JPH0613384U - Linear DC motor type carrier - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an excellent inexpensive linear DC motor type carrier device having a simple structure, good electrical efficiency. [Structure] The stator 2 is installed on the circuit board 5 and is mounted on the circuit board contact 1
5 and a resin mold coil 9 electrically connected by a coil contact 13, and a stator set portion 1a for mounting the circuit board 5 and a space 1b are provided in the lower portion, and the traveling roller 4 of the movable element 3 travels in the upper portion. Arranged arbitrarily in the portion where the thrust is required to be generated in the conveyance path 1 provided with the surface 1c, the magnet row 16 of the mover 3 facing the two rows runs so as to be sandwiched.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a linear DC motor type transporting device for transporting lightweight objects at high speed.

[0002]

[Prior art]

 As conventional transfer devices, chain-type, self-propelled carrier-type and induction type linear motor-type transfer devices have been embodied. This chain type transfer device is one in which the output of the rotary motor is decelerated by a speed reducer and connected to the transfer chain by an interlocking mechanism, which requires chain maintenance and is not suitable for high speed transfer due to its low transfer speed. Is.

Further, a carrier device using a self-propelled carrier is composed of a rail in which a power feeding line is arranged over the entire transport path and a self-propelled carrier that travels by receiving electricity from the power feeding line by a brush or the like. Regular brush maintenance is required, and the system becomes very expensive as the number of carriers increases and the number of carriers increases.

A transfer device using an induction type linear motor generates a moving magnetic field by a primary coil of a transfer path, generates an overcurrent due to induction in a secondary conductor of a traveling body, and generates thrust in a magnetic field traveling direction. It is possible to increase the thrust of the moving body at a high speed, but since it causes overcurrent loss, it has a low power conversion efficiency and is not suitable for carrying lightweight objects.

[0005]

[Problems to be solved by the device]

 The present invention solves the above-mentioned problems of the prior art, and uses a linear DC motor that can realize low electrical cost, low maintenance, and high electrical efficiency for the purpose of carrying lightweight objects at high speed. A structure of a carrier is provided.

A further problem of the present invention is that a linear motor structure capable of generating thrust and braking force when not energized can ensure safety even if a power failure occurs during traveling, and the structure is simple. And to provide an inexpensive linear DC motor type transfer device.

[0007]

[Means for Solving the Problems]

 In order to solve the problem, the present invention provides a linear DC motor type transfer device including a transfer path, a plurality of stators arranged along the transfer path, and a mover capable of traveling on the transfer path. A contact structure that is composed of a resin mold coil in which the coil is resin-sealed and a circuit board that controls energization of the mold coil, and the coil contact provided on the mold coil and the board contact provided on the circuit board are connected. And a movable element configured by a traveling roller and two rows of magnets, the movable element being arranged so as to sandwich the mold coil of the stator, and the movable element being capable of traveling by the traveling roller. A linear DC motor type characterized in that it is provided with a conveying path formed in a cross-sectional structure in which a stator can be arranged, and the stator is arbitrarily arranged at a portion of the conveying path where thrust is required to be generated. To provide a feeding apparatus.

In order to solve a further problem, according to the present invention, a stator, which is a conductive plate-integrated mold coil for integrally molding the mold coil with a conductive plate, is arranged at a stop position of the mover in the transport path. To provide a linear DC motor type transfer device characterized by:

[0009]

[Action]

 In the linear DC motor type transport device of the present invention, when the mover reaches the stator, when the mold coil is energized, the mover generates thrust and accelerates, and in the place without the stator, the accelerated inertial force is applied. As a result, the mover travels along the transport path, and when reverse current is applied to the mold coil, a reverse thrust force is generated and it stops.

Further, when the mold coil is replaced with the conductive plate-integrated mold coil and is arranged in the transport path, the molded coil is placed on the stator even when the conductive plate-integrated mold coil is not energized while the mover is running. When the mover arrives, an eddy current is generated in the conductive plate due to the magnetic field of the magnet array, so a braking force acts on the mover.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a linear DC motor type transfer device according to an embodiment of the present invention. The carrier device of this embodiment basically mounts a circuit component for controlling the energization of the resin mold coil 9, and has a circuit board 5 having a substrate contact 15 with the mold coil 9 and the circuit board 5 on the circuit board 5. A conveyer path 1 having a cross section structure in which a stator 2 constituted by a resin mold coil 9 which is installed and electrically connected to the circuit board 5 and the stator 2 can be arranged and which has a roller receiving surface 1C of a mover 3 is provided. And a traveling roller 4 and a mover 3 having two rows of magnets 16 facing each other and traveling on the conveying path 1, and a portion that needs to generate thrust and braking force on the conveying path 1. This is the structure of a linear DC motor type transfer device in which the stator 2 can be easily arranged.

The structure of the linear DC motor type transport device will be further described with reference to FIG. The carrying path 1 has a generally U-shaped cross section, and has a shelf-shaped stator set portion 1a for setting the stator 2 inside. The space 1b is a space for electronic components of the circuit board 5 of the stator 2 and for wiring, and the roller receiving surface 1c is a receiving surface of the traveling roller 4 of the mover 3. The transport path 1 is arranged throughout the transport area, and the separately assembled stator 2 can be installed at any position. The transport path 1 is formed of a non-magnetic aluminum material or copper material. Inner wall surface portions 1d are formed on both sides of the middle of the transport path 1.

The stator 2 will be described with reference to FIGS. 1, 2A and 2B. 2A is a front view showing the stator 2 in an exploded manner, and FIG. 2B is a side view showing the stator 2 in an exploded manner. The stator 2 is composed of a circuit board 5 and a resin mold coil 9. The resin-molded coil 9 molded in a substantially T-shaped cross-section is formed by resin-molding n (n is an integer) air-core flat coil 11 into the shape shown in FIGS. 2 (a) and 2 (b). A coil contact point 13 connected to each flat coil 11 is provided at an electrical connection portion with the coil 5. Each flat coil 11 has a winding start end and a winding end end, and in this embodiment, three flat coils 11 are star-connected or triangular-connected. The flat coil 11 has a total width of 3 L, the width of each winding portion is L, and the width of the air core portion is L. A width of L / 3 is provided between the flat coils 11, and both ends are set to L / 6.

The circuit board 5 on which the circuit portion 2 a is mounted has a shape capable of arranging m resin mold coils 9 thereon, and is suitable for the coil contact 13 of the electrical connection portion with the resin mold coil 9. It has a substrate contact 15 at various positions. This circuit board 5 is provided with a magnetic sensing element 12 for detecting a magnetic pole of the mover 3, and constitutes a control circuit for controlling energization of the flat coil 11, and the coil contact 13 and the board contact 15 are connected to each other. By making contact with each other, the flat coil 11 is electrically connected.

FIG. 3 is a sectional view for explaining the mover 3 of this embodiment. The mover 3 is composed of a magnet array 16 arranged in the longitudinal direction so that the magnetic poles face each other, a traveling roller 4, and a magnet 17 for a magnetic detection element arranged in the same positional relationship as the magnet array 16 in the traveling direction. To do. As shown in FIG. 3, the movable element 3 has a positional relationship in which the magnet array 16 sandwiches the flat coil 11 and generates thrust by energizing the flat coil 11. A guide roller 6 is provided on the side surface of each yoke 3a to guide the mover 3 to the inner wall surface portion 1d.

FIG. 4 is a schematic diagram schematically showing the operation of the linear DC motor type transport device of this embodiment. The mover 3 is composed of a magnet array 16 in which five magnets each having a length of 2 l are connected in series. The flat coil 11 has coil winding portions 11a and 11b, and the magnetic sensing element 12 is arranged at the center of each coil winding portion 11a and 11b.

An example of the configuration of the carrying device according to this embodiment will be described with reference to FIGS. 5A and 5B. FIG. 5A is a perspective view of the carrier device of the present embodiment, and FIG. 5B is a partial configuration diagram of the carrier device of the present embodiment. As shown in FIG. 5A, the transport path 1 is arranged in a ring shape over the entire transport area, and the stator 2 is disposed at a portion where thrust is required to be generated. The part where the stator 2 is not installed is the idle running part 20. A work 21 is suspended from the mover 3. The transport path 1 may be suspended by a suspending wire 23.

As shown in FIG. 5B, in the case where the conveyance path 1 is linearly installed between A and C, the stator 2 is required to generate a thrust point A, an intermediate acceleration point B, and It is installed at the stop point C, and in response to a command from the central control unit 7, when the mover 3 reaches the stator 2 at the points A to C, the positive and negative thrusts required for acceleration and stop are generated. I will do it. Specifically, the stator 2 is connected to the central controller 7 by a communication line 24. The starting point A and the stopping point C may be combined. Here, when the mover 3 reaches the stator 2, the magnetic sensing element 12 senses the magnetism detection magnet 17 on the mover 3 as shown in FIG. In order to generate thrust in the negative direction, the circuit board 5 on the transport path 1 energizes the flat coil 11 of the stator 2 and moves the mover 3 in the indicated direction.

[0019]

Second Embodiment In the linear DC motor type conveying device as shown in the first embodiment, no thrust is generated in the negative direction when the power is not supplied. Therefore, if a power failure occurs while the mover 3 is running, control becomes impossible and the mover 3 does not stop, which is a dangerous situation. In order to prevent this, it is necessary to provide a mechanical control device, which makes the structure complicated and expensive.

The problem of the second embodiment is that a linear motor structure capable of generating a forward thrust in the mover 3 and a braking force when the mover 3 is not energized causes a power failure while the mover 3 is running. It is to provide a linear DC motor type transfer device that can ensure safety even if problems occur.

In order to solve the above-mentioned problems, the second embodiment provides a stator 2 in which the flat coil 11 is an aluminum plate-integrated molded coil 10 integrally formed with the aluminum plate 8 in the transfer device of the first embodiment. Provided is a linear DC motor type transfer device arranged at a stop point C of a transfer path 1.

The basic structure of the second embodiment is similar to that of the first embodiment shown in FIGS. 1 to 5, and the mold coil 9 shown in FIG. 2 is integrally molded with the aluminum plate 8.

FIG. 6A is a front view of the aluminum plate integrated mold coil 10, and FIG. 6B is a side view of the aluminum plate integrated mold coil 10. The aluminum plate integrated mold coil 10 is a coil in which the flat coil 11 and the aluminum plate 8 are resin-sealed, and the size and shape of the aluminum plate 8 are determined by calculation and experiment according to the required braking force. A coil contact 13 is provided at the lower end of the molding coil 10.

The operation of the second embodiment is as follows. When the stator 2 including the aluminum plate integrated mold coil 10 of FIGS. 6A and 6B is installed between the magnet rows 16 shown in FIG. 3 and the mover 3 is run, the aluminum plate 8 is generated. A braking force corresponding to the traveling speed is generated in the mover 3 by the eddy current generated. Here, in the case of the stator 2 using the aluminum plate integrated mold coil 10 of FIGS. 6A and 6B, when the flat coil 11 is energized, a thrust force is generated in the mover 3 and a braking force is generated when not energized. Can occur. When the flat coil 11 is energized, the speed of the mover 3 decreases as compared with the case where the aluminum plate 8 is not provided.

Thus, by using the molded aluminum plate mold coil 10 of the second embodiment with respect to the molded coil 9 of the first embodiment, it is possible to provide a transfer device that can easily generate a braking force without any other change. can do.

[0026]

[Other Examples]

 In the other transfer device, the movable coil is used by using the aluminum plate integrated mold coil 10 of the second embodiment at the stop point C and the mold coil 9 of the first embodiment at the intermediate accelerating point B where speed is required. The speed of 3 is not decreased, and the movable element 3 can be almost stopped even during a power failure. The aluminum plate 8 can be replaced with a conductive plate such as a copper plate.

[0027]

[Effect of device]

 As described above, according to the transfer device having the structure of the present invention, the stator as the thrust generating unit can be set at an arbitrary position required after the transfer path is installed. Also, any number of mold coils can be arranged on the circuit board, and thrust can be easily generated continuously. Furthermore, the contact structure between the molded coil and the circuit board makes the mounting of the stator much easier than in the case of wiring individual flat coils. Further, as described above, there is an excellent effect that a low cost and maintenance-free transfer device can be configured by a linear DC motor having excellent electric efficiency. Further, when the present invention uses the conductive plate-integrated mold coil, it is possible to provide a transfer device having a braking force without requiring a special braking device, and only changing the mold coil and no modification is required. . In addition, the stator of the transport path can be rearranged as desired with or without braking force (high speed), and the rearrangement can be easily done only by changing the mold coil. The braking force can be changed by changing the size and shape. Therefore, even if a power failure or the like occurs during traveling of the mover, the mover can be stopped to ensure safety, and a transport device having a simple structure and an inexpensive structure can be provided. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a linear DC motor type transfer device according to an embodiment of the present invention.

FIG. 2 is a front view and a side view showing a stator in an exploded manner.

FIG. 3 is a cross-sectional view illustrating a mover of this embodiment.

FIG. 4 is a schematic view schematically showing the operation of the linear DC motor type transport device of the present embodiment.

5A and 5B are a perspective view and a partial configuration diagram showing a configuration example of a carrying device of the present embodiment.

FIG. 6 is a front view and a side view of a pair of aluminum plate molded coils according to a second embodiment.

[Explanation of symbols]

1 ... transport path, 2 ... stator, 3 ... movable element, 4 ...
Traveling roller, 5 ... Circuit board, 9 ... Resin mold coil, 10 ... Aluminum plate integrated mold coil, 13 ... Coil contact, 15 ... Board contact, 16 ... Magnet array.

Claims (2)

[Scope of utility model registration request] 1. A linear DC motor type transfer device comprising a transfer path, a plurality of stators arranged along the transfer path, and a mover capable of traveling on the transfer path, wherein a coil is resin-sealed. And a stator having a contact structure in which a coil contact provided on the mold coil and a substrate contact provided on the circuit board are connected to each other. A mover that is composed of a roller and two rows of magnets and is arranged so as to sandwich the mold coil of the stator, and a cross-sectional structure in which the mover can be moved by a traveling roller and the stator can be arranged. A linear DC motor type transfer device comprising the above-mentioned transfer path, and the stator is arbitrarily arranged in a portion of the transfer path where thrust is required to be generated. 2. The stator according to claim 1, wherein the molded coil is integrally molded with a conductive plate to form a conductive plate-integrated molded coil, and the stator is disposed at a stop position of the mover in the transport path. Linear DC motor type conveyor.