A clamping device

Abstract

The present application discloses a clamping device. A positioning member fixed on the connecting rod and a pressing member that can slide along the axial direction of the connecting rod are arranged axially on the connecting rod, an elastic member is arranged between the positioning member and the pressing member, and a first pressing bevel and a second pressing bevel are arranged on the pressing member; a first bevel and a second bevel are arranged on the crimping member; a clamping member includes a first clamping block and a second clamping block; a driving member is connected to the connecting rod, and when the connecting rod rotates, the first pressing bevel and the second pressing bevel are driven to abut against the workpiece respectively; the connecting rod moves downward axially to drive the first pressing bevel and the second pressing bevel to press down on the workpiece respectively, and the first clamping block and the second clamping block are respectively extended in the opposite direction to abut against the workpiece, so as to limit the workpiece on the limiting surface of the workbench. The clamping device provided by the present application can clamp the workpiece in multiple directions, and only one driving member is needed to cooperate with the workbench to realize multiple clamping of the workpiece, thereby improving production efficiency and reducing production costs.

Description

Technical Field

[0001] The present application relates to the technical field of workpiece clamping, and in particular to a clamping device. Background Art

[0002] In the processing of workpieces, it is generally necessary to clamp and fix the workpiece by a clamping device so that the workpiece remains stationary during the processing to ensure the accuracy of the workpiece after forming.

[0003] In the actual operation process, the workpiece often needs to be positioned in multiple directions. In the existing equipment, multiple power sources (cylinders, motors) are generally set to drive the clamping parts to clamp and limit the workpiece in multiple directions. Using multiple power sources to clamp and limit the workpiece has the disadvantages of low production efficiency and high cost. Utility Model Content

[0004] The purpose of the present application is to provide a clamping device that can clamp a workpiece in multiple positions. Only one driving member is required to cooperate with a workbench to achieve multiple-position clamping of the workpiece, thereby improving production efficiency and reducing production costs.

[0005] The present application provides a clamping device, comprising: a connecting rod, on which a positioning member fixed to the connecting rod and a pressing member that can slide along the axial direction of the connecting rod are arranged axially, an elastic member is arranged between the positioning member and the pressing member, the pressing member rotates synchronously with the connecting rod, and a first pressing inclined surface and a second pressing inclined surface are relatively arranged on the pressing member; a crimping member, which is installed on the connecting rod, and the crimping member is provided with a first inclined surface and a second inclined surface that are relatively arranged; a clamping member, which includes sliding surfaces that respectively fit the first inclined surface and the second inclined surface The first clamping block and the second clamping block are movable; a driving member, the driving member is connected to the connecting rod to drive the connecting rod to rotate and move axially, and when the connecting rod rotates, the first pressing down slope and the second pressing down slope are driven to rotate until they respectively abut against two workpieces; the connecting rod moves downward axially to drive the elastic member to press on the pressing member, so that the first pressing down slope and the second pressing down slope are respectively pressed down on the two workpieces, and the first clamping block and the second clamping block are respectively extended in reverse to abut on the workpieces, so as to limit the workpieces on the limiting surface of the workbench.

[0006] Optionally, the crimping member includes a connecting portion and a crimping portion; the connecting portion is rotatably connected to the connecting rod, the crimping portion is at least partially defined between the first clamping block and the second clamping block, and the crimping portion includes the first inclined surface and the second inclined surface arranged opposite to each other.

[0007] Optionally, the connecting portion includes a first connecting block and a second connecting block connected to each other, the first connecting block is provided with a threaded hole, the connecting rod is correspondingly provided with an external thread, and the external thread is screwed into the threaded hole; the second connecting block is clamped in the crimping hole provided on the crimping portion.

[0008] Optionally, one of the second connecting block and the crimping hole is provided with a clamping block or a clamping strip, and the other is provided with a sliding opening along the axial direction of the connecting rod, and the clamping block or the clamping strip is slidably arranged in the sliding opening.

[0009] Optionally, a first protrusion is provided on the first clamping block, and a second protrusion is provided on the second clamping block; the clamping member also includes an elastic limiting ring, which is sleeved on the first protrusion and the second protrusion, and when the first clamping block and the second clamping block are extended in reverse, the limiting ring is in a tensioned state.

[0010] Optionally, the first clamping block includes a first sliding portion and a first clamping portion connected to each other, and the second clamping block includes a second sliding portion and a second clamping portion connected to each other; the first sliding portion is provided with a first sliding surface that slides in contact with the first inclined surface, and the second sliding portion is provided with a second sliding surface that slides in contact with the second inclined surface; the first clamping portion is provided with a first clamping surface that matches the workpiece, and the second clamping portion is provided with a second clamping surface that matches the workpiece.

[0011] Optionally, the limiting surface includes a working surface for placing the workpiece and a first positioning surface and a second positioning surface that are arranged opposite to each other, wherein the first positioning surface is arranged opposite to the first clamping surface, and the second positioning surface is arranged opposite to the second clamping surface.

[0012] Optionally, a limiting member is fixedly provided on the connecting rod, and the limiting member is located on a side of the pressing member facing away from the positioning member.

[0013] Optionally, the connecting rod is provided with a polygonal portion, and the pressing member is provided with a polygonal hole matched with the polygonal portion, so that the pressing member can slide along the axial direction of the connecting rod and rotate synchronously with the connecting rod.

[0014] Optionally, the driving member is a driving cylinder.

[0015] The above technical solution has the following beneficial effects:

[0016] The clamping device provided by the present application has a first pressing bevel and a second pressing bevel of the pressing piece that rotate under the rotation of the connecting rod to respectively abut against the upper sides of the two workpieces placed on the workbench. When the connecting rod is pressed downward along the axial direction, the first pressing bevel and the second pressing bevel are driven to be pressed against the two workpieces. At the same time, the pressing downward of the connecting rod drives the crimping piece downward. The downward movement of the first bevel and the second bevel drives the first clamping block and the second clamping block to slide outward along the first bevel and the second bevel respectively and abut against the two workpieces respectively, so as to realize multi-directional clamping of the workpieces. The above process only requires a driving member that drives the connecting rod to rotate and move axially, without the need to use multiple power sources, thereby reducing costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a clamping device in one embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of the clamping device before the workpiece is clamped in one embodiment of the present application;

[0019] Figure 3 This is a schematic diagram of the structure of a clamping device after clamping a workpiece in one embodiment of the present application;

[0020] Figure 4 This is a schematic diagram of the structure of a connecting rod in one embodiment of the present application;

[0021] Figure 5 This is a schematic diagram of the structure of a lower pressing member in an embodiment of the present application;

[0022] Figure 6 This is a schematic diagram of the structure of a crimping component in an embodiment of the present application;

[0023] Figure 7 A cross-sectional view of a crimping member in one embodiment of the present application;

[0024] Figure 8 This is a schematic diagram of the structure of a clamping member in one embodiment of the present application;

[0025] Fig. 9 This is a schematic structural diagram of the first clamping portion in one embodiment of the present application;

[0026] Fig.10 This is a schematic diagram of the structure of a position limiting member in an embodiment of the present application;

[0027] Fig.11 This is a schematic diagram of the structure of an elastic member in an embodiment of the present application;

[0028] Reference Numbers

[0029] 1-connecting rod, 10-limiting piece;

[0030] 2- Positioning piece;

[0031] 3-pressing member, 30-first pressing slope, 31-second pressing slope, 32-polygonal hole;

[0032] 4-crimping part, 40-first inclined surface, 41-second inclined surface, 42-connecting part, 420-first connecting block, 421-second connecting block, 43-crimping part, 430-crimping hole;

[0033] 5-clamping member, 50-first clamping block, 500-first protrusion, 501-first sliding portion, 502-first clamping portion, 51-second clamping block, 510-second protrusion, 511-second sliding portion, 512-second clamping portion, 52-limiting ring;

[0034] 6- elastic member;

[0035] 7- driving member;

[0036] 8-working table, 80-working surface, 81-first positioning surface, 82-second positioning surface;

[0037] 9-Workpiece. DETAILED DESCRIPTION

[0038] The specific implementation of the present utility model will be further described below in conjunction with the accompanying drawings.

[0039] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a variety of structural modes and implementation modes can be replaced by those skilled in the art. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction on the technical solution of the utility model.

[0040] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0041] The present application provides a clamping device, such as Figures 1 to 3 As shown, it includes: a connecting rod 1, a crimping part 4, a clamping part 5 and a driving part 7.

[0042] Please refer to Figure 1 , Figure 4 and Figure 5The connecting rod 1 is provided with a positioning member 2 fixed on the connecting rod 1 and a pressing member 3 that can slide along the axial direction of the connecting rod 1. An elastic member 6 is provided between the positioning member 2 and the pressing member 3. The pressing member 3 rotates synchronously with the connecting rod 1. The pressing member 3 is provided with a first pressing inclined surface 30 and a second pressing inclined surface 31 opposite to each other. Figure 5 As shown, the first pressing bevel 30 and the second pressing bevel 31 are both inclined from the outer upper side of the pressing member 3 toward the inner lower side of the pressing member 3 to achieve the effect of pressing on the workpiece 9 from above.

[0043] Please refer to Figure 6 to Figure 7 The crimping member 4 is mounted on the connecting rod 1 , and is provided with a first inclined surface 40 and a second inclined surface 41 which are arranged opposite to each other.

[0044] Please refer to Figure 8 The clamping member 5 includes a first clamping block 50 and a second clamping block 51 that slide in contact with the first inclined surface 40 and the second inclined surface 41, respectively. The first clamping member 5 and the second clamping member 5 are displaced in the horizontal direction by sliding, so as to achieve the effect of extending in the horizontal direction to abut against the workpiece 9 or retracting. The first inclined surface 40 and the second inclined surface 41 can be "V"-shaped inclined surfaces or flat inclined surfaces. When the first clamping block 50 and the second clamping block 51 are correspondingly provided with V-shaped inclined surfaces, the crimping portion 43 can be effectively limited between the first clamping block 50 and the second clamping block 51.

[0045] The driving member 7 is connected to the connecting rod 1 to drive the connecting rod 1 to rotate and move axially. When the connecting rod 1 rotates, it drives the first pressing bevel 30 and the second pressing bevel 31 to rotate until they are respectively abutted against two workpieces 9; the connecting rod 1 moves downward axially to drive the elastic member 6 to press on the pressing member 3, so that the first pressing bevel 30 and the second pressing bevel 31 are respectively pressed against the workpiece 9, and the first clamping block 50 and the second clamping block 51 are respectively extended in reverse to abut against the workpiece 9 to limit the workpiece 9 on the workbench 8.

[0046] The driving member 7 in the embodiment of the present application can be a cylinder or a motor, etc., which is connected to the connecting rod 1 and drives the connecting rod 1 to rotate and move in a straight line along the axial direction through an encoding or control module. The elastic member 6 in the embodiment of the present application can be a spring, and the two ends of the spring are in contact with the positioning member 2 and the pressing member 3 respectively. The relative position of the positioning member 2 and the connecting rod 1 is fixed, and when the connecting rod 1 moves downward, the spring is in a compressed and tensioned state, thereby pressing the crimping member 4 against the workpiece 9.

[0047] In the clamping device provided by the embodiment of the present application, the first pressing bevel 30 and the second pressing bevel 31 of the pressing member 3 are rotated to respectively abut against the upper sides of the two workpieces 9 placed on the workbench 8 under the rotation of the connecting rod 1. When the connecting rod 1 is pressed downward along the axial direction, it drives the first pressing bevel 30 and the second pressing bevel 31 to be crimped on the two workpieces 9. At the same time, the pressing member 4 is driven downward by the connecting rod 1. The first bevel 40 and the second bevel 41 move downward, driving the first clamping block 50 and the second clamping block 51 to slide outward along the first bevel 40 and the second bevel 41 respectively and abut against the two workpieces 9 respectively, so as to realize multi-directional clamping of the workpieces. The above process only requires a driving member 7 that drives the connecting rod 1 to rotate and move axially, without the need to use multiple power sources, thereby reducing costs and improving production efficiency.

[0048] As an optional embodiment, the crimping member 4 includes a connecting portion 42 and a crimping portion 43; the connecting portion 42 is rotatably connected to the connecting rod 1, the crimping portion 43 is at least partially defined between the first clamping block 50 and the second clamping block 51, and the crimping portion 43 includes the first inclined surface 40 and the second inclined surface 41 arranged opposite to each other. Figure 1 , Figure 6 to Figure 7 An annular groove may be provided in the connecting portion 42, and a slider is provided on the connecting rod 1. The slider is provided in the annular groove so that the connecting rod 1 can be rotatably provided in the connecting portion 42 and drive the connecting portion 42 to be crimped on the crimping portion 43 when the connecting rod 1 is pressed down, and the first inclined surface 40 and the second inclined surface 41 on the crimping portion 43 press down the clamping member 5.

[0049] As an optional embodiment, the connecting portion 42 includes a first connecting block 420 and a second connecting block 421 connected to each other. A threaded hole 422 is provided on the first connecting block 420, and an external thread is correspondingly provided on the connecting rod 1, and the external thread is screwed into the threaded hole 422; the second connecting block 421 is clamped into a crimping hole 430 provided on the crimping portion 43. The embodiment of the present application provides a connection method between the connecting rod 1 and the connecting portion 42, and the connecting rod 1 can be rotatably arranged in the first connecting block 420 by threaded engagement. Since the first clamping block 50 and the second clamping block 51 are respectively attached to the first inclined surface 40 and the second inclined surface 41 to limit the rotation of the crimping portion 43, the crimping portion 43 can only move downward along the axial direction of the connecting rod 1 under the drive of the connecting portion 42, which is stable and reliable.

[0050] As an optional embodiment, one of the second connecting block 421 and the crimping hole 430 is provided with a clamping block or a clamping strip, and the other is provided with a sliding opening 431 along the axial direction of the connecting rod 1, and the clamping block or the clamping strip is slidably arranged in the sliding opening 431. Figure 7As shown, a sliding opening 431 is provided on the inner wall of the crimping hole 430 , and a clamping block is correspondingly provided on the second connecting block 421 . The clamping block is slidably arranged along the sliding opening 431 , so as to drive the crimping part 43 to move downward.

[0051] As an optional embodiment, the first clamping block 50 is provided with a first protrusion 500, and the second clamping block 51 is provided with a second protrusion 510; the clamping member 5 further includes an elastic limiting ring 52, which is sleeved on the first protrusion 500 and the second protrusion 510. When the first clamping block 50 and the second clamping block 51 extend in opposite directions, the limiting ring 52 is in a tensioned state. Figure 8 As shown, the limiting ring 52 can be an annular spring, which is sleeved on the first protrusion 500 and the second protrusion 510 at the same time. When the first clamping block 50 and the second clamping block 51 extend in the opposite direction, the limiting ring 52 in the tensioned state plays a reverse pulling role on the first clamping block 50 and the second clamping block 51, so as to drive the first clamping block 50 and the second clamping block 51 to retract to the original position after the connecting rod 1 moves up, and the workpiece 9 is in a free state at this time. Figure 8 As shown, first protrusions 500 are provided on both sides of the first clamping block 50, and second protrusions 510 are provided on both sides of the second clamping block 51. There are two limiting rings 52, and the two limiting rings 52 are respectively limited on the two groups of first protrusions 500 and second protrusions 510 to stably limit the first clamping block 50 and the second clamping block 51.

[0052] As an optional embodiment, the first clamping block 50 includes a first sliding portion 501 and a first clamping portion 502 connected to each other, and the second clamping block 51 includes a second sliding portion 511 and a second clamping portion 512 connected to each other; the first sliding portion 501 is provided with a first sliding surface 503 that slides in contact with the first inclined surface 40, and the second sliding portion 511 is provided with a second sliding surface 513 that slides in contact with the second inclined surface 41; the first clamping portion 502 is provided with a first clamping surface that matches the workpiece 9, and the second clamping portion 512 is provided with a second clamping surface that matches the workpiece 9. Fig. 9 As shown, the first clamping portion 502 and the second clamping portion 512 in the embodiment of the present application can both be made of brass. The hardness of brass is generally less than , which can reduce damage to the workpiece 9 when clamping the workpiece 9. The first clamping surface and the second clamping surface are at least partially in contact with the workpiece 9 to cooperate with the limiting surface on the workbench 8 to clamp the workpiece 9.

[0053] As an optional embodiment, the limiting surface of the workbench 8 includes a working surface 80 for placing the workpiece 9 and a first positioning surface 81 and a second positioning surface 82 arranged opposite to each other, wherein the first positioning surface 81 is arranged opposite to the first clamping surface to clamp the workpiece 9 therein; and the second positioning surface 82 is arranged opposite to the second clamping surface to clamp the workpiece 9 therein, stably and reliably.

[0054] As an optional embodiment, a limiting member 10 is also fixedly provided on the connecting rod 1, and the limiting member 10 is located on the side of the pressing member 3 facing away from the positioning member 2. The limiting member 10 in the embodiment of the present application serves to limit the pressing member 3, and limits the sliding distance of the pressing member 3 in the axial direction of the connecting rod 1. The limiting member 10 in the embodiment of the present application can be a limiting structure such as a nut fixed to the connecting rod 1 by screwing or welding.

[0055] As an optional embodiment, the connecting rod 1 is provided with a polygonal portion, and the pressing member 3 is provided with a polygonal hole 32 adapted to the polygonal portion, so that the pressing member 3 can slide along the axial direction of the connecting rod 1 and rotate synchronously with the connecting rod 1. Figure 5 As shown, the polygonal hole 32 can be a rectangular hole, and the polygonal hole 32 is sleeved on the polygonal part in a clearance fit manner so that when the connecting rod 1 rotates, the pressing piece 3 is driven to rotate synchronously, and when the connecting rod 1 moves downward along the axial direction, the pressing piece 3 is pressed tightly on the workpiece 9 under the action of the compressed elastic piece 6.

[0056] As an optional embodiment, the driving member 7 is a driving cylinder. The driving cylinder in the embodiment of the present application has the functions of rotation and pulling down, and is driven by a program setting or hydraulic drive to first drive the connecting rod 1 to rotate 90° during operation, and then pull the connecting rod 1 down after the connecting rod 1 rotates to the right position.

[0057] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0058] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A clamping device, characterized in that: include: A connecting rod, wherein a positioning member fixed on the connecting rod and a pressing member that can slide along the axial direction of the connecting rod are arranged on the connecting rod, an elastic member is arranged between the positioning member and the pressing member, the pressing member rotates synchronously with the connecting rod, and a first pressing inclined surface and a second pressing inclined surface are arranged on the pressing member in opposite directions; A crimping piece, the crimping piece is mounted on the connecting rod, and the crimping piece is provided with a first inclined surface and a second inclined surface which are arranged opposite to each other; A clamping member, the clamping member comprising a first clamping block and a second clamping block respectively slidingly fitting with the first inclined surface and the second inclined surface; A driving member, which is drivably connected to the connecting rod to drive the connecting rod to rotate and move axially. When the connecting rod rotates, it drives the first pressing bevel and the second pressing bevel to rotate until they respectively abut against two workpieces; the connecting rod moves downward axially to drive the elastic member to press on the pressing member, so that the first pressing bevel and the second pressing bevel are pressed down on the two workpieces respectively, and the first clamping block and the second clamping block are respectively extended in reverse to abut against the workpieces to limit the workpieces on the limiting surface of the workbench.

2. The clamping device according to claim 1, characterized in that The crimping piece includes a connecting portion and a crimping portion; The connecting portion is rotatably connected to the connecting rod, the crimping portion is at least partially defined between the first clamping block and the second clamping block, and the crimping portion includes the first inclined surface and the second inclined surface that are arranged opposite to each other.

3. The clamping device according to claim 2, characterized in that: The connecting portion comprises a first connecting block and a second connecting block connected to each other, the first connecting block is provided with a threaded hole, the connecting rod is correspondingly provided with an external thread, and the external thread is screwed into the threaded hole; The second connecting block is clamped in a crimping hole provided on the crimping portion.

4. The clamping device according to claim 3, characterized in that: One of the second connecting block and the crimping hole is provided with a clamping block or a clamping strip, and the other is provided with a sliding opening along the axial direction of the connecting rod, and the clamping block or the clamping strip is slidably arranged in the sliding opening.

5. The clamping device according to claim 1, characterized in that: The first clamping block is provided with a first protrusion, and the second clamping block is provided with a second protrusion; The clamping member further comprises an elastic limiting ring, which is sleeved on the first protrusion and the second protrusion. When the first clamping block and the second clamping block extend in opposite directions, the limiting ring is in a tensioned state.

6. The clamping device according to claim 1, characterized in that: The first clamping block includes a first sliding portion and a first clamping portion connected to each other, and the second clamping block includes a second sliding portion and a second clamping portion connected to each other; The first sliding portion is provided with a first sliding surface that is in contact with and slides on the first inclined surface, and the second sliding portion is provided with a second sliding surface that is in contact with and slides on the second inclined surface; The first clamping portion is provided with a first clamping surface adapted to the workpiece, and the second clamping portion is provided with a second clamping surface adapted to the workpiece.

7. The clamping device according to claim 6, characterized in that The limiting surface includes a working surface for placing a workpiece and a first positioning surface and a second positioning surface that are arranged opposite to each other. The first positioning surface is arranged opposite to the first clamping surface, and the second positioning surface is arranged opposite to the second clamping surface.

8. The clamping device according to any one of claims 1 to 7, characterized in that: A limiting member is also fixedly arranged on the connecting rod, and the limiting member is located on a side of the pressing member facing away from the positioning member.

9. The clamping device according to any one of claims 1 to 7, characterized in that: The connecting rod is provided with a polygonal portion, and the pressing member is provided with a polygonal hole matched with the polygonal portion, so that the pressing member can slide along the axial direction of the connecting rod and rotate synchronously with the connecting rod.

10. The clamping device according to any one of claims 1 to 7, characterized in that: The driving member is a driving cylinder.

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