Automatic labeling device for box body

Abstract

The invention discloses an automatic labeling device for a box body. The automatic labeling device comprises a conveying platform, a label feeding assembly and a labeling assembly. The label feeding assembly comprises an unwinding disc, a winding disc and a paper stripping plate, and a label is stripped when the release paper bypasses the paper stripping plate; the labeling assembly comprises a moving assembly and a label taking plate, and the label taking plate adsorbs labels through label adsorption holes and then attaches the labels to the box body. The device detects the position of the box body through the laser displacement sensor, controls the transverse moving motor to adjust the labeling position, and the photoelectric sensing switch controls start and stop of conveying. And the moving assembly realizes multidirectional movement by adopting a cylinder combination and can adapt to boxes with different sizes. The automatic labeling device realizes automatic labeling, is high in adaptability, is flat and bubble-free in labeling, and remarkably improves the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic labeling, more particularly, it relates to a box automatic labeling device. BACKGROUND

[0002] After product inspection and qualification, the qualified certificate needs to be pasted on the surface of the box. In the prior art, automatic sealing is usually used, and after sealing, manual pasting is used, which is not only time-consuming and laborious, but also has poor quality, and wrinkles and bubbles are prone to occur. In addition, due to the electrostatic effect, the label is prone to edge lifting, and the labeling efficiency is slow. It is not conducive to the automatic operation of the assembly line, and the production efficiency is reduced.

[0003] Chinese Patent Publication No. CN204957946U, published on January 31, 2016, has the title of an automatic double-sided adhesive tape equipment for removing release paper, which discloses an automatic double-sided adhesive tape equipment for removing release paper, which realizes automatic adhesive and release paper function by controlling the cooperation between the release paper drive wheel, the adhesive block mechanism and the adhesive tape pre-breakage adjusting block through PLC. It can make the labeling precision higher, reduce manual labor and improve production efficiency. However, the above structure can only label the same size box, and cannot label different size boxes at the same time. SUMMARY

[0004] The present application overcomes the deficiency that the labeling device in the prior art can only label the same size box, and cannot label different size boxes, and provides a box automatic labeling device which can automatically adapt to the size of the box and can automatically label different size boxes, is easy to use and can improve production efficiency.

[0005] In order to solve the above technical problems, the present application adopts the following technical scheme: a box automatic labeling device, comprising: a conveying platform for conveying the box; a labeling sending assembly arranged above the conveying platform, comprising a unwinding disc, a winding disc and a paper stripping plate; when the release paper passes the side edge of the paper stripping plate, the label on the release paper is stripped, and then the release paper is wound on the winding disc; a labeling assembly arranged on one side of the paper stripping plate, comprising a moving assembly and a label taking plate arranged on the moving assembly; the label taking plate is provided with a plurality of label suction holes; the label taking plate sucks the label, and the moving assembly drives the label taking plate to paste the label on the label taking plate on the box located on the conveying platform.

[0006] In the application, the label to be attached is sucked on the release paper, when the release paper passes the edge of the stripping board, the label will be separated from the release paper due to the greater rigidity of the label, and when the label is separated from the release paper by a larger area, the label is left on the release paper by about one fifth, at this time, the moving assembly controls the label taking plate to move downward, and the label is sucked on the label taking plate through the label suction hole, then the moving assembly moves upward, so that the label is completely separated from the release paper, and the label moves forward by a distance to avoid interference between the release paper and the stripping board during the label attaching; then the moving assembly drives the label taking plate to move downward, and the label is attached on the upper surface of the box body, realizing the function of automatic label attaching. The application can not only realize automatic label attaching, but also can adapt to different sizes of the box body, and attach the label on the box body of different sizes, having the characteristics of convenient use, high automation degree and being able to significantly improve the production efficiency.

[0007] As preferred, the moving assembly comprises a first air cylinder arranged in the vertical direction and a second air cylinder arranged in the horizontal direction; the first air cylinder and the second air cylinder cooperate to control the movement of the label taking plate in the horizontal and vertical directions.

[0008] The first air cylinder and the second air cylinder cooperate to control the movement of the label taking plate in the horizontal and vertical directions, realizing the actions of taking down the label and attaching the label.

[0009] As preferred, the first air cylinder is fixedly arranged at the output end of the second air cylinder, and the label taking plate is fixedly arranged at the output end of the first air cylinder.

[0010] When the label is completely separated from the release paper by about one fifth of the area, at this time, the first air cylinder drives the label taking plate to move downward, the label suction hole on the label taking plate sucks the label, then the first air cylinder drives the label to move upward, and the label is completely separated from the release paper, then the second air cylinder drives the first air cylinder to stretch out and retract by a distance, so that the label does not interfere with the stripping board when the first air cylinder moves downward, the first air cylinder moves downward, so that the label is pressed on the carton, then the label suction hole stops sucking, so that the label is attached on the carton. Then the first air cylinder and the second air cylinder are reset, and wait for the next label attaching.

[0011] As preferred, the moving assembly comprises a third air cylinder arranged in the vertical direction, and the second air cylinder is arranged on the output end of the third air cylinder.

[0012] The stroke distance of the third air cylinder is longer, so that the label taking plate can move by a larger displacement in the vertical direction, and then the carton with a larger volume variation range can be labeled.

[0013] As preferred, a gantry is arranged on the conveying platform, a horizontal transverse device is arranged on the gantry, and the label feeding assembly and the label attaching assembly are arranged on the output end of the horizontal transverse device.

[0014] The horizontal transverse moving device controls the displacement of the label feeding assembly and the label sticking assembly in the horizontal direction.

[0015] Preferably, the horizontal transverse moving device comprises a horizontal screw rod and a horizontal sliding block matched with the horizontal screw rod; an installation base plate is fixedly arranged on the horizontal sliding block, and the label feeding assembly and the label sticking assembly are fixedly arranged on the installation base plate.

[0016] The rotation of the horizontal screw rod is controlled to control the position of the horizontal sliding block in the horizontal direction, thereby controlling the movement of the installation base plate, and further controlling the displacement of the label feeding assembly and the label sticking assembly in the horizontal direction of the conveying platform.

[0017] Preferably, a photoelectric sensor switch is arranged on one side of the gantry.

[0018] When the carton moves to the position of the photoelectric sensor switch, the photoelectric sensor switch can detect the carton, at which time the conveying platform is controlled to stop moving, and then the label feeding assembly and the label sticking assembly stick labels on the carton.

[0019] Preferably, the winding and pressing device comprises a fixed wheel and a pressing wheel arranged in parallel; a pressing rod is arranged at both ends of the rotating shaft of the pressing wheel, and the pressing rod is rotated to adjust the pressing force between the fixed wheel and the pressing wheel.

[0020] The pressing wheel has a certain damping force when rotating, so that when the unwinding disc and the winding disc stop moving, the pressing wheel and the fixed wheel can immediately stop moving, thereby more accurately controlling the start and stop of the release paper.

[0021] Preferably, the label feeding assembly further comprises a first guide roller, a second guide roller and a third guide roller, and the first guide roller and the second guide roller are arranged on one side of the paper stripping plate; the release paper passes around the first guide roller, then around the side edge of the paper stripping plate, then around the second guide roller, then around the third guide roller, and finally winds around the winding disc.

[0022] When the release paper passes through the first guide roller, the paper stripping plate and then the second guide roller, the release paper can form a relatively large bending angle at the side edge of the paper stripping plate, so that the label can be smoothly separated from the release paper.

[0023] Preferably, the winding motor is further arranged, and the output end of the winding motor drives the fixed wheel and the second guide roller to rotate synchronously through a belt drive.

[0024] The winding motor drives the fixed wheel and the second guide roller to rotate synchronously Compared with the prior art, the application has the beneficial effects that: the label is sucked on the release paper, when the release paper passes the edge of the stripping board, the label is separated from the release paper due to the greater rigidity of the label, and when the label is separated from the release paper by a large area, the label is left on the release paper by about one fifth, at this time, the moving assembly controls the label taking plate to move downward, the label is sucked on the label taking plate through the label sucking hole, then the moving assembly moves upward, so that the label is completely separated from the release paper, after the label is completely separated from the release paper, the label moves forward by a distance, so as to avoid interference between the release paper and the stripping board when the label is reattached; then the moving assembly drives the label taking plate to move downward, and the label is attached on the upper surface of the box, so as to realize the automatic labeling function. The application can not only realize automatic labeling, but also can adapt to different sizes of the box, and attach the label on the box with different sizes, and has the characteristics of convenient use, high automation degree and high production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a perspective view of the application.

[0026] Figure 2 is a perspective view of the label feeding assembly and the label taking assembly of the application.

[0027] Figure 3 is a perspective view of the label feeding assembly and the label taking assembly of the application from another angle.

[0028] Figure 4 is a perspective view of the gantry of the application.

[0029] Figure 5 is a front view of the gantry of the application and a local enlarged view thereof.

[0030] Figure 6 is a bottom view of the label taking plate in embodiment 2 of the application.

[0031] Figure 7 is Figure 6 a sectional view in A-A direction in figure.

[0032] In the figure: 1, conveying platform, 11, conveying roller, 12, laser displacement sensor, 13, photoelectric induction switch; 2, label feeding assembly, 21, unwinding disc, 211, unwinding motor, 22, winding disc, 23, stripping board, 24, first guide roller, 25, second guide roller, 26, third guide roller, 27, pressing mounting frame, 271, fixed wheel, 272, pressing wheel, 273, pressing rod, 28, static elimination plate; 3, moving assembly, 31, first air cylinder, 32, second air cylinder, 33, third air cylinder; 4, take the label plate, 41, suction label hole, 42, installation sliding slot, 43, push force cylinder, 431, side perforation, 44, sliding rod, 441, first rod, 442, compression rod, 443, auxiliary piston, 45, main oil cylinder, 46, main piston, 461, main rod, 47, first spring, 48, second spring; 5, gantry, 51, stand, 52, cross column, 53, horizontal screw, 54, horizontal sliding block, 55, installation base plate, 56, transverse movement motor; 6, winding motor, 61, first pulley, 62, second pulley, 63, third pulley. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be further described below by specific examples and in conjunction with the drawings: Example 1: refer to Figures 1 to 4 As shown in the figure, an automatic box labeling device comprises: A conveying platform 1 for conveying boxes; A label feeding assembly 2 is arranged above the conveying platform 1, comprising a unwinding disc 21, a winding disc 22 and a paper stripping plate 23; when the release paper passes the side edge of the paper stripping plate 23, the label on the release paper is peeled off, and then the release paper is wound on the winding disc 22; A labeling assembly is arranged on one side of the paper stripping plate 23, comprising a moving assembly 3 and a take label plate 4 arranged on the movable end of the moving assembly 3, the take label plate 4 is provided with a plurality of suction label holes 41, the take label plate 4 is connected with an external vacuum negative pressure machine through a hose to provide negative pressure for the take label plate 4 to suck the label; the take label plate 4 sucks the label, the moving assembly 3 drives the take label plate 4 to paste the label on the take label plate 4 on the box located on the conveying platform 1.

[0034] In this embodiment, the label to be pasted is sucked on the release paper, when the release paper passes the edge of the paper stripping plate 23, because the rigidity of the label is large, it will separate from the release paper, and when the label separates from the release paper by a large area, the label is left on the release paper about one fifth, at this time, the moving assembly 3 controls the take label plate 4 to move downward, the label is adsorbed on the take label plate 4 through the suction label hole 41, then the moving assembly 3 moves upward, so that the label and the release paper are completely separated, after the label and the release paper are completely separated, the label moves forward a distance, to avoid interference between the release paper and the paper stripping plate 23 when pasting the label; then the moving assembly 3 drives the take label plate 4 to move downward, to paste the label on the upper surface of the box, to realize the function of automatic labeling. The present application not only can realize automatic labeling, but also can adapt to different sizes of boxes, to paste labels on different sizes of boxes, has the characteristics of convenient use, high automation degree and can significantly improve production efficiency.

[0035] In one of the embodiments, an electrostatic elimination plate 28 is arranged above the stripping paper board 23, and the label will contact the electrostatic elimination plate 28 during the moving process, so as to eliminate the static electricity on the label, and make the label adhere to the carton more flatly.

[0036] In one of the embodiments, the conveying platform 1 can adopt a conveying belt structure to convey the carton; the conveying platform 1 in the embodiment comprises a plurality of conveying rollers 11 arranged in parallel, and adjacent conveying rollers 11 are driven by a chain, wherein one of the conveying rollers 11 is connected with the output end of a conveying motor, and the conveying distance of the carton is controlled by controlling the conveying motor.

[0037] The gantry 5 is arranged on the conveying platform 1, and the gantry 5 comprises two vertical columns 51 arranged on both sides of the conveying platform 1 and a horizontal column 52 arranged on the top of the two vertical columns 51 and extending along the width direction of the conveying platform 1. The horizontal column 52 is provided with a horizontal transverse moving device, and the label feeding assembly 2 and the label sticking assembly are arranged on the output end of the horizontal transverse moving device.

[0038] The horizontal transverse moving device comprises a horizontal screw 53 arranged on the horizontal column 52 and a horizontal sliding block 54 matched with the horizontal screw 53; the horizontal sliding block 54 is fixedly provided with a mounting base plate 55, and the label feeding assembly 2 and the label sticking assembly are fixedly arranged on the mounting base plate 55. Specifically, the horizontal column 52 is further provided with a transverse moving motor 56, the output end of the transverse moving motor 56 is connected with the horizontal screw 53, the position of the horizontal sliding block 54 in the horizontal direction is controlled by controlling the rotation of the horizontal screw 53, so as to control the movement of the mounting base plate 55, and further control the transverse displacement of the label feeding assembly 2 and the label sticking assembly on the conveying platform 1.

[0039] Therefore, in order to accurately move the mounting base plate 55 above the carton by the transverse moving motor 56, the laser displacement sensor 12 is arranged on both sides of the conveying platform 1 in the width direction, so as to detect the position of the carton on the conveying platform 1 in real time, and further control the transverse moving motor 56 to move the mounting base plate 55 above the carton.

[0040] In addition, the photoelectric sensing switch 13 is further arranged on the gantry 5, and specifically, the photoelectric sensing switch 13 is arranged on the vertical column 51, so that when the carton moves to the position of the photoelectric sensing switch 13, the photoelectric sensing switch 13 can detect the carton, at this time, the conveying platform 1 is controlled to stop moving, and then after the label feeding assembly 2 and the label sticking assembly stick the labels on the carton, the conveying platform 1 continues to move until the next carton moves to the position of the photoelectric sensing switch 13, and the above-mentioned label sticking process is repeated.

[0041] In one embodiment, the label feeding assembly 2 further comprises a first guide roller 24, a second guide roller 25 and a third guide roller 26, the first guide roller 24 and the second guide roller 25 are arranged on one side of the stripping board 23; the release paper passes through the first guide roller 24, then passes through the side edge of the stripping board 23, then passes through the second guide roller 25, then passes through the third guide roller 26, and finally winds on the winding disc 22. When the release paper passes through the first guide roller 24, the stripping board 23 and then the second guide roller 25, the release paper can form a larger bending angle at the side edge of the stripping board 23, so that the label can be smoothly separated from the release paper.

[0042] A winding and pressing device is further arranged on the mounting base plate 55, which comprises a pressing mounting frame 27, and a fixed wheel 271 and a pressing wheel 272 are arranged in parallel on the pressing mounting frame 27; the fixed wheel 271 is fixedly arranged on the pressing mounting frame 27, and the pressing wheel 272 can move towards or away from the fixed wheel 271. Specifically, a pressing rod 273 is arranged at both ends of the rotating shaft of the pressing wheel 272, and the pressing rod 273 is rotated to adjust the pressing force between the fixed wheel 271 and the pressing wheel 272. The pressing wheel 272 has a certain damping force when rotating, so that when the unwinding disc 21 and the winding disc 22 stop moving, the pressing wheel 272 and the fixed wheel 271 can immediately stop moving, thereby more accurately controlling the start and stop of the release paper.

[0043] The unwinding disc 21, the winding disc 22, the stripping board 23, the first guide roller 24, the second guide roller 25, the third guide roller 26 and the pressing mounting frame 27 in the present application are arranged on one side end face of the mounting base plate 55. A winding motor 6 is further arranged on the mounting base plate 55, a first pulley 61 is arranged on the output end of the winding motor 6, the rotating shaft of the fixed wheel 271 passes through the mounting base plate 55 and is connected with a second pulley 62, and the rotating shaft of the second guide roller 25 passes through the mounting base plate 55 and is connected with a third pulley 63; the first pulley 61 and the second pulley 62 are driven by a first belt, and the second pulley 62 and the third pulley 63 are driven by a second belt, so as to realize synchronous rotation of the fixed wheel 271 and the second guide roller 25 driven by the winding motor 6. The unwinding disc 21 is further connected with an unwinding motor 211, and the unwinding motor 211 is rotated to control the rotation of the unwinding disc 21. Therefore, by controlling the rotation speed of the winding motor 6 and the unwinding motor 211 respectively, the release paper can be kept in a tensioned state, so that the label can be smoothly stripped from the release paper when passing through the stripping board 23.

[0044] In one embodiment, the moving assembly 3 comprises a first air cylinder 31 arranged in the vertical direction and a second air cylinder 32 arranged in the horizontal direction; the first air cylinder 31 and the second air cylinder 32 cooperate to control the movement of the label taking plate 4 in the horizontal and vertical directions.

[0045] The first cylinder 31 in the embodiment is fixedly arranged at the output end of the second cylinder 32, and the label taking plate 4 is fixedly arranged at the output end of the first cylinder 31. Therefore, when the label is completely peeled off from the release paper with about one fifth of the area of the label remaining, the first cylinder 31 drives the label taking plate 4 to move downward at this time, the label taking holes 41 on the label taking plate 4 adsorb the label, then the first cylinder 31 drives the label to move upward, and the label is completely separated from the release paper. Then the second cylinder 32 drives the first cylinder 31 to extend and retract by a distance, so that the label does not interfere with the paper stripping plate 23 when the first cylinder 31 moves downward. The first cylinder 31 moves downward, so that the label is pressed on the carton. Then the label taking holes 41 stop adsorbing air, so that the label is attached to the carton. Then the first cylinder 31 and the second cylinder 32 are reset, and the next labeling is waited.

[0046] The working principle of the embodiment is as follows: (1) The carton to be labeled moves on the conveying platform 1. When the carton passes the laser displacement sensor 12 on both sides of the conveying platform 1, the position of the carton on the conveying platform 1 is detected, and the horizontal moving motor 56 is controlled to move the mounting base plate 55 to the top of the carton; (2) The carton continues to move on the conveying platform 1. When the carton moves to the position of the photoelectric sensor 13, the photoelectric sensor 13 can detect the carton, and the conveying platform 1 is controlled to stop moving at this time; (3) The label taking assembly 2 moves, so that the label on the release paper is peeled off from the release paper when passing the paper stripping plate 23. When the label is completely peeled off from the release paper with about one fifth of the area of the label remaining, the winding disc 22 and the unwinding disc 21 stop moving; (3) The first cylinder 31 drives the label taking plate 4 to move downward at this time, and the label taking holes 41 on the label taking plate 4 adsorb the label. Then the first cylinder 31 drives the label to move upward, and the label is completely separated from the release paper. Then the second cylinder 32 drives the first cylinder 31 to extend and retract by a distance, so that the label does not interfere with the paper stripping plate 23 when the first cylinder 31 moves downward. The first cylinder 31 moves downward, so that the label is pressed on the carton. Then the label taking holes 41 stop adsorbing air, so that the label is attached to the carton; (4) Then the first cylinder 31 and the second cylinder 32 are reset, and the next labeling is waited. After the label taking assembly labels the carton, the conveying platform 1 continues to move until the next carton moves to the position of the photoelectric sensor 13, and the above labeling process is repeated.

[0047] In this embodiment, the label is sucked on the release paper, when the release paper passes the edge of the stripping board 23, due to the greater rigidity of the label, it will be separated from the release paper, and when the label is separated from the release paper by a larger area, the label is left on the release paper by about one fifth, at this time the moving assembly 3 controls the label taking plate 4 to move downward, and the label is sucked on the label taking plate 4 through the suction label hole 41, then the moving assembly 3 moves upward, so that the label is completely separated from the release paper, after the label is completely separated from the release paper, the label moves forward by a distance, to avoid interference between the release paper and the stripping board 23 when re-labeling; then the moving assembly 3 drives the label taking plate 4 to move downward, and the label is attached to the upper surface of the box, realizing the function of automatic labeling. The present application can not only realize automatic labeling, but also can adapt to different sizes of boxes, and can paste labels on different size boxes, which has the characteristics of convenient use, high automation degree and can significantly improve production efficiency.

[0048] Embodiment 2: The structure in this embodiment is similar to that in embodiment 1, the difference is that a third cylinder 33 is arranged, and the second cylinder 32 is arranged at the output end of the third cylinder 33. The stroke distance of the third cylinder 33 in this embodiment is longer, so that the label taking plate 4 can move more in the vertical direction, and then the paper box with a larger volume change range can be labeled.

[0049] Embodiment 3: Referring to Figures 1 to 7 The box automatic labeling device comprises: A conveying platform 1 for conveying boxes; A label feeding assembly 2 arranged above the conveying platform 1, comprising a unwinding disc 21, a winding disc 22 and a stripping board 23; when the release paper passes the side edge of the stripping board 23, the label on the release paper is peeled off, and then the release paper is wound on the winding disc 22; A label sticking assembly arranged on one side of the stripping board 23, comprising a moving assembly 3 and a label taking plate 4 arranged on the moving end of the moving assembly 3, the label taking plate 4 is provided with a plurality of suction label holes 41, and the label taking plate 4 is connected with an external vacuum negative pressure machine through a hose to provide negative pressure for the label taking plate 4; the label taking plate 4 sucks the label, and the moving assembly 3 drives the label taking plate 4 to stick the label on the label taking plate 4 on the box located on the conveying platform 1.

[0050] In the embodiment, the label to be attached is sucked on the release paper, when the release paper passes the edge of the stripping board 23, due to the greater rigidity of the label, the label will be separated from the release paper, and when the label is separated from the release paper by a large area, and the label is left on the release paper by about one fifth, at this time, the moving assembly 3 controls the label taking plate 4 to move downward, and the label is sucked on the label taking plate 4 through the label suction hole 41, then the moving assembly 3 moves upward, so that the label is completely separated from the release paper, and the label moves forward by a distance to avoid interference between the release paper and the stripping board 23 when the label is attached; then the moving assembly 3 drives the label taking plate 4 to move downward, and the label is attached on the upper surface of the box, realizing the function of automatic labeling. The application can not only realize automatic labeling, but also adapt to different sizes of boxes, and attach labels on different sizes of boxes, which has the characteristics of convenient use, high automation and can significantly improve production efficiency.

[0051] In one embodiment, an electrostatic elimination plate 28 is arranged above the stripping board 23, and the label contacts the electrostatic elimination plate 28 during movement, so as to eliminate static electricity on the label, so that the label is attached on the carton more flatly.

[0052] In one embodiment, the conveying platform 1 can adopt a conveying belt structure to convey the carton; the conveying platform 1 in the embodiment includes a plurality of conveying rollers 11 arranged in parallel, adjacent conveying rollers 11 are driven by a chain, and one of the conveying rollers 11 is connected with the output end of a conveying motor, so as to control the conveying distance of the carton by controlling the conveying motor.

[0053] The gantry 5 is arranged on the conveying platform 1, the gantry 5 includes two vertical columns 51 arranged on both sides of the conveying platform 1 and a horizontal column 52 arranged on the top of the two vertical columns 51, and the horizontal column 52 is arranged along the width direction of the conveying platform 1. The horizontal column 52 is arranged with a horizontal transverse moving device, and the label feeding assembly 2 and the label attaching assembly are arranged on the output end of the horizontal transverse moving device.

[0054] The horizontal transverse moving device includes a horizontal screw 53 arranged on the horizontal column 52 and a horizontal sliding block 54 matched with the horizontal screw 53; the horizontal sliding block 54 is fixedly arranged with a mounting base plate 55, and the label feeding assembly 2 and the label attaching assembly are fixedly arranged on the mounting base plate 55. Specifically, the horizontal column 52 is further arranged with a transverse moving motor 56, the output end of the transverse moving motor 56 is connected with the horizontal screw 53, the rotation of the horizontal screw 53 is controlled, the position of the horizontal sliding block 54 in the horizontal direction is controlled, the movement of the mounting base plate 55 is controlled, and then the displacement of the label feeding assembly 2 and the label attaching assembly in the transverse direction of the conveying platform 1 is controlled.

[0055] Therefore, in order to enable the transverse motor 56 to accurately move the mounting substrate 55 to the top of the carton, laser displacement sensors 12 are provided on both sides of the width direction of the conveying platform 1, so as to detect the position of the carton on the conveying platform 1 in real time, and then control the transverse motor 56 to move the mounting substrate 55 to the top of the carton.

[0056] In addition, a photoelectric sensor switch 13 is also provided on the gantry 5. Specifically, the photoelectric sensor switch 13 is provided on the column 51, so that when the carton moves to the position of the photoelectric sensor switch 13, the photoelectric sensor switch 13 can detect the carton. At this time, the conveying platform 1 is controlled to stop moving. After the label delivery component 2 and the labeling component have finished labeling the carton, the conveying platform 1 continues to move until the next carton moves to the position of the photoelectric sensor switch 13, and the above labeling process is repeated.

[0057] In one embodiment, the label feeding assembly 2 further includes a first guide roller 24, a second guide roller 25, and a third guide roller 26. The first guide roller 24 and the second guide roller 25 are both disposed on one side of the peeling paper board 23. The release paper passes around the first guide roller 24, then around the side of the peeling paper board 23, then around the second guide roller 25, then around the third guide roller 26, and finally around the winding reel 22. As the release paper passes through the first guide roller 24, the peeling paper board 23, and then the second guide roller 25, it forms a large bend angle on the side of the peeling paper board 23, thereby allowing the label to be smoothly separated from the release paper.

[0058] A winding and clamping device is also provided on the mounting base 55. This device includes a clamping mounting frame 27, on which a fixed wheel 271 and a clamping wheel 272 are mounted in parallel. The fixed wheel 271 is fixed to the clamping mounting frame 27, while the clamping wheel 272 can move toward or away from the fixed wheel 271. Specifically, pressure rods 273 are provided at both ends of the rotating shaft of the clamping wheel 272. Rotating the pressure rods 273 adjusts the clamping force between the fixed wheel 271 and the clamping wheel 272. The clamping wheel 272 exerts a certain damping force when rotating, so that when the unwinding reel 21 and the winding reel 22 stop moving, the clamping wheel 272 and the fixed wheel 271 stop moving immediately, thereby enabling more precise control of the start and stop of the release paper.

[0059] The unwinding reel 21, winding reel 22, stripping paper board 23, first guide roller 24, second guide roller 25, third guide roller 26, and clamping mounting frame 27 in the present application are all arranged on a side end surface of the mounting base 55. A winding motor 6 is also arranged on the mounting base 55, and a first pulley 61 is arranged at the output end of the winding motor 6. The rotating shaft of the fixed pulley 271 passes through the mounting base 55 and is connected to the second pulley 62. The rotating shaft of the second guide roller 25 passes through the mounting base 55 and is connected to the third pulley 63. The first pulley 61 and the second pulley 62 are driven by a first belt, and the second pulley 62 and the third pulley 63 are driven by a second belt, thereby enabling the winding motor 6 to drive the fixed pulley 271 and the second guide roller 25 to rotate synchronously. The unwinding reel 21 is also connected to the unwinding motor 211. The rotation of the unwinding motor 211 controls the rotation of the unwinding reel 21. Therefore, by controlling the rotation speeds of the rewinding motor 6 and the unwinding motor 211 respectively, the release paper can be kept in a tensioned state, so that the label can be smoothly peeled off from the release paper when the release paper passes through the peeling paper board 23 .

[0060] In one embodiment, the moving assembly 3 includes a first cylinder 31 arranged in the vertical direction and a second cylinder 32 arranged in the horizontal direction; the first cylinder 31 and the second cylinder 32 cooperate to control the movement of the label picking plate 4 in the horizontal and vertical directions.

[0061] In this embodiment, the first cylinder 31 is fixedly mounted at the output end of the second cylinder 32, and the label removal plate 4 is fixedly mounted at the output end of the first cylinder 31. Therefore, when approximately one-fifth of the label area remains completely peeled off the release paper, the first cylinder 31 drives the label removal plate 4 downward, and the label suction holes 41 on the label removal plate 4 absorb the label. The first cylinder 31 then drives the label upward, completely separating it from the release paper. The second cylinder 32 then drives the first cylinder 31 outward a certain distance, ensuring that the label does not interfere with the peeling plate 23 during the downward movement of the first cylinder 31. The first cylinder 31 then moves downward, pressing the label against the carton. The label suction holes 41 then stop suctioning, securing the label to the carton. The first and second cylinders 31 and 32 then return to their original positions, ready for the next label application.

[0062] Reference Figure 5 、 Figure 6 and Figure 7 As shown, this embodiment is similar in structure to Embodiment 1 or Embodiment 2, except that mounting slots 42 are provided on both sides of the label removal plate 4 in the width direction, and a thrust cylinder 43 is provided within the label removal plate 4, with both ends of the thrust cylinder 43 corresponding to the two mounting slots 42. The thrust cylinder 43 is arranged in the same direction as the length of the mounting slots 42, which is also the same direction as the label is peeled off the release paper.

[0063] The slide rod 44 is provided with a first rod 441 close to the first cylinder 31 and a pressing rod 442 far away from the first cylinder 31. The first rod 441 is slidingly arranged in the thrust cylinder 43, and the end of the first rod 441 is provided with a secondary piston 443 in sealing cooperation with the thrust cylinder 43.

[0064] The side hole 431 is arranged in the middle of the thrust cylinder 43, and the main oil cylinder 45 is arranged on the top of the side hole 431. The main oil cylinder 45 is provided with a main piston 46 in sealing cooperation with the side wall of the main oil cylinder 45. The upper end surface of the main piston 46 is provided with a main rod 461 penetrating through the main oil cylinder 45 and connected with the output end of the first cylinder 31. The first spring 47 is abutted between the main piston 46 and the bottom of the main oil cylinder 45. The main oil cylinder 45 and the thrust cylinder 43 are both provided with hydraulic oil.

[0065] In the embodiment, in order to make the label adhere to the carton more firmly, the pressing rod 442 and other structures are arranged. Specifically, when the label is pasted on the carton, the main rod 461 continues to move in the vertical direction towards the carton under the driving of the first cylinder 31 (or the third cylinder 33). At this time, the main piston 46 at the end of the main rod 461 overcomes the pressure of the first spring 47, and the main piston 46 moves in the main oil cylinder 45, so as to push the hydraulic oil in the main oil cylinder 45 into the thrust cylinder 43 from the side hole 431. The hydraulic oil entering the thrust cylinder 43 drives the secondary piston 443 to move along the thrust cylinder 43, so as to simultaneously drive the first rods 441 on both sides of the thrust cylinder 43 to move towards both sides. The first rods 441 drive the pressing rods 442 to move towards both sides through the slide rods 44. In the process of moving, the pressing rods 442 act on the label, so as to make the label adhere to the surface of the carton. After the above process is completed, the first cylinder 31 and the second cylinder 32 are reset. Under the action of the first spring 47, the main piston 46 is reset, so as to make the hydraulic oil in the thrust cylinder 43 suck back to the main oil cylinder 45, thereby resetting the secondary piston 443, and further resetting the first rods 441, the slide rods 44 and the pressing rods 442.

[0066] Since the pressing rod 442 in the embodiment moves on the surface of the label, it can push out the air between the label and the carton. Compared with vertically pressing the label on the carton, the label can be more firmly adhered to the surface of the carton.

[0067] In addition, the outer surface of the pressing rod 442 in the embodiment is provided with a ring of sponge layer. Under the action of the sponge layer, the air between the label and the carton can be discharged, so as to more firmly adhere the label to the surface of the carton. In order to better reset the first rod 441, the second spring 48 is arranged in the thrust cylinder 43 to drive the first rod 441 to move towards the side hole 431.

[0068] The working principle of the embodiment is as follows: (1) The carton to be labeled moves on the conveying platform 1, and when the carton passes the laser displacement sensor 12 on both sides of the conveying platform 1, the position of the carton on the conveying platform 1 is detected, and the horizontal moving motor 56 is controlled to move the mounting base plate 55 to the top of the carton; (2) The carton continues to move on the conveying platform 1, and when the carton moves to the position of the photoelectric sensor 13, the photoelectric sensor 13 can detect the carton, and at this time the conveying platform 1 is controlled to stop moving; (3) The label on the release paper is peeled off when the label passes the paper stripping plate 23, and when the label is completely peeled off from the release paper, the winding disc 22 and the unwinding disc 21 stop moving; (3) At this time, the first air cylinder 31 drives the label taking plate 4 to move downward, and the label taking hole 41 on the label taking plate 4 adsorbs the label, and then the first air cylinder 31 drives the label to move upward, so that the label is completely separated from the release paper. Then the second air cylinder 32 drives the first air cylinder 31 to retract a distance, so that the label does not interfere with the paper stripping plate 23 when the first air cylinder 31 moves downward. The first air cylinder 31 moves downward, so that the label is pressed on the carton, and then the label taking hole 41 stops adsorbing air, so that the label is attached to the carton; (4) Then the first air cylinder 31 and the second air cylinder 32 are reset, and the next labeling is waited. After the labeling assembly labels the carton, the conveying platform 1 continues to move until the next carton moves to the position of the photoelectric sensor 13, and the above labeling process is repeated.

[0069] In the embodiment, the label is adsorbed on the release paper, and when the release paper passes the edge of the paper stripping plate 23, the label will be separated from the release paper due to the greater rigidity of the label. When the label is separated from the release paper by a large area, the label remains about one fifth on the release paper. At this time, the moving assembly 3 controls the label taking plate 4 to move downward, and the label is adsorbed on the label taking plate 4 through the label taking hole 41. Then the moving assembly 3 moves upward, so that the label is completely separated from the release paper. After the label is completely separated from the release paper, the label moves forward a distance to avoid interference between the release paper and the paper stripping plate 23 during the next labeling. Then the moving assembly 3 drives the label taking plate 4 to move downward, and the label is attached to the upper surface of the carton, so as to realize the automatic labeling function. The application can not only realize automatic labeling, but also adapt to different sizes of cartons and attach labels to different sizes of cartons. The application has the characteristics of convenient use, high automation and high production efficiency.

[0070] The above-mentioned embodiments are only the preferred schemes of the present application, and do not limit the present application in any form, and other variants and modifications can be made without departing from the technical scheme recited in the claims.

Claims

1. A box automatic labeling device, characterized in that: include: Conveying platform for conveying boxes; The label delivery assembly, which is located above the conveyor platform, includes a reel, a reel, and a peeling board. When the release paper passes around the side of the peeling board, the label on the release paper is peeled off, and then the release paper is wound on the reel. The labeling assembly arranged on one side of the peeling paper board includes a moving assembly and a label picking plate arranged at the movable end of the moving assembly. The label picking plate is provided with a plurality of label suction holes. The label picking plate sucks the label, and the moving assembly drives the label picking plate to stick the label on the label picking plate on the box body located on the conveying platform.

2. The automatic box labeling device according to claim 1 is characterized in that: The moving assembly comprises a first cylinder arranged in the vertical direction and a second cylinder arranged in the horizontal direction; the first cylinder and the second cylinder cooperate to control the movement of the mark taking plate in the horizontal and vertical directions.

3. The automatic box labeling device according to claim 2, characterized in that: The first cylinder is fixedly arranged at the output end of the second cylinder, and the mark taking plate is fixedly arranged at the output end of the first cylinder.

4. The automatic box labeling device according to claim 3 is characterized in that: The moving assembly includes a third cylinder arranged in a vertical direction, and the second cylinder is arranged on the output end of the third cylinder.

5. The automatic box labeling device according to any one of claims 1 to 4, characterized in that: A gantry is provided on the conveying platform, a horizontal transverse moving device is provided on the gantry, and a label delivery component and a labeling component are both provided at the output end of the horizontal transverse moving device.

6. The automatic box labeling device according to claim 5, characterized in that: The horizontal traverse device includes a horizontal screw rod and a horizontal slider matched with the horizontal screw rod; a mounting base is fixedly provided on the horizontal slider, and the label feeding component and the labeling component are both fixedly provided on the mounting base.

7. The automatic box labeling device according to claim 5, characterized in that: A photoelectric sensor switch is provided on one side of the gantry.

8. The automatic box labeling device according to any one of claims 1 to 4, characterized in that: It also includes a winding and pressing device, including a fixed wheel and a pressing wheel arranged in parallel; pressure rods are provided at both ends of the rotating shaft of the pressing wheel, and the pressure rods are rotated to adjust the pressing force between the fixed wheel and the pressing wheel.

9. The automatic box labeling device according to claim 8, characterized in that: The label feeding assembly also includes a first guide roller, a second guide roller and a third guide roller. The first guide roller and the second guide roller are both arranged on one side of the peeling paper board; the release paper passes around the first guide roller, then around the side of the peeling paper board, then around the second guide roller, then around the third guide roller, and finally around the winding disk.

10. The automatic box labeling device according to claim 9, characterized in that: The invention also includes a winding motor, the output end of which is driven by a belt to drive the fixed wheel and the second guide roller to rotate synchronously.

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