Claw changer for clamping expansion sleeve

Abstract

The utility model relates to a claw changer for clamping an expansion sleeve, which comprises a claw changer main body, a driving seat capable of sliding up and down is arranged in the middle of the lower end of the claw changer main body, the driving seat is cylindrical, a circle of annular groove is arranged on the outer side wall of the driving seat, and the outer side wall of the driving seat is provided with a clamping groove. A plurality of clamping jaw blocks which are rotatably mounted are uniformly arranged at the lower end of the jaw changer main body around the driving seat, a plurality of inserting columns are mounted at the lower end of each clamping jaw block, the free ends of the clamping jaw blocks are inserted into the annular groove, and a handle barrel is mounted in the middle of the upper end of the jaw changer main body; the handle barrel is provided with a grab handle and a movable handle which is rotatably connected with the grab handle, a lifting barrel which slides up and down is arranged in the handle barrel, a connecting rod is rotatably arranged in the upper part of the lifting barrel, and the lower end of the connecting rod is rotatably connected with the upper part of the rotating end of the movable handle. According to the tool, the expansion sleeve can be conveniently and easily clamped and placed, the operation time is short, the installation efficiency is high, damage to the expansion sleeve is small, the handheld design is adopted, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion sleeve installation, in particular to a claw changing device used for clamping an expansion sleeve. Background Art

[0002] When machining parts with an outer or inner circle, a chuck is usually used to clamp the outer or inner circle of the part to ensure the machining accuracy of the part. Among them, an expansion sleeve needs to be installed inside the chuck, and there is currently no special tool for clamping the expansion sleeve, resulting in low installation efficiency of the expansion sleeve and easy damage to the expansion sleeve. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a claw changing device for clamping an expansion sleeve, which can conveniently and easily clamp and place the expansion sleeve, has a short operation time, high installation efficiency, less damage to the expansion sleeve, and adopts a handheld design for easy operation.

[0004] The technical solution adopted by the utility model to solve its technical problems is: to provide a claw changer for clamping an expansion sleeve, including a claw changer main body, a driving seat which can slide up and down is installed in the middle of the lower end of the claw changer main body, the driving seat is cylindrical, and a circle of annular grooves are arranged on the outer wall of the driving seat, a plurality of rotatably installed clamping blocks are evenly arranged around the driving seat at the lower end of the claw changer main body, a plurality of plug posts are installed at the lower end of each clamping block, and the free end of the clamping block is inserted into the annular groove, a handle cylinder is installed in the middle of the upper end of the claw changer main body, a gripping handle and a rotatably connected movable handle are provided on the handle cylinder, a lifting cylinder which slides up and down is installed inside the handle cylinder, a connecting rod is rotatably installed in the upper part of the lifting cylinder, and the lower end of the connecting rod is rotatably connected to the upper part of the rotating end of the movable handle.

[0005] As a supplement to the technical solution described in the utility model, the lower part of the rotating end of the movable handle is rotatably connected to the inner wall of the handle tube through a rotating shaft 1, and vertical through holes for the rotating shaft 1 to pass through are provided on both sides of the lifting tube.

[0006] As a supplement to the technical solution described in the utility model, a plurality of long grooves are evenly arranged around the driving seat at the lower end of the claw changer body, and the end of the clamping jaw block away from the driving seat is rotatably connected to the inner wall of the long groove through a second rotating shaft.

[0007] As a supplement to the technical solution described in the utility model, a hemispherical protrusion is provided at the lower end of the plug post.

[0008] As a supplement to the technical solution described in the utility model, a return spring is installed between the movable handle and the lower part of the handle tube.

[0009] As a supplement to the technical solution described in the utility model, the claw changer body and the handle tube are fixed by fasteners.

[0010] As a supplement to the technical solution described in the utility model, a connecting column is provided in the middle of the upper end of the driving seat, and the connecting column is fixed to the lifting cylinder by fasteners.

[0011] As a supplement to the technical solution described in the utility model, an opening for the movable handle to move is opened on one side of the lifting cylinder, and a slope is provided on the top of the opening. An unlocking button is rotatably installed inside the movable handle, and an extrusion part cooperating with the slope is provided on the upper end of the unlocking button.

[0012] As a supplement to the technical solution described in the utility model, an arc through hole is opened in the middle of the unlocking button, and a limit pin fixed to the movable handle is installed in the arc through hole.

[0013] Beneficial effects: The utility model relates to a claw changing device for clamping an expansion sleeve, which can conveniently and easily clamp and place the expansion sleeve, has a short operation time, high installation efficiency, less damage to the expansion sleeve, and adopts a handheld design for easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model at different angles;

[0016] Figure 3 It is a cross-sectional view of the utility model in a released state;

[0017] Figure 4 It is a structural schematic diagram of the movable handle, the driving seat and the lifting cylinder described in the utility model;

[0018] Figure 5 It is a cross-sectional view of the utility model in a folded state;

[0019] Figure 6 This is a structural schematic diagram of the utility model inserting the expansion sleeve;

[0020] Figure 7 It is a structural schematic diagram of the expansion sleeve described in the utility model.

[0021] Illustration: 1. Claw changer body, 2. Handle cylinder, 3. Grip, 4. Movable handle, 5. Unlocking button, 6. Rotating shaft 1, 7. Long groove, 8. Claw block, 9. Insert column, 10. Rotating shaft 2, 11. Driving seat, 12. Hemispherical protrusion, 13. Annular groove, 14. Lifting cylinder, 15. Connecting rod, 16. Return spring, 17. Fastener, 18. Vertical through hole, 19. Connecting column, 20. Opening, 21. Inclined surface, 22. Extrusion part, 23. Limit pin, 24. Arc through hole, 25. Expansion sleeve, 26. Plug hole. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0023] The embodiment of the utility model relates to a claw changing device for clamping a sleeve, such as Figure 1-7 As shown, it includes a claw changer body 1, a driving seat 11 which can slide up and down is installed in the middle of the lower end of the claw changer body 1, and the driving seat 11 is cylindrical. The outer wall of the driving seat 11 is arranged with a circle of annular grooves 13. A plurality of rotatably installed jaw blocks 8 are evenly arranged around the driving seat 11 at the lower end of the claw changer body 1, and a plurality of plug columns 9 are installed at the lower end of each jaw block 8. The free end of the jaw block 8 is inserted into the annular groove 13. A handle cylinder 2 is installed in the middle of the upper end of the claw changer body 1, and a gripping handle 3 and a rotatably connected movable handle 4 are provided on the handle cylinder 2. A lifting cylinder 14 which slides up and down is installed inside the handle cylinder 2, and a connecting rod 15 is rotatably installed in the upper part of the lifting cylinder 14, and the lower end of the connecting rod 15 is rotatably connected to the upper part of the rotating end of the movable handle 4.

[0024] An opening 20 for the movable handle 4 to move is provided on one side of the lifting cylinder 14 , and a slope 21 is provided on the top of the opening 20 . An unlocking button 5 is rotatably installed inside the movable handle 4 , and an extrusion portion 22 cooperating with the slope 21 is provided on the upper end of the unlocking button 5 .

[0025] An arc through hole 24 is provided in the middle of the unlocking button 5, and a limit pin 23 fixed to the movable handle 4 is installed in the arc through hole 24; the limit pin 23 cooperates with the arc through hole 24 to realize the rotation of the unlocking button 5 within a certain range.

[0026] like Figure 1As shown, the claw changer is in a normal released state, the claw block 8 at the lower end of the claw changer body 1 is arranged horizontally, and the plug post 9 at the lower end of the claw block 8 is arranged vertically. The plug post 9 at the lower end of the claw block 8 is inserted into the corresponding plug hole 26 at the upper end of the expansion sleeve 25, and then the grip handle 3 and the movable handle 4 are held tightly, and the drive seat 11 and the lifting cylinder 14 are controlled to slide upward so that the lower ends of several plug posts 9 are retracted inward, so that the expansion sleeve 25 is retracted inward (the claw changer is in the retracted state, as shown in 5). When the connecting rod 15 is in a vertical state, the movable handle 4 is close to the grip handle 3 and is in a locked state. Even if the movable handle 4 is released, several plug posts 9 remain stationary. Then the retracted expansion sleeve 25 is placed in the corresponding device, and the unlocking button 5 is pressed. The extrusion part 22 at the upper end of the unlocking button 5 squeezes the inclined surface 21, so that the grip handle 3 and the movable handle 4 are separated to complete the unlocking, and several plug posts 9 release the expansion sleeve 25.

[0027] When the driving seat 11 and the lifting cylinder 14 slide upward, the free end of the clamping claw block 8 is lifted upward, and the lower ends of the plurality of plug posts 9 move inwardly.

[0028] The lower part of the rotating end of the movable handle 4 is rotatably connected to the inner wall of the handle tube 2 through a rotating shaft 6, and vertical through holes 18 for the rotating shaft 6 to pass through are provided on both sides of the lifting tube 14.

[0029] The lower end of the jaw changer body 1 is evenly arranged with a plurality of long grooves 7 around the driving seat 11 , and the end of the jaw block 8 away from the driving seat 11 is rotatably connected to the inner wall of the long groove 7 through a second rotating shaft 10 .

[0030] The lower end of the plug post 9 is provided with a hemispherical protrusion 12 , which can not only avoid collision but also facilitate insertion into the plug hole 26 at the upper end of the expansion sleeve 25 .

[0031] A return spring 16 is installed between the movable handle 4 and the lower part of the handle tube 2.

[0032] The claw changer body 1 and the handle cylinder 2 are fixed by a fastener 17. A connecting column 19 is provided in the middle of the upper end of the driving seat 11, and the connecting column 19 and the lifting cylinder 14 are fixed by a fastener 17. The fastener 17 is generally a bolt.

[0033] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0034] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0035] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0036] The above is a detailed introduction to a claw changer for clamping an expansion sleeve provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A claw changing device for clamping a sleeve, comprising a claw changing device body (1), characterized in that: A driving seat (11) that can slide up and down is installed in the middle of the lower end of the claw changer body (1), and the driving seat (11) is cylindrical. The outer wall of the driving seat (11) is arranged with a circle of annular grooves (13). A plurality of rotatably mounted clamping blocks (8) are evenly arranged around the driving seat (11) at the lower end of the claw changer body (1), and a plurality of plug posts (9) are installed at the lower end of each clamping block (8). The free end of the clamping block (8) is inserted into the annular groove (13). A handle tube (2) is installed in the middle of the upper end of the claw changer body (1), and a gripping handle (3) and a rotatably connected movable handle (4) are provided on the handle tube (2). A lifting cylinder (14) that can slide up and down is installed inside the handle tube (2), and a connecting rod (15) is rotatably installed in the upper part of the lifting cylinder (14). The lower end of the connecting rod (15) is rotatably connected to the upper part of the rotating end of the movable handle (4).

2. A claw changing device for clamping a sleeve according to claim 1, characterized in that: The lower part of the rotating end of the movable handle (4) is rotatably connected to the inner wall of the handle cylinder (2) through a rotating shaft (6), and vertical through holes (18) for the rotating shaft (6) to pass through are provided on both sides of the lifting cylinder (14).

3. A claw changing device for clamping a sleeve according to claim 1, characterized in that: The lower end of the jaw changing device body (1) is evenly arranged with a plurality of long grooves (7) around the driving seat (11), and the end of the jaw block (8) away from the driving seat (11) is rotatably connected to the inner wall of the long groove (7) via a second rotating shaft (10).

4. A claw changing device for clamping a sleeve according to claim 1, characterized in that: A hemispherical protrusion (12) is provided at the lower end of the plug post (9).

5. The claw changing device for clamping the expansion sleeve according to claim 1, characterized in that: A return spring (16) is installed between the movable handle (4) and the lower part of the handle tube (2).

6. A claw changing device for clamping a sleeve according to claim 1, characterized in that: The claw changing device body (1) and the handle tube (2) are fixed by a fastener (17).

7. The claw changing device for clamping a sleeve according to claim 1, characterized in that: A connecting column (19) is provided in the middle of the upper end of the driving seat (11), and the connecting column (19) is fixed to the lifting cylinder (14) by a fastener (17).

8. The claw changing device for clamping a sleeve according to claim 1, characterized in that: An opening (20) for the movable handle (4) to move is provided on one side of the lifting cylinder (14), and a slope (21) is provided on the top of the opening (20). An unlocking button (5) is rotatably installed inside the movable handle (4), and an extrusion portion (22) cooperating with the slope (21) is provided on the upper end of the unlocking button (5).

9. A claw changing device for clamping a sleeve according to claim 8, characterized in that: A circular arc through hole (24) is provided in the middle of the unlocking button (5), and a limiting pin (23) fixed to the movable handle (4) is installed in the circular arc through hole (24).

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