CN1304136C - End plate shaping apparatus - Google Patents
End plate shaping apparatus Download PDFInfo
- Publication number
- CN1304136C CN1304136C CNB2004100331335A CN200410033133A CN1304136C CN 1304136 C CN1304136 C CN 1304136C CN B2004100331335 A CNB2004100331335 A CN B2004100331335A CN 200410033133 A CN200410033133 A CN 200410033133A CN 1304136 C CN1304136 C CN 1304136C
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- water
- hydraulic
- pump
- seal head
- blank
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- 238000007493 shaping process Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000003860 storage Methods 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims description 41
- 239000003921 oil Substances 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000002828 fuel tank Substances 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
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Abstract
The present invention relates to an end socket forming machine which comprises a machine platform, a blank fixing device, a hydraulic forming system, a material conveying device and a control cabinet. The machine platform comprises an upper die seat and a lower die seat, wherein the lower surface of the upper die seat is provided with a plurality of guide rails; the upper surface of the lower die seat is provided with a water outlet and an air vent; a sealing plate used for placing and sealing blanks is lain on the lower die seat. The blank fixing device comprises a plurality of hydraulic cylinders which can be movably arranged on the guide rails of the upper die seat, and a drawing ring which is arranged on the blanks to tightly press the blanks, wherein the hydraulic cylinders are driven by an oil hydraulic system, and the tail end of a piston rod of the oil hydraulic system can tightly pushes the drawing ring. The hydraulic forming system comprises at least one motor test pump, one storage water tank and corresponding water tubes, wherein the motor test pump can pump water in the storage water tank through the water tubes, and can pressurize the water to fill the water into forming space limited by the drawing ring. The control cabinet is used for coordinating and controlling the movement of each component of the end socket forming machine.
Description
Technical field
The invention relates to a kind of column formed product equipment, refer in particular to a kind of employing hydraulic pressure, hydraulic pressure and mechanically combining operation, can effectively enhance productivity, can also adapt to the production of difform end socket, with the seal head molding equipment of the head contour that obtains standard.
Background technology
In industries such as automobile, mechanical five metals, the mode of conventional machinery punching press is processed the product that is similar to pressure vessel head.This mode mainly utilizes pressing equipment to pass through the effect of mould, makes blank obtain needed part shape and size.Yet when adopting this processing mode, the surface quality of stamping parts, dimensional tolerance, productivity ratio and economic benefit etc. are very big with the relation of mould structure and appropriate design thereof, need spend a lot of time designing moulds.And when the end socket shape, when specification has change, mould promptly need upgrade, cause cost higher, also be difficult to satisfy the ageing of modern processing.
In addition, adopt the technology of hydraulic pressure-rubber padding to process the product that is similar to end socket in the prior art in addition, it is characterized in that making component shaping with highly pressurised liquid by rubber die, rubber die and highly pressurised liquid are formed a fluid punch, workpiece is applied briquetting pressure process type.In this processing mode, upper and lower mould normally connects by bolt, thereby is adding operations such as having had more line, boring, bolted man-hour, wasted lot of manpower and material resources, and inefficiency, under the situation of output sustainable growth, be difficult to meet the needs of production.
Summary of the invention
The object of the present invention is to provide a kind of seal head molding equipment, it adopts hydraulic pressure, hydraulic pressure and mechanically combining operation, can effectively enhance productivity, and can also adapt to the production of difformity end socket, and obtains the head contour of standard.
According to above-mentioned purpose, the invention provides a kind of seal head molding equipment, it comprises a board, a blank fixture, a hydraulic pressure formation system, a material conveying device and a switch board.This board comprises upper bolster and die shoe, wherein, is provided with some guide rails on the lower surface of this upper bolster; This die shoe upper surface is provided with a delivery port and a blow vent, also is equipped with a sealing plate for placing blank and sealing on this die shoe.This blank fixture comprises that the hydraulic cylinder and on several guide rails that are installed in this upper bolster movably places and is used to the blank holder that compresses on the blank, these hydraulic cylinders are driven by an oil hydraulic system, and its piston rod can move up and down and its end is pressed on the blank holder; This hydraulic pressure formation system comprises at least one motor test pump, a storage tank and corresponding water pipe, wherein this motor test pump communicates with the delivery port of storage tank and die shoe respectively by water pipe, water in the storage tank can be extracted out and pressurization, be injected in the molding space of this blank holder qualification by delivery port again; This switch board is used for coordinating to control each part action of this seal head molding equipment.
Some screw mandrels also are housed on the lower surface of this upper bolster, and an end of this screw mandrel is connected with this hydraulic cylinder, drives this screw mandrel by manual or pneumatic impact spanner, and and then promotes this hydraulic cylinder and move along guide rail.
This motor test pump inside has a water tank, and the water of extracting out in the storage tank injects in this water tank, and is injected in the molding space that blank holder limits by delivery port after with the pressurization of the water in the water tank by motor test pump again.
This hydraulic pressure system comprises that also one is connected in draining valve and water pump that links to each other with this draining valve and storage tank respectively of this delivery port below, can the water in the molding space be extracted out and drain in the storage tank by water pump.
This hydraulic pressure system also comprises and one being connected with this blow vent, and can be with the compressed air line in the compressed air injection moulding space when draining.
This material conveying device comprises a dolly, two parallel slide rails and some frames, and these frames are found a side of being located at board and the confession dolly in these frames apical support and come and go two slide rails that slide.
This oil hydraulic system comprises a fuel tank, a high-pressure pump, a low-lift pump and corresponding oil circuit, wherein high-pressure pump is a pressure-compensated axial variable displacement plunger pump that is used for providing to these hydraulic cylinders hydraulic oil, and low-lift pump is to be used for providing to hydraulic cylinder the gear pump of low voltage control oil.
This switch board comprises the control circuit of control hydraulic system action, the control circuit of control hydraulic pressure formation system action and the control circuit of control material conveying device action.
The cabinet face of this switch board is provided with the button of several respectively corresponding above-mentioned each control circuits.
Described sealing plate is to be made by rubber or other elastomeric materials.
Owing to adopted above-mentioned technical scheme, the present invention has following advantage at least: seal head molding equipment of the present invention adopts hydraulic pressure, hydraulic pressure and mechanically combining operation, avoided manual bolt to be connected and fixed upper and lower mould, not only fast, accurately, firmly stationary positioned end cover blank, effectively enhance productivity, but also can pass through to change different blank holders, and can adapt to the production of difformity end socket, obtain the head contour of standard.
Description of drawings
Fig. 1 is the three-dimensional exploded view of seal head molding equipment of the present invention.
Fig. 2 is the three-dimensional combination figure of seal head molding equipment of the present invention.
Fig. 3 is that the upper bolster upset back of seal head molding equipment of the present invention shows the view that hydraulic cylinder distributes.
Fig. 4 is the machining state schematic diagram of seal head molding equipment of the present invention.
Fig. 5 is the work flow schematic diagram of seal head molding equipment of the present invention when the processing end socket.
The specific embodiment
See also Fig. 1 and Fig. 2, seal head molding equipment of the present invention comprises a board 1, a blank fixture 3, a hydraulic pressure formation system 4, a material conveying device 5 and a switch board 7.
Wherein, this board 1 comprises relative up and down upper bolster 11 and die shoe 12.The some guide pillars 13 that run through this upper bolster 11 are housed between upper bolster 11 and the die shoe 12, play connection and supporting role, and this upper bolster 11 can move up and down along guide pillar 13.On the lower surface of this upper bolster 11, be provided with some guide rails 14.Middle position is provided with a delivery port 17 and a blow vent 19 on this die shoe 12, also be equipped with a sealing plate 18 on the upper surface of this die shoe 12, so that seal man-hour adding, sealing plate 18 can be made by rubber, certainly also make by other highly elastic materials, and for obtaining the better seal effect, sealing plate 18 can be adhesive on this die shoe 12.Also the middle part of sealing plate 18 can be hollowed out, to expose this delivery port 17 and blow vent 19.
This blank fixture 3 comprises that several hydraulic cylinders 31 and can be positioned over the blank holder 32 and the corresponding oil hydraulic system 33 of blank 8 tops.These hydraulic cylinders 31 are on the guide rail 14 that is installed in movably on these upper bolster 11 lower surfaces, function with pressurize, automated backhaul, the piston rod 34 of each hydraulic cylinder 31 all down, can move up and down and its end tightly is pressed on the blank holder 32, like this, can be in end socket 9 forming processes compress and fixing blank holder 32 and guarantee the displacement that blank 8 can occurred level.Several screw mandrels 35 also are housed on the lower surface of this upper bolster 11, one end of every rhizoid bar 35 is connected with a corresponding hydraulic cylinder 31, can regulate this screw mandrel 35 by manual or pneumatic impact spanner, and and then promote corresponding hydraulic cylinder 31 and move along guide rail 14 and change hydraulic cylinder 31 positions, and can be when producing the end socket of dissimilar, specification, can adapt to the variation of blank holder 32 shapes, make piston rod 34 can be pressed on exactly on the blank holder 32 all the time.The shape of this blank holder 32 has various forms such as circle, ellipse, square circular, and it can be selected according to profile, the specification of different end sockets.Control the profile of end socket 9 by the shape of selecting this blank holder 32.
The hydraulic principle of these hydraulic cylinders 31 is as follows: these hydraulic cylinders 31 are driven by this oil hydraulic system 33, in the present invention, this oil hydraulic system 33 is contained on the upper bolster upper surface, comprise a fuel tank 60, a high-pressure pump 61, a low-lift pump 62, corresponding oil circuit 63, wherein high-pressure pump 61 is pressure-compensated axial variable displacement plunger pumps, and being used for provides hydraulic oil for these hydraulic cylinders 31.Low-lift pump 62 is a gear pump, is to be used for providing low pressure oil for hydraulic cylinder 31.And these hydraulic cylinders 31 can be divided into two groups, as shown in Figure 3, in this embodiment of the present invention, 12 hydraulic cylinders are arranged, can divide at first group with adjacent three hydraulic cylinders and with centrosymmetric three hydraulic cylinders of these three hydraulic cylinders, and remaining as second group (certainly, packet mode can variation, as, the hydraulic cylinder of space is divided at same group), and same group hydraulic cylinder realizes that hydraulic cylinder on the same group is not asynchronous synchronously.When formed head, under the coordination of switch board 7, pass through chain function, after first group of hydraulic cylinder release, second group of hydraulic cylinder just moves, and after the end socket setting is finished, then be that second group of hydraulic cylinder carries out release backhaul action earlier, be only first group of hydraulic cylinder then and carry out the release backhaul.
This hydraulic pressure formation system 4 is to be used to provide the required motive power of seal head molding.This hydraulic pressure formation system 4 comprises at least one motor test pump 41 (being depicted as 3 in the present embodiment), a water pump 42, a storage tank 43 and corresponding water pipe 44.Wherein this motor test pump 41 manufactures and designs according to the mechanical industry standard of country, and its inside has a water tank (scheming not shown).This motor test pump 41 is connected with the delivery port 17 of storage tank 43 and die shoe 12 respectively by water pipe 44, this motor test pump 41 can be extracted the water in the storage tank 43 out and inject in its inner water tank, and discharging with the water pressurization and by the delivery port 17 of die shoe 12 provides the moulding water under high pressure again.One draining valve (scheming not shown) and a water pump 42 also are housed between delivery port 17 and storage tank 43, after moulding is finished, open this draining valve, can water be extracted out in the storage tank 43 that reinjects and recycles by going out saliva 17 by water pump 42.This hydraulic pressure system 4 also can comprise a compressed air line (scheming not shown) that links to each other with blow vent 19 on the die shoe 12, its can be when draining by this blow vent 19 with in the compressed air injection moulding space to increase drainage speed.
This material conveying device 5 comprises a dolly 51, two parallel slide rails 52 and some frames 53, these frames 53 are stood and are located at a side of board 1 and two slide rails 52 in these frames 53 apical support, come and go on this slide rail 52 for dolly 51 and slide.This dolly 51 can be used to carry out transmission, sending to of blank and the sending of formed head of blank holder 32.Dismounting for convenience, frames 53 can adopt split-type structural.
Be provided with the hydraulic parameter of adjusting each hydraulic cylinder 31 in this switch board 7 and can control the control circuit of hydraulic system 33 actions, the control circuit of control hydraulic pressure formation system 4 actions and the control circuit that control dolly 51 slides on slide rail 52.On these switch board 7 cabinet faces, be provided with the button 72 of several respectively corresponding above-mentioned each control circuits, so that process operation.Can drive motor test pump 41, water pump 42 of high-pressure hydraulic pump 61, low-lift pump 62, the hydraulic pressure formation system 4 of hydraulic system 33 etc. by these control circuits, and then tunable is controlled the action of each parts of this seal head molding equipment.
This seal head molding equipment is hydraulic pressure forming principle, hydraulic principle and theory of mechanics perfect adaptation, and is applied in the production practices, produced huge economic benefit.Seal head molding equipment of the present invention can be used to process multiple end socket, as automobile end socket, pressure vessel head etc.
See also Fig. 4, shown in be the machining state schematic diagram of seal head molding equipment of the present invention, in the embodiment shown in fig. 4, hydraulic cylinder 31 adds up to 8 owing to be even distribution, visible 4 from the view directions of Fig. 3.Fig. 5 is the work flow schematic diagram of seal head molding equipment of the present invention when the processing end socket.When processing end socket 9, at first the hydraulic parameter of hydraulic cylinder 31 is adjusted, and blank holder 32 adjusted to the height that blank holder 32 is installed, use dolly 51 with blank holder 32 feed station again, available connector such as hook is connected blank holder 32 lower end of the piston rod 34 of hydraulic cylinder 31, and control piston bar 34 moves upward and promotes blank holder 32, afterwards, allows dolly 51 withdraw from station; Secondly, end cover blank 8 is placed on the dolly 51, feed station, and end cover blank 8 is connected blank holder 32 belows with linking up with, control piston bar 34 moves upward and blank holder 32 and end cover blank 8 is together promoted once more, allows dolly 51 withdraw from station; Then, come piston rod 34 actions for hydraulic cylinder 31 provides low pressure oil, piston rod 34 is moved downward by low-lift pump 62, when end cover blank 8 stacks on the sealing plate 18, remove being connected between blank 8 and the blank holder 32, at this moment, blank holder 32 presses on blank 8; Then, for each hydraulic cylinder 31 provides high voltage power, make piston rod 34 tightly compress blank holder 32 by high-pressure pump 61, according to the pressure pressurize that configures, in addition, can also be according to wanting the dimensional requirement of the end socket 9 of machine-shaping that one altitude scale (scheming not shown) is set.Like this, not only blank holder 32 and blank 8 are all located securely, and the also compacted distortion of sealing plate 18, thereby play sealing effectiveness well.Described blank holder 32 is used for controlling the end socket shape, needs to change corresponding blank holder 32 according to difform end socket 9.Because the shape difference of blank holder 32, corresponding change also will be made in the position of hydraulic cylinder 31, can control screw mandrel 35 by manual or pneumatic impact spanner rotates, and then promote hydraulic cylinder 31 and slide the position of adjusting hydraulic cylinder 31 adapting to difform blank holder 32 along the guide rail 14 on the lower surface that is contained in upper bolster 11, and its piston rod 34 is pressed on the blank holder 32 exactly.
After finishing the preceding step of above-mentioned moulding, operate on the switch board 7 corresponding button 72 again and start motor test pump 41, water in the storage tank 43 is extracted out the inner tank of injecting motor test pump 41, and by after motor test pump 41 pressurizations water under high pressure being discharged from the delivery port 17 of die shoe 12, at this moment, because sealing plate 18 is compressed sealing by blank holder 32, water under high pressure can't be to discharging all around, make end cover blank 8 under the pressure effect of water under high pressure, in the space that blank holder 32 limits, make progress protuberance and make blank 8 moulding, when reaching the altitude scale position, keep the hydraulic pressure certain hour to come end socket 9 is given finalization again; After setting is finished, open draining valve water under high pressure is expelled in the storage tank 43 to realize recycling of water,, can start this water pump 42 and draw water for quickening draining.When draining to back to a certain degree owing to form factor such as vacuum in atmospheric pressure and the molding space, remaining water row does not come out, and needs this moment to oppress remaining water and arranged fast by the interior injecting compressed air of compressed air hose road direction molding space.
After draining is finished, with hook end socket 9 and blank holder 32 are coupled together again, the piston rod 34 of control hydraulic cylinder 31 moves upward and promotes blank holder 32 and end socket 9, slide into dolly 51 this moment again, releasing end socket 9 is connected with blank holder 32, end socket 9 promptly drops on the dolly 51, and dolly 51 is withdrawed from platform, end socket 9 handlings of forming can be carried out following process such as flange to the end socket flanger.
Present embodiment is just in order further more clearly to describe the present invention, but not limitation of the present invention.Be to be understood that the present invention is not limited in the elaboration that embodiment does, anyly all should be encompassed within the design and scope of claim of the present invention based on modification of the present invention and equivalent of the present invention.
Claims (10)
1, a kind of seal head molding equipment, comprise a board, a blank fixture, a hydraulic pressure formation system, a material conveying device and switch board, wherein this board comprises upper bolster and die shoe, it is characterized in that: the lower surface of this upper bolster is provided with some guide rails, this die shoe upper surface is provided with a delivery port and a blow vent, also is equipped with a sealing plate for placing blank and sealing on this die shoe; This blank fixture comprises that the hydraulic cylinder and on several guide rails that are installed in this upper bolster movably places and is used to the blank holder that compresses on the blank, these hydraulic cylinders are driven by an oil hydraulic system, and its piston rod can move up and down and its end is pressed on the blank holder; This hydraulic pressure formation system comprises at least one motor test pump, a storage tank and corresponding water pipe, wherein this motor test pump communicates with the delivery port of storage tank and die shoe respectively by water pipe, water in the storage tank can be extracted out and pressurization, inject in the molding space that this blank holder limits the blank moulding of exerting pressure by delivery port again.
2, seal head molding equipment as claimed in claim 1, it is characterized in that: some screw mandrels also are housed on the lower surface of this upper bolster, one end of this screw mandrel is connected with this hydraulic cylinder, drives this screw mandrel by manual or pneumatic impact spanner, and and then promotes this hydraulic cylinder and move along guide rail.
3, seal head molding equipment as claimed in claim 1, it is characterized in that: this motor test pump inside has a water tank, the water of extracting out in the storage tank injects in this water tank, and is injected in the molding space that blank holder limits by delivery port after with the pressurization of the water in the water tank by motor test pump again.
4, seal head molding equipment as claimed in claim 3, it is characterized in that: this hydraulic pressure system comprises that also one is connected in draining valve and water pump that links to each other with this draining valve and storage tank respectively of this delivery port below, can the water in the molding space be extracted out and drain in the storage tank by water pump.
5, seal head molding equipment as claimed in claim 4 is characterized in that: this hydraulic pressure system also comprises and one being connected with this blow vent, and can be with the compressed air line in the compressed air injection moulding space when draining.
6, seal head molding equipment as claimed in claim 1, it is characterized in that: this material conveying device comprises a dolly, two parallel slide rails and some frames, and these frames are found a side of being located at board and the confession dolly in these frames apical support and come and go two slide rails that slide.
7, seal head molding equipment as claimed in claim 1 or 2, it is characterized in that: this oil hydraulic system is installed on the upper surface of upper bolster, it comprises a fuel tank, a high-pressure pump, a low-lift pump and corresponding oil circuit, wherein high-pressure pump is a pressure-compensated axial variable displacement plunger pump that is used for providing to these hydraulic cylinders hydraulic oil, and low-lift pump is to be used for providing to hydraulic cylinder the gear pump of low voltage control oil.
8, seal head molding equipment as claimed in claim 1 is characterized in that: this switch board comprises the control circuit of control hydraulic system action, the control circuit of control hydraulic pressure formation system action and the control circuit of control material conveying device action.
9, seal head molding equipment as claimed in claim 8 is characterized in that: the cabinet face of this switch board is provided with the button of several respectively corresponding above-mentioned each control circuits.
10, seal head molding equipment as claimed in claim 1, it is characterized in that: the sealing plate is made by rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100331335A CN1304136C (en) | 2004-04-06 | 2004-04-06 | End plate shaping apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100331335A CN1304136C (en) | 2004-04-06 | 2004-04-06 | End plate shaping apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1680052A CN1680052A (en) | 2005-10-12 |
| CN1304136C true CN1304136C (en) | 2007-03-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100331335A Expired - Fee Related CN1304136C (en) | 2004-04-06 | 2004-04-06 | End plate shaping apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1304136C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240323B (en) * | 2013-04-29 | 2016-01-20 | 重庆铁马工业集团有限公司 | End socket shaped by fluid pressure method |
| CN105750391A (en) * | 2016-03-25 | 2016-07-13 | 滁州永强汽车制造有限公司 | Seal head double-surface forming expansion machine |
| CN117225973B (en) * | 2023-11-15 | 2024-04-09 | 广东思豪内高压科技有限公司 | Intelligent pressure control method based on internal high-pressure forming machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4951492A (en) * | 1988-06-16 | 1990-08-28 | Mannesmann Ag | Hydraulic expansion of tubing |
| JPH08112627A (en) * | 1994-10-14 | 1996-05-07 | Takasago Seisakusho:Kk | Hydrostatic forming of metal goods |
| CN2260674Y (en) * | 1996-08-09 | 1997-08-27 | 黄多 | One-time forming device for thin-wall ball cover |
| CN2700019Y (en) * | 2004-04-06 | 2005-05-18 | 东莞市永强汽车制造有限公司 | End socket forming machine |
-
2004
- 2004-04-06 CN CNB2004100331335A patent/CN1304136C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4951492A (en) * | 1988-06-16 | 1990-08-28 | Mannesmann Ag | Hydraulic expansion of tubing |
| JPH08112627A (en) * | 1994-10-14 | 1996-05-07 | Takasago Seisakusho:Kk | Hydrostatic forming of metal goods |
| CN2260674Y (en) * | 1996-08-09 | 1997-08-27 | 黄多 | One-time forming device for thin-wall ball cover |
| CN2700019Y (en) * | 2004-04-06 | 2005-05-18 | 东莞市永强汽车制造有限公司 | End socket forming machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1680052A (en) | 2005-10-12 |
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Effective date of registration: 20190327 Address after: No. 270 Tongling East Road, Chuzhou City, Anhui Province Patentee after: CHUZHOU YONGQIANG AUTOMOBILE MANUFACTURING CO.,LTD. Address before: 523000 Tangyi Industrial Zone, Liaobu Town, Dongguan City, Guangdong Province Patentee before: Dongguan Yongqiang Vehicles Manufacturing Co.,Ltd. |
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Granted publication date: 20070314 |
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