US20070204667A1 - Feeder for punch - Google Patents
Feeder for punch Download PDFInfo
- Publication number
- US20070204667A1 US20070204667A1 US11/308,034 US30803406A US2007204667A1 US 20070204667 A1 US20070204667 A1 US 20070204667A1 US 30803406 A US30803406 A US 30803406A US 2007204667 A1 US2007204667 A1 US 2007204667A1
- Authority
- US
- United States
- Prior art keywords
- metal strip
- plate
- unit
- feeder according
- feeder
- 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.)
- Abandoned
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Classifications
-
- 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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
- B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
Definitions
- the present invention relates to a punch and, more particularly, to a feeder for a punch.
- the feeder includes a feeding unit 1 , a guiding unit 4 , a bending unit 3 and a transferring unit 2 .
- a metal strip or plate 5 is rolled.
- the roll is installed on the feeding unit 1 .
- the feeding unit 1 rotates the roll so as to feed the metal strip 5 .
- the guiding unit 4 guides the metal strip 5 to the bending unit 3 .
- a leading edge of the metal strip 5 travels counterclockwise at a large curvature.
- the bending unit 3 pivots so as to bend the metal strip 5 .
- the leading edge of the metal strip 5 travels clockwise at a small curvature.
- the bending unit 3 guides the metal strip 5 to the transferring unit 2 .
- the transferring unit 2 transfers the metal strip 5 to another unit of the punch.
- the rotation of the feeding unit 1 and the pivoting of the bending unit 3 must be coordinated. The coordination is conducted manually.
- the present invention is therefore intended to obviate or at least alleviate the problems encountered in prior art.
- a feeder for a punch.
- the feeder includes a feeding unit, a bending unit and a transferring unit.
- the feeding unit feeds a roll of a metal strip that includes a leading edge.
- the bending unit includes a plate for bending the metal strip, a sensor for generating at least one signal on detecting the arrival of the leading edge of the metal strip at the plate and a controller for actuating the plate on receiving the signal.
- the transferring unit transfers the metal strip to another unit of the punch.
- An advantage of the feeder of the present invention is improved safety for an operator since the operator can stay away from the bending unit because of the automatic operation of the bending unit.
- Another advantage of the feeder of the present invention is improved throughput due to the automatic operation of the bending unit.
- FIG. 1 is a side view of a feeder for a punch according to the preferred embodiment of the present invention.
- FIG. 2 is a side view of the feeder in another position than shown in FIG. 1 .
- FIG. 3 is a side view of the feeder in another position than shown in FIG. 2 .
- FIG. 4 is a side view of the feeder in another position than shown in FIG. 3 .
- FIG. 5 is a side view of a conventional feeder for a punch.
- FIG. 6 is a side view of the feeder in another position than shown in FIG. 5 .
- FIG. 7 is a side view of the feeder in another position than shown in FIG. 6 .
- the feeder includes a feeding unit 10 , a bending unit 30 and a transferring unit 20 .
- a metal strip 40 is rolled.
- the roll of the metal strip 40 is installed on the feeding unit 10 .
- the feeding unit 10 rotates the roll so as to feed the metal strip 40 .
- a leading edge 41 of the metal strip 40 travels at a large curvature.
- the bending unit 30 pivots so as to bend the metal strip 40 .
- the leading edge 41 of the metal strip 40 travels at a small opposite curvature.
- the bending unit 30 guides the metal strip 40 to the transferring unit 20 .
- the transferring unit 20 transfers the metal strip 40 to another unit of the punch.
- the feeding unit 10 includes a shaft 11 for rotation and a plurality of spoke-liked extenders 111 extensible from the shaft 11 to the roll of the metal strip 40 .
- the shaft 11 rotates the roll of the metal strip 40 through the extenders 111 .
- the feeding unit 10 includes a restraint 12 , an abutting element 13 and a guiding element 14 .
- the restraint 12 , abutting element 13 and the guiding element 14 are conventional and will not be described in detail.
- the guiding element 14 guides the metal strip 40 to the bending unit 30 .
- the bending unit 30 includes a plate 33 for contact with the metal strip 40 , an arm 32 for pivoting the plate 33 and a cylinder 321 for driving the arm 32 .
- the plate 33 includes a first edge 331 and a second edge 332 .
- the cylinder 321 may be hydraulic or pneumatic.
- the cylinder 321 may be replaced with an electrical mechanism.
- the transferring unit 20 includes first pair of driving rollers 21 , a second pair of driving rollers 22 and a group of flattening rollers 23 .
- the rotation of the feeding unit 10 and the pivoting of the bending unit 30 must be coordinated.
- the rotation of the feeding unit 10 is controlled manually.
- the pivoting of the bending unit 30 is controlled automatically.
- a sensor 34 and a controller 31 are used.
- the sensor 34 is attached to the plate 33 near the second edge 332 .
- the sensor 34 is preferably embedded in the plate 33 for protection from the leading edge 41 of the metal strip 40 .
- the controller 31 is electrically connected to the sensor 34 on one hand and operatively connected to the cylinder 321 on the other hand.
- the controller 31 receives signals from the sensor 34 and accordingly actuates the cylinder 321 .
- the pivoting of the bending unit 30 is conducted at two steps.
- the leading edge 41 of the metal strip 40 reaches the sensor 34 .
- the sensor 34 On detecting the arrival of the metal strip 40 , the sensor 34 sends a signal to the controller 31 that in turn actuates the cylinder 321 .
- the arm 32 pivots the plate 33 , and this is the first step.
- the sensor 34 departs from the metal strip 40 since the plate 33 moves faster than the metal strip 40 .
- the pivoting of the plate 33 is stopped.
- the advancing of the metal strip 40 continues so that the leading edge 41 of the metal strip 40 reaches the sensor 34 again.
- the sensor 34 On detecting the arrival of the metal strip 40 again, the sensor 34 sends a signal to the controller 31 that in turn actuates the cylinder 321 again.
- the arm 32 pivots the plate 33 again, and this is the second step.
- the pivoting of the plate 33 is stopped so that the position of the plate 33 is retained.
- the metal strip 40 continues to advance and enter the transferring unit 20 .
- the transferring unit 20 flattens and transfers the metal strip 40 to another unit of the punch.
- the sensor 34 detects the departure and sends a signal to the controller 31 that in turn actuates the cylinder 321 in an opposite direction.
- the arm 32 returns the plate 33 to its original position.
- the feeder of the present invention exhibits at least two advantages. Firstly, for the automatic operation of the bending unit 30 , an operator can stay away from the bending unit 30 so that the operator operates the feeder of the present invention safer than he or she does a conventional feeder. Secondly, for the automatic operation of the bending unit 30 , the throughput of the feeder of the present invention is faster than that of a conventional feeder.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
A feeder is provided for a punch. The feeder includes a feeding unit, a bending unit and a transferring unit. The feeding unit feeds a roll of a metal strip that includes a leading edge. The bending unit includes a plate for bending the metal strip, a sensor for generating at least one signal on detecting the arrival of the leading edge of the metal strip at the plate and a controller for actuating the plate on receiving the signal. The transferring unit transfers the metal strip to another unit of the punch.
Description
- 1. Field of Invention
- The present invention relates to a punch and, more particularly, to a feeder for a punch.
- 2. Related Prior Art
- Referring to
FIGS. 5 through 7 , there is shown a conventional feeder for a punch. The feeder includes afeeding unit 1, a guidingunit 4, abending unit 3 and a transferringunit 2. A metal strip orplate 5 is rolled. The roll is installed on thefeeding unit 1. Thefeeding unit 1 rotates the roll so as to feed themetal strip 5. The guidingunit 4 guides themetal strip 5 to thebending unit 3. When reaching thebending unit 3, a leading edge of themetal strip 5 travels counterclockwise at a large curvature. Thebending unit 3 pivots so as to bend themetal strip 5. When leaving thebending unit 3, the leading edge of themetal strip 5 travels clockwise at a small curvature. Thebending unit 3 guides themetal strip 5 to the transferringunit 2. The transferringunit 2 transfers themetal strip 5 to another unit of the punch. The rotation of thefeeding unit 1 and the pivoting of thebending unit 3 must be coordinated. The coordination is conducted manually. To this end, there arebuttons 6 and 7 for controlling the rotation of thefeeding unit 1 and the pivoting of thebending unit 3, respectively. It however requires an experienced and concentrated operator to precisely operate thebuttons 6 and 7. Otherwise, undesired situations would occur. Referring toFIG. 6 , the rotation of thefeeding unit 1 is too fast while the pivoting of thebending unit 3 is too slow so that the leading edge of themetal strip 5 is too high for the transferringunit 2 to receive. Referring toFIG. 7 , the rotation of thefeeding unit 1 is too slow while the pivoting of thebending unit 3 is too fast so that thebending unit 3 hinders the advancing of the leading edge of themetal strip 5. - The present invention is therefore intended to obviate or at least alleviate the problems encountered in prior art.
- According to the present invention, a feeder is provided for a punch. The feeder includes a feeding unit, a bending unit and a transferring unit. The feeding unit feeds a roll of a metal strip that includes a leading edge. The bending unit includes a plate for bending the metal strip, a sensor for generating at least one signal on detecting the arrival of the leading edge of the metal strip at the plate and a controller for actuating the plate on receiving the signal. The transferring unit transfers the metal strip to another unit of the punch.
- An advantage of the feeder of the present invention is improved safety for an operator since the operator can stay away from the bending unit because of the automatic operation of the bending unit.
- Another advantage of the feeder of the present invention is improved throughput due to the automatic operation of the bending unit.
- Other advantages and features of the present invention will become apparent from the following description referring to the drawings.
- The present invention will be described through detailed illustration of the preferred embodiment referring to the drawings.
-
FIG. 1 is a side view of a feeder for a punch according to the preferred embodiment of the present invention. -
FIG. 2 is a side view of the feeder in another position than shown inFIG. 1 . -
FIG. 3 is a side view of the feeder in another position than shown inFIG. 2 . -
FIG. 4 is a side view of the feeder in another position than shown inFIG. 3 . -
FIG. 5 is a side view of a conventional feeder for a punch. -
FIG. 6 is a side view of the feeder in another position than shown inFIG. 5 . -
FIG. 7 is a side view of the feeder in another position than shown inFIG. 6 . - Referring to
FIGS. 1 through 4 , there is shown a feeder for a punch according to the preferred embodiment of the present invention. The feeder includes afeeding unit 10, abending unit 30 and a transferringunit 20. Ametal strip 40 is rolled. The roll of themetal strip 40 is installed on thefeeding unit 10. Thefeeding unit 10 rotates the roll so as to feed themetal strip 40. On reaching thebending unit 30, a leadingedge 41 of themetal strip 40 travels at a large curvature. Thebending unit 30 pivots so as to bend themetal strip 40. When leaving thebending unit 30, the leadingedge 41 of themetal strip 40 travels at a small opposite curvature. Thebending unit 30 guides themetal strip 40 to the transferringunit 20. The transferringunit 20 transfers themetal strip 40 to another unit of the punch. - The
feeding unit 10 includes ashaft 11 for rotation and a plurality of spoke-likedextenders 111 extensible from theshaft 11 to the roll of themetal strip 40. Theshaft 11 rotates the roll of themetal strip 40 through theextenders 111. Thefeeding unit 10 includes arestraint 12, anabutting element 13 and a guidingelement 14. Therestraint 12,abutting element 13 and the guidingelement 14 are conventional and will not be described in detail. The guidingelement 14 guides themetal strip 40 to thebending unit 30. - The
bending unit 30 includes aplate 33 for contact with themetal strip 40, anarm 32 for pivoting theplate 33 and acylinder 321 for driving thearm 32. Theplate 33 includes afirst edge 331 and asecond edge 332. Thecylinder 321 may be hydraulic or pneumatic. Thecylinder 321 may be replaced with an electrical mechanism. - The transferring
unit 20 includes first pair ofdriving rollers 21, a second pair ofdriving rollers 22 and a group offlattening rollers 23. - The rotation of the
feeding unit 10 and the pivoting of thebending unit 30 must be coordinated. The rotation of thefeeding unit 10 is controlled manually. The pivoting of the bendingunit 30 is controlled automatically. To this end, asensor 34 and acontroller 31 are used. Thesensor 34 is attached to theplate 33 near thesecond edge 332. Thesensor 34 is preferably embedded in theplate 33 for protection from the leadingedge 41 of themetal strip 40. Thecontroller 31 is electrically connected to thesensor 34 on one hand and operatively connected to thecylinder 321 on the other hand. Thecontroller 31 receives signals from thesensor 34 and accordingly actuates thecylinder 321. The pivoting of the bendingunit 30 is conducted at two steps. - Referring to
FIG. 1 , the leadingedge 41 of themetal strip 40 reaches thesensor 34. On detecting the arrival of themetal strip 40, thesensor 34 sends a signal to thecontroller 31 that in turn actuates thecylinder 321. Thearm 32 pivots theplate 33, and this is the first step. - Referring to
FIG. 2 , thesensor 34 departs from themetal strip 40 since theplate 33 moves faster than themetal strip 40. The pivoting of theplate 33 is stopped. - Referring to
FIG. 3 , the advancing of themetal strip 40 continues so that the leadingedge 41 of themetal strip 40 reaches thesensor 34 again. On detecting the arrival of themetal strip 40 again, thesensor 34 sends a signal to thecontroller 31 that in turn actuates thecylinder 321 again. Thearm 32 pivots theplate 33 again, and this is the second step. - Referring to
FIG. 4 , the pivoting of theplate 33 is stopped so that the position of theplate 33 is retained. Themetal strip 40 continues to advance and enter the transferringunit 20. The transferringunit 20 flattens and transfers themetal strip 40 to another unit of the punch. - When a tail edge of the
metal strip 40 moves beyond thesensor 34, thesensor 34 detects the departure and sends a signal to thecontroller 31 that in turn actuates thecylinder 321 in an opposite direction. Thearm 32 returns theplate 33 to its original position. - The feeder of the present invention exhibits at least two advantages. Firstly, for the automatic operation of the bending
unit 30, an operator can stay away from the bendingunit 30 so that the operator operates the feeder of the present invention safer than he or she does a conventional feeder. Secondly, for the automatic operation of the bendingunit 30, the throughput of the feeder of the present invention is faster than that of a conventional feeder. - The present invention has been described through the illustration of the preferred embodiment. Those skilled in the art can derive variations from the preferred embodiment without departing from the scope of the present invention. Therefore, the preferred embodiment shall not limit the scope of the present invention defined in the claims.
Claims (15)
1. A feeder for a punch, the feeder comprising:
a feeding unit for feeding a roll of a metal strip that includes a leading edge;
a bending unit comprising a plate for bending the metal strip, a sensor for generating at least one signal on detecting the arrival of the leading edge of the metal strip at the plate and a controller for actuating the plate on receiving the signal; and
a transferring unit for transferring the metal strip from the bending unit to another unit of the punch.
2. The feeder according to claim 1 wherein the operation of the plate comprises a first step and a second step.
3. The feeder according to claim 2 wherein on detecting the arrival of the leading edge of the metal strip, the sensor sends a first signal to the controller that in turn causes the plate to pivot faster than the metal strip advances so that the plate departs from the leading edge in the first step, wherein on detecting the arrival of the leading edge of the metal strip again, the sensor sends a second signal to the controller that in turn causes the plate to pivot further in the second step.
4. The feeder according to claim 1 wherein the sensor is embedded in the plate.
5. The feeder according to claim 1 wherein the plate comprises a first edge and a second edge closer to the feeding unit than the first edge is, wherein the sensor is located near the second edge.
6. The feeder according to claim 1 wherein the bending unit comprises an arm for pivoting the plate.
7. The feeder according to claim 6 wherein the bending unit comprises a mechanism for rocking the arm.
8. The feeder according to claim 7 wherein the mechanism is a cylinder.
9. The feeder according to claim 8 wherein the cylinder is hydraulic.
10. The feeder according to claim 8 wherein the cylinder is pneumatic.
11. The feeder according to claim 1 wherein the feeding unit comprises a restraint for restraining the metal strip.
12. The feeder according to claim 11 wherein the feeding unit comprises an abutting element for abutting the metal strip after the restraint.
13. The feeder according to claim 12 wherein the feeding unit comprises a guiding element for guiding the metal strip to the bending unit after the abutting element.
14. The feeder according to claim 1 wherein the transferring unit comprises at least one pair of driving rollers for rolling and driving the metal strip.
15. The feeder according to claim 14 wherein the transferring unit comprises, near the driving rollers, a group of flattening rollers for rolling and flattening the metal strip.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/308,034 US20070204667A1 (en) | 2006-03-03 | 2006-03-03 | Feeder for punch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/308,034 US20070204667A1 (en) | 2006-03-03 | 2006-03-03 | Feeder for punch |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070204667A1 true US20070204667A1 (en) | 2007-09-06 |
Family
ID=38470319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/308,034 Abandoned US20070204667A1 (en) | 2006-03-03 | 2006-03-03 | Feeder for punch |
Country Status (1)
Country | Link |
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US (1) | US20070204667A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11305328B2 (en) * | 2019-06-27 | 2022-04-19 | Toyota Motor Engineering & Manufacturing North America, Inc. | Blanking die apparatuses with infeed assemblies |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2227387A (en) * | 1939-11-13 | 1940-12-31 | Associated Patentees Inc | Stock reel |
US2527976A (en) * | 1944-09-07 | 1950-10-31 | Aetna Standard Eng Co | Apparatus for handling strip |
US4117989A (en) * | 1977-08-31 | 1978-10-03 | Mesta Machine Company | Method and apparatus for coil handling at mill entry |
US4214467A (en) * | 1979-03-05 | 1980-07-29 | Kaiser Aluminum & Chemical Corporation | Metal coil handling system |
US5096134A (en) * | 1989-04-26 | 1992-03-17 | Japan Tobacco Inc. | Device for unrolling and cutting leading end portion of strip-like material wound in roll |
US6691544B2 (en) * | 2001-08-10 | 2004-02-17 | U.S. Properties, Inc. | Method and apparatus to uncoil and dekink coiled material |
-
2006
- 2006-03-03 US US11/308,034 patent/US20070204667A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2227387A (en) * | 1939-11-13 | 1940-12-31 | Associated Patentees Inc | Stock reel |
US2527976A (en) * | 1944-09-07 | 1950-10-31 | Aetna Standard Eng Co | Apparatus for handling strip |
US4117989A (en) * | 1977-08-31 | 1978-10-03 | Mesta Machine Company | Method and apparatus for coil handling at mill entry |
US4214467A (en) * | 1979-03-05 | 1980-07-29 | Kaiser Aluminum & Chemical Corporation | Metal coil handling system |
US5096134A (en) * | 1989-04-26 | 1992-03-17 | Japan Tobacco Inc. | Device for unrolling and cutting leading end portion of strip-like material wound in roll |
US6691544B2 (en) * | 2001-08-10 | 2004-02-17 | U.S. Properties, Inc. | Method and apparatus to uncoil and dekink coiled material |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11305328B2 (en) * | 2019-06-27 | 2022-04-19 | Toyota Motor Engineering & Manufacturing North America, Inc. | Blanking die apparatuses with infeed assemblies |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ELITE MACHINE AND DESIGN LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HO, CHI-MIN;REEL/FRAME:017249/0886 Effective date: 20060303 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |