CN201833662U - Die stamping device and die stamping tube - Google Patents
Die stamping device and die stamping tube Download PDFInfo
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- CN201833662U CN201833662U CN2010202810744U CN201020281074U CN201833662U CN 201833662 U CN201833662 U CN 201833662U CN 2010202810744 U CN2010202810744 U CN 2010202810744U CN 201020281074 U CN201020281074 U CN 201020281074U CN 201833662 U CN201833662 U CN 201833662U
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- pressing
- heat
- back apparatus
- crawler belt
- seal box
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Abstract
The utility model discloses a die stamping device which comprises a sealed box, an air pressure regulating device, two tracks, a plurality of walking blocks and a tension device, wherein the sealed box is arranged adjacently to the two tracks; the sealed box has a through-hole that passes through the sealed box, the through-hole has a hole wall, and the hole wall is hermetically connected with the outer wall of the sealed box to form a hollow sealed box body; the walking blocks are arranged on the tracks; molding parts are arranged on the walking blocks; patterns are arranged on the corresponding molding parts; and the two tracks are arranged adjacently in the vertical direction and can move in the opposite directions. A heat-shrinkable tube passes through the through-hole of the sealed box to prevent the expansion of the heat-shrinkable tube before expansion and die stamping; the heat-shrinkable tube is pulled by the traction device to move forward; the heat-shrinkable tube is expanded through the air pressure regulating device; and the heat-shrinkable tube is die-stamped in the molding parts of the walking blocks through the two tracks that are arranged adjacently in the vertical direction and can move in the opposite directions, so as to achieve the purpose of expansion and die stamping of large-batch continuous heat-shrinkable tubes. Besides, the utility model discloses a die stamping tube which is heated with a result that a die stamping marker disappears. Since the die stamping operation is completed during the expansion of the die stamping tube, the die stamping marker disappears when the die stamping tube is heated to shrink.
Description
Technical field
The utility model relates to a kind of pressing-back apparatus and press back pipe, the press back pipe that the press back sign can disappear when relating in particular to the pressing-back apparatus of pipes such as a kind of heat-shrink tube and being subjected to thermal contraction.
Background technology
It generally is to finish by needle drawing case on printing or the mould that existing heat-shrink tube appearance makes marks, and at present, can make marks by mould for the heat-shrink tube of segmentation, can't realize with the method that mould makes marks for continuous heat-shrink tube.
The utility model content
Main purpose of the present utility model is to provide a kind of device that makes continuous heat-shrink tube with mould expansion and press back.
Another purpose of the present utility model is to provide a kind of press back pipe that the press back sign can disappear when being heated.
For realizing above-mentioned main purpose, the utility model provides a kind of pressing-back apparatus, comprise seal box, barometric control unit, two crawler belts, several carry out piece and draw-gear, described seal box and two crawler belts are contiguous to be provided with, described seal box has the perforation that runs through described seal box, this perforation has hole wall, the outer wall of this hole wall and described seal box is tightly connected, form the seal case of a hollow, several described shoe pieces are located on the described crawler belt, described shoe piece is provided with mold portion, and described mold portion is provided with corresponding pattern, but neighbouring setting of described two crawler belts and move toward one another.
As mentioned above, the perforation that the utility model pressing-back apparatus passes seal box by heat-shrink tube prevents that heat-shrink tube from expanding before expansion and press back, advance by draw-gear traction heat-shrink tube, by barometric control unit heat-shrink tube is expanded, realize the press back of heat-shrink tube by neighbouring setting of two crawler belts and move toward one another, thereby realized the expansion and the press back of the large batch of Continuous Heat draw in the mold portion of carrying out piece.
Preferably, be provided with a separator tube, this separator tube inner hollow tubular design in the contact position of described seal box and described two crawler belts, product heat-shrink tube after can preventing to be heated is expanded too early, guarantee that it expands the good result with press back in follow-up crawler belt, simultaneously, also guaranteed product quality.
Preferably, described separator tube and described seal box are integrally formed.
As further restriction, described barometric control unit is any or its two combination of aerating device, vacuum extractor.
Preferably, be provided with heater in the described seal box, this heater heats the heat-shrink tube in the seal box, guarantees that it expands the good result with press back in follow-up crawler belt.
Preferably, described heater is annular body, this annular body is around hole wall one circle of the perforation of described seal box, thereby the heat-shrink tube in boring a hole is carried out 360 ° around omnibearing heating, increased heating surface (area) (HS to heat-shrink tube, thereby guarantee the thermal effect that adds of heat-shrink tube, make it fully softening, guarantee that it expands the good result with press back in follow-up crawler belt.
Preferably, described two crawler belt junctions are respectively arranged with an anti-sway portion, and this anti-sway can prevent about the crawler belt, swing.
Preferably, described anti-sway is a fixed head, the relative two edges of this fixed head card article that extended internally respectively, and the part of the junction of described crawler belt closes between described two card articles, and described fixed head is close to the part of the junction of crawler belt.
Preferably, the relative two edges of described crawler belt inwardly are provided with a host bar respectively, and described anti-sway is a fixed head, and this fixed head is contained between described two host bars, and this fixed head is close to the part of the junction of crawler belt.
Preferably, described shoe piece is provided with the location division, and when two crawler belts were worked, two carry out pieces located by locating piece, swing or unsettled phenomenon takes place when preventing two crawler belt transmissions, thus guarantee the good result of product augmentation and press back.
Preferably, described shoe piece is provided with magnet, and when two crawler belts were worked, two magnets of carrying out pieces attracted each other, swing or unsettled phenomenon the takes place when attraction by two magnets prevents two crawler belt transmissions, thus guarantee the good result of product augmentation and press back.
Preferably, described each shoe piece is provided with a buckle and a draw-in groove, when two caterpillar drives, buckle on the shoe piece of a described crawler belt stretches in the draw-in groove on the shoe piece of described another crawler belt, when further preventing two crawler belt transmissions the swing or unsettled phenomenon takes place, thereby guarantee the good result of expanding thermal shrinkage tube and press back once more.
Preferably, the described two shoe agllutinations that several are carried out in the piece lump together, and there is the gap in this two edge of carrying out piece, and this gap can make the product press back go out pattern identification.
Preferably, the mold portion on the described shoe piece is a semi-circular groove, and the pattern on the described mold portion is located on the inwall of this semi-circular groove.
Preferably, the mold portion on the described shoe piece is the half elliptic groove, and the pattern on the described mold portion is located on the inwall of this half elliptic groove.
Preferably, after described draw-gear is arranged on described crawler belt press back operation.
For realizing above-mentioned another purpose, the utility model provides a kind of press back pipe, and this press back pipe is formed by above-mentioned any described pressing-back apparatus press back.
The press back pipe that is gone out by the utility model pressing-back apparatus press back is because the press back of this press back pipe is to finish press back when this enlargement of pipe, so the press back sign can disappear when this press back pipe is subjected to thermal contraction.
Description of drawings
Fig. 1 is the front view of the utility model pressing-back apparatus first embodiment, for ease of observing view, has removed the antetheca of seal box;
Fig. 2 is the sectional drawing at the I-I place of pressing-back apparatus shown in Figure 1;
Fig. 3 is the front view of the utility model pressing-back apparatus second embodiment, for ease of observing view, has removed the antetheca of seal box and vacuum extractor;
Fig. 4 is the sectional drawing at the II-II place of pressing-back apparatus shown in Figure 3.
Each description of reference numerals is as follows among the figure:
Pressing-back apparatus 100/100 '
Heater 22 separator tubes 24
Mold portion 411 semi-circular groove 411a
Draw-in groove 44 through holes 45
Fixed head 50 heat-shrink tubes 60
Draw-gear 70
The specific embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
See also Fig. 1 and Fig. 2, it has disclosed first embodiment of the utility model pressing-back apparatus 100, and the utility model pressing-back apparatus 100 comprises a seal box 20, a barometric control unit (not shown), two crawler belts 40, several shoe pieces 41 and draw-gear 70.
Preferably, one heater 22 is set in the seal box 20, this heater 22 can heat the heat-shrink tube 60 of the perforation 21 of passing seal box 20, preferably, this heater 22 is annular body 221, this annular body 221 is around perforated wall one circle of seal box 20, thereby 21 interior heat-shrink tubes 60 carry out 360 ° around omnibearing heating to boring a hole, increased heating surface (area) (HS to heat-shrink tube 60, thereby guarantee the thermal effect that adds of heat-shrink tube 60, make it fully softening, guarantee that it expands the good result with press back in follow-up crawler belt 40, certainly, heater 22 also can be positioned at the below of the heat-shrink tube 60 of seal box 20.
Preferably, be provided with a separator tube 24 in the contact position of seal box 20 and two crawler belts 40, these separator tube 24 inner hollow tubular design, enter in the inner hollow pipe of separator tube 24 through the heat-shrink tube 60 behind the seal box 20, heat-shrink tube 60 after can preventing to be heated is expanded too early, and heat-shrink tube after promptly preventing to heat 60 expanded outwardly before entering two crawler belts 40 behind the seal boxs 20, guarantees that it expand in follow-up crawler belt 40 and the good result of press back, simultaneously, also guaranteed product quality.Certainly, separator tube 24 also can be integrally formed with seal box 20, and for example separator tube 24 can be the extension of the perforation 21 of seal box 20.
Barometric control unit is a kind of device of regulating air pressure, the mode of its adjusting has two kinds: the one, heat-shrink tube 60 is applied positive pressure, at this, barometric control unit is an aerating device (not shown), it is aerating device inflation in heat-shrink tube 60 pipes, increase the air pressure in heat-shrink tube 60 pipes, make the interior air pressure of heat-shrink tube 60 pipes greater than the outer air pressure of heat-shrink tube 60 pipes, thereby heat-shrink tube 60 is expanded outwardly; The 2nd, heat-shrink tube 60 is applied suction function, at this, barometric control unit 30 (shown in Figure 3) is a vacuum extractor 31, promptly add a vacuum extractor 31 at heat-shrink tube 60, air pressure in heat-shrink tube 60 pipes is certain, air pressure in the vacuum extractor 31 diminish, and interior pressure is greater than external pressure, thereby heat-shrink tube 60 is expanded outwardly.In the present embodiment, barometric control unit is a vacuum extractor.
Two crawler belts 40 and seal box 20 contiguous settings, but 40 neighbouring settings of two crawler belts and move toward one another, two crawler belts 40 drive transmission by the wheel of power source supply respectively, carrying out piece 41 is located on the crawler belt 40, carry out piece 41 and be provided with mold portion 411, mold portion 411 is provided with corresponding pattern (not shown), in the present embodiment, the mold portion 411 of carrying out on the piece 41 is semi-circular groove 411a, pattern on the mold portion 411 is located on the inwall of this semi-circular groove 411a, and this pattern can be Chinese character, English alphabet, its other country's character, decorative pattern, lines and other arbitrary graphic patterns.Pattern on the inwall of semi-circular groove 411a can be the convex pattern, also can be female pattern, correspondingly, is identified at heat-shrink tube 60 lip-deep patterns and can be the pattern of spill and the pattern of convex.Certainly, mold portion 411 also can be other shapes according to demand, half elliptic groove for example, and in like manner, the pattern on the mold portion 411 is located on the inwall of this half elliptic groove, and the product that comes out at half elliptic groove intramedullary expansion is oval column.
Carry out piece 41 and be provided with the location division, the location division can be magnet 42, this magnet 42 is located at and is carried out piece 41 1 ends, each is carried out piece 41 and is provided with a buckle 43 and a draw-in groove 44, when two caterpillar drives, wherein in the draw-in groove 44 on the shoe piece 41 of 43 another crawler belts 40 of insertion of the buckle on the shoe piece 41 of a crawler belt 40, carry out the buckle 43 that is provided with on the piece 41 and form location divisions with draw-in groove 44.
Preferably, two crawler belts, 40 junctions are respectively arranged with one anti-sway 50, a card article (not shown) has extended internally respectively in these relative two edges of implementing this fixed head 50, the part of the junction of crawler belt 40 closes between two card articles, to prevent that crawler belt 40 from swinging, fixed head 50 is close to the part of the junction of crawler belt 40, can stop two crawler belts 40 to swing up and down in the junction, with the expansion that guarantees product heat-shrink tube 60 and the good result of press back.Certainly, be not limited to for anti-sway 50 present with the form of fixed head, other are any to prevent that the mode of crawler belt 40 swings is all passable, for example, the relative two edges of crawler belt 40 inwardly are provided with a host bar (not shown) respectively, anti-sway 50 is a fixed head, and this fixed head is contained between two host bars, and this fixed head is close to the part of the junction of crawler belt.Can prevent crawler belt about in the of 50 for anti-sway 50, swing.
The traction of heat-shrink tube 60 is undertaken by draw-gear 70, draw-gear 70 is a prior art, do not repeat them here, traction can be before heat-shrink tube 60 be through crawler belt 40 expansions and press back operation, also can be thereafter, preferably, draw-gear 70 also can be arranged in the seal box 20 after being arranged on crawler belt 40 expansions and press back operation certainly.Certainly, also can draw by two crawler belts 40.
When 100 work of the utility model pressing-back apparatus, the one end sealing of heat-shrink tube 60, the other end is inflated it by aerating device, and aerating device both can be chosen in the starting end of heat-shrink tube 60 to the selection of the inflation end of heat-shrink tube 60, also can be chosen in the receipts pipe end after press back finishes.
In the present embodiment, aerating device is chosen in the starting end of heat-shrink tube 60 to the inflation end of heat-shrink tube 60, and seals the other end of heat-shrink tube.Because this moment, the temperature of heat-shrink tube 60 was room temperatures, on the other hand, the gas that fills begins to flow to the other end of heat-shrink tube 60, and therefore, heat-shrink tube 60 does not outwards carry out expanse.
Heat-shrink tube 60 advances under the traction of two crawler belts 40 or draw-gear 70, if in the seal box 20 heater 22 is arranged, then 22 pairs of perforation 21 interior heat-shrink tubes 60 through seal box 20 of heater heat, to make things convenient for heat-shrink tube 60 at the semi-circular groove 411a of follow-up crawler belt 40 intramedullary expansion and press back pattern identification.Though heat-shrink tube 60 through gas overcharging and and the heating that is subjected to heater 20 seal box 20 in because atmospheric pressure stop the perforation 21 interior heat-shrink tubes 60 that are in seal box 20 to expand outwardly expansion greater than 1 atmospheric pressure in the seal box 20.
Be in the crawler belt 40 counterclockwise transmissions of top, be in the crawler belt 40 clockwise transmissions of below, the transmission speed size of two crawler belts 40 is consistent, preferably, the transmission speed of two crawler belts 40 is consistent with the transmission speed of heat-shrink tube 60, two crawler belts 40 are in transmission, when the shoe piece 41 of two crawler belts 40 is close mutually, divide two magnets 42 of carrying out piece 41 that occupy two crawler belts 40 to attract each other, swing or unsettled phenomenon the takes place when attraction by two magnets 42 prevents 40 transmissions of two crawler belts, thus the good result of heat-shrink tube 60 expansions and press back guaranteed.
Moreover, when the shoe piece 41 of crawler belt 40 contacts, wherein the buckle on the shoe piece 41 of a crawler belt 40 43 inserts in the draw-in groove 44 on the shoe piece 41 of another crawler belts 40, its draw-in groove 44 inserted by the buckle 43 of another crawler belt 40, by carrying out the buckle 43 on the piece 41, the snap-lock of draw-in groove 44, thereby swing or unsettled phenomenon takes place when further preventing 40 transmissions of two crawler belts, thereby guarantee the good result of heat-shrink tube 60 expansion and press back once more.
On the crawler belt 40 anti-sway 50 can stop two crawler belts 40 about the junction, double swerve, with the expansion that guarantees product heat-shrink tube 60 and the good result of press back.
Because aerating device is to inflating in heat-shrink tube 60 pipes, increase the air pressure in heat-shrink tube 60 pipes, make the air pressure in heat-shrink tube 60 pipes manage outer air pressure greater than heat-shrink tube 60, expand thereby make in the semi-circular groove 411a of heat-shrink tube 60 on carrying out piece 41, because heat-shrink tube 60 expansion backs are against the inwall of semi-circular groove 411a, thereby the pattern identification on the inwall of semi-circular groove 411a just has been engraved in the surface of heat-shrink tube 60.Combine between the higher and lower levels together because two carry out piece 41, can there be a gap in the edge of the two, and this gap can make heat-shrink tube 60 press backs go out pattern identification; Simultaneously, carry out piece 41 junctions two, except the shoe piece 41 that combines between the higher and lower levels, also can there be a gap in adjacent in the horizontal direction shoe piece, and this gap can make heat-shrink tube 60 press backs go out pattern identification.Because the temperature of carrying out on the piece 41 is lower than the temperature of heat-shrink tube 60, thereby carry out piece 41 heat-shrink tube after the press back 60 is carried out cooling shaping, in order to accelerate cooling shaping, can cool off crawler belt 40, for example give crawler belt 40 coolings etc. with cold water.
See also Fig. 3 and Fig. 4, it has disclosed second embodiment of the utility model pressing-back apparatus, originally execute routine pressing-back apparatus 100 ' similar with first embodiment, its difference is: the barometric control unit 30 of second embodiment is not an aerating device, but a kind of vacuum extractor 31, crawler belt 40 is arranged in this vacuum extractor 31, the inwall of carrying out the semi-circular groove 411a of piece 41 is provided with several and runs through the through hole 45 of carrying out piece 41, under the effect that vacuumizes, these through holes 45 can make heat-shrink tube 60 expand outwardly, because heat-shrink tube 60 expansion backs are against the inwall of semi-circular groove 411a, thereby the pattern identification on the inwall of semi-circular groove 411a just has been engraved in the surface of heat-shrink tube 60.
The 3rd embodiment of the utility model pressing-back apparatus and first embodiment, second embodiment are all similar, its difference is: the barometric control unit 30 of the 3rd embodiment is aerating devices and the combining of vacuum extractor 31, the aerating device of existing first embodiment has the vacuum extractor 31 of second embodiment again.Equally, aerating device is chosen in the starting end of heat-shrink tube 60 to the inflation end of heat-shrink tube 60, and seals the other end of heat-shrink tube 60; Crawler belt 40 is arranged in this vacuum extractor 31, and the inwall of carrying out the semi-circular groove 411a of piece 41 is provided with several and runs through the through hole 45 of carrying out piece 41.
It is vacuum extractor and vacuum extractor 31 that the 3rd embodiment of the present utility model has two kinds of barometric control units 30, can further guarantee the expansion of heat-shrink tube 60 and the effect of press back.
The perforation 21 that the utility model pressing-back apparatus 100 passes seal box 20 by heat-shrink tube 60 prevents that heat-shrink tube 60 from expanding before expansion and press back, advance by draw-gear 70 traction heat-shrink tubes 60, by barometric control unit 30 heat-shrink tube 60 is expanded, realize the press back of heat-shrink tube 60 by 40 neighbouring settings of two crawler belts and move toward one another, thereby realized the expansion and the press back of the large batch of Continuous Heat draw 60 in the mold portion 411 of carrying out piece 41.
The utility model pressing-back apparatus 100/100 ' the be not limited in expansion and the press back of heat-shrink tube 60, same, also be suitable for the expansion and the identical or similar product of press back of any mechanism and heat-shrink tube 60, for example the press back of electric wire etc.
Press back pipe provided by the utility model, in embodiment of the present utility model, this press back pipe is a heat-shrink tube 60, this heat-shrink tube 60 is formed by above-mentioned pressing-back apparatus 100/100 ' press back.
The press back pipe (heat-shrink tube 60) that goes out by the utility model pressing-back apparatus 100/100 ' press back because the press back of this press back pipe (heat-shrink tube 60) is to finish press back when this enlargement of pipe, so this press back pipe (heat-shrink tube 60) when being subjected to thermal contraction the sign of press back can disappear.
The utility model is not limited to the above-mentioned specific embodiment, and those skilled in the art that also can make multiple variation in view of the above, but any and the utility model are equal to or similar variation all should be encompassed in the scope of the utility model claim.
Claims (17)
1. pressing-back apparatus, comprise seal box, barometric control unit, two crawler belts, several shoe piece and draw-gears, described seal box and two crawler belts are contiguous to be provided with, described seal box has the perforation that runs through described seal box, this perforation has hole wall, the outer wall of this hole wall and described seal box is tightly connected, form the seal case of a hollow, several described shoe pieces are located on the described crawler belt, described shoe piece is provided with mold portion, described mold portion is provided with corresponding pattern, but neighbouring setting of described two crawler belts and move toward one another.
2. pressing-back apparatus as claimed in claim 1 is characterized in that: the contact position at described seal box and described two crawler belts is provided with a separator tube, this separator tube inner hollow tubular design.
3. pressing-back apparatus as claimed in claim 2 is characterized in that: described separator tube and described seal box are integrally formed.
4. pressing-back apparatus as claimed in claim 1 is characterized in that: described barometric control unit is any or its two combination of aerating device, vacuum extractor.
5. pressing-back apparatus as claimed in claim 1 is characterized in that: be provided with heater in the described seal box.
6. pressing-back apparatus as claimed in claim 5 is characterized in that: described heater is annular body, and this annular body is around hole wall one circle of the perforation of described seal box.
7. pressing-back apparatus as claimed in claim 5 is characterized in that: described two crawler belt junctions are respectively arranged with an anti-sway portion.
8. pressing-back apparatus as claimed in claim 7, it is characterized in that: described anti-sway is a fixed head, the relative two edges of this fixed head card article that extended internally respectively, the part of the junction of described crawler belt closes between described two card articles, and described fixed head is close to the part of the junction of crawler belt.
9. pressing-back apparatus as claimed in claim 7, it is characterized in that: the relative two edges of described crawler belt inwardly are provided with a host bar respectively, described anti-sway is a fixed head, and this fixed head is contained between described two host bars, and this fixed head is close to the part of the junction of crawler belt.
10. pressing-back apparatus as claimed in claim 5 is characterized in that: described shoe piece is provided with the location division.
11. pressing-back apparatus as claimed in claim 10 is characterized in that: described location division is a magnet.
12. pressing-back apparatus as claimed in claim 10, it is characterized in that: described each shoe piece is provided with a buckle and a draw-in groove, when two caterpillar drives, buckle on the shoe piece of a described crawler belt stretches in the draw-in groove on the shoe piece of described another crawler belt, and the buckle and the draw-in groove that are provided with on the described shoe piece form described location division.
13. pressing-back apparatus as claimed in claim 1 is characterized in that: the described two shoe agllutinations that several are carried out in the piece lump together, and there is the gap in this two edge of carrying out piece.
14. pressing-back apparatus as claimed in claim 1 is characterized in that: the mold portion on the described shoe piece is a semi-circular groove, and the pattern on the described mold portion is located on the inwall of this semi-circular groove.
15. pressing-back apparatus as claimed in claim 1 is characterized in that: the mold portion on the described shoe piece is the half elliptic groove, and the pattern on the described mold portion is located on the inwall of this half elliptic groove.
16. pressing-back apparatus as claimed in claim 1 is characterized in that: after described draw-gear is arranged on described crawler belt press back operation.
17. a press back pipe is characterized in that: this press back pipe is formed by any pressing-back apparatus press back in the claim 1 to 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202810744U CN201833662U (en) | 2010-07-20 | 2010-07-20 | Die stamping device and die stamping tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202810744U CN201833662U (en) | 2010-07-20 | 2010-07-20 | Die stamping device and die stamping tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201833662U true CN201833662U (en) | 2011-05-18 |
Family
ID=44003756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202810744U Expired - Lifetime CN201833662U (en) | 2010-07-20 | 2010-07-20 | Die stamping device and die stamping tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201833662U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336076A (en) * | 2010-07-20 | 2012-02-01 | 深圳市沃尔核材股份有限公司 | Stamping device and stamping pipe |
| CN103105137A (en) * | 2011-12-28 | 2013-05-15 | 深圳市沃尔核材股份有限公司 | Stretch testing method |
-
2010
- 2010-07-20 CN CN2010202810744U patent/CN201833662U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336076A (en) * | 2010-07-20 | 2012-02-01 | 深圳市沃尔核材股份有限公司 | Stamping device and stamping pipe |
| CN103105137A (en) * | 2011-12-28 | 2013-05-15 | 深圳市沃尔核材股份有限公司 | Stretch testing method |
| CN103105137B (en) * | 2011-12-28 | 2016-08-03 | 深圳市沃尔核材股份有限公司 | A kind of stretching detection method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110518 Effective date of abandoning: 20130522 |
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| RGAV | Abandon patent right to avoid regrant |