CN113118255A

CN113118255A - Bending forming die

Info

Publication number: CN113118255A
Application number: CN202110266300.4A
Authority: CN
Inventors: 吴明
Original assignee: Dongguan Xinmeiyang Technology Co ltd
Current assignee: Dongguan Xinmeiyang Technology Co ltd; Ningde Changying New Energy Technology Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-07-16
Anticipated expiration: 2041-03-11
Also published as: CN113118255B

Abstract

The invention provides a bending forming die which comprises an upper die and a lower die which are matched with each other, wherein the upper die comprises an upper die holder and a force transmission assembly arranged on the upper die holder, the lower die comprises a lower die holder, a supporting plate, a lower backing plate, a lower die plate, an elastic supporting assembly, a cushion block, an upper forming block, a pressing plate, movable forming blocks and a first limiting block, the upper forming block is pressed downwards by the force transmission assembly to press a material sheet to move downwards, and the material sheet presses the pressing plate to move towards the lower die plate, so that resilience generated by bending of the material sheet is compensated under the reaction force of the movable forming blocks on two sides, and one-step bending forming of. Through the mode, a product with high bending can be formed by one-time stamping, the die is simple in structure, convenient to operate, efficient in bending forming and high in yield, and the cost and time are saved.

Description

Bending forming die

Technical Field

The invention relates to the technical field of stamping dies, in particular to a bending forming die.

Background

For some products with high bending (for example, greater than or equal to 148.0MM), common die equipment cannot punch and form the material sheet at one time, so that the production process of the bent product is time-consuming and low in yield. In view of the above, it is desirable to provide a bending mold to solve the existing defects.

Disclosure of Invention

Based on the bending forming die, the bending forming die can be used for obtaining a product with high bending degree through one-time punch forming, and the bending efficiency and the product quality are improved.

The invention adopts a technical scheme that: a bending forming die comprises: an upper die and a lower die which are matched with each other,

the upper die comprises an upper die base and a force transmission assembly arranged on the upper die base,

the lower die comprises a lower die base, a supporting plate, a lower backing plate, a lower die plate, an elastic supporting component, a cushion block, an upper forming block, a pressing plate, a movable forming block and a first limiting block,

the lower die base is fixedly connected with the lower backing plate through a supporting plate, an accommodating space is formed between the supporting plates, the elastic supporting assembly is accommodated in the accommodating space, the lower die plate is overlapped on one side, away from the lower die base, of the lower backing plate, the cushion block, the movable forming block and the first limiting block are overlapped on the lower die plate, the pressing plate and the cushion block are both connected with the elastic supporting assembly, the pressing plate is suspended on the lower die plate through the elastic supporting assembly, the movable forming blocks are respectively arranged on two sides of the pressing plate, the first limiting block is arranged on the outer side, away from the pressing plate, of the movable forming block, one end of the upper forming block is fixedly connected with the cushion block, and the other end of the upper forming block is suspended on the pressing plate;

when the die is opened, the material sheet is overlapped on the movable forming block and the pressing plate, and the upper forming block is suspended above the material sheet and is opposite to the pressing plate; when the die is closed, the force transmission assembly presses the upper forming blocks downwards to press the material sheets to move towards the lower die plate, the material sheets press the pressing plate downwards, and the pressing plate is bent and formed under the reaction of the movable forming blocks on the two sides.

According to an embodiment of the invention, the lower die further comprises a molding precursor block, a first avoiding portion extending from an edge to a position away from the pressing plate is arranged on one side of the movable molding block close to the pressing plate, the molding precursor block is arranged on the first avoiding portion and partially extends out of the first avoiding portion, and the length of the molding precursor block extending out of the first avoiding portion is adjustable.

According to an embodiment of the invention, the lower die further comprises a forming roller, the forming roller is a cylinder, a second avoiding portion extending along the edge is arranged on one side of the movable forming block close to the pressure plate, and the forming roller is accommodated in the second avoiding portion and can roll on the movable forming block.

According to one embodiment of the invention, a reset assembly is further arranged between the first limiting block and the movable forming block, the reset assembly comprises a fixed block, a connecting rod and an elastic piece, and the fixed block is fixedly connected with the first limiting block and elastically connected with the movable forming block through the connecting rod and the elastic piece.

According to one embodiment of the invention, the elastic support assembly comprises a spring arranged in the accommodating space, a first top plate connected with the spring, a second top plate abutted against one side of the pressing plate close to the lower template, and a connecting column connected with the first top plate and the second top plate, wherein the connecting column sequentially penetrates through the lower base plate and the lower template.

According to an embodiment of the invention, the lower template is further provided with second limiting blocks, and a plurality of the second limiting blocks are arranged on two sides of the connecting column in two rows and are opposite to the suspended second top plate.

According to one embodiment of the invention, the upper die holder is further provided with an upper limiting column, the lower backing plate is provided with a positioning seat, and the upper limiting column is correspondingly matched with the positioning seat.

According to one embodiment of the invention, the lower template is further provided with a lower limiting column, and the lower limiting column is arranged around the outer side of the first limiting block far away from the movable forming block.

According to one embodiment of the invention, the upper die holder is further provided with a pressing column, and the pressing column is opposite to the cushion block.

According to one embodiment of the invention, the force transfer assembly comprises a plurality of force transfer blocks arranged at intervals, and the force transfer blocks are opposite to the upper forming block.

The invention has the beneficial effects that: the bending forming die comprises an upper die and a lower die which are matched with each other, wherein the upper die comprises an upper die base and a force transmission assembly arranged on the upper die base, the lower die comprises a lower die base, a supporting plate, a lower liner plate, a lower die plate, an elastic supporting assembly, a cushion block, an upper forming block, a pressing plate, a movable forming block and a first limiting block, the lower die base and the lower liner plate are fixedly connected through the supporting plate, an accommodating space is formed between the supporting plates, the elastic supporting assembly is accommodated in the accommodating space, the lower die plate is overlapped on one side, away from the lower die base, of the lower liner plate, the cushion block, the movable forming block and the first limiting block are overlapped on the lower die plate, the pressing plate and the cushion block are connected with the elastic supporting assembly, the pressing plate is suspended on the lower die plate by the elastic supporting assembly, the movable forming block is respectively arranged on two sides of, the first limiting block is arranged on the outer side, far away from the pressing plate, of the movable forming block, one end of the upper forming block is fixedly connected with the cushion block, and the other end of the upper forming block is suspended on the pressing plate. Through the mode, a product with high bending can be formed by one-time stamping, the die is simple in structure, convenient to operate, efficient in bending forming and high in yield, and the cost and time are saved.

Drawings

Fig. 1 is a schematic structural view of a bending mold according to an embodiment of the present invention when the mold is opened;

FIG. 2 is a schematic view of the bending mold shown in FIG. 1 illustrating a closed configuration;

FIG. 3 is a cross-sectional view of the bend forming die of FIG. 1 taken along line A-A;

FIG. 4 is a partially exploded view of the bend forming die of FIG. 1;

FIG. 5 is a schematic structural view of the bending mold shown in FIG. 4 with a part of the lower mold removed;

FIG. 6 is a schematic view of a combined structure of the first limiting block, the reset assembly and the movable forming block in FIG. 5;

fig. 7 is an exploded view of the composite structure of fig. 6.

The meaning of the reference symbols in the drawings is:

100-bending a forming die; 10-upper mould; 101-an upper die holder; 102-a force transfer assembly; 1021-a force transfer block; 103-upper limiting column; 104-a compression column; 20-lower die; 201-a lower die holder; 202-a support plate; 203-lower backing plate; 204-a lower template; 205-a resilient support member; 2051-spring; 2052-first top plate; 2053-second top panel; 2054-connecting column; 206-cushion block; 207-upper forming block; 208-a platen; 209-movable forming block; 2091-first avoidance portion; 2092-second clearance part; 210-a first stopper; 211-forming a precursor block; 212-forming rollers; 213-a reset component; 2131-fixed block; 2132-a connecting rod; 2133-an elastic member; 214-a second stopper; 215-positioning seat; 216-lower restraining post; 200-web.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Fig. 1 and 2 are schematic diagrams showing the result of opening and closing the bending mold according to the embodiment of the present invention, fig. 3 is a sectional view of the bending mold according to the embodiment of the present invention along a-a, fig. 4 is a schematic diagram showing a partially exploded structure of the bending mold according to the embodiment of the present invention, and referring to fig. 1 to 4, the bending mold 100 includes: and an upper mold 10 and a lower mold 20 which are matched. The upper die 10 includes an upper die base 101 and a force transmission assembly 102 disposed on the upper die base 101. The lower mold 20 comprises a lower mold base 201, a supporting plate 202, a lower backing plate 203, a lower mold plate 204, an elastic supporting assembly 205, a cushion block 206, an upper molding block 207, a pressing plate 208, a movable molding block 209 and a first limiting block 210. The lower die holder 201, the lower backing plate 203 and the lower die plate 204 are sequentially arranged from bottom to top, a plurality of supporting plates 202 are connected between the lower die holder 201 and the lower backing plate 203, a containing space is formed by enclosing the supporting plates 202, and the elastic supporting assembly 205 is contained in the containing space; the lower template 204 is overlapped on the lower backing plate 203, and the cushion block 206, the movable forming block 209 and the first limiting block 210 are overlapped on the lower template 204; the pressing plate 208 and the cushion block 206 are both connected with the elastic supporting assembly 205, the pressing plate 208 is suspended on the lower template 204 by the elastic supporting assembly 205, the height of the cushion block 208 on the lower template 204 is higher than that of the pressing plate 208, the pressing plate 208 is in a long strip shape, the upper molding block 207 is also in a long strip shape, one end of the upper molding block 207 is fixedly arranged on the cushion block 206, the other end of the upper molding block 207 is suspended right above the pressing plate 208, and when the mold is opened, the orthographic projection of the upper molding block 207 covers the pressing plate 208; the activity becomes the mould piece 209 and is equipped with two, and the clamp plate 208 both sides are located to the symmetry, and activity becomes the mould piece 209 and is the cuboid, and first stopper 210 also is equipped with two with activity becomes the mould piece 209 correspondence, locates the outside that the clamp plate 208 was kept away from to activity becomes the mould piece 209 respectively, goes up mould piece 207 and lower bolster 204 fixed connection for the motion of restriction activity becomes the mould piece 209.

Specifically, when the mold is opened, the material sheet 200 is stacked on the movable forming block 209 and the pressing plate 208, and the upper forming block 207 is suspended above the material sheet 200 and is opposite to the pressing plate 208; when the die is closed, the force transmission assembly 102 presses the upper forming block 207 downwards to move towards the lower die plate 204, the upper forming block 207 presses the material sheet 200 to press the pressing plate 208 and presses the movable forming blocks 209 at two sides to move towards the position departing from the pressing plate 208 to abut against the first limiting block 210, the force transmission assembly 102 continues to drive the upper forming block 207, the material sheet 200 and the pressing plate 208 to move to abut against the lower die plate 204, and the material sheet 200 is bent towards the pressing plate 208 from the contact position of the movable forming blocks 209 to be integrally formed. Finally, the bend-formed material sheet 200 is drawn out in the direction in which the upper forming block 207 extends.

The bending forming die 100 provided by the embodiment of the invention presses the material sheet 200 to move downwards by pressing the upper forming block 207 downwards through the force transmission assembly 102, the material sheet 200 presses the pressing plate 208 to move towards the lower template 204, the resilience generated by bending the material sheet 200 is compensated under the reaction force of the movable forming blocks 209 on the two sides, the one-step bending forming of the material sheet 200 is completed, the bending height of the left side and the right side of the material sheet 200 can be greater than or equal to 148.0MM, and the length of the force transmission assembly can be adaptively adjusted according to the bending height of an actual product. The bending forming die 100 is simple in structure, convenient to operate, capable of preparing a formed product with high bending degree, high in bending forming efficiency and high in yield, and saves cost and time.

In an alternative embodiment, the bending angle of the material sheet 200 can be adjusted by arranging the molding precursor 211 on the movable molding block 209. Specifically, referring to fig. 6 to 7, a first avoiding portion 2091 is disposed on a side of the movable forming block 209 close to the pressing plate 208, the first avoiding portion 2091 is formed by extending from an edge to a side away from the pressing plate 208, the forming precursor block 211 is disposed on the first avoiding portion 2091 and partially extends out of the first avoiding portion 2091, and a bending angle of the material sheet 200 is adjusted by adjusting a length of the forming precursor block 211 extending out of the first avoiding portion 2091, for example, if the forming precursor block 211 is just completely accommodated in the first avoiding portion 2091, the movable forming block 209 is kept flush with a side edge of the pressing block close to the pressing block, when the mold is closed, a bending angle of the material sheet 200 is just 90 degrees, a length of the specific forming precursor block 211 extending out of the first avoiding portion 2091 is determined according to an actual bending angle of a product, and the longer the extending length is, the larger the bending angle is. Optionally, the protruding portion of the molding precursor 211 has a certain radian, so that the material sheet can be prevented from being scratched when the mold is closed. Optionally, two molding precursors 211 are disposed on each movable molding block 209, and are symmetrically disposed at two ends of the movable molding block 209, respectively, and the lengths of the protruding portions are kept consistent.

In an alternative embodiment, in order to ensure that the material sheet 200 can be smoothly bent and formed when the mold is closed, forming rollers 212 may be provided on the movable forming block 209. Specifically, referring to fig. 6-7, the forming roller 212 is a cylinder, one side of the movable forming block 209 close to the press plate 208 is provided with a second avoiding portion 2092 extending along the edge, the forming roller 212 can be connected to the forming precursor blocks 211 at both ends and can roll in the second avoiding portion 2092, when the mold is closed, the material sheet 200 is pressed downward to extrude the movable forming blocks 209 at both sides, and the abutting portion of the material sheet 200 and the forming roller 212 is bent downward to form, because the forming roller 212 can roll on the movable forming block 209, the bending portion can be prevented from being damaged by excessive friction during the pressing process of the material sheet 200, and the bending process can be smoothly performed.

In an alternative embodiment, referring to fig. 3, 6 and 7, a resetting assembly 213 is further disposed between the first stopper 210 and the movable mold block 209, the resetting assembly 213 includes a fixed block 2131, a connecting rod 2132 and an elastic member 2133, the fixed block 2131 is fixedly connected with the first stopper 210 and is elastically connected with the movable mold block 209 through the connecting rod 2131 and the elastic member 2133. Specifically, the fixed block 2131 and the movable forming block 209 are provided with opposite cavity grooves, when the mold is opened, the fixed block 2131 and the movable forming block 209 are arranged oppositely at intervals, part of the elastic element 2133 is accommodated in the cavity groove in the fixed block 2131, the other part of the elastic element is accommodated in the cavity groove in the movable forming block 209, the connecting rod penetrates through the fixed block 2131, the elastic element 2133 and the movable forming block 209 in sequence, one end of the connecting rod is fixed on the fixed block 2131, and the other end of the connecting rod is accommodated in a through hole of the movable forming block 209. When the mould is closed, the force transmission assembly 102 presses the upper forming block 207 downwards, presses the material sheet 200 and presses the movable forming blocks 209 at two sides to move towards the fixed block 2131 until the movable forming blocks abut against the fixed block 2131, and the inner elastic piece 2133 is compressed; when the mold is opened again, the force transfer assembly 102 and the upper forming blocks 207 are restored to the original positions, the extrusion of the movable forming blocks 209 at the two sides is released, and the compressed elastic pieces 2133 rebound to drive the movable forming blocks 209 to move to the original positions. Optionally, the elastic member 2133 is a spring.

In an alternative embodiment, referring to fig. 3 and 5, the elastic supporting component 205 includes a spring 2051, a first top plate 2052, a second top plate 2053, and a connecting post 2054 disposed in the accommodating space. The springs 2051 are arranged side by side, one end of each spring is connected with the lower die holder 201, and the other end of each spring is connected with the first top plate 2052; the connecting column 2054 is also provided with a plurality of connecting columns along the arrangement direction of the springs, the connecting column 2054 sequentially penetrates through the lower base plate 203 and the lower die plate 204 through a through hole, one end of the connecting column 2054 is connected with the first top plate 2052, the other end of the connecting column 2053 is connected with the second top plate 2053, the pressing plate 208 is fixedly arranged on the second top plate 2053, and the pressing plate 208 is suspended on the lower die plate 204 by the second top plate 2053. When the die is closed, the force transmission assembly 102 presses the upper forming block 207 downwards to press the material sheet 200 to move downwards, and further presses the pressing plate 208, the second top plate 2053, the connecting column 2054 and the first top plate 2052 to compress the spring 2051; when the mold is opened, the force transmission assembly 102 returns to the original position, the pressure of the upper molding block 207 on the pressing block 208 and the elastic assembly 205 is released, and the spring 2051 rebounds to drive the first top plate 2052, the connecting column 2054, the second top plate 2053 and the pressing plate 208 to return to the original position.

In an alternative embodiment, a second stop block 214 may be provided on the lower plate 204 to limit the distance the resilient support assembly 205 is depressed. Specifically referring to fig. 3, 6 and 7, a plurality of the second stoppers 214 are arranged in two rows at two sides of the connecting column 2054 and are disposed right below the suspended second top plate 2053. When the mold is closed, the pressing plate 208 drives the second top plate 2053 to press downward to abut against the second stopper 214, and the pressing is completed.

In an alternative embodiment, referring to fig. 1-4, the upper mold base 101 further has an upper positioning post 103, the lower backing plate 203 has a positioning seat 215, and the upper positioning post 103 is correspondingly matched with the positioning seat 215. Specifically, the upper die base 101 is provided with four cylindrical upper limiting columns 103, the four upper limiting columns 103 are uniformly arranged at intervals, the number of the positioning bases 215 is correspondingly 4, the positioning bases are cylindrical, and when the die is closed, the upper limiting columns 103 are accommodated in the positioning bases 215.

In an alternative embodiment, referring to fig. 1 to 4, the lower mold plate 204 further has a lower limiting column 216, and the lower limiting column 216 is enclosed outside the first limiting block 210 away from the movable forming block 209. Specifically, the plurality of lower limiting blocks 216 are uniformly distributed on the periphery of the first limiting blocks 210 at two sides, and are used for limiting the position where the material sheet 200 is placed.

In an alternative embodiment, referring to fig. 1-4, the upper die base 201 is further provided with pressing columns 104, in an embodiment of the present invention, 3 pressing columns 104 are arranged around the force transmission assembly 102, and all the pressing columns 104 are opposite to the pad 206. When the mold is closed, 3 hold downs 104 abut the spacer block 206.

In an alternative embodiment, referring to fig. 1-4, the force transfer assembly 102 includes a plurality of force transfer blocks 1021 arranged at intervals, and the force transfer blocks 1021 are opposite to the upper forming block 207. Specifically, in the embodiment of the invention, three force transfer blocks 1021 with different shapes are arranged, the middle force transfer block 1021 is opposite to the material sheet 200, the force transfer blocks 1021 at two ends are respectively arranged at two ends of the upper forming block 207, the force transfer blocks 1021 at two ends are corresponding to two outer sides of the material sheet 200, the thickness of the middle force transfer block 1021 is determined according to the distance between two bends of a product, the thickness of the force transfer blocks 1021 at two ends can be slightly wider, so that the upper forming block 207 can be stably pressed, and the bending forming of the material sheet 200 is not influenced.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a bending forming die which characterized in that includes: an upper die and a lower die which are matched with each other,

when the die is opened, the material sheet is overlapped on the movable forming block and the pressing plate, and the upper forming block is suspended above the material sheet and is opposite to the pressing plate; when the die is closed, the force transmission assembly presses the upper forming blocks downwards to press the material sheets to move towards the lower die plate, the material sheets press the pressing plate downwards, and the movable forming blocks on the two sides act on the pressing plate to bend and form.

2. A bending mold according to claim 1, wherein the lower mold further comprises a molding precursor block, a first positioning portion extending from an edge of the movable molding block to a position away from the platen is disposed on a side of the movable molding block close to the platen, the molding precursor block is disposed on the first positioning portion and partially extends out of the first positioning portion, and a length of the molding precursor block extending out of the first positioning portion is adjustable.

3. A bending mould according to claim 1, wherein the lower mould further comprises a forming roller, the forming roller is a cylinder, a second avoiding portion extending along the edge is arranged on one side of the movable forming block close to the pressure plate, and the forming roller is accommodated in the second avoiding portion and can roll on the movable forming block.

4. The bending forming die of claim 1, wherein a reset assembly is further arranged between the first limiting block and the movable forming block, the reset assembly comprises a fixed block, a connecting rod and an elastic piece, and the fixed block is fixedly connected with the first limiting block and elastically connected with the movable forming block through the connecting rod and the elastic piece.

5. The bending forming die of claim 1, wherein the elastic support assembly comprises a spring arranged in the accommodating space, a first top plate connected with the spring, a second top plate abutting against one side of the pressing plate close to the lower die plate, and a connecting column connected with the first top plate and the second top plate, and the connecting column sequentially penetrates through the lower base plate and the lower die plate.

6. The bending mold according to claim 5, wherein the lower mold plate is further provided with second limiting blocks, and a plurality of the second limiting blocks are arranged on two sides of the connecting column in two rows and are opposite to the suspended second top plate.

7. The bend forming die of claim 1, wherein said upper die base further defines an upper retention post, said lower bolster defines a retention seat, and said upper retention post is correspondingly mated with said retention seat.

8. The bending forming die of claim 1, wherein the lower die plate is further provided with a lower limiting column, and the lower limiting column is arranged around the outer side of the first limiting block, which is far away from the movable forming block.

9. The bend forming die of claim 1, wherein said upper die base further comprises a compression post, said compression post facing said pad.

10. The bend forming die of claim 1, wherein the force transfer assembly includes a plurality of force transfer blocks spaced apart from one another, the force transfer blocks being aligned with the upper forming block.