JPH0577283U - Cross roll winding diameter detection device for loom - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a cross roll winding diameter detecting device capable of excellent winding of a woven fabric with a simple structure. [Structure] A cross guide roller 5 is pressed against the peripheral surface of a cross roll 4 wound around a roll shaft 4a. The cross guide roller 5 is rotatably supported by support levers 6 and 7, and the support levers 6 and 7 are suspended and supported by tilting shafts 8 and 9 so as to be tiltable. The tip of the detection lever 11 is in contact with one end of the cross guide roller 5. Detection lever 1
1 is supported by a support shaft 10 so as to be tiltable, and as the diameter of the cross roll 4 increases, the cross guide roller 5 tilts up about the support shafts 8 and 9, and the detection lever 11 moves around the support shaft 10. Tilt up to. The rotation amount detector 12 detects the tilt amount of the detection lever 11, that is, the winding diameter.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cross roll winding diameter detection device for a loom.

[0002]

[Prior Art]

 It is necessary to apply a constant tension to the woven fabric in order to wind it well. In the system in which the cross roll shaft is operatively connected to the loom drive source to directly drive the cross roll, it is necessary to absorb the change in cloth tension due to the increase in the winding diameter of the cross roll. It is disclosed in Japanese Patent No. 163241 or Japanese Utility Model Publication No. 56-151383.

In the conventional apparatus disclosed in Japanese Patent Laid-Open No. 163241/1985, an end face cam is fixed to a rotating shaft that supports the feeler lever, and a cam lever having a cam follower rotates the feeler lever according to a change in cross roll diameter. It is designed to rotate in conjunction with dynamic displacement. The rotating torque of the loom drive source is transmitted to the cross roll through a pair of frictional action of pressure contact, and a spring for pressure contact between both friction clutch plates is provided between the cam lever and the driven clutch plate. Intervened. As the winding diameter of the cross roll increases, the spring force increases, and the frictional force between the two clutch plates increases. Therefore, the woven fabric can be wound with a constant tension even if the diameter of the cross roll is increased.

In the conventional device of Japanese Utility Model Laid-Open No. 56-151383, the frictional force between the clutches increases as the winding diameter of the cross roll increases, and even if the diameter of the cross roll increases, the woven cloth becomes uniform. It can be wound up by tension.

[0005]

[Problems to be solved by the device]

 The feeler lever that constitutes the above-described winding device that winds the woven cloth at a constant tension is in direct contact with the cloth peripheral surface on one side of the cross roll, and the contact area of the feeler lever with respect to the cross roll is on one end side of the cross roll. Limited to a narrow range. Therefore, in the case of weaving with a short weaving width, the feeler lever cannot be brought into contact with the cloth circumferential surface of the cross roll, and weaving cannot be performed.

Japanese Utility Model Laid-Open No. Sho 63-186786 discloses a mechanism for winding a woven fabric with a constant low tension, and a press roller pressed against the peripheral surface of the cross roll to prevent wrinkles from winding. (Cross guide roller) is rotatably supported by the swing link. The press roller is supported by the woven cloth just before winding so that it can be freely moved in the falling direction by its own weight, and this low-tension winding is possible with this movable structure. However, this conventional mechanism alone cannot perform constant tension winding over the entire winding diameter, and is only an auxiliary mechanism of the winding device having a winding diameter detecting function. Moreover, when the weaving width is short, the press roller may be inclined from the parallel state with respect to the cross roll, and good winding cannot be expected.

An object of the present invention is to provide a cross roll winding diameter detecting device for a loom, which is capable of favorably performing winding diameter detection and winding with a simple configuration.

[0008]

[Means for Solving the Problems]

 Therefore, in the present invention, both ends of the cross guide roller that comes into contact with the peripheral surface of the cross roll to prevent the wrinkle are supported by tiltable support levers, and the tip end of the tiltably supported roll diameter detection lever is crossed. It was brought into contact with the end of the guide roller.

[0009]

[Action]

 The woven fabric immediately before being wound up on the cross roll goes around the cross guide roller and is wound up on the cross roll while receiving a wrinkle removing action. As the diameter of the cross roll increases, the support lever tilts and the winding diameter detection lever also tilts.

[0010]

【Example】

 An embodiment embodying the present invention will be described below with reference to FIGS. 1 and 2. Reference numeral 1 denotes a surface roller for taking up the woven cloth W, which is operatively connected to a loom drive source via a drive transmission path (not shown). 2 is an expansion bar, and 3 is a press roller. 4 is a cross roll, and its roll shaft 4a is connected to a motor other than the loom drive source.

A cross guide roller 5 is pressed against the cross roll 4 in parallel. Both ends of the cross guide roller 5 are rotatably supported by support levers 6 and 7. The support levers 6 and 7 are tiltably supported by support shafts 8 and 9, respectively. The rotation axes of the two support shafts 8 and 9 coincide with each other and are parallel to the roll shaft 4a.

A support shaft 10 is arranged in parallel near one support shaft 8, and a detection lever 11 is tiltably supported on the support shaft 10. The tip of the detection lever 11 is in contact with one end of the cross guide roller 5.

The woven cloth W goes around the cross guide roller 5 and is wound around the cross roll 4 while receiving the action of preventing the wrinkle of the cross guide roller 5. As the diameter of the cross roll 4 increases, the cross guide roller 5 tilts and rises about the support shafts 8 and 9, and accordingly, the detection lever 11 also tilts and raises about the support shaft 10. The rotation position of the support shaft 10 is detected by a rotation amount detector 12 such as a rotary encoder, a resolver or a rotary potentiometer. Based on this rotation position detection, that is, the winding diameter of the cross roll 4 is detected. The rotation control of the separate motor is performed.

A pair of support levers 6 and 7 connected to each other by the cross guide roller 5 tilt integrally around the support shafts 8 and 9, and the cross guide roller 5 is always parallel to the cross roll 4. .. Therefore, even when the cloth width is short, the cross guide roller 5 does not incline with respect to the cross roll 4, and the effect of preventing the wrinkle of the cross guide roller 5 is reliable.

The cross guide roller 5 of the present invention has been conventionally used as disclosed in Japanese Utility Model Laid-Open No. 186786/1988, and not only prevents winding wrinkles but also prevents ear height. The ears of the woven cloth are thicker than the other parts, and the diameter of the end of the cross roll tends to be larger than the other parts, that is, the height of the ears tends to be high. The cross guide roller 5 prevents this. By using such a conventionally used cross guide roller 5 as a part of the winding diameter detecting device, the number of parts is reduced and the structure is simple.

A configuration in which the cross guide roller 5 is suspended and supported by a band instead of the support levers 6 and 7 is conceivable. Since the cross guide roller 5 is inclined with respect to the cross roll, good winding cannot be expected.

As disclosed in JP-A-55-163241 and JP-A-56-151383, a winding device configured to directly drive a cross roll by obtaining driving force from a loom drive source is disclosed. Of course, the present invention can be applied.

[0018]

[Effect of the device]

 As described above in detail, in the present invention, the conventionally used cross guide roller is supported by the support lever, and the tilting of the cross guide roller due to the increase in the diameter of the cross roll is detected by the detection lever. With such a structure, it is possible to perform an excellent winding effect.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment embodying the present invention.

FIG. 2 is a rear view.

[Explanation of symbols]

4 ... Cross roll, 5 ... Cross guide roller, 6, 7 ...
Support lever 11, detection lever.

Claims (1)

[Scope of utility model registration request] 1. A cross guide roller, which is in contact with a peripheral surface of a cross roll to prevent winding wrinkles, is supported by both end portions of a tilting support lever, and a tip end of a tiltingly supported winding diameter detection lever is cross-guided. A cross roll winding diameter detection device for a loom that is brought into contact with the end of a roller.