JPH071360A - Snap ring inserter - Google Patents

Abstract

PURPOSE:To perform the setting of a snap ring onto a shaft body in an easy and efficient manner by installing a press-in hammer, having a hammer hole where the snap ring is accepted, in the tip of a body free of sliding motion up and down, and connecting this hammer to a driving mechanism operating with an air cylinder. CONSTITUTION:A press-in hammer 20, having a hammer hole 21 accepting a snap ring 4, is installed in the tip of a body 1 with a charging part 2 of this snap ring 4 and an inserting part 3 of a shaft body free of sliding motion up and down. In addition, this hammer 20 is connected to a driving mechanism 30 to be operated by an air cylinder 33. Incidentally in order to charge the snap ring 4 to a shaft body, first of all, an adjusting screw 14 of the inserting part 3 is operated, and a head part 16 is positioned aright. Next, a trigger 43 is pushed, opening a valve 44, and pressure air is taken into the cylinder 33 and a piston rod 34 is pushed out. In succession, a slider 40 and a pressure hammer 20 are lowered in order via an L-shaped lever 35, and then the snap ring 4 in the hammer hole 21 is pressed down, fitting it in a peripheral groove of the shaft body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snap ring inserter for preventing axial displacement of rotary shafts and movement of articles on the shaft.

[0002]

2. Description of the Related Art Generally, for rollers and rotating shafts,
An E-shaped retaining ring is attached to the circumferential groove provided at the end of the groove to prevent shaft shake and movement of the item on the shaft. As the snap ring described above, one having a shape in which a plurality of claw pieces are provided so as to project on the inner peripheral portion of a partially cut-out annular body is often used. Therefore, in order to attach the snap ring to the rotary shafts, conventionally, a holder having a spatula for holding the snap ring at the tip is used, and the snap rings are sandwiched one by one and pushed into the rotary shafts.

[0003]

As described above, the mounting of the retaining ring is carried out manually and is an extremely inefficient work, and the skilled worker is skilled in holding the retaining ring into the holder and pushing it into the rotating shafts. It took a lot of effort and caused a lot of fatigue on the palms and arms.

The present invention has been made in consideration of the above-mentioned conventional situation, and it is possible to easily attach a retaining ring to a rotary shaft by a simple operation of loading a large number of retaining rings and pushing a trigger. It is intended to provide a snap ring inserting machine that is made possible.

[0005]

The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. The present invention accommodates retaining rings 4 and 4, and A retaining ring loading portion 2 for pushing the retaining rings 4 and 4 from the tips,
At the tip of the main body 1 provided with the insertion hole 3 of the shaft body 50 for mounting the retaining ring 4 vertically side by side, a press-fitting hammer 20 having a vertically long hammer hole 21 for receiving one of the retaining rings 4 is vertically mounted. After being provided slidably, the press-fitting hammer 20 is pressed down by the action of pressure air from a position where the snap ring 4 is received to a position where the snap ring 4 is fitted to the shaft body 50 inserted into the insertion hole 3. It is characterized in that a hammer drive mechanism 30 for returning is provided.

[0006]

The present invention is constructed as described above, and in the normal state, as shown in FIGS. 1 to 3, the pressure hammer 20 is located at the upper portion, and the loaded snap rings 4 and 4 are Pushed by the pusher, the one stop ring 4 at the tip has a hammer hole 21
Accepted by. Then, when the trigger 43 is pushed, the air cylinder 33 is actuated, the slider 40 is pulled down through the L-shaped lever 35, and the pressure hammer 20 connected to this slides down together with the snap ring 4, The retaining ring 4 is pushed into the circumferential groove of the shaft body inserted into the insertion hole 3 and fitted therein. When the trigger 43 is released, the action of the spring 47 causes the slider 40 to move through the L-shaped lever 35.
Rises, the pressure hammer 20 is returned to its original position, and one of the retaining rings 4 is accepted again. The shaft body to which the retaining ring 4 is attached is extracted, a new shaft body is inserted, and the above operation is repeated.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. The present invention, as shown in FIGS. 1 to 3, has a horizontally long main body 1 in which a loading portion 2 for a snap ring and an insertion hole 3 for a shaft are provided in parallel vertically, and a tip end of the main body 1 It is provided with a press-fitting hammer 20 for the retaining ring provided and a hammer drive mechanism 30 provided in association with this.

The retaining ring loading portion 2 is formed in a groove shape having an open upper side, and the retaining ring 4, which is accommodated at the tip thereof, is accommodated at the tip thereof.
An inductor 5 for mounting and guiding 4 is fixedly provided, and a guide rod 6 is provided from the inductor 5 to the rear end portion of the snap ring loading portion 2, and the guide rod 6 is loosely fitted to the guide ring 6 to form a snap ring. The pressing elements 7 of 4 and 4 are provided by being biased toward the tip end by a spring 8 or the like. The pressing member 7 has a cover plate 10 slidably engaged with a guide groove 9 provided on the upper portion of the loading portion 2 and a hooking hole 12 of a locking body 11 provided at the rear portion of the loading portion 2. An anchor 13 is provided which can be engaged and disengaged.

Inside the insertion hole 3 of the shaft body, the head body 16 is movable in the lengthwise direction of the insertion hole 3 by being fixed to the tip of the adjustment rod 15 which is advanced and retracted by the operation of the adjustment screw 14 provided at the rear end thereof. The insertion depth of the shaft body is restricted by the position of the head body 16. Further, a plate-like pressure hammer 20 having the same thickness as the retaining ring 4 is arranged at the tip of the main body 1 in contact with the end face, and the pressure hammer 20 is held so as to be slidable in the vertical direction. A plate 17 is attached. Then, in the normal state of the pressure hammer 20, from the loading portion 2 to the insertion hole 3
A hammer hole 21 having a width that is longer than the diameter of the retaining ring 4 is provided, and the pressing plate 17 has a larger diameter than the retaining ring 4 at a position facing the insertion hole 3. A hole 18 is provided.

The hammer drive mechanism 30 is provided on the lower side of the main body 1. That is, the tip of the piston rod 34 of the air cylinder 33, whose base end is pivotally attached 32 to the bracket 31 protrudingly provided on the lower rear side of the main body 1, and the center is pivotally attached to the bracket 36.
One end of the L-shaped lever 35 is pivotally attached 38, and the other end of the L-shaped lever 35 is pivotally attached 41 to a slider 40 which can be moved up and down along a guide member 39 suspended from the main body 1. The slider 40 is connected to the pressure hammer 20 via a connecting member 23. And
An opening / closing valve 44 operated by a trigger 43 is provided in a grip portion 42 provided on the lower rear side of the main body 1, and the opening / closing valve 44 is connected to a hose 45 connected to a pressurized air source and a base of an air cylinder 33. An air supply pipe 46 is provided. Further, the piston rod 34 is constantly urged by the action of the spring 47 so as to be drawn into the air cylinder 33.

The machine of the present invention is constructed as described above,
In the state, as shown in FIGS. 1 to 3, the piston rod 34 is deeply inserted into the air cylinder 33 by the action of the spring 47, whereby the press-fitting hammer 20 is inserted through the L-shaped lever 35 and the slider 40. Is located on the upper side, and the front ends of the loading section 2 and the insertion hole 3 face the hammer hole 21 of the press-fitting hammer 20. When loading the retaining rings 4 and 4, as shown in FIG. 1, the anchor 13 is pulled backward to retract the pusher 7, and the anchor 13 is locked in the hooking hole 12 of the locking body 11. . As a result, the loading portion 2 located in front of the pressing element 7 is in a state in which the upper portion is opened. The retaining ring 4 is stacked in a required number and temporarily fixed with a tape or the like to form a block, which is then housed in the loading section 2 having an open upper part, and then the temporarily fixed tape or the like is removed. When the lock 13 is released, the pusher 7 pushes the loaded retaining rings 4 and 4 forward by the action of the spring 8, and the one frontmost retaining ring 4 is pressed into the press-fitting hammer 20. It enters into the hammer hole 21 of.

Next, in order to mount the retaining ring 4 on the shaft body 50, the adjusting screw 14 of the insertion hole 3 is operated to fix the head body 16 at a predetermined depth position. The depth position of the head body 16 makes the circumferential groove 51 for mounting the retaining ring of the shaft body 50 coincide with the hammer hole 21 of the pressure hammer 20. Then, insert the shaft 50 into the insertion hole 3
Insert it to the position where it hits 16 and press the trigger 43 to open the valve 44 and allow pressurized air to flow into the cylinder 33, causing the piston rod to move.
34 is extended. Thereby, as shown in FIGS. 4 and 5, the L-shaped lever 35 is interlocked to pull down the slider 40,
The pressure hammer 20 coupled to this is lowered, and the retaining ring 4 in the hammer hole 21 is depressed, so that the circumferential groove 51 of the retaining ring 4 shaft body 50 is depressed.
Will be fitted and attached to.

After the stop ring 4 is mounted, if the trigger 43 is returned, the supply of pressurized air is cut off, the exhaust hole of the cylinder 33 is opened, and the piston rod 34 is pulled back by the action of the spring 47. , The L-shaped lever 35 is interlocked, the slider 40 is pushed up again, and the press-fitting hammer 20 is raised and returned to its original position. Then, the hammer hole 21 of the press-fit hammer 20
The next stop ring 4 is pushed into and enters. Therefore, the shaft body 50 on which the retaining ring 4 is mounted is removed, a new shaft body 50 is inserted, and the same operation is repeated thereafter.

[0014]

As described above, according to the present invention,
A large number of retaining rings are loaded, and each of them is received by a pressure hammer and fitted to a shaft body inserted in an insertion hole. The operation of the pressure hammer can be performed by a drive mechanism utilizing pressure air. Therefore, the work of mounting the retaining ring can be easily and efficiently performed by simply inserting and removing the shaft body and operating the trigger of the valve that sends the compressed air without requiring special labor or skill. Also, the structure is simple and compact, and can be handled with one hand.

[Brief description of drawings]

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

FIG. 2 is an enlarged front view in which the same portion is cut away.

FIG. 3 is an enlarged side sectional view of the main part.

FIG. 4 is a partially cutaway enlarged side view showing a state when the snap ring is fitted.

FIG. 5 is an enlarged side sectional view of the main part.

[Explanation of symbols]

 1 Main body 2 Retaining ring loading section 3 Shaft insertion hole 4 Retaining ring 7 Pusher 11 Locking body 12 Hooking hole 13 Locker 14 Adjusting screw 15 Adjusting rod 16 Head 17 Rest plate 18 Through hole 20 Pressure hammer 21 Hammer Hole 30 Hammer drive mechanism 33 Air cylinder 34 Piston rod 35 L-shaped lever 37 Axis 39 Guide member 40 Slider 43 Trigger 44 Open / close valve 50 Shaft body

Claims (1)

[Claims] One end of the retaining ring is provided at the front end of the main body in which the retaining ring is accommodated and the retaining ring loading portion for pushing out the retaining ring from the front end and the insertion hole of the shaft body for mounting the retaining ring are arranged in parallel vertically. A press-fitting hammer with a vertically long hammer hole that accepts individual pieces is provided so that it can slide up and down, and the action of pressurized air causes the press-fitting hammer to snap a snap ring onto the shaft inserted into the insertion hole from the position where the snap ring was received. A snap ring inserting machine, characterized in that a hammer drive mechanism is provided for depressing to a fitting position and then returning.