US20060048559A1 - Method for making punch head of paper punch - Google Patents
Method for making punch head of paper punch Download PDFInfo
- Publication number
- US20060048559A1 US20060048559A1 US10/934,407 US93440704A US2006048559A1 US 20060048559 A1 US20060048559 A1 US 20060048559A1 US 93440704 A US93440704 A US 93440704A US 2006048559 A1 US2006048559 A1 US 2006048559A1
- Authority
- US
- United States
- Prior art keywords
- section
- sections
- punching
- metal material
- cylindrical metal
- 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
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K5/00—Making tools or tool parts, e.g. pliers
- B21K5/20—Making working faces of dies, either recessed or outstanding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K5/00—Making tools or tool parts, e.g. pliers
- B21K5/12—Making tools or tool parts, e.g. pliers other cutting tools
Definitions
- the present invention relates to a method for making punch heads by an efficient way.
- FIGS. 1 and 2 A conventional method for making punch heads is disclosed in FIGS. 1 and 2 , and generally includes the following steps:
- Step 1 preparing a long tube 11 ;
- Step 2 cutting the long tube 11 in sections at desired length
- Step 3 making a groove 14 or a hole 15 in each section and a rounded edge 13 defined in a first end 12 of each section;
- Step 4 making a punching edge 16 in a second of each section by a tool 20 ;
- Step 5 proceeding a heat treatment to each section
- Step 6 surface grinding for each section
- Step 7 anti-rust treatment
- Step 8 obtaining a final punch head 10 .
- each long tube 11 can only be made into limited number of sections.
- the sections are made to have the punching edge 16 one by one and this is a time-consuming job.
- the tools 20 are worn out quickly and the debris of the long tubes and sections is harmful to the manufacturers.
- the present invention intends to provide an easy and efficient way to make the punch heads which can be made within a short period of time.
- the present invention relates to a method for making punch heads and the method comprises:
- step 1 pulling cylindrical metal material wrapped around a mandrel
- step 2 cutting the cylindrical metal material into sections
- step 3 inserting the sections into concavity of a mold set and punching a recess in a first end of each section by a first tool;
- step 4 punching the recess into V-shaped recess and including a punching edge by a second tool
- step 5 pushing the sections out from the mold set by a pushing rod.
- FIG. 1 shows the steps of a conventional method for making a punch head
- FIG. 2 shows the diagrams of the results of the steps in FIG. 1 ;
- FIG. 3 shows the steps of the method of the present invention for making a punch head
- FIG. 4 shows the diagrams of the results of the steps in FIG. 3 ;
- FIG. 5 is a perspective view to show a first type of the punch head made by the method of the present invention.
- FIG. 6 is a perspective view to show a second type of the punch head made by the method of the present invention.
- the method of the present invention for making punch heads comprises the following steps:
- step 1 pulling an end of a roll of solid strip of cylindrical metal material 30 wrapped around a mandrel 300 and two guide wheels 40 clamping forward the end of the cylindrical metal material 30 ;
- step 2 cutting the cylindrical metal material 30 into sections 31 ;
- step 3 inserting the sections 31 into concavity 51 of a mold set 50 and punching a recess 311 in a first end of each section 31 by a first tool 52 , a second end of each section 31 being pressed to form a rounded edge 312 ;
- step 4 punching the recess 311 into a sharp V-shaped recess 313 and including a punching edge by a second tool 53 ;
- step 5 pushing the sections 31 out from the mold set 50 by a pushing rod 54 ;
- step 6 making a groove 314 or a hole 315 in the section 31 according to practical needs as shown in FIGS. 5 and 6 ;
- step 7 proceeding a heat treatment to each section 31 ;
- step 8 surface grinding for each section 31 ;
- step 9 applying anti-rust treatment to each section 31 ;
- step 10 obtaining a final punch head 60 .
- the concavity 51 includes a narrow section which forms an inclined shoulder 511 such that when the first end of each section 31 is punched into a recess 311 , the second end of each section 31 is pressed onto the inclined shoulder 511 to form the rounded edge 312 .
- the cylindrical metal material 30 occupies less space than the long tube in the conventional method so that more sections 31 can be made continuously within a short period of time.
- the mold set 50 can be rotated to be treated by different stations where different tools 52 , 53 are located, by this way, the manufacturing time can be saved.
- the solid punch head 60 has better structural strength and the V-shaped punching edge efficiently penetrates document.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A method for making punch heads includes a step of pulling a cylindrical metal material wrapped around a mandrel; a step of cutting the cylindrical metal material into sections; a step of inserting the sections into concavity of a mold set and punching a recess in a first end of each section by a first tool; a step of punching the recess into V-shaped recess and including a punching edge by a second tool; a step of pushing the sections out from the mold set by a pushing rod; and a step of obtaining a punch head.
Description
- The present invention relates to a method for making punch heads by an efficient way.
- A conventional method for making punch heads is disclosed in
FIGS. 1 and 2 , and generally includes the following steps: - Step 1: preparing a
long tube 11; - Step 2: cutting the
long tube 11 in sections at desired length; - Step 3: making a
groove 14 or ahole 15 in each section and arounded edge 13 defined in afirst end 12 of each section; - Step 4: making a
punching edge 16 in a second of each section by atool 20; - Step 5: proceeding a heat treatment to each section;
- Step 6: surface grinding for each section;
- Step 7: anti-rust treatment; and
- Step 8: obtaining a
final punch head 10. - It is noted that the manufacturers have to install the
long tube 11 frequently and eachlong tube 11 can only be made into limited number of sections. The sections are made to have the punchingedge 16 one by one and this is a time-consuming job. Besides, thetools 20 are worn out quickly and the debris of the long tubes and sections is harmful to the manufacturers. - The present invention intends to provide an easy and efficient way to make the punch heads which can be made within a short period of time.
- The present invention relates to a method for making punch heads and the method comprises:
- step 1: pulling cylindrical metal material wrapped around a mandrel;
- step 2: cutting the cylindrical metal material into sections;
- step 3: inserting the sections into concavity of a mold set and punching a recess in a first end of each section by a first tool;
- step 4: punching the recess into V-shaped recess and including a punching edge by a second tool; and
- step 5: pushing the sections out from the mold set by a pushing rod.
- The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
-
FIG. 1 shows the steps of a conventional method for making a punch head; -
FIG. 2 shows the diagrams of the results of the steps inFIG. 1 ; -
FIG. 3 shows the steps of the method of the present invention for making a punch head; -
FIG. 4 shows the diagrams of the results of the steps inFIG. 3 ; -
FIG. 5 is a perspective view to show a first type of the punch head made by the method of the present invention, and -
FIG. 6 is a perspective view to show a second type of the punch head made by the method of the present invention. - Referring to FIGS. 3 to 4, the method of the present invention for making punch heads comprises the following steps:
- step 1: pulling an end of a roll of solid strip of
cylindrical metal material 30 wrapped around amandrel 300 and twoguide wheels 40 clamping forward the end of thecylindrical metal material 30; - step 2: cutting the
cylindrical metal material 30 intosections 31; - step 3: inserting the
sections 31 intoconcavity 51 of a mold set 50 and punching arecess 311 in a first end of eachsection 31 by afirst tool 52, a second end of eachsection 31 being pressed to form arounded edge 312; - step 4: punching the
recess 311 into a sharp V-shaped recess 313 and including a punching edge by asecond tool 53; - step 5: pushing the
sections 31 out from the mold set 50 by a pushingrod 54; - step 6: making a
groove 314 or ahole 315 in thesection 31 according to practical needs as shown inFIGS. 5 and 6 ; - step 7: proceeding a heat treatment to each
section 31; - step 8: surface grinding for each
section 31; - step 9: applying anti-rust treatment to each
section 31; and - step 10: obtaining a
final punch head 60. - In step 3, the
concavity 51 includes a narrow section which forms aninclined shoulder 511 such that when the first end of eachsection 31 is punched into arecess 311, the second end of eachsection 31 is pressed onto theinclined shoulder 511 to form therounded edge 312. It is noted that thecylindrical metal material 30 occupies less space than the long tube in the conventional method so thatmore sections 31 can be made continuously within a short period of time. Themold set 50 can be rotated to be treated by different stations wheredifferent tools solid punch head 60 has better structural strength and the V-shaped punching edge efficiently penetrates document. - While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims (6)
1. A method for making punch heads, comprising:
step 1: pulling cylindrical metal material wrapped around a mandrel;
step 2: cutting the cylindrical metal material into sections;
step 3: inserting the sections into concavity of a mold set and punching a recess in a first end of each section by a first tool;
step 4: punching the recess into a V-shaped recess and including a punching edge by a second tool;
step 5: pushing the sections out from the mold set by a pushing rod;
step 6: obtaining a punch head.
2. The method as claimed in claim 1 further comprising two guide wheels and the cylindrical metal material being transported by rotation of the two guide wheels.
3. The method as claimed in claim 1 , wherein a second end of each section is pressed to form a rounded edge in step 3.
4. The method as claimed in claim 1 , wherein the cylindrical metal material is a solid cylindrical strip.
5. The method as claimed in claim 1 , wherein the concavity includes a narrow section which forms an inclined shoulder and the second end of each section is pressed onto the inclined shoulder to form the rounded edge.
6. The method as claimed in claim 1 further comprising a step of making a groove or a hole in the section between steps 5 and 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/934,407 US20060048559A1 (en) | 2004-09-07 | 2004-09-07 | Method for making punch head of paper punch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/934,407 US20060048559A1 (en) | 2004-09-07 | 2004-09-07 | Method for making punch head of paper punch |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060048559A1 true US20060048559A1 (en) | 2006-03-09 |
Family
ID=35994864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/934,407 Abandoned US20060048559A1 (en) | 2004-09-07 | 2004-09-07 | Method for making punch head of paper punch |
Country Status (1)
Country | Link |
---|---|
US (1) | US20060048559A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080236353A1 (en) * | 2007-03-30 | 2008-10-02 | Staples Brands Group | Hole punch |
USD658716S1 (en) | 2011-05-25 | 2012-05-01 | Staples The Office Superstore, Llc | Hole punch |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3650163A (en) * | 1969-06-07 | 1972-03-21 | Holland Ltd I | Punches |
US3759080A (en) * | 1971-06-14 | 1973-09-18 | Tokai Rika Co Ltd | Cold forcing method and apparatus for producing a terminal |
US4241598A (en) * | 1978-10-16 | 1980-12-30 | Sack & Kiesselbach Maschinenfabrik Gmbh | Method for producing a cross-slotted heading die |
US4404830A (en) * | 1975-01-16 | 1983-09-20 | L. Schuler Gmbh | Method and apparatus for pressing parts from round stock |
-
2004
- 2004-09-07 US US10/934,407 patent/US20060048559A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3650163A (en) * | 1969-06-07 | 1972-03-21 | Holland Ltd I | Punches |
US3759080A (en) * | 1971-06-14 | 1973-09-18 | Tokai Rika Co Ltd | Cold forcing method and apparatus for producing a terminal |
US4404830A (en) * | 1975-01-16 | 1983-09-20 | L. Schuler Gmbh | Method and apparatus for pressing parts from round stock |
US4241598A (en) * | 1978-10-16 | 1980-12-30 | Sack & Kiesselbach Maschinenfabrik Gmbh | Method for producing a cross-slotted heading die |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080236353A1 (en) * | 2007-03-30 | 2008-10-02 | Staples Brands Group | Hole punch |
US7610838B2 (en) | 2007-03-30 | 2009-11-03 | Staples The Office Superstore, Llc | Hole punch |
USD658716S1 (en) | 2011-05-25 | 2012-05-01 | Staples The Office Superstore, Llc | Hole punch |
USD669936S1 (en) | 2011-05-25 | 2012-10-30 | Staples The Office Superstore, Llc | Hole punch |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |