JPH05116037A - Device for starting with sensor - Google Patents

Abstract

PURPOSE:To increase worker's safety and workability by constituting a work installation device so that, when a work detaching and attaching work is carried out, a transmitting signal from a transmitter stops a moving table while it is shielded and, when the work is completed and the transmitting signal is received by a receiver, it starts the moving table. CONSTITUTION:When a clamp work of a work 20 is being executed and a light emitted from a light emitting side 53 of a photoelectric switch 51i shielded manually, a moving table 10 is kept stopped. When the work is completed and a clamp device 22 on the moving table 10 work area is released and moved back from manual power, a light on the light emitting side 53 of the photoelectric switch 51 is received by a light receiving side 55, a comparation and a calculation are made in a control device with this signal and, if start conditions are met, the moving table 10 is started. Also, even if the moving table is started, when it is within a time set by a timer, etc., and the photoelectric switch is shielded after starting, the moving table 10 can be returned back to the home position to remove obstacles with the signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a starting device using a sensor, and more particularly, to a worker's side near a work mounting device provided on a moving table, a detection switch having a transmitter and a receiver arranged to face each other. During the work of attaching / detaching the work to / from the mounting device by passing between the two, the transmission signal from the transmission unit is shielded and the moving table is stopped, and when the work is completed, the operator's hand is separated from the moving table. The present invention relates to a starting device using a sensor that starts a mobile table when an outgoing signal passes through.

[0002]

2. Description of the Related Art Conventionally, when a worker performs work in a dangerous area such as a movable device, the device suddenly starts during work and causes a human disaster, or the condition of the device remains incomplete. In order to avoid accidents that may start up and damage the equipment, such equipment should be installed on the operator side near the equipment.
By providing an operation unit consisting of individual push button switches and activating the device by turning them on simultaneously with both hands, after the work is completed and the worker's hands are completely separated from the work area, 2. Description of the Related Art There is known a detection device that activates the device to ensure worker safety.

[0003]

However, in such a detecting device, when a work or the like is attached / detached to / from a mounting device provided in the device and the attachment / detachment work is completed, two switches of the operation section are simultaneously turned on by both hands. Only then will the device start up.

Therefore, in such a detecting device, it takes a long time from the completion of the work to the turning on of the switch, and this is required in every continuous work, so that the burden on the worker is large and the cycle is long. It had the difficulty of increasing the time.

Therefore, an object of the present invention is to provide a detection switch, in which a transmitter and a receiver are arranged opposite to each other, on a worker side near a work mounting device provided on a moving table, so that the worker attaches a work to the mounting device. The moving table is stopped by the shielding signal from this detection switch during the attachment / detachment work, and when the work is completed and the operator's hand is separated from the moving table, the moving table is activated by the detection signal. By doing
It is an object of the present invention to provide a starting device with a sensor that can improve worker safety and shorten the cycle time.

[0006]

In order to achieve the above-mentioned object, a starting device using a sensor according to the present invention is an operator when performing work in a predetermined work area on a movable table that reciprocates within a predetermined range. In a starting device with a sensor that uses a signal detected by a sensor as a starting condition for the moving base, a work mounting device that is mounted on the moving base to mount and remove a work, and a worker side near this work mounting device The transmitter and receiver are arranged opposite to each other and consist of a detection switch that detects intrusion from the outside when passing between the two, and a control device that activates or deactivates the mobile stand according to the signal transmitted from this detection switch. During the work of attaching / detaching the work to / from the work mounting device, the movable table is stopped while the transmission signal from the transmission unit is shielded, and the transmission signal is received by the reception unit when the work is completed. It is characterized in that it is configured to activate the mobile table when it is hit.

In this case, if the detection switch is composed of a photoelectric switch and is configured to return the mobile table to the original position when the transmission signal from the switch is blocked within a set time immediately after the mobile station is started up. It is suitable.

[0008]

According to the sensor starter of the present invention,
A detection switch, in which a transmitter and a receiver are arranged to face each other, is provided on the worker side near the work mounting device provided on the movable table,
During the work of attaching / detaching the work to / from the mounting device by the worker, the moving platform is stopped by the shielding signal from this detection switch, and when the work is completed and the worker's hand is separated from the moving platform, the moving platform is triggered by the signal. By activating so that the worker's safety and workability are improved, the cycle time of the device can be shortened.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a sensor starting device according to the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is an overall perspective view showing a usage state in which a starting device using a sensor of the present invention is applied to a moving table, FIG. 2 is a view taken in the direction of arrow A showing a partial cross section of FIG. 1, and FIG. 3 is a plan view of FIG. Is.
In the figure, reference numeral 10 indicates a movable table, and in the present embodiment, the movable table 10 is configured to be movable back and forth in a predetermined section. That is, the movable table 10 is guided by a drive source (pneumatic cylinder) 15 described later so as to be movable back and forth on three rails 14 arranged in parallel on a base 12 at a predetermined interval via linear motion bearings. It is composed of a supported table 16 and an inclined block 18 fixed on the table 16 and having an upper surface inclined at a predetermined angle. On the inclined surface of the inclined block 18, a work clamp device 22 for mounting a work 20 is provided. There is.

In this case, the work 20 attached to the clamp device 22 has an inclined shaft 2 inclined by a predetermined angle on the upper surface of a plate-like substrate 24 formed in a different shape as shown in FIG.
6 have been planted. Workpiece 20 configured in this way
When is attached to the upper surface of the tilt block 18, the tilt angle of the tilt block 18 is determined so that the tilt axis 26 of the work 20 is vertical.

The clamp device 22 provided on the inclined block 18 is constructed as follows. That is, as shown in FIGS. 2 and 3, the clamp device 22 has a movable plate 40 that mounts and discharges the work 20 only by reciprocating motion on the upper plane of the guide base 34, which is composed of a plurality of blocks having the guide grooves 32. Is the actuator 42
It is slidably supported by (for example, a pneumatic cylinder) so as to advance and retreat in parallel with the guide groove 32.

Further, as shown in FIG. 3, the moving plate 40 is formed with a notched concave portion 44 capable of accommodating the work 20 on the tip side surface, and the two faces of the notched concave portion 44 which are orthogonal to the moving axis of the moving plate 40 and which oppose each other. One surface (actuator side) of the work 2 is moved by the forward movement of the actuator 42.
A clamp portion having a protrusion 46 for pressing the side surface of the substrate 24 of 0 is formed, and a side surface opposite to the clamp portion is locked by the retracting operation of the actuator 42 with the side surface of the substrate 24 of the work 20 when the pressing is released. The portion 48 is formed. Further, on the inclined surface of the inclined block 18 in the vicinity of the contact block 36, an actuator 50 is mounted perpendicularly to this surface via a stand 52.
The pressing element 54, which is vertically movable by 0, is pressed against the upper surface of the work substrate 24 (see FIG. 2).

When the work 20 is fixed by the clamp device 22, the inclined pin of the work 20 can be accurately positioned at a predetermined position so as to be vertical.

Here, when the moving table 10 at the origin position is moved by the air cylinder 15, the work 20 on the tilt block 18 moves to a measuring position (not shown) and is accurately positioned. Workpiece 20 positioned at the measurement position
The tilt axis 28 is measured by a measuring device at two points above and below the outer circumference (two points at different angles of 90 ° in the same plane), and the measured values are calculated in the control device to determine the angle of the tilt axis. Then, the position is determined, and this is compared with a reference value to determine the quality of the work.

Next, the work discharge device for discharging the work whose measurement has been completed is constructed as follows. That is, FIG.
As shown in FIG. 3, one of the pair of blocks 34a and 34b forming the guide groove is provided by the actuator 33 so as to be able to move forward and backward in a direction orthogonal to the guide groove 32. A through discharge hole 38 is formed in the inclined block 18 for discharging the work 20 that has moved backward to the outside of the guide groove 32 when the guide groove 32 spreads apart from the opposing block 34a.

Work is attached to the clamp device 22 provided on the above-mentioned moving table 10 manually 23. To start the moving table 10, the work 20 is securely clamped. At the same time manpower 23
Is required to be completely evacuated from the work area. And in order to check the state of this manual work,
A photoelectric switch (photosensor) is arranged on the worker side base 12 in the vicinity of the moving table 10 as a starting device using a sensor which is an essential part of the present invention.

The photoelectric switch 51 is composed of a light emitting section 53 which serves as a transmitting section and a light receiving section 55 which serves as a receiving section.
The light receiving section 55 is provided with stands 56a, 56 standing upright via support blocks 58a, 58b fixed on the base.
It is supported by b so that it can be adjusted up and down.

The starting device with the sensor constructed as described above operates as follows. That is, as shown in FIG. 1 and FIG. 2, the work is clamped manually by the clamp device 22 in the open state with the movable table at the origin position.

When the work 20 is being clamped and the light emitted from the light projecting side 53 of the photoelectric switch 51 is blocked manually, the movable table 10 is kept in a stopped state and all the work is performed. When the human hand 23 is separated from the clamp device 22 in the work area on the movable table 10 and retracted, the light from the light-projecting side 53 of the photoelectric switch 51 is received by the light-receiving side 55, and this signal is used for comparison calculation by a controller (not shown). When the starting condition is satisfied, the mobile table 10 is started. Further, even if the mobile stand is activated, if the photoelectric switch is shielded after the start up within the set time set by the timer or the like, the mobile stand 10 is returned to the origin position by the signal and the obstacle is removed. be able to. As a result, the safety of the operator can be improved and the cycle time can be shortened.

[0020]

As is apparent from the above-described embodiments, according to the sensor starter of the present invention, the work mounting device for mounting and removing the work, which is provided on the movable table, and the work in the vicinity of the work mounting device. A detection switch for detecting an intrusion from the outside when a transmitter and a receiver are arranged on the person side so as to face each other, and a control device for starting or stopping the mobile stand according to a signal transmitted from the detection switch. When the work for attaching / detaching the work to / from the work mounting device is stopped while the transmission signal from the transmission unit is being shielded, the movable table is stopped, and the work is completed and the transmission signal is received by the reception unit. In this case, by activating the mobile stand, the safety and workability of the operator are improved, and two switches provided on the operation unit as in the past are simultaneously turned on with both hands.
There is an excellent effect such that the cycle time of the apparatus is shortened by eliminating the operation of causing N. Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and it is needless to say that various design changes can be made without departing from the spirit of the present invention.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment according to the present invention and showing a usage state in which a starting device using a sensor is applied to a movable table.

FIG. 2 is a view showing a partial cross section of FIG.

FIG. 3 is a view on arrow B of FIG.

FIG. 4 is a plan view showing a state in which a sensor of the present invention is arranged near a movable table.

[Explanation of symbols]

10 Mobile Stand 12 Base 14 Rail 15 Pneumatic Cylinder 16 Table 18 Tilt Block 20 Work 22 Clamping Device 24 Board 26 Tilt Shaft 32 Guide Groove 33, 42, 50
Actuator 34 Guide base 34a Block 34b Moving block 36 Abutment block 38 Through discharge hole 40 Moving plate 44 Notch recess 46 Protrusion 48 Locking part 51 Photoelectric switch 52 Stand 53 Light emitting part 54 Presser 55 Light receiving part

Claims (2)

[Claims] 1. A starting device using a sensor, which uses a signal detected by a sensor as part of an operator when performing work in a predetermined work area on a moving table that reciprocates within a predetermined range as a starting condition for the moving table. In the above, a work mounting device provided on the moving table for mounting and dismounting a work, and a transmitter and a receiver are arranged to face each other on the side of the worker near the work mounting device, and when the work is passed between the two, A detection switch for detecting an intrusion, and a control device for starting or stopping the moving table according to a signal transmitted from the detection switch, and a transmission signal from the transmission unit when the work is attached to or detached from the work mounting device. Is configured to stop the mobile base during the shielding, and to activate the mobile base when the work is completed and the transmission signal is received by the receiving unit. Place 2. The detection switch is composed of a photoelectric switch, and is configured to return the movable table to the original position when the transmission signal from the switch is shielded within a set time immediately after starting the movable table. An activation device using the sensor according to claim 1.