Automatic labeling machine and labeling method

Abstract

The present invention provides an automatic labeling machine, which belongs to the field of labeling machines, and includes a frame, a material sorting mechanism, a labeling mechanism, a material unloading mechanism and a transfer mechanism arranged on the frame. The material sorting mechanism, the labeling mechanism and the material unloading mechanism are arranged in sequence along the conveying direction of the material box, and the material box is conveyed and transferred between the material sorting mechanism, the labeling mechanism and the material unloading mechanism through the transfer mechanism; the material sorting mechanism is used to adjust the position and direction of the material, the labeling mechanism is used to attach a hard label to the surface of the material, and the material unloading mechanism is used to send the material box out of the automatic labeling machine. This application forms a complete set of automatic labeling production lines for hard labels by providing a material sorting mechanism, a labeling mechanism, a material unloading mechanism and a transfer mechanism, which does not require manual participation, has high production efficiency, strong consistency and good effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of labeling machines, and more specifically, relates to an automatic labeling machine and a labeling method. Background Art

[0002] The labeling device is a device that uses adhesive to stick labels on specified packaging containers. Sticking hard labels is an indispensable part of modern packaging. At present, the labeling machines produced in my country are mainly used for labels of some soft materials, but there are few labeling machines for sticking hard labels. For example, the hard labels used on car keys are sometimes even manually pasted, which easily causes the surface of the hard labels to be dirty, and the pasted hard labels are not beautiful enough. Manual labeling is slow and inefficient. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic labeling machine, aiming to solve the technical problems of low efficiency and poor effect of manual hard labeling in the prior art.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide an automatic labeling machine, comprising:

[0005] A frame, a material sorting mechanism, a labeling mechanism, a material unloading mechanism and a transfer mechanism arranged on the frame, wherein the material sorting mechanism, the labeling mechanism and the material unloading mechanism are arranged in sequence along the conveying direction of the material box, and the material box is conveyed and transferred among the material sorting mechanism, the labeling mechanism and the material unloading mechanism through the transfer mechanism; the material sorting mechanism is used to adjust the position and direction of the material, the labeling mechanism is used to attach the hard label to the surface of the material, and the material unloading mechanism is used to send the material box out of the automatic labeling machine.

[0006] Furthermore, the material sorting mechanism includes a rotating component and a tilting component, and the rotating component and the tilting component are arranged in sequence along the conveying direction of the material box. The material box is transferred from the rotating component to the tilting component through the transfer mechanism. The rotating component is used to adjust the direction of the material, and the tilting component is used to adjust the position of the material.

[0007] Furthermore, the tilting assembly includes a support platform, a rotating shaft and a motor, the support platform is used to support the material box; the rotating shaft is located at the bottom of the support platform, and the two ends of the rotating shaft are respectively located at two diagonal positions of the support platform, and the rotating shaft is fixedly connected to the support platform; the motor is connected to the rotating shaft, and is used to drive the rotating shaft to rotate around its own axis.

[0008] Furthermore, the labeling mechanism includes a label peeling component and a label suction component, wherein the label peeling component is used to peel the hard label off the base paper for carrying the hard label, and the label suction component is used to suck the hard label off the base paper and attach it to the material.

[0009] Furthermore, the label stripping assembly includes a first clamping assembly, a second clamping assembly and a first driving member; the first clamping assembly and the second clamping assembly are arranged opposite to each other, and a corresponding through hole is opened on the frame so that the second clamping assembly can pass through the frame; the base paper is laid on the frame, the first clamping assembly presses one end of the base paper, and the second clamping assembly presses the other end of the base paper; the second clamping assembly is connected to the first driving member, and the first driving member drives the second clamping assembly to move downward to pull the base paper, and when the base paper moves downward through the through hole, the hard label adhered to the base paper peels off the part of the base paper that passes through the through hole and hangs above the side wall of the through hole.

[0010] Furthermore, the label suction assembly includes a plurality of cylinders, a bracket and suction nozzles corresponding to the plurality of cylinders one by one; the suction nozzle is fixed to the bottom of the cylinder, and the cylinder is used to drive the suction nozzle to absorb the material; a longitudinal slide rail and a transverse slide bar are provided on the bracket, and the transverse slide bar can slide on the longitudinal slide rail, and a slideway is also provided on the bracket, and when the transverse slide bar slides, the plurality of cylinders slide along the track of the slideway to change the spacing between the plurality of cylinders.

[0011] Furthermore, the transfer mechanism includes a grabbing plate assembly, which is used to transfer and transport the material box from the labeling assembly to the unloading assembly; the grabbing plate assembly includes a second driving member, a chuck, a clamping arm and a clamping claw; the second driving member drives the chuck to move up and down; one end of the clamping arm is hinged to the outer wall of the chuck, and the clamping claw is fixed to the other end of the clamping arm; when the second driving member drives the chuck to move downward, the clamping arm opens, so that the clamping claw is pressed against the four corners of the material box.

[0012] Furthermore, the unloading mechanism includes a material receiving belt and a driving part, the material receiving belt receives the material box from the grabbing plate assembly, and multiple material boxes can be stacked on the material receiving belt; the material receiving belt is connected to the driving part, and the driving part drives the material receiving belt to discharge the material box out of the automatic labeling machine.

[0013] Furthermore, a height sensor is provided on the opposite side of the material receiving belt, and the height sensor is used to monitor the height of the material boxes stacked on the material receiving belt.

[0014] On the other hand, the present application also provides a labeling method for an automatic labeling machine, comprising the steps of:

[0015] The position and direction of the material in the material box are adjusted by a material sorting mechanism, wherein the material sorting mechanism comprises a rotating component and a tilting component, the rotating component is used to adjust the direction of the material, and the tilting component is used to adjust the position of the material;

[0016] The hard label is attached to the surface of the material by a labeling mechanism, wherein the labeling mechanism includes a label peeling component and a label suction component, the label peeling component is used to peel the hard label off the base paper, and the hard label is on the base paper; the label suction component is used to suck the hard label peeled off from the label peeling component off the base paper and then attach the hard label peeled off from the label peeling component to the material;

[0017] Transferring the material box from the labeling mechanism to the unloading mechanism through a grabbing plate assembly;

[0018] The material box is discharged from the automatic labeling machine through the unloading mechanism.

[0019] The beneficial effect of the automatic labeling machine and labeling method provided by the present invention is that: the present application forms a complete set of automatic labeling production line for hard labels by providing a material sorting mechanism, a labeling mechanism, a material unloading mechanism and a transfer mechanism, which does not require manual participation, has high production efficiency, strong consistency and good effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the shaft side structure of the automatic labeling machine provided by an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the structure of a label stripping assembly provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the structure of a label suction assembly provided in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of a grab plate assembly provided in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the structure of a material discharging mechanism provided in an embodiment of the present invention;

[0026] Figure 6A schematic structural diagram of a material sorting mechanism provided in an embodiment of the present invention.

[0027] In the figure: 1, material sorting mechanism; 2, labeling mechanism; 3, material unloading mechanism; 4, transfer mechanism; 11, rotating assembly; 12, tilting assembly; 21, label stripping assembly; 22, label suction assembly; 5, material box; 6, material; 7, hard label; 211, first pressing assembly; 212, second pressing assembly; 8, bottom paper; 9, frame; 221, cylinder; 220, slideway; 222, nozzle; 223, bracket; 224, longitudinal Towards the slide rail; 225, the horizontal slide bar; 411, the first electric cylinder; 4121, the lifting electric cylinder; 4122, the transverse electric cylinder; 413, the chuck; 414, the clamping arm; 415, the clamping claw; 31, the receiving belt; 32, the discharging belt; 33, the height sensor; 321, the first driving part; 111, the rotating motor; 112, the flat plate; 113, the lifting electric cylinder; 121, the supporting platform; 122, the rotating shaft; 123, the tilting motor. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] See also Figures 1 to 6The present invention provides an automatic labeling machine for hard labels, which is used to affix hard labels 7 to materials 6 placed in a material box 5, and includes a material sorting mechanism 1, a labeling mechanism 2, a material unloading mechanism 3, and a transfer mechanism 4. The material sorting mechanism 1, the labeling mechanism 2, the material unloading mechanism 3, and the transfer mechanism 4 are all arranged on a frame 9 and arranged in sequence along the conveying direction of the material box 5. The transfer mechanism 4 is used to transfer the material box 5 between the material sorting mechanism 1, the labeling mechanism 2, and the material unloading mechanism 3. The material sorting mechanism 1 is used to adjust the position and direction of the material 6 in the material box 5; the labeling mechanism 2 is used to attach the hard label 7 to the surface of the material 6, and the material unloading mechanism 3 is used to send the material 6 with the hard label 7 out of the automatic labeling machine.

[0033] The present application forms a complete set of automatic labeling production line by providing a material sorting mechanism 1, a labeling mechanism 2, a material unloading mechanism 3 and a transfer mechanism 4, which does not require human intervention, has high production efficiency, strong consistency and good effect.

[0034] Specifically, the material sorting mechanism 1 includes a rotating component 11 and a tilting component 12. Figure 6 As shown, when the material box 5 is placed on the flat plate 112, the material box 5 may be placed upside down, and the material box 5 needs to be rotated 180 degrees. The bottom of the flat plate 112 is connected to a rotating motor 111, and at the same time, a lifting electric cylinder 113 is provided below the rotating motor 111; because the flat plate 112 is initially placed on the belt, the flat plate 112 cannot be directly rotated, and the lifting electric cylinder 113 needs to be used to lift the rotating motor 111 and the flat plate 112 at the same time, and then the rotating motor 111 works to rotate the flat plate 112 and the material box 5 on the flat plate 112 synchronously by 180 degrees. After adjusting the direction of the material box 5, since there are multiple materials 6 in the material box 5, these materials 6 are respectively located in small squares, and the position of each material 6 relative to the small square is also different, in order to facilitate the subsequent unified labeling, the position of the material 6 in the small square needs to be adjusted.

[0035] The tilting assembly 12 is used to adjust the position of the material 6. After the rotation of the material box 5 is completed, it is pushed horizontally by the push plate to the work station where the tilting assembly 12 acts. The tilting assembly 12 includes a support 121, a rotating shaft and a tilting motor 123. The material box 5 is supported on the support 121. The rotating shaft is located at the bottom of the support 121, and the two ends of the rotating shaft are respectively located at two diagonal positions of the support 121. The rotating shaft and the support 121 are fixedly connected; the output shaft of the tilting motor 123 is connected to the rotating shaft through a toothed belt wheel and a synchronous belt. When the tilting motor 123 is working, it drives the rotating shaft to rotate around the central axis of the rotating shaft. Since the support 121 and the rotating shaft are fixed, when the rotating shaft rotates, the support 121 tilts in the direction of rotation of the rotating shaft. The material 6 in the material box 5 slides in the same direction under the action of its own gravity and stops at the same position relative to each small square, completing the adjustment of the position of the material 6.

[0036] After the material 6 is adjusted in direction and position by the material sorting mechanism 1, it is transferred to the workstation of the labeling mechanism 2 via a belt conveyor for labeling. Figure 3 As shown, the labeling mechanism 2 includes a label stripping component 21 and a label suction component 22. The label stripping component 21 is used to peel the hard label 7 off the backing paper 8 for carrying the hard label 7, and the label suction component 22 is used to suck the hard label 7 off the backing paper 8 and attach it to the material 6. Specifically, the label stripping component 21 includes a first pressing component 211 and a second pressing component 212. The first pressing component 211 and the second pressing component 212 are arranged opposite to each other. The backing paper 8 is laid on the frame 9. The first pressing component 211 and the second pressing component 212 press the two ends of the backing paper 8 respectively. The second pressing component 212 is connected to the first driving member. The first driving member drives the second pressing component 212 to move up and down. The frame 9 is provided with a through hole for the second pressing component 212 to move up and down. When the second pressing component 212 moves, the first pressing component 211 moves synchronously to make the backing paper 8 move as a whole. When the backing paper 8 passes through the through hole, the part of the backing paper 8 that passes through the through hole is peeled off from the hard label 7, while the hard label 7 is still partially adhered to the backing paper 8; taking a hard label 7 on the backing paper 8 as an example, the hard label 7 is initially completely adhered to the backing paper 8, and when the edge of the hard label 7 is aligned with the edge of the through hole during the process of the second pressing component 212 pulling the backing paper 8, the hard label 7 begins to peel off from the backing paper 8, and when the hard label 7 is partially peeled off from the backing paper 8, for example, one-third of the hard label 7 has been peeled off from the backing paper 8, then the label suction component 22 works to suck the hard label 7 off the backing paper 8. Since the hard label 7 is initially completely adhered to the backing paper 8, if the label peeling component 21 is not used to peel off part of it from the backing paper 8, it will be very difficult to directly use the label suction component 22 to suck the hard label 7, and the label peeling component 21 improves the peeling efficiency of the hard label 7.

[0037] In this embodiment, the label suction assembly 22 comprises a plurality of cylinders 221, a bracket 223 and suction nozzles 222 corresponding to the plurality of cylinders 221. Specifically, the number of cylinders 221 and suction nozzles 222 corresponds to the number of small squares in each row of the material box 5. For example, the material box 5 has 5 small squares in each row, that is, there are 5 materials 6 in each row. Then, correspondingly, the number of cylinders 221 and suction nozzles 222 is 5 respectively. The suction nozzle 222 is fixed at the bottom of the cylinder 221. When the cylinder 221 is working, the suction nozzle 222 is driven downward to suck the hard label 7 on the bottom paper 8. At the same time, the process of attaching the hard label 7 to the surface of the material 6 is also completed by the action of the cylinder 221. The bracket 223 is provided with a longitudinal slide rail 224 and a transverse slide bar 225. Two longitudinal slide rails 224 are provided on both sides of the bracket 223. The transverse cross bar is horizontal on the two slide rails, and a slide bar is provided on the transverse cross bar to slide up and down on the longitudinal slide rail 224. The bracket 223 is provided with slideways 220 corresponding to the number of cylinders 221. When the transverse slide bar 225 slides up and down, the cylinders 221 move along the track of the slideway 220, and the distance between each cylinder 221 changes. The distance between each cylinder 221 is adjusted so that the distance between each cylinder 221 is roughly equal to the distance between the materials 6 in the material box 5, so that when multiple suction nozzles 222 suck the hard labels 7, there is no need to excessively adjust the position of the cylinder 221, thereby improving efficiency.

[0038] Furthermore, in one embodiment, the automatic labeling machine provided by the present application includes two labeling mechanisms 2. In order to fully utilize the space, the two labeling mechanisms 2 are respectively located on both sides of the conveying direction of the material box 5, and the two labeling mechanisms 2 are arranged adjacent to each other. There are usually more than one row of materials 6 in the material box 5. In the present application, there are two rows of materials 6 in the material box 5. When one labeling mechanism 2 has finished labeling one row of materials 6, in order to improve production efficiency, two labeling mechanisms 2 are arranged continuously to label all the materials 6 in one material box 5 at one time.

[0039] In this embodiment, the transfer mechanism 4 includes a plurality of transfer units, which are respectively used to transfer the material box 5 from different starting points to different end points. One of the transfer units is a grabbing plate assembly, which is used to transfer the material box 5 from the labeling mechanism 2 to the unloading mechanism 3. Figure 4As shown, the grabbing plate assembly includes: a second driving member, a chuck 413, a clamping arm 414 and a clamping claw 415. The second driving member includes a first driving unit and a second driving unit, the first driving unit is preferably a first electric cylinder 411, and the second driving unit preferably includes a lifting electric cylinder 4121 and a lateral electric cylinder 4122. The second electric cylinder is arranged on the first electric cylinder 411. At the same time, the second electric cylinder drives the chuck 413 to move up and down. The chuck 413 is cylindrical as a whole. One end of the clamping arm 414 is hinged to the outer wall of the chuck 413. In this embodiment, there are 4 clamping arms 414, and the 4 clamping walls are hinged to the outer wall of the chuck 413 at equal intervals. The number and distribution of the clamping arms 414 depend on the shape of the material box 5. In this embodiment, the material box 5 is square, corresponding to 4 clamping arms 414. A clamping claw 415 is fixed to the other end of each clamping arm 414. When the second driving unit drives the chuck 413 to move downward, the clamping arm 414 opens, and the clamping claw 415 at the end thereof presses against the four corners of the material box 5. When the lifting electric cylinder 4121 drives the chuck 413 to rise, the chuck 413 is driven to rise synchronously through the clamping claw 415. Finally, the transverse electric cylinder 4122 transports the chuck 413 horizontally to the unloading mechanism 3.

[0040] like Figure 5 As shown, the unloading mechanism 3 includes a material receiving belt 31 and a driving part, and the driving part includes a first driving part 321 and a second driving part. The material receiving belt 31 receives the material box 5 from the grab plate assembly, and the material receiving belt 31 is integrally slidably connected to a back plate, and the first driving part 321 drives the material receiving belt 31 to slide up and down on the back plate. At the same time, the material receiving belt 31 is directly connected to the second driving part. When the material receiving belt 31 slides down to the same height as the discharge belt 32, the second driving part works to transfer the material box 5 to the discharge belt 32. Multiple material boxes 5 can be stacked on the material receiving belt 31 at the same time. During the stacking process of the material boxes 5, the first driving part 321 drives the material receiving belt 31 to descend in stages to free up longitudinal space. In one embodiment, a height sensor 33 is provided on the opposite side of the receiving belt 31, and the height sensor 33 is used to monitor the height of the material box 5 stacked on the receiving belt 31. When the stacking height reaches the value that can be detected by the height sensor 33, the material box 5 is sent to the discharge belt 32 through the second driving part, and the discharge belt 32 sends the material box 5 out of the automatic labeling machine.

[0041] The present application also provides a labeling method for an automatic labeling machine, comprising the steps of:

[0042] 1. The material sorting mechanism adjusts the position and direction of the material in the material box, wherein the material sorting mechanism includes a rotating component and a tilting component, the rotating component is used to adjust the direction of the material, and the tilting component is used to adjust the position of the material;

[0043] 2. The labeling mechanism attaches the hard label to the surface of the material, wherein the labeling mechanism includes a label peeling component and a label suction component, wherein the label peeling component is used to peel the hard label off the backing paper for carrying the hard label, and the label suction component is used to suck the hard label peeled off the backing paper off the backing paper and then attach it to the material;

[0044] 3. The grab plate assembly transfers the material box from the labeling mechanism to the unloading mechanism;

[0045] 4. The unloading mechanism discharges the material box out of the automatic labeling machine.

[0046] The labeling method of the automatic labeling machine provided in the present application forms a complete automated labeling process, which does not require human intervention, has high production efficiency, strong consistency and good effect, by adjusting the position and direction of the material through the material sorting mechanism, attaching the hard label to the surface of the material through the labeling mechanism and discharging the material out of the automatic labeling machine through the unloading mechanism.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic labeling machine for attaching hard labels to materials placed in a material box, characterized in that , including a frame, a material sorting mechanism, a labeling mechanism, a material unloading mechanism and a transfer mechanism arranged on the frame, the material sorting mechanism, the labeling mechanism and the material unloading mechanism are arranged in sequence along the conveying direction of the material box, and the material box is conveyed and transferred between the material sorting mechanism, the labeling mechanism and the material unloading mechanism through the transfer mechanism; the material sorting mechanism is used to adjust the position and direction of the material, the labeling mechanism is used to attach the hard label to the surface of the material, and the material unloading mechanism is used to send the material box out of the automatic labeling machine; The material sorting mechanism comprises a rotating assembly and a tilting assembly, which are arranged in sequence along the conveying direction of the material box. The material box is transferred from the rotating assembly to the tilting assembly through the transfer mechanism. The rotating assembly is used to adjust the direction of the material, and the tilting assembly is used to adjust the position of the material. The labeling mechanism includes a label peeling component and a label suction component, wherein the label peeling component is used to peel the hard label off the base paper for carrying the hard label, and the label suction component is used to suck the hard label off the base paper and attach it to the material; The transfer mechanism includes a grabbing plate assembly, and the grabbing plate assembly is used to transfer and transport the material box from the labeling mechanism to the unloading mechanism; the grabbing plate assembly includes a second driving member, a chuck, a clamping arm and a clamping claw; The second driving member drives the chuck to move up and down; one end of the clamp arm is hinged to the outer wall of the chuck, and the clamp claw is fixed to the other end of the clamp arm; when the second driving member drives the chuck to move downward, the clamp arm opens, so that the clamp claw is pressed against the four corners of the material box; The unloading mechanism includes a material receiving belt and a driving part. The material receiving belt receives the material box from the grabbing plate assembly, and a plurality of material boxes can be stacked on the material receiving belt. The material receiving belt is connected to the driving part, and the driving part drives the material receiving belt to discharge the material box from the automatic labeling machine.

2. The automatic labeling machine according to claim 1, characterized in that The tilting assembly includes a support platform, a rotating shaft and a motor, wherein the support platform is used to support the material box; the rotating shaft is located at the bottom of the support platform, and the two ends of the rotating shaft are respectively located at two diagonal positions of the support platform, and the rotating shaft is fixedly connected to the support platform; the motor is connected to the rotating shaft, and is used to drive the rotating shaft to rotate around its own axis.

3. The automatic labeling machine according to claim 1, characterized in that: The label stripping assembly includes a first clamping assembly, a second clamping assembly and a first driving member; the first clamping assembly and the second clamping assembly are arranged opposite to each other, and a corresponding through hole is provided on the frame so that the second clamping assembly can pass through the frame; Said The base paper is laid on the frame, the first clamping assembly clamps one end of the base paper, and the second clamping assembly clamps the other end of the base paper; the second clamping assembly is connected to the first driving member, and the first driving member drives the second clamping assembly to move downward to pull the base paper. When the base paper moves downward through the through hole, the hard label is peeled off the part of the base paper that passes through the through hole and hangs above the side wall of the through hole.

4. The automatic labeling machine according to claim 1, characterized in that: The label suction assembly includes a plurality of cylinders, a bracket and suction nozzles corresponding to the plurality of cylinders one by one; the suction nozzle is fixed to the bottom of the cylinder, and the cylinder is used to drive the suction nozzle to absorb the material; a longitudinal slide rail and a transverse slide bar are provided on the bracket, and the transverse slide bar can slide on the longitudinal slide rail, and a slideway is also provided on the bracket, and when the transverse slide bar slides, the plurality of cylinders slide along the track of the slideway to change the spacing between the plurality of cylinders.

5. The automatic labeling machine according to claim 1, characterized in that: A height sensor is arranged on the opposite side of the material receiving belt, and the height sensor is used to monitor the height of the material boxes stacked on the material receiving belt.

6. A labeling method for an automatic labeling machine, characterized in that: The labeling method is applied to any one of the automatic labeling machines in claims 1-5, comprising: The position and direction of the material in the material box are adjusted by a material sorting mechanism, wherein the material sorting mechanism comprises a rotating component and a tilting component, the rotating component is used to adjust the direction of the material, and the tilting component is used to adjust the position of the material; The hard label is attached to the surface of the material by a labeling mechanism, wherein the labeling mechanism includes a label peeling component and a label suction component, the label peeling component is used to peel the hard label off the base paper, and the hard label is on the base paper; the label suction component is used to suck the hard label peeled off from the label peeling component off the base paper and then attach the hard label to the material; Transferring the material box from the labeling mechanism to the unloading mechanism through a grabbing plate assembly; The material box is discharged from the automatic labeling machine through the unloading mechanism.

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