EP0097992B1 - Method and apparatus for contour cutting of plastic products - Google Patents
Method and apparatus for contour cutting of plastic products Download PDFInfo
- Publication number
- EP0097992B1 EP0097992B1 EP83200884A EP83200884A EP0097992B1 EP 0097992 B1 EP0097992 B1 EP 0097992B1 EP 83200884 A EP83200884 A EP 83200884A EP 83200884 A EP83200884 A EP 83200884A EP 0097992 B1 EP0097992 B1 EP 0097992B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filaments
- movement
- starting material
- framework
- block
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/06—Severing by using heat
- B26F3/08—Severing by using heat with heated members
- B26F3/12—Severing by using heat with heated members with heated wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/547—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member
- B26D1/553—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member with a plurality of wire-like cutting members
Definitions
- the invention relates to a method for simultaneously contour cutting a plurality of identical uniform plastic products from a single block of starting material, using a plurality of filaments disposed in parallel array for engagement of said single block and heated by an electric current, the filaments being given an oscillating movement along their longitudinal axis, the starting material being given a movement in the horizontal direction and at least some of the filaments being given a synchronised alternating movement in the vertical direction.
- the invention also relates to an apparatus for simultaneously contour cutting a plurality of identical uniform plastic products from a single block of starting material, according to the above method, comprising a work table movable substantially in a horizontal direction for receiving at least a part of a block of starting material, a drive mechanism for horizontal movement of the work table, a number of substantially vertical columns, a framework supporting a plurality of electrically heated filaments in parallel array as cutters for said block of starting material, a drive for imparting an oscillating movement to the filaments along their longitudinal axis, and drive means for imparting alternating vertical movement synchronised with the horizontal movement to at least some of the filaments.
- Such a method and apparatus are known from US ⁇ A ⁇ 3 786 701 in which a method and apparatus are disclosed for simultaneously contour cutting a plurality of identical uniform plastic products from a single block of starting material, using a plurality of filaments disposed in parallel array and heated by an electric current, the filaments being given an oscillating movement along their longitudinal axis and the starting material being given a movement in the horizontal direction, and at least some of the filaments being given a synchronised alternating movement in the vertical direction.
- This known method and apparatus are only intended for cutting during motion of the supporting platform in one single direction, and the framework in which two sets of parallel cutting filaments are mounted is given an oscillating movement as a whole.
- One set of parallel cutting filaments is directly connected to the frame by means of longitudinally aligned springs, while a second set of parallel cutting filaments is connected to movable bars by means of springs in which the movable bars move vertically in the plane of mounting of the filaments and are directly controlled by guide wheels, following patterns which are fixedly connected to the apparatus.
- the array of filaments is maintained in a common horizontal plane during cutting whereby said array has imparted to it an alternating programmed movement in the vertical direction, and a correspondingly programmed alternating movement is imparted to the block of starting material in the horizontal direction, thus defining in combination a prescribed cutting contour of each filament relative to the block of starting material.
- an apparatus of the type indicated above is characterized in that the framework is U-shaped and is disposed substantially in a horizontal plane such that the array of filaments is supported in a common horizontal plane, the drive for longitudinal oscillation of the filaments being adapted to oscillate the filaments within said U-shaped frame, in that the driving means for alternating vertical movement of the array of filaments are adapted to move the U-shaped framework up and down along the vertical columns according to a program thus transporting the plane of the filament array vertically, and in that the drive mechanism for horizontal movement of the work table is provided with a program for the horizontal alternating displacement of the work table, such that in combination with the programmed movement of the framework, the filaments follow a prescribed cutting contour relative to the block of starting material.
- a method for contour cutting a plurality of uniform plastic products from a block of starting material using a plurality of filaments disposed in parallel array and heated by an electric current, in which the block of starting material is given a programmed alternating movement, that is substantially parallel to the plane of the filaments.
- the filaments are only given a vertical movement, which is not alternating when the method is carried out, and the corresponding programmed movement in the horizontal direction of the block of starting material is obtained by means of a cammed wheel, by which it is only possible to obtain a quite simple form of contour.
- EP-A-0 035 852 an apparatus for contour cutting is described using four vertical columns disposed around the work table to support and guide a U-shaped framework, each column being provided with drive means for the vertical displacement of that part of the framework supported by the column.
- this known apparatus use is made of an endless cutting wire rotating on discs, and the framework, in which the cutting wire has been mounted, is given a movement in one direction, and the product to be cut a movement at right angles to the first movement. It is possible, by using this apparatus, to cut at most two blocks of material into a shape having a desired contour.
- this apparatus for cutting two identical products at the same time is already quite complicated, and it cannot be seen how an increased number of products could easily be cut at the same time.
- the apparatus depicted in Figure 1 comprises a base frame 1 on which four vertical columns 2 have been mounted in a rectangle. Enclosed within the columns is a work table 3. In the long direction of the apparatus a supporting beam 4 has been provided at both ends. These supporting beams are suspended on vertical carrier heads 5 which can be moved along the columns 2. Each of the carrier heads 5 is connected through a chain 6 and a sheave 7 with a counterweight 8. The load of this counterweight 8 is chosen such that it virtually compensates the load of the framework with supporting beams and any other components fitted to it weighing on each carrier head 5. Each of the carrier heads 5 can be displaced in a vertical direction by driving means - not shown in the drawings - moving synchronously for each carrier head, such as a screw spindle with nut. All these driving means are linked together for the four columns by means of drive shafts 9 and 10 in the longitudinal and crosswise direction, respectively.
- a drive motor is denoted by 11. Obviously, more drive motors may be applied, provided a vertically uniform displacement of the carrier heads is ensured.
- the columns are connected together at the top by means of structural shapes 12 and 13, respectively.
- Each of the supporting beams 4 is provided at the location of a vertical column 2 facing the carrier head with a coupling flange 14 for the attachment of the U-shaped framework to be discussed below.
- a screw spindle 15 with driving motor 16 has been mounted underneath the work table 3. This screw spindle meshes with a nut incorporated into a support 17 underneath the work table 3.
- the motor 16 enables the work table 3 to be moved to and fro over a distance of about two metres.
- the left-hand portion of the work table in Figure 1 is provided with a number of rollers 20 which allow of telescopic movement relative to a stationary supply conveyor 21.
- the work table 3 terminates above a delivery conveyor 22.
- a combined drive through the motors 11 and 16 any desired movement can be realized of the work table 3 in a horizontal direction and of the supporting beams 4 with the parts mounted in between to be described hereinafter in a vertical direction.
- these drives may be operated under numerical control.
- Figure 3 is top view of a substantially U-shaped frame consisting of two longitudinal bars 30 connected by a cross bar 31.
- Each bar 30 is provided with two coupling flanges 32 to permit mounting between the supporting beams 4 by means of the coupling flanges 14 mounted thereon.
- the longitudinal bars 30 are of the box type and each provided with a fan with motor 33 for the supply of cooling air to each bar 30.
- a rocker arm 35 At the side of each bar 30 a rocker arm 35 has been fitted. The rocker arms 35 move synchronously in opposite directions.
- a support 36 is provided for tension bars 37.
- a filament 40, a tension spring 41 and two terminal pull cables 42, 43 are invariably mounted between the two tension bars (see figure 6).
- the hollow bar is provided with discharge openings 45. Cold air supplied flows through these openings and thereby cools the part of the filaments 40 that projects from a block 46 to be cut.
- a lever 50 On the end of the rocker arms 35 that is located near the cross bar 31 a lever 50 has been mounted. The tip of this lever rests at 51 on an eccentric 52 which forms part of a short axle provided with a gear wheel 53.
- the two gear wheels 53 are interconnected by a rubber driving belt 54 which is provided with an internal toothing and which is held under initial tension by means of a movable thrust collar 55.
- the eccentric shaft mounted on the right-end side in Figure 4 is driven by a motor 56 (see also Figure 3).
- a synchronous displacement of the two rocker arms is accomplished by the use of a toothed belt.
- the initial tension of the several springs 41 ensures that the levers 50 continuously lie against the eccentric 52.
- the work table is designed for receiving a block of starting material at least four metres long. It is also possible to process blocks of starting material twelve metres long by running such blocks through the apparatus in three passes.
- the block of starting material can be pushed on to position 60, it being understood that its front will have been profiled in accordance with the contours of the cut products, and subsequently a corresponding number of products can be cut by a substantially upward movement of the U-shaped frame, to be followed by a third series of products made from the block of starting material.
- oscillating contour cutting can be practised not only on thermoplastic synthetics such as polystyrene foam, but also on rigid foam material such as polyurethane.
- the surface so obtained is smooth and comparable to that produced by mechanical sawing, but without any sawdust being formed.
- Cutting according to the invention involves a material loss of at most 1 mm, whilst the cutting speed attainable for, say, rigid polystyrene foam may be as much as four metres per minute.
- the temperature of the filament is set to a value of 80 to 90°C, but, depending on the resistance of the material to be cut, a higher equilibrium temperature may be reached on account of the friction.
- An effective straight cut proves to be feasible at an average initial tension of the filaments of 10 kg.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Details Of Cutting Devices (AREA)
Abstract
Description
- The invention relates to a method for simultaneously contour cutting a plurality of identical uniform plastic products from a single block of starting material, using a plurality of filaments disposed in parallel array for engagement of said single block and heated by an electric current, the filaments being given an oscillating movement along their longitudinal axis, the starting material being given a movement in the horizontal direction and at least some of the filaments being given a synchronised alternating movement in the vertical direction.
- The invention also relates to an apparatus for simultaneously contour cutting a plurality of identical uniform plastic products from a single block of starting material, according to the above method, comprising a work table movable substantially in a horizontal direction for receiving at least a part of a block of starting material, a drive mechanism for horizontal movement of the work table, a number of substantially vertical columns, a framework supporting a plurality of electrically heated filaments in parallel array as cutters for said block of starting material, a drive for imparting an oscillating movement to the filaments along their longitudinal axis, and drive means for imparting alternating vertical movement synchronised with the horizontal movement to at least some of the filaments.
- Such a method and apparatus are known from US―A―3 786 701 in which a method and apparatus are disclosed for simultaneously contour cutting a plurality of identical uniform plastic products from a single block of starting material, using a plurality of filaments disposed in parallel array and heated by an electric current, the filaments being given an oscillating movement along their longitudinal axis and the starting material being given a movement in the horizontal direction, and at least some of the filaments being given a synchronised alternating movement in the vertical direction. This known method and apparatus are only intended for cutting during motion of the supporting platform in one single direction, and the framework in which two sets of parallel cutting filaments are mounted is given an oscillating movement as a whole. One set of parallel cutting filaments is directly connected to the frame by means of longitudinally aligned springs, while a second set of parallel cutting filaments is connected to movable bars by means of springs in which the movable bars move vertically in the plane of mounting of the filaments and are directly controlled by guide wheels, following patterns which are fixedly connected to the apparatus.
- It is the object of the present invention to provide an improved method of the type specified above, in which a plurality of contoured products of an intricate form can be obtained and in which each simultaneously cut product has identical dimensions and has a substantially identical form over its entire width and in which at least some parts of the contour are cut in an opposite direction compared to adjacent parts of the contour, as well as an improved apparatus for carrying out such a method.
- To this end according to the invention it is proposed, starting from a method of the type specified above, that the array of filaments is maintained in a common horizontal plane during cutting whereby said array has imparted to it an alternating programmed movement in the vertical direction, and a correspondingly programmed alternating movement is imparted to the block of starting material in the horizontal direction, thus defining in combination a prescribed cutting contour of each filament relative to the block of starting material. By means of such correspondingly programmed alternating movements a plurality of virtually identical products, depending on the number of filaments used, is obtained from a single block of starting material. The products obtained have a uniform profile or contour over the whole width of the products cut, while a sharp cornered contour can be obtained.
- According to the invention, an apparatus of the type indicated above is characterized in that the framework is U-shaped and is disposed substantially in a horizontal plane such that the array of filaments is supported in a common horizontal plane, the drive for longitudinal oscillation of the filaments being adapted to oscillate the filaments within said U-shaped frame, in that the driving means for alternating vertical movement of the array of filaments are adapted to move the U-shaped framework up and down along the vertical columns according to a program thus transporting the plane of the filament array vertically, and in that the drive mechanism for horizontal movement of the work table is provided with a program for the horizontal alternating displacement of the work table, such that in combination with the programmed movement of the framework, the filaments follow a prescribed cutting contour relative to the block of starting material. By oscillating all filaments along their longitudinal axis within the U-shaped framework a nearly vibration-free drive is obtained. By oscillating all filaments in a common horizontal plane and by giving the U-shaped framework an alternating vertical movement sharp-cornered products are obtained.
- It is remarked that in FR-A-1 355 283 a method is disclosed for contour cutting a plurality of uniform plastic products from a block of starting material, using a plurality of filaments disposed in parallel array and heated by an electric current, in which the block of starting material is given a programmed alternating movement, that is substantially parallel to the plane of the filaments. However, according to this method the filaments are only given a vertical movement, which is not alternating when the method is carried out, and the corresponding programmed movement in the horizontal direction of the block of starting material is obtained by means of a cammed wheel, by which it is only possible to obtain a quite simple form of contour. By carrying out such a method adjacent parts of the contour cannot be cut in an opposite direction. Owing to the use of cammed wheels only a slight alteration of the direction of the cut can be obtained, as can be seen from figures 5 and 7 of this publication. Furthermore, according to this publication, no reciprocating movement of the filaments is proposed and the method can only be used for a quite restricted height of the block of starting material.
- It is furthermore remarked that in EP-A-0 035 852 an apparatus for contour cutting is described using four vertical columns disposed around the work table to support and guide a U-shaped framework, each column being provided with drive means for the vertical displacement of that part of the framework supported by the column. In this known apparatus use is made of an endless cutting wire rotating on discs, and the framework, in which the cutting wire has been mounted, is given a movement in one direction, and the product to be cut a movement at right angles to the first movement. It is possible, by using this apparatus, to cut at most two blocks of material into a shape having a desired contour. However, this apparatus for cutting two identical products at the same time is already quite complicated, and it cannot be seen how an increased number of products could easily be cut at the same time.
- Further particulars of the invention also become apparent from the following description of an embodiment of apparatus according to the invention.
- In the drawings:
- Figure 1 is a schematic side view of an apparatus according to the invention;
- Figure 2 is a top view of the same apparatus;
- Figure 3 is a detailed top view of a U-shaped frame;
- Figure 4 is an end view on IV-IV in figure 3;
- Figure 5 is a sectional view on V-V in figure 3;
- Figure 6 depicts a section along the line VI-VI in figure 3 on an enlarged scale; and
- Figure 7 shows a few products.
- The apparatus depicted in Figure 1 comprises a base frame 1 on which four
vertical columns 2 have been mounted in a rectangle. Enclosed within the columns is a work table 3. In the long direction of the apparatus a supportingbeam 4 has been provided at both ends. These supporting beams are suspended onvertical carrier heads 5 which can be moved along thecolumns 2. Each of thecarrier heads 5 is connected through achain 6 and asheave 7 with acounterweight 8. The load of thiscounterweight 8 is chosen such that it virtually compensates the load of the framework with supporting beams and any other components fitted to it weighing on eachcarrier head 5. Each of thecarrier heads 5 can be displaced in a vertical direction by driving means - not shown in the drawings - moving synchronously for each carrier head, such as a screw spindle with nut. All these driving means are linked together for the four columns by means ofdrive shafts - A drive motor is denoted by 11. Obviously, more drive motors may be applied, provided a vertically uniform displacement of the carrier heads is ensured. The columns are connected together at the top by means of
structural shapes - Each of the supporting
beams 4 is provided at the location of avertical column 2 facing the carrier head with acoupling flange 14 for the attachment of the U-shaped framework to be discussed below. On the base frame 1, ascrew spindle 15 with drivingmotor 16 has been mounted underneath the work table 3. This screw spindle meshes with a nut incorporated into asupport 17 underneath the work table 3. By means of schematically showncarrier wheels 18, the work table 3 rests on guidingtracks 19. Themotor 16 enables the work table 3 to be moved to and fro over a distance of about two metres. The left-hand portion of the work table in Figure 1 is provided with a number ofrollers 20 which allow of telescopic movement relative to astationary supply conveyor 21. On the right-hand side, the work table 3 terminates above adelivery conveyor 22. By a combined drive through themotors 11 and 16, any desired movement can be realized of the work table 3 in a horizontal direction and of the supportingbeams 4 with the parts mounted in between to be described hereinafter in a vertical direction. Optionally, these drives may be operated under numerical control. - Figure 3 is top view of a substantially U-shaped frame consisting of two
longitudinal bars 30 connected by across bar 31. Eachbar 30 is provided with twocoupling flanges 32 to permit mounting between the supportingbeams 4 by means of thecoupling flanges 14 mounted thereon. Thelongitudinal bars 30 are of the box type and each provided with a fan withmotor 33 for the supply of cooling air to eachbar 30. At the side of each bar 30 arocker arm 35 has been fitted. Therocker arms 35 move synchronously in opposite directions. On top of the rocker arm 35 asupport 36 is provided fortension bars 37. Afilament 40, atension spring 41 and twoterminal pull cables bars 37 move away from one another, the increased distance will be accommodated by an elongation of thetension spring 41. In the embodiment according to figure 6, thebottommost filament 40 will then move to the left. A large number of wires, say 50, have been strecthed between the tworocker arms 35 in the manner indicated, such that thetension spring 41 is alternately attached to either one of the tension bars. In consequence, when thetension bars 37 move outwards, one half of thefilaments 40 travel to the left and the other half of the filaments to the right, and when the tension bars move back inwards these filaments will each travel in opposite direction. - As the forces exerted by the several filaments are oriented in opposite directions, the resulting force on the material to be processed will be virtually nil.
- As appears from figure 6 in particular, the hollow bar is provided with
discharge openings 45. Cold air supplied flows through these openings and thereby cools the part of thefilaments 40 that projects from ablock 46 to be cut. - For the synchronous drive of the tension bars on the
rocker arms 35, reference is made to the terminal view of figure 4. - On the end of the
rocker arms 35 that is located near the cross bar 31 alever 50 has been mounted. The tip of this lever rests at 51 on an eccentric 52 which forms part of a short axle provided with agear wheel 53. The twogear wheels 53 are interconnected by arubber driving belt 54 which is provided with an internal toothing and which is held under initial tension by means of amovable thrust collar 55. The eccentric shaft mounted on the right-end side in Figure 4 is driven by a motor 56 (see also Figure 3). A synchronous displacement of the two rocker arms is accomplished by the use of a toothed belt. The initial tension of theseveral springs 41 ensures that thelevers 50 continuously lie against the eccentric 52. - It has been found that an efficient, vibrationproof drive of the whole can be achieved by maintaining an initial tension for the two
rocker arms 35 relative to the U-shaped framework such that the overall tension of thesprings 41 is substantially compensated provided that sufficient force is at all times preserved for thelevers 50 to lie against theeccentrics 51. Depending on the requisite driving frequency, the initial tension may be adapted. - The work table is designed for receiving a block of starting material at least four metres long. It is also possible to process blocks of starting material twelve metres long by running such blocks through the apparatus in three passes.
- By the application of fifty cutting wires between the two rocker arms, forty-nine pieces can be cut at a time in one vertical movement. This is illustrated in Figure 7, where the dot-dash line represents the contour of a block to be cut. A number of successive cutting wires are denoted by A', N, 0. The block to be cut is placed with its foremost boundary line at the desired distance. Next, the cut A'-A is made by a vertical displacement of the U-shaped framework. All the other cutting wires perform a corresponding cut. Then, a combined displacement of the work table in a horizontal plane and of the filaments in the U-shaped frame upwards takes place for the cut A-B and the corresponding cuts of the other filaments. Subsequently, a horizontal displacement is continued in the same direction, whereas the U-shaped frame moves down, so that the cut B-C is carried out. Thereupon, the vertical displacement is continued but the work table inverts the direction of travel for the cut C-D to be made. Next to follow is the cut D-E, upon inversion of the direction of travel of the work table, and then the cut E-F, again requiring inversion of the direction of travel of the work table. Finally, a cut F-G is made, whereupon the U-shaped frame moves down to the indicated G'. In this position the
filaments 40 have all come to rest inlocal recesses 70 in the work table 3. - As the consecutive wire N has in the mean time gone through a corresponding movement along the points A, K, L, G to N', the foremost product has been cut loose with one vertical movement of the U-shaped frame, and as a matter of course so have all the other forty-nine products.
- Thereupon, the block of starting material can be pushed on to position 60, it being understood that its front will have been profiled in accordance with the contours of the cut products, and subsequently a corresponding number of products can be cut by a substantially upward movement of the U-shaped frame, to be followed by a third series of products made from the block of starting material.
- It is worth noting that a very sharp cut is obtained by the use of oscillating filaments with hardly any deflection of the filament. As a result, it is possible to produce clear-cut contours over the entire width of the block to be processed, even when acute angles are cut as in the example of Figure 7. In the cutting of angles, therefore, the cutting speed need hardly be reduced, although this is easily done, if desired. In this fashion, products are obtained with a sharply profiled appearance. In this case of thermoplastic starting material, all cells at the surface of cut are sealed by annealing, affording an extremely smooth appearance, because no dust is formed during cutting which could roughen the surface.
- It has been found that oscillating contour cutting can be practised not only on thermoplastic synthetics such as polystyrene foam, but also on rigid foam material such as polyurethane. The surface so obtained is smooth and comparable to that produced by mechanical sawing, but without any sawdust being formed. Cutting according to the invention involves a material loss of at most 1 mm, whilst the cutting speed attainable for, say, rigid polystyrene foam may be as much as four metres per minute. The temperature of the filament is set to a value of 80 to 90°C, but, depending on the resistance of the material to be cut, a higher equilibrium temperature may be reached on account of the friction. An effective straight cut proves to be feasible at an average initial tension of the filaments of 10 kg.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83200884T ATE24682T1 (en) | 1982-06-16 | 1983-06-16 | METHOD AND DEVICE FOR CONTOUR CUTTING OF PLASTIC PRODUCTS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8202437 | 1982-06-16 | ||
NL8202437A NL8202437A (en) | 1982-06-16 | 1982-06-16 | METHOD AND APPARATUS FOR CONTOUR CUTTING OF PLASTIC PRODUCTS, AND IMPROVED CONTOUR CUTTING PRODUCTS. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0097992A1 EP0097992A1 (en) | 1984-01-11 |
EP0097992B1 true EP0097992B1 (en) | 1987-01-07 |
Family
ID=19839892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83200884A Expired EP0097992B1 (en) | 1982-06-16 | 1983-06-16 | Method and apparatus for contour cutting of plastic products |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0097992B1 (en) |
AT (1) | ATE24682T1 (en) |
DE (1) | DE3368888D1 (en) |
NL (1) | NL8202437A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8500525A (en) * | 1985-02-25 | 1986-09-16 | Dijk Bv Gebr Van | METHOD AND APPARATUS FOR CONTOUR CUTTING |
FR2665100A1 (en) * | 1990-07-27 | 1992-01-31 | Croma Sarl | METHOD AND APPARATUS FOR CUTTING BLOCKS AND PLATES OF CELLULAR SYNTHETIC MATERIALS. |
WO1995034354A1 (en) * | 1994-06-16 | 1995-12-21 | Giovanni Lavermicocca | Three-dimensional puzzles |
US5950512A (en) * | 1996-10-11 | 1999-09-14 | Gary D. Fields | Apparatus to make building blocks for blockwork domed structures, and method and domed structure |
DE29801499U1 (en) * | 1998-01-30 | 1999-06-02 | Kurtz Altaussee Gmbh, Altaussee | Cutting device for cutting thermally processable material |
FR2787376B1 (en) * | 1998-12-22 | 2001-03-09 | Esox | METHOD AND INSTALLATION FOR CUTTING PARTS OF ANY SHAPE |
ITVR20120072A1 (en) * | 2012-04-13 | 2013-10-14 | Oms Automation S R L | CUTTING DEVICE FOR LASTRIFORMS ELEMENTS FOR THE PRODUCTION OF PANELS IN EXPANDED PLASTIC MATERIAL |
CN115194892B (en) * | 2022-07-28 | 2023-11-28 | 无锡焙斯机械有限公司 | Butter cutting machine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3786701A (en) * | 1971-11-05 | 1974-01-22 | E Ludwig | Device for cutting urethane foam |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3089526A (en) * | 1960-06-23 | 1963-05-14 | Lykkeberg Alfred | Machine for slicing meat |
FR1355283A (en) * | 1963-04-29 | 1964-03-13 | Simoniz Co | Cutting machine |
BE754761A (en) * | 1970-08-12 | 1971-01-18 | Vossen Claude | Slicing meat |
AU7815375A (en) * | 1974-02-27 | 1976-08-12 | Treffner P | Method and apparatus for cutting plastics materials |
AU4306579A (en) * | 1978-01-09 | 1979-07-19 | Charles Treffner | Multi-bladed cutting apparatus |
US4175455A (en) * | 1978-03-22 | 1979-11-27 | Mcneil Corporation | Travelling cut-off saw |
EP0035852A3 (en) * | 1980-02-27 | 1981-09-23 | J. MacA. King & Co., Limited | Contour cutters |
-
1982
- 1982-06-16 NL NL8202437A patent/NL8202437A/en not_active Application Discontinuation
-
1983
- 1983-06-16 EP EP83200884A patent/EP0097992B1/en not_active Expired
- 1983-06-16 AT AT83200884T patent/ATE24682T1/en not_active IP Right Cessation
- 1983-06-16 DE DE8383200884T patent/DE3368888D1/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3786701A (en) * | 1971-11-05 | 1974-01-22 | E Ludwig | Device for cutting urethane foam |
Also Published As
Publication number | Publication date |
---|---|
ATE24682T1 (en) | 1987-01-15 |
DE3368888D1 (en) | 1987-02-12 |
NL8202437A (en) | 1984-01-16 |
EP0097992A1 (en) | 1984-01-11 |
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