CA1051720A - Press mechanism for stamp forming articles from plate material - Google Patents
Press mechanism for stamp forming articles from plate materialInfo
- Publication number
- CA1051720A CA1051720A CA264,803A CA264803A CA1051720A CA 1051720 A CA1051720 A CA 1051720A CA 264803 A CA264803 A CA 264803A CA 1051720 A CA1051720 A CA 1051720A
- Authority
- CA
- Canada
- Prior art keywords
- strip
- carriers
- frame
- dies
- carrier
- 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
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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
-
- 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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/06—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by drawing
-
- 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
Abstract
ABSTRACT OF THE DISCLOSURE
Apparatus for forming, from a flat metal strip, a contoured section having a constant profile which prevails throughout the length of the section and is progressively applied to the strip by advancing the strip longitudinally into and through the working ambit of complementary first and second forming dies; said apparatus comprising, a machine frame, a pair of carriers which have said forming dies respectively mounted thereon, means for mounting one of said carriers on said frame so that the die carried thereby is able to move relative to said frame with a first component of reciprocatory motion normal to the second of said dies and with a second component of reciprocatory motion in the direction of strip advancement between said dies, means for mounting the second of said carriers on said frame so that the die carried by it is movable relative to said frame at least in the said direction of strip advancement, and drive mechanism whereby at least said first die is driven in exercise of its movability as aforesaid, and so that at all times of operation said dies remain spaced apart at least by a pre-selected minimum distance.
Apparatus for forming, from a flat metal strip, a contoured section having a constant profile which prevails throughout the length of the section and is progressively applied to the strip by advancing the strip longitudinally into and through the working ambit of complementary first and second forming dies; said apparatus comprising, a machine frame, a pair of carriers which have said forming dies respectively mounted thereon, means for mounting one of said carriers on said frame so that the die carried thereby is able to move relative to said frame with a first component of reciprocatory motion normal to the second of said dies and with a second component of reciprocatory motion in the direction of strip advancement between said dies, means for mounting the second of said carriers on said frame so that the die carried by it is movable relative to said frame at least in the said direction of strip advancement, and drive mechanism whereby at least said first die is driven in exercise of its movability as aforesaid, and so that at all times of operation said dies remain spaced apart at least by a pre-selected minimum distance.
Description
~S~
This invention relates Lo the formation of contoured metal sections such as chann~els, studs, corrugated cladding sheets, rlbbed decking sheets, highway guard or safety rails and other structural or like elongated elements; from flat strip, sheet or plate metal (hereinafter referred to simply as "strip").
Such metal sections have longitudinally extending shaping such as flutes, corrugations, ~lange, ribs and like formations, which give the section a contoured "non-flat' transverse cross-sectional shape which is known as the profile of the section and prevails constantly throughout the length of the section.
Contoured metal s ctions, when the strip is of relatively light gauge, can be produced by roll forming.
Where the gauge of the metal is too great for roll forming the articles can be formed directly from the strip, in a heavy brake press, in a single blow of the press; but this requires expensive dies and a large and expensive press;
moreover, the length of the articles has to be limi~ed to ~what the press can handleO
An alternative to the prior art ~ethods discussed above is t~o form the contoured metal sections by what is known as "Progressive Stamp Forming". An example o this kind of metal shaping is provided by the invention subject of our British Prior Patent 1,450,235.
Shortly stated, progressive stamp forming as practiced in terms of the said British Patent, consists ~ ~:
in forming, from a flat metal strip, a contoured section having a constant profile which prevails throughout the length of the section; the method comprising:
(a) intermittently advancing the strip longit-udinally into and through the working ambit of a pair of mutually reciprocating press tools so that each advancement step is perpendicular to the direction of tool reciprocation and is a fraction of the length of the tools measured in the direction of advancement, (b) performing each of the advancement steps while the tools are mutually retracted, (c~ causing the tools to bend the strip without changing its thickness, during each halt of the strip between successive advancements, and ~d) causing the bends to be such that that last occurring brings the strip into contour conformity with the required constant profile, and such that the bends other than the last, impose on the strip a plurality of transitory profiles each of which, successively in the direction of strip advancement, is less in contour conformity with the original. flatness o~ the strip and more in contour confor-mity with the required constant profile.
The prior process of progressive stamp forming referred to above has proved itself to be highly effective and of considerable co~mercial importance; however, in some respects it, and the apparatus for performing it, are open to objection. ~or example, the use of forming dies : .
. . .
~ 72~
or tools in which one/die moves rectilinearly and normally rela~ive to the other, necessitates halting of the strip during each working blow of the press. This, in turn, requires the strip feed to be effected only while the dies are mutually retracted. If the strip feed is performed manually, not only does time loss occur, but as well the feed steps are rarely regular or uniform. If, on the other hand, the feed is performed mechanically the mechanism is relatively complex, and power consumptiorl high because of ` the unavoidable high-frequency, repetitious positive and negative accelerations.
Another and more general shortcoming of the prior art, concerns the rectilineal reciprocation of the movable die. Presses in which the movement of the movabl~ die is rectilinear necessitate the use oE crank shafts connec~ing rods and the like to convert rotary motion into rectilinear motion and they require fly wheels to store up sufficient energy for even running of the reciprocating masses. More over, guides have to be provided to ensure that the platen or plunger carrying the movable die is restrained against motion in any direction other than the required rectilinear direction. The restraining guides may be in the form of cylindrical bars, vee runways and similar parts which require extensive precise machining so that the guide bars or the like will be truly parallel throughout their full lengths, and this kind o~ accuracy makes the construction of these presses a costly matter. Moreover, the number of :
~ O S~ 7 Z~
relatively movable parts involved gives rise to large bear-ing areas where clearances are required and these clear-ances summate, with the result of undesirable overall slackness of the press arising.
The object of the pres,ent invention is to overcome the indicated disabilities in a very simple way by the provision of press mechanism which is operable to perform a method much the same as that described previously herein (in that paragraph hereof containing parts lettered (a) to (d3), except that by the present invention one of the two press tools, in addition to having a component of rectilin-ear motion relative to the other tool normal to the direc-tion of strip advancement, is also operable with a component of motion in the direction of strip travel; also, the other tool is movable, at least in the direction of strip travel.
By this expedient the dies themselves become the driving elements whereby the strip is fed through the pressing station in the required longitudinal travel direction.
The invention provides~apparatus for forming, from a flat metal strip, a contoured section having a constant profile which prevails throughout the length of the section and is progressively applied to the strip by advancing the strip longitudinally into and through the working ambit of complementary first and second forming dies; said apparatus comprising:
(a) a machine frame;
(b) a pair of carriers which have said forming ~ ~ 5 ~
dies respectively mounted thereon;
(c) means for mounting one of said carriers on said frame so that the die carried thereby is able to move relative to said frame with a first component of reciprocatory mo~ion normal to the second of said dies and with a second component of reciprocatory motion in the direction of strip advancement between said dies;
(d) means for mounting the second of said carriers on said frame so that the die carried by it is movable relative to said frame at least in the said direction of strip advancement; and ~e) drive mechanism whereby at least said first die is driven in exercise of its movability as aforesaid, and so that at all times of operation said dies remain spaced apart at least by a pre-selected minimum distance.
Examples of the invention are illustrated in the drawings herewith.
Fig. 1 is a schematic side elevation of a preferred embodiment of a press mechanism according hereto.
Fig. 2 is a plan projected from Fig. 1.
Fig. 3 virtually repeats a portion o~ Fig. 1 in showing a modified arrangement.
Fig. 4 is a side elevation of press apparatus which is substantially the same as that shown in Figs. 1 and 2, but somewhat more detail~d in being representative of a practical embodiment of the invention.
Fig. 5 is a plan projected from Fig. 4.
- 5 - ~
. :
.. ~ .. , ................. -' : : , ' . .
~ ~ S~ 7 ~
Figs. 6 and 7 are sectional end views taken on lines 6-6 and 7-7 respectively appearing in Figs. 5 and 4.
Referring to Figs. 1 and 2, a machine frame 8 has upright standards 9 furnished with bearings for driving shafts 10 and 11. Shafts 10 and 11 carry eccentrics 12 rotatable within "strap" bearings 13 provided in tool carrier beam 14. Drive shaft lO is drive-connected through suitable worm gearing or the like as indicated at 15 by a motor or the like as indicated at 16; and shaEt 11 is co--driven so that the two eccentrics 12 are at all times similarly angularly ph~sed; that is to say, so that the maximum throw diameters o~ the eccentrics are at all times -parallel.
In Fig. 2, a drive connection between shafts 10 and 11 is shown by sprocket means indicated at 17.
It will be seen that upon rotation of the eccentrics 12 the carrier 14 will execute an orbital motion as indicated by arrows 18 so that the carrier has a component of vertical movement equal to twice the throw of the eccentrics and a component of horizontal motion (also equal to twice the throw of the eccentrics) in the direction of strip advancement as indicated by arrow 19.
A second tool carrier 20 is movable in the direction of strip ad~ancement and, in the embodiment under discussion, in slave relationship repeats the horizontal component of motion of the top carrier 14 by reason of carrier 20 being provided with bearing holes 21 in offset lugs 22 on the . .
~ ~ 5~ 7 ~
carrier 20. These holes 21 slidably receive striker fingers 23 which are fixedly mounted at 24 on the carrier 14.
Carrier 20 may be mounted on the machine frame 8 by way of support rollers as indicated at 25 or it may be furnished with longitudinal runner ribs reciprocal in groove runways or the like on the base 8.
Appropriate complementary progressive stamp forming tools are fixedly mounted on the carriers 14 and 20 for co-operative inter-action in the forming of strip material.
It will be appreciated that the complementary tools and the manner in which they are mounted will be such that notwith-standing their movements they remain parallel and that the distance of their closest mutual approach will be equal to the thickness of the metal strip under progressive stamp formation. With orbital motion as indicated at 18 the direction of strip advancement will be as indicated by arrow 19 and during relatively close approach of the complementary tools they will, while imposing the required transitory ~-profiles on the through-going strip, also act frictionally to grip the strip and advance it step-by-step through the working ambit of the tools.
I~ will be apprecia~ed that the bottom die carrier, according to the present invention, is essentially capable of movement in the direction of strip advancemen~ (as indicated in relation to carrier 20 as shown in Fig. 1) between the dies. It will also be appreciated that the range of this movement of the bottom die (such as 20) is . .
~s~
preferably equal to the component of motion in the direction of s~rip travel of ~he die moun~ed on carrier 14.
With some die formations it may not be necessary for the bottom die to execute the same range of horizontal movement as the top die, and such an arrangement is illustrated in Fig. 3 where the bottom die carrier 20A is.
mounted in exactly the same way as shown in Fig. 1 in respect of carrier 20; but in this instance the carrier 20A, instead of being compelled to operate in slave relationship `to the top carrier 14A, is merely free to do so under frictional influence when the strip being formed is fric-tionally in touch with both of the dies. By this frictional touchJ carrier 20A will be able to move in the direction (19A) of strip advancement, and during those periods when there is no substantial frictional contact of the through-going strip with both of the dies, the carrier 20A may be reverted to its previous location by any suitable means such as the tension spring indicated at 26 having its ends res-pectively anchored to the carrier 20A and also to a bracket 27 fixedly mounted on tne machine frame 8A.
The remaining figures of the drawings (Figs. 4 to 7) illustrate a progressive stamp forming apparatus which in principle of operation, is the same as that diagrammatically shown in Figs.l and 2.
Referring to Figs. 4 to 7, a machine frame 28 has upright standards 29 furnished with bearings for parallel driving shafts 30 and 31. These two shafts carry eccentrics - a~ -:
.-. . . I .. . . . .
~ 5~2~
32 ro~atable within strap bearings 33 provided in tool carrier beam 34. The shafts 30 and 31 are driven by motor 36 through suitable transmission devices indicated by reduction worm gears 37, counter shaft 38 and belt drive 39.
A second tool carrier 40 is movable in the direction of strip advancement and is in slave relationship to the orbitally movable carrier 34 by reason of striker fingers 41 fixedly mounted on carrier 34 and vertically slidable in bearings indicated at 42. The carrier 40 is mounted on the machine frame 28 by way of conventional bearing elements indicated at 43.
By way of example, Fig. 6 shows the carriers 34 and 40 with a complementary pair of progressive stamp forming tools 44 and 45 mounted thereon and having between them a flat strip 46 which is to be progressively formed thereby into a corrugated roadside safe~y rail.
It will be understood that if desired, apparatus according hereto, instead of having one of its die carriers movable mere.ly in the direction of strip advancement, may have both of its tool carriers mounted on eccentrics so that both are orbitally movable concertedly; that is to say, that each is mounted on two eccentrics and is so driven that all four eccentrics are operable so that at all times the top and bottom dies remain parallel, and so that at the point of closest mutual approach (a distance equal to the thickness of the strip to be formed) they both are 9~ _ ', ` ", ' ' ` ' , - ' .. ,'~ '":.. ' ` . ',' ,' ~' ' ~. ' ,' .; ', ' ; " ' ' ' ' ' ' :' , ' " ' i .
~, " .. ' ' ,' . . ... ' ... ,, `',' ' ' '.. , ''' ,,' " , ' ' : ' 7~
moving in the direction of strip advancement.
The foregoing is a description of a preEerred embodiment of the invention which is given here by way of example only.
The invention is not to be t:aken as limited to any of the specific features as described, but comprehends all such variations thereof as come within the scope oE the appended claims.
.,. - 10
This invention relates Lo the formation of contoured metal sections such as chann~els, studs, corrugated cladding sheets, rlbbed decking sheets, highway guard or safety rails and other structural or like elongated elements; from flat strip, sheet or plate metal (hereinafter referred to simply as "strip").
Such metal sections have longitudinally extending shaping such as flutes, corrugations, ~lange, ribs and like formations, which give the section a contoured "non-flat' transverse cross-sectional shape which is known as the profile of the section and prevails constantly throughout the length of the section.
Contoured metal s ctions, when the strip is of relatively light gauge, can be produced by roll forming.
Where the gauge of the metal is too great for roll forming the articles can be formed directly from the strip, in a heavy brake press, in a single blow of the press; but this requires expensive dies and a large and expensive press;
moreover, the length of the articles has to be limi~ed to ~what the press can handleO
An alternative to the prior art ~ethods discussed above is t~o form the contoured metal sections by what is known as "Progressive Stamp Forming". An example o this kind of metal shaping is provided by the invention subject of our British Prior Patent 1,450,235.
Shortly stated, progressive stamp forming as practiced in terms of the said British Patent, consists ~ ~:
in forming, from a flat metal strip, a contoured section having a constant profile which prevails throughout the length of the section; the method comprising:
(a) intermittently advancing the strip longit-udinally into and through the working ambit of a pair of mutually reciprocating press tools so that each advancement step is perpendicular to the direction of tool reciprocation and is a fraction of the length of the tools measured in the direction of advancement, (b) performing each of the advancement steps while the tools are mutually retracted, (c~ causing the tools to bend the strip without changing its thickness, during each halt of the strip between successive advancements, and ~d) causing the bends to be such that that last occurring brings the strip into contour conformity with the required constant profile, and such that the bends other than the last, impose on the strip a plurality of transitory profiles each of which, successively in the direction of strip advancement, is less in contour conformity with the original. flatness o~ the strip and more in contour confor-mity with the required constant profile.
The prior process of progressive stamp forming referred to above has proved itself to be highly effective and of considerable co~mercial importance; however, in some respects it, and the apparatus for performing it, are open to objection. ~or example, the use of forming dies : .
. . .
~ 72~
or tools in which one/die moves rectilinearly and normally rela~ive to the other, necessitates halting of the strip during each working blow of the press. This, in turn, requires the strip feed to be effected only while the dies are mutually retracted. If the strip feed is performed manually, not only does time loss occur, but as well the feed steps are rarely regular or uniform. If, on the other hand, the feed is performed mechanically the mechanism is relatively complex, and power consumptiorl high because of ` the unavoidable high-frequency, repetitious positive and negative accelerations.
Another and more general shortcoming of the prior art, concerns the rectilineal reciprocation of the movable die. Presses in which the movement of the movabl~ die is rectilinear necessitate the use oE crank shafts connec~ing rods and the like to convert rotary motion into rectilinear motion and they require fly wheels to store up sufficient energy for even running of the reciprocating masses. More over, guides have to be provided to ensure that the platen or plunger carrying the movable die is restrained against motion in any direction other than the required rectilinear direction. The restraining guides may be in the form of cylindrical bars, vee runways and similar parts which require extensive precise machining so that the guide bars or the like will be truly parallel throughout their full lengths, and this kind o~ accuracy makes the construction of these presses a costly matter. Moreover, the number of :
~ O S~ 7 Z~
relatively movable parts involved gives rise to large bear-ing areas where clearances are required and these clear-ances summate, with the result of undesirable overall slackness of the press arising.
The object of the pres,ent invention is to overcome the indicated disabilities in a very simple way by the provision of press mechanism which is operable to perform a method much the same as that described previously herein (in that paragraph hereof containing parts lettered (a) to (d3), except that by the present invention one of the two press tools, in addition to having a component of rectilin-ear motion relative to the other tool normal to the direc-tion of strip advancement, is also operable with a component of motion in the direction of strip travel; also, the other tool is movable, at least in the direction of strip travel.
By this expedient the dies themselves become the driving elements whereby the strip is fed through the pressing station in the required longitudinal travel direction.
The invention provides~apparatus for forming, from a flat metal strip, a contoured section having a constant profile which prevails throughout the length of the section and is progressively applied to the strip by advancing the strip longitudinally into and through the working ambit of complementary first and second forming dies; said apparatus comprising:
(a) a machine frame;
(b) a pair of carriers which have said forming ~ ~ 5 ~
dies respectively mounted thereon;
(c) means for mounting one of said carriers on said frame so that the die carried thereby is able to move relative to said frame with a first component of reciprocatory mo~ion normal to the second of said dies and with a second component of reciprocatory motion in the direction of strip advancement between said dies;
(d) means for mounting the second of said carriers on said frame so that the die carried by it is movable relative to said frame at least in the said direction of strip advancement; and ~e) drive mechanism whereby at least said first die is driven in exercise of its movability as aforesaid, and so that at all times of operation said dies remain spaced apart at least by a pre-selected minimum distance.
Examples of the invention are illustrated in the drawings herewith.
Fig. 1 is a schematic side elevation of a preferred embodiment of a press mechanism according hereto.
Fig. 2 is a plan projected from Fig. 1.
Fig. 3 virtually repeats a portion o~ Fig. 1 in showing a modified arrangement.
Fig. 4 is a side elevation of press apparatus which is substantially the same as that shown in Figs. 1 and 2, but somewhat more detail~d in being representative of a practical embodiment of the invention.
Fig. 5 is a plan projected from Fig. 4.
- 5 - ~
. :
.. ~ .. , ................. -' : : , ' . .
~ ~ S~ 7 ~
Figs. 6 and 7 are sectional end views taken on lines 6-6 and 7-7 respectively appearing in Figs. 5 and 4.
Referring to Figs. 1 and 2, a machine frame 8 has upright standards 9 furnished with bearings for driving shafts 10 and 11. Shafts 10 and 11 carry eccentrics 12 rotatable within "strap" bearings 13 provided in tool carrier beam 14. Drive shaft lO is drive-connected through suitable worm gearing or the like as indicated at 15 by a motor or the like as indicated at 16; and shaEt 11 is co--driven so that the two eccentrics 12 are at all times similarly angularly ph~sed; that is to say, so that the maximum throw diameters o~ the eccentrics are at all times -parallel.
In Fig. 2, a drive connection between shafts 10 and 11 is shown by sprocket means indicated at 17.
It will be seen that upon rotation of the eccentrics 12 the carrier 14 will execute an orbital motion as indicated by arrows 18 so that the carrier has a component of vertical movement equal to twice the throw of the eccentrics and a component of horizontal motion (also equal to twice the throw of the eccentrics) in the direction of strip advancement as indicated by arrow 19.
A second tool carrier 20 is movable in the direction of strip ad~ancement and, in the embodiment under discussion, in slave relationship repeats the horizontal component of motion of the top carrier 14 by reason of carrier 20 being provided with bearing holes 21 in offset lugs 22 on the . .
~ ~ 5~ 7 ~
carrier 20. These holes 21 slidably receive striker fingers 23 which are fixedly mounted at 24 on the carrier 14.
Carrier 20 may be mounted on the machine frame 8 by way of support rollers as indicated at 25 or it may be furnished with longitudinal runner ribs reciprocal in groove runways or the like on the base 8.
Appropriate complementary progressive stamp forming tools are fixedly mounted on the carriers 14 and 20 for co-operative inter-action in the forming of strip material.
It will be appreciated that the complementary tools and the manner in which they are mounted will be such that notwith-standing their movements they remain parallel and that the distance of their closest mutual approach will be equal to the thickness of the metal strip under progressive stamp formation. With orbital motion as indicated at 18 the direction of strip advancement will be as indicated by arrow 19 and during relatively close approach of the complementary tools they will, while imposing the required transitory ~-profiles on the through-going strip, also act frictionally to grip the strip and advance it step-by-step through the working ambit of the tools.
I~ will be apprecia~ed that the bottom die carrier, according to the present invention, is essentially capable of movement in the direction of strip advancemen~ (as indicated in relation to carrier 20 as shown in Fig. 1) between the dies. It will also be appreciated that the range of this movement of the bottom die (such as 20) is . .
~s~
preferably equal to the component of motion in the direction of s~rip travel of ~he die moun~ed on carrier 14.
With some die formations it may not be necessary for the bottom die to execute the same range of horizontal movement as the top die, and such an arrangement is illustrated in Fig. 3 where the bottom die carrier 20A is.
mounted in exactly the same way as shown in Fig. 1 in respect of carrier 20; but in this instance the carrier 20A, instead of being compelled to operate in slave relationship `to the top carrier 14A, is merely free to do so under frictional influence when the strip being formed is fric-tionally in touch with both of the dies. By this frictional touchJ carrier 20A will be able to move in the direction (19A) of strip advancement, and during those periods when there is no substantial frictional contact of the through-going strip with both of the dies, the carrier 20A may be reverted to its previous location by any suitable means such as the tension spring indicated at 26 having its ends res-pectively anchored to the carrier 20A and also to a bracket 27 fixedly mounted on tne machine frame 8A.
The remaining figures of the drawings (Figs. 4 to 7) illustrate a progressive stamp forming apparatus which in principle of operation, is the same as that diagrammatically shown in Figs.l and 2.
Referring to Figs. 4 to 7, a machine frame 28 has upright standards 29 furnished with bearings for parallel driving shafts 30 and 31. These two shafts carry eccentrics - a~ -:
.-. . . I .. . . . .
~ 5~2~
32 ro~atable within strap bearings 33 provided in tool carrier beam 34. The shafts 30 and 31 are driven by motor 36 through suitable transmission devices indicated by reduction worm gears 37, counter shaft 38 and belt drive 39.
A second tool carrier 40 is movable in the direction of strip advancement and is in slave relationship to the orbitally movable carrier 34 by reason of striker fingers 41 fixedly mounted on carrier 34 and vertically slidable in bearings indicated at 42. The carrier 40 is mounted on the machine frame 28 by way of conventional bearing elements indicated at 43.
By way of example, Fig. 6 shows the carriers 34 and 40 with a complementary pair of progressive stamp forming tools 44 and 45 mounted thereon and having between them a flat strip 46 which is to be progressively formed thereby into a corrugated roadside safe~y rail.
It will be understood that if desired, apparatus according hereto, instead of having one of its die carriers movable mere.ly in the direction of strip advancement, may have both of its tool carriers mounted on eccentrics so that both are orbitally movable concertedly; that is to say, that each is mounted on two eccentrics and is so driven that all four eccentrics are operable so that at all times the top and bottom dies remain parallel, and so that at the point of closest mutual approach (a distance equal to the thickness of the strip to be formed) they both are 9~ _ ', ` ", ' ' ` ' , - ' .. ,'~ '":.. ' ` . ',' ,' ~' ' ~. ' ,' .; ', ' ; " ' ' ' ' ' ' :' , ' " ' i .
~, " .. ' ' ,' . . ... ' ... ,, `',' ' ' '.. , ''' ,,' " , ' ' : ' 7~
moving in the direction of strip advancement.
The foregoing is a description of a preEerred embodiment of the invention which is given here by way of example only.
The invention is not to be t:aken as limited to any of the specific features as described, but comprehends all such variations thereof as come within the scope oE the appended claims.
.,. - 10
Claims (5)
1. Apparatus for forming, from a flat metal strip, a contoured section having a constant profile which prevails throughout the length of the section and is progressively applied to the strip by advancing the strip longitudinally into and through the working ambit of complementary first and second forming dies; said apparatus comprising:
(a) a machine frame;
(b) a pair of carriers which have said forming dies respectively mounted thereon;
(c) means for mounting one of said carriers on said frame so that the die carried thereby is able to move relative to said frame with a first component of reciproc-atory motion normal to the second of said dies and with a second component of reciprocatory motion in the direction of strip advancement between said dies;
(d) means for mounting the second of said carriers in said frame so that the die carried by it is movable relative to said frame at least in the said direction of strip advancement;
(e) drive mechanism whereby at least said first die is driven in exercise of its movability as aforesaid, and so that at all times of operation said dies remain spaced apart at least by a pre-selected minimum distance.
(a) a machine frame;
(b) a pair of carriers which have said forming dies respectively mounted thereon;
(c) means for mounting one of said carriers on said frame so that the die carried thereby is able to move relative to said frame with a first component of reciproc-atory motion normal to the second of said dies and with a second component of reciprocatory motion in the direction of strip advancement between said dies;
(d) means for mounting the second of said carriers in said frame so that the die carried by it is movable relative to said frame at least in the said direction of strip advancement;
(e) drive mechanism whereby at least said first die is driven in exercise of its movability as aforesaid, and so that at all times of operation said dies remain spaced apart at least by a pre-selected minimum distance.
2. Apparatus according to claim 1 wherein said means for mounting one of said carriers on said frame, comprise a pair of eccentrics whereby the die carried by that carrier is caused to execute circular orbital motion.
3. Apparatus according to claim 2 wherein the means of mounting said second carrier on said frame consist of rollers which permit rectilinear movement of said second carrier.
4. Apparatus according to claim 3 wherein said second carrier is drive-connected to said first carrier by means of striker fingers fixed on said first carrier to project normally therefrom relative to the direction of strip advancement and which are slidable in bearing holes in said second carrier.
5. Apparatus according to claim 1 wherein the means for mounting said first and second carriers for each of carriers consist of a pair of eccentrics whereby both said carriers are able to execute co-ordinated orbital movement such that said carriers remain in parallel disposition during orbital movement thereof and such that the point of closest mutual approach of dies carried by said carriers, is equal to the thickness of the strip to be progressively stamp formed thereby.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPC380775 | 1975-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1051720A true CA1051720A (en) | 1979-04-03 |
Family
ID=3766421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA264,803A Expired CA1051720A (en) | 1975-11-03 | 1976-11-03 | Press mechanism for stamp forming articles from plate material |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5939238B2 (en) |
| CA (1) | CA1051720A (en) |
| DE (1) | DE2649554A1 (en) |
| FR (1) | FR2329369A1 (en) |
| GB (1) | GB1511790A (en) |
| NZ (1) | NZ182456A (en) |
| PH (1) | PH13836A (en) |
| ZA (1) | ZA766368B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60142511A (en) * | 1983-12-29 | 1985-07-27 | 株式会社村田製作所 | Method and device for forming zigzag lead wiring |
| US7451696B2 (en) * | 2005-09-28 | 2008-11-18 | Weyerhaeuser Company | Press unit for a manufactured wood product press |
| EP3360674A1 (en) * | 2017-02-10 | 2018-08-15 | Linde Aktiengesellschaft | Drive device |
| EP3360673A1 (en) * | 2017-02-10 | 2018-08-15 | Linde Aktiengesellschaft | Packing sheet metal bending device |
-
1976
- 1976-10-25 ZA ZA766368A patent/ZA766368B/en unknown
- 1976-10-26 GB GB44510/76A patent/GB1511790A/en not_active Expired
- 1976-10-28 NZ NZ182456A patent/NZ182456A/en unknown
- 1976-10-29 DE DE19762649554 patent/DE2649554A1/en not_active Withdrawn
- 1976-11-02 FR FR7632965A patent/FR2329369A1/en active Granted
- 1976-11-03 CA CA264,803A patent/CA1051720A/en not_active Expired
- 1976-11-03 PH PH19085A patent/PH13836A/en unknown
- 1976-11-04 JP JP51131828A patent/JPS5939238B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2329369B3 (en) | 1979-07-13 |
| ZA766368B (en) | 1977-10-26 |
| JPS5274964A (en) | 1977-06-23 |
| PH13836A (en) | 1980-10-16 |
| JPS5939238B2 (en) | 1984-09-21 |
| DE2649554A1 (en) | 1977-05-12 |
| FR2329369A1 (en) | 1977-05-27 |
| NZ182456A (en) | 1979-01-11 |
| GB1511790A (en) | 1978-05-24 |
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