JP2558391Y2 - Connection screw holding device of screw tightening machine for connection screw - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a screw tightening machine for a connecting screw provided with a magazine for guiding a connecting screw to a screw supplying mechanism of a screw tightening machine main body. The connecting screw protruding from the magazine is held and hangs down. The present invention relates to a connecting screw holding device for preventing the occurrence of a screw.

[0002]

2. Description of the Related Art Generally, as a screw tightening machine using a connecting screw, there are known those using a connecting screw supported by a long flexible connecting band and those using a connecting screw which is not so long. Have been. The former is wound around a disk-shaped magazine, and the connection screws are sequentially fed to the tip of the driver bit while being rewound from the magazine so that the screws are continuously tightened. On the other hand, in the latter, a magazine having a guide guideway shorter than the entire length of the connecting screw is installed in the body of the screw tightening machine, so that the connecting screw does not move freely due to the multiple directions of the screw being screwed. Try not to be an obstacle.

However, in the case of using the latter relatively long connecting screw, the rear end of the connecting screw hangs down from the entrance of the magazine for a while after the screw closing operation is started, so that the work becomes difficult for the screw tightening operation. Or inhibit
A part of the hanging connecting band is twisted and engages with the opening of the magazine, which prevents the connecting screw from entering the guide path, and there is a problem that a screw supply defect occurs.

[0004]

The object of the present invention is to solve the above-mentioned drawbacks and to greatly improve the screw tightening work by holding the rear end of the connecting screw in a magazine to prevent drooping, and to improve the rear end of the connecting band. The present invention provides a connection screw holding device of a screw tightening machine for a connection screw, in which the holding screw is reliably released without applying a large load when drawn into the guide path of the magazine and the connection screw can enter the guide path of the magazine. Its purpose is to

[0005]

In order to achieve the above object, a connecting screw holding device of a connecting screw screwing machine according to the present invention is a screw for sequentially supplying a connecting screw supported by a connecting band to a tip of a driver bit. A screw for a connecting screw provided in a screw tightening machine body having a supply mechanism, the magazine being formed shorter than the entire length of the connecting screw and having a guide path formed therein for guiding and guiding the connecting screw toward the screw supply mechanism. In the tightening machine, one end of the guide path is disposed so as to open near the screw supply mechanism of the screw tightener main body, and the other end of the guide path has a screw supported by a screw connection band. A holding member having an enlarged-diameter head is projected from a portion corresponding to the head side of the connecting band, and the holding member is penetrated and supported by a screw insertion opening at a rear end of the connection band.

[0006]

According to the above construction, when the connecting screw is mounted, the screw is inserted along the guide path from the opening on the holding member side of the magazine, and is drawn out from the opening on the opposite side. What is necessary is just to arrange in the screw supply mechanism of a main body. And
The portion protruding from the magazine is supported by opening the screw insertion opening at the rear end of the connection band, and penetrating the retaining member through the opening.

When the screw tightening work is performed in the above-mentioned supporting state,
The portion of the connection screw that protrudes from the magazine is formed in a loop shape and is hooked and supported by the holding member at the end of the magazine, so that the hanging down is prevented. In addition, the screw insertion opening of the connecting band engages with the enlarged diameter head of the holding member and is not easily detached, so that the rear end of the connecting screw is held well. Accordingly, since the protruding portion of the connecting screw hangs down and does not move freely, the screw tightening operation is not impaired, and the working efficiency is greatly improved.

In the case where the holding member is passed through the screw insertion opening of the connecting band, the holding member is penetrated so as to protrude on the same side as the screw head of the connecting band and protrudes from the magazine. By connecting the connecting screw part to form a loop, the consumption of the connecting screw progresses and the diameter of the loop of the protruding part of the connecting screw decreases, and the deformation of the part hooked on the holding member of the connecting band increases. Also, the screw insertion opening is greatly deformed and expanded. For this reason, the holding by the holding member is easily and reliably released without applying a large load, the connecting band is separated from the holding member, and the last part of the connecting screw enters the guide path of the magazine. Therefore, there is no possibility that the supply failure of the screw occurs.

[0009]

FIG. 1 shows a screw tightening machine for connecting screws.
The screw tightening machine guides the connecting screw 1 to the screw feeding mechanism to a screw tightening machine main body A provided with a screw feeding mechanism b for sequentially supplying the connecting screw 1 supported by the connecting band to the tip of the driver bit a. Magazine 2 is provided.
The holding member 3 provided at the end of the magazine 2 constitutes a connecting screw holding device.

The connecting screw 1 is formed by connecting a number of screws P to a connecting band 1a made of synthetic resin. The connecting band 1a is formed with screw insertion openings 4 (see FIG. 3) at equal intervals. The screw P is inserted into the opening 4 and supported.

The magazine 2 is a member whose inside is hollow and curved in an approximately L-shape, and is formed to be shorter than the entire length of the connecting screw 1 and guides the guiding screw 5 therein for guiding the connecting screw 1 toward the screw supply mechanism. Are formed. As shown in cross section in FIG. 2, the guide path 5 includes a wide guide portion 5a for guiding the connection band 1a and a narrow guide portion 5b for guiding the screw shaft portion. It is supported movably while maintaining a predetermined posture in the guide path 5. Further, since the magazine 2 is shorter than the connection screw 1, the rear portion of the connection screw 1 protrudes from the rear end of the magazine 2.

Next, one end 7a of the guide path 5 has an opening near the screw supply mechanism b of the screwdriver body A so that the connecting screw 1 can be guided to the screw supply mechanism b of the screwdriver body A. It is arranged to be.

On the other hand, in the opening 7b at the other end of the guide path 5, a holding plate 8 is formed at a position corresponding to the head P1 side of the screw P supported by the connecting band 1a. The holding member 3 protrudes outside the plate 8. Holding member 3
As shown in FIG. 3, has an enlarged diameter head 3a and a tapered lower surface 3b, and is formed in a pin shape as a whole. Further, the holding plate 8 is formed with convex wall-shaped guide walls 9 on both sides of the holding member 3. The space between the two guide walls 9 is formed to be slightly larger than the connecting band 1a, and the connecting band 1a is formed so as to be guided between the guide walls 9 and the direction thereof is regulated. Note that the direction of the connecting band 1a is not limited to the guide wall 9. It may be performed by other appropriate means.

In the above construction, when the connecting screw 1 is to be mounted, it is inserted along the guide path 5 from the opening 4 on the holding member 3 side of the magazine 2 and is led out from the opening 7a on the opposite side. What is necessary is just to arrange in the screw supply mechanism b of the main body A. The portion protruding from the magazine 2 is supported by opening the screw insertion opening 4 at the rear end of the connection band 1a and penetrating the holding member 3 therethrough. When the holding member 3 is penetrated through the screw insertion opening 4 of the connecting band 1a, it is preferable that the enlarged diameter head 3a of the holding member 3 penetrates so as to project on the same side as the screw head P1 of the connecting band 1a. .

When the screw tightening operation is performed in the above-mentioned supporting state,
The portion of the connecting screw 1 that protrudes from the magazine 2 is formed in a spiral loop shape centered on the rear end 10 and is hung and supported by the holding member 3 at the end of the magazine 2. Never hang down. Connecting belt 1
Since the screw insertion opening 4a engages with the enlarged diameter head 3a of the holding member 3 and is not easily detached, the rear end 1
0 is well maintained. Moreover, the rear end 1 of the connecting band 1a
The guide screw 9 is guided and held by the guide wall 9 of the holding plate 8, so that the connecting screw 1 is effectively prevented from rotating around the holding member 3. Thereby, since the protruding portion of the connecting screw 1 hangs down and does not move freely, the screw tightening operation is not impaired, and the working efficiency is greatly improved.

The connecting screw 1 is fed forward by the screw supply mechanism b of the screw tightener body A. When the consumption of the connecting screw 1 is advanced and the rear part of the connecting band 1a is about to be drawn into the guide path 5 of the magazine 2, as shown by a dotted line in FIG. The diameter becomes smaller. In this case, the holding member 3 is the enlarged head 3a.
Penetrates through the screw insertion opening 4 of the connection band 1a so as to protrude to the same side as the screw head P1 of the connection band 1a, the deformation of the portion of the connection band 1a hooked on the holding member 3 is large. Therefore, when the loop becomes small, the screw insertion opening 4
Is also greatly deformed and expanded. Further, a taper 3b is formed on the lower surface of the enlarged diameter head 3a of the holding member 3. Therefore, even if a large load is not applied, the retaining member 3 is securely released and the connecting band 1a is easily separated from the retaining member 3 and the rear part of the connecting screw 1 enters the guide path 5 of the magazine 2. Therefore, there is no possibility that the supply failure of the screw P occurs.

The holding member 3 may be formed toward the guide path as shown in FIG. Also in this case, connecting screw 1
Is preferably penetrated so that the enlarged diameter head 3a of the holding member 3 projects on the same side as the screw head P1 of the connection band 1a.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a connecting screw holding device of a screw tightening machine according to the present invention.

FIG. 2 is a cross-sectional view taken along line XX of FIG.

FIG. 3 is a plan view of a connecting band.

FIG. 4 is an explanatory view of another example of the connection screw holding device.

[Explanation of symbols]

 Reference Signs List A Screw tightener body a Screw supply mechanism P screw 1 Connecting screw 2 Magazine 3 Holding member 3a Enlarged diameter head 4 Screw insertion opening 5 Guide path

Claims (1)

(57) [Scope of request for utility model registration] 1. A screw tightener having a screw supply mechanism for sequentially supplying a connection screw supported by a connection band to a tip of a driver bit, wherein the screw supply mechanism is formed shorter than the entire length of the connection screw and is internally provided. A connecting screw screwing machine provided with a magazine formed with a guide path for guiding the connecting screw toward, wherein one end of the guide path is arranged so as to be opened in the vicinity of a screw supply mechanism of the screw tightening machine body; A holding member having an enlarged diameter head is provided at a position corresponding to a head side of the screw supported by the screw connection band at an opening at the other end of the guide path, and a rear end of the connection band is provided. A connecting screw holding device for a connecting screw screw tightening machine, wherein the holding member is penetrated and supported by the screw insertion opening of (1).