JP2599672B2 - Web drawer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for extracting a web such as a cloth or a sheet.

[0002]

2. Description of the Related Art The present applicant has previously provided a drawer for automatically storing a web removed from a pin tenter in a state of being shaken down and piled up on a bucket (Japanese Patent Laid-Open No. Hei 4-23756).

In this drawer, endless chains for transporting the web from the inlet to the outlet of the drawer are provided on both the left and right sides of the running path of the web, and a plurality of guide rollers for guiding the web from the inlet to the outlet are provided. And
A holding member to which the tip of the web is attached is provided between the left and right endless chains. Thereby, the web attached to the holding member is transported from the entrance to the exit of the drawer as the endless chain travels.

In this drawer, a holding member holding the end of the web travels along with endless chains arranged on both sides of the web traveling path, and passes through a guide roller which has been troublesome up to now. Perform the cloth automatically.

[0005]

The web transport speed is determined by the web transport motor, and the line speed of the endless chain is determined by the chain motor. The travel distance of the web from the cloth removal position of the drawer to the swing-down position is different from the travel distance of the holding member, and the travel 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.

In view of the above problems, the present invention provides a drawer capable of smoothly transporting a web.

[0007]

According to a first aspect of the present invention, there is provided a web withdrawing device disposed on a carry-out side of a web processing device, wherein the web withdrawing device is capable of swinging at an upper portion thereof. A web swinging means, a guide roller group including a plurality of guide rollers for guiding the web to the swing down means, and a pair of guide chain wheels provided at both ends of the plurality of guide rollers. A guide chain wheel group and a pair of return chain wheel groups; an endless chain including a pair of belts or chains respectively laid over the pair of guide chain wheel groups and the pair of return chain wheel groups; Holding means for holding a web provided between the endless chains, a chain motor for driving the pair of endless chains, and a guide row. And a detecting means for detecting the rotation speed of the web motor, and a rotation speed slightly higher than the rotation speed detected by the detection means while maintaining a constant amount of torque set by the torque amount setting device. It comprises control means for rotating the chain motor.

According to a second aspect of the present invention, there is provided the web withdrawing device according to the first aspect, wherein the control means applies the constant torque set by the torque setting device to only a part of the transport path to the swing-off means. There is provided selection means for controlling the chain motor to rotate at a rotation speed slightly higher than the rotation speed detected by the detection means while holding the chain motor.

[0009]

When the running distance of the endless chain is different from that of the web, the control means detects the constant amount of torque set by the torque amount setting device while detecting the same by the detecting means. The chain motor is rotated at a rotation speed slightly higher than the rotation speed of the web motor.
Therefore, the web and the endless chain are conveyed at the same speed, and even if the web is slackened due to a difference in travel distance between the guide rollers, the chain motor rotates with a constant amount of torque so that it does not slack. .

According to a second aspect of the present invention, in the web withdrawing device, the control means holds the constant torque amount set by the torque amount setting device in only a part of the conveyance path to the swing-off means, and the detecting means detects There is a selection means for controlling the chain motor to rotate at a rotation speed slightly higher than the detected rotation speed, and the torque control can be performed only on the necessary transport path by this selection means.

[0011]

【Example】

[Table of Contents] (1) Pin tenter (2) Pull-out device (3) Carrier member (4) Connection box (5) Structure in which the chuck separates the cloth with the shake-off device (6) Air piping for operating the chuck and rotary actuator (7) Control system of pin tenter and drawer (8) Operation of chuck removing cloth from pin (9) Structure for moving chuck in left and right direction (10) Control of line speed (11) Operation state of drawer An embodiment will be described with reference to FIGS.

As shown in FIG. 20, the cloth W folded and stored in the bucket 1 is taken out by the take-out device 2, the cloth W is attached to the pin tenter 4 by the pinning device 3, and the cloth W is conveyed in the spread state. In a system in which the heat treatment is performed by the heat treatment machine 5 and the cloth W is removed from the pin tenter 4 by the drawer 6 and then stored again in the bucket 7 in a folded state, the present embodiment includes the pin tenter 4, the drawer 6 and It relates to a carrier member 54 that moves inside the drawer 6. Hereinafter, the structure will be described in order.

(1) Pin Tenter Hereinafter, the pin tenter 4 will be described.

The pin tenter 4 is provided with a pair of left and right tenter rails 10. An endless chain (not shown) runs on the tenter rail 10, and the endless chain is provided with a plurality of pin support portions 12. A plurality of pins 14 are implanted in the pin support 12. By attaching both ears of the cloth W to the pins 14 and driving the endless chain, the cloth W is caused to travel along the tenter rail 10 in the spread state. Note that the tenter rail 10 is movable in the left-right direction, and the size between the tenter rails 10 can be changed according to the width of the cloth W. The endless chains of the tenter rails 10 are driven by a tenter motor 16.

(2) Drawing Device Hereinafter, the drawing device 6 will be described.

The drawer 6 includes a pair of frames 20 and 2.
There are provided four guide rollers 22 to 28 for transporting the cloth W during zero. The first guide roller 22 is provided near the entrance of the pull-out device 6, that is, near the transfer end position of the pin tenter 4, and the fourth guide roller 28 is provided at the upper end of the pull-out device 6, that is, at the swing-down position. And
By driving the first guide roller 22 by the cloth conveying motor 302, the conveying speed of the cloth W (hereinafter, referred to as line speed).
Transport by. In addition, since the line speeds of the cloth transport motor 302 and the tenter motors 16 of the tenter rails 10 and 10 need to be matched, they are connected by a gear box or a pulse transmitter.

Reference numeral 29 denotes a pair of 0-th chain wheels provided at the position where the pin tenter 4 is conveyed.

Reference numeral 30 denotes a first chain wheel provided at both ends of the first guide roller 22. Although the roller and the chain wheel are provided coaxially, they are independently driven.

Reference numeral 32 denotes a second chain wheel provided at both ends of the second guide roller 24. Although the roller and the chain wheel are provided coaxially, they are independently driven.

Reference numeral 34 denotes a third chain wheel provided at an intermediate position between the second guide roller 24 and the third guide roller 26.

Reference numeral 36 denotes a fourth chain wheel provided at both ends of the third guide roller 26. Although the roller and the chain wheel are provided coaxially, they are independently driven.

Reference numeral 38 denotes a fifth chain wheel provided at both ends of the fourth guide roller 28. The fifth chain wheel 38 is provided with two chain wheels 38a and 38b coaxially. . Although the roller and the chain wheel are provided coaxially, they are independently driven.

Reference numerals 40 and 42 denote a sixth chain wheel and a seventh chain wheel, respectively, which are installed on a pair of hanging frames 8a and 8b of the swing-off device 8, and are provided at the lower end of the swing-off device 8. ing.

Reference numeral 44 denotes an eighth chain wheel provided at the center of the frame 20. The eighth chain wheel 44 is movable by an air cylinder 44a, thereby adjusting the length of an endless chain described later.

Reference numeral 46 denotes a ninth chain wheel provided above the eighth chain wheel 44.

Reference numeral 48 denotes a tenth chain wheel provided near the entrance of the drawer 6.

Reference numeral 50 denotes a swing roller provided in the vicinity of the transfer end position of the pin tenter 4. The swing roller 50 is lifted by the air cylinder 50a when removing the cloth W from the pin 14, and descends and presses the cloth W during normal operation.

Reference numeral 52 denotes a pair of endless chains.
The endless chain 52 includes the 0th chain wheel 29, the 1st
Chain wheel 30, second chain wheel 32, third chain wheel 34, fourth chain wheel 36,
Inner chain wheel 38 of fifth chain wheel 38
a, the sixth chain wheel 40, the seventh chain wheel 42, the outer chain wheel 38b of the fifth chain wheel 38, the eighth chain wheel 44, the ninth chain wheel 46, and the tenth chain wheel 48. The endless chain 52 is not limited to a chain (chain) but may be a belt. Therefore, the endless chain referred to in the claims means a broad concept including an endless chain (chain) and an endless belt.

Reference numeral 54 denotes a pair of endless chains 52,5.
2 is a carrier member installed between the two. The carrier member 54 automatically grasps the leading end of the cloth W, and
Is automatically transported from the entrance to the exit.

(3) Carrier Member The carrier member 54 will be described below.

Reference numeral 56 denotes a plate-like frame that forms the main body of the carrier member 56. Connection members 58, 58 for connecting to the pair of endless chains 52, 52 are provided on the upper surfaces of both ends of the frame 56. Thereby, when the endless chain 52 moves, the carrier member 54 also moves.

Reference numerals 60 and 62 denote a pair of linear rails provided on the rear surface of the frame 56.

Reference numerals 66 and 68 represent linear rails 60 and 6 respectively.
2 are screw rods respectively provided at the rear of the two. The left screw rod 66 is a left screw, and the right screw rod 68 is a right screw. And the screw rods 66 and 68 are
It is connected via a gear box 64 composed of a bevel gear, and when the screw rod 66 rotates, the screw rod 68 also rotates at the same speed.

Reference numerals 70 and 72 denote linear rails 60 and 6 respectively.
2 are moving members provided on the screw rod 6 respectively.
By rotating 6, 68, linear rails 60, 62
Move symmetrically along.

Reference numeral 76 denotes a connection box provided at the right end of the screw rod 68. A brake release rod 80 projects from the right end of the connection box 76. The detailed structure of the connection box 76 will be described later.

Reference numeral 78 denotes a claw-type crank rod provided at the left end of the screw rod 66.

Reference numerals 82 and 84 denote rotary actuators provided in front of the moving members 70 and 72, ie, on the front surface of the frame 56.

Reference numerals 86 and 88 are chucks provided on the rotating shafts of the rotary actuators 82 and 84. The chucks 86 and 88 include an air cylinder 86a and a grip portion 86b that grips the tip of the cloth W. Air cylinder 86a
One of the gripping portions 86b is provided on the main body, and the other of the gripping portions 86b is provided on the cylinder. By driving the cylinder,
The other of the gripping portions 86b contacts the one and performs an operation of gripping the cloth W.

Reference numerals 90 and 92 denote air tanks provided on the front surfaces of both ends of the frame 56, respectively.

Reference numerals 94 and 96 are solenoid valves for opening and closing the chucks 86 and 88, respectively.

Reference numerals 98 and 100 denote the chuck 8 similarly.
These mechanical valves open and close 6, 88 respectively.

Reference numerals 102 and 104 denote solenoid valves for driving the rotary actuators 82 and 84, respectively.

Reference numerals 106 and 108 are docking members fixed to both ends of the frame 56. The left docking member 106 is provided with two connection recesses 110 and 112, and has an air supply connection port 116 for supplying air to the air tank 90 and a solenoid valve 9.
4, 102 are provided with connection terminals 114 for supplying electricity. Further, the crank rod 78 protrudes. The connection recess 118,
120, an air supply connection port 122 and a connection terminal 124 are provided, and a brake release rod 80 protrudes.

Reference numerals 126 and 128 are couplers provided on the upper surface of the pin tenter 4. These couplers 126 and 12
8 is movable in the left-right direction by rails 130 and 132, and is moved by air cylinders 134 and 136. On the distal end surface of the left coupler 126, connection protrusions 138 and 140 are provided to connect to the connection recesses 110 and 112 of the left docking member 106. Further, an air supply connection port 142 connected to the air supply connection port 114 and a connection terminal 144 connected to the connection terminal 116 are provided. Further, a claw-type crank bar 146 connected to the claw-type crank bar 78 is provided. Air supply connection port 142
Is connected to an air supply device (not shown),
Is connected to a control unit and a power supply device described later.
The crank rod 146 is connected to a width adjusting motor 150 via a rotary encoder 148.

Similarly, the right coupler 128 has an air supply connection port, a connection terminal, and a brake releasing air cylinder 156.

When the carrier member 54 stops at a predetermined position, the air cylinders 134 and 136 are operated to connect the couplers 126 and 128 to the docking members 106 and 106.
108, the connection recesses 110 and 112 and the connection protrusion 1
38 and 140 are docked. Thereby, air is supplied from the air supply connection port, and electricity is supplied via the connection terminal.

Reference numerals 160 and 162 denote cloth receiving plates disposed inside the pair of left and right tenter rails 10 and move with the left and right movement of the tenter rail 10. Also,
The air cylinders 164 and 166 are vertically movable. The shape of the left cloth receiving plate 160 is such that the front portion has the inclined surface 16.
0a, a horizontal plane 160 from the upper end of the inclined surface 160a.
b is extended. An opening 160c into which the chuck 86 can enter is opened at the center of the horizontal surface 160b. Similarly, the cloth receiving plate 162 on the right side has an inclined surface 162a, a horizontal surface 162b, and an opening 162c.

(4) Connection Box Hereinafter, the connection box 76 will be described (see FIGS. 10 and 11).

Reference numeral 168 denotes a pressing member provided at an inner end of the brake release rod 80 protruding from the docking member 108. The depression 17 is located at the center of the pressing member 168.
0 is provided.

Reference numeral 172 denotes a support for rotatably supporting the other end of the screw rod 68 via a bearing. The support portion 172 is fixed to the rear surface of the frame 56.

Reference numeral 174 denotes a connecting member provided at the end of the screw rod 68. At the center of the connecting member 174 is a nut 176 for fixing the screw rod 68. This nut 1
76 is smaller than the recess 170, and the nut 176 is rotatable in the recess 170 when the brake is released. Further, a flange portion 178 is provided on an outer peripheral portion of the connection member 174.

Reference numeral 180 denotes a brake section movably provided on the support section 172. This brake section 180
Is mounted via a coil spring 182 and is constantly urged outward.

The pressing portion 18 is provided on the outer surface of the brake portion 180.
4, which constantly presses the flange portion 178 by the urging force of the coil spring 182.

The role of the connection box 76 will be described.

State in which brake release rod 80 and brake release air cylinder 156 are not connected (see FIG. 10).
In, the pressing portion 184 of the brake portion 178 always presses the flange portion 178 outward by the urging force of the coil spring 182, so that the screw rod 68 is prevented from rotating.

When the brake release rod 80 and the brake release air cylinder 156 are docked and the brake release air cylinder 156 presses the brake release rod 80 inward, the pressing member 168 is braked. The part 180 to the coil spring 1
Press inward against the urging force of 82. Then, since the pressing force from the pressing portion 184 disappears, the flange portion 178
Are rotatable, and the screw rod 68 is also rotatable. Note that the pressing member 168 does not rotate.

Thus, when the coupler 128 is docked, the screw rod 68 becomes rotatable and the coupler 1
When 28 is away, screw rod 68 cannot rotate.

Since the left screw rod 66 is connected to the screw rod 68 via the gear box 64, the left screw rod 66 performs the same movement as the screw rod 68.

As described above, the screw rods 66 and 68 are rotatable when the coupler 128 is docked.
6, 88 is moved in the left-right direction. When the coupler 128 is separated, the screw rod 68 cannot be rotated because the cloth W is not moved when the carrier member 54 is moved.
In order to prevent the chucks 86 and 88 holding the gripper from moving in the left and right directions, and when the coupler 128 is docked,
This is because when the claw types of the and the crank bar 146 do not mesh with each other, the crank bar 78 is fixed so that the claw shapes mesh with each other by rotating the crank bar 146 with the motor 150.

(5) The structure in which the chuck releases the cloth with the shake-down device
Hereinafter, a structure in which the chucks 86 and 88 separate the cloth W at the lower end of the swing-down device 8 will be described (see FIGS. 4 and 12).

Reference numeral 186 denotes the seventh chain wheel 4
A pair of left and right discs are provided inside the insides 2 and 42, respectively. A semicircular convex ridge 1 is provided on the outer peripheral portion of the inner surface of the disk 186.
88 are provided. The position where the ridge 188 is provided corresponds to the position where the endless chain 52 is stretched. In addition, inclined surfaces 190 are provided at both ends of the ridge 188.

The endless chain 52 allows the carrier member 5
When 4 is conveyed to the position of the seventh chain wheel 42, the mechanical valve 98 provided on the upper surface of the frame 56 also reaches this position. Mechanical valve 98
Switch 98a hits the inclined surface 190 to be turned on, and moves on the inner peripheral surface of the ridge 188. As a result, the mechanical valve 98 is operated, and the chuck 86 is opened. When the chuck 86 is opened, the cloth W comes off and falls on the bucket 7. When the mechanical valve 98 passes the position of the ridge 188, the switch 98a is turned off and the chuck 86 returns to the closed state.

(6) Chuck and Rotary Actuator
The following air pipe to operate the left chuck 86 and the rotary actuator 8
2 will be described (see FIG. 13).

The air supplied from the air supply connection port 114 reaches the air tank 90. A mechanical valve 98 is connected to the air tank 90, and a solenoid valve 94 is connected to the mechanical valve 98. An air cylinder 86 a of the chuck 86 is connected to the solenoid valve 94. Further, a silencer 201 is connected to the solenoid valve 94, and a silencer 200 is connected to the mechanical valve 98.

Thus, when air is supplied from the air supply connection port 114 and electricity is supplied from the connection terminal 116, the chuck 86 is opened and closed by operating the solenoid valve 94 by an electric signal. In a state where air and electricity are not supplied, the mechanical valve 98 is used by utilizing the air in the air tank 90.
Operates to open and close the chuck 86. That is, since the coupler 126 is connected when the chuck 86 grasps the cloth W, the chuck 126 is closed by the solenoid valve 94 to grasp the cloth W, and when the chuck 86 releases the cloth W, the coupler 126 is disconnected. Since it is not connected, the chuck is opened by the operation of the mechanical valve 98.

A solenoid valve 102 is connected to the air tank 90, and the solenoid valve 102
The rotary actuator 82 is connected via the speed controller 192. A silencer 202 is connected to the solenoid valve 102. That is, when the chuck 86 grasps the cloth W and peels the cloth W from the pin 14, the reverse is performed by operating the solenoid valve 102 and rotating the rotary actuator 82. The speed at which the chuck 86 is inverted is controlled by the speed controller 192. This inversion operation is performed in a state where the coupler 126 is connected.

The same applies to the air piping for operating the right chuck 88 and the rotary actuator 84.

(7) Control System of Pin Tenter and Pull Out Device Hereinafter, a control system of the pin tenter 4 and the pull out device 6 will be described (see FIG. 14).

Reference numeral 194 denotes a control unit of the drawer 6. The control unit 194 is composed of a sequencer or a microcomputer.

The control section 194 includes cloth receiving plates 160 and 16
2 air cylinders 164, 166, couplers 126, 12
8 air cylinders 134, 136, chucks 86, 88
Air cylinder and rotary actuator 82,
84 are respectively connected via solenoid valves.

The controller 194 includes a cloth transport motor 3
02, tenter motor 18, second chain wheel 32
Motor 220 for driving the motor, width adjustment motor 1
50 and the encoder 148 are connected.

Further, the following sensors are connected to the control unit 194. This sensor is a limit switch, a photo switch, or the like.

Reference numerals 196 and 168 denote cloth receiving plates 160 and
162 are cloth detection sensors respectively provided.

Reference numerals 200 and 202 denote chucks 86 and 8.
2 is a chuck opening / closing sensor provided in FIG.

Reference numerals 104 and 106 denote chuck rotation sensors provided on the rotary actuators 82 and 84, respectively.

Reference numerals 208 and 210 denote couplers 126 and 1.
28 is a coupler attachment / detachment sensor that detects the attachment / detachment state of the coupler.

Reference numeral 212 denotes a carrier member 54 provided between the first chain wheel and the second chain wheel.
Is a point A detection sensor for detecting whether or not the vehicle has passed.

Reference numeral 214 denotes a ninth chain wheel 46.
And a tenth chain wheel 48, which is a point B detection sensor that detects whether the carrier member 54 has passed.

Reference numeral 216 indicates that the carrier member 54 is
Whether or not it has come to a position where
Reference numerals 6 and 128 denote point C detection sensors for detecting whether or not they have reached positions (hereinafter referred to as point C) that can be connected to the docking members 106 and 108, respectively. The C point detection sensor 216 is provided in a pair on the left and right sides of the couplers 126 and 128, respectively, and outputs a signal when the docking members 106 and 108 respond thereto. C point detection sensor 216
However, unlike other sensors, a pair of left and right is provided,
If the positions of the docking members 106 and 108 are not confirmed on the left and right, respectively, the movements of the couplers 126 and 128 are independent, and the docking between the connection recess and the connection protrusion may shift.

Reference numeral 218 denotes a cloth removal sensor provided near the point A detection sensor 212, which detects whether the cloth W has been removed and moved with the carrier member 54.

Reference numeral 222 denotes an operation unit of the control unit 194. The operation unit 222 operates an operation command of the apparatus and the rotation speed of the tenter motor 16 of the pin tenter 4.

(8) Operation of Chuck Removing Cloth from Pin Hereinafter, an operation of the chuck 86 removing the cloth W from the pin 14 will be described (see FIGS. 5 to 7).

The cloth W conveyed in the spread state to the tenter rail 10 rises upward along the inclined surface 160a of the cloth receiving plate 160 and reaches the position of the horizontal plane 160b. Then, it reaches the position of the chuck 86 in the opened state (see FIG. 5).

The cloth detecting sensor 196 detects that the cloth W has come to the position of the chuck 86, closes the grip 86 b of the chuck 86 by the rotary actuator 82, and moves the tip of the cloth W to the cloth detecting sensor. 196 detects that the cloth W has come to the position of the chuck 86, and the rotary actuator 82
With the b closed, the tip of the cloth W is grasped (see FIG. 6).

When the chuck 86 grips the cloth W, the rotary actuator 82 rotates the chuck 86 upward.
In the state where the cloth W is rotated upward, the cloth W is pulled upward, and the cloth W is removed from the pin 14 (see FIG. 7).

Note that, instead of the rotary actuator 82, a motor may be used.

(9) A structure for moving the chuck in the left-right direction
Concrete following describes the structure for moving the chuck 86, 88 in the lateral direction.

When transporting the cloth W, the width of the pair of tenter rails is changed in accordance with the width of the cloth W. Therefore, it is necessary to move the positions of the chucks 86 and 88 for removing the cloth W accordingly. Especially chuck 8
Since the positions 6, 88 need to be provided in the vicinity of the pin 14, the adjustment is delicate. The screw rods 66, 68 are rotated by the width adjusting motor 150 via the crank rods 78, 146. When the screw rods 66, 68 rotate, the moving members 70, 72 move symmetrically along the linear rails 60, 62. As a result, the chucks 86 and 88 move. In this case, the moving distance is detected by a rotary encoder 148 connected to the width adjusting motor 150. The signal output from the encoder 148 is
Then, the moving distance is determined.

(10) Line Speed Control The line speed control will be described below separately.

The normal line speed for performing the heat treatment in the heat treatment machine 5 (hereinafter, referred to as a normal speed) is 10 m /
Most are more than a minute. However, when the drawer 6 removes the cloth W and guides the cloth W to the swing-down apparatus 8, the cloth W may not be removed properly because the normal speed is too fast.
Therefore, the control unit 194 controls the transfer motor 3 to reduce the line speed from the normal speed to a line speed of 10 m / min or less (hereinafter, referred to as a cloth removing speed) when performing the cloth removing operation.
Go to 02. If the normal speed is 10 m / min or less, the line speed is maintained.

Incidentally, the line speed is the transport speed of the cloth W as defined above, and
The speed of the endless chain 52 (hereinafter referred to as the chain speed) is determined by the chain motor 220. In addition, each guide roller 22, 24, 26, 28 and each chain wheel 30, 3
Chain speeds and line speeds can be controlled independently since 2, 36, 38 are coaxial but can be driven independently. Then, as is clear from FIG.
The travel distance of the cloth W (the distance shown by the solid line in FIG. 2) and the travel distance of the carrier member 54 (the distance shown by the one-dot chain line in FIG. 2) differ from the cloth removal position to the swing-down position. The distance is shorter. Therefore, if the line speed and the chain speed are the same, the cloth W having a short running distance is slackened. When the cloth W is loosened, the guide rollers 22, 24 ...
Or get caught in. To solve this, the line speed may be set higher than the chain speed. In this case, unnecessary tension acts on the cloth W or the cloth W comes off the carrier member 54.

Therefore, the drawing device 6 performs a line speed following torque control with respect to the line speed and the chain speed. The control will be described with reference to FIGS.

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

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

Reference numeral 310 denotes a driver circuit of the chain motor 220, 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 220 is controlled by both the torque and the rotation speed. In addition. The controller 196 is also connected to the driver circuit 310.

Next, a control method will be described.

When the cloth W is being gripped by the carrier member 54, as shown in FIG.
The torque amount 20 is always controlled to a constant torque amount T1 by a torque signal from the torque amount setting device 310. Further, the rotation speed (chain speed) of the chain motor 220 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. This slightly faster speed
It is calculated based on the difference between the traveling distance of the cloth W and the traveling distance of the carrier member 54, and the line speed and the chain speed are proportional. 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 cloth W is detached from the carrier member 54, if the amount of torque is constant, the chain motor 220 rotates at a high speed. Speed) with a threshold speed (hereinafter referred to as the maximum chain speed).
The rotation speed is controlled so as not to increase more than 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 in proportion, but the constant torque amount T1 does not change (see FIG. 16).

After the cloth W is removed, the line speed and the chain speed do not need to follow each other, so they may be controlled independently.

By this torque control, the tension of the cloth W between the guide rollers is always constant even if the line speed changes, and the cloth W is loosened, unnecessary tension acts on the cloth W, or the cloth W Does not come off the carrier member 54. When the line speed changes, the chain speed also changes accordingly, and the cloth W is smoothly conveyed. Further, after the cloth W is removed, the carrier member 54 moves at the maximum chain speed, and does not reach a higher speed, and is safe.

If the carrier member 54 does not stop at the position C where the cloth W can be gripped, the coupler 12
6 and 128 cannot be connected to the docking members 106 and 108, respectively. Therefore, when approaching the point C, the control unit 194 controls the chain motor 220 to reduce the maximum chain speed to a chain speed of about 2 to 3 m / min (hereinafter referred to as a docking chain speed). This ensures that the carrier member 54 stops at the point C.

(11) Operation state of drawer device Hereinafter, the operation state of the drawer device 6 will be described based on the control unit 194 (see FIGS. 17 to 19).

In step 1, the operation of the operation section 222 starts the cloth removing operation at the cloth removing speed (the chain speed is also the same as the cloth removing speed). Then, pin tenter 4
Then, the cloth W is conveyed, and the process proceeds to step 2. The chain speed Vt is controlled to the line speed Vr + α.

In step 2, it is detected whether or not the cloth W has been detected based on the signal from the cloth detection sensor 196 on the left side. If the cloth W has been detected, the process proceeds to step 3, otherwise, the state of step 2 is detected. Continue.

In step 3, the left chuck 86
And proceed to step 4.

In step 4, it is determined whether or not the cloth W is grasped. If the cloth W is grasped, the flow proceeds to step 5, and if not, the flow returns to step 3.

In step 5, the chuck 86 is rotated upward by the rotary actuator 82, and the flow advances to step 6.

In step 6, whether or not the chuck 86 has been rotated is detected based on a signal from the chuck rotation sensor 204. If the chuck 86 has been rotated, the process proceeds to step 7, otherwise returns to step 5.

In step 7, the coupler 126 is removed, and the rail width change command and the encoder input are invalidated. Then, the process proceeds to Step 8.

In the right chuck 88, the same determination as in step 2 to step 7 is made, and the process proceeds to step 8. Note that the left and right controls are performed independently because it is assumed that the web W is not symmetrically stretched on the pin tener 4.

At step 8, the couplers 126, 12
8 and if these are removed, go to step 9
Otherwise, return to step 7.

In step 9, the chain motor 22
0 is driven. Then, the process proceeds to step 10.

In step 10, the carrier member 56
Starts moving. Then, the process proceeds to step 11.

In step 11, the point A detection sensor 212 detects whether or not the carrier member 56 has passed point A, and if so, the process proceeds to step 12, otherwise returns to step 11.

In step 12, the cloth removal sensor 21
8, the cloth W is detached from the pins 14 and the carrier member 5
It is detected whether or not the sheet has been conveyed together with step S4. If the sheet has been removed, the process proceeds to step S13. Otherwise, the operation of step S12 is continued.

In step 13, the cloth receiving plate 160,
162 and the swing roll 50 are lowered, and the process proceeds to step 14.

In step 14, the carrier member 56
Moves to the position of the swing-down device 8, that is, the position of the shake-down bucket 7. Then, the process proceeds to step 15.

In step 15, the chucks 86, 8
8 is opened, and the holding of the cloth W is released in step 16. Then, the process proceeds to step S17. Up to this step, the chain motor 220 is torque-controlled by the constant torque amount T1, but in the subsequent steps, the chain speed is set to the maximum chain speed (line speed Vr + α) as described above. The rotation speed is controlled.

In step 17, when the mechanical valves 98, 104 have passed the position of the ridge 188, the chucks 86, 88 are in the closed state, and the process proceeds to step 18.

In step 18, the carrier member 56
Is detected by the point B detection sensor 214, and if so, the process proceeds to step 19; otherwise, step 18 is continued.

In step 19, the restriction on the line speed which is the cloth removal speed is released, and the normal speed is set by the operation unit 222. This setting may be manual or automatic. Then, the process proceeds to step 20.

In step 20, the carrier member 5
6 approaches the point C, the maximum chain speed of the carrier member 56 is reduced to the docking chain speed. Then, the process proceeds to step 22. Note that the line speed is a normal speed.

In step 22, the carrier member 56
Is detected by the point C detection sensor, and if it has passed, the process proceeds to step 23; otherwise, the state of step 22 is continued.

In step 23, the coupler 126 is docked, and the flow advances to step 24. The coupler 12
8 is also the same.

In step 24, the encoder input and the rail width change command are made valid. Then, the process ends.

As described above, the cloth W conveyed by the pin tenter 4 can be automatically removed from the pins 14 and conveyed to the shake-off device 8, so that work efficiency can be improved.

In the torque control, only a part of the transport path may be used, and the other parts may be speed-controlled.

[0129]

According to the web drawing device of the present invention, the web and the endless chain are conveyed at the same speed, and the web is slack due to the difference in travel distance between the guide rollers. In any case, since the chain motor is rotated with a constant amount of torque, there is no slack. Further, unnecessary tension is not applied to the web.

According to a second aspect of the present invention, there is provided the web withdrawing device according to the first aspect, wherein the control means controls the fixed amount of torque set by the torque amount setting device only in a part of the transport path to the swing-down means. There is provided selection means for controlling the chain motor to rotate at a rotation speed slightly higher than the rotation speed detected by the detection means while holding the chain motor. As a result, torque control can be applied to only a part of the transport path, and the other parts can be speed controlled.

[Brief description of the drawings]

FIG. 1 is a perspective view of a drawer according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the drawer.

FIG. 3 is a front view of a carrier member.

FIG. 4 is a rear view of the carrier member.

FIG. 5 is an enlarged longitudinal sectional view of a main part showing a state in which a cloth is transported to a position of a chuck.

FIG. 6 is an enlarged vertical cross-sectional view of a main part in a state where the chuck grips the cloth.

FIG. 7 is an enlarged longitudinal sectional view of a main part showing a state in which the chuck is rotated upward while holding a cloth.

FIG. 8 is a perspective view showing a state where the coupler and the docking member are docked.

FIG. 9 is a plan view showing a state where a coupler and a docking member are detached.

FIG. 10 is a longitudinal sectional view of the connection box in a state where rotation of the screw rod is prevented.

FIG. 11 is a longitudinal sectional view of the connection box in a state where the screw rod can be rotated.

FIG. 12 is a perspective view of a fifth chain wheel.

FIG. 13 is an air piping diagram of a carrier member.

FIG. 14 is a block diagram of the drawer.

FIG. 15 is a block diagram of a chain motor and a cloth transport motor.

FIG. 16 is a graph showing a relationship between a torque amount and a rotation speed.

FIG. 17 is a first flowchart of a state in which a cloth removing operation is performed.

FIG. 18 is also a second flowchart.

FIG. 19 is a third flowchart.

FIG. 20 is an overall system diagram for processing cloth.

[Explanation of symbols]

 W ... cloth 4 ... pin tenter 6 ... pull-out device 8 ... swing-down device 10 ... tenter rail 16 ... tenta motor 14 ... pins 22, 24, 26, 28 ... guide rollers 30 to 46 ... ... Chain wheel 52 ... Endless chain 54 ... Carrier member 56 ... Frame 58 ... Connection member 60,62 ... Linear rail 64 ... Gear box 66,68 ... Screw rod 82 , 84 rotary actuators 86, 88 chucks 94, 96 solenoid valves 98, 100 mechanical valves 98a mechanical switch switches 106, 108 docking members 126, 128 coupler 150 width Adjustment motor 186 Disc 188 Protrusion 194 Control unit 220 Chain motor 302 Cloth transport motor

Claims (2)

(57) [Claims] 1. A web pulling device arranged on an unloading side of a web processing device, comprising: a web swinging-down means swingably suspended above an upper portion of the web-drawing device; A guide roller group consisting of a plurality of guide rollers for guiding the web, a guide chain wheel group consisting of a pair of guide chain wheels provided at both ends of the plurality of guide rollers, and a pair of return chain wheel groups; An endless chain composed of a pair of belts or chains respectively laid over the guide chain wheel group and the pair of return chain wheel groups; holding means for holding a web laid between the pair of endless chains; A chain motor that drives a pair of endless chains; a web motor that drives the guide rollers; Detecting means for detecting the rotation speed; a torque amount setting device for setting the torque amount; and a rotation speed slightly higher than the rotation speed detected by the detection means while maintaining a constant torque amount set by the torque amount setting device. A web withdrawing device comprising a control means for rotating a chain motor. 2. A rotation slightly faster than a rotation speed detected by said detection means while maintaining a constant amount of torque set by said control means by said control means only in a part of a conveyance path to said swing-off means. 2. The web drawing device according to claim 1, further comprising a selection unit that controls the chain motor to rotate at a speed.