KR930011633B1 - Apparatus for transmitting power to fabric feeding roll of circular kinitting machine - Google Patents

Abstract

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Description

Power transmission device for letter conveying rolls in circular knitting machines

1 is a front view showing the entire structure of the circular knitting machine in a state where the knitting portion is omitted.

2 is a perspective view of the winding unit.

3 is an overall front view of the side plate on which the power transmission device of the rotating frame is mounted.

4 is an overall rear view of the side plate on which the power transmission device of the rotating frame is mounted.

5 is an exploded perspective view showing the structure of the temporary change pulley.

6 is a perspective view showing a transmission system for transmitting rotation from the driven side pulley to the transfer roll.

7 is a front view showing a control method of the transmission.

* Explanation of symbols for main parts of the drawings

A: Letter 2: Winding section

13, 14, 15: letter feed roll 22: power transmission device

31: transmission 33: drive pulley

34: driven side pulley 35: rotation transmission belt

37, 40: pulley interval adjusting means 41, 42: loosening fixing means

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission device for feeding a letter to a roll in a circular knitting machine, and the knitting part of which is a cylindrical letter that has been ejected from the knitting portion of the circular knitting machine The present invention relates to a power transmission device for transmitting rotational driving force to a letter feed roll for conveying to a winding section disposed at a lower position.

The circular knitting machine generally has a knitting portion having a cylinder cylinder which is rotationally driven, and a winding portion which is disposed at a lower position of the knitting portion and winds a cylindrical letter that is unwound from the knitting portion. The winding unit is supported in a suspended state so as to rotate, and is connected to the cylinder cylinder via an interlock mechanism, and rotates at a rotational speed that is consistent with the speed of the letter drawn out from the knitting unit.

And this winding part is provided with the letter feed roll for sending out the letter woven by the knitting part from the knitting part in the position near the knitting part side, and conveying it into a winding part. The rotational drive of the letter feed roll is performed by transferring the rotation of the winding portion to the roll via a power transmission device. This power transmission device is provided with a rotational transmission for allowing the rotational speed of the letter feed roll to be adjusted according to the knitting speed of another letter by a knitting structure or the like.

As this rotational transmission, as previously disclosed, for example, in Patent Application Publication No. 86-2115, a belt is attached to a pair of pulleys which are at least one temporary changeable pulley, It is known to adjust the rotational speed of the letter feed roll by adjusting (iii).

However, in the pulley type rotary transmission, in general, it is necessary to adjust the speed ratio by adjusting the belt support diameter of the pulley and the adjustment for the belt to be in proper tension in the shift of the letter feed roll. In a conventional pulley type transmission, the belt tension can also be adjusted by adjusting the belt support diameter of both pulleys, and each pair of pulleys is loosened and tightened each time according to the nature and type of the letter being pulled out. Since the adjustment had to be repeated, there was a problem that the manpower and time were required for adjustment in the ordinary worker who is not familiar with such a complicated complex adjustment operation.

In addition, if some elongation occurs in the belt by long term use or the like, the belt is in a relaxed state in which the speed ratio is adjusted to a desired speed ratio. Thus, if the belt support diameter of the pulley is adjusted to hold this relaxed foot, the speed ratio is changed this time. Since such a dilemma occurs, there is also a problem that the speed ratio cannot be adjusted with high accuracy depending on the belt to be used or its dimensional state.

The present invention eliminates the above-mentioned drawbacks and facilitates the adjustment of the rotational speed of the letter transfer toll. Furthermore, even in the case of an error in the length of the belt, the circular knitting machine capable of performing this adjustment with high accuracy An object of the present invention is to provide a power transmission device for a letter feed roll.

In the above object, the present invention rotates the drive side pulley for rotating the drive by receiving the driving force from the drive source side to the power transmission system to the letter transfer roll for transferring the letter unfolded from the knitting portion to the take-up portion, and the letter transfer roll side A power transmission device for a letter feed roll in a circular knitting machine provided with a rotation transmission device having a driven-side pulley for transmitting a load and a rotation transmission belt spanning at least one of the pair of pulleys, wherein the pulley is a changeable pulley. A pulley gap adjusting means for relatively approaching and moving the distance between the rotational shafts of both pulleys in order to make the belt spanned between the two pulleys relatively constant, and a distance between the rotational axes of the two pulleys in the tensioned state of the belt To the roll for conveying a letter in a circular knitting machine And a power transmission device to the base.

In the above configuration, the rotational speed of the letter feed roll is controlled as follows. That is, the fixed state by the unfastening means is released, and the space | interval between both pulleys can be changed freely. Then, the belt support diameter of the temporary change pulley is adjusted so as to have a predetermined speed ratio in that state. Thereafter, the pulley is moved relative to each other in the half direction by the pulley spacing adjusting means to make the belt taut. Next, the pulley is fixed in the tight state by the fixing means. By the above, adjustment of the rotational speed of a feed roll is complete | finished.

Next, an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1 and FIG. 2 which show the winding part part of a circular knitting machine, (1) is a fixed frame which supports a knitting part, (2) is a winding part. The fixed frame 1 has a three-way radial bottom member 3 disposed on the bottom surface and three legs 4 mounted in a standing position at the tip of the bottom member 3, The head 5 is supported by the upper end of the leg 4. In the upper position of the head 5, a knitting portion (not shown) including a cylinder cylinder is disposed.

The winding part 2 has an upward c-shaped rotating frame 9 connecting the lower ends of the left and right side plates 6 and 7 with a connecting bar 8, and the rotating frame 9 has a fixed frame 1. ) Is supported in a suspended state. The rotary frame 9 is connected to the cylinder cylinder of the knitting portion via an interlock mechanism not shown, and rotates at the same speed as the cylindrical letter A that is interlocked with the cylinder cylinder and is ejected from the knitting portion. It consists of

The reel roll 10 extends between the lower end portions of both side plates 6 and 7 of the rotating frame 9 so as to move upward and downward. 11), the letter A is wound on the reel roll 10 by the rotation of the precushion roll 11, and the amount of winding of the letter A is increased so that the reel roll 10 is rolled. It is supposed to move upwards.

In addition, three letter feed rolls 13, 14, and 15 are disposed between the upper end portions of both side plates 6 and 7 in a parallel adjacent state. The roll 13 located at one side is a driving roll, and as the roll 13 rotates, as shown in FIG. 4, the other two rolls are formed through the gears 16, 16, and 16. 14 and 15 are rotated at the same speed as the driven roll.

The support of these three feed rolls 13, 14, 15 depends on the following aspect. That is, as shown in FIG. 4, the rocking plate 18 is mounted on the inner surface of the upper end of both side plates 6 and 7 so that it can rock up and down in the middle part, and is located in this rocking center position. In addition, the feed drive roll 13 is supported, and the other 2 feed driven rolls 14 and 15 which are adjacent to the drive roll 13 are supported by the swinging plate 18. Then, the swinging plate 18 is applied with a force in the direction of lowering the driven rolls 14 and 15 with the spring 19, and is normally held in the contact position by being in contact with the contact piece 20. It is supposed to be.

Then, in order to transmit the rotation of the rotary frame 9 to the letter feed drive roll 13, the following power transmission device 22 is provided.

That is, in this power transmission device 22, as shown in FIG. 1, the floating sun bevel gear 23 is mounted on the upper surface of the center part of the bottom member 3 of the fixed frame 1, and the rotating frame The rotating shaft 24 protrudes inward from the inner surface of the lower end of one side plate 6 of (9), and the planetary bevel gear 25 provided at the distal end of the shaft 24 is the sun bevel gear 23. ) Is engaged. Then, as shown in FIG. 3, the gear train 26 in the up-down direction is disposed on the outer surface of the lower half of the side plate 6, and the lowermost input gear 26a is the proximal end of the rotary shaft 24. It is connected to the base station. As a result, the planetary bevel gear 25 rotates while the planetary bevel gear 25 revolves around the sun bevel gear 23 on the fixed frame 1 side as the rotary frame 9 rotates, thereby rotating the shaft 24. Is rotated, and this rotation is transmitted from the input gear 26a of the gear train 26 to the output gear 26b located at the top of the gear train 26.

On the other hand, as shown in FIG. 1, FIG. 3, FIG. 4, and FIG. 6, the wheel wheel 28 which is integrally rotated coaxially with this is connected to the end of the drive roll 13 for letter transport. The wheel 29 is engaged with the wheel wheel 28, and the rolls 13, 14, 15 for transport are rotated by the rotation of the wheel 29.

And, as shown in Fig. 3, the pulley between the output gear 26b and the pin 29 to transmit the rotation of the output gear 26b at the top of the gear train 26 to the pin 29. The type transmission 31 is provided.

The pulley type transmission 31 includes a drive side pulley 33 which is rotated by the rotation of the output gear 26b at the top of the gear train 26 and a driven side pulley 34 which transmits rotation to the fan 29. ) And a belt 35 wound around them.

As the drive shaft pulley 33, a non-changeable pulley that cannot adjust the belt support diameter is used, and as a driven side pulley 34, a variable change pulley capable of adjusting the belt support diameter is used, and the drive side pulley 33 is used. It is supported so that the driven-side pulley 34 can approach and move, and the belt 35 can be adjusted in a taut state by the movement of this drive-side pulley 33.

The approach and transfer movement for belt adjustment of the drive side pulley 33 is realized by the following pulley interval adjusting means. That is, as shown in FIG. 3, the pulley moving arm plate can be rotated independently of the output gear 26b by using the rotation axis of the gear 26b as the rotation axis in the rear portion of the output gear 26b of the gear train 26. (37) is supported. The arm plate 37 has a disc portion 38 and a protrusion 39 integrally protruding outward from one side of the peripheral end of the disc portion 38. The arm plate 37 is supported concentrically with the output gear 26b with the center of the disc portion 38 as an axis, and is supported by the protrusion 39 so that the driving side pulley 33 can rotate. . As a result, the driving side pulley 33 rotates the arm plate 37 to move and move relative to the driven side pulley 34 around the pivot axis of the arm plate 37. An operating lever 40 is attached to the tip of the protrusion 39 for the pivoting operation of the rock plate 37.

Then, in order to fix the driving side pulley 33 at a predetermined position where the belt 35 is in a taut state as the unfastening means, the circumferential direction on one side of the peripheral end of the disc portion 38 of the arm plate 37 is fixed. An arc-shaped slit 38a of a predetermined length is formed, and the fastening handle 41 is screwed to the side plate 6 through the slit 38a, and the rock plate 37 is formed by rotating the handle 41. ) Is fastened to the side plate 6 and is fixed in a non-rotatable state. That is, by making the fastening handle 41 unwind, the arm plate 37 is rotated freely, and the pulley spacing can be adjusted. Moreover, by making the handle 41 fasten, the rotation of the arm plate 37 is regulated, and the space | interval between pulleys is kept constant. Further, an arc-shaped slit 38b of a predetermined length along the circumferential direction is formed on the other side of the peripheral end of the disc portion 38 of the arm plate 37, and the fastening bolt 42 is formed through the slit 38b. It is screwed into the side plate 6. Thereby, the position of the drive side pulley 33 is determined and the fastening bolt 42 is fastened in the state which fastened the fastening handle 41, and the rotational motion of the arm plate 37, and also the drive side pulley 33 is carried out. Can regulate the movement of the plant stably and firmly.

The following structure is employed to transmit the rotation of the output gear 26b at the top of the gear train 26 to the drive side pulley 33 which is changed in position as described above. That is, as shown in FIG. 3, the transmission gear 43 is integrally rotated with the pulley 33 concentrically with the driving side pulley 33 at the distal end of the protrusion 39 of the arm plate 37. Equipped with. And this transmission gear 43 meshes with the output gear 26b. As a result, when the driving pulley 33 moves closer to the driven side pulley 34, the transmission gear 43 revolves around the output gear 26b with a solar gear in the form of a standing gear. Therefore, even if the drive pulley 33 stops at any position, the transmission gear 43 is always kept in mesh with the output gear 26b, and the gear train 26 and the drive in the adjustment operation of the pulley spacing. The distance can be adjusted without having to touch the electric system between the side pulleys 33.

On the other hand, the temporary change pulley 34 on the driven side has a disk 45 having a spiral groove 45a on the inner surface as shown in FIG. 5, and a plurality of grooves 46a extending radially on the inner surface. A plurality of belt support pieces 47 are disposed in the circumferential direction between the disc 46 having the two sides, and both ends 45a, 46a of both ends of the pin 47a mounted on each belt support piece 47 are provided. ), And by rotating both the discs 45 and 46 relative to each other, the entire belt support piece 47 is simultaneously displaced in the radial direction, whereby the belt support diameter is adjusted. In addition, 48 is a fastening handle, and it rotates and fastens both the discs 45 and 46 in the state which pinched the belt support piece 47, so that the discs 45 and 46 of the The relative rotation is regulated, and the belt support diameter is fixed.

As shown in FIGS. 3 and 4, the driven side pulley 34 sandwiches the pivotal center on the swinging plate 18 so as to be opposite to the transfer driven rolls 14 and 15 for conveyance. It is supported to rotate at the end. In this way, the driven side pulley 34 is supported on the swinging plate 18 when the knitting speed of the letter A is slightly slower than the feeding speed by the rolls 13, 14, and 15. By virtue of the tension created by the letter A, the swinging plate 18 is oscillated against the biasing force of the spring 19, thereby causing the driven side pulley 34 to be displaced close to the driving side pulley 33, thereby providing a belt ( This is for slipping 35 so that rotation of the drive side pulley 33 is not transmitted to the driven side pulley 34. Then, in order to transmit the rotation of the driven pulley 34 to the fin 29, the gearbox 49 has the swing plate 18 side as shown in FIGS. 3, 4, and 6 therebetween. It is installed in a supported state. In this gearbox 49, a bevel gear 49a connected to the driven side pulley 34 and a bevel gear 49b provided on the jaw 29 side are accommodated in engagement with each other. That is, the rotation of the driven pulley 34 is transmitted to the shock 29 through both bevel gears 49a and 49b in the gearbox 49. In addition, the gearbox 49 is supported so as to be able to rotate together with the jaw 29, and is made to release engagement with the jaw wheel 28, while being held in the engaged state with the stopper 50. .

Reference numeral 52 is a lever for adjusting the letter clamping force between the transfer rolls 13, 14, and 15. In addition, as shown in FIG. 1, in order to rotationally drive the precushion roll 11, the other side plate 7 is provided with a pair of upper and lower sprockets 55 and 56, and an upper sprocket 55 The lower sprocket 56 is connected to the precushion roll 11 while being connected to the transfer drive roll 13 for transport, and the chain 57 is interposed between the two sprockets 55 and 56. .

In the circular knitting machine, the cylinder cylinder is rotationally driven in the knitting portion to form the letter A, so that the rotation of the cylinder cylinder is rotated by the rotary frame 9, the planetary bevel gear 25, the rotary shaft 24, and the gear. Roll for letter transfer 13 through row 26, drive side pulley 33, belt 35, driven side pulley 34, bevel gear in gearbox 49, wheel 29, wheel wheel 28. , (14) and (15), the letter from the knitting portion is sent out by the letter transfer rolls (13), (14), and (15) to the reel roll (10) in the winding portion (2). Transferred.

Then, if the speed of weaving the letter A from the knitting portion changes by changing the network structure of the letter A to be knitted or the like, the transmission device 31 is adjusted as shown in FIG. The rotation speed transmitted to the rolls 13, 14 and 15 is changed. In other words, the fastening operation handle 41 and the fastening bolt 42 are loosened, whereby the driving side pulley 33 is freely approached and moved with respect to the driven side pulley 34. Then, the belt support diameter of the driven side pulley 34 is set to a diameter in which the knitting speed of the letter A to be knitted next matches the rotation speed of the conveying rolls 13, 14, and 15. do. Subsequently, the drive side pulley 33 is moved to the direction away from the driven side pulley 34 by the operation lever 40 to bring the belt 35 into a taut state. Then, the fastening handle 41 and the fastening bolt 42 are fastened to the end, and the drive pulley 33 is fixed at the position. By the above adjustment operation, the rotational speeds of the transfer rolls 13, 14 and 15 are adjusted to match the knitting speed of the next letter.

In addition, when it is necessary to change the rotation speed of the feed rolls 13, 14, and 15 beyond the adjustment range by the transmission device 31, by replacing the gear of the gear train 26, It can easily correspond to it.

As described above, the power transmission device for the letter feed roll in the circular knitting machine of the present invention relatively moves and moves the distance between the rotational axes of both pulleys in order to make the belt spanned between both pulleys. The pulley interval adjusting means and the pulley fixing means for maintaining a constant distance between the rotation axis of both pulleys in the tensioned state of the belt is provided.

Therefore, in the adjustment operation of the rotational speed of the letter feed roll, the tensioning of the belt after adjustment of the speed ratio by the temporary change pulley is achieved by a simple operation of adjusting the gap distance between the pulleys, and the rotational speed of the letter feed roll. The adjustment of can be made easy even if it is not skilled.

Further, the tensioning of the belt in the speed ratio adjustment is performed by changing the distance between the pulleys as described above, so that the speed ratio does not change accordingly. When it is extended | stretched or when the belt length has an error to some extent, adjustment of the rotation speed of a roll can be performed with high precision.

Claims (1)

Rotation is transmitted to the drive side pulley which is driven by the driving force from the driving source side, and the rotation side to the power transmission system to the letter feed roll which transfers the letter unfolded from the knitting part to the take-up part. To a roll for conveying a letter in a circular knitting machine provided with a rotation transmission device having a rotational transmission belt spanning between the driven side pulley and a pair of pulleys at least one of which is a changeable pulley. A power transmission device comprising: a pulley spacing means for relatively approaching and displacing a distance between rotational axes of both pulleys in order to make the belt spanned between the two pulleys relatively, and the two pulleys in the tensioned state of the belt; Power to the roll for letter transfer in the circular knitting machine, characterized in that the unwinding fixing means is provided for maintaining a constant distance between the rotation axis. Month device.