CN216442503U - Double-table-board workbench - Google Patents

Abstract

The utility model provides a double-table-board workbench which comprises a conveying mechanism, a first workbench, a second workbench and an alignment assembly, wherein the conveying mechanism is arranged on the first workbench; the conveying mechanism comprises a first sliding rail and a second sliding rail; a first sliding block is arranged on the first sliding rail; a second sliding block is arranged on the second sliding rail; the two ends of the conveying mechanism are respectively an alignment station and a working station; the first workbench is connected with the first sliding block, and the second workbench is connected with the second sliding block; the first workbench and the second workbench can respectively slide back and forth at the alignment station and the working station along the first slide rail and the second slide rail; the alignment assembly is arranged at the alignment station; the alignment assembly includes a UVW alignment stage and a connection assembly for connecting the UVW alignment stage to the first stage or the second stage. The utility model solves the problem of low alignment precision of the conventional double-table-board workbench.

Description

Double-table-board workbench

Technical Field

The utility model relates to the technical field of workbenches, in particular to a double-table-board workbench.

Background

The UVW alignment platform is a multi-axis linkage motion mechanism, can realize complex motions such as single-axis linear motion, two-axis linear interpolation, two-axis circular interpolation, arbitrary circle center rotation and the like through parallel motion of 4 linear moving axes, is a mechanical execution part in a high-precision vision alignment system, and is widely applied to occasions such as a screen printing machine, an exposure machine, a photomask printing machine, a chip mounter and the like due to the high-precision characteristic of the UVW alignment platform. At present, the UVW platform consists of a lower base plate, an upper table top and four movement shafts, and the four movement shafts are matched with each other to realize accurate alignment. The single UVW platform can carry out multiple times of alignment on a single workbench, the position precision is high, the time required by alignment is relatively long, and the production efficiency is low; the upper workbench and the lower workbench of the double-running-platform workbench work in parallel, the efficiency is high, but the position accuracy of an object on the workbench depends on the position accuracy in the feeding process, the position accuracy is poor, and the adjustment is not easy. Thus, there remains a need for further improvements in the art.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a double-table-board workbench and an alignment method for the double-table-board workbench, and aims to solve the problem of low alignment precision of the double-table-board workbench in the prior art.

In order to achieve the purpose, the double-table-board workbench provided by the utility model comprises a conveying mechanism, a first workbench, a second workbench and an alignment assembly; the conveying mechanism comprises a first slide rail and a second slide rail; a first sliding block is arranged on the first sliding rail; a second sliding block is arranged on the second sliding rail; the two ends of the conveying mechanism are respectively an alignment station and a working station; the first workbench is connected with the first sliding block, and the second workbench is connected with the second sliding block; the first workbench and the second workbench can respectively slide back and forth at the alignment station and the working station along the first slide rail and the second slide rail; the alignment assembly is arranged at the alignment station; the alignment assembly includes a UVW alignment stage and a connection assembly for connecting the UVW alignment stage to the first stage or the second stage.

Preferably, a first locking mechanism is connected to the first sliding block, and the first sliding block is lockably connected to the first workbench through the first locking mechanism.

Preferably, the first locking mechanism includes a first pressure plate cylinder and a first pressure plate.

Preferably, the first slide rail is located inside the second slide rail, and the upper surface of the first workbench is lower than the lower surface of the second workbench.

Preferably, a target is arranged on the first workbench, and the alignment assembly further comprises a reset camera for shooting the target to determine the position of the first workbench.

Preferably, the target is provided at an edge of the first table.

Preferably, the UVW counterpoint platform is located the counterpoint station below, and the target is located first workstation lower surface.

Preferably, the alignment assembly further comprises a light source for illuminating the target.

Preferably, the target is provided in plurality, and the plurality of targets are arranged at intervals.

Preferably, one reset camera is arranged below each of at least two targets.

Preferably, the lower surface of the first workbench is provided with two positioning parts which take the center of the first workbench as a symmetry center; the UVW counterpoint platform is located counterpoint station below, the subassembly of counterpointing still include two symmetry set up and with two location portion matched with initial point location cylinder.

Preferably, the origin positioning cylinder comprises a cylinder body and a piston rod, the piston rod is connected with a pushing part, and the pushing part is matched with the positioning part.

Preferably, the positioning portion includes a cam follower, and the pushing portion has a positioning recess that mates with the cam follower.

Preferably, the UVW alignment table has an alignment plate, the connection assembly is disposed above the alignment plate, and the connection assembly is fixed to the alignment plate in the horizontal direction.

Preferably, the connecting assembly comprises a connecting rod capable of ascending and descending, and the top end of the connecting rod is provided with a connecting part.

Preferably, the connecting rod is provided in plurality.

Preferably, the lower surface of the first workbench is provided with a connecting seat matched with the connecting part.

Preferably, the connecting part is non-circular, and the connecting seat has a groove or a hole matched with the connecting part.

Preferably, the connecting portion includes an electromagnet, and the connecting holder has a component made of a soft magnetic material or is made of a soft magnetic material.

Preferably, coupling assembling still includes the fore-set, first workstation be equipped with the thimble that the fore-set corresponds.

Preferably, the connecting assembly further comprises an electromagnetic magnetic attraction structure, and the first workbench is provided with a magnetic attraction piece corresponding to the electromagnetic magnetic attraction structure.

Preferably, the electromagnetic magnetic attraction structure comprises a plurality of electromagnet units, and the magnetic attraction piece comprises a soft magnet matched with the electromagnet units.

Preferably, the distance from the top end of the top column to the thimble is smaller than the distance from the top end of the electromagnetic magnetic attraction structure to the bottom end of the magnetic attraction piece.

Preferably, the double-table-top workbench further comprises a lifting mechanism for controlling the connecting assembly to be raised to connect the first workbench or for controlling the connecting assembly to be lowered to disconnect the first workbench.

Preferably, the lifting mechanism is arranged below the UVW alignment table to drive the UVW alignment table to rise or fall.

Preferably, the lifting mechanism comprises a lifting platform, a guide column and a driving mechanism for driving the lifting platform; the lifting platform is arranged above the UVW alignment platform, and the guide column vertically penetrates through the lifting platform and is vertically connected to the UVW alignment platform.

Preferably, the driving mechanism comprises a screw rod, a motor and a shaft sleeve, the motor is connected with the screw rod to drive the screw rod to rotate, and the shaft sleeve is sleeved on the screw rod and fixed on the lifting platform.

Preferably, the conveying mechanism further comprises a driving motor, a conveying belt and a tensioning wheel; the tensioning wheel is arranged on the inner side of the conveying belt so that the conveying belt is provided with a first belt surface and a second belt surface, and the first belt surface and the second belt surface synchronously and reversely move; the first sliding block is connected with a first belt surface of the conveying belt, and the second sliding block is connected with a second belt surface of the conveying belt.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a UVW alignment table, a lifting assembly and a connecting assembly according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a UVW alignment table, a lift assembly and a connecting assembly according to another embodiment of the present invention;

FIG. 4 is a schematic side view of an embodiment of the present invention;

FIG. 5 is a schematic bottom view of the first worktable according to an embodiment of the present invention;

FIG. 6 is a bottom view of the first worktable according to an embodiment of the present invention;

FIG. 7 is a schematic view of a bottom surface of a first worktable in another embodiment of the present invention

FIG. 8 is a schematic side view of a first worktable according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of an oblique top view of the first stage according to an embodiment of the present invention;

FIG. 10 is a schematic view of an embodiment of a lifting assembly of the present invention;

fig. 11 is a schematic view of the connection relationship between the conveyor belt and the first and second work tables according to an embodiment of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 11, the present invention provides a dual-platform workbench, which can be used for equipment requiring position calibration before specific operations, such as a screen printer, a pad printer, a dispenser, etc., and comprises a conveying mechanism 100, a first workbench 200, a second workbench 300 and an alignment assembly 400; the conveying mechanism 100 comprises a first slide rail 110 and a second slide rail 130; a first sliding block 111 is arranged on the first sliding rail 110; a second sliding block 131 is arranged on the second sliding rail 130; two ends of the conveying mechanism 100 are respectively an alignment station and a working station; the first workbench 200 is connected with the first slide block 111, and the second workbench 300 is connected with the second slide block 131; the first working table 200 and the second working table 300 can slide back and forth at the alignment station and the working station along the first slide rail 110 and the second slide rail 130, respectively; the alignment assembly 400 is arranged at the alignment station; the alignment assembly 400 includes a UVW alignment stage 410 and a connecting assembly for connecting the UVW alignment stage 410 to the first or second work table 200 or 300.

According to the utility model, a conventional double-table-board workbench and the UVW alignment table 410 are combined, and the UVW alignment table 410 is used for performing high-precision alignment on the workbench through the connecting component, so that the problem that the conventional double-table-board workbench can only be used in equipment with low requirement on position precision under the condition of low alignment precision is solved.

The conveying mechanism 100 is used for conveying the first workbench 200 and the second workbench 300 to respectively slide back and forth at the alignment station and the working station; the alignment station is a station for correcting the positions of jigs, screens, workpieces and the like on the first workbench 200 or the second workbench 300 by adjusting the specific positions of the first workbench 200 or the second workbench 300 on the alignment station; after the position correction is completed, the first work table 200 or the second work table 300 moves to a work station along the linear slide rail to perform a specific operation. At present, the precision of the linear slide rail is very high, and the position of the first workbench 200 or the second workbench 300 can be accurately controlled in the process of moving to the working station after the position correction of the alignment station is completed, so that the position precision of the first workbench 200 or the second workbench 300 can be ensured to meet the operation requirement after moving to the working station along the linear slide rail, and the position of the first workbench 200 or the second workbench 300 does not need to be calibrated additionally.

A first sliding block 111 is arranged on the first linear sliding rail, and the first workbench 200 can be fixed on the first sliding block 111 in a locking manner; a second slide block 131 is arranged on the second linear sliding rail, and the second workbench 300 can be fixed on the second slide block 131 in a locking manner; in the utility model, a first locking mechanism 120 is connected to the first slide block 111, and a second locking mechanism is connected to the second slide block 131; the first locking mechanism 120 comprises a first pressing plate 122 and a first pressing plate cylinder 121, and a piston rod of the first pressing plate cylinder 121 passes through a hole on the first workbench 200 and is connected with the first pressing plate 122; the cylinder body of the first pressure plate cylinder 121 is fixedly connected with the first slider 111, in an embodiment, the connection between the first pressure plate cylinder 121 and the first slider 111 is a direct connection, and in other embodiments, the first pressure plate cylinder 121 and the first slider 111 may also be indirectly connected through an intermediate connection part 421.

The diameter of the piston rod of the first platen cylinder 121 is smaller than the diameter of the corresponding hole on the first table 200; when the piston rod of the first pressing plate cylinder 121 contracts, the first pressing plate 122 presses the first workbench 200 tightly, so that the first workbench 200 is fixed on the first sliding block 111; when the piston rod of the first pressing plate cylinder 121 extends, the first pressing plate 122 is separated from the first worktable 200, and the first worktable 200 can rotate and translate within a certain range of the plane, so as to realize the correction of the position of the first worktable 200. The second locking mechanism comprises a second pressing plate and a second pressing plate cylinder, and a piston rod of the second pressing plate cylinder penetrates through a hole position on the second workbench 300 and is connected with the second pressing plate; the diameter of the piston rod of the second platen cylinder is smaller than the diameter of the corresponding hole in the second platen 300; when the piston rod of the second pressing plate cylinder is contracted, the second pressing plate presses the second workbench 300 tightly, so that the second workbench 300 is fixed on the second sliding block 131; when the piston rod of the second pressing plate cylinder extends, the second pressing plate is separated from the second workbench 300, and the second workbench 300 can rotate and translate within a certain range, so that the position of the second workbench 300 can be corrected.

In order to prevent the first table top and the second table top from interfering with each other when the alignment station and the working station reciprocate, in the present invention, the first slide rail 110 is located inside the second slide rail 130, and the upper surface of the first table 200 is lower than the lower surface of the second table 300. That is, the cross-sections of the second table 300 and the second slide rail 130 are in a "door" shape, and the first table 200 is positioned below the second table 300 and inside the second table 300, and when it reciprocates, the whole is positioned inside the "door" shape structure formed by the second table 300 and the second slide rail 130.

In one embodiment, the conveying mechanism 100 further includes a driving motor 530, a conveying belt 141 and a tension wheel 140; the tension wheel 140 is disposed inside the conveyor belt 141, so that the conveyor belt 141 has a first belt surface 142 and a second belt surface 143, and the first belt surface 142 and the second belt surface 143 move synchronously and reversely; the first slide 111 is connected to the first belt surface 142 of the conveyor belt 141, and the second slide 131 is connected to the second belt surface 143 of the conveyor belt 141. In this embodiment, the first working table 200 and the second working table 300 are driven by the same motor 530, and the first working table 200 and the second working table 300 always move synchronously and reversely by the arrangement of the tension wheel 140 and the conveying belt 141.

In other embodiments, the conveying mechanism 100 may also drive the first working table 200 and the second working table 300 by using separate driving motors 530, respectively.

Although the UVW contraposition table 410 has high contraposition precision, when the UVW contraposition table is used for a double-table-board workbench, the contraposition stroke, particularly the contraposition stroke of translation, is limited, and the high-precision contraposition is realized by adopting a twice contraposition mode. The first time is roughly counterpointed, moves first workstation 200 to preset position, and the second time is accurate counterpoint, utilizes the accurate position of material shooting of material loading camera, carries out the fine tuning of position through UVW counterpoint platform 410 again.

In one embodiment, the origin positioning cylinder 440 is used to drive the first table 200 to perform coarse alignment. The lower surface of the first worktable 200 is provided with two positioning parts 450 which are symmetrical about the center of the first worktable 200; the UVW alignment table 410 is located below the alignment station, and the alignment assembly 400 further includes two origin positioning cylinders 440 symmetrically disposed and matched with the two positioning portions 450. The two origin positioning cylinders 440 push the two positioning portions 450, so that the center of the first table 200 is at a fixed horizontal position, which is also the center position of the two origin positioning cylinders 440. The origin positioning cylinder 440 includes a cylinder body and a piston rod, the piston rod is connected with a pushing portion 460, and the pushing portion 460 is adapted to the positioning portion 450. The positioning portion 450 includes a cam follower 451, and the pushing portion 460 has a positioning recess 461 that is engaged with the cam follower 451. In other embodiments, the cam follower 451 may be disposed on the pushing portion 460, and accordingly, the two positioning portions 450 have the positioning recesses 461 engaged therewith.

In another embodiment, UVW alignment stage 410 is used in conjunction with a vision imaging system for coarse alignment. A target 240 is provided on the first table 200, and the alignment assembly 400 further includes a reset camera 480 for photographing the target 240 to determine the position of the first table 200.

The UVW alignment stage 410 is located below the alignment station, the target 240 is disposed on the lower surface of the first stage 200 and is disposed at the edge of the first stage 200, and the reset camera 480 is disposed on the UVW alignment stage 410.

The alignment assembly 400 also includes a light source 490 for illuminating the target so that the reset camera 480 can clearly capture an image of the target 240.

The target 240 may be provided in one or more than one, and it should be understood that the target 240 serves to mark the position of the first table 200, and in an embodiment where only one target 240 is provided to mark the first table 200, the shape of the target 240 should be regular, so that the position information of the first table 200, including the information of the deflection angle and the position information of the distance and direction deviating from the preset position, can be accurately obtained through the image of the shape.

In other embodiments, there are a plurality of targets 240, at least two targets, three targets, four targets, or more targets 240 are spaced apart from each other. In order to accurately obtain the position information of the first stage 200, at least two reset cameras 480 are disposed below the targets 240.

The reset camera 480 photographs the target 240 to acquire the position information of the target 240, and further acquires the position information of the first stage 200, that is, acquires the first position information. Comparing first position information with first preset position information by a control system, when the difference between the first position information and the first preset position information is larger than a preset value, adjusting the first workbench 200 to a first preset position by a UVW contraposition table 410 according to the obtained first position information, and then starting a feeding camera to shoot materials on the first workbench 200 to obtain position information of the materials, namely second position information; when the difference between the first position information and the first preset position information is not greater than a preset value, a feeding camera is started to shoot the material on the first workbench 200 to obtain position information of the material, namely second position information, and the UVW alignment table 410 adjusts the first workbench 200 according to the obtained second position information to adjust the material on the first workbench 200 to a second preset position.

The position information may be in different forms, for example, a form of combining a center point coordinate of the first workbench 200 with a deflection angle of the first workbench 200 may be adopted, when the acquired position information is compared with the preset position information, a difference between the acquired position information and the preset position information includes a distance between the center point, an included angle between a connecting line of the two center points and a preset straight line, and an angle of deflection of the first workbench 200 itself, that is, one distance data and two angle data are used as basic data of the position information, wherein the distance between the center and the included angle between the connecting line of the center points and the preset straight line are used as one set of position information, the deflection angle of the first workbench 200 itself is used as another set of position information, and the two sets of position information are combined to determine the position of the first workbench 200. When the difference between any two sets of position information exceeds a predetermined value, the UVW alignment stage 410 is activated to move the first stage 200 to a first predetermined position. In other embodiments, the distance of the central point may be orthogonally decomposed into two XY directions, and a form of two distance data and one angle data, which are three data, may be adopted, and this data form may be only any one of the two distance data and the one angle data, that is, when the difference between any one of the three data and the data at the preset position is greater than a preset value, the UVW positioning stage 410 is started to adjust the first stage 200.

The UVW alignment table 410 has an alignment plate 411, and an alignment motor 530 of the UVW alignment table drives the alignment plate 411 to translate and rotate, so as to achieve an alignment function. Coupling assembling locates counterpoint board 411 top, just coupling assembling is relative in the horizontal direction counterpoint board 411 is fixed. Coupling assembling includes the connecting rod 420 of liftable, connecting rod 420 top has connecting portion 421, first workstation 200 lower surface be equipped with the connecting seat 210 of connecting portion 421 adaptation.

In an embodiment of the present invention, the number of the connecting rods 420 is multiple, and in a specific embodiment, the number of the connecting rods 420 can be 3 or 4. In other embodiments, the connection portion 421 may be configured to be non-circular, and the connection seat 210 has a groove or a hole adapted to the connection portion 421. When the first table 200 is located at the origin position, the connection portion 421 can be just inserted into the groove or the hole to connect the UVW alignment table 410 and the first table 200. When the non-circular connecting portion 421 is used, one or more connecting rods 420 may be provided. When the connecting portion 421 is non-circular, the first working platform 200 can be driven to rotate and adjust the position by the single connecting rod 420.

In order to increase the stability when the connection part 421 is connected to the connection socket 210, the connection part 421 further includes an electromagnet, and the connection socket 210 has a component made of a soft magnetic material or the connection socket 210 is made of a soft magnetic material. When connecting portion 421 is connected to connecting seat 210, the electro-magnet circular telegram magnetizes the soft magnetic material of connecting seat 210 and attracts with it, when the connection between connecting portion 421 and connecting seat 210 need be disconnected after accomplishing the counterpoint, the electro-magnet outage, and the soft magnetic material demagnetizes rapidly, and the attraction disappears between connecting portion 421 and the connecting seat 210, and connecting portion 421 and connecting seat 210 separate.

Another embodiment of the present invention provides a connecting assembly, which includes a top pillar 430, and the first working platform 200 is provided with a thimble 220 corresponding to the top pillar 430. The connecting assembly further includes an electromagnetic attraction structure 470, and the first working platform 200 is provided with a magnetic attraction member 230 corresponding to the electromagnetic attraction structure 470. The electromagnetic magnetic attraction structure 470 includes a plurality of electromagnet units, and the magnetic attraction member 230 includes a soft magnet cooperating with the electromagnet units. The soft magnet can be respectively matched with the electromagnet units in a plurality of arrangements, and can also be arranged into a whole.

The distance from the top end of the top column 430 to the thimble 220 is smaller than the distance from the top end of the electromagnetic attraction structure 470 to the bottom end of the magnetic attraction element 230.

The double-table-board workbench further comprises a lifting mechanism 500, wherein the lifting mechanism 500 is used for controlling the connecting assembly to be lifted to be connected with the first workbench 200 or controlling the connecting assembly to be lowered to be separated from the first workbench 200. The lifting mechanism 500 includes a lifting stage 510, a guide column 520, and a driving mechanism for driving the lifting stage 510; the lifting table 510 is disposed above the UVW alignment table 410, and the guide column 520 vertically passes through the lifting table 510 and is vertically connected to the UVW alignment table 410. The driving mechanism comprises a screw 531, a motor 530 and a shaft sleeve 532, the motor 530 is connected with the screw 531 to drive the screw 531 to rotate, and the shaft sleeve 532 is sleeved on the screw 531 and fixed on the lifting table 510.

After the first workbench 200 slides to the alignment station along the linear slide rail and finishes feeding, the first platen cylinder 121 releases the first workbench 200 and enters into the alignment operation. The UVW alignment table 410 is located below the alignment station, during alignment, the lifting assembly drives the top post 430 to ascend and contact with the thimble 220, the electromagnetic magnetic attraction structure 470 is not yet in contact with the magnetic attraction member 230, at this time, the original point positioning cylinder 440 is located at a height capable of pushing the positioning portion 450, the original point positioning cylinder 440 is started to push the positioning portion 450, so that the first workbench 200 is located at the original point position, and coarse alignment is completed; then, the lifting mechanism 500 drives the connecting component to ascend, so that the electromagnetic attraction structure 470 contacts with the magnetic attraction piece 230, and the electromagnet unit in the electromagnetic attraction structure 470 is started to be tightly attracted together; the UVW alignment stage 410 is activated to precisely align the first stage 200. The magnetic member 230 is made of soft magnetic material, and can be magnetized rapidly when the electromagnet is powered on and demagnetized rapidly when the electromagnet is powered off. In this embodiment, the electromagnetic attraction structure 470 may be disposed on the connecting rod 420, or the connecting rod 420 itself may be disposed as the electromagnetic attraction structure 470; the magnetic member 230 may be disposed on the connection socket 210, or the connection socket 210 itself may be disposed as the magnetic member 230. The pair of electromagnetic attraction structure 470 and the magnetic attraction member 230 tightly attract the connecting assembly and the first worktable 200, so that the first worktable 200 is fixed in the horizontal direction with respect to the alignment plate 411.

In one embodiment, the top pillar 430 and the electromagnetic attraction structure 470 are driven by the lifting mechanism 500 to ascend and descend respectively and independently; in other embodiments, the top pillar 430 and the electromagnetic attraction structure 470 are driven by the lifting mechanism 500 to ascend or descend synchronously, in this embodiment, the top pillar 430 is configured to be an elastic retractable structure, for example, a spring is disposed below the top pillar 430, when roughly aligning, the top pillar 430 contacts the thimble 220 and applies an upward elastic force to the thimble 220, so as to reduce the resistance when the origin positioning cylinder 440 pushes the first worktable 200; when the alignment is performed, the electromagnetic attraction structure 470 and the magnetic attraction member 230 are attracted, and the top pillar 430 is pressed downward. In other embodiments, the thimble 220 may be configured to be elastically retractable.

The utility model also provides an alignment method applied to the double-table-board workbench, which comprises the following steps:

step 1: the first working table 200 moves to the aligning station, and the first pressing plate cylinder 121 is released;

step 2: the lifting mechanism 500 drives the original point positioning cylinder 440 to rise to a first preset height, and the original point positioning cylinder 440 pushes the first workbench 200 to an original point position;

and step 3: the lifting mechanism 500 drives the UVW alignment table 410 to ascend by a second preset height, so that the UVW alignment table 410 is connected with the first workbench 200 for alignment;

and 4, step 4: the first platen cylinder 121 compresses the first table 200;

and 5: the lifter can drive the UVW alignment table 410 and the origin positioning cylinder 440 to descend, so that the UVW alignment table 410 and the origin positioning cylinder 440 are separated from the first workbench 200;

step 6: the first table 200 moves to the work station and the second table 300 moves to the alignment station.

Wherein, step 2 includes:

step 2.1: the elevating mechanism 500 drives the origin positioning cylinder 440 to rise by a first preset height, so that the origin positioning cylinder 440 rises to the height of the first cam follower 451 provided under the first table 200,

step 2.2: the origin positioning cylinder 440 pushes the first cam follower 451 to position the first table 200 at the origin position.

Step 6 is followed by:

and 7: the second pressure plate cylinder is loosened;

and 8: the lifting mechanism 500 drives the original point positioning cylinder 440 to rise by a first preset height, and the original point positioning cylinder 440 pushes the second workbench 300 to an original point position;

and step 9: the lifting mechanism 500 drives the UVW alignment table 410 to ascend by a second preset height, so that the UVW alignment table 410 is connected with the second workbench 300 for alignment;

step 10: the second platen cylinder compresses the second work table 300;

step 11: the lifter can drive the UVW alignment table 410 and the origin positioning cylinder 440 to descend, so that the UVW alignment table 410 and the origin positioning cylinder 440 are separated from the second workbench 300;

step 12: the second table 300 moves to the work station and the first table 200 moves to the alignment station.

The above-mentioned step 1-5 is a step of aligning the first working table 200, after the first working table 200 is loosened, the first working table is moved to an original point position by the original point positioning cylinder 440, and then the UVW aligning table 410 is precisely aligned, and after the precise alignment, the first working table 200 is locked, and the UVW aligning table 410 and the first working table 200 are separated.

After the alignment of the first workbench 200 is completed, the first workbench 200 slides to the working station along the linear slide rail, and the second workbench 300 slides to the alignment station along the linear slide rail. The above step 7-11 is a step of aligning the second working platform 300, after the alignment of the second working platform 300 is completed, the first working platform 200 returns to the alignment station, the second working platform 300 slides to the working station, and at this time, the step 1 is returned to, and a working cycle is completed. The alignment method provided by the utility model effectively solves the problem that the alignment stroke is limited when the UVW alignment table 410 is applied to the double-table-board workbench through two times of alignment, so that the UVW alignment table 410 can fully exert the advantage of accurate alignment in the double-table-board workbench, and efficient and accurate alignment is realized.

The utility model also provides another alignment method applied to the double-table-board workbench, which comprises the following steps:

step 1: the first table 200 moves to the alignment station;

step 2: a reset camera 480 shoots a target 240 on the first worktable 200 to acquire first position information;

and step 3: comparing the first position information with first preset position information; when the difference between the first position information and the first preset position information is not greater than a preset value, entering step 5; entering step 4 when the difference between the first position information and the first preset position information is greater than a preset value;

and 4, step 4: the UVW alignment table 410 adjusts the first workbench 200 to a first preset position according to the acquired first position information;

and 5: the feeding camera shoots the material on the first workbench 200 to obtain second position information;

step 6: the UVW alignment table 410 adjusts the first workbench 200 according to the obtained second position information to adjust the material on the first workbench 200 to a second preset position.

The alignment method provided by the utility model adopts two times of visual alignment, the position of the first workbench 200 is judged during the first coarse alignment, if the deviation of the position is small, the fine alignment is directly carried out within the alignment range of the fine alignment, and if the deviation of the position is large, the coarse alignment is firstly carried out, so that the position is within the range of the fine alignment. The method can save unnecessary rough alignment, only carries out rough alignment when needed, can save alignment time, simplifies alignment process and improves alignment efficiency.

Wherein, before the step 4, or before the step 6, further comprising:

step a: the lifting mechanism 500 drives the UVW alignment stage 410 to ascend by a predetermined height, so that the UVW alignment stage 410 is connected to the first worktable 200.

After the step 4, the method further comprises the following steps:

step b: the lifting mechanism 500 drives the UVW alignment stage 410 to descend, so that the UVW alignment stage 410 is separated from the first worktable 200 and is reset.

Step 6 is followed by:

and 7: the lifting mechanism 500 drives the UVW alignment table 410 to descend, so that the UVW alignment table 410 is separated from the first workbench 200;

and 8: the first work table 200 moves to the work station and the second work table 300 moves to the alignment station.

It should be noted that the second stage 300 functions identically to the first stage 200, with only the height and width being different so that it can be staggered without substantial difference in other configurations. After the second worktable 300 moves to the alignment station, the alignment process is the same as that of the first alignment table 200, and will not be described again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (28)

1. A dual-countertop, comprising:

the conveying mechanism comprises a first sliding rail and a second sliding rail; a first sliding block is arranged on the first sliding rail; a second sliding block is arranged on the second sliding rail; the two ends of the conveying mechanism are respectively an alignment station and a working station;

the first workbench is connected with the first sliding block; the second workbench is connected with the second sliding block; the first workbench and the second workbench can respectively slide back and forth at the alignment station and the working station along the first slide rail and the second slide rail;

the alignment assembly is arranged at the alignment station; the alignment assembly includes a UVW alignment stage and a connection assembly for connecting the UVW alignment stage to the first stage or the second stage.

2. The dual-countertop workstation of claim 1 wherein a first locking mechanism is attached to said first slide, said first slide being lockably connected to said first workstation by said first locking mechanism.

3. The dual-countertop workstation of claim 2 wherein the first locking mechanism comprises a first platen cylinder and a first platen.

4. The dual-countertop workstation of claim 1 wherein said first slide track is located inboard of said second slide track and the upper surface of said first workstation is lower than the lower surface of said second workstation.

5. The dual-stage table of claim 1, wherein a target is disposed on the first stage, the alignment assembly further comprising a reset camera for imaging the target to determine the position of the first stage.

6. The dual-stage table of claim 5, wherein the target is located at an edge of the first stage.

7. The dual-stage table of claim 5, wherein the UVW alignment stage is located below the alignment station, and the target is located on a lower surface of the first stage.

8. The dual-table top of claim 7 wherein the alignment assembly further comprises a light source for illuminating the target.

9. The dual stage table of claim 5, wherein the target is provided in plurality and the plurality of targets are spaced apart.

10. The dual-stage table of claim 9, wherein at least two of the targets each have one of the reset cameras disposed thereon.

11. The dual-table as claimed in claim 1, wherein the lower surface of the first table is provided with two positioning portions having a center of symmetry with respect to the center of the first table; the UVW counterpoint platform is located counterpoint station below, the subassembly of counterpointing still include two symmetry set up and with two location portion matched with initial point location cylinder.

12. The dual-table top workstation of claim 11, wherein the origin positioning cylinder comprises a cylinder body and a piston rod, the piston rod is connected with a pushing portion, and the pushing portion is adapted to the positioning portion.

13. The dual-table top of claim 12 wherein the positioning portion includes a cam follower, the pushing portion having a positioning recess that mates with the cam follower.

14. The dual-stage table of claim 1, wherein the UVW alignment stage has an alignment plate, the attachment assembly is positioned above the alignment plate, and the attachment assembly is fixed relative to the alignment plate in a horizontal orientation.

15. The dual-countertop workstation of claim 14 wherein said connecting assembly comprises a liftable connecting rod having a connecting portion at a top end thereof.

16. A twin table as defined in claim 15 in which the connecting bar is provided in plurality.

17. A double-countertop as in claim 15 wherein said first lower surface of said table is provided with a connecting socket adapted to said connecting portion.

18. A twin-countertop as defined in claim 17 in which said connecting section is non-circular and said connecting section has a recess or hole which fits into said connecting section.

19. A twin-countertop as defined in claim 17 in which the attachment section includes an electromagnet, the attachment socket has a component or is made of soft magnetic material.

20. The dual-countertop of claim 14, wherein the attachment assembly further comprises a top post, the first table having a thimble corresponding to the top post.

21. The dual-table top of claim 20, wherein the connecting assembly further comprises an electromagnetic attraction structure, and the first table is provided with a magnetic attraction member corresponding to the electromagnetic attraction structure.

22. A twin-countertop as defined in claim 21 in which said electromagnetic magnetic attachment structure includes a plurality of electromagnet units, said magnetic attachment member including a soft magnetic body cooperating with said plurality of electromagnet units.

23. The dual-stage worktable of claim 22, wherein the distance from the top end of the top post to the ejector pin is less than the distance from the top end of the electromagnetic attraction structure to the bottom end of the magnetic attraction member.

24. A twin table as defined in any one of claims 1 to 23 which further includes a lift mechanism for controlling the connection assembly to be raised to connect to the first table or for controlling the connection assembly to be lowered to disconnect from the first table.

25. The dual-stage table of claim 24, wherein the lifting mechanism is disposed below the UVW alignment stage to move the UVW alignment stage up or down.

26. A twin-countertop workstation as recited in claim 24, wherein said lifting mechanism includes a lift table, a guide post and a drive mechanism for driving said lift table; the lifting platform is arranged above the UVW alignment platform, and the guide column vertically penetrates through the lifting platform and is vertically connected to the UVW alignment platform.

27. The dual-stage workbench according to claim 26, wherein said drive mechanism comprises a lead screw, a motor and a bushing, said motor is connected to said lead screw to drive said lead screw to rotate, said bushing is sleeved on said lead screw and fixed to said table.

28. The dual-countertop workstation of claim 1 wherein said conveyor mechanism further comprises a drive motor, a conveyor belt, and a tension wheel; the tensioning wheel is arranged on the inner side of the conveying belt, so that the conveying belt is provided with a first belt surface and a second belt surface, and the first belt surface and the second belt surface synchronously and reversely move; the first sliding block is connected with a first belt surface of the conveying belt, and the second sliding block is connected with a second belt surface of the conveying belt.

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