Bending device

Abstract

The application relates to the field of processing equipment, in particular to a bending device. The bending device comprises a lower die and an upper die matched with each other and used for bending a workpiece, the lower die comprises a lower die base, a bearing mechanism and a bending mechanism, the bearing mechanism comprises a bearing piece configured to bear the workpiece, the bending mechanism comprises a bending assembly arranged close to the bearing piece and an extrusion assembly arranged close to the bending assembly, the bending assembly is configured to abut the lower side of the end of the workpiece, the extrusion assembly comprises an extrusion base and an extrusion block, the extrusion base is arranged on the lower die base, one side of the extrusion base close to the bending mechanism is provided with a sliding slope, the distance between the sliding slope and the bending mechanism gradually increases, and the extrusion block is slidingly arranged on the sliding slope and opposite to the part to be bent of the workpiece. The upper die comprises an upper die base and a pressing assembly, and the pressing assembly is arranged opposite to the bearing piece. The bending device can bend the workpiece, and can effectively avoid the convex deformation of the inner side of the workpiece and the cracking of the outer side.

Description

Technical Field

[0001] This application relates to the field of processing equipment technology, specifically to a bending device. Background Technology

[0002] In the bending process of strip metal materials, the middle part of the strip metal material is usually fixed first, and then external force is applied to its ends to bend it according to a predetermined angle and shape. During this process, the surface area of ​​the inner side of the strip metal material remains unchanged, while the neutral layer moves inward, causing the material on the inner side to bulge in a direction parallel to the neutral layer. At the same time, the outer side deforms due to tension. If the degree of tension exceeds the elastic limit of the strip metal material, cracks may appear on the outer surface due to overstretching, and in severe cases, it may even lead to the strip metal material cracking. Utility Model Content

[0003] In view of the above, it is necessary to propose a bending device that can bend workpieces and effectively avoid bulging deformation on the inner side and cracking on the outer side of the workpiece.

[0004] This application provides a bending device, including a lower die and an upper die that are adapted to each other for bending workpieces. The lower die includes a lower die base, a supporting mechanism, and a bending mechanism. The supporting mechanism includes a supporting member movably disposed on the lower die base along a first direction, the supporting member being configured to support the workpiece. The bending mechanism includes a bending component disposed near the supporting member along a second direction and an extrusion component disposed near the bending component along a third direction. The bending component is configured to abut against the lower end of the workpiece. The extrusion component includes an extrusion seat and an extrusion block. The extrusion seat is disposed on the lower die base, and the extrusion seat has a sliding inclined surface disposed on the side near the bending mechanism along the third direction. The distance between the workpiece and the bending mechanism gradually increases along the first direction. The extrusion block is slidably disposed on the sliding inclined surface and opposite to the part of the workpiece to be bent. The upper die includes an upper die base and a holding assembly. The upper die base is disposed opposite to the lower die base. The holding assembly is disposed opposite to the carrier along the first direction. The first direction, the second direction, and the third direction are perpendicular to each other. The holding assembly is configured to push the workpiece and the carrier to move along the first direction. The bending mechanism is configured to bend the end of the workpiece. The upper die base pushes the extrusion block to slide along the sliding inclined surface so that the extrusion block extrudes the part of the workpiece to be bent along the third direction.

[0005] The aforementioned bending device includes a lower die and an upper die that are fitted together. The bearing component of the bearing mechanism in the lower die can support the middle part of the workpiece, and the pressing component in the upper die can press the middle part of the workpiece supported by the bearing component and press the workpiece downward. The bending component of the bending mechanism can bend the end of the workpiece. During bending, the pressing block of the pressing component moves along the pressing slope of the pressing seat towards the side of the workpiece, thereby pressing the side of the workpiece and preventing the side of the workpiece from bulging. Because the workpiece is pressed by the pressing block, its material cannot deform towards the side opposite to the pressing block after bending, and can only deform towards the side away from the pressing component, that is, towards the outside of the workpiece. This effectively prevents the outside of the workpiece from cracking after bending.

[0006] In some embodiments, the carrier is provided with a pushing portion opposite to the bending assembly; the bending assembly includes a bending swing block and a swing block positioning member, the bending swing block is rotatably connected to the lower die base about a first axis parallel to the third direction, the bending swing block includes a driving portion and a bending portion, the driving portion is disposed close to the carrier and is opposite to the pushing portion along the first direction, the bending portion is provided with a bending surface for abutting the lower side of the end of the workpiece, the pushing portion pushes the driving portion away from the upper die base, so that the driving portion drives the bending portion to rotate about the first axis, the bending surface abuts the end of the workpiece to bend the workpiece, and the swing block positioning member is disposed on the side of the bending swing block away from the upper die base along the first direction, the swing block positioning member is configured to position the bending swing block.

[0007] In some embodiments, the bending mechanism further includes a non-marking component, the non-marking component including a non-marking ornament, the non-marking ornament being rotatably connected to one end of the bending portion away from the driving portion about a second axis parallel to the third direction, the non-marking ornament being provided with an abutment surface connected to the bending surface, the abutment surface being configured to abut against the lower side of the end of the workpiece and rotate with the end of the workpiece.

[0008] In some embodiments, the traceless ornament has a reset groove on the side away from the contact surface, the bottom of the reset groove is arc-shaped, and the bent portion has a receiving hole communicating with the reset groove; the traceless component also includes a reset pin and a first elastic member, the reset pin is movably disposed in the receiving hole and abuts against the bottom of the reset groove, the first elastic member is disposed in the receiving hole and abuts against the end of the reset pin away from the reset groove, the first elastic member is used to push the reset pin toward the reset groove, so that the reset pin pushes the traceless ornament to rotate and reset around the second axis.

[0009] In some embodiments, the extrusion seat has a sliding groove, which is located on the side of the sliding inclined surface away from the support member, and the extending direction of the sliding groove is parallel to the plane of the sliding inclined surface. The extrusion block has a sliding protrusion adapted to the sliding groove on the side away from the support member. The sliding protrusion is slidably disposed in the sliding groove, and the sliding protrusion cooperates with the sliding groove to limit the movement direction of the extrusion block.

[0010] In some embodiments, the bearing mechanism further includes a reset assembly, which includes a push rod, a top plate, and a second elastic member. The push rod is disposed on the side of the bearing member away from the pressing assembly, the top plate is disposed on the side of the push rod away from the bearing member, and the second elastic member is disposed on the side of the top plate away from the push rod. The two ends of the second elastic member abut against the bottom of the lower mold base and the top plate, respectively. The second elastic member is used to push the top plate and the push rod to move along the first direction to reset the bearing member.

[0011] In some embodiments, the reset assembly further includes a bending reset rod connected to the side of the top plate away from the second elastic member, and one end of the bending reset rod away from the top plate abuts against the bending assembly. The bending reset rod is used to move with the top plate along the first direction to reset the bending assembly.

[0012] In some embodiments, the upper die further includes a pressure rod connected to the upper die base on the side near the lower die base, and the pressure rod is disposed opposite to the extrusion block. The pressure rod is configured to push the extrusion block toward the top plate, thereby causing the extrusion block to move along the sliding inclined plane to extrude the workpiece. The reset assembly further includes an ejector pin connected to the top plate on the side away from the second elastic member, and the ejector pin abuts against the side of the extrusion block away from the pressure rod. The ejector pin is used to move with the top plate in the first direction to reset the extrusion block.

[0013] In some embodiments, the supporting mechanism further includes two positioning blocks, both of which are connected to the side of the lower mold base near the upper mold base, and the two positioning blocks are respectively disposed on both sides of the supporting member along the second direction. The two positioning blocks are used to abut against the two sides of the workpiece along the second direction to position the workpiece.

[0014] In some embodiments, the pressing assembly includes a connector and a pressing member. The pressing member is connected to the side of the upper mold base facing the lower mold base. The connector is provided with a trapezoidal portion, the upper base of which faces the support member, and the lower base of which is away from the support member. The pressing member is disposed on the side of the connector along the second direction and slidably connected to the inclined surface of the trapezoidal portion. When the upper mold base moves the connector away from the support member, the pressing member slides along the inclined surface of the trapezoidal portion, thereby causing the pressing member to move away from the bending point of the workpiece along the second direction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the bending device provided in an embodiment of this application.

[0016] Figure 2 for Figure 1 The diagram shows the exploded structure of the bending device.

[0017] Figure 3 for Figure 2 The diagram shows a partial structural exploded view of the lower mold.

[0018] Figure 4 for Figure 3 The bending mechanism shown is a cross-sectional view along the IV-IV direction.

[0019] Figure 5 for Figure 1 The bending device shown is a cross-sectional view along the V-V direction after the mold is closed.

[0020] Figure 6 for Figure 5 The bending device shown is a cross-sectional view of the workpiece after bending.

[0021] Key component symbols: Bending device 100, lower die 10, lower die base 11, bearing mechanism 12, bearing member 121, pushing part 1211, reset assembly 122, ejector rod 1221, top plate 1222, second elastic member 1223, bending reset rod 1224, ejector pin 1225, positioning block 123, bending mechanism 13, bending assembly 131, bending swing block 1311, driving part 1311a, bending part 1311b, bending surface 1311c, receiving hole 1311d, swing block positioning member 1312, extrusion assembly Component 132, extrusion seat 1321, sliding inclined surface 1321a, sliding groove 1321b, extrusion block 1322, sliding protrusion 1322a, non-marking component 14, non-marking ornament 141, abutment surface 1411, reset groove 1412, reset pin 142, first elastic component 143, upper mold 20, upper mold seat 21, pressing component 22, connecting component 221, trapezoidal part 2211, pressing component 222, pressing rod 23, first axis a, second axis b, workpiece 200, middle part 201, part to be bent 202, end 203. Detailed Implementation

[0022] 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 this application, and should not be construed as limiting this application.

[0023] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are 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. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] The embodiments of this application will be further described below with reference to the accompanying drawings. To facilitate understanding and explanation of the embodiments of this application, a three-dimensional coordinate system is established in some of the drawings, with the X-axis direction being the second direction, the Y-axis direction being the third direction, and the Z-axis direction being the first direction. The X-axis, Y-axis, and Z-axis directions are perpendicular to each other.

[0026] Please see Figure 1 , Figure 2 and Figure 3 This application provides a bending device 100 for bending a workpiece 200, which can be a strip of metal material. When bending the workpiece 200, one end or both ends can be bent. The workpiece 200 includes a middle portion 201, a portion to be bent 202, and an end portion 203. The bending device 100 includes a lower die 10 and an upper die 20 that are fitted together.

[0027] Specifically, please refer to the following: Figure 4 The lower die 10 includes a lower die base 11, a supporting mechanism 12, and a bending mechanism 13. The supporting mechanism 12 includes a supporting member 121 movably disposed on the lower die base 11 in a first direction. The supporting member 121 is configured to support the workpiece 200. The bending mechanism 13 includes a bending component 131 disposed near the supporting member 121 in a second direction and an extrusion component 132 disposed near the bending component 131 in a third direction. The bending component 131 is configured to abut against the lower side of the end 203 of the workpiece 200. The extrusion component 132 includes an extrusion seat 1321 and an extrusion block 1322. The extrusion seat 1321 is disposed on the lower die base 11. A sliding inclined surface 1321a is disposed on the side of the extrusion seat 1321 near the bending mechanism 13 in a third direction. The distance between the sliding inclined surface 1321a and the bending mechanism 13 gradually increases in the first direction. The extrusion block 1322 is slidably disposed on the sliding inclined surface 1321a and is opposite to the bending portion 202 of the workpiece 200.

[0028] The support member 121 can be a plate-like structure. In this embodiment, the length of the support member 121 along the second direction is less than the length of the workpiece 200, so that the end 203 of the workpiece 200 is exposed when supporting the workpiece 200. In this embodiment, two bending mechanisms 13 can be provided, symmetrically arranged, respectively opposite to the two sides of the workpiece 200 in the second direction. In this embodiment, four extrusion components 132 can be provided, each opposite to the two ends 203 of the workpiece 200 along the third direction. The extrusion seat 1321 is fixedly connected to the lower die seat 11, and the extrusion block 1322 is slidably connected to the corresponding extrusion seat 1321. Before bending the workpiece 200, the extrusion block 1322 is positioned close to the upper end of the extrusion seat 1321. During the bending process, the extrusion block 1322 moves downwards, and then moves towards the workpiece 200 along the sliding inclined surface 1321a, thereby extruding the side of the workpiece 200 along the third direction and preventing the workpiece 200 from bulging along the third direction.

[0029] The upper mold 20 includes an upper mold base 21 and a pressing assembly 22. The upper mold base 21 is disposed opposite to the lower mold base 11, and the pressing assembly 22 is disposed opposite to the carrier member 121 along a first direction. The first direction, the second direction, and the third direction are all perpendicular to each other; please refer to [reference needed]. Figure 5 and Figure 6 The holding assembly 22 is configured to push the workpiece 200 and the carrier 121 to move in a first direction, the bending mechanism 13 is configured to bend the end 203 of the workpiece 200, and the upper die base 21 pushes the extrusion block 1322 to slide along the sliding slope 1321a so that the extrusion block 1322 extrudes the part 202 of the workpiece 200 to be bent in a third direction.

[0030] The bending device 100 provided in this embodiment includes a lower die 10 and an upper die 20 that are fitted together. The support member 121 of the support mechanism 12 in the lower die 10 can support the middle part 201 of the workpiece 200. The pressing component 22 in the upper die 20 can press the middle part 201 of the workpiece 200 supported by the support member 121 and press the workpiece 200 to move downward. The bending component 131 of the bending mechanism 13 can bend the end 203 of the workpiece 200. During bending, the pressing block 1322 of the pressing component 132 moves along the pressing slope of the pressing seat 1321 towards the side of the workpiece 200, thereby pressing the side of the workpiece 200 and preventing the side of the workpiece 200 from bulging. When subjected to the pressure of the extrusion block 1322, the material of the workpiece 200 cannot deform to the side opposite to the extrusion block 1322 after bending, and can only deform to the side away from the pressure holding component 22, that is, to the outside of the workpiece 200. This can effectively prevent the workpiece 200 from cracking on the outside after bending.

[0031] In some embodiments, see Figure 2 and Figure 3The support member 121 is provided with a pushing part 1211 opposite to the bending assembly 131. In this embodiment, the support member 121 is generally T-shaped, and the pushing part 1211 of the support member 121 is provided at the end that supports the workpiece 200.

[0032] The bending assembly 131 includes a bending swing block 1311 and a swing block positioning member 1312. The bending swing block 1311 is rotatably connected to the lower die base 11 about a first axis a parallel to the third direction. The bending swing block 1311 includes a driving part 1311a and a bending part 1311b. The driving part 1311a is disposed close to the support member 121 and is opposite to the pushing part 1211 in the first direction. The bending part 1311b is provided with a bend for abutting the lower side of the end 203 of the workpiece 200. The bending surface 1311c pushes the driving part 1311a away from the upper die base 21, so that the driving part 1311a drives the bending part 1311b to rotate around the first axis a. The bending surface 1311c pushes the end 203 of the workpiece 200 to bend the workpiece 200. The swing block positioning member 1312 is disposed on the side of the bending swing block 1311 away from the upper die base 21 along the first direction. The swing block positioning member 1312 is configured to position the bending swing block 1311.

[0033] The extension direction of the driving part 1311a of the bending swing block 1311 is perpendicular to the extension direction of the bending part 1311b. The bending surface 1311c is approximately an arc surface, and the structure of the bending surface 1311c is adapted to the shape of the workpiece 200 after bending. When bending the workpiece 200, the upper die 20 moves toward the lower die 10, the holding assembly 22 holds the middle part 201 of the workpiece 200 on the carrier 121, and holds the workpiece 200 and the carrier 121 downward. The pushing part 1211 of the carrier 121 abuts against the driving part 1311a of the bending swing block 1311, thereby driving the driving part 1311a to rotate around the first axis a. The driving part 1311a drives the bending part 1311b to rotate around the first axis a, and the bending part 1311b then bends the end 203 of the workpiece 200.

[0034] In this embodiment, the swing block positioning component 1312 is approximately L-shaped. It is used to position the bending swing block 1311. To ensure that the swing block positioning component 1312 does not affect the rotation of the bending swing block 1311, the side of the swing block positioning component 1312 that abuts against the bending swing block 1311 is set with an arc-shaped structure, and the side of the bending swing block 1311 corresponding to the swing block positioning block 123 is also set with an arc-shaped structure. By setting the swing block positioning block 123, it is ensured that the bending swing block 1311 maintains a stable position and angle during the bending process, avoiding inconsistencies in the bending effect due to the instability of the swing block, thereby improving the bending accuracy and quality.

[0035] In some embodiments, see Figure 2 , Figure 3and Figure 5 The bending mechanism 13 also includes a non-marking component 14, which includes a non-marking ornament 141. The non-marking ornament 141 is rotatably connected to one end of the bending portion 1311b away from the driving portion 1311a about a second axis b parallel to the third direction. The non-marking ornament 141 is provided with an abutment surface 1411, which is connected to the bending surface 1311c. The abutment surface 1411 is configured to abut against the lower side of the end 203 of the workpiece 200 and rotate with the end 203 of the workpiece 200.

[0036] The body of the seamless ornament 141 is generally cylindrical. The bending portion 1311b can have a circular groove corresponding to the seamless ornament 141 to accommodate its body. The abutment surface 1411 extends out of this circular groove and connects with the bending surface 1311c. Before bending the workpiece 200, the abutment surface 1411 is located in the XY plane. After placing the workpiece 200, the lower side of the workpiece 200 can abut against the abutment surface 1411. During the downward movement of the workpiece 200 held by the pressing assembly 22, the bending block 1311 rotates, thereby causing the end 203 of the seamless ornament 141 that abuts against the workpiece 200 to rotate relative to the middle part 201 of the workpiece 200, thus bending the workpiece 200. At this time, the seamless ornament 141 itself can rotate around the second axis b so that the abutment surface 1411 always contacts the workpiece 200 until the bending surface 1311c contacts the workpiece 200.

[0037] It is understandable that when bending workpiece 200, workpiece 200 will abut against the end of bending part 1311b away from driving part 1311a. At this time, bending part 1311b and workpiece 200 are in line contact. During the bending process, the initial contact position between bending part 1311b and workpiece 200 will cause indentation on workpiece 200, resulting in poor appearance of workpiece 200. By setting the non-marking ornament 141, the line contact between bending mechanism 13 and workpiece 200 can be changed to surface contact, effectively avoiding indentation on the surface of workpiece 200 and improving appearance yield.

[0038] In some embodiments, see Figure 3 , Figure 5 and Figure 6The non-marking ornament 141 has a reset groove 1412 on the side opposite to the contact surface 1411. The bottom of the reset groove 1412 is arc-shaped, and the bent portion 1311b has a receiving hole 1311d communicating with the reset groove 1412. The non-marking component 14 also includes a reset pin 142 and a first elastic member 143. The reset pin 142 is movably disposed in the receiving hole 1311d and abuts against the bottom of the reset groove 1412. The first elastic member 143 is disposed in the receiving hole 1311d and abuts against the end of the reset pin 142 away from the reset groove 1412. The first elastic member 143 is used to push the reset pin 142 toward the reset groove 1412 so that the reset pin 142 pushes the non-marking ornament 141 to rotate and reset around the second axis b.

[0039] The reset pin 142 has a columnar structure, and the first elastic element 143 can be a spring, etc. When bending the workpiece 200, the seamless ornament 141 rotates around the second axis b, pushing the reset pin 142 away from the seamless ornament 141 through the arc-shaped bottom of the reset groove 1412. The first elastic element 143 is compressed, and at this time, the reset pin 142 and the first elastic element 143 do not affect the rotation of the seamless ornament 141. After bending the workpiece 200, during demolding, the first elastic element 143 pushes the reset pin 142 towards the seamless ornament 141. The reset pin 142 abuts against the arc-shaped bottom of the reset groove 1412, thereby pushing the seamless ornament 141 to rotate in the opposite direction around the second axis b to complete the reset. The automatic reset function ensures that the seamless ornament 141 returns to its initial position after each bend, preparing for the next bend, reducing the need for manual intervention and improving the degree of automation.

[0040] In some embodiments, see Figure 3 and Figure 4 The extrusion seat 1321 has a sliding groove 1321b, which is located on the side of the sliding inclined surface 1321a away from the support member 121. The extension direction of the sliding groove 1321b is parallel to the plane of the sliding inclined surface 1321a. The extrusion block 1322 has a sliding protrusion 1322a on the side away from the support member 121, which is adapted to the sliding groove 1321b. The sliding protrusion 1322a is slidably disposed in the sliding groove 1321b, and the sliding protrusion 1322a cooperates with the sliding groove 1321b to limit the movement direction of the extrusion block 1322. Through the cooperation of the sliding groove 1321b and the sliding protrusion 1322a, the movement direction of the extrusion block 1322 is strictly limited to the trajectory of the sliding groove 1321b, thereby achieving precise motion control. The movement of the extrusion block 1322 on the sliding inclined plane 1321a is more stable and precise, avoiding the situation where the extrusion block 1322 does not move along the sliding inclined plane 1321a in the third direction when it resets.

[0041] In some embodiments, see Figure 2 , Figure 5 and Figure 6 The bearing mechanism 12 also includes a reset assembly 122, which includes a push rod 1221, a top plate 1222, and a second elastic member 1223. The push rod 1221 is disposed on the side of the bearing member 121 away from the pressing assembly 22, the top plate 1222 is disposed on the side of the push rod 1221 away from the bearing member 121, and the second elastic member 1223 is disposed on the side of the top plate 1222 away from the push rod 1221. The two ends of the second elastic member 1223 abut against the bottom of the lower mold base 11 and the top plate 1222, respectively. The second elastic member 1223 is used to push the top plate 1222 and the push rod 1221 to move in the first direction so that the bearing member 121 is reset. The second elastic element 1223 can be a nitrogen spring, etc. Through the combined structure of the second elastic element 1223, the top plate 1222, and the push rod 1221, a supporting force can be provided to the bearing element 121. When the holding assembly 22 holds the workpiece 200, the bearing element 121 can cooperate with the holding assembly 22 to clamp the middle part 201 of the workpiece 200, improving the stability of the workpiece 200 during bending. After bending, the second elastic element 1223 can push the top plate 1222 and the push rod 1221 to move along the first direction, thereby driving the bearing element 121 to reset, facilitating material unloading, and ensuring that the bearing element 121 returns to its initial position after each bend, preparing for the next bend.

[0042] In some embodiments, see Figure 2 , Figure 5 and Figure 6 The reset assembly 122 further includes a bending reset rod 1224, which is connected to the side of the top plate 1222 away from the second elastic member 1223. One end of the bending reset rod 1224 away from the top plate 1222 abuts against the bending assembly 131. The bending reset rod 1224 is used to move along the first direction with the top plate 1222 to reset the bending assembly 131. In this embodiment, when two bending assemblies 131 are provided, two bending reset rods 1224 are also provided. The two bending reset rods 1224 are respectively disposed opposite to the bending swing blocks 1311 of the two bending assemblies 131, and respectively abut against the lower side of the driving part 1311a of the corresponding bending swing block 1311. After bending the workpiece 200, the second elastic element 1223 drives the top plate 1222 to move the bending reset rod 1224 along the first direction. The bending reset rod 1224 pushes the corresponding drive handle to rotate around the third direction, so that the bending swing block 1311 is reset.

[0043] In some embodiments, see Figure 2 , Figure 5 and Figure 6The upper mold 20 also includes a pressure rod 23, which is connected to the side of the upper mold base 21 near the lower mold base 11. The pressure rod 23 is disposed opposite to the extrusion block 1322 and is configured to push the extrusion block 1322 toward the top plate 1222, thereby causing the extrusion block 1322 to move along the sliding inclined surface 1321a to extrude the workpiece 200. The reset assembly 122 also includes an ejector pin 1225, which is connected to the side of the top plate 1222 away from the second elastic member 1223 and abuts against the side of the extrusion block 1322 away from the pressure rod 23. The ejector pin 1225 is used to move with the top plate 1222 in a first direction to reset the extrusion block 1322. In this embodiment, if there are multiple extrusion blocks 1322, such as two or four, there are also two or four pressure rods 23, and the number and position of the pressure rods 23 are consistent with the number and position of the extrusion blocks 1322. By setting the pressure rod 23, when the upper mold 20 and the lower mold 10 are closed, the pressure rod 23 pushes the corresponding extrusion block 1322 downward. Under the guidance of the sliding inclined surface 1321a, the extrusion block 1322 moves towards the workpiece 200 in a third direction, thereby extruding the workpiece 200. The number and position of the ejector pins 1225 are also consistent with the number and position of the extrusion blocks 1322. After bending is completed, the second elastic element 1223 drives the top plate 1222 and the ejector pins 1225 to move towards the extrusion block 1322, thereby pushing the extrusion block 1322 to move in the first direction. The extrusion block 1322 moves synchronously away from the support member 121 in a third direction with the cooperation of the sliding protrusion 1322a and the sliding groove 1321b.

[0044] In some embodiments, see Figure 1 and Figure 2 The supporting mechanism 12 also includes two positioning blocks 123. Both positioning blocks 123 are connected to the lower die base 11 on the side near the upper die base 21, and are respectively positioned on both sides of the supporting member 121 along the second direction. The two positioning blocks 123 abut against both sides of the workpiece 200 along the second direction to position the workpiece 200. Through the cooperation of the two positioning blocks 123, the workpiece 200 can be accurately positioned when placed on the supporting member 121, ensuring that both sides of the workpiece 200 along the second direction are tightly fitted with the positioning blocks 123. Through the abutting action of the positioning blocks 123, the position of the workpiece 200 before bending is more accurate, reducing bending errors caused by inaccurate workpiece positioning and ensuring consistency and quality in each bending.

[0045] In some embodiments, see Figure 2 , Figure 5 and Figure 6The pressing assembly 22 includes a connector 221 and a pressing member 222. The pressing member 222 is connected to the side of the upper mold base 21 facing the lower mold base 11. The connector 221 is provided with a trapezoidal portion 2211. The upper bottom of the trapezoidal portion 2211 is provided facing the support member 121, and the lower bottom of the trapezoidal portion 2211 is provided away from the support member 121. The pressing member 222 is provided on the side of the connector 221 along the second direction and is slidably connected to the inclined surface of the trapezoidal portion 2211. When the upper mold base 21 drives the connector 221 away from the support member 121, the pressing member 222 slides along the inclined surface of the trapezoidal portion 2211, thereby causing the pressing member 222 to move away from the bending point of the workpiece 200 along the second direction. The connecting member 221 is fixedly connected to the upper mold base 21, and the holding member 222 is slidably connected to the trapezoidal part 2211. When the upper mold base 21 moves to the lower mold base 11 to close the mold, the holding member 222 abuts against the workpiece 200 and can bend the workpiece 200. When the mold is opened, the upper mold base 21 drives the connecting member 221 to move along the first direction. At this time, the holding member 222 slides relative to the trapezoidal part 2211 under the action of gravity, and then moves away from the bent end 203 of the workpiece 200 in the second direction, which facilitates the separation of the holding member 222 from the workpiece 200.

[0046] The working process of the bending device 100 provided in this embodiment is roughly as follows:

[0047] First, the workpiece 200 is placed on the carrier 121 and positioned by two positioning blocks 123. The end 203 of the workpiece 200 abuts against the non-marking component 14 of the bending mechanism 13, and the lower side of the workpiece 200 abuts against the abutting surface 1411 of the non-marking swing component 141. Then, the upper mold base 21 drives the pressing component 22 to move toward the workpiece 200 to close the mold.

[0048] During mold closing, the holding member 222 abuts against the middle 201 of the workpiece 200, and the pressure rod 23 abuts against the corresponding extrusion block 1322. The upper mold base 21 drives the holding member 222 and the pressure rod 23 to continue moving downward. The end 203 of the workpiece 200 pushes the seamless swing member 141 to rotate. At this time, the contact surface 1411 of the seamless swing member 141 is always in contact with the workpiece 200, and the end 203 of the workpiece 200 begins to bend. When the pushing surface and the bending surface 1311c of the bending swing block 1311 are on the same plane, the pushing part 1211 of the bearing member 121 abuts against the driving part 1311a of the bending swing block 1311. The bearing member 121 pushes the driving part 1311a to rotate around the first axis a, thereby driving the bending part 1311b to rotate around the first axis a. The bending part 1311b cooperates with the holding member 222 to bend the workpiece 200 until the mold closing is completed.

[0049] During the bending process, the pressure rod 23 pushes the corresponding extrusion block 1322 downward. Under the guidance of the sliding inclined surface 1321a, the extrusion block 1322 moves towards the workpiece 200 in a third direction, thereby extruding the workpiece 200. This can prevent the workpiece 200 from bulging. At the same time, the material of the workpiece 200 moves outward, which can effectively prevent cracks and other phenomena from appearing on the outside of the workpiece 200.

[0050] After bending, the upper die holder 21 moves away from the lower die holder 11 to open the mold. The upper die holder 21 drives the connecting piece 221 to move upward in the first direction. Under the action of gravity, the holding piece 222 slides relative to the trapezoidal portion 2211, and then moves away from the bent end 203 of the workpiece 200 in the second direction, which facilitates the separation of the holding piece 222 from the workpiece 200. When the holding piece 222 moves upward in the first direction, the second elastic member 1223 pushes the top plate 1222 upward. The top plate 1222 drives the ejector rod 1221, the bending reset rod 1224 and the ejector pin 1225 to move upward. The ejector rod 1221 drives the bearing member 121 to move upward, thereby ejecting the workpiece 200 out of the lower die 10. The bending reset rod 1224 pushes the driving part 1311a of the bending swing block 1311 to rotate upward, thereby driving the bending part 1311b to rotate away from the workpiece. When part 200 is in place, the first elastic element 143 pushes the reset pin 142 toward the traceless ornament 141. The reset pin 142 abuts against the bottom of the arc-shaped groove of the reset groove 1412, thereby pushing the traceless ornament 141 to rotate in the opposite direction around the second axis b to complete the reset. The ejector pin 1225 pushes the pressing block 1322 to move along the first direction. The pressing block 1322 moves synchronously away from the bearing element 121 along the third direction under the cooperation of the sliding protrusion 1322a and the sliding groove 1321b, thus completing the reset.

[0051] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A bending device, comprising a lower die and an upper die adapted for mold closing, for bending workpieces, characterized in that: The lower die includes a lower die base, a supporting mechanism, and a bending mechanism. The supporting mechanism includes a supporting member movably disposed on the lower die base along a first direction. The supporting member is configured to support the workpiece. The bending mechanism includes a bending assembly disposed near the supporting member along a second direction and an extrusion assembly disposed near the bending assembly along a third direction. The bending assembly is configured to abut against the lower end of the workpiece. The extrusion assembly includes an extrusion seat and an extrusion block. The extrusion seat is disposed on the lower die base. The extrusion seat has a sliding inclined surface disposed on the side of the bending mechanism along the third direction. The distance between the sliding inclined surface and the bending mechanism gradually increases along the first direction. The extrusion block is slidably disposed on the sliding inclined surface and is opposite to the part of the workpiece to be bent. The upper mold includes an upper mold base and a pressing assembly. The upper mold base is disposed opposite to the lower mold base, and the pressing assembly is disposed opposite to the carrier member along the first direction; wherein... The first direction, the second direction, and the third direction are perpendicular to each other. The pressing component is configured to push the workpiece and the carrier to move along the first direction. The bending mechanism is configured to bend the end of the workpiece. The upper die base pushes the extrusion block to slide along the sliding slope so that the extrusion block extrudes the part of the workpiece to be bent along the third direction.

2. The bending device as described in claim 1, characterized in that, The support member is provided with a pushing part opposite to the bending assembly; The bending assembly includes a bending swing block and a swing block positioning member. The bending swing block is rotatably connected to the lower die base about a first axis parallel to the third direction. The bending swing block includes a driving part and a bending part. The driving part is disposed near the support member and is opposite to the pushing part along the first direction. The bending part is provided with a bending surface for abutting the lower side of the end of the workpiece. The pushing part pushes the driving part away from the upper die base, so that the driving part drives the bending part to rotate about the first axis. The bending surface abuts the end of the workpiece to bend the workpiece. The swing block positioning member is disposed on the side of the bending swing block away from the upper die base along the first direction. The swing block positioning member is configured to position the bending swing block.

3. The bending device as described in claim 2, characterized in that, The bending mechanism also includes a non-marking component, which includes a non-marking ornament. The non-marking ornament is rotatably connected to the end of the bending portion away from the driving portion about a second axis parallel to the third direction. The non-marking ornament is provided with an abutment surface, which is connected to the bending surface. The abutment surface is configured to abut against the lower side of the end of the workpiece and rotates with the end of the workpiece.

4. The bending device as described in claim 3, characterized in that, The seamless ornament has a reset groove on the side away from the contact surface, the bottom of the reset groove is arc-shaped, and the bent part has a receiving hole that communicates with the reset groove. The non-marking component further includes a reset pin and a first elastic member. The reset pin is movably disposed in the receiving hole and abuts against the bottom of the reset groove. The first elastic member is disposed in the receiving hole and abuts against the end of the reset pin away from the reset groove. The first elastic member is used to push the reset pin toward the reset groove so that the reset pin pushes the non-marking pendant to rotate and reset around the second axis.

5. The bending device as described in claim 1, characterized in that, The extrusion seat has a sliding groove, which is located on the side of the sliding inclined surface away from the support member. The extension direction of the sliding groove is parallel to the plane of the sliding inclined surface. The extrusion block has a sliding protrusion that matches the sliding groove on the side away from the support member. The sliding protrusion is slidably disposed in the sliding groove and cooperates with the sliding groove to limit the movement direction of the extrusion block.

6. The bending device as described in claim 1, characterized in that, The bearing mechanism further includes a reset assembly, which includes a push rod, a top plate, and a second elastic member. The push rod is disposed on the side of the bearing member away from the pressing assembly, the top plate is disposed on the side of the push rod away from the bearing member, and the second elastic member is disposed on the side of the top plate away from the push rod. The two ends of the second elastic member abut against the bottom of the lower mold base and the top plate, respectively. The second elastic member is used to push the top plate and the push rod to move along the first direction to reset the bearing member.

7. The bending device as described in claim 6, characterized in that, The reset assembly further includes a bending reset rod, which is connected to the side of the top plate away from the second elastic member, and the end of the bending reset rod away from the top plate abuts against the bending assembly. The bending reset rod is used to move with the top plate along the first direction to reset the bending assembly.

8. The bending device as described in claim 6, characterized in that, The upper die also includes a pressure rod, which is connected to the upper die base on the side near the lower die base, and the pressure rod is disposed opposite to the extrusion block. The pressure rod is configured to push the extrusion block toward the top plate, thereby causing the extrusion block to move along the sliding inclined plane to extrude the workpiece. The reset assembly further includes a push pin, which is connected to the top plate on the side opposite to the second elastic member, and the push pin abuts against the side of the compression block opposite to the pressure rod. The push pin is used to move with the top plate in the first direction to reset the compression block.

9. The bending device as described in claim 1, characterized in that, The supporting mechanism further includes two positioning blocks, both of which are connected to the lower mold base on the side near the upper mold base, and the two positioning blocks are respectively disposed on both sides of the supporting member along the second direction. The two positioning blocks are used to abut against the two sides of the workpiece along the second direction to position the workpiece.

10. The bending device as described in claim 1, characterized in that, The pressing assembly includes a connector and a pressing member. The pressing member is connected to the side of the upper mold base facing the lower mold base. The connector is provided with a trapezoidal portion. The upper base of the trapezoidal portion faces the support member, and the lower base of the trapezoidal portion is away from the support member. The pressing member is disposed on the side of the connector along the second direction and is slidably connected to the inclined surface of the trapezoidal portion. When the upper mold base moves the connector away from the support member, the pressing member slides along the inclined surface of the trapezoidal portion, thereby causing the pressing member to move away from the bending point of the workpiece along the second direction.

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