JP2803615B2 - Work guide centering device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a round steel material, a prismatic steel material, an H-shaped steel material, a pipe material and the like, and has a different length and width (length of the vertical and horizontal sides). ) Also relates to a work guide centering device capable of centering.

[0002]

2. Description of the Related Art Conventionally, round steel, prismatic steel, and the like, which are mounted on the front of predetermined equipment such as flaw detectors, molding machines, and the like, have been used.
As a centering device for insertion of a long object such as an H-shaped steel material, a pipe material, and an electric wire, the long object is limited to those having the same outer dimensions in a vertical direction and a horizontal direction (a circular cross section, etc.). I was For example, Japanese Utility Model No. 1 presented earlier by the present applicant.
As disclosed in Japanese Patent No. 60732, an inner ring and an outer ring having a work insertion opening at the center having opposite rotation directions are formed as a double ring, and guide rollers are arranged on one side surface of the inner ring and the outer ring. Two sets of parallel holding shafts are arranged orthogonally in the front-rear position, and both ends of each holding shaft are supported by a lot end protruding from the inner ring and a lot end protruding from the outer ring, respectively. There is a device in which the inner ring and the inner ring are integrated with a tightening screw.

[0003]

However, in the centering device of the above construction, the four holding rollers with guide rollers disposed in parallel on the left, right, front and rear, respectively, simply have one end on the outer ring side and the other end on the inner ring. Due to the configuration supported by the universal joint type lot end protruding from the body side, two sets of a pair of guide shafts with guide rollers, which are generally in the form of a girder, can be used even when the inner ring body side with the tightening screw is rotated. The distance between the parallel holding shafts with guide rollers is only narrowed or widened evenly, and the holding to the work is performed at the same time. That is, as the work guide centering device up to now, the target work is limited to a round bar having the same outer shape in the vertical and horizontal dimensions or a work having a cross section such as a cylinder or a square. It could not cope with long workpieces (rectangular cross section, etc.) with different lateral dimensions.

In view of the above-mentioned circumstances, the present invention provides a rotating link in which two parallel guide rollers, which are two sets of four-bar mechanisms, are arranged at right angles. It is an object of the present invention to provide a work guide centering device capable of performing one-touch center guide even for works having different vertical and horizontal dimensions by using a characteristic of a planetary gear so as to be connected to a meshing small gear. .

[0005]

According to the present invention, there is provided a central inner cylindrical portion 1;
c inside a disk-shaped casing 1 in which a work insertion hole 2 is formed.
The guide roller opening / closing and fixing hank facing the outside of the casing
Drive internal gear 6 with dollar 20 and movable internal gear
The gear 7, the fixed external gear 3 on the inner cylinder portion side and the
A movable external gear 5 is provided, and the driving internal gear 6
4 of opposing gap between the internal gear 7 and the fixed external gear 3 and the movable external gear 5
A planetary gear meshed with the driving internal gear 6 and the fixed external gear 3
A movable internal gear that is inserted through and overlaps the gear 18a and the connecting shaft 19.
7. Two-stage consisting of a planetary gear 18b meshed with the movable external gear 5
Provide planetary gears 18 for revolving the structure and revolving and rotating
Each of the four planetary gears 18 forms a planetary reduction mechanism.
A link at an intermediate position that meshes with the movable internal gear 7
Small gears 8 are disposed at two symmetrical locations,
The movable external gear 5 is meshed with
The linking small gear 14 is installed and the casing 1
Shaft ends of the pair of link pinion gears 8 projecting from the front surface of
Guide rods parallel to both ends of a turning link 10 centered on 9
Rollers 11 to form a four-bar mechanism, and a pair of small links
Both of the turning links 16 around the respective shaft ends 15 of the gear 14
A parallel guide roller 17 is connected to the end to form a four-bar mechanism.
Four-sided guide rollers 11 and 17 each of which has a girder shape as a body
Flatten the work inserted between them by interlocking with the handle operation
Parallel guide roller 11 and other parallel guide rollers 17
Are held simultaneously or stepwise.

As described above, a drive internal gear and a fixed external gear and a two-stage rotatable between them are provided in a casing having a workpiece insertion hole.
Disposed planetary gear configuration, communication of these one of the planetary gears
The planetary gears receiving the revolution revolved with the connecting shaft mesh with the movable internal gear and the movable external gear superimposed on the driving internal gear and the fixed external gear, and the movable internal gear and the movable external gear mesh with a pair of small gears, respectively. Parallel guide rollers are respectively connected to the respective revolving links at the shaft ends of the small gears having the orthogonal arrangement, and the guide rollers are formed in a cross-girder shape as a whole. Is inserted, simply rotating the handle integral with the drive internal gear facing the outside of the casing causes the planetary gear, which is the planetary reduction mechanism inscribed in the drive internal gear, to revolve while rotating, and the planetary gear Only the revolution is transmitted to the second stage planetary gears rotatably arranged with each other, and the movable internal gear and the movable internal gear are rotated.

[0007] Since a pair of small gears meshing with the rotating movable internal gear and the movable external gear respectively rotate, the revolving links facing the front surface of the casing, which are the shaft ends of the respective small gears, respectively rotate. Of these, the parallel guide roller, which is a four-bar mechanism of one of the revolving links, is flattened, and comes into contact with (contacts) one of the opposing surfaces of the work.

In this case, one of the parallel guide rollers comes into contact with the long width portion first in the work having different vertical and horizontal dimensions. Under this condition, there is still a small gap in the short width portion of the work without the other parallel guide rollers abutting.

If the handle is further rotated, the movable internal gear or movable external gear on the guide roller side stopped by the contact of the work becomes immobile, but the movable external gear or movable gear on the other guide roller side becomes stationary. It does not become immovable with respect to the internal gear, so that the revolving rotation is given to the movable external gear or the movable internal gear while rotating further to the meshing planetary gear, and meshed with the movable external gear or the movable internal gear. The other small gear side rotates, the turning link at the shaft end of the small gear rotates, and the space between the other parallel guide rollers connected to this turning link is sequentially narrowed, and the remaining surface (short) of the workpiece is orthogonal. Width part).

That is, when one of the parallel guide rollers comes into contact with the work, the operation of the guide roller stops. For example, in the case of a work such as a rectangular bar having different vertical and horizontal dimensions, one parallel guide roller hits both surfaces of a long side portion which is a wide cross section and stops. At this time, the other parallel guide rollers are not yet in contact with the narrow cross-sectional side, and are appropriately separated by a gap. For this reason, if the handle is further turned, the movable external gear or the movable internal gear is rotated by the revolving operation of the planetary gear, and the other guide roller is further rolled by the deformation of the swivel link integrated with the small gear associated therewith. The gap is narrowed, and the guide roller eventually comes into contact with the work, where the centering (centering) is performed, and complete centering is completed as a whole.

As the fixing after the centering, if the handle for opening and closing and fixing the guide roller is turned and tightened tightly on the outer periphery of the casing, the driving internal gear projecting from the handle becomes immovable. Fix it. When the centering position is released after the predetermined work is completed, the handle is released in the opposite direction, and the handle is rotated in the opposite direction, so that the guide opening in the middle of the four guide rollers is widened. To enter a standby state.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings of the embodiments.

FIG. 1 shows an embodiment of a work guide centering device provided with four planetary gears. 1 is an upper casing 1a
And a lower casing 1b in combination with a disc-shaped casing having a work insertion hole 2 formed in the center thereof.
A fixed external gear 3 is fixed with a pin 4 to the center side which becomes the insertion hole side inner cylindrical portion 1c, and a movable external gear 5 is superposed on one surface of the fixed external gear 3 and the fixed external gear 3 A drive internal gear 6 provided with a guide roller opening / closing and fixing handle 20 is disposed on the casing outer frame portion 1d side with a predetermined gap a therebetween, and a movable internal gear 7 is rotatably overlapped on one surface of the drive internal gear 6. It will be installed. Reference numeral 8 denotes the movable internal gear 7 disposed at a predetermined position in the casing 1 and inscribed at symmetrical positions.
Medium with the pinion for a pair of links, the shaft 9 integral to the pinion 8 projecting from the front surface of the casing 1, the pair of the shaft end 9 that
Attach the swivel link 10 as a heart , a pair of swivels
Guide roller 1 to be parallel to both ends of links 10
The shaft portions 11a, 11a are connected to each other, and a kind of a four-bar mechanism 13 is constituted by two guide rollers 11 and two turning links 10. The other pair of link small gears 14 arranged orthogonal to the position of the pair of small gears 8 is movable.
Circumscribes the external gear 5, are projected respectively the axis 15 integral to the front of the casing 1 to the pinion 14, the respective shaft end 15
A turning link 1 which is orthogonal to the turning link 10 as a center
6 and the shaft portions 17a, 17 of the guide rollers 17, 17 to be parallel to both ends of the opposed revolving links 16 , 16.
connecting the a, and two guide rollers 17 and two pivot link 16 in the four-bar mechanism 13 '. In this case, the length of one link shaft 15 is set by the other link shaft 9, and one of the guide rollers 11 to be parallel and the other
The guide roller 17 and the guide roller 11 are formed as a kind of a cross-shaped guide opening 23 as a whole.

Reference numeral 18 denotes a gap a between the fixed external gear 3 and the driving internal gear 6, and the two small gears 8 and the small gear 1
A planetary gear of the two-stage configuration arranged at four positions as the middle position of the 4, respective planetary gear 18 is a planetary gear 18a and the planetary gear
The planetary gear 18b inserted through the connecting shaft 19 protruding from the
It is a structure that can be stacked and rotated freely. Of the two-stage planetary gears 18, one of the planetary gears 18a is a fixed external gear 3
The other planetary gear 18b is interposed between the movable external gear 5 and the movable internal gear 7 and meshed with each other. Reference numeral 21 denotes a guide slot which is notched transversely in the casing outer frame portion 1d, and a shaft portion 20a of a guide roller opening / closing / fixing handle 20 which projects with a screw on a side portion of the drive internal gear 6 is inserted into the guide slot. The head 20b faces outward, and the work guide centering device 22 is formed with the overall configuration described above.

Now, the operation will be described. First, when the handle 20 for opening and closing and fixing the guide roller is loosened and the handle 20 is turned, for example, in a counterclockwise direction, the drive internal gear 6 is simultaneously turned in the counterclockwise direction. I do. The planetary gear 18a of the planetary gear 18 interposed between the drive internal gear 6 and the fixed external gear 3 revolves while rotating, and the planetary gear 18a
The other planetary gears 18b that overlap with can only take out the revolution.

Here, the movable external gear 5 and the movable internal gear 7 rotate in synchronization with the revolution of the planetary gear 18. Between the movable external gear 5 and the movable internal gear 7, the small gear 8 and the small gear 14, which integrate the link shaft 9 and the link shaft 15, respectively, are arranged, so that the shaft 11 and the shaft 15 rotate. When the turning link 10 and the turning link 16 are tilted with the rotation,
Guide roller 11 and guide roller 1 provided respectively
7, the parallel gap is opened, and the space between the rollers at the four positions is widened. In other words, the guide port 23 formed between the four guide rollers having a generally cross-girder shape becomes large and facilitates the insertion of the work A (see FIG. 7).

Next, after inserting the work A (in this case, the work may have different vertical and horizontal dimensions), the handle 20
Is rotated clockwise, the drive internal gear 6 also rotates clockwise at the same time. At this time, among the planetary gears 18 interposed between the driving internal gear 6 and the fixed external gear 3, the planetary gear 18a revolves while rotating, and the other planetary gear 18b connects to the connecting shaft 19.
(The deceleration of the turning operation is performed). Here, the movable outer gear 5 and the movable inner gear 7 rotate in synchronization with the revolution of the planetary gear 18b.

Therefore, between the movable external gear 5 and the movable internal gear 7, a small gear 8 having shafts 9 and
And the pinion 14 are arranged so as to be interlocked with each other, and the pair of shafts 9 and 15 rotate respectively, and the turning links 10 and 16 by the rotation operation are appropriately inclined (rotational displacement), and are thereby parallelized. The guide roller 11 and the guide roller 17 that have been arranged narrow the roller interval (see FIG. 8).

Thereafter, the distance between the works of the guide rollers 11 and 17 is sequentially reduced, and one of the guide rollers 11 or 17 abuts (contacts) the work A.
Then, the operation of the guide roller 11 or 17 on the contact side stops. If one pair of guide rollers 17 comes into contact with the work A before the other pair of guide rollers 11, the small gear 14 integral with the link shaft 15 stops rotating, and accordingly the movable internal gear 7. Also stop rotating. in this case,
In the case of the work A having different vertical and horizontal dimensions, the end face Aa corresponding to the long width is first held by the rollers (see the dashed line in FIG. 8). At this time, there is still a gap b between the end surface Ab of the short width of the work A and the roller facing the same.

Next, when the handle 20 is further turned clockwise, the planetary gear 18b of the two-stage planetary gear 18
(See the two-stage planetary gear of FIG. 6) is fixed with respect to the movable external gear 5 so that only the orbital operation is performed.
Small gear 8 in which only movable internal gear 5 rotates and is integrated with shaft 9
Is rotated, the swivel link 10 further tilts, the distance between the pair of guide rollers 11 is narrowed, and the guide rollers 1
1 also comes into contact with the work A and stops. That is, the work A is vertical,
In the case of shapes having different lateral dimensions, guide rollers 17
And the guide rollers 11 abut, and the respective centering is completed (centering can be performed).

Now, this operation will be described in detail with reference to an explanatory diagram of a developed gear, as shown in FIG. In this case, movable
The external gear 5 and the movable internal gear 7 are each shown as one rack. Looking at the intermediate planetary gear 18b as a pinion,
When moving by the initial handle operation (the state where the guide rollers are not in contact with the four surfaces of the work), the planetary gear 18b, the movable external gear 5 and the movable internal gear 7 move by the amount shown by the arrow c. Here, it is assumed that one of the movable external gears 5 stops due to contact with the workpiece (see the case of FIG. 8) . That is, the movable external gear
When the gear 5 becomes immobile, the planetary gear 18 meshed with the movable external gear 5
b is moved by an amount indicated by the arrow d while rotating, opposed soluble
The moving internal gear 7 moves by an amount obtained by adding the amount of rotation and the amount of revolution of the planetary gear 18b (that is, an amount twice as large as the amount indicated by the arrow d). Therefore, only the small gear 8 meshed with the movable internal gear 7 rotates, and the operation of pinching the remaining surface of the work A between the pair of guide rollers 11 in which the turning link 10 at the shaft end remains inclined is performed.

After completion of the centering, the opening / closing / fixing handle 20 is tightened and fixed. As described above, in the device utilizing the characteristics of the planetary gear 18, the work A to be inserted into the guide port (center port) 23 of the two sets of parallel guide rollers 11, 17 has a vertical and horizontal dimension. In the case of rectangular members, elliptical members, H-beams, etc., which have different vertical and horizontal dimensions, as well as the same cylindrical members, vertical and horizontal centering can be performed in a stepwise manner, with the predetermined centering being constantly performed. Work can be carried into a predetermined device.

[0023]

As described above, according to the work guide centering device of the present invention, two external gears (a fixed external gear and a movable external gear) are opposed to each other in a disk-shaped casing in which a work insertion hole is provided. Two internal gears (drive internal gear, movable internal gear) and two separate planetary gears interposed in the middle are provided, and two small gears meshing with the movable external gear are interlocked with this. Since it is composed of a guide roller parallel to the revolving link and two small gears meshing with the movable internal gear side, the apparatus is compact and can be mounted on various apparatuses. In addition, the centering operation of the work is performed only by turning the handle facing the outside of the casing protruding from the driving internal gear, and the planetary gear meshing with the driving internal gear rotates and revolves, and other planetary gears overlapping the planetary gear. By utilizing the characteristics of a planetary gear having a decelerating effect that allows only the revolution to be taken out of the gear, the guide rollers arranged in a crossbeam (four-sided arrangement) sandwich the four sides of the work as a whole and are centered. In this case, the two sets of parallel guide rollers are parallel guide rollers with the revolving link of the four-bar mechanism at the shaft end of the small gear meshing with the movable external gear.・ Even for workpieces with rectangular cross-sections with different lateral dimensions, it can be done simply by turning the handle stepwise, and it becomes a one-touch center guide. Furthermore, since a two-stage planetary gear is used to reduce the speed by utilizing the characteristics of the planetary gear, two sets of parallel guide rollers can be moved by a light handle operation. Further, since the present invention performs the guide operation while the guide roller operates in parallel while the guide roller itself operates, unlike the conventional guide roller type which performs centering simultaneously in the X and Y directions, the effect of eliminating the work inclination phenomenon is eliminated. To play.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of a work guide centering device according to the present invention.

FIG. 2 is a partially cutaway perspective view showing the inside of the casing.

FIG. 3 is a partially cutaway explanatory view in which one guide roller is maximized and the other guide roller is minimized in the parallel guide rollers.

FIG. 4 is a longitudinal sectional view of the same.

FIG. 5 is a plan view showing an arrangement relationship between a small gear and a planetary gear.

FIG. 6 is a perspective view in which a movable internal gear, a movable external gear, and a planetary gear are separated from a disc-shaped casing.

FIG. 7 is an explanatory diagram showing a positional relationship between four cross-shaped guide rollers when inserting a work.

FIG. 8 is an explanatory view in which the handle for opening and closing and fixing the guide roller is slightly turned.

FIG. 9 is an explanatory view in which works having different vertical and horizontal dimensions are sandwiched by guide rollers and are centered as a whole.

FIG. 10 is a side view for inserting a workpiece.

FIG. 11 is a perspective view of the same.

FIG. 12 is an explanatory view showing the operation of a planetary gear by developing a movable internal gear and a movable external gear.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc-shaped casing 2 Work insertion hole 3 Fixed external gear 5 Movable external gear 6 Drive internal gear 7 Movable internal gear 8 Small gear 9 Shaft 10 Swivel link 11 Guide roller 14 Small gear 15 Shaft 16 Swivel link 17 Guide roller 18 Planetary gear 19 Connecting shaft 20 Guide roller open / close and fixed handle

Claims (1)

(57) [Claims] 1. A work insertion hole in a central inner cylindrical portion (1c).
In the disk-shaped casing (1) formed with (2), the case
Handle for opening / closing and fixing guide rollers facing outside
0) and a movable internal gear (6)
A gear (7), a fixed external gear (3) on the inner cylinder side and
And a movable external gear (5) superposed on the
Gear (6), movable internal gear (7) and fixed external gear (3), possible
The driving internal gear is provided at four places of the facing gap of the moving external gear (5).
(6) planetary gear (18a) meshed with fixed external gear (3)
And a movable internal gear that is inserted through the connecting shaft (19) and overlaps
(7), planetary gear (18b) meshed with the movable external gear (5)
Planetary teeth with two-stage orbit and orbit and rotation
A car (18) is provided to form a planetary reduction mechanism, and the four
At each intermediate position of the planetary gear (18),
Link small gear (8) meshing with car (7)
The gears (8), (8)
Ring that meshes with the movable external gear (5)
A small gear (14) for the housing and a casing (1).
Each shaft end of the pair of link pinion gears 8 projecting to the front
Parallel to both ends of the swivel link (10) centered on (9)
The guide roller (11) is connected to form a four-bar mechanism, and the other pair
Centering on each shaft end (15) of the link small gear (14)
Guide rollers (1) parallel to both ends of the turning link (16)
7) is connected to form a four-bar mechanism, and it has a cross-girder shape as a whole.
A wire inserted between the four guide rollers (11) and (17)
Parallel guide rails that flatten in conjunction with handle operation
A work guide centering device characterized in that the work guide centering device is simultaneously or stepwise clamped between a roller (11) and another parallel guide roller (17) .