JP3326489B2 - Component supply rod device and its supply method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field in which a component is held at a tip end of a supply rod and the component is inserted into a receiving hole of a counterpart member as an object. It is suitable for supplying parts to machine electrodes.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. Hei 4-270075 "Parts Supply Apparatus" is one of the prior arts which seems to be closest to the present invention. This is my invention, but hold the part at the tip of the supply rod, and when the supply rod advances and the part comes near the destination, the whole supply rod is moved and the part is It is inserted into the receiving hole of the counterpart member.

[0003]

According to the prior art described above, since the insertion of the component into the receiving hole is performed only by the movement of the entire supply rod, the movement amount of the supply rod becomes large. It was not good as a set of devices. In particular, at a position where the component is held at the distal end of the supply rod, the fact that the function to advance the component is not installed as a reliable one affects the moving amount of the supply rod.

[0004]

[Means for Solving the Problems and Their Functions] The present invention has been provided to solve the problems described above.
Claim 1 fixes a support plate to the tip of the supply rod,
Driving means to obtain forward and backward output is attached to the lower surface of the support plate of
And the holding member is driven by the driving means through a through hole formed in the support plate.
The holding member consists of a cup-shaped container.
An air hole is opened at the bottom thereof , and when the holding member is raised by the driving means, a part of the component held by the holding member enters the receiving hole of the other member. Then, when air is blown out of the air passage, the air pressure forces the part to further advance and completely enter the receiving hole. To reiterate, air is blown out from the air hole to the part seated on the bottom of the container, and the part advances as described above. Further, the components are seated on the bottom of the container in a state where the air holes are closed, and the pressure of the air flow path is reduced, so that the components are sucked into the bottom of the container. Then, when a part of the part enters the receiving hole, thereafter, the air is blown out by the above operation, and the part completely enters the receiving hole.

[0005] A second aspect of the present invention is that a support plate is provided at the tip of the supply rod.
Is fixed, and the air which can obtain the forward / backward output is
The cylinder is mounted, and the air hole is drilled in the support plate.
Through this piston rod
The holding member is composed of a cup-shaped container
The device is characterized in that an air hole is opened at the bottom thereof , and when the holding member is raised by the driving means, a part of the component held by the holding member is caused to enter the receiving hole of the counterpart member. Then, when air is blown out of the air passage, the air pressure forces the part to further advance and completely enter the receiving hole. To reiterate, air is blown out from the air hole to the part seated on the bottom of the container, and the part advances as described above. Further, the components are seated on the bottom of the container in a state where the air holes are closed, and the pressure of the air flow path is reduced, so that the components are sucked into the bottom of the container. Then, when a part of the part enters the receiving hole, thereafter, the air is blown out by the above operation, and the part completely enters the receiving hole.

According to a third aspect, a thick portion is formed in a part of the cylinder.
The supply rod made of pipe material is fitted here, and the cylinder is
Is firmly fixed to the cylinder and connected inside the supply rod.
The air hole through which opens in the cylinder,
Rod has a smaller diameter than the disk flange of the bolt.
The magnet is buried in the center of the tip of the piston rod,
The air gap between the cylinder and the piston rod
The device is characterized by temporarily locking the component in the holding member by the attraction of the magnet, and when a part of the component enters the receiving hole, air pressure is applied to the component, whereby the component is It departs from the attractive force of the magnet and completely enters the receiving hole.

According to a fourth aspect of the present invention, a support plate is provided at the tip of the supply rod.
Is fixed, and the drive which can obtain forward and backward output on the lower surface of this support plate
The means is attached, and the holding part is
Material is connected to the driving means, and the holding member is a cup-shaped container.
Is composed of vessels, Yes an air hole is opened at its bottom, to hold the component holding member are advanced the feed rod to the vicinity of the thrust bearing, the part is advanced into the receiving hole of the mating member by said driving means A component supply method in a component supply rod device characterized by causing a part of a component to enter, and then applying air pressure to the component to allow the component to completely enter and exit the receiving hole. Thus, the entry of a part of the part into the receiving hole, the complete entry of the part by air pressure, and the like are continuously realized.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the illustrated embodiments. In FIG. 1, the holding member and the driving means are illustrated in an enlarged manner, but the other portions are illustrated in a reduced scale. In the following embodiment, a bolt is supplied to an electrode of an electric resistance welding machine, and a component, that is, an iron bolt 1 is shown by a two-dot chain line, and a flange 3 is integrated with a shaft portion 2. A fixed electrode 5 is arranged coaxially with the movable electrode 4, and a steel plate 6 to which the bolt 1 is welded is placed on the fixed electrode 5. The supply rod 7 extends between the electrodes 4 and 5 from obliquely above, and is advanced and retracted by the air cylinder 8. A guide pipe 9 is connected to the air cylinder 8, and the component supply pipe 1 is provided.
0 and the guide tube 9 are welded via the connecting member 11. The connecting member 11 is firmly fixed to the stationary member 13 by the bracket 12. The component supply pipe 10 is fixed at a position facing a holding member described later when the supply rod 7 is most retracted.

The supply rod 7 is made of a pipe material,
The tip is firmly connected to the support plate 14, and is press-fitted into the thick portion 15 of the support plate 14 in the case shown. An air cylinder 16 serving as driving means is fixed to the lower surface of the support plate 14, and a piston rod 18 of the air cylinder 16 penetrates a through hole 17 formed in the support plate 14. The holding member 20 is connected via the. Therefore, the driving means 16 for moving the holding member 20 of the component 1 forward and backward is attached to the distal end of the supply rod 7. The driving means may be appropriately selected as long as it is a unit capable of obtaining forward / backward output such as an air cylinder or an electromagnetic solenoid as shown in the figure, and the case of an air cylinder is exemplified here. Reference numerals 21 and 22 indicate air hoses shown by two-dot chain lines.

The holding member 20 is formed of a cup-shaped container 23, and the above-mentioned screw portion 19 is screwed into a lower portion thereof so as to be integrated with the piston rod 18, and the opening portion is opened upward. 24, and an air hole 26 is opened in the bottom 25 of the container 23. The air hole 26 is formed in the bottom 2
5 is installed in the center of the air passage 2 communicating therewith.
7 is formed in the lower part of the container 23, an air hose 28 is connected to the air flow path 27, and the other end thereof is connected to the supply rod 7
Is connected to the joint pipe 29 of the first embodiment. Air hose 28
Are made of a flexible synthetic resin material such as vinyl chloride or polypropylene, and are arranged so as not to hinder the advance and retreat of the holding member 20. That is, the length is adjusted in such a manner that the length is adaptable to advance and retreat, and the piping posture is detoured on the near side or the back side of the paper surface of FIG. An air supply hose 30 is connected to the supply rod 7 and communicates with the inside of the supply rod 7, while the other is connected to an air control valve, not shown.

From the air passage 27, air for rapidly advancing the flange 3 seated on the bottom portion 25 is mainly jetted out. Pressure control such that the flange 3 is attracted to the bottom 25 is also possible.

The movable electrode 4 has a receiving hole 3 into which the shaft 2 enters.
1 is opened, and a magnet 32 is buried in the back to prevent the bolt 1 from falling off. The operation described below requires an electrically operated pneumatic control valve and an electric control circuit therefor, but these can be easily implemented by commonly employed equipment. Here, those examples are omitted.

The operation of the embodiment shown in FIG. 1 will be described. When the supply rod 7 is most retracted, the holding member 20 is in a state of waiting just below the component supply pipe 10 as shown by a two-dot chain line. The component supply pipe 10 extends from a parts feeder (not shown), and when the bolt 1 passing therethrough enters the container 23, the flange 3 of the component supply pipe 10 is moved to the bottom 2.
5 and the component holding by the holding member 20 is completed. At this time, when a vacuum is applied to the air flow path 27, the flange 3 is maintained in a sucked state. Then, the feed rod 7 is caused to advance by operation of the air cylinder 8, the shaft portion 2 ing coaxially with the receiving hole 31 of the movable electrode 4. Sand
That is, when the bolt 1 advances to the vicinity of the movable electrode 4 as the counterpart member, the advancement of the supply rod 7 is stopped. Then, when the holding member 20 is advanced by the operation of the air cylinder 16 and a part of the shaft portion 2 enters the receiving hole 31, the advance of the piston rod of the air cylinder 16 is stopped. Subsequently, when air is sent from the supply hose 30, air is jetted from the air flow path 27 to the flange 3 via the air hole 26, and the air pressure causes the shaft portion 2 to further enter the receiving hole 31, and 1 receiving hole 31
The inside of the bolt 1 is completely entered, and the bolt 1 is prevented from dropping off due to the attraction force of the magnet 32. Thereafter, the returning operation is performed in the reverse order, and the holding member 20 returns to the position shown by the two-dot chain line. Then, the movable electrode 4 is lowered while holding the bolt 1, and the bolt 1 is welded to the steel plate 6.

In the embodiment shown in FIG.
This is a case where the advance stroke of No. 6 is lengthened to some extent and a part of the shaft portion 2 enters the receiving hole 31.

FIG. 3 shows an embodiment in which the holding member 20 has a container-like cylinder 35 and the piston rod 1 projecting into the cylinder 35.
8, the cylinder 35 is the air cylinder 1
6 is firmly fixed. A thick portion 36 is formed in a part of the cylinder 35, and the supply rod 7 is fitted therein, and an air hole 37 communicating with the inside of the supply rod 7 is opened in the cylinder 35. The piston rod 18 has a smaller diameter than the disk-shaped flange 3, and a magnet 38 is embedded in the center of the tip of the piston rod 18. The air flow acts on the flange 3 from the gap between the cylinder 35 and the piston rod 18,
This gap serves as an air flow path 39.

The operation of this embodiment will be described. The bolt 1 that has entered the cylinder 35 from the component supply pipe 10 is seated on the upper surface of the piston rod 18 and is simultaneously attracted by the magnet 38 to be stably held. . Then, after the supply rod 7 advances and stops at a predetermined position, the piston rod 1
When a portion of the shaft portion 2 is advanced into the receiving hole 31 by the advance of the shaft 8, the compressed air is ejected from the air hole 37, and the flange 3 receiving the compressed air is forcibly separated from the magnet 38. That is, it completely enters the receiving hole 31.

The length of the cylinder 35 is set such that the flange 3 does not protrude from the upper end of the cylinder 35 even when the piston rod 18 advances. In other words, the presence of the flange 3 in the cylinder 35 allows the air flow to effectively act on the flange 3 and utilize the so-called dynamic pressure of the air flow.

[0018]

According to the present invention, a part of the component held by the holding member is once entered into the receiving hole of the counterpart member by the driving means, and the relative position between the component and the receiving hole is determined. After that, the parts are completely inserted into the receiving holes by air injection, so that the parts are securely inserted into the receiving holes, and the final approach is made by pneumatic pressure. A reliable supply of parts is achieved by the entry of parts. In particular, pneumatic pressure is applied to the components, which forces the components into the receiving holes, thus ensuring a reliable and reliable component supply. In this way, at the location of the holding member, since two functions, that is, the function of partially inserting the part and the function of advancing and detaching from the holding member, are realized, it is not necessary to move the supply rod itself as in the conventional example. . When the advancement function of the holding member is limited in quantity, the movement amount of the supply rod itself can be minimized.

Since the holding member is formed of a cup-shaped container, the components are seated on the bottom thereof, and the air holes are opened on the bottom, so that the components can be stably seated, and the air after the holding member has advanced can be obtained. Injection can also be properly applied to the component, and therefore, it is possible to actively and strongly advance the component. In addition, by suctioning the component from the air hole with a negative pressure, the holding power of the component is significantly enhanced,
Even if the equipment vibrates for any reason, the parts will not fall or shift. Further, by adopting the cup-shaped container, the components are housed in the container, so that the worst case in which the part falls down from the holding member can be avoided.

By incorporating the magnet in the holding member, the component is securely held, and the component can be inserted into the receiving hole of the counterpart member without any problem even if the component advances in a horizontal direction or a diagonally downward direction.

According to the invention of the method, the component supply is promoted in the above-described order, so that the component approaches the counterpart member by the advancement of the supply rod, and the component and the receiving hole of the counterpart member have a coaxial relationship. That the parts are advanced by the driving means to allow a part of the parts to enter the receiving hole,
Further, a series of operations such as applying air pressure to the component to force the component into and out of the receiving hole are performed, and therefore, the forced entry into the receiving hole from the positioning of the component can be completely performed. It is.

As shown in FIG. 3, when a piston rod is arranged in a cylinder and a magnet is installed therein, the formation of a container-like holding member and the advancement of parts by driving means are simple structures. realizable. By applying the air pressure to the outer periphery of the component flange, the propulsive force on the component is applied in a well-balanced manner, which is effective in maintaining a normal posture of the component during the transitional period of advance.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of the present invention.

FIG. 2 is a simple external side view showing another embodiment.

FIG. 3 is a partial vertical sectional side view showing another embodiment.

[Explanation of symbols]

7 supply rod 14 support plate 20 holding member 16 driving means 17 through hole 23 container 26 air hole 16 air cylinder 18 piston rod 1 part 27, 39 air flow path 23 container 25 bottom 26 air hole 35 cylinder 37 air hole 38 magnet

Claims (4)

(57) [Claims] 1. A support plate is fixed to a tip of a supply rod,
Driving means for obtaining forward / backward output is attached to the lower surface of this support plate.
The holding member is driven by the driver through the through-hole in the support plate.
Are connected to each other, and the holding member is a cup-shaped container.
A component supply rod device , wherein an air hole is opened at the bottom . 2. A support plate is fixed to the tip of the supply rod,
An air cylinder that can obtain forward and backward output is
Install the air cylinder pi
Ton rod is penetrated and this piston rod is
The holding member is composed of a cup-shaped container,
A component supply rod device , wherein an air hole is opened at a bottom portion . 3. A thick part is formed in a part of the cylinder, and
A supply rod made of ip material is fitted, and the cylinder is an air cylinder.
Air that is securely fixed to the inside of the supply rod
A hole opens in the cylinder, and the piston rod of the air cylinder
The diameter of the bolt is smaller than the disk-shaped flange, and the piston
A magnet is buried in the center of the tip of the rod,
A component supply rod device , wherein a gap between the rod and the component rod is an air flow path . 4. A support plate is fixed to the tip of the supply rod,
Driving means for obtaining forward / backward output is attached to the lower surface of this support plate.
The holding member is driven by the driver through the through-hole in the support plate.
Are connected to each other, and the holding member is a cup-shaped container.
It is, Yes in the air hole is opened at its bottom, to hold the component holding member are advanced the feed rod to the vicinity of the thrust bearing, the component parts and is advanced into the receiving hole of the mating member by the drive means one A component supply rod device, wherein the component is made to enter, and thereafter, the component is applied with air pressure so that the component completely enters and exits the receiving hole.