JPH0622497Y2 - Roll width adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a roll width adjusting device for adjusting a position of a forming roll incorporated in a roll shaft in a roll width direction in a cold roll forming machine.

[Prior Art] In general, cold roll forming is performed by incorporating a plurality of forming rolls into a roll shaft together with a cylindrical spacer. However, when the same forming product is different in size, for example, as shown in FIG. In the deck plate with the cross-sectional shape shown, when the height h of the peaks and the width a of the peaks are common and only the width b of the valleys is different, the same forming roll is used in accordance with the size of the formed product. It is generally practiced to adjust the movement in the direction (that is, the longitudinal direction of the roll shaft) so as to correspond.

Conventionally, in order to easily perform such roll width adjustment, as a spacer for positioning the forming roll, the cylindrical spacer that is inserted into and removed from the roll shaft in the longitudinal direction and is attached and detached is directly attached to the roll shaft from the outer periphery. Using a possible width changing spacer, when adjusting the roll width, remove the width changing spacer from the outer circumference of the roll shaft,
A method is generally adopted in which a predetermined forming roll is moved in the roll width direction, and then the width changing spacer is incorporated into the roll shaft again in such a manner that the position of the moved forming roll is exchanged.

[Problems to be Solved by the Invention] In the conventional method using the width changing spacer, the roll width changing spacer and the forming roll are loosened by loosening the roll nut that fastens and fixes the forming roll and the spacer at the end of the roll shaft. The work of replacing and is not a light work, and is complicated and time-consuming. Especially for roll width adjustment in a large roll forming machine, since the forming roll to be used is large and heavy, it is necessary to move the forming roll along the roll shaft and to move only the predetermined forming roll. The work of separating the closely attached rolls, for example, by inserting a minus driver into the closely contacted face with the rolls, etc., is not easy because the space between the roll stands is narrow and the work posture is cramped.

By the way, when there are only _two types of valley width dimension b, for example, b ₁ and b ₂ as the product size types of the deck plate shown in FIG. 10, the forming roll has two roll width adjustments corresponding to the change of the product size. Only take a position,
Even in such a case, the difficulty of the roll width adjusting operation is the same, and the fact that the roll width adjusting position is limited to only two positions does not make it particularly easy.

The present invention has been made in view of the above circumstances, and particularly, a roll width adjusting device that can easily and efficiently perform a roll width adjusting operation when the roll width adjusting position is limited to two positions. The purpose is to provide.

MEANS FOR SOLVING THE PROBLEM The present invention for solving the above-mentioned problems provides a fixed plate fixed to a roll shaft and having a predetermined width, and a fixed plate slidably attached to the fixed plate in the roll width direction. Each of which has a brim on each side of the pin, and the tip of which is connected to the side surface of the forming roll, and which is parallel to the roll shaft, and one brim of the connecting bar, which is in contact with the fixing plate. A roll width adjusting device comprising a bar fixing member fitted into a gap between the fixing plate and the fixing plate.

According to a second aspect of the present invention, the bar fixing member according to the first aspect is rotatably fitted to the roll shaft and is continuous with the circumferential elongated hole through which the connecting bar can be inserted, and the circumferential elongated hole. The connecting bar has an opening for a collar through which the collar can be inserted, and a taper inclined in the circumferential direction is provided in the vicinity of the circumferential elongated hole.

[Operation] In the above configuration, the connecting bar that is slidably attached to the fixing plate in the roll width direction is fixed in such a manner that one of the collars sandwiching the fixing plate of the connecting bar is fixed by sliding the connecting bar in the roll width direction. It can be easily positioned in two positions, one for hitting the plate and the other for hitting the fixed plate. Therefore, the forming roll which moves along the roll shaft integrally with the connecting bar is easily positioned at the two roll width adjusting positions corresponding to the two positions of the connecting bar.

Then, the connecting bar is fixed to the fixing plate by fitting the bar fixing member into the gap between the fixing plate and the flange on the opposite side of the connecting bar to the fixing plate.

As described above, the roll width adjustment of the forming roll having only two positions can be easily performed only by moving the connecting bar and operating the bar fixing member.

According to the invention of claim 2, the connecting bar can be fixed to the fixing plate only by rotating the bar fixing member, and the work of adjusting the roll width becomes extremely easy.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 9.

In FIGS. 1 and 2, reference numeral 1 is a roll shaft of a cold roll forming machine, and reference numeral 2 is a forming roll (however, one shown in the drawing is one of a plurality of forming rolls) for bending and forming a metal plate material. . The forming roll 2 is assumed to have only two positions in the roll width direction in response to the product size change. Both ends of the roll shaft 1 are rotatably supported by left and right chocks (bearing boxes) provided on a roll stand (not shown), and one end side of the roll shaft 1 is connected to a drive device via a transmission mechanism to be rotationally driven.

A sleeve 3, a disc-shaped fixing plate 4 having a predetermined thickness, and a sleeve 5 are fitted on the roll shaft 1 with a key 6 interposed therebetween, and the fixing plate 4 is formed by the sleeves 3 and 5 on both sides in the roll width direction ( It is fixed to the roll shaft 1 so as not to move in the left-right direction in FIG. 1, that is, the longitudinal direction of the roll shaft 1.

The forming roll 2 is fitted on the sleeve 3 with a key 7 interposed, and is slidable in the roll width direction.

Connection bars 8 having a circular cross section are attached to the fixing plate 4 at two locations facing each other in the 180 ° direction so as to be slidable in the roll width direction. As shown in detail in FIGS. 3 to 5, the connecting bar 8 is slidably fitted in the shaft hole 4a formed in the fixed plate 4, and has a brim 8a on both sides sandwiching the fixed plate 4, respectively. 8b, and a rack 8c is formed on the upper surface portion between the two collars 8a and 8b. Also,
A part of the fixed plate 4 is cut out, and the shaft support portions 4b are formed on both sides of the cutout portion 4d in the thickness direction of the fixed plate 4, and the portion between the two shaft support portions 4b of the shaft hole 4a is opened upward. The upper surface of the connecting bar 8, that is, the portion of the rack 8c is exposed to the outside of the shaft hole 4a. The connecting bar 8 slides along the shaft hole 4a on the outer peripheral surface of the cylinder, and the portion of the rack 8c is formed smaller than the outer diameter of the cylinder of the connecting bar 8 to form the shaft hole 4a.
It does not interfere with the inner surface of the.

A pinion 9 that engages with a rack 8c of the connecting bar 8 is fixed to a shaft 10, and the shaft 10 has a cutout portion 4 of a fixing plate 4.
It is rotatably supported by a split bearing 12 fixed to the d by a bolt 11.

Further, ring-shaped bar fixing members 13 and 14 for fixing the connecting bar 8 to the fixing plate 4 are rotatably fitted on the sleeve 3 or 5, respectively, on both sides of the fixing plate 4. There is. As shown in FIG. 6, the bar fixing members 13 and 14 are substantially disc-shaped, and have circumferential slots 13a and 14a through which the connecting bar 8 can be inserted and the circumferential slots 13a and 14a. The brim openings 13b, 1 for the brim 8a, 8b of the connecting bar 8 which are continuous with
As shown in FIG. 7, a taper having an angle of, for example, about 2 ° is provided in the vicinity of the circumferential elongated holes 13a and 14a. The range of this taper is shown by an arc-shaped arrow (a) in FIG.

The width l of the fixing plate and the two flanges 8a of the connecting bar 8,
The relationship with the distance m between 8b (see FIG. 3) is m−1 = when the roll width adjustment amount of the forming roll 2 (that is, the distance to move the forming roll 2 when adjusting the roll width) is n.
n, and the bar fixing member 1
The thickness of the taper portion in 3 and 14 is the above-mentioned dimension n (= m
-L) is included. Although not shown in the drawings, radial protrusions may be provided as handles at a plurality of locations on the outer circumference of the bar fixing members 13 and 14 so that the bar fixing members 13 and 14 can be easily rotated.

The tip of the connecting bar 8 is fixed to the side surface of the forming roll 2 with a bolt 15.

Next, the roll width adjusting work by the roll width adjusting device having the above configuration will be described.

FIG. 1 shows a state in which the forming roll 2 is set at a first position for roll width adjustment, that is, a left side position in FIG. An operation for setting the forming roll 2 at the first position will be described.

When the roll width is adjusted, the bar fixing members 13 and 14 are rotated so that the collar opening 1 is formed as shown in FIG.
The connecting bar 8 is located at 3b and 14b. As a result, the collars 8a and 8b of the connecting bar 8 have the collar openings 1
It is possible to enter the inside of 3b and 14b, and it is possible to move the connecting bar 8 in the roll width direction. In this state, the shaft 10 of the pinion 9 is rotated to rotate the pinion 9, and the rack 8c meshing with the pinion 9 is driven,
The connecting bar 8 is moved to the left in FIG. 1 until the flange 8b on the right side in FIG. 1 enters the flange opening 14b of the bar fixing member 14 and hits the side surface of the fixing plate 4.

Next, when the bar fixing member 13 on the forming roll 2 side is rotated clockwise in FIG. 8, the connecting bar 8 is relatively moved.
Enters into the circumferential elongated hole 13a of the bar fixing member 13.
At this time, since the peripheral portion of the bar fixing member 13 is tapered in the circumferential direction, the bar fixing member 13 is tightly fitted in the gap between the collar 8a and the fixing plate 4 due to the wedge effect. Mating. In this way, the connecting bar 8 is fixed to the fixing plate 4 by the bar fixing member 13 at a position closer to the left side in FIG. 1, and the forming roll 2 moves to the first position at the roll width adjusting position.
It has been set to the position. The circumferential elongated holes 13a and 14a of the bar fixing members 13 and 14 are formed so that their inner sides (opposite sides of the brim openings 13b and 14b) are in the same direction as the direction of rotation of the forming roll 2. And
Therefore, as the forming roll 2 rotates, the bar fixing members 13 and 14 act so as to fit more tightly between the fixing plate 14 and the collar 8a or 8b.
There is no danger that 3 will come off.

Next, the operation for adjusting the roll width by moving the molding roll 2 rightward in FIG. 1 by the dimension n (= ml) from the state shown in FIG. 1 will be described.

The bar fixing member 13 is rotated counterclockwise in FIG. 6 to move the connecting bar 8 to the brim opening 13 as shown in FIG.
Position b. This allows the brim 8a of the connecting bar 8 to enter the brim opening 13b.
Can be moved in the roll width direction. Then pinion 9
When the rack 8c that engages with the pinion 9 is driven by rotating the shaft 10 and the connecting bar 8 is moved to the right in FIG. 1, the forming roll 2 moves integrally with the connecting bar 8. When the collar 8a of the connecting bar 8 on the side of the forming roll 2 enters into the collar opening 13b of the bar fixing member 13 and hits the side surface of the fixing plate 4, the collar 8b on the opposite side is measured from the side surface of the fixing plate 4. n apart. Here, when the bar fixing member 14 is rotated, the connecting bar 8 is inserted into the circumferential elongated hole 14a, and the bar fixing member 14 is inserted into the gap between the flange 8b of the connecting bar 8 and the fixing plate 4 as described above. The fitting is tight, and as a result, as shown in FIG. 9, the connecting bar 8 is fixed to the fixing plate 4 in a state of being shifted to the right side. In this way, the forming roll 2 is set to the second position for roll width adjustment.

The operation of driving the connecting bar 8 by the pinion 9 in the roll width adjusting work may be performed simultaneously or alternately little by little between the two connecting bars 8 in the 180 ° direction.
As a result, the forming roll 2 slides smoothly on the sleeve 3.

Regarding the connecting bar driving means for driving the connecting bar 8 in the roll width direction, in the embodiment, the rack 8c and the pinion 9 are used.
Although the driving operation of the connecting bar 8 can be easily performed as a mechanism according to the above, another driving mechanism can be adopted, and a special driving mechanism is provided when the roll is lightweight and can be manually operated. You don't have to.

Further, in the embodiment, the circumferential elongated hole 1 is used as the bar fixing member.
Although the structure having the openings 3a and 14a and the brim openings 13b and 14b is adopted, the structure is not necessarily limited to such a structure. In short, any material can be used as long as it can be tightly fitted between the collar 8a or 8b of the connecting bar 8 and the fixing plate 4. However, according to the bar fixing members 13 and 14 of the embodiment, since the connecting bar 8 is fixed to the fixing plate 4 simply by rotating, the operation is extremely simple.

[Effects of the Invention] Since the present invention is configured as described above, it has the following effects.

When the size of the molded product can be changed at two roll width adjustment positions, the roll width adjustment at those two positions is performed by moving the connecting bar and fixing the collar on the opposite side to the collar applied to the fixing plate. Since it can be performed by only two operations, that is, the operation of fitting the bar fixing member in the gap between the plate and the plate, the roll width adjustment work becomes extremely easy and can be performed in a short time.

According to the second aspect, since the connecting bar can be fixed to the fixing plate only by the operation of rotating the bar fixing member, the roll width adjusting work becomes easier and more efficient.

[Brief description of drawings]

FIG. 1 is a front view of a half section of a roll width adjusting device showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. Is an enlarged front view, FIG. 4 is a plan view of the same, FIG. 5 is a sectional view taken along line VV of FIG. 3, and FIG. 6 is a view for explaining an engagement state between a connecting bar and a fixing plate. VI-VI sectional view taken along the line VI-VI in FIG.
The figure shows the VII arrow view of only the bar fixing member in FIG.
FIG. 8 is an explanatory view of a disengaged state of the connecting bar and the fixed plate,
FIG. 9 is a view showing a state in which the roll width is adjusted by moving the forming roll to the right in FIG. 1, and FIG. 10 is a sectional view of an example of a molded product to which the roll width adjusting device of the present invention is applied. DESCRIPTION OF SYMBOLS 1 ... Roll shaft, 2 ... Forming roll, 3, 5 ... Sleeve, 4 ... Fixing plate, 4a ... Shaft hole, 8 ... Connection bar, 8a, 8b ... Collar, 8c ... Rack, 9 ... Pinion (connection bar drive means) , 13, 14 ... Bar fixing member, 13a, 14a ... Circumferential slot, 13b, 14b ... Collar opening,

Claims (4)

[Scope of utility model registration request] 1. A fixing plate fixed to a roll shaft, a fixing plate slidably attached to the fixing plate in the roll width direction, each having a collar on each side of the fixing plate, and a tip of a forming roll. A connecting bar that is connected to the side surface and is parallel to the roll shaft; and a bar fixing member that fits in the gap between the other brim and the fixing plate with one brim of the connecting bar applied to the fixing plate. A roll width adjusting device characterized by being provided. 2. The bar fixing member is rotatably fitted to a roll shaft, and has a circumferential elongated hole through which the connecting bar can be inserted, and a collar of the connecting bar continuous with the circumferential elongated hole. 2. The roll width adjusting device according to claim 1, wherein the roll width adjusting device has an opening for a collar through which is inserted, and a portion in the vicinity of the circumferential elongated hole is tapered so as to be inclined in the circumferential direction. 3. The roll width adjusting device according to claim 1, wherein the fixing plate is provided with connecting bar driving means for driving the connecting bar in the roll width direction. 4. The connecting bar driving means comprises a rack formed on the connecting bar, and a pinion that engages with the rack of the connecting bar is provided on a fixed plate.
Roll width adjusting device described.