CA2176281C - Roll former with side edge control - Google Patents
Roll former with side edge controlInfo
- Publication number
- CA2176281C CA2176281C CA 2176281 CA2176281A CA2176281C CA 2176281 C CA2176281 C CA 2176281C CA 2176281 CA2176281 CA 2176281 CA 2176281 A CA2176281 A CA 2176281A CA 2176281 C CA2176281 C CA 2176281C
- Authority
- CA
- Canada
- Prior art keywords
- web
- roll forming
- side flange
- dies
- flanges
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
A roll forming apparatus having a plurality of roller die stands, through which a web workpiece is passed, for progressively forming edge flange bends and for subsequently forming side flange bends between the side flanges and the web, and having side flange corner forming upper dies which are mounted on angled spindles, and fit around the edge flanges and enter into the side flange corners, and further having side flange control rolls engaging the outer surface of the side flanges, the control rolls being movably mounted for tilting inwardly or outwardly, so as to produce a greater or lesser degree of bend between the side flanges and the web.
Description
FIFt~Tn OF T~F~ I~VF~TION
The invention relates to the roll forming of strip sheet metal, and in particular to the controlling of side flange angles on such strip sheet metal workpiece.
R~cK(~RouNn OF T~Ti~ TNVT~NTION
When roll forming metal sections, particularly those whicn are required to have precise angles and dimensions, th~re may be considerable difficulty in maintaining accurate tolerances on the angles. This is due to such variable factors as variations in the composition of the sheet metal itself, variations in the metal thickness, die wear, line speed, to mention only a few factors.
In one particular case, namely rolling a rectangular C-sec~ion, the close tolerances of these angles is of particular importance. Such C-sections are almost invariably manufactured for use in the construction of walls, floors, roofs and other parts of buildings. It is essential, in this type of product being used for this type of application, that the angles of the bends shall be maintained to very close tolerances.
Another factor which arises, particularly when making C-section formations, is the fact that the C-section involves two right-angle bends on each side. The finished C-section will typically have a flat web surface, and a right-angular side flange along each side of the web, and an inturned edge flange along each side of the side flange.
CA 02176281 1998-03-ll The angles of both the side flanges and the edge flange are typically 90 degrees.
It will thus be appreciated that while the forming of the right-angle edge flange, relative to the plane of the web is a simple operation, the subsequent forming of the right-angle bend between the side flange and the web becomes much more difficult. This is because the edge flange interferes with the location of the upper roller die in the die stands, where the side bends are being brought up to or close to 90 degress .
It is clearly therefore desirable to provide a roll for~ing apparatus overcoming both factors, namely, the main~aining of close tolerances on the right-angled bend between the side flange and the web, and the achievement of forming the right-angled bend between the side flanges and the web, after the edge flanges have already been bent in to the desired angle.
RRIFF .~U~ARY OF T~F T~rVFNTTON
With a view to overcoming the foregoing problems, the invention comprises a roll forming apparatus of the type having a plurality of roller die stands, through which a web workpiece is passed, for progressively forming the edge flange bends and for subsequently forming portions of the side flange bends between the side flanges and the web, and further have upper side flange corner forming dies, corlprising upper dies which are mounted on angled spindles, 1~ , .
and are adapted to fit around the edge flanges and enter into the side flange corners, and further having side flange supports engaging the outer surfaces of the side flanges.
The invention further comprises the provision of side flange control rolls engaging the outer surface of the side flanges, the control rolls being movably mounted for tilting in~;ardly or outwardly, so as to produce a greater or lesser degree of bend between the side flanges and the web.
The invention also includes the provision of a mo~orized control system for the side flange control rolls, whereby they can be tilted in and out by power operated means, and side flange angle sensors for sensing the angle of the side flange, and operating the motor means.
The invention also provides an adjustable mounting for ~he upper angled dies by means of which they can be adjusted to accommodate variations in metal thickness, by adjusting their position relative to the lower rolls both in a vertical plane and in a horizontal plane.
The various features of novelty which characterize the invention are pointed out with more particularity in the c~aims annexed to and forming a part of this disclosure.
For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings and descriptive matter in which there are illustrated and desrribed preferred embodiments of the invention.
IN T~ nRA~INGs Figure 1 is a side elevational view of a typical roll forming line, incorporating the corner former rolls, and the side flange control rolls illustrating the invention;
Figure 2 is a top plan view of the roller die apparatus of Figure 1;
Figure 3 is an enlarged section along the line 3-3 of Figure 2, showing one side of the upper angled corner forming dies and side control rolls of the apparatus, and the C-section web, and showing transverse adjustment movement in phantom;
Figure 4 is a perspective illustration of the mounting apparatus upon which the side control rolls are mounted;
Figure 5 is an exploded perspective corresponding to Figure 4, and, Figure 6 is a front elevational view of one of the angled upper dies, showing the adjustable mounting and showing vertical adjustment as an arrow.
n~ RIpTIoN OF A .~P~TFIC ~MRonTM~NT
Referring first of all to Figures 1 and 2, it will be seen that the invention here is described in association with a complete roll forming line of a design indicated generally as 10. Such a roll forming line will be seen to comprise a plurality of roller die stands 12A, 12B, etc., dr ven by suitable motor means, the details of which are well known in the art. The workpiece will move from right '~_ to left, i.e. in the direction of the arrow W. The roll forming line ~hown in this embodiment is of a unique design :in that it permits transverse adjustment movement of the dies and also vertical adjustment movement of the dies so as to accommodate variations in the thickness of the web, during actual use. The design also permits changing of the width of the spacing between dies on opposite sides of the line, and also permits easy interchange of one set of dies for another. All of this is described in co-pending Canadian application Sn. 2,154,816, filed 07/27/1995. The details of the construction of such a line are therefore omitted for the sake of clarity.
While the invention is thus illustrated in this form of roll forming line, it will be understood that the invention is not restricted to such a complex and unique form of roll forming line. Roll forming line designs of simpler standard designs are well known in the art and require no special description.
The present invention is equally applicable to such standard well known roll forming lines and will produce great advantages in such lines.
As the workpiece moves along the roller die stands, the workpiece which is initially flat will be progressively formed into the desired shape, in a manner well known in the art.
'~_ In the present example, for the purposes of illustrating this invention, the workpiece that is intended to be produced is shown in the form of a C-section of rectangular shape indicated generally as C (Figure 3). It has a generally planar web W, side flanges S, and edge flanges E. The edge flanges, in this embodiment, make a right-angle with the side flanges and the side flanges, in this embodiment, make right-angles with the web. Such rectangular C-sections are commonly used in construction for a ~7ide variety of structural and supporting purposes.
As the web workpiece passes down through the stations 12A, 12B, etc., the edge flanges E are formed first, in ac~ordance with well known practice. At subsequent stations, the side flanges are progressively bent up from the web. This bending takes place progressively, at angles typically of 10 to 20 degrees for each set of roller dies.
When the side flanges reach angles of about 70 to 80 degrees relative to the web W, the edge flanges E will begin to interfere with the upper roller dies, so that the side flanges cannot bend in any further.
In order to complete the last bends of the side flanges from 80 to 90 degrees relative to the web, the invention provides sets of upper angled corner forming rolls or dies 20 and 22, spaced apart from one another along the length of the apparatus for reasons to be described below, and staggered alternately from side to side of the apparatus.
'~
The purpose for this is to allow the roller die stands to be moved close together, for forming a workpiece which is relatively narrow. If the pairs of angled corner dies 20 and 22 were registering with one another, instead of being staggered or offset, then it would not be possible to bring them as close together as might be desired to make a narrow web.
As shown in Figure 3, the upper angled dies 20 and 22 are mounted on downwardly angled axle shafts 24. There is no drive mechanism shown, in this embodiment of the invention, since the friction of the workpiece will be sufficient to drive the angled dies 20 and 22. However if required the upper dies could of course be driven by suitable angled, or universal drives.
The angled rolls or dies 20 and 22 co-operate with respective lower dies 26, which engage the under surface of the web W. The lower dies 26 are driven by any suitable mechanism such as shaft 28 and gear 30. The angled dies can also be driven, though any suitable means such as angle drives of a type well known in the art, and requiring no description.
Because the upper angle rolls or dies 20 and 22 are angled inwardly, and are of substantial diameter, they are able to reach around the inturned edge flanges E, and reach into the corners or bends defined between the web W and the side flanges S. In this way a full 90 degree bend at this , CA 02176281 1998-03-11 _,i point or even greater angle if required is made possible using the invention. It would be possible to make the bend of an angle greater than 90 degrees if desired.
- As already noted, the upper angle dies are staggered offset in pairs of right and left hand dies, so that even when the opposite roller die stands are brought close together for a narrow workpiece, as in the case of the universal and adjustable roller die line described above, the upper angle dies can fit between each other and do not interfere with one another, and consequently this enables great flexibility in use since the apparatus can be used with relatively narrow web workpieces.
At this stage, it will be apparent that the roller die stands may be made of conventional design, all being made separate from one another, or may be of a universally adJustable design, of the type described generally above, in which the roller die stands are mounted in continuous solid mounting plates 32 and 34, with the plates being moveable and adjustable towards and away from one another so as to readily accommodate workpieces of different widths.
In order to hold the precise angle of bend between the workpiece W and the side edges or flanges S on each side, a plurality of side edge rolls 40, 42, etc. are provided. The side edge rolls 40 and 42 are freely-rotatably mounted on axie shafts 44. As best shown in Figures 4 and 5, the axle shafts 44 of the rolls 40 and 42 are mounted in tilting ~' mounting blocks 46. Mounting blocks 46 are formed with arcuate segments 48 on either side thereof. Segments 48 are received within arcuate grooves 50, formed in cheek blocks 52. Cheek blocks 52 are adapted to be secured by bolts 54 to the main mounting plates 32-34 of the apparatus.
The mounting blocks 46 are formed with an arch shaped channel 56 therethrough, to receive the lower die shaft 28.
The mounting blocks 46 are provided with slotted recesses 58. The recesses 58 are designed to receive the lower ends 60 of jack screws 62. Jack screws 62 can be operated by ~leans of electrical motors 64.
In this way, operation of the motors 64 in one direction will cause tilting of the blocks upwardly, and operation of the motors 64 in the other direction will cause tilting of the blocks 46 downwardly. This will in turn cause inward and outward tilting of the side edge rolls 40 and 4Z (see Figure 4).
By means of a suitable angle sensor 66 (Fig 2), the - anale of the side flange S relative to the web W can be detected, and any variation can be instantaneously fed back to the motors 64 which will in turn correct the tilt of the side rolls 40 and 42, thus correcting the angle of the side .langes.
The lower ends 60 of jack screws 62 are pivotally secured in slots 58 by means of axle pins 70.
In certain cases it may be desirable to provide for adjustment of the upper corner forming angled dies 20,22, , to allow for changes in the thickness of the web material for example. Such adjustment will be particularly useful when the invention is used in conjunction with the universal type of roll forming line described above (Fig 1 and 2), in which upper and lower dies at some roller stands can be continuously adjusted to provide greater or lesser clearance between the dies to accommodate changes in the thickness of the workpiece.
Thus the upper corner forming dies may be mounted on moveable mounting bodies 72 which are separate from the main mounting plates 18 and 20. Mounting bodies 72 are mounted on parallel posts 74 extending vertically upward from the plates 32-34.
T~e lower dies 26 are preferably formed so as to extend the full width of the web of the workpiece and are shaped at each end shaped with a narrow angular rim 76 extending outwardly form the main body of the die 26. The upper dies are also formed with a complementary ridge 78. The ridge and the rim cooperate together to lock the corner or bend of the workpiece between the rim and the ridge and thus form a precision shaped angular bend, usually of 90 degrees, at this point.
A screw adjustment 80 (Fig6)is provided which can be operated to cause mounting bodies 72 to slide upwardly or ~_ .
downwardly on posts 74. A dial 82 enables a visual check of the setting of the bodies 72. A motor 84 can be provided for operating screw 80. The motor can be connected to the main control console controlling all of the roller die stands (not shown), enabling the entire line to be automatically adjusted on a continuous basis to accommodate changes in web thickness.
In order to adjust the upper dies transversely, the columns 74 are mounted in bases 86, held by rails 88. Bases can thus be slid transversely in and out. An adjustment screw 90 is provided, which can also be motor driven if desired, by means not shown. Operation of screw 90 will callse transverse inward or outward sliding movement of base 86 thus adjusting the upper die inwardly or outwardly, as shown in phantom in Fig 3, relative to the lower die and relative to the side rolls, to allow for variations in web thickness.
The foregoing is a description of a preferred embodiment of the invention which is given here by way of exa~ple only. The invention is not to be taken as limited to any of the specific features as described, but compr~hPnAs all such variations thereof as come within the - scope of the appended claims.
The invention relates to the roll forming of strip sheet metal, and in particular to the controlling of side flange angles on such strip sheet metal workpiece.
R~cK(~RouNn OF T~Ti~ TNVT~NTION
When roll forming metal sections, particularly those whicn are required to have precise angles and dimensions, th~re may be considerable difficulty in maintaining accurate tolerances on the angles. This is due to such variable factors as variations in the composition of the sheet metal itself, variations in the metal thickness, die wear, line speed, to mention only a few factors.
In one particular case, namely rolling a rectangular C-sec~ion, the close tolerances of these angles is of particular importance. Such C-sections are almost invariably manufactured for use in the construction of walls, floors, roofs and other parts of buildings. It is essential, in this type of product being used for this type of application, that the angles of the bends shall be maintained to very close tolerances.
Another factor which arises, particularly when making C-section formations, is the fact that the C-section involves two right-angle bends on each side. The finished C-section will typically have a flat web surface, and a right-angular side flange along each side of the web, and an inturned edge flange along each side of the side flange.
CA 02176281 1998-03-ll The angles of both the side flanges and the edge flange are typically 90 degrees.
It will thus be appreciated that while the forming of the right-angle edge flange, relative to the plane of the web is a simple operation, the subsequent forming of the right-angle bend between the side flange and the web becomes much more difficult. This is because the edge flange interferes with the location of the upper roller die in the die stands, where the side bends are being brought up to or close to 90 degress .
It is clearly therefore desirable to provide a roll for~ing apparatus overcoming both factors, namely, the main~aining of close tolerances on the right-angled bend between the side flange and the web, and the achievement of forming the right-angled bend between the side flanges and the web, after the edge flanges have already been bent in to the desired angle.
RRIFF .~U~ARY OF T~F T~rVFNTTON
With a view to overcoming the foregoing problems, the invention comprises a roll forming apparatus of the type having a plurality of roller die stands, through which a web workpiece is passed, for progressively forming the edge flange bends and for subsequently forming portions of the side flange bends between the side flanges and the web, and further have upper side flange corner forming dies, corlprising upper dies which are mounted on angled spindles, 1~ , .
and are adapted to fit around the edge flanges and enter into the side flange corners, and further having side flange supports engaging the outer surfaces of the side flanges.
The invention further comprises the provision of side flange control rolls engaging the outer surface of the side flanges, the control rolls being movably mounted for tilting in~;ardly or outwardly, so as to produce a greater or lesser degree of bend between the side flanges and the web.
The invention also includes the provision of a mo~orized control system for the side flange control rolls, whereby they can be tilted in and out by power operated means, and side flange angle sensors for sensing the angle of the side flange, and operating the motor means.
The invention also provides an adjustable mounting for ~he upper angled dies by means of which they can be adjusted to accommodate variations in metal thickness, by adjusting their position relative to the lower rolls both in a vertical plane and in a horizontal plane.
The various features of novelty which characterize the invention are pointed out with more particularity in the c~aims annexed to and forming a part of this disclosure.
For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings and descriptive matter in which there are illustrated and desrribed preferred embodiments of the invention.
IN T~ nRA~INGs Figure 1 is a side elevational view of a typical roll forming line, incorporating the corner former rolls, and the side flange control rolls illustrating the invention;
Figure 2 is a top plan view of the roller die apparatus of Figure 1;
Figure 3 is an enlarged section along the line 3-3 of Figure 2, showing one side of the upper angled corner forming dies and side control rolls of the apparatus, and the C-section web, and showing transverse adjustment movement in phantom;
Figure 4 is a perspective illustration of the mounting apparatus upon which the side control rolls are mounted;
Figure 5 is an exploded perspective corresponding to Figure 4, and, Figure 6 is a front elevational view of one of the angled upper dies, showing the adjustable mounting and showing vertical adjustment as an arrow.
n~ RIpTIoN OF A .~P~TFIC ~MRonTM~NT
Referring first of all to Figures 1 and 2, it will be seen that the invention here is described in association with a complete roll forming line of a design indicated generally as 10. Such a roll forming line will be seen to comprise a plurality of roller die stands 12A, 12B, etc., dr ven by suitable motor means, the details of which are well known in the art. The workpiece will move from right '~_ to left, i.e. in the direction of the arrow W. The roll forming line ~hown in this embodiment is of a unique design :in that it permits transverse adjustment movement of the dies and also vertical adjustment movement of the dies so as to accommodate variations in the thickness of the web, during actual use. The design also permits changing of the width of the spacing between dies on opposite sides of the line, and also permits easy interchange of one set of dies for another. All of this is described in co-pending Canadian application Sn. 2,154,816, filed 07/27/1995. The details of the construction of such a line are therefore omitted for the sake of clarity.
While the invention is thus illustrated in this form of roll forming line, it will be understood that the invention is not restricted to such a complex and unique form of roll forming line. Roll forming line designs of simpler standard designs are well known in the art and require no special description.
The present invention is equally applicable to such standard well known roll forming lines and will produce great advantages in such lines.
As the workpiece moves along the roller die stands, the workpiece which is initially flat will be progressively formed into the desired shape, in a manner well known in the art.
'~_ In the present example, for the purposes of illustrating this invention, the workpiece that is intended to be produced is shown in the form of a C-section of rectangular shape indicated generally as C (Figure 3). It has a generally planar web W, side flanges S, and edge flanges E. The edge flanges, in this embodiment, make a right-angle with the side flanges and the side flanges, in this embodiment, make right-angles with the web. Such rectangular C-sections are commonly used in construction for a ~7ide variety of structural and supporting purposes.
As the web workpiece passes down through the stations 12A, 12B, etc., the edge flanges E are formed first, in ac~ordance with well known practice. At subsequent stations, the side flanges are progressively bent up from the web. This bending takes place progressively, at angles typically of 10 to 20 degrees for each set of roller dies.
When the side flanges reach angles of about 70 to 80 degrees relative to the web W, the edge flanges E will begin to interfere with the upper roller dies, so that the side flanges cannot bend in any further.
In order to complete the last bends of the side flanges from 80 to 90 degrees relative to the web, the invention provides sets of upper angled corner forming rolls or dies 20 and 22, spaced apart from one another along the length of the apparatus for reasons to be described below, and staggered alternately from side to side of the apparatus.
'~
The purpose for this is to allow the roller die stands to be moved close together, for forming a workpiece which is relatively narrow. If the pairs of angled corner dies 20 and 22 were registering with one another, instead of being staggered or offset, then it would not be possible to bring them as close together as might be desired to make a narrow web.
As shown in Figure 3, the upper angled dies 20 and 22 are mounted on downwardly angled axle shafts 24. There is no drive mechanism shown, in this embodiment of the invention, since the friction of the workpiece will be sufficient to drive the angled dies 20 and 22. However if required the upper dies could of course be driven by suitable angled, or universal drives.
The angled rolls or dies 20 and 22 co-operate with respective lower dies 26, which engage the under surface of the web W. The lower dies 26 are driven by any suitable mechanism such as shaft 28 and gear 30. The angled dies can also be driven, though any suitable means such as angle drives of a type well known in the art, and requiring no description.
Because the upper angle rolls or dies 20 and 22 are angled inwardly, and are of substantial diameter, they are able to reach around the inturned edge flanges E, and reach into the corners or bends defined between the web W and the side flanges S. In this way a full 90 degree bend at this , CA 02176281 1998-03-11 _,i point or even greater angle if required is made possible using the invention. It would be possible to make the bend of an angle greater than 90 degrees if desired.
- As already noted, the upper angle dies are staggered offset in pairs of right and left hand dies, so that even when the opposite roller die stands are brought close together for a narrow workpiece, as in the case of the universal and adjustable roller die line described above, the upper angle dies can fit between each other and do not interfere with one another, and consequently this enables great flexibility in use since the apparatus can be used with relatively narrow web workpieces.
At this stage, it will be apparent that the roller die stands may be made of conventional design, all being made separate from one another, or may be of a universally adJustable design, of the type described generally above, in which the roller die stands are mounted in continuous solid mounting plates 32 and 34, with the plates being moveable and adjustable towards and away from one another so as to readily accommodate workpieces of different widths.
In order to hold the precise angle of bend between the workpiece W and the side edges or flanges S on each side, a plurality of side edge rolls 40, 42, etc. are provided. The side edge rolls 40 and 42 are freely-rotatably mounted on axie shafts 44. As best shown in Figures 4 and 5, the axle shafts 44 of the rolls 40 and 42 are mounted in tilting ~' mounting blocks 46. Mounting blocks 46 are formed with arcuate segments 48 on either side thereof. Segments 48 are received within arcuate grooves 50, formed in cheek blocks 52. Cheek blocks 52 are adapted to be secured by bolts 54 to the main mounting plates 32-34 of the apparatus.
The mounting blocks 46 are formed with an arch shaped channel 56 therethrough, to receive the lower die shaft 28.
The mounting blocks 46 are provided with slotted recesses 58. The recesses 58 are designed to receive the lower ends 60 of jack screws 62. Jack screws 62 can be operated by ~leans of electrical motors 64.
In this way, operation of the motors 64 in one direction will cause tilting of the blocks upwardly, and operation of the motors 64 in the other direction will cause tilting of the blocks 46 downwardly. This will in turn cause inward and outward tilting of the side edge rolls 40 and 4Z (see Figure 4).
By means of a suitable angle sensor 66 (Fig 2), the - anale of the side flange S relative to the web W can be detected, and any variation can be instantaneously fed back to the motors 64 which will in turn correct the tilt of the side rolls 40 and 42, thus correcting the angle of the side .langes.
The lower ends 60 of jack screws 62 are pivotally secured in slots 58 by means of axle pins 70.
In certain cases it may be desirable to provide for adjustment of the upper corner forming angled dies 20,22, , to allow for changes in the thickness of the web material for example. Such adjustment will be particularly useful when the invention is used in conjunction with the universal type of roll forming line described above (Fig 1 and 2), in which upper and lower dies at some roller stands can be continuously adjusted to provide greater or lesser clearance between the dies to accommodate changes in the thickness of the workpiece.
Thus the upper corner forming dies may be mounted on moveable mounting bodies 72 which are separate from the main mounting plates 18 and 20. Mounting bodies 72 are mounted on parallel posts 74 extending vertically upward from the plates 32-34.
T~e lower dies 26 are preferably formed so as to extend the full width of the web of the workpiece and are shaped at each end shaped with a narrow angular rim 76 extending outwardly form the main body of the die 26. The upper dies are also formed with a complementary ridge 78. The ridge and the rim cooperate together to lock the corner or bend of the workpiece between the rim and the ridge and thus form a precision shaped angular bend, usually of 90 degrees, at this point.
A screw adjustment 80 (Fig6)is provided which can be operated to cause mounting bodies 72 to slide upwardly or ~_ .
downwardly on posts 74. A dial 82 enables a visual check of the setting of the bodies 72. A motor 84 can be provided for operating screw 80. The motor can be connected to the main control console controlling all of the roller die stands (not shown), enabling the entire line to be automatically adjusted on a continuous basis to accommodate changes in web thickness.
In order to adjust the upper dies transversely, the columns 74 are mounted in bases 86, held by rails 88. Bases can thus be slid transversely in and out. An adjustment screw 90 is provided, which can also be motor driven if desired, by means not shown. Operation of screw 90 will callse transverse inward or outward sliding movement of base 86 thus adjusting the upper die inwardly or outwardly, as shown in phantom in Fig 3, relative to the lower die and relative to the side rolls, to allow for variations in web thickness.
The foregoing is a description of a preferred embodiment of the invention which is given here by way of exa~ple only. The invention is not to be taken as limited to any of the specific features as described, but compr~hPnAs all such variations thereof as come within the - scope of the appended claims.
Claims (18)
1. A roll forming apparatus of the type having a plurality of roller die stands, through which a web workpiece is passed, for progressively forming a workpiece having edge flange bends and for subsequently forming side flange bends between said edge flanges of said workpiece and the web, and comprising;
a plurality of lower web support rolls;
a plurality of side flange corner forming upper dies, said upper dies being arranged in right and left hand locations, said right hand upper dies being offset with respect to said left hand upper dies;
downwardly angled spindles on which said upper dies are mounted, whereby said upper dies lie in planes inwardly angled with respect to said web and being thereby adapted to fit around said edge flanges of said workpiece and enter into the side flange bends, and, side flange support means engaging the outer surface of said side flanges at said bends, whereby said upper dies may apply pressure to said side flange bends.
a plurality of lower web support rolls;
a plurality of side flange corner forming upper dies, said upper dies being arranged in right and left hand locations, said right hand upper dies being offset with respect to said left hand upper dies;
downwardly angled spindles on which said upper dies are mounted, whereby said upper dies lie in planes inwardly angled with respect to said web and being thereby adapted to fit around said edge flanges of said workpiece and enter into the side flange bends, and, side flange support means engaging the outer surface of said side flanges at said bends, whereby said upper dies may apply pressure to said side flange bends.
2. A roll forming apparatus as claimed in claim 1 including moveable mounting means supporting said upper dies whereby said right and left hand upper dies may be moved towards one another bringing said upper dies into overlapping relation.
3. A roll forming apparatus as claimed in claim 1 angled shaft means supporting said upper dies whereby to locate said upper dies in said angled planes.
4. A roll forming apparatus as claimed in claim 3 including power operated drive means coupled to said shaft means for driving said upper dies.
5. A roll forming apparatus as claimed in claim 3 and including moveable support means supporting said shafts, said support means being moveable to raise and lower said shafts thereby moving said upper dies away from and towards said side flange bends to accommodate variations in the thickness of said web material.
6. A roll forming apparatus as claimed in claim 5 and wherein said moveable support means is moveable laterally so as to move said upper dies into and out of said side flange bends.
7. A roll forming apparatus as claimed in claim 1 including side support rolls mounted adjacent said side flanges of said web and adapted to engage the outward surfaces of said side flanges and rotatable in unison with movement of said workpiece.
8. A roll forming apparatus as claimed in claim 7 and including control motor means for moving said side flange control rolls, whereby they can be tilted in and out by said motor means, and side flange angle sensors for sensing the angle of the side flanges, and operating said motor means.
9. A roll forming apparatus as claimed in claim 7 and including mounting blocks for mounting said side control rolls, and means movably supporting said mounting blocks whereby the same may be tilted between two positions.
10. A roll forming apparatus as claimed in claim 9 and including cheek plates secured in pairs on opposite sides of said mounting blocks, arcuate grooves formed in said cheek plates, and arcuate ridges formed on said mounting blocks and movably received in respective said arcuate grooves.
11. A roll forming apparatus as claimed in claim 10 and including arch shaped passageways formed in said mounting blocks for receiving drive shafts therein for driving said lower rolls.
12 A roll forming apparatus as claimed in claim 10 and including a slotted recess formed in each said mounting block, and control means for said mounting blocks, a portion of said control means being received in said slotted recess.
13. A roll forming apparatus as claimed in claim 3 and including angled roll mounting means for mounting said angled rolls, and bearing means supported by said mounting means defining a bearing axis, said bearing axis being angled to conform to the roll axis of said angled roll.
14. A method of roll forming a web workpiece by passing the web through a plurality of roller die stands, for progressively forming a workpiece with edge flange bends and for subsequently forming side flange bends between side flanges of said workpiece and the centre of the web, and comprising;
forming said side flange bends by passing said side flanges of said workpiece between lower transverse support rolls supporting said web and upper side flange corner forming dies;
said upper corner forming dies being mounted at angles directed inwardly towards said side flange bends, whereby said upper corner forming dies fit around said edge flanges of said workpiece and enter into the side flange bends, and, engaging said side flanges on their outwardly directed sides by side flange supports engaging the outer surface of said side flanges.
forming said side flange bends by passing said side flanges of said workpiece between lower transverse support rolls supporting said web and upper side flange corner forming dies;
said upper corner forming dies being mounted at angles directed inwardly towards said side flange bends, whereby said upper corner forming dies fit around said edge flanges of said workpiece and enter into the side flange bends, and, engaging said side flanges on their outwardly directed sides by side flange supports engaging the outer surface of said side flanges.
15. A method of roll forming as claimed in claim 14 including the step of moving said upper dies upwardly and downwardly to accommodate variations in the thickness of the web material.
16. A method of roll forming as claimed in claim 14 including the step of moving said upper dies inwardly and outwardly to accommodate variations in the thickness of the web material.
17. A method of roll forming as claimed in claim 13 and including the steps of supporting said side flanges by side support rolls rotatably engaging the outer surfaces of said side flanges.
18. A method of roll forming as claimed in claim 17 and including the steps of continuously sensing the angles of said side flanges and tilting said side flange support rolls, whereby they adjust the angles of said side flanges.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2176281 CA2176281C (en) | 1996-05-10 | 1996-05-10 | Roll former with side edge control |
| PCT/CA1996/000508 WO1997004892A1 (en) | 1995-07-27 | 1996-07-26 | Roll forming apparatus and method |
| DE69602948T DE69602948D1 (en) | 1995-07-27 | 1996-07-26 | METHOD AND DEVICE FOR ROLL SHAPING |
| AU65113/96A AU720605B2 (en) | 1995-07-27 | 1996-07-26 | Roll forming apparatus and method |
| CZ98153A CZ15398A3 (en) | 1995-07-27 | 1996-07-26 | Process of forming sections between rollers and apparatus for making the same |
| AT96924725T ATE181263T1 (en) | 1995-07-27 | 1996-07-26 | METHOD AND DEVICE FOR ROLL FORMING |
| JP50705397A JP4052394B2 (en) | 1995-07-27 | 1996-07-26 | Roll forming apparatus and method |
| EP96924725A EP0841998B1 (en) | 1995-07-27 | 1996-07-26 | Roll forming apparatus and method |
| US08/983,089 US5970764A (en) | 1995-07-27 | 1996-07-26 | Roll forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2176281 CA2176281C (en) | 1996-05-10 | 1996-05-10 | Roll former with side edge control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2176281A1 CA2176281A1 (en) | 1997-11-11 |
| CA2176281C true CA2176281C (en) | 1999-01-19 |
Family
ID=4158177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2176281 Expired - Fee Related CA2176281C (en) | 1995-07-27 | 1996-05-10 | Roll former with side edge control |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2176281C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6223577B1 (en) | 1999-11-04 | 2001-05-01 | Panelmaster International, Inc. | Automated profile control—roll forming |
| CN107470398B (en) * | 2017-09-21 | 2023-03-31 | 新乡天丰机械制造有限公司 | Online automatic correcting device of opening symmetry clod wash section bar |
-
1996
- 1996-05-10 CA CA 2176281 patent/CA2176281C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2176281A1 (en) | 1997-11-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20140512 |