JPH01133817A - Non-ferrous metal can conveyer - Google Patents

Abstract

PURPOSE:To surely convey an aluminum can along a conveying path in a high speed by a linear induction motor further facilitated in its arrangement constitution by providing the linear induction motor and a guide to be arranged in both sides of the conveying path, in the case of a rolling conveyer for the aluminum can or the like. CONSTITUTION:An aluminum can 20 is placed falling down sideways on a conveying path plate 11. Thus the can 20 places its both end surfaces 21, 22 in parallel with an advancing magnetic field generating surface of linear induction motors 30, 40. Here the linear motors 30, 40 are excited further equalizing direction and intensity of a generated advancing magnetic field. In this way, the can 20 is rolled in a direction of the advancing magnetic field further conveyed being guided by a guide 13. By this constitution, the can be conveyed in a high speed with no dislocation from a conveying path. While the linear motor enables its arrangement constitution to be easily obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-ferrous metal can conveying device for conveying non-ferrous metal cans such as aluminum cans by a linear induction motor.

Conventionally, as shown in Fig. 16, a non-ferrous metal can conveying device that conveys non-ferrous metal cans such as aluminum cans using a linear induction motor (hereinafter referred to as a linear motor) has There is one that is conveyed while standing upright and sliding on the conveying surface.

That is, the linear motor 30 is provided below the conveyance path 10, the traveling road plate 11 is arranged along the entire length of the conveying path on the traveling magnetic field generating surface of the linear motor 30, and the non-ferrous metal cans 20 are placed on this traveling road plate 11.
(hereinafter simply referred to as a can) is placed upright. When the linear motor 30 is excited, a thrust is exerted on the can 20 by the action of the eddy current generated in the can and the traveling magnetic field, and the can 20 slides on the conveying path surface in the advancing direction of the magnetic field (in the direction of the arrow in the figure) and is conveyed. It is something that

Further, as shown in FIG. 17, the can 20 is moved by a linear motor 30.
There is a type of can 20 that is placed sideways on top of a can and conveyed by rolling while rotating the can 20.

In each of the above systems, the linear motor is arranged so that the traveling magnetic field generating surface of the single-sided linear motor is parallel to the conveying path surface. On the other hand, some linear motors are arranged so that the traveling magnetic field generating surface of the single-sided linear motor is perpendicular to the surface of the conveyance path, thereby achieving high-speed conveyance.

However, in the case of the can upright conveyance system shown in FIG. There is a fear that scratches may occur due to friction with the bottom surface 21 of the can 2o, and that the can 2o may fall over. In order to prevent this, it is necessary to make the running road plate 11 a special configuration, which increases the processing cost of the running road plate 11.

In addition, in the rolling conveyance system shown in FIG.
As explained with reference to FIG. 6, the can 2o is conveyed while being rotated in the direction of the arrow shown in the figure in the traveling direction of the magnetic field of the linear motor 30 under the thrust force. However, since the thrust force acting on the can 20 is maximum at the point where the can 20 contacts the traveling road board 11, the can 20 cannot move in the opposite direction to the traveling direction.

Further, in the case of the rolling conveyance method in which the linear motor 30 is provided on the upper part of the can, the arrangement of the linear motor 30 becomes complicated.

Furthermore, in a conveying device in which the traveling magnetic field generating surface of the single-sided linear motor 30 and the conveying path surface are perpendicular to each other, the conveying path surface is arranged so that the traveling magnetic field generating surface of the linear motor is parallel to the bottom view 21 of the can 20. The can 20 is placed on top and is conveyed by rolling, but due to the repulsive force f generated perpendicularly to the thrust generating surface of the linear motor 30, the can deviates from the rolling conveyance direction X and the traveling direction becomes X'. Sometimes(
(See Figure 4). Therefore, due to friction between the bottom surface 21 of the can 20 and the guide, the can cannot be smoothly rolled and conveyed, and the ends of the can 20 are also damaged.

The present invention has been made in view of the above points, and provides a non-ferrous metal can conveying device that allows cans to be conveyed at high speed without the rolling direction of the can being deviated from the traveling direction, and that facilitates the arrangement and configuration of linear motors. is intended to provide.

A non-ferrous metal can conveying device for conveying non-ferrous metal cans for
The non-ferrous metal can transport device includes a transport path, a near motor, and a transducer linear motor whose traveling magnetic field generating surface is orthogonal to the surface of the transport path, and which is provided along the transport direction of the transport path. It is characterized in that the linear motors are provided so that their magnetic field generating surfaces face each other.

Both end and bottom surfaces of a non-ferrous metal can placed on the surface of the conveyance path receive the same amount of thrust due to the action of a traveling magnetic field provided on the conveyance path or generated by a near motor, and the non-ferrous metal can rotates and deviates from the direction of travel. It moves along the conveyance path and is conveyed.

In addition, if the thrust generated by the difference in the shape or area of both end faces of the can is different, by controlling one or both linear motors and balancing the thrust generated at both end faces of the can, the can can be moved from the direction of travel. Conveyed without shifting.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a non-ferrous metal can conveying device according to the present invention (hereinafter referred to as the device of the present invention) will be described with reference to the drawings.

FIG. 1 is a schematic explanatory diagram showing an embodiment of the apparatus of the present invention. Note that components having the same configuration as those of the prior art are indicated by the same reference numerals.

In the figure, reference numeral 10 denotes a conveyance path made of a non-metallic material or a synthetic resin material, and the upper surface of the conveyance path 10 is used as a running road plate 11.

Reference numeral 20 is a non-ferrous metal can such as aluminum, which is placed horizontally on the running road board 11.

Reference numerals 30 and 40 denote linear motors, which are formed by stator cores 31 and 41 and excitation coils 32 and 42 wound around the stator cores, and together with the can 20, each linear motor is constructed. A plurality of linear motors 30 are arranged on one side of the conveyance path 10 along the conveyance direction, and are fixed by a frame (not shown).

The tooth surface of the stator core 31 is provided so as to be parallel to the bottom surface 21 of the can 20 placed on the running road plate 11, and the traveling magnetic field generating surface of the linear motor 30 is perpendicular to the surface of the running road plate 11. It is like that.

A plurality of linear motors 40 are disposed on the other side of the conveyance path 10 along the conveyance direction, and are fixed by a frame (not shown). Similarly to the linear motor 30, the tooth surface of the fixed iron core 41 is provided so as to be parallel to the upper surface 22 of the can 20 placed on the transport path plate 11, and the traveling magnetic field generating surface of the linear motor 40 is aligned with the traveling path. It is arranged perpendicular to the surface of the plate 11. And linear motor 3
The traveling magnetic field generating surfaces of the linear motor 40 and the linear motor 40 are arranged to face each other. Further, FIG. 2 shows how the linear motors 30 and 40 are arranged in the longitudinal direction of the conveyance path 10.

Respective adjacent motor ends 33.34 and 43.44
The respective motor joints 35, 45 are defined such that the motors are offset at the same longitudinal position of the conveying path 10, and the linear motors 30, 40 are respectively disposed along the conveying path 10 in the longitudinal direction.

Further, on both sides of the conveyance path plate 11, plate-shaped guides 12 and 13 made of a non-magnetic metal material or a synthetic resin material are erected over the entire length of the conveyance path 10. The guide 12 maintains a constant gap between the bottom surface 21 of the can 20 and the linear motor 30, and the guide 13 maintains a constant gap between the top surface 22 of the can 20. It is made to stay in place.

Next, the operation of the device of the present invention will be explained.

When the can 20 is placed sideways on the conveyance path board 11, the can 2
0, as shown in FIG. 1, both end surfaces 21 and 22 thereof are parallel to the traveling magnetic field generating surfaces of the linear motors 30 and 40, respectively. When both linear motors 30, 40 are energized and the directions and strengths of the respective traveling magnetic fields generated are the same, the can 20 is rolled and conveyed in the direction of the traveling magnetic field. FIG. 3 is an explanatory diagram showing the thrust of each part of the can 20,
This will be explained below with reference to the figures.

In the figure, the bottom surface 21 and top surface 22 of the can 20 are the running road plate 1.
1, A and C1 are on the same plane as the bottom surface 21 and the top surface 22, and the symmetrical points of points A and C with respect to the can axis are B and D. A, B, C, D by linear motors 30 and 40
Since the same magnitude of thrust F1 acts in the same direction at each point, if there is no frictional force Fr between the can 20 and the surface of the running road plate 11 at points A and 0, the can 20 will not rotate. Gliding in the direction of the traveling magnetic field. However, in reality, since the frictional force Fr is generated, the force F1' that moves the can 20 forward at point A and point 0 is F
lo=F l-Fr. That is, the thrust acting on the can 20 is F at point B and D, Fl'' at point A and 0,
Since F, > F, °, the rotational moment due to the thrust FI at points B and D is larger than the rotational moment due to the thrust F, + at points A and 0, and the can 20 moves toward the road plate in the traveling direction. 11 in the direction of the arrow X in the figure while rotating in the direction of the arrow R in the figure.

Therefore, the can 20 is moved by the linear motor 3 on one side of the conveyance path 10.
0, a repulsive force f is applied to the bottom surface 21 of the can 20, causing the can 20 to shift from the rolling conveyance direction X shown by the solid line in FIG. 4 to the traveling direction X' shown by the broken line.

The linear motor 40 on one side also operates in the same manner as described above, and the can 2
The upper surface beam receives a repulsive force f' by the near motor 40.

However, in the device of the present invention, as shown in FIG. 5, the excitation of the single-sided linear motors 30 and 40 is controlled so that they have the same magnetic field strength at the same time, so the repulsive force f=f'. They cancel each other out, and the repulsive force exerted on the can 20 by the motor disappears. Therefore, the can 20 is rolled and conveyed without being deviated from the direction of travel.

Furthermore, as shown in FIG.
0 is at the end 33,34 of one linear motor 30 to provide thrust. Therefore, no matter where the can 20 is on the traveling road plate 11, the can 20 will receive thrust from both or one of the linear motors, and the can 20 will receive thrust from both or one of the linear motors.
can be transported reliably.

FIG. 6 is a control block diagram of the apparatus of the present invention.

The linear motors 30 and 40 are powered from a common power source 51 via a power panel 52. The voltage regulator 53 adjusts the thrust of the linear motor 30, and operates as follows. In FIG. 5, when the thrust generated by the can linear motors 30 and 40 is the same, if the areas of the thrust-receiving surfaces 21 and 22 at both ends of the can 20 differ depending on the shape of the can, etc.
The thrust forces received by each surface 21, 22 are different, and therefore the repulsive force fSf' described above is also different. Therefore, both repulsive forces f, , F2 are not canceled out, and the rotation direction of the can 20 is
It will deviate from O.

When conveying cans with different end surfaces in this way, the thrust generated by the linear motor 30 is controlled by the voltage regulator 53 so that the thrusts received by both end surfaces are the same, thereby ensuring smooth rolling conveyance of the can 20. This is what we do.

7 to 11 show different embodiments of the device of the present invention.

FIG. 7 shows guides 12 and 13 shown in FIG.
1, the configuration of the guides 12 and 13 becomes simple.

FIG. 8 shows a configuration in which the linear motors 30 and 40 are finished by molding, and the opposing sides of each linear motor also serve as guides. In this example, guide 12.1
3 becomes unnecessary. In addition, since the can 20 can be disposed with a small gap g between the surface facing the near motor and the can 20 having chamfered ends, the installation effort is particularly simple.

In FIG. 9, a voltage regulator 54, which is the same as the voltage regulator 53 in FIG. Both different values can be freely changed.

Therefore, it is suitable for controlling the conveyance of cans with different shapes and areas at both ends.

FIG. 10 shows one voltage regulator 55 and a linear motor 30.
It is possible to freely change the thrust force adjustment of and 40 at the same time and with the same value.

Therefore, it is necessary to control the conveyance of cans with the same shape and area at both ends.

11 omits the voltage regulator 55 shown in FIG. 10, and does not require adjustment of the conveyance speed of cans, and is suitable for controlling the conveyance of cans having the same shape and area at both ends.

Although only one non-ferrous metal can is illustrated in the above description, it is also possible to arrange a plurality of cans in succession and transport them by rolling. Further, the surface of the conveyance path and the guide may be made of a non-magnetic material such as synthetic resin or stainless steel as long as it has low frictional resistance and can withstand heat from the linear motor.

Furthermore, as a voltage regulator, in addition to the induction voltage control method, it is also possible to change the voltage and frequency simultaneously using an inverter.

FIG. 12 shows a configuration in which linear motors 30 and 40 are arranged on both sides of a conveyance path 10.
This shows an embodiment in which a non-ferrous metal can 20 is placed vertically on the running road board 11 and transported.In the embodiment shown in FIG. In the embodiment shown in FIG. 14, a non-ferrous metal can 20 is transported.
The vehicle is placed vertically on the traveling road board 11 and transported, and the other configurations are the same.

In this case, as shown in FIG. 13, thrust forces F and F2 generated by the linear motors act on both end faces of the can 20, so the thrust forces Fl and F2 generated by the linear motors 30 and 40 are set to have the same magnitude. Then, the can 20 will be transported without rotating and without shifting in the direction of the traveling magnetic field, that is, the direction of arrow X in the figure, which is the traveling direction.

14 and 15, linear motors 30 and 40 are disposed vertically with their surfaces facing each other across a conveyance path 10, and a non-ferrous metal can 20 such as aluminum is moved by the linear motors 30 and 40. This shows an embodiment in which the device is placed vertically on a road plate 11 and transported.

A predetermined gap g is provided between the can 20 and the upper surface or the near motor 30 so that the can 20 can be transported smoothly.

In this case, the thrust forces F and F2 generated by the linear motors act on the bottom and top surfaces of the can 20, so if the magnitudes of the thrust forces F+ and F2 generated by the linear motors 30 and 40 are the same, the can 20 will move forward. It is conveyed without shifting in the direction of the magnetic field, that is, in the direction of arrow X in the figure, which is the traveling direction. At this time, the can 20 is moved by the linear motors 30 and 4.
0, the bottom and top surfaces are subjected to repulsive forces f1' and f2', but these repulsive forces rl' and 12' have the same magnitude and cancel each other out, so that the repulsive force exerted on the can 20 by the linear motor disappears. Therefore, the can 20 is transported without being deviated from the direction of travel.

In addition, if the bottom and top surfaces of the new 20 have different shapes and areas, the can 2
Since the thrust force received by the bottom and top surfaces of the can 20 is the same, the can 20 can be stably transported without tilting.

According to the present invention, since the linear motor is installed so that the traveling magnetic field generation surface of the linear motor is orthogonal to the conveying path surface, the nonferrous metal can can be rolled and conveyed at high speed. Further, since the magnetic field generation surfaces of the near motors are provided along the conveyance path and are arranged to face each other, thrust can be applied to both end surfaces of the can. Therefore, by controlling the linear motor according to the shape and area of the end face of the can, the thrust forces on both end faces of the can are matched, and smooth rotation can be obtained without the rolling direction of the can deviating from the direction of travel. Therefore, the scope of application of the device of the present invention is not limited by the shape and area of both end faces of the can.

Furthermore, the arrangement and configuration of the motor can be made easier.

[Brief explanation of the drawing]

1 to 17, FIGS. 1 to 15 are drawings related to the present invention, and FIGS. 16 to 17 are drawings showing the conventional technology. Fig. 1 is a schematic perspective view, Fig. 2 is an explanatory drawing showing the arrangement of the beam near motor, Fig. 3 is an explanatory drawing showing the thrust force received by the can, and Fig. 4 is the repulsive force exerted on the can by the beam near motor on one side. FIG. 5 is an explanatory diagram showing the repulsive forces acting on the cans of the linear motors on both sides. 6 to 15 are drawings showing different embodiments of the device of the present invention, in which FIG. 6 is a control block diagram, and FIGS. 7 and 8 are schematic diagrams showing other embodiments of the device of the present invention. FIG. 9 to FIG. 11 are control block diagrams of other embodiments, and FIG.
The figure is a schematic sectional view showing another embodiment of the device of the present invention.
3 is an explanatory view showing the thrust force received by the can of the embodiment shown in FIG. 12, FIG. 14 is a front view showing another embodiment of the apparatus of the present invention, and FIG. 15 is a side view of FIG. 14. FIG. 16 is an explanatory front view of the prior art, and FIG. 17 is an explanatory diagram showing the thrust force received by the can. 10...Conveyance path 11...Traveling road plate 12.13...Guide 20...Non-ferrous metal can 30...Linear induction motor 40...Linear induction motor Patent applicant Hitachi Kiden Kogyo Co., Ltd.

Claims (2)

[Claims] (1) A non-ferrous metal can conveying device that rolls and conveys non-ferrous metal cans, the non-ferrous metal can conveying device comprising a conveying path, linear induction motors provided on both sides of the conveying path along the conveying direction, and the A non-ferrous metal can conveying device characterized by comprising guides provided on both sides of a conveying path along the conveying direction. (2) A non-ferrous metal can transport device for transporting non-ferrous metal cans, the non-ferrous metal can transport device comprising a transport path and linear induction motors provided on the upper and lower surfaces along the transport direction of the transport path. A non-ferrous metal can conveying device characterized by: