JPH026030A - Device for working dimple of pc steel rod - Google Patents

Abstract

PURPOSE:To adjust the phase angle between rollers and align knots between stands by making the rollers which are arranged in a faced state where they can be moved while contacting with outer peripheral part and rotated in a tuned state adjustable in movement in the axial direction and in rotation in the rotating direction. CONSTITUTION:When a roller boss 13 is fixed to the angular spline 12 of a roller shaft 10 through a coupling pin 14, coupling plate 15, and adjusting bolt 16 and a nut which is meshed with the bolt 16 and holds the plate 15 is turned, the boss 13 can be moved in the axial direction and its fixing position to the shaft 10 can be adjusted. Moreover, when lock bolts 26 engaged with plural supporting plates 25 fixed to the outer periphery of the boss 13 on one side are loosened and plural punched bolts 24 screwed through a flange 23 formed on the outer periphery of the boss 13 on the other side are screwed in after a roller 18 is fixed to a prescribed position by means of the bolts 24 and lock bolts 26, the roller 18 can be separated from the boss 13 and turned by an arbitrary quantity in the peripheral direction.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a dimple processing apparatus for forming small depressions in a regular array on the outer surface of a PC steel bar.

(Prior Art) Automatic processing equipment has already been put into practical use for arranging dimples on the outer surface of a PC rod that is installed in a concrete structure by applying a predetermined tensile force.

(Problems to be Solved by the Invention) In conventional dimple processing devices, the arrangement of dimples is temporarily fixed by connecting each stand and each roller with gears, but manufacturing/assembly errors, wear over time, etc. There was a problem in that there was no adjustment function to actively correct the disordered arrangement caused by errors caused by the process, and it was not possible to process dimples in accordance with regulations.

The present invention has been made to solve these problems, and includes adjusting the phase angle between each roller, preventing variations in the dimple arrangement, adjusting the dimple depth, and adjusting the phase angle between each roller by adjusting the phase angle between the rollers. It is an object of the present invention to provide a dimple machining device for a PC'a rod that can be adjusted.

(Means for Solving the Problems) In order to achieve the above object, in the first PC steel bar dimple processing apparatus of the present invention, a roller having a large number of dimple processing parts on the outer periphery is moved toward and away from the machine. The rollers are disposed facing each other so as to be rotatable in synchronization, and each roller is configured to be able to adjust its movement in the axial direction and its rotation in the rotational direction with respect to the roller shaft.

In addition, in the second P (44-bar dimple processing apparatus) of the present invention, a plurality of pairs of PC steel bars are arranged with a required interval and a required inclination in the conveying direction, and in these dimple processing apparatuses, A joint adjustment mechanism is provided by changing the phase between the pair of rollers.

(Function) According to the dimple processing apparatus according to the present invention configured as described above, it is possible to adjust the phase angle between each roller, adjust the joint between each stand, and adjust the dimple depth. , and variations in the dimple arrangement are also prevented.

(Example) The following description will be made based on one embodiment not shown in the accompanying drawings.

In other words, this embodiment uses a horizontal stand (hereinafter referred to as "H stand").
1 and a vertical stand (hereinafter referred to as "V stand") 2 are combined in front and back in the conveying direction of a PC steel bar to process dimples in four directions. Note that, depending on the arrangement of the stand, it is naturally possible to perform dimple processing in two directions or six directions.

Both the H stand 1 and the stand 2 have the same structure, and include a parallel fulcrum shaft 4 mounted on the machine frame 3, and a key attached to the fulcrum shaft 4 to connect the two fulcrum shafts 4 and simultaneously connect them. A synchronized gear 5 to be rotated, a small gear 6 keyed to each fulcrum shaft 4, and a swing arm 8 loosely fitted to the fulcrum shaft 4 via a bearing 7 are provided, and a bearing 9 is further attached to one end of the swing arm 8. Through roller shaft 1
At the base end of the roller shaft 10, there is an intermediate gear 11 that meshes with the small gear 6 and transmits the rotation of the fulcrum shaft 4 to the roller shaft IO, and at the tip end there is an intermediate gear 11 as shown in FIG. As clearly shown, a square brine 12 section is provided, and a roller boss 13 is fitted into the square spline 12 section.

By the way, for example, three connecting pins 14 are installed on the outer surface of the roller boss 13, and each of these connecting pins 14 is connected to an adjustment bolt 16 installed on the end face of the square spline 12 described above through a connecting plate 15. is connected to. In other words, the roller boss 13 is fixed to the rectangular spline 12 portion of the roller shaft 10 via a connecting pin 14, a connecting plate 15, and an adjusting bolt 16, and is screwed onto the adjusting bolt 16 so that the connecting plate 1
The roller boss 13 can be moved in the axial direction by adjusting the roller boss 1-17 which holds the roller boss 5 in a pinched manner, and the fixing position with respect to the shaft can be adjusted.

Reference numeral 18 denotes a roller fitted to the outer circumferential tapered shaft portion 19 of each of the roller bosses 13. Grooves 20 of equal pitch are formed on the outer circumferential edge of the roller 18, and a roller pin 21 is fitted into the groove. The annular fixing member 2
I'm holding onto 2. The roller 18 has a plurality of draw bolts 24 threaded through a collar portion 23 formed on one outer circumference of the roller boss 13 and a plurality of lock bolts 2 threaded through a plurality of support plates 25 fixed to the other outer surface of the roller boss 13.
By loosening the lock bolt 26 and threading the pull-out bolt 24, the roller 18 is loosely fitted to the roller boss 13, and the roller 18 can be rotated by an arbitrary amount in the circumferential direction. It becomes possible to move it.

In other words, as explained above, by adjusting the fixing position of the connecting plate 15 with respect to the adjustment bolt 16, the point of action of the bottle roller 21 of the roller 18 on the PC steel bar can be moved, and this adjustment may cause wear on the pin. It will be done if

Further, by putting the roller 18 in a loosely fitted state and rotating the roller 18 according to an indicating means such as a scale (not shown), it is possible to adjust the phase angle of the roller, and after making this adjustment, the lock bolt By tightening 26, the roller 18 is fixed to the roller boss 13.

Reference numeral 27 denotes a turnbuckle that connects the vertical swing arms 8 of the H stand l and the left and right swing arms 8 of the stand 2 described above via arms 28, and by adjusting the turnbuckles 27, the stands can be made to face each other. It is possible to adjust the interval between the rollers 18, that is, the amount of rolling of the pin roller 21 with respect to the PC steel bar, and thereby determine the depth of dimple processing.

Reference numeral 29 denotes an interlocking mechanism, which consists of a plurality of sets of bevel gears 30 and a shaft 31 that connects them, and is processed by the opposing rollers of each stand by the interlocking mechanism 29, which is a gear connection with such a small backlash. Fluctuations in dimple arrangement are prevented.

Although not shown in the drawings, a drive motor is interposed at an appropriate location of the interlocking mechanism 29.

Reference numeral 32 denotes an articulation joint interposed on the shaft 31 of the drive mechanism 29, and as shown in FIG. A nut 35 that screws in and connects the two wheels, and a J-nut 35
It consists of a lock nut 36 and a helical gear 37 that meshes between the inner and outer cylinders interposed on one shaft 31. When the lock nut 36 is loosened and the nut 35 is rotated, the helical gear 37 is rotated depending on the direction in which the nut 35 is rotated. The outer cylinder moves to the right or left, and the phase changes between the inner and outer cylinders due to the helix angle of the helical gear 37, and this phase change allows adjustment of the joint between the H stand 1 and the V stand 2. .

Although not shown, the roller 18 of each stand is
A roller position holding mechanism is provided to prevent the C steel bar from slipping from the pass line, and in practice, a device consisting of a combination of two stands is installed at the required spacing and inclination along the pass line. A plurality of dimples are arranged and the arrangement of dimple processing is determined.

(Effects of the Invention) Since the present invention is configured as described above, it produces the effects described below.

That is, it is possible to adjust the gap between the rolls of each stand and the phase between the rolls, thereby making it possible to adjust the dimple depth and the dimensions shown in FIG. 5. In addition, it is possible to adjust the joint by changing the phase between the pair of rollers on both stands of the device, thereby achieving the inter-part dimension B shown in Figure 5.
is adjusted.

The rollers are connected by a drive mechanism that includes gears with low backlash, ensuring reliable synchronized rotation and preventing variations in the dimple arrangement.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is a detailed cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. The figure is IV- in Figure 3.
FIG. 5 is an explanatory diagram showing an arrangement example of dimple processing and adjustment dimensions for a PCw4 bar, and FIG. 6 is a cross-sectional view showing the structure of an articulated joint. 1 is an H stand, 2 is a V stand, 4 is a fulcrum shaft, 5 is a tuning gear, 6 is a small gear, 8 is a swing arm, 10 is a roller shaft, 11 is an intermediate gear, 12 is a square spline, 13 is a roller boss, 14 15 is a connecting pin, 15 is a connecting plate, 16 is an adjustment bolt, 17 is a nut, 18 is a roller, 21 is a roller pin, 24 is a draw bolt, 26 is a lock bolt, 27 is a Kuhnnoy bolt, 29 is an interlocking mechanism, 32 is a knot mating joint.

Claims (2)

[Claims] (1) A device for processing dimples on a PC steel bar,
Rollers with a large number of dimples on the outer periphery are arranged facing each other so that they can move toward and away from each other and rotate in synchronization, and each of these rollers can be adjusted to move in the axial direction and rotate in the rotational direction with respect to the roller axis. A dimple processing device for a PC steel bar, characterized in that it is configured to enable. (2) A plurality of pairs of the dimple processing apparatus according to claim 1 are arranged with a required interval and a required inclination in the conveying direction of the PC steel bar, and a gap between the pair of rollers in these dimple processing apparatuses is provided. A dimple machining device for a PC steel bar, characterized by having an interposition adjustment mechanism based on a phase change.