JPH02286574A - Spindle drive device for covering machine and the like - Google Patents

Abstract

PURPOSE:To set the spindle speeds of groups different from each other by grouping spindles, arranging an electric motor for each group, fitting a drive pulley to the electric motor in such a way as to be changeable, and also providing a tension pulley. CONSTITUTION:Many spindles 6 pertaining to a covering machine and the like are grouped into each of the predetermined number, and one electric motor 17 is provided for each group. The spindles 6 are driven with an endless belt 16 actuated on the operation of the electric motor 17. Also, the outer diameter of a drive pulley 18 so fitted to the electric motor 17 as to be changeable is selected, thereby enabling the pertinent determination of the speed of the spindle 16 pertaining to each group. According to the aforesaid construction, the spindle speed can be selected to a desired number of revolutions for each group, and one covering machine or the like can concurrently manufacture many types of covering yarns and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is mainly used in a covering machine that wraps a polyamide, nylon, or other covering thread around a polyurethane elastic thread. In addition, the present invention can be applied to bobbin winders and the like.

(Prior technology) The basic structure of the covering machine is
This is known from Publication No. 2, etc. This covering machine has a multi-spindle structure equipped with a large number of core yarn bobbins, spindles, winding drums, etc.

The spindle supports the cover bobbin and rotates by itself, and the drive device for this spindle has conventionally been
It was as shown in the figure.

That is, a large number of spindles a are arranged on both sides of the covering machine, an endless belt d is wound between a driving pulley b arranged at one end of the covering machine and a driven pulley C arranged at the other end, and a large number of spindles a are arranged on both sides of the covering machine. An endless belt d is pressed against each spindle a using a tension roller e,
The drive pulley b was rotated by an electric motor (not shown), and the spindle a was rotated at high speed as the endless belt d rotated.

(Problems to be Solved by the Invention) However, the spindle drive device in the conventional covering machine described above has the following problems.

■ It is difficult to produce a wide variety of covering yarns with one covering machine. This is because the core yarn, cover material, number of twists during covering, etc. differ for each product, so it is necessary to rotate the spindle at a rotation speed suitable for covering each product, but with conventional spindle drive devices, all Since the rotational speed of the spindles is the same, it is difficult to produce a wide variety of covering yarns with one covering machine.

■ The endless belt becomes very long, and it is difficult to press it against each spindle with uniform pressure over its entire circumference, and the difference in tension between the tight side and slack side of the endless belt becomes large. Therefore, a slight difference in rotation occurs between the spindles. Therefore, there is a problem that the number of twists of the covering yarn varies slightly depending on the spindle, and the quality is not constant.

The present invention solves the above-mentioned problems, and provides a spindle drive device for a covering machine, etc., which can set the rotational speed of the spindle between each group to be significantly different, and which minimizes the rise in manufacturing costs. The purpose is to provide.

(Means for Solving the Problem) In order to achieve the above object, the present invention, in a spindle drive device such as a covering machine equipped with a large number of spindles, groups these spindles into groups of a predetermined number, and One electric motor is arranged, a drive pulley is attached to the electric motor in a replaceable manner, an endless belt is wound around the warp of all spindles belonging to the group, and a tension pulley, and the fixed position of the base end, which is the center of swing. The present invention is characterized in that the tension pulley is attached to an intermediate portion of an arm whose tip can be changed in a direction effective for removing slack in the endless belt, and whose tip is biased in a direction to remove slack in the endless belt.

(Function) According to the present invention, a large number of spindles included in a covering machine or the like are grouped into groups of a predetermined number, for example, 6 to 12, and one electric motor is arranged for each group. The spindle is rotated by a driven endless belt, and by selecting the outer diameter of the drive pulley that is replaceably attached to this electric motor, the rotation speed of the spindles belonging to the group can be determined as appropriate. can. Therefore, it becomes possible to select the desired rotational speed of the spindle for each group, and as a result, it becomes possible to simultaneously produce a wide variety of covering yarns and the like with one covering machine. In addition, since the length of the endless belt can be shortened, the pressure and tension on each spindle can be made uniform over the entire circumference, and the difference in rotation between spindles belonging to a group can be reduced to nearly zero, resulting in improved quality. can be achieved.

Further, according to the present invention, the fixed position of the base end, which is the center of swing, can be changed to a direction effective for removing slack in the endless belt.
A tension pulley is attached to the middle part of the arm whose tip is biased in a direction to remove slack in the endless belt, making it possible to adjust the tension of the endless belt as the diameter of the drive pulley changes. In order to appropriately select the spindle rotation speed for each group, it is possible to change the rotation speed of the electric motor using an inverter, but in this case, it is necessary to use an expensive inverter. However, considering that a large number of covering machines and the like are required, the overall manufacturing cost becomes extremely high. In contrast, according to the present invention, a constant speed electric motor is used, and the rotation speed of the spindle can be changed by replacing drive pulleys with different outer diameters, and the structure of the tension pulley etc. for adjusting the tension of the endless belt can be changed. Since it is also relatively simple, the increase in the overall manufacturing cost can be kept to a minimum.

Moreover, according to the present invention, the tension of the endless belt can be adjusted over a wide range. This is because, in addition to adjustment by swinging the arm, the amount of movement of the tension pulley can be increased by adjusting the fixed position of the base end of the arm. As a result, even when changing from one drive pulley to the other drive pulley with a very large difference in outer diameter,
The tension of the endless belt can be adjusted appropriately. As a result, it is possible to set the rotational speed of the spindle between each group to be significantly different.

(Example) FIG. 1 shows a double covering machine. As shown in FIG. 2, this double covering machine lets out the core yarn 2 supplied from the core yarn bobbin 1 upward, and moves it through the first draft roller 3, the hollow first spindle 4, the first centering guide 5, and the hollow core yarn bobbin 1. It is supplied from the first bobbin 11 attached to the first spindle 4 while passing through the second spindle 6, second centering guide 7, second draft roller 8, and traverse guide rod 9 and being wound onto the winding drum IO. The first cover yarn 12 and the second cover yarn 14 supplied from the second pobbin 13 attached to the second spindle 6 are wound around the core yarn 2 to cover it. The step of winding the first cover yarn 12 around the core yarn 2 involves the core yarn 2 passing through the hollow part of the first spindle 4 and moving upward.
This is done by winding the first cover yarn 12 that is let out from the first bobbin 11 as the first spindle 4 rotates. The step of winding the second cover yarn 14 around the core yarn 2 around which the first cover yarn 12 has been wound is to wrap the core yarn 2 in the above state passing through the hollow part of the second spindle 6 and moving upward. This is done by winding the second cover yarn 14 that is let out from the second pobbin 13 as the spindle 6 rotates.

In this way, the core yarn bobbin 1, the first spindle 4, the second spindle 6, the winding drum 10, etc. constitute a structure for one spindle. And the double covering machine simultaneously applies multiple core yarns 2 to the first cover yarn 12 and the second cover yarn 1.
It has a multi-spindle structure on which 4 windings can be wound, and specifically, it has a 160-spindle structure with 80 winding drums 10 on each side of the double covering machine.

In this embodiment, this double covering machine with a multi-spindle structure has two
It can be conceptualized by dividing it into 0 unit bodies 15.

In each unit body 15, eight second spindles 6 are driven by a drive device as shown in FIGS. 3 and 4. That is, four second spindles 6 are arranged at equal intervals on both sides of the double covering machine, and each spindle body 6a is rotatably supported by a bearing part 6b, and the word processor c of the spindle body 6a is Eleven endless belts 16 are hung. The endless belt 16 is wound around a drive pulley 18, each word processor c, and a tension pulley 19, which are removably attached to the electric motor 17, as shown in FIGS. 3 and 4, and the rotation of the electric motor 17 is transmitted to each second spindle 6. The rotation speed of the second spindle 6 is the same as that of the drive pulley 1.
It can be changed by changing the diameter of 8. For example, when lowering the rotational speed of the second spindle 6, the large-diameter drive boob 8 may be replaced with a small-diameter drive boob IJ18. At this time, the endless belt 16 becomes slack, but this slack is removed by the movement of the tension boot 9.

The tension boot 9 has a base end attached to the slider 21 via a pivot 20, and a dead weight 22 at the tip.
It is attached to the intermediate portion of the arm 23 where the tensile force of is applied. A support stand 24 that supports the electric motor 17
A guide rod 25 is attached to guide the slider 21, and a pulley 28 is attached to guide a rope 27 that connects the derad weight 22 and a hook 26 provided at the tip of the arm 23. The guide rod 25 is disposed in the same direction as the direction effective for removing slack in the endless belt 16, and the slider 2 guided thereby.
1 is provided with a set screw 29 and has a structure that can be fixed on the guide rod 25 at any position.

As mentioned above, the tension pulley 19 is attached to the middle part of the arm 23 that can swing around the pivot 20 of the slider 21, and the tension pulley 19 is applied to the tip of the arm 23 by the dead weight 22. The slack of the endless belt 16 that is wound around the belt can be constantly removed.

If the tension pulley 19 becomes slightly slack due to long-term use or if the change in the outer diameter is small when changing the drive pulley 18, the endless belt 16
Since the amount of adjustment to the tension is small, it is possible to apply an appropriate tension to the endless belt 16 by automatically swinging the arm 23 while leaving the slider 21 at the initial fixed position. On the other hand, if there is a large change in the outer diameter when changing the drive boob l718, the slider 21
onto the guide rod 25, and the endless belt 1
It is necessary to fix it at a position where the tension of 6 is appropriate. By doing so, an appropriate tension can be applied to the endless bell 6 by the two actions of changing the base end position of the arm 23 and swinging the arm 23. The relative position between the tip of the arm 23 and the pulley 28 is as follows:
The hook 26 is swingably attached to the tip of the arm 23 so that the lobe 27 is properly wound around the pulley 28 even with this change.

Note that the means for changing the base end position of the arm 23 is not limited to that shown in the above embodiment. Further, instead of the dead weight 22, a coil spring or the like may be used as a means for biasing the tip of the arm 23 in a direction to remove slack in the endless belt 16.

The eight first spindles 4 in each unit body 15 also include
They are arranged in the same manner as the eight second spindles 6 shown in FIG. 3, and are driven by the same electric motor, endless belt, tension pulley, arm, etc., and the tension is adjusted.

In the above embodiment, eight spindles are grouped and one electric motor is arranged for each group. can do. Furthermore, since a single covering machine winds one cover yarn around a core yarn, only one spindle is required for one spindle, but it goes without saying that the present invention can be applied to this case as well. Nor. Furthermore, the present invention can also be applied to a bobbin winder equipped with a large number of spindles.

(Effects of the Invention) According to the present invention, it is possible to significantly change the rotation speed between grouped spindles in one covering machine, etc., and it is possible to simultaneously produce a wide variety of products with one machine. It is possible to provide a spindle drive device such as a covering machine, which can reduce the increase in manufacturing costs to a minimum.

[Brief explanation of drawings]

Fig. 1 is a front view showing the entire embodiment of the present invention, Fig. 2 is a side view of the main part, Fig. 3 is a perspective view of the main part, Fig. 4 is a plan view of the main part, and Fig. 4 is a plan view of the main part. FIG. 5 is a schematic plan view of a conventional example. Spindle Warp Endless Belt Electric Motor Drive Pulley Arm

Claims (1)

[Claims] (1) In a spindle drive device such as a covering machine equipped with a large number of spindles, these spindles are grouped into groups of a predetermined number, and one
An endless belt is wound around the drive pulley that is replaceably attached to the electric motor, the warp of all spindles belonging to the group, and the tension pulley, and the fixed position of the base end, which is the center of swing, is A spindle drive for a covering machine, etc., characterized in that the tension pulley is attached to the middle part of an arm that can be changed in a direction effective for removing slack in an endless belt, and whose tip is biased in a direction to remove slack in the endless belt. Device.