Sheet metal die and sheet metal processing device

Abstract

The invention discloses a sheet metal mold and a sheet metal machining device. The metal plate die comprises a female die assembly and a male die assembly. The female die assembly is used for bearing a workpiece, and the workpiece comprises a first part protruding out of the female die assembly. The male die assembly comprises a rotatable male die, the male die is used for being in contact with the first part in a face-to-face contact mode, the center of a rotating shaft of the male die coincides with the center of a bending arc of the first part, and the male die assembly is configured to be in a driven state. The male die rotates around the center of a rotating shaft of the male die so that the male die can bend the workpiece through the first part. Thus, in the metal plate die, the center of the rotating shaft of the male die is located in the center of the bending arc of the first part, when a material to be bent is bent, the male die makes contact with a workpiece in a face-to-face contact mode, and bending marks can be avoided to the maximum extent through extrusion generated by rotation.

Description

Technical Field

[0001] This application relates to the field of sheet metal processing technology, and more specifically, to a sheet metal mold and a sheet metal processing device. Background Technology

[0002] Currently, when sheet metal processing equipment bends metal sheets, the contact between the metal sheet and the die is a line-to-surface contact, which easily leaves multiple bending marks on the surface of the finished metal sheet, thus affecting the appearance of the metal sheet. Summary of the Invention

[0003] This application provides a sheet metal mold and a sheet metal processing device that can solve the problem of bending marks remaining on the workpiece during sheet metal mold processing.

[0004] An embodiment of this application provides a sheet metal mold comprising a die assembly and a punch assembly. The die assembly carries a workpiece, the workpiece including a first portion protruding from the die assembly. The punch assembly includes a rotatable punch for contacting the first portion in a face-to-face manner. The center of rotation of the punch coincides with the center of the bending arc of the first portion. The punch assembly is configured such that, in a driven state, the punch rotates about the center of rotation of the punch, causing the punch to bend the workpiece through the first portion.

[0005] In the aforementioned sheet metal mold, since the rotation axis center of the punch is located at the bending arc center of the first part, and the punch contacts the workpiece in a surface-to-surface contact manner, the extrusion generated by the rotation can minimize the generation of bending marks when bending the material to be bent.

[0006] In some embodiments, the die assembly includes a guide block with a first arc surface and the punch with a second arc surface, the first arc surface contacting the second arc surface, the guide block being used to guide the punch to rotate by the interaction of the first arc surface and the second arc surface when the punch rotates about the center of the punch's rotation axis.

[0007] Thus, by setting guide blocks in the sheet metal mold, and with the arc surface of the guide block engaging with the arc surface of the punch while the punch is rotating, the punch is guided to rotate and supported when the punch stops, preventing the punch from continuing to rotate and affecting the bending angle of the workpiece.

[0008] In some embodiments, the sheet metal mold includes an upper mold base, and the punch assembly includes a connecting rod, a connecting rod retainer, and an upper ejector plate. The connecting rod retainer is mounted on the upper mold base. One end of the connecting rod is rotatably connected to the connecting rod retainer, and the other end of the connecting rod is rotatably connected to the punch. The punch is rotatably connected to the upper ejector plate. The upper mold base is configured such that, in a driven state, the upper mold base drives the connecting rod to rotate the punch about the center of the punch's rotation axis.

[0009] Thus, by setting a connecting rod, a connecting rod fixing seat, and an upper ejector plate inside the sheet metal mold, the punch can be provided with the support required for rotation, and under the drive of the upper mold base connecting rod, the power required for the punch to rotate around the center of the punch's rotation axis can be provided.

[0010] In some embodiments, when the sheet metal mold is in the closed state, the angle between the axis of the connecting rod and the direction of gravity is less than 25 degrees, so as to reduce the stress on the connecting rod.

[0011] Thus, by adjusting the angle between the connecting rod axis and the direction of gravity to less than 25 degrees when the sheet metal mold is in the closed state, the stress on the connecting rod can be reduced, preventing damage to the connecting rod under the drive of the upper mold base and improving the service life of the connecting rod.

[0012] In some embodiments, the sheet metal mold includes a support plate and an elastic element. The support plate and the punch assembly are located on opposite sides of the upper mold base, respectively. The support plate is fixedly connected to the upper mold base. The elastic element passes through the upper mold base. One end of the elastic element is connected to the support plate, and the other end of the elastic element is spaced apart from the upper ejector plate. The support plate is configured such that, in a driven state, the support plate presses against the upper ejector plate through the elastic element, thereby causing the elastic element to squeeze the upper ejector plate.

[0013] Thus, by setting an elastic element and a support plate inside the sheet metal mold, with one end of the elastic element connected to the support plate, the support plate can squeeze the elastic element when the support plate is driven, so that the elastic element can fix the workpiece, and the elastic element can play a buffering role during bending, avoiding damage to the workpiece during the driving process.

[0014] In some embodiments, the sheet metal mold includes a fixed shaft that is fixedly connected to the upper ejector plate, and the punch is rotatably connected to the fixed shaft.

[0015] Thus, by fixing a fixed shaft on the upper ejector plate, the punch can be rotatably connected around the fixed shaft, thereby enabling the punch to bend the workpiece when rotating around the fixed shaft.

[0016] In some embodiments, the sheet metal mold includes a leveling sleeve that connects the upper mold base and the upper ejector plate, and the leveling sleeve is used to fix the upper ejector plate.

[0017] Thus, by setting an equal-height sleeve in the sheet metal mold, and connecting the equal-height sleeve to the upper mold base and the upper ejector plate, the upper ejector plate can be fixed and supported when the sheet metal mold is in the open state.

[0018] In some embodiments, the sheet metal mold includes an upper mold base, a lower mold base, and a limiting post. The die cavity assembly is disposed on the side of the lower mold base facing the upper mold base, and the punch assembly is disposed on the side of the upper mold base facing the lower mold base. The limiting post connects at least one of the upper mold base and the lower mold base. The limiting post is used to limit the distance between the upper mold base and the lower mold base in the closed state of the sheet metal mold to control the bending angle of the workpiece.

[0019] Thus, by setting a limiting post between the upper and lower die bases, the limiting post can limit the distance between the upper and lower die bases, preventing the driving component from continuing to drive the upper die base to move. This allows for control of the workpiece's bending angle and improves the accuracy of the workpiece reaching the preset angle.

[0020] In some embodiments, the die assembly includes a die and a die fixing block, the die being disposed on the die fixing block, the die fixing block being disposed on the lower die base, and the lower die base being used to support the die fixing block.

[0021] Thus, by setting a die and a die fixing block inside the sheet metal mold, the workpiece on the die is pressed onto the die by the upper ejector plate under the drive of the drive component, so that the die and the die fixing block can fix and support the workpiece during the bending process.

[0022] The sheet metal processing apparatus of this application includes the sheet metal mold and drive component described in any of the above claims.

[0023] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0025] Figure 1 This is a schematic diagram of the sheet metal processing apparatus according to certain embodiments of this application;

[0026] Figure 2This is a structural schematic diagram of a sheet metal mold according to certain embodiments of this application;

[0027] Figure 3 This is a schematic diagram of a workpiece bent at 0 degrees according to certain embodiments of this application;

[0028] Figure 4 This is a schematic diagram of a workpiece bent at 30 degrees according to certain embodiments of this application;

[0029] Figure 5 This is a schematic diagram of a workpiece bent at 60 degrees according to certain embodiments of this application;

[0030] Figure 6 This is a schematic diagram of a workpiece bent at 90 degrees according to certain embodiments of this application.

[0031] Icon labels:

[0032] 100. Sheet metal processing device; 10. Sheet metal mold; 11. Die assembly; 111. Die; 112. Die fixing block; 113. Guide block; 1131. First arc surface; 12. Punch assembly; 121. Punch; 1211. Second arc surface; 122. Connecting rod; 123. Connecting rod fixing seat; 124. Upper ejector plate; 13. Upper mold base; 14. Support plate; 15. Elastic element; 16. Fixed shaft; 17. Lower mold base; 18. Limiting post; 19. Equal height sleeve; 20. Driving element; 200. Workpiece; 210. First part; B1. Rotation axis center; B2. Bending arc center. Detailed Implementation

[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying 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 with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0034] In the description of this application, it should be understood that the terms "thickness," "upper," "top," "bottom," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly. In one example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections, electrical connections, or connections that allow communication between them; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements or interactive relationships between two elements.

[0036] In embodiments of this application, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] Please see Figure 1 and Figure 2 An embodiment of the present application provides a sheet metal mold 10, which includes a die assembly 11 and a punch assembly 12. The die assembly 11 is used to carry a workpiece 200, and the workpiece 200 includes a first portion 210 protruding from the die assembly 11. The punch assembly 12 includes a rotatable punch 121, which is used to contact the first portion 210 in a surface-to-surface contact manner. The rotation axis center B1 of the punch 121 coincides with the bending arc center B2 of the first portion 210. The punch assembly 12 is configured such that, in a driven state, the punch 121 rotates about the rotation axis center B1 of the punch 121, causing the punch 121 to bend the workpiece 200 through the first portion 210.

[0038] Thus, in the sheet metal mold 10 described above, since the rotation axis center B1 of the punch 121 is located at the bending arc center B2 of the first part 210, when bending the material to be bent, the punch 121 contacts the workpiece 200 in a surface-to-surface contact manner, and the extrusion generated by rotation can avoid or reduce bending marks to a certain extent.

[0039] The sheet metal processing device 100 is a machine used to bend a workpiece 200 into a desired shape. The sheet metal processing device includes a sheet metal mold 10 and a drive component 20. The working principle of the sheet metal processing device 100 is as follows: the workpiece 200 is fixed on a worktable and put into contact with the sheet metal mold 10. Then, through hydraulic or mechanical operation, the upper and lower molds are tightened inward to bend the sheet metal, and a series of operations such as folding and cutting are performed according to a preset angle. The workpiece 200 includes, but is not limited to, metal sheets, plastic sheets, etc.

[0040] Specifically, the sheet metal processing device 100 includes a sheet metal mold 10 and a drive component 20. The sheet metal mold 10 is used to process the workpiece 200, bending the workpiece 200 to a preset angle. The drive component 20 can be a pneumatic sheet metal processing device or a hydraulic press, etc., and provides the power required for the sheet metal mold 10 to bend the workpiece 200.

[0041] The sheet metal mold 10 includes a die cavity assembly 11 and a punch assembly 12. The die cavity assembly 11 is used to fix and support the workpiece 200, and when the workpiece 200 is placed on the die cavity assembly 11, the first part 210 of the workpiece 200 that needs to be bent protrudes from the die cavity assembly 11.

[0042] The punch assembly 12 includes a rotatable punch 121. The punch 121 can be a sector-shaped column, with its side surface capable of contacting the side surface of the first portion 210 of the workpiece 200, and its rotation axis center B1 coinciding with the bending arc center B2 of the first portion 210. Thus, under the drive of the drive member 20, the punch assembly 12 can drive the punch 121 to rotate around its rotation axis center B1, causing the first portion 210 of the workpiece 200 to be compressed and bent around the bending arc center B2 under the rotation of the punch 121, thereby bending the first portion 210 to a preset angle.

[0043] Please see Figure 2In some embodiments, the die assembly 11 includes a guide block 113, the guide block 113 includes a first arc surface 1131, the punch 121 includes a second arc surface 1211, the first arc surface 1131 contacts the second arc surface 1211, and the punch 121 limiting block is used to guide the punch 121 to rotate by the first arc surface 1131 and the second arc surface 1211 cooperating with each other when the punch 121 rotates about the rotation axis center B1 of the punch 121.

[0044] Thus, by setting guide block 113 in sheet metal mold 10, and when punch 121 rotates, the arc surface of guide block 113 can cooperate with the arc surface of punch 121, thereby guiding punch 121 to rotate and supporting punch 121 when punch 121 stops, preventing punch 121 from continuing to rotate and affecting the bending angle of workpiece 200.

[0045] Specifically, the sheet metal mold 10 includes a guide block 113, which guides the punch 121 when it rotates and provides support to the punch 121 when it stops rotating. The guide block 113 can be a quadrangular prism, and it includes a first arc surface 1131 disposed on the side of the quadrangular prism, which can contact the second arc surface 1211 of the punch 121. When the punch 121 rotates around the center B1 of its rotation axis, the first arc surface 1131 and the second arc surface 1211 cooperate to guide the direction and angle of the punch 121's rotation. When the punch 121 stops rotating around the center B1 of its rotation axis, the frictional force between the first arc surface 1131 and the second arc surface 1211 can support the punch 121 and prevent the punch 121 from continuing to move under the influence of gravity, thereby improving the accuracy of the bending angle of the workpiece 200.

[0046] Please see Figures 3 to 6 In some embodiments, the sheet metal mold 10 includes an upper mold base 13, and the punch assembly 12 includes a connecting rod 122, a connecting rod fixing seat 123, and an upper ejector plate 124. The connecting rod fixing seat 123 is mounted on the upper mold base 13. One end of the connecting rod 122 is rotatably connected to the connecting rod fixing seat 123, and the other end of the connecting rod 122 is rotatably connected to the punch 121. The punch 121 is rotatably connected to the upper ejector plate 124. The upper mold base 13 is configured such that, in a driven state, the upper mold base 13 drives the connecting rod 122 to move so as to drive the punch 121 to rotate around the rotation axis center B1 of the punch 121.

[0047] Thus, by providing a connecting rod 122, a connecting rod fixing seat 123, and an upper ejector plate 124 within the sheet metal mold 10, the punch 121 can be provided with the support required for rotation, and under the drive of the upper mold base 13 and the connecting rod 122, the punch 121 can be provided with the power required for rotation around the rotation axis center B1 of the punch 121.

[0048] Specifically, the sheet metal mold 10 includes an upper mold base 13, which can be a rectangular plate made of cast iron, cast steel or aluminum alloy, and the upper mold base 13 can play a role in fixing and supporting during the operation of the sheet metal mold 10.

[0049] The punch assembly 12 includes a connecting rod 122, a connecting rod fixing seat 123, and an upper ejector plate 124. The connecting rod 122 is a mechanical part that converts linear motion into curvilinear motion. One end of the connecting rod 122 is rotatably connected to the punch 121 via a rotating shaft, so that the rotation of the connecting rod 122 drives the punch 121 to rotate, thus pressing the workpiece 200 for bending. Furthermore, when the sheet metal mold 10 is in the closed state, the angle A between the axis of the connecting rod 122 and the direction of gravity is less than 25 degrees, thereby reducing the stress on the connecting rod 122 under the drive of the driving component 20, preventing damage to the connecting rod 122, and increasing its service life. The angle A can be determined according to actual conditions. For example, the angle A can be 22 degrees, 20 degrees, 15 degrees, 13 degrees, 10 degrees, 5 degrees, 0 degrees, etc. Thus, by adjusting the angle between the axis of the connecting rod 122 and the direction of gravity to less than 25 degrees when the sheet metal mold 10 is in the closed state, the stress on the connecting rod 122 can be reduced, preventing the connecting rod 122 from being damaged under the drive of the drive component 20, and improving the service life of the connecting rod 122.

[0050] Optionally, the angle A between the axis of the connecting rod 122 and the direction of gravity can be less than 50 degrees. For example, the angle A can be 45 degrees, 40 degrees, 38 degrees, 35 degrees, 30 degrees, 28 degrees, etc. When the angle A between the axis of the connecting rod 122 and the direction of gravity is between 25 degrees and 50 degrees, the connecting rod 122 can drive the punch 121 to rotate under the drive of the driving member 20. At this time, the stress on the connecting rod 122 is greater than the stress when the angle A between the axis of the connecting rod 122 and the direction of gravity is less than 25 degrees.

[0051] The connecting rod fixing seat 123 is mounted on the side of the upper die base 13 near the punch assembly 12 by screws or welding. One end of the connecting rod fixing seat 123 is rotatably connected to the connecting rod 122 via a rotating shaft, so that the connecting rod fixing seat 123 can transmit the power of the driving member 20 to drive the connecting rod 122 to rotate. For example, under the drive of the driving member 20, the upper die base 13 drives the connecting rod fixing seat 123 to move along the direction of gravity. The connecting rod fixing seat 123 can squeeze the connecting rod 122 to drive it to rotate, so that the connecting rod 122 can drive the punch 121 to rotate around the rotation axis center B1 of the punch 121, and then the punch 121 squeezes the workpiece 200 to a preset bending angle.

[0052] The upper ejector plate 124 can be fixedly connected to the upper die base 13. Under the drive of the drive member 20, the upper ejector plate 124 can press the workpiece 200 to fix the workpiece 200. Furthermore, the upper ejector plate 124 can be rotatably connected to the punch 121 by providing a rotating shaft, so as to provide support for the punch 121 without restricting the punch 121 from bending the workpiece 200.

[0053] Please see Figures 3 to 6 In some embodiments, the sheet metal mold 10 includes a support plate 14 and an elastic member 15. The support plate 14 and the punch assembly 12 are located on opposite sides of the upper mold base 13, respectively. The support plate 14 is fixedly connected to the upper mold base 13. The elastic member 15 passes through the upper mold base 13. One end of the elastic member 15 is connected to the support plate 14, and the other end of the elastic member 15 is spaced apart from the upper ejector plate 124. The support plate 14 is configured such that, in a driven state, the support plate 14 presses the upper ejector plate 124 through the elastic member 15, thereby driving the elastic member 15 to squeeze the upper ejector plate 124.

[0054] Thus, by providing an elastic element 15 and a support plate 14 inside the sheet metal mold 10, and connecting one end of the elastic element 15 to the support plate 14, the support plate 14 can squeeze the elastic element 15 when the support plate 14 is driven, so that the elastic element 15 can fix the workpiece 200, and the elastic element 15 can play a buffering role during bending, so as to avoid damage to the workpiece 200 during the driving process.

[0055] Specifically, the sheet metal mold 10 includes a support plate 14 and an elastic element 15. The support plate 14 can be a rectangular plate made of cast iron, cast steel or aluminum alloy. The punch 121 can be fixedly connected to the upper mold base 13 by means of pads. The support plate 14 and the punch assembly 12 are arranged on opposite sides of the upper mold base 13. The support plate 14 can be used to support the driving element 20, so that the driving element 20 can press the support plate 14.

[0056] The elastic element 15 can be a nitrogen spring or a metal coil spring, or other elastic device. A through hole is provided in the upper mold base 13, allowing the elastic element 15 to pass through it. One end of the elastic element 15 can be fixed to one side of the support plate 14 via a nut or similar connection, while the other end of the elastic element 15 is spaced apart from the upper ejector plate 124. The distance between the elastic element 15 and the upper ejector plate 124 can be 1 mm to 2 mm, thus preventing pre-tightening of the upper ejector plate 124 by the nitrogen spring under gravity.

[0057] When the sheet metal mold 10 is closed, the drive member 20 can drive the pallet 14 to move along the direction of gravity, so that the pallet 14 can squeeze the elastic member 15, and the elastic member 15 squeezes the upper release plate 124 to fix the workpiece 200.

[0058] For example, when the workpiece 200 needs to be bent at angles of 0 degrees, 30 degrees, 60 degrees, and 90 degrees, the displacement of the drive plate 14 along the direction of gravity is different, and the elastic element 15 will also move accordingly.

[0059] Please see Figures 3 to 6 In some embodiments, the sheet metal mold 10 includes a fixed shaft 16, which is fixedly connected to the upper ejector plate 124, and the punch 121 is rotatably connected to the fixed shaft 16.

[0060] Thus, by fixing the fixed shaft 16 on the upper ejector plate 124, the punch 121 can be rotatably connected around the fixed shaft 16, thereby enabling the punch 121 to bend the workpiece 200 when rotating around the fixed shaft 16.

[0061] Specifically, the sheet metal mold 10 also includes a fixed shaft 16, which can be used to connect the punch 121 and the upper ejector plate 124. The fixed shaft 16 is fixed to the end of the upper ejector plate 124 near the punch 121 by means of a nut or welding. The fixed shaft 16 has a through hole, and the punch 121 can be rotatably connected to the fixed shaft 16 by means of a rotating shaft passing through the through hole. Thus, under the drive of the driving member 20, the punch 121 can rotate around the rotating shaft passing through the fixed shaft 16.

[0062] Please see Figures 3 to 6 In some embodiments, the sheet metal mold 10 includes a leveling sleeve 19, which connects the upper mold base 13 and the upper ejector plate 124, and is used to fix the upper ejector plate 124.

[0063] Thus, by providing an equal-height sleeve 19 in the sheet metal mold 10, and by connecting the equal-height sleeve 19 to the upper mold base 13 and the upper ejector plate 124, the upper ejector plate 124 can be fixed and supported when the sheet metal mold 10 is in the open mold state.

[0064] Specifically, the sheet metal mold 10 also includes a height-adjusting sleeve 19, which is used to fix the upper ejector plate 124 and adjust the distance between the upper ejector plate 124 and the upper mold base 13. One end of the height-adjusting sleeve 19 can be fixed to the upper mold base 13 by a nut or welding, and the other end of the height-adjusting sleeve 19 can be fixed to the upper ejector plate 124 by a nut or welding. This prevents the upper ejector plate 124 from moving under gravity when the sheet metal mold 10 is in the open state. When the sheet metal mold 10 is in the closed state, the height-adjusting sleeve 19 can press against the upper ejector plate 124, which in turn presses against the workpiece 200, thereby fixing the workpiece 200.

[0065] Please see Figures 3 to 6 In some embodiments, the sheet metal mold 10 includes an upper mold base 13, a lower mold base 17, and a limiting post 18. The die assembly 11 is disposed on the side of the lower mold base 17 facing the upper mold base 13, and the punch assembly 12 is disposed on the side of the upper mold base 13 facing the lower mold base 17. The limiting post 18 connects at least one of the upper mold base 13 and the lower mold base 17. The limiting post 18 is used to limit the distance between the upper mold base 13 and the lower mold base 17 in the closed state of the sheet metal mold 10, so as to control the bending angle of the workpiece 200.

[0066] Thus, by setting a limiting post 18 between the upper mold base 13 and the lower mold base 17, the limiting post 18 can limit the distance between the upper mold base 13 and the lower mold base 17, and the driving component 20 can no longer drive the upper mold base 13 to move, thereby enabling control of the bending angle of the workpiece 200 and improving the accuracy of the workpiece 200 reaching the preset angle.

[0067] Specifically, the sheet metal mold 10 also includes an upper mold base 13, a lower mold base 17, and a limiting post 18, which can each serve as a supporting component of the sheet metal mold 10. The die cavity assembly 11 is mounted on the side of the lower mold base 17 facing the upper mold base 13 by means of a nut or welding, providing support for the die cavity assembly 11. The punch assembly 12 is mounted on the side of the upper mold base 13 facing the lower mold base 17, and the upper mold base 13 provides support for the punch assembly 12.

[0068] The limiting post 18 can be a cylinder or prism made of rubber, stainless steel, or metal. The limiting post 18 is disposed between the upper mold base 13 and the lower mold base 17, and is fixedly connected to at least one of the upper mold base 13 and the lower mold base 17 by means of a nut or welding. For example, the limiting post 18 can be disposed on the upper mold base 13 by means of a nut or welding; the limiting post 18 can be disposed on the lower mold base 17 by means of a nut or welding; the limiting post 18 can be disposed on both the upper mold base 13 and the lower mold base 17 by means of a nut or welding. Thus, when the sheet metal mold 10 is in the closed state, the limiting post 18 can limit the distance between the upper mold base 13 and the lower mold base 17. Furthermore, after the workpiece 200 is bent to a preset angle, the limiting post 18 can limit the punch 121 from continuing to bend the workpiece 200, thereby improving the accuracy of the bending angle of the workpiece 200.

[0069] Optionally, when the limiting posts 18 are respectively provided on the upper mold base 13 and the lower mold base 17, the limiting posts 18 can be divided into a first limiting post 18 and a second limiting post 18. The first limiting post 18 is provided on the upper mold base 13 by means of a nut or welding, and the second limiting post 18 is provided on the lower mold base 17 by means of a nut or welding. The length of the first limiting post 18 is greater than the length of the second limiting post 18. Driven by the driving component 20, the upper mold base 13 moves closer to the lower mold base 17, thereby allowing the first limiting post 18 to press against the second limiting post 18, thus limiting the distance between the upper mold base 13 and the lower mold base 17. When it is necessary to change the length of the first limiting post 18 and the second limiting post 18, limiting blocks can be added to the first limiting post 18 and the second limiting post 18 to increase their length.

[0070] For example, when the workpiece 200 needs to be bent at an angle of 0 degrees, the limiting post 18 will not restrict the distance between the upper mold base 13 and the lower mold base 17; when the workpiece 200 needs to be bent at angles of 30 degrees, 60 degrees and 90 degrees, the limiting post 18 can restrict the distance between the upper mold base 13 and the lower mold base 17.

[0071] Please see Figures 3 to 6 In some embodiments, the die assembly 11 includes a die 111 and a die fixing block 112. The die 111 is disposed on the die fixing block 112, and the die fixing block 112 is disposed on the lower die base 17, which is used to support the die fixing block 112.

[0072] Thus, by setting a die 111 and a die fixing block 112 inside the sheet metal mold 10, the workpiece 200 on the die 111 is pressed onto the die 111 by the upper ejector plate 124 under the drive of the drive member 20, so that the die 111 and the die fixing block 112 can fix and support the workpiece 200 during the bending process.

[0073] Specifically, the die assembly 11 further includes a die 111 and a die fixing block 112. The die 111 can be a rectangular block made of metal, capable of supporting and fixing the workpiece 200. For example, when the sheet metal mold 10 is in the open state, the workpiece 200 is placed on the die 111. Driven by the drive member 20, the upper ejector plate 124 can press the workpiece 200 onto the die 111. Thus, when the sheet metal mold 10 is in the closed state, the upper ejector plate 124 presses the workpiece 200 to fix it on the die 111.

[0074] The die fixing block 112 can be used to fix the die 111. One end of the die fixing block 112 is fixed to the lower die base 17 by means of a nut or welding, and the die 111 is fixed to the other end of the die fixing block 112 by means of a nut or welding.

[0075] In the description of this specification, the references to terms such as "some embodiments," "in one example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are optional and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A sheet metal mold, characterized in that, The sheet metal mold includes: A die assembly for carrying a workpiece, the workpiece including a first portion protruding from the die assembly; A punch assembly including a rotatable punch for contacting the first portion in a face-to-face manner, the center of rotation axis of the punch coinciding with the center of bending arc of the first portion, the punch assembly being configured such that, in a driven state, the punch rotates about the center of rotation axis of the punch to bend the workpiece through the first portion.

2. The sheet metal mold according to claim 1, characterized in that, The die assembly includes a guide block, the guide block includes a first arc surface, and the punch includes a second arc surface. The first arc surface contacts the second arc surface. The guide block is used to guide the punch to rotate by the interaction of the first arc surface and the second arc surface when the punch rotates around the center of the punch's rotation axis.

3. The sheet metal mold according to claim 1, characterized in that, The sheet metal mold includes an upper mold base, and the punch assembly includes a connecting rod, a connecting rod fixing seat, and an upper ejector plate. The connecting rod fixing seat is mounted on the upper mold base. One end of the connecting rod is rotatably connected to the connecting rod fixing seat, and the other end of the connecting rod is rotatably connected to the punch. The punch is rotatably connected to the upper ejector plate. The upper mold base is configured such that, in a driven state, the upper mold base drives the connecting rod to move, thereby causing the punch to rotate around the center of the punch's rotation axis.

4. The sheet metal mold according to claim 3, characterized in that, When the sheet metal mold is in the closed state, the angle between the axis of the connecting rod and the direction of gravity is less than 25 degrees, so as to reduce the stress on the connecting rod.

5. The sheet metal mold according to claim 3, characterized in that, The sheet metal mold includes a support plate and an elastic element. The support plate and the punch assembly are located on opposite sides of the upper mold base. The support plate is fixedly connected to the upper mold base. The elastic element passes through the upper mold base. One end of the elastic element is connected to the support plate, and the other end of the elastic element is spaced apart from the upper ejector plate. The support plate is configured such that, in a driven state, the support plate presses against the upper ejector plate through the elastic element, thereby causing the elastic element to squeeze the upper ejector plate.

6. The sheet metal mold according to claim 3, characterized in that, The sheet metal mold includes a fixed shaft, which is fixedly connected to the upper ejector plate, and the punch is rotatably connected to the fixed shaft.

7. The sheet metal mold according to claim 3, characterized in that, The sheet metal mold includes a height equalizing sleeve, which connects the upper mold base and the upper stripper plate, and is used to fix the upper stripper plate.

8. The sheet metal mold according to claim 1, characterized in that, The sheet metal mold includes an upper mold base, a lower mold base, and a limiting post. The die cavity assembly is located on the side of the lower mold base facing the upper mold base, and the punch assembly is located on the side of the upper mold base facing the lower mold base. The limiting post connects at least one of the upper mold base and the lower mold base. The limiting post is used to limit the distance between the upper mold base and the lower mold base in the closed state of the sheet metal mold to control the bending angle of the workpiece.

9. The sheet metal mold according to claim 8, characterized in that, The die assembly includes a die and a die fixing block. The die is disposed on the die fixing block, and the die fixing block is disposed on the lower die base. The lower die base is used to support the die fixing block.

10. A sheet metal processing device, characterized in that, Includes the sheet metal mold and drive component as described in any one of claims 1-9.

Images