JPH10288295A - Roll device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll device capable of being reliably stopped when fingertips or clothes are caught together with an object to be processed between rolls. SOLUTION: A roll device is provided with a pair of vertically arranged rolls 12a, 12b, a safety bar 13 arranged on the object to be processed inserting sides of the rolls 12a, 12b and between the rolls 12a, 12b at a distance, a sensor 14 for detecting the motion of the safety bar 13, a driving device for rotating and driving the rolls 12a, 12b, and a pressing device 15 for pressing a pair of rolls 12a, 12b. The sensor 14 detects the motion of the safety bar 13 according to the motion of the safety bar 13, and the driving device and the pressing device 15 are stopped on the basis of the detected signal from the sensors 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll apparatus for processing an object to be processed between a pair of rolls such as a mangle, a calender roll, and a padder roll.

[0002]

2. Description of the Related Art Conventionally, an object to be processed is sandwiched between a pair of vertically arranged rolls, and the rolls are pressed against each other.
2. Description of the Related Art There is known a roll device that presses the object to be processed and performs processing such as squeezing and compression on the object.

[0003] The roll device is provided with a configuration corresponding to the purpose or application, such as providing a rubber layer on the roll surface, or applying pressure while heating an object to be processed through a heat medium inside the roll. Processing was to be done. According to these purposes and applications, roll devices have been used under the names of mangle, calender roll, padder roll and the like.

[0004]

However, in a conventional roll device, when an object to be processed is passed between rolls,
Inadvertently, fingertips or sleeves of clothes could be involved, and fingertips and hands, sometimes even arms and body, could cause a serious accident.

[0005] From such experience, the roll device has been equipped with a safety device such as a safety plate or a safety rope that stops the roll device by touching it with hands or feet.

[0006] However, when an accident involving entrainment occurs, the operator itself is shaken, and the safety device cannot be operated quickly, which may lead to an accident.

The present invention has been made in view of such circumstances, and even when a fingertip or clothing is likely to be caught between rolls together with an object to be processed, the roll device can be reliably stopped. It is an object of the present invention to provide a roll device that can perform the roll operation.

[0008]

In order to achieve the above object, according to the present invention, a space is provided between a pair of rolls arranged vertically and a pair of the rolls on the side of the roll where a workpiece is inserted. The safety bar, a sensor for detecting the movement of the safety bar, a driving device for rotating the rolls, and a pressing device for pressing the pair of rolls, The gist of the roll device is characterized in that the sensor detects the movement of the safety bar according to the movement, and the driving device and the pressing device are stopped by a detection signal from the sensor.

The gist of the invention according to claim 2 is that the roll device is characterized in that the pressing device stops and the roll interval is widened.

The gist of the invention according to claim 3 is a roll device characterized in that the distance between the safety bar and the roll is 10 mm or less.

According to a fourth aspect of the present invention, there is provided a roll device in which a safety bar is provided so as to be vertically movable and rotatable via a support.

According to a fifth aspect of the present invention, there is provided a photoelectric tube sensor in which a sensor constantly shines light on the support, and the distance between the sensor and the support is increased by moving the support. The gist of the roll device is characterized in that a detection signal is emitted from the sensor when the light from the sensor stops hitting.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the roll device of the present invention will be described below. The roll device 10 shown in FIGS. 1 and 2 shows an experimental mangle, and has a pair of rolls 12a and 12b, a safety bar 13, a sensor 14, a driving device, and a pressing device 15.

The rolls 12a and 12b are arranged on the base 11 so as to be in the vertical position, and the lower roll 12b is moved up and down by a pressing device (hydraulic cylinder) 15 to contact the upper roll 12a. It is designed to be pressed. The rolls 12 a and 12 b are rotatably provided, and are driven by a driving device (not shown) via a chain 16 and a sprocket 17.
a to the drive shaft 18, the upper roll 12a rotates, and the lower roll 12b rises to move the upper roll 12a.
, The lower roll 12b rotates together with the upper roll 12a.

A safety bar 13 is provided on the side of the rolls 12a and 12b where the workpiece is inserted, with a space between the rolls 12a and 12b. The safety bar 13 is a bar which is provided in parallel with the rolls 12a and 12b on the side of the rolls 12a and 12b into which the workpiece is inserted. Is an obstacle that straddles the retraction path when the end of the head is caught. The diameter of the safety bar 13 is not particularly limited, but does not hinder the processing of the object to be processed, and is preferably a thickness that is easy to handle, specifically, a thickness of 30 to 50 mm. In addition to metal, plastic bars may be used.

The safety bar 13 and the roll 12
The distance between a and 12b is preferably 10 mm or less. If the interval is wider than this, it does not become an obstacle that straddles the retraction path, and it is likely that the safety bar does not move even when the fingertip or the end of the clothes gets caught.

The safety bar 13 is vertically movable and rotatable via a support 19. The support 19 is an arm having a substantially L-shape, and a rotating shaft 21 at an upper end thereof is fitted into a substantially U-shaped bearing 20 provided on the left and right sides of the base 11 so that it can freely rotate and move up and down. It has become. Both ends of the safety bar 13 are attached to each lower end of the support 19.

When the fingertip or the end of the clothes gets caught, the fingertip or the body touches the safety bar 13 straddling the retraction path, so that the safety bar 13 holds the support 19 as shown by an arrow in FIG. It is designed to rotate and move up and down via the switch.

The movement of the safety bar 13 is detected by a sensor 14, and the driving device (not shown) and the pressing device (hydraulic cylinder) are detected by a detection signal from the sensor 14.
15 stops. In this embodiment, the movement of the support 19 that supports the safety bar 13 is regarded as the movement of the safety bar 13 and the movement of the support 19 is detected.

The sensor 14 for detecting the movement of the support 19 may be anything. In this embodiment, a phototube sensor is used. In this embodiment, the sensors 14 are provided on the lower side in the bearing 20 into which the rotating shafts 21 of the left and right supports 19 are fitted, and on the base 11 side at one end of the upper roll 12a. The rotation and the vertical movement of 19 are captured.

The sensor 14 constantly shines light on the support 19, and as the support 19 moves, the distance between the sensor 14 and the support 19 increases or the light from the sensor 14 When the sensor no longer hits the support 19, a detection signal is generated from the sensor 14.

More specifically, the sensor 14 in the present embodiment constantly illuminates the support 19, and picks up the reflected light to capture the movement of the support 19. That is, when the intensity of the reflected light falls below a certain amount due to the movement of the support 19, the detection signal is issued assuming that the support 19 has moved.

The sensor can directly detect the movement of the safety bar by directly irradiating the safety bar 13 with light and picking up the reflected light.

The sensor is provided with a light-emitting portion on the side of the safety bar or on the support, so that light from the light-emitting portion always hits the sensor, and the sensor and the light-emitting portion are moved by the movement of the safety bar or the support. When the light from the light emitting unit stops illuminating the sensor or when the intensity of the light from the light emitting unit falls below a certain amount, the safety bar or the support is moved and a detection signal is issued. You can also.

In response to the detection signal from the sensor 14, the limit 22 attached to the base 11 is operated, whereby the driving device (not shown) and the pressing device 15 are stopped, and the rotation of the rolls 12a and 12b and Lower roll 12b
Is stopped, and the fingertip or the end of the clothes is prevented from being entangled.

In this embodiment, the lower roll 12b
Is lowered at the same time as the pressing of the pressing device 15 stops, so that the gap with the upper roll 12a is widened and the roll is opened.

In the above embodiment, when the safety bar 13 is not attached, the driving device (not shown) and the pressing device 15 do not operate.

In this embodiment, the limit 22 is actuated in response to the detection signal from the sensor 14, and the driving device (not shown) and the pressing device 15 are stopped by this. Alternatively, the movement of the support is detected by a sensor, and a detection signal from the sensor (for example, a signal of the light intensity level) is transmitted to a safety device and / or the support by a control device by entanglement of a fingertip or an edge of clothes. It is determined whether or not it is a movement, and only when the wrapping is performed, the driving device (not shown) and the pressing device 15 are controlled so as to be stopped. Prevention can also be provided.

[0029]

According to the roll device of the first aspect,
The sensor detects the movement of the safety bar according to the movement of the safety bar provided at an interval between the pair of rolls disposed above and below on the workpiece insertion side of the pair of rolls, and a detection signal from the sensor. As a result, since the driving device and the pressing device are stopped, even if a fingertip or clothes are likely to be caught between the rolls together with the object to be processed, the roll device can be reliably stopped.

In the roll device according to the present invention, since the pressing device stops and the roll interval is widened to release the roll, clothes or the like are likely to be caught. However, since the roll interval is immediately increased and no more rolls are involved, it is possible to enhance the certainty of prevention of the rolls.

In the roll device according to the third aspect, the distance between the safety bar and the roll is set to 10 mm or less,
When the fingertips or the ends of the clothes are caught, the safety bar is less likely to not move, so that the clogging can be more reliably prevented.

In the roll device according to the fourth aspect, since the safety bar is provided so as to be vertically movable and rotatable via the support, the movement of the safety bar can be more reliably detected. The certainty of prevention of entanglement can be further increased.

According to a fifth aspect of the present invention, in the roll device, the sensor is a photoelectric tube sensor that constantly shines light on the support, and the distance between the sensor and the support is obtained by moving the support. The detection signal is issued from the sensor when the sensor is separated or the light from the sensor stops illuminating, so the means for grasping the movement of the support and the means for grasping the movement of the safety bar can be simplified. It becomes something.

[Brief description of the drawings]

FIG. 1 is a side view showing a roll device of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is an enlarged side view showing a rotation shaft of a support, a bearing, and a sensor in the roll device of the present invention.

[Explanation of symbols]

 12a, 12b ... Roll 13 ... Safety bar 14 ... Sensor 15 ... Pressing device 19 ... Support 20 ... Bearing 21 ... Rotating shaft 22 ... Limit switch

Claims (5)

[Claims] 1. A pair of rolls arranged vertically, a safety bar provided at an interval between the rolls on the workpiece insertion side of the rolls, and a sensor for detecting movement of the safety bar, It has a driving device for rotating and driving the rolls, and a pressing device for pressing the pair of rolls. According to the movement of the safety bar, the sensor detects the movement of the safety bar, A roll device wherein the drive device and the pressing device are stopped by a detection signal. 2. The apparatus according to claim 1, wherein said pressing device is stopped, and said roll interval is widened.
The roll device as described. 3. The distance between the safety bar and the roll is 10 m.
2. The roll device according to claim 1, wherein m is equal to or less than m. 4. The safety bar according to claim 1, wherein the safety bar is vertically movable and rotatable via a support.
The roll device as described. 5. The sensor according to claim 1, wherein the sensor is a phototube sensor that constantly shines light on the support, and the distance between the sensor and the support is increased by moving the support.
The roll device according to claim 4, wherein a detection signal is issued from the sensor when the light from the sensor stops being applied.