PET flatness detection device

Abstract

The utility model relates to an RFID (Radio Frequency Identification Device) label production device, in particular to a PET (Polyethylene Terephthalate) flatness detection device. The utility model aims to provide a PET flatness detection device which has the characteristics of simple structure, convenience in use and good detection effect. According to the technical scheme, the PET flatness detection device is characterized by comprising a front guide roller, a rear guide roller, a support, sensors and a controller, wherein the front guide roller and the rear guide roller are used for guiding PET to move; the support is arranged between the front guide roller and the rear guide roller and located above a PET film; the sensors are arranged at the two ends of the support through adjusting mechanisms and used for detecting the distance between the PET film and the sensors;

Description

Technical Field

[0001] The utility model relates to a production device for RFID tags, in particular to a device for detecting the flatness of PET. Background Art

[0002] With the continuous development of Internet of Things technology, radio frequency identification (RFID) can realize wireless and rapid identification of objects, and has been widely used in the fields of warehousing, logistics, retail, clothing, transportation, libraries, aviation, etc. RFID mainly emits electromagnetic waves through a reading device, and the object to be measured will return corresponding information for use after receiving the electromagnetic waves. The RFID antenna is responsible for receiving and emitting electromagnetic waves, and its performance has a direct impact on the identification effect.

[0003] The manufacturing method of the RFID antenna is as follows: first, a PET film is laminated with aluminum foil, then a pattern is printed on the aluminum foil, then the aluminum foil is etched, and finally, after detection and slitting, the RFID antenna is obtained.

[0004] During lamination, the PET film needs to be continuously extracted from the PET coil. If there are defects in the flatness of the PE film (the edges on one or both sides are wavy), it will affect the quality of the laminated product. Therefore, it is necessary to detect the flatness of the PET film. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies in the above background art, and provide a device for detecting the flatness of PET, which has the characteristics of simple structure, convenient use and good detection effect.

[0006] The technical solution of the utility model is as follows:

[0007] A device for detecting the flatness of PET, characterized in that: it includes a front guide roller and a rear guide roller for guiding the movement of PET, a bracket arranged between the front guide roller and the rear guide roller and located above the PET film, sensors arranged at both ends of the bracket through an adjustment structure for detecting the distance from the PET film, and a controller electrically connected to the sensors.

[0008] The adjustment structure includes a slider slidably positioned horizontally on the bracket, a connecting plate fixed to the slider, and a first locking member for locking the slider; the sensor is fixed to the connecting plate.

[0009] The first locking member includes a first bolt meshing with the screw hole of the connecting plate, and a pressure plate and a handle respectively arranged at both ends of the first bolt.

[0010] The adjustment structure further includes a rotating plate rotatably positioned on the connecting plate, and a second locking member for locking the rotating plate; the sensor is fixed to the rotating plate.

[0011] The second locking member includes a second bolt fixed to the rotating plate and passing through the arc-shaped groove of the connecting plate, and a wing nut engaged with the second bolt.

[0012] The axis of the first bolt is perpendicular to the length direction of the bracket; the axis of the second bolt is parallel to the length direction of the bracket; the axis of the second bolt is parallel to the rotation axis of the rotating plate.

[0013] The beneficial effects of the present utility model are as follows:

[0014] In the present utility model, sensors are provided on both side edges of the PET. The sensors are used to measure the vertical distances from both side edges of the PET. When the distances exceed the set values, it indicates that the flatness of the PET does not meet the standard, and thus a prompt is issued. The structure is simple and easy to use, and it has high accuracy and reliability for the flatness detection of the PET. Description of the Drawings

[0015] Figure 1 is the front view structural schematic diagram of the present utility model.

[0016] Figure 2 is the top view structural schematic diagram of the present utility model.

[0017] Figure 3 is the three-dimensional structural schematic diagram of the adjustment structure of the present utility model.

[0018] Figure 4 is the top view structural schematic diagram of the adjustment structure of the present utility model.

[0019] Figure 5 is one of the working state schematic diagrams of the present utility model.

[0020] Figure 6 is the other working state schematic diagram of the present utility model.

[0021] Reference numerals: front guide roller 1, rear guide roller 2, bracket 3, sensor 4, slider 5, connecting plate 6, first plate body 6-1, screw hole 6-1-1, second plate body 6-2, arc-shaped groove 6-2-1, first bolt 7, pressure plate 7-1, handle 7-2, rotating plate 8, second bolt 9, wing nut 9-1, PET film 10. Detailed Embodiments

[0022] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] As Figure 1As shown in the figure, the PET flatness detection device includes a frame, a front guide roller 1, a rear guide roller 2, a bracket 3, a sensor 4, and a controller.

[0024] The front guide roller and the rear guide roller are arranged in parallel in the same horizontal plane and are rotatably positioned on the frame about a horizontal axis (the frame is omitted in the figure). The front guide roller and the rear guide roller are used to guide the horizontal movement of the PET film, and the front guide roller and the rear guide roller are driven by a power mechanism (the power mechanism is omitted in the figure).

[0025] The bracket is fixed to the frame and is parallel to the front guide roller and the rear guide roller. The bracket is also arranged between the front guide roller and the rear guide roller and is located above the PET film 10.

[0026] The sensor is arranged at both ends of the bracket. The sensor is used to detect the distance H from the PET film below. The sensor is a laser distance sensor. The controller (omitted in the figure) is electrically connected to the sensor. The sensor is arranged at both ends of the bracket through an adjustment structure, and the adjustment structure is used to adjust the lateral position and the elevation angle of the sensor.

[0027] In the adjustment structure, the bracket is a slide rail, and the slider 5 is slidably positioned on the bracket. The connecting plate 6 is fixed to the slider. The first locking member is used to lock the slider to prevent it from sliding. The rotating plate 8 is rotatably positioned on the connecting plate. The second locking member is used to lock the rotating plate to prevent it from rotating. The sensor is fixed to the rotating plate.

[0028] The connecting plate is L-shaped, including a first plate body 6-1 and a second plate body 6-2 arranged vertically. The first plate body is provided with a screw hole 6-1-1, and the second plate body is provided with an arc-shaped groove 6-2-1. The first locking member includes a first bolt 7 engaged with the screw hole and a pressing plate 7-1 and a handle 7-2 respectively arranged at both ends of the first bolt. Rotating the handle can make the pressing plate press against the bracket to prevent the slider from sliding. The second locking member includes a second bolt 9 fixed to the rotating plate and passing through the arc-shaped groove and a wing nut 9-1 engaged with the second bolt. Rotating the wing nut can make the wing nut press against the connecting plate to prevent the rotating plate from rotating.

[0029] The axis of the first bolt is perpendicular to the length direction of the bracket ( Figure 1 the horizontal direction); the axis of the second bolt is parallel to the length direction of the bracket; the axis of the second bolt is parallel to the rotation axis of the rotating plate ( Figure 1 the horizontal direction).

[0030] All components of the present utility model are of the prior art and can be obtained by outsourcing.

[0031] The adjustment method of the present utility model is as follows:

[0032] 1. Loosen the first locking member, adjust the sensors on both sides to the appropriate position according to the width of the PET film, and then tighten the first locking member to fix the position.

[0033] 2. Loosen the second locking member, turn the sensors to face the edge of the PET film below, and the sensors on both sides should maintain the same elevation angle. Then tighten the second locking member to fix the position.

[0034] 3. Start the detection. The PET film drawn from the PET coil first passes through the present utility model to detect the flatness, and then enters the subsequent device for lamination with the aluminum foil.

[0035] The working principle of the present utility model is as follows:

[0036] The PET film continuously passes below the sensors, and the sensors measure the vertical distance from the edge of the PET film in real time ( Figure 1 shown as H in the figure). The controller makes a judgment based on the preset value and the tolerance. As Figure 5 shown, when the flatness of the PET film meets the requirements, the edge of the PET film passing between the front guide roller and the rear guide roller is in a horizontal state a, and H ≤ preset value + tolerance. As Figure 6 shown, when the flatness of the PET film does not meet the requirements, the edge of the PET film passing between the front guide roller and the rear guide roller is in a bent state b under the action of gravity, and H > preset value + tolerance. The controller issues an alarm signal, and the PET film stops moving and waits for manual intervention.

[0037] The preferred embodiments of the present utility model are shown in the accompanying drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

Claims

1. PET flatness detection device, characterized in that: It includes a front guide roller (1) and a rear guide roller (2) for guiding the movement of the PET, a bracket (3) arranged between the front guide roller and the rear guide roller and located above the PET film, sensors (4) arranged at both ends of the bracket through an adjustment structure for detecting the distance from the PET film, and a controller electrically connected to the sensors.

2. The PET flatness detection device according to claim 1, characterized in that: The adjustment structure includes a slider (5) slidably positioned on the bracket, a connecting plate (6) fixed to the slider, and a first locking member for locking the slider; the sensor is fixed to the connecting plate.

3. The PET flatness detection device according to claim 2, wherein: The first locking member includes a first bolt (7) meshing with the threaded hole of the connecting plate, and a pressure plate (7-1) and a handle (7-2) respectively arranged at both ends of the first bolt.

4. The PET flatness detection device according to claim 3, wherein: The adjustment structure further includes a rotating plate (8) rotatably positioned on the connecting plate, and a second locking member for locking the rotating plate; the sensor is fixed to the rotating plate.

5. The PET flatness detection device according to claim 4, wherein: The second locking member includes a second bolt (9) fixed to the rotating plate and passing through the arc-shaped groove of the connecting plate, and a wing nut (9-1) meshing with the second bolt.

6. The PET flatness detection device according to claim 5, wherein: The axis of the first bolt is perpendicular to the length direction of the bracket; the axis of the second bolt is parallel to the length direction of the bracket; the axis of the second bolt is parallel to the rotation axis of the rotating plate.

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