CN216359439U - Positioning assembly, clamping assembly and positioning device - Google Patents

Abstract

The utility model provides a positioning assembly, a clamping assembly and a positioning device, wherein the positioning assembly, the clamping assembly and the positioning device comprise an airflow rod and a first driving piece, the airflow rod is provided with a vent hole, the vent hole allows airflow to pass through, the output end of the first driving piece can drive the airflow rod to move towards a workpiece, so that the vent hole of the airflow rod corresponds to the workpiece, and the airflow rod can jet or suck air to drive the workpiece to move on the surface of a carrying plate and lean against the workpiece so as to position the workpiece. According to the positioning assembly, the clamping assembly and the positioning device, the workpiece is positioned under the condition that the workpiece is not directly contacted, the workpiece is prevented from being deformed due to direct contact stress, the workpiece is further protected, and the workpiece is favorably and accurately measured or used.

Description

Positioning assembly, clamping assembly and positioning device

Technical Field

The utility model relates to the technical field of positioning devices, in particular to a positioning assembly, a clamping assembly and a positioning device.

Background

During the use process of a part of weak parts, the weak parts need to be positioned so as to finish corresponding detection or processing. However, in the process of positioning the weak part, the existing device is easy to deform the weak part, so that the detection result is influenced, or further processing cannot be performed, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at least part of problems and provides a positioning assembly, a clamping assembly and a positioning device, which can position a weak part and prevent the weak part from deforming.

The present invention provides a positioning assembly comprising:

the air flow rod is provided with an air vent which allows air flow to pass through;

a first driving member;

the output end of the first driving piece can drive the airflow rod to move towards the workpiece, so that the air vent of the airflow rod corresponds to the workpiece, and the airflow rod can jet air or suck air to drive the workpiece to move on the surface of the loading plate and lean against the workpiece so as to position the workpiece.

In one embodiment, the number of the vent holes is at least two, and the projection of the at least two vent holes on the surface of the object carrying plate forms an included angle.

In one embodiment, the opening of the vent hole is inclined to the surface of the carrier plate, so that the workpiece always contacts the surface of the carrier plate and moves.

The utility model also includes a clamping assembly adapted to the positioning assembly, comprising:

the object carrying plate is used for placing a workpiece;

and the positioning piece is arranged on the carrying plate and used for being leaned against by the workpiece.

In one embodiment, the carrying plate is provided with a relief hole allowing the airflow rod to pass through.

In one embodiment, the number of the positioning members is at least two, and the positioning members are arranged at intervals and respectively abut against different sides of the workpiece to position the workpiece.

In one embodiment, the clamping assembly further comprises:

the fixing piece is arranged opposite to the carrying plate;

a second driving member;

a third driving member;

the output end of the second driving piece can drive the stable piece to move along the surface of the object carrying plate so as to adjust the position of the stable piece relative to the workpiece; the output end of the third driving piece can drive the stable piece to move towards or away from the surface of the carrying plate, so that the stable piece presses the workpiece or releases the workpiece from the carrying plate.

In one embodiment, the stabilizing member comprises:

a connecting portion;

the pressing part is arranged on one side, facing the surface of the carrying plate, of the connecting part;

one end of the guide rod is connected with one of the connecting part and the abutting part in a sliding manner, and the other end of the guide rod is fixedly connected with the other one of the connecting part and the abutting part;

the elastic piece is arranged between the pressing part and the connecting part, and two ends of the elastic piece respectively abut against the pressing part and the connecting part;

the output ends of the second driving piece and the third driving piece can drive the connecting portion to move, and the connecting portion can drive the pressing portion to move through the guide rod and the elastic piece, so that the pressing portion presses and fixes the workpiece.

The utility model also provides a positioning device which comprises the positioning assembly and the clamping assembly.

In one embodiment, the number of the clamping assemblies is at least two;

wherein, the air current pole in a locating component can correspond the different year thing boards in two at least clamping subassemblies in proper order, and the air current pole can drive the work piece removal on the different year thing board surfaces in proper order.

According to the positioning assembly, the clamping assembly and the positioning device provided by the utility model, the output end of the first driving part can drive the airflow rod to move, so that the airflow rod can move towards a workpiece and adjust the position relative to the workpiece, and further the vent hole can correspond to the workpiece, and the airflow rod can drive the workpiece to move on the surface of the carrying plate and lean against the workpiece through air injection or air suction of the vent hole, so that the workpiece is positioned under the condition that the workpiece is not directly contacted and applied with force, the workpiece is prevented from being easily deformed due to direct contact stress, the workpiece is further protected, and the accurate measurement or smooth use of the workpiece is facilitated.

Drawings

FIG. 1 is a schematic structural diagram of a positioning assembly according to an embodiment of the present invention;

FIG. 2 is a schematic view of the positioning assembly shown in FIG. 1 from another perspective;

FIG. 3 is a schematic view of the positioning assembly shown in FIG. 1 from another perspective;

FIG. 4 is a schematic view of the airflow rod of the positioning assembly of FIG. 1;

FIG. 5 is a schematic structural view of a clamping assembly according to an embodiment of the present invention;

FIG. 6 is a schematic view of the clamping assembly shown in FIG. 5 from another perspective;

FIG. 7 is a schematic structural view of the clamping assembly shown in FIG. 5 from another perspective;

figure 8 is a schematic view of a portion of the carrier plate of the chuck assembly of figure 1;

figure 9 is a schematic structural view of the stabilizing member of the clamping assembly of figure 6;

figure 10 is a cross-sectional view at a-a of the steady shown in figure 9.

Description of reference numerals:

100. a positioning assembly; 10. a base; 20. a first driving member; 30. a transfer seat; 31. mounting holes; 40. an airflow rod; 41. a vent hole; 50. a gas distribution member; 200. clamping the assembly; 210. a loading plate; 211. the surface of the carrier plate; 212. avoiding holes; 220. a positioning member; 230. a stabilizing member; 231. a connecting portion; 232. a pressing part; 233. a guide bar; 234. an elastic member; 240. a second driving member; 250. and a third driving member.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 invention. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The utility model provides a positioning assembly, a clamping assembly and a positioning device for solving the technical problem that a workpiece is easy to deform in the positioning process, wherein the positioning assembly, the clamping assembly and the positioning device comprise an airflow rod and a first driving piece, the airflow rod is provided with a vent hole, and airflow is allowed to pass through the vent hole; the output end of the first driving piece can drive the airflow rod to move towards the workpiece, so that the air vent of the airflow rod corresponds to the workpiece, and the airflow rod can jet air or suck air to drive the workpiece to move on the surface of the loading plate and lean against the workpiece so as to position the workpiece. As will be described in detail below.

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a positioning assembly according to an embodiment of the present invention; FIG. 2 is a schematic view of the positioning assembly shown in FIG. 1 from another perspective; fig. 3 is a schematic structural diagram of the positioning assembly shown in fig. 1 from another view angle. The utility model provides a positioning assembly, a clamping assembly and a positioning device, which can position a workpiece, prevent the workpiece from deforming under stress in the positioning process and enable the workpiece to be measured or used smoothly.

The utility model provides a positioning assembly 100, the positioning assembly 100 includes a base 10, a first driving member 20, an adapter 30 and an airflow rod 40, the first driving member 20 is disposed on the base 10 and disposed opposite to the adapter 30, and the airflow rod 40 is disposed on the adapter 30. The base 10 is used to stabilize the positioning assembly 100. The first drive member 20 provides the driving force for the movement of the airflow lever 40. Adapter 30 is used to mount airflow rod 40. The airflow rod 40 is used for driving the workpiece to move.

The base 10 is disposed in an external environment and can be stably installed on the ground or other workpieces, thereby stably fixing the positioning assembly 100 as a whole, preventing the positioning assembly 100 from being turned over during operation, and ensuring normal use of the positioning assembly 100. The base 10 may be a regular or irregular shaped fixed plate, or may have other configurations.

The first driving member 20 is disposed on the base 10. In the embodiment, the first driving member 20 is fixedly arranged on the base 10 through the threaded fastener, so that the first driving member 20 is convenient to detach and replace, and maintenance is facilitated, meanwhile, the threaded fastener can ensure that the first driving member 20 and the base 10 have good stability, the first driving member 20 and the base 10 are prevented from loosening, and the positioning assembly 100 is ensured to be normally used; it is understood that in other embodiments, other connecting methods such as clamping, welding, etc. may be used between the first driving member 20 and the base 10, as long as the above-mentioned purpose can be achieved.

In the embodiment, the first driving member 20 is selected as a motor, which is convenient to obtain, has a small space station, can stably transmit, and is beneficial to accurately driving the adapter 30 to move; it is understood that, in other embodiments, the first driving member 20 may be selected from other types of driving sources, such as an air cylinder or a mechanical arm, and is not limited in particular.

The adapter 30 is provided with a mounting hole 31, the mounting hole 31 is used for mounting the airflow rod 40, the output end of the first driving piece 20 can drive the adapter 30 to move, so that the airflow rod 40 is driven to move, the airflow rod 40 can correspond to a workpiece, the workpiece is driven to move and lean against, and positioning is achieved. In the present embodiment, the output end of the first driving member 20 is directly connected to the adapter 30; it is understood that in other embodiments, the output end of the first driving member 20 can move the adaptor 30 through other transmission components.

Referring to fig. 4, fig. 4 is a schematic structural view of an airflow rod in the positioning assembly shown in fig. 1. The airflow rod 40 is provided with an air vent 41, and the air vent 41 allows airflow to pass through, so that the airflow rod 40 can drive the workpiece to move through the air vent 41. In the embodiment, the airflow rod 40 can inject air to the outside through the vent hole 41, and further push the workpiece to move and position through the air injection, so that the workpiece is prevented from being directly contacted and applied with force in the positioning process, the workpiece is prevented from being deformed, and the use is facilitated; it will be appreciated that in other embodiments, the air flow bar 40 may also draw the workpiece in motion by suction, as well as achieve the above-described objective of positioning the workpiece without directly contacting the workpiece.

The number of the vent holes 41 is at least two, and the projection of at least two vent holes 41 on the surface 211 of the object carrying plate is arranged at an included angle, namely, the at least two vent holes 41 are arranged at intervals along the circumferential direction of the airflow rod 40, so that the at least two vent holes 41 can act together and respectively spray air towards different parts of the workpiece, the moving direction of the workpiece is further adjusted, the workpiece can be enabled to be subjected to sufficient moving acting force, and the workpiece can be smoothly positioned.

In this embodiment, the number of the vent holes 41 is two, and an included angle formed by the projection of the vent holes 41 on the surface 211 of the object carrying plate is a right angle, that is, an interval included angle of the vent holes 41 in the circumferential direction of the airflow rod 40 is 90 degrees, and the vent holes are arranged in parallel; the shape of the workpiece is approximately rectangular, a through hole is formed in the workpiece, the edge of the workpiece is arranged in a flanging mode, the airflow rod 40 can extend into the through hole under the driving of the output end of the first driving piece 20, the airflow rod 40 respectively sprays air to different edges of the workpiece through the two air vents 41, so that the workpiece can be stressed and move in two directions, and the two edges of the workpiece can respectively lean against each other to realize workpiece positioning; it is understood that in other embodiments, the number of the vent holes 41 may be three, four, etc. other values; the included angle between the vent holes 41 can be other angles, for example, when the workpiece is required to be moved by being stressed on one side, the two vent holes 41 can be enabled to correspond to the same edge part of the workpiece together by changing the included angle between the two vent holes 41; of course, the workpiece may have other regular or irregular shapes as long as the above-described object is achieved.

In the embodiment, the opening direction of the vent hole 41 is inclined to the surface 211 of the object carrying plate, so that when the airflow rod 40 ejects air to the workpiece through the vent hole 41, the workpiece can be attached to the surface 211 of the object carrying plate, and then the workpiece can always contact the surface 211 of the object carrying plate and move, so that the workpiece is prevented from being turned over, the workpiece is ensured to be stably positioned, and the use is facilitated; it is understood that in other embodiments, the opening direction of the vent 41 may be flush with the surface 211 of the object carrying plate, and the purpose of preventing the workpiece from rolling over can also be achieved.

In the embodiment, the included angle between the opening direction of the vent hole 41 and the horizontal plane is an acute angle, so that the workpiece is not easy to turn on one side, and the workpiece can be ensured to be subjected to sufficient moving acting force; it is understood that in other embodiments, the opening direction of the vent hole 41 may have other angles with respect to the horizontal plane according to different working conditions.

Referring to fig. 5 to 7, fig. 5 is a schematic structural view of a clamping assembly according to an embodiment of the present invention; FIG. 6 is a schematic view of the clamping assembly shown in FIG. 5 from another perspective; figure 7 is a schematic structural view of the clamping assembly shown in figure 5 from another perspective. The utility model further provides a clamping assembly 200, the clamping assembly 200 is adapted to the positioning assembly 100 and comprises a carrying plate 210, a positioning member 220 and a stabilizing member 230, the positioning member 220 and the stabilizing member 230 are both arranged on the carrying plate 210, the carrying plate 210 is used for placing a workpiece and allowing the workpiece to move on the surface 211 of the carrying plate, the positioning member 220 is used for being leaned against by the workpiece to position the workpiece, and the stabilizing member 230 is used for stabilizing the workpiece.

Referring to fig. 8, fig. 8 is a partial structural schematic view of the carrier plate of the clamping assembly shown in fig. 1. In the embodiment, the object carrying plate 210 is substantially rectangular, the rectangular object carrying plate 210 is convenient to process and take materials, and the surface 211 of the object carrying plate is wide, so that the object carrying plate is suitable for different types of workpieces, and the application range of the clamping assembly 200 is further expanded; it is understood that in other embodiments, the carrier plate 210 may have other regular or irregular shapes.

In this embodiment, the positioning element 220 and the object carrying plate 210 are integrally formed, so that the positioning element 220 and the object carrying plate 210 have good connection stability, and the positioning element 220 is further beneficial to stably positioning a workpiece; it is understood that in other embodiments, the positioning member 220 and the carrier plate 210 may be separate structures and may be fixed by other methods such as screwing, clipping, or welding.

The quantity of setting element 220 is two at least, and the interval sets up each other to at least some setting elements 220 can support by the different sides of work piece, make the work piece can diversely lean on, are favorable to the stable location of work piece. In the embodiment, the number of the positioning members 220 is two relative to one workpiece, so that the investment cost is reduced and the economic benefit is improved while the stable positioning of the workpiece is met; it is understood that in other embodiments, the number of positioning members 220 may be other values relative to a workpiece.

In the embodiment, the object carrying plate 210 is further provided with an avoiding hole 212, the avoiding hole 212 corresponds to a mounting station of the workpiece, and the airflow rod 40 can penetrate through the avoiding hole 212 and extend into a through hole of the workpiece, so that the airflow rod 40 can jet air corresponding to the workpiece in a proper posture, and the workpiece can be moved and positioned stably; it is understood that in other embodiments, the object plate 210 may not be provided with the avoiding hole 212 according to different shapes of the workpieces, and the airflow rod 40 may be disposed at an edge portion of the corresponding workpiece and may inject air to the edge portion, so as to position the corresponding workpiece.

The clamping assembly 200 further comprises a second driving member 240 and a third driving member 250, wherein an output end of the second driving member 240 can drive the steady member 230 to move along the surface 211 of the object carrying plate so as to adjust the position of the steady member 230 relative to the workpiece; the output end of the third driving member 250 can drive the steady 230 to move towards or away from the carrier plate surface 211, so that the steady 230 can press the workpiece or release the workpiece from the carrier plate 210.

In the present embodiment, the second driving member 240 and the third driving member 250 are both motors; it is understood that in other embodiments, the second driving member 240 and the third driving member 250 may be different types of driving sources, such as an air cylinder, a mechanical arm, etc., as long as the above-mentioned driving purpose can be achieved.

The clamping assembly 200 further comprises an adapter 30, the adapter 30 being used to mount the stabilizing member 230. Specifically, the output end of the second driving element 240 can drive the adaptor 30 to move along the surface 211 of the object carrying plate, so as to drive the steady piece 230 to move, the third driving element 250 is arranged on the adaptor 30, and the third driving element 250 can move together with the adaptor 30 and drive the steady piece 230 to move; thereby the setting of adapter 30 can avoid the drive end or other rotating assembly of steadiness member 230 lug connection driving piece, and then the installation and the dismantlement of steadiness member 230 of being convenient for, and convenient follow-up maintenance does benefit to the use.

Referring to fig. 9 and 10 together, fig. 9 is a schematic structural view of the fixing member of the clamping assembly shown in fig. 6; figure 10 is a cross-sectional view at a-a of the steady shown in figure 9. The fixing member 230 includes a connecting portion 231, a pressing portion 232, a guide rod 233 and an elastic member 234, the guide rod 233 connects the pressing portion 232 and the connecting portion 231, the elastic member 234 is disposed between the connecting portion 231 and the pressing portion 232, the connecting portion 231 is used for connecting the third driving member 250, the pressing portion 232 is used for pressing and fixing the workpiece, the guide rod 233 is used for guiding the relative movement between the pressing portion 232 and the connecting portion 231, and the elastic member 234 is used for protecting the workpiece.

The connecting portion 231 may have a regular shape such as a rectangular shape or a circular shape, or may have another irregular shape. One end of the guide rod 233 is slidably disposed on one of the connecting portion 231 and the pressing portion 232, the other end of the guide rod 233 is fixedly disposed on the other, the elastic member 234 is sleeved on the guide rod 233 and disposed between the pressing portion 232 and the connecting portion 231, and two ends of the elastic member 234 respectively press the connecting portion 231 and the pressing portion 232, so that the connecting portion 231 can move along the surface 211 of the object carrying plate under the driving of the driving member, and the connecting portion 231 can drive the pressing portion 232 to move through the guide rod 233 and the elastic member 234, so that the pressing portion 232 presses the workpiece, and in the pressing process, the elastic member 234 is compressed, so as to adjust the pressure applied to the workpiece by the pressing portion 232, thereby preventing the workpiece from being damaged due to excessive force application, and protecting the workpiece while stabilizing the workpiece, which is beneficial to use.

In the present embodiment, one end of the guide rod 233 is fixedly disposed on the pressing portion 232, and the other end is slidably disposed on the connecting portion 231; it is understood that in other embodiments, one end of the guide rod 233 can be fixedly disposed on the connecting portion 231, and the other end can be slidably connected to the pressing portion 232, which can also achieve the above-mentioned purpose.

In this embodiment, the number of the guide rods 233 and the elastic members 234 is two relative to one pressing portion 232, the two guide rods 233 are arranged at intervals, and the two elastic members 234 are respectively sleeved on the two guide rods 233, so as to improve the connection reliability of the connecting portion 231 and the pressing portion 232; it is understood that in other embodiments, the number of the guide rods 233 and the elastic members 234 may be other values, and is not limited in particular.

In this embodiment, the object carrying plate 210 is further provided with a slide rail, and the adapter 30 is slidably connected to the slide rail, so that the adapter 30 can move along the slide rail under the driving of the second driving member 240, thereby ensuring that the adapter 30 can smoothly drive the steady piece 230 to move, and improving the overall stability of the clamping assembly 200; it will be appreciated that in other embodiments, the carrier plate 210 and the adapter 30 may be connected in other ways.

In the embodiment, the number of the slide rails is two, and the two slide rails are both connected with the adapter 30 in a sliding manner, so that the two slide rails can bear the gravity of the adapter 30 together, and the service life of the slide rails is prolonged; it is understood that in other embodiments, the slide rails may be set to other values.

The utility model also provides a positioning device, which comprises the positioning assembly 100 and the clamping assembly 200.

In the positioning device, the number of the airflow rods 40 in the positioning assembly 100 is at least two, and the airflow rods 40 are all arranged on the mounting seat, and the airflow rods 40 are arranged at intervals; the surface 211 of the object carrying plate in the clamping assembly 200 is provided with a plurality of avoidance holes 212, and the number of the avoidance holes 212 is the same as that of the airflow rods 40; and then the output of first driving piece 20 can drive the mount pad and move towards objective plate surface 211 to make a plurality of air current poles 40 stretch into different dodge hole 212 respectively, in order to drive different work pieces respectively and lean on setting element 220 jointly, promote the treatment effeciency of work piece, do benefit to the use.

In the embodiment, because the rectangular workpiece is provided with two through holes, the two airflow rods 40 respectively extend into the two through holes to jointly drive the workpiece to move, and the integral positioning of the workpiece is realized; it is understood that in other embodiments, due to different workpiece types, one airflow rod 40 may correspond to one workpiece, or another number of airflow rods 40 may correspond to one workpiece, as long as the purpose of positioning the workpiece is achieved.

In this embodiment, the positioning assembly 100 further includes an air distributing member 50, the air distributing member 50 is used for collecting and distributing air flow, so that the air flow can flow through the plurality of air flow rods 40 to achieve air injection or air suction, and the arrangement of the air distributing member 50 can make the air flow of each air flow rod 40 uniform, that is, the thrust or suction applied by the air flow rods 40 to the workpiece is more balanced, which is beneficial to stably positioning the workpiece; it is understood that in other embodiments, each airflow lever 40 may be provided with an airflow source independently, depending on different operating conditions.

The number of clamping components 200 in the positioning device is at least two, the number of positioning components 100 is one, the output end of the first driving part 20 in the positioning component 100 can drive the airflow rod 40 to sequentially correspond to different object carrying plates 210 in at least two clamping components 200, and the airflow rod 40 can sequentially drive workpieces on different object carrying plate surfaces 211 to move, so that the workpieces can be respectively positioned and stabilized by different clamping components 200. The working mode that one positioning assembly 100 corresponds to one clamping assembly 200 can reduce the input cost and is beneficial to improving the economic benefit.

In the present embodiment, one positioning assembly 100 corresponds to two clamping assemblies 200; it can be understood that in other embodiments, one positioning component 100 may also correspond to three, four, or five clamping components 200, and certainly, under the condition of measuring the working efficiency and the input cost, a plurality of positioning components 100 may also be provided, and each positioning component 100 corresponds to a plurality of clamping components 200, thereby meeting the requirements for the production efficiency under corresponding working conditions.

The working processes of the positioning assembly, the clamping assembly and the positioning device are approximately as follows:

the work piece is placed at objective plate surface 211 of clamping subassembly 200, the output of first driving piece 20 in locating component 100 drives the mount pad and moves, air current pole 40 moves along the mount pad jointly, and make air current pole 40 stretch into the hole of dodging 212 of objective plate 210, air current pole 40 drives the work piece and moves at objective plate surface 211 through spouting gas or breathing in, and make the work piece lean on setting element 220, the output of second driving piece 240 drives adapter 30 and moves along objective plate surface 211, make adapter 30 be close to the region of placing of work piece, the output of third driving piece 250 drives firm 230 and moves towards the work piece, firm 230 supports the pressure work piece, and then firm work piece, be convenient for the follow-up removal of work piece in order to measure or process.

According to the positioning assembly, the clamping assembly and the positioning device provided by the utility model, the output end of the first driving part can drive the airflow rod to move, so that the airflow rod can move towards a workpiece and adjust the position relative to the workpiece, and further the vent hole can correspond to the workpiece, and the airflow rod can drive the workpiece to move on the surface of the carrying plate and lean against the workpiece through air injection or air suction of the vent hole, so that the workpiece is positioned under the condition that the workpiece is not directly contacted and applied with force, the workpiece is prevented from being easily deformed due to direct contact stress, the workpiece is further protected, and smooth measurement or use of the workpiece is facilitated.

In addition, in the present invention, unless otherwise expressly specified or limited, the terms "connected," "stacked," and the like are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A positioning assembly, comprising:

the air flow rod is provided with an air vent which allows air flow to pass through;

a first driving member;

the output end of the first driving piece can drive the airflow rod to move towards a workpiece, so that the vent hole of the airflow rod corresponds to the workpiece, and the airflow rod can jet air or suck air to drive the workpiece to move on the surface of the loading plate and lean against the workpiece so as to position the workpiece.

2. The positioning assembly of claim 1, wherein the number of the at least two vent holes is at least two, and a projection of the at least two vent holes on the surface of the object carrying plate is arranged at an included angle.

3. The positioning assembly of claim 1 wherein the vent opening is angled relative to the carrier plate surface such that the workpiece is held against and moved across the carrier plate surface.

4. A clamping assembly adapted to the positioning assembly of any one of claims 1 to 3, comprising:

the carrying plate is used for placing a workpiece;

and the positioning piece is arranged on the carrying plate and used for being leaned against by the workpiece.

5. The clamping assembly of claim 4, wherein the carrier plate defines an access hole that allows the airflow rod to pass therethrough.

6. The clamping assembly according to claim 4, wherein the number of the positioning members is at least two, and the positioning members are arranged at intervals and respectively abut against different sides of the workpiece to position the workpiece.

7. The chuck assembly of claim 4, further comprising:

the fixing piece is arranged opposite to the carrying plate;

a second driving member;

a third driving member;

the output end of the second driving piece can drive the stable piece to move along the surface of the carrying plate so as to adjust the position of the stable piece relative to the workpiece; the output end of the third driving piece can drive the stable piece to move towards or away from the surface of the carrying plate, so that the stable piece presses the workpiece or releases the workpiece from the carrying plate.

8. The clamping assembly of claim 7, wherein the stabilizing member comprises:

a connecting portion;

the pressing part is arranged on one side, facing the surface of the carrying plate, of the connecting part;

one end of the guide rod is connected with one of the connecting part and the abutting part in a sliding manner, and the other end of the guide rod is fixedly connected with the other of the connecting part and the abutting part;

the elastic piece is arranged between the pressing part and the connecting part, and two ends of the elastic piece respectively abut against the pressing part and the connecting part;

the output ends of the second driving piece and the third driving piece can drive the connecting portion to move, and the connecting portion can drive the pressing portion to move through the guide rod and the elastic piece, so that the pressing portion presses and fixes the workpiece.

9. A positioning device comprising a positioning assembly as claimed in any one of claims 1 to 3 and a clamping assembly as claimed in any one of claims 4 to 8.

10. The positioning apparatus of claim 9, wherein the number of clamping assemblies is at least two;

the positioning assembly comprises a positioning assembly, an air flow rod, a loading plate and a workpiece, wherein the air flow rod in the positioning assembly can sequentially correspond to different clamping assemblies in the at least two clamping assemblies and can sequentially drive different workpieces on the surface of the loading plate to move.

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