JPH05262310A - Production of tape-connection screw and apparatus - Google Patents

Abstract

PURPOSE:To increase a production efficiency, by feeding screws to a tape having through holes for the screws so as to gradually and parallelly approach the tape from the front end of the screws toward the through holes in order to insert the screw front into the through hole, in the tape-connection screws for auto-screwing. CONSTITUTION:A screw head is fitted to the groove of a chuter 13 of a feeder 10 for screws and suspended to feed to a conveyor 20 by turn. On the other hand a tape 4 is fed from a tape feeder 60 on the tape-pushing belt 41 under the screws of the conveyor 20. The conveyor 20 is composed of a couple of screw conveyors 21, 22 which continuously transfer the screws one by one and pushes down them to the tape 4 side with a screw-pushing belt 40. Since the tape 4 is pressed from the downside by the pushing belt 41, the head of screw gradually approaches the tape 4 and it finally is inserted into the through hole of the tape 4 for the screws.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a tape connecting screw used in an auto screw for automatically driving a screw.

[0002]

2. Description of the Related Art FIG. 9 shows an auto screw 1 for automatically driving a screw. As shown in the figure, a tape connecting screw 3 having a large number of screws 2 is attached to the tip of the auto screw 1. I am doing it. As shown in FIG. 10, the tape connecting screw 3 has a structure in which a large number of screws 2 are attached to the tape 4. That is, as shown in FIG. 11, a large number of through holes 5 for attaching the screws 2 are formed in the tape 4 at intervals of the length L1, and the screws 2 are inserted into the through holes 5 from the tip portion 6 respectively. By passing through and engaging the head portion 7, a tape connecting screw 3 in which a large number of screws 2 are attached to the tape 4 at a constant interval L1 as shown in FIG. 10 is manufactured. It should be noted that several (four in the embodiment) around the through hole 5.
Slits 8 are formed radially. As shown in FIG. 9, when the tape connecting screw 3 as described above is attached to the tip of the auto screw 1 and the switch 9 is turned on, the tape connecting screw 3 is sequentially fed upward to the tip of the auto screw 1. Is continuously supplied with screws 2, and the screws 2
The head 7 is twisted with an electric screwdriver inside the auto screw 1, and the screw 2 is driven into a wall or the like. When the screw 2 is driven, the slit 8 is torn and the screw 2 is smoothly detached from the tape 4. In order to manufacture the above-described tape connecting screw 3, conventionally, the tape 4 is intermittently moved according to the interval of the through holes 5, and the screws 2 are dropped from above the through holes 5 of the tape 4 stopped at a predetermined position. After that, the head 7 of the screw 2 is hit with a cylinder to attach the screw 2.

[0003]

However, it is impossible to continuously manufacture the tape connecting screw by the means for intermittently moving the tape as in the prior art. Therefore, it takes a long time to mass-produce, and the tape connecting screw cannot be efficiently manufactured.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above technical problems and to obtain means for continuously and efficiently manufacturing a tape connecting screw. In order to achieve such an object, the screws are supplied in parallel with the tape having the through holes of the screws formed at regular intervals, and the tips of the screws are directed toward the through holes, and one screw is provided at each interval of the through holes. The present invention has invented a method for manufacturing a tape-connecting screw, which is characterized in that screws are continuously conveyed, the tape and the screw are gradually brought closer to each other, and the tips of the screws are sequentially inserted into the through holes. Also,
In order to carry out such a method, the screws are supplied in parallel with the tape in which the screw through holes are formed at regular intervals, and the tips of the screws are directed toward the through holes so that one screw is provided at each interval. An inventor of a tape-connecting screw manufacturing apparatus has been invented, which is provided with a conveying means for continuously conveying the tapes one by one and a guide means for guiding the tape and the screw so that the distance between the tape and the screw is gradually reduced.

[0005]

Operation: While the screws are conveyed in parallel along the tape, the distance between the screws is gradually approached to bring the tip of the screw closer to the through hole of the tape, and the screw is inserted into the through hole to manufacture the tape connecting screw. The tape connecting screw as described above is efficiently manufactured by the supply device of the present invention.

[0006]

EXAMPLES Examples of the present invention will be described below. First, the manufacturing apparatus will be described. 1, 2, and 3 are a front view, a plan view, and a right side view of a manufacturing apparatus according to the present invention. Reference numeral 10 denotes a conventionally known screw feeder (part feeder), and a large amount of screws 2 are contained in a ball 11 provided above the screw feeder 10. In the conventionally known screw feeder 10 as described above, the vibration of the ball 11 causes
Is fed in the outer peripheral direction of the case, and thus the screw 2 is fitted from the tip 6 into the groove 12 provided on the peripheral edge of the ball. Thus, the screw head 7 engages with the upper surface of the groove 12, and the screw 2 hangs downward as shown in FIG. 1, and thus the screw 2 with the tip 6 directed downward is the next shooter. 13 are sequentially supplied.

FIG. 4 is a perspective view of the shooter 13. As shown in the drawing, the left and right pressing plates 15 and 16 are arranged so as to form a gap 14 at an interval through which the screw 2 can pass. The screw 2 sent from the groove 12 of the screw supplier 10 is fitted into the gap 14 while the head 7 is engaged with the upper surfaces of the left and right pressing plates 15 and 16, and the shooter is retained while hanging downward. It moves downward according to the inclination of 13 and is supplied to the next conveying means 20. A stopper 17 for preventing the screw 2 from coming off is provided above the gap 14.

As shown in FIG. 2, the conveying means 20 comprises two screw conveyors 21 arranged in parallel on the left and right,
22 is provided. Figure 4 shows these screw conveyors 2.
1 and 22 are plan views of the left and right screw conveyors 21 and 22, and spiral grooves 23 and 24 are formed in the peripheral surfaces of the left and right screw conveyors 21 and 22 so as to spiral in opposite directions. Each of these spiral grooves 23 and 24 has a semicircular concave cross section, and when both the conveyor grooves 21 and 22 are closely aligned and aligned as shown in the drawing, the spiral grooves 23 and 24 are spirally arranged. By combining the grooves 23 and 24, circular holding holes 25 are formed at regular intervals. The diameter of the holding hole 25 is large enough to allow the screw 2 to pass but not the screw head 7. The distance between the holding holes 25 is set to be the same length L1 as the distance between the through holes 5 of the tape 4 described above with reference to FIG. As shown in FIGS. 1 to 3, the rotation of the motor 28 is transmitted to the tips of the drive shafts 26 and 27 of the screw conveyors 21 and 22. That is, the timing pulley 30 of the drive shaft 29 of the motor 28 and the timing pulley 32 at the tip of the input shaft 31 are interlocked by the timing belt 33, and the gear 34 at the rear end of the input shaft 31 and the gear 35 at the tip of the drive shafts 26 and 27, 36 meshes. With the above configuration, when the motor 28 operates, the drive shaft 2
6 and 27 rotate in opposite directions, which results in FIG.
The holding hole 25 between the spiral grooves 23 and 24 shown in FIG. 2 advances in the direction of the arrow.

The screw conveyors 21 and 2 as described above
Guide means composed of a screw pressing belt 40 and a tape pressing belt 41 are provided above and below 2. FIG. 6 is a side view of the screw conveyors 21 and 22, and as shown in the figure, the lower surface of the screw pressing belt 40 is the screw conveyors 21 and 2.
It is formed so as to slightly incline toward the tip while pressing the upper part of 2. Further, the upper surface of the tape pressing belt 41 is formed horizontally so as to press the lower surfaces of the screw conveyors 21 and 22. As shown in FIGS. 1 to 3, the rotation of the input shaft 31 is transmitted to the output shafts 44 and 45 via the bevel gears 42 and 43, and the belts 46 and 47 rotate the screw pressing belt 40 and the tape pressing belt 41, respectively. It is being transmitted.

Further, although not shown, a screw pushing means is provided on the right side of the conveying means 20. The screw pushing means pushes the tape 4 from below while pushing the head 7 of the screw 2 inserted halfway into the through hole 5 of the tape 4 by the transporting means 20 from below while pushing up the tape 4 from below to the through hole 5 of the tape 4, as will be described later. The screw 2 is completely inserted. 7 and 8 show the screw pressing means 50 as described above.
FIG. 7 shows a structure in which a screw pressing roller 53 and a tape pressing member 54 are vertically arranged, and the head 7 of the screw 2 is pressed by the tape pressing member 54 while supporting the tape 4 from below. The screw 2 is pushed down from above by the roller 53 so that the screw 2 is completely inserted into the through hole 5 of the tape 4. 8 shows a structure in which a vertically movable screw pressing member 56 is disposed above the tape pressing member 55, and the screw pressing member 56 is supported with the tape pressing member 55 supporting the tape 4 from below. Is pushed down and the screw 2 is pushed down.

Further, as shown in FIG. 1, there is a tape supply unit 60 below the screw supply unit 10, and this tape supply unit 6
The tape 4 fed from the roll 61 inside the 0 is fed from below the shooter 13 in this order to the conveying means 20 and the screw pressing means 50. The tape 4 passes between the screw conveyors 21 and 22 and the tape pressing belt 41 in the conveying means 20 and passes through the screw pressing means 5
At 0, the screw pressing roller 53 (the screw pressing member 5
6) and the tape pressing member 54 (55).

Next, the manufacturing method of the present invention will be described based on the manufacturing apparatus having the above-mentioned structure. First, Fig. 1
As shown in FIG. 5, in the screw feeder 10, the screw 2 is fed in the outer peripheral direction of the ball by the vibration of the ball 11, and the screw 2 is fitted into the groove 12 provided in the peripheral edge of the ball. In this way, the screw head 7 is engaged with the upper surface of the groove 12, and the screw 2 with the tip 6 facing downward is sequentially supplied to the shooter 13. The screw 2 supplied to the shooter 13 moves downward along the inclination of the shooter 13 through the gap 14 between the left and right holding plates 15 and 16, and the next conveying means while keeping the tip 6 downward. 20. On the other hand, the tape 4 fed from the tape supply unit 60 is conveyed by the transport means 2.
0 and screw pressing means 50 are supplied in this order, and the conveying means 2
At 0, the tape 4 passes between the screw conveyors 21 and 22 and the tape pressing belt 41, and at the screw pressing means 50, passes between the screw pressing roller 53 (the screw pressing member 56) and the tape pressing member 54 (55). Is supplied.

Next, in the conveying means 20, the left and right screw conveyors 21, 22 are operated by the operation of the motor 29.
Rotate opposite to each other, and as shown in FIG. 4, the holding hole 25 formed by the spiral grooves 23 and 24 advances in the arrow direction, and the screw 2 transferred from the tip of the shooter 13 is held. It fits into the hole 25 and is sequentially conveyed in the direction of the arrow. Here, since the diameter of the holding hole 25 allows the screw 2 to pass through but the screw head 7 does not pass through, the screw 2 fitted in the holding hole 25 has the head 7 held by the screw conveyors 21, 22. The upper end of the screw is engaged and held in the holding hole 25 while keeping the screw tip 6 downward. In this way, the screw 2 has the tip 6 at the screw conveyor 2
In a state of projecting to the lower side of the Nos. 1 and 22, the screw conveyors 21 and 22 are conveyed in the arrow direction (to the right) in FIG. Thus, from the tip of the shooter 13 to the holding hole 2
Although the screws 2 are sequentially supplied to the screws 5, the screws 2 supplied to the respective holding holes 25 have the length L1 because the distance between the holding holes 25 is L1 as described above.
As the screw conveyors 21 and 22 rotate, they are conveyed rightward while maintaining the interval. The head 7 of the screw 2 conveyed by the screw conveyors 21 and 22 is held by the screw pressing belt 40, and the screw 2 follows the inclination of the lower surface of the screw pressing belt 40 and the tips of the screw conveyors 21 and 22. It is conveyed while descending toward. On the other hand, the tape 4 delivered from the tape supply unit 60 is supplied so as to pass between the screw conveyors 21 and 22 and the tape pressing belt 41,
In this way, the tape 4 is pressed from below by the tape pressing belt 41 and advances horizontally. As described above, the distance between the screw 2 that has been conveyed while descending toward the tips of the screw conveyors 21 and 22 and the tape 4 that has moved horizontally is gradually narrowed, and thus the tip portion 6 of the screw 2 is
Are sequentially inserted into the through holes 5 of the tape 4. As described above, since the distance between the holding holes 25 and the distance between the through holes 5 are the same length L1, the tip portions 6 of the respective screws 2 are smoothly inserted into the through holes 5 without being displaced. Is inserted. Since the screw 2 inserted into the through hole 5 is conveyed by the screw conveyors 21 and 22, the tape 4 is pulled by the screw 2.
It is also possible to omit the conveying means for the tape 4. Thus, the tape 4 in which the screw 2 is inserted into each of the through holes 5 up to the middle is continuously carried out from the front end side of the screw conveyors 21 and 22 as shown in FIG. Finally, in the tape supply unit 60, the screw pressing roller 53
By pressing the tape 4 and the screw head 7 between (the screw pressing member 56) and the tape pressing member 54 (55), as shown in FIG.
The tape connecting screw 3 shown in 0 is manufactured.

[0014]

According to the present invention, the tape connecting screw is manufactured by sequentially inserting the screw into the through hole while conveying the screw and the tape in parallel, so that the tape connecting screw can be continuously and efficiently produced. It can be manufactured. Therefore, it becomes possible to mass-produce the tape connecting screws.

[Brief description of drawings]

FIG. 1 is a front view of a manufacturing apparatus according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a right side view of the same.

FIG. 4 is a perspective view of a shooter.

[Figure 5] Plan view of the screw conveyor

[Figure 6] Side view of the screw conveyor

FIG. 7 is a front view of screw pressing means.

FIG. 8 is a front view of screw pressing means having a configuration different from that of FIG.

FIG. 9 is a front view of the auto screw.

FIG. 10 is a front view of a tape connecting screw.

FIG. 11 is a plan view of the tape.

[Explanation of symbols]

 2 screw 3 tape connecting screw 4 tape 5 through hole 6 screw tip 20 conveying means 21, 22 screw conveyor 40 screw pressing belt 41 tape pressing belt

Claims (2)

[Claims] 1. A screw is provided in parallel with a tape in which through holes of screws are formed at regular intervals, and one end is continuously provided at each interval of the through holes such that the tips of the screws are directed toward the through holes. Then, the screw is conveyed, the gap between the tape and the screw is gradually approached, and the tip of the screw is sequentially inserted into the through hole. 2. A screw is fed in parallel with a tape in which through holes of screws are formed at regular intervals, and one end is continuously provided at each interval of the through holes such that the tips of the screws are directed toward the through holes. An apparatus for manufacturing a tape connecting screw, which is provided with a conveying means for conveying the tape and a screw, and a guide means for guiding the tape and the screw so that the distance between the tape and the screw gradually approaches.