CN112810086A - Injection molding mechanism of injection mold - Google Patents
Injection molding mechanism of injection mold Download PDFInfo
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- CN112810086A CN112810086A CN202011536907.1A CN202011536907A CN112810086A CN 112810086 A CN112810086 A CN 112810086A CN 202011536907 A CN202011536907 A CN 202011536907A CN 112810086 A CN112810086 A CN 112810086A
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- barrel
- injection
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- wall
- piston
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- 238000002347 injection Methods 0.000 title claims abstract description 62
- 239000007924 injection Substances 0.000 title claims abstract description 62
- 238000001746 injection moulding Methods 0.000 title claims abstract description 34
- 239000004033 plastic Substances 0.000 claims abstract description 63
- 229920003023 plastic Polymers 0.000 claims abstract description 63
- 239000000463 material Substances 0.000 claims abstract description 35
- 238000000227 grinding Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims description 34
- 238000003756 stirring Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 230000000149 penetrating Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 18
- 239000007787 solid Substances 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 7
- 238000000465 moulding Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000719190 Chloroscombrus Species 0.000 description 1
- 229920000426 Microplastic Polymers 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Images
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
- B29C45/54—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/022—Melting the material to be shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- 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
-
- 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
Abstract
The invention discloses an injection molding mechanism of an injection mold, which comprises a plastic injection barrel, a screw rod and a driving mechanism, wherein a through hole is formed in the plastic injection barrel, the screw rod is positioned in the through hole, a first straight barrel and a second straight barrel are sequentially arranged in the screw rod from bottom to top, and the first straight barrel is communicated with the second straight barrel. According to the invention, the piston can be driven to rotate by the rotation of the screw rod, so that the first annular tooth at the bottom of the piston rotates, after the first annular tooth rotates, the first annular tooth can drive the piston to move up and down when being in contact with the second annular tooth, the piston drives the lifting rod to move up and down, the bulge on the outer side of the lifting rod can contact one end of the moving rod when moving upwards, the moving rod further drives the grinding block to move outwards and extend out of the groove, the grinding block moves outwards to roll materials in the spiral channel, and solid plastic particles can be better melted.
Description
Technical Field
The invention relates to the field of injection nozzles of injection molding machines, in particular to an injection molding mechanism of an injection mold.
Background
The injection molding machine is a main molding device for manufacturing thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, can be divided into a vertical type, a horizontal type and a vertical and horizontal type according to the arrangement mode of an injection device and a die locking device, has the capability of molding the plastic products with complex shapes, accurate sizes or compact textures with metal inserts at one time, and is widely applied to various fields of national defense, electromechanics, automobiles, transportation, building materials, packaging, agriculture, cultural and educational sanitation and daily life of people.
Particularly in the field of automobiles, about 20% -30% of parts on automobiles are made of plastic or rubber materials, the proportion of new energy automobiles is still on the trend of increasing, about 80% of plastic parts are finished by an injection molding process, particularly, parts such as bumpers, door panels, instrument panels, upright post guard plates, grids, threshold trim strips, side walls and the like of low-grade vehicles can be produced by the injection molding process, parts at different parts need to be produced by raw materials with different performances due to different functions, instrument panels and door panels of high-grade vehicles are coated by a coating process to increase hand feeling, although the injection molding process is correspondingly reduced, the internal frameworks still adopt the injection molding process, therefore, the injection molding machine has an important position in quantity or variety, and becomes one of the machines which grow fastest and produce the largest quantity in the plastic machinery at present.
When the injection molding mechanism of the existing injection molding machine is used, solidified materials can be remained in injection molding liquid in a molten state and are not stirred due to the limited stirring degree of the stirring blades in the injection molding mechanism, the quality of a plastic finished product is influenced, meanwhile, large bubbles can be generated in the stirring process of the molten injection molding liquid due to the limited stirring effect of the stirring blades, and after the plastic is molded, the bubbles are generated in the interior and the surface of the plastic product, so that the peeling condition easily occurs in the use process of the inferior plastic product, and the use quality of the plastic finished product is influenced.
Disclosure of Invention
The present invention is directed to an injection mechanism of an injection mold to solve the problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: an injection molding mechanism of an injection mold comprises a plastic injection barrel, a screw rod and a driving mechanism, wherein a through hole is arranged inside the plastic injection barrel, the screw rod is positioned in the through hole, a first straight cylinder and a second straight cylinder are sequentially arranged in the screw rod from bottom to top, the first straight cylinder is communicated with the second straight cylinder, the mixing mechanism is arranged in the second straight cylinder, the piston is arranged in the first straight cylinder, the piston comprises a second straight surface and a second conical surface, the outer wall of the second straight surface on the outer side of the piston is connected with a material conveying plate in a welding way, and one side of the material conveying plate is provided with an inclined plane, the outer wall of the second conical surface at the outer side of the piston is welded and connected with a first annular tooth, the inner side of the through hole, which is positioned on the inner wall of the first conical surface, is welded and connected with second annular teeth, and the second annular teeth are meshed with the first annular teeth;
the through hole comprises a first straight surface and a first conical surface, feed inlets penetrating into the through hole are formed in two sides of the plastic injection barrel, a blanking channel is communicated with the bottom of the through hole in the plastic injection barrel, heating pipes are mounted at the bottom end of the plastic injection barrel, the number of the heating pipes is at least six, and the six groups of heating pipes are respectively located on two sides of the blanking channel;
mixing mechanism is including being located the straight inside lifter of a section of thick bamboo of second, and the bottom of lifter and the top welded connection of piston, the outside of lifter is provided with the arch, mixing mechanism is still including being located the inside recess of screw rod, and one side welded connection of recess inner wall has the second spring, the one end welded connection of second spring has the carriage release lever that runs through to the straight inside of a section of thick bamboo of second, and one side welded connection of carriage release lever has the piece of milling that is located the recess inside.
Preferably, actuating mechanism is including being located the driving motor who annotates the plastic barrel top, driving motor's output welded connection has the pivot that runs through to the through-hole inside, the bottom of pivot is passed through the bolt with the top of screw rod and can be dismantled the connection.
Preferably, a clamping groove is formed in the outer wall of the second straight-shaped surface and located above the material conveying plate, and a clamping block connected with the clamping groove in a sliding mode is welded to the inner wall of the first straight cylinder.
Preferably, the outer side of the plastic injection barrel is provided with a heating mechanism, the heating mechanism comprises heating plates and a control switch for controlling the heating plates, the heating plates are at least ten groups, and the ten groups of heating plates are uniformly distributed on the outer wall of the plastic injection barrel.
Preferably, the bottom end of the inner wall of the first straight cylinder is connected with a first spring in a welding mode, and the top end of the first spring is connected with the outer wall of the lifting rod in a welding mode.
Preferably, the spiral stirring blade and the inside of the through hole form a spiral channel, the grinding block is positioned in the spiral channel and is spirally parallel to the spiral stirring blade, and the outer wall of the grinding block is of an arc-shaped structure.
Preferably, the number of the protrusions is the same as that of the moving rods, and the protrusions are uniformly distributed on the outer side of the lifting rod in a spiral shape.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention can be clamped in the screw rod through the arranged piston, and the piston can be driven to rotate when the screw rod rotates, so that the first annular teeth at the bottom of the piston rotate, and the first annular teeth and the second annular teeth are meshed with each other in the initial state, when the first annular tooth rotates, the first annular tooth and the second annular tooth are contacted with each other, the piston drives the lifting rod to move up and down, the bulge on the outer side of the lifting rod can be contacted with one end of the movable rod when moving upwards, so that the moving rod drives the grinding block to move outwards and extend out of the groove, the grinding block can roll the materials in the spiral channel by moving outwards, because the rotation speed of the screw is high, the outward extending frequency of the grinding block is high, so that the grinding block can continuously grind materials, and solid plastic particles can be better melted;
(2) according to the invention, when the grinding block extends out of the groove, a smaller gap can be formed between the grinding block and the inner wall of the first straight surface in the through hole, so that a filtering channel is formed, only molten injection molding liquid can pass through the filtering channel, most plastic particles can be blocked, the plastic particles which are not molten can have enough time to be heated and molten, and the existence of larger plastic particles is avoided;
(3) according to the invention, one side of the material conveying plates is an inclined plane, so that the longitudinal section of each material conveying plate is in a right trapezoid shape, a material conveying channel which is gradually reduced from top to bottom is formed between every two groups of material conveying plates, when molten injection molding liquid passes through the material conveying channels, proper extrusion can be formed as the aperture of the material conveying channels is gradually reduced, and the extrusion effect is more obvious under the action of centrifugal force as the material conveying plates rotate, so that the existence of solid particles is reduced;
(4) the invention can carry out final grinding on possibly remained solid particles by the mutual matching of the first annular tooth and the second annular tooth when the first annular tooth and the second annular tooth are meshed, so that the quality of the discharged molten injection molding liquid is better, bubbles can be eliminated when the first annular tooth and the second annular tooth are meshed, the generation of the bubbles is avoided, when the first annular tooth rotates, the wave crest on the first annular tooth corresponds to the wave crest on the second annular tooth, a channel is formed between the first annular tooth and the second annular tooth, so that the molten injection molding liquid can flow into the discharging channel from the hole in the middle of the second annular tooth, the molten injection molding liquid can collide with each other after passing through the hole, the melting effect is better, the solid particles do not exist in the plastic product, and simultaneously the appearance and the quality of the plastic product can not be influenced by the generation of larger bubbles in the plastic product are ensured, when the screw does not rotate, the first annular tooth and the second annular tooth are meshed with each other, so that the interior of the plastic injection barrel is sealed, and the next use is facilitated;
(5) the heating pipe can reheat the output molten injection molding liquid, so that the real-time temperature of the injection molding liquid can be ensured, and the production quality of plastic products can be ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial schematic view of the present invention;
FIG. 3 is a partial structural view of the plastic injection barrel of the present invention;
FIG. 4 is a schematic top view of the plastic injection barrel of the present invention;
FIG. 5 is an enlarged view of the present invention A;
FIG. 6 is a schematic view of a second ring tooth of the present invention;
fig. 7 is a partial structural schematic view of the piston of the present invention.
In the figure: 1. injecting a plastic barrel; 101. a through hole; 102. a first straight surface; 103. a first tapered surface; 104. a feed inlet; 2. a drive mechanism; 201. a drive motor; 202. a rotating shaft; 3. a screw; 4. a spiral stirring blade; 5. a first straight cylinder; 6. a second straight cylinder; 7. a mixing mechanism; 701. a lifting rod; 702. a protrusion; 703. a first spring; 704. a groove; 705. a travel bar; 706. a second spring; 707. grinding the blocks; 8. a piston; 801. a second straight surface; 802. a second tapered surface; 9. a material conveying plate; 901. a bevel; 10. a first annular tooth; 11. a second ring-shaped tooth; 12. a blanking channel; 13. heating a tube; 14. a clamping block; 15. a card slot; 16. a heating mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, an embodiment of the present invention is shown: an injection molding mechanism of an injection mold comprises an injection molding barrel 1, a screw rod 3 and a driving mechanism 2, wherein a through hole 101 is formed in the injection molding barrel 1, the screw rod 3 is positioned in the through hole 101, a first straight barrel 5 and a second straight barrel 6 are sequentially arranged in the screw rod 3 from top to bottom, the first straight barrel 5 is communicated with the second straight barrel 6, a mixing mechanism 7 is arranged in the second straight barrel 6, a piston 8 is arranged in the first straight barrel 5, the piston 8 comprises a second straight surface 801 and a second taper surface 802, a material conveying plate 9 is welded and connected on the outer wall of the second straight surface 801 outside the piston 8, an inclined surface 901 is arranged on one side of the material conveying plate 9, a first annular tooth 10 is welded and connected to the outer wall of the second conical surface 802 on the outer side of the piston 8, a second annular tooth 11 is welded and connected to the inner wall of the first conical surface 103 on the inner side of the through hole 101, and the second annular tooth 11 is meshed with the first annular tooth 10;
the through hole 101 comprises a first straight surface 102 and a first conical surface 103, feed inlets 104 penetrating into the through hole 101 are formed in two sides of the plastic injection barrel 1, a blanking channel 12 is communicated with the bottom of the through hole 101 in the plastic injection barrel 1, heating pipes 13 are mounted at the bottom end of the interior of the plastic injection barrel 1, the number of the heating pipes 13 is at least six, and the six groups of heating pipes 13 are respectively located on two sides of the blanking channel 12;
mixing mechanism 7 is including being located the inside lifter 701 of the straight section of thick bamboo 6 of second, and the bottom of lifter 701 and the top welded connection of piston 8, the outside of lifter 701 is provided with protruding 702, mixing mechanism 7 is still including being located the inside recess 704 of screw rod 3, and one side welded connection of recess 704 inner wall has second spring 706, the one end welded connection of second spring 706 has the carriage release lever 705 that runs through to the inside of the straight section of thick bamboo 6 of second, and one side welded connection of carriage release lever 705 has the piece of milling 707 that is located the inside of recess 704.
According to the invention, the piston 8 can be clamped in the screw rod 3, when the screw rod 3 rotates, the piston 8 can be driven to rotate, so that the first annular tooth 10 at the bottom of the piston 8 rotates, the first annular tooth 10 and the second annular tooth 11 are meshed with each other in an initial state, after the first annular tooth 10 rotates, the first annular tooth 10 can drive the piston 8 to move up and down when being in contact with the second annular tooth 11, the piston 8 drives the lifting rod 701 to move up and down, the bulge 702 on the outer side of the lifting rod 701 can be in contact with one end of the moving rod 705 when moving upwards, so that the moving rod 705 drives the grinding block 707 to move outwards and extend out of the groove 704, the grinding block 707 moves outwards to grind materials in the screw channel, and because the rotation speed of the screw rod 3 is high, the outward extending frequency of the grinding block 707 is high, the grinding blocks 707 can thus continuously grind the material, so that the solid plastic particles can be better melted.
Please refer to fig. 1, the driving mechanism 2 includes a driving motor 201 located at the top of the plastic injection barrel 1, an output end of the driving motor 201 is connected with a rotating shaft 202 penetrating to the inside of the through hole 101 in a welding manner, and the bottom of the rotating shaft 202 is detachably connected with the top of the screw rod 3 through a bolt.
This kind of injection mold's injection mechanism can be convenient for rotate screw rod 3 through actuating mechanism 2 that sets up, and actuating mechanism 2 is not only limited to including driving motor 201 simultaneously, still can include the unit that melts that makes the molten liquid of moulding plastics melt fast, like heating puddler.
Please refer to fig. 1, 2 and 4, a clamping groove 15 is disposed on an outer wall of the second straight surface 801 above the material conveying plate 9, and a clamping block 14 slidably connected with the clamping groove 15 is welded to an inner wall of the first straight cylinder 5.
This kind of injection mold's injection molding mechanism can be through the fixture block 14 that sets up with draw-in groove 15 block each other, and the latter half of annotating plastic barrel 1 simultaneously can be dismantled rather than the upper half through the bolt and be connected, and then the piston 8 of being convenient for passes through the relation block to the inside of injection molding storage bucket 1 between fixture block 14 and draw-in groove 15.
Please refer to fig. 1 and 2, a heating mechanism 16 is disposed outside the plastic injection barrel 1, the heating mechanism 16 includes a heating plate and a control switch for controlling the heating plate, the heating plate has at least ten groups, and the ten groups of heating plates are uniformly distributed on the outer wall of the plastic injection barrel 1.
This kind of injection mold's mechanism of moulding plastics is ten groups at least through the hot plate that sets up, can heat effectively fast and melt solid plastic granules, and is swift high-efficient.
Please refer to fig. 1 and 2, the bottom end of the inner wall of the first straight tube 5 is welded with a first spring 703, and the top end of the first spring 703 is welded with the outer wall of the lifting rod 701.
This kind of injection mold's mechanism of moulding plastics can help when injection molding storage bucket 1 does not use to support piston 8 through the first spring 703 that sets up, and then makes the first annular tooth 10 of piston 8 bottom can be with second annular tooth 11 intermeshing tightly, realizes better sealed effect.
Please refer to fig. 1, 2 and 5, the spiral stirring vane 4 and the inside of the through hole 101 form a spiral channel, the milling block 707 is located in the spiral channel and is spirally parallel to the spiral stirring vane 4, the outer wall of the milling block 707 is an arc structure, the number of the protrusions 702 is the same as that of the moving rods 705, and the protrusions 702 are spirally and uniformly distributed on the outer side of the lifting rod 701.
This kind of injection mold's mechanism of moulding plastics is the same with protruding 702's figure through the grinding block 707 figure that sets up, and the grinding block 707 is the spiral parallel state with spiral stirring leaf 4 in being located helical channel, and the arcwall face of grinding block 707 outer wall is the same with the radian of screw rod 3 outer wall simultaneously for the arcwall face in the grinding block 707 outside can fill the opening in the recess 704 outside and make the outer wall of screw rod 3 be the smooth state, is convenient for pay-off better.
The working principle is as follows: when the device is used, a power supply is switched on and the driving mechanism 2 is started, the driving motor 201 on the driving mechanism 2 drives the screw rod 3 to rotate, the heating plate on the heating mechanism 16 is clamped at the moment, solid plastic particles are fed into the screw rod 3 in the plastic injection barrel 1 from the feeding hole 104 to rotate, the spiral stirring blade 4 is driven to rotate and stir, meanwhile, as the piston 8 can be clamped in the screw rod 3, the piston 8 can also be driven to rotate when the screw rod 3 rotates, so that the first annular tooth 10 at the bottom of the piston 8 rotates, the first annular tooth 10 is meshed with the second annular tooth 11 in an initial state, after the first annular tooth 10 rotates, a wave peak on the first annular tooth 10 sequentially corresponds to a wave peak and a wave trough on the second annular tooth 11, and therefore, the first annular tooth 10 drives the piston 8 to move up and down when being in contact with the second annular tooth 11, at this time, the piston 8 drives the lifting rod 701 to move up and down, when the lifting rod 701 rises, the protrusion 702 on the outer side of the lifting rod 701 can contact one end of the moving rod 705 when moving upwards, so that the moving rod 705 drives the grinding block 707 to move outwards and extend out of the groove 704, the grinding block 707 moves outwards to roll the material inside the spiral channel, because the rotating speed of the screw rod 3 is high, the outward extending frequency of the grinding block 707 is high, so the grinding block 707 can roll the material continuously, solid plastic particles can be melted better, and meanwhile, when the grinding block 707 extends out of the groove 704, a small gap can be formed between the grinding block 707 and the inner wall of the first straight surface 102 inside the through hole 101, so that a filtering channel is formed, only molten injection molding liquid can pass through, most of plastic particles can be blocked, and the plastic particles which are not melted can be heated and melted in enough time, avoiding the existence of larger plastic particles, when the molten injection liquid flows to the joint of the first straight surface 102 and the first conical surface 103 and then starts to be stirred and rotated by the material conveying plates 9, because one side of the material conveying plates 9 is an inclined surface 901, the longitudinal section of the material conveying plates 9 is in a right trapezoid shape, a material conveying channel which is gradually reduced from top to bottom is formed between every two groups of material conveying plates 9, when the molten injection liquid passes through the material conveying channel, because the aperture of the material conveying channel is gradually reduced, proper extrusion can be formed, and because the material conveying plates 9 rotate, the extrusion effect is more obvious under the action of centrifugal force, so that the existence of solid particles is reduced, and simultaneously when the first annular tooth 10 and the second annular tooth 11 are meshed with each other, the solid particles which can be remained can be finally ground, so that the quality of the discharged molten injection liquid is better, and bubbles can be eliminated when the solid particles are meshed, the generation of bubbles is avoided, when the first annular tooth 10 rotates, the wave crest on the first annular tooth 10 corresponds to the wave crest on the second annular tooth 11, at the moment, a channel is formed between the first annular tooth 10 and the second annular tooth 11, so that the molten injection liquid can flow into the discharging channel 12 from the hole in the middle of the second annular tooth 11, and can collide with each other after passing through the hole, so that the melting effect is better, solid particles do not exist in the plastic product, and simultaneously, the appearance and the quality of the plastic product cannot be influenced by the generation of larger bubbles in the plastic product are ensured, when the molten injection liquid flows into the discharging channel 12, the heating pipe 13 can reheat the output molten injection liquid, the real-time temperature of the injection liquid can be ensured, the production quality of the plastic product is also ensured, and when the work is not needed, the first annular teeth 10 slide down on the slope surfaces of the second annular teeth 11 and are meshed with the second annular teeth 11 again, so that the interior of the plastic injection barrel 1 is sealed, and the next use is facilitated.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. An injection molding mechanism of an injection mold comprises an injection molding barrel (1), a screw rod (3) and a driving mechanism (2), and is characterized in that a through hole (101) is formed in the injection molding barrel (1), the screw rod (3) is located in the through hole (101), a first straight barrel (5) and a second straight barrel (6) are sequentially arranged in the screw rod (3) from bottom to top, the first straight barrel (5) is communicated with the second straight barrel (6), a mixing mechanism (7) is arranged in the second straight barrel (6), a piston (8) is arranged in the first straight barrel (5), the piston (8) comprises a second straight surface (801) and a second tapered surface (802), a material conveying plate (9) is welded and connected to the outer wall of the second straight surface (801) on the outer side of the piston (8), and an inclined surface (901) is arranged on one side of the material conveying plate (9), the outer wall of the outer side of the piston (8) on the second conical surface (802) is connected with first annular teeth (10) in a welding mode, the inner wall of the inner side of the through hole (101) on the first conical surface (103) is connected with second annular teeth (11) in a welding mode, and the second annular teeth (11) are meshed with the first annular teeth (10) in a mutually meshed mode;
the through hole (101) comprises a first straight surface (102) and a first conical surface (103), feed inlets (104) penetrating into the through hole (101) are formed in two sides of the plastic injection barrel (1), the bottom, located in the through hole (101), of the interior of the plastic injection barrel (1) is communicated with a blanking channel (12), heating pipes (13) are installed at the bottom end of the interior of the plastic injection barrel (1), at least six groups of heating pipes (13) are arranged, and the six groups of heating pipes (13) are located on two sides of the blanking channel (12) respectively;
mixing mechanism (7) is including being located inside lifter (701) of the straight section of thick bamboo of second (6), and the bottom of lifter (701) and the top welded connection of piston (8), the outside of lifter (701) is provided with protruding (702), mixing mechanism (7) is still including being located inside recess (704) of screw rod (3), and one side welded connection of recess (704) inner wall has second spring (706), the one end welded connection of second spring (706) has carriage release lever (705) that runs through to the straight section of thick bamboo of second (6) inside, and one side welded connection of carriage release lever (705) has grinding block (707) that is located recess (704) inside.
2. The injection mechanism of an injection mold according to claim 1, wherein: actuating mechanism (2) are including being located driving motor (201) of annotating plastic barrel (1) top, the output welded connection of driving motor (201) has pivot (202) of running through to through-hole (101) inside, the bottom of pivot (202) passes through the bolt with the top of screw rod (3) and can dismantle the connection.
3. The injection mechanism of an injection mold according to claim 1, wherein: a clamping groove (15) is formed in the outer wall of the second straight surface (801) and located above the material conveying plate (9), and a clamping block (14) in sliding connection with the clamping groove (15) is welded to the inner wall of the first straight cylinder (5).
4. The injection mechanism of an injection mold according to claim 1, wherein: the plastic injection barrel is characterized in that a heating mechanism (16) is arranged on the outer side of the plastic injection barrel (1), the heating mechanism (16) comprises heating plates and control switches for controlling the heating plates, the heating plates are at least ten groups, and the ten groups of heating plates are uniformly distributed on the outer wall of the plastic injection barrel (1).
5. The injection mechanism of an injection mold according to claim 1, wherein: the bottom end of the inner wall of the first straight cylinder (5) is connected with a first spring (703) in a welding mode, and the top end of the first spring (703) is connected with the outer wall of the lifting rod (701) in a welding mode.
6. The injection mechanism of an injection mold according to claim 1, wherein: spiral stirring leaf (4) and through-hole (101) inside have formed spiral passage, grinding block (707) are located spiral passage and are parallel with spiral stirring leaf (4) spiral, and the outer wall of grinding block (707) is the arc structure.
7. The injection mechanism of an injection mold according to claim 1, wherein: the number of the bulges (702) is the same as that of the movable rods (705), and the bulges (702) are uniformly distributed on the outer side of the lifting rod (701) in a spiral shape.
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| CN114782428A (en) * | 2022-06-17 | 2022-07-22 | 南通格冉泊精密模塑有限公司 | Injection molding bubble defect detection and cause analysis method and artificial intelligence system |
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