Sheath tension bracket

Abstract

The utility model discloses a sheath tension bracket, and relates to the field of sheath wire production, the sheath tension bracket comprises a guide wheel rod, a support frame and a tension adjusting mechanism, the tension adjusting mechanism comprises a cylinder, a pressure regulating valve and a tension sensor; a first guide wheel is fixedly mounted on the support frame; a second guide wheel is arranged on the guide wheel rod; anti-winding guide grooves are formed in the wheel surfaces of the first guide wheel and the second guide wheel, the tension of the cable is dynamically adjusted in real time through closed-loop control of the air cylinder, the pressure adjusting valve and the tension sensor, and the fluctuation rate is reduced; a double-acting cylinder is linked with a proportional pressure regulating valve-PLC (Programmable Logic Controller), so that the quick response of a guide wheel rod and the self-adaptive adjustment of the pressure along with the linear speed are realized; the V-shaped guide groove and the nylon gasket effectively prevent the cable from deviating, friction damage is reduced, the problem that the sheath tension bracket cannot be subjected to dynamic tension adjustment under high-speed continuous production is solved, and the sheath tension bracket can be subjected to dynamic tension adjustment under high-speed continuous production.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sheath wire production, in particular to a sheath tension frame. BACKGROUND

[0002] In the specific application of material processing production line, the unwinding device as a key component is responsible for gradually unwinding and transmitting the material in roll form to the subsequent processing equipment, and its performance directly affects the continuity and stability of the processing process. The traditional unwinding device usually includes an unwinding frame, a guide wheel and a tension control system. The unwinding frame is usually made of metal material and has a certain rigidity and stability, and a fixed base is arranged at the bottom. The surface of the guide wheel is smooth, and the guide wheel is connected with the unwinding frame through a bearing to reduce friction and realize free rotation.

[0003] In the field of sheath wire production, tension control is a key link to ensure the quality and production efficiency of the wire. The traditional sheath tension frame device generally adopts a counterweight type adjusting mechanism, which includes a guide rod, a counterweight and a support frame. Specifically, the counterweight is connected with the guide rod through a rope or a chain, and the tension of the sheath wire is adjusted by increasing or decreasing the weight of the counterweight. However, the existing technology has significant defects. Each time the tension is adjusted, the counterweight needs to be manually increased or decreased, which is tedious and time-consuming, and is difficult to adapt to high-speed continuous production requirements. The counterweight is easy to deviate due to vibration or inertia during equipment operation, resulting in tension fluctuation, affecting the uniformity of the sheath wire and the quality of the finished product.

[0004] Therefore, we need a sheath tension frame to solve the problem that the sheath tension frame cannot dynamically adjust the tension under high-speed continuous production, so that the sheath tension frame can dynamically adjust the tension under high-speed continuous production. Content of the utility model

[0005] The purpose of the present application is to solve the problem that the sheath tension frame cannot dynamically adjust the tension under high-speed continuous production. In order to solve the above problem, the present application provides a sheath tension frame, which can dynamically adjust the tension under high-speed continuous production.

[0006] To achieve the above purpose, the embodiments of the present application adopt the following technical solutions: a guide rod, a support frame and a tension adjusting mechanism, the tension adjusting mechanism includes a gas cylinder, a pressure regulating valve and a tension sensor; the piston rod of the gas cylinder is hinged to the guide rod, the pressure regulating valve is connected to the gas cylinder through a gas circuit, and is used for dynamically adjusting the output pressure of the gas cylinder; the tension sensor is arranged at the position where the guide rod cooperates with the cable, and is electrically connected with the pressure regulating valve, feeds back the cable tension to the pressure regulating valve, and forms a closed loop control; the first guide wheel is fixedly installed on the support frame, the second guide wheel is arranged on the guide rod, the axes of the first guide wheel and the second guide wheel are parallel and located in the same vertical plane, and the cable passes through the channel formed between the first guide wheel and the second guide wheel; the wheel surface of the first guide wheel and the second guide wheel is provided with an anti-winding guide groove for limiting the lateral deviation of the cable.

[0007] In the technical solution, the cable tension is dynamically adjusted in real time to reduce the fluctuation rate through closed-loop control of the air cylinder, the pressure regulating valve and the tension sensor; the dual-acting air cylinder and the proportional pressure regulating valve are connected with the PLC to realize fast response of the guide rod and self-adaptive adjustment of the pressure according to the line speed; the V-shaped guide groove and the nylon lining effectively prevent the cable from deviating and reduce the friction damage, thereby solving the problem that the sheath tension frame cannot dynamically adjust the tension in high-speed continuous production.

[0008] Further, according to the embodiment of the application, the air cylinder is a dual-acting air cylinder, the two air chambers are controlled by independent pressure regulating valves, an exhaust valve is arranged on the air path to improve the lifting response speed of the guide rod.

[0009] Further, according to the embodiment of the application, the pressure regulating valve is a proportional pressure regulating valve, the input end is connected with the air source, the output end is communicated with the air cylinder through the electromagnetic valve, the control end of the electromagnetic valve is connected with the PLC controller, and the pressure set value is adjusted in real time according to the cable conveying speed.

[0010] Further, according to the embodiment of the application, the cross section of the guide groove is V-shaped, the inclination angle is 30°-45°, and the groove bottom is provided with a nylon lining.

[0011] Further, according to the embodiment of the application, one side of the guide rod is rigidly connected with the support frame through the fixed support.

[0012] Further, according to the embodiment of the application, an angle scale is arranged at the connection between the guide rod and the fixed support, the swing angle range of the guide rod is marked on the scale, and the scale is used to assist manual adjustment of the initial position of the tension.

[0013] Further, according to the embodiment of the application, a plurality of limiting portions are arranged on the swing path of the guide rod.

[0014] Further, according to the embodiment of the application, the support frame is in a rectangular frame structure.

[0015] Further, according to the embodiment of the application, the bottom of the air cylinder is fixed on the support frame.

[0016] Further, according to the embodiment of the application, the support frame is in a rectangular hollow structure.

[0017] Compared with the prior art, the application has the following beneficial effects: the application reduces the fluctuation rate by real-time dynamic adjustment of the cable tension through closed-loop control of the air cylinder, pressure regulating valve and tension sensor; the double-acting air cylinder and proportional pressure regulating valve-PLC linkage are adopted to realize rapid response of the guide wheel rod and self-adaptive adjustment of the pressure with the wire speed; the V-shaped guide groove and nylon liner effectively prevent the cable from deviating and reduce friction damage, solving the problem that the sheath tension frame cannot perform dynamic tension adjustment under high-speed continuous production, so that the sheath tension frame can perform dynamic tension adjustment under high-speed continuous production. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described below in combination with the drawings and examples.

[0019] Figure 1 is an axonometric view of a sheath tension frame.

[0020] Figure 2 is a front view of a sheath tension frame.

[0021] Figure 3 is a top view of a sheath tension frame.

[0022] Figure 4 is a right view of the improved gripper.

[0023] Figure 5 is an "A-A" sectional view of Figure 4

[0024] Figure 6 is a front view of the improved guide wheel rod.

[0025] In the drawings

[0026] 1, guide wheel rod 11, front section rod body 12, rear section rod body

[0027] 13, guide rail 14, screw rod 15, second guide wheel

[0028] 2, support frame 21, first guide wheel 3, tension adjustment mechanism

[0029] 31, air cylinder 32, pressure regulating valve 33, tension sensor

[0030] 4, cable 5, limiting part 6, dial

[0031] 7, fixed support DETAILED DESCRIPTION

[0032] ​In order to make the purpose, technical scheme of the utility model clear, complete description, and the advantage is more clear and obvious, the following will combine the drawings to further explain the utility model embodiment. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all embodiments, only to explain the utility model embodiments, and not used to limit the utility model embodiments, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the scope of the utility model protection.

[0033] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied 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 utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the utility model, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by referring to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that these embodiments can not be limited to these specific details in practice for ordinary skilled in the art. In some examples, well-known methods and devices are not described in detail to avoid unnecessary difficulty in understanding these embodiments. In addition, all embodiments can be used in combination with each other.

[0036] Embodiment one: as Figures 1-5As shown, a sheath tension frame includes: the sheath tension frame includes a guide wheel rod 1, a support frame 2 and a tension adjusting mechanism 3, the tension adjusting mechanism 3 is composed of a gas cylinder 31, a pressure regulating valve 32 and a tension sensor 33, the piston rod of the gas cylinder 31 is hinged with the guide wheel rod 1, the pressure regulating valve 32 controls the pressure of the gas cylinder 31 through a gas circuit, the tension sensor 33 detects the tension signal of the matching position of the guide wheel rod 1 and the cable 4 in real time and feeds back to the pressure regulating valve 32, forming a closed loop control, the support frame 2 fixes a first guide wheel 21, the guide wheel rod 1 is provided with a second guide wheel 15, the axis of the first guide wheel 21 and the second guide wheel 15 is coplanar to form a cable 4 passing channel, the wheel surface is provided with a V-shaped anti-winding guide groove, the V-shaped guide groove limits the lateral deviation of the cable 4, the deviation is ≤1mm, and the risk of wire breakage is reduced.

[0037] The gas cylinder 31 is a double-acting gas cylinder 31, and the gas cavities at both ends are controlled by independent pressure regulating valves 32, an exhaust valve is additionally arranged in the gas circuit, the two gas cavities are independently pressure-regulated, linear adjustment of tension increase and decrease is realized, and the adjustment accuracy is ±1%.

[0038] The pressure regulating valve 32 is a proportional pressure regulating valve 32, the input end is connected with a gas source, the output end is connected with the gas cylinder 31 through a three-position five-way electromagnetic valve, and the PLC controller calculates the pressure set value in real time according to the line speed.

[0039] The guide groove section is V-shaped, the inclination angle is 35°, the groove bottom is embedded with a nylon pad, the pad thickness is 2mm, the friction coefficient is ≤0.1, the surface friction damage rate of the cable 4 is reduced, and the V-shaped groove forces the cable 4 to run in the middle to prevent the cable 4 from deviating.

[0040] One side of the guide wheel rod 1 is rigidly connected with the support frame 2 through a fixed support 7, two limiting parts 5 are arranged on the swing path of the guide wheel rod 1, and excessive swing of the guide wheel rod 1 is prevented.

[0041] The support frame 2 is a rectangular hollow frame, the inside is filled with polyurethane foam, and the bottom is provided as a damping base; the gas cylinder 31 is fixed to the platform of the support frame 2 through a clamp.

[0042] An angle scale disc 6 is arranged at the hinged position of the guide wheel rod 1 and the fixed support 7, the scale disc 6 is marked with the swing angle range of the guide wheel rod 1, and is used for assisting manual adjustment of the initial position of the tension.

[0043] Through the closed loop control of the gas cylinder 31, the pressure regulating valve 32 and the tension sensor 33, the tension of the cable 4 is dynamically adjusted in real time, and the fluctuation rate is reduced; the double-acting gas cylinder 31, the proportional pressure regulating valve 32 and the PLC linkage are adopted, the guide wheel rod 1 realizes rapid response, and the pressure is adaptively adjusted according to the line speed; the V-shaped guide groove and the nylon pad effectively prevent the cable 4 from deviating, reduce friction damage, solve the problem that the sheath tension frame cannot dynamically adjust the tension under high-speed continuous production, and enable the sheath tension frame to dynamically adjust the tension under high-speed continuous production.

[0044] Example two: asFigure 6 As shown, on the basis of embodiment one, the guide wheel rod 1 is further improved, including: the guide wheel rod 1 is divided into a front rod body 11 and a rear rod body 12, and the two segments are connected through a guide rail 13.

[0045] A bidirectional screw rod 14 is arranged on the sleeve, the screw rod 14 has opposite screw threads at two ends, and is engaged with threaded holes of the front rod body 11 and the rear rod body 12 respectively. One end of the screw rod 14 is connected with a hand wheel or a servo motor, and when rotating, drives the two rod bodies to move synchronously, so as to realize adjustment of the left and right positions of the second guide wheel 15.

[0046] The segmented structure of the guide wheel rod 1 can further adjust the position of the second guide wheel 15, and according to the working condition, the tension amplitude can be adjusted in time, so that the sheath tension frame can dynamically adjust the tension under high-speed continuous production.

[0047] Embodiment three: as shown in Figures 1-6 On the basis of embodiments 1-2, the embodiment further provides a use method of the sheath tension frame, including:

[0048] The base of the support frame 2 is fixed on the production line base by bolts, and the support frame 2 is ensured to be horizontal.

[0049] The cable 4 is sequentially threaded through the first guide wheel 21 of the support frame 2 and the second guide wheel 15 of the guide wheel rod 1, and the cable 4 is ensured to be embedded in the V-shaped guide groove.

[0050] The initial angle of the guide wheel rod 1 is adjusted, the swing range (0°-30°) is set through the angle scale disc 6, and the locking screw of the locking support 7 is locked and fixed.

[0051] The gas source is connected to the input end of the proportional pressure regulating valve 32, the output end is connected to the two end air chambers of the double-acting air cylinder 31 through a three-position five-way electromagnetic valve, and the specifications (wire diameter, material) of the cable 4 and the target tension value are input in the PLC controller.

[0052] The tension sensor 33 is started, the tension of the cable 4 is detected in real time and fed back to the pressure regulating valve 32.

[0053] The PLC automatically adjusts the pressure of the air cylinder 31 according to the speed of the cable 4, the guide wheel rod 1 dynamically rises and falls with the change of the tension, and the segmented structure of the guide wheel rod 1 supports stepless adjustment of the left and right positions of the second guide wheel 15.

[0054] Although the above describes the specific embodiments of the present application for the purpose of enabling those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments, and for those skilled in the art, all application creations utilizing the concept of the present application are within the protection scope of the present application as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims.

Claims

1. A sheath tensioner, comprising: The guide wheel rod, support frame, and tension adjustment mechanism are characterized in that the tension adjustment mechanism includes a cylinder, a pressure regulating valve, and a tension sensor. The piston rod of the cylinder is hinged to the guide wheel rod, and the pressure regulating valve is connected to the cylinder through an air circuit to dynamically adjust the output pressure of the cylinder; The tension sensor is located at the position where the guide wheel rod meets the cable and is electrically connected to the pressure regulating valve, feeding back the cable tension to the pressure regulating valve to form a closed-loop control. A first guide wheel is fixedly installed on the support frame, and a second guide wheel is provided on the guide wheel rod. The axes of the first guide wheel and the second guide wheel are parallel and located in the same vertical plane, and a cable passage is formed between them. The first guide wheel and the second guide wheel are provided with anti-tangle guide grooves on their wheel surfaces to limit the lateral deviation of the cable.

2. The sheath tensioner according to claim 1, characterized in that, The cylinder is a double-acting cylinder, with each end chamber controlled by an independent pressure regulating valve. An exhaust valve is provided in the air circuit to improve the lifting response speed of the guide wheel rod.

3. The sheath tensioner according to claim 1, characterized in that, The pressure regulating valve is a proportional pressure regulating valve. Its input end is connected to the air source, and its output end is connected to the cylinder through a solenoid valve. The control end of the solenoid valve is connected to a PLC controller, which is used to adjust the pressure set value in real time according to the cable conveying speed.

4. A sheath tensioner according to claim 1, characterized in that, The guide groove has a V-shaped cross-section with an inclination angle of 30°-45°, and the bottom of the groove is provided with a nylon pad.

5. A sheath tensioner according to claim 1, characterized in that, One side of the guide wheel rod is rigidly connected to the support frame via a fixed bracket.

6. A sheath tensioner according to claim 5, characterized in that, An angle scale is provided at the hinge joint between the guide wheel rod and the fixed bracket. The scale is marked with the swing angle range of the guide wheel rod, which is used to assist in the manual adjustment of the initial tension position.

7. A sheath tensioner according to claim 1, characterized in that, The guide wheel rod has multiple limiting parts along its swing path.

8. A sheath tensioner according to claim 1, characterized in that, The support frame has a rectangular frame structure.

9. A sheath tensioner according to claim 1, characterized in that, The bottom of the cylinder is fixed to the support frame.

10. A sheath tensioner according to claim 1, characterized in that, The support frame has a rectangular hollow cross-section.

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