EP2335522B1 - Tufting tool for an apparatus for producing brushes or brooms - Google Patents

Tufting tool for an apparatus for producing brushes or brooms Download PDF

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Publication number
EP2335522B1
EP2335522B1 EP09179803A EP09179803A EP2335522B1 EP 2335522 B1 EP2335522 B1 EP 2335522B1 EP 09179803 A EP09179803 A EP 09179803A EP 09179803 A EP09179803 A EP 09179803A EP 2335522 B1 EP2335522 B1 EP 2335522B1
Authority
EP
European Patent Office
Prior art keywords
punch
bristles
channel
group
fixed
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
EP09179803A
Other languages
German (de)
French (fr)
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EP2335522A1 (en
Inventor
Vittorio Pini
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.)
Borghi SpA
Original Assignee
Borghi SpA
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 Borghi SpA filed Critical Borghi SpA
Priority to EP09179803A priority Critical patent/EP2335522B1/en
Priority to AT09179803T priority patent/ATE547025T1/en
Publication of EP2335522A1 publication Critical patent/EP2335522A1/en
Application granted granted Critical
Publication of EP2335522B1 publication Critical patent/EP2335522B1/en
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Anticipated expiration legal-status Critical

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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
    • 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
    • A46D3/042—Machines for inserting or fixing bristles in bodies for fixing bristles using an anchor or staple

Definitions

  • the present invention relates to a punch for an apparatus for producing brushes or brooms, in particular a punch intended for inserting groups of bristles into a bristle-holding body of a brush or broom.
  • punches are known for apparatuses for producing brushes or brooms, comprising a punch body fixed to a slide that is slidable inside a guiding body along a work direction, that, depending on the type of apparatus, can be substantially vertical or substantially horizontal.
  • the punch is provided with a central channel into which is inserted and folded in a substantially "U" shape a group of bristles to be inserted into a suitable seat in a bristle-holding body of a brush or broom.
  • the group of bristles is inserted by transversely resting the group of bristles in a resting zone at an inlet end of the central channel of the punch such that a central zone of the group of bristles is positioned at said inlet end.
  • the group of bristles is pushed into the central channel of the punch by a pushing element that acts on said central zone of the group of bristles, causing the folding thereof in a U shape and the insertion thereof into said central channel.
  • the punch through the slide, is slided in the work direction until the outlet end of the central channel of the punch, opposite the inlet end, is brought into contact with the bristle-holding body.
  • the pusher pushes the group of bristles folded in a "U" shape against the bristle-holding body until the group of bristles is inserted into a seat made in the bristle-holding body.
  • the punch is removed from the bristle-holding body, such that the group of bristles is detached from the punch and remains planted in the bristle-holding body.
  • inserts made of hard metal extends the life of the punch they do not increase the life of the punch in a satisfactory manner and, in all cases, when the inserts have been worn by the bristles coated in abrasive material, they need to be replaced. Replacing the inserts, which is also known as punch regeneration, is a costly operation.
  • the present invention aims to provide a punch for an apparatus for manufacturing brushes or brooms that has a life that is noticeably greater than that of known punches and entails small regeneration costs.
  • a punch for an apparatus for manufacturing brushes or brooms comprising a punch body fixed to a slide element movably guided inside a guiding body, said punch comprising a central channel suitable for receiving a group of bristles intended for being fixed to a bristle-holding body, a resting zone intended for receiving said group of bristles before it is inserted into said central channel, said resting zone being situated at an inlet end of said central channel, characterised in that said resting zone comprises at least a first revolving element and a second revolving element that are situated in positions that are substantially diametrically opposite said inlet end.
  • FIGS 1 and 2 there is shown a punch P according to the prior art that comprises a punch body 1 fixed to a slide element 2 that is slidable inside a guiding body 3 in a work direction Z.
  • a channel 4 is obtained that has an axis coinciding with said direction Z.
  • the channel 4 is provided with an inlet opening 5, through which a group of bristles S to be fixed on a brush body (not shown) can be fixed, and with an outlet opening 6 through which a group of bristles S inserted into the channel 4 is pushed out of the channel 4 to be fixed onto said brush body.
  • a resting zone 7 is provided on which a group of bristles S can be rested before being introduced into the channel 4.
  • the group of bristles S is introduced into the channel 4 by a pushing element 8 that is slidable in said direction Z that, by acting on a central zone of the group of bristles S, pushes the group of bristles S into the channel 4, progressively folding the group of bristles S into a U-shaped configuration.
  • the pushing element 8 further inserts the group of bristles S into the brush body.
  • a continuous line shows a group of bristles S resting on the resting surface 7 of the punch body 2, before the group of bristles S is inserted into the channel 4, whilst a dashed line shows the same group of bristles S in an initial step of insertion into the channel 4 and at the end of the insertion into the channel 4.
  • the group of bristles S slides on the resting surface 7 and on the edge of the inlet opening 5 of the channel 4. This causes wear to the resting surface 7 and to the edge of the inlet opening 5, which wear is particularly rapid when bristles are used that are coated in abrasive material, thus drastically reducing the life of the punch P.
  • a first revolving element 9 and a second revolving element 10 are provided that are arranged at the inlet opening of the channel 4, in positions diametrically opposite said opening 5.
  • the first revolving element 9 comprises a first roller 9' mounted in a freely rotatable manner on a first pivot 11 inserted into the body 1 of the punch P' in a direction substantially perpendicular to said axis Z.
  • the second revolving element 10 comprises a second roller 10' mounted in a freely rotatable manner on a second pivot 12 inserted into the body 1 of the punch P' in a direction substantially perpendicular to said axis Z.
  • the first revolving element 9 and the second revolving element 10 constitute the resting zone on which the group of bristles S is rested before being introduced into the channel 4.
  • the first roller 9' and the second roller 10' are made of a material that is highly resistant to wear, for example hardened steel.
  • a group S of bristles is rested on the rollers 9', 10' to be subsequently pushed inside the channel 4 by the pushing element 8.
  • the group of bristles S slides on the rollers 9', 10' rotating the rollers 9', 10' around the respective pivots 11, 12.
  • there is only rolling friction the value of which, as is known, is significantly less than the friction value of sliding, as occurs in a punch P according to the prior art between the group of bristles S, the resting surface 7 and the edges of the inlet opening 5 of the channel 4.
  • rollers 9', 10' are subject to much slower wear than wear to the resting surface 7 and the edges of the inlet opening 5 that occurs in a punch P according to the prior art. This causes a significant increase in the length of the life of the punch body 1.
  • the regeneration operation can be conducted rapidly and at very low cost inasmuch as it is sufficient to replace the rollers 9', 10', which occurs simply by detaching the pivots 11, 12 from the punch body 1, replacing the rollers 9', 10' and reintroducing the pivots 11, 12 into the body 1 of the punch P'.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

A punch (P') for an apparatus for manufacturing brushes or brooms comprises a punch body (1) fixed to a slide element (2) movably guided inside a guide body (3) in a sliding direction (Z), said punch body (1) comprising a channel (4) suitable for receiving a group of bristles (S) intended for being fixed to a bristle-holding body and a resting zone (7) intended for receiving said group of bristles (S) before it is inserted into said channel (4), said resting zone (7) being situated at an inlet end (5) of said channel (4), characterised in that said resting zone (7) comprises at least a first revolving element (9) and a second revolving element (10) that are situated in positions that are substantially diametrically opposite said inlet end (5).

Description

  • The present invention relates to a punch for an apparatus for producing brushes or brooms, in particular a punch intended for inserting groups of bristles into a bristle-holding body of a brush or broom.
  • In the prior art (see e.g. DE-A-196 00 193 ) punches are known for apparatuses for producing brushes or brooms, comprising a punch body fixed to a slide that is slidable inside a guiding body along a work direction, that, depending on the type of apparatus, can be substantially vertical or substantially horizontal. The punch is provided with a central channel into which is inserted and folded in a substantially "U" shape a group of bristles to be inserted into a suitable seat in a bristle-holding body of a brush or broom.
  • The group of bristles is inserted by transversely resting the group of bristles in a resting zone at an inlet end of the central channel of the punch such that a central zone of the group of bristles is positioned at said inlet end.
  • The group of bristles is pushed into the central channel of the punch by a pushing element that acts on said central zone of the group of bristles, causing the folding thereof in a U shape and the insertion thereof into said central channel.
  • Subsequently, the punch, through the slide, is slided in the work direction until the outlet end of the central channel of the punch, opposite the inlet end, is brought into contact with the bristle-holding body. When said outlet end comes into contact with the bristle-holding body, the pusher pushes the group of bristles folded in a "U" shape against the bristle-holding body until the group of bristles is inserted into a seat made in the bristle-holding body. Lastly, the punch is removed from the bristle-holding body, such that the group of bristles is detached from the punch and remains planted in the bristle-holding body.
  • When the groups of bristles are pushed inside the central channel of the punch, they rub with great friction against the surface of the resting zone and against the edges of the inlet opening of the central channel of the punch, causing progressive damage thereto. This damage is particularly rapid when groups of bristles are used that are coated with abrasive material, for example to make abrasive brushes.
  • This makes the live of the punch very short, which has to be replaced frequently, which causes the arrest of the apparatus for the time required to replace the damaged punch or punches, with consequent loss of productivity and high running costs.
  • An attempt has been made to overcome the aforesaid drawback by making the aforesaid surface and the edges of the inlet opening of the central channel of the punch with inserts in hard metal, for example sintered inserts that noticeably increase the cost of the punch.
  • Although the use of inserts made of hard metal extends the life of the punch they do not increase the life of the punch in a satisfactory manner and, in all cases, when the inserts have been worn by the bristles coated in abrasive material, they need to be replaced. Replacing the inserts, which is also known as punch regeneration, is a costly operation.
  • The present invention aims to provide a punch for an apparatus for manufacturing brushes or brooms that has a life that is noticeably greater than that of known punches and entails small regeneration costs.
  • According to the present invention a punch is provided for an apparatus for manufacturing brushes or brooms comprising a punch body fixed to a slide element movably guided inside a guiding body, said punch comprising a central channel suitable for receiving a group of bristles intended for being fixed to a bristle-holding body, a resting zone intended for receiving said group of bristles before it is inserted into said central channel, said resting zone being situated at an inlet end of said central channel, characterised in that said resting zone comprises at least a first revolving element and a second revolving element that are situated in positions that are substantially diametrically opposite said inlet end.
  • Owing to the invention, wear to the punch is drastically reduced in said resting zone.
  • In fact, when a group of bristles is rested in said resting zone and is introduced into the central channel of the punch, it slides above the revolving bodies that start to rotate, minimising friction with the group of bristles. This means that the wear of the revolving bodies due to the contact thereof with the groups of bristles is also minimised, with a consequent noticeable increase in the life of the punch.
  • Further, when the revolving bodies are worn, the replacement thereof it simple and not costly.
  • The invention will be disclosed below merely by way of non limiting example with reference to the attached drawings, in which:
    • Figure 1 is a side view of a punch according to the prior art;
    • Figure 2 is a partially sectioned view of the punch of Figure 1;
    • Figure 3 is a view like that of Figure 1, relating to a punch according to the invention;
    • Figure 4 is a partially sectioned view of the punch of Figure 3.
  • In Figures 1 and 2 there is shown a punch P according to the prior art that comprises a punch body 1 fixed to a slide element 2 that is slidable inside a guiding body 3 in a work direction Z.
  • In the punch body 2 a channel 4 is obtained that has an axis coinciding with said direction Z. The channel 4 is provided with an inlet opening 5, through which a group of bristles S to be fixed on a brush body (not shown) can be fixed, and with an outlet opening 6 through which a group of bristles S inserted into the channel 4 is pushed out of the channel 4 to be fixed onto said brush body.
  • At the inlet opening 5 a resting zone 7 is provided on which a group of bristles S can be rested before being introduced into the channel 4.
  • The group of bristles S is introduced into the channel 4 by a pushing element 8 that is slidable in said direction Z that, by acting on a central zone of the group of bristles S, pushes the group of bristles S into the channel 4, progressively folding the group of bristles S into a U-shaped configuration. The pushing element 8 further inserts the group of bristles S into the brush body.
  • In Figure 2 a continuous line shows a group of bristles S resting on the resting surface 7 of the punch body 2, before the group of bristles S is inserted into the channel 4, whilst a dashed line shows the same group of bristles S in an initial step of insertion into the channel 4 and at the end of the insertion into the channel 4.
  • During insertion into the channel 4, the group of bristles S slides on the resting surface 7 and on the edge of the inlet opening 5 of the channel 4. This causes wear to the resting surface 7 and to the edge of the inlet opening 5, which wear is particularly rapid when bristles are used that are coated in abrasive material, thus drastically reducing the life of the punch P.
  • This problem of rapid wear is resolved in a punch P' according to the invention, shown in Figures 3 and 4. The punch elements P' corresponding to the punch elements P according to the prior art are indicated by the same reference numbers.
  • In a punch P' according to the invention a first revolving element 9 and a second revolving element 10 are provided that are arranged at the inlet opening of the channel 4, in positions diametrically opposite said opening 5. The first revolving element 9 comprises a first roller 9' mounted in a freely rotatable manner on a first pivot 11 inserted into the body 1 of the punch P' in a direction substantially perpendicular to said axis Z. The second revolving element 10 comprises a second roller 10' mounted in a freely rotatable manner on a second pivot 12 inserted into the body 1 of the punch P' in a direction substantially perpendicular to said axis Z.
  • The first revolving element 9 and the second revolving element 10 constitute the resting zone on which the group of bristles S is rested before being introduced into the channel 4.
  • The first roller 9' and the second roller 10' are made of a material that is highly resistant to wear, for example hardened steel.
  • In order to be inserted into the channel 4 of the punch body 1, a group S of bristles is rested on the rollers 9', 10' to be subsequently pushed inside the channel 4 by the pushing element 8. During this operation, the group of bristles S slides on the rollers 9', 10' rotating the rollers 9', 10' around the respective pivots 11, 12. In this manner between the group of bristles S and the rollers 9', 10' there is only rolling friction, the value of which, as is known, is significantly less than the friction value of sliding, as occurs in a punch P according to the prior art between the group of bristles S, the resting surface 7 and the edges of the inlet opening 5 of the channel 4.
  • Consequently, the rollers 9', 10' are subject to much slower wear than wear to the resting surface 7 and the edges of the inlet opening 5 that occurs in a punch P according to the prior art. This causes a significant increase in the length of the life of the punch body 1.
  • Further, when the degree of wear to the rollers 9', 10' makes it necessary to regenerate the punch P', the regeneration operation can be conducted rapidly and at very low cost inasmuch as it is sufficient to replace the rollers 9', 10', which occurs simply by detaching the pivots 11, 12 from the punch body 1, replacing the rollers 9', 10' and reintroducing the pivots 11, 12 into the body 1 of the punch P'.

Claims (6)

  1. Punch (P') for an apparatus for manufacturing brushes or brooms, comprising a punch body (1) fixed to a slide element (2) guided movably inside a guiding body (3) in a sliding direction (Z), said punch body (1) comprising a channel (4) that is suitable for receiving a group of bristles (S) that is suitable for being fixed to a bristle-holding body and a resting zone (7) intended for receiving said group of bristles (S) before it is inserted into said channel (4), said resting zone (7) being located at an inlet end (5) of said channel (4), characterised in that said resting zone (7) comprises at least a first revolving element (9) and a second revolving element (10) located substantially diametrically opposite, at said inlet end (5).
  2. Punch (P') according to claim 1, wherein said first revolving element (9) comprises a first roller element (9') mounted in a freely rotatable manner on a first pivot (11), fixed to said punch body (1).
  3. Punch (P') according to claim 2, wherein said first pivot (11) is fixed to said punch body (1) in a direction substantially perpendicular to said sliding direction (Z) of said slide element (2).
  4. Punch (P') according to any preceding claim, wherein said second revolving element (10) comprises a second roller element (10') mounted in a freely rotatable manner on a second pivot (12) fixed to said punch body (1).
  5. Punch (P') according to claim 4, wherein said second pivot (12) is fixed to said punch body (1) in a direction substantially perpendicular to said sliding direction (Z) of said slide element (2).
  6. Punch (P') according to any one of claims 2 to 5, wherein said first roller element (9') and said second roller element (10') are made of a material having great resistance to wear.
EP09179803A 2009-12-18 2009-12-18 Tufting tool for an apparatus for producing brushes or brooms Active EP2335522B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09179803A EP2335522B1 (en) 2009-12-18 2009-12-18 Tufting tool for an apparatus for producing brushes or brooms
AT09179803T ATE547025T1 (en) 2009-12-18 2009-12-18 TAGGING TOOL FOR A DEVICE FOR PRODUCING BRUSHES OR BROOMS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09179803A EP2335522B1 (en) 2009-12-18 2009-12-18 Tufting tool for an apparatus for producing brushes or brooms

Publications (2)

Publication Number Publication Date
EP2335522A1 EP2335522A1 (en) 2011-06-22
EP2335522B1 true EP2335522B1 (en) 2012-02-29

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ID=42084685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09179803A Active EP2335522B1 (en) 2009-12-18 2009-12-18 Tufting tool for an apparatus for producing brushes or brooms

Country Status (2)

Country Link
EP (1) EP2335522B1 (en)
AT (1) ATE547025T1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN2012DN05235A (en) 2010-01-08 2015-10-23 Nippon Telegraph & Telephone

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2017845A (en) * 1933-05-10 1935-10-22 Autograf Tooth Brush Co Inc Method of bristling a brush support
DE19600193A1 (en) * 1996-01-04 1997-07-10 Richard Dr Zahoransky Inserting bristles into perforated brush body with angled surface
JP5227580B2 (en) * 2007-12-21 2013-07-03 ライオン株式会社 Flocking device

Also Published As

Publication number Publication date
EP2335522A1 (en) 2011-06-22
ATE547025T1 (en) 2012-03-15

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