Automatic coil winding device

Abstract

The invention discloses an automatic coil winding device which comprises a clamping unit, and the clamping unit is used for clamping and fixing a framework and enabling the framework to rotate in the circumferential direction of the framework; the displacement control unit is used for controlling the metal wire to be wound to move in the three-dimensional space; a metal wire to be wound is connected with the displacement control unit through a tension control system; when the automatic winding device is used, the framework is fixed on the clamping unit, and the displacement control unit controls a metal wire to be wound to be wound on the framework. According to the device, automatic winding of the coil is achieved, standardization and intelligentization of the coil winding process are achieved, the induction coil winding efficiency is improved, and the stability and consistency of products are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of well logging instrument equipment manufacturing and relates to an automatic coil winding device. Background Art

[0002] Array induction instrument is one of the most commonly used electrical logging instruments. The coil is the core component of the array induction instrument. Its design and manufacturing quality directly determine the quality of the instrument's measurement signal. In the current research and development and manufacturing, complex coils are still wound manually. There are the following problems with manual winding: 1) During the winding process of the induction coil, it is necessary to manually align the zero point position. For complex and multi-type coils, it is easy to reverse the winding and the coils wound by different personnel are inconsistent, which affects the performance of the coil. 2) The winding tension cannot be precisely controlled. Different forces or personnel will affect the winding of the coil and thus affect the measurement accuracy and consistency of the instrument; 3) The coil winding efficiency is low. Two people are required to cooperate during the winding process, one person rotates the coil and the other person winds the wire. Due to the discontinuous grooves, the winding process needs to stop every time it is wound to cross the smooth surface and embed it into the next groove. Each array induction instrument has more than a dozen coils, and the largest coil has 200 turns. The manual winding efficiency is very low; 4) For three-dimensional coils, each surface has six rectangular coils. Manual winding has problems such as reverse winding direction or the number of turns does not match the actual number. The current manual winding process is not conducive to the standardized production of induction coils, and the consistency cannot be guaranteed, which also restricts the efficiency and quality of instrument production.

[0003] In 2014, Cao Mengchao and others invented a three-dimensional coil winding fixture and its winding method with patent number 201410849053.X, which solved the problems of slow winding speed and poor reliability of finished products in the three-dimensional coil winding process, making the coil winding process safe and reliable, and greatly improving the production efficiency and quality of three-dimensional coil winding. However, this invention patent is still manual work, and does not mention the possibility of automatic winding of three-dimensional coils; in 2017, Li Yuwen invented a rectangular coil automatic ring winding machine with patent number: 201711342490.8. The invention overcomes the problem that the ring winding machine cannot drive the rectangular coil for winding, and realizes the problem of automatic winding of the rectangular coil ring, but the invention does not involve the winding problem of the slotted coil; Gu Xuliang et al. invented and disclosed a rectangular magnetic coil winding and use method in 2019 with patent number: 201911306466.0, which reduces the manual labor intensity during the production of rectangular magnetic coils, improves the coil production efficiency, and reduces costs and noise. However, its electromagnetic structure is complex and difficult to maintain, and no solution for winding slotted coils is proposed. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides an automatic coil winding device, thereby solving the technical problems in the prior art of manually winding coils, such as the inability to accurately control the winding tension force, low winding efficiency, inconsistent density of wire turns, and reverse winding direction.

[0005] The present invention is achieved through the following technical solutions:

[0006] A coil automatic winding device, comprising:

[0007] A clamping unit, which clamps and fixes the skeleton and makes the skeleton rotate along its circumferential direction;

[0008] A displacement control unit, which controls the movement of the metal wire to be wound in three-dimensional space;

[0009] A tension control unit, through which the metal wire to be wound is connected to the displacement control unit;

[0010] When the automatic winding device is used, the skeleton is fixed on the clamping unit, and the displacement control unit controls the metal wire to be wound on the skeleton.

[0011] Preferably, the clamping unit comprises a first clamping assembly and a second clamping assembly, and when the automatic winding device is used, the skeleton is arranged between the first clamping assembly and the second clamping assembly.

[0012] Preferably, the automatic winding device also includes a spindle module, which includes a drive assembly and a spindle connected to each other, and the spindle is coaxially arranged with the first clamping assembly and the second clamping assembly; the first clamping assembly and the second clamping assembly can rotate synchronously with the spindle under the control of the drive assembly.

[0013] Preferably, the first clamping assembly comprises a spindle adapter shaft; one end of the spindle adapter shaft is provided with a connecting hole and a first anti-rotation surface, the spindle is provided with a second anti-rotation surface, the connecting hole is cooperatively connected with the spindle, and the first anti-rotation surface is cooperatively connected with the second anti-rotation surface;

[0014] The other end of the spindle adapter shaft is provided with a first radial positioning surface and a positioning boss. When the winding device is used, the first radial positioning surface cooperates with the first inner hole on the skeleton, and the positioning boss cooperates with the groove on the skeleton.

[0015] Preferably, a first threaded hole and a through hole are further provided on the spindle adapter shaft, and the first threaded hole and the through hole are respectively arranged along the radial and axial directions of the spindle adapter shaft, and the first threaded hole and the through hole are connected, an adjusting screw is provided in the through hole, and a spring is provided in the first threaded hole, one end of the spring extending into the first threaded hole is abutted and fixed by the adjusting screw, and the free end of the spring abuts against the positioning boss.

[0016] Preferably, a limiting member is further provided on the spindle adapter shaft, and a stop surface is provided on the limiting member, and the stop surface is matched with the positioning boss along the axial clearance of the spindle adapter shaft.

[0017] Preferably, the winding device further comprises a tailstock module, and the tailstock module comprises a tailstock and a slide rail;

[0018] The second clamping device comprises a tailstock adapter shaft, the tailstock adapter shaft is connected to the tailstock, and the tailstock is slidably arranged on the slide rail.

[0019] Preferably, one end of the tailstock adapter shaft is provided with a second radial positioning surface, the second radial positioning surface cooperates with the frame, and the other end of the tailstock adapter shaft is provided with a second inner hole, and the second inner hole is connected to the tailstock.

[0020] Preferably, the displacement control unit comprises an X-axis control module, a Y-axis control module is movably provided on the X-axis control module, and a Z-axis control module is movably provided on the Y-axis control module;

[0021] The Z-axis control module is provided with a wire assembly, and the wire assembly can be wound in three-dimensional directions on the skeleton under the control of the X-axis control module, the Y-axis control module and the Z-axis control module.

[0022] Preferably, a guide needle is provided at the free end of the wire assembly.

[0023] Compared with the prior art, the present invention has the following beneficial technical effects:

[0024] The present invention discloses an automatic coil winding device, comprising a clamping unit, a displacement control unit and a tension control unit. The clamping unit clamps and fixes a skeleton and rotates the skeleton along its circumference; the displacement control unit controls the movement of the metal wire to be wound in three-dimensional space; and the tension control system effectively realizes the control of the tension of the metal wire to be wound during the coil winding process. The device realizes the automatic winding of the coil, achieves the standardization and intelligence of the coil winding process, not only improves the winding efficiency of the induction coil, but also improves the stability and consistency of the product.

[0025] Furthermore, the clamping unit includes a first clamping component and a second clamping component. When the automatic winding device is used, the skeleton is arranged between the first clamping component and the second clamping component, so that the fixing and clamping of the skeleton is more convenient.

[0026] Furthermore, the automatic winding device also includes a spindle module, which includes a drive assembly and a spindle that are connected together, and the spindle is coaxially arranged with the first clamping assembly and the second clamping assembly; the first clamping assembly and the second clamping assembly can rotate synchronously with the spindle under the control of the drive assembly, and the spindle module effectively realizes the rotation of the skeleton.

[0027] Furthermore, the first clamping assembly includes a spindle adapter shaft; one end of the spindle adapter shaft is provided with a connecting hole and a first anti-rotation surface, the spindle is provided with a second anti-rotation surface, the connecting hole is matched with the spindle, and the first anti-rotation surface is matched with the second anti-rotation surface; the other end of the spindle adapter shaft is provided with a first radial positioning surface and a positioning boss, when the winding device is used, the first radial positioning surface is matched with the first inner hole on the skeleton, and the positioning boss is matched with the groove on the skeleton. The spindle adapter shaft realizes the connection between the spindle module and the skeleton, and at the same time, the matching connection between the second anti-rotation surface and the first anti-rotation surface, and the matching connection between the positioning boss and the groove on the skeleton effectively realize the coaxial positioning and circumferential zero point positioning of the skeleton.

[0028] Furthermore, the spindle adapter shaft is also provided with a first threaded hole and a through hole, the first threaded hole and the through hole are respectively arranged along the radial direction and the axial direction of the spindle adapter shaft, and the first threaded hole and the through hole are connected, an adjusting screw is arranged in the through hole, a spring is arranged in the first threaded hole, one end of the spring extending into the first threaded hole is abutted and fixed by the adjusting screw, and the free end abuts against the positioning boss. The setting of the spring here effectively realizes the adaptive matching between the positioning boss and the groove on the frame.

[0029] Furthermore, a limiter is provided on the spindle transfer shaft, and a stopper surface is provided on the limiter, and the stopper surface cooperates with the positioning boss along the axial clearance of the spindle transfer shaft. Here, the stopper surface cooperates with the positioning boss along the axial clearance of the spindle transfer shaft, which effectively avoids the problem of jamming.

[0030] Furthermore, the winding device also includes a tailstock module, which includes a tailstock and a slide rail; the second clamping device includes a tailstock adapter shaft, which is connected to the tailstock, and the tailstock is slidably arranged on the slide rail. The tailstock and the tailstock adapter shaft realize coaxial secondary positioning, axial secondary positioning and locking and fixing of the skeleton. In addition, the tailstock can slide on the slide rail and can adapt to skeletons of different lengths, thereby improving the wide application of the device.

[0031] Furthermore, a second radial positioning surface is provided at one end of the tailstock adapter shaft, and the second radial positioning surface cooperates with the frame. A second inner hole is provided at the other end of the tailstock adapter shaft, and the second inner hole is connected to the tailstock. The setting of the second radial positioning surface here makes it more convenient to fix and position it with the frame.

[0032] Furthermore, the displacement control unit includes an X-axis control module, on which a Y-axis control module is movably provided, and on which a Z-axis control module is movably provided; the Z-axis control module is provided with a wire assembly, and the wire assembly can be wound in three dimensions on the skeleton under the control of the X-axis control module, the Y-axis control module and the Z-axis control module, thereby effectively realizing the displacement control of the metal wire to be wound.

[0033] Furthermore, a guide pin is provided at the free end of the wire assembly. The provision of the guide pin facilitates positioning of the metal wire to be wound, thereby effectively improving the accuracy of the coil winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 It is a front view of an automatic coil winding device in the present invention;

[0036] Figure 2 It is a structural schematic diagram of the clamping unit in the present invention;

[0037] Figure 3 Schematic diagram of the structure of the main shaft adapter shaft in the present invention, (left) a schematic diagram of the structure from one perspective, (right) a schematic diagram of the structure from another perspective;

[0038] Figure 4 It is a structural schematic diagram of the main shaft transfer shaft in the present invention;

[0039] Figure 5 It is a schematic diagram of the structure of the positioning boss in the present invention, (upper) bottom view, (lower) front view;

[0040] Figure 6 It is a schematic diagram of the structure of the limiting member in the present invention;

[0041] Figure 7 It is a structural schematic diagram of the tailstock adapter shaft in the present invention;

[0042] Figure 8 It is a schematic diagram of the structure of the skeleton;

[0043] Fig. 9 It is a side view of the winding device of the present invention after the frame is installed;

[0044] Fig.10 It is a schematic diagram of the structure of the tension control unit in the present invention, (left) front view, (right) front view;

[0045] Fig.11 This is a schematic diagram of the cam control principle in the present invention;

[0046] Fig.12 This is a schematic diagram of the slot winding route under the control of the slot coil cam of the 3DIT6531 three-dimensional induction logging tool;

[0047] Fig.13 A side view of the skeleton of the 3DIT6531 three-dimensional induction logging tool after the winding device of the present invention is used to wind the wire;

[0048] Fig.14 It is a structural schematic diagram before the Z coil of the 3DIT6531 three-dimensional induction logging tool is wound by using the winding device of the present invention;

[0049] Fig.15 This is a schematic diagram of the winding principle of the coaxial coil in the present invention;

[0050] Fig.16 This is a schematic diagram of the quadrant division of the 3DIT6531 three-dimensional induction logging tool and the slots in each quadrant.

[0051] Wherein: 1. spindle module, 2. first clamping assembly, 3. skeleton, 4. second clamping assembly, 5. tailstock module, 6. slide rail, 7. first X-axis control module, 8. second X-axis control module, 9. Y-axis control module, 10. Z-axis control module, 11. tension control unit, 12. wire assembly, 13. support platform, 14. spindle adapter shaft, 15. positioning boss, 16. limiter, 17. spring, 18. adjusting screw, 19. T-slot, 20. first threaded hole, 21. through hole, 22. second threaded hole, 23. connecting hole, 24. first anti-rotation surface, 25. countersunk hole, 26. first end face, 27. skeleton axial positioning surface, 28. first radial positioning surface, 29. arc top, 30. boss side wall, 31. spring limit hole, 32. boss end, 33. through hole, 34. stop surface, 35. second end Surface, 36, second inner hole, 37, third threaded hole, 38, reducer, 39, second radial positioning surface, 40, tailstock adapter shaft, 44, tailstock, 45, fixed seat, 46, spindle, 47, second anti-rotation surface, 48, fourth threaded hole, 49, tailstock shaft, 52, first inner hole, 53, third end face, 54, groove, 55, mounting hole, 56, wire entry hole, 57, dust removal felt, 58, main wire wheel, 5 9. Guiding wire wheel, 60. Pendulum, 61. Tension spring, 62. Screw, 63. Outgoing wire wheel, 68. Wire entry point, 69. Moving trajectory of wire guide needle, 70. Overturn position, 72. Right side of skeleton, 73. Left side of skeleton, 74. First quadrant, 75. Second quadrant, 76. Third quadrant, 77. Fourth quadrant, 78. Forward, 79. Reverse, 80. Y coil, 81. X coil, 82. Z coil. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0055] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0056] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0057] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0059] like Figure 1 As shown, the present invention discloses an automatic coil winding device, comprising: a clamping unit, which clamps and fixes a skeleton 3 and makes the skeleton 3 rotate along its circumference; a displacement control unit, which controls the movement of the metal wire to be wound in three-dimensional space; a tension control unit 11, and the metal wire to be wound is connected to the displacement control unit through the tension control system 11; when using the automatic winding device, the skeleton 3 is fixed on the clamping unit, and the displacement control unit controls the metal wire to be wound on the skeleton 3.

[0060] The clamping unit includes a first clamping component 2 and a second clamping component 4 . When the automatic winding device is used, the frame 3 is arranged between the first clamping component 2 and the second clamping component 4 .

[0061] Further, such as Figure 1 , 2As shown, the automatic winding device further comprises a spindle module 1, the spindle module 1 comprises a connected driving assembly and a spindle 46, the spindle 46 is provided with a second anti-rotation surface 47 and a fourth threaded hole 48, the fourth threaded hole 48 is arranged along the axial direction of the spindle 46, and the second anti-rotation surface 47 is located on the side wall of the spindle 46. The spindle 46 is coaxially arranged with the first clamping assembly 2 and the second clamping assembly 4; the first clamping assembly 2 and the second clamping assembly 4 can rotate synchronously with the spindle 46 under the control of the driving assembly, and drive the skeleton 3 to rotate.

[0062] like Figure 3 As shown, the first clamping assembly 2 includes a spindle adapter shaft 14; Figure 3 As shown in the right figure, one end of the spindle adapter shaft 14 is provided with a connecting hole 23 and a first anti-rotation surface 24, the connecting hole 23 is cooperated with the spindle 46, the first anti-rotation surface 24 is cooperated with the second anti-rotation surface 47, and at the same time, the bolt extends into the spindle 46 and is threadedly connected with the fourth threaded hole 48 to realize the connection and fixation of the spindle adapter shaft 14 on the spindle 46.

[0063] like Figure 4 As shown, at the other end of the spindle adapter shaft 14 , a positioning boss 15 , a stopper 16 , a spring 17 and an adjusting screw 18 are provided on the spindle adapter shaft 14 , and the positioning boss 15 cooperates with the groove 54 on the frame 3 .

[0064] like Figure 5 As shown, the positioning boss 15 includes an arc-shaped top 29, a boss side wall 30 and a boss end 32, and the boss end 32 is a chamfered structure. In addition, a spring limiting hole 31 is also provided on the positioning boss 15.

[0065] like Figure 3 As shown in the left figure, the spindle adapter shaft 14 is also provided with a T-slot 19, and a first threaded hole 20 is provided at the T-slot 19. The spring 17 is arranged in the first threaded hole 20, and a positioning boss 15 is provided at the top. Specifically, the top of the spring 17 abuts against the spring limit hole 31 on the positioning boss 15. The first threaded hole 20 is arranged along the radial direction of the spindle adapter shaft 14. In addition, the spindle adapter shaft 14 is also provided with a through hole 21, which is arranged along the axial direction of the spindle adapter shaft 14. The through hole 21 is perpendicular to and connected with the first threaded hole 20. An adjusting screw 18 is arranged at the through hole 21, and the elastic force of the adjusting spring 17 is adjusted by adjusting the screw 18.

[0066] like Figure 4 As shown, the spindle adapter shaft 14 is also provided with a limiter 16. Figure 6As shown, the limiting member 16 includes a stop surface 34 and a limiting plate; the limiting plate is provided with a second end surface 35 and a plurality of through holes 33, and the plurality of through holes 33 are arranged at intervals along the circumference of the limiting plate. Preferably, the plurality of through holes 33 are evenly spaced along the circumference of the limiting plate, which may be 3 through holes 33.

[0067] like Figure 3 As shown in the left figure, the spindle adapter shaft 14 is also provided with a first end face 26, and the second end face 35 on the limit block 16 is arranged close to the first end face 26 on the spindle adapter shaft 14, and the stop face 34 is matched with the positioning boss 15 along the axial clearance of the spindle adapter shaft 14. In addition, the spindle adapter shaft 14 is also provided with a plurality of second threaded holes 22, and the second threaded holes 22 are matched with the through holes 33. The connection between the limit block 16 and the spindle adapter shaft 14 is realized through the second threaded holes 22 and the through holes 33, and can be fixed with screws.

[0068] In addition, the spindle adapter shaft 14 is also provided with a countersunk hole 25, a skeleton axial positioning surface 27 and a first radial positioning surface 28; when the device is used, the third end face 53 on the skeleton 3 is matched with the skeleton axial positioning surface 27, and the first radial positioning surface 28 is matched with the first inner hole 52 on the skeleton 3. At the same time, the locking bolt passes through the countersunk hole 25 and is locked and fixed with the fourth threaded hole 48 in the spindle module 1, thereby realizing the connection and fixation of the spindle adapter shaft 14 and the spindle module 1.

[0069] like Figure 7 As shown, the second clamping device 4 includes a tailstock adapter shaft 40, one end of which is connected to the frame 3, and the other end is connected to the tailstock module 5. One end of the tailstock adapter shaft 40 is provided with a second radial positioning surface 39 and a diameter reducing portion 38, and the second radial positioning surface 39 cooperates with the frame 3. The other end of the tailstock adapter shaft 40 is provided with a second inner hole 36, and the second inner hole 36 is connected to the tailstock module 5. The side wall of the tailstock adapter shaft 40 is provided with a third threaded hole 37, and the third threaded hole 37 is arranged along the radial direction of the tailstock adapter shaft 40. When the second inner hole 36 is connected to the tailstock module 5, it is tightened by screws through the third threaded hole 37.

[0070] like Fig. 9 As shown, the tailstock module 5 includes a tailstock 44, a slide rail 6, and two fixed seats 45, and is combined with Figure 2 It can be seen that the tailstock module 5 also includes a tailstock shaft 49; the tailstock adapter shaft 40 is connected to the tailstock shaft 49, the tailstock shaft 49 is arranged on the tailstock 44, the tailstock 44 is arranged on the slide rail 6, and the two ends of the slide rail 6 are arranged on the fixed seat 45. The main shaft 46, the frame 3 and the tailstock shaft 49 are coaxially arranged.

[0071] In addition, if Figure 1As shown, the winding device further includes a support platform 13, and the clamping unit, the displacement control unit and the tension control unit 11 are all arranged on the support platform 13. That is, the support platform 13 is mainly used to support and store various components on the platform.

[0072] like Figure 1 As shown, the displacement control unit includes an X-axis control module, on which a Y-axis control module 9 is movably provided, and on which a Z-axis control module 10 is movably provided; a wire assembly 12 is provided on the Z-axis control module 10, and the wire assembly 12 can be wound in three dimensions on the skeleton 3 under the control of the X-axis control module, the Y-axis control module 9 and the Z-axis control module 10. The X-axis control module includes a first X-axis control module 7 and a second X-axis control module 8, and the two ends of the Y-axis control module 9 are fixedly provided with the first X-axis control module 7 and the second X-axis control module 8, respectively.

[0073] In a preferred embodiment, the spindle module 1 is driven by a 750W motor, which is transmitted to the spindle 46 through a 90-degree right-angle reducer. The skeleton 3 is clamped by the first clamping assembly 2 and the second clamping assembly 4. The position of the tailstock 44 on the slide rail 6 can be adjusted to adapt to different skeletons. The first X-axis control module 7 and the second X-axis control module 8 are driven by two 200W servo motors respectively, and can move forward and backward for X-axis winding. The Y-axis control module 9 is driven by a 400W servo motor, which can move left and right to realize Y-axis winding. The Z-axis control module 10 is driven by a 200W servo motor, which can move up and down to realize Z-axis winding, thereby realizing movement in the three directions of X, Y, and Z to meet the product winding requirements.

[0074] In addition, the guide wheel of the wire assembly 12 is made of polished ceramic material, which is mainly characterized by smooth surface and low damping. Preferably, the free end of the wire assembly 12 is also provided with a guide pin, that is, the end of the wire assembly 12 is guided and positioned by a guide pin, and the guide pin is made of polished tungsten steel. Different wire diameters are equipped with corresponding guide pins to meet the precise positioning of the copper wire during winding and ensure the safety of the enameled wire.

[0075] The tension control unit 11 can effectively control the tension of the metal wire during the winding process. In a preferred embodiment, the tension control unit 11 adopts a magnetic damping control method. The system has a built-in magnetic damping generator. After the tension value is set by the host computer or directly in the tension control system interface, the system provides the corresponding resistance, i.e., the copper wire winding tension. An open-loop control method is adopted, and a closed-loop control method can also be adopted according to the accuracy requirements to ensure the stability of the tension of the copper wire during the winding process.

[0076] like Fig.10As shown, the tension control system 11 is provided with an inlet hole 56, a dust removal felt 57, a main wire pulley 58, an outlet wire pulley 63 and a plurality of guide wire pulleys 59. The tension control system 11 is fixed to the main machine through the mounting hole 55. The metal wire, which may be a copper wire, enters through the inlet hole 56, passes through the dust removal felt 57, passes through the first guide wire pulley 59 to the main wire pulley 58 of the built-in tension motor, and then passes through two guide wire pulleys 59 respectively, and exits the tension control system 11 from the outlet wire pulley 63. In addition, the tension control system 11 also includes a rocker arm 60 and a tension spring 61. One end of the rocker arm 60 is connected to the body of the tension control system 11. Preferably, the rocker arm 60 can be fixed to the tension control system 11 by a screw 62, and the other end is connected to the outlet wire wheel 63. One end of the tension spring 61 is connected to the body of the tension control system 11, and the other end is connected to the rocker arm 60. The control principle is: the tension value is set through the human-machine interface, and the tension motor provides an initial tension according to the set tension value. When the tension value fluctuates, the rocker arm 60 and the tension spring 61 offset it by swinging, thereby ensuring the safety of the copper wire during the winding process and preventing it from loosening.

[0077] Further explaining the clamping unit in the present invention, the clamping unit of the automatic winding device is composed of a first clamping component 2 and a second clamping component 4. The first clamping component 2 includes a spindle adapter shaft 14, one end of which is connected and fixed to the spindle 46, and the other end is connected and fixed to the skeleton 3, so as to perform coaxial positioning and circumferential zero point positioning on the skeleton 3. The second clamping component 4 includes a tailstock adapter shaft 40, which is installed and fixed on the tailstock module 5, one end of the tailstock adapter shaft 40 is connected to the tailstock module 5, and the other end is connected to the skeleton 3. In the assembly of the skeleton 3, the tailstock adapter shaft 40 plays the role of auxiliary positioning and clamping, and is used for coaxial secondary positioning, axial secondary positioning and skeleton locking and fixing.

[0078] The assembly process of the spindle adapter shaft 14 in the present invention is as follows: the positioning boss 15 is installed in the T-slot 19 of the spindle adapter shaft 14, the spring 17 passes through the first threaded hole 20 of the spindle adapter shaft 14, and the top end presses the spring stop hole 31 in the positioning boss 15, the adjusting screw 18 passes through the through hole 21 in the spindle adapter shaft 14, and the through hole 21 is connected to the first threaded hole 20, and the adjusting screw 18 vertically supports the lower end of the spring 17, and the elastic force of the spring 17 can be adjusted by adjusting the tightness of the screw 18. The second end face 35 of the limit block 16 is attached to the first end face 26 of the spindle adapter shaft 14, and the stop surface 34 and the positioning boss 15 retain a certain gap, which can be 0.1mm, to avoid the phenomenon of jamming, and finally the screw is locked and fixed with the second threaded hole 22 of the spindle adapter shaft 14 through the through hole 33 on the limit block 16.

[0079] The specific assembly relationship between the spindle adapter shaft 14 and the spindle 46 is as follows: the connecting hole 23 in the spindle adapter shaft 14 cooperates with the spindle 46, and the first anti-rotation surface 24 of the spindle adapter shaft 14 cooperates with the second anti-rotation surface 47 of the spindle 46, which plays the role of anti-rotation and torque transmission. The locking bolt passes through the countersunk hole 25 in the spindle adapter shaft 14 and is locked and fixed with the fourth threaded hole 48 in the spindle module 1, so as to realize the assembly of the spindle adapter shaft 14 and the spindle 46.

[0080] The specific assembly relationship between the tailstock adapter shaft 40 and the tailstock module 5 is as follows: the second inner hole 36 in the tailstock adapter shaft 40 cooperates with the tailstock shaft 49 in the tailstock module 5 and is tightened with screws through the third threaded hole 37 .

[0081] The assembly process of skeleton 3 is as follows: Figure 8 As shown, the skeleton 3 includes a first inner hole 52, a groove 54 and a third end face 53. At one end of the skeleton 3, the groove 54 cooperates with the arc surface 29 on the positioning boss 15. The positioning boss in the present invention has an adaptive function. Through this cooperation, the origin of the skeleton 3 and the origin of the spindle 46 are unified. The first inner hole 52 on the skeleton 3 cooperates with the first radial positioning surface 28 on the spindle adapter shaft 14; at the other end of the skeleton 3, the inner hole at the other end of the skeleton 3 cooperates with the second radial positioning surface 39 on the tailstock adapter shaft 40. After the cooperation, the slide rail 6 is moved to push the third end face 53 of the skeleton 3 to contact with the skeleton axial positioning surface 27 on the spindle adapter shaft 14, the slide rail 6 is locked, and then the tailstock hand wheel is turned until the skeleton 3 is completely fixed in the axial direction. Finally, the locking bolt of the tailstock module 5 is locked to complete the installation of the skeleton 3.

[0082] The coil automatic winding device developed by the present invention clamps the skeleton 3 through the first clamping assembly 2 and the second clamping assembly 4 when winding the coil, and can adapt to skeletons of different lengths by adjusting the position of the tailstock 44 on the slide rail 6. The first X-axis control module 7 and the second X-axis control module 8 are driven by two 200W servo motors respectively, and can move forward and backward for X-axis winding. The Y-axis control module 9 is driven by a 400W servo motor and can move left and right to realize Y-axis winding. The Z-axis control module 10 is driven by a 200W servo motor and can move up and down to realize Z-axis winding, thereby realizing movement in the three directions of X, Y, and Z to meet the product winding requirements. The tension control system 11 ensures that the tension of the copper wire is stable during the winding process. The guide wheel of the wire assembly 12 is equipped with corresponding guide needles for different wire diameters to meet the winding of copper wires of different diameters while ensuring the safety of the enameled wire.

[0083] Cam control, i.e. the principle diagram of slot control is as follows Fig.11As shown, in order to ensure smooth over-turning during the winding process of the product, it has been verified that when the main shaft rotates to the over-turn range, the Y-axis line performs an overshoot displacement, that is, exceeds one over-turn unit distance. When the over-turn is about to end, the Y-axis performs a reverse displacement, that is, compensates for the overshoot distance. During the whole process, the Y-axis only displaces one over-turn unit distance.

[0084] Coil winding diagram Fig.12 As shown, the copper wire is manually led out to the metal wire entry point 68 through the tension control unit 11, and the induction coil is automatically wound. The equipment starts winding according to the parameters of the corresponding model. When the main shaft 46 rotates one circle to the over-turn position 70, the system controls the Y-axis guide needle to move along the wire arrangement guide needle moving track 69 according to the cam control principle to complete an over-turn winding. Repeat the above actions to complete the axial winding of the product.

[0085] Fig.13 is the side view of the coiled frame. Fig.13 It can be seen that the metal wire in the axial direction after winding is a rectangular structure when viewed from the side.

[0086] There are three main models of CPlog array induction tools: MIT1530 array induction logging tool, MIT1531 array induction logging tool and 3DIT6531 three-dimensional induction logging tool.

[0087] The MIT1530 array induction logging tool is a smooth coil, with a total of 11 coils: transmitting coils TR, 06B, 39R, 72B, 72R, all of which are single-wire coils, of which the transmitting coil is wound in two layers. 06R09B, 09R12B, 12R15B, 15R21 B, 21R27B, 27R39B, these 6 are double-wire coils.

[0088] The MIT1531 array induction logging tool is a slotted coil, with a total of 10 coils: transmitting coils TR, 60B, 60R, 94B, 94R, all of which are single-wire coils, of which the transmitting coil is wound in two layers. 06R06B, 10R10B, 16R16B, 24R24B, 39R39B, all of which are double-wire coils.

[0089] 3DIT6531 three-dimensional induction has 11 coils: transmitting coils TR, 24B, 24R, 60B, 60R, 94B, 94R. These 7 types are three-axis coils, and one group of coils includes three coils: X, Y, and Z. The X coil 81 and the Y coil 80 are rectangular coils observed from the side of the frame. They are wound along the horizontal or vertical cross-section direction of the circular ceramic frame, but the upper line on the end surface must follow the circular edge. The end surface is a trapezoidal shape, not a straight line. Therefore, the X coil 81 and the Y coil 80 are not strictly rectangular as a whole, but two "trapezoidal bridges" are built at both ends of the rectangle, such as Fig.13 As shown, one group is X coil 81, and the other group is Y coil 80. Z coil is a circular coil. Fig.14 As shown, the Z coil 82 is wound in the circumferential direction.

[0090] Coaxial coil winding principle diagram Fig.15 As shown, the coaxial winding adopts the spiral winding method. The main shaft rotates at a certain speed, and the Y-axis wire is fed at a certain speed. According to the wire diameter parameters in the product specifications, the program automatically generates the feed amount of the Y-axis for one cycle, so that the copper wire is spirally wound on the optical axis according to the product requirements.

[0091] The quadrant diagram of the X coil 81 is as follows Fig.13 , 16 As shown, 72 is the right side of the frame, 73 is the left side of the frame, and the quadrants of the X coil 81 include the first quadrant 74, the second quadrant 75, the third quadrant 76 and the fourth quadrant 77. The forward rotation 78 and the reverse rotation 79 can satisfy the winding of different frames.

[0092] like Fig.16As shown, the winding principle is as follows: Winding of the X-coil 81: The spindle 46 is stationary, and the guide needle guides the metal wire axially from the 6th slot of the second quadrant 75 of the left side 73 of the skeleton to the 6th slot of the second quadrant 75 of the right side 72 of the skeleton through the X-axis control module, the Y-axis control module 9, and the Z-axis control module 10. The spindle rotates forward by an angle of α1, and the guide needle guides the copper wire from the 6th slot of the second quadrant 75 of the right side 72 of the skeleton to the 6th slot of the first quadrant 74 of the right side 72 of the skeleton. The spindle 46 is stationary, and the wire guide needle guides the copper wire from the 6th slot of the first quadrant 74 of the right side 72 of the skeleton along the axial guide to the 6th slot of the first quadrant 74 of the left side 73 of the skeleton. The spindle is reversed by an angle of α1, and the wire guide needle guides the copper wire from the 6th slot of the first quadrant 74 of the left side 73 of the skeleton to the 6th slot of the second quadrant 75 of the left side 73 of the skeleton to complete one circle of winding, and the 6th slot rectangular coil is wound according to the parameters. When the last circle is wound, the spindle is reversed by an angle of β1, and the wire guide needle guides the copper wire from the 6th slot of the first quadrant on the left side to the 5th slot of the second quadrant on the left side to wind the 5th slot rectangular coil. The 5th slot, 4th slot, 3rd slot, 2nd slot, and 1st slot rectangular coils are wound in the same way. After the first and second quadrant rectangular windings are completed, the spindle rotates forward to the 6th slot of the fourth quadrant 77, and the third and fourth quadrant rectangular coils are wound in the same way, and the rectangular winding of the X coil 81 is completed. The rectangular winding of the Y coil 80 is completed in the same way.

[0093] According to the product type, divided by series, set the corresponding series in the process sub-directory, and the sub-directories under the series correspond to various models. The controller has built-in corresponding control programs according to the process parameters of each model. When winding the product, select according to the product series and model in turn, and the corresponding model product can be automatically wound.

[0094] The parameters of five automatically wound MIT1531 array induction logging tool coils were tested. The test results are shown in Table 1. It can be seen from Table 1 that the absolute value of the deviation between the test value and the reference value is less than 0.5Ω, which meets the use requirements.

[0095] Table 1 MIT1531 array induction logging tool coil performance test table

[0096]

[0097]

[0098] The parameters of three automatically wound 3DIT6531 three-dimensional induction logging tool coils were tested. When the test results were verified, when the resistance of the reference value was not greater than 10Ω, the deviation between the reference value and the measured value should not be greater than 0.5Ω, and when the resistance of the reference value was greater than 10Ω, the error between the reference value and the measured value should not be greater than 10%. As shown in Table 1, each coil meets the use requirements.

[0099] Table 2 3DIT6531 3D induction logging tool coil performance test table

[0100]

[0101]

[0102] This automatic coil winding device improves the overall coil winding efficiency by four times. Taking the MIT1531 array induction 94R coil as an example, it takes two people five hours to wind it manually, but it only takes fifty minutes after automatic winding, which improves the efficiency by twelve times. For coils with fewer turns, the efficiency will be lower. In addition, the consistency of the coils has been greatly improved, and the coil winding process has been standardized and intelligent, saving labor costs, while ensuring the progress of instrument production and improving the quality of logging instruments. The market prospects are broad. For the three array inductions currently in production, the winding efficiency has increased by at least four times on average.

[0103] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coil automatic winding device, characterized in that: include: A clamping unit, wherein the clamping unit clamps and fixes the skeleton (3) and causes the skeleton (3) to rotate along its circumferential direction; A displacement control unit, which controls the movement of the metal wire to be wound in three-dimensional space; A tension control unit (11), through which the metal wire to be wound is connected to the displacement control unit; When the automatic winding device is used, the skeleton (3) is fixed on the clamping unit, and the displacement control unit controls the metal wire to be wound on the skeleton (3).

2. The automatic coil winding device according to claim 1, characterized in that: The clamping unit comprises a first clamping component (2) and a second clamping component (4); when the automatic winding device is used, the frame (3) is arranged between the first clamping component (2) and the second clamping component (4).

3. The automatic coil winding device according to claim 2, characterized in that: The automatic winding device also includes a spindle module (1), the spindle module (1) includes a drive component and a spindle (46) connected to each other, the spindle (46) is coaxially arranged with the first clamping component (2) and the second clamping component (4); the first clamping component (2) and the second clamping component (4) can rotate synchronously with the spindle (46) under the control of the drive component.

4. The automatic coil winding device according to claim 3, characterized in that: The first clamping assembly (2) comprises a main shaft adapter shaft (14); one end of the main shaft adapter shaft (14) is provided with a connecting hole (23) and a first anti-rotation surface (24); the main shaft (46) is provided with a second anti-rotation surface (47); the connecting hole (23) is cooperatively connected with the main shaft (46); the first anti-rotation surface (24) is cooperatively connected with the second anti-rotation surface (47); The other end of the spindle adapter shaft (14) is provided with a first radial positioning surface (28) and a positioning boss (15). When the winding device is used, the first radial positioning surface (28) cooperates with a first inner hole (52) on the skeleton (3), and the positioning boss (15) cooperates with a groove (54) on the skeleton (3).

5. The automatic coil winding device according to claim 4, characterized in that: The spindle adapter shaft (14) is also provided with a first threaded hole (20) and a through hole (21), the first threaded hole (20) and the through hole (21) are respectively arranged along the radial direction and the axial direction of the spindle adapter shaft (14), and the first threaded hole (20) and the through hole (21) are communicated, an adjusting screw (18) is arranged in the through hole (21), a spring (17) is arranged in the first threaded hole (20), one end of the spring (17) extending into the first threaded hole (20) is abutted and fixed by the adjusting screw (18), and the free end of the spring (17) abuts against the positioning boss (15).

6. The automatic coil winding device according to claim 4, characterized in that: The main shaft adapter shaft (14) is also provided with a limiting member (16), and the limiting member (16) is provided with a stop surface (34), and the stop surface (34) is matched with the positioning boss (15) along the axial clearance of the main shaft adapter shaft (14).

7. The automatic coil winding device according to claim 2, characterized in that: The winding device further comprises a tailstock module (5), wherein the tailstock module (5) comprises a tailstock (44) and a slide rail (6); The second clamping device (4) comprises a tailstock adapter shaft (40), the tailstock adapter shaft (40) is connected to a tailstock (44), and the tailstock (44) is slidably arranged on a slide rail (6).

8. The automatic coil winding device according to claim 7, characterized in that: One end of the tailstock adapter shaft (40) is provided with a second radial positioning surface (39), and the second radial positioning surface (39) cooperates with the frame (3); the other end of the tailstock adapter shaft (40) is provided with a second inner hole (36), and the second inner hole (36) is connected to the tailstock (44).

9. The automatic coil winding device according to claim 1, characterized in that: The displacement control unit comprises an X-axis control module, a Y-axis control module (9) is movably provided on the X-axis control module, and a Z-axis control module (10) is movably provided on the Y-axis control module (9); The Z-axis control module (10) is provided with a wire assembly (12), and the wire assembly (12) can be wound in three dimensions on the skeleton (3) under the control of the X-axis control module, the Y-axis control module (9) and the Z-axis control module (10).

10. The automatic coil winding device according to claim 9, characterized in that: The free end of the wire assembly (12) is provided with a guide needle.

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