CN114589870B - Preparation process of PE (polyethylene) electric melting pipe fitting and PE electric melting pipe fitting - Google Patents
Preparation process of PE (polyethylene) electric melting pipe fitting and PE electric melting pipe fitting Download PDFInfo
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- CN114589870B CN114589870B CN202210213347.9A CN202210213347A CN114589870B CN 114589870 B CN114589870 B CN 114589870B CN 202210213347 A CN202210213347 A CN 202210213347A CN 114589870 B CN114589870 B CN 114589870B
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- injection molding
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- 238000002844 melting Methods 0.000 title claims abstract description 35
- 230000008018 melting Effects 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000004698 Polyethylene Substances 0.000 title description 19
- -1 polyethylene Polymers 0.000 title description 2
- 229920000573 polyethylene Polymers 0.000 title description 2
- 238000001816 cooling Methods 0.000 claims abstract description 99
- 238000001746 injection moulding Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000007921 spray Substances 0.000 claims abstract description 46
- 238000000465 moulding Methods 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 28
- 238000004804 winding Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 9
- 239000000110 cooling liquid Substances 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 239000002826 coolant Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000012809 cooling fluid Substances 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 description 16
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 238000000926 separation method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007605 air drying Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C2045/1486—Details, accessories and auxiliary operations
- B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C2045/7387—Heating or cooling of the mould jetting a cooling fluid onto the moulded article while still in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/18—Pleated or corrugated hoses
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a preparation process of PE electric melting pipe fittings, which comprises the following steps: step one: paying-off guide; step two: winding; step three: melting the surface; step four: injection molding; placing a mold core with a metal wire arranged outside into a mold of an injection molding machine, starting a hydraulic rod to enable a cover plate to move towards the mold, sealing a molding groove, starting the injection molding machine to enable molten fluid in an injection molding pipe to enter the molding groove through an injection molding hole for injection molding, enabling the cover plate to move outwards after molding, then starting a water pump in a cooling box to enable a top plate to move outwards by utilizing the pressure of water pressure, so that a molded model and the molding groove are automatically separated, and after the top plate moves outwards, cooling fluid is sprayed out along with an upper spray hole and a lower spray hole to spray and cool the upper part and the lower part of the molding groove simultaneously, wherein the method comprises the following steps of: water cooling and demoulding; by the design, injection molding efficiency can be effectively improved, overall yield is improved, energy sources can be fully utilized, and cost is reduced.
Description
Technical Field
The invention relates to the technical field of electric melting pipe fittings, in particular to a preparation process of a PE electric melting pipe fitting and the PE electric melting pipe fitting.
Background
The PE electrofusion pipe fitting is a plastic pipe fitting for hot-fusion connecting pipes. The structure of the electric melting pipe fitting mainly comprises a plastic pipe body, a resistance wire arranged on the inner wall of the pipe body and an electrode for electrifying the resistance wire, wherein the welding principle is that the pipe fitting and a plastic material of a connecting pipe are melted by electrifying the resistance wire to generate heat, and the pipe is welded after the pipe fitting is connected.
The Chinese patent CN110815708A discloses a production system of an electric melting pipe fitting and a process method thereof, wherein a production system of a paying-off device, a guiding device, a winding device, an injection molding machine, a water cooling tank and a demolding device is adopted, the winding device is provided with a rotary table on an operation platform, the rotary table is driven by a driving motor, three sliding grooves with I-shaped sections are arranged on the rotary table, sliding blocks are arranged in the sliding grooves, the lower parts of the sliding blocks are matched with the sliding grooves, the upper parts of the sliding blocks are fixed blocks for fixing mold cores of the electric melting pipe fitting, and the sliding blocks are controlled by manual rotating handles, so that the operation is convenient and quick; the demolding device comprises a placing table, a demolding table and a separation positioning seat arranged between the placing table and the demolding table, wherein a clamping plate is arranged on the separation positioning seat, a mold core sleeved with an electric melting pipe fitting after injection molding and water cooling is placed in a fixing hole of the clamping plate, the electric melting pipe fitting is clamped through a fastening rotating handle, and the mold core is pulled out through a draw hook connected with an air cylinder, so that demolding is completed; the whole process flow is smooth and rapid, the production cost is reduced, the production efficiency is improved, and the product quality is ensured; however, in the production process, particularly in the injection molding link, the injection molding efficiency is low, and the overall production efficiency is affected.
Disclosure of Invention
In order to solve the above problems, the present invention aims to provide a process for preparing a PE electrofusion pipe and a PE electrofusion pipe thereof.
In order to achieve the above purpose, the present invention provides the following technical solutions: a preparation process of PE electric melting pipe fitting comprises the following steps:
Step one: paying-off guide; winding the metal wire wrapped with the PE material on a paying-off drum of a paying-off device; before starting, the metal wire passes through a guide wheel of the guide device and is guided to the winding device;
Step two: winding; placing the mould core on a turntable of a winding device, and rotating a manual rotating handle to enable a sliding block to clamp the mould core; winding one end of a metal wire around an electrode and inserting the metal wire into an electrode hole at one end of a mold core, starting a driving motor to start a turntable, and closing the driving motor after the winding of the metal wire is completed;
Step three: melting the surface; cutting off the metal wire, stripping the end, penetrating through the electrode, winding and inserting the electrode on the electrode hole at the other end of the mold core, and heating the surface of the metal wire by using a heating gun to melt the surface of the metal wire;
Step four: injection molding; placing a mold core with a metal wire arranged outside into a mold of an injection molding machine, starting a hydraulic rod to enable a cover plate to move towards the mold, sealing a molding groove, starting the injection molding machine to enable molten fluid in an injection molding pipe to enter the molding groove through an injection molding hole for injection molding, enabling the cover plate to move outwards after molding, then starting a water pump in a cooling box, enabling cooling fluid in the cooling box to enter a telescopic pipe through the cooling pipe by the water pump under a certain pressure, enabling a top disc to move outwards by utilizing the pressure of the water pressure, so that an injection molded model and the molding groove are automatically separated, after the top disc moves outwards, automatically ejecting a cooling block on the side wall of the top disc due to the elasticity of a spring, spraying and cooling the upper and lower spray holes of the molding groove at the same time, and realizing rapid cooling of the molding groove;
step five: water cooling and demoulding; after injection molding is finished, placing the injection molding into a water cooling box for water cooling; after water cooling is finished, the die core is placed in a fixing hole of a clamping plate of the demolding device, the fastening rotating handle is rotated to enable the clamping plate to clamp the electric melting pipe fitting, the draw hook is buckled with a core pulling hole of the die core, and the air cylinder is started to draw out the die core, so that demolding is completed.
Preferably, the injection molding machine includes base, the feeder hopper, the fusion pipe, injection mold 4, apron and hydraulic stem, hydraulic stem sets up between apron and injection mold 4, be used for driving apron and injection mold 4's contact and separation, be equipped with the shaping groove in the injection mold, be equipped with the hole of moulding plastics that is linked together with the fusion pipe on the shaping groove, and be equipped with a plurality of adjustment grooves on the shaping inslot wall, all be equipped with fixed connection and telescopic flexible pipe of length in the adjustment groove, flexible pipe upper end is equipped with the footwall of rotating connection, adjustment groove notch department is equipped with the holding vessel that just is used for footwall shrink storage with footwall assorted, be equipped with a plurality of evenly distributed's spray grooves on the footwall, but all be equipped with sliding connection and round trip movement's cooling block in the spray groove, the cooling block upper end is equipped with a plurality of evenly distributed's last orifice, be located the adjustment groove bottom of footwall bottom all is equipped with a plurality of evenly distributed's orifice, be located and be equipped with the intercommunication groove that is linked together on the cooling block that sprays the inslot.
Further, still include cooling tank and dry air heater, store the coolant liquid in the cooling tank, and be equipped with the water pump that is used for driving the coolant liquid and carry in the cooling tank, the water pump output is equipped with the cooling tube, and the adjustment tank middle part is equipped with the intercommunicating pore that is linked together with flexible pipe, cooling tube and intercommunicating pore intercommunication, and dry air heater output is equipped with one-way drying tube, one-way drying tube and cooling tube middle part intercommunication.
Further, the flexible pipe includes first pipe and second pipe, and first pipe sliding connection is intraductal at the second, and second pipe and adjustment tank fixed connection, first pipe upper end and top disc rotate the intercommunication, and second pipe bottom is equipped with fixed connection and is used for driving the elastic band of first pipe recovery initial position, elastic band extension end and first pipe bottom fixed connection.
Furthermore, the center of the top disk is provided with a diversion hole, the first pipe is rotationally connected with the inside of the diversion hole, the outer side wall of the first pipe is provided with a fixedly connected limiting ring plate, and the inner wall of the diversion hole is provided with a limiting ring groove for sliding connection of the limiting ring plate.
Further, the upper spray hole and the lower spray hole are inclined, and the inclination directions of the upper spray hole and the lower spray hole are opposite.
Further, a plurality of magnets used for automatically absorbing and recycling the top disc are arranged on the inner wall of the storage tank, and the outer surface of the recycled top disc is flush with the inner wall of the regulating tank.
Further, the cooling block outside is the spring bolt form, and both ends are equipped with the spacing groove of symmetric distribution about the adjustment tank, and the spacing groove all is equipped with the limiting plate, limiting plate and cooling block fixed connection, is equipped with the reset spring that is used for driving the cooling block automatic pop-up in the spacing groove.
Further, the top disc is cylindrical, the number of the cooling blocks is five, and the cooling blocks are distributed on the outer side of the top disc in a central symmetry mode.
A PE electric melting pipe fitting is prepared by the preparation process of the PE electric melting pipe fitting.
Compared with the prior art, the invention has the following beneficial effects:
1. The extension of flexible pipe is driven to replace original hydraulic pressure ejection of compact ejector pin by the water pressure that the water pump produced, such design can be with the water pressure carry out abundant utilization, can replace original hydraulic pressure ejection of compact ejector pin, the cost is reduced, set up roof plate and cooling block in the flexible pipe outside simultaneously, make flexible pipe after the extension, the cooling block outwards moves, the coolant liquid can be with certain pressure, from last orifice and lower orifice blowout, in ejection of compact like this, can carry out quick cooling to the shaping inslot wall, the time that next mould shaping needs has been reduced, go up the orifice and also can carry out the cooling of certain degree to the mould after the shaping, such design, can effectually improve injection moulding's efficiency, improve holistic output, moreover can make full use of the energy, the cost is reduced.
2. The design of bin can effectually store the roof-plate, guaranteed the wholeness of shaping groove, the collapsible design of cooling block, when not using, shrink to spray the inslot through the cooling block, can make things convenient for the roof-plate to retrieve to the bin, make simultaneously that go up the orifice and also retrieve simultaneously, make whole become a sealed whole, when the water pump starts like this, can make full use of with water pressure, can be better outwards ejecting the roof-plate, when using, the outward motion of cooling block can take out last orifice hold-in range, the spraying of spraying orifice is convenient like this, be favorable to last orifice to cool off shaping mould.
3. The design of first pipe and second pipe can realize the holistic flexible of flexible pipe, and the design of elastic band makes the water pump stop the back, and the elasticity of elastic band can drive first pipe automatic recovery to in the second pipe, has realized the automatic shrink of flexible pipe, the shaping of the back mould of being convenient for has improved holistic production efficiency of moulding plastics.
4. The upper spray hole and the lower spray hole are inclined, and meanwhile, the upper spray hole and the lower spray hole are opposite in inclination direction, and the cooling liquid is utilized to generate a water pressure reaction force when passing through the upper spray hole and the lower spray hole so as to drive the top disc to rotate, so that the automatic rotation of the top disc is realized.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic diagram of the whole structure of the injection molding machine of the present invention;
FIG. 3 is a schematic view of an injection mold according to the present invention;
FIG. 4 is a schematic view of a three-dimensional connection structure of a top plate and a telescopic tube according to the present invention;
FIG. 5 is a schematic cross-sectional view of an injection mold according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 5A according to the present invention;
FIG. 7 is a schematic view of the connection structure of the first pipe and the top plate of the present invention;
FIG. 8 is a schematic diagram of a cross-sectional connection structure of a spray tank and a cooling block according to the present invention.
In the figure: 1. a base; 2. a fusion pipe; 3. a feed hopper; 4. an injection mold; 41. a forming groove; 42. a telescopic tube; 421. a first tube; 422. a second tube; 423. an elastic band; 424. a limiting ring plate; 43. a cooling block; 431. an upper spray hole; 432. a communication groove; 44. injection molding holes; 45. a top plate; 451. a spray tank; 452. a lower nozzle; 453. a limit ring groove; 454. a return spring; 455. a limiting plate; 456. a limit groove; 46. a dry air heater; 461. a unidirectional drying tube; 47. a cooling box; 471. a cooling tube; 48. an adjustment tank; 481. a magnet; 482. a storage tank; 5. a hydraulic rod; 6. and a cover plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a process for preparing a PE electrofusion pipe includes the following steps: step one: paying-off guide; winding the metal wire wrapped with the PE material on a paying-off drum of a paying-off device; before starting, the metal wire passes through a guide wheel of the guide device and is guided to the winding device; step two: winding; placing the mould core on a turntable of a winding device, and rotating a manual rotating handle to enable a sliding block to clamp the mould core; winding one end of a metal wire around an electrode and inserting the metal wire into an electrode hole at one end of a mold core, starting a driving motor to start a turntable, and closing the driving motor after the winding of the metal wire is completed; step three: melting the surface; cutting off the metal wire, stripping the end, penetrating through the electrode, winding and inserting the electrode on the electrode hole at the other end of the mold core, and heating the surface of the metal wire by using a heating gun to melt the surface of the metal wire; step four: injection molding; placing a mold core with a metal wire arranged outside into a mold of an injection molding machine, starting a hydraulic rod 5 to enable a cover plate 6 to move towards the mold, sealing a molding groove 41, starting the injection molding machine to enable molten fluid in an injection molding pipe to enter the molding groove 41 through an injection molding hole 44 for injection molding, enabling the cover plate 6 to move outwards after molding, starting a water pump in a cooling box 47, enabling cooling liquid in the cooling box 47 to enter a telescopic pipe 42 through a cooling pipe 471 at a certain pressure, enabling a top disc 45 to move outwards by utilizing the pressure of the water pressure, enabling an injection molded model to be automatically separated from the molding groove 41, enabling a cooling block 43 on the side wall of the top disc 45 to be automatically ejected out due to elasticity of a spring after the top disc 45 moves outwards, enabling the cooling liquid to be sprayed out along with an upper spray hole 431 and a lower spray hole 452, and enabling the upper side and lower side of the molding groove 41 to be sprayed and cooled at the same time, and realizing rapid cooling of the molding groove 41; step five: water cooling and demoulding; after injection molding is finished, placing the injection molding into a water cooling box for water cooling; after water cooling is finished, the die core is placed in a fixing hole of a clamping plate of the demolding device, the fastening rotating handle is rotated to enable the clamping plate to clamp the electric melting pipe fitting, the draw hook is buckled with a core pulling hole of the die core, and the air cylinder is started to draw out the die core, so that demolding is completed. The extension of flexible pipe 42 is driven by the water pressure generated by the water pump, thereby replace original hydraulic pressure ejection of compact ejector pin, such design can carry out abundant utilization with water pressure, can replace original hydraulic pressure ejection of compact ejector pin, the cost is reduced, set up top disk 45 and cooling block 43 with flexible pipe 42 outside simultaneously, make flexible pipe 42 after the extension, cooling block 43 outwards moves, the coolant can be with certain pressure, from last orifice 431 and lower orifice 452 blowout, in ejection of compact like this, can carry out quick cooling to shaping groove 41 inner wall, the time that the shaping of next mould needs has been reduced, go up orifice 431 also can carry out the cooling of certain degree to the mould after the shaping, such design, can effectually improve injection moulding's efficiency, improve holistic output, moreover can make full use of the energy, the cost is reduced.
Referring to fig. 2-3, the injection molding machine includes a base 1, a feed hopper 3, a melting pipe 2, an injection molding mold 4, a cover plate 6 and a hydraulic rod 5, wherein the hydraulic rod 5 is arranged between the cover plate 6 and the injection molding mold 4 and is used for driving the cover plate 6 to contact with and separate from the injection molding mold 4, a molding groove 41 is arranged in the injection molding mold 4, an injection molding hole 44 communicated with the melting pipe 2 is arranged on the molding groove 41, a plurality of adjusting grooves 48 are arranged on the inner wall of the molding groove 41, telescopic pipes 42 which are fixedly connected and have a telescopic length are arranged in the adjusting grooves 48, a top disk 45 which is rotatably connected is arranged at the upper end of the telescopic pipes 42, a storage groove 482 which is matched with the top disk 45 and is used for shrinking and storing the top disk 45 is arranged at the notch of the adjusting grooves 48, a plurality of uniformly distributed spraying grooves 451 are arranged on the outer side wall of the top disk 45, a plurality of cooling blocks 43 which are slidably connected and can move back and forth are arranged in the spraying grooves 451, a plurality of uniformly distributed upper spraying holes 431 are arranged at the upper ends of the cooling blocks 43, a plurality of uniformly distributed lower spraying holes 452 are arranged at the bottom of the adjusting grooves 48 which are positioned at the bottom of the top disk 45 and are uniformly distributed, and are arranged in the spraying grooves 43, and are communicated with the spraying grooves 432. The design of holding vessel 482 can effectually store the footwall 45, the wholeness of shaping groove 41 has been guaranteed, the collapsible design of cooling block 43, when not using, shrink to spray in the groove 451 through cooling block 43, can make things convenient for footwall 45 to retrieve to holding vessel 482, make simultaneously and also retrieve simultaneously to go up orifice 431, make whole become a sealed whole, like this, when the water pump starts, can make full use of with water pressure, can be better outwards ejecting footwall 45, when using, the outward motion of cooling block 43 can take out last orifice 431 hold-in time, the spraying of orifice 431 is gone up in such convenience, be favorable to going up orifice 431 to cooling to injection mold 4 utensil.
Referring to fig. 5, the cooling device further includes a cooling tank 47 and a dry air heater 46, wherein the cooling tank 47 stores cooling liquid, a water pump for driving the cooling liquid to be conveyed is arranged in the cooling tank 47, a cooling pipe 471 is arranged at an output end of the water pump, a communication hole communicated with the telescopic pipe 42 is arranged in the middle of the adjusting groove 48, the cooling pipe 471 is communicated with the communication hole, a unidirectional drying pipe 461 is arranged at an output end of the dry air heater 46, and the unidirectional drying pipe 461 is communicated with the middle of the cooling pipe 471. The design of cooling box 47 and water pump can utilize the timely transport the coolant liquid of water pump, and the design of dry air heater 46, after the cooling of shaping groove 41 inner wall is accomplished, can be through stopping the water pump, then start the form of dry air heater 46, utilize the dry hot air flow that dry air heater 46 produced, along with the one-way drying pipe 461 gets into in the flexible pipe 42, spout through last orifice 431 and lower orifice 452, can carry out the rapid draing to shaping groove 41 inner wall.
Referring to fig. 6, the telescopic tube 42 includes a first tube 421 and a second tube 422, the first tube 421 is slidably connected in the second tube 422, the second tube 422 is fixedly connected with the adjusting slot 48, the upper end of the first tube 421 is rotatably connected with the top plate 45, an elastic band 423 fixedly connected with the bottom of the second tube 422 and used for driving the first tube 421 to recover to an initial position is provided, and an extending end of the elastic band 423 is fixedly connected with the bottom of the first tube 421. The design of first pipe 421 and second pipe 422 can realize the holistic flexible of flexible pipe 42, and the design of elastic band 423 makes the water pump stop the back, and the elasticity of elastic band 423 can drive first pipe 421 and retrieve to in the second pipe 422 voluntarily, has realized flexible pipe 42's automatic shrink, the shaping of the back mould of being convenient for has improved holistic production efficiency of moulding plastics.
Referring to fig. 7, a diversion hole is provided at the center of the top disk 45, the first tube 421 is rotatably connected with the inside of the diversion hole, a fixed connection limiting ring plate 424 is provided on the outer side wall of the first tube 421, and a limiting ring groove 453 for sliding connection of the limiting ring plate 424 is provided on the inner wall of the diversion hole. The design of the limiting ring plate 424 and the limiting ring groove 453 not only realizes the rotary connection of the telescopic pipe 42 and the top disk 45, but also can prevent the separation of the top disk 45 and the telescopic pipe 42, and improves the overall stability.
Referring to fig. 4, the upper spray hole 431 and the lower spray hole 452 are inclined, and the inclined directions of the upper spray hole 431 and the lower spray hole 452 are opposite. The upper spray hole 431 and the lower spray hole 452 are inclined, and meanwhile, the inclined directions of the upper spray hole 431 and the lower spray hole 452 are opposite, and the counter force of water pressure generated when cooling liquid passes through the upper spray hole 431 and the lower spray hole 452 is utilized to drive the top disc 45 to rotate, so that the automatic rotation of the top disc 45 is realized, after the injection mold 4 is ejected, the top disc 45 can perform rotary spraying and rotary air drying on the inside of the forming groove 41, the cooling efficiency and the drying efficiency of the inner wall of the forming groove 41 are further improved, and the inclined directions of the upper spray hole 431 and the lower spray hole 452 are set to be opposite, so that the directions of the two directions are consistent, and the rotation of the top disc 45 can be further ensured.
Referring to fig. 6, a plurality of magnets 481 for automatically absorbing and recovering the top plate 45 are disposed on the inner wall of the storage tank 482, and the outer surface of the recovered top plate 45 is flush with the inner wall of the adjustment tank 48. The design of magnet 481 utilizes the adsorption affinity of magnet 481, makes roof plate 45 when retrieving in holding vessel 482, prevents elastic band 423, the weakening of elasticity, can not drive the condition that roof plate 45 was retrieved to holding vessel 482 completely in, and the magnetic force of magnet 481 can effectually guarantee that roof plate 45 can effectually retrieve in the storage when retrieving, has guaranteed holistic stability.
Referring to fig. 8, the outer side of the cooling block 43 is in a lock tongue shape, the upper and lower ends of the adjusting groove 48 are provided with symmetrically distributed limiting grooves 456, the limiting grooves 456 are provided with limiting plates 455, the limiting plates 455 are fixedly connected with the cooling block 43, and a reset spring 454 for driving the cooling block 43 to automatically pop up is arranged in the limiting grooves 456.
Further, the top plate 45 is cylindrical, the number of the cooling blocks 43 is five, and the cooling blocks 43 are distributed outside the top plate 45 in a central symmetry manner.
A PE electric melting pipe fitting is prepared by the preparation process of the PE electric melting pipe fitting.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The preparation process of the PE electric melting pipe fitting is characterized by comprising the following steps of:
Step one: paying-off guide; winding the metal wire wrapped with the PE material on a paying-off drum of a paying-off device; before starting, the metal wire passes through a guide wheel of the guide device and is guided to the winding device;
Step two: winding; placing the mould core on a turntable of a winding device, and rotating a manual rotating handle to enable a sliding block to clamp the mould core; winding one end of a metal wire around an electrode and inserting the metal wire into an electrode hole at one end of a mold core, starting a driving motor to start a turntable, and closing the driving motor after the winding of the metal wire is completed;
Step three: melting the surface; cutting off the metal wire, stripping the end, penetrating through the electrode, winding and inserting the electrode on the electrode hole at the other end of the mold core, and heating the surface of the metal wire by using a heating gun to melt the surface of the metal wire;
Step four: injection molding; placing a mold core with a metal wire outside into a mold of an injection molding machine, starting a hydraulic rod (5), enabling a cover plate (6) to move towards the mold, sealing a molding groove (41), starting the injection molding machine, enabling molten fluid in an injection molding pipe to enter the molding groove (41) through an injection molding hole (44), performing injection molding, enabling the cover plate (6) to move outwards after molding, then starting a water pump in a cooling box (47), enabling cooling liquid in the cooling box (47) to enter a telescopic pipe (42) through a cooling pipe (471) at a certain pressure, enabling a top disc (45) to move outwards by utilizing the pressure of the water pressure, so that an injection molded model is automatically separated from the molding groove (41), and after the top disc (45) moves outwards, automatically ejecting cooling blocks (43) on the side wall of the top disc (45) due to the elasticity of a spring, enabling the cooling liquid to spray along with an upper spray hole (431) and a lower spray hole (452), and cooling the upper and lower spray of the molding groove (41) at the same time, so that rapid cooling of the molding groove (41) is realized;
Step five: water cooling and demoulding; after injection molding is finished, placing the injection molding into a water cooling box for water cooling; after water cooling is finished, placing the die core into a fixed hole of a clamping plate of a demoulding device, rotating a fastening rotating handle to enable the clamping plate to clamp the electric melting pipe fitting, fastening a draw hook to a core pulling hole of the die core, starting an air cylinder to draw out the die core, and finishing demoulding;
The injection molding machine comprises a base (1), a feed hopper (3), a melting pipe (2), an injection mold (4), a cover plate (6) and a hydraulic rod (5), wherein the hydraulic rod (5) is arranged between the cover plate (6) and the injection mold (4) and used for driving the cover plate (6) to be contacted with and separated from the injection mold (4), a forming groove (41) is formed in the injection mold (4), injection molding holes (44) communicated with the melting pipe (2) are formed in the forming groove (41), a plurality of adjusting grooves (48) are formed in the inner wall of the forming groove (41), telescopic pipes (42) which are fixedly connected and have telescopic lengths are arranged in the adjusting grooves (48), a top disc (45) which is connected in a rotating mode is arranged at the upper end of the telescopic pipes (42), a storage groove (482) which is matched with the top disc (45) and used for shrinking and storing the top disc (45) is arranged at the notch of the adjusting grooves, a plurality of spray grooves (451) which are uniformly distributed are formed in the outer side wall of the top disc (45), cooling blocks (43) which are connected in a sliding mode and can move back and forth are arranged, a plurality of spray holes (48) are formed in the cooling blocks (43), the upper ends of the cooling blocks (43) are uniformly distributed on the side walls, the upper ends of the cooling blocks are provided with a plurality of evenly distributed on the top disc (451) and are uniformly distributed on the top disc (45) and are arranged on the bottom surfaces, a communication groove (432) used for communicating the spraying groove (451) with upper spraying is arranged on the cooling block (43) positioned in the spraying groove (451);
the upper spray hole (431) and the lower spray hole (452) are inclined, and the inclination directions of the upper spray hole (431) and the lower spray hole (452) are opposite.
2. The process for preparing the PE electric melting pipe fitting according to claim 1, wherein the process comprises the following steps: still include cooling tank (47) and dry air heater (46), store the coolant liquid in cooling tank (47), and be equipped with the water pump that is used for driving the coolant liquid and carry in cooling tank (47), the water pump output is equipped with cooling tube (471), adjustment tank (48) middle part is equipped with the intercommunicating pore that is linked together with flexible pipe (42), cooling tube (471) and intercommunicating pore intercommunication, dry air heater (46) output is equipped with one-way drying tube (461), one-way drying tube (461) and cooling tube (471) middle part intercommunication.
3. The process for preparing the PE electric melting pipe fitting according to claim 1, wherein the process comprises the following steps: the telescopic pipe (42) comprises a first pipe (421) and a second pipe (422), the first pipe (421) is slidably connected in the second pipe (422), the second pipe (422) is fixedly connected with the adjusting groove (48), the upper end of the first pipe (421) is rotationally communicated with the top disc (45), the bottom of the second pipe (422) is fixedly connected with an elastic band (423) used for driving the first pipe (421) to restore to the initial position, and the extending end of the elastic band (423) is fixedly connected with the bottom of the first pipe (421).
4. A process for preparing a PE electrofusion pipe according to claim 3, characterized in that: the center of the top disc (45) is provided with a diversion hole, the first pipe (421) is rotationally connected with the inside of the diversion hole, the outer side wall of the first pipe (421) is provided with a limiting ring plate (424) which is fixedly connected with the first pipe, and the inner wall of the diversion hole is provided with a limiting ring groove (453) which is used for sliding connection of the limiting ring plate (424).
5. The process for preparing the PE electric melting pipe fitting according to claim 1, wherein the process comprises the following steps: the inner wall of the storage tank (482) is provided with a plurality of magnets (481) for automatically absorbing and recovering the top disc (45), and the outer surface of the recovered top disc (45) is flush with the inner wall of the regulating tank (48).
6. The process for preparing the PE electric melting pipe fitting according to claim 1, wherein the process comprises the following steps: the cooling block (43) outside is the spring bolt form, and both ends are equipped with spacing groove (456) of symmetric distribution about adjustment tank (48), and spacing groove (456) all are equipped with limiting plate (455), limiting plate (455) and cooling block (43) fixed connection are equipped with in spacing groove (456) and are used for driving reset spring (454) that cooling block (43) automatic pop-up.
7. The process for preparing the PE electric melting pipe fitting according to claim 1, wherein the process comprises the following steps: the top disc (45) is cylindrical, the number of the cooling blocks (43) is five, and the cooling blocks (43) are distributed outside the top disc (45) in a central symmetry mode.
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| CN110815708A (en) * | 2019-11-18 | 2020-02-21 | 江苏海威塑业科技有限公司 | Production system and process method of electric melting pipe fittings |
| CN211709887U (en) * | 2019-08-12 | 2020-10-20 | 吴嘉璐 | Circulating water cold water pressing ejection type injection mold |
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| CN202213136U (en) * | 2011-08-18 | 2012-05-09 | 台州伊瑞模具有限公司 | Forming structure for electrofusion pipe fittings |
| CN205702296U (en) * | 2016-04-29 | 2016-11-23 | 湖州美普兰精密锻造有限责任公司 | A kind of high velocity forging machine is with rear die cooling body |
| CN214294204U (en) * | 2020-12-21 | 2021-09-28 | 江西金酷智能制造有限公司 | Injection mold for processing plastic gasket convenient for workpiece to take out |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211709887U (en) * | 2019-08-12 | 2020-10-20 | 吴嘉璐 | Circulating water cold water pressing ejection type injection mold |
| CN110815708A (en) * | 2019-11-18 | 2020-02-21 | 江苏海威塑业科技有限公司 | Production system and process method of electric melting pipe fittings |
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