CN107952830B - Bending structure and bending die - Google Patents
Bending structure and bending die Download PDFInfo
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- CN107952830B CN107952830B CN201711235361.4A CN201711235361A CN107952830B CN 107952830 B CN107952830 B CN 107952830B CN 201711235361 A CN201711235361 A CN 201711235361A CN 107952830 B CN107952830 B CN 107952830B
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- die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/02—Ejecting devices
- B21D45/04—Ejecting devices interrelated with motion of tool
Abstract
The invention relates to the technical field of dies, and aims to provide a bending structure and a bending die which are simple in structure and capable of eliminating bending fillet stacking extrusion of a bending workpiece. The bending structure comprises a bending female die and a bending male die, wherein the bending female die comprises an inner female die and an outer female die, and the bending male die comprises an inner male die and an outer male die; the outer male die is matched with the outer female die and used for bending the outer side surface of the step of the workpiece to be bent with the step structure into a round angle; the inner male die is matched with the inner concave die and used for bending the inner side surface of the step of the workpiece to be bent into a round angle; the inner female die is provided with an arc inner side surface matched with a fillet of the inner side surface of a step of the bending workpiece, a protruding structure is arranged on the arc inner side surface, and a groove structure matched with the protruding structure is correspondingly arranged on the inner male die.
Description
Technical Field
The invention relates to the technical field of dies, in particular to a bending structure and a bending die.
Background
At present, in order to ensure the assembly of the panel and the top cover of the outdoor unit of the air conditioner to be beautiful and the gap requirement, the assembly position of the panel and the top cover of the outdoor unit is generally provided with a step structure a according to the structural requirement, and as shown in fig. 1-3, three large-R-angle bends are designed at the step position according to the structural requirement. Before the workpiece with the step structure a is bent, the sizes of the plates of the bending areas of the inner side surface of the step and the outer side surface of the step are consistent, namely the size of the plate of the inner side surface of the step is equal to the size L1 of the plate of the outer side surface of the step. After the bending, the curvatures of the inner side surface of the step and the outer side surface of the step are inconsistent, the linear dimension L2 of the arc region of the inner side surface of the step is smaller than the dimension L1 of the plate material in the region before the bending, the phenomenon of material extrusion during the bending can occur on the inner side surface, the material extrusion at the bending position of the inner side of the step is serious, and the assembly of the top cover and the appearance of a product.
Disclosure of Invention
Based on the technical problem, the invention aims to provide the bending structure and the bending die which are simple in structure and capable of eliminating the bending fillet stacking extrusion of the bending workpiece.
A bending structure comprises a bending female die and a bending male die, wherein the bending female die comprises an inner female die and an outer female die, and the bending male die comprises an inner male die and an outer male die; the outer male die is matched with the outer female die and used for bending the outer side surface of the step of the workpiece to be bent with the step structure into a round angle; the inner male die is matched with the inner concave die and used for bending the inner side surface of the step of the workpiece to be bent into a round angle; the inner female die is provided with an arc inner side surface matched with a fillet of the inner side surface of a step of the bending workpiece, a protruding structure is arranged on the arc inner side surface, and a groove structure matched with the protruding structure is correspondingly arranged on the inner male die.
In one embodiment, the projection structure is a corrugated projection and the groove structure is a corrugated groove.
In one embodiment, the protrusions of the corrugated protrusions are uniformly arranged along the circumferential direction of the arc inner side surface of the inner concave die.
A bending die comprises any one of the bending structures, the bending die comprises an upper die part and a lower die part, the upper die part comprises an upper stripper plate and a bending female die, the lower die part comprises a lower die plate and a bending male die, the upper stripper plate is arranged on the upper die part, the upper stripper plate is matched with the lower die plate, a workpiece is pressed when the die is closed, and deformation of the workpiece in the bending process is prevented; the bending female die is arranged on one side of the upper die part, and the bending male die is arranged on one side of the lower die plate and is opposite to the bending female die.
In one embodiment, the upper die part further comprises an upper die base and an upper clamping plate, the upper clamping plate is arranged between the upper die base and the upper stripper plate, and the upper clamping plate is fixedly connected with the upper die base.
In one embodiment, the upper stripper plate is connected with the upper die base through a first elastic piece, and the upper stripper plate can be compressed or reset through the first elastic piece so as to be far away from or close to the upper die base.
In one embodiment, the bending female die is arranged on the upper clamping plate and can rotate along the bending direction; the upper die part also comprises a pressing component which is abutted against the top of the bending female die so that the arc inner side surface of the bending female die and the fillet of the bending workpiece are staggered and arranged in an inclined manner at an angle; when the bending die is bent, the punch drives the upper die to move downwards, the upper stripper plate is contacted with a workpiece to be bent to compress the first elastic piece, the bending die and the upper stripper plate move relatively, meanwhile, the upper stripper plate generates acting force on the bending die to drive the bending die to rotate, and meanwhile, the pressing assembly is compressed until the bending die rotates to a bending position.
In one embodiment, the pressing component comprises an ejector pin and a second elastic piece, one end of the second elastic piece is connected with the tail of the ejector pin, the other end of the second elastic piece is fixedly connected with the upper die base, the head of the ejector pin extends out of the upper clamping plate and is abutted to the top of the bending female die, when the die is opened, the arc inner side surface of the bending female die and the round angle of a bending workpiece are staggered and arranged in an inclined mode, when the die is closed, the upper stripper plate can generate acting force on the bending female die to compress the second elastic piece, and the bending female die rotates to a bending position to complete bending.
In one embodiment, the upper die part further comprises an upper supporting plate, and the upper supporting plate is arranged above the upper die holder and is fixed with the upper die holder; the lower die part also comprises a lower die base and a lower supporting plate, the lower die base is fixedly arranged on the lower supporting plate, and the lower die plate is fixed on the lower die base.
Above-mentioned bending structure and mould of bending have increased protruding structure at the inner cavity die, and the back of bending, the fillet department of bending of medial surface forms unsmooth shape, has increased the inboard facial line size of step, eliminates to pile up crowded material. Not only the aesthetic degree of the product appearance is improved, but also the assembly of the panel product is improved.
Drawings
Fig. 1 is a schematic structural view of a conventional outdoor unit panel;
fig. 2 is an exploded view of the outdoor unit panel of fig. 1;
FIG. 3 is an enlarged view taken at I in FIG. 2;
FIG. 4 is a schematic structural view of the bending mold of the present invention, which is shown in an open state;
FIG. 5 is a schematic structural diagram of the bending mold of the present invention, which shows a mold closing state;
FIG. 6 is an enlarged view taken at II in FIG. 4;
FIG. 7 is a schematic structural diagram of an inner concave die of the bending structure of the present invention;
FIG. 8 is a schematic structural view of an inner male die of the bending structure of the invention;
FIG. 9 is an external view of a bent workpiece;
description of reference numerals:
a workpiece 100 to be bent;
an upper die portion 200;
bending the female die 210; an inner concave die 211; an outer female die 212; the raised structures 213;
an upper tray 220;
an upper die base 230;
an upper clamp plate 240;
an upper stripper plate 250;
a first elastic member 260;
a pressure-activated assembly 270; a thimble 271; the second elastic member 272;
a lower die portion 300;
bending the male die 310; an inner male die 311; a groove structure 313;
a lower plate 320;
a lower die holder 330;
a lower die plate 340;
Detailed Description
Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings, but which can be embodied in many different forms and varied in the manner defined and covered by the claims.
Referring to fig. 4 and 5, a bending structure in one embodiment of the present invention is used for bending a workpiece having a step structure. The bending structure of the present invention includes a bending die 210 and a bending punch 310. As shown in fig. 6, the bending die 210 includes an inner die 211 and an outer die 212, and the bending punch 310 includes an inner punch 311 and an outer punch. The outer male die is matched with the outer female die 212 and used for bending the outer side surface of the step of the workpiece 100 to be bent with the step structure into a round angle. The inner male die 311 is matched with the inner female die 211 and is used for bending the inner side surface of the step of the workpiece 100 to be bent into a round angle. As shown in fig. 7 and 8, the inner concave die 211 has a circular arc inner side surface matched with a circular bead of the inner side surface of the step of the bending workpiece, a convex structure 213 is arranged on the circular arc inner side surface, and a groove structure 313 matched with the convex structure 213 is correspondingly arranged on the inner convex die 311.
In the bending structure, the convex structures 213 are additionally arranged on the inner concave die 211, and after the bending, as shown in fig. 9, concave-convex shapes are formed at the bending fillets on the inner side surface, so that the size of the surface line on the inner side of the step is increased, and stacking and extruding are eliminated. Not only improves the aesthetic degree of the appearance of the product, but also improves the assembly of the panel product.
Specifically, the convex structures 213 on the female die 211 are wave protrusions, and correspondingly, the concave structures 313 of the female die 311 are wave grooves. The number of the protrusions of the corrugated protrusions and the height of the protrusions are reasonably designed according to the bending curvature and the sizes of the front and rear inner side facial lines. In other embodiments, the protrusion structures 213 are not limited to the above-mentioned wave-shaped protrusions, but may be designed as triangular saw-tooth-shaped protrusions or rectangular tooth-shaped protrusions according to the structural requirements.
Further, a plurality of protrusions of the corrugated protrusion are uniformly arranged along the circumferential direction of the inner side surface of the circular arc of the concave die 211. I.e. the corrugation lobes are regular corrugation lobes and correspondingly the corrugation grooves are also regular corrugation grooves. Through the regular ripple is protruding, the fillet department of bending at the medial surface of the work piece of bending forms regular ripple shape, has further improved the pleasing to the eye degree of panel product outward appearance and has improved the assembly of panel product.
The invention also relates to a bending die, as shown in fig. 4, the bending die comprises an upper die part 200 and a lower die part 300. The upper mold part 200 includes an upper stripper plate 250 and the above-mentioned bending die 210, and the lower mold part 300 includes a lower mold plate 340 and the above-mentioned bending die 310. The upper stripper plate 250 is correspondingly arranged above the lower template 340, and the upper stripper plate 250 is matched with the lower template 340 to clamp the workpiece 100 to be bent. The bending female die 210 is arranged on one side of the upper stripper plate 250, the bending male die 310 is arranged on one side of the lower die plate 340 and is opposite to the bending female die 210, and the bending female die 210 and the bending male die 310 are matched to bend the workpiece 100 to be bent into a round angle, wherein the workpiece has a step structure.
Further, the upper mold part 200 further includes an upper mold base 230 and an upper clamp plate 240, and the upper stripper plate 250 is movably connected to the upper mold base 230, and the upper stripper plate 250 can be moved toward or away from the upper mold base 230 by being compressed and reset by the first elastic member 260. The upper clamp plate 240 is disposed between the upper die holder 230 and the upper stripper plate 250, and is fastened to the upper die holder 230 by bolts. The bending die 210 is disposed on one side of the upper plate 240 and connected to the upper plate 240.
Further, the upper stripper plate 250 is connected to the upper die base 230 by a first elastic member 260, and the upper stripper plate 250 can approach or depart from the upper die base 230 by the first elastic member 260. Preferably, the first elastic member 260 is provided in plurality, and is uniformly disposed between the upper stripper plate 250 and the upper die base 230. The first elastic member 260 is preferably a spring, one end of which is fixed in the upper mold base 230 and the other end of which passes through the upper clamping plate 240 and then is connected to the upper stripper plate 250.
Further, the bending die 210 is provided on the upper plate 240 and can rotate in a bending direction. The inner concave die 211 and the outer concave die 212 are fixedly arranged side by side. As shown in fig. 6, the upper die portion 200 further includes a pressing assembly 270, and the pressing assembly 270 abuts against the top of the bending female die 210, so that the arc inner side surface of the bending female die 210 and the round corner of the workpiece to be bent are arranged in a staggered angle and inclined manner. When the die is closed and bent, the punch drives the upper die part to move downwards, the stripper plate 250 is contacted with the workpiece 100 to be bent, the first elastic part 260 is compressed, the bending female die 210 and the stripper plate 250 generate relative motion, meanwhile, the upper stripper plate 250 generates acting force on the bending female die 210 to drive the bending female die 210 to rotate until the bending female die 210 rotates to a bending position, namely, the position of the inner side surface of the arc of the bending female die 210 corresponding to the fillet of the workpiece to be bent, and the bending of the workpiece 100 to be bent is completed. The pressing assembly 270 is compressed during the rotation of the bending die 210. After the die is opened, the bending female die 210 is returned to be inclined under the action of the pressing component 270, so that the die is convenient to demould.
Specifically, the pressing assembly 270 includes a thimble 271 and a second elastic member 272, one end of the second elastic member 272 is connected to the tail of the thimble 271, the other end is fixedly connected to the upper die holder 230, and the head of the thimble 271 extends out of the upper clamp plate and abuts against the top of the bending die 210. When the mold is opened, the arc inner side surface of the bending female mold 210 and the round corner of the bending workpiece 100 are arranged in a staggered angle and inclined manner. When the mold is closed, the stripper plate 250 compresses the second elastic member 272 of the pressing assembly by the acting force on the bending die 210, so that the bending die 210 rotates to the bending position, and the bending is completed.
Further, the upper mold portion 200 further includes an upper supporting plate 220, and the upper supporting plate 220 is disposed above the upper mold base 230 and fixed to the upper mold base 230. The lower mold part 300 further comprises a lower mold base 330 and a lower support plate 320, the lower mold plate 340 is fixed on the lower mold base 330, and the lower mold base 330 is fixedly arranged on the lower support plate 320.
The specific implementation process of the invention is as follows: when the mold is closed, the punch press drives the upper mold part 200 to move downwards, and the upper stripper plate 250 firstly contacts with the workpiece to clamp the workpiece. The mould is constantly closed, takes off flitch 250 and produces the effect of power to bending die 210, and bending die 210 rotates to the position of bending along the axis, and outer die 212, the bottom of indent mould 211 contact with the work piece earlier, begin to bend the work piece, and outer die 212 and indent mould 211 rotate to operating position and with the top plate 240 butt from the inclined position, and simultaneously, the second elastic component 272 of compression pressure subassembly 270 during bending die 210 rotates. And (3) continuously closing the die, bending the outer side surface of the step of the workpiece through the matching of the outer concave die 212 and the outer convex die, and bending the inner side surface of the step of the workpiece through the matching of the inner concave die 211 and the inner convex die 311 to form a corrugated round angle inner side surface. After the bending is completed, the second elastic member 272 is reset, and pushes the bending die 210 to rotate and restore the inclination angle.
According to the bending structure and the bending die, the convex structures 213 are additionally arranged on the inner female die 211, and the bending fillets on the inner side surface after bending form the concave-convex shape, so that the size of the surface line on the inner side of the step is increased, and stacking and extruding are eliminated. Not only the aesthetic degree of the appearance of the product is improved, but also the assembly of the panel product can be improved; the bending female die is automatically inclined and opened after the die is opened through the pressing component, so that the die is convenient to demould.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present 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 (7)
1. A bending structure is characterized by comprising a bending female die and a bending male die, wherein the bending female die comprises an inner female die and an outer female die, and the bending male die comprises an inner male die and an outer male die; the outer male die is matched with the outer female die and used for bending the outer side surface of the step of the workpiece to be bent with the step structure into a round angle; the inner male die is matched with the inner concave die and used for bending the inner side surface of the step of the workpiece to be bent into a round angle; the inner female die is provided with an arc inner side surface matched with a fillet of the inner side surface of a step of the bending workpiece, a convex structure is arranged on the arc inner side surface, and a groove structure matched with the convex structure is correspondingly arranged on the inner male die; the convex structures are corrugated protrusions, and the groove structures are corrugated grooves; the convex protrusions of the corrugation are uniformly arranged along the circumferential direction of the inner side surface of the circular arc of the inner concave die, and a regular corrugation shape is formed at the bending fillet of the inner side surface of the bending workpiece.
2. A bending die, characterized by comprising the bending structure according to claim 1, wherein the bending die comprises an upper die part and a lower die part, the upper die part comprises an upper stripper plate and the bending female die, the lower die part comprises a lower die plate and the bending male die, the upper stripper plate is arranged on the upper die part, the upper stripper plate is matched with the lower die plate, a workpiece is pressed when the die is closed, and deformation of the workpiece in the bending process is prevented; the bending female die is arranged on one side of the upper die part, and the bending male die is arranged on one side of the lower die plate and is opposite to the bending female die.
3. The bending die of claim 2, wherein the upper die portion further comprises an upper die base and an upper clamping plate, the upper clamping plate is arranged between the upper die base and the upper stripper plate, and the upper clamping plate is fastened to the upper die base.
4. The bending die of claim 3, wherein the upper stripper plate is connected with the upper die base through a first elastic member, and the upper stripper plate can be compressed or reset through the first elastic member so as to be away from or close to the upper die base.
5. The bending die of claim 4, wherein the bending female die is arranged on the upper clamping plate and can rotate along the bending direction; the upper die part also comprises a pressing component which is abutted against the top of the bending female die so that the arc inner side surface of the bending female die and the fillet of the bending workpiece are staggered and arranged in an inclined manner at an angle; when the bending die is bent, the punch drives the upper die to move downwards, the upper stripper plate is contacted with a workpiece to be bent to compress the first elastic piece, the bending die and the upper stripper plate move relatively, meanwhile, the upper stripper plate generates acting force on the bending die to drive the bending die to rotate, and meanwhile, the pressing assembly is compressed until the bending die rotates to a bending position.
6. The bending die according to claim 5, wherein the pressing assembly comprises an ejector pin and a second elastic piece, one end of the second elastic piece is connected with the tail of the ejector pin, the other end of the second elastic piece is fixedly connected with the upper die base, the head of the ejector pin extends out of the upper clamping plate and is abutted to the top of the bending female die, when the die is opened, the arc inner side surface of the bending female die and the fillet of a bending workpiece are staggered in an inclined angle, when the die is closed, the upper stripper plate can generate acting force on the bending female die to compress the second elastic piece, so that the bending female die rotates to a bending position, and bending is completed.
7. The bending die of claim 3, wherein the upper die portion further comprises an upper supporting plate, and the upper supporting plate is arranged above the upper die base and fixed with the upper die base; the lower die part also comprises a lower die base and a lower supporting plate, the lower die base is fixedly arranged on the lower supporting plate, and the lower die plate is fixed on the lower die base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711235361.4A CN107952830B (en) | 2017-11-30 | 2017-11-30 | Bending structure and bending die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711235361.4A CN107952830B (en) | 2017-11-30 | 2017-11-30 | Bending structure and bending die |
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| Publication Number | Publication Date |
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| CN107952830A CN107952830A (en) | 2018-04-24 |
| CN107952830B true CN107952830B (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711235361.4A Active CN107952830B (en) | 2017-11-30 | 2017-11-30 | Bending structure and bending die |
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| CN (1) | CN107952830B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108500143A (en) * | 2018-04-27 | 2018-09-07 | 安徽工程大学 | A kind of integrated molding stamping die |
| CN114029408B (en) * | 2020-09-07 | 2023-07-14 | 卡奥斯模具(青岛)有限公司 | Bending wrap angle die and bending wrap angle method |
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| JP2006312176A (en) * | 2005-05-06 | 2006-11-16 | Toyota Motor Corp | Apparatus and method for bending work, and apparatus and method for press forming |
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| CN205236814U (en) * | 2015-11-27 | 2016-05-18 | 广东美的暖通设备有限公司 | Bending die |
| KR101671721B1 (en) * | 2016-04-28 | 2016-11-02 | (주)신성정공 | Mold apparatus for spring back preform |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006312176A (en) * | 2005-05-06 | 2006-11-16 | Toyota Motor Corp | Apparatus and method for bending work, and apparatus and method for press forming |
| CN200995243Y (en) * | 2006-09-25 | 2007-12-26 | 佛山市顺德区汉达精密电子科技有限公司 | Bending mould structure |
| CN104759530A (en) * | 2014-01-07 | 2015-07-08 | 青岛海尔模具有限公司 | Metal plate product swing block bent structure and metal plate product mold |
| CN204182781U (en) * | 2014-09-12 | 2015-03-04 | 亿和精密工业（苏州）有限公司 | Bend punching die |
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| KR101671721B1 (en) * | 2016-04-28 | 2016-11-02 | (주)신성정공 | Mold apparatus for spring back preform |
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| CN107952830A (en) | 2018-04-24 |
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Address after: 266100 Zhuzhou Road, Laoshan District, Qingdao, Shandong Province, No. 151 Applicant after: Hisense (Shandong) Air-conditioning Co., Ltd. Address before: 266736 Hisense Road 1, South Village Town, Pingdu City, Qingdao, Shandong Applicant before: Hisense (Shandong) Air-conditioning Co., Ltd. |
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