JP3392210B2 - Component aligning device and component assembling device using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parts aligning device for supplying parts while aligning them, and a parts assembling device using the parts aligning device.

[0002]

2. Description of the Related Art Conventionally, as an aligning device for aligning parts with a protruding part positioned in a fixed direction in the process of continuously supplying parts having protruding parts on the outer periphery of a cylindrical shape, it is actually fair to say that it is 1-17537. Nos. 3,238,220 and 3,238,221.

In the aligning device proposed in Japanese Utility Model Publication No. 17375/1990, a rotor is inserted into a hollow of a component having a hollow cross section and a cylindrical outer shape to rotate the component, and this rotation is performed. In the process, a stopper is brought into contact with the protrusion to align the protrusion in a certain direction.

In the aligning devices proposed in JP-A-3-238220 and JP-A-3-238221, the parts are rotated by sliding rollers so that parts having a non-hollow cross section can be aligned. Then, during this rotation process, the stoppers are brought into contact with the protrusions and aligned while supplying.

[0005]

However, in the aligning devices described in the respective publications, in order to perform the positioning at high speed and with high precision, the parts are rotated excessively while the protrusions are in contact with the stoppers. , The parts and the rotor or the rollers wear each other, and the wear powder adheres to the parts. If adhered, for example, when this part is incorporated in a camera, a photographic film cartridge, or the like, abrasion powder may cause scratches on the film surface, which may be a fatal problem that a good printed photograph cannot be obtained.
Therefore, when such an aligning device is used in an assembly line of a camera or a photographic film cartridge, it is necessary to add a cleaning step for cleaning abrasion powder of parts, which is a drawback of increasing cost. Further, since such abrasion powder increases in proportion to the production time, it has been one of the causes of causing unexpected troubles by adhering to sensors such as alignment devices and production equipment.

Therefore, it is an object of the present invention to provide a parts aligning device which suppresses the generation of abrasion powder to a low level, and a parts assembling device using the same.

[0007]

In order to achieve the above object, according to the present invention, a supply mechanism for supplying a ring member with a concave portion or a convex portion aligned in a certain direction, and a leading end portion of the supply mechanism. Means for separating only the ring member of the ring member from the subsequent ring member, a conveying pin for entering the bearing portion of the divided ring member and horizontally conveying the ring member, and abutting the convex portion or the concave portion for conveying the pin. During the horizontal transportation, the ring member is rotated around the transportation pin to align the convex portion or the concave portion in a certain direction.

[0008]

The ring member is supplied with the recesses or the protrusions aligned in a certain direction by the supply mechanism. At the terminal end of the supply mechanism, only the leading ring member is separated from the succeeding ring member by the dividing means. A transport pin is inserted into the bearing portion of the divided leading ring member. Then, the transport pin moves horizontally to transport the ring member horizontally. During horizontal transportation of the transport pin, the swivel pin rotates around the transport pin to rotate the ring member, and aligns the protrusions or recesses in a certain direction so that the ring member can be easily assembled.
According to this, since the swing pin is rotated and the ring members are aligned while being horizontally transported by the transport pin, almost no friction occurs in the components.

As shown in FIG. 1, the photographic film cartridge 2 includes upper and lower cases 8 and 9 made of a resin integrally molded product.
The assembly is completed by rotatably incorporating the spool 4 around which the photographic film 5 is wound in advance. Up·
The lower cases 8 and 9 are provided with light-shielding teremps on the upper and lower inner walls of the entrance and exit of the photographic film, respectively, and the spool 4 has a key 20 formed at one end and a key groove 1
The ring member 19 is press-fitted so that 9b is fitted. The ring member 19 has fan-shaped blades 19a integrally formed on the outer periphery thereof. The blade 19a has a thickness smaller than that of the ring member 19 and a width narrower than the outer shape of the ring member 19. The blade 19a rotates integrally with the spool 4 and has a plurality of openings 21 formed on the side surface of the upper case. One of the openings 21 is exposed to display the exposure state of the photographic film (see Japanese Patent Laid-Open No. 5-134359).

As shown in FIG. 2, the hole 1 of the ring member 19
9d and the shaft of the spool 4 have a clearance tolerance such that there is a clearance from the end surface of the spool 4 to the line 4a and a shrinkage from the line 4a to the bottom so that the press-fitting can be easily performed. In addition, the edge 1 from the key groove 19b to the hole 19d
9e and the end surface 4b of the spool 4 are tapered so as to follow each other in the press-fitting direction at the time of press-fitting. Further, the tip 20a of the key 20 on the side into which the ring member 19 is inserted has a round shape so that the key 20 automatically follows even if it is slightly displaced from the key groove 19b. The tip 2 of the key 20
The shape of 0a is not limited to a round shape as long as it automatically follows the key groove 19b, and may be, for example, a shape in which two slopes form a triangle.

[0011]

EXAMPLE As shown in FIGS. 3 and 4, the bladed ring member 19 has a uniform orientation of the central axes of the holes 19d in the bowl parts feeder and a fixed orientation of the blades 19a. It is continuously supplied in a line to the guide groove 31 of the linear linear track 30 in a state of facing (rightward in the figure). The guide groove 31 has a width that guides the outer shape of the ring member 19. Therefore, although being fed in a fixed direction, the ring member 19 is fed while rotating within the range of the gap between the blade 19a and the guide groove 31.

The supplied ring members 19 are sent to the handling position 33 of the stage 32 one by one. At the handling position 33, the ring member 19 is handled by the robot hand and press-fitted onto the spool 4. Before the ring member 19 is supplied to the handling position 33, the posture of the ring member 19 is changed so that it can be easily handled.

At the terminal end 30a of the linear track 30,
A stop pin 34, a transport pin 35, a turning pin 36, and a stop plate 37 are arranged. The stop plate 37 is arranged between the end of the linear track 30 and the stage 32, and is rotated by the rotary actuator 38.
It pivots between a blocking position that blocks the passage of and the open position that opens.

The stop pin 34 acts as a dividing means, and the ring member 19 abutting the stop plate 37.
Is moved by an actuator 39 of a direct acting type between an insertion position inserted into the hole 19d of the second ring member 19 from the beginning and a retracted position retracted upward from this position. This movement is interlocked with the movement of the stop plate 37, and when the stop plate 37 is in the open position, the stop pin 34 is moved.
Is the insertion position, and when the stop plate 37 is the blocking position, the stop pin 34 is controlled to the retracted position. The shaft diameter of the stop pin 34 is smaller than that of the hole 19d.

In order to feed the ring members 19 one by one to the handling position 33, the transport pin 35 and the swing pin 36 are provided between the end portion 30a of the linear track 30 and the handling position 33 by a linear actuator 40. It can be moved freely. Further, the transport pin 35 and the swing pin 36 can be moved up and down in parallel with the movement of the stop pin 34 by a linear actuator 41. When moved, the transport pin 35 is inserted into the hole 19d of the ring member 19 that is in contact with the stop plate 37 at the terminal end portion 30a, and the swivel pin 36 is inserted beside the blade 19a. Further, the turning pin 36 is rotatably provided with respect to the transport pin 35 by the turning type actuator 42. This rotation is performed by the direct acting actuator 40.
Is performed in the process of being conveyed from the terminal end portion 30a to the handling position 33, and the ring member 19 is changed to a posture in which it is easy to handle. The shaft diameter of the transport pin 35 is also smaller than that of the hole 19d.

As shown in FIG. 5, the handling position 33
In order to optically detect the presence / absence of the ring member 19, a photoelectric switch light projector 50 and a light receiver 51 are arranged. When the ring member 19 is detected by these, handling is performed by the robot hand 52. Be seen. In addition to the guide groove 32a that guides the outer periphery of the ring portion 19, the stage 32 has a blade receiving surface 32b that is further lowered by cutting the guide groove 32a by the thickness of the blade 19a.
Is formed, and at the edge of the blade receiving surface 32b, a guide surface 32c formed along the rotation locus of the blade 19a.
Are formed.

As shown in FIGS. 6 and 7, the robot hand 52 has two claws 53 and 54 for chucking the ring member 19 and a drive plate 55 to which one claw 53 is fixed.
And a driven plate 56 to which the other claw 54 is fixed. The drive plate 55 and the driven plate 56 are respectively connected to the shaft 5
The claws 53 and 54 are rotatably attached to each other so that they can rotate in an interlocking manner so that the opening angles of the claws 53 and 54 are the same, and are normally urged by a spring 59 toward the closed position. . Then, by driving the horizontal shaft 60 provided on the rear end side of the drive plate 55 in the direction of the arrow, the claws 53, 54
Opens and closes.

The two claws 53, 54 have a thickness of the blade 19a.
The same as the above, the outer periphery of the ring member 19 is clamped by the chuck portion 61 formed in a V shape at an angle of 120 °, and the blade 19a is clamped from both sides by the positioning portion 62 provided at the tip of the chuck portion 61. , Has a shape that can be fitted in a predetermined direction with rough accuracy. During handling, a slight gap is formed between the positioning portion 62 and the blade 19a. The ring member 19 rotates within the range of this gap. The clamping force is, for example, in order to allow rotation of the handled ring member 19,
About 0.5 Kgf is desirable. This robot hand 52
Thus, the ring member 19 is press-fitted onto the shaft of the spool 4 supplied beside the stage 32.

The operation of the above configuration will be described. As shown in FIG. 3, the ring member 19 supplied to the linear track 30 is aligned in a predetermined direction with the outer periphery of the cylindrical portion being guided by the guide groove 31 with the blade 19a facing rightward. There is. The stop plate 37 is in the blocking position, and blocks the conveyance of the leading ring member 19. Then, the actuator 39 is activated. As a result, the stop pin 34 enters into the hole 19d of the second ring member 19 counting from the top. At the same time, the actuator 41 is actuated so that the transport pin 35 and the leading hole 19d of the ring member 19 are formed.
And the swivel pin 36 is at the top of the blade 1 of the ring member 19.
It is inserted beside 9a. After that, the actuator 38 operates and the stop plate 37 rotates to the open position.

When the stop plate 37 rotates to the open position, the actuator 40 operates and the transport pin 35 and the swing pin 3 are operated.
6 and 6 move leftward in the figure. After a lapse of a certain time from the start of this movement, the actuator 42 operates and the swing pin 36 rotates counterclockwise around the transport pin 35. The operation of this actuator 42 is approximately 90 °
Just rotate and then stop. As a result, the state shown in FIG. 5 is obtained. After that, the transport pin 35 and the turning pin 36 are moved to the retracted position and returned to the position of the terminal end portion 30a for the next preparation.

When the transport pin 35 and the turning pin 36 are retracted, the presence or absence of the ring member 19 is confirmed by the sensors 50 and 51, and if it is determined that the ring member 19 is present, the robot hand 52 moves the ring member 19 at the handling position. Handled. As shown in FIG. 6, the handled ring member 19 has its cylindrical outer periphery supported by the chuck portions 61 of the claws 53 and 54, and each positioning portion 62 positions both sides of the blade 19a. In this state, the key groove 19b faces 90 ° leftward.

After that, the robot hand 52 lifts the handled ring member 19 upward to move it to the spool 4
Press into the shaft of. The spool 4 is positioned at the insertion position of the transport path with the key 20 facing 90 ° to the left. The robot hand 52 linearly moves to the left as shown in the figure to reach the insertion position, and then descends to press-fit the hole 19d of the ring member 19 into the shaft of the spool 4. At this time, the one edge 19e of the hole 19d and the end surface 4b of the spool 4 are tapered, so that the shaft of the spool 4 and the hole 19a of the ring member 19 follow each other and automatically follow each other. Aligned. Further, at this time, even if the key 20 and the key groove 19b are deviated from each other, since the tip of the key 20 is formed into a round shape, the key groove 19 is handled in a handled state.
The key 20 is invited toward b and the ring member 19 automatically rotates. As a result, the positioning of the key 20 and the key groove 19b can be easily performed by the inexpensive robot hand 52 with rough accuracy, without performing a highly accurate and expensive mechanism.

In the above embodiment, the ring member 19 is provided with the blade 19a which is narrower than the outer shape. However, the present invention is not limited to this, and a ring member having a wide blade may be used. In this case, it is necessary to change the width of the guide groove 31 so that the blade is guided by the guide groove 31. Further, in this case, the bearing portion of the ring member may rotate inside the guide groove 31 and the transport pin 35 or the stop pin 34 may not be inserted into the bearing portion, but the diameter of the transport pin is smaller than that of the bearing portion. There is no problem because it is small.

Further, in the above-mentioned embodiment, the ring member with blades 19 having the cylindrical outer periphery provided with the convex portion is used. However, the present invention is not limited to this, and a member having the cylindrical outer periphery provided with the concave portion may be used. . In the embodiment shown in FIG. 8, a spool 70 is used as a member having a recess on the outer circumference of a cylindrical shape. The spool 70 has a shape in which a flange 72 having a recess 71 is integrally formed on one side of a shaft 73. The shaft 73 is a hollow rod. Even such a spool 70 can be assembled using the device described above. That is, as shown in FIG.
3 and the swivel pin 36 is inserted into the recess 71. As a result, the pivot pin 36 is caught on the edge of the recess 71, and the flange 72 is rotated clockwise about the shaft 73 so as to be aligned in a predetermined direction. The turning angle is in the range of 45 ° to 135 °, and the transport distance is 1
It is 0 to 40 mm.

[0025]

As described above, according to the present invention, the transport pin transports the component in the horizontal direction, and the swivel pin rotates about the transport pin during the transport, so that the convex portion or the concave portion is moved in a certain direction. Since no significant wear occurs, the generation of friction powder can be suppressed to a low level. Therefore, as described in the prior art, it can be used as an assembling device for a photographic film cartridge, a camera, etc. without requiring a cleaning device or the like. Further, it is possible to suppress the occurrence of troubles due to abrasion powder to be low over a long period of time.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a photographic film cartridge.

FIG. 2 is a perspective view showing essential parts of a ring member and a spool.

FIG. 3 is a plan view of the component aligning device.

FIG. 4 is a front view of the component aligning device, showing a guide guide in a cutaway manner.

FIG. 5 is a plan view of the component aligning device with the leading ring components aligned.

FIG. 6 is a plan view of the component assembling apparatus showing a state where the aligned ring components are handled by a robot hand.

FIG. 7 is a perspective view showing an outline of a robot hand.

FIG. 8 is a perspective view showing a recessed spool that can be used instead of the ring member.

FIG. 9 is a plan view showing a state in which a transport pin and a turning pin are inserted into a recessed spool.

[Explanation of symbols]

4b taper 19 Ring member 19a feather 19b keyway 19d hole 19e taper 20 keys 30 supply mechanism 34 Stopping pin as a sorting means 35 Transport pin 36 swivel pin 52 grip 73 axis

Claims (4)

(57) [Claims] 1. A parts aligning device for supplying a large number of ring members each having a convex portion or a concave portion formed on the outer periphery of a ring having a bearing portion and sequentially aligning the ring members in a posture that facilitates assembly, wherein the convex portions or the concave portions are arranged in a predetermined direction. A supply mechanism that supplies the ring members in an aligned state, a partitioning unit that separates only the leading ring member from the following ring member at the end of the supply mechanism, and the ring member that enters the bearing portion of the partitioned ring member. From a transport pin that horizontally transports the carrier, and a swivel pin that abuts the protrusion or the recess and rotates the ring member around the transport pin during horizontal transport of the transport pin to align the protrusion or the recess in a certain direction. A parts aligning device characterized by being configured. 2. The component aligning apparatus according to claim 1, wherein the ring member is an exposure status display plate used as a component of a photographic film cartridge. 3. A shaft having a key provided with a guide protrusion at the tip and a rim of a bearing portion having a key groove for engaging with the key, which is used with the component aligning device according to claim 1. In an assembling device for fitting a ring member as a guiding surface, the guiding surface of the key groove by rotatably gripping the ring member positioned by the component aligning device by a gripping portion and fitting the ring member into the shaft. Is guided by the guiding protrusion of the key, and the ring member is rotated in the gripping portion in a direction in which the key groove is aligned with the key, and the centering is performed by copying. 4. The component assembling apparatus according to claim 3, wherein the ring member is an exposure status display plate for a photographic film cartridge part, and the shaft is a spool around which the photographic film is wound. .