JP2816191B2 - Fixture fastening device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fastener fastening device.

[Prior art] Various fasteners such as wood screw type and bolt nut type are known according to the purpose of use. Power tools are used to attach and tighten these fasteners from the viewpoint of labor saving and efficiency improvement. Widely used.

For example, in an assembly line of various devices, a processing line factory, or the like, a power tool is incorporated into a robot, and fasteners are sequentially supplied to the robot to automate fastening of the fasteners.

On the other hand, in civil engineering construction, etc., the efficiency and efficiency of work have been advanced by attaching and tightening fasteners using power tools,
A holder equipped with a power tool and a plurality of fasteners adapted to the power tool has been proposed.

[Problems to be Solved by the Invention] As described above, by mounting and tightening various fasteners using a power tool, it is expected that the burden on the operator is reduced and the construction period and assembly time are significantly reduced. But
In the conventional combination of the power tool and the holder, the mounting of the holder to the power tool requires a considerable amount of time, and as a result, a considerable amount of time is required for preparing for the tightening operation.

Further, the fastener attached to the power tool must be maintained in a predetermined posture, for example, a state perpendicular to the surface of the base material during the tightening operation, but it is difficult to maintain the predetermined posture depending on the shape of the fastener. Others can result in frequent installation errors.

From this point of view, the applicant of the present application has previously filed Japanese Patent Application No. 1-23998.
Japanese Patent Application Laid-Open No. Hei 2-205483 proposes a fastener tightening device capable of automatically setting a plurality of fasteners in a state in which the fasteners can be sequentially tightened together with the fastening operation of the fasteners.
As a result, the above-mentioned problem could be solved temporarily.

However, the fastener holder with a plurality of fasteners has a certain length, and furthermore, moves sequentially in a predetermined direction across the tightening drive shaft of the apparatus main body, so that it can be moved around a portion of the base material where the fasteners are to be tightened. If there are no obstacles such as projections, it is okay, but if it is necessary to tighten the fastener near the corner or near the projection (such cases are often present in practice) It may happen that the holding and guiding mechanism of the tool holder interferes with the work.

In addition, the holding guide mechanism of the fixture holder that has been conventionally proposed requires the feed amount to be set in conjunction with the fixture holder, so the structure is complicated, and the flexibility and the type and size of the fixture are almost inflexible. Therefore, each time the type or size of the fastener changes, a separate holding and guiding mechanism for the fastener holder must be prepared, which is costly. Also, since the feed amount of the fastener holder itself for mounting a plurality of fasteners is inevitably determined by the feed mechanism on the holding guide mechanism side, each fastener must be mounted on the fastener holder at a predetermined interval, It has a relatively complicated configuration and is expensive.

As described above, in the fastener fastening device that has been conventionally proposed, the cost of the fastener holder itself for mounting a plurality of fasteners, the structure of the holding guide mechanism of the fastener holder is complicated, There are technical problems to be solved, such as obstacles to the fastening operation by the holding and guiding mechanism of the fixing tool holder and the fixing tool holder to be attached to the fixing tool, and flexibility to the size and type of the fixing tool.

Therefore, the present invention solves the above technical problem and can be used with substantially no relation to the fastening environment of the fastener and with flexibility in the size and type of the fastener, with a simple structure and low cost. An object of the present invention is to provide a fastener fastening device.

Means for Solving the Problems In order to achieve the above object, a fastener fastening device according to the present invention includes a fastening drive shaft attached to a main body including a drive source and a fastening drive shaft driven by the drive source. A mounting member is provided which can be displaced rearwardly against the distal end portion against the spring force in the axial direction thereof. The mounting member is passed through a tightening drive shaft and the fixture holder guide holding mechanism is rotated at one end thereof. A mounting hole which can be detachably received is provided concentrically with respect to the tightening drive shaft, and the fixture holder guide and holding mechanism has an axial passage passing through the distal end portion of the tightening drive shaft and a large number of fixings across the axial passage. A fixture holder guide passage through which a fixture holder with a fixture is passed, and a spring forcibly extending from the end opposite to the axial passage along the fixture holder guide passage toward the axial passage, thereby securing the fixture. A feed sliding member that feeds the clothing holder in the forward direction, and is elastically exposed to the axial passage, and abuts on the foremost fastener among the fasteners mounted on the fastener holder to be fixed. It is characterized in that it comprises a tightening drive shaft and a latch member for positioning the fasteners of the tool holder sequentially on a coaxial line.

In the fastener fastening device according to the present invention, an adjustable stopper member for setting a relative displacement amount between the main body and the mounting member to which the fastener holder guide / holding mechanism is attached may be provided.

[Operation] In the fastener fastening device of the present invention configured as described above, the fastener holder guide and holding mechanism is rotatably mounted on the mounting member, so that the fastener holder guide and holding mechanism does not hinder the fastening operation. The tightening operation can be performed by rotating to the position (direction).

The feed sliding member, which moves along the fixture holder guide passage by the force of the spring, presses the rear end of the fixture holder inserted into the fixture holder guide passage of the fixture holder guide holding mechanism toward the axial passage. The positioning of each fastener in the fastener holder with respect to the tightening drive shaft is effected by the abutment of the fastener against a latch member which resiliently protrudes into the axial passage, so that each fastener is secured to the fastener holder. Fixtures can be reliably positioned even if the fixtures are not installed at equal intervals, the spacing between the fixtures mounted on the fixture holder can be set arbitrarily, and fixtures with different shapes Can be attached to the same fixture holder at random.

Further, in the fastener fastening device of the present invention, when an adjustable stopper member for setting a relative displacement amount between the main body and the mounting member to which the fastener holder guide / holding mechanism is attached is provided, a fastening process of the fastener is provided. (Stroke) can be set, whereby even fasteners having the same or different lengths can be uniformly tightened with a predetermined torque.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 and 2 show the overall structure of an embodiment of a fastener fastening device according to the present invention, wherein 1 is a portable power tool main body, 2 is a rotary drive shaft thereof, and 3 is a mounting member, which is extendable and contractible. The power tool main body 1 is attached to the power tool main body 1 via a simple support mechanism 4. As shown in FIG. 3, the extendable support mechanism 4 is of a telescopic type extending in parallel with the rotary drive shaft 2, and fixes one end of a tubular support 5 to the power tool main body 1 via a mounting member 6. The other end is fixed to the mounting member 3, a spring 7 is inserted into the telescopic tubular support 5, and the mounting member 3 is always forced to move away from the power tool body 1. The power tool body 1 and the mounting member 3 are attached to the mounting member 6 to which the telescopic tubular support 5 is mounted.
An adjusting screw 8 is provided as an adjustable stopper member for setting a relative displacement (stroke) with respect to the nested tubular support 5. The adjusting screw 8 functions to regulate the contracted position of the nested tubular support 5. .

The mounting member 3 is formed of a plate-like member as shown in FIG. 3, and a mounting hole 9 for passing the rotary drive shaft 2 extending from the power tool main body 1 is provided concentrically with the rotary drive shaft 2 near one end thereof. As shown in FIG. 4, a fixture holder guide / holding mechanism 10 is rotatably and detachably attached to the mounting hole 9 via a joint 11 at one end thereof. That is, as shown in FIG. 5, the joint 11 at one end of the fixture holder guide / holding mechanism 10 is disengaged while the latch 9a is pushed in against the spring 9b adjacent to the inner periphery of the mounting hole 9 in the mounting member 3. By fitting and releasing the latch 9a, the latch 9a engages with the groove 11a of the joint 11, and a locking ball 9c protrudes from the inner periphery of the mounting hole 9 at a position facing the latch 9a. When the locking ball 9c is fitted into a hole 11b provided at an appropriate interval around the joint 11 as shown in FIG. It is constituted so that it may be held.

The fastener holder guiding and retaining mechanism 10 includes an axial passage 12 formed concentrically therewith through a joint 11 and an axial passage 12
A fastener holder guide passage 14 for passing a fastener holder 13 to be described later is formed across the fastener holder 13 and both ends of the fastener holder guide passage 14 are open.
As shown in FIG. 13, a groove 15 extending along the fixture holder guide passage 14 and communicating with the fixture holder guide passage 14 is formed on the side of the fixture holder guide and holding mechanism 10. A feed sliding member 16 for feeding the fixture holder 13 in the forward direction along the fixture holder guide passage 14 is provided therein. The feed slide member 16 has an inner end 16a protruding into the fixture holder guide passage 14, and an outer end protruding outside the fixture holder guide and holding mechanism 10 and sliding on the surface thereof. 16b is installed. The feed sliding member 16 has one end fixed to the fixture holder guide and holding mechanism 10.
The spring 17 is fixed to the other end of a spring 17 fixed to the rear part of the groove 15, and the spring 17 is adapted to swing and extend a swivel wheel 18 provided in the front part of the groove 15. Here, the rear end 10a of the fastener holder guiding and holding mechanism 10 is tapered as shown in FIG. 2, and the rear end 15a (FIG. 1 or 4) of the groove 15 is this tapered rear end 10a. And communicates with the recess 15c (FIG. 12) formed therein. As a result, when the fixture holder 13 is mounted on the fixture holder guide and holding mechanism 10 as described later in the operation of the apparatus, the inner end 16a of the feed sliding member 16 is disengaged from the fixture holder guide passage 14. Being able to pause.

Further, on the lower inner peripheral surface of the axial passage 12 formed near one end of the fixture holder guide and holding mechanism 10, toward the other end of the fixture holder guide and holding mechanism 10 parallel to the axis of the fixture holder guide passage 14. The latch member 19 is elastically supported by a spring 20, and comes into contact with the foremost fastener among the fasteners 21 mounted on the fastener holder 13 to fix the latch member 19. Rotating tool 2
It is configured to be positioned on the axis of. In this case, in the illustrated embodiment, the head of the fixing tool 21 mounted on the fixing tool holder 13 also corresponds to the extension 11c of the joint 11 defining a part of the axial passage 12, as clearly shown in FIG. It is in contact with and functions for positioning the fixing tool 21. The upper end of the latch member 19 is formed in a tapered shape so that when the rotary drive shaft 2 is driven, the fastener positioned on the axis thereof can be easily detached from the fastener.

In the illustrated embodiment, the fastener holder 13 is formed of a plate-shaped styrofoam having a rectangular cross-section having a size capable of being inserted into the fastener holder guide passage 14 of the fastener holder guide and holding mechanism 10, and a plurality of the fasteners are provided along the longitudinal center axis thereof. Fastener 21
In this case, the insertion position of each fastener 21 may be along the central axis in the longitudinal direction.
Are not necessarily required to be at equal intervals as long as they do not interfere with each other. As shown in FIG. 4, the length of the fastener holder 13 is such that the distance from the rear end 13a to the fastener located at the forefront is the axial direction in which the rotary drive shaft 2 passes from the rear end of the fastener holder guide passage 14. It can be determined to be shorter than the distance to the passage 12.

The operation of the thus configured device of the present invention will be described.

In using the apparatus, first, the feed sliding member 16 is pulled to the inclined rear end 15a of the groove 15 against the spring 17, and the feed sliding member 1 is pulled.
6 Remove the inner end 16a from the fixture holder guide passage 14 and
In this state, the fixture holder 13 is inserted from the rear end of the fixture holder guide passage 14 in the fixture holder guide and holding mechanism 10, and the feed slide member 16 is inserted. It is detached from the drop groove 16 and its inner end 16a is engaged with the rear end 13a of the fixture holder 13. Accordingly, the fastener holder 13 is forcibly moved forward by the force of the spring 17 until the fastener 21 located at the forefront thereof comes into contact with the latch member 19 protruding into the lower inner peripheral surface of the axial passage 12. As shown in FIG. 4, the fixture holder 13 is mounted in the fixture holder guide and holding mechanism 10.
The fixture holder guide and holding mechanism 10 of the fixture holder 13
The mounting operation on the mounting member 3 can be performed while the fixing tool holder guide and holding mechanism 10 is mounted on the mounting member 3.

Then, the adjusting screw 8 attached to the tool body 1 is adjusted according to factors such as the size of the fastener 21 to be fastened and the fastening depth, and if necessary, the orientation of the fastener holder guide holding mechanism 10 is obstructed. The operation preparation is completed by setting the rotation position to a certain value.

In this state, the tool body 1 is positioned with respect to a base material (not shown) to be tightened, and the bottom surface of the fixture holder guide / holding mechanism 10 is brought into contact with the base material. By pressing the tool body 1 against the force of the spring 7 in the tubular support 5 of the above, the fixture holder guide and holding mechanism 10 and the rotary drive shaft 2 are relatively displaced, and the rotary drive shaft 2
Is fitted into the head of the fixing tool 21 positioned in the axial passage 12, and the fixing tool 21 is gradually tightened into the base material while rotating. In this tightening step, the fixing tool holder 13 is made of a relatively soft and highly elastic material, so that the fixing tool 21 is easily pulled out of the fixing tool holder 13 by being driven by the rotary drive shaft 2, and the tightening operation is performed. Can be performed without any hindrance despite the presence of

After the first fixing tool 21 has been fastened to the base material, the tool body 1 is separated from the base material, and the fixing tool holder guide / holding mechanism 10 is moved relative to the rotary drive shaft 2 by the action of the spring 7 of the support mechanism 4. It returns to the original starting position by relative displacement. At the same time, the fastener holder 13 moves the feed sliding member 16 by the action of the spring 17 until the next fastener 21 contacts the latch member 19.
Is pushed forward by this, and thus the second fastener 21
Is automatically positioned at the driving position. By repeating the operation in this manner, all the fasteners 21 mounted on the fastener holder 13 can be sequentially and continuously tightened to the base material.

By the way, in the illustrated embodiment, the shape of each part is merely for illustration, and can be arbitrarily changed according to the type and shape of the fastener used.

In the illustrated embodiment, the adjusting screw for setting the stroke of the rotary drive shaft is provided on the tool main body side. However, the adjusting screw can be provided on the mounting member side on which the fixture holder guide and holding mechanism is mounted.

Further, in the illustrated embodiment, the case where the same fixing tool is mounted on the fixing tool holder has been described. However, even if different types of fixing tools are mounted on the same holder, the present apparatus can be used similarly.

Further, the position (for example, the lateral position) and the structure of the latch member may be changed in design and the fastener holder may be mounted on the fastener holder guide holding mechanism from the front.

[Effect of the Invention] As described above, in the fastener fastening device according to the present invention, since the fastener holder guide holding mechanism is rotatably supported by the member for mounting the fastener holder guide mechanism, the fastener holder guide holding mechanism is tightened. The tightening operation can be performed by rotating to a position (orientation) that does not hinder the operation, and as a result, the work can be performed at a corner or at a base material portion having a projection at the periphery.

In addition, since the positioning of each fixture mounted on the fixture holder is such that each fixture is directly stopped by the latter member, a complicated feed mechanism as in the related art is not required, and each fixture is fixed to the fixture holder. It is not necessary to mount the fasteners at equal intervals, so that the fasteners can be randomly mounted on the fastener holder and used at the site, and workability and flexibility for various fasteners can be dramatically improved. .

Also, the fixture holder itself may be of any shape as long as it can be mounted on the apparatus, and it does not require a special structure, so that it can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a front view showing the overall structure of an embodiment of the present invention, FIG. 2 is a partial bottom view of the apparatus of FIG. 1, FIG. 3 is an enlarged partial sectional view showing the structure of a part of the apparatus, FIG. FIG. 5 is an enlarged partial cross-sectional view showing a related structure between the fixture holder guide / holding mechanism and the mounting member. FIG. 5 is an enlarged partial cross-sectional view showing the structure of an attachment portion of the fixture holder guide / holding mechanism. 7 and 8 are plan and side views, respectively, of the fixture holder guide and holding mechanism, and FIGS. 9 and 10 are arrows in FIG. 7, respectively. FIG. 11 is an end view seen from the directions of A and B, FIG. 11 is a cross-sectional view of the fixture holder guide and holding mechanism of FIG.
FIG. 12 is a schematic sectional view showing the internal structure of the rear end portion of the fixture holder guide / holding mechanism, and FIG. 13 is a schematic view showing the internal structure of the fixture holder guide / holding mechanism. In the drawing, 1... The tightening tool body, 2... The tightening drive shaft, 3... The fixing member holder guide and holding mechanism mounting member 10... The fastener holder guide and holding mechanism 12. ...... Fixer holder guide passage 15 ... Groove 16 ... Sliding member 17 ... Spring 19 ... Latch member 20 ... Spring 21 ... Fixer

Claims (1)

(57) [Claims] 1. A body having a drive source and a tightening drive shaft driven by the drive source, which can be relatively displaced rearward against a distal end portion of the tightening drive shaft against a spring force in the axial direction thereof. A mounting hole passing through the fastening drive shaft and receiving a fastener holder guide and holding mechanism rotatably and detachably at one end thereof, concentrically with the fastening drive shaft; An axial passage for passing a tip end portion of a tightening drive shaft, a fastener holder guide passage for passing a fastener holder having a plurality of fasteners across the axial passage, and a fastener holder guide passage for passing the fastener; A feed sliding member forcibly moving the fastener holder in the forward direction by a spring toward the axial passage from an end opposite to the axial passage along the axial passage, and a resiliently exposed exposure member provided in the axial passage. And a latch member that abuts on the foremost fastener among the fasteners mounted on the fastener holder and sequentially positions the respective fasteners of the fastener holder on the driving shaft and the coaxial line. Characteristic fastener fastening device.