JP5317832B2 - Servo correction roller drive device - Google Patents

Description

  The present invention relates to a drive device for a meandering correction roller that corrects the traveling direction of a strip wound as a material such as a capacitor or a battery.

  When a thin band-shaped material, which is a material such as a capacitor or an electrode applied to a battery or a separator, is wound using a winding device, the process of the strip from the original fabric to the core of the winding device Drive on. The following patent document discloses a technique for correcting the traveling direction of the strip so that the meandering caused by the warp in the width direction of the strip or an unexpected change in tension does not occur in this process. This is because the roller supported at the tip of the swing arm is brought into rolling contact with the band before the band is wound around the core of the winding device, and the roller is made to follow the swing of the swing arm. It tilts in the direction to cancel the meandering.

  However, the operation of the roller described above is realized by a cam mechanism that follows the cam of the cam follower connected to the swing arm, and there is room for improvement in the following points. That is, a spring that presses the cam follower against the cam is indispensable. When the force of the spring is strengthened to bring them into close contact with each other, the frictional force between the two increases, and the smooth operation of the roller is hindered. Further, since the operation of the roller depends on the cam mechanism, a slight deviation in the finished size of the cam or the cam arrangement is not allowed. For this reason, it is difficult to manufacture a cam, assemble a cam mechanism, or adjust the cam.

JP 2007-161474 A

  An object of this invention is to provide the drive device of the meandering correction | amendment roller which can correct | amend the meandering of a strip | belt-shaped object with high precision.

  In order to achieve the above-mentioned object, the present invention detects the displacement of the belt-like object during the travel of the belt-like object, and causes the meandering correction roller that is in rolling contact with the belt-like object to cancel the displacement of the belt-like object. A meandering correction roller driving device that operates to guide a planetary gear, a planetary gear meshing with the stationary gear, a movable holder that rotatably supports the planetary gear, and the planetary gear. A main shaft that rotates the movable holder in a direction in which a gear revolves according to the fixed gear, a worm connected to the planetary gear, a worm wheel that is rotatably supported by the movable holder and meshes with the worm, and a worm wheel And a swing arm connected to support the meandering correction roller.

  The present invention also provides a rotating machine that inputs rotational force to the main shaft, meandering detecting means that detects a displacement of the belt and sends a detection signal, and the rotating machine rotates the main shaft based on the detection signal. And a control means for controlling the angle.

  According to the drive device for the meandering correction roller according to the present invention, together with the worm wheel supported by the movable holder by the rotation of the main shaft, the swing arm and the meandering correction roller supported by the swing arm rotate about the main shaft. At the same time, the planetary gear rotatably supported by the movable holder revolves according to the fixed gear fixed to the housing, and the planetary gear itself rotates (spins). As a result, the worm connected to the planetary gear rotates, and the swing arm turns by connecting to the worm wheel meshing with the worm. The direction in which the swing arm turns is centered on an axis orthogonal to the axial direction of the main shaft, so that the meandering correction roller is inclined with respect to the axial direction of the main shaft by the amount of rotation of the worm wheel.

  Since the drive device can perform the operation of the meandering correction roller without depending on the cam mechanism as described above, there is no need for a spring for pressing the cam follower against the conventional cam, and the cam and the cam follower do not slip. Therefore, there is no frictional force that prevents smooth operation of the meandering correction roller between the two. In addition, there is an advantage that the manufacture, assembly, or adjustment of the fixed gear, the planetary gear, the worm, and the worm wheel is easier than the conventional cam mechanism.

The side view which fractured | ruptured a part of drive device of the meandering correction roller which concerns on embodiment of this invention. AA sectional view taken on the line AA of FIG. The perspective view of the principal part which shows the usage example of the drive device of the meandering correction roller which concerns on embodiment of this invention. The block diagram which shows the structure of the drive device of the meandering correction roller which concerns on embodiment of this invention.

  An embodiment of a drive device for a meandering correction roller according to the present invention will be described. FIGS. 1 and 2 show the travel of the strip 1 having a constant width, and the meandering correction roller 3 that is in rolling contact with the strip 1 is operated to cancel the displacement in the width direction indicated by the arrow w of the strip 1. The drive device 5 of the meandering correction roller for guiding the strip 1 in the direction is shown. The cross section of the strip 1 is shown in FIG. 1, and the arrow F in FIGS. 2 and 3 indicates the direction in which the strip 1 travels.

  As shown in FIG. 1, the meander correction roller driving device 5 includes a fixed gear 9 fixed to a housing 7, a planetary gear 11 meshing with the fixed gear 9, a movable holder 13 that supports the planetary gear 11, and a planetary gear. A main shaft 15 that rotates the movable holder 13 in a direction in which the gear 11 revolves according to the fixed gear 9, a worm 17 connected to the planetary gear 11, a worm wheel 19 that is supported by the movable holder 13 and meshes with the worm 17, and a worm wheel 19 And a swing arm 21 that supports the meandering correction roller 3. For convenience of explanation, the casing 7 is omitted in FIG. 2, and the fixed gear 9, the movable holder 13, and the main shaft 15 are omitted in FIG.

  The housing 7 is formed with an insertion port 23 through which the main shaft 15 is inserted. A bearing member 20 formed integrally with a sleeve 16 in which a bearing for bearing the main shaft 15 is mounted and a flange 18 fixed to the housing 7 is disposed in front of the insertion port 23. The fixed gear 9 is obtained by fixing a sector gear composed of a spur gear cut into a range of 180 ° to the sleeve 16 of the bearing member 20. A point O in FIG. 2 indicates the center of rotation of the main shaft 15 and coincides with the center of the pitch circle of the fixed gear 9. Reference numeral 22 denotes a hole through which a bolt for fastening the bearing member 20 to the housing 7 is passed.

  As shown in FIGS. 1 and 3, the worm 17 projects the shaft portions 24 and 25 from both ends thereof, and the planetary gear 11 is a spur gear formed on the peripheral surface of the shaft portion 24. The center of rotation of the shaft portions 24 and 25 coincides with the center of the pitch circle of the planetary gear 11, and the planetary gear 11 and the worm 17 can rotate integrally around the shaft portions 24 and 25. The worm wheel 19 has a shaft portion 27 extending in a direction orthogonal to the shaft portion 25 of the worm 17. The movable holder 13 is a frame that supports both ends of the shaft portions 24 and 25 of the worm 17 and the shaft portion 27 of the worm wheel 19.

  The swing arm 21 is a bar member having a bifurcated end 29 fixed to the side surface of the worm wheel 19 and a tip 31 protruding downward from the movable holder 13. The meandering correction roller 3 is a cylindrical body that is rotatably supported by a support shaft 33 fixed to the tip 31 of the swing arm 21. 1 and 3 show an example in which the meandering correction roller 3 is in contact with the lower surface of the strip 1, the meandering correction roller 3 may be in contact with the upper surface of the strip 1.

  When the meandering correction roller driving device 5 is installed in a factory or the like, the posture thereof is arbitrary, but in the following description, it is assumed that the axial direction of the main shaft 15 coincides with the horizontal direction, and as shown in FIG. Meandering upright, the meandering correction roller 3 takes a horizontal posture. Such a position of the meandering correction roller 3 is referred to as a “neutral position”. Also, alternate long and short dash lines X and Y indicate the axial direction of the main shaft 15 and the axial direction of the shaft portion 27 of the worm wheel 19, respectively.

  Further, as shown in FIG. 4, the meandering correction roller driving device 5 includes a rotating machine 35 for inputting a rotational force to the main shaft 15, a meandering detecting means 37 for detecting the displacement of the strip 1 and sending a detection signal, Control means 39 for operating the rotating machine 35 based on the detection signal of the meandering detection means 37.

  As shown in FIG. 1, the rotating machine 35 is a servo motor connected to the main shaft 15 via a speed reducer 38 fixed to the housing 7 with a fixing bracket 36, and the output of the rotating machine 35 is the speed reducer 38. Is transmitted to the movable holder 13 as a rotational force decelerated at. The driver 43 of the rotating machine 35 is an electric circuit that sets the power supplied from the power source 41 to the rotating machine 35 in accordance with a command from the control means 39.

  The meandering detection unit 37 is not particularly limited, but may be, for example, an optical sensor in which a light emitting unit and a light receiving unit are opposed to each other. In this case, it is desirable that the optical sensor be as close as possible to the core of the winding device, and the optical sensor is strip-shaped so that one edge 45 in the width direction of the strip 1 passes between the light-emitting portion and the light-receiving portion. Position relative to the object 1. Further, a microcomputer is applied as the control means 39, and the degree to which one edge 45 of the strip 1 blocks the light reaching the light receiving part from the light emitting part of the optical sensor is controlled as the voltage of the detection signal sent from the light receiving part. The means 39 is made to recognize.

  If the voltage of the detection signal sent from the light receiving portion of the optical sensor is stored in the control means 39 as the reference value when the belt 1 is traveling straight without meandering, this reference value and the belt 1 The control means 39 can calculate the magnitude of the displacement of the one edge 45 by comparing the voltage of the detection signal when the one edge 45 of the strip 1 is displaced due to the meandering. Based on the voltage of the detection signal, the control means 39 controls the driver 43 of the rotating machine 35 to set the speed, angle, and direction in which the rotating machine 35 rotates the main shaft 15 as follows.

  That is, the meandering detection means 37 detects that the meandering correction roller 3 in the neutral position is in rolling contact with the strip 1 as shown in FIG. 1 and the strip 1 is displaced in a direction biased to one edge 45 thereof. Then, the rotating machine 35 rotates the main shaft 15 in the direction of arrow [+ α] shown in FIG. As a result, the worm wheel 19 rotates around the alternate long and short dash line X together with the movable holder 13, and the meandering correction roller 3 together with the swing arm 21 turns about 15 ° in the direction of the arrow [+ α] around the alternate long and short dash line X. Become.

  Simultaneously with the operation described here, the planetary gear 11 supported by the movable holder 13 rotating as described above revolves according to the fixed gear 9 shown in FIG. 2 and moves toward the position represented by the virtual diagram 11 ′. Moving. In this process, the planetary gear 11 itself rotates (spins), so that the worm wheel 19 rotates in the direction of the arrow [+ β] shown in FIG. A maximum of 5.5 ° is turned around the chain line Y. Thus, the meandering correction roller 3 is inclined with its one end 47 higher than the other end 49 by the amount of rotation of the worm wheel 19 around the alternate long and short dash line Y, and the belt-like object 1 is placed at the other end 49 of the meandering correction roller 3. Guide you towards. Thereby, the displacement of the strip 1 is reduced and canceled. The control means 39 rotates the spindle 15 in the direction of the arrow [−α] as the displacement of the strip 1 decreases, and returns the meandering correction roller 3 to the neutral position.

  Alternatively, when the meandering detecting means 37 detects that the strip 1 shown in FIG. 1 is displaced in the direction deviating toward the other edge 46, the rotating machine 35 moves the main shaft 15 in the direction of the arrow [-α] shown in FIG. Rotate to As a result, the meandering correction roller 3 in the neutral position turns around the one-dot chain line X in the direction of the arrow [-α] by 15 ° at the maximum. At the same time, the planetary gear 11 revolves in the direction of the arrow [−α] shown in FIG. 2 according to the fixed gear 9, and the worm 17 rotates together with the planetary gear 11, so that the worm wheel 19 rotates and the meandering correction roller 3 moves along the alternate long and short dash line Y. Turn around 5.5 ° in the direction of arrow [-β]. Thus, the meandering correction roller 3 is inclined with the other end 49 higher than the one end 47 by the amount of rotation of the worm wheel 19 around the one-dot chain line Y, and the strip 1 is directed toward one end 47 of the meandering correction roller 3. I will guide you. Thereby, the displacement of the strip 1 is reduced and canceled. The control means 39 rotates the main shaft 15 in the arrow [+ α] direction as the displacement of the strip 1 decreases, and returns the meandering correction roller 3 to the neutral position.

  Further, the above-described operation in which the meandering correction roller 3 pivots around the alternate long and short dash line X positively increases the distance that the meandering correction roller 3 rolls and contacts the belt-like object 1, so that the meandering correction roller 3 moves the belt-like object 1. This is to amplify the guiding action. Moreover, it is preferable that the speed at which the rotating machine 35 rotates the main shaft 15 increases as the strip 1 is greatly displaced in a short time.

  Since the meandering correction roller driving device 5 described above can perform the operation of the meandering correction roller 3 without depending on the cam mechanism, a conventional spring for pressing the cam follower on the cam is unnecessary, and the cam follower is attached to the cam. Since it is not the structure which carries out sliding contact, the frictional force which prevents smooth operation | movement of the meandering correction | amendment roller 3 between both does not arise. Moreover, there is an advantage that manufacture, assembly, or adjustment of the fixed gear 9, the planetary gear 11, the worm 17 and the worm wheel 19 is easier than the conventional cam mechanism.

  It should be noted that the present invention can be implemented in various improvements, modifications, or variations based on the knowledge of those skilled in the art without departing from the spirit of the present invention. Further, any of these forms belongs to the scope of the present invention. The above description is based on the assumption that the tooth profile of the worm 17 is right-handed, but by reversing this, when the main shaft 15 rotates in the arrow [+ α] direction, the worm wheel 19 moves in the arrow [−β] direction. When the main shaft 15 rotates in the direction of the arrow [−α], the worm wheel 19 may rotate in the direction of the arrow [+ β]. Further, the above 15 ° and 5.5 ° are design values and may be increased or decreased. The worm wheel 19 does not have to be chopped all around. Two or more meandering correction rollers 3 may be attached to the swing arm 21.

  The present invention is not limited to battery element materials or capacitor separators, and is a useful technique for winding strips of any material.

  DESCRIPTION OF SYMBOLS 1 ... Band-shaped object, 3 ... Serpentine correction roller, 5 ... Drive apparatus of meandering correction roller, 7 ... Housing, 9 ... Fixed gear, 11 ... Planetary gear, 13 ... Movable holder, 15 ... Main shaft, 17 ... Worm, 19 ... Worm wheel, 20 ... bearing member, 21 ... swing arm, 23 ... insertion port, 24, 25, 27 ... shaft, 29 ... base end, 31 ... tip, 33 ... spindle, 35 ... rotating machine, 37 ... meandering detection Means 38 ... Reducer 39 ... Control means 41 ... Power source 43 ... Driver 45, 46 ... Edge part 47 ... One end 49 ... Other end

Claims (2)

A meandering correction roller that detects a displacement of the belt in a process of traveling the belt, and operates a meandering correction roller that is in rolling contact with the belt to guide the belt in a direction that cancels the displacement of the belt. A driving device comprising:
A fixed gear fixed to a housing; a planetary gear meshing with the fixed gear; a movable holder that rotatably supports the planetary gear; and the movable holder rotated in a direction in which the planetary gear revolves according to the fixed gear. A main shaft, a worm connected to the planetary gear, a worm wheel rotatably supported by the movable holder and meshing with the worm, and a swing arm connected to the worm wheel and supporting the meandering correction roller. A meandering correction roller driving device.   A rotating machine that inputs a rotational force to the main shaft, a meandering detecting unit that detects a displacement of the belt and sends a detection signal, and a control unit that controls an angle at which the rotating machine rotates the main shaft based on the detection signal. The meandering correction roller driving device according to claim 1, comprising:

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