JPS60118508A - Magnetic chute - Google Patents

Abstract

PURPOSE:To improve the discharge and transport performance by turning off and on multiple electromagnets provided on the rear surface of a transport rail inclined downward in sequence from the outlet side in coincidence with the cycle of the next process in a magnetic chute for transporting bolts, etc. CONSTITUTION:During the discharge and feed of a magnetic chute 11 at the outlet section 13, the first and the second electromagnets 10A, 10B are turned off and on in coincidence with the cycle of the next process. That is, when the first electromagnet 10A is turned off and the second electromagnet 10B is turned on, a screw 6 adsorbed by the electromagnet 10A is released and fed. Next, the electromagnet 10A is turned on and the electromagnet 10B is turned off, and the screw at the electromagnet 10B is shifted to the electromagnet 10A. Other electromagnets 10 are turned off and on in sequence from the downstream side during one cycle of the next process, and the screw 6 is shifted downstream in sequence. Then, a new screw 6 is fed to the electromagnet 10B. Accordingly, the discharge can be performed efficiently and the transport can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a chute for conveying parts, and in particular to a magnetic shoe 1 that enables magnetic conveyance.

[Background technology]

Conventionally, various types of chutes of this type have been implemented, including those shown in FIGS. 1 to 3, for example. This is a shoe 1-2 for automatically transporting parts such as screws from the vanilla feeder 1 to a required position. This chute 2 is provided by tilting the rail 3 so that the inlet side faces the high-level parts feeder 1 and the outlet side faces the low-level conveyance position. The parts can be transported by sliding them onto the rails 3 using gravity. Furthermore, on the exit side, a mechanical system such as a pair of air cylinders 4 is used as a separating means for supplying parts one by one in accordance with the cycle of the next process.

In such a conventional shoe 1-, the posture is regulated using the external shape of the parts. For example, as shown,
Washi? In the case of a part with a screw 6 with a screw 6, the threaded part of the screw 6 is interposed between a pair of rails 3, and the peripheral edge of the washer 5 is made to protrude from the gap groove 8 formed by the rail 3 and the restraining plate 7. They are conveyed in a state where they are all oriented in the same direction as 6. Therefore, if the width of the gap groove 8 is sufficiently larger than the thickness t of the washer 5, the washer 5 and the succeeding washer 5 may overlap during transportation, making transportation impossible. Furthermore, if the width of the gap groove 8 is set small in order to avoid such an inability to convey, the washer 5 cannot be moved smoothly due to friction, which may cause trouble. Also, when cutting out on the exit side,
Regardless of when the conveyed part is a screw with a washer 6, depending on the external shape of the part, for example, parts that flow closely together, such as nuts, may be difficult to cut out using mechanical separation means such as the air cylinder 4. Met.

[Disclosure of the Invention] This invention was made by focusing on the problems of the conventional chute, and eliminates the inability to transport parts due to interference between parts during transport, and improves cutting on the exit side. The purpose of the present invention is to provide a magnetic chute with improved conveyance performance.

The configuration of the present invention that meets this objective is such that a rail made of a non-magnetic material is tilted diagonally downward toward the exit side, and the rails made of a non-magnetic material are used to sequentially transport parts such as bolts and screws made of a magnetic material in a lined state oriented in the same direction. On the back side of this rail, electromagnets having magnetic poles oriented in a direction perpendicular to the longitudinal direction are arranged at a predetermined pitch over the entire longitudinal direction, and the magnetic force of the 1.2 electromagnet on the exit side is increased. By turning on and off these No. 1 and 2 electromagnets, it is possible to cut and supply parts corresponding to the next process cycle, and the remaining electromagnets apply a ring counter-like magnetic field to the parts, making magnetic transport possible. The main points are as follows.

According to the present invention having such a configuration, the conveyance of parts on the way is made smooth by magnetic conveyance, and the cutting on the exit side is also made to correspond reliably to the cycle of the next process and improve the conveyance performance. It is possible to obtain the desired effect.

(BEST MODE FOR CARRYING OUT THE INVENTION) Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

FIGS. 4 and 5 are a longitudinal sectional view and a transverse sectional view showing the structure of an embodiment applied to a chute used for conveying parts such as screws made of magnetic material.

In the illustrated embodiment, an electromagnet 10 is provided to enable magnetic conveyance. That is, in the drawings, reference numeral 1 is a parts feeder, which is installed at a high level position.

This parts feeder 1 applies micro-vibrations in the circumferential direction to a substantially circular dish part, and inserts screws with washers 6, which are housed in an irregular state in the dish part, one inch at a time, in one direction from the outlet side by the inertia of the micro-vibrations. The chute 11 has a pair of rails 3.3, and as shown in FIG. They are arranged in parallel and facing each other at a constant interval, and the threaded part of the screw 6 is located between the rails 3 and 3, and the peripheral part of the washer 5 is located at the upper edge of the rail 3. Such a rail 3 has an inlet portion 12 connected to an outlet portion 13 of the parts feeder 1, the outlet portion 13 being at a low level conveyance position, and an outlet portion halfway It is inclined diagonally downward toward the part 13.The material of this rail 3 is made of a non-magnetic material such as brass, and the magnetic force received from the 111 stones 1o causes
C and others so that even when the electromagnet 1o is turned off, it will not take on the surname Ill due to residual magnetic force. On the back side of this rail 3, at least two electromagnets 10 having magnetic poles oriented in a direction perpendicular to the longitudinal direction are arranged along the longitudinal direction from the outlet part 13 side at a predetermined pitch. There is. That is, as shown in FIG. 5, the magnetic pole direction of the electromagnet 10 and the direction of the screw 6 match, and preferably the gap formed between the tip of the electromagnet 10 and the lower end of the screw 6 is set small. As a result, the screw 6 is attracted to the rail 3 via the washer 5 by receiving the magnetic force generated from the tip of the electromagnet 10. In this embodiment, the electromagnet 10 is disposed over the entire length of the rail 3. 1.2 electromagnet 10A on the exit part 13 side.

10B has a relatively large magnetic force due to an increase in the number of coil turns and coil current. These 1.2 electromagnets 10A,
By turning ON and OFF 10B, cutting and supply corresponding to the cycle of the next process can be performed. The remaining electromagnets 10 are used exclusively for magnetic conveyance, and are capable of applying a ring counter-like magnetic field to the screw 6 to be conveyed. The electromagnetic coils of each electromagnet 10 are configured to be excited in a circular manner by an electric circuit (not shown in detail), and one of the electromagnetic coils is turned on and off differently from the other coils.
Each time a signal is received, each signal changes to the next state. As a result, the screws 6 on the upstream side are sequentially attracted by the electromagnet 10 on the downstream side and move downstream.

Next, the effect will be explained.

First, when supplying cutting at a3 to the outlet part 13 of the magnetic chute 11, the first and second electromagnets 10A and 10B are turned ON,
OFF is performed every cycle of the next process. In other words, the first electromagnet 10A on the exit part 13 side is turned off, and the second electromagnet 10A is turned off.
When B is turned ON, the first electromagnet 10
The screw 6 at the tip that has been attracted by A is released from attraction, slides on the rail 3 by its own weight, and is supplied from the outlet 13 to the entrance of the next process. Therefore, at the position of the second electromagnet 10B, the screw 6 is in an attracted state due to its excitation, but when the screw 6 at the tip is detached from the outlet part 13, the first electromagnet 10A is turned on, contrary to the above case. The second electromagnet 10B is turned off. Then, the screw 6 that was attracted to the second electromagnet 10B is attracted to the first electromagnet 10A on the downstream side and moves, and is attracted at the position of the first electromagnet 10A. This process is performed during one cycle, and by repeating this process, the screws 6 can be cut out and supplied in accordance with the cycle of the next process.

Next, the next conveyance by the remaining electromagnets 10 will be explained. During one cycle of the next process, the remaining electromagnets 10 are sequentially turned off from the downstream side by an electric circuit (not shown).

When the ON switching is performed, the magnetic field is applied to the conveyor screw 6.
is applied to the ring counter. Zunawara, exit section 1
When the position of the second cutting electromagnet 10B on the third side is empty and the electromagnet 10B is turned on, the electromagnet 10 on the upstream side thereof is turned off. As a result, the screw 6, which has been attracted by the electromagnet 10, is released from attraction and, together with the falling slide due to its own weight, is drawn downstream by the electromagnet 10B on the downstream side and moves. When it becomes empty due to this movement, it becomes electromagnetic again? 510 roars ON,
A process similar to the above is performed with a delay between the electromagnet 10 on the upstream side. These processes move upstream one by one.

As a result, the screws 6 supplied from the parts feeder 10
are sequentially magnetically conveyed toward the exit portion 13 side in a state where they maintain their posture in the same direction.

As described above, according to this embodiment, in addition to improving the conveyance performance by magnetic conveyance and magnetic cutting, it also eliminates the need for restraint plays and mechanical separation means, which were indispensable in the past, and prevents damage caused by friction. The secondary effect of reducing sound (η) is 1q.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made. For example, although the shoe 1- has been described in which a pair of rails are opposed to each other with a predetermined gap formed therebetween, the present invention is not limited to this, and the shoe 1- may have a groove-shaped cross section. Further, the present invention can also be applied to the transportation of parts such as nuts that do not have a portion corresponding to the washer V.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional shoe 1~ that utilizes gravity, Fig. 2 is a longitudinal cross-sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a cross-sectional view of Fig. 1. ■-■ A cross-sectional view showing a cross-section along the curve, FIG. 4 is a cross-sectional view without showing the magnetic shoe 1 according to an embodiment of the present invention, and FIG.
It is a ``g cross-sectional view showing a cross section along the ria. 3... Rail, 6... Screw (parts) 10... Electromagnet, 10A... - 1st electromagnet, 10B... 2nd N magnet, 11... Magnetic chute. Applicant NEC Home Electronics Co., Ltd. Agent Patent Attorney Masu 1) Takeo No. 3rlA

Claims (1)

[Claims] 1. Parts such as bolts and screws made of magnetic material are sequentially conveyed in a lined state oriented in the same direction, and a J-ru made of non-magnetic material is conveyed diagonally downward toward the exit side. At least two electromagnets having magnetic poles oriented in a direction perpendicular to the longitudinal direction are arranged at a predetermined pitch along the longitudinal direction from the exit side on the back side of the rail. Tozuru magnetic chute. 2. The electromagnets are arranged along the entire length of the rail, and the magnetic force of the 1st and 2nd electromagnets on the exit side is increased, and these 1st and 2nd electromagnets are turned ON and OFF to perform cutting corresponding to the cycle of the next process. 2. The magnetic chute according to claim 1, wherein the remaining electromagnets apply a ring counter-like magnetic field to the components, thereby making it possible to carry them magnetically.