CN117532805B - Household electrical appliances shell injection moulding mould - Google Patents
Household electrical appliances shell injection moulding mould Download PDFInfo
- Publication number
- CN117532805B CN117532805B CN202410026302.XA CN202410026302A CN117532805B CN 117532805 B CN117532805 B CN 117532805B CN 202410026302 A CN202410026302 A CN 202410026302A CN 117532805 B CN117532805 B CN 117532805B
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- fixedly connected
- shell
- injection molding
- sleeve
- plastic
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 63
- 239000004033 plastic Substances 0.000 claims abstract description 93
- 229920003023 plastic Polymers 0.000 claims abstract description 93
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000009467 reduction Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000012778 molding material Substances 0.000 claims 3
- 238000002347 injection Methods 0.000 abstract description 12
- 239000007924 injection Substances 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction 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
- B29C45/03—Injection moulding apparatus
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/006—Degassing moulding material or draining off gas during moulding
-
- 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
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
-
- 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
- B29C45/26—Moulds
-
- 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
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
-
- 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
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
-
- 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
- B29C45/58—Details
- B29C45/63—Venting or degassing means
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
Abstract
The invention relates to the technical field of injection molds and discloses an injection molding mold for household appliance shells, which comprises a support, a male mold and a female mold, wherein the male mold is slidably arranged on the support, the female mold is fixedly arranged on the support and forms an injection molding cavity with the male mold, one side of the female mold is fixedly provided with a shell, the side wall of the shell is provided with a plurality of uniformly distributed electric heaters, the upper end of the shell is fixedly connected with a hopper, a conveying mechanism is arranged in the shell and is used for conveying plastics in a molten state and can pressurize the plastics injected into the injection molding cavity, one side of the female mold is provided with a mounting opening, the mounting opening is fixedly connected with a mounting block, and an exhaust mechanism is arranged in the mounting block. This household electrical appliances shell injection molding mould can exert pressure the propelling movement to the plastics in the die cavity, makes plastics receive enough pressure and avoids appearing hollowing and influence the quality of plastics finished product, also can the air in the efficient discharge die cavity simultaneously, avoids appearing the exhaust passage jam.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection molding mold for a household appliance shell.
Background
When injection molding, molten plastic flows into a mold cavity from an inlet, air at the end part of the cavity cannot be discharged, and becomes 'dead air', 'trapped air', when flowing glue continuously flows in, air is compressed under the action of pressure, when the air is continuously compressed, the temperature is continuously increased, the counter pressure is continuously increased, so that the raised temperature is enough to burn the plastic, and moreover, no matter how much pressure is added, the trapped air cannot be compressed to zero, that is, no matter how much injection molding pressure is added by an injection molding machine, the flowing glue can never flow to an end point, and the dimensional accuracy of a product cannot be ensured, therefore, the position of an exhaust system in the mold is quite important, the existing exhaust method for a more complex structure is generally provided with an exhaust insert at a position where the 'trapped air' is easy to appear, and the air in the mold is discharged through an exhaust channel in the exhaust insert. However, for products with complex structures, the specific position of the trapped air is difficult to judge, even if the same product has different positions of the trapped air every time, the problem that the gas is blocked by the exhaust insert and is difficult to exhaust is easily caused, however, the problems that molten plastic flows into a gap to block an exhaust channel and flash and the like are caused when gaps between the exhaust inserts are too dense or too wide.
At present, although the air in the cavity can be exhausted through the insert exhaust, the problems that molten plastic flows into a gap to block an exhaust channel and flash and the like occur when the gap between the inserts is too dense or too wide, and the molten plastic cannot be continuously pressed after entering the cavity, so that the fluidity of the molten plastic at a narrow place is poor, and the probability of occurrence of defective products is increased.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides the injection molding die for the household appliance shell, which has the advantages that the plastic in the cavity can be continuously pressurized to flow, the plastic is subjected to enough pressure to avoid hollowing to influence the quality of a plastic finished product, and simultaneously, the exhaust channel is effectively exhausted to avoid blocking, and the like, and solves the problems that the traditional die can cause molten plastic to flow into a gap to block the exhaust channel to generate flash when the molten plastic is exhausted at any time, and the molten plastic cannot be continuously pressurized after entering the cavity, so that the fluidity of the molten plastic at a narrow place is poor, and the probability of defective products is increased.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a household electrical appliances shell injection molding mould, includes support, public mould and master mould, public mould slidable mounting is on the support, the master mould fixed mounting forms the injection molding chamber on the support with the public mould between, one side fixed mounting of master mould has the shell, the lateral wall of shell installs a plurality of evenly distributed's electric heater, the upper end fixedly connected with hopper of shell, install conveying mechanism in the shell;
the conveying mechanism is used for conveying the plastic in a molten state and can pressurize the plastic injected into the injection cavity;
a mounting opening is formed in one side of the female die, a mounting block is fixedly connected in the mounting opening, and an exhaust mechanism is arranged in the mounting block;
the exhaust mechanism is used for exhausting air in the injection cavity, and can extrude the plastic entering the exhaust mechanism to maintain the flatness of the surface of a plastic finished product;
the shell passes through supporting component and installs on the support, the one end of shell is equipped with the beam mouth, one side fixedly connected with sleeve pipe of beam mouth, sheathed tube one end fixedly connected with discharge gate, discharge gate fixed connection is in the mouth department of moulding plastics on the master model.
Preferably, the conveying mechanism comprises a sleeve and a cover body, one end of the shell is provided with an opening and is fixedly connected with one side of the cover body, the sleeve is sleeved in the opening in a sliding manner, one side of the sleeve is rotationally connected with a transverse shaft through a sealing bearing assembly, a spiral blade is fixedly connected to the shaft wall of the transverse shaft, one end of the sleeve is fixedly connected with a speed reduction motor, and the output end of the speed reduction motor is fixedly connected with one end of the transverse shaft through a coupling;
two fixed plates are symmetrically and fixedly connected to one side of the sleeve, one ends of the two fixed plates, which are opposite, are in sliding connection with the inner wall of the cover body, two guide rods are slidably connected to one side of the fixed plates through guide holes, the two guide rods are fixedly connected with the inner wall of the cover body, two support plates are fixedly connected to the cover body, two hydraulic cylinders are fixedly connected to the two support plates, and the output ends of the two hydraulic cylinders are fixedly connected with one sides of the two fixed plates respectively.
Preferably, one end fixedly connected with cylinder of cross axle, the diameter of cylinder cooperatees with the internal diameter of cover pipe, be equipped with the cavity in the cylinder, a plurality of through-holes have been seted up in running through between the lateral wall of cavity and cylinder, the blind hole has been seted up to the one end of cross axle, and blind hole and cavity intercommunication, a plurality of material passageway have been seted up to the lateral wall of cross axle, material passageway and blind hole intercommunication.
Preferably, a boss is arranged in the binding part, one side of the boss is fixedly connected with an elbow, and one end of the elbow is fixedly connected with one side of the shell.
Preferably, a striker plate is fixedly connected to the shaft wall of the transverse shaft, and the edge of the striker plate is matched with the inner side of the shell.
Preferably, the exhaust mechanism comprises a plunger, one side of the plunger is fixedly connected with a jack post, one side of the mounting block is provided with a cylindrical groove, the cylindrical groove is matched with the side wall of the jack post, one side of the cylindrical groove is provided with an exhaust hole, the plunger is sleeved in the exhaust hole, one side of the exhaust hole is provided with a diversion hole, one end of the diversion hole is communicated with one side of the cylindrical groove, one side of the jack post is provided with a diversion channel, and a flow velocity sensor is fixedly connected in the diversion channel;
and one side of the jacking column is provided with a transmission assembly, and the transmission assembly is used for driving the jacking column and the plunger to move.
Preferably, the transmission assembly comprises a screw rod, one side of the jack post is in threaded connection with the screw rod through a threaded hole, the screw rod is rotationally connected with an end cover through a rolling bearing, the end cover is fixed on one side of the installation block, one side of the end cover is fixedly connected with a transmission motor, the output end of the transmission motor is fixedly connected with a worm, a worm wheel is meshed on the rod wall of the worm, and the worm wheel is fixed on the rod wall of the screw rod.
Preferably, the side wall of the mounting block is symmetrically and fixedly connected with two limit sliding blocks through rectangular holes, two limit sliding grooves are symmetrically formed in the side wall of the jacking column, and the two limit sliding grooves are respectively matched with the two limit sliding blocks.
(III) beneficial effects
Compared with the prior art, the invention provides the injection molding die for the household appliance shell, which has the following beneficial effects:
1. when the plastic injection molding machine is used, after plastic particles are heated and melted in the shell, the conveying mechanism works to convey the plastic in a molten state into the injection molding cavity through the discharge nozzle, after the plastic gradually enters the injection molding cavity, the exhaust mechanism is opened to discharge air extruded by the plastic, so that the injection molding speed is improved, when the injection molding is finished, the exhaust mechanism is actively closed, the plastic is prevented from entering the exhaust mechanism, the flatness of the surface of a plastic finished product can be maintained, after the exhaust mechanism is closed, the conveying mechanism is used for directly pushing and pressurizing the plastic in the shell, so that the plastic in the injection molding cavity is continuously pressurized and flows, the plastic can be subjected to enough pressure, and the phenomenon that the quality of the plastic finished product is influenced by hollowness is avoided.
2. When the plastic injection molding machine is used, the speed reducing motor directly drives the transverse shaft to drive the spiral blades to push molten plastic to advance, at the moment, the plastic enters the sleeve and enters the injection molding cavity through the discharge nozzle, when the plastic in the injection molding cavity is enough, the hydraulic cylinder starts to push the fixing plate to enable the sleeve to move, the sleeve moves to drive the transverse shaft to enable the cylinder to be inserted into the sleeve, the diameter of the sleeve is matched with that of the cylinder, at the moment, the cylinder can forcedly extrude the plastic in the sleeve into the injection molding cavity, further, the plastic in the mold can be pressurized after injection molding is completed, the fluidity of the plastic is increased, when the cylinder moves into the sleeve, the cylinder moves away from the pipe orifice of the bent pipe on the boss, at the moment, the plastic in a molten state flows back into the shell along the bent pipe, so that the operation of the speed reducing motor is not needed to be stopped in a gap for stopping injection molding, the plastic circulation flow can be realized, the uniformity after the plastic is melted is increased, the hopper is closed, when the cylinder does not completely enter the sleeve, at the moment, the continuous conveying of the spiral blades can forcedly extrude the plastic from the through hole in the injection cavity into the blind hole, and the plastic can be directly extruded from the plastic through the extrusion hole by the spiral blades, and the plastic can be prevented from being directly contained by the surface of the plastic after the plastic is extruded by the plastic.
3. The invention is provided with the exhaust mechanism, when injection molding is performed, air discharged by plastic extrusion enters the diversion hole along the exhaust hole, the air in the diversion hole passes through the diversion channel to be directly discharged, so that the air in the mold can be rapidly discharged when injection molding is performed, when the injection molding cavity is filled with plastic, the exhaust speed in the mold is reduced, the flow speed sensor detects the reduction of the air flow speed, at the moment, an external controller receives a signal and then controls the driving motor to work, the driving motor works to drive the worm wheel to rotate, the worm wheel rotates to drive the screw rod to push the jack post to move, the jack post moves to drive the plunger to rapidly move to seal the diversion hole, and at the moment, the plunger continues to move to be flush with the inner side surface of the female die, so that the exhaust hole can be rapidly filled, and a small amount of plastic entering the exhaust hole is ejected, so that the flatness of the surface of a plastic product can be ensured while the plastic product is exhausted.
Drawings
Fig. 1 is a schematic diagram of an injection molding mold for a housing of a household appliance according to the present invention;
fig. 2 is a cross-sectional view of fig. 1 in an injection molding mold for a housing of a household appliance according to the present invention;
fig. 3 is a schematic structural diagram of the gear motor, the hydraulic cylinder, the sleeve and the cover in fig. 2 of the injection molding mold for the housing of the household appliance according to the present invention;
fig. 4 is a schematic structural diagram of a housing, a helical blade, a transverse shaft and a sleeve in an injection molding mold for a housing of a household appliance according to the present invention;
fig. 5 is a schematic structural diagram of a housing and a sleeve in an injection molding mold for a housing of a household appliance according to the present invention;
fig. 6 is a cross-sectional view of a cross shaft and a cylinder in an injection molding mold for a housing of a household appliance according to the present invention;
FIG. 7 is a cross-sectional view of a male mold and a female mold in an injection molding mold for a housing of a household appliance according to the present invention;
fig. 8 is an enlarged view of the structure of the injection molding mold of the housing of the household appliance at a position a in fig. 7;
fig. 9 is a schematic structural diagram of an exhaust mechanism in an injection mold for a housing of a household appliance according to the present invention;
fig. 10 is a schematic structural diagram II of a housing, a helical blade, a transverse shaft and a sleeve in an injection molding mold for a housing of a household appliance according to the present invention;
fig. 11 is a schematic structural diagram of a housing, a helical blade, a transverse shaft and a sleeve in an injection molding mold for a housing of a household appliance according to the present invention.
In the figure: 1. a bracket; 2. a master mold; 3. a male mold; 4. an end cap; 5. an electric heater; 6. a housing; 7. a hopper; 8. a cover body; 9. a hydraulic cylinder; 10. a speed reducing motor; 11. a beam mouth; 12. bending the pipe; 13. a mounting block; 14. a cylinder; 15. a horizontal axis; 16. a helical blade; 17. a guide rod; 18. a fixing plate; 19. a sleeve; 20. a discharge nozzle; 21. an injection cavity; 22. a support plate; 23. a sleeve; 24. a through hole; 25. a material passing channel; 26. a striker plate; 27. a boss; 28. a blind hole; 29. a limit sliding block; 30. a drive motor; 31. an exhaust hole; 32. a plunger; 33. a top column; 34. a worm wheel; 35. a worm; 36. a screw rod; 37. a flow rate sensor; 38. a deflector aperture; 39. a diversion channel.
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.
Example 1
Referring to fig. 1-11, an injection molding die for a household appliance shell comprises a bracket 1, a male die 3 and a female die 2, wherein the male die 3 is slidably arranged on the bracket 1, the female die 2 is fixedly arranged on the bracket 1 and forms an injection molding cavity 21 with the male die 3, one side of the female die 2 is fixedly provided with a shell 6, the side wall of the shell 6 is provided with a plurality of uniformly distributed electric heaters 5, the upper end of the shell 6 is fixedly connected with a hopper 7, a conveying mechanism is arranged in the shell 6 and is used for conveying plastic in a molten state and can pressurize the plastic injected into the injection molding cavity 21, one side of the female die 2 is provided with a mounting opening, the mounting opening is fixedly connected with a mounting block 13, an exhaust mechanism is arranged in the mounting block 13 and is used for exhausting air in the injection molding cavity 21, the exhaust mechanism can extrude the plastic entering the exhaust mechanism to keep the flatness of the surface of a plastic finished product, the shell 6 is arranged on the bracket 1 through a supporting component, one end of the shell 6 is provided with a beam opening 11, one side of the beam opening 11 is fixedly connected with a sleeve 23, one end of the sleeve 23 is fixedly connected with a discharge nozzle 20, and the discharge nozzle 20 is fixedly connected with the position of the female die 20 on the female die 2.
The plastic particles enter the shell 6 through the hopper 7, are heated and melted in the shell 6 by the electric heater 5, are conveyed and injection molded by the conveying mechanism arranged in the shell, are widely used in life, are known by those skilled in the art, and are not redundant.
When the plastic injection molding machine is used, after plastic particles are heated and melted in the shell 6, the conveying mechanism works to inject the plastic in a molten state into the injection molding cavity 21 through the discharge nozzle 20, after the plastic gradually enters the injection molding cavity 21, the exhaust mechanism is opened to discharge air extruded by the plastic, so that the injection molding speed is improved, when the injection molding is finished, the exhaust mechanism is actively closed to prevent the plastic from entering the exhaust mechanism, so that the flatness of the surface of a plastic finished product can be maintained, and after the exhaust mechanism is closed, the conveying mechanism is used for directly pushing and pressurizing the plastic in the shell 6, so that the plastic in the injection molding cavity is continuously pressurized and flows, the plastic can be subjected to enough pressure, and the phenomenon that the quality of the plastic finished product is influenced by hollowness is avoided.
Example 2: the difference is based on example 1;
referring to fig. 3-6 and fig. 10-11, the conveying mechanism comprises a sleeve 19 and a cover body 8, one end of the housing 6 is provided with an opening and is fixedly connected with one side of the cover body 8, the sleeve 19 is sleeved in the opening in a sliding manner, one side of the sleeve 19 is rotationally connected with a transverse shaft 15 through a sealed bearing assembly, a spiral blade 16 is fixedly connected to the shaft wall of the transverse shaft 15, one end of the sleeve 23 is fixedly connected with a gear motor 10, and the output end of the gear motor 10 is fixedly connected with one end of the transverse shaft 15 through a coupler;
one side symmetry fixedly connected with two fixed plates 18 of sleeve 19, the one end that two fixed plates 18 are in opposite directions all with the inner wall sliding connection of cover 8, two guide bars 17 of one side of fixed plate 18 through guiding hole sliding connection, two guide bars 17 all with the inner wall fixed connection of cover 8, the fixed connection has two backup pads 22 in the cover 8, all fixedly connected with pneumatic cylinder 9 on two backup pads 22, the output of two pneumatic cylinders 9 respectively with one side fixed connection of two fixed plates 18, the one end fixedly connected with cylinder 14 of cross axle 15, the diameter of cylinder 14 cooperatees with the internal diameter of sleeve 23, be equipped with the cavity in the cylinder 14, a plurality of through-holes 24 have been run through between the lateral wall of cavity and cylinder 14, blind hole 28 has been seted up to one end of cross axle 15, and blind hole 28 communicate with the cavity, a plurality of material passageway 25 have been seted up to the lateral wall of cross axle 15, material passageway 25 communicates with blind hole 28, be equipped with boss 27 in the beam mouth 11, the boss 27 upper end is laminated with the lateral wall of cylinder 14, and one side fixed connection 12 of boss 27, the one side fixed connection of cross axle 15 has baffle plate 26 on the lateral wall of baffle plate 6 of side fixed connection of side of return bend 6 and baffle plate 26 of fixed connection with the inboard flange 6 of return bend 6.
The invention is provided with a conveying mechanism, when in use, a gear motor 10 directly drives a transverse shaft 15 to drive a spiral blade 16 to push molten plastic to advance, at the moment, the plastic enters a sleeve 23 and enters an injection cavity 21 through a discharge nozzle, when the plastic in the injection cavity 21 is enough, a hydraulic cylinder 9 starts to push a fixing plate 18 to move a sleeve 19, the sleeve 19 moves to drive the transverse shaft 15 to enable a cylinder 14 to be inserted into the sleeve 23, and because the diameter of the sleeve 23 is matched with that of the cylinder 14, the cylinder 14 can forcedly squeeze the plastic in the sleeve 23 to enter the injection cavity 21, so that the plastic in a die can be pressurized after injection is finished, the fluidity of the plastic is increased, in addition, as shown in figure 11, when the cylinder 14 moves into the sleeve 23, the cylinder 14 moves away from the pipe orifice of an elbow 12 on a boss 27, at this time, due to the continuous conveying of the helical blades 16, the molten plastic flows back into the casing 6 along the elbow 12, so that the operation of the speed reducing motor 10 is not required to be stopped in a gap for stopping injection molding, and the circulation pushing of the plastic in the casing 6 can be realized, so that the uniformity of the molten plastic is improved, as shown in fig. 10, the feeding of the hopper 7 is closed, when the cylinder 14 does not completely enter the sleeve 23, at this time, under the continuous conveying of the helical blades 16, the plastic enters the blind holes 28 from the through holes 24 on the cylinder 14 and is discharged from the material passing channel 25, at this time, the helical blades 16 can be used for continuously pressurizing the plastic, and the compressed plastic can extrude air bubbles entrained in the plastic by virtue of the self-flowing, so that the plastic containing the air bubbles can be prevented from directly entering the mold, and the surface of a finished plastic product is prevented from generating pits.
Example 3: the difference is based on example 1;
referring to fig. 7-9, the exhaust mechanism comprises a plunger 32, a jack post 33 is fixedly connected to one side of the plunger 32, a cylindrical groove is formed in one side of the mounting block 13 and matched with the side wall of the jack post 33, an exhaust hole 31 is formed in one side of the cylindrical groove, the plunger 32 is sleeved in the exhaust hole 31, a diversion hole 38 is formed in one side of the exhaust hole 31, one end of the diversion hole 38 is communicated with one side of the cylindrical groove, a diversion channel 39 is formed in one side of the jack post 33, and a flow velocity sensor 37 is fixedly connected in the diversion channel 39;
the transmission assembly is installed to one side of jack post 33, transmission assembly is used for driving jack post 33 and plunger 32 to remove, transmission assembly includes lead screw 36, one side of jack post 33 is through screw hole and lead screw 36 threaded connection, lead screw 36 is connected with end cover 4 through antifriction bearing rotation, end cover 4 is fixed in one side of installation piece 13, leave the exhaust gap between end cover 4 and the installation piece 13, one side fixedly connected with driving motor 30 of end cover 4, driving motor 30's output fixedly connected with worm 35, the meshing has worm wheel 34 on the wall of worm 35, worm wheel 34 is fixed on the wall of lead screw 36, two spacing sliders 29 of lateral wall symmetry of jack post 33 have been seted up through rectangular hole symmetry, two spacing sliders cooperate with two spacing sliders 29 respectively.
The electric signal detected by the flow rate sensor 37 is transmitted to an external controller, and the controller receives the electric signal and converts the electric signal into a control signal to control the operation of the driving motor 30, which is widely used in life and will not be described herein.
According to the invention, the exhaust mechanism is arranged, during injection molding, air discharged by plastic extrusion enters the guide hole 38 along the exhaust hole 31, the air in the guide hole 38 passes through the guide channel 39 and is directly discharged, so that the air in the mold can be rapidly discharged during injection molding, when the plastic is filled in the injection molding cavity 21, the internal exhaust speed is reduced, the flow rate sensor 37 detects the reduction of the air flow rate, at the moment, the external controller controls the driving motor 30 to work after receiving a signal, the driving motor 30 works to drive the worm 35 to rotate, the worm wheel 34 rotates to drive the screw rod 36 to push the jack post 33 to move, the jack post 33 moves to drive the plunger 32 to rapidly move to block the guide hole 38, and the plunger 32 continuously moves to be flush with the inner side surface of the master mold 2, so that the exhaust hole 31 can be rapidly filled, a small amount of plastic entering the exhaust hole 31 is ejected, and the flatness of the surface of a plastic product can be ensured during exhaust.
It should be noted that the term "comprises," "comprising," or any other variation thereof is 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. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
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 (4)
1. The utility model provides a household electrical appliances shell injection moulding mould, includes support (1), public mould (3) and master model (2), public mould (3) slidable mounting is on support (1), master model (2) fixed mounting forms injection molding chamber (21) on support (1) and between public mould (3), its characterized in that: a shell (6) is fixedly arranged on one side of the female die (2), a plurality of uniformly distributed electric heaters (5) are arranged on the side wall of the shell (6), a hopper (7) is fixedly connected to the upper end of the shell (6), and a conveying mechanism is arranged in the shell (6);
the conveying mechanism comprises a sleeve (19) and a cover body (8), one end of a shell (6) is provided with an opening and is fixedly connected with one side of the cover body (8), the sleeve (19) is sleeved in the opening in a sliding manner, one side of the sleeve (19) is rotatably connected with a transverse shaft (15) through a sealing bearing assembly, a spiral blade (16) is fixedly connected to the shaft wall of the transverse shaft (15), one end of the sleeve (19) is fixedly connected with a speed reduction motor (10), the output end of the speed reduction motor (10) is fixedly connected with one end of the transverse shaft (15) through a coupler, the shell (6) is mounted on a bracket (1) through a supporting assembly, one end of the shell (6) is provided with a binding portion (11), one side of the binding portion (11) is fixedly connected with a sleeve (23), one end of the sleeve (23) is fixedly connected with a discharge nozzle (20), and the discharge nozzle (20) is fixedly connected to an injection molding port on a female die (2).
Two fixed plates (18) are symmetrically and fixedly connected to one side of the sleeve (19), one ends of the two fixed plates (18) are respectively and fixedly connected with the inner wall of the cover body (8) in a sliding manner, one side of the fixed plates (18) is provided with two guide rods (17) in a sliding manner through guide holes, the two guide rods (17) are respectively and fixedly connected with the inner wall of the cover body (8), two support plates (22) are fixedly connected to the inside of the cover body (8), hydraulic cylinders (9) are respectively and fixedly connected to one side of the two fixed plates (18) at the output ends of the two hydraulic cylinders (9), one end of the cross shaft (15) is fixedly connected with a cylinder (14), the diameter of the cylinder (14) is matched with the inner diameter of the sleeve (23), a cavity is formed in the cylinder (14), a plurality of through holes (24) are formed between the cavity and the side wall of the cylinder (14), one end of the cross shaft (15) is provided with a blind hole (28), the blind hole (28) is communicated with the cavity (15), and the blind hole (28) is communicated with the side wall of the injection molding material conveying mechanism (25), and the injection molding material conveying mechanism (25) is communicated with the injection molding material conveying mechanism;
a mounting opening is formed in one side of the female die (2), a mounting block (13) is fixedly connected in the mounting opening, and an exhaust mechanism is arranged in the mounting block (13);
the exhaust mechanism comprises a plunger (32), one side of the plunger (32) is fixedly connected with a jack post (33), one side of the installation block (13) is provided with a cylinder groove, the cylinder groove is matched with the side wall of the jack post (33), one side of the cylinder groove is provided with an exhaust hole (31), the plunger (32) is sleeved in the exhaust hole (31), one side of the exhaust hole (31) is provided with a diversion hole (38), one end of the diversion hole (38) is communicated with one side of the cylinder groove, one side of the jack post (33) is provided with a diversion channel (39), a flow velocity sensor (37) is fixedly connected in the diversion channel (39), one side of the jack post (33) is provided with a transmission assembly, and the transmission assembly is used for driving the jack post (33) and the plunger (32) to move;
the transmission assembly comprises a screw rod (36), one side of a jacking column (33) is in threaded connection with the screw rod (36) through a threaded hole, the screw rod (36) is rotationally connected with an end cover (4) through a rolling bearing, the end cover (4) is fixed on one side of a mounting block (13), one side of the end cover (4) is fixedly connected with a transmission motor (30), the output end of the transmission motor (30) is fixedly connected with a worm (35), a worm wheel (34) is meshed on the rod wall of the worm (35), the worm wheel (34) is fixed on the rod wall of the screw rod (36), and the exhaust mechanism is used for exhausting air in an injection molding cavity (21) and can extrude plastics entering the exhaust mechanism so as to keep the flatness of the surface of a plastic finished product.
2. The household appliance housing injection molding mold of claim 1, wherein: a boss (27) is arranged in the binding part (11), one side of the boss (27) is fixedly connected with an elbow (12), and one end of the elbow (12) is fixedly connected with one side of the shell (6).
3. The household appliance housing injection molding mold of claim 1, wherein: the shaft wall of the transverse shaft (15) is fixedly connected with a striker plate (26), and the edge of the striker plate (26) is matched with the inner side of the shell (6).
4. The household appliance housing injection molding mold of claim 1, wherein: the side wall of the mounting block (13) is symmetrically and fixedly connected with two limiting sliding blocks (29) through rectangular holes, two limiting sliding grooves are symmetrically formed in the side wall of the jacking column (33), and the two limiting sliding grooves are respectively matched with the two limiting sliding blocks (29).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410026302.XA CN117532805B (en) | 2024-01-09 | 2024-01-09 | Household electrical appliances shell injection moulding mould |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410026302.XA CN117532805B (en) | 2024-01-09 | 2024-01-09 | Household electrical appliances shell injection moulding mould |
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| CN117532805B true CN117532805B (en) | 2024-03-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211251198U (en) * | 2019-06-04 | 2020-08-14 | 江苏双马智能科技有限公司 | Mould vacuum pumping system |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211251198U (en) * | 2019-06-04 | 2020-08-14 | 江苏双马智能科技有限公司 | Mould vacuum pumping system |
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