Paper breaking detection device in anti-counterfeit label production process

Abstract

The invention provides a broken paper detection device in the anti-counterfeit label production process, and belongs to the technical field of label production, the broken paper detection device comprises a mounting plate and a stand column, the stand column is connected with a motor, a lifting block and a threaded rod, the lifting block is connected with a fixing rod, and the device further comprises a label detection assembly used for detecting whether a label is broken or not; the balance assembly is used for supporting the label detection assembly; the pressure detection assembly is used for detecting the tension of the label; the device has the beneficial effects that the numerical value of the pressure sensor is changed through the change of tension so as to realize early warning of label breakage, meanwhile, an alarm is given to remind related personnel to process, and the magnetic field of the original induction coil is changed through the movement of the induction column in the fixed cylinder so as to realize accurate detection; according to the detection device, interference of dust or illumination can be avoided during detection, the detection accuracy is guaranteed, meanwhile, early warning can be achieved in advance, and the machining efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of label manufacturing technology, and more specifically, to a paper breakage detection device in the production process of anti-counterfeiting labels. Background Technology

[0002] The labels used in the printing industry are mostly printed materials used to identify relevant information about products, and most of them have adhesive backing. However, some labels are printed without adhesive and can still be called labels. Labels with adhesive are commonly known as "self-adhesive labels." Regarding labels after instrument calibration, these are nationally standardized labels that clearly explain the details of the instrument's calibration. Physical labels are brief signs used to indicate the name, weight, volume, and purpose of an item. There are traditional printed labels and modern barcode printed labels. The widespread use of labels and the continuous development of label varieties have naturally driven the development of label printing technology.

[0003] During label production, real-time detection of label paper breakage is crucial to minimize impacts on product quality and equipment safety. Current methods primarily rely on sensors for this purpose; however, environmental factors such as dust and lighting can affect the performance of breakage detection devices. For instance, dust accumulation on the sensor surface can obstruct light or impair its sensing function, leading to inaccurate detection signals. Changes in light intensity can interfere with the normal operation of optical detection devices, reducing reliability. Furthermore, tension variations during label transport can also cause breakages, but early warning systems are often inadequate for accurately predicting these changes, increasing the likelihood of breakages, production interruptions, maintenance time, and reduced efficiency. Therefore, developing a breakage detection device for anti-counterfeiting label production to address these issues has become a pressing problem for those skilled in the art. Summary of the Invention

[0004] To overcome the above shortcomings, this invention provides a paper breakage detection device in the production process of anti-counterfeiting labels. It aims to solve the problem that factors such as dust or light in the production environment may affect the performance of the paper breakage detection device and that it cannot provide early warning based on changes in tension, thus reducing production efficiency.

[0005] This invention is implemented as follows: This invention provides a paper breakage detection device during the production of anti-counterfeiting labels, comprising a mounting plate and a column, wherein the column is connected to a motor, a lifting block, and a threaded rod, and the lifting block is connected to a fixing rod, and further comprising: A label detection component is located on one side of the column and is used to detect whether a label is broken. A balancing assembly, which is connected to a fixed rod, is used to support the label detection assembly; A pressure detection component, which is connected to a fixed rod, is used to detect the tension of the label.

[0006] Preferably, the mounting plate is fixedly connected to the column, the side wall of the column is provided with a limiting groove, one end of the limiting groove is provided with a placement groove, the inner wall of the limiting groove is slidably connected to the lifting block, and the end of the column away from the mounting plate is fixedly connected to the motor.

[0007] Preferably, the threaded rod is located inside the limiting slide groove, one end of the threaded rod is rotatably connected to the inner wall of the placement groove, the other end of the threaded rod is fixedly connected to the motor, a buffer spring is sleeved on the outer side of the threaded rod, the threaded rod is threadedly connected to the lifting block, and the two ends of the buffer spring are respectively fixedly connected to the side wall of the lifting block and the inner wall of the placement groove away from the motor.

[0008] Preferably, one end of the fixed rod is fixedly connected to the lifting block, the outer wall of the fixed rod is provided with an installation groove, and an alarm is fixedly connected to the outer wall of the fixed rod.

[0009] Preferably, the balancing assembly includes a rotating column located inside the mounting groove. Rotating rods are fixedly connected to both ends of the rotating column and are rotatably connected to the inner wall of the mounting groove. A torsion spring is sleeved on the outer wall of the rotating rod, and both ends of the torsion spring are fixedly connected to the side wall of the rotating column and the inner wall of the mounting groove, respectively. An extension plate is fixedly connected to the outer wall of the rotating column, and two extension plates are provided, which are symmetrically distributed about the center line of the rotating column.

[0010] Preferably, the pressure detection assembly includes a pressure sensor and a limiting cylinder. The pressure sensor is located inside the limiting cylinder. Both the pressure sensor and the limiting cylinder are fixedly connected to the inner wall of the mounting groove. The limiting cylinder is provided with a telescopic spring and a movable block inside.

[0011] Preferably, the movable block is slidably connected to the inner wall of the limiting cylinder, one end of the movable block is fixedly connected to a pressing block, the second telescopic spring is located outside the pressure sensor and the pressing block, the two ends of the second telescopic spring are fixedly connected to the inner wall of the mounting groove and the side wall of the movable block respectively, the movable block is arranged in a "T" shape, and the movable block is located above one of the extension plates.

[0012] Preferably, the label detection component includes a support plate, which is fixedly connected to the end of the extension plate away from the rotating column. The side wall of the support plate is fixedly connected, and a groove is formed in the side wall of the support plate. A fixing plate is fixedly connected to the inner wall of the groove. The side wall of the fixing plate is formed with two sets of linearly arrayed through holes, and the two sets of through holes are staggered.

[0013] Preferably, each of the through holes has a movable cylinder on one side, and fixed cylinders are fixedly connected to both ends of the movable cylinder. One of the fixed cylinders is fixedly connected to a fixed plate. An induction coil is fixedly connected to the inner wall of the movable cylinder, and a detection rod is provided inside the movable cylinder.

[0014] Preferably, a protrusion is fixedly connected to one end of the detection rod, a probe is rotatably connected to the protrusion, a sensing column is fixedly connected to the outer wall of the detection rod, a limit block is fixedly connected to the other end of the detection rod, a telescopic spring is fixedly connected to the side wall of the limit block, and the end of the telescopic spring away from the limit block passes through the through hole and is fixedly connected to the inner wall of the groove.

[0015] The beneficial effects of this invention are: 1. During detection, the mutual compression between the label and the label detection component causes the extension plate to compress the movable block, compressing the telescopic spring. The compression block then compresses the pressure sensor. When the label tension is normal, the pressure sensor outputs a stable signal. When the label tension becomes abnormal, the label is in a taut state. At this point, depending on the label's conveying direction, the label detection component generates a component force on the extension plate, changing the compression of the movable block and the compression force on the pressure sensor. This causes a change in the pressure sensor reading, which is then transmitted to the control system for early warning. Simultaneously, the change in the pressure sensor reading triggers an alarm signal to alert relevant personnel for timely handling. This early warning system helps reduce or prevent subsequent paper breaks, ensuring label production quality.

[0016] 2. After the fixed rod position is adjusted and fixed, the label detection component can also be in the set position. At this time, the probe head is in contact with the label surface, and the interaction force between the probe head and the label can compress the telescopic spring a certain distance. When the label breaks, as the label is conveyed, the elasticity of the telescopic spring can change the detection height of the probe head, thereby driving the detection rod to move inside the movable cylinder and the fixed cylinder, thereby changing the position of the sensing column inside the fixed cylinder. When the sensing column moves inside the fixed cylinder, it can change the original magnetic field of the induction coil, thereby detecting the signal change and achieving accurate detection. By changing the magnitude of the force, the label can be detected. This not only avoids interference from dust or light during detection, but also ensures the accuracy of detection, and can also provide early warning, improving processing efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings 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 should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a paper breakage detection device in the production process of an anti-counterfeiting label provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the column of a paper breakage detection device in the production process of an anti-counterfeiting label provided by an embodiment of the present invention; Figure 3 This is a schematic diagram of the balance component and detection component of a paper breakage detection device in the production process of an anti-counterfeiting label, provided by an embodiment of the present invention. Figure 4 This invention provides a paper breakage detection device for the anti-counterfeiting label production process. Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the support plate structure of a paper breakage detection device in the production process of anti-counterfeiting labels provided by an embodiment of the present invention; Figure 6 This is a schematic diagram of the movable cylinder structure of a paper breakage detection device in the production process of anti-counterfeiting labels provided by an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of the movable cylinder of a paper breakage detection device in the production process of an anti-counterfeiting label, provided by an embodiment of the present invention. Figure 8This is a partial structural cross-sectional view of the support plate of a paper breakage detection device in the production process of an anti-counterfeiting label provided by an embodiment of the present invention; Figure 9 This is a partial structural cross-sectional view of the fixing rod of a paper breakage detection device in the production process of an anti-counterfeiting label provided by an embodiment of the present invention; Figure 10 This invention provides a paper breakage detection device for the anti-counterfeiting label production process. Figure 9 Enlarged schematic diagram of the structure at point B.

[0019] In the diagram: 1. Mounting plate; 2. Column; 3. Motor; 4. Limiting groove; 5. Lifting block; 6. Fixing rod; 61. Mounting slot; 7. Balancing assembly; 71. Rotating column; 72. Extension plate; 73. Rotating rod; 74. Torsion spring; 8. Alarm; 9. Tag detection assembly; 91. Support plate; 9101. Fixing plate; 92. Movable cylinder; 93. Fixing cylinder; 94. Detection rod; 95. Protrusion; 96. Probe; 97. Telescopic spring one; 98. Induction coil; 99. Induction column; 910. Limiting block; 911. Groove; 912. Through hole; 10. Buffer spring; 11. Threaded rod; 12. Placement slot; 13. Pressure detection assembly; 131. Squeezing block; 132. Pressure sensor; 133. Telescopic spring two; 134. Movable block; 135. Limiting cylinder. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example, refer to Figures 1-10 A paper breakage detection device for anti-counterfeiting label production process includes a mounting plate 1 and a column 2. The column 2 is connected to a motor 3, a lifting block 5, and a threaded rod 11. The lifting block 5 is connected to a fixing rod 6. The device also includes: Label detection component 9 is located on one side of column 2 and is used to detect whether the label is broken. The balancing component 7 is connected to the fixing rod 6 and is used to support the label detection component 9. Pressure detection component 13 is connected to fixed rod 6 and is used to detect the tension of the label.

[0022] Furthermore; the mounting plate 1 is fixedly connected to the column 2, the side wall of the column 2 is provided with a limiting groove 4, one end of the limiting groove 4 is provided with a placement groove 12, the inner wall of the limiting groove 4 is slidably connected to the lifting block 5, the end of the column 2 away from the mounting plate 1 is fixedly connected to the motor 3; the threaded rod 11 is located inside the limiting groove 4, one end of the threaded rod 11 is rotatably connected to the inner wall of the placement groove 12, the other end of the threaded rod 11 is fixedly connected to the motor 3, a buffer spring 10 is sleeved on the outside of the threaded rod 11, the threaded rod 11 is threadedly connected to the lifting block 5, and the two ends of the buffer spring 10 are fixedly connected to the side wall of the lifting block 5 and the inner wall of the placement groove 12 away from the motor 3, respectively.

[0023] It should be noted that: the mounting plate 1 is fixed in the appropriate position of the equipment by bolts, thereby completing the positioning of the column 2 and fixing the position of the label detection component 9 for subsequent detection. The motor 3 and other electrical equipment are connected to an external power source and powered by the power source. Before detection, the motor 3 can be started to drive the threaded rod 11 to rotate. Through the threaded connection between the threaded rod 11 and the lifting block 5, the lifting block 5 can drive the fixed rod 6 to move up and down, thereby adjusting the position of the balancing component 7 and the label detection component 9. This facilitates the adjustment and detection of labels of different thicknesses, increasing applicability. Furthermore, during the up and down movement of the lifting block 5, the buffer spring 10 can be stretched or compressed, and in conjunction with the limiting slide 4, the stability of the lifting block 5 during movement can be increased, avoiding shaking and improving the accuracy of subsequent detection.

[0024] Reference Figure 1 , Figure 3 , Figure 4 , Figure 9 and Figure 10Furthermore; the fixed rod 6 is fixedly connected to one end of the lifting block 5, the outer wall of the fixed rod 6 is provided with an installation groove 61, and an alarm 8 is fixedly connected to the outer wall of the fixed rod 6; the balance assembly 7 includes a rotating column 71, the rotating column 71 is located inside the installation groove 61, the two ends of the rotating column 71 are fixedly connected to rotating rods 73, the rotating rods 73 are rotatably connected to the inner wall of the installation groove 61, the outer wall of the rotating rods 73 is sleeved with torsion springs 74, the two ends of the torsion springs 74 are fixedly connected to the side wall of the rotating column 71 and the inner wall of the installation groove 61 respectively, the outer wall of the rotating column 71 is fixedly connected to an extension plate 72, there are two extension plates 72, the two extension plates 72 are symmetrically distributed about the center line of the rotating column 71; the pressure detection assembly 13 includes pressure Force sensor 132 and limiting cylinder 135 are provided. The pressure sensor 132 is located inside the limiting cylinder 135. Both the pressure sensor 132 and the limiting cylinder 135 are fixedly connected to the inner wall of the mounting groove 61. The limiting cylinder 135 is provided with a second telescopic spring 133 and a movable block 134. The movable block 134 is slidably connected to the inner wall of the limiting cylinder 135. One end of the movable block 134 is fixedly connected to a pressing block 131. The second telescopic spring 133 is located outside the pressure sensor 132 and the pressing block 131. Both ends of the second telescopic spring 133 are fixedly connected to the inner wall of the mounting groove 61 and the side wall of the movable block 134, respectively. The movable block 134 is T-shaped and located above one of the extension plates 72.

[0025] It should be noted that: In the initial state, the extension plate 72 is kept horizontal by the action of the torsion spring 74. After the height of the fixing rod 6 is adjusted, the mutual compression of the label and the label detection component 9, as well as the rotational connection between the rotating rod 73 and the mounting groove 61, can drive the extension plate 72 to compress the movable block 134, thereby compressing the telescopic spring 133. The compression block 131 then compresses the pressure sensor 132. The pressure sensor 132 is electrically connected to the alarm 8. During paper transmission, changes in tension may cause paper breakage. When the label tension is normal, the pressure sensor... The value of sensor 132 is in a relatively stable position, and the extension plate 72 maintains a certain contact with the moving block 134, thereby causing the pressure sensor 132 to output a stable signal. When the label tension becomes abnormal, it may indicate that the label is about to break or has already broken, and the label is in a taut state. When the label tension increases, it means that the internal tension is increasing. According to Newton's third law, forces act in pairs. In order to maintain its own motion and tension, the label will apply a tension force of equal magnitude and opposite direction to the object it contacts, namely the label detection component 9, to "resist". Factors that may change its tension are considered to maintain the balance of forces. At this time, according to the label conveying direction, the label detection component 9 can generate a component force on the extension plate 72, thereby changing the pressure of the extension plate 72 on the movable block 134, and thus changing the pressure of the pressing block 131 on the pressure sensor 132. This causes the value of the pressure sensor 132 to change, and transmits the electrical signal to the control system to realize the early warning of the label. At the same time, the change of the pressure sensor 132 value causes the alarm 8 to issue an alarm signal to remind relevant personnel to deal with it in time. The early warning process reduces or avoids subsequent paper breaks and ensures the production quality of the label.

[0026] Reference Figures 5-8Furthermore, the label detection component 9 includes a support plate 91, which is fixedly connected to the end of the extension plate 72 away from the rotating column 71. The sidewall of the support plate 91 is fixedly connected to the support plate 91, and a groove 911 is formed in the sidewall of the support plate 91. A fixing plate 9101 is fixedly connected to the inner wall of the groove 911. Two sets of linearly arrayed through holes 912 are formed in the sidewall of the fixing plate 9101, and the two sets of through holes 912 are staggered. A movable cylinder 92 is provided on one side of each through hole 912, and fixing cylinders 93 are fixedly connected to both ends of the movable cylinder 92. One of the fixing cylinders... 93 is fixedly connected to the fixed plate 9101. An induction coil 98 is fixedly connected to the inner wall of the movable cylinder 92. A detection rod 94 is provided inside the movable cylinder 92. A protrusion 95 is fixedly connected to one end of the detection rod 94. A probe head 96 is rotatably connected to the protrusion 95. An induction column 99 is fixedly connected to the outer wall of the detection rod 94. A limit block 910 is fixedly connected to the other end of the detection rod 94. A telescopic spring 97 is fixedly connected to the side wall of the limit block 910. The end of the telescopic spring 97 away from the limit block 910 passes through the through hole 912 and is fixedly connected to the inner wall of the groove 911.

[0027] It should be noted that after the fixed rod 6 is adjusted and fixed, the label detection component 9 can also be in the set position. At this time, the probe 96 is in contact with the label surface, and the interaction force between the probe 96 and the label can compress the telescopic spring 97 by a certain distance. The elastic coefficient of the telescopic spring 97 is less than that of the torsion spring 74. When the label breaks, as the label is conveyed, the elasticity of the telescopic spring 97 can cause the detection height of the probe 96 to change. The telescopic spring 97 moves up and down, which in turn drives the detection rod 94 to move inside the movable cylinder 92 and the fixed cylinder 93, thereby changing the position of the sensing column 99 inside the fixed cylinder 93. Before detection, the induction coil 98 can be energized and send a signal to the control system. A stable signal is generated when the sensing column 99 moves inside the fixed cylinder 93, causing a change in the original magnetic field of the induction coil 98. The sensing column 99 is made of ferromagnetic material, while the others are made of non-magnetic materials. This allows the sensing column 99 to work with the induction coil 98 to generate a magnetic field, enabling rapid and accurate detection of signal changes and achieving precise detection. In addition, a shielding layer can be coated on the outer walls of the movable cylinder 92 and the fixed cylinder 93 to avoid interference from external magnetic fields. Two sets of alternating and staggered probes 96 can detect the entire label surface. By varying the intensity of the pressure, the label can be detected. This not only avoids dust interference during detection but also ensures the accuracy of the detection and provides early warning, reducing subsequent damage.

[0028] It should be noted that the specific model and specifications of the motor and other components need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A paper breakage detection device for anti-counterfeiting label production process, comprising a mounting plate (1) and a column (2), wherein the column (2) is connected to a motor (3), a lifting block (5) and a threaded rod (11), and the lifting block (5) is connected to a fixing rod (6), characterized in that, Also includes: A label detection component (9) is located on one side of the column (2) and is used to detect whether the label is broken. A balancing component (7) is connected to a fixing rod (6) and is used to support the label detection component (9). Pressure detection component (13), which is connected to the fixing rod (6), is used to detect the tension of the label.

2. The paper breakage detection device in the production process of anti-counterfeiting labels according to claim 1, characterized in that, The mounting plate (1) is fixedly connected to the column (2). A limiting groove (4) is provided on the side wall of the column (2). A placement groove (12) is provided at one end of the limiting groove (4). The inner wall of the limiting groove (4) is slidably connected to the lifting block (5). The end of the column (2) away from the mounting plate (1) is fixedly connected to the motor (3).

3. The paper breakage detection device in the production process of anti-counterfeiting labels according to claim 2, characterized in that, The threaded rod (11) is located inside the limiting slide groove (4). One end of the threaded rod (11) is rotatably connected to the inner wall of the placement groove (12). The other end of the threaded rod (11) is fixedly connected to the motor (3). A buffer spring (10) is sleeved on the outside of the threaded rod (11). The threaded rod (11) is threadedly connected to the lifting block (5). The two ends of the buffer spring (10) are fixedly connected to the side wall of the lifting block (5) and the inner wall of the placement groove (12) away from the motor (3), respectively.

4. The paper breakage detection device in the production process of anti-counterfeiting labels according to claim 1, characterized in that, The fixed rod (6) is fixedly connected to one end of the lifting block (5), and the outer wall of the fixed rod (6) is provided with an installation groove (61). An alarm (8) is fixedly connected to the outer wall of the fixed rod (6).

5. The paper breakage detection device in the production process of anti-counterfeiting labels according to claim 4, characterized in that, The balancing assembly (7) includes a rotating column (71) located inside the mounting groove (61). Rotating rods (73) are fixedly connected to both ends of the rotating column (71). The rotating rods (73) are rotatably connected to the inner wall of the mounting groove (61). A torsion spring (74) is sleeved on the outer wall of the rotating rod (73). The two ends of the torsion spring (74) are fixedly connected to the side wall of the rotating column (71) and the inner wall of the mounting groove (61), respectively. An extension plate (72) is fixedly connected to the outer wall of the rotating column (71). There are two extension plates (72), and the two extension plates (72) are symmetrically distributed about the center line of the rotating column (71).

6. The paper breakage detection device in the production process of anti-counterfeiting labels according to claim 5, characterized in that, The pressure detection assembly (13) includes a pressure sensor (132) and a limiting cylinder (135). The pressure sensor (132) is located inside the limiting cylinder (135). Both the pressure sensor (132) and the limiting cylinder (135) are fixedly connected to the inner wall of the mounting groove (61). The limiting cylinder (135) is provided with a second telescopic spring (133) and a movable block (134).

7. The paper breakage detection device in the production process of anti-counterfeiting labels according to claim 6, characterized in that, The movable block (134) is slidably connected to the inner wall of the limiting cylinder (135). One end of the movable block (134) is fixedly connected to the squeezing block (131). The second telescopic spring (133) is located outside the pressure sensor (132) and the squeezing block (131). The two ends of the second telescopic spring (133) are fixedly connected to the inner wall of the mounting groove (61) and the side wall of the movable block (134), respectively. The movable block (134) is arranged in a "T" shape and is located above one of the extension plates (72).

8. The paper breakage detection device in the production process of anti-counterfeiting labels according to claim 5, characterized in that, The label detection component (9) includes a support plate (91), which is fixedly connected to the end of the extension plate (72) away from the rotating column (71). The side wall of the support plate (91) is fixedly connected, and a groove (911) is provided on the side wall of the support plate (91). A fixing plate (9101) is fixedly connected to the inner wall of the groove (911). The side wall of the fixing plate (9101) is provided with two sets of linearly arrayed through holes (912), and the two sets of through holes (912) are staggered.

9. A paper breakage detection device in the production process of anti-counterfeiting labels according to claim 8, characterized in that, Each of the through holes (912) has a movable cylinder (92) on one side, and fixed cylinders (93) are fixedly connected to both ends of the movable cylinder (92). One of the fixed cylinders (93) is fixedly connected to the fixed plate (9101). An induction coil (98) is fixedly connected to the inner wall of the movable cylinder (92), and a detection rod (94) is provided inside the movable cylinder (92).

10. A paper breakage detection device in the production process of an anti-counterfeiting label according to claim 9, characterized in that, One end of the detection rod (94) is fixedly connected to a protrusion (95), and the protrusion (95) is rotatably connected to a probe (96). The outer wall of the detection rod (94) is fixedly connected to a sensing column (99). The other end of the detection rod (94) is fixedly connected to a limiting block (910). The side wall of the limiting block (910) is fixedly connected to a telescopic spring (97). The end of the telescopic spring (97) away from the limiting block (910) passes through the through hole (912) and is fixedly connected to the inner wall of the groove (911).

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