GB2264900A - Print-head-carriage mounted paper cutter. - Google Patents

Print-head-carriage mounted paper cutter. Download PDF

Info

Publication number
GB2264900A
GB2264900A GB9303289A GB9303289A GB2264900A GB 2264900 A GB2264900 A GB 2264900A GB 9303289 A GB9303289 A GB 9303289A GB 9303289 A GB9303289 A GB 9303289A GB 2264900 A GB2264900 A GB 2264900A
Authority
GB
United Kingdom
Prior art keywords
cutting
cutting wheel
slider
lever
print head
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
Application number
GB9303289A
Other versions
GB9303289D0 (en
GB2264900B (en
Inventor
Dieter Stellmach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of GB9303289D0 publication Critical patent/GB9303289D0/en
Publication of GB2264900A publication Critical patent/GB2264900A/en
Application granted granted Critical
Publication of GB2264900B publication Critical patent/GB2264900B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/66—Applications of cutting devices
    • B41J11/70—Applications of cutting devices cutting perpendicular to the direction of paper feed
    • B41J11/706—Applications of cutting devices cutting perpendicular to the direction of paper feed using a cutting tool mounted on a reciprocating carrier
    • 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
    • B26D1/12—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 cutting member moving about an axis
    • B26D1/14—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/20—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a fixed member
    • B26D1/205—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a fixed member for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/42—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between work feed and clamp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handling Of Sheets (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Description

1 --- A CUTTING DEVICE FOR FORM WEBS 2264900 This invention relates to a
cutting device for use with printers and, in particular, to a cutting device for form webs.
German Patent 3510995 describes a cutting device for form webs which is located o n the print bead carriage of a printer, the print head of which can be moved across the width of the form web between two side plates. The device comprises a cutting wheel arranged on a pivotable lever, which wheel can be raised by the movement of the print head carriage and can be placed against a fixed counter-cutting edge of the printer. The cutting wheel can be moved between an inoperative, raised position offset from the counter-cutting edge into an operative position by means of a control device which can be controlled by two lateral stops. The control device consists of a slider mounted to be movable in the direction of movement of the print head carriage, which slider is provided with a curved guide for a pin. A cam follower is provided on the cutting wheel.
Although the known cutting device has proved successful and is in use in a large number of printers, it has been found that the overall width is considerably affected by the control device, and that the curved guide and the cam follower increase the overall width.
A cutting device for form webs which, in use, is located on a print head carriage of a printer, the print head of which can be moved across the width of the form web, in accordance with the invention, includes a cutting wheel rotatably mounted on a spindle and carried on a Ushaped pivotable lever, the wheel being driveable by the movement of the print head carriage and moveable between an inoperative, raised position offset from the printer counter-cutting edge and an operative position on the counter-cutting edge by means of a control device comprising a slider moveable in the directions of movement of the print head carriage and having, at its end regions, straight guide recesses for guide pins attached to the print head carriage and, in a central region, a control 2 recess for the cutting wheel spindle, the cutting wheel lever being rotatably mounted on one of the guide pins, a cam located in a recess of a print head carriage, the cutting wheel spindle extending through an arm of the lever with its end, which forms the cam follower, lying against the cam and a pre-bent leaf sprig which supports the cutting wheel, on the side remote from the cam, axially against the other arm of the cutting wheel lever.
Amongst the advantages of this are that the cutting device is more compact overall than the known device, above all has a lesser width, and more economic production is ensured as a result of a reduction in the number of individual parts. Accordingly, a reduction in weight and hence a reduction in the mass moved is also achieved.
The advantages achieved include in particular that, due to the shifting of the cam into the print head carriage, the overall width can be reduced such that the cutting device can be arranged entirely within the profile of the carriage guide. At the same time, only four essential parts are required, so the cutting device can additionally be produced extremely economically. If the four parts are relatively thin, in addition the mass which has to be moved is considerably reduced compared with the known cutting device.
Advantageously the cutting wheel lever is provided at its end remote from the guide pin with a collared pin which can be pivoted into and out of an angular recess in the slider such that the slider is guided on the collared pin at least during the sliding movements. In this manner, accurate guidance of the very thin-walled parts is provided.
The leaf spring may be supported with one end region on the slider and lie with the other end region on the end face of the collared pin of the cutting wheel lever. This makes it possible for the leaf spring to duplicate movements of the slider or of the cutting wheel lever or to offset relative movements to the slider or to the cutting 3 wheel lever. The leaf spring therefore moves correspondingly to the movement of the slider and the movement of the cutting wheel.
A nipple-like bead may be formed on one of the end regions of the leaf spring, facing the slider, which bead,. in the operative, cutting position of the slider, engages in the straight guide recess. Due to this engagement, the position of the cutting wheel during cutting can be fixed.
A further improvement results if the guide pin of the cutting wheel lever, which engages in a straight guide recess of the slider, lies in front of the axis of rotation of the cutting wheel in the direction of cutting. The advantage of this is an improved cutting action of the cutting wheel.
Suitably a bore for the cutting wheel spindle is made on the U-shaped cutting wheel lever as a round hole on one arm and as an elongate hole on the other arm. The advantage of this is that the cutting wheel can readily be pivoted about its spindle so that a setting angle to the fixed counter-cutting edge and accordingly an improved cutting action is always produced.
The U-shaped cutting wheel lever may have a bore in its central region in one arm in which a bushing for the rotary mounting of the cutting wheel spindle is secured, the bushing at the same time being guided on the outer periphery thereof in the control recess of the slider. The bushing consequently permits firstly an axial movement of the cutting wheel spindle and secondly a sliding movement on the outer periphery thereof.
The invention will now be described with reference to the accompanying drawings in which:- Figure 1 is a rear view of a cutting device in accordance with the invention with the cutting wheel in the inoperative position; Figure 2 is a rear view of the cutting device of Figure 1 in the operative position; 4 Figure 3 is a top view of the cutting device taken in the direction of arrow A of F,,gure 1; and Figure 4 is a side view taken in the direction of arrow B of Figure 3 with the cutting wheel in the operative position.
The cutting device for form webs is located on a print head carriage 1 of a printer, e.g. a wire matrix printer, the print head (not shown) of which can be moved across the width of the form web between two side plates la. A cutting wheel 3 is arranged on a pivotable lever 2 which can be indirectly driven by movement of the print head carriaae I and can be placed on a fixed counter-cutting edge 4 of the printer. The cutting wheel 3 can be moved -ive, raised position offset from the between an inoperat counter-cutting edge 4 into an operative position by a control means 5 which is formed and can be controlled by two lateral stops 6. The control means 5 furthermore comprises a slider 8 mounted to be movable in the directions of movement 7 of the print head carriage 1, which slider is provided with a curved guide 9 for a round journal 10, with a cam follower 11 being provided for placing on the cutting wheel 3.
The slider 8 has in its end regions 8a and 8b straight guide recesses 12 for guide pins 13 attached to the print head carriage 1. In a central region 8c of the slider 8 there is provided a control recess 14 in the f orm of a curved guide 9 in such a manner that a cutting wheel spindle 15 can be raised or lowered along an incline after a short horizontal path. The cutting wheel 3 is rotatably mounted on the cutting wheel spindle 15. Furthermore, a U-shaped cutting wheel lever 16 is mounted to rotate on one of the guide pins 13. A cam 17 is located in a recess 18 in a print head carriage wall 19 (see Figure 4), with the end of the cutting wheel spindle 15, which forms the cam follower 11 and lies against the cam 17, penetrating through the arm 16b of the cutting wheel lever 16. On the side remote from the cam 17, the cutting wheel 3 is pressed axially against the other arm 16a of the cutting wheel lever 16 by means of a pre- bent leaf spring 20 and is supported thereby (Figure 1). The leaf spring 20 at the same time protects the slider 8 against unintentional movements during acceleration of the print head carriage 1 and thus acts as a friction brake. In the position of Figure 2, the leaf spring presses the cutting wheel 3 against the fixed counter-cutting edge 4.
The cutting wheel lever 16 is provided at its end 13a remote from guide pin 13 with a collared pin 21 which can be pivoted into an angular recess 22 in the slider 8 or can be pivoted out therefrom, so that the slider 8 is guided on the collared pin 21 at least during the sliding movements.
A bore 23 in the U-shaped cutting wheel lever 16 is formed as a round hole 25 on one arm 16a, and an elongate hole 26 on the other arm 16b. The cutting wheel 3, which is attached to a roller bearing 24, is accordingly positionable in the corresponding cutting position. The leaf spring 20, which is supported on one hand on the slider 8 in the region of the cutting wheel spindle 15 and on the other hand on the free end of the cutting wheel lever 16 and contains an opening therein through which the cutting wheel spindle 15 projects, produces a force which presses the cutting wheel 3 on the counter-cutting edge 4. At the same time, the cutting wheel 3 is capable of being set at a corresponding angled position relative the counter-cutting edge 4.
The leaf spring 20 thus lies with one end region 20a on the slider 8 and with the other end region 20b on an end face 21a of the collared pin 21 which is attached in the cutting wheel lever 16.
Furthermore, a nipple-shaped bead 27 is formed on one of the end regions 20a of the leaf spring, facing the slider 8, which bead engages in the straight guide recess 12 in the cutting position of the slider 8 and thus provides stability between the slider 8 and cutting wheel 6 lever 16 (Figure 2).
3 The guide pin 1 of the cutting wheel lever 16, which engages in a straight guide recess 12 in the slider 8, lies in the direction of cutting 28 in front of the axis of rotation 15 of the cutting wheel 3. This mounting is advantageous for the stability of the cutting wheel lever 16 in order to produce the desired cutting action of the cutting wheel 3.
The U-shaped cutting wheel lever 16 has a bore 29 in its middle region 16c in one arm 16a, in which bore a bushing 30 for the axial displacement of the cutting wheel spindle 15 is secured. The bushing 30 is guided on its outer periphery 30a in the control recess 14 of the slider 8. Therefore, while the bushing 30 is guided with its outer periphery 30a through the control recess 14, the cutting wheel spindle 15 is axially displaceable in the interior of the bushing 30. Furthermore, the axial movement of the cutting wheel spindle 15 is guided through the bushing 30. As can be seen f rom Figure 4, the cam follower 13. travels up and down the cam 17 and thereby produces the axial movement of the cutting wheel 3. The spindle 15 does not rotate, since it is prevented from rotating by the cam follower 11. However, the cutting wheel 3 rotates by means of the rolling bearing 24.

Claims (8)

1. A cutting device for form webs which, in use, is located on a print head carriage of a printer, the print head of which can be moved across the width of the form web, the device including a cutting wheel rotatably mounted on a spindle and carried on a Ushaped pivotable lever, the wheel being driveable by the movement of the print head carriage and moveable between an inoperative, raised position offset from the printer counter-cutting edge and an operative position on the counter-cutting edge by means of a control device comprising a slider moveable in the directions of movement of the print head carriage and having, at its end regions, straigfit guide recesses for guide pins attached to the print head carriage and, in a central region, a control recess for the cutting wheel spindle, the cutting wheel lever being rotatably mounted on one of the guide pins, a cam located in a recess of a print head carriage, the cutting wheel spindle extending through an arm of the lever with its end, which forms the cam follower, lying against the cam and a pre-bent leaf sprig which supports the cutting wheel, on the side remote from the cam, axially against the other arm of the cutting wheel lever.
2. A cutting device as claimed in Claim 1, wherein the cutting wheel lever is provided at an end thereof remote from the guide pin with a collared pin which can be pivoted into an angular recess in the slider or can be pivoted out therefrom, such that the slider is guided on the collared pin at least during the sliding movements.
3. A cutting device as claimed in Claim 2, wherein the leaf spring is supported with one end region on the slider and with the other end region on the end face of the collared pin of the cutting wheel lever.
4. A cutting device as claimed in Claim 3, wherein a nipple-shaped bead is formed on one of the end regions of the leaf spring facing the slider, which bead engages in the straight guide recess in the operative, cutting position of the slider.
5. A cutting device as claimed inany preceding Claim, wherein the cutting wheel lever guide pin lies in the direction of cutting in front of the axis of rotation of the cutting wheel.
6. A cutting device as claimed in any preceding Claim, wherein a bore for the cutting wheel spindle is provided in the cutting wheel lever c-omprising a round hole on one arm, and an elongate hole on the other arm.
7. A cutting device as claimed in any preceding Claim, wherein the U-shaped cutting wheel lever has a bore in one arm in which a bushing for axial displacement of the cutting wheel spindle is secured, the bushing being guided on the outer periphery thereof in the control recess of the slider.
8. A cutting device substantially as hereinbefore described and illustrated in the accompanying drawings.
GB9303289A 1992-02-21 1993-02-18 a cutting device for printers. Expired - Fee Related GB2264900B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4205774A DE4205774C2 (en) 1992-02-21 1992-02-21 Cutting device for form webs

Publications (3)

Publication Number Publication Date
GB9303289D0 GB9303289D0 (en) 1993-04-07
GB2264900A true GB2264900A (en) 1993-09-15
GB2264900B GB2264900B (en) 1995-12-13

Family

ID=6452540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9303289A Expired - Fee Related GB2264900B (en) 1992-02-21 1993-02-18 a cutting device for printers.

Country Status (4)

Country Link
DE (1) DE4205774C2 (en)
FR (1) FR2687607A1 (en)
GB (1) GB2264900B (en)
IT (1) IT1263609B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532930C1 (en) * 1995-09-06 1997-04-17 Siemens Nixdorf Inf Syst Printer with cutting function
DE20212425U1 (en) * 2002-08-13 2003-12-24 Psi Printer Systems International Gmbh Printer with a cutter for paper webs
JP7068571B2 (en) * 2017-12-28 2022-05-17 スター精密株式会社 Printer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7713410U1 (en) * 1977-04-28 1977-08-18 Adlerwerke Vorm. Heinrich Kleyer Ag, 6000 Frankfurt CUTTING DEVICE FOR PAPER TRAILS, IN PARTICULAR IN PRINTING UNITS OF DATA PROCESSING SYSTEMS
EP0029122B1 (en) * 1979-11-10 1983-06-29 International Business Machines Corporation Cutting apparatus for an intermittently movable web
DE3141457A1 (en) * 1981-10-19 1983-05-05 GARDENA Präzisionstechnik GmbH, 7907 Niederstotzingen Device for switching on a cutting roller
DE3510995A1 (en) * 1985-03-27 1986-10-09 Mannesmann Kienzle GmbH, 7730 Villingen-Schwenningen CUTTING DEVICE FOR FORM RAILWAYS

Also Published As

Publication number Publication date
GB9303289D0 (en) 1993-04-07
ITMI930320A1 (en) 1994-08-19
DE4205774C2 (en) 1994-06-16
DE4205774A1 (en) 1993-08-26
GB2264900B (en) 1995-12-13
FR2687607A1 (en) 1993-08-27
ITMI930320A0 (en) 1993-02-19
IT1263609B (en) 1996-08-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20040218