JPH08167794A - Carrying equipment for square-shaped work - Google Patents

Abstract

PURPOSE: To simplify the construction and reduce troubles by forming a plurality of L-shaped recesses at equal intervals on the outer periphery of an index table and by carrying the works supplied to the index table and carrying the works from a supply section to a discharge section by holding the works between the recesses and a fixed guide plate. CONSTITUTION: This equipment comprises an index table rotating intermittently, a supply section for supplying square-shaped works 10 to the index table 60, and a discharge section for discharging works 10 one by one. And assembling and processing are performed for works 10 during the stop of an index table 60. In this equipment, a plurality of L-shaped recesses 63 are provided at equal interval on the outer periphery of the index table 60, and a ring-shaped fixed guide plate 80 facing the outer periphery of the index table 60 is provided from the supply section to the discharge section. And the work 10 supplied to the index table 60 is maintained between the recess 63 and the fixed guide plate 80 for carrying.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device for rectangular parts such as small electronic parts, and more particularly, to an index table that rotates intermittently, and performs an assembly process on a work when the index table is stopped. The present invention relates to the configuration of a transfer device.

[0002]

2. Description of the Related Art A conventional conveying apparatus of this type is constructed as shown in FIG. Eight chucks 21 are provided around the index table 20 which rotates intermittently.
The chuck 21 includes a groove 22 and a holding plate 23 attached to the side of the groove 22.
And a spring 24 for urging the pressing plate 23 in the direction of the groove 22. The rectangular work 10 is supplied into the groove 22 of the chuck 21 through the supply chute 30 and is held by the pressing plate 23 which is urged toward the groove 22 by the force of the spring 24 as shown in FIG. The supply chute 30 includes a belt conveyor 31 that arranges the works 10 in a line and sends them to the left in FIG. 7, and a pusher 32 that reciprocates in the supply chute 30 in the arrow direction. The works 10 sent in a line are pushed by the pushers 32 one by one and mounted in the grooves 22 of the chuck 21 every time the index table 20 rotates counterclockwise one step in FIG. . Fig. 7 shows the work on seven chucks 21.
10 shows the mounted state. When the index table 20 is stopped, the work 10 is assembled and processed, and each time the index table rotates by one step, the finished work 10 is discharged one by one to the discharge chute 40.

[0003]

In such a conventional structure, the mechanism of the chuck 21 for holding the work 10 is complicated, and the groove 22 is apt to be clogged with dust due to its shape, which may cause a failure. Many. Further, as shown in FIG. 9, there is a problem that the chuck 21 needs to be replaced because the same chuck 21 cannot hold the workpiece 10 as the outer dimension of the work 10 becomes smaller. Further, in order to discharge the work 10 from the index table 20, two systems of movable elements are required, and there is a drawback that the structure is complicated and the cost becomes high.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a square work transfer device which has a simple structure, can easily cope with changes in the outer dimensions of a work, and has few failures.

[0005]

SUMMARY OF THE INVENTION According to the present invention, an index table that intermittently rotates about a shaft, a supply unit that continuously supplies one square work to the index table, and a work from the index table. In a square work transfer device that has a discharge part that continuously discharges one by one and that performs an assembly process on a work when the index table is stopped, a plurality of L-shaped depressions are formed at equal intervals on the outer periphery of the index table. In addition to forming individual pieces, a substantially ring-shaped fixed guide plate facing the outer circumference of the index table is provided at least between the supply part and the discharge part, and the work supplied to the index table is held between the recess and the fixed guide plate. The structure is characterized in that it is conveyed from the supply unit to the discharge unit.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view of an essential part showing an embodiment of a rectangular work carrier according to the present invention. The index table 60 mounted on the base 50 has an L
The disk portion 62 includes a first disk portion 61 in which a plurality of shape-shaped recesses 63 are provided in the outer peripheral portion at equal intervals, and a second disk portion 62 having a diameter larger than that of the disk portion 61. The disc portion 61 is superposed and fixed on. The index table 60 performs an intermittent rotary motion in which a motor and an indexing mechanism (not shown) repeatedly rotate and stop counterclockwise about the shaft 65, and stops so that the respective recesses 63 always come to fixed positions.
Since the index table 60 of the embodiment has eight recesses 63, the index table 60 carries out an intermittent rotary motion of stopping every ⅛ rotation.

A discharge chute 70 having a passage through which the workpieces 10 can pass in a line, and a discharge piece 71 projecting above the disc portion 61 along the longitudinal direction of the passage are fixedly provided on the base 50. . In addition, a supply chute with the same structure as the conventional one that supplies the works 10 to the index table 60 one by one.
30 is attached to the base 50. Index table 60
The discharge chute from the supply chute 30 along the rotation direction of the
Between the 70, a substantially ring-shaped fixed guide plate 80 is provided fixed to the base 50 so as to face the outer peripheries of the disk portions 61, 62. The fixed guide plate 80 is made of a material such as nylon resin, which has abrasion resistance and low friction, because the work 10 comes into contact with the inside of the fixed guide plate 80. The fixed guide plate 80 may not face the lower disk portion 62.

Numeral 90 is a positioning pin which can be moved forward and backward in the direction toward the center of the shaft 65 of the index table 60 through a hole 81 formed in the fixed guide plate 80. The positioning pin 90 is biased by the spring 95 toward the center of the shaft 65, and moves by the force of the spring 95 when moving forward. Although illustration is omitted, when the positioning pin 90 retracts, it is configured to be pushed back against the spring 95 by the force of the air cylinder or the like. In this embodiment, positioning pins 90 are provided at three positions facing the depression 63 of the index table 60 when stopped. Locating pin 90
The work 10 is clamped by the force of a spring 95 between an L-shaped concave portion 91 formed at the tip of the and having two surfaces formed at a right angle and a recess 63 of the disc portion 61. When the number of processing items for the work 10 is small, only one positioning pin 90 may be provided.

Next, the operation of the rectangular work transfer device configured as described above will be described. The works 10 sent in a line on the belt conveyor 31 are pushed by the pushers 32 one by one each time the index table 60 rotates counterclockwise one step in FIG. It is placed on the second disc portion 62 from 30 and fed into the recess 63 of the first disc portion 61. Index table
60 repeats 1/8 rotation and stop alternately, and the work 10 is intermittently fed counterclockwise while being mounted on the disc portion 62. The work 10 on the disc portion 62 is fixed to the recess 63 and the fixed guide plate of the disc portion 61 from the supply chute 30 to the discharge chute 70.
It is sandwiched between 80 and held so as not to jump out of the recess 63. The workpiece 10 that has come to the position of the positioning pin 90 moves forward when the index table 60 is stopped.
It is sandwiched between the recess 91 and the recess 63 of 90. The work 10 is pressed against the recess 63 and accurately positioned, and subjected to assembly processing such as application of an adhesive, soldering or welding.

When the assembly processing is completed, the three positioning pins 90 are retracted to positions outside the inner surface of the fixed guide plate 80, and the index table 60 is rotated by one step again. In the case of this embodiment provided with three positioning pins 90, each work 10 is sequentially assembled at three stop positions. When the work 10 that has been completely assembled and processed reaches the position of the discharge chute 70, the work 10 hits the discharge piece 71 as shown in FIG. 2 and is pushed by the recess 63 of the disc portion 61 to discharge. It is sent into the shoot 70. Each time the index table 60 rotates by one step, the processed workpieces 10 are continuously discharged one by one to the discharge chute 70 in a constant orientation. As shown in FIG.
The component 10 is pushed into the discharge chute 70 by the component force P ₁ of the force P in the circumferential direction applied by the disc portion 61. If the work 10 has a weight of about 30 g, 100 or more pieces can be continuously extruded through the discharge chute 70 with a component force P ₁ of about 1 kg without damaging the metal or resin case.

FIG. 4 shows, for example, a square work 10 having a side of 7 mm.
a is an L-shaped recess of the recess 63 of the disc portion 61 and the positioning pin 90.
The state held between 91 and 91 is shown. At this time, as the fixed guide plate 80a, the work 10 pressed into the recess 63 is used.
The inner diameter is such that the inner surface does not touch. On the other hand, FIG. 5 shows a state in which the work 10b having a side of 5 mm is held by the recess 63 and the positioning pin 90, and at this time also, the fixed guide plate having an inner diameter such that the inner surface does not touch the work 10 pressed into the recess 63. I am using 80b. That is, when the work 10 is 5 mm square, the fixed guide plate 80b having a smaller inner diameter by the difference in the diagonal dimension of the work 10 than in the case of 7 mm square.
Is used. Also, in FIG. 6, as in FIG. 5, one side is 5 m.
The work 10b of m is held by the recess 63 and the positioning pin 90. However, in FIG. 6, the same fixed guide plate 80a as in FIG. 4 is used, and the disk portion 61 is replaced to cope with the small work 10b. That is, FIG.
In comparison with the disc portion 61 in the above case, the disc portion 61b is used in which the inner portion of the recess 63 is closer to the fixed guide plate 80a by the difference in the dimension of the workpiece 10 in the diagonal direction. in this way,
In the square work transfer device according to the present invention, when the size of the work 10 is changed, the disk portion 61 or the fixed guide plate 80 having a simple structure is replaced instead of replacing the chuck having a complicated mechanism as in the conventional case. You can deal with it.

[0012]

According to the present invention, since there is no chuck for sandwiching and fixing each work, and the work is simply engaged with the L-shaped recess whose outside is open, the work holding mechanism is simple. It is easy to manufacture, and there is no failure due to dust clogging. Although the embodiment has been described using an example of an 8-division index table, a large simplification of the mechanism can be achieved by using multiple divisions of about 30 to 50 divisions.
Further, the finished work can be aligned and sent into the discharge chute by the driving force of the index table without newly providing a separate drive source.
Workpieces having different outer dimensions can be easily coped with by exchanging the disc portion or the fixed guide plate of the index table having a simple structure.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional plan view showing an embodiment of a rectangular work carrier according to the present invention.

FIG. 2 is an enlarged perspective view of the main part of the apparatus.

FIG. 3 is an enlarged plan view of the main part of the apparatus.

FIG. 4 is a partial sectional plan view showing a first holding example of a work.

FIG. 5 is a partial sectional plan view showing a second example of holding a work.

FIG. 6 is a partial sectional plan view showing a third example of holding a work.

FIG. 7 is a plan view of a main part of a conventional transfer device.

FIG. 8 is an enlarged plan view of a conventional chuck portion.

FIG. 9 is an enlarged plan view of a conventional chuck portion.

[Explanation of symbols]

 60 Index table 61 1st disc part 62 2nd disc part 63 Recess 70 Discharge chute 71 Discharge piece 80 Fixed guide plate 90 Positioning pin

Claims (4)

[Claims] 1. An index table that intermittently rotates about an axis, a supply unit that continuously supplies a square work piece to the index table, and a work piece that is continuously discharged from the index table. In a square work transfer device that is equipped with a discharge unit that performs assembly processing of a work when the index table is stopped,
A plurality of L-shaped depressions are formed at equal intervals on the outer circumference of the index table, and a substantially ring-shaped fixed guide plate facing the outer circumference of the index table is provided at least between the supply section and the discharge section to supply the index table. A conveyance device for a rectangular work, characterized in that the formed work is held between the recess and a fixed guide plate and is conveyed from a supply unit to a discharge unit. 2. A positioning pin, which has an L-shaped recess at its tip and is capable of advancing and retracting in the direction toward the center of the axis of the index table, faces the recess on the outer periphery of the index table when stopped. 2. The square work transfer device according to claim 1, wherein the work is clamped at a position such that the work can be held by the recess and the recess. 3. The index table comprises a first disc portion having an L-shaped recess on the outer periphery thereof, and a second disc portion having a diameter larger than that of the first disc portion. The disc part of the second
2. The apparatus for transporting a rectangular work according to claim 1, wherein the work is placed on the second disk portion by fixing the work on the second disk portion. 4. A discharge chute having a passage through which works can pass in a line and a first chute along the longitudinal direction of the passage.
Equipped with a discharge piece protruding to the top of the disc part of
4. The square work transfer device according to claim 3, wherein when the index table rotates, one work on the index table hits the discharge piece and is discharged into the passage of the discharge chute.