CN216857090U

CN216857090U - Clamping device

Info

Publication number: CN216857090U
Application number: CN202122609971.4U
Authority: CN
Inventors: 朱东展; 陈文彬; 谢杨宇; 丘焯平
Original assignee: Guangdong Zeheng Intelligent Technology Co ltd
Current assignee: Guangdong Zeheng Intelligent Technology Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-07-01
Anticipated expiration: 2031-10-28

Abstract

The utility model provides a clamping device, which comprises a first mechanism and a second mechanism which are arranged on a base in a spaced and opposite mode, wherein the first mechanism and the second mechanism respectively comprise a clamping head and an isolation sleeve, the first mechanism and the second mechanism can drive the clamping heads to move relatively and clamp and fix a workpiece, and the isolation sleeve can extend out relative to the clamping heads and shield the end parts of the workpiece; the clamping device has the advantages of reasonable structure and convenience in use.

Description

Clamping device

Technical Field

The utility model belongs to the technical field of spraying equipment, and particularly relates to a clamping device.

Background

The powder spraying is that a high-voltage cathode is connected to a metal flow guide mark at the head of a spray gun by utilizing the principle of a high-voltage electrostatic corona electric field, and a sprayed workpiece is grounded to form an anode, so that a stronger electrostatic electric field is formed between the spray gun and the workpiece. When compressed air as carrier gas is used to deliver powder paint from powder supply barrel to guide rod of spray gun through powder tube, the corona discharge generated by high-voltage negative electrode is connected to guide rod to generate dense negative charge, so that the powder paint is charged with negative charge and enters into electrostatic field with very high electric field strength. The spraying effect of the powder spraying is superior to that of a paint spraying process in the aspects of mechanical strength, adhesive force, corrosion resistance, aging resistance and the like, so the powder spraying is widely applied to the production and processing fields of automobile spraying, furniture spraying and the like.

In the mechanical production and manufacturing, it is often necessary to perform spraying operation on a cylindrical workpiece, for example, to perform spraying operation on a transmission shaft, in the prior art, when the cylindrical workpiece is subjected to spraying operation, the cylindrical workpiece is usually clamped and fixed by using a clamping device, and then surface spraying is performed along the length direction of the workpiece, however, the clamping device in the prior art has the problem of inconvenient use. Particularly, to the cylindrical work piece especially transmission shaft, its both ends often are provided with drive end (like the spline), and further, the axle head (the spline) of transmission shaft need not carry out the spraying, and clamping device among the prior art can not carry out effectual sheltering from to its both ends (the spline) when the centre gripping transmission shaft to avoid the axle head of transmission shaft to be covered by coating when the spraying, to such problem, mainly there are two kinds of solution in the prior art: one way is to remove the coating covered on the shaft end through other procedures after finishing the spraying; the other mode is that before spraying, the shaft end of the transmission shaft is wrapped with an isolating film, and after spraying is finished, the isolating film is removed. By the mode, the treatment process of the columnar workpiece is increased, and the spraying efficiency of the workpiece is reduced; furthermore, the shaft end of the transmission shaft can be isolated through the clamping device during spraying operation of the transmission shaft, and compared with the mode that an isolation film needs to be wrapped on the shaft end or the paint covered on the shaft end needs to be removed independently in the prior art, the use convenience of the clamping device and the spraying efficiency of workpieces can be effectively improved.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a clamping device with a reasonable structure and convenient use.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a clamping device comprises a first mechanism and a second mechanism which are arranged on a base in an interval and opposite mode, wherein the first mechanism and the second mechanism respectively comprise a clamping head and an isolation sleeve, the first mechanism and the second mechanism can drive the clamping heads to move relatively and clamp and fix a workpiece, and the isolation sleeve can extend out of the clamping heads and shield the end portions of the workpiece.

As a further improvement of the clamping device, the first mechanism further comprises a first telescopic mechanism and a second telescopic mechanism, the isolation sleeve is sleeved outside the clamping head, one end of the first telescopic mechanism is connected with the clamping head, the other end of the first telescopic mechanism is connected with the base, one end of the second telescopic mechanism is connected with the isolation sleeve, the other end of the second telescopic mechanism is connected with the base, and the structure of the second mechanism is the same as that of the first mechanism.

As a further improvement of the clamping device, the first mechanism further comprises a rotating mechanism, the rotating mechanism is connected with the base, and is in transmission connection with the clamping head and/or the isolation sleeve, and the rotating mechanism is used for driving the clamping head and/or the isolation sleeve to rotate.

As a further improvement of the clamping device, the first mechanism further comprises a first transmission shaft and a second transmission shaft, the second transmission shaft is arranged in a hollow manner, the second transmission shaft is sleeved outside the first transmission shaft, and the second transmission shaft is rotatably connected with the base;

one end of the first transmission shaft is connected with the clamping head, the other end of the first transmission shaft is connected with the first telescopic mechanism, one end of the second transmission shaft is connected with the isolation sleeve, and the other end of the second transmission shaft is connected with the second telescopic mechanism.

As a further improvement of the clamping device, the rotating mechanism comprises a driving motor, a driving wheel and a driven wheel, the driving wheel is connected with a transmission shaft of the driving motor, the driven wheel is connected with the second transmission shaft, the driving wheel is in transmission connection with the driven wheel, the driving motor is connected with the base, the first transmission shaft is in transmission connection with the second transmission shaft, and the first transmission shaft and the second transmission shaft can respectively move axially relative to each other;

or, the rotating mechanism comprises a driving motor, a driving wheel and a driven wheel, the driving wheel is connected with a driving shaft of the driving motor, the driven wheel is connected with the first transmission shaft, the driving wheel is in transmission connection with the driven wheel, the driving motor is connected with the base, the first transmission shaft is in rotation connection with the second transmission shaft, and the first transmission shaft and the second transmission shaft can respectively move axially relative to each other.

As a further improvement of the clamping device, the first mechanism further comprises a first sliding seat, the first sliding seat is connected with the base in a sliding manner, the driving motor and the first telescopic mechanism are connected with the first sliding seat, the second transmission shaft is connected with the first sliding seat in a rotating manner, one end of the second telescopic mechanism is connected with the first sliding seat, and the other end of the second telescopic mechanism is connected with the base.

As a further improvement on the clamping device, the first mechanism further includes a second sliding seat and an adjusting mechanism, the second sliding seat is located between the first sliding seat and the base, the first sliding seat is connected with the second sliding seat in a sliding manner, the second sliding seat is connected with the base in a sliding manner, one end of the second telescopic mechanism is connected with the first sliding seat, the other end of the second telescopic mechanism is connected with the second sliding seat, the adjusting mechanism is connected with the base, the adjusting mechanism is connected with the second sliding seat in a transmission manner, and the adjusting mechanism is used for driving the second sliding seat to perform reciprocating movement relative to the base.

As a further improvement to the clamping device, the adjusting mechanism includes an adjusting motor, a screw body and a screw nut, the screw nut is screwed with the screw body, the screw body is rotatably connected with the base, the adjusting motor is fixedly connected with the base, the adjusting motor is in transmission connection with the screw body, and the screw nut is fixedly connected with the second sliding seat.

As a right further improvement of the clamping device, the adjusting mechanism includes an adjusting motor, a screw body, a screw nut and a third transmission shaft, the first mechanism and the second mechanism are both provided with the screw body and the screw nut, the screw nut is screwed with the screw body, the screw body is rotatably connected with the base, two ends of the third transmission shaft are respectively in transmission connection with the screw body of the first mechanism and the second mechanism, the adjusting motor is fixedly connected with the base, the first mechanism and the second mechanism share the adjusting motor, and the adjusting motor is in transmission connection with the screw body of the first mechanism or the second mechanism.

As a further improvement of the clamping device, the first transmission shaft is hollow, the second transmission shaft is further provided with an air inlet and an air outlet, the air outlet is close to the clamping head, and the air inlet is located on the second transmission shaft.

Compared with the prior art, the utility model has the following beneficial effects: through having set up the spacer sleeve on clamping device, after the column work piece (like the transmission shaft) that the spraying was treated to clamping device carries out the centre gripping fixed, the spacer sleeve stretches out and shelters from the tip formation of work piece for the holding head to avoided the both ends of work piece to covered by coating, promptly, avoided needing to wrap up alone or coating removes the process to the both ends of work piece in the traditional mode, and then effectively improved the production efficiency of work piece, also improved the convenience that clamping device used simultaneously.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments of the utility model, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the utility model.

FIG. 1 is a schematic view of the overall structure of the clamping device of the present invention;

FIG. 2 is a schematic structural view of a first mechanism or a second mechanism according to the present invention;

FIG. 3 is a partially exploded view of the first or second mechanism of the present invention;

fig. 4 is a schematic overall structure diagram of another embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and specific examples so that those skilled in the art can better understand the present invention and can implement the present invention, but the examples are not intended to limit the present invention, and in the present examples, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like as used herein are for illustrative purposes only.

As shown in fig. 1-4, the present embodiment provides a clamping device, which includes a first mechanism 2 and a second mechanism 3 spaced apart from and disposed opposite to each other on a base 1, that is, the first mechanism 2 and the second mechanism 3 are both connected to the base 1 by bolts; the first mechanism 2 and the second mechanism 3 both comprise a clamping head 21 and an isolation sleeve 22, and further, the isolation sleeves 22 with different diameters can be replaced according to workpieces to be sprayed with different diameters; the first mechanism 2 and the second mechanism 3 can drive the clamping head 21 to move relatively and form clamping fixation on the workpiece, and the isolation sleeve 22 can extend out relative to the clamping head 21 and form a shield on the end part of the workpiece. Further, the first mechanism 2 and the second mechanism 3 have the same structure. Specifically, the workpiece to be sprayed is placed between the first mechanism 2 and the second mechanism 3, then the clamping heads 21 on the first mechanism 2 and the second mechanism 3 are respectively driven to move in opposite directions until two ends of the workpiece to be sprayed are tightly abutted, so that the workpiece (the transmission shaft to be sprayed) can be clamped, and further, when the two ends of the workpiece to be sprayed do not need to be sprayed, the isolating sleeve 22 is driven to extend out and be sleeved on the end part of the workpiece through the first mechanism 2 and the second mechanism 3, so that the end part of the workpiece to be sprayed is wrapped or shielded, and the coating is prevented from being sprayed on the end part of the workpiece, for example, a spline of the transmission shaft. Of course, the diameter of the spacer sleeve 22 may be matched to work pieces of different diameters, for example, the diameter of the work piece is 100MM, and the spacer sleeve 22 may have an inner diameter of 106MM, 108MM, or 100 MM.

As shown in fig. 2-3, in a preferred embodiment, the first mechanism 2 further includes a first telescopic mechanism 23 and a second telescopic mechanism 24, the isolation sleeve 22 is sleeved outside the clamping head 21, one end of the first telescopic mechanism 23 is connected to the clamping head 21, the other end is connected to the base 1, one end of the second telescopic mechanism 24 is connected to the isolation sleeve 22, the other end is connected to the base 1, and the structure of the second mechanism 3 is the same as that of the first mechanism 2; the first telescopic mechanism 23 and the second telescopic mechanism 24 in this embodiment are all any one of an air cylinder, a hydraulic cylinder or an electric cylinder, that is, the first telescopic mechanism 23 also drives the reciprocating motion of the clamping head 21, so as to realize clamping and fixing or releasing of the workpiece; the reciprocating motion of the distance sleeve 22 is driven by the second telescoping mechanism 24 to wrap or shield the end of the workpiece.

As shown in fig. 2-3, in a preferred embodiment, the first mechanism 2 further includes a rotation mechanism 4, the rotation mechanism 4 is connected to the base 1, the rotation mechanism 4 is in transmission connection with the holding head 21 and/or the isolation sleeve 22, and the rotation mechanism 4 is used for driving the holding head 21 and/or the isolation sleeve 22 to rotate; the clamped workpiece can be further driven to rotate through the rotating mechanism 4, so that the workpiece can be conveniently sprayed, namely, a spray gun for spraying can be moved to and fro only relative to the axial direction of the workpiece without moving a position.

As shown in fig. 2-3, in the preferred embodiment, the first mechanism 2 further comprises a first transmission shaft 25 and a second transmission shaft 26; the second transmission shaft 26 is arranged in a hollow manner, the second transmission shaft 26 is sleeved outside the first transmission shaft 25, and the second transmission shaft 26 is rotatably connected with the base 1 through a bearing seat; further, one end of the first transmission shaft 25 is fixedly connected with the clamping head 21 through a bolt, the other end is connected with the first telescopic mechanism 23, one end of the second transmission shaft 26 is fixedly connected with the isolation sleeve 22 through a bolt, and the other end is connected with the second telescopic mechanism 24. Further, the rotating mechanism 4 comprises a driving motor 41, a driving wheel 42 and a driven wheel 43, the driving wheel 42 is connected with a driving shaft of the driving motor 41, the driven wheel 43 is connected with the second transmission shaft 26, the driving wheel 42 and the driven wheel 43 form transmission connection through a synchronous belt, the driving motor 41 is connected with the base 1, the first transmission shaft 25 is in transmission connection with the second transmission shaft 26, and the first transmission shaft 25 and the second transmission shaft 26 can respectively move axially relative to each other; alternatively, the rotating mechanism 4 includes a driving motor 41, a driving wheel 42 and a driven wheel 43, the driving wheel 42 is connected with a transmission shaft of the driving motor 41, the driven wheel 43 is connected with the first transmission shaft 25, the driving wheel 42 is connected with the driven wheel 43 in a transmission manner, the driving motor 41 is connected with the base 1, the first transmission shaft 25 is rotatably connected with the second transmission shaft 26, and the first transmission shaft 25 and the second transmission shaft 26 can respectively move axially relative to each other. In the present embodiment, the driven wheel 43 is in transmission connection with the second transmission shaft 26, specifically, an internal spline or an internal spline bushing is arranged in the second transmission shaft 26, the internal spline bushing is fixed with the second transmission shaft 26, while the surface of the first transmission shaft 25 is provided with an external spline along the length direction thereof, the internal spline and the external spline are mutually matched to form a transmission relationship between the first transmission shaft 25 and the second transmission shaft 26, and simultaneously, the first transmission shaft 25 and the second transmission shaft 26 can slide along the common axial direction thereof; that is, the clamping of the workpiece and the shielding of the end portion thereof are formed, respectively.

As shown in fig. 2-3, in a preferred embodiment, the first mechanism 2 further includes a first sliding seat 5, the first sliding seat 5 is slidably connected to the base 1 through a guide rail, wherein the driving motor 41 and the first telescopic mechanism 23 are both connected to the first sliding seat 5, the second transmission shaft 26 is rotatably connected to the first sliding seat 5 through a bearing seat, and one end of the second telescopic mechanism 24 is connected to the first sliding seat 5, and the other end is fixedly connected to the base 1. Further, the first mechanism 2 further includes a second sliding seat 51 and an adjusting mechanism 52, the second sliding seat 51 is located between the first sliding seat 5 and the base 1, the first sliding seat 5 and the second sliding seat 51 form a sliding connection through a sliding rail, the second sliding seat 51 and the base 1 form a sliding connection through a sliding rail, one end of the second telescoping mechanism 24 is connected with the first sliding seat 5, the other end of the second telescoping mechanism is connected with the second sliding seat 51, the adjusting mechanism 52 is connected with the base 1, the adjusting mechanism 52 is in transmission connection with the second sliding seat 51, and the adjusting mechanism 52 is used for driving the second sliding seat 51 to reciprocate relative to the base 1. Specifically, by providing the first sliding seat 5 and the second sliding seat 51, the relative movement between the clamping head 21 and the isolation sleeve 22 can be realized, that is, when the adjusting mechanism 52 drives the second sliding seat 51 to move relative to the base 1, the synchronous movement of the first sliding seat 5 and the components such as the clamping head 21 and the isolation sleeve 22 on the first sliding seat 5 can be synchronously driven, that is, the first mechanism 2 and the second mechanism 3 can be flexibly adjusted for workpieces with different lengths. For example, when the tool used is relatively short and is shorter than the maximum clamping stroke of the clamping heads 21 on the first mechanism 2 and the second mechanism 3, the second sliding seats 51 on the first mechanism 2 and the second mechanism 3 can be driven to move relative to each other by the adjusting mechanism 52, so that the workpiece can be effectively clamped and fixed; similarly, when the end of the workpiece needs to be shielded, the second telescoping mechanism 24 drives the first sliding seat 5 to move along the second sliding seat 51, so that the isolation sleeve 22 can be sleeved on the end of the workpiece, and the coating is prevented from being sprayed on one end or two ends of the workpiece during spraying.

As shown in fig. 2 to 3, in a preferred embodiment, the adjusting mechanism 52 includes an adjusting motor 53, a lead screw body 54 and a lead screw nut 55, the lead screw nut 55 is screwed with the lead screw body 54, the lead screw body 54 is rotatably connected with the base 1, the adjusting motor 53 is fixedly connected with the base 1, the adjusting motor 53 is in transmission connection with the lead screw body 54, and the lead screw nut 55 is fixedly connected with the second sliding seat 51. The adjustment motor 53 converts the rotation motion into a linear motion of the screw nut 55, and the second sliding base 51 is driven to move linearly in a straight line.

As shown in fig. 3-4, in another embodiment, the adjusting mechanism 52 includes an adjusting motor 53, a screw body 54, a screw nut 55, and a third transmission shaft 56, the screw body 54 and the screw nut 55 are disposed on the first mechanism 2 and the second mechanism 3, the screw nut 55 is screwed with the screw body 54, the screw body 54 is rotatably connected to the base 1, two ends of the third transmission shaft are respectively connected to the screw bodies 54 of the first mechanism 2 and the second mechanism 3 in a transmission manner, the adjusting motor 53 is fixedly connected to the base 1, the first mechanism 2 and the second mechanism 3 share the adjusting motor 53, and the adjusting motor 53 is connected to the screw body 54 of the first mechanism 2 or the second mechanism 3 in a transmission manner. Specifically, the synchronous relative movement or the reverse movement of the first mechanism 2 and the second mechanism 3 is realized by using only one adjusting motor 53, and of course, in this embodiment, the threads of the screw body 54 of the first mechanism 2 and the second mechanism 3 are opposite to each other. The manufacturing cost of the clamping device can be reduced by reducing the amount of the adjustment motor 53 used.

As shown in fig. 2-3, in the preferred embodiment, the first transmission shaft 25 is hollow, and the second transmission shaft 26 is further provided with an air inlet 28 and an air outlet 27, respectively, the air outlet 27 is located near the clamping head 21, and the air inlet 28 is located on the second transmission shaft 26. By introducing compressed air into the first transmission shaft 25, after the compressed air outlet 27 is sprayed out, air isolation can be formed between the gap between the clamping head 21 and the isolation sleeve 22, thereby further preventing the powder coating from entering between the first transmission shaft 25 and the second transmission shaft 26 to cause motion jam or abrasion.

In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the terms "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.

Claims

1. A clamping device, characterized by: the clamping device comprises a first mechanism and a second mechanism which are arranged on a base at intervals and oppositely, wherein the first mechanism and the second mechanism respectively comprise a clamping head and an isolation sleeve, the first mechanism and the second mechanism can drive the clamping heads to move relatively and clamp and fix a workpiece, and the isolation sleeve can extend out relative to the clamping heads and shield the end parts of the workpiece.

2. The clamping device of claim 1, wherein: the first mechanism further comprises a first telescopic mechanism and a second telescopic mechanism, the isolation sleeve is sleeved outside the clamping head, one end of the first telescopic mechanism is connected with the clamping head, the other end of the first telescopic mechanism is connected with the base, one end of the second telescopic mechanism is connected with the isolation sleeve, the other end of the second telescopic mechanism is connected with the base, and the structure of the second mechanism is the same as that of the first mechanism.

3. The clamping device of claim 2, wherein: the first mechanism further comprises a rotating mechanism, the rotating mechanism is connected with the base and in transmission connection with the clamping head and/or the isolation sleeve, and the rotating mechanism is used for driving the clamping head and/or the isolation sleeve to rotate.

4. A clamping device according to claim 3, characterised in that: the first mechanism further comprises a first transmission shaft and a second transmission shaft, the second transmission shaft is arranged in a hollow mode, the second transmission shaft is sleeved outside the first transmission shaft, and the second transmission shaft is rotatably connected with the base;

5. The clamping device of claim 4, wherein: the rotating mechanism comprises a driving motor, a driving wheel and a driven wheel, the driving wheel is connected with a transmission shaft of the driving motor, the driven wheel is connected with the second transmission shaft, the driving wheel is in transmission connection with the driven wheel, the driving motor is connected with the base, the first transmission shaft is in transmission connection with the second transmission shaft, and the first transmission shaft and the second transmission shaft can respectively axially move relative to each other;

6. The clamping device of claim 5, wherein: the first mechanism further comprises a first sliding seat, the first sliding seat is connected with the base in a sliding mode, the driving motor and the first telescopic mechanism are connected with the first sliding seat, the second transmission shaft is connected with the first sliding seat in a rotating mode, one end of the second telescopic mechanism is connected with the first sliding seat, and the other end of the second telescopic mechanism is fixedly connected with the base.

7. The clamping device of claim 6, wherein: the first mechanism further comprises a second sliding seat and an adjusting mechanism, the second sliding seat is located between the first sliding seat and the base, the first sliding seat is in sliding connection with the second sliding seat, the second sliding seat is in sliding connection with the base, one end of a second telescopic mechanism is connected with the first sliding seat, the other end of the second telescopic mechanism is connected with the second sliding seat, the adjusting mechanism is connected with the base, the adjusting mechanism is in transmission connection with the second sliding seat, and the adjusting mechanism is used for driving the second sliding seat to perform reciprocating movement relative to the base.

8. The clamping device of claim 7, wherein: the adjusting mechanism comprises an adjusting motor, a screw rod body and a screw rod nut, the screw rod nut is screwed with the screw rod body, the screw rod body is rotatably connected with the base, the adjusting motor is fixedly connected with the base, the adjusting motor is in transmission connection with the screw rod body, and the screw rod nut is fixedly connected with the second sliding seat.

9. The clamping device of claim 7, wherein: the adjusting mechanism comprises an adjusting motor, a screw rod body, a screw rod nut and a third transmission shaft, the screw rod body and the screw rod nut are arranged on the first mechanism and the second mechanism, the screw rod nut is screwed with the screw rod body, the screw rod body is connected with the base in a rotating mode, two ends of the third transmission shaft are respectively connected with the first mechanism and the screw rod body of the second mechanism in a transmission mode, the adjusting motor is fixedly connected with the base, the first mechanism and the second mechanism share the adjusting motor, and the adjusting motor is in transmission connection with the first mechanism or the screw rod body in the second mechanism.

10. Clamping device according to any of claims 4-9, characterized in that: the first transmission shaft is arranged in a hollow mode, the second transmission shaft is further provided with an air inlet and an air outlet respectively, the air outlet is close to the clamping head, and the air inlet is located in the second transmission shaft.