Connecting rod mechanism for clamp and clamp

Abstract

The clamp comprises an air cylinder, a push rod, a clamping mechanism and a supporting mechanism used for providing supporting, and the connecting rod mechanism comprises two parallel connecting rods, a first sliding assembly and a second sliding assembly; the two connecting rods are hinged to the supporting mechanism. The two ends of the two connecting rods are connected through a first sliding assembly and a second sliding assembly correspondingly. The cylinder is vertically arranged, and a piston rod of the cylinder is connected with the first sliding assembly; one end of the push rod is connected with the second sliding assembly, and the other end of the push rod is connected with the clamping mechanism; when the piston rod moves downwards or upwards in the vertical direction, the first sliding assembly and the second sliding assembly are driven to slide in the length direction of the connecting rod, the push rod is driven to move upwards or downwards in the vertical direction, and therefore the clamping mechanism clamps or loosens the workpiece. The piston rod of the air cylinder is connected with the second sliding assembly in a rigid connection mode, so that the piston rod can be prevented from moving, and the requirement for centering of the air cylinder is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a connecting rod mechanism for clamps and the clamp. Background Art

[0002] Modern mechanical processing and measuring equipment widely use clamps with cylinders as actuators. However, since the cylinder uses compressed air as the working medium, and compressed air has great compressibility, the piston rod of the cylinder is easy to move when it is subjected to external force during operation, thus affecting the working stability of the clamp.

[0003] The locking cylinder is based on a common double-acting cylinder, and a locking device is added to its end to keep the piston rod locked in different positions and states, that is, the piston rod is locked and cannot move freely, which can effectively prevent the piston rod from being moved by external forces due to the instability of compressed air, and effectively improve the stability of the fixture clamping the workpiece. For example, a self-locking connecting rod mechanism for a clamp and a clamp having the connecting rod mechanism provided by the authorization announcement number CN202062322U, the cylinder is arranged directly above the workpiece, and the piston rod of the cylinder is directly connected to the connecting rod mechanism. Specifically, the connecting rod mechanism includes a first connecting rod hinged to the piston rod, a second connecting rod fixedly connected to the claw, and a third connecting rod hinged to the first connecting rod and the second connecting rod at both ends. Furthermore, the cylinder can use a locking cylinder to further ensure the stability of the clamp. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a connecting rod mechanism for a clamp and a clamp, so as to solve the problem of high requirement on the neutrality of the cylinder in the prior art.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows: in the first aspect, the embodiment of the present application provides a connecting rod mechanism for a clamp, the clamp further includes a cylinder, a push rod, a clamping mechanism and a supporting mechanism for providing support, the connecting rod mechanism includes two connecting rods parallel to each other, a first sliding assembly and a second sliding assembly;

[0006] The two connecting rods are hinged to the supporting mechanism;

[0007] The two ends of the two connecting rods are connected by the first sliding assembly and the second sliding assembly respectively;

[0008] The cylinder is arranged vertically, and the piston rod of the cylinder is connected to the first sliding assembly;

[0009] The push rod is vertically arranged, and one end is connected to the second sliding assembly, and the other end is connected to the clamping mechanism;

[0010] When the piston rod moves downward or upward in the vertical direction, it drives the first sliding assembly and the second sliding assembly to slide along the length direction of the connecting rod, and drives the push rod to move upward or downward in the vertical direction, so that the clamping mechanism clamps or releases the workpiece.

[0011] In one or some optional implementations of the embodiment of the present application, both ends of the two connecting rods are respectively provided with a first sliding hole and a second sliding hole along the length direction thereof;

[0012] The first sliding assembly includes a first sliding rod and first sliders at both ends of the first sliding rod, the first sliding rod is rotatably connected to the first slider, the first slider is slidably disposed in the first sliding hole, and the first sliding rod is connected to the piston rod;

[0013] The second sliding assembly includes a second sliding rod and second sliders at both ends of the second sliding rod, the second sliding rod is rotatably connected to the second slider, the second slider is slidably disposed in the second sliding hole, and the second sliding rod is connected to the push rod.

[0014] In a second aspect, an embodiment of the present application provides a clamp, comprising a cylinder, a clamping mechanism, a supporting mechanism, and the connecting rod mechanism described in the first aspect.

[0015] In one or some optional implementations of the embodiment of the present application, the clamping mechanism includes a connecting disk connected to the push rod, a plurality of connecting components and a plurality of clamping parts;

[0016] The connecting disk is connected to the push rod, the plurality of clamping portions are arranged along the circumference of the connecting disk, and each of the clamping portions is hinged to the connecting disk through the connecting component.

[0017] In one or some optional implementations of the embodiment of the present application, the clamping portion includes a clamp base and a clamping claw connected to each other;

[0018] The connecting assembly includes a first hinge rod, a second hinge rod and a connecting rod;

[0019] One end of the first hinged rod is hinged to the connecting plate;

[0020] The second hinged rod is hinged to the other end of the first hinged rod;

[0021] Two ends of the connecting rod are respectively hinged to the second hinge rod and the clamp base.

[0022] In one or some optional implementations of the embodiment of the present application, the support mechanism includes a clamp body, a first mounting frame, and a second mounting frame connected in sequence;

[0023] The first mounting frame is arranged horizontally;

[0024] The second mounting frame is vertically arranged and hinged to the connecting rod;

[0025] The clamp body is slidably connected to the connection disk, wherein the push rod passes through the first mounting frame and the clamp body is connected to the connection disk.

[0026] In one or some optional implementations of the embodiment of the present application, the cylinder is a locking cylinder;

[0027] The locking cylinder is fixedly connected to the second mounting frame;

[0028] The piston rod of the locking cylinder is connected to the first sliding assembly.

[0029] In one or some optional implementations of the embodiment of the present application, it further includes a bearing seat sleeved outside the push rod, and the bearing seat is connected to the second sliding assembly;

[0030] The clamp comprises a rotating shaft and a rotating driving mechanism connected to the rotating shaft;

[0031] The rotating shaft sleeve is arranged outside the push rod, and is used to drive the rotating shaft to rotate under the action of the rotation driving mechanism, and drive the push rod to rotate.

[0032] In one or some optional implementations of the embodiment of the present application, the rotation drive mechanism includes a motor assembly, a cross shaft assembly and a gear rotation assembly;

[0033] The motor assembly is arranged above the second mounting frame, and comprises a fixed support and a motor connected to the fixed support;

[0034] The fixed support is connected to the second mounting frame;

[0035] The cross shaft assembly is arranged in the second mounting frame, one end of which is connected to the output shaft of the motor and the other end of which is meshed with the gear rotating assembly;

[0036] The gear rotating assembly is meshed with the rotating shaft.

[0037] In one or some optional implementations of the embodiment of the present application, a vertically arranged positioning guide column is further included;

[0038] One end of the positioning guide column is slidably connected to the second sliding assembly, and the other end is connected to the first mounting frame.

[0039] The beneficial effects of the above technical solution provided by the embodiment of the present application include at least:

[0040] The embodiment of the present application provides a connecting rod mechanism and a clamp for a clamp, which connects the piston rod of the cylinder with the second sliding assembly in a rigid connection manner. Compared with the hinge in the prior art, the piston rod can be prevented from moving and the requirements for the neutrality of the cylinder can be reduced. In addition, the piston rod is rigidly connected to the second sliding assembly, and the bearing capacity is improved, so that the piston rod can withstand a larger radial force and is not prone to failure.

[0041] At the same time, since the cylinder is arranged at one end of the connecting rod, compared with the prior art, the position of the cylinder is changed, and the cylinder is not arranged directly above the workpiece, which can prevent weak corrosive media such as water vapor in the workpiece and volatile chemical corrosive media from damaging the cylinder and ensure its normal service life.

[0042] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.

[0043] The technical solution of the present application is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0045] Figure 1 A three-dimensional diagram of a clamp provided in an embodiment of the present application;

[0046] Figure 2 A cross-sectional view of a clamp provided in an embodiment of the present application;

[0047] Figure 3 A schematic diagram of the structure of the connecting rod mechanism provided in the embodiment of the present application;

[0048] Figure 4 A schematic diagram of the structure of the clamping mechanism provided in an embodiment of the present application;

[0049] Figure 5 A schematic diagram of the connecting rod mechanism when the clamping structure provided in the embodiment of the present application is not working;

[0050] Figure 6 A schematic diagram of the movement of the connecting rod mechanism during the clamping process of the clamping structure provided in an embodiment of the present application;

[0051] Figure 7 A schematic diagram of the movement of the connecting rod mechanism during the release process of the clamping structure provided in the embodiment of the present application;

[0052] Figure 8 Another schematic diagram of the movement of the connecting rod mechanism during the release process of the clamping structure provided in the embodiment of the present application;

[0053] Description of reference numerals:

[0054] 1. Connecting rod mechanism; 11. Connecting rod; 12. First sliding assembly; 121. First sliding rod; 122. First slider; 13. Second sliding assembly; 131. Second sliding rod; 132. Second slider; 14. First sliding hole; 15. Second sliding hole; 16. Articulated portion; 17. Positioning guide column; 2. Clamping mechanism; 21. Connecting plate; 22. First hinged rod; 23. Second hinged rod; 24. Connecting rod; 25. Clamp base; 26. Clamping claw; 3. Push rod; 4. Cylinder; 41. Piston rod; 5. Support mechanism; 51. Clamp body; 52. First mounting frame; 53. Second mounting frame; 6. Rotating shaft; 7. Motor assembly; 71. Fixed support; 72. Motor; 8. Cross shaft assembly; 9. Gear rotating assembly; 10. Bearing seat. DETAILED DESCRIPTION

[0055] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0056] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0057] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0058] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0059] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0060] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0061] It should be understood that the size of the serial numbers of the steps in the following embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0062] In order to illustrate the technical solution of the present application, a specific embodiment is provided below for illustration.

[0063] The inventor found that in CN202062322U, since the piston rod of the cylinder is long, the piston rod is easy to move when the workpiece is running, and the long-term use of the fixture has higher requirements for the centering of the cylinder. At the same time, since the piston rod is hinged to the first connecting rod of the connecting rod mechanism, and the first connecting rod, the second connecting rod and the third connecting rod of the connecting rod mechanism are all hinged, not rigidly connected, the bearing capacity is limited. When the piston rod is subjected to excessive radial force, it is easy to cause piston rod failure. In addition, since the cylinder is located directly above the workpiece, when the workpiece contains weakly corrosive media such as water vapor and volatile chemically corrosive media, the cylinder is easily corroded and damaged by these media, thereby affecting normal operation.

[0064] Based on this, in order to solve the above problems, the inventors have made this application after further research and development, providing a connecting rod mechanism and a clamp for a clamp, which are described in detail through specific embodiments below.

[0065] See also Figure 1-Figure 4, this embodiment provides a connecting rod mechanism and a clamp for a clamp, the clamp includes a cylinder 4, a clamping mechanism 2, a connecting rod mechanism 1 and a support mechanism 5 for providing support. The connecting rod mechanism 1 includes two parallel connecting rods 11, a push rod 3, a first sliding assembly 12 and a second sliding assembly 13. Specifically, the two connecting rods 11 are hinged to the support mechanism 5 through a hinge 16. To ensure the stability of the movement of the connecting rods 11, the hinge 16 is preferably arranged in the middle of the connecting rods 11, and the two ends of the two connecting rods 11 are connected by the first sliding assembly 12 and the second sliding assembly 13 respectively. The cylinder 4 and the push rod 3 are both arranged vertically, the piston rod 41 of the cylinder 4 is connected to the first sliding assembly 12, one end of the push rod 3 is connected to the second sliding assembly 13, and the other end of the push rod 3 is connected to the clamping mechanism 2.

[0066] See also Figure 3 and Figure 5 , each connecting rod 11 has a first sliding hole 14 and a second sliding hole 15 at both ends thereof correspondingly arranged along the length direction thereof. The first sliding assembly 12 comprises a first sliding rod 121 and two first sliding blocks 122 respectively arranged at both ends of the first sliding rod 121 and rotatably connected thereto, wherein the first sliding block 122 is slidably arranged in the first sliding hole 14, and the first sliding rod 121 is connected to the piston rod 41. The second sliding assembly 13 comprises a second sliding rod 131 and two second sliding blocks 132 respectively arranged at both ends of the second sliding rod 131 and rotatably connected thereto, wherein the second sliding block 132 is slidably arranged in the second sliding hole 15, and the second sliding rod 131 is connected to the push rod 3.

[0067] When using, refer to Figure 5 , which is a schematic diagram of the position of the connecting rod mechanism 1 when the clamping mechanism (not shown in the figure) is not working. When the workpiece (not shown in the figure) needs to be clamped, refer to Figure 6 The cylinder 4 (not shown in the figure) drives the piston rod 41 to move downward in the vertical direction, the connecting rod 11 rotates clockwise around the hinge 16, the first slider 122 slides to the right in the first slide hole 14, and the second slider 132 slides to the left in the second slide hole 15, driving the push rod 3 to move upward in the vertical direction, and the clamping mechanism is lifted until the workpiece is clamped.

[0068] When you need to loosen the workpiece, refer to Figure 7 The cylinder 4 continuously drives the piston rod 41 to move up in the vertical direction, and the connecting rod 11 is Figure 6 The position shown is gradually rotated counterclockwise around the hinge 16 to Figure 7 In the process, the first slide block 122 slides to the left in the first slide hole 14, and the second slide block 132 slides to the right in the second slide hole 15, driving the push rod 3 to continue to move downward in the vertical direction, and the clamping mechanism 2 is continuously lowered and gradually releases the workpiece. Then, the connecting rod 11 continues to rotate counterclockwise around the hinge 16, and is rotated by Figure 7 The position shown is gradually rotated to Figure 8 In the position shown, during this process, the first slider 122 slides to the right in the first slide hole 14, and the second slider 132 slides to the left in the second slide hole 15, and drives the push rod 3 to continue to move downward in the vertical direction, and the clamping mechanism 2 is continuously lowered until the workpiece is completely released.

[0069] In the process of clamping or releasing the workpiece by the clamping mechanism 2, the connecting rod 11 is in a rotating motion mode, and the motion trajectories of the two sides of the connecting rod 11 are actually curves. If the piston rod 41 and the push rod 3 are directly connected to the connecting rod 11, the motion trajectories of the piston rod 41 and the push rod 3 are curves, that is, the piston rod 41 and the push rod 3 are not always in a constant vertical direction during movement, and cannot maintain centering, which is easy to cause damage. In order to avoid this situation, the first sliding assembly 12 and the second sliding assembly are set. When the piston rod 41 and the push rod 3 move, the first slider 122 and the second slider 132 slide along the length direction of the connecting rod 11 to eliminate the displacement of the piston rod 41 and the push rod 3 in the horizontal direction, so that the piston rod 41 and the push rod 3 are always in a constant vertical direction respectively. At the same time, in the process of clamping or releasing the workpiece by the clamping mechanism 2, the connecting rod 11 will be in a tilted state, so the first slider 122 and the second slider 132 are also tilted. At this time, since the first slide bar 121 and the second slide bar 131 are rotatably connected to the first slider 122 and the second slider 132 respectively, even if the first slider 122 and the second slider 132 are tilted, the first slide bar 121 and the second slide bar 131 are rotated to make the piston rod 41 and the push rod 3 always parallel to the horizontal plane and maintain the centering, which can prevent the piston rod 41 and the push rod 3 from tilting in the horizontal direction and avoid damage.

[0070] In this embodiment, since the piston rod 41 and the first slide bar 121 can be fixedly connected, which is a rigid connection mode, compared with the hinged connection mode, the problem of easy movement of the piston rod 41 when the workpiece is in operation can be avoided, the cylinder centering requirement is reduced, and the bearing capacity is also improved, so that the piston rod can withstand a larger radial force. In addition, during the process of the clamping mechanism 2 clamping or loosening the workpiece, the connecting rod 11 is in an inclined state, and when the connecting rod 11 is subjected to radial force, since the second slider 122 and the second slide bar 131 are rotatably connected, the piston rod 41 rotates with the second connecting rod 131, so that the piston rod 41 and the connecting rod 11 are not perpendicular to each other, and the radial force transmitted to the piston rod 41 is decomposed, so that the piston rod 41 can withstand a larger radial force and is not prone to failure. At the same time, compared with the prior art, the cylinder 4 is arranged at one end of the connecting rod 11, and is not arranged directly above the workpiece. Since the position of the cylinder 4 is changed, the weak corrosive medium such as water vapor in the workpiece and the volatile chemical corrosive medium can be prevented from damaging the cylinder 4, ensuring the normal service life.

[0071] In a specific embodiment, see Figure 2and Figure 4 The clamping mechanism 2 includes a connecting disk 21, a plurality of connecting components and a plurality of clamping parts. The connecting disk 21 is connected to the push rod 3. Preferably, in this embodiment, the push rod 3 is connected to the middle position of the connecting disk 21 to ensure the working stability of the connecting disk 21 and avoid overturning. A plurality of clamping parts are arranged along the circumference of the connecting disk 21, and each clamping part is hinged to the connecting disk 21 through a connecting component. Specifically, the clamping part includes a clamp base 25 and a claw 26 connected to each other. Each connecting component includes a first hinged rod 22, a second hinged rod 23 and a connecting rod 24. One end of the first hinged rod 22 is hinged to the connecting disk 21, and the second hinged rod 23 is hinged to the other end of the first hinged rod 22. In order to ensure the working stability of the claw 26, a plurality of parallel connecting rods 24 can be provided, and the second hinged rod 23 and the clamp base 25 are hinged at both ends.

[0072] When using, refer to Figure 4 In the process of clamping the workpiece by the clamping mechanism 2, the push rod 3 drives the connecting plate 21 to gradually move upward in the vertical direction, the first hinge rod 22 gradually rotates counterclockwise around the hinge with the connecting plate 21 (not shown in the figure) to the maximum rotation angle, then the second hinge rod 23 gradually rotates counterclockwise around the hinge with the first hinge rod 22 (not shown in the figure) to the maximum rotation angle, then the connecting rod 24 rotates around the hinge with the second hinge rod 23 toward the inner side of the workpiece, thereby driving the claw 26 to move toward the inner side of the workpiece until the workpiece is clamped. In the process of releasing the workpiece by the clamping mechanism 2, the push rod 3 drives the connecting plate 21 to gradually move downward in the vertical direction, the first hinge rod 22 and the second hinge rod 23 both rotate clockwise, and the connecting rod 24 rotates toward the outer side of the workpiece, thereby driving the claw 26 to move toward the outer side of the workpiece until the workpiece is released.

[0073] In a specific embodiment, see Figure 1 and Figure 2 The support mechanism 5 includes a clamp body 51, a first mounting frame 52 and a second mounting frame 53 connected in sequence. The first mounting frame 52 is arranged horizontally, the second mounting frame 53 is arranged vertically, the second mounting frame 53 is hinged to the connecting rod 11 through the hinge part 16, and the clamp body 51 is slidably connected to the connecting plate 21 through a sliding rod (not shown in the figure).

[0074] See also Figure 4A plurality of slide rod connection holes (not shown in the figure) are evenly arranged on the connection disk 21 to facilitate installation of the slide rod, and a push rod hole (not shown in the figure) is arranged in the middle of the connection disk 21 to facilitate connection with the push rod 3, and the push rod 3 passes through the first mounting frame 52 and the clamp body 51 to connect with the connection disk 21. When the connection disk 21 moves along the vertical direction with the push rod 3, the clamp body 51 does not restrict the movement of the connection disk 21 because the clamp body 51 is slidably connected with the connection disk 21. At the same time, when the connection disk 21 moves, the slide rod can also ensure the stability of its movement to prevent the connection disk 21 from shaking.

[0075] In a specific embodiment, see Figure 2 In order to increase the locking effect and working reliability of the clamp, as a preferred embodiment, the cylinder 4 in this embodiment adopts a locking cylinder, the locking cylinder is fixedly connected to the second mounting frame 53, and the piston rod of the locking cylinder is connected to the first slide bar 121. Specifically, the locking cylinder can adopt a locking cylinder of air pressure release spring locking type, and the locking cylinder adopts a spring to lock the piston rod. When the compressed gas is automatically filled into the locking device (not shown in the figure) provided at the end of the locking cylinder, the spring releases the piston rod 41, and the piston rod 41 can move in the vertical direction. When the input of compressed gas stops, the spring holds the piston rod 41, so that the piston rod 41 cannot move freely. The locking cylinder can use the locking cylinder of the CDNAFN model of the Japanese SMC company. Of course, the technicians in this field can also choose other forms of locking cylinders.

[0076] In a specific embodiment, see Figure 1 and Figure 2 The clamp also includes a vertically arranged positioning guide column 17, and a vertical positioning hole (not shown in the figure) is formed on the second slide bar 131. One end of the positioning guide column 17 passes through the positioning hole, and the other end is connected to the first mounting bracket 52. When the clamping mechanism 2 clamps or releases the workpiece, the push rod 3 moves up or down in the vertical direction, and the second slide bar 131 moves up or down in the vertical direction along the positioning guide column. The positioning guide column 17 ensures the centering of the push rod 3, so that the push rod 3 is always in a constant vertical direction.

[0077] In a specific embodiment, see Figure 1 and Figure 2, a bearing seat 10 is arranged outside the push rod 3, and the bearing seat 10 is connected to the second slide bar 131. Under the driving force, the push rod 3 can rotate in the bearing seat 10. The structure and working principle of the bearing seat 10 can refer to the existing technology and will not be repeated here. At the same time, a rotating shaft 6 is arranged outside the push rod 3, and a rotating driving mechanism connected to the rotating shaft 6 is provided. When in use, when the workpiece is in a clamped state, under the driving force provided by the rotating driving mechanism, the rotating shaft 6 is driven to rotate, and the push rod 3 is driven to rotate, thereby driving the connecting disk 21 connected to the push rod 3 to rotate, and driving the workpiece to rotate, so as to meet the requirements that the workpiece needs to rotate in some special cases.

[0078] In a specific embodiment, the rotation drive mechanism includes a motor assembly 7, a cross shaft assembly 8 and a gear rotation assembly 9. The motor assembly 7 is arranged above the second mounting frame 53, and includes a fixed support 71 and a motor 72 connected to the fixed support 71, and the fixed support 71 is connected to the second mounting frame 53. The cross shaft assembly 8 is arranged in the second mounting frame 53, one end of which is connected to the output shaft of the motor 72, and the other end is meshed with the gear rotation assembly 9, and the gear rotation assembly 9 is meshed with the rotating shaft 6. When in use, the motor 72 is started, and the motor 72 drives the cross shaft to rotate, and transmits with the gear transmission assembly, so that the rotating shaft 6 rotates, thereby driving the push rod 3 to rotate, and driving the connecting plate 21 to rotate, so as to realize the rotation of the workpiece, so as to meet the requirements of the workpiece to rotate in some special cases.

[0079] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A connecting rod mechanism for a clamp, the clamp further comprising a cylinder, a push rod, a clamping mechanism and a supporting mechanism for providing support, characterized in that: The connecting rod mechanism comprises two connecting rods parallel to each other, a first sliding assembly and a second sliding assembly; The two connecting rods are hinged to the supporting mechanism; The two ends of the two connecting rods are connected by the first sliding assembly and the second sliding assembly respectively; The cylinder is arranged vertically, and the piston rod of the cylinder is connected to the first sliding assembly; The push rod is vertically arranged, and one end is connected to the second sliding assembly, and the other end is connected to the clamping mechanism; When the piston rod moves downward or upward in the vertical direction, it drives the first sliding assembly and the second sliding assembly to slide along the length direction of the connecting rod, and drives the push rod to move upward or downward in the vertical direction, so that the clamping mechanism clamps or releases the workpiece.

2. The connecting rod mechanism for a clamp according to claim 1, characterized in that: Both ends of the two connecting rods are respectively provided with a first sliding hole and a second sliding hole along the length direction thereof; The first sliding assembly includes a first sliding rod and first sliders at both ends of the first sliding rod, the first sliding rod is rotatably connected to the first slider, the first slider is slidably disposed in the first sliding hole, and the first sliding rod is connected to the piston rod; The second sliding assembly includes a second sliding rod and second sliders at both ends of the second sliding rod, the second sliding rod is rotatably connected to the second slider, the second slider is slidably disposed in the second sliding hole, and the second sliding rod is connected to the push rod.

3. A clamp, characterized in that: It comprises a cylinder, a clamping mechanism, a supporting mechanism and the connecting rod mechanism described in any one of claims 1 or 2.

4. The clamp according to claim 3, characterized in that The clamping mechanism comprises a connecting plate connected to the push rod, a plurality of connecting components and a plurality of clamping parts; The connecting disk is connected to the push rod, the plurality of clamping portions are arranged along the circumference of the connecting disk, and each of the clamping portions is hinged to the connecting disk through the connecting component.

5. The clamp according to claim 4, characterized in that The clamping portion includes a clamp base and a clamping claw connected to each other; The connecting assembly includes a first hinge rod, a second hinge rod and a connecting rod; One end of the first hinged rod is hinged to the connecting plate; The second hinged rod is hinged to the other end of the first hinged rod; Two ends of the connecting rod are respectively hinged to the second hinge rod and the clamp base.

6. The clamp according to claim 3, characterized in that The support mechanism comprises a clamp body, a first mounting frame and a second mounting frame connected in sequence; The first mounting frame is arranged horizontally; The second mounting frame is vertically arranged and hinged to the connecting rod; The clamp body is slidably connected to the connection disk, wherein the push rod passes through the first mounting frame and the clamp body is connected to the connection disk.

7. The clamp according to claim 6, characterized in that The cylinder is a locking cylinder; The locking cylinder is fixedly connected to the second mounting frame; The piston rod of the locking cylinder is connected to the first sliding assembly.

8. The clamp according to claim 6, characterized in that It also includes a bearing seat sleeved outside the push rod, and the bearing seat is connected to the second sliding assembly; The clamp comprises a rotating shaft and a rotating driving mechanism connected to the rotating shaft; The rotating shaft sleeve is arranged outside the push rod, and is used to drive the rotating shaft to rotate under the action of the rotation driving mechanism, and drive the push rod to rotate.

9. The clamp according to claim 8, characterized in that The rotation drive mechanism includes a motor assembly, a cross shaft assembly and a gear rotation assembly; The motor assembly is arranged above the second mounting frame, and comprises a fixed support and a motor connected to the fixed support; The fixed support is connected to the second mounting frame; The cross shaft assembly is arranged in the second mounting frame, one end of which is connected to the output shaft of the motor and the other end of which is meshed with the gear rotating assembly; The gear rotating assembly is meshed with the rotating shaft.

10. The clamp according to any one of claims 6 to 9, characterized in that: Also included are vertically disposed positioning guide posts; One end of the positioning guide column is slidably connected to the second sliding assembly, and the other end is connected to the first mounting frame.

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