CN105251819B - Bending and blanking device - Google Patents
Bending and blanking device Download PDFInfo
- Publication number
- CN105251819B CN105251819B CN201510793534.9A CN201510793534A CN105251819B CN 105251819 B CN105251819 B CN 105251819B CN 201510793534 A CN201510793534 A CN 201510793534A CN 105251819 B CN105251819 B CN 105251819B
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- China
- Prior art keywords
- hole
- pedestal
- boss
- pipe fitting
- bending
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The invention discloses a bending and blanking device. The device comprises a base (1), wherein the base (1) is provided with a reference surface (3) for placing a free end of a pipe (2) and rotating the free end of the pipe (2); the base (1) is provided with a boss (4) higher than the reference surface (3) for positioning the other end of the pipe (2); the boss (4) is provided with an opening (5) for accommodating the end part of the pipe (2); the base (1) is provided with a through hole (6) for sliding the bent pipe (2) in the vertical direction; the shape of the through hole (6) is consistent with the bending shape of the pipe (2); and the through hole (6) penetrates through the upper surface and the lower surface of the base (1) in the vertical direction, and is communicated with the opening (5) in the vertical direction. The invention provides the bending and blanking device with low maintenance cost, simple operation and no need of manual pipe taking.
Description
Technical field
The present invention relates to pipe fitting brake techniques field, more particularly to a kind of device for bending blanking.
Background technology
Currently, the bending machine on market mainly includes CNC tube bending machine, hydraulic pipe bender etc., in the bending machine of prior art
Generally existing maintenance cost is high, the problem of complex operation.Additionally, in prior art bending machine need one by one to be placed into pipe fitting it is curved
In pipe machine, also the pipe fitting of forming to be taken out one by one after pipe fitting bending, therefore during taking-up, if there is work in bender
Make unreliable problem to be easy for causing industrial injury to the operating personnel of taking-up, that is to say, that bending machine of the prior art is also present
Due to needing manually to take the safety problem managed and cause.
The content of the invention
The technical problem to be solved in the present invention is to overcome existing technological deficiency, there is provided a kind of maintenance cost is low, operation letter
Just and without the need for manually take the device for bending blanking of pipe.
The technical solution of the present invention is to provide a kind of device for bending blanking with following structure：Including
Pedestal, pedestal is provided with the datum level for placing pipe fitting free end and rotate for pipe fitting free end, and pedestal is provided with higher than base
The boss that quasi- face positions for pipe fitting the other end, boss is provided with the opening for housing pipe fitting end；Described pedestal
Shape after the through hole that pipe fitting after being vertically provided with for bending vertically slides, shape of through holes and pipe fitting bending
Unanimously, through hole vertically insertion pedestal upper surface and lower surface and through hole vertically with open communication, through hole includes
First through hole and the second through hole positioned at outside the boss immediately below boss, first through hole and the second through hole are logical by arc
Hole connects；It is used for the side-walls of the perpendicular and close boss side on the second through hole intersected with datum level on boss in same
On perpendicular；Slidably connect on described pedestal and extracted to release with support tubes one end or from through hole for stretching into through hole
Straight pin to the constraint of pipe fitting one end, straight pin is arranged in boss position directly below, and straight pin top edge and datum level
In same level；The blind hole that described pedestal is provided with accommodating straight pin and slides for straight pin, straight pin and blind hole
The first extension spring is provided between bottom, straight pin is extended with slide bar towards pedestal outside, and sliding bar is connected in pedestal and on slide bar
It is provided with linear gear rack；A pair intermeshing first gears and second gear, first gear are rotatably connected in described pedestal
With the linear gear rack engaged transmission on slide bar；Ratchet, ratchet one end and second gear clamping or disengagement are rotatably connected on pedestal,
And it is connected with the second extension spring being connected to for ratchet in second gear between the end of second gear and pedestal on ratchet；
On boss near perpendicular region slidably connect for bending after pipe fitting push against push rod, boss be provided with for
Accommodating push rod and the stepped hole slided for push rod, push rod periphery wall is provided with annular protrusion, on the step surface and push rod of stepped hole
Annular protrusion between be provided with stage clip, nut is combined with stepped hole opening the annular protrusion on push rod is locked at into stepped hole
Interior, the end on push rod one end and ratchet away from second gear pushes against, and the other end stretches out boss or is contracted in boss；Described
It is rotatably connected on pedestal for pipe fitting to be bent into into the flap consistent with shape of through holes, flap is included for moulding pipe bending
The curved portions in region and the line part for moulding pipe linearity region, are connected with the hydraulic pressure for driving flap to rotate on pedestal
Lathe, the drift on hydraulic machine is contacted with the line part on flap, and is connected between the line part and pedestal on flap
Three extension springs；Described pedestal is provided with stopping means spacing when resetting for flap.
The present invention is placed in the opening on boss by pipe fitting one end, and the other end is lain in a horizontal plane on datum level, so
Just a rectilinear pipe fitting can be positioned；Wherein, the pipe fitting end lower section in opening is carried out by straight pin
Support limit；Subsequently, the drift work on hydraulic machine is to drive flap to rotate, and then flap is bent into pipe fitting and through hole
The consistent shape of shape, i.e. pipe fitting one end in the opening on boss, are close to perpendicular on boss all the time after other end bending
In straight plane；Pipe fitting bending near the perpendicular of boss when, push rod can be promoted to slide for pipe fitting inner wall so that ratchet and the
Two are out of gear, that is, release constraint of the ratchet to second gear；Subsequently straight pin is contracted to blind hole under the drive of the first extension spring
Interior is in vacant state so as to relieve supporting role of the straight pin for pipe fitting, i.e. pipe fitting after bending；At the same time, flap exists
Reset under the drive of the 3rd extension spring, so as to the pipe fitting after bending just can fall along the inwall of through hole.Whole pipe fitting bending
Cheng Zhong, operating personnel only need to that pipe fitting is placed on pedestal, in pipe fitting Forging Process, the pipe fitting after bending can also be entered
Row automatic blanking, it is not necessary to which hand is extend into pedestal top and operated to the pipe fitting after bending by operating personnel, i.e., whole bending
Process is very easy for the operation requirement of operating personnel, and without the need for manually take pipe, increased pipe fitting bending for operating personnel
Security；Further, the parts involved by structure of the invention are all a little simple parts, and gear, tooth bar are all standard components
Can directly be buied with market, the parts such as pedestal, flap, straight pin are all simple structure, the low cost of production and processing, that is,
Say, these parts otherwise be exactly that purchase cost is low, or being exactly low production cost, so the structure in the present invention is tieed up in the future
The cost of shield is also decreased.Additionally, it is same by the setting of limited block flap can be caused to be in after resetting every time
One position, can prevent flap from crossing outside pedestal after resetting, that is, ensure flap to be contracted in the range of pedestal and rotate.Cause
This, it is low, easy to operate and without the need for manually take the device for bending blanking of pipe that the present invention provides a kind of maintenance cost.
Preferably described stopping means is referred to and be fixedly connected with pedestal multiple limited blocks as a kind of, limited block with turn
Side wall on plate away from pipe fitting is pushed against or disengaged.It is preferred by this, it is ensured that flap is located in the range of pedestal and rotates.
Preferably described limited block has two as a kind of, and two limited blocks push against with line part on flap simultaneously or
Depart from.By this preferably, active force of the flap to each limited block can be reduced so that each limited block can divide equally plate of turning round
Active force to limited block.
As one kind preferably, described slide bar is slidably connected in pedestal by dovetail groove.It is preferred by this, it is ensured that
Slide bar will not depart from sliding process from pedestal, and oat tail groove structure not only can play guide effect to the slip of slide bar,
Play spacing effect can also to the slip slided.
As one kind preferably, the first described extension spring is socketed on slide bar, and first extension spring one end and straight pin and slide bar
Junction connection, the other end is connected with hole bottom.It is preferred by this, it is ensured that the first extension spring stress in deformation process
Uniformly, it is ensured that the first extension spring two ends respectively with cylinder pin connection, the other end is connected with blind via bottom, improves the reliability of extension spring work
Property.
It is connected with the end on ratchet near second gear as second a kind of preferred, described extension spring one end, the other end
It is connected with pedestal.It is preferred by this, it is ensured that the tension spring tension of ratchet hand second act on and with second gear clamping, prevent second
Gear is inverted.
As one kind preferably, described straight pin has two, and two straight pins are in same level, two cylinders
Pin constitutes a U-shaped structure with slide bar end.The pipe fitting strong point along its length can preferably be increased by this, expand cylinder
Sell the length range that pipe fitting is supported so that pedestal is relatively reliable for the support of pipe fitting.
Description of the drawings
Fig. 1 is the partial sectional view of the present invention.
Fig. 2 is top view when pipe fitting is not placed in the present invention.
Fig. 3 is the structural representation of pedestal in the present invention.
Fig. 4 is the top view when pipe fitting not being bent over is placed in the present invention.
Fig. 5 is that the top view for being bent over rear tubular member is placed in the present invention.
Fig. 6 is the structural representation of another angle of pedestal in the present invention.
Shown in figure：1st, pedestal, 2, pipe fitting, 3, datum level, 4, boss, 5, opening, 6, through hole, 7, perpendicular, 8, side
Wall, 9, straight pin, the 10, first extension spring, 11, blind hole, 12, slide bar, 13, linear gear rack, 14, push rod, 15, stepped hole, 16, annular
Projection, 17, first through hole, the 18, second through hole, 19, arc-shaped through-hole, 20, nut, 21, flap, 22, curved portions, 23, line part,
24th, drift, 25, first gear, 26, second gear, 27, ratchet, the 28, second extension spring, the 29, the 3rd extension spring, 30, stage clip, 31, limit
Position block.
Specific embodiment
With reference to the accompanying drawings and detailed description the invention will be further described.
As illustrated, the operation principle of the present invention：First, slide bar is first promoted, is led to until cylinder pin end abuts to first
Hole inwall, can strut the first extension spring during one side sliding bar, another aspect slide bar by linear gear rack and first gear,
The transmission of second gear can stir ratchet and periodically rotate around a direction, and ratchet is in the presence of the second extension spring, can
To be connected in second gear all the time, in case on-slip bar automatically resets；Subsequently pipe fitting one end of non-bending is placed on boss
Opening in and positioned at the top of straight pin, the other end lies in a horizontal plane in the datum level on pedestal, as shown in Figure 4；
Then, the drift on hydraulic machine works to drive flap to rotate, so as to be bent into pipe fitting and shape of through holes one
Cause, as shown in Figure 5；In flap rotation process, the 3rd extension spring can be also pulled open so that the 3rd extension spring deformation resets to lay in flap
Required active force；Resilience or plastic deformation can occur, drift can be held to the active force of flap after in order to prevent pipe fitting bending
Continuous a period of time, such as 1～3min specifically continues how long to see depending on pipe fitting made by concrete what material；
Wherein, in pipe fitting Forging Process, once pipe fitting inner wall and the push rod ends contact of perpendicular position on boss, manage
Part will push push rod slip；So push rod will promote pawl rotation to release constraint of the ratchet to second gear；Subsequently, circle
Pin can slide under the pulling force effect of the first extension spring, and depart from from first through hole, be contracted in blind hole, that is, it is right to relieve
Pipe fitting is located at the supporting role of open area；
At the same time, drift can also terminate the active force to flap and retracted for clearance, pulling force of the flap in the 3rd extension spring
Reset can be rotated backward under effect；And, after flap resets after resetting every time all in same position, i.e. flap, on flap
The outer wall of line part is resisted against on limited block；
Finally, the both supporting roles without straight pin of the pipe fitting after bending, the also pressure without flap, after bending
Pipe fitting can slide along the inwall of through hole, i.e., the pipe fitting after bending and the datum level on pedestal and boss depart from.
The present invention includes pedestal 1 for the device of bending blanking, and pedestal 1 is provided with for placing the free end of pipe fitting 2 and confession
The datum level 3 that the free end of pipe fitting 2 rotates, pedestal 1 is provided with the boss positioned for the other end of pipe fitting 2 higher than datum level 3
4, boss 4 is provided with the opening 5 for housing the end of pipe fitting 2；Described pedestal 1 be vertically provided with for bending after pipe
The through hole 6 that part 2 vertically slides, the shape of through hole 6 is consistent with the shape after the bending of pipe fitting 2, the vertically insertion of through hole 6
The upper and lower surface of pedestal 1 and through hole 6 is vertically connected with opening 5, through hole 6 includes being located at the immediately below boss 4
One through hole 17 and the second through hole 18 positioned at the outside of boss 4, first through hole 17 is connected with the second through hole 18 by arc-shaped through-hole 19；
It is used for the side wall 8 of the perpendicular 7 and close side of boss 4 on the second through hole 18 intersected with datum level 3 on boss 4 in same
On perpendicular；Slidably connect on described pedestal 1 for stretch into through hole 6 with the one end of support tubes 2 or from through hole 6 extract with
The straight pin 9 to the constraint of the one end of pipe fitting 2 is released, straight pin 9 is arranged in the position directly below of boss 4, and the top edge of straight pin 9
With datum level 3 in same level；The blind hole that described pedestal 1 is provided with accommodating straight pin 9 and slides for straight pin 9
11, the first extension spring 10 is provided between straight pin 9 and the bottom of blind hole 11, straight pin 9 is extended with slide bar 12, slide bar towards the outside of pedestal 1
12 are slidably connected in pedestal 1 and slide bar 12 is provided with linear gear rack 13；A pair are rotatably connected in described pedestal 1 mutually to nibble
The engaged transmission of linear gear rack 13 on the first gear 25 and second gear 26 of conjunction, first gear 25 and slide bar 12；Turn on pedestal 1
It is dynamic to be connected with ratchet 27, near the end of second gear 26 on the one end of ratchet 27 and the clamping of second gear 26 or disengagement, and ratchet 27
The second extension spring 28 being connected to for ratchet 27 in second gear 26 is connected between portion and pedestal 1；Near vertically flat on boss 4
The region in face 7 slidably connect for bending after the push rod 14 that pushes against of pipe fitting 2, boss 4 is provided with for housing push rod 14
And for the stepped hole 15 that push rod 14 slides, the periphery wall of push rod 14 is provided with annular protrusion 16, the step surface and push rod of stepped hole 15
Stage clip 30 is provided between annular protrusion 16 on 14, nut 20 is combined with the opening of stepped hole 15 with by the convex annular on push rod 14
Play 16 to be locked in stepped hole 15, the end on the one end of push rod 14 and ratchet 27 away from second gear 26 pushes against, and the other end stretches out
Boss 4 is contracted in boss 4；It is rotatably connected on described pedestal 1 consistent with the shape of through hole 6 for pipe fitting 2 to be bent into
Flap 21, flap 21 includes for the curved portions 22 of the bending region of moulding pipe 2 and for the straight of the linearity region of moulding pipe 2
Line portion 23, is connected with the hydraulic machine for driving flap 21 to rotate, on the drift 24 on hydraulic machine and flap 21 on pedestal 1
Line part 23 contact, and be connected with the 3rd extension spring 29 between the line part 23 and pedestal 1 on flap 21；On described pedestal 1
It is provided with stopping means spacing when resetting for flap 21.
Described stopping means refers to and multiple limited blocks 31 is fixedly connected with pedestal 1, carries on the back on limited block 31 and flap 21
Push against or disengage from the side wall of pipe fitting 2.
Described limited block 31 has two, and two limited blocks 31 are pushed against or departed from line part 23 on flap 21 simultaneously,
That is the line of two limited blocks 31 overlaps with the outer wall of line part 23 on flap 21.
Described slide bar 12 is slidably connected in pedestal 1 by dovetail groove.Described being slidably connected by dovetail groove is referred to
The raised line of dove-tail form can be set on slide bar 12, and the dove-tail form chute slided for dove-tail form raised line can be set on pedestal 1, from
And slide bar 12 both can slide along the length direction of chute, and, the raised line of dove-tail form is will not be from the perpendicular of dove-tail form chute
To disengaging, dove-tail form raised line can only slip away from the both ends of dove-tail form chute.
The first described extension spring 10 is socketed on slide bar 12, and the one end of the first extension spring 10 and straight pin 9 and the company of slide bar 12
Place's connection is connect, the other end is connected with the bottom hole of blind hole 11.
Described one end of the second extension spring 28 be connected with ratchet 27 near the end of second gear 26, the other end and pedestal 1
Connection.
Described straight pin 9 has two, and two straight pins 9 are in same level, two straight pins 9 and slide bar 12
End constitutes a U-shaped structure, as shown in Figure 1.Wherein, the particular number of straight pin 9 can be had depending on actual conditions
The plus-minus of body.
Presently preferred embodiments of the present invention is the foregoing is only, protection scope of the present invention is not intended to limit.It is all at this
Within bright claim, any modification, equivalent and improvement for being made etc., should be included in protection scope of the present invention it
It is interior.
Claims (7)
1. a kind of device for bending blanking, it is characterised in that：It includes pedestal (1), and pedestal (1) is provided with for placing pipe
Part (2) free end and for pipe fitting (2) free end rotate datum level (3), pedestal (1) be provided with higher than datum level (3) for
The boss (4) of pipe fitting (2) the other end positioning, boss (4) is provided with the opening (5) for housing pipe fitting (2) end；Described
Pedestal (1) be vertically provided with for bending after the through hole (6) that vertically slides of pipe fitting (2), through hole (6) shape with
Shape after pipe fitting (2) bending is consistent, through hole (6) vertically insertion pedestal (1) upper and lower surface and through hole (6) edge
Vertical direction is connected with opening (5), and through hole (6) includes the first through hole (17) immediately below boss (4) and positioned at boss (4)
Second through hole (18) in outside, first through hole (17) is connected with the second through hole (18) by arc-shaped through-hole (19)；Boss is used on (4)
Side wall (8) on the perpendicular (7) intersected with datum level (3) with the second through hole (18) near boss (4) side is in same
On one perpendicular；Slidably connect on described pedestal (1) for stretching into through hole (6) with support tubes (2) one end or from logical
Hole (6) is extracted to release the straight pin (9) to the constraint of pipe fitting (2) one end, and straight pin (9) is arranged in immediately below boss (4)
Position, and straight pin (9) top edge and datum level (3) are in same level；Described pedestal (1) is provided with accommodating cylinder
Pin (9) and the blind hole (11) slided for straight pin (9), are provided with the first extension spring (10) between straight pin (9) and blind hole (11) bottom,
Straight pin (9) is extended with slide bar (12) towards pedestal (1) outside, and slide bar (12) is slidably connected in pedestal (1) and on slide bar (12)
It is provided with linear gear rack (13)；A pair intermeshing first gears (25) and the second tooth are rotatably connected in described pedestal (1)
Linear gear rack (13) engaged transmission on wheel (26), first gear (25) and slide bar (12)；Pedestal is rotatably connected to ratchet on (1)
(27), near the end of second gear (26) in ratchet (27) one end and second gear (26) clamping or disengagement, and ratchet (27)
The second extension spring (28) being connected to for ratchet (27) in second gear (26) is connected between pedestal (1)；Boss is leaned on (4)
The region of nearly perpendicular (7) slidably connect for bending after the push rod (14) that pushes against of pipe fitting (2), boss sets on (4)
There is the stepped hole (15) for housing push rod (14) and slide for push rod (14), push rod (14) periphery wall is provided with annular protrusion
(16) stage clip (30), stepped hole (15), are provided between the annular protrusion (16) on the step surface of stepped hole (15) and push rod (14)
Nut (20) is combined with opening so that the annular protrusion (16) on push rod (14) is locked in stepped hole (15), push rod (14)
End on end and ratchet (27) away from second gear (26) pushes against, and the other end stretches out boss (4) or is contracted in boss (4)；
It is rotatably connected on described pedestal (1) for pipe fitting (2) to be bent into into the flap (21) consistent with through hole (6) shape, flap
(21) curved portions (22) and the line part for moulding pipe (2) linearity region for moulding pipe (2) bending region are included
(23) hydraulic machine for driving flap (21) to rotate, the drift (24) and flap on hydraulic machine, are connected with pedestal (1)
(21) line part (23) contact on, and it is connected with the 3rd extension spring between the line part (23) and pedestal (1) on flap (21)
(29)；Described pedestal (1) is provided with stopping means spacing when resetting for flap (21).
2. the device for bending blanking according to claim 1, it is characterised in that：Described stopping means refers to pedestal
(1) multiple limited blocks (31) are fixedly connected with, the side wall on limited block (31) and flap (21) away from pipe fitting (2) is pushed against or de-
Open.
3. the device for bending blanking according to claim 2, it is characterised in that：Described limited block (31) has two
It is individual, and two limited blocks (31) with line part (23) on flap (21) while pushing against or departing from.
4. the device for bending blanking according to claim 1, it is characterised in that：Described slide bar (12) is by dovetail
Groove is slidably connected in pedestal (1).
5. the device for bending blanking according to claim 1, it is characterised in that：Described the first extension spring (10) socket
On slide bar (12), and the first extension spring (10) one end is connected with the junction of straight pin (9) and slide bar (12), the other end and blind hole
(11) bottom hole connection.
6. the device for bending blanking according to claim 1, it is characterised in that：Described the second extension spring (28) one end
It is connected with the end on ratchet (27) near second gear (26), the other end is connected with pedestal (1).
7. the device for bending blanking according to claim 1, it is characterised in that：Described straight pin (9) has two,
And two straight pins (9) are in same level, two straight pins (9) constitute a U-shaped structure with slide bar (12) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510793534.9A CN105251819B (en) | 2015-11-18 | 2015-11-18 | Bending and blanking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510793534.9A CN105251819B (en) | 2015-11-18 | 2015-11-18 | Bending and blanking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105251819A CN105251819A (en) | 2016-01-20 |
| CN105251819B true CN105251819B (en) | 2017-05-10 |
Family
ID=55091915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510793534.9A Expired - Fee Related CN105251819B (en) | 2015-11-18 | 2015-11-18 | Bending and blanking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105251819B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109967575A (en) * | 2019-04-29 | 2019-07-05 | 奥克坦姆系统科技（苏州）有限公司 | A kind of shape extrusion tooling |
| CN112692118B (en) * | 2020-12-24 | 2023-09-01 | 山东佳佳家居用品有限公司 | Rolling device for round iron barrel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201609727U (en) * | 2010-01-26 | 2010-10-20 | 安徽中鼎金亚汽车管件制造有限公司 | Pneumatic oil pipe bending tooling |
| CN103658398A (en) * | 2013-12-06 | 2014-03-26 | 乔登卫浴(江门)有限公司 | Forming die used for thin walled pipe faucet water outlet nozzle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2784344B2 (en) * | 1996-05-31 | 1998-08-06 | 吉久 太田 | Method for producing water discharge pipe and press device used for production thereof |
| JP2008149344A (en) * | 2006-12-15 | 2008-07-03 | Toyota Motor Corp | Device and method for bending tubular member |
| JP5616877B2 (en) * | 2011-11-22 | 2014-10-29 | 株式会社神戸製鋼所 | Bending method of aluminum alloy hollow extruded section, aluminum alloy hollow extruded section and automobile battery frame manufacturing method using this method, automobile battery frame and seat frame structure manufacturing method, and seat frame structure |
-
2015
- 2015-11-18 CN CN201510793534.9A patent/CN105251819B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201609727U (en) * | 2010-01-26 | 2010-10-20 | 安徽中鼎金亚汽车管件制造有限公司 | Pneumatic oil pipe bending tooling |
| CN103658398A (en) * | 2013-12-06 | 2014-03-26 | 乔登卫浴(江门)有限公司 | Forming die used for thin walled pipe faucet water outlet nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105251819A (en) | 2016-01-20 |
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Granted publication date: 20170510 Termination date: 20211118 |