CN212219144U - Needle valve hot runner shunt shuttle and injection mold - Google Patents
Needle valve hot runner shunt shuttle and injection mold Download PDFInfo
- Publication number
- CN212219144U CN212219144U CN202020534010.4U CN202020534010U CN212219144U CN 212219144 U CN212219144 U CN 212219144U CN 202020534010 U CN202020534010 U CN 202020534010U CN 212219144 U CN212219144 U CN 212219144U
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- shuttle
- hot runner
- needle valve
- nozzle body
- needle
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- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000004033 plastic Substances 0.000 abstract description 12
- 229920003023 plastic Polymers 0.000 abstract description 12
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000013585 weight reducing agent Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 10
- 239000003292 glue Substances 0.000 description 9
- 238000001746 injection moulding Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a needle valve hot runner reposition of redundant personnel shuttle, include: the split flow shuttle comprises a split flow shuttle body, a hot nozzle body, a valve needle, a fusiform runner and a pouring gate, wherein the split flow shuttle body is arranged above the hot nozzle body; the shuttle-shaped flow passage is symmetrically provided with shuttle-shaped parts in the shunting shuttle body, the shuttle-shaped flow passage is provided with linear parts in the thermal nozzle body along the central axis of the thermal nozzle body, and the shuttle-shaped parts are communicated with the linear parts; a gate is arranged below the straight line part, and the valve pin concentrically penetrates through the straight line part and is used for opening or closing the gate. The utility model also provides an injection mold, it includes foretell needle valve hot runner reposition of redundant personnel shuttle. This practicality does not adopt eccentric structure and reduces a hot runner plate, and the mould becomes simple, weight reduction, and corresponding tonnage of moulding plastics also diminishes.
Description
Technical Field
The utility model relates to a field of moulding plastics, in particular to needle valve hot runner reposition of redundant personnel shuttle and injection mold.
Background
The injection mold is provided with two glue feeding systems, namely a cold runner system and a hot runner system, and the hot runner system is mainly divided into two major systems, namely a needle point system and a needle valve system.
As shown in fig. 1, the pin-point hot runner has a gate 11a, a hot nozzle body 12a, a nozzle core 13a and a rubber sealing ring 14a, the gate 11a of the pin-point hot runner is of an open structure, the diameter of the gate cannot exceed more than 2mm, and the defects of wire drawing, material cooling, high breaking point and the like easily occur when the gate is too large; however, when the gate is too small, the injection pressure is high, and the shearing force near the gate is high, which causes defects such as gate lines and flow lines, and affects the appearance.
As shown in fig. 2, the needle valve type hot runner has a gate 11b, a hot nozzle body 12b, a nozzle core 13b, a sealing ring 14b and a valve needle 15b, wherein the gate 11b is controlled to be opened and closed by the valve needle 15b, the cross section of the gate position is flat, the gate can be 3-5 mm, the gate is large, the glue yield is large, the relative injection pressure is reduced, defects such as gate lines and flow lines cannot occur, and the production requirement is met.
As shown in fig. 3, the needle valve hot runner system mainly drives the valve needle to vertically move up and down through the piston on the cylinder body, in the production process of the mold, when the valve needle moves up, the gate is opened, the mold is in a glue injection and pressure maintaining state, and the plastic melt enters the mold cavity; when the valve pin moves downwards, the pouring gate is closed, the plastic melt stops entering the mold cavity, and the mold is in a cooling and demolding state. When the mold hot runner is designed by using a single-point needle valve system, the design is limited by the structure, and the main injection nozzle 16b of the mold and the needle valve system which are butted with each other by a barrel of the injection molding machine must be designed in a staggered mode, namely the needle valve system needs to avoid the injection nozzle. In addition, continuing as shown in fig. 3, the injection mold including the needle valve hot runner system sequentially comprises from top to bottom: the fixed mould fixed plate 1b, hot runner plate 2b, fixed die plate 3b and fixed mould benevolence 4b, the needle valve formula hot runner runs through fixed mould fixed plate 1b, hot runner plate 2b, fixed die plate 3b and fixed mould benevolence 4b in proper order, and hot runner plate 2b is indispensable, and its eccentric structure that is used for holding the needle valve formula hot runner. However, the eccentric structure formed by the staggered design mold causes the large tonnage, complex structure, high cost and unfavorable production of the whole needle valve hot runner system.
In view of this, in order to overcome the technical defect, the present invention provides a needle valve hot runner shunt shuttle and an injection mold.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a needle valve hot runner reposition of redundant personnel shuttle and injection mold, it can avoid adopting eccentric structure and hot runner plate, and the mould becomes simple, weight reduction, and corresponding tonnage of moulding plastics also diminishes.
In order to achieve the above object, the utility model provides a needle valve hot runner reposition of redundant personnel shuttle, it includes: a shunt shuttle body, a hot nozzle body, a valve needle, a fusiform runner and a sprue,
the shunt shuttle body is arranged above the hot nozzle body;
the shuttle-shaped flow passage is symmetrically provided with shuttle-shaped parts in the shunting shuttle body, the shuttle-shaped flow passage is provided with linear parts in the thermal nozzle body along the central axis of the thermal nozzle body, and the shuttle-shaped parts are communicated with the linear parts;
a gate is arranged below the straight line part, and the valve pin concentrically penetrates through the straight line part and is used for opening or closing the gate.
The needle valve hot runner shunt shuttle is characterized in that a piston is sleeved outside the shunt shuttle body and connected with the top end of a needle, and the piston is driven by a cylinder.
The needle valve hot runner shunt shuttle, wherein, the cylinder is including last cylinder cap, cylinder body and the lower cylinder cap that from top to bottom connects gradually, be equipped with a plurality of sealing washers between piston and the cylinder body.
The needle valve hot runner shunt shuttle is characterized in that the cylinder body is also connected with two air pipes and is used for inputting air into the cylinder body to drive the piston to move upwards or downwards.
The needle valve hot runner shunt shuttle is characterized in that a nozzle core is arranged in the hot nozzle body and close to the lower part of the hot nozzle body, and the nozzle core is arranged between the hot nozzle body and the linear part.
The needle valve hot runner shunt shuttle is characterized in that a rubber sealing ring is arranged below the thermal resistance body, and the upper part of the rubber sealing ring is embedded between the thermal resistance body and the nozzle core for fixing.
The needle valve hot runner shunt shuttle is characterized in that a copper sleeve is sleeved outside the thermal resistance body.
The needle valve hot runner shunt shuttle is characterized in that a shunt shuttle heating wire is wound outside the heat resistance body.
The utility model also provides an injection mold, it includes foretell needle valve hot runner reposition of redundant personnel shuttle and mould body, the mould body includes from top to bottom in proper order: cover half fixed plate and fixed die plate, the fixed die plate is inside from top to bottom has the mould benevolence chamber that is used for installing cover half mould benevolence and is used for placing the product die cavity of product in proper order, the upper portion of needle valve hot runner reposition of redundant personnel shuttle is fixed in the cover half fixed plate, and its lower part is fixed in the cover half mould benevolence.
The injection mold, wherein, needle valve hot runner reposition of redundant personnel shuttle top is fixed in the cover half fixed plate through the cover half clamping ring.
The utility model has the advantages that: the needle valve system is integrated with a needle valve action structure, and on the premise that the mold is not eccentrically arranged, a single-point needle valve type hot runner structure is designed by adding the shunt shuttle on the needle valve system, so that the mold is low in manufacturing cost and simple and compact in structure, in addition, the mold is not required to be dislocated and eccentric, a hot runner plate can be reduced, the mold is simple, the weight is reduced, and the corresponding injection molding tonnage is also reduced.
Drawings
Fig. 1 is a schematic structural view of a conventional needle-point hot runner;
FIG. 2 is a schematic structural view of a conventional needle valve type hot runner;
FIG. 3 is a schematic diagram of a prior art needle valve type flow passage system;
FIG. 4 is a cross-sectional view of a needle valve hot runner diverter shuttle according to the present invention;
FIG. 5 is a perspective view of a needle valve hot runner diverter shuttle according to the present invention;
fig. 6 is a cross-sectional view of an injection mold according to the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring first to fig. 4 and 5, there are shown a cross-sectional view and a perspective view, respectively, of a needle valve hot runner manifold according to the present invention. The utility model provides a needle valve hot runner reposition of redundant personnel shuttle 1, it includes: the split shuttle comprises a split shuttle body 10, a sprue 11, a hot nozzle body 12, a nozzle core 13, a rubber sealing ring 14, a valve needle 15, a shuttle-shaped flow passage 16, an upper cylinder cover 17, a cylinder body 18, a lower cylinder cover 19, an anti-rotation pin 20, a copper sleeve 21, a split shuttle heating wire 22, a valve needle pressing block 23, a sealing ring 24, a gas pipe 25, a piston 26, a copper sleeve heating wire 27 and a valve needle sleeve 28.
Wherein, the shunt shuttle body 10 is arranged above the hot nozzle body 12. The shunting shuttle body 10 has the functions of shunting, continuously heating the molten plastic, preserving heat and bearing the lower hot nozzle body 12. The hot nozzle body 12 functions in collecting flow, continuously heating the molten plastic, preserving heat and carrying the upper shunt shuttle body.
The shuttle-shaped flow passage 16 is symmetrically provided with shuttle-shaped parts 16 'inside the shunt shuttle body 10, and a straight line part 16' is arranged inside the thermal nozzle body 12 along the central axis of the thermal resistance body 12, wherein the shuttle-shaped part 16 'is communicated with the straight line part 16'. The valve pin 15 is concentrically disposed in the linear portion 16 ", and a gate 11 is disposed below the linear portion 16", and the gate 11 is opened or closed by moving the valve pin 15 up and down along the central axis of the shunt shuttle 1.
The thermal nozzle is characterized in that a nozzle core 13 is arranged in the thermal nozzle body 12 close to the lower part, the nozzle core 13 is arranged between the thermal nozzle body 12 and the linear part 16', the nozzle core 13 is made of beryllium copper, has good thermal conductivity and plays a role of heat conduction, and the heat of the thermal resistance body 12 is conducted to the position close to the sprue 11, so that the sprue plastic can be kept in a molten state.
The glue sealing ring 14 is positioned below the heat resistance body 12, and the upper part of the glue sealing ring 14 is embedded between the heat resistance body 12 and the nozzle core 13 for fixing. The glue sealing ring 14 cooperates with the fixed mold core 33 (shown in fig. 6) to perform a function of sealing glue.
The copper sleeve 21 is sleeved outside the thermal resistance body 12, is made of beryllium copper, has good thermal conductivity and plays a role of heat conduction, the copper sleeve 21 is heated through the copper sleeve heating wire 27, and the copper sleeve 21 can uniformly conduct heat to the thermal nozzle body 12 so as to keep plastics in a molten state.
The valve needle sleeve 28 is sleeved on the valve needle 15 and used for guiding the valve needle 15 and playing a role of sealing glue.
The piston 26 is sleeved outside the shunt shuttle body 10, and the piston 26 is a moving part and is tightly connected with the valve needle pressing block 23 at the top end of the valve needle 15 through a central beam (integrated with the piston), so that the valve needle moves up and down under the pushing of air pressure. It should be noted that the connecting portion of the piston 26 and the valve needle pressing block 23 is not shown in fig. 4, because the connecting portion of the piston 26 and the valve needle pressing block 23 is not located on the cross section in fig. 3, in other words, the connecting portion of the piston 26 and the valve needle pressing block 23 is not coplanar with the plane of the shuttle portion 16.
The shunting shuttle further comprises an air cylinder which comprises an upper cylinder cover 17, a cylinder body 18 and a lower cylinder cover 19 which are sequentially connected from top to bottom, and the air cylinder is sleeved outside the piston 26. The upper cylinder cover 17 plays a role in fixing, protecting and loading various parts in the cylinder, the cylinder body 18 plays a role in bearing the air pressure in the cylinder and guiding the longitudinal action of the piston to do work, and the lower cylinder cover plays a role in fixing, protecting and loading various parts in the cylinder and bearing the air pressure in the cylinder. Wherein a plurality of sealing rings 24 are arranged between the piston 26 and the cylinder 18.
The cylinder 18 is also connected to two air pipes 25 for supplying air to the interior of the cylinder 18, thereby driving the piston 26 to move upward or downward, and thus moving the valve needle 15 upward or downward.
In addition, the bottom of the lower cylinder cover 19 is provided with an anti-rotation pin 20, so that the lower cylinder cover 19 together with the whole split shuttle structure is fixed in a fixed die fixing plate 31 (shown in fig. 6). The anti-rotation pin 20 plays a role in positioning and anti-rotation, and in the production process, plastic is melted and injected into the cavity from the gun nozzle of the injection molding machine through the shunt shuttle body 10, the hot nozzle body 12 and the nozzle core 13 to form a product.
The shunt shuttle heating wire 22 is wound on the shunt shuttle body 10 and used for heating the shunt shuttle body 10, and the shunt shuttle heating wire 22 can uniformly conduct heat to the shunt shuttle body 10 so as to keep plastics in a molten state. The winding manner of the shunt shuttle heating wire 22 is various, and can be wave-shaped, pulse-shaped, zigzag-shaped and the like.
As shown in fig. 6, the utility model also provides an injection mold, it includes foretell needle valve hot runner reposition of redundant personnel shuttle 1 and mould body, the mould body includes from top to bottom in proper order: the fixed die fixing plate 31 and the fixed die plate 32, the fixed die plate 32 has a die cavity for mounting the fixed die 33 and a product cavity 321 for placing a product therein in sequence from top to bottom. The upper part of the needle valve hot runner shunt shuttle 1 is fixed in the fixed die fixing plate 31, and the lower part of the needle valve hot runner shunt shuttle is fixed in the fixed die core 33. In addition, the upper part of the needle valve hot runner shunt shuttle 1 is fixed in a fixed die fixing plate 31 through a fixed die clamping ring 30.
The utility model discloses in, because injection molding machine big gun is chewed (1 top center of needle valve hot runner reposition of redundant personnel shuttle promptly) and cylinder (17, 18, 19), needle 15, body 12 needs on same central line is chewed to the heat, so the structure of reposition of redundant personnel shuttle has played crucial effect, the reposition of redundant personnel shuttle makes plastics melt flow from both sides through converging again on the body 12 is chewed to the heat and pours into product die cavity 321 into, cylinder piston center connecting rod borrows the needle 15 that the trench can the connected system central point in the middle of the reposition of redundant personnel shuttle, needle 15 realizes under the drive of piston 26 that runner 11 opens and the action of closing.
After the glue feeding and valve needle action structure of the single hot nozzle needle valve system is integrated, the gun nozzle and the hot nozzle body 12 of the injection molding machine can be on the same central line, the mold does not need to be staggered and eccentric, a hot runner plate can be reduced, the mold is simple, the weight is reduced, and the corresponding injection molding tonnage is also reduced.
To sum up, the beneficial effects of the utility model reside in that: the needle valve system is integrated with a needle valve action structure, and on the premise that the mold is not eccentrically arranged, a single-point needle valve type hot runner structure is designed by adding the shunt shuttle on the needle valve system, so that the mold is low in manufacturing cost and simple and compact in structure, in addition, the mold is not required to be dislocated and eccentric, a hot runner plate can be reduced, the mold is simple, the weight is reduced, and the corresponding injection molding tonnage is also reduced.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. A needle valve hot runner manifold, comprising: a shunt shuttle body, a hot nozzle body, a valve needle, a fusiform runner and a sprue,
the shunt shuttle body is arranged above the hot nozzle body;
the shuttle-shaped flow passage is symmetrically provided with shuttle-shaped parts in the shunting shuttle body, the shuttle-shaped flow passage is provided with linear parts in the thermal nozzle body along the central axis of the thermal nozzle body, and the shuttle-shaped parts are communicated with the linear parts;
a gate is arranged below the straight line part, and the valve pin concentrically penetrates through the straight line part and is used for opening or closing the gate.
2. The needle valve hot runner manifold as defined in claim 1 wherein the manifold body is externally sleeved with a piston, the piston being connected to the top end of the valve needle, the piston being driven by a cylinder.
3. The needle valve hot runner manifold as claimed in claim 2, wherein the cylinder comprises an upper cylinder cover, a cylinder body and a lower cylinder cover connected in sequence from top to bottom, and a plurality of sealing rings are disposed between the piston and the cylinder body.
4. The needle valve hot runner manifold as in claim 3, wherein the cylinder is further connected to two gas lines for supplying gas to the interior of the cylinder to drive the piston up or down.
5. The needle valve hot runner manifold as claimed in any one of claims 1 to 4 wherein a nozzle core is provided within the hot nozzle body adjacent below, the nozzle core being provided between the hot nozzle body and the linear portion.
6. The needle valve hot runner manifold as claimed in claim 5, wherein a rubber sealing ring is provided below the hot nozzle body, and an upper portion of the rubber sealing ring is embedded between the hot nozzle body and the nozzle core for fixation.
7. The needle valve hot runner manifold as claimed in any one of claims 1 to 4 wherein the hot nozzle body is jacketed with a copper jacket.
8. The needle valve hot runner manifold as claimed in any one of claims 1 to 4 wherein a manifold heater is wrapped around the hot nozzle body.
9. An injection mold, comprising the needle valve hot runner manifold as claimed in any one of claims 1 to 8 and a mold body, wherein the mold body comprises, from top to bottom: cover half fixed plate and fixed die plate, the fixed die plate is inside from top to bottom has the mould benevolence chamber that is used for installing cover half mould benevolence and is used for placing the product die cavity of product in proper order, the upper portion of needle valve hot runner reposition of redundant personnel shuttle is fixed in the cover half fixed plate, and its lower part is fixed in the cover half mould benevolence.
10. An injection mold as claimed in claim 9, wherein the needle valve hot runner manifold is secured in the stationary mold mounting plate above by a stationary mold clamping ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020534010.4U CN212219144U (en) | 2020-04-13 | 2020-04-13 | Needle valve hot runner shunt shuttle and injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020534010.4U CN212219144U (en) | 2020-04-13 | 2020-04-13 | Needle valve hot runner shunt shuttle and injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212219144U true CN212219144U (en) | 2020-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020534010.4U Active CN212219144U (en) | 2020-04-13 | 2020-04-13 | Needle valve hot runner shunt shuttle and injection mold |
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| Country | Link |
|---|---|
| CN (1) | CN212219144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113320099A (en) * | 2021-07-07 | 2021-08-31 | 广东柳道热流道系统有限公司 | Anti-leakage single valve nozzle |
-
2020
- 2020-04-13 CN CN202020534010.4U patent/CN212219144U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113320099A (en) * | 2021-07-07 | 2021-08-31 | 广东柳道热流道系统有限公司 | Anti-leakage single valve nozzle |
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