Servo tensioner with thread loosening function

Abstract

The servo tensioner with the thread loosening function comprises a tension motor plate, a servo tensioner body is fixedly installed on the rear side of the tension motor plate, a horizontal sliding groove is formed in the top of the tension motor plate, the rear side of the tension motor plate is rotationally connected with a two-way lead screw located on the rear side of the horizontal sliding groove, and the two-way lead screw is fixedly connected with the servo tensioner body. Limiting sliding grooves located in the two sides of the servo tensioner are formed in the tension motor plate, a tension wheel is fixedly installed at the output end of the servo tensioner, the two-way lead screw is connected with a moving block in a penetrating and threaded mode, an adjusting knob is fixedly installed at one end of the two-way lead screw, and the front face of the moving block is rotationally connected with an expansion wheel. A pressing roller is slidably arranged in the limiting sliding groove, and the expansion wheel, the pressing roller and the tension wheel are in transmission connection with a pressing belt. And through the pressing belt and the tension wheel, the wire is wrapped, the friction force is increased, the wire is prevented from sliding, and meanwhile the conveying torque of the wire can be adjusted through the tension wheel.

Description

Technical Field

[0001] This utility model relates to the field of servo tensioner technology, specifically a servo tensioner with a wire loosening function. Background Technology

[0002] A tension controller is a system developed using a microcontroller or some embedded devices and peripheral circuits. It is a control instrument that can directly set the required tension value, and then directly input the signal from the tension sensor (usually at the millivolt level) as the tension feedback value. After comparing the signal and obtaining the deviation, the signal is input to a PID controller for processing, and finally output to the peripheral actuator for control, so as to achieve the goal of minimizing the deviation and maximizing the system response.

[0003] Existing Chinese patent CN215478896U discloses a servo tensioner with a loosening function, including a tension base plate, a tension motor plate, and a cylinder limit lock seat. A tension wheel is movably connected to the upper right side of the tension motor plate, and a felt assembly is movably connected to the lower right side of the tension motor plate. The thread passing through the tension wheel also provides a torque, and this torque value is directly proportional to the output torque value of the servo tensioner. Therefore, the output torque value of the servo tensioner is directly proportional to the tension value of the output thread. Thus, when the servo tensioner is at a fixed value, the output thread tension value is also fixed, achieving a stable tension effect.

[0004] However, its tension wheel only uses the O-ring to prevent slippage, and the friction between the O-ring and the line is sufficient to meet the anti-slip requirements of the tension wheel's torque generation.

[0005] Therefore, we propose a servo tensioner with a wire loosening function. Utility Model Content

[0006] The purpose of this invention is to provide a servo tensioner with a loosening function to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a servo tensioner with a loosening function, comprising a tension motor plate, a servo tensioner fixedly mounted on the rear side of the tension motor plate, a horizontal slide groove on the top of the tension motor plate, a bidirectional lead screw rotatably connected to the rear side of the tension motor plate and located behind the horizontal slide groove, a limiting slide groove on both sides of the tension motor plate, a tension wheel fixedly mounted on the output end of the servo tensioner, a moving block threadedly connected to the bidirectional lead screw, an adjusting knob fixedly mounted on one end of the bidirectional lead screw, an expansion wheel rotatably connected to the front of the moving block, a pressing roller slidably mounted on the limiting slide groove, and a pressure belt drivingly connected to the expansion wheel, the pressing roller, and the tension wheel.

[0008] Optionally, a rotating rod is fixedly installed on the front of the movable block, and the expansion wheel is rotatably connected to the end of the rotating rod. The two expansion wheels are symmetrically arranged above the tension wheel.

[0009] Optionally, a lifting groove located directly behind the limiting slide groove is fixedly installed on the rear side of the tension motor plate. A lifting block is slidably connected inside the lifting groove. A connecting shaft is fixedly installed on the front side of the lifting block. The pressing roller is rotatably connected to the end of the connecting shaft. The connecting shaft is slidably connected to the inside of the limiting slide groove.

[0010] Optionally, a pull-down spring is fixedly installed on the rear side of the tension motor plate, located directly below the lifting block, and the top of the pull-down spring is fixedly installed with the bottom of the lifting block.

[0011] Optionally, the tension motor plate is fixedly mounted with guide slide rods located on the upper and lower sides of the bidirectional lead screw, and the upper and lower ends of the moving block are respectively slidably connected to the guide slide rods.

[0012] Optionally, the diameter of the connecting shaft is the same as the width of the limiting groove, the top of the limiting groove is higher than the top of the tension wheel, the length of the horizontal groove is greater than the sum of the lengths of the two limiting grooves, and the lengths of the two limiting grooves are the same.

[0013] Optionally, the clamping band is a flexible rubber band, and the clamping band makes rolling contact with the upper part of the tensioning wheel.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This servo tensioner with a wire loosening function uses a clamping belt. When the wire passes through the tension wheel, the clamping belt presses the wire tightly into the groove of the tension wheel. The wire is wrapped by the clamping belt and the tension wheel, increasing friction and preventing slippage. The wire's conveying torque can be adjusted via the tension wheel. Furthermore, rotating the adjustment knob rotates the bidirectional lead screw, which in turn moves the moving block, which in turn moves the expansion wheel. This, in turn, moves the clamping belt, which in turn moves the lower pressure roller. By adjusting the height of the lower pressure roller, the contact area between the clamping belt and the tension wheel can be adjusted, thereby adjusting the amount of friction on the wire. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a servo tensioner with a loosening function according to the present invention.

[0017] Figure 2 This is a schematic diagram of the tension motor plate of a servo tensioner with a wire loosening function according to the present invention;

[0018] Figure 3 This is a schematic diagram of the tension wheel of a servo tensioner with a wire loosening function according to the present invention.

[0019] In the diagram: 1. Tension motor plate; 2. Servo tensioner; 3. Tension wheel; 4. Horizontal slide groove; 5. Two-way lead screw; 6. Adjustment knob; 7. Moving block; 8. Rotating rod; 9. Expansion wheel; 10. Pressure belt; 11. Limit slide groove; 12. Lifting groove; 13. Lifting block; 14. Pull-down spring; 15. Connecting shaft; 16. Pressing roller; 17. Guide slide rod. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 3 This utility model provides a servo tensioner with a loosening function, including a tension motor plate 1, a servo tensioner 2 fixedly mounted on the rear side of the tension motor plate 1, a horizontal slide groove 4 on the top of the tension motor plate 1, a bidirectional lead screw 5 rotatably connected to the rear side of the tension motor plate 1 and located behind the horizontal slide groove 4, limit slide grooves 11 on both sides of the tension motor plate 1, a tension wheel 3 fixedly mounted on the output end of the servo tensioner 2, and a moving block 7 threadedly connected to the bidirectional lead screw 5. An adjustment knob 6 is fixedly installed at one end. The front of the moving block 7 is rotatably connected to the expansion wheel 9. The limiting slide groove 11 is slidably provided with a pressing roller 16. The expansion wheel 9, the pressing roller 16 and the tension wheel 3 are connected by a pressing belt 10. By setting the pressing belt 10, when the line passes through the tension wheel 3, the pressing belt 10 presses the line into the groove of the tension wheel 3. The line is wrapped by the pressing belt 10 and the tension wheel 3, which increases the friction and prevents the line from slipping. At the same time, the transmission torque of the line can be adjusted by the tension wheel 3.

[0022] A rotating rod 8 is fixedly installed on the front of the movable block 7. An expansion wheel 9 is rotatably connected to the end of the rotating rod 8. The two expansion wheels 9 are symmetrically arranged above the tension wheel 3.

[0023] A lifting groove 12 located directly behind the limiting slide groove 11 is fixedly installed on the rear side of the tension motor plate 1. A lifting block 13 is slidably connected inside the lifting groove 12. A connecting shaft 15 is fixedly installed on the front side of the lifting block 13. The pressing roller 16 is rotatably connected to the end of the connecting shaft 15. The connecting shaft 15 is slidably connected to the inside of the limiting slide groove 11.

[0024] A pull-down spring 14 is fixedly installed on the rear side of the tension motor plate 1, located directly below the lifting block 13. The top of the pull-down spring 14 is fixedly installed to the bottom of the lifting block 13.

[0025] The tension motor plate 1 is fixedly installed with guide slide rods 17 located on the upper and lower sides of the bidirectional lead screw 5. The upper and lower ends of the moving block 7 are respectively slidably connected to the guide slide rods 17.

[0026] The diameter of the connecting shaft 15 is the same as the width of the limiting slide groove 11. The top of the limiting slide groove 11 is higher than the top of the tension wheel 3. The length of the horizontal slide groove 4 is greater than the sum of the lengths of the two limiting slide grooves 11. The lengths of the two limiting slide grooves 11 are the same. By rotating the adjusting knob 6, the bidirectional lead screw 5 is rotated, which in turn causes the moving block 7 to drive the expansion wheel 9 to move, which in turn causes the pressing belt 10 to drive the lower pressing roller 16 to move. By adjusting the height of the lower pressing roller 16, the contact area between the pressing belt 10 and the tension wheel 3 is adjusted, thereby adjusting the magnitude of the friction force on the line.

[0027] The clamping belt 10 is a flexible rubber belt, and the clamping belt 10 makes rolling contact with the upper part of the tensioning wheel.

[0028] Working principle:

[0029] When the thread passes through the tension wheel 3, the clamping belt 10 presses the thread tightly inside the groove of the tension wheel 3. The thread is wrapped by the clamping belt 10 and the tension wheel 3, increasing the friction and preventing the thread from slipping. The thread's conveying torque can be adjusted by the tension wheel 3. Furthermore, by rotating the adjustment knob 6, the bidirectional lead screw 5 rotates, which in turn causes the moving block 7 to move the expansion wheel 9. This, in turn, causes the clamping belt 10 to move the lower pressure roller 16. By adjusting the height of the lower pressure roller 16, the contact area between the clamping belt 10 and the tension wheel 3 is adjusted, thereby adjusting the amount of friction on the thread.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A servo tensioner with a slack line function, comprising a tension motor plate (1), characterized in that, A servo tensioner (2) is fixedly installed on the rear side of the tension motor plate (1). A horizontal slide groove (4) is provided on the top of the tension motor plate (1). A bidirectional lead screw (5) located on the rear side of the horizontal slide groove (4) is rotatably connected to the rear side of the tension motor plate (1). A limiting slide groove (11) is provided on both sides of the servo tensioner (2). A tension wheel (3) is fixedly installed at the output end of the servo tensioner (2). A moving block (7) is threaded through the bidirectional lead screw (5). An adjustment knob (6) is fixedly installed at one end of the bidirectional lead screw (5). An expansion wheel (9) is rotatably connected to the front side of the moving block (7). A pressing roller (16) is slidably provided on the limiting slide groove (11). A pressure belt (10) is connected to the expansion wheel (9), the pressing roller (16) and the tension wheel (3) through a transmission.

2. The servo tensioner with a slack line function according to claim 1, characterized in that, A rotating rod (8) is fixedly installed on the front of the moving block (7), and the expansion wheel (9) is rotatably connected to the end of the rotating rod (8). The two expansion wheels (9) are symmetrically arranged above the tension wheel (3).

3. The servo tensioner with a slack line function according to claim 1, wherein The tension motor plate (1) is fixedly installed with a lifting groove (12) located directly behind the limiting slide groove (11). The lifting groove (12) is slidably connected with a lifting block (13). The lifting block (13) is fixedly installed with a connecting shaft (15) on the front. The pressing roller (16) is rotatably connected to the end of the connecting shaft (15). The connecting shaft (15) is slidably connected to the inside of the limiting slide groove (11).

4. The servo tensioner with a slack line function according to claim 3, wherein A pull-down spring (14) located directly below the lifting block (13) is fixedly installed on the rear side of the tension motor plate (1), and the top of the pull-down spring (14) is fixedly installed on the bottom of the lifting block (13).

5. The servo tensioner with a slack line function according to claim 1, wherein The tension motor plate (1) is fixedly installed with guide slide rods (17) located on the upper and lower sides of the bidirectional lead screw (5), and the upper and lower ends of the moving block (7) are respectively slidably connected to the guide slide rods (17).

6. The servo tensioner with a slack line function according to claim 4, wherein The diameter of the connecting shaft (15) is the same as the width of the limiting groove (11). The top of the limiting groove (11) is higher than the top of the tension wheel (3). The length of the horizontal groove (4) is greater than the sum of the lengths of the two limiting grooves (11). The lengths of the two limiting grooves (11) are the same.

7. The servo tensioner with a slack line function according to claim 1, wherein The clamping band (10) is a flexible rubber band, and the clamping band (10) makes rolling contact with the upper half of the tensioning wheel.

Images