Self-adaptive adjusting device for laminating tension of printed matter

Abstract

The utility model relates to the technical field of presswork laminating, and particularly discloses a presswork laminating tension self-adaptive adjusting device which is characterized in that a position detection mechanism monitors position deviation of a presswork on the outer layer of an unwinding roller in real time, and a first position adjusting mechanism synchronously adjusts the position of the shaft end of the unwinding roller to correct path deviation; meanwhile, the tension detection mechanism dynamically detects the tension of the printed matter and keeps the tension constant through the second position adjusting mechanism. According to the design, linkage control of unwinding position compensation and tension adjustment is achieved, the problem that unwinding deviation and tension fluctuation influence each other in the prior art is solved, and the tension stability and the adjustment response speed in the film covering process are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing film coating, in particular to a printing film coating tension self-adaptive adjusting device. BACKGROUND

[0002] In the printing film coating process, the stability of tension control is the core factor determining the coating quality and production efficiency. During the high-speed unwinding, coating and winding processes of the printing material, if the tension is too large, it is easy to cause material stretching deformation or even breakage, and if the tension is too small, it will cause the coating not to fit, wrinkle or shift, and further produce defects such as air bubbles and film peeling. Especially in the continuous production scene, factors such as the gradual decrease of the unwinding roller diameter with the consumption of the material, the material elasticity fluctuation or the change of the equipment running speed will cause dynamic tension fluctuation, further aggravating the quality risk. Therefore, realizing real-time monitoring and self-adaptive adjustment of the tension is the key requirement to ensure the coating flatness, material utilization rate and stable operation of the equipment.

[0003] Traditional tension adjusting technology mainly realizes through mechanical tension rollers or simple feedback systems. For example, a gravity roller or a spring mechanism is used to provide constant tension, relying on mechanical structure to passively compensate for tension changes; or a tension sensor is used to detect real-time tension values, and the unwinding motor speed or the winding traction force is adjusted manually to maintain stable tension. Some improved schemes set independent control units at different sections of the equipment, and relieve tension fluctuations through segmented adjustment. However, these methods generally rely on manual experience or local feedback, and are difficult to dynamically adapt to complex working conditions such as unwinding roller position offset and material elasticity change, and the adjusting precision and response speed are limited.

[0004] Therefore, the existing technology has the following limitations: the position of the unwinding roller is easy to deviate during the consumption of the material, and the traditional method lacks real-time monitoring and compensation mechanism for the displacement of the unwinding roller, which causes the deviation of the material conveying path and indirectly causes tension fluctuation; the tension detection device is mostly fixedly installed, cannot accurately track the actual stress state of the tension roller, and the adjusting mechanism has a lagging response, making it difficult to realize instantaneous closed-loop control, and an integrated and self-adaptive solution is urgently needed to overcome the above defects. CONTENT OF THE INVENTION

[0005] In order to overcome the above-mentioned defects, the present application provides a printing film coating tension self-adaptive adjusting device.

[0006] The printing film coating tension self-adaptive adjusting device provided by the present application adopts the following technical scheme:

[0007] The utility model provides a kind of printed matter film covering tension self-adapting adjusting device, including printing machine, unwinding roller and tension roller, the top of the printing machine is equipped with multiple mounting brackets, the unwinding roller and the tension roller are rotationally installed on corresponding the mounting bracket, the unwinding roller and the tension roller are around and set with printed matter, the mounting bracket is provided with position detection mechanism for detecting the position of the outermost printed matter of the unwinding roller, is provided with first position adjusting mechanism for adjusting the shaft end position of the unwinding roller, the tension roller is provided with tension detection mechanism for detecting the tension of printed matter and second position adjusting mechanism for adjusting the tension on the tension roller to keep constant.

[0008] By adopting the above technical scheme, the position detection mechanism monitors the position deviation of the outermost printed matter of the unwinding roller in real time, the first position adjusting mechanism adjusts the shaft end position of the unwinding roller synchronously to correct the path deviation, and the tension detection mechanism dynamically detects the tension of the printed matter and maintains the constant tension through the second position adjusting mechanism. The design realizes the linkage control of unwinding position compensation and tension adjustment, solves the problem of mutual influence between unwinding deviation and tension fluctuation in the traditional technology, and significantly improves the stability and adjustment response speed of tension in the film covering process.

[0009] Optionally, the position detection mechanism includes a laser emitter and a laser receiver arranged on the mounting bracket, the laser emitter and the laser receiver are located at both ends of the unwinding roller and the position of the outermost printed matter in the initial state of the unwinding roller, and when the position of the outermost printed matter of the unwinding roller changes, the first position adjusting mechanism drives the unwinding roller to return to the initial position.

[0010] By adopting the above technical scheme, when the material consumption causes the outermost position to deviate from the initial setting, the change of the laser signal triggers the first position adjusting mechanism to drive the unwinding roller to reset. This scheme avoids the adjustment lag caused by manual intervention or mechanical limiting through high-precision optical detection and automatic reset mechanism, ensures that the unwinding path is always on the preset track, reduces the tension fluctuation caused by unwinding deviation from the source, and enhances the self-adaptive ability of the system.

[0011] Optionally, the first position adjusting mechanism includes a driving member, a lead screw and a fixed seat, the driving member, the lead screw and the fixed seat are symmetrically arranged in two groups about the unwinding roller, the driving member is installed on the mounting bracket, the lead screw is coaxially fixed on the driving member, the fixed seat is rotationally installed on the shaft end of the unwinding roller, a threaded hole is formed through the fixed seat for the lead screw to threadedly pass through, and the lead screw is threadedly adapted to the threaded hole.

[0012] By adopting the technical scheme, when the driving member drives the screw rod to rotate, the fixed seat moves along the axial direction of the threaded hole, so that the positions of the two ends of the unwinding roller are accurately adjusted. The symmetrical driving design eliminates the uneven stress or jamming risk caused by unilateral adjustment, the screw rod transmission provides high-precision linear displacement control, ensures that the unwinding roller resetting process is stable and synchronous, effectively maintains the linearity and consistency of the material conveying path, and avoids film wrinkles or tension sudden changes caused by shaft end deviation.

[0013] Optionally, the tension detection mechanism comprises a fixed frame and a tension meter, both ends of the tension roller are rotatably installed on the fixed frame, and there is a certain activity gap between the two shaft ends and the fixed frame, the tension meter is pull-connected with the shaft end of the tension roller, and is used for measuring the tension of the tension roller.

[0014] By adopting the technical scheme, both ends of the tension roller are installed on the fixed frame through the activity gap, so that the tension roller can produce a slight displacement with the change of the tension of the printed matter, and the tension meter directly measures the stress of the shaft end of the tension roller and converts it into real-time tension data. The activity gap design reduces the interference of the mechanical structure on the tension detection, and in combination with the high sensitivity characteristics of the tension meter, the dynamic and accurate measurement of the tension is realized, and the measurement error caused by the installation rigidity of the traditional fixed sensor is overcome, thereby providing a reliable data basis for subsequent adjustment.

[0015] Optionally, the second position adjustment mechanism comprises a telescopic member installed on the mounting frame, and a fixed connection between the telescopic end of the telescopic member and the fixed frame.

[0016] By adopting the technical scheme, the telescopic member dynamically adjusts the position of the fixed frame according to the tension data fed back by the tension meter, quickly compensates the tension fluctuation by changing the contact angle or pressure of the tension roller and the printed matter. The linear driving characteristics of the telescopic member and the tension meter data form a closed loop control, realize millisecond-level response and micron-level position adjustment, ensure that the tension is always stable within the set threshold, solve the delay problem of traditional mechanical or motor speed regulation, and significantly improve the uniformity and continuity of the film quality.

[0017] In summary, the present application has at least one of the following beneficial technical effects:

[0018] The position detection mechanism monitors the position deviation of the outer printed matter of the unwinding roller in real time, the first position adjustment mechanism synchronously adjusts the position of the shaft end of the unwinding roller to correct the path deviation, and the tension detection mechanism dynamically detects the tension of the printed matter and maintains the constant tension through the second position adjustment mechanism. The design realizes the linkage control of the unwinding position compensation and the tension adjustment, solves the problem that the unwinding deviation and the tension fluctuation affect each other in the traditional technology, and significantly improves the stability and adjustment response speed of the tension in the film coating process.

[0019] The tension roller is installed on the fixed frame through a movable gap at both ends, so that the tension roller can produce a slight displacement with the change of the tension of the printed matter. The tension meter directly pulls and measures the force on the shaft end of the tension roller and converts it into real-time tension data. The movable gap design reduces the interference of the mechanical structure on the tension detection. Combined with the high sensitivity characteristics of the tension meter, the dynamic and accurate measurement of the tension is realized, and the measurement error caused by the installation rigidity of the traditional fixed sensor is overcome, providing a reliable data basis for subsequent adjustment.

[0020] The telescopic part dynamically adjusts the position of the fixed frame according to the tension data fed back by the tension meter, quickly compensates for the tension fluctuation by changing the contact angle or pressure of the tension roller with the printed matter, and realizes millisecond-level response and micron-level position adjustment through the linear driving characteristics of the telescopic part and the closed-loop control of the tension meter data, so as to ensure that the tension is always stable within the set threshold, and solves the delay problem of traditional mechanical or motor speed regulation, significantly improving the uniformity and continuity of the film coating quality. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a whole structure schematic diagram of a printed matter film coating tension self-adaptive adjustment device in the embodiment of the present application;

[0022] Figure 2 is Figure 1 is a whole structure schematic diagram of another view of a printed matter film coating tension self-adaptive adjustment device in the embodiment of the present application;

[0023] Figure 3 is Figure 1 is a structure schematic diagram of the first position adjustment mechanism and the second position adjustment mechanism in the embodiment of the present application.

[0024] Fig. 1 is a schematic diagram of a printing machine; Fig. 2 is a schematic diagram of a printed matter film coating tension self-adaptive adjustment device in the embodiment of the present application; Fig. 3 is a schematic diagram of another view of the printed matter film coating tension self-adaptive adjustment device in the embodiment of the present application; Fig. 4 is a structure schematic diagram of a first position adjustment mechanism and a second position adjustment mechanism in the embodiment of the present application; Fig. 5 is a schematic diagram of a position detection mechanism in the embodiment of the present application; Fig. 6 is a schematic diagram of a tension detection mechanism in the embodiment of the present application; Fig. 7 is a schematic diagram of a telescopic part in the embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be described in detail in combination with the accompanying Figures 1-3 The present application will be further described in detail.

[0026] The present application discloses a printed matter film coating tension self-adaptive adjustment device.

[0027] Refer to Figure 1 and Figure 2The utility model provides a kind of printed matter film covering tension self-adaptive adjusting device, including printing machine 1, unwinding roller 11 and tension roller 12, printing machine 1 top is equipped with multiple mounting frames 2, unwinding roller 11 and tension roller 12 are rotationally installed on corresponding mounting frame 2, and printing matter is wound on unwinding roller 11 and tension roller 12, mounting frame 2 is provided with position detection mechanism 3 for detecting the position of the outermost printing matter of unwinding roller 11, is provided with first position adjusting mechanism 4 for adjusting the shaft end position of unwinding roller 11, tension detection mechanism 5 for detecting the tension of printing matter is provided on tension roller 12 and second position adjusting mechanism 6 for adjusting the tension on tension roller 12 to keep constant.

[0028] Position detection mechanism 3 monitors the position deviation of the outermost printing matter of unwinding roller 11 in real time, and first position adjusting mechanism 4 adjusts the shaft end position of unwinding roller 11 to correct the path deviation, while tension detection mechanism 5 dynamically detects the tension of printing matter and maintains the constant tension through second position adjusting mechanism 6.

[0029] Referring to Figure 1 and Figure 2 , position detection mechanism 3 includes laser emitter 31 and laser receiver 32 arranged on mounting frame 2, laser emitter 31 and laser receiver 32 are located at both ends of unwinding roller 11, and are located at the position of the outermost printing matter in the initial state of unwinding roller 11, when the position of the outermost printing matter of unwinding roller 11 changes, first position adjusting mechanism 4 drives unwinding roller 11 to return to the initial position.

[0030] When the outermost position deviates from the initial setting due to material consumption, the change of laser signal triggers first position adjusting mechanism 4 to drive unwinding roller 11 to reset. This scheme avoids the adjustment lag caused by manual intervention or mechanical limiting through high-precision optical detection and automatic reset mechanism, ensures that the unwinding path is always on the preset track, reduces the tension fluctuation caused by unwinding deviation from the source, and enhances the adaptive ability of the system.

[0031] Referring to Figure 2 and Figure 3 , first position adjusting mechanism 4 includes driving part 41, lead screw 42 and fixed seat 43, driving part 41, lead screw 42 and fixed seat 43 are symmetrically provided with two groups about unwinding roller 11, driving part 41 adopts a reduction motor, in other embodiments, servo motor or stepper motor can also be used, driving part 41 is installed on mounting frame 2, lead screw 42 is coaxially fixed on driving part 41, fixed seat 43 is rotationally installed on the shaft end of unwinding roller 11, threaded hole is formed through on fixed seat 43 for lead screw 42 to threadedly pass through, and lead screw 42 is threadedly adapted with threaded hole.

[0032] When the driving member 41 drives the screw rod 42 to rotate, the fixed seat 43 moves axially along the threaded hole, thereby precisely adjusting the positions of the two ends of the unwinding roller 11. The symmetrical driving design eliminates the risk of uneven force or jam caused by unilateral adjustment, and the screw rod 42 transmission provides high-precision linear displacement control, ensuring that the unwinding roller 11 is stable and synchronous during the resetting process, effectively maintaining the linearity and consistency of the material conveying path, and avoiding film wrinkles or sudden tension changes caused by shaft end offset.

[0033] With reference to Figure 1 and Figure 3 , the tension detection mechanism 5 includes a fixed frame 51 and a tension meter, the two ends of the tension roller 12 are rotatably installed on the fixed frame 51, and there is a certain play between the two shaft ends and the fixed frame 51, the tension meter is pull-connected with the shaft ends of the tension roller 12, and is used for measuring the tension of the tension roller 12 received by the printed matter.

[0034] The two ends of the tension roller 12 are installed on the fixed frame 51 through the play, so that the tension roller 12 can produce a slight displacement with the change of the tension of the printed matter, and the tension meter directly measures the stress of the shaft end of the tension roller 12 and converts it into real-time tension data. The play design reduces the interference of the mechanical structure on the tension detection, and in combination with the high sensitivity characteristics of the tension meter, realizes the dynamic and accurate measurement of the tension, and overcomes the measurement error caused by the installation rigidity of the traditional fixed sensor, thereby providing a reliable data basis for subsequent adjustment. In other feasible embodiments, the tension meter can also be replaced by a pressure sensor.

[0035] With reference to Figure 1 , Figure 2 and Figure 3 , the second position adjustment mechanism 6 includes a telescopic member 61 installed on the mounting frame 2, and the telescopic end of the telescopic member 61 is fixedly connected with the fixed frame 51. The telescopic member 61 is electrically telescopic, and the telescopic member 61 dynamically adjusts the position of the fixed frame 51 according to the tension data fed back by the tension meter, quickly compensates for the tension fluctuation by changing the contact angle or pressure of the tension roller 12 with the printed matter. The linear driving characteristics of the telescopic member 61 and the tension meter data form a closed-loop control, realize millisecond-level response and micron-level position adjustment, ensure that the tension is always stable within the set threshold, solve the delay problem of traditional mechanical or motor speed regulation, and significantly improve the uniformity and continuity of the film quality.

[0036] The implementation principle of the printing product film covering tension self-adaptive adjusting device is that the position detection mechanism 3 monitors the position deviation of the outer printing product of the unwinding roller 11 in real time, the first position adjusting mechanism 4 synchronously adjusts the shaft end position of the unwinding roller 11 to correct the path deviation, and the tension detection mechanism 5 dynamically detects the printing product tension and maintains the constant tension through the second position adjusting mechanism 6. The design realizes the linkage control of unwinding position compensation and tension adjustment, solves the problem that the unwinding deviation and the tension fluctuation influence each other in the traditional technology, and significantly improves the stability and the adjusting response speed of the tension in the film covering process.

[0037] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A printed matter film laminating tension self-adaptive adjusting device, comprising a printing machine (1), a unwinding roller (11) and a tension roller (12), characterized in that: The printing machine (1) top is provided with a plurality of mounting racks (2), the unwinding roller (11) and the tension roller (12) are rotatably mounted on the corresponding mounting racks (2), the unwinding roller (11) and the tension roller (12) are wound with printed matter, the mounting rack (2) is provided with a position detection mechanism (3) for detecting the position of the outermost printed matter of the unwinding roller (11), and a first position adjusting mechanism (4) for adjusting the shaft end position of the unwinding roller (11), the tension roller (12) is provided with a tension detection mechanism (5) for detecting the tension of the printed matter and a second position adjusting mechanism (6) for adjusting the tension of the tension roller (12) to keep constant.

2. The tension self-adaptive adjusting device for printing film according to claim 1, characterized in that: The position detection mechanism (3) comprises a laser emitter (31) and a laser receiver (32) arranged on the mounting rack (2), the laser emitter (31) and the laser receiver (32) are respectively located at both ends of the unwinding roller (11), and the position of the outermost printed matter in the initial state of the unwinding roller (11), when the outermost position of the printed matter of the unwinding roller (11) changes, the first position adjusting mechanism (4) drives the unwinding roller (11) to return to the initial position.

3. The tension self-adaptive adjusting device for printing film according to claim 2, characterized in that: The first position adjusting mechanism (4) comprises a driving member (41), a lead screw (42) and a fixed seat (43), the driving member (41), the lead screw (42) and the fixed seat (43) are symmetrically provided with two groups about the unwinding roller (11), the driving member (41) is mounted on the mounting rack (2), the lead screw (42) is coaxially fixed on the driving member (41), the fixed seat (43) is rotatably mounted on the shaft end of the unwinding roller (11), the fixed seat (43) is provided with a threaded hole for the threaded lead screw (42) to pass through, and the lead screw (42) is threadedly matched with the threaded hole.

4. The tension self-adaptive adjusting device for printing film according to claim 1, characterized in that: The tension detection mechanism (5) comprises a fixed frame (51) and a tension meter, both ends of the tension roller (12) are rotatably mounted on the fixed frame (51), and there is a certain activity gap between the two shaft ends and the fixed frame (51), the tension meter is connected with the shaft end of the tension roller (12) for measuring the tension of the tension roller (12).

5. The tension self-adaptive adjusting device for printing film according to claim 4, characterized in that: The second position adjusting mechanism (6) comprises a telescopic member (61) mounted on the mounting rack (2), and the telescopic end of the telescopic member (61) is fixedly connected with the fixed frame (51).

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