CN205798168U - For processing the bending die of Z-shaped support - Google Patents

Abstract

The utility model discloses a bending die for processing a Z-shaped bracket, which comprises an upper die and a lower die; the upper die includes an upper die base, a handle and a bending punch; the lower die includes a lower die base and a bending die; The feature is that the lower mold also includes an elastic top piece device, which includes a pull rod, a supporting plate, elastic rubber, a push rod screw and a top piece block; the upper end of the pull rod is fixed on the lower surface of the lower mold base; the supporting plate is a clamp On the upper and lower surfaces of the elastic rubber, the supporting plate and the elastic rubber are slidingly sleeved on the pull rod; the lower end of the ejector rod screw is fixedly connected with the supporting plate, and the upper end slides through the lower mold base and is fixedly connected with the lower surface of the ejector block; The lower surface of the piece block is in contact with the lower mold base when the bending process is completed, and the upper surface of the top piece block is lower than the upper surface of the bending die as a whole and together with the bending die form a Z-shaped processing shape that matches the bending punch. cavity. The bending die of the utility model has the advantages of easy manufacture and low cost, and can also improve the efficiency of taking out the Z-shaped bracket.

Description

Bending dies for machining Z-shaped brackets

technical field

The utility model belongs to the field of stamping dies for processing brackets, in particular to a bending die for processing Z-shaped brackets.

Background technique

Stamping refers to a pressure processing method that uses a mold installed on a press to apply pressure to a material to cause separation or plastic deformation to obtain the required parts. The Z-shaped bracket is a commonly used part in the field of mechanical engineering manufacturing, and it is usually made by stamping process.

The patent in the prior art with the notification number: CN204842680U discloses a compound bending die of a Z-shaped bracket (disclosure date: 2015.12.09), the bending die includes a punch and a die, and the punch is fixedly connected to the upper template The bottom surface of the die; the die includes a lower template and a mold frame arranged on the top surface of the lower template, the mold frame is provided with a top piece device, and the top piece device is provided with a slot for inserting a workpiece to be processed. The ejector rod that drives the ejector to move up and down in the mold frame is also installed on the lower template.

But the composite bending die of above-mentioned Z-shaped support still has deficiency:

After the bending process is completed, the ejector rod needs to be operated separately to drive the ejector to rise, so that the processed zigzag support can be taken out. It can be seen that the operation of taking out the zigzag support is still comparatively cumbersome.

Based on this, the applicant considers designing a bending die that can improve the extraction efficiency of the Z-shaped bracket.

Utility model content

In view of the deficiencies of the prior art above, the technical problem to be solved by the utility model is: how to provide a bending die for processing Z-shaped brackets that can improve the extraction efficiency of Z-shaped brackets.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

Bending mold for processing Z-shaped bracket, including upper mold part and lower mold part;

The upper mold part includes an upper mold base, a mold handle and a bending punch, the middle part of the upper surface of the upper mold base is fixedly equipped with the mold handle, and the lower surface of the upper mold base is fixedly installed with the bending punch ;

The lower mold part includes a lower mold base and a bending die, the lower mold base is located directly below the upper mold base as a whole, and the bending die is fixedly installed on the upper surface of the lower mold base; it is characterized in that : the lower mold part also includes an elastic ejector device, which includes a pull bar, a supporting plate, elastic rubber, an ejector screw and an ejector block; wherein,

The upper end of the pull rod is fixed on the lower surface of the lower mold base, and the lower end is a limit end;

The supporting plate is two pieces clamped on the upper and lower surfaces of the elastic rubber, and the supporting plate and the elastic rubber are jointly slidably socketed on the pull rod;

The lower end of the ejector screw is fixedly connected to the supporting plate located on the upper surface of the elastic rubber, and the upper end slides through the lower mold base and is fixedly connected with the lower surface of the ejector block located above the lower mold base;

There is a sliding fit between the side of the top block adjacent to the bending die and the bending die, and the lower surface of the top block is in contact with the lower mold base when the bending work is completed. The upper surface of the block is at the same height as the upper surface of the bending die when it is not working, and together with the bending die, it forms a Z-shaped processing cavity that is matched with the bending punch.

In the above-mentioned bending die for processing the Z-shaped bracket, the ejector block can rise to be flush with the top surface of the bending die under the elastic force of the elastic rubber. When using:

First, place the blanking piece on the plane formed by the top surface of the bending die and the top surface of the pusher block.

Then, the upper mold goes down, and the part of the blanking piece that is pressed between the bending punch and the top block is gradually pressed down, and the part of the blanking piece that is not pressed slides and bends along the bending die, and enters the punch and the die. The gap between them; the bending punch cooperates with the bending die and the top piece to complete the bending of the Z-shaped bracket.

Finally, after the bending and forming of the Z-shaped bracket is completed, while the punch is moving upwards, under the action of the elastic force of the elastic rubber, the ejector screw automatically moves up the top piece to push out the Z-shaped bracket, so that the removal of the Z-shaped bracket is easier. It is convenient and improves the efficiency of taking out the Z-shaped bracket.

In addition, the adoption of the above-mentioned elastic ejector device not only works reliably, but also allows the elastic rubber to be replaced very conveniently, making it easier to adjust the ejector force, thereby better adapting to the processing requirements of different workpieces.

As an improvement, the lower mold part further includes a thrust block, and the thrust block is integrally and fixedly installed on the side of the lower mold base away from the bending die; the ejector block is adjacent to the thrust block It is a sliding fit between the side of the thrust block and the thrust block.

The setting of the thrust block can overcome the dislocation force in the horizontal direction between the bending convex and concave dies, and at the same time guide the ejector block to prevent it from moving.

As an improvement, a positioning pin is provided on the upper surface of the ejector block, and a positioning hole corresponding to the positioning pin and capable of falling into the positioning pin is provided on the bending punch.

The above-mentioned positioning pins are used to penetrate through the pre-processed through holes on the blanking parts, so as to position the blanking parts, and preferably the positioning pins are at least 2 corresponding to the through holes on the blanking parts. In this way, Put the blanking part on the plane formed by the top surface of the bending die and the top surface of the pusher block, that is, the positioning of the blanking part can be realized by two positioning pins, and the blanking part is pressed between the bending punch and the ejector block. , it cannot be moved, and there will be no quality problems such as offsets that cause processing errors.

Preferably, the jack screw is a plurality of screws uniformly arranged in the circumferential direction of the tie rod.

The structure of multiple ram screws has better vertical guiding and supporting effects.

Preferably, a spacer is further provided between the upper die base and the bending punch, and the spacer and the bending punch are fixedly connected to the upper die base through cylindrical pins and countersunk screws.

The arrangement of the cushion block can effectively reduce the wear degree of the contact surface between the bending punch and the upper die base, and play a certain role of buffering and protection.

As an improvement, a guide sleeve is fixed vertically on the lower surface of the upper mold base around the bending punch, and a guide post is fixedly installed on the upper surface of the lower mold base to match the guide sleeve.

The arrangement of the above-mentioned guide sleeve and guide post can better ensure the motion accuracy of the relative movement between the upper and lower mold bases, thereby better ensuring the accuracy of the bending process.

The bending die used for processing the Z-shaped bracket of the utility model is a single-process mold, which not only has the advantages of easy manufacture and low cost, but also can improve the efficiency of taking out the Z-shaped bracket.

Description of drawings

Fig. 1 is the assembly drawing (top view direction) of the bending die that the utility model is used for processing Z-shaped support.

Fig. 2 is a sectional view of A-A in Fig. 1 .

Labeled in the figure:

1 mold handle, 2 countersunk head screw, 3 upper mold base, 4 guide column, 5 bending die, 6 countersunk screw, 7 lower mold base, 8 tie rod, 9 elastic rubber, 10 supporting plate, 11, 19 cylindrical pin, 12 ejector rod screws, 13 ejector blocks, 14 positioning pins, 15 thrust blocks, 16 bending punches, 17 guide sleeves, and 18 pads.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail. Wherein, the descriptive terms such as up, down, left, right, etc. are used for the description, with the purpose of helping readers to understand, but not intended to limit.

As shown in Figures 1 to 2, the bending die for processing the Z-shaped bracket includes an upper die part and a lower die part;

The upper mold part includes an upper mold base 3, a mold handle 1 and a bending punch 16, the middle part of the upper surface of the upper mold base 3 is fixedly equipped with the mold handle 1, and the lower surface of the upper mold base 3 is fixedly installed There is said bending punch 16;

The lower die part includes a lower die base 7 and a bending die 5, the lower die base 7 is located directly below the upper die base 3 as a whole, and the bending die 5 is fixedly mounted on the bottom of the lower die base 7 The upper surface; the lower mold part also includes an elastic top piece device, which includes a pull rod 8, a supporting plate 10, an elastic rubber 9, a top rod screw 12 and a top piece block 13; wherein,

The upper end of the pull rod 8 is fixed on the lower surface of the lower mold base 7, and the lower end is a limit end;

The supporting plate 10 is two pieces clamped on the upper and lower surfaces of the elastic rubber 9, and the supporting plate 10 and the elastic rubber 9 are jointly slidably socketed on the pull rod 8;

The lower end of the ejector rod screw 12 is fixedly connected to the supporting plate 10 on the upper surface of the elastic rubber 9 , and the upper end slides through the lower die base 7 and is fixed to the lower surface of the ejector block 13 above the lower die base 7 connected;

The side of the top block 13 adjacent to the bending die 5 is a sliding fit with the bending die 5, and the lower surface of the top block 13 is in contact with the lower mold base 7 when the bending work is completed. In contact, the upper surface of the ejector block 13 is at the same height as the upper surface of the bending die 5 when not in operation and together with the bending die 5 constitutes a Z-shaped processing cavity matched with the bending punch 16 .

During implementation, preferably the bending die 5 and the thrust block 15 are positioned and connected to the lower mold base 7 through the cylindrical pin 11 and the countersunk screw 6 respectively.

Wherein, the lower mold part also includes a thrust block 15, and the thrust block 15 is integrally fixedly installed on the side of the lower mold base 7 away from the bending die 5; The adjacent side surfaces of the thrust block 15 and the thrust block 15 are in a sliding fit.

Wherein, the upper surface of the top block 13 is provided with a positioning pin 14 , and the bending punch 16 has a positioning hole corresponding to the positioning pin 14 and capable of falling into the positioning pin 14 .

Wherein, the jack screws 12 are multiple evenly arranged in the circumferential direction of the pull rod 8 .

Wherein, a cushion block is also arranged between the upper die base 3 and the bending punch 16, and the pad 18 and the bending punch 16 are fixedly connected to the upper die base 3 through a cylindrical pin 19 and a countersunk screw 2 .

Wherein, a guide sleeve 17 is fixed vertically on the lower surface of the upper mold base 3 around the bending punch 16, and a guide sleeve 17 is fixedly installed on the upper surface of the lower mold base 7 to match the guide sleeve 17. guide post 4.

When the above-mentioned bending die is in use, firstly, the blanking part is placed on the plane formed by the top surface of the bending die 5 and the top surface of the pusher block, and the positioning of the workpiece is realized by two positioning pins 14 . Then the upper mold goes down, the workpiece is pressed between the bending punch 16 and the top block 13 and gradually descends, the unpressed material at both ends of the workpiece slides and bends along the die, and enters the gap between the punch and the die; The bending die 5, the ejector block 13 and the thrust block 15 complete the zigzag bending of the workpiece. After the bending forming is completed, when the punch goes up, the ejector block 13 pushes the workpiece out of the bending die 5 through the elastic rubber 9 and the ejector rod screw 12 .

The above are only the preferred embodiments of the present utility model. It should be pointed out that those skilled in the art can also make some deformations and improvements without departing from the technical solution. The above-mentioned deformations and improved technical solutions should be regarded as falling Into the scope of protection claimed by this application.

Claims (6)

1. The bending die for processing the Z-shaped bracket comprises an upper die part and a lower die part;

the upper die part comprises an upper die holder, a die handle and a bending male die, the die handle is fixedly mounted in the middle of the upper surface of the upper die holder, and the bending male die is fixedly mounted on the lower surface of the upper die holder;

the lower die part comprises a lower die base and a bending female die, the lower die base is integrally positioned right below the upper die base, and the bending female die is fixedly arranged on the upper surface of the lower die base; the method is characterized in that: the lower die part also comprises an elastic ejecting device, and the elastic ejecting device comprises a pull rod, a supporting plate, elastic rubber, an ejector rod screw and an ejecting block; wherein,

the upper end of the pull rod is fixed on the lower surface of the lower die base, and the lower end of the pull rod is a limiting end;

the supporting plates are two blocks which are clamped on the upper surface and the lower surface of the elastic rubber, and the supporting plates and the elastic rubber are jointly sleeved on the pull rod in a sliding manner;

the lower end of the ejector rod screw is fixedly connected with a supporting plate positioned on the upper surface of the elastic rubber, and the upper end of the ejector rod screw penetrates through the lower die base in a sliding manner and is fixedly connected with the lower surface of the ejector piece block positioned above the lower die base;

the side face of the ejector block adjacent to the bending female die is in sliding fit with the bending female die, the lower surface of the ejector block is in contact with the lower die holder when the bending work is finished, the upper surface of the ejector block is equal in height to the upper surface of the bending female die when the ejector block does not work, and the ejector block and the bending female die together form a Z-shaped processing cavity matched with the bending male die.

2. The bending die according to claim 1, wherein: the lower die part also comprises a thrust block, and the thrust block is integrally and fixedly arranged on one side of the lower die seat far away from the bending female die; the side surfaces of the top piece block adjacent to the thrust block are in sliding fit with the thrust block.

3. The bending die according to claim 1, wherein: the upper surface of the ejector piece block is provided with a positioning pin, and the bending male die is provided with a positioning hole which corresponds to the positioning pin and can allow the positioning pin to fall into.

4. The bending die according to claim 1, wherein: the ejector rod screws are uniformly arranged in the circumferential direction of the pull rod.

5. The bending die according to claim 1, wherein: and a cushion block is also arranged between the upper die base and the bending male die, and the cushion block and the bending male die are fixedly connected with the upper die base through a cylindrical pin and a countersunk head screw.

6. The bending die according to claim 1, wherein: a guide sleeve is vertically and fixedly arranged on the lower surface of the upper die base at the periphery of the bending male die, and a guide pillar matched with the guide sleeve is fixedly arranged on the upper surface of the lower die base.