JP3137667U - Protective guard - Google Patents

Abstract

Provided is a protective guard that not only ensures the safety of an operator, but also has a simple structure, is easy to attach and detach, and can be easily changed in position.
A support plate and a guard plate 5 in which at least one guard plate support portion 6 is connected to one side, and a recess or projection provided in the support column 1 and a projection or recess provided in the guard plate support portion are fitted. By locking, the guard plate is prevented from rotating in the circumferential direction of a circle around the axis of the support column.
[Selection] Figure 1

Description

  The present invention relates to a simple safety device for ensuring the safety of an operator in an industrial machine such as a press machine.

  Conventionally, in order to ensure the safety of workers, industrial machines, especially press machines, have been equipped with a light-type safety device on the front, and when a part of the worker's body enters the work area, the machine stops or operates. No safety measures have been taken.

  As another method, a physical safety device as shown in Patent Document 1 has also been proposed. In this apparatus, the left and right side surfaces and the front surface on the press bolster are each surrounded by an impact-resistant transparent plate, each transparent plate can be separately removed from the bolster, and the front transparent plate is supported on the side edge. The door is supported by a shaft so as to be rotatable, and an opening / closing detection sensor is attached to the door, and an operation stop function of the press machine is provided by an opening detection signal of the sensor.

JP-A-6-15493

  In the case of the above-described optical safety device, if it is intended to be installed not only on the front surface but also on the side surface, three sets of sensors are required, and there is a problem that the price becomes expensive. Further, the side surface of the press machine may interfere with the sensor beam when a material supply / unloading device is connected or an air blower is installed.

  Further, in the safety device using the transparent plate shown in Patent Document 1, the transparent plate on the side surface is fixed, so there is a problem when trying to change the position of the material supply / discharge device and the air blower by exchanging the mold. It was.

  In view of the above-described problems, the present invention has an object to provide a guard that can not only ensure the safety of an operator, but also has a simple structure, is easy to attach and detach, and can be easily changed in position.

  In order to solve the above-mentioned problem, the present invention comprises a support plate and a guard plate in which at least one guard plate support part is connected to one side, and a recess or protrusion provided on the support post and a protrusion provided on the guard plate support part. Alternatively, the guard plate is configured to prevent rotation of the guard plate in the circumferential direction of a circle centered on the axis of the support column by fitting and locking the recess.

  The guard plate support portion can be rotated with respect to the column in such a manner that it is not detached in a direction perpendicular to the axis of the column in the position released from the fitting engagement with the recess or projection of the column. It is desirable to be arranged in.

  It is preferable that the guard plate support portion is also configured to be fitted and locked with a recess or protrusion provided in the support column by its own weight.

  Furthermore, it is desirable that the column is cylindrical.

  The recess provided in the support column is connected to a guide groove along the axis on the surface of the support column, a plurality of auxiliary grooves connected to the groove and extending vertically from the groove, and a tip portion of each of the auxiliary grooves. In addition, it is possible to take a configuration including a locking recess formed in the column axial direction.

  Further, the guard plate support portion is formed in an annular shape, and a locking projection is formed on a part of the inner surface, and the locking projection is slidable in the guide groove and the auxiliary groove of the column. It is preferable to restrict the guard plate.

  More preferably, the support column is arranged vertically and the locking recess is connected downward with respect to each auxiliary groove.

  In the guard according to the present invention, the guard plate is fixed by fitting and locking the guard plate and the support column, so that the operator can be prevented from inserting a hand into the machine and the fitting lock is released. This makes it easy to move the position of the guard plate up and down, and makes it extremely easy to deal with the guard plate when trying to change the position of the material feeding / unloading device and the air blower by exchanging dies. Further, since the structure is simple, the manufacturing cost is low, and it is possible to provide an inexpensive and reliable safety device.

  Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view of an embodiment of a protective guard according to the present invention. This embodiment includes a support 1 and a guard plate 5. A guide groove 2 is formed on the surface of the support column 1 along the axial direction, and a plurality of auxiliary grooves 3 are formed so as to be connected to the guide groove in a direction perpendicular to the groove from one side of the guide groove 2. ing. A locking recess 4 is formed further downward at the tip of each auxiliary groove 3. A cross-sectional view of the support along the line A-A 'in FIG. 1 is shown in FIG. As is apparent from the drawing, the guide groove 2, the auxiliary groove 3, and the locking recess 4 are in communication with each other and are recessed with respect to the surface of the column 1. As the support material, any material having strength and workability can be used, but metal, particularly aluminum, is most suitable in consideration of workability, price and weight.

  On the other hand, the guard plate 5 is formed of a square plate and can be used as long as it does not easily break or deform. If possible, a transparent plastic plate such as acrylic is desirable. One side of the guard plate 5 is held and fixed by a guard plate support 6. A front view and a side view of the guard plate support 6 are shown in FIG. A through hole 7 is provided in the center of the guard plate support 6, and a regulation pin 9 is disposed from the outer side surface toward the through hole 7 and protrudes into the through hole 7. The restricting pin 9 is fixed to the guard plate support body 6 by a pin fixing screw 10. A guard plate fixing hole 11 is provided on the side surface of the guard plate holding groove 8, and although not shown, the guard plate is pressed and fixed with a screw through this hole.

  Now, when using the protective guard of the present embodiment, first, the support column 1 is fixed vertically to a desired position on the side surface of the press machine with a mounting bracket or the like. Next, the through hole 7 of the guard plate support 6 is inserted into the support column 1. Since the regulation pin 9 protrudes into the through hole 7, the position of this pin is fitted to the position of the guide groove 2 of the support column. As a result, the guard plate 5 can move up and down while the horizontal rotation is restricted. Further, the guard plate 5 is rotated rightward at the desired position of the auxiliary groove 3, and the restriction pin 9 is guided into the auxiliary groove 3. When the hand is released at the front end position of the auxiliary groove, the guard plate tries to drop due to its own weight, and the rotation of the guard plate 5 is restricted and fixed at that position by the restriction pin 9 fitting into the locking recess 4. .

  When it is desired to change the position of the guard plate 5, the guard plate 5 is once lifted upward to release the restricting pin 9 from the locking recess 4, and the auxiliary groove 3 is guided and guided to the guide groove. Thereafter, the position of the guard plate 5 in the vertical direction can be easily changed by repeating the procedure of [0018].

  When necessary, the guard plate 5 can be provided with a notch or a through-hole to accommodate the material supply / unloading device and the air blower.

  In the above embodiment, a groove is formed in the support column and a protrusion is provided in the through hole of the guard plate support portion 6 to be fitted. On the contrary, a plurality of engagements are made on the support column in a straight line along the axis. A similar effect can be obtained by forming a protrusion, forming a notch in a part of the guard plate support, and forming a locking recess on the lower surface of another location.

  The preferred embodiments of the present invention have been described above, but it goes without saying that many modifications can be made without departing from the spirit of the present invention.

  In the guard according to the present invention, the guard plate is fixed by fitting and locking the guard plate and the support column, so that the operator can be prevented from inserting a hand into the machine and the fitting lock is released. This makes it easy to move the position of the guard plate up and down, and makes it extremely easy to deal with the guard plate when trying to change the position of the material feeding / unloading device and the air blower by exchanging dies. In addition, since the structure is simple, the manufacturing cost is low, and it is possible to provide an inexpensive and reliable safety device, which can contribute to improving the safety of machine work.

It is explanatory drawing of one Example of the guard according to this invention. It is sectional drawing of the support | pillar along the A-A 'line of FIG. It is the front view and side view of the guard board support part 6. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Guide groove 3 Auxiliary groove 4 Locking recessed part 5 Guard plate 6 Guard plate support part 7 Post insertion hole 8 Guard plate holding groove 9 Restriction pin 10 Pin fixing screw 11 Guard plate fixing hole

Claims (7)

It consists of a support plate and a guard plate in which at least one guard plate support part is connected to one side, and by fitting and locking a recess or protrusion provided in the support column and a protrusion or recess provided in the guard plate support part A protective guard configured to prevent rotation of the guard plate in the circumferential direction of a circle centered on the axis of the support column. The guard plate support portion can be rotated with respect to the column in such a manner that it is not detached in a direction perpendicular to the axis of the column in the position released from the fitting engagement with the recess or projection of the column. The protective guard according to claim 1, wherein the protective guard is disposed on the surface. 3. The protective guard according to claim 1, wherein the guard plate support portion is configured to be fitted and locked with a concave portion or a protrusion provided on the support column by its own weight. The protective guard according to any one of claims 1 to 3, wherein the support column has a cylindrical shape. A recess provided in the support column is connected to a guide groove along the axis on the surface of the support column, a plurality of auxiliary grooves connected to the groove and extending vertically from the groove, and a tip portion of each of the auxiliary grooves. The protective guard according to claim 1, further comprising a locking recess formed in the column axial direction. The guard plate support portion is formed in an annular shape, and a locking projection is formed on a part of the inner surface, and the locking projection is slidable in the guide groove and auxiliary groove of the column. The protective guard according to any one of claims 1 to 5, wherein the plate is regulated. The protective guard according to any one of claims 1 to 6, wherein the support column is arranged vertically, and the locking recess is connected downward with respect to each auxiliary groove.

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