WO1991007339A1

WO1991007339A1 - Part feeding apparatus

Info

Publication number: WO1991007339A1
Application number: PCT/JP1989/001166
Authority: WO
Inventors: Yoshitaka Aoyama
Original assignee: Yoshitaka Aoyama
Priority date: 1989-11-15
Filing date: 1989-11-15
Publication date: 1991-05-30
Also published as: GB2244224B; GB2244224A; GB9112057D0

Abstract

A part feeding apparatus adapted to hold a part (10) in a retainer portion (12) at the free end section of a feed rod (11) and supply the part to an object position. A locking portion (14) at the free end of a feed pipe (7) is provided in a position opposed to the retainer portion (12), and an operating rod (20) adapted to enter the locking portion (14) and move the part (10) from the locking portion (14) to the retainer portion (12) is provided. The part (10) is positioned in the locking portion (14) and then moved to the retainer portion (12). Since a part attracting magnet (23) is provided retractably in the vicinity of the retainer portion (12) at the free end of the feed rod (11), the part retainability can be rendered more reliable.

Description

Akira Yanagi Parts supply device

Technical field

The present invention relates to a device for holding a component at the end of a supply port and supplying the component to a target location, and in the field of supplying a component such as a projection nut and a distance bead having a welding projection. Used. Background art

In the case where the leading end of the supply port is used to hold a part and the supplied port is to be moved to a target location, the part is made to wait at a predetermined location in advance, and the part is supplied to the supply port. During the forward movement of the supply port, it is held at the tip of the supply port and allowed to advance as it is, or the component transferred in the component supply pipe moves directly to the tip of the supply port and held there. Things are known.

In the above-described conventional example, there is a problem that parts are not accurately held at the leading end of the supply port. In the former case, if the standby position of the parts is slightly deviated from the stroke line of the supply port, accurate component holding cannot be achieved, and in the latter case, the parts supply is not performed. If the position of the pipe is not set correctly with respect to the end of the supply port, the part will not be held correctly. It is very difficult to correctly set the mutual positional relationship as described above because the related members have a structure capable of relative movement. Also, during the supply port stroke Holding the parts in the supply pipe or holding the parts that have moved vigorously through the supplied pipe may cause the parts to collide violently with the supply port pad tip. The problem of rebounding occurs. Disclosure of the invention

The present invention has been provided to solve the above-mentioned problem, and the invention of the first claim is to provide a holding part having a supplied mouth tip for holding a part and supplying the part to a target location. In the above, the locking section at the end of the supply pipe was installed at a location facing the holding section, and an operating port was provided to enter this locking section and move the parts from the locking section to the holding section. The present invention is characterized in that the parts are once positioned by the locking portion of the supply pipe から and then moved to the holding portion of the supply port tip 、, and the invention of claim 2 provides the supply ππ A magnet is installed at a location near the holding part at the tip of the magnet to further ensure the holding of parts, and the magnet can be retracted from the holding part, so that the supply rod moves to the specified location. Separates the magnet from the component when it comes out, and feeds the component to the end of the supply rod. Than is released from.

According to the present invention, the holding portion at the tip of the supply port and the locking portion of the supply pipe are in a positional relationship facing each other, and further, the working port that acts on the components of the locking portion 設け is provided. Therefore, the parts are once positioned before the parts are sent to the holding section of the supplied port, and then moved into the holding section by the working port. Therefore, by accurately setting the standby position of the part with respect to the holding part and moving it with the working port, it can be reliably fed into the holding part, Highly reliable parts supply can be achieved.

Furthermore, since the holding action is performed by bringing the parts close to the tip of the supply port in the stationary state, the resilient phenomena for the parts as described in the background section are completely accurate. Maintenance can be achieved. BRIEF DESCRIPTION OF THE FIGURES

Figure 1 is a vertical side view,

FIG. 2 is a cross-sectional view of FIG. 1 taken along (2)-(2).

Figure 3 is a three-dimensional view,

Figure 4 is a cross-sectional plan view,

Figure 5 is a vertical side view,

Figures 6 and 7 are longitudinal side views, respectively.

FIG. 8 is an external side view of the entire apparatus. BEST MODE FOR CARRYING OUT THE INVENTION FIG. 8 is an external side view of a case where the apparatus of the present invention is applied to a spot welding machine. Pan plate part 3 is placed. Reference numeral 4 denotes a movable electrode.

The supply unit 5 includes a supply pipe 7 for parts welded to the lower part of the outer cylinder 6, an air cylinder 8 joined to an upper part of the outer cylinder 6, and an actuator 9 for transferring parts from the supply pipe 7 to a supply port 9. The detailed structure of the supply unit 5 composed of the above components will be described with reference to FIGS. 1 to 3. The parts handled in this embodiment are the π-section nuts indicated by reference numeral 10. (Hereinafter referred to as a nut) A holding portion 12 for receiving the nut 10 is formed at a tip end of the mouth 11, and the shape of the holding portion is a box-shaped concave portion with an open end as shown in FIG. 3. . The supply port 11 is housed in the outside 6, and is connected to the piston rod 13 of the air cylinder 8. The end of the supply pipe 7 is provided with a locking portion 14 that is open on one side, and the open side is opposed to the holding portion 12 at a short distance as shown in the figure. By welding as shown in FIG. 2, the stop position of the nut 10 is set. An actuating device 9 is connected to the back of the supply pipe 7 through a distance bead 16. As the actuating device 9, a color * device such as an electromagnetic solenoid can be used, but the air cylinder 17 is used here. You are using The hole 18 drilled in the supply pipe 7 and the hole 19 drilled in the distance bead 16 communicate with each other and are coaxial with the screw hole of the nut 10 at the stop position. An operating rod 20 is fitted so as to be able to slide in both holes, 19 and 18, and this rod is connected to a piston rod (not shown) of the air cylinder 17 . A positioning bin 21 is fixed to the tip of the working port 20, and the positioning bin 21 enters the screw hole of the nut 10.

In order to hold the nut 10 in the holding portion 12 內 of the supply port, a thin leaf spring is attached to the inner wall facing the holding portion 12, and various methods such as a method of lightly clamping the nut 10 are used. However, the simplest method here is to use a magnet. As the magnet, an electromagnet may be used so as to surround the supplied rod 11, but in this embodiment, a permanent magnet is used.

A sliding body 22 is brought into close contact with the outer surface of the supply rod 11, and a magnet (permanent magnet) 23 is embedded at a position corresponding to the holding section 12. Supply port The rod 11 has a double structure of an outer rod 24 and an inner rod 25, and a hole 26 is formed in a stroke direction of the outer rod 24, and a bolt 27 passing through the hole 26 is formed. Thus, the sliding body 22 and the inner shaft 25 are integrated.

A long hole 28 in the stroke direction is also formed above the supply rod 11, and a regulating bin 29 fixed to the inner shaft 25 projects as shown in the figure. A coil spring 30 intervenes between the inner shaft 25 and the outer rod 24, and the elasticity thereof is received by the restriction bin 29 hitting the lower end of the elongated hole 28.

A long hole 31 is opened below the outer cylinder 6 in the stroke direction, and a locking piece 32 enters from the outside. The driving device 33 mounted on the outer surface of the outer cylinder 6 is realized by an air cylinder 34, and a screw port 35 thereof is connected to the locking piece 32. The relative positions of the locking pieces 32 and the regulating bins 29 are arranged on one virtual axis, and are set so as to be close to each other when the supplied mouth 11 makes a predetermined stroke. is there.

In order to make the magnetic force of the magnet 23 act more strongly on the nut 10, the outer rod 24, the inner shaft 25, the sliding member 22, and the like are preferably made of a stainless steel net. Also, in this embodiment, as shown in FIGS. 1 and 8, the holding unit 12 is arranged so that the entire supply unit 5 is inclined so as to open to the lower right of the diagonal. 20 is to advance to the upper left. However, as is clear from the following operation description, it is also possible to arrange the supply unit 5 in the horizontal direction, move the working port 20 up and down, and release the holding unit 12 immediately below. It is possible. In addition, supply rod 11 is stopped If there is a risk that the nut 10 may fly out of the holding part 12 due to inertia when it is set, a protrusion 38 for preventing slippage as shown in FIG. 6 may be provided, or a wall plate 39 as shown in FIG. It is appropriate to provide

FIG. 1 shows a state in which the nut 10 reaches the locking portion 14 through the lined pipe and is received by the stopper piece 15, and the nut 10 is inserted into the concave portion of the holding portion 12.对 They are located opposite each other. Now, when the operating rod 20 advances at the output of the air cylinder 17, the positioning bin 21 enters the screw hole の of the nut 10, and the nut 10 is pushed out as it is and enters the holding unit 12 、, and the magnet 10 At 23, temporary locking is performed. Thereafter, when only the working port 20 returns to the original position, the supply rod 11 advances by the output of the air-cylinder 8. At this time, the relative position between the magnet 23 and the holding portion 12 (that is, the nut 10) moves forward without change, and when the nut 10 reaches the target position, the supply port 11 stops. At this point, the regulating bin 29 has reached a position close to the locking piece 32, and the air cylinder 34 is contracted, whereby the locking piece 32, the regulating bin 29, the inner shaft 25, The magnet 23 is forcibly pulled up through the bolts 27 and the sliding body 22, and is separated from the nut 10, so that the magnetic attraction to the nut 10 is substantially eliminated. . Therefore, the nut 10 is released from the holding state at the destination, and matches the guide bin 2 in FIG. 8, for example.

FIG. 4 shows a case where a magnet (permanent magnet) 36 is buried in the strip 15 to further improve the static stability of the nut 10 in the locking portion 14. FIG. In this case, the magnet 37 acting on the nut of the holding portion 12 內 is fixed to the tip of the inner shaft 25.

Claims

The scope of the claims

(1) Supply port For holding a part in the holding part at the tip of the pad and filling it to the target location, install the locking part at the end of the supplied pipe at a location facing the holding part, and Component feeder, which is provided with an operating rod for moving the part from the locking part to the holding part by entering the

(2) Supply port For holding the part in the holding part at the tip of the pad and filling it to the target location, install the locking part at the end of the supplied pipe at a location facing the holding part, and To move the parts from the locking part to the holding part, and to provide a magnet for picking up parts near the holding part at the tip of the supply port in a retractable state. A component supply device.