EP2911842B1 - Blade-holder head - Google Patents

Blade-holder head Download PDF

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Publication number
EP2911842B1
EP2911842B1 EP13830040.5A EP13830040A EP2911842B1 EP 2911842 B1 EP2911842 B1 EP 2911842B1 EP 13830040 A EP13830040 A EP 13830040A EP 2911842 B1 EP2911842 B1 EP 2911842B1
Authority
EP
European Patent Office
Prior art keywords
blade
holder head
lubrication
outer sleeve
duct
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.)
Active
Application number
EP13830040.5A
Other languages
German (de)
French (fr)
Other versions
EP2911842A2 (en
Inventor
Fabrizio SANGALLI
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.)
FK Group Srl
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FK Group Srl
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Publication date
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Publication of EP2911842A2 publication Critical patent/EP2911842A2/en
Application granted granted Critical
Publication of EP2911842B1 publication Critical patent/EP2911842B1/en
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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
    • B26D7/088—Means for treating work or cutting member to facilitate cutting by cleaning or lubricating
    • 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
    • B26F1/382—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 wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
    • 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
    • B26F2001/388—Cutting-out; Stamping-out controlling the blade orientation along the cutting path

Definitions

  • the present invention concerns a blade-holder head for cutting textile or cloth materials on automatic spreading tables.
  • a head that uses a rectilinear blade having alternate movements.
  • This head besides being susceptible to translations in parallel and orthogonal planes with respect to the spreading table, is also susceptible to rotations around a vertical axis to be able to change the forward movement of the blade and make the cut according to the desired trend.
  • the blade does in any case need to be correctly supported, guided and lubricated to ensure and maintain its cutting efficiency. Furthermore, because the head has a revolving part, or rotor, to permit the above-mentioned directionality of the blade with a degree of freedom of 360°, it is not easy to convey the lubricating fluid to the cutting end of the blade.
  • US3830122 discloses an example of an apparatus for dispensing a liquid onto a tool.
  • the object of the present invention is to propose a blade-holder head able to support, guide and lubricate or cool the cutting blade in a perfect way, while at the same time improving the lightness and the overall dimensions of the head itself.
  • reference numeral 1 indicates a blade-holder head according to the invention as a whole.
  • the blade-holder head 1 is suitable for supporting a rectilinear blade 2 having alternate movements along a blade axis X for cutting textile or cloth materials stretched on a spreading table.
  • the blade-holder head 1 comprises first blade guide means 10 suitable for supporting the cutting blade 2 through a plurality of contact points distanced along the blade axis X.
  • the first blade guide means 10 comprise a vertical plate 12 from which extend three blade supports 13 distanced in height, each bearing a pair of rollers with horizontal rotation axis or other means of blade support and guide.
  • the first blade guide means 10 are fixed to a guide support body 14, e.g., by means of the vertical plate 12.
  • a presser disc 16 is connected at the bottom to said blade support body 10 with the possibility of alternate axial movement by means of a respective actuator (not shown). Said presser disc 16 supports second blade guide means 18 aligned with said first blade guide means and suitable for supporting and guiding the lower end of the blade 2.
  • a command unit 20 is fitted on an upper crosspiece 22 of the guide support body 14.
  • Said command unit 20 comprises a rotor body 24 suitable for rotating around said rotation axis parallel with said blade axis, and a stationary outer sleeve 26, placed coaxially around said rotor body 24.
  • friction reduction means e.g., at least a ball bearing 30.
  • the rotor body 24 comprises a hollow guide unit 32 bearing third blade guide means 34, i.e., upper blade guide means, suitable for supporting and guiding an upper portion of the cutting blade 2.
  • the rotor body 24 also comprises, for its rotation, an outer flange 36 bearing a pulley 38, the stationary outer sleeve 26 being placed between said pulley 38 and said hollow guide unit 32.
  • the outer flange 36 has a concave shape, i.e., cup shape, defining, with the hollow guide unit 32, an annular seat on which is housed the stationary outer sleeve 26.
  • the outer flange 36 has a threaded side wall 36' for its screwing up into a respective threaded seat 22' made in the upper crosspiece 22 of the guide support body 14.
  • annular seats 40 wherein are housed respective seals 42 cooperating with the rotor body 32. Between said annular seats 40 is made a lubrication chamber 44 forming part of the lubrication circuit described below.
  • the guide support body 14 has an overturned "L" shape.
  • said body comprises a side 14' with vertical extension, to which the first blade guide means 10 are fixed and having a height substantially equal to that of said first blade guide means, and the upper crosspiece 22 which extends from the upper end of said side 14'.
  • the blade-holder head 1 has a lubrication circuit suitable for lubricating the cutting end of the blade 2.
  • Said circuit comprises an entrance hole 50 made in the stationary outer sleeve 26 and suitable for coupling with the lubricant inlet fitting 52.
  • Said entrance hole 50 is in fluidic communication with the annular lubrication chamber 44 made in the outer sleeve.
  • a first lubrication duct 54 is made in the rotor body 32 and in fluidic communication with said annular chamber 44.
  • a second lubrication duct 56 in fluidic communication with said first duct 54 extends through the guide support body 14.
  • a third lubrication duct 58 is made in the presser disc 16 in fluidic communication with said second duct and coming out next to the cutting end of the blade 2.
  • the second lubrication duct 56 comprises a coiled tube 56' which extends from the upper crosspiece 22 to the presser disc 16.
  • said coiled tube 56' is connected to a coiled tube fitting 60 accommodated in the upper crosspiece 22 and communicating with the first lubrication duct 54.
  • the other end of the coiled tube 56' is connected to a disc inlet fitting 62, installed on the presser disc 16.
  • the third lubrication duct 58 comprises two branches 64 which extend from the disc inlet fitting 62 and which come out on opposite sides of the blade.
  • the described blade-holder head therefore permits lubricating the cutting end of the cutting blade with a particularly lightweight and compact head structure, where the stationary part, wherein the lubrication chamber is made, is reduced to the sole outer sleeve.
  • Such sleeve as can also be appreciated by the drawings, has a small axial dimension, which does not affect the total height of the head.
  • the use of the coiled lubrication tube advantageously permits the axial movements of the presser disc to which it is connected.
  • the reduction in overall height dimensions of the command unit permits optimizing the blade support and guide, increasing the height extension of the first guide means and/or the number of contact points with the blade.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Support Devices For Sliding Doors (AREA)

Description

  • The present invention concerns a blade-holder head for cutting textile or cloth materials on automatic spreading tables.
  • To perform this operation, among the other cutting means, a head is already known that uses a rectilinear blade having alternate movements. This head, besides being susceptible to translations in parallel and orthogonal planes with respect to the spreading table, is also susceptible to rotations around a vertical axis to be able to change the forward movement of the blade and make the cut according to the desired trend.
  • The blade does in any case need to be correctly supported, guided and lubricated to ensure and maintain its cutting efficiency. Furthermore, because the head has a revolving part, or rotor, to permit the above-mentioned directionality of the blade with a degree of freedom of 360°, it is not easy to convey the lubricating fluid to the cutting end of the blade. US3830122 discloses an example of an apparatus for dispensing a liquid onto a tool.
  • The object of the present invention is to propose a blade-holder head able to support, guide and lubricate or cool the cutting blade in a perfect way, while at the same time improving the lightness and the overall dimensions of the head itself.
  • Said object is achieved using a blade-holder head according to claim 1. The dependent claims describe preferred embodiments of the invention.
  • The characteristics and the advantages of the blade-holder head according to the invention will in any case appear evident from the description provided below of its preferred embodiments, provided by way of example only and in a non-limitative way, with reference to the attached drawings, wherein:
    • The figure 1 is an axial section of the blade-holder head according to the invention; and
    • The figure 2 is a perspective view of the head from below.
  • In said drawings, reference numeral 1 indicates a blade-holder head according to the invention as a whole. The blade-holder head 1 is suitable for supporting a rectilinear blade 2 having alternate movements along a blade axis X for cutting textile or cloth materials stretched on a spreading table.
  • In the remainder of the description, reference will be made, for easier exposition, to the blade-holder head 1 in its position of use on a horizontal spreading table, therefore with vertical blade. In this condition, the blade axis X can therefore be deemed vertical.
  • In a general embodiment, the blade-holder head 1 comprises first blade guide means 10 suitable for supporting the cutting blade 2 through a plurality of contact points distanced along the blade axis X. For example, the first blade guide means 10 comprise a vertical plate 12 from which extend three blade supports 13 distanced in height, each bearing a pair of rollers with horizontal rotation axis or other means of blade support and guide.
  • The first blade guide means 10 are fixed to a guide support body 14, e.g., by means of the vertical plate 12.
  • A presser disc 16 is connected at the bottom to said blade support body 10 with the possibility of alternate axial movement by means of a respective actuator (not shown). Said presser disc 16 supports second blade guide means 18 aligned with said first blade guide means and suitable for supporting and guiding the lower end of the blade 2.
  • For the rotation of the blade-holder head 1 around a vertical rotation axis, e.g., coinciding with the blade axis X, a command unit 20 is fitted on an upper crosspiece 22 of the guide support body 14. Said command unit 20 comprises a rotor body 24 suitable for rotating around said rotation axis parallel with said blade axis, and a stationary outer sleeve 26, placed coaxially around said rotor body 24. To allow the rotation of the rotor body 24 with respect to the stationary outer sleeve 26, between the former and the latter are placed friction reduction means, e.g., at least a ball bearing 30.
  • In one embodiment, the rotor body 24 comprises a hollow guide unit 32 bearing third blade guide means 34, i.e., upper blade guide means, suitable for supporting and guiding an upper portion of the cutting blade 2.
  • The rotor body 24 also comprises, for its rotation, an outer flange 36 bearing a pulley 38, the stationary outer sleeve 26 being placed between said pulley 38 and said hollow guide unit 32. More in detail, in one embodiment, the outer flange 36 has a concave shape, i.e., cup shape, defining, with the hollow guide unit 32, an annular seat on which is housed the stationary outer sleeve 26.
  • In one embodiment, the outer flange 36 has a threaded side wall 36' for its screwing up into a respective threaded seat 22' made in the upper crosspiece 22 of the guide support body 14.
  • In one embodiment, in the stationary outer sleeve 26 are made two annular seats 40 wherein are housed respective seals 42 cooperating with the rotor body 32. Between said annular seats 40 is made a lubrication chamber 44 forming part of the lubrication circuit described below.
  • In one embodiment, the guide support body 14 has an overturned "L" shape. In other words, said body comprises a side 14' with vertical extension, to which the first blade guide means 10 are fixed and having a height substantially equal to that of said first blade guide means, and the upper crosspiece 22 which extends from the upper end of said side 14'.
  • According to one aspect of the invention, the blade-holder head 1 has a lubrication circuit suitable for lubricating the cutting end of the blade 2. Said circuit comprises an entrance hole 50 made in the stationary outer sleeve 26 and suitable for coupling with the lubricant inlet fitting 52. Said entrance hole 50 is in fluidic communication with the annular lubrication chamber 44 made in the outer sleeve.
  • A first lubrication duct 54 is made in the rotor body 32 and in fluidic communication with said annular chamber 44. A second lubrication duct 56 in fluidic communication with said first duct 54 extends through the guide support body 14. A third lubrication duct 58 is made in the presser disc 16 in fluidic communication with said second duct and coming out next to the cutting end of the blade 2.
  • In a preferred embodiment, the second lubrication duct 56 comprises a coiled tube 56' which extends from the upper crosspiece 22 to the presser disc 16. For example, said coiled tube 56' is connected to a coiled tube fitting 60 accommodated in the upper crosspiece 22 and communicating with the first lubrication duct 54.
  • In a preferred embodiment, the other end of the coiled tube 56' is connected to a disc inlet fitting 62, installed on the presser disc 16. Preferably, the third lubrication duct 58 comprises two branches 64 which extend from the disc inlet fitting 62 and which come out on opposite sides of the blade.
  • The described blade-holder head therefore permits lubricating the cutting end of the cutting blade with a particularly lightweight and compact head structure, where the stationary part, wherein the lubrication chamber is made, is reduced to the sole outer sleeve. Such sleeve, as can also be appreciated by the drawings, has a small axial dimension, which does not affect the total height of the head.
  • The use of the coiled lubrication tube advantageously permits the axial movements of the presser disc to which it is connected.
  • The reduction in overall height dimensions of the command unit permits optimizing the blade support and guide, increasing the height extension of the first guide means and/or the number of contact points with the blade.
  • The lightened and open structure of the blade-holder head, as well as the embodiment of the lubrication circuit, make the assembly and maintenance of the device particularly easy.
  • To the embodiments of the blade-holder head according to the invention, a man skilled in the field, to satisfy contingent requirements, can make changes, adaptations and replacements of parts with others of equivalent function, without departing from the scope of protection as defined by the appended claims. Each of the features described as belonging to a possible embodiment can be made separately from the other described embodiments.

Claims (7)

  1. Blade-holder head for a cutting machine of textile or cloth materials, comprising:
    - first blade guide means (10) suitable for supporting a cutting blade (2) with the possibility of alternate movement along a blade axis (X), said first blade guide means having a plurality of contact points with the blade (2) distanced along said blade axis (X);
    - a guide support body (14), to which said first blade guide means (10) are attached;
    - a presser disc (16) connected underneath said support body (14) with the possibility of alternate axial shifting, said presser disc supporting second blade guide means (18) aligned with said first blade guide means (10) ;
    - a command unit (20) mounted on an upper crosspiece (22) of the guide support body and comprising:
    - a rotor body (24) suitable for rotating around a rotation axis parallel to said blade axis,
    - a stationary outer sleeve (26), placed coaxially around said rotor body (24) with the interposition of friction reduction means (30), suitable for permitting the rotation of the rotor body (24) in relation to the outer sleeve (26);
    the blade-holder head being provided with a lubrication circuit suitable for lubricating the cutting end of the blade (2), the blade-holder head being characterised in that said lubrication circuit comprises:
    - an entrance hole (50) made in the stationary outer sleeve (26) and suitable for coupling to a lubricant inlet fitting (52);
    - a hermetically sealed annular lubrication chamber (44) made in the outer sleeve (26) in fluidic communication with said entrance hole (50);
    - a first lubrication duct (54) made in the rotor body (24) and in fluidic communication with said annular chamber (44);
    - a second lubrication duct (56) in fluidic communication with said first duct (54) and extending through the guide support body (14) and
    - a third lubrication duct (58) made in the presser disc (16) in fluidic communication with said second duct (56) and coming out next to the cutting end of the blade (2).
  2. Blade-holder head according to claim 1, wherein said rotor body (24) comprises a hollow guide unit (32) bearing third blade guide means (34), and an outer flange (36) bearing a pulley (38) for the rotation of the rotor body (24), the stationary outer sleeve (26) being placed between said pulley (38) and said guide unit (32).
  3. Blade-holder head according to the previous claim, wherein said outer flange (36) is screwed into a respective threaded seat (22') made in the upper crosspiece (22) of the guide support body (14).
  4. Blade-holder head according to any of the previous claims, wherein the guide support body (14) is an overturned "L" shape.
  5. Blade-holder head according to the previous claim, wherein the second lubrication duct (56) comprises a coiled tube (56') which extends from the upper crosspiece (22) to the presser disc (16).
  6. Blade-holder head according to any of the previous claims, wherein the third lubrication duct (58) comprises two branches (64) which extend from a disc inlet fitting (62) and which come out on opposite sides of the blade.
  7. Blade-holder head according to any of the previous claims, wherein two annular seats (40) are made in the stationary outer sleeve (26) which respective gaskets cooperating with the rotor body are housed in, the lubrication chamber (44) being made between said annular seats (40).
EP13830040.5A 2012-10-26 2013-10-10 Blade-holder head Active EP2911842B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000150A ITBS20120150A1 (en) 2012-10-26 2012-10-26 BLADE DOOR HEAD
PCT/IB2013/059270 WO2014064568A2 (en) 2012-10-26 2013-10-10 Blade-holder head

Publications (2)

Publication Number Publication Date
EP2911842A2 EP2911842A2 (en) 2015-09-02
EP2911842B1 true EP2911842B1 (en) 2017-02-15

Family

ID=47388520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13830040.5A Active EP2911842B1 (en) 2012-10-26 2013-10-10 Blade-holder head

Country Status (6)

Country Link
EP (1) EP2911842B1 (en)
KR (1) KR102139588B1 (en)
CN (1) CN104955622B (en)
ES (1) ES2625122T3 (en)
IT (1) ITBS20120150A1 (en)
WO (1) WO2014064568A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3106079B1 (en) * 2020-01-15 2022-01-21 Holding Financiere Ciuch En Abrege H F C INSTALLATION AND METHOD FOR CUTTING AND/OR PRE-CUTTING BOXES BY PERFORATION
IT202100023564A1 (en) * 2021-09-13 2023-03-13 Atom Spa DEVICE FOR CLEANING AND DIMENSIONAL DETECTION OF THE BLADE IN CUTTING MACHINES
FR3136186B1 (en) * 2022-06-07 2024-05-31 Himber Tech Cutting device for making a cut in the wall of a box.
IT202200013096A1 (en) 2022-06-21 2023-12-21 Fk Group S P A MACHINE FOR AUTOMATIC CUTTING OF FLAT PIECES AND RELATED METHOD
IT202200013102A1 (en) 2022-06-21 2023-12-21 Fk Group S P A DRILLING AND/OR DIE CUTTING UNIT

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US1172058A (en) * 1912-12-16 1916-02-15 Emanuel Scheyer Automatically-controlled mechanism.
US1958912A (en) * 1932-01-02 1934-05-15 Eastman Machine Co Knife moistening appliance for fabric cutting machines
US3830122A (en) * 1973-03-26 1974-08-20 Gerber Garment Technology Inc Apparatus for dispensing a liquid onto a tool
DE3422570A1 (en) * 1984-06-18 1985-12-19 Wilhelm Bilstein Spezialfabrik für Rundmesser und Plattenventile, 5063 Overath Blade holder for a shear blade on reel slitting machines
US5609082A (en) * 1993-03-25 1997-03-11 Gerber Garment Technology, Inc. Lubrication aid for treating cutting blade and sharpener
GB2295788A (en) * 1994-12-07 1996-06-12 Brian Kevin Porter A lubrication device for a fabric cutter
KR100506849B1 (en) * 2002-06-18 2005-08-08 홍면기 Tape guide device of automatic roll tape cutter
CN2894977Y (en) * 2005-10-19 2007-05-02 徐大鸿 Vertical high-precision polyurethane sheet automatic strip cutting machine
IT1400975B1 (en) * 2010-06-30 2013-07-05 Cavagna Elio Srl TOOL HOLDER FOR CUTTING MACHINES

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN104955622A (en) 2015-09-30
WO2014064568A3 (en) 2014-06-19
CN104955622B (en) 2017-03-22
ES2625122T3 (en) 2017-07-18
WO2014064568A9 (en) 2014-08-21
KR20160089268A (en) 2016-07-27
ITBS20120150A1 (en) 2014-04-27
EP2911842A2 (en) 2015-09-02
KR102139588B1 (en) 2020-07-31
WO2014064568A2 (en) 2014-05-01

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