CN114433725A - Bending die - Google Patents
Bending die Download PDFInfo
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- CN114433725A CN114433725A CN202011190197.1A CN202011190197A CN114433725A CN 114433725 A CN114433725 A CN 114433725A CN 202011190197 A CN202011190197 A CN 202011190197A CN 114433725 A CN114433725 A CN 114433725A
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- material returning
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- 238000005452 bending Methods 0.000 title claims abstract description 269
- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 238000004080 punching Methods 0.000 claims description 9
- 230000000670 limiting effect Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 description 12
- 238000000429 assembly Methods 0.000 description 12
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention provides a bending die, which can realize the synchronous circumferential bending of the side surface of a product, thereby eliminating the stamping problem caused by asynchronous bending. The bending die comprises an upper die and a lower die, the lower die comprises a lower die base, a lower die plate, a lateral part material returning assembly, a corner part material returning assembly, a lateral part bending assembly and a corner part bending assembly, when the bending die is closed, the lower die plate moves downwards under the pressure of the upper die to drive the lateral part material returning assembly and the corner part material returning assembly to synchronously press the lateral part and the corner part of a product, and the upper die moves downwards to drive the lateral part bending assembly and the corner part bending assembly to synchronously bend the lateral part and the corner part of the product. According to the invention, the downward movement of the lower template drives the side material returning component and the corner material returning component to synchronously press the side part and the corner part of the product during die assembly of the die, and the downward movement of the upper template drives the side bending component and the corner bending component to synchronously bend the side part and the corner part of the product, so that the synchronous bending molding of the product by reversely bending the circumferential side surface and the inner hook is realized, and the problem of die stamping is solved.
Description
Technical Field
The invention belongs to the technical field of stamping dies, and particularly relates to a bending die.
Background
With the popularity of products without frame structures such as televisions, flat panels and the like, the front left and right three-side bending structures of the back plate parts must be provided with reverse folds towards the inner sides of the products, such as reverse fold inner hooks 2 on a back plate 1 of the television shown in fig. 1 and 2. According to the requirement of the product structure and the appearance requirement of the bent edge, compared with the traditional bending process, the die has to be correspondingly improved.
For similar part structures, the bending mode adopted at present is a side-pulling type sliding block, namely the side-pulling type sliding block is used on the straight edge and the corner of a product. Although the bending on the corners can be realized by the scheme, the sliders in the X, Y direction can enter the die later due to the fact that all the sliders move simultaneously, the sliders at 45 degrees on two corners contact the product first to be bent, and therefore the bending is asynchronous at the beginning, and the stamping problem is caused. This stamping problem requires multiple modifications during the actual debugging process, and cannot be completely eliminated.
In addition, the movement of two 45-degree sliding blocks at an angle is realized, a slotting tool (a driving device) and a pressing block (a guiding and fixing device) are designed, so that the size of a bending block is too large, the structure of the die is too complex, the processing amount is large, and the assembly debugging and the subsequent maintenance of the die are not facilitated.
The current solution has another problem in that the material returning device inside the product also needs to design a horizontally moving slide block, and the necessary tool insertion holes and spring holes need to be machined in the template, which results in poor template strength and may affect the stability of the mold.
Disclosure of Invention
The invention provides a bending die, which can realize the synchronous circumferential bending of the side surface of a product, thereby eliminating the stamping problem caused by asynchronous bending.
In order to achieve the technical purpose, the invention adopts the following technical scheme that the bending die comprises an upper die and a lower die, wherein the lower die comprises:
the lower die holder is fixedly arranged;
the lower template is arranged above the lower die base and can move up and down along the die opening and closing direction of the die;
the lateral material returning assembly is positioned on the outer side of the lateral part of the lower template and is used for pressing the lateral part of the product when the product is bent and formed by reversely bending the inner hook;
the corner material returning component is positioned outside the corner of the lower template and is used for pressing the corner of the product during product reverse bending and inward hook bending forming;
the lateral bending assembly is positioned on the outer side of the lateral material returning assembly and used for bending the lateral part of the product when the product is reversely bent and the inner hook is bent and formed;
the corner bending assembly is positioned on the outer side of the corner material returning assembly and is used for bending the corner of the product during product reverse bending and inward hook bending forming;
when the bending die is closed, the lower die plate moves downwards under the pressure of the upper die to drive the lateral part material returning assembly and the corner part material returning assembly to synchronously press the lateral part and the corner part of the product, and the upper die moves downwards to drive the lateral part bending assembly and the corner part bending assembly to synchronously bend the lateral part and the corner part of the product.
The lower template comprises:
a lower template body;
the lower stop plate is arranged below the lower template body and fixedly connected with the lower template body into a whole;
the side material returning assembly is located on the outer side of the side portion of the lower template body, and the corner material returning assembly is located on the outer side of the corner portion of the lower template body.
The side material returning assembly comprises:
the side material returning slide block is horizontally and slidably arranged on the lower stop plate to be close to or far away from the side part of the lower template body;
the lateral material returning slotting tool is fixedly arranged on the lower die base and is positioned on the inner side of the lateral material returning slide block;
the side material returning reset component is arranged on the lower template body or the lower stop plate and is used for driving the side material returning slide block to reset;
the lateral material returning slotting tool and the lateral material returning sliding block are provided with inclined guide parts which are matched with each other, so that when the lower template moves downwards, the lateral material returning slotting tool pushes the lateral material returning sliding block to realize sliding, and then the lateral material returning reset component is stretched or compressed.
The corner stripper assembly comprises:
the corner material returning sliding block is horizontally and slidably arranged on the lower template body to be close to or far away from the corner of the lower template body;
the corner material returning reset component is arranged on the lower template body or the lower stop plate and is used for driving the corner material returning sliding block to reset;
the corner material returning slide blocks are abutted against two adjacent end faces of two adjacent side material returning slide blocks, and when the side material returning slide blocks slide towards the side direction far away from the lower template body, the corner material returning slide blocks are pushed to slide towards the corner direction far away from the lower template body.
The abutting surfaces of the corner material returning sliding block and the side material returning sliding block are inclined surfaces in sliding fit.
The side bending assembly comprises:
the bending slotting tool is arranged above the lower die base and can move up and down along the die opening and closing direction of the die;
the bending sliding block is provided with a side bending punch head and can be horizontally and slidably arranged on the lower die seat so that the side bending punch head is close to or far away from the side material returning sliding block;
the side bending reset component is arranged on the lower die base and used for driving the bending sliding block to reset;
the bending slotting tool and the bending sliding block are provided with inclined guide parts which are matched with each other, so that the bending slotting tool pushes the bending sliding block to slide when the upper die moves downwards, and the side part bending reset component is stretched or compressed.
The corner bending assembly includes:
the corner bending punch can slide towards the direction far away from or close to the corner material returning slide blocks, the corner bending punch is positioned on the inner sides of the two adjacent bending slide blocks, and the outer side faces of the corner bending punch are abutted against the two bending slide blocks simultaneously;
and the telescopic connecting component is used for movably connecting the corner bending punch to the end part of one side bending punch adjacent to the corner bending punch, so that the corner bending punch and the bending slide block synchronously slide, and the corner bending punch can be driven to move close to or away from the side bending punch.
The corner bending punch and the side bending punch are configured such that the punching surface of the corner bending punch and the punching surface of the side bending punch are always coplanar during the synchronous sliding.
And a guide rail is fixedly arranged between every two adjacent bending sliding blocks, is positioned above the adjacent ends of the two adjacent bending sliding blocks and is in guide fit with the bending sliding blocks.
The lower die base is further fixedly provided with a rest knife which corresponds to the bending sliding block, the rest knife is located on the outer side of the bending sliding block and used for limiting the maximum sliding distance of the bending sliding block away from the lateral material returning sliding block, and the lateral bending reset component is installed on the rest knife.
Compared with the prior art, the invention has the following advantages and positive effects: the lower die plate of the lower die can move up and down along the die opening and closing direction of the die, the downward movement of the lower die plate drives the lateral part material returning component and the corner part material returning component to synchronously press the lateral part and the corner part of the product when the die is closed, and the downward movement of the upper die drives the lateral part bending component and the corner part bending component to synchronously bend the lateral part and the corner part of the product, so that the synchronous bending and forming of the product by reversely bending the circumferential side surface and the inner hook are realized, and the die mark problem caused by asynchronous bending is solved.
Drawings
FIG. 1 is a perspective view of a prior art TV backplane;
FIG. 2 is an enlarged view of the "I" portion of FIG. 1;
FIG. 3 is a schematic structural view of a bending die according to an embodiment;
FIG. 4 is an enlarged view of the "I" portion of FIG. 3;
FIG. 5 is a structural view of the integral arrangement of a side material returning component and a corner material returning component of the bending die according to the embodiment;
FIG. 6 is an enlarged view of the "I" portion of FIG. 5;
FIG. 7 is a diagram of an overall arrangement of a side bending component and a corner bending component of the bending die according to the embodiment;
fig. 8 is an enlarged view of the "I" portion in fig. 7.
Reference numerals: 1-product; 2-folding the inner hook reversely;
100-lower die; 110-a lower die holder; 111-a lower die holder body; 112-lower splint; 120-lower template; 121-lower template body; 122-lower stop plate; 130-side stripper assembly; 131-side material returning slide block; 131A-a first guide ramp; 131B-end face; 132-side reject slotting tool; 132A-a second guide ramp; 133-side return reset feature; 140-corner reject assembly; 141-corner return slide block; 142-corner return reset feature; 150-side bending assembly; 151-bending slotting tool; 151A-third guide ramp; 152-bending the sliding block; 152A-a fourth guide ramp; 153-side bend reset feature; 154-side bending punch; 154A-stamping face; 155-floating fixed pins; 156-a spring element; 157-a guide rail; 158-leaning against a knife; 159-a slide; 160-corner bend assembly; 161-corner bending punch; 161A-stamping face; 162-telescoping connection section.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 3 to 8, the bending mold of the present embodiment includes an upper mold 100 and a lower mold 100, wherein the upper mold is similar to the prior art and is omitted in the drawings. The lower die 100 comprises a lower die base 110, a lower die plate 120, a side material returning assembly 130, a corner material returning assembly 140, a side bending assembly 150 and a corner bending assembly 160; the lower die holder 110 is fixedly arranged, and the lower template 120 is arranged above the lower die holder 110 and can move up and down along the die opening and closing direction (i.e. the direction indicated by arrows in fig. 3 and 4); the side material returning assembly 130 is located at the outer side of the lower template 120 and used for pressing the side of the product (i.e. the part a in fig. 1) when the product is bent and formed; the corner material returning component 140 is located outside the corner of the lower template 120 and used for pressing the corner of the product (namely, the included corner between adjacent parts a in fig. 1) when the product is bent and formed; the side bending component 150 is positioned at the outer side of the side material returning component 130 and is used for bending the side part of the product when the product is bent reversely and the inner hook is bent and formed; the corner bending component 160 is positioned on the outer side of the corner material returning component 140 and is used for bending the corner of the product during product reverse bending and inward hook bending molding; when the bending die of the embodiment is closed, the lower die plate 120 moves downward under the pressure of the upper die to drive the side material returning assembly 130 and the corner material returning assembly 140 to synchronously press the side part and the corner part of the product, and the upper die moves downward to drive the side bending assembly 150 and the corner bending assembly 160 to synchronously bend the side part and the corner part of the product.
Specifically, in this embodiment, the lower mold plate 120 is connected to the lower mold base 110 through a plurality of springs, and the lower mold base 110 is provided with a contour sleeve and a guide post for limiting and guiding the up-and-down movement of the lower mold plate 120.
In this embodiment, a product 1 is used as a back panel of a television, and three side portions (i.e. 3 portions a in fig. 1) of the product need to be bent to form a reverse-bending inner hook, so that the number of the side material returning assemblies 130 and the number of the side material bending assemblies 150 are 3, and the side material returning assemblies and the side material bending assemblies are respectively corresponding to three portions a of the product 1 one by one, the number of the corner material returning assemblies 140 is 2, and the corner material returning assemblies are respectively located between two adjacent side material returning assemblies 130, and the number of the corner material bending assemblies 160 is 2, and the corner material returning assemblies are respectively located between two adjacent side material bending assemblies 150.
When the bending die of the embodiment works, a product 1 is placed on the lower die plate 120 downwards, for the product 1 formed by reversely bending the inner hook, the side material returning component 130 and the corner material returning component 140 are positioned on the inner side of the side part of the product 1, and the side bending component 150 and the corner bending component 160 are positioned on the outer side of the side part of the product 1; when the upper die moves downwards along with the press machine to contact with the upper die and the lower die, at the moment, because the spring force of the upper die is relatively large, the spring between the lower die plate 120 and the lower die base 110 is firstly compressed, the lower die plate 120 firstly moves downwards under the pressure of the upper die, when the lower die plate 120 moves downwards, the side material returning assembly 130 and the corner material returning assembly 140 are driven to synchronously press the side parts and the corners of the product, when the lower die plate 120 moves downwards to the limit position, the upper die continues to move downwards to drive the side bending assembly 150 and the corner bending assembly 160 to synchronously bend the side parts and the corners of the product until the bending action is completed.
Further, as shown in fig. 3 and 4, the lower template 120 in this embodiment includes a lower template body 121 and a lower stop plate 122, and the lower stop plate 122 is disposed below the lower template body 121 and is fixedly connected to the lower template body 121 as a whole; usually, the lower template body 121 is formed by splicing a plurality of small plate bodies, and the lower stop plate 122 is an integral plate, and the area of the integral plate is larger than that of the lower template body 121, so that the lower template body 121 formed by splicing a plurality of small plate bodies forms an integral body. Then, in this embodiment, the side material returning assemblies 130 are located outside the sides of the lower template body 121, and the corner material returning assemblies 140 are located outside the corners of the lower template body 121.
Referring to fig. 3 and 4, the side material returning assembly 130 specifically includes a side material returning slider 131, a side material returning slotting tool 132 and a side material returning resetting part 133, the side material returning slider 131 is horizontally slidably disposed on the lower stop plate 122 to be close to or far away from the side of the lower template body 121, and the side material returning slotting tool 132 is fixedly disposed on the lower die base 110 and located below the inner side of the side material returning slider 131; the side material returning reset component 133 is arranged on the lower template body 121 or the lower stop plate 122 and is used for driving the side material returning slide block 131 to reset; the side stripper slotting tool 132 and the side stripper shoe 131 have cooperating inclined guides.
In this embodiment, the mutually matched inclined guiding portions include a first guiding inclined surface 131A on the side material returning slide block 131 and a second guiding inclined surface 132A on the side material returning slotting tool 132 shown in fig. 4, when the side material returning slide block 131 contacts with the side material returning slotting tool 132, the first guiding inclined surface 131A and the second guiding inclined surface 132A are fitted together, when the lower mold plate 120 moves downward, the side material returning slide 131 is driven to move downward until it contacts the side material returning slotting tool 132, since the side material returning slide block 131 and the side material returning slotting tool 132 are contacted through the first guide inclined plane 131A and the second guide inclined plane 132A, the side material returning slide block 131 can slide, and the side material returning slotting tool 132 is fixed, the side material returning slotting tool 132 pushes the side material returning slide block 131 to slide, thereby stretching or compressing the side returned material returning part 133 to generate a returning pulling force or pushing force to the side returned material slide 131. Referring to fig. 4, the side material returning and returning component 133 is a return spring, which is installed on the lower die plate body 121, and one end of the return spring is connected to the side material returning slide block 131 and located inside the side material returning slide block 131, so that the mold structure is compact, and the mold volume is reduced.
Referring to fig. 5 and 6, the corner material returning assembly 140 in this embodiment includes a corner material returning slider 141 and a corner material returning and returning component 142, wherein the corner material returning slider 141 is horizontally slidably disposed on the lower template body 121 to be slidably close to or far from a corner of the lower template body 121; the corner material returning reset component 142 is arranged on the lower template body 121 or the lower stop plate 122 and is used for driving the corner material returning slide block 141 to reset; the corner material returning slide block 141 abuts against two adjacent end surfaces 131B of two adjacent side material returning slide blocks 131, namely, the corner material returning slide block 141 abuts against the end surface 131B of one side material returning slide block 131, and simultaneously abuts against the end surface 131B of the other adjacent side material returning slide block 131, when the side material returning slide block 131 slides towards the side direction far away from the lower template body 121, the corner material returning slide block 141 is pushed to slide towards the corner direction far away from the lower template body 121, so that synchronous material pressing of the corner material returning assembly 140 and the side material returning assembly 130 is realized.
Further preferably, the corner material returning slider 141 is approximately a right triangle, the end surface 131B of the side material returning slider 131 has a slope portion, and the abutting surfaces of the corner material returning slider 141 and the side material returning slider 131 are slopes in sliding fit, as shown in fig. 5 and 6. The corner material returning slide block 141 slides directly driven by the side material returning slide blocks 131 on the two sides, so that the arrangement of a slotting tool structure for driving the corner material returning slide block 141 to slide can be omitted, the mold structure is simplified, and the mold cost is reduced.
As for the side bending assembly 150, specifically, referring to fig. 3 and 4, it includes a bending slotting tool 151, a bending slider 152 and a side bending reset component 153, the bending slotting tool 151 is disposed above the lower die base 110 and can move up and down along the die opening and closing direction; a side bending punch 154 is arranged on the bending slide block 152, and the bending slide block 152 is horizontally arranged on the lower die base 110 in a sliding manner so that the side bending punch 154 can slide to be close to or far away from the side material returning slide block 131; the side bending reset component 153 is arranged on the lower die base 110 and is used for driving the bending slide block 152 to reset.
The bending slotting tool 151 and the bending sliding block 152 are provided with mutually matched inclined guide parts, the mutually matched inclined guide parts comprise a third guide inclined surface 151A on the bending slotting tool 151 and a fourth guide inclined surface 152A on the bending sliding block 152 shown in fig. 4, when the bending slotting tool 151 and the bending sliding block 152 are contacted, the third guide inclined surface 151A and the fourth guide inclined surface 152A are matched and attached, when an upper die moves downwards to contact the bending slotting tool 151, the upper die presses the bending slotting tool 151 to continue to move downwards, and when the third guide inclined surface 151A of the bending slotting tool 151 is contacted with the fourth guide inclined surface 152A of the bending sliding block 152, the bending slotting tool 151 can push the bending sliding block 152 to move horizontally inwards due to the fact that the bending sliding block 152 can slide, and then the side bending reset component 153 is stretched or compressed, so that reset pulling force or pushing force is generated on the bending sliding block 151.
Specifically, as shown in fig. 4, in the present embodiment, the lift fixing pin 155 is vertically installed on the lower die base 110, and the bending insert 151 is fastened in the top threaded hole of the lift fixing pin 155 by a screw. For realizing the automatic re-setting of the slotting tool 151 that bends after the die sinking, still vertically install spring part 156 at the die holder 110, the bottom of buoyancy lift fixed pin 155 is connected or is supported on the top of spring part 156, when the slotting tool 151 that bends along with last mould downstream, compresses spring part 156 through buoyancy lift fixed pin 155, and then the slotting tool 151 that bends can realize automatic re-setting when the die sinking under the elasticity restoring force of spring part 156.
In this embodiment, referring to fig. 7 and 8, the corner bending assembly 160 includes a corner bending punch 161 and a telescopic connecting component 162, the corner bending punch 161 can slide horizontally in a direction away from or close to the corner material returning slider 132, the corner bending punch 161 is located inside two adjacent bending sliders 152, and the outer side of the corner bending punch 161 abuts against the two bending sliders 152; the telescopic connection member 162 movably connects the corner bending punch 161 to an end of one of the side bending punches 154 adjacent to the corner bending punch 161, so that the side bending punch 154 slides along the bending slider 152 to synchronously slide the corner bending punch 161, thereby synchronously bending the side bending assembly 150 and the corner bending assembly 160. The sliding of the corner bending punch 161 is directly driven by the side bending sliders 154 at both sides, and the arrangement of the slotting tool structure can be omitted, thereby simplifying the die structure and reducing the die cost.
Since it is necessary to ensure that the so-called punching profiles of the side bending punch 154 and the corner bending punch 161 are matched with the product side profile during the synchronous bending of the side bending assembly 150 and the corner bending assembly 160, the telescopic connecting part 162 must also be able to drive the corner bending punch 161 to slide toward or away from the side bending punch 154, and if the bending slider 152 drives the side bending punch 154 and the corner bending punch 161 connected thereto to synchronously retract and slide inward during the die-closing bending, in order to avoid interference between the corner bending punch 161 and another adjacent side bending punch 154, the telescopic connecting part 162 pulls the corner bending punch 161 to retract close to the side bending punch 154 connected thereto to avoid another side bending punch 154.
Specifically, the retractable connecting member 162 is a spring in this embodiment, and the spring is simple in structure, easy to install and requires no additional energy for power and control. Of course, it may also be a component which can realize extension and retraction, such as an oil cylinder, an air cylinder, etc.
Still further, the corner bending punch 161 and the side bending punch 154 are configured such that the punching surface 161A of the corner bending punch 161 and the punching surface 154A of the side bending punch 154 are always coplanar during the synchronous sliding to effectively ensure the corner bending punch 161 and the side bending punch 154 to be synchronously bent. Specifically, as shown in fig. 8, a notch-shaped slide 159 is formed on the side bending punch 154, one end of the corner bending punch 161 is inserted into the slide 159, and the slide acts as a limit to the corner bending punch 161 so that the corner bending punch 161 does not move relative to the side bending punch 154 in the sliding direction of the side bending punch 154, thereby ensuring that the punching surface 161A of the corner bending punch 161 and the punching surface 154A of the side bending punch 154 are always coplanar.
Referring to fig. 7 and 8, a guide rail 157 is fixedly disposed between two adjacent bending sliders 152, and the guide rail 157 is located above adjacent ends of the two adjacent bending sliders 152 and is in guiding fit with the bending sliders 152. On one hand, the guide rail 157 limits the bending slide block 152, so that the sliding direction of the bending slide block 152 is fixed, and shaking is avoided, for example, the vertical bending slide block 152 at the left side can only horizontally slide left and right, and the horizontal bending slide block 152 at the lower part can only horizontally slide up and down; on the other hand, the guide rail 157 is located above the bending slider 152, so that the bending slider 152 can be limited on the lower die holder 110, the bending slider is prevented from being separated from the lower die holder 110, and the slider can be ensured to reliably slide and run.
In addition, referring to fig. 4, a knife rest 158 corresponding to the bending slider 152 is further fixedly disposed on the lower die holder 110, the knife rest 158 is located outside the bending slider 152 and is used for limiting the maximum sliding distance of the bending slider 152 away from the side material returning slider 131, and the side bending reset component 153 is mounted on the knife rest 158. On one hand, the knife 158 has a limiting effect on the bending slider 152 in the sliding direction, and when the bending slider 152 slides to the direction away from the side material returning slider 131 along with the mold opening action of the upper mold until the bending slider 152 contacts the knife 158, the bending slider 152 slides outwards to a certain position. In this embodiment, the side bending reset component 153 is a spring horizontally mounted on the knife 158 and located outside the bending slider 152, and the inner end of the spring is connected to the bending slider 152.
In this embodiment, the lower die holder 110 specifically includes a lower die holder body 111 and a lower clamp plate 112 located above the lower die holder body 111, and the lower clamp plate 112 and the lower die holder body 111 are fixedly connected into a whole and have an area smaller than that of the lower die holder body 111. The bending slider 152, the rest knife 158 and the bending slotting knife 151 are specifically arranged on the lower clamp plate 112, and the spring piece 156 is arranged on the lower die holder body 111.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a mould of bending, includes mould and lower mould, its characterized in that, the lower mould includes:
the lower die holder is fixedly arranged;
the lower template is arranged above the lower die base and can move up and down along the die opening and closing direction of the die;
the lateral material returning assembly is positioned on the outer side of the lateral part of the lower template and is used for pressing the lateral part of the product when the product is bent and formed by reversely bending the inner hook;
the corner part material returning component is positioned on the outer side of the corner part of the lower template and is used for pressing the corner part of the product during product reverse-bending and inward-hooking bending forming;
the lateral bending assembly is positioned on the outer side of the lateral material returning assembly and used for bending the lateral part of the product when the product is reversely bent and the inner hook is bent and formed;
the corner bending assembly is positioned on the outer side of the corner material returning assembly and is used for bending the corner of the product during product reverse bending and inward hook bending forming;
when the bending die is closed, the lower die plate moves downwards under the pressure of the upper die to drive the lateral part material returning assembly and the corner part material returning assembly to synchronously press the lateral part and the corner part of the product, and the upper die moves downwards to drive the lateral part bending assembly and the corner part bending assembly to synchronously bend the lateral part and the corner part of the product.
2. The bending die of claim 1, wherein the lower die plate comprises:
a lower template body;
the lower stop plate is arranged below the lower template body and fixedly connected with the lower template body into a whole;
the side material returning assembly is located on the outer side of the side portion of the lower template body, and the corner material returning assembly is located on the outer side of the corner portion of the lower template body.
3. The bending die of claim 2, wherein the side stripper assembly comprises:
the side material returning slide block is horizontally and slidably arranged on the lower stop plate to be close to or far away from the side part of the lower template body;
the lateral material returning slotting tool is fixedly arranged on the lower die base and is positioned on the inner side of the lateral material returning slide block;
the side material returning reset component is arranged on the lower template body or the lower stop plate and is used for driving the side material returning slide block to reset;
the lateral material returning slotting tool and the lateral material returning sliding block are provided with inclined guide parts which are matched with each other, so that when the lower template moves downwards, the lateral material returning slotting tool pushes the lateral material returning sliding block to realize sliding, and then the lateral material returning reset component is stretched or compressed.
4. The bending die of claim 3, wherein the corner stripper assembly comprises:
the corner material returning sliding block is horizontally and slidably arranged on the lower template body to be close to or far away from the corner of the lower template body;
the corner material returning reset component is arranged on the lower template body or the lower stop plate and is used for driving the corner material returning sliding block to reset;
the corner material returning slide blocks are abutted against two adjacent end faces of two adjacent side material returning slide blocks, and when the side material returning slide blocks slide towards the side direction far away from the lower template body, the corner material returning slide blocks are pushed to slide towards the corner direction far away from the lower template body.
5. The bending die of claim 4,
the abutting surfaces of the corner material returning sliding block and the side material returning sliding block are inclined surfaces in sliding fit.
6. The bending die of claim 1, wherein the side bending assembly comprises:
the bending slotting tool is arranged above the lower die base and can move up and down along the die opening and closing direction of the die;
the bending sliding block is provided with a side bending punch head and can be horizontally and slidably arranged on the lower die seat so that the side bending punch head is close to or far away from the side material returning sliding block;
the side bending reset component is arranged on the lower die base and used for driving the bending sliding block to reset;
the bending slotting tool and the bending sliding block are provided with inclined guide parts which are matched with each other, so that the bending slotting tool pushes the bending sliding block to slide when the upper die moves downwards, and the side part bending reset component is stretched or compressed.
7. The bending die of claim 6, wherein the corner bending assembly comprises:
the corner bending punch can slide towards the direction far away from or close to the corner material returning slide blocks, the corner bending punch is positioned on the inner sides of the two adjacent bending slide blocks, and the outer side faces of the corner bending punch are abutted against the two bending slide blocks simultaneously;
and the telescopic connecting component is used for movably connecting the corner bending punch to the end part of one side bending punch adjacent to the corner bending punch, so that the corner bending punch and the bending slide block synchronously slide, and the corner bending punch can be driven to move close to or away from the side bending punch.
8. The bending die according to claim 7,
the corner bending punch and the side bending punch are configured such that the punching surface of the corner bending punch and the punching surface of the side bending punch are always coplanar during the synchronous sliding.
9. The bending die of claim 6,
and a guide rail is fixedly arranged between every two adjacent bending sliding blocks, is positioned above the adjacent ends of the two adjacent bending sliding blocks and is in guide fit with the bending sliding blocks.
10. The bending die of claim 6,
the lower die base is further fixedly provided with a rest knife which corresponds to the bending sliding block, the rest knife is located on the outer side of the bending sliding block and used for limiting the maximum sliding distance of the bending sliding block away from the lateral material returning sliding block, and the lateral bending reset component is installed on the rest knife.
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| CN202011190197.1A CN114433725B (en) | 2020-10-30 | 2020-10-30 | Bending die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011190197.1A CN114433725B (en) | 2020-10-30 | 2020-10-30 | Bending die |
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| CN114433725B CN114433725B (en) | 2024-03-12 |
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| CN109570363A (en) * | 2018-12-06 | 2019-04-05 | 青岛海信模具有限公司 | A kind of lower Bending Mould |
| CN211386578U (en) * | 2019-08-13 | 2020-09-01 | 无锡科里斯特科技有限公司 | One-step completed inner buckle bending die |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20050034500A (en) * | 2003-10-09 | 2005-04-14 | 주식회사 동양슬라이드 | Plastic working apparatus for bending and forming |
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| CN101653801A (en) * | 2009-08-26 | 2010-02-24 | 昆山联德精密机械有限公司 | Stamping die for forming punching scrap and peripheral flanging simultaneously |
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| CN211386578U (en) * | 2019-08-13 | 2020-09-01 | 无锡科里斯特科技有限公司 | One-step completed inner buckle bending die |
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| Publication number | Publication date |
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| CN114433725B (en) | 2024-03-12 |
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