JPS5969317A - Multi-function conveyer apparatus using linear step motor - Google Patents

Abstract

PURPOSE:To improve the accuracy of positioning a pallet truck, to increase the transport speed and to reduce the manufacturing cost by using an air bearing between a track and the pallet truck. CONSTITUTION:A conveyer apparatus using a linear step motor includes a track 1 where a primary winding is mounted at a station portion thereof and a pallet truck 5 running on the track 1 where a secondary winding is mounted, wherein air bearings A, B are interposed between the track 1 and the truck 5 to retain the truck 5 at a position adjacent but apart from the track 1. Thus, the accuracy of positioning the truck 5 is considerably improved, and the moving speed of the truck 5 is increased. Though a lot of trucks are conventionally fixed to the track 1, at an uniform level, hole drilling process may be enough in this method, and the manufacturing cost can be well reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a conveying device using a linear step motor used in processing and assembly lines, and particularly to a conveying device having an XY positioning function within a processing and assembly station.

Devices that use linear step motors for conveyance are similar to the 1# feed by a conveyor. ■ They can only move once in one direction. ■ The entire body is always fed at a constant speed. It does not include drawbacks such as difficulty in stopping and positioning the object, and does not have disadvantages such as difficulty in stopping and positioning the object, and unlike transportation using a linear induction motor, ■It is impossible to position the object to be transported, and ■Controlling the deceleration and stopping of the object to be transported. There are no drawbacks such as difficulty.

Focusing on the characteristics of the Una linear step motor, we installed the primary winding part in the station part of the track and the secondary fl11 part in the carriage to be transported, and used a nine-way step motor to Acceleration of the trolley in the section. A conveying device has been developed which performs deceleration and positioning, and also allows the entire truck to travel between the stations using its own inertia (Japanese Patent Application No. 104035/1982).

In this conventional conveying device, workpieces or semi-finished products are fixed to or mounted on pallet carts and moved on guiding tracks disposed across the processing and assembly lines. Normally, linear step motors have a movable winding part, but with this device, the winding part is fixed on the track side and power needs to be supplied to the zero bogie side. This allows the trolley to be moved over long distances.

■Tai ffi! T, f The handling of the bogie becomes easier as it can be freely removed from the track. (You can freely reduce the number of bogies running on the l line.) ■Force [1] Since the distance between stations is not so large on the 1 production line, it is customary to run between the stations according to the 1. Then, since the windings need to be placed only at the stations, the installation cost will not be as high as 21., and the more the number of carts handled increases, the more advantageous it will be.

Sword (at the station where first work or assembly work is done, the first
As shown in the figure, an appropriate number of linear step motor windings 2, for example eight, are arranged between the tracks 10. This winding section 2 consists of a magnetic core 4 having a winding 3 in the center and is arranged at right angles to the track 1. The bar 1-knot bogie 5 runs on the track 2 with a car 6, and on its lower surface, grooves 7 with equal pitches are provided at positions opposite to the magnetic core 4 marked with -, which serve as the secondary side of the linear step motor. 7. 8 is a lateral guide wheel.

This device attempts to form a complete magnetic path so that the magnetic flux from the excited electromagnet becomes large, that is, the magnetic resistance becomes small. Restoring force), and when stopping, the magnetic resistance always stops at a position where the magnetic resistance is at its minimum. However, if the frictional force between the track 1 and the pallet truck 5 is large,
It stops at a position where the holding force and this frictional force are equal, and cannot reach the position where the magnetic resistance is minimum. Therefore, this is a major factor in deteriorating the positioning accuracy of the pallet truck. On the other hand, in addition to the horizontal forces such as the above-mentioned propulsive force or holding force, a vertical force also acts on the pallet truck, so it appears that the pallet truck's own weight has increased, and this self-weight is multiplied by the coefficient of friction. The frictional force calculated by 2 is also a considerably large value.

Furthermore, if the frictional force is large, the basic performance will be significantly deteriorated, such as the energy loss during movement will be large.

Kihatsu'JJ i,] provides an extremely effective means of improving the above-mentioned drawbacks, and provides a track 1 and a pallet truck 5.
By using an air bearing between
Improving i'j determination accuracy, (2+increasing conveyance speed, ■
This was achieved with the aim of reducing manufacturing costs and increasing intelligence.

A detailed explanation will be given below with reference to the drawings.

FIG. 2 shows the actual hca fJ of the present invention. An opening 61' (il- provided instead of the wheel 6, an opening 8' instead of the furrow 8)
and open D6' through the vibrator 9.
An air bearing A, 8i is interposed between the track 1 and the pallet truck 5 by supplying compressed air to the pallet truck 5. Note that since the compressed air supplied from the opening L61 can flow into the side surface of the pallet truck 5 to form the air vent ring B2, the opening 81 may be unnecessary.

According to this configuration and VC, the presence of the air bearing A allows the pallet truck 5'fr to be held so that the gap between the adjacent part 4αt of the magnetic core 4 and the pallet truck 5 and the pallet platform 11 (5 is approximately 50 μm). can do.

Of course, since the track 1 and the butt truck 5 do not come into direct contact with each other, the frictional force is extremely small.

In the foregoing, an embodiment of the present invention has been shown and its effects have been described in the apparatus ft: which performs conveyance and positioning only in the 1Ij-axis direction. However, the present invention provides multiple axially conveyed or I
-, i: It can be used in the same way in a device for positioning, and has the same effect.

An example is shown in FIG. Figure 1 or? The same members as in Figure X2 are given the same numbers.

In FIG. 3, when −97+, i F of the pallet truck 5 is transported to the position Pl, if a matrix-shaped magnetic +'1 surface is arranged on the lower surface of the pallet truck 5, the magnetic core will be 40 degrees. 40
It is clear that after positioning, if the cart 5 is driven by the magnetic cores 41, 41, it can be transported in the direction of arrow W, for example.

In the embodiment of the present invention, the track 1 is provided with an air supply opening 6'(8"), but the same effect can be obtained by providing an air hole between the magnetic core 4 and the pallet truck. It goes without saying that this device is placed horizontally, but if it is placed at any angle with respect to the horizontal direction, The effect in Moki Upeaki is clearly recognized.

As mentioned above, according to the wooden invention, the track and pallet stand Tl
Since the air vent ring is interposed between the pallet truck and the pallet truck, α) the positioning accuracy within the pallet truck is significantly improved, and the moving speed of the pallet truck is increased.

c3) For a large number of Jlj
Since only one knife is required, the manufacturing cost is reduced by 1. Furthermore, if air rings are used over the entire trajectory, it will be possible to transport objects over longer distances between stations using inertial force, and the distance between stations can be reduced.

■Since there is always no contact between track 1 and pallet stands IIT and 5, the product life is extended.

This results in 711 points.

[Brief explanation of the drawing]

Figure 1 is a 1111 side view and a sectional view of a conventional conveying device fi,
FIG. 2 is a sectional view of one embodiment of the conveying device of the invention, and FIG. 3 is a plan view and a sectional view of another embodiment. 1. Orbit 2. Winding part 3. Winding wire 4.40, 41. . Magnetic core 50. Pallet truck 6. Car 6'1. Opening a. , Groove 8°. . Plan P "Co-car 81. Opening
9. . , Vibe A, B, , Air Beryl Ring 2 Applicant Daini Sayako Co., Ltd. Joint Agent Patent Attorney Mogami ``F') rkawa-7] -l ,'3 ) Add, 9N (g)

Claims (1)

[Claims] The primary winding section is installed in the station section of the track 10! 11
．． Michigami'f: In a transport device using a linear step motor provided with a moving pallet platform, by interposing an air belt between the track and the pallet truck, A multifunctional conveyance device using a linear step motor, characterized in that the pallet truck is held at a position adjacent to and apart from the track.