CN110918789A

CN110918789A - Bending and punching die

Info

Publication number: CN110918789A
Application number: CN201911261631.8A
Authority: CN
Inventors: 周垒; 刘芝豹; 张威; 蒋旭; 王晓华
Original assignee: JIANGSU HUADIAN STEEL TOWER MANUFACTURING Co Ltd; Shandong Electrical Engineering and Equipment Group Co Ltd
Current assignee: JIANGSU HUADIAN STEEL TOWER MANUFACTURING Co.,Ltd.
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-03-27

Abstract

The invention discloses a bending and punching die, which comprises: the lower die is provided with a supporting table, a punched hole vertically extending downwards from the upper end surface of the supporting table is defined on the supporting table, and a plate to be bent is suitable for being placed on the supporting table, wherein the effective width L2 formed by the supporting table in the first direction is equal to the width D2 of the inner contour of the U-shaped plate formed by the plate to be bent in the first direction; the upper die is provided with a bending groove which is opposite to the support table, a punch which vertically extends downwards from the bottom of the bending groove is arranged in the bending groove, the punch is opposite to the punched hole, and the groove distance L1 formed by the bending groove in the first direction is equal to the width D1 of the outer contour of the U-shaped plate in the first direction; the elastic component, the one end of elastic component is connected in the groove of bending, and when last mould downstream and bed die matched, the board of waiting to bend is extruded and is formed the U template in the inslot of bending, and the U template supports and ends on the other end of elastic component for the U template has the tendency power that takes off the groove of bending.

Description

Bending and punching die

Technical Field

The invention relates to the field of mechanical equipment, in particular to a bending and punching die.

Background

When the steel pipe tower ladder climbing frame is welded, a U-shaped plate is needed to be used as a connecting piece, and a through hole is formed in the center of the bottom of the U-shaped plate. When the U-shaped plate is processed, the cut rectangular steel plate is required to be bent into the U-shaped plate, and then the U-shaped plate is placed into a special positioning groove for punching; this manufacturing procedure is loaded down with trivial details, and when bending, the U template card need artifically take out in the mould easily, has seriously influenced machining efficiency.

Disclosure of Invention

The invention aims to solve one of the problems in the prior art, and provides a bending and punching die which can be formed at one time, is simple to process and convenient to operate, and avoids a U-shaped plate from being clamped in the die, so that the processing efficiency is greatly improved.

In order to achieve the above object, the present invention provides a bending and punching die, including:

the lower die is provided with a supporting table, the supporting table defines a punched hole vertically extending downwards from the upper end face of the punched hole, and a plate to be bent is suitable to be placed on the supporting table, wherein the effective width L2 formed by the supporting table in the first direction is equal to the width D2 of the inner contour of the U-shaped plate formed by the plate to be bent in the first direction;

the upper die is provided with a bending groove which is opposite to the support table, a punch which vertically extends downwards from the bottom of the bending groove is arranged in the bending groove, the punch is opposite to the punched hole, and the groove distance L1 formed by the bending groove in the first direction is equal to the width D1 of the outer contour of the U-shaped plate in the first direction; and

the elastic piece, the one end of elastic piece is connected bend the inslot, when last mould downstream with when the bed die cooperatees, the board of waiting to bend is extruded and is formed the U template in the bending inslot, the U template supports and ends on the other end of elastic piece makes the U template has and breaks away from bend the tendency power in groove.

In the technical scheme, a plate to be bent is placed on a supporting table of a lower die, so that an upper die is close to and gradually matched with the lower die, the plate to be bent gradually deforms in the process, the upper end face of the plate to be bent is gradually attached to the inner wall of a bending groove in the upper die, the lower end face of the plate to be bent is gradually attached to the outer contour of the supporting table of the lower die until the plate to be bent is completely attached to form a U-shaped plate, and a punch can form a through hole in the plate to be bent and is matched with a punched hole in the supporting table; the U-shaped plate can be abutted against the elastic piece, so that the U-shaped plate has a tendency to be separated from the bending groove, after the bending and punching are completed, the upper die is separated from the lower die, and the elastic piece can provide a thrust force for the U-shaped plate to separate the U-shaped plate from the upper die; this mould can one shot forming, and processing is simple, and convenient operation avoids U template card in the mould moreover, improves machining efficiency greatly.

In addition, the bending and punching die provided by the invention can also have the following technical characteristics:

preferably, the method further comprises the following steps: and the separation plate is arranged in the bending groove, is perpendicular to the punch, and is connected with the other end of the elastic piece, so that the separation plate and the elastic piece move synchronously.

Preferably, the separating plate is further provided with a connecting hole which is vertically penetrated, and the connecting hole is matched with the punch.

Preferably, the elastic member comprises a compression spring, and the compression spring is suitable for being sleeved on the punch.

Preferably, the bending device further comprises bearings, the bearings are pivotally connected to two sides of the bending groove, profile surfaces of the bearings slightly protrude out of side walls of the bending groove, when the lower die is matched with the upper die, the upper surface of the plate to be bent is in rolling connection with the bearings, and the shortest span of the profile surfaces of the two bearings in the first direction is equal to the outer contour width of the U-shaped plate in the first direction.

Preferably, the bearing is detachably coupled to the bending groove by a fastener.

Optionally, the bending device further comprises a pair of limiting plates, the limiting plates are arranged on two sides of the supporting table of the lower die at intervals along the first direction to form a limiting cavity, and the plate to be bent is suitable for being matched in the limiting cavity.

Preferably, the span of the limiting cavity in the first direction is equal to the span of the outer contour of the bending groove in the first direction.

Preferably, the bending device further comprises at least one baffle plate, wherein the at least one baffle plate is arranged on at least one side of the limiting cavity along a second direction to limit the second direction of the plate to be bent, and the second direction is perpendicular to the first direction.

Preferably, the device further comprises a guide mechanism, wherein the guide mechanism comprises: the guide post is arranged on the upper die or the lower die, and the guide hole is arranged on the lower die or the upper die, and the guide post is matched with the guide hole.

Drawings

FIG. 1 is a schematic structural view of a bending and punching die according to an embodiment of the invention;

FIG. 2 is an exploded view of a bending punch die according to an embodiment of the invention;

reference numerals:

a board to be bent 200';

a U-shaped plate 200;

bending the punching die 100;

a lower mold 10;

a support table 11; punching 111;

a limit plate 12; a limiting cavity 12A;

a guide post 13;

an upper mold 20; a chucking plate 20A;

a bending groove 21; a punch 211;

a bearing 22;

a guide hole 23;

a connecting portion 24;

an elastic member 30;

a separation plate 31;

and a connection hole 311.

Detailed Description

The invention will be further explained with reference to the drawings.

The following description is provided with reference to the accompanying drawings to assist in a comprehensive understanding of various embodiments of the invention as defined by the claims. It includes various specific details to assist in this understanding, but these details should be construed as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that changes and modifications of the various embodiments described herein can be made without departing from the scope of the invention, which is defined by the appended claims. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

It will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims.

Although expressions such as "1 st", "2 nd", "first" and "second" may be used to describe the respective elements of the present invention, they are not intended to limit the corresponding elements. For example, the above expressions are not intended to limit the order or importance of the corresponding elements. The above expressions are used to distinguish one element from another.

References herein to "upper", "lower", "left", "right", etc. are merely intended to indicate relative positional relationships, which may change accordingly when the absolute position of the object being described changes.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular references include plural references unless there is a significant difference in context, scheme or the like between them.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present specification and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Note that the first direction is a horizontal direction in the drawing, and the second direction is a direction perpendicular to the paper plane in the drawing.

A bending-punching die 100 according to the present invention, as shown in fig. 1 and 2, includes: the lower die 10, the upper die 20 and the elastic member 30, for example, the bending and punching die 100, are applied to a punching machine, the lower die 10 is fixedly connected to a base of the punching machine, and the upper die 20 is connected to a punching head of the punching machine through a connecting portion 24 thereon, so that the upper die 20 and the lower die 10 are engaged with and disengaged from each other;

a lower die 10, wherein the lower die 10 has a supporting platform 11 thereon, the supporting platform 11 defines a punched hole 111 extending vertically downward from an upper end surface thereof, and a board 200 'to be bent is adapted to be placed on the supporting platform 11, wherein an effective width L2 formed by the supporting platform 11 in a first direction is equal to a width D2 in the first direction of an inner contour of the U-shaped board 200 formed by the board 200' to be bent; specifically, the supporting platform 11 protrudes from the lower die 10, and the maximum width of the supporting platform 11 in the first direction is equal to the width of the inner contour of the U-shaped board 200 in the first direction, so that the lower end surface of the board 200' to be bent is extruded and then deformed along the outer contour of the supporting platform 11 until completely attached to the outer contour of the board 200 to form the U-shaped board 200; the punching holes 111 arranged on the support table 11 correspond to the positions of the plates 200' to be bent, which need to be punched with the punching holes 111;

an upper die 20, wherein the upper die 20 defines a bending groove 21 opposite to the support platform 11, a punch 211 vertically extending downwards from the bottom of the bending groove 21 is further arranged in the bending groove 21, and the punch 211 is opposite to the punched hole 111, wherein a groove distance L1 formed by the bending groove 21 in a first direction is equal to a width D1 of the outer contour of the U-shaped plate 200 in the first direction; specifically, two clamping plates 20A are arranged on the upper die 20 at intervals along the first direction to form bending grooves 21, the bending grooves 21 can be integrally formed in a forging or casting manner in the production and manufacturing process of the upper die 20, and of course, the clamping plates 20A can also be fixedly connected to the upper die 20 by means of fasteners; the distance between the bending grooves 21 formed in the first direction is equal to the width of the outer contour of the U-shaped plate 200 in the first direction, so that the upper end surface of the plate 200' to be bent is extruded and deformed along the inner contour of the bending grooves 21 until the upper end surface is completely attached to the inner contour of the bending grooves 21 to form the U-shaped plate 200;

an elastic member 30, one end of the elastic member 30 is connected in the bending groove 21, when the upper die 20 moves downwards to match with the lower die 10, the plate 200' to be bent is extruded into the bending groove 21 to form a U-shaped plate 200, and the U-shaped plate 200 abuts against the other end of the elastic member 30, so that the U-shaped plate 200 has a tendency to be separated from the bending groove 21; that is, in the process of matching the upper mold 20 and the lower mold 10, the elastic member 30 is extruded by the plate 200' to be bent to deform the plate to form the U-shaped plate 200, and then the upper mold 20 and the lower mold 10 are separated from each other, and in this process, the elastic member 30 has an elastic force to restore the original shape after being extruded, so that the U-shaped plate 200 is separated from the bending groove 21.

It can be understood that, the plate 200 ' to be bent is placed on the supporting table 11 of the lower mold 10, so that the upper mold 20 approaches to and gradually fits with the lower mold 10, in the process, the plate 200 ' to be bent gradually deforms, the upper end surface of the plate gradually fits the inner wall of the bending groove 21 on the upper mold 20, the lower end surface of the plate gradually fits the outer contour of the supporting table 11 of the lower mold 10 until the plate is completely fitted to form the U-shaped plate 200, and the punch 211 forms a through hole on the plate 200 ' to be bent and fits with the punched hole 111 on the supporting table 11; the U-shaped plate 200 will abut against the elastic member 30, so that the U-shaped plate 200 has a tendency to disengage from the bending groove 21, when the bending punch 111 is completed, the upper die 20 is separated from the lower die 10, and the elastic member 30 will give a pushing force to the U-shaped plate 200 so that it disengages from the upper die 20; this mould can one shot forming, and processing is simple, and convenient operation avoids U template 200 card in the mould moreover, improves machining efficiency greatly.

It should be noted that the size of the support platform 11 in the first direction gradually decreases from top to bottom, because when the lower end surface of the general bending plate deforms along the outer contour of the support platform 11, due to certain elasticity of the general bending plate, the general bending plate correspondingly retracts, and the U-shaped plate 200 can be bent more fully by designing the size of the lower end of the support platform 11 to be slightly smaller.

In one embodiment of the present invention, further comprising: a separation plate 31 disposed in the bending groove 21, disposed perpendicular to the punch 211, and connected to the other end of the elastic member 30 such that the separation plate 31 and the elastic member 30 move in synchronization; specifically, the separating plate 31 is horizontally disposed in the bending groove 21, one end of the elastic member 30 is connected to the bottom of the bending groove 21, and the other end of the elastic member 30 is connected to the separating plate 31, for example, the elastic member may be connected by welding or fastening members, so that the separating plate 31 and the elastic member 30 act synchronously, the contact area between the elastic member 30 and the U-shaped plate 200 is increased, and the stress on the U-shaped plate 200 is more uniform and reliable.

In an embodiment of the present invention, the separation plate 31 is further provided with a connection hole 311 penetrating up and down, and the connection hole 311 is matched with the punch 211; that is, at this time, the separating plate 31 is of an integral structure, and the connecting hole 311 is disposed at a position corresponding to the connecting hole 311, so that the separating plate 31 can move up and down along the punch 211 after being pressed, and thus the punch 211 can guide the separating plate 31, and the separating plate 31 can move more stably and reliably.

In another embodiment of the present invention, the separation plate 31 includes a plurality of sub-separation plates, and the plurality of separation plates are respectively connected to a corresponding number of elastic members 30, so that the up-and-down movement of the sub-separation plates with different numbers can be controlled by the elastic members 30 with different numbers, and the separation of the U-shaped plate 200 can also be realized.

In one embodiment of the present invention, the elastic member 30 comprises a compression spring, which is adapted to be sleeved on the punch 211; that is to say, the compression spring is sleeved on the punch 211 and can guide the spring, one end of the compression spring is connected to the bottom of the bending groove 21, and the other end of the compression spring is connected to the separating plate 31, so that the separating plate 31 can move more reliably, and the stress of the U-shaped plate 200 is more uniform; of course, the present invention is not limited thereto, and the elastic member 30 may be an elastic pad or an elastic rubber member.

In an embodiment of the present invention, the present invention further comprises bearings 22, the bearings 22 are pivotally connected to both sides of the bending groove 21, the contour surfaces of the bearings 22 slightly protrude out of the side walls of the bending groove 21, when the lower die 10 is matched with the upper die 20, the upper surface of the board 200' to be bent is in rolling connection with the bearings 22, wherein the shortest span between the contour surfaces of the two bearings 22 in the first direction is equal to the outer contour width of the U-shaped board 200 in the first direction; that is, the shortest span between the contour surfaces of the two bearings 22 in the first direction is the effective width L2 formed by the supporting platform 11 in the first direction.

Specifically, the bearings 22 are symmetrically connected to two sides of the bending groove 21 along the first direction, wherein a central axis of the bearing 22 is parallel to the second direction, the bearings 22 are rotatably connected to two sides of the bending groove 21, so that the profile surfaces of the bearings 22 slightly extend into the bending groove 21, that is, the profile surfaces of the bearings 22 slightly protrude out of the side walls of the bending groove 21, and the minimum distance between the profile surfaces of the two bearings 22 is equal to the width of the outer profile of the U-shaped plate 200, so that the upper end surface of the plate 200 'to be bent is in rolling connection with the side walls of the bending groove 21 in the contact process, and the friction force between the plate 200' to be bent and the bending groove 21 can be greatly reduced;

of course, the positions of the two bearings 22 may also be asymmetrically arranged, as long as the shortest span of the profile surfaces of the two bearings 22 in the first direction is ensured to be equal to the width of the outer contour of the U-shaped plate 200.

Preferably, four bearings 22 may be disposed along the second direction of the bending groove 21, that is, two bearings 22 are disposed at both sides of the bending groove 21 in the second direction perpendicular to the first direction, respectively, so that the stamping effect of the U-shaped plate 200 may be better.

Due to repeated rolling contact between the bearing 22 and the plate 200' to be bent, which in turn accelerates the wear and damage of the bearing 22, in one embodiment of the present invention, the bearing 22 is detachably connected to the bending groove 21 by a fastening member, for example, a threaded hole is provided on the clamping plate 20A, and a fastening bolt is inserted through an inner ring of the bearing 22 to be matched with the threaded hole, so that the bearing 22 can be conveniently detached and replaced.

In an embodiment of the present invention, the bending device further comprises a pair of limiting plates 12, the limiting plates 12 are arranged at intervals along a first direction on two sides of the supporting platform 11 of the lower die 10 to form a limiting cavity 12A, and the plate to be bent 200' is adapted to fit in the limiting cavity 12A; that is to say, can be spacing waiting to bend board 200 'in the first direction through setting up a pair of limiting plate 12, it is convenient fixed wait to bend the position of board 200', and limiting plate 12 highly be slightly higher than brace table 11's height, can more conveniently place like this and wait to bend board 200'.

In one embodiment of the present invention, the span of the limiting cavity 12A in the first direction is equal to the span of the outer contour of the bending groove 21 in the first direction; that is to say, the upper die 20 is located in the lower die 10 matching process, and the bending groove 21 is matched with the limiting cavity 12A, so that the upper die 20 can be guided, the upper die 20 is matched with the lower die 10 more accurately, and the processing of the U-shaped plate 200 is more accurate.

In an embodiment of the present invention, the bending device further comprises at least one baffle plate, the at least one baffle plate is arranged on at least one side of the limiting cavity 12A along a second direction to limit the second direction of the plate to be bent 200', wherein the second direction is perpendicular to the first direction; specifically, at least one baffle plate can be arranged on two sides of the limiting cavity 12A in the second direction for stopping the plate 200 ' to be bent, so that the plate 200 ' to be bent can be limited in the second direction, the plate 200 ' to be bent can be more accurately and conveniently fixed on the supporting table 11 of the lower die 10, and the processing efficiency is improved; when placing the board 200 'of waiting to bend, will wait to bend the board 200' and place earlier in spacing chamber 12A, if the baffle is one then need promote along the second direction and wait to bend board 200 'for the one end of waiting to bend board 200' supports and ends on the baffle, then can process and form U template 200, if the baffle is two, then can process between.

In one embodiment of the present invention, further comprising a guide mechanism, the guide mechanism comprising: a guide post 13 disposed on the upper mold 20 or the lower mold 10, and a guide hole 23 disposed on the lower mold 10 or the upper mold 20, the guide post 13 being matched with the guide hole 23; the guiding mechanism can guide the upper mold 20 and the lower mold 10, so that the upper mold 20 and the lower mold 10 can move relatively more precisely, and it should be noted that, in the process of attaching and detaching the upper mold 20 and the lower mold 10 to each other, the guiding columns 13 and the guiding holes 23 are always matched, that is, the matching stroke of the guiding columns 13 and the guiding holes 23 is greater than the maximum separating distance between the upper mold 20 and the lower mold 10.

The working principle of the invention is as follows: a plate 200 'to be bent is placed on the supporting table 11, the plate 200' to be bent is placed in the limiting cavity 12A firstly, the plate 200 'to be bent is pushed along the second direction, one end of the plate 200' to be bent is abutted against the baffle, then the upper die 20 is close to the lower die 10 and is gradually matched with the lower die, in the process, the plate 200 'to be bent is gradually deformed, the upper end face of the plate is in rolling contact with the bearings 22 on the two sides of the bending groove 21 of the upper die 20 and is gradually attached to the inner wall of the bending groove 21, the lower end face of the plate is gradually attached to the outer contour of the supporting table 11 of the lower die 10 until the plate is completely attached to form a U-shaped plate 200, and the punch 211 can form a through hole on the plate 200' to be bent and is matched with the punched; the U-shaped plate 200 will abut against the elastic member 30, so that the U-shaped plate 200 has a tendency to disengage from the bending groove 21, when the bending punch 111 is completed, the upper die 20 is separated from the lower die 10, and the elastic member 30 will give a pushing force to the U-shaped plate 200 so that it disengages from the upper die 20; the die can be formed at one time, is simple to process and convenient to operate, avoids the U-shaped plate 200 from being clamped in the die, and greatly improves the processing efficiency

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.

Those skilled in the art will appreciate that various features of the various embodiments of the invention described hereinabove may be omitted, added to, or combined in any manner, respectively. Moreover, simple modifications and structural modifications that are adaptive and functional to those skilled in the art are within the scope of the present invention.

While the invention has been shown and described with reference to various embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. A bending and punching die is characterized by comprising:

a lower die (10), wherein the lower die (10) is provided with a support table (11), the support table (11) defines a punched hole (111) extending vertically downwards from the upper end surface of the support table, a plate (200 ') to be bent is suitable for being placed on the support table (11), and the effective width L2 formed by the support table (11) in the first direction is equal to the width D2 of the inner contour of the U-shaped plate (200) formed by the plate (200') to be bent in the first direction;

an upper die (20), wherein the upper die (20) defines a bending groove (21) opposite to the support table (11), a punch (211) vertically extending downwards from the bottom of the bending groove (21) is further arranged in the bending groove (21), the punch (211) is opposite to the punched hole (111), and the groove distance L1 formed by the bending groove (21) in the first direction is equal to the width D1 of the outer contour of the U-shaped plate (200) in the first direction; and

the bending die comprises an elastic piece (30), one end of the elastic piece (30) is connected into the bending groove (21), when the upper die (20) moves downwards to be matched with the lower die (10), the plate (200') to be bent is extruded to form a U-shaped plate (200) in the bending groove (21), the U-shaped plate (200) abuts against the other end of the elastic piece (30), and therefore the U-shaped plate (200) has the tendency to be separated from the bending groove (21).

2. The bend punch module of claim 1, further comprising: and a separation plate (31), wherein the separation plate (31) is arranged in the bending groove (21), is perpendicular to the punch (211), and is connected with the other end of the elastic member (30) so that the separation plate (31) and the elastic member (30) move synchronously.

3. The bending and punching module according to claim 2, wherein the separating plate (31) is further provided with a connecting hole (311) which penetrates up and down, and the connecting hole (311) is matched with the punch (211).

4. A bending and punching module according to claim 3, characterized in that said elastic member (30) comprises a compression spring adapted to be fitted over said punch (211).

5. The bending and punching module according to claim 1, further comprising bearings (22), wherein the bearings (22) are pivotally connected to two sides of the bending groove (21), the contour surfaces of the bearings (22) slightly protrude out of the side walls of the bending groove (21), the upper surface of the plate to be bent (200') is in rolling connection with the bearings (22) when the lower die (10) is matched with the upper die (20), and the shortest span of the contour surfaces of the two bearings (22) in the first direction is equal to the outer contour width of the U-shaped plate (200) in the first direction.

6. A bend-punching module according to claim 5, characterised in that said bearing (22) is detachably connected to said bending groove (21) by means of fasteners.

7. The bending and punching module according to claim 1, further comprising a pair of limiting plates (12), said limiting plates (12) being arranged along a first direction at intervals on both sides of the support table (11) of the lower die (10) to form limiting cavities (12A), said plate to be bent (200') being adapted to fit within said limiting cavities (12A).

8. A bend-punching module according to claim 7, characterised in that the span of the limiting cavity (12A) in the first direction is equal to the span of the outer contour of the bending groove (21) in the first direction.

9. Bending and punching module according to claim 7, further comprising at least one baffle arranged on at least one side of said confinement cavity (12A) along a second direction to define a second direction of said plate to be bent (200'), wherein said second direction is perpendicular to said first direction.

10. The bend punch module of claim 1 further comprising a guide mechanism, the guide mechanism comprising: the guide post (13) is arranged on the upper die (20) or the lower die (10), and the guide hole (23) is arranged on the lower die (10) or the upper die (20), and the guide post (13) is matched with the guide hole (23).