A precision wire-wound potentiometer winding dense winding process and equipment

Abstract

The invention discloses a precision wire-wound potentiometer winding dense winding process and equipment in the technical field of potentiometer winding processing. The process comprises the following steps: step one: first fixing an annular skeleton on a fixing frame on a winding dense winding polishing device; step two: selecting precision enameled resistance alloy wire QZ6J22 or QZ6J40 as resistance wire material, and installing the wire material on the winding dense winding polishing device; step three: adjusting the fixing frame on the winding dense winding polishing device to a dense winding position, starting the winding dense winding polishing device, making the enameled resistance alloy wire densely wound on the annular skeleton, and removing the winding from the fixing frame when the winding is fully wound 360 degrees; the process of the invention can fix the resistance alloy wire on the annular skeleton as a whole on the surface of the annular skeleton by varnishing and drying, and then polishing off the immersion varnish on the winding working surface and the original coating varnish on the resistance alloy wire by the winding dense winding polishing device, thereby avoiding friction with the skeleton and avoiding the occurrence of resistance wire disconnection.

Description

Technical Field

[0001] The invention relates to the technical field of potentiometer winding processing, in particular to a precision wire-wound potentiometer winding dense winding process and equipment thereof. Background Art

[0002] Potentiometer is a variable resistor with three terminals, two of which are fixed terminals and the other is a movable terminal. Its working principle is to convert the displacement change into the resistance change by changing the position of the contact spring inside the potentiometer and the base of the winding working surface. At present, the processing technology of the potentiometer winding is to firstly wind the uncoated resistance alloy wire tightly on the frame to form the winding prototype, and then dip one of the two ports of the winding prototype into paint and dry it, and the other port is not processed and used as the working surface in contact with the contact spring.

[0003] However, in the existing process, the resistance alloy wire skeleton on the working surface of the potentiometer winding is relatively active without being dipped in paint and dried. When the contact spring changes its rotational position, the contact spring will drive the resistance alloy wire on the working surface to slide through friction, causing the resistance alloy wire to rub against the surface of the skeleton. If the potentiometer is used for a long time, the resistance alloy wire on the working surface will rub against the surface of the skeleton for a long time, which can easily cause the resistance alloy wire to be broken, thereby greatly reducing the service life of the potentiometer winding.

[0004] Based on this, the present invention designs a precision wire-wound potentiometer winding dense winding process and equipment to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a precision wire-wound potentiometer winding dense winding process and equipment thereof to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a precision wire-wound potentiometer winding dense winding process and equipment, the process comprising the following steps:

[0007] Step 1: First fix the annular frame on the fixing frame of the winding dense winding and polishing equipment;

[0008] Step 2: Select precision enameled resistance alloy wire QZ6J22 or QZ6J40 as the resistance wire, and install the wire on the winding dense winding and polishing equipment;

[0009] Step 3: Adjust the fixing frame on the winding dense winding and polishing equipment to the dense winding position, start the winding dense winding and polishing equipment, and make the enameled resistance alloy wire densely wound on the annular frame. When the winding is fully wound 360°, remove the winding from the fixing frame;

[0010] Step 4: Soak the winding in gasoline for 10-15 minutes, then let it stand at room temperature for 10-15 minutes, then soak it in A30-12 insulating varnish for 10-15 minutes, then let it stand at room temperature for 24 hours, and finally dry it at 80°C for 30 minutes and 150°C for 5 hours respectively;

[0011] Step 5: Fix the painted and dried winding on the fixing frame on the winding dense winding polishing equipment, adjust the fixing frame to the polishing position, start the winding dense winding polishing equipment, and polish the paint on the working surface of the winding 360° until the paint on the working surface of the winding is polished off.

[0012] The winding dense winding and grinding equipment in step one, step two, step three, step four and step five comprises a support frame, wherein a debris collecting groove is fixedly connected to the bottom of one side of the support frame, a first motor is fixedly connected to one side of the outer wall of the debris collecting groove, an output shaft of the first motor extends into the debris collecting groove and is fixedly connected to a grinding wheel assembly, a limiting connecting block is fixedly connected to the middle of the support frame on the same side of the debris collecting groove, the limiting connecting block is rotatably connected to a triangular fixing frame, one end of the triangular fixing frame close to the limiting connecting block is slidably connected to a slide plate, a movable rotating wheel is rotatably connected to the slide plate, a spring is fixedly connected between the slide plate and one end of the triangular fixing frame close to the limiting connecting block, an angle driving mechanism for adjusting the angle of the triangular fixing frame is provided on the limiting connecting block, and both ends of the triangular fixing frame away from the limiting connecting block are rotatably connected to the fixed rotating wheel. The movable rotating wheel and the two fixed rotating wheels are located on the same plane, the upper part of the support frame is fixedly connected to the arc slide rail on the same side of the debris collecting groove, the arc slide rail is movably connected with an incomplete rotating ring, the notch of the incomplete rotating ring is spliced ​​with an arc strip, the arc strip can be fixedly connected to the incomplete rotating ring by bolts, the incomplete rotating ring and the arc strip can be rotatably connected to the arc slide rail together, the inner side of the incomplete rotating ring is rotatably connected to a resistance alloy wire coil, the arc slide rail is provided with a rotation driving mechanism for driving the incomplete rotating ring and the arc strip to rotate, the arc slide rail is provided with a first transmission mechanism, the rotation driving mechanism can drive one of the fixed rotating wheels to rotate through the first transmission mechanism, the debris collecting groove is provided with a second transmission mechanism, and the output shaft of the first motor can drive one of the fixed rotating wheels to rotate through the second transmission mechanism.

[0013] As a further solution of the present invention, the rotation drive mechanism includes a second motor and a plurality of teeth, the second motor is fixedly connected to the arc-shaped slide rail, the output shaft of the second motor is fixedly connected to the first gear, the plurality of teeth are fixedly distributed in a circular array on the common outer side of the incomplete rotating ring and the arc-shaped bar, and the plurality of teeth can mesh with the first gear.

[0014] As a further scheme of the present invention, the first transmission mechanism includes a second gear, the second gear is fixedly connected to the output shaft of the second motor, the second gear is meshed with a third gear, the third gear is rotatably connected to the arc slide rail, the rotating shaft of the third gear is fixedly connected to the fourth gear, the fourth gear is meshed with a fifth gear, the fifth gear is rotatably connected to the rotating shaft of the second gear, the rotating shaft of the fifth gear is fixedly connected to the sixth gear, the sixth gear is meshed with a seventh gear, the seventh gear is rotatably connected to the rotating shaft of the fourth gear, the rotating shaft of the seventh gear is fixedly connected to the first bevel gear, the first bevel gear is meshed with the second bevel gear, the second bevel gear is rotatably connected to the support frame, the rotating shaft of the second bevel gear is fixedly connected to the third bevel gear, the third bevel gear is meshed with the fourth bevel gear, and the fourth bevel gear is fixedly connected to the rotating shaft of one of the fixed rotating wheels.

[0015] As a further scheme of the present invention, the second transmission mechanism includes an eighth gear, the eighth gear is fixedly connected to the output shaft of the first motor, the eighth gear is meshed with a ninth gear, the ninth gear is rotatably connected to the debris collecting groove, the rotating shaft of the ninth gear is fixedly connected to the first pulley, the first pulley is connected to the second pulley through a belt ring transmission, the second pulley is rotatably connected to the rotating shaft of the eighth gear, the rotating shaft of the second pulley is fixedly connected to the tenth gear, the tenth gear is meshed with an eleventh gear, the eleventh gear is rotatably connected to the rotating shaft of the first pulley, the rotating shaft of the eleventh gear is fixedly connected to the fifth bevel gear, the fifth bevel gear can be meshed with a sixth bevel gear, and the sixth bevel gear is fixedly connected to the rotating shaft of one of the fixed rotating wheels.

[0016] As a further solution of the present invention, the angle driving mechanism includes a hydraulic cylinder, the fixed end of the hydraulic cylinder is fixedly connected to the limiting connecting block, the telescopic end of the hydraulic cylinder is fixedly connected to a rack, the rack is meshed with a twelfth gear, and the twelfth gear is fixedly connected to the rotating shaft of the triangular fixed frame.

[0017] As a further solution of the present invention, the grinding wheel assembly includes a coarse grinding wheel and a fine grinding wheel, the coarse grinding wheel, the fine grinding wheel and the output shaft of the first motor are concentrically arranged, the coarse grinding wheel and the fine grinding wheel are fixedly connected, the second transmission mechanism is located on the side of the debris collecting groove away from the first motor, and the coarse grinding wheel is located at the end of the fine grinding wheel close to the first motor.

[0018] As a further solution of the present invention, an upper end of the debris collecting groove is fixedly connected with an inclined baffle inclined toward the grinding wheel assembly.

[0019] As a further solution of the present invention, the model of the first motor is Y200L1-2, and the model of the second motor is Y250M-2.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The process of the present invention can make the resistance alloy wire tightly wound on the annular frame firmly fixed on the surface of the annular frame as a whole by varnishing and drying, and then the immersion paint on the working surface of the winding after varnishing and drying and the original paint coating on the resistance alloy wire are polished off by the winding dense winding polishing equipment. When the winding processed in this way is used, it will not slide with the frame due to the friction of the spring, thus avoiding friction between the frame and the occurrence of resistance wire disconnection, thereby improving the service life of the winding.

[0022] 2. The winding dense winding and polishing equipment in the present invention can not only perform the dense winding work of the potentiometer winding in the process but also perform the polishing work of the insulating paint on the working surface of the winding, thereby reducing the equipment investment cost of the process, and when the winding is being dipped in paint and dried, the dense winding and polishing work of other windings can be performed, thereby ensuring the high efficiency of the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a process flow chart of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the winding dense winding and polishing equipment from the left side perspective;

[0025] Figure 3 is a schematic structural diagram of a first transmission mechanism;

[0026] Figure 4 is a schematic structural diagram of the second transmission mechanism;

[0027] Figure 5 This is a schematic diagram of the overall structure of the winding close-winding and polishing equipment from the right side perspective;

[0028] Figure 6 for Figure 5 A partial enlarged view of the middle A;

[0029] Figure 7 This is a schematic cross-sectional view of the winding working surface after grinding and forming.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Support frame; 2. Chip collecting groove; 3. First motor; 4. Coarse grinding wheel; 5. Fine grinding wheel; 6. Limiting connecting block; 7. Triangular fixing frame; 8. Slide plate; 9. Movable rotating wheel; 10. Spring; 11. Fixed rotating wheel; 12. Arc slide rail; 13. Incomplete rotating ring; 14. Arc bar; 15. Bolt; 16. Resistance alloy wire coil; 17. Second motor; 18. First gear; 19. Tooth; 20. Second gear; 21. Third gear; 22. Fourth gear; 23 , the fifth gear; 24, the sixth gear; 25, the seventh gear; 26, the first bevel gear; 27, the second bevel gear; 28, the third bevel gear; 29, the fourth bevel gear; 30, the eighth gear; 31, the ninth gear; 32, the first pulley; 33, the belt ring; 34, the second pulley; 35, the tenth gear; 36, the eleventh gear; 37, the fifth bevel gear; 38, the sixth bevel gear; 39, the hydraulic cylinder; 40, the rack; 41, the twelfth gear; 42, the bevel baffle. DETAILED DESCRIPTION

[0032] See also Figure 1-7 The present invention provides a technical solution: a precision wire-wound potentiometer winding dense winding process and equipment, the process comprising the following steps:

[0033] Step 1: First fix the annular frame on the fixing frame of the winding dense winding and polishing equipment;

[0034] Step 2: Select precision enameled resistance alloy wire QZ6J22 or QZ6J40 as the resistance wire, and install the wire on the winding dense winding and polishing equipment;

[0035] Step 3: Adjust the fixing frame on the winding dense winding and polishing equipment to the dense winding position, start the winding dense winding and polishing equipment, and make the enameled resistance alloy wire densely wound on the annular frame. When the winding is fully wound 360°, remove the winding from the fixing frame;

[0036] Step 4: Soak the winding in gasoline for 10-15 minutes, then let it stand at room temperature for 10-15 minutes, then soak it in A30-12 insulating varnish for 10-15 minutes, then let it stand at room temperature for 24 hours, and finally dry it at 80°C for 30 minutes and 150°C for 5 hours respectively;

[0037] Step 5: Fix the painted and dried winding on the fixing frame on the winding dense winding polishing equipment, adjust the fixing frame to the polishing position, start the winding dense winding polishing equipment, and polish the paint on the working surface of the winding 360° until the paint on the working surface of the winding is polished off.

[0038] The winding dense winding grinding equipment in step one, step two, step three, step four and step five includes a support frame 1, a debris collecting groove 2 is fixedly connected to the bottom of one side of the support frame 1, a first motor 3 is fixedly connected to one side of the outer wall of the debris collecting groove 2, the output shaft of the first motor 3 extends into the debris collecting groove 2 and is fixedly connected to a grinding wheel assembly, the middle part of the support frame 1 is fixedly connected to a limiting connecting block 6 on the same side as the debris collecting groove 2, the limiting connecting block 6 is rotatably connected to a triangular fixing frame 7, the end of the triangular fixing frame 7 close to the limiting connecting block 6 is slidably connected to a slide plate 8, a movable rotating wheel 9 is rotatably connected to the slide plate 8, a spring 10 is fixedly connected between the slide plate 8 and the end of the triangular fixing frame 7 close to the limiting connecting block 6, an angle driving mechanism for adjusting the angle of the triangular fixing frame 7 is provided on the limiting connecting block 6, and both ends of the triangular fixing frame 7 away from the limiting connecting block 6 are rotatably connected to the fixed rotating wheel 11, and the movable rotating wheel 9 is rotatably connected to the two The fixed rotating wheels 11 are all located on the same plane, the upper part of the support frame 1 is fixedly connected to the arcuate slide rail 12 on the same side of the debris collecting groove 2, the arcuate slide rail 12 is movably connected with an incomplete rotating ring 13, and an arcuate bar 14 is spliced ​​on the notch of the incomplete rotating ring 13, the arcuate bar 14 can be fixedly connected to the incomplete rotating ring 13 by bolts 15, the incomplete rotating ring 13 and the arcuate bar 14 can be rotatably connected to the arcuate slide rail 12 together, the inner side of the incomplete rotating ring 13 is rotatably connected with a resistance alloy wire coil 16, the arcuate slide rail 12 is provided with a rotation driving mechanism for driving the incomplete rotating ring 13 and the arcuate bar 14 to rotate, the arcuate slide rail 12 is provided with a first transmission mechanism, the rotation driving mechanism can drive one of the fixed rotating wheels 11 to rotate through the first transmission mechanism, the debris collecting groove 2 is provided with a second transmission mechanism, and the output shaft of the first motor 3 can drive one of the fixed rotating wheels 11 to rotate through the second transmission mechanism.

[0039] When the above scheme is put into practical use, the annular frame is first clamped between a movable rotating wheel 9 and two fixed rotating wheels 11 on the triangular fixing frame 7. Under the elastic force of the spring 10, the movable rotating wheel 9 and the two fixed rotating wheels 11 clamp the annular frame together, and then the arc strip 14 on the incomplete rotating ring 13 is opened, and the triangular fixing frame 7 is driven to rotate upward vertically through the angle driving mechanism, so that one side of the annular frame is buckled into the incomplete rotating ring 13 and the first transmission mechanism is just docked, and then the incomplete rotating ring 13 is spliced ​​with the arc strip 14 and fixed by bolts 15. Then, the resistance alloy wire coil 16 is installed inside the incomplete rotating ring 13, and the resistance alloy wire end on the resistance alloy wire coil 16 is fixed on the annular frame, and then the incomplete rotating ring 13 and the arc strip 14 are driven to rotate rapidly by the rotating driving mechanism, and at the same time, the rotating driving mechanism starts one of the fixed rotating wheels 11 to rotate slowly through the first transmission mechanism, and the fixed rotating wheel 11 drives the annular frame to rotate slowly, so that the rapidly rotating incomplete rotating ring 13 drives the resistance alloy wire to be quickly wound on the slowly rotating annular frame, and the winding speed can just make the resistance alloy wire The winding is tightly wound around the slowly rotating annular frame. When it is wound 360°, the winding (the annular frame full of resistance alloy wire) is removed from the triangular fixing frame 7, and then the winding is dipped in paint and dried. The dipped in paint and dried winding is fixed on the triangular fixing frame 7 again, and the triangular fixing frame 7 is driven to rotate to the horizontal through the angle driving mechanism, so that the working surface of the winding is just in contact with the grinding wheel assembly, and the second transmission mechanism is just docked, and then the first motor 3 is started, and the first motor 3 drives the grinding wheel assembly to rotate rapidly. The output shaft of the first motor 3 is driven by the second transmission mechanism. The structure drives one of the fixed wheels 11 to rotate slowly, and the fixed wheel 11 drives the winding to rotate slowly, and the fast-rotating grinding wheel assembly grinds the paint on the slowly rotating winding working surface 360 ​​degrees, and the grinding wheel assembly rotates at a speed that can completely grind off the paint on the slowly rotating winding working surface; in this way, the process makes the resistance alloy wire tightly wound on the annular skeleton firmly fixed on the surface of the annular skeleton as a whole through varnishing and drying, and then the immersion paint on the winding working surface after varnishing and drying and the original coating paint on the resistance alloy wire are polished off by the winding dense winding grinding equipment, such as Figure 7 As shown, the winding processed in this way will not slide with the frame due to the friction of the reed when in use, thus avoiding friction with the frame and the disconnection of the resistance wire, thereby increasing the service life of the winding; the equipment can not only perform the dense winding work of the potentiometer winding in the process, but also perform the grinding work of the insulating paint on the working surface of the winding, thereby reducing the equipment investment cost of the process, and when the winding is being dipped in paint and dried, the dense winding and grinding work of other windings can be performed, thereby ensuring the high efficiency of the processing.

[0040] As a further solution of the present invention, the rotation drive mechanism includes a second motor 17 and a plurality of teeth 19. The second motor 17 is fixedly connected to the arc-shaped slide rail 12. The output shaft of the second motor 17 is fixedly connected to the first gear 18. The plurality of teeth 19 are fixedly distributed in a circular array on the common outer side of the incomplete rotating ring 13 and the arc-shaped bar 14. The plurality of teeth 19 can mesh with the first gear 18.

[0041] When the above scheme is put into actual use, when it is necessary to wind the annular skeleton, the second motor 17 is started, and the second motor 17 drives the first gear 18 to rotate. The first gear 18 drives the incomplete rotating ring 13 and the arc bar 14 to rotate together through a plurality of teeth 19. The incomplete rotating ring 13 drives the resistance alloy wire coil 16 to rotate rapidly around the annular skeleton, thereby realizing the work of tightly winding the resistance alloy wire on the annular skeleton.

[0042] As a further solution of the present invention, the first transmission mechanism includes a second gear 20, which is fixedly connected to the output shaft of the second motor 17, the second gear 20 is meshed with a third gear 21, the third gear 21 is rotatably connected to the arc slide rail 12, the rotating shaft of the third gear 21 is fixedly connected to the fourth gear 22, the fourth gear 22 is meshed with a fifth gear 23, the fifth gear 23 is rotatably connected to the rotating shaft of the second gear 20, the rotating shaft of the fifth gear 23 is fixedly connected to the sixth gear 24, the sixth gear 24 is meshed with a seventh gear 25, the seventh gear 25 is rotatably connected to the rotating shaft of the fourth gear 22, the rotating shaft of the seventh gear 25 is fixedly connected to the first bevel gear 26, the first bevel gear 26 is meshed with the second bevel gear 27, the second bevel gear 27 is rotatably connected to the support frame 1, the rotating shaft of the second bevel gear 27 is fixedly connected to the third bevel gear 28, the third bevel gear 28 is meshed with the fourth bevel gear 29, and the fourth bevel gear 29 is fixedly connected to the rotating shaft of one of the fixed rotating wheels 11.

[0043] When the above scheme is put into practical use, when the annular skeleton needs to be tightly wound, the angle driving mechanism adjusts the triangular fixing frame 7 to be vertical upward, so that the third bevel gear 28 is just meshed with the fourth bevel gear 29, and then the second motor 17 is started, and the output shaft of the second motor 17 drives the second gear 20 to rotate at the same speed, the second gear 20 drives the third gear 21 to rotate at a reduced speed, the third gear 21 drives the fourth gear 22 to rotate at the same speed, the fourth gear 22 drives the fifth gear 23 to rotate at a reduced speed, the fifth gear 23 drives the sixth gear 24 to rotate at the same speed, and the sixth gear 24 drives the sixth gear 24 to rotate at the same speed. The wheel 24 drives the seventh gear 25 to rotate at a reduced speed, the seventh gear 25 drives the first bevel gear 26 to rotate at the same speed, the first bevel gear 26 drives the second bevel gear 27 to rotate at a reduced speed, the second bevel gear 27 drives the third bevel gear 28 to rotate at the same speed, the third bevel gear 28 drives the fourth bevel gear 29 to rotate at a reduced speed, the fourth bevel gear 29 drives one of the fixed wheels 11 to rotate at the same speed, the fixed wheel 11 drives the annular skeleton to rotate slowly, the annular skeleton drives the movable wheel 9 and the other fixed wheel 11 to rotate, thereby realizing the slow rotation of the annular skeleton.

[0044] As a further solution of the present invention, the second transmission mechanism includes an eighth gear 30, which is fixedly connected to the output shaft of the first motor 3, and the eighth gear 30 is meshed with a ninth gear 31, and the ninth gear 31 is rotatably connected to the debris collecting groove 2, and the rotating shaft of the ninth gear 31 is fixedly connected to the first pulley 32, and the first pulley 32 is connected to the second pulley 34 through the belt ring 33, and the second pulley 34 is rotatably connected to the rotating shaft of the eighth gear 30, and the rotating shaft of the second pulley 34 is fixedly connected to the tenth gear 35, and the tenth gear 35 is meshed with the eleventh gear 36, and the eleventh gear 36 is rotatably connected to the rotating shaft of the first pulley 32, and the rotating shaft of the eleventh gear 36 is fixedly connected to the fifth bevel gear 37, and the fifth bevel gear 37 can be meshed with a sixth bevel gear 38, and the sixth bevel gear 38 is fixedly connected to the rotating shaft of one of the fixed rotating wheels 11.

[0045] When the above scheme is put into actual use, when grinding is required, the angle driving mechanism adjusts the triangular fixed frame 7 to the horizontal, so that the sixth bevel gear 38 is just meshed with the fifth bevel gear 37, and then the first motor 3 drives the eighth gear 30 to rotate through its output, the eighth gear 30 drives the ninth gear 31 to rotate at a reduced speed, the ninth gear 31 drives the first pulley 32 to rotate at the same speed, the first pulley 32 drives the second pulley 34 to rotate at a reduced speed through the belt ring 33, the second pulley 34 drives the tenth gear 35 to rotate at the same speed, the tenth gear 35 drives the eleventh gear 36 to rotate at a reduced speed, the eleventh gear 36 drives the fifth bevel gear 37 to rotate at the same speed, the fifth bevel gear 37 drives the sixth bevel gear 38 to rotate at a reduced speed, and the sixth bevel gear 38 drives one of the fixed rotating wheels 11 to rotate at the same speed, so that the winding rotates slowly.

[0046] As a further solution of the present invention, the angle driving mechanism includes a hydraulic cylinder 39, the fixed end of the hydraulic cylinder 39 is fixedly connected to the limiting connecting block 6, the telescopic end of the hydraulic cylinder 39 is fixedly connected to a rack 40, the rack 40 is meshed with a twelfth gear 41, and the twelfth gear 41 is fixedly connected to the rotating shaft of the triangular fixed frame 7.

[0047] When the above scheme is put into actual use, when it is necessary to adjust the angle of the triangular fixing frame 7, the hydraulic cylinder 39 is started. When the hydraulic cylinder 39 extends upward, the hydraulic cylinder 39 drives the rack 40 to move upward, and the rack 40 drives the twelfth gear 41 to rotate. The twelfth gear 41 drives the triangular fixing frame 7 to flip downward through the rotating shaft of the triangular fixing frame 7 until the triangular fixing frame 7 is flipped to the horizontal, thereby making the sixth bevel gear 38 mesh with the fifth bevel gear 37, and making the working surface of the winding contact with the grinding wheel assembly; when the hydraulic cylinder 39 contracts, the hydraulic cylinder 39 drives the rack 40 to move downward, and the rack 40 drives the twelfth gear 41 to rotate. The twelfth gear 41 drives the triangular fixing frame 7 to flip upward through the rotating shaft of the triangular fixing frame 7 until the triangular fixing frame 7 is vertically upward, thereby making the third bevel gear 28 mesh with the fourth bevel gear 29, and making the annular skeleton buckle into the incomplete swivel ring 13.

[0048] As a further solution of the present invention, the grinding wheel assembly includes a coarse grinding wheel 4 and a fine grinding wheel 5, the coarse grinding wheel 4, the fine grinding wheel 5 and the output shaft of the first motor 3 are concentrically arranged, the coarse grinding wheel 4 and the fine grinding wheel 5 are fixedly connected, the second transmission mechanism is located on the side of the debris collecting groove 2 away from the first motor 3, and the coarse grinding wheel 4 is located at the end of the fine grinding wheel 5 close to the first motor 3; during operation, from the angle of the first motor 3 looking at the coarse grinding wheel 4, when the first motor 3 drives the coarse grinding wheel 4 and the fine grinding wheel 5 to rotate clockwise, the first motor 3 can drive the fixed rotating wheel 11 on the left side to rotate counterclockwise (from the top to the bottom observation angle) through the second transmission mechanism, and the fixed rotating wheel 11 drives the winding to rotate clockwise. In this way, the working surface of the winding is first rough-grinded by the coarse grinding wheel 4, and then fine-grinded by the fine grinding wheel 5. The rough grinding can grind off the paint on the working surface of the winding, and the fine grinding can ensure the smoothness of the working surface of the winding.

[0049] As a further solution of the present invention, the upper end of the debris collecting groove 2 is fixedly connected with an inclined baffle 42 inclined toward the grinding wheel assembly; during operation, the inclined baffle 42 can prevent grinding debris from splashing out of the debris collecting groove 2.

[0050] As a further solution of the present invention, the model of the first motor 3 is Y200L1-2, and the model of the second motor 17 is Y250M-2.

[0051] Working principle: First, clamp the annular frame between a movable rotating wheel 9 and two fixed rotating wheels 11 on the triangular fixing frame 7. Under the elastic force of the spring 10, the movable rotating wheel 9 and the two fixed rotating wheels 11 clamp the annular frame together. Then, open the arc strip 14 on the incomplete rotating ring 13, and drive the triangular fixing frame 7 to rotate upward vertically through the angle driving mechanism, so that one side of the annular frame is buckled into the incomplete rotating ring 13 and the first transmission mechanism is just docked. Then, splice the incomplete rotating ring 13 with the arc strip 14 and fix them through bolts 15. Then, close the resistor. The gold wire coil 16 is installed inside the incomplete rotating ring 13, and the end of the resistance alloy wire on the resistance alloy wire coil 16 is fixed on the annular frame, and then the incomplete rotating ring 13 and the arc strip 14 are driven to rotate rapidly through the rotating driving mechanism, and at the same time, the rotating driving mechanism starts one of the fixed rotating wheels 11 to rotate slowly through the first transmission mechanism, and the fixed rotating wheel 11 drives the annular frame to rotate slowly, so that the rapidly rotating incomplete rotating ring 13 drives the resistance alloy wire to be quickly wound on the slowly rotating annular frame, and the winding speed can just make the resistance alloy wire tightly wrapped around On the slowly rotating annular frame, when it is fully wound 360°, the winding (the annular frame fully wound with the resistance alloy wire) is removed from the triangular fixing frame 7, and then the winding is dipped in paint and dried, and then the dipped in paint and dried winding is fixed on the triangular fixing frame 7 again, and the triangular fixing frame 7 is driven to rotate to the horizontal through the angle driving mechanism, so that the working surface of the winding is just in contact with the grinding wheel assembly, and the second transmission mechanism is just docked, and then the first motor 3 is started, and the first motor 3 drives the grinding wheel assembly to rotate rapidly, and the output shaft of the first motor 3 is driven by the second transmission mechanism One of the fixed wheels 11 is driven to rotate slowly, and the fixed wheel 11 drives the winding to rotate slowly, and the fast-rotating grinding wheel assembly grinds the paint on the slowly rotating winding working surface 360 ​​degrees, and the grinding wheel assembly rotates at a speed that can completely grind off the paint on the slowly rotating winding working surface; in this way, the process makes the resistance alloy wire tightly wound on the annular skeleton firmly fixed on the surface of the annular skeleton as a whole through varnishing and drying, and then the immersion paint on the winding working surface after varnishing and drying and the original coating paint on the resistance alloy wire are polished off by the winding dense winding grinding equipment, such as Figure 7 As shown, the winding processed in this way will not slide with the frame due to the friction of the reed when in use, thus avoiding friction with the frame and the disconnection of the resistance wire, thereby increasing the service life of the winding; the equipment can not only perform the dense winding work of the potentiometer winding in the process, but also perform the grinding work of the insulating paint on the working surface of the winding, thereby reducing the equipment investment cost of the process, and when the winding is being dipped in paint and dried, the dense winding and grinding work of other windings can be performed, thereby ensuring the high efficiency of the processing.

Claims

1. A precision wire-wound potentiometer winding dense winding process and equipment, characterized in that: The process includes the following steps: Step 1: First fix the annular frame on the fixing frame of the winding dense winding and polishing equipment; Step 2: Select precision enameled resistance alloy wire QZ6J22 or QZ6J40 as the resistance wire, and install the wire on the winding dense winding and polishing equipment; Step 3: Adjust the fixing frame on the winding dense winding and polishing equipment to the dense winding position, start the winding dense winding and polishing equipment, and make the enameled resistance alloy wire densely wound on the annular frame. When the winding is fully wound 360°, remove the winding from the fixing frame; Step 4: Soak the winding in gasoline for 10-15 minutes, then let it stand at room temperature for 10-15 minutes, then soak it in A30-12 insulating varnish for 10-15 minutes, then let it stand at room temperature for 24 hours, and finally dry it at 80°C for 30 minutes and 150°C for 5 hours respectively; Step 5: Fix the painted and dried winding on the fixing frame on the winding dense winding polishing equipment, adjust the fixing frame to the polishing position, start the winding dense winding polishing equipment, and polish the paint on the working surface of the winding 360° until the paint on the working surface of the winding is polished off; The winding close-winding grinding equipment in step 1, step 2, step 3, step 4 and step 5 comprises a support frame (1), a debris collecting groove (2) is fixedly connected to the bottom of one side of the support frame (1), a first motor (3) is fixedly connected to the outer wall of the debris collecting groove (2), an output shaft of the first motor (3) extends into the debris collecting groove (2) and is fixedly connected to a grinding wheel assembly, a limiting connection block (6) is fixedly connected to the middle of the support frame (1) on the same side as the debris collecting groove (2), and the limiting connection block (6) is rotatably connected to a triangular fixing frame (7), one end of the triangular fixing frame (7) close to the limiting connection block (6) is slidably connected to a slide plate (8), and a movable rotating wheel (9) is rotatably connected to the slide plate (8), and a spring (10) is fixedly connected between the slide plate (8) and the end of the triangular fixing frame (7) close to the limiting connection block (6), and an angle driving mechanism for adjusting the angle of the triangular fixing frame (7) is provided on the limiting connection block (6), and both ends of the triangular fixing frame (7) away from the limiting connection block (6) are rotatably connected to the fixed rotating wheel (11), and the movable rotating wheel (9) is fixedly connected to the slide plate (8) and the end of the triangular fixing frame (7) close to the limiting connection block (6). ) and the two fixed rotating wheels (11) are located on the same plane, the upper part of the support frame (1) is fixedly connected to the arc-shaped slide rail (12) on the same side as the debris collecting groove (2), the arc-shaped slide rail (12) is movably connected with an incomplete rotating ring (13), the notch of the incomplete rotating ring (13) is spliced ​​with an arc-shaped strip (14), the arc-shaped strip (14) can be fixedly connected to the incomplete rotating ring (13) by bolts (15), the incomplete rotating ring (13) and the arc-shaped strip (14) can be rotatably connected to the arc-shaped slide rail (12) together, the incomplete rotating ring (13) and the arc-shaped strip (14) can be rotatably connected to the arc-shaped slide rail (12) together, and the incomplete rotating ring (13) can be rotatably connected to the arc-shaped slide rail (12) together. A resistance alloy wire coil (16) is rotatably connected inside the rotating ring (13); a rotating drive mechanism for driving the incomplete rotating ring (13) and the arc-shaped bar (14) to rotate is provided on the arc-shaped slide rail (12); a first transmission mechanism is provided on the arc-shaped slide rail (12); the rotating drive mechanism can drive one of the fixed rotating wheels (11) to rotate via the first transmission mechanism; a second transmission mechanism is provided on the debris collecting groove (2); and an output shaft of the first motor (3) can drive one of the fixed rotating wheels (11) to rotate via the second transmission mechanism.

2. A precision wire-wound potentiometer winding dense winding process and equipment according to claim 1, characterized in that: The rotation drive mechanism comprises a second motor (17) and a plurality of teeth (19); the second motor (17) is fixedly connected to the arc-shaped slide rail (12); an output shaft of the second motor (17) is fixedly connected to a first gear (18); the plurality of teeth (19) are fixedly distributed in a circular array on a common outer side of the incomplete rotating ring (13) and the arc-shaped bar (14); and the plurality of teeth (19) can mesh with the first gear (18).

3. The precision wire-wound potentiometer winding dense winding process and equipment according to claim 1, characterized in that: The first transmission mechanism comprises a second gear (20), the second gear (20) being fixedly connected to an output shaft of a second motor (17), the second gear (20) being meshed with a third gear (21), the third gear (21) being rotationally connected to the arc-shaped slide rail (12), the rotation shaft of the third gear (21) being fixedly connected to a fourth gear (22), the fourth gear (22) being meshed with a fifth gear (23), the fifth gear (23) being rotationally connected to the rotation shaft of the second gear (20), the rotation shaft of the fifth gear (23) being fixedly connected to a sixth gear (24), the sixth gear ( The first bevel gear (24) is meshed with a seventh gear (25), the seventh gear (25) is rotationally connected to the rotating shaft of the fourth gear (22), the rotating shaft of the seventh gear (25) is fixedly connected to a first bevel gear (26), the first bevel gear (26) is meshed with a second bevel gear (27), the second bevel gear (27) is rotationally connected to the support frame (1), the rotating shaft of the second bevel gear (27) is fixedly connected to a third bevel gear (28), the third bevel gear (28) is meshed with a fourth bevel gear (29), and the fourth bevel gear (29) is fixedly connected to the rotating shaft of one of the fixed rotating wheels (11).

4. The process and equipment for densely winding a precision wire-wound potentiometer according to claim 1, characterized in that: The second transmission mechanism comprises an eighth gear (30), the eighth gear (30) being fixedly connected to the output shaft of the first motor (3), the eighth gear (30) being meshed with a ninth gear (31), the ninth gear (31) being rotationally connected to the debris collecting groove (2), the rotation shaft of the ninth gear (31) being fixedly connected to a first belt pulley (32), the first belt pulley (32) being transmission-connected to a second belt pulley (34) via a belt ring (33), the second belt pulley (34) being rotationally connected to the eighth gear (30) The rotating shaft of the second pulley (34) is fixedly connected to a tenth gear (35), the tenth gear (35) is meshed with an eleventh gear (36), the eleventh gear (36) is rotationally connected to the rotating shaft of the first pulley (32), the rotating shaft of the eleventh gear (36) is fixedly connected to a fifth bevel gear (37), the fifth bevel gear (37) can be meshed with a sixth bevel gear (38), and the sixth bevel gear (38) is fixedly connected to the rotating shaft of one of the fixed rotating wheels (11).

5. The precision wire-wound potentiometer winding dense winding process and equipment according to claim 1, characterized in that: The angle driving mechanism comprises a hydraulic cylinder (39), a fixed end of the hydraulic cylinder (39) being fixedly connected to a limit connection block (6), a telescopic end of the hydraulic cylinder (39) being fixedly connected to a rack (40), the rack (40) being meshed with a twelfth gear (41), and the twelfth gear (41) being fixedly connected to a rotating shaft of a triangular fixed frame (7).

6. A precision wire-wound potentiometer winding dense winding process and equipment according to claim 1, characterized in that: The grinding wheel assembly comprises a coarse grinding wheel (4) and a fine grinding wheel (5); the coarse grinding wheel (4), the fine grinding wheel (5) and the output shaft of the first motor (3) are arranged concentrically; the coarse grinding wheel (4) and the fine grinding wheel (5) are fixedly connected; the second transmission mechanism is located on a side of the debris collecting groove (2) away from the first motor (3); and the coarse grinding wheel (4) is located on an end of the fine grinding wheel (5) close to the first motor (3).

7. A precision wire-wound potentiometer winding dense winding process and equipment according to claim 1, characterized in that: An upper end of the debris collecting groove (2) is fixedly connected to an inclined baffle (42) inclined toward the grinding wheel assembly.

8. A precision wire-wound potentiometer winding dense winding process and equipment according to claim 2, characterized in that: The model of the first motor (3) is Y200L1-2, and the model of the second motor (17) is Y250M-2.

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