Sheet metal stamping die

Abstract

The invention provides a metal plate stamping die and belongs to the technical field of metal plate machining, the metal plate stamping die comprises a bottom plate, an inner supporting assembly, a first driving assembly, a stamping assembly, a second driving assembly and a conveying assembly, a first support plate is fixedly arranged on the upper portion of the bottom plate, and the inner supporting assembly is hinged to the inner side wall of the first support plate; the inner supporting assembly is installed on the upper portion of one side of the first support plate and used for supporting a metal plate to be punched, the punching assembly is arranged on the upper portion of one side of the inner supporting assembly, the first driving assembly is installed on the inner top wall of the first support plate and used for driving the punching assembly to move downwards, and the conveying assembly is arranged above the inner supporting assembly and used for conveying the metal plate to be punched. The conveying device is used for conveying metal plates twice. Compared with the prior art, when the square metal cylinder is prepared, a straight metal plate can be automatically punched into a square structure, the punched square metal cylinder can be automatically discharged, and the square metal cylinder punching device has the advantages of being good in punching effect and high in punching efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of metal plate processing, in particular to a metal plate stamping die. Background Art

[0002] At present, when preparing a metal square tube, it is necessary to perform multiple stamping and bending on the straight metal plate constituting the square tube so that the straight metal plate presents a square structure.

[0003] In the prior art, the stamping and bending of straight metal plates is mostly achieved by using a stamping machine, that is, by placing the straight metal plate to be stamped and bent below the punch of the stamping machine, and then using a hydraulic mechanism to drive the punch to move back and forth up and down. The straight metal plate is manually adjusted each time the punch moves up, so that the punch can act on different positions of the straight metal plate when it moves down subsequently. This stamping and bending method of metal plates is relatively traditional. On the one hand, manual adjustment of the metal plate is time-consuming and labor-intensive, resulting in relatively low stamping efficiency. On the other hand, the square tube after stamping and bending will be covered on the outside of the punch, and it is necessary to manually remove the square tube from the outside of the punch, which is not conducive to efficient stamping of metal plates. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a metal sheet stamping die.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A metal sheet stamping die comprises a bottom plate, an inner support assembly, a first drive assembly, a stamping assembly, a second drive assembly and a conveying assembly. A first bracket plate is fixedly arranged on the upper portion of the bottom plate. The inner support assembly is hingedly disposed on the inner side wall of the first bracket plate, and is used to provide support for the metal plate to be stamped. The punching assembly is arranged above one side of the inner support assembly, and the first driving assembly is installed on the top wall inside the first bracket plate to drive the punching assembly to move downward. The conveying assembly is arranged above the inner support assembly and is used to convey the metal plate twice. When the stamping assembly moves downward, the metal plate can be bent three times in cooperation with the conveying assembly for conveying the metal plate twice, so that the metal plate is stamped into a square cylindrical structure. The second driving assembly is arranged on one side of the stamping assembly. After the metal plate is stamped into a square cylindrical structure, the second driving assembly is used to drive the inner support assembly to rotate downward compared to the first bracket plate, so that the metal plate with a square cylindrical structure slides away from one end of the inner support assembly.

[0006] As a further improvement of the present invention: the stamping assembly includes a side support rod and a pressure rod, The side support rods are provided with two groups, and the two groups of side support rods are vertically opposite to each other. The pressure rods are provided with three groups, and the three groups of pressure rods are rotatably installed between the two groups of side support rods. The three groups of pressure rods are vertically spaced between the two groups of side support rods, and the three groups of pressure rods remain perpendicular to the two groups of side support rods.

[0007] As a further improvement of the present invention: the first driving assembly includes a hydraulic cylinder and a lifting rod, The hydraulic cylinder is fixedly mounted on the inner top wall of the first bracket plate, the lifting rod is mounted on the output end of the hydraulic cylinder, and the two groups of side support rods are fixedly arranged at the two ends of the bottom of the lifting rod.

[0008] As a further improvement of the present invention: the inner support assembly comprises an inner support block, a first elastic member and a support plate. One end of the support plate is hingedly connected to the inner side wall of the first bracket plate, and the other end is fixedly connected to the inner support block. One end of the first elastic member is connected to the bottom of the support plate, and the other end is connected to the inner wall of the first bracket plate, for providing elastic support for the support plate.

[0009] As a further improvement of the present invention: the second driving assembly includes a pressing block with an L-shaped structure, and the pressing block is fixedly mounted on the side wall of the side support rod.

[0010] As a further improvement of the present invention: a support rod is fixedly arranged on the side wall of the side support rod, and two sets of racks are fixedly arranged on one side of the support rod, and the two sets of racks are vertically spaced and distributed on one side of the support rod. The conveying assembly includes a rotating shaft, a gear and a conveying roller. One end of the rotating shaft is rotatably connected to the inner side wall of the first bracket plate, and the other end extends above the inner support block and is fixedly connected to the conveying roller. The rotating shaft and the conveying roller are distributed along the length direction of the inner support block. The gear is fixedly arranged outside the rotating shaft and can mesh with the two sets of racks. A first supporting roller is rotatably embedded on the upper surface of the inner supporting block, and the conveying roller and the first supporting roller are distributed in an upper and lower interval.

[0011] As a further improvement of the present invention: a U-shaped limiting rod is fixedly provided on the side wall of the first bracket plate.

[0012] As a further improvement of the present invention: a movable support assembly is further provided on the upper portion of the bottom plate, and the movable support assembly is used to provide movable support to the end of the inner support block away from the support plate.

[0013] As a further improvement of the present invention: an arc-shaped protrusion is fixedly provided on the side wall of the side support rod, and a slide rail is fixedly provided on the upper part of the bottom plate. The movable support assembly includes a third bracket plate, a slide seat, a second elastic member and a third support roller. The slide seat is arranged on the upper part of the base plate and slidably cooperates with the slide rail, the third bracket plate is fixedly arranged on the upper part of the slide seat, the third support roller is rotatably arranged on the upper end of the third bracket plate, the third support roller is in contact with the bottom wall of the inner support block, one end of the second elastic member is connected to the inner side wall of the first bracket plate, and the other end is connected to the slide seat, so as to provide elastic support for the slide seat.

[0014] As a further improvement of the present invention: a rolling support assembly is further provided on the upper part of the bottom plate located on one side of the inner support block, and the rolling support assembly is used to provide rolling support for the metal plate to be stamped. The rolling support assembly includes a plurality of second support rollers, which are spaced in sequence along the length direction of the base plate. A second bracket plate is rotatably provided at the end of each group of second support rollers, and the second bracket plate is fixedly mounted on the upper portion of the base plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the embodiment of the present invention, initially, the inner support assembly is kept horizontal on the inner side of the first bracket plate. When the metal plate needs to be stamped into a square cylindrical structure, the metal plate can be placed on the upper part of the inner support assembly and one end of the metal plate is extended to the outside of the inner support assembly. Then, the first driving assembly is used to drive the stamping assembly to move downward, and the stamping assembly acts on the extended metal plate, thereby driving one end of the metal plate to bend downward, thereby realizing a single bending of the metal plate. After the single bending, the metal plate presents an L-shaped structure. Then, the conveying assembly conveys the metal plate once, and then the downwardly moving stamping assembly drives the metal plate to bend downward again, thereby realizing a secondary bending of the metal plate. After the secondary bending, the metal plate presents a U-shaped structure. After the secondary bending of the metal plate, the conveying assembly conveys the metal plate for a secondary time. Then the stamping assembly that moves downward drives the metal plate to bend downward for the third time, thereby realizing three bendings of the metal plate. After the metal plate is bent three times, a square cylindrical structure is formed on the outside of the inner support assembly. Then the second driving assembly drives the inner support assembly to rotate downward compared to the inner side wall of the first bracket plate, thereby causing the originally horizontal inner support assembly to rotate to an inclined state. When the inner support assembly rotates to the inclined state, the metal plate with a square cylindrical structure on its outside can automatically slide away from one end of the inner support assembly, thereby realizing automatic discharge of the metal plate with a square cylindrical structure. Compared with the prior art, when preparing a square metal cylinder, a straight metal plate can be automatically stamped into a square structure, and the square metal cylinder after stamping can also be automatically unloaded, which has the advantages of good stamping effect and high stamping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a metal sheet stamping die Figure 1 ; Figure 2 A schematic diagram of the structure of a metal sheet stamping die Figure 2 ; Figure 3 A schematic diagram of the structure of a metal sheet stamping die Figure 3 ; Figure 4 It is a schematic diagram of the structure of an inner support block in a metal sheet stamping die; Figure 5 for Figure 1 A magnified schematic diagram of the middle A area; Figure 6 for Figure 1 A magnified schematic diagram of the middle B area; Figure 7 for Figure 2 Enlarged schematic diagram of the middle C area; In the figure: 10-bottom plate, 101-first bracket plate, 102-U-shaped limit rod, 103-slide rail, 20-inner support assembly, 201-inner support block, 202-first elastic member, 203-support plate, 204-first support roller, 30-first drive assembly, 301-hydraulic cylinder, 302-lifting rod, 40-stamping assembly, 401-side support rod, 402-arc-shaped protrusion, 403-pressure rod, 404-support rod, 405-rack, 50-second drive assembly, 60-conveyor assembly, 601-rotating shaft, 602-gear, 603-conveyor roller, 70-rolling support assembly, 701-second support roller, 702-second bracket plate, 80-movable support assembly, 801-third bracket plate, 802-slide seat, 803-second elastic member, 804-third support roller. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] See also Figure 1 , Figure 2 as well as Figure 3The present embodiment provides a metal sheet stamping die, comprising a bottom plate 10, an inner support assembly 20, a first drive assembly 30, a stamping assembly 40, a second drive assembly 50 and a conveying assembly 60. A first bracket plate 101 is fixedly arranged on the upper part of the bottom plate 10. The inner support assembly 40 is hingedly arranged on the inner side wall of the first bracket plate 101 to provide support for the metal sheet to be stamped. The stamping assembly 40 is arranged above one side of the inner support assembly 40. The first drive assembly 30 is installed on the inner top wall of the first bracket plate 101 to drive the stamping assembly 40 to move downward. The conveying assembly 60 is arranged above the inner support assembly 20, and is used to convey the metal plate twice. When the stamping assembly 40 moves downward, the metal plate can be bent three times in cooperation with the conveying assembly 60 for conveying the metal plate twice, so that the metal plate is punched into a square cylindrical structure. The second driving assembly 50 is arranged on one side of the stamping assembly 40. After the metal plate is punched into a square cylindrical structure, the second driving assembly 50 is used to drive the inner support assembly 20 to rotate downward compared to the first bracket plate 101, so that the metal plate with a square cylindrical structure slides away from one end of the inner support assembly 20.

[0020] Initially, the inner support assembly 20 is kept horizontal on the inner side of the first bracket plate 101. When the metal plate needs to be stamped into a square cylindrical structure, the metal plate can be placed on the upper part of the inner support assembly 20 and one end of the metal plate is extended to the outside of the inner support assembly 20. Then, the first driving assembly 30 is used to drive the stamping assembly 40 to move downward. The stamping assembly 40 acts on the extended metal plate, thereby driving one end of the metal plate to bend downward, thereby realizing a first bending of the metal plate. After the first bending, the metal plate has an L-shaped structure. Then, the conveying assembly 60 conveys the metal plate once, and then the downward-moving stamping assembly 40 drives the metal plate to bend downward again, thereby realizing a second bending of the metal plate. The metal plate has a U-shaped structure. After the metal plate is bent twice, the conveying component 60 conveys the metal plate for the second time, and then the downward-moving stamping component 40 drives the metal plate to bend downward for the third time, thereby realizing the three-fold bending of the metal plate. After the metal plate is bent three times, a square cylindrical structure is formed on the outside of the inner support component 20, and then the second driving component 50 drives the inner support component 20 to rotate downward compared to the inner side wall of the first bracket plate 101, thereby making the originally horizontal inner support component 20 rotate to an inclined state. When the inner support component 20 rotates to an inclined state, the metal plate with a square cylindrical structure on its outside can automatically slide away from one end of the inner support component 20, thereby realizing automatic discharge of the metal plate with a square cylindrical structure.

[0021] See also Figure 1In one embodiment, the stamping assembly 40 includes side support rods 401 and pressure rods 403. The side support rods 401 are provided with two groups, and the two groups of side support rods 401 are vertically relatively distributed. The pressure rods 403 are provided with three groups, and the three groups of pressure rods 403 are installed between the two groups of side support rods 401. The three groups of pressure rods 403 are vertically spaced between the two groups of side support rods 401, and the three groups of pressure rods 403 remain perpendicular to the two groups of side support rods 401.

[0022] After the metal plate to be punched is placed on the upper part of the inner support assembly 20 and one end of the metal plate extends outward from the inner support assembly 20, the first driving assembly 30 drives the two sets of side support rods 401 to move downward. When the two sets of side support rods 401 move downward, they drive the three sets of pressure rods 403 to move downward synchronously. The bottom set of pressure rods 403 acts on the metal plate in advance and drives one end of the metal plate to bend downward relative to the inner support assembly 20, thereby forming an L-shaped structure. Subsequently, the conveying assembly 60 conveys the metal plate on the upper part of the inner support assembly 20 once. When the metal plate is conveyed once, it has a Part of it continues to extend to the outside of the inner support component 20, and then a group of pressure rods 403 located in the middle continue to act on the metal plate, thereby driving the metal plate to bend downward again compared to the inner support component 20, thereby forming a U-shaped structure, and then the conveying component 60 conveys the metal plate on the upper part of the inner support component 20 for the second time. When the metal plate is conveyed for the second time, a part of it extends to the outside of the inner support component 20 again, and then a group of pressure rods 403 located at the top acts on the metal plate, thereby driving the metal plate to bend downward for the third time compared to the inner support component 20, thereby forming a square cylindrical structure.

[0023] In one embodiment, the three groups of pressure rods 403 are rotatably matched with the two groups of side support rods 401, so that when the three groups of pressure rods 403 act on the metal plate to stamp and bend the metal plate, the three groups of pressure rods 403 can rotate compared to the two groups of side support rods 401, and then roll compared to the surface of the bent metal plate, thereby reducing the friction between the metal plate and avoiding scratches on the surface of the metal plate.

[0024] See also Figure 1 , Figure 2 as well as Figure 3 In one embodiment, the first driving assembly 30 includes a hydraulic cylinder 301 and a lifting rod 302, the hydraulic cylinder 301 is fixedly mounted on the inner top wall of the first support plate 101, the lifting rod 302 is mounted on the output end of the hydraulic cylinder 301, and the two sets of side support rods 401 are fixedly arranged at both ends of the bottom of the lifting rod 302.

[0025] After the metal plate to be punched is placed on the upper part of the inner support assembly 20 and one end of the metal plate extends to the outside of the inner support assembly 20, the hydraulic cylinder 301 extends and drives the lifting rod 302 to move downward. When the lifting rod 302 moves downward, it drives the two groups of side support rods 401 and the three groups of pressure rods 403 to move downward. When the three groups of pressure rods 403 move downward, they cooperate with the conveying assembly 60 to convey the metal plate twice to bend the metal plate three times.

[0026] See also Figure 1 , Figure 3 as well as Figure 4 In one embodiment, the inner support assembly 20 includes an inner support block 201, a first elastic member 202 and a support plate 203, one end of the support plate 203 is hingedly connected to the inner side wall of the first bracket plate 101, and the other end is fixedly connected to the inner support block 201, one end of the first elastic member 202 is connected to the bottom of the support plate 203, and the other end is connected to the inner wall of the first bracket plate 101, for providing elastic support to the support plate 203.

[0027] The metal plate to be punched is placed on the upper part of the inner support block 201 so that one end of the metal plate extends to the outside of the inner support block 201, and then the hydraulic cylinder 301 extends to drive the lifting rod 302, the two groups of side support rods 401 and the three groups of pressure rods 403 to move downward, and the lowest group of pressure rods 403 act on the metal plate in advance to exert downward pressure on the metal plate, and the metal plate is bent downward compared with the inner support block 201 under the action of this pressure, and the bent metal plate presents an L-shaped structure, and then the conveying component 60 conveys the metal plate on the upper part of the inner support block 201 once, so that a part of the metal plate passes between the lowest pressure rod 403 and the middle pressure rod 403 and extends to the outside of the inner support block 201 again, and then the pressure rod 403 in the middle moves downward and acts on the metal plate again to exert downward pressure on the metal plate again, and the metal plate is bent downward again compared with the inner support block 201 under the action of this pressure, and the bent metal plate presents a U-shaped structure, and then the conveying component 60 The metal plate on the top of block 201 is conveyed for the second time, so that a part of the metal plate passes through between the middle pressure rod 403 and the uppermost pressure rod 403 and extends to the outside of the inner support block 201 again. Then, the pressure rod 403 at the top moves down and acts on the metal plate for the third time, thereby applying downward pressure to the metal plate again. Under the action of this pressure, the metal plate is bent downward for the third time compared with the inner support block 201, and the bent metal plate presents a square cylindrical structure; when the metal plate is punched into a square cylindrical structure, the metal plate with the square cylindrical structure is sleeved on the outside of the inner support block 201. At this time, as the side support rod 401 continues to move downward, the second drive assembly 50 drives the support plate 203 to rotate downward compared with the inner side wall of the first bracket plate 101, thereby driving the inner support block 201 to rotate downward to an inclined state. At this time, the metal plate with the square cylindrical structure sleeved on the outside of the inner support block 201 automatically slides away from one end of the inner support block 201 by its own gravity, thereby realizing automatic discharge of the square cylindrical structure metal plate.

[0028] See also Figure 1 In one embodiment, the second driving assembly 50 includes a pressing block in an L-shaped structure, and the pressing block is fixedly mounted on the side wall of the side support rod 401.

[0029] After the metal plate is punched into a square cylindrical structure, as the side support rod 401 continues to move downward, the L-shaped pressure block on the side wall of the side support rod 401 acts on the support plate 203, thereby applying downward pressure to the support plate 203, so that the support plate 203 overcomes the elastic supporting force of the first elastic member 202 and then rotates downward compared to the inner side wall of the first bracket plate 101. The support plate 203 drives the inner support block 201 to rotate downward. When the inner support block 201 rotates to an inclined state, the metal plate with a square cylindrical structure sleeved on the outside of the inner support block 201 slides off from one end of the inner support block 201 by itself.

[0030] See also Figure 2 as well as Figure 5In one embodiment, a support rod 404 is fixedly provided on the side wall of the side support rod 401, and two groups of racks 405 are fixedly provided on one side of the support rod 404. The two groups of racks 405 are vertically spaced apart on one side of the support rod 404. The conveying assembly 60 includes a rotating shaft 601, a gear 602 and a conveying roller 603. One end of the rotating shaft 601 is rotatably connected to the inner side wall of the first bracket plate 101, and the other end extends to the top of the inner support block 201 and is fixedly connected to the conveying roller 603. The rotating shaft 601 and the conveying roller 603 are distributed along the length direction of the inner support block 201. The gear 602 is fixedly provided on the outside of the rotating shaft 601 and can engage with the two groups of racks 405.

[0031] After the metal plate to be punched is placed on the upper part of the inner support block 201, the conveying roller 603 is attached to the upper surface of the metal plate. As the hydraulic cylinder 301 drives the lifting rod 302, the two sets of side support rods 401 and the three sets of pressure rods 403 to move downward, the side support rods 401 can drive the support rods 404 to move downward synchronously, and then drive the two sets of racks 405 to move downward synchronously. When the lowest pressure rod 403 completes one bending of the metal plate, a set of racks 405 located at the bottom of the side wall of the support rod 404 moves to the side of the gear 602 and meshes with the gear 602, thereby driving the gear 602, the rotating shaft 601 and the conveying roller 603 to rotate. When the conveying roller 603 rotates, it brings The movable metal plate moves along the upper part of the inner support block 201 to realize the primary conveyance of the metal plate. After the primary conveyance of the metal plate is completed, a group of racks 405 located at the bottom disengage from the gear 602, and then a group of pressure rods 403 located in the middle perform a secondary bend on the metal plate. After the group of pressure rods 403 located in the middle perform a secondary bend on the metal plate, a group of racks 405 located at the top moves to one side of the gear 602 and engages with the gear 602, thereby driving the gear 602, the rotating shaft 601 and the conveying roller 603 to rotate again. When the conveying roller 603 rotates again, it drives the metal plate to move along the upper part of the inner support block 201 again through the friction with the metal plate, thereby realizing the secondary conveyance of the metal plate.

[0032] See also Figure 4 as well as Figure 6 In one embodiment, a first supporting roller 204 is rotatably embedded in the upper surface of the inner supporting block 201 , and the conveying roller 603 and the first supporting roller 204 are spaced apart from each other in an upper and lower manner.

[0033] By setting the first support roller 204, rolling support can be provided for the metal plate placed on the upper part of the inner support block 201. When the rack 405 is meshed with the gear 602 and drives the conveying roller 603 to rotate, the conveying roller 603 and the first support roller 204 clamp the metal plate and convey the metal plate together, thereby improving the conveying effect of the metal plate.

[0034] See also Figure 1 In one embodiment, a U-shaped limiting rod 102 is fixedly disposed on the side wall of the first bracket plate 101 .

[0035] After the metal plate to be stamped is placed on the upper part of the inner support block 201, the end of the metal plate extending to the outside of the inner support block 201 can be made to contact the inner wall of the U-shaped limit rod 102, and the placement position of the metal plate is limited by the U-shaped limit rod 102, thereby ensuring that the size of the metal plate after stamping meets the requirements.

[0036] See also Figure 1 In one embodiment, a movable support assembly 80 is further provided on the upper portion of the base plate 10, and the movable support assembly 80 is used to provide movable support for the end of the inner support block 201 away from the support plate 203, so that when the pressure rod 403 stamps the metal plate downward, the inner support block 201 can remain stable to prevent the inner support block 201 from being subjected to the downward pressure from the pressure rod 403 and thereby driving the support plate 203 to rotate downward compared to the inner side wall of the first bracket plate 101, so that the metal plate can be smoothly stamped and bent.

[0037] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 7 In one embodiment, an arc-shaped protrusion 402 is fixedly provided on the side wall of the side support rod 401, a slide rail 103 is fixedly provided on the upper part of the base plate 10, and the movable support assembly 80 includes a third bracket plate 801, a slide seat 802, a second elastic member 803 and a third support roller 804. The slide seat 802 is arranged on the upper part of the base plate 10 and slidably cooperates with the slide rail 103. The third bracket plate 801 is fixedly provided on the upper part of the slide seat 802, and the third support roller 804 is rotatably provided on the upper end of the third bracket plate 801. The third support roller 804 is in contact with the bottom wall of the inner support block 201. One end of the second elastic member 803 is connected to the inner side wall of the first bracket plate 101, and the other end is connected to the slide seat 802, so as to provide elastic support to the slide seat 802.

[0038] When the three groups of pressure rods 403 are stamping and bending the metal plate, the third support roller 804 is attached to the bottom of the inner support block 201, thereby providing support for the end of the inner support block 201 away from the support plate 203, so that the inner support block 201 remains stable. After the top group of pressure rods 403 stamps the metal plate into a square cylindrical structure, as the side support rods 401 continue to move downward, the arc-shaped protrusions 402 on the side walls of the side support rods 401 act on the third bracket plate 801, thereby pushing the third bracket plate 801 to make the slide seat The third support roller 802 slides along the slide rail 103, thereby driving the third support roller 804 to roll along the bottom wall of the inner support block 201 and be removed from the bottom of the inner support block 201, thereby releasing the support state of the inner support block 201, and then the pressing block acts on the support plate 203, thereby pressing the support plate 203 downward, so that the support plate 203 rotates downward compared to the inner side wall of the first bracket plate 101, thereby driving the inner support block 201 to rotate downward to an inclined state, thereby causing the square cylindrical structure sleeved on the outside of the inner support block 201 to rotate downward to an inclined state. The metal plate slides away from one end of the inner support block 201 by itself, realizing the automatic discharge of the square cylindrical structure metal plate; after the metal plate of the square cylindrical structure is discharged from the outside of the inner support block 201, the hydraulic cylinder 301 drives the lifting rod 302 to move upward, thereby driving the two sets of side support rods 401, the three sets of pressure rods 403, the arc-shaped protrusion 402 and the pressure block to move upward synchronously. When the pressure block moves upward, the first elastic member 202 pushes the support plate 203 so that the support plate 203 rotates upward compared to the inner side wall of the first bracket plate 101, thereby The inner support block 201 is driven to rotate upward, and when the inner support block 201 rotates to a horizontal state again, it stops rotating to achieve the reset of the inner support block 201. Then the arc-shaped protrusion 402 is removed from one side of the third bracket plate 801, and the second elastic member 803 pushes the slide 802 to slide in the opposite direction along the slide rail 103, thereby driving the third bracket plate 801 and the third support roller 804 to move in the opposite direction, and the third support roller 804 moves back to the bottom of the inner support block 201 to re-support the inner support block 201.

[0039] In one embodiment, the first elastic member 202 and the second elastic member 803 may be springs or metal springs, which are not limited here.

[0040] See also Figure 1 In one embodiment, a rolling support assembly 70 is further provided on the upper portion of the base plate 10 located on one side of the inner support block 201, and the rolling support assembly 70 is used to provide rolling support for the metal plate to be stamped.

[0041] See also Figure 1 as well as Figure 2In one embodiment, the rolling support assembly 70 includes a plurality of second support rollers 701, and the plurality of second support rollers 701 are spaced apart in sequence along the length direction of the base plate 10. The ends of each group of second support rollers 701 are rotatably provided with a second bracket plate 702, and the second bracket plate 702 is fixedly installed on the upper part of the base plate 10.

[0042] When the metal plate to be stamped is placed on the upper part of the inner support block 201, one end of the inner support block 201 contacts the inner wall of the U-shaped limit rod 102, and the other end overlaps the upper part of several second support rollers 701. Several second support rollers 701 are used to provide rolling support for the metal plate, so that when the conveying roller 603 rotates to convey the metal plate, the several second support rollers 701 are adaptively rotated due to the friction when the metal plate moves, so as to ensure that the metal plate can be conveyed smoothly and steadily.

[0043] In the embodiment of the present invention, initially, the inner support component 20 is kept horizontal on the inner side of the first bracket plate 101. When the metal plate needs to be stamped into a square cylindrical structure, the metal plate can be placed on the upper part of the inner support component 20 and one end of the metal plate is extended to the outside of the inner support component 20. Then, the first driving component 30 is used to drive the stamping component 40 to move downward. The stamping component 40 acts on the extended metal plate, thereby driving one end of the metal plate to bend downward, thereby realizing a single bending of the metal plate. After the single bending, the metal plate presents an L-shaped structure. Then, the conveying component 60 conveys the metal plate once, and then the downwardly moved stamping component 40 drives the metal plate to bend downward again, thereby realizing a secondary bending of the metal plate. After the secondary bending, the metal plate presents a U-shaped structure. After the secondary bending of the metal plate, the conveying component 60 conveys the metal plate for a second time. The stamping assembly 40 then moves downward to drive the metal plate to bend downward for the third time, thereby realizing three bendings of the metal plate. After the metal plate is bent three times, a square cylindrical structure is formed on the outside of the inner support assembly 20. Then the second driving assembly 50 drives the inner support assembly 20 to rotate downward compared to the inner side wall of the first bracket plate 101, thereby causing the originally horizontal inner support assembly 20 to rotate to an inclined state. When the inner support assembly 20 rotates to an inclined state, the metal plate of the square cylindrical structure on its outside can automatically slide away from one end of the inner support assembly 20, thereby realizing automatic discharge of the metal plate of the square cylindrical structure. Compared with the prior art, when preparing a square metal cylinder, a straight metal plate can be automatically stamped into a square structure, and the square metal cylinder after stamping can also be automatically unloaded, which has the advantages of good stamping effect and high stamping efficiency.

[0044] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A metal sheet stamping die, characterized in that: It includes a bottom plate, an inner support assembly, a first drive assembly, a punching assembly, a second drive assembly and a conveying assembly. A first bracket plate is fixedly arranged on the upper portion of the bottom plate. The inner support assembly is hingedly disposed on the inner side wall of the first bracket plate, and is used to provide support for the metal plate to be stamped. The punching assembly is arranged above one side of the inner support assembly, and the first driving assembly is installed on the top wall inside the first bracket plate to drive the punching assembly to move downward. The conveying assembly is arranged above the inner support assembly and is used to convey the metal plate twice. When the stamping assembly moves downward, the metal plate can be bent three times in cooperation with the conveying assembly for conveying the metal plate twice, so that the metal plate is stamped into a square cylindrical structure. The second driving assembly is arranged on one side of the stamping assembly. After the metal plate is stamped into a square cylindrical structure, the second driving assembly is used to drive the inner support assembly to rotate downward compared to the first bracket plate, so that the metal plate with a square cylindrical structure slides away from one end of the inner support assembly.

2. A metal sheet stamping die according to claim 1, characterized in that: The stamping assembly includes a side support rod and a pressure rod, The side support rods are provided with two groups, and the two groups of side support rods are vertically opposite to each other. The pressure rods are provided with three groups, and the three groups of pressure rods are rotatably installed between the two groups of side support rods. The three groups of pressure rods are vertically spaced between the two groups of side support rods, and the three groups of pressure rods remain perpendicular to the two groups of side support rods.

3. A metal sheet stamping die according to claim 2, characterized in that: The first driving assembly includes a hydraulic cylinder and a lifting rod. The hydraulic cylinder is fixedly mounted on the inner top wall of the first bracket plate, the lifting rod is mounted on the output end of the hydraulic cylinder, and the two groups of side support rods are fixedly arranged at the two ends of the bottom of the lifting rod.

4. A metal sheet stamping die according to claim 2, characterized in that: The inner support assembly includes an inner support block, a first elastic member and a support plate. One end of the support plate is hingedly connected to the inner side wall of the first bracket plate, and the other end is fixedly connected to the inner support block. One end of the first elastic member is connected to the bottom of the support plate, and the other end is connected to the inner wall of the first bracket plate, for providing elastic support for the support plate.

5. A metal sheet stamping die according to claim 4, characterized in that: The second driving assembly includes a pressing block in an L-shaped structure, and the pressing block is fixedly mounted on the side wall of the side support rod.

6. The metal sheet stamping die according to claim 4, characterized in that: A support rod is also fixedly arranged on the side wall of the side support rod, and two sets of racks are fixedly arranged on one side of the support rod, and the two sets of racks are vertically spaced and distributed on one side of the support rod. The conveying assembly includes a rotating shaft, a gear and a conveying roller. One end of the rotating shaft is rotatably connected to the inner side wall of the first bracket plate, and the other end extends above the inner support block and is fixedly connected to the conveying roller. The rotating shaft and the conveying roller are distributed along the length direction of the inner support block. The gear is fixedly arranged outside the rotating shaft and can mesh with the two sets of racks. A first supporting roller is rotatably embedded on the upper surface of the inner supporting block, and the conveying roller and the first supporting roller are distributed in an upper and lower interval.

7. The metal sheet stamping die according to claim 1, characterized in that: A U-shaped limiting rod is also fixedly arranged on the side wall of the first bracket plate.

8. The metal sheet stamping die according to claim 4, characterized in that: A movable support assembly is also provided on the upper portion of the bottom plate, and the movable support assembly is used to provide movable support to an end of the inner support block away from the support plate.

9. The metal sheet stamping die according to claim 8, characterized in that: The side wall of the side support rod is also fixedly provided with an arc-shaped protrusion, and the upper part of the bottom plate is fixedly provided with a slide rail. The movable support assembly includes a third bracket plate, a slide seat, a second elastic member and a third support roller. The slide seat is arranged on the upper part of the base plate and slidably cooperates with the slide rail, the third bracket plate is fixedly arranged on the upper part of the slide seat, the third support roller is rotatably arranged on the upper end of the third bracket plate, the third support roller is in contact with the bottom wall of the inner support block, one end of the second elastic member is connected to the inner side wall of the first bracket plate, and the other end is connected to the slide seat, so as to provide elastic support for the slide seat.

10. The metal sheet stamping die according to claim 4, characterized in that: The upper part of the bottom plate is located on one side of the inner support block and is also provided with a rolling support assembly, which is used to provide rolling support for the metal plate to be stamped. The rolling support assembly includes a plurality of second support rollers, which are spaced in sequence along the length direction of the base plate. A second bracket plate is rotatably provided at the end of each group of second support rollers, and the second bracket plate is fixedly mounted on the upper portion of the base plate.

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