Flexible label front and back sorting mechanism, label pressing device and label pressing method thereof

Abstract

The present invention relates to the technical field of label processing equipment, and discloses a flexible label front and back sorting mechanism, a label pressing device and a label pressing method thereof. The flexible label front and back sorting mechanism includes a material sorting turntable that can rotate around it. A vibrating feeding tray, a material sorting device and a conveying device are arranged outside the material sorting turntable. A visual recognition module for detecting the front and back of the label is arranged above the material sorting station, and a visual positioning module for detecting the position of the label is arranged above the discharging station; the material sorting device includes a material box that can be lifted longitudinally, and a material ramming driving structure is arranged on the box. The material ramming driving structure can control the labels in the material ramming cavity to perform flipping and / or displacement activities. The present invention provides a flexible label front and back sorting mechanism, a label pressing device and a label pressing method thereof, which are beneficial to solving the problem that at present, labels with a thin sheet structure need to be manually sorted for the front and back, which is time-consuming and laborious and easily causes label structure defects.

Description

Technical Field

[0001] The present invention relates to the technical field of label processing equipment, and particularly to a flexible label front and back sorting mechanism, a label pressing device and a label pressing method thereof. Background Art

[0002] Manufacturers of shoes, clothing and other finished fabrics are accustomed to attaching one or more labels to products to display multiple information items, such as item size, fiber composition, care instructions, and the name and trademark of the manufacturer. Among them, thermal transfer labels are widely used. Such labels are cut into individual thin slices, namely flexible labels, during production and processing, and have front and back sides. Patterns are printed on the front side. Since the cut pieces are often collected in boxes or bags after being processed by a cutting machine, the postures of the labels are disorderly. Currently, it mainly relies on a dedicated position for manual sorting. The front and back sides of the labels are sorted out and then wound into bundles according to a specific quantity. First of all, the winding is often achieved by using rubber bands. This elastic bundling will cause the labels to deform after a period of time, affecting the subsequent thermal transfer quality. Secondly, manual sorting is relatively basic repetitive labor. Although the technical requirements are not high, it is time-consuming and laborious. After long-term work, human errors are likely to occur, such as some labels being mixed with the front and back sides, or the labels being stacked irregularly causing wrinkles, etc.

[0003] Therefore, how to design an automated device that can automatically sort the front and back sides of labels, press labels efficiently and avoid label structure defects has become an urgent technical problem to be solved currently. Summary of the Invention

[0004] The present invention provides a flexible label front and back sorting mechanism, a label pressing device and a label pressing method thereof, which are beneficial to solving the problem that the currently thin sheet-structured labels need to be manually sorted for the front and back sides, which is time-consuming and laborious and easily causes label structure defects.

[0005] The present invention is implemented as follows:

[0006] A flexible label front and back sorting mechanism includes a sorting turntable that can rotate step by step around its own axial center line. A number of sorting trays are arranged in central symmetry on the sorting turntable. A sunken groove for holding flexible labels is provided at the top of the sorting tray. After the sorting tray is shifted step by step, it at least constitutes a feeding station, a sorting station and a discharging station. A vibrating feeding tray for supplying flexible labels is arranged outside the feeding station. A sorting device for adjusting the front and back sides of the labels is arranged above the sorting station. A conveying device for outputting the labels is arranged outside the discharging station. A visual recognition module for detecting the front and back sides of the labels is arranged above the sorting station. A visual positioning module for detecting the position of the labels is arranged above the discharging station;

[0007] The material sorting device comprises a material box capable of longitudinal lifting and lowering, the material box can be lowered at a threshold position and is covered on the top of the material sorting tray, so that a pounding cavity is formed between the inner side of the material box and the material sorting tray, a transparent observation plate is provided on the top of the material box, the visual recognition module is located above the observation plate and can detect and identify the front and back conditions of the labels in the pounding cavity through the observation plate, and a pounding drive structure is provided on the material box, which can control the labels in the pounding cavity to flip and / or move;

[0008] The conveying device includes a transfer device capable of moving forward and backward, left and right, and up and down. The transfer device has a negative pressure suction cup, and the negative pressure suction cup can cooperate with the visual positioning module to transfer and output the target label on the discharge station.

[0009] On the basis of the above technical solution, a weighing hopper is provided at the output end of the vibrating feed tray, and the weighing hopper is provided with an opening and closing control structure, which can input labels of threshold weight into the material sorting tray at the feed station in batches.

[0010] Based on the above technical solution, the material sorting device includes a material sorting bracket, on which a lifting cylinder is provided, the telescopic rod of the lifting cylinder is transmission-connected to a vertically arranged pull rod, the bottom of the pull rod is connected to the material box, and the visual recognition module is arranged on the material sorting bracket.

[0011] On the basis of the above technical solution, a number of air holes are evenly distributed on the side walls of the material box, and the inner diameter of the air holes is smaller than the label outline; a blowing interface is provided on at least one side of the material box for connecting a pulse air pipe, and the blowing interface can perform pulse blowing toward the inner pounding cavity to constitute the pounding drive structure.

[0012] On the basis of the above technical solution, the pounding drive structure is a vibrator arranged on the material box.

[0013] Based on the above technical solution, the conveying device includes a plate chain conveyor line, on which a number of transfer tooling seats are arranged. The top of the transfer tooling seat is provided with a tooling groove for accommodating labels, and a negative pressure hole connected to the negative pressure mechanism is provided in the tooling groove.

[0014] A label pressing device includes the aforementioned flexible label front and back sorting mechanism, and also includes a label pressing device and a label pressing turntable located at the output end of the conveying device. A label pressing turntable capable of step-by-step rotation is provided on one side of the label pressing device. The flexible label front and back sorting mechanism, the label pressing device, and the label pressing turntable are arranged inside the frame. A number of label pressing station discs are symmetrically arranged at the center of the label pressing turntable. After the label pressing station discs rotate step by step, at least a label pressing station is formed. The label pressing device includes a punch module located directly above the label pressing station. The punch module is connected to a stamping cylinder. The working end of the punch module has a pressing plate for pressing the printing label carrier and a hot pressing punch for label pressing. The label pressing device also includes a rotary feeding structure located between the output end of the conveying device and the label pressing station.

[0015] On the basis of the above technical solution, a buffer seat and a negative pressure adsorption module are provided at the bottom of the label pressing station disc.

[0016] A label pressing method uses the aforementioned label pressing device and includes the following steps:

[0017] S1: Pour the flexible labels with disordered front and back sides into the vibrating feeding tray. The vibrating feeding tray conveys the flexible labels in batches according to the threshold weight portion to the sorting tray located at the feeding station. Then, this sorting tray enters the sorting station.

[0018] S2: The material box descends and abuts against the top of the sorting tray located at the sorting station to form a material ramming inner cavity. The visual recognition module detects the front and back sides of the labels below. When the number of front labels in the detection result is not less than the threshold amount, the material box ascends, and the sorting tray located at the sorting station enters the discharging station. When the number of front labels in the detection result is less than the threshold amount, the material ramming driving part structure is started to enable the labels in the material ramming inner cavity to flip and / or shift. The visual recognition module detects again, and the above process is repeated.

[0019] S3: The visual positioning module detects the positions of the front labels in the sorting tray located at the discharging station, generates an instruction after obtaining relevant data, and transports and outputs it through the conveying device. When the transfer of the front labels in this sorting tray is completed, the visual positioning module detects and calculates the number of labels in the sorting tray below. When the detection result is not less than the threshold amount, this sorting tray is directly transferred to the sorting station. When the detection result is less than the threshold amount, this sorting tray enters the feeding station, and labels are continuously input by the vibrating feeding tray and the weighing hopper, and then enter the sorting station for cyclic operation.

[0020] S4: The conveying device and the rotary feeding structure transfer the labels to the printing label carrier at the pressing plate station one by one.

[0021] S5: The punch module descends to complete hot stamping transfer printing.

[0022] S6: The labeling station plate rotates and outputs. The operator takes the materials and replenishes the label carriers onto the labeling station plate, and the operation is cycled.

[0023] Compared with the prior art, the present invention has at least the following advantages:

[0024] 1. High degree of automation: By integrating key components such as a vibrating feeding tray, a sorting turntable, a sorting device, a conveying device, and a labeling device, the whole process of label sorting to labeling is realized automatically, greatly reducing the labor cost and labor intensity.

[0025] 2. High sorting efficiency: By the synergistic effect of the vision recognition module and the ramming driving structure, the front and back sides of the labels can be quickly and accurately identified and adjusted to ensure that the quantity of the front labels meets the requirements of the subsequent labeling operation.

[0026] 3. High labeling accuracy: Through the combined action of the buffer seat and the negative pressure adsorption module, the displacement or deformation of the label carrier during the labeling process is effectively prevented, ensuring the labeling quality and the integrity of the label.

[0027] 4. Wide application range: The flexible label front and back sorting mechanism and the labeling equipment of the present invention are not only applicable to the footwear, clothing and finished fabric industries, but also can be widely applied to other fields that require thermal transfer labels, with high versatility and flexibility. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of the flexible label front and back sorting mechanism in an embodiment;

[0030] Figure 2 For Figure 1 the schematic diagram of the positional relationship among the sorting turntable, the vibrating feeding tray, the sorting device and the vision positioning system in;

[0031] Figure 3 For Figure 2 the three-dimensional structural diagram of the sorting device in;

[0032] Figure 4 For Figure 3 the cross-sectional view of;

[0033] Figure 5 For Figure 1 the schematic structural diagram of the conveying device in;

[0034] Figure 6 is Figure 5 a schematic structural view of the intermediate transfer tooling seat;

[0035] Figure 7 is a schematic structural view of the label pressing device in an embodiment;

[0036] Figure 8 is Figure 7 a top view of the internal structure of

[0037] Figure 9 is Figure 8 a three - dimensional structural view of the label pressing turntable and the label pressing device in

[0038] Figure 10 is Figure 9 a partial enlarged view of the punch module in

[0039] Labels in the figure: 1. Vibration feeding tray; 11. Weighing hopper; 2. Stock arranging turntable; 21. Stock arranging tray; 3. Stock arranging device; 31. Stock arranging bracket; 32. Lifting cylinder; 33. Pull rod; 34. Feed box; 35. Observation plate; 36. Blowing interface; 37. Buffer rod; 38. Stopper; 4. Vision detection system; 41. Vision recognition module; 42. Vision positioning module; 5. Conveying device; 51. Plate chain conveyor line; 52. Intermediate transfer tooling seat; 521. Tooling slot; 522. Negative pressure hole; 6. Transfer device; 61. Displacement module; 7. Label pressing device; 71. Label pressing bracket; 72. Rotating motor; 73. Rotating shaft; 74. Rotating arm; 75. Stamping cylinder; 76. Punch module; 761. Pressure plate; 762. Hot stamping punch; 77. Support rod; 78. Pneumatic slip ring; 8. Label pressing turntable; 81. Label pressing station disk; 82. Buffer seat; 9. Machine frame. Specific Embodiments

[0040] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0041] In the description of the present invention, 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. Thus, a feature defined as "first" or "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.

[0042] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to an element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0043] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Example 1: Combination Figures 1-6 The present embodiment discloses a flexible label front and back sorting mechanism, which aims to achieve efficient and accurate sorting of the front and back of labels and subsequent automated label pressing operations through mechanical automation means, thereby improving production efficiency, reducing labor costs, and ensuring the integrity and printing quality of the labels.

[0045] The flexible label front and back side sorting mechanism specifically includes a material sorting turntable 2 that can rotate step by step around its own axial center line. The bottom of the material sorting turntable 2 is connected to a stepping motor for transmission. Three material sorting trays 21 are centrally symmetrically arranged on the material sorting turntable 2. A sink for holding flexible labels is provided on the top of the material sorting tray 21. After stepping and shifting, the material sorting trays 21 constitute a feeding station, a material sorting station and a discharging station.

[0046] A vibrating feed tray 1 for supplying flexible labels is arranged outside the feeding station. To ensure that the number of labels input each time is appropriate, a weighing hopper 11 is also arranged at the output end of the vibrating feed tray 1, and labels of threshold weight are input in batches through an opening and closing control structure.

[0047] Above the material sorting station, there is a material sorting device 3 for adjusting the front and back sides of the labels, which is used to adjust the front and back sides of the labels. Specifically, the material sorting device 3 includes a material sorting bracket 31 for connecting an external carrier. The material sorting bracket 31 is a horizontal plate structure. Lifting cylinders 32 are arranged on the left and right sides of the material sorting bracket 31. The telescopic rods of the lifting cylinders 32 face vertically upward, and are connected by a connecting rod to two vertical pull rods 33 arranged front and back. There are a total of four pull rods 33 arranged symmetrically left and right. The bottom of the pull rods 33 is connected to a material box 34. The lifting cylinder can control the longitudinal lifting of the material box 34 to adjust the distance between the bottom of the material box 34 and the material sorting tray 21.

[0048] The material box 34 can move downward and cover the top of the material sorting tray 21 at the threshold position (i.e., the material sorting station), so as to form a material ramming inner cavity between the inner side of the material box 34 and the material sorting tray 21. There is an opening at the top of the material box 34, and a transparent observation plate 35 is arranged at the opening. The observation plate 35 is detachably connected to the top of the material box 34 by bolts. The visual recognition module 41 is located on the material sorting bracket 31 above the observation plate 35, and can detect and recognize the front and back conditions of the labels in the material ramming inner cavity through the observation plate 35. Specifically, it is to detect the number of internal labels in the front posture.

[0049] The material box 34 is provided with a material ramming driving structure, and the material ramming driving structure can control the labels in the material ramming inner cavity to perform flipping and / or displacement activities. Specifically, in combination with Figure 3 and Figure 4 , in this embodiment, a plurality of ventilation holes are evenly distributed on the side walls of the material box 34, and the inner diameter of the ventilation holes is smaller than the outline of the label. This structure not only ensures the air communication between the material ramming inner cavity and the external space but also prevents the labels from leaking out. Blowing interfaces 36 are arranged on the left and right sides of the material box 34 for connecting pulse air pipes. The blowing interfaces 36 can perform pulse blowing toward the inner material ramming inner cavity, constituting the material ramming driving structure. Among them, the position of the blowing interface 36 is close to the bottom of the material box 34, so that the blowing position is as close as possible to the bottom of the material sorting tray 21, in order to blow up more labels. After the labels are blown up, they will flip, which is beneficial to turning over the labels that were originally facing upward. After each blowing, the visual recognition module 41 will perform re-detection. After reaching the threshold condition, the material box 34 will separate from the material sorting tray 21. Among them, the visual recognition module 41 uses a CCD camera to collect images, and analyzes and recognizes the collected images through an image processing algorithm. It is an existing technology, and its specific structure and working principle will not be elaborated here. Those skilled in the art can select and implement from the existing technology according to the actual operation situation.

[0050] In other embodiments, the material ramming driving structure is a vibrator arranged on the material box 34, and the flipping operation of the labels in the material ramming inner cavity is realized by vibration; or an eddy current blowing device is adopted to increase the air flow rotation direction by means of spiral air outlet to improve the success rate of label flipping.

[0051] Further, a vertical buffer rod 37 is movably connected to the outer side wall of the bin 34. A stop block 38 is connected to the bottom of the buffer rod 37. A buffer spring (not shown in the figure) is provided between the stop block 38 and the bin 34. The buffer spring is sleeved on the buffer rod 37. Its function is to enable the stop block 38 to tightly abut against the lower material sorting tray 21 after descending, so as to ensure the closure of the bottom gap and prevent the internal labels from escaping.

[0052] A conveying device 5 for outputting labels is arranged outside the discharging station. A visual recognition module 41 for detecting the front and back sides of the labels is arranged above the material sorting station. A visual positioning module 42 for detecting the position of the labels is arranged above the discharging station; the conveying device 5 includes a negative pressure suction cup capable of moving forward and backward, left and right, and up and down. The negative pressure suction cup can cooperate with the visual positioning module 42 to transfer and transport the target labels at the discharging station. Among them, the visual positioning module 42 uses a CCD camera to collect images and analyzes and identifies the collected images through an image processing algorithm. It is a prior art, and its specific structure and working principle will not be described in detail here. Those skilled in the art can select and implement from the prior art according to the actual operation situation. The visual recognition module 41 and the visual positioning module 42 in this embodiment form a visual detection system 4.

[0053] Specifically, in combination with Figure 5 and Figure 6 , the conveying device 5 includes a plate chain conveyor line 51. A plurality of transfer tooling seats 52 are arranged on the plate chain conveyor line 51. A tooling groove 521 for accommodating labels is arranged at the top of the transfer tooling seat 52. A negative pressure hole 522 connected to a negative pressure mechanism is arranged in the tooling groove 521. A transfer device 6 is arranged above the plate chain conveyor line 51. The transfer device 6 includes the negative pressure suction cup and further includes a displacement module 61 connected to the negative pressure suction cup. The slide rails for the displacement module 61 to move forward and backward, left and right, and up and down constitute a three-axis displacement mechanism. It is a prior art, and its specific structure and working principle will not be described in detail here. Those skilled in the art can select and implement from the prior art according to the actual operation situation.

[0054] Embodiment 2: In combination with Figures 7-10 , this embodiment discloses a label pressing device, which includes the flexible label front and back sorting mechanism in Embodiment 1, and further includes a label pressing device 7 and a label pressing turntable 8 located at the output end of the conveying device 5. A label pressing turntable 8 capable of stepwise rotation is arranged on one side of the label pressing device 7. The flexible label front and back sorting mechanism, the label pressing device 7 and the label pressing turntable 8 are arranged in a frame 9. A human-machine interaction module is further arranged on the frame 9, which specifically includes a display screen, a keyboard, a mouse and a device control panel.

[0055] There are 4 label pressing station discs 81 symmetrically arranged at the center of the label pressing turntable 8. After the label pressing station discs 81 rotate step by step, they at least form label pressing stations. The label pressing device 7 includes a label pressing support 71 for connecting to the frame 9. A rotating motor 72 is provided at the bottom of the label pressing support 71. The output end of the rotating motor 72 is connected to a vertical rotating shaft 73. The bottom of the rotating shaft 73 is connected to a horizontal rotating arm 74. Negative pressure suction cups (not shown in the figure) are connected to the front and rear ends of the rotating arm 74, which are used to transfer the labels on the transfer tooling seat 52 to the label printing carrier.

[0056] Furthermore, a punch module 76 is located directly above the label pressing station on the label pressing support 71. The punch module 76 is connected to a punching cylinder 75. The working end of the punch module 76 has a pressing plate 761 for pressing the label printing carrier and a hot pressing punch 762 for label pressing, which can perform hot stamping transfer on the label located below.

[0057] To improve the stability and accuracy of the label pressing operation, as Figure 9 shown, a buffer seat 82 and a negative pressure adsorption module are also provided at the bottom of the label pressing station disc 81. The label pressing station disc 81 is provided with ventilation holes, and a negative pressure pipeline is arranged at the bottom, which is connected to an external negative pressure mechanism. During operation, it is used to fix the label printing carrier to prevent it from shifting or deforming during the label pressing process.

[0058] A support rod 77 is also vertically connected to the front side of the label pressing support 71. The bottom of the support rod 77 is inserted into the axial center position of the label pressing turntable 8 and is connected to a pneumatic slip ring 78 for the installation transition of the air circuit.

[0059] Embodiment 3: This embodiment discloses a method for pressing labels. By using a label pressing device in Embodiment 2, the method includes the following steps: S1: Pour the flexible labels with disordered front and back sides into the vibrating feeding tray 1. The vibrating feeding tray 1 conveys the flexible labels in batches according to the threshold weight (taking 20g as a group, about 30 labels as an example) to the sorting tray 21 at the feeding station. Then, the sorting tray 21 enters the sorting station to complete automatic feeding; S2: The material box 34 descends to abut against the top of the sorting tray 21 at the sorting station to form a ramming cavity. The visual recognition module 41 detects the front and back sides of the labels below. When the number of front labels in the detection result is not less than the threshold amount (taking 10 as the threshold), the material box 34 ascends, and the sorting tray 21 at the sorting station enters the discharging station; when the number of front labels in the detection result is less than the threshold amount (taking 10 as the threshold), the ramming driving part structure is started to enable the labels in the ramming cavity to flip and / or shift. The visual recognition module 41 performs detection again, and the above process is repeated; S3: The visual positioning module 42 detects the positions of the front labels in the sorting tray 21 at the discharging station, generates an instruction after obtaining relevant data, and transports and outputs them by the conveying device 5; when the transfer of the front labels in the sorting tray 21 is completed, the visual positioning module 42 detects and calculates the number of labels in the lower sorting tray 21. When the detection result is not less than the threshold amount (taking 5 as the threshold), the sorting tray 21 is directly transferred to the sorting station; when the detection result is less than the threshold amount (taking 5 as the threshold), the sorting tray 21 enters the feeding station, and labels are continuously input by the vibrating feeding tray 1 and the weighing hopper 11, and then enter the sorting station for cyclic operation; S4: The conveying device 5 and the rotary feeding structure transfer the labels to the printing carrier at the platen 761 station one by one; S5: The punch module 76 descends to complete the hot stamping transfer; S6: The label pressing station tray 81 rotates and outputs. The operator takes the materials and replenishes the printing carrier to the label pressing station tray 81 for cyclic operation.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Flexible label front and back side sorting mechanism, characterized in that: The invention comprises a material sorting turntable (2) capable of stepwise rotation around its own axial center line, a plurality of material sorting disks (21) are centrally symmetrically arranged on the material sorting turntable (2), a sink for holding flexible labels is arranged on the top of the material sorting disk (21), and the material sorting disk (21) at least forms a feeding station, a material sorting station and a discharging station after stepwise displacement, a vibrating feeding disk (1) for supplying flexible labels is arranged outside the feeding station, a material sorting device (3) for adjusting the front and back sides of the labels is arranged above the material sorting station, a conveying device (5) for outputting the labels is arranged outside the discharging station, a visual recognition module (41) for detecting the front and back sides of the labels is arranged above the material sorting station, and a visual positioning module (42) for detecting the position of the labels is arranged above the discharging station; The material sorting device (3) comprises a material box (34) capable of being lifted and lowered longitudinally. The material box (34) can be lowered at a threshold position and covered on the top of the material sorting plate (21), so that a material pounding cavity is formed between the inner side of the material box (34) and the material sorting plate (21). A transparent observation plate (35) is provided on the top of the material box (34). The visual recognition module (41) is located above the observation plate (35) and can detect and identify the front and back conditions of the labels in the material pounding cavity through the observation plate (35). A material pounding drive structure is provided on the material box (34), and the material pounding drive structure can control the labels in the material pounding cavity to perform flipping and / or displacement activities. The conveying device (5) comprises a transfer device (6) capable of front-to-back, left-to-right, and up-and-down displacement, the transfer device (6) having a negative pressure suction cup, and the negative pressure suction cup can cooperate with the visual positioning module (42) to transfer and output the target label on the discharge station; The side wall of the material box (34) is evenly distributed with a plurality of air holes, the inner diameter of the air holes being smaller than the outline of the label; at least one side of the material box (34) is provided with an air blowing interface (36) for connecting a pulse air pipe, and the air blowing interface (36) is capable of performing pulse air blowing toward the inner pounding cavity, thereby forming the pounding drive structure.

2. The flexible label front and back sorting mechanism according to claim 1, characterized in that: The output end of the vibrating feed tray (1) is provided with a weighing hopper (11), and the weighing hopper (11) is provided with an opening and closing control structure, which can input labels of threshold weight into the material sorting tray (21) at the feed station in batches.

3. The flexible label front and back sorting mechanism according to claim 1, characterized in that: The material sorting device (3) comprises a material sorting bracket (31), a lifting cylinder (32) is arranged on the material sorting bracket (31), a telescopic rod of the lifting cylinder (32) is transmission-connected to a vertically arranged pull rod (33), the bottom of the pull rod (33) is connected to the material box (34), and the visual recognition module (41) is arranged on the material sorting bracket (31).

4. The flexible label front and back sorting mechanism according to claim 1, characterized in that: The conveying device (5) comprises a plate chain conveyor line (51), on which a plurality of transfer tooling seats (52) are arranged, and the top of the transfer tooling seat (52) is provided with a tooling slot (521) for accommodating labels, and a negative pressure hole (522) connected to a negative pressure mechanism is arranged in the tooling slot (521).

5. A labeling device, characterized in that: The flexible label front and back side sorting mechanism comprises the flexible label front and back side sorting mechanism as claimed in any one of claims 1 to 4, and further comprises a label pressing device (7) and a label pressing turntable (8) located at the output end of the conveying device (5), a label pressing turntable (8) capable of stepping and rotating is provided on one side of the label pressing device (7), and the flexible label front and back side sorting mechanism, the label pressing device (7) and the label pressing turntable (8) are arranged in a frame (9); a plurality of label pressing station disks (81) are centrally symmetrically arranged on the label pressing turntable (8), and the label pressing station disks (81) are provided on the label pressing turntable (8). The marking station disk (81) at least forms a marking station after step-by-step rotation. The marking device (7) comprises a punch die set (76) located directly above the marking station. The punch die set (76) is connected to a punching cylinder (75). The working end of the punch die set (76) comprises a pressing plate (761) for pressing a printed marking carrier and a hot pressing punch (762) for pressing the marking. The marking device (7) further comprises a rotating feeding structure located between the output end of the conveying device (5) and the marking station.

6. A pressure labeling device according to claim 5, characterized in that: A buffer seat (82) and a negative pressure adsorption module are provided at the bottom of the labeling station plate (81).

7. A pressure labeling method, using a pressure labeling device according to claim 5, characterized in that: The following steps are involved: S1: pouring the disordered flexible labels on the front and back sides into a vibrating feed tray (1), the vibrating feed tray (1) conveys the flexible labels in batches according to the threshold weight to a material sorting tray (21) located at the feed station, and the material sorting tray (21) then enters the material sorting station; S2: The material box (34) moves downward to abut against the top of the material sorting plate (21) located at the material sorting station to form a material pounding inner cavity, and the visual recognition module (41) detects the front and back sides of the labels below. When the number of front labels in the detection result is not less than the threshold value, the material box (34) moves upward, and the material sorting plate (21) located at the material sorting station enters the material discharging station; when the number of front labels in the detection result is less than the threshold value, the material pounding drive structure is started to flip and / or move the labels in the material pounding inner cavity, and the visual recognition module (41) performs detection again, and the above process is repeated; S3: The visual positioning module (42) detects the position of the front labels in the material sorting tray (21) located at the material discharging station, obtains relevant data, generates instructions, and outputs the labels through the conveying device (5); and when the front labels in the material sorting tray (21) are transported, the visual positioning module (42) detects and calculates the number of labels in the lower material sorting tray (21), and when the detection result is not less than the threshold value, the material sorting tray (21) is directly transferred to the material sorting station; when the detection result is less than the threshold value, the material sorting tray (21) enters the material feeding station, and the vibrating feeding tray (1) and the weighing hopper (11) continue to input labels, and then enters the material sorting station for cyclic operation; S4: The conveying device (5) and the rotating feeding structure transport the labels one by one to the printing carrier at the pressing plate (761) station; S5: The punch die set (76) moves downward to complete the hot pressing transfer; S6: The label pressing station disc (81) rotates and outputs, and the operator takes the material and replenishes the label printing carrier to the label pressing station disc (81), and the operation is cyclical.

Images