GB2207855A - Cleaning press tools - Google Patents
Cleaning press tools Download PDFInfo
- Publication number
- GB2207855A GB2207855A GB08718829A GB8718829A GB2207855A GB 2207855 A GB2207855 A GB 2207855A GB 08718829 A GB08718829 A GB 08718829A GB 8718829 A GB8718829 A GB 8718829A GB 2207855 A GB2207855 A GB 2207855A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- press tool
- cleaning means
- press
- foam
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0028—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by adhesive surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
A press tool comprising dies 11, 13 is cleaned by inserting a deformable material between the dies, pressing the dies together so that any contaminant material on or in the dies is taken up by the material which is deformed, and removing the deformed material carrying the contaminants from the press. The deformable material may comprise a sheet steel blank 16 having a foam sheet or coating 17 attached or applied to it. The lower surface 18 of the foam sheet may have adhesive applied thereto. The foam may be bonded to plastics sheet, instead of a steel blank, or it may be used without a backing, or a fibrous material may be used instead of the foam. <IMAGE>
Description
A method of cleaning a press tool and
a cleaning means for use in such a method.
This invention relates to cleaning press tools and in particular to an apparatus for cleaning such tools without significantly interupting production and a method of using said apparatus.
With the increasing use of coated materials such as zinc coated steel for the production of car body panels a problem has arisen in that contamination of the tooling caused by atmospheric debris and particles of the coating material becoming attached to the tooling results in damage to the panels or tooling.
To reduce the amount of damage produced it is currently necessary to clean the tooling every 5,000 to 10,000 panels and this takes approximately one hour during which period the tooling is standing idle.
It is an object of this invention to provide an apparatus for cleaning such tooling in a more time and cost effective manner.
According to a first aspect of the invention there is provided a method of cleaning a press tool while fitted to a press including the steps of, introducing a press tool cleaning means between the upper and lower dies of the press tool, operating the press to bring the two dies together in a normal manner thereby bringing the adherent surface of the deformable material into contact with one of said upper or lower dies, operating the press to separate the two dies in the normal manner and removing the press tool cleaning means from between the dies.
According to a second aspect of the invention there is provided Press Tool cleaning means comprising a sheet of deformable material having an open matrix structures, at least one surface of the sheet of deformable material and the adjacent cavities having an adherent property.
The adherent property may be provided by applying a pressure sensitive adhesive thereto.
Alternatively, the adherent property may be provided by the use of a polymeric material having a permanently tacky surface for the deformable material.
The sheet of deformable material may be a sheet of foam material.
The foam material may be applied to a sheet of rigid but deformable material.
The rigid but deformable material may be a sheet metal blank.
Alternatively, the rigid but deformable material may be a sheet of a plastics material.
The foam may be applied by adhesively bonding a sheet of foam material to the surface of the sheet of rigid but deformable material.
Alternatively, the foam may be applied by applying a liquid solution containing a foaming agent onto the surface of the sheet of rigid but deformable material preferably by spraying.
As an alternative to foam the sheet of deformable material may be a sheet of fibrous material.
Preferably, the fibres are of an absorbant material.
The invention will now be described by way of example with reference to the accompanying drawing of which:
Fig 1 is a cross-section through a press tool showing a press tool cleaning means - according to the first aspect of the invention in a position ready for use;
Fig 2 shows a cross-section through the press tool of
Fig 1 with the tool cleaning means according to the first aspect of the invention in the position it adopts during cleaning or the press tool.
With reference to Figs 1 and 2 there is shown an upper die 11 having a cavity 12 held in a press (not shown), a lower die or punch 13 , a blank holder 14 and a press tool cleaning means 15 in the form of a sheet steel blank 16 having a sheet of foam 17 attached to it.
The sheet of foam 17 is made from an open cell foamed material the cavities and the lower surface 18 of which has an adhesive applied thereto and is attached to the sheet steel blank 16 by a bonding process.
Operation of the tool cleaning means is as follows, initially the upper and lower dies 11 and 13 are parted as shown in Fig 1 with the blank holder 14 substantially level with the top of the lower die 13.
The tool cleaning means 15 is then fed in between the upper and lower dies 11 and 13 either manually or by means of the usual sheet steel transfer equipment until it is in the position as shown in Fig 1.
The press is then operated in the normal manner with the upper die 11 being moved downwardly into contact with the sheet steel blank 16.The sheet steel blank 16 is then trapped between the upper die 11 and the blank holder 14 which is urged upwardly by a number of springs (not shown).
As the upper die 11 continues to move downwardly the blank holder 14 is moved with it thereby drawing the sheet steel blank 16 and attached foam 17 into the cavity 12 of the upper die 11, until the position as shown in Fig 2 is reached.
As the sheet steel blank 16 is drawn into the cavity 12 the lower surface 18 of the foam 17 is compressed and is dragged across the face of the lower die 13 causing any debris attached thereto to become detached from the face of the lower die 13 and attached to the adherent surface of the foam 17.
The dies 11 and 13 are then separated in the normal manner, separation of the upper and lower dies 11 and 13 allowing the foam 17 to return to its original thickness and in so doing absorbs any oil or other liquids present on the surface of the lower die 13.
When the upper and lower dies 11 and 13 have returned to the open position the sheet steel blank 16 and attached foam 17 are removed from between the upper and lower dies 11 and 13 and the press is ready for the next sheet steel blank 16 to be inserted.
If the upper die also requires cleaning the procedure as detailed above is followed with the exception that the adherent lower surface 18 of the foam 17 is placed between the dies 11 and 13 facing upwards towards the upper die 11.
Although this invention has been described with respect to a specific single action drawing press tool it is not limited to such a press tool and could be used to clean a double action press tool or any other similar forming tools.
Similarly, the adherent property need not be provided by the use of an adhesive applied to the foam by spraying but could be provided by the use of a polymeric foam material having a permanently tacky surface or the use of a material having sufficient surface softness that contact with debris will result in the debris becoming embedded in the surface.
The foam need not be pre-formed and bonded to the sheet steel it could be applied by spraying a liquid polymer onto the surface of the sheet steel containing a foaming agent so that the foam is formed in situ.
The foam need not be bonded to a sheet steel blank it could be bonded to a sheet of plastics material or it could be used without being attached to a backing or supporting material at all.
This invention is similarly not limited to the use of foam a fibrous material could be used and in this case it would be advantageous for the material to be of an absorbant nature.
Claims (16)
1. - A method of cleaning a press tool while fitted to a
press including the steps of, introducing a press tool
cleaning means between the upper and lower dies of the
press tool, operating the press to bring the two dies
together in a normal manner thereby bringing the
adherent surface of the deformable material into
contact with one of said upper or lower dies,
operating the press to separate the two dies in the
normal manner and removing the press tool cleaning
means from between the dies.
2. Press Tool cleaning means for use in a method of
cleaning a press tool as claimed in claim 1 comprising
a sheet of deformable material having an open matrix
structure , at least one surface of the sheet of
resilient material and the adjacent cavities having an
adherent property.
3. Press Tool cleaning means as claimed in claim 2 in
which the adherent property is provided by applying a
pressure sensitive adhesive thereto.
4. Press tool cleaning means as claimed in claim 2 in
which the adherent property is provided by the use of
a polymeric material having a permanently tacky
surface for the deformable material.
5. Press Tool cleaning means as claimed in any of claims
2 to 4 in which said sheet of deformable material is a
sheet of foam material.
6. Press Tool cleaning means as claimed in claim 5 in
which the foam material is applied to a sheet of rigid
but deformable material.
7. Press Tool cleaning means as claimed in claim 6 in
which the rigid but deformable material is a sheet
metal blank.
8. Press Tool cleaning means as claimed in claim 6 in
which the rigid but deformable material is a sheet of
a plastics material.
9. Press tool cleaning means as claimed in any of claims
6 to 8 in which the foam is applied by adhesively
bonding a sheet of foam material to the surface of the
sheet of rigid but deformable material.
10. Press tool cleaning means as claimed in any of claims
6 to 8 in which the foam is applied by applying a
liquid solution containing a foaming agent onto the
surface of the sheet of rigid but deformable material.
11. Press tool cleaning means as claimed in claim 10 in
which the liquid solution containing a foaming agent
is applied onto the surface of the sheet of rigid but
deformable material by spraying.
12. Press tool cleaning means as claimed in any of claims
5 to 11 in which the foam is between 3 and 15 mm in
thickness.
13. Press Tool cleaning means as claimed in claim 2 in
which the sheet of deformable material is a sheet of
fibrous material.
14. Press Tool cleaning means as claimed in claim 13 in
which the fibrous material is of an absorbant material.
15. A Tool cleaning means substantially as described
herein with reference to the accompanying drawing.
16. A method of cleaning a press tool while fitted to a
press substantially as described herein with reference
to the accompanying drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8718829A GB2207855B (en) | 1987-08-08 | 1987-08-08 | A method of cleaning a press tool and a cleaning means for use in such a method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8718829A GB2207855B (en) | 1987-08-08 | 1987-08-08 | A method of cleaning a press tool and a cleaning means for use in such a method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8718829D0 GB8718829D0 (en) | 1987-09-16 |
| GB2207855A true GB2207855A (en) | 1989-02-15 |
| GB2207855B GB2207855B (en) | 1991-09-18 |
Family
ID=10622020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8718829A Expired - Lifetime GB2207855B (en) | 1987-08-08 | 1987-08-08 | A method of cleaning a press tool and a cleaning means for use in such a method |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2207855B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10309124A1 (en) * | 2003-02-28 | 2004-10-07 | E. Zoller GmbH & Co. KG Einstell- und Messgeräte | Cleaning arrangement for cleaning tool, especially tool cutter, on adjustment and measurement device, automation unit for at least partial automaton of cleaning process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1154507A (en) * | 1967-04-21 | 1969-06-11 | Tackmer Corp | A water-washable tacky elastomer. |
| GB1545989A (en) * | 1976-04-07 | 1979-05-16 | Oxford Chem Inc | Self-adhering material |
| GB1548678A (en) * | 1975-07-28 | 1979-07-18 | Squibb & Sons Inc | Surgical bandage |
| GB2022510A (en) * | 1978-05-04 | 1979-12-19 | Honda Motor Co Ltd | Manufacturing layered articles |
| GB2045684A (en) * | 1979-04-05 | 1980-11-05 | Wako Chem | Method of manufacturing boards of soft cellular plastics |
| EP0084220A1 (en) * | 1982-01-15 | 1983-07-27 | Minnesota Mining And Manufacturing Company | Cellular pressure-sensitive adhesive product |
| GB2189983A (en) * | 1986-05-02 | 1987-11-11 | Caroline Murphy | Article for removing fluff from clothing and furniture |
-
1987
- 1987-08-08 GB GB8718829A patent/GB2207855B/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1154507A (en) * | 1967-04-21 | 1969-06-11 | Tackmer Corp | A water-washable tacky elastomer. |
| GB1548678A (en) * | 1975-07-28 | 1979-07-18 | Squibb & Sons Inc | Surgical bandage |
| GB1545989A (en) * | 1976-04-07 | 1979-05-16 | Oxford Chem Inc | Self-adhering material |
| GB2022510A (en) * | 1978-05-04 | 1979-12-19 | Honda Motor Co Ltd | Manufacturing layered articles |
| GB2045684A (en) * | 1979-04-05 | 1980-11-05 | Wako Chem | Method of manufacturing boards of soft cellular plastics |
| EP0084220A1 (en) * | 1982-01-15 | 1983-07-27 | Minnesota Mining And Manufacturing Company | Cellular pressure-sensitive adhesive product |
| GB2189983A (en) * | 1986-05-02 | 1987-11-11 | Caroline Murphy | Article for removing fluff from clothing and furniture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10309124A1 (en) * | 2003-02-28 | 2004-10-07 | E. Zoller GmbH & Co. KG Einstell- und Messgeräte | Cleaning arrangement for cleaning tool, especially tool cutter, on adjustment and measurement device, automation unit for at least partial automaton of cleaning process |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2207855B (en) | 1991-09-18 |
| GB8718829D0 (en) | 1987-09-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) |
Effective date: 19990225 |
|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20010808 |