CN118205150A - Melt conveying mechanism and resin online modification molding equipment - Google Patents
Melt conveying mechanism and resin online modification molding equipment Download PDFInfo
- Publication number
- CN118205150A CN118205150A CN202410377068.5A CN202410377068A CN118205150A CN 118205150 A CN118205150 A CN 118205150A CN 202410377068 A CN202410377068 A CN 202410377068A CN 118205150 A CN118205150 A CN 118205150A
- Authority
- CN
- China
- Prior art keywords
- cavity
- melt
- valve
- conveying mechanism
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 33
- 239000011347 resin Substances 0.000 title claims abstract description 26
- 229920005989 resin Polymers 0.000 title claims abstract description 26
- 230000004048 modification Effects 0.000 title claims abstract description 19
- 238000012986 modification Methods 0.000 title claims abstract description 19
- 238000000465 moulding Methods 0.000 title claims description 20
- 239000000155 melt Substances 0.000 claims abstract description 73
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000003860 storage Methods 0.000 claims description 39
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000002407 reforming Methods 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 11
- 239000004033 plastic Substances 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 11
- 230000009471 action Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010137 moulding (plastic) Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 229920001431 Long-fiber-reinforced thermoplastic Polymers 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The application discloses a melt conveying mechanism and resin on-line modification forming equipment, which belongs to the field of plastic forming processing, and comprises a cavity and a seal pin which is partially or completely arranged in the cavity and is movably arranged relative to the cavity, wherein the outer diameter of the seal pin is smaller than the inner diameter of the cavity, a feed port and a discharge port are also arranged on the cavity, and the position of the feed port is arranged so that the outer diameter of the seal pin is always smaller than the inner diameter of the cavity corresponding to the section position of the seal pin in the moving process.
Description
Technical Field
The application belongs to the field of plastic molding processing, and particularly relates to a melt conveying mechanism and resin on-line modification molding equipment.
Background
Resin modification means that the properties of the resin are changed by physical or chemical means, so that the performance of the resin is improved or new performance is given to the resin, and the modified resin may be improved in terms of processability, heat resistance, corrosion resistance, mechanical properties and the like. The molding processing after the resin modification mainly comprises injection molding, extrusion, blow molding and the like. Based on the improvement of LFT-D (long fiber reinforced thermoplastic composite direct molding process) technology in the prior art, an online resin modification molding device is provided, which is provided with an extruder, a molding machine and a melt conveying system, and can continuously carry out plastic modification and molding processes, so that the quality and performance of plastic products are improved, and the continuous modification and molding of thermoplastic plastics with higher melting point and faster cold crystallization rate can be realized, thereby improving the production efficiency and expanding the application range of the online molding technology.
However, prior art melts are prone to stock due to structural design during entry into the melt delivery system after extrusion. Specifically, as shown in fig. 1, when the melt is in a connecting section between the extruder and the buffer cylinder and is located at the rear section of the discharge hole of the buffer cylinder, after the buffer cylinder is compressed to the minimum volume, the material is stored, and when the viscosity of the melt is larger, part or all of the melt is always located near the piston, namely is farthest from the discharge hole, and when the buffer cylinder is compressed to the minimum volume next time, part or all of the specific material is still located at the rear section of the discharge hole of the buffer cylinder, in the continuous production process, the performance of the specific material is easily distinguished from the melt flowing out of the extruder due to multiple circulation, and when part or all of the specific material is mixed into the normal melt, the melt is easily uneven, and the product quality problem is caused.
Disclosure of Invention
In order to solve the problem of material storage at the rear section of a discharge hole of a buffer cylinder of a melt conveying mechanism in the prior art, the application aims to provide the melt conveying mechanism which has a simple structure and can improve the problem of material storage, and the melt conveying mechanism is realized by the following technical scheme:
the utility model provides a fuse-element conveying mechanism, includes cavity and some or all locate the cavity in with the cavity seal needle of the relative activity setting of cavity, seal the external diameter of some or all of needle is less than the internal diameter of cavity, still be equipped with feed inlet and discharge gate on the cavity, the position that the feed inlet set up can make seal the needle and seal the needle external diameter and be less than the cavity internal diameter that its cross-section position corresponds all the time in the activity in-process.
Optionally, when the seal needle moves to minimize the volume of the cavity, a gap exists between the seal needle and the discharge hole.
Optionally, the seal needle is directly or indirectly fixed with the cavity through a jacket.
Optionally, a flash port communicated with the outside of the cavity is arranged on the jacket.
Optionally, the jacket is fixed on the cavity by a pressure plate.
Optionally, the jacket end position corresponds to the feed inlet and is used for flushing away the melt which is positioned between the seal pin and the cavity and is positioned at the jacket end position, so as to prevent stock.
Optionally, the length of the jacket end at the needle sealing side is smaller than the length at the cavity side.
Optionally, the seal pin is fixedly connected with the hydraulic cylinder through a fixed chuck.
Optionally, the seal needle moves along the cavity to change the volume of the cavity.
Optionally, the front end of the seal needle in the cavity is cone-shaped.
The application also provides resin on-line modification forming equipment, which comprises the melt conveying mechanism according to any technical scheme, a modification system, a storage and injection system, a die and a melt reversing device, wherein the modification system comprises a screw extruder, and the storage and injection system comprises a nozzle, a storage cylinder, an injection cylinder and an injection piston.
Optionally, the melt reversing device comprises a valve body, a valve seat, a valve port and a valve core, wherein the valve seat is provided with a through hole which penetrates through the valve body, and the through hole is communicated with the valve port.
Optionally, the valve port is communicated with the discharge port.
Optionally, the valve port is matched with the valve core through the through hole to control the opening and closing of the valve port.
Optionally, the valve port is matched with the end face of the valve core, and when the valve core passes through the through hole to be attached to the valve port, the melt of the through hole is stopped from flowing into the cavity.
Optionally, the outer diameter of the valve core is smaller than the diameter of the through hole.
Optionally, the valve core is a valve needle, the valve needle is fixedly connected with the hydraulic cylinder, and the movement of the valve needle is controlled through the hydraulic cylinder.
Optionally, the melt reversing device is respectively connected with the storage system, the nozzle and the melt conveying mechanism.
Optionally, the storage cylinder is provided with a storage overflow port.
Optionally, the height of the storage cylinder from the ground is smaller than the height of the extruder from the ground, and the storage cylinder and the extruder are distributed in parallel.
The melt conveying mechanism and the resin on-line modification forming equipment have the working principle that: the resin and the auxiliary agent are mixed, extruded by an extruder, enter a melt conveying mechanism, and flow through a feed inlet to enter the cavity. In the material storage process, the seal pin is pushed forward under the action of the oil cylinder, the volume of the cavity is reduced to a minimum value, the valve core of the melt reversing device is loosened, the cavity is communicated with the material storage cylinder through the valve port, the melt enters the material storage cylinder after flowing through the through hole through the cavity, the nozzle direction depends on the mold and is reserved for sealing, and the melt cannot flow to the nozzle direction. After the storage is finished, the injection process is carried out, the sealing needle loosens and withdraws under the action of the oil cylinder, the volume of the cavity is increased, the valve core penetrates through the through hole to be attached to the valve port, the cavity is not communicated with the storage cylinder, the melt from the extruder enters the cavity for temporary storage, the buffer storage function is achieved, and when the volume of the cavity reaches the maximum value before the injection is finished, the redundant melt flows out through the flash port. Meanwhile, the injection cylinder is started to inject the melt, and the valve core is tightly attached to the valve port, so that the melt cannot flow back into the cavity, and when the equipment starts to work for the next round, the sealing plays a role in promoting the flow of the melt, so that the problem of stock cannot be generated in the conveying process of the melt. In addition, the space structure of the extruder with the height higher than that of the storage cylinder is beneficial to the flow of melt under the action of gravity, and the problem of material storage is improved.
Compared with the prior art, the application has the following beneficial effects: the melt reduces the dead angle of the channel in the conveying process, improves the stock phenomenon, improves the plastic molding quality, and simultaneously takes the cavity as a buffer structure, so that the buffer cylinder structure is not required to be independently arranged, the structure is simple, and the cost is saved.
Drawings
FIG. 1 is a prior art as described in the background;
FIG. 2 is a schematic view of a melt conveying mechanism according to example 1;
FIG. 3 is a schematic cross-sectional view of the melt conveying mechanism of example 1;
FIG. 4 is a schematic diagram of the seal needle according to embodiment 1;
FIG. 5 is a schematic view of an on-line resin modifying and molding apparatus according to example 2;
FIG. 6 is a schematic diagram of a storage and injection system according to embodiment 2;
FIG. 7 is a schematic cross-sectional view of the injection system according to embodiment 2;
FIG. 8 is a schematic view of a melt direction changing apparatus according to example 2;
FIG. 9 is a schematic cross-sectional view of a melt-switching device according to example 2.
In the drawings, reference numerals are: 1-melt conveying mechanism, 101-cavity, 102-seal pin 103-feed inlet, 104-discharge outlet, 105-jacket, 106-pressure disk, 107-fixed chuck, 108-flash port, 2-melt reversing device, 201-valve body, 202-valve seat, 203-valve port, 204-valve core, 205-through hole, 3-injection system, 301-nozzle, 302-storage cylinder, 303-storage flash port, 304-injection cylinder, 305-injection piston, 4-extruder, 5-hydraulic cylinder, 6-die.
Detailed Description
The following examples are provided to illustrate the embodiments of the present application in detail, but the embodiments of the present application are not to be construed as limiting the technical solutions of the present application, and any insubstantial changes such as replacement of common technical solutions in the art by using the technical solutions described in the examples of the present application are included in the scope of the present application.
The hydraulic cylinder 5 in the present application includes a cylinder, etc. power assembly or power mechanism, as will be appreciated by those skilled in the art.
Examples
The melt conveying mechanism 1 as shown in fig. 2-4 comprises a cavity 101 and a seal needle 102 which is partially or completely arranged in the cavity 101 and is movably arranged relative to the cavity 101, wherein the outer diameter of part or all of the seal needle 102 is smaller than the inner diameter of the cavity 101, a feed port 103 and a discharge port 104 are further arranged on the cavity 101, the position of the feed port 103 is arranged so that the outer diameter of the seal needle 102 is always smaller than the inner diameter of the cavity 101 corresponding to the section position of the seal needle 102 in the moving process, and a space formed between the seal needle 102 and the cavity 101 is used for melt circulation.
In this embodiment, when the seal pin 102 moves to minimize the volume of the cavity 101, a gap exists between the seal pin 102 and the discharge port 104, i.e., a minimum distance between the seal pin 102 and the discharge port 104, and a gap exists between the seal pin and the discharge port 104, through which the melt can flow through the discharge port 104.
In this embodiment, the seal needle 102 is directly or indirectly fixed to the cavity 101 through the jacket 105, and the jacket 105 does not leak materials, so that the service life of the seal needle 102 is prolonged, and the cost is not increased due to frequent cleaning and replacement of components.
In this embodiment, the jacket 105 is provided with a flash port 108 communicating with the outside of the cavity 101, when the cavity 101 has a buffering function, and when the volume of the cavity 101 reaches a maximum and the melt is full, the melt still enters the cavity 101 through the feed port 103, and the excessive melt can flow out through the flash port 108, so that no excessive mechanical action is generated, the excessive pressure of the equipment is prevented, and in other embodiments, the flash port 108 can also be arranged on the cavity 101.
In this embodiment, the jacket 105 is secured to the cavity 101 by a platen 106.
In this embodiment, the end position of the jacket 105 corresponds to the feed port 103 for flushing away the melt located between the seal pin 102 and the cavity 101 and at the end position of the jacket 105, preventing stock.
In this embodiment, the length of the end of the jacket 105 on the side of the seal needle 102 is smaller than the length on the side of the cavity 101, which has an effect of promoting the cleaning of the stock in the cavity 101.
In this embodiment, the seal needle 102 is fixedly connected with the hydraulic cylinder 5 through the fixed chuck 107, and in other embodiments, other power mechanisms can be selected to realize the operation of the seal needle 102.
In this embodiment, the movement of the seal needle 102 along the cavity 101 effects a change in the volume of the cavity 101.
In this embodiment, the front end of the seal pin 102 located in the cavity 101 is tapered, so that the melt can circulate conveniently, and the melt has a small influence on the flow rate of the melt when flowing through the end of the seal pin 102, so that the influence on the melt component can be reduced.
Examples
The online resin modification and molding equipment shown in fig. 5-9 comprises the melt conveying mechanism 1 of the embodiment 1, a modification system, a storage and injection system 3, a mold 6 and a melt reversing device 2, wherein the modification system comprises a screw extruder 4, and the storage and injection system 3 comprises a nozzle 301, a storage cylinder 302, an injection cylinder 304 and an injection piston 305.
In this embodiment, the melt reversing device 2 includes a valve body 201, a valve body 202, a valve body 203, and a valve core 204, where the valve body 202 is provided with a through hole 205, the through hole 205 is in communication with the valve body 203, and the melt circulates between the valve body 203 and the through hole 205 through the mutual cooperation of the valve body 203 and the valve core 204, and in other embodiments, the melt reversing device 2 may also use other valves or structures, as long as the effect of isolating the melt buffered in the melt conveying mechanism 1 from the melt in the injection process can be achieved.
In this embodiment, the valve body 203 communicates with the discharge port 104 and during the storage phase, the melt flows into the storage system through the cavity 101.
In this embodiment, the valve body 203 and the valve core 204 cooperate via the through hole 205 to control the opening and closing of the valve body 203, thereby functioning as a device for reversing the melt.
In this embodiment, the valve body 203 is fitted to the end face of the valve body 204, and the melt that closes the through hole 205 flows into the cavity 101 when the valve body 204 passes through the through hole 205 and is fitted to the valve body 203.
In this embodiment, the outer diameter of the spool 204 is smaller than the diameter of the through-hole 205, and the melt in the accumulator 302 is not hindered from flowing into the nozzle 301 through the through-hole 205 when the spool 204 is in contact with the valve body 203.
In the present embodiment, the valve element 204 is a valve needle, and the valve needle is fixedly connected with the hydraulic cylinder 5, and the hydraulic cylinder 5 controls the movement of the valve needle, so that other power devices can be selected in other embodiments.
In this embodiment, the melt diverting device 2 is connected to the storage system, the nozzle 301, and the melt conveying mechanism 1, respectively.
In this embodiment, the storage cylinder 302 is provided with a storage overflow port 303, and during the storage process, excess melt is discharged, preventing the storage pressure from being excessively large.
In this embodiment, the height of the storage cylinder 302 from the ground is smaller than the height of the extruder 4 from the ground, the storage cylinder 302 and the extruder 4 are distributed in parallel, and the melt flow is promoted by the arrangement of the spatial structure, so that no storage in the equipment is promoted.
The power structure, the heating and heat preserving system, the cooling system, the product ejection system and the like which should be further included in the mold 6 in this embodiment are all realized by experience of a person skilled in the art, and are not subject to the gist of the present application, and are not repeated.
Claims (20)
1. The utility model provides a fuse-element conveying mechanism, its characterized in that includes cavity and some or all locate the cavity in with the cavity relative activity seal needle that sets up, the external diameter of some or all of seal needle is less than the internal diameter of cavity, still be equipped with feed inlet and discharge gate on the cavity, the position that the feed inlet set up can make seal needle external diameter be less than the cavity internal diameter that its cross-section position corresponds all the time in the activity in-process.
2. The melt delivery mechanism of claim 1, wherein the needle is moved to minimize cavity volume with a gap between the needle and the discharge port.
3. The melt conveying mechanism of claim 1, wherein the pins are secured to the cavity directly or indirectly through a jacket.
4. A melt conveying mechanism according to claim 3, wherein the jacket is provided with a flash communicating with the outside of the cavity.
5. A melt conveying mechanism as claimed in claim 3 wherein the jacket is secured to the cavity by a platen.
6. A melt conveying mechanism according to claim 3, wherein the jacket end position corresponds to a feed port for flushing away melt located between the seal pin and the cavity at the jacket end position to prevent stock.
7. A melt conveying mechanism according to claim 3, wherein the jacket end has a length on the needle sealing side that is less than a length on the cavity side.
8. The melt conveying mechanism of claim 1, wherein the seal pin is fixedly connected to the hydraulic cylinder by a fixed chuck.
9. The melt delivery mechanism of claim 1, wherein movement of the seal pin along the cavity effects a change in volume size of the cavity.
10. The melt conveying mechanism of claim 1, wherein the front end of the pin in the cavity is tapered.
11. The resin online modification molding device is characterized by comprising the melt conveying mechanism according to any one of claims 1-10, and further comprising a modification system, a storage and injection system, a mold and a melt reversing device, wherein the modification system comprises a screw extruder, and the storage and injection system comprises a nozzle, a storage cylinder, an injection cylinder and an injection piston.
12. The resin on-line modifying and forming device according to claim 11, wherein the melt reversing device comprises a valve body, a valve seat, a valve port and a valve core, the valve seat is provided with a through hole which penetrates, and the through hole is communicated with the valve port.
13. The resin on-line modifying and shaping apparatus of claim 12, wherein the valve port communicates with the outlet port.
14. The resin on-line modifying and molding device of claim 12, wherein the valve port is engaged with the valve core via the through-hole to control opening and closing of the valve port.
15. The resin on-line modifying and molding device of claim 12, wherein the valve port is adapted to an end face of the valve core, and the valve core closes the melt flow into the cavity through the through hole when the through hole is attached to the valve port.
16. The resin on-line reforming and molding apparatus as defined in claim 12, wherein the outer diameter of the valve core is smaller than the diameter of the through hole.
17. The resin on-line modifying and molding device of claim 12, wherein the valve element is a valve needle, the valve needle is fixedly connected with a hydraulic cylinder, and the movement of the valve needle is controlled by the hydraulic cylinder.
18. The resin on-line modifying and molding device of claim 11, wherein the melt reversing device is respectively connected with the storage system, the nozzle and the melt conveying mechanism.
19. The resin on-line modifying and molding apparatus of claim 11, wherein the accumulator is provided with an accumulator flash.
20. The resin on-line modifying and molding apparatus of claim 11, wherein the accumulator is less than the extruder from the ground, the accumulator being parallel to the extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410377068.5A CN118205150A (en) | 2024-03-29 | 2024-03-29 | Melt conveying mechanism and resin online modification molding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410377068.5A CN118205150A (en) | 2024-03-29 | 2024-03-29 | Melt conveying mechanism and resin online modification molding equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118205150A true CN118205150A (en) | 2024-06-18 |
Family
ID=91448765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410377068.5A Pending CN118205150A (en) | 2024-03-29 | 2024-03-29 | Melt conveying mechanism and resin online modification molding equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118205150A (en) |
-
2024
- 2024-03-29 CN CN202410377068.5A patent/CN118205150A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10315347B2 (en) | Injection molding apparatus with spherical rotor | |
| KR102005014B1 (en) | Pre-compression injection machine | |
| KR20180011708A (en) | Double extruder type injection machine having different rotating speeds | |
| US11241810B2 (en) | Molding machine | |
| US20130112782A1 (en) | Injection assembly | |
| EP1940601B1 (en) | Moulding method and apparatus | |
| CN211416152U (en) | Squeezing and injecting integrated full-automatic embryo injecting machine | |
| CN118205150A (en) | Melt conveying mechanism and resin online modification molding equipment | |
| CN117324584A (en) | Precise die-casting die for filter shell and forming process | |
| CN110774550A (en) | Squeezing and injecting integrated full-automatic embryo injecting machine | |
| KR102005001B1 (en) | Injection machine | |
| CN115256786A (en) | Composite material extrusion injection molding integrated forming injection device and working method thereof | |
| CN215151556U (en) | Injection molding machine with high injection molding efficiency | |
| CN214395271U (en) | Injection mechanism of rubber injection molding machine | |
| CN212123935U (en) | Resin online modification and forming equipment | |
| CN101945747B (en) | Compression injection moulding method and device for preforms | |
| CN212860278U (en) | Mould injection device | |
| CN210283127U (en) | Melting and glue injection integrated structure | |
| CN201848982U (en) | Injection device of screw injection molding machine | |
| CN219947150U (en) | Injection molding equipment | |
| CN105751455A (en) | Spiral coil and plunger combined type injection molding device | |
| CN220784773U (en) | Injection table mechanism of double-stage injection molding machine | |
| CN212949011U (en) | Check valve structure of injection molding machine | |
| CN212707856U (en) | Rubber injection molding machine | |
| CN112536995B (en) | Mould advances mucilage binding and puts for work piece production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication |