CN206085620U - Produce rectangular cooling vacuum system who moulds piece - Google Patents
Produce rectangular cooling vacuum system who moulds piece Download PDFInfo
- Publication number
- CN206085620U CN206085620U CN201620604684.0U CN201620604684U CN206085620U CN 206085620 U CN206085620 U CN 206085620U CN 201620604684 U CN201620604684 U CN 201620604684U CN 206085620 U CN206085620 U CN 206085620U
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- Prior art keywords
- cooling
- vacuum
- tube
- pipe
- vertical tube
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- Expired - Fee Related
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Abstract
The utility model discloses a produce rectangular cooling vacuum system who moulds piece, including frame and vacuum cooling system, vacuum cooling system includes vacuum generator, cooling pump, vacuum pipe, cooling pipe, vacuum tube and cooling tube, the vacuum tube includes that vacuum standpipe and vacuum violently manage, the cooling pipe is violently managed including cooling standpipe and cooling, be equipped with the vacuum connector on the vacuum pipe, the vacuum tube is connected on the connector of vacuum, be equipped with the cooling connector on the cooling pipe, the cooling tube is connected on the cooling connector, the vacuum standpipe sets up with the cooling standpipe relatively, cools off horizontal piping support and lives the vacuum and violently manage, the winding has the evaporator tube on the outer wall that the cooling was violently managed, and the compressor is connected to the output of evaporator tube, and the condenser is connected to the output of compressor, and the output of condenser passes through the choke valve and connects the evaporator tube. This system can be better the temperature of control cooling water, and can reach energy -conserving purpose again, can let more even of temperature of cooling water simultaneously.
Description
Technical field
This utility model is related to the equipment for producing strip plastic, especially cooling vacuum system.
Background technology
Strip plastic refers to the plastic of Jing coolings, cut-out after extruder is extruded.Which primarily serves the effect of supporting.
Strip plastic is plastic, and cooling is needed during molding, if cooling technique is incorrect, becoming easily occurs in strip plastic
The phenomenon of shape.
The existing cooling to strip plastic is directly to be realized by cooling water, i.e., be pumped into cooling water by water pump
In tank, strip plastic is being cooled during tank, but adopts this cooling technique, and cooling water determines cooling
Effect, the bad control of temperature of one side cooling water, the cooling effect of another aspect cooling water are limited.
The content of the invention
In order to be able to the temperature of more preferable control cooling water, and and can reach the purpose of energy-conservation, while the temperature of cooling water can allow
Degree is more uniform, and this utility model provides a kind of cooling vacuum system for producing strip plastic.
To reach above-mentioned purpose, a kind of cooling vacuum system for producing strip plastic, including frame and vacuum cooled system
System；Described vacuum cooling system includes vacuum generator, cooling pump, vacuum pipe, cooling pipe, vacuum tube and cooling tube；
Vacuum generator and cooling pump are arranged in frame；Vacuum tube includes vacuum vertical tube and vacuum transverse tube, and vacuum pipe is L-shaped, very
Empty vertical tube is fixed on the wherein side of frame and the rear end near frame；Cooling pipe includes cooling down vertical tube and cooling transverse tube, cold
But pipeline is L-shaped, cools down wherein side and the rear end near frame that vertical tube is fixed on frame；Vacuum is provided with vacuum pipe
Union joint, vacuum tube are connected on bonding in vacuum head；Cooling union joint is provided with cooling pipe, cooling tube is connected to cooling and connects
On joint；Vacuum vertical tube and cooling vertical tube are oppositely arranged, and cooling transverse tube supports vacuum transverse tube；Twine on the outer wall of cooling transverse tube
It is wound with evaporator tube, the outfan connection compressor of evaporator tube, the outfan connection condenser of compressor, the output of condenser
End connects evaporator tube by choke valve.
Said structure, due to being wound with evaporator tube on the outer wall of cooling transverse tube, when cooling water is connected by cooling pump Jing
After adapter is pumped in cooling pipe, compressor can be started, hot friendship is carried out with the cooling water in cooling pipe by evaporator tube
Change, can further reduce the temperature of cooling water.In addition, by the temperature of evaporator tube be it is controllable, therefore, can be according to cooling
Require to adjust the temperature in evaporator tube, so as to reach the temperature for adjusting the cooling water that Jing cooling tubes spray, so can also reach
The purpose of energy-conservation；In addition, being wound with evaporator tube on the outer wall of cooling transverse tube, so, the temperature of cooling water can be allowed more equal
It is even, improve cooling effect.Vacuum vertical tube and cooling vertical tube are oppositely arranged, and cooling transverse tube supports vacuum transverse tube, so, vacuum tube
The fixation of road and cooling pipe is more reliable, stable.
Further, vacuum transverse tube is blind end near one end of cooling vertical tube；Transverse tube is cooled down near the one of vacuum vertical tube
Hold as blind end.Cooling water and vacuum leak can be prevented.
Further, be provided with bonding in vacuum plug in the lower end of vacuum vertical tube, vacuum vertical tube and bonding in vacuum plug it
Between be provided with first and keep out plate；Cooling vertical tube lower end be provided with cooling connection plug, cooling vertical tube and cooling connection plug it
Between be provided with second and keep out plate.Due to being provided with bonding in vacuum plug, therefore, it is convenient that vacuum generator is connected to by connecting tube
On bonding in vacuum plug, simultaneously because being provided with first keeps out plate, accordingly, it is capable to carry out to the insertion depth of connecting tube spacing.By
Connect plug in cooling is provided with, therefore, it is convenient that cooling pump is connected on cooling connection plug by connecting tube, simultaneously because
It is provided with second and keeps out plate, accordingly, it is capable to carries out to the insertion depth of connecting tube spacing.
Description of the drawings
Axonometric charts of the Fig. 1 for cooling device.
Axonometric charts of the Fig. 2 for another visual angle of cooling device.
Exploded views of the Fig. 3 for cooling device.
Axonometric charts of the Fig. 4 for frame.
Axonometric charts of the Fig. 5 for afflux gathering sill.
Fig. 6 is the axonometric chart of the chiller for removing vacuum cooling system.
Fig. 7 is the exploded view of the chiller for removing vacuum cooling system.
Fig. 8 is the schematic diagram of spacing connecting plate.
Schematic diagrams of the Fig. 9 for cooling and shaping device.
Exploded views of the Figure 10 for cooling and shaping device.
The schematic diagram of Figure 11 cooling systems.
Specific embodiment
With reference to the accompanying drawings and detailed description this utility model is further elaborated.
As shown in Figure 1 to Figure 3, the cooling device 100 for producing strip plastic includes frame 10, afflux gathering sill 11, cold
But device 12 and vacuum cooling system 13.Wherein, frame 10 and vacuum cooling system constitute production strip of the present utility model
The cooling vacuum system of plastic.
As shown in figure 4, frame 10 includes longeron 101, crossbeam 102 and column 103；In the horizontal direction, in addition to top
Adjacent longeron 101 between be connected with crossbeam 102；In vertical direction, column 103 is connected between adjacent longeron 101；
The accommodation space 104 of longitudinal extension is formed between two longerons at top.
Shrouding is installed on the side wall of frame 10（It is not shown）.
As shown in figure 5, described afflux gathering sill 11 includes base plate 111, is folded upward at what is extended from the both sides of base plate 111
The flange plate 113 that side plate 112 and the top edge outward bending from side plate 112 extend, base plate 111 and side plate 112 are located at accommodating sky
In, flange plate 113 is arranged on the longeron at top；Afflux pilot hole 114 is provided with base plate 111.Due to being provided with afflux
Gathering sill 11, therefore, the water flowed out from cooling bath is entered directly in afflux gathering sill 11, and by the collection of afflux gathering sill
In the stream backflow screw clamp of pilot hole 114, use for vacuum cooling system, realize the circulation of cooling water, reduce the wave to cooling water
Take.Due to being provided with flange plate 113, stringer supporting of the flange plate 113 by top, accordingly, it is capable to realize to afflux gathering sill 11
Positioning.As shown in figure 5, the lead column 115 of more than two is provided with base plate 111.
As shown in Fig. 1 to Fig. 3, Fig. 6 and Fig. 7, described chiller 12 include cooling support frame 121, cooling bath 122,
Cooling and shaping device 123 and elevating mechanism 124.
As shown in fig. 7, cooling support frame 121 includes cooling down longeron 1211 and cooling cross beam 1212,1211 He of longeron is cooled down
Cooling cross beam 1212 is channel-section steel.Being located on cooling longeron 1211 for 1212 activity of cooling cross beam, is provided with cooling longeron 1211
The waist type groove 1213 of longitudinal extension, is provided with laterally corresponding to the waist type groove position on cooling longeron 1211 in cooling cross beam 1212
The waist type groove 1214 of extension, the waist type groove on cooling longeron 1211 and cooling cross beam 1212 is passed through bolt 1215, bolt
1215 are provided with locking nut 1216.Locking nut 1216 is such as unclamped, is all provided with 1211 cooling cross beam 1212 of longeron due to cooling down
Have waist type groove, so, cooling cross beam 1212 can be moved relative to cooling longeron 1211, before and after reaching regulation cooling cross beam 1212 and
The purpose of right position；Such as tighten locking nut 1216, cooling cross beam 1212 is limited relative to moving with cooling longeron 1211.
As shown in fig. 7, being provided with guide pin bushing 1217 in the bottom of cooling longeron 1211, guide pillar 115 is inserted in guide pin bushing 1217, when
When cooling support frame 121 moves up and down, guide pillar 115 and guide pin bushing 1217 can play a part of guiding, allow cooling support frame about 121
The high precision of motion.
As shown in fig. 7, described cooling bath 122 include the cooling bottom plate 1221 being connected with each other, from cooling bottom plate 1221
The upwardly extending cooling side plate 1222 in both sides and spacing connecting plate 1223.Cooling bottom plate 1221 and cooling side plate 1222 form cooling
Tank 1224, cooling bottom plate 1221 are fixed in cooling cross beam 1212；Junction between adjacent cooling bottom plate and adjacent cold
But the first draw-in groove 1225 is provided with the inside of side plate junction.
As shown in figure 8, described spacing connecting plate 1223 include bottom fastening part 12231, side fastening part 12232, from
When fastening part 12231 upwardly extending bottom in bottom is kept out the side extended internally while 12233 and from side fastening part and is kept out
12234；The thickness of bottom fastening part 12231 keeps out the thickness on side 12233 more than bottom, and the thickness of side fastening part 12232 is big
The thickness on side 12234 is kept out in side；Bottom fastening part 12231 and 12232 holding of side fastening part are in the first draw-in groove 1225；
Described water-carrying groove 12235 is formed between keeping out when 12233 and side are kept out 12234 on bottom.Cooling side plate and spacing connection
Screw is connected between plate（It is not shown）.Therefore, cooling bottom plate 1221 can be improved with cooling bottom plate 1221 and cooling side plate
Bonding strength between 1222 and cooling side plate 1222.
The thickness of described bottom fastening part 12231 and side fastening part 12232 keeps out side 12233 and side more than bottom
Side 12234 is kept out, therefore, after bottom fastening part 12231,12232 holding of side fastening part are in the first draw-in groove 1225, holding
Intensity it is high, the installation reliability of spacing connecting plate 1223 is good, and easily spacing connecting plate 1223 is positioned.As bottom is supported
The inner side that cooling bath is protruded on side 12234 is kept out in rib 12233 and side, when cooling water flows in cooling bath, can reduce cold
But the flowing velocity of water, improves the cooling effect to strip plastic.
As shown in Figure 9 and Figure 10, described cooling and shaping device 123 includes lower shaped block 1231,1232 and of upper shaped block
Clamping screw 1233；Lower shaped block 1231 have lower fixed slot 12311, have in upper shaped block 1232 on fixed slot 12321；
Upper locating piece 1232 is connected by clamping screw 1233 with lower locating piece 1231.The upper fixed slot of upper locating piece 1232 and lower positioning
The lower fixed slot of block 1231 forms fixed slot 1234；The side of lower fixed slot 12311 is located in the upper surface of lower shaped block 1231
Locating slot 1235 is provided with, locating slot 1235 is triangular in shape, is provided with corresponding with locating slot fixed in the lower surface of upper shaped block 1232
Position raised 1236,1236 holding of positioning convex is in locating slot 1235.The second draw-in groove is provided with the inwall of cooling bath 122
1226, the edge holding of cooling and shaping device 123 is in the second draw-in groove 1226.In this utility model, cooling and shaping device 123
In fixed slot 1234 strip plastic is shaped, can prevent strip plastic deform.It is cold for holding due to being provided with
But the second draw-in groove 1226 of shaping equipment 123, therefore, it is convenient that cooling and shaping device 123 is installed, it is also convenient for changing cooling and shaping dress
123 are put, and cooling and shaping device 123 is not easily moveable.As cooling and shaping device of the present utility model 123 is by lower shaped block
1231 and upper shaped block 1232 constitute, therefore, be easy to process cooling and shaping device 123, due to being provided with locating slot 1235 and fixed
Position raised 1236, on the one hand can position to upper shaped block 1232, on the other hand can prevent arranged in dislocation.
As shown in fig. 7, described elevating mechanism 124 includes down fixing rack 1241, lift adjustment nut（It is not shown）, rise
Falling tone section screw mandrel 1242, lift adjustment seat 1243, lift adjustment bearing block 1244 and lift adjustment bearing 1245；Down fixing rack
1241 are fixed in frame 10, and lift adjustment nut is fixed on down fixing rack 1241, is located on down fixing rack 1241
Lifting fairlead 1246 is welded with above lift adjustment nut, lift adjustment screw mandrel 1242 passes through lift adjustment nut and lifting
Fairlead 1246 is simultaneously engaged with lift adjustment nut, is lifted motion of the fairlead 1246 to lift adjustment screw mandrel 1242 and is had guiding
Effect, the lower end of lift adjustment screw mandrel 1242 have two otch 12421 being oppositely arranged, and clamp for spanner etc., convenient to rotate
Lift adjustment screw mandrel 1242.The upper end of lift adjustment screw mandrel 1242 passes through afflux gathering sill, and lift adjustment seat 1243 is fixed on cold
But on bearing support 121, lift adjustment bearing block 1244 is fixed on lift adjustment seat 1243, and lift adjustment bearing 1245 is located at liter
In falling tone nodal axisn bearing 1244, the upper end of lift adjustment screw mandrel 1242 is arranged in lift adjustment bearing 1245.Rotation and lifting is adjusted
Section screw mandrel 1242, in the presence of lift adjustment nut, lift adjustment screw mandrel 1242 moves along a straight line, drive cooling support frame 121,
Cooling bath 122 moves up and down, and adjusts the upper-lower position of cooling bath 122.
Due to being provided with chiller, pumped into after cooling water to cooling bath by vacuum cooling system, extruded machine extrusion
Strip plastic gradually cooled down Jing after cooling bath, be easy to the carrying out of subsequent handling.The strip such as produced by different model
Mould part or will coordinate from different extruders, cooling bath can be adjusted.
As shown in Figure 1 to Figure 3, described vacuum cooling system 13 includes vacuum generator（It is not shown）, cooling pump（Do not show
Go out）, vacuum pipe 131, cooling pipe 132, vacuum tube（It is not shown）And cooling tube（It is not shown）；Vacuum generator and cooling pump
In frame 10；Vacuum pipe 131 includes that vacuum vertical tube and vacuum transverse tube cause vacuum pipe 131 L-shaped, vacuum pipe
The 131 wherein sides for being fixed on frame 10 and the rear end near frame 10；Bonding in vacuum is provided with the lower end of vacuum vertical tube 131 to insert
1312, first is provided between vacuum vertical tube and bonding in vacuum plug 1312 and keeps out plate 1313；Vacuum generator is by connection
Pipe is connected on this sky connection plug 1312, keeps out the insertion depth that plate 1313 limits connecting tube by first.Cooling pipe bag
Include cooling vertical tube and cooling transverse tube cause cooling pipe 132 L-shaped, cooling pipe 132 be fixed on the wherein side of frame 10 and
Near the rear end of frame 10；Cooling connection plug 1322 is provided with the lower end of cooling vertical tube, is inserted in cooling vertical tube and cooling connection
Second is provided between head and keeps out plate 1323, cooling pump is connected on cooling connection plug 1322 by connecting tube, is supported by second
Baffle plate 1323 limits the depth of connecting tube insertion；Vacuum vertical tube and cooling vertical tube are oppositely arranged, and it is horizontal that cooling transverse tube supports vacuum
Pipe, so, the fixation of vacuum pipe and cooling pipe is more reliable, stable.One end of the close cooling vertical tube of vacuum transverse tube is
Blind end；Cooling transverse tube is blind end near one end of vacuum vertical tube.Cooling water and vacuum leak can be prevented.In vacuum pipe
131 are provided with bonding in vacuum head 1311, and vacuum tube is connected on bonding in vacuum head 1311；Cooling is provided with cooling pipe 132
Union joint 1321, cooling tube are connected on cooling union joint 1321.
As shown in figure 11, evaporator tube 133 is wound with the outer wall of cooling transverse tube, the outfan of evaporator tube 133 connects
Compressor 134 is connect, the outfan connection condenser 135 of compressor 134, the outfan of condenser 135 are connected by choke valve 136
Evaporator tube 133.
Described 13 one side of vacuum cooling system provides cooling water to cooling bath, on the other hand by vac sorb to length
Bar shaped plastic is shaped.Due to being wound with evaporator tube 133 on the outer wall of cooling transverse tube, when cooling water passes through cooling pump Jing
After connecting tube is pumped in cooling pipe, compressor can be started, heat is carried out with the cooling water in cooling pipe by evaporator tube
Exchange, can further reduce the temperature of cooling water.In addition, by the temperature of evaporator tube be it is controllable, therefore, can be according to cooling
Requirement adjust temperature in evaporator tube, so as to reach the temperature for adjusting the cooling water that Jing cooling tubes spray, so can also reach
To the purpose of energy-conservation；In addition, cooling transverse tube outer wall on be wound with evaporator tube, so, can allow cooling water temperature more
Uniformly, improve cooling effect.
To being fed forward, freshly extruded temperature is high for the rear end of the strip plastic Jing cooling baths of extruded machine extrusion, therefore,
Vacuum cooling system is arranged on into the rear end of frame, is carried out by the water flowed out from the cooling tube strip plastic higher to temperature
Cooling, when strip plastic is Jing after once cooling down, temperature is reduced, as long as utilizing in cooling bath flow forward cooling water to front end
Strip plastic carries out cooling and reaches requirement, as such, it is possible to save energy.
As shown in Figure 1 to Figure 3, pulley assembly 14 is provided with the bottom of frame 10, described pulley assembly 14 includes support
141 and the pulley 142 that is located on support 141；Guide rail 15 is provided with the lower section of pulley assembly 14, pulley 142 is located on guide rail 15.
Traction bearing block 161 is fixed with frame 10, traction bearing 162 is installed in traction bearing block 161, bearing 162 is drawn
Inner ring is connected with draw bar 163, and the front end of draw bar 163 is connected with traction screw mandrel 164；Traction seat is provided with the front of frame 10
17, described traction seat 17 include drawing base plate 171 and be fixed on traction base plate 171 it is upwardly extending be parallel to each other
Bearing 172, using traction base plate 171, it is possible to increase bearing area, improves the stable shape of supporting.It is fixed between two fulcrum bearings 172
There is draw nut 165；Traction screw mandrel 164 is meshed with draw nut 165；Locking migration spiral shell is respectively equipped with fulcrum bearing 172
Female 165 screw 166, so, the draw nut that is easy for installation and removal 165, and the fix tightly solidity of draw nut 165 is good.
Traction drive mechanism is connected with traction screw mandrel 164, described traction drive mechanism includes traction drive motor and is connected to
Traction drive decelerator on traction drive motor output shaft.When traction drive motor operations, traction drive motor is by traction
Decelerator is driven to drive traction screw mandrel 164 to rotate, in the presence of draw nut 165, traction screw mandrel 164 moves along a straight line, and passes through
Traction screw mandrel 164 and draw bar 163 drive cooling device lengthwise movement on guide rail, adjust the position of cooling device.In order to anti-
Only cooling device 100 skids off guide rail 15, is welded with horizontal positive stop strip in the rear and front end of guide rail 15.
The operation principle of this utility model cooling device is：Start vacuum generator and cooling pump, cooling pump extracts cooling
To cooling pipe, the coolant Jing cooling tube in Jing cooling pipes is entered in cooling bath liquid.The strip of extruded machine extrusion
Plastic is entered in cooling bath, and through the fixed slot and water-carrying groove in cooling and shaping device, by the coolant in cooling bath
Strip plastic is cooled down；Absorption positioning is carried out to strip plastic by vacuum tube.
Claims (3)
1. a kind of cooling vacuum system for producing strip plastic, it is characterised in that：Including frame and vacuum cooling system；It is described
Vacuum cooling system include vacuum generator, cooling pump, vacuum pipe, cooling pipe, vacuum tube and cooling tube；Vacuum occurs
Device and cooling pump are arranged in frame；Vacuum tube includes vacuum vertical tube and vacuum transverse tube, and vacuum pipe is L-shaped, and vacuum vertical tube is solid
It is scheduled on the wherein side and the rear end near frame of frame；Cooling pipe includes cooling down vertical tube and cooling transverse tube, and cooling pipe is in L
Shape, cools down wherein side and the rear end near frame that vertical tube is fixed on frame；Bonding in vacuum head is provided with vacuum pipe, very
Blank pipe is connected on bonding in vacuum head；Cooling union joint is provided with cooling pipe, cooling tube is connected on cooling union joint；Very
Empty vertical tube and cooling vertical tube are oppositely arranged, and cooling transverse tube supports vacuum transverse tube；Evaporation is wound with the outer wall of cooling transverse tube
Device pipe, the outfan connection compressor of evaporator tube, the outfan connection condenser of compressor, the outfan of condenser is by section
Stream valve connection evaporator tube.
2. it is according to claim 1 production strip plastic cooling vacuum system, it is characterised in that：Vacuum transverse tube is close
One end of cooling vertical tube is blind end；Cooling transverse tube is blind end near one end of vacuum vertical tube.
3. it is according to claim 1 production strip plastic cooling vacuum system, it is characterised in that：In vacuum vertical tube
Lower end is provided with bonding in vacuum plug, is provided with first and keeps out plate between vacuum vertical tube and bonding in vacuum plug；In cooling vertical tube
Lower end is provided with cooling connection plug, and between cooling vertical tube and cooling connection plug being provided with second keeps out plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620604684.0U CN206085620U (en) | 2016-06-20 | 2016-06-20 | Produce rectangular cooling vacuum system who moulds piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620604684.0U CN206085620U (en) | 2016-06-20 | 2016-06-20 | Produce rectangular cooling vacuum system who moulds piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206085620U true CN206085620U (en) | 2017-04-12 |
Family
ID=58472220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620604684.0U Expired - Fee Related CN206085620U (en) | 2016-06-20 | 2016-06-20 | Produce rectangular cooling vacuum system who moulds piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206085620U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808148A (en) * | 2019-03-26 | 2019-05-28 | 佛山市顺德区科贝隆塑料机械有限公司 | Vacuum fast shaping platform |
| CN113954328A (en) * | 2021-11-10 | 2022-01-21 | 重庆金山洋生管道有限公司 | Method for processing large-diameter reinforced pipe |
| CN113954329A (en) * | 2021-11-10 | 2022-01-21 | 重庆金山洋生管道有限公司 | Large-diameter ribbed pipe processing equipment |
-
2016
- 2016-06-20 CN CN201620604684.0U patent/CN206085620U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808148A (en) * | 2019-03-26 | 2019-05-28 | 佛山市顺德区科贝隆塑料机械有限公司 | Vacuum fast shaping platform |
| CN113954328A (en) * | 2021-11-10 | 2022-01-21 | 重庆金山洋生管道有限公司 | Method for processing large-diameter reinforced pipe |
| CN113954329A (en) * | 2021-11-10 | 2022-01-21 | 重庆金山洋生管道有限公司 | Large-diameter ribbed pipe processing equipment |
| CN113954328B (en) * | 2021-11-10 | 2023-12-15 | 重庆金山洋生管道有限公司 | Processing method of large-caliber reinforced pipe |
| CN113954329B (en) * | 2021-11-10 | 2023-12-15 | 重庆金山洋生管道有限公司 | Processing equipment for large-caliber reinforced pipe |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20170620 |
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| CF01 | Termination of patent right due to non-payment of annual fee |