A labelling device

Abstract

This utility model relates to a labeling device, including a labeling table for fixing a paper roll, a label dispenser for horizontally dispensing labels from its dispensing port to a labeling head, and a labeling head for vacuum-fetching labels from the label dispenser and applying them to the paper roll. The labeling table has a paper roll fixing structure and also includes a robotic arm for moving the labeling head outside the dispensing port to vacuum-fetch labels, moving the labeling head with the labels above the paper roll, and lowering it to apply the labels to the paper roll. The labeling head includes a fixing frame, a linear guide rail, a vacuum plate for upward suction or downward blowing, and a limiting pin. This utility model expands the application range, improves the bonding accuracy, prevents label wrinkles, bubbles, and product damage, and is suitable for automated labeling of various product specifications.

Description

Technical Field

[0001] This utility model belongs to the field of label pasting technology, and in particular relates to a label pasting device. Background Technology

[0002] In the fields of industrial production and logistics packaging, labeling devices, as key equipment for automating product identification, are widely used in the surface labeling process of products such as paper rolls and roll materials. Currently, these devices suffer from the following technical shortcomings:

[0003] 1. Poor adaptability: Most labeling devices on the market are suitable for small-sized products of the same specifications and cannot be flexibly adjusted according to the height of the product. For large products whose height exceeds the travel of the labeling head, the labeling operation cannot even be completed, and manual assistance is required, which increases labor costs and operational errors.

[0004] 2. Insufficient bonding precision: The top of the paper roll has a natural curved surface due to the winding process. Traditional devices directly and rigidly press the label after vacuum adsorption, which can easily lead to the following problems: ① Uneven force between the center and edge of the label, resulting in wrinkles or air bubbles; ② Gaps exist between the edge of the label and the curved surface, causing the label to lift or fall off due to tension after pasting; ③ For kraft paper rolls with rough surfaces, insufficient vacuum adsorption force can easily cause the label to shift. Utility Model Content

[0005] Based on this, a labeling device is provided to address the aforementioned technical problems.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A labeling device includes a labeling table for fixing a paper roll, a label dispenser for horizontally dispensing labels from its label outlet to a labeling head, and a labeling head for vacuum-picking labels from the label dispenser and affixing them to the paper roll. The labeling table has a paper roll fixing structure. The device is characterized by further including a robotic arm for moving the labeling head to the outside of the label outlet to vacuum-pick up the label, moving the labeling head with the label to above the paper roll, and lowering it to affix the label to the paper roll.

[0008] The labeling head includes a fixed frame, a linear guide rail, a vacuum plate for upward air intake or downward air blowing, and a limiting pin. The fixed frame is fixed to the robotic arm and has a slide and a horizontal fixed plate. A vertical guide post is fixed to the lower surface of the fixed plate, and a magnet is provided at the lower part of the guide post. The linear guide rail is fixed to the upper surface of the vacuum plate and slides vertically with the slide. A sleeve is provided on the upper surface of the vacuum plate, and the sleeve is fitted over the guide post. A magnetic switch is provided at the lower part of the sleeve. The side of the sleeve has a vertical limiting hole, and the limiting pin passes through the limiting hole and is fixed to the lower part of the guide post. A spring fitted over the guide post is provided between the sleeve and the fixed plate.

[0009] The beneficial effects of this utility model are as follows:

[0010] 1. The labeling head is driven by a robotic arm to move in three-dimensional space. The labeling position can be adjusted in real time according to the actual height of the paper roll. It has a wide range of applications and solves the problem that existing labeling devices are only suitable for small-volume products.

[0011] 2. Significantly improved adhesion accuracy and stable label pasting quality:

[0012] For the curved surface at the top of the paper roll, this utility model improves the structure of the labeling head. Therefore, after the label is vacuum-adsorbed, it is not directly and rigidly pressed down. Instead, when it comes into contact with the paper roll, the spring transmits the buffering force through the sleeve to avoid label displacement caused by rigid impact. Through the induction of the magnetic switch and the magnet, the pressing stops when the spring is compressed to a certain extent, and air is blown down through the vacuum plate to "smooth" the edge of the label to the curved surface, avoiding wrinkles, bubbles, or lifting and falling off. At the same time, it can also prevent excessive pressing from damaging the product. Attached Figure Description

[0013] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0014] Figure 1 A three-dimensional structural diagram of a labeling device provided in an embodiment of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the labeling head according to an embodiment of the present utility model;

[0016] Figure 3 This is a front view of the labeling head according to an embodiment of the present invention;

[0017] Figure 4 for Figure 3 AA section view;

[0018] Figure 5 This is a three-dimensional structural diagram of the sleeve of the labeling head according to an embodiment of the present utility model. Detailed Implementation

[0019] The embodiments of this utility model will be described below with reference to the accompanying drawings. It should be noted that the embodiments described in this specification are not exhaustive and do not represent the only embodiments of this utility model. The following corresponding embodiments are only for clearly illustrating the utility model content of this patent and are not intended to limit its implementation. For those skilled in the art, different variations and modifications can be made based on the described embodiments. Any obvious variations or modifications that fall within the technical concept and utility model content of this utility model are also within the protection scope of this utility model.

[0020] like Figure 1 As shown in the figure, this utility model embodiment provides a labeling device, including a labeling table 1100, a label machine 1200, a robotic arm 1300, and a labeling head 1400.

[0021] The labeling table 1100 is used to fix the paper roll 2. It has a paper roll fixing structure. Specifically, the paper roll fixing structure consists of a constraint groove 1110 in the front-to-back direction and two baffles 1120 for constraining the paper roll 2 on the left and right sides. The above structure is an existing structure and will not be described in detail here.

[0022] The labeling station 1100 has a first support frame 1130 and a second support frame 1140, which are used to fix the robotic arm 1300 and the labeling machine 1200, respectively. The second support frame 1140 is located in front of the first support frame 1130 and is equipped with a foldable foot pedal 1141, which makes it convenient for staff to change the ribbon of the labeling machine 1200 and avoid using escalators to block the safety passage.

[0023] Specifically, the second support frame 1140 has two support legs 1142, and the foot pedal 1141 is hinged to the support legs 1142 through the hinge seat 1141a to realize the folding of the foot pedal 1141.

[0024] The label printer 1200 is a commercially available product. It is fixed on the second support frame 1140, with the label outlet located on the rear side and an air blowing port for upward air blowing below the label outlet.

[0025] The robotic arm 1300 is an industrial robot arm, which is fixed on the first support frame 1130.

[0026] like Figure 2 , Figure 4 and Figure 5 As shown, the labeling head 1400 includes a fixing frame 1410, a linear guide rail 1420, a vacuum plate 1430, a limit pin 1440, and a barcode scanner.

[0027] The mounting bracket 1410 is inverted L-shaped. Its horizontal plate is fixed to the robotic arm 1300 by bolts. The vertical plate has a slide 1411, a horizontal fixing plate 1412, and a horizontal mounting plate 1413. The lower surface of the fixing plate 1412 is fixed to the upper end of the guide post 1450 in the vertical direction by bolts. A magnet 1451 is fixed to the lower end face of the guide post 1450 by bolts. (See also...) Figure 4 .

[0028] The linear guide 1420 is fixed to the upper surface of the vacuum plate 1430 and slides up and down with the slide block 1411.

[0029] The upper surface of the vacuum plate 1430 is provided with a base 1431, a sleeve 1432 and an air connector 1433. The base 1431 and the sleeve 1432 are fixed to the vacuum plate 1430 by bolts.

[0030] The base 1431 is also fixed to the lower end of the linear guide 1420 by bolts, and the base 1431 is integrally connected with the sleeve 1432.

[0031] Sleeve 1432 is fitted over guide post 1450, such as Figure 2 , Figure 3 and Figure 5 As shown, its side has a groove 1432a in the vertical direction and a limiting hole 1432b in the vertical direction. A magnetic switch 1460 is installed in the lower section of the groove 1432a, that is, the magnetic switch 1460 is located in the lower part of the sleeve 1432. See Figure 4 The limiting pin 1440 passes through the limiting waist hole 1432b and is fixed to the lower part of the guide post 1450. A spring 1470 is provided between the sleeve 1432 and the fixing plate 1412 and is sleeved on the outside of the guide post 1450.

[0032] The vacuum plate 1430 has a vacuum chamber inside, and its lower surface has multiple air holes in the vertical direction that communicate with the vacuum chamber. The air connector 1433 is connected to the vacuum chamber and is used to connect external vacuum equipment and air blowing equipment through external pipelines.

[0033] The barcode scanner is mounted on mounting plate 1413.

[0034] The working principle of the labeling device in this embodiment of the invention is as follows:

[0035] Labeling: When labeling is required, the host computer sends a start labeling command to the PLC. The PLC controls the robotic arm 1300 to move the labeling head 1400 to the label dispensing port of the label dispenser 1200. Once in position, the arm opens the suction solenoid valve on the external pipeline of the labeling head 1400 to prepare to pick up the label, and simultaneously sends a positioning command back to the host computer. After receiving the positioning command, the host computer sends a label dispensing signal to the label dispenser 1200 and opens the valve of the air blowing port below the label dispensing port. After the label dispenser 1200 dispenses the label horizontally, the label is firmly adhered to the lower surface of the vacuum plate 1430 under the combined action of upward air blowing from the air blowing port and upward suction from the vacuum plate 1430. After a delay, the valve of the air blowing port is closed, and only the vacuum plate 1430 holds the label.

[0036] Labeling: The PLC-controlled robotic arm 1300 transports the labeling head 1400 carrying the label until it reaches directly above the paper roll 2. The robotic arm 1300 moves downward until the vacuum plate 1430 touches the top of the paper roll 2, causing the spring 1470 to compress. At the same time, the magnetic switch 1460 moves upward along the guide post 1450 with the sleeve 1432. When the spring 1470 is compressed to a certain extent, the magnetic switch 1460 just senses the magnet 1451. At this point, the robotic arm 1300 stops moving downward and closes the suction solenoid valve on the external pipeline of the labeling head 1400, while opening the blowing solenoid valve to blow air downward from the vacuum plate 1430, ensuring that the label completely covers the surface of the paper roll 2.

[0037] Inspection: After the delay, labeling is complete. The robotic arm 1300 moves to ensure the barcode scanner 1450 is directly above the label. The PLC controls the barcode scanner 1450 to scan the code. If the code on the label is scanned, the labeling task is complete. If not scanned, the labeling operation is repeated until completion or an alarm is triggered after a set number of scans.

[0038] As can be seen from the above, the beneficial effects of the labeling device provided by this utility model embodiment are as follows:

[0039] 1. The labeling head is driven by a robotic arm to move in three-dimensional space. The labeling position can be adjusted in real time according to the actual height of the paper roll. It has a wide range of applications and solves the problem that existing labeling devices are only suitable for small-volume products.

[0040] 2. Significantly improved adhesion accuracy and stable label pasting quality:

[0041] For the curved surface at the top of the paper roll, this utility model improves the structure of the labeling head. Therefore, after the label is vacuum-adsorbed, it is not directly and rigidly pressed down. Instead, when it comes into contact with the paper roll, the spring transmits the buffering force through the sleeve to avoid label displacement caused by rigid impact. Through the induction of the magnetic switch and the magnet, the pressing stops when the spring is compressed to a certain extent, and air is blown down through the vacuum plate to "smooth" the edge of the label to the curved surface, avoiding wrinkles, bubbles, or lifting and falling off. At the same time, it can also prevent excessive pressing from damaging the product.

[0042] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A labeling device, comprising a labeling table for fixing a paper roll, a label dispenser for horizontally dispensing labels from its dispensing port to a labeling head, and a labeling head for vacuum-fetching labels from the label dispenser and applying them to the paper roll, wherein the labeling table has a paper roll fixing structure, characterized in that, It also includes a robotic arm for moving the labeling head to vacuum-pick up a label outside the label outlet, moving the labeling head with the label to above the paper roll, and lowering it to apply the label to the paper roll; The labeling head includes a fixed frame, a linear guide rail, a vacuum plate for upward air intake or downward air blowing, and a limiting pin. The fixed frame is fixed to the robotic arm and has a slide and a horizontal fixed plate. A vertical guide post is fixed to the lower surface of the fixed plate, and a magnet is provided at the lower part of the guide post. The linear guide rail is fixed to the upper surface of the vacuum plate and slides vertically with the slide. A sleeve is provided on the upper surface of the vacuum plate, and the sleeve is fitted over the guide post. A magnetic switch is provided at the lower part of the sleeve. The side of the sleeve has a vertical limiting hole, and the limiting pin passes through the limiting hole and is fixed to the lower part of the guide post. A spring fitted over the guide post is provided between the sleeve and the fixed plate.

2. The labeling device according to claim 1, characterized in that, The mounting bracket also has a horizontal mounting plate on which a barcode scanner is mounted.

3. The labeling device according to claim 1, characterized in that, The fixing plate is fixed to the upper end of the guide column by bolts in the vertical direction.

4. A labeling device according to claim 1, characterized in that, The upper surface of the vacuum plate is provided with a base, and the lower end of the linear guide rail is fixed to the base by bolts.

5. A labeling device according to claim 1, characterized in that, The lower end face of the guide post is provided with a magnet.

6. A labeling device according to claim 1, characterized in that, The sleeve has grooves running vertically on its side, and the magnetic switch is located in the lower section of the grooves.

7. A labeling device according to any one of claims 1-6, characterized in that, The labeling platform also has a first support frame and a second support frame, and the robotic arm and the labeling machine are respectively fixed on the first support frame and the second support frame.

8. A labeling device according to claim 7, characterized in that, The second support frame is equipped with a foldable foot pedal.

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