CN215318014U

CN215318014U - Clamping mechanism for ball refiner and flexible clamping jaw thereof

Info

Publication number: CN215318014U
Application number: CN202121070132.3U
Authority: CN
Inventors: 贺坤坤; 姜慧
Original assignee: Wenzhou Artech Machinery Technology Co ltd
Current assignee: Wenzhou Artech Machinery Technology Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-12-28
Anticipated expiration: 2031-05-18

Abstract

The utility model relates to the technical field of valve ball manufacturing, in particular to a clamping mechanism for a ball refiner and a flexible clamping jaw thereof. A flexible jaw comprising a chuck for gripping a workpiece; the mandrel is connected with the chuck through a connecting disc; a shaft sleeve for connection to a power source; the shaft sleeve is internally provided with an elastic piece, and the elastic piece is pressed between the shaft sleeve and the mandrel. The elastic piece is arranged in the shaft sleeve, and when the whole flexible clamping jaw is driven to move and a clamped workpiece is in contact with another workpiece or an object, if resistance is applied to the workpiece, the elastic piece can generate certain elastic force, so that the workpiece is prevented from being abraded due to hard collision with the other workpiece or the object, the rigid touch is converted into flexible touch, and the service life of the workpiece is prolonged.

Description

Clamping mechanism for ball refiner and flexible clamping jaw thereof

Technical Field

The utility model relates to the technical field of valve ball manufacturing, in particular to a clamping mechanism for a ball refiner and a flexible clamping jaw thereof.

Background

In order to meet the requirement of the ball valve on the corresponding sealing performance, the ball body of the ball valve is usually ground, the ball body is in contact with the valve seat when in use, and the ball body is ground in a contact grinding mode by directly adopting the valve seat matched with the ball body when in grinding.

Like the automatic machine that grinds of spheroid that chinese utility model patent number is CN201720795551.0 discloses, including the steering mechanism that carries out the fixing to the spheroid, drive steering mechanism at the reciprocating swing's of horizontal direction swing mechanism and carry out the bistrique mechanism that grinds to the spheroid, bistrique mechanism and steering mechanism are the staggered arrangement, and vertical track board is connected to swing mechanism, orders about vertical track board around the reciprocal swing of gyration shaft seat for the disk seat that presss from both sides on the bistrique can grind spheroidal each different angle.

In the ball grinding process, the grinding head mechanism is used for clamping the valve seat all the time, and the valve seat is required to be driven to move or rotate, so that the mechanism for clamping the valve seat is particularly important, most of the existing clamping jaws are rigid clamping jaws, the valve seat is in direct contact with the ball, the valve seat is prevented from colliding with the ball to cause damage, the clamping jaws are required to be moved to be accurately adjusted, and the process difficulty is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a clamping mechanism for a ball refiner and a flexible clamping jaw thereof.

The purpose of the utility model is realized as follows:

a flexible jaw comprises

A chuck for holding a workpiece;

the mandrel is connected with the chuck through a connecting disc;

a shaft sleeve for connection to a power source;

the shaft sleeve is internally provided with an elastic piece, and the elastic piece is pressed between the shaft sleeve and the mandrel.

Further set up as, axle sleeve periphery one end shaping has the screw thread section, and threaded connection has fixed cover on the screw thread section, the fixed pot of keeping away from the axle sleeve is established the periphery of dabber, and the shaping has spacing retaining ring, dabber one end shaping has spacing boss, and one side of spacing boss is equipped with the elastic component.

Further set up as, the terminal surface of connection pad inwards caves in and forms mounting groove, set up in the mounting groove respectively with connecting hole and counter bore that chuck and dabber link to each other, the shaping of chuck one side has the embedding mounting groove's installation boss.

Further set up as, the chuck is three-jaw chuck, including the disk body, disk body one side shaping has the installation boss, three draw-in groove has all been installed to opposite side circumference evenly arranged, a jack catch in every draw-in groove, the shaping of jack catch outer end has the ka tai, forms the region that is used for the centre gripping work piece between the three ka tai.

Further set up as, be equipped with first installation cavity and second installation cavity in the axle sleeve, be equipped with the baffle between first installation cavity and the second installation cavity, the elastic component is located the second installation cavity, dabber one end stretches into the second installation cavity, just the elastic component is pressed and is established between dabber and the baffle.

Further, the mandrel and the shaft sleeve are arranged in a hollow mode.

The clamping mechanism for the ball refiner comprises a driving source and the flexible clamping jaw, wherein the driving source comprises a power head, a push rod is arranged in the power head, and the outer end of the push rod extends out of the power head to be connected to the shaft sleeve.

The power head comprises a shell and a pushing assembly, a core rod is arranged in the shell, the pushing assembly comprises a guide rod arranged on the outer side of the shell, a driving cylinder and a sliding block arranged on the guide rod in a moving mode, one end of the sliding block extends to the inner portion of the shell and is connected with the core rod, and the push rod is installed in the core rod.

Further, the shell is provided with an opening for the sliding block to extend into.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:

1. the elastic piece is arranged in the shaft sleeve, and when the whole flexible clamping jaw is driven to move and a clamped workpiece is in contact with another workpiece or an object, if resistance is applied to the workpiece, the elastic piece can generate certain elastic force, so that the workpiece is prevented from being abraded due to hard collision with the other workpiece or the object, the rigid touch is converted into flexible touch, and the service life of the workpiece is prolonged.

2. According to the utility model, the threaded section is formed at one end of the periphery of the shaft sleeve, the fixed sleeve is in threaded connection with the threaded section, one end of the fixed sleeve, which is far away from the shaft sleeve, is sleeved on the periphery of the mandrel, the limiting check ring is formed, the limiting boss is formed at one end of the mandrel, the movement of the limiting boss is limited by the matching of the limiting boss and the limiting check ring, the separation of the limiting boss and the mandrel due to excessive movement is avoided, and the stability of the structure is enhanced.

3. The clamping mechanism directly drives the flexible clamping jaw through the power head, and has a simple structure and a good driving effect.

Drawings

FIG. 1 is a schematic view of a flexible jaw of the present invention.

Figure 2 is a cross-sectional view of a flexible jaw of the present invention.

Figure 3 is an exploded view of the structure of the flexible jaw of the present invention.

Fig. 4 is a schematic structural view of a clamping mechanism for a ball refiner of the present invention.

Figure 5 is a cross-sectional view of a clamping mechanism for a ball refiner according to the utility model.

Reference numerals: 1-a chuck; 11-mounting a boss; 12-a tray body; 13-a card slot; 14-a jaw; 15-clamping table; 16-region; 2-mandrel; 21-a limit boss; 3-a connecting disc; 31-mounting grooves; 32-connecting hole; 33-counterbores; 4-shaft sleeve; 41-a thread segment; 42-a first mounting cavity; 43-a second mounting cavity; 44-a separator; 5-an elastic member; 62-fixing the sleeve; 61-a limit retainer ring; 7-a power head; 71-a push rod; 72-a housing; 73-core rod; 74-a guide bar; 75-a drive cylinder; 76-a slide block; 77-opening the pores.

Detailed Description

The following description of the present invention will be made in detail with reference to the accompanying drawings, in which reference is made to fig. 1-5.

A flexible clamping jaw, as shown in fig. 1-3, comprises a chuck 1, a mandrel 2 and a shaft sleeve 4, wherein the chuck 1 is used for clamping a workpiece, the mandrel 2 is connected with the chuck 1 through a connecting disc 3, and the shaft sleeve 4 is used for connecting to a power source; an elastic piece 5 is arranged in the shaft sleeve 4, and the elastic piece 5 is pressed between the shaft sleeve 4 and the mandrel 2. The elastic piece 5 is a spring, and when the whole flexible clamping jaw is driven to move, and a clamped workpiece is in contact with another workpiece or an object, if resistance is applied to the workpiece, the spring can generate certain elastic force, so that the workpiece and the other workpiece or the object are prevented from being subjected to hard collision to cause abrasion. The rigid touch is changed into flexible touch, and the service life of the workpiece is prolonged.

4 periphery one end shaping of axle sleeve 4 has screw thread section 41, and threaded connection has fixed cover 6 on the screw thread section 41, fixed cover 6 keeps away from the pot head of axle sleeve 4 and establishes the periphery of dabber 2, and the shaping has spacing

retaining ring

61, 2 one end shaping of dabber has spacing boss 21, and one side of spacing boss 21 is equipped with elastic component 5. The movement of the limiting boss is limited by the matching of the limiting boss and the limiting check ring, and the separation of the limiting boss and the limiting check ring caused by excessive movement is avoided.

The one end of connection pad 3 is inwards sunken to form mounting groove 31, set up in mounting groove 31 respectively with connecting hole 32 and counter bore 33 that chuck 1 and dabber 2 link to each other, 1 one side shaping of chuck has the embedding mounting groove 31's installation boss 11. The cooperation of installation boss 11 and mounting groove makes the chuck inseparabler with being connected between the connection pad, and simultaneously, the design of counter bore makes the connection pad can not bulge with being connected of dabber, and influences being connected of connection pad and chuck.

Chuck 1 is three-jaw chuck, including disk body 12, disk body 12 one side shaping has installation boss 11, three draw-in groove 13 has evenly been arranged to opposite side circumference, all installs a jack catch 14 in every draw-in

groove

13, 14 outer end shaping of jack catch have a jack catch 15, form the region 16 that is used for the centre gripping work piece between the three jack catch 15.

Be equipped with first installation cavity 42 and second installation cavity 43 in the axle sleeve 4, be equipped with baffle 44 between first installation cavity 42 and the second installation cavity 43, elastic component 5 is located

second installation cavity

43, 2 one end of dabber stretches into second installation cavity 43, just elastic component 5 presses and establishes between dabber 2 and the baffle 44. The first mounting cavity 42 is used for mounting a push rod of a power source, so that the power source is connected with the flexible clamping jaw to drive the flexible clamping jaw to work.

The mandrel 2 and the shaft sleeve 4 are arranged in a hollow mode, so that materials are saved, and the structure is light.

A clamping mechanism for a sphere refiner is shown in figures 4 and 5 and comprises a driving source and the flexible clamping jaw, wherein the driving source comprises a power head 7 and a motor 8, a push rod 71 is arranged in the power head 7, the outer end of the push rod 71 extends out, the power head 7 is connected to a shaft sleeve 4, and the inner end of the push rod 71 is connected to an output shaft of the motor 8 through a belt transmission device.

The power head 7 comprises a shell 72 and a pushing assembly, wherein a core rod 73 is arranged in the shell 72, the pushing assembly comprises a guide rod 74 arranged on the outer side of the shell 72, a driving air cylinder 75 and a sliding block 76 movably arranged on the guide rod 74, one end of the sliding block 76 extends into the shell 72 and is connected with the core rod 73, and the push rod 71 is arranged in the core rod 73. The housing 72 is provided with an opening 77 into which the slider 76 extends. When the driving cylinder 75 drives the slide block 76 to move on the guide rod 74, the guide rod 74 can be driven to move, and therefore the flexible clamping jaw is pushed to move.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A flexible jaw, characterized by: comprises that

A chuck (1) for holding a workpiece;

the mandrel (2) is connected with the chuck (1) through a connecting disc (3);

a shaft sleeve (4) for connection to a power source;

an elastic piece (5) is arranged in the shaft sleeve (4), and the elastic piece (5) is pressed between the shaft sleeve (4) and the mandrel (2).

2. The flexible jaw of claim 1, wherein: axle sleeve (4) periphery one end shaping has screw thread section (41), and threaded connection has fixed cover (6) on screw thread section (41), the pot head that axle sleeve (4) were kept away from in fixed cover (6) is established the periphery of dabber (2), and the shaping has spacing retaining ring (61), dabber (2) one end shaping has spacing boss (21), and one side of spacing boss (21) is equipped with elastic component (5).

3. A flexible jaw according to claim 1 or 2, characterized in that: one end surface of the connecting disc (3) is recessed inwards to form a mounting groove (31), a connecting hole (32) and a counter bore (33) which are respectively connected with the chuck (1) and the mandrel (2) are formed in the mounting groove (31), and the connecting hole (32) and the counter bore (33) are arranged at intervals; and a mounting boss (11) embedded into the mounting groove (31) is formed on one side of the chuck (1).

4. A flexible jaw according to claim 3, wherein: chuck (1) is three-jaw chuck, including disk body (12), disk body (12) one side shaping has installation boss (11), and three draw-in groove (13) have all been installed in opposite side circumference evenly arranged, one jack catch (14) in every draw-in groove (13), jack catch (14) outer end shaping has ka tai (15), forms between three ka tai (15) region (16) that are used for the centre gripping work piece.

5. The flexible jaw of claim 1, wherein: be equipped with first installation cavity (42) and second installation cavity (43) in axle sleeve (4), be equipped with baffle (44) between first installation cavity (42) and second installation cavity (43), elastic component (5) are located second installation cavity (43), dabber (2) one end stretches into second installation cavity (43), just elastic component (5) are pressed and are established between dabber (2) and baffle (44).

6. The flexible jaw of claim 1, wherein: the mandrel (2) and the shaft sleeve (4) are arranged in a hollow mode.

7. A clamping mechanism for a ball refiner, characterized in that it comprises a drive source and a flexible jaw according to any one of claims 1-6, the drive source comprising a power head (7), a push rod (71) being arranged in the power head (7), the outer end of the push rod (71) extending beyond the power head (7) and being connected to the bushing (4).

8. The clamping mechanism for a ball refiner of claim 7, wherein: the power head (7) comprises a shell (72) and a pushing assembly, a core rod (73) is arranged in the shell (72), the pushing assembly comprises a guide rod (74) arranged on the outer side of the shell (72), a driving air cylinder (75) and a sliding block (76) movably arranged on the guide rod (74), one end of the sliding block (76) extends to the inside of the shell (72) and is connected with the core rod (73), and the push rod (71) is arranged in the core rod (73).

9. The clamping mechanism for a ball refiner of claim 8, wherein: the shell (72) is provided with an opening (77) for the sliding block (76) to extend into.