JPH049704B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a conveyance device, and particularly to a conveyance device using a linear motor.

(b) Prior art In recent years, with the automation of processing and assembly in the mechanical industry, linear motors have been used to transport workpieces in place of conveyance means such as belt conveyors due to the demand for improved stopping accuracy at stations. transport equipment is used.

Conventionally, there is a so-called turntable type means for changing the direction of a conveyance vehicle in a conveyance device having reciprocating lanes.

Such a turntable-type transport vehicle direction change requires a large space and is also relatively complex in structure.

However, even in the round-trip lane, for example, after working on the processed product A in lane A, at the end of lane A
There are cases where the processed product is loaded and unloaded at the end of each lane, as in the case where the B processed product is loaded and worked on in the B lane.

As a conveyance device suitable for such a case, the turntable type conveyance device is not suitable.

(C) Purpose The present invention also works on round-trip lanes, for example, after working on the processed product A in the A lane, unloading the A at the end of the A lane, and loading the B processed product on the B lane and working on it. As mentioned above, it is an object of the present invention to provide a conveying device that is suitable for loading and unloading processed products at the end of each lane, has a relatively simple structure, and can be installed in a small footprint. The purpose is

(d) Configuration The present invention is a conveyance device using a linear motor, which is made up of a track, a conveyance vehicle running on the track, and a conveyance vehicle direction conversion unit provided at the end of the track and changing the traveling lane of the conveyance vehicle. , the track consists of two main running rails arranged at a predetermined interval, two auxiliary running rails arranged outside and parallel to the main running rails, and a plurality of auxiliary running rails arranged on the main running rails. The transport vehicle is equipped with a stator of a linear motor, and the carrier includes a drive body having a mover of the linear motor and a plurality of main wheels that roll on a main running rail, and a driving body that is hinged to the drive body and drives a sub running rail. It is equipped with a chassis having rolling driven wheels, and the transport vehicle direction conversion unit is provided on a movable main traveling rail connected to the main traveling rail, and on a side of the movable main traveling rail, and is configured to change direction with respect to the traveling direction of the transport vehicle. a pusher that connects the chassis to the main running rail by orbiting it at right angles; a crank motor that is installed at the end of the movable main running rail and rotates the chassis 180 degrees around the hinge;
A stop/start stator provided approximately at the center of the movable main running rail and having the same structure as the stator of the linear motor, and a guide provided at the lower portion of the movable main running rail to guide movement of the movable main running rail. It is characterized by being equipped with rails.

(E) Embodiment FIG. 1 is an overall perspective view of a conveying device using a linear motor according to the present invention.

In other words, in the figure, the track includes two main running rails arranged at a predetermined interval and two auxiliary running rails arranged parallel to the outside of the main running rail, and the track as a whole has one round trip lane. The carriage is configured to reciprocate in the directions indicated by and.

Now, in the figure, 40 is a stator made of a magnetic material such as pure iron, and the stator 40 is fixedly installed in sets of two on a main running rail 50 whose cross section is formed into a substantially concave shape. Station S1,S
2, S3, and S4.

The auxiliary running rail 60 is installed to correspond to the main running rail and spaced apart by the vehicle width of the transport vehicle.

Reference numeral 70 denotes a transport vehicle, and this transport vehicle includes a chassis 71 and a drive body 72 hingedly connected to the chassis 71 via a hinge 76 . and,
The chassis 71 has an opening 73 having a predetermined area.
and 74, and a plurality of wheels 75 that roll on the main running rail 50 and the auxiliary running rail 60.

Here, the movable element made of pure iron or the like provided in the driving body 72 and the stator constitute a linear motor.

At both ends of the track, there are a transport vehicle direction converter 80 and a transport vehicle direction converter 80' for changing the direction of the transport vehicle.
0' denotes a movable main running rail 81, a pusher 82 provided on the side of the movable main running rail 81 and for moving the movable main running rail 81 at right angles to the traveling direction, and a pusher 82 of the movable main running rail 81. A crank motor 83 is provided at the end and rotates the chassis 71 by 180 degrees, and a stop/start stator 84 having a structure similar to the stator 40 is fixed approximately at the center of the movable main traveling rail 81. , a guide rail 85 fixed to the lower portion of the movable main running rail 81 and guiding the movement of the movable main running rail 81 in the lateral direction. 851 is a guide.

A crank rod 831 is attached to the main shaft of the crank motor 83.
An insertion rod 832 is provided at the tip of the chassis 71, and when the chassis 71 is rotated, the chassis 71 is
It is configured to be inserted into a rod insertion hole 711 in the horizontal frame of the rod.

FIG. 2 is a side view of the lower part of the conveyance vehicle to show the linear pulse motor part of the conveyance device according to the present invention, and FIG. 3 is a side view of the conveyance vehicle direction conversion section when the driver cover 721 is removed. FIG. 3 is a front view showing a situation in which the lane of the transport vehicle is changed in FIG.

That is, the stator 40 fixed to the main traveling rail 50 has a comb-shaped core 4 formed at a constant pitch.
1 and a coil 42 provided on each comb tooth of the core 41, and the tips of the comb teeth are formed with a plurality of projections and depressions 411 as shown in the figure.

The windings of the coil 42 are wound so that magnetic flux is generated vertically within the comb teeth as shown by dotted arrows. The method of passing current to each coil is to pass direct current to the adjacent coils,
The tips of the magnetic poles are configured so that they alternately become NS.

On the other hand, a driving body 72 provided at the lower side of the transport vehicle
A driver cover 721, a frame 722, a mover 723 fixed to the frame 722 on the lower surface of the frame 722, a wheel holder 724, and a main wheel 725.
and a follower wheel 751 on the chassis side.

Here, the movable element 723 has a plurality of irregularities 41 provided at the tip of the comb teeth of the core 41 of the stator 40.
It has a comb-teeth shape with a pitch slightly different from the pitch of 1.

Next, the operation of such a transport vehicle will be explained below.

It is assumed that the transport vehicle is initially stopped at station S1.

It is assumed that the transport vehicle goes to station S2 and station S3 and receives a command from a separate computer to stop there.

The commands from the computer are input to a separate controller, and the stator 40 at station S1 is sequentially excited based on the signals from the controller, and the carriage moves in the direction.

The transport vehicle reaches station S2 and stops at station S2.

After the work at the station S2 is completed, the stator 40 at the station S2 is energized to start the transport vehicle, and the transport vehicle reaches the transport vehicle direction changing section 80.

When the transport vehicle reaches the transport vehicle direction changing section 80, the stop/start stator 84 is sequentially energized based on a command from the computer until the transport vehicle is at a preset position.

The transport vehicle is temporarily stopped at the transport vehicle direction changing section 80 .

An insertion rod 832 at the tip of the crank rod 831 is inserted into the chassis 7 by a pusher (not shown).
It is inserted into the rod insertion hole 711 in the horizontal frame of No. 1.

Next, the crank motor 83 is operated to rotate the chassis 71 by 180 degrees in the direction of the arrow, and the pusher 82 is operated to connect the movable main running rail 81 to the main running rail 50 of the other lane. That is, at this time, the transport vehicle is
The vehicle will be transferred to the lane on the near side shown in the figure (the lane including stations S3 and S4).

The stop/start stator 84 is sequentially excited based on a command from the computer to start the transport vehicle, and the insertion rod 832 is removed from the rod insertion hole 711 at the same time as the transport vehicle starts moving. Thereafter, the crank rod 831 rotates 180 degrees in the opposite direction and returns to its original position until the next carriage arrives.

The transport vehicle reaches station S3 and stops there.

Further, the operation of the conveyance vehicle direction changing section 80' is completely similar to that of the conveyance vehicle direction changing section 80.

Although the above description has been made assuming that the direction of the magnetic flux generated from the stator is perpendicular, the present invention is not limited to this. For example, as shown in FIG. 50 has a slightly broader gauge than that shown in FIG.
23 is included in the driving body.

(F) Effect The present invention provides a transport vehicle equipped with a reciprocating lane track consisting of a main traveling rail provided on the inside and a sub-travel rail provided on the outside, a chassis and a drive body hinged to the chassis; A conveyance device comprising a conveyance vehicle direction changing section provided at an end of a track, wherein the main traveling rail is provided with a stator of a linear motor, the drive body is provided with a movable element of the linear motor, and the main travel rail is provided with a stator of a linear motor, A linear motor is configured to rotate the chassis of the transport vehicle by 180 degrees when the transport vehicle reaches the transport vehicle direction conversion portion, and to transfer the movable main traveling rail on which the driving body is mounted from lane A to lane B. Since this is the transport device used, it has the following effects.

The present invention also applies to round-trip lanes, for example, after working on the processed product A in the A lane, unloading the A at the end of the A lane, and loading the B processed product on the B lane and working on it. It is possible to provide a conveying device which is suitable for loading and unloading processed products at the end of each lane, has a relatively simple structure, and can be installed in a small installation area.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of a conveyance device using a linear pulse motor according to the present invention, and FIG. 2 is a conveyance device showing a portion of the linear motor in a conveyance vehicle direction conversion section in the conveyance device according to the present invention. FIG. 3 is a side view of the lower part of the trolley, FIG. 3 is a front view showing the situation in which the lane of the transport vehicle is changed in the transport vehicle direction changing section when the driver cover is removed, and FIG. 4 is a view of another embodiment of the invention. FIG. 2 is a front view of the transport vehicle seen from the direction of travel with the driver cover removed. S1, S2, S3, S4...Station, 4
0... Stator, 50... Main running rail, 60...
Sub-traveling rail, 70... Transport truck, 80, 80'
...Transportation vehicle direction conversion unit.

Claims (1)

[Claims] 1. A transport device that uses a linear motor consisting of a track, a transport vehicle that runs on the track, and a transport vehicle direction conversion unit that is provided at the end of the track and changes the travel lane of the transport vehicle, wherein the track runs at predetermined intervals. Two main running rails arranged, two auxiliary running rails arranged outside and parallel to the main running rails,
The transport vehicle includes a stator of a plurality of linear motors provided on a main running rail, and the carrier has a drive body having a movable element of the linear motor and a plurality of main wheels rolling on the main running rail; The chassis includes a chassis having a follower wheel that is hinged to a drive body and rolls on a sub-travel rail;
A pusher is provided on the side of the movable main running rail and is connected to the main running rail by orbiting at right angles to the direction of movement of the transport vehicle, and a pusher is provided at the end of the movable main running rail and rotates around the hinge.
A crank motor that rotates 180 degrees, a stop/start stator that is provided approximately at the center of the movable main running rail and has the same structure as the stator of the linear motor, and a movable main running stator that is provided at the bottom of the movable main running rail. A conveyance device using a linear motor, characterized in that it is equipped with a guide rail that guides the movement of a travel rail.