JP2523617Y2 - Sensor mounting device on transfer conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a transfer conveyor for transferring a pallet on which a work is placed to a predetermined work position. The present invention relates to a sensor mounting device for checking whether or not the work is located each time the work is performed.

[Prior Art] Conventionally, sensors such as a photoelectric switch and a proximity switch are arranged at a work position in order to check whether or not a work on a pallet transferred on a transfer conveyor has reached a predetermined position. It is configured to check whether the work has reached that position. For example, as shown in FIG. 6, a sensor mounting base 131 is fixed to a column 130 fixed along the side surface of the transfer conveyor 1, and a sensor 12 is mounted thereon.
0 is installed. The sensor 120 is covered by a cover 132 and is protected from being damaged.

[Problems to be Solved by the Invention] However, the sensors used in such a transfer conveyor line and the device for mounting the same protrude outward from the conveyor line, and the lead wires from this sensor are further separated from the transfer conveyor. As a result, a worker or an object was caught on the lead wire, and the worker was injured or the device was broken. In addition, such an apparatus has a relatively large number of parts, and since these parts are mainly produced by cutting, the cost is high. In addition, in a single transfer conveyor, such devices must be arranged at least at each work position at a work station, and a relatively large amount is required, but this method is not suitable for mass production. Has occurred.

The present invention has been devised to solve such problems and to provide a relatively simple and compact device.

[Means for Solving the Problems] In order to achieve this object, the present invention provides a transfer conveyor 1 for transferring a pallet 2 on which a work 4 is placed to a predetermined work position. Attachment 25 which is movable along the conveyor 10 and can be fixed at a desired position is attached to the frame 10 of the conveyor 1, and a guide hole for introducing a lead wire 24 from a sensor to the attachment 25.
A hollow cylindrical hollow column 30 having a window portion 31 on which a detection portion 23 is fixed at the upper portion is formed so as to be freely adjustable in height, and the sensor is fitted into the window portion 31 and fixed. The shielding wall 32 is integrally formed on both sides of the window 31.

[Operation] When the pallet 2 on which the work 4 is placed is transferred on the transfer conveyor 1, a hollow support provided in advance is installed.
It is confirmed by the sensor attached to 30 that the work 4 has reached the predetermined work position. Thus, work is performed at the work station. At this time, the sensor lead wire
Since 24 is introduced into the hollow column 30, it does not get caught by the operator or the work 4 for some reason, and a highly reliable operation can be obtained.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. 1, 2 and 4, reference numeral 10 denotes a pair of left and right frames constituting the transfer conveyor 1. Inside the frame 10, transfer chains 11, 11 are arranged in parallel. The transfer chains 11 and 11 are constantly driven to circulate synchronously along the frames 10 and 10 so that the pallets 2 are integrally moved to a predetermined work position by the transfer chains 11 and 11. The frames 10, 10 are fixed to the lower transfer table 3, respectively.

Further, a pair of photoelectric switches 20 including a light emitting side 21 and a light receiving side 22 are arranged at predetermined positions in the work station on the outside of the frames 10 and 10, respectively, as shown in FIG. A photoelectric switch 20 as a sensor is a hollow support 30 fixed to a mounting fixture 25 movable along the frames 10, 10 in the moving direction of the transfer chains 11, 11 so as to be adjustable in height.
Is fixed so that the detection unit 23 is exposed in the window portion 31 formed at the bottom. Shielding walls 32 are formed on both sides of this window portion 31,
The shielding wall 32 is integrated with the window 31 in which the photoelectric switch 20 is fixed. In addition, a guide hole 33 for introducing and guiding the lead wire 24 from the photoelectric switch 20 is formed in the hollow column 30.

Next, the operation of this will be described. A pair of photoelectric switches 20 on the light emitting side 21 and the light receiving side 22 as sensors are respectively placed in the window 31 of the hollow column 30 and the detecting unit 23 is located in the window 31 of the hollow column 30. Then, the hollow support 30 is mounted on the mounting fixture 25 which has been previously movably mounted on the frames 10, 10 on both sides with its height adjusted. Subsequently, the fixture 25 is moved along the frames 10, 10 in accordance with the work position of the work station, and adjusted and fixed. In this way, sensors are attached to a plurality of work stations on the transfer conveyor line shown in FIG. 5, respectively.

Thereafter, when the transfer chains 11, 11 are driven synchronously, the transfer chains 11, 11 circulate and move along the frames 10, 10, and the pallet 2 on which the work 4 is placed is moved to a predetermined position. And move together. And
When it is confirmed by the photoelectric switch 20 at the work position whether or not the work 4 is located at the work position, the pallet 2 is stopped at a predetermined position by a pallet stop unit (not shown). Thereafter, when the work unit 5 completes the predetermined work, the pallet 2 moves forward again.

In this embodiment, a pair of photoelectric switches 20 is used as a sensor, but the present invention is not limited to this.
For example, it may be a proximity switch or a reflection type photoelectric switch.

[Effects of the Invention] As is apparent from the above-described embodiment, the present invention provides a mounting fixture 25 that is movable along the frame 10 of the transfer conveyor 1.
A window 31 for mounting the sensor is formed on the upper part of the fixture 25 and a lead wire 24 from the sensor is fixed.
The hollow support column 30 with the guide hole 33 for introducing the sensor is mounted so as to be adjustable in height, and the shielding walls 32 are integrally formed on both sides of the window portion 31, so that the sensor lead wires go out. The lead wire can be inserted into the guide hole of the hollow support without injury, and there is no risk of injury or failure due to the operator hooking the object or the object. Is covered to prevent damage.
Further, since the sensors are arranged for each of the work positions at the plurality of work stations, the height and the position can be easily adjusted in each case, and the mounting device can be standardized. In addition, since the number of parts is not large as in the conventional case, the cost can be reduced, and the sensor can be manufactured in large quantities and at low cost. In addition, the time required for mounting and adjusting the sensor is shortened, and the man-hour required for the assembling operation is reduced. effective.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional front view of an essential part showing an embodiment of the present invention, FIG. 2 is a side view excluding a frame of FIG. 1, and FIG. 3 is a second view showing a combination state of a hollow support and a sensor. Figure top view,
FIG. 4 is a sectional view of a main part of the transfer conveyor, FIG. 5 is an overall view of the transfer conveyor line, and FIG. 6 is a sectional front view of a conventional example of the present invention. 1 is a transfer conveyor, 2 is a pallet, 3 is a transfer table, 4 is a work, 5 is a work unit, 10 is a frame, 11 is a transfer chain, 20 is a photoelectric switch, 21 is a light emitting side, 22 is a light receiving side, 23
Is a detection part, 24 is a lead wire, 25 is a fixture, 30 is a hollow support, 31 is a window, 32 is a shielding wall, 33 is a guide hole,

Claims (1)

(57) [Scope of request for utility model registration] 1. A transfer conveyor (1) for transferring a pallet (2) on which a work (4) is mounted to a predetermined working position, wherein the frame of the transfer conveyor (1) arranged on both sides of the pallet (2). At 10), a fixture (25) which can be moved along and fixed at a desired position is attached, and a guide hole (33) for introducing the lead wire (24) from the sensor into the fixture (25). A hollow cylindrical pillar (30) formed and having a window (31) on which at least a sensor detecting part (23) is fixed is mounted on the upper part so as to be freely adjustable in height, and the window (31) is mounted on the window (31). A sensor mounting device, wherein a sensor is fitted and fixed, and shielding walls (32) are integrally formed on both sides of the window (31).