JPH047847Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a split pin insertion and bending device that automatically inserts and bends a split pin.

[Prior Art] FIG. 9a is an explanatory diagram of a conventional split pin insertion and bending operation, and in the figure, a roughly horseshoe-shaped upper arm 1 is shown.
An inner shaft 12 is attached in a chord shape to both ends of the inner shaft, and cable nuts 14a and 14b are screwed into bolt parts at both ends of the inner shaft, and through holes are formed in the bolt parts, and the cable nuts 14a and 14b are screwed into the bolt parts at both ends of the inner shaft. A plurality of kerfs are formed in the radial direction on the end surface side, and the through hole and any of the kerfs are made to coincide with each other in the screwed state.

In this state, the operator inserts the cotter pin 16a from below into the through hole and the cut groove on one side (the side shown in FIG. Hold the head of the split pin 16a and use the hammer 18 held in your right hand to hit the foot of the split pin 16a toward the circumferential surface of the castle nut 14a to bend it.
9b, and insert the cotter pin 16b in the same way on the other side (the side shown in FIG. 9a), and bend it by hitting it with the hammer 18 to make it into an anchor shape. I was letting it happen.

[Problems that the invention aims to solve] However, since this conventional split pin insertion and bending work is done manually, it takes a considerable amount of time, the quality of the resulting product is not stable, and it does not require advanced technology. The problem was that the work was difficult to do because it required a lot of pressure, and it was not easy to rotate the workers.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention includes a split pin sorting and supplying device that selects and supplies split pins facing a predetermined direction, and a split pin sorting and supplying device that selects and supplies split pins facing a predetermined direction, and inserts the supplied split pins into a through hole of a workpiece. a cotter pin insertion device for inserting into the cotter pin, a cotter pin bending device for bending the inserted cotter pin, and a work clamp ejection device for clamping the workpiece and ejecting the workpiece after bending the cotter pin; and a control device that operates each of these devices as described above.

[Function] In the present invention, split pins facing a predetermined direction are sorted and supplied by the split pin sorting and feeding device, the split pins supplied by the split pin insertion device are inserted into the through holes of the workpiece, and the split pins are fed by the split pin bending device. The inserted cotter pin is bent, the workpiece is clamped by the workpiece clamp ejection device, and the workpiece with the cotter pin bent is ejected.

[Embodiment] A preferred embodiment of the present invention will be described with reference to FIGS. 1 to 8.

A rotary drive device 22 is coaxially attached to the sorting disk 20, a parts feeder 24 is provided adjacent to the sorting disk 20, a disk guide 26 is provided covering a part of the sorting disk 20, and a part feeder 24 is provided adjacent to the sorting disk 20. The tip of the air blower 30 is inserted into the concave portion 28 provided coaxially in the center, and a linear feeder 32 is provided together with a split pin rail 34 on the exit side of the sorting disk 20. It is formed as shown in the enlarged view of FIG. The sorting disk 20 is provided with its rotating shaft oriented horizontally, and a plurality of grooves 36 each having a semicircular cross section are formed in the radial direction on the end surface. The cross-sectional shape of the groove 36 is of such a size and shape that a split pin can fit therein. The rotational drive device 22 includes a motor 38 and a reducer 40 that reduces the rotation speed of the motor 38, and the sorting disk 20 is attached to the reducer 40. A spiral supply path 42 is formed in the parts feeder 24, and the outlet of the supply path 42 is the input side of the sorting disk 20. Disc guide 26
covers the exit quarter of the sorting disc 20, and the entry end is cut out diagonally.

The support shaft 44 has plate-shaped reversing arms 46a, 46b.
are attached to the upper and lower pairs, and the reversing arms 46a, 4
There are split pin rails 48a, 48b at the top of the tip of 6b.
are attached, and insertion cylinders 50a, 50b are attached to the upper part of the reversing arms 46a, 46b between the split pin frames 48a, 48b and the support shaft 44.
6a, 46b, and a reversing cylinder 52 for rotation in the direction of arrow a, thereby forming a split pin insertion device as also shown in the enlarged view of FIG. The support shaft 44 is installed perpendicularly to the frame 54. Reversing arms 46a, 46b
When rotated in the direction of arrow a, the reversing arm 46
The cotter pin rails 48a and 48b on the a and 46b are connected in a straight line with the cotter pin rail 34 on the linear feeder 32. One of the split pin rails 48a, 48b is attached to the other portion by a leaf spring 56 so that it can be bent in the direction of arrow b. In addition, the reversing arm 46
A swing motor 58, an eccentric cam 60 attached to the swing motor 58, and a cam follower 62 that rolls together with the eccentric cam 60 are attached to a.

Plate-shaped cotter pin bending jigs 66a and 66b are slidably attached to the upper surfaces of the pair of opposing bases 64a and 64b, respectively, and the cotter pin bending jigs 66
Temporary opening claws 68a, 68b and a pair of opening claws 70a, 70b, 72a, 72b are rotatably attached surrounding the upper and lower split pin bending jig 66.
a and 66b are connected by a U-shaped connecting member 74, and the connecting member 74 is connected to a split pin bending cylinder 76, thereby forming a split pin bending device. Split pin bending dies 78a, 78b are formed on the castle nuts 14a, 14b side of the split pin bending jigs 66a, 66b, and cam followers 80a, 80b are rotatably attached to the upper portions thereof. The temporary opening claws 68a, 68b are made of long plate-like bodies, one end of which is rotatably attached to the bases 64a, 64b, and the other end of which is attached to a split pin bending jig 66a,
Cattle nuts 14a, 14b beyond 66b
is directed towards. Recesses 82a, 82b and protrusions 84a, 84b are provided on the sides of the temporary opening claws 68a, 68b.
are formed by contacting with phosphor, and cam followers 80a, 80b are fitted into the recesses 82a, 82b.
The temporary opening claw 68a is moved in the direction of arrow c by the spring 98.
The opening claw 70a is biased in the direction of the spring 98.
The opening claw 72a is urged in the direction of arrow d by a spring 98, and the opening claw 72a is urged in the direction of arrow e by a spring 98.

The inner shaft 12 of the upper arm 10 is clamped by a clamp extrusion jig 86, and a pair of positioning pins 88a, 88b.
The clamp ejection jig 86 is connected to a clamp cylinder 90, which together form a work clamp ejection device. 92 is a work holding round bar that holds the ejected work.

Each device configured as described above is controlled by a control device (not shown) and operates as described below. In addition, prior to these operations, a cable nut 14a,
14b is fastened to the positioning pin 88.
a and 88b, turn it on, move the clamp cylinder 90 forward, and clamp the inner shaft 12.

When the sorting disk 20 is rotated in the direction of the arrow f by the motor 38 and the speed reducer 40, and split pins are sequentially supplied to the sorting disk 20 from the parts feeder 24, the supplied split pins fit into the grooves of the sorting disk 20. 36 and is lifted upwards as shown in FIG. If the cotter pin lifted upwards is inserted into the groove 36 normally, it will be rotated forward toward the exit side, but if the insertion state is abnormal, the cotter pin will be cut at the entry end of the disc guide 26. The chips are thrown into the parts feeder 24 due to the chips. In other words, when the cotter pin is inserted as shown in FIG. is the fifth
When inserted as shown in Figures b and c, the height of the protrusion is higher than the disc guide 26 (abnormal state), so the notch at the entry end of the disc guide 26 allows the parts feeder 24 to When the cotter pin that is swept away inwardly reaches the exit position, it is pushed by air from the air blow 30 from behind and is ejected onto the cotter pin rail 34. The split pins discharged by the split pin rail 34 are sent in the direction of arrow g by the linear feeder 32, and are supplied to the split pin rail 48a attached to the reversing arm 46a. Note that this operation is similarly performed in the lower split pin sorting and supplying device (not shown). The operation is controlled by turning the full work ON and OFF, and also turning the parts feeder 24, sorting disk 20, air blow 30, and linear feeder 32 ON and OFF.

When it is confirmed that the cotter pins are supplied to the cotter pin rails 48a and 48b attached to the reversing arms 46a and 46b, the reversing cylinder 52 moves in the direction of the arrow h.
direction, thereby causing the reversing arm 46a,
46b turns in the direction of arrow a together with the split pin rails 48a and 48b, and as shown in FIG. It stops at the center position. When the insertion cylinders 50a and 50b are driven in the direction of arrow i in this state, the split pin rail 48
The split pins in a and 48b are inserted into this insertion cylinder 50.
a, 50b, the castle nut 14a,
14b and the hole of the inner shaft 12. If the forward end is not confirmed within a certain period of time (the cotter pin is not completely inserted), the swing motor 58 rotates, and the eccentric cam 60 and cam follower 62 cause the reversing arms 46a and 46b to repeatedly swing, until the split pin is completely inserted. be inserted into the (See Figure 6). If the hole in the inner shaft 12 and the grooves in the castle nuts 14a and 14b are misaligned, a portion of the rail will escape outwards as shown in Figure 7, and the split pin will be completely inserted into the hole. be done.

When the cotter pin bending jigs 66a and 66b move forward in the direction of arrow j by the cotter pin bending cylinder 76, the protrusions 84a and 84b of the temporary opening claws 68a and 68b move the cotter pin bending jigs as shown in FIG. 8c. Tools 66a, 6
Cam followers 80a and 80 attached to 6b
b, the temporary opening claws 68a, 68b pivot in the direction of arrow k, and the longer leg of the cotter pin is opened slightly. When the split pin bending jigs 66a and 66b move further forward, the longer legs are bent at 90 by one of the opening claws 70a and 70b, as shown in FIG. 8d.
Then, the other opening claws 72a, 72
The short leg is 90 on the opposite side by b. It can be increased up to. As the cotter pin bending jigs 66a, 66b move further forward, both legs of the cotter pin are pressed against the castle nuts 14a, 14b by the cotter pin bending dies 78a, 78b, as shown in FIG. Can be bent. Split pin bending cylinder 7 at forward end
6 starts to move backward, the opening claws 70a, 70b, 72a, 72b and the temporary opening claws 68a, 68b are opened in the order in which they are opened by the spring 98 attached to the fulcrum 94 of each claw. Return to the original position in the opposite order. Insertion cylinders 50a, 50b
At this time, the arm also retreats at the same time, and then the reversing arm 46
A and 46b are also reversed and are supplied with split pins. Next, when the clamp cylinder 90 retreats,
The inner shaft 12 is removed from the positioning pins 88a and 88b by the clamp extrusion jig 86,
The workpiece is ejected onto the workpiece holding round bar 92.

[Effects of the invention] As explained above, the invention automatically inserts the cotter pin into the cotter pin hole of the workpiece and automatically bends it. Therefore, the product with good insertion and bending of the cotter pin can be produced without manual effort. The effect is that it can be obtained stably in a short period of time without any trouble.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of this invention, FIG. 2 is a perspective view of a split pin sorting and supplying device according to this invention, FIG. 3 is a perspective view of a split pin insertion device according to this invention, and FIG. FIG. 5 is an explanatory diagram of the sorting disk according to the invention, FIG. 5 is an explanatory diagram showing the split pin sorting state, FIG. 6 is an explanatory diagram of the split pin insertion device, and FIG. 7 is an explanatory diagram of the split pin insertion state. FIGS. 8a to 8f are explanatory diagrams illustrating the bending state of the split pin, and FIG. 9 is an explanatory diagram of a conventional device. 10... Atsupa arm, 12... Inner shaft, 14a, 14b... Cattle nut, 1
6a, 16b... split pin, 20... sorting disk, 2
4...Parts feeder, 26...Disc feeder, 30...Air blow, 32...Linear feeder, 34...Cotter pin rail, 36...Groove, 3
8...Motor, 40...Reducer, 46a, 46b
...Reversing arm, 48a, 48b...Cotter pin rail, 50a, 50b...Insertion cylinder, 52...
Reversing cylinder, 66a, 66b...Cotter pin bending jig, 68a, 68b...Temporary opening claw, 70a, 70
b...Opening claw, 72a, 72b...Opening claw, 76
...Cotter pin bending cylinder, 78a, 78b...Cotter pin bending mold, 80a, 80b...Cam follow,
86... Clamp extrusion jig, 90... Clamp cylinder, 92... Work holding round bar.

Claims (1)

[Scope of utility model registration request] A split pin sorting and supplying device that selects and supplies split pins facing a predetermined direction, a split pin insertion device that inserts the supplied split pins into a through hole of a workpiece, and a split pin bending device that bends the inserted split pins. , a work clamp ejection device for clamping the work and ejecting the work after bending the cotter pin, and a control device for operating each of these devices as described above. Cotter pin insertion bending device.