JPH06182709A - Machine screw driving machine for fixing floor material - Google Patents

Abstract

PURPOSE:To provide a machine screws driving machine for fixing a floor material capable of automatically driving many machine screws fixing the floor material to the common joist up to predetermined depth at predetermined positions. CONSTITUTION:The frame 2 guided by the guide rail 1 arranged on the upper surface of the floor is intermittently moved by a predetermined distance in a before-and-behind direction by a before-and-behind moving device 16. The moving stand 3 moving in the before-and-behind direction so as to follow the frame 2 and guided in a left-and-right direction while guided by the frame 2 is moved by a predetermined distance in the left-and-right direction by a lateral drive device 37. The drill 55 for machine screw supported on the moving stand 3 in a liftable manner and receiving the automatic supply of machine screws is driven by a lifting device 58 so as to be raised and lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw stand for fixing floor materials.

[0002]

2. Description of the Related Art Generally, in a floor structure such as a gymnasium, a judo or a prefectural dojo, a joist 101 is erected on a large draw 107 via a cushioning material 108 such as rubber packing as shown in the block diagram of FIG. And, the waste board and the flooring are put on it, and the waste board 101 and the flooring 102 are
It is fixed to the joist 103 by making a hole 104 from the upper surface of the floor at the position of the joist 103 and screwing a screw 105, which is a so-called brain screw, to the joist 103. Hole 1
In 04, a buried tree (dough) 106 is embedded after a screw is set up.

[0003]

This screw stand and the drilling work for the screw stand all rely on human labor, which requires a great deal of time and labor. Also, since it relies on human labor, the positional accuracy of driving the screw 105 is low,
There is a possibility that the screw 105 may come off the joist and be screwed only into the wasteboard 101 and the flooring 102.

The present invention has been made in view of the above circumstances, and provides a floor material fixing screw stand for automatically driving a large amount of screws for fixing a floor material to a joist at a predetermined position to a predetermined depth. It is intended to be provided.

[0005]

In order to achieve the above-mentioned object, a floor material fixing screw stand according to the present invention has a guide rail arranged on the floor upper surface and a frame which is guided by the guide rail to move back and forth. And a front-rear drive device that moves the frame in the front-rear direction by a predetermined distance in a certain cycle, a movable base that follows the frame and moves in the front-rear direction, and is guided by the frame to move in the left-right direction. A horizontal driving device that moves the same in the left-right direction by a predetermined distance at other fixed cycles, a screw stand drill supported to be movable up and down on a moving base, and a lifting drive device that drives the drill up and down. Characterize.

[0006]

[Operation] A guide rail is laid on the floor, the frame is placed on the guide rail, and the drill for drilling and the screw drill are positioned above the joists. Position the movable table so that the drill for drilling is located above the position where the screw is first driven.

Thereafter, the hole drill is operated to lower it from a predetermined standby position to a predetermined lower limit position, and subsequently to return to the standby position, a hole having a predetermined depth is drilled in the floor.

When the first drilling is completed in this way,
The horizontal drive is operated to move the moving table to a position where the screw stand drill is located above the hole, and the screw is supplied from the feeder to the screw stand drill. After that, the screw is moved into the first hole by lowering from a predetermined standby position to a predetermined lower limit position while operating the screw stand drill and then returning to the standby position. By properly setting the lower limit position of the screw stand drill, the screw is screwed through the floor material to the joist.

In this way, when the screws in the predetermined range are finished at proper intervals in the left-right direction, the front-rear drive unit is operated to move the frame and the movable table in the front-rear direction, and the next joist A drill for drilling and a screw for drilling are positioned above, and drilling of a screw up hole for the next joist and screw up are performed in the same manner as above.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A floor material fixing screw stand according to an embodiment of the present invention will be described in detail with reference to the drawings.

As shown in the plan view of FIG. 1, the rear view of FIG. 2 and the side view of FIG. 3, this screw raising machine is provided with a guide rail 1 which is placed on the floor upper surface so as to extend in the front-rear direction, and this guide. A frame 2 that is guided by the rail 1 and moves in the front-rear direction, and a moving table 3 that moves in the front-rear direction following the frame 2 and that is guided by the frame 2 and moves in the left-right direction are provided.

As shown in the perspective view of FIG. 4, the front view of FIG. 5 and the side view of FIG. 6, the guide rail 1 has a chevron-shaped rail body 4 made of an L-shaped steel material (angle material) and a front and rear direction on the lower surface thereof. The pillow 5 is welded at an appropriate interval to
Mark holes 6 are formed on one side of the rail body 4 at regular intervals.
Are formed. The distance between the mark holes 6 is the minimum common distance (for example, 100 mm) of the pitches of several kinds of joists, and the guide rail 1 is laid so that several mark holes 6 correspond to the positions of the joists. .

As shown in FIGS. 1 to 3, the frame 2 is supported by a rectangular frame 7 which is long in the left and right in a plan view and left and right ends of a left frame 8 of the rectangular frame 7 so as to be rotatable about the left and right axial centers. A pair of drive wheels 9 rolling on the upper surface of the
Another pair of drive wheels 1 which are rotatably supported around the left and right axial centers at the front and rear end portions of the right frame 10 of and are rollingly contacted with the rail body 4.
1 and these drive wheels 9 and 11 are rotatably supported on the lower surfaces of the front and rear frames 12 and 13 of the rectangular frame 4 at appropriate intervals in the left-right direction, and are rotatably supported around the left and right axes, and the upper surface of the floor. Two pairs of free wheels 14 before and after rolling on the right and left side of the right frame 10 ± 45
A front and rear pair of free wheels 15 rollingly supported on both sides of the guide rail 1 are rotatably supported around the tilt axis.

The frame 2 is driven by a front-rear driving device 16, which drives the driving wheels 9, 1 described above.
1 and a motor 17 supported on the front side of the left end portion of the front frame 12.
A transmission device 18 for transmitting the rotation of the motor 17 to the drive wheels 9, a motor 19 supported on the front portion of the right frame 10,
The motor 17, including a transmission device 20 for transmitting the rotation of the motor 19 to the drive wheels 11, is intermittently operated synchronously by a control panel 21 mounted on the moving table 3.

The position of the frame 2 is as shown in FIG.
The sensor 23 supported on the right side of the center of the right frame 10 of the frame 2 through the bracket 22 recognizes the mark hole 6 of the rail body 4, and the speed of the frame 2 is controlled based on this recognition.

The frame 2 has a mark hole 6 corresponding to a joist.
The front-rear driving device 16 is stopped each time the position is detected, and the frame 2 that is going to move in the front-rear direction by inertia is positioned by the positioning device 24 at the position corresponding to each joist and stopped. .

As shown in the side view of FIG. 7, the positioning device 24 includes a stopper 25 supported by the frame 2 via the bracket 22 so as to be able to move forward and backward toward the mark hole 6 of the rail body 4, and this stopper. 25 is provided with a positioning motor 28 interlockingly connected via a seesaw lever 26 and an eccentric rotary plate 27, and as described below, the stopper 25 is activated each time the sensor 23 detects the mark hole 6 corresponding to a joist. Is inserted into the mark hole 6 corresponding to the joist, so that the position of the frame 2 is positioned at a position corresponding to an arbitrary joist.

That is, after the stopper 25 that has been inserted into the mark hole 6 corresponding to an arbitrary joist is retracted and released from the mark hole 6, the positioning action is released, and then the motors 17 and 19 of the front-rear drive device 16 are turned on. When the frame 2 is started and moved in the front-rear direction, the sensor 28 sequentially detects the mark holes 6.

For example, when some mark holes 6 (for example, two mark holes 6 after starting) are detected, it is considered that the mark hole 6 corresponding to the next joist is approached, and at an appropriate timing after the detection. Motor 1 of front-rear drive device 16
By starting deceleration of 7 and 19, and stopping both motors 17 and 19 at or near the position where the next mark hole (third mark hole after starting) 6 is detected, the frame 2 is moved to the next position. Stop at the position corresponding to the joist.

When the frame 2 is stopped, the sensor 2
It is assumed that the mark hole 6 corresponding to the joist is detected by detecting the mark hole 6 (the third mark hole in this example) for stopping the frame 2 at 3, and the positioning motor 28
Moves the stopper 25 forward and causes the stopper 25 to protrude into the several (third in this example) mark hole 6 from the previously ejected mark hole 6 to position the front and rear positions of the frame 2. As a result, the frame 2 is positioned at the front-back position corresponding to the next joist.

As shown in FIG. 1, the moving base 3 is supported by rectangular underframes 29 that are long in the front and rear direction in plan view, and under the four corners of the underframe 29 as shown in FIG. And a free wheel 64 rolling on the upper surface of the floor.

As shown in the plan view of FIG. 8 and the side view of FIG. 9, a guide plate 30 is fixed on the upper surface of the front frame 12 of the frame 2 over its entire length, and the left and right corners on the front side of the moving table 3 are fixed. A roller 32 rollingly contacting the rear side surface of the guide plate 30 through a bracket 31 is rotatable about the vertical axis, and a roller 33 rollingly contacting the lower surface of the guide plate 30 is rotatable about the front-rear axis. Supported.

Further, another bracket 3 is provided at the center of the front side of the moving table 3 so as to extend forward by straddling the guide plate 30.
4 is fixed, and a roller 35 rolling on the front side surface of the guide plate 30 is attached to the bracket 34 about the vertical axis.
Rollers 36 rolling on the lower surface of the guide plate 30 are rotatably supported around the front and rear axes.

As described above, the underframe 29 of the movable table 3 is supported on the floor surface by the free wheels, while the rollers 32 supported by the movable table 3 before and after the guide plate 30 fixed to the front frame 12 of the frame 2. , 35 by rolling, the moving table 3
Can be moved in the front-rear direction following the frame 2, and can be moved in the left-right direction using the frame 2 as a guide.

The movable table 3 is intermittently driven in the left-right direction by a lateral driving device 37, and the lateral driving device 37 is fixed on the right front part of the underframe 29 as shown in FIGS. Is fixed to a drum 39 rotatably supported around a left-right axis around a bracket 38 formed in a U-shape whose front is open, and an L-shape in a plan view. Supported by bracket 40
A lateral movement motor 44 for driving the drum 39 in both forward and backward directions via the gears 41, 42, 43, and a vertical rotary encoder 45 for detecting the lateral position of the moving table 3 are provided. ing.

As shown in FIGS. 1, 2, 8 and 9.
A large number of positioning pins 46 are raised on the upper surface of the guide plate 30 at predetermined intervals in the left-right direction, and the axial length of the drum 39 is the same as the gap between the pins 46. It is formed. Further, a cam groove 47 formed of, for example, a spiral groove in the right-hand screw direction is formed on the peripheral surface of the drum 39, and both end surfaces 51 of the cam groove 47 receive the pin 46 in the screwing direction when the drum 39 is rotated. A guide claw 52 that guides to the.

The above-mentioned cam groove 47 is approximately 1/2 of the drum 39.
Since the drum 39 is formed so as to reach from the one end to the other end of the drum 39 when it is rotated, the pin 46 contacting the end surface 51 on one side of the drum 39 while the drum 39 is rotated once is located on the other side of the drum 39. The drum 39 advances to a position in contact with the end surface 51, the next pin 46 contacts the end surface 51 on one side of the drum 39, and the pair of pins 4 in which the drum 39 contacts both end surfaces 51.
6, the position of the pin 46 is set as one unit distance, and the pin 46 is positioned each time the unit distance advances (for example, 150 mm).
As a result, the movable table 3 supporting the drum 39 is positioned every time the unit moves a unit distance.

As shown in FIGS. 1 to 3, a plate-shaped stand 53 is erected on the center of the movable table 3 in the front-rear direction, and two holes are formed on the rear side of the stand 53 so as to be arranged side by side. Drills 54 and 55, and 1 arranged between them
Two screw stand drills 56 are respectively supported so as to be able to move up and down. The positions of these drills 54, 55, 56 in the front-rear direction are determined by the stopper 25 for positioning the front-rear position of the frame 2.
It corresponds to the front and back positions of.

The distance between the drill axes of the drills 54, 55 and 56 is set in units of one unit distance. For example, in this embodiment, the left drill 54 and the screw stand drill 5 are used.
The distance between 6 and 6 is 1 unit distance, and the distance between the screw shaft 56 and the right drill 55 is 2 unit distances.

The respective drills 54, 55, 56 are driven up and down by a lifting drive device 57, 58, 59 over a predetermined standby position and a predetermined lower limit position. Each lifting drive 5
For example, when the lifting drive device 57 is used as an example, the reference numerals 7, 58 and 59 are supported by a stand 53 above each drill 54 so as to be rotatable about the longitudinal axis, as shown in FIGS. 1, 2 and 3. The eccentric rotary plate 60, the connecting rod 61 that interlocks the eccentric position of each eccentric rotary plate 60 with the corresponding drill 54, and is supported on the front side of the stand 53,
A motor 6 for intermittently driving the eccentric rotary plate 60 by one rotation.
2 and. The lifting drive device 58 for the drill 55 on the right side has the same structure as the lifting drive device 57 for the left side. Also, a lifting drive device 59 for the screw stand drill 56.
Are both holes except that they are connected between the connecting rod 60 and the drill 56 by a spring 62 for absorbing an overload, or an expansion / contraction shaft 63 with an absorbing material such as rubber or air interposed. It is constructed in the same manner as the lifting drive devices 57, 58 of the drills 54, 55.

Further, although not shown, a feeder for automatically supplying screws to a screw stand drill 56 is provided on the front side of the stand 53. Next, a floor fixing construction method using this screw stand will be described.

After laying a siding board and a flooring on the floor, the guide rail 1 is placed on the floor so that the guide holes 1 are parallel to each other and some mark holes 6 correspond to the positions of the joists. When the driving wheel 11 of the right frame 10 of the frame 2 which is laid on the surface and preliminarily assembled with the movable table 3 is placed on the upper side of the guide rail 1, the frame 2 is guided by the guide rail 1 so that the frame 2 can move in the front-rear direction. In addition, the movable table 3 can move back and forth following the frame 2, and the movable table 3 can be guided by the frame 2 to move in the left-right direction.

After this, the stopper 25 of the positioning device 24
When the front and rear positions of the frame 2 and the movable base 3 are positioned by inserting the holes into the mark holes 6 corresponding to the positions of the joists, the front and rear positions of the drills 54, 55, 56 are positioned by the positioning device 24.
Since each of the drills 54, 55, and 56 is accurately positioned above the joists, the drills 54, 55, and 56 are accurately positioned above and below the stopper 25.

After that, the movable table 3 is moved to, for example, the right end (or left end) position in the frame 2, so that the left hole drill 54 is positioned above the position where the screw is first driven.

After the left-hand drill 54 is positioned above the initial screw stand position, the elevator drive device 57 is operated while the drill 54 is operating to move the drill 54 from the standby position (top dead center). Lower to the lower limit position (bottom dead center),
By returning to the standby position, a hole with a predetermined depth is made in the floor. The depth of this hole is set so that the remaining thickness of the scrapboard and the flooring is equal to or higher than the screw drawing strength.

When this drilling is completed, the lateral drive device 37
Is operated to move the movable table 2 leftward by one unit distance and then stopped, the screw stand drill 56 is positioned above the hole. After the screw 56 for drilling screws is positioned above the hole in this way, a screw having a tapping function is supplied to the drill 56 by the feeder, and the drill 56 is continuously operated while the drill 56 is being operated. When the screw is lowered from (top dead center) to the lower limit position (bottom dead center), the screw is pushed to the bottom of the hole, penetrates the throwing plate (or flooring together with it) and is set in the joist. When the screw is set up to a predetermined depth, the lifting drive device 59 returns the drill 56 from the lower limit position to the standby position.

After the screw is set up in the initial screw standing position in this way, the lateral drive device 37 is operated to move the movable table 2 leftward by the required unit distance (for example, 3 unit distance). , Do the next hole and set up the screw in the same way.

Here, since the front frame 12 of the frame 2 and the guide plate 30 extend in the direction perpendicular to the guide rail 1, that is, in the direction parallel to the joists, the next holes to be drilled next are exactly above the joists. The screw that is opened and set in the hole will be screwed into the joist accurately.

Further, since the lateral distance between the holes and the screws is controlled to be constant by the lateral driving device 37, the holes and the screws can be uniformly distributed in the lateral direction. In this way, while the movable table 3 is intermittently moved leftward, the boring and the screw setting are repeated, and when the moving table 3 finishes the screw setting at the left end in the frame 2, the positioning device 24 The positioning action is released, and the front-rear driving device 16 is operated to move the frame 2 and the moving base 3 forward (or rearward) to position and stop the frame 2 at a position corresponding to the next joist.

At the position corresponding to the next joist, the right side drill 55 and the screw stand drill 56 are used to intermittently move the moving base 3 to the right while making holes and screw stands. And repeat.

When all the screws have been set up at the position corresponding to the next joist, the positioning operation of the positioning device 24 is released, and the front-rear driving device 16 is operated to move the frame 2 and the movable table 3 forward (or And move the frame 2 to a position corresponding to the next joist and stop it.

In this way, the positioning of the frame 2
It is possible to automatically set a large number of screws over the entire floor surface by sequentially repeating the movement of the frame 2 while raising the screws while moving the movable table 3.

In this embodiment, the distance between the left hole drill 54 and the screw stand drill 56 is one unit, and the right hole drill 55 and the screw stand drill 5 are one unit.
The distance from 6 is 2 units, and the pitch of the holes is set to 4 units, so the screw stand position when moving to the right and the screw stand position when moving to the left This means that they are displaced from each other by two units, and the intersections of the rhombic lattices become screw standing positions as a whole.

Further, in the above embodiment, the distance between the screw stand drill 55 and the drills 53, 54 for drilling is set to be equal to the horizontal pitch of the screw stand positions, and the screw stand drill 55 and its lateral movement direction are set. It is possible to raise and lower the drills 53 and 54 for drilling at the same time so that the screw stand and the hole next to the screw stand can be drilled at the same time. In this case, most of the drilling and the screw stand can be processed in parallel, so the construction period can be shortened to about half.

Further, in the above embodiment, the movable table 3 is moved while the frame 2 is positioned at a predetermined position. However, the drills 54, 55 and 56 are arranged in the front-rear direction to move the movable table. The frame 3 may be moved while holding it at a predetermined position with respect to the frame 2.

In addition, in the above-described embodiment, for example, dowel driving devices are arranged at positions left by one unit on the left side of the drills 54 and 55, and the dowels are automatically inserted into the holes after the screws are set up. It is possible to configure so as to be stuffed in a desired manner. In this case, the work from drilling to dowel insertion can be consistently automated.

[0047]

As described above, according to the present invention, the frame is moved by intermittently moving the frame at regular intervals in the front-back direction and by intermittently moving the movable table at other regular intervals in the left-right direction. The screw stand drill supported on the table can be sequentially moved to a large number of screw stand positions distributed in a grid. Therefore, after stopping the moving table on each screw stand position, supplying the screws to the screw stand drill by the feeder, and lowering them to the predetermined lower limit position while operating the screw stand drill, In addition, it is possible to automatically and efficiently set a large amount of screws up to a predetermined depth in a short time and prevent the screws from being set off from the joists.

In the present invention, the front-rear drive device for driving the frame in the front-rear direction drives the drive wheel, which is rotatably supported by the frame about the left-right axis and is in rolling contact with the floor upper surface or the guide frame. A front-rear drive motor, a number of marks provided on the guide rail at predetermined intervals, a detector supported by the frame for detecting the mark, and a frame when the detector detects the predetermined mark. When the positioning device for determining the front-back position is provided, the positioning device can stop the frame at the correct front-back position to improve the construction accuracy.

Further, in the present invention, in particular, the lateral drive device is supported by a pin provided on the frame at a predetermined interval in the left-right direction and a movable base rotatably about the left-right axis, and has a length in the axis direction. A drum having substantially the same gap as the adjacent pin, a left and right drive motor that drives the drum in both forward and reverse directions, and a cam that is formed on the peripheral surface of the drum and into which the pin slidably projects. When the groove and the guide portion provided on both end surfaces of the drum are provided so as to receive the pin and guide it to the cam groove when the drum rotates, the drum and the movable table are arranged with the pin pitch corresponding to the rotation speed of the drum. It can be moved accurately by an integer multiple of the same unit distance, and the pins in contact with both sides of the drum can position the drum and the moving table in the left-right direction. It is possible to enhance the accuracy.

Further, in the present invention, in particular, a drilling drill that is supported so as to be vertically movable by arranging the screw stand drills in the left-right direction or the front-rear direction on the moving table, and a lifting drive device that drives the drill up and down are provided. In such a case, it is possible to automatically and sequentially perform drilling and screwing, so that the process time for fixing the floor material to the joist can be further shortened.

[Brief description of drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a rear view of the present invention.

FIG. 3 is a side view of the present invention.

FIG. 4 is a perspective view of a guide rail of the present invention.

FIG. 5 is a front view of the guide rail of the present invention.

FIG. 6 is a side view of the guide rail of the present invention.

FIG. 7 is a side view of the positioning device of the present invention.

FIG. 8 is a plan view of a movable table of the present invention.

FIG. 9 is a side view of the lateral drive device of the present invention.

FIG. 10 is a sectional view of a floor structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Frame 3 Moving stand 6 Mark hole 9,11 Drive wheel 16 Front-rear drive device 17,19 Motor 24 Positioning device 28 Sensor 37 Lateral drive device 39 Drum 44 Motor 46 pin 47 Cam groove 52 End face 52 Guide claw 53, 54 , 55 Drill 56,57,58 Lifting drive device

Claims (4)

[Claims] 1. A guide rail disposed on a floor upper surface, a frame which is guided by the guide rail to move back and forth, a front-rear drive device which moves the frame by a predetermined distance in the front-rear direction at a predetermined cycle, and a frame. A moving table that follows and moves in the front-rear direction and is guided by the frame to move in the left-right direction, a horizontal drive device that moves the moving table in the left-right direction by a predetermined distance at other fixed cycles, and ascends and descends to the moving table. A floor material fixing screw stand, comprising a screw stand drill that is supported as much as possible, a feeder that automatically supplies screws to the drill, and a lifting drive device that drives the drill to move up and down. 2. The front-rear drive device is rotatably supported on a frame about a left-right axis and is driven by a drive wheel rolling on a floor top surface or a guide rail, a front-rear drive motor for driving the drive wheel, and a guide rail. A large number of marks provided at predetermined front and rear intervals, a detector that is supported by the frame and detects the marks, and a positioning device that determines the front and rear positions of the frame when the detector detects the predetermined marks. The screw stand for fixing a floor material according to claim 1, further comprising: 3. The lateral drive device includes a pin provided on a frame at a predetermined interval in the left-right direction and a pin rotatably supported on a moving base about a left-right axis and having adjacent axial lengths. A drum formed to have substantially the same size as the gap, a left-right drive motor that drives the drum in both forward and reverse directions, a cam groove formed on the circumferential surface of the drum, into which the pin slidably projects, and the drum. 3. A floor material fixing screw stand according to claim 1, further comprising: a guide portion that is provided on both end surfaces of the floor member and that receives a pin when the drum rotates and guides the pin to the cam groove. 4. The drill for drilling, which is supported so as to be able to move up and down, and a lifting drive device for driving the drill up and down, which are arranged side by side in the left-right direction or the front-back direction of the screw stand drills, on the moving table. The screw stand for fixing floor material according to any one of 2 and 3.