Adjustable clamp for sheet metal parts

Abstract

The present invention discloses an adjustable clamp for sheet metal parts, including a positioning device for positioning a workpiece and a clamping device for fixing the workpiece, and also includes an auxiliary positioning device that can move relative to the positioning device and can cooperate with the positioning device to match sheet metal parts of different specifications. The adjustable clamp for sheet metal parts adopting the above structure has better versatility.

Description

Technical Field

[0001] The invention relates to the field of mechanical manufacturing, and in particular to an adjustable clamp for sheet metal parts. Background Art

[0002] A fixture is a tool used to fix the processing object in the process of mechanical manufacturing for processing and inspection. The general sheet metal fixture is equipped with a positioning structure for placing and positioning the sheet metal. After the positioning structure fixes the position of the processing object, the processing object is pressed by a clamping device. However, the general sheet metal fixtures are single. A pair of fixtures can only be used for one process of a sheet metal or multiple processes that can be processed at the same time. It cannot be used when sheet metal parts with different shapes and sizes and different positioning hole positions need to be processed. When a sheet metal part stops being produced, the matching fixture cannot be used. Sometimes, in order to save costs, the mechanism of the unused part of the fixture is disassembled and then replaced with a new mechanism to process different sheet metal parts. However, if this is done, the positioning mechanism, clamping mechanism and some surrounding mechanisms of the fixture need to be disassembled, which requires a lot of materials and human resources, and the disassembled parts also cause waste. Even sheet metal parts with similar shapes and sizes cannot be universal, which causes great waste, so the current sheet metal fixtures still have room for improvement.

[0003] The present invention is just produced based on the above shortcomings. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an adjustable clamp for a sheet metal part.

[0005] The present invention is achieved through the following technical solutions:

[0006] An adjustable clamp for sheet metal parts comprises a positioning device for positioning the workpiece and a clamping device for fixing the workpiece, and also comprises an auxiliary positioning device which can move relative to the positioning device and can cooperate with the positioning device to match sheet metal parts of different specifications.

[0007] The adjustable clamp for sheet metal parts as described above includes a base, to which a first support plate is fixedly connected, and the first support plate is provided with the positioning device and the clamping device. The base is also fixedly connected with a second support plate, and the second support plate is provided with the auxiliary positioning device and a moving device capable of pushing the auxiliary positioning device to move relative to the positioning device.

[0008] In the adjustable clamp for sheet metal parts as described above, the auxiliary positioning device is provided with a plurality of first mounting holes for mounting movable positioning pins.

[0009] In the adjustable clamp for sheet metal parts as described above, the positioning device includes a positioning platform and a positioning pin that can be extended and inserted into the positioning hole of the workpiece.

[0010] In the adjustable clamp for sheet metal parts as described above, the first support plate is connected to a driving mechanism for driving the positioning pin to move telescopically.

[0011] The adjustable clamp for sheet metal parts as described above, the driving mechanism includes a sliding block fixedly connected to the first support plate and capable of moving relative to the positioning device, the sliding block is provided with a second mounting hole, the lower end of the positioning pin is provided with a protrusion that can be stuck outside the second mounting hole, and the sliding block is detachably connected to a mounting block that presses the protrusion against the outer side surface of the second mounting hole to fix the positioning pin on the sliding block.

[0012] In the adjustable clamp of the sheet metal part as described above, the first support plate is fixedly connected to the first cylinder, and the output end of the first cylinder is connected to the sliding block and can push the sliding block to move relative to the positioning device.

[0013] As described above, the adjustable clamp for sheet metal parts, the moving device includes a moving seat arranged on the second support plate and capable of longitudinally moving relative to the second support plate on a horizontal plane, and the auxiliary positioning device is slidably connected to the moving seat and can slide laterally relative to the moving seat on a horizontal plane.

[0014] As described above, the adjustable clamp for sheet metal parts, the moving device also includes a second cylinder fixedly connected to the second support plate, the output end of the second cylinder is connected to the moving seat and can push the moving seat to move, the moving seat is fixedly connected to a third cylinder, the third cylinder is connected to the auxiliary positioning device and can push the auxiliary positioning device to move relative to the positioning device.

[0015] In the adjustable clamp for sheet metal parts as described above, an adjustment mechanism is provided between the positioning platform and the first support plate, which can adjust the distance between the two in the vertical direction.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The adjustable clamp for sheet metal parts described in the present invention includes a positioning device for positioning the workpiece and a clamping device for fixing the workpiece, and also includes an auxiliary positioning device that can move relative to the positioning device and can cooperate with the positioning device to match sheet metal parts of different specifications. When clamping the workpiece, the position of the workpiece is limited by the positioning device, and then the workpiece is pressed and fixed by the clamping device. When different workpieces are replaced for clamping. Due to the different positions of the positioning holes, the original positioning device may not meet the positioning requirements. At this time, the position of the auxiliary positioning device 31 can be adjusted to match the position of the positioning hole of the sheet metal part, and then the workpiece is pressed and fixed by the clamping device, so as to clamp sheet metal parts of different specifications. In this way, the same clamp can be used on sheet metal parts of different shapes and different positioning hole positions, without causing most of the clamp to be dismantled or scrapped, and without causing waste of resources.

[0018] 2. The positioning device described in the present invention includes a sliding block connected to the first support plate and capable of moving relative to the positioning device, the sliding block being provided with a detachable positioning pin, which can be conveniently disassembled when it is necessary to clamp sheet metal parts with different positioning holes. Preferably, the sliding block is provided with a second mounting hole, and the second mounting hole is penetrated by a positioning pin that can pass through the positioning platform and is used to fix the workpiece, and the lower end of the positioning pin is provided with a protrusion that can be stuck outside the second mounting hole, and the sliding block is connected to a detachable mounting block that presses the protrusion against the outer surface of the second mounting hole to fix the positioning pin on the sliding block. It only needs to disassemble the mounting block, then take out some or all of the positioning pins, and then reinstall the mounting block. In this way, sheet metal parts with different positioning hole positions can be placed on the positioning platform, and the positioning is assisted by the above-mentioned auxiliary positioning device, which is simple to operate and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional view of an adjustable clamp for a sheet metal part of the present invention;

[0020] Figure 2 is a three-dimensional diagram of a positioning device of an adjustable clamp for a sheet metal part of the present invention;

[0021] Figure 3 is a top view of the sheet metal placement location of the adjustable clamp for sheet metal of the present invention;

[0022] Figure 4 is a top view of the sheet metal placement location of the adjustable clamp for sheet metal of the present invention;

[0023] Figure 5 It is a partial view of the adjustable clamp of the sheet metal part of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] like Figure 1 As shown, an adjustable clamp for sheet metal parts includes a positioning device 21 for positioning a workpiece and a clamping device 22 for fixing the workpiece, and also includes an auxiliary positioning device 31 that can move relative to the positioning device 21 and can cooperate with the positioning device 21 to match sheet metal parts of different specifications. When clamping a workpiece, the position of the workpiece is limited by the positioning device 21, and the workpiece is pressed and fixed by the clamping device 22. When a different workpiece is replaced for clamping. Due to the different positions of the positioning holes, the original positioning device 21 may not meet the positioning requirements. At this time, the position of the auxiliary positioning device 31 can be adjusted to match the position of the positioning hole of the sheet metal part, and the workpiece is pressed and fixed by the clamping device 22, so that sheet metal parts of different specifications can be clamped. In this way, the same clamp can be used on sheet metal parts of different shapes and different positioning hole positions, without causing most of the clamp to be dismantled or scrapped, and without causing waste of resources.

[0026] like Figure 1 As shown, the adjustable clamp of the sheet metal of the present invention includes a base 1, to which a first support plate 2 is fixedly connected, and the first support plate 2 is provided with the positioning device 21 and the clamping device 22. The base 1 is also fixedly connected with a second support plate 3, and the second support plate 3 is provided with the auxiliary positioning device 31 and a moving device 32 capable of pushing the auxiliary positioning device 31 to move relative to the positioning device 21. The auxiliary positioning device 31 is pushed to move by the moving device 32 without manual pushing, which is more accurate and convenient.

[0027] like Figure 1 As shown, the auxiliary positioning device 31 is provided with a plurality of first mounting holes 311 for mounting movable positioning pins. When clamping sheet metal parts of different specifications, the movable positioning pins are installed at positions corresponding to the positioning holes of the sheet metal parts, thereby playing a positioning role.

[0028] like Figure 1 As shown, the positioning device 21 includes a positioning platform 211 and a positioning pin 212 that can be extended and inserted into the positioning hole of the workpiece, and is used to limit the position of the workpiece and clamp the workpiece in cooperation with a clamping tool.

[0029] like Figure 1 and 2 The first support plate 2 is connected to a driving mechanism 23 for driving the positioning pin 212 to telescopically move without manual pushing.

[0030] Preferably, if Figure 2As shown, the driving mechanism 23 includes a sliding block 231 fixedly connected to the first support plate (2) and capable of moving relative to the positioning device 21, the sliding block 231 is provided with a second mounting hole 2311, the lower end of the positioning pin 212 is provided with a protrusion 2121 capable of being stuck outside the second mounting hole 2311, and the sliding block 231 is detachably connected with a mounting block 232 that fixes the positioning pin 212 on the sliding block 231 by pressing the protrusion 2121 against the outer surface of the second mounting hole 2311. In this way, it is only necessary to disassemble the mounting block 232, then take out some or all of the positioning pins 212, and then reinstall the mounting block 232, so that sheet metal parts with different positioning hole positions can be placed on the positioning platform, and the positioning is assisted by the auxiliary positioning device 31, which is simple to operate and saves costs.

[0031] Different principles of sheet metal clamping: Figure 3 As shown, when clamping the sheet metal part 4a, the sheet metal part 4a is placed on the positioning platform 211, and the positioning pin 212 of the positioning device 21 includes Figure 3 212a and 212b in the positioning table 211 are inserted into the positioning hole of the sheet metal 4a, thereby positioning the sheet metal 4a, and then the workpiece is pressed by the clamping device 22 to complete the clamping; Figure 4 As shown, the positions of the positioning holes of sheet metal 4b and sheet metal 4a are different. When clamping sheet metal 4b, the positioning pin 212b matches a positioning hole of sheet metal 4b. If the shape of the sheet metal interferes with the movement of part of the positioning pin 212, it can be disassembled through the detachable structure of the driving mechanism 23 that pushes the positioning pin 212, and then the auxiliary positioning device 31 is moved until the position of the part of the first mounting hole 311 on the auxiliary positioning device 31 is aligned with the position of the positioning hole of sheet metal 4b, and then the movable positioning pin 6b is installed on the positioning hole of sheet metal 4b, so that the sheet metal 4b is positioned by the positioning pin 212b and the movable positioning pin 6b, and then the workpiece is pressed by the clamping device 23 to complete the clamping.

[0032] like Figure 2 As shown, preferably, a first cylinder 233 is fixedly connected to the first support plate 2 , and an output end of the first cylinder 233 is connected to the sliding block 231 and can push the sliding block 231 to move relative to the positioning device 21 .

[0033] like Figure 1 , 3As shown in Figures 4 and 5, the moving device 32 includes a moving seat 321 disposed on the second support plate 3 and capable of longitudinally moving relative thereto on a horizontal plane, and the auxiliary positioning device 31 is slidably connected to the moving seat 321 and capable of sliding laterally relative to the moving seat 321 on a horizontal plane. Preferably, the moving device 32 also includes a second cylinder 322 fixedly connected to the second support plate 3, the output end of the second cylinder 322 is connected to the moving seat 321 and can push the moving seat 321 to move, and a third cylinder 323 is fixedly connected to the moving seat 321, the third cylinder 323 is connected to the auxiliary positioning device 31 and can push the auxiliary positioning device 31 to move relative to the positioning device 21. In this way, the auxiliary positioning device 31 can be adjusted and the first mounting hole 311 thereon can be driven to move and adjust the position, so as to match the sheet metal parts with different positions of the mounting hole 311, and the structure is simple and the operation is convenient.

[0034] like Figure 5 As shown, preferably, an adjustment mechanism 24 capable of adjusting the distance between the positioning platform 211 and the first support plate 2 in the vertical direction is provided between the positioning platform 211 and the first support plate 2. When the two main positioning holes of the sheet metal to be clamped have a certain range of height difference, the height of the positioning device 21 in the vertical direction can be adjusted by the adjustment mechanism 24. In more detail, the adjustment mechanism 24 includes a connecting block 241 fixedly connected to the positioning platform 211, and the connecting block 241 is provided with a slotted hole 2411 extending in the vertical direction. The first support plate 2 is threadedly connected with a fixing bolt that passes through the slotted hole 2411 and connects and fixes the connecting block 241 to the first support plate 2. When different sheet metal parts need to be clamped, the positioning device 21 and the auxiliary positioning device 31 need to be adjusted. Sometimes, the adjustment mechanism 24 needs to be adjusted. The mechanism of this embodiment is convenient for disassembly and installation.

[0035] The present invention is not limited to the above-mentioned embodiments, and its form and structure can be changed in other forms. As long as the technical solutions that achieve the purpose of the present invention by basically the same means are within the protection scope of the present invention. For example, changing the shape, size, structure or number of the auxiliary positioning device and the structure, size or number of the mounting holes of the auxiliary positioning device, or changing the form and method of the mechanism activity, etc., should all be considered within the protection scope of the present invention.

Claims

1. An adjustable clamp for sheet metal parts, characterized in that: It includes a positioning device (21) for positioning a workpiece and a clamping device (22) for fixing the workpiece, and also includes an auxiliary positioning device (31) that can move relative to the positioning device (21) and can cooperate with the positioning device (21) to match sheet metal parts of different specifications; The invention comprises a base (1), a first support plate (2) being fixedly connected to the base (1), the first support plate (2) being provided with the positioning device (21) and the clamping device (22), the base (1) being also fixedly connected to a second support plate (3), the second support plate (3) being provided with the auxiliary positioning device (31) and a moving device (32) capable of pushing the auxiliary positioning device (31) to move relative to the positioning device (21); The auxiliary positioning device (31) is provided with a plurality of first mounting holes (311) for mounting movable positioning pins; The positioning device (21) comprises a positioning platform (211) and a positioning pin (212) which can be extended and inserted into a positioning hole of a workpiece; The first support plate (2) is connected to a driving mechanism (23) for driving the positioning pin (212) to telescope and move; The driving mechanism (23) comprises a sliding block (231) fixedly connected to the first support plate (2) and capable of moving relative to the positioning device (21); the sliding block (231) is provided with a second mounting hole (2311); the lower end of the positioning pin (212) is provided with a protrusion (2121) capable of being stuck outside the second mounting hole (2311); the sliding block (231) is detachably connected with a mounting block (232) for fixing the positioning pin (212) on the sliding block (231) by pressing the protrusion (2121) against the outer side of the second mounting hole (2311); The first support plate (2) is fixedly connected to a first cylinder (233), and the output end of the first cylinder (233) is connected to the sliding block (231) and is capable of pushing the sliding block (231) to move relative to the positioning device (21); The moving device (32) comprises a moving seat (321) disposed on the second support plate (3) and capable of longitudinally moving relative to the second support plate on a horizontal plane, and the auxiliary positioning device (31) is slidably connected to the moving seat (321) and capable of transversely sliding relative to the moving seat (321) on a horizontal plane; The moving device (32) further comprises a second cylinder (322) fixedly connected to the second support plate (3); an output end of the second cylinder (322) is connected to the moving seat (321) and is capable of pushing the moving seat (321) to move; a third cylinder (323) is fixedly connected to the moving seat (321); the third cylinder (323) is connected to the auxiliary positioning device (31) and is capable of pushing the auxiliary positioning device (31) to move relative to the positioning device (21); An adjustment mechanism (24) is provided between the positioning platform (211) and the first support plate (2) and is capable of adjusting the distance between the two in the vertical direction.

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