JPH0692005B2 - Holding device for masher roll for high-speed trimming line - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a masher roll holding device for crushing burrs caused by side trimming of a strip-shaped metal plate such as a cold-rolled steel plate, and particularly to a masher roll suitable for a high-speed trimming line. Holding device.

<Prior art> When a strip-shaped metal plate such as a cold-rolled steel strip is side-trimmed,
As shown in FIG. 1, there is a burr on both ends of the strip-shaped metal plate 1.
Occurs. Therefore, not only the quality of the product is deteriorated, but also the roll surface is scratched by the burr a when passing through the post-process, or the coil is loosened when wound on a reel, and the product sheet after coil handling or after shearing. When handling, this burr a causes inconvenience such as injury of a worker.

Therefore, a deflector roll 3 is provided as shown in FIGS. 3 and 4 after the conventional side trimmer, and the deflector roll 3 is brought into close contact with the surface of the strip-shaped metal plate 1 without the burr a,
The masher roll 4 having a convex crown is pressed against the burrs a at both ends of the strip-shaped metal plate 1 to crush the burrs a, thereby forming a substantially flat edge without the burrs a as shown in FIG. 2b. The device is in use.

This masher roll device includes a masher roll position changing mechanism for changing the position of the masher roll 4 according to the width of the strip metal plate 1 after the normal trimming, and a masher for pressing the masher roll against the edge portion of the strip metal plate 1. A roll pressing mechanism is incorporated, and FIGS. 4 and 5 show an example of the structure of a conventional masher roll device having such a mechanism. 4 is a side view (view taken along the line BB of FIG. 5), and FIG. 5 is a sectional view taken along the line AA of FIG.

In FIGS. 4 and 5, 1 is a strip-shaped metal plate, which is wound around the deflector roll 3 and advances in the direction of the arrow in FIG. At the contact portion of the strip-shaped metal plate 1 to the deflector roll 3, the masher roll 4 holds a pair of masher rolls so that the smasher roll 4 having the convex radial crown is pressed against the edge portion of the strip-shaped metal plate 1 to rotate. It is held by the arms 5a and 5b. The masher roll holding arms 5a and 5b are connected and fixed to the tip of the moving table 15. The movable table 15 is guided and held via a pair of movable table guide rods 9 and 10 having both ends fitted and fixed to mutually parallel movable table holding frames 6a and 6b via bushes 14 and 14, respectively. Screw rod bearings 30a and 30b are attached to the masher roll holding frames 6a and 6b, respectively, and the rotary shafts 31a and 3b are attached to both ends by these bearings 30a and 30b.
A screw rod 7 having 1b is rotatably held. The rotating shaft 31a penetrates the screw rod bearing 31a and extends to one side, and a handle 32 for rotating the screw rod 7 in the forward and reverse directions is fixed to the tip thereof. In this example, an example in which the screw rod 7 is rotated by the handle 32 is shown, but there is also an example in which the screw rod 7 is rotationally driven by a motor or the like not shown. A fixing nut 8 having a female screw that fits into the male screw of the screw rod 7 is fitted and fixed to the moving table 15. When the screw rod 7 is rotated by the handle 32, the moving base 15 moves in the longitudinal direction of the screw rod 7 according to the rotating direction,
The position of the masher roll 4 can be changed according to the width of the strip metal plate 1 so that the inclined surface of the convex radial crown of the masher roll 4 can be adjusted so as to come into contact with the edge of the strip metal plate 1.

Both sides of the movable table guide rod 9 have a diameter slightly smaller than that of the central portion, are fitted into the holes of the movable table holding frames 6a and 6b, and are fixed keys 13a and 13b with the movable table holding frames 6a and 6b.
The guide rod 9 is fixed so as not to be rotatable relative to each other, and the shaft ends of the guide rod 9 serve as rotation shafts 33a and 33b of the masher roll holding device. These rotating shafts 33a, 3
3b is a pair of masher roll rotary bearings 34a, 34b fixed to a masher roll rotary bearing fixing base 35,
Each is rotatably held. Rotating shaft 33a
Extends through the rotary bearing 34a to the outside in the width direction of the strip-shaped metal plate 1, and is connected to one end of the masher roll pressing transmission lever 11 via the fixed key 13a. The other end of the pressing lever 11 is connected by a link 36 to the cylinder rod 12b of the masher roll pressing cylinder 12a. The side of the pressing cylinder 12a opposite to the cylinder rod is rotatably held by a rotating bearing 37 fixed to a pressing cylinder rotating bearing fixing base 38 via a pin (not shown).

With such a configuration, by moving the cylinder rod 12b of the pressing cylinder 12a in and out, the masher roll pressing conduction lever 11 rotates the masher roll rotating shaft 33a, and the entire masher roll holding device rotates the rotating shafts 33a and 33b.
As a result, the smasher roll 4 is separated from the band-shaped metal plate 1 or pressed against the band-shaped metal plate 1. Strip metal plate 1 of masher roll 4
To change the position in the width direction of the
By removing 12b from the cylinder 12a, the masher roll 4 is separated from the metal strip 1 and the handle 32
Thus, the screw rod 7 is rotated forward and backward in a predetermined direction.

<Problems to be Solved by the Invention> The masher roll holding device in the above masher roll device has the following drawbacks.

With the recent increase in the speed of cold-rolling lines, it has become necessary to pass through the side trimming line at a higher speed than before. Although there was no problem at the conventional striping speed of 600 to 1200 m / min, when high-speed striping is performed at a speed higher than this, lateral shake of the masher roll occurs, and as shown in FIG. 7 (b), for example, A wavy crush mark was generated on the edge of the strip-shaped metal plate, which caused a problem of impairing the edge quality of the product.

Such lateral shake of the masher roll is caused by the masher roll holding arms 5a and 5b, the movable base 15, the movable base holding frame.
Lateral runout due to weak rigidity of the entire holding device such as 6a and 6b, and lateral runout due to the gap G between the male screw of the screw rod 7 and the female screw of the fixing nut 8 as shown in FIG. Conceivable.

The masher roll 4 has a bearing (not shown) inside, and is rotatably attached to the masher roll rotating shaft 4 ′ through the bearing so as to be free from lateral shake. Since both ends of ′ are fixed to the tip ends of the masher roll holding arms 5a and 5b by using unillustrated bolts or the like, the masher roll 4 itself does not cause lateral shake.

In order to prevent the lateral shake of the masher roll 4 at the time of high speed plate passing as described above, the masher roll holding arm 5a,
5b, the movable base 15, the movable base holding frames 6a, 6b, and the like, and the rigidity of the entire holding device is increased, and the gap G (the sixth screw) between the male screw teeth of the screw rod 7 and the female screw teeth of the nut 8 is increased. It is necessary to prevent lateral shake due to (see the figure). This gap G needs a certain value for the smooth movement of the moving table 15, and since this value increases with the wear of the threaded portion, in order to realize high-speed threading on the trimming line, How to prevent the lateral shake due to the gap G has been a problem.

The present invention eliminates the drawbacks of the conventional masher roll holding device as described above, prevents lateral shake of the masher roll during high-speed passage of the side trimming line, and achieves high-speed trimming that can obtain good strip-shaped metal plate edge quality. An object of the present invention is to provide a holding device for a masher roll.

<Means for Solving Problems> A masher roll holding device for a high-speed trimming line according to a first aspect of the present invention, presses a masher roll having a convex crown against a strip-shaped metal plate conveyed on a deflector roll, Opposite 1 of the masher roll device for crushing the burr on the edge portion of the strip-shaped metal plate caused by the side trimming
A pair of movable base holding frames, a movable base guided by two mutually parallel guide rods hung over the movable frames, one or a plurality of fixing nuts fixed to the movable base, and this fixing A masher roll comprising a screw rod fitted in a nut and having both ends supported by the rotary bearings of the pair of holding frames and capable of forward and reverse rotation, and a pair of masher roll holding arms connected and fixed to the movable table. In the holding device, one or a plurality of fixed nuts fixedly mounted on the movable table or a space between the movable table holding frame and the movable table is pressed or pulled by a biasing means such as a spring or a fluid pressure cylinder. By doing so, the gear between the male screw teeth of the screw rod and the female screw teeth of the one or more fixed nuts fixedly mounted on the movable table is provided. It is intended to prevent the moving base of the horizontal deflection due to the flop.

The masher roll holding device for a high-speed trimming line according to a second aspect of the present invention is the masher roll holding device according to the first aspect of the present invention, further comprising a pair of side faces of the masher roll holding arms connected and fixed to the moving table and the moving member. A slide plate biased by a spring is interposed between the side surface of the table and the side surface of the table to prevent lateral displacement of the masher roll holding arm due to a gap between the masher roll holding arm and the moving table.

<Operation> Due to the urging force of the spring or fluid pressure cylinder, the masher roll, masher roll holding arm, masher roll moving base, masher roll lateral feed screw rod, and fixing nut are pressed to one side and integrated into a strip shape. Since the masher roll is firmly held against slight vibration during high-speed passage of the metal plate, the burr-crushing marks after side trimming of the edge of the strip-shaped metal plate due to the lateral shake of the masher roll becomes wavy to improve product edge quality. The passage speed of the side trimming line can be increased without any damage.

<Example> The structure of the present invention will be described based on an example shown in FIGS. 8 and 9. FIG. 8 is a side cross-sectional view of the entire masher roll device (a view taken along the line CC in FIG. 9) adopting the masher roll holding device according to the present invention, and FIG. 9 is a partially omitted plan view of FIG. is there.

In the figure, 1 is a strip-shaped metal plate which is wound around the deflector roll 3 and advances in the direction of the arrow in FIG. A bearing built in the masher roll 4 so that the masher roll 4 having a convex radial crown is pressed against the edge portion of the strip-shaped metal plate 1 at the contact portion of the strip-shaped metal plate 1 to the deflector roll 3 so as to rotate (Fig. The masher roll 4 is held by a masher roll rotating shaft 4 ′ via a not shown). Both ends of the masher roll rotating shaft 4'are fixedly held by the tips of the pair of masher roll holding arms 5a, 5b by bolts (not shown) or the like. The movable table 15 includes a pair of movable table constituent plate members 15 that face each other in parallel at a predetermined interval in order to increase rigidity.
It is configured by connecting a and 15b with a moving base connecting pipe member 15C, and this moving base 15 is a masher roll holding device mounting base.
Mutually parallel moving table holding frames 6a, 6b fixed to 47
A pair of movable table guide rods 9, both ends of which are fitted and fixed to
10 is guided and held via bushes 14, 14 ... Screw rod bearings 30a and 30b are attached to the masher roll holding frames 6a and 6b, respectively, and the screw rod 7 having rotary shafts 31a and 31b at both ends is rotatably held by these bearings 30a and 30b. . Rotating shaft 31
a extends long through the screw rod bearing 30a, and its tip is connected via a shaft coupling 40 to a rotating shaft of a motor 39 fixed to a masher roll device mounting base 47 via a motor mounting base 48. ing. The motor 39 is
It is a hydraulic or electric type geared motor that can rotate forward and backward. A fixing nut 8 having a female screw that fits into the male screw of the screw rod 7 is fitted and fixed to one of the moving base forming plate members 15a of the moving base 15, and is fixed to the other moving base forming plate member 15b. A bush 14 is fitted into the screw rod 7 so as to be rotatable relative to each other.

Then, when the screw rod 7 is rotated by rotating the motor 39 in a desired direction, the movable base 15 moves in the longitudinal direction of the screw rod 7 in accordance with the rotating direction, and the strip-shaped metal plate 1 is rotated. The position of the masher roll 4 can be changed according to the width, and the inclined surface of the convex radial crown of the masher roll 4 can be adjusted so as to contact the edge of the strip-shaped metal plate 1. Both ends of the movable table guide rod 9 serve as rotating shafts 33a and 33b that are rotatably supported by masher roll rotating bearings 34a and 34b fixed to the movable table holding frames 6a and 6b. Rotation axis
At the end of 33a, the boss 11b at one end of the masher roll pressing conductive lever 11a is fitted and fixed by the fixing key 13a, and the other end of the conductive lever 11a is linked by the link 36 to the cylinder rod of the masher roll pressing cylinder 12a. It is linked to 12b. Cylinder rod 1 of pressing cylinder 12a
The opposite side of 2b is rotatably held by a pin (not shown) in a cylinder rotation bearing 37 having one end fixed to a masher roll device mount 47.

The movable table guide rod 9 is provided with a key groove 13c over a predetermined length in the longitudinal direction. Holding arm 5
Bosses 5c and 5d are provided on a and 5b, and the masher roll holding arms 5a and 5b can be moved by the key groove 13c of the moving base guide rod 9 and the slide key 13b fitted in the key grooves of the bosses 5c and 5d. It is held so as to be able to move laterally (slide) with respect to the movable table guide rod 9 without rotating. Boss 5c,
The moving base plate member 15a sandwiched by 5d and the boss 5
Liners 19 and 19 are sandwiched between c and 5d so that the three members come into close contact with each other through the liners 19 and 19 without any gap.

A mounting bracket 41 for mounting the cylinder rod 43 of the U-shaped moving table energizing fluid pressure cylinder 44 is fixed to the upper part of the pair of moving table constituting plate members 15a and 15b of the moving table 15 with bolts. The end portion of the cylinder rod 43 is connected to the cylinder rod mounting portion 42 at the inner end portion of the mounting bracket 41 via a pin. Fluid pressure cylinder for moving table
The bottom portion of 44 is fixed to the movable table holding frame 6b via the cylinder mounting table 45.

In this embodiment, the moving table 15 is composed of a pair of moving table constituent plate members 15a and 15b. However, if the moving table 15 has sufficient rigidity and guarantees smooth movement of the moving table, one moving table is provided. You may comprise only a plate member.

Then, while the masher roll is in operation, the motor 39 is stopped, and the moving table urging cylinder 44 urges the moving table 15 in one direction to move the masher as shown in FIG. A biasing force F acts on the roll lateral feed fixing nut 8 to constantly press the female screw teeth of the fixing nut 8 against the male screw teeth of the screw rod 7, thereby to ensure that there is a clearance between the female screw and the male screw teeth. Lateral shake of the masher roll due to the gap G is effectively prevented. Further, in order to change the position of the masher roll 4, the cylinder rod of the masher roll pressing cylinder 12a is extended to separate the masher roll 4 from the strip-shaped metal plate 1, and then the fluid in the movable table urging fluid pressure cylinder 44 is moved. The motor 39 may be rotated in a predetermined direction with the pressure lowered.

Next, the construction of the second aspect of the present invention will be described based on the second embodiment shown in FIGS. 11 to 14.

FIG. 11 is a partially omitted side view of the masher roll device incorporating the masher roll holding device according to the present invention (a view taken along the line EE of FIG. 12), and FIG. 12 is a partially omitted plan view of FIG. 11. ,
FIG. 13 is an enlarged cross-sectional view of a main part within a dashed line of FIG. 12 (cross-sectional view taken along the line H-H of FIG. 14), and FIG. 14 is a side view taken along the line G-G of FIG.

In the first embodiment shown in FIG. 8 and FIG. 9, the fluid pressure cylinder 44 urges the moving fifteenth member in a certain direction to move the teeth of the male screw of the screw rod 7 and the teeth of the female screw of the nut 8. It is configured to prevent lateral shake of the masher roll due to the gap between them, and also the boss portions 5c and 5d of the masher roll holding arms 5a and 5b and the moving base constituting plate member 15a sandwiched by the boss portions 5c and 5d.
The liner 19a, 19b is sandwiched between the liner 19a and the liner 19b so as to make the gap as small as possible, and the lateral shake of the masher roll 4 due to the gap is prevented.

On the other hand, this embodiment has the same structure as the first embodiment except for the following structure. That is, first, the lateral feed screw rod 7 of the masher roll.
In order to prevent lateral run-out due to the gap between the teeth of the male screw and the teeth of the female screw of the masher roll lateral feed fixing nut 8 fitted and fixed to the moving table, move as shown in FIG. The base 15 is a pair of movable base forming plate members 15 facing each other in parallel.
a and 15b are connected and integrated by a moving base connecting pipe member 15c having both ends sandwiched therebetween and fixed by welding, and the center of the inside of the moving base plate members 15a and 15b and the connecting pipe member 15c is screwed. The rod 7 penetrates. This screw rod 7
In order to be fitted with,
The fixing nut 8 is fixed internally. An adjusting nut 16a is built in the other moving base forming plate member 15b so as to fit with the screw rod 7. This adjusting nut 1
The outer periphery of 6a and the inner periphery of the fitting hole 16b of the adjusting nut 16a of the moving base component plate member 15b are threaded so as to fit with each other, and the pitch of this screw is the screw rod 7, fixed Adjusting nut 16a has the same dimensions as nut 8.
The axial position of the screw rod 7 can be adjusted to some extent.

An appropriately compressed spring 17 is inserted between the fixed nut 8 and the adjusting nut 16a so as to push the respective nuts 8 and 16a to the outside. Since the side surface between the tooth and the tooth of the male screw of the screw rod 7 acts so as to always contact,
It is possible to prevent lateral shake of the masher roll due to the gap between the teeth.

If the force for pressing the female screw teeth of the fixing nut 8 and the adjusting nut against the male screw teeth of the screw rod 7 is too weak, the lateral deviation of the masher roll 4 cannot be effectively prevented. The position of the masher roll 4 cannot be changed smoothly by the forward / reverse rotation of 7, and an excessive force is required for rotation.
Since the capacity of 39 also needs to be large, it is necessary to appropriately select the spring coefficient and length of the spring 17. Further, the pressing force can be adjusted within a certain range. That is, if the adjusting nut 16a is screwed into the fixed nut 8 side, the pressing force becomes strong, and conversely, if the adjusting nut 16a is moved away from the fixed nut 8 side, the pressing force becomes weak.

In order to prevent the amount of compression of the properly set spring 17 from changing due to the rotation of the adjusting nut 16a due to vibration, the outer periphery of the adjusting nut 16a and the adjusting nut fitting hole 16b of the moving base component plate member 15b are , At least one each,
Preferably, a plurality of key grooves are cut in the axial direction of the screw rod 7, and the key nuts for preventing rotation are driven by aligning the key grooves on both sides of these key grooves so that the adjusting nut can be fixed.

Next, the masher roll holding arms 5a and 5b are slidably fitted to the guide rod 9, the inner side surfaces of the respective boss portions 5c and 5d, and the moving base sandwiched by these boss portions 5c and 5d. In order to prevent the lateral shake of the masher roll due to the gap between the one side plate 15a of the movable table 15a and the side surfaces on both sides, the second embodiment uses the following means. That is, as shown in FIG. 13 and FIG. 14, liners 19a and 19b are sandwiched in these gaps, a slide plate 20a is further sandwiched between the liner 19a and the inner side surface of one boss 5c, and then a plurality of slides are formed. Pin 20b, boss
5c is inserted into the axial through hole 20c of the guide rod 9 which is symmetrically arranged on the concentric circle, and the head of the slide pin 20b is sandwiched by the spring 21 with the set screw 22 attached to the other side surface of the boss 5c. It is designed to be pressed.

Therefore, in the second embodiment, the fixing nut 8 and the adjusting nut 16 which are fixedly incorporated in the component plate members 15a and 15b of the moving table 15 are provided outside at both ends of the spring 17 adjusted to have an appropriate compression amount. Since it is always pressed with an appropriate pressing force to
These nuts 8 and 16 when using the masher roll device
The teeth of the female screw and the sides of the teeth of the male screw of the screw rod 7 can be kept in contact with each other, and the lateral deviation of the masher roll 4 due to the gap between the teeth of the male screw and the female screw can be prevented. The forward / reverse rotation of the screw rod 7 can be smoothly performed with a small driving force, and the position adjustment of the strip metal plate of the masher roll 4 in the width direction can be smoothly performed. Incidentally, as in the first embodiment, since the hydraulic cylinder is not used for urging the moving table, the equipment as a whole can be inexpensive, and when changing the position of the masher roll, complicated cylinder operation during masher roll operation is required. There is no need, and the amount of operation can be reduced.

In addition, the spring 21 compressed by the plurality of setscrews 22 can always press the slide plate 20a uniformly on the side surfaces of the liner 19a and the moving base component plate member 15a via the slide pin 21. Result smasher roll holding arm
Since both side surfaces of the moving table constituting plate member 15a can be sandwiched between the inner side surfaces of the boss portions 5c, 5d of the 5a, 5b with the proper force via the slide plate 20a, the liner 19a and the liner 19. As well as being able to effectively prevent lateral shake of the masher roll, the liner as in the first embodiment can be effectively prevented.
19a, 19b only, the inner side surface of the boss 15c, 15d and the moving base plate
It does not require fine adjustment of the liner thickness as compared with the method of minimizing the gap between both side surfaces of 15a, and these liners 19a, 19b, slide plate 20a, side surfaces of boss 5d, etc. Even if it is worn out, the pushing force of the spring 21 can always prevent the swash roll 4 from lateral deviation.

Further, in the second embodiment, the fixing nut 8 and the adjusting nut are
Although a compression spring 17 is inserted between the compression spring 17 and 16a and the nuts 8 and 16a are pressed outward by the repulsive force, a properly stretched spring is inserted instead of the compression spring 17, and By connecting both ends of the nuts to the side surfaces of the fixed nut 8 and the adjusting nut 16a by an appropriate means, even if these nuts are pulled inward by the pulling force of the spring, the same effect as above can be expected.
It goes without saying that the lateral shake of the movable table due to the gap between the teeth of the male screw and the female screw is effectively prevented and the lateral shake of the masher roll 4 is reduced.

<Effects of the Invention> As described above, according to the masher roll holding device of the present invention, the masher roll, the masher roll holding arm, the masher roll moving base, the masher roll lateral feed screw rod, and the fixed nut or spring or the hydraulic cylinder. The urging force of one side pushes it to one side and makes it integral, and firmly holds the masher roll against the slight vibration during high-speed passing of the strip metal plate. The burr crush mark after trimming does not become wavy and does not impair the product edge quality, and the striping speed of the side trimming line can be increased from the conventional 600 to 1200 m / min to 1500 to 1600 m / min, It can greatly contribute to the improvement of productivity.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a burr of an edge portion of a strip-shaped metal plate after side trimming, FIG. 2 is an explanatory view of an edge portion after the burr is crushed with a masher roll, and FIG. 3 is a strip-shaped metal plate with a masher roll. FIG. 4 is an explanatory view showing a crushed state of an edge portion, FIG. 4 is a side view of a conventional masher roll device (view taken along the line BB of FIG. 5), and FIG. 5 is a cross section taken along the line AA of FIG. 6 and 6 are explanatory views showing the gap G between the teeth of the screw rod for transverse feed of the masher roll and the nut of the nut, and FIG. 7 is a case where the crushed trace of the strip-shaped metal plate by the masher roll is normal and abnormal. FIG. 8 is a side view of the masher roll device showing the first embodiment of the present invention (a view taken along the line CC in FIG. 9), and FIG. 9 shows the present invention. The plan view of the masher roll device showing the first embodiment is shown in FIG. FIG. 11 is an explanatory view of a pressing force F for preventing lateral shake due to a gap between the teeth of the lateral feed screw rod of the shear roll and the screw of the nut, and FIG. 11 is a side view of the masher roll device showing the second embodiment of the present invention. (E- in FIG. 12
(E arrow view), FIG. 12 is a plan view of a masher roll device showing a second embodiment of the present invention, and FIG. 13 is a cross-sectional view of a main part F surrounded by a chain line in FIG. 12 (FIG. 14). FIG. 14 is a GG arrow view of FIG. 13. 1 ... Metal plate, 3 ... Deflector roll, 4 ... Masher roll, 5 ... Masher roll holding arm, 6 ... Movable table holding frame, 7 ... Screw rod, 8 ... Fixing nut, 9,10 ... … Movement base guide rod, 17 …… Spring, 20 …… Slide plate, 21 …… Spring.

Claims (2)

[Claims] 1. A smasher roll device which presses a masher roll having a convex crown against a strip-shaped metal plate conveyed on a deflector roll to crush the burr on the edge portion of the strip-shaped metal plate caused by side trimming. A pair of movable base holding frames, a movable base guided by two mutually parallel guide rods hung over the movable frames, one or a plurality of fixing nuts fixed to the movable base, and this fixing A screw rod which is fitted to a nut and whose both ends are supported by the rotary bearings of the pair of holding frames and is capable of forward and reverse rotation, and is fixedly connected to the movable table.
A masher roll holding device comprising a pair of masher roll holding arms, which is fixed to the moving table.
Or between the plurality of fixed nuts or between the movable table holding frame and the movable table by pressing or pulling by a biasing means such as a spring or a fluid pressure cylinder, the teeth of the male screw of the screw rod and A holding device for a masher roll for a high-speed trimming line, which prevents lateral runout of the moving table due to a gap between the teeth of the female screw of one or a plurality of fixed nuts fixedly mounted on the moving table. 2. A masher roll device facing a strip metal plate conveyed on a deflector roll, wherein a masher roll having a convex crown is pressed to crush the burr on the edge portion of the strip metal plate caused by side trimming. A pair of movable base holding frames, a movable base guided by two mutually parallel guide rods hung over the movable frames, one or a plurality of fixing nuts fixed to the movable base, and this fixing A screw rod which is fitted to a nut and whose both ends are supported by the rotary bearings of the pair of holding frames and is capable of forward and reverse rotation, and is fixedly connected to the movable table.
A masher roll holding device comprising a pair of masher roll holding arms, which is fixed to the moving table.
Or between the plurality of fixed nuts or between the movable table holding frame and the movable table by pressing or pulling by a biasing means such as a spring or a fluid pressure cylinder, the teeth of the male screw of the screw rod and A pair of masher rolls for preventing lateral displacement of the moving table due to gaps between the teeth of the female screws of one or a plurality of fixing nuts fixedly mounted on the moving table and being further connected and fixed to the moving table. A slide plate urged by a spring is interposed between the side surface of the holding arm and the side surface of the movable table to cause lateral deflection of the masher roll holding arm due to a gap between the masher roll holding arm and the movable table. A masher roll holding device for high-speed trimming lines, which is characterized by preventing