CN219026698U - Centering positioning device - Google Patents

Abstract

The utility model provides a centering positioning device which comprises a transfer component, a bearing mechanism and a ranging component, wherein the bearing mechanism comprises a bearing component, a supporting component and a first driving component, the bearing component is used for bearing a workpiece and is connected with the transfer component, the first driving component is connected with the supporting component and the bearing component, the first driving component is used for driving the supporting component to move so that the supporting component pushes the workpiece to move along the negative direction of a first direction, and the ranging component is arranged on one side, away from the supporting component, of the first driving component along the positive direction and is connected with the transfer component. When the centering positioning device works, the distance measuring component measures the distance of the negative movement of the supporting component along the first direction when the supporting component and the bearing component clamp the workpiece, and then the transferring component drives the bearing component bearing the workpiece to move along the positive direction according to the moving distance of the supporting component, so that the central axis of the workpiece coincides with the central axis of the centering positioning device, and the centering positioning precision of the workpiece is improved.

Description

Centering positioning device

Technical Field

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

Background

In the processing process of the workpiece, the workpiece needs to be centered and positioned, namely, the central axis of the workpiece is found, and the central axis is used as a processing reference. However, the existing centering positioning devices are generally two types, one type is that two groups of springs or two groups of air cylinders are abutted against two opposite sides of a workpiece to realize automatic centering, and the centering positioning mode is simple in operation, but the elasticity of the two groups of springs is inconsistent, or the movement strokes of the two groups of air cylinders cannot be kept consistent, so that the centering positioning precision of the workpiece is not high; the other is to process the image obtained by the CCD to realize accurate positioning, but the cost is higher and the application range is smaller.

Disclosure of Invention

In view of the above, it is necessary to provide a centering positioning device to improve centering positioning accuracy of a workpiece and to meet the demand for low cost.

An embodiment of the present utility model provides a centering positioning device, including:

a transfer assembly;

the bearing mechanism comprises a bearing assembly, a supporting piece and a first driving piece, wherein the bearing assembly is used for bearing a workpiece and is connected with the transfer assembly, the first driving piece is connected with the supporting piece and the bearing assembly, and the first driving piece is used for driving the supporting piece to move so that the supporting piece pushes the workpiece to move along the negative direction of a first direction and enables the supporting piece to be matched with the bearing assembly to clamp the workpiece;

the distance measuring assembly is arranged on one side, away from the supporting piece, of the first driving piece along the first direction and is connected with the transfer assembly, and is used for measuring the moving distance of the supporting piece when the supporting piece is matched with the bearing assembly and clamps the workpiece; wherein,,

the transfer assembly is used for driving the bearing assembly bearing the workpiece to move forward along a first direction according to the moving distance so as to position the workpiece in a centering way.

When the centering positioning device works, the first driving piece drives the propping piece to move, the propping piece pushes the workpiece to move along the negative direction of the first direction, the propping piece is matched with the bearing assembly and clamps and fixes the workpiece, then the distance between the propping piece and the workpiece is measured through the ranging assembly, namely the moving distance of the propping piece is measured, and finally the bearing assembly carrying the workpiece is driven to move along the positive direction of the first direction according to the moving distance of the propping piece measured by the ranging assembly. Therefore, the distance measuring assembly measures the distance of the negative movement of the propping piece along the first direction when the propping piece and the bearing component clamp the workpiece, and then the transfer component drives the bearing component bearing the workpiece to move along the positive direction along the first direction according to the moving distance of the propping piece, so that the central axis of the workpiece coincides with the central axis of the centering positioning device, the position of the central axis of the workpiece is obtained, the centering positioning of the workpiece is facilitated, and the centering positioning precision of the workpiece is improved.

It will be appreciated that when one side of the workpiece in the first direction abuts against the carrying component and the abutting component is located at the initial position, assuming that the distance between the abutting component and the other side of the workpiece in the first direction is a, the first driving component drives the abutting component to move along the negative direction of the first direction by a distance a so as to match the abutting component with the carrying component and clamp the workpiece, at this time, the central axis of the workpiece is offset by a distance a/2 along the negative direction of the first direction compared with the central axis of the centering device, and the transferring component drives the carrying component carrying the workpiece to move along the positive direction of the first direction by a distance a/2 so as to enable the central axis of the workpiece to coincide with the central axis of the centering device, thereby obtaining the position of the central axis of the workpiece, so that an external processing device (not shown) processes the workpiece based on the central axis of the workpiece.

In some embodiments, the load bearing assembly comprises:

the bearing plate is used for bearing the workpiece, and the first driving piece is connected to the bearing plate;

the first stop piece is arranged at intervals along the first direction and is used for being matched with the abutting piece to abut against two opposite sides of the workpiece.

In some embodiments, the carrier assembly further comprises:

a second stopper;

the elastic piece is arranged at intervals with the second stop piece along a second direction perpendicular to the first direction, and the second stop piece and the elastic piece are used for propping against the workpiece along the second direction.

In some embodiments, the resilient member comprises:

the fixed body is connected to the bearing plate and is provided with a sliding hole;

one end of the movable body slides in the sliding hole, and the other end of the movable body extends out of the sliding hole and is used for supporting the workpiece;

and the elastic body is accommodated in the sliding hole, one end of the elastic body is propped against the bottom wall of the sliding hole, and the other end of the elastic body is propped against one end of the movable body.

In some embodiments, the transfer assembly comprises:

the base is connected with the distance measuring component and is in sliding connection with the bearing component;

the second driving piece is connected with the base and the bearing assembly and is used for driving the bearing assembly to move along the first direction.

In some embodiments, the base includes a base plate and a slide rail extending along the first direction and connected to the base plate;

the bearing assembly comprises a sliding block, and the sliding block is connected with the second driving piece and is connected with the sliding rail in a sliding way.

In some embodiments, the centering device further comprises a pressing assembly coupled to the transfer assembly for pressing the workpiece in a third direction perpendicular to the first direction.

In some embodiments, the compression assembly comprises:

the compressing driving piece is connected to the edge position of the bearing assembly;

the connecting piece is arranged along the direction perpendicular to the compression driving piece, and one end of the connecting piece is connected with the compression driving piece;

and the compressing piece is connected to the other end of the connecting piece, and is arranged towards the bearing assembly and used for compressing the workpiece.

In some embodiments, the ranging assembly comprises:

the first distance measuring sensor is arranged on one side, away from the supporting piece, of the first driving piece along the first direction and is connected with the transfer assembly, and is used for measuring the moving distance of the supporting piece when the supporting piece is matched with the bearing assembly and clamps the supporting piece;

and the controller is used for calculating the moving distance of the bearing assembly according to the moving distance of the abutting piece and controlling the moving assembly to drive the bearing assembly to move.

In some embodiments, the carrying mechanism further comprises a reflecting member, and the reflecting member is connected to the carrying assembly;

the distance measuring assembly further comprises a second distance measuring sensor, wherein the second distance measuring sensor is connected with the transfer assembly and is electrically connected with the controller, and the second distance measuring sensor is arranged along the first direction at intervals with the reflecting piece and is used for being matched with the reflecting piece to measure the moving distance of the bearing assembly.

Drawings

Fig. 1 is a schematic structural view of a positioning device according to an embodiment of the present utility model when a workpiece is not clamped by a supporting member at an initial position.

Fig. 2 is a schematic structural view of the positioning device when the workpiece is clamped by the abutting piece according to the embodiment of the utility model.

Fig. 3 is an exploded view of the positioning device in fig. 1.

Fig. 4 is a schematic structural view of the elastic member in fig. 3.

Fig. 5 is a schematic structural view of the pressing assembly in fig. 3.

Description of the main reference signs

Centering positioning device 10

Transfer unit 11

Base 111

Bottom plate 1111

Slide 1112

Second driving member 112

Carrying mechanism 12

Bearing assembly 121

Bearing plate 1211

First stopper 1212

Second stopper 1213

Elastic piece 1214

Fixed body 1214a

Movable body 1214b

Elastomer 1214c

Slide hole 1214d

Slider 1215

Holding piece 122

First driving member 123

Reflector 124

Distance measuring assembly 13

First distance measuring sensor 131

Second distance measuring sensor 132

Controller 133

Compression assembly 14

Compression driving member 141

Connecting piece 142

Pressing member 143

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

For convenience of description, a three-dimensional coordinate system is added to fig. 1 and 2, specifically, the direction of the X axis is the first direction, that is, the setting direction of the sliding rail 1112, the direction of the Y axis is the second direction, that is, the setting direction of the elastic member 1214 and the second stop member 1213, and the direction of the Z axis is the third direction, that is, the direction of the pressing assembly 14 for fixing the workpiece 20, where the direction indicated by +x is the positive direction of the first direction, that is, the moving direction of the second driving member 112 when driving the carrying mechanism 12 and positioning the workpiece 20, and the direction indicated by-X is the negative direction of the first direction, that is, the moving direction when the abutting member 122 clamps the workpiece 20.

Referring to fig. 1 and fig. 2, an embodiment of the present utility model provides a centering and positioning device 10, which includes a transfer component 11, a carrying mechanism 12, and a ranging component 13. The workpiece 20 may be a cell phone case.

In some embodiments, the carrying mechanism 12 includes a carrying component 121, a supporting component 122 and a first driving component 123, the carrying component 121 is used for carrying the workpiece 20 and is connected to the transferring component 11, the first driving component 123 is connected to the supporting component 122 and the carrying component 121, the first driving component 123 is used for driving the supporting component 122 to move so that the supporting component 122 pushes the workpiece 20 to move in a negative direction along a first direction, the supporting component 122 is matched with the carrying component 121 to clamp the workpiece 20, the ranging component 13 is arranged on one side of the first driving component 123 away from the supporting component 122 along the first direction and is connected to the transferring component 11, and is used for measuring a moving distance of the supporting component 122 when the supporting component 122 is matched with the carrying component 121 and clamps the workpiece 20, and the transferring component 11 is used for driving the carrying component 121 carrying the workpiece 20 to move in a positive direction along the first direction according to the moving distance so as to position the workpiece 20 in a centering manner. The first driving member 123 may be a cylinder, for example.

When the centering and positioning device 10 works, the first driving member 123 drives the abutting member 122 to move, and the abutting member 122 pushes the workpiece 20 to move in the negative direction along the first direction, so that the abutting member 122 is matched with the bearing assembly 121 and clamps and fixes the workpiece 20. Then, the distance moved by the abutment 122 from the initial position to the abutment of the workpiece 20, i.e., the moving distance of the abutment 122, is measured by the distance measuring assembly 13. Finally, according to the movement distance of the abutment 122 measured by the ranging assembly 13, the transfer assembly 11 drives the carrying assembly 121 carrying the workpiece 20 to move forward along the first direction. In this way, the distance measuring assembly 13 measures the distance of the negative movement of the supporting member 122 along the first direction when the supporting member 122 and the carrying member 121 clamp the workpiece 20, and then, the carrying member 121 carrying the workpiece 20 is driven to move positively along the first direction by the transfer member 11 according to the moving distance of the supporting member 122, so that the central axis of the workpiece 20 coincides with the central axis of the centering positioning device, and the position of the central axis of the workpiece 20 is obtained, so that the centering positioning of the workpiece 20 is facilitated to obtain higher centering positioning precision, and the centering positioning precision of the workpiece 20 is improved.

Referring to fig. 1, it can be understood that, when one side of the workpiece 20 in the first direction abuts against the carrying assembly 121 and the abutting element 122 is located at the initial position, assuming that a distance between the abutting element 122 and the other side of the workpiece 20 in the first direction is a, the first driving element 123 drives the abutting element 122 to move negatively along the first direction by a distance a, so that the abutting element 122 is engaged with the carrying assembly 121 and clamps the workpiece 20. At this time, the central axis of the workpiece 20 is offset by a distance a/2 in the negative direction along the first direction compared with the central axis of the centering and positioning device 10, and the transfer assembly 11 drives the carrying assembly 121 carrying the workpiece 20 to move a distance a/2 in the positive direction along the first direction so that the central axis of the workpiece 20 coincides with the central axis of the centering and positioning device 10, thereby obtaining the position of the central axis of the workpiece 20, so that an external processing device (not shown) processes the workpiece based on the central axis of the workpiece 20.

Referring to fig. 3, in some embodiments, the carrier assembly 121 includes a carrier plate 1211 and a first stopper 1212, the carrier plate 1211 is used for carrying the workpiece 20, the first driving member 123 is connected to the carrier plate 1211, and the first stopper 1212 and the supporting member 122 are disposed at intervals along the first direction and are used for being matched with the supporting member 122 to support opposite sides of the workpiece 20.

In this way, the abutting piece 1212 and the abutting piece 122 are matched, so that the abutting piece 122 and the first abutting piece 1212 abut against the workpiece 20 in the first direction respectively, rapid clamping and fixing of the workpiece 20 are achieved, and fixing efficiency of the workpiece 20 is improved.

In some embodiments, the carrier assembly 121 further includes a second stop 1213 and an elastic member 1214, where the elastic member 1214 and the second stop 1213 are disposed at intervals along a second direction perpendicular to the first direction, and the second stop 1213 and the elastic member 1214 are used to support the workpiece 20 in the second direction. The elastic member 1214 in this embodiment may be a rubber block.

In this way, the second stop 1213 and the elastic member 1214 respectively support the two opposite sides of the workpiece 20 in the second direction, so as to fix the workpiece 20 in the second direction in an auxiliary manner, so as to further improve the stability of the centering positioning device 10 when fixing the workpiece 20.

Referring to fig. 4, in some embodiments, the elastic member 1214 includes a fixed body 1214a, a movable body 1214b and an elastic body 1214c, wherein the fixed body 1214a is connected to the supporting plate 1211, and is provided with a sliding hole 1214d, one end of the movable body 1214b slides in the sliding hole 1214d, the other end of the movable body 1214b extends out of the sliding hole 1214d for supporting the workpiece 20, the elastic body 1214c is accommodated in the sliding hole 1214d, one end of the elastic body 1214c supports against the bottom wall of the sliding hole 1214d, and the other end of the elastic body 1214c supports against one end of the movable body 1214 b. Illustratively, the elastomer 1214c may be a spring.

In this way, the elastic body 1214c pushes the movable body 1214b to elastically abut against the workpiece 20, and the elastic member 1214 abuts against the workpiece 20 through elasticity, so as to reduce abrasion to the workpiece 20, improve the processing yield of the workpiece 20, and push the movable body 1214b through the elastic body 1214c to quickly abut against and fix the workpiece 20, thereby improving the fixing efficiency of the workpiece 20 in the second direction.

Referring to fig. 3, in some embodiments, the transfer assembly 11 includes a base 111 and a second driving member 112, the base 111 is connected to the ranging assembly 13 and slidably connected to the carrying assembly 121, and the second driving member 112 is connected to the base 111 and the carrying assembly 121 and is used for driving the carrying assembly 121 to move along the first direction. The second driving member 112 may be a cylinder, for example.

In this way, by slidably connecting the bearing assembly 121 with the base 111, when the second driving member 112 drives the bearing assembly 121 to move along the first direction, the abrasion between the bearing assembly 121 and the base 111 is reduced, and the bearing assembly 121 is supported by the base 111, so that the stability of the bearing assembly 121 during moving is improved.

In some embodiments, the base 111 includes a base 1111 and a sliding rail 1112, the sliding rail 1112 extends along a first direction and is connected to the base 1111, the bearing assembly 121 includes a sliding block 1215, and the sliding block 1215 is connected to the second driving member 112 and is slidably connected to the sliding rail 1112. In the present embodiment, the number of the sliding rails 1112 and the sliding blocks 1215 is two.

In this way, the base 111 and the bearing component 121 are slidably connected through the sliding rail 1112 and the sliding block 1215, so that the stability of the base 111 and the bearing component 121 during sliding is better, and the structure is simple.

Referring to fig. 5, in some embodiments, the centering and positioning device 10 further includes a pressing assembly 14, where the pressing assembly 14 is connected to the transferring assembly 11, and is configured to press the workpiece 20 in a third direction perpendicular to the first direction.

In this way, the workpiece 20 can be pressed and fixed in the third direction by the pressing assembly 14, so that the workpiece 20 is fixed in the third direction, and the stability of the workpiece 20 during processing is further improved.

Referring to fig. 5, in some embodiments, the pressing assembly 14 includes a pressing driving member 141, a connecting member 142 and a pressing member 143, the pressing driving member 141 is connected to an edge position of the carrying assembly 121, the connecting member 142 is disposed along a direction perpendicular to the pressing driving member 141, one end of the connecting member 142 is connected to the pressing driving member 141, the pressing member 143 is connected to the other end of the connecting member 142, and the pressing member 143 is disposed towards the carrying assembly 121 for pressing the workpiece 20. Illustratively, the compression driver 141 may be a rotary telescopic drive cylinder.

In this way, the connecting piece 142 is driven to rotate by the pressing driving piece 141, the connecting piece 142 drives the pressing piece 143 to rotate to the upper side of the workpiece 20, then the connecting piece 142 is driven by the pressing driving piece 141 to move along the third direction, the connecting piece 142 drives the pressing piece 143 to move along the third direction until the pressing piece 143 abuts against the upper end face of the workpiece 20, so that the workpiece 20 is fast pressed and fixed in the third direction, and when the workpiece 20 is fixed by the pressing assembly 14, the operation steps are simple and the fixing efficiency is high.

Referring to fig. 3, in some embodiments, the ranging assembly 13 includes a first ranging sensor 131, the first ranging sensor 131 is disposed on a side of the first driving member 123 away from the supporting member 122 along the first direction and connected to the transferring assembly 11, and is used for measuring a moving distance of the supporting member 122 when the supporting member 122 is matched with the carrying assembly 121 and clamps the supporting member, and the transferring assembly 11, the first driving member 123 and the first ranging sensor 131 are all electrically connected to a controller 133, wherein the controller 133 is used for calculating the moving distance of the carrying assembly 121 according to the moving distance of the supporting member 122 and controlling the transferring assembly 11 to drive the carrying assembly 121 to move. The controller 133 may be a microcomputer, for example.

In this way, the first distance measuring sensor 131 measures the distance between the first distance measuring sensor 131 and the first laser sensor when the first distance measuring sensor 131 initially positions the supporting member 122, then the first distance measuring sensor 131 measures the distance between the supporting member 122 and the first distance measuring sensor 131 when the supporting member 122 is matched with the carrying assembly 121 and the workpiece 20 is clamped in the first direction, and the controller 133 can calculate the moving distance of the supporting member 122 according to the difference between the distance between the supporting member 122 and the first laser sensor after moving and the distance between the supporting member 122 and the first distance measuring sensor 131 before moving, so that the moving distance of the supporting member 122 can be measured quickly through the first laser sensor, and the measuring accuracy is higher.

Referring to fig. 3, in some embodiments, the carrying mechanism 12 further includes a reflecting member 124, the reflecting member 124 is connected to the carrying assembly 121, the ranging assembly 13 further includes a second ranging sensor 132, and the second ranging sensor 132 is connected to the transferring assembly 11 and electrically connected to the controller 133, and is disposed at intervals along the first direction with the reflecting member 124, so as to cooperate with the reflecting member 124 to measure the moving distance of the carrying assembly 121.

In this way, when the centering positioning device 10 performs centering positioning on the previous workpiece 20, the second ranging sensor 132 and the reflecting element 124 are used for conveniently measuring the moving distance of the bearing component 121, so that the second driving element 112 drives the bearing component 121 to reversely move by the same distance according to the moving distance of the bearing component 121, and the bearing component 121 is reset, so that centering positioning is performed on the next group of workpieces 20, and automatic and rapid resetting of the bearing component 121 is conveniently realized through the second laser sensor, so that the efficiency of positioning the workpieces 20 by the centering positioning device 10 is improved.

The above-described operation of the centering device 10 is generally as follows:

first, the workpiece 20 is placed on the carrier plate 1211, the second abutting piece 122 and the elastic piece 1214 are engaged with each other, and the workpiece 20 is fixed in the second direction, and the workpiece 20 is fixed in the third direction by the pressing assembly 14;

then, the first driving member 123 drives the abutting member 122 to move along the first direction, and the abutting member 122 abuts against one side of the workpiece 20 and drives the workpiece 20 to move until the other side of the workpiece 20 abuts against the first stop member 1212, so as to clamp and fix the workpiece 20;

finally, the distance measuring assembly 13 measures the moving distance of the supporting member 122, and the second driving member 112 drives the bearing assembly 121 bearing the workpiece 20 to reversely move by one half the moving distance of the supporting member 122 according to the moving distance of the supporting member 122, so that the centering and positioning of the workpiece 20 are realized.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. A split positioning device, comprising:

a transfer assembly;

the bearing mechanism comprises a bearing assembly, a supporting piece and a first driving piece, wherein the bearing assembly is used for bearing a workpiece and is connected with the transfer assembly, the first driving piece is connected with the supporting piece and the bearing assembly, and the first driving piece is used for driving the supporting piece to move so that the supporting piece pushes the workpiece to move along the negative direction of a first direction and enables the supporting piece to be matched with the bearing assembly to clamp the workpiece;

the distance measuring assembly is arranged on one side, away from the supporting piece, of the first driving piece along the first direction and is connected with the transfer assembly, and is used for measuring the moving distance of the supporting piece when the supporting piece is matched with the bearing assembly and clamps the workpiece; wherein,,

the transfer assembly is used for driving the bearing assembly bearing the workpiece to move forward along a first direction according to the moving distance so as to position the workpiece in a centering way.

2. The split positioning device as claimed in claim 1, wherein said carrier assembly comprises:

the bearing plate is used for bearing the workpiece, and the first driving piece is connected to the bearing plate;

the first stop piece is arranged at intervals along the first direction and is used for being matched with the abutting piece to abut against two opposite sides of the workpiece.

3. The split positioning device as defined in claim 2, wherein said carrier assembly further comprises:

a second stopper;

the elastic piece is arranged at intervals with the second stop piece along a second direction perpendicular to the first direction, and the second stop piece and the elastic piece are used for propping against the workpiece along the second direction.

4. A split positioning device as claimed in claim 3, wherein said resilient member comprises:

the fixed body is connected to the bearing plate and is provided with a sliding hole;

one end of the movable body slides in the sliding hole, and the other end of the movable body extends out of the sliding hole and is used for supporting the workpiece;

and the elastic body is accommodated in the sliding hole, one end of the elastic body is propped against the bottom wall of the sliding hole, and the other end of the elastic body is propped against one end of the movable body.

5. The split positioning device as claimed in claim 1, wherein said transfer assembly comprises:

the base is connected with the distance measuring component and is in sliding connection with the bearing component;

the second driving piece is connected with the base and the bearing assembly and is used for driving the bearing assembly to move along the first direction.

6. The split positioning apparatus as claimed in claim 5, wherein,

the base comprises a bottom plate and a sliding rail, and the sliding rail extends along the first direction and is connected with the bottom plate;

the bearing assembly comprises a sliding block, and the sliding block is connected with the second driving piece and is connected with the sliding rail in a sliding way.

7. The split positioning device of claim 1,

the centering positioning device further comprises a pressing assembly, wherein the pressing assembly is connected with the transfer assembly and used for pressing the workpiece in a third direction perpendicular to the first direction.

8. The split positioning device as set forth in claim 7 wherein said compression assembly comprises:

the compressing driving piece is connected to the edge position of the bearing assembly;

the connecting piece is arranged along the direction perpendicular to the compression driving piece, and one end of the connecting piece is connected with the compression driving piece;

and the compressing piece is connected to the other end of the connecting piece, and is arranged towards the bearing assembly and used for compressing the workpiece.

9. The split positioning device as set forth in claim 1, wherein said ranging assembly comprises:

the first distance measuring sensor is arranged on one side, away from the supporting piece, of the first driving piece along the first direction and is connected with the transfer assembly, and is used for measuring the moving distance of the supporting piece when the supporting piece is matched with the bearing assembly and clamps the supporting piece;

and the controller is used for calculating the moving distance of the bearing assembly according to the moving distance of the abutting piece and controlling the moving assembly to drive the bearing assembly to move.

10. The split positioning device of claim 9,

the bearing mechanism further comprises a reflecting piece, and the reflecting piece is connected to the bearing assembly;

the distance measuring assembly further comprises a second distance measuring sensor, wherein the second distance measuring sensor is connected with the transfer assembly and is electrically connected with the controller, and the second distance measuring sensor is arranged along the first direction at intervals with the reflecting piece and is used for being matched with the reflecting piece to measure the moving distance of the bearing assembly.

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