JPS639384Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a device for fitting a ring onto a headed pin.

(b) Prior Art Figure 1 shows an example of a headed pin and a ring. The headed pin 1 has a shaft portion 2, a head portion 3, and a ring fitting portion 4 at the neck. Ring 5 is an O-ring made of synthetic rubber. In assembling such parts, a device such as that described in Japanese Patent Publication No. 45-17953 can be used, for example. By the way, in the device disclosed in the above publication, the assembled headed pin and ring are lined up in a chute consisting of a pair of rails. Production efficiency will be improved if the pin-ring assembly that has just been assembled is immediately sent to its destination on the spot.

(c) Problems to be solved by the invention The invention provides a device that can automatically combine headed pins and rings and immediately send each pair of headed pins and rings after the combination to their destination. This is what I am trying to do.

(d) Means for solving the problem In this invention, the ring is held at the joint between a pair of jaws, the shaft of the headed pin is inserted into the ring by a transfer arm, and then the headed pin and the ring are moved together by a pusher. perfect fit. An air pressure feed path entrance is arranged below the jyo, a shutter connected to the jyo is placed here, and a compressed air pipe is connected thereto.

(e) Operation When the jaw is opened after the fitting work of the headed pin and ring is completed, the shutter also opens and the pin/ring combination falls into the air pressure passage entrance. When the jaw is closed again, the shutter also closes the air pressure passage entrance. A compressed air tube then blows out air and the pin-ring assembly is pumped to its destination.

(F) Example An example will be explained based on FIG. 2 and the following figures. The ring fitting device 10 has an immovable base 11, and a pair of jaws 12 and 13 are provided on the upper surface of the base 11 and are guided so as to be able to slide toward each other and away from each other. . Jiyo 1
2 and 13 are pulled in the approaching direction by a tension coil spring 14 connecting them together, as seen in FIG. Reference numeral 15 denotes a lever for opening and closing the jaws 12 and 13, and is supported by a shaft 16 protruding from the base 11 so as to be rotatable in a horizontal plane.
A roller 17 of the jaw 12 and a roller 18 of the jaw 13 are in contact with each other at symmetrical positions about the axis 16, and a rod 20 of an actuator (air cylinder) 19 is connected to one end. In FIG. 6, the state in which the jaws 12 and 13 are closest is shown by a solid line. When the rod 20 of the actuator 19 is extended, the lever 15 rotates counterclockwise and the roller 1
Push 7 and 18 in opposite directions. Therefore, Jiyo 1
2 and 13 will be forced open against the spring 14.

An upwardly directed depression 21 is formed at the joint between the jaws 12 and 13. This depression 21 is Jiyo 1
2 and 13, and receives the ring 5 sent from the parts feeder (not shown) via the chute 22. Reference numeral 23 denotes a rod that pushes one ring 5 from the end of the chute 22 into the recess 21 for each operation. Even when the jaws 12 and 13 are closest to each other, there is a gap 24 between them that is large enough to pass through the shaft part 2 of the headed pin 1 (including the part with a larger diameter at the entrance of the ring fitting part 4). It's open.

The base 11 is provided with an air pressure feeding path inlet 25 directly below the holding position of the ring 5, and a vertical air pressure feeding path outlet 26 is provided at a location away from the air pressure feeding path inlet 25. 26 to U
They are connected by a letter-shaped air pressure feed pipe 27. Air pressure pipe 2
Step 7: Draw a gentle curve without sharp bends. 28 is air pressure feed path entrance 2
5 is connected to the jaw 12, and when the jaws 12 and 13 approach, the air pressure feed path inlet 25 is closed as shown in Figures 2, 3, and 5, and When the jaws 12 and 13 are separated, the air pressure feeding path entrance 25 is opened. Reference numeral 29 designates an air jet port that communicates with the air pressure feed path entrance 25 at a position slightly below the shutter 28, and 30 designates a compressed air pipe connected to this.

31 is a transfer arm equipped with a chuck 32 that grasps the headed pin 1, and is capable of vertical and horizontal movement, and carries the headed pin 1 from the pin supply section and thrusts it into the ring 5 in the recess 21. It is something.
Reference numeral 33 in FIG. 3 is a pusher that pushes the headed pin 1 inserted into the ring 5 from above. 34 is a transport arm having a chuck 35, which is always on standby at the exit of the discharge port 26. Note that the chuck 35 is the headed pin 1.
It is designed to receive the shaft part 2 of the machine from below and then grasp it.

Next, the operation will be explained. First, as shown in Fig. 2, the ring 5 is prepared in the recess 21, and the transfer arm 3
1 brings the headed pin 1. Chuck 32 is
The shaft portion 2 is firmly held with the head 3 of the pin facing upwards. When the conveyance arm 31 comes directly above the ring 5, it turns downward and inserts the shaft part 2 of the pin 1 halfway into the ring 5. Then chuck 32 is pin 1
is released, and the transfer arm 31 follows the opposite course and returns to the pin supply section. Next, as shown in FIG. 3, the pusher 33 descends and pushes the pin 1, which was inserted halfway into the ring 5, into the ring 5 up to the neck. The pusher 33 then rises and the jaws 12, 13 open by the mechanism described above. Then, as shown in Figure 4,
The combination of the pin 1 and the ring 5 falls into the air pressure pipe 27 from the open air pressure pipe entrance 25 of the shutter 28 . Next, as shown in Figure 5, Jiyo 12 and 13
approaches again and the shutter 28 approaches the air pressure passage entrance 25.
is closed, and compressed air blows out from the compressed air pipe 30 to push the pin 1 toward the outlet 26 of the pressure feed path. The pin 1 is pushed into the chuck 35 with the upper and lower sides reversed and the shaft portion 2 facing upward. At this point, the chuck 35 closes and grips the shaft 2, and the transport arm 34 transports the combined body of the pin 1 and ring 5 to the next process. This completes one cycle of work.

(g) Effects of the invention According to the invention, it becomes possible to send one pair of headed pins and rings to the destination from the assembly side, greatly improving production efficiency.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a headed pin and a ring to be handled. FIG. 2 and subsequent figures show one embodiment of the device of the present invention, FIGS. 2 through 5 are sectional views in different operating states, and FIG. 6 is a plan view showing the opening/closing mechanism of the jaw. 1... Headed pin, 5... Ring, 12, 13...
...jiyo, 21...dent, 24...gap, 31...
...transport arm, 33... pusher, 19... actuator, 25... air pressure feed path entrance, 30...
compressed air pipe.

Claims (1)

[Claims for Utility Model Registration] A pair of jaws having a recess for holding a ring sent from a parts feeder and a gap for passing a headed pin shaft inserted into the ring at their joints. a transport arm that chucks the headed pin and inserts the pin shaft partway into the ring; and the arm releases the headed pin and, after detaching from it, inserts the remaining pin into the ring up to the neck. a pusher for pushing in, an actuator for opening the jyo and dropping the pin-ring combination into the air pressure feed path entrance below the jyo after the push is completed; a shutter that transitions to an open state and transitions to an open state to allow the pin-ring combination to fall into the air pressure passage inlet, and transitions to a closed state as the jacket transitions to a closed state; and a closed state of the shutter. A device for fitting a ring to a headed pin, which is equipped with a compressed air pipe that blows out air at the entrance of the air pressure path after the transition to the air pressure path.