Holding mechanism

Abstract

The utility model provides an enclasping mechanism which comprises a linear guide rail, sliding blocks arranged on the two sides of the linear guide rail in a sliding mode and an enclasping hinge base arranged in the middle of the linear guide rail, and the sliding blocks are controlled by a driving piece to move towards the enclasping hinge base. The sliding block is provided with a movable hinge base, the movable hinge base is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to a holding block, the holding block is fixedly connected with one end of a swing rod, and the other end of the swing rod is hinged to the holding hinge base; and holding grooves matched with the workpiece in shape are formed in the inner sides of the two holding blocks. Through the combined action of the clasping hinge seat and the connecting rod, a part of transverse pressure is converted into longitudinal pressure, so that the clasping block can constrain a workpiece on the side surface and the top surface at the same time, the efficiency is higher, a longitudinal driving structure does not need to be additionally mounted, the total height of the clasping mechanism is effectively reduced, and the space utilization rate is improved.

Description

Technical Field

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

[0002] In the riveting process of automotive parts, for products that overlap and splice up and down, three-dimensional pressing is often required before riveting. Conventional clamping mechanisms need to set up both horizontal and vertical drive structures to achieve front-to-back, left-to-right, and up-to-down clamping. The structure is complex, occupies a large space, is difficult to implement, and requires manual adjustment of the clamping state in three dimensions, which is inefficient and dangerous, and the riveting quality is difficult to guarantee. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a clamping mechanism for solving the problem that the clamping mechanism in the prior art cannot clamp three dimensions at the same time and has a complex structure.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a clamping mechanism, including a linear guide rail, a slider slidingly arranged on both sides of the linear guide rail, and a clamping hinge seat arranged in the middle position of the linear guide rail, and the sliders are respectively controlled by driving members to move toward the clamping hinge seat; a movable hinge seat is provided on the slider, and the movable hinge seat is hinged to one end of a connecting rod, and the other end of the connecting rod is hinged to a clamping block, and the clamping block is fixedly connected to one end of a rocker rod, and the other end of the rocker rod is hinged to the clamping hinge seat; the inner sides of the two clamping blocks are provided with clamping grooves matching the shape of the workpiece.

[0005] In one embodiment of the utility model, a mounting plate is further included, the linear guide rail is fixedly arranged on the mounting plate, and the clamping hinge seat is also fixedly arranged on the mounting plate and is located in the middle position of the linear guide rail.

[0006] In one embodiment of the utility model, the linear guide rails include two parallel rails, the sliders are symmetrically arranged on both sides of the two linear guide rails, a clamping hinge seat is arranged in the middle position of each of the linear guide rails, and rocker arms are respectively arranged at both ends of the clamping block, and the top end of the rocker arm is hinged to the corresponding clamping hinge seat.

[0007] In one embodiment of the present invention, the top ends of the four swing rods are coaxially mounted on the corresponding clamping hinge seats.

[0008] In an embodiment of the present invention, the two sliders move synchronously.

[0009] In an embodiment of the present invention, a friction pattern is disposed on the surface of the clamping groove.

[0010] In one embodiment of the utility model, a through slot is provided in the middle of the clamping block, and a riveting tool passes through the through slot to perform riveting operations.

[0011] In one embodiment of the present invention, a pair of ear pieces are provided at the middle portion of the outer side of the clamping block, and the connecting rod is hinged between the two ear pieces.

[0012] As described above, the clamping mechanism of the utility model has the following beneficial effects:

[0013] 1. The utility model converts part of the lateral pressure to the longitudinal direction through the joint action of the clamping hinge seat and the connecting rod, so that the clamping block can restrain the workpiece on the side and top surface at the same time, which is more efficient and does not require the installation of a longitudinal drive structure, effectively reducing the total height of the clamping mechanism and improving space utilization.

[0014] 2. The clamping mechanism of the utility model adopts a reasonable design, the clamping process is quick and simple, no manual adjustment is required, the efficiency is higher, and the clamping state has higher accuracy.

[0015] 3. The utility model can make the operation of the slider more stable and smooth by means of two parallel linear guide rails, and it is not easy to deviate from the straight line track; the utility model can simultaneously apply downward pressure to both sides of the clamping block by respectively arranging clamping hinge seats on both sides of the clamping block, so that the force of the clamping block on the workpiece is more uniform, thereby improving the clamping accuracy.

[0016] 4. The utility model coaxially mounts the top end of the swing rod on the corresponding clamping hinge seat, which effectively improves the dimensional accuracy of the clamping state. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The display is a structural schematic diagram of a clamping mechanism disclosed in the utility model Figure 1 .

[0018] Figure 2 The display is a structural schematic diagram of a clamping mechanism disclosed in the utility model Figure 2 .

[0019] Figure 3 The display is a structural schematic diagram of a clamping mechanism disclosed in the utility model Figure 3 .

[0020] Component number description

[0021] 1. Driving part; 2. Slider; 3. Active hinge seat; 4. Linear guide; 5. Connecting rod; 6. Clamping block; 7. Rocker arm; 8. Clamping hinge seat; 9. Mounting plate; 10. Workpiece; 11. Riveting tool. DETAILED DESCRIPTION

[0022] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0023] See also Figures 1 to 3 The utility model provides a clamping mechanism, including a linear guide 4, a slider 2 slidably arranged on both sides of the linear guide 4, and a clamping hinge seat 8 arranged in the middle position of the linear guide 4, the sliders 2 are respectively controlled by the driving member 1 to move toward the clamping hinge seat 8; a movable hinge seat 3 is provided on the slider 2, the movable hinge seat 3 is hinged to one end of a connecting rod 5, the other end of the connecting rod 5 is hinged to a clamping block 6, the clamping block 6 is fixedly connected to one end of a rocker rod 7, the other end of the rocker rod 7 is hinged to the clamping hinge seat 8; the inner sides of the two clamping blocks 6 are provided with clamping grooves matching the shape of the workpiece 10.

[0024] Both ends of the connecting rod 5 are in an active state. When the slider 2 moves, it can give a lateral force to the clamping block 6 through the connecting rod 5. The utility model converts part of the lateral pressure to the longitudinal pressure through the joint action of the clamping hinge seat 8 and the connecting rod 5, so that the clamping block 6 can restrain the workpiece 10 on the side and the top surface at the same time, which is more efficient and does not need to install a longitudinal clamping mechanism separately, effectively reducing the total height of the clamping mechanism and improving space utilization.

[0025] Furthermore, the clamping mechanism also includes a mounting plate 9 , the linear guide rail 4 is fixedly disposed on the mounting plate 9 , and the clamping hinge seat 8 is also fixedly disposed on the mounting plate 9 and is located in the middle position of the linear guide rail 4 .

[0026] Furthermore, the linear guide rails 4 include two parallel rails, the sliders 2 are symmetrically arranged on both sides of the two linear guide rails 4, a clamping hinge seat 8 is arranged in the middle position of each of the linear guide rails 4, and rocker arms 7 are respectively arranged at both ends of the clamping block 6, and the top end of the rocker arm 7 is hinged to the corresponding clamping hinge seat 8.

[0027] By setting two parallel linear guide rails 4, the movement of the slider 2 can be made more stable and smooth, and it is not easy to deviate from the straight track. By setting the clamping hinge seats 8 on both sides of the clamping block 6, downward pressure can be applied to both sides of the clamping block 6 at the same time, so that the force of the clamping block 6 on the workpiece 10 is more uniform, and the clamping accuracy is improved.

[0028] Furthermore, the top ends of the four swing rods 7 are coaxially mounted on the corresponding clamping hinge seats 8, which effectively improves the dimensional accuracy of the clamping state.

[0029] Furthermore, the two sliders 2 move synchronously, which effectively prevents the problem of clamping and misalignment. The slider 2 is driven by a driving member 1, which is generally selected from a cylinder. Therefore, the driving members 1 on both sides are preferably synchronous cylinders.

[0030] In one embodiment of the utility model, the shape of the clamping groove is set according to the shape of the workpiece 10, and the clamping groove can clamp the front and rear sides, left and right sides, and top and bottom of the workpiece 10 at the same time, without manual correction, and has higher efficiency. The surface of the clamping groove is provided with a friction mesh. By providing the friction mesh, friction can be increased to prevent the workpiece 10 from sliding. The entire mechanism has a simple structure and is easy to use.

[0031] Furthermore, a through slot is provided in the middle of the clamping block 6, and a through center hole is provided in the middle of the mounting plate 9. The riveting operation is performed after the riveting tool 11 passes through the center hole and the through slot in turn.

[0032] Furthermore, a pair of ear pieces are provided at the middle portion of the outer side of the clamping block 6, and the connecting rod 5 is hinged between the two ear pieces.

[0033] The working principle of the utility model is as follows: when the cylinder-driven sliders 2 on the left and right sides move toward the clamping hinge seat 8, through the transmission of the connecting rod 5, the clamping blocks 6 on the left and right sides rotate around the clamping hinge seat 8 and approach the workpiece 10, forming a clamping state; at this time, the end of the riveting tool descends and passes through the center hole of the mounting plate 9 and the through slot of the clamping block 6, approaching the workpiece 10 for riveting operation. When the clamping block 6 clamps the workpiece 10, its side and top surfaces are in contact with the workpiece 10, which can constrain the side, top and bottom surfaces of the workpiece 10, reduce the deformation of the workpiece 10 during the riveting process, and improve the riveting quality. After the riveting is completed, the cylinder-driven sliders 2 on the left and right sides move away from the clamping hinge seat 8, so that the clamping blocks 6 on the left and right sides move away from the workpiece 10, and the clamping mechanism releases the clamping state.

[0034] Among them, the terms such as "upper", "lower", "left", "right", "front", "back", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present utility model without substantially changing the technical content.

[0035] The utility model converts part of the lateral pressure to the longitudinal pressure through the combined action of the clamping hinge seat and the connecting rod, so that the clamping block can restrain the workpiece on the side and top surface at the same time, which is more efficient and does not need to install a longitudinal driving structure separately, effectively reducing the total height of the clamping mechanism and improving space utilization. The utility model can make the operation of the slider more stable and smooth by two parallel linear guide rails, and it is not easy to deviate from the straight line track. The utility model can simultaneously apply downward pressure to both sides of the clamping block by respectively arranging clamping hinge seats on both sides of the clamping block, so that the force of the clamping block on the workpiece is more uniform and the clamping accuracy is improved. The utility model coaxially installs the top end of the swing arm on the corresponding clamping hinge seat, which effectively improves the dimensional accuracy of the clamping state. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A clamping mechanism, characterized in that: It comprises a linear guide rail, sliders slidably arranged on both sides of the linear guide rail, and a clamping hinge seat arranged in the middle of the linear guide rail, wherein the sliders are respectively controlled by a driving member to move toward the clamping hinge seat; The slider is provided with a movable hinge seat, the movable hinge seat is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to the clamping block, the clamping block is fixed to one end of the swing rod, and the other end of the swing rod is hinged to the clamping hinge seat; The inner sides of the two clamping blocks are provided with clamping grooves matching the shape of the workpiece.

2. A clamping mechanism according to claim 1, characterized in that: It also includes a mounting plate, the linear guide rail is fixedly arranged on the mounting plate, and the clamping hinge seat is also fixedly arranged on the mounting plate and located at the middle position of the linear guide rail.

3. The clamping mechanism according to claim 1, characterized in that: The linear guide rails include two parallel rails, the sliders are symmetrically arranged on both sides of the two linear guide rails, a clamping hinge seat is arranged in the middle position of each linear guide rail, and rocker arms are respectively arranged at both ends of the clamping block, and the top end of the rocker arm is hinged to the corresponding clamping hinge seat.

4. A clamping mechanism according to claim 3, characterized in that: The top ends of the four swing rods are coaxially mounted on corresponding clamping hinge seats.

5. The clamping mechanism according to claim 1, characterized in that: The two slide blocks move synchronously.

6. A clamping mechanism according to any one of claims 1 to 5, characterized in that: The surface of the clamping groove is provided with a friction mesh.

7. A clamping mechanism according to any one of claims 1 to 5, characterized in that: A through slot is provided in the middle of the clamping block, and a riveting tool passes through the through slot to perform riveting operations.

8. A clamping mechanism according to any one of claims 1 to 5, characterized in that: A pair of ear pieces are arranged at the middle part of the outer side of the clamping block, and the connecting rod is hinged between the two ear pieces.

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