JPH0647799U - Roll machine with safety cover - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an accident prevention device in which hands and clothes are not caught in a roll when mixing or kneading materials by using a roll machine. [Structure] In a roll machine for bringing a front roll 1 and a rear roll 2 close to each other and forcing a rolled material, a mixed material or the like between these rolls to perform rolling, mixing, etc., a free end portion around fulcrums 6 and 7 The upper safety protection plates 3 and 4 for opening and closing and the lower safety protection plates 10 and 11 are provided, and when the hands are inserted from above the rolls 1 and 2 and from the front and the rear of the rolls, the upper safety protection plates are provided. 3, 4 and lower safety protection plate 1
A safety device for a roll machine configured to operate the proximity switches 8 and 9 and the proximity switches 12 and 13 at 0 and 11 to stop rotation of the front roll 1 and the rear roll 2 in an emergency.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an accident prevention device for being caught in a roll machine such as a test roll machine, a kneading roll machine, and a calendar roll machine.

[0002]

[Prior art]

 Conventional test roll machines installed in laboratories, etc. do not have equipment and functions such as a safety cover, which may lead to accidents involving workers. There is. 1) Don't put on long sleeves, long apron, and work clothes without buttons. 2) Do not use both gloves. 3) Don't be futile, and don't get distracted except for your own work. 4) When tying the rubber, push it with a flat hand, or be sure to push it with a grip or a head. 5) The material rubber is hard, so be careful not to let it go in your hand. 6) Do not put your hands before the top of the roll. 7) Do not put your hands in the back roll over the roll. 8) Do not try to remove foreign matter in the rubber while the roll is moving. 9) When working with two or more people, be sure to signal before moving the roll. 10) Do not straddle the rotating shaft during operation.

[0003]

[Problems to be solved by the device]

 The present invention has been made in order to ensure all of the above-mentioned ten safety rules, and an object thereof is to provide an apparatus having a function that can be easily operated by an operator.

[0004]

[Means for Solving the Problems]

 The present invention relates to a roll machine for bringing a front roll 1 and a rear roll 2 close to each other to perform indent rolling, mixing, etc. of a rolled material, a mixed material, etc., between the front roll 1 and the rear roll. When trying to insert a hand from above into the bite part of 2, the gap between the free ends 3a and 4a of the upper safety protection plates 3 and 4 which opens and closes the free ends around the fulcrums 6 and 7 is opened. , The front roll and rear roll emergency stop devices are operated to operate one of the proximity switches 8 and 9, and the front roll 1 and the rear roll 2 are interlocked with each other from the front or the rear. At the time of insertion, the free ends 10a and 11a of the lower safety protection plates 10 and 11 are opened with the fulcrums 6 and 7 as fulcrums, and the other close switch 12 that activates the emergency stop device of the front roll and the rear roll. 13 configured to operate and I following a security covered roll machine, characterized in that the emergency stop rotation of the front roll and the rear section rolls.

[0005]

[Action]

 The front roll and the rear roll are brought into contact with each other or brought close to each other and rotated, and the rolled material, the mixed material and the like are dropped between the both rolls from above and pressed and rolled to mix. When the upper safety protection plate at the upper part of the roll is blown by hand to try to push the material between both rolls from above by hand, the free end of the upper safety protection plate operates around the fulcrum and By operating the stop device, the rotation of the front roll and the rear roll is suddenly stopped, that is, an emergency stop is performed. If you try to insert your hand between the front and rear of the roll between the rolls, the free end of the lower safety protection plate will rotate around the fulcrum and actuate the other proximity switch to activate the emergency stop device. Operate and stop the rotation of the front and rear rolls. After all, it prevents the hands from being caught between the rolls.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a side view of the front and rear rolls in front and rear of the safety protection cover and the proximity switch during operation, Fig. 2 is a front view of the safety protection cover, and Fig. 3 is a roll in a stopped state. FIG. 4 is a side view of the safety protection cover, and FIG. 4 is a side view of the entire roll machine. Reference numerals 1 and 2 are front rolls and rear rolls that are arranged side by side in parallel with each other in the axial direction. The front rolls and the rear rolls are mounted on a frame A, respectively, and are gears axially fixed to the front roll 1 and the rear roll 2. Occlusally rotated in the indicated direction. A chain wheel F of a reduction gear C of a drive motor B and a chain wheel F which is rotated in conjunction with a chain E are attached to the front roll 1 shaft, and a rear roll 2 is adjusted by an adjusting device G attached to the frame A. It is configured to approach or separate from the front roll 1.

In FIGS. 1, 3 and 4, a plurality of mounting plates H and I provided on both sides of the upper portion of the frame A have a plurality of fixed covers 5 arranged side by side with a clearance such that a hand cannot be inserted. The lower ends of the safety protection plates 3 and 4 are pivotally attached at fulcrums 6 and 7, respectively, so that their free ends 3a and 4b can be opened and closed. When the free ends 3a and 4a of the upper safety protection plates 3 and 4 are rotated in the opening direction around the fulcrums 6 and 7, the surfaces facing the mounting plates H and I in the vicinity of the free ends 3a and 4a. Alternatively, one of the proximity switches 8 and 9 for operating the emergency stop device is arranged on the surface of the mounting plates H and I facing the vicinity of the free end. Further, the base ends of the lower safety protection plates 10 and 11 are pivotally attached to the fulcrums 6 and 7, and the free ends 10a and 11a thereof can be opened and closed. At the base end portions of the lower safety protection plates 10 and 11, there are provided operators 10b and 11b which operate integrally with the lower safety protection plates 10 and 11, and the attachment of the tip end portions of the operators 10b and 11b is performed. The other proximity switches 12 and 13 for operating the emergency stop device are arranged on the surface facing the plates H and I. The other proximity switches 12 and 13 are activated when the free ends of the lower safety protection plates 10 and 11 are rotated inward. Reference numeral 14 denotes a fixed bar, which is horizontally mounted on the lower safety protection plates 10 and 11 on both sides. In the above structure, as shown in FIG. 4, when the power switch is turned on (step 1), the front roll 1 and the rear roll 2 are rotated in the arrow direction in FIG. 1 (step 2). That is, a normal operating state is formed. Under this condition, the upper safety protection plates 3 and 4 and the lower safety protection plates 10 and 11 are both closed, and the operator manually forces the upper safety protection plates 3 and 4 and the lower safety protection plates 10 and 11 into consideration. Unless it is opened manually, the same hand does not reach the biting part of the front roll 1 and the rear roll 2.

When an operator accidentally opens the upper safety protection plates 3 and 4 in the direction of the arrow (see FIG. 1) about the shaft attachment portion as a fulcrum (step 3), the upper safety protection plates 3 and 4 are opened. At the same time, one of the proximity switches is activated (step 4). By operating this one proximity switch, the emergency stop device (this device is a means for releasing the coupling of the conventionally known clutch mechanism and activating the brake mechanism) (step 5), and as a result, The rotations of the front roll 1 and the rear roll 2 are emergency stopped (step 6). That is, before the operator's hand opens the upper safety protection plates 3 and 4 and reaches the rotating front roll 1 and rear roll 2, the front roll 1 and rear roll 2 are brought to an emergency stop. .

On the other hand, when the operator accidentally opens the lower safety protection plates 10 and 11 in the direction of the arrow (see FIG. 1) with the shaft attachment portions 6 and 7 as fulcrums (see FIG. 1) (step 7), the lower safety protection plates 10 and 11 are With the opening operation of 11, the other proximity switch is activated (step 8). The operation of the other proximity switch activates the emergency stop device (step 5), and as a result, the rotation of the front roll 1 and the rear roll 2 is in the same state as when the one proximity switch is activated. It is stopped (step 6). That is, before the operator's hand opens the lower safety protection plates 10 and 11 to reach the rotating front roll 1 and rear roll 2, the front roll 1 and rear roll 2 are stopped emergency. .

[0010]

[Effect of device]

 As described above, according to the present invention, the front roll and the rear roll supported on the frame are provided on the upper part, the front part, and the rear part of the roll so that the upper safety protection plate and the lower safety protection plate covering these rolls can be rotated as fulcrums. , When the free end of the upper safety protection plate or the free end of the lower safety protection plate is opened to reach the biting side of the rolls 1 and 2 in the rotating state, the upper safety protection plate 3 , 4, or one of the proximity switches 8 and 9 or the other proximity switch 12 and 13 is actuated in accordance with the opening operation of the lower safety protection plates 10 and 11, and the rotations of both rolls are emergency stopped. Therefore, before the worker's hand reaches the biting side of the rotating rolls 1 and 2, the rotation of the rolls 1 and 2 can be stopped in an emergency. Therefore, it is possible to prevent the hands or the like from being caught between the rotating rolls 1 and 2, the effect of preventing harm is remarkable, and the structure is simple and the operation is reliable.

[Brief description of drawings]

FIG. 1 is a side view showing an operating state of an upper safety protection cover and a lower safety protection cover for front and rear rolls.

FIG. 2 is a front view of an upper safety protection cover portion and a lower safety protection cover portion.

FIG. 3 is a side view of a front roll, a rear roll and a safety cover.

FIG. 4 is a side view of a roll machine embodying the present invention.

FIG. 5 is a flowchart explaining the operation of the motor and the safety protection cover.

[Explanation of symbols]

 1 front roll 2 rear roll 3,4 upper safety protection plate 3a, 4a free end of upper safety protection plate 5 fixed cover 6,7 fulcrum 8,9 one proximity switch 10,11 lower safety protection plate 10a, 11a lower part Free end of safety protection plate 10b, 11b Operators 12, 13 Other proximity switch

Claims (1)

[Scope of utility model registration request] 1. A roll machine for bringing a front roll 1 and a rear roll 2 close to each other to perform inward rolling, mixing, etc. of a rolled material, a mixed material, etc., between these rolls. When trying to insert a hand into the biting part of the roll 2 from above, a gap is opened between the free ends 3a and 4a of the upper safety protection plates 3 and 4 which open and close the free ends around the fulcrums 6 and 7. The front roll and the rear roll emergency stop device are operated to operate one of the proximity switches 8 and 9, and the front roll 1 and the rear roll 2 are engaged with each other from the front or the rear with hands. When trying to insert the other proximity switch 12, the free ends 10a, 11a of the lower safety protection plates 10, 11 are opened with the fulcrums 6 and 7 as fulcrums to operate the front roll and rear roll emergency stop devices, 1 3. A roll machine with a safety cover, characterized in that the rotation of the front roll and the rear roll is emergency stopped.