CN104174764A - Pipe bending mold and pipe bending technology - Google Patents
Pipe bending mold and pipe bending technology Download PDFInfo
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- CN104174764A CN104174764A CN201410340541.9A CN201410340541A CN104174764A CN 104174764 A CN104174764 A CN 104174764A CN 201410340541 A CN201410340541 A CN 201410340541A CN 104174764 A CN104174764 A CN 104174764A
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- patrix
- bend pipe
- counterdie
- push rod
- fork
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Abstract
The invention provides a pipe bending mold. The pipe bending mold comprises an upper mold and a lower mold, wherein the upper mold comprises an upper mold plate, an elastic limit ejecting rod, an upper mold swing rod and an upper mold bending block; the lower mold comprises a lower mold plate, a lower mold seat and a lower mold swing arm. The invention further provides a pipe bending technology. With the adoption of the pipe bending mold and the pipe bending technology, pipes can be bent into bent pipes with small deformation efficiently.
Description
Technical field
The present invention relates to a kind of mould, relate in particular to a kind of bend pipe mould for bending tubing and bend pipe pressing process.
Background technology
Metal pipe material is hollow form; according to user demand; conventionally can carry out bending operation to tubing; hollow feature due to tubing; existing swan neck system was out of shape conference and caused tubing unstability in bending tubing; tubing distortion not can cause bending part bounce-back, does not reach desirable bending effect.
Simultaneously, when the bending technique more complicated of tubing and bending angle are had relatively high expectations, for example two bending angle of tubing had both required then two reverse side bending again of positive bending, existing swan neck system produce a finished product need to through four times repeatedly bending just can reach the angle requirement of part, consuming time longer.
Summary of the invention
The present invention aims to provide a kind of bend pipe mould and bend pipe pressing process, and the bending efficiently of this bend pipe mould goes out to be out of shape little bend pipe, for achieving the above object, the invention provides following technical scheme:
A bend pipe mould, comprises upper die and lower die, and described patrix comprises cope match-plate pattern, elastic spacing push rod, patrix fork, patrix press-bending piece; Described counterdie comprises lower bolster, die shoe, bend pipe wheel, counterdie swing arm;
Described elastic spacing push rod is located at the middle part of cope match-plate pattern below; Described elastic spacing push rod below is provided with holding pad; Described patrix fork is located at elastic spacing push rod both sides, and the upper end of patrix fork is connected with cope match-plate pattern by rotating shaft, and patrix fork can swing around the shaft; Described patrix press-bending piece is connected with the lower end of patrix fork by rotating shaft, and patrix press-bending piece can swing around the shaft; Described patrix press-bending piece bottom is wrinkle resistant of patrix;
Described die shoe is located at lower bolster middle part; Both sides to the side of described die shoe upper surface is provided with locating slot, and the middle part of die shoe upper surface is provided with stopper slot; Holding pad on described stopper slot and elastic spacing push rod cooperatively interacts, its cooperation shape and size with need the shape and size of tubing of compacting corresponding; Described locating slot is circular arc, and locating slot is corresponding with the shape and size of the tubing that needs to suppress; Described counterdie swing arm is connected with the both sides of die shoe by rotating shaft, can swing around the shaft; Described counterdie swing arm is provided with wrinkle resistant of counterdie upwards, and wrinkle resistant of described counterdie cooperatively interacts with wrinkle resistant of patrix, and the geomery after its cooperation is corresponding with the shape and size of the tubing that needs to suppress; Between described counterdie swing arm and lower bolster, be provided with elastic limit device.
Described locating slot and stopper slot cooperatively interact, and form the groove corresponding with the shape and size of tubing that need compacting on die shoe, make tubing accurate location in mould, and the stability while ensureing follow-up compacting.
Preferably, in above-mentioned bend pipe mould, described elastic spacing push rod comprises elastic pressurized parts and push rod; Described elastic pressurized parts top is installed on cope match-plate pattern middle part, and bottom is connected with push rod; Described push rod can be under the effect of elastic pressurized parts, along the axial stretching of elastic pressurized parts.
Preferably, in above-mentioned bend pipe mould, on described push rod to the third side of mould to extending support; Between described support and cope match-plate pattern, be provided with adjusting nut.
Preferably, in above-mentioned bend pipe mould, the both sides of described cope match-plate pattern are provided with patrix limited post, and described patrix limited post is for limiting the swing position laterally of patrix fork.
Preferably, in above-mentioned bend pipe mould, described stopper slot, holding pad, wrinkle resistant of patrix and wrinkle resistant of counterdie are semicircle column type, and the internal diameter of its semicolumn is consistent with the external diameter of the pipe that needs to suppress.
Preferably, in above-mentioned bend pipe mould, described elastic limit device is spring.
Preferably, in above-mentioned bend pipe mould, described elastic limit device is gas spring.
Preferably, the both sides of described die shoe are provided with bend pipe wheel, described locating slot is opened in the centre that bend pipe is taken turns circumference.The advantage that bend pipe wheel is set is that the locating slot on bend pipe wheel can arbitrarily adjust, by bend pipe, take turns the position of installing and adjust, can control easily the bending angle of tubing, or take turns by changing the bend pipe of different-diameter specification, with also can control bending angle, control mode is more flexible convenient.At this moment, the rotating shaft that described counterdie swing arm is connected with die shoe can be located at the position, the center of circle of bend pipe wheel.
Preferably, in above-mentioned bend pipe mould, the two ends of described counterdie swing arm are provided with plug adjusting nut.
Preferably, in above-mentioned bend pipe mould, described die shoe both sides are provided with counterdie swing arm limited post, the swing position that the swing arm of restriction counterdie makes progress.
The present invention also provides a kind of bend pipe pressing process, comprises the following steps:
A. tubing is dropped in bend pipe mould, make it be placed in the stopper slot on die shoe;
B. cope match-plate pattern drive elastic spacing push rod and patrix fork are descending, and patrix fork drives patrix press-bending piece descending, and the holding pad on elastic spacing push rod and stopper slot cooperatively interact and push down tubing middle part;
When C. patrix fork two ends can move downward with patrix, swing around the shaft respectively, drive patrix press-bending piece swings around the shaft wrinkle resistant of the patrix making on patrix press-bending piece and slides and suppress on pipe;
D. during patrix press-bending piece compacting tubing, drive counterdie swing arm around the shaft to lower swing, make wrinkle resistant of patrix join to forming with locating slot and bend curve, wrinkle resistant of patrix coordinates edge to bend curve slip to suppress bend pipe with locating slot.
From technique scheme, can find out, bend pipe mould provided by the invention and bend pipe pressing process, by patrix fork, drive the downward pressed bend of patrix press-bending piece, counterdie swing arm, patrix press-bending piece parallel and are identical with the bending angle of bend pipe with the angle of horizontal direction, make patrix press-bending piece according to bending angle requirement, slide and suppress on pipe, thereby bending efficiently go out to be out of shape little bend pipe.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of bend pipe mould of the present invention;
Fig. 2 is the structural representation that die shoe of the present invention is offered locating slot;
Fig. 3 is the perspective view of bend pipe wheel of the present invention;
Fig. 4 starts the structural representation of locating slot on bend pipe wheel of the present invention.
Sequence number in Fig. 1-3 and each several part structure and title are as follows:
1, lower bolster; 2, patrix; 3, die shoe; 4, bend pipe wheel; 5, counterdie; 6, cope match-plate pattern; 7, elastic spacing push rod; 8, holding pad; 9, adjusting nut; 10, rotating shaft; 11, patrix fork; 12, patrix is wrinkle resistant; 13, patrix limited post; 14, patrix press-bending piece; 15, counterdie swing arm limited post; 16, counterdie is wrinkle resistant; 17, counterdie swing arm; 18, plug adjusting nut; 19, elastic limit device; 20, stopper slot; 21, locating slot; 22, elastic pressurized parts; 23, push rod; 24, support.
The specific embodiment
The invention discloses a kind of bend pipe mould, the bending efficiently of this bend pipe mould goes out to be out of shape little bend pipe.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 3, Fig. 1 is the structural representation of bend pipe mould of the present invention.
A bend pipe mould, comprises patrix 2 and counterdie 5, and described patrix 2 comprises cope match-plate pattern 6, elastic spacing push rod 7, patrix fork 11, patrix press-bending piece 14; Described counterdie 5 comprises lower bolster 1, die shoe 3, counterdie swing arm 17;
Described elastic spacing push rod 7 is located at the middle part of cope match-plate pattern 6 belows; Described elastic spacing push rod 7 belows are provided with holding pad 8; Described patrix fork 11 is located at elastic spacing push rod 7 both sides, and the upper end of patrix fork 11 is connected with cope match-plate pattern 6 by rotating shaft 10, and patrix fork 11 can swing 10 around the shaft; Described patrix press-bending piece 14 is connected with the lower end of patrix fork 11 by rotating shaft 10, and patrix press-bending piece 14 can 10 swing around the shaft; Described patrix press-bending piece 14 bottoms are wrinkle resistant 12 of patrix;
Described die shoe 3 is located at lower bolster 1 middle part; Both sides to the side of described die shoe 3 upper surfaces is provided with locating slot 21, and die shoe 3 middle parts, upper surface are provided with stopper slot 20; Described stopper slot 20 cooperatively interacts with the holding pad 8 on elastic spacing push rod 7, its cooperation shape and size corresponding with the shape and size of the tubing that needs to suppress; Described locating slot 21 is circular arc, and locating slot 21 is corresponding with the shape and size of the tubing that needs to suppress; Described counterdie swing arm 17 is connected with the both sides of die shoe (3) by rotating shaft 10, can 10 swing around the shaft; Described counterdie swing arm 17 is provided with wrinkle resistant 16 of counterdie upwards, and wrinkle resistant 16 of described counterdie cooperatively interacts with wrinkle resistant 12 of patrix, and the geomery after its cooperation is corresponding with the shape and size of the tubing that needs to suppress; Between described counterdie swing arm 17 and lower bolster 1, be provided with elastic limit device 19.
When the bend pipe mould that the embodiment of the present invention provides is used, tubing is dropped in bend pipe mould, and at tubing two ends, insert plug, for controlling forming parts, start lathe descending button, platen drive holding pad 8 and patrix fork 11 are descending, patrix fork 11 drives patrix press-bending piece 14 descending, and holding pad 8 is pushed down tubing middle part, and patrix press-bending piece 14 is pushed down the both sides of tubing, holding pad 8 and patrix press-bending piece 14 form closed coordinating with the counterdie 5 of bend pipe mould, and tubing is carried out to Bending Processing.At patrix fork 11, drive in the process of patrix press-bending piece 14 downward pressed bends, when can moving downward with patrix 2, patrix fork 11 two ends 10 swing around the shaft respectively, can adjust in real time patrix fork 11 be rocked to identical with the bending angle of bend pipe with the angle of horizontal direction, thereby make patrix press-bending piece 14 lower surfaces and tubing press close to reach mutually required bending angle; On the other hand, one end of counterdie swing arm 17 can 10 swing up and down around the shaft by rotating shaft 10, can adjust in real time counterdie swing arm 17 and be rocked to identical with the bending angle of bend pipe with the angle of horizontal direction.Because patrix press-bending piece 14, counterdie swing arm 17 and tubing have been adjusted to, are parallel to each other, press close to and mate, realizing patrix press-bending piece 14 and according to bending angle requirement, slide and suppress on pipe.
From technique scheme, can find out, bend pipe mould provided by the invention, by patrix fork 11, drive patrix press-bending piece 14 downward pressed bends, counterdie swing arm 17, patrix press-bending piece 14 parallel and are identical with the bending angle of bend pipe with the angle of horizontal direction, make patrix press-bending piece 14 according to bending angle requirement, slide and suppress on pipe, thereby bending efficiently go out to be out of shape little bend pipe.
Further, as shown in Figure 1, in the bend pipe mould providing in the embodiment of the present invention, described elastic spacing push rod 7 comprises elastic pressurized parts 22 and push rod 23; Described elastic pressurized parts 22 tops are installed on cope match-plate pattern 6 middle parts, and bottom is connected with push rod 23; Described push rod 23 can be under 22 effects of elastic pressurized parts, along the axial stretching of elastic pressurized parts 22.After platen starts, elastic pressurized parts 22 act on push rod 23, and push rod 23, along 22 axially-movables of elastic pressurized parts, drives holding pad 8 compacting materials in the tube.
For the adjusting of bend pipe mould is carried out in the actual demand according to tubing bending, as shown in Figure 1, in the bend pipe mould providing in the embodiment of the present invention, on described push rod 23 to the third side of mould to extending support 24; Between described support 24 and cope match-plate pattern 6, be provided with adjusting nut 9.By adjusting nut 9, can regulate the distance between patrix fork 11 and cope match-plate pattern 6.
Further, as shown in Figure 1, in the bend pipe mould providing in the embodiment of the present invention, the both sides of described cope match-plate pattern 6 are provided with patrix limited post 13, and described patrix limited post 13 is for limiting the swing position laterally of patrix fork 11.Lower surface height and the position of patrix limited post 13 are set according to the design requirement of tubing bending angle, and when patrix fork 11 upwards swings, restriction site is to herein.
Further, as shown in Figure 1, in the bend pipe mould providing in the embodiment of the present invention, described stopper slot 13, holding pad 8, wrinkle resistant 12 of patrix and wrinkle resistant 16 of counterdie are semicircle column type, and the internal diameter of its semicolumn is consistent with the external diameter of the pipe that needs to suppress.By wrinkle resistant 12 of patrix and wrinkle resistant 16 of counterdie, match and be enclosed in the outer wall of pipe, can avoid tubing to bend and in process, occur fold.
Further, as shown in Figure 1, in the bend pipe mould providing in the embodiment of the present invention, described elastic limit device 19 is spring, is more particularly gas spring.19 pairs of counterdie swing arms 17 of elastic limit device are carried out during to lower swing spacing, can also bend and when piece 14 slides compacting on pipe, strengthen the support force of counterdie swing arm 17 at patrix.
Further, as shown in Figures 2 and 3, the both sides of described die shoe 3 are provided with bend pipe wheel 4, described locating slot 21 is opened in the centre that bend pipe is taken turns 4 circumference.The position, the center of circle of bend pipe wheel 4 is located in the rotating shaft 10 that described counterdie swing arm 17 is connected with die shoe 3.By bend pipe, take turns 4 positions of installing and adjust, can control easily the bending angle of tubing, or by changing the bend pipe wheel 4 of different-diameter specification, and also can control bending angle, the more flexible facility of control mode.
Further, as shown in Figure 1, in the bend pipe mould providing in the embodiment of the present invention, the two ends of described counterdie swing arm 17 are provided with plug adjusting nut 18.By plug adjusting nut 18, adjusting is fixing to tubing, contributes to control forming elbow.
In order further to optimize technique scheme, as shown in Figure 1, in the bend pipe mould providing in the embodiment of the present invention, described die shoe 3 both sides are provided with counterdie swing arm limited post 15, the swing position that restriction counterdie swing arm 17 makes progress.Length and height that counterdie swing arm limited post 15 is set according to the design requirement of tubing bending angle, when counterdie swing arm 17 upwards swings, restriction site is to herein.
The embodiment of the present invention also provides a kind of bend pipe pressing process, comprises the following steps:
A. tubing is dropped in bend pipe mould, make it be placed in the stopper slot 20 on die shoe 3;
B. cope match-plate pattern 6 drive elastic spacing push rods 7 and patrix fork 11 are descending, and patrix fork 11 drives patrix press-bending pieces 14 descending, and the holding pad 8 on elastic spacing push rod 7 cooperatively interacts and pushes down tubing middle part with stopper slot 20;
When C. patrix fork 11 two ends can move downward with patrix 2,10 swing around the shaft respectively, drive patrix press-bending piece 14 10 to swing the wrinkle resistant 12 slip compacting on pipe of patrix making on patrix press-bending piece 14 around the shaft;
D. during patrix press-bending piece 14 compacting tubing, drive counterdie swing arm 17 around the shaft 10 to lower swing, make wrinkle resistant 12 of patrix join to forming with locating slot 21 and bend curve, wrinkle resistant 12 of patrix coordinates edge to bend curve slip to suppress bend pipe with locating slot 21.
By this pressing process, bending efficiently goes out to be out of shape little bend pipe, improves production efficiency and the product quality of bend pipe.
Claims (12)
1. a bend pipe mould, comprises patrix (2) and counterdie (5), it is characterized in that:
Described patrix (2) comprises cope match-plate pattern (6), elastic spacing push rod (7), patrix fork (11), patrix press-bending piece (14); Described counterdie (5) comprises lower bolster (1), die shoe (3), counterdie swing arm (17);
Described elastic spacing push rod (7) is located at the middle part of cope match-plate pattern (6) below; Described elastic spacing push rod (7) below is provided with holding pad (8); Described patrix fork (11) is located at elastic spacing push rod (7) both sides, and the upper end of patrix fork (11) is connected with cope match-plate pattern (6) by rotating shaft (10), and patrix fork (11) can swing (10) around the shaft; Described patrix press-bending piece (14) is connected with the lower end of patrix fork (11) by rotating shaft (10), and patrix press-bending piece (14) around the shaft (10) swings; Described patrix press-bending piece (14) bottom is wrinkle resistant of patrix (12);
Described die shoe (3) is located at lower bolster (1) middle part; Both sides to the side of the upper surface of described die shoe (3) is provided with locating slot (21), and the middle part of die shoe (3) upper surface is provided with stopper slot (20); Holding pad (8) on described stopper slot (20) and elastic spacing push rod (7) cooperatively interacts, its cooperation shape and size corresponding with the shape and size of the tubing that needs to suppress; Described locating slot (21) is circular arc, and locating slot (21) is corresponding with the shape and size of the tubing that needs to suppress; Described counterdie swing arm (17) is connected with the both sides of die shoe (3) by rotating shaft (10), and (10) swing around the shaft; Described counterdie swing arm (17) is provided with wrinkle resistant of counterdie (16) upwards, and described counterdie wrinkle resistant (16) cooperatively interacts with patrix wrinkle resistant (12), and the geomery after its cooperation is corresponding with the shape and size of the tubing that needs to suppress; Between described counterdie swing arm (17) and lower bolster (1), be provided with elastic limit device (19).
2. bend pipe mould according to claim 1, is characterized in that: described elastic spacing push rod (7) comprises elastic pressurized parts (22) and push rod (23); Described elastic pressurized parts (22) top is installed on cope match-plate pattern (6) middle part, and bottom is connected with push rod (23); Described push rod (23) can be under elastic pressurized parts (22) effect, along the axial stretching of elastic pressurized parts (22).
3. bending die according to claim 2, is characterized in that: the upper third side to mould of described push rod (23) is to extending support (24); Between described support (24) and cope match-plate pattern (6), be provided with adjusting nut (9).
4. bending die according to claim 1, is characterized in that: the both sides of described cope match-plate pattern (6) are provided with patrix limited post (13), and described patrix limited post (13) is for the swing position laterally of patrix fork (11).
5. bend pipe mould according to claim 1, it is characterized in that: described stopper slot (13), holding pad (8), patrix wrinkle resistant (12) and counterdie wrinkle resistant (16) are semicircle column type, the internal diameter of its semicolumn with need the external diameter of pipe of compacting consistent.
6. bend pipe mould according to claim 1, is characterized in that: described elastic limit device (19) is spring.
7. bend pipe mould according to claim 1, is characterized in that: described elastic limit device (19) is gas spring.
8. bend pipe mould according to claim 1, is characterized in that: the both sides of described die shoe (3) are provided with bend pipe wheel (4), and described locating slot (21) is opened in the centre of bend pipe wheel (4) circumference.
9. bend pipe mould according to claim 8, is characterized in that: the position, the center of circle of bend pipe wheel (4) is located in the rotating shaft (10) that described counterdie swing arm (17) is connected with die shoe (3).
10. bend pipe mould according to claim 1, is characterized in that: the two ends of described counterdie swing arm (17) are provided with plug adjusting nut (18).
11. bending dies according to claim 1, is characterized in that: described die shoe (3) both sides are provided with counterdie swing arm limited post (15), the swing position that restriction counterdie swing arm (17) makes progress.
12. 1 kinds of bend pipe pressing process, is characterized in that: comprise the following steps:
A. tubing is dropped in bend pipe mould, make it be placed in the stopper slot (20) on die shoe (3);
B. cope match-plate pattern (6) drive elastic spacing push rod (7) and patrix fork (11) are descending, patrix fork (11) drives patrix press-bending piece (14) descending, and the holding pad (8) on elastic spacing push rod (7) cooperatively interacts and pushes down tubing middle part with stopper slot (20);
When C. patrix fork (11) two ends can move downward with patrix (2), respectively (10) swing around the shaft, drive patrix press-bending piece (14) around the shaft (10) swing the patrix wrinkle resistant (12) making on patrix press-bending piece (14) compacting of sliding on pipe;
When D. patrix press-bending piece (14) is suppressed tubing, drive counterdie swing arm (17) around the shaft (10) to lower swing, patrix wrinkle resistant (12) and locating slot (21) are joined form to bend curve, patrix wrinkle resistant (12) coordinates edge to bend curve slip to suppress bend pipe with locating slot (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410340541.9A CN104174764B (en) | 2014-07-17 | 2014-07-17 | A kind of bend pipe mould and bend pipe pressing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410340541.9A CN104174764B (en) | 2014-07-17 | 2014-07-17 | A kind of bend pipe mould and bend pipe pressing process |
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| CN104174764A true CN104174764A (en) | 2014-12-03 |
| CN104174764B CN104174764B (en) | 2015-11-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105396919A (en) * | 2015-12-03 | 2016-03-16 | 苏州广硕精密电子有限公司 | Bending equipment with suitability for pipelines in various specifications |
| CN106345867A (en) * | 2016-08-30 | 2017-01-25 | 浙江嘉达机械制造有限公司 | Punch forming machine for elbows made from pipes |
| CN106391853A (en) * | 2016-10-27 | 2017-02-15 | 苏州仓旻电子科技有限公司 | Bending forming die |
| CN110918719A (en) * | 2019-11-28 | 2020-03-27 | 贵州凤安铝业科技有限公司 | Production device and method of aluminum bathroom product |
| CN111097847A (en) * | 2019-12-13 | 2020-05-05 | 昆山捷胜精密电子有限公司 | High-precision bending die for electronic connecting piece of mobile phone |
| CN112659438A (en) * | 2020-12-22 | 2021-04-16 | 梁佳鹏 | Single double-end polytetrafluoroethylene mould pressing rod machining device |
| CN114289570A (en) * | 2021-12-28 | 2022-04-08 | 和跃运动器材(江苏)有限公司 | Stamping and bending device and process for metal tube machining |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105396919A (en) * | 2015-12-03 | 2016-03-16 | 苏州广硕精密电子有限公司 | Bending equipment with suitability for pipelines in various specifications |
| CN106345867A (en) * | 2016-08-30 | 2017-01-25 | 浙江嘉达机械制造有限公司 | Punch forming machine for elbows made from pipes |
| CN106345867B (en) * | 2016-08-30 | 2018-10-23 | 浙江嘉达机械制造有限公司 | A kind of control elbow-punching forming machine |
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| CN111097847A (en) * | 2019-12-13 | 2020-05-05 | 昆山捷胜精密电子有限公司 | High-precision bending die for electronic connecting piece of mobile phone |
| CN111097847B (en) * | 2019-12-13 | 2024-06-11 | 昆山捷胜精密电子有限公司 | High-precision bending die for electronic connecting piece of mobile phone |
| CN112659438A (en) * | 2020-12-22 | 2021-04-16 | 梁佳鹏 | Single double-end polytetrafluoroethylene mould pressing rod machining device |
| CN114289570A (en) * | 2021-12-28 | 2022-04-08 | 和跃运动器材(江苏)有限公司 | Stamping and bending device and process for metal tube machining |
| CN114289570B (en) * | 2021-12-28 | 2024-05-03 | 和跃运动器材(江苏)有限公司 | Processing technology utilizing metal tube stamping and bending device |
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| Publication number | Publication date |
|---|---|
| CN104174764B (en) | 2015-11-25 |
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