CN212072797U - Hot runner device - Google Patents
Hot runner device Download PDFInfo
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- CN212072797U CN212072797U CN202020548647.9U CN202020548647U CN212072797U CN 212072797 U CN212072797 U CN 212072797U CN 202020548647 U CN202020548647 U CN 202020548647U CN 212072797 U CN212072797 U CN 212072797U
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- needle
- hot
- valve needle
- flow distribution
- distribution plate
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Abstract
The utility model discloses a hot runner device, connect including needle, flow distribution plate and dismantling the hot mouth of flow distribution plate bottom, needle from the top down runs through in proper order flow distribution plate and hot mouth, the needle is connected with and slides from top to bottom with the switching its drive the needle drive arrangement of hot mouth, inlay the needle cover of valve in the flow distribution plate, it has the tungsten steel spare to inlay in the needle cover, the tungsten steel spare seted up vertical run-through and with the first guiding hole of needle sliding fit. The utility model discloses an inlay corrosion-resistant tungsten steel spare in the needle cover, set up the guiding hole with the needle adaptation in tungsten steel spare, greatly improved hot runner device's life, make the life who pours corrosion-resistant material's hot runner reach 30 ten thousand mould times.
Description
Technical Field
The utility model belongs to the technical field of hot runner system, concretely relates to hot runner device.
Background
The hot runner device is used for injecting plastic cement heated to a molten state by the injection molding machine into a cavity of the injection mold to form an injection molding product. The hot runner device comprises a flow distribution plate, a hot nozzle 4, a valve needle and a valve needle driving device; a runner hole is formed in the splitter plate and communicates the sprue bush with the hot nozzle 4; the hot nozzle 4 is detachably connected to the bottom of the flow distribution plate, the valve needle sequentially penetrates through the flow distribution plate and the hot nozzle 4, the valve needle driving device can be an oil cylinder, an air cylinder or a spring and the like, and the valve needle driving device drives the valve needle to slide up and down so as to control the opening and closing of the hot nozzle 4. Among the prior art, the vertical needle hole that runs through is seted up to the flow distribution plate, the needle sets up in the needle hole, the upper portion of needle hole is inlayed and is had the needle cover with needle sliding fit, the clearance that makes the melting plastic flow in has between the lower part of needle hole and the needle, when pouring the stronger injection moulding material of corrosivity, like the PA material, the LCP material, contain the material such as more than 50% fine glass or more than 50% carbon fibre, the needle cover that the high-speed steel was made is not corrosion-resistant, lead to the clearance grow between needle cover and the needle, and then lead to the emergence of the excessive gluey condition, hot runner device's life has been reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the needle cover that prior art medium-high speed steel made and not corrosion-resistant, lead to the clearance grow gradually between needle cover and the needle, and then lead to the emergence of the excessive gluey condition, reduced hot runner device's life's technical problem, the utility model aims to provide a hot runner device, the utility model discloses an inlay corrosion-resistant tungsten steel spare in the needle cover, set up the guiding hole with the needle adaptation in tungsten steel spare, greatly improved hot runner device's life, make the life of pouring corrosion-resistant material's hot runner reach 30 ten thousand module times.
The utility model discloses the technical scheme who adopts does:
the utility model provides a hot runner device, includes needle, flow distribution plate and can dismantle the connection and be in the hot mouth 4 of flow distribution plate bottom, needle from the top down runs through in proper order flow distribution plate and hot mouth 4, the needle is connected with and slides from top to bottom with the switching its needle drive arrangement of hot mouth 4, inlay the needle cover in the flow distribution plate, it has the tungsten steel spare to inlay in the needle cover, the tungsten steel spare seted up vertical run-through and with the first guiding hole of needle sliding fit.
As a further alternative of the hot runner device, the tungsten steel piece is embedded in the lower part of the valve needle sleeve, and a second guide hole in sliding fit with the valve needle is formed in the upper part of the valve needle sleeve.
As a further alternative of the hot runner device, the flow distribution plate is provided with a first positioning hole matched with the valve needle sleeve in a positioning manner.
As a further alternative of the hot runner device, the valve needle sleeve is provided with a second positioning hole matched with the tungsten steel part in a positioning manner.
As a further alternative of the hot runner device, a disassembly plate is fixed above the valve needle sleeve, the disassembly plate is located above the flow distribution plate, and the disassembly plate is provided with a first threaded hole which vertically penetrates through the disassembly plate.
As a further alternative to the hot runner apparatus, the valve needle sleeve is removably connected to the take-down plate.
As a further alternative of the hot runner device, the dismounting plate is provided with a second threaded hole which vertically penetrates through the dismounting plate, and the valve needle sleeve is provided with an external thread which is matched with the second threaded hole.
As a further alternative of the hot runner device, the valve needle sleeve comprises a connecting end and a matching end which are sequentially connected, the diameter of the connecting end is smaller than that of the matching end, and an external thread matched with the second threaded hole is formed in the excircle of the connecting end.
As a further alternative of the hot runner apparatus, the first threaded bore is provided in a plurality, and the plurality of first threaded bores are evenly distributed around the valve pin sleeve.
The utility model has the advantages that:
the utility model discloses an inlay corrosion-resistant tungsten steel spare in the needle cover, set up the guiding hole with the needle adaptation in tungsten steel spare, greatly improved hot runner device's life, make the life who pours corrosion-resistant material's hot runner reach 30 ten thousand mould times.
Other advantageous effects of the present invention will be described in detail in the detailed description of the invention.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the description of the embodiments will be briefly introduced below, it should be understood that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a hot runner apparatus of the present invention;
fig. 2 is an enlarged structural schematic of region a in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the hot runner device of this embodiment, including needle 2, flow distribution plate 3 and can dismantle hot mouth 4 of connection in the flow distribution plate 3 bottom, needle 2 from the top down runs through flow distribution plate 3 and hot mouth 4 in proper order, needle 2 is connected with the needle drive arrangement 1 that drives it and slide from top to bottom in order to open and close hot mouth 4, inlay needle cover 6 in the flow distribution plate 3, it has tungsten steel 7 to inlay in the needle cover 6, tungsten steel 7 has seted up vertical through and with needle 2 sliding fit's first guiding hole.
Valve needle cover 6 among the prior art all adopts the high-speed steel to make like SKH51, and corrosion resistance is poor, the utility model discloses an inlay corrosion-resistant tungsten steel spare 7 in valve needle cover 6 to set up first guiding hole on tungsten steel spare 7, make tungsten steel spare 7 and needle 2 sliding fit, greatly reduce the rate of wear, thereby improve hot runner device's life, through the test, hot runner device life-span in this embodiment can improve to 30 ten thousand module times.
The tungsten steel part 7 is a part made of tungsten steel, which can be realized by using materials in the prior art, such as a material with the trade mark of CD 650.
It should be noted that the present invention only provides new improvements to the valve needle sleeve in the hot runner device, and the specific structures of other components except the valve needle sleeve, such as the valve needle driving device, the flow distribution plate, the hot nozzle, the valve needle, etc., are well known in the art, and will not be described herein.
In the embodiment, as shown in fig. 2, the tungsten steel member 7 is embedded in the lower portion of the needle sleeve 6, and the upper portion of the needle sleeve 6 is provided with the second guide hole slidably engaged with the needle 2, so as to increase the engagement length of the needle 2 and improve the stability, it should be noted that, because the tungsten steel member 7 is located at the lower portion of the second guide hole, the corrosive plastic brought by the needle 2 is scraped by the tungsten steel member 7, so that the second guide hole is not corroded by the corrosive plastic.
As shown in fig. 2, in this embodiment, the diversion plate 3 is provided with a first positioning hole which is matched with the valve needle housing 6 in a positioning manner, so that the valve needle housing 6 does not need to be adjusted when the valve needle housing 6 is replaced, and the installation time is reduced.
As shown in fig. 2, in the present embodiment, the valve needle sleeve 6 is provided with a second positioning hole in positioning fit with the tungsten steel 7, so that the position of the tungsten steel 7 does not need to be adjusted when the tungsten steel 7 is replaced, and the installation time is reduced.
As shown in fig. 2, in the present embodiment, a detaching plate 8 is fixed above the needle sleeve 6, the detaching plate 8 is located above the flow distribution plate 3, and the detaching plate 8 is provided with a first threaded hole 81 vertically penetrating through the detaching plate 8, so as to facilitate detaching the needle sleeve 6, specifically, a bolt is screwed into the first threaded hole 81, and then the bolt is rotated to convert a moment into a vertical pulling force through the bolt, so as to detach the needle sleeve 6 from the flow distribution plate 3, which is time-saving and labor-saving.
As shown in fig. 2, in the present embodiment, the needle sleeve 6 is detachably connected to the disassembling plate 8, so that the disassembling plate 8 is prevented from being replaced together, the cost is saved, and the waste is reduced.
As shown in fig. 2, in the present embodiment, the dismounting plate 8 is provided with a second threaded hole vertically penetrating therethrough, and the needle sleeve 6 is provided with an external thread adapted to the second threaded hole, so as to fix the needle sleeve 6 and rotate the dismounting plate 8; or, the disassembly plate 8 is fixed, and the valve needle sleeve 6 is rotated, so that the valve needle sleeve 6 and the disassembly plate 8 can be separated very conveniently.
As shown in fig. 2, in this embodiment, the valve needle sleeve 6 includes a connecting end and a mating end that are sequentially connected from top to bottom, the diameter of the connecting end is smaller than that of the mating end, and an external thread adapted to the second threaded hole is formed on an outer circle of the connecting end, so that the vertical displacement of the valve needle sleeve 6 is limited by a step between the connecting end and the mating end.
As shown in fig. 2, in this embodiment, the first threaded holes 81 are provided in plural numbers, and the plural first threaded holes 81 are uniformly distributed around the needle sleeve 6, so that when the needle sleeve 6 is pulled out, the force can be uniformly applied, and the needle sleeve 6 is prevented from being jammed on the flow distribution plate 3 due to the eccentricity of the pulling-out force.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (9)
1. The utility model provides a hot runner device, includes needle, flow distribution plate and can dismantle the connection and be in hot mouth (4) of flow distribution plate bottom, needle from the top down runs through in proper order flow distribution plate and hot mouth (4), the needle is connected with and drives its upper and lower slip with the switching the needle drive arrangement of hot mouth (4), inlay the needle cover of valve in the flow distribution plate, its characterized in that: the valve needle sleeve is internally embedded with a tungsten steel piece, and the tungsten steel piece is provided with a first guide hole which vertically penetrates through and is in sliding fit with the valve needle.
2. The hot-runner apparatus of claim 1, wherein: the tungsten steel piece is embedded in the lower portion of the valve needle sleeve, and a second guide hole in sliding fit with the valve needle is formed in the upper portion of the valve needle sleeve.
3. The hot-runner apparatus of claim 1, wherein: the flow distribution plate is provided with a first positioning hole matched with the valve needle sleeve in a positioning mode.
4. The hot-runner apparatus of claim 1, wherein: and the valve needle sleeve is provided with a second positioning hole matched with the tungsten steel piece in a positioning way.
5. The hot-runner apparatus of claim 1, wherein: a detaching plate is fixed above the valve needle sleeve and located above the flow distribution plate, and a first threaded hole which vertically penetrates through the detaching plate is formed in the detaching plate.
6. The hot-runner apparatus of claim 5, wherein: the valve needle sleeve is detachably connected with the disassembling plate.
7. The hot-runner apparatus of claim 6, wherein: the disassembly plate is provided with a second threaded hole which vertically penetrates through the disassembly plate, and the valve needle sleeve is provided with an external thread matched with the second threaded hole.
8. The hot-runner apparatus of claim 7, wherein: the valve needle sleeve comprises a connecting end and a matching end which are connected in sequence, the diameter of the connecting end is smaller than that of the matching end, and an external thread matched with the second threaded hole is formed in the outer circle of the connecting end.
9. The hot-runner apparatus of claim 5, wherein: the first threaded holes are provided with a plurality of, and a plurality of first threaded holes are around needle cover evenly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020548647.9U CN212072797U (en) | 2020-04-14 | 2020-04-14 | Hot runner device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020548647.9U CN212072797U (en) | 2020-04-14 | 2020-04-14 | Hot runner device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212072797U true CN212072797U (en) | 2020-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020548647.9U Active CN212072797U (en) | 2020-04-14 | 2020-04-14 | Hot runner device |
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| CN (1) | CN212072797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114953363A (en) * | 2022-04-24 | 2022-08-30 | 浙江恒道科技有限公司 | Embedded runner insert mechanism for hot runner mold |
-
2020
- 2020-04-14 CN CN202020548647.9U patent/CN212072797U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114953363A (en) * | 2022-04-24 | 2022-08-30 | 浙江恒道科技有限公司 | Embedded runner insert mechanism for hot runner mold |
| CN114953363B (en) * | 2022-04-24 | 2024-05-14 | 浙江恒道科技股份有限公司 | Embedded runner insert mechanism for hot runner mold |
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