GB1238596A - - Google Patents
Info
- Publication number
- GB1238596A GB1238596A GB1238596DA GB1238596A GB 1238596 A GB1238596 A GB 1238596A GB 1238596D A GB1238596D A GB 1238596DA GB 1238596 A GB1238596 A GB 1238596A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- folded
- carriage
- contact
- slide
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/04—Undulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
- B21D11/07—Making serpentine-shaped articles by bending essentially in one plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/04—Apparatus or processes specially adapted for manufacturing resistors adapted for winding the resistive element
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
1,238,596. Making resistors; angular bending. LA TELEMECANIQUE ELECTRIQUE. 6 June, 1969 [6 June, 1968], No. 28827/69. Headings B3A and B3E. A device for folding metal strip into serpentine form, suitable for making electrical resistors, comprises a series of linked members 7, Fig. 1, which define an upwardly opening groove 30 for supporting the strip, the members being pivotable transversely at a working station to fold the strip. The strip is fed from a coil 2, through straightening roller 5, and along a table 1 to a working station 10, 11. Each member 7, Fig. 12, comprises two metal plates held together at their thickened base portion 29 by screws 26. As a result each link has along its upper surface the groove 30 for holding the strip. The individual links 25 are hinged by passing a pin through the holes of two pairs of knuckles. The strip is folded at right angles by any suitable means so that it engages a groove provided between two plates projecting on top of cross-slide 9 so as to be level with the upper edge of the linked member 7. The initial condition is that in which the cross-slide 9 is pushed by jack 10 so that it activates contact 13 in order to displace carriage 11 towards the left as seen in Fig. 6 by an amount equal to the thickness of one link 25. Pushed by counterweight 61, Fig. 2, chain 43 follows the advance movement of the carriage so that members 7 are moved until hinged projections 38b meets contact 40. This contact stops the carriage 11 and activates jack 10 which starts pulling the cross-slide. At this moment the projection 38a has just left the gap between guides 6a, 6b so that the first link 25a, under the combined influence of the continuous thrust supplied by the counterweight 61 and the traction exercised by the jack 10, folds back against the plates defining the groove in the cross slide 9 in which the end of the strip is locked. When the cross-slide 9 has activated contact 12, the carriage 11 is displaced to the left as seen in Fig. 6. Thus carriage 11 and the member 7 move until the projection 38c actuates contact 41 which stops the carriage and activates the jack 10. The link 25b is then in a position to be folded against link 25a within the space between the wings of the cross-slide 7. When this folding operation is completed the projection 38c is touching contact 40 so that after the action of contact 13 has again set the carriage in motion, this movement will be stopped when the projection 38c meets contact 40. Thus the strip is folded to the required number of bends whereupon a powered vice compresses the container chains 25 and the folded strip is then extracted by activating pins 96. In order to make electrical resistors a folded section S1 is joined by a straight strip 100 to a folded section S 2 . The strip portion 100 is then folded to the shape shown in Fig. 18 by placing the portion 100 obliquely across a grooved die and applying a punch 109, Fig. 24. A limit switch detects the end of the operative movement of the punch 109 whereupon plates 117A and 117B are pushed by jacks 115 so as to bend the strip to form a looped shape. The formed loop is then flattened by placing it in a cavity 137, Fig. 27, and operating hammer 140 after which the hammer is pivoted away. Two flaps 132 are folded down towards one another by jacks 134 so that the sections S 1 and S 2 assume the position shown in Fig. 19.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR154029 | 1968-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1238596A true GB1238596A (en) | 1971-07-07 |
Family
ID=8650880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1238596D Expired GB1238596A (en) | 1968-06-06 | 1969-06-06 |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1928764A1 (en) |
FR (1) | FR1590618A (en) |
GB (1) | GB1238596A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106743632A (en) * | 2017-03-31 | 2017-05-31 | 东莞市瑾耀精密设备有限公司 | A kind of automatic strip rolls over grain machine |
CN114050015A (en) * | 2021-11-19 | 2022-02-15 | 彩智电子科技(江西)有限公司 | Length-adjustable strip folding machine capable of protecting materials for production of chip resistors |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2397705A1 (en) * | 1977-07-11 | 1979-02-09 | Siemens Ag | Printed circuit board strip resistor - has integral solder tags and includes thirty to ninety-five percent copper |
CN115255200A (en) * | 2022-08-26 | 2022-11-01 | 浙江华辉电气股份有限公司 | Electric wire bending device |
-
1968
- 1968-06-06 FR FR1590618D patent/FR1590618A/fr not_active Expired
-
1969
- 1969-06-06 GB GB1238596D patent/GB1238596A/en not_active Expired
- 1969-06-06 DE DE19691928764 patent/DE1928764A1/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106743632A (en) * | 2017-03-31 | 2017-05-31 | 东莞市瑾耀精密设备有限公司 | A kind of automatic strip rolls over grain machine |
CN106743632B (en) * | 2017-03-31 | 2023-07-25 | 东莞市瑾耀精密设备有限公司 | Automatic divide strip to roll over grain machine |
CN114050015A (en) * | 2021-11-19 | 2022-02-15 | 彩智电子科技(江西)有限公司 | Length-adjustable strip folding machine capable of protecting materials for production of chip resistors |
CN114050015B (en) * | 2021-11-19 | 2023-04-07 | 彩智电子科技(江西)有限公司 | Length-adjustable strip folding machine capable of protecting materials for production of chip resistors |
Also Published As
Publication number | Publication date |
---|---|
FR1590618A (en) | 1970-04-20 |
DE1928764A1 (en) | 1970-01-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |