CN113681834A - Effectual mould moulds plastics - Google Patents
Effectual mould moulds plastics Download PDFInfo
- Publication number
- CN113681834A CN113681834A CN202111018697.1A CN202111018697A CN113681834A CN 113681834 A CN113681834 A CN 113681834A CN 202111018697 A CN202111018697 A CN 202111018697A CN 113681834 A CN113681834 A CN 113681834A
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- Prior art keywords
- runner
- injection molding
- sprue
- mold
- cloth
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- 239000004033 plastic Substances 0.000 title claims abstract description 17
- 229920003023 plastic Polymers 0.000 title claims abstract description 17
- 239000004744 fabric Substances 0.000 claims abstract description 83
- 238000007789 sealing Methods 0.000 claims abstract description 75
- 238000001746 injection moulding Methods 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 230000000694 effects Effects 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000005192 partition Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 76
- 238000000465 moulding Methods 0.000 abstract description 8
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000004308 accommodation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2725—Manifolds
-
- 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
- B29C45/2608—Mould seals
-
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2737—Heating or cooling means therefor
-
- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2737—Heating or cooling means therefor
- B29C2045/2743—Electrical heating element constructions
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a mold with good injection molding effect, which comprises an upper mold and a lower mold, wherein a main runner is arranged at the top end inside the upper mold, the bottom of the main runner is communicated with a secondary runner, and heating elements are arranged on the inner walls of the main runner and the secondary runner, and the mold is characterized in that: the bottom end of the main flow channel is set as an output end, a flow control mechanism for controlling the size of an opening at the output end of the main flow channel is arranged at the bottom of the auxiliary flow channel in the upper die, the flow control mechanism comprises sealing cloth arranged at the bottom end of the main flow channel, and a flow guide channel is formed between the sealing cloth and the output end of the main flow channel; move upward and form a round platform form through sealed cloth, form a water conservancy diversion passageway between sprue and the sealed cloth this moment and supply the material circulation, the speed that the material passes through the water conservancy diversion passageway reduces, leads to the material to be lower at the inside speed that flows of side runner, though the temperature of side runner is lower this moment, but the velocity of flow of material also descends to some extent correspondingly, leads to side runner still to effectively heat the material to the assurance has good effect of moulding plastics.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a mold with a good injection molding effect.
Background
Plastics are a general name of articles for daily use and industrial products which are processed by adopting plastics as main raw materials. An injection mold is a tool used in the injection molding industry to match an injection molding machine and give the injection molded article a complete configuration and precise dimensions. Because of the variety of injection molding and processing methods, and the structure of injection molding machines and injection products are various, the variety and structure of injection molds are also various.
The Chinese patent CN105235151A discloses an injection mold, which comprises an upper mold and a lower mold, wherein the upper mold and the lower mold are cylindrical, the upper mold is arranged on the top wall of the lower mold, a mold cavity is formed between the upper mold and the lower mold, the top wall of the lower mold is provided with a plurality of grooves, the bottom surface of the upper mold is provided with a plurality of bulges matched with the grooves, the outer side of the bottom of the upper mold is provided with a plurality of first lugs, the outer side of the top of the lower mold is provided with a plurality of second lugs corresponding to the first lugs, the first lugs and the second lugs are fixedly connected through fixing bolts, and the second lugs are respectively provided with a vibration motor. The problems of complex structure, inconvenient operation and poor strength of an injection molding body of the existing injection mold are solved.
But this equipment lacks the structure of adjusting to the feed inlet size that lets in the material, in case when the inside temperature of runner changes, for example, when the inside temperature of runner is lower, the injection velocity of material does not change, and this just leads to because the flow velocity of material is very fast, can not fully carry out the problem of heating to the material in the inside of runner to influence the injection moulding effect in later stage.
Therefore, it is necessary to provide a mold with good injection molding effect to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a mold with a good injection molding effect, and the mold is used for solving the problem that the injection speed of a material is not changed when the temperature in the existing channel is low in the background art, so that the material cannot be sufficiently heated in the channel due to the high flowing speed of the material, and the later injection molding effect is influenced.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an effectual mould moulds plastics, includes mould and lower mould, goes up the inside top of mould and is provided with the sprue, and sprue bottom intercommunication has vice runner, all is provided with heating element, its characterized in that on sprue and the side runner inner wall: the utility model discloses a flow guide device, including the sprue, the sprue bottom sets up to the output, go up mould inside and be located side sprue bottom and be provided with the accuse mechanism of flowing of control sprue output end opening size, accuse mechanism is including setting up in the sealed cloth of sprue bottom, form the water conservancy diversion passageway between the output of sealed cloth and sprue, open or shrink through sealed cloth and adjust the size of water conservancy diversion passageway, when side sprue temperature rose, sealed cloth shrink for the water conservancy diversion passageway increases, when side sprue temperature reduced, sealed cloth expansion makes the water conservancy diversion passageway reduce.
When the injection molding machine is used specifically, the flow control mechanism is connected with the heating coil on the inner wall of the secondary flow channel, so that the heat of the secondary flow channel causes the flow control mechanism to expand with heat and contract with cold, the opening size of the output end of the main flow channel is further adjusted, the flow rate of a material entering the secondary flow channel through the main flow channel is further adjusted, the flow rate of the material in the secondary flow channel is further adjusted, when the temperature is higher, the staggered part of the flow control mechanism and the main flow channel is smaller, so that the opening size of the output end of the main flow channel is larger, the material flowing speed is higher, and the temperature in the secondary flow channel is higher at the moment, so that the material can be well heated even if the material flow rate is higher, the injection molding effect is better, when the temperature in the secondary flow channel is lower, the staggered part of the flow control mechanism and the output end of the main flow channel is increased, so that the opening size of the output end of the main flow channel is smaller, and the material flowing speed is lower at the moment, because the speed that the material flows is less, the inside temperature of in time auxiliary runner meets the end and also can have sufficient time to heat the material to be unlikely to influence the effect of moulding plastics, can adjust the velocity of flow of material according to the temperature of auxiliary runner in the in-service use process, thereby improve the effect of moulding plastics.
As a further scheme of the invention, the top end of the main runner is set as an input end, one side of the upper die opposite to one side of the lower die is provided with an injection molding cavity, and the auxiliary runner is arranged at the top of the injection molding cavity and communicated with the injection molding cavity.
When the material conveying device is used specifically, the auxiliary flow channel is communicated with the main flow channel, so that the material conveying is facilitated.
As a further scheme of the invention, the heating element is set as a heating coil, and the flow control mechanism is electrically connected with the heating coil on the inner wall of the secondary flow channel.
When the auxiliary runner heating device is used specifically, the auxiliary runner can be heated through the heating coil, so that the temperature of materials is kept, and the improvement of the flowability of the materials is facilitated.
As a further scheme of the present invention, the flow control mechanism further includes a first accommodating chamber and a second accommodating chamber, the first accommodating chamber is disposed at the bottom of the second accommodating chamber, and a support rod is fixedly connected between the first accommodating chamber and the second accommodating chamber.
The first and second receiving chambers facilitate the mounting of the seal portion and the annular bladder in particular use.
As a further scheme of the invention, a partition plate is arranged at the top of the first accommodating chamber, a through groove is arranged on the partition plate in a penetrating manner, a port is arranged on the first accommodating cavity, and a sealing cloth is arranged at the port at the top of the first accommodating chamber.
When the sealing cloth is used specifically, the port is arranged on the first accommodating cavity, so that the sealing cloth is favorably mounted.
As a further scheme of the invention, a supporting plate is arranged between the sealing cloth and the partition plate, the supporting plate is fixedly connected with the inner wall of the first accommodating chamber, a connecting plate is fixedly arranged at the central position of the sealing cloth, a sliding rod is fixedly connected to the bottom of the connecting plate, and the sliding rod penetrates through the first accommodating chamber and the second accommodating chamber and extends into the second accommodating chamber.
When the injection molding machine is used specifically, the slide rod moves upwards to drive the connecting plate and the sealing cloth on the outer side of the connecting plate to move upwards, the sealing cloth can form a circular truncated cone shape at the moment, when the connecting plate drives the top end of the sealing cloth to move to the output end of the main flow channel, a flow guide channel is formed between the main flow channel and the sealing cloth to supply material circulation, the connecting plate and the sealing cloth on the outer side of the connecting plate are driven to move upwards along with the slide rod continuously, the channel is made to reduce continuously, the rate of material passing through at the moment is reduced, the rate of material flowing inside the secondary channel is reduced, although the temperature of the secondary channel is lower at the moment, the flow rate of the material is also correspondingly reduced, the secondary channel is made to heat the material effectively, and the injection molding effect is good.
As a further scheme of the invention, a piston is connected in the second accommodating chamber in a sliding manner, an annular air bag is arranged at the top of the piston, a spring seat is arranged on one side of the piston, which is opposite to the bottom of the second accommodating chamber, and a spring is connected between the two spring seats.
When the sealing cloth is used, the volume of the annular air bag is increased to drive the piston to move downwards, so that the piston drives the slide rod to move downwards, the sealing cloth is connected between the connecting plate and the first accommodating chamber, when the slide rod moves downwards, the connecting plate can be driven to be communicated with the sealing cloth on the outer side of the connecting plate to move downwards to the port of the top of the first accommodating chamber, the sealing cloth is integrally in a horizontal state at the moment, the output end of the bottom of the main flow channel reaches the maximum, when the temperature in the auxiliary flow channel is lower, the heat transferred to the large heat sheet through the heating coil is reduced, so that the temperature in the second accommodating chamber is reduced, the volume of the annular air bag is reduced, at the moment, the piston can be driven to move upwards under the action force of the spring, so that the slide rod is driven to move upwards, the slide rod moves upwards to drive the connecting plate and the sealing cloth on the outer side of the connecting plate to move upwards, and the sealing cloth forms a round table shape, when the connecting plate drives the top of sealed cloth and moves to the output of sprue, form a water conservancy diversion passageway between sprue and the sealed cloth and supply the material circulation, along with the slide bar constantly drives the sealed cloth upward movement of connecting plate and its outside, make the passageway continuous reduce, the speed that the material passed through this moment reduces, it is lower to lead to the material to be at the speed of the inside flow of side runner, though the temperature of vice runner is lower this moment, but the velocity of flow of material also correspondingly descends, lead to side runner still can effectively heat the material, thereby guarantee to have good effect of moulding plastics.
As a further aspect of the present invention, a storage chamber is disposed inside the upper die, the storage chamber is disposed at the bottom end of the second accommodating chamber, a heat conducting strip is disposed inside the storage chamber, the heat conducting strip is annular, a cylindrical groove is disposed at the top of the storage chamber, and a conductive joint is disposed at the top of the heat conducting strip and electrically connected to the heating coil inside the secondary flow channel.
When the heating device is used specifically, the conductive connector is electrically connected with the heating coil inside the secondary flow channel, so that the second accommodating cavity is heated.
According to a further scheme of the invention, the front side and the rear side of the upper die are respectively provided with an exhaust channel, one end of each exhaust channel is communicated with the first accommodating cavity, the other end of each exhaust channel is provided with a sealing bolt, the sealing bolt is in threaded connection with the upper die, the top of each exhaust channel is communicated with a measuring channel, a measuring rod is arranged in each measuring channel and is connected to the inside of each measuring channel in a sliding mode, and the outer side of each measuring rod is provided with scale marks.
During specific use, the state of the sealing cloth at the moment can be seen through the scale marks on the measuring rod, so that the size of the flow guide channel at the moment is obtained, the heating coil in the auxiliary flow channel can be better controlled, the temperature in the auxiliary flow channel can be better controlled, and the injection molding effect of the material can be improved.
The working principle is as follows: when the heating coil is electrified and heated, the conductive connector connected with the heating coil is electrified, so that the heat conducting sheet is heated, when the heat conducting sheet is heated, the annular air bag in the second accommodating chamber is heated and expanded, so that the volume of the annular air bag is increased, at the moment, the volume of the annular air bag is increased, the piston can be driven to move downwards, so that the piston drives the slide rod to move downwards, the sealing cloth is connected between the connecting plate and the first accommodating chamber, so that when the slide rod moves downwards, the connecting plate can be driven to be communicated with the sealing cloth on the outer side of the connecting plate to move downwards to the port at the top of the first accommodating chamber, at the moment, the whole sealing cloth is in a horizontal state, the output end at the bottom of the main flow channel reaches the maximum, the speed of the material reaching the auxiliary flow channel through the main flow channel also reaches the maximum, at the moment, the temperature in the auxiliary flow channel is higher, and the material can be heated at a higher flow speed, and the heating effect is good, when the temperature in the secondary channel is low, the heat transferred to the large heat sheet through the heating coil is reduced, so that the temperature in the second accommodating chamber is reduced, the volume of the annular air bag is reduced, at the moment, the piston can be driven to move upwards under the action of the spring, so that the slide rod is driven to move upwards, the slide rod moves upwards to drive the connecting plate and the sealing cloth on the outer side of the connecting plate to move upwards, at the moment, the sealing cloth can form a circular table shape, when the connecting plate drives the top end of the sealing cloth to move to the output end of the main channel, a flow guide channel is formed between the main channel and the sealing cloth for material circulation, the connecting plate and the sealing cloth on the outer side of the connecting plate are driven to move upwards along with the slide rod, so that the channel is continuously reduced, at the moment, the material passing rate is reduced, so that the material flowing rate in the secondary channel is low, although the temperature of the secondary channel is low, but the flow velocity of the material is also correspondingly reduced, so that the secondary runner can still effectively heat the material, and the good injection molding effect is ensured.
According to the mold with good injection molding effect, when the temperature in the secondary runner is high, the material with high flow rate can be heated, when the temperature in the secondary runner is low, the volume of the annular air bag is reduced, the piston can be driven to move upwards under the action of the spring, the sealing cloth moves upwards and forms a circular truncated cone shape, a flow guide channel is formed between the main runner and the sealing cloth for the material to flow through, the speed of the material passing through the flow guide channel is reduced, the flow rate of the material in the secondary runner is low, and although the temperature of the secondary runner is low, the flow rate of the material is correspondingly reduced, so that the secondary runner can still effectively heat the material, and good injection molding effect is guaranteed.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the exterior of the upper die of the present invention;
FIG. 3 is a schematic view of the internal structure of the upper die of the present invention;
FIG. 4 is a cross-sectional view of the upper die of the present invention;
FIG. 5 is a schematic view of the primary and secondary flow channels of the present invention;
FIG. 6 is a schematic view of the sealing cloth of the present invention in a contracted configuration;
FIG. 7 is a schematic view of the open configuration of the sealing cloth of the present invention;
FIG. 8 is a schematic view of the structure of the heat conductive sheet of the present invention;
FIG. 9 is an enlarged view of portion A of FIG. 5 in accordance with the present invention;
FIG. 10 is an enlarged view of the portion B of FIG. 4 according to the present invention;
FIG. 11 is an enlarged view of the structure of section C of FIG. 8 according to the present invention.
In the figure: 1. an upper die; 2. a lower die; 3. injection molding a cavity; 4. a main flow channel; 5. an input end; 6. an output end; 7. a secondary flow passage; 8. a heat generating coil; 9. a first accommodation chamber; 10. a second accommodation chamber; 11. a support bar; 12. a partition plate; 13. a through groove; 14. a port; 15. sealing cloth; 16. a support plate; 17. a connecting plate; 18. a slide bar; 19. a piston; 20. an annular air bag; 21. a spring; 22. fixing the rod; 23. a storage chamber; 24. a heat conductive sheet; 25. a conductive joint; 26. an exhaust passage; 27. a seal bolt; 28. a measurement channel; 29. and (6) measuring the rod.
Detailed Description
During the use, drive through external equipment and go up mould 1 downstream and the laminating of lower mould 2, later with the material of moulding plastics usefulness through sprue 4 pour into mould 1 inside, then flow to side sprue 7 inside through sprue 4, and then flow to 3 insides of moulding plastics cavity through side sprue 7 and mould plastics, later will go up mould 1 jack-up through external equipment such as power equipment such as cylinder to the product that will mould plastics is taken out.
Embodiment 2, as shown in fig. 1-5 and fig. 9, a flow control mechanism for controlling the size of the opening of the output end 6 of the main runner 4 is disposed at the bottom of the secondary runner 7 inside the upper mold 1, and the flow control mechanism is connected to the heating coil 8 on the inner wall of the secondary runner 7, so that the heat of the secondary runner 7 causes the flow control mechanism to expand with heat and contract with cold, and further adjusts the size of the opening of the output end 6 of the main runner 4, so as to adjust the flow rate of the material entering the secondary runner 7 through the main runner 4, thereby adjusting the flow rate of the material inside the secondary runner 7, when the temperature is higher, the staggered portion of the flow control mechanism and the main runner 4 is smaller, so that the opening of the output end 6 of the main runner 4 is larger, the material flowing speed is faster, and the temperature inside the secondary runner 7 is higher, therefore, the material can be heated well even if the material flow rate is faster, and the injection molding effect is better, when the inside temperature of side runner 7 is handed over the end, the crisscross part of accuse flow mechanism and 4 output 6 of sprue increases, thereby make 4 output 6 openings of sprue less, the speed that the material flowed this moment is lower, because the speed that the material flowed is less, in time the inside temperature of side runner 7 is handed over the end and also can have sufficient time to heat the material, thereby be unlikely to influence the effect of moulding plastics, can adjust the velocity of flow of material according to the temperature of side runner 7 in the in-service use process, thereby improve the effect of moulding plastics.
Embodiment 3, as shown in fig. 2 to 4 and fig. 6 to 11, the flow control mechanism includes a first accommodating chamber 9 and a second accommodating chamber 10, the first accommodating chamber 9 is disposed at the bottom of the second accommodating chamber 10, a support rod 11 is fixedly connected between the first accommodating chamber 9 and the second accommodating chamber 10, a partition 12 is disposed at the top of the first accommodating chamber 9, a through slot 13 is disposed on the partition 12, a port 14 is disposed on the first accommodating chamber 9, a sealing cloth 15 is disposed at the top of the first accommodating chamber 9, the sealing cloth 15 is made of rubber material, the sealing cloth 15 is disposed at the port 14, a support plate 16 is disposed between the sealing cloth 15 and the partition 12, the support plate 16 is fixedly connected with the inner wall of the first accommodating chamber 9, a connecting plate 17 is disposed at the center of the sealing cloth 15 and is fixed with the connecting plate 17, a slide rod 18 is fixedly connected at the bottom of the connecting plate 17, the sliding rod 18 penetrates through the first accommodating chamber 9 and the second accommodating chamber 10 and extends into the second accommodating chamber 10, a piston 19 is connected inside the second accommodating chamber 10 in a sliding mode, an annular air bag 20 is arranged at the top of the piston 19, spring seats are arranged on the opposite sides of the bottoms of the piston 19 and the second accommodating chamber 10, a spring 21 is arranged between the two spring seats, a fixing rod 22 is fixedly connected to the bottom of the second accommodating chamber 10, and nuts are fixedly connected to the bottoms of the fixing rod 22.
Further, a storage chamber 23 is arranged in the second accommodating chamber 10 inside the upper die 1, a heat conducting strip 24 is arranged inside the storage chamber 23, the heat conducting strip 24 is annular, a cylindrical groove is formed in the top of the storage chamber 23, a conductive joint 25 is arranged at the top of the heat conducting strip 24, the conductive joint 25 is electrically connected with the heating coil 8 inside the secondary flow channel 7, the heat conducting strip 24 is arranged outside the second accommodating chamber 10, and the cylindrical groove is formed around the outer side of the first accommodating chamber 9.
When the heating coil is electrified and heated, the conductive connector 25 connected with the heating coil is electrified to heat the heat conducting strip 24, when the heat conducting strip 24 is heated, the annular air bag 20 in the second accommodating chamber 10 is heated and expanded to cause the volume of the annular air bag 20 to increase, the annular air bag 20 is filled with hydrogen cyanide gas, when the temperature is higher than 25 degrees, the hydrogen cyanide gas is converted into gas from liquid, the volume of the annular air bag 20 can be increased, similarly, when the temperature is lower than 25 degrees, the hydrogen cyanide gas is converted from gas into liquid to reduce the volume of the annular air bag 20, when the volume of the annular air bag 20 is increased, the piston 19 can be driven to move downwards, the sliding rod 18 is driven to move downwards by the piston 19, and the sealing cloth 15 is connected between the connecting plate 17 and the first accommodating chamber 9, so that when the sliding rod 18 moves downwards, the connecting plate 17 can be driven to be communicated with the sealing cloth 15 on the outer side of the connecting plate 17 to move downwards to a port at the top of the first accommodating chamber 9 14, at this time, the sealing cloth 15 is wholly in a horizontal state, the output end 6 at the bottom of the main flow passage 4 is at the maximum, the speed of the material reaching the secondary flow passage 7 through the main flow passage 4 is also at the maximum, at this time, the temperature inside the secondary flow passage 7 is higher, the material can be heated at a higher flow speed, and the heating effect is good, wherein a support plate 16 is arranged inside a port 14 of the first accommodating chamber 9, the support plate can support the sealing cloth 15, the sealing cloth 15 is prevented from being bent downwards under the weight of the material, when the temperature inside the secondary flow passage 7 is lower, the heat transferred to a large heat sheet through a heating coil is reduced, so that the temperature inside the second accommodating chamber 10 is reduced, the volume of the annular air bag 20 is reduced, at this time, the piston 19 can be driven to move upwards under the acting force of the spring 21, so as to drive the slide rod 18 to move upwards, the slide rod 18 drives the connecting plate 17 and the sealing cloth 15 outside the connecting plate to move upwards, at this moment, the sealing cloth 15 can form a circular truncated cone shape, when the connecting plate 17 drives the top end of the sealing cloth 15 to move to the output end 6 of the main flow channel 4, a flow guide channel is formed between the main flow channel 4 and the sealing cloth 15 for material circulation, the connecting plate 17 and the sealing cloth 15 on the outer side of the connecting plate are continuously driven to move upwards along with the slide rod 18, so that the channel is continuously reduced, the rate of material passing through is reduced, the rate of material flowing inside the secondary flow channel 7 is reduced, although the temperature of the secondary flow channel 7 is lower at this moment, the flow rate of the material is correspondingly reduced, the secondary flow channel 7 can still effectively heat the material, and the good injection molding effect is guaranteed.
In embodiment 4, as shown in fig. 6 to 11, the upper die 1 is provided with exhaust passages 26 at both the front and rear sides, one end of each exhaust passage 26 is communicated with the first accommodating chamber 9, the other end of each exhaust passage 26 is provided with a sealing bolt 27, the sealing bolt 27 is in threaded connection with the upper die 1, the top of each exhaust passage 26 is provided with a measuring passage 28, a measuring rod 29 is arranged inside the measuring passage 28, the measuring rod 29 is slidably connected inside the measuring passage 28, and the outer side of the measuring rod 29 is provided with scale marks.
When the sealing cloth 15 is driven by the sliding rod 18 to ascend or descend the connecting plate 17 and the sealing cloth 15 outside the connecting plate, the sealing cloth 15 can be enabled to be expanded or contracted, when the sealing cloth 15 is expanded, the space between the sealing cloth 15 and the partition plate 12 is increased, so that negative pressure is formed between the sealing cloth 15 and the partition plate 12, the partition plate 12 is provided with the through groove 13 which penetrates through the partition plate, therefore, negative pressure is formed inside the first accommodating chamber 9, the exhaust channel 26 is communicated with the first accommodating chamber 9, therefore, the measuring channel 28 is communicated with the exhaust channel 26, so that the measuring rod 29 can be driven to move upwards under the action of external pressure, and similarly, when the sealing cloth 15 is driven by the sliding rod 18 to move downwards to the horizontal position, air between the sealing cloth 15 and the partition plate 12 can be discharged to the inside of the first accommodating chamber 9, and then flows to the inside the measuring channel 28 through the exhaust channel 26, the mechanism is favorable for driving the measuring rod 29 to move upwards, the state of the sealing cloth 15 at the moment can be seen through the scale marks on the measuring rod 29, so that the size of the flow guide channel at the moment is obtained, the heating coil 8 in the auxiliary flow channel 7 can be better controlled, the temperature in the auxiliary flow channel 7 can be better controlled, and the injection molding effect of the material can be improved.
The working principle is as follows: when the heating coil is electrified for heating, the conductive connector 25 connected with the heating coil is electrified so as to heat the heat conducting strip 24, when the heat conducting strip 24 is heated, the annular air bag 20 inside the second accommodating chamber 10 is heated to expand, so that the volume of the annular air bag 20 is increased, at the moment, the volume of the annular air bag 20 is increased, the piston 19 can be driven to move downwards, so that the slide rod 18 is driven to move downwards through the piston 19, the sealing cloth 15 is connected between the connecting plate 17 and the first accommodating chamber 9, so that when the slide rod 18 moves downwards, the connecting plate 17 can be driven to be communicated with the sealing cloth 15 on the outer side of the connecting plate 17 to move downwards to the port 14 at the top of the first accommodating chamber 9, at the moment, the whole sealing cloth 15 is in a horizontal state, the output end 6 at the bottom of the main flow passage 4 reaches the maximum, the speed of the material reaching the auxiliary flow passage 7 through the main flow passage 4 also reaches the maximum, and at the moment, the temperature inside the auxiliary flow passage 7 is higher, the material with high flow speed can be heated, the heating effect is good, when the temperature in the secondary flow passage 7 is low, the heat transferred to the large hot plate through the heating coil is reduced, so that the temperature in the second accommodating chamber 10 is reduced, the volume of the annular air bag 20 is reduced, the piston 19 can be driven to move upwards under the action of the spring 21, so as to drive the slide rod 18 to move upwards, the slide rod 18 moves upwards to drive the connecting plate 17 and the sealing cloth 15 outside the connecting plate 17 to move upwards, at the moment, the sealing cloth 15 forms a circular table shape, when the connecting plate 17 drives the top end of the sealing cloth 15 to move to the output end 6 of the main flow passage 4, a flow guide passage is formed between the main flow passage 4 and the sealing cloth 15 for material circulation, the flow guide passage is reduced continuously along with the slide rod 18 driving the connecting plate 17 and the sealing cloth 15 outside the connecting plate to move upwards, at the moment, the material passage speed is reduced continuously, the flow rate of the material in the secondary runner 7 is low, and although the temperature of the secondary runner 7 is low, the flow rate of the material is correspondingly reduced, so that the secondary runner 7 can still effectively heat the material, and a good injection molding effect is ensured.
Claims (9)
1. The utility model provides an effectual mould moulds plastics, includes mould and lower mould, goes up the inside top of mould and is provided with the sprue, and sprue bottom intercommunication has vice runner, all is provided with heating element, its characterized in that on sprue and the side runner inner wall: the utility model discloses a seal structure, including the sprue, the sprue bottom sets up to the output, go up mould inside and be located side sprue bottom and be provided with the accuse mechanism that flows of control sprue output end opening size, accuse mechanism is including setting up in the sealed cloth of sprue bottom, forms the water conservancy diversion passageway between the output of sealed cloth and sprue, opens through sealed cloth or shrink and adjust the size of water conservancy diversion passageway, when side sprue temperature is higher than the threshold value, sealed cloth shrink, when side sprue temperature is less than the threshold value, sealed cloth expansion.
2. The mold with good injection molding effect according to claim 1, characterized in that: the top end of the main runner is set as an input end, one side of the upper die, which is opposite to the lower die, is provided with an injection molding cavity, and the auxiliary runner is arranged at the top of the injection molding cavity and communicated with the injection molding cavity.
3. The mold with good injection molding effect according to claim 1, characterized in that: the heating element is set as a heating coil, and the flow control mechanism is electrically connected with the heating coil on the inner wall of the secondary flow channel.
4. The mold with good injection molding effect according to claim 3, characterized in that: the flow control mechanism further comprises a first containing cavity and a second containing cavity, the first containing cavity is arranged at the bottom of the second containing cavity, and a supporting rod is fixedly connected between the first containing cavity and the second containing cavity.
5. The mold with good injection molding effect according to claim 4, wherein: the top of the first accommodating cavity is provided with a partition plate, the partition plate is provided with a through groove in a penetrating mode, a port is formed in the first accommodating cavity, and the sealing cloth is arranged at the port at the top of the first accommodating cavity.
6. The mold with good injection molding effect according to claim 5, characterized in that: the sealing cloth is characterized in that a supporting plate is arranged between the sealing cloth and the partition plate, the supporting plate is fixedly connected with the inner wall of the first containing cavity, a connecting plate is fixedly arranged at the center of the sealing cloth, a sliding rod is fixedly connected to the bottom of the connecting plate, and the sliding rod penetrates through the first containing cavity and the second containing cavity and extends to the inside of the second containing cavity.
7. The mold with good injection molding effect according to claim 4, wherein: the piston is connected to the inside of the second accommodating chamber in a sliding mode, the annular air bag is arranged at the top of the piston, spring seats are arranged on the piston and one side, opposite to the bottom of the second accommodating chamber, of the piston, and springs are connected between the two spring seats.
8. The mold with good injection molding effect according to claim 4, wherein: the inner part of the upper die is provided with a storage chamber, the storage chamber is arranged at the bottom end of the second accommodating cavity, a heat conducting strip is arranged in the storage chamber and is annular, a cylindrical groove is formed in the top of the storage chamber, a conductive connector is arranged at the top of the heat conducting strip, and the conductive connector is electrically connected with a heating coil in the secondary flow channel.
9. The mold with good injection molding effect according to claim 4, wherein: the utility model discloses an air exhaust device, including last mould, first holding cavity, exhaust passage, sealing bolt, measuring rod sliding connection, the last mould front and back both sides all are provided with exhaust passage, exhaust passage one end is linked together with first holding cavity, the exhaust passage other end is provided with sealing bolt, sealing bolt and last mould threaded connection, and exhaust passage's top intercommunication is provided with measuring channel, and the inside measuring rod that is provided with of measuring channel, measuring rod sliding connection are inside measuring channel, and the measuring rod outside is provided with the scale mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111018697.1A CN113681834A (en) | 2021-09-01 | 2021-09-01 | Effectual mould moulds plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111018697.1A CN113681834A (en) | 2021-09-01 | 2021-09-01 | Effectual mould moulds plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113681834A true CN113681834A (en) | 2021-11-23 |
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ID=78584667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111018697.1A Withdrawn CN113681834A (en) | 2021-09-01 | 2021-09-01 | Effectual mould moulds plastics |
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| Country | Link |
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| CN (1) | CN113681834A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157566A (en) * | 2022-07-25 | 2022-10-11 | 高莹 | Environment-friendly plastic injection mold convenient to adjust |
-
2021
- 2021-09-01 CN CN202111018697.1A patent/CN113681834A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157566A (en) * | 2022-07-25 | 2022-10-11 | 高莹 | Environment-friendly plastic injection mold convenient to adjust |
| CN115157566B (en) * | 2022-07-25 | 2023-09-12 | 苏州史克塞斯模具科技有限公司 | Environment-friendly plastic injection mold convenient to adjust |
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Application publication date: 20211123 |