CN217920035U - High-precision workpiece positioning and conveying device - Google Patents

Abstract

A high-precision workpiece positioning and conveying device comprises a material supplementing mechanism, a positioning mechanism and a conveying mechanism, wherein the material supplementing mechanism comprises a first driving part and a horizontally arranged rotary table, and a plurality of box blocks used for stacking workpieces are arranged on the rotary table in a circumferential array manner; the first driving part is in driving connection with the rotary disc so as to drive the rotary disc to rotate; the positioning mechanism comprises a positioning component and a bearing plate arranged beside the turntable, and the bearing plate can correspond to the plurality of box blocks one by one; the positioning component is arranged on the bearing plate and can adjust the position of the workpiece; the conveying mechanism is arranged beside the turntable and the bearing plate, and when the bearing plate corresponds to any box block on the turntable, the conveying mechanism can transfer a workpiece in the corresponding box block to a positioning assembly on the bearing plate for position adjustment; after the workpiece is positioned, the workpiece is transferred to a welding station through a conveying mechanism; therefore, the high-precision workpiece positioning and conveying device can automatically supplement materials to improve the production efficiency, and can also independently position the transferred workpiece to improve the welding precision.

Description

High-precision workpiece positioning and conveying device

Technical Field

The utility model belongs to the technical field of and welding workpiece conveyor, especially, relate to a high accuracy work piece location conveyor.

Background

The welding is a technology for jointing workpieces in a heating, high-temperature or high-pressure mode, when in use, the workpieces to be welded are transferred to a welding station, and then a welding machine is started to weld the workpieces.

In order to improve the working efficiency and the safety, in the prior art, a manual feeding mode is abandoned, workpieces are generally stacked on a workbench, then the workpieces are sucked to a welding station one by using a manipulator with a sucker, and the automation degree is high; however, in practical use, it is found that the operation mode has at least the following disadvantages:

firstly, continuous feeding is not available, and when the stacked workpieces are completely removed by the manipulator, the manipulator needs to be closed and the workpieces need to be stacked again, which may interrupt welding, cause welding inconsistency, and reduce workpiece efficiency.

Secondly, the welding precision is low, and in the process of stacking the workpieces, a certain position deviation possibly exists between every two workpieces, so that the position of the workpiece sucked by the manipulator deviates, and the workpiece cannot be accurately placed on the welding workpiece; it is therefore important to adjust the position of the workpiece before it is transferred to the welding station.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a high accuracy work piece location conveyor can automatic feed supplement to improve production efficiency, can also advance line location alone to the work piece at the in-process that shifts work piece to welding station in addition, improved welding precision.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme:

a high-precision workpiece positioning and conveying device comprises a material supplementing mechanism, a positioning mechanism and a conveying mechanism, wherein the material supplementing mechanism comprises a first driving part and a horizontally arranged rotary table, and a plurality of box blocks used for stacking workpieces are arranged on the rotary table in a circumferential array manner; the first driving part is in driving connection with the rotary disc so as to drive the rotary disc to rotate; the positioning mechanism comprises a positioning component and a bearing plate arranged beside the turntable, and the bearing plate can correspond to the box blocks one by one; the positioning assembly is arranged on the bearing plate and can adjust the position of the workpiece; the conveying mechanism is arranged beside the turntable and the bearing plate, and when the bearing plate corresponds to any box block on the turntable, the conveying mechanism can transfer the workpiece in the corresponding box block to a positioning component on the bearing plate for position adjustment; the conveying mechanism can also transfer the positioned workpieces to a welding station.

Preferably, the first driving part comprises a servo motor, a transmission assembly and a cam divider, and an output shaft of the cam divider is in driving connection with the rotary disc; the output shaft of the servo motor is linked with the input shaft of the cam divider through the transmission assembly to drive the cam divider to operate and drive the rotary disc to intermittently rotate according to a set angle, so that the box blocks on the rotary disc correspond to the bearing plates one by one.

Preferably, the transmission assembly comprises a driving wheel, a transmission belt and a driven wheel, the driving wheel is mounted on an output shaft of the servo motor, the driven wheel is mounted on an input shaft of the cam divider, and the transmission belt is wound on the driving wheel and the driven wheel.

Preferably, the workpiece stacking device further comprises a lifting mechanism, wherein a plurality of box blocks are internally provided with object placing grooves for stacking the workpieces, and the top sides of the box blocks are provided with material taking ports communicated with the object placing grooves and the outside; the rotary disc is also provided with a plurality of top holes which are communicated with the object placing grooves in the box blocks in a one-to-one correspondence manner; the lifting mechanism is arranged below the rotary disc, and when the bearing plate corresponds to any one of the box blocks on the rotary disc, the output end of the lifting mechanism can penetrate through the top hole corresponding to the box block and drive the workpiece stacked in the object placing groove of the box block to move upwards.

Preferably, the lifting mechanism comprises a fixing plate, a screw motor, a sliding seat and a supporting rod; the fixed plate is vertically arranged below the rotary table, and the sliding seat is slidably arranged on the fixed plate; the supporting rod is arranged on the sliding seat and serves as an output end of the lifting mechanism; the screw rod motor is arranged on the fixed plate and is in driving connection with the sliding seat so as to drive the sliding seat to move up and down; when the bearing plate corresponds to any one of the box blocks on the rotary table, the lead screw motor can drive the supporting rod to penetrate through the top hole corresponding to the box block and drive the workpiece stacked in the object placing groove of the box block to move upwards.

Preferably, lifting mechanism still includes first sensor, first sensor install in on the bracing piece and with lead screw motor electric connection, just the vertical design that makes progress of induction end of first sensor to the monitoring corresponds one by one whether there is the work piece in putting the thing groove.

Preferably, the material taking device further comprises a material monitoring mechanism, and the material taking port and the plate surface of the bearing plate are located on the same height plane; the material monitoring mechanism comprises a bracket and a second sensor; the support is arranged beside the turntable and designed corresponding to the bearing plate, the second sensor is arranged on the support and electrically connected with the conveying mechanism, and the sensing end of the second sensor is designed horizontally to monitor whether workpieces exist in the corresponding material taking port; when the turntable rotates, the second sensor can correspond to the material taking ports of the box blocks one by one.

Preferably, the conveying mechanism comprises a mounting plate, a sucker assembly, a transverse moving unit and a longitudinal moving unit, wherein the sucker assembly is mounted on the mounting plate, and can suck and release the workpiece; the longitudinal moving unit is vertically arranged and is in driving connection with the mounting plate so as to drive the sucker assembly to move in the vertical direction; the transverse moving unit is horizontally arranged and is in driving connection with the longitudinal moving unit so as to drive the sucker assembly to move in the horizontal direction; the suction disc assembly can be driven to move back and forth among the material taking port, the bearing plate and the welding station through the longitudinal moving unit and the transverse moving unit.

Preferably, the sucker assembly comprises a first sucker and a second sucker, the first sucker and the second sucker are respectively arranged on two sides of the mounting plate, the first sucker is designed corresponding to the box block, and the second sucker is designed corresponding to the welding station; when the first sucking disc sucks the workpiece in the box block, the second sucking disc synchronously sucks the workpiece subjected to position adjustment by the positioning assembly; when the first sucker transfers the sucked workpiece to the positioning assembly, the second sucker synchronously transfers the sucked workpiece to a welding station.

Preferably, the positioning assembly comprises a stop block, a limiting block and a second driving part, and the stop block is arranged on the bearing plate and corresponds to the first side edge and the second side edge of the workpiece; the limiting blocks are at least provided with two limiting blocks which are arranged on the bearing plate in a sliding manner so as to respectively correspond to the third side edge and the fourth side edge of the workpiece; the second driving part is in driving connection with the two limiting blocks, and the second driving part can drive the two limiting blocks to abut against the third side and the fourth side of the workpiece respectively and drive the first side and the second side of the workpiece to abut against the stop block; or the two limiting blocks are driven to be far away from the workpiece.

Preferably, the second driving part comprises a base, an elastic part and a driving part, the bearing plate is mounted on the base, two fixing blocks are further arranged on the bearing plate, and the two fixing blocks are perpendicular to each other and are respectively designed corresponding to the two limiting blocks; the number of the elastic pieces is two corresponding to the two fixed blocks, one ends of the two elastic pieces are respectively arranged on the two fixed blocks, and the other ends of the two elastic pieces are respectively abutted against the two limiting blocks; the driving piece is arranged on the base and is in driving connection with the two limiting blocks so as to drive the two limiting blocks to be away from the workpiece respectively; two when the elastic component is in conventional state, two the stopper butt respectively the third side and the fourth side of work piece, just the dog butt the first side and the second side of work piece.

Preferably, the elastic member is a spring.

Preferably, the driving piece comprises a driving source, a supporting block and two shifting blocks, and the two shifting blocks are respectively arranged at the bottom ends of the two limiting blocks; the driving source is arranged on the base and is in driving connection with the supporting block so as to drive the supporting block to be abutted against or away from the two shifting blocks; when the supporting block abuts against the two shifting blocks, the limiting columns on the two limiting blocks are far away from the workpiece; the kicking block is kept away from two when dialling fast, two the top of stopper is two respectively the butt under the effect of elastic component the adjacent third side of work piece and fourth side, and drive the first side and the second side butt of work piece the dog.

(III) advantageous effects

The utility model provides a high accuracy work piece location conveyor is used for shifting the work piece through designing conveying mechanism, realizes the continuity feed supplement of work piece through designing feed supplement mechanism for conveying mechanism can constantly shift the work piece to welding station department, avoids the welding to break, has guaranteed the welding continuity and has improved work piece efficiency; and the design of the positioning mechanism can carry out independent position adjustment on the workpiece before being transferred to the welding station, so that the position of the workpiece is accurately positioned, the position of the workpiece is prevented from deviating, the workpiece can be accurately placed on the welding workpiece, and the final welding precision of the workpiece is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and do not constitute a limitation on the invention, and in the drawings:

fig. 1 shows a schematic diagram of the overall structure of the present invention;

fig. 2 shows a part of the structural schematic diagram of the invention;

fig. 3 shows a schematic structural diagram of the conveying mechanism of the present invention;

FIG. 4 shows a first schematic structural diagram of a feeding mechanism of the present invention;

FIG. 5 shows a schematic structural diagram II of the feeding mechanism of the present invention;

fig. 6 shows a schematic structural diagram of the lifting mechanism and the material monitoring mechanism of the present invention;

fig. 7 shows a schematic structural diagram of the positioning mechanism of the present invention;

FIG. 8 shows a top view of FIG. 7;

FIG. 9 showsbase:Sub>A cross-sectional view A-A of FIG. 8;

fig. 10 shows a partial structural schematic diagram of the positioning mechanism of the present invention;

fig. 11 shows a schematic view of a part of the positioning mechanism of the present invention;

fig. 12 shows a schematic view of a part of the positioning mechanism of the present invention.

In the figure: 1 feeding mechanism, 11 first driving part, 111 servo motor, 112 transmission assembly, 1121 driving wheel, 1122 transmission belt, 1123 driven wheel, 113 cam divider, 12 rotating disc, 121 box block, 1210 storage groove, 1211 material taking port, 1212 partition block, 122 top hole, 2 positioning mechanism, 21 positioning assembly, 211 stopper, 212 stopper, 2120 limit column, 212k clamping groove, 213 second driving part, 214 base, 215 elastic member, 216 driving piece, 2161 driving source, 2162 supporting block, 2162m chamfer surface, 2163 poking block, 21630 adjusting groove, 2163k bump, 2163m inclined surface, 22 bearing plate, 221 fixed block, 222 slide rail, 2220 slider, 223 movable notch, 3 conveying mechanism, 31 mounting plate, 32 suction cup assembly, 321 first suction cup, 322 second suction cup, 33 transverse moving unit, 331 first guide rail seat, 332 driving motor, 34 longitudinal moving unit, 341 second guide rail seat, 342 driving cylinder, 4 lifting mechanism, 41 fixed plate, 42 motor, 43, support rod, 44, 45, 5 first guide rail seat, 5 support bracket, 51 and workpiece adjusting sensor, 51 and P sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 7, a high-precision workpiece positioning and conveying device comprises a feeding mechanism 1, a positioning mechanism 2 and a conveying mechanism 3, wherein the feeding mechanism 1 comprises a first driving part 11 and a horizontally arranged rotary table 12, and a plurality of cassette blocks 121 for stacking workpieces P are arranged on the rotary table 12 in a circumferential array; the first driving part 11 is in driving connection with the rotary disc 12 to drive the rotary disc 12 to rotate; the positioning mechanism 2 includes a positioning assembly 21 and a supporting plate 22 disposed beside the turntable 12, the supporting plate 22 can correspond to the plurality of cassettes 121 one by one; the positioning component 21 is disposed on the carrier plate 22 and can adjust the position of the workpiece P; the conveying mechanism 3 is disposed beside the turntable 12 and the loading plate 22 for transferring the workpiece P on the turntable 12 to the loading plate 22 and transferring the workpiece P on the loading plate 22 to the welding station.

Specifically, before use, all the cassette blocks 121 are fully stacked with the workpieces P, so that the workpieces P stacked in each cassette block 121 form a workpiece P stack; for convenience of understanding, in the following embodiments, each of the tray blocks 121 will be referred to as a first tray block 121, a second tray block 121, and the like in order.

When in use, the driving part is started to drive the rotating disc 12 to rotate, so that the first box block 121 is close to and corresponds to the bearing plate 22; at this time, the first driving part 11 stops operating, one of the workpieces P in the stack of workpieces P in the first cassette block 121 is transferred to the positioning component 21 on the carrier plate 22 by the conveying mechanism 3, and the position of the workpiece P is adjusted by the positioning component 21, so that the positioning accuracy of the workpiece P is improved; after the workpiece P is positioned, the workpiece P is transferred to a welding station for welding through the conveying mechanism 3, so that the workpiece P can be adjusted in position before being transferred to the welding station by the aid of the design, and the problem of position deviation of the workpiece P is solved.

Repeating the above operations until all the workpieces P in the first cassette block 121 are welded, and when the conveying mechanism 3 transfers the last workpiece P in the first cassette block 121, the first driving part 11 drives the rotary table 12 to rotate, so that the second cassette block 121 on the rotary table 12 is close to and corresponds to the bearing plate 22, and the conveying mechanism 3 can continue to transfer the workpieces P in the second cassette block 121; meanwhile, the empty first cassette block 121 on the turntable 12 is far away from the carrier plate 22, so that a worker can stack the workpieces P on the first cassette block 121; the workpieces P in each box block 121 can be corresponding to the bearing plate 22 one by repeating the above operations, the design is convenient for the conveying mechanism 3 to take materials, the movement stroke of the conveying mechanism 3 is shortened, and the time is saved; continuous feeding can be realized, and the problem of welding interruption caused by material shortage is solved;

it should be noted that, as can be seen from the above description, at least two or more cassette blocks 121 need to be provided to achieve simultaneous feeding and feeding, and of course, a worker may also set a plurality of cassette blocks 121 according to actual requirements until all the workpieces P in the cassette blocks 121 are fed and welded, and then the workpieces P are fed and welded uniformly.

To sum up, the utility model designs the conveying mechanism 3 for transferring the workpiece P, and realizes the continuous feeding of the workpiece P by designing the feeding mechanism 1, so that the conveying mechanism 3 can continuously transfer the workpiece P to the welding station, thereby avoiding the interruption of welding, ensuring the welding continuity and improving the efficiency of the workpiece P; the positioning mechanism 2 is designed to perform independent position adjustment on the workpiece P before being transferred to the welding station, so that the position of the workpiece P is accurately positioned, the workpiece P is prevented from being deviated, the workpiece P can be accurately placed on the welding workpiece P, and the final welding precision of the workpiece P is improved.

Referring to fig. 4-5, further, in consideration of the possibility of uneven placement or jamming of the workpiece P during the placement of the workpiece P in the cassette block 121; if the cassette block 121 is not timely removed for processing, the normal transfer of the workpiece P by the conveying mechanism 3 will be affected, and in order to solve this problem, in the present invention, a plurality of cassette blocks 121 are detachably connected to the turntable 12; specifically, the plurality of cassette blocks 121 may be connected and fixed to the turntable 12 by screws or by clamping, and in the using process, a user may detach the corresponding cassette block 121 from the turntable 12 for processing according to actual requirements.

Referring to fig. 2 to 5, the first driving portion 11 includes a servo motor 111, a transmission assembly 112 and a cam divider 113, the transmission assembly 112 includes a driving wheel 1121, a transmission belt 1122 and a driven wheel 1123; the driving wheel 1121 is mounted on the output shaft of the servo motor 111, the driven wheel 1123 is mounted on the input shaft of the cam divider 113, and the transmission belt 1122 is wound on the driving wheel 1121 and the driven wheel 1123; the output shaft of the cam divider 113 is in driving connection with the rotary disc 12; the servo motor 111 drives the cam divider 113 to operate and drives the turntable 12 to rotate intermittently at a predetermined angle, so that the plurality of cassette blocks 121 on the turntable 12 correspond to the carrier plate 22 one by one.

Specifically, when the device is used, the servo motor 111 is started to synchronously drive the driving wheel 1121, the transmission belt 1122 and the driven wheel 1123, so that the cam divider 113 can drive the rotating disc 12 to rotate according to a set angle each time; for example, in the present invention, eight magazine blocks 121 are provided on the rotary table 12, and the rotation angle of the rotary table 12 is 45 °.

It should be noted that the cam divider 113 is also called a cam indexer or an intermittent divider in engineering, and is a high-precision rotating device, and it belongs to the prior art, so the detailed description of the specific structure of the present invention is omitted.

Referring to fig. 2 to 6, considering that the workpieces P in the cassette block 121 corresponding to the carrier plate 22 are reduced along with the transfer of the conveying mechanism 3, the overall height of the stacked workpieces P is gradually reduced, so as to change the downward moving range of the conveying mechanism 3, so that the material taking position of the conveying mechanism 3 is changed each time, and further the moving stroke of the conveying mechanism 3 is increased, thereby requiring a long time to transfer the materials in the corresponding cassette block 121; in order to solve the problem, the present invention further comprises a lifting mechanism 4, wherein a plurality of box blocks 121 are respectively provided with a storage groove 1210 for stacking the workpieces P, and the top side of the box blocks 121 is provided with a material taking port 1211 communicated with the storage groove 1210 and the outside; the rotary disk 12 is further provided with a plurality of top holes 122, and the top holes 122 are communicated with the storage slots 1210 in the plurality of box blocks 121 in a one-to-one correspondence manner; the lifting mechanism 4 is disposed below the turntable 12, and when the supporting board 22 corresponds to any one of the box blocks 121 on the turntable 12, the output end of the lifting mechanism 4 can penetrate through the top hole 122 corresponding to the box block 121, and drive the workpiece P stacked in the storage slot 1210 of the box block 121 to move upward.

Specifically, when the workpiece P is stacked in the magazine block 121, the workpiece P located at the topmost side of the stack of workpieces P is placed in the material taking port 1211, and the workpiece P placed in the material taking port 1211 can be directly taken away by the conveying mechanism 3 and transferred to the positioning component 21 on the bearing plate 22;

when in use, the first driving part 11 drives the rotating disc 12 to rotate, so that the first box block 121 corresponds to the supporting plate 22, and the top hole 122 corresponding to the first box block 121 is aligned with the lifting mechanism 4; at this time, after the conveying mechanism 3 transfers the workpiece P located in the material taking port 1211 of the first box block 121, the lifting mechanism 4 is started, the output end of the lifting mechanism 4 penetrates through the aligned top hole 122 and extends into the material placing groove 1210 of the first box block 121 to abut against and drive the stack of the workpiece P to move upward by the height of one workpiece P, so that the workpiece P located at the topmost side of the stack of the workpiece P enters the material taking port 1211 at present, and the conveying mechanism 3 can directly transfer the workpiece P again;

after the workpieces P in the first cassette block 121 are taken out, the output end of the lifting mechanism 4 is controlled to be separated from the top hole 122 corresponding to the first cassette block 121, and then the rotary disc 12 is driven to rotate by the first driving part 11, so that the top hole 122 corresponding to the second cassette block 121 is aligned with the lifting mechanism 4, and the conveying mechanism 3 transfers the workpieces P in the second cassette block 121 on the premise that the material taking position is not changed; while the conveying mechanism 3 is operating, the worker can stack the workpieces P with the empty first cassette block 121;

the continuous material supplementing can be realized by repeating the operation, and the material taking position of the conveying mechanism 3 is ensured to be unchanged every time, so that the movement stroke of the conveying mechanism 3 is shortened, the conveying mechanism 3 is convenient to transfer more workpieces P within limited time, and the working efficiency is improved.

Referring to fig. 2 to 6, the lifting mechanism 4 has various structures, and for easy understanding, in the present invention, the lifting mechanism 4 includes a fixing plate 41, a lead screw motor 42, a sliding seat 43 and a supporting rod 44; the fixed plate 41 is vertically arranged below the turntable 12, and the sliding seat 43 is slidably arranged on the fixed plate 41; the support rod 44 is arranged on the sliding seat 43 and serves as an output end of the lifting mechanism 4; the screw rod motor 42 is arranged on the fixing plate 41 and is in driving connection with the sliding seat 43 so as to drive the sliding seat 43 to move up and down; when the supporting board 22 corresponds to any one of the cassette blocks 121 on the turntable 12, the lead screw motor 42 drives the supporting rod 44 to penetrate through the top hole 122 corresponding to the cassette block 121, and drives the workpiece P stacked in the storage slot 1210 of the cassette block 121 to move upward.

Specifically, when the first cassette block 121 corresponds to the carrier plate 22, the conveying mechanism 3 is used to transfer the workpiece P located in the material taking port 1211 of the first cassette block 121, and then the lead screw motor 42 is started to drive the sliding base 43 and the supporting rod 44 to move upward by the height of one workpiece P, so that one end of the supporting rod 44 penetrates through the corresponding top hole 122 to the material placing groove 1210 of the first cassette block 121 and abuts against the workpiece P stack to move upward by the height of one workpiece P, thereby ensuring that the workpiece P located at the topmost side of the workpiece P stack is taken out of the material taking port 1211;

when the conveying mechanism 3 transfers the workpiece P in the material fetching port 1211 again, the screw rod motor 42 drives the slide carriage 43 to move up by the height of the workpiece P again; in this way, until all the workpieces P in the storage slot 1210 of the first box block 121 are taken out, the slide 43 is driven by the lead screw motor 42 to move downward and return to the original position, the turntable 12 is driven by the first driving part 11 to rotate, so that the second box block 121 corresponds to the bearing plate 22, and then the above operations are repeated.

It should be noted that, a user can preset the lead screw motor 42 in advance through a program, ensure that the lead screw motor 42 drives the slide carriage 43 to move up a specific distance within a specific interval time, and preset the time when the lead screw motor 42 drives the supporting rod 44 to disengage from the accommodating slot 1210 according to the time consumed by the conveying mechanism 3 to transfer all the workpieces P in one cassette block 121; or, the user may also use the control board to electrically connect the conveying mechanism 3 and the lead screw motor 42, and set that the conveying mechanism 3 sends a signal to the lead screw motor 42 through the control board after transferring the workpiece P each time, so as to control the lead screw motor 42 to drive the slide carriage 43 to move up by the distance of one workpiece P; the control of the screw motor 42 by a program or the control of the screw motor 42 by a feedback signal of the conveying mechanism 3 belongs to the technology understood by those skilled in the art, and belongs to the common technical means, so the circuit structure of the present invention is not described in detail.

Referring to fig. 2 to 6, based on the above description, the user can preset the lead screw motor 42 in advance by a program to ensure that the lead screw motor 42 drives the slide carriage 43 to move up a specific distance within a specific interval time, and the lead screw motor 42 can control the timing of the support rod 44 entering and leaving the storage slot 1210 by setting a sensor in addition to the preset program; for example, in the present invention, the lifting mechanism 4 further includes a first sensor 45, the first sensor 45 is installed on the support rod 44 and electrically connected to the lead screw motor 42, and the sensing end of the first sensor 45 is vertically upward designed to monitor whether there is a workpiece P in the corresponding object placing groove 1210 one by one.

Specifically, under the conventional condition, the supporting rod 44 is far away from the top hole 122, and when the first driving portion 11 drives the rotating disc 12 to rotate, so that the first cassette block 121 corresponds to the bearing plate 22, the first sensor 45 detects whether the workpiece P exists in the object placing groove 1210 of the first cassette block 121; if the sensing light of the first sensor 45 is not blocked, it is proved that no workpiece P exists in the storage tank 1210, the first sensor 45 will send out a warning to remind the user to supplement the material; generally, the first sensor 45 is connected to an external sound unit to send out an alarm;

if the sensing light of the first sensor 45 is shielded, it is proved that the workpiece P exists in the storage groove 1210, the first sensor 45 sends a signal to the lead screw motor 42 to control the lead screw motor 42 to operate and drive the support rod 44 to enter the storage groove 1210 and abut against the workpiece P; when the workpieces P in the first cassette block 121 are completely transferred, the sensing light of the first sensor 45 is not blocked, and then the first sensor 45 sends a signal to the lead screw motor 42 to control the lead screw motor 42 to operate and drive the support rod 44 to move down to be separated from the object placing slot 1210 and the top hole 122, so as to ensure that the turntable 12 can smoothly rotate. In summary, the design of the first sensor 45 can improve the automation degree of the feeding mechanism 1, and precisely control the time when the supporting rod 44 of the supporting rod 44 enters and leaves the storage tank 1210.

Referring to fig. 2-6, based on the above description, the user can also preset a program to control the operation timing of the conveying mechanism 3, so as to ensure that the conveying mechanism 3 timely transfers the workpiece P in the material fetching port 1211 each time; however, in the actual use process, when the workpiece P of the box block 121 is taken out completely or the workpiece P is stuck in the storage tank 1210, the workpiece P does not exist in the material taking port 1211, so that the conveying mechanism 3 cannot transfer the workpiece P to do useless work, and therefore, a sensor is necessary to be arranged to control the operation time of the conveying mechanism 3, for this reason, the utility model further comprises a material monitoring mechanism 5, and the material taking port 1211 and the plate surface of the bearing plate 22 are located on the same height plane; the material monitoring mechanism 5 comprises a bracket 51 and a second sensor 52; the bracket 51 is disposed beside the turntable 12 and designed corresponding to the bearing plate 22, the second sensor 52 is mounted on the bracket 51 and electrically connected to the conveying mechanism 3, and the sensing end of the second sensor 52 is designed horizontally to monitor whether the workpiece P is present in the corresponding material taking port 1211; when the turntable 12 rotates, the second sensor 52 can correspond to the material taking ports 1211 of the plurality of cassette blocks 121 one by one.

Specifically, when the workpieces P are stacked in the storage slot 1210 of the cassette block 121, the workpiece P located at the top side of the stack of workpieces P is located in the storage slot 1210, and at this time, the sensing light of the second sensor 52 is not shielded, and the second sensor 52 controls the conveying mechanism 3 to stop operating; when the lifting mechanism 4 controls the stack of workpieces P to move upward, the workpiece P located at the topmost side of the stack of workpieces P enters the material taking port 1211, and the sensing light of the second sensor 52 is blocked, the second sensor 52 sends a signal to the conveying mechanism 3 and controls the conveying mechanism 3 to operate, so as to transfer the workpiece P in the material taking port to the bearing plate 22.

In addition, since the material taking port 1211 and the plate surface of the bearing plate 22 are located on the same height plane, the moving distance required by the conveying mechanism 3 to take the workpiece P from the material taking port 1211 is equal to the moving distance required by the conveying mechanism 3 to place the workpiece P on the bearing plate 22, so that the material taking and discharging time of the conveying mechanism 3 is consistent, and the operation stability of the conveying mechanism 3 is improved.

To sum up, the utility model discloses in be used for detecting through design material monitoring mechanism 5 and get whether there is work piece P in the material mouth 1211 to this running state who controls conveying mechanism 3 ensures if and only when there is work piece P in the material mouth, and conveying mechanism 3 just can move, and this also order about second casket piece 121 on the carousel 12 for first drive division 11 and correspond loading board 22 and provide the opportunity.

Referring to fig. 1-3, regarding the conveying mechanism 3, a manipulator or other structures with material transferring function can be directly adopted, but the present invention is not limited in this respect, but for convenience of understanding, in the present invention, the conveying mechanism 3 includes a mounting plate 31, a suction cup assembly 32, a transverse moving unit 33 and a longitudinal moving unit 34, the suction cup assembly 32 is mounted on the mounting plate 31, and the suction cup assembly 32 can suck and release the workpiece P; the longitudinal moving unit 34 is vertically arranged and is in driving connection with the mounting plate 31 so as to drive the sucker assembly 32 to move in the vertical direction; the transverse moving unit 33 is horizontally arranged and is in driving connection with the longitudinal moving unit 34 to drive the sucker assembly 32 to move in the horizontal direction; the suction cup assembly 32 is driven to move back and forth between the material take-out opening 1211, the carrier plate 22 and the welding station by the longitudinal moving unit 34 and the transverse moving unit 33.

Wherein, the transverse moving unit 33 includes a first rail base 331 and a driving motor 332, and the longitudinal moving unit 34 includes a second rail base 341 and a driving cylinder 342; the first rail base 331 is horizontally placed, the second rail base 341 is vertically placed and slidably connected with the first rail base 331, and the mounting plate 31 is slidably connected with the second rail base 341; the driving motor 332 is installed on the first rail seat 331 and is in driving connection with the second rail seat 341 to drive the second rail seat 341 to move back and forth along the horizontal direction, so that the suction cup assembly 32 on the installation plate 31 approaches the turntable 12 or the bearing plate 22; the driving cylinder 342 is installed on the second rail seat 341 and is in driving connection with the mounting plate 31 to drive the mounting plate 31 to move up and down along the vertical direction, so that the suction cup assembly 32 is close to and away from the box block 121, or the suction cup assembly 32 is close to and away from the positioning assembly 21.

In addition, since the material fetching port 1211 is located on the same height plane as the plate surface of the supporting plate 22, the distance that the driving cylinder 342 needs to move to drive the suction cup assembly 32 to close the box block 121 and suck the workpiece P in the material fetching port 1211 is equal to the distance that the driving cylinder 342 needs to move to drive the suction cup assembly 32 to close the supporting plate 22 and place the sucked workpiece P on the positioning assembly 21. The second sensor 52 is electrically connected to the driving motor 332 and the driving cylinder 342 to control the longitudinal moving unit 34 and the lateral moving unit 33, and thus the position of the chuck assembly 32.

Referring to fig. 1 to fig. 3, the suction cup assembly 32 includes a first suction cup 321 and a second suction cup 322, the first suction cup 321 and the second suction cup 322 are respectively disposed on two sides of the mounting plate 31, the first suction cup 321 is designed corresponding to the cassette block 121, and the second suction cup 322 is designed corresponding to the welding station; when the first suction cup 321 sucks the workpiece P in the cassette block 121, the second suction cup 322 synchronously sucks the workpiece P whose position is adjusted by the positioning assembly 21; when the first suction cup 321 transfers the sucked workpiece P to the positioning assembly 21, the second suction cup 322 synchronously transfers the sucked workpiece P to the welding station.

This design makes the utility model provides a high accuracy work piece location conveyor possesses two stations, fixes a position work piece P when shifting work piece P promptly, has reduced work piece P's transfer time in other words, has improved work efficiency greatly.

Referring to fig. 1-2 and 7-12, there are various structures in the prior art for positioning a workpiece P, for example, a limiting groove may be directly designed on the bearing plate 22, and the workpiece P is clamped into the limiting groove to complete positioning, but in order to ensure that the workpiece P can be smoothly placed into the limiting groove, the limiting groove is generally slightly larger than the workpiece P, which also causes a certain offset between the workpiece P and the limiting groove, and the positioning accuracy is low; therefore, the utility model designs a unique positioning assembly 21, wherein the positioning assembly 21 comprises a stopper 211, a limiting block 212 and a second driving part 213, and the stopper 211 is arranged on the bearing plate 22 and corresponds to the first side and the second side of the workpiece P; the limiting blocks 212 are at least two and are slidably mounted on the bearing plate 22 to correspond to the third side and the fourth side of the workpiece P, respectively; the second driving portion 213 is in driving connection with the two limiting blocks 212, and the second driving portion 213 can drive the two limiting blocks 212 to abut against the third side and the fourth side of the workpiece P respectively, and drive the first side and the second side of the workpiece P to abut against the stopper 211; or drive the two stoppers 212 away from the workpiece P.

Specifically, when the conveying mechanism 3 transfers the workpiece P from the cassette block 121 to the carrier plate 22, the workpiece P is enclosed by the stopper 211 and the two stoppers 212, at this time, the second driving portion 213 drives the two stoppers 212 to move and abut against the third side and the fourth side of the workpiece P, and then the workpiece P is continuously driven to move until the first side and the second side of the workpiece P abut against the stopper 211, and at this time, the four sides of the workpiece P are respectively abutted by the stoppers 211 and the two stoppers 212, so that the workpiece P is regularly positioned on the carrier plate 22, and the function of adjusting the position of the workpiece P is achieved.

After the positioning is finished, the two limiting blocks 212 are driven to be away from the workpiece P by the second driving portion 213, so as to remove the limitation on the workpiece P, and then the workpiece P is transferred to the welding station by the conveying mechanism 3.

To sum up, the utility model discloses a design loading board 22 is used for placing work piece P, and the design of dog 211 and two stopper 212 on loading board 22 is then used for enclosing work piece P in, is used for driving two stopper 212 butt two adjacent sides of work piece P and drive work piece P to move through designing second drive division 213 at last, makes two other sides of work piece P butt dog 211, thereby fixes a position work piece P on loading board 22 neatly; compared with the way of providing the positioning plate on the carrier plate 22, the design of the positioning assembly 21 has the following advantages:

firstly, a worker only needs to place the workpiece P on the bearing plate 22 without searching a placing point intentionally, the operation is simple, time and physical strength can be saved, and the working efficiency is improved;

secondly, the stopper 211 and the two limit blocks 212 can be stably abutted and attached to four side edges of the workpiece P, so that the positioning precision is improved; in addition, the size of the enclosing range between the stop block 211 and the two limit blocks 212 is adjustable, so that the workpiece P with different specifications and sizes can be adapted, and the adaptability is strong.

Referring to fig. 7-10, the second driving portion 213 includes a base 214, an elastic member 215 and a driving member 216, the supporting plate 22 is mounted on the base 214, two fixing blocks 221 are further disposed on the supporting plate 22, and the two fixing blocks 221 are perpendicular to each other and respectively designed corresponding to the two limit blocks 212; the number of the elastic members 215 is two corresponding to the two fixing blocks 221, one end of each of the two elastic members 215 is respectively mounted on the two fixing blocks 221, and the other end of each of the two elastic members 215 is respectively abutted against the two limiting blocks 212; the driving member 216 is mounted on the base 214 and is in driving connection with the two stoppers 212 to drive the two stoppers 212 to be away from the workpiece P respectively; when the two elastic members 215 are in a normal state, the two limit blocks 212 respectively abut against the third side and the fourth side of the workpiece P, and the stop 211 abuts against the first side and the second side of the workpiece P.

Specifically, before use, the two elastic members 215 are both in a conventional state, and when a workpiece P needs to be positioned, the driving member 216 drives the two limiting blocks 212 to be away from the workpiece P, so that the enclosing range between the two limiting blocks 212 is enlarged, and in the process, the two elastic members 215 compress to store energy;

after the two limit blocks 212 move to a proper distance, the workpiece P is transferred to the bearing plate 22 through the conveying mechanism 3 and placed in the enclosing range between the two limit blocks 212 and the stop block 211, then the driving relationship between the driving member 216 and the two limit blocks 212 is released, so that the two limit blocks 212 are not limited by the driving member 216, the elastic member 215 releases energy to recover and drive the two limit blocks 212, the two limit blocks 212 are abutted to the third side and the fourth side of the workpiece P, and then the workpiece P is continuously driven to move until the first side and the second side of the workpiece P are abutted to the stop block 211.

In summary, in the present application, the driving element 216 is designed to control the limiting block 212 to be away from the workpiece P, and the elastic element 215 is designed to control the limiting block 212 to abut against and drive the workpiece P, since the elastic element 215 has elasticity and is capable of automatically returning, the elastic element 215 can be adapted to various workpieces P with different specifications, and when a workpiece P with a large area is encountered, the elastic element 215 can be deformed correspondingly, so as to avoid the workpiece P from being damaged due to rigid collision between the limiting block 212 and the workpiece P.

Wherein, elastic component 21531 can adopt the spring or adopt the part that possesses good elasticity and resilience such as rubber strip, the utility model discloses in do not limit to this.

Referring to fig. 7-10, the driving member 216 has various structures, and for convenience of understanding, in the present invention, the driving member 216 includes a driving source 2161, a supporting block 2162 and two dialing blocks 2163, the dialing blocks 2163 are provided in two, and the two dialing blocks 2163 are respectively installed at the bottom ends of the two limiting blocks 212; the driving source 2161 is installed on the base 214 and is in driving connection with the supporting block 2162 to drive the supporting block 2162 to abut against or be away from the two shifting blocks 2163; when the supporting block 2162 abuts against the two shifting blocks 2163, the limiting columns 2120 on the two limiting blocks 212 are far away from the workpiece P; when the supporting block 2162 is far away from the two shifting blocks 2163, the top ends of the two limiting blocks 212 respectively abut against the adjacent third side and fourth side of the workpiece P under the action of the two elastic members 215, and drive the first side and the second side of the workpiece P to abut against the stop block 211.

Specifically, when the driving source 2161 controls the supporting block 2162 to move upwards, the supporting block 2162 abuts against and props up the two shifting blocks 2163, so that the two limiting blocks 212 move and are far away from the workpiece P, and in the process, the elastic piece 215 stores energy and compresses; when the driving source 2161 controls the supporting block 2162 to move downwards to separate from the two shifting blocks 2163, the elastic member 215 releases energy to recover and drive the two limiting blocks 212 to move towards the workpiece P, so that the two limiting blocks 212 abut against the third side and the fourth side of the workpiece P and drive the workpiece P to move continuously until the first side and the second side of the workpiece P abut against the stop block 211 respectively, and the workpiece P is positioned.

It should be noted that above-mentioned driving source 2161 can adopt cylinder or electronic lead screw etc, the utility model discloses in do not prescribe a limit, and for convenient understanding, the utility model discloses in use the cylinder as the example, the cylinder is installed on base 214, the telescopic shaft and the stay block 2162 rigid coupling of cylinder order about the telescopic shaft through starting the cylinder and reciprocate, can drive stay block 2162 and reciprocate.

Referring to fig. 9, the top end of the supporting block 2162 is provided with a chamfered surface 2162m which is inclined downwards, and the two stirring pins 2163 are provided with inclined surfaces 2163m which can be correspondingly attached to the chamfered surface; the design can reduce the contact of the convenient supporting block 2162 and the opening of the two poking blocks 2163, and also facilitate the downward movement of the supporting block 2162 to separate from the two supporting blocks 2162.

Referring to fig. 7-12, two perpendicular flanges in an "L" shape are disposed on the stopper 211, and two perpendicular slide rails 222 are disposed on the bearing plate 22, wherein one slide rail 222 is parallel to one of the flanges; the two slide rails 222 are provided with a sliding block 2220, and the bottom ends of the two limiting blocks 212 are respectively fixedly connected with the sliding blocks 2220 on the two slide rails 222. The slide rail 222 has a guiding function, so that the limiting blocks 212 are stably and slidably mounted on the bearing plate 22, and the two limiting blocks 212 can be conveniently and stably abutted against the third side and the fourth side of the workpiece P; the two flanges on the stopper 211 are designed to stably abut against the first side and the second side of the workpiece P; the above design improves the positioning accuracy of the workpiece P.

Referring to fig. 7-12, the supporting plate 22 is provided with a movable notch 223, the stopper 211 is disposed on the top side of the supporting plate 22, and the two sliding rails 222 are disposed on the bottom side of the supporting plate 22; the top ends of the two limiting blocks 212 are respectively provided with a limiting column 2120, and the limiting columns 2120 on the two limiting blocks 212 are movably arranged in the movable notch 223 and respectively correspond to the third side and the fourth side of the workpiece P; the design of the movable notch 223 can surround the limiting posts 2120 on the two limiting blocks 212, and the two limiting posts 2120 abut against the two sides of the workpiece P, so that the limiting blocks 212 are prevented from being directly mounted above the bearing plate 22 and occupying a large space, and the whole structure is more compact.

Referring to fig. 9-12, in consideration of the fact that the supporting block 2162 abuts against and supports the two pushing blocks 2163, and the enclosing range between the two limiting blocks 212 and the stopper 211 belongs to a fixed range, in order to solve the problem, the present invention further includes an adjusting bolt 6, the bottom end of the limiting block 212 is further provided with a slot 212k, and the slot 212k is parallel to the corresponding slide rail 222; a bump 2163k in sliding connection with the slot 212k is arranged on the dial block 2163, and an adjusting slot 21630 parallel to the slot 212k is arranged in the bump 2163 k; the first end of the adjusting bolt 6 abuts against the poking block 2163, the adjusting groove 21630 is slidably connected with the body of the adjusting bolt 6, and the second end of the adjusting bolt 6 penetrates through the adjusting groove 21630 and is in threaded connection with the slot 212 k.

Specifically, as shown in fig. 9-10, in a conventional case, the adjusting bolt 6 fixes the setting member 2163 to the limiting block 212, and when the supporting block 2162 abuts against and supports the two setting members 2163, an enclosed range between the limiting posts 2120 on the two limiting blocks 212 and the stopper 211 belongs to a fixed range;

as shown in fig. 11, when the enclosing range between the limiting posts 2120 and the bumps 2163k on the two limiting blocks 212 needs to be increased or decreased, the adjusting bolt 6 is unscrewed, and then the puller 2163 slides in the direction of the slot 212k, so that the distance between the puller 2163 and the limiting blocks 212 is changed, and the enclosing range between the limiting posts 2120 and the bumps 2163k on the two limiting blocks 212 is adjusted; after the shifting block 2163 slides to a proper position, the adjusting bolt 6 is screwed down, so that the shifting block 2163 is fixed with the limiting block 212; this design makes this positioning mechanism 2 can adapt to the work piece P of multiple specification.

Referring to fig. 1 to 4 and fig. 7 to 12, a cross-shaped partition block 1212 is disposed in the storage tank 1210, and the partition block 1212 divides the storage tank 1210 into spaces in which four workpieces P can be placed, so that the cassette block 121 in the present invention can stack four groups of workpieces P; four movable notches 223 are arranged, four stoppers 211 are arranged, and a cross shape is formed; four slide rails 222 are provided; four limiting blocks 212 are arranged, two limiting columns 2120 are arranged at the top end of each limiting block 212, the two limiting columns 2120 are respectively arranged in the two adjacent movable notches 223, and the bottom ends of the four limiting blocks 212 are respectively fixedly connected with sliding blocks 2220 on the four sliding rails 222; the driving part is in driving connection with four limit blocks 212.

The cross-shaped stopper 211 can be abutted against the first side and the second side of the four workpieces P at the same time, and each stopper 212 is provided with two stopper posts 2120, so that eight stopper posts 2120 are added, and the stopper 2120 can correspond to the third side and the fourth side of the four workpieces P at the same time; the design ensures that the positioning mechanism 2 can position four workpieces P at the same time, thereby effectively improving the working efficiency; reference may be made in detail to fig. 7-8 for an understanding of the principles of operation thereof, and to the description taken in conjunction with the drawings.

It should also be noted that while embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the application.

Claims (10)

1. A high-precision workpiece positioning and conveying device is characterized by comprising a conveying device, a positioning device and a conveying device, wherein the conveying device is used for conveying workpieces;

the feeding mechanism (1) comprises a first driving part (11) and a horizontally arranged rotary table (12), wherein a plurality of box blocks (121) used for stacking workpieces (P) are arranged on the rotary table (12) in a circumferential array manner; the first driving part (11) is in driving connection with the rotary disc (12) so as to drive the rotary disc (12) to rotate;

the positioning mechanism (2) comprises a positioning component (21) and a bearing plate (22) arranged beside the turntable (12), and the bearing plate (22) can correspond to the box blocks (121) one by one; the positioning component (21) is arranged on the bearing plate (22) and can adjust the position of the workpiece (P);

the conveying mechanism (3) is arranged beside the rotary table (12) and the bearing plate (22), and when the bearing plate (22) corresponds to any one of the box blocks (121) on the rotary table (12), the conveying mechanism (3) can transfer the workpiece (P) in the corresponding box block (121) to a positioning assembly (21) on the bearing plate (22) for position adjustment; the conveying mechanism (3) can also transfer the positioned workpieces (P) to a welding station.

2. A high precision workpiece positioning and conveying device according to claim 1, characterized by further comprising a lifting mechanism (4), wherein a plurality of said box blocks (121) are provided with a storage slot (1210) for stacking said workpieces (P), and the top side of said box block (121) is provided with a material taking port (1211) for communicating said storage slot (1210) with the outside; the rotary disc (12) is also provided with a plurality of top holes (122), and the top holes (122) are communicated with the object placing grooves (1210) in the box blocks (121) in a one-to-one correspondence manner;

the lifting mechanism (4) is arranged below the rotary disc (12), and when the bearing plate (22) corresponds to any one of the box blocks (121) on the rotary disc (12), the output end of the lifting mechanism (4) can penetrate through the top hole (122) corresponding to the box block (121) and drive the workpiece (P) stacked in the object placing groove (1210) of the box block (121) to move upwards.

3. A high precision workpiece positioning and conveying device according to claim 2, characterized in that the lifting mechanism (4) comprises a fixed plate (41), a lead screw motor (42), a sliding seat (43) and a supporting rod (44); the fixed plate (41) is vertically arranged below the rotary table (12), and the sliding seat (43) is slidably arranged on the fixed plate (41); the supporting rod (44) is arranged on the sliding seat (43) and serves as an output end of the lifting mechanism (4);

the screw rod motor (42) is arranged on the fixing plate (41) and is in driving connection with the sliding seat (43) so as to drive the sliding seat (43) to move up and down; when the bearing plate (22) corresponds to any one of the cassette blocks (121) on the turntable (12), the lead screw motor (42) can drive the support rod (44) to penetrate through the top hole (122) corresponding to the cassette block (121) and drive the workpiece (P) stacked in the storage groove (1210) of the cassette block (121) to move upwards.

4. A high precision workpiece positioning and conveying device according to claim 3, characterized in that the lifting mechanism (4) further comprises a first sensor (45), the first sensor (45) is installed on the support rod (44) and electrically connected with the lead screw motor (42), and the sensing end of the first sensor (45) is designed vertically upwards to monitor whether the workpiece (P) exists in the corresponding object placing groove (1210) one by one.

5. A high precision workpiece positioning and conveying device as claimed in claim 2, further comprising a material monitoring mechanism (5), wherein the material taking port (1211) and the plate surface of the bearing plate (22) are located on the same height plane; the material monitoring mechanism (5) comprises a bracket (51) and a second sensor (52); the bracket (51) is arranged beside the turntable (12) and designed corresponding to the bearing plate (22), the second sensor (52) is arranged on the bracket (51) and electrically connected with the conveying mechanism (3), and the sensing end of the second sensor (52) is designed horizontally to monitor whether a workpiece (P) exists in the corresponding material taking port (1211); when the rotating disc (12) rotates, the second sensor (52) can correspond to the material taking ports (1211) of the box blocks (121) one by one.

6. A high precision workpiece positioning and conveying device as claimed in claim 5, characterized in that said conveying mechanism (3) comprises a mounting plate (31), a suction cup assembly (32), a transverse moving unit (33) and a longitudinal moving unit (34), said suction cup assembly (32) is mounted on said mounting plate (31), and said suction cup assembly (32) can suck and release said workpiece (P); the longitudinal moving unit (34) is vertically arranged and is in driving connection with the mounting plate (31) so as to drive the sucker assembly (32) to move in the vertical direction; the transverse moving unit (33) is horizontally arranged and is in driving connection with the longitudinal moving unit (34) so as to drive the sucker assembly (32) to move in the horizontal direction; the sucker assembly (32) can be driven to move back and forth among the material taking opening (1211), the bearing plate (22) and the welding station through the longitudinal moving unit (34) and the transverse moving unit (33).

7. A high precision workpiece positioning and conveying device as claimed in claim 6, characterized in that said suction cup assembly (32) comprises a first suction cup (321) and a second suction cup (322), said first suction cup (321) and said second suction cup (322) are respectively arranged on both sides of said mounting plate (31), said first suction cup (321) is designed corresponding to said cassette block (121), said second suction cup (322) is designed corresponding to a welding station; when the first suction disc (321) sucks the workpiece (P) in the box block (121), the second suction disc (322) synchronously sucks the workpiece (P) which is subjected to position adjustment by the positioning assembly (21); when the first suction cup (321) transfers the sucked workpiece (P) to the positioning component (21), the second suction cup (322) synchronously transfers the sucked workpiece (P) to a welding station.

8. The high-precision workpiece positioning and conveying device according to claim 1, wherein the positioning assembly (21) comprises a stopper (211), a limiting block (212) and a second driving portion (213), the stopper (211) is arranged on the bearing plate (22) and corresponds to the first side edge and the second side edge of the workpiece (P); the limiting blocks (212) are at least provided with two limiting blocks which are arranged on the bearing plate (22) in a sliding way so as to respectively correspond to the third side edge and the fourth side edge of the workpiece (P); the second driving part (213) is in driving connection with the two limiting blocks (212), and the second driving part (213) can drive the two limiting blocks (212) to abut against the third side and the fourth side of the workpiece (P) respectively and drive the first side and the second side of the workpiece (P) to abut against the stop block (211); or drive the two limit blocks (212) away from the workpiece (P).

9. The high-precision workpiece positioning and conveying device according to claim 8, wherein the second driving portion (213) comprises a base (214), an elastic member (215) and a driving member (216), the bearing plate (22) is mounted on the base (214), two fixing blocks (221) are further disposed on the bearing plate (22), and the two fixing blocks (221) are perpendicular to each other and are respectively designed corresponding to the two limiting blocks (212);

the number of the elastic pieces (215) is two corresponding to the two fixing blocks (221), one ends of the two elastic pieces (215) are respectively installed on the two fixing blocks (221), and the other ends of the two elastic pieces (215) are respectively abutted to the two limiting blocks (212); the driving piece (216) is mounted on the base (214) and is in driving connection with the two limit blocks (212) so as to drive the two limit blocks (212) to be away from the workpiece (P) respectively; when the two elastic pieces (215) are in a normal state, the two limiting blocks (212) are respectively abutted to the third side and the fourth side of the workpiece (P), and the stop block (211) is abutted to the first side and the second side of the workpiece (P).

10. A high precision workpiece positioning and conveying device as claimed in claim 9, characterized in that the driving member (216) comprises a driving source (2161), a supporting block (2162) and two setting blocks (2163), wherein two setting blocks (2163) are provided, and the two setting blocks (2163) are respectively mounted at the bottom ends of the two limiting blocks (212); the driving source (2161) is arranged on the base (214) and is in driving connection with the supporting block (2162) so as to drive the supporting block (2162) to abut against or be away from the two shifting blocks (2163);

when the supporting block (2162) is abutted against the two shifting blocks (2163), the limiting posts on the two limiting blocks (212) are far away from the workpiece (P); two when stirring soon (2163), two are kept away from in kicking block (2162) the top of stopper (212) is two under the effect of elastic component (215) butt respectively the adjacent third side and fourth side of work piece (P), and drive the first side and the second side butt of work piece (P) dog (211).

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