CN114101953B - Connecting process of multi-junction components - Google Patents
Connecting process of multi-junction components Download PDFInfo
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- CN114101953B CN114101953B CN202111346788.8A CN202111346788A CN114101953B CN 114101953 B CN114101953 B CN 114101953B CN 202111346788 A CN202111346788 A CN 202111346788A CN 114101953 B CN114101953 B CN 114101953B
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- Prior art keywords
- pipe
- expanding
- welding
- lower pipe
- sleeve
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a connecting process of multi-junction components, which comprises a lower pipe, a middle cover and an upper pipe, and comprises the following steps: step one, lower pipe expanding, step two, slotting, step three, welding preparation, step four, welding; through optimizing welding process for the through-hole of intermediate cap only overlaps outside the lower pipe, and lower pipe cover is on last pipe, and the cover makes the connection more firm in succession like this, only needs the port part of hot melt lower pipe just can be in the same place intermediate cap, lower pipe and last pipe connection voluntarily during the welding simultaneously, and is more convenient during the welding, can not appear the gap moreover.
Description
Technical Field
The invention relates to the field of machining, in particular to a connecting process of multi-junction components.
Background
The pipe fittings and other structures are often troublesome when being connected together, welding is needed between the pipe fittings and between the pipe fittings and the holes, auxiliary connection is needed to be made by welding rods during welding, the welding is needed for a plurality of times, the welding is very troublesome each time, and gaps are easy to occur in the biggest problem.
Especially when a plurality of pipe fittings and other structures need to be connected in same place, often only the welding border position, lead to the mid portion to appear the fretwork for joint strength is not enough.
Disclosure of Invention
The invention aims to provide a connecting process of a multi-junction member, which is characterized in that through optimizing a welding process, a through hole of a middle cover is sleeved outside a lower pipe, and the lower pipe is sleeved on an upper pipe, so that connection is firmer by sequential sleeving, simultaneously, the middle cover, the lower pipe and the upper pipe can be automatically connected together only by hot melting of a port part of the lower pipe during welding, and the welding is more convenient and no gap exists.
The connecting process of the multi-junction member comprises a lower pipe, a middle cover and an upper pipe, and comprises the following steps:
step one, pipe expanding is carried out on the lower pipe,
the pipe expanding operation is carried out on the connecting port of the lower pipe through the pipe expanding mechanism, the connecting port of the lower pipe is changed into an outer expanding pipe sleeve, and the inner diameter of the outer expanding pipe sleeve is larger than or equal to the outer diameter of the upper pipe;
step two, slotting is carried out,
slotting the outer expansion pipe sleeve in the vertical direction, and cutting a plurality of equidistant buffer slots by a cutting machine;
step three, preparing for welding,
fixing the lower pipe, the middle cover and the upper pipe on a welding table in sequence from bottom to top, wherein an outer expanding pipe sleeve of the lower pipe passes through a through hole in the middle cover, a part of the outer expanding pipe sleeve is exposed, and the upper pipe is inserted into the outer expanding pipe sleeve;
step four, welding is carried out,
and (3) aligning the welding gun with the part of the outer expanding sleeve exposed from the upper part of the middle cover in the third step, and melting the part to connect the part with the middle cover and the upper pipe, so as to realize the connection and fixation of the pipe, the middle cover and the upper pipe.
Preferably, the pipe expanding mechanism comprises a substrate, a conveying trolley, a hot melting furnace, a pipe expanding die and a motor, wherein the conveying trolley is connected to the substrate in a sliding mode, the hot melting furnace and the pipe expanding die are fixedly connected to the substrate, the pipe expanding die is fixedly connected to the rear side of the hot melting furnace, the motor is fixedly connected to the substrate and an output shaft of the motor is connected with a screw rod, the screw rod is in threaded connection with the conveying trolley, and two groups of fixing rings for fixing a lower pipe are arranged on the conveying trolley.
Preferably, the welding table comprises a base table and a cover supporting table, the cover supporting table is fixedly connected to the upper end of the base table, a fixed magnetic ring is arranged on the cover supporting table, and a through lower pipe groove is formed in the center of the base table and the center of the cover supporting table.
Preferably, in the second step, the number of the buffer slits is 4 or 6, and the depth of the buffer slits is less than or equal to the length of the exposed part of the outer expanding sleeve from the upper part of the middle cover in the third step.
Preferably, the base plate is provided with two sliding rails, a limiting plate fixedly connected with the base plate is arranged at the rear of the sliding rails, the conveying trolley is slidably connected with the sliding rails, a driving block is fixedly connected to the middle of the bottom of the conveying trolley, and the driving block is in threaded connection with the screw rod.
Preferably, the hot melting furnace and the pipe expanding die are fixedly connected to the substrate through a base, the front end of the screw is rotatably connected to the base, and a pipe expanding cone is fixedly arranged at the inner center of the pipe expanding die.
Preferably, a limiting plate fixedly connected with the base plate is arranged at the rear of the sliding rail, and a bolt for opening and closing the ring is arranged on the fixed ring.
The invention has the advantages that: through optimizing welding process for the through-hole of intermediate cap only overlaps outside the lower pipe, and lower pipe cover is on last pipe, and the cover makes the connection more firm in succession like this, only needs the port part of hot melt lower pipe just can be in the same place intermediate cap, lower pipe and last pipe connection voluntarily during the welding simultaneously, and is more convenient during the welding, can not appear the gap moreover.
Drawings
FIG. 1 is a schematic view of a down tube processing process of the present invention;
FIG. 2 is a schematic view of the process improvement of the present invention during welding;
FIG. 3 is a schematic view of the tube expanding mechanism in the device of the present invention;
FIG. 4 is a side view of the tube expansion mechanism of the apparatus of the present invention;
FIG. 5 is a schematic view showing the internal structure of a pipe expanding mechanism in the apparatus of the present invention;
FIG. 6 is an enlarged view of portion A of FIG. 5;
FIG. 7 is a schematic view of the structure of a welding table in the apparatus of the present invention;
FIG. 8 is a schematic view of the connection of the lower tube, the intermediate cap and the upper tube in the device of the present invention;
wherein 01, lower tube, 02, middle cover, 03, upper tube, 04, outer expansion tube sleeve, 05, buffer seam, 1, base plate, 2, conveying trolley, 3, slide rail, 4, base, 5, hot melting furnace, 6, expansion tube mould, 7, a fixed ring, 8, a motor, 9, a screw rod, 10, a limiting plate, 11, a driving block, 12, a bolt, 13, a pipe expanding cone, 14, a base station, 15, a cover supporting station, 16, a pipe discharging groove, 17 and a fixed magnetic ring.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 8, the work piece of the present invention includes a lower pipe 01, an intermediate cover 02 and an upper pipe 03, and the processing process includes the steps of:
first, the pipe expanding operation is performed on the connection port of the lower pipe 01 through the pipe expanding mechanism, the connection port of the lower pipe 01 is changed into an outer pipe expanding sleeve 04, the inner diameter of the outer pipe expanding sleeve 04 is larger than or equal to the outer diameter of the upper pipe 03, and meanwhile, the outer diameter of the outer pipe expanding sleeve 04 is smaller than the inner diameter of the connection through hole of the middle cover 02.
And secondly, slotting the outer expansion pipe sleeve 04 in the vertical direction, and cutting a plurality of equidistant buffer seams 05 by a cutting machine, wherein the number of the buffer seams 05 is 4 or 6, and the optimal number is the optimal number. The purpose of the slotting is that the outer diameter of the lower pipe 01 is slightly different from the inner diameter of the connecting through hole of the middle cover 02, after the pipe expanding treatment is carried out, the outer diameter of the outer pipe expanding sleeve 04 is very close to the inner diameter of the connecting through hole of the middle cover 02 (basically excessive or interference fit is carried out when the outer pipe expanding sleeve and the connecting through hole of the middle cover 02 are connected), and the outer pipe expanding sleeve 04 deforms due to slight collision, so that the outer pipe expanding sleeve 04 is easy to be inserted into the connecting through hole of the middle cover 02.
Thirdly, fixing the lower pipe 01, the middle cover 02 and the upper pipe 03 on a welding table in sequence from bottom to top, wherein the lower pipe 01 is inserted into a lower pipe groove 16, then the middle cover 02 is sleeved on an outer expansion pipe sleeve 04 of the lower pipe 01 from top to bottom, meanwhile, the middle cover 02 is pressed on a cover supporting table 15, the middle cover 02 and the cover supporting table 15 are kept relatively fixed through a fixed magnetic ring 17, and finally the upper pipe 03 is inserted into the outer expansion pipe sleeve 04.
It is noted that the depth of the buffer slot 05 formed in the second step is less than or equal to the length of the exposed portion of the flared sleeve 04 above the intermediate cover 02.
And fourthly, aligning the welding gun with the part of the middle expanding sleeve 04 exposed from the upper part of the middle cover 02, melting the part, and connecting the part with the middle cover 02 and the upper pipe 03 to realize the connection and fixation of the pipe 01, the middle cover 02 and the upper pipe 03.
In the first step, the pipe expanding mechanism used in the pipe expanding operation comprises a base plate 1, a conveying trolley 2, a hot melting furnace 5, a pipe expanding die 6 and a motor 8, wherein two sliding rails 3 are arranged on the base plate 1, a limiting plate 10 fixedly connected with the base plate 1 is arranged at the rear of each sliding rail 3, the conveying trolley 2 is slidably connected with the sliding rails 3, the hot melting furnace 5 and the pipe expanding die 6 are fixedly connected onto the base plate 1 through a base 4, the pipe expanding die 6 is fixedly connected onto the rear side of the hot melting furnace 5, a pipe expanding cone 13 is fixedly arranged at the inner center of the pipe expanding die 6, the motor 8 is fixedly connected onto the base plate 1 and is connected with a screw 9 on an output shaft of the motor, a driving block 11 is fixedly connected onto the middle of the bottom of the conveying trolley 2, the driving block 11 is in threaded connection with the screw 9, two groups of fixing rings 7 for fixing the lower pipe 01 are arranged on the conveying trolley 2, and bolts 12 for opening the closing rings are arranged on the fixing rings 7.
When the pipe is expanded, the original lower pipe 01 is fixed on the conveying trolley 2 through the fixing ring 7, then the motor 8 drives the conveying trolley 2 to drive the lower pipe 01 to enable the front end to be inserted into the hot melting furnace 5, after heating for a period of time, the front end of the lower pipe 01 is softened, then the motor 8 drives the conveying trolley 2 to drive the lower pipe 01 to continuously advance, the front end of the lower pipe 01 is inserted into the pipe expanding mould 6, the pipe expanding cone 13 deforms into an outer expanding pipe sleeve 04 under the action of the pipe expanding cone 13, after the pipe expanding cone 13 is cooled and shaped, the motor 8 drives the conveying trolley 2 to retract the lower pipe 01, then the bolt 12 is unscrewed, and the lower pipe 01 is taken out.
Specific embodiments and principles:
as shown in fig. 1, in the first step, a pipe expanding operation is performed on a connection port of a lower pipe 01 through a pipe expanding mechanism, the connection port of the lower pipe 01 is changed into an outer pipe expanding sleeve 04, the inner diameter of the outer pipe expanding sleeve 04 is larger than or equal to the outer diameter of an upper pipe 03, and meanwhile, the outer diameter of the outer pipe expanding sleeve 04 is smaller than the inner diameter of a connection through hole of a middle cover 02; when the pipe is expanded, the original lower pipe 01 is fixed on the conveying trolley 2 through the fixing ring 7, then the motor 8 drives the conveying trolley 2 to drive the lower pipe 01 to enable the front end to be inserted into the hot melting furnace 5, after heating for a period of time, the front end of the lower pipe 01 is softened, then the motor 8 drives the conveying trolley 2 to drive the lower pipe 01 to continuously advance, the front end of the lower pipe 01 is inserted into the pipe expanding mould 6, the pipe expanding cone 13 deforms into an outer expanding pipe sleeve 04 under the action of the pipe expanding cone 13, after the pipe expanding cone 13 is cooled and shaped, the motor 8 drives the conveying trolley 2 to retract the lower pipe 01, then the bolt 12 is unscrewed, and the lower pipe 01 is taken out. Wherein the tube expanding mechanism is shown in fig. 3-6.
As shown in fig. 1, in the second step, the outer expansion pipe sleeve 04 is slit in the vertical direction, and a plurality of equidistant buffer slits 05 are cut by a cutting machine, wherein the number of the buffer slits 05 is 4 or 6, and the optimal number is 4.
Thirdly, fixing the lower pipe 01, the middle cover 02 and the upper pipe 03 on a welding table in sequence from bottom to top, wherein the lower pipe 01 is inserted into a lower pipe groove 16, then the middle cover 02 is sleeved on an outer expansion pipe sleeve 04 of the lower pipe 01 from top to bottom, meanwhile, the middle cover 02 is pressed on a cover supporting table 15, the middle cover 02 and the cover supporting table 15 are kept relatively fixed through a fixed magnetic ring 17, and finally the upper pipe 03 is inserted into the outer expansion pipe sleeve 04. The structure of the soldering station is shown in fig. 7.
Fourth, as shown in fig. 2, the original connection method is that the lower pipe 01 and the upper pipe 03 are inserted into the through hole of the middle cover 02, the upper pipe 03 and the middle cover 02 are welded on the upper surface, and the lower pipe 01 and the middle cover 02 are welded on the lower surface, which is not only troublesome, but also the lower pipe 01 and the upper pipe 03 are not welded together, so that the connection strength is insufficient.
After improvement, the welding gun is aligned to the part of the middle expansion pipe sleeve 04 exposed from the upper part of the middle cover 02, and the part is melted to be connected with the middle cover 02 and the upper pipe 03, so that the connection and fixation of the lower pipe 01, the middle cover 02 and the upper pipe 03 are realized.
Based on the above, the through hole of the middle cover is sleeved outside the lower pipe only, and the lower pipe is sleeved on the upper pipe, so that the connection is firmer by sequential sleeving, and simultaneously, the middle cover, the lower pipe and the upper pipe can be automatically connected together by only hot melting the port part of the lower pipe during welding, so that the welding is more convenient, and no gap exists.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Claims (4)
1. The connecting process of the multi-junction member comprises a lower tube (01), an intermediate cover (02) and an upper tube (03), and is characterized by comprising the following steps:
step one, pipe (01) expanding is carried out on the lower pipe,
performing pipe expanding operation on the connecting port of the lower pipe (01) through a pipe expanding mechanism, and changing the connecting port of the lower pipe (01) into an outer expanding pipe sleeve (04), so that the inner diameter of the outer expanding pipe sleeve (04) is larger than or equal to the outer diameter of the upper pipe (03);
step two, slotting is carried out,
slotting the outer expansion pipe sleeve (04) in the vertical direction, and cutting a plurality of equidistant buffer slots (05) by a cutting machine;
step three, preparing for welding,
fixing a lower pipe (01), a middle cover (02) and an upper pipe (03) on a welding table in sequence from bottom to top, wherein an outer expansion pipe sleeve (04) of the lower pipe (01) penetrates through a through hole in the middle cover (02) and exposes a part of the outer expansion pipe sleeve, and the upper pipe (03) is inserted into the outer expansion pipe sleeve (04);
step four, welding is carried out,
aligning the welding gun with the part of the outer expanding sleeve (04) exposed from the upper part of the middle cover (02) in the third step, melting the part, and connecting the part with the middle cover (02) and the upper pipe (03) to realize the connection and fixation of the lower pipe (01), the middle cover (02) and the upper pipe (03);
the pipe expanding mechanism comprises a base plate (1), a conveying trolley (2), a hot melting furnace (5), a pipe expanding die (6) and a motor (8), wherein the conveying trolley (2) is connected to the base plate (1) in a sliding mode, the hot melting furnace (5) and the pipe expanding die (6) are fixedly connected to the base plate (1), the pipe expanding die (6) is fixedly connected to the rear side of the hot melting furnace (5), the motor (8) is fixedly connected to the base plate (1) and is connected with a screw rod (9) on an output shaft of the motor, the screw rod (9) is in threaded connection with the conveying trolley (2), and two groups of fixing rings (7) used for fixing a lower pipe (01) are arranged on the conveying trolley (2);
the welding table comprises a base table (14) and a cover supporting table (15), the cover supporting table (15) is fixedly connected to the upper end of the base table (14), a fixed magnetic ring (17) is arranged on the cover supporting table (15), and a through lower pipe groove (16) is formed in the centers of the base table (14) and the cover supporting table (15);
in the second step, the number of the buffer slits (05) is 4 or 6, and the depth of the buffer slits (05) is smaller than or equal to the length of the exposed part of the outer expansion pipe sleeve (04) above the middle cover (02) in the third step.
2. The process for joining multi-junction structures according to claim 1, wherein: be equipped with twice slide rail (3) on base plate (1), the rear of slide rail (3) be equipped with base plate (1) fixed connection's limiting plate (10), travelling bogie (2) sliding connection is on slide rail (3), and the bottom intermediate part fixedly connected with drive piece (11) of travelling bogie (2), drive piece (11) and screw rod (9) threaded connection.
3. The process for joining multi-junction structures according to claim 1, wherein: the hot melting furnace (5) and the pipe expanding die (6) are fixedly connected to the base plate (1) through the base (4), the front end of the screw rod (9) is rotatably connected to the base (4), and a pipe expanding cone (13) is fixedly arranged at the inner center of the pipe expanding die (6).
4. The process for joining multi-junction structures according to claim 2, wherein: the rear of the sliding rail (3) is provided with a limiting plate (10) fixedly connected with the base plate (1), and the fixed ring (7) is provided with a bolt (12) for opening and closing the ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111346788.8A CN114101953B (en) | 2021-11-15 | 2021-11-15 | Connecting process of multi-junction components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111346788.8A CN114101953B (en) | 2021-11-15 | 2021-11-15 | Connecting process of multi-junction components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114101953A CN114101953A (en) | 2022-03-01 |
| CN114101953B true CN114101953B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111346788.8A Active CN114101953B (en) | 2021-11-15 | 2021-11-15 | Connecting process of multi-junction components |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234515A (en) * | 2015-09-17 | 2016-01-13 | 芜湖三花制冷配件有限公司 | Welding process for suction and exhaust pipe of liquid accumulator |
| CN113617952A (en) * | 2021-08-12 | 2021-11-09 | 江西艾芬达暖通科技股份有限公司 | Drying rack elbow lap joint reaming forming machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201373189Y (en) * | 2009-02-17 | 2009-12-30 | 深圳雅昌管业有限公司 | Metal welding pipe joint |
| RU2397394C1 (en) * | 2009-06-26 | 2010-08-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Permanent connection of pipes with internal anti-corrosion coating |
| CN204063698U (en) * | 2014-03-31 | 2014-12-31 | 宁波奥克斯空调有限公司 | Air-conditioner connecting pipings structure |
| CN106825269A (en) * | 2016-12-29 | 2017-06-13 | 张家港市和恒精工机械有限公司 | A kind of automatic tube expander |
| CN109773063B (en) * | 2019-03-11 | 2020-03-10 | 浙江龙腾空调有限公司 | Automatic flaring and groove-screwing forming integrated machine for automobile pipe fittings |
-
2021
- 2021-11-15 CN CN202111346788.8A patent/CN114101953B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234515A (en) * | 2015-09-17 | 2016-01-13 | 芜湖三花制冷配件有限公司 | Welding process for suction and exhaust pipe of liquid accumulator |
| CN113617952A (en) * | 2021-08-12 | 2021-11-09 | 江西艾芬达暖通科技股份有限公司 | Drying rack elbow lap joint reaming forming machine |
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| Publication number | Publication date |
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| CN114101953A (en) | 2022-03-01 |
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