JPH0734942Y2 - Safety device for roving machine simultaneous transfer device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention has a main body fixedly provided in front of a base of a roving frame, and a full bobbin mounting peg and an empty bobbin mounting peg are alternately moved left and right in two rows. To prepare for this, move the bobbin suspension arm provided on the main body back and forth and up and down to take out the full bobbin on the bobbin wheel all at once, and then supply the empty bobbin on the peg to the bobbin wheel all at once. The present invention relates to a safety device for a pipe changing device of a roving spinning machine that performs a pipe changing operation.

[0002]

2. Description of the Related Art A tube changer for taking out full bobbins from a roving machine all at once and supplying empty bobbins all at once is equipped with an exchange arm for suspending the upper part of the bobbin to perform tube change operation. As shown in FIG. 4, the exchange arm has a flange portion 2 of the bobbin 1 and an exchange arm 5
In order to stabilize the bobbin 1 which is being changed,
Steel 3 is fixed to the lower surface of the flange portion 2 of the bobbin 1, and a magnet 6 is incorporated in the upper surface of the edge of the bobbin receiving recess 4 so that the magnet 6 can adsorb the steel 3 of the bobbin 1 and perform stable holding. ing.

Conventionally, by moving the exchange arm 5 back and forth and up and down, the full bobbins on the bobbin wheel of the roving machine are taken out all at once on the full bobbin mounting pegs of the transfer device, and then the empty bobbin of the transfer device is mounted. The empty bobbins on the pegs were being supplied all at once onto the bobbin wheels.

[0004]

However, in the above-mentioned conventional structure, foreign matter 8 such as cotton wool is caught between the bobbin receiving concave portion 4 of the exchange arm 5 and the flange portion 2 of the bobbin 1, and the bobbin 1 If the flange portion 2 of the bobbin is deformed or damaged, the axis of the bobbin 1 and the center of the bobbin wheel 7 do not coincide with each other, as shown in FIG. As a result, the center of gravity of the bobbin 1 is located on the right side of the figure with respect to the center of the bobbin wheel 7 when the interchangeable arm 5 is lowered and the retractable arm 5 is lowered. Or, it was not attached and returned while being caught by the exchange arm 5. Further, when the full bobbin is taken out from the bobbin wheel 7 and inserted into the full bobbin insertion peg, the lower end of the full bobbin may contact the peg and the full bobbin may fall backward (toward the machine base). These pipe replacement mistakes have a serious problem of causing damage to the pipe replacement device and the roving frame.

[0005]

In order to solve the above problems, the present invention has a main body fixedly arranged in front of a machine stand of a roving machine, and a large number of full bobbin mounting pegs and empty bobbins are provided in the main body. A conveyor with pegs for mounting alternately arranged in two rows is provided so that it can be moved to the left and right, and a bobbin suspension replacement arm corresponding to each bobbin wheel alternately arranged on the bobbin rail is moved back and forth and up and down. In preparation for possible, in the transfer device of the roving machine which performs the transfer operation to simultaneously supply the full bobbin on each bobbin wheel onto the peg by the exchange arm and then supply the empty bobbin on the peg to the bobbin wheel simultaneously. It is located slightly below the bobbin locus during the normal transfer operation, and between the bobbin wheel rows before and after the bobbin rail, between the peg rows before and after the conveyor, and at least two points between the bobbin rail and the conveyor. In addition, a control device is provided to dispose photocells facing each other in the longitudinal direction on both sides of the machine base in the longitudinal direction, and to stop the switching operation when the projection of the photocells is interrupted within a predetermined time. It is characterized by being formed.

[0006]

[Operation] After the full bobbin on the bobbin wheel is taken out all at once by the exchange arm, the exchange arm is mistakenly inserted due to a mistake in insertion of the empty bobbin during the tube replacement operation for simultaneously supplying the empty bobbin on the peg to the bobbin wheel. If the empty bobbin is suspended and the bobbin wheel returns to the peg position, the empty bobbin falls on the bobbin wheel toward the front of the machine base, or the full bobbin falls backwards on the peg, the light emission from the photocell is interrupted. The switching operation is stopped via the control device by the interruption.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A case where the present invention is applied to the simultaneous transfer device described in JP-A-57-106729 or JP-A-58-61478 will be described.

In FIG. 1, reference numeral 60 denotes a roving frame, and an empty bobbin mounting peg 72A and a full bobbin mounting peg 72B are provided on the front side of the machine frame while maintaining a pitch P equal to the inter-weight gauge of the roving frame 60. A double-row peg conveyor 77 and a main body 71 of the pipe changing device 70 arranged in a staggered manner between the front and rear rows, respectively.
Is fixedly attached. The peg conveyor 77 is intermittently rotated by the motor M9 during the operation of the roving machine 60, and the empty bobbin supplying section 73 at one end of the peg conveyor 77 is operated manually or by an empty bobbin supplying device (not shown).
6A is sequentially mounted on the peg 72A. Reference numeral 74 denotes an exchange arm of the pipe exchange device 70, the lengths of which are alternately different so as to correspond to the zigzag pegs 72A and 72B on the peg conveyor 77, and the tip end thereof is formed in a bifurcated shape. The interchangeable arm 74 is moved back and forth by a well-known Scott-Russell mechanism 75a having a forward-backward movement motor M8 as a drive source, and as shown in FIG.
It moves up and down by the Russell mechanism 75b.

Next, the switching operation will be described. An empty bobbin 76A is sequentially mounted on the peg 72A on the peg conveyor 77,
The mounted empty bobbins 76A are made to stand by at positions corresponding to the roving bobbins 76B being wound by the roving machine 60, respectively. When the roving frame 60 is full and the molded full bobbin 76B is lowered together with the bobbin rail 61 to a predetermined pipe changing position (state of FIG. 2), the exchange arm 74 of the pipe changing device 70 advances to the roving frame 60 side, After suspending the full bobbin 76B on the bifurcated portion at the tip thereof, the bobbin 76B is retracted. Peg conveyor 7 on the way back
When 7 moves by one pitch P of the pegs 72A, 72B (on the left side in FIG. 1), the suspended full bobbin 76B passes between the empty bobbins 76A on the peg conveyor 77, and the full bobbin on the peg conveyor 77 is mounted. It is attached to the peg 72B and fried. Next, when the doffing of the full bobbin 76B is completed, the peg conveyor 77 is again moved by one pitch P.
Just move (to the right side of Fig. 1), and place the empty bobbin 7
6A corresponds to the exchange arm 74, and an empty bobbin 76A is hung on the exchange arm 74 and is advanced to the roving frame 60 side again. During the forward movement, the peg conveyor 77 again moves by one pitch P (to the left side in FIG. 1), and the suspended full bobbin 76A passes between the full bobbins 76B doffed on the peg conveyor 77 and the roving frame 60 is passed. The bobbin wheel 62 on the bobbin rail 61 is mounted.

As described above, in this normal switching operation, the empty and full bobbins 76A and 76B draw the bobbin locus 90 shown as a dotted line in FIG. As shown in FIG. 1, horizontally long brackets 78 and 79 are attached to both side surfaces of a main body 71 of the pipe changing device 70. The brackets 78 and 79 and the light projectors PJ1 and PJ1 facing each other in the longitudinal direction receive light. Photocells 81 and 82, which are composed of containers RC1 and RC2, are attached. Further, the projector P that faces the side plate 60a of the roving frame 60 in the longitudinal direction is also provided.
A phototube 83 composed of J3 and a photodetector RC3 is attached. These photocells 81, 82, 83 are arranged so as to project light slightly below the bobbin locus 90, and the photocell 81 is almost on the center line of the peg conveyor 77, and the phototube 82 is the peg conveyor 77 and the bobbin rail 6.
A phototube 83 is provided substantially in the middle of the position of 1 so as to be located substantially on the center line of the bobbin rail 61. This allows
When the bobbin wheel 62 is not mounted with the empty bobbin 76A suspended from the exchange arm 74 during the pipe changing operation, the empty bobbin 76A is returned from the position of the bobbin wheel 62 to the positions of the pegs 72A and 72B in the suspended state. A first bobbin locus 91 through which the bobbin 76A passes, a second bobbin locus 92 through which the empty bobbin 76A falls forward on the bobbin wheel 62, and a third bobbin 76B through which the full bobbin 76B falls backwards on the peg 72B. Each bobbin locus 91, 92, 93 of the bobbin locus 93 is provided with two photoelectric tubes 81, 82 (8
The projection of 3) will come across. As is clear from FIG. 2, among these photoelectric tubes 81 to 83, the abnormal bobbin that draws the three bobbin trajectories 91 to 93 is detected only by the photoelectric tube 82 provided in the overlapping portion of the three bobbin trajectories 91 to 93.
Alternatively, it can be seen that a combination of photocells 81 and 83 may be used. The photocell 81 is connected to the pegs 72 before and after the peg conveyor 77.
Full bobbin 7 that fell between A and 72B along the machine longitudinal direction
6B can also be detected, and the photocell 83 is mounted on the bobbin rail 6
It is also possible to detect an empty bobbin 76A that has fallen along the machine longitudinal direction between the front and rear bobbin wheels 62 on the No. 1 machine. Photocell 8
1, 82 and 83 are empty, the full bobbins 76A and 76B fall down, or the empty bobbin 76A returns while being suspended from the exchange arm 74.
It is electrically connected to the control circuit shown in FIG. 3 so that the switching operation is stopped when the light projection is blocked by the abnormal bobbin.

In FIG. 3, 111 is a motor circuit for forward / backward movement of the exchange arm 74, 112 is an on / off control circuit for automatic operation of the pipe replacement operation by each motor, and 113 is a forward / backward movement motor M.
8 forward / reverse rotation control circuit, 114 is an abnormality detection circuit, 11
5, 116 and 117 are light projectors PJ1, PJ2 and PJ, respectively.
3 and the photodetectors RC1, RC2, RC3, and a control circuit of a photoelectric switch including phototubes 81, 82, 83. Hereinafter, these circuits will be referred to as 111, 112, ... 117.
I will write. Note that, in FIG. 3, each motor circuit other than the longitudinal movement motor M8 and the automatic operation control circuit for the pipe replacement operation by those motors are omitted.

Next, the operation of the safety device will be described. When the push button switch PB of the circuit 112 of FIG. 3 is turned on, the relay RYB is excited, the automatic operation of the switching operation is started by the circuit (not shown), and the relay contact RYB is closed to form a self-holding circuit. Also, the circuit, 115, 11
Power is also supplied to each of the photoelectric switches 6 and 117, and the photoelectric tube 8
1,82,83 start to work. Along with the excitation of the relay RYB, the forward relay RYZ1 (not shown) of the exchange arm 74 is excited, the relay contact RYZ1 of the circuit 113 is closed, the forward / backward movement motor M8 is normally rotated, and the exchange arm 74 is moved forward. After that, the above-mentioned pipe replacement operation is sequentially performed according to an automatic operation control circuit (not shown). The exchange arm 74 is retracted when a relay RYZ2 (not shown) for exchanging the exchange arm 74 is excited by a signal from a limit switch (not shown) and the relay contact RYZ2 of the circuit 113 is closed.

During the switching operation, the full bobbin 76B
Falls backward on the peg 72B, or the front and rear pegs 72
A, 72B fall in the longitudinal direction, the empty bobbin 76A falls forward on the bobbin wheel 62, or the front and rear bobbin wheels 62 fall in the longitudinal direction, or
The exchange arm 74 moves from the bobbin wheel 62 position to the peg 72.
When the empty bobbin 76A is returned to the position of A, 72B in a suspended state, the empty bobbin 76A, 76B appears below the bobbin trajectory 90, and if even one of the light projectors PJ1, PJ2, PJ3 blocks the light projection, Relay contact PH1 or PH2 or PH3 is closed and relay RYC is excited. Then, the relay contact RYC of the circuit 112 opens,
The relay RYB is demagnetized, and the automatic operation of the tube replacement operation by each motor is stopped. As a result, it is possible to prevent damage or damage to the machine due to leaving the abnormal bobbin. Since three photocells 81, 82, and 83 are provided in the present embodiment, an empty bobbin that tilts longitudinally between the front and rear bobbin wheels on the bobbin wheel also tilts longitudinally between the front and rear pegs on the peg conveyor. Although both full bobbins can be detected, the photoelectric tube 83 may be omitted if the empty bobbin does not tilt in the longitudinal direction.

[0014]

As described above, according to the present invention, the bobbin wheel row before and after the bobbin rail is located at a position slightly lower than the bobbin locus during the normal bobbin changing operation in the simultaneous bobbin changing device of the roving machine. Between the front and rear peg rows on the conveyor, and at least at two or more locations between the bobbin wheel and the conveyor, the photocells facing each other in the longitudinal direction are arranged on both sides of the machine base in the longitudinal direction. Since a control device was installed to stop the switching operation when it was cut off during the time, an empty bobbin that returns from the bobbin wheel position to the peg position in the suspended state on the replacement arm or an empty bobbin that falls forward on the bobbin wheel. Even if there is a bobbin or a full bobbin that falls backward on the peg, it is possible to detect them and stop the switching operation. Furthermore, since the photocells are arranged at least at one place between the bobbin wheel rows and between the front and rear pegs on the conveyor,
With this photoelectric tube, it is possible to detect a bobbin that falls along the machine base longitudinal direction. As a result, troubles such as breakage and damage of the pipe replacement device and the roving frame due to the pipe replacement error can be prevented in advance.

[Brief description of drawings]

FIG. 1 is a plan view of a roving frame and a simultaneous transfer device.

FIG. 2 is a side view of FIG.

FIG. 3 is a motor circuit and a motor control circuit.

FIG. 4 is a partial cross-sectional view when the bobbin is suspended on an exchange arm.

FIG. 5 is an overall view when the exchange arm comes to a bobbin wheel position.

[Explanation of symbols]

60 Rover, 62 Bobbin Wheel, 70 Tube Changer, 71 Main Body, 74 Exchange Arm, 72A Empty Bobbin Mounting Peg, 72B Full Bobbin Mounting Peg, 7
6A empty bobbin, 76B full bobbin, 81, 82, 8
3 Phototube, 91 1st bobbin trajectory, 92 2nd bobbin trajectory, 93 3rd bobbin trajectory

Claims (1)

[Scope of utility model registration request] 1. A conveyor in which a main body is fixedly arranged in front of a base of a roving machine, and a large number of full bobbin mounting pegs and empty bobbin mounting pegs are alternately arranged in two rows on the main body. In addition to being equipped with bobbin rails, bobbin wheels are provided with replacement arms for bobbin suspension that can be moved up and down and up and down. In a tube changing device of a roving frame, which performs a tube changing operation in which empty bobbins on the peg are simultaneously supplied to the bobbin wheel after being simultaneously taken out on the peg, a position slightly below the bobbin locus during the normal tube changing operation. And photoelectric cells that oppose each other in the longitudinal direction on both sides in the longitudinal direction of the machine base, between the bobbin wheel rows before and after the bobbin rail, between the front and rear peg rows on the conveyor, and at least at two or more locations between the bobbin rail and the conveyor. And a control device for stopping the tube changing operation when the projection of the photocell is interrupted within a predetermined time. .