CN110744288A

CN110744288A - Positioning device

Info

Publication number: CN110744288A
Application number: CN201911106304.5A
Authority: CN
Inventors: 黄少锋
Original assignee: Dongguan Wisdom Photoelectric Technology Co Ltd
Current assignee: Dongguan Wisdom Photoelectric Technology Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-02-04
Anticipated expiration: 2039-11-13
Also published as: CN110744288B

Abstract

The invention relates to a positioning device, comprising: locating plate and pressing components. The positioning plate is used for bearing a workpiece; the lamination assembly comprises: at least one stitching arm; the pressfitting arm includes: the device comprises a rotating seat, a swing arm connected to the rotating seat, a pressing driver connected with the swing arm, and a pressure head installed on the swing arm; the pressure head is provided with a detachable insert; the pressing driver is used for driving the swing arm to rotate on the rotating seat; the pressure head moves along with the swing arm and extrudes a workpiece placed on the positioning plate through the insert. Above-mentioned positioner, according to the regional shape and the position of location of work piece, can change the accurate extrusion of corresponding mold insert in order to realize small area or point to point formula to the oscillating setting of swing arm makes the pressure head can be according to the work piece location demand of difference, exerts the effort of equidirectional, thereby satisfies the pressfitting location demand of the meticulous and complicated work piece of structure.

Description

Positioning device

Technical Field

The invention relates to the technical field of industrial manufacturing equipment, in particular to a positioning device.

Background

In industrial manufacturing, it is often necessary to position a workpiece, and the accuracy of the positioning affects the accuracy of the workpiece processing. With the development of the times, the variety of novel high-precision small elements is diversified, and the positioning requirement on the workpiece is higher. For high-grade electronic small components, precision positioning needs to be realized in the processes of hot pressing, bonding, riveting and the like, and the problems of difficult clamping, reduced clamping precision and the like are caused particularly when inclined planes exist due to the fine and complex structure of workpieces.

Traditional positioner sets up mobilizable top board mostly, carries out the extrusion of large tracts of land to the work piece through the top board, to the work piece of the meticulous and complicated structure, and its positioning accuracy can't satisfy the demand.

Disclosure of Invention

Based on the positioning device, the corresponding insert can be replaced according to the shape and the position of the positioning area of the workpiece to realize small-area or point-to-point precise extrusion, and the swinging type arrangement of the swinging arm enables the pressing head to apply acting forces in different directions according to different workpiece positioning requirements, so that the pressing and positioning requirements of the workpiece with a fine and complex structure are met.

A positioning device, comprising:

positioning a plate; the positioning plate is used for bearing a workpiece; and

pressing the components; the lamination assembly comprises: at least one stitching arm; the pressfitting arm includes: the device comprises a rotating seat, a swing arm connected to the rotating seat, a pressing driver connected with the swing arm, and a pressure head installed on the swing arm; the pressure head is provided with a detachable insert; the pressing driver is used for driving the swing arm to rotate on the rotating seat; the pressure head moves along with the swing arm and extrudes a workpiece placed on the positioning plate through the insert.

When the positioning device works, a workpiece is placed on the positioning plate for initial positioning. Then, the pressing arm of the pressing assembly is started, the pressing driver drives the swing arm to rotate, the pressing head rotates to a preset pressing position along with the swing arm, and the insert is extruded in a positioning area on the workpiece. According to the shape and the position of the positioning area of the workpiece, the corresponding insert can be replaced to realize small-area or point-to-point accurate extrusion, and the swing type arrangement of the swing arm enables the pressure head to apply acting forces in different directions according to different workpiece positioning requirements, so that the pressing and positioning requirements of the workpiece with a fine and complex structure are met.

In one embodiment, the number of stitching arms is three and is distributed around the positioning plate in the form of three points. The three pressing arms are adopted to simultaneously extrude and position the workpiece, and a principle that three points determine a plane is utilized to provide stable pressing acting force for the workpiece.

In one embodiment, the stitching arm further comprises: a first auxiliary positioning member; the first auxiliary positioning member includes: the first positioning driver is arranged on the pressure head, and the first adjusting block is connected with the first positioning driver. In order to meet the requirement of workpiece pressing and positioning, a first auxiliary positioning part can be arranged on the pressing arm, the first positioning driver is utilized to drive the first adjusting block to move so as to abut against the workpiece, and the positioning accuracy and stability are improved on the basis of the insert.

In one embodiment, the stitching arm further comprises: a second auxiliary positioning member; the second auxiliary positioning member includes: the second positioning driver is arranged on the swing arm, and the second adjusting block is connected with the second positioning driver; the second adjusting block is hinged on the swing arm. In order to meet the requirement of workpiece pressing and positioning, a second auxiliary positioning part can be arranged on the pressing arm, a second positioning driver is utilized to drive a second adjusting block to overturn so as to abut against the workpiece, and the positioning accuracy and stability are improved on the basis of the insert.

In one embodiment, the stitching arm further comprises: a limiting block; the limiting block is provided with a limiting groove used for limiting the swing arm. When the swing arm swings to a preset pressing position, the swing arm is limited by the limiting groove on the limiting block, so that the insert on the pressure head can be accurately extruded in a positioning area of a workpiece.

In one embodiment, the stitching arm further comprises: a first position sensor connected to the limiting block; the first position sensor is used for detecting the distance between the swing arm and the limiting block so as to judge whether the swing arm swings to a preset pressing position. When the first position sensor detects that the swing arm swings to a preset pressing position, the first position sensor can send a brake electric signal to the pressing driver, so that automatic operation is realized.

In one embodiment, the positioning device further comprises: a heating assembly; the heating assembly includes: the device comprises a sliding seat, a heat conducting block arranged on the sliding seat and a transverse moving driver connected with the sliding seat; the transverse moving driver is used for driving the sliding seat to move so as to adjust the distance between the heat conducting block and the positioning plate. The heating assembly is arranged aiming at the condition that the workpiece needs to be heated when in pressing and positioning. When the pressing arm presses and positions the workpiece, the transverse moving driver drives the sliding seat to move towards the workpiece placed on the positioning plate, the heat conducting block is made to contact with the workpiece, and heat is generated by the heat conducting block and is transmitted to the workpiece.

In one embodiment, the heating assembly further comprises: the connecting rod is hinged on the mounting seat; one end of the connecting rod is hinged with the sliding seat, and the other end of the connecting rod is hinged with the transverse moving driver. The crank driving structure is formed among the mounting seat, the connecting rod, the sliding seat and the transverse moving driver by utilizing the mounting seat and the connecting rod, so that the relative position between the transverse moving driver and the sliding seat is adjusted, and the mounting compactness among all parts of equipment is improved.

In one embodiment, the heating assembly further comprises: a second position sensor connected to the slide; the second position sensor is used for detecting the distance between the sliding seat and the mounting seat so as to judge whether the sliding seat slides to a preset heating position. When the second position sensor detects that the sliding seat reaches the preset heating position, a brake electric signal can be sent to the transverse moving driver, and therefore automatic operation is achieved.

In one embodiment, the positioning plate is provided with a plurality of profile-arranged support posts. The appointed position on the work piece is supported by the support column of the profile modeling on the positioning plate, and the support column can be arranged corresponding to the position of the insert, so that the local area of the work piece can be stressed in a balanced manner when the work piece is positioned by extrusion, and the work piece is not easy to deform.

Drawings

FIG. 1 is a schematic view of a positioning device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a positioning plate in the positioning device shown in FIG. 1;

FIG. 3 is a schematic view of a pressing assembly in the positioning apparatus shown in FIG. 1;

FIG. 4 is a schematic view of a first stitching arm of the stitching assembly shown in FIG. 3;

FIG. 5 is a side view of the first stitching arm shown in FIG. 4;

FIG. 6 is a schematic view of a second stitching arm of the stitching assembly shown in FIG. 3;

FIG. 7 is a side view of the second stitch arm shown in FIG. 6;

FIG. 8 is a schematic view of a first auxiliary positioning member in the second pressing arm shown in FIG. 6;

FIG. 9 is a side view of the first auxiliary positioner shown in FIG. 8;

FIG. 10 is a schematic view of a third stitching arm of the stitching assembly shown in FIG. 3;

FIG. 11 is a schematic view of a second auxiliary positioning member of the third pressing arm shown in FIG. 10;

FIG. 12 is a schematic view of a heating assembly in the positioning device shown in FIG. 1;

fig. 13 is a state view of the positioning device shown in fig. 1.

The meaning of the reference symbols in the drawings is:

100-a positioning device;

10-positioning plate, 11-supporting column;

20-press-fit assembly, 21-first press-fit arm, 211-first rotary base, 212-first swing arm, 213-first press-fit driver, 214-first press head, 2141-first insert, 215-first stop block, 216-first proximity switch, 22-second press-fit arm, 221-second rotary base, 222-second swing arm, 223-second press-fit driver, 224-second press head, 2241-second insert, 225-first auxiliary positioning element, 2251-first positioning driver, 2252-first adjusting block, 226-second stop block, 227-second proximity switch, 23-third press-fit arm, 231-third rotary base, 232-third swing arm, 233-third press-fit driver, 234-third press head, 2341-third insert, 235-a second auxiliary positioning piece, 2351-a second positioning driver, 2352-a second adjusting block, 236-a third limiting block, 237-a third proximity switch;

30-a heating assembly, 31-a sliding seat, 32-a heat-conducting block, 33-a transverse moving driver, 34-a linear guide rail, 35-a mounting seat, 36-a connecting rod, 37-a fourth proximity switch;

200-workpiece.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 13, a positioning device 100 according to an embodiment of the present invention is shown.

As shown in fig. 1, the positioning apparatus 100 includes: a positioning plate 10 and a pressing component 20. The positioning plate 10 is used for carrying the workpiece 200, and the pressing assembly 20 is used for pressing a positioning area of the workpiece 200 placed on the positioning plate 10.

Hereinafter, the positioning device 100 is further described with reference to fig. 2 to 13 on the basis of fig. 1.

As shown in fig. 2, in the present embodiment, the positioning plate 10 is provided with a plurality of support columns 11 arranged in a contour. The designated position on the workpiece 200 is supported by the profiling supporting column 11 on the positioning plate 10, for example, the designated position can be arranged corresponding to the area of the workpiece 200 to be pressed, so that the local area of the workpiece 200 can be stressed in a balanced manner when being pressed and positioned, and deformation is not easy to occur.

As shown in fig. 3, the pressing assembly 20 includes: at least one stitching arm. The pressfitting arm includes: the rotary table comprises a rotary base, a swing arm connected to the rotary base, a press-fit driver connected with the swing arm, and a pressure head installed on the swing arm. The pressure head is provided with a detachable insert. The pressing driver is used for driving the swing arm to rotate on the rotary seat. The ram follows the swing arm and presses the workpiece 200 placed on the locating plate 10 through the insert. Based on roating seat and swing arm, establish lever structure between pressfitting driver and pressure head for the pressure head can follow the rotation of swing arm and remove, correspondingly, installs the mold insert on the pressure head and also can remove along with the pressure head, through the angle of adjustment swing arm, can give the extrusion effort of work piece 200 equidirectional. The insert, as a detachable device, may be adjusted according to the positioning area of different workpieces 200, thereby achieving accurate positioning.

The number of nip arms can be adjusted according to the size of the workpiece 200, or the size or shape of the positioning area of the workpiece 200. At least one stitching arm is provided. In the present embodiment, as shown in fig. 3, the number of the pressing arms is three and is distributed around the positioning plate 10 in the form of three points. Three pressing arms are adopted to simultaneously extrude and position the workpiece 200, and a principle that three points determine a plane is utilized to provide stable pressing acting force for the workpiece 200. For convenience of illustration, the three pressing arms are respectively defined as a first pressing arm 21, a second pressing arm 22, and a third pressing arm 23, wherein the first pressing arm 21 and the second pressing arm 22 are disposed oppositely, the third pressing arm 23 is disposed between the first pressing arm 21 and the second pressing arm 22, and the three pressing arms form a triangular structure, so that when the workpiece 200 is pressed and positioned, the three pressing heads can perform a triple composite pressing action on the workpiece 200.

As shown in fig. 4 and 5, in the present embodiment, the first stitch arm 21 includes: the first swing arm driving mechanism comprises a first rotating base 211, a first swing arm 212 connected to the first rotating base 211, a first pressing driver 213 connected to the first swing arm 212, and a first pressing head 214 installed on the first swing arm 212. The first ram 214 is provided with a removable first insert 2141. The first pressing driver 213 is used to drive the first swing arm 212 to rotate on the first rotating base 211. The first ram 214 follows the first swing arm 212 and presses the workpiece 200 placed on the positioning plate 10 by the first insert 2141. As shown in fig. 4, in the present embodiment, the first pressing driver 213 is a cylindrical air cylinder, and a piston rod of the air cylinder is used to hinge the first swing arm 212 and drive the first swing arm 212 to rotate around the first rotating base 211. The first ram 214 is connected to the free end of the first swing arm 212, and the first insert 2141 is a cylindrical insert pin.

As shown in fig. 6 and 7, in the present embodiment, the second stitch arm 22 includes: a second rotary base 221, a second swing arm 222 connected to the second rotary base 221, a second pressing driver 223 connected to the second swing arm 222, and a second pressing head 224 mounted on the second swing arm 222. Second ram 224 is provided with a removable second insert 2241. The second pressing driver 223 is used to drive the second swing arm 222 to rotate on the second rotating base 221. Second ram 224 follows second swing arm 222 and presses work piece 200 placed on positioning plate 10 through second insert 2241. As shown in fig. 6, in the present embodiment, the second pressing driver 223 is a cylindrical air cylinder, and a piston rod of the air cylinder is used to hinge the second swing arm 222 and drive the second swing arm 222 to rotate around the second rotating base 221. A second ram 224 is attached to the free end of the second swing arm 222 and a second insert 2241 is a cylindrical insert.

As shown in fig. 10, in the present embodiment, the third stitch arm 23 includes: a third rotary base 231, a third swing arm 232 connected to the third rotary base 231, a third stitching driver 233 connected to the third swing arm 232, and a third ram 234 mounted on the third swing arm 232. The third ram 234 is provided with a removable third insert 2341. The third pressing driver 233 is used to drive the third swing arm 232 to rotate on the third rotating base 231. The third ram 234 follows the third swing arm 232 and presses the workpiece 200 placed on the positioning plate 10 by the third insert 2341. As shown in fig. 6, in the present embodiment, the third pressing driver 233 is a cylindrical air cylinder, and a piston rod of the air cylinder is used to hinge the third swing arm 232 and drive the third swing arm 232 to rotate around the third rotating base 231. The third ram 234 is connected to the free end of the third swing arm 232, and the third insert 2341 is a columnar insert pin.

Furthermore, in order to meet various special positioning requirements, auxiliary positioning tools can be arranged on the pressing arm.

For example, as shown in fig. 6 and 7, in the present embodiment, the second stitch arm 22 further includes: a first auxiliary positioning member 225. As shown in fig. 8 and 9, the first auxiliary positioning member 225 includes: a first positioning driver 2251 mounted on the second ram 224 and a first adjustment block 2252 connected to the first positioning driver 2251. In order to meet the requirement of pressing and positioning the workpiece 200, a first auxiliary positioning element 225 may be disposed on the second pressing arm 22, and the first positioning driver 2251 is utilized to drive the first adjusting block 2252 to move to abut against the workpiece 200, so that the positioning accuracy and stability are improved on the basis of the insert.

Further, as shown in fig. 8 and 9, in the present embodiment, the first positioning actuator 2251 is a finger clamping cylinder, and the first adjusting block 2252 is a wedge of one of the fingers connected to the finger clamping cylinder, and when the finger clamping cylinder is activated, the wedge moves along with the finger clamping cylinder and abuts against the workpiece 200.

For another example, as shown in fig. 10, the third stitching arm 23 further includes: a second auxiliary positioning member 235. As shown in fig. 11, the second auxiliary positioning member 235 includes: a second positioning drive 2351 mounted on the third swing arm 232 and a second conditioning block 2352 connected with the second positioning drive 2351. Second adjustment block 2352 is hinged to third swing arm 232. In order to meet the requirement of pressing and positioning the workpiece 200, a second auxiliary positioning element 235 can be arranged on the third pressing arm 23, the second positioning driver 2351 is utilized to drive the second adjusting block 2352 to overturn to press the workpiece 200, and on the basis of the insert, the positioning accuracy and stability are improved.

Further, as shown in fig. 8 and 9, in the present embodiment, the second positioning driver 2351 is a telescopic cylinder, and the second adjusting block 2352 is a pressing rod hinged on the third swing arm 232, and when a piston rod of the cylinder acts, the pressing rod swings and presses against the workpiece 200.

It should be noted that, the auxiliary positioning member on the pressing arm may be used alone, or a plurality of auxiliary positioning members may be provided for cooperation. For example, in the present embodiment, the first auxiliary positioning element 225 and the second auxiliary positioning element 235 are in a matching relationship, and the pressing rod and the wedge block can respectively press against opposite sides of the workpiece 200 to perform a left-right positioning function.

In order to allow the pressing arm to precisely press the workpiece 200, the pressing arm may be further improved. The pressing arm can further comprise a limiting block, and the limiting block is provided with a limiting groove used for limiting the swing arm. When the swing arm swings to a preset pressing position, the swing arm is limited by the limiting groove on the limiting block, so that the insert on the pressure head can be accurately extruded in a positioning area of the workpiece 200.

For example, as shown in fig. 4, the first pressing arm 21 is provided with a first stopper 215. As shown in fig. 6, the second pressing arm 22 is provided with a second stopper 226. As shown in fig. 10, the third press-fitting arm 23 is provided with a third stopper 236.

In order to achieve automated work, the pressing arm may further comprise: and the first position sensor is connected to the limiting block. The first position sensor is used for detecting the distance between the swing arm and the limiting block so as to judge whether the swing arm swings to a preset pressing position. When the first position sensor detects that the swing arm swings to a preset pressing position, the first position sensor can send a brake electric signal to the pressing driver, so that automatic operation is realized.

For example, as shown in fig. 4, the first pressing arm 21 is provided with a first proximity switch 216 connected to the first stopper 215. As shown in fig. 6, the second pressing arm 22 is provided with a second proximity switch 227 connected to the second stopper 226. As shown in fig. 10, the third press-fit arm 23 is provided with a third proximity switch 237 connected to the third stopper 236.

For some workpieces 200, heat is required for press-fit positioning. For example, when the work 200 is bonded to the auxiliary material, it is necessary to maintain the pressure under the heating and heat-insulating conditions.

As shown in fig. 1, the positioning apparatus 100 further includes: the assembly 30 is heated. The specific arrangement of the heating assembly 30 can be adjusted according to different heating requirements, and is not limited.

In the present embodiment, an implementation of the heating assembly 30 is provided. As shown in fig. 12, the heating assembly 30 includes: a slider 31, a heat-conducting block 32 mounted on the slider 31, and a traverse actuator 33 connected to the slider 31. The traverse actuator 33 is used to move the slider 31 to adjust the distance between the thermal conductive block 32 and the positioning plate 10. The heating assembly 30 is provided for the case that the workpiece 200 needs to be heated during the press-fitting positioning. When the pressing arm presses and positions the workpiece 200, the traverse actuator 33 drives the slider 31 to move toward the workpiece 200 placed on the positioning plate 10, and the heat conduction block 32 is brought into contact with the workpiece 200, so that heat is generated by the heat conduction block 32 and transferred to the workpiece 200. In the present embodiment, in order to limit the movement locus of the carriage 31 to a straight line, a linear guide 34 slidably connected to the carriage 31 is provided.

Further, as shown in fig. 12, in the present embodiment, the heating assembly 30 further includes: a mounting seat 35 and a connecting rod 36 hinged on the mounting seat 35. One end of the link 36 is hinged to the slide 31 and the other end of the link 36 is hinged to the traverse drive 33. By utilizing the mounting seat 35 and the connecting rod 36, a crank driving structure is formed among the mounting seat 35, the connecting rod 36, the sliding seat 31 and the transverse moving driver 33, the purpose is to adjust the relative position between the transverse moving driver 33 and the sliding seat 31, and the mounting compactness among all parts of the equipment is improved. For example, in the present embodiment, the traverse actuator 33 is a cylindrical air cylinder, a piston rod of the air cylinder is hinged to one end of the link 36, and the slide 31 hinged to the other end of the link 36 is linearly moved by the expansion and contraction of the piston rod of the air cylinder.

In order to realize the automated operation, as shown in fig. 12, in the present embodiment, the heating assembly 30 may further include: a second position sensor attached to the slide 31. The second position sensor is used for detecting the distance between the sliding seat 31 and the mounting seat 35 to judge whether the sliding seat 31 slides to a preset heating position. When the second position sensor detects that the slide carriage 31 reaches a preset heating position, a braking electric signal can be sent to the traverse actuator 33, so that automatic operation is realized. For example, as shown in fig. 12, the second position sensor is a fourth proximity switch 37 mounted on the slider 31.

As shown in fig. 13, the positioning device 100 is operated to place the workpiece 200 on the positioning plate 10 for initial positioning. Then, the pressing arm of the pressing assembly 20 is started, the pressing driver drives the swing arm to rotate, and the pressing head rotates to a preset pressing position along with the swing arm and enables the insert to be extruded on the positioning area of the workpiece 200. According to the shape and the position of the positioning area of the workpiece 200, the corresponding insert can be replaced to realize small-area or point-to-point precise extrusion, and the swing type arrangement of the swing arm enables the pressure head to apply acting forces in different directions according to different positioning requirements of the workpiece 200, so that the pressing and positioning requirements of the workpiece 200 with a fine and complex structure are met.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A positioning device, characterized by: the method comprises the following steps:

positioning a plate; the positioning plate is used for bearing a workpiece; and

pressing the components; the pressing component comprises: at least one stitching arm; the stitch arm includes: the device comprises a rotating seat, a swing arm connected to the rotating seat, a pressing driver connected to the swing arm, and a pressure head installed on the swing arm; the pressure head is provided with a detachable insert; the pressing driver is used for driving the swing arm to rotate on the rotating seat; the pressing head moves along with the swing arm and presses a workpiece placed on the positioning plate through the insert.

2. The positioning device according to claim 1, wherein the stitching arms are three in number and distributed around the positioning plate in the form of three points.

3. The positioning device of claim 1, wherein the stitching arm further comprises: a first auxiliary positioning member; the first auxiliary positioning member includes: the first positioning driver is installed on the pressure head, and the first adjusting block is connected with the first positioning driver.

4. The positioning device of claim 1, wherein the stitching arm further comprises: a second auxiliary positioning member; the second auxiliary positioning member includes: the second positioning driver is arranged on the swing arm, and the second adjusting block is connected with the second positioning driver; the second adjusting block is hinged to the swing arm.

5. The positioning device of claim 1, wherein the stitching arm further comprises: a limiting block; the limiting block is provided with a limiting groove used for limiting the swing arm.

6. The positioning device of claim 5, wherein the stitching arm further comprises: the first position sensor is connected to the limiting block; the first position sensor is used for detecting the distance between the swing arm and the limiting block so as to judge whether the swing arm swings to a preset pressing position.

7. The positioning device of claim 1, further comprising: a heating assembly; the heating assembly includes: the device comprises a sliding seat, a heat conducting block arranged on the sliding seat and a transverse moving driver connected with the sliding seat; the transverse moving driver is used for driving the sliding seat to move so as to adjust the distance between the heat conducting block and the positioning plate.

8. The positioning device of claim 7, wherein the heating assembly further comprises: the connecting rod is hinged on the mounting seat; one end of the connecting rod is hinged with the sliding seat, and the other end of the connecting rod is hinged with the transverse moving driver.

9. The positioning device of claim 8, wherein the heating assembly further comprises: a second position sensor connected to the slide; the second position sensor is used for detecting the distance between the sliding seat and the mounting seat so as to judge whether the sliding seat slides to a preset heating position.

10. The positioning apparatus of claim 1 wherein the positioning plate is provided with a plurality of contoured support posts.