CN202656421U - Self-locking guide sleeve structure of hot runner valve needle - Google Patents
Self-locking guide sleeve structure of hot runner valve needle Download PDFInfo
- Publication number
- CN202656421U CN202656421U CN 201220228228 CN201220228228U CN202656421U CN 202656421 U CN202656421 U CN 202656421U CN 201220228228 CN201220228228 CN 201220228228 CN 201220228228 U CN201220228228 U CN 201220228228U CN 202656421 U CN202656421 U CN 202656421U
- Authority
- CN
- China
- Prior art keywords
- needle guide
- guide pin
- pin bushing
- guide sleeve
- valve needle
- 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.)
- Expired - Fee Related
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a self-locking guide sleeve structure of a hot runner valve needle. The guide sleeve structure comprises a valve needle guide sleeve. The valve needle guide sleeve is arranged in a spreader plate, a section of the valve needle guide sleeve is big-end-down and in a protruding structure, the upper portion is embedded into a valve needle guide sleeve gland, the outer wall at the lower end of the valve needle guide sleeve gland is in threaded connection with the inner wall of the spreader plate, and the upper end of the valve needle guide sleeve gland is embedded into a valve needle guide sleeve clocking block which is fixed with the spreader plate through screws, so that the valve needle guide sleeve and the valve needle guide sleeve gland are fastened in the spreader plate; and a seal copper ring is arranged between the bottom surface of the valve needle guide sleeve and the spreader plate. According to the guide sleeve structure, mold machining tolerance is not needed to be considered completely, so that gum leakage rate of hot runners is reduced greatly, the processing difficulty of the hot runners is decreased, and the processing cost of clients is reduced.
Description
[technical field]
The utility model relates to a kind of injection forming mold hot flow path, particularly a kind of self-locking valve needle of hot runner guide sleeve structure.
[background technology]
TOP-TIP is a kind of plastic mould parts at present commonly used, and it is with respect to common flow passage, have simplified control, molding cycle short, save material, the plurality of advantages such as the goods cost is low, product quality is high.The needle guide pin bushing sealing that hot flow path company in the market adopts generally is to utilize client's mold panel to compress the needle guide pin bushing to prevent that the needle guide pin bushing is injection molding pressure and goes out, this design concept is high especially to client's processing mould plate thickness tolerance, when client's template thickness following situations will not occur in the design tolerance again, first thickness of slab is lower than design tolerance, and the needle guide pin bushing will be stuck to losing efficacy to sealing with the needle guide pin bushing; It two is that thickness of slab is higher than design tolerance, and the needle guide pin bushing will be injection molding pressure and be against to cause leaking and pay.
[summary of the invention]
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of self-locking valve needle of hot runner guide sleeve structure that injection mold hot runner leaks glue that solves is provided.
The purpose of this utility model is achieved in that it comprises the needle guide pin bushing, its improvements are: described needle guide pin bushing is installed in the flow distribution plate, its section is the up-small and down-big convex structure that is, top embeds in the needle guide pin bushing gland, needle guide pin bushing gland lower end outer wall is connected with the flow distribution plate inner thread, the upper end of needle guide pin bushing gland embeds in the needle guide pin bushing latch segment, be screwed between needle guide pin bushing latch segment and the flow distribution plate, so that needle guide pin bushing and needle guide pin bushing gland are lock onto in the flow distribution plate; Be equipped with a plastic passages that communicates on the central shaft of described needle guide pin bushing, needle guide pin bushing gland and needle guide pin bushing latch segment, described flow distribution plate inside axially is provided with a discharging channel along the needle guide pin bushing, discharging channel is connected with plastic passages, flow distribution plate inside also is provided with a feed channel, feed channel is along the radially setting of needle guide pin bushing, be formed with a charging aperture on sidewall, feed channel is communicated with discharging channel; Be provided with sealing ring between described needle guide pin bushing bottom outer wall and the flow distribution plate;
Preferably, the sealing ring between described needle guide pin bushing bottom outer wall and the flow distribution plate is a copper ring;
Preferably, described needle guide pin bushing gland upper end formation one outer wall is orthohexagonal bayonet socket.
Compared with prior art, the beneficial effects of the utility model are: the sealing copper ring that arranges between needle guide pin bushing and flow distribution plate, utilize the variable characteristic of copper ring to reach the purpose of sealing between needle guide pin bushing and the flow distribution plate; Needle guide pin bushing gland is fixedly connected with that with the flow distribution plate screw thread needle guide pin bushing is pressed solidly in flow distribution plate, and has the purpose that overcomes injection pressure; Needle guide pin bushing latch segment is screwed on flow distribution plate, and needle guide pin bushing gland and needle guide pin bushing are lock onto in the flow distribution plate, prevents the phenomenon that is threaded and lost efficacy and caused leaking glue between needle guide pin bushing gland and the flow distribution plate; Guide sleeve structure of the present utility model does not need to consider the machining tolerance of mould fully, not only greatly reduces the probability that hot flow path leaks glue, and has reduced the difficulty of processing of hot flow path, has reduced client's processing cost.
[description of drawings]
Accompanying drawing is structural representation of the present utility model.
Among the figure: 1, flow distribution plate; 2, sealing copper ring; 3, needle guide pin bushing; 4, needle guide pin bushing gland; 5, needle guide pin bushing latch segment; 6, M8 hexagonal socket head cap screw; 7, plastic passages; 11, guide pin bushing installing hole; 12, charging aperture; 41, bayonet socket.
[specific embodiment]
Below in conjunction with the drawings and the specific embodiments the utility model is described further:
As shown in drawings, self-locking valve needle of hot runner guide sleeve structure of the present utility model, it comprises needle guide pin bushing 3, described needle guide pin bushing 3 is installed in the flow distribution plate 1, flow distribution plate 1 upper surface has a guide pin bushing installing hole 11 to lower recess, needle guide pin bushing 3 is positioned in the guide pin bushing installing hole 11, is provided with sealing copper ring 2 between guide pin bushing installing hole 11 inwalls and the needle guide pin bushing 3 bottom outer walls; Needle guide pin bushing 3 sections are the up-small and down-big convex structure that is, what upper diameter was less is partially submerged in the needle guide pin bushing gland 4, described needle guide pin bushing gland 4 lower end outer wall outer walls are connected with guide pin bushing installing hole 11 inner threads of flow distribution plate 1, the upper end of needle guide pin bushing gland 4 forms the bayonet socket 41 that an outer wall is regular polygon, spanner easy to use so can not slide when needle guide pin bushing gland 4 is threadedly connected to flow distribution plate 1, convenient operation is so that being connected between needle guide pin bushing gland 4 and the flow distribution plate 1 is more firm; The bayonet socket 41 of needle guide pin bushing gland 4 embeds in the bottom of needle guide pin bushing latch segment 5, needle guide pin bushing latch segment 5 is fixed on the flow distribution plate 1 by 4 equally distributed M8 hexagonal socket head cap screws 6, and needle guide pin bushing gland 4 and needle guide pin bushing 3 are lock onto in the guide pin bushing installing hole 11 of flow distribution plate 1; Be equipped with a plastic passages that communicates 7 on the central shaft of described needle guide pin bushing 3, needle guide pin bushing gland 4 and needle guide pin bushing latch segment 5, described flow distribution plate 1 inside axially is provided with a discharging channel along needle guide pin bushing 3, discharging channel is connected with plastic passages 7, flow distribution plate 1 inside also is provided with a feed channel, feed channel is along the radially setting of needle guide pin bushing, be formed with a charging aperture 12 on sidewall, feed channel is communicated with discharging channel.
The according to the above description announcement of book and instruction, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the specific embodiment that discloses and describe above the utility model is not limited to also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this specification, these terms do not consist of any restriction to the utility model just for convenience of description.
Claims (3)
1. self-locking valve needle of hot runner guide sleeve structure, comprise the needle guide pin bushing, it is characterized in that: described needle guide pin bushing is installed in the flow distribution plate, its section is the up-small and down-big convex structure that is, top embeds in the needle guide pin bushing gland, and needle guide pin bushing gland lower end outer wall is connected with the flow distribution plate inner thread, and the upper end of needle guide pin bushing gland embeds in the needle guide pin bushing latch segment, be screwed between needle guide pin bushing latch segment and the flow distribution plate, so that needle guide pin bushing and needle guide pin bushing gland are lock onto in the flow distribution plate; Be equipped with a plastic passages that communicates on the central shaft of described needle guide pin bushing, needle guide pin bushing gland and needle guide pin bushing latch segment, described flow distribution plate inside axially is provided with a discharging channel along the needle guide pin bushing, discharging channel is connected with plastic passages, flow distribution plate inside also is provided with a feed channel, feed channel is along the radially setting of needle guide pin bushing, be formed with a charging aperture on sidewall, feed channel is communicated with discharging channel; Be provided with sealing ring between described needle guide pin bushing bottom outer wall and the flow distribution plate.
2. self-locking valve needle of hot runner guide sleeve structure according to claim 1, it is characterized in that: the sealing ring between described needle guide pin bushing bottom outer wall and the flow distribution plate is a copper ring.
3. self-locking valve needle of hot runner guide sleeve structure according to claim 1 is characterized in that: it is orthohexagonal bayonet socket that described needle guide pin bushing gland upper end forms an outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220228228 CN202656421U (en) | 2012-05-18 | 2012-05-18 | Self-locking guide sleeve structure of hot runner valve needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220228228 CN202656421U (en) | 2012-05-18 | 2012-05-18 | Self-locking guide sleeve structure of hot runner valve needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202656421U true CN202656421U (en) | 2013-01-09 |
Family
ID=47451352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220228228 Expired - Fee Related CN202656421U (en) | 2012-05-18 | 2012-05-18 | Self-locking guide sleeve structure of hot runner valve needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202656421U (en) |
-
2012
- 2012-05-18 CN CN 201220228228 patent/CN202656421U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20160518 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |