US3730802A - Method of fixing pins in a matrix - Google Patents

Method of fixing pins in a matrix Download PDF

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Publication number
US3730802A
US3730802A US00018095A US3730802DA US3730802A US 3730802 A US3730802 A US 3730802A US 00018095 A US00018095 A US 00018095A US 3730802D A US3730802D A US 3730802DA US 3730802 A US3730802 A US 3730802A
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US
United States
Prior art keywords
pins
matrix
pin
holes
filling agent
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
Application number
US00018095A
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English (en)
Inventor
D Stewart
J Main
Mgb Duncan
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.)
WM R Stewart and Sons Ltd
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WM R Stewart and Sons Ltd
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 WM R Stewart and Sons Ltd filed Critical WM R Stewart and Sons Ltd
Application granted granted Critical
Publication of US3730802A publication Critical patent/US3730802A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/92—Attaching card clothing to carding elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056—Perforating lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
    • Y10T156/109—Embedding of laminae within face of additional laminae

Definitions

  • ABSTRACT A carding or a drawing machine wherein the pins are a non-interference fit within the pin holes in the cylinder or other matrix and are secured in position by an adhesive which may or may not. be a thermoplastic.
  • the uniformity and hence the quality of a fibrous product is directly related to accuracy in the position of the pin tip in relation to its locus point (where applicable) as well as to the surface of the matrix.
  • pin is used in the following description, but it is understood that this relates to any form of inserted article including pins, spikes, or spurs of any cross-section or shape, as well as staples and wedge headed spikes inserted in grooves and the like.
  • the conventional method of retaining the pins in a matrix is to drill or make holes smaller than the diameter of pin to be inserted so that the pin is an interference fit.
  • pin length there is always a variation in pin length and the fact that the pins are driven into their holes in the matrix by blows on the blunt end or base of each pin results in any such variation of length being reflected in the pin tip relationship to the surface of the matrix and to the locus point (where applicable).
  • a controlled degree of random irregularity can be introduced into the pattern of the pins while still retaining an accurate surface generated by the loci of the pin points as they more relative to the fibers or film. This random irregularity will help to ensure that each separate pin point will strike a fresh part of the film or mass of fibers, thus achieving an improved carding or combing action.
  • a method of inserting pins in a matrix comprises the steps of (i) forming holes in the matrix which are a clearance fit in relation to the pins to be inserted therein; (ii) aligning the pins on insertion thereof in endwise relation so that their pointed ends are presented uniformly or to a deliberately varied pattern, and (iii) securing the pins in position when so aligned by means of a filling agent which adheres to the surface of the pin or hole or both.
  • the matrix may be in the form of wood, metal and, in particular, aluminum alloy.
  • a carding element comprises a cylinder which may be open at each end and formed with through bores for the carding pins whereby the carding pins can be set in the bores or withdrawn therefrom by entering or removing them from the outside inwardly or from the inside outwardly, the pins, which are a clearance fit, being fixed in position in their bores with a fixing agent.
  • the ability of the pin to remain in the matrix under load conditions is of prime importance and the shear strength of the fixing agent can be varied to suit design requirements. In most applications it is advantageous to be able to remove damaged and worn pins.
  • the method of fixing of this invention also permits the pin to be removed with ease, using a predetermined force, thereby eliminating the tendency to break and/or bend pins due to the excessive grip traditional in the old method. Because of the larger hole prepared initially, the hole surface remains undamaged and of unaltered diameter, consequently allowing re-pinning with pins of the same diameter, whereas traditional methods required frequent increase of the pin diameter.
  • FIGS. 1 and 2 are profile explanatory views
  • FIGS. 3 and 4 are views similar to those of FIGS. 1 and 2 but in which the bases of the pins do not protrude beyond the surface of the matrix;
  • FIG. 5 are scrap views showing the probable defects of traditional pinning together with the beneficial effect of the fixing agent in this respect;
  • FIG. 6 is a sectional view on an enlarged scale to show the improved contours which are now possible by building up the fixing agent at the root of the pin to produce a rounded-off rose-thorn" shape;
  • FIGS. 7 and 8 are further explanatory views
  • FIGS. 9 and 10 are diagrammatic sectional views of carding machine rollers which have been pinned in accordance with the invention.
  • FIG. 10 also shows the bearing mountings.
  • M indicates a matrix in which have been inserted a series of pins P.
  • the pins are shown out of line at their pointed ends, which occurs when inserted by percussion according to existing practice.
  • the pins are not an interference fit and have been aligned in accordance with the invention, being held in position within their respective holes within the matrix M by fixing material F.
  • F fixing material
  • the pins are inserted in their respective rows in a stave bar or other matrix and having been aligned the fixing agent is applied to one or both surfaces of the matrix and run into the holes, heat, if necessary, being such as to set or fix the fixing agent.
  • the resultant profile is such as would be produced when using the traditional percussion method of fixing pins into a matrix. It is consequent that any irregularity in the taper of the pin or bell-mouthing of the hole will leave an annular space which will grip the passing fibers and thereby cause ringing.
  • the pins P and the addition of the fixing agent F to the root area in accordance with this invention there is produced a smooth surface of the matrix at the base of the pins as shown at S in FIG. 4 to the exclusion of the fault previously described. This is particularly important where the surface of the matrix is curved or in the case of pins which are inserted at acute angles.
  • FIGS. 5 and 6 illustrate that it is possible by controlling the amount or thickness of the fill-in agent F to modify or control the profile of the pin.
  • the fill-in material has been given a curved profile C.
  • three different types of pin which are a friction drive-in fit may not subtend the same angle at the point indicated by arrow L which may vary considerably.
  • FIG. 7 the invention is shown applied to a knockout type pin wherein H indicates a hammer or punch for the removal of the pins.
  • the pins P have a tail R of reduced cross-section but as shown in chain lines in FIG. 7, the pins may be of uniform section throughout. It has also proved possible to build up conventional pins having a parallel shank in such a manner that the fixing agent F adheres to the pin and creates a knock-out shape (see FIG. 7). Even in the case of the pin held without any protruding tall as shown in FIG. 8, its removal can be facilitated by arranging that the grip of the pin to the matrix, i.e., the bond between the fixing agent and the matrix, is only sufficient to maintain it in position during working.
  • the pins By inserting the pins in the cylinder of a rotary carding or metering machine it has the advantage that not only can the pins be accurately set in position but the pins density can be increased and, furthermore, the pin arrangement can be completely uniform or, when required, have a selected or so-called random pattern of the pin length measured from pin point to base along the row of pins or of the pin angles.
  • the cylinder which may be open at each end, is mounted for rotation on bearings at each end or by means of end plates to which it is releasably secured, the end plates in turn being mounted in or on suitable supporting bearings.
  • the carding element comprises a cylinder C which is open at each end and in which are bores B for the pins P. It will be understood that the bores B may be arranged in parallel rows, pins in adjacent rows being in staggered formation as required.
  • FIG. 9 shows an alternative arrangement wherein the cylinder C is formed at each end with a counterbore J for engagement with a disc or flange K fast on a spindle A. It will be understood that by detachably connecting the cylinder C to its end plate or disc D, the cylinder can be removed for the purpose of re-pinning.
  • End plate D' has a similar but larger aperture G in which is engaged a flanged driving frusto-conical adaptor 0, drive being imparted to the cylinder via pins N on the flange thereof engaging slots in the end plate D
  • the force required to remove any pin can be predetermined and can be maintained accurately, which is of material importance as one of the major costs in re-pinning is the removal of a fairly small percentage of pins which have become jammed in the hole, and which often break over or burred furred
  • the fixing agent the product sold under the Trademark LOCTITE has been found to be most suitable, but any of the epoxy resins (i.e. CIBA ARALDITE) or even an adhesive such as SECOTINE could be used. It has been stated that pins are a clearance fit in their holes; experiments have indicated that the hole should be approximately 10 percent larger in diameter than the pin. This, however, is also governed by the depth of the hole relative to the diameter.
  • the invention is applicable to the pinning of thin in addition to thick-walled metallic and non-metallic tubes without the associated problems of distortion as described earlier, affording a high degree of pin-point positional accuracy when using sharp or blunt pointed pins.
  • the method of pin insertion of this invention eliminates distortion of the matrix with the consequent achievement of high pin point positional accuracy when inserting card, hackle, faller, comb pins, rag teeth, staples and/or pins of any cross-sectional shape.
  • the surface of the cylinder or tube is continuous circumferentially (and no longer divided into narrow longitudinal slats) it is possible to achieve a truly random pattern of pin point location by sinuating or otherwise irregular drilling of the rows of holes in such a way that successive rows are no longer parallel to each other.
  • the distance between adjacent pins in a row can also be made irregular and as the pins are in the first instance inserted as a loose fit in the drilled hole, the pin axis can be allowed to deviate from the true axial direction of the hole within controlled limits thus achieving a truly random pattern of pin points in a radial circumferential and/or lateral directions relative to the rollers while at the same time retaining a uniform density of points per unit area.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US00018095A 1969-03-10 1970-03-10 Method of fixing pins in a matrix Expired - Lifetime US3730802A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1247869 1969-03-10
GB31091/69A GB1298561A (en) 1969-03-10 1969-03-10 Improvements relating to carding, drawing and other machines and a method of fixing pins in a matrix

Publications (1)

Publication Number Publication Date
US3730802A true US3730802A (en) 1973-05-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00018095A Expired - Lifetime US3730802A (en) 1969-03-10 1970-03-10 Method of fixing pins in a matrix

Country Status (8)

Country Link
US (1) US3730802A (nl)
BE (1) BE747158A (nl)
CH (1) CH552687A (nl)
DE (1) DE2011373C3 (nl)
ES (1) ES377348A1 (nl)
FR (1) FR2037850A5 (nl)
GB (1) GB1298561A (nl)
NL (1) NL160035C (nl)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837416A (en) * 1972-07-14 1974-09-24 Mitsubishi Steel Mfg Balance using a beam type load cell
US4058965A (en) * 1974-07-03 1977-11-22 Platt Saco Lowell Limited Open-end spinning machines
US4508179A (en) * 1982-06-11 1985-04-02 Lely Cornelis V D Soil cultivating implements
US4797979A (en) * 1986-07-08 1989-01-17 Maschinenfabrik Rieter Ag Arrangement for supplying a fiber processing machine
US5295284A (en) * 1990-03-16 1994-03-22 Maschinenfabrik Rieter Ag Ultra-high performance carding machine
US6219885B1 (en) 1997-02-24 2001-04-24 Maschinenfabrik Rieter Ag High performance card
CN103911694A (zh) * 2014-04-03 2014-07-09 湖州厉华妤婕联合纺织有限公司 一种梳针替换结构
CN104032416A (zh) * 2014-05-26 2014-09-10 苏州潮盛印花制版实业有限公司 一种刺针长度可调刺辊装置
CN108823704A (zh) * 2018-07-06 2018-11-16 海盐县秦山镇兴达纺针制造厂 一种麻纺用并条机和粗纱机钢针及采用该钢针的针芯（座）
CN110725077A (zh) * 2019-09-27 2020-01-24 郑培智 一种纱线残余清理的纺织机针座

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1545535A (en) * 1976-10-04 1979-05-10 Stewart & Sons Ltd W Opening roller for open-end spinning machine
GB1592857A (en) * 1976-12-22 1981-07-08 Stewart & Sons Hacklemakers Cutting device
DE19631809A1 (de) * 1996-08-07 1998-02-12 Gerald Koinzer Nadelbelag
GB2323099B (en) 1997-03-15 2001-07-04 Stewart & Sons Wm R Fibre processing apparatus
GB9815582D0 (en) * 1998-07-18 1998-09-16 Wm R Stewart Hacklemakers Ltd Fibre processing apparatus
GB2393971B (en) * 2002-10-07 2005-12-07 Wilkie J & D Ltd Apparatus for use in changing the condition of a product

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060074A (en) * 1958-02-27 1962-10-23 Pratt Read & Co Inc Method of making plastic covered keys for musical instruments
US3355342A (en) * 1965-02-26 1967-11-28 Armorlite Lens Company Inc Method of supporting lens blanks for grinding and polishing
US3482125A (en) * 1963-04-29 1969-12-02 Licentia Gmbh Adhesive soaked absorbent layer for centering and joining components together
US3516884A (en) * 1966-03-28 1970-06-23 Excel Corp Method of bedding panels into frames using an adhesive coated preform

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060074A (en) * 1958-02-27 1962-10-23 Pratt Read & Co Inc Method of making plastic covered keys for musical instruments
US3482125A (en) * 1963-04-29 1969-12-02 Licentia Gmbh Adhesive soaked absorbent layer for centering and joining components together
US3355342A (en) * 1965-02-26 1967-11-28 Armorlite Lens Company Inc Method of supporting lens blanks for grinding and polishing
US3516884A (en) * 1966-03-28 1970-06-23 Excel Corp Method of bedding panels into frames using an adhesive coated preform

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837416A (en) * 1972-07-14 1974-09-24 Mitsubishi Steel Mfg Balance using a beam type load cell
US4058965A (en) * 1974-07-03 1977-11-22 Platt Saco Lowell Limited Open-end spinning machines
US4508179A (en) * 1982-06-11 1985-04-02 Lely Cornelis V D Soil cultivating implements
US4797979A (en) * 1986-07-08 1989-01-17 Maschinenfabrik Rieter Ag Arrangement for supplying a fiber processing machine
US5295284A (en) * 1990-03-16 1994-03-22 Maschinenfabrik Rieter Ag Ultra-high performance carding machine
US6219885B1 (en) 1997-02-24 2001-04-24 Maschinenfabrik Rieter Ag High performance card
CN103911694A (zh) * 2014-04-03 2014-07-09 湖州厉华妤婕联合纺织有限公司 一种梳针替换结构
CN103911694B (zh) * 2014-04-03 2015-12-16 湖州厉华妤婕联合纺织有限公司 一种梳针替换结构
CN104032416A (zh) * 2014-05-26 2014-09-10 苏州潮盛印花制版实业有限公司 一种刺针长度可调刺辊装置
CN104032416B (zh) * 2014-05-26 2016-06-01 苏州潮盛印花制版实业有限公司 一种刺针长度可调刺辊装置
CN108823704A (zh) * 2018-07-06 2018-11-16 海盐县秦山镇兴达纺针制造厂 一种麻纺用并条机和粗纱机钢针及采用该钢针的针芯（座）
CN110725077A (zh) * 2019-09-27 2020-01-24 郑培智 一种纱线残余清理的纺织机针座
CN110725077B (zh) * 2019-09-27 2021-04-23 郑培智 一种纱线残余清理的纺织机针座

Also Published As

Publication number Publication date
CH552687A (fr) 1974-08-15
NL160035C (nl) 1979-09-17
GB1298561A (en) 1972-12-06
FR2037850A5 (nl) 1970-12-31
ES377348A1 (es) 1973-01-01
DE2011373C3 (de) 1979-03-29
NL7003407A (nl) 1970-09-14
DE2011373B2 (de) 1978-07-27
DE2011373A1 (nl) 1970-09-24
NL160035B (nl) 1979-04-17
BE747158A (fr) 1970-09-10

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