JPH0380704B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an automatic doffing mechanism in an automatic fabric roll changing device.

[Conventional technology]

Currently, when replacing the fabric roll on a loom, the loom is stopped when the woven fabric reaches a predetermined amount, and the cutter is used to artificially cut the fabric in the width direction, and the finished fabric roll is removed from the loom and transferred to a trolley. On the other hand, it is common to transfer the empty roll to a loom, install it, wrap the fabric end around it, and continue weaving. However, such replacement work takes up a surprising amount of time, and especially in high-speed looms, the loom stops, resulting in a reduction in production. Therefore, attempts have been made to use recent robotics technology to automatically replace such rolls. Currently, a robot that can do this has not yet been realized.

Problems to be Solved by the Invention The present invention aims to provide an automatic doffing mechanism that enables automatic loading and unloading of a cloth roll and a bearing, which is a necessary element in an automatic cloth roll changing device. This is an issue to be addressed.

[Means for solving technical problems]

Automatic replacement of the cloth-wrapped roll 1 is performed when the cloth-wrapped roll 1
After winding up a predetermined amount of cloth W (see Fig. 1), a cart 2 is placed oppositely in front of the loom, and the roll changing arms 6, 6 of this cart 2 move the cloth roll 1 from the loom side onto the cart 2. Transferred to (see Figures 2 to 4),
Next, the empty roll 8 loaded on the cart 2 is transferred to the loom T and mounted on the loom T (see FIGS. 5 to 7). In addition, numeral 3 is a press roll that guides the woven cloth, 4 is a cloth-wound press roll, 5 is a rotation stopper, and 7, 7 are rolls that support the cloth-wrapped roll 1 transferred onto the cart 2 while rotating. A mounting portion 9 is a roll rest that supports the cloth-wrapped roll when the cloth-wound roll is attached or detached, A is a guide roll, and B is a clothing roll. In such automatic exchange, the state in which the tip chucks 6a of the roll exchange arms 6, 6 are gripping both ends of the cloth roll 1 attached to the loom bearing (see Fig. 3) is detected and the drive device is driven. Then, the bearing and the cloth-wound roll 1 are disconnected, and the cloth-wound roll 1 is
must be set in a state where it can be transferred to the trolley 2, and the state in which the roll exchange arms 6, 6 have gripped the empty roll 8 and moved to the loom bearing mounting position (Fig. 7) is detected and driven. It is necessary to drive the device and connect the fabric roll 1 to the roll bearing. Therefore, in the present invention, in order to cause the drive device to attach and detach the roll bearing 11 and the cloth-wound roll 1, the approach detection means detects the approach of the roll exchange arms 6, 6 to the cloth-wound roll 1 loading/unloading position.
D ₁ and attachment/detachment detection means D _{2 to 3} for detecting the mounting and disassociation state of the roll bearing and the cloth-wrapped roll are provided, and a roll exchange arm entry signal S ₁ outputted by the detection means D _{1 to 2} and the cloth-wound roll attachment are provided. The drive unit performs the attachment/detachment operation based on the AND condition with the signal S ₂ , and also the roll exchange arm entry signal S ₁ and the cloth-wound roll release signal S ₃
According to the AND condition, the drive device is made to perform the mounting operation.

【Example】

Hereinafter, the present invention will be explained in more detail based on Examples. First, key grooves 1a, 1a are bored in the end surface of the fabric roll 1 of this embodiment, as shown in FIG. A spline groove is formed in the roll drive shaft 10 of the loom, and the roll bearing 11 is slidably fitted along the spline groove only in the direction of the drive shaft, as shown in FIG. A cork 21 is fixedly installed at the tip of the bearing 11 so as to be inserted into both ends of the fabric roll 1 to support the roll. A key member 22 that fits into the key groove 1a on the end face of the fabric roll 1 is provided on the outer periphery of the cork 21 so as to be slidable in the axial direction (in the horizontal direction according to the figure), and this key member 22 is attached to the roll bearing. A compression spring 23 is interposed in the roll bearing 11, and is always biased toward the tip of the roll bearing 11. Note that the roll bearing 11 is installed so that the key member 22 stops at a predetermined position.
is provided with a stopper part. Further, a bearing 11a is inserted into the outer diameter portion of the roll bearing 11 in such a manner that its movement in the axial direction is restricted.
A worm gear 2 is attached to the outer diameter of this bearing 11a.
4 is inserted in a fixed state. A trapezoidal worm screw 24a is formed on the outer periphery of this worm gear 24, and this worm screw 24a is rotatably supported by the frame structure of the drive device 20 and is connected to a drive gear 25 attached to the main shaft of the motor M and outer peripheral teeth 26a. The transmission elements 24a, 2 are meshed with a trapezoidal screw 26b formed on the inner periphery of the meshing annular gear 26, and the worm gear 24, the drive gear 25, and the annular gear 26 form a sequence of transmission elements 24a, 2.
6b, 26a, 25・M are the driving means 2 as a whole.
0 is formed. Note that the worm gear 24
There are three holes bored in the axial direction, and a pin P vertically disposed on the frame of the drive device 20 is inserted into each hole, so that the worm gear 24 is unable to rotate. Therefore, when the motor M, which is the drive source, rotates in the forward direction, the rotation of the annular gear 26 is converted into a rightward movement of the worm gear 24 by the screw action, and the roll bearing 11 moves forward together with the worm gear 24 to move the end of the cloth-wound roll 1. Coke 21 enters hole 1b. At that time, when the key member 22 located on the outer periphery does not face the keyway 1a of the cloth-wound roll 1, the key member 22 comes into contact with the end surface of the cloth-wound roll 1, but if the roll bearing 11 moves forward further. Since the spring 23 compresses the compression spring 23 and enters the roll bearing 11, the bearing 11, that is, the coke 21, is not blocked, and in this state, later, when the drive shaft 10 of the loom T rotates, the key member 22 will move into the keyway 1a. Accordingly, the compression spring 23 causes the fabric roll 1 to
are urged in the direction of the end face, and are fitted together, and are restored normally (the fabric roll 1 and the bearing 11 are connected). On the other hand, when the motor (drive source) M rotates in reverse, the cork 21 and the key member 22 move back together with the worm gear 24, and the connection with the fabric roll 1 is released. As an entry detection means for detecting the entry of the roll exchange arms 6, 6, for example, a photoelectric detector _D1 is used.
is installed on the loom T (for example, on the side of the roll rest 9), and the reflective plate R, which is the detected part, is attached to a predetermined position of the roll changing arms 6, 6, and when the arms 6, 6 reach the disengagement position. When this occurs, the photoelectric detector _D1 outputs a roll exchange arm entry signal _S1 . Further, as a detection means for detecting attachment and disassociation for detecting the maximum output point position and the maximum insertion point position of the roll bearing 11, a proximity or Pressure switches D ₂ and D ₃ are placed at predetermined positions with a constant interval left and right. Therefore, an AND condition is established between the roll exchange arm entry signal _S1 from the photoelectric detector _D1 and the mounting signal _S2 from the switch _D2, which indicates the state in which the cloth-wrapped roll is mounted, which is the most advanced position of the bearing, through the control device Cont. If the drive motor M is reversed, the connection between the cloth-wrapped roll 1 and the roll bearing 11 will be released, and the cloth-wound roll 1 will be placed on the roll rest 9 in standby for transfer. That is, as shown in FIG.
1 is at the maximum position, and the switch D ₃ is in a state where a signal S ₃ indicating the cloth-wound roll attachment/detachment state is emitted. At this time, the roll changing arms 6, 6 on the cart side are already in a position on the loom where they can grip the cloth roll 1 that has been detached from the loom. Further, the roll changing arms 6, 6 grasp the empty roll 8 on the trolley and transfer it to the driving device 20 on the loom side.
The vehicle enters onto the roll rest 9 of the vehicle. Then, in that state, the roll bearing 11 is at the most retracted position, and the switch _D3 is emitting the signal _S3 indicating the cloth-wound roll attachment/detachment state, so the roll exchange arms 6, 6 grip the empty roll 8. When the vehicle enters a predetermined position, the photoelectric detector D ₁ issues an entry signal S ₁ , so if the drive motor M is rotated in the normal direction via the control device Cont. according to the AND condition of these S ₁ and S ₃ ,
The cork 21 and key member 22 of the roll bearing 11 move forward and connect with the empty roll waiting on the rest 9,
The installation of the empty roll 8 is completed. The present invention has been described above based on examples, but
The present invention is not limited to such specific examples,
The device that drives the bearing attachment/detachment mechanism is driven by an AND condition between the approach signal _S1 of the roll exchange arm and the signal _S2 or _S3 indicating the loading/unloading position of the roll bearing and the cloth-wrapped roll, thereby connecting the bearing and the cloth-wrapped roll. Various design modifications are possible without departing from the automatic doffing function that performs and cancellation.

【Effect of the invention】

As explained above, according to the present invention, a full fabric roll can be removed from the roll bearing of the loom by simply moving the roll changing arm of the cart into a predetermined position on the loom, and then the empty roll can be reset. This makes it possible to automatically control the loading and unloading operations, and eliminates the need for a line to transmit command signals from the cart to the control device on the loom, which not only reduces costs but also simplifies the signal line. This makes it possible to provide an automatic dosing mechanism with fewer malfunctions. In this manner, the present invention can contribute to a significant increase in the operating rate of a loom by realizing rational automatic replacement of cloth-wound rolls.

[Brief explanation of drawings]

FIGS. 1 to 7 are explanatory diagrams showing the auto-dosing operation process of the present invention, FIG. 8 is a partially sectional front view showing an embodiment of the auto-dosing mechanism according to the present invention, and FIG. 9 is a FIG. 2 is an end view of a fabric roll to which the mechanism is applied. DESCRIPTION OF SYMBOLS 1... Cloth-wrapped roll, 2... Cart, 6... Roll exchange arm, 9... Roll rest, 10... Drive shaft, 11... Roll bearing, 20... Drive device,
D ₁ to D ₃ ...detector or switch, S ₁ to _{S 3} ... control signal.

Claims (1)

[Claims] 1. A cart 2 in which a fabric roll 1 supported by a roll bearing 11 of a loom T with a part of the bearing 11 intertwined on both sides of the roll is placed opposite to the front of the loom T. In the fabric roll changing device, the roll changing arms 6, 6 transfer the empty rolls 8 from the loom T onto the cart 2, and transfer the empty rolls 8 loaded on the cart 2 to the loom side and reset them in the roll bearings 11. (a) Drive means 2 that causes the roll bearing 11 to reciprocate in the axial direction in a stroke section between the maximum exit point and the maximum entry point by forward and reverse rotation of the drive source M.
0; (b) approach detection means D ₁ that issues a roll exchange arm approach signal S ₁ when the detected part R of the roll exchange arm 6 is detected; (c) the detected part Q on the roll bearing 11 side is ( _d ) A cloth-wrapped roll disengagement signal _S is generated when the detected portion Q on the roll bearing 11 side is located at the maximum retraction point. (e) _{the arm entry signal S 1 and} the cloth- _wrapped roll mounting signal;
S ₂ and the cloth-wrapped roll release signal S ₃ are input, and when the AND condition of the arm entry signal S ₁ and the cloth-wrapped roll installation signal S ₂ is satisfied, a reverse rotation signal is output to the drive source M, and conversely, the arm entry signal is A control device that outputs a normal rotation signal to the drive source M to control the reciprocating motion of the roll bearing ₁₁ when an AND condition between _S1 and the cloth-wound roll dissociation signal S3 is satisfied.
An automatic dotting mechanism characterized in that a loom T is equipped with Cont. and;