JPS62120270A - Method and device for stopping and positioning moving truck - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of Application of the Invention] The present invention relates to a method and apparatus for stopping and positioning a movable trolley, particularly an S-moving trolley having a transfer device that requires accurate positioning.

[Conventional technology]

In general, there are many cases where a traveling mobile platform is required to stop accurately at a predetermined position to carry out transfer work.

Conventionally, such a stop positioning method uses a complicated control and position 1α detection device that uses a computer and a pulse motor, such as the one disclosed in Japanese Patent Laid-Open No. 60-118375, or a special Kaisho 57-771
There is a method of positioning by making it come into contact with a shock absorber as shown in Fig. 13, but in the past there has also been a method of fitting a tapered part.

[Problem that the invention attempts to solve]

As described above, the conventional stop positioning method requires complicated control, resulting in an expensive device, and it is difficult to correct the position when the stop position is significantly deviated.

The present invention eliminates these drawbacks and provides an inexpensive and practical method and device for stopping and positioning a movable dolly, which can stop the movable dolly with a small braking force, and allows easy correction of the stop position.

[Means for solving problems]

In the present invention, the movable dolly is run at a predetermined speed, the drive is released before a predetermined stop positioning position, the movable dolly is coasted, and the movable dolly stops running after a predetermined time has elapsed since the drive is released. To provide a method and an equipment therefor, characterized in that accurate positioning is performed by clutching a dog provided on a floor surface using a clamp mechanism provided on a frictionally movable cart such as a wheel.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The method and apparatus for determining the stop position of a movable cart according to the present invention will be explained in detail below based on examples of drawings.

Refer to Figure 1, move a ton 1! 1j An air cylinder IVi for driving wheel 2 is fixed to the bottom of the moving table-east,
At the tip of the shoe 1 of the air cylinder 7, the rack 4a and the rack 4a mesh with the pinion 4b to drive the wheel b3.

The rib switch 9 is fixed to the side surface of the movable cart 1, and detects the position of a position detecting metal fitting 12 added at a predetermined position in FIG.

The clutch mechanism 5 is located at the bottom of the moving trolley!・ζ...f An air cylinder 8, which is provided at the center and drives the crank 7'', is also fixed to the bottom of the moving carriage.

The dog 6 is fixed at a predetermined position on the floor.

FIG. 2 is a sectional view taken along line A-A in FIG.
It is installed at the position where it is connected to the T.

In FIG. 1, the wheels 2 include a rack 4a and a binion 4b.
The air cylinder 7 VC'''C is driven through the air cylinder 7VC'''C.

A limit switch detects a position detection metal fitting provided in front of a predetermined positioning position, and the drive of the wheel is released. The moving trolley runs by coast and is decelerated by frictional resistance. At a predetermined time [41] after the MA movement is released, a braking force is applied to the movable trolley before the traveling of the movable trolley is stopped, and a predetermined time is reached at which the clamping mechanism can clamp the dog on the floor lTi1. Stop the mobile cart within the distance. A timer (not shown) is used to stop the moving platform 'S within a predetermined distance. A known timer can be used. The time from when the NA force is released until the position of the cart reaches within a predetermined distance is determined by setting this timer in advance, and when the time comes, a braking force is applied to the moving cart. In order to make it possible to stop with a small shock when stopping and with as small a braking force as possible, by adjusting the traveling speed at the position of the limit switch, the traveling of the bogie can be stopped near the predetermined stopping position. It is preferable to maintain the state before IK. Next, by clamping the dog on the floor using a clutch mechanism, the movable cart, which is close to the stop position, is moved back and forth to perform accurate positioning.

The means for driving the wheels may be other than the illustrated rack and pinion mechanism, and may be not only an air cylinder but also a known means such as a motor, and the brake may also be a known means, and may be one that applies fα contact to the wheels. good. Further, the sensor may be a known sensor such as a proximity switch, a photoelectric switch, etc. in addition to the limit switch shown in the example. A timer or the like may be used instead of the position sensor.

〔Effect of the invention〕

As described in detail above, the method and device for locating a stop position for a movable trolley according to the present invention has a small shock when stopping, can be stopped with a small braking force, eliminates the need for complicated control for stop positioning, and is easy to use.・Highly accurate stop positioning can be easily performed, and an inexpensive positioning method can be provided.

[Brief explanation of drawings]

FIG. 1 is a force side view showing one embodiment of the stop positioning method for a movable cart according to the present invention, and FIG.
-A- is a sectional view. 1 - Moving trolley 2 - Wheels 3 Axle 4a - Rack 4b Binion 5... Clamp mechanism 6 Dog 7... Air cylinder 8 - Air cylinder 9 Limit switch 10... Clutch/brake 11, jt'... Rail 12 - Position detection Bracket Patent Applicant: Asahi Kasei Kogyo Co., Ltd. Figure 1-(A 91 Figure 2)

Claims (1)

[Claims] 1. The movable trolley is driven and driven at a constant speed, the drive is released at a fixed position before the stop positioning position, the movable trolley is coasted, and the drive is released for a certain period of time. After the elapsed time,
The movable dolly is stopped by applying a braking force before it stops running, and then a clamp mechanism provided on the movable dolly clamps a dog provided on the floor surface to perform accurate positioning. A unique method for determining the stop position of a mobile cart. 2. A device that drives the mobile cart at a constant speed, a device that releases the drive at a certain position before the stop positioning position,
A device that applies a braking force to stop the moving cart after a certain period of time has passed after the drive is released, and allows accurate positioning of the moving cart using a clamp mechanism installed on the moving cart and a dog installed on the floor. A stop positioning device for a mobile cart consisting of a device.