GB2200069A - A machine for producing a strip of metal-alloy or plastics grating for use in the manufacture of accumulator plates - Google Patents
A machine for producing a strip of metal-alloy or plastics grating for use in the manufacture of accumulator plates Download PDFInfo
- Publication number
- GB2200069A GB2200069A GB08727740A GB8727740A GB2200069A GB 2200069 A GB2200069 A GB 2200069A GB 08727740 A GB08727740 A GB 08727740A GB 8727740 A GB8727740 A GB 8727740A GB 2200069 A GB2200069 A GB 2200069A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- punch
- machine
- advance
- alloy
- 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
- 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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
- B21D31/043—Making use of slitting discs or punch cutters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
- B26D1/085—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type for thin material, e.g. for sheets, strips or the like
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
- H01M4/74—Meshes or woven material; Expanded metal
- H01M4/745—Expanded metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
- B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Punching Or Piercing (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Description
1 6? 1 A MACHINE FOR PRODUCING A STRIP OF METAL---ALLOY OR PLASTICS
GRATING FOR- USE IN THE MANUFACTURE OF ACCUMULATOR PLATES 2200069 The present invention relates in general to the production of strips of metal-alloy (lead, copper, titanium) or plastics grating for use in the manufacture of accumulator plates.
More particularly, the invention relates to a machine for producing such grating strips, of the type comprising a multiple-step expansion die through which a continuous strip is fed intermittently and which includes a rectilinear matrix and punch tapered in the direction of advance of the strip and movable relative to each other, the punch carrying two lateral rows of toothed cutting blades arranged to cooperate with two respective lateral rows of counterblades with which the matrix is provided,-and motorised means for moving the punch towards the matrix in an operative stroke synchronised with the advance of the strip.
In known machines of the type defined above, currently used in the industrial sector by the Applicant, each cutting blade. is shaped like a single tooth. The arrangement and shape of the tooth is such that, while the lead sheet is being cut, it assumes the profile of the tooth and expands- so as to f orm a grating with a substantially rhomboidal mesh. Once the cut has been inade, the toothed blades carried by the punch are raised and the rolled strip is advanced by a distance corresponding to the length of the longer diagonal of the rhomboidal mesh added to the length of the junction node between this mesh and that formed previously.
Clearly-P the rate of production of the machine is obtained by the multiplication of the pitch of the mesh by the number of times the blades carry out a cutting operation. In the machines currently in use, the 1 2 maximum limit for operating strokes or cuts of the punch is 500 per minute and, With a pitch normally of the order of 23mm, the maximum rate of production is limited to approximately 11.5 metres per minute.
This limited rate prevents a direct connection between the output of the machine and the subsequent line for spreading the active material on the grating strip, whose production rate is normally double (25 metres per minute).
moreover, in order to improve the performance of the accumulato2s,. the current tendency is to produce grating strips with meshes of reduced dimensions and, in particular, with a pitch in accordance with the major diagonal equal to approximately half the current pitch. With the machines currently in use, the rate of productIon in this case would be halved for an equal number of cuts per minute.
The object of the present invention is to produce a machine of the type defined above, which is adapted to operate at a production rate greater than, and almost double, the current rate for the same dimensions of the mesh of the grating produced from the strip, so as to allow a direct connection between the expansion die and the line for spreading the active material on the grating strip, or to produce grating strips with meshes having a pitch in accordance with the longer diagonal equal to at least half that of the current meshes, while maintaining the same rate conventional machines.
of production as According to the invention, this object is achieved by virtue of the fact that each cutting blade is provided f 1 pr 1 3 with at least two contiguous teeth which are side by side in the direction of advance of the strip, so as to make at least two cuts in the strip with each operating stroke of the punch.
Each blade may have a width in the direction of advance of the strip equal to that of the blades used in conventional machines, and in this case a reduced mesh is obtained (for example, with half the pitch in accordance with the longer diagonal) for the same rate of production at conventional machines. Alternatively, each blade may have a width in the direction of advance of the strip equal to a multiple of that of the blades used in conventional machines, this multiple corresponding to the number of teeth of each blade; in this case. for the same dimensions of the mesh and the same number of cuts per minute of the punch. a rate of production is obtained which is a corresponding multiple of that of conventional machines.
According to the invention, the machine preferably comprises a pair of separate dies, arranged one as an extension of the other in the direction of advance of the strip.
The invention will now be described in detail with reference to the appended drawings, provided purely by way of non-limiting example, in which:
Figure 1 is a general perspective view of a machine for the production of a grating strip of lead alloy, according to the invention, Figure 2 is a simplified schematic perspective view of a Part of the machine, 4 Figure 3 is a simplified horizontal section taken on the line III-III of Figure 2, Figure 4 is a detailed perspective view of a part of Figure 2 on an enlarged scale, F gure 5 is a vertical section taken on the line V-V of Figure 4, Figure 6 is an exploded view of Figure 4, Figure 7 is a perspective view of a cutting blade of conventional type, Figures 8 to 10 are three views similar to Figure 7, showing cutting blades used in the machine according to the invention, and Figures 11 and 12 show the method of working of the machine using the blades of Figure 8, in perspective and in elevation respectively.
Figure- 1 shows generally a machine according to the invention for the production of a grating strip of lead alloy to be used for the manufacture of plates for lead accumulators.
The machine comprises essentially a support housing 1 carrying on top a multiple-step expansion die unit 2 through which is fed a continuous rolled strip N of, for example, lead alloy, which unwinds from a reel B supported for rotation about a horizontal axis by a support 3.
The expansion die unit 2 is contained within a tk (11 t; protective cowl-like cover 4 proviaed at its top with a suction duct 5 for the removal of-the heat generated by the process.
The cover 4 contains a motorised operating unit, generally indicated 6, including an electric motor, not illustrated, and has a frontal outIetopening 7 through which the strip N emerges from the unit 2 with a grating configuration obtained in the manner specified below.
The strip N is unwound from the reel B-and fed through the unit 2, by means of a pair of horizontal motorised pulling rollers, not illustrated, with an intermittent advancing movement of steps of predetermined magnitude.
The grating strip output by the machine it sent -directly to- a cutting unit for the formation of accumulator grids and to a unit for spreading the active material onto the grids. These units are not illustrated, as they are of conventional type and known to experts in the art.
The unit 2 is illustrated in a simplified form in Figures 2 and 3, and includes a pair of separate dies 8 arranged one as an extension of the other in the direction of advance of the strip, indicated by the arrow F in Figure 3. Each of these dies 8 has an identical general confQrmation, illustrated in greater detail in Figures 4 to 6. Briefly, each die 8 comprises a base 9 to which is fixed a support 10 carrying a matrix 11 consisting of an elongate bar which is tapered in the direction of movement F of the strip N and carries on its sides two series of fixed counterblades 12 arranged to copperate with two 6 corresponding series of cutting blades 13 carried by a punch 14. The punch 14 actually consists of an elongate bar which is tapered in the direction of advance F like the matrix 11 and is supported above this by a plate 15 parallel to the base 9 and movable vertically relative thereto. In ef fect, the plate 15 issupported by the base 9 by means of a series of pillars 16 which are vertically slidable through- the base 9 and held in the raised position by means of a series of helical compression springs 17 wound around respective uprights 18 along which the plate 15 is vertically slidable.
An elongate sheet-detachment bar 19 is interposed between the matrix 11 and the punch 14 and is supported by the base 9 by means of a pair of end supports 20.
Two reaction plates 21 are fitted to the upper face of the plate 15 and cooperate with respective cams 22 rotated by horizontal shafts 23 arranged transverse the direction of advance F of the strip N and operated by the motorised operating unit 2, through conventional systems, not illustrated but within the competence of a person skilled in the art.
As stated above, the two dies 8 of the unit 2 are identical in configuration; the only difference lies in differing widths of the matrices 11 and the punches 14, due to the fact that they taper progressively in the direction of movement F.
According to the invention, the cutting blades 13 carried by the punch 14 differ in shape from blades used conventionally in the machines currently in use. One of these conventional blades is illustrated in Z -11 7 6.
f 11 Figure 7, while Figures 8 to 10 show different configurations of the blades 13 used in the machine according to the invention.
The conventional blade, indicated L in Figure 7, comprises a rootpart R for attachment to the punch 14, and a single cutter in the shape of a tooth D; this tooth D enables the strip N to be cut by the operating strokes of the punch 14 during operation of the machine, causing the strip to assume the profile of the tooth itself and producing a "mesh" due to expansion of the strip in the region of the cut by plastic deformation. Once the cut has been made, the tooth D is raised and the strip N is advanced by a step (corresponding to the length of the lower diagonal of the mesh plus the length of the junction node with the preceding mesh), so that the strip N progressively assumes the grating configuration illustrated in Figures 1 and 3.
Unlike conventional blades L, the blades 13 used in the machine according to the invention are provided with two (Figure 8), three (Figure 9) or four (Figure 10) contiguous teeth 13a which project from the attachment part 13b and are side by side in the direction of advance P of the - strip N. In this way, for each operating stroke of the punch 14 operated by means of the cams 22, two, three, or four incisions are made in the strip N by each blade 13.
If the blades 13 have a width (that is, a dimension in the direction of advance F) corresponding to a multiple (equal to the number of teeth 13a). of that of conventional blades L, the machine according to, the invention enables correspondingly greater production 8 rates to be obtained than those obtainable from conventional machines with an equal number of operating strokes of the punch lf. In fact, the rate of production is doubled with the blades 13 having two teeth 13a, tripled with the blades 13 provided with three teeth' 13a, and quadrupled with blades 13 having four teeth 13a.
If, on the other hand, the width of the blades 13 in the direction of advance F of the strip N is kept equal to that of conventional blades, a grating strip with a mesh having correspondingly reduced dimensions is obtained with an equal rate of production. In f act, the pitch of the mesh (that is, the length of the longer diagonal added to the length of the node between each mesh and its preceding mesh) is halved if blades 13 provided with two teeth 13a are used, reduced to a third with blades 13 provided with three teeth 13a, and reduced to a quarter with blades 13 provided with four teeth 13a.
The expansion of the grating strip produced during operation of the machine in the first case, that is, with blades provided with two teeth 13a, is illustrated in Figures 11 and 12.
It should be noted that the expansion unit 2 could be made with a single die of a length corresponding to the sum of the two dies 8, instead of with two separate dies 8. However, the solution described with.reference to the example is considered preferable in that the use of a single die would involve the reciprocation of enormous masses. Furthermore, the double-die configuration enables the invention to be applied to existing conventional machines by modification of these 111 9 machines.
Naturally, the scope of the present invention extends to models achieving equal utility-by means of the same innovative concept.
1 -1 t 9. V
Claims (3)
1. A machine for the production of a strip of metal-alloy or plastics grating for use in the manufacture of accumulator plates, comprising a multiple-step expansion die through which a continuous strip of metal alloy or plastics is fed intermittently and which includes a rectilinear matrix and punch tapered in the direction of advance of the strip and movable relative to each other, the punch carrying two lateral rows of toothed cutting blades arranged to cooperate with two respective lateral rows of counterblades with which the matrix is provided, and motorised means for moving the punch towards the matrix with an operating stroke synchronised with the advance of the stript in which each cutting blade is provided with at least two contiguous teeth which are side by side in the direction of advance of the strip, so as to make at least two cuts in the strip with each oper-ating stroke of the punch.
2. A machine according to Claim 1, in which it includes a pair of separate dies arranged one as an extension of the other in the direction of advance of the strip.
3. A machine for the production of a strip of metal-alloy or plastics grating, substantially as herein described with reference to, and as shown in, the accompanying drawings.
Published 1988 at The Patent Office, State House, 68,71 High Holborn, London WC1R 4TP- Further COPIOS may be obtained from The Patent OMce.
Sales Branch, St Mary Crav. OrDington. Rent PAS %R7) printat, hv M"jt. jnjr tnhnjcjuas ltd. St Marv Crav.]Kent. Con. 1/87. A.I.A RrAneh_ St Marv Crav. OrDington. Rent PAS AM) Printed bV M"Itinit-Ir c -0
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT8654278U IT209004Z2 (en) | 1986-12-30 | 1986-12-30 | MACHINE FOR THE REALIZATION OF A GRID TAPE OF METAL ALLOY OR PLASTIC MATERIAL USED FOR THE MANUFACTURE OF PLATES FOR ACCUMULATORS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8727740D0 GB8727740D0 (en) | 1987-12-31 |
| GB2200069A true GB2200069A (en) | 1988-07-27 |
| GB2200069B GB2200069B (en) | 1990-09-05 |
Family
ID=11287130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8727740A Expired - Lifetime GB2200069B (en) | 1986-12-30 | 1987-11-26 | A machine for producing a strip of metal-alloy or plastics grating for use in the manufacture of accumulator plates |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS63174735A (en) |
| DE (1) | DE3741162A1 (en) |
| GB (1) | GB2200069B (en) |
| IT (1) | IT209004Z2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0899804A1 (en) * | 1997-08-28 | 1999-03-03 | Matsushita Electric Industrial Co., Ltd | Manufacturing method of expanded grid and its manufacturing apparatus |
| US6425181B2 (en) | 2000-05-23 | 2002-07-30 | Societa Industriale Accumulatori S.P.A. | Method and a machine for the production of accumulator plates |
| US8081412B2 (en) | 2007-01-25 | 2011-12-20 | Thomson Licensing | Frequency translation module protection circuit |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19716435C2 (en) * | 1997-04-18 | 2001-07-05 | Arnold Anneliese | Process for producing a grid-like, profiled product, installation for carrying out the process and product which can be produced by the process |
| WO2008091255A1 (en) | 2007-01-25 | 2008-07-31 | Thomson Licensing | Frequency translation module interface |
| ITMI20101689A1 (en) * | 2010-09-17 | 2012-03-18 | Industrie De Nora Spa | ANODE FOR CATHODIC PROTECTION AND METHOD FOR ITS ACHIEVEMENT |
| DE102020122801B3 (en) | 2020-09-01 | 2021-09-09 | Weko-Werkzeuge Kolks GmbH | Guillotine cutter unit for machine tools and machine tools equipped with them |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2699211A (en) * | 1949-06-27 | 1955-01-11 | Lubeck Carl Hilding Ossian | Perforating machine |
| US4111028A (en) * | 1977-08-04 | 1978-09-05 | Kupsky Frederick E | Method and apparatus for fabricating reticular sheet material |
-
1986
- 1986-12-30 IT IT8654278U patent/IT209004Z2/en active
-
1987
- 1987-11-26 GB GB8727740A patent/GB2200069B/en not_active Expired - Lifetime
- 1987-12-04 DE DE19873741162 patent/DE3741162A1/en not_active Ceased
- 1987-12-23 JP JP62326664A patent/JPS63174735A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0899804A1 (en) * | 1997-08-28 | 1999-03-03 | Matsushita Electric Industrial Co., Ltd | Manufacturing method of expanded grid and its manufacturing apparatus |
| US6243932B1 (en) | 1997-08-28 | 2001-06-12 | Matsushita Electric Industrial Co., Ltd. | Manufacturing method of expanded grid and its manufacturing apparatus |
| US6425181B2 (en) | 2000-05-23 | 2002-07-30 | Societa Industriale Accumulatori S.P.A. | Method and a machine for the production of accumulator plates |
| US8081412B2 (en) | 2007-01-25 | 2011-12-20 | Thomson Licensing | Frequency translation module protection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| IT8654278V0 (en) | 1986-12-30 |
| IT209004Z2 (en) | 1988-09-02 |
| GB2200069B (en) | 1990-09-05 |
| GB8727740D0 (en) | 1987-12-31 |
| DE3741162A1 (en) | 1988-07-14 |
| JPS63174735A (en) | 1988-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3589221A (en) | Method for cutting scrap metal having staggered rows of substantially circular openings | |
| AR206656A1 (en) | METHOD FOR PRODUCING AN ALUMINUM ALLOY SHEET PRODUCT FROM AL-FE ALLOY | |
| GB1309465A (en) | Pre-stretched expanded metal and method of making it | |
| GB2200069A (en) | A machine for producing a strip of metal-alloy or plastics grating for use in the manufacture of accumulator plates | |
| US3308597A (en) | Grid-like article and apparatus for and method of making same | |
| US1927791A (en) | Method of perforating sheet metal | |
| CN109676026A (en) | A kind of Progressive Die for Assembled Panel continuous forming process and molding machine | |
| US3813743A (en) | Method of expanding metal | |
| US3570086A (en) | Methods and machines for manufacture of expanded metal | |
| CN216027467U (en) | Material-saving plate cutting device and die | |
| CN212242141U (en) | Device for pasting film on steel wire net | |
| US4114218A (en) | Method of forming flat four-sided fastener parts having an opening therein | |
| US2000208A (en) | Sheet metal punch machine | |
| US3268974A (en) | Apparatus for producing expanded metal | |
| US1424005A (en) | Manufacture of blanks of sheet metal | |
| US3760470A (en) | Apparatus and method for producing expanded metal | |
| EP1157763B1 (en) | A method and a machine for the production of accumulator plates | |
| GB1250784A (en) | ||
| RU2078637C1 (en) | Die for manufacturing screen from strip | |
| US3585697A (en) | Process for forming apertures in ductile strips | |
| SU537766A1 (en) | Bar Cutting Stamp | |
| US3268973A (en) | Apparatus for producing expanded metal | |
| US1843438A (en) | Sheet metal punch machine | |
| CN210232191U (en) | Automatic cutting and forming thread rolling machine | |
| DE102004006401B3 (en) | Two-part tool for the conversion of sheet-metal to metal mesh has array of upper teeth and lower teeth |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20001126 |