JP2005254366A - Safety device of extraction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety device for protecting a worker from the operation of an extraction machine for extracting a workpiece from a machine tool in simple constitution. <P>SOLUTION: An invasion shielding member 5 is fitted to both ends to sandwich the operating range of the extraction machine 2 mounted on a forming machine (a machine tool) 1 for extracting a workpiece as an formed article from the forming machine 1. The invasion shielding members 5 are freely attached and detached to and from the forming machine 1 by magnets or bolts, whereby the fitting position can be simply changed, and fitting can be simplified. Even in the course of operation before regular production of the forming machine 1, the invasion shielding members 5 can be simply fitted to secure the safety of a worker. The invasion shielding members 5 are manually or automatically input to the fitting machine 2, and the operating range of the fitting machine 2 is limited to an input range to secure the safety of the worker. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a safety device for a take-out machine that takes out a workpiece such as a workpiece or a molded product from a processing machine such as a machine tool or a molding machine, and further performs an attaching operation.

  In a machine tool, a take-out machine is used for attaching a workpiece, which is a workpiece, to the machine, and for taking out a processed workpiece from the machine. Further, in a molding machine such as an injection molding machine, a take-out machine is provided to take out a molded product from the mold. These take-out machines include a type arranged adjacent to a processing machine such as an injection molding machine or a machine tool, and a type mounted on a processing machine.

  This unloader is equipped with an unloader arm inside a processing machine, grips and unloads a workpiece such as a workpiece or a molded product, and transports it to a predetermined position. In order to transport the workpiece from a predetermined position and mount it on the machine, an arm is placed inside the machine and the workpiece is attached to the machine. The operation of the unloader drives an unloading mechanism such as an arm, and the movement movement range of the arm of the unloading mechanism extends over a wide range centering on the unloader. For this reason, a safety fence is usually installed to prevent an operator from accidentally entering the operating range of the unloader.

  FIG. 6 is an example in which a safety fence is provided for the unloader mounted on the molding machine. On the upper part of the molding machine 1, a take-out machine 2 for taking out the molded product from the mold opened is mounted. A gripping mechanism such as a hand for gripping a molded product is attached to the tip of the arm of the unloader, and the arm is driven to move the gripping mechanism in the three-dimensional directions up and down, left and right, and front and back to make any molding. From the product take-out position, the molded product is taken out and transported to a desired product collection position. The example shown in FIG. 6 has shown the example provided with the hand 27 which takes out the molded article 3, and the hand 28 which takes out a runner. A base 20 of the take-out machine 2 is attached to the upper part of the molding machine 1, and a guide member that guides an arm 22 that linearly moves in the vertical direction (Y-axis direction) with respect to the longitudinal direction (X-axis direction) of the molding machine. 21 is provided. Further, the arm 22 is provided with a lift arm mechanism 23 for taking out a molded product and a lift arm mechanism 24 for taking out a runner, which move in the longitudinal X-axis direction of the molding machine. The elevating arm mechanisms 23 and 24 themselves include arms 25 and 26 that extend and contract in the vertical direction (Z-axis direction orthogonal to the X- and Y-axis directions), respectively, and hands 27 and 28 are attached to the tips thereof. In FIG. 6, reference numeral 3 indicates a molded product held by the hand 27.

  Since the arm 22 moves in the Y-axis direction, the lifting arm mechanisms 23 and 24 move in the X-axis direction, and the arms 25 and 26 of the lifting arm mechanisms 23 and 24 move in the Z-axis direction, the hands 27 and 28 Moves in the three-dimensional movement space of the movement area of each arm. Since it is dangerous if an operator enters the moving space, a safety fence 4 is provided so as to sandwich the operation area of the take-out mechanism as shown in FIG.

As described above, a safety fence is provided for an operating area in which the takeout mechanism of the takeout machine operates, thereby ensuring the safety of workers. However, the shape and location of this safety fence is not uniformly determined in relation to the location where the processing machine such as a molding machine or machine tool is installed or the peripheral equipment. Installed. In addition, unlike processing machines and peripheral equipment, safety fences do not contribute directly to production, so during the temporary operation period from the installation of processing machines to the start of production, the processing machines and unloaders must be installed with insufficient safety fences. There was a problem in terms of safety as it was sometimes operated.
Accordingly, an object of the present invention is to provide a safety device that protects an operator from the operation of the unloader with a simple configuration.

Each invention of the present application is a safety device that prevents an operator from entering the operation area of a take-out machine that is mounted on or adjacent to a processing machine and takes out a workpiece after processing. The invention according to claim 1 One end of each of the intrusion blocking members is detachably attached to the side surface of the processing machine so that two rod-shaped or plate-shaped intrusion blocking members are arranged at positions sandwiching the operation area of the take-out device. It is what. The invention according to claim 2 further allows the intrusion blocking member to be housed in the processing machine.
The invention according to claim 3 is a coordinate scale for enabling an operator to change the mounting position of the intrusion blocking member on the side surface of the processing machine and for reading the mounting position of the intrusion blocking member on the side surface of the processing machine. The unloader has a means for setting the coordinate position of the two intrusion blocking member mounting positions, and the unloader mechanism section does not move outside the operation area sandwiched between the two set mounting positions. And means for limiting.

  The invention according to claim 4 makes it possible to change the mounting position of the intrusion blocking member on the side surface of the processing machine, and further provides mounting position detecting means on the intrusion blocking member or the intrusion blocking member mounting portion of the processing machine, The take-out machine includes means for receiving and storing the position detected by the position detection means, and means for restricting the take-out mechanism mechanism from moving outside the operation area sandwiched between the two detected attachment positions. It was supposed to be. According to a fifth aspect of the present invention, when the intrusion blocking member is further provided with passage detection means for detecting passage of an operator or the like, and the passage detection means detects passage when the unloader is in an operable state. Means for emergency stop of the unloader.

  In the present invention, since the intrusion shielding member can be easily attached and the structure of the intrusion shielding member is also simple, the unloader and the processing machine can be easily attached even before the actual production operation, Worker safety can be ensured.

FIG. 1 is a perspective view showing a use state of the first embodiment of the present invention.
The embodiment shown in FIG. 1 also shows an example in which the take-out machine 2 is mounted on the upper part of the molding machine 1 as in the conventional example shown in FIG. Since the configuration and operation of the unloader 2 are the same as those described in the conventional example of FIG. In this embodiment, instead of the safety fence 4 shown in FIG. 6, the rod-shaped or plate-shaped intrusion shielding member 5 is attached to the molding machine 1 on both right and left sides so as to sandwich the operation area of the take-out mechanism part of the take-out machine 2. It is attached and arranged.

  The intrusion shielding member 5 can be attached to and detached from the molding machine 1. As shown in FIG. 2 (a), a mounting plate is provided at the base of the rod-like or plate-like member, and the plate is constituted by a magnet 5a to be a removable intrusion shielding member 5. The magnet 5a is attached to the casing or cover of the molding machine 1 for attachment. Further, as shown in FIG. 2 (b), a bolt-fixing plate 5b is attached to the base of a rod-like member or plate-like member, and the removable intrusion shielding member 5 is attached to the casing or cover of the molding machine 1. Install with bolts.

  Further, in order to allow the intrusion shielding member 5 to be housed in a processing machine or a take-out machine, as shown in FIG. 2 (c), a plurality of pipes whose diameters are changed stepwise are connected to expand and contract. It can be extended when used, and can be stored in the molding machine (processing machine) 1 or in the packaging of the unloader 2 when not used or transported. Similarly, as the retractable intrusion shielding member 5, as shown in FIG. 2 (d), an intrusion shielding member 5 having a joint that can be bent at the base of a bar-like member or a plate-like member connected to the mounting plate. . As described above, since the intrusion shielding member 5 can be transported with a simple configuration, it is arranged together with the processing machine and the unloader, and when the processing machine operates, it can be easily attached even before the start of production. Safety can be achieved. In addition to the configuration of the intrusion shielding member 5 described above, a storage hole is provided in a cover of a processing machine such as a molding machine, the intrusion shielding member is stored in the accommodation hole, and the intrusion shielding member is pulled out. May be.

  As described above, as shown in FIG. 1, the intrusion shielding member 5 is attached to the cover of the molding machine on both the left and right sides of the operation area of the unloader so as not to enter the intrusion shielding member 5 to the operator. Prompt. In the example shown in FIG. 1, for example, a pair of intrusion shielding members 5 are mounted at a height of about the position of the operator's line of sight. You may make it the same as the safety fence shown in FIG. Further, as shown in FIG. 1, a pair of intrusion shielding members 5 may be attached, and a tape or string or the like may be hung on the rod-like member or plate-like member of the intrusion shielding member 5 to clarify the intrusion prohibited area. .

  FIG. 3 is a perspective view of the second embodiment of the present invention. In the second embodiment, a coordinate scale 6 is provided in the longitudinal direction (X-axis direction) of the molding machine on the mounting surface of the intrusion shielding member 5 of the molding machine (processing machine) 1. In FIG. 3, reference numeral 7 denotes a control device for the unloader 2, which is connected to the unloader 2 by a cable 9. An operation panel 8 is connected to the control device 7. By attaching the removable intrusion shielding member 5 to the molding machine 1, reading the position where the intrusion shielding member 5 is attached from the coordinate scale 6, and inputting the coordinate value read on the unloader operation area setting screen of the operation panel 8. The operating range of the unloader 2 is limited. The unloader 2 has a known function for limiting the strokes in the X, Y, and Z axis directions orthogonal to each other by software, and the coordinate value of the installation position of the intrusion shielding member 5 (in the example of this embodiment, the X axis When the coordinate value of the direction is input, the operation stroke is limited so as not to exceed this coordinate value. Thus, in the second embodiment, in the case where the installation position of the intrusion shielding member 5 is restricted, conversely, the operation of the unloader is restricted according to the attachment position of the intrusion shielding member 5 to ensure safety. Is intended.

  In the second embodiment, the operator reads the installation position of the intrusion shielding member 5 from the coordinate scale, and manually inputs the coordinate value to the control device 7 of the take-out machine. May be automatically read and input. For example, when mounting holes with a constant interval are provided in a molding machine (processing machine), a switch is provided at the position of each mounting hole, and the intrusion shielding member 5 is attached, an output signal from the switch at the position of the attached hole is output. It may be configured to input to the control device 7 of the unloader 2 so that the mounting position of the intrusion shielding member 5 is automatically detected.

  FIG. 4 is a perspective view of a third embodiment of the present invention. In the fourth embodiment, the position of one intrusion shielding member 5 may be manually input to the control device of the unloader as in the second embodiment described above, or automatically detected by a sensor or the like. To the control unit. The position of the other intrusion shielding member 5 is the distance sensor 10 that measures and inputs the distance between the intrusion shielding members 5. In this case, the distance sensor 10 is incorporated in the intrusion shielding member 5, the distance sensor and the control device of the take-out machine 2 are connected, and the distance measured by the distance sensor 10 is automatically input to the control device and the take-out machine Try to limit the operating area. Alternatively, when the intrusion shielding member 5 is attached to the molding machine (processing machine) 1 without mounting the distance sensor 10 on the intrusion shielding member 5, the distance between the pair of intrusion shielding members 5 is manually measured by the distance sensor 10. May be input to the control device 7 of the unloader 2.

  FIG. 5 is a perspective view of a fourth embodiment of the present invention. In the fourth embodiment, the intrusion shielding member has a passage detection function in addition to the above-described function. In the fourth embodiment, an intrusion shielding member, for example, a first member 11 having a plurality of light emitting elements and a second member 12 having a light receiving element facing each light emitting element are formed by a molding machine (processing machine). An intrusion shielding member composed of a combination of the first member 11 and the second member 12 is arranged at both ends of the operation area of the take-out machine, and an emergency stop circuit for the light receiving element and the take-out machine control device. And when the unloader 2 is in an operable state (when the power is turned on), and when an operator enters between the first member 11 and the second member 12, the light emitting element and the light receiving element When the interval is interrupted, the emergency stop circuit is activated to stop the operation of the unloader, thereby ensuring the safety of the operator. In addition, a reflection mirror or the like may be provided on the second member 12 instead of the light receiving element, and a light-emitting element and a light receiving element may be provided on the first member 11 to provide an intrusion shielding member having a passage detection function.

  In each of the above-described embodiments, an example has been shown in which the unloader 2 is attached to the molding machine 1 and a molded product (workpiece) is taken out. However, a machined workpiece (workpiece) is taken out from a machine tool, or unprocessed The safety device of the present invention can be applied even when an attachment machine for attaching the workpiece (workpiece) to the machine tool is attached to the machine tool. Moreover, although the example which attached the attachment machine to the upper part of the processing machine (molding machine) was shown, this invention is applicable also when arrange | positioning an attachment machine adjacent to a processing machine.

It is a perspective view which shows the use condition of the 1st Embodiment of this invention. It is a figure which shows the various aspects of the intrusion shielding member in the embodiment. It is a perspective view of the 2nd Embodiment of this invention. It is a perspective view of the 3rd Embodiment of this invention. It is a perspective view of the 4th Embodiment of this invention. It is an example of the prior art which provided the safety fence with respect to the take-out machine mounted in the molding machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Molding machine 2 Unloader 3 Molded article 4 Safety fence 5 Intrusion shielding member 6 Coordinate scale 7 Control device of unloader 8 Operation panel 9 Cable 10 Distance sensor 11 First member 12 Second member

Claims (5)

A safety device that prevents an operator from entering the operation area of a take-out machine that is mounted on or adjacent to a processing machine and takes out a workpiece after processing,
That one end of each intrusion blocking member is detachably attached to the side surface of the processing machine so that two intrusion blocking members in a rod shape or a plate shape are disposed at positions sandwiching the operation area of the take-out device. A safety device for unloaders.   The safety device for an unloader according to claim 1, wherein the intrusion blocking member can be stored in the processing machine. The mounting position of the intrusion blocking member on the side surface of the processing machine can be changed, and a coordinate scale for an operator to read the mounting position of the intrusion blocking member on the side surface of the processing machine is provided.
The unloader has a means for setting the coordinate position of the two intrusion blocking member mounting positions, and a means for restricting the unloader mechanism from moving outside the operation area sandwiched between the two set mounting positions. The safety device of the unloader according to claim 1 or 2, comprising: The mounting position of the intrusion blocking member on the side surface of the processing machine can be changed, and an installation position detecting means is provided in the intrusion blocking member or the intrusion blocking member mounting portion of the processing machine,
The unloader includes means for receiving and storing the position detected by the position detection means, and means for restricting the unloader mechanism from moving outside the operation region sandwiched between the two detected attachment positions. The safety device of the unloader according to claim 1 or 2, further comprising: A means for detecting passage of an operator or the like is provided on the intrusion blocking member, and means for emergency stop of the unloader when the unloader detects the passage when the unloader is in an operable state. The unloader safety device according to any one of claims 1 to 4, which is provided.

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