JPH0829461B2 - A device that attaches washers to both ends of a holed component - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for assembling washers on both end faces of a holed component such as a pinion gear.

2. Description of the Related Art Conventional technology and its problems One of the assembling steps of a pinion gear used in a transmission of an automobile or the like is an operation of assembling thrust washers on both end surfaces thereof.

Conventionally, the washer is assembled by placing the pinion gear horizontally and stacking the washers on the pinion gear.

Usually, a plurality of needles are attached to the pinion gear before the washer is attached, and a dummy shaft is passed inside the needles. For this reason, when assembling the washer with the pinion gear horizontal as described above, it is necessary to move the pinion gear together with the positioning jig such as the needle so as to prevent the needle and the like from falling, and to assemble the washer. Therefore, the cost of jigs is high, a large number of jigs are required, and the collection of jigs becomes complicated,
The device becomes large-scale. Also, it is very difficult to assemble washers from the upper and lower sides to a horizontally placed pinion gear, and in order to assemble the washer on the lower surface, the pinion gear must be inverted, and it is complicated to consider dropping the needle. The device becomes unstable and its operation becomes unstable. It is possible to install a washer on the lower surface of the pinion gear before assembling the needle or the like, but this makes the assembly of the needle or the like complicated and unstable.

Put the pinion gear vertically so that the dummy shaft is horizontal, and assemble a washer on one side at one assembly station, then move it and assemble a washer on the opposite side at another assembly station. Can also be considered.

However, in this case, two or more assembling stations are required. Then, since the pinion gear is conveyed from the first station to the second station with the washer on one side, it is unstable. That is, when transporting the pinion gear, it is conceivable to guide both ends of the dummy shaft with guides, but since the dummy shaft has a length for receiving washers on both sides, washers and needles are not provided between the guides. It moves laterally by the gap of the part where the washer is not attached yet and induces the needle to pop out. Since this needs to be corrected by the mounting mechanism of the second station, the device becomes complicated.

An object of the present invention is to provide a device for assembling washers on both end surfaces of a component with holes, which solves the above problems.

Means for Solving the Problems A device according to the present invention is a device for mounting washers on both end faces of a holed component by fitting washers on both ends of the shaft passed through the hole of the holed component, Carrying-in means for positioning the holed part at a predetermined mounting position in a horizontal state, washer storage / supply means, and both ends of the shaft of the holed part in the mounting position of the washer supplied by the storage / supply means It is equipped with an assembling means that fits the parts simultaneously and side by side, and an unloading means for unloading the perforated part to which the washer is assembled, so that the storage and supply means fits inside the washer and guides its inner diameter. A washer guide rod disposed substantially vertically downward on the inner surface of the washer, and the assembling means is arranged to guide the inner diameter of the washer and to move axially in a substantially horizontal state. , Almost A washer pusher arranged so as to be able to move in the axial direction with respect to the washer guide in a flat state, and a swiveling means for swiveling the washer guide into a substantially vertically upward washer receiving state and a substantially horizontal assembled state, When the washer guide of the assembling means is swung to the washer receiving state, the lower end surface of the washer guide rod of the storage and supply means is close to the upper end surface of the washer guide, and the washer is guided by the inner diameter of the washer guide rod. Is transferred from the washer guide to the washer guide, and the washer guide of the assembling means is swung to the assembled state, the end face of the washer guide comes close to the end face of the shaft of the holed component,
The washer pusher moves so that the washer is guided through the inner diameter and is transferred from the washer guide to the shaft of the holed component.

In the state where the washer guide of the assembling means is swung to the washer receiving state, the lower end surface of the washer guide rod of the storage and supply means is close to the upper end surface of the washer guide, and the washer is guided by the inner diameter of the washer guide rod. Securely transferred to the washer guide. Then, after the washer guide of the assembling means is swung to the assembled state, the end face of the washer guide comes close to the end face of the shaft of the holed component, the washer pusher moves, and the washer is guided along the inner diameter of the washer. It is securely transferred from the guide to the shaft of the holed part. Since the washer guide rod is moved from the washer guide rods that are in close proximity to each other to the washer guide, and further from the washer guide to the shaft, the washer guides its inner diameter, so that it is not necessary to consider differences in outer diameter dimensions and tolerances. , Washers can be securely transferred and assembled. Since the washer is assembled while the shaft is almost horizontal, the shaft does not drop and it is not necessary to move it with the jig attached, so the device does not become large. Also, since the washers are assembled on both sides of the pinion gear at one assembly position,
There is no problem such as movement of the needle during transportation.

Practical Examples The drawings show an example of an assembling device that attaches washers to both end faces of a pinion gear.

Pinion gear (10) hole (10
As shown in detail in FIGS. 10 and 11, a) has a large number of needles (11) assembled therein, and a hollow dummy shaft (12) is inserted inside the needles (11). Has been done. Tapered portions (13a) are formed at both ends of the hole (13) of the dummy shaft (12). Then, by this assembling device, as shown in FIG. 11, two washers (26) and (27) are attached to both end faces of the pinion gear (10). Of the two washers (26) and (27), the one that is assembled to the pinion gear (10) side is the inner washer (26), and the one that is assembled to the outside of this inner washer (26) is the outer washer (27). ).

The assembling device mainly comprises a carry-in chute (14), a positioning lift (15), two sets of washer storage and supply device (16),
Two sets of washer assembly heads (17) and unloading chutes (1
8).

The carry-in chute (14) has a pinion gear (10) on which the needle (11) and dummy shaft (12) have been assembled.
To feed the lift (15), which is in the shape of a groove, on each side of which a horizontal dummy shaft (1
Guides (19) for guiding both ends of 2) are provided.

The lift (15) is for positioning the pinion gear (10) supplied from the carry-in chute (14) at a predetermined assembly position. The lift body (20) is fixed to the upper end of a rod (21a) of a vertically upward lifting cylinder (21), and a triangular recess (22) for holding a pinion gear (10) is formed at the upper end thereof. . Opening / closing cylinders (23) are fixed upward on both sides of the lift body (20). The upper and lower ends of the rod (23a) of each cylinder (23) are lifted along both sides of the body (20). Side plate (24)
Are fixed respectively. And each side plate (24)
The closed position where it rises above the lift body (20) and closes the end surface of the dummy shaft (12) of the pinion gear (10) on the body (20), and it descends near the upper end of the lift body (20) and the dummy shaft ( It can be switched to the open position where the end face of 12) is exposed. Further, in the lift body (20), as shown by the solid line in FIGS. 1 and 2, the recess (22) has a carry-in chute (1).
Ascend and descend between the lower end position following the end of 4) and the assembly position following the start end of the carry-out chute (18) as shown by the chain line in FIG. The pinion gear (10) supplied from the carry-in chute (14) to the recess (23) is provided on the opposite side of the recess (22) of the lift body (20) at the lower end position from the carry-in chute (14).
A stopper (25) is provided to prevent the falling of the.

The two sets of washer storage / supply devices (16) are for supplying two washers (26) (27) to the corresponding assembling head (17), and are arranged right above the lift (15). Further, they are provided at both ends of the horizontal plate (28) and are located at positions symmetrical to each other with respect to the carry-in chute (14) and the carry-out chute (18). The washer storage / supply device (16) of each set includes two washer magazines (29) (30) symmetrical with respect to a vertical plane passing through the axis of the pinion gear (10) on the lift body (20). Each magazine (29) (30) has a washer storage rod (31) (32) whose upper end is attached to the horizontal plate (28), and a guide cylinder that surrounds the lower and lower portions of the rod (31) (32). (3
It consists of 3) and (34). A large number of inner washers (26) are passed around the storage rod (31) of the first magazine (29) and inside the guide tube (33), and the storage rod (3) of the second magazine (30) is inserted.
A large number of outer washers (27) are passed around the periphery of (2) and the inside of the guide tube (34). Immediately below each magazine (29) (30), a quadrant disc (35) (36) is arranged so that it can rotate about a vertical axis (37) (38) passing through the center of the circle. Has been done. The first rotating plate (35) has an inner washer (26),
The second rotary plate (36) is for taking out the outer washers (27) one by one from the corresponding magazines (29) (30). Washer holding recesses (39) (40) reaching the side edges are formed on the upper surface of one side edge of the rotary plates (35) (36). The width of the recesses (39) (40) is slightly larger than the outer diameter of the washers (26) (27), and the closed end thereof is formed in a semicircular shape. The depth of the recesses (39) (40) is slightly shallower than the thickness of the washers (26) (27), and the washers (26) ( Notches (30a) (40a) each having a width slightly larger than the inner diameter of 27) are formed. The rotating plates (35) (36) are always close to the lower surfaces of the guide tubes (33) (34) of the magazines (29) (30), and the recesses (39) (4).
0) is right under the magazines (29) (30) and the recesses (39) (40) are in the middle of the rotation center shafts (37) (38) of the two rotating plates (35) (36). It rotates about 90 degrees between the washer supply state and the washer supply position. In FIG. 3, the washer removal state of the first rotary plate (35) is shown by a solid line, and the washer supply state is shown by a chain line. The washer removal state of the second rotary plate (36) is shown by a chain line, and the washer supply state is shown. Each is shown by a solid line. A washer eye rod (42) that is moved up and down by a cylinder (41) is arranged directly below the washer supply position of each washer storage and supply device (16). The diameter of the guide rod (42) is equal to the outer diameter of the dummy shaft (12).

The carry-out chute (18) is for carrying out the pinion gear (10) on which the washers (26) (27) have been assembled, and has a shape similar to that of the carry-in chute (14), and has both sides on its both sides. , A guide (43) is formed. The carry-out chute (18) is provided with a movable stopper (44) and a washer assembly confirmation checker (45). In addition, the carry-out chute (1
At the end of 8), a gate (46) for separating good products from bad products
Is provided. In addition, the pinion gear (10) on which the washers (26) (27) have been assembled is lifted on the opposite side of the carry-out chute (18) with respect to the recess (22) of the lift body (20) at the assembly position. A unloading pusher (47) is provided to transfer from the main body (20) to the unloading chute (18).

The washer mounting head (17) is for mounting two washers (26) and (27) on both ends of the dummy shaft (12) of the pinion gear (10) at the washer mounting position. The washer storage / supply device (16) of each set is arranged right below the washer supply position on both sides of the position, and is configured as follows.

A swivel shaft (51) rotated by an air cylinder (50) is attached to a bracket (49) fixed to a frame (48) of the assembling device, and the cylinder (52) is attached to the tip of the swivel shaft (51). ) Is mounted at a right angle. A hollow piston rod (54) having a piston (53) formed in an intermediate portion penetrates the cylinder (52). A forward annular step (70) is provided in the middle of the inner diameter of the rod (54). The inner diameter of the front part is slightly larger than the inner diameter of the rear part, and a cylindrical washer pusher (55) is screwed inside the front end part of the large diameter part (54a) of the front part of this rod (54). The inner diameter of the pusher (55) is slightly smaller than the inner diameter of the large diameter portion (54a) of the rod (54), and a rearward facing annular step portion (56) is formed between them. A groove-shaped annular space is formed between the stepped portion (56) and the forward-facing stepped portion (70), and the inner length of the rod (54) and the pusher (55) is determined by the combined length of these. A long hollow washer guide (57) is attached so that it can move back and forth. At the front, forward annular step portion corresponding to the stepped portion of the rearward (56) of the piston rod (54) (58) is formed, the snap ring (7 in this part
1) is fixed. In addition, the large diameter part (5
In the annular space of 4a), a compression coil spring (72) whose front end is in pressure contact with the snap ring (71) and whose rear end is in pressure contact with the forward step (70) of the rod (54) is installed, and the washer guide (57) is turned forward. Is urged to. The outer diameter of the front portion of the washer guide (57) is equal to the outer diameter of the dummy shaft (12), and the inner diameter of the front portion is slightly larger than the inner diameter of the dummy shaft (12). A cylindrical guide stopper (59) is screwed onto the rear end of the washer guide (57) protruding from the piston rod (54), and is fixed by a lock nut (60). Guide stopper (5
The front part of 9) is fitted in the rear end part of the piston rod (54) protruding from the cylinder (52) so as to be movable back and forth. A longer dummy shaft positioning rod (61) is attached to the inside of the washer guide (57) so as to be movable back and forth.
The outer diameter of the front part of the positioning rod (61) is the dummy shaft (12).
A taper portion (61a) that is slightly larger than the inner diameter of the hole and is fitted to the taper portion (13a) of the hole (13) of the dummy shaft (12) is formed at the front end thereof. A spring bearing (62) is fixed to the rear end of the positioning rod (61) protruding from the washer guide (57), and between this spring bearing (62) and the lock nut (60) of the guide stopper (59). A compression coil spring (63) for biasing the positioning rod (61) backward is attached.
The position regulating rod (64) is fixed to the rear end surface of the guide stopper (59), and the rear end portion of the rod (64) receives the forked portion (62a) of the spring bearing (62) of the positioning rod (61). A large diameter stepped head (65) is provided to regulate the rear end position. The biasing force of the coil spring (72) is slightly larger than the biasing force of the coil spring (63).

The washer mounting head (17) is swung by the rotation of the swivel shaft (51), and the washer receiving state is shown in which the cylinder (52) is vertical as shown by the chain line in FIGS. 1 and 2, and FIG. As shown by the solid line, the cylinder (52) is switched to the washer-assembled state in which it is horizontal. In the washer receiving state, the front portion of the cylinder (52) is on the upper side, and the washer guide (57) is located immediately below the guide rod (42) at the washer supply position. In the state where the washer is assembled, the positioning rod (61) is located on the extension line of the dummy shaft (12) of the pinion gear (10) at the assembly position, and the front portion comes to the pinion gear (10) side. Further, the frame (48) is provided with an air cylinder (67) having a push rod (66) positioned on a rear extension line of the positioning rod (61) in the assembled state.

The pinion gears (10) to which the needles (11) and dummy shafts (12) were attached in the previous step are supplied one by one to the recesses (22) of the lift body (20) at the lower end position by the loading chute (14). To be done. Pinion gear (10)
Is supplied to the recess (22), the lift body (20) rises to position the pinion gear (10) at the assembling position.

On the other hand, two washers (26) and (27) are supplied to the two sets of washer mounting heads (17), respectively, as will be described later, and when the pinion gear (10) is positioned at the mounting position, As will be described later, two washers (26) and (27) are attached to both ends of the pinion gear (10) by the attachment head (17).

The pinion gear (10) on which the washers (26) (27) have been assembled is moved from the lift body (20) to the carry-out chute (18) by the carry-out pusher (47). At this time,
The movable stopper (44) of the carry-out chute (18) is lowered to the operating position, and the pinion gear (10) hits the stopper (44) and stops. And the pinion gear (1
With (0) stopped, the checker (45) operates,
Inspect whether the washers (26) (27) are assembled correctly. This checker (45) sandwiches the washers (26) (27) of the pinion gear (10) from both sides, and determines whether or not the washers (26) (27) are properly assembled by the thickness. To do. After the inspection, the movable stopper (44) is raised to the non-operating position, and the washer (26) (27) is normally assembled. For the good product, the gate (46) is the good product discharge position shown by the broken line in FIG. The gate (46) is shown in the same figure for defective products that are discharged from the good product discharge port (68) above the carry-out chute (18) and the washers (26) and (27) are not assembled properly. By switching to the defective product discharge position indicated by the chain line, the defective product is discharged from the defective product discharge port (69) below the carry-out shout (18).

Next, referring to FIG. 1 to FIG. 3, two washers (26) are attached to the washer assembly head (17) from the washer storage / supply device (16).
The operation of each part when supplying (27) will be described for one side.

First, when receiving the washers (26) (27), the assembly head (17) rotates from the assembled state to the received state.
At this time, as shown in FIG. 5, the assembling head (17)
Piston (53) is stopped at the rear end of the cylinder (52), and the washer pusher (55) is positioned slightly before the front end of the cylinder (52). The washer guide (57) is biased forward by the spring (72), and its snap ring (71) stops at the front end position where it hits the stepped portion (56) of the rod (54),
The dummy shaft positioning rod (61) is biased rearward by the spring (63) so that the spring bearing (62) is moved to the position regulating rod (64).
It has stopped at the rear end position where it hits the stepped head (65). Then, the washer guide (57) protrudes slightly ahead of the front end of the washer pusher (55), and the positioning rod (61) is attached to the washer guide (5).
He retreated a little after the front end of 7).

When the assembly head (17) rotates to the washer receiving state, as shown by the solid line in FIG. 3, the rotating plate (35) of the first washer magazine (29) is stopped in the take-out state, The rotating plate (36) of the washer magazine (30) is rotating from the take-out state to the supply state. Rotating plate (36)
The bottom washer (27) of the magazine (30) fits into the recess (40) when the
When 6) rotates to the supply state, only this washer (27) is held in the recess (40) and moved to the supply position. Even if the rotary plate (36) rotates, a part of it is always close to the lower surface of the guide tube (34) of the magazine (30), so
The remaining washers (27) of the magazine (30) will not fall. When the washer (27) moves to the supply position, the guide rod (42) descends as shown by the chain line in FIG. 1, and the hole of the washer (27) and the cutout (40) of the recess (40) of the rotary plate (36) ( 40a) to approach the upward front end face of the washer guide (57) of the assembly head (17). When the guide rod (42) descends and stops, the rotary plate (36) returns to the take-out state. As a result, only the washer (27) leaves the recess (40) of the rotating plate (36) and remains on the guide rod (42), and due to gravity, the washer (27) fits into the washer guide (57) and isher pusher. (55) on top. When the washer (27) moves to the washer guide (57), the guide rod (42) rises to the upper end position. When the rotary plate (36) returns from the supply state to the take-out state, the washer (27) at the bottom of the magazine (30) and in contact with the upper surface of the rotary plate (36) fits into the recess (40). This washer (27) is likewise supplied to the assembly head (17) next time.

At the same time that the rotary plate (36) of the second magazine (30) returns to the take-out state, the rotary plate (35) of the first magazine (35) rotates from the take-out state to the supply state, and similarly, the inner washer ( 26) is fed onto the outer washer (27) of the washer guide (57) of the assembly head (17).

In this way, the washer guide (57) has two washers (26) (2
When 7) is supplied, the assembly head (17) rotates to the assembled state. At this time, the push rod (66) is at the rear end retracted position, and when the assembly head (17) is in the assembled state, the positioning rod (61) is located immediately in front of the push rod (66).

The operation of the set of washer storage and supply device (16) and the assembly head (17) on the opposite side is the same.

As described above, the washers (26) (27) supplied to the two sets of the mounting members (17) are mounted on both end faces of the pinion gear (10) at the mounting position as follows (No. 1). Figure 5 ~
(See Figure 11). In addition, in order to facilitate understanding, FIGS. 5 to 9 show the position regulating rod (64) at a position displaced by 90 ° from the actual position.

When the pinion gear (10) is positioned at the assembling position, first, as shown in FIG. 5, first washers (26) (27).
Only the side plate (24) of the lift (15) on the side to be assembled descends to the open position. Next, the push rod (66) on the side of the side plate (24) in the open position advances. As a result, the positioning rod (61) advances. At this time, washer guide (57)
Is biased forward by the spring (63), but the snap ring (71) hits the stepped portion (56) of the piston rod (54), so that the washer guide (57) does not move. Then, as shown in FIG. 6, the taper portion (61a) at the front end of the positioning rod (61) projects forward from the front end of the washer guide (57) and fits into the taper portion (13a) of the dummy shaft (12) to close it. Dummy shaft (1
2) Lightly press to position. Then the cylinder (5
2) Air is supplied to the rear chamber and piston rod (54)
Moves forward. As a result, the washer guide (57) is also moved forward by the urging force of the coil spring (72) between the piston rod (54) and the washer guide (57), and the stopper (59) moves to the cylinder as shown in FIG. By hitting the rear end face of (52), only the washer guide (57) stops. At this time, there is a slight gap between the front end face of the washer guide (57) and the end face of the dummy shaft (12). The piston rod (54) further advances until the piston (53) reaches the front end of the piston (52), and as shown in FIG. 8, the washer pusher (55) has its front end face at the front end of the washer guide (57). It advances to a position almost flush with the surface and stops. This allows
Two washers (26) (2) that were attached to the washer guide (57)
7) is transferred from the washer guide (57) to the dummy shaft (12). When the washers (26) (27) are assembled to the ends of the dummy shaft (12), first, as shown in FIG. 9, the push rod (66) retracts to the rear end position and the positioning rod (61). However, due to the spring (63), the spring receiver (62) is retracted from the dummy shaft (12) to a position where it comes into contact with the stepped head portion (65) of the position regulating rod (64). In this state, the side plate (24) is lowered to the open position on the opposite side as shown in FIG.
Then, also on the end of the dummy shaft (12) on that side,
As shown in Fig. 11, in the same operation, two washers (26) (2
7) is assembled, and the pinion gear (10) with the washers (26) (27) assembled is transferred from the lift body (20) to the carry-out chute (18) by the pusher (47).

Finally, air is supplied to the front chamber of the cylinder (52),
The piston rod (54) retracts. At this time, since the washer guide (57) is biased forward by the spring (72), only the piston rod (54) retracts at the beginning. Then, the rearward facing step (5
After 6) hits the snap ring (71) of the washer guide (57), both of them retract together and return to the original state as shown in FIG.

In the above assembling apparatus, the dummy shaft (12) is positioned by the positioning rod (61) of the assembling head (17), and the washer guide (57) is guided to assemble the washers (26) (27). , Assembly is reliable and stability is high.

In the above embodiment, the case where a plurality of washers (26) and (27) are attached to one end face of the pinion gear (10) is shown.
In some cases, one washer may be attached to one end face.

Further, the present invention can be applied to parts with holes other than the pinion gear.

According to the device of the present invention, as described above, by guiding the inside diameter of the washer, the washer is transferred from the washer guide rod of the storage / supply means to the shaft of the holed component through the washer guide of the assembling means. It can be assembled securely and there is very little risk of trouble. Since the washer is assembled while the shaft is almost horizontal, the shaft does not drop and it is not necessary to move it with the jig attached, so the device does not become large. Further, since the washers are assembled on both sides of the pinion gear at one assembly position, there is no problem such as movement of the needle during transportation.

[Brief description of drawings]

1 is a partially cutaway side view of a washer mounting device showing an embodiment of the present invention, FIG. 2 is a partially cutaway front view taken along line II-II in FIG. 1, and FIG. 3 is FIG. Fig. 4 is a plan view taken along line III, Fig. 4 is a plan view taken along line IV-IV in Fig. 2, and Figs. 5 to 9 are cross-sectional views sequentially showing the operation of the washer mounting head at the time of mounting the washer on one side. FIG. 10 and FIG. 11 are enlarged cross-sectional views showing a portion of the pinion gear at the time of assembling the washer on the opposite side. (10) …… Pinion gear, (12) …… Dummy shaft,
(14) ... Carry-in chute, (15) ... Positioning lift, (16) ... Washer storage and supply device, (17) ... Washer mounting head, (18) ... Carry-out chute, (26) (27) ) ……
Washer, (42) …… washer guide rod, (50) …… air cylinder, (55) …… washer pusher, (57) …… washer guide.

Claims (1)

[Claims] 1. A device for attaching washers to both ends of a shaft that is passed through a hole of a holed part to attach washers to both end faces of the holed part, wherein the holed part is attached in a state where the shaft is substantially horizontal. Mounting means for positioning at a predetermined mounting position, washer storage and supply means, and mounting for mounting the washer supplied by this storage and supply means to both ends of the shaft of the perforated component at the mounting position at the same time or one side at a time Means and a carrying-out means for carrying out the perforated part to which the washer is assembled, and the storage and feeding means is fitted inside the washer and is disposed substantially vertically downward so as to guide the inside diameter of the washer guide. A washer guide that is provided with a rod and is arranged such that the assembling means fits inside the washer and guides its inner diameter and can move axially in a horizontal state; and a washer guide in a substantially horizontal state. Move axially A washer pusher movably arranged and a swivel means for swiveling the washer guide into a substantially vertical upward washer receiving state and a substantially horizontal assembling state, and the washer guide of the assembling means swivels to the washer receiving state. When the washer is being driven, the lower end surface of the washer guide rod of the storage and supply means is brought close to the upper end surface of the washer guide, and the washer is guided by the inner diameter and transferred from the washer guide rod to the washer guide. When the guide is rotated to the assembled state, the end face of the washer guide comes close to the end face of the shaft of the holed component, the washer pusher moves, and the washer is guided through the inner diameter of the washer guide holed component. A device that assembles washers on both end faces of a holed component that is designed to be transferred to a shaft.