JPS6043255B2 - Bearing cup supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION An automatic assembly line for assembling a rotating shaft member into a housing member via a conical roller bearing (taper roller bearing) requires at least an outer ring, or a bearing cup (hereinafter simply referred to as a cup), to be installed in the housing member. A press-fitting unit for press-fitting the bearing cone, a unit for press-fitting the inner ring or bearing cone into the shaft member, and a tightening unit for tightening both with a predetermined tightening torque to give a desired preload to the conical roller bearing.

The present invention relates to a cup supply device that is installed adjacent to the cup press-fitting unit and automatically supplies the press-fit unit cups in such an automatic assembly line.

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the cup feeding device according to the present invention is roughly divided into an inclined chute A, a discriminating device E for discriminating the front and back sides of the cups W sent from the inclined chute A, and a discriminating device E for discriminating the front and back sides of the cups W sent from the inclined chute A, and for discriminating the discriminated cups one by one. Escapement B to be dropped,
It is formed by a rotating device F that rotationally controls the cup that has fallen from the escapement B based on the discrimination signal of the front/back discriminating device to keep it in a fixed orientation, and a feeding device C that feeds the cup to a cup press-fitting unit (not shown). be done. The inclined chute A is installed at an angle with respect to the base 1 at an angle that allows the cup W to run by itself within the chute. The right end of this chute is connected to an automatic or manual cup inlet (not shown). A guide 2 for dropping the cup vertically downward is connected to the terminal end of the inclined chute A, and an escapement B is attached in connection with this guide. As shown in FIG. 2, the escapement B includes a swinging rod 4 pivotally connected to a pin 3 and pins 5 and 6 that engage with fork grooves 4a and 4b provided on both edges of the swinging rod 4.
A pair of upper and lower locking rods 7, 8 and a pair of reflective phototubes 9, 10 shown in the discrimination device E as shown in FIG.
Consists of etc.

Since the swinging rod 4 swings around the pin 3 by a drive member to be described later, the tips of the locking rods 7 and 8 protrude and retract into the passage 11 and stop at a predetermined standby position. The current cup is dropped onto the feeding device C below it, or the subsequent cup is fed to a predetermined standby position and held there. That is, as shown in FIG. 2A, the upper locking rod 7 protrudes into the passage 11 and engages with the tapered inner circumferential surface of the hunted cup Wa, thereby preventing the cup Wa and the subsequent cup W from falling. When the swinging rod 4 swings clockwise against the anti-compression spring 12, the lower locking rod 8 moves out of the passage 11 before the upper locking rod 7 leaves the passage 11. 11, when the engagement between the upper locking rod 7 and the cup Wa is completely disengaged as shown by the two-dot chain line, the cup Wa falls by a distance L and the cup Wa falls downward by a distance L. It will be locked by the locking rod 8. This state is cup W
means the standby state of a, and in the standby state, the cup Wa
When the phototube 9 is placed face up, that is, in the state shown by the solid line in FIG.
The front discrimination signal issued by the operation of the other electric tube 10 and
The front and back sides of the cup can be determined by the back side signal that is emitted by the operation of the cup. When the swinging rod 4 shifts from the state shown by the chain line to the state shown by the solid line, the upper locking rod 7 enters into the hollow part of the succeeding cup W before the lower locking rod 8 comes out of the passage 11. By setting it so that (it reciprocally appears and disappears into the passage), when the lower locking rod 8 is completely removed from the passage 11, the cup Wa in the standby position is allowed to fall naturally, and. The subsequent cup W is hooked onto the locking rod 7 and held together to prevent it from falling any further. This cup is held in the standby state by the swinging rod 4 shifting again to the state shown by the two-dot chain line as described above. Next, the rotation device F receives the cup supplied from the escapement B and controls its rotation to a desired posture based on the front/back discrimination signal, and the delivery device C feeds the press-fitting unit (not shown) to the fixed position. This will be explained based on the diagram.

First, regarding the rotating device F, reference numeral 13 in the figure is a support tube that receives the cup W that has fallen from the escapement B, and this support tube has three orthogonal support tubes with a width that allows the cup W to pass through. Through-holes 14, 15, and 16 are formed extending through the center, and the central through-hole 14 and escapement passage 11 are fixed so as to face each other.

A circular mound portion 18 integral with the pinion shaft 17 is fitted into the support tube 13 so as to rotate smoothly without play. This rounded portion 18 has a diameter approximately equal to the outer diameter of the cup, and a notch 19 having approximately the same width as the through holes 14, 15, 16 is provided through the center thereof. Further, the gear portion of the pinion shaft 17 is always in mesh with a cooling shaft 21 which is moved by the cylinder 20. This rack axis 2
1 is the forward position Sf where the cylinder 20 is most extended;
A neutral position S where forward movement is regulated by a contracted retreat position Sr and a stopper 23 connected to an intermediate stop cylinder 22. Select and stop at the three positions. This rack shaft 21 is at the neutral position S as shown in FIG. When the pinion shaft 17 is stopped at , the notch 19 carved in the rounded portion 18 of the pinion shaft 17 corresponds to the through hole 14 of the support tube 13, and the cup w supplied falling from the escapement B.
is supported within the notch 19. And this neutral position S. The rack shaft 21 is in the retracted position Sr.
4, the round part 18 of the pinion shaft 17 rotates 90 degrees in the direction indicated by the arrow R in FIG. 4, stops, and returns to the neutral position S. When the intermediate stop cylinder 22 contracts and the rack shaft 21 moves to the forward position Sf, the circular tomb portion 18
rotates 900 revolutions in the direction of arrow r and stops. Furthermore, a kicking pin 26 is installed on the rack shaft 21 and moves using a long groove 25 provided in the housing 24 as a guide, so that the rack shaft 21 is at the neutral position S. When moving from to the retreat position S, the arm 27 is moved to the pin 28 by the kicking pin 26.
Rotate around the center to the position indicated by the two-dot chain line as shown in Fig. 3A. Pin 3 that engages with fork groove 29 provided in arm 27
The rod on which 0 is implanted is the lower locking rod 8 of the escapement B described above. Therefore, the rack shaft 21 is in the retracted position S,
While the locking rod 8 is stopped at the anti-compression spring 1
2, its tip portion protrudes into the passage 11 and stops there. Note that when the rack shaft 21 leaves the retreat position Sr, the locking rod 8 begins to move backward due to the anti-compression spring 12, and at the same time, the upper locking rod 7 in the escape B
begins to enter the passage 11 via the swinging rod 4 and pin 5. Next, regarding the feeding device C, in FIG. 3A, a cylinder 31 attached to the right end of the figure is integrally connected to a slide plate 32 having a square groove 33 at the front end. On one side of the slide plate 3, an L-shaped plate 34 having a curved surface 35 with the same or slightly larger radius of curvature as the cup W is connected by shoulder screws 36, 36 to prevent it from falling off, as shown in FIG. It is supported so that it can slide freely. This L-shaped plate 3
4 has a pair of front and rear notches 37 and 38 into which the shaft of the shoulder screw 36 is loosely fitted, and a pin 40 and a spring 41 connected to the front notch 37 and fixed to the slide plate 32 side. A long groove 39 is carved,
In the normal state, the L-shaped plate 34 is always pressed in the direction of arrow D by the spring 41 so that the curved surface 35 approaches the ■-shaped groove 33, and the rear end surface slides on the slide plate 32. It is pressed into contact with a stopper 42 provided on a fixed frame 43 that is freely supported. In FIG. 3A, the L-shaped plate 34 and the stopper 42 are shown separated for clarity. Also, this L-shaped plate 34
The curved surface 35 and the tip ■-shaped groove 33 of the slide plate 32
In the normal state, as shown in FIG. The support tube 1 is set to be slightly thinner than 14, 15, and 16.
3 is arranged on an extension line of a pair of parallel through holes 15 and 16. Subsequently, the above-mentioned discriminator E
The relationship between this and the rotation device F will be explained.

At the opening in FIG. 2, the phototube 9 transmits a front discrimination signal for the cup Wa, and the switching member 50 receiving this command issues a retreat command to the cylinder 20 to rotate the member 18 in the R direction 90. Further, when a signal for determining the back side of the cup Wa is transmitted from the phototube 10, the switching member 50 causes the cylinder 22 to contract, and also to extend the cylinder 20 and rotate the member 18 by 90 degrees in the r direction. . The switching member 50 is a switching valve mechanism commonly used in a cylinder's hydraulic/pneumatic circuit. Next, the operation of the cup feeding device will be explained.

A cup W fed in an arbitrary direction from an input port (not shown) reaches an escapement B through a guide 2 that rolls down inside an inclined chute A due to its own weight. Now this cup W
When the cup Wa is placed in a standby state by the lower locking rod 8, the front and back sides of the cup Wa in the standby state are identified by a pair of phototubes 9 and 10. In addition, at this time, the rack shaft 21
is located at the retracted position Sr, and the circular portion 18 integrated with the pinion shaft 17 is at a position rotated 900 clockwise (in the direction of arrow R) from the state shown by the solid line in FIG.
It is stopped at a position aligned with the pair of parallel through holes 15 and 16 of No. 3 in a straight line. Then, the above-mentioned head/off determination signal is “head”
, "back", once the rack shaft 21
is the neutral position S. cylinders 20, 22 so as to stop at
make it work. As a result, the restraint of the kicking pin 26 on the arm 27 is released, so the locking rod 8 mentioned in the escapement B moves backward due to the spring pressure of the anti-compression spring 12, and at the same time, the arm 27 moves around the pin 28. Rotate. By retracting the lower locking rod 8, the cup Wa that has been placed in a standby state is dropped into this notch 19 toward the rotating device F, and the subsequent cup W is moved by the upper locking rod 7. and lock it.

On the other hand, the rack shaft 21 moves from the retreated position S to the neutral position S. With the transition to the pinion shaft 17, the circular tomb part 18 is moved to a position where the notch 19 matches the through hole 14 of the support cylinder 13.
Since the cup rotates until it stops, the cup falling from the escapement B can be reliably received into the notch 19. When a known detection means (not shown) senses that the cup W has been received in the support cylinder 13, the cylinder 20 starts operating again based on the above-mentioned front/back discrimination signal. If the discrimination signal is now "Release", the intermediate stop cylinder 22 is retracted and the rack shaft 21 is at the neutral position S. The cylinder 20 moves toward the forward position Sf from
is expanding. As a result, the rounded portion 18 and the cutlet W rotate in a counterclockwise direction (in the direction of arrow r) 90 from the state shown in FIG. is reduced and the neutral position S
. Since the rack shaft 21, which was in
Direction) Since the cup W rotates 90F2 and stops, the orientation of the cup W within the support tube 13 remains constant. After the rotation of the cup is controlled so that the orientation of the cup is kept constant based on the surface/separation determination signal, the cylinder 31 that drives the slide plate 32 and the L-shaped plate 34 of the feeding device C starts operating. When the cylinder 31 extends from the state shown in FIG. 3, the slide plate 32 moves forward in conjunction with this, but the L-shaped plate 34 does not move because its rear end surface remains pressed against the stopper 42 due to the spring pressure of the spring 41. . And the ■-shaped groove 3 at the front end of the slide plate.
When the cup W is pushed in until it comes into contact with the curved surface 35 of the L-shaped plate 34, both plates 32 and 34 are moved by the elastic force of the spring 41 to the curved surface 3.
5 and the V-shaped groove 33, the cup W is held together and moves forward in conjunction with the extension operation of the cylinder 31. At this time, the cup W is held between the square groove 33 and the curved surface 35 by the residual accumulated force of the spring 41, so that it does not fall out. The cylinder 31 moves the cup W to a predetermined loading position of a bearing cup press-fitting unit (not shown) and stops there. This stop signal from the cylinder 31 activates a breath machine (not shown) to press fit the cup into the housing member. When the cylinder 31 is returned to its original position upon completion of this press-fitting, one cycle of operation at the main cup supply position is completed, and the above-described operation is repeated again.
In addition, when the front/back discrimination signal is "back", the rack shaft 21
While the is stopped at the forward position Sf. Since the cup is sent out at the neutral position S when moving to the next cycle. The process begins by controlling the movement of the cylinder 20 so that it passes through and retreats to the retreat position S. or,
When the cup is in the "front" position, the rack shaft 21 has selected the retracted position Sr, and therefore, during the cup feeding operation, the following cup is held in a standby state, and the front/back determination operation is performed. As described above, according to the present invention, it is possible to constantly supply cups in a constant direction to the bearing cup press-fitting press, and in particular, an escapement that drops cups one by one whose front and back sides have been determined,
The circular tomb part that receives this dropped cup and controls its rotation so that the orientation of the cup remains constant is configured to operate in conjunction with each other, so the escapement and the rotation control of the cup are separated from each other by separate mechanisms, unlike in the past. This has the advantage that the entire device can be made smaller and more compact, and the supply capacity can be greatly improved, as compared to the case where the device is driven.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a front view showing an outline of an embodiment of the present invention, and Fig. 2A is a sectional view taken along line I-1 in Fig. 1, showing the escapement of the main part of the present invention. Particularly detailed views, Figure 2A is a sectional view taken along the line ■-■ of Figure 2A, which shows the relationship with the rotating device, and Figure 3A is a plan sectional view showing the feeding device of the present invention; The opening in Figure 3 is a sectional view taken along the line ■--■ in Figure 3A, and Figure 4 is a perspective view of the main part of Figure 3. A... Inclined chute, B... Escapement, C... Feeding device, E...
・Discrimination device, F...Rotating device, W, Wa...
... Bearing cup, 4... Swinging rod, 7, 8.
...Latching rod, 9, 10... Phototube, 11
...Passage, 12 ...Spring, 14,
1516...Through hole, 13...Support tube, 1
7...Zenion axis, 18...Rounded part, 1
9...Notch, 21...Rack shaft, 27
...Arm, 32...Slide plate, 34...L-shaped plate.

Claims (1)

[Claims] 1. Each tip of a pair of upper and lower locking rods that engage with both edges of the swing rod is configured to relatively protrude and retract into the passage, and the cup of the tapered roller bearing is sequentially locked at a predetermined standby position. an escapement for causing the cup to drop one by one; a spring for repelling the lower locking rod in the escapement so as to sink it from the passage; a discriminating device installed in the escapement for determining the orientation of the cup; A circle with a cutout to receive the cup
The part is rotatably fitted into a support cylinder with through holes in three orthogonal directions, and the above-mentioned circle
It consists of a rotating device that rotates the portion by 90 degrees in one direction or the opposite direction, and a feeding device that sends out a cup with a circular portion whose notch matches the pair of opposing through holes. The drive member that rotates the circular part by the arm and the lower locking rod are connected to each other by means of the spring, and the lower locking rod, which is recessed from the passage, is moved into the passage when one of the drive members is driven. A bearing cup supply device characterized by having a structure in which the bearing cup is engaged so as to protrude from the bearing cup.