Bundling belt tensioning force testing device

Abstract

The utility model provides a strapping tape tensioning force testing device. The device comprises a base, a fixed roller assembly, a sliding block guide rail pair, a floating roller assembly and a force transducer, wherein the fixed roller assembly is arranged at one end part of the base; the sliding block guide rail pair is installed at the other end of the base, and the sliding direction of the sliding block guide rail pair is close to or away from the fixed roller assembly. The floating roller assembly is fixedly connected with a sliding block of the sliding block guide rail pair; the two ends of the force transducer are respectively connected with the fixed roller assembly and the floating roller assembly, and the mounting centers of the fixed roller assembly, the floating roller assembly and the force transducer are positioned on the same straight line. By means of the device, the tensioning force borne by the bundling belt during bundling and packaging can be conveniently obtained. The device is portable, small and exquisite, excellent in performance, and capable of conveniently obtaining key parameters such as tensioning force applied to the binding belt and change conditions in the binding and packaging process and reflecting the mechanical property of the used binding belt at the same time.

Description

Technical Field

[0001] This utility model relates to a force testing device, specifically a strap tension force testing device. Background Technology

[0002] In the field of bundling and packaging, the tightening force is generally used to characterize the securing force applied to items during the bundling process, and its magnitude directly affects the packaging effect. Appropriate tightening force ensures that items will not loosen or scatter during transportation and storage, thus protecting the integrity and safety of the items. Insufficient tightening force will result in loose bundling, affecting the securing effect; excessive tightening force may cause the straps to break, resulting in the bundle coming apart.

[0003] Adjusting the tension force to an appropriate value varies depending on the machine model or baling tool. For example, the tension force of a fully automatic baler can be adjusted via a dial on the machine core, while the tension force of a pneumatic baler can be controlled via a flow valve. Since the tension force is achieved by the baler or baling tool applying tension to the strapping, a strapping tension testing device is needed. Utility Model Content

[0004] In order to address the problems and needs in the background art, this utility model provides a strapping tension testing device, which can be used to test the maximum force that a baler or baling tool can generate and act on the strapping, as well as its adjustment capability.

[0005] The technical solution of this utility model is as follows:

[0006] A strap tension testing device includes a base; a fixed roller assembly mounted at one end of the base; a slider guide pair mounted at the other end of the base, the slider guide pair sliding towards or away from the fixed roller assembly; a floating roller assembly fixedly connected to the slider of the slider guide pair; and a force sensor, both ends of which are connected to the fixed roller assembly and the floating roller assembly respectively, the mounting centers of the fixed roller assembly, the floating roller assembly, and the force sensor being located on the same straight line.

[0007] The strap tension testing device also includes a display instrument, which is connected to the force sensor.

[0008] The fixed roller assembly includes a fixed roller, a fixed roller bearing, and a fixed roller shaft. Two fixed roller bearings are arranged vertically and spaced apart in one end of the base. The fixed roller and the fixed roller shaft are coaxially fixed. Both ends of the fixed roller shaft are installed in the two fixed roller bearings.

[0009] The fixed roller is provided with an outwardly extending protrusion for limiting the strapping.

[0010] The width of the fixed roller is greater than the width of the strap.

[0011] The floating roller assembly includes a roller mounting base, a floating roller, a floating roller bearing, and a floating roller shaft. The roller mounting base is fixedly connected to the slider of the slider guide pair. One end of the roller mounting base near the force sensor is fixedly connected to the force sensor. A floating roller bearing is installed in the end of the roller mounting base near the force sensor. The two floating roller bearings are arranged vertically at intervals. The floating roller and the floating roller shaft are coaxially fixedly connected. Both ends of the floating roller shaft are installed in the two floating roller bearings.

[0012] The floating roller is provided with an outwardly extending protruding edge for limiting the strapping.

[0013] The width of the floating roller is greater than the width of the strap.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention utilizes tension force to characterize the maximum force and adjustability of a baling machine or baling tool, facilitating the acquisition of the tension force on the strapping during bundling and packaging. The device is portable, compact, and high-performing, not only easily obtaining key parameters and changes in tension force applied to the strapping during bundling and packaging, but also reflecting the mechanical properties of the strapping used. It has significant practical application value in performance testing of various baling machines, baling tools, and strapping, and is particularly suitable for applications in the field of automatic baling machines and baling tools using steel strapping, PE strapping, and other packaging materials. Attached Figure Description

[0016] Figure 1 This is an isometric view of a strap tension testing device.

[0017] In the diagram: 1. Base; 2. Fixed roller assembly; 3. Force sensor; 4. Sensor connection accessory; 5. Floating roller assembly; 6. Slider guide pair; 7. Display instrument; 8. Strapping. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. 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.

[0019] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] like Figure 1 As shown, the strap tension testing device proposed in this utility model includes a base 1, a fixed roller assembly 2, and the fixed roller assembly 2 is installed at one end of the base 1; it also includes a slider guide rail pair 6, which is installed at the other end of the base 1, and the sliding direction of the slider guide rail pair 6 is towards or away from the fixed roller assembly 2; it also includes a floating roller assembly 5, which is fixedly connected to the slider of the slider guide rail pair 6, and the floating function is achieved by the sliding of the slider. The rotation axis of the floating roller assembly 5 is perpendicular to the sliding direction of the slider guide rail pair 6; the base 1 is hollow inside to reserve the installation position of the force sensor and sensor connection accessories; it also includes a force sensor 3, the two ends of which are connected to the fixed roller assembly 2 and the floating roller assembly 5 respectively through corresponding sensor connection accessories 4. The installation center or force center of the fixed roller assembly 2, the floating roller assembly 5 and the force sensor 3 are located on the same straight line, and the center line of the slider guide rail pair 6 is also located on this straight line. It also includes a display instrument 7, which is connected to the force sensor 3 and is used to display the value of the force sensor 3. The strapping 8 is wrapped around the floating roller assembly 5 and the fixed roller assembly 2 in sequence. The strapping 8 is arranged at intervals with the base 1 and the force sensor 3, that is, there is no contact between them.

[0021] The fixed roller assembly 2 includes a fixed roller, a fixed roller bearing, and a fixed roller shaft. The two fixed roller bearings are arranged vertically and spaced apart in one end of the base 1. The fixed roller and the fixed roller shaft are coaxially fixed. The two ends of the fixed roller shaft are installed in the two fixed roller bearings, so that the fixed roller is embedded in one end of the base 1.

[0022] The fixed roller is provided with an outwardly extending 45-degree protrusion for limiting the strap 8, so that the strap 8 can be stably wound on the fixed roller.

[0023] The floating roller assembly 5 includes a roller mounting base, a floating roller, a floating roller bearing, and a floating roller shaft. The roller mounting base is fixedly connected to the slider of the slider guide pair 6. The end of the roller mounting base near the force sensor 3 is fixedly connected to the force sensor 3 through a corresponding sensor connection accessory 4. A floating roller bearing is installed in the end of the roller mounting base near the force sensor 3. The two floating roller bearings are arranged vertically at intervals. The floating roller and the floating roller shaft are coaxially fixed. The two ends of the floating roller shaft are installed in the two floating roller bearings, so that the floating roller is embedded in the roller mounting base.

[0024] The width of the fixed roller is slightly larger than the width of the strap 8. In this embodiment, the width of the fixed roller is 36mm, which is slightly wider than the measured strap width of 32mm.

[0025] The slider guide pair 6 will have a certain resistance when it moves, about 15N. The ratio of this resistance to the rated range of the force sensor 3 (49KN) is 0.3‰. The nonlinear error of the force sensor 3 is ±5‰. The overall measurement accuracy of the device is Class 1 or above (including Class 1).

[0026] The display instrument 7 is matched with the force sensor 3. The sampling frequency of the display instrument 7 is 1000 times / second, and the measurement error is ±5‰. The display instrument 7 has a zeroing function, and the displayed value can stabilize within 3 seconds.

[0027] When using the device, place it on the strapping tension testing frame of the baler or on the strapping tightening path of the baling tool, ensuring that the fixed roller, floating roller, and strapping are aligned. After securing the device, power it on and reset the reading on display instrument 7 to zero. Once preparation is complete, start the baler or baling tool, allowing the strapping to gradually tighten and grip the fixed and floating rollers. Record the instrument readings during this process until the entire test is completed. When measuring static data such as the maximum value, wait until the value displayed on display instrument 7 stabilizes before reading it. Because the tension force of the strapping is doubled during the tightening process, divide the recorded instrument reading by 2 to obtain the actual value.

Claims

1. A strap tension testing device, characterized in that, The system includes a base (1); a fixed roller assembly (2) installed at one end of the base (1); a slider guide pair (6) installed at the other end of the base (1), the slider guide pair (6) sliding towards or away from the fixed roller assembly (2); a floating roller assembly (5) fixedly connected to the slider of the slider guide pair (6); and a force sensor (3) with its two ends connected to the fixed roller assembly (2) and the floating roller assembly (5) respectively, the mounting centers of the fixed roller assembly (2), the floating roller assembly (5) and the force sensor (3) being located on the same straight line.

2. The strap tension testing device according to claim 1, characterized in that, It also includes a display instrument (7), which is connected to the force sensor (3).

3. The strap tension testing device according to claim 1, characterized in that, The fixed roller assembly (2) includes a fixed roller, a fixed roller bearing and a fixed roller shaft. The two fixed roller bearings are arranged vertically and spaced apart in one end of the base (1). The fixed roller and the fixed roller shaft are coaxially fixed. The two ends of the fixed roller shaft are installed in the two fixed roller bearings.

4. The strap tension testing device according to claim 3, characterized in that, The fixed roller is provided with an outwardly extending protrusion for limiting the strap (8).

5. The strap tension testing device according to claim 3, characterized in that, The width of the fixed roller is greater than the width of the strap (8).

6. The strap tension testing device according to claim 1, characterized in that, The floating roller assembly (5) includes a roller mounting base, a floating roller, a floating roller bearing, and a floating roller shaft. The roller mounting base is fixedly connected to the slider of the slider guide pair (6). One end of the roller mounting base near the force sensor (3) is fixedly connected to the force sensor (3). A floating roller bearing is installed in one end of the roller mounting base near the force sensor (3). The two floating roller bearings are arranged vertically at intervals. The floating roller and the floating roller shaft are coaxially fixed. The two ends of the floating roller shaft are installed in the two floating roller bearings.

7. The strap tension testing device according to claim 6, characterized in that, The floating roller is provided with an outwardly extending protruding edge for limiting the strap (8).

8. The strap tension testing device according to claim 6, characterized in that, The width of the floating roller is greater than the width of the strap (8).

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