EP0037805A1 - Cutting machine - Google Patents
Cutting machine Download PDFInfo
- Publication number
- EP0037805A1 EP0037805A1 EP81850058A EP81850058A EP0037805A1 EP 0037805 A1 EP0037805 A1 EP 0037805A1 EP 81850058 A EP81850058 A EP 81850058A EP 81850058 A EP81850058 A EP 81850058A EP 0037805 A1 EP0037805 A1 EP 0037805A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- cutting
- cutting machine
- spindles
- spindle
- 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
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/16—Cutting rods or tubes transversely
-
- 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
- B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
- B26D7/0616—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by carriages, e.g. for slicing machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C1/00—Making tubes or pipes by feeding at right angles to the winding mandrel centre line
Definitions
- the present invention relates to a cutting machine for cardboard tubes.
- an audit strip is printed or typed on paper delivered in rolls and wound on a tube.
- Cardboard tubes are used in other areas as well, for example in shutgun shells, fireworks etc. The demands placed on such tubes are quite high and both the length and diameter must have exact dimensions.
- Tube manufacture is described per se in our own Swedish Patent Specification 7902333-9, according to which papertube blanks are wound on a spindle in long lengths which are then cut in a cutting machine to exact lengths. These can vary from less than 1 cm up to 15-20 cm or longer.
- the cutting machine according to the invention is a further development of the cutting machine described in our above- mentioned patent, but it is of course not limited to use in connection with our tube machine; rather it can be used for spiral-wound tube blanks or for completely different purposes as well.
- tube blanks are slipped on a spindle, cut with rotating knives and then pulled off the spindle.
- the cutting machine according to the invention has instead four spindles and therefore permits an appreciably higher cutting speed and a supplementary calibration function.
- Fig. 1 shows a longitudinal section of the cutting machine according to the invention
- Fig. 2 shows a cross section along the line II-II in Fig. 1
- Fig. 3 is a schematic representation of the operating cycle
- Four spindles, 1-4 with the same diameter as the inner diameter of the tubes to be manufactured, are rotatably mounted on a stepwise rotatable turret 5.
- the turret 5 is fixed to a shaft 6 mounted in a bearing housing 7.
- a ratchet device for the shaft 6 is also arranged in the bearing housing, so that the shaft can be turned in steps of exactly 90° in response to control impulses from a control unit 8.
- the spindles each have a short guide pin 9 at the end.
- a tube blank is calibrated on spindle 2.
- a calibrating pipe 20 or a calibrating ring is slidably mounted in a housing 22 on two uprights 23 in front of the spindle 2.
- a pneumatic cylinder 25 presses the rod 24 and the calibrating pipe 20 forward, the sliding rod stopping against the end of the spindle 2 with the guide pin 9 fitting into a corresponding hole 26 at the front of the rod.
- the calibrating pipe 20 which is bevelled 27 at the front, is then pulled over the tube blank 10 and then returned.
- the tube blank is prevented from being drawn along with the pipe in the return movement by the front end of the rod.
- the rod 24 follows along in the movement thus freeing the guide pin 9.
- the tubes are cut to the desired length, and the outer endswhich may be damaged during calibration are cut off.
- a motordriven, rapidly rotating cutting spindle 30 with a number of blades 31, is pressed against the tube blank 10 on spindle 3, at the same time as a supporting center 32 with a hole 33 for the guide pin 9 is advanced into engagement.
- the spindle 3 is supported in this manner and support rollers can also be placed in contact with the tube blank opposite to the cutting spindle.
- the spindle 3 is rotatably mounted in the turret 5, it can rotate by itself so that the cuts are made around the entire circumference, but it can also be driven via one of the support rollers or via the support center 32.
- the supporting center is retracted as are the cutting spindle and the supporting rollers through the operation of pneumatic cylinders.
- the machine is operated by a control unit 8 sending impulses to pneumatic cylinders.
- a control unit 8 sending impulses to pneumatic cylinders.
- pneumatic cylinders have been mentioned as operating means, but electromagnetic or electric means or hydraulic cylinders can of course be used, even if pneumatic means have proved to be simplest in our machines which are primary operated pneumatically.
- the cutting machine according to the invention has appreciable advantages over cutting machines which we have used previously.
- the exact calibration and the improved exactness of the tubes in spite of the use of poorer paper qualities, has very great importance for its use.
- both shutgun shells and tubes for paper rolls for a telex apparatus are very sensitive to even quite small unevenness.
- the cutting machine has also been a bottleneck in tube manufacture, since an ordinary cutting spindle can only make about 20 strokes per minute.
- the cutting machine according to the invention has two additional spindles, which theoretically produces a tripling of the possible speed. In practice, however, the possible speed is even greater, since the shifting between the various steps proceeds more rapidly than the previous ejecting of cut tubes and putting on of a new tube blank. At present, the machine is driven at about 40 strokes per minute, but a capacity of 60-70 strokes per minute has been shown to be possible, even for extended operation.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Details Of Cutting Devices (AREA)
Abstract
Description
- The present invention relates to a cutting machine for cardboard tubes.
- In various office machines, calculators, book-keeping machines, cash registers, telex machines etc., an audit strip is printed or typed on paper delivered in rolls and wound on a tube. Cardboard tubes are used in other areas as well, for example in shutgun shells, fireworks etc. The demands placed on such tubes are quite high and both the length and diameter must have exact dimensions.
- Tube manufacture is described per se in our own Swedish Patent Specification 7902333-9, according to which papertube blanks are wound on a spindle in long lengths which are then cut in a cutting machine to exact lengths. These can vary from less than 1 cm up to 15-20 cm or longer.
- The cutting machine according to the invention is a further development of the cutting machine described in our above- mentioned patent, but it is of course not limited to use in connection with our tube machine; rather it can be used for spiral-wound tube blanks or for completely different purposes as well.
- In our previous cutting machine, tube blanks are slipped on a spindle, cut with rotating knives and then pulled off the spindle.
- The cutting machine according to the invention has instead four spindles and therefore permits an appreciably higher cutting speed and a supplementary calibration function.
- The invention will be described in detail in connection with the accompanying drawings of which Fig. 1 shows a longitudinal section of the cutting machine according to the invention, Fig. 2 shows a cross section along the line II-II in Fig. 1, and Fig. 3 is a schematic representation of the operating cycle, Four spindles, 1-4 with the same diameter as the inner diameter of the tubes to be manufactured, are rotatably mounted on a stepwise
rotatable turret 5. Theturret 5 is fixed to ashaft 6 mounted in a bearing housing 7. A ratchet device for theshaft 6 is also arranged in the bearing housing, so that the shaft can be turned in steps of exactly 90° in response to control impulses from acontrol unit 8. The spindles each have ashort guide pin 9 at the end. - When cutting tube blanks, four operations are performed simultaneously, one on each spindle.
-
Long tube blanks 10 from the winding machine are collected in a hopper'll in front of the spindles arranged so that the lowest tube blank lies right in front of the spindle 1. Apusher 12 ontube guides 13 pushes the lowermost tube blank on to the spindle 1 and then withdraws to its resting position, being driven by apneumatic cylinder 14. - At the same time a tube blank is calibrated on
spindle 2. A calibratingpipe 20 or a calibrating ring is slidably mounted in ahousing 22 on twouprights 23 in front of thespindle 2. There is a slidingrod 24 inside the calibrating pipe. Apneumatic cylinder 25 presses therod 24 and thecalibrating pipe 20 forward, the sliding rod stopping against the end of thespindle 2 with theguide pin 9 fitting into acorresponding hole 26 at the front of the rod. The calibratingpipe 20 which is bevelled 27 at the front, is then pulled over the tube blank 10 and then returned. The tube blank is prevented from being drawn along with the pipe in the return movement by the front end of the rod. In the last part of the calibration stroke, when thepipe 20 has left the tube blank 10, therod 24 follows along in the movement thus freeing theguide pin 9. - Calibration evens out and smooths the tube and gives it an exact outer dimension, which is essential for its future use. Small variations in thickness can otherwise arise, caused by unevenness in the paper thickness and by the final wound edge. Less expensive, less even and poorer quality paper can thus be used for tubes, which will still be more exact than tubes made of the best available paper qualities but made in the usual manner.
- On spindle 3, the tubes are cut to the desired length, and the outer endswhich may be damaged during calibration are cut off.
- A motordriven, rapidly rotating
cutting spindle 30 with a number ofblades 31, is pressed against the tube blank 10 on spindle 3, at the same time as a supportingcenter 32 with ahole 33 for theguide pin 9 is advanced into engagement. The spindle 3 is supported in this manner and support rollers can also be placed in contact with the tube blank opposite to the cutting spindle. By virtue of the fact that the spindle 3 is rotatably mounted in theturret 5, it can rotate by itself so that the cuts are made around the entire circumference, but it can also be driven via one of the support rollers or via thesupport center 32. After the cutting is complete, the supporting center is retracted as are the cutting spindle and the supporting rollers through the operation of pneumatic cylinders. - Finally, in
position 4 twojaws 40 grasp around the innermost end of the spindle. The jaws are mounted on asliding rod 41 which is extended and pushes the cut tubes off thespindle 4. The tubes fall down into abin 43 arranged under the cutting machine and with a grill bottom with the mesh being large enough to allow the cut-off edge bits to fall through. The tubes are then ready for delivery. - As was mentioned above, the machine is operated by a
control unit 8 sending impulses to pneumatic cylinders. Such control of various machines is previously known per se, and is therefore not described in more detail here. Pneumatic cylinders have been mentioned as operating means, but electromagnetic or electric means or hydraulic cylinders can of course be used, even if pneumatic means have proved to be simplest in our machines which are primary operated pneumatically. - The cutting machine according to the invention has appreciable advantages over cutting machines which we have used previously. The exact calibration and the improved exactness of the tubes, in spite of the use of poorer paper qualities, has very great importance for its use. For example, both shutgun shells and tubes for paper rolls for a telex apparatus are very sensitive to even quite small unevenness. By moistening the tube blanks somewhat and calibrating at elevated temperature, for example 50-70°C, it is possible to achieve a tube with an evenness approaching that of a metal surface.
- The cutting machine has also been a bottleneck in tube manufacture, since an ordinary cutting spindle can only make about 20 strokes per minute. In addition to the new spindle for calibration, the cutting machine according to the invention has two additional spindles, which theoretically produces a tripling of the possible speed. In practice, however, the possible speed is even greater, since the shifting between the various steps proceeds more rapidly than the previous ejecting of cut tubes and putting on of a new tube blank. At present, the machine is driven at about 40 strokes per minute, but a capacity of 60-70 strokes per minute has been shown to be possible, even for extended operation.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8002467 | 1980-03-31 | ||
SE8002467A SE437350B (en) | 1980-03-31 | 1980-03-31 | SCREEN MACHINE FOR CUTTING THE SHELF |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0037805A1 true EP0037805A1 (en) | 1981-10-14 |
EP0037805B1 EP0037805B1 (en) | 1984-07-11 |
Family
ID=20340651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81850058A Expired EP0037805B1 (en) | 1980-03-31 | 1981-03-30 | Cutting machine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0037805B1 (en) |
DE (1) | DE3164664D1 (en) |
SE (1) | SE437350B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0115360A1 (en) * | 1983-01-22 | 1984-08-08 | Rolco International B.V. | Device for cutting an elongate paper roll |
EP0371936A2 (en) * | 1988-11-30 | 1990-06-06 | Mauro Lenzi | Machine for automatically cutting to sized length metallic tubular workpieces of toroidal form by exactly positioning each workpiece |
WO1994027812A1 (en) * | 1993-05-28 | 1994-12-08 | Aston Packaging Limited | Winding machine |
ITPG20120035A1 (en) * | 2012-09-07 | 2014-03-08 | Roberto Rossi | AUTOMATIC CUTTING SYSTEM FOR CARDBOARD AND PLASTIC TUBES WITH SETTING OF THE CUTTING MEASUREMENT AND AUTOMATIC COLLECTION FROM THE WAREHOUSE WITH CHOICE OF SPEED FORMAT IN THE FORMAT CHANGE. |
EP4159392A1 (en) * | 2021-09-30 | 2023-04-05 | CAVALIERI & AMORETTI S.r.l. | Apparatus and method for cutting a tubular cardboard rod |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3916685A1 (en) * | 1989-05-23 | 1990-11-29 | Rolf Leveringhaus | Dividing bands of adhesive tape into narrow spools - involves machine with sliding cutters working against number of tape band shafts |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1575894A (en) * | 1926-03-09 | A cobpobaxioh | ||
US3231445A (en) * | 1962-11-05 | 1966-01-25 | Dietz Machine Works Inc | Continuously rotating tube cutting and labeling machine |
FR1564868A (en) * | 1968-03-01 | 1969-04-25 | ||
FR1569763A (en) * | 1968-03-06 | 1969-06-06 |
-
1980
- 1980-03-31 SE SE8002467A patent/SE437350B/en not_active IP Right Cessation
-
1981
- 1981-03-30 DE DE8181850058T patent/DE3164664D1/en not_active Expired
- 1981-03-30 EP EP81850058A patent/EP0037805B1/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1575894A (en) * | 1926-03-09 | A cobpobaxioh | ||
US3231445A (en) * | 1962-11-05 | 1966-01-25 | Dietz Machine Works Inc | Continuously rotating tube cutting and labeling machine |
FR1564868A (en) * | 1968-03-01 | 1969-04-25 | ||
FR1569763A (en) * | 1968-03-06 | 1969-06-06 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0115360A1 (en) * | 1983-01-22 | 1984-08-08 | Rolco International B.V. | Device for cutting an elongate paper roll |
EP0371936A2 (en) * | 1988-11-30 | 1990-06-06 | Mauro Lenzi | Machine for automatically cutting to sized length metallic tubular workpieces of toroidal form by exactly positioning each workpiece |
EP0371936A3 (en) * | 1988-11-30 | 1991-04-10 | Mauro Lenzi | Machine for automatically cutting to sized length metallic tubular workpieces of toroidal form by exactly positioning each workpiece |
WO1994027812A1 (en) * | 1993-05-28 | 1994-12-08 | Aston Packaging Limited | Winding machine |
ITPG20120035A1 (en) * | 2012-09-07 | 2014-03-08 | Roberto Rossi | AUTOMATIC CUTTING SYSTEM FOR CARDBOARD AND PLASTIC TUBES WITH SETTING OF THE CUTTING MEASUREMENT AND AUTOMATIC COLLECTION FROM THE WAREHOUSE WITH CHOICE OF SPEED FORMAT IN THE FORMAT CHANGE. |
EP4159392A1 (en) * | 2021-09-30 | 2023-04-05 | CAVALIERI & AMORETTI S.r.l. | Apparatus and method for cutting a tubular cardboard rod |
Also Published As
Publication number | Publication date |
---|---|
DE3164664D1 (en) | 1984-08-16 |
SE8002467L (en) | 1981-10-01 |
SE437350B (en) | 1985-02-25 |
EP0037805B1 (en) | 1984-07-11 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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17P | Request for examination filed |
Effective date: 19820413 |
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ITF | It: translation for a ep patent filed |
Owner name: STUDIO TORTA SOCIETA' SEMPLICE |
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