JP2558392Y2 - Connection screw loading device for screw tightening machine for connection screw - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a connecting screw loading device for loading a connecting screw into the above-mentioned magazine, in a connecting screw screwing machine provided with a magazine for guiding and guiding the connecting screw to a screw supply mechanism of the screw tightening machine main body. About.

[0002]

2. Description of the Related Art In general, as a screw tightening machine using a connecting screw formed by holding a large number of screws at equal intervals on a connecting band made of synthetic resin, a connecting screw supported by a long flexible connecting band is used. Are known, and those using connecting screws that are not too long are known. 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. In contrast, the latter
A magazine shorter than the total length of the connecting screw is installed in the screw tightening machine main body so that the connecting screw does not move freely so as not to hinder the screw tightening operation.

[0003] In the latter magazine, a guide path for guiding and guiding the connecting screw is formed in a bent shape, and openings at both ends of the guide path are formed as an inlet and an outlet for the connecting screw, and when the connecting screw is loaded. Is to insert one end thereof from the entrance side along the guide path of the magazine, pull out from the exit side, and load the screw supply mechanism.

[0004] However, when the connecting screw is pushed into the magazine from the entrance of the guide path when loading the connecting screw into the magazine, the guide path is bent in an L-shape or a U-shape, so that the screw of the connecting screw is not formed. In addition to the push resistance being increased by being caught in the middle of the guide path, the connecting screw is configured to bend as a whole, so the rigidity of the connecting band is low and the waist is weak. There has been an example in which the connecting screw cannot be loaded in the magazine due to being jammed.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and enables the connecting band to be easily inserted even in a magazine having a bent guide path or a connecting screw having an extremely weak connecting band. It is an object of the present invention to provide a connecting screw loading mechanism that can be guided from the to the outlet.

[0006]

In order to achieve the above object, the connecting screw loading mechanism of the connecting screw screwing machine according to the present invention sequentially supplies the connecting screw supported by the connecting band to the tip of the driver bit. For a connecting screw provided in a screw tightening machine body having a screw supplying mechanism, the magazine having a guide path for guiding and guiding the connecting screw toward the screw supplying mechanism, the magazine being formed shorter than the entire length of the connecting screw. In the screw tightening machine, a guide groove extending from the vicinity of one open end of the guide path along the guide path to the vicinity of the other open end of the guide path is formed through one of the side walls of the guide path of the magazine, In the guide groove, a slide rod which is normally disposed at a position retracted from the connection screw guide path and which can be engaged with the connection screw in the guide path by projecting into the guide path is provided. Slidably provided along the groove, the the slide rod is characterized in that the mounting slide buttons capable of movement operation along the guide groove with protruded externally on the guide path.

[0007]

According to the above construction, when loading the connecting screw, the magazine is inserted slightly from one open end of the magazine along the guide path and then the slide button is pushed in to operate the slide rod. Protrudes into the guide path, and its tip protrudes between the screw shafts of the adjacent connecting screws. Therefore, the connecting screw can be further advanced by moving the slide button along the guide groove in the advancing direction of the connecting screw to engage and press the slide rod with the screw shaft of the connecting screw. When the slide button is moved to the end of the guide groove in this manner, the connecting screw has entered at least to a position beyond the bent portion of the guide path. By pressing, the connecting screw can be easily pulled out of the magazine to complete the loading.

[0008]

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. A magazine 2 is provided.

The connecting screw 1 is formed by connecting a large number of screws P to a connecting band 1a made of synthetic resin. The connecting band 1a is formed with screw insertion openings at equal intervals. Inserted and supported.

The magazine 2 is a member having a hollow inside and curved in a substantially L-shape. The magazine 2 is formed to be shorter than the entire length of the connecting screw 1 and guides the connecting screw toward the screw supply mechanism b. Are formed. As shown in cross section in FIG. 2, the guide path 5 is composed of a wide guide portion 5a for guiding the connection band 1a and a narrow guide portion 5b for guiding the screw shaft portion P1.
Are supported so as to run freely while maintaining a predetermined posture in the guide path 5. One end 7a of the guide path 5 is arranged so as to open 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. Have been.

Next, one of the side walls of the guide path 5 of the magazine has a guide groove extending along the guide path 5 from near one open end of the guide path 5 to near the other open end of the guide path 5. 8 are formed through. And the guide groove 8
Is provided with a slide rod 9 slidably. The guide groove 8 is bent along the guide path 5, and a guide wall 10 is formed outside the guide groove 8. A slide button 11 is attached to the outside of the slide rod 9. The diameter of the shaft portion 12 of the slide button 11 is
It is formed so that it can be inserted inside 0,
A washer 1 is provided between the bottom surface of the shaft 12 and the groove edge of the guide groove 8.
A compression spring 14 is attached via the third spring 3. As a result, the slide rod 9 is normally disposed at a position retracted from the guide path 5 and the slide button 1
1 can be pushed into the guide path 5 by pushing, and the slide rod 9 can be moved along the guide groove 8 by pushing the slide button 11 in the direction along the guide groove 8.

In the above configuration, when the connecting screw 1 is loaded, the magazine 2 is inserted slightly from one open end along the guide path 5 and then the slide button 11 is pushed in. Projecting into the passage 5, the tip of which is the screw shaft portion P of the adjacent connecting screw 1.
Protrude between one. Then, the slide button 11 is moved along the guide groove 8 in the entry direction of the connection screw 1 to engage and press the slide rod 9 with the screw shaft portion P1 of the connection screw 1 so that the connection screw 1 is further advanced. Can be done. When the slide button 11 is moved to the end of the guide groove 8 in this manner, since the connecting screw 1 has entered at least to a position beyond the bent portion of the guide path 5,
Thereafter, by retracting the slide rod 9 from the guide groove 8 and pushing in the connection screw 1, the connection screw 1 can be easily drawn out from the other open end of the magazine 2 and loaded.

[Brief description of the drawings]

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

FIGS. 2A and 2B are cross-sectional views taken along line XX of FIG.

[Explanation of symbols]

 A Screw tightener body a Screw supply mechanism P screw 1 Connecting screw 2 Magazine 5 Guide path 8 Guide groove 9 Slide rod 11 Slide button

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 and guiding the connecting screw toward, wherein one of the side walls of the guide path of the magazine extends along the guide path and at one open end of the guide path. A guide groove extending from the vicinity to the vicinity of the other open end of the guide path is formed to penetrate, and is arranged in the guide groove at a position normally retracted from the guide path for the connecting screw and projected into the guide path. A slide rod engageable with a connection screw in the guide path is slidably provided along the guide groove. Fitted with a slide button that can move operation What connecting screw loading apparatus screwing machine connecting screw, characterized in.