EP0186909A2 - Apparatus for adjusting tool length of bending machine - Google Patents
Apparatus for adjusting tool length of bending machine Download PDFInfo
- Publication number
- EP0186909A2 EP0186909A2 EP85116595A EP85116595A EP0186909A2 EP 0186909 A2 EP0186909 A2 EP 0186909A2 EP 85116595 A EP85116595 A EP 85116595A EP 85116595 A EP85116595 A EP 85116595A EP 0186909 A2 EP0186909 A2 EP 0186909A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- dies
- die
- central
- ram
- split
- 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.)
- Granted
Links
Images
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
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
- B21D5/042—With a rotational movement of the bending blade
-
- 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
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
-
- 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
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
-
- 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
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
- B21D5/0218—Length adjustment of the punch
-
- 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
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
-
- 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
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
- B21D5/047—Length adjustment of the clamping means
Definitions
- This invention relates to an apparatus for adjusting the tool length of a bending machine in which the effective length of an upper tool can be exchanged to the desired bending length according to the bending width of a sheet metal plate.
- Metal plates having each edge of four sides of a rectangular sheet metal bent by at least one or two times are used for cabinets, display cases, bending machines, refrigerators, freezers, air conditioners, computer units, various office machines, etc.
- wiping benders, folding machines or press brakes are used to bend each side edge of a sheet metal previously cut into a quadrilateral.
- the edge of one short side of the sheet metal is bent by two steps (short side bending) and then, after the sheet metal is turned 180° on a handling table, the edge of the other short side is bent.
- the sheet metal is turned 90° and the edge of one long side is bent (long side bending) by a clamp die or punch set to the bending width adjusted to the inside of the short side bending. Further, the sheet metal is turned 180° and the other long side is bent so that the rectangular metal plate having the four sides bent in the U-shaped form is obtained from the first step bending and the following second step bending.
- the upper corner dies should avoid the interference with this rise to approach the sheet metal. Furthermore, when the die is withdrawn after the U-shaped bending of the long side edge, the upper corner die should not interfere with said rise.
- an openable die or rotary die
- a clearance is provided in an edge portion of the upper corner die body to avoid the contact with the pivotal portion of the openable die.
- this clearance provides a cut-out portion of the edge line of the upper die, the bending line of the sheet metal has irregularities on the clearance portion so that accurate bending form cannot be obtained.
- An object of the present invention is to provide an apparatus for adjusting the tool length of a bending machine in which the tool length can be changed easily and quickly.
- a further object of the present invention is to provide an upper bending die in which the edge lines of the lower portion of the upper corner die body and the openable die are interconnected continuously.
- the present invention provides an apparatus for adjusting the tool length of a bending machine which comprises a mechanism for reversing the upper split die and mounted on the rear side of a ram to make the whole apparatus compact without mounting elements for exchanging the tool length in front of a machine and render the exchanging operation accurate.
- the present invention comprises a groove formed in the lower portion of the ram to mount the upper die, a lower die provided on the upper surface of a front plate, a pair of central dies and a pair of upper corner dies slidably inserted in said groove, a drive mechanism for sliding the upper corner dies to the longitudinal symmetrical positions on the lower portion of the ram, a pivotable shaft disposed on the back of said central and upper corner dies, a plurality of upper split dies wedged to the shaft, reversed when the shaft is pivoted and selectively inserted between said central die and upper corner die, a wedge releasing mechanism for releasing the upper split die from the wedged condition and putting it in the upper corner die to hold the corresponding upper die under the non-reversing condition in pivoting the shaft, a plurality of thin upper dies supported by the shaft in the back of the central die and reversed in pivoting the shaft to be inserted between the central die and a mechanism for selecting the number of the thin upper dies to be reversed.
- the present invention In working the present invention, for example, are arranged two central dies having 75mm thickness, 21 upper split dies having 50mm width each outside the central die, the upper corner dies having 100mm width each at the left and right side, and further 10 thin upper dies having 5mm width at the central portion.
- the total tool length reaches 2,500mm, the maximum length.
- the upper die length has each 2.5mm pitch at both ends, assuming the thin upper die is 5mm thick, so that the change in the work length within said extent can be substantially coped with.
- the operation of said drive mechanism, reversing mechanism, etc. permits the bending operation of differently sized sheet metal to be flexibly carried out by employing the NC control.
- the upper corner dies at both ends of the upper split die group are improved to make the bending operation of the four sides of sheet metal advantageous.
- the upper corner die according to the present invention consists of a main body having same type and openable dies pivotably supported relative to the main body.
- the upper corner die is provided inside the lower portion with a pin supported link which supports the openable die on the end.
- a rod erected on the central portion of the upper surface of the openable die is inserted loosely into a guide hole in said main body. Since the upper split die adjacent the upper corner die and the openable die are formed with continuous edge lines connected closely to each other without providing any clearance between the edge portions, accurate bending can be provided with respect to all bending lines. Further, since the openable dies, after descending vertically along a central rod, are inverted respectively inside at both end positions of the upper die row by the ascend of the rom, they can be smoothly withdrawn from the sheet metal.
- the present invention can be applied not only to press brakes, but also to bending machines such as folding machine, wiping bender, etc.
- reference numeral 10 designates left and right frames
- 11 is a front plate stretched in front of the frames
- 12 press cylinders mounted on the upper ends of the frames
- 13 a ram moved vertically to the front plate 11 by the actuation of the press cylinders
- Reference numeral 14 designates a bed on the upper surface of the front plate, 15 a slide member provided on the bed 14, 16 a lower die, 17 V-shaped groove formed in the lower die 16,18 a back gauge, 19 a T-shaped groove formed in the lower end of the ram and 20 a group of upper dies (punch).
- the group of upper dies 20 are constituted from a pair of left and right central dies lA,lB slidable longitudinally of the tool length, a pair of left and right upper corner dies 7A,7B slidably similarly, a plurality of upper split dies 2A to 6A and 2B to 6B which are inserted between the central die and the upper corner die and a plurality of thin upper dies 8 which are inserted between the left and right central dies. Said upper split dies and the thin upper dies cannot slide and are supported by the shaft to be reversed rearward and adjusted to the change in the tool length.
- the central dies lA,lB have the upper portion inserted into a groove 19 in the lower end of the ram to be slidably supported thereby.
- Brackets 21,22 extend to the back of the central dies to hold the thin upper die group 8 and spline cylinder 23,24 having a split respectively, as will be later described.
- the left and right upper corner dies 7A,7B have the upper portions inserted into the groove 19, while being supported slidably by a drive mechanism 30.
- the upper corner die is formed in the interior with a female screw 31 in which it is screwed a left and right threaded rod 32 extending through the groove 19 so that the left and right upper corner dies are moved in the opposite directions to each other by driving a rotary unit 33 on the rod end.
- the upper corner die has an openable die 72 pivotably connected to the upper corner die body, the constitution and features of the openable die will be described later.
- a pair of left and right shafts 35,36 are disposed on the back of said central dies lA,lB and provided near the ends with a reversing drive unit 34 such as rack pinion or gear mechanism to be supportably rotated 180°.
- the shafts are provided on the ends with cylinders 38,39 operated when the number of the thin upper dies 8 to be reversed is selected and further on an end of one cylinder with a shift cylinder 40 for centering the whole upper die group when the odd number of the upper split dies are used.
- cylinders 41,42 for fastening the upper split die group reversely ascending.
- the upper split dies 2A,2B ---6A,6B are constituted respectively from body portions 57 and die portions 58, and shafts 35,36 are inserted into a hole 45 laterally provided in a body portion 57 and provided with a longitudinal key way 46 on a portion supporting the whole upper split dies (Figs. 5 and 10).
- a movable body 51 urged normally to advance by a spring 48.
- a wedge 50 is provided which is bent and inserted into the key way 46 in said shafts 35,36 from the upper end of this movable body 51.
- the upper corner dies 7A,7B have the tool length of integral times that of the upper split dies (two times in the drawing) and as shown in Figs. 5 and 10, the upper portion has further the tool length plus the length of one upper split die (one corresponding to 3 upper split dies in the drawing).
- a wedge releasing mechanism 55 consisting of a piston 53 and a cylinder 54 to release said upper split dies from the wedge and hold said upper split dies under the non-reversing condition in pivoting the shafts 35,36. As shown in Figs.
- the thin upper dies 8 are provided respectively with a spline hole 26 meshing with a spline cylinder and supported on a mechanism 25 for selecting the number of the upper split dies to be reversed.
- This mechanism 25 consists of spline cylinders 23,24 having splits near the position in which the shafts 35,36 are butted against each other and the cylinders 33,39 for shifting each shaft outward, and one spline cylinder 23 is secured fixedly to an end of one shaft 36 by the use of a pin 27 to reverse the thin upper die 8 engaging the corresponding spline cylinder 23 in rotating the shaft.
- the other spline cylinder 24 is secured fixedly to the bracket 22 for one central die to support the thin upper die 8 engaging the corresponding spline cylinder 24 under the non-reversing condition.
- the upper corner dies are arranged left and right of the upper split die row and moved in the opposite directions to each other by the left and right reversely threaded rod 32.
- the upper corner dies 7A,7B consist of main bodies 71 having the height equal about a half of that of adjacent upper split die, and openable dies 72 mounted on the lower portion of the main body.
- the T-shaped portion formed on the upper portion of the main body 71 is inserted into a T-shaped groove 19 in the lower portion of the ram 13 to be screwed onto the screw rod 32 extending through the T-shaped groove 19.
- Said openable die 72 is mounted removably on the main body through a link 75 provided on the lower portion of the main body 71. That is, a bracket 76 is suspended from the lower corner of the main body 71 at the side contacting the upper split die, and a pin 77 extends through this bracket 76 in the direction orthogonal to the bending line to mount said link 75, on the end of which is supported the openable die 72 by the use of a pin 78.
- the openable die 72 has a recess 79 to avoid the interference with a rise 95 at the work end side as viewed from the front and is formed with a cavity 80 at the side adjacent the upper split die.
- the cavity 80 has a side oblique surface 82 abutting against an end face 81 of the adjacent upper split die in withdrawing the dies to prevent the upper split die from further pivoting.
- a side oblique surface 83 extending from the lower end of the side oblique surface 82 toward the edge of said upper die is provided to form a vertical flat surface 84 contacting closely to said end face 81 of the upper split die in the lower end of the side oblique surface.
- a rod 88 with a head 87 is planted into the upper surface of the openable die 72.
- a guide hole 89 corresponding to the rod 88 is provided in the main body 71.
- Fig. 10 shows the tool length of 850 mm using all dies except for the thin upper dies 8
- Fig. 11 shows the tool length of 350 mm with the central and upper corner dies.
- the rotary unit 33 is driven by an NC control to rotate the screw rod 30 and move left and right the central dies lA,lB each by 150mm.
- the piston 53 of the wedge releasing mechanism for the upper corner dies 7A,7B is moved to the position of each movable body 51 of wedge for the upper split dies 3A to 5A, 3B to 5B.
- the cylinder 54 is operated to move left the movable body 51 and remove the wedge 50 at the upper end from the key way 46 by the extension of the piston 53 as shown in Fig. 6.
- the ram 13 is lowered to bend the proximity of edge of the sheet metal 90 and bend the long and short sides for providing a completed product as shown .in Fig. 18.
- the reversing drive unit 34 is driven in the opposite direction to the previous one to reverse simultaneously five thin upper dies 8 inserted between the central dies lA,lB and the upper split dies 2A,2B left wedged in the shafts 35,36 to the condition shown in Fig. 12.
- the upper corner dies 7A,7B before and after the bending are operated as follows;
- the edges 86 of upper split die touch the work, as shown by the solid line in the same drawing, the flat surface 84 of the openable die contact closely the end face 81 of the adjacent upper split die 6A or 6B, while the edges 85,86 are arranged on the same line. Since the edge line does not have any gaps, it can withstand a large load so that the sheet metal can be bent along a clear even bending line by pressing it under such condition.
- the rod 88 guided by the hole 89 is regulated to descend for example 3 to 5mm vertically at the beginning of the pivoting. Since the flat surface 84 of the openable die is moved out of the end face 81 by that vertical descend, the openable die is thereafter pivoted about the pin 77 and the side oblique surface 82 abuts against the end face of the upper split die and stops so that it can return to the condition shown by the chain line and be withdrawn without interfering with the rise 95 of the work.
- Figs. 14 and 15 are sectional and front views showing a modification of the upper corner die.
- a main body 101 is provided on the lower corner with the bracket 76 for supporting the goose-neck-shaped openable die 102 through a link 103.
- An arm 104 is provided upward from the pivotal fulcrum side of the link 103, while an air cylinder 105 parallel to the edge line is provided in the main body 101 and an end of a piston 106 inserted into the cylinder 105 is disposed to abut against an end of said arm 104.
- pressurized air is supplied from an approach port 107 of the cylinder to move the piston 106 right, hold the link 103 horizontally and make the openable die 102 contact closely the main body 101 and the upper split die.
- air in the cylinder 105 is vented to slant the openable die 102 by its own weight and avoid the interference with the rise 95 of the sheet metal similarly to the previously mentioned embodiment.
- the edge line is formed without any gaps between the openable die and adjacent upper split dies.
- Fig. 16 shows a further modification of the upper corner die applied to a folding machine according to the present invention.
- This upper corner die is almost same as that in Figs. 14 and 15.
- the die itself applies to a clamp die 110 of the folding machine which is opposed to a lower die 111 and lowered by the press cylinder of the ram to clamp the sheet metal 90 and bend the sheet metal edge by pivoting a rotary die 112 in the direction of arrow.
- the upper split die, central die and thin upper die have the same shape as the clamp die 110, the illustration of them is omitted.
- the operational effect of the upper corner die is same as that of previously mentioned embodiment.
- the apparatus for adjusting the tool length of a bending machine since the apparatus for adjusting the tool length of a bending machine according to the present invention has the reversible upper split dies together with the reversible thin upper dies for fine adjustment of the tool length, it can sufficiently cope with the change of the sheet metal length and easily accurately carry out the working to bend four sides.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Braking Arrangements (AREA)
Abstract
Description
- This invention relates to an apparatus for adjusting the tool length of a bending machine in which the effective length of an upper tool can be exchanged to the desired bending length according to the bending width of a sheet metal plate.
- Metal plates having each edge of four sides of a rectangular sheet metal bent by at least one or two times are used for cabinets, display cases, bending machines, refrigerators, freezers, air conditioners, computer units, various office machines, etc. To prepare such plates, wiping benders, folding machines or press brakes are used to bend each side edge of a sheet metal previously cut into a quadrilateral. For example, in order to bend each side edge in the U-shaped form, the edge of one short side of the sheet metal is bent by two steps (short side bending) and then, after the sheet metal is turned 180° on a handling table, the edge of the other short side is bent. Next, the sheet metal is turned 90° and the edge of one long side is bent (long side bending) by a clamp die or punch set to the bending width adjusted to the inside of the short side bending. Further, the sheet metal is turned 180° and the other long side is bent so that the rectangular metal plate having the four sides bent in the U-shaped form is obtained from the first step bending and the following second step bending.
- In the above working, when the long side of the metal is bent, rising portions are produced by bending the previously bent short side, so that the upper die should have the length of the long side obtained by subtracting the thickness corresponding to two sheets and avoid the interference with the rising side of the short side. Thus, a plurality of the upper dies having different die widths are prepared and every time the sheet width is changed, the die is interchanged manually. To overcome the defects caused by such manual operation, an apparatus for adjusting the tool length has been developed in which the upper die can be split while the upper split dies having different die widths are combined such that unnecessary upper dies are retreated or inverted according to the sheet metal length to be adjusted to a desired upper die length. However, since the die length is only stepwise changed by simply putting in and out the upper split dies, it cannot cope with the bending work for various lengths of works, presenting problems of complicating control for changing the die length.
- Also, as above mentioned, when the respective side edges of the metal plate are bent in the U-shaped form, since the edges of the short sides are previously bent into the rise having the U-shaped section, the upper corner dies should avoid the interference with this rise to approach the sheet metal. Furthermore, when the die is withdrawn after the U-shaped bending of the long side edge, the upper corner die should not interfere with said rise. Thus, normally, an openable die (or rotary die) is mounted on the upper corner dies disposed on both ends of the upper split dies by the use of a pin. And to pivot this openable die without any troubles, a clearance is provided in an edge portion of the upper corner die body to avoid the contact with the pivotal portion of the openable die. However, since this clearance provides a cut-out portion of the edge line of the upper die, the bending line of the sheet metal has irregularities on the clearance portion so that accurate bending form cannot be obtained.
- An object of the present invention is to provide an apparatus for adjusting the tool length of a bending machine in which the tool length can be changed easily and quickly.
- A further object of the present invention is to provide an upper bending die in which the edge lines of the lower portion of the upper corner die body and the openable die are interconnected continuously.
- The present invention provides an apparatus for adjusting the tool length of a bending machine which comprises a mechanism for reversing the upper split die and mounted on the rear side of a ram to make the whole apparatus compact without mounting elements for exchanging the tool length in front of a machine and render the exchanging operation accurate. That is, the present invention comprises a groove formed in the lower portion of the ram to mount the upper die, a lower die provided on the upper surface of a front plate, a pair of central dies and a pair of upper corner dies slidably inserted in said groove, a drive mechanism for sliding the upper corner dies to the longitudinal symmetrical positions on the lower portion of the ram, a pivotable shaft disposed on the back of said central and upper corner dies, a plurality of upper split dies wedged to the shaft, reversed when the shaft is pivoted and selectively inserted between said central die and upper corner die, a wedge releasing mechanism for releasing the upper split die from the wedged condition and putting it in the upper corner die to hold the corresponding upper die under the non-reversing condition in pivoting the shaft, a plurality of thin upper dies supported by the shaft in the back of the central die and reversed in pivoting the shaft to be inserted between the central die and a mechanism for selecting the number of the thin upper dies to be reversed.
- In working the present invention, for example, are arranged two central dies having 75mm thickness, 21 upper split dies having 50mm width each outside the central die, the upper corner dies having 100mm width each at the left and right side, and further 10 thin upper dies having 5mm width at the central portion. When all these dies are used, the total tool length reaches 2,500mm, the maximum length. By leaving the central dies and the upper corner dies as they are and selecting the combination of the segments of left and right upper split dies and thin upper dies to be used can be freely adjusted the tool length between the maximum to the minimum by 100mm or 5mm pitch. Further, since the thickness of the sheet metal is normally 1 to 3mm, the upper die length has each 2.5mm pitch at both ends, assuming the thin upper die is 5mm thick, so that the change in the work length within said extent can be substantially coped with. Also, the operation of said drive mechanism, reversing mechanism, etc. permits the bending operation of differently sized sheet metal to be flexibly carried out by employing the NC control.
- Also, in the present invention, the upper corner dies at both ends of the upper split die group are improved to make the bending operation of the four sides of sheet metal advantageous. Namely, the upper corner die according to the present invention consists of a main body having same type and openable dies pivotably supported relative to the main body. The upper corner die is provided inside the lower portion with a pin supported link which supports the openable die on the end. A rod erected on the central portion of the upper surface of the openable die is inserted loosely into a guide hole in said main body. Since the upper split die adjacent the upper corner die and the openable die are formed with continuous edge lines connected closely to each other without providing any clearance between the edge portions, accurate bending can be provided with respect to all bending lines. Further, since the openable dies, after descending vertically along a central rod, are inverted respectively inside at both end positions of the upper die row by the ascend of the rom, they can be smoothly withdrawn from the sheet metal.
- The present invention can be applied not only to press brakes, but also to bending machines such as folding machine, wiping bender, etc.
- A preferred embodiment of the invention - illustrative of the bent mode in which applicants have contemplated applying the principles - is set forth in the following description and shown in the drawings and is particularly and distinctly pointed out and set forth in the appended claims.
- Fig. 1 is a perspective view showing a bending machine provided with an apparatus for adjusting the tool length according to the present invention;
- Fig. 2 is an enlarged front view showing the upper die portion in Fig. 1;
- Fig. 3 is a side view showing same in Fig. 2;
- Fig. 4 is an enlarged sectional view taken along the line VI-VI in Fig. 2;
- Fig. 5 is a cross-sectional view taken along the line V-V in Fig. 4;
- Fig. 6 is a sectional view showing the condition of the upper split die having a wedge removed in Fig. 4;
- Fig. 7 is a sectional view showing the condition of the upper split die reversed from the condition in Fig. 6;
- Fig. 8 is a sectional view taken along the line VIII-VIII in Fig. 5;
- Fig. 9 is a front view showing an upper corner die according to the present invention;
- Figs. 10 to 13 are schematic front views showing an apparatus operated for changing the tool length;
- Fig. 14 is a sectional view of an embodiment of the present invention applied to a goose-neck-shaped press brake;
- Fig. 15 is a front view showing the upper corner die of the apparatus shown in Fig. 14;
- Fig. 16 is a sectional view showing an embodiment of the present invention applied to a folding machine.
- Fig. 17 is a perspective view showing a sheet metal; and
- Fig. 18 is a perspective view showing a finished bent product.
- Referring now to the drawings, a preferred embodiment of the present invention is illustrated therein and
reference numeral 10 designates left and right frames, 11 is a front plate stretched in front of the frames, 12 press cylinders mounted on the upper ends of the frames, 13 a ram moved vertically to the front plate 11 by the actuation of thepress cylinders 12.Reference numeral 14 designates a bed on the upper surface of the front plate, 15 a slide member provided on thebed 14, 16 a lower die, 17 V-shaped groove formed in thelower die 16,18 a back gauge, 19 a T-shaped groove formed in the lower end of the ram and 20 a group of upper dies (punch). - As shown in Figs. 2 to 5, the group of
upper dies 20 are constituted from a pair of left and right central dies lA,lB slidable longitudinally of the tool length, a pair of left and right upper corner dies 7A,7B slidably similarly, a plurality ofupper split dies 2A to 6A and 2B to 6B which are inserted between the central die and the upper corner die and a plurality of thinupper dies 8 which are inserted between the left and right central dies. Said upper split dies and the thin upper dies cannot slide and are supported by the shaft to be reversed rearward and adjusted to the change in the tool length. - As shown in Figs. 5 and 8, the central dies lA,lB have the upper portion inserted into a
groove 19 in the lower end of the ram to be slidably supported thereby.Brackets upper die group 8 andspline cylinder groove 19, while being supported slidably by adrive mechanism 30. That is, the upper corner die is formed in the interior with afemale screw 31 in which it is screwed a left and right threadedrod 32 extending through thegroove 19 so that the left and right upper corner dies are moved in the opposite directions to each other by driving arotary unit 33 on the rod end. Further, while the upper corner die has anopenable die 72 pivotably connected to the upper corner die body, the constitution and features of the openable die will be described later. - As shown in Figs. 3 and 10, a pair of left and
right shafts drive unit 34 such as rack pinion or gear mechanism to be supportably rotated 180°. Also, the shafts are provided on the ends withcylinders upper dies 8 to be reversed is selected and further on an end of one cylinder with ashift cylinder 40 for centering the whole upper die group when the odd number of the upper split dies are used. Further, on the way of theshafts cylinders - As shown in Fig. 6, the upper split dies 2A,2B ---6A,6B are constituted respectively from
body portions 57 and dieportions 58, andshafts hole 45 laterally provided in abody portion 57 and provided with a longitudinalkey way 46 on a portion supporting the whole upper split dies (Figs. 5 and 10). To the lower portion of thebody portion 57 is attached amovable body 51 urged normally to advance by aspring 48. Awedge 50 is provided which is bent and inserted into thekey way 46 in saidshafts movable body 51. - On the other hand, the upper corner dies 7A,7B have the tool length of integral times that of the upper split dies (two times in the drawing) and as shown in Figs. 5 and 10, the upper portion has further the tool length plus the length of one upper split die (one corresponding to 3 upper split dies in the drawing). In the upper corner dies are provided a
wedge releasing mechanism 55 consisting of apiston 53 and acylinder 54 to release said upper split dies from the wedge and hold said upper split dies under the non-reversing condition in pivoting theshafts spline hole 26 meshing with a spline cylinder and supported on amechanism 25 for selecting the number of the upper split dies to be reversed. Thismechanism 25 consists ofspline cylinders shafts cylinders spline cylinder 23 is secured fixedly to an end of oneshaft 36 by the use of apin 27 to reverse the thinupper die 8 engaging thecorresponding spline cylinder 23 in rotating the shaft. Theother spline cylinder 24 is secured fixedly to thebracket 22 for one central die to support the thinupper die 8 engaging thecorresponding spline cylinder 24 under the non-reversing condition. - Now will be detailed the upper corner dies 7A,7B in the present invention.
- The upper corner dies are arranged left and right of the upper split die row and moved in the opposite directions to each other by the left and right reversely threaded
rod 32. As shown in Figs. 2,4,5,9 and 10, the upper corner dies 7A,7B consist ofmain bodies 71 having the height equal about a half of that of adjacent upper split die, and openable dies 72 mounted on the lower portion of the main body. The T-shaped portion formed on the upper portion of themain body 71 is inserted into a T-shapedgroove 19 in the lower portion of theram 13 to be screwed onto thescrew rod 32 extending through the T-shapedgroove 19. - Said openable die 72 is mounted removably on the main body through a
link 75 provided on the lower portion of themain body 71. That is, abracket 76 is suspended from the lower corner of themain body 71 at the side contacting the upper split die, and apin 77 extends through thisbracket 76 in the direction orthogonal to the bending line to mount saidlink 75, on the end of which is supported the openable die 72 by the use of apin 78. As shown in Fig. 9, the openable die 72 has arecess 79 to avoid the interference with arise 95 at the work end side as viewed from the front and is formed with acavity 80 at the side adjacent the upper split die. Thecavity 80 has a sideoblique surface 82 abutting against anend face 81 of the adjacent upper split die in withdrawing the dies to prevent the upper split die from further pivoting. Futhermore, a sideoblique surface 83 extending from the lower end of the sideoblique surface 82 toward the edge of said upper die is provided to form a verticalflat surface 84 contacting closely to said end face 81 of the upper split die in the lower end of the side oblique surface. When the openable die contacts closely the upper split die, any clearances are not produced betweenedges flat surface 84 to hold a continuous edge line at the same level. Further, arod 88 with ahead 87 is planted into the upper surface of theopenable die 72. Aguide hole 89 corresponding to therod 88 is provided in themain body 71. When theopenable die 72 begins to be opened, therod 88 descends vertically through theguide hole 89 before the link pivots about the fulcrum, and after saidflat surface 84 is spaced from the adjacent upper split die, the link is allowed to pivot about the fulcrum and brought down to the position shown by the chain line in Fig. 9. - Next will be described the operation of said apparatus with reference to Figs. 10 to 13.
- Four side edges of a
sheet metal 90 which is cut previously into an approximately rectangular shape as shown in Fig. 17 are bent into the U-shaped form as follows; First, the edge of oneshort side 91 is bent in two steps into the U-shaped form and then the work is turned 180° in a plane on a handling table (not shown). The othershort side 92 of the metal is thus bent similarly. In the bending of these short sides, the adjustment of tool length is not needed and the length of the upper die larger than that of the short side will do. Next, the work is turned 90° and the edge of onelong side 93 is bent. The work is further then turned 180°, and other long side is bent. As a result, as shown in Fig. 18, a product of rectangular shape having a width W and a length L with the four sides bent in a U shape by the first bends E and the second bends H, is obtained. In the above working, since theU-shaped rise 95 is produced by bending the short said edge, the length of the upper die should be adjusted in bending the long side. Also, the upper'corner dies 7A,7B should avoid the interference with therise 95 in approaching the work and in withdrawing the dies after bending the long sides. The present invention can cope with all these requirements. - Now, to simplify the description, the present invention will be described with reference to the change of work length (length of long side) corresponding to two central dies having 75mm width, 5 x 2 upper split dies having 50 mm width, 2 upper corner dies having 100 mm width and 10 thin upper dies having 5mm width.
- Fig. 10 shows the tool length of 850 mm using all dies except for the thin upper dies 8, and Fig. 11 shows the tool length of 350 mm with the central and upper corner dies.
- Now will be described the case in which 350mm tool length shown in Fig. 11 is changed for 475mm one. First, the
rotary unit 33 is driven by an NC control to rotate thescrew rod 30 and move left and right the central dies lA,lB each by 150mm. By this movement is moved thepiston 53 of the wedge releasing mechanism for the upper corner dies 7A,7B to the position of eachmovable body 51 of wedge for the upper split dies 3A to 5A, 3B to 5B. Here, thecylinder 54 is operated to move left themovable body 51 and remove thewedge 50 at the upper end from thekey way 46 by the extension of thepiston 53 as shown in Fig. 6. When under this condition theshafts cylinder drive unit 34 is driven to pivot theshafts mechanism 55 are rotated 180° so that the 475mm tool length can be set as shown in Fig. 13. - Thereafter, the
ram 13 is lowered to bend the proximity of edge of thesheet metal 90 and bend the long and short sides for providing a completed product as shown .in Fig. 18. After the completion of bending, when the tool length is again changed, the reversingdrive unit 34 is driven in the opposite direction to the previous one to reverse simultaneously five thin upper dies 8 inserted between the central dies lA,lB and the upper split dies 2A,2B left wedged in theshafts rotary unit 3 is reversely rotated and the left and right threadedscrew rod 30 is rotated to return the upper corner dies 7A,7B to the original positions, thepiston 53 is retreated to insert thewedges 50 of all upper split dies into thekey way 46 and reverse theshafts - The upper corner dies 7A,7B before and after the bending are operated as follows;
- As shown in Figs. 2 and 9, until the openable die 72 of the upper corner die descends from the ram lifting position and touches the
sheet metal 90, it is supported and brought down inward slantly by thelink 75 as shown by the chain line in said drawings. When theram 13 is lowered as it is, it does not abut against therise 95 of sheet metal. When theram 13 is further lowered, the openable die 72 touches the work before the upper split dies 2A,2B --- 6A,6B touch same and begins to pivot clockwise in Fig. 9. Then, when theedges 86 of upper split die touch the work, as shown by the solid line in the same drawing, theflat surface 84 of the openable die contact closely theend face 81 of the adjacent upper split die 6A or 6B, while theedges - After the completion of bending, when the
ram 13 is raised, while the openable die 72 hung by thelink 75 tends to pivot about thepin 77 with its own weight, therod 88 guided by thehole 89 is regulated to descend for example 3 to 5mm vertically at the beginning of the pivoting. Since theflat surface 84 of the openable die is moved out of theend face 81 by that vertical descend, the openable die is thereafter pivoted about thepin 77 and the sideoblique surface 82 abuts against the end face of the upper split die and stops so that it can return to the condition shown by the chain line and be withdrawn without interfering with therise 95 of the work. - Figs. 14 and 15 are sectional and front views showing a modification of the upper corner die. In this example, applied to the goose-neck-shaped press brake, same parts as those in Fig. 9 are designated by the same symbols. As shown in Figs. 14 and 15, a
main body 101 is provided on the lower corner with thebracket 76 for supporting the goose-neck-shaped openable die 102 through alink 103. Anarm 104 is provided upward from the pivotal fulcrum side of thelink 103, while anair cylinder 105 parallel to the edge line is provided in themain body 101 and an end of apiston 106 inserted into thecylinder 105 is disposed to abut against an end of saidarm 104. Before entering the bending process, pressurized air is supplied from anapproach port 107 of the cylinder to move thepiston 106 right, hold thelink 103 horizontally and make the openable die 102 contact closely themain body 101 and the upper split die. Before and after the bending process, air in thecylinder 105 is vented to slant the openable die 102 by its own weight and avoid the interference with therise 95 of the sheet metal similarly to the previously mentioned embodiment. Also, similarly, the edge line is formed without any gaps between the openable die and adjacent upper split dies. - Fig. 16 shows a further modification of the upper corner die applied to a folding machine according to the present invention. This upper corner die is almost same as that in Figs. 14 and 15. The die itself applies to a clamp die 110 of the folding machine which is opposed to a lower die 111 and lowered by the press cylinder of the ram to clamp the
sheet metal 90 and bend the sheet metal edge by pivoting arotary die 112 in the direction of arrow. In this case, while all of the upper split die, central die and thin upper die have the same shape as the clamp die 110, the illustration of them is omitted. The operational effect of the upper corner die is same as that of previously mentioned embodiment. - As above mentioned, since the apparatus for adjusting the tool length of a bending machine according to the present invention has the reversible upper split dies together with the reversible thin upper dies for fine adjustment of the tool length, it can sufficiently cope with the change of the sheet metal length and easily accurately carry out the working to bend four sides.
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88120283T ATE88927T1 (en) | 1984-12-29 | 1985-12-27 | PRESS BRAKE. |
AT85116595T ATE54078T1 (en) | 1984-12-29 | 1985-12-27 | DEVICE FOR ADJUSTING THE TOOL LENGTH OF BENDING MACHINES. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59281519A JPS61159224A (en) | 1984-12-29 | 1984-12-29 | Die length changing device of press brake |
JP281519/84 | 1984-12-29 | ||
JP279224/85 | 1985-12-13 | ||
JP60279224A JPS62142025A (en) | 1985-12-13 | 1985-12-13 | Upper corner die for folding machine |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88120283.2 Division-Into | 1988-12-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0186909A2 true EP0186909A2 (en) | 1986-07-09 |
EP0186909A3 EP0186909A3 (en) | 1987-03-25 |
EP0186909B1 EP0186909B1 (en) | 1990-06-27 |
Family
ID=26553227
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85116595A Expired - Lifetime EP0186909B1 (en) | 1984-12-29 | 1985-12-27 | Apparatus for adjusting tool length of bending machine |
EP88120283A Expired - Lifetime EP0310145B1 (en) | 1984-12-29 | 1985-12-27 | Bending machine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88120283A Expired - Lifetime EP0310145B1 (en) | 1984-12-29 | 1985-12-27 | Bending machine |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP0186909B1 (en) |
KR (1) | KR890004036B1 (en) |
AT (1) | ATE54078T1 (en) |
DE (2) | DE3587327T2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT385689B (en) * | 1986-08-14 | 1988-05-10 | Voest Alpine Ag | DEVICE FOR BENDING SHEET CUTTINGS |
AT385688B (en) * | 1986-08-14 | 1988-05-10 | Voest Alpine Ag | DEVICE FOR BENDING SHEET CUTTINGS |
AT385690B (en) * | 1986-08-28 | 1988-05-10 | Voest Alpine Ag | Device for folding sheet metal blanks |
EP0274159A2 (en) * | 1987-01-09 | 1988-07-13 | SALVAGNINI S.p.A. | Bending machine for the production of rectangular sheet metal panels from flat metal sheets |
EP0713734A1 (en) * | 1994-11-24 | 1996-05-29 | SAPIM AMADA S.p.A. | A blank press device for variable assembly with pre-determined steps for folding apparatuses |
GB2317843A (en) * | 1996-10-01 | 1998-04-08 | Rainforest R & D Limited | An apparatus and a method for bending a component |
CN108637100A (en) * | 2018-07-14 | 2018-10-12 | 青岛城之美创意科技股份有限公司 | A kind of omnipotent V-type bending bed die of modularization |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1238060B (en) * | 1990-02-09 | 1993-06-26 | Salvagnini Transferica Spa Ora | BENDING GROUP FOR SHEET METAL BENDING MACHINE |
ES2063671B1 (en) * | 1992-12-24 | 1996-12-01 | Goiti S Coop Ltda | AUTOMATIC LONGITUDINAL ADAPTATION DEVICE FOR THE PISADOR IN FOLDING-PANELING MACHINES. |
DE19636463C2 (en) * | 1996-09-07 | 1998-07-02 | Eht Werkzeugmaschinen Gmbh | Sheet metal working machine for plate-shaped work pieces with a hold-down divided into individual segments |
FR2952580B1 (en) * | 2009-11-18 | 2012-02-24 | Peugeot Citroen Automobiles Sa | BINDING TOOL FOR RAISING AN EDGE OF AN UNMULLED SHEET AFTER RECOVERING |
FI3330015T3 (en) * | 2014-02-10 | 2023-09-21 | Salvagnini Italia Spa | Sheet metal bending machine |
DE102014116386A1 (en) * | 2014-11-10 | 2016-05-12 | Trumpf Maschinen Austria Gmbh & Co.Kg. | Bending press and feeding device for a bending press |
AT516043B1 (en) | 2014-11-12 | 2016-02-15 | Trumpf Maschinen Austria Gmbh | Bending press and feeding device for a bending press |
CN106734396A (en) * | 2015-09-17 | 2017-05-31 | 佛山高富中石油燃料沥青有限责任公司 | Improved adjustable sheet metal bending device |
AT517597B1 (en) * | 2016-03-07 | 2017-03-15 | Trumpf Maschinen Austria Gmbh & Co Kg | Method for simultaneous displacement of at least two, held in a rail of a tool holder bending tools |
CN108144994A (en) * | 2016-12-06 | 2018-06-12 | 湖南家吉盈泰门业有限公司 | A kind of manual bending machine of the preposition regulating mechanism of band |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT199032B (en) * | 1956-12-06 | 1958-08-11 | Max Abt | Device for bending sheet metal or the like. |
DE2163738A1 (en) * | 1971-01-19 | 1972-08-03 | Hämmerte AG, Maschinenfabrik, Zofingen (Schweiz) | Bending machine |
DE2627972A1 (en) * | 1975-06-24 | 1977-01-13 | Amada Co Ltd | PROCESSING MACHINE |
EP0105091A2 (en) * | 1982-09-08 | 1984-04-11 | Maru Kikai Kogyo Co., Inc. | A tool length changing device in a panel forming machine |
-
1985
- 1985-12-27 EP EP85116595A patent/EP0186909B1/en not_active Expired - Lifetime
- 1985-12-27 DE DE88120283T patent/DE3587327T2/en not_active Expired - Fee Related
- 1985-12-27 EP EP88120283A patent/EP0310145B1/en not_active Expired - Lifetime
- 1985-12-27 DE DE8585116595T patent/DE3578390D1/en not_active Expired - Fee Related
- 1985-12-27 AT AT85116595T patent/ATE54078T1/en active
- 1985-12-30 KR KR1019850009980A patent/KR890004036B1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT199032B (en) * | 1956-12-06 | 1958-08-11 | Max Abt | Device for bending sheet metal or the like. |
DE2163738A1 (en) * | 1971-01-19 | 1972-08-03 | Hämmerte AG, Maschinenfabrik, Zofingen (Schweiz) | Bending machine |
DE2627972A1 (en) * | 1975-06-24 | 1977-01-13 | Amada Co Ltd | PROCESSING MACHINE |
EP0105091A2 (en) * | 1982-09-08 | 1984-04-11 | Maru Kikai Kogyo Co., Inc. | A tool length changing device in a panel forming machine |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT385689B (en) * | 1986-08-14 | 1988-05-10 | Voest Alpine Ag | DEVICE FOR BENDING SHEET CUTTINGS |
AT385688B (en) * | 1986-08-14 | 1988-05-10 | Voest Alpine Ag | DEVICE FOR BENDING SHEET CUTTINGS |
US4765171A (en) * | 1986-08-14 | 1988-08-23 | Voest-Alpine Aktiengesellschaft | Apparatus for flanging sheet metal blanks |
AT385690B (en) * | 1986-08-28 | 1988-05-10 | Voest Alpine Ag | Device for folding sheet metal blanks |
EP0274159A2 (en) * | 1987-01-09 | 1988-07-13 | SALVAGNINI S.p.A. | Bending machine for the production of rectangular sheet metal panels from flat metal sheets |
EP0274159A3 (en) * | 1987-01-09 | 1990-01-03 | Salvagnini Transferica S.P.A. | Bending machine for the production of rectangular sheet metal panels from flat metal sheets |
EP0713734A1 (en) * | 1994-11-24 | 1996-05-29 | SAPIM AMADA S.p.A. | A blank press device for variable assembly with pre-determined steps for folding apparatuses |
GB2317843A (en) * | 1996-10-01 | 1998-04-08 | Rainforest R & D Limited | An apparatus and a method for bending a component |
GB2317843B (en) * | 1996-10-01 | 1999-12-08 | Rainforest R & D Limited | An apparatus and a method for bending a component |
CN108637100A (en) * | 2018-07-14 | 2018-10-12 | 青岛城之美创意科技股份有限公司 | A kind of omnipotent V-type bending bed die of modularization |
Also Published As
Publication number | Publication date |
---|---|
EP0310145B1 (en) | 1993-05-05 |
DE3578390D1 (en) | 1990-08-02 |
EP0310145A2 (en) | 1989-04-05 |
KR860004665A (en) | 1986-07-11 |
EP0186909B1 (en) | 1990-06-27 |
EP0186909A3 (en) | 1987-03-25 |
KR890004036B1 (en) | 1989-10-18 |
DE3587327T2 (en) | 1993-10-07 |
ATE54078T1 (en) | 1990-07-15 |
DE3587327D1 (en) | 1993-06-09 |
EP0310145A3 (en) | 1989-12-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4660402A (en) | Apparatus for adjusting tool length of bending machine | |
EP0186909A2 (en) | Apparatus for adjusting tool length of bending machine | |
KR890001369B1 (en) | Apparatus for adjusting to tool length of panel forming machine | |
US4558582A (en) | Apparatus for flanging ventilation duct walls | |
US4753100A (en) | Process and apparatus for controlling a lifting support on sheet-metal presses | |
JP4899802B2 (en) | Bending machine with bending length adjustment mechanism | |
JP4608037B2 (en) | Machine for punching and bending metal sheets | |
US6715329B1 (en) | Method and device for forming a corner limited on three sides, from a plate-shaped material with an even surface | |
AU598202B2 (en) | Bending press | |
CN112275851A (en) | Die splicing knife device and method of full-automatic bending equipment | |
JPS6116203B2 (en) | ||
JPH0246995A (en) | Plate working machine | |
KR101061239B1 (en) | Roll Forming Strip Cutting Machine | |
JPS64132B2 (en) | ||
WO1985000766A1 (en) | Improvements in bending machines | |
US5001922A (en) | Quick change tooling for press machine | |
JP3131269B2 (en) | Plate processing equipment | |
JP3504288B2 (en) | Bending mold | |
JP3223846B2 (en) | Press brake | |
JPH03180215A (en) | Bending machine | |
JPS62134119A (en) | Roll bending device | |
JP2543454B2 (en) | Folding machine | |
CN218903170U (en) | Angle adjusting bed for bending die | |
JPH0428650Y2 (en) | ||
US6725702B2 (en) | Apparatus and method for overcoming angular deviations in a workpiece |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT CH DE FR GB IT LI |
|
17P | Request for examination filed |
Effective date: 19860801 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT CH DE FR GB IT LI |
|
17Q | First examination report despatched |
Effective date: 19881004 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE FR GB IT LI |
|
REF | Corresponds to: |
Ref document number: 54078 Country of ref document: AT Date of ref document: 19900715 Kind code of ref document: T |
|
XX | Miscellaneous (additional remarks) |
Free format text: TEILANMELDUNG 88120283.2 EINGEREICHT AM 27/12/85. |
|
ITF | It: translation for a ep patent filed |
Owner name: JACOBACCI & PERANI S.P.A. |
|
REF | Corresponds to: |
Ref document number: 3578390 Country of ref document: DE Date of ref document: 19900802 |
|
ET | Fr: translation filed | ||
ITTA | It: last paid annual fee | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PUE Owner name: MARU KIKAI KOGYO CO., INC. TRANSFER- MURATA KIKAI Ref country code: CH Ref legal event code: NV Representative=s name: RIEDERER HASLER & PARTNER PATENTANWAELTE AG |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20001201 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20001211 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20001219 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20001222 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20001229 Year of fee payment: 16 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011227 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011227 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011231 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011231 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020702 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20011227 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020830 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |