CN104475481A - A variable corrugated pipe producing process and a product thereof - Google Patents
A variable corrugated pipe producing process and a product thereof Download PDFInfo
- Publication number
- CN104475481A CN104475481A CN201410554200.1A CN201410554200A CN104475481A CN 104475481 A CN104475481 A CN 104475481A CN 201410554200 A CN201410554200 A CN 201410554200A CN 104475481 A CN104475481 A CN 104475481A
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- Prior art keywords
- pipe
- supervisor
- copper pipe
- conical surface
- diameter
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Classifications
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- 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
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/16—Making tubes with varying diameter in longitudinal direction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D15/00—Corrugating tubes
- B21D15/04—Corrugating tubes transversely, e.g. helically
- B21D15/06—Corrugating tubes transversely, e.g. helically annularly
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
- B21D41/026—Enlarging by means of mandrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
- F16L9/06—Corrugated pipes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metal Extraction Processes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a variable corrugated pipe producing process. The process comprises following steps: 1) a step of expanding machining of two ends of a copper pipe, namely a step of selecting a copper pipe to be machined, fixing the two ends of the copper pipe, reserving sections to be expanded, and pushing mandrils into the copper pipe to achieve copper pipe expanding; 2) a step of subjecting the two ends of the copper pipe to size reducing, namely a step of reserving sections to be subjected to size reducing at pipe ends which are expanded, and compressing by adoption of size reducing molds, with the sections to be subjected to size reducing being machined to form pipe ends, and the rest of the expanded sections after pipe end machining being adopted as sections to be corrugated; 3) a step of subjecting the expanded sections of the copper pipe to corrugation spinning, namely a step of performing reciprocating spinning on the sections to be corrugated by using spinning devices, with the sections to be corrugated being machined into main pipes; and 4) a step of subjecting the whole machined copper pipe to high-temperature annealing processing to obtain a variable corrugated pipe. The process overcomes the problem that connecting pipes produced by traditional processes have scratches, and improves product quality. A product of the process is good in bending resistance and wide in the range of application.
Description
Technical field
Invention describes a kind of manufacturing technique method of the copper pipe for air-conditioning equipment, production technology of especially a kind of variable-diameter corrugated pipe and products thereof, belongs to machinery manufacturing technology field.
Background technology
Metal connecting tube is that split-type air conditioner or refrigerator are carrying out attaching parts important in the cooling/heating circulatory system, traditional metal connecting tube adopts equal pipe, when mounted, due to through walls or bent angle can be run into, this equal pipe is easily bent distortion, and cause managing the circulation of interior refrigeration liquid not freely, cause metal tube shortening in service life; For avoiding metal connecting tube damaged in installation process, the version that the metal tube that someone have employed different tube diameters welds, but there is again the risk that welding point place easily reveals in this structure.For solving the problem, publication number is that the Chinese patent of CN201277390Y discloses one " reducing endless corrugated connecting tube ", it comprises stage casing pipe, supervisor, reducer pipe and pipe end, supervisor outer end is reduced into pipe end by reducer pipe, and supervisor stage casing outer wall forms rib structure by the axial thread ripple of indent; Although the tube connector of this structure avoids multistage tubing and welds the disclosure risk caused, but, its overall structure is comparatively coarse, and due to the impact by old-fashioned technological level,, especially being responsible for the junction with reducer pipe junction and reducer pipe and pipe end, all there is obvious impression in the cut that tube surfaces stays after there is many places equipment processing, the whole smooth degree of product is lower, and this all can impact the sale of product and the maintaining in later stage.To this, publication number is that the Chinese patent of CN203413257U again discloses " a kind of metal reducing connecting tube ", and it comprises the first pipe end, the second pipe end and four reducer pipes, and four described reducer pipes are by streamlined natural transition reducing, although this patent structurally achieves fairshaped natural transition, but what mostly adopt due to traditional handicraft is that the mode of punching press or drawing is produced, therefore final product is difficult to reach effect described in this patent by existing technique, therefore we find that the product on market often still exists reducer pipe and supervisor, and reducer pipe and You compare Chang one end, pipe end junction ring-type is convex, indenture, this due in spinning or hot drawing process process equipment self precision cause not, particularly at whole tube connector axially, usually the axial cut of many hair thicknesses can be found, this is also the result inevitably caused due to traditional drawing process mode, therefore, want to obtain and both there is stronger bend resistance ability, there is again the tube connector of better external streamline, need to make improvement to production technology.
Summary of the invention
For above-mentioned deficiency of the prior art, main purpose of the present invention is to solve the problem that the existing metal connecting tube adopting Conventional processing methods to produce at present exists obvious impression and cut, and provide one both to have streamlined pipe shaft, there is again production technology of stronger bend resistance ability variable-diameter corrugated pipe and products thereof.
Technical scheme of the present invention: a kind of variable-diameter corrugated pipe production technology, is characterized in that, comprise the steps:
1) to the expanding processing in copper pipe two ends: the copper pipe choosing the drum to be processed of design length, copper pipe two ends are fixed respectively, one section of extension diameter section to be processed is respectively reserved at the two ends of copper pipe time fixing, then with plug respectively from copper pipe two ends vertically ecto-entad push copper pipe inside, the extension diameter section internal diameter to be processed at copper pipe two ends is expanded respectively, form the roughing extension diameter section that two ends are thicker, form the transition conical surface respectively in one end in the inner part at described roughing extension diameter section;
2) copper pipe two ends undergauge is processed: the roughing extension diameter section at copper pipe two ends is fixed respectively, one section of undergauge section to be processed is respectively reserved at the two ends of described roughing extension diameter section, adopt the stem reducing mould copper pipe of ecto-entad compression vertically from copper pipe two ends respectively, pipe end is formed respectively after described two undergauge section processing to be processed, two described roughing extension diameter sections remaining part after processing pipe end forms bellows segment to be processed, between described pipe end and corresponding bellows segment to be processed, form the transition conical surface respectively;
3) carry out ripple spinning to copper pipe: in described bellows segment to be processed, carry out reciprocal spinning respectively with spinning machine, the bellows segment to be processed after processing forms supervisor;
4) the high temperature anneal is carried out to whole copper pipe after processing, obtain variable-diameter corrugated pipe.
Production technology of the present invention have employed and the diverse mode of traditional reducer pipe production technology, it designs for the copper pipe used required in air-conditioning and refrigerator condensation process first specially, because the copper pipe used is softer, because contemplated that the copper pipe problem that is easily scratched of finished product after processing, adopt the mode from the inner expander draw again, avoid, in drawing process, damage is caused to copper pipe surface; And adopt specialized tool to operate, further again avoid in production process may occur because the scuffing that causes not of equipment precision, ensure yield rate, obtained product is produced for other products in the market by present invention process, surface has better fineness, connection has more streamlined, constant product quality, is applicable to long-time use.
Optimally, described plug is made up of mobile jib and drift, and described mobile jib and drift are cylindrical structure, and described drift is fixed on the front end of mobile jib, and the diameter of described drift is greater than mobile jib diameter, is also provided with the conical surface in the front end of drift.The mandrel structure adopted in the present invention is on the basis of said method principle, design and come, described drift is the punch structure adopting alloy material, it has better intensity, during installation, drift is bolted on mobile jib, and the conical surface of punch head is used to become conical surface shape in copper pipe upper punch swaging, the conical surface on drift adopts level and smooth flowing transition when designing, and on such copper pipe, the corresponding conical surface shape formed also has extraordinary streamlined.
Optimally, described stem reducing mould is made up of undergauge termination and pilot sleeve, a cylindric guidance cavity is provided with one for being connected the connection chamber of undergauge termination in described pilot sleeve, described undergauge termination is connected in pilot sleeve, undergauge chamber is provided with in undergauge termination, the leading portion in described undergauge chamber is pyramidal structure, is provided with opening in the front end in described undergauge chamber, and the back segment in undergauge chamber is drum and is communicated with described guidance cavity.Stem reducing mould in the present invention is also design on the basis of said method principle, its effect is to carry out undergauge process to the pipe end at copper pipe two ends, the fairshaped transition conical surface can also be formed between pipe end and corresponding supervisor simultaneously, no marking, without impression, can effectively to improve the quality of products.
Optimally, the connector for connecting drive device is provided with in the rear end of described mobile jib.Here the effect of connector is to be connected with supporting drive unit, when implementing process of the present invention, in order to enhance productivity, when promoting plug, the mode installing drive unit additional can be adopted, promote plug by drive unit to move, drive unit is here existing equipment, as hydraulic means etc.When connecting drive device and plug, namely being connected by described connector, here between connector and drive unit, can, for being threaded, also can be clamping or Flange joint etc.
Optimally, the internal diameter of described undergauge chamber back segment drum is less than the internal diameter of described guidance cavity.The object of such design is to make the copper pipe through undergauge cavity segment be compressed, and the copper pipe diameter being positioned at guidance cavity remains unchanged.
According to a product for above-mentioned variable-diameter corrugated pipe production technology, it is characterized in that, comprise integrated first pipe end, the first supervisor, stage casing pipe, the second supervisor and the second pipe end; Described first pipe end and first is responsible for and is connected, and described first supervisor is responsible for by stage casing pipe and second and is connected, and described second supervisor is connected with the second pipe end; Described first supervisor and the second stage casing outer wall be responsible for are respectively equipped with the rib structure be made up of the axial screw ripple of indent; The First Transition conical surface is provided with between described first supervisor and the first pipe end, the second transition conical surface is provided with between the first supervisor and stage casing pipe, between the second supervisor and stage casing pipe, be provided with the 3rd transition conical surface, between the second supervisor and the second pipe end, be provided with the 4th transition conical surface.
The product of technique gained of the present invention, produce obtained based on above-mentioned process, therefore in the junction of each local, namely the described transition conical surface, eliminate seam and folding line, bulk flow line style is better, after this avoids Long-Time Service on the one hand, copper pipe ruptures from folding line or cut or leaks, can enhance productivity on the other hand, increase the output in business unit's time, finally improve the performance of enterprises.
Further, described first pipe end, the first supervisor, stage casing pipe, second are responsible for all equal with the internal diameter of the second pipe end.In the present invention, on the final qualified products obtained, the internal diameter size of whole tube connector is substantially identical, this addresses the problem because internal diameter is inconsistent, cause the uneven problem of rate of flow of fluid, be conducive to ensureing the smooth and easy of tube connector internal work, thus also improve stability when equipment runs.
Further, the dual-side in the cross section of the described First Transition conical surface, the second transition conical surface, the 3rd transition conical surface and the 4th transition conical surface is straight line.
Further, the dual-side in the cross section of the described First Transition conical surface, the second transition conical surface, the 3rd transition conical surface and the 4th transition conical surface is arc-shaped structure.
Further, the length that the length of described first pipe end is less than the 1/2, second pipe end of first supervisor's length is less than 1/2 of second supervisor's length.In the present invention, the length of pipe end is relatively short, its role is to be connected and fixed with corollary equipment, certainly difference as required, and when manufacturing, the length of pipe end can adjust flexibly.
Relative to prior art, the present invention has following beneficial effect:
1, solve on tube connector that conventional machining process produces and there is the problem of cut, process of the present invention is by expanding, undergauge, and then the mode of spinning ripple, the metal connecting tube of surperficial natural transition can be obtained, cut can not be left between pipe end and supervisor, and tube connector is not owing to needing the drawing procedure through outside, therefore cut axially can not be produced, be conducive to like this improving the quality of products, tube connector surface obtained by this technique has better fineness, connection has more streamlined, constant product quality, is applicable to long-time use.
2, the internal diameter that the tube connector obtained by present invention process is each section can keep basically identical, thus can be reduced the transport resistance of refrigerant body, the internal diameter size of the whole tube connector of gained of the present invention is substantially identical, this addresses the problem because internal diameter is inconsistent, cause the uneven problem of rate of flow of fluid, be conducive to ensureing the smooth and easy of tube connector internal work, thus also improve stability when equipment runs.
3, there is good bend resistance ability: owing to being processed with axial screw ripple on the tube wall of supervisor, therefore improve the radial non-deformability of tube connector, even if bending is repeatedly also indeformable in installation process.
4, applied widely: because technological operation of the present invention is easier, be no longer dependent on the maximum length of the precision of process equipment and the time processing tube connector of conventional process tools restriction, therefore different wall can be processed according to demand, different tube diameters, the tube connector of different length, the Production requirement of various caliber tube connector can be met like this, and be also conducive to saving material.
5, the tube connector produced of present invention process is owing to adopting the structure of reducing segmentation, supervisor and pipe end and supervisor with middle adapter between, become nature transition from the conical surface of traditional structure to connect, not only can reduce liquid resistance, can also avoid the leakage hidden danger caused because welding produces joint, the oxide skin fundamentally avoided because of welding generation comes off and the accident being mixed into blocking pipeline in refrigerant and causing.
Accompanying drawing explanation
The structural representation of the product of Fig. 1 obtained by the production technology of variable-diameter corrugated pipe of the present invention.
The structure sectional view of the plug used in the production technology of Fig. 2 for variable-diameter corrugated pipe of the present invention.
The structure sectional view of the stem reducing mould used in the production technology of Fig. 3 for variable-diameter corrugated pipe of the present invention.
In figure, the 1-the first pipe end, the 2-the first supervisor, 3-stage casing is managed, 4-the second supervisor, the 5-the second pipe end, 6-First Transition conical surface, 7-the second transition conical surface, 8-the three transition conical surface, 9-the four transition conical surface, 10-mobile jib, 11-drift, 12-conical surface, 13-undergauge termination, 14-pilot sleeve, 15-guidance cavity, 16-connection chamber, 17-undergauge chamber, 18-connector.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figures 2 and 3, a kind of variable-diameter corrugated pipe production technology, comprises the steps:
1) to the expanding processing in copper pipe two ends: the copper pipe choosing the drum to be processed of design length, copper pipe two ends are fixed respectively, one section of extension diameter section to be processed is respectively reserved at the two ends of copper pipe time fixing, then with plug respectively from copper pipe two ends vertically ecto-entad push copper pipe inside, the extension diameter section internal diameter to be processed at copper pipe two ends is expanded respectively, form the extension diameter section that processing is thicker, here by its called after roughing extension diameter section, the transition conical surface is formed respectively in one end in the inner part at described roughing extension diameter section.When choosing copper pipe, technique of the present invention does not need the length limiting copper pipe, according to different demands, the length of copper pipe can be selected flexibly, from theory, the length of copper pipe can be endless, makes technique of the present invention be provided with the great scope of application like this, and be not limited to size and the ability of process equipment, therefore to very large lifting of having enhanced productivity.The plug adopted in the present invention, be be made up of mobile jib 10 and drift 11, described mobile jib 10 and drift 11 are cylindrical structure, and described drift 11 is fixed on the front end of mobile jib 10, the diameter of described drift 11 is greater than mobile jib 10 diameter, is also provided with the conical surface 12 in the front end of drift 11.The plug that the present invention adopts, on the one hand can carry out expanding to copper pipe, can also be formed between the supervisor after expanding and stage casing pipe on the other hand smooth, there is fairshaped surface structure.The connector 18 for connecting drive device is also provided with in the rear end of described mobile jib 10.Here the effect of connector is to support the use with the drive unit of outside, can reach laborsaving and object that is that raise the efficiency by drive unit, here connector 18 with can for being threaded between drive unit, also can be connected and fixed mode for other.
2) copper pipe two ends undergauge is processed: copper pipe two ends roughing extension diameter section section is fixed respectively, one section of undergauge section to be processed is respectively reserved at described roughing extension diameter section two ends, adopt the stem reducing mould copper pipe of ecto-entad compression vertically from copper pipe two ends respectively, pipe end is formed respectively after described two undergauge section processing to be processed, two described roughing extension diameter sections remaining part after processing pipe end forms bellows segment to be processed, between described pipe end and corresponding bellows segment to be processed, form the transition conical surface respectively.It should be noted that, in the present invention, the length of roughing extension diameter section is equal with the length of extension diameter section to be processed, and undergauge section to be processed is the part on roughing extension diameter section, under normal circumstances, after machining, on product, the length of pipe end is less than 1/2 of supervisor's length.Certainly, according to the demand of distinct device, the length of pipe end, and the length of supervisor's correspondence all can adjust flexibly, this is also the embodiment that technique of the present invention has the stronger scope of application.The stem reducing mould used in the present invention, be made up of undergauge termination 13 and pilot sleeve 14, a cylindric guidance cavity 15 is provided with one for being connected the connection chamber 16 of undergauge termination 13 in described pilot sleeve 14, described undergauge termination 13 is connected in pilot sleeve 14, undergauge chamber 17 is provided with in undergauge termination 13, the leading portion in described undergauge chamber 17 is pyramidal structure, is provided with opening in the front end in described undergauge chamber 17, and the back segment in undergauge chamber 17 is drum and is communicated with described guidance cavity 15.The internal diameter of described undergauge chamber 17 back segment drum is less than the internal diameter of described guidance cavity 15.In the present invention, the effect of stem reducing mould is to carry out undergauge process to two terminations of copper pipe, after stem reducing mould process, described pipe end can be formed on the one hand, can be formed between described pipe end and corresponding supervisor on the other hand and smoothly there is the fairshaped transition conical surface, equally also there is seamless and continuous formation appearance.
3) carry out ripple spinning to copper pipe: in described bellows segment to be processed, carry out reciprocal spinning respectively with spinning machine, the bellows segment to be processed after processing forms supervisor.Spinning machine in the present invention have employed existing equipment to operate, the model that Shunde District of Foshan City Lai Xiong plant equipment Co., Ltd such as can be selected to manufacture is the one digital-control two-head bellows automatic moulding machine of SKL-I, this equipment can be processed to form rib structure in copper pipe surface, and to copper pipe not damaged.
4) the high temperature anneal is carried out to whole copper pipe after processing, obtain variable-diameter corrugated pipe.After the effect of high annealing, the copper pipe after processing has better stability, simultaneously owing to being responsible for the rib structure after upper rotary press modelling, the bend resistance ability of bellows is obviously promoted, and bulk strength is better, reduces the probability that crack appears in local.
As shown in Figure 1, be a kind of product obtained by above-mentioned variable-diameter corrugated pipe production technology, it comprises integrated first pipe end 1, first supervisor 2, stage casing pipe 3, second supervisor 4 and the second pipe end 5; Described first pipe end 1 and first is responsible for 2 and is connected, and described first supervisor 2 is responsible for 4 by stage casing pipe 3 and second and is connected, and described second supervisor 4 is connected with the second pipe end 5; Described first supervisor 2 and second supervisor 4 stage casing outer wall on be respectively equipped with the rib structure be made up of the axial screw ripple of indent; The First Transition conical surface 6 is provided with between described first supervisor 2 and the first pipe end 1, the second transition conical surface 7 is provided with between the first supervisor 2 and stage casing pipe 3, between the second supervisor 4 and stage casing pipe 3, be provided with the 3rd transition conical surface 8, between the second supervisor 4 and the second pipe end 5, be provided with the 4th transition conical surface 9.In this product, the first supervisor 2 and the second supervisor 4 obtained by behind step 1 ~ 3 in above-mentioned technique, and the first pipe end 1 and the second pipe end 2 are by obtaining after above-mentioned processing step 1 ~ 2, and stage casing pipe 3 is the original shape of copper pipe.After processing, described first pipe end 1, first be responsible for 2, stage casing pipe 3, second be responsible for 4 and second the internal diameter of pipe end 5 all equal.Product of the present invention, for existing product, the internal diameter of tube connector maintains in the same size, and can avoid the not smooth and blocking in the refrigerant flow process caused because internal diameter varies in size like this, this is the innovation of internal structure; Avoid at the outer surface of product the cut and folding line that cause because of processing simultaneously, there is better streamlined appearance, this is the process innovation that processing technology is brought, the processing of different length, thickness copper pipe can also be applicable to simultaneously, so not only for idle call copper pipe, for other equipment of similar demand, also can mate.
When designing, the dual-side in the cross section of the described First Transition conical surface 6, the second transition conical surface 7, the 3rd transition conical surface 8 and the 4th transition conical surface 9 can be straight line, and can be also arc-shaped structure, they can have good smoothness.Difference according to demand, the length that the length of described first pipe end 1 is less than the 1/2, second pipe end 5 of the first supervisor 2 length is usually less than 1/2 of the second supervisor 4 length usually, certainly, for coordinating different equipment use, concrete length dimension can adjust flexibly, and is not limited to this.
It should be noted that, above embodiment is only in order to illustrate technical solution of the present invention but not restriction technologies scheme, although applicant is explained in detail the present invention with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, those amendments that technical solution of the present invention is carried out or equivalently to replace, aim and the scope of the technical program can not be departed from, all should be encompassed in the middle of the claims in the present invention scope.
Claims (10)
1. a variable-diameter corrugated pipe production technology, is characterized in that, comprises the steps:
1) to the expanding processing in copper pipe two ends: the copper pipe choosing the drum to be processed of design length, copper pipe two ends are fixed respectively, one section of extension diameter section to be processed is respectively reserved at the two ends of copper pipe time fixing, then with plug respectively from copper pipe two ends vertically ecto-entad push copper pipe inside, the extension diameter section internal diameter to be processed at copper pipe two ends is expanded respectively, form the roughing extension diameter section that two ends are thicker, form the transition conical surface respectively in one end in the inner part at described roughing extension diameter section;
2) copper pipe two ends undergauge is processed: the roughing extension diameter section at copper pipe two ends is fixed respectively, one section of undergauge section to be processed is respectively reserved at the two ends of described roughing extension diameter section, adopt the stem reducing mould copper pipe of ecto-entad compression vertically from copper pipe two ends respectively, pipe end is formed respectively after described two undergauge section processing to be processed, two described roughing extension diameter sections remaining part after processing pipe end forms bellows segment to be processed, between described pipe end and corresponding bellows segment to be processed, form the transition conical surface respectively;
3) carry out ripple spinning to copper pipe: in described bellows segment to be processed, carry out reciprocal spinning respectively with spinning machine, the bellows segment to be processed after processing forms supervisor;
4) the high temperature anneal is carried out to whole copper pipe after processing, obtain variable-diameter corrugated pipe.
2. a kind of variable-diameter corrugated pipe production technology according to claim 1, it is characterized in that, described plug is made up of mobile jib (10) and drift (11), described mobile jib (10) and drift (11) are cylindrical structure, described drift (11) is fixed on the front end of mobile jib (10), the diameter of described drift (11) is greater than mobile jib (10) diameter, is also provided with the conical surface (12) in the front end of drift (11).
3. a kind of variable-diameter corrugated pipe production technology according to claim 1 and 2, it is characterized in that, described stem reducing mould is made up of undergauge termination (13) and pilot sleeve (14), a cylindric guidance cavity (15) is provided with one for being connected the connection chamber (16) of undergauge termination (13) in described pilot sleeve (14), described undergauge termination (13) is connected in pilot sleeve (14), undergauge chamber (17) is provided with in undergauge termination (13), the leading portion of described undergauge chamber (17) is pyramidal structure, opening is provided with in the front end of described undergauge chamber (17), the back segment in undergauge chamber (17) is drum and is communicated with described guidance cavity (15).
4. a kind of variable-diameter corrugated pipe production technology according to claim 2, is characterized in that, is provided with the connector (18) for connecting drive device in the rear end of described mobile jib (10).
5. a kind of variable-diameter corrugated pipe production technology according to claim 3, is characterized in that, the internal diameter of described undergauge chamber (17) back segment drum is less than the internal diameter of described guidance cavity (15).
6. a product for variable-diameter corrugated pipe production technology according to claim 1, is characterized in that, comprises integrated first pipe end (1), the first supervisor (2), stage casing pipe (3), the second supervisor (4) and the second pipe end (5); Described first pipe end (1) is responsible for (2) and is connected with first, described first supervisor (2) is responsible for (4) by stage casing pipe (3) with second and is connected, and described second supervisor (4) is connected with the second pipe end (5); Described first supervisor (2) and second be responsible for (4) stage casing outer wall on be respectively equipped with the rib structure be made up of the axial screw ripple of indent; The First Transition conical surface (6) is provided with between described first supervisor (2) and the first pipe end (1), manage between (3) the first supervisor (2) and stage casing and be provided with the second transition conical surface (7), manage between (3) the second supervisor (4) and stage casing and be provided with the 3rd transition conical surface (8), between the second supervisor (4) and the second pipe end (5), be provided with the 4th transition conical surface (9).
7. the product of variable-diameter corrugated pipe production technology according to claim 6, is characterized in that, described first pipe end (1), the first supervisor (2), stage casing pipe (3), the second supervisor (4) are all equal with the internal diameter of the second pipe end (5).
8. the product of variable-diameter corrugated pipe production technology according to claim 6, is characterized in that, the dual-side in the cross section of the described First Transition conical surface (6), the second transition conical surface (7), the 3rd transition conical surface (8) and the 4th transition conical surface (9) is straight line.
9. the product of variable-diameter corrugated pipe production technology according to claim 6, it is characterized in that, the dual-side in the cross section of the described First Transition conical surface (6), the second transition conical surface (7), the 3rd transition conical surface (8) and the 4th transition conical surface (9) is arc-shaped structure.
10. the product of variable-diameter corrugated pipe production technology according to claim 6, is characterized in that, the length that the length of described first pipe end (1) is less than the 1/2, second pipe end (5) of the first supervisor (2) length is less than 1/2 of the second supervisor (4) length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN104874638A (en) * | 2015-06-19 | 2015-09-02 | 左铁军 | Manufacturing process for equal wall thickness variable-diameter copper pipe |
| CN104976447A (en) * | 2015-06-10 | 2015-10-14 | 宁波奥克斯空调有限公司 | Air conditioner bellows and manufacturing method thereof |
| CN105423005A (en) * | 2015-12-18 | 2016-03-23 | 孝感华越机电科技有限公司 | Metal tube of metal splitter |
| CN106881422A (en) * | 2017-03-02 | 2017-06-23 | 福州诺贝尔福基机电有限公司 | Oil filling pipe entrance point moulding process |
| CN112439789A (en) * | 2020-10-30 | 2021-03-05 | 太原理工大学 | Forming method of easy-to-demould core rod and metal composite pipe |
| CN114713700A (en) * | 2021-12-21 | 2022-07-08 | 倍力汽车轻量化科技(潍坊)有限公司 | Hot-air-expansion integrated forming method for lightweight drive axle housing |
| CN117140990A (en) * | 2023-10-30 | 2023-12-01 | 福建澳工新材料有限公司 | Production equipment for plastic reinforcing rib wound corrugated pipe |
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| CN104976447A (en) * | 2015-06-10 | 2015-10-14 | 宁波奥克斯空调有限公司 | Air conditioner bellows and manufacturing method thereof |
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| CN104874638B (en) * | 2015-06-19 | 2017-01-18 | 左铁军 | Manufacturing process for equal wall thickness variable-diameter copper pipe |
| CN105423005A (en) * | 2015-12-18 | 2016-03-23 | 孝感华越机电科技有限公司 | Metal tube of metal splitter |
| CN106881422A (en) * | 2017-03-02 | 2017-06-23 | 福州诺贝尔福基机电有限公司 | Oil filling pipe entrance point moulding process |
| CN112439789A (en) * | 2020-10-30 | 2021-03-05 | 太原理工大学 | Forming method of easy-to-demould core rod and metal composite pipe |
| CN114713700A (en) * | 2021-12-21 | 2022-07-08 | 倍力汽车轻量化科技(潍坊)有限公司 | Hot-air-expansion integrated forming method for lightweight drive axle housing |
| CN114713700B (en) * | 2021-12-21 | 2024-04-26 | 倍力汽车轻量化科技(潍坊)有限公司 | Method for integrally forming lightweight driving axle housing through hot air expansion |
| CN117140990A (en) * | 2023-10-30 | 2023-12-01 | 福建澳工新材料有限公司 | Production equipment for plastic reinforcing rib wound corrugated pipe |
| CN117140990B (en) * | 2023-10-30 | 2024-03-22 | 福建澳工新材料有限公司 | Production equipment for plastic reinforcing rib wound corrugated pipe |
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| CN104475481B (en) | 2016-08-31 |
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Denomination of invention: A variable corrugated pipe producing process and a product thereof Effective date of registration: 20171215 Granted publication date: 20160831 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Wuxi Golden Dragon Kawamura Precision Tube Co., Ltd.|Chongqing Longyu Precision Copper Tube Co., Ltd.|Henan Longhui Copper Industry Co., Ltd.|Xinxiang Jinxiang Precision Pipe Fittings Co., Ltd.|Xinxiang Longteng Refrigeration Technology Co.,Ltd.|Jiangsu Canghuan Copper Industry Co.,Ltd.|Jinlong Precision Copper Pipe Group Co., Ltd.|Guangdong Longfeng Precise Copper Tube Co., Ltd. Registration number: 2017990001045 |
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Date of cancellation: 20190814 Granted publication date: 20160831 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Chongqing Longyu Precision Copper Tube Co., Ltd. Registration number: 2017990001045 |
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Denomination of invention: A variable corrugated pipe producing process and a product thereof Effective date of registration: 20190830 Granted publication date: 20160831 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Chongqing Longyu Precision Copper Tube Co., Ltd. Registration number: Y2019990000127 |