JP6907905B2 - Roll forming equipment - Google Patents

Description

The present invention relates to a roll molding apparatus.

The solid polymer type fuel cell is provided with a separator for forming a flow path for a fuel gas (for example, hydrogen gas) and a separator for forming a flow path for an oxidant gas (for example, air) inside. There is. Since these separators require high conductivity and rigidity, they are formed by using a plate material made of metal (for example, titanium). The separator has irregularities on its surface.

Conventionally, a roll molding apparatus used for molding such a separator has been proposed (for example, Patent Document 1). FIG. 7 shows an example of a roll forming apparatus. As shown in FIG. 7, the roll forming apparatus has a pair of processing rolls 100, 110 which are rotatably arranged at intervals. A part of the outer peripheral surfaces of the processing rolls 100 and 110 is a forming blade over the entire circumference, and the outer peripheral surfaces are arranged so as to face each other. Further, the roll forming apparatus has an electric motor 120 that is connected to one of the processing rolls 100 and for rotationally driving the processing roll 100. Further, one machining roll 100 is integrally provided with a driving gear 130, and the other machining roll 110 is integrally provided with a driven gear 140, and the driving gear 130 and the driven gear 140 are meshed with each other.

When forming the separator by the roll forming apparatus, the processing roll 100 is rotationally driven through the operation of the electric motor 120, and the processing roll 110 is rotated through the engagement between the main gear 130 and the driven gear 140. In that state, as shown in FIG. 8, by passing the work W made of the plate material between the processing rolls 100 and 110, the uneven pattern on the surface of the forming blades of the processing rolls 100 and 110 is transferred to the work W. ..

Japanese Unexamined Patent Publication No. 2016-7637

In the roll molding apparatus, it is conceivable that the pre-adjustment of the apparatus before the start of molding of the separator is performed as follows.
First, the work W is passed between the processing rolls 100 and 110 in a state where one processing roll 100 and the other processing roll 110 are separated from each other. After that, one processing roll 110 is moved while applying pressure so as to approach the other processing roll 100, and the electric motor 120 is operated to rotate each processing roll 100, 110. As a result, with the work W sandwiched between the machining rolls 100 and 110, the machining rolls 100 and 110 are brought closer to each other while suppressing the sudden increase in the load applied to the forming blades of the machining rolls 100 and 110. It becomes possible to move until the interval is reached.

However, as shown in FIGS. 9 (a) and 9 (b), when the roll forming apparatus is preliminarily adjusted, only the amount by which the processing rolls 100 and 110 are separated (the amount indicated by G0 in FIG. 9) is used. Since the engagement between the main gear 130 and the driven gear 140 becomes shallow, when the machining rolls 100 and 110 are rotated, the rotation phases of the machining rolls 100 and 110 are likely to shift.

As shown in FIGS. 10 (a) and 10 (b), when the rotation phases of the processing rolls 100 and 110 are deviated, the relative rotation phases of the surfaces of the forming blades 100A and 110A (for example, one forming blade 100A). The relative rotation phase of the convex portion of the above and the concave portion of the other molding blade 110A) is deviated. Therefore, a portion where the gap between the surfaces of the forming blades 100A and 110A is narrow (gap G1 in FIG. 10B) and a portion where the gap is wide (gap G2 in FIG. 10B) are formed. In this case, in a portion where the gap between the surfaces of the forming blades 100A and 110A is narrow, the load applied to the surfaces of the forming blades 100A and 110A becomes unnecessarily large, so that the durability of the forming blades 100A and 110A is increased. There is a risk of performance degradation.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a roll forming apparatus capable of suppressing a decrease in durability of a forming blade due to a shift in the relative rotation phase of a processing roll at the time of pre-adjustment. To provide.

The roll forming apparatus for solving the above problems is one of a pair of processing rolls arranged so that the outer peripheral surfaces face each other and a part of the outer peripheral surfaces forms a forming blade, and one of the pair of processing rolls. A driving gear integrated with a machining roll, a driven gear integrally with the other machining roll of the pair of machining rolls and meshing with the driving gear, and a driven gear connected to the one machining roll to rotationally drive the machining roll. With a drive source, the pair of machining rolls are rotated in a state where the pair of machining rolls are rotated through the rotational drive of the one machining roll by the drive source and the engagement of the main gear and the driven gear. The work is processed and molded by passing a work between them, and the pre-adjustment prior to the processing and molding passes the work between the pair of processing rolls in a state where the gap is widened, and then the gap is formed. A roll forming apparatus that rotates the pair of machining rolls while moving at least one of the pair of machining rolls so as to make the pair of machining rolls narrower, so as to project in an annular shape over the entire circumference of the machining rolls. In addition, each of the pair of processing rolls has a guide plate integrally provided, and the guide plate of the other processing roll is rotated by the rotational force of the guide plate of the one processing roll. The side surfaces of the guide plates are slid so as to face each other in the direction in which the rotation axes of the pair of processing rolls extend.

In the above configuration, basically, the main gear integrated with one (first processing roll) of the pair of processing rolls and the driven gear integrated with the other (second processing roll) are meshed with each other to rotate by the drive source. The rotational force of the driven first machining roll is transmitted to the second machining roll, and the machining rolls rotate.

In the roll forming apparatus of the comparative example in which the rotational force is transmitted from the first machining roll to the second machining roll only by the meshing of the gears, the meshing between the main gear and the driven gear becomes shallow at the time of pre-adjustment, and the gears When the gap becomes large, the rotation phase of the driven gear (second processing roll) tends to be delayed with respect to the rotation phase of the main gear (first processing roll).

In this regard, in the above configuration, in addition to the transmission of the rotational force from the first machining roll to the second machining roll by the meshing of the main gear and the driven gear, the guide plate integrated with the first machining roll is used. It is also performed by sliding (interlocking) with a guide plate integrated with the second processing roll. Therefore, when the main gear integrated with the first processing roll and the driven gear integrated with the second processing roll become shallowly meshed during the pre-adjustment of the roll forming apparatus, the rotational force of each guide plate is applied to the first processing roll. Can be used as a member for transmitting the above to the second processing roll. As a result, it is possible to prevent the rotation phase of the second processing roll (main gear) from being delayed so as to be delayed with respect to the rotation phase of the first processing roll (main gear) as compared with the roll forming apparatus without the guide plate. be able to. Therefore, it is possible to suppress the deterioration of the durability performance of the forming blade due to the deviation of the relative rotation phase of the machining roll at the time of pre-adjustment.

In the roll forming apparatus, two guide plates are provided on each of the pair of processing rolls so as to be arranged at intervals in the extending direction of the rotation axis, and the pair of processing rolls are provided. It is preferable that the two guide plates integrated with one of the processing rolls are sandwiched between the two guide plates integrated with the other.

In the above configuration, in order to realize the molding of the workpiece with high accuracy, the relative position between the forming blade of the first processing roll and the forming blade of the second processing roll in the direction in which the rotation axis extends must be accurately determined. However, the work of determining this relative position tends to be complicated. According to the above configuration, both processing rolls are arranged so as to sandwich the two guide plates provided on one processing roll between the two guide plates provided on the other processing roll. The position can be determined accurately.

In the roll forming apparatus, a part of the facing surfaces of the guide plate integrated with the one processing roll and the guide plate integrated with the other processing roll is directed toward the tip of the guide plate. It is preferable to form a tapered shape in which the gap between the facing surfaces is widened.

According to the above configuration, the work of arranging both processing rolls so as to sandwich the two guide plates provided on one processing roll between the two guide plates provided on the other processing roll is performed on the guide plate in a tapered shape. It can be done smoothly while guiding by the part of.

In the roll forming apparatus, the processing roll has a roll blade and a guide plate whose outer peripheral surface is fitted on the same rotating shaft as the rotating shaft and whose outer peripheral surface forms the forming blade, and the rotating shaft and the roll blade. It is preferable that the structure is such that the guide plate and the guide plate can be assembled and disassembled.

According to the above configuration, by replacing the roll blade of each processing roll, it is possible to mold a molded product having a different surface uneven pattern or a molded product having a different size by the same apparatus. Moreover, when attaching such a processing roll to the apparatus, it is possible to easily perform the work of adjusting the relative position in the direction in which the rotation axis of each processing roll extends by using the guide plate.

In the roll forming apparatus, the outer diameter of the forming blade of the one processing roll and the outer diameter of the forming blade of the other processing roll are the same, and the guide plate of the one processing roll and the other of the other. It is preferable that the movement loci of the portion of the processing roll where the guide plate slides have the same shape in the guide plates.

In the above configuration, in order to suppress the deviation of the relative rotation phases of the pair of processing rolls at the time of pre-adjustment, the rotation speeds of the pair of processing rolls may be the same. According to the above configuration, guide plates having the same movement locus of the sliding portions are provided on each processing roll, and the guide plates slide (interlock), so that the rotation speed of the pair of processing rolls can be increased. It will be possible to make them the same. Therefore, the deviation of the relative rotation phase of each processing roll at the time of pre-adjustment can be suppressed by a simple structure.

According to the roll forming apparatus of the present invention, it is possible to suppress deterioration of the durability performance of the forming blade due to the deviation of the relative rotation phase of the processing roll at the time of pre-adjustment.

The front view of the roll forming apparatus of one Embodiment. The schematic which shows the arrangement mode of a processing roll and an auxiliary roll. Exploded view of each processing roll. (A) is a schematic diagram showing the positional relationship between the main gear and the driven gear at the start of pre-adjustment, and (b) is a schematic diagram showing the positional relationship between the main gear and the driven gear at the time of forming the workpiece, and (c). ) Is a schematic diagram showing an example of the positional relationship of each guide plate. An enlarged cross-sectional view of the facing portion of each roll blade at the time of pre-adjustment. An enlarged cross-sectional view of the contact portion of the guide plate. Front view of a conventional roll forming apparatus. Explanatory drawing of the molding mode of a work. (A) of the conventional roll forming apparatus is a schematic diagram showing the positional relationship between the main gear and the driven gear at the start of pre-adjustment, and (b) is a schematic diagram showing the positional relationship between the main gear and the driven gear during pre-adjustment. .. (A) of the conventional roll forming apparatus is an enlarged cross-sectional view of the facing portion of each molding blade at the start of pre-adjustment, and (b) is an enlarged cross-sectional view of the facing portion of each molding blade during pre-adjustment.

Hereinafter, an embodiment of the roll forming apparatus will be described.
As shown in FIG. 1, the roll forming apparatus 10 has a base 11 and a pair of support columns 12 erected on the base 11. The support columns 12 extend in the vertical direction (vertical direction in FIG. 1) and are arranged at intervals in the horizontal direction (horizontal direction in FIG. 1).

A first processing roll 13 and a second processing roll 14 are erected between the pair of support columns 12. Each of these processing rolls 13 and 14 is rotatably supported by a support column 12 via a bearing so as to extend in parallel at intervals in the vertical direction. The processing rolls 13 and 14 extend in the horizontal direction and are arranged so that the outer peripheral surfaces face each other. A part of the outer peripheral surfaces of the processing rolls 13 and 14 (specifically, the central portion in the direction in which the rotation axis extends [hereinafter, the rotation axis direction]) is the forming blade 15.

A driving gear 16 is integrally provided at the base end of the first machining roll 13, and a driven gear 17 is integrally provided at the base end of the second machining roll 14, and the driving gear 16 and the driven gear 17 are meshed with each other. ing. Further, the output shaft of the electric motor 18 as a drive source is connected to the base end of the first processing roll 13. In the present embodiment, the first machining roll 13 and the second machining roll 14 are moved in opposite directions at the same speed through the rotational drive of the first machining roll 13 by the operation of the electric motor 18 and the engagement of the main gear 16 and the driven gear 17. It is possible to rotate it.

Further, a first auxiliary roll 19 and a second auxiliary roll 20 are provided between the pair of support columns 12. The auxiliary rolls 19 and 20 are arranged so as to be arranged at intervals from the processing rolls 13 and 14 at positions sandwiching the processing rolls 13 and 14. Each of the auxiliary rolls 19 and 20 has a substantially circular cross section and extends in the horizontal direction, and is supported so as to be rotatable and vertically movable with respect to the support column 12.

As shown in FIG. 2, the first auxiliary roll 19 is arranged below the processing rolls 13 and 14, and the second auxiliary roll 20 is arranged above the processing rolls 13 and 14. Further, on the straight line L connecting the rotation shaft C3 of the first processing roll 13 and the rotation shaft C2 of the second processing roll 14, the rotation shaft C4 of the first auxiliary roll 19 and the rotation shaft C1 of the second auxiliary roll 20 are arranged. The auxiliary rolls 19 and 20 are arranged so as to be arranged respectively.

As shown in FIG. 1, the roll forming apparatus 10 is an actuator for pressing the first auxiliary roll 19 upward, a first cylinder 19A, and an actuator for pressing the second auxiliary roll 20 downward. It has two cylinders 20A. In the roll forming apparatus 10, by operating the first cylinder 19A, the first processing roll 13 can be pressed upward by the outer surface of the first auxiliary roll 19 with a predetermined pressure, and the second cylinder. By operating 20A, it is possible to press the second processing roll 14 downward with a predetermined pressure by the outer surface of the second auxiliary roll 20.

Each support pillar 12 has a fixed pillar 12A fixed to the base 11 and extending in the vertical direction, and a moving portion 12B provided on the upper portion of the fixed pillar 12A so as to be movable in the vertical direction. In the present embodiment, the first processing roll 13 and the first auxiliary roll 19 are provided between the fixed columns 12A of the support columns 12, and the second processing roll 14 and the second auxiliary roll 20 are provided on the support columns 12. It is provided between the moving portions 12B. Then, in the present embodiment, the vertical positions of the moving portion 12B (second processing roll 14 and second auxiliary roll 20) can be changed through the operation control of the actuator (not shown) connected to the moving portion 12B. There is. Specifically, the moving portion 12B is moved to a molding position suitable for molding by the roll molding apparatus 10, or a pre-adjustment position suitable for pre-adjustment of the roll molding apparatus 10 (specifically, above the molding position). It is possible to move it to the side position).

The roll molding apparatus 10 of the present embodiment is used for molding a separator of a fuel cell.
In the molding of the separator by the roll forming apparatus 10, the moving portion 12B is set to the forming position and the processing rolls 13 and 14 are rotated, and then the workpiece made of a metal (for example, titanium) plate is placed in the first processing roll. The work is processed and formed by passing it between the forming blade 15 of the 13 and the forming blade 15 of the second processing roll 14. At this time, the uneven pattern on the surface of the forming blade 15 of each of the processing rolls 13 and 14 is transferred to the work.

Further, the pre-adjustment prior to molding the separator by the roll molding apparatus 10 is performed as follows. First, the moving position of the moving portion 12B (second machining roll 14) is set to the pre-adjustment position, and the gap between the machining rolls 13 and 14 (each forming blade 15) is widened. In this state, the work is passed between the processing rolls 13 and 14, and the moving portion 12B (second processing roll 14) is gradually moved to the molding position while rotating the processing rolls 13 and 14.

Hereinafter, the specific structures of the first processing roll 13 and the second processing roll 14 will be described.
Since the components of the first processing roll 13 and the components of the second processing roll 14 have the same basic structure, the components will be described below with the same reference numerals.

As shown in FIGS. 1 and 3, each of the processing rolls 13 and 14 has a rotating shaft 31. The rotating shaft 31 is integrally formed with a round bar portion 31A extending in a circular cross section and a rib 31B having a shape (large diameter) larger than that of the round bar portion 31A.

Each of the processing rolls 13 and 14 has a tubular roll blade 32 having the forming blade 15 formed on the outer peripheral surface thereof. The roll blade 32 has a plurality of disc-shaped thin plates (for example, about 0.1 mm in thickness) having irregularities (molding blades) formed on the outer peripheral surface, with the thickness adjusted one by one (for example, 1000 blades). It is made by stacking. In this embodiment, the outer diameter of the roll blade 32 of the first processing roll 13 and the outer diameter of the roll blade 32 of the second processing roll 14 are the same. Further, in the present embodiment, the surface concave portion of one of the processing rolls 13 and 14 and the surface convex portion of the other roll blade 32 face each other at a predetermined interval. The surface shape is determined, and the roll blades 32 are arranged.

Each of the processing rolls 13 and 14 has two support plates 33 integrally provided on each of the processing rolls 13 and 14 so as to project in an annular shape over the entire circumference thereof. Each support plate 33 is formed in a disk shape having a diameter larger than that of the roll blade 32, and is fixed to the rotating shaft 31 at a position sandwiching the roll blade 32 in the rotation axis direction (left-right direction in FIG. 3). There is. Then, in the roll forming apparatus 10 (FIG. 1), the outer peripheral surface of each support plate 33 of the first processing roll 13 and the outer peripheral surface of the first auxiliary roll 19 come into contact with each other, and each support plate 33 of the second processing roll 14 comes into contact with each other. The outer peripheral surface of the second auxiliary roll 20 is in contact with the outer peripheral surface of the second auxiliary roll 20. In this embodiment, the support plates 33 of the first processing roll 13 and the support plates 33 of the second processing roll 14 are arranged at intervals in the rotation axis direction so as not to come into contact with each other.

In this embodiment, it may be necessary to replace the auxiliary rolls 19 and 20 and the support plate 33 due to wear due to use. In that case, it is more cost effective to replace the support plate 33 than to replace the auxiliary rolls 19 and 20. Therefore, it is desirable that the auxiliary rolls 19 and 20 are not worn so much, and the support plate 33 is worn more. Based on this, in the present embodiment, each support plate 33 is formed of a material having low wear resistance (for example, carbon steel [S45C]). Further, in the present embodiment, since the outer peripheral surface of the support plate 33 is pressed by the outer peripheral surfaces of the auxiliary rolls 19 and 20, it is desirable that the support plate 33 has high rigidity. Therefore, each support plate 33 is formed in a shape having a relatively thick thickness (for example, 20 mm) in the rotation axis direction.

Each of the processing rolls 13 and 14 has two guide plates 34 integrally provided on each of the processing rolls 13 and 14 so as to project in an annular shape over the entire circumference thereof. Each guide plate 34 is formed in the shape of a disk having a shape (small diameter) larger than that of the roll blade 32 and smaller in outer diameter than the support plate 33, and the roll blade 32 and two support plates are formed in the rotation axis direction. It is fixed to the rotating shaft 31 at a position where 33 is sandwiched between them. The guide plates 34 are positioned at positions spaced apart from the support plates 33 in the rotation axis direction so that the outer peripheral surfaces thereof do not contact the outer peripheral surfaces of the auxiliary rolls 19 and 20 and do not contact the support plates 33. It is provided.

Further, each guide plate 34 is provided on each of the processing rolls 13 and 14 so that the two guide plates 34 of the first processing roll 13 sandwich the two guide plates 34 of the second processing roll 14. .. As a result, the side surface of the guide plate 34 of the first processing roll 13 and the side surface of the guide plate 34 of the second processing roll 14 are pressed against each other in the direction of the rotation axis and are in contact with each other. Therefore, in the present embodiment, when the first machining roll 13 is rotationally driven by the operation of the electric motor 18 (FIG. 1), the guide plate of the second machining roll 14 is driven by the rotational force of the guide plate 34 of the first machining roll 13. In a mode in which the 34 is rotated (interlocked), the side surfaces of the guide plates 34 of the processing rolls 13 and 14 are slid so as to face each other in the rotation axis direction.

In this embodiment, the guide plates 34 of the processing rolls 13 and 14 are provided with the same shape (disk shape). Therefore, when the side surfaces of the guide plates 34 slide with each other during the rotation of the processing rolls 13 and 14, the movement locus of the sliding portion on the guide plate 34 of the first processing roll 13 (T1 in FIG. 4C). The movement locus of the sliding portion on the guide plate 34 of the second processing roll 14 (shown by T2 in FIG. 4C) has the same shape (annular shape).

In the present embodiment, each guide plate 34 has a function of transmitting a rotational force through sliding with each other and a function of determining the relative positions of the processing rolls 13 and 14 in the rotation axis direction through contact with each other. In order to maintain these functions for a long period of time, it is preferable that each guide plate 34 is not easily worn. Based on this point, in the present embodiment, each guide plate 34 is formed of a material having higher wear resistance than the material for forming the support plate 33 (for example, alloy tool steel [SKD]). Further, in the present embodiment, since the side surfaces of the guide plates 34 are slid so as to face each other in the rotation axis direction, the thickness required for each guide plate 34 is determined by the auxiliary rolls 19 and 20 on the outer peripheral surfaces. It can be said that the thickness is thinner than the thickness required for each support plate 33 having a structure to be pressed. Therefore, in the present embodiment, each guide plate 34 is formed so that the thickness (for example, 10 mm) in the rotation axis direction is relatively thin with the thickness of the support plate 33.

Each of the processing rolls 13 and 14 has a plurality of collars 35 (FIG. 3). These collars 35 are formed in a disk shape or a cylindrical shape having a through hole in the center, and are provided on the rotating shaft 31 with the rotating shaft 31 inserted in the through hole. Each collar 35 has a function of adjusting the positions of the roll blade 32, the support plate 33, and the guide plate 34 with respect to the rotating shaft 31 in the rotation axis direction (left-right direction in FIG. 3). The shape of each collar 35 (specifically, the thickness in the rotation axis direction) is separately determined so that the fixed positions of the roll blade 32, the support plate 33, and the guide plate 34 with respect to the rotation shaft 31 are the above-mentioned positions. ing.

Further, each of the processing rolls 13 and 14 has a nut 36. The nut 36 is arranged so as to sandwich the roll blade 32, the two support plates 33, the two guide plates 34, and the plurality of collars 35 with the rib 31B of the rotary shaft 31, and is a male screw on the outer surface of the rotary shaft 31. It is screwed into (not shown). The roll forming apparatus 10 has a structure in which the processing rolls 13 and 14 can be assembled and disassembled through the attachment / detachment of the nut 36.

When assembling the processing rolls 13 and 14, first, the roll blade 32, the two support plates 33, the two guide plates 34, and the plurality of collars 35 are inserted into the round bar portion 31A of the rotary shaft 31. Then, in that state, the nut 36 is attached to the rotating shaft 31. As a result, the roll blade 32, the two support plates 33, the two guide plates 34, and the plurality of collars 35 are sandwiched between the ribs 31B and the nuts 36, and are fixed to the rotating shaft 31 (FIG. FIG. The state shown in 1) is reached.

On the other hand, when the processing rolls 13 and 14 are disassembled, the nut 36 is loosened and removed from the rotating shaft 31 together with the roll blade 32, the two support plates 33, the two guide plates 34, and the plurality of collars 35. As a result, the roll blade 32, the two support plates 33, the two guide plates 34, and the plurality of collars 35 are removed from the round bar portion 31A of the rotary shaft 31 (the state shown in FIG. 3).

Hereinafter, the action and effect of the roll forming apparatus 10 will be described.
FIG. 4A schematically shows the positional relationship between the main gear 16 and the driven gear 17 at the start of pre-adjustment of the roll forming apparatus 10, and FIG. 4B shows the main movement at the time of forming the separator by the roll forming apparatus 10. The positional relationship between the gear 16 and the driven gear 17 is schematically shown, and FIG. 4C shows an example of the positional relationship of each guide plate 34.

As shown in FIGS. 4A and 4B, in the roll forming apparatus 10, basically, the main gear 16 integrated with the first processing roll 13 and the driven gear 17 integrated with the second processing roll 14 The rotational force of the first machining roll 13 rotationally driven by the electric motor 18 (see FIG. 1) is transmitted to the second machining roll 14 through the meshing with the first machining roll 13. Then, as a result, the processing rolls 13 and 14 are rotated.

Here, if the rotational force is transmitted from the first processing roll 13 to the second processing roll 14 only by the engagement between the main gear 16 and the driven gear 17, the following inconvenience occurs. That is, when the engagement between the main gear 16 and the driven gear 17 becomes shallow during the pre-adjustment of the roll forming apparatus, the gap between the gears 16 and 17 becomes large, and the main gear 16 (first processing roll 13) ), The rotation phase of the driven gear 17 (second processing roll 14) tends to be delayed in the direction of delay. If the rotation phases of the processing rolls 13 and 14 (specifically, the forming blade 15) deviate from each other, an unnecessarily large load is applied to the forming blade 15 during the forming process of the workpiece. Therefore, the durability performance of the forming blade 15 is increased. Will lead to a decrease in.

In this respect, in the roll forming apparatus 10 of the present embodiment, in addition to the transmission of the rotational force from the first processing roll 13 to the second processing roll 14 by the meshing of the main gear 16 and the driven gear 17. As shown in FIG. 4C, each guide plate 34 is interlocked by sliding the guide plate 34 of the first processing roll 13 and the guide plate 34 of the second processing roll 14. Therefore, when the main gear 16 of the first machining roll 13 and the driven gear 17 of the second machining roll 14 become shallowly meshed (the state shown in FIG. 4A) during the pre-adjustment of the roll forming apparatus 10, when the engagement is shallow (the state shown in FIG. 4A). Each guide plate 34 can be used as a member for transmitting the rotational force of the first processing roll 13 to the second processing roll 14.

As a result, as shown in FIG. 4A as an example, in the process of executing the pre-adjustment of the roll forming apparatus 10, the tooth surface of the main gear 16 and the tooth surface of the driven gear 17 are separated from each other, but these gears are separated from each other. The processing rolls 13 and 14 can be rotated (interlocked) through the sliding of the guide plates 34 (FIG. 4 (c)) without the meshing of the 16 and 17. Therefore, it is possible to prevent the rotation phase of the second processing roll 14 (driven gear 17) from being delayed so as to be delayed with respect to the rotation phase of the first processing roll 13 (main gear 16).

Therefore, as shown in FIG. 5, the relative rotation phases of each part of the surface of the roll blade 32 (specifically, the forming blade 15) of each of the processing rolls 13 and 14 (for example, the surface recess of one forming blade 15 and the other forming blade). The deviation of the relative rotation phase with the surface convex portion of 15) can be suppressed. As a result, it becomes difficult to form a portion where the gap between the surfaces of the forming blade 15 (indicated by GP in the drawing) is narrow, that is, a portion where the load applied to the surface of the forming blade 15 becomes unnecessarily large. It is possible to suppress the deterioration of performance.

As described above, according to the present embodiment, it is possible to suppress the deterioration of the durability performance of the forming blade 15 due to the deviation of the relative rotation phases of the processing rolls 13 and 14 at the time of pre-adjustment of the roll forming apparatus 10.

In the present embodiment, the outer diameter of the roll blade 32 of the first processing roll 13 and the outer diameter of the roll blade 32 of the second processing roll 14 are the same. Therefore, in order to suppress the deviation of the relative rotation phases of the processing rolls 13 and 14 at the time of pre-adjustment of the roll forming apparatus 10, the rotation speeds of the processing rolls 13 and 14 may be the same.

In this regard, according to the present embodiment, when the side surfaces of the guide plates 34 of the processing rolls 13 and 14 slide with each other, the movement locus of the sliding portion of the guide plate 34 of the first processing roll 13 (FIG. 4 (c)). ) And the movement locus of the sliding portion of the guide plate 34 of the second processing roll 14 (shown by T2 in FIG. 4C) have the same shape (annular shape). As a result, the guide plates 34 having the same shape (specifically, the movement loci of the sliding parts are the same) can be slid and interlocked, so that a simple structure can be easily adopted for each processing roll 13, It is possible to make the rotation speeds of 14 substantially the same. As a result, the deviation of the relative rotation phases of the processing rolls 13 and 14 at the time of pre-adjustment of the roll forming apparatus 10 can be suppressed.

Further, in the roll forming apparatus 10, in order to realize the forming of the workpiece with high accuracy, the relative positions of the roll blade 32 of the first processing roll 13 and the roll blade 32 of the second processing roll 14 in the rotation axis direction (specifically, , The relative position between the surface concave portion of one of the processing rolls 13 and 14 and the surface convex portion of the other roll blade 32) must be accurately determined. Then, in order to realize this, for example, the following (work A), (work B), (work C) and (work D) can be performed separately, but such a series of work is complicated.

(Work A) The fixed position of the roll blade 32 on the first processing roll 13 is adjusted.
(Work B) The fixed position of the roll blade 32 on the second processing roll 14 is adjusted.
(Work C) The mounting position of the first processing roll 13 with respect to the fixed pillar 12A of the pair of support pillars 12 is adjusted.

(Work D) The mounting position of the second processing roll 14 with respect to the moving portion 12B of the pair of support columns 12 is adjusted.
In this respect, in the roll forming apparatus 10 of the present embodiment, the processing rolls 13 and 14 are provided on the second processing roll 14 by the two guide plates 34 provided on the first processing roll 13. Is arranged so as to sandwich the. Therefore, through the following operations, the relative positions of the roll blade 32 of the first processing roll 13 and the roll blade 32 of the second processing roll 14 can be accurately determined. First, when assembling the processing rolls 13 and 14, the relative positions of the roll blade 32 and the guide plate 34 are adjusted. Then, when the processing rolls 13 and 14 are attached to the pair of support columns 12, the two guide plates 34 of the second processing roll 14 are sandwiched between the two guide plates 34 of the first processing roll 13.

In this way, according to the roll forming apparatus 10, both processing rolls 13 and 14 are arranged so as to sandwich the pair of guide plates 34 of the second processing roll 14 between the pair of guide plates 34 of the first processing roll 13. With such a simple operation, the relative positions of the roll blades 32 of the processing rolls 13 and 14 in the rotation axis direction can be accurately determined without performing (operation A) to (operation D).

Further, when the both processing rolls 13 and 14 are arranged, if an unnecessarily large force acts on the surface of the guide plate 34, the surface of the guide plate 34 is deformed. In this case, the rotation axes C2 and C3 (see FIG. 2) of the processing rolls 13 and 14 may deviate from the regular positions, and the accuracy of forming irregularities on the work surface may decrease.

In this regard, in the roll forming apparatus 10 of the present embodiment, as shown in FIG. 6, the guide plates 13A and 14A facing the guide plate 34 of the first processing roll 13 and the guide plate 34 of the second processing roll 14 are guide plates. It has a tapered shape in which the distance between the facing surfaces 13A and 14A increases toward the tip (outer edge) of 34. Specifically, the portions (sliding portions 34A) on the facing surfaces 13A and 14A of the guide plates 34 on which the guide plates 34 slide with each other are flat, and the portions on the outer edge side of the sliding portions 34A (guide portions). 34B) has a tapered surface.

Therefore, as shown by the black arrows in FIG. 6, when the pair of guide plates 34 of the second processing roll 14 are sandwiched between the pair of guide plates 34 of the first processing roll 13, the guide portions of each other When the 34Bs come into contact with each other, the guide plates 34 of both processing rolls 13 and 14 are guided to regular positions in the rotation axis direction. As a result, the processing rolls 13 and 14 can be attached to the pair of support columns 12 while suppressing a large force from acting on the surface of the guide plate 34.

As described above, according to the present embodiment, both the processing rolls 13 and 14 are supported by the pair of the guide plates 34 of the second processing roll 14 so as to be sandwiched between the pair of guide plates 34 of the first processing roll 13. The work of attaching to the pillar 12 can be smoothly performed while being guided by the tapered portion (guide portion 34B) of the guide plate 34.

Further, in the roll forming apparatus 10, when the load applied to the processing rolls 13 and 14 becomes large when forming the work, the processing rolls 13 and 14 bend in the direction in which the processing rolls 13 and 14 are separated from each other. The accuracy of forming irregularities on the work surface may decrease.

In the present embodiment, by supporting the processing rolls 13 and 14 by the pair of auxiliary rolls 19 and 20 and the support plate 33, the processing rolls 13 and 14 are prevented from bending. Specifically, as shown in FIGS. 1 and 2, the position where the two support plates 33 are arranged in the first processing roll 13, that is, the position where the roll blade 32 is sandwiched between them (indicated by F3 and F4 in FIG. 1). The position) is pressurized upward by the first auxiliary roll 19 through the operation of the first cylinder 19A. Further, the position where the two support plates 33 are arranged in the second processing roll 14, that is, the position where the roll blade 32 is sandwiched between them (positions indicated by F1 and F2 in FIG. 1) is determined through the operation of the second cylinder 20A. , Is pressurized downward by the second auxiliary roll 20. As a result, the processing rolls 13, 14 (specifically, the positions F1, F2, F3, F4) are arranged from the outside in the arrangement direction of the pair of processing rolls 13, 14 (vertical direction in FIG. 1). It is supported so as to be sandwiched by 20.

Therefore, when a load is applied to the processing rolls 13 and 14 when forming the work, the processing rolls 13 and 14 bend in the direction in which the processing rolls 13 and 14 (specifically, the forming blade 15) are separated from each other. Is suppressed. As a result, the change in the clearance between the processing rolls 13 and 14 can be suppressed, so that the work can be formed with high accuracy.

In order to suppress the bending of the processing rolls 13 and 14, it is conceivable to adopt a structure in which the surface of the roll blade 32 (molding blade 15) is supported by the auxiliary rolls 19 and 20. In such a device, since the tip of the precision forming blade 15 is pressed by the auxiliary rolls 19 and 20, the forming blade 15 is likely to be deformed (deteriorated), and the durability performance of each of the processing rolls 13 and 14 is improved. It may cause a decrease. Since the roll forming apparatus 10 of the present embodiment has a structure in which the support plate 33 integrated with the roll blade 32 is supported by the auxiliary rolls 19 and 20, the durability performance of the processing rolls 13 and 14 (specifically, the roll blade 32) It is possible to suppress the bending of each of the processing rolls 13 and 14 without causing a decrease in the number of processing rolls 13.

As described above, according to the present embodiment, the effects described below can be obtained.
(1) Each of the processing rolls 13 and 14 has a guide plate 34 integrally provided so as to project in an annular shape over the entire circumference of the processing rolls 13 and 14. Then, the guide plates 34 of the second processing roll 14 are rotated by the rotational force of the guide plates 34 of the first processing roll 13, and the side surfaces of the guide plates 34 are slid so as to face each other in the rotation axis direction. Therefore, it is possible to suppress a decrease in the durability performance of the forming blade 15 due to the deviation of the relative rotation phases of the processing rolls 13 and 14 at the time of pre-adjustment of the roll forming apparatus 10.

(2) The guide plates 34 are provided on the processing rolls 13 and 14 so that the two guide plates 34 of the first processing roll 13 sandwich the two guide plates 34 of the second processing roll 14. There is. Therefore, each processing roll is a simple operation of arranging both processing rolls 13 and 14 so as to sandwich the pair of guide plates 34 of the second processing roll 14 between the pair of guide plates 34 of the first processing roll 13. The relative positions of the roll blades 32 of 13 and 14 in the rotation axis direction can be accurately determined.

(3) The distance between the facing surfaces 13A and 14A between the guide plate 34 of the first processing roll 13 and the guide plate 34 of the second processing roll 14 increases toward the tip of the guide plate 34. It has a tapered shape that is far away. Therefore, the work of attaching both the processing rolls 13 and 14 to the pair of support columns 12 by sandwiching the pair of guide plates 34 of the second processing roll 14 between the pair of guide plates 34 of the first processing roll 13 is guided. It can be smoothly performed while being guided by the tapered portion (guide portion 34B) of the plate 34.

(4) Each of the processing rolls 13 and 14 has a structure capable of assembling and disassembling the rotary shaft 31, the roll blade 32, the support plate 33, the guide plate 34, and the collar 35. As a result, by replacing the roll blades 32 of the processing rolls 13 and 14, separators having different surface irregularities and separators having different sizes can be formed by the same apparatus. Further, when the constituent members of the processing rolls 13 and 14 are deteriorated, only the deteriorated constituent members can be replaced. Further, when the processing rolls 13 and 14 are attached to the apparatus, two operations for adjusting the relative positions of the roll blades 32 of the processing rolls 13 and 14 in the rotation axis direction are provided for each of the processing rolls 13 and 14. This can be easily performed by using the guide plate 34 provided.

(5) The outer diameter of the roll blade 32 of the first processing roll 13 and the outer diameter of the roll blade 32 of the second processing roll 14 are the same. Further, when the side surfaces of the guide plates 34 of the processing rolls 13 and 14 slide with each other, the movement locus of the sliding portion of the guide plate 34 of the first processing roll 13 and the sliding of the guide plate 34 of the second processing roll 14 The movement locus of the part has the same shape. Therefore, the rotation speeds of the processing rolls 13 and 14 can be made substantially the same with a simple structure.

<Modification example>
The above embodiment may be modified as follows.
The positional relationship between the guide plate 34 of the first processing roll 13 and the guide plate 34 of the second processing roll 14 in the rotation axis direction can be arbitrarily changed. For example, each of the processing rolls 13 and 14 is in a state in which each guide plate 34 is sandwiched between the two guide plates 34 provided on the first processing roll 13 by the two guide plates 34 provided on the second processing roll 14. Can be provided in. In addition, the guide plate 34 of the first processing roll 13 and the guide plate 34 of the second processing roll 14 can be arranged so as to be staggered in the rotation axis direction.

A guide plate 34 may be provided on each of the processing rolls 13 and 14. In this case, through the work of attaching the processing rolls 13 and 14 so that the side surface of the guide plate 34 of the first processing roll 13 and the side surface of the guide plate 34 of the second processing roll 14 abut in the rotation axis direction, respectively. It becomes possible to determine the relative positions of the roll blades 32 of the processing rolls 13 and 14.

A portion (guide portion) on the facing surfaces 13A and 14A of the guide plates 34 of the processing rolls 13 and 14 on the outer edge side of the sliding portion 34A, and a planar flat portion and a sliding portion arranged on the outer edge side thereof. It may be composed of a tapered portion having a tapered shape arranged on the 34A side.

-The shape of each guide plate 34 is not limited to the disk shape, and can be changed to any shape. In this case, when the side surfaces of the guide plates 34 of the processing rolls 13 and 14 slide with each other, the movement locus of the sliding portion in the guide plate 34 of the first processing roll 13 and the guide plate 34 of the second processing roll 14 It is preferable that the moving locus of the sliding portion has the same shape.

-The entire facing surfaces 13A and 14A of the guide plates 34 of the processing rolls 13 and 14 may have a flat shape.
As the processing rolls 13 and 14, those that cannot be assembled or disassembled, that is, those in which the rotary shaft 31, the roll blade 32, the support plate 33, and the guide plate 34 are integrally formed can be adopted.

Each auxiliary roll 19 is arranged so that the rotation axes C1 and C4 of the auxiliary rolls 19 and 20 are arranged at positions deviated from the straight line L (see FIG. 1) connecting the rotation axes C2 and C3 of the processing rolls 13 and 14. , 20 may be arranged. The arrangement positions of the auxiliary rolls 19 and 20 may be determined according to the bending direction of the processing rolls 13 and 14 when the work is formed.

The first auxiliary roll 19, the second auxiliary roll 20, and the support plate 33 may be omitted.
-When the side surfaces of the guide plates 34 of the processing rolls 13 and 14 slide with each other, the movement locus of the sliding portion on the guide plate 34 of the first processing roll 13 and the sliding on the guide plate 34 of the second processing roll 14. The shape may be different from the movement locus of the portion. In short, the movement locus of the sliding portion of each guide plate 34 may be determined so that the rotation speeds of the processing rolls 13 and 14 (each roll blade 32) are the same.

The roll forming apparatus of the above embodiment can also be applied to a roll forming apparatus in which the outer diameter of the roll blade 32 of the first processing roll 13 and the outer diameter of the roll blade 32 of the second processing roll 14 are different. In such a device, the shape of each guide plate 34 and the movement locus of the sliding portion of each guide plate 34 are determined so that the moving speeds of the surfaces of the roll blades 32 of the processing rolls 13 and 14 in the rotational direction are the same. Just do it.

10 ... Roll forming apparatus, 11 ... Base, 12 ... Supporting column, 12A ... Fixed column, 12B ... Moving part, 13 ... First processing roll, 14 ... Second processing roll, 15 ... Molding blade, 16 ... Drive gear, 17 ... Driven gear, 18 ... Electric motor, 19 ... 1st auxiliary roll, 19A ... 1st cylinder, 20 ... 2nd auxiliary roll, 20A ... 2nd cylinder, 31 ... Rotating shaft, 31A ... Round bar, 31B ... Rib , 32 ... Roll blade, 33 ... Support plate, 34 ... Guide plate, 34A ... Sliding part, 34B ... Guide part, 35 ... Collar, 36 ... Nut.

Claims (4)

A pair of machining rolls arranged so that the outer peripheral surfaces face each other and a part of the outer peripheral surfaces forms a forming blade, and a first machining roll which is one of the pair of machining rolls. The gear, the driven gear that meshes with the driving gear integrally with the second machining roll, which is the other machining roll of the pair of machining rolls, and the driven gear that is connected to the first machining roll to rotate drive the machining roll. With a drive source,
The work is passed between the pair of machining rolls in a state where the pair of machining rolls are rotated through the rotational drive of the first machining roll by the drive source and the meshing of the driving gear and the driven gear. The work is processed and molded,
The pre-adjustment prior to the machining is performed by passing the work between the pair of machining rolls in a state where the gap is widened, and then moving at least one of the pair of machining rolls so as to narrow the gap. A roll forming device that rotates a pair of processing rolls.
Each of the pair of processing rolls has a guide plate integrally provided so as to project in an annular shape over the entire circumference of the processing roll.
The first processing roll includes a pair of first guide plates as two guide plates arranged at positions sandwiching the forming blade in the extending direction of the rotation axis of the first processing roll.
The second processing roll includes a pair of second guide plates as the two guide plates arranged at positions sandwiching the forming blade in the extending direction of the rotation axis of the second processing roll.
The pair of the first guide plates and the pair of the second guide plates are arranged so that one pair of the guide plates sandwiches the other pair of the guide plates.
The outer diameters of the plurality of guide plates are the same, and are larger than the outer diameter of the forming blade of the first processing roll and the outer diameter of the forming blade of the second processing roll .
In an embodiment in which the guide plate of the second processing roll is rotated by the rotational force of the guide plate of the first processing roll, the side surface of the first guide plate and the side surface of the second guide plate are the pair of processing rolls. A roll forming apparatus that slides oppositely in the extending direction of the rotating shaft of. A part of the facing surface of the first guide plate integrated with the first processing roll and the second guide plate integrated with the second processing roll becomes the facing surface toward the tip of the guide plate. The roll forming apparatus according to claim 1 , which has a tapered shape in which a gap between the two is widened. The processing roll has a roll blade and a guide plate whose outer peripheral surface is fitted on the same rotary shaft as the rotary shaft and whose outer peripheral surface forms the molding blade, and the rotary shaft, the roll blade, and the guide plate. The roll forming apparatus according to claim 1 or 2 , which has a structure capable of being assembled and disassembled. The outer diameter of the forming blade of the first processing roll and the outer diameter of the forming blade of the second processing roll are the same.
The movement trajectory of the portion where the second guide plate slides of the said first work roll wherein the first guide plate the second work roll, claim the moving locus definitive each guide plate is the same shape The roll molding apparatus according to any one of 1 to 3.

Images