One-time negative angle bending hardware die

Abstract

The utility model relates to the technical field of hardware dies, in particular to a disposable negative angle bending hardware die which comprises a base, a supporting rod is fixedly connected to the top face of the base, a top plate is fixedly connected to the top of the supporting rod, and an air cylinder is fixedly connected to the top face of the top plate. The negative angle forming device has the advantages that the two bending rollers can be driven to rotate until a workpiece moves into the negative angle forming groove, the bottom surface of the negative angle forming groove is parallel to the bottom surface of the groove at the moment, negative angle forming can be carried out on the workpiece through extrusion of the bending rollers and the bending blocks at the moment, negative angle forming operation can be completed at a time, and the working efficiency is improved. And the bending roller can be conveniently reset through the tension spring, when the bending roller needs to be disassembled and maintained, the assembling plate can be disassembled, limiting of the limiting wheel on the bending roller can be relieved, then the tension spring is disassembled from the connecting pin, finally, a worker can rapidly pull out the bending roller from the interior of the embedding groove, and rapid disassembly of the bending roller can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware moulds, in particular to a one-time negative angle bending hardware mould. Background Art

[0002] Metal mold bending is a metal processing technology that refers to bending metal sheets into parts of the desired shape through a mold. During the metal mold bending process, the metal sheet is punched, sheared and bent by the mold to form parts of the desired shape.

[0003] One-time negative angle bending is a metal processing technology, which refers to the situation in which the metal sheet is bent into the desired shape through one operation during the bending process, and the bending angle is less than 90 degrees. The one-time negative angle bending hardware mold can greatly improve the bending efficiency of hardware, but the one-time negative angle bending mold still has the following shortcomings. When in use, the molding base of the mold needs to be rotated repeatedly many times, and wear and tear will inevitably occur. As the number of bending times increases, the wear gradually increases, and the accuracy will also decrease. Therefore, it is necessary to lift up the molding base for disassembly and maintenance, but disassembly will be more troublesome, so a one-time negative angle bending hardware mold is needed to solve the above problems. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] To this end, one purpose of the utility model is to provide a one-time negative angle bending hardware mold to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides a disposable negative angle bending hardware mold, including a base, the top surface of the base is fixedly connected to a support rod, the top of the support rod is fixedly connected to a top plate, the top surface of the top plate is fixedly connected to a cylinder, the output end of the cylinder is fixedly connected to a bending block, the top surface of the base is fixedly connected to a forming table, the top surface of the forming table is provided with a groove, the groove corresponds to the bending block, the inside of the forming table is provided with two embedding grooves, the inner walls of the two embedding grooves are rotatably connected to bending rollers, the two bending rollers are symmetrically distributed on both sides of the bending block, one side of the forming table is fixedly installed with an assembly plate by bolts, the inner side of the assembly plate is rotatably connected to a limiting wheel, and the limiting wheel is slidably connected to the bending roller.

[0007] It is preferred that the top surface of the forming table is fixedly connected with two positioning plates, and the two positioning plates are symmetrically distributed on both sides of the bending block. The forming table and the same side of the bending roller are fixedly connected with a connecting pin, and a tension spring is arranged between the two connecting pins. A negative angle forming groove is provided on one side of the bending roller, and the inclination angle of the negative angle forming groove is equal to that of the bending block. The technical effect that can be achieved by adopting the above technical scheme is: when it is necessary to perform negative angle bending operation on the sheet metal part, the sheet metal part can be placed between the two positioning plates, and then the cylinder is turned on to drive the bending block to move downward, the sheet metal part can be squeezed, and preliminary bending can be performed through the groove until the workpiece moves into the negative angle forming groove, which will drive the two bending rollers to rotate, and at this time, the bottom surface of the negative angle forming groove will be parallel to the bottom surface of the groove, and at this time, the workpiece can be negatively formed by squeezing the bending roller and the bending block, and the negative angle forming operation can be completed at one time, and the tension spring facilitates the resetting of the bending roller.

[0008] Preferably, any of the above schemes is that the inner wall of the groove is provided with an arc groove, the inner wall of the arc groove is fixedly connected with an arc guide rod, the outer surface of the arc guide rod is slidably connected with an arc plate, the inner side of the arc plate is fixedly connected with a clamping plate, the outer surface of the bending roller is provided with a clamping groove, and the clamping plate is slidably connected to the bending roller through the clamping groove. A rotating shaft is fixedly connected to one side of the bending roller, a rotating hole is provided on one side of the forming table, and the rotating shaft is rotatably connected to the forming table through the rotating hole. The technical effect that can be achieved by adopting the above technical scheme is that when the bending roller needs to be disassembled and maintained, the assembly plate can be disassembled, the limit of the bending roller by the limit wheel can be released, and then the tension spring can be removed from the connecting pin, and finally the bending roller can be quickly pulled out from the embedded groove, so that the bending roller can be quickly disassembled.

[0009] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0010] When it is necessary to perform negative angle bending on sheet metal parts, the sheet metal parts can be placed between the two positioning plates, and then the cylinder can be turned on to drive the bending block to move downward, so that the sheet metal parts can be squeezed and preliminary bending can be performed through the groove until the workpiece moves into the negative angle forming groove, which will drive the two bending rollers to rotate. At this time, the bottom surface of the negative angle forming groove will be parallel to the bottom surface of the groove. At this time, the workpiece can be negatively formed by squeezing the bending roller and the bending block, and the negative angle forming operation can be completed at one time. In addition, the tension spring facilitates the resetting of the bending roller. When the bending roller needs to be disassembled and maintained, the assembly plate can be disassembled, the limit of the limiting wheel on the bending roller can be released, and then the tension spring can be removed from the connecting pin. Finally, the bending roller can be quickly pulled out from the embedded groove, so that the bending roller can be quickly disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the first state of the assembly of the utility model;

[0012] Figure 2 It is a schematic diagram of the second state structure of the assembly of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the forming table of the utility model from a first perspective;

[0014] Figure 4 This is a schematic structural diagram of the forming table of the utility model from a second viewing angle;

[0015] Figure 5 It is a structural schematic diagram of the bending roller of the utility model.

[0016] In the figure: 1-base, 2-support rod, 3-top plate, 4-cylinder, 5-bending block, 6-forming table, 7-groove, 8-embedded groove, 9-bending roller, 10-assembly plate, 11-limiting wheel, 12-positioning plate, 13-connecting pin, 14-tension spring, 15-negative angle forming groove, 16-arc groove, 17-arc guide rod, 18-arc plate, 19-clip plate, 20-clip groove, 21-rotation axis, 22-rotation hole. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following.

[0018] like Figures 1 to 5 As shown, a disposable negative angle bending hardware mold includes a base 1, the top surface of the base 1 is fixedly connected to a support rod 2, the top of the support rod 2 is fixedly connected to a top plate 3, the top surface of the top plate 3 is fixedly connected to a cylinder 4, the output end of the cylinder 4 is fixedly connected to a bending block 5, the top surface of the base 1 is fixedly connected to a forming table 6, the top surface of the forming table 6 is provided with a groove 7, the groove 7 corresponds to the bending block 5, the inside of the forming table 6 is provided with two embedded grooves 8, the inner walls of the two embedded grooves 8 are rotatably connected to bending rollers 9, the two bending rollers 9 are symmetrically distributed on both sides of the bending block 5, one side of the forming table 6 is fixedly installed with an assembly plate 10 by bolts, the inner side of the assembly plate 10 is rotatably connected to a limiting wheel 11, and the limiting wheel 11 is slidably connected to the bending roller 9.

[0019] As an optional technical solution of the utility model, the top surface of the forming table 6 is fixedly connected with two positioning plates 12, and the two positioning plates 12 are symmetrically distributed on both sides of the bending block 5. The forming table 6 and the same side of the bending roller 9 are fixedly connected with a connecting pin 13, and a tension spring 14 is arranged between the two connecting pins 13. A negative angle forming groove 15 is provided on one side of the bending roller 9, and the inclination angle of the negative angle forming groove 15 is equal to that of the bending block 5. When the sheet metal needs to be bent at a negative angle, the sheet metal can be placed between the two positioning plates 12, and then the cylinder 4 is turned on to drive the bending block 5 to move downward, so that the sheet metal can be squeezed, and preliminary bending can be performed through the groove 7 until the workpiece moves into the negative angle forming groove 15, which will drive the two bending rollers 9 to rotate. At this time, the bottom surface of the negative angle forming groove 15 will be parallel to the bottom surface of the groove 7. At this time, the workpiece can be negatively formed by squeezing the bending roller 9 and the bending block 5.

[0020] As an optional technical solution of the utility model, an arc groove 16 is provided on the inner wall of the groove 7, an arc guide rod 17 is fixedly connected to the inner wall of the arc groove 16, an arc plate 18 is slidably connected to the outer surface of the arc guide rod 17, a clamping plate 19 is fixedly connected to the inner side of the arc plate 18, a clamping groove 20 is provided on the outer surface of the bending roller 9, and the clamping plate 19 is slidably connected to the bending roller 9 through the clamping groove 20. A rotating shaft 21 is fixedly connected to one side of the bending roller 9, a rotating hole 22 is provided on one side of the forming table 6, and the rotating shaft 21 is rotatably connected to the forming table 6 through the rotating hole 22. When the bending roller 9 needs to be disassembled for maintenance, the assembly plate 10 can be disassembled, the limiting wheel 11 on the bending roller 9 can be released, and then the tension spring 14 can be removed from the connecting pin 13, and finally the bending roller 9 can be quickly pulled out from the inside of the embedded groove 8.

[0021] A one-time negative angle bending hardware mold, the working principle is as follows:

[0022] 1): When it is necessary to perform negative angle bending on a sheet metal part, the sheet metal part can be placed between the two positioning plates 12, and then the cylinder 4 is turned on to drive the bending block 5 to move downward, so that the sheet metal part can be squeezed, and preliminary bending can be performed through the groove 7 until the workpiece moves into the negative angle forming groove 15, which will drive the two bending rollers 9 to rotate. At this time, the bottom surface of the negative angle forming groove 15 will be parallel to the bottom surface of the groove 7. At this time, the workpiece can be negatively formed by squeezing the bending rollers 9 and the bending block 5.

[0023] 2): When the bending roller 9 needs to be disassembled for maintenance, the assembly plate 10 can be disassembled, the limiting effect of the limiting wheel 11 on the bending roller 9 can be released, and then the tension spring 14 can be removed from the connecting pin 13, and finally the bending roller 9 can be quickly pulled out from the embedded groove 8.

[0024] To sum up, when it is necessary to perform negative angle bending on a sheet metal part, the sheet metal part can be placed between the two positioning plates 12, and then the cylinder 4 is turned on to drive the bending block 5 to move downward, so that the sheet metal part can be extruded, and preliminary bending can be performed through the groove 7 until the workpiece moves into the negative angle forming groove 15, which will drive the two bending rollers 9 to rotate. At this time, the bottom surface of the negative angle forming groove 15 will be parallel to the bottom surface of the groove 7. At this time, the workpiece can be negatively formed at an angle through the extrusion of the bending roller 9 and the bending block 5, and the negative angle forming operation can be completed at one time. In addition, the tension spring 12 facilitates the resetting of the bending roller 9. When it is necessary to disassemble and maintain the bending roller 9, the assembly plate 10 can be disassembled, the limit of the bending roller 9 by the limiting wheel 11 can be released, and then the tension spring 14 can be removed from the connecting pin 13. Finally, the bending roller 9 can be quickly pulled out from the embedded groove 8, so that the bending roller 9 can be quickly disassembled.

Claims

1. A one-time negative angle bending metal mold, characterized by: The invention comprises a base (1), the top surface of the base (1) is fixedly connected to a support rod (2), the top of the support rod (2) is fixedly connected to a top plate (3), the top surface of the top plate (3) is fixedly connected to a cylinder (4), the output end of the cylinder (4) is fixedly connected to a bending block (5), the top surface of the base (1) is fixedly connected to a forming table (6), the top surface of the forming table (6) is provided with a groove (7), the groove (7) corresponds to the bending block (5), the inside of the forming table (6) is provided with two embedding grooves (8), the inner walls of the two embedding grooves (8) are rotatably connected to bending rollers (9), the two bending rollers (9) are symmetrically distributed on both sides of the bending block (5), one side of the forming table (6) is fixedly installed with an assembly plate (10) by bolts, the inner side of the assembly plate (10) is rotatably connected to a limiting wheel (11), and the limiting wheel (11) is slidably connected to the bending roller (9).

2. A one-time negative angle bending metal mold according to claim 1, characterized in that: Two positioning plates (12) are fixedly connected to the top surface of the forming table (6), and the two positioning plates (12) are symmetrically distributed on both sides of the bending block (5).

3. A one-time negative angle bending metal mold according to claim 2, characterized in that: A connecting pin (13) is fixedly connected to the same side of the forming table (6) and the bending roller (9), and a tension spring (14) is arranged between the two connecting pins (13).

4. A one-time negative angle bending metal mold according to claim 3, characterized in that: A negative angle forming groove (15) is provided on one side of the bending roller (9), and the negative angle forming groove (15) and the bending block (5) have the same inclination angle.

5. A one-time negative angle bending metal mold according to claim 4, characterized in that: The inner wall of the groove (7) is provided with an arc groove (16), the inner wall of the arc groove (16) is fixedly connected with an arc guide rod (17), the outer surface of the arc guide rod (17) is slidably connected with an arc plate (18), the inner side of the arc plate (18) is fixedly connected with a clamping plate (19), the outer surface of the bending roller (9) is provided with a clamping groove (20), and the clamping plate (19) is slidably connected with the bending roller (9) via the clamping groove (20).

6. A one-time negative angle bending metal mold according to claim 5, characterized in that: A rotating shaft (21) is fixedly connected to one side of the bending roller (9), a rotating hole (22) is provided on one side of the forming table (6), and the rotating shaft (21) is rotatably connected to the forming table (6) via the rotating hole (22).

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