JP2012001850A - Traverse device of spinning frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traverse device which can improve the workability when shifting the traverse speed and prevent the unstable traverse movements during its operation.SOLUTION: A traverse device 10 comprises: a reciprocating driving part 13 having a slider 12 that reciprocates in parallel to a traverse direction of a traverse bar 11; a swing lever 14 in which a first end is connected to the slider 12 and a second end is connected to the traverse bar 11; and a swing lever support part capable of adjusting the position of the swing center (an axis 23a) of the swing lever 14 in orthogonal to a direction in which the traverse bar 11 extends. A connecting part of the first end of the swing lever 14 and the slider 12 and a connecting part of the second end of the swing lever 14 and the traverse bar 11 are both configured so that the connected positions are adjustable in accordance with the adjust movements of the swing lever support part.

Description

  The present invention relates to a traverse device for a spinning machine.

  In the spinning machine, the roving yarn is drafted by a drafting device and then wound on a bobbin. When drafting is performed in a state in which the roving yarn hits the same part of the draft roller, wear of the roller cot covered by the draft roller is unevenly advanced. Therefore, in order to make the wear of the draft roller due to the roving yarn uniform, a traverse device for reciprocating (traversing) the trumpet for guiding the roving yarn to the draft roller in the longitudinal direction of the draft roller with a predetermined width is provided.

  Incidentally, the traverse amount of the roving yarn may be changed depending on the spinning conditions and the like. In general, if the fleece has a small draft ratio and is thick, the contact surface with the draft roller (or apron) will be wide, so the amplitude will be widened. If the fleece has a large draft ratio, the contact surface will be narrow and the amplitude will be narrow. The amount is set narrower.

  Further, since the movement of the trumpet is stagnated in the vicinity of the turning point of the traverse, the draft roller is accelerated in wear near the turning point. Therefore, if the traverse amount (traverse width) is kept constant, the vicinity of the turning point is worn first, resulting in uneven wear. The change of the traverse amount also has the meaning of preventing the bias of wear near the turning point by changing the turning position of the traverse.

  An apparatus shown in FIG. 4 has been proposed as a traverse apparatus for a spinning machine that can easily change the traverse amount (see Patent Document 1). In the traverse device of Patent Document 1, a traverse bar 62 to which a trumpet 61 for guiding the roving yarn R is fixed at a predetermined interval is provided so as to be able to reciprocate in parallel with the draft roller 63. When the disc-shaped eccentric cam 64 rotates eccentrically, the traverse bar 62 is reciprocated in parallel with the draft roller 63 via a cam follower 65 that contacts the cam groove 64a. The eccentric cam 64 is formed with three sets of bolt insertion holes 66, 67, 68, and the eccentric cam 64 is fastened to the support plate 71 fixed to the upper end of the shaft 70 by a bolt 69 using one set. Fixed. The three sets of bolt insertion holes 66, 67, 68 are formed such that the centers between the two points positioned at the shaft center of the shaft 70 are shifted by different distances from the shaft center of the eccentric cam 64. The traverse amount is changed without removing the eccentric cam 64 by changing the bolt insertion holes 66, 67, 68 to be used. A worm wheel 72 is fitted to the shaft 70 so as to be integrally rotatable, and the worm wheel 72 is engaged with a worm 74 fitted to a drive shaft 73. The drive shaft 73 is driven to rotate during machine operation by a back bottom roller (not shown).

  Moreover, the apparatus shown in FIG. 5 is proposed as a traverse apparatus which traverses a traverse bar using a link mechanism, without using an eccentric cam (refer patent document 2). In the traverse device of Patent Document 2, the first end of the swing lever 80 is connected to the traverse bar 81 with a pin 82, and the second end is connected to the first end of the connection link 83 with a pin 84. The connection link 83 is pin-connected to the crank 85 at the second end. The swing lever 80 has a long hole 80a and is swung around a shaft 86 passing through the long hole 80a. In this apparatus, the amount of traverse is changed by changing the position of the support portion 87 that supports the shaft 86 and changing the ratio of the distance from the shaft 86 to the pin 82 and the distance from the shaft 86 to the pin 84. Is possible.

JP-A-8-291429 French published patent FR-A1-1220144

  The traverse device described in Patent Document 1 can change the amount of traverse without removing the eccentric cam 64, but it is necessary to fasten and fix the bolt 69 in a different bolt insertion hole. It is necessary to insert and tighten the holes. In this operation, a hand must be put in a drive unit that is normally grease-lubricated, and the workability is poor.

  In addition, the traverse device described in Patent Document 2 can change the traverse amount of the traverse bar 81 by changing the position of the support portion 87 that supports the shaft 86. However, since the shaft 86 always slides in the long hole 80a of the swing lever 80 during operation, the swing center position of the swing lever 80 is not stable, and the traverse motion may be unstable. There is. Further, when the drive portion of the swing lever 80 is a groove cam instead of a crank mechanism, the movement of the trumpet is linear, and the wear of the roller cot of the back roller is made constant in the length direction of the roller. The trumpet moves in a curvilinear shape due to the change, and causes uneven wear.

  An object of the present invention is to provide a traverse device for a spinning machine that can improve workability when changing the amount of traverse and can prevent the behavior of traverse motion from becoming unstable during operation. is there.

  In order to achieve the above object, the invention according to claim 1 is directed to a reciprocating drive unit having a moving body that reciprocates in parallel with a traverse direction of a traverse bar, a first end portion connected to the moving body, A swing lever having two ends connected to the traverse bar, and a swing lever support that can move and adjust the swing center of the swing lever in a direction perpendicular to the extending direction of the traverse bar. . The connecting portion between the first end portion of the swing lever and the moving body and the connecting portion between the second end portion of the swing lever and the traverse bar corresponds to the movement adjustment of the swing lever support portion. Thus, the connection position can be adjusted. Here, “connected” includes a case where the connecting portion is directly connected to the moving body or the traverse bar, and a case where the connecting portion is indirectly connected via the connecting member.

In the present invention, the traversing amount of the traverse bar includes the distance from the swing center (rotation center) of the swing lever to the connecting portion with the moving body that is the driving point of the drive side, and the traverse from the swing center of the swing lever. It is determined by the ratio to the distance to the connecting portion with the traverse bar, which is the side action point. The ratio can be changed by moving and adjusting the position of the swing lever support portion in a direction orthogonal to the direction in which the traverse bar extends. The movement adjustment of the swing lever support portion can be performed without putting a hand on the grease lubricated drive portion. Therefore, workability when changing the traverse amount can be improved, and the swing center of the swing lever does not slide with respect to the swing lever during operation. It is possible to prevent the behavior of the traverse motion from becoming unstable.

  According to a second aspect of the present invention, in the first aspect of the present invention, the swing lever includes a long hole that constitutes a connecting portion with the moving body and a connecting portion with the traverse bar. In the present invention, when the swing lever swings, the force transmission from the driving-side force point to the swing lever and the force transmission from the swing lever to the traverse-side action point are performed through the long holes. Even if the traversing amount is changed to an arbitrary amount, the force is transmitted well.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the reciprocating drive unit reciprocates the movable body with a cam. When the swing lever is driven by a crank mechanism, the traverse bar cannot be linearly moved back and forth at a constant speed. However, in the present invention, the moving body is reciprocated by the cam, so that the traverse bar can be reciprocated linearly at a constant speed.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the cam is a cylindrical cam. Therefore, in this invention, the structure of a reciprocating drive part becomes simple compared with the structure which uses a disc cam.

  According to the present invention, it is possible to improve workability when changing the traverse amount, and it is possible to prevent the behavior of the traverse motion from becoming unstable during operation.

(A) is a schematic perspective view of the traverse apparatus of one Embodiment, (b) is a schematic diagram of a cylindrical groove cam. The schematic sectional drawing which cut | disconnected the traverse apparatus at the slider side from the support plate. The diagram which shows the relationship between the position of a slider and machine stand operation time. The principal part schematic perspective view of a prior art. Schematic of another prior art.

(First embodiment)
Hereinafter, an embodiment in which the present invention is embodied in a traverse apparatus that reciprocates (traverses) a trumpet for guiding a roving yarn to a draft roller in a ring spinning machine in the longitudinal direction of the draft roller will be described with reference to FIGS. .

  The traverse device is provided at the end of a spinning machine base (hereinafter simply referred to as the “machine base”), and the traverse bars on both the left and right sides of the machine base are driven by a single traverse device, so that they are formed almost symmetrically. .

  As shown in FIG. 1A, the traverse device 10 is oscillated by a reciprocating drive unit 13 having a slider 12 as a moving body that reciprocates in parallel with the traverse direction of the traverse bar 11, and the reciprocating motion of the slider 12. And a swing lever 14 for reciprocally moving the traverse bar 11. In the reciprocating drive unit 13, a pair of support shafts 17 are fixed in parallel to the traverse direction of the traverse bar 11 between a pair of support plates 15 and 16 fixed to the machine base, and the slider 12 slides on the support shaft 17. It is supported movably. Below the slider 12, a cylindrical groove cam 18 as a cylindrical cam is rotatably supported between the support plates 15 and 16 with its central axis parallel to the traverse direction of the traverse bar 11. A first end of a rotating shaft 19 (shown in FIG. 1B) of the cylindrical groove cam 18 penetrates the support plate 15 and is fixed to a portion protruding from the support plate 15 so that the input gear 20 can rotate integrally. Yes. The rotation of the back bottom roller is transmitted to the input gear 20 through a gear train (not shown), and is rotated in one direction during operation of the spinning machine.

  As shown in FIG. 2, the slider 12 has a cam follower 12 a that engages with the cam groove of the cylindrical groove cam 18 on the lower center side. The cylindrical groove cam 18 is formed with an endless cam groove 18a for reciprocating the slider 12 within a predetermined range as the cylindrical groove cam 18 rotates in one direction. The cam groove 18a is formed so that the slider 12 reciprocates once by one rotation of the cylindrical groove cam 18, and the slider 12 reciprocates at a constant speed as shown in FIG. In FIG. 3, the vertical axis represents the position of the slider 12, the left end means the position where the slider 12 is closest to the support plate 15, and the right end means the position where the slider 12 is closest to the support plate 16. To do.

  A pair of left and right swing levers 14 is provided, and a swing lever support member 22 fixed to a support block 21 fixed to the machine base so as to be movable and adjustable in a direction orthogonal to the direction in which the traverse bar 11 extends. The shaft 23a is supported so as to be swingable. The shaft 23 a is configured by a shaft portion of a bolt 23 that is inserted into and fixed to the swing lever support member 22. The support block 21 is fixed to the machine base via a support bracket 24 that supports a back roller (not shown). The swing lever support member 22 is slidably supported with respect to the support block 21 and is fastened and fixed to the support block 21 via a bolt 25 at a desired position. The swing lever support member 22 and the shaft 23a constitute a swing lever support portion that can move and adjust the swing center of the swing lever 14 in a direction orthogonal to the direction in which the traverse bar 11 extends.

  The slider 12 is provided above the traverse bar 11, and the swing lever 14 is disposed so as to extend obliquely downward from the slider 12 side, and the first end projects against the slider 12 with respect to the slider 12. It is connected (engaged) via the provided pin 26. A long hole 14a is formed near the first end of the swing lever 14 so as to extend in the longitudinal direction, and the pin 26 is engaged with the swing lever 14 while being inserted into the long hole 14a.

  A long hole 14b is formed near the second end of the swing lever 14 so as to extend in the longitudinal direction thereof. A second end of the swing lever 14 is connected to the traverse bar 11 via a connecting rod 27. The first end of the connecting rod 27 is fixed to the end of the traverse bar 11 with bolts 28 and nuts 29. The second end portion of the connecting rod 27 is connected to the second end portion of the swing lever 14 via a connecting stud 30 penetrating the elongated hole 14b. As shown in FIG. 2, the connecting stud 30 is fixed by a nut 31, the connecting rod 27 is connected to the upper portion of the connecting stud 30, and the swing lever 14 is connected to the lower portion of the connecting stud 30. Yes.

  The long hole 14 a and the pin 26 constitute a connecting portion between the swing lever 14 and the slider 12. The long hole 14 b, the connecting stud 30, the connecting rod 27, the bolt 28 and the nut 29 constitute a connecting portion between the swing lever 14 and the traverse bar 11. Both connecting portions correspond to the movement adjustment of the swing lever support portion, that is, the movement adjustment of the shaft 23a, the connection position (engagement position) of the pin 26 with respect to the long hole 14a or the connection position with respect to the long hole 14b of the connection stud 30 The (engagement position) is configured to be adjustable.

Next, the operation of the apparatus configured as described above will be described.
During operation of the machine base, with the rotation of the back roller, the input gear 20 is rotated in a certain direction, and the cylindrical groove cam 18 is also rotated in a certain direction. When the cylindrical groove cam 18 rotates, the slider 12 reciprocates along the support shaft 17 in the direction in which the traverse bar 11 extends through the cam follower 12a engaged with the cam groove 18a. The slider 12 reciprocates once for each rotation of the cylindrical groove cam 18. As the slider 12 reciprocates, a force that causes the swing lever 14 to swing about the shaft 23 a acts on the first end of the swing lever 14 via the pin 26. Then, the traverse bar 11 connected to the second end of the swing lever 14 via the connecting stud 30 and the connecting rod 27 is reciprocated linearly.

  Since the cam groove 18a is formed in a shape in which the slider 12 moves at a constant speed, the slider 12 reciprocates at a constant speed as the cylindrical groove cam 18 rotates, and the swing lever 14, the connecting rod 27, and the like. The traverse bar 11 also reciprocates at a constant speed via. The slider 12 reciprocates at a constant traverse amount (traverse width) as the cylindrical groove cam 18 rotates, and the distance from the swing center of the swing lever 14 to the pin 26 that is the driving force point, The traverse amount of the traverse bar 11 is changed by changing the ratio of the distance from the swing center of the swing lever 14 to the distance from the connecting stud 30 that is the point of action on the traverse side.

  Since the swing lever support member 22 that supports the shaft 23a that is the swing center of the swing lever 14 is fixed to the support block 21, the swing center position of the swing lever 14 becomes unstable during operation. It is prevented. Further, the pin 26 is engaged with the swing lever 14 through the long hole 14a, and the connecting stud 30 is engaged with the swing lever 14 through the long hole 14b. Therefore, when the swing lever 14 swings, the transmission of force from the drive-side force point (pin 26) to the swing lever 14 and the force from the swing lever 14 to the traverse-side action point (connection stud 30). Transmission is done well.

  When the traverse width of the traverse bar 11 is changed, the swing lever support member 22 is moved along the support block 21 by a desired distance while the bolt 25 is loosened in a state where the machine base is stopped. The swing lever support member 22 is fixed to the support block 21 by tightening 25. Moreover, the nut 31 of the connection stud 30 is loosened to adjust the position of the connection stud 30. The position of the connecting stud 30 may be adjusted after the swing lever support member 22 is moved with the nut 31 loosened. Since the bolt 25 and the nut 31 are provided at a position where grease for lubricating the slider 12 and the cylindrical groove cam 18 does not adhere, even if the bolt 25 or the nut 31 is operated when changing the traverse width, Is avoided.

According to this embodiment, the following effects can be obtained.
(1) The traverse device 10 includes a reciprocating drive unit 13 having a moving body (slider 12) that reciprocates parallel to the traverse direction of the traverse bar 11, a first end connected to the slider 12, and a second end A swing lever 14 connected to the traverse bar 11 and a swing lever support portion (the swing lever support member 22 and the shaft 23a) are provided. The swing lever support portion is configured to be capable of moving and adjusting the swing center (shaft 23a) of the swing lever 14 in a direction orthogonal to the direction in which the traverse bar 11 extends. The connecting portion between the first end portion of the swing lever 14 and the slider 12 and the connecting portion between the second end portion of the swing lever 14 and the traverse bar 11 correspond to the movement adjustment of the swing lever support portion. It is configured to be adjustable. Therefore, workability when changing the traverse amount can be improved, and the behavior of the traverse motion can be prevented from becoming unstable during operation.

  (2) The swing lever 14 includes long holes 14 a and 14 b that constitute a connecting portion with the slider 12 and a connecting portion with the traverse bar 11. Therefore, when the swing lever 14 swings, the transmission of force from the driving-side force point (pin 26) to the swing lever 14 and the force from the swing lever 14 to the traverse-side action point (connection stud 30). Transmission is done well.

  (3) The reciprocating drive unit 13 reciprocates the slider 12 with a cam. Therefore, the configuration is simpler than the configuration in which the slider 12 is reciprocated by the crank mechanism. Unlike the configuration in which the slider 12 is reciprocally moved by the crank mechanism, the traverse bar can be linearly reciprocated at a constant speed by driving the slider 12 to reciprocate at a constant speed.

(4) The cam constituting the reciprocating drive unit 13 is a cylindrical cam. Therefore, the configuration is simpler than the configuration using the disc cam.
(5) Since the cylindrical groove cam 18 is used as the cylindrical cam, the configuration of the cam follower becomes simpler than when a cylindrical rib cam is used.

The embodiment is not limited to the above, and may be embodied as follows, for example.
A cylindrical rib cam may be used instead of the cylindrical groove cam 18. However, in the case of a cylindrical rib cam, it is necessary to equip the slider 12 with a cam follower 12a having a structure for sandwiching the rib, and the structure becomes complicated. Therefore, it is preferable to use the cylindrical groove cam 18.

  A disc groove cam may be used instead of the cylindrical groove cam 18. In the case of using the disk groove cam, the rotation axis of the disk groove cam is not parallel to the rotation axis of the back roller but is orthogonal, so it is necessary to transmit the rotation using a bevel gear or the like. It becomes complicated.

The cylindrical cam is not limited to a configuration in which the slider 12 reciprocates once by one rotation of the cylindrical cam, and may be configured to reciprocate twice by one rotation or three reciprocations by one rotation, for example. .
The reciprocating drive unit 13 for reciprocating linear movement of the slider 12 can be performed using a normal cam instead of a groove cam or a rib cam, but the structure is complicated.

A plurality of mounting holes may be provided instead of the long hole 14b on the connecting stud 30 side of the swing lever 14.
○ The long hole 14a on the pin 26 side of the oscillating lever 14 moves directly between the pin 26 and the oscillating lever 14. If a link mechanism that absorbs the displacement of the rotation is interposed, it is changed to a plurality of mounting holes. May be.

  The end of the traverse bar 11 may be connected to the swing lever 14 via the connection stud 30 without interposing the connection rod 27 between the traverse bar 11 and the connection stud 30.

  The driving of the cylindrical cam or the like is not limited to the configuration that transmits the rotation of the back bottom roller to the input gear 20 via the gear train. For example, a dedicated motor may be provided for driving the input gear 20.

The configuration in which the slider 12 (moving body) is reciprocated linearly within a predetermined range is not limited to a configuration using a cam.
The traverse device 10 is not limited to a traverse device that reciprocates a trumpet (coarse yarn guide portion) of a ring spinning machine. For example, the present invention may be applied to a traverse device that reciprocates a trumpet of a draft device of a rough spinning machine, or a traverse device that reciprocates a trumpet of a draft device of a binding spinning device or a composite yarn manufacturing apparatus. Moreover, you may apply to a winding device.

The following technical idea (invention) can be understood from the embodiment.
(1) In the invention described in claim 4, the cylindrical cam is a cylindrical groove cam.
(2) In the invention according to any one of claims 1 to 4, a pair of the traverse bar and the swing lever is provided, and the reciprocating drive unit drives both swing levers by one. .

  DESCRIPTION OF SYMBOLS 11 ... Traverse bar, 12 ... Slider as a moving body, 13 ... Reciprocating drive part, 14 ... Swing lever, 14a, 14b ... Long hole, 22 ... Swing lever support member which comprises rocking lever support part, 23a ... Similarly, a shaft, 18 ... a cylindrical groove cam as a cam and a cylindrical cam.

Claims (4)

A reciprocating drive unit having a moving body that reciprocates in parallel with the traverse direction of the traverse bar;
A swing lever having a first end connected to the moving body and a second end connected to the traverse bar;
A swing lever support that can move and adjust the swing center of the swing lever in a direction orthogonal to the direction in which the traverse bar extends;
The connecting portion between the first end of the swing lever and the moving body and the connecting portion between the second end of the swing lever and the traverse bar correspond to the movement adjustment of the swing lever support portion. A traverse device for a spinning machine configured to be capable of adjusting the connecting position.   2. The traverse device for a spinning machine according to claim 1, wherein the swing lever includes a long hole that forms a connection portion with the moving body and a connection portion with the traverse bar. 3.   The traverse apparatus for a spinning machine according to claim 1 or 2, wherein the reciprocating drive unit reciprocates the moving body by a cam.   The traverse device for a spinning machine according to claim 3, wherein the cam is a cylindrical cam.

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