CN218314993U - Glue leakage prevention structure of hot runner system - Google Patents
Glue leakage prevention structure of hot runner system Download PDFInfo
- Publication number
- CN218314993U CN218314993U CN202222220043.3U CN202222220043U CN218314993U CN 218314993 U CN218314993 U CN 218314993U CN 202222220043 U CN202222220043 U CN 202222220043U CN 218314993 U CN218314993 U CN 218314993U
- Authority
- CN
- China
- Prior art keywords
- hot
- flow distribution
- distribution plate
- plate
- leakage
- 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.)
- Active
Links
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a hot runner system leak protection glued structure belongs to injection mold technical field, and it includes hot runner plate, flow distribution plate, hot mouth, the flow distribution plate sets up in the hot runner plate, has the subchannel in the flow distribution plate, hot mouth sets up in the flow distribution plate below, and the bottom surface of flow distribution plate is hugged closely to the top surface of hot mouth, hot mouth have with the hot gluey way of flow distribution channel intercommunication, its characterized in that: the anti-leakage sleeve is arranged at the joint of the splitter plate and the hot nozzle, the anti-leakage sleeve is fixedly connected below the splitter plate, a through hole coaxial with the hot nozzle is formed in the center of the anti-leakage sleeve, and the upper portion of the hot nozzle is embedded in the through hole and is in clearance fit with the through hole. The utility model discloses a set up the leak protection cover, the plastic interception that will overflow from the junction of flow distribution plate and hot mouth is in the leak protection cover to avoid because of the leaking gluey problem that flow distribution plate thermal energy or hot mouth sealing washer damage and lead to.
Description
Technical Field
The utility model relates to a hot runner system leak protection glued structure, especially a syringe forming die's hot runner system leak protection glued structure belong to injection mold technical field.
Background
The hot runner mold is mainly used for producing plastic products, the melt in the runner is not solidified all the time by utilizing the heating device, compared with the traditional mold, the hot runner mold has the advantages of short forming period, more raw material saving, production efficiency improvement, product quality improvement and product follow-up procedures simplification, so the hot runner mold is widely applied in all countries and regions in the world at present. The main working process of the hot runner mold when being used for injection molding products is as follows: firstly, injecting a molten plastic raw material into a main runner arranged in a hot runner mold from an injection molding machine, enabling the molten plastic raw material to flow through a sub-runner and then to a hot nozzle, then injecting the molten plastic raw material into a mold cavity through the hot nozzle, and finally molding a plastic product.
In the existing hot runner mold, an aluminum or copper sealing ring is arranged between a hot nozzle and a flow distribution plate, then the hot nozzle is pressed on the bottom surface of the flow distribution plate through the assembly between templates, and the hot nozzle and the flow distribution plate are completely sealed under the extrusion deformation of the sealing ring. However, in the structure, the hot nozzle is in plane contact with the flow distribution plate, the flow distribution plate is not connected in an embedded mode, the flow distribution plate can expand towards all directions after being heated, dislocation can be generated between the flow distribution plate and the hot nozzle after expansion, glue leakage can be caused, and the sealing ring can be worn and aged after long-term use and can also be caused to glue leakage. The overflow of molten plastic from between the splitter plate and the hot nozzle can cause equipment failure, affect product quality and production schedule, generate high maintenance cost, and even cause the whole hot runner system to be scrapped.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome above-mentioned problem, and provide a hot runner system leak protection glued structure, can reduce the hourglass gluey problem that leads to because of flow distribution plate thermal energy or hot mouth sealing washer damage.
The technical scheme of the utility model is that:
the utility model provides a hot runner system leak protection glued structure, includes hot runner plate, flow distribution plate, hot mouth, the flow distribution plate sets up in hot runner plate, has the subchannel in the flow distribution plate, hot mouth sets up in the flow distribution plate below, and the bottom surface of flow distribution plate is hugged closely to hot mouth's top surface, hot mouth have with the hot gluey way of subchannel intercommunication, its characterized in that: the junction of flow distribution plate and hot mouth is equipped with the leak protection cover, leak protection cover fixed connection is in the flow distribution plate below, and the center of leak protection cover has the through-hole coaxial with hot mouth, and the upper portion nestification of hot mouth is in the through-hole to with through-hole clearance fit. The upper part of the hot nozzle is embedded in the leakage-proof sleeve in a clearance type, the leakage-proof sleeve is fixed below the flow distribution plate and can move along with the heat expansion of the flow distribution plate, and therefore, even if plastic overflows from the joint of the flow distribution plate and the hot nozzle, the plastic can be retained in the leakage-proof sleeve, so that the purpose of preventing the leakage of the plastic is achieved, and the equipment is prevented from being broken down or scrapped.
Furthermore, the through hole is a step hole and comprises a large-diameter hole section close to the splitter plate and a small-diameter hole section far away from the splitter plate, the small-diameter hole section is in clearance fit with the outer wall of the hot nozzle, the upper end of the hot nozzle extends radially to form an annular edge, and the annular edge is in clearance fit with the large-diameter hole section. The structure of the step hole is more favorable for preventing glue leakage.
Furthermore, in the hot runner system glue leakage prevention structure, an annular groove is formed in the bottom surface of the flow distribution plate, and a leakage prevention sleeve is embedded in the annular groove and is fixedly connected with the flow distribution plate through a bolt. Set up the ring channel, the leak protection cover location installation of being convenient for on the one hand, on the other hand, its top surface is higher than the top surface of hot mouth behind the leak protection cover embedding ring channel, is favorable to preventing that the plastic from overflowing from between leak protection cover and the flow distribution plate.
Furthermore, in the hot runner system leak protection glued structure of foretell, the lateral wall of ring channel cooperatees with the external diameter of leak protection cover, and the inside wall of ring channel cooperatees with the major diameter hole section of leak protection cover through-hole.
Furthermore, in the hot runner system glue leakage prevention structure, a sealing ring is arranged between the top surface of the hot nozzle and the bottom surface of the flow distribution plate, an annular sealing groove is formed in the top surface of the hot nozzle, and the sealing ring is embedded in the sealing groove.
The utility model has the advantages that:
the leakage-proof sleeve which is nested with the hot nozzle in a clearance manner is arranged below the flow distribution plate, so that the leakage-proof sleeve moves along with the thermal expansion of the flow distribution plate, plastic overflowing from the joint of the flow distribution plate and the hot nozzle is intercepted in the leakage-proof sleeve, the purpose of preventing glue leakage is achieved, the problem of glue leakage caused by the damage of a hot nozzle sealing ring can be avoided, the problem that the product quality and the production progress are influenced by equipment faults is avoided, and even the whole hot runner system is scrapped.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic sectional view of the leakage-proof sleeve in the embodiment of the present invention.
Fig. 3 is a schematic sectional view of a thermal nozzle according to an embodiment of the present invention.
In the figure: 1. a hot runner plate; 10. a template; 2. a splitter plate; 21. a shunt; 22. an annular groove; 3. a hot nozzle; 31. hot glue channel; 32. a sealing groove; 33. an annular rim; 4. a seal ring; 5. a leakage-proof sleeve; 51. a bolt; 52. a through hole; 521. a large-diameter bore section; 522. a small diameter bore section.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and examples:
in the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, and therefore, should not be construed as limiting the present invention.
The anti-leakage sleeve is arranged at the joint of the splitter plate and the hot nozzle, the anti-leakage sleeve is fixedly connected below the splitter plate, a through hole coaxial with the hot nozzle is formed in the center of the anti-leakage sleeve, and the upper portion of the hot nozzle is embedded in the through hole and is in clearance fit with the through hole.
As shown in fig. 1, the hot runner system leakage-proof structure provided by the present embodiment includes a hot runner plate 1, a splitter plate 2, and a hot nozzle 3, wherein the splitter plate 2 is disposed in the hot runner plate 1, the splitter plate 2 has a splitter channel 21 therein, the hot nozzle 3 is disposed below the splitter plate 2, the top surface of the hot nozzle 3 is tightly attached to the bottom surface of the splitter plate 2, and the hot nozzle 3 has a hot glue channel 31 communicated with the splitter channel 21. A sealing ring 4 is arranged between the top surface of the hot nozzle 3 and the bottom surface of the flow distribution plate 2, specifically, an annular sealing groove 32 is arranged on the top surface of the hot nozzle 3, the sealing ring 4 is embedded in the sealing groove 32, and when the die is assembled, the hot nozzle 3 is pressed on the bottom surface of the flow distribution plate 2 through the assembly between the die plates 10, so that the sealing ring 4 is extruded and deformed to realize the sealing between the hot nozzle 3 and the flow distribution plate 2.
As shown in fig. 1, 2 and 3, in order to prevent glue leakage, a leakage-proof sleeve 5 is arranged at the joint of the flow distribution plate 2 and the hot nozzle 3, the leakage-proof sleeve 5 is made of stainless steel, and the selected stainless steel material needs to have better toughness, corrosion resistance, wear resistance and machinability. The leakage-proof sleeve 5 is fixedly connected below the flow distribution plate 2, specifically, an annular groove 22 is arranged on the bottom surface of the flow distribution plate 2, and the leakage-proof sleeve 5 is embedded in the annular groove 22 and is fixedly connected with the flow distribution plate 2 through a bolt 51. The center of the leakage-proof sleeve 5 is provided with a through hole 52 which is coaxial with the hot nozzle 3, and the upper part of the hot nozzle 3 is nested in the through hole 52 and is in clearance fit with the through hole 52. Specifically, the through hole 52 is a stepped hole, and includes a large-diameter hole section 521 close to the splitter plate 2 and a small-diameter hole section 522 far away from the splitter plate 2, the small-diameter hole section 522 is in clearance fit with the outer wall of the hot nozzle 3, the upper end of the hot nozzle 3 extends radially to form an annular edge 33, and the annular edge 33 is in clearance fit with the large-diameter hole section 521; meanwhile, the outer side wall of the annular groove 22 is matched with the outer diameter of the leakage-proof sleeve 5, and the inner side wall of the annular groove 22 is matched with the large-diameter hole section 521 of the through hole 52 of the leakage-proof sleeve 5. The fit clearance of the hot nozzle 3 and the through hole 52 of the leakage-proof sleeve 5 is determined according to the variation of actual thermal expansion, the radial fit clearance is matched with the thermal expansion variation of the splitter plate 2, the axial clearance between the bottom surface of the annular edge 33 of the hot nozzle 3 and the step surface of the through hole 52 is smaller and is 0.1mm, and the plastic cement overflowing to the position is favorably solidified, so that the purpose of preventing leakage is achieved. During assembly, the hot nozzle 3 penetrates through the leakage-proof sleeve 5, the upper part of the hot nozzle 3 is embedded into the through hole 52 of the leakage-proof sleeve 5, the leakage-proof sleeve 5 is embedded into the annular groove 22 of the flow distribution plate 2, and the leakage-proof sleeve 5 and the flow distribution plate 2 are fixed by using the bolt 51.
Finally, it is understood that various other changes and modifications can be made by those skilled in the art based on the technical idea of the present invention, and all such changes and modifications should fall within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a hot runner system leak protection glued structure, includes hot runner plate, flow distribution plate, hot mouth, the flow distribution plate sets up in hot runner plate, has the subchannel in the flow distribution plate, hot mouth sets up in the flow distribution plate below, and the bottom surface of flow distribution plate is hugged closely to hot mouth's top surface, hot mouth have with the hot gluey way of subchannel intercommunication, its characterized in that: the anti-leakage sleeve is arranged at the joint of the splitter plate and the hot nozzle, the anti-leakage sleeve is fixedly connected below the splitter plate, a through hole coaxial with the hot nozzle is formed in the center of the anti-leakage sleeve, and the upper portion of the hot nozzle is embedded in the through hole and is in clearance fit with the through hole.
2. The hot runner system cement leakage prevention structure of claim 1, wherein: the through hole is a stepped hole and comprises a large-diameter hole section close to the splitter plate and a small-diameter hole section far away from the splitter plate, the small-diameter hole section is in clearance fit with the outer wall of the hot nozzle, the upper end of the hot nozzle extends radially to form an annular edge, and the annular edge is in clearance fit with the large-diameter hole section.
3. The hot runner system leak-proof structure of claim 1 or 2, wherein: the bottom surface of the flow distribution plate is provided with an annular groove, and the leakage-proof sleeve is embedded in the annular groove and is fixedly connected with the flow distribution plate through a bolt.
4. The hot runner system leak-proof structure of claim 3, wherein: the outer side wall of the annular groove is matched with the outer diameter of the leakage-proof sleeve, and the inner side wall of the annular groove is matched with the large-diameter hole section of the through hole of the leakage-proof sleeve.
5. The hot runner system leak-proof structure of claim 1, wherein: and a sealing ring is arranged between the top surface of the hot nozzle and the bottom surface of the flow distribution plate, an annular sealing groove is formed in the top surface of the hot nozzle, and the sealing ring is embedded in the sealing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222220043.3U CN218314993U (en) | 2022-08-23 | 2022-08-23 | Glue leakage prevention structure of hot runner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222220043.3U CN218314993U (en) | 2022-08-23 | 2022-08-23 | Glue leakage prevention structure of hot runner system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218314993U true CN218314993U (en) | 2023-01-17 |
Family
ID=84883930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222220043.3U Active CN218314993U (en) | 2022-08-23 | 2022-08-23 | Glue leakage prevention structure of hot runner system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218314993U (en) |
-
2022
- 2022-08-23 CN CN202222220043.3U patent/CN218314993U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218314993U (en) | Glue leakage prevention structure of hot runner system | |
| CN202727276U (en) | Injection mould with air exhaust function | |
| CN205997275U (en) | A kind of injection mold nozzle avoiding resin carbonation | |
| CN107696432A (en) | A kind of sprayer of injection molding machine cooling device | |
| CN202357402U (en) | Water transporting sleeve for hot runner system of injection mold | |
| CN209682820U (en) | A kind of leakproof plastic structure applied between main burner and flow distribution plate | |
| CN210552596U (en) | Liquid silica gel injection molding machine | |
| CN210389974U (en) | Flow distribution plate structure of plastic mold hot runner | |
| CN208050910U (en) | Titanium alloy material cylinder structure | |
| CN105251970A (en) | Low-pressure casting die for aluminum alloy wheel | |
| CN202040485U (en) | Combined thermal insulation connecting washer | |
| CN215512089U (en) | Hot nozzle structure in hot runner system | |
| CN201231558Y (en) | Hot nozzle of hot runner system | |
| CN205343664U (en) | Gluing of sealing of hot runner constructs | |
| CN214239246U (en) | Special structure nozzle for injection molding | |
| CN212194041U (en) | Cooling nozzle with annular water jacket | |
| CN220946456U (en) | Side glue feeding hot nozzle | |
| CN219133083U (en) | Hot nozzle assembly, hot runner system and gas-assisted forming die | |
| CN212241952U (en) | Standardized modular structure of injection mold hot runner system | |
| CN106079284A (en) | A kind of injection mold nozzle avoiding resin carbonation | |
| CN210126255U (en) | Be applied to injection nozzle mounting structure on open hot runner injection mold | |
| CN204164524U (en) | A kind of composite steel-plastic pipe fitting Steel Skeleton with runner | |
| CN210501186U (en) | Parting surface cold runner of silicone rubber insulator forming die | |
| CN219667325U (en) | Needle valve type hot runner assembly | |
| CN217073110U (en) | Oil seal mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |