second through hole 42 passes through the linear spring 8 and abuts against the second horizontal top surface 52, at this time, the linear spring 8 in the first through hole 41 is not stressed, the linear spring 8 in the second through hole 42 is compressed, the punch 9 in the second through hole 42 is higher than the punch 9 in the first through hole 41, and the punch 9 in the second through hole 42 is in a drilling state.

When the punching position needs to be switched, the air cylinder 7 is connected with an air source, the air cylinder piston rod 6 retracts to drive the movable cushion block 5 to move leftwards in the U-shaped through groove of the fixed block 4, and the head part of the punch 9 in the first through hole 41 slides to the second horizontal top surface 52 along the first inclined surface 53; the head of the punch 9 in the second through hole 42 slides along the second slope 54 to the bottom of the second slope 54; at this time, the linear spring 8 in the first through hole 41 is compressed, the linear spring 8 in the second through hole 42 is restored to the initial state, the punch 9 in the first through hole 41 is higher than the punch 9 in the second through hole 42, and the punch 9 in the first through hole 42 is in the drilling state.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various modifications and embellishments without departing from the principle of the present invention, and these modifications and embellishments are also within the scope of the present invention.

Claims

1. A movable punch head assembly is characterized by comprising a cushion block (3), a fixed block (4), a movable cushion block (5), a cylinder (7), two linear springs (8) and two punches (9);

the fixed block (4) is fixedly installed on the top surface of the cushion block (3) through a screw, a U-shaped through groove is formed in the bottom surface of the fixed block (4) along the length direction of the fixed block, the movable cushion block (5) is slidably arranged in the U-shaped through groove, a first horizontal top surface and a second horizontal top surface are arranged on the top surface of the movable cushion block (5), the air cylinder (7) is arranged on the side surface of the fixed block (4), the air cylinder piston rod (6) extends into the U-shaped through groove to be connected with the movable cushion block (5), and the first horizontal top surface is close to the air cylinder (7) and is lower than the second horizontal top surface in height;

a first through hole and a second through hole which are communicated with the U-shaped through groove are respectively formed in the fixing block (4) along the height direction of the fixing block, and the two linear springs (8) and the two punches (9) are respectively arranged in the first through hole and the second through hole; the lower ends of the two punches (9) respectively penetrate through the two linear springs (8) to be movably connected with the first horizontal top surface and the second horizontal top surface of the movable cushion block (5), and the linear springs (8) are used for resetting the punches (9).

2. The movable punch assembly of claim 1, wherein the first top horizontal surface and the second top horizontal surface are connected by a first sloped surface, and a second sloped surface is connected to a side of the second top horizontal surface remote from the first top horizontal surface.

3. An assembly of movable punches according to claim 2, characterized in that the lower end faces of both punches (9) are provided with two inclined bottom faces adapted to the first and second inclined faces.

4. The movable punch assembly of claim 1, further comprising a mounting block (1) and a mounting key block (2), wherein the mounting block (1) is detachably and fixedly connected with the cushion block (3) through the mounting key block (2) and a screw, and the mounting block (1) is used for fixedly connecting with an upper die holder of a cold-punching die.

5. A cold punching die, characterized in that the upper die base is fixedly connected with a movable punch assembly as claimed in any one of claims 1 to 4.