A printing tension control mechanism for adhesive label

Abstract

The utility model relates to the technical field of label printing, especially a kind of not dry adhesive label printing tension control mechanism, it not only can the conveying direction of label be detected and corrected, avoid label printing process deviation, and by setting buffer mechanism, avoid in the process of adjusting label tension causing label tear;Including winding mechanism;Still including synchronous mechanism, buffer mechanism, drive mechanism, adjusting mechanism and deviation rectifying mechanism, synchronous mechanism is installed on winding mechanism and improves the synchronism of winding and unwinding, buffer mechanism is installed on synchronous mechanism and facilitates the tension in the process of buffering label adjustment, drive mechanism is installed on winding mechanism and drives adjusting mechanism to go up and down, adjusting mechanism is installed on winding mechanism and controls the adjustment label tension, deviation rectifying mechanism is installed on winding mechanism and rectifies label.

Description

Technical Field

[0001] This utility model relates to the technical field of label printing, and in particular to a tension control mechanism for self-adhesive label printing. Background Technology

[0002] Self-adhesive labels are labels that can be pasted onto the surface of various materials without the use of glue. They are usually made of materials such as polyethylene, polypropylene, and polyester, and have properties such as waterproof, wear-resistant, and high-temperature resistant.

[0003] Existing tension control mechanisms for self-adhesive label printing, such as the constant tension unwinding device for a self-adhesive label printing machine disclosed in utility model patent application number 202420774286.8, mainly include a base plate and a support frame mounted on the base plate, as well as a roller shaft mounted on the support frame. The roller shaft is equipped with a tensioning mechanism for quickly adjusting its thickness. In use, by adjusting the thickness of the roller, the roll material is kept under appropriate tension during the printing process, thereby ensuring the quality and accuracy of label printing. Rolls of different materials may require different tensions during printing, and by adjusting the thickness of the roller, the printing needs of various materials can be met.

[0004] However, most existing tension control mechanisms cannot detect and correct misaligned labels, which affects printing accuracy. Moreover, the tension adjustment lacks a buffer zone, making it easy to over-adjust and cause the label to tear. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a self-adhesive label printing tension control mechanism that can not only detect and correct the label conveying direction to avoid deviation during label printing, but also prevent label tearing during the adjustment of label tension by setting a buffer mechanism.

[0006] This utility model discloses a tension control mechanism for self-adhesive label printing, including a winding mechanism; it also includes a synchronization mechanism, a buffer mechanism, a drive mechanism, an adjustment mechanism, and a correction mechanism. The synchronization mechanism is installed on the winding mechanism to improve the synchronicity of winding and unwinding; the buffer mechanism is installed on the synchronization mechanism to facilitate buffering the tension during label adjustment; the drive mechanism is installed on the winding mechanism to drive the adjustment mechanism to rise and fall; the adjustment mechanism is installed on the winding mechanism to control and adjust the label tension; and the correction mechanism is installed on the winding mechanism to correct the label deviation. The winding mechanism and the synchronization mechanism rotate synchronously to facilitate printing of self-adhesive labels; the drive mechanism drives the adjustment mechanism to adjust the label tension; the buffer mechanism facilitates the buffering of label tension adjustment to avoid excessive adjustment causing label tearing; and the correction mechanism detects the label conveying direction and corrects it in time when the label deviates.

[0007] Preferably, the winding mechanism includes a worktable, a controller, a winding roller, and a top plate. The bottom end of the worktable is connected to the ground, the controller is installed on the worktable, the winding roller is installed on the worktable, and the bottom end of the top plate is connected to the top end of the worktable. The operator controls the winding speed of the winding roller through the controller, which facilitates the winding roller to wind up the printed self-adhesive labels. The top plate facilitates the installation of related printing equipment.

[0008] Preferably, the synchronization mechanism includes an unwinding roller, a first synchronization pulley, a second synchronization pulley, and a synchronization belt. The unwinding roller is mounted on the worktable, the first synchronization pulley is mounted on the unwinding roller, the second synchronization pulley is mounted on the take-up roller, and the synchronization belt drive is installed between the first synchronization pulley and the second synchronization pulley. The rotation of the unwinding roller releases the unprinted label. By setting the first synchronization pulley, the second synchronization pulley, and the synchronization belt, the synchronization between the unwinding roller and the take-up roller is improved, preventing the self-adhesive label from loosening or tearing.

[0009] Preferably, the buffer mechanism includes two sets of connecting shafts, two sets of springs, two sets of connecting plates, two sets of buffer rollers, and an angle sensor. Both sets of connecting shafts are rotatably mounted on the worktable, as are both sets of springs. The two sets of connecting plates are respectively mounted on the two sets of connecting shafts and connected to the two sets of springs. The two sets of buffer rollers are rotatably mounted between the two sets of connecting plates. The angle sensor is mounted on the worktable and is connected to the connecting shafts via a transmission connection. The label passes over the two sets of buffer rollers. When the adjusting mechanism adjusts the label tension, the label drives the two sets of connecting plates and the two sets of connecting shafts to rotate. The two sets of connecting shafts compress the two sets of springs, preventing the label from tearing due to excessive tension. The angle sensor detects the rotation angle of the connecting shafts and promptly feeds it back to the controller, facilitating the controller's control of the drive mechanism to adjust the tension.

[0010] Preferably, the drive mechanism includes two sets of brackets, a dual-head motor, two sets of drive shafts, and a first bevel gear. The bottom ends of the two sets of brackets are connected to the top end of the top plate, the bottom end of the dual-head motor is connected to the top end of the top plate, the two sets of drive shafts are rotatably mounted on the two sets of brackets respectively, and the two sets of first bevel gears are mounted on the two sets of drive shafts respectively. When it is necessary to adjust the label tension, the controller controls the start of the dual-head motor, the dual-head motor drives the two sets of drive shafts to rotate, and the two sets of drive shafts drive the two sets of first bevel gears to rotate.

[0011] Preferably, the adjusting mechanism includes two sets of lead screws, two sets of second bevel gears, two sets of sliders, and a tension roller. Two sets of limiting grooves are provided on the worktable. The two sets of lead screws are rotatably installed within the two sets of limiting grooves. The bottom ends of the two sets of second bevel gears are connected to the top ends of the two sets of lead screws, and the two sets of second bevel gears mesh with the two sets of first bevel gears. The two sets of sliders are slidably installed within the two sets of limiting grooves, and the tension roller is rotatably installed on the two sets of sliders. The two sets of first bevel gears drive the two sets of second bevel gears to rotate, which in turn drives the two sets of lead screws to rotate. The two sets of second bevel gears then drive the two sets of sliders and the tension roller to rise and fall, facilitating the adjustment of the label tension.

[0012] Preferably, the correction mechanism includes a photoelectric sensor, four sets of hydraulic cylinders, a tray, two sets of electric cylinders, and a clamping plate. The top of the photoelectric sensor is connected to the bottom of the top plate. The four sets of hydraulic cylinders are installed in pairs on the workbench. The tray is installed between the four sets of hydraulic cylinders. Both sets of electric cylinders are installed on the tray. The top of the clamping plate is connected to the bottom of the two sets of electric cylinders. The self-adhesive label passes between the tray and the clamping plate. The photoelectric sensor detects the conveying direction of the self-adhesive label. When a lateral deviation of the label is detected, the take-up roller and unwind roller are shut off by an electrical signal to stop the conveying. The two sets of electric cylinders push the clamping plate down to clamp the label. The two sets of hydraulic cylinders on the same side push the tray and the label to the middle position for correction.

[0013] Compared with the prior art, the advantages of this utility model are as follows: the winding mechanism and the synchronization mechanism rotate synchronously, which facilitates the printing of self-adhesive labels; the driving mechanism drives the adjustment mechanism to adjust the label tension; the buffer mechanism facilitates the adjustment and buffering of the label tension, avoiding excessive adjustment that could cause label tearing; and the correction mechanism detects the label conveying direction and corrects it in time when the label deviates. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is an isometric structural diagram of the winding mechanism of this utility model;

[0016] Figure 3 This is an isometric structural diagram of the synchronization mechanism and buffer mechanism of this utility model;

[0017] Figure 4 This is a cross-sectional isometric structural diagram of the drive mechanism and adjustment mechanism of this utility model;

[0018] Figure 5 This is a partially enlarged cross-sectional isometric structural diagram of the correction mechanism of this utility model.

[0019] The attached diagram is labeled as follows: 01, winding mechanism; 11, worktable; 12, controller; 13, winding roller; 14, top plate; 02, synchronization mechanism; 21, unwinding roller; 22, first synchronization pulley; 23, second synchronization pulley; 24, synchronization belt; 03, buffer mechanism; 31, connecting shaft; 32, spring; 33, connecting plate; 34, buffer roller; 35, angle sensor; 04, drive mechanism; 41, bracket; 42, dual-head motor; 43, transmission shaft; 44, first bevel gear; 05, adjusting mechanism; 51, lead screw; 52, second bevel gear; 53, slider; 54, tension roller; 06, correction mechanism; 61, photoelectric sensor; 62, hydraulic cylinder; 63, tray; 64, electric cylinder; 65, clamping plate. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0021] This utility model discloses a tension control mechanism for self-adhesive label printing, including a winding mechanism 01; it also includes a synchronization mechanism 02, a buffer mechanism 03, a drive mechanism 04, an adjustment mechanism 05, and a correction mechanism 06. The synchronization mechanism 02 is installed on the winding mechanism 01 to improve the synchronicity of winding and unwinding; the buffer mechanism 03 is installed on the synchronization mechanism 02 to facilitate buffering the tension during label adjustment; the drive mechanism 04 is installed on the winding mechanism 01 to drive the adjustment mechanism 05 to rise and fall; the adjustment mechanism 05 is installed on the winding mechanism 01 to control and adjust the label tension; and the correction mechanism 06 is installed on the winding mechanism 01 to correct the label's deviation. The winding mechanism 01 includes a working... The system comprises a worktable 11, a controller 12, a take-up roller 13, and a top plate 14. The bottom of the worktable 11 is connected to the ground, the controller 12 is mounted on the worktable 11, the take-up roller 13 is mounted on the worktable 11, and the bottom of the top plate 14 is connected to the top of the worktable 11. The synchronization mechanism 02 includes an unwinding roller 21, a first synchronization pulley 22, a second synchronization pulley 23, and a synchronization belt 24. The unwinding roller 21 is mounted on the worktable 11, the first synchronization pulley 22 is mounted on the unwinding roller 21, the second synchronization pulley 23 is mounted on the take-up roller 13, and the synchronization belt 24 is driven between the first synchronization pulley 22 and the second synchronization pulley 23. The buffer mechanism 03 includes two sets of connecting shafts 31 and two sets of springs 3. 2. Two sets of connecting plates 33, two sets of buffer rollers 34, and an angle sensor 35 are included. Two sets of connecting shafts 31 are rotatably mounted on the worktable 11. Two sets of springs 32 are mounted on the worktable 11. The two sets of connecting plates 33 are respectively mounted on the two sets of connecting shafts 31 and respectively connected to the two sets of springs 32. The two sets of buffer rollers 34 are rotatably mounted between the two sets of connecting plates 33. The angle sensor 35 is mounted on the worktable 11 and is connected to the connecting shafts 31 for transmission. The drive mechanism 04 includes two sets of brackets 41, a dual-head motor 42, two sets of transmission shafts 43, and a first bevel gear 44. The bottom ends of the two sets of brackets 41 are connected to the top end of the top plate 14, and the bottom end of the dual-head motor 42 is connected to the top plate 14. The top of 14 is connected, and two sets of drive shafts 43 are rotatably mounted on two sets of brackets 41 respectively. Two sets of first bevel gears 44 are respectively mounted on two sets of drive shafts 43. The adjustment mechanism 05 includes two sets of lead screws 51, two sets of second bevel gears 52, two sets of sliders 53 and tension rollers 54. Two sets of limiting grooves are opened on the worktable 11. Two sets of lead screws 51 are rotatably mounted in the two sets of limiting grooves respectively. The bottom ends of the two sets of second bevel gears 52 are respectively connected to the top ends of the two sets of lead screws 51, and the two sets of second bevel gears 52 are respectively meshed with the two sets of first bevel gears 44. Two sets of sliders 53 are slidably mounted in the two sets of limiting grooves respectively. Tension rollers 54 are rotatably mounted on the two sets of sliders 53.During operation, the operator first controls the winding speed of the take-up roller 13 via the controller 12, facilitating the winding of the printed self-adhesive labels. The top plate 14 facilitates the installation of related printing equipment. The unwind roller 21 rotates to release the unprinted labels. The synchronization between the unwind roller 21 and the take-up roller 13 is improved by using the first synchronous pulley 22, the second synchronous pulley 23, and the synchronous belt 24, preventing the self-adhesive labels from loosening or tearing. When label tension needs adjustment, the controller 12 activates the dual-head motor 42, which drives two sets of drive shafts 43 to rotate. These two sets of drive shafts 43, in turn, drive two sets of first bevel gears 44 to rotate. The two sets of first bevel gears 44 drive the two sets of second bevel gears 52 to rotate, which in turn drive the two sets of lead screws 51 to rotate. The two sets of second bevel gears 52 also drive the two sets of sliders 53 and tension rollers 54 to rise and fall, facilitating label tension adjustment. The label passes over the two sets of buffer rollers 34. When the adjusting mechanism 05 adjusts the label tension, the label drives the two sets of connecting plates 33 and two sets of connecting shafts 31 to rotate. The two sets of connecting shafts 31 compress the two sets of springs 32, preventing the label from tearing due to excessive tension. The angle sensor 35 detects the rotation angle of the connecting shafts 31 and promptly feeds it back to the controller 12, allowing the controller 12 to control the drive mechanism 04 to adjust the tension. Example 2

[0022] like Figures 1 to 5As shown, this utility model discloses a tension control mechanism for self-adhesive label printing, based on embodiment 1. The adjusting mechanism 05 includes two sets of lead screws 51, two sets of second bevel gears 52, two sets of sliders 53, and a tension roller 54. Two sets of limiting grooves are provided on the worktable 11. The two sets of lead screws 51 are rotatably installed in the two sets of limiting grooves. The bottom ends of the two sets of second bevel gears 52 are connected to the top ends of the two sets of lead screws 51, and the two sets of second bevel gears 52 mesh with the two sets of first bevel gears 44. The two sets of sliders 53 are slidably installed in the two sets of limiting grooves, and the tension roller 54 is rotatably installed on the two sets of sliders 53. The correction mechanism 06 includes a photoelectric sensor 61 and four sets of hydraulic cylinders 6... 2. The system consists of a tray 63, two sets of electric cylinders 64, and a clamping plate 65. The top of the photoelectric sensor 61 is connected to the bottom of the top plate 14. Four sets of hydraulic cylinders 62 are installed in pairs on the workbench 11. The tray 63 is installed between the four sets of hydraulic cylinders 62. Both sets of electric cylinders 64 are installed on the tray 63. The top of the clamping plate 65 is connected to the bottom of the two sets of electric cylinders 64. During operation, the operator first controls the winding speed of the take-up roller 13 through the controller 12, which facilitates the take-up roller 13 to wind up the printed self-adhesive labels. The top plate 14 facilitates the installation of related printing equipment. The unwinding roller 21 rotates to release the unprinted labels. The system is equipped with a first synchronous pulley 22 and a second synchronous pulley 23. 3 and the synchronous belt 24 improve the synchronization between the unwinding roller 21 and the take-up roller 13, preventing the self-adhesive label from loosening or tearing. When the label tension needs to be adjusted, the controller 12 controls the start of the dual-head motor 42. The dual-head motor 42 drives the two sets of transmission shafts 43 to rotate. The two sets of transmission shafts 43 drive the two sets of first bevel gears 44 to rotate. The two sets of first bevel gears 44 drive the two sets of second bevel gears 52 to rotate. The two sets of second bevel gears 52 drive the two sets of lead screws 51 to rotate. The two sets of second bevel gears 52 drive the two sets of sliders 53 and tension rollers 54 to rise and fall, facilitating the adjustment of the label tension. The label passes over the two sets of buffer rollers 34. When the adjusting mechanism 05 adjusts the label tension, the label drives the two sets of connecting plates 3. 3 and the two sets of connecting shafts 31 rotate, and the two sets of connecting shafts 31 compress the two sets of springs 32 to prevent the label from tearing due to excessive tension. The angle sensor 35 detects the rotation angle of the connecting shaft 31 and feeds it back to the controller 12 in a timely manner, so that the controller 12 can control the drive mechanism 04 to adjust the tension. The self-adhesive label passes between the tray 63 and the clamping plate 65. The photoelectric sensor 61 detects the conveying direction of the self-adhesive label. When the label is detected to be laterally offset, the take-up roller 13 and the unwind roller 21 are shut off by an electrical signal to stop the conveying. The two sets of electric cylinders 64 push the clamping plate 65 to descend and clamp the label. The two sets of hydraulic cylinders 62 on the same side push the tray 63 and the label to the middle position for correction.

[0023] The dual-head motor 42 of this utility model is commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tension control mechanism for self-adhesive label printing, comprising a winding mechanism (01); characterized in that, It also includes a synchronization mechanism (02), a buffer mechanism (03), a drive mechanism (04), an adjustment mechanism (05), and a correction mechanism (06). The synchronization mechanism (02) is installed on the winding mechanism (01) and improves the synchronization of winding and unwinding. The buffer mechanism (03) is installed on the synchronization mechanism (02) and facilitates buffering the tension during the label adjustment process. The drive mechanism (04) is installed on the winding mechanism (01) and drives the adjustment mechanism (05) to rise and fall. The adjustment mechanism (05) is installed on the winding mechanism (01) and controls and adjusts the label tension. The correction mechanism (06) is installed on the winding mechanism (01) and corrects the label.

2. The self-adhesive label printing tension control mechanism as described in claim 1, characterized in that, The winding mechanism (01) includes a workbench (11), a controller (12), a winding roller (13), and a top plate (14). The bottom end of the workbench (11) is connected to the ground. The controller (12) is installed on the workbench (11). The winding roller (13) is installed on the workbench (11). The bottom end of the top plate (14) is connected to the top end of the workbench (11).

3. The self-adhesive label printing tension control mechanism as described in claim 2, characterized in that, The synchronization mechanism (02) includes an unwinding roller (21), a first synchronization pulley (22), a second synchronization pulley (23), and a synchronization belt (24). The unwinding roller (21) is mounted on the worktable (11), the first synchronization pulley (22) is mounted on the unwinding roller (21), the second synchronization pulley (23) is mounted on the take-up roller (13), and the synchronization belt (24) is driven between the first synchronization pulley (22) and the second synchronization pulley (23).

4. The self-adhesive label printing tension control mechanism as described in claim 2, characterized in that, The buffer mechanism (03) includes two sets of connecting shafts (31), two sets of springs (32), two sets of connecting plates (33), two sets of buffer rollers (34) and an angle sensor (35). The two sets of connecting shafts (31) are rotatably mounted on the worktable (11), the two sets of springs (32) are mounted on the worktable (11), the two sets of connecting plates (33) are respectively mounted on the two sets of connecting shafts (31) and respectively connected to the two sets of springs (32), the two sets of buffer rollers (34) are rotatably mounted between the two sets of connecting plates (33), and the angle sensor (35) is mounted on the worktable (11) and is connected to the connecting shafts (31) in a transmission manner.

5. The self-adhesive label printing tension control mechanism as described in claim 2, characterized in that, The drive mechanism (04) includes two sets of brackets (41), a dual-head motor (42), two sets of transmission shafts (43) and a first bevel gear (44). The bottom ends of the two sets of brackets (41) are connected to the top end of the top plate (14), the bottom end of the dual-head motor (42) is connected to the top end of the top plate (14), the two sets of transmission shafts (43) are rotatably mounted on the two sets of brackets (41) respectively, and the two sets of first bevel gears (44) are mounted on the two sets of transmission shafts (43) respectively.

6. The self-adhesive label printing tension control mechanism as described in claim 5, characterized in that, The adjusting mechanism (05) includes two sets of lead screws (51), two sets of second bevel gears (52), two sets of sliders (53) and tension rollers (54). Two sets of limiting grooves are opened on the worktable (11). The two sets of lead screws (51) are rotatably installed in the two sets of limiting grooves respectively. The bottom ends of the two sets of second bevel gears (52) are connected to the top ends of the two sets of lead screws (51) respectively. The two sets of second bevel gears (52) are meshed with the two sets of first bevel gears (44) respectively. The two sets of sliders (53) are slidably installed in the two sets of limiting grooves respectively. The tension rollers (54) are rotatably installed on the two sets of sliders (53).

7. The self-adhesive label printing tension control mechanism as described in claim 2, characterized in that, The correction mechanism (06) includes a photoelectric sensor (61), four sets of hydraulic cylinders (62), a tray (63), two sets of electric cylinders (64) and a clamping plate (65). The top of the photoelectric sensor (61) is connected to the bottom of the top plate (14). The four sets of hydraulic cylinders (62) are installed opposite each other on the workbench (11). The tray (63) is installed between the four sets of hydraulic cylinders (62). The two sets of electric cylinders (64) are installed on the tray (63). The top of the clamping plate (65) is connected to the bottom of the two sets of electric cylinders (64).

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