JPH074094Y2 - Side trimmer for strip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a side trimmer for trimming a strip such as a steel plate.

[Conventional technology and its problems]

As is well known, a side trimmer is arranged in the pickling line for strip steel plates. This side trimmer consists of an upper spindle with a rotary cutter attached to the tip and a lower spindle with another rotary cutter attached to the top and bottom. Then, the ears of the steel plate are passed between the upper and lower rotary cutters to perform predetermined trimming.

The upper and lower rotary cutters are subjected to lap adjustment and clearance adjustment due to differences in plate thickness, material, etc., through which the plates pass, blade wear, and the like.

For example, regarding the lap adjustment disclosed in Japanese Patent Publication No. 54-15151, the upper and lower spindles are eccentrically supported by the upper and lower housings, and gears forming a so-called worm jack are provided on the outer circumferences of these housings. In addition to engraving, horizontal wedges are applied to these housings to prevent them from rotating. Therefore, if you try to adjust the lap, loosen the contact of this horizontal wedge,
When the gears of the housing are rotated by the worm, the upper and lower spindles that are eccentrically supported in each housing move in the radial direction, so that the rotary cutter can perform lap adjustment. Then, when the lap adjustment is completed, a horizontal wedge is brought into contact with each housing to prevent rotation.

Further, regarding the clearance adjustment shown in the publication, if the vertical wedges having bolts are engaged with the outer circumference of the upper housing to adjust the clearance,
Loosen the bolt and move one vertical wedge upwards,
When the other vertical wedge is moved downward, the upper housing moves in the axial direction by the inclination of the wedge moved downward, so that the rotary cutter can adjust the clearance.
Then, if the clearance is adjusted, the other wedges are moved downward and locked.

However, since each fixing after the lap adjustment and the clearance adjustment in such a side trimmer is separately performed by a manual operation, it takes time and labor, and there is a possibility that the adjustment of the other side may occur while fixing one.

[Means for Solving the Problems]

Therefore, the present invention has been devised in order to eliminate such inconvenience, and the gist of the present invention is that the spindles (1) and (18) equipped with the rotary cutters (19) and (20) at the tips are moved up and down, respectively. In a side trimmer in which one pair is provided and a side plate is passed between the rotary cutters (19) and (20) to perform side trimming, the housing (2) supporting the one spindle (1) is a main body. A frame (3) is provided slidably in the vertical direction, and a main body frame (3) is provided with a first worm jack for moving the housing (2) in the vertical direction, and the one spindle (1) is attached to its shaft. Screw shaft (12) for engaging and engaging the second worm jack for moving in the direction with the spindle (1)
And a worm wheel (13) screwed to the screw shaft (12)
And a worm (15) that meshes with the worm wheel (13)
And a worm jack box (14) for rotatably holding the worm wheel (13). The worm jack box (14) is fixed to the housing (2) and the body frame (3 ) For attracting or pressing the screw shaft (12) to ()
In the side trimmer for strips, which is characterized by having.

〔Example〕

 The present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.

FIG. 1 is a vertical sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG.

This embodiment is suitable for a side trimmer for trimming a strip steel plate having a plate thickness of 1.2 mm to 5.8 mm, for example, so that the clearance is 0.13 to 0.15 when the plate thickness is 1.2 <t ≦ 1.6. Adjust or overlap 0.48 to 1.
It is also adjusted to 2 mm.

In these figures, the upper spindle 1 is in front of and behind the housing 2 (in FIG. 1, the left and right directions; the same applies hereinafter).
The housing 2 is supported by the body frame 3 via the bearings 1a and 1b.

That is, the worm jack box 4 is fixed to the upper end of the body frame 3, and the pillars 3a, 3b,
Liners 5, 5 ... Are attached to the outer surfaces of 3c and 3d. Therefore, the housing 2 is the warm jack box 4
It is suspended by two screw shafts 6 projecting from it, and is guided slidably in the vertical direction by these liners 5. These screw shafts 6, 6 constitute the rotating shafts of the wrap worm wheels 7, 7 rotatably held by the worm jack box 4. These wrap worm wheels 7, 7 mesh with a worm 8 driven outside the worm jack box 4. The screw shafts 6 are fixed to the housing 2 with bolts (not shown). A front bearing 1a supporting the spindle 1 is fitted so as to be slidable in the large diameter portion 9 bored in the housing 2 in the axial direction.

A rear bearing 1b supporting the spindle 1 is fitted and locked to a bearing cartridge 10, and the bearing cartridge 10 is prevented from rotating on the housing 2 via a slide key 11. A hollow screw shaft 12 is projected from the rear end of the bearing cartridge 10, and the hollow screw shaft 12 is
It constitutes the rotating shaft of the clearance worm wheel 13 that constitutes a so-called worm jack.

The clearance worm wheel 13 is rotatably held by a worm jack box 14, and a vertical worm 15 is attached to the worm jack box 14.
The worm 15 meshes with the clearance worm wheel 13. The worm jack box 14 is fixed to the outer surface of the housing 2.

An operating shaft 16 extending from the rear end of the upper spindle 1 is loosely fitted in the hollow screw 12, and a blade replacing hydraulic cylinder 17 is attached to the rear end of the operating shaft 16.

A lower spindle 18 is provided below the upper spindle 1, and the lower spindle 18 is directly supported by the body frame 3 via front and rear bearings 18a and 18b. The lower spindle 18 is not provided with any device for adjusting lap and clearance.

Rotary cutters 19 and 20 are detachably attached to the tips of the upper and lower spindles 1 and 18, respectively.

Therefore, in order to adjust the lap of the rotary cutters 19 and 20, if the worm 8 is rotated by an appropriate forward / reverse rotation motor, the wrap worm wheels 7 and 7 are rotated while being held in the worm jack box 14. So
The screw shaft 6 inserted in the wrap worm wheel 7 in a screwed state moves in the vertical direction. Therefore, the housing 2 slides up and down with respect to the body frame 3 with the liner 5 as a guide surface, so that the rotary cutter 19 can adjust its lap with respect to the rotary cutter 20.

Next, in order to adjust the clearance, if the worm 15 is rotated by an appropriate forward / reverse rotation motor, the clearance worm wheel 13 rotates while being held by the worm jack box 14. The hollow screw shaft 12 inserted in the screwed state moves in the front-rear direction. Therefore, bearing cartridge
Since 10 moves, the upper spindle 1 moves in the front-rear direction together with the rear bearing 1b, and the rotary cutter 19 can adjust the clearance of the rotary cutter 20.

After these adjustments, the contact portions B and C between the housing 2 and the liner 5 between the worm jack box 14 and the clearance worm wheel 13 and the screw fitting portion between the clearance worm wheel 13 and the hollow screw shaft 12 Since a small amount of play (for example, 0.050 mm) remains in D and the like, this embodiment is provided with the following attracting device for removing play.

That is, a cylinder support 21 having a substantially U shape in a plan view is provided behind the body frame 3 and the cylinder support 21
A lock hydraulic cylinder 22 is attached to the rear end. On the other hand, a holding plate 23 is fixed to the rear end surface of the hollow screw shaft 12 described above, and the holding plate 23 is pulled backward by the operation of the lock hydraulic cylinder 22. That is, an attracting plate 24 for abutting against the pressing plate 23 to attract it is connected to the piston rod 25 of the lock hydraulic cylinder 22 via the clevis 26, the pin 27 and the pair of connecting plates 28, 28. There is.
In addition, the blade replacement hydraulic cylinder 1 is provided between these connecting plates 28, 28.
7 is facing.

Therefore, when the above-mentioned lap adjustment and clearance adjustment are completed, the hydraulic pressure is sent to the lock hydraulic cylinder 22, and the presser plate 23 is moved by the piston rod 25 via the clevis 26, the pin 27, the connecting plate 28 and the attracting plate 24. Since it is attracted rearward, the hollow screw shaft 12 moves slightly rearward, and the hollow screw shaft 12 causes the clearance worm wheel 13 to
The clearance worm wheel 13 attracts the case 14 together with the housing 2 to the rear, and the housing 2 is closely attached to the rail 5. Therefore, the play of each part (B, C, D, etc.) can be removed by these slight movements.

In this embodiment, the upper spindle is provided with the worm jack to adjust the lap and the clearance. However, the present invention is not limited to this, and the lower spindle may be provided with these adjusting devices. Further, the attracting device of this embodiment is attracted and locked by the locking hydraulic cylinder, but the present invention is not limited to this, and a device such as a hydraulic jack, a worm jack and a rack and pinion mechanism that can be remotely operated. It may be pressed or attracted with. Also,
The upper and lower spindles may be rotated by a drive motor.

[Effect of device]

According to the present invention, the clearance and the lap adjustment of the rotary cutter of the side trimmer are adjusted by the mechanical devices called the first and second worm jacks. A second worm jack for clearance adjustment, which is allowed but does not allow play, between the screw shaft (12) and the worm wheel (13), between the worm wheel (13) and the worm jack box (14). , Each backlash between the housing (2) and the main body frame (3) is efficient at once,
That is, it can be removed with one backlash removing device,
You can adjust the clearance without wrapping, and the thickness of the strip at the shearing of the ears, for example, 1.2 to 5.8 mm, 10 to 20% of that.
It is possible to obtain a very small value of aptitude clearance.

As a result, for example, it is possible to prevent ear cracks that tend to occur during cooling and rolling after shearing the edge of the strip.

Particularly, in a side trimmer that adjusts the lap and the clearance by moving only one of the pair of upper and lower spindles in the vertical and axial directions, one spindle (1 ) Is slid in the vertical direction, a slight amount of backlash is generated there. However, the backlash between the main body frame (3) and the housing (2) also causes a worm jack box. Since (14) is fixed to the housing (2), it can be removed together with the play of the second worm jack.

As a result, the device for lap and clearance adjustment (installed on only one spindle) and the device for removing backlash can be simplified and can be provided at low cost, and adjustment and backlash removal operations can be easily performed, causing troubles, etc. This makes it convenient for maintenance and inspection.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. 1 ... Upper spindle, 4,14 ... Worm jack box, 6 ... Screw shaft, 7 ... Wrap wheel for lapping, 8,
15 …… Worm, 12 …… Hollow screw shaft, 13 …… Clearance worm wheel, 18 …… Lower spindle, 19, 20 ……
Rotary cutter, 22 …… Locking hydraulic cylinder, 23 ……
Presser plate, 24 ... attracting plate.

Claims (1)

[Scope of utility model registration request] 1. A pair of upper and lower spindles (1) and (18) respectively provided with rotary cutters (19) and (20) at their tips, and a strip plate between these rotary cutters (19) and (20). In a side trimmer for side trimming by passing through a plate, a housing (2) supporting the one spindle (1) is provided on a body frame (3) slidably in the vertical direction, and the body frame (3) Is provided with a first worm jack for vertically moving the housing (2), and a second worm jack for axially moving the one spindle (1) is fitted and engaged with the spindle (1). Screw shaft (12), worm wheel (13) screwed to the screw shaft (12), worm (15) meshing with the worm wheel (13), and the worm wheel (13) are rotatable Hold on war A jack box (14) for fixing the worm jack box (14) to the housing (2) and for attracting or pressing the screw shaft (12) to the body frame (3). A side trimmer for a strip, which is provided with a device (21, 28).