CN101534975A - Punch stripper - Google Patents
Punch stripper Download PDFInfo
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- CN101534975A CN101534975A CNA2007800411416A CN200780041141A CN101534975A CN 101534975 A CN101534975 A CN 101534975A CN A2007800411416 A CNA2007800411416 A CN A2007800411416A CN 200780041141 A CN200780041141 A CN 200780041141A CN 101534975 A CN101534975 A CN 101534975A
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- Prior art keywords
- punch
- punch stripper
- stripper
- balancing gate
- gate pit
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- 238000000465 moulding Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 2
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- 238000004080 punching Methods 0.000 description 20
- 229920002635 polyurethane Polymers 0.000 description 18
- 239000004814 polyurethane Substances 0.000 description 18
- 239000002184 metal Substances 0.000 description 13
- 238000007789 sealing Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
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Images
Classifications
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- 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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
- B21D45/006—Stripping-off devices
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- 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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/06—Stripping-off devices
- B21D45/08—Stripping-off devices interrelated with motion of tool
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
A punch stripper is adapted to be fastened to a punch retainer of a press tool, and to retain a work piece as the piece is being machined by a punch. The punch stripper includes a punch stripper piston and a pressure chamber adapted to spring-load the punch stripper piston. The pressure chamber is at least partially defined by a gap between an inner sleeve and an outer sleeve. The punch stripper piston has a portion that is axially displaceable in the gap.
Description
The cross reference of related application
The present invention advocates in the sequence number of on November 6th, 2006 application to be 60/856,837 U.S. Provisional Application No., and it is included in this by reference.The present invention advocates that also in the sequence number of application on November 6th, 2006 be the priority of the Swedish patent application of 0602363-4, and it is included in this by reference.
Technical field
The present invention relates to a kind of punch stripper (punch stripper) and comprise the punching tool of punch stripper.Especially, the present invention relates to adapt to the punch stripper that is fastened on the punch retainer (punch retainer), this punch retainer can be installed to the removable upper tool part of forcing press.
Background technology
In panel beating shaping industry, use punching tool on sheet metal, to punch.Punching tool mainly comprises fixed head, puncher and ingot stripper (stripper).Punching tool is operated and directly is installed to usually in the press tool as closed cell, forms sheet metal in press tool, operates the shuttle that is used in the different directions punching but punching tool also can be installed in press tool.
The purpose of puncher is to punch on sheet metal.The puncher that uses has different sizes and surface configuration.Often use because puncher becomes, they have become standardized object.For the punch retainer that uses on puncher also is identical.Puncher is installed on the punch retainer and by mechanical lock and is fixed on the position of oneself.
Itself also is installed in fixed head in the press tool.In punch operation, the punching tool that is arranged in upper tool caters to static punch die moving down, and this static punch die is positioned at low tools section.In moving down, ingot stripper caters to sheet metal and is in contact with it.Puncher continues to move and to get hole by sheet metal to sheet metal.The main purpose of ingot stripper is in punch operation, both also sheet metal was fixed on the position of oneself in moving returning in moving down.Another purpose of ingot stripper is to support puncher in punch operation.Need big knockout press that ingot stripper can be retracted puncher under the situation of not damaging the hole of getting after the punch operation.
Can generate knockout press by using elastic part, this elastic part is the polyurethane element of mechanical spring or elastically deformable for example, the biased ingot stripper part that is applied to of this knockout press.The size of power is determined by the size and the spring constant of the elastic part that adopts.If do not have ingot stripper or use little knockout press to carry out punch operation, return move in sheet metal around the hole of getting will have the danger of distortion immediately because sheet metal since frictional force will follow puncher and move.
In panel beating shaping industry, requiring is constantly increasing, and this has brought the increase of productivity ratio.The result that this productivity ratio increases has more high pressure machine speed rate and in the forcing press process of forcing press faster of shorter standby time between the cycle, thereby keeps high-caliber efficient.In addition, longer production run (is uncommon up to 2,000,000) has caused the operating time of press tool to increase, and this just represents for current press tool of using and press types stricter requirement is arranged in panel beating shaping industry.Compared with the forcing press that uses in the industry before 20 years, existing forcing press is designed to higher speed.The forcing press process also causes forcing press, press tool and the bigger wearing and tearing of press tool parts faster, and this expression must need by supervision, maintenance.
Thereby strict more productivity ratio and the minimum maintenance that increases that satisfy that require also to become that the result of the productivity ratio that increases is a drilling tool.
The recent tendency of automobile industry is that the extension of high duty metal sheet is used.Optimize these parts by function, can reduce weight and the influence of environment about each separate part of automobile.Considering will be in such part punching, and this trend in the automobile industry also has influence on the standard of drilling tool.
In the existing market, two types punch stripper is arranged.First kind has built-in mechanical spring and second kind and has and adapt to the polyurethane element that generates knockout press.Two kinds all have problem and restriction.
Punch stripper with mechanical spring is operated by mechanical spring, the overall diameter of the interior diameter of this mechanical spring and punching main body with one heart and be installed between stripper part and the end, thereby on the unit, exert pressure.Stripper part has two overall diameters, and one at drilling point, and another is on spring terminal.Two surfaces all guide stripper part on the driving stroke of stripper part.Stripper part has the plane, is the surface of processing, is used for preventing the stripper part rotation.Punch stripper is designed unit as a whole, and this integral unit can be replaced when maintenance.If expect greater or lesser knockout press, just replace spring.Because changes in demand has a large amount of different springs to select.In addition, the user must know that punch operation needs great power.Under uncertain situation, obtaining to need several spring variants and setting before the correct power.Further restriction is the useful life of mechanical spring, and for satisfying the demand that increases, this useful life becomes and lacked some slightly in panel beating shaping industry.
US 6182545 B1 have disclosed the different institutions that puncher is installed in punch retainer, wherein this punch retainer comprises the fixed head main body, provides the locking mechanism that is used for closing with respect to punch retainer puncher in this fixed head main body.Locking mechanism can comprise the ball of the spring load that engages the groove in the puncher, perhaps the wedge mechanism that is provided with by screw.The punch retainer of US 6182545 B1 adapts to respect to higher removable tool part and fixes.
The type of the punch retainer shown in US 6182545 B1 is common on market.EP 1547703A1 and US 4993295 show the example of punch stripper.The punch stripper with mechanical spring that the punch retainer type that is used for disclosing with US 6182545 B1 is used together is by for example MoellerManufacturing Company, Plymouth, and MI, USA sells, and sees
Www.moellerpunch.com
Punch stripper with polyurethane element is operated in a similar manner.The variant that two kinds of punch strippers are arranged.A kind of mode the same with the punch stripper with mechanical spring operated, but their use is not mechanical spring but polyurethane element.Another kind is operated by the polyurethane that forms whole punch stripper.These two kinds of designs may look simply, but polyurethane element must be adapted to the required knockout press of carry out desired function.The user just must know the required length that will use and the size/initial load of power that expectation is provided in the design phase.According to the difference of knockout press, there is multiple size to select.The useful life of polyurethane element is shorter than mechanical spring usually.Therefore, useful life is the very big restriction of polyurethane.Another restriction is polyurethane is restrained oneself repeated stress in the size that keeps oneself a ability, because material is subject to the influence of compressive deformation or creep.Therefore, polyurethane element can not provide the productivity ratio of increase without difficulty.In addition, polyurethane element needs more space, because it is expanded in radial direction when being compressed.
Another problem that has been found that when polyurethane element is used as ingot stripper and directly contacts with sheet metal is that the particle from polyurethane element can stick on the sheet.Particle can produce adverse effect to the quality of the subsequent applications of lacquer, because reduced black adhesive capacity in those positions that polyurethane has contacted with sheet.
Punch stripper with polyurethane element has been shown among the EP1384535A1.The punch stripper with polyurethane element that the punch retainer type that is used for disclosing with US6182545 is used is together sold by for example Lane Punch Corporation.
US 4292869 has disclosed the punch stripper that has wherein used air spring rather than mechanical spring or polyurethane element.Yet the punch stripper that discloses among the US 4292869 is arranged in C shape portion, and wherein first handle (shank) forms upper tool part and comprises puncher and punch stripper, and wherein second petioliform becomes low tool part and comprises punch die.Base portion in C shape portion has been arranged the balancing gate pit, and the gap of punch stripper piston between internal axle sleeve and outer shaft is removable.Space between internal axle sleeve and the outer shaft communicates by passage and balancing gate pit, has arranged the immersion oil sponge of the lubricant that is used to be provided for punch stripper piston in this passage.
Yet the punch stripper volume that discloses among the US 4292869 is very big, therefore is difficult to use in current standardized press tool.
US 4316399 has disclosed a kind of punch stripper, and wherein punch stripper piston is with respect to puncher and outer shaft sealing.The chamber that punch stripper piston can move therein links to each other with external pressure source.In this punch stripper, fixed head, puncher and ingot stripper are formed a unit.
Because with respect to the puncher sealing, the consequence of this design is that the danger of gas leakage increases.Under the situation of maintenance and puncher replacement, before removing puncher, must discharge gas.
Thereby the punch stripper volume shown in the US 4316399 is very big, and is difficult to use in current standardized press tool.
EP 0622135 B1 has disclosed a kind of drilling tool with punch stripper, and this punch stripper comprises air spring, and this air spring is used for being installed in capstan head punching forcing press (turret punching press).
EP 0646427 B1 has disclosed the further exploitation of the punch stripper shown in EP 0622135 B1.
In the mode shown in EP 0611188 B1, the punch stripper shown in EP 0622135 B1 and EP 0646427 B1 is adapted in the axis hole that is installed in capstan head punching forcing press.In this installation, by lifting spring, punch stripper itself is flexibly hung with respect to upper tool part.The purpose of lifting spring is that the whole assembly that will comprise puncher and punch stripper promotes from workpiece.The ejector spring that separates provides the required power of workpiece demoulding from puncher.The air chamber that takes place among EP 0622135 B1 and EP 0646426 B1 only has demoulding functions.Further, the punch stripper shown in EP 0622135 B1 and EP 0646427 B1 has the punching head, and this punching head is only activated by the upper tool part of forcing press in actual punch operation.
Punch stripper shown in EP 0622135 B1 and EP 0646426 B1 can not be used for the punching press types shown in the US6182545 B1.
Need compact punch stripper, this punch stripper can or replenish as the replacement of current available punch stripper on the market.
Summary of the invention
The present invention relates to a kind of punch stripper and the punching workpiece that comprises punch stripper of improvement.Especially, the present invention relates to adapt to the punch stripper that is fixed on the punch retainer, this punch retainer can be installed to the removable upper tool part of forcing press.
Unrestricted aspect according to the present invention provides a kind of punch stripper that adapts on the punch retainer that is fastened in the press tool.Punch retainer comprises punch stripper piston and adapts to the balancing gate pit of load on spring punch stripper piston.The balancing gate pit is limited by the gap between internal axle sleeve and the outer shaft.Punch stripper piston has axial replaceable part in the gap.Basically, whole balancing gate pit is positioned at outer shaft.As defined herein, " whole basically balancing gate pit " refers to the space that forms the balancing gate pit, gets rid of any pipeline that is used for inflation/deflation or is used for interconnecting with other similar punch stripper.By the working pressure chamber, can access bigger starting force.Can use bigger power to improve punching performance in the high duty metal sheet; Yet this not necessarily.By adopting the air spring technology and between internal axle sleeve and outer shaft assembly, forming the balancing gate pit, can access the assembly compacter than existing assembly; Yet this not necessarily.Compacter assembly has advantage, because almost there is not free space usually in existing press tool.By the pressure in the conditioning chamber, can easily change required knockout press, and can access the variant of the minimal amount of punch stripper; Yet this not necessarily.In addition, use the air spring technology can improve punching and handle reliability, because it allows knockout press that provides bigger and the better mode that guarantees fully and have the punch operation that desired qualities ground is carried out; Yet this not necessarily.In addition, can avoid a large amount of generations of the power that causes by mechanical spring; Yet this not necessarily.The hole and the profile that use air spring technology of the present invention to allow reliability identical and quality to punch and with existing punch stripper with straight profile, because can restrain oneself the edge load (side load) that generates up to about 15-20 ° angle by and under given conditions, and has the identical useful life of punch stripper with the straight hole that is used to punch up to 10 ° based on the punch stripper of air spring; Then, this is not necessarily.By making punch stripper piston in the balancing gate pit, move, can access the absorption of the improvement of the shaking force that when puncher passes workpiece, generates; Yet this not necessarily.
According to another and/or the unrestricted aspect of replacing of the present invention, the balancing gate pit can have leader and chamber part, replaceable part can move in leader, and the chamber part is axially separated with leader and had a transverse cross-sectional area bigger than leader; Yet this not necessarily.By using this configuration, can access required balancing gate pit's volume, and allow the outside dimension of punch stripper is reduced to minimum; Yet this not necessarily.
According to another and/or the unrestricted aspect of replacing of the present invention, outer shaft can have first and second portion, first has the first substantially invariable interior cross section, this first substantially invariable interior cross section forms the border surface of leader, second portion has cross section in second, and this second interior cross section is greater than the described first interior cross section and form portion boundary surface, chamber; Yet this not necessarily.Thereby the outer shaft with annular cross section can have the interior diameter of constant outer diameter and variation, that is, and and the wall thickness of variation; Yet this not necessarily.Alternatively or as a supplement, outer shaft also can have the overall diameter of variation; Yet this not necessarily.For example, outer shaft can have substantially invariable wall thickness, but the chamber part has bigger interior transverse cross-sectional area and leader has littler transverse cross-sectional area; Yet this not necessarily.
According to another and/or the unrestricted aspect of replacing of the present invention, internal axle sleeve can have first and second portion, first has the first substantially invariable external cross section, this first substantially invariable external cross section forms the border surface of leader, second portion has second external cross section, and this second external cross section is less than described first external cross section and form portion boundary surface, chamber; Yet this not necessarily.Thereby the internal axle sleeve with annular cross section can have the interior diameter of constant inner diameter and variation; Yet this not necessarily.Alternatively or as a supplement, internal axle sleeve also can have the interior diameter of variation; Yet this not necessarily.For example, internal axle sleeve can have substantially invariable wall thickness, but first has bigger outer cross-sectional area and second portion has littler outer cross-sectional area; Yet this not necessarily.Internal axle sleeve can be fixed with respect to puncher; Yet this not necessarily.Outer shaft can be fixed with respect to puncher; Yet this not necessarily.The replaceable part in the gap of punch stripper piston can be with respect to internal axle sleeve and/or outer shaft sealing; Yet this not necessarily.
According to another and/or the unrestricted aspect of replacing of the present invention, punch stripper can comprise the pressure-indication means of the pressure in the indicated pressure chamber; Yet this not necessarily.This makes it possible to be avoided to lack or obtains pressure in the incorrect punch stripper; Yet this not necessarily.In addition, can determine whether to remove punch stripper safely; Yet this not necessarily.Whether pressure-indication means can be adapted for pressure in the indicated pressure chamber and surpass and/or be lower than predetermined value; Yet this not necessarily.Pressure-indication means can with the punch stripper monolithic molding, for example with outer shaft and/or and the base portion monolithic molding; Yet this not necessarily.Pressure-indication means can comprise load on spring portion, load on spring portion from punch stripper outside as seen; Yet this not necessarily.
According to another and/or the unrestricted aspect of replacing of the present invention, provide the press tool that comprises the puncher that is fastened to punch retainer and be fastened to the punch stripper of punch retainer; Yet this not necessarily.In press tool, punch retainer can be fastened to the stroke part of press tool; Yet this not necessarily.As defined herein, " stroke part " refers to the portion that causes pressing work, i.e. the impeller of the piston of eccentric press or hydraulic press or screw forcing press.
According to another and/or the unrestricted aspect of replacing of the present invention, provide the press tool that comprises at least two punch strippers; Yet this not necessarily.In a unrestricted embodiment, each balancing gate pit of these at least two punch strippers can fluidly communicate mutually, thereby keeps identical pressure substantially in each balancing gate pit of these at least two punch strippers; Yet this not necessarily.The advantage of this layout is that the operator only need need not remove punch stripper a position inflation from fixed head; Yet this not necessarily.In addition, when needs are regulated knockout press, can regulate air pressure in all punch strippers simultaneously with simple and flexible way; Yet this not necessarily.
According to another and/or the unrestricted aspect of replacing of the present invention, provide the punch stripper that adapts on the punch retainer that is fastened in the press tool; Yet this not necessarily.Punch stripper comprises punch stripper piston and adapts to the balancing gate pit that applies load on spring to punch stripper piston; Yet this not necessarily.Punch stripper comprises the pressure-indication means of the pressure that is used for indicating the balancing gate pit; Yet this not necessarily.
According to another and/or the unrestricted aspect of replacing of the present invention, provide the punch stripper of above-mentioned announcement or any other to design arbitrarily, suppose that the working pressure chamber obtains load on spring; Yet this not necessarily.The unrestricted example of the such layout that can use in the present invention discloses in US 4292869, US4316399, EP 0622135 B1 or EP 0646427 B1, and all these are included in this by reference.
Of the present invention another and/or replace unrestricted aspect, a kind of punch stripper that adapts on the punch retainer that is fastened in the press tool is provided, punch stripper comprises punch stripper piston and balancing gate pit.The balancing gate pit adapts to the load on spring punch stripper piston.The balancing gate pit is limited by the internal axle sleeve of punch stripper and the gap between the outer shaft at least in part.Punch stripper piston has axial replaceable replaceable part in the gap of balancing gate pit.Basically, whole balancing gate pit is between the outer shaft and internal axle sleeve of punch stripper; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, the balancing gate pit comprises leader, replaceable part can move in leader; Yet this not necessarily.The chamber part of balancing gate pit and the leader of balancing gate pit axially separate; Yet this not necessarily.The chamber part of balancing gate pit has the transverse cross-sectional area bigger than leader; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, outer shaft has first and second portion, first has the first substantially invariable interior cross section, this first substantially invariable interior cross section forms the border surface of leader, second portion has cross section in second, and this second interior cross section is greater than the described first interior cross section and form portion boundary surface, chamber; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, internal axle sleeve has first and second portion, first has the first substantially invariable external cross section, the border surface second portion that this first substantially invariable external cross section forms leader has second external cross section, and this second external cross section is less than described first cross section and form portion boundary surface, chamber; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, internal axle sleeve can be fixed with respect to puncher; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, outer shaft can be fixed with respect to puncher; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, the replaceable part in the gap of punch stripper piston is with respect to internal axle sleeve and/or outer shaft sealing; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, punch stripper piston comprises and prevents the layout of punch stripper piston with respect to internal axle sleeve and/or outer shaft rotation; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, the device of the pressure in the indicated pressure chamber is provided; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, whether pressure-indication means adapts to pressure in the indicated pressure chamber and surpasses and/or be lower than predetermined value; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, pressure-indication means and punch stripper monolithic molding; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, pressure-indication means comprises load on spring portion, load on spring portion from punch stripper outside as seen; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, the press tool that comprises the puncher that is fastened to punch retainer and be fastened to the punch stripper of punch retainer is provided, punch retainer is fastened to the stroke part of press tool; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, press tool comprises at least two punch strippers; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, thereby the balancing gate pit of at least two punch strippers fluidly communicates each other keep identical pressure at least substantially in the balancing gate pit of two punch strippers; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, a kind of punch stripper that adapts on the punch retainer that is fastened in the press tool is provided, and punch stripper comprises punch stripper piston and adapts to the balancing gate pit of load on spring punch stripper piston; Yet this not necessarily.The indicating device of the pressure in the indicated pressure chamber can be provided; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, whether indicating device adapts to pressure in the indicated pressure chamber and surpasses and/or be lower than predetermined value; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, indicating device and punch stripper are integral parts; Yet this not necessarily.Of the present invention another and/or replace unrestricted aspect, indicating device comprises load on spring portion, load on spring portion from punch stripper outside as seen; Yet this not necessarily.
A unrestricted purpose of the present invention provides a kind of punch stripper of improvement.
Another unrestricted purpose of the present invention provides can be as the replacement of current available punch stripper or additional punch stripper on the market.
It is dangerous and near equipment the punch stripper and personnel produced dangerous dangerous minimized punch stripper that another unrestricted purpose of the present invention provides a kind of error that makes.
Another unrestricted purpose of the present invention provide a kind of can with the common punch stripper that uses of the punch retainer type that discloses among US 6182545 B1, US 6182545 B1 are included in this by reference.
When engaging the following description of accompanying drawing reading, those of ordinary skills will easily understand these and other objects of the present invention and advantage.
Description of drawings
Below with reference to accompanying drawing, the various preferred embodiments that accompanying drawing can adopt with physical form, with layout explanation the present invention of specific part and part, wherein:
Fig. 1 a-1b is the schematic cross-sectional view of press tool 3a, 3b, and punch retainer 2 and punch stripper 10 with puncher 1 have been installed in press tool 3a, 3b;
Fig. 2 and 2 ' is the schematic cross-sectional view with punch retainer 2 and punch stripper 10 of puncher 1;
Fig. 3 is the diagrammatic side view of punch stripper 10;
Fig. 4 a-4b is the schematic plan view of the punch stripper from Fig. 3 that the above and below is seen 10 respectively; And
Fig. 5 a-5c is the schematic plan view of the punch stripper 10 of modification.
The specific embodiment
Below with reference to accompanying drawing, wherein only for the purpose of explanation the preferred embodiments of the present invention and not for the purpose that limits, Fig. 1 has illustrated the press tool with upper tool part 3a and low tool part 3b to diagram.
In low tool part 3b, provide the punching mould.The workpiece 5 that can be sheet metal is arranged as and will be processed by press tool 3a, 3b.
Upper tool part 3 has punch retainer 2, and puncher 1 has punch stripper on punch retainer 2, and it is fastened by fastener 18a, 18b (for example screw, bolt, rivet etc.).Shown in Fig. 1 a, 1b and 2, fastener can be mounting screw/fastening bolt 18a, and the handle of mounting screw/fastening bolt 18a is disposed among the hole 18b of base portion 14a of punch stripper.
In unrestricted example of the present invention, punch retainer 2 can design (being that punch stripper can have the locking mechanism that is used for respect to punch retainer) with any way that discloses among US 6182545 B1.As what can expect, can use other locking mechanism that is used for punch retainer.Punch retainer 2 can be fixed with respect to upper tool part 3a, and for example by suitable connection, this connects such as but not limited to screw connection, bolt, rivet, welding etc.
Piston 11 can have the concentric, axial that is used to receive puncher and pass through the hole.Mill groove 17 as shown in Figure 3 can be formed on the side surface of piston.Can form corresponding grooves at the inner surface that closes on an one end surfaces of pipe portion.Jointly, grind surface (milled surfaces) and formed the rotation lock that prevents that piston 11 from rotating in pipe.Illustrated among Fig. 5 a-c to replace and arranged.Replace in the layout at this, on piston, insert opening, mill groove or seam.Shown in Fig. 5 a, seam 32 is positioned on the vertical or longitudinal axis of piston 11.Outer shaft 14 comprises the opening 34 that is used to receive pin shown in Fig. 5 c or screw 36.Thereby the holding the seam 32 that inserts piston to small part to stop or prevent from pipe, to rotate of pin or screw.If desired, for the side surface of dust particle from piston removed, can sealing ingot stripper (figure does not show) be installed at other end of pipe portion.
The 12a of balancing gate pit, 12b are formed by the space between outer shaft 14 and the internal axle sleeve 13, promptly between the overall diameter and sealing ring of the interior diameter of pipe portion and inner piston rod.Can exert pressure to the 12a of balancing gate pit, 12b by the nitrogen that charges into by the valve 30 (seeing Fig. 2 ') that is installed in pipe portion.According to application, the charged pressure of use can change, and pressure can be up to about 200 crust.Usually, according to the difference that punching is used, stuffing pressure can be between 20 to 100 crust.
For whether the 12a of balancing gate pit, the 12b that easily determines punch stripper is pressed, pressure indicator 20 can be integrated into pipe portion, for example close on charge valve 30.Pressure indicator 20 can comprise the Elastip pin 21 of inside biasing, and this pin 21 may be connected to plate 24, when to the 12a of balancing gate pit, when 12b exerts pressure plate 24 is released.If the 12a of balancing gate pit, 12b are not pressed, pin 21 can be drawn into.In this way, check easily whether the 12a of balancing gate pit, 12b have pressure.Further, pressure indicator 20 can comprise: flexible member 22, thus the spring constant of this flexible member 22 can selectedly be indicated the pressure that surpasses predetermined value; And sealing ring 23, sealing circle 23 can be the form of O ring etc.
According to unshowned embodiment here, the longer pin 21 that is integrated in the outer shaft 14 can form the Pressure gauge similar with thermometer together with the scale that provides on the outer shaft 14, and this Pressure gauge can directly be read.
Determine that another the mode whether balancing gate pit is pressed is that punch stripper is connected on some other visual detectors (for example light, ammeter etc.) and/or the sound generation equipment.Another that determine whether the balancing gate pit is pressed or append mode are punch stripper to be connected to be used for the equipment that external pressure monitors.This allows easily to control from the drilling tool outside and monitors pressure the punch stripper.Also can for example provide electrical indicator by pressure sensor, this electrical indicator is connected to recoil simulator by control circuit, and this recoil simulator is such as but not limited to display, loudspeaker, lamp or transmitter.
Be provided under the situation of press tool 3a, 3b at two or more punch strippers 10, these punch strippers can be connected with each other, thereby the pressure in all punch strippers 10 is basic identical; Yet this is not necessary.In this embodiment, punch stripper can be connected to controll block, and this controll block can have aerating device, pressure-reducing valve, be used to refer to overpressure protection and/or pressure monitoring equipment that pressure surpasses or be lower than predetermined value.Aforesaid pressure indicator can be integrated in such controll block.
Thereby obtain above-mentioned purpose from the conspicuous purpose of aforementioned description as can be seen efficiently, and owing under prerequisite without departing from the spirit and scope of the present invention, can carry out specific change to the structure here, all the elements that comprise in the foregoing description, shown in the accompanying drawing be appreciated that be used to illustrate rather than be used to limit.The present invention is described with reference to preferred and alternative embodiment.For those of ordinary skills when reading and the going through of the invention that provides here be provided, modification and to replace will be conspicuous.When modification with when replacing within the scope of the present invention, this invention is intended to comprise all such modification and replacements at present.It should also be understood that following claim be intended to cover all of invention described herein common with specific feature, and can think the scope that falls into claim as all statements of language to invention scope.
Claims (according to the modification of the 19th of treaty)
1. punch stripper that adapts on the punch retainer that is fastened in the press tool, comprise punch stripper piston and balancing gate pit, described balancing gate pit is designed to the described punch stripper piston of load on spring, described balancing gate pit is limited by the gap between internal axle sleeve and the outer shaft at least in part, described punch stripper piston has axial replaceable replaceable part in described gap, basically whole balancing gate pit is between described internal axle sleeve and described outer shaft, described balancing gate pit comprises leader and chamber part, described leader is designed so that the described replaceable part of described punch stripper can move in described leader, described chamber part is axially separated with described leader, and described chamber part has the transverse cross-sectional area bigger than described leader.
2. punch stripper according to claim 1, wherein said outer shaft has first and second portion, described first has cross section in first, this first interior cross section forms the border surface of the described leader of described balancing gate pit, described second portion has cross section in second, cross section is greater than cross section to small part described first to the small part described second, and described second portion forms the portion boundary surface, described chamber of described balancing gate pit.
3. punch stripper according to claim 2, cross section has the average cross-section zone in wherein said first, cross section has the average cross-section zone in described second, and the described average cross-section zone of the described second interior cross section is greater than the described average cross-section zone of the described first interior cross section.
4. punch stripper according to claim 3, the wherein said first interior cross section has substantially invariable transverse cross-sectional area.
5. according to claim 3 or 4 described punch strippers, the wherein said second interior cross section has substantially invariable transverse cross-sectional area.
6. according to each described punch stripper among the claim 1-5, wherein internal axle sleeve comprises first and second portion, described first and second parts are axially separated each other, described first forms the border surface of the described leader of described balancing gate pit, described second portion forms the portion boundary surface, described chamber of described balancing gate pit, described internal axle sleeve have different transverse cross-sectional area to described first and second parts of small part.
7. punch stripper according to claim 6, the described transverse cross-sectional area substantially constant of the described first of wherein said internal axle sleeve.
8. according to claim 6 or 7 described punch strippers, wherein said second portion to the described transverse cross-sectional area of the described transverse cross-sectional area of small part greater than described first.
9. according to each described punch stripper among the claim 1-8, wherein said internal axle sleeve is fixed with respect to described puncher.
10. according to each described punch stripper among the claim 1-9, wherein said outer shaft is fixed with respect to described puncher.
11. according to each described punch stripper among the claim 1-10, the described replaceable part of wherein said punch stripper piston is with respect to the combination of described internal axle sleeve, described outer shaft or described internal axle sleeve and described outer shaft and seal.
12. according to each described punch stripper among the claim 1-11, wherein said punch stripper piston to small part comprises forbids or prevents that described punch stripper piston is with respect to the combination of described internal axle sleeve, described outer shaft or described internal axle sleeve and described outer shaft and the rotation inhibiting apparatus of rotating.
13., comprise the pressure-indication means of the pressure in the described balancing gate pit of indication according to each described punch stripper among the claim 1-12.
14. punch stripper according to claim 13, wherein said pressure-indication means are designed to indicate the pressure in the described balancing gate pit to surpass predetermined value, be lower than predetermined value or both combinations.
15. according to claim 13 or 14 described punch strippers, wherein said pressure-indication means and described punch stripper monolithic molding.
16. according to each described punch stripper among the claim 13-15, wherein said pressure-indication means comprises load on spring portion, described load on spring portion from the outside of described punch stripper at least in part as seen.
17. according to each described punch stripper among the claim 1-16, wherein said punch stripper links to each other with press tool at least in part by punch retainer.
18. punch stripper according to claim 17, wherein said punch retainer is fastened to the stroke part of press tool at least in part.
19., comprise second punch stripper that links to each other with press tool according to each described punch stripper among the claim 1-18.
20. punch stripper according to claim 19, the balancing gate pit of wherein said two punch strippers fluid each other is communicated with.
21. according to claim 19 or 20 described punch strippers, the described pressure in the described balancing gate pit of wherein said two punch strippers is basic identical.
22. punch stripper that adapts on the punch retainer that is fastened in the press tool, comprise punch stripper piston, balancing gate pit and pressure-indication means, described balancing gate pit is designed to the described punch stripper piston of load on spring, described balancing gate pit is limited by the gap between internal axle sleeve and the outer shaft at least in part, described punch stripper piston has axial replaceable replaceable part in described gap, described pressure-indication means is used for indicating the pressure of described balancing gate pit, and wherein said pressure-indication means is designed to indicate the pressure in the described balancing gate pit to surpass predetermined value, be lower than predetermined value, or both combinations.
23. punch stripper according to claim 22, wherein said pressure-indication means and described punch stripper monolithic molding.
24. according to claim 22 or 23 described punch strippers, wherein said pressure-indication means comprises load on spring portion, described load on spring portion from the outside of described punch stripper at least in part as seen.
25. according to each described punch stripper among the claim 22-24, wherein said pressure-indication means comprises load on spring portion, described load on spring portion from the outside of described punch stripper at least in part as seen.
Claims (27)
1. punch stripper that adapts on the punch retainer that is fastened in the press tool, comprise punch stripper piston and balancing gate pit, described balancing gate pit is designed to the described punch stripper piston of load on spring, described balancing gate pit is limited by the gap between internal axle sleeve and the outer shaft at least in part, described punch stripper piston has axial replaceable replaceable part in described gap, and whole basically balancing gate pit is between described internal axle sleeve and described outer shaft.
2. punch stripper according to claim 1, wherein said balancing gate pit comprises leader and chamber part, described leader is designed so that the described replaceable part of described punch stripper can move in described leader, described chamber part is axially separated with described leader, and described chamber part has the transverse cross-sectional area bigger than described leader.
3. punch stripper according to claim 2, wherein said outer shaft has first and second portion, described first has cross section in first, this first interior cross section forms the border surface of the described leader of described balancing gate pit, described second portion has cross section in second, cross section is greater than cross section to small part described first to the small part described second, and described second portion forms the portion boundary surface, described chamber of described balancing gate pit.
4. punch stripper according to claim 3, cross section has the average cross-section zone in wherein said first, cross section has the average cross-section zone in described second, and the described average cross-section zone of the described second interior cross section is greater than the described average cross-section zone of the described first interior cross section.
5. punch stripper according to claim 3, the wherein said first interior cross section has substantially invariable transverse cross-sectional area.
6. according to claim 4 or 5 described punch strippers, the wherein said second interior cross section has substantially invariable transverse cross-sectional area.
7. according to each described punch stripper among the claim 2-6, wherein internal axle sleeve comprises first and second portion, described first and second parts are axially separated each other, described first forms the border surface of the described leader of described balancing gate pit, described second portion forms the portion boundary surface, described chamber of described balancing gate pit, described internal axle sleeve have different transverse cross-sectional area to described first and second parts of small part.
8. punch stripper according to claim 7, the described transverse cross-sectional area substantially constant of the described first of wherein said internal axle sleeve.
9. according to claim 7 or 8 described punch strippers, wherein said second portion to the described transverse cross-sectional area of the described transverse cross-sectional area of small part greater than described first.
10. according to each described punch stripper among the claim 1-9, wherein said internal axle sleeve is fixed with respect to described puncher.
11. according to each described punch stripper among the claim 1-10, wherein said outer shaft is fixed with respect to described puncher.
12. according to each described punch stripper among the claim 1-11, the described replaceable part of wherein said punch stripper piston is with respect to the combination of described internal axle sleeve, described outer shaft or described internal axle sleeve and described outer shaft and seal.
13. according to each described punch stripper among the claim 1-12, wherein said punch stripper piston to small part comprises forbids or prevents that described punch stripper piston is with respect to the combination of described internal axle sleeve, described outer shaft or described internal axle sleeve and described outer shaft and the rotation inhibiting apparatus of rotating.
14., comprise the pressure-indication means of the pressure in the described balancing gate pit of indication according to each described punch stripper among the claim 1-13.
15. punch stripper according to claim 14, wherein said pressure-indication means are designed to indicate the pressure in the described balancing gate pit to surpass predetermined value, be lower than predetermined value or both combinations.
16. according to claim 14 or 15 described punch strippers, wherein said pressure-indication means and described punch stripper monolithic molding.
17. according to each described punch stripper among the claim 14-16, wherein said pressure-indication means comprises load on spring portion, described load on spring portion from the outside of described punch stripper at least in part as seen.
18. according to each described punch stripper among the claim 1-17, wherein said punch stripper links to each other with press tool at least in part by punch retainer.
19. punch stripper according to claim 18, wherein said punch retainer is fastened to the stroke part of press tool at least in part.
20., comprise second punch stripper that links to each other with press tool according to each described punch stripper among the claim 1-19.
21. punch stripper according to claim 20, the balancing gate pit of wherein said two punch strippers fluid each other is communicated with.
22. according to claim 20 or 21 described punch strippers, the described pressure in the described balancing gate pit of wherein said two punch strippers is basic identical.
23. punch stripper that adapts on the punch retainer that is fastened in the press tool, comprise punch stripper piston, balancing gate pit and pressure-indication means, described balancing gate pit is designed to the described punch stripper piston of load on spring, described balancing gate pit is limited by the gap between internal axle sleeve and the outer shaft at least in part, described punch stripper piston has axial replaceable replaceable part in described gap, and described pressure-indication means is used for indicating the pressure of described balancing gate pit.
24. punch stripper according to claim 23, wherein said pressure-indication means are designed to indicate the pressure in the described balancing gate pit to surpass predetermined value, be lower than predetermined value or both combinations.
25. according to claim 23 or 24 described punch strippers, wherein said pressure-indication means and described punch stripper monolithic molding.
26. according to each described punch stripper among the claim 23-25, wherein said pressure-indication means comprises load on spring portion, described load on spring portion from the outside of described punch stripper at least in part as seen.
27. according to each described punch stripper among the claim 23-26, wherein said pressure-indication means comprises load on spring portion, described load on spring portion from the outside of described punch stripper at least in part as seen.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0602363A SE530555C2 (en) | 2006-11-06 | 2006-11-06 | Punch stripper for use in press tool for punching hole in metal sheet has punch stripper piston having displacement portion that is axially displaced in gap |
| SE06023634 | 2006-11-06 | ||
| US60/856,837 | 2006-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101534975A true CN101534975A (en) | 2009-09-16 |
Family
ID=39456241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800411416A Pending CN101534975A (en) | 2006-11-06 | 2007-11-05 | Punch stripper |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101534975A (en) |
| ES (1) | ES2348194T3 (en) |
| SE (1) | SE530555C2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861217B (en) * | 2007-11-13 | 2012-08-29 | 异型弹簧有限公司 | Gas-operated integrated punching device with plate presser |
| CN102699182A (en) * | 2012-06-05 | 2012-10-03 | 宁波世捷新能源科技有限公司 | Adjustable accurate positioning and punching device used for electric core of lithium-ion battery |
-
2006
- 2006-11-06 SE SE0602363A patent/SE530555C2/en unknown
-
2007
- 2007-11-05 CN CNA2007800411416A patent/CN101534975A/en active Pending
- 2007-11-05 ES ES07819573T patent/ES2348194T3/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861217B (en) * | 2007-11-13 | 2012-08-29 | 异型弹簧有限公司 | Gas-operated integrated punching device with plate presser |
| CN102699182A (en) * | 2012-06-05 | 2012-10-03 | 宁波世捷新能源科技有限公司 | Adjustable accurate positioning and punching device used for electric core of lithium-ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2348194T3 (en) | 2010-12-01 |
| SE0602363L (en) | 2008-05-07 |
| SE530555C2 (en) | 2008-07-08 |
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Application publication date: 20090916 |