Sheet metal stamping die

Abstract

The invention provides a metal plate stamping die and belongs to the technical field of stamping dies, the metal plate stamping die comprises a bottom plate, a first driving assembly, a bending assembly, a movable supporting assembly, a second driving assembly and a conveying assembly, a vertical plate is fixedly arranged on the upper portion of the bottom plate, and one end of the movable supporting assembly is connected with the vertical plate; the movable supporting assembly is used for supporting a to-be-bent metal plate, the three bending assemblies are arranged on one side of the movable supporting assembly, and the conveying assembly is arranged above the movable supporting assembly and used for intermittently conveying the metal plate to the direction of the three bending assemblies. Compared with the prior art, the metal plate can be automatically bent into the square tube structure, after the metal plate is bent into the square tube structure, automatic discharging of the metal plate of the square tube structure can be achieved, and the beneficial effects of being good in bending effect and high in bending efficiency are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of stamping dies, and particularly relates to a stamping die for metal sheets. Background Art

[0002] Currently, the preparation of metal square tubes requires at least three stamping and bending processes for flat sheets. After three bendings, the flat sheets form a square tube structure.

[0003] In the prior art, when stamping and bending a flat sheet, a punch needs to move relative to a support structure, and the support structure provides support for the bending part of the sheet, so that after the punch acts on the sheet, the sheet can be bent on the side wall of the support structure. However, after the flat sheet is bent three times to form a square tube structure, the sheet of the square tube structure will be sleeved outside the support structure in a closed state. At this time, it is necessary to manually remove the sheet of the square tube structure from the outside of the support structure. On the one hand, manual material taking will affect the stamping and bending efficiency of the subsequent sheets. On the other hand, it will be difficult to take the material because the cooperation between the sheet of the square tube structure and the support structure is too tight. Summary of the Invention

[0004] Aiming at the deficiencies of the above prior art, the technical problem to be solved by the embodiments of the present invention is to provide a stamping die for metal sheets.

[0005] To solve the above technical problem, the present invention provides the following technical solutions:

[0006] A stamping die for metal sheets, comprising a bottom plate, a first driving assembly, a bending assembly, a movable support assembly, a second driving assembly, and a conveying assembly.

[0007] A vertical plate is fixedly arranged on the upper part of the bottom plate.

[0008] One end of the movable support assembly is connected to the vertical plate and is used to provide support for the metal sheet to be bent.

[0009] There are three groups of bending assemblies, and the three groups of bending assemblies are arranged on one side of the movable support assembly.

[0010] The conveying assembly is arranged above the movable support assembly and is used to intermittently convey the metal sheet towards the three groups of bending assemblies.

[0011] The first driving assembly is installed on the side wall of the vertical plate and is used to drive the three groups of bending assemblies to rotate, so as to perform three bendings on the metal sheet conveyed by the conveying assembly, so that the metal sheet forms a square tube structure outside the movable support assembly.

[0012] The second driving component is installed on the movable support component. After the metal sheet is bent into a square tube structure outside the movable support component, the second driving component is used to drive the deformation of the movable support component, so that the metal sheet of the square tube structure slides off from one end of the movable support component away from the vertical plate.

[0013] As a further improvement of the present invention: The first driving component includes a first rotating shaft and a first motor.

[0014] The first motor is fixedly installed on the side wall of the vertical plate, and the first rotating shaft is arranged at the output end of the first motor and is controlled by the first motor to rotate.

[0015] The three bending components have the same structure, and each includes a bending rod.

[0016] The bending rods corresponding to the three bending components are arranged outside the first rotating shaft and are distributed along the length direction of the first rotating shaft. One end of each group of bending rods is connected to the first rotating shaft through a group of elastic support components.

[0017] A guiding vertical plate is fixedly arranged on the side wall of the vertical plate through a connecting rod. The guiding vertical plate is arranged above the movable support component. There is a gap for the metal sheet to pass through between the bottom of the guiding vertical plate and the movable support component. The side of the guiding vertical plate facing the three bending rods is flush with the side of the movable support component facing the three bending rods.

[0018] As a further improvement of the present invention: The elastic support component includes a positioning sleeve, a telescopic rod and a first elastic member.

[0019] The positioning sleeve is fixedly installed on the side wall of the first rotating shaft and is perpendicular to the first rotating shaft. One end of the telescopic rod extends into the positioning sleeve and is in telescopic cooperation with the positioning sleeve, and the other end extends outside the positioning sleeve and is connected to the end of the bending rod. The first elastic member is arranged inside the positioning sleeve and is used to provide elastic support for the telescopic rod.

[0020] As a further improvement of the present invention: The end of the bending rod is rotatably connected to the telescopic rod.

[0021] As a further improvement of the present invention: The movable support component includes an L-shaped support block and a support bottom block.

[0022] The support bottom block is fixedly arranged on the side wall of the vertical plate, and the L-shaped support block is hinged on the upper part of the support bottom block.

[0023] As a further improvement of the present invention: The L-shaped support block is connected to the support bottom block through a second elastic member, and the second elastic member is used to provide elastic tension to the L-shaped support block.

[0024] The second driving assembly includes a wedge block, a third elastic member, and an L-shaped connecting rod.

[0025] The wedge block is movably arranged between the L-shaped support block and the support bottom block. One end of the L-shaped connecting rod is fixedly connected to the wedge block, and the other end passes through the support bottom block and extends to one side of the first rotating shaft. The L-shaped connecting rod is movably matched with the support bottom block. A ring seat is fixedly arranged on the outer part of the L-shaped connecting rod. One end of the third elastic member is connected to the support bottom block, and the other end is connected to the ring seat, and is used to provide elastic support to the ring seat. An arc-shaped protrusion is also fixedly arranged on the side wall of the first rotating shaft.

[0026] As a further improvement of the present invention: The first elastic member, the second elastic member, and the third elastic member are springs or metal shrapnel.

[0027] As a further improvement of the present invention: A driven roller is movably embedded in the upper part of the L-shaped support block.

[0028] The conveying assembly includes a second rotating shaft, a second motor, and a driving roller.

[0029] The second motor is fixedly installed on the side wall of the vertical plate. One end of the second rotating shaft is connected to the output end of the second motor, and the other end is connected to the driving roller. The driving roller is arranged above the driven roller.

[0030] As a further improvement of the present invention: A rolling support assembly is further arranged on the upper part of the bottom plate, and the rolling support assembly is used to provide rolling support for the metal sheet.

[0031] As a further improvement of the present invention: The rolling support assembly includes support rollers and support plates.

[0032] There are several groups of the support rollers, and several of the support rollers are linearly and spacedly distributed on the upper part of the bottom plate. Each group of the support rollers is rotatably provided with the support plate at the end, and the bottom of the support plate is fixedly connected to the upper part of the bottom plate.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] In an embodiment of the present invention, when a metal sheet needs to be stamped and bent into a square tube structure, the flat metal sheet can be placed on the upper part of the movable support assembly. Then, the conveying assembly is used to intermittently convey the flat metal sheet towards the three bending assemblies. At the same time, the three bending assemblies are driven to rotate by the first driving assembly. When the flat metal sheet is conveyed a quarter of the sheet length, a certain bending assembly acts on the upper part of the metal sheet, thereby driving one end of the metal sheet to bend downward by 90° relative to the movable support assembly. Subsequently, the conveying assembly continues to convey the metal sheet a quarter of the sheet length, and then the next bending assembly acts on the upper part of the metal sheet again, thereby driving the metal sheet to bend downward by 90° again relative to the movable support assembly. Subsequently, the conveying assembly conveys the metal sheet a quarter of the sheet length again, and then the next bending assembly acts on the upper part of the metal sheet again, thereby driving the metal sheet to bend downward by 90° again relative to the movable support assembly. At this point, the metal sheet undergoes three bending processes by the three bending assemblies, thereby forming a square tube structure on the outside of the movable support assembly. At this time, the second driving assembly drives the movable support assembly to deform, thereby enabling the metal sheet of the square tube structure to automatically slide off from the end of the movable support assembly far away from the vertical plate, thus realizing the automatic unloading of the metal sheet of the square tube structure. Compared with the prior art, it can automatically bend the metal sheet into a square tube structure, and after the metal sheet is bent into a square tube structure, the automatic unloading of the metal sheet of the square tube structure can be realized, having the advantages of good bending effect and high bending efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural diagram of a metal sheet stamping die Figure 1 ;

[0036] Figure 2 is a schematic structural diagram of a metal sheet stamping die Figure 2 ;

[0037] Figure 3 is a schematic structural diagram of a metal sheet stamping die Figure 3 ;

[0038] Figure 4 is a schematic structural diagram of the second driving assembly in a metal sheet stamping die Figure 1 ;

[0039] Figure 5 is a schematic structural diagram of the second driving assembly in a metal sheet stamping die Figure 2 ;

[0040] Figure 6 is Figure 1 the enlarged schematic diagram of area A in

[0041] Figure 7 is Figure 2Schematic enlarged view of area B

[0042] In the figure: 10 - bottom plate, 101 - vertical plate, 102 - connecting rod, 103 - guiding vertical plate, 20 - first driving assembly, 201 - first rotating shaft, 202 - first motor, 203 - arc-shaped protrusion, 30 - bending assembly, 301 - positioning sleeve, 302 - telescopic rod, 303 - bending rod, 304 - first elastic member, 40 - movable support assembly, 401 - L-shaped support block, 402 - second elastic member, 403 - support bottom block, 404 - driven roller, 50 - second driving assembly, 501 - wedge-shaped block, 502 - third elastic member, 503 - ring seat, 504 - L-shaped connecting rod, 60 - rolling support assembly, 601 - support roller, 602 - support plate, 70 - conveying assembly, 701 - second rotating shaft, 702 - second motor, 703 - driving roller. Detailed implementation manners

[0043] The technical solutions of the present invention will be further described in detail below in conjunction with the specific implementation manners.

[0044] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0046] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "set" should be understood in a broad sense. For example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Please refer to Figure 1 、 Figure 2 and Figure 3, this embodiment provides a metal sheet stamping die, including a bottom plate 10, a first driving component 20, a bending component 30, a movable support component 40, a second driving component 50, and a conveying component 70. A vertical plate 101 is fixedly arranged on the upper part of the bottom plate 10. One end of the movable support component 40 is connected to the vertical plate 101 and is used to provide support for the metal sheet to be bent. There are three groups of the bending components 30, and the three groups of the bending components 30 are arranged on one side of the movable support component 40. The conveying component 70 is arranged above the movable support component 40 and is used to intermittently convey the metal sheet towards the three groups of the bending components 30. The first driving component 20 is installed on the side wall of the vertical plate 101 and is used to drive the three groups of the bending components 30 to rotate, so as to perform three bends on the metal sheet conveyed by the conveying component 70, so that the metal sheet forms a square tube structure outside the movable support component 40. The second driving component 50 is installed on the movable support component 40. After the metal sheet is bent into a square tube structure outside the movable support component 40, the second driving component 50 is used to drive the movable support component 40 to deform, so that the metal sheet of the square tube structure slides off from the end of the movable support component 40 away from the vertical plate 101.

[0048] When it is necessary to stamp and bend a metal sheet into a square tube structure, the flat metal sheet can be placed on the upper part of the movable support component 40, and then the conveying component 70 is used to intermittently convey the flat metal sheet towards the three groups of the bending components 30. At the same time, the first driving component 20 drives the three groups of the bending components 30 to rotate. After the flat metal sheet is conveyed by a quarter of the sheet length, a certain group of the bending components 30 acts on the upper part of the metal sheet, and then drives one end of the metal sheet to bend downward by 90° compared with the movable support component 40. Subsequently, the conveying component 70 continues to convey the metal sheet by a quarter of the sheet length, and then the next group of the bending components 30 acts on the upper part of the metal sheet again, and then drives the metal sheet to bend downward by 90° compared with the movable support component 40 again. Subsequently, the conveying component 70 conveys the metal sheet by a quarter of the sheet length again, and then the next group of the bending components 30 acts on the upper part of the metal sheet again, and then drives the metal sheet to bend downward by 90° compared with the movable support component 40 again. At this point, the metal sheet is subjected to three bending treatments by the three groups of the bending components 30, so as to form a square tube structure outside the movable support component 40. At this time, the second driving component 50 drives the movable support component 40 to deform, and then the metal sheet of the square tube structure automatically slides off from the end of the movable support component 40 away from the vertical plate 10, so as to realize the automatic unloading of the metal sheet of the square tube structure.

[0049] Please refer to Figure 1 and Figure 3, in one embodiment, the first driving assembly 20 includes a first rotating shaft 201 and a first motor 202. The first motor 202 is fixedly installed on the side wall of the vertical plate 101. The first rotating shaft 201 is arranged at the output end of the first motor 202 and is controlled by the first motor 202 to rotate. The three bending assemblies 30 have the same structure and each includes a bending rod 303. The bending rods 303 corresponding to the three bending assemblies 30 are arranged outside the first rotating shaft 201 and are distributed along the length direction of the first rotating shaft 201. One end of each bending rod 303 is connected to the first rotating shaft 201 through a set of elastic support components. A guiding vertical plate 103 is fixedly arranged on the side wall of the vertical plate 101 through a connecting rod 102. The guiding vertical plate 103 is arranged above the movable support assembly 40. There is a gap for the metal sheet to pass through between the bottom of the guiding vertical plate 303 and the movable support assembly 40. The side of the guiding vertical plate 103 facing the three bending rods 303 is flush with the side of the movable support assembly 40 facing the three bending rods 303.

[0050] When it is necessary to stamp and bend a metal sheet into a square tube structure, the flat metal sheet can be placed on the upper part of the movable support assembly 40, and then the conveying assembly 70 is used to convey the flat metal sheet in the direction of the three bending rods 303 by a quarter of the sheet length, so that a quarter of the sheet length of the metal sheet passes through the gap between the guiding vertical plate 103 and the movable support assembly 40 and extends to the side of the movable support assembly 40. Then, the first motor 202 drives the first rotating shaft 201 to rotate, and further drives the three bending rods 303 to rotate through the three elastic support assemblies respectively. When the three bending rods 303 rotate, the first bending rod 303 acts on one side of the guiding vertical plate 103 in advance and slides downward along the side wall of the guiding vertical plate 103. When the first bending rod 303 moves to the lower end of the side wall of the guiding vertical plate 103, it acts on the upper part of the metal sheet, and further drives the part of the metal sheet extending to the side of the movable support assembly 40 to bend downward by 90° relative to the movable support assembly 40. As the three bending rods 303 continue to rotate, after the first bending rod 303 separates from the metal sheet, the second bending rod 303 rotates to be in contact with the side wall of the guiding vertical plate 103 and slides downward along the side wall of the guiding vertical plate 103. At this time, the conveying assembly 70 conveys the metal sheet by a quarter of the sheet length again, and then the second bending rod 303 acts on the upper part of the metal sheet again, and further drives the metal sheet to bend downward by 90° relative to the movable support assembly 40 again. Then, the second bending rod 303 separates from the metal sheet, the third bending rod 303 acts on the side wall of the guiding vertical plate 103 and slides downward along the side wall of the guiding vertical plate 103. At the same time, the conveying assembly 70 conveys the metal sheet by a quarter of the sheet length again, and then the third bending rod 303 acts on the upper part of the metal sheet again, and further drives the metal sheet to bend downward by 90° relative to the movable support assembly 40 again. At this point, the flat metal sheet can form a square tube structure outside the movable support assembly 40 after being bent by the three bending rods 303; when a certain bending rod 303 acts on the side wall of the guiding vertical plate 103 and slides downward along the side wall of the guiding vertical plate 103, the corresponding elastic support assembly is compressed by force, and then provides an elastic support force for the bending rod 303, so that the bending rod 303 can be in close contact with the side wall of the movable support assembly 40 for a long time after driving the metal sheet to bend by 90°, thereby preventing the metal sheet from rebounding and deforming after being bent, and further ensuring the bending quality of the metal sheet.

[0051] Please refer to Figure 1 and Figure 5, in one embodiment, the elastic support assembly includes a positioning sleeve 301, a telescopic rod 302, and a first elastic member 304. The positioning sleeve 301 is fixedly installed on the side wall of the first rotating shaft 201 and is perpendicular to the first rotating shaft 201. One end of the telescopic rod 302 extends into the positioning sleeve 301 and is in telescopic cooperation with the positioning sleeve 301, and the other end extends outside the positioning sleeve 301 and is connected to the end of the bent rod 303. The first elastic member 304 is arranged inside the positioning sleeve 301 and is used to provide elastic support for the telescopic rod 302.

[0052] When a certain group of bent rods 303 act on the side wall of the guiding vertical plate 103, as the first rotating shaft 201 continues to rotate, the bent rod 303 is stressed and drives the corresponding telescopic rod 302 to move into the corresponding positioning sleeve 301, causing the first elastic member 304 to be compressed. The bent rod 303 slides vertically along the side wall of the guiding vertical plate 103 and then acts on the upper part of the metal plate, causing the metal plate to bend downward by 90° relative to the movable support assembly 40. After the bent rod 303 drives the metal plate to bend by 90°, the bent rod 303 slides from the side wall of the guiding vertical plate 103 to the side wall of the movable support assembly 40 and continues to slide along the side wall of the movable support assembly 40. During this process, the bent rod 303 continuously presses on the metal plate to eliminate the resilience of the metal plate, thereby improving the bending effect of the metal plate. Until the bent rod 303 disengages from the lower part of the side wall of the movable support assembly 40, the first elastic member 304 pushes the telescopic rod 302 to make the telescopic rod 302 move outward from the positioning sleeve 301, and then drives the bent rod 303 away from the positioning sleeve 301 to realize the reset of the bent rod 303.

[0053] In one embodiment, the end of the bent rod 303 is rotatably connected to the telescopic rod 302, so that when the bent rod 303 presses the metal plate against the side wall of the movable support assembly 40 and slides downward, the bent rod 303 can rotate relative to the telescopic rod 302 and then roll relative to the metal plate, thereby reducing the friction force received by the metal plate to avoid scratching the surface of the metal plate.

[0054] Please refer to Figure 1 、 Figure 4 and Figure 5 , in one embodiment, the movable support assembly 40 includes an L-shaped support block 401 and a support bottom block 403. The support bottom block 403 is fixedly arranged on the side wall of the vertical plate 101, and the L-shaped support block 401 is hinged to the upper part of the support bottom block 403.

[0055] When a group of bending rods 303 slide down along the side wall of the guiding vertical plate 103 and act on the upper part of the metal plate, the metal plate bends downward by 90° compared to the L-shaped support block 401. After the three groups of bending rods 303 bend the metal plate three times, the formed square tube structure metal plate is sleeved outside the L-shaped support block 401 and the support bottom block 403. The L-shaped support block 401 acts on the inner top wall of the square tube structure metal plate to provide support for the square tube structure metal plate. At this time, the second driving assembly 50 drives the L-shaped support block 401 to rotate downward relative to the support bottom block 403 to an inclined state, so that the square tube structure metal plate automatically slides off from the end of the L-shaped support block 401 and the support bottom block 403 away from the vertical plate 101, realizing the automatic unloading of the square tube structure metal plate.

[0056] Please refer to Figure 4 , Figure 5 and Figure 7 , in one embodiment, the L-shaped support block 401 and the support bottom block 403 are connected by a second elastic member 402. The second elastic member 402 is used to provide an elastic pulling force for the L-shaped support block 401. The second driving assembly 50 includes a wedge block 501, a third elastic member 502 and an L-shaped connecting rod 504. The wedge block 501 is movably arranged between the L-shaped support block 401 and the support bottom block 403. One end of the L-shaped connecting rod 504 is fixedly connected to the wedge block 501, and the other end penetrates through the support bottom block 403 and extends to one side of the first rotating shaft 201. The L-shaped connecting rod 504 is movably matched with the support bottom block 403. A ring seat 503 is fixedly arranged outside the L-shaped connecting rod 504. One end of the third elastic member 502 is connected to the support bottom block 403, and the other end is connected to the ring seat 503, and is used to provide elastic support for the ring seat 503. An arc-shaped protrusion 203 is also fixedly arranged on the side wall of the first rotating shaft 201.

[0057] During the bending process of the three groups of bending rods 303 on the metal sheet, the end of the wedge block 501 with an inclined surface completely extends between the L-shaped support block 401 and the support bottom block 403. The upper part of the wedge block 501 acts on the bottom wall of the L-shaped support block 401 to provide support for the L-shaped support block 401, so that the L-shaped support block 401 remains horizontal, and then cooperates with the bending rod 303 to smoothly bend the metal sheet. After the three groups of bending rods 303 perform three bends on the metal sheet, the first rotating shaft 201 drives the arc-shaped protrusion 203 to rotate to one side of the L-shaped connecting rod 504. The arc-shaped protrusion 203 pushes the L-shaped connecting rod 504, causing the L-shaped connecting rod 504 to move relative to the support bottom block 403. When the L-shaped connecting rod 504 moves, it drives the wedge block 501 to move. When the wedge block 501 moves, the second elastic member 402 pulls the L-shaped support block 401, causing the L-shaped support block 401 to rotate downward relative to the support bottom block 403 to an inclined state. At this time, the metal sheet of the square tube structure sleeved outside the L-shaped support block 401 and the support bottom block 403 automatically slides down along the upper surface of the L-shaped support block 401 and finally slides off from the end of the L-shaped support block 401 and the support bottom block 403 away from the vertical plate 101, realizing the automatic unloading of the bent metal sheet. After the current metal sheet is unloaded, as the first rotating shaft 201 continues to rotate, the arc-shaped protrusion 203 separates from the L-shaped connecting rod 504. The third elastic member 502 pushes the sliding seat 503, thereby driving the L-shaped connecting rod 504 to slide in the opposite direction relative to the support bottom block 403, and then driving the wedge block 501 to move in the opposite direction. When the wedge block 501 moves in the opposite direction, the end with an inclined surface thereof re-enters between the L-shaped support block 401 and the support bottom block 403. At this time, the inclined surface at one end of the wedge block 501 acts on the L-shaped support block 401, thereby driving the L-shaped support block 401 to rotate upward relative to the support bottom block 403. When the L-shaped support block 401 rotates upward relative to the support bottom block 403 to a horizontal state, the wedge block 501 completely enters between the L-shaped support block 401 and the support bottom block 403 to re-provide rigid support for the L-shaped support block 401.

[0058] In one embodiment, the first elastic member 304, the second elastic member 402, and the third elastic member 502 can be springs or metal shrapnel, and there is no limitation here.

[0059] Please refer to Figure 3 and Figure 4 , in one embodiment, a driven roller 404 is movably embedded in the upper part of the L-shaped support block 401. The conveying assembly 70 includes a second rotating shaft 701, a second motor 702, and a driving roller 703. The second motor 702 is fixedly installed on the side wall of the vertical plate 101. One end of the second rotating shaft 701 is connected to the output end of the second motor 702, and the other end is connected to the driving roller 703. The driving roller 703 is arranged above the driven roller 404.

[0060] By placing a flat metal plate between the driving roller 703 and the driven roller 404, and then using the second motor 702 to drive the second rotating shaft 701 to rotate intermittently, the second rotating shaft 701 drives the driving roller 703 to rotate intermittently. Through the frictional force between the driving roller 703 and the metal sheet during rotation and in cooperation with the rolling support of the driven roller 404 for the metal sheet, the intermittent conveyance of the metal sheet in the direction of the three bending rods 303 can be achieved.

[0061] Please refer to Figure 1 , in one embodiment, a rolling support assembly 60 is further provided on the upper part of the bottom plate 10. The rolling support assembly 60 is used to provide rolling support for the metal sheet. When the driving roller 703 rotates to convey the metal sheet, the rolling support of the rolling support assembly 60 for the metal sheet can improve the convenience of conveying the metal sheet.

[0062] Please refer to Figure 1 , in one embodiment, the rolling support assembly 60 includes support rollers 601 and support plates 602. There are several groups of the support rollers 601, and the several support rollers 601 are linearly and spacedly distributed on the upper part of the bottom plate 10. The support plates 602 are rotatably provided at the ends of each group of the support rollers 601, and the bottoms of the support plates 602 are fixedly connected to the upper part of the bottom plate 10.

[0063] When the driving roller 703 rotates to convey the metal sheet, several support rollers 601 act on the bottom of the metal sheet and rotate adaptively, thereby improving the convenience of conveying the metal sheet.

[0064] In an embodiment of the present invention, when a metal sheet needs to be stamped and bent into a square tube structure, the flat metal sheet can be placed on the upper part of the movable support assembly 40. Then, the conveying assembly 70 intermittently conveys the flat metal sheet towards the three bending assemblies 30. At the same time, the three bending assemblies 30 are driven to rotate by the first driving assembly 20. When the flat metal sheet is conveyed by a quarter of the sheet length, a certain bending assembly 30 acts on the upper part of the metal sheet, thereby driving one end of the metal sheet to bend downward by 90° relative to the movable support assembly 40. Subsequently, the conveying assembly 70 continues to convey the metal sheet by a quarter of the sheet length, and then the next bending assembly 30 acts on the upper part of the metal sheet again, thereby driving the metal sheet to bend downward by 90° again relative to the movable support assembly 40. Subsequently, the conveying assembly 70 conveys the metal sheet by a quarter of the sheet length again, and then the next bending assembly 30 acts on the upper part of the metal sheet again, thereby driving the metal sheet to bend downward by 90° again relative to the movable support assembly 40. At this point, the metal sheet undergoes three bending processes by the three bending assemblies 30, thereby forming a square tube structure on the outside of the movable support assembly 40. At this time, the second driving assembly 50 drives the movable support assembly 40 to deform, so that the metal sheet of the square tube structure automatically slides off from the end of the movable support assembly 40 away from the vertical plate 10, thus realizing the automatic unloading of the metal sheet of the square tube structure. Compared with the prior art, it can automatically bend the metal sheet into a square tube structure, and after the metal sheet is bent into a square tube structure, the automatic unloading of the metal sheet of the square tube structure can be realized, having the advantages of good bending effect and high bending efficiency.

[0065] The above has described the preferred embodiments of the present invention in detail, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A metal sheet stamping die, characterized in that: It comprises a base plate (10), a first driving assembly (20), a bending assembly (30), a movable supporting assembly (40), a second driving assembly (50) and a conveying assembly (70), A vertical plate (101) is fixedly arranged on the upper part of the bottom plate (10). One end of the movable support assembly (40) is connected to the vertical plate (101) and is used to provide support for the metal sheet to be bent. The bending components (30) are provided in three groups, and the three groups of the bending components (30) are arranged on one side of the movable support component (40). The conveying assembly (70) is arranged above the movable support assembly (40) and is used to intermittently convey the metal sheet toward the three groups of bending assemblies (30). The first driving assembly (20) is mounted on a side wall of the vertical plate (101) and is used to drive the three sets of bending assemblies (30) to rotate, so as to perform three bends on the metal sheet conveyed by the conveying assembly (70), so that the metal sheet forms a square tube structure outside the movable supporting assembly (40). The second driving assembly (50) is mounted on the movable supporting assembly (40). When the metal sheet is bent into a square tube structure on the outside of the movable supporting assembly (40), the second driving assembly (50) is used to drive the movable supporting assembly (40) to deform, so that the metal sheet of the square tube structure slides away from one end of the movable supporting assembly (40) away from the vertical plate (101).

2. A metal sheet stamping die according to claim 1, characterized in that: The first driving assembly (20) comprises a first rotating shaft (201) and a first motor (202). The first motor (202) is fixedly mounted on the side wall of the vertical plate (101); the first rotating shaft (201) is arranged at the output end of the first motor (202) and is controlled to rotate by the first motor (202); The three groups of bending assemblies (30) have the same structure, and all include a bending rod (303). The bending rods (303) corresponding to the three groups of bending assemblies (30) are arranged outside the first rotating shaft (201) and distributed along the length direction of the first rotating shaft (201), and one end of each group of bending rods (303) is connected to the first rotating shaft (201) via a group of elastic support assemblies. A guide vertical plate (103) is fixedly provided on the side wall of the vertical plate (101) via a connecting rod (102); the guide vertical plate (103) is arranged above the movable support assembly (40); a gap is provided between the bottom of the guide vertical plate (303) and the movable support assembly (40) for a metal plate to pass through; a side of the guide vertical plate (103) facing the three groups of bending rods (303) is kept flush with a side of the movable support assembly (40) facing the three groups of bending rods (303).

3. A metal sheet stamping die according to claim 2, characterized in that: The elastic support assembly comprises a positioning sleeve (301), a telescopic rod (302) and a first elastic member (304). The positioning sleeve (301) is fixedly mounted on the side wall of the first rotating shaft (201) and is perpendicular to the first rotating shaft (201); one end of the telescopic rod (302) extends into the interior of the positioning sleeve (301) and is telescopically matched with the positioning sleeve (301); the other end extends to the exterior of the positioning sleeve (301) and is connected to the end of the bending rod (303); the first elastic member (304) is arranged inside the positioning sleeve (301) and is used to provide elastic support for the telescopic rod (302).

4. A metal sheet stamping die according to claim 3, characterized in that: The end of the bending rod (303) is rotatably connected to the telescopic rod (302).

5. The metal sheet stamping die according to claim 3, characterized in that: The movable support assembly (40) comprises an L-shaped support block (401) and a support bottom block (403). The supporting bottom block (403) is fixedly arranged on the side wall of the vertical plate (101), and the L-shaped supporting block (401) is hingedly arranged on the upper part of the supporting bottom block (403).

6. A metal sheet stamping die according to claim 5, characterized in that: The L-shaped support block (401) and the support bottom block (403) are connected via a second elastic member (402), and the second elastic member (402) is used to provide elastic pulling force to the L-shaped support block (401). The second driving assembly (50) comprises a wedge block (501), a third elastic member (502) and an L-shaped connecting rod (504). The wedge block (501) is movably arranged between the L-shaped support block (401) and the support bottom block (403); one end of the L-shaped connecting rod (504) is fixedly connected to the wedge block (501), and the other end passes through the support bottom block (403) and extends to one side of the first rotating shaft (201); the L-shaped connecting rod (504) is movably matched with the support bottom block (403); a ring seat (503) is fixedly arranged on the outside of the L-shaped connecting rod (504); one end of the third elastic member (502) is connected to the support bottom block (403), and the other end is connected to the ring seat (503) for providing elastic support to the ring seat (503); and an arc-shaped protrusion (203) is also fixedly arranged on the side wall of the first rotating shaft (201).

7. The metal sheet stamping die according to claim 6, characterized in that: The first elastic member (304), the second elastic member (402) and the third elastic member (502) are springs or metal springs.

8. The metal sheet stamping die according to claim 5, characterized in that: A driven roller (404) is movably embedded in the upper part of the L-shaped support block (401). The conveying assembly (70) comprises a second rotating shaft (701), a second motor (702) and a driving roller (703). The second motor (702) is fixedly mounted on the side wall of the vertical plate (101); one end of the second rotating shaft (701) is connected to the output end of the second motor (702); the other end is connected to the active roller (703); and the active roller (703) is arranged above the driven roller (404).

9. The metal sheet stamping die according to claim 1, characterized in that: A rolling support assembly (60) is also provided on the upper portion of the bottom plate (10), and the rolling support assembly (60) is used to provide rolling support for the metal plate.

10. The metal sheet stamping die according to claim 9, characterized in that: The rolling support assembly (60) comprises a support roller (601) and a support plate (602). The support rollers (601) are provided in a plurality of groups, and the plurality of support rollers (601) are linearly spaced and distributed on the upper portion of the bottom plate (10). The end of each group of support rollers (601) is rotatably provided with the support plate (602), and the bottom of the support plate (602) is fixedly connected to the upper portion of the bottom plate (10).

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