JPH02124275A - Screw driving unit - Google Patents

Abstract

PURPOSE:To naturally eliminate the tangle of a belt and the intertwining of a screw by fitting a belt holding member for holding a screw holding belt at the upper part of a case back face to the upper part of the back face plate of a case freely turnably. CONSTITUTION:A belt holding member 26 is freely turnably fitted to the back face upper part of a sliding guide case 5. Accordingly, a screw holding belt 12 can freely be moved at the screw driving operation time in the state of being held on this belt holding member 26, so the intertwining of a screw 11 at the belt holding member 26 part can be prevented.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a screw driving device that is attached to a driver tool and can be used to continuously drive screws installed in a screw holding belt one by one. In particular, the present invention relates to a screw driving device that can smoothly deliver a screw holding belt to a loading portion of a tool body.

[Traditional branch technique]

T4. Connected to a dynamic dryer tool, as the drive tool is pushed in and out of the workpiece 5, the screws planted on the screw 2 holding belt are continuously fed one by one. Various proposals have been made for screw-driving installation in which a screw is driven into a large member.

In this screw driving installation, as shown in a conventional example in FIG. A moving part 47 is fitted into the case 45 via a return spring 46 so as to be slidable back and forth.

A screw holding belt 5 is attached to the belt loading portion inside the sliding member 47.
A sprocket that meshes with 2 and a ratchet wheel that meshes with this sprocket are provided. In this ratchet wheel, the sliding member 47 is pushed into the case 45, and the bottle 54A protruding from the ratchet wheel is inserted into the slit 48.
Since the sprocket is rotated when passing through the inclined portion 48A, this action causes the screw retaining belt 52 to be transported by one screw section.

At this time, if the sliding member 47 is further pushed into the case 45, a screw can be driven into the member to be driven 62 using a driver bit driven by the driver tool 41. Note that when the sliding member 47 is returned by the biasing force of the return spring 46, only the ratchet wheel idles and returns to its original state.

Incidentally, a belt holding member 66 is attached to the upper back surface of the teeth 45 to allow the long screw holding belt 52 to be held at the upper side of the case 45 and supplied to the belt loading section of the sliding member 47. (This belt holding member 66 has a holding part 66a that holds the belt 52 from both sides, a collar part 66' that guides the belt 52 to this holding part 66a), and a collar part 66' that projects downward from the holding part 66a. The attachment consists of a plate 66c, and the plate 66G is attached to the back plate of the case 45 using screws 69, so that the entire belt holding member 66 is fixed to the case 45.

[Problem to be solved by the invention]

In the conventional screw driving device described above, the bell I/holding member 66 is pressed during the screw driving operation as shown in FIG.
There are cases where the screws 51 get entangled in some parts, and the screws 51 get stuck in the holding part 66a, or the feeding groove 52a of the belt 52 gets caught, making it impossible to feed the screw holding belt 52 to the belt loading part of the sliding member 47. be. Such a problem is likely to occur when the sliding member 47 is pushed into the case 45 in order to drive a screw into the driven member 62. In such a state, the screw 51 remains entangled in the holding portion 65a and returns to the spring. Since the belt 52 is in a state of being strongly pulled by the elastic force of the belt holding member 6, it is not easy to
The blockage in section 6 could not be cleared, which caused a major problem in terms of work efficiency.

The present invention has been proposed to solve these conventional problems, and allows the screw holding belt to be smoothly inserted into the belt loading portion of the sliding member without the screw holding belt becoming jammed at the belt holding member portion. It is an object of the present invention to provide a screw driving device that can be supplied easily.

[Means to solve the problem]

In order to achieve this object, the screw driving device according to the present invention has a belt holding member for holding the screw holding belt at the upper back side of the sliding guide case, which is movably attached to the upper side of the back plate of the case. This is the installed configuration.

[Function] According to the above-mentioned configuration, since the belt holding member is rotatably attached to the upper part of the back of the sliding guide case, the screw holding belt held by the belt holding member can be used to drive screws. Since it can move freely during operation, it is possible to prevent entanglement of the screws in the belt holding member portion-1. 6 [Embodiment] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

The screw driving device according to the present invention is used by being attached to the tip of an electric screwdriver tool 1 via a connecting member 2, as shown in FIG.

First, the general structure of this screw driving device will be explained. As shown in the perspective view of FIG. 2 with the side cover 3 removed and the cross-sectional view of the fir tree in FIG. A sliding member 7 having a rectangular cross section is fitted into the sliding guide case 5, which is attached to the end via a plate 4, with a return spring 6 interposed therebetween. Elongated holes 8 are bored in both side plates of the case 5 in the sliding direction, and bins 9 that fit into the left and right elongated holes 8 are protruded from both sides of the sliding member 7. This allows the sliding member 7 to slide within the case 5 within the elongated hole 8 while being biased by the return spring 6 . The head 9A of the bottle 9 has a diameter larger than that of the elongated hole 8, which allows the sliding member 7 to slide smoothly and prevents the case 5 from being deformed by being pushed laterally. It is prevented. A notch 10 for band relief is formed on the front end side of the case 5.

A belt loading portion within the sliding member 7 is provided with a sprocket 13 that engages with a feed groove 12a of a screw holding belt 12 in which a screw 11 is installed, and a ratchet wheel 14 that engages with this sprocket 13. The screw holding belt 12 is
The empty belt is supplied to the belt loading section from the belt inlet 15 on the back side of the sliding member 7, and the empty belt with the screws 1 is ejected to the outside from the belt outlet 16 on the front side.

The bottle 14A protruding from the ratchet wheel 14 has an arc-shaped long hole 1 bored in the side surface of the sliding member 7.
When the sliding member 7 is pushed into the case 5 and the bottle 14A passes through the inclined part 18A of the slit 18, the bottle 14A is attached to a rotating lever 19 attached to the side plate of the case 5. is pushed down by the lower surface of the ratchet wheel 14, which engages with the sprocket 13.
This sprocket 13 is rotated. This rotating lever 1
9 is spring biased counterclockwise. Due to stiffness,
The screw holding belt 12 is transported by one screw section, and the screw 1
1 is provided below the driver bit 20. Note that this driver bit 20 is attached to the chuck 2 of the electric screwdriver tool 1.
1 is attached in a plug-in manner. At this time, if the sliding member 7 is further pushed into the case 5, the four-pronged tip of the sliding member 7 is pressed against the driven member 22.
The screw 11 under the driver bit 20 can be driven into the hole by the driver tool 1. When the sliding part A7 is pushed back by the return spring 6, the ratchet wheel 14
The only one is idling and returns to the standby state.

The stroke of the driving pin is determined by the distance until the stopper 23 protruding from the sliding member 7 comes into contact with the adjustment ring 24 that fits on the connecting member 7.
By adjusting 4, the driving stroke can be set.

Further, the sliding member 7 is provided with an operating lever 2 that allows the screw holding belt 12 to be pulled back in the opposite direction to the transport direction.
5 is attached.

Next, the belt holding member 26 for holding the screw holding belt 12 supplied to the belt loading section of the sliding member 7 at the upper rear side of the sliding guide case 5 will be explained. It is attached to the upper part of the back plate 5A of the case 5, and has a substantially U-shape as shown in FIG. In this installation, the back plate 27a of the plate 27 is fixed to the upper part of the back plate 5A of the case 5 using, for example, two screws 29 and 29, as shown in FIG.

For attachment, the tip end piece of the upper plate 27b of the plate 27 and the tip end piece of the lower plate 27c, which is shorter than the upper plate 27b, are both bent diagonally downward, and the upper and lower parts of the rotation holding member 28 are attached between these tip pieces. The rotation holding member 28 is rotatably attached to the mounting iJ plate 27 using a support pin 30 with the pieces 28a sandwiched therebetween and the rotation holding member 28 facing slightly diagonally.

The rotation holding member 28 has holding portions 2 on both upper sides of the back plate 28b.
8c and 28c are provided protrudingly, and the belt is inserted through the belt insertion opening 31 shown in Fig. 6! ;The screw holding belt 12 is held by these left and right holding parts 28e and 28c so as to be held from both sides. Flanges 28e, 28e for guiding the belt 12 into the holding parts 28c, 28c are provided at the upper tips of the holding parts 28c, 28c.

Figure 7 shows 1. A state in which the screw holding belt 12 is held at the upper rear side of the case 5 by the belt holding part 326 as shown in the figure is shown.

In the screw driving device configured in this manner, the rotation holding member 28 is attached to the plate 27 so as to be rotatable in the direction of the arrow in FIG. The belt 12 held by the holding parts 28c, 28c freely moves around the axis of the support bin 30 due to vibrations during the driving operation into the driven member 22. Therefore, as the screw retaining belt 12 is transferred from the belt loading section by the sprocket 13, the screws 11 . As the screws enter the holding part 280° 28c while being aligned, the screws 11 may become entangled before the holding parts 28c and 28c, or the belt 12 may not be fed due to the feed groove 12a of the belt 12 getting caught in the holding part 28c. No problems will occur. Thereby, the screw holding belt 12 can be held at the upper rear side of the case 5 and smoothly supplied to the belt loading section.

Next, another embodiment will be described based on FIGS. 8 and 9.

In this embodiment, the holding portions 28c, 28 of the rotary holding member 28 through which the screw 11 implanted in the screw holding belt 12 passes.
The gap 32 between the screws 28c and 28c is widened upward, so that the base of the screw 11 (see FIG. 7) implanted in the screw holding belt 12 (not shown) can pass through the holding parts 28c to 28c more easily. This further reduces the occurrence of entanglements.

Next, still another embodiment will be described based on FIG. 10 and FIG. 11.

In this embodiment, the plate 27 is attached to the back plate 5A of the case 5.
Instead of screwing the plate 27 to the back plate 5A, the support pin 33 is used to attach the plate 27 to the rear plate 5A so as to be rotatable.

In this way, the rotation holding member 28 is not only rotatably attached to the plate 27, but also attached so that the plate 27 is attached to the case back plate 5.
Since it is rotatable with respect to A, the entanglement of the screws 11 is further improved, and the screw holding belt 12 can be supplied more smoothly.

Next, still another embodiment will be described based on FIG. 12.

In this embodiment, the belt holding member 35 is rotatably attached using a universal joint 34 fixed to the case back plate 5A, and since the belt holding member 35 swings three-dimensionally, the belt can be fed even more easily. It can be done smoothly.

〔Effect of the invention〕

As explained above, according to the present invention, the belt holding member for holding the screw holding belt at the upper part of the back of the case is rotatably attached to the upper part of the back plate of the case, thereby preventing belt tangles and screws. Entanglements are now resolved naturally, and unlike conventional methods, the screw holding belt and the screws implanted in this belt become jammed in the belt holding member, making it impossible to feed the belt to the belt loading section. No problems arise.

Conventionally, it took time to remove the screw holding belt entangled with the belt holding member, reducing work efficiency, but with the present invention, all such problems have been resolved and screw driving work has become more efficient. I can do it well.

[Brief explanation of drawings]

Fig. 1 is a left side view showing a state in which a screw driving device according to an embodiment of the present invention is attached to an electric screwdriver tool;
The figure is a perspective view of the screw driving device, FIG. 3 is a vertical sectional view of the screw driving device, FIG. 4 is a left side view of the main part of the screw driving device, and FIG. 5 is a state with the connecting member removed. 6 is a plan view of the screw driving device, FIG. 6 is a rear view of the main parts of the screw driving device, FIG. 7 is a left side view of the screw driving device showing the screw holding belt held by the belt holding member, and FIG. The figure is a plan view of a screw driving device showing another embodiment, FIG. 9 is a rear view of the main part of the screw driving device shown in FIG. 8, and FIG. 10 is a main part of the screw driving device showing still another embodiment. 11 is a plan view of the screw driving device shown in FIG. 10; FIG. 12 is a left side view of the main parts of the screw driving device showing another embodiment; 13th is a left side view;
The figure is a left side view showing a conventional screw driving device. 2... Connecting member 6... Return spring 8... Long hole 11... Screw 1... Electric driver tool 5... Sliding guide case 7... Sliding member 9... Pin ]2...Screw holding belt +2a...Feed groove 13...Subrocket 14A...Pin 18...1 slit...Rotating lever 20...Triba pit 21...Chuck 22... - Part to be driven 26.35... Belt holding member Todo 4... Ratchet wheel 7... Elongated hole 8A... Inclined part 7... Installation is on plate 8c... Holding part 0... Support Pin 2... Gap 4... Universal joint 28... Rotation holding member 29... Screw 31... Insertion port 33... Support pin Ishiki Kimiko

Claims (1)

[Claims] A sliding guide case is attached to the tip of the driver tool on which the driver bit is attached via a connecting member, and a sliding member is slidably inserted into this sliding guide case via a return spring. A belt holding member for holding the screw holding belt supplied to the belt loading section in the sliding guide case is attached to the outer surface of the case, and when the sliding member is pushed into the sliding guide case. In a screw driving device configured such that the screw holding belt is transferred by one screw section and the transferred screw is driven by the driver bit, the belt holding member is rotatable relative to the outer surface of the sliding guide case. A screw driving device characterized by being attached.