CN210594229U

CN210594229U - Suction device

Info

Publication number: CN210594229U
Application number: CN201921620924.6U
Authority: CN
Inventors: 李炎林; 姚赞彬; 蔡海生
Original assignee: Guangdong Lyric Robot Automation Co Ltd
Current assignee: Guangdong Lyric Robot Automation Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-05-22
Anticipated expiration: 2029-09-26

Abstract

The application provides a suction means belongs to the rigging equipment field. The suction device comprises a base, a movable seat, a suction rod, a first driving device and a second driving device. The movable seat is movably arranged on the base. The suction rod is rotatably arranged on the movable seat. The first driving device is used for driving the movable seat to move back and forth relative to the base along a preset direction. The second driving device is used for driving the suction rod to rotate around a base axis arranged along the preset direction. The suction device with the structure has the advantages that the structure is simple, the suction rod is movable and rotatable, the angle adjustment of the workpiece to be assembled can be realized, the accurate assembly of the workpiece to be assembled is realized, and the application range is wide.

Description

Suction device

Technical Field

The application relates to the field of assembling equipment, in particular to a suction device.

Background

In the assembling process of the phaser, the spring seat is required to be sucked to a designated position through the sucking device, and then the spring seat, the lock pin and the lock pin spring are subjected to riveting assembly by means of riveting equipment. The existing suction device can only play a role in sucking workpieces, and the application range is small.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a suction device to improve the problem that the application scope of the existing suction device is small.

The embodiment of the application provides a suction device, which comprises a base, a movable seat, a suction rod, a first driving device and a second driving device;

the movable seat is movably arranged on the base;

the suction rod is rotatably arranged on the movable seat;

the first driving device is used for driving the movable seat to move back and forth relative to the base along a preset direction;

the second driving device is used for driving the suction rod to rotate around a base axis arranged along the preset direction.

In the technical scheme, the first driving device drives the movable seat to move back and forth along the preset direction relative to the base, so that the suction rod moves back and forth in the preset direction; the second driving device drives the suction rod to rotate around the base axis arranged along the preset direction, so that the suction rod rotates along the base axis arranged around the preset direction. Taking the assembly of the lock pin, the lock pin spring and the spring seat as an example, firstly, the lock pin spring is arranged in the lock pin, and the lock pin spring are put into a product; the first driving device drives the suction rod to move downwards along a preset direction, so that the suction rod sucks the spring seat; the first driving device drives the suction rod to move upwards along a preset direction, so that the suction rod is located at a position to be assembled; and finally, the suction rod is driven by the first driving device to move downwards along the preset direction, so that the spring seat enters a product and is subjected to riveting assembly. The suction device with the structure has the advantages that the structure is simple, the suction rod is movable and rotatable, the angle adjustment of the workpiece to be assembled can be realized, the accurate assembly of the workpiece to be assembled is realized, and the application range is wide.

In addition, the suction device provided by the embodiment of the application also has the following additional technical characteristics:

in some embodiments of the present application, the suction device further comprises a stopper;

the limiting piece is used for limiting the rotation angle of the suction rod around the base axis.

In the technical scheme, the limiting part is used for limiting the rotation angle of the suction rod around the base axis, so that the suction rod can only rotate for a preset angle, the workpiece to be assembled, which is sucked by the suction rod, can accurately reach the assembly position, and the assembly precision is improved.

In some embodiments of the present application, the limiting member is connected to the movable base, a connecting member is fixedly disposed on the suction rod, and the limiting member is located on a track of the connecting member around the base axis.

In the technical scheme, the connecting piece is fixedly arranged on the suction rod, so that when the suction rod rotates around the base axis under the action of the first driving device, the connecting piece can also rotate around the base axis along with the suction rod. Because the limiting part is connected to the movable seat, and the limiting part is positioned on the track of the connecting piece rotating around the base axis, namely, the connecting piece contacts with the limiting part in the process of rotating around the base axis. After the connecting piece contacts with the limiting piece, the limiting piece plays a role in preventing the connecting piece from rotating around the base axis, and therefore the purpose of limiting the rotating angle of the suction rod around the base axis is achieved. The limiting part with the structure is simple in structure and easy to realize.

In some embodiments of the present application, the position-limiting member is a telescopic structure.

Among the above-mentioned technical scheme, the locating part is extending structure, and through the flexible volume of adjusting the locating part, then can make the connecting piece contact with the locating part in the position of difference to the realization is adjusted the turned angle's of pole scope.

In some embodiments of the present application, the second driving device is connected to the connecting member, and the second driving device is configured to drive the connecting member to rotate around the base axis.

Among the above-mentioned technical scheme, second drive arrangement connects in the connecting piece, and second drive arrangement acts on the connecting piece promptly to rotate through the drive connecting piece and drive the pole rotation of inhaling. That is, the connecting member functions both for contact with the stopper and for connecting the second driving device and the suction rod.

In some embodiments of the present application, the second driving means comprises a first cylinder;

the cylinder body of the first cylinder is connected to the movable seat, and the piston rod of the first cylinder is connected to the connecting piece.

Among the above-mentioned technical scheme, second drive arrangement includes first cylinder, simple structure, easily realizes, and is with low costs.

In some embodiments of the present application, the piston rod of the first cylinder is connected to the connecting member by a pin;

the piston rod of the first cylinder is fixedly connected with the pin shaft, the connecting piece is provided with a strip-shaped groove, and the pin shaft is movably arranged in the strip-shaped groove.

Among the above-mentioned technical scheme, the piston rod and the lockpin fixed connection of first cylinder, the lockpin is movably set up in the bar inslot on the connecting piece, and the piston rod that has guaranteed first cylinder is flexible to be enabled connecting piece and suction rod normal rotation. When the piston rod of first cylinder is flexible, the lockpin will remove in the bar inslot, and connecting piece and suction rod rotate around the base axis simultaneously.

In some embodiments of the present application, the axis of the suction rod coincides with the base axis.

Among the above-mentioned technical scheme, the axis of inhaling the pole and the coincidence of base axis, inhale the pole promptly and rotate around self axis for the work piece of waiting to assemble that the pole absorption was inhaled has fine stability when following the rotation of inhaling the pole.

In some embodiments of the present application, the suction device further comprises a pressure regulating valve;

the pressure regulating valve is arranged on the base and used for regulating the suction pressure of the suction rod.

Among the above-mentioned technical scheme, can adjust the suction pressure of inhaling the pole through pressure regulating valve, can inhale the multiple type and wait to assemble the work piece.

In some embodiments of the present application, the suction device further comprises a pressure detection device;

the pressure detection device is arranged on the base and used for detecting the suction pressure of the suction rod.

According to the technical scheme, the suction pressure of the suction rod can be detected through the pressure detection device, and whether the suction rod successfully sucks the workpiece to be assembled can be judged according to the detected suction pressure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view of a suction device provided in the present application at a first viewing angle;

fig. 2 is a schematic structural view of a suction device provided in the present application at a second viewing angle;

fig. 3 is a schematic view showing the structure of the connector shown in fig. 1.

Icon: 200-a suction device; 10-a base; 11-a substrate; 12-side plates; 13-a guide rail; 20-a movable seat; 21-a first connection plate; 22-a second connecting plate; 23-a third connecting plate; 24-a slide block; 25-a bearing seat; 30-a suction rod; 40-a first drive; 50-a second drive; 51-a pin shaft; 80-a stop; 90-a connector; 91-a strip-shaped groove; 92-U-shaped card slot; 93-a threaded hole; 94-positioning holes; 95-inclined plane; 100-pressure regulating valve; 110-a pressure detection device; a-a preset direction; b-base axis.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

As shown in fig. 1, the present embodiment provides a suction device 200, which includes a base 10, a movable seat 20, a suction rod 30, a first driving device 40, and a second driving device 50. The movable seat 20 is movably disposed on the base 10. The suction rod 30 is rotatably provided to the movable base 20. The first driving device 40 is used for driving the movable seat 20 to reciprocate along the preset direction a relative to the base 10. The second driving means 50 is for driving the suction rod 30 to rotate about a base axis B arranged in the preset direction a.

The first driving device 40 drives the movable seat 20 to move back and forth along the preset direction a relative to the base 10, so as to realize the back and forth movement of the suction rod 30 along the preset direction a; the second driving means 50 drives the suction rod 30 to rotate about the base axis B arranged in the preset direction a, thereby achieving rotation of the suction rod 30 about the base axis B arranged in the preset direction a. Taking the assembly of the lock pin, the lock pin spring and the spring seat as an example, firstly, the lock pin spring is arranged in the lock pin, and the lock pin spring are put into a product; the first driving device 40 drives the suction rod 30 to move downwards along the preset direction A, so that the suction rod 30 sucks the spring seat; then the first driving device 40 drives the suction rod 30 to move upwards along the preset direction A, so that the suction rod 30 is located at the position to be assembled; then, by

The second driving device 50 drives the suction rod 30 to rotate for a certain angle around the base axis B arranged along the preset direction A so as to adjust the assembly angle of the spring seat, so that the spring seat meets the assembly condition, and finally the first driving device 40 drives the suction rod 30 to move downwards along the preset direction A so that the spring seat enters the product and is subjected to riveting assembly. The suction device 200 with the structure has a simple structure, the suction rod 30 can move and rotate, and the angle adjustment of the workpiece to be assembled can be realized, so that the workpiece to be assembled can be accurately assembled, and the application range is wide.

It should be noted that, when the suction rod 30 is used to suck the workpiece to be assembled, the suction rod 30 is externally connected to an air extractor, so that negative pressure is generated inside the suction rod 30, and the suction rod 30 generates suction force on the workpiece to be assembled.

The movable seat 20 and the base 10 may be connected in various ways as long as the movable seat 20 can move along the preset direction a relative to the base 10.

In this embodiment, as shown in fig. 2, the base 10 is provided with a guide rail 13, the movable seat 20 is provided with a slider 24, and the slider 24 and the guide rail 13 form a sliding fit to realize the movement of the movable seat 20. In other embodiments, the movable seat 20 and the base 10 can also be moved by other connection methods, for example, a T-shaped block is disposed on the movable seat 20, a T-shaped groove is disposed on the base 10, and the T-shaped block is slidably fitted in the T-shaped groove.

The base 10 may be of various configurations. Illustratively, with continued reference to fig. 1, the base 10 includes a base plate 11 and a side plate 12, wherein one end of the base plate 11 is connected to one end of the side plate 12 to form an L-shaped structure. The base plate 11 is a rectangular plate, and the side plate 12 is located at one end of the base plate 11 in the length direction. The base plate 11 and the side plate 12 may be fixedly connected, for example, they are welded together; the base plate 11 and the side plate 12 may also be detachably connected, for example, they are connected by screws.

The guide rail 13 is disposed along a length direction of the substrate 11, and the predetermined direction a is the length direction of the substrate 11.

Movable seat 20 may be of various configurations. Illustratively, the sliding seat 20 includes a first connecting plate 21, a second connecting plate 22 and a third connecting plate 23, wherein one end of the first connecting plate 21 is connected to one end of the second connecting plate 22, one end of the third connecting plate 23 is connected to one end of the second connecting plate 22 far away from the first connecting plate 21, the first connecting plate 21 and the third connecting plate 23 are perpendicular to the second connecting plate 22, and the first connecting plate 21 and the third connecting plate 23 are arranged oppositely. The first connecting plate 21 and the second connecting plate 22 may be fixedly connected, for example, they are welded together; the first connecting plate 21 and the second connecting plate 22 may also be detachably connected, for example, they are fixed together by screws. The third connecting plate 23 and the second connecting plate 22 may be fixedly connected, for example, they are welded together; the third connecting plate 23 and the second connecting plate 22 may also be detachably connected, for example, they are fixed together by screws.

Wherein a slider 24 forming a sliding fit with the guide rail 13 is mounted to the first connecting plate 21, illustratively, the slider 24 and the first connecting plate 21 are connected together by screws. After the sliding block 24 is in sliding fit with the guide rail 13, the first connecting plate 21 of the movable seat 20 is parallel to the base plate 11 of the base 10, and the second connecting plate 22 of the movable seat 20 is parallel to the side plate 12 of the base 10.

The first driving device 40 is used for driving the movable seat 20 to reciprocate along the preset direction a relative to the base 10. In this embodiment, the first driving device 40 includes an air cylinder, a cylinder body of the air cylinder is connected and fixed to the side plate 12 of the base 10, and a piston rod of the air cylinder is connected and fixed to the first connecting plate 21 of the movable seat 20. In this embodiment, the preset direction a is set to be vertical, and the movable seat 20 moves downward along the preset direction a when the piston rod of the air cylinder extends out of the cylinder body; during the process of contracting the cylinder body, the piston rod of the cylinder moves upwards along the preset direction A by the movable seat 20.

In other embodiments, the first driving device 40 may have other structures, for example, the first driving device 40 includes a motor fixed to the side plate 12 of the base 10 and a lead screw connected to an output shaft of the motor, the movable seat 20 is screwed to an outer side of the lead screw, and the movable seat 20 can be moved back and forth in the preset direction a by the forward and backward rotation of the motor.

Further, the axis of the suction rod 30 coincides with the base axis B, that is, the suction rod 30 rotates around its own axis, so that the workpiece to be assembled, which is sucked by the suction rod 30, has good stability when rotating along with the suction rod 30. In other embodiments, the axis of the suction rod 30 may be angled with respect to the base axis B.

Wherein the suction rod 30 is a hollow tubular structure. The suction rod 30 is rotatably disposed on the second connecting plate 22 of the movable seat 20. Illustratively, the second connecting plate 22 is provided with a bearing seat 25, and the suction rod 30 is rotatably connected with the bearing seat 25 through a bearing.

Because the axis of the suction rod 30 coincides with the base axis B, and the base axis B is arranged along the preset direction A, the suction rod 30 is also arranged along the preset direction A, when the first driving device 40 drives the movable seat 20 to move along the preset direction A, the suction rod 30 moves along the length direction of the suction rod 30, and therefore a workpiece to be assembled can be sucked more accurately.

Further, the suction device 200 further includes a stopper 80 for limiting the angle of rotation of the suction rod 30 about the base axis B. The structure enables the suction rod 30 to only rotate by a preset angle, so that a workpiece to be assembled and sucked by the suction rod 30 can accurately reach an assembly position, and the assembly precision is improved.

Optionally, the limiting member 80 is connected to the movable base 20, the suction rod 30 is fixedly provided with a connecting member 90, and the limiting member 80 is located on a track of the rotating of the connecting member 90 around the base axis B.

Since the connecting member 90 is fixedly disposed on the suction rod 30, when the suction rod 30 rotates around the base axis B under the action of the first driving device 40, the connecting member 90 will also rotate around the base axis B along with the suction rod 30. Because the limiting member 80 is connected to the movable base 20, and the limiting member 80 is located on the track of the connecting member 90 rotating around the base axis B, the limiting member 80 can block the connecting member 90, that is, the connecting member 90 will contact with the limiting member 80 during the process of rotating around the base axis B. After the connecting member 90 contacts the position-limiting member 80, the position-limiting member 80 stops the connecting member 90 from rotating around the base axis B, so as to limit the rotation angle of the suction rod 30 around the base axis B. The limiting member 80 with the structure is simple in structure and easy to realize.

Illustratively, the direction of extension of the connector 90 is perpendicular to the direction of extension of the suction wand 30.

Optionally, the limiting member 80 is a telescopic structure. By adjusting the telescopic amount of the limiting part, the connecting piece can be contacted with the limiting part at different positions, so that the range of the rotating angle of the suction rod can be adjusted.

Illustratively, the limiting member 80 is a second air cylinder, a cylinder body of the second air cylinder is fixed to the movable base 20, a piston rod of the second air cylinder is located on a track of the connecting member 90 rotating around the base axis B, and the piston rod of the second air cylinder is used for preventing the connecting member 90 from rotating.

Wherein, the cylinder body of the second cylinder is connected with a third connecting plate 23 fixed on the movable seat 20.

In other embodiments, the position-limiting element 80 may have other structures, for example, the position-limiting element 80 is a protrusion protruding from the second connecting plate 22 of the movable base 20, and the protrusion blocks the position-limiting element 80. For the limiting member 80 with such a structure, the limiting member 80 can be fixedly connected with the movable seat 20, and the structure cannot adjust the range of the rotation angle of the suction rod 30; the position-limiting member 80 may also be movably disposed on the movable seat 20, and this structure can adjust the range of the rotation angle of the suction rod 30. If the limiting member 80 is movably disposed on the movable base 20, a locking member may be disposed between the limiting member 80 and the movable base 20, and after the position of the limiting member 80 is adjusted, the limiting member 80 and the movable base 20 may be locked by the locking member.

Further, a second driving device 50 is connected to the connecting member 90, the second driving device 50 being adapted to drive the connecting member 90 in rotation about the base axis B.

The second driving device 50 is connected to the connecting member 90, that is, the second driving device 50 acts on the connecting member 90 to rotate the suction rod 30 by driving the connecting member 90 to rotate. That is, the connecting member 90 functions both for contacting the stopper 80 and connecting the second driving device 50 and the suction rod 30.

Alternatively, the second driving device 50 includes a first air cylinder, a cylinder body of the first air cylinder is connected to the movable seat 20, and a piston rod of the first air cylinder is connected to the connecting member 90. The driving device is simple in structure, easy to realize and low in cost.

Further, with continued reference to fig. 2, the piston rod of the first cylinder is connected to the connecting member 90 by a pin 51. The piston rod and the round pin axle 51 fixed connection of first cylinder are equipped with bar groove 91 on the connecting piece 90, and round pin axle 51 movably sets up in bar groove 91. This arrangement ensures that the extension and retraction of the piston rod of the first cylinder enables the normal rotation of the link 90 and the suction rod 30. When the piston rod of the first cylinder stretches out and draws back, the lock pin will move in the strip-shaped groove 91, and simultaneously the connecting piece 90 and the suction rod 30 rotate around the base axis B.

Wherein, the cylinder body of the first cylinder is connected with a third connecting plate 23 fixed on the movable seat 20.

Illustratively, as shown in FIG. 3, the connecting members 90 are bar-shaped block structures. The connecting piece 90 is provided with a U-shaped clamping groove 92, a threaded hole 93 and a positioning hole 94. The U-shaped engaging groove 92 penetrates both ends of the connecting member 90 in the width direction and also penetrates one end of the connecting member 90 in the length direction; the length direction of the strip-shaped groove 91 is consistent with the length direction of the connecting piece 90, one end of the strip-shaped groove 91 in the depth direction penetrates through one end face of the connecting piece 90 in the thickness direction, and the other end of the strip-shaped groove 91 in the depth direction is communicated with the U-shaped clamping groove 92; one end of the threaded hole 93 penetrates through one end of the connecting piece 90 in the width direction, and the other end of the threaded hole 93 is communicated with the positioning hole 94; the walls of the positioning holes 94 include curved walls and planar walls connected to the curved walls to form a closed structure.

When the suction rod 30 is connected with the connecting piece 90, the suction rod 30 is inserted into the positioning hole 94, and the outer contour of the cross section of the part of the suction rod 30 inserted into the positioning hole 94 is matched with the inner contour of the cross section of the positioning hole 94, so that the connecting piece 90 cannot rotate circumferentially relative to the suction rod 30; the coupling member 90 is locked to the suction rod 30 by screwing the locking screw into the screw hole 93 and pressing the locking screw against the suction rod 30 so that the coupling member 90 cannot move relative to the suction rod 30 in the axial direction of the suction rod 30.

When the piston rod of first cylinder is connected with connecting piece 90, the piston rod of first cylinder extends to in the U-shaped draw-in groove 92, inserts in bar groove 91 and is connected fixedly with the piston rod of first cylinder with round pin axle 51, and the lockpin both can be at bar groove 91 internal rotation, can remove in bar groove 91 again.

In addition, the connecting member 90 is provided with an inclined surface 95 for contacting the piston rod of the first cylinder, the inclined surface 95 is connected to one end surface of the connecting member 90 in the length direction and one end surface of the connecting member in the width direction, the inclined surface 95 and the strip-shaped groove 91 are respectively located at two sides of the positioning hole 94, that is, the inclined surface 95 and the strip-shaped groove 91 are respectively located at two sides of the suction rod 30.

In other embodiments, the first cylinder may also be connected to the movable seat 20 and the connecting member 90 by other means, for example, one end of the cylinder body of the first cylinder, which is far away from the piston rod, is hinged to the third connecting plate 23 of the movable seat 20, and one end of the piston rod of the first cylinder, which is far away from the cylinder body, is hinged to the connecting member 90.

In other embodiments, the second driving device 50 may have other structures in the case that the second driving device 50 is connected to the connecting member 90. For example, the second driving device 50 includes a motor fixed to the movable base 20 and an eccentric wheel fixed to an output shaft of the motor, and the eccentric wheel is connected to the connecting member 90 through a pin 51. After the motor operates to rotate the eccentric wheel, the eccentric wheel will drive the connecting member 90 and the suction rod 30 to rotate around the base axis B.

Of course, in other embodiments, the second driving device 50 may not be connected to the connecting member 90, in which case the second driving device 50 may have other structures. For example, the second driving device 50 includes a motor fixed to the movable base 20, a first gear fixed to an output shaft of the motor, and a second gear fixed to the suction rod 30, and engaged with the first gear. After the motor works to drive the first gear to rotate, the second gear drives the suction rod 30 to rotate.

Optionally, as shown in fig. 1, the suction device 200 further includes a pressure regulating valve 100, the pressure regulating valve 100 being mounted to the base 10, the pressure regulating valve 100 being used to regulate the suction pressure of the suction rod 30. The suction pressure of the suction rod 30 can be adjusted by the pressure regulating valve 100, and various types of workpieces to be assembled can be sucked.

Optionally, the suction device 200 further comprises a pressure detection device 110, the pressure detection device 110 is mounted on the base 10, and the pressure detection device 110 is used for detecting the suction pressure of the suction rod 30. The pressure detection device 110 can detect the suction pressure of the suction rod 30, and can judge whether the suction rod 30 successfully sucks the workpiece to be assembled according to the detected suction pressure.

In practical use, the suction rod 30, the pressure regulating valve 100 and the pressure detecting device 110 can be connected in series through a pipeline and then connected with an air extracting device.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A suction device, comprising:

a base;

the movable seat is movably arranged on the base;

the suction rod is rotatably arranged on the movable seat;

the first driving device is used for driving the movable seat to move back and forth relative to the base along a preset direction; and

and the second driving device is used for driving the suction rod to rotate around a base axis arranged along the preset direction.

2. The suction device as recited in claim 1, further comprising a stop;

3. The suction device as claimed in claim 2, wherein the position limiting member is connected to the movable base, a connecting member is fixedly provided on the suction rod, and the position limiting member is located on a track of the connecting member rotating around the base axis.

4. The suction device as claimed in claim 3, wherein the retaining member is a telescopic structure.

5. The suction device as claimed in claim 3, wherein said second driving means is connected to said link member for driving said link member in rotation about said base axis.

6. The suction device as claimed in claim 5, wherein the second driving means comprises a first cylinder;

7. The suction device as claimed in claim 6, wherein the piston rod of the first cylinder is connected to the connecting member by a pin;

8. The suction device as claimed in any one of claims 1 to 7, wherein the axis of the suction rod coincides with the base axis.

9. The suction device as claimed in claim 1, further comprising a pressure regulating valve;

10. The suction device as recited in claim 1, further comprising a pressure detection device;