CN210417267U

CN210417267U - Automatic labeling machine

Info

Publication number: CN210417267U
Application number: CN201921310255.2U
Authority: CN
Inventors: 周路遥; 周林
Original assignee: Shenzhen Desen Precision Machine Co ltd
Current assignee: Shenzhen Desen Precision Machine Co ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-04-28
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses an automatic labeling machine, which comprises a machine table, a conveying mechanism, a label supply mechanism and a manipulator which are arranged on the machine table, the conveying mechanism is used for conveying the circuit board, the label supply mechanism is positioned at one side of the conveying mechanism, the label feeding mechanism comprises a mounting seat, a feeding assembly for winding and unwinding a label belt, a bearing platform for placing the label belt conveyed from the feeding assembly, a receiving assembly for collecting label paper and a driving assembly for driving the label belt to be conveyed between the feeding assembly and the receiving assembly, the label belt comprises label paper and a plurality of labels pasted on the label paper, the emptying assembly, the bearing platform, the receiving assembly and the driving assembly are arranged on the mounting seat, the manipulator comprises an adsorption component used for attaching the label on the label belt to a circuit board. The utility model discloses automatic labeling machine can greatly improve the subsides dress efficiency of label.

Description

Automatic labeling machine

Technical Field

The utility model relates to a label pastes dress technical field, concretely relates to automatic labeling machine.

Background

At present, a label, such as a bar code or a two-dimensional code, is usually attached to a circuit board, so as to store information related to the circuit board through the label, thereby facilitating subsequent acquisition of circuit board information, and specifically, the label can be identified in a scanning manner.

However, the existing circuit board label is mainly adhered by manual work, which has the defect of low working efficiency, and meanwhile, the label adhered by manual work has the defects of easy detachment, easy distortion and circuit board damage.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides an automatic labeling machine to solve because of the current artifical technical problem that the work efficiency is low that pastes the mark and lead to.

In order to solve the technical problem, the utility model provides an automatic labeling machine, which comprises a machine table, a conveying mechanism, a label supply mechanism and a mechanical arm which are arranged on the machine table, the conveying mechanism is used for conveying the circuit board, the label supply mechanism is positioned at one side of the conveying mechanism, the label feeding mechanism comprises a mounting seat, a feeding assembly for winding and unwinding a label belt, a bearing platform for placing the label belt conveyed from the feeding assembly, a receiving assembly for collecting label paper and a driving assembly for driving the label belt to be conveyed between the feeding assembly and the receiving assembly, the label belt comprises label paper and a plurality of labels pasted on the label paper, the emptying assembly, the bearing platform, the receiving assembly and the driving assembly are arranged on the mounting seat, the manipulator comprises an adsorption component used for attaching the label on the label belt to a circuit board.

Preferably, the conveying mechanism comprises two mounting plates arranged at intervals, two driving wheels arranged on the mounting plates and spaced along the length extension direction of the mounting plates, a conveying belt sleeved on the two driving wheels of each mounting plate, and a first motor for driving the driving wheels to rotate, wherein an output shaft of the first motor is connected with one of the driving wheels.

Preferably, automatic labeling machine is still including being used for adjusting two width adjustment mechanism of distance between the mounting panel, width adjustment mechanism includes that two intervals set up first linear guide on the board, at least one setting are in first lead screw on the board and being used for the drive the second motor of first lead screw, the slider and two of first linear guide are connected mobilizable one in the mounting panel, the nut and two of first lead screw be connected mobilizable one in the mounting panel, the output shaft of second motor with the screw rod of first lead screw is connected.

Preferably, the automatic labeling machine further comprises two positioning and clamping mechanisms which are arranged oppositely, each positioning and clamping mechanism comprises a first abutting piece and a second abutting piece, the first abutting pieces are arranged on the mounting plate along the conveying direction of the conveying mechanism, the second abutting pieces are arranged on the inner side of the mounting plate and can move along the vertical direction, and the first abutting pieces and the second abutting pieces can form a clamping space for clamping the circuit board in the vertical direction.

Preferably, the positioning and clamping mechanism further comprises a lifting assembly for driving the second abutting piece to move along the vertical direction, the lifting assembly comprises a lifting plate located below the mounting plate, a third motor arranged at the bottom of the machine table, a movable plate located below the machine table, a second lead screw arranged between the movable plate and the machine table, and a lifting rod movably penetrating through the machine table, an output shaft of the third motor is connected with a screw rod of the second lead screw, a nut of the second lead screw is connected with the movable plate, one end of the lifting rod is fixedly connected with the movable plate, the other end of the lifting rod is fixedly connected with the lifting plate, and the lifting plate is used for jacking the second abutting piece.

Preferably, the automatic labeling machine further comprises two stopping mechanisms arranged at intervals along the conveying direction of the conveying mechanism, a fixing space for accommodating a circuit board is defined between the two stopping mechanisms, and each stopping mechanism comprises an air cylinder arranged on the machine table and a baffle connected with a piston rod of the air cylinder.

Preferably, the blowing subassembly is including rotationally setting up blowing dish on the mount pad, receive the material subassembly including setting up the plummer front end is used for supporting the follow the blowing dish is gone up the label area of conveying and is changeed the roller, is set up the second of plummer bottom is changeed the roller, is located the second is changeed the roller below and is the third of relative arrangement rather than changeing the roller and be used for collecting the fourth roller of label paper, the plummer with be provided with the confession between the mount pad label paper passes in order to convey the clearance of plummer bottom, the second change the roller with the third is changeed the roller and is according to predetermineeing apart distance interval in order to supply label paper passes, drive assembly include the fourth motor and with the speed reducer that the output shaft of fourth motor is connected, the third change the roller respectively with the speed reducer with the fourth is changeed the roller and is connected.

Preferably, the label feeding mechanism further comprises a tensioning assembly for tensioning the label tape, the tensioning assembly being located between the discharging assembly and the carrier table, the tensioning assembly comprising two fifth rollers rotatably disposed on the mounting seat, the two fifth rollers being arranged oppositely up and down and spaced apart by a preset distance for the label tape to pass through.

Preferably, the automatic labeling machine further comprises two portal frames arranged on the machine table at intervals along the direction perpendicular to the conveying direction of the conveying mechanism, a second linear guide rail arranged on the portal frames, a first sliding seat in sliding fit with the second linear guide rail, a third linear guide rail arranged on the first sliding seat, and a second sliding seat in sliding fit with the third linear guide rail, wherein the first sliding seat can move along the direction perpendicular to the conveying direction of the conveying mechanism, the second sliding seat can move along the conveying direction of the conveying mechanism, and the second sliding seat is connected with the manipulator.

Preferably, the automatic labeling machine further comprises a first CCD camera arranged on the manipulator for reading the label information, and a second CCD camera arranged on one side of the label feeding mechanism for detecting the position of the label sucked by the manipulator, and the manipulator further comprises a rotating assembly for driving the adsorbing assembly to rotate.

The embodiment of the utility model provides a beneficial effect lies in: the circuit board is conveyed to the preset position through the conveying mechanism, the conveying mechanism stops conveying after the circuit board reaches the preset position, the manipulator sucks the label to be labeled from the label tape and mounts the label onto the circuit board, and then the conveying mechanism continues conveying to convey the circuit board with the label to the appointed area. So, through the utility model provides an automatic labeling machine replaces current artifical material loading, the subsides dress efficiency of improvement label that can be very big.

Drawings

Fig. 1 is a schematic structural view of an embodiment of an automatic labeling machine of the present invention;

FIG. 2 is a structural diagram of the unassembled manipulator of the automatic labeling machine of the present invention;

FIG. 3 is a structural diagram of the unassembled manipulator and the label feeding mechanism of the automatic labeling machine of the present invention;

FIG. 4 is a structural diagram of a positioning and clamping mechanism of the automatic labeling machine of the present invention;

fig. 5 is a structural diagram of a second supporting piece of the automatic labeling machine of the present invention;

FIG. 6 is a structural diagram of the lifting assembly of the automatic labeling machine of the present invention;

FIG. 7 is a structural diagram of a stopping mechanism of the automatic labeling machine of the present invention;

fig. 8 is a structural view of a label feeding mechanism of the automatic labeling machine of the present invention;

fig. 9 is a structural diagram of a material receiving assembly of the automatic labeling machine of the present invention;

fig. 10 is a structural view of a tension assembly of the automatic labeling machine of the present invention;

fig. 11 is a structural diagram of the manipulator of the automatic labeling machine of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In order to solve the above technical problem, the present invention provides an automatic labeling machine, which is shown in fig. 1 and 2, the automatic labeling machine comprises a machine table 1 and a conveying mechanism 2 arranged on the machine table 1, a label supplying mechanism 3 and a mechanical arm 4, wherein the conveying mechanism 2 is used for conveying a circuit board, the label supplying mechanism 3 is located on one side of the conveying mechanism 2, the label supplying mechanism 3 comprises an installation seat 31, a discharging component 32 used for winding and discharging a label tape, a bearing platform 33 used for placing the label tape conveyed from the discharging component 32, a receiving component 34 used for collecting label paper and a driving component 35 used for driving the label tape to be conveyed between the discharging component 32 and the receiving component 34, the label tape comprises the label paper and a plurality of labels pasted on the label paper, the discharging component 32, the bearing platform 33, the receiving component 34 and the driving component 35 are arranged on the installation seat 31, and the mechanical arm 4 comprises an adsorption component used for pasting the labels on the label tape onto the circuit board.

It will be appreciated that the label tape comprises a label paper to be labelled and used to carry labels, which may in particular be a release paper, including but not limited thereto. The label supply mechanism 3 is mainly used for supplying labels, specifically, a label tape is wound on the discharging assembly 32, when a circuit board needs to be subjected to label mounting, the label tape is driven by the driving assembly 35 to be conveyed from the discharging assembly 32 to the bearing table 33, the label tape is conveyed to the bearing table 33 and is pressed on the table surface of the bearing table, and the label is sucked from the bearing table 33 by the adsorption assembly and is transferred to the circuit board. After the adsorption component absorbs the label, the label paper after the label is taken off in the drive of rethread drive assembly 35 conveys to receiving subassembly 34 to collect the label paper through receiving subassembly 34, carry out recycle to the label paper. The operation is repeated in such a circulating way to realize the automatic feeding of the label tape.

Further, the transport mechanism 2 is for transporting the circuit board, and is reciprocatable in a transport direction of the circuit board. Specifically, the conveying mechanism 2 may be implemented by a driving method of a motor + a synchronous pulley, a motor + a rack and pinion, or a motor + a sprocket chain, including but not limited to this, and those skilled in the art may select the driving method according to actual situations. In addition, the adsorption component mainly utilizes vacuum to adsorb the label, and specifically, the adsorption component comprises a plurality of suction nozzles, and each suction nozzle is connected with an external air pump device through an air pipe so as to vacuumize the suction nozzles through an air pump and adsorb the circuit board by utilizing air pressure difference.

The utility model provides an automatic labeling machine's action principle does: firstly, a circuit board is conveyed to a preset position through a conveying mechanism 2; secondly, the label tape is conveyed to the bearing platform 33 through the label supply mechanism 3, so that the adsorption component can absorb the labels on the label tape; then, adsorbing the label to be labeled from the label tape through an adsorption component, and attaching the label to a specified position of the circuit board; finally, the circuit board with the label attached is conveyed to a designated area through the conveying mechanism 2, and the process is repeated in a circulating mode.

Referring to fig. 3, the conveying mechanism 2 of the present invention includes two mounting plates 21 disposed at intervals, two driving wheels 22 disposed on the mounting plates 21 and spaced apart along the length extending direction of the mounting plates 21, a conveyor belt 23 sleeved on the two driving wheels 22 of each mounting plate 21, and a first motor 24 for driving the driving wheels 22 to rotate, wherein an output shaft of the first motor 24 is connected to one of the driving wheels 22. In this embodiment, the driving wheel 22 connected to the output shaft of the first motor 24 is a driving wheel, the other driving wheel 22 is a driven wheel, the first motor 24 drives the driving wheel to rotate, and the driving wheel drives the driven wheel to rotate through the conveyor belt 23, so as to realize the reciprocating motion of the conveying mechanism 2 along the preset conveying direction. It should be noted that the present invention proposes that the transfer mechanism 2 can be driven by one first motor 24, or can be driven by two first motors 24 separately. Specifically, when the first motor 24 is set to be one, the conveying mechanism 2 further includes a rotating shaft for connecting the two driving wheels 22 located at the same end of the mounting plate 21, so that the driving wheel 22 on one of the mounting plates 21 is driven to rotate by the rotation of the first motor 24, the other driving wheel 22 on the mounting plate 21 is driven by the conveyor belt 23, and the other driving wheel 22 drives the other mounting plate 21 and rotates with the driving wheel 22 located at the same end thereof by the rotating shaft, thereby realizing the conveying of the circuit board in the preset conveying direction. When the first motors 24 are two, the two first motors 24 respectively drive the two driving wheels 22 which are arranged at intervals to rotate, so that the circuit board is conveyed in the preset conveying direction.

In an embodiment, refer to fig. 2 and 3, the utility model provides an automatic labeling machine still includes width adjustment mechanism 5 that is used for adjusting the distance between two mounting panels 21, width adjustment mechanism 5 includes that two intervals set up first linear guide 51 on board 1, at least one set up first lead screw 52 on board 1 and be used for driving first lead screw 52's second motor 53, the slider of first linear guide 51 is connected with mobilizable one in two mounting panels 21, first lead screw 52's nut is connected with mobilizable one in two mounting panels 21, the output shaft of second motor 53 is connected with first lead screw 52's screw rod. In this embodiment, the nut through first lead screw 52 of second motor 53 drive moves along the direction of transfer of perpendicular circuit board to mobilizable one is close to/keeps away from another in driving two mounting panels 21, thereby realizes the regulation of distance between two mounting panels 21, makes the utility model provides an automatic labeling machine can be applicable to the circuit board of equidimension not. Preferably, in an embodiment of the present invention, two first lead screws 52 are spaced apart from each other on the machine platform 1, and both are driven by one second motor 53, and of course, they can also be driven by two second motors 53 respectively, and those skilled in the art can select them according to actual situations.

In another embodiment, referring to fig. 4 and 5, the automatic labeling machine of the present invention further includes two positioning and clamping mechanisms 6 oppositely disposed, each positioning and clamping mechanism 6 includes a first abutting member 61 disposed on the mounting plate 21 along the conveying direction of the conveying mechanism 2 and a second abutting member 62 disposed inside the mounting plate 21 and capable of moving along the vertical direction, and the first abutting member 61 and the second abutting member 62 can form a clamping space for clamping the circuit board in the vertical direction. In this embodiment, the first abutting member 61 includes a plate body disposed on the mounting plate 21 along the length extending direction thereof and a plurality of abutting blocks disposed on the plate body at intervals and extending toward the inner side of the mounting plate 21, and the second abutting member 62 includes two linear guide rails disposed on the mounting plate 21 at intervals and an abutting plate slidably engaged with the linear guide rails, the abutting plate moves upward to lift up the circuit board conveyed on the conveyor belt 23, and finally abuts between the upper abutting block and the lower abutting plate, thereby clamping and fixing the circuit board on the conveyor belt 23.

It can be understood that the second abutting member 62 requires external force to drive when moving upwards, and does not need external force to drive when moving downwards, and can move downwards along the linear guide rail by means of the gravity of the second abutting member. Referring to fig. 6, the positioning and clamping mechanism 6 provided in another embodiment of the foregoing embodiment further includes a lifting assembly 63 for driving the second abutting member 62 to move along the vertical direction, the lifting assembly 63 includes a lifting plate 631 located below the mounting plate 21, a third motor 632 disposed at the bottom of the machine table 1, a movable plate 633 located below the machine table 1, a second lead screw 634 disposed between the movable plate 633 and the machine table 1, and a plurality of lifting rods 635 movably penetrating through the machine table 1, an output shaft of the third motor 632 is connected with a screw of the second lead screw 634, a nut of the second lead screw 634 is connected with the movable plate 633, one end of the lifting rod 635 is fixedly connected with the movable plate 633, the other end of the lifting rod 635 is fixedly connected with the lifting plate 631, and the lifting plate 631 is used for jacking the second abutting. In this embodiment, the third motor 632 drives the second lead screw 634 to rotate, so as to drive the movable plate 633 to move along the vertical direction, and then the lifting rod 635 drives the lifting plate 631 to move along the vertical direction, in the process of moving upwards, the lifting plate 631 will contact and abut against the bottom of the second abutting piece 62, and then move towards the direction close to the first abutting piece 61 under the effect of the lifting plate 631, so as to clamp and fix the circuit board through the first abutting piece 61 and the second abutting piece 62.

In another embodiment, the present invention further includes two stopping mechanisms 7 disposed at intervals along the conveying direction of the conveying mechanism 2, a fixing space for accommodating the circuit board is defined between the two stopping mechanisms 7, and the stopping mechanism 7 includes a cylinder 71 disposed on the machine table 1 and a baffle 72 connected to a piston rod of the cylinder 71. Referring to fig. 3 and 7, after the circuit board is transferred to the predetermined position by the transfer mechanism 2, the transfer mechanism 2 stops transferring immediately, but the circuit board does not stop moving immediately, and may continue to move in the transfer direction under the action of inertia, and therefore, the circuit board may be restricted from continuing to move in the transfer direction of the circuit board under the action of inertia by the stopper mechanism 7. In addition, in order to prevent the circuit board from sliding in the direction opposite to the conveying direction when the label is attached, another stopping mechanism 7 is further provided on the machine table 1 to fix the circuit board by the two stopping mechanisms 7. Specifically, the stopping mechanism 7 comprises an air cylinder 71 and a baffle plate 72, a piston rod of the air cylinder 71 is connected with the baffle plate 72, the two baffle plates 72 are located below the circuit board in the process that the circuit board is conveyed by the conveying mechanism 2, at the moment, the air cylinder 71 is in a contraction state, and after the circuit board reaches a preset position, the air cylinder 71 extends to enable the baffle plate 72 to be higher than the circuit board, so that the circuit board is stopped and fixed.

In still another embodiment, referring to fig. 8 and 9, the discharging assembly 32 of the present invention includes a discharging tray 311 rotatably disposed on the mounting seat 31, the receiving assembly 34 includes a first rotating roller 341 disposed at the front end of the carrier 33 for supporting the label tape conveyed from the discharging tray 311, a second rotating roller 342 disposed at the bottom of the carrier 33, a third rotating roller 343 disposed below the second rotating roller 342 and opposite thereto, and a fourth rotating roller 344 for collecting the label paper, a gap is disposed between the carrier 33 and the mounting seat 31 for passing the label paper to convey to the bottom of the carrier 33, the second rotating roller 342 and the third rotating roller 343 are spaced apart by a predetermined distance for passing the label paper, the driving assembly 35 includes a fourth motor and a speed reducer connected to an output shaft of the fourth motor, and the third rotating roller 343 is connected to the speed reducer and the fourth rotating roller 344, respectively. It should be noted that before labeling, the label tape is sleeved on the first rotating roller 341, passes through the second rotating roller 342 and the third rotating roller 343, and is sleeved on the fourth rotating roller 344, so that after the fourth motor rotates, the third rotating roller 343 is driven to rotate after the speed reduction by the speed reducer, and since the second rotating roller 342 and the third rotating roller 343 are arranged at an interval from top to bottom, after the label tape is arranged between the two rollers, the label tape is transferred in a designated direction under the action of the third rotating roller 343, thereby realizing the transfer of the label tape from the material placing tray 311 to the bearing table 33, and the transfer of the label paper from the bearing table 33 to the fourth rotating roller 344. It is understood that the structural design is only exemplary and not restrictive, and those skilled in the art can make the same or substantially the same structural design according to the proposed structure of the present embodiment.

Further, referring to fig. 10, the label feeding mechanism 3 of the present invention further includes a tensioning assembly 8 for tensioning the label tape, the tensioning assembly 8 is located between the discharging assembly 32 and the bearing platform 33, the tensioning assembly 8 includes two fifth rotating rollers 81 rotatably disposed on the mounting seat 31, and the two fifth rotating rollers 81 are disposed opposite to each other vertically and spaced apart by a predetermined distance for the label tape to pass through. In this embodiment, a tensioning unit 8 is disposed between the discharging unit 32 and the carrier table 33 to support and tension the label tape transferred from the discharging unit 32 to the carrier table 33, the tensioning unit 8 specifically includes two fifth rollers 81 disposed opposite to each other at a predetermined distance, and the label tape passes through the two fifth rollers 81.

In still another embodiment, referring to fig. 1 and 11, the automatic labeling machine of the present invention further includes two gantries 11 disposed on the machine table 1 at intervals along the conveying direction of the vertical conveying mechanism 2, a second linear guide 12 disposed on the gantry 11, a first slide 13 sliding-fitted with the two second linear guides 12, a third linear guide 14 disposed on the first slide 13, and a second slide 15 sliding-fitted with the third linear guide 14, wherein the first slide 13 is movable along the conveying direction of the vertical conveying mechanism 2, the second slide 15 is movable along the conveying direction of the conveying mechanism 2, and the second slide 15 is connected with the manipulator 4. In this embodiment, the first sliding base 13 straddles the two second linear guide rails 12, and a motor drives a lead screw to rotate, and a nut of the lead screw is connected with the first sliding base 13, so that the first sliding base 13 moves along the first linear guide rail 51. Meanwhile, a third linear guide rail 14 is disposed on the first sliding seat 13, and the third linear guide rail 14 is slidably matched with the second sliding seat 15, as described above, the third linear guide rail can also be driven by a motor and a lead screw, including but not limited to this.

In still another embodiment, the present invention provides an automatic labeling machine further comprising a first CCD camera 9 disposed on the manipulator 4 for reading label information, and a second CCD camera 10 disposed on one side of the label supplying mechanism 3 for detecting the position of the label sucked by the manipulator 4, wherein the manipulator 4 further comprises a rotating component 42 for driving the adsorbing component to rotate. In this example, before the label is sucked, the label to be labeled needs to be scanned by the first CCD camera 9 to read the relevant information of the label to be labeled. After the first CCD camera 9 reads the label information, the label is adsorbed by the adsorption component and moved to a position right above the second CCD camera 10, so that the second CCD camera 10 scans the label to detect the position information of the label, and it is determined whether the position of the label after being adsorbed matches the label mounting position on the circuit board. If the label is matched with the label mounting position on the circuit board, the adsorption component is mounted on the circuit board, and if the label is not matched with the label mounting position on the circuit board, the adsorption component is driven to rotate by a certain angle through the rotating component 42 so as to adjust the orientation of the label adsorbed by the adsorption component.

What just go up be the utility model discloses a part or preferred embodiment, no matter be characters or the drawing can not consequently restrict the utility model discloses the scope of protection, all with the utility model discloses a holistic thought down, utilize the equivalent structure transform that the contents of the description and the drawing do, or direct/indirect application all includes in other relevant technical field the utility model discloses the within range of protection.

Claims

1. An automatic labeling machine is characterized by comprising a machine table, a conveying mechanism, a label supply mechanism and a manipulator which are arranged on the machine table, the conveying mechanism is used for conveying the circuit board, the label supply mechanism is positioned at one side of the conveying mechanism, the label feeding mechanism comprises a mounting seat, a feeding assembly for winding and unwinding a label belt, a bearing platform for placing the label belt conveyed from the feeding assembly, a receiving assembly for collecting label paper and a driving assembly for driving the label belt to be conveyed between the feeding assembly and the receiving assembly, the label belt comprises label paper and a plurality of labels pasted on the label paper, the emptying assembly, the bearing platform, the receiving assembly and the driving assembly are arranged on the mounting seat, the manipulator comprises an adsorption component used for attaching the label on the label belt to a circuit board.

2. The automatic labeling machine according to claim 1, wherein said conveying mechanism comprises two spaced mounting plates, two driving wheels disposed on said mounting plates and spaced apart along the length extension of said mounting plates, a conveyor belt fitted over said two driving wheels of each of said mounting plates, and a first motor for driving said driving wheels to rotate, an output shaft of said first motor being connected to one of said driving wheels.

3. The automatic labeling machine according to claim 2, further comprising a width adjusting mechanism for adjusting a distance between the two mounting plates, wherein the width adjusting mechanism comprises two first linear guide rails arranged on the machine table at intervals, at least one first screw rod arranged on the machine table, and a second motor for driving the first screw rod, a sliding block of the first linear guide rail is connected with a movable one of the two mounting plates, a nut of the first screw rod is connected with a movable one of the two mounting plates, and an output shaft of the second motor is connected with a screw rod of the first screw rod.

4. The automatic labeling machine according to claim 2, further comprising two oppositely disposed positioning and clamping mechanisms, wherein the positioning and clamping mechanisms comprise a first abutting member disposed on the mounting plate along the conveying direction of the conveying mechanism and a second abutting member disposed inside the mounting plate and capable of moving along a vertical direction, and the first abutting member and the second abutting member can form a clamping space for clamping a circuit board in the vertical direction.

5. The automatic labeling machine according to claim 4, wherein the positioning and clamping mechanism further comprises a lifting assembly for driving the second abutting member to move in a vertical direction, the lifting assembly comprises a lifting plate located below the mounting plate, a third motor arranged at the bottom of the machine table, a movable plate located below the machine table, a second lead screw arranged between the movable plate and the machine table, and a plurality of lifting rods movably penetrating through the machine table, an output shaft of the third motor is connected with a screw of the second lead screw, a nut of the second lead screw is connected with the movable plate, one end of each lifting rod is fixedly connected with the movable plate, the other end of each lifting rod is fixedly connected with the lifting plate, and the lifting plate is used for jacking the second abutting member.

6. The automatic labeling machine according to claim 1, further comprising two stopping mechanisms spaced apart along a conveying direction of the conveying mechanism, wherein a fixing space for accommodating a circuit board is defined between the two stopping mechanisms, and the stopping mechanisms comprise air cylinders arranged on the machine table and baffles connected with piston rods of the air cylinders.

7. The automatic labeling machine according to claim 1, wherein said discharging assembly comprises a discharging tray rotatably disposed on said mounting seat, the receiving assembly comprises a first rotating roller arranged at the front end of the bearing table and used for supporting the label belt conveyed from the material placing disc, a second rotating roller arranged at the bottom of the bearing table, a third rotating roller positioned below the second rotating roller and arranged opposite to the second rotating roller, and a fourth rotating roller used for collecting label paper, a gap for the label paper to pass through to be conveyed to the bottom of the bearing table is arranged between the bearing table and the mounting seat, the second rotary roller and the third rotary roller are spaced at a preset distance for the label paper to pass through, the driving assembly comprises a fourth motor and a speed reducer connected with an output shaft of the fourth motor, and the third rotating roller is connected with the speed reducer and the fourth rotating roller respectively.

8. An automatic labelling machine according to claim 1, wherein said label supply mechanism further comprises a tensioning assembly for tensioning said label strip, said tensioning assembly being located between said drop assembly and the carrier station, said tensioning assembly comprising two fifth rollers rotatably mounted on said mounting base, said fifth rollers being disposed in opposed relationship one above the other and spaced apart a predetermined distance for passage of said label strip.

9. The automatic labeling machine according to claim 1, further comprising two portal frames disposed on said machine table at intervals in a direction perpendicular to the conveying direction of said conveying mechanism, a second linear guide rail disposed on said portal frames, a first carriage slidably engaged with said two second linear guide rails, a third linear guide rail disposed on said first carriage, and a second carriage slidably engaged with said third linear guide rail, said first carriage being movable in the direction perpendicular to the conveying direction of said conveying mechanism, said second carriage being movable in the conveying direction of said conveying mechanism, said second carriage being connected to said robot.

10. The automatic labeling machine according to claim 1, further comprising a first CCD camera provided on said robot for reading information of said label, and a second CCD camera provided on a side of said label feeding mechanism for detecting a position of the label sucked by said robot, said robot further comprising a rotating member for driving said suction member to rotate.