CN112605262A

CN112605262A - Prevent corner bending fracture mould

Info

Publication number: CN112605262A
Application number: CN202011351938.XA
Authority: CN
Inventors: 徐党新; 张亮; 康世杰; 杨加军; 黄杰; 李桂勤
Original assignee: Liande Precision Materials China Co ltd
Current assignee: Liande Precision Materials China Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-04-06

Abstract

The invention provides an anti-corner bending and cracking die which can meet the requirement of the height of a product wrapping edge without influencing the strength of the product. The device comprises an upper die part and a lower die part, wherein the upper die part comprises an upper die base, a clamping plate, a large stripping plate, a forming slotting tool and an upper die pressing block, the clamping plate is arranged on the lower surface of the upper die base, a first nitrogen spring is fixedly arranged on the upper die base, the lower end of the first nitrogen spring penetrates through the clamping plate and then is connected with an upper mounting groove of the large stripping plate, and the lower surface of the large stripping plate is fixedly provided with the forming slotting tool protruding downwards and the upper die pressing block protruding downwards respectively; the lower die part comprises a lower die seat and a pad foot, the lower die seat is fixedly arranged on the upper surface of the pad foot, an inner groove is formed in the whole surface area of the lower die seat and the pad foot corresponding to the area of the forming slotting tool and the upper die pressing-in block, and a slotting tool rest, a wear-resistant fixed block, a driving block and a punch wear-resistant guide plate are arranged in the inner groove.

Description

Prevent corner bending fracture mould

Technical Field

The invention relates to the technical field of product bending, in particular to an anti-corner bending cracking die.

Background

For products with material thickness larger than 2.0mm and 90-degree bending and edge covering, the products are easy to crack and difficult to form when being produced by the existing processing die. The existing processing method is to require a client to reduce the height of the edge covering on the bending edge to be less than twice the material thickness, open the angle of the edge covering after the height is reduced, and then meet the requirement of the client by using a shaping method.

Disclosure of Invention

Aiming at the problems, the invention provides an anti-corner bending and cracking die which can meet the requirement of the product edge covering height without affecting the strength of the product, reduce the floating height of the product, improve the production speed, reduce the risk of poor cracking and the inspection of the problem, and effectively reduce the die repairing times and the production cost.

Prevent turning angle bending fracture mould, its characterized in that: the device comprises an upper die part and a lower die part, wherein the upper die part comprises an upper die base, a clamping plate, a large stripping plate, a forming slotting tool and an upper die pressing block, the clamping plate is arranged on the lower surface of the upper die base, a first nitrogen spring is fixedly arranged on the upper die base, the lower end of the first nitrogen spring penetrates through the clamping plate and then is connected with an upper mounting groove of the large stripping plate, and the lower surface of the large stripping plate is fixedly provided with the forming slotting tool protruding downwards and the upper die pressing block protruding downwards respectively;

the lower die part comprises a lower die seat and a pad foot, the lower die seat is fixedly arranged on the upper surface of the pad foot, the whole surface area of the lower die seat and the pad foot is provided with an inner groove corresponding to the area of a forming slotting tool and an upper die pressing block, a slotting tool rest, a wear-resistant fixed block, a driving block and a punch wear-resistant guide plate are arranged in the inner groove, a guide surface of the rest slotting tool rest is correspondingly arranged corresponding to the outer side guide straight surface of the forming slotting tool, the lower part of one side of the forming slotting tool, which is far away from the slotting tool rest, is provided with a first guide oblique angle, the driving block is arranged under the forming slotting tool in a die opening state, the end surface of the driving block, which faces the first guide oblique angle of the forming slotting tool rest, is vertically inserted into the gap of the driving block, which faces the slotting tool rest, through the second guide oblique angle, the bottom of the driving block is provided with a guide downward projection, the lower guide boss is correspondingly provided with a transverse reset mandril and a transverse reset spring, one side of the driving block, which is far away from the upper surface of the slotting tool close to the cutter, is provided with a third guide oblique angle, the fourth guide oblique angle of the forming punch is supported on the third guide oblique angle and is arranged, the upper part of the forming punch is provided with a lower die guide plate, the lower die guide plate is fixedly arranged on the corresponding upper surface of the lower die base, the lower die guide plate is provided with a through guide hole corresponding to the position of the forming punch, at least one part of the upper part of the forming punch is embedded in the through guide hole and is arranged, the upper surface of the forming punch is embedded with a lower die pressing block, the bottom of the lower die pressing block is provided with a corresponding vertical reset mandril and a lower die pressing second nitrogen spring, and the lower die pressing second nitrogen spring and the vertical reset mandril are arranged outside the width surface area, the bottom of the forming punch is fixedly connected with an equal-height screw, a third vertical return spring is sleeved on the part of the equal-height screw, which protrudes downwards to the pad foot, and the equal-height screw is arranged to avoid the driving block;

and in the die closing state, the cavity formed by the upper die pressing inlet block and the lower die pressing inlet block bends and presses the product to be formed.

It is further characterized in that:

the transverse return spring is arranged in a spring mounting cavity of the limiting inlet block, the stopping end surface of the limiting inlet block is used for stopping the transverse displacement of the limiting guide lower protrusion, and the bottom moving plane of the driving block is supported on the upper surface of the limiting inlet block and arranged in a translational sliding manner;

a stripping ejector rod is arranged in the upper die pressing block, a stripping spring is arranged at the upper part of the stripping ejector rod, and the stripping ejector rod enables the upper die pressing block to be separated from a product under the action of the stripping spring in a demolding state;

a nitrogen spring protection box is arranged at the bottom of the lower die material pressing second nitrogen spring corresponding to the mounting position of the pad;

the part of the lower surface of the lower stripper plate, which faces the lower die guide plate, is provided with a guide punch structure, particularly a positioning needle, so that accurate and reliable positioning is ensured.

After the invention is adopted, a product is placed on the lower die pressing material inlet block and positioning is completed, the large stripping plate drives the forming slotting tool to move downwards, before the upper die pressing material inlet block and the lower die pressing material inlet block are pressed to be dead, the forming slotting tool pushes the driving block to the punch wear-resistant guide plate, at the moment, the forming punch starts to move upwards (the movement is completed under the action of each guide angle), and the transverse reset ejector rod starts to compress the transverse reset spring; at the moment, the upper die continues to move downwards, when the forming slotting tool moves to a position where the straight edge is parallel to the straight edge of the driving block, the driving block stops moving horizontally, the forming punch moves in place, when the forming punch moves in place, the equal-height screws enable the third vertical return spring to be in a compressed state, after the process is finished, the upper die pressing material inlet block and the lower die pressing material inlet block clamp the product under the action of the first nitrogen spring and the lower die pressing material second nitrogen spring, the product moves downwards and is bent to be formed, at the moment, the two nitrogen springs are in a compressed state, and the die is located at the bottom dead center of the punch press until the forming of the product is finished; after the molding is finished, the mold is opened, the clamping plate is firstly opened, the first nitrogen spring is opened at the moment, the large stripping plate is continuously opened, the product is supported by the lower mold pressing block under the action of the lower mold pressing material second nitrogen spring and moves upwards together, the lower mold pressing material second nitrogen spring is restored to the initial state, the lower mold pressing material second nitrogen spring drives the block to start to reset under the action of the transverse reset spring and the transverse reset ejector rod, the molding punch also starts to reset under the action of the equal-height screw and the reset spring while the driving block resets, and when the molding slotting tool and the driving block are completely separated, the reset stroke of the molding punch is also finished; the height of the floating material of the product is reduced by resetting the forming punch; the requirement of the product for the edge covering height can be met, the strength of the product is not affected, the floating height of the product is reduced, the production speed is increased, the risk of poor cracking and the inspection of the product are reduced, and the die repairing times and the production cost are effectively reduced.

Drawings

FIG. 1 is a structural sectional view of the present invention in an open mold state;

FIG. 2 is a first structural sectional view of the present invention in a mold closed state;

FIG. 3 is a sectional view of a second cross-sectional structure of the present invention in a mold closed state;

FIG. 4 is a cross-sectional view of a third deck structure of the present invention in a closed mold position;

FIG. 5 is a schematic view of a formed product;

the names corresponding to the sequence numbers in the figure are as follows:

upper and lower die

portions

100 and 200

The device comprises an upper die holder 1, a clamping plate 2, a large stripping plate 3, a forming slotting tool 4, a first guide bevel 41, a slotting tool rest 5, a wear-resistant fixing block 6, a limiting insert block 7, a pad 8, a first nitrogen spring 9, an upper die press-in block 10, a forming punch 11, a fourth guide bevel 111, a lower die guide plate 12, a punch wear-resistant guide plate 13, a driving block 14, a second guide bevel 141, a guide lower boss 142, a third guide bevel 143, a transverse reset spring 15, a transverse reset ejector rod 16, a stripping spring 17, a stripping ejector rod 18, a guide punch structure 19, a lower die pressing insert block 20, a vertical reset ejector rod 21, a lower die pressing second nitrogen spring 22, a nitrogen spring protection box 23, a product 24, a lower die holder 25, an equal-height screw 26 and a third vertical reset spring 27.

Detailed Description

The anti-rotation angle bending cracking die is shown in the figures 1-5: the mold comprises an upper mold part 100 and a lower mold part 200, wherein the upper mold part 100 comprises an upper mold base 1, a clamping plate 2, a large stripping plate 3, a forming slotting tool 4 and an upper mold pressing block 10, the clamping plate 2 is arranged on the lower surface of the upper mold base 1, a first nitrogen spring 9 is fixedly arranged on the upper mold base 1, the lower end of the first nitrogen spring 9 penetrates through the clamping plate 2 and then is connected with an upper mounting groove of the large stripping plate 3, and the lower surface of the large stripping plate 3 is fixedly provided with the forming slotting tool 4 with a downward convex and the upper mold pressing block 10 with a downward convex respectively;

the lower die part 200 comprises a lower die seat 25 and a pad 8, the lower die seat 25 is fixedly arranged on the upper surface of the pad 8, the whole surface area of the lower die seat 25 and the pad 8 is provided with an inner groove corresponding to the area of a forming slotting tool 4 and an upper die pressing block 10, a slotting tool rest 5, a wear-resistant fixed block 6, a driving block 14 and a punch wear-resistant guide plate 13 are arranged in the inner groove, the guide surface of the knife rest 5 is correspondingly arranged corresponding to the outer side guide straight surface of the forming slotting tool 4, the lower part of one side of the forming slotting tool 4 far away from the knife rest 5 is provided with a first guide oblique angle 41, the driving block 14 is arranged right below the forming slotting tool 4 in a die opening state, the end surface of the first guide oblique angle 41 of the driving block 14 facing the forming slotting tool 4 is provided with a second guide oblique angle 141, the first guide oblique angle 41 is vertically inserted into the gap of the driving block 14 facing the slotting tool rest 5 through the second guide oblique angle 141, the bottom of the driving block 14 is provided with a guide, a transverse reset mandril 16 and a transverse reset spring 15 are correspondingly arranged on the lower guide boss 142, a third guide bevel 143 is arranged on one side of the driving block 14 far away from the upper surface of the slotting tool close to the knife 5, a fourth guide bevel 111 of the forming punch 11 is supported on the third guide bevel 143, a lower die guide plate 12 is arranged on the upper part of the forming punch 11, the lower die guide plate 12 is fixedly arranged on the corresponding upper surface of the lower die base 25, a through guide hole is arranged at the position of the lower die guide plate 12 corresponding to the forming punch 11, at least one part of the upper part of the forming punch 11 is embedded in the through guide hole for arrangement, a lower die pressing material inlet block 20 is embedded on the upper surface of the forming punch 11, a corresponding vertical reset mandril 21 and a lower die pressing material second nitrogen spring 22 are arranged at the bottom of the lower die pressing material inlet block 20, the lower die pressing material second nitrogen spring 22 and the vertical reset mandril 21 are arranged outside, the bottom of the forming punch 11 is fixedly connected with an equal-height screw 26, a third vertical return spring 27 is sleeved on the part of the equal-height screw 26, which protrudes downwards to the pad 8, and the equal-height screw 26 is arranged to avoid the driving block 14;

and in a matched die state, a cavity formed by the upper die pressing block 10 and the lower die pressing block 20 bends and presses the product 24 for forming.

The transverse return spring 15 is arranged in a spring mounting cavity of the limit inlet block 7, the stop end face of the limit inlet block 7 is used for stopping the transverse movement amount of the limit guide lower boss 142, and the bottom moving plane of the driving block 14 is supported on the upper surface of the limit inlet block 7 and is arranged in a translational sliding manner;

a stripping ejector rod 18 is arranged in the upper die pressing block 10, a stripping spring 17 is arranged at the upper part of the stripping ejector rod 18, and the stripping ejector rod 18 enables the upper die pressing block 10 to be separated from a product under the action of the stripping spring 17 in a demoulding state;

a nitrogen spring protection box 23 is arranged at the bottom of the lower die material pressing second nitrogen spring 22 corresponding to the mounting position of the pad foot 8;

the part of the lower surface of the lower stripper plate 3 facing the lower die guide plate 12 is provided with a guiding punch structure 19, in particular a positioning pin, ensuring accurate and reliable positioning.

The working principle is as follows: the product is placed on the lower die pressing material inlet block, positioning is completed, the large stripping plate drives the forming slotting tool to move downwards, before the upper die pressing material inlet block and the lower die pressing material inlet block are pressed to be dead, the forming slotting tool pushes the driving block to the punch wear-resistant guide plate, at the moment, the forming punch starts to move upwards (the movement is completed under the action of each guide angle), and the transverse reset ejector rod starts to compress the transverse reset spring; at the moment, the upper die continues to move downwards, when the forming slotting tool moves to a position where the straight edge is parallel to the straight edge of the driving block, the driving block stops moving horizontally, the forming punch moves in place, when the forming punch moves in place, the equal-height screws enable the third vertical return spring to be in a compressed state, after the process is finished, the upper die pressing material inlet block and the lower die pressing material inlet block clamp the product under the action of the first nitrogen spring and the lower die pressing material second nitrogen spring, the product moves downwards and is bent to be formed, at the moment, the two nitrogen springs are in a compressed state, and the die is located at the bottom dead center of the punch press until the forming of the product is finished; after the molding is finished, the mold is opened, the clamping plate is firstly opened, the first nitrogen spring is opened at the moment, the large stripping plate is continuously opened, the product is supported by the lower mold pressing block under the action of the lower mold pressing material second nitrogen spring and moves upwards together, the lower mold pressing material second nitrogen spring is restored to the initial state, the lower mold pressing material second nitrogen spring drives the block to start to reset under the action of the transverse reset spring and the transverse reset ejector rod, the molding punch also starts to reset under the action of the equal-height screw and the reset spring while the driving block resets, and when the molding slotting tool and the driving block are completely separated, the reset stroke of the molding punch is also finished; the height of the floating material of the product is reduced by resetting the forming punch; the requirement of the product for the edge covering height can be met, the strength of the product is not affected, the floating height of the product is reduced, the production speed is increased, the risk of poor cracking and the inspection of the product are reduced, and the die repairing times and the production cost are effectively reduced.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Prevent turning angle bending fracture mould, its characterized in that: the device comprises an upper die part and a lower die part, wherein the upper die part comprises an upper die base, a clamping plate, a large stripping plate, a forming slotting tool and an upper die pressing block, the clamping plate is arranged on the lower surface of the upper die base, a first nitrogen spring is fixedly arranged on the upper die base, the lower end of the first nitrogen spring penetrates through the clamping plate and then is connected with an upper mounting groove of the large stripping plate, and the lower surface of the large stripping plate is fixedly provided with the forming slotting tool protruding downwards and the upper die pressing block protruding downwards respectively;

2. The anti-corner bending cracking die according to claim 1, wherein: the transverse reset spring is arranged in the spring mounting cavity of the limiting inlet block, the stop end face of the limiting inlet block is used for stopping the transverse displacement of the limiting guide lower projection, and the bottom moving plane of the driving block is supported on the upper surface of the limiting inlet block and arranged in a sliding manner in a translation manner.

3. The anti-corner bending cracking die according to claim 1, wherein: the upper die pressing block is internally provided with a stripping ejector rod, the upper part of the stripping ejector rod is provided with a stripping spring, and the stripping ejector rod enables the upper die pressing block to be separated from a product under the action of the stripping spring in a demolding state.

4. The anti-corner bending cracking die according to claim 1, wherein: and a nitrogen spring protection box is arranged at the bottom of the lower die material pressing second nitrogen spring corresponding to the mounting position of the pad foot.

5. The anti-corner bending cracking die according to claim 1, wherein: and a part of the lower surface of the lower stripper plate, which faces the lower die guide plate, is provided with a guide punch structure.