JP2016100354A - Winding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve accuracy in winding position for element wire, by improving the ability to follow fluctuation in tension of the element wire.SOLUTION: A winding machine comprises: a drum rotating-and-driving part that rotates and drives an element wire drive 1; a reel rotating-and-driving part that rotates and drives a reel; and a control part. The control part adjusts rotating speed of the element wire drum 1 and rotating speed of the reel, thereby adjusting tension of the element wire 3 being drawn. Fluctuation in tension of the element wire 3 can be absorbed by a tension fluctuation absorbing part 70. The tension fluctuation absorbing part 70 has a movable roller 73 around which the element wire 3 is wound and movable in a predetermined direction according to a fluctuation in tension of the element wire 3. The position of the movable roller 73 is measured by a roller position measuring part 80. The control part adjusts rotating speed of the element wire drum 1 on the basis of the position of the movable roller 73 measured by the roller position measuring part 80.SELECTED DRAWING: Figure 3

Description

  Embodiments described herein relate generally to a winding machine.

  2. Description of the Related Art Conventionally, a winding machine for producing a single crystal superconducting coil by winding a superconducting wire having a circular cross section around a winding frame is known.

  The strand wound around the winding frame is wound by being wound a plurality of times in a chord winding shape from one end portion of the winding frame toward the other end portion to form a first layer of the strand. Further, the element wire is further wound in a string shape to form a second layer of the element wire, and the layers formed in this way are stacked, whereby the element is wound in a multilayer shape. The strands are wound with a predetermined number of turns and a predetermined number of layers according to the specifications. At this time, it is preferable that the strands are wound regularly within a predetermined dimensional accuracy in order to ensure superconducting performance. For this purpose, it is important to improve the winding position accuracy of the strands by preventing fluctuations in the tension applied to the strands.

  The wire wound around the winding frame is drawn out from a previously wound wire drum. As a result, the outer diameter of the wire drum including the wound wire varies. Similarly, when the wire is wound around the winding frame, the outer diameter of the winding frame including the wound wire also varies. For this reason, the tension | tensile_strength of a strand can be fluctuate | varied by the fluctuation | variation of the radius of a strand drum, and the fluctuation | variation of the radius of a winding frame. Further, even when the cross section of the winding frame is not a perfect circle, the feed rate of the strand fluctuates, so that the tension of the strand is likely to vary. For this reason, the tension | tensile_strength of the strand was detected using the load cell, the strand pulled out from a strand drum was braked with the powder brake according to the detected tension | tensile_strength, and the follow-up to tension | tensile_strength was aimed at.

JP-A-7-161521

  However, it can be difficult to detect large variations in tension in a load cell. As a result, the detection accuracy of the tension is lowered, and it may be difficult to follow a large tension fluctuation. Further, since the powder brake excites the powder to brake the wire, it is difficult to respond quickly, and in this respect, it may be difficult to follow the tension fluctuation.

  The present invention has been made in consideration of such points, and provides a winding machine that can improve the follow-up ability to the tension fluctuation of the strand and improve the winding position accuracy of the strand. For the purpose.

  The winding machine according to the embodiment draws a strand from a strand drum around which the strand is wound and winds the strand around a reel. The winding machine includes a drum rotation driving unit that rotationally drives the wire drum, a reel rotation driving unit that rotates the reel, and a control unit that controls the drum rotation driving unit and the reel rotation driving unit. I have. The control unit adjusts the rotation speed of the wire drum and the rotation speed of the reel, and adjusts the tension of the wire drawn from the wire. Variations in the tension of the strands can be absorbed by the tension variation absorber. The tension fluctuation absorbing unit has a movable roller around which a wire is wound and which can move in a predetermined direction in accordance with a fluctuation in the tension of the wire. The position of the movable roller is measured by a roller position measuring unit. The control unit adjusts the rotation speed of the wire drum based on the position of the movable roller measured by the roller position measurement unit.

  Further, the winding machine according to the embodiment draws a strand from a strand drum around which the strand is wound and winds the strand around a reel. The winding machine includes a drum rotation driving unit that rotationally drives the wire drum, a reel rotation driving unit that rotationally drives the reel, and a strand drawn from the strand drum at a desired winding position of the reel. And a wire guide for guiding. The wire guide is reciprocated between a first position and a second position that are separated from each other in the direction along the rotation axis of the reel by the guide movement drive unit. The distance between the first position and the second position is not a multiple of the diameter of the strand.

  Further, the winding machine according to the embodiment draws a strand from a strand drum around which the strand is wound and winds the strand around a reel. The winding machine includes a drum rotation driving unit that rotationally drives the wire drum, a reel rotation driving unit that rotates the winding frame, a control unit that controls the drum rotation driving unit and the reel rotation driving unit, A winding frame outer diameter measuring unit that measures a winding outer diameter of the wire wound around the frame. The control unit measures the winding outer diameter of the outermost layer wound around the reel, measured by the reel outer diameter measuring unit, and the strand of the layer immediately below the outermost layer measured by the reel outer diameter measuring unit. When the difference from the winding outer diameter is equal to or less than a predetermined reference value, the wire drum rotation driving unit and the reel rotation driving unit are stopped.

  Furthermore, the winding machine according to the embodiment draws the strand from the strand drum around which the strand is wound and winds the strand around the winding frame. This winding machine includes a drum rotation driving unit that rotates a wire drum, a reel rotation driving unit that rotates a winding frame, and an adhesive application that applies an adhesive to the wire drawn from the strand drum. And a section. The adhesive application unit includes a dispenser that supplies an adhesive, a transfer roller that transfers the adhesive supplied by the dispenser to the strand, and a thickness that adjusts the thickness of the adhesive on the transfer roller that is transferred to the strand. A thickness adjusting unit.

FIG. 1 is a top view showing a winding machine according to a first embodiment of the present invention. FIG. 2 is a front view of the winding machine of FIG. FIG. 3 is a view of the winding machine of FIG. FIG. 4 is a B arrow view of the winding machine of FIG. FIG. 5 is a flowchart showing a part of the operation flow of the winding machine shown in FIG. FIG. 6 is a partial cross-sectional view showing an example of a winding coil obtained by the winding machine of FIG. FIG. 7 is a flowchart showing a part of the operation flow of the winding machine according to the second embodiment of the present invention. FIG. 8 is a diagram showing a winding machine according to the third embodiment of the present invention, and corresponds to FIG. FIG. 9 is a flowchart showing a part of an operation flow of the winding machine according to the third embodiment of the present invention. FIG. 10 is a view showing a modification of the winding machine shown in FIG. FIG. 11 is a diagram showing a varnish application part of a winding machine according to the fifth embodiment of the present invention.

  Hereinafter, a winding machine according to an embodiment of the present invention will be described with reference to the drawings. Here, the winding machine is for producing a winding coil by drawing a wire from a wire drum around which the wire is wound and winding it on a winding frame. For example, a superconducting wire is wound. It can be suitably used to produce a single crystal superconducting coil.

(First embodiment)
The winding machine according to the first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 to 3, the winding machine 10 includes a base 11, a drum rotation driving unit 20 that is attached to the base 11 via a stage 41 (described later) and rotationally drives the wire drum 1, and a base 11 and a reel rotation drive unit 30 that rotates and drives the reel 2. While the wire drum 1 is driven to rotate by the drum rotation drive unit 20 and the winding frame 2 is driven to rotate by the winding frame rotation drive unit 30, the wire 3 wound around the wire drum 1 is drawn out, For example, a winding coil C as shown in FIG.

  The drum rotation drive unit 20 includes a drum holding unit 21 that holds the wire drum 1 and a drum rotation motor 22 that drives the drum holding unit 21 to rotate. Among these, the drum holding unit 21 is attached to the stage 41 via the drum frame 23 and is rotatable with respect to the drum frame 23. The drum holding unit 21 is configured by a chuck mechanism having a plurality of claws, and holds one end of the wire drum 1. The other end of the wire drum 1 is rotatably held by the center of a core pusher 24 fixed to the stage 41.

  As shown in FIG. 1, the rotation of the drum rotating motor 22 is decelerated by a speed reducer 25. A motor side gear 26 is connected to the output portion of the speed reducer 25. On the other hand, a drum rotating shaft 27 rotatably connected to the drum frame 23 is connected to the drum holding portion 21, and a drum side gear 28 that meshes with the motor side gear 26 is connected to the drum rotating shaft 27. Yes. In this way, the rotation of the drum rotation motor 22 is transmitted to the drum holding unit 21 via the speed reducer 25, the gears 26 and 28, and the drum rotation shaft 27, and the strand held by the drum holding unit 21. The drum 1 is configured to rotate. In the present embodiment, the rotation axis of the drum rotating motor 22 and the rotation axis of the strand drum 1 extend in directions orthogonal to each other, and the direction of the rotation axis is converted by a conversion mechanism (not shown). .

  As shown in FIG. 2, the reel rotation driving unit 30 includes a reel holding unit 31 that holds the reel 2 and a reel rotation motor 32 that rotates the reel holding unit 31. . Among these, the reel holding unit 31 is fixed to the base 11 via the reel frame 33 and is rotatable with respect to the reel frame 33. The reel holding part 31 is constituted by a chuck mechanism having a plurality of claws, and holds one end of the reel 2 (the left flange 2a in FIG. 1). The other end of the reel 2 (the right flange 2 a in FIG. 1) is rotatably held by the center of a core push stand 34 fixed to the base 11.

  The rotation of the reel rotating motor 32 is decelerated by the speed reducer 35. A motor side gear 36 is connected to the output portion of the speed reducer 35. On the other hand, a reel rotation shaft 37 rotatably provided on the reel frame 33 is connected to the reel holding portion 31, and the reel side gear meshing with the motor side gear 36 is engaged with the reel rotation shaft 37. 38 is provided. In this way, the rotation of the reel rotating motor 32 is transmitted to the reel holding unit 31 via the speed reducer 35, the gears 36 and 38, and the reel rotating shaft 37, and is held by the reel holding unit 31. The formed reel 2 is configured to rotate. In the present embodiment, the rotation axis of the reel rotation motor 32 and the rotation axis of the reel 2 extend in directions orthogonal to each other, and the direction of the rotation axis is converted by a conversion mechanism (not shown). .

  As shown in FIGS. 1 and 3, the strand drum 1 can be moved in a direction along the rotation axis X of the winding frame 2 (left and right direction in FIG. 1) by a drum traversing mechanism 40 (drum movement drive unit). It has become.

  The drum traversing mechanism 40 is provided on the stage 41 that is movable with respect to the base 11, the ball screw 42 that is provided on the base 11 and extends in the direction along the rotation axis X of the reel 2, and the stage 41. And a ball nut 43 screwed into the ball screw 42, and a drum moving motor 44 that rotationally drives the ball screw 42. A linear guide 45 extending substantially parallel to the ball screw 42 is interposed between the stage 41 and the base 11, and the stage 41 is guided and moved by the linear guide 45. On the stage 41, the above-described drum rotation driving unit 20 and the core push stand 24 are provided. In this way, the ball screw 42 is rotationally driven by the drum moving motor 44, whereby the wire drum 1 held by the drum rotation driving unit 20 and the core pusher 24 is moved along the rotation axis X of the winding frame 2. It is possible to move in the direction. By changing the rotation direction of the drum moving motor 44 by a control unit 90 to be described later, the moving direction of the wire drum 1 can be changed to the left direction or the right direction in FIG. Yes.

  As shown in FIGS. 1, 2, and 4, the strand 3 drawn from the strand drum 1 is guided to a desired winding position of the winding frame 2 by a strand guide 50. The wire guide 50 includes an arm 51 and a plurality of guide rollers 52 provided on the arm 51. Among these, the arm 51 is disposed above the reel 2 held by the reel holder 31 and extends in a direction perpendicular to the rotation axis X of the reel 2. The strand 3 drawn out from the strand drum 1 is wound around the guide roller 52, and is thereby sent in a direction perpendicular to the rotation axis X of the winding frame 2 and wound around a desired winding position of the winding frame 2. .

  As shown in FIG. 1, the wire guide 50 is separated from each other in a direction along the rotation axis X of the reel 2 by a traverser mechanism 60 (guide movement drive unit) (the left flange 2a of the left flange 2a). It is possible to reciprocate between the second position x2 (position near the right flange 2a) and the second position x2.

  The traverser mechanism 60 includes a traverser frame 61 that is fixed upright on the base 11, a stage 62 that is movable with respect to the traverser frame 61, a traverser frame 61, and a rotation axis X of the reel 2. A ball screw 63 extending in the direction along the axis, a ball nut 64 that is provided on the stage 62 and screwed into the ball screw 63, and a guide moving motor 65 that rotationally drives the ball screw 63 are included. A linear guide 66 extending substantially parallel to the ball screw 63 is interposed between the stage 62 and the traverser frame 61, and the stage 62 is guided and moved by the linear guide 66. The arm 51 of the wire guide 50 is fixed to the stage 62. In this way, by rotating and driving the ball screw 63 by the guide moving motor 65, the strand guide 50 can be moved in the direction along the rotation axis X of the winding frame 2. By changing the rotational direction of the guide moving motor 65 when the strand guide 50 reaches the first position x1 or the second position x2 by the control unit 90 described later, the strand guide 50 is It can move leftward or rightward, and can automatically reciprocate.

  As shown in FIGS. 1 and 4, a guide position measuring unit 67 is provided at the tip of the arm 51 of the strand guide 50. The guide position measuring unit 67 measures the distance between the wire guide 50 and the flange 2a (end portion) of the winding frame 2. Then, the control unit 90, which will be described later, determines that the strand guide 50 is in the first position x1 (the left flange 2a) based on the distance between the strand guide 50 measured by the guide position measuring unit 67 and the flange 2a of the reel 2. Or the second position x2 (position near the right flange 2a). When it is determined that the strand guide 50 has reached the first position x1 or the second position x2, the moving direction of the strand guide 50 is reversed.

  For example, the guide position measurement unit can be configured by a pair of touch sensors 67 attached to both sides (left and right sides in FIG. 1) of the arm 51 of the strand guide 50. The left touch sensor 67 measures the distance between the wire guide 50 and the left flange 2a of the winding frame 2, and the right touch sensor 67 detects the arm 51 of the wire guide 50 and the right flange 2a of the winding frame 2. And measure the distance. Then, when the distance measured by the left touch sensor 67 is equal to or less than a predetermined distance by the control unit 90 described later, it is determined that the strand guide 50 has reached the first position x1, and the strand guide When the moving direction of 50 is reversed and the distance measured by the right touch sensor 67 is equal to or less than a predetermined distance, it is determined that the strand guide 50 has reached the second position x2, and the strand guide 50 The moving direction of is reversed. In this way, the wire guide 50 can automatically reciprocate.

  Incidentally, a drum-side laser displacement meter 68 (drum outer diameter measuring unit) is provided above the strand drum 1. The drum-side laser displacement meter 68 includes a winding drum having a winding outer diameter of the strand 3 wound around the strand drum 1 at a position where the strand 3 is pulled out of the strand drum 1 (a strand drum including the strand 3 being wound). 1 outer diameter). The drum-side laser displacement meter 68 irradiates the strand 3 wound around the strand drum 1 with laser light and measures the distance to the strand 3. The winding outer diameter of the strand 3 is obtained by the distance measured by the drum-side laser displacement meter 68.

  As shown in FIG. 1 and FIG. 3, a tension fluctuation absorber that can absorb fluctuations in tension applied to the strand 3 drawn from the strand drum 1 between the strand drum 1 and the strand guide 50. 70 is provided. As shown in FIG. 3, the tension fluctuation absorbing unit 70 is provided to vary fluctuations in tension between the first fixed roller 71 and the second fixed roller 72 around which the element wire 3 is wound and the element wire 3. Accordingly, there is a movable roller 73 provided so as to be movable in a direction orthogonal to the direction from the first fixed roller 71 to the second fixed roller 72 (vertical direction in FIG. 3). The first fixed roller 71 and the second fixed roller 72 are fixed to the stage 41 of the drum traversing mechanism 40 via the drum frame 23. The strand 3 drawn out from the strand drum 1 is wound around the first fixed roller 71, the movable roller 73, and the second fixed roller 72 in this order.

  The movable roller 73 is disposed between the first fixed roller 71 and the second fixed roller 72 when viewed along the moving direction of the movable roller 73 (for example, when viewed from above in FIG. 3). 3 is attached to the movable roller 73, and a linear guide 75 extending in the vertical direction is provided on the drum frame 23. The block 74 is guided by a linear guide 75 and can move in the vertical direction together with the movable roller 73.

  The tension fluctuation absorbing unit 70 biases the movable roller 73 in a direction opposite to the direction in which the movable roller 73 moves (downward in FIG. 3) when the tension of the strand 3 increases. It has further. More specifically, the biasing portion includes a compression spring 76 provided on the upper side of the block 74 and a tension spring 77 provided on the lower side of the block 74. The compression spring 76 has one end fixed to the drum frame 23 and the other end fixed to the block 74, and presses the block 74 downward to urge it. One end of the tension spring 77 is fixed to the drum frame 23, and the other end is fixed to the block 74. The tension spring 77 pulls the block 74 downward to urge it. As a result, the block 74 moves upward due to the tension of the strand 3 when the tension of the strand 3 increases, and the urging force of the compression spring 76 and the tension spring 77 when the tension of the strand 3 decreases. Block 74 may move downward. In this way, when the tension of the strand 3 fluctuates, the movable roller 73 can absorb the fluctuation by the compression spring 76 and the tension spring 77, and the strand 3 is subjected to a sudden tension. Suppresses fluctuations.

  The position of the movable roller 73 of the tension fluctuation absorbing unit 70 is measured by a linear encoder 80 (roller position measuring unit). The linear encoder 80 is disposed in the vicinity of the linear guide 75 and is attached to the drum frame 23. With the linear encoder 80, the vertical position of the block 74 provided with the movable roller 73 can be detected. . For example, it is preferable for the linear encoder 80 to be able to measure the position of the movable roller 73 when the tension fluctuates in the range of 0N to 200N, where the tension 3 is set to 100N.

  As shown in FIG. 3, the drum frame 23 is provided with a load cell 81. The load cell 81 has a load cell roller 81a. The strand 3 is wound around the load cell roller 81a, and the load cell 81 can detect the tension of the strand 3. The load cell 81 is disposed between the second fixed roller 72 of the tension fluctuation absorbing unit 70 and the wire guide 50. Further, a third fixed roller 82 is provided between the first fixed roller 71 and the strand drum 1 of the tension fluctuation absorbing unit 70, and the strand 3 drawn out from the strand drum 1 is a third portion. It is sent to the first fixed roller 71 through the fixed roller 82.

  As shown in FIG. 1, the drum rotation motor 22 of the drum rotation drive unit 20 and the reel rotation motor 32 of the reel rotation drive unit 30 are controlled by a control unit 90. Thereby, the control unit 90 adjusts the rotational speed of the strand drum 1 and the rotational speed of the winding frame 2, and adjusts the tension of the strand 3 drawn out from the strand drum 1. More specifically, the control unit 90 controls the drum rotation motor 22 and the reel rotation motor 32 so that the rotation speed of the wire drum 1 is smaller than the rotation speed of the reel 2. As a result, a predetermined tension is applied to the strand 3 drawn from the strand drum 1 and sent to the winding frame 2.

The control unit 90 according to the present embodiment is configured such that the rotational speed of the winding frame 2 is P, the diameter of the winding frame 2 (the diameter when the strand 3 is not wound) is D, and the strand wound on the winding frame 2 When the number of layers 3 is N and the diameter of the strand 3 is S, the drawing speed Vo of the strand 3 when starting to draw the strand 3 from the strand drum 1 is
Vo = (D ÷ 2 + S × N) × P (1)
The drum rotation motor 22 of the drum rotation drive unit 20 is controlled so that the rotational speed of the wire drum 1 is adjusted.

Then, the control unit 90 extracts the strand 3 measured by the drum-side laser displacement meter 68 after the outermost strand 3 existing on the strand drum 1 when the strand 3 starts to be pulled out. Using the winding outer diameter d, the drawing speed V of the strand 3 is
V = ((D ÷ 2 + S × N) ÷ d) × Vo (2)
The drum rotation motor 22 is controlled so that the rotational speed of the wire drum 1 is adjusted.

  Further, the control unit 90 controls the drum moving motor 44 of the drum traversing mechanism 40 and the guide moving motor 65 of the traverser mechanism 60 described above. That is, the control unit 90 is configured to move the drum so that the tension fluctuation absorbing unit 70 and the wire guide 50 are aligned in a line in a direction perpendicular to the rotation axis X of the winding frame 2 (vertical direction in FIG. 1). The motor 44 and the guide moving motor 65 are controlled. Thus, the wire guide 50 and the wire drum 1 are separately moved in the axial direction of the winding frame 2 in accordance with the winding position of the wire 3 wound in a string form.

  The control unit 90 according to the present embodiment controls the drum rotation driving unit 20 based on the position of the movable roller 73 of the tension fluctuation absorbing unit 70 measured by the linear encoder 80 described above to rotate the wire drum 1. Adjust. For example, the position of the movable roller 73 measured by the linear encoder 80 is closer to the first fixed roller 71 and the second fixed roller 72 (in FIG. 3) than the set position (position when the tension set value is added). In the case of the upper side), since the tension of the strand 3 is larger than the set value, the rotational speed of the strand drum 1 is increased to reduce the tension. On the other hand, when the position of the movable roller 73 is on the side farther from the first fixed roller 71 and the second fixed roller 72 (lower side in FIG. 3) than the set position, the tension of the strand 3 is smaller than the set value. Therefore, the rotational speed of the wire drum 1 is decreased to increase the tension. Thereby, the followability to the tension | tensile_strength fluctuation | variation of the strand 3 is improved.

  Next, the operation of the present embodiment having such a configuration will be described. Here, a winding method in which the wire 3 is wound around the winding frame 2 by the above-described winding machine 10 will be described.

  First, the strand drum 1 around which the strand 3 is wound is held by the drum holding portion 21 and the core support 24 of the drum rotation driving portion 20, and the winding frame 2 around which the strand 3 is not wound is wound. It is held by the winding frame holding part 31 and the core push stand 34 of the frame rotation driving part 30.

  Subsequently, the tension fluctuation absorbing unit 70 and the wire guide 50 are aligned with the winding start position of the wire 3 in the winding frame 2 in a direction perpendicular to the rotation axis X of the winding frame 2. Here, the winding start position is a second position x2 that is a position in the vicinity of the right flange 2a of the reel 2 shown in FIG.

  Next, the strand 3 is drawn out from the strand drum 1 and wound around the rollers 71, 72, 73 of the tension fluctuation absorbing portion 70, the load cell roller 81a, and the rollers 52 of the strand guide 50. Thus, the tip of the strand 3 is fixed at the winding start position of the winding frame 2.

  Next, the drum rotation motor 22 of the drum rotation driving unit 20 and the winding frame rotation motor 32 of the winding frame rotation driving unit 30 are driven, so that the wire drum 1 and the winding frame 2 are respectively rotated at predetermined rotation speeds. Rotate. As a result, the strand 3 is pulled out from the strand drum 1, and the pulled strand 3 is moved to the rollers 71, 72, 73 of the tension fluctuation absorber 70, the load cell roller 81 a, and the strand guide 50. While being guided by the rollers 52, the paper is fed toward the winding frame 2 and wound around the winding frame 2. At this time, the rotational speed of the wire drum 1 is made smaller than the rotational speed of the winding frame 2. As a result, tension is applied to the strand 3 that is drawn from the strand drum 1 and sent to the winding frame 2. Further, the rotational speed of the wire drum 1 is adjusted so that the drawing speed of the wire 3 drawn from the wire drum 1 becomes Vo obtained by the above-described equation (1). This makes it possible to appropriately set the drawing speed of the wire 3 according to the number of layers of the wire 3 wound around the winding frame 2. For example, when the element wire 3 is not wound around the reel 2, N in the formula (1) is 0, but when the element wire 3 is already wound around the reel 2, the reel 2 can be set to an appropriate drawing speed of the wire 3 according to the number of layers of the wire 3 wound around the wire 2.

  While the strand 3 is being wound around the winding frame 2, the strand drum 1 and the tension fluctuation absorbing portion 70 are moved by the drum traversing mechanism 40, and the strand guide 50 is moved by the traverser mechanism 60, so that the tension fluctuation absorbing portion 70 is moved. And the strand guide 50 is aligned with the winding position of the strand 3 in the winding frame 2. Thereby, the fluctuation | variation of the tension | tensile_strength of the strand 3 pulled out from the strand drum 1 is suppressed. Here, the wire guide 50 moves in the left direction in FIG. 1 from the second position x2 toward the first position x1 when the guide moving motor 65 is rotationally driven. The strand drum 1 and the tension fluctuation absorbing unit 70 are directed toward the right side or the left side in FIG. 1 so that the drawing position of the strand 3 drawn from the strand drum 1 follows the movement of the strand guide 50. Move accordingly.

  Further, when the tension of the wire 3 drawn from the wire drum 1 fluctuates while the wire 3 is wound around the winding frame 2, the movable roller 73 of the tension fluctuation absorbing unit 70 moves up and down as shown in FIG. Move in the direction. The position of the moved movable roller 73 is measured by the linear encoder 80, and the control unit 90 rotates the drum rotation motor 22 of the drum rotation driving unit 20 based on the position of the movable roller 73 measured by the linear encoder 80. Adjust the speed. For example, when the set value of the tension of the strand 3 is 100 N and a tension of 120 N is applied to the strand 3, the movable roller 73 is moved to the first fixed roller 71 side and the second fixed roller 72 side (FIG. 3). To the upper side). By measuring the position of the moved movable roller 73 with the linear encoder 80, the rotational speed of the wire drum 1 is increased, and the tension of the fluctuating wire 3 is reduced.

  More specifically, as shown in FIG. 5, first, the position of the movable roller 73 when the tension of the strand 3 is a set value and the current movable roller 73 where the tension of the strand 3 fluctuates. A position difference T from the position is obtained (step S1). The position of the movable roller 73 here is the distance in the vertical direction from the fixed rollers 71 and 72 to the movable roller 73 shown in FIG.

  Subsequently, the difference between the current tension (120N) of the wire 3 and the set value (100N) of the tension is obtained, and a speed correction coefficient is obtained by multiplying the obtained difference by a predetermined correction coefficient (step S2). .

  Next, it is determined whether the position difference T described above is a positive value, a negative value, or 0 (zero) (step S3).

For example, when the set value of the tension of the strand 3 is 100 N and a tension of 120 N is applied to the strand 3, the movable roller 73 moves upward, so the positional difference T becomes positive. In this case, the corrected drawing speed V ′ of the strand 3 is
V ′ = Vo × (1 + speed correction coefficient)
(Step S4).

  Thereafter, the rotation speed of the drum rotation motor 22 of the drum rotation drive unit 20 is adjusted so as to obtain the corrected drawing speed V ′ of the element wire 3. In this case, the drawing speed of the strand 3 increases and the tension of the strand 3 decreases.

On the other hand, when the above-described positional difference T is negative, the corrected drawing speed V ′ of the strand 3 is set to
V ′ = Vo × (1−speed correction coefficient)
(Step S5). In this case, the drawing speed of the strand 3 decreases and the tension of the strand 3 increases. When the position difference T is 0, that is, when the tension is a set value, the current drawing speed of the wire 3 is maintained without correcting the drawing speed Vo of the wire 3. .

  In this way, the changed tension of the strand 3 drawn from the strand drum 1 can be returned to the set value, and the variation in tension can be suppressed.

  By the way, when the tension of the strand 3 fluctuates, the fluctuation of the tension is absorbed by the biasing force of the compression spring 76 and the biasing force of the tension spring 77 of the tension fluctuation absorber 70. Thus, even when a sudden change in tension occurs in the strand 3, it is possible to suppress a sudden change in tension in the strand 3 due to the urging force of the compression spring 76 and the tension spring 77.

  When the wire 3 is wound around the winding frame 2 in a string form, the winding position of the strand 3 on the winding frame 2 is changed to a first position x1 that is a position near the flange 2a on the left side of the winding frame 2. Reach. In this way, as shown in FIG. 6, the first layer (the lowermost layer in FIG. 6) of the wire 3 wound in a string shape is formed on the winding frame 2.

  When the strand guide 50 reaches the first position x1, the strand guide 50 measured by the left touch sensor 67 (see FIG. 1) provided on the arm 51 of the strand guide 50 and the left side of the reel 2 are measured. The distance to the flange 2a is equal to or less than a predetermined distance. Thereby, the rotation direction of the guide moving motor 65 of the traverser mechanism 60 is reversed. As a result, the moving direction of the strand guide 50 is reversed, and the strand guide 50 moves from the first position x1 to the second position x2 in the right direction in FIG. And the strand 3 is wound in the shape of a string on the strand 3 of the first layer already wound. The wire 3 is wound from the first position x1 to the second position x2 of the reel 2. As a result, the second layer of the chord wound wire 3 is formed (see FIG. 6).

  While the second layer of the wire 3 is being formed, the drum rotation motor 22 is rotated so that the drawing speed of the wire 3 drawn from the wire drum 1 becomes V obtained by the above-described equation (2). The speed is adjusted. As a result, it is possible to suppress the fluctuation of the tension of the strand 3 due to the change in the drawing speed of the strand 3 due to the decrease in the number of layers of the strand 3 wound around the strand drum 1. Can be kept constant. During this time, when the tension of the strand 3 fluctuates, the drawing speed of the strand 3 is appropriately corrected according to the operation flow shown in FIG. At this time, V obtained by Expression (2) is substituted for Vo in the flow.

  By winding the wire 3 continuously in this manner, a winding coil C in which the wire 3 is wound in multiple layers as shown in FIG. 6 is obtained.

  As described above, according to the present embodiment, the drum rotation motor 22 of the drum rotation drive unit 20 is controlled based on the position of the movable roller 73 measured by the linear encoder 80 of the tension fluctuation absorption unit 70. As a result, the rotational speed of the drum rotating motor 22 can be adjusted in accordance with fluctuations in the tension of the strand 3, adjusted so that the changed tension becomes a set value, and pulled out from the strand drum 1. The fluctuation of the tension of the strand 3 to be controlled can be suppressed. For this reason, the followability to the tension | tensile_strength fluctuation | variation of the strand 3 can be improved, and the winding position accuracy of the strand 3 can be improved.

  Further, according to the present embodiment, the movable roller 73 of the tension fluctuation absorber 70 is urged by the compression spring 76 and the tension spring 77 in the direction away from the first fixed roller 71 and the second fixed roller 72. As a result, when the tension of the strand 3 fluctuates, this variation can be absorbed by the compression spring 76 and the tension spring 77, and a sudden variation in tension can be suppressed in the strand 3. .

  As described above, the wire guide 50 is reciprocated between the first position x1 and the second position x2 that are separated from each other in the direction along the rotation axis X of the reel 2 by the traverser mechanism 60. It is possible. Such a distance between the first position x1 and the second position x2 is preferably not a multiple of the diameter of the strand 3.

  That is, when the distance between the first position x1 and the second position x2 is a multiple of the diameter of the strand 3, the strand guide 50 is moved to the first position x1 or the second position x2. When reaching the position, the position where the wire 3 rises up one layer above the layer formed so far can be the same position in each layer. In this case, the cross-sectional shape of the produced winding coil C may be distorted at the starting position of the strand 3, and it may be difficult to maintain the dimensional accuracy of the winding coil C.

  However, when the distance between the first position x1 and the second position x2 is not a multiple of the diameter of the strand 3, the position where the strand 3 rises can be shifted in the circumferential direction of the reel 2 in each layer. it can. For example, when the strand 3 having a diameter of 1 mm is wound around the winding frame 2 having a width of 360 mm, the distance between the first position x1 and the second position x2 is set to 395.95 mm (= 360 mm−4.5 ° / 360 °), the position where the strand 3 rises can be shifted in the circumferential direction by 4.5 °. As a result, distortion of the cross-sectional shape of the produced winding coil C can be suppressed, and the dimensional accuracy of the winding coil C can be maintained. Such an effect can be obtained without being related to the control of the drum rotation motor 22 of the drum rotation drive unit 20 based on the position of the movable roller 73.

(Second Embodiment)
Next, a winding machine according to a second embodiment of the present invention will be described with reference to FIG.

  The second embodiment shown in FIG. 7 is mainly different in that the drum rotation driving unit and the reel rotation driving unit are stopped when the tension of the strand is equal to or less than a predetermined reference value. Is substantially the same as the first embodiment shown in FIGS. In FIG. 7, the same reference numerals are given to the first embodiment shown in FIGS. 1 to 6, and detailed description thereof is omitted.

  The control unit 90 according to the present embodiment determines whether the tension of the strand 3 is equal to or less than a predetermined reference value based on the position of the movable roller 73 of the tension fluctuation absorbing unit 70 measured by the linear encoder 80. When it is determined that the tension of the strand 3 is equal to or less than a predetermined reference value, the drum rotation driving unit 20 and the reel rotation driving unit 30 are stopped. For example, the predetermined value can be a half of the tension set value.

  FIG. 7 shows an operation flow according to the present embodiment. The operation of the control unit 90 will be described more specifically with reference to FIG.

  First, the position of the movable roller 73 of the tension fluctuation absorber 70 is measured by the linear encoder 80 (step S31).

  Subsequently, based on the measured position of the movable roller 73, it is determined whether or not the tension of the strand 3 is equal to or less than a predetermined reference value (step S32). In this case, the control unit 90 may determine the tension of the wire 3 from the position of the movable roller 73 and determine whether the determined tension is equal to or less than a reference value. Alternatively, the reference position of the movable roller 73 when the tension becomes the reference value is obtained in advance, and the reference position is compared with the current position of the movable roller 73 to determine whether the tension is less than the reference value. May be determined. More specifically, when the current position of the movable roller 73 is located above the reference position of the movable roller 73 as shown in FIG. 3, the tension of the strand 3 is below the reference value. It can be judged.

  Next, when it is determined that the tension of the strand 3 is equal to or less than the reference value, the drum rotation motor 22 of the drum rotation drive unit 20 and the reel rotation motor 32 of the reel rotation drive unit 30 are decelerated and stopped. (Step S33).

  On the other hand, when it is determined that the tension of the strand 3 exceeds the reference value, the operation of the drum rotating motor 22 and the reel rotating motor 32 is continued, and the winding work is continued.

  As described above, according to the present embodiment, it is determined whether the tension of the strand 3 is equal to or less than the predetermined reference value based on the position of the movable roller 73 of the tension fluctuation absorbing unit 70 measured by the linear encoder 80. When the tension of the strand 3 is equal to or less than the reference value, the drum rotation driving unit 20 and the reel rotation driving unit 30 are stopped. Thereby, a decrease in the tension of the strand 3 can be detected. That is, when the tension of the strand 3 is significantly reduced, the possibility that the strand 3 is disconnected is increased. Even in such a case, according to the present embodiment, the drum rotation driving unit 20 and the reel rotation drive unit 30 can be quickly stopped. For this reason, the safety | security of winding work can be improved.

(Third embodiment)
Next, a winding machine according to a third embodiment of the present invention will be described with reference to FIGS.

  In the third embodiment shown in FIGS. 8 and 9, the difference between the wound outer diameter of the outermost element wire wound around the winding frame and the outer diameter of the wound element wire of the layer immediately below the outermost layer. 1 is mainly different from the first embodiment shown in FIGS. 1 to 6 in that the drum rotation driving unit and the reel rotation driving unit are stopped. Are the same. 8 and 9, the first embodiment shown in FIGS. 1 to 6 is assigned the same reference numeral, and detailed description thereof is omitted.

  As shown in FIG. 8, the winding outer diameter of the wire 3 wound around the winding frame 2 (the outer diameter of the winding frame 2 including the wound wire 3) is measured on the arm 51 of the strand guide 50. A reel outer diameter measuring unit 100 is provided. That is, in the form shown in FIG. 8, the reel outer diameter measuring unit irradiates the strand 3 wound around the reel 2 with the laser beam L and measures the distance to the strand 3. It has a total 100, and is configured such that the winding outer diameter of the wire 3 is obtained by the distance measured by the reel-side laser displacement meter 100. The reel-side laser displacement meter 100 is arranged in a line on a plurality of guide rollers 52 attached to the arm 51, and the outermost layer strand existing below the reel-side laser displacement meter 100. Measure the distance up to 3.

  The control unit 90 according to the present embodiment measures the outer diameter of the outermost strand 3 wound around the reel 2 measured by the reel-side laser displacement meter 100 and the reel-side laser displacement meter 100. When the difference between the wound outer diameter of the element wire 3 of the layer immediately below the outermost layer is equal to or less than a predetermined reference value, the element drum rotation driving unit 20 and the reel rotation driving unit 30 are stopped. .

  FIG. 9 shows an operation flow according to the present embodiment. The operation of the control unit 90 will be described more specifically with reference to FIG.

  First, the wound outer diameter of the outermost strand 3 wound around the reel 2 is measured by the reel-side laser displacement meter 100 (step S41). Here, the distance to the outermost strand 3 existing under the reel-side laser displacement meter 100 is measured.

  Subsequently, the difference between the wound outer diameter of the outermost strand 3 and the wound outer diameter of the strand 3 of the layer immediately below the outermost layer is obtained (step S42). More specifically, the distance from the reel side laser displacement meter 100 to the strand 3, the distance to the strand 3 measured when the strand 3 of the layer immediately below the outermost layer is wound, Difference is required. The distance to the latter strand 3 is stored in the control unit 90.

  Next, it is determined whether or not the obtained difference is equal to or less than a predetermined reference value (step S43). As shown in FIG. 6, when the strand 3 in the layer immediately above is wound around the intermediate position between the strand 3 and the strand 3 in the lower layer, this difference is represented by S as the diameter of the strand 3. In this case, (√3 / 2) × S. For this reason, when the strand 3 is wound normally, the difference is (√3 / 2) × S. On the other hand, when the strand 3 of the layer immediately above is derailed for some reason and is not wound around a predetermined position, the difference is significantly smaller than (√3 / 2) × S. On the other hand, if the reference value is excessively small, it becomes difficult to properly detect the derailment of the strand 3. In consideration of this, it is preferable to set the reference value.

  Next, when it is determined that the obtained difference is equal to or less than a predetermined reference value, the drum rotation motor 22 of the drum rotation drive unit 20 and the reel rotation motor 32 of the reel rotation drive unit 30 are decelerated and stopped. (Step S44).

  On the other hand, when it is determined that the obtained difference exceeds the predetermined reference value, the operation of the drum rotating motor 22 and the reel rotating motor 32 is continued, and the winding work is continued.

  Thus, according to the present embodiment, the difference between the wound outer diameter of the outermost strand 3 wound around the winding frame 2 and the wound outer diameter of the strand 3 of the layer immediately below the outermost layer is as follows. When the value is equal to or less than the predetermined reference value, the wire drum rotation driving unit 20 and the reel rotation driving unit 30 are stopped. Accordingly, it is possible to detect that the wire 3 has been derailed without being wound around a predetermined position, and to quickly stop the drum rotation driving unit 20 and the reel rotation driving unit 30. For this reason, it is possible to prevent the winding operation from being continued in a state where the wire 3 is derailed, and to improve the winding position accuracy of the wire 3. Note that the above-described effects according to the present embodiment can be obtained independently of the first embodiment.

  Further, according to the present embodiment, it is possible to automatically detect that the strand 3 has been derailed without being wound around a predetermined position. As a result, the winding work can be saved. That is, generally, the operator confirms whether or not the wire 3 is derailed after the formation of one layer around which the wire 3 is wound, so that the work load of the winding work is large. However, according to the present embodiment, it is possible to automatically detect the presence / absence of the derailment of the element wire 3, so that the winding work can be saved.

  In the embodiment described above, an example in which the outer diameter measuring unit of the reel has the reel-side laser displacement meter 100 that measures the distance to the wire 3 wound around the reel 2 has been described. . However, the present invention is not limited to this, and the reel outer diameter measuring unit captures the wire 3 wound around the reel 2 and creates an image as shown in FIG. ) And an image processing unit 106 that performs image processing on an image created by the imaging unit 105 to obtain a winding outer diameter of the strand 3. In this case, the outer diameter of the strand 3 can be obtained by performing image processing on an image in which the strand 3 is captured by the imaging unit 105. In the example shown in FIG. 10, the imaging unit 105 is attached to an arm. The image processing unit 106 may be incorporated in the control unit 90 or may be configured separately from the control unit 90.

(Fourth embodiment)
Next, a winding machine according to a fourth embodiment of the present invention will be described with reference to FIG.

  The fourth embodiment shown in FIG. 11 is mainly different in that an adhesive application unit that applies an adhesive to the strand drawn from the strand drum is provided. Through substantially the same as the first embodiment shown in FIG. In FIG. 11, the same reference numerals are given to the first embodiment shown in FIGS. 1 to 6, and detailed description thereof is omitted.

  As shown in FIG. 11, a varnish is applied between the load cell 81 (see FIG. 1) and the guide roller 52 of the strand guide 50 to apply the varnish 120 (adhesive) to the strand 3 drawn from the strand drum 1. An application part 110 (adhesive application part) is provided. When the strand 3 is wound around the winding frame 2 in a multilayer shape, it is preferable that the strand 3 is wound while applying and fixing the varnish 120 to the strand 3. Here, the varnish refers to an adhesive that is cured after a predetermined time has elapsed after being applied.

  The varnish application unit 110 is provided with a dispenser 111 for supplying the varnish 120, a transfer roller 112 for applying the varnish 120 supplied by the dispenser 111, and transferring the applied varnish 120 to the strand 3, and transferring the varnish 120 to the strand 3. And a spatula 113 (thickness adjusting unit) for adjusting the thickness of the varnish 120 on the transfer roller 112 to be transferred. Of these, the spatula 113 scrapes the varnish 120 on the transfer roller 112 from when it is applied until it is transferred to the strand 3 to adjust the thickness of the varnish 120 on the transfer roll 11.

  As described above, according to the present embodiment, the varnish 120 applied on the transfer roller 112 is transferred to the strand 3 with the thickness adjusted by the spatula 113. Thereby, the quantity of the varnish 120 apply | coated to the strand 3 can be equalize | homogenized. For this reason, the winding position accuracy of the strand 3 can be improved, and the quality of the winding coil C can be improved.

  Moreover, according to this Embodiment, the varnish 120 can be automatically apply | coated to the strand 3 with the uniform application quantity. As a result, the winding work can be saved. That is, since the varnish 120 is generally applied to the element wire 3 manually using a brush or the like, the work burden of the winding work is large. However, according to the present embodiment, the varnish 120 is automatically applied. Since 120 can be applied to the strand 3, the winding work can be saved. Furthermore, according to the present embodiment, the application amount of the varnish 120 applied to the strand 3 can be automatically made uniform, so that compared with the case where the varnish 120 is applied to the strand 3 manually, The winding position accuracy of the strand 3 can be improved, and the quality of the winding coil C can be improved. Note that the above-described effects according to the present embodiment can be obtained independently of the first embodiment.

  By the above, the followability to the tension | tensile_strength fluctuation | variation of the strand 3 can be improved, and the winding position accuracy of the strand 3 can be improved.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. Moreover, as a matter of course, these embodiments can be partially combined as appropriate within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Wire drum, 2 winding frame, 2a flange, 3 strand, 10 winding machine, 20 drum rotation drive part, 30 reel rotation drive part, 40 drum traverse mechanism, 50 strand guide, 60 traverser mechanism (guide movement) (Drive unit), 67 touch sensor (guide position measurement unit), 68 drum side laser displacement meter (drum outer diameter measurement unit), 70 tension fluctuation absorption unit, 73 movable roller, 76 compression spring, 77 tension spring, 80 linear encoder ( Roller position measurement unit), 90 control unit, 100 reel side laser displacement meter (roller outer diameter measurement unit), 105 imaging unit, 106 image processing unit, 110 varnish application unit, 111 dispenser, 112 transfer roller, 113 spatula, X Axis of rotation, x1 first position, x2 second position

Claims (11)

A winding machine that draws the wire from a wire drum around which the wire is wound and winds the wire on a reel.
A drum rotation driving unit that rotationally drives the wire drum;
A reel rotation drive unit that rotationally drives the reel;
A control unit that controls the drum rotation driving unit and the reel rotation driving unit to adjust the rotation speed of the wire drum and the rotation speed of the winding frame, and adjusts the tension of the strand drawn from the strand. When,
A tension fluctuation absorbing portion capable of absorbing fluctuations in the tension of the strand, and
The tension fluctuation absorbing unit has a movable roller around which the strand is wound and movable in a predetermined direction in accordance with a variation in tension of the strand.
The position of the movable roller is measured by a roller position measuring unit,
The said control part adjusts the rotational speed of the said strand drum based on the position of the said movable roller measured by the said roller position measurement part, The winding machine characterized by the above-mentioned. When the rotational speed of the winding frame is P, the diameter of the winding frame is D, the number of layers of the wire wound around the winding frame is N, and the diameter of the wire is S, the control unit is: The wire drawing speed when starting to draw the wire from the wire drum is:
Vo = (D ÷ 2 + S × N) × P
The winding machine according to claim 1, wherein the rotational speed of the wire drum is adjusted so that A drum outer diameter measuring unit that measures a winding outer diameter of the wire wound around the wire drum;
The control unit has a winding outer diameter d of the strand measured by the drum outer diameter measurement unit after the outermost layer of the strand existing on the strand drum has been pulled out at the start of drawing of the strand. The wire drawing speed is
V = ((D ÷ 2 + S × N) ÷ d) × Vo
The winding machine according to claim 2, wherein the rotational speed of the wire drum is adjusted so that   The tension fluctuation absorbing portion further includes a biasing portion that biases the movable roller in a direction opposite to a direction in which the movable roller moves when the tension of the wire increases. The winding machine according to any one of claims 1 to 3. A wire guide for guiding the wire drawn from the wire drum to a desired winding position of the winding frame;
A guide movement drive unit that reciprocates the wire guide between a first position and a second position that are separated from each other in a direction along the rotation axis of the winding frame;
The winding machine according to any one of claims 1 to 4, wherein a distance between the first position and the second position is not a multiple of the diameter of the wire.   The control unit determines whether the tension of the strand is equal to or less than a predetermined reference value based on the position of the movable roller measured by the roller position measurement unit, and the tension of the strand is equal to the reference The winding machine according to any one of claims 1 to 5, wherein the drum rotation driving unit and the reel rotation driving unit are stopped when the value is equal to or less than a value. A reel outer diameter measuring unit for measuring a winding outer diameter of the wire wound around the reel;
The control unit is measured by the reel outer diameter measuring unit, the outer diameter of the outermost layer wound around the reel, and the outermost layer measured by the reel outer diameter measuring unit. 2. The wire drum rotation drive unit and the reel rotation drive unit are stopped when a difference between the wire winding outer diameter of the layer immediately below is equal to or less than a predetermined reference value. The winding machine as described in any one of thru | or 6. An adhesive application unit that applies an adhesive to the strands drawn from the strand drum;
The adhesive application part is
A dispenser for supplying the adhesive; a transfer roller for transferring the adhesive supplied by the dispenser to the strand;
A thickness adjusting unit that adjusts the thickness of the adhesive on the transfer roller to be transferred to the element wire. Winding machine. A winding machine that draws the wire from a wire drum around which the wire is wound and winds the wire on a reel.
A drum rotation driving unit that rotationally drives the wire drum;
A reel rotation drive unit that rotationally drives the reel;
A wire guide for guiding the wire drawn from the wire drum to a desired winding position of the winding frame;
A guide movement drive unit that reciprocates the wire guide between a first position and a second position that are separated from each other in a direction along the rotation axis of the winding frame;
The winding machine characterized in that the distance between the first position and the second position is not a multiple of the diameter of the wire. A winding machine that draws the wire from a wire drum around which the wire is wound and winds the wire on a reel.
A drum rotation driving unit that rotationally drives the wire drum;
A reel rotation drive unit that rotationally drives the reel;
A control unit for controlling the drum rotation driving unit and the reel rotation driving unit;
A winding frame outer diameter measuring unit for measuring a winding outer diameter of the wire wound around the winding frame, and
The control unit is measured by the reel outer diameter measuring unit, the outer diameter of the outermost layer wound around the reel, and the outermost layer measured by the reel outer diameter measuring unit. A winding machine characterized in that the wire drum rotation driving unit and the winding frame rotation driving unit are stopped when a difference between a winding outer diameter of the strand of the layer immediately below is equal to or less than a predetermined reference value. . A winding machine that draws the wire from a wire drum around which the wire is wound and winds the wire on a reel.
A drum rotation driving unit that rotationally drives the wire drum;
A reel rotation drive unit that rotationally drives the reel;
An adhesive application unit that applies an adhesive to the wire drawn from the wire drum,
The adhesive application part is
A dispenser for supplying the adhesive;
A transfer roller for transferring the adhesive supplied by the dispenser to the strand;
A winding machine comprising: a thickness adjusting unit that adjusts a thickness of the adhesive on the transfer roller transferred to the element wire.

Images