CN202607980U - Hot runner valve needle system - Google Patents
Hot runner valve needle system Download PDFInfo
- Publication number
- CN202607980U CN202607980U CN 201220226702 CN201220226702U CN202607980U CN 202607980 U CN202607980 U CN 202607980U CN 201220226702 CN201220226702 CN 201220226702 CN 201220226702 U CN201220226702 U CN 201220226702U CN 202607980 U CN202607980 U CN 202607980U
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- Prior art keywords
- chewing
- needle
- hole
- head
- hot runner
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a hot runner valve needle system. The hot runner valve needle system comprises a nozzle body, a nozzle head fixed on the bottom of the nozzle body and a valve needle which penetrates through the nozzle body and the nozzle head simultaneously. A channel is formed in the nozzle body in a longitudinal direction, a first positioning hole of which the inner diameter is greater than that of the channel is formed at the bottom of the channel, and a thread hole is formed at the bottom of the first positioning hole; a positioning column is arranged on the top of the nozzle head; a lock column with an outer thread is arranged on the bottom of the first positioning column; a through hole is formed in the nozzle head in a longitudinal direction; a nozzle guide hole is formed in the middle part of the through hole, which is positioned in the vertical direction of the nozzle head; the valve needle comprises a valve rod and a valve needle guide column arranged at the bottom of the valve rod; the nozzle head penetrates through the bottom of the nozzle body to enter the channel; the first positioning column is inserted into the first positioning hole; the lock column is accommodated in the thread hole; the nozzle head and the nozzle body are fixed by matching the outer thread on the lock column and the thread hole; and the valve needle penetrates through the top of the nozzle body to enter the channel, and the valve needle guide column is inserted into the nozzle head guide hole.
Description
Technical field
The utility model relates to the hot runner mould technical field, relates in particular to a kind of hot runner valve needle system.
Background technology
Along with the hot flow path technology rapid development, the hot runner valve needle system is used in the injection moulding industry widely, and this system can economize in raw materials, reduce cost, reduce the molding cycle of injecting products and the outward appearance looks that improve product.Yet the hot runner valve needle system designs complicated more than general TOP-TIP, and the processing of the part parts of hot runner valve needle system is not too easy.Therefore, cause the hot runner valve needle system to cost an arm and a leg.
Existing hot runner valve needle system has some shortcomings, the cast gate temperature control defective of chewing such as heat, the screw thread destructible that the needle sealing is tight, heat is chewed etc., and it is quite necessary therefore to solve this type of problem.
The utility model content
The purpose of the utility model is to provide a kind of hot runner valve needle system, and it can be controlled heat preferably and chew the temperature between cast gate and the die, realizes the sealing sealing of good needle, and the screw thread that can effectively avoid heat to chew is destroyed.
For realizing this purpose, the utility model adopts following technical scheme:
A kind of hot runner valve needle system comprises and chews body, is fixed on and chews chewing head and passing the needle of chewing body and chewing head simultaneously of body bottom.Chew and vertically offer passage in the body, channel bottom forms first locating hole of internal diameter greater than the passage internal diameter, and screwed hole is formed on the bottom of first locating hole; First reference column is formed on the top of chewing head, and the bottom of first reference column forms has externally threaded locking post, chews the inside of head and vertically offers through hole, and through hole is positioned at the centre position formation of chewing an above-below direction and chews a pilot hole; Needle comprises valve rod and is formed at the needle lead of stem bottom; Chew head and penetrate in the passage from the bottom of chewing body, first reference column inserts in first locating hole; The locking post is contained in the screwed hole, will chew head with cooperating of screwed hole and chew body fastened to each other through the external screw thread on the locking post; Needle penetrates in the passage from the top of chewing body, and the needle lead inserts and chews in the pilot hole.
Compared with prior art, the utility model possesses following advantage:
Precision-fit through first reference column and first locating hole has realized chewing head and has chewed the precision assembling between the body, has guaranteed axiality between the two; And through the needle lead and chew precision-fit between the pilot hole and realized needle and chewed the precision assembling between the head, finally realized chewing body, chewed the precision assembling between head and the needle three; Then strengthened cooperating between screwed hole and the external screw thread and chewed head and chew the coupling stiffness between the body.
Description of drawings
Fig. 1 is the structure cutaway view according to the hot runner valve needle system of an embodiment of the utility model;
Figure 1A is the partial enlarged drawing of hot runner valve needle system shown in Figure 1;
Figure 1B is and the similar view of Figure 1A, has showed the inside detailed structure of chewing body;
Fig. 2 has showed the detailed structure of chewing head;
Fig. 3 has showed the structure chart of needle;
Fig. 4 has showed that hot runner valve needle system that the utility model provides is applied to the general illustration of TOP-TIP;
Fig. 5 has showed that hot runner valve needle system that the utility model provides is applied to have the structure chart of the TOP-TIP on mould inclined-plane.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
With reference to figure 1-4, comprise according to the hot runner valve needle system 100 of an embodiment of the utility model chew body 6, be fixed on chew body 6 bottoms chew 8 and pass simultaneously and chew body 6 and chew a needle 9 of 8.
Passage 62 is vertically offered in said inside of chewing body 6, and first locating hole 64 of internal diameter greater than the internal diameter of passage 62 formed on the bottom of said passage 62, and screwed hole 66 is then formed on the bottom of said first locating hole 64.
Said needle 9 comprises valve rod 92, be formed at the hanging platform 166 at valve rod 92 tops, be formed at the needle lead 15 of valve rod 92 bottoms and be formed at the needle sealing post 16 of needle lead 15 bottoms.Offer feed chute 14 in the said needle lead 15.
Said needle 9 can be realized the switching of cast gate, and feed chute 14 helps the smooth sealing of needle 9.When needle 9 receives cylinder system 5 active forces; Needle 9 moves downward, and occupies heat gradually and chews lower space, and the melten gel of this part will move up along the feed chute 14 of needle 9; Reduce the resistance that needle 9 moves downward, helped the smooth sealing operation of the needle 9 of hot runner valve needle system 100.
Saidly chew 8 and penetrate in the passage 62 said first reference column, 10 accurate insertions in said first locating hole 64 from the bottom of chewing body 6; And said locking post 84 is contained in the said screwed hole 66, will chew 8 and to chew body 6 fastened to each other with cooperating of screwed hole 66 through the external screw thread 12 of locking on the post 84.
Said needle 9 penetrates in the passage 62 from the top of chewing body 6, and needle lead 15 accurate insertions of needle 9 are chewed in the pilot hole 13.
In above embodiment, the precision-fit through first reference column 10 and first locating hole 64 has realized chewing 8 and chew the precision assembling between the body 6, has guaranteed axiality between the two; And through needle lead 15 and chew precision-fit between the pilot hole 13 and realized needle 9 and chewed the precision assembling between 8, finally realized chewing body 6, chew 8 and needle 9 threes between the precision assembling; Then strengthened cooperating between screwed hole 66 and the external screw thread 12 and chewed 8 and chew the coupling stiffness between the body 6.
Like this; When needle 9 when chewing 8 between the two axis disalignments; Needle lead 15 guaranteed needle 9 cooperating of a pilot hole 13 and chewed 8 both axis coaxles with chewing, and avoided needle sealing post 16 and chewed the friction between 8, the service life of having improved needle 9.Therefore, when chewing 8 job, when impact or 9 pairs of the needles that runs into melten gel chewed a bump of 8, chew 8 and can not destroyed, and then strengthened and chew body 6 and the interchangeability of chewing core, reduced maintenance cost with the matching thread of chewing body 6.
During work, TOP-TIP master purt is chewed 1 and is joined with the injection machine injection mouth, and melten gel is chewed 1 runner by main purt and got into the TOP-TIP sprue, chews through heat melten gel is injected mold cavity.In injection process, certain pressure and instability are arranged in the mold cavity, this pressure produces certain impact to chewing 8, and has higher temperature during hot flow path work, chew body 6 with chew 8 all can dilatancy.Owing to chew 8 and chew above-mentioned precision-fit structure between the body 6 (precision-fit between first reference column and first locating hole); Therefore guaranteed to chew 8 and chew the axiality between the body 6; Received stronger external force effect even chew 8, chew 8 and the threaded engagement of chewing between the body 6 still can remain intact.
Hot flow path has good mobility for guaranteeing melten gel, chew body 6, chew 8 higher temperature is all arranged, and mold temperature is relatively low, and there is the transmission of heat in both on its mating surface.For avoiding the transmission of a large amount of heats, it is less to chew 8 a diameter D place mating surface, has reduced heat transfer area, has reduced the thermal loss of TOP-TIP.
When TOP-TIP need be closed melten gel, cylinder system 5 will make needle 9 move downward.Needle 9 moves to when chewing bottom, needle spigot surface 15 with chew a spigot surface 13 and cooperate, guaranteed needle sealing face 16 and the axiality of chewing a sealing face 17, avoid the needle end and chew 8 collision, damage needle sealing face.Needle continues to move down, and chews 8 an interior part melten gel and will reduce the resistance that needle 9 moves downward along moving on the needle feed chute 14, has reduced the active force of cylinder to needle 9, helps the smooth sealing of needle.
Preferably, second locating hole 68 of internal diameter greater than first locating hole 64 formed on the bottom of said screwed hole 66; Second reference column 11 is formed on the bottom of said locking post 84; Said second reference column, 11 accurate insertions in said second locating hole 68.Through both precision-fit, further realized chewing 8 and chew the assembly precision between the body 6.
In addition, chew 8 smaller with the external diameter of the end of die cooperation place.Like this, when hot flow path in when work, be the melten gel temperature that guarantees that hot flow path is inner, the periphery of chewing body 6 is wound with heating circle 7, and is higher thereby heat is chewed temperature, but mold temperature is relatively low.Chewing of this TOP-TIP is 8 little with the diameter of mould cooperation place, has reduced both cooperation areas, has reduced heat transmission between the two, has reduced the thermal loss that heat is chewed, and has avoided heat to chew a large amount of heats and has been passed to mould, and product is buried hidden danger of quality.
In addition, said length of chewing a cold runner (through hole 82 is positioned at a section that chews 8 bottom) of 8 can be pressed the certain-length classification with it as required, like 5mm one specification, is convenient to realize standardization, enhances productivity.When design needs chewing of the different cold runner length of same model, can get a long slightly head of chewing and change, thereby practice thrift the production time according to classification.
Fig. 5 has showed that hot runner valve needle system that the utility model provides is applied to have the structure chart of the TOP-TIP on mould inclined-plane.In the figure, chew 8 and can be used for the hot runner valve needle system that the inclined-plane advances glue.When cast gate was set on the inclined-plane, this chews the core bottom had one section cold runner, can require that this is chewed the core cold runner L of portion according to the inclined-plane and be processed into the shape that matches with the mould inclined-plane, had enlarged this type of and had chewed the scope of application of head.
Therefore; The foregoing description is the utility model preferred implementation; But not merely be restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify, and all should be the substitute mode of equivalence, all is included within the protection domain of the utility model.
Claims (5)
1. hot runner valve needle system comprises and chews body, is fixed on and chews chewing head and passing the needle of chewing body and chewing head simultaneously of body bottom, it is characterized in that:
Said chewing vertically offered passage in the body, channel bottom forms first locating hole of internal diameter greater than the passage internal diameter, and screwed hole is formed on the bottom of first locating hole;
First reference column is formed on said top of chewing head, and the bottom of said first reference column forms has externally threaded locking post, and through hole is vertically offered in said inside of chewing head, and said through hole is positioned at the centre position formation of chewing an above-below direction and chews a pilot hole;
Said needle comprises valve rod and is formed at the needle lead of stem bottom;
The said head of chewing penetrates in the passage from the bottom of chewing body, and said first reference column inserts in said first locating hole; Said locking post is contained in the said screwed hole, will chew head with cooperating of screwed hole and chew body fastened to each other through the external screw thread on the locking post; Said needle penetrates in the passage from the top of chewing body, and the needle lead inserts and chews in the pilot hole.
2. hot runner valve needle system according to claim 1 is characterized in that: second locating hole of internal diameter greater than first locating hole formed on the bottom of said screwed hole; Second reference column is formed on the bottom of said locking post; And said second reference column inserts in said second locating hole.
3. hot runner valve needle system according to claim 2 is characterized in that: the said head of chewing further comprises being positioned at and chews pilot hole bottom and internal diameter less than a sealing hole of chewing of chewing a pilot hole.
4. hot runner valve needle system according to claim 3 is characterized in that: said needle further comprises the hanging platform that is formed at the valve rod top.
5. hot runner valve needle system according to claim 1 is characterized in that: offer feed chute in the said needle lead; Said needle further comprises the needle sealing post that is formed at needle lead bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220226702 CN202607980U (en) | 2012-05-18 | 2012-05-18 | Hot runner valve needle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220226702 CN202607980U (en) | 2012-05-18 | 2012-05-18 | Hot runner valve needle system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202607980U true CN202607980U (en) | 2012-12-19 |
Family
ID=47341711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220226702 Expired - Fee Related CN202607980U (en) | 2012-05-18 | 2012-05-18 | Hot runner valve needle system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202607980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496108A (en) * | 2013-09-29 | 2014-01-08 | 苏州好特斯模具有限公司 | Split type hot nozzle lining assembly |
-
2012
- 2012-05-18 CN CN 201220226702 patent/CN202607980U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496108A (en) * | 2013-09-29 | 2014-01-08 | 苏州好特斯模具有限公司 | Split type hot nozzle lining assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN MOULD-TIP INJECTION TECHNOLOGY LIMITED Free format text: FORMER NAME: MOULD-TIP INJECTION TECHNOLOGY (SHENZHEN) LIMITED |
|
| CP03 | Change of name, title or address |
Address after: 518132 Guangdong province Shenzhen Guangming New District Gongming office. The community Fifth Industrial Zone sixth, Sixth Industrial District sixteenth Building 1 floor 3 floor Patentee after: Mai Shidefu Science and Technology Co., Ltd. of Shenzhen Address before: 518132 Guangdong province Shenzhen Guangming New District Gongming office. The community Sixth Industrial District sixteenth Building 1 floor, 2 floor, A District, 3 floor Patentee before: Mould-Tip (Shenzhen) Injection Technology Limited |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20200518 |