US3596998A - Apparatus for continuous manufacture of cylindrical brushes - Google Patents

Apparatus for continuous manufacture of cylindrical brushes Download PDF

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Publication number
US3596998A
US3596998A US802826*A US3596998DA US3596998A US 3596998 A US3596998 A US 3596998A US 3596998D A US3596998D A US 3596998DA US 3596998 A US3596998 A US 3596998A
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US
United States
Prior art keywords
wires
bristles
blades
cylinder
conveyor belts
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
US802826*A
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English (en)
Inventor
Alfred Romanowski
Richard Weiss
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.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel 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
Priority claimed from DE19681632368 external-priority patent/DE1632368A1/de
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Application granted granted Critical
Publication of US3596998A publication Critical patent/US3596998A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/04—Machines for inserting or fixing bristles in bodies
    • A46D3/05—Machines for inserting or fixing bristles in bodies for fixing the bristles between wires, tapes, or the like

Definitions

  • Discontinuous and semicontinuous operating or manufacturing processes are known in which, in the case of discontinuous manufacture, wire lengths up to a maximum of approximately 2.5 feet and, in the case of semicontinuous manufacture, of approximately 5.0 feet, are tensioned parallel to one another in a twisting device, and are then supplied with the required bristles either manually by means of special pliers or, in the case of semicontinuous manufacture, automatically by means of a feeder mechanism.
  • a rotary drum turning in axial alignment with the two strands of wire containing the bristles therebetween has a gripping mechanism which grips the two strands of wire andpulls the wire through the drum, putting the wires in tension and while the drum rotates with the wires held rigidly by the gripping mechanism, imparts a twisting action to the two strands of wire about the equidistant common axis of the two strands with the bristles contained therebetween for that portion between the wire guide jaws and the gripping mechanism.
  • this means is used to draw the wires through the drum and out to a takeup device (not shown) or cut off to lengths desired.
  • Another embodiment employs another mechanical means of gripping the two strands of wire and applying tension and twisting at the same time.
  • the invention lies in the direct application of force to the two wires, thus, the improvement permits manufacturing of cylindrical brushes of very large diameter wire which in turn allows larger amounts of bristles per length, larger bristles and more durable product.
  • the force applied directly to the wires consists of an axial force as well as a radially inward force due to twisting. By this method the bristles are more securely held in place than in the method where twisting only is employed.
  • the tensile force applied makes the two wires taut and when the tensile force is released, a certain force is exerted against the bristles in return to normal so long as set does not take place because the yield point the metal was exceeded.
  • FIG. I is an elevation view of a wire twisting and bristle supply and feeder portions of a brush manufacturing machine in accordance with this invention
  • FIG. 2 shows in part the gripping elements of FIG. I in an axial and plan view
  • FIG. 3 is an elevation view of another embodiment of a gripping element
  • FIG. 4 is an axial view of the same gripping element in FIG. 3;
  • FIG. 5 is illustrative of a longitudinal and cross-sectional view of some of the variations of the manufactured product.
  • the manufacturing device illustrated in FIG. I comprises bristle hopper l for supplying bristles B to be used, cut to size, to metered feeder 2 which at a constant rate places the identical amount of bristles B onto transport feeder device 3.
  • Wire supply consists of two drums and provides strands of wire A and C from each drum 4 (one only of which is shown schematically) to a pair of wire guide jaws 5.
  • the transport feeder device 3 deposits bristles B between the two strands of wire A and C at the point where the two wires pass out of wire guide jaws 5. After the wires A and C, with bristles B therebetween, leave wire guide jaws 5, they undergo continuous twisting and stretching in drawoff device 6, and finally passing between the blades 7 of a length-cutting device by means of which the bristle-brush (shown in FIG. 5) lengths, required in the course of the particular production run for the most variegated applications can be controllably cut. Only the two knives 7 are schematically illustrated in FIG. I of the length-cutting device of known construction.
  • drawoff device 6 all of the aforementioned devices are known in the present state of the art and are already used in the manufacture of cylindrical brushes or other items.
  • Drawoff device 6 illustrated in FIG. 1 consists of two conveyor belts or chains 8 on which gripper blades 9 (shown in FIG. 2) have been mounted have an opening at one end contoured to be adapted to the sectional shape of wires A and C which are thereby securely held in order to be twisted. Accordingly, in addition to being rigidly secured for twisting, gripper blades 9 apply an axially longitudinal-wise force to draw off the bristle-carrying, twisted wire brush.
  • Both conveyor chains 8 are installed in rotating drum 10 which provides the twisting of wires A and C entering through stationary guide jaws 5, twisting being accomplished upon rotation of drum 10.
  • Drum 10 rotation is variably controlled and provided by gear drive 11 through transmission gear 12.
  • the two conveyor belts or chains 8 can be driven at variable speeds relative to drum 10 through second speed transmission 13, which is coupled to drive 11, and through transmission gear 14, ring gear 14d, follower gears 14a, and 14b, pinion gears 14c, and worm gears 15.
  • the speed ratio between rotating drum l0 and conveyor 8 is adjustable, decreasing the tension in wires A and C by turning variable gear 14a in the same direction of rotation as drum 10, or increasing the tension applied by opposing rotation and hence also causing the increase and decrease in pitch P (shown in FIG. 5d) of the twisting turns respectively.
  • FIG. 3 illustrates another embodiment for performing the manufacturing processes described above.
  • a similar rotating drum 10 with similar drive means through transmission gears 12 and 14 there are rotatably mounted on bearing blocks 17, which are fixedly attached to the inside wall of the drum, two pair of small, peripherally interfacing rollers or disks I6 having a peripheral groove 19, shown in FIG. 4.
  • These rollers or disks 16 provide the same twisting of the two wires and tension to draw off the twisted and finished brush as that described for gripper blades 9.
  • the peripheral grooves are shaped in such a way that groove I9 corresponds to the cross section of wires A and C in juxtaposition to one another, and containing bristles B therebetween. In this manner the wires are thus clamped securely in groove 19 and the twisting is accomplished between the first disk and wire guide jaws 5, after introducing bristles B, by rotation of disks to, similar to that described for gripper blades 9.
  • forming device 20 For manufacturing Christmas tree branches of polyvinyl chloride bristles, forming device 20 (FIG. 3) is provided at the entrance to rotating drum 10, which shapes the cylindrical bristle-brush (shown in FIG. 5) following a slight prior heating to the bristle-brush to obtain various branch cross sections, some of which are illustrated in FIG. 5a, 5b and 5c. Forming device 20 is interchangeable so that each one of the aforementioned cross-sectional shapes of Christmas tree branches can be made. Following the twisting, stretching and drawoff device, similar to that as illustrated in FIG. 1, there is provided a length-cutting device of known design which can be appropriately controlled to cut the bristle-brush in desired lengths.
  • a bristle hopper for holding and supplying bristles
  • feeder means-receiving bristles from the hopper and depositing them between said wires so that bristles are carried by the wires during said travel of the wires away from the guide jaws,
  • a rotatably mounted hollow cylinder coaxial with the path of said travel of the wires, for receiving the wires carrying the bristles away from said guide jaws, and outfitted with brush-forming means for drawing the wires away from the guide jaws and effecting twisting of the wires upon rotation of the cylinder to secure the bristles between the wires,
  • opposed cooperating endless conveyor belts mounted in the cylinder for rotation therewith, means for driving the conveyor belts for said cooperation thereof, said conveyor belts carrying gripper blades at spaced intervals positioned for cooperation of the gripper blades of the two belts to engage the wires at spaced intervals for the twisting thereof in response to rotation of the cylinder, and drawing the wires away from the guide jaws.
  • the gripper blades working in pairs composed of a blade attached to each conveyor belt, the blades having pointed working ends facilitating passing of the blades through the bristles and making engagement of the blades with the wires.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)
  • Wire Processing (AREA)
US802826*A 1968-03-02 1969-02-27 Apparatus for continuous manufacture of cylindrical brushes Expired - Lifetime US3596998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681632368 DE1632368A1 (de) 1968-03-02 1968-03-02 Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Rundbuersten

Publications (1)

Publication Number Publication Date
US3596998A true US3596998A (en) 1971-08-03

Family

ID=5683479

Family Applications (1)

Application Number Title Priority Date Filing Date
US802826*A Expired - Lifetime US3596998A (en) 1968-03-02 1969-02-27 Apparatus for continuous manufacture of cylindrical brushes

Country Status (4)

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US (1) US3596998A (enrdf_load_stackoverflow)
BE (1) BE729173A (enrdf_load_stackoverflow)
FR (1) FR2003095A1 (enrdf_load_stackoverflow)
GB (1) GB1228304A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791421A (en) * 1972-08-07 1974-02-12 Gordon Ind Inc Apparatus for making artificial branches, brushes, and the like
US4573247A (en) * 1984-03-16 1986-03-04 Mr. Christmas Incorporated Artificial tree limb maker machine
BE1014313A3 (fr) * 2000-08-03 2003-08-05 Zahoransky Anton Gmbh & Co Dispositif pour la fabrication de brosses torses.
CN115606933A (zh) * 2022-08-25 2023-01-17 嘉兴捷翔洁具制品有限公司 一种基于注塑废料再生技术的清洗刷制造设备及工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2189646A (en) * 1937-12-28 1940-02-06 Betzler Paul Method and apparatus for twisting metal bars into a unitary structure
US3225798A (en) * 1963-11-26 1965-12-28 Dessureau Joseph Theodore Means for processing stone sawing wires
US3322467A (en) * 1965-03-15 1967-05-30 American Tech Mach Co Brush making apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2189646A (en) * 1937-12-28 1940-02-06 Betzler Paul Method and apparatus for twisting metal bars into a unitary structure
US3225798A (en) * 1963-11-26 1965-12-28 Dessureau Joseph Theodore Means for processing stone sawing wires
US3322467A (en) * 1965-03-15 1967-05-30 American Tech Mach Co Brush making apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791421A (en) * 1972-08-07 1974-02-12 Gordon Ind Inc Apparatus for making artificial branches, brushes, and the like
US4573247A (en) * 1984-03-16 1986-03-04 Mr. Christmas Incorporated Artificial tree limb maker machine
BE1014313A3 (fr) * 2000-08-03 2003-08-05 Zahoransky Anton Gmbh & Co Dispositif pour la fabrication de brosses torses.
CN115606933A (zh) * 2022-08-25 2023-01-17 嘉兴捷翔洁具制品有限公司 一种基于注塑废料再生技术的清洗刷制造设备及工艺

Also Published As

Publication number Publication date
GB1228304A (enrdf_load_stackoverflow) 1971-04-15
FR2003095A1 (enrdf_load_stackoverflow) 1969-11-07
BE729173A (enrdf_load_stackoverflow) 1969-08-01

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