JPH01226623A - Device for feeding part - Google Patents

Abstract

PURPOSE:To avoid problems on spaces and peripheral equipments through the air transport of a part as well as to improve reliability by mounting a magnet onto a main rood in a projected state so as to hold the part while attracting it, and thereby arranging a guide plate between the magnet and the part. CONSTITUTION:When a feeding cylinder 6 is operated, both rods 2 and 3 are integrally advanced without being relatively displaced. When they come to a position where the thread hole of a nut 1 is consistent with a guide pin 12, advancement of the feeding rod 3 is suspended. Then, when the main rod 2 is slid to the right by the action of an auxiliary cylinder 8, only the main rod 2 is moved to the right while the nut 1 is left suspended at the front end face of an auxiliary rod 3, a magnet 5 is thereby separated from the nut 1 so that the attraction holding force of the nut 1 is canceled. The nut 1 is therefore lowered down so as to be in a condition that the nut coheres with the guide pin 12. And then, when a movable electrode 13 is lowered after both of the rods have been retreated, nut welding is thereby completed.

Description

DETAILED DESCRIPTION OF THE INVENTION A) Industrial Application Field The present invention relates to a parts supply device that transports parts almost horizontally and supplies them to a destination, and is applicable to parts that are in narrow spaces or where there are many impurities such as iron powder. There is a method that is more effective when frK is applied and also releases the holding of parts smoothly.

-) Prior art The prior art is my invention December 2, 1985.
Patent Application No. 1981-281752 (Japanese Unexamined Patent Publication No. 1987-281752) filed on 4th
-142085) "Parts supply device for spot welding machine"
and patent application 1986-57 filed on February 22, 1986.
No. 582 ``Parts supply device for spot welding machine''. These have a Ron-shaped guide member that slides back and forth in a guide groove, and is formed by the difference in length between the two guide members, so that a component is placed on a nine-component holding portion and moved.

? 1 Problems to be Solved by the Invention In the prior art described above, it is necessary to erect the long member forming the guide groove to the target location, so a certain amount of space must be secured, and peripheral equipment In some cases, only 1 filter is adopted in relation to pipes, wiring, etc.

Further, impurities such as iron powder enter the instep of the guide groove, and it takes time and effort to remove them. Another important point is that since the parts are simply placed on the parts holding section, there is a concern about the stability of holding them during transfer, and the instability of the transport part makes it difficult for the parts to reach the target location. There is a risk that you will not be able to fully enjoy your sexuality.

Furthermore, the present invention improves the smoothness when releasing the holding of parts. In other words, parts may have holes or some kind of uneven shape, but it must be possible to operate smoothly even with such a shape.

2) Means for solving the problem and its operation The present invention is provided to solve the above-mentioned problems.
A main rod and a sub-rod that move back and forth in an almost horizontal direction are combined in a slidable state, and the tip of the sub-rod is made to protrude more than the sub-rod. Attach a magnet that attracts and holds parts,
A guide plate is formed between the magnet and the component and is integral with the sub-rod, and the relative sliding of the sub-rod separates the magnet from the component and releases the suction/holding of the component. By moving the magnet to a close distance to the target location while it is being held, and then moving the magnet to a non-active position, the suction and retention of the component is released and the supply to the target location is completed. Since a guide plate is interposed between the magnet and the component, the magnet will not rub against the component and the smoothness during operation will not be impaired.

(E) Embodiments First, the embodiments shown in FIGS. 1 to 7 will be described. The component in this embodiment is a projection nut having a welding protrusion as indicated by the reference numeral 1. The main rod 2 and the auxiliary rod 5 are slidably assembled together, arranged in a substantially horizontal orientation, and held by a frame member 4 that functions as a guide. The tips of both rods are longer than the main rod 2 and the sub rods S and P are longer than the main rod 2.
A magnet (permanent magnet) 5 is embedded in the protruding part. The upper part of the sub rod 3 extends in the form of a plate, thereby forming a guide plate P between the nut 1 and the magnet 5.

A feed cylinder 6 fixed on a stationary member is suitably operated by compressed air, the piston rod 7 of which is connected to the secondary rod 3.
It is combined with. It is also suitable to have a nine auxiliary cylinder 8 fixed on the auxiliary rod 5 and actuated by compressed air, the piston rod 9 of which is connected to the main rod 2. The auxiliary cylinder 8 plays the role of retracting the main rod 2, and an alternative to this is an electromagnetic cylinder or the like.

In this embodiment, a nut 1 is spot-welded to a mating sheet metal part 10, and the sheet metal part 10 is placed on a fixed electrode 11 with a guide pin 12 passing through it.
A movable electrode 13 is installed coaxially with the fixed electrode 11.

In Fig. 1, the nut 1 is connected to the magnet 5 via the guide plate P.
The rods 2 and 3 are held by suction and held in close contact with the front end surface of the sub-rod S, and when the feed cylinder 6 is operated here, the rods 2 and 3 move forward as one without relative displacement. When the threaded hole of the nut 1 and the guide pin 12 come to a matching position, the forward movement of the feeding rod 3 is stopped and the state shown in FIG. 3 is reached. Next, auxiliary cylinder 8
When the main rod 2 is slid to the right by the operation of
is separated from the nut 1, and the attraction and holding force of the nut 1 is eliminated, so that the nut 1 descends and aligns with the guide pin 12, as shown in FIG.

Thereafter, when both rods retreat and the movable electrode 15 descends, the nut welding is completed.

To explain the means for attracting and holding the nut 1 to the magnet 5, the front ends of the side wall plates 15, 16 of the chute 14, which guides the nut 1 and has a U-shaped cross section, are cut out to form passage portions 17, 18 for both rods. However, a stopper plate 19 is installed at the front end of the shooter 14.

As shown in FIGS. 5 and 7, bearing pieces 20.21 are fixed to the lower part of the shooter 14, and these bearing pieces 20.21
The opening/closing plate 23 is fixed to a pivot 22 attached to the.

A helical coil spring (not shown) is attached to the pivot shaft 22, and its elasticity maintains the closed state as shown by the solid line in FIG. 7, and the nut 1 is pushed out. During the transition period, the opening/closing plate 2S is pushed open as shown by the two-dot chain line in FIG.

Another magnet 24 fitted into the stopper plate 19 is used to bring the nut that has moved inside the shooter 14 into close contact with the stopper plate 19 for positioning. It serves to prevent the nut 1 from slipping until it comes into close contact with the nut 1.

That is, when both rods 2.5 move forward to the left from the state shown in FIG. 7, the nut 1 will not come into close contact with the front end surface of the sub-rod 3, but will be pushed to the left by the magnet 5 of the main rod. However, the opening/closing plate 2!1 and the magnet 2
4's restraint (-temporal locking function) causes the secondary rod 5 to
The nut 1 remains at approximately that position until the front end surface of the nut 1 touches the nut 1.

In the embodiment described above, the parts, that is, the nuts are Ffr.
This is a type in which the attraction and holding force of the magnet is released after the nut has moved to a predetermined position, but the one in Fig. 8 is a type in which the holding force is released when the nut comes just before the predetermined position. belongs to. That is, the main rod 2 and the guide plate P
As shown in the figure, a compression coil spring 25 is interposed between the main rod 2 and the auxiliary rod 3 to apply elasticity in the pushing direction, and the regulating pin 26 fixed to the auxiliary rod 3 moves the main rod 2
By contacting the right end of the long hole 27, the elasticity of the spring 25 is received. Further, the stopper pier 28 fixed to the main rod 2 is designed to come into contact with the frame member 4 when both rods move forward.

When the feed cylinder 6 is activated from the state shown in FIG. 8, the sub-rod 3 carries the main rod 2 and moves forward to the left while holding the nut 1 by suction, and when the nut 1 comes close to the target location,
The main rod 2 stops moving forward because the stopper pin 28 is aligned with the frame member 4, but the sub rod 3 is moved against the regulating pin 2.
6 moves inside the elongated hole 27, the nut 1 moves through the guide plate P.
It is pushed out while sliding. At this time, the nut 1 moves away from the magnet 5 as described above, and the magnet 5 can move smoothly without rubbing against the nut 1.

The embodiments shown in FIGS. 9 and 10 are modified examples of the guide plate, and the locations where the magnets are installed are also different from the previous ones. In other words, the main rod 2 is on the side surface of the sub rod 3!
! The magnets 5 are placed in contact with each other, and the guide plate P is also placed vertically as shown.

As is clear from FIG. 9, the upper plate 29 is installed in a direction perpendicular to the guide plate P. First, the reference numeral SO in FIG. 10 is a shooter having a U-shaped cross section.

The one shown in FIG. 11 is similar to those shown in FIGS. 9 and 10, but the front plate 51 is installed as shown in the figure to improve the ability to hold parts, making it round.

The embodiment shown in FIG. 12 exemplifies the drive structure of the magnet 5 in the type shown in FIGS. 9 and 10.

The auxiliary rod 5 has a hollow structure as shown in the figure, and an operating rod 52 is slidably inserted therein. The main rod 2 is short as shown in the figure, and is connected to the operating rod 32 by a port 53, and this bolt is slidably passed through a long hole 34 opened in the stroke direction of the sub rod 5. . The initial position of the magnet 5 is set by a compression coil spring 55 inserted into the sub rod S. The sub rod 3 has a long hole 36 different from the previous one, and is an operating rod! A regulating pin 67 fixed to I2 passes through this elongated hole 56 and projects to the outside.

The structure described above is inserted into the outer cylinder 58 with a gap, the air cylinder 39 is connected to one end of the cylinder, and the tip of the main/gekiga rod protrudes from the other end.
A piston rod 40 of the air cylinder 39 is connected to the auxiliary rod 3. A drive device 41 is attached to the outer side of the outer cylinder 58 in order to forcibly move the magnet 5 back when the main/graphic rods 2 and 5 advance to a predetermined position. Although a 4-magnetic solenoid can be used as the drive device, an air cylinder 42 is used here, and a locking piece 44 is fixed to the tip of the piston rod 45, and the outer cylinder 38
A locking piece 45 projects into the outer rlIi 38 through a long hole 45 opened in the stroke direction. The locking piece 44 and the regulating pin 57 face each other in a nine-position relationship, and the secondary rod 3
When the air cylinder 42 contracts after being expanded, the locking piece 44 can push back the regulating pin S7.

FIG. 13 shows an embodiment in which a bolt 47 having seven flange 46 is handled, and FIG. 14 shows an example in which the main rod 2 and the sub rod S are vertically reversed and the bolt 4B held by suction is attached to the mating part 490. This is the case where it is inserted into the hole 50 yen. Therefore, although not shown, both rods (are not shown in the drawings) can be moved upward in parallel from the state shown in FIG. 14.
1 structure is connected, and the counterpart component 49 is also positioned by some kind of support mechanism (not shown).

The reference numeral 51 in FIG. 15 is a rectangular sheet metal part having flanges 52, 55 on both sides. When handling such a part, the main rod 2 and sub rod 5 as shown in FIG.
In order to improve the holding stability of the sheet metal part 51, the number of magnets 5 is increased by two and nine dimensions.

In addition, it is appropriate that the main rod and the main rod are made of stainless steel, and the movement of both rods is not limited to advancing and retracting motions, but may also be made to perform swing motions.

(f) Effects According to the present invention, a magnet is attached to the main rod in a protruding state so that parts can be attracted and held there. Therefore, parts can be transported in the air, unlike the conventional method. There is no need to provide a special guide groove, and problems related to space and peripheral equipment can be avoided. Further, since no guide groove is required, troublesome maintenance of the inside of the groove is eliminated. When both rods move forward, the parts are held by suction, so the holding stability during transfer is good and there is no chance of the parts falling inadvertently. Furthermore, when the component comes close to a predetermined location, the magnet is separated from the component by the relative sliding of the main and Gekiga Rondo, so the holding force of the component can be reliably eliminated. This makes it possible to reliably remove all four parts. Also, one important effect for non-captives is that a guide plate is interposed between the magnet and the part, so even if the part has some unevenness, the magnet will fit smoothly with the guide plate. 1 movement, and the separation movement of the magnet can be performed smoothly.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is an overall side view;
Figure g2 is a cross-sectional view of Figure 1, Figures S and 4 are partial side views, Figure 5 is a partial plan view, and Figure 6 is a partial side view.
The figure is a three-dimensional view of the chute end, and Figure 7 is (7) in Figure 5.
-(7) Cross-sectional view, and FIG. 8 is a side view showing another embodiment!
! Figure 9 is a three-dimensional view, Figure 10 is a partial cross-sectional plan view, and Figure 1 is a three-dimensional view.
1 is a three-dimensional view, FIG. 12 is a cross-sectional plan view, FIGS. 13 and 14 are side views, FIG. 15 is a three-dimensional view of other parts, and FIG. 16 is a side view. 2...Main rod, 3-Secondary rod, 5...Magnet, P...Guide plate, L12.48.51...Parts. Participants: Yoshiko Aoyama

Claims (1)

[Claims] A main rod and a sub-rod that move back and forth in an almost horizontal direction are combined in a slidable state, and the tips of both rods are such that the main rod protrudes more than the sub-rod, and the protruding part of the main rod is Attach a magnet that attracts and holds the parts,
A component feeding device characterized in that a guide plate integral with a sub-rod is formed between the magnet and the component, and relative sliding of both rods separates the magnet from the component and releases the component from being attracted and held. .