Wrap angle bending device

Abstract

The utility model discloses a wrap angle bending device which comprises an outer guide column, an upper module and a lower module, and the outer guide column is used for driving the upper module to move in the first direction and to be connected with or separated from the lower module in a pressing mode. The lower module comprises a material placing platform, a bending space and a plurality of lower pasting blocks. The material containing platform is arranged on the top of the lower die set and used for containing products. The bending space is arranged around the material placing platform, and the multiple lower attaching blocks are arranged around the bending space. A plurality of bending knives corresponding to the bending spaces are arranged at the bottom of the upper module, and a convex part is arranged at the bottom of one side, facing the material placing platform, of each bending knife. The bending knives can rotate along the bending space, so that after the upper die set and the lower die set are connected in a pressing mode, the multiple bending knives move into the bending space, abut against the lower attaching block and rotate in the direction close to the material placing platform, the protruding parts at the bottoms of the multiple bending knives are connected with the four edges of the product in a pressing mode at the same time, and the wrap angle bending procedure of the four edges of the product is synchronously conducted; and the four edges do not need to be switched for corner wrapping and bending, so that time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an angle bending device. Background Art

[0002] In the prior art, during the bending process of the corners of the plate, the plate is easily moved due to the extrusion force, which makes it impossible for the plate to remain stable, resulting in uneven extrusion. In addition, when all four sides of the plate need to be bent, it needs to be taken out and placed back and forth to completely extrude and bend the four sides, which is time-consuming and labor-intensive. Utility Model Content

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a corner bending device to solve the problem raised in the above background technology that when all four sides of the plate need to be bent, it needs to be taken out and placed back and forth to completely squeeze and bend the four sides.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is an angle bending device, including an outer guide column, an upper mold group and a lower mold group, wherein: the upper mold group and the lower mold group are arranged relatively along a first direction, and the outer guide column extends along the first direction, and is used to drive the upper mold group to move along the first direction, and to be crimped or separated from the lower mold group. The lower mold group includes a loading platform, a bending space and a plurality of lower sticking blocks. The loading platform extends along a second direction and is arranged on the top of the lower mold group for placing products, and the second direction is perpendicular to the first direction. The bending space is arranged around the loading platform, and the plurality of lower sticking blocks are arranged around the bending space.

[0005] The bottom of the upper die set is provided with a plurality of bending knives corresponding to the bending space, each of the bending knives extends along the first direction, and a convex portion is provided at the bottom facing the side of the material placement platform. The bending knives can rotate along a circumferential direction, and the circumferential direction surrounds the second direction, so that when the upper die set is crimped with the lower die set, the plurality of bending knives move into the bending space, abut against the lower sticking block, and rotate in a direction close to the material placement platform, thereby crimping with the corner of the product to bend it.

[0006] The utility model provides a method of placing a product on a material placing platform. During the process of the upper die group pressing down the lower die group through the outer guide column, a plurality of bending knives arranged at the bottom of the upper die group gradually enter the bending space, and then abut against a plurality of lower sticking blocks around the bending space to produce an inward angle deviation, that is, rotate in the direction where the product is located, so that the convex parts at the bottom of the plurality of bending knives simultaneously press the four sides of the product, and synchronously perform the corner bending process of the four sides of the product, and there is no need to switch the four sides to perform the corner bending separately, thus saving time and effort.

[0007] In some embodiments, the upper mold assembly further includes an upper mold base, a stripper plate, and an inner guide column. The upper mold base and the stripper plate both extend along the second direction. The upper mold base is disposed at the top of the upper mold base, and the two ends along the second direction are connected to the telescopic ends of the outer guide column. The stripper plate is disposed below the upper mold base, and the multiple bending knives are disposed around the stripper plate. The inner guide column extends along the first direction, and the two ends are respectively connected to the stripper plate and the upper mold base, and is used to press down the product through the stripper plate to fix it after the upper mold base is crimped with the lower mold base.

[0008] With the above technical solution, the stripper plate is movably connected to the upper die seat through the inner guide column. When the upper die set is separated from the lower die set, the stripper plate is farthest from the upper die seat due to its own weight, so it abuts against the bending knife to limit the position when it is not working. When the upper die set is crimped with the lower die set, the stripper plate is crimped and fixed with the product, and the upper die seat will continue to move downward for a certain distance. The two are closest to each other. At this time, multiple bending knives will continue to descend with the upper die seat. The other side of the bending knife loses the restriction of the stripper plate. After abutting against multiple lower stickers, it will rotate inward, thereby performing corner bending on the product.

[0009] In some embodiments, the upper mold assembly further includes a first bending assembly, a second bending assembly, a third bending assembly, and a fourth bending assembly. The first bending assembly and the second bending assembly are respectively arranged on both sides of the stripping plate along the third direction, and both extend along the second direction, and the first direction, the second direction, and the third direction are perpendicular to each other. The third bending assembly and the fourth bending assembly are respectively arranged on both sides of the stripping plate along the second direction, and both extend along the third direction. Each of the bending assemblies includes a rotating shaft for rotationally connecting with the bending knife.

[0010] With the above technical solution, the first bending assembly and the second bending assembly correspond to the length direction of the material placement platform, and the third bending assembly and the fourth bending assembly correspond to the width direction of the material placement platform. Each bending assembly includes a rotating shaft for rotationally connecting with the bending knife.

[0011] In some embodiments, each of the bending assemblies further includes an upper clamping plate, a side plate and a stop plate. The upper clamping plate is arranged close to the inner guide column, and the side plate is arranged away from the inner guide column, so as to form an installation space for the rotation axis to extend and be fixed when the upper clamping plate and the side plate are connected. The tops of the upper clamping plate and the side plate are both connected to the upper die seat. The stop plate extends along the third direction and is arranged at the bottom of the side plate. The bending knife is provided with a slot corresponding to the position of the stop plate, so as to be fixedly connected with the stop plate.

[0012] With the above technical solution, the rotating shaft is arranged between the upper clamping plate and the side plate. When the upper die set is separated from the lower die set, one side of the bending knife abuts against the stripping plate for limiting position, and the other side is clamped and fixed with the stop plate, thereby fixing the position of the bending knife for limiting protection. During the downward movement of the upper die set, the rotation direction of the bending knife is limited by clamping and fixing with the stop plate, thereby preventing the bending knife from deviating during the movement process and affecting the subsequent bending process.

[0013] In some embodiments, each of the bending assemblies further comprises a plurality of nitrogen springs. The plurality of nitrogen springs are located above the stripping plate and are spaced apart in the upper clamping plate. Each of the nitrogen springs extends along the second direction.

[0014] Using the above technical solution, the nitrogen spring is a new type of elastic component using high-pressure nitrogen as the working medium. It has a small size, large elastic force, long stroke, stable operation, precision manufacturing, long service life (one million times), a gentle elastic curve, and no need for pre-tightening, etc. It has the functions that conventional elastic components such as metal springs, rubber and air cushions are difficult to complete, simplifies mold design and manufacturing, facilitates mold installation and adjustment, extends the service life of the mold, and ensures the stability of product quality.

[0015] In some embodiments, the upper mold assembly further includes a plurality of upper pads. Step portions are provided around the top of the stripper plate and away from the plurality of nitrogen springs, and the plurality of upper pads are respectively provided on the step portions, so that each of the upper pads abuts against the upper clamping plate after the stripper plate is crimped with the product.

[0016] By adopting the above technical solution, when the upper die set and the lower die set are crimped, a plurality of upper pads are provided to replace the stripper plate to abut against the upper die seat, thereby achieving buffer contact.

[0017] In some embodiments, each lower sticking block is provided with a bending surface on one side facing the material loading platform. The bending surface includes a first vertical surface, a first inclined surface, and a second vertical surface. The first vertical surface, the first inclined surface, and the second vertical surface are sequentially arranged along the first direction. The first vertical surface is arranged away from the material loading platform, and the second vertical surface is arranged close to the material loading platform.

[0018] With the above technical solution, the bending knife first contacts the first vertical surface during the downward movement, and the first vertical surface is equivalent to an auxiliary guide for the movement of the bending knife. After that, the bending knife continues to contact the first inclined surface, thereby shifting the angle and rotating inward. After moving to the junction of the first inclined surface and the second vertical surface, the inward rotation angle of the bending knife is fixed, and the product is bent at this angle. Furthermore, by changing the position of the first inclined surface and the second vertical surface and the material placement platform, the degree of bending of the product corner by the bending knife can be changed.

[0019] In some embodiments, the lower mold assembly further includes a lower support plate, two lower pads and a lower mold base. The lower support plate and the lower mold base both extend along the second direction. The lower support plate is disposed at the bottom of the lower mold assembly. The two lower pads both extend along the second direction and are disposed at the top of the lower support plate along the third direction. The lower mold base is disposed at the top of the two lower pads. The material placement platform is disposed at the top of the lower mold base. Both ends of the lower mold base along the second direction are fixedly connected to the guide column seats of the outer guide columns.

[0020] In some embodiments, the material loading platform includes a lower template, a bending common mold and a driving cylinder. The lower template extends along the third direction, and is hollowed out at both ends and in the middle. The driving cylinder is disposed in the middle, and its piston rod is connected to the lower template, and is used to drive the lower template to move along the second direction. The bending common mold is disposed at both ends of the lower template along the third direction, and at one end along the second direction. The bending common mold is provided with a wedge-shaped portion protruding outward from the top of the bottom side of the lower template. The lower template is connected to the bending common molds at both ends of the lower template along the third direction by a spring, and is used to drive the bending movement of both ends through the lower template.

[0021] With the above technical solution, a slide rail extending along the second direction is provided below the lower die seat. When the upper die set is separated from the lower die set, the position of the lower die set is fixed, that is, the position of the material placement platform is fixed, and the product is placed; when the upper die set is crimped with the lower die set, the driving cylinder drives the lower die set to move along the slide rail, and the bending common die at both ends along the third direction is synchronously driven inward by the spring to strengthen the bending degree of the product corner by the bending knife. The wedge-shaped portion of the bending common die facilitates the bending knife to bend the product corner inward.

[0022] In some embodiments, the material placement platform further includes a limiting assembly. The limiting assembly is disposed at the other end of the lower template along the second direction, and includes a first limiting cylinder, a second limiting cylinder, a first blocking block, and a second blocking block. The first limiting cylinder is connected to the first blocking block, and the second limiting cylinder is connected to the second blocking block, and is used to respectively drive the first blocking block and the second blocking block to abut against the lower template for limiting.

[0023] By adopting the above technical solution, the first limiting cylinder is connected to the first blocking block, and the second limiting cylinder is connected to the second blocking block. When the upper mold group and the lower mold group are separated, the first blocking block and the second blocking block are respectively driven to abut against the lower mold for limiting. When the upper mold group and the lower mold group are crimped, the first blocking block and the second blocking block are respectively driven to separate from the lower mold without affecting the movement of the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a front view of an embodiment of an angle bending device of the utility model;

[0025] Figure 2 This is a partial structural diagram of an embodiment of an angle bending device of the utility model. Figure 1 ;

[0026] Figure 3 This is a partial structural diagram of an embodiment of an angle bending device of the utility model. Figure 2 ;

[0027] Figure 4 It is a three-dimensional diagram of a lower sticking block of an embodiment of an angle bending device of the utility model;

[0028] In the figure:

[0029] 10-upper die set; 11-upper die seat; 12-stripping plate; 13-inner guide pillar; 14-upper clamping plate; 15-side plate; 16-stop plate; 17-nitrogen spring; 18-upper pad; 19-rotating shaft;

[0030] 20-bending knife; 21-convex part; 22-bending assembly; 23-material placement platform;

[0031] 30-lower die set; 31-bending space; 32-lower support plate; 33-lower pad; 34-lower die base; 35-lower template; 36-bending common die; 37-wedge-shaped part; 38-driving cylinder; 39-limit key;

[0032] 40-lower sticking block; 41-bending surface; 42-first vertical surface; 43-first inclined surface; 44-second vertical surface;

[0033] 50-limiting assembly; 51-first limiting cylinder; 52-second limiting cylinder; 53-first blocking block; 54-second blocking block;

[0034] 60-outer guide column;

[0035] 7- Products. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0037] refer to Figure 1~Figure 3 , Figure 1 A front view of an angle bending device provided by an embodiment of the utility model is shown; Figure 2 The schematic diagram shows a partial structure of an angle bending device provided by an embodiment of the utility model. Figure 1 ; Figure 3The schematic diagram shows a partial structure of an angle bending device provided by the utility model. Figure 2 .

[0038] like Figure 1~Figure 3 As shown, the technical solution adopted by the utility model is a corner bending device, which has a symmetrical structure. Figure 2 and Figure 3 Only half of the structure is shown in FIG. 1 . The corner bending device includes an outer guide column 60, an upper die set 10 and a lower die set 30, wherein: the upper die set 10 and the lower die set 30 are arranged along a first direction ( Figure 2 The outer guide pillar 60 extends along the first direction to drive the upper die set 10 to move along the first direction and to press or separate with the lower die set 30. The lower die set 30 includes a material placement platform 23, a bending space 31 and a plurality of lower pasting blocks 40. The material placement platform 23 extends along the second direction ( Figure 2 The second direction is perpendicular to the first direction. The bending space 31 is arranged around the material placement platform 23, and a plurality of lower pasting blocks 40 are arranged around the bending space 31.

[0039] The bottom of the upper die set 10 is provided with a plurality of bending knives 20 corresponding to the bending space 31, each bending knife 20 extends along the first direction, and a convex portion 21 is provided at the bottom facing the material placement platform 23. The bending knife 20 can be bent along the circumferential direction ( Figure 2 The upper die set 10 and the lower die set 30 are crimped together, and the plurality of bending knives 20 are moved into the bending space 31, abutted against the lower pasting block 40, and rotated toward the direction close to the material placement platform 23, thereby crimping the corner of the product 7 to bend it.

[0040] The corner bending device provided by the utility model places the product 7 on the material placing platform 23. In the process that the upper die set 10 presses down toward the lower die set 30 through the outer guide column 60, the multiple bending knives 20 arranged at the bottom of the upper die set 10 gradually enter the bending space 31, and then abut against the multiple lower sticking blocks 40 around the bending space 31 to produce an inward angle deviation, that is, rotate in the direction where the product 7 is located, so that the convex parts 21 at the bottom of the multiple bending knives 20 simultaneously press the four sides of the product 7, and the corner bending process of the four sides of the product 7 is performed synchronously, and there is no need to switch the four sides to perform corner bending separately, which saves time and effort.

[0041] In some embodiments, reference Figure 1~Figure 3, the upper mold assembly 10 also includes an upper mold base 11, a stripper plate 12 and an inner guide column 13. The upper mold base 11 and the stripper plate 12 both extend along the second direction. The upper mold base 11 is arranged at the top of the upper mold assembly 10, and the two ends along the second direction are connected to the telescopic ends of the outer guide column 60. The stripper plate 12 is arranged below the upper mold base 11, and a plurality of bending knives 20 are arranged around the stripper plate 12. The inner guide column 13 extends along the first direction, and the two ends are respectively connected to the stripper plate 12 and the upper mold base 11, and is used to press the product 7 down through the stripper plate 12 to fix it after the upper mold assembly 10 is crimped with the lower mold assembly 30.

[0042] Exemplarily, the stripper plate 12 is movably connected to the upper die base 11 through the inner guide column 13. When the upper die set 10 is separated from the lower die set 30, the stripper plate 12 is farthest from the upper die base 11 due to its own weight, so it abuts against the bending knife 20 to limit the position of the upper die set 10 when not in operation. When the upper die set 10 and the lower die set 30 are crimped, the stripper plate 12 is crimped against the product 7 to fix it, and the upper die base 11 will continue to move downward for a certain distance, and the two are closest to each other. At this time, multiple bending knives 20 will continue to descend with the upper die base 11, and the other side of the bending knife 20 will lose the restriction of the stripper plate 12. After abutting against multiple lower stickers 40, it will rotate inward, thereby performing corner bending on the product 7.

[0043] In some embodiments, reference Figure 1~Figure 3 The upper mold assembly 10 also includes a first bending assembly, a second bending assembly, a third bending assembly and a fourth bending assembly. The first bending assembly and the second bending assembly are respectively arranged on the stripping plate 12 along the third direction ( Figure 2 The first direction, the second direction and the third direction are perpendicular to each other. The third bending assembly and the fourth bending assembly are respectively arranged on both sides of the stripping plate 12 along the second direction, and both extend along the third direction. Each bending assembly 22 includes a rotating shaft 19 for rotationally connecting with the bending knife 20.

[0044] Exemplarily, the first bending assembly and the second bending assembly correspond to the length direction of the material placement platform 23, and the third bending assembly and the fourth bending assembly correspond to the width direction of the material placement platform 23. Each bending assembly 22 includes a rotating shaft 19 for being rotatably connected to the bending knife 20.

[0045] In some embodiments, reference Figure 1~Figure 3Each bending assembly 22 also includes an upper clamping plate 14, a side plate 15 and a stop plate 16. The upper clamping plate 14 is arranged close to the inner guide column 13, and the side plate 15 is arranged away from the inner guide column 13, so as to form an installation space for the rotating shaft 19 to extend and be fixed when the upper clamping plate 14 and the side plate 15 are connected. The tops of the upper clamping plate 14 and the side plate 15 are both connected to the upper die base 11. The stop plate 16 extends along the third direction and is arranged at the bottom of the side plate 15. The bending knife 20 is provided with a card groove corresponding to the position of the stop plate 16, which is used to be clamped and fixed with the stop plate 16. The rotation direction of the bending knife 20 is limited.

[0046] Exemplarily, the rotating shaft 19 is disposed between the upper clamping plate 14 and the side plate 15. When the upper die set 10 is separated from the lower die set 30, one side of the bending knife 20 abuts against the stripping plate 12 for position limiting, and the other side is clamped and fixed with the stop plate 16, thereby fixing the position of the bending knife 20 for position limiting protection. During the downward movement of the upper die set 10, the rotation direction of the bending knife 20 is limited by clamping and fixing with the stop plate 16, thereby preventing the bending knife 20 from deviating during the movement process and affecting the subsequent bending process.

[0047] In some embodiments, reference Figure 1~Figure 3 Each bending assembly 22 further includes a plurality of nitrogen springs 17. The plurality of nitrogen springs 17 are located above the stripping plate 12 and are spaced apart in the upper clamping plate 14. Each nitrogen spring 17 extends along the second direction.

[0048] Exemplarily, the nitrogen spring 17 is a new type of elastic component with high-pressure nitrogen as the working medium. It is small in size, large in elasticity, long in stroke, stable in operation, precisely manufactured, long in service life (one million times), with a gentle elasticity curve, and does not require pre-tightening, etc. It has the functions that are difficult to accomplish with conventional elastic components such as metal springs, rubber and air cushions, simplifies mold design and manufacturing, facilitates mold installation and adjustment, extends the service life of the mold, and ensures the stability of the quality of the product 7. In this application, the nitrogen spring system is set up as part of the mold to work to achieve constant pressure and delayed action, strengthen the pressure of the upper mold group 10 on the lower mold group 30, and avoid the position displacement of the product 7 during the bending process due to extrusion.

[0049] In some embodiments, reference Figure 1~Figure 3 The upper die set 10 further includes a plurality of upper pads 18. Steps are provided around the top of the stripper plate 12 and away from the plurality of nitrogen springs 17. The plurality of upper pads 18 are respectively provided on the step portions, so that each upper pad 18 abuts against the upper clamping plate 14 when the stripper plate 12 is crimped with the product 7.

[0050] Exemplarily, when the upper die set 10 and the lower die set 30 are crimped, a plurality of upper pads 18 are provided to replace the stripper plate 12 and abut against the upper die seat 11 to achieve buffer contact.

[0051] refer to Figure 4 , Figure 4 A three-dimensional diagram of a lower sticking block 40 in an angle bending device provided by the utility model is shown.

[0052] In some embodiments, reference Figure 3 and Figure 4 Each lower sticking block 40 is provided with a bending surface 41 on one side facing the material placing platform 23. The bending surface 41 includes a first vertical surface 42, a first inclined surface 43 and a second vertical surface 44. The first vertical surface 42, the first inclined surface 43 and the second vertical surface 44 are arranged in sequence along the first direction. The first vertical surface 42 is arranged away from the material placing platform 23, and the second vertical surface 44 is arranged close to the material placing platform 23.

[0053] Exemplarily, the bending knife 20 first contacts the first vertical surface 42 during the downward movement, and the first vertical surface 42 is equivalent to an auxiliary guide for the movement of the bending knife 20. After that, the bending knife 20 continues to contact the first inclined surface 43, thereby shifting the angle and rotating inward. After moving to the junction of the first inclined surface 43 and the second vertical surface 44, the inward rotation angle of the bending knife 20 is fixed, and the product 7 is bent at this angle. Furthermore, by changing the position of the first inclined surface 43, the second vertical surface 44 and the material placement platform 23, the degree of bending of the product 7 by the bending knife 20 can be changed.

[0054] In some embodiments, reference Figure 1~Figure 3 The lower die assembly 30 further includes a lower support plate 32, two lower pads 33 and a lower die base 34. The lower support plate 32 and the lower die base 34 both extend along the second direction. The lower support plate 32 is disposed at the bottom of the lower die assembly 30. The two lower pads 33 both extend along the second direction and are disposed at the top of the lower support plate 32 along the third direction. The lower die base 34 is disposed at the top of the two lower pads 33. The material placement platform 23 is disposed at the top of the lower die base 34. Both ends of the lower die base 34 along the second direction are fixedly connected to the guide column base of the outer guide column 60.

[0055] In some embodiments, reference Figure 1~Figure 3 The material placement platform 23 includes a lower template 35, a bending common mold 36 and a driving cylinder 38. The lower template 35 extends along the third direction, and is hollowed out at both ends and in the middle. The driving cylinder 38 is arranged in the middle, and its piston rod is connected to the lower template 35, and is used to drive the lower template 35 to move in the second direction. The bending common mold 36 is arranged at both ends of the lower template 35 along the third direction, and at one end along the second direction. A wedge-shaped portion 37 is protruded outwardly from the top of the bending common mold 36 away from the bottom side of the lower template 35. The lower template 35 is connected to the bending common molds 36 at both ends of the lower template 35 along the third direction by a spring, and is used to drive the bending movement of both ends through the lower template 35.

[0056] Exemplarily, a slide rail extending along the second direction is provided below the lower die seat 34. When the upper die set 10 is separated from the lower die set 30, the position of the lower die plate 35 is fixed, that is, the position of the material placement platform 23 is fixed, and the product 7 is placed; when the upper die set 10 is crimped with the lower die set 30, the driving cylinder 38 drives the lower die plate 35 to move along the slide rail, and the bending common die 36 at both ends along the third direction is synchronously driven inward by the spring to strengthen the bending degree of the bending knife 20 on the corner of the product 7. The wedge-shaped portion 37 provided on the bending common die 36 facilitates the bending knife 20 to bend the corner of the product 7 inward.

[0057] A plurality of limit keys 39 are also provided at the bottom of the bending space 31, that is, below the wedge-shaped portion 37, and the plurality of limit keys 39 are provided around the material placement platform 23. The top of each limit key 39 includes a horizontal surface and an inclined surface sequentially arranged in a direction away from the material placement platform 23. The intersection of the inclined surface and the horizontal surface is the position corresponding to the wrap angle of the product 7, thereby determining the size of the product 7. The inclined surface can also abut against the bending knife 20 to limit its movement during operation.

[0058] In some embodiments, reference Figure 1~Figure 3 The material placing platform 23 further includes a limiting assembly 50. The limiting assembly 50 is disposed at the other end of the lower template 35 along the second direction, and includes a first limiting cylinder 51, a second limiting cylinder 52, a first blocking block 53, and a second blocking block 54. The first limiting cylinder 51 is connected to the first blocking block 53, and the second limiting cylinder 52 is connected to the second blocking block 54, and is used to respectively drive the first blocking block 53 and the second blocking block 54 to abut against the lower template 35 for limiting.

[0059] Exemplarily, the first limiting cylinder 51 is connected to the first blocking block 53, and the second limiting cylinder 52 is connected to the second blocking block 54. When the upper mold group 10 and the lower mold group 30 are separated, the first blocking block 53 and the second blocking block 54 are respectively driven to abut against the lower mold 35 for limiting. When the upper mold group 10 and the lower mold group 30 are crimped, the first blocking block 53 and the second blocking block 54 are respectively driven to separate from the lower mold without affecting the movement of the lower mold 35.

[0060] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An angle bending device, characterized in that: It includes an outer guide column, an upper die set and a lower die set, wherein: The upper die set and the lower die set are arranged opposite to each other along a first direction, and the outer guide pillar extends along the first direction to drive the upper die set to move along the first direction and to be crimped or separated from the lower die set; The lower die set includes a material placement platform, a bending space and a plurality of lower pasting blocks; the material placement platform extends along a second direction and is disposed on the top of the lower die set for placing products, the second direction being perpendicular to the first direction; the bending space is disposed around the material placement platform, and the plurality of lower pasting blocks are disposed around the bending space; A plurality of bending knives corresponding to the bending space are provided at the bottom of the upper mold group, each of the bending knives extends along the first direction, and a convex portion is provided at the bottom facing the side of the material loading platform; the bending knife can rotate along the circumferential direction, and the circumferential direction surrounds the second direction, and is used for when the upper mold group and the lower mold group are crimped, the plurality of bending knives move into the bending space, abut against the lower sticking block, and rotate toward the direction close to the material loading platform, thereby crimping with the corner of the product to bend it.

2. The corner bending device according to claim 1, characterized in that: The upper mold group also includes an upper mold base, a stripper plate and an inner guide column; the upper mold base and the stripper plate both extend along the second direction; the upper mold base is arranged at the top of the upper mold group, and the two ends along the second direction are connected to the telescopic ends of the outer guide column; the stripper plate is arranged below the upper mold base, and the multiple bending knives are arranged around the stripper plate; the inner guide column extends along the first direction, and the two ends are respectively connected to the stripper plate and the upper mold base, so as to press down the product through the stripper plate to fix it after the upper mold group is crimped with the lower mold group.

3. The corner bending device according to claim 2, characterized in that: The upper mold group also includes a first bending component, a second bending component, a third bending component and a fourth bending component; the first bending component and the second bending component are respectively arranged on both sides of the stripping plate along the third direction, and both extend along the second direction, and the first direction, the second direction and the third direction are perpendicular to each other; the third bending component and the fourth bending component are respectively arranged on both sides of the stripping plate along the second direction, and both extend along the third direction; each of the bending components includes a rotating shaft for rotationally connecting with the bending knife.

4. The corner bending device according to claim 3, characterized in that: Each of the bending assemblies further includes an upper clamping plate, a side plate and a stop plate; the upper clamping plate is arranged close to the inner guide column, and the side plate is arranged away from the inner guide column, so as to form an installation space for the rotation shaft to extend and be fixed when the upper clamping plate and the side plate are connected; the tops of the upper clamping plate and the side plates are both connected to the upper die base; the stop plate extends along the third direction and is arranged at the bottom of the side plate; the bending knife is provided with a card slot corresponding to the position of the stop plate, so as to be carded and fixed with the stop plate.

5. The corner bending device according to claim 4, characterized in that: Each of the bending assemblies further includes a plurality of nitrogen springs; the plurality of nitrogen springs are located above the stripping plate and are spaced apart in the upper clamping plate; each of the nitrogen springs extends along the second direction.

6. The corner bending device according to claim 5, characterized in that: The upper mold assembly also includes a plurality of upper pads; step portions are provided around the top of the stripper plate and away from the plurality of nitrogen springs, and the plurality of upper pads are respectively arranged on the step portions, so that each of the upper pads abuts against the upper clamping plate when the stripper plate is crimped with the product.

7. The corner bending device according to claim 1, characterized in that: Each lower sticking block is provided with a bending surface on the side facing the material loading platform; the bending surface includes a first vertical surface, a first inclined surface and a second vertical surface; the first vertical surface, the first inclined surface and the second vertical surface are arranged in sequence along the first direction; the first vertical surface is arranged away from the material loading platform, and the second vertical surface is arranged close to the material loading platform.

8. The corner bending device according to claim 3, characterized in that: The lower die assembly also includes a lower support plate, two lower pads and a lower die base; the lower support plate and the lower die base both extend along the second direction; the lower support plate is arranged at the bottom of the lower die assembly; the two lower pads both extend along the second direction and are arranged at the top of the lower support plate along the third direction; the lower die base is arranged at the top of the two lower pads; the material placement platform is arranged at the top of the lower die base; the two ends of the lower die base along the second direction are fixedly connected to the guide column seats of the outer guide columns.

9. The corner bending device according to claim 3, characterized in that: The material placement platform includes a lower template, a bending common mold and a driving cylinder; the lower template extends along the third direction, and is hollowed out at both ends and in the middle; the driving cylinder is arranged in the middle, and its piston rod is connected to the lower template, and is used to drive the lower template to move along the second direction; the bending common mold is arranged at both ends of the lower template along the third direction, and at one end along the second direction; the bending common mold is provided with a wedge-shaped portion protruding outward from the top of the bottom side of the lower template; the lower template is connected to the bending common molds at both ends of the lower template along the third direction by a spring, and is used to drive the bending movement of both ends through the lower template.

10. The corner bending device according to claim 9, characterized in that: The material placing platform also includes a limit assembly; the limit assembly is arranged at the other end of the lower template along the second direction, and includes a first limit cylinder, a second limit cylinder, a first blocking block and a second blocking block; the first limit cylinder is connected to the first blocking block, and the second limit cylinder is connected to the second blocking block, and is used to respectively drive the first blocking block and the second blocking block to abut against the lower template for limiting.

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