Clamping mechanism

Abstract

The utility model relates to a clamping mechanism. The clamping mechanism comprises a base, a first clamping piece, a second clamping piece and a driving piece. The first clamping piece is installed on the base. The second clamping piece is installed on the base. The first clamping piece and the second clamping piece can move close to each other so as to clamp a rail. The driving piece is installed on the base and used for driving the first clamping piece and the second clamping piece to be close to each other or away from each other. The first clamping piece and the second clamping piece are located between the rails, the first clamping piece and the second clamping piece are driven by the driving piece to get close to each other so as to make contact with the rails, and therefore the rails are clamped, and self-locking and positioning are achieved. The first clamping piece and the second clamping piece are far away from the track and do not make contact with each other so as to avoid the track.

Description

Technical Field

[0001] The utility model relates to the field of equipment clamping auxiliary tools, in particular to a clamping mechanism. Background Art

[0002] Cross rails have a wide range of applications, such as current CNC machine tools, laser cutting machines, printing machines, and hoisting machines. In the case of cross rail positioning and opening avoidance, most of them use a split mechanism to clamp or open the guide wheel, or an integral structure, but the structure is bulky, the space requirements for the application are relatively high, or it does not have a self-locking function.

[0003] Therefore, due to the above limitations, when specific cross-track transportation functions need to be met, the existing solutions cannot meet the needs. Utility Model Content

[0004] The embodiment of the utility model provides a clamping mechanism, which is convenient for clamping, self-locking and avoiding the track. The structure occupies a small space, is convenient for installation and maintenance, and has universal applicability in working conditions.

[0005] In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

[0006] The utility model provides a clamping mechanism, which comprises a base, a first clamping member, a second clamping member and a driving member. The first clamping member is mounted on the base. The second clamping member is mounted on the base. The first clamping member and the second clamping member can move close to each other to clamp a track. The driving member is mounted on the base, and the driving member is used to drive the first clamping member and the second clamping member to move close to or away from each other.

[0007] In an embodiment of the utility model, the first clamping member and the second clamping member are located between the rails, and the driving member drives the first clamping member and the second clamping member to approach each other to contact the rails, thereby clamping the rails to achieve self-locking and positioning. When the driving member drives the first clamping member and the second clamping member to move away from each other, the first clamping member and the second clamping member are away from the rails and do not contact each other, thereby avoiding the rails.

[0008] In some embodiments, a clamping mechanism also includes a fixed seat, which is installed on the base, the end of the first clamping member close to the base is rotatably connected to the driving member, the first clamping member is rotatably connected to the fixed seat, the end of the second clamping member close to the base is rotatably connected to the driving member, and the second clamping member is rotatably connected to the fixed seat.

[0009] In some embodiments, the first clamping member includes a first clamping arm and a first cam assembly. The first clamping arm is rotatably connected to the fixed base, and one end of the first clamping arm close to the base is rotatably connected to the driving member. The first cam assembly is installed on one end of the first clamping arm away from the base. The second clamping member includes a second clamping arm and a second cam assembly. The second clamping arm is rotatably connected to the fixed base, and one end of the second clamping arm close to the base is rotatably connected to the driving member. The second cam assembly is installed on one end of the second clamping arm away from the base, and the second cam assembly is arranged opposite to the first cam assembly.

[0010] In some embodiments, the first cam assembly includes a first mounting frame and at least one first cam. The first mounting frame is mounted on an end of the first clamp arm away from the fixed base. The at least one first cam is rotatably mounted on the first mounting frame. The second cam assembly includes a second mounting frame and at least one second cam. The second mounting frame is mounted on an end of the second clamp arm away from the fixed base. The at least one second cam is rotatably mounted on the second mounting frame.

[0011] In some embodiments, the driving member includes a power device, a first connecting member and a second connecting member. The power device is mounted on the base. One end of the first connecting member is rotatably connected to one end of the first clamp arm close to the base, and the other end is rotatably connected to the output end of the power device. One end of the second connecting member is rotatably connected to one end of the second clamp arm close to the base, and the other end is rotatably connected to the output end of the power device.

[0012] In some embodiments, the driving member further comprises a closing stop plate, which is mounted on the base and sleeved outside the output end of the power device, and the vertical projection of the closing stop plate on the base at least partially overlaps with the vertical projections of the first connecting member and the second connecting member on the base.

[0013] In some embodiments, the driving member further comprises a first gasket installed between the base and the closing stop plate.

[0014] In some embodiments, a clamping mechanism further includes a first stop block and a second stop block. The first stop block is mounted on the base, and the first stop block is disposed close to the first clamp arm. The second stop block is mounted on the base, and the second stop block is disposed close to the second clamp arm.

[0015] In some embodiments, a clamping mechanism further includes a second gasket and a third gasket. The second gasket is installed between the first stop block and the base. The third gasket is installed between the second stop block and the base.

[0016] In some embodiments, a first limiting block is installed between the first stopping block and the first clamping arm, and a second limiting block is installed between the second stopping block and the second clamping arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a clamping mechanism according to an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of an assembly structure of a clamping mechanism according to an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of the first clamping arm and the second clamping arm of an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of an assembly structure of the first rotating shaft and the second rotating shaft in an embodiment of the utility model;

[0021] Figure 5 This is a structural schematic diagram of the first cam assembly of an embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of an assembly structure of the first cam and the second cam in an embodiment of the utility model;

[0023] Figure 7 This is a schematic diagram of an assembly structure of the first stop block and the second stop block of the embodiment of the utility model;

[0024] Figure 8 This is a schematic diagram of an assembly structure of the second gasket and the third gasket in an embodiment of the utility model. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. It is obvious that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. It should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, it can also be a detachable connection, or it can be connected in one piece: it can be directly connected, it can also be indirectly connected through an intermediate medium, and it can be the communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0026] The utility model provides a clamping mechanism, such as Figure 1 As shown, the clamping mechanism may include a base 1, a first clamping member 2, a second clamping member 3 and a driving member 4. The first clamping member 2 is mounted on the base 1. The second clamping member 3 is mounted on the base 1. The first clamping member 2 and the second clamping member 3 can move closer to each other to clamp the track 5. The driving member 4 is mounted on the base 1, and the driving member 4 is used to drive the first clamping member 2 and the second clamping member 3 to move closer to or away from each other. When it is necessary to clamp and position the track 5, the driving member 4 drives the first clamping member 2 and the second clamping member 3 to move closer to each other and abut against the track 5 to achieve clamping and positioning of the track 5. When it is necessary to avoid the track 5, the driving member 4 drives the first clamping member 2 and the second clamping member 3 to move away from each other and not to contact the track 5 to achieve the purpose of avoiding the track 5.

[0027] In the embodiment of the utility model, the first clamping member 2 and the second clamping member 3 are located between the rail 5, and the first clamping member 2 and the second clamping member 3 are driven by the driving member 4 to approach each other so as to contact the rail 5, thereby clamping the rail 5 to achieve self-locking and positioning. When the driving member 4 drives the first clamping member 2 and the second clamping member 3 to move away from each other, the first clamping member 2 and the second clamping member 3 are away from the rail 5 and do not contact each other, thereby avoiding the rail 5.

[0028] In some embodiments, Figure 2As shown, in order to facilitate the installation of the first clamping member 2 and the second clamping member 3 with the base 1, a clamping mechanism can also include two fixed seats 100, the two fixed seats 100 are installed on the base 1, and the two fixed seats 100 are arranged opposite to each other. In order to improve the stability of the fixed seats 100, reinforcing ribs are connected between the bottoms of the two fixed seats 100. In this way, the first clamping member 2 and the second clamping member 3 are located between the two fixed seats 100. The end of the first clamping member 2 close to the base 1 is rotatably connected to the driving member 4 through a pin. The first clamping member 2 is rotatably connected to the fixed seat 100 through the first rotating shaft 21, that is, the first clamping member 2 and the two fixed seats 100 are sleeved on the first rotating shaft 21. In this case, the first clamping member 2 rotates relative to the fixed seat 100 around the first rotating shaft 21. One end of the second clamping member 3 close to the base 1 is rotatably connected to the driving member 4 via a pin shaft, and the second clamping member 3 is rotatably connected to the fixed seat 100 via a second rotating shaft 31, that is, the second clamping member 3 and the two fixed seats 100 are mounted on the second rotating shaft 31. In this case, the second clamping member 3 rotates around the second rotating shaft 31 relative to the fixed seat 100.

[0029] Based on the above situation, in another embodiment, the first clamping member 2 and the fixing seat 100 are rotatably connected, and the second clamping member 3 and the fixing seat 100 are rotatably connected, respectively, through balls or bearings.

[0030] In some embodiments, Figure 2 As shown, in order to clamp, position and avoid the track 5, the first clamping member 2 may include a first clamping arm 22 and a first cam assembly 23. The first clamping arm 22 is rotatably connected to the fixed seat 100, and the first clamping arm 22 is located between the two fixed seats 100. The first clamping arm 22 can be rotatably connected to the two fixed seats 100 through the first rotating shaft 21. The end of the first clamping arm 22 close to the base 1 is rotatably connected to the driving member 4 through a pin. The first cam assembly 23 is installed on the end of the first clamping arm 22 away from the base 1. The second clamping member 3 may include a second clamping arm 32 and a second cam assembly 33. The second clamping arm 32 is rotatably connected to the fixed seat 100, that is, the second clamping arm 32 is located between the two fixed seats 100, and the second clamping arm 32 is rotatably connected to the two fixed seats 100 through the second rotating shaft 31. The end of the second clamping arm 32 close to the base 1 is rotatably connected to the driving member 4 through a pin. The second cam assembly 33 is installed on the end of the second clamping arm 32 away from the base 1, and the second cam assembly 33 is arranged opposite to the first cam assembly 23.

[0031] Based on the above foundation, Figure 3As shown, in order to reduce the friction between the first clamping arm 22 and the first rotating shaft 21 and reduce the friction between the second clamping arm 32 and the second rotating shaft 31, a guide sleeve 200 is installed at the rotational connection between the first rotating shaft 21 and the fixed seat 100 to improve the wear resistance between the first rotating shaft 21 and the fixed seat 100, and a guide sleeve 200 is installed at the rotational connection between the second rotating shaft 31 and the fixed seat 100 to improve the wear resistance between the second rotating shaft 31 and the fixed seat 100.

[0032] In another embodiment, if Figure 4 As shown, in order to prevent the first rotating shaft 21 and the second rotating shaft 31 from sliding out, one end of the first rotating shaft 21 and one end of the second rotating shaft 31 extend out of the fixed seat 100 and are provided with a slot 300, and the slot 300 extends in the radial direction. A rotation stop plate 400 is installed on the fixed seat 100, and corresponds to the first rotating shaft 21 and the second rotating shaft 31 one by one. A part of the rotation stop plate 400 extends into the slot 300, thereby limiting the first rotating shaft 21 and the second rotating shaft 31, thereby preventing the first rotating shaft 21 and the second rotating shaft 31 from sliding out.

[0033] Based on the above foundation, Figure 2 As shown, the first cam assembly 23 and the second cam assembly 33 are located on both sides of the track 5. When the track 5 needs to be clamped, the first clamp arm 22 and the second clamp arm 32 rotate relative to the two fixed seats 100 under the driving action of the driving member 4, and the end of the first clamp arm 22 away from the base 1 and the end of the second clamp arm 32 away from the base 1 are close to each other, so that the first cam assembly 23 and the second cam assembly 33 clamp the track 5. On the contrary, when the track 5 needs to be avoided or the track 5 does not need to be clamped, the first clamp arm 22 and the second clamp arm 32 rotate relative to the two fixed seats 100 under the driving action of the driving member 4, that is, the end of the first clamp arm 22 away from the base 1 and the end of the second clamp arm 32 away from the base 1 are away from each other, so that the first cam assembly 23 and the second cam assembly 33 are away from the track 5 and do not contact the track 5. In short, the driving member 4 drives the first clamp arm 22 and the second clamp arm 32 to expand or close, so as to drive the first cam assembly 23 and the second cam assembly 33 to approach or move away, that is, to clamp or avoid the track 5.

[0034] In some embodiments, Figure 4 and Figure 5As shown, in order to facilitate the clamping and avoidance of the track 5, the first cam assembly 23 may include a first mounting frame 210 and at least one first cam 220. The first cam 220 may be one, two, three or four. The embodiment of the utility model only takes three first cams 220 as an example for explanation, and the embodiment of the utility model is not specifically limited to this. The first mounting frame 210 is mounted on the end of the first clamp arm 22 away from the fixed seat 100. At least one first cam 220 is rotatably mounted on the first mounting frame 210. The second cam assembly 33 may include a second mounting frame 330 and at least one second cam 340. The second cam 340 may be one, two, three or four. The embodiment of the utility model only takes three second cams 340 as an example for explanation, and the embodiment of the utility model is not specifically limited to this. The second mounting frame 330 is mounted on the end of the second clamp arm 32 away from the fixed seat 100. At least one second cam 340 is rotatably mounted on the second mounting frame 330.

[0035] Based on the above foundation, Figure 6 As shown, the first cam 220 and the second cam 340 are in direct contact with the track 5 to achieve clamping, positioning or avoiding of the track 5 .

[0036] In some embodiments, Figure 6 As shown, in order to realize driving the first clamping arm 22 and the second clamping arm 32 to rotate relative to the fixed seat 100, that is, to realize the first cam 220 and the second cam 340 to move away from or approach each other. The driving member 4 may include a power device 41, a first connecting member 42 and a second connecting member 43. The power device 41 may be an electric push rod, a cylinder or an oil cylinder, etc., which is not specifically limited in the embodiment of the utility model, and is only explained by taking the cylinder as an example. The output end of the power device 41 can be telescopic relative to the base 1. The power device 41 is installed on the base 1. The first connecting member 42 and the second connecting member 43 are Y-shaped, one end of the first connecting member 42 is rotatably connected to the end of the first clamping arm 22 close to the base 1 through a pin shaft, and the other end is rotatably connected to the output end of the cylinder through a pin shaft. One end of the second connecting member 43 is rotatably connected to the end of the second clamping arm 32 close to the base 1 through a pin shaft, and the other end is rotatably connected to the output end of the cylinder through a pin shaft.

[0037] In some embodiments, Figure 6As shown, the driving member 4 may further include a closing stop plate 44. The closing stop plate 44 is mounted on the base 1 and sleeved outside the output end of the power device 41. The vertical projection of the closing stop plate 44 on the base 1 at least partially overlaps with the vertical projections of the first connecting member 42 and the second connecting member 43 on the base 1. When the output end of the cylinder is in the extended state, the first connecting member 42 and the second connecting member 43 rotate relative to the output end of the cylinder, so that the first clamping arm 22 and the second clamping arm 32 are separated from each other. When the output end of the cylinder is in the retracted state, the first connecting member 42 and the second connecting member 43 rotate relative to the output shaft of the cylinder, so that the first clamping arm 22 and the second clamping arm 32 are close to each other. When the first connecting member 42 and the second connecting member 43 abut against the closing stop plate 44, the output end of the cylinder stops retracting.

[0038] In some embodiments, the driving member 4 further includes a first gasket 45. The first gasket 45 is installed between the base 4 and the closing stop plate 44 to facilitate adjusting the height of the closing stop plate 44.

[0039] In some embodiments, Figure 7 As shown, in order to prevent the first clamping arm 22 and the second clamping arm 32 from over-rotating. A clamping mechanism may also include a first stop block 60 and a second stop block 70. The first stop block 60 is mounted on the base 1, and the first stop block 60 is arranged close to the first clamping arm 22. The second stop block 70 is mounted on the base 1, and the second stop block 70 is arranged close to the second clamping arm 32. Figure 8 As shown, when the first clamp arm 22 and the second clamp arm 32 are fully extended, the first clamp arm 22 abuts against the first stop block 60 , and the second clamp arm 32 abuts against the second stop block 70 .

[0040] In some embodiments, Figure 8 As shown, in order to facilitate the adjustment of the expansion angle of the first clamp arm 22 and the second clamp arm 32, a clamping mechanism may further include a second gasket 80 and a third gasket 90. The second gasket 80 is installed between the first stop block 60 and the base 1. The third gasket 90 is installed between the second stop block 70 and the base 1.

[0041] In some embodiments, Figure 7 As shown, in order to facilitate further adjustment of the expansion angle of the first clamping arm 22 and the second clamping arm 32 , a first limiting block 81 is installed between the first stop block 60 and the first clamping arm 22 , and a second limiting block 82 is installed between the second stop block 70 and the second clamping arm 32 .

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping mechanism, characterized in that: include: Base; A first clamping member, mounted on the base; a second clamping member mounted on the base, wherein the first clamping member and the second clamping member are movable toward each other to clamp the rail; A driving member, mounted on the base, and used to drive the first clamping member and the second clamping member to move closer to or farther from each other; A fixing seat is mounted on the base, one end of the first clamping member close to the base is rotatably connected to the driving member, the first clamping member is rotatably connected to the fixing seat, one end of the second clamping member close to the base is rotatably connected to the driving member, and the second clamping member is rotatably connected to the fixing seat; The first clamping member comprises: A first clamping arm is rotatably connected to the fixing seat, and one end of the first clamping arm close to the base is rotatably connected to the driving member; A first cam assembly is mounted on an end of the first clamping arm away from the base; The second clamping member comprises: A second clamping arm is rotatably connected to the fixing seat, and one end of the second clamping arm close to the base is rotatably connected to the driving member; The second cam assembly is installed on one end of the second clamping arm away from the base, and the second cam assembly is arranged opposite to the first cam assembly.

2. The clamping mechanism according to claim 1, characterized in that: The first cam assembly comprises: A first mounting frame, mounted on one end of the first clamping arm away from the fixing seat; at least one first cam, rotatably mounted on the first mounting frame; The second cam assembly includes: A second mounting frame, mounted on an end of the second clamping arm away from the fixing seat; At least one second cam is rotatably mounted on the second mounting bracket.

3. The clamping mechanism according to claim 1, characterized in that: The driving member comprises: A power device, mounted on the base; A first connecting member, one end of which is rotatably connected to an end of the first clamping arm close to the base, and the other end of which is rotatably connected to an output end of the power device; The second connecting member has one end rotatably connected to one end of the second clamping arm close to the base, and the other end rotatably connected to the output end of the power device.

4. The clamping mechanism according to claim 3, characterized in that: The driving member also includes: A closing stop plate is installed on the base and sleeved outside the output end of the power device. The vertical projection of the closing stop plate on the base at least partially overlaps with the vertical projections of the first connecting member and the second connecting member on the base.

5. The clamping mechanism according to claim 4, characterized in that: The driving member also includes: The first gasket is installed between the base and the closing stop plate.

6. The clamping mechanism according to claim 1, characterized in that: Also includes: A first stop block is installed on the base, and the first stop block is arranged close to the first clamping arm; The second stop block is installed on the base, and the second stop block is arranged close to the second clamping arm.

7. The clamping mechanism according to claim 6, characterized in that: Also includes: A second gasket installed between the first stop block and the base; The third gasket is installed between the second stop block and the base.

8. The clamping mechanism according to claim 6, characterized in that: A first limiting block is installed between the first stop block and the first clamping arm, and a second limiting block is installed between the second stop block and the second clamping arm.

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