CN112873866A - Ultra-large plastic pipe welding equipment for intelligent manufacturing production line - Google Patents
Ultra-large plastic pipe welding equipment for intelligent manufacturing production lineDownload PDFInfo
- Publication number
- CN112873866A CN112873866ACN202110015755.9ACN202110015755ACN112873866ACN 112873866 ACN112873866 ACN 112873866ACN 202110015755 ACN202110015755 ACN 202110015755ACN 112873866 ACN112873866 ACN 112873866A
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- guide rail
- assembly
- intelligent manufacturing
- base
- welding equipment
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- 238000004519manufacturing processMethods0.000titleclaimsabstractdescription29
- 238000003466weldingMethods0.000titleclaimsabstractdescription28
- 238000002844meltingMethods0.000claimsabstractdescription20
- 230000008018meltingEffects0.000claimsabstractdescription20
- 238000005520cutting processMethods0.000claimsdescription19
- 230000002457bidirectional effectEffects0.000claimsdescription10
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- 239000010432diamondSubstances0.000claimsdescription9
- QNRATNLHPGXHMA-XZHTYLCXSA-N(r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochlorideChemical compoundCl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21QNRATNLHPGXHMA-XZHTYLCXSA-N0.000claimsdescription5
- 239000012943hotmeltSubstances0.000claimsdescription5
- 230000004927fusionEffects0.000abstractdescription5
- 210000001503jointAnatomy0.000abstractdescription2
- 230000005540biological transmissionEffects0.000description5
- 230000000694effectsEffects0.000description4
- 238000010586diagramMethods0.000description2
- 229910000838Al alloyInorganic materials0.000description1
- 239000002131composite materialSubstances0.000description1
- 230000007547defectEffects0.000description1
- 238000010438heat treatmentMethods0.000description1
- 239000007788liquidSubstances0.000description1
- 239000002905metal composite materialSubstances0.000description1
- 238000000034methodMethods0.000description1
- 238000012986modificationMethods0.000description1
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- 238000006467substitution reactionMethods0.000description1
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Classifications
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
- B29C66/02241—Cutting, e.g. by using waterjets, or sawing
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
Technical Field
The invention relates to welding equipment, in particular to ultra-large plastic pipe welding equipment for an intelligent manufacturing production line.
Background
The hot-melt connection is widely applied to connection of novel pipes such as PP-R pipes, PB pipes, PE-RT pipes, metal composite pipes, curved elastic vector aluminum alloy lining plastic composite pipeline systems and the like and pipe fittings, and is a connection mode after heating to a liquid melting point.
At present, the plastic pipes are usually butted manually by adopting a hot melting method, when a large plastic pipe is welded, a plurality of people are required to hold the plastic pipe for butting, the labor is consumed, and the pressure is difficult to control during manual butting, so that the strength of a welded part is low, and the welding quality is poor.
Therefore, the ultra-large plastic pipe welding equipment for the intelligent manufacturing production line needs to be developed, which saves labor, is convenient to control the butt joint force during welding and ensures the welding quality.
Disclosure of Invention
(1) Technical problem to be solved
The invention aims to overcome the defects that more manpower is consumed when plastic pipes are butted manually at present, and the welding quality is poor due to the fact that the pressure is difficult to control when the plastic pipes are butted manually, and the technical problem to be solved is to provide the ultra-large plastic pipe welding equipment for the intelligent manufacturing production line, which is labor-saving, convenient to control the butting force during welding and capable of ensuring the welding quality.
(2) Technical scheme
In order to solve the above technical problems, the present invention provides an ultra-large plastic pipe fusion apparatus for an intelligent manufacturing line, comprising: one side of the top of the base is connected with a first guide rail; a moving assembly connected between the base and the first guide rail; a clamping assembly connected to the moving assembly; and the hot melting assembly is connected to the base.
Preferably, the moving assembly comprises: a first slide rail slidably connected to one side of the first guide rail; the second sliding rail is connected to the other side of the first guide rail in a sliding manner; the bidirectional threaded rod is rotatably connected to the base, and the first sliding rail and the second sliding rail are in threaded connection with the bidirectional threaded rod; and the two annular sliding blocks are respectively and rotatably connected to the first sliding rail and the second sliding rail.
Preferably, the clamping assembly comprises: the first supporting plate is connected to the lower part of the annular sliding block; the arc-shaped clamping plate is connected to the top of the first supporting plate in a sliding mode; the screw rod is connected between the arc-shaped clamping plate and the first supporting plate; and the two second supporting plates are connected to two sides of the first guide rail in a sliding manner respectively and are connected with the first slide rail and the second slide rail respectively.
Preferably, the hot melt assembly comprises: the second guide rail is connected to the base; the first limiting rod is connected to one end of the second guide rail; the second limiting rod is connected to the other end of the second guide rail; a slide plate slidably coupled to the second guide rail; and the hot melting device is connected to one side of the bottom of the sliding plate.
Preferably, also include cutting assembly, cutting assembly includes: the mounting rack is connected to the bottom of the sliding plate; a double-shaft motor installed on the mounting frame; and two cutting disks are arranged and are respectively connected to two output shafts of the double-shaft motor.
Preferably, the device further comprises a rotating assembly, wherein the rotating assembly comprises: the two fixing plates are respectively connected to two sides of the base; a shaft rod rotatably connected between the fixing plates at both sides; the two connecting plates are respectively connected to the first sliding rail and the second sliding rail; a diamond-shaped rod rotatably connected to the connection plate; the gear ring is connected to the outer side of the annular slide block; the driving gear is connected to one end of the diamond-shaped rod and meshed with the gear ring; the inner rhombic sleeve is rotatably connected to the fixing plate and sleeved outside the rhombic rod; the belt transmission set is connected between the inner diamond-shaped sleeve and the shaft rod; and the speed reducing motor is arranged on one side of the top of the base, and an output shaft of the speed reducing motor is connected with one of the inner diamond-shaped sleeves.
Preferably, the front end of the bidirectional threaded rod is connected with a knob.
Preferably, the gear ratio of the ring gear to the drive gear is 2: 1.
(3) Advantageous effects
1. The plastic pipe welding device can clamp two welded plastic pipes through the clamping assembly, can perform hot melting on the end parts of the plastic pipes through the hot melting assembly, can drive the plastic pipes to be welded to be away from or close to each other through the moving assembly, is convenient to move the plastic pipes, and can ensure the welding effect.
2. Two plastic pipe ends of the plastic pipe which can be subjected to hot melting can be cut through the cutting assembly, so that the flatness of the welding end of the plastic pipe is guaranteed, and the hot melting effect is improved.
3. Can drive the plastic tubing through rotating assembly and rotate, do not need artifical manual rotation plastic tubing, reduce artificial intensity of labour, improve the cutting and the butt fusion efficiency of plastic tubing moreover.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is a diagram of a first partial body structure of the present invention.
FIG. 3 is a diagram of a second partial body structure according to the present invention.
Fig. 4 is a third partial perspective view of the present invention.
The labels in the figures are: 1-base, 2-first guide rail, 3-moving component, 31-first guide rail, 32-second guide rail, 33-bidirectional threaded rod, 34-annular slide block, 5-clamping component, 51-first supporting plate, 52-arc clamping plate, 53-screw rod, 54-second supporting plate, 6-hot melting component, 61-second guide rail, 62-first limiting rod, 63-second limiting rod, 64-sliding plate, 65-hot melting device, 7-cutting component, 71-mounting frame, 72-double-shaft motor, 73-cutting disc, 8-rotating component, 81-fixing plate, 82-shaft rod, 83-connecting plate, 84-diamond rod, 85-gear ring, 86-driving gear, 87-inner diamond sleeve, 88-belt transmission group, 89-speed reducing motor and 100-plastic tube.
Detailed Description
The invention is further described below with reference to the figures and examples.
Example 1
The utility model provides a super large-scale plastic tubing butt fusion equipment for intelligent manufacturing production line, as shown in figure 1, figure 2 and figure 4, includingbase 1,first guide rail 2,removal subassembly 3,clamping component 5 andhot melt subassembly 6,base 1 top left side is connected with twofirst guide rails 2, is connected withremoval subassembly 3 betweenbase 1 and thefirst guide rail 2, is connected withclamping component 5 on theremoval subassembly 3, andbase 1 top intermediate junction hashot melt subassembly 6.
Themoving assembly 3 comprises afirst slide rail 31, asecond slide rail 32, a two-way threadedrod 33 and an annularsliding block 34, thefirst slide rail 31 is connected between the rear sides of the twofirst guide rails 2 in a sliding manner, thesecond slide rail 32 is connected between the front sides of the twofirst guide rails 2 in a sliding manner, the two-way threadedrod 33 is connected to the left side of the top of thebase 1 in a rotating manner, the front end of the two-way threadedrod 33 is connected with a knob, thefirst slide rail 31 and thesecond slide rail 32 are both in threaded connection with the two-way threadedrod 33, and the annular slidingblock 34 is connected to thefirst slide rail 31 and the second slide rail.
Theclamping assembly 5 comprises a first supportingplate 51, an arc-shaped clamping plate 52, ascrew 53 and a second supportingplate 54, the lower part of the annular slidingblock 34 is connected with the first supportingplate 51, the top of the first supportingplate 51 is connected with the arc-shaped clamping plate 52 in a sliding manner, thescrew 53 is connected between the arc-shaped clamping plate 52 and the left end of the first supportingplate 51 in a threaded connection manner, the second supportingplate 54 is connected between the twofirst guide rails 2 in a sliding manner at the front side and the rear side, the second supportingplate 54 at the rear side is connected with thefirst slide rail 31, and the second supportingplate 54 at the front side is connected with thesecond slide rail 32.
Thehot melting assembly 6 comprises asecond guide rail 61, a first limitingrod 62, a second limitingrod 63, asliding plate 64 and ahot melting device 65, thesecond guide rail 61 is connected between the left side and the right side of thebase 1, the left end of thesecond guide rail 61 is connected with the first limitingrod 62, the right end of thesecond guide rail 61 is connected with the secondlimiting rod 63, thesecond guide rail 61 is connected with thesliding plate 64 in a sliding mode, thesliding plate 64 is located between the secondlimiting rod 63 and the first limitingrod 62, and the right side of the bottom of thesliding plate 64 is connected with thehot melting device 65.
When a largeplastic pipe 100 needs to be welded, thehot melter 65 is started to heat, thescrew 53 is unscrewed, the arc-shaped clamping plates 52 on the front side and the rear side are pulled to move upwards, then the twoplastic pipes 100 are respectively placed between the first supportingplate 51 and the second supportingplate 54 on the two sides, theplastic pipe 100 is positioned in the annular slidingblock 34, then the arc-shaped clamping plates 52 are loosened, thescrew 53 is screwed, theplastic pipe 100 is clamped through the arc-shaped clamping plates 52, then thesliding plate 64 is pushed to move leftwards, thesliding plate 64 moves leftwards to drive thehot melter 65 to move leftwards, when thesliding plate 64 is contacted with the first limitingrod 62, a manual worker drives the bidirectional threadedrod 33 to rotate through rotating a knob, the bidirectional threadedrod 33 rotates to drive the first slidingrail 31 and the second slidingrail 32 to approach each other, the twoplastic pipes 100 also approach together, when theplastic pipe 100 is contacted with thehot melter 65, then, the knob is turned reversely, the bidirectional threadedrod 33 drives thefirst slide rail 31 and thesecond slide rail 32 to be away from each other by a short distance, thesliding plate 64 is pulled to move rightwards, the knob is screwed, the bidirectional threadedrod 33 drives thefirst slide rail 31 and thesecond slide rail 32 to be close to each other, the end parts of theplastic pipes 100 on the two sides are contacted, and therefore theplastic pipes 100 can be subjected to hot melting. After theplastic pipe 100 is cooled for a period of time, thescrew 53 is loosened, and the arc-shaped clamping plate 52 no longer clamps theplastic pipe 100, so that the weldedplastic pipe 100 can be taken out.
Example 2
On the basis ofembodiment 1, as shown in fig. 4, the cutting device further comprises acutting assembly 7, thecutting assembly 7 comprises a mounting frame 71, a double-shaft motor 72 and acutting disc 73, the mounting frame 71 is connected to the left side of the bottom of thesliding plate 64, the double-shaft motor 72 is connected to the bottom of the mounting frame 71, and thecutting disc 73 is connected to two output shafts of the double-shaft motor 72.
Whenplastic tubing 100 is fixed whenfirst layer board 51 andarc splint 52 are inboard, start the work ofbiax motor 72, the work ofbiax motor 72drives cutting disc 73 and rotates, thenartifical promotion slide 64 removes left, cut the tip ofplastic tubing 100 throughcutting disc 73, when cuttingplastic tubing 100, the artifical rotatableplastic tubing 100,plastic tubing 100 rotates and drivesfirst layer board 51,arc splint 52 andannular slider 34 are rotatory, so can cut offplastic tubing 100 completely, so can guarantee that the 100 tip of welded plastic tubing levels, improve the butt fusion effect. After theplastic pipe 100 is cut, thesliding plate 64 is pushed to move leftwards, and thehot melting device 65 is driven leftwards to perform hot melting on theplastic pipe 100.
Example 3
On the basis ofembodiment 2, as shown in fig. 3, the present invention further comprises arotating assembly 8, therotating assembly 8 comprises afixing plate 81, ashaft rod 82, a connectingplate 83, adiamond rod 84, agear ring 85, adriving gear 86, aninner diamond sleeve 87, a belt transmission set 88 and areduction motor 89, thefixing plate 81 is connected to the front side and the rear side of the middle portion of thebase 1, theshaft rod 82 is rotatably connected between the lower portions of thefixing plates 81 on the two sides, the connectingplate 83 is connected to the right ends of thefirst slide rail 31 and thesecond slide rail 32, thediamond rod 84 is rotatably connected to the connectingplate 83, thegear ring 85 is connected to the outer side of theannular slider 34, one end of thediamond rod 84 is connected to thedriving gear 86, thedriving gear 86 is engaged with thegear ring 85, theinner diamond sleeve 87 is rotatably connected to the upper portion of thefixing plate 81, the, aspeed reducing motor 89 is installed on the rear side of the top of thebase 1, and an output shaft of thespeed reducing motor 89 is connected with an inner diamond-shaped sleeve 87 on the rear side.
When theplastic pipe 100 needs to be rotated, thespeed reducing motor 89 is started, thespeed reducing motor 89 rotates to drive the inner diamond-shaped sleeve 87 at the rear side to rotate, theshaft rod 82 is driven to rotate under the action of thebelt transmission group 88 at the rear side, the inner diamond-shaped sleeve 87 at the front side is driven to rotate under the action of thebelt transmission group 88 at the front side, so that the diamond-shaped rods 84 at the front side and the rear side can rotate, the diamond-shaped rods 84 rotate to drive thedrive gear 86 to rotate, thedrive gear 86 rotates to drive thegear ring 85 to rotate, thegear ring 85 rotates to drive theannular slide block 34 to rotate, so that theplastic pipe 100 can be driven to rotate, theplastic pipe 100 does not need to be manually rotated, the labor intensity. When thefirst slide rail 31 and thesecond slide rail 32 move, the connectingplate 83 and the diamond-shaped rod 84 move along with the first slide rail, and the diamond-shaped rod 84 slides in the inner diamond-shaped sleeve 87, so that the diamond-shaped rod 84 and the inner diamond-shaped sleeve 87 can be always kept in fit.
The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides a super large-scale plastic tubing welding equipment for intelligent manufacturing production line which characterized in that, including:
one side of the top of the base (1) is connected with a first guide rail (2);
a moving assembly (3) connected between the base (1) and the first guide rail (2);
a clamping assembly (5) connected to the moving assembly (3);
and the hot melting assembly (6) is connected to the base (1).
2. The welding plant for very large plastic pipes for intelligent manufacturing lines according to claim 1, characterized in that the moving assembly (3) comprises:
a first slide rail (31) slidably connected to one side of the first guide rail (2);
a second slide rail (32) slidably connected to the other side of the first guide rail (2);
the bidirectional threaded rod (33) is rotatably connected to the base (1), and the first sliding rail (31) and the second sliding rail (32) are in threaded connection with the bidirectional threaded rod (33);
and two annular sliding blocks (34) are arranged, and the two annular sliding blocks (34) are respectively and rotatably connected to the first sliding rail (31) and the second sliding rail (32).
3. The welding equipment for very large plastic pipes for intelligent manufacturing lines according to claim 2, wherein the clamping assembly (5) comprises:
a first pallet (51) connected to the lower part of the annular slider (34);
an arc-shaped clamping plate (52) which is connected to the top of the first supporting plate (51) in a sliding way;
a screw (53) connected between the arc-shaped clamping plate (52) and the first supporting plate (51);
and two second supporting plates (54) are arranged, the two second supporting plates (54) are respectively connected to two sides of the first guide rail (2) in a sliding manner, and the two second supporting plates (54) are respectively connected with the first slide rail (31) and the second slide rail (32).
4. The welding equipment for very large plastic pipes used in intelligent manufacturing lines according to claim 3, wherein the hot-melt assembly (6) comprises:
a second guide rail (61) connected to the base (1);
a first stopper rod (62) connected to one end of the second guide rail (61);
a second limit rod (63) connected to the other end of the second guide rail (61);
a slide plate (64) slidably connected to the second guide rail (61);
and a thermal melter (65) connected to one side of the bottom of the slide plate (64).
5. The welding equipment for the ultra-large plastic pipes used in the intelligent manufacturing production line according to claim 4, further comprising a cutting assembly (7), wherein the cutting assembly (7) comprises:
a mounting bracket (71) connected to the bottom of the slide plate (64);
a biaxial motor (72) mounted on the mounting bracket (71);
and two cutting disks (73) are arranged, and the two cutting disks (73) are respectively connected to two output shafts of the double-shaft motor (72).
6. The welding equipment for the ultra-large plastic pipes used in the intelligent manufacturing line according to claim 5, further comprising a rotating assembly (8), wherein the rotating assembly (8) comprises: two fixing plates (81) are arranged, and the two fixing plates (81) are respectively connected to two sides of the base (1);
a shaft rod (82) rotatably connected between the fixing plates (81) on both sides;
the two connecting plates (83) are arranged, and the two connecting plates (83) are respectively connected to the first sliding rail (31) and the second sliding rail (32);
a diamond-shaped rod (84) rotatably connected to the connecting plate (83);
a ring gear (85) connected to the outside of the annular slider (34);
a drive gear (86) connected to one end of the diamond-shaped rod (84), the drive gear (86) meshing with the ring gear (85);
the inner rhombic sleeve (87) is rotatably connected to the fixing plate (81), and the inner rhombic sleeve (87) is sleeved on the outer side of the rhombic rod (84);
a belt drive group (88) connected between the inner diamond sleeve (87) and the shaft (82);
and the speed reducing motor (89) is arranged on one side of the top of the base (1), and an output shaft of the speed reducing motor (89) is connected with one of the inner diamond sleeves (87).
7. The ultra-large plastic pipe welding equipment for the intelligent manufacturing production line according to claim 6, wherein a knob is connected to the front end of the bidirectional threaded rod (33).
8. The very large plastic pipe welding apparatus for intelligent manufacturing lines as recited in claim 7, wherein the gear ratio of the ring gear (85) and the driving gear (86) is 2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110015755.9ACN112873866A (en) | 2021-01-07 | 2021-01-07 | Ultra-large plastic pipe welding equipment for intelligent manufacturing production line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110015755.9ACN112873866A (en) | 2021-01-07 | 2021-01-07 | Ultra-large plastic pipe welding equipment for intelligent manufacturing production line |
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| Publication Number | Publication Date |
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| CN112873866Atrue CN112873866A (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110015755.9APendingCN112873866A (en) | 2021-01-07 | 2021-01-07 | Ultra-large plastic pipe welding equipment for intelligent manufacturing production line |
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| CN117698147A (en)* | 2023-12-28 | 2024-03-15 | 杭州飞腾管业有限公司 | MPP power tube fusion device |
| CN118269360A (en)* | 2024-05-31 | 2024-07-02 | 贵州玉蝶电工股份有限公司 | High-density polyethylene pipe fitting pipe splicing device |
| CN118269360B (en)* | 2024-05-31 | 2024-08-16 | 贵州玉蝶电工股份有限公司 | High-density polyethylene pipe fitting pipe splicing device |
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