CA1312363C - Optical position indicator for fastener attaching machine - Google Patents
Optical position indicator for fastener attaching machineInfo
- Publication number
- CA1312363C CA1312363C CA000539922A CA539922A CA1312363C CA 1312363 C CA1312363 C CA 1312363C CA 000539922 A CA000539922 A CA 000539922A CA 539922 A CA539922 A CA 539922A CA 1312363 C CA1312363 C CA 1312363C
- Authority
- CA
- Canada
- Prior art keywords
- light source
- holder
- light
- position indicator
- optical position
- 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 - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
- A41H37/00—Machines, appliances or methods for setting fastener-elements on garments
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Projection Apparatus (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An optical position indicator, disposed between punch and die units of a fastener attaching machine and horizontally reciprocable in timed relation to vertical movement of the punch unit, includes a light source, and a holder supporting thereon the light source in such a posture that a light beam from the light source is projected directly on the garment fabric without any reflection.
An optical position indicator, disposed between punch and die units of a fastener attaching machine and horizontally reciprocable in timed relation to vertical movement of the punch unit, includes a light source, and a holder supporting thereon the light source in such a posture that a light beam from the light source is projected directly on the garment fabric without any reflection.
Description
3 ~ 3 BACKGRO~ND OF THE INVENTION
1. Field of the Invention:
The present invention relates generally to an apparatus for attaching a garment fastener, such as a snap fastener, a button or an ornament, to a garment, and more particularly to such a fastener attaching machine having a device for indicating a correct loca-tion in which the garment fastener is to be attached, the correct location being in vertical alignment with a punch and a die of the fastener attaching machine.
1. Field of the Invention:
The present invention relates generally to an apparatus for attaching a garment fastener, such as a snap fastener, a button or an ornament, to a garment, and more particularly to such a fastener attaching machine having a device for indicating a correct loca-tion in which the garment fastener is to be attached, the correct location being in vertical alignment with a punch and a die of the fastener attaching machine.
2. Description of the Prior Art:
A variety of fastener attaching machines are known in which a pair of fastener elements is supported on a lower or die unit and an upper or punch die, respectively; a punch of the upper unit moves toward a die of the lower unit to join the two fastener elements together in clenched condition with a garment fabric sandwiched between the two elements. At that time the garment fabric is correctly positioned between the upper and lower units with the aid of an indicator for designating a correct location on the garment fabric where the fastener is to be attached.
U. S. Pat. No. 4,605,150, issued Aug. 12, 1986, discloses two different optical indicators for the concerned purpose. One of the indicators comprises a :
; horizontal tubular housing having a downwardly opening aperture, a light source disposed at one end of the housing, and a reflector disposed at the other end of the `~
~3~3~3 housing for directing a light beam from the light source downwardly through the aperture to project a light spot on the garment fabric. The other indicator comprises a light generating unit, a light reflecting unit, and an optical fiber cable interconnecting the two units. The light reflecting unit includes a horizontal tubular housing having at one end a reElector. The optical fiber cable extends from the ligh-t generating unit into the light reflecting unit through the other end thereof for directing a light beam from a light source oE the light generating unit to the reflec-tor.
However, because of the reflector, such prior art oplical projectors are complex in construction and hence expensive to manufacture. Another problem with these known projectors is that foreign matter such as dust tends to enter the tubular housing to interrupt the light beam in part, thus causing a fuzzy spot light on the fabric.
SUMMARY OF T~E IN~E~TION
It is therefore an object of the present invention to provide an optical position indicator for fastener attaching machines which is simple in construction and hence lnexpensive to manufacture and which can project a distinct and bright light spot on the garment fabric, thus guaran-teeing accurate positioning of the garment fabric between the coacting die and punch of the fastener attachlng machine.
According to the present invention, an optical ~3~23~3 position indicator, disposed between punch and die units of a fastener attaching machine and horizontally reciprocable, includes a holder which supports thereon a light source in such a posture that a light beam from the light source is directed downwardly to the garment fabric along a common centerline of the punch and die units directly without any reflection.
Many other objects, advantages and additional features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying drawings in which a preferred structural embodiment incorporating the principle of the present invention is shown by way of illustrative example.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a fragmentary side elevational view, partially in cross section, of an optical position indicator embodying the present invention;
FIG. 2 is an enlarged plan view, partially in cross section, of the indicator of FIG. l; and FIG. 3 is a cross-sectional view taken along line III of FIG. 2.
. DETAILED DESCRIPTION
FIG. 1 shows an optical position indicator 5 for designating or indicating on a garment fabric C a correct location CP in which a pair of first and second fastener elements Pl, P2, such as a button and a tack, is to be attached to the garment ~abric C by upper and lower units 1, 3 of a fastener attaching machine. As is well known in the art, in attaching the fastener to the garment, the first and second fastener elements Pl, P2 are supplied to a punch 2 of the upper unit 1 and a die 4 of the lower unit 3, respectively, and then -the punch 2 is moved toward the die 4 to join the first and second fastener elements Pl, P2 together in clenched condition with the garment fabric C
sandwiched between the two elements.
The indicator 5 is operatively connected to a suitable drive (not shown) for horizontal reciprocating movements in the directions indicated by a two-headed arrow. Thus the indicator 5 is moved rearwardly (rightwardly) from an advanced position (FIG. 1) during the downward stroke of the upper unit 1, and is moved forwardly (leftwardly) to the advanced position during the upward stroke of the upper unit 1.
The indicator 5 generally comprises an elongated tubular support 9, a light source 6, and a holder 7 supporting the light source 6 in a manner described below and connected to one end of the support 9. ~s it is preferred to produce a condensed ray of light, the light source 6 is a light-emitting diode in the embodimen-t but may be any other form that produces a condensed ray of light.
The holder 7 supports thereon the light source 6 in such a posture that the light beam from the light source 6 ~ 3~23~
is directed downwardly to the garment fabric C along a common centerline (L) of the punch 2 and the die 4 directly without any reflection. The holder 7 has at the underside of the light source 6 a slit 8 for the passage therethrough of the light beam from the light source 6. The slit 8 servec to assist in preventing the light beam from being spread and may have a circular, cross-shaped or any other cross-sectional shape.
The holder 7 also has in one end remote from the light source 6 a bore 10 in which one end of the support 9 is inserted. The support 9 is prevented, by means of a generally U-shaped stop spring 13, from being accidentally removed from the holder 7. The stop spring 13, as better shown in FIGS. 2 and 3, is received in a generally U-shaped peripheral groove ]2 of the holder 7 and has a pair of inwardly bent end portions 14, 14 received in a pair of diametrically opposed peripheral slots 11, 11, respectively. Thus support is prevented also from rotating on the holder 7 and can be attached to the latter in a single simple snap action. Alternatively, an adhesive may be used to attach the support 9 to the holder 7.
~ As shown in FIG. 1, a pair of terminals 16, 16 of the ; light source 6 is connected to a pair of lead wires 15, 15 extending through the tubular support 9. In production, after the terminals 16, 16 of the light source 6 are connected to the lead wires 15, 15 by soldering, an ( trc~cl e ~ c f I~) insulating resin 18 such as Araldite ~ e*~ is poured ~ 123~3 :
in a recess 17 in the holder 7 not only to prevent any contact between the terminals 16, 16 and between the lead wires 15, 15 but also to keep the light source 6 in place.
In operation, as the upper unit 1 is in raised position, the indicator 5 is moved forwardly until the light source 6 is aligned with the common centerline L of the punch 2 and the die 4, as shown in FIG. 1. Since the light source 6 faces downwardly, a light beam generated by the light source 6 is directed through the slit 8 to the garment fabric C along the common centerline L of the punch 2 and the die 4 directly without any reflection. Then, the garment fabric C is shifted to bring the correct point CP
(on the fabric C) in register with the light spot projected on the fabric C. Finally, the indicator 5 is retracted from the path of movement of the upper unit 1, whereupon the upper unit 1 is lowered to attach the fastener to the garment fabric C at the correct point PC.
With the optical position indicator 5, since the light source is sopported on the holder in such a posture that a light beam from the light sauce is directed to the garment fabric directl~ without any reflection, the light beam is free from being interrupted by any foreign matter such as dust, thus projecting a distinct and bright light spot on the garment fabric.
Although various minor modifications may be suggested by those versed in the art, it should be understood that we with to embody within the scope of the patent granted ~1 3~23$3 hereon, all such embodiments as reasonably and properly come within the scope of our contribution to the art.
;~ :
~ ' .
: - 7 -
A variety of fastener attaching machines are known in which a pair of fastener elements is supported on a lower or die unit and an upper or punch die, respectively; a punch of the upper unit moves toward a die of the lower unit to join the two fastener elements together in clenched condition with a garment fabric sandwiched between the two elements. At that time the garment fabric is correctly positioned between the upper and lower units with the aid of an indicator for designating a correct location on the garment fabric where the fastener is to be attached.
U. S. Pat. No. 4,605,150, issued Aug. 12, 1986, discloses two different optical indicators for the concerned purpose. One of the indicators comprises a :
; horizontal tubular housing having a downwardly opening aperture, a light source disposed at one end of the housing, and a reflector disposed at the other end of the `~
~3~3~3 housing for directing a light beam from the light source downwardly through the aperture to project a light spot on the garment fabric. The other indicator comprises a light generating unit, a light reflecting unit, and an optical fiber cable interconnecting the two units. The light reflecting unit includes a horizontal tubular housing having at one end a reElector. The optical fiber cable extends from the ligh-t generating unit into the light reflecting unit through the other end thereof for directing a light beam from a light source oE the light generating unit to the reflec-tor.
However, because of the reflector, such prior art oplical projectors are complex in construction and hence expensive to manufacture. Another problem with these known projectors is that foreign matter such as dust tends to enter the tubular housing to interrupt the light beam in part, thus causing a fuzzy spot light on the fabric.
SUMMARY OF T~E IN~E~TION
It is therefore an object of the present invention to provide an optical position indicator for fastener attaching machines which is simple in construction and hence lnexpensive to manufacture and which can project a distinct and bright light spot on the garment fabric, thus guaran-teeing accurate positioning of the garment fabric between the coacting die and punch of the fastener attachlng machine.
According to the present invention, an optical ~3~23~3 position indicator, disposed between punch and die units of a fastener attaching machine and horizontally reciprocable, includes a holder which supports thereon a light source in such a posture that a light beam from the light source is directed downwardly to the garment fabric along a common centerline of the punch and die units directly without any reflection.
Many other objects, advantages and additional features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying drawings in which a preferred structural embodiment incorporating the principle of the present invention is shown by way of illustrative example.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a fragmentary side elevational view, partially in cross section, of an optical position indicator embodying the present invention;
FIG. 2 is an enlarged plan view, partially in cross section, of the indicator of FIG. l; and FIG. 3 is a cross-sectional view taken along line III of FIG. 2.
. DETAILED DESCRIPTION
FIG. 1 shows an optical position indicator 5 for designating or indicating on a garment fabric C a correct location CP in which a pair of first and second fastener elements Pl, P2, such as a button and a tack, is to be attached to the garment ~abric C by upper and lower units 1, 3 of a fastener attaching machine. As is well known in the art, in attaching the fastener to the garment, the first and second fastener elements Pl, P2 are supplied to a punch 2 of the upper unit 1 and a die 4 of the lower unit 3, respectively, and then -the punch 2 is moved toward the die 4 to join the first and second fastener elements Pl, P2 together in clenched condition with the garment fabric C
sandwiched between the two elements.
The indicator 5 is operatively connected to a suitable drive (not shown) for horizontal reciprocating movements in the directions indicated by a two-headed arrow. Thus the indicator 5 is moved rearwardly (rightwardly) from an advanced position (FIG. 1) during the downward stroke of the upper unit 1, and is moved forwardly (leftwardly) to the advanced position during the upward stroke of the upper unit 1.
The indicator 5 generally comprises an elongated tubular support 9, a light source 6, and a holder 7 supporting the light source 6 in a manner described below and connected to one end of the support 9. ~s it is preferred to produce a condensed ray of light, the light source 6 is a light-emitting diode in the embodimen-t but may be any other form that produces a condensed ray of light.
The holder 7 supports thereon the light source 6 in such a posture that the light beam from the light source 6 ~ 3~23~
is directed downwardly to the garment fabric C along a common centerline (L) of the punch 2 and the die 4 directly without any reflection. The holder 7 has at the underside of the light source 6 a slit 8 for the passage therethrough of the light beam from the light source 6. The slit 8 servec to assist in preventing the light beam from being spread and may have a circular, cross-shaped or any other cross-sectional shape.
The holder 7 also has in one end remote from the light source 6 a bore 10 in which one end of the support 9 is inserted. The support 9 is prevented, by means of a generally U-shaped stop spring 13, from being accidentally removed from the holder 7. The stop spring 13, as better shown in FIGS. 2 and 3, is received in a generally U-shaped peripheral groove ]2 of the holder 7 and has a pair of inwardly bent end portions 14, 14 received in a pair of diametrically opposed peripheral slots 11, 11, respectively. Thus support is prevented also from rotating on the holder 7 and can be attached to the latter in a single simple snap action. Alternatively, an adhesive may be used to attach the support 9 to the holder 7.
~ As shown in FIG. 1, a pair of terminals 16, 16 of the ; light source 6 is connected to a pair of lead wires 15, 15 extending through the tubular support 9. In production, after the terminals 16, 16 of the light source 6 are connected to the lead wires 15, 15 by soldering, an ( trc~cl e ~ c f I~) insulating resin 18 such as Araldite ~ e*~ is poured ~ 123~3 :
in a recess 17 in the holder 7 not only to prevent any contact between the terminals 16, 16 and between the lead wires 15, 15 but also to keep the light source 6 in place.
In operation, as the upper unit 1 is in raised position, the indicator 5 is moved forwardly until the light source 6 is aligned with the common centerline L of the punch 2 and the die 4, as shown in FIG. 1. Since the light source 6 faces downwardly, a light beam generated by the light source 6 is directed through the slit 8 to the garment fabric C along the common centerline L of the punch 2 and the die 4 directly without any reflection. Then, the garment fabric C is shifted to bring the correct point CP
(on the fabric C) in register with the light spot projected on the fabric C. Finally, the indicator 5 is retracted from the path of movement of the upper unit 1, whereupon the upper unit 1 is lowered to attach the fastener to the garment fabric C at the correct point PC.
With the optical position indicator 5, since the light source is sopported on the holder in such a posture that a light beam from the light sauce is directed to the garment fabric directl~ without any reflection, the light beam is free from being interrupted by any foreign matter such as dust, thus projecting a distinct and bright light spot on the garment fabric.
Although various minor modifications may be suggested by those versed in the art, it should be understood that we with to embody within the scope of the patent granted ~1 3~23$3 hereon, all such embodiments as reasonably and properly come within the scope of our contribution to the art.
;~ :
~ ' .
: - 7 -
Claims (3)
1. An optical position indicator for indicating on a garment fabric a correct location in which a fastener is to be attached to the garment fabric by upper and lower units of a fastener attaching machine, said indicator being horizontally movable into and away from a space between the upper and lower units in timed relation to vertical movements of the upper unit toward and away from the lower unit, said indictor comprises:
(a) a light source for generating a light beam; and (b) a holder supporting thereon said light source in such a posture that the light beam from said light source is projected directly on the garment fabric along a common centerline of the upper and lower units, said holder having at an underside of said light source a slit for passage therethrough of the light beam, said slot being a downwardly directed opening of a light source receiving chamber of the holder, said chamber being so shaped and dimensioned that said light source fills generally the entire space of said chamber.
(a) a light source for generating a light beam; and (b) a holder supporting thereon said light source in such a posture that the light beam from said light source is projected directly on the garment fabric along a common centerline of the upper and lower units, said holder having at an underside of said light source a slit for passage therethrough of the light beam, said slot being a downwardly directed opening of a light source receiving chamber of the holder, said chamber being so shaped and dimensioned that said light source fills generally the entire space of said chamber.
2. An optical position indicator according to claim 1, wherein said light source comprises a light-emitting diode.
3. An optical position indicator according to claim 1, further including a tubular support inserted at one end into a bore of said holder and prevented, by a generally U-shaped stop spring from being accidentally removed from said holder, said stop spring being received in a generally U-shaped groove in said holder, said holder and said spring being complementary with each other for mutual interlocking to prevent the rotation of the spring in the groove, and having a pair of inwardly bent end portions resiliently urged into contact one with each of a pair of diametrically opposed slots in said tubular support, whereby the spring prevents movement of the holder relative to the support both longitudinally of and about the axis of the tubular support.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986105946U JPS6311522U (en) | 1986-07-10 | 1986-07-10 | |
| JP61-105946 | 1986-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1312363C true CA1312363C (en) | 1993-01-05 |
Family
ID=14421010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000539922A Expired - Fee Related CA1312363C (en) | 1986-07-10 | 1987-06-17 | Optical position indicator for fastener attaching machine |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0253292B1 (en) |
| JP (1) | JPS6311522U (en) |
| KR (1) | KR900007932Y1 (en) |
| AU (1) | AU573479B2 (en) |
| CA (1) | CA1312363C (en) |
| DE (1) | DE3766553D1 (en) |
| HK (1) | HK64293A (en) |
| MY (1) | MY101084A (en) |
| SG (1) | SG40793G (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0311208Y2 (en) * | 1986-08-26 | 1991-03-19 | ||
| DE10119018A1 (en) * | 2001-04-18 | 2002-10-24 | Emhart Llc Newark | Positioning and/or mounting aid for devices used for machining components, has arrangement for producing light or laser beam for direction from reference position outside device, especially machining space, to reference point |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1300672A (en) * | 1970-01-13 | 1972-12-20 | Nitto Giken Kk | Method and apparatus for centering a tool in drilling machines |
| US3964661A (en) * | 1974-10-23 | 1976-06-22 | Textron, Inc. | Apparatus for attaching pronged and mating elements to articles |
| CA1038826A (en) * | 1975-07-18 | 1978-09-19 | Textron Inc. | Apparatus for attaching pronged and mating elements to articles |
| JPS6040434B2 (en) * | 1978-09-08 | 1985-09-11 | 鳥居薬品株式会社 | Indazole derivative and its manufacturing method |
| US4438567A (en) * | 1981-12-07 | 1984-03-27 | Raiha A P | Center locator for alignment of work to machine spindle |
| JPS60113322U (en) * | 1983-12-29 | 1985-07-31 | 日本ノ−シヨン工業株式会社 | Mounting position indicating device for button mounting machine |
-
1986
- 1986-07-10 JP JP1986105946U patent/JPS6311522U/ja active Pending
-
1987
- 1987-06-17 CA CA000539922A patent/CA1312363C/en not_active Expired - Fee Related
- 1987-06-22 AU AU74551/87A patent/AU573479B2/en not_active Ceased
- 1987-06-24 MY MYPI87000882A patent/MY101084A/en unknown
- 1987-07-08 EP EP87109859A patent/EP0253292B1/en not_active Expired - Lifetime
- 1987-07-08 DE DE8787109859T patent/DE3766553D1/en not_active Expired - Lifetime
- 1987-07-09 KR KR2019870011248U patent/KR900007932Y1/en not_active IP Right Cessation
-
1993
- 1993-04-08 SG SG407/93A patent/SG40793G/en unknown
- 1993-07-01 HK HK642/93A patent/HK64293A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0253292A3 (en) | 1988-09-14 |
| KR880001699U (en) | 1988-04-06 |
| EP0253292A2 (en) | 1988-01-20 |
| AU7455187A (en) | 1988-01-14 |
| AU573479B2 (en) | 1988-06-09 |
| HK64293A (en) | 1993-07-09 |
| JPS6311522U (en) | 1988-01-26 |
| EP0253292B1 (en) | 1990-12-05 |
| SG40793G (en) | 1993-06-11 |
| KR900007932Y1 (en) | 1990-09-03 |
| DE3766553D1 (en) | 1991-01-17 |
| MY101084A (en) | 1991-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |