CN215923376U - Clamping tool and clamping device - Google Patents

Abstract

The application provides a centre gripping frock and clamping device, the centre gripping frock includes: an annular support having opposing inner and outer surfaces, the annular support having a closing station and an opening station; the first limiting mechanisms are sequentially arranged on the inner surface along the surrounding direction of the annular supporting piece and protrude out of the inner surface; the second limiting mechanisms are used for contacting the limiting pieces and providing first pressure along a first direction to the limiting pieces, the second limiting mechanisms are formed on one side of the annular supporting piece or one side of the first limiting mechanisms, and the first direction is the arrangement direction of the annular supporting piece and the limiting pieces; and the third limiting mechanisms are sequentially arranged on the annular supporting piece along the surrounding direction, and an accommodating space for accommodating the limiting part is formed between the third limiting mechanisms and the second limiting mechanisms. The application provides a centre gripping frock makes the diapire of locating part and the axial of cylinder be close to perpendicularly to satisfy the required precision when making the locating part weld in the cylinder.

Description

Clamping tool and clamping device

Technical Field

The application relates to the field of conveying machinery, in particular to a clamping tool and a clamping device.

Background

In the logistics transportation field, the automatic conveying module replaces manpower transportation to become the mainstream turnover form of storage logistics. Among these, the planar heavy conveyor rollers are an important component of automated conveying modules, which are mainly used for conveying heavy materials, such as bins, drums, wheels, pallets or steel bins. When heavy materials are conveyed, the limiting parts are often welded at the two ends of the roller, so that the materials are guided and limited, and the phenomenon that the heavy materials deviate from a conveying track due to centripetal force or unstable gravity in the conveying process is prevented.

However, simply welding the rollers and the limiters together is not sufficient to meet the safety requirements of the storage model, since many ton tray bins can only be moved at low speed and there are often irregular bins with an offset center of gravity. In order to prevent the deviation and the shaking in the conveying process, the conveyed material must move forwards safely and stably between the two limiting parts, so that the requirement of relative jumping between the limiting parts and the roller must be met, and the conveyed material can be made to move forwards stably enough. However, in the existing welding method, the limiting piece is welded on the roller without any auxiliary tool, and the precision requirement is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a clamping tool, so that the accuracy requirement is met when the limiting part is welded on a roller.

On the one hand, this application embodiment provides a centre gripping frock for centre gripping locating part and be fixed in the cylinder periphery with the locating part, include:

an annular support having opposing inner and outer surfaces, the annular support having a closing station and an opening station;

the first limiting mechanisms are sequentially arranged on the inner surface along the surrounding direction of the annular supporting piece and protrude out of the inner surface so as to be abutted against the outer surface of the roller when the annular supporting piece is at a closing station;

the second limiting mechanisms are used for contacting the limiting pieces and providing first pressure along a first direction to the limiting pieces, the second limiting mechanisms are formed on one side of the annular supporting piece or one side of the first limiting mechanisms, and the first direction is the arrangement direction of the annular supporting piece and the limiting pieces;

the third limiting mechanisms can reciprocate in the first direction to provide second pressure opposite to the first pressure direction for the limiting part, so that the limiting part is fixed on the periphery of the roller.

According to an aspect of the embodiment of the application, the third limiting mechanism includes an elastic telescopic rod and a clamping component, the elastic telescopic rod is arranged in the annular supporting member in a penetrating manner, the clamping component is arranged at the end part of the elastic telescopic member close to the limiting member, and the elastic telescopic rod can stretch along the surrounding direction perpendicular to the annular supporting member so as to drive the clamping component to provide the second pressure for the limiting member.

According to an aspect of the embodiment of the application, the elastic telescopic rod comprises a rod body, a first elastic part and a stopping part, the rod body penetrates through the annular supporting part along the surrounding direction perpendicular to the annular supporting part, the rod body is provided with a first end and a second end which are located on two sides of the annular supporting part, the clamping component is arranged at the first end and is surrounded with the second limiting mechanism to form an accommodating space, the stopping part is arranged at the second end, the first elastic part is sleeved at the second end, and when the limiting part is clamped in the accommodating space, the first elastic part is in a compression state.

According to an aspect of the embodiment of the application, the clamping component comprises a base body and a clamping jaw arranged on one side, away from the annular support piece, of the base body, the base body is connected to the first end of the rod body, and the clamping jaw comprises a bending part bent towards one side of the annular support piece so as to clamp the limiting piece in the accommodating space.

According to an aspect of the embodiment of the application, the clamping component further comprises a thread adjusting component, the jaw is connected with the base in a sliding mode, the thread adjusting component comprises a thread adjusting piece and a second elastic piece, the thread adjusting piece penetrates through the base and abuts against the jaw along the direction from the outer surface to the inner surface of the annular supporting piece, the second elastic piece is sleeved on the thread adjusting piece and located between the jaw and the base, and when the limiting piece is clamped in the containing space, the second elastic piece is in a compression state.

According to an aspect of the embodiment of the application, the annular support member comprises a first half ring and a second half ring, a first end of the first half ring and a first end of the second half ring are rotatably connected, a second end of the first half ring is provided with a clamping member, a second end of the second half ring is provided with a clamping matching member, and the clamping member and the clamping matching member are matched to enable the annular support member to be switched between the closing station and the opening station.

According to an aspect of an embodiment of the present application, the first half ring includes a first sub-half ring and a second sub-half ring oppositely disposed along a first direction, and the first sub-half ring and the second sub-half ring are fixedly connected; the second semi-ring comprises a third sub-semi-ring and a fourth sub-semi-ring which are oppositely arranged along the first direction, and the third sub-semi-ring and the fourth sub-semi-ring are fixedly connected.

According to an aspect of the embodiment of the application, the annular supporting member further includes a positioning member disposed on the first half ring or the second half ring, and the positioning member is used for connecting the clamping tool to the object to be fixed.

According to an aspect of the embodiment of the present application, the first position-limiting mechanism is a position-limiting rod, and an extending direction of the position-limiting rod is perpendicular to a surrounding direction of the annular support member.

According to an aspect of the embodiment of the application, the second limiting mechanism is an end surface of the limiting rod facing one side of the limiting member, and the end surface is perpendicular to the first direction.

In a second aspect, an embodiment of the present application further provides a clamping device, including the clamping tool described above; further comprising:

a frame;

the screw linear mechanism is installed in the frame and comprises a screw and a sliding block, the sliding block is connected to the screw in a threaded mode, the sliding block is provided with a mounting groove used for containing a clamping tool, the sliding block is provided with a protrusion located on the mounting groove, and the protrusion is used for being matched with the clamping tool to limit the position of the clamping tool.

The clamping tool provided by the embodiment of the application comprises a first limiting mechanism, a second limiting mechanism and a third limiting mechanism, wherein the first limiting mechanism is used for accurately fixing the clamping tool on the roller, and the precondition of accurate welding of a limiting part and the roller is met. Second stop gear and third stop gear are fixed in the locating part on the settlement position of cylinder to make the diapire of locating part and the axial of cylinder be nearly perpendicular, thereby satisfy the position required precision of locating part and cylinder, make the locating part weld satisfy the required precision when the cylinder, avoid the locating part because of striking the locating part with the heavy material of the too big heavy material that leads to between of beating relatively of cylinder and take place to rock and the skew track after striking the locating part, guarantee the safety of material.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present application will be described below by referring to the accompanying drawings.

FIG. 1 is a schematic diagram of a limiting element in the prior art;

fig. 2 is an assembly schematic diagram of a clamping tool, a limiting member and a roller according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a clamping tool provided in an embodiment of the present application;

FIG. 4 is a schematic structural view of the annular support member and the first limiting mechanism in the clamping tool shown in FIG. 3;

FIG. 5 is a schematic view of the clamping assembly shown in FIG. 3 at another angle;

FIG. 6 is a schematic view of a clamping assembly of the third spacing mechanism of FIG. 3;

FIG. 7 is a schematic structural diagram of a housing of the clamping assembly of FIG. 6;

fig. 8 is a schematic view of the structure of the jaws of the snap-in assembly of fig. 6.

Reference numerals:

1. a limiting member; 11. a bottom wall; 12. a circular opening; 13. an upper edge;

2. a drum;

3. clamping a tool;

31. an annular support member; 311. a first half ring; 312. a second half ring; 313. a first sub-half ring; 314. a second sub-half ring; 315. a third sub-half ring; 316. a fourth sub-half ring; 317. a clamping piece; 318. clamping a mating piece; 319. a rotating shaft;

32. a first limit mechanism;

33. a second limiting mechanism;

34. a third limiting mechanism;

341. an elastic telescopic rod; 342. a clamping assembly; 343. a rod body; 344. a first elastic member; 345. a stopper portion; 346. a base body; 3461. a fitting portion; 3462. a chute; 3463. an avoidance part; 347. a claw; 3471. a bending section; 3472. a limiting part; 3473. a slider; 3474. a guide groove;

35. a positioning member; 351. positioning holes;

x, the first direction.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the described embodiments.

In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The following description is given with the directional terms as they are used in the drawings and not intended to limit the specific structure of the present application. In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a limiting element in the prior art.

Referring to fig. 1, the limiting member 1 of the present application is a disk-shaped structure having a bottom wall 11 with a circular opening 12, the circular opening 12 is used for accommodating the roller 2, and an upper edge 13 is opposite to the bottom wall 11.

For a better understanding of the present application, embodiments of the present application are described below with reference to fig. 2 to 8.

Fig. 2 is an assembly schematic diagram of a clamping tool, a limiting member and a roller according to an embodiment of the present disclosure, and fig. 3 is a structural schematic diagram of the clamping tool according to the embodiment of the present disclosure.

Referring to fig. 2 and fig. 3 together, a clamping tool 3 provided in the embodiment of the present application is used for clamping a limiting member 1 and fixing the limiting member 1 to an end of a roller 2. The clamping tool 3 includes an annular support member 31, a plurality of first limit mechanisms 32, a plurality of second limit mechanisms 33, and a plurality of third limit mechanisms 34.

The annular support 31 has opposite inner and outer surfaces, the annular support 31 having a closing station and an opening station. When the annular support 31 is in the opening station, the drum 2 is placed therein. When the annular support 31 is in the closed station, the annular support 31 restrains the drum 2 on the side of the inner surface of the annular support 31 facing away from the outer surface, and the portion of the drum 2 in the annular support 31 is wrapped by the annular support 31. Alternatively, the circumferential direction of the ring-shaped support 31 is perpendicular to the axial direction of the drum 2.

It should be noted that the annular support 31 is annular, and may be a circular ring, an elliptical ring, or other annular structures, and it is only necessary to be able to open and close to achieve the wrapping function, and the application is not limited herein.

The plurality of first limiting mechanisms 32 are sequentially arranged on the inner surface along the surrounding direction of the annular supporting member 31 and protrude out of the inner surface of the annular supporting member 31, so that the annular supporting member 31 abuts against the outer surface of the roller 2 when in the closed station, and at the moment, the plurality of first limiting mechanisms 32 form a clamping position for fixing the roller 2.

Wherein, the quantity of first stop gear 32 is three at least, and three in a plurality of first stop gear 32 arranges along the three nodical of acute triangle-shaped, so set up, and annular support piece 31 can be fixed firmly in the periphery of cylinder 2 through first stop gear 32, can not take place to remove along cylinder 2. The three first limiting mechanisms 32 are arranged along the three intersection points of the acute triangle, so that the first limiting mechanisms 32 can be abutted against two sides of any diameter of any cross section of the roller 2, the roller 2 can be clamped better, the position accuracy of the annular supporting piece 31 is improved, and the phenomenon that the relative position of the roller 2 and the annular supporting piece 31 deviates due to the insecure clamping of the annular supporting piece 31 on the roller 2 is prevented. Alternatively, three first limiting mechanisms 32 are arranged along the three intersections of the equilateral triangle. So arrange, under the prerequisite of save material, the accuracy in 3 positions of centre gripping frock is higher.

The plurality of second limiting mechanisms 33 are configured to contact the limiting member 1 and provide a first pressure to the limiting member 1 along the first direction X, and the second limiting mechanisms 33 are formed on one side of the annular supporting member 31, or, as shown in fig. 3, the second limiting mechanisms 33 are formed on one side of the first limiting mechanisms 32. The first direction X is an arrangement direction of the ring-shaped supporting member 31 and the limiting member 1, i.e., a direction from the ring-shaped supporting member 31 to the limiting member 1.

Wherein, three in a plurality of second stop gear 33 are arranged along the three intersect of acute triangle to make second stop gear 33 comparatively even to the first pressure distribution that locating part 1 provided to, thereby locating part 1 atress is more even, and then guarantees locating part 1 follow-up welded stability. Alternatively, three second limiting mechanisms 33 are arranged along the three intersections of the equilateral triangle. So arrange under the prerequisite of save material for locating part 1 atress is more even, second stop gear 33 is better to locating part 1's spacing effect.

The plurality of third limiting mechanisms 34 are sequentially arranged on the annular supporting member 31 along the surrounding direction, and an accommodating space for accommodating the limiting member 1 is formed between the third limiting mechanisms 34 and the second limiting mechanisms 33. The third limiting mechanism 34 can reciprocate in the first direction X to provide a second pressure opposite to the first pressure to the limiting member 1, so that the limiting member 1 is fixed on the outer periphery of the drum 2.

Wherein, similar to first stop gear 32, the quantity of third stop gear 34 is three at least, and three in a plurality of third stop gear 34 is arranged along acute triangle's three intersect, so set up, can make third stop gear 34 comparatively even with the second pressure distribution that provides to locating part 1 to the locating part 1 atress is more even, and then guarantees the accuracy and the follow-up welded stability in locating part 1 position. Optionally, three third limiting mechanisms 34 are arranged along the three intersections of the equilateral triangle. So arrange under the prerequisite of save material for locating part 1 atress is more even, third stop gear 34 is better to the spacing effect of locating part 1.

The second limiting mechanism 33 provides a first pressure to the limiting member 1, the third limiting mechanism 34 provides a second pressure to the limiting member 1, the first pressure is an arrangement direction from the annular supporting member 31 to the limiting member 1, the second pressure is a direction from the limiting member 1 to the annular supporting member 31, and a direction of the first pressure and a direction of the second pressure are both parallel to an axial direction of the drum 2. The first pressure and the second pressure in opposite directions limit the limiting piece 1 in the containing space and fix the relative position of the roller 2 clamped by the clamping tool, the directions of the first pressure and the second pressure are both vertical to the bottom wall 11, and the direction of the first pressure is parallel to the axial direction of the roller, so the bottom wall 11 of the limiting piece 1 is almost vertical to the axial direction of the roller 2, at the moment, after the limiting piece 1 is welded with the outer surface of the roller 2, the bottom wall 11 of the limiting piece 1 is almost vertical to the axial direction of the roller 2, thereby meeting the requirement of the position precision of the limiting piece 1 and the roller 2, namely, in the limiting member 1 and the roller 2 after welding, the maximum distance between the bottom wall of the limiting member 1 and the preset plane along the direction parallel to the axial direction of the roller is less than 0.6mm, the preset plane is a plane passing through the welding position of the limiting piece and the roller and perpendicular to the axial direction of the roller.

The clamping tool 3 provided by the embodiment of the application comprises a first limiting mechanism 32, a second limiting mechanism 33 and a third limiting mechanism 34, wherein the clamping tool 3 is fixed outside the roller 2 by the first limiting mechanism 32, so that the precondition of accurate welding of the limiting part 1 and the roller 2 is met; the second limiting mechanism 33 and the third limiting mechanism 34 fix the limiting member 1 on the set position of the roller 2, and make the bottom wall 11 of the limiting member 1 nearly perpendicular to the axial direction of the roller 2, thereby satisfying the position accuracy requirements of the limiting member 1 and the roller 2, and satisfying the accuracy requirements when welding the limiting member on the roller.

Fig. 4 is a schematic structural view of the annular support member and the first limiting mechanism in the clamping tool shown in fig. 3.

Referring to fig. 4, in some alternative embodiments, the annular supporting member 31 includes a first half ring 311 and a second half ring 312, and a first end of the first half ring 311 and a first end of the second half ring 312 are rotatably connected to realize the switching between the opening station and the closing station of the annular supporting member 31. Optionally, the first end of the first half ring 311 and the first end of the second half ring 312 are connected by a rotating shaft 319. Of course, hinged or other rotational connections may be used.

Optionally, the first half ring 311 and the second half ring 312 are both semicircular rings, and the lengths of the two half rings are substantially equal. Of course, the first half ring 311 and the second half ring 312 may also be elliptical half rings or other shapes, and the lengths of the two halves may also be different, which is not limited herein.

The second end of the first half ring 311 is provided with a clamping member 317, the second end of the second half ring 312 is provided with a clamping matching member 318, and the clamping member 317 and the clamping matching member 318 are matched to enable the annular supporting member 31 to be switched between the closing station and the opening station.

The structure of the clamping member 317 and the clamping mating member 318 is not limited, for example, the clamping member 317 is a portion of the rapid-acting vice with a pressing rod and a hook, and the clamping mating member 318 is a portion of the rapid-acting vice with a hook. When the hook and the hook are connected, the hook is hung on the hook, and the rod is pushed upwards. When the two are disconnected, the pressure rod is pressed downwards, the hook is loosened, the hook is separated from the hook, and the first half ring 311 and the second half ring 312 are disconnected. Of course, the clamping member 317 and the clamping fitting member 318 may also be other components capable of tightly connecting the first half ring 311 and the second half ring 312, for example, the clamping member 317 is a hook with a retractable spring, the clamping fitting member 318 is a fixed hook, the retractable spring is in a stretching state when the hook and the fixed hook are clamped, and the elastic force of the retractable spring can ensure that the first limiting mechanism 32 arranged on the annular support member 31 can firmly abut against the periphery of the drum 2 when the hook is clamped on the hook.

In other alternative embodiments, the second end of the first half ring 311 and the second end of the second half ring 312 may be threaded.

Further, the first half ring 311 includes a first sub-half ring 313 and a second sub-half ring 314 oppositely disposed along the first direction X, and the first sub-half ring 313 and the second sub-half ring 314 are fixedly connected. The second half ring 312 includes a third sub-half ring 315 and a fourth sub-half ring 316 oppositely disposed along the first direction X, and the third sub-half ring 315 and the fourth sub-half ring 316 are fixedly connected.

Optionally, the first sub-half ring 313, the second sub-half ring 314, the third sub-half ring 315, and the fourth sub-half ring 316 are all arc-shaped sheet structures. The first sub-half ring 313 and the second sub-half ring 314, and the third sub-half ring 315 and the fourth sub-half ring 316 may be fixedly connected by a rod, and two ends of the rod may be respectively connected to the first sub-half ring 313 and the second sub-half ring 314, specifically, welded or screwed. Similarly, the two ends of the rod are connected to the third sub-half-ring 315 and the fourth sub-half-ring 316, respectively. The clamping member 317 is fixedly connected between the ends of the first sub-half ring 313 and the second sub-half ring 314 on the same side, and the clamping fitting member 318 is fixedly connected between the ends of the third sub-half ring 315 and the fourth sub-half ring 316 on the same side.

Optionally, the distance between the first sub-half ring 313 and the second sub-half ring 314 is greater than the distance between the third sub-half ring 315 and the fourth sub-half ring 316, so that the end portions of the third sub-half ring 315 and the fourth sub-half ring 316 on the same side can extend between the end portions of the first sub-half ring 313 and the second sub-half ring 314 on the same side, that is, the first end of the second half ring 312 can extend into the first end of the first half ring 311, and the rotation connection can be facilitated by using the rotating shaft 319.

The first half ring 311 is configured to be connected with the first sub-half ring 313 and the second sub-half ring 314, and the second half ring 312 is configured to be connected with the third sub-half ring 315 and the fourth sub-half ring 316, so that the lengths of the first half ring 311 and the second half ring 312 in the first direction X can be increased on the premise of saving materials and reducing weight, and a stable installation basis is provided for the first limiting mechanism 32 and the third limiting mechanism 34.

Referring to fig. 3, in some alternative embodiments, the annular supporting member 31 further includes a positioning member 35 disposed on the first half ring 311 or the second half ring 312, and the positioning member 35 is used to connect the clamping fixture 3 to the object to be fixed. Alternatively, the positioning member 35 is fixedly coupled between the first sub-half ring 313 and the second sub-half ring 314. Of course, it may be fixedly disposed between the third sub-half ring 315 and the fourth sub-half ring 316. The positioning member 35 can be a block structure, and a positioning hole 351 is formed in the center of the block structure and is used for being matched with the protrusion on the object to be fixed.

In some alternative embodiments, the first position-limiting mechanism 32 is a position-limiting rod, and the extending direction of the position-limiting rod is perpendicular to the surrounding direction of the annular support 31. That is, the extending direction of the stopper rod is parallel to the first direction X, that is, the extending direction of the stopper rod is parallel to the axial direction of the drum 2. The limiting rods are fixedly arranged on the inner surface of the annular supporting piece 31 and at least partially protrude out of the inner surface, and the limiting rods form a clamping position for clamping the roller 2.

Optionally, the limiting rods are round rods, and the number of the limiting rods is three. The stop rod is threadedly secured to the annular support member 31. Three gag lever post butt in the periphery of cylinder 2, every circular shape gag lever post is line contact with cylinder 2, because the stability of line contact is better than the face contact, so annular support piece 31 firmly butts in the periphery of cylinder 2 through the gag lever post, can not follow the radial displacement of cylinder 2. Then the cooperation of joint spare 317 and joint fitting piece 318 has increased the frictional force between gag lever post and the cylinder 2, and then makes annular support piece 31 hardly can take place to remove along the axial of cylinder 2. The ring-shaped supporting member 31 is firmly fixed on the drum 2 by the first limiting mechanism 32, the clamping member 317 and the clamping fitting member 318, so as to provide conditions for accurate welding of the subsequent limiting member 1.

In other alternative embodiments, the first limiting mechanism 32 may also be a protrusion provided on the inner surface of the annular support 31, and a plurality of protrusions form a clamping position for abutting against the roller 2, and the protrusion and the roller 2 are approximately regarded as point contact. The protrusions may be selected from a high friction material, such as rubber, to increase the friction between the first stopper mechanism 32 and the drum 2. The first position-limiting mechanism 32 may be configured to abut against the drum 2 to fix the position of the annular support 31, and the present application is not limited thereto.

Further optionally, the second limiting mechanism 33 is an end surface of the limiting rod facing to one side of the limiting member 1, and the end surface is perpendicular to the first direction X, that is, the end surface is perpendicular to the axial direction of the drum 2.

The limiting rods extend out of the annular supporting member 31 along the first direction X, the end faces of the limiting rods are located on the same plane, and the plane abuts against the bottom wall 11 of the limiting member 1, so that the bottom wall 11 of the limiting member 1 is perpendicular to the first direction X, namely perpendicular to the axial direction of the roller 2, and the limiting member 1 and the roller 2 meet the requirement of relative jumping in the subsequent welding process. When the end surface abuts against the bottom wall 11 of the limiting member 1, a first pressure in the first direction X is provided to the limiting member 1.

In other alternative embodiments, when the second limiting mechanism 33 is formed on one side of the annular support member 31, the second limiting mechanism 33 is a protrusion disposed on the annular support member 31. The tips of the plurality of protrusions form an abutment plane perpendicular to the first direction X, i.e. perpendicular to the axial direction of the drum 2. Alternatively, the convex portion is formed on the side plane of the ring-shaped support 31 on the side close to the limiting member 1. Of course, it may be formed on the inner surface thereof.

Fig. 5 is a schematic view of the clamping tool shown in fig. 3 at another angle.

Referring to fig. 3 and fig. 5, in some optional embodiments, the third limiting mechanism 34 includes an elastic telescopic rod 341 and a clamping component 342, the elastic telescopic rod 341 is disposed through the annular supporting member 31, the clamping component 342 is disposed at an end of the elastic telescopic member close to the limiting member 1, and the elastic telescopic rod 341 can extend and retract along a direction perpendicular to the surrounding direction of the annular supporting member 31 to drive the clamping component 342 to provide the second pressure to the limiting member 1. It should be noted that the elastic expansion link 341 extends and retracts along a surrounding direction perpendicular to the annular support 31, that is, the elastic expansion link 341 can extend and retract in the first direction X, and the elastic expansion link 341 penetrates through the annular support 31 along the first direction X.

When the elastic expansion rod 341 moves in the direction opposite to the first direction X, the clamping assembly 342 can provide a second pressure opposite to the first direction X to the limiting member 1, so as to fix the limiting member 1 on the second limiting mechanism 33. It should be noted that the first pressure changes following the change in the second pressure.

Further, the elastic telescopic rod 341 includes a rod body 343, a first elastic member 344, and a stopping portion 345, where the rod body 343 is inserted through the annular support 31 along a surrounding direction perpendicular to the annular support 31, that is, the rod body 343 is inserted through the annular support 31 along the first direction X. The rod body 343 has a first end and a second end located at two sides of the annular supporting member 31, the clamping assembly 342 is disposed at the first end and surrounds the second limiting mechanism 33 to form an accommodating space, the stopping portion 345 is disposed at the second end, the first elastic member 344 is sleeved at the second end, and when the limiting member 1 is clamped in the accommodating space, the first elastic member 344 is in a compressed state. Wherein the first elastic member 344 is located between the stopping portion 345 and the annular supporting member 31 and is always in a compressed state.

Optionally, the first elastic element 344 is a compression spring, and is sleeved on the outer circumference of the rod body 343. Of course, the first elastic member 344 may also be other elastic structures, such as a hollow rubber block. The present application is not limited thereto.

Optionally, the stopping portion 345 is a cylindrical body fixedly disposed at the second end of the rod body 343. Of course, the stopper 345 may have other shapes, for example, a rectangular parallelepiped structure. The stopping portion 345 is used for compressing the first elastic member 344 between itself and the annular supporting member 31, so that when the limiting member 1 is clamped in the accommodating space, the first elastic member 344 still in a compressed state indirectly provides elastic force to the clamping assembly 342 through the stopping portion 345 and the rod body 343, and the clamping assembly 342 presses the limiting member 1 on the second limiting mechanism 33 along a direction opposite to the first direction X, so that the limiting member 1 is firmly fixed on the outer periphery of the drum 2, and a precise position condition is provided for subsequent welding.

Fig. 6 is a schematic structural view of a clamping assembly of the third limiting mechanism in fig. 3, fig. 7 is a schematic structural view of a seat body of the clamping assembly in fig. 6, and fig. 8 is a schematic structural view of a jaw of the clamping assembly in fig. 6.

Referring to fig. 5 to 8, further, the clamping assembly 342 includes a base 346 and a claw 347 disposed on a side of the base 346 away from the ring-shaped supporting member 31. The seat 346 is connected to the first end of the rod body 343, and the latch 347 includes a bent portion 3471 bent toward one side of the annular support 31, the bent portion 3471 being used for locking the position-limiting member 1 in the accommodating space. It should be noted that, bending the bending portion 3471 toward the side of the annular supporting member 31 extends along the direction from the outer surface to the inner surface of the annular supporting member, that is, the bending portion 3471 only needs to provide the second pressure to the limiting member 1 in the direction from the locking assembly 342 to the stopping portion 345.

Optionally, the seat 346 is fixed to the first end of the rod body 343 by a threaded connection. Of course, an integral molding may be used.

The claw 347 has a limiting portion 3472 abutting against the outermost edge of the limiting member 1, the limiting portion 3472 extends along the first direction X, the bending portion 3471 is connected to the limiting portion 3472, and the plurality of limiting portions 3472 abut against the outer periphery of the limiting member 1 to prevent the limiting member 1 from moving along the radial direction. The plurality of bent portions 3471 abut against the upper edge 13 of the stopper 1, and the second stopper mechanism 33 abuts against the bottom wall 11 of the stopper 1, so that the pawl 347 and the second stopper mechanism 33 prevent the stopper 1 from moving in the axial direction thereof. The second limiting mechanism 33 and the third limiting mechanism 34 firmly fix the limiting member 1 to the outer periphery of the drum 2.

Further, the clamping assembly 342 further includes a threaded adjustment assembly, and the pawl 347 is slidably connected to the seat 346. The threaded adjusting assembly comprises a threaded adjusting piece and a second elastic piece, the threaded adjusting piece penetrates through the base body 346 along the direction from the outer surface to the inner surface of the annular supporting piece 31 and abuts against the clamping claw 347, the second elastic piece is sleeved on the threaded adjusting piece and located between the clamping claw 347 and the base body 346, and when the limiting piece 1 is clamped in the accommodating space, the second elastic piece is in a compressed state.

Wherein the pawl 347 slides along the seat 346 in a direction from the inner surface to the outer surface or from the outer surface to the inner surface of the annular support 31. Optionally, the seat body 346 is provided with two sliding grooves 3462 with openings opposite to each other in the tangential direction of the limiting member 1, one side of the claw 347 close to the seat body 346 is provided with two sliding blocks 3473 opposite to each other in the tangential direction of the limiting member 1, the two sliding blocks 3473 sandwich the two sliding grooves 3462 therebetween, and the sliding blocks 3473 are matched with the sliding grooves 3462. The sliding groove 3462 can limit the movement of the pawl 347 in the first direction X to disengage from the seat 346. Of course, the pawl 347 may have a sliding slot and the seat 346 may have a sliding block. The latch 347 and the seat 346 may be slidably engaged by other structures, and the latch 347 cannot be separated from the seat 346 along the first direction X, which is not limited herein. The sliding block 3473 and the sliding groove 3462 cooperate to provide a guide for the movement of the latch 347, so that the latch 347 moves in the radial direction of the position-limiting member 1.

Optionally, the threaded adjustment member is a threaded rod.

The seat body 346 is provided with a fitting portion 3461 opposite to the stopper portion 3472 of the pawl 347, and the stopper portion 3472 and the fitting portion 3461 are oppositely disposed in the direction from the inner surface to the outer surface of the ring-shaped support 31, i.e., in the radial direction of the retaining member 1. The matching part 3461 is provided with a threaded hole, the threaded adjusting piece is in threaded matching with the threaded hole, and the end part of the threaded adjusting piece abuts against the limiting part 3472 of the clamping jaw 347. A screw adjusting member is provided to adjust the distance between the seat 346 and the claw 347, so that the stopper 3472 of the claw 347 is firmly abutted against the outermost circumference of the stopper 1, preventing the stopper 1 from moving in the radial direction thereof.

Further alternatively, the seat body 346 has a guide groove 3474 matched with the matching portion 3461, and the guide groove 3474 is disposed on the position-limiting portion 3472 and opens toward the matching portion 3461. The guide groove 3474 is used to provide a guide for the movement of the pawl 347 in the radial direction of the limiter 1.

Optionally, the second resilient member is a compression spring. The second elastic piece is sleeved on the periphery of the screw, when the limiting piece 1 is clamped in the accommodating space, the compression spring in a compression state provides elastic force to the clamping claw 347 along the direction from the outer surface to the inner surface of the annular supporting piece 31, so that the clamping claw 347 tightly abuts against the limiting piece 1 along the radial direction of the limiting piece 1, the limiting piece 1 is prevented from moving along the radial direction of the limiting piece 1, and conditions are provided for the subsequent accurate welding process.

Optionally, the seat body 346 has an avoiding portion 3463 adapted to the limiting rod, the limiting rod passes through the avoiding portion 3463 and abuts against the limiting member 1, and the clamping component 342 and the end surface of the limiting rod form an accommodating space. Optionally, the relief portion 3463 is an arcuate slot. The base 346 is provided with an avoiding part 3463, so that the limiting rod is arranged in a penetrating manner, the stress of the limiting part 1 is more stable, and the first limiting mechanism 32 and the third limiting mechanism 34 are arranged at equal intervals, so that the clamping tool can be conveniently machined and manufactured.

The embodiment of the application further provides a clamping device which comprises the clamping tool 3, the rack and the lead screw linear mechanism. The screw linear mechanism is arranged on the rack and comprises a screw and a sliding block, and the sliding block is in threaded connection with the screw. The slider has the mounting groove that is used for holding centre gripping frock 3, and the slider has the arch that is located the mounting groove, and the arch is used for cooperating with locating part 35's locating hole 351 to the position of restriction centre gripping frock 3.

Wherein, the shape of the mounting groove is changed along with the change of the shape of the clamping tool 3. The bulge is positioned at the bottom of the mounting groove. Through setting up the arch, play the positioning action to centre gripping frock 3 to the relative position of injecing locating part 1 and cylinder 2.

While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application, and in particular, features shown in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (11)

1. The utility model provides a centre gripping frock for the centre gripping locating part will the locating part is fixed in the cylinder periphery, its characterized in that includes:

an annular support having opposing inner and outer surfaces, the annular support having a closing station and an opening station;

the first limiting mechanisms are sequentially arranged on the inner surface along the surrounding direction of the annular supporting piece and protrude out of the inner surface so as to abut against the outer surface of the roller when the annular supporting piece is at a closing station;

a plurality of second limiting mechanisms for contacting the limiting member and providing a first pressure to the limiting member along a first direction, the second limiting mechanisms being formed on one side of the annular supporting member or one side of the first limiting mechanisms, the first direction being an arrangement direction of the annular supporting member and the limiting member;

the third limiting mechanisms can reciprocate in the first direction to provide second pressure opposite to the first pressure direction for the limiting part, so that the limiting part is fixed on the periphery of the roller.

2. The clamping tool according to claim 1, wherein the third limiting mechanism comprises an elastic telescopic rod and a clamping assembly, the elastic telescopic rod penetrates through the annular supporting member, the clamping assembly is arranged at the end part of the elastic telescopic member close to the limiting member, and the elastic telescopic rod can stretch along the direction perpendicular to the surrounding direction of the annular supporting member so as to drive the clamping assembly to provide the second pressure to the limiting member.

3. The clamping tool according to claim 2, wherein the elastic telescopic rod comprises a rod body, a first elastic member and a stopping portion, the rod body penetrates through the annular supporting member along a direction perpendicular to the surrounding direction of the annular supporting member, the rod body is provided with a first end and a second end which are located on two sides of the annular supporting member, the clamping component is arranged at the first end and surrounds the second limiting mechanism to form the accommodating space, the stopping portion is arranged at the second end, the first elastic member is sleeved at the second end, and when the limiting member is clamped in the accommodating space, the first elastic member is in a compressed state.

4. The clamping tool according to claim 3, wherein the clamping assembly comprises a base body and a clamping jaw arranged on one side of the base body, which is far away from the annular supporting member, the base body is connected to the first end of the rod body, and the clamping jaw comprises a bending part which is bent towards one side of the annular supporting member so as to clamp the limiting member in the accommodating space.

5. The clamping tool according to claim 4, wherein the clamping assembly further comprises a thread adjusting assembly, the jaw is slidably connected with the base body, the thread adjusting assembly comprises a thread adjusting piece and a second elastic piece, the thread adjusting piece penetrates through the base body along the direction from the outer surface to the inner surface of the annular supporting piece and abuts against the jaw, the second elastic piece is sleeved on the thread adjusting piece and located between the jaw and the base body, and when the limiting piece is clamped in the accommodating space, the second elastic piece is in a compressed state.

6. The clamping tool according to claim 1, wherein the annular supporting member comprises a first half ring and a second half ring, a first end of the first half ring and a first end of the second half ring are rotatably connected, a clamping member is arranged at a second end of the first half ring, a clamping matching member is arranged at a second end of the second half ring, and the clamping member and the clamping matching member are matched to enable the annular supporting member to be switched between the closing station and the opening station.

7. The clamping tool of claim 6, wherein the first half ring comprises a first sub half ring and a second sub half ring which are arranged oppositely along the first direction, and the first sub half ring and the second sub half ring are fixedly connected;

the second half ring comprises a third sub half ring and a fourth sub half ring which are oppositely arranged along the first direction, and the third sub half ring and the fourth sub half ring are fixedly connected.

8. The clamping fixture of claim 6, wherein the annular support further comprises a positioning member disposed on the first half ring or the second half ring, and the positioning member is used to connect the clamping fixture to an object to be fixed.

9. The clamping tool according to claim 1, wherein the first limiting mechanism is a limiting rod, and the extending direction of the limiting rod is perpendicular to the surrounding direction of the annular supporting piece.

10. The clamping tool according to claim 9, wherein the second limiting mechanism is an end surface of the limiting rod facing one side of the limiting member, and the end surface is perpendicular to the first direction.

11. A clamping device, characterized by comprising a clamping tool according to any one of claims 1-10; further comprising:

a frame;

the screw linear mechanism is installed in the rack and comprises a screw and a sliding block, the sliding block is in threaded connection with the screw, the sliding block is provided with a mounting groove for accommodating the clamping tool, the sliding block is provided with a protrusion located in the mounting groove, and the protrusion is used for being matched with the clamping tool to limit the position of the clamping tool.

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