CA1278506C - Procedure for automatically cutting pieces of material to order, using a band of material and a device for carrying out the procedure - Google Patents
Procedure for automatically cutting pieces of material to order, using a band of material and a device for carrying out the procedureInfo
- Publication number
- CA1278506C CA1278506C CA000508715A CA508715A CA1278506C CA 1278506 C CA1278506 C CA 1278506C CA 000508715 A CA000508715 A CA 000508715A CA 508715 A CA508715 A CA 508715A CA 1278506 C CA1278506 C CA 1278506C
- Authority
- CA
- Canada
- Prior art keywords
- cutting
- band
- cutting tool
- tool
- conveyor belt
- 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 - Lifetime
Links
Classifications
-
- 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
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
- B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
-
- 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
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/018—Holding the work by suction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/3806—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface
- B26F1/3813—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Control Of Cutting Processes (AREA)
- Detergent Compositions (AREA)
- Compounds Of Unknown Constitution (AREA)
- Nonmetal Cutting Devices (AREA)
- Labeling Devices (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Sawing (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
Abstract
ABSTRACT
Process and device for cutting pieces of material to order, from a band of material, by using a cutting table equipped with a vacuum installation for holding the band of material in place and a workable, longitudinal and traverse slide on the cutting table, running along the desired cutting lines, which is control-led by a data processor for marking and data control,as the car-rier of a cutting tool driven by ultrasound, for the purpose of which a conveyor belt with a base similar to a brush serves as the means of transport for the band of material in the cutting area and as a cutting base, which is moved, step by step, by means of a slide range that, for the finished cut of a piece of material, is larger than the cutting tool's most ample movement in the longi-tudinal direction , for which purpose, the cutting tool in each case is only moved following the transportation phase, with the conveyor belt being stationary all along the cutting lines.
Process and device for cutting pieces of material to order, from a band of material, by using a cutting table equipped with a vacuum installation for holding the band of material in place and a workable, longitudinal and traverse slide on the cutting table, running along the desired cutting lines, which is control-led by a data processor for marking and data control,as the car-rier of a cutting tool driven by ultrasound, for the purpose of which a conveyor belt with a base similar to a brush serves as the means of transport for the band of material in the cutting area and as a cutting base, which is moved, step by step, by means of a slide range that, for the finished cut of a piece of material, is larger than the cutting tool's most ample movement in the longi-tudinal direction , for which purpose, the cutting tool in each case is only moved following the transportation phase, with the conveyor belt being stationary all along the cutting lines.
Description
~78S~ç;
The invention relates to a process for cutting pieces of material from a band of material.
Swiss patent No. 406,103, discloses for automatically cutting pieces of cloth to order, to hold the band of cloth to be cut on a perforated cutting table by means of a vacuum-suction device and have a cutting blade, working in an up-down movement in a housed carrier moving lengthwise and crosswise of the cut-ting table, which is put into movement by means of command sig-nals stored in a memory in such a way that the blade is guidedalong a predetermined cutting line on the band of cloth and cuts the desired pieces of cloth for this purpose. For this purpose, howaver, it is necessary for the cutting line of the pattern to be cut to be established as an uninterrupted line, free of crosses, and that this line be explored by a tracing device, to be able to cut to order automatically and continuously, by means of the cutting tool, the different pieces of cloth, according to the explored cutting line.
.
~Z78S06 In order to increase the cutting capacity, in addition to the disclosures of DE-OS 28 17 674, we also have knowledge of simultaneously cutting several layers of cloth placed one on top of the other, which are held in place in a like manner on a cut-ting table by means of a vacuum-suction device. Through the use of this cutting unit, and utilizing modern control techniques, it is not necessary then to establish the cutting line of the pat-tern as an uninterrupted line free of crosses and explore this line by means of a tracing device, giv~n that in the latter pro-cess, according to the so-called NC control, all of the position-ing and control data are stored as digital signals and are pro-cessed by a data processor for the purpose of generating the con-trol signals necessary for the drive motors of the cutting tool and the tool carrier. Similar machines have been disclosed, for example, in U.S. Patent No. 3,511,124, 3,715,945 and 3,776,072.
,~
~Z78506 The cutting head on the cutting tool itself is a costly mechanism to manufacture, which requires a tool carrier which ls housed and works with an up-down movement for housing the blade, a first drive for the generating of the up and down movement and a second drive for the rota-tion of the tool carrier, as well as a third drive for the raising of the complete cutting head during its movement along the X and Y direction regarding the cutting table, as well as gears for the transmission of all of these movements. See DE Patent No. 26 14 347.
A construction of this type is also inconvenient from the point of view of its large mass, given that during the cut-ting movements and along the cutting lines, this must accelerate and stop constantly, entirely independent of the fact that its maintenance is also burdensome and costly.
~7~506 In light of ever-increasing costs, there is a consider-able demand for inexpensive installations for automatically cut-ting pieces of material or cloth to order.
The present invention remedies this problem by provid-ing a drive system for the cutting part and thus create a process for automatically cutting pieces of material to order from a band of material, that is to say, to establish considerably simpler procedures than those which have been used to date.
According to the present invention there is provided a process for cutting pieces of material to order from a piece of material having at least one layer on a cutting table having a vacuum installation for holding the band of material in place and a slide moving lengthwise and crosswise of the cutting table as a carrier for a cutting tool, the movements of which, along the cutting llnes, are controlled by a data processor which processes the marking data and the data control, the cutting tool being driven by ultrasound and an endless conveyor belt with a syn-thetic fiber base, the individual fibers of which are approxi-mately 0.5 mm in diameter and 5 mm in length, for transporting the band of material in the cutting area and as a cutting base, and through a step-by-step movement of the conveyor belt with a wide range, which, for the finished cut of a piece of material, is greater than the maximum movement of the cutting tool in the longitudinal direction, which is moved, in each case, only fol-lowing the transport phase with the conveyor belt, stationary along the cutting lines. Suitably the cutting movements are car-ried out perpendicularly to the surface that serves as the base for the material to be cut and are produced by an ultrasonic gen-erator.
The present invention also provides a cutting table and a carrier moveable lengthwise and crosswise of the cutting table for the cutting tool, the movements of which, along the desired cu'ting lines, are controlled by a data processor which is numer-~2'7~ )6 ical and which processes the marking data and control data, a vacuum installation for holding the band of material in place on the cutting table, a cutting tool which is knife-shaped, which is fitted with an ultrasonic generator and a non-stop conveyor belt which serves as a cutting table, with synthetic fibers running in the same direction as the cutting and which are approximately 0.5 mm in diameter and 5 mm in length, which is guided step by step, at least, through a transport area and a wide-range cutting area, which for the finished cut of a piece of material, is greater than the maximum cutting movement of the cutting tool in the lon-gitudinal direction. Suitably the cutting tool has one edge per-pendicular to the cutting surface and is housed to be rotatable around the axis, which is also perpendicular to the cutting sur-face. Desirably the cutting tool has one edge which forms an angle with the cutting sur~ace and is housed to be rotatable around an axis that is perpendicular to the cutting surface.
In one embodiment of the present invention the swing amplitude of the ultrasonic emitter has dimensions which allow the blade to penetrate the surface of the cutting table on cut-ting the band of material. Suitably the blade, a coupling ele-rnent and the ultrasonic emitter comprise a cutting unit which is housed to be moved vertically, and which is located on a disc comprised of a cogwheel, the bearing of which has a hollow cen-tral axle, which surrounds the coupling element, the hollow axleof which is housed rotating on a crossbar ~olned to carrier.
Preferably a regulating cylinder is assigned to the cutting group. Suitably the hollow axle has a presser-bar that is spring-loaded, in the area in which the blade passes through.
~ - 5 -~X7~1~06 Through the utilization, in accordance with the inven-tion, of a ultrasonic generator as the drive system for the cut-ting part and the configuration of the non-stop conveyor belt as the step-by-step connection part, at the same time used as a fixed cutting table during the cutting process, on which the band of material to be cut is held in place, spread out, by means of a vacuum installation, it is possible to cut a band of material with the required precision, in a considerably faster and simpler way than has been used to date, and achieve the desired cuts to order.
Regarding the cutting systems known, in which the blade stroke amounts to approximately 15-20 mm, here it is between 2 and 3, with an approximate maximum of 5 mm. For this purpose, the cutting movement frequency is much grater than in known sys-tems. The height of the fibers on the brush surface can thus be considerably reduced regarding the presently-known systems, which provides for considerable savings.
Another advantage to be considered is the fact that the regulation of the cutting tool around axis X is much simpler to carry out than it has been to date, and because the vertical movement along axis Z can take place with the blade stopped, con-trary to the known systems, in which the cutting tool, when on run free, that is to say, at maximum speed, is moved from one piece to another, thus with the process of cutting to order requiring a high capacity for free run.
The moveable carriers coordinated with the area for cutting to order are controllable by means of a data-control pro-cessor NC, in such a way - in the X and Y direction - that the cutting head can reach any d~signated point on the surface of the band of material.
The controlling signal for the direct current motors that move the carriers are generated in the so-called cutting line generators, thus making the directions of the movements and the accelerations and speeds controllable within ample limits.
In this way, it is possible to profitably cut different materials with NC control, such as: fabric, paper, cardboard, plastic and similar materials, material in the shape of bands in individual layers or also in multiple layers, for the purpose of which the material to be cut can be processed from a roll or as a flat sheet.
The present invention will be further illustrated in the following by way of an example of the process, by way of the accompanying schematic drawings, in which:-Figure 1 is a perspective drawing of a machine con-trolled by NC controls for the cutting of pieces of material from a band of material according to the invention;
Figure 2 is a diagram of a vacuum device of the machine according to Figure 1 from a side view, holding a band of mate-rial in place during the cutting process;
Figure 3 i.s a perspective drawing of a drive device for the carrier of the machine according to Figure 1, the cutting head carrier;
Figure 4 is the cutting tool for the machine according to Figure 1, in diagram form;
~278~6)6 Figure 5 is a second way in which the cutting tool can operate, according to Figure 4, in diagram form;
Figure 6 is the cutting head for the machine according to Figure 1, in a perspective drawing; and Figure 7 is in diagram form, a partial cross-section of a side view of the cutting head according to Figure 6.
In Figure 1, a machine for automatically cutting to order, for example with NC controls, which is defined along gen-eral lines with reference number 20, is represented. A material (24) to be cut is on the cutting surface (26), also defined as the cutting table.
~78506 The cutting surface is comprised of a type of brush surface ~28) (Figures 4 and 5) of synthetic fibers, approximately 0.5 mm thick and 5 mm in length, which is air-permeable, which covers the entire cu-ttiny surface and upon which the vacuum acts, which is generated by means of a generator (40~ (Fiyure 2).
_ g _ ~X78~i~6 A cutting head (81) which holds the cu-tting tool (106) still to be descrlbed, is housed and moves in the X and Y direc-tions, which coincide with the lengthwise and crosswise direc-tions of the cutting surface (26). ~s is shown in detail in Fig-ure 3, a carrier (49) has been designed, which is fundamentallymoveable in the X direction and a carrier (62), moveable in the ~
direction. The X carrier (49) slides along rails (64), which are arranged in parallel to one another in the cutting area ~26), while carrier Y'S movement is crosswise and that of carrier x is lengthwise. Given that the movement in both directions takes place according to the same principle, only the movement in direction X is described here.
B
~78~;06 rhe drive of the carrier in direction X is comprised of a direct current nlol:ur (6G), located at the front part of the cutting area, a tacllometer (63) and a position reyulator (70), which is controlled by a position servoregulator, not sho~^/n here. Through a reducing gear (72-74), the motor (66) moves on an axle (76), which is pro-jected cross~ise through the cutting table, over which a nonstop conveyor belt is guided, which supports the brush surface (28).
At the free ends of the axle, there are toothed pulleys (78,80), by oeans of wllich the toothed belts (82,84) are guided, nonstop, whicll are kept taut by means of the toothed pulleys (86,88). The X carrier (49) is screwed to the toothed pulleys (84), through which it is synchronized in movement with the belts (~2,84).
On carrier X (~9), there is a direct current motor (90), a tach-ometer (92), a position regulator (94), a gear (96,98) with drive pulleys (100), a toothed belt (102) and a tensing roller (104), which serve to drive carrier Y (62~. The movements in direction Y
are controlled in the same way that it is done in direction X, by means of c coordinated regulation of the position, for which pur-pose the habilitation signals for the X and Y regulation coils, in addition to the cutting tool (106) for the movement, rotation, around axle Z located perpendicularly to the cutting surface (26) are generated in a control apparatus ~18).
AS is shown in Figure 4, the cutting tool (106) has one edge (108) which is oriented exactly in the direction of axle Z, perpendicular to the cutting s face (26), around which the cutting tool (106) rotates. In this way, the length of the edge of the blade (108) only has to be longer by a short safety distance, - reference num--~ 27850Ç;
. r 112,- measuring approximately 2 - 3 mm longer than the pile (24a) of material to be cut. In this way, it is assured that, along the full length, the blade does not penetrate the cut ting surface (26).
According to a second example of the working of the invention,we use a cutting tool (116) designed in a different way, principally, when few layers of cloth are to be cut~ This cutting tool (116) is shown in Figure 5 and has one edge (118~, which is located un-der a slight cutting angle ( ~ ) regarding the cutting sur.face (26).
This angle is smaller than the right angle, which is formed by the edge (108) in Figure 4, regarding the cutting surface (26).
This arrangement make; the cutt.ing easier and enhances the move-ment of the tool.
Although it may depend on the cutting to be done, the cutting tool can vary, the drive in the form of a transducer (30) (emitter) is th~ same, see Figure 7. By means of the transducer, the cutting tool is started vibrating from 20 to 40 Khz, with amplitudes of from a few hundreths to a few tenths of a millimeter, with higher or lower intensities, depending upon the material and the beight of the cut, utilizing for this process the general principles of an ultrasonic procedure, as is, in itsel~, already known. For this purpose, an ultrasonic generator (31) (Figure 1) is provided for, not shown in greater detail, which generates a sequence of electri-cal signals, which are transmitted by means of a cable (32) (Figures 6 and 7) and a so-called convertor (34) of tne transducer, which con-vert the electrical signals into mechanical vibrations, which are transmitted to a booster (36), which has the special shape as seen . .
~ Z~8~;~6 '3 Figure 7. A booster of this type is a mechanical amplifier.
Lastly> the transducer (30) also includes a ~Sonotrode~ (38), on which the cutting tool is mounted. Here, ultrasonic energy is used.
One part of this is represented by the blade. The geometric forms can also vary regarding the shape shown, depending upon the cut-t;ng tool, to thus achieve an ideal adaptation, the booster and the ~Sonotrode thus form a coupling element.
In Figures 6 and 7, other details of the cutting head are shown.
In these figures, one can see a motor (60), which serves to adjust the blade around axle Z. The motor (60) drives the cutting group defined in conjunction w;th 73 by means of cogwheels (63 and 65), See Figure 7. For this purpose, the cogwheel (65) used as a pulley is joined to a hollow axle (67), rotating in a housing on the ball bearings (69 and 71), which, in turn, are located on the cross-bar (66) of the unit (73). The crossbar (66) is joined to the Y
carrier (62). Also see Figure 3. A carrier (75), working in an up and down movement, mounted on the crossbar (61), positioned on the cogwheel (65), supports_the ultrasonic emitter or tran~ducer (30) and can be moved by means of a cylinder (77). The cutting head (81) is thus moveable in the X or Y direction by means of carriers X and Y, descr;bed in relation to Figure 3; and in direction Z, fundamental-ly only the cutting tool, by means of carrier Z (75), previously des-cribed in relation to Figure 7, while the rotation of the cutting tool around axle Z takes place by means of the motor (60) ~`-The control in the control apparatus (18) must be-set in such a-way that the rotation around axle Z is not over 360 or 2 x 360~, for the purpose of avoiding a crossing Gf the cables and feeder lines;
J the contrary, rotating joints would have to be used. However, the cutting head has to be able to mvoe within these limits and with a free-run movement - for this purpose, without any cutting movements - to adopt the 0 position.
Although the possibility does also exist of using sliprings as couplers for the cables and feeder lines.
h~
The cutting ~h~d, according to Figure 7, also has a presser bar (79), by means of which the material to be cut, for example a cloth, is pressed down slightly,by the action of a spring (83),against the cutting surface ~26).
The pressure bar is mounted on the hollow axle (67) in the area of the pas~ing blade (106). The spring (83) is supported by a base (89), also mounted on the hollow axle.
The invention relates to a process for cutting pieces of material from a band of material.
Swiss patent No. 406,103, discloses for automatically cutting pieces of cloth to order, to hold the band of cloth to be cut on a perforated cutting table by means of a vacuum-suction device and have a cutting blade, working in an up-down movement in a housed carrier moving lengthwise and crosswise of the cut-ting table, which is put into movement by means of command sig-nals stored in a memory in such a way that the blade is guidedalong a predetermined cutting line on the band of cloth and cuts the desired pieces of cloth for this purpose. For this purpose, howaver, it is necessary for the cutting line of the pattern to be cut to be established as an uninterrupted line, free of crosses, and that this line be explored by a tracing device, to be able to cut to order automatically and continuously, by means of the cutting tool, the different pieces of cloth, according to the explored cutting line.
.
~Z78S06 In order to increase the cutting capacity, in addition to the disclosures of DE-OS 28 17 674, we also have knowledge of simultaneously cutting several layers of cloth placed one on top of the other, which are held in place in a like manner on a cut-ting table by means of a vacuum-suction device. Through the use of this cutting unit, and utilizing modern control techniques, it is not necessary then to establish the cutting line of the pat-tern as an uninterrupted line free of crosses and explore this line by means of a tracing device, giv~n that in the latter pro-cess, according to the so-called NC control, all of the position-ing and control data are stored as digital signals and are pro-cessed by a data processor for the purpose of generating the con-trol signals necessary for the drive motors of the cutting tool and the tool carrier. Similar machines have been disclosed, for example, in U.S. Patent No. 3,511,124, 3,715,945 and 3,776,072.
,~
~Z78506 The cutting head on the cutting tool itself is a costly mechanism to manufacture, which requires a tool carrier which ls housed and works with an up-down movement for housing the blade, a first drive for the generating of the up and down movement and a second drive for the rota-tion of the tool carrier, as well as a third drive for the raising of the complete cutting head during its movement along the X and Y direction regarding the cutting table, as well as gears for the transmission of all of these movements. See DE Patent No. 26 14 347.
A construction of this type is also inconvenient from the point of view of its large mass, given that during the cut-ting movements and along the cutting lines, this must accelerate and stop constantly, entirely independent of the fact that its maintenance is also burdensome and costly.
~7~506 In light of ever-increasing costs, there is a consider-able demand for inexpensive installations for automatically cut-ting pieces of material or cloth to order.
The present invention remedies this problem by provid-ing a drive system for the cutting part and thus create a process for automatically cutting pieces of material to order from a band of material, that is to say, to establish considerably simpler procedures than those which have been used to date.
According to the present invention there is provided a process for cutting pieces of material to order from a piece of material having at least one layer on a cutting table having a vacuum installation for holding the band of material in place and a slide moving lengthwise and crosswise of the cutting table as a carrier for a cutting tool, the movements of which, along the cutting llnes, are controlled by a data processor which processes the marking data and the data control, the cutting tool being driven by ultrasound and an endless conveyor belt with a syn-thetic fiber base, the individual fibers of which are approxi-mately 0.5 mm in diameter and 5 mm in length, for transporting the band of material in the cutting area and as a cutting base, and through a step-by-step movement of the conveyor belt with a wide range, which, for the finished cut of a piece of material, is greater than the maximum movement of the cutting tool in the longitudinal direction, which is moved, in each case, only fol-lowing the transport phase with the conveyor belt, stationary along the cutting lines. Suitably the cutting movements are car-ried out perpendicularly to the surface that serves as the base for the material to be cut and are produced by an ultrasonic gen-erator.
The present invention also provides a cutting table and a carrier moveable lengthwise and crosswise of the cutting table for the cutting tool, the movements of which, along the desired cu'ting lines, are controlled by a data processor which is numer-~2'7~ )6 ical and which processes the marking data and control data, a vacuum installation for holding the band of material in place on the cutting table, a cutting tool which is knife-shaped, which is fitted with an ultrasonic generator and a non-stop conveyor belt which serves as a cutting table, with synthetic fibers running in the same direction as the cutting and which are approximately 0.5 mm in diameter and 5 mm in length, which is guided step by step, at least, through a transport area and a wide-range cutting area, which for the finished cut of a piece of material, is greater than the maximum cutting movement of the cutting tool in the lon-gitudinal direction. Suitably the cutting tool has one edge per-pendicular to the cutting surface and is housed to be rotatable around the axis, which is also perpendicular to the cutting sur-face. Desirably the cutting tool has one edge which forms an angle with the cutting sur~ace and is housed to be rotatable around an axis that is perpendicular to the cutting surface.
In one embodiment of the present invention the swing amplitude of the ultrasonic emitter has dimensions which allow the blade to penetrate the surface of the cutting table on cut-ting the band of material. Suitably the blade, a coupling ele-rnent and the ultrasonic emitter comprise a cutting unit which is housed to be moved vertically, and which is located on a disc comprised of a cogwheel, the bearing of which has a hollow cen-tral axle, which surrounds the coupling element, the hollow axleof which is housed rotating on a crossbar ~olned to carrier.
Preferably a regulating cylinder is assigned to the cutting group. Suitably the hollow axle has a presser-bar that is spring-loaded, in the area in which the blade passes through.
~ - 5 -~X7~1~06 Through the utilization, in accordance with the inven-tion, of a ultrasonic generator as the drive system for the cut-ting part and the configuration of the non-stop conveyor belt as the step-by-step connection part, at the same time used as a fixed cutting table during the cutting process, on which the band of material to be cut is held in place, spread out, by means of a vacuum installation, it is possible to cut a band of material with the required precision, in a considerably faster and simpler way than has been used to date, and achieve the desired cuts to order.
Regarding the cutting systems known, in which the blade stroke amounts to approximately 15-20 mm, here it is between 2 and 3, with an approximate maximum of 5 mm. For this purpose, the cutting movement frequency is much grater than in known sys-tems. The height of the fibers on the brush surface can thus be considerably reduced regarding the presently-known systems, which provides for considerable savings.
Another advantage to be considered is the fact that the regulation of the cutting tool around axis X is much simpler to carry out than it has been to date, and because the vertical movement along axis Z can take place with the blade stopped, con-trary to the known systems, in which the cutting tool, when on run free, that is to say, at maximum speed, is moved from one piece to another, thus with the process of cutting to order requiring a high capacity for free run.
The moveable carriers coordinated with the area for cutting to order are controllable by means of a data-control pro-cessor NC, in such a way - in the X and Y direction - that the cutting head can reach any d~signated point on the surface of the band of material.
The controlling signal for the direct current motors that move the carriers are generated in the so-called cutting line generators, thus making the directions of the movements and the accelerations and speeds controllable within ample limits.
In this way, it is possible to profitably cut different materials with NC control, such as: fabric, paper, cardboard, plastic and similar materials, material in the shape of bands in individual layers or also in multiple layers, for the purpose of which the material to be cut can be processed from a roll or as a flat sheet.
The present invention will be further illustrated in the following by way of an example of the process, by way of the accompanying schematic drawings, in which:-Figure 1 is a perspective drawing of a machine con-trolled by NC controls for the cutting of pieces of material from a band of material according to the invention;
Figure 2 is a diagram of a vacuum device of the machine according to Figure 1 from a side view, holding a band of mate-rial in place during the cutting process;
Figure 3 i.s a perspective drawing of a drive device for the carrier of the machine according to Figure 1, the cutting head carrier;
Figure 4 is the cutting tool for the machine according to Figure 1, in diagram form;
~278~6)6 Figure 5 is a second way in which the cutting tool can operate, according to Figure 4, in diagram form;
Figure 6 is the cutting head for the machine according to Figure 1, in a perspective drawing; and Figure 7 is in diagram form, a partial cross-section of a side view of the cutting head according to Figure 6.
In Figure 1, a machine for automatically cutting to order, for example with NC controls, which is defined along gen-eral lines with reference number 20, is represented. A material (24) to be cut is on the cutting surface (26), also defined as the cutting table.
~78506 The cutting surface is comprised of a type of brush surface ~28) (Figures 4 and 5) of synthetic fibers, approximately 0.5 mm thick and 5 mm in length, which is air-permeable, which covers the entire cu-ttiny surface and upon which the vacuum acts, which is generated by means of a generator (40~ (Fiyure 2).
_ g _ ~X78~i~6 A cutting head (81) which holds the cu-tting tool (106) still to be descrlbed, is housed and moves in the X and Y direc-tions, which coincide with the lengthwise and crosswise direc-tions of the cutting surface (26). ~s is shown in detail in Fig-ure 3, a carrier (49) has been designed, which is fundamentallymoveable in the X direction and a carrier (62), moveable in the ~
direction. The X carrier (49) slides along rails (64), which are arranged in parallel to one another in the cutting area ~26), while carrier Y'S movement is crosswise and that of carrier x is lengthwise. Given that the movement in both directions takes place according to the same principle, only the movement in direction X is described here.
B
~78~;06 rhe drive of the carrier in direction X is comprised of a direct current nlol:ur (6G), located at the front part of the cutting area, a tacllometer (63) and a position reyulator (70), which is controlled by a position servoregulator, not sho~^/n here. Through a reducing gear (72-74), the motor (66) moves on an axle (76), which is pro-jected cross~ise through the cutting table, over which a nonstop conveyor belt is guided, which supports the brush surface (28).
At the free ends of the axle, there are toothed pulleys (78,80), by oeans of wllich the toothed belts (82,84) are guided, nonstop, whicll are kept taut by means of the toothed pulleys (86,88). The X carrier (49) is screwed to the toothed pulleys (84), through which it is synchronized in movement with the belts (~2,84).
On carrier X (~9), there is a direct current motor (90), a tach-ometer (92), a position regulator (94), a gear (96,98) with drive pulleys (100), a toothed belt (102) and a tensing roller (104), which serve to drive carrier Y (62~. The movements in direction Y
are controlled in the same way that it is done in direction X, by means of c coordinated regulation of the position, for which pur-pose the habilitation signals for the X and Y regulation coils, in addition to the cutting tool (106) for the movement, rotation, around axle Z located perpendicularly to the cutting surface (26) are generated in a control apparatus ~18).
AS is shown in Figure 4, the cutting tool (106) has one edge (108) which is oriented exactly in the direction of axle Z, perpendicular to the cutting s face (26), around which the cutting tool (106) rotates. In this way, the length of the edge of the blade (108) only has to be longer by a short safety distance, - reference num--~ 27850Ç;
. r 112,- measuring approximately 2 - 3 mm longer than the pile (24a) of material to be cut. In this way, it is assured that, along the full length, the blade does not penetrate the cut ting surface (26).
According to a second example of the working of the invention,we use a cutting tool (116) designed in a different way, principally, when few layers of cloth are to be cut~ This cutting tool (116) is shown in Figure 5 and has one edge (118~, which is located un-der a slight cutting angle ( ~ ) regarding the cutting sur.face (26).
This angle is smaller than the right angle, which is formed by the edge (108) in Figure 4, regarding the cutting surface (26).
This arrangement make; the cutt.ing easier and enhances the move-ment of the tool.
Although it may depend on the cutting to be done, the cutting tool can vary, the drive in the form of a transducer (30) (emitter) is th~ same, see Figure 7. By means of the transducer, the cutting tool is started vibrating from 20 to 40 Khz, with amplitudes of from a few hundreths to a few tenths of a millimeter, with higher or lower intensities, depending upon the material and the beight of the cut, utilizing for this process the general principles of an ultrasonic procedure, as is, in itsel~, already known. For this purpose, an ultrasonic generator (31) (Figure 1) is provided for, not shown in greater detail, which generates a sequence of electri-cal signals, which are transmitted by means of a cable (32) (Figures 6 and 7) and a so-called convertor (34) of tne transducer, which con-vert the electrical signals into mechanical vibrations, which are transmitted to a booster (36), which has the special shape as seen . .
~ Z~8~;~6 '3 Figure 7. A booster of this type is a mechanical amplifier.
Lastly> the transducer (30) also includes a ~Sonotrode~ (38), on which the cutting tool is mounted. Here, ultrasonic energy is used.
One part of this is represented by the blade. The geometric forms can also vary regarding the shape shown, depending upon the cut-t;ng tool, to thus achieve an ideal adaptation, the booster and the ~Sonotrode thus form a coupling element.
In Figures 6 and 7, other details of the cutting head are shown.
In these figures, one can see a motor (60), which serves to adjust the blade around axle Z. The motor (60) drives the cutting group defined in conjunction w;th 73 by means of cogwheels (63 and 65), See Figure 7. For this purpose, the cogwheel (65) used as a pulley is joined to a hollow axle (67), rotating in a housing on the ball bearings (69 and 71), which, in turn, are located on the cross-bar (66) of the unit (73). The crossbar (66) is joined to the Y
carrier (62). Also see Figure 3. A carrier (75), working in an up and down movement, mounted on the crossbar (61), positioned on the cogwheel (65), supports_the ultrasonic emitter or tran~ducer (30) and can be moved by means of a cylinder (77). The cutting head (81) is thus moveable in the X or Y direction by means of carriers X and Y, descr;bed in relation to Figure 3; and in direction Z, fundamental-ly only the cutting tool, by means of carrier Z (75), previously des-cribed in relation to Figure 7, while the rotation of the cutting tool around axle Z takes place by means of the motor (60) ~`-The control in the control apparatus (18) must be-set in such a-way that the rotation around axle Z is not over 360 or 2 x 360~, for the purpose of avoiding a crossing Gf the cables and feeder lines;
J the contrary, rotating joints would have to be used. However, the cutting head has to be able to mvoe within these limits and with a free-run movement - for this purpose, without any cutting movements - to adopt the 0 position.
Although the possibility does also exist of using sliprings as couplers for the cables and feeder lines.
h~
The cutting ~h~d, according to Figure 7, also has a presser bar (79), by means of which the material to be cut, for example a cloth, is pressed down slightly,by the action of a spring (83),against the cutting surface ~26).
The pressure bar is mounted on the hollow axle (67) in the area of the pas~ing blade (106). The spring (83) is supported by a base (89), also mounted on the hollow axle.
Claims (9)
1. A process for cutting pieces of material to order from a piece of material having at least one layer on a cutting table having a vacuum installation for holding the band of mate-rial in place and a slide moving lengthwise and crosswise of the cutting table as a carrier for a cutting tool, the movements of which, along the cutting lines, are controlled by a data proces-sor which processes the marking data and the data control, the cutting tool being driven by ultrasound and an endless conveyor belt with a synthetic fiber base, the individual fibers of which are approximately 0.5 mm in diameter and 5 mm in length, for transporting the band of material in the cutting area and as a cutting base, and through a step-by-step movement of the conveyor belt with a wide range, which, for the finished cut of a piece of material, is greater than the maximum movement of the cutting tool in the longitudinal direction, which is moved, in each case, only following the transport phase with the conveyor belt, sta-tionary along the cutting lines.
2. A procedure, according to claim 1, in which the cutting movements are carried out perpendicularly to the surface that serves as the base for the material to be cut and are pro-duced by an ultrasonic generator.
3. A device for carrying out the process of cutting pieces of material to order, from a band of material, according to claim 1, comprising a cutting table and a carrier moveable lengthwise and crosswise of the cutting table for the cutting tool, the movements of which, along the desired cutting lines, are controlled by a data processor which is numerical and which processes the marking data and control data, a vacuum installa-tion for holding the band of material in place on the cutting table, a cutting tool which is knife-shaped, which is fitted with an ultrasonic generator and a non-stop conveyor belt which serves as a cutting table, with synthetic fibers running in the same direction as the cutting and which are approximately 0.5 mm in diameter and 5 mm in length, which is guided step by step, at least, through a transport area and a wide-range cutting area, which for the finished cut of a piece of material, is greater than the maximum cutting movement of the cutting tool in the lon-gitudinal direction.
4. A device according to claim 3, in which the cutting tool has one edge perpendicular to the cutting surface and is housed to be rotatable around the axis, which is also perpendicu-lar to the cutting surface.
5. A device according to claim 3, in which the cutting tool has one edge which forms an angle with the cutting surface and is housed to be rotatable around an axis that is perpendicu-lar to the cutting surface.
6. A device according to claim 3, in which the swing amplitude of the ultrasonic emitter has dimensions which allow the blade to penetrate the surface of the cutting table on cut-ting the band of material.
7. A device according to claim 6, in which the blade, a coupling element and the ultrasonic emitter comprise a cutting unit which is housed to be moved vertically, and which is located on a disc comprised of a cogwheel, the bearing of which has a hollow central axle, which surrounds the coupling element, the hollow axle of which is housed rotating on a crossbar joined to carrier.
8. A device according to claim 6, in which a regulat-ing cylinder is assigned to the cutting group.
9. A device according to claim 6 or 7, in which the hollow axle has a presser-bar that is spring-loaded, in the area in which the blade passes through.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES543.394 | 1985-05-22 | ||
| ES543394A ES8706339A1 (en) | 1985-05-22 | 1985-05-22 | Apparatus for cutting sheet material having one or more layers. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1278506C true CA1278506C (en) | 1991-01-02 |
Family
ID=8489244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000508715A Expired - Lifetime CA1278506C (en) | 1985-05-22 | 1986-05-08 | Procedure for automatically cutting pieces of material to order, using a band of material and a device for carrying out the procedure |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0202676B1 (en) |
| JP (1) | JPS6219397A (en) |
| AT (1) | ATE60536T1 (en) |
| CA (1) | CA1278506C (en) |
| DE (2) | DE3530886A1 (en) |
| DK (1) | DK164086C (en) |
| ES (1) | ES8706339A1 (en) |
| FI (1) | FI82812C (en) |
| IE (1) | IE57384B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823945A (en) * | 2018-07-02 | 2018-11-16 | 江苏湛德医疗用品有限公司 | A kind of nonwoven production process folding cutting system |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH052317Y2 (en) * | 1986-03-14 | 1993-01-20 | ||
| DE3739201C3 (en) * | 1987-11-19 | 1996-06-13 | Duerkopp Adler Ag | Contour cut |
| JPH01301096A (en) * | 1988-05-30 | 1989-12-05 | Tachibana Seisakusho:Kk | Cutting device for sheetlike material and cutter therefor |
| JPH071278Y2 (en) * | 1988-07-28 | 1995-01-18 | ウシオ株式会社 | Punching unit for punching device |
| DE4240933C3 (en) * | 1992-12-04 | 2002-11-07 | Weissenberger Ag Rebstein | Device for producing passepartouts for pictures or documents |
| ATE237436T1 (en) * | 1996-10-31 | 2003-05-15 | Ima Spa | DEVICE FOR PRODUCING CLOTHING FABRIC GOODS OF A SPECIFIED SIZE WITHOUT GENERATING STRUCTURAL TENSION IN THE FABRIC MATERIAL |
| IT1317442B1 (en) * | 2000-05-02 | 2003-07-09 | Comelz Spa | CUTTING GROUP FOR SLABS IN GENERAL AND IN PARTICULAR LEATHER AND SIMILAR. |
| US20050081692A1 (en) * | 2003-10-20 | 2005-04-21 | Kraft Foods Holdings, Inc. | Ultrasonic slitter |
| ES2246129B1 (en) * | 2004-03-24 | 2006-11-01 | Equipment Poler, S.L. | TISSUE CUTTING SYSTEM. |
| JP4804808B2 (en) * | 2005-06-14 | 2011-11-02 | 株式会社ヒューマンテック | Machine tool and method |
| US7588438B2 (en) * | 2005-11-01 | 2009-09-15 | The Board Of Regents, The University Of Texas System | System, method and apparatus for fiber sample preparation for image analysis |
| CN101775740B (en) * | 2010-03-12 | 2012-04-11 | 长春际华三五零四职业装有限公司 | Cloth clamping device for automatic cutting bed and automatic cutting bed |
| JP5697419B2 (en) * | 2010-12-08 | 2015-04-08 | 株式会社ナムックス | Cutting device |
| CN104294575B (en) * | 2014-09-30 | 2017-12-05 | 长园和鹰智能科技有限公司 | The calibration method of automatic cutting machines and the automatic cutting machines with calibration function |
| DE102018210741A1 (en) * | 2018-06-29 | 2020-01-02 | Robert Bosch Gmbh | cutter |
| AT521720A1 (en) | 2018-10-01 | 2020-04-15 | Gfm Gmbh | Process for cutting edge bevels of plate-shaped workpieces |
| CN110000842A (en) * | 2019-04-26 | 2019-07-12 | 天津宏光伟业激光科技有限公司 | A kind of vibrating blade cutting mechanism and cutting machine |
| CN110016797B (en) * | 2019-05-04 | 2024-01-26 | 重庆工业职业技术学院 | Tailoring operation table convenient for clothing design |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3327747A (en) * | 1965-10-24 | 1967-06-27 | Weyerhaeuser Co | Method of and apparatus for kerfless cutting of wood |
| DE1053151B (en) * | 1954-02-27 | 1959-03-19 | Paul E Kempkes | Device for cutting soft, fibrous material, especially food, paper and the like. like |
| US3817141A (en) * | 1971-11-24 | 1974-06-18 | S Simonetti | Ultrasonically driven cutting knife and method and apparatus for cutting a soft yielding bakery product |
| GB1543258A (en) * | 1976-03-24 | 1979-03-28 | Gerber Garment Tech Inc | Apparatus for cutting sheet material |
| DE2817382B2 (en) * | 1978-04-20 | 1980-07-24 | Stumpf, Guenter O., 7421 Mehrstetten | Device for cutting a web-shaped material, in particular for an automatic fabric cutting machine |
| ES8101972A1 (en) * | 1979-01-31 | 1980-12-16 | Gerber Garment Technology Inc | Apparatus and method for working on successive segments of sheet material |
| DE2908701A1 (en) * | 1979-03-06 | 1980-09-11 | Guenter O Stumpf | DEVICE FOR RECEIVING AND FASTENING RAIL-SHAPED MATERIAL, IN PARTICULAR OF SEVERAL MULTIPLE STRUCTURAL MATERIALS, FOR A CUTTING MACHINE |
| US4327615A (en) * | 1980-05-05 | 1982-05-04 | Gerber Garment Technology, Inc. | Method and apparatus for cutting sheet material with preprocessed data |
| US4373412A (en) * | 1980-07-10 | 1983-02-15 | Gerber Garment Technology, Inc. | Method and apparatus for cutting sheet material with a cutting wheel |
| FR2498514B1 (en) * | 1980-11-14 | 1986-12-26 | Gerber Garment Technology Inc | APPARATUS AND METHOD USING ULTRASOUND TO CUT SHEET MATERIAL |
| US4391170A (en) * | 1981-01-12 | 1983-07-05 | Gerber Garment Technology, Inc. | Apparatus for working on advancing sheet material |
| US4596171A (en) * | 1983-10-19 | 1986-06-24 | Gerber Garment Technology, Inc. | Method and apparatus for ultrasonically cutting sheet material |
-
1985
- 1985-05-22 ES ES543394A patent/ES8706339A1/en not_active Expired
- 1985-08-29 DE DE19853530886 patent/DE3530886A1/en not_active Withdrawn
-
1986
- 1986-05-08 CA CA000508715A patent/CA1278506C/en not_active Expired - Lifetime
- 1986-05-12 FI FI861976A patent/FI82812C/en not_active IP Right Cessation
- 1986-05-14 DK DK224586A patent/DK164086C/en not_active IP Right Cessation
- 1986-05-21 AT AT86106923T patent/ATE60536T1/en not_active IP Right Cessation
- 1986-05-21 EP EP86106923A patent/EP0202676B1/en not_active Expired - Lifetime
- 1986-05-21 DE DE8686106923T patent/DE3677255D1/en not_active Expired - Lifetime
- 1986-05-21 IE IE1346/86A patent/IE57384B1/en not_active IP Right Cessation
- 1986-05-22 JP JP61118986A patent/JPS6219397A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823945A (en) * | 2018-07-02 | 2018-11-16 | 江苏湛德医疗用品有限公司 | A kind of nonwoven production process folding cutting system |
| CN108823945B (en) * | 2018-07-02 | 2024-04-12 | 江苏湛德医疗用品有限公司 | Folding tailoring system in non-woven fabric production process |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0202676A2 (en) | 1986-11-26 |
| ES8706339A1 (en) | 1987-07-01 |
| FI82812B (en) | 1991-01-15 |
| IE861346L (en) | 1986-11-22 |
| EP0202676A3 (en) | 1987-08-26 |
| EP0202676B1 (en) | 1991-01-30 |
| FI82812C (en) | 1991-04-25 |
| DE3530886A1 (en) | 1986-11-27 |
| ATE60536T1 (en) | 1991-02-15 |
| JPS6219397A (en) | 1987-01-28 |
| FI861976A0 (en) | 1986-05-12 |
| IE57384B1 (en) | 1992-08-12 |
| DE3677255D1 (en) | 1991-03-07 |
| DK164086C (en) | 1992-10-12 |
| ES543394A0 (en) | 1987-07-01 |
| DK164086B (en) | 1992-05-11 |
| DK224586A (en) | 1986-11-23 |
| FI861976A (en) | 1986-11-23 |
| DK224586D0 (en) | 1986-05-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |