CN216503198U

CN216503198U - Single-cylinder connecting rod type self-centering clamp

Info

Publication number: CN216503198U
Application number: CN202123083971.1U
Authority: CN
Inventors: 开明飞; 潘昊
Original assignee: Jiangsu Tuoheng Intelligent Equipment Co ltd
Current assignee: Jiangsu Tuoheng Intelligent Equipment Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-05-13
Anticipated expiration: 2031-12-09

Abstract

The utility model provides a single-cylinder connecting rod type self-centering clamp which comprises a sliding rail and a telescopic device, wherein the sliding rail and the telescopic device are arranged on a clamp body, the sliding rail is connected with a first sliding block and a second sliding block in a matching way, the end parts of the first sliding block and the second sliding block are respectively connected with corresponding clamping jaws, the clamping jaws comprise a rotating part and a connecting rod, and the rotating part is rotatably connected to one side of the clamp body; one end of the connecting rod is connected to the first sliding block, and the other end of the connecting rod is connected to the output end of the telescopic device; one end of the rotating piece is rotatably connected to the other end of the connecting rod, and the other end of the rotating piece is rotatably connected to the second sliding block; the rotary connecting position of the rotary piece on the clamp body is equal to the distance between two ends of the rotary piece. According to the utility model, the two sliding blocks can move synchronously through the rotating part by using only one oil cylinder, so that a self-centering effect is obtained, and the clamping firmness is increased. In addition, the rotating part is arranged on the outer side of the clamp body, so that the size of the rotating part is not limited, and the strength of the rotating part for driving the clamp to move is ensured.

Description

Single-cylinder connecting rod type self-centering clamp

Technical Field

The utility model relates to the technical field of mechanical equipment clamps, in particular to a single-cylinder connecting rod type self-centering clamp.

Background

The clamp is widely applied in the mechanical production process, and for tubular parts, the clamp adopted at present has two forms, specifically as follows:

the clamp in the first form comprises a clamp body, wherein oil cylinders are arranged at two ends of the clamp body respectively, sliding blocks are arranged at transmission ends of the oil cylinders respectively, clamping jaws are arranged at end portions of the sliding blocks, the oil cylinders drive the sliding blocks to move, and the clamping jaws at two sides are close to or far away from each other so as to achieve clamping or loosening operation. However, since the accuracy of the cylinder is limited, self-centering cannot be achieved, resulting in insecure clamping.

The second type of clamp, as shown in fig. 1, comprises a clamp body 1 'and a slide block 5', the end of the slide block is provided with a clamping jaw 6 ', and one end of the clamp body is provided with an oil cylinder 3'. The structure of the device is similar to that of the first type, and the difference is that only one oil cylinder drives one sliding block to move, and the other sliding block is fixedly connected. However, this form also fails to achieve self-centering, resulting in a weak grip.

SUMMERY OF THE UTILITY MODEL

In view of the shortcomings of the prior art, the utility model aims to provide a single-cylinder connecting rod type self-centering clamp, which is used for solving the problem that self-centering cannot be realized in the prior art, so that clamping is not firm.

In order to solve the technical problem, the utility model is realized as follows: a single-cylinder connecting rod type self-centering clamp comprises a sliding rail and a telescopic device, wherein the sliding rail and the telescopic device are arranged on a clamp body, the sliding rail is connected with a first sliding block and a second sliding block in a matching mode, the end parts of the first sliding block and the second sliding block are respectively connected with corresponding clamping jaws, the telescopic device is located at one end of the sliding rail and comprises a rotating part and a connecting rod, and the rotating part is rotatably connected to one side of the clamp body; one end of the connecting rod is connected to the first sliding block, and the other end of the connecting rod is connected to the output end of the telescopic device; one end of the rotating piece is rotatably connected to the other end of the connecting rod, and the other end of the rotating piece is rotatably connected to the second sliding block; the rotary connecting position of the rotary piece on the clamp body is equal to the distance between two ends of the rotary piece.

Further, the center position of the rotating piece is rotatably connected to the clamp body through a first rotating shaft.

Furthermore, one end of the rotating part is rotatably connected to the other end of the connecting rod through a second rotating shaft, and the other end of the rotating part is rotatably connected to the second sliding block through a third rotating shaft; the radial distance between the second rotating shaft and the first rotating shaft is equal to the radial distance between the third rotating shaft and the first rotating shaft.

Furthermore, the telescopic device is an oil cylinder.

Furthermore, the clamping opening of the clamping jaw is of a semicircular structure.

Further, a copper piece for protecting the surface of the workpiece is inlaid in the clamping opening of the clamping jaw.

Further, the rotating member is located at one side of the telescopic device.

As described above, according to the single-cylinder connecting rod type self-centering clamp, due to the ingenious design, the two sliding blocks can move synchronously through the rotating piece by only using one oil cylinder, the self-centering effect is achieved, and the clamping firmness is increased. In addition, the rotating part is arranged on the outer side of the clamp body, so that the size of the rotating part is not limited, and the strength of the rotating part for driving the clamp to move is ensured.

Drawings

FIG. 1 is a schematic view of a second prior art clamp configuration;

FIG. 2 is a schematic diagram of a single-cylinder connecting-rod type self-centering clamp according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a single-cylinder link-type self-centering fixture applied to a welding machine in an embodiment of the utility model.

Corresponding reference numerals in the background art refer to the following:

the clamp comprises a clamp body 1 ', an oil cylinder 3', a sliding block 5 'and a clamping jaw 6'.

Reference is made to the following in corresponding reference numbers in the drawings of the specification:

the clamp comprises a clamp body 1, a sliding rail 2, a telescopic device 3, a first sliding block 4, a second sliding block 5, a clamping jaw 6, a rotating part 7, a first rotating shaft 71, a second rotating shaft 72, a third rotating shaft 73, a connecting rod 8, a lathe bed 9, a main spindle box 10, a main spindle servo motor 11, a synchronous belt 12, a sliding table 13, a movable clamp 14, a thrust oil cylinder 15 and a rotary clamp 16.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 2 to 3. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

As shown in fig. 2, the utility model provides a single-cylinder connecting rod type self-centering clamp, which comprises a slide rail 2 and a telescopic device 3, wherein the slide rail 2 is arranged on a clamp body 1, the slide rail 2 is connected with a first slide block 4 and a second slide block 5 in a matching manner, the end parts of the first slide block 4 and the second slide block 5 are respectively connected with a corresponding clamping jaw 6, the telescopic device 3 is positioned at one end of the slide rail 2, and the telescopic device 3 is an oil cylinder. The clamping opening of the clamping jaw 6 is of a semicircular structure, a copper piece used for protecting the surface of a workpiece is inlaid in the clamping opening of the clamping jaw 6, and the clamping opening is completely coated on the surface of the workpiece when the workpiece is clamped, so that the surface of the workpiece is effectively protected from being intact and not deformed.

And the telescopic device also comprises a rotating piece 7 and a connecting rod 8, wherein the rotating piece 7 is positioned at one side of the telescopic device 3. The center position of the rotary member 7 is rotatably coupled to the jig body 1 via the first rotating shaft 71. One end of the connecting rod 8 is connected to the first sliding block 4, and the other end of the connecting rod 8 is connected to the output end of the telescopic device 3. One end of the rotary member 7 is rotatably connected to the other end of the connecting rod 8 through a second rotating shaft 72, and the other end of the rotary member 7 is rotatably connected to the second slider 5 through a third rotating shaft 73. The radial distance between the second rotation axis 72 and the first rotation axis 71 is equal to the radial distance between the third rotation axis 73 and the first rotation axis 71.

When a workpiece needs to be clamped, the telescopic device 3 works to pull the connecting rod 8, and the connecting rod 8 pulls the first sliding block 4 to move leftwards. Meanwhile, the connecting rod 8 rotates the rotating member 7, and the rotating member 7 pushes the second slider 5 to move to the right, so that the corresponding clamping jaw 6 clamps the workpiece. Since the radial distance between the second rotating shaft 72 and the first rotating shaft 71 is equal to the radial distance between the third rotating shaft 73 and the first rotating shaft 71, the distance of the left movement of the first slider 4 is equal to the distance of the right movement of the second slider 5, and the self-centering effect is realized.

As shown in fig. 3, the single cylinder link type self-centering jig is applied to a welding machine. This welding machine tool includes lathe bed 9, main shaft box 10 has been put to one side of lathe bed 9, main shaft box 10 internal rotation is connected with the main shaft, first synchronizing wheel is installed to the one end of main shaft, the other end is fixed with rotary fixture 16, main shaft box top is provided with main shaft servo motor 11, main shaft servo motor 11's transmission end fixedly connected with second synchronizing wheel, first synchronizing wheel and second synchronizing wheel pass through hold-in range 12 and connect, the opposite side of lathe bed 9 is provided with the slide rail, be provided with slip table 13 on the slide rail, be provided with removal anchor clamps 14 on the slip table 13, this removal anchor clamps 14 are single cylinder connecting rod formula self-centering anchor clamps, the bottom of removal anchor clamps 14 is fixed on slip table 13, one side of lathe bed 9 is equipped with thrust cylinder 15, thrust cylinder's output and slip table 13 fixed connection.

The main shaft servo motor 11 drives the second synchronous wheel to rotate, the first synchronous wheel is driven to rotate through the synchronous belt 12, the main shaft is driven to rotate by the first synchronous wheel, the main shaft drives the rotary fixture 16 to rotate, and parts clamped on the rotary fixture 16 rotate along with the parts. The thrust oil cylinder 15 pushes the sliding table 13 to move, the movable clamp 14 moves along with the sliding table, and the tubular part clamped on the movable clamp 14 is close to the rotary clamp 16, so that the welding operation is realized. The rotary jig 16 may be a conventional one available on the market, and only needs to satisfy a holding function during rotation.

Because the self-centering fixture of single cylinder connecting rod formula can realize from the centering for when centre gripping tubulose spare part, the centre gripping is firm, avoids spare part to appear rocking in welding process, has guaranteed the welded precision.

In conclusion, the single-cylinder connecting rod type self-centering clamp disclosed by the utility model has the advantages that through the ingenious design, the synchronous movement of the two sliding blocks is realized through the rotating piece by using only one oil cylinder, the self-centering effect is obtained, and the clamping firmness is increased. In addition, the rotating part is arranged on the outer side of the clamp body, so that the size of the rotating part is not limited, and the strength of the rotating part for driving the clamp to move is ensured. Therefore, the utility model effectively overcomes various defects in the prior art and achieves better practical effect.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a single cylinder connecting rod formula is from line-up clamp, is including setting up slide rail (2) and telescoping device (3) on anchor clamps body (1), the cooperation is connected with first slider (4) and second slider (5) on slide rail (2), the tip of first slider (4) and second slider (5) is connected with corresponding clamping jaw (6) respectively, telescoping device (3) are located the one end of slide rail (2), its characterized in that: the clamp comprises a rotating piece (7) and a connecting rod (8), wherein the rotating piece (7) is rotatably connected to one side of the clamp body (1); one end of the connecting rod (8) is connected to the first sliding block (4), and the other end of the connecting rod (8) is connected to the output end of the telescopic device (3); one end of the rotating piece (7) is rotatably connected to the other end of the connecting rod (8), and the other end of the rotating piece (7) is rotatably connected to the second sliding block (5); the distance between the rotary connecting position of the rotary piece (7) on the clamp body (1) and the two ends of the rotary piece (7) is equal.

2. The single cylinder connecting rod type self-centering clamp of claim 1, wherein: the center position of the rotating piece (7) is rotatably connected to the clamp body (1) through a first rotating shaft (71).

3. The single cylinder connecting rod type self-centering clamp of claim 2, wherein: one end of the rotating piece (7) is rotatably connected to the other end of the connecting rod (8) through a second rotating shaft (72), and the other end of the rotating piece (7) is rotatably connected to the second sliding block (5) through a third rotating shaft (73); the radial distance between the second rotating shaft (72) and the first rotating shaft (71) is equal to the radial distance between the third rotating shaft (73) and the first rotating shaft (71).

4. The single cylinder connecting rod type self-centering clamp of claim 1, wherein: the telescopic device (3) is an oil cylinder.

5. The single cylinder link self-centering clamp of claim 1, wherein: the clamping opening of the clamping jaw (6) is of a semicircular structure.

6. The single cylinder connecting rod type self-centering clamp of claim 5, wherein: copper pieces used for protecting the surface of a workpiece are inlaid in clamping openings of the clamping jaws (6).

7. The single cylinder connecting rod type self-centering clamp of claim 1, wherein: the rotating piece (7) is positioned on one side of the telescopic device (3).