CN108526232A - Cross tee one-pass molding sky drawing-die has - Google Patents
Cross tee one-pass molding sky drawing-die has Download PDFInfo
- Publication number
- CN108526232A CN108526232A CN201810454151.2A CN201810454151A CN108526232A CN 108526232 A CN108526232 A CN 108526232A CN 201810454151 A CN201810454151 A CN 201810454151A CN 108526232 A CN108526232 A CN 108526232A
- Authority
- CN
- China
- Prior art keywords
- linkage section
- die
- forming hole
- pass molding
- cross tee
- Prior art date
- 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.)
- Granted
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 23
- 230000000750 progressive effect Effects 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 42
- 229910052802 copper Inorganic materials 0.000 description 42
- 239000010949 copper Substances 0.000 description 42
- 238000000034 method Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 12
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000960 colored gold Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
- B21C3/04—Dies; Selection of material therefor; Cleaning thereof with non-adjustable section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Invention describes a kind of cross tee one-pass molding sky drawing-die tools, including die sleeve, the die sleeve is disc-shape, it is equipped with the forming hole that opening is the progressive circular arc of segmented at the center of die sleeve, the bottom of forming hole is decussate texture, the inner wall of the forming hole is followed successively by the first linkage section, the second linkage section and third linkage section from lower to upper, and smooth excessiveness forms the progressive circular arc of the segmented successively for the first linkage section, the second linkage section and third linkage section；First linkage section is vertical cylindrical shape, the height of first linkage section is less than 2.5mm, and second linkage section is inverted cone-shaped structure, and the taper of the second linkage section is 12.5 ° 14 °, the third linkage section is inverted cone-shaped structure, and the taper of third linkage section is 38 ° 42 °；An open slot is formed at the upper end opening of third linkage section, the open slot is ellipse.Present invention reduces the molding difficulty of product, improve production efficiency, also reduce production cost.
Description
Technical field
The present invention relates to a kind of processing mold of copper pipe, especially cross tee one-pass molding sky drawing-die to have, and belonging to has coloured gold
Belong to processing technique field.
Background technology
Cross tee is one of the ost important components on gas heater, it is different from common steel tubular goods, due to needing have
It has good heat conductivility, therefore is made using fine copper material, the section of tube body is criss-cross structure.Now producing at present
It when cross tee, is made of knockdown mold, i.e., is completed jointly by a drawing die and a core print, and
Before being stretched, it is also necessary to copper pipe compression is made up to the tubing of ellipse of other equipment, it then again will be oval
Tubing be sent into drawing die stretched, oval copper pipe finally could form ten under mold and core print collective effect
Word pipe.
But but there is many defects and inconvenience in this traditional mold in process of production：1）Traditional mold is necessary
Coordinate core print that could complete to stretch, and core print has to make of the alloy material of high intensity, cost is very high；2）It is existing
Mold before stretching copper pipe, it is necessary to suitable oval copper pipe first is made in the circular copper pipe of frame material, otherwise without
Method carries out stretched operation, and the elliptical tube after processing must also be straight tube, and complex procedures, production cost is resulted in increase in this way
Add；3）Existing mold, since the mobility of copper pipe is poor, causes copper pipe to be hindered when passing through mold during stretching copper pipe
Power is very big, is possible to product surface can be caused to scratch in this way, and is molded difficulty and also increases, and is unfavorable for improving production efficiency.
Invention content
For above-mentioned deficiency in the prior art, it is a primary object of the present invention to solve now at present when making cross tee
Used mold molding difficulty is larger and the problem of leading to whole operation process complications, and providing one kind can simplify
Production, the cross tee one-pass molding sky drawing-die tool for reducing equipment cost.
Technical scheme of the present invention：Cross tee one-pass molding sky drawing-die has, including die sleeve, and the die sleeve is disc-shape,
It is characterized in that, being equipped with the forming hole that opening is the progressive circular arc of segmented at the center of die sleeve, the bottom of the forming hole is ten
The inner wall of character form structure, the forming hole is followed successively by the first linkage section, the second linkage section and third linkage section from lower to upper, described
The first linkage section, the second linkage section and third linkage section smooth excessiveness forms the progressive circular arc of the segmented successively；Described
One linkage section is vertical cylindrical shape, and the height of the first linkage section is less than 2.5mm, and second linkage section is back taper knot
The taper of structure, the second linkage section is 12.5 ° -14 °, and the third linkage section is inverted cone-shaped structure, and the taper of third linkage section is
38°-42°；An open slot is formed at the upper end opening of third linkage section, the open slot is ellipse.
The length of the forming hole longitudinal direction is more than lateral width, and the length of forming hole longitudinal direction is less than the open slot short axle
Length.
In the empty drawing-die tool of the present invention, innovative point is to use the molding pore structure of smooth type, but is not limited only to
The structure of smooth type, because those skilled in the art has found in the design, due to the particularity that copper pipe is manufactured, the industry
In be all that circular copper pipe frame material is first made, if can not directly be stretched with copper pipe frame material, production efficiency if, is difficult to carry
Height, but in traditional drawing die, even if using the structure of relative smooth, still result in copper pipe gross distortion, have to
The case where matching core print, and the present invention is exactly to be used different on the basis of having extensively studied traditional moulds defect
The smooth manner of structure is started with from the precision controlling of each linkage section, and strictly controls their taper and height, more into
One step is that the minor axis length of open slot is carried out matching with the diameter of copper pipe frame material to be combined, and finally enables copper pipe frame material straight
It connects to enter in mold and be stretched, and core print need not be configured can be molded, reach simplified process, improve production efficiency
Purpose.
Optimally, the upper corresponding tapered structure in two sides in both ends in forming hole longitudinal direction.It, will in the present invention
The length direction of criss-cross forming hole devises subtle taper, and the taper is interior big outer small taper angled manner, this
Sample can be very good to promote the smooth degree of copper flowing of the copper pipe in drawing process, although varying less in angle,
For the result of product clearly, such design can ensure copper pipe in forming process according to preset shape into
Row variation, and copper pipe tube wall will not be caused to be recessed, it is greatly improved the qualification rate of product.
Optimally, it is additionally provided with a blow tank in the bottom of the die sleeve, the blow tank is conical structure, blow tank
Upper end and forming hole bottom connect.Here the purpose of design blow tank is so that copper pipe is when leaving mold, Bu Huiyu
The edge of mold is touched, and can be accidentally injured in this way to avoid copper pipe.
Optimally, it is additionally provided with a feed well on the top of the die sleeve, the section of the feed well is circle, feed well
Side be arc-shaped, the diameter of feed well is more than the length of open slot long axis.By the way that feed well is arranged, it is also possible that copper pipe
Frame material can be more smoothly sent in forming hole, avoid that copper pipe terminal is caused to touch with mold, and then improve product
Qualification rate.
Optimally, the vertical height of the feed well is less than the vertical height of blow tank.Here the height of blow tank is set
Bigger is counted to obtain, is to coordinate follow-up equipment certainly, can also flexible design according to actual demand to being molded the collection of copper pipe
The height of blow tank.
Optimally, the vertical height of second linkage section is more than the vertical height of third linkage section.In the present invention, second
The height of linkage section and third linkage section proportioning is important precision controlling means, is set by the height to two linkage sections
Meter, enables to copper pipe frame material in drawing process, controls it in the size of different phase stress, on the one hand can ensure in this way
Copper pipe be stretched it is forming in place, the case where avoiding not being molded, on the other hand also to control hole wall caused by frictional force it is excessive, keep away
Exempt to cause excessive tensile, otherwise will also result in copper pipe deformation.
Optimally, the taper of the blow tank is 60 °.Here it is further limited by the taper to blow tank, it can
Improve smoothness when copper pipe discharging.
Compared with the existing technology, the invention has the advantages that：
1, the molding difficulty of product is reduced：The one-time-shaped mould that the present invention uses not only is not necessarily to core print component, nor
The process that ellipse is made in circular copper pipe before the stretching is needed, it is i.e. stretchable that the copper pipe of frame material is directly sent to mold, this
Sample makes whole production process simplify, and reduces the molding difficulty of copper pipe.
2, production efficiency is improved：Relative to the operation for needing first to carry out first compression copper pipe originally, only need now primary
Operation can be obtained finished product, while realizing frame material uniaxial direct tensile so that production efficiency improves 5-8 times.
3, production cost is reduced：Core print component of the one side due to not needing special purchasing price costliness, saves big
The cost of amount, on the other hand due to copper pipe, resistance is small in drawing process, copper flowing is more smooth, can effectively prevent copper
Tube failure is greatly lowered the underproof probability of product, reduces production cost in this way.
Description of the drawings
Fig. 1 is the front view of cross tee one-pass molding sky drawing-die of the present invention tool.
Fig. 2 is the A-A sectional views of Fig. 1.
Fig. 3 is the B-B sectional views of Fig. 1.
Fig. 4 is the stereogram of cross tee one-pass molding sky drawing-die of the present invention tool.
In figure, 1-die sleeve, 2-forming holes, the 21-the first linkage section, the 22-the second linkage section, 23-third linkage sections,
3-open slots, 4-blow tanks, 5-feed wells.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
As Figure 1-Figure 4, cross tee one-pass molding sky drawing-die of the invention tool, including die sleeve 1, the die sleeve 1 are circle
Disk shape is equipped with the forming hole 2 that opening is the progressive circular arc of segmented at the center of die sleeve 1, and the bottom of the forming hole 2 is cross
The inner wall of shape structure, the forming hole 2 is followed successively by the first linkage section 21, the second linkage section 22 and third linkage section from lower to upper
23, smooth excessiveness forms the segmented gradually successively for first linkage section 21, the second linkage section 22 and third linkage section 23
Into circular arc.All it is by the way of smooth excessiveness and to form an entirety, such copper pipe exists in three linkage sections
Resistance in drawing process is smaller, and interim card or overstress will not be caused to deform.In the forming hole 2, first connection
Section 21 is vertical cylindrical shape, and the height of the first linkage section 21 is less than 2.5mm, and the height of the first linkage section 21 can be
2.4mm, 2.2mm, 2mm, 1.9mm or 1.8mm, second linkage section 22 are inverted cone-shaped structure, the taper of the second linkage section 22
It can be 12.5 °, 12.8 °, 13 °, 13.2 °, 13.5 °, 13.7 °, 13.9 ° or 14 °, the third linkage section 23 is back taper knot
Structure, the taper of third linkage section 23 can be 38 °, 38.5 °, 38.8 °, 39 °, 39.2 °, 39.5 °, 39.7 °, 40 °, 40.3 °,
40.5 °, 41 °, 41.6 °, 41.8 ° or 42 °；An open slot 3, the opening are formed at the upper end opening of third linkage section 23
Slot 3 is ellipse.
Referring to Fig. 1-Fig. 4, in of the invention, the longitudinal length of the forming hole 2 is more than lateral width, and forming hole 2 is longitudinal
Length be less than 3 short axle of the open slot length.Here it is to regard open slot 3 as an ellipse, the longitudinal length of forming hole 2
Degree is the maximum gauge that can be put into copper pipe, if the minor axis length of open slot 3 is less than this maximum gauge, that copper pipe just can not
It is put into, this is also the important technology index of inventive die.Likewise, in order to enable forming hole inner wall is more smooth, reduce at
Type difficulty, the longitudinal upper corresponding tapered structure in two sides in both ends of the forming hole 2.
Referring to Fig. 2 and Fig. 3, it is additionally provided with a blow tank 4 in the bottom of the die sleeve 1, the blow tank 4 is that cone is tied
Structure, the upper end of blow tank 4 are connected with the bottom of forming hole 2.Be additionally provided with a feed well 5 on the top of the die sleeve 1, it is described into
The section of hopper 5 is circle, and the side of feed well 5 is arc-shaped, and the diameter of feed well 5 is more than the length of 3 long axis of open slot.Institute
The vertical height for stating feed well 5 is less than the vertical height of blow tank 4.In the present invention, the vertical height of feed well 5 can be designed
For 2mm, the vertical height of blow tank is designed as 12mm, is 60 ° by the taper design of the blow tank 4.
Referring to Fig. 2 and Fig. 3, the vertical height of second linkage section 22 is more than the vertical height of third linkage section 23.This
In invention, the vertical height of the second linkage section 22 can be 10mm, 11mm, 12mm or 13mm, the vertical height of third linkage section 23
Degree can be 8mm, 7mm or 6mm.Certainly according to different tube body size requirements, the height of the second linkage section and third linkage section
It can be adjusted flexibly.
The cross tee one-pass molding sky drawing-die tool of the present invention simplifies structure first, need not match high-cost core
Head further simplifies process, need not then be redrawn first by the prefabricated ovalisation of copper pipe frame material, it can directly by
Circular copper pipe frame material uniaxial direct tensile, saves a large amount of time, also reduces production difficulty, not only has practical valence well
Value, also has greatly improved simultaneously for the production efficiency of entire copper pipe production line.
It should be noted that above example is only to illustrate technical solution of the present invention rather than restriction technologies scheme, although
Applicant is explained in detail the present invention with reference to preferred embodiment, it will be understood by those of ordinary skill in the art that, those are right
The modification or equivalent replacement that technical solution of the present invention carries out, cannot be detached from the objective and range of the technical program, should all cover
In scope of the invention as claimed.
Claims (8)
1. cross tee one-pass molding sky drawing-die has, including die sleeve（1）, the die sleeve（1）For disc-shape, which is characterized in that
Die sleeve（1）Center be equipped with opening be the progressive circular arc of segmented forming hole（2）, the forming hole（2）Bottom be cross
Structure, the forming hole（2）Inner wall be followed successively by the first linkage section from lower to upper（21）, the second linkage section（22）It is connected with third
Section（23）, first linkage section（21）, the second linkage section（22）With third linkage section（23）Smooth excessiveness forms institute successively
State the progressive circular arc of segmented；First linkage section（21）For vertical cylindrical shape, the first linkage section（21）Height be less than
2.5mm, second linkage section（22）For inverted cone-shaped structure, the second linkage section（22）Taper be 12.5 ° -14 °, the third
Linkage section（23）For inverted cone-shaped structure, third linkage section（23）Taper be 38 ° -42 °；In third linkage section（23）Upper end open
An open slot is formed at mouthful（3）, the open slot（3）For ellipse.
2. cross tee one-pass molding sky drawing-die tool according to claim 1, which is characterized in that the forming hole（2）It is longitudinal
Length be more than lateral width, forming hole（2）Longitudinal length is less than the open slot（3）The length of short axle.
3. cross tee one-pass molding sky drawing-die tool according to claim 2, which is characterized in that the forming hole（2）It is longitudinal
The corresponding tapered structure in two sides in upper both ends.
4. cross tee one-pass molding sky drawing-die tool according to claim 3, which is characterized in that in the die sleeve（1）Bottom
Portion is additionally provided with a blow tank（4）, the blow tank（4）For conical structure, blow tank（4）Upper end and forming hole（2）'s
Bottom is connected.
5. cross tee one-pass molding sky drawing-die tool according to claim 4, which is characterized in that in the die sleeve（1）Top
End is additionally provided with a feed well（5）, the feed well（5）Section be circle, feed well（5）Side be it is arc-shaped, charging
Slot（5）Diameter be more than open slot（3）The length of long axis.
6. cross tee one-pass molding sky drawing-die tool according to claim 5, which is characterized in that the feed well（5）It is perpendicular
Straight height is less than blow tank（4）Vertical height.
7. cross tee one-pass molding sky drawing-die tool according to claim 6, which is characterized in that second linkage section（22）
Vertical height be more than third linkage section（23）Vertical height.
8. cross tee one-pass molding sky drawing-die tool according to claim 7, which is characterized in that the blow tank（4）Cone
Degree is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810454151.2A CN108526232B (en) | 2018-05-14 | 2018-05-14 | Cross pipe one-step forming blank drawing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810454151.2A CN108526232B (en) | 2018-05-14 | 2018-05-14 | Cross pipe one-step forming blank drawing die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108526232A true CN108526232A (en) | 2018-09-14 |
| CN108526232B CN108526232B (en) | 2024-02-06 |
Family
ID=63477263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810454151.2A Active CN108526232B (en) | 2018-05-14 | 2018-05-14 | Cross pipe one-step forming blank drawing die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108526232B (en) |
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| CN105562456A (en) * | 2015-12-03 | 2016-05-11 | 中铝洛阳铜业有限公司 | Preparation process of red copper square pipe material |
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| CN107900124A (en) * | 2017-12-29 | 2018-04-13 | 重庆龙煜精密铜管有限公司 | Stretch external mold and again die drawing stretching process |
| CN208162311U (en) * | 2018-05-14 | 2018-11-30 | 重庆龙煜精密铜管有限公司 | Cross tee one-pass molding sky drawing-die tool |
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| EP0718051A1 (en) * | 1994-12-22 | 1996-06-26 | Dr.-Ing. Gerd Schwier GmbH Ingenieurbüro für Metallformung | Method for producing rotationally symmetric, thermally shrunk drawing tools for the cold drawing of metallic wires, bars and tubes as well as for the compacting cables and braids |
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| CN208162311U (en) * | 2018-05-14 | 2018-11-30 | 重庆龙煜精密铜管有限公司 | Cross tee one-pass molding sky drawing-die tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108526232B (en) | 2024-02-06 |
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