A tension adjustment device

Abstract

The utility model discloses a kind of tension adjusting device, including assembly plate, controller, the outer surface side bottom of assembly plate is fixedly connected with electric lifting assembly, the movable end of electric lifting assembly is fixedly connected with pressure sensor, the detection end of pressure sensor is fixedly connected with movable plate, and controller is fixedly connected on the outer wall of one side of movable plate;The top of movable plate is fixedly connected with two cylinder bodies penetrating to bottom symmetrically.The utility model in, by setting back type electromagnet, metal seat, elastic sleeve rod and buffer assembly and other structures, realize the accurate control of tension when electric lifting assembly normal work, once motor or transmission mechanism fails, controller can cut off back type electromagnet power supply, release metal seat, make first guide wheel under the action of elastic sleeve rod and buffer assembly fast drop, automatic release wire tension, effectively avoid wire and break due to overpull, improve the reliability and security of device.

Description

Technical Field

[0001] This utility model relates to the field of tension adjustment technology, and in particular to a tension adjustment device. Background Technology

[0002] Maintaining constant tension is crucial for ensuring the quality and performance of wires during the manufacturing process. Current technologies often employ motor-driven tension adjustment devices, such as servo motors or stepper motors in conjunction with lead screw mechanisms, to improve tension control precision and automation.

[0003] However, such devices have the following drawbacks in wire production: their tension maintenance and adjustment functions are entirely handled by the motor and its transmission mechanism, lacking protective measures. If the motor or transmission mechanism malfunctions, the entire adjustment function will immediately fail. At this point, the device not only cannot continue to accurately control the tension, but may also be unable to release the tension due to motor self-locking or mechanism jamming, causing the wire to continuously bear excessive tensile force, making it extremely prone to breakage, resulting in production interruption and material loss.

[0004] A search revealed that Chinese patent CN222630727U discloses a tension adjustment device for cable production. This application uses the aforementioned tension adjustment method to adjust the tension of the cable, which has the aforementioned defects.

[0005] Therefore, further improvements are needed, and to this end, we propose a tension adjustment device. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tension adjustment device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a tension adjustment device, comprising an assembly plate and a controller, wherein an electric lifting assembly is fixedly connected to the bottom of one side of the outer surface of the assembly plate, a pressure sensor is fixedly connected to the movable end of the electric lifting assembly, the detection end of the pressure sensor is fixedly connected to the movable plate, and the controller is fixedly connected to the outer wall of one side of the movable plate. The top of the movable plate is symmetrically fixedly connected to two cylindrical bodies that extend to the bottom. The top of each of the two cylindrical bodies is fixedly connected to a U-shaped electromagnet. The bottom of each of the two U-shaped electromagnets is magnetically attached to a metal seat. Each of the two metal seats and the cylindrical body is equipped with an elastic sleeve rod. The top of each of the two elastic sleeve rods is equipped with a buffer assembly. The top of each of the two buffer assemblies is fixedly connected to a first bearing seat. The inner ring of the bearing inside each of the two first bearing seats is fixedly connected to a first connecting shaft. The connecting ends of each of the two first connecting shafts are detachably fixedly connected to a first guide wheel. Three auxiliary guide components are fixedly connected to one side of the outer surface of the assembly plate, and the three auxiliary guide components are offset from the two first guide wheels.

[0008] Furthermore, the electric lifting assembly includes two second bearing seats, and the seats of the second bearing seats are fixedly connected to the assembly plate. A motor is fixedly connected to the bottom of the seat of a single second bearing seat. A screw is fixedly connected to the drive end of the motor, and the screw is fixedly connected to the inner ring of the bearing built into the second bearing seat. A slide is threaded onto the outer surface of the screw, and the mounting end of the pressure sensor is fixedly installed on the top of the slide. This structure drives the screw to rotate through the motor, which is converted into linear motion of the slide, thereby providing stable and controllable lifting power and realizing tension adjustment.

[0009] Furthermore, both of the elastic sleeves include a sleeve body, and the cylinder is slidably sleeved on the outer surface of the sleeve body, and the metal seat is fixedly sleeved on the outer surface of the sleeve body. A first spring is fixedly connected between the bottom of the sleeve body and the cylinder. After the electromagnet is de-energized and released, the restoring force of the first spring can buffer the movement of the sleeve body.

[0010] Furthermore, both of the aforementioned buffer components include a guide rod, which is fixedly connected to the bottom of the first bearing housing. The sleeve body is slidably sleeved on the outer surface of the guide rod. A second spring is sleeved on the outer surface of the sleeve body, and the second spring is fixedly connected to the first bearing housing and the sleeve body. The second spring is used to buffer tension fluctuations during normal operation.

[0011] Furthermore, all three auxiliary guide components include a third bearing housing, and the seat of the third bearing housing is fixedly connected to the assembly plate. The inner ring of the bearing built into the third bearing housing is fixedly connected to a second connecting shaft. The second connecting shaft is detachably fixedly connected to a second guide wheel. Through the cooperation of multiple fixed-position second guide wheels and liftable first guide wheels, a defined wire threading path is formed.

[0012] Furthermore, two slide rails are symmetrically fixedly connected to one side of the outer surface of the assembly plate, and the slide rails are slidably connected to the seat of the first bearing seat. This structure provides guidance and support for the lifting and lowering movement of the first bearing seat and the first guide wheel, preventing them from deflecting or jamming during the movement.

[0013] The beneficial effects of this utility model are: In use, this invention, through the setting of a spiral electromagnet, a metal base, an elastic sleeve, and a buffer assembly, achieves accurate tension control when the electric lifting assembly is working normally. Once the motor or transmission mechanism malfunctions, the controller can cut off the power supply to the spiral electromagnet, release the metal base, and allow the first guide wheel to descend rapidly under the action of the elastic sleeve and buffer assembly, automatically releasing the tension of the wire, effectively preventing the wire from breaking due to overstretching, and improving the reliability and safety of the device. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the overall main structure of this utility model; Figure 3 This is a schematic diagram of the overall side view structure of this utility model; Figure 4 This is a partial cross-sectional view of the present invention.

[0016] The attached figures are labeled as follows: 1. Assembly plate; 2. Third bearing seat; 3. First guide wheel; 4. Slide rail; 5. Second bearing seat; 6. First bearing seat; 7. Second guide wheel; 8. Cylinder; 9. Motor; 10. Screw; 11. Controller; 12. Sleeve body; 13. Second spring; 14. Pressure sensor; 15. Movable plate; 16. First connecting shaft; 17. Second connecting shaft; 18. Guide rod; 19. U-shaped electromagnet; 20. Metal seat; 21. First spring; 22. Slide block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-4As shown, a tension adjustment device is disclosed, comprising an assembly plate 1 and a controller 11. An electric lifting assembly is fixedly connected to the bottom of one side of the outer surface of the assembly plate 1. A pressure sensor 14 is fixedly connected to the movable end of the electric lifting assembly. The pressure sensor 14 is a VLC-VU93 model. The detection end of the pressure sensor 14 is fixedly connected to a movable plate 15. The controller 11 is fixedly connected to the outer wall of one side of the movable plate 15. The electric lifting assembly includes two second bearing seats 5, and the seats of the second bearing seats 5 are fixedly connected to the assembly plate 1. A motor 9 is fixedly connected to the bottom of the seat of a single second bearing seat 5. The motor 9 is an 86 series stepper motor. A screw 10 is fixedly connected to the drive end of the motor 9. The screw 10 is fixedly connected to the inner ring of the bearing built into the second bearing seat 5. A slide 22 is threaded onto the outer surface of the screw 10. The mounting end of the pressure sensor 14 is fixedly mounted on the top of the slide 22. The thread helix angle of the screw 10 is smaller than the friction angle, which gives the screw 10 a self-locking capability, preventing it from shifting due to vibration or load.

[0019] Two cylindrical bodies 8, extending to the bottom, are symmetrically fixedly connected to the top of the movable plate 15. A loop-shaped electromagnet 19 is fixedly connected to the top of each of the two cylindrical bodies 8. A metal seat 20 is magnetically attached to the bottom of each of the two loop-shaped electromagnets 19. Both metal seats 20 and the cylindrical bodies 8 are fitted with elastic sleeves. Each elastic sleeve includes a sleeve body 12, with the cylindrical body 8 slidably fitted onto the outer surface of the sleeve body 12. The metal seat 20 is fixedly fitted onto the outer surface of the sleeve body 12. A first spring 21 is fixedly connected between the bottom of the sleeve body 12 and the cylindrical body 8. When the loop-shaped electromagnet 19 is energized, it generates a strong magnetic force, firmly attracting the metal seat 20 and ensuring overall rigidity during normal operation. When the power is off, the magnetic force disappears instantly, providing conditions for emergency release. The metal seat 20 is made of DT4 electrical pure iron.

[0020] Both elastic sleeve rods are equipped with buffer components at their tops, and both buffer components are fixedly connected to the tops of the first bearing seat 6. Both buffer components include a guide rod 18, which is fixedly connected to the bottom of the seat of the first bearing seat 6. The sleeve rod body 12 is slidably sleeved on the outer surface of the guide rod 18. A second spring 13 is sleeved on the outer surface of the sleeve rod body 12, and the second spring 13 is fixedly connected to the seat of the first bearing seat 6 and the sleeve rod body 12. The first spring 21 and the second spring 13 are both made of 60Si2Mn spring steel.

[0021] Two slide rails 4 are symmetrically fixedly connected to one side of the outer surface of the assembly plate 1, and the slide rails 4 are slidably connected to the seat of the first bearing housing 6. The inner rings of the bearings built into the two first bearing housings 6 are fixedly connected to the first connecting shafts 16. The connecting ends of the two first connecting shafts 16 are detachably fixedly connected to the first guide wheels 3. The first connecting shafts 16 and the first guide wheels 3 are fixed by flange bolts, which facilitates the replacement of the first guide wheels 3.

[0022] Three auxiliary guide components are fixedly connected to one side of the outer surface of the assembly plate 1. The three auxiliary guide components are offset from the two first guide wheels 3. Each of the three auxiliary guide components includes a third bearing seat 2. The seat of the third bearing seat 2 is fixedly connected to the assembly plate 1. The inner ring of the bearing built into the third bearing seat 2 is fixedly connected to a second connecting shaft 17. The second connecting shaft 17 is detachably fixedly connected to a second guide wheel 7. The second connecting shaft 17 and the second guide wheel 7 are fixed together by flange bolts, which facilitates the replacement of the second guide wheel 7.

[0023] The controller 11 is electrically connected to the pressure sensor 14, the loop electromagnet 19, and the motor 9. The controller 11 can be a PLC (such as Siemens S7-1200 series), which has the advantages of high integration and strong programmability. It can process pressure signals and control the movement of the motor 9 and the loop electromagnet 19 to achieve automated control.

[0024] Working Principle: Under normal operating conditions, the controller 11 controls the operation of the electric lifting assembly according to the preset tension value. Specifically, the motor 9 starts, driving the screw 10 to rotate, which in turn moves the slide 22 up and down along the screw 10. The slide 22 is connected to the movable plate 15 through the pressure sensor 14, thereby driving the movable plate 15 to rise and fall. The movable plate 15 drives the two first guide wheels 3 to rise and fall through the cylinder 8, the loop electromagnet 19, the elastic sleeve rod, the buffer assembly, the first bearing seat 6, and the first connecting shaft 16. The wire passes around the first guide wheel 3 and the second guide wheel 7 in the auxiliary guide assembly, forming a specific wire path. The pressure sensor 14 detects the pressure (i.e., tension) of the wire on the first guide wheel 3 in real time and feeds the signal back to the controller 11. The controller 11 compares the measured tension with the set value, and adjusts the direction and speed of the motor 9 to adjust the height of the movable plate 15, thereby changing the wrap angle or tightness of the wire and achieving accurate closed-loop control of the tension.

[0025] During adjustment, the buffer assembly smooths out tension fluctuations, and the second spring 13 in the buffer assembly cushions the first bearing seat 6 via the guide rod 18. When the wire tension changes instantaneously (such as during start-up, stop, or speed fluctuation), the first guide wheel 3 can make a slight displacement by compressing the second spring 13 to absorb the impact and prevent sudden tension changes from damaging the wire. The slide rail 4 ensures that the first bearing seat 6 moves in a straight line, improving stability.

[0026] When the electric lifting assembly (such as motor 9 or screw 10) malfunctions, the device activates protective measures. Upon detecting an anomaly (such as motor 9 jamming, a sudden and significant increase in pressure, or signal loss), the controller 11 immediately cuts off the power to the loop electromagnet 19. The loop electromagnet 19 demagnetizes, releasing the metal seat 20. Under the influence of gravity and the tension of the wire, the metal seat 20 drives the sleeve body 12 downwards, compressing the first spring 21, causing the entire first guide wheel 3 assembly to descend rapidly. This significantly reduces the tension of the wire, preventing it from breaking due to excessive tension caused by the device jamming. Simultaneously, the second spring 13 in the buffer assembly assists in buffering the descent process.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tension regulating device comprising an assembly plate (1), a controller (11), characterized in that: An electric lifting assembly is fixedly connected to the bottom of one side of the outer surface of the assembly plate (1). A pressure sensor (14) is fixedly connected to the movable end of the electric lifting assembly. A movable plate (15) is fixedly connected to the detection end of the pressure sensor (14). A controller (11) is fixedly connected to the outer wall of one side of the movable plate (15). The top of the movable plate (15) is symmetrically fixedly connected to two cylindrical bodies (8) that extend to the bottom. The top of the inner part of each of the two cylindrical bodies (8) is fixedly connected to a loop electromagnet (19). The bottom of each of the two loop electromagnets (19) is magnetically attracted to a metal seat (20). Each of the two metal seats (20) and the cylindrical body (8) is equipped with an elastic sleeve rod. The top of each of the two elastic sleeve rods is equipped with a buffer assembly. The top of each of the two buffer assemblies is fixedly connected to a first bearing seat (6). The inner ring of the bearing built into each of the two first bearing seats (6) is fixedly connected to a first connecting shaft (16). The connecting ends of each of the two first connecting shafts (16) are detachably fixedly connected to a first guide wheel (3). Three auxiliary guide components are fixedly connected to one side of the outer surface of the assembly plate (1), and the three auxiliary guide components are misaligned with the two first guide wheels (3).

2. A tension adjustment device according to claim 1, characterised in that: The electric lifting assembly includes two second bearing seats (5), and the seat body of the second bearing seat (5) is fixedly connected to the assembly plate (1). A motor (9) is fixedly connected to the bottom of the seat body of the single second bearing seat (5). A screw (10) is fixedly connected to the drive end of the motor (9), and the screw (10) is fixedly connected to the inner ring of the bearing built into the second bearing seat (5). A slide (22) is threaded onto the outer surface of the screw (10), and the mounting end of the pressure sensor (14) is fixedly installed on the top of the slide (22).

3. A tension adjustment device according to claim 1, wherein: Both of the elastic sleeves include a sleeve body (12), and the cylinder (8) is slidably sleeved on the outer surface of the sleeve body (12), and the metal seat (20) is fixedly sleeved on the outer surface of the sleeve body (12). A first spring (21) is fixedly connected between the bottom of the sleeve body (12) and the cylinder (8).

4. A tension adjustment device according to claim 3, wherein: Both of the buffer components include a guide rod (18), and the guide rod (18) is fixedly connected to the bottom of the seat of the first bearing seat (6), and the sleeve body (12) is slidably sleeved on the outer surface of the guide rod (18). A second spring (13) is sleeved on the outer surface of the sleeve body (12), and the second spring (13) is fixedly connected to the seat of the first bearing seat (6) and the sleeve body (12).

5. A tension adjustment device as claimed in claim 1, wherein: All three auxiliary guide components include a third bearing housing (2), and the seat of the third bearing housing (2) is fixedly connected to the assembly plate (1). The inner ring of the bearing built into the third bearing housing (2) is fixedly connected to a second connecting shaft (17), and the second connecting shaft (17) is detachably fixedly connected to a second guide wheel (7).

6. A tension adjustment device according to claim 1, wherein: Two slide rails (4) are symmetrically fixedly connected to one side of the outer surface of the assembly plate (1), and the slide rails (4) are slidably connected to the seat of the first bearing seat (6).

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