JP2597938B2 - Web passing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a web passing apparatus configured to automatically perform a web passing operation at an introduction portion of a web processing machine.

[0002]

2. Description of the Related Art As the above-mentioned apparatus, the applicant has provided endless chains for transporting a web from an entrance to an exit of a cloth passing apparatus on both right and left sides of a running path of the web, and guiding the web from the entrance to the exit. The end of the web is attached to the holding member between the left and right endless chains, and the web attached to the holding member as the endless chain travels. Is transported from the entrance to the exit of the cloth passing device (Japanese Patent Laid-Open No. 4-552).
No. 51).

[0003]

The line speed of the web transport speed is determined by the web motor, and the chain speed of the endless chain is determined by the chain motor. The traveling distance of the web from the entrance to the exit of the cloth passing device is different from the traveling distance of the holding member, and the traveling distance of the web is short in order to smoothly transport the holding member. Therefore, if the line speed and the chain speed are the same, a web having a short running distance will be slackened. When the web is slack, it is caught in the guide roller. To solve this, if the line speed is slightly higher than the chain speed, useless tension acts on the web or the web comes off the holding member.

[0004] In view of the above problems, the present invention provides a cloth passing apparatus capable of smoothly transporting a web.

[0005]

According to a first aspect of the present invention, there is provided a web passing device disposed on an introduction side of a web processing device, wherein the web guiding device guides the web along a transport path from an inlet to an outlet of the web passing device. A guide roller group including a plurality of guide rollers, a guide chain wheel group including a plurality of guide chain wheels provided along the transport path, and a pair of guide chain wheels. A pair of endless chains respectively hung over a lulu group and a pair of return chainwheel groups, erection means for holding a web laid on the pair of endless chains, and A chain motor for driving the endless chain, a web motor for driving the guide roller, a detecting means for detecting a rotation speed of the web motor, and a torque amount setting for setting a torque amount. Means and a constant torque set by the torque amount setting means. Choi slightly faster rotational speed than the rotational speed detected by said detecting means while maintaining the click amount - Nmo -
Control means for rotating the motor.

[0006] The web passing device according to the second aspect is the first aspect.
The rotation detected by the detection unit while the control unit holds a constant amount of torque set by the torque amount setting unit in only a part of the web conveyance path from the entrance to the exit of the cloth passing device. Selection means for controlling the rotation of the chain motor at a rotation speed slightly higher than the rotation speed.

[0007]

According to a first aspect of the present invention, in the web passing device, the control means checks the rotation speed at a rotation speed slightly higher than the rotation speed detected by the detection means while maintaining the constant torque amount set by the torque amount setting means. -Rotate the motor. for that reason,
The web can be transported smoothly without the web being loosened or entangled.

In the web passing device according to the second aspect, since the torque control and the speed control can be freely selected by the selection means, the speed can be controlled as required.

[0009]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 10 shows a processing machine for processing a web A such as a cloth. This processing machine includes a cloth passing device 1, a pinning device 2, a heat treatment device 3 using a far-infrared heater, a hot air drying device 4, a cooling device 5, and a web A drawing device 6.

The present invention relates to the cloth passing device 1 among the above.

FIG. 1 is a perspective view of a cloth passing apparatus 1 according to the present invention. This cloth passing device 1 has an entrance 10 located in the front,
It is constituted by an outlet portion 12 located at the rear, and a passage 14 communicating with the inlet portion 10 and the outlet portion 12 and located below the center of the passing device 1.

The entrance 10 has a support leg 16 extending right above right and left ends in front of the cloth passing apparatus 1, and a carry-in portion extending forward from an upper end of the support leg 16 and supported by the support leg 16. 18

The passageway 14 is a hollow rectangular parallelepiped having an opening at the front and back, located below the support leg 16, and the web A conveyed from the entrance 10 passes therethrough. Will do.

The outlet 12 communicates with an opening at the rear of the passage 14, and the web A passing through the passage 14 passes through the outlet 12 through the opening at the rear.
Is taken in.

At the left and right sides of the cloth passing device 1, the outlet 1
An endless chain 22 is provided which is driven by a chain motor 20 disposed at the rear of the vehicle 2 and is guided by a guide rail in mesh with a chain wheel described later.

FIG. 2 is a vertical cross-sectional view of the cloth passing apparatus 1 and shows a guide roller and a guide chain wheel for guiding the web A.
This shows the arrangement relationship of files and the like.

Reference numeral 24 denotes a first guide roller on which the leading end of the web A is hung first.

Reference numerals 25, 26, 27, 28 and 29 denote second to sixth guide rollers, which are installed on the pair of left and right entrances 10.

Reference numerals 46, 47, 48, 49, 50, 51
Are the 7th to 1st provided on the inner surfaces on both the left and right sides of the outlet 12
Two guide rollers. And the twelfth guide roller 57
Is a driving roller, which is rotated by the web motor 302.

Reference numerals 31, 32, 33, 34, 35, 36
Is a guide chain wheel provided coaxially outside the first to sixth guide rollers 24-29.

Reference numerals 52, 53, 54, 55, 56, 57
Are guide chain wheels provided coaxially outside the seventh to twelfth guide rollers 46 to 51.

Reference numerals 59, 60 and 61 denote independent guide chains provided between the guide chains 55 and 56.
The wheel is not connected to the guide roller coaxially.

Reference numerals 62, 63, 64, 37, 38, 39
Is a return chainwheel. Further, the chain motor 20 is connected to the return chain wheel 64.

Reference numerals 40 and 41 denote guide rails for guiding the endless chain 22.
It is provided on the inner surface of the. A guide plate 42 having an arcuate cross section and a guide rail 43 are provided below the entrance 10.

Reference numeral 44 denotes a guide rail extending from the lower end of the support leg 16 to the rear of the outlet portion 12 through the passage 14.

Reference numeral 45 denotes a guide plate disposed at the rear end of the guide rail.

FIGS. 5 to 7 show a bridging member 70 and a holding cover 71 for holding the leading end of the web A. FIG.

The bridging member 70 is composed of two parallel cylindrical rods 73 integrated by a connecting plate 72 having a predetermined interval therebetween. The bridge member 70 is provided slightly longer than the interval between the left and right endless chains 22. Also,
Each cylindrical rod 73 has a cylinder 74 having a closed part on one end side,
The cylinder 74 includes a coil spring 75, a cylindrical support rod 76, and a cylindrical connecting rod 77 connecting the cylinder 74 and the support rod 76.

A pin hole is provided at the center of the closed portion of the cylinder 74. A pin 78 is fitted in the pin hole and extends outward in the axial direction of the cylinder 74. An elongated opening 79 extending in the axial direction is provided in a part of the peripheral surface of the cylinder 74.

The support bar 76 is provided at one end with a closed portion having a pin hole at the center, and a pin 78 is fitted in the pin hole and extends outward in the axial direction of the cylinder 74 as described above. On the other hand, a spring pin hole 83 is formed in the vicinity of the opening opposite to the closing portion.

One end of the connecting rod 77 can be inserted from the opening side of the cylinder 74 and the other end can be inserted from the opening side of the supporting rod 76. After the coil spring 75 is provided inside the cylinder 74, both ends of the connecting rod 77 are connected to the cylinder 74.
And the support rod 76. Insert the connecting rod 77 into the opening 7 by inserting the pin 84 through the opening 79.
9 on the edge. Further, the support rod 76 and the connecting rod 77 are fixed by inserting the pin 85 from the spring pin hole 83. The bridging member 70 thus configured can expand and contract by an axial length of the opening 79 provided in the cylinder 74 by the action of the coil spring 75 provided therein.

The holding cover 71 is made of one square metal plate. Opposite edges of the metal plate are bent in an arc shape so as to hold the erection member 70. In the center of this metal plate, a web A
Is provided with a cut-and-raised piece 80 for pressing the same.

Next, an operation state and a control method of the cloth passing apparatus 1 having the above configuration will be described.

As shown in FIG. 6, a bridge member 70 is mounted on the endless chains 22 provided on both the left and right sides of the traveling path of the web A. This attachment is performed by inserting pins 78 provided at both left and right ends of the erection member 70 in an extended state by a repulsive force of the coil spring 75 into a pin hole 81 provided in a link of the endless chain 22. This attachment is performed at substantially the center of the guide rail 40 provided at the front of the support leg 16, in other words, at a location where an adult can easily reach by reaching.

The leading end of the web A is wound around the erection member 70 erected on the left and right endless chains 22 in this manner, and the holding cover 71 is covered from above, as shown in FIG.
As a result, the leading end of the web A is held between the erection member 70 and the holding cover 71. In this state, when the chain motor 20 is driven to move the endless chain 22, the leading end of the web A runs along with the running of the erection member 70, and the web A is subsequently conveyed. .

The line speed (transport speed) of the web A is determined by the web motor 302, and the speed of the endless chain 22 (hereinafter referred to as the chain speed) is determined by the chain motor 20. . In addition, since each guide roller and each chain wheel are coaxial but can be driven independently, the chain speed and the line speed can be controlled independently. As is clear from FIG. 2, the traveling distance of the web A from the entrance to the exit of the cloth passing device 1 (the distance shown by a solid line in FIG. 2) and the traveling distance of the erection member 70 (shown by a dashed line in FIG. 2). Distance)
(In particular, the distance at the exit 12 is different), and the traveling distance of the web A is shorter. Therefore, if the line speed and the chain speed are the same, the web A having a short running distance will be slackened. When the web A is loosened, the web A gets caught in the guide roller. In order to solve this, the line speed may be set higher than the chain speed. In this case, unnecessary tension acts on the web A or the web A comes off the erection member 70.

Therefore, the cloth passing apparatus 1 performs a line speed following torque control on the line speed and the chain speed. The control will be described below with reference to FIGS.

Reference numeral 304 denotes a pulse oscillator for detecting the rotation speed of the web motor 302, and outputs the signal to a pulse train converter 306.

Reference numeral 308 is a torque amount setting device. The torque amount set by the torque amount setting device 308 is determined by the type of the web A to be conveyed.

Reference numeral 310 denotes a driver circuit for the chain motor 20, which receives a speed signal and a torque signal from the pulse train converter 306 and the torque amount setting device 308, respectively. Then, the chain motor 20 is controlled by both the torque and the rotation speed. In addition.

Next, a control method will be described.

In a state where the web A is held by the erection member 70, as shown in FIG.
The torque amount of 0 is always controlled to a constant torque amount T1 by a torque signal from the torque amount setting device 310. The rotation speed (chain speed) of the chain motor 20 is controlled to be slightly higher than the line speed by the speed signals from the pulse oscillator 304 and the pulse train converter 306. The slightly faster speed is calculated based on the difference between the travel distance of the web A and the travel distance of the erection member 70, and is calculated based on the line speed and the chain speed.
Speed is proportional to speed. This can be expressed as follows. α is the additional speed calculated based on the difference in traveling distance.

Chain speed Vt = Line speed Vr + α In a state where the web A is detached from the erection member 70, if the amount of torque is constant, the chain motor 20 rotates at a high speed. Speed), a threshold speed (hereinafter, referred to as a maximum chain speed) is provided, and the rotation speed is controlled so as not to exceed a certain value. However, in the case of this embodiment, the maximum chain speed is the line speed Vr + α.

That is, when the chain speed Vt is within the line speed Vr + α, the line speed Vr + α is controlled to a constant torque amount T1 while maintaining the line speed Vr + α.
At a speed exceeding r + α, the rotation speed is controlled at the line speed Vr + α regardless of the torque amount. When the line speed Vr changes, the chain speed Vt is accordingly changed.
Also changes proportionally, but the constant torque amount T1 does not change (see FIG. 4).

After the web A is removed, the line speed and the chain speed need not be made to follow each other, so they may be controlled independently.

By this torque control, the tension of the web A between the guide rollers is always constant even if the line speed changes, and the web A becomes slack, unnecessary tension acts on the web A, or the web A Does not come off the erection member 70. When the line speed changes, the chain speed also changes accordingly, and the web A is conveyed smoothly. Furthermore, after the web A is removed, the erection member 70 moves at the maximum chain speed, and does not reach a higher speed, which is safe.

As shown in FIG. 9, the holding cover 71 is removed from the mounting member 70 transported to the cloth passing end position P as the endless chain 22 travels, and the web wound around the mounting member 70 is removed. Unwind the tip of A from the erection member 70. Thereafter, the erection member 70 is removed from the endless chain 22. This removal can be easily performed by shortening the bridging member 70 by the action of the coil spring 75.

Thereafter, the leading end of the web A is guided to the pinning device 2 which is the next step.

Although the endless chain 22 is used as the transport device for the web A, the present invention is not limited to this, and a rubber belt may be used.

[0051]

According to a first aspect of the present invention, in the web passing device, the control means maintains the constant torque amount set by the torque amount setting means while maintaining the constant torque amount at a rotation speed slightly higher than the rotation speed detected by the detection means. Rotate the chain motor. Therefore, the web does not slack or get caught,
In the web passing device according to the second aspect, which can smoothly transport the web, the torque control and the speed control can be freely selected by the selection means, so that the speed can be controlled as necessary.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view thereof.

FIG. 3 is a block diagram thereof.

FIG. 4 is a graph showing torque control.

FIG. 5 is a plan view of an installation member.

FIG. 6 is a perspective view showing a state in which an erecting member is attached to an endless chain.

FIG. 7 is a perspective view of a holding cover.

FIG. 8 is a side view showing a state where the web is sandwiched by the erection members.

FIG. 9 is a side view showing a state in which a holding cover is removed.

FIG. 10 is a side view of the processing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Clothing apparatus A ... Web 10 ... Inlet part 12 ... Outlet part 22 ... Endless chain 24 ... 1st guide 1 roller 70 ... Construction member

Claims (2)

(57) [Claims] 1. A cloth passing device disposed on the introduction side of a web processing device, comprising: a plurality of guide rollers for guiding a web along a transport path from an entrance to an exit of the cloth passing device. -A group of rollers and a plurality of pairs of guide chains provided along the transport path.
Guide wheel group consisting of a pair of guide wheels, a pair of guide chain wheels and a pair of return chains
A pair of endless chains respectively hung over a wheel group, a bridging means for holding a web laid on the pair of endless chains, and a chain for driving the pair of endless chains. A motor, a web motor for driving the guide roller, a detecting unit for detecting a rotation speed of the web motor, a torque amount setting unit for setting a torque amount, and a torque amount setting unit. And a control means for rotating the chain motor at a rotation speed slightly higher than the rotation speed detected by the detection means while maintaining the constant torque amount. 2. The method according to claim 1, wherein the detection means detects the torque while maintaining a constant amount of torque set by the torque amount setting means in only a part of the web transport path from the entrance to the exit of the cloth passing apparatus. 2. The web passing device according to claim 1, further comprising selection means for controlling the chain motor to rotate at a rotation speed slightly higher than the rotation speed.