JPH01288522A - Parts feeder - Google Patents

Abstract

PURPOSE:To make the movement of a holding section secure in a device which holds a part at the tip of a feeding rod and feeds the part by forming an engagement section of a feeder pipe, which engagement section opposing the holding section, and moving the part which has entered the engagement section to the holding section by means of an operation rod. CONSTITUTION:When a nut 10 reaches an engagement section 14 through a feeder pipe 7, engages with a stopper piece, and stops at a position opposite to a recess of a holding section 12, an operation rod 20 is extended with an air cylinder 17. This causes a positioning pin 21 to enter a threaded hole of the nut 10 and to enter the inside of the holding section 12 under the condition of the nut 10 being positioned, and to hold the nut 10 by means of a magnet. The nut 10 is fed to a specified destination by the retraction of the operation rod 20 to the original position and by the advance of a feeder rod 11. This arrangement makes the movement of parts to the holding section secure.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a device that holds a component at the tip of a supply rod and supplies it to a target location, and is suitable for use with projection nuts and distance pieces having welding protrusions. It is used in the field of supplying such parts.

(b) Conventional technology In the case where a component is held at the tip of the supply rod and the supply rod is stroked to the desired location, one component is held in advance at a predetermined location, and then the component is held at the tip of the supply rod as it moves forward. Either the parts are held at the tip of the supply rod and advanced as they are, or the parts transferred through the F1 parts supply pipe are moved directly to the tip of the supply rod.
What is held there is known. (c) Problems to be solved by the invention In the conventional example described above, there is a problem that parts are not accurately held at the tip of the supply rod. In the former case, if the standby position of one component deviates even slightly from the stroke line of the supply rod, accurate component holding will not be achieved; If the position is not set correctly relative to the tip of the supply rod, one part will not be held accurately.
Correctly setting the mutual positional relationship of 0 or more is quite difficult because the related members are structured to be able to move relative to each other. Holding parts in the strobe of the supply rod or moving them vigorously through the supply pipe will cause the parts to violently collide with the tip of the supply rod, which may cause the Fi parts to be repelled. The problem arises of being returned.

(ii) Means for solving the problem and its operation The present invention is provided to solve the above-mentioned problem.
Claim #4 is a system in which parts are held by a holding part at the tip of a supply rod and supplied to a target location, in which locking parts at the end of the supply pipe are installed at nine locations opposite to the holding part; The feature is that an actuating rod is installed that enters the resting part and moves the part from the locking part to the holding part, and after the part is positioned at the locking part at the end of the 4A candy tube, the tip of the supply rod is held. In addition, the invention of the second claim further ensures the retention of one part by placing a magnet at a position close to the holding part at the tip of the supply rod, and the magnet moves to the holding part. By having the same name, when the supply rod advances to a predetermined location, the magnet '1 is separated from the part and the part is supplied. It is released from the tip m of the rod.

(e) Embodiment FIG. 8 is a side view of the external appearance when the device of the present invention is applied to a FIFK spot welding machine, in which a steel plate component 3 is placed on the fixed electrode 1 with the guide bin 2 passing through it. has been done. Reference numeral 4 is a movable electrode.

The supply unit 5 includes a supply pipe 7. which is a part fMIiC welded to the bottom of the outer cylinder 6. It is comprised of an actuating device 9 that moves the air cylinder 81 component joined to the upper part of the outer cylinder 6 from the supply pipe 7 to the supply rod.

The details of the structure of the supply unit 5 will be explained with reference to FIGS. A holding portion 12 for receiving the nut 10 is formed at the tip, and the shape of this holding portion is a box-shaped recess with the tip side open, as shown in FIG. The supply rod 11 is housed within the outer cylinder 6.

The end of the supply pipe 7 connected to the piston rod 13 of the air cylinder 8 is provided with a locking part 14 that is open on one side, and the open side is in close proximity to the holding part 12 as shown in the figure. The stopping position of the nut 10 is determined by welding the stopper piece 15 as shown in FIG.
An actuating device 9 is connected through the actuating device 9. Various devices such as an electromagnetic solenoid can be used as the actuating device 9, but here an air cylinder 17 is used. It communicates with the hole 19 drilled in the piece 16 and is coaxial with the threaded hole of the nut 10 in the stop position. The rod is connected to the piston rod (not shown) of the air cylinder 17. A positioning pin 21 is fixed to the tip of the zero-explosion rod 20, which enters into the screw hole of the nut 10. 0 Various methods can be considered to hold the nut 10 in the holding fi 112 of the supply rod, such as attaching a thin leaf spring to the inner wall facing the holding 5120 and lightly clamping the nut 10 with this. Here, a magnet is used as the simplest method.

As the magnet, an electromagnet may be used to surround the supply rod 11 tube, but in this embodiment, a permanent magnet tube 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 placed at a position corresponding to the holding part 12.
is buried 0 supply rod 11 actor rod 24
The inner shaft 2502 has a layered structure, and a long hole 26 is opened in the stroke direction of the actuator rod 240, and the sliding body 22 is
The inner shaft 25 is integrated with the inner shaft 25.

, a long hole 28 in the stroker direction is also located above the supply rod 11.
is opened, and a regulating pin 29 fixed to the inner shaft 25 is protruding as shown in the figure.A coil spring filter 0 is interposed between the inner shaft 25 and the actuator rod 24, and its elasticity is applied to the regulating pin 29. 29 is received by hitting the lower end of the elongated hole 28. A elongated hole 31 is opened in the stroke direction at the bottom of the outer cylinder 6, and a locking piece 32 is inserted from the outside.
The drive device 3 attached to the outer surface of the outer cylinder 6 into which the
3 is realized by an air cylinder 34, and its piston rod 35 is connected to the retaining piece 32. The relative positions of the locking piece 32 and the regulating bottle 29 are arranged on one imaginary axis, and are set so that when the supply rod 11 makes a predetermined stroke, the two become close to each other.

In order to make the magnetic force of the magnet 23 act more strongly on the nut 10, the actuator rod 24, inner shaft 25, sliding body 22, etc. are preferably made of stainless steel. Figures 1 and 8
As shown in the figure, the holding portion 12 is arranged so that the entire supply unit 5 is inclined so as to open diagonally downward to the right, and therefore the actuating rod 20 is adapted to advance upward to the left. However, as is clear from the explanation of the operation below, it is also possible to install the supply unit 5 horizontally and move the operating rod 20 forward and backward according to the amount of vertical force, while also opening the holding part 12 directly below. If there is a possibility that the nut 10 will fly out of the holding part 12 due to inertia when the supply rod 11 stops, a protrusion 38 to prevent slippage as shown in FIG. 6 is provided, or a wall plate is installed as shown in FIG. 7. Is it appropriate to turn 39 to V? 0 In Figure 1, the nut 10 passes through the supply pipe 7 and reaches the locking part 14, and is caught by the stopper piece 15. It is placed at a position opposite to the concave MK of the holding part 12. When the actuating rod 20 or the air cylinder 17 is advanced at this point, the positioning pin 21 enters into the screw hole of the nut 10.

The nut 10 is pushed out as it is, enters the holding part 12, and is temporarily stopped by the magnet 23.

When only the operating rod 20 returns to its original position, the supply rod 11 moves forward with the output of the air cylinder 8. At this time, the magnet 23 and the holding part 12 (i.e., the nut
), the nut 10 moves forward without changing its relative position Fi, and when the nut 10 reaches the target position, the supply rod 11F
'i stop. At this point, the regulation bottle 29 has come close to the locking piece 62, and as the air cylinder 34 is contracted, the locking piece 32, the restriction bottle 29. Inner shaft 25. Bolt 27 and sliding body 2
After the steps in step 2, the magnet 25 is forcibly pulled up.
Natsu 10 will be separated from Natsu 10.
The attraction magnetic force will substantially disappear. The nut 10 is thus released from its holding position at the destination, for example in alignment with the guide pin 2 of FIG. 2. FIG. This is the case where 36 tons of magnets (permanent magnets) are embedded in the stopper piece 15.

Further, FIG. 5 shows a case where a magnet 57 that acts on the nut in the holding portion 12 is solidly attached to the tip of the inner shaft 25. According to the present invention, the holding portion at the tip of the supply rod Since it is placed in a positional relationship opposite to the rest part of the supply pipe and is provided on the actuating rod 1 that acts on the parts in the rest part,
Before feeding the part into the holding part of the supply rod, the part is once positioned, and then moved into the holding part by the actuating rod.

Therefore, by accurately setting the waiting position MV of the component with respect to the holding part and moving it with the actuating rod, the part can be reliably fed into the holding part.

Furthermore, since the component is brought close to the tip of the supply rod in a stationary state to perform a holding action, as described in the prior art section, it is possible to supply components with high operational reliability. Accuracy and retention can be achieved without any elastic phenomenon against parts.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG. 1 is a vertical side view, FIG. 2 is a +21-1ffi+ sectional view of FIG. 1, FIG. 3 is a three-dimensional view, FIG. 4 is a cross-sectional plan view, and FIG. 6 and 7 are longitudinal side views, respectively, and FIG. 8 is an external side view of the entire device. DESCRIPTION OF SYMBOLS 11... Supply rod, 12... Holding part, 10... Parts, 7... Supply pipe &14... Locking part, 20... Operating rod, 23, 37... Magnet.

Claims (1)

[Claims] 1. In a device in which a component is held by a holding portion at the tip of a supply rod and supplied to a target location, a locking portion at the end of the supply pipe is installed at a location opposite to the holding portion; 1. A component supply device comprising: an actuating rod that enters the stop portion and moves the component from the stop portion to the holding portion. 2. In a system in which parts are held by a holding part at the tip of a supply rod and supplied to a target location, a locking part at the end of the supply pipe is installed at a location opposite to the holding part, and the part is inserted into this locking part. 1. A component supply device, comprising: an actuating rod for moving a component from a locking portion to a holding portion; and a retractable magnet for attracting components near the holding portion at the tip of the supply rod.