Handheld film tension auxiliary detection device

Abstract

The utility model relates to a handheld film tension auxiliary detection device which comprises a fixing frame, a rotating shaft, a tension pendulum shaft, a sensor and an elastic piece. The fixing frame is provided with a limiting groove, the sensor is fixed to one end of the fixing frame, one end of the elastic piece is connected with the sensor, and the other end of the elastic piece is connected with the tension pendulum shaft. The tension pendulum shaft is rotatably installed on the fixing frame and located in the limiting groove, the rotating shaft is rotatably fixed to the fixing frame, the tension pendulum shaft is parallel to the rotating shaft, and the rotating shaft is located on the side, away from the sensor, of the tension pendulum shaft. Compared with the prior art, the device has the advantages of high measurement accuracy, simple structure, low cost, flexibility in use and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a die cutting device field especially hand -held type film tension auxiliary detection device. BACKGROUND

[0002] When the roll film is unwound, the torque is unchanged, and as the material is gradually unwound, the outer diameter gradually decreases, and the tension gradually increases; when the material is wound, the torque is unchanged, and as the material is gradually wound, the outer diameter gradually increases, and the tension gradually decreases. By monitoring the tension during the winding and unwinding of the roll material, the tension of the film is controlled, which is crucial for the conveying quality, processing precision and material utilization of the product.

[0003] At present, the control of material tension can be estimated by hand feeling, and as the material roll diameter changes, the excitation current of the clutch and brake is manually adjusted in stages, with the worst precision; secondly, an automatic tension detector is integrated on the equipment for control, but the structure is high in price and large in space; and it needs to be integrated in the equipment system at the beginning of equipment design, and a tension detector needs to be provided for each winding and unwinding shaft, which is not flexible to use; the tension can also be calculated by inputting the initial roll diameter and material thickness on the equipment, and the braking force of the material unwinding shaft is smaller for each less material, and since the tension F is not directly measured, there will be errors due to the inconsistency of the actual initial roll diameter and thickness, and the precision is general.

[0004] In summary, the existing tension control of the material roll has the problems of high equipment cost, large space occupation and inflexible use, or low tension detection precision; therefore, it is necessary to provide a film tension auxiliary detection device which is convenient to use, low in cost and high in measurement precision. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of high cost, inflexible use or low detection precision of the prior art and provides a hand -held type film tension auxiliary detection device.

[0006] The purpose of the utility model can be realized by the following technical schemes:

[0007] A hand -held type film tension auxiliary detection device, including fixed frame, rotation shaft, tension swing shaft, sensor and elastic part,

[0008] The fixed frame is provided with a limiting groove, the sensor is fixed at one end of the fixed frame, one end of the elastic part is connected with the sensor, and the other end is connected with the tension swing shaft; the tension swing shaft is rotatably installed on the fixed frame and located in the limiting groove, the rotation shaft is rotatably fixed on the fixed frame, the tension swing shaft and the rotation shaft are parallel to each other, and the rotation shaft is located on the side of the tension swing shaft away from the sensor.

[0009] Preferably, the sensor is a strain sensor.

[0010] Preferably, the elastic member is a spring.

[0011] Preferably, the rotating shaft comprises a first rotating shaft and a second rotating shaft, and the first rotating shaft and the second rotating shaft are distributed on two sides of the tension pendulum shaft.

[0012] Preferably, the first rotating shaft and the second rotating shaft are symmetrically distributed on two sides of the tension pendulum shaft.

[0013] Preferably, the rotating shaft and the tension pendulum shaft have the same diameter.

[0014] Preferably, the fixing frame comprises a first fixing block and a second fixing block, and the first fixing block and the second fixing block are fixed at two ends of the rotating shaft, respectively.

[0015] Preferably, a holding handle is arranged on a side of the fixing frame away from the rotating shaft.

[0016] Preferably, a display screen is arranged on the holding handle.

[0017] Preferably, a battery compartment is further arranged on the holding handle.

[0018] Compared with the prior art, the auxiliary detection device has the following advantages:

[0019] (1) The film material passes through the outside of the rotating shaft and the tension pendulum shaft, when the tension of the film material increases, the tension pendulum shaft moves along the limiting groove, the elastic member is stretched, the tension pendulum shaft approaches the rotating shaft, and the data of the sensor changes; as the tension of the film material decreases, the tension pendulum shaft moves upward, the elastic member contracts, the data of the sensor changes, and the auxiliary detection of the tension of the film material is completed.

[0020] The tension pendulum shaft and the sensor are connected through the elastic member, and move up and down in the limiting groove, when the tension of the film material changes, the elastic member stretches and contracts, the data of the sensor changes, and the auxiliary detection of the film tension is completed. The auxiliary detection device has the advantages of simple overall structure, small size, convenient operation, and the detection structure based on the displacement of the tension pendulum shaft for real-time measurement, which belongs to real-time measurement and has high measurement accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The auxiliary detection device provided by the utility model is shown in the structure schematic view of one end thereof;

[0022] Figure 2 The auxiliary detection device provided by the utility model is shown in the structure schematic view of one end thereof;

[0023] Figure 3 The auxiliary detection device provided by the utility model is shown in the structure schematic view of one end thereof;

[0024] In the figure: 1, fixed frame, 2, rotating shaft, 3, tension swing shaft, 4, sensor, 5, elastic piece, 6, film material, 7, display screen, 8, battery compartment; 11, limiting groove, 21, first rotating shaft, 22, second rotating shaft. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] It should be noted that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0030] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0031] Example 1

[0032] like Figure 1 As shown, this embodiment provides a handheld film tension auxiliary detection device, including a fixing frame 1, a rotating shaft 2, a tension swing shaft 3, a sensor 4, and an elastic element 5;

[0033] The fixed frame 1 is provided with a limiting groove 11. The sensor 4 is fixed at one end of the fixed frame 1. One end of the elastic element 5 is connected to the sensor 4, and the other end is connected to the tension swing shaft 3. The tension swing shaft 3 is rotatably mounted on the fixed frame 1 and is located in the limiting groove 11. The rotating shaft 2 is rotatably fixed on the fixed frame 1. The tension swing shaft 3 and the rotating shaft 2 are parallel to each other. The rotating shaft 2 is located on the side of the tension swing shaft 3 away from the sensor 4.

[0034] Working principle: The thin film material 6 is passed through the outside of the rotating shaft 2 and the tension swing shaft 3. When the tension of the thin film material 6 increases, the tension swing shaft 3 moves along the limiting groove 11, causing the elastic element 5 to stretch. The tension swing shaft 3 moves closer to the rotating shaft 2, and the data of the sensor 4 changes. As the tension of the thin film material 6 decreases, the tension swing shaft 3 moves upward, the elastic element 5 contracts, and the data of the sensor 4 changes, thus completing the auxiliary detection of the tension of the thin film material 6.

[0035] By connecting the tension pendulum shaft 3 and the sensor 4 via an elastic element 5, and allowing it to move up and down within the limiting groove 11, the elastic element 5 expands and contracts as the tension of the thin film material 6 changes, causing the data from the sensor 4 to change, thus providing auxiliary detection of the thin film tension. The auxiliary detection device has a simple overall structure, is compact in size, and is easy to operate. Furthermore, its real-time measurement based on the displacement of the tension pendulum shaft 3 ensures high accuracy.

[0036] Furthermore, sensor 4 is a strain gauge sensor; elastic element 5 is a spring. The fixing frame 1 includes a first fixing block and a second fixing block, which are respectively fixed at both ends of the rotating shaft 2.

[0037] The two ends of the tension pendulum shaft 3 are rotatably mounted on the first fixed block and the second fixed block through bearings, and the tension pendulum shaft 3 can move up and down along the limiting groove 11, and the two ends of the tension pendulum shaft 3 are connected to corresponding strain sensors through springs. When the tension pendulum shaft 3 is not stressed, it is located at the upper end of the limiting groove 11, and the change of the resistance value of the strain sensor caused by the stretching of the spring can determine the tension of the film material 6 according to the average value of the detection results of the sensors at the two ends of the tension pendulum shaft 3. It can avoid the situation that the tension pendulum shaft 3 and the film material 6 cannot be completely perpendicular in the handheld auxiliary detection device, which leads to a large measurement error, and improve the measurement accuracy.

[0038] In a preferred embodiment, the rotating shaft 2 includes a first rotating shaft 21 and a second rotating shaft 22, and the first rotating shaft 21 and the second rotating shaft 22 are distributed on both sides of the tension pendulum shaft 3.

[0039] Further, the first rotating shaft 21 and the second rotating shaft 22 are symmetrically distributed on both sides of the tension pendulum shaft 3.

[0040] Among them, the diameters of the rotating shaft 2 and the tension pendulum shaft 3 are the same.

[0041] The rotating shaft 2 is rotatably mounted on the fixed frame 1 through a bearing, and the first rotating shaft 21 and the second rotating shaft 22 are symmetrically arranged on both sides of the tension pendulum shaft 3, so that the force of the film material 6 on the tension pendulum shaft 3 is vertically downward along the limiting groove, so that the stress of the tension pendulum shaft 3 is closer to the tension of the film material 6, and the accuracy of the auxiliary detection is improved; and the rotating shaft and the tension pendulum shaft 3 with the same diameter facilitate the processing of the structure and reduce the cost. The length of the rotating shaft 2 and the tension pendulum shaft 3 can be replaced and adjusted according to the width of the film material 6, and the use is flexible.

[0042] Specifically, as shown in Figure 3 The side of the fixed frame 1 away from the rotating shaft 2 is provided with a holding handle. The holding handle is provided with a display screen 7. And the holding handle is also provided with a battery compartment 8. The holding handle facilitates the movement of the device by personnel, and the display screen 7 is used to display the detection condition, and the battery compartment 8 supplies power to the device.

[0043] The specific working principle of the auxiliary detection device is:

[0044] After the device is powered on, the film material 6 is sequentially threaded through the lower end of the first rotating shaft 21, the upper end of the tension pendulum shaft 3, and the lower end of the second rotating shaft 22, and the position of the auxiliary detection device is adjusted so that the film material 6 is perpendicular to the rotating shaft 2 and the tension pendulum shaft 3. Slowly run the equipment, tighten the film material 6, the tension pendulum shaft 3 is close to the rotating shaft 2, the spring is stretched and changes the resistance value of the strain sensor, and the stress of the tension pendulum shaft 3, that is, the tension of the film material 6, can be determined through the change of the resistance value, and the tension of the film material 6 can be detected through the display screen 7.

[0045] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor based on the concept of the present application. Therefore, any technical solutions obtained by logical analysis, reasoning or limited experiments based on the existing technology within the concept of the present application shall be within the protection scope defined by the claims.

Claims

1. A hand-held thin film tension assist detection device, characterized by, The fixed frame (1), the rotating shaft (2), the tension swing shaft (3), the sensor (4) and the elastic member (5) are included. The fixed frame (1) is provided with a limiting groove (11), the sensor (4) is fixed at one end of the fixed frame (1), one end of the elastic member (5) is connected with the sensor (4), and the other end is connected with the tension swing shaft (3); the tension swing shaft (3) is rotatably installed on the fixed frame (1) and located in the limiting groove (11); the rotating shaft (2) is rotatably fixed on the fixed frame (1); the tension swing shaft (3) and the rotating shaft (2) are parallel to each other; and the rotating shaft (2) is located on the side of the tension swing shaft (3) away from the sensor (4).

2. The handheld thin film tension aid detection device of claim 1, wherein, The sensor (4) is a strain sensor.

3. The handheld thin film tension aid detection device of claim 1, wherein, The elastic member (5) is a spring.

4. The handheld thin film tension aid detection device of claim 1, wherein, The rotating shaft (2) includes a first rotating shaft (21) and a second rotating shaft (22), and the first rotating shaft (21) and the second rotating shaft (22) are distributed on both sides of the tension swing shaft (3).

5. A hand-held thin film tension aid detection device according to claim 4, wherein, The first rotating shaft (21) and the second rotating shaft (22) are symmetrically distributed on both sides of the tension swing shaft (3).

6. The handheld thin film tension aid detection device of claim 1, wherein, The rotating shaft (2) and the tension swing shaft (3) have the same diameter.

7. The handheld thin film tension aid detection device of claim 1, wherein, The fixed frame (1) includes a first fixed block and a second fixed block, and the first fixed block and the second fixed block are respectively fixed at both ends of the rotating shaft (2).

8. The handheld thin film tension aid detection device of claim 1, wherein, The side of the fixed frame (1) away from the rotating shaft (2) is provided with a holding handle.

9. A hand-held thin film tension aid detection device according to claim 8, wherein, The holding handle is provided with a display screen (7).

10. The handheld thin film tension aid detection device of claim 9, wherein, The holding handle is also provided with a battery compartment (8).

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