Assembly for counting label sheets at high speed

Abstract

The present invention provides an assembly for counting label sheets at a high speed, wherein a predetermined number of labels attached to label sheets are counted at a high speed. The present invention comprises: a casing unit; an unwind wheel installed on the upper surface of the casing unit and configured to rotate by means of a first servo motor while a label sheet bobbin is seated thereon; a rewind wheel installed on the upper surface of the casing unit and configured to rotate by means of a second servo motor while an empty bobbin is seated thereon; a label sensor unit installed between the unwind wheel and the rewind wheel to count labels attached to the label sheets; a tension sensing unit installed between the label sensor unit and the unwind wheel so as to measure the tension of the transferred label sheets and to control the second servo motor such that the rotation of the rewind wheel is controlled; and a line speed sensing unit installed between the label sensor unit and the rewind wheel so as to measure the transfer speed of the transferred label sheets and to control the first servo motor such that the rotation of the unwind wheel is controlled.

Description

High-speed counting assembly for label paper

[0001] The present invention relates to a high-speed counting assembly for label paper, and more particularly, to a high-speed counting assembly for label paper for counting a fixed number of labels attached to label paper at high speed.

[0002] In general, packaging containers such as plastic bottles and glass bottles or medicines are distributed on the market with labels attached that indicate the brand, expiration date, ingredients, precautions for use, and directions for use.

[0003] Fig. 1 is an example of a packaging container with a conventional label attached. As shown in Fig. 1, a label (2) is attached in the form of a sticker to a packaging container (1) and distributed. A printed portion (2a) on which a product's trademark, information, and precautions are printed is formed on the surface of the label (2), and an adhesive (2b) is applied to the reverse side so that it can be attached to the surface of the packaging container (1).

[0004] In addition, by attaching the back side of the label (2) to the surface of the packaging container (1) using an adhesive (2b), the user can check the contents of the printed portion (2a) formed on the surface of the label (2). In Fig. 1, the drawing symbol '1a' is a cap.

[0005] Meanwhile, the conventional method of attaching labels to products involves workers manually peeling labels from the labeling paper and applying them to the product. This manual process requires workers to separate the labels from the paper and carefully position the adhesive side of the separated labels to ensure they are accurately positioned on the product.

[0006] Therefore, the process took a long time, as workers had to separate the label from the label sheet and check the position of the label and the product while attaching it. Furthermore, the adhesive surface of the label separated from the paper stuck to the worker's hands, making the attachment process difficult. Furthermore, defects frequently occurred, such as labels not being attached in the correct position or easily falling off due to air gaps between the label and the product.

[0007] To this end, automatic labeling devices have recently been proposed that separate labels from label paper while transporting products on a conveyor and attach the separated labels to the products.

[0008] Meanwhile, label paper, with multiple labels attached in a row, is provided in a wound reel form. Therefore, to improve productivity, an automatic label counting device is required to automatically count the number of labels attached to a single reel.

[0009] There are various automatic label counting devices on the market, but most of them are desktop counting devices or low-speed counting devices.

[0010] Therefore, the need for a high-speed counting device to quickly and accurately count a large number of labels for mass production is being raised.

[0011] <Prior Document 1>: Republic of Korea Patent Publication No. 10-2023-0063395 (Published: May 9, 2023)

[0012] The present invention was created to solve the above problems, and the purpose of the present invention is to provide an automatic label counting device that counts a set quantity of each label at high speed and distributes it to a production site, thereby facilitating the management of quantitative production.

[0013] According to one embodiment of the present invention for achieving the above object, a high-speed counting assembly for label paper is provided, comprising: a casing part; an unwind wheel installed on an upper surface of the casing part and rotated by a first servo motor, on which an empty bobbin is seated and rotated; a rewind wheel installed on an upper surface of the casing part and rotated by a second servo motor, on which a label bobbin is seated and rotated; a label sensor part installed between the unwind wheel and the rewind wheel to count labels attached to the label paper; a tension detection part installed between the label sensor part and the unwind wheel to measure tension of the conveyed label paper and control the rotation of the rewind wheel by controlling the second servo motor; and a line speed detection part installed between the label sensor part and the rewind wheel to measure a conveying speed of the conveyed label paper and control the rotation of the unwind wheel by controlling the first servo motor.

[0014] The label sensor unit may include a main body, an adjustment member capable of adjusting the height of the main body up and down, a sensing module installed on the adjustment member and sensing a label of the label paper passing through a detection slit, and a guide member installed on the adjustment member and guiding the label paper in a straight line.

[0015] The above tension detection unit may include a guide roller on which the label paper is wound and rotates, a connecting member on which the guide roller is installed, and a load cell that measures a load applied to the connecting member by the tension of the label paper wound around the guide roller and to which the connecting member is connected.

[0016] The above-mentioned speed detection unit may include a guide roller located at the upper portion of the casing portion and on which the label paper is wound and moved, a connecting post connected to the guide roller and mounted on the casing portion, and an encoder installed at the lower portion of the connecting post and detecting the rotational speed of the guide roller.

[0017] Either the unwind wheel or the rewind wheel may include a bearing roller part mounted on the casing part, and a chuck part installed on the upper part of the bearing roller part and fixed when the bobbin is seated, and the chuck part may be configured to expand when a knob installed on the upper part is rotated to fix the bobbin.

[0018] Additionally, the solutions to the aforementioned problems do not enumerate all features of the present invention. The various features of the present invention, along with their corresponding advantages and effects, can be understood in more detail by referring to the specific embodiments below.

[0019] According to the present invention, by controlling the tension and speed of the label paper being conveyed through a tension detection unit and a speed detection unit between the unwind wheel and the rewind wheel, it is possible to count the label paper at high speed while maintaining the rewind of the label paper in a tight state, thereby improving quality.

[0020] In addition, the functions of the unwind wheel and the rewind wheel can be performed cross-wise through cross-loop control without changing the positions of the tension detection unit and the speed detection unit, thereby improving versatility.

[0021] Figure 1 is an example of a packaging container with a conventional label attached.

[0022] Figure 2 is a front and side configuration diagram of a high-speed counting assembly of a label according to one embodiment of the present invention;

[0023] Figure 3 is a plan view of a high-speed counting assembly of a label according to one embodiment of the present invention;

[0024] FIG. 4 is a schematic diagram showing the main configuration of a high-speed counting assembly of a label according to one embodiment of the present invention.

[0025] FIG. 5 is a side view diagram showing the main configuration of a high-speed counting assembly of a label according to one embodiment of the present invention.

[0026] Figure 6 is a configuration diagram of a label sensor of a high-speed counting assembly of a label according to one embodiment of the present invention.

[0027] Figure 7 is a configuration diagram of a tension detection unit of a high-speed counting assembly of a label according to one embodiment of the present invention;

[0028] Figure 8 is a configuration diagram of a speed detection unit of a high-speed counting assembly of a label according to one embodiment of the present invention.

[0029] FIG. 9 is a configuration diagram of a bobbin shaft of a high-speed counting assembly of a label according to one embodiment of the present invention, and

[0030] FIG. 10 is a control block diagram for cross-loop control of a high-speed counting assembly of a label according to one embodiment of the present invention.

[0031] Hereinafter, the present invention will be described in more detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be interpreted as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concept of a term to best explain his or her invention, they should be interpreted with meanings and concepts consistent with the technical spirit of the present invention. Furthermore, unless otherwise defined, the technical and scientific terms used have the meanings commonly understood by those of ordinary skill in the art to which this invention pertains. In the following description and the attached drawings, descriptions of well-known functions and configurations that may unnecessarily obscure the gist of the present invention are omitted. The attached drawings are provided as examples to ensure that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. Furthermore, like reference numerals designate like elements throughout the specification. It should be noted that like reference numerals are used throughout the drawings to indicate like elements wherever possible.

[0032] Referring to FIG. 2, the high-speed counting assembly of the label of the present invention includes a casing portion (50), a first bobbin shaft (20), a second bobbin shaft (30), a first bearing roller portion (51), and a second bearing roller portion (52), and a first servo motor (M1) and a second servo motor (M2) are provided to drive the first bobbin shaft (20) and the second bobbin shaft (30), respectively.

[0033] Meanwhile, the first bobbin shaft (20) is rotated by the first servo motor (M1) on the upper surface of the casing portion (50), and an unwind wheel (21) is installed on which an empty bobbin is mounted and rotates.

[0034] The second bobbin shaft (30) is installed on the upper surface of the casing portion (50) and rotates by the second servo motor (M2), and a rewind wheel (21) is installed on which a label bobbin is seated and rotates. Here, (21) is installed. Here, the unwind wheel (21) and the rewind wheel (21) are only functionally distinguished and can be arranged to cross each other, and accordingly, the mounting positions of the empty bobbin and the label bobbin are not limited to the above-described description and can of course be arranged to cross each other.

[0035] Meanwhile, a label sensor unit (80) is installed between the unwind wheel (21) and the rewind wheel (21). Here, the label sensor unit (80) counts labels attached to the moving label paper. Information on the number of labels counted by the label sensor unit (80) can be displayed to the operator through the display unit (10) as shown in FIG. 2. In addition, information on the number of counted labels can be output in the form of an attachable label through the printer unit (P) and attached to the rewind bobbin on which the counting work has been completed. Here, the display unit (10) can display a rotation speed designation menu, a feedback control value, a number of labels processed per minute, the total length of the label roll, the operation status, etc. In addition, a small thermal printer that prints the name of the label, the number of label counts, the length of the label paper, etc. can be applied to the printer unit (P).

[0036] In the high-speed counting assembly of the label paper of the present invention, a tension detection unit (70) is installed between the label sensor unit (80) and the unwind wheel (21). Here, the tension detection unit (70) measures the tension of the label paper (L) and controls the rotation of the rewind wheel (31) by controlling the second servo motor (M2).

[0037] Next, a speed detection unit (90) is installed between the label sensor unit (80) and the rewind wheel (31). Here, the speed detection unit (80) measures the transport speed of the label paper (L) and controls the first servo motor (M1) to control the rotation of the unwind wheel (21).

[0038] That is, the speed detection unit (90) detects the speed of the conveying line of the label paper (L) and controls the first servo motor (M1) by feedback, so that when the label paper (L) is rewinded to an empty bobbin after counting, it is wound more tightly, thereby reducing the volume and improving the production quality.

[0039] In addition, the tension detection unit (70) senses the tension when transporting the label paper (L) to prevent problems such as excessively high tension being applied to the label paper (L) and cutting, and to allow the label paper (L) to be transported at high speed by applying an appropriate tension to the label paper (L) (for example, the linear speed of the label paper is approximately 10 m / min to a maximum of 240 m / min).

[0040] In other words, when the label paper is transported to a bobbin on which the label paper is wound and then wound on an empty bobbin, the linear speed of the label paper is feedback-controlled according to the change in the diameter of the bobbin roll (the change in the diameter of the label roll as the label paper is transported from the winding roll to the empty roll), thereby ensuring stability at high speeds.

[0041] Specifically, referring to FIG. 6, the label sensor unit (80) includes a main body (80a) installed on a casing (50), an adjustment stand (86) whose height can be adjusted up and down on the main body (80a), a sensing module (81) installed on the adjustment stand (86) and sensing a label of a label paper (L) passing through a detection slit (83), and a guide member (89; see FIG. 4) installed on the adjustment stand (86) and guiding the label paper (L) in a straight line. Specifically, the sensing module (81) can be adjusted to an optimal height by manually rotating an adjustment knob (82) on the main body (80a) to adjust the height of the adjustment stand (86). In addition, it is preferable that the sensing module (81) employ a sensor capable of high-speed counting and detecting transparent and opaque labels.

[0042] Referring to Fig. 7, the tension detection unit (70) is composed of a guide roller (71) on which a label (L) is wound and rotates, a connecting member (72) on which the guide roller (71) is installed, and a load cell (73) that measures a load applied to the connecting member (72) due to the tension of the label (L) wound around the guide roller and to which the connecting member (72) is connected. Here, an auxiliary wheel (W2) is mounted around the tension detection unit (70) and is connected so that the label (L) is transported via the auxiliary wheel (W2), so that the tension of the transported label (L) can be appropriately adjusted and maintained through torque control.

[0043] Referring to FIG. 8, the speed detection unit (90) may include a guide roller (91) located at the upper portion of the casing portion (50) and on which the label paper (L) is wound and moved, a connecting post (92) connected to the guide roller (91) and mounted on the casing portion (50), and an encoder (93) installed at the lower portion of the connecting post (92) to detect the rotational speed of the guide roller (91). Here, an auxiliary wheel (W2) is installed around the speed detection unit (90) so that the label paper (L) is connected to the speed detection unit (90) via the auxiliary wheel (W2). Accordingly, by feedback controlling the conveying speed of the label paper (L) conveyed through the speed detection unit (90), appropriate rewinding can be performed in accordance with changes in the diameter of the label paper roll.

[0044] Referring to Fig. 9, the unwind wheel (21) and the rewind wheel (31) are composed of a bearing roller part (51) mounted on a casing part (50), and a chuck part (25) installed on the upper part of the bearing roller part (51) and fixed when the bobbin is seated. Here, the chuck part (25) is provided so that when the knob (21) installed on the upper part is rotated, a cam protrudes to the outer circumference, allowing the bobbin to be easily fixed.

[0045] The high-speed counting assembly of the label paper of the present invention configured as described above controls the tension and speed of the label paper (L) being conveyed between the unwind wheel (21) and the rewind wheel (31) through the tension detection unit (70) and the speed detection unit (90), thereby enabling high-speed counting of the label paper while maintaining the rewind of the label paper in a tight state, thereby improving quality.

[0046] In addition, as shown in Fig. 10, the functions of the unwind wheel (21) and the rewind wheel (31) can be performed in a cross-loop manner through cross-loop control, so that it can be applied universally in various environments.

[0047] Although the present invention has been illustrated and described above with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and those skilled in the art to which the present invention pertains can make various modifications and implement the present invention without departing from the gist of the technical idea of ​​the present invention described in the claims below.

Claims

1. Casing section; An unwind wheel installed on the upper surface of the casing portion and rotated by a first servo motor, on which an empty bobbin is installed and rotates; A rewind wheel installed on the upper surface of the above casing portion and rotated by a second servo motor, on which a label bobbin is mounted and rotates; A label sensor unit installed between the unwind wheel and the rewind wheel and counting labels attached to the label paper; A tension detection unit installed between the label sensor unit and the unwind wheel to measure the tension of the label paper being transported and control the rotation of the rewind wheel by controlling the second servo motor; and A high-speed counting assembly for label paper, comprising a speed detection unit installed between the label sensor unit and the rewind wheel to measure the conveying speed of the label paper being conveyed and control the rotation of the unwind wheel by controlling the first servo motor.

2. In paragraph 1, The above label sensor part, entity, An adjustment stand that can be adjusted up and down in height from the above main body, A sensing module installed on the above control panel and sensing the label of the label paper passing through the detection slit, and A high-speed counting assembly for labels, comprising a guide member installed on the above control stand and guiding the labels in a straight line.

3. In paragraph 1, The above tension sensing unit, A guide roller that rotates while wrapping the above label paper, A connecting member with the above guide roller installed, and A high-speed counting assembly for label paper, comprising a load cell that measures a load applied to the connecting rod by the tension of the label paper wound around the guide roller and connected to the connecting rod.

4. In paragraph 1, The above speed detection unit, A guide roller located at the upper part of the above casing section and through which the label paper is wound and moved, A connecting post to which the above guide roller is connected and mounted on the casing, and A high-speed counting assembly for a label sheet, comprising an encoder installed at the lower portion of the above connecting post and detecting the rotation speed of the above guide roller.

5. In any one of paragraphs 1 to 4, Either the unwind wheel or the rewind wheel, A bearing roller part mounted on the above casing part, and It includes a chuck member that is installed on the upper part of the bearing roller part and fixes the bobbin when it is seated. A high-speed counting assembly for label paper, characterized in that the chuck member is expanded by a cam when the knob installed on the top is rotated to fix the bobbin.

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