CN214444605U

CN214444605U - Cylinder chuck

Info

Publication number: CN214444605U
Application number: CN202023224342.1U
Authority: CN
Inventors: 许日磷
Original assignee: Dongguan Yongweishun Hardware Technology Co ltd
Current assignee: Dongguan Yongweishun Hardware Technology Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-10-22
Anticipated expiration: 2030-12-28

Abstract

The utility model belongs to the technical field of clamps, in particular to an air cylinder chuck, which comprises an air cylinder part for providing driving force, two chucks for clamping an object and a connecting part for connecting the air cylinder part and the two chucks; the connecting part comprises a wedge block mechanism which is connected with the output shaft of the cylinder part and the two chucks, and a sliding seat which is arranged on the cylinder part; the wedge block mechanism comprises an ejection block arranged on an output shaft of the air cylinder part and two sliding blocks sliding along the sliding seat, and the two chucks are respectively arranged on the corresponding sliding blocks; the two sliding blocks and the ejection block form a wedge block structure respectively, and the two sliding blocks move in opposite directions or relative to each other along the sliding seat to enable the two chucks to realize opening or clamping operation. The utility model provides the high precision of counterpoint centre gripping is suitable for and carries out firm centre gripping to little work piece, ensures centre gripping or open smooth and easy nature, solves current pneumatic chuck and brings because of the centre gripping precision is not good and be not suitable for the drawback of little work piece centre gripping.

Description

Cylinder chuck

Technical Field

The utility model belongs to the technical field of anchor clamps, especially, relate to a cylinder chuck.

Background

The pneumatic chuck, or cylinder chuck, is a common fixture in industrial production lines for clamping and transferring objects, so that the efficiency of the whole production line is affected by the smooth operation of the pneumatic chuck.

At present, a plurality of pneumatic chucks on the market mostly adopt a combination mode of combining a parallel cylinder with a clamping tool to realize the purpose of clamping. Generally, for clamping a large workpiece, the clamping can be firm by the combined clamping mode of the existing pneumatic chuck; however, for clamping a small workpiece, the clamping alignment accuracy of the parallel cylinder is not high, so that the clamping fixture is easy to have low alignment accuracy, and the clamping firmness of the small workpiece is affected. In addition, the existing pneumatic chuck is found to have a mechanical dead point in the use process, when the pneumatic chuck clamps a workpiece, the workpiece can not be opened or closed, and the smoothness of the clamping process and the firmness of clamping the small workpiece are greatly influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cylinder chuck aims at solving the smooth and easy nature of the pneumatic chuck among the prior art poor and to the insecure scheduling technical problem of little work piece centre gripping.

In order to achieve the above object, an embodiment of the present invention provides a cylinder chuck, including a cylinder portion providing driving force, two chucks for clamping an object, and a connection portion connecting the cylinder portion and the two chucks. The purpose of the structural design is to realize that the power of the cylinder part is transmitted to the two chucks for clamping or loosening the workpiece through the transfer function of the connecting part.

Optionally, the connecting part comprises a wedge block mechanism for connecting the output shaft of the cylinder part and the two chucks and a sliding seat arranged on the cylinder part; the wedge block mechanism comprises an ejection block arranged on an output shaft of the air cylinder part and two sliding blocks sliding along the sliding seat, and the two chucks are respectively arranged on the corresponding sliding blocks; the two sliding blocks and the ejection block form a wedge block structure respectively, and the two sliding blocks move in opposite directions or relative to each other along the sliding seat to enable the two chucks to realize opening or clamping operation. The structural design aims at structurally realizing the purpose of transferring power of the wedge block mechanism.

Optionally, the ejection block comprises a base block and two first wedges which are mirror-symmetrical along the center line of the base block, and the two first wedges are both arranged on the side surface of the base block away from one side of the cylinder part; the two sliding blocks are respectively provided with an inclined wedge surface matched with the first wedge block. The purpose of this structural design is to ensure synchronous relative movement of the two slides.

Optionally, the inclined wedge surfaces of the two first wedges are arranged oppositely, and an elastic resetting piece is embedded between the two sliding blocks. The structural design aims to ensure the automatic resetting opposite movement of the two sliding blocks.

Optionally, the cylinder part comprises a main shaft sleeve and a cylinder arranged in the main shaft sleeve; the main shaft sleeve positioned at one end of the output shaft of the air cylinder is dug to be provided with a containing cavity for containing the base block, and the base block is arranged on the output shaft of the air cylinder.

Optionally, the accommodating cavity is provided with a guide post from the bottom surface towards one side of the base block, and the base block is provided with a guide hole matched with the guide post. The purpose of this structural design is to ensure the accuracy of the ejector block operation.

Optionally, a plurality of threaded holes are uniformly distributed in the spindle sleeve along the radial direction of the spindle sleeve, and hexagon socket head cap bolts are screwed in the threaded holes; the plurality of hexagon socket head cap bolts tightly support the cylinder from the radial direction of the main shaft sleeve. The structural design aims to mount the air cylinder so as to give power to the two chucks.

Optionally, an avoiding notch for avoiding the two sliding blocks to slide is respectively arranged on the main shaft sleeve. The purpose of the structural design is to make the wedge block mechanism compact and improve the driving stability.

Optionally, a through hole for the two sliding blocks to pass through and a sliding groove for the two sliding blocks to slide are formed in the sliding seat, a center line of the through hole is overlapped with a center line of the main shaft sleeve, and an extending direction of the sliding groove is perpendicular to the center line of the through hole.

Optionally, the sliding groove and the sliding block are respectively provided with a guide wire groove or a guide protrusion which are matched with each other. The structural design aims to ensure the sliding alignment precision of the two sliding blocks.

Optionally, the base block is in threaded connection with the cylinder output shaft, and the cylinder output shaft is screwed with two positioning nuts; the base block is positioned between the two positioning nuts. The structural design aims to realize the fine adjustment of the clamping time interval of the two clamping heads so as to quickly realize the stable clamping of the workpiece.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the cylinder chuck have one of following technological effect at least:

1. the pneumatic clamping device comprises a base block, a sliding seat, a sliding groove, a wedge block structure, a cylinder, a sliding groove, a guide groove or a guide bulge, wherein the base block is driven by the cylinder to move and the wedge block structure is used, so that the two first wedge blocks drive the two sliding blocks to move along the sliding seat synchronously and oppositely, the sliding groove and the sliding blocks are respectively provided with the guide groove or the guide bulge which are matched with each other, the alignment clamping precision of the two clamping heads is ensured, small workpieces between the two clamping heads are firmly clamped, and the defect that the existing pneumatic clamping heads are not suitable for clamping the small workpieces due to poor clamping precision is overcome. In addition, the reset elastic piece is arranged between the two sliding blocks, so that the smoothness of clamping or opening of the two chucks is ensured.

2. The ejection block is arranged between the two positioning nuts and is in threaded connection with the cylinder output shaft, and the sliding seat is provided with a structural design for allowing the two sliding blocks to penetrate through the through hole, so that fine adjustment of the position between the ejection block and the inclined wedge surfaces of the two sliding blocks can be conveniently realized by adjusting the positioning nuts according to specific conditions, the fine adjustment of the distance between the two clamping heads during clamping is realized, and the clamping of a workpiece is firm.

3. The inner hexagon bolts are adopted to tightly abut against the air cylinder from the radial direction of the main shaft sleeve, the ejection block is movably arranged on the output shaft of the air cylinder through two positioning nuts, and the two sliding blocks are arranged on the sliding seat in a limiting way through the guide wire grooves and the wedge block mechanism, so that the air cylinder chuck is convenient and quick to assemble or disassemble, and is simple and compact in structural design.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of a cylinder chuck according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a connecting portion according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a wedge mechanism according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a sliding seat according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a cylinder part according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the assembly of the cylinder and the ejection block provided in the embodiment of the present invention;

wherein, in the figures, the respective reference numerals:

10-cylinder part, 11-spindle sleeve, 111-accommodating cavity, 112-guide column, 113-threaded hole, 114-avoiding notch, 12-cylinder, 121-positioning nut, 20-clamping head, 30-connecting part, 31-wedge block mechanism, 311-ejection block, 3111-base block, 3112-first wedge block, 312-sliding block, 3121-guide projection, 32-sliding seat, 321-through hole, 322-sliding groove, 3221-guide wire groove and 33-elastic reset piece.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1, there is provided a cylinder chuck including a cylinder portion 10 for providing a driving force, two chucks 20 for holding an object, and a connecting portion 30 for connecting the cylinder portion 10 and the two chucks 20. In this embodiment, the transfer of the power of the cylinder portion 10 to the two chucks 30 is realized by the transfer function of the connecting portion 30, and the two chucks 30 are driven to close or release so as to clamp a workpiece placed between the two chucks 30.

As shown in fig. 2, 3 and 4, the connecting portion 30 includes a wedge mechanism 31 connecting the output shaft of the cylinder portion 10 and the two chucks 30, and a slide 32 provided on the cylinder portion 10. In this embodiment, the wedge mechanism 31 includes an ejector block 311 disposed on the output shaft of the cylinder portion 10 and two sliding blocks 312 sliding along the sliding base 32, and the two chucks 30 are respectively disposed on the corresponding sliding blocks 312. Specifically, the slide base 32 is provided with a through hole 321 for the two slide blocks 312 to pass through and a sliding groove 322 for the two slide blocks 312 to slide, a center line of the through hole 321 coincides with a center line of the cylinder portion 10, and an extending direction of the sliding groove 322 is perpendicular to the center line of the through hole 321.

Further, the ejection block 311 includes a base block 3111 and two first wedges 3112 mirror-symmetrical along a center line of the base block, and both the first wedges 3112 are disposed on a side of the base block 3111 away from the cylinder portion 10; the two sliding blocks 312 and the ejection block 311 form a wedge structure, the two sliding blocks 312 are respectively provided with an inclined wedge surface matched with the first wedge 3112, and the ejection block 311 is driven by the cylinder portion 10 and combined with the wedge mechanism 31, so that the two sliding blocks 312 synchronously move in opposite directions or relatively along the sliding seat 32 to realize the opening or clamping operation of the two chucks 20. In addition, in order to ensure the positioning accuracy of the two chucks 20, the sliding groove 322 and the slider 312 are respectively provided with a guiding groove 3221 or a guiding protrusion 3121 which are matched with each other. The utility model discloses realize ensureing two the precision of chuck 20 counterpoint centre gripping is convenient for realize carrying out firm centre gripping to little work piece, solves current pneumatic chuck and brings because of the not good drawback that is not suitable for little work piece centre gripping of centre gripping precision.

Further, the inclined wedge surfaces of the two first wedge blocks 3112 are opposite to each other, and an elastic restoring member 33 is embedded between the two sliding blocks 312. In this embodiment, in order to reduce the overall size of the wedge mechanism 31, the inclined wedge surfaces of the two first wedges 312 are arranged oppositely, so that the inclined wedge surfaces of the two sliding blocks 312 are located between the two first wedges 3112. After the ejector block 311 removes the acting force on the two sliding blocks 312, the two sliding blocks 312 can automatically realize the opening and resetting operation, and the elastic resetting piece 33 is embedded between the two sliding blocks 312; specifically, the elastic return element 33 is a spring, and two opposite surfaces of the two sliding blocks 312 can be realized by digging counter bores at two ends of the embedded spring, so that the spring element can be prevented from jumping out to influence the convenient use of the cylinder chuck.

As shown in fig. 5, the cylinder portion 10 includes a main shaft sleeve 11 and a cylinder 12 provided in the main shaft sleeve; the main shaft sleeve 11 at one end of the output shaft of the cylinder 12 is provided with a containing cavity 111 for containing the base block 3111, and the base block 3111 is arranged on the output shaft of the cylinder 12. In order to improve the moving precision of the ejection block 311, the base block 3111 is provided with a guide post 112 from the bottom surface toward one side of the base block 3111, and the base block 3111 is provided with a guide hole matched with the guide post 112; the utility model discloses a two is ensured to the high accuracy guide effect of guide post 112 the stationarity of slider 312 synchronous operation to strengthen the centre gripping stability to the work piece.

Further, the main shaft sleeve 11 is provided with an avoiding notch 114 for avoiding the two sliding blocks 312 from sliding. The utility model discloses a go out the piece 311 and two the slider 312 adopts wedge mechanism 31 is for not interfering two as power the motion of opening of slider 312, also for making simultaneously wedge mechanism 31 is compact, improves the purpose of drive stability, and this embodiment is through seted up on the main shaft cover 11 dodge notch 114 and can realize.

Further, a plurality of threaded holes 113 are uniformly distributed in the spindle sleeve 11 along the radial direction, and hexagon socket head bolts are screwed in the threaded holes; a plurality of hexagon socket head cap bolts are tightly pressed against the cylinder 12 from the radial direction of the spindle sleeve 11, and the structural design aims to conveniently install the cylinder 12 so as to provide power for the two chucks 20.

As shown in fig. 3 and 6, the base block 3111 is in threaded connection with the output shaft of the cylinder 32, and two positioning nuts 121 are screwed on the output shaft of the cylinder 32; the base block 3111 is located between the two positioning nuts 121, and the structural design enables the positioning nuts 121 to be adjusted conveniently to achieve fine adjustment of the positions between the inclined wedge surfaces of the ejection block 311 and the two sliding blocks 312, so that the distance between the two chucks 20 during clamping is finely adjusted, and the workpieces can be clamped firmly.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An air cylinder chuck comprises an air cylinder part for providing driving force, two chucks for clamping an object and a connecting part for connecting the air cylinder part and the two chucks; the method is characterized in that: the connecting part comprises a wedge block mechanism which is connected with the output shaft of the cylinder part and the two chucks, and a sliding seat which is arranged on the cylinder part; the wedge block mechanism comprises an ejection block arranged on an output shaft of the air cylinder part and two sliding blocks sliding along the sliding seat, and the two chucks are respectively arranged on the corresponding sliding blocks; the two sliding blocks and the ejection block form a wedge block structure respectively, and the two sliding blocks move in opposite directions or relative to each other along the sliding seat to enable the two chucks to realize opening or clamping operation.

2. The cylinder chuck according to claim 1, wherein: the ejection block comprises a base block and two first wedge blocks which are in mirror symmetry along the center line of the base block, and the two first wedge blocks are arranged on the side surface of the base block far away from one side of the cylinder part; the two sliding blocks are respectively provided with an inclined wedge surface matched with the first wedge block.

3. The cylinder chuck according to claim 2, wherein: the inclined wedge surfaces on the two first wedge blocks are oppositely arranged, and an elastic reset piece is embedded between the two sliding blocks.

4. The cylinder chuck according to claim 2, wherein: the cylinder part comprises a main shaft sleeve and a cylinder arranged in the main shaft sleeve; the main shaft sleeve positioned at one end of the output shaft of the air cylinder is dug to be provided with a containing cavity for containing the base block, and the base block is arranged on the output shaft of the air cylinder.

5. The cylinder chuck according to claim 4, wherein: the containing cavity is provided with a guide post from the bottom surface towards one side of the base block, and the base block is provided with a guide hole matched with the guide post.

6. The cylinder chuck according to claim 4, wherein: the spindle sleeve is uniformly distributed with a plurality of threaded holes along the radial direction, and the threaded holes are internally screwed with hexagon socket head cap bolts; the plurality of hexagon socket head cap bolts tightly support the cylinder from the radial direction of the main shaft sleeve.

7. The cylinder chuck according to claim 4, wherein: and the main shaft sleeve is respectively provided with an avoidance notch for avoiding two sliding blocks to slide.

8. The cylinder chuck according to claim 4, wherein: the sliding seat is provided with a through hole for the two sliding blocks to pass through and a sliding groove for the two sliding blocks to slide, the center line of the through hole is superposed with the center line of the main shaft sleeve, and the extending direction of the sliding groove is perpendicular to the center line direction of the through hole.

9. The cylinder chuck according to claim 8, wherein: and the sliding groove and the sliding block are respectively provided with a guide wire groove or a guide bulge which are matched with each other.

10. The cylinder chuck according to claim 4, wherein: the base block is in threaded connection with the cylinder output shaft, and the cylinder output shaft is in threaded connection with two positioning nuts; the base block is positioned between the two positioning nuts.