CN103252874A - Hot runner device with valve pin adjustment structure - Google Patents
Hot runner device with valve pin adjustment structure Download PDFInfo
- Publication number
- CN103252874A CN103252874A CN2012100415157A CN201210041515A CN103252874A CN 103252874 A CN103252874 A CN 103252874A CN 2012100415157 A CN2012100415157 A CN 2012100415157A CN 201210041515 A CN201210041515 A CN 201210041515A CN 103252874 A CN103252874 A CN 103252874A
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- needle
- hot runner
- runner device
- accommodation space
- piston
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Abstract
The invention relates to a hot runner device with a valve pin adjustment structure. With the valve pin adjustment structure, valve pin length can be adjusted. The valve pin adjustment structure is applied on a hot runner device. The hot runner device with the valve pin adjustment structure comprises a cylinder body, a valve body, and a hot runner main body. The device is characterized in that an accommodation space is arranged in the cylinder body; a piston is arranged in the accommodation space; a valve pin seat is arranged in the piston; an inner thread is arranged in the valve pin seat; a valve pin is arranged on one end of the valve body; an adjustment body is arranged on the other end of the valve body; a first outer thread is arranged on the adjustment body; the first outer thread is threaded on the inner thread; the hot runner main body is provided with a first flow channel, a second flow channel, a material inlet port, and a material outlet port; the material inlet port communicates with the first flow channel; the first flow channel communicates with the second flow channel; the material outlet port is arranged on the second flow channel; and the valve pin is positioned in the second flow channel and can move in the second flow channel.
Description
Technical field
The present invention relates to a kind of hot runner device that needle is adjusted structure that has, relate in particular to a kind of hot runner device of adjustable valve pin length.
Background technology
Existing needle valve type hot runner ejection formation, be to utilize material pipe heating of plastic, after the plastics viscosity is descended, via the shearing effect between screw rod rotation and material pipe, softening thermoplastic materials is injected mould, in case plastics are full of mould, namely enter pressurize, cool off and eject, finish a production cycle, as TaiWan, China M306619 and M353823 patent.
Through looking into, general thermoplastic materials as shown in Figure 1 and Figure 2, after plastics are full of mould, utilizes pneumatic cylinder 120 to drive the hole 140 that needle 110 in these pistons 100 is crammed mould 130 downwards in injection process, continues softening thermoplastic materials is injected mould stopping; But, mould 130 and hole 140 have manufacturing tolerance, build-up tolerance, abrasion error etc., aforementioned tolerance is or/and error allows the needle 110 that driven by pneumatic cylinder 120, can't cram the hole 140 of mould 130 really, pour into plastics thereby the outflow of mould 130, and if strengthen the hole 140 that the driving force of pneumatic cylinder 120 is crammed mould 130, then can oppress and make needle 110 hole 140 of collision mould 130 downwards, cause hole 140 to produce slight crack 150, mold damage 130.
According to above-mentioned, if needle 110 not tool adjust the length function, then can reduce the quality of production, even mold damage.
Summary of the invention
In view of the shortcoming of aforementioned background art, the invention provides a kind of needle and adjust structure, design adjustable valve pin length by this and the needle that is applied on the hot runner device is adjusted structure, solve the shortcoming that existing hot runner needle is adjusted difficulty.
In order to achieve the above object, the invention provides a kind of hot runner device that needle is adjusted structure that has, this needle adjustment structure can be adjusted needle length and be applied on the hot runner device, this hot runner device with needle adjustment structure comprises: a cylinder body, a valve body and a hot runner main body is characterized in that:
Be provided with an accommodation space in this cylinder body, be provided with a piston in this accommodation space, establish a needle seat in this piston, be provided with internal thread in this needle seat;
This valve body one end is provided with a needle, and this valve body other end is provided with one and adjusts body, and this accent is provided with first external screw thread on the whole, and this first external thread spiro fastening is on this internal thread;
This hot runner main body, be provided with a first flow, one second runner, a charging aperture and a discharging opening, wherein: this charging aperture is communicated with this first flow, this first flow is communicated with this second runner, this second runner is provided with this discharging opening, this needle is positioned at this second runner, and can move in this second runner.By rotating this adjustment body, make this adjustment body spiral shell on this needle seat moving, drive this needle displacement.
In addition, the invention provides a pushing body, this pushing body pushes this adjustment body; By this, prevent that this adjustment body is loosening, and then prevent this needle improper shift.
In addition, pushing body provided by the invention is provided with second external screw thread, and this second external screw thread is fixed on this internal thread; By this, spiral shell this pushing body pushing is admittedly adjusted body, prevents from producing when this pushing body from pushing this adjustment body and becomes flexible, and avoids this adjustment body rotation, and then prevents this needle improper shift.
Hot runner device with needle adjustment structure of the present invention has one or more following advantages:
1, to adjust the hot runner device of structure be to adjust the position with screw-in version for tool needle of the present invention, adjusts needle length, and this mechanical type method of adjustment is simple in structure and for determining structure, the puzzlement of nondeterministic statement or control can not occur.
2, the hot runner device with needle adjustment structure of the present invention therefore along with suitable screw thread is selected for use, can promote the adjustment precision for adjusting the position with screw-in version.
3, the hot runner device with needle adjustment structure of the present invention can be used for air pressure driving or drive device for hydraulic, the compatibility of tool height and applicability.
4, the hot runner device with needle adjustment structure of the present invention can be provided with the pushing body, utilizes the pushing of pushing body to adjust body, prevents the needle improper shift.
5, the hot runner device with needle adjustment structure of the present invention, adjustable valve pin length are reached lifting machining accuracy, reduction built-up time, saving maintenance cost, increase productivity with the die length deviation on the compensation Jet forming machine.
Fig. 1 is the known needle valve type hot runner device that can not adjust needle length, discloses the view that this needle can't be crammed the mould hole among the figure.
Fig. 2 is the known needle valve type hot runner device that can not adjust needle length, and after the announcement needle collided the mould hole among the figure, the view of slight crack appearred in hole.
Fig. 3 is the front view with hot runner device of needle adjustment structure of the present invention, discloses the annexation of each assembly in this front view, also discloses first passage and second channel in this front view.
Fig. 4 is the right side view with hot runner device of needle adjustment structure of the present invention, discloses the annexation of each assembly in this right side view.
Fig. 5 is the partial enlarged view of Fig. 4, discloses the annexation of each assembly in this view.
Fig. 6 has a schematic diagram of needle seat that needle is adjusted the hot runner device of structure for of the present invention.
Fig. 7 adjusts the structural upright cutaway view for the needle with hot runner device valve body of needle adjustment structure of the present invention.
Fig. 8 is the schematic diagram that needle is adjusted the valve body in the hot runner device of structure and pushed body that has of the present invention.
Fig. 9 has needle and adjusts the adjustment body schematic diagram that changes of spiral shell not in the hot runner device of structure for of the present invention.
Figure 10 discloses spiral shell modulation integral body for the adjustment body spiral shell in the needle seat with hot runner device of needle adjustment structure of the present invention changes the schematic diagram that the back produces the needle displacement in this schematic diagram, this adjustment body spiral shell on the needle seat is moving, drives the needle displacement.
Figure 11 adjusts the schematic diagram of body for the pushing body pushing with hot runner device of needle adjustment structure of the present invention, disclose solid this pushing body pushing of spiral shell in this schematic diagram and adjust body, prevent from producing when this pushing body from pushing this adjustment body loosening, avoid this adjustment body rotation, and then prevent this needle improper shift.
Figure 12 drives the schematic diagram that needle rises for the piston with hot runner device of needle adjustment structure of the present invention, disclose in this schematic diagram, guide rod is restrained motion in guide groove, gas as shown by arrows, gas imports cylinder interior by second channel, ejector ram and needle move up, and the upper gas of piston is discharged by first passage.
Figure 13 drives the schematic diagram that needle descends for the piston with hot runner device of needle adjustment structure of the present invention, disclose in this schematic diagram, guide rod is restrained motion in guide groove, gas as shown by arrows, gas imports cylinder interior by first passage, ejector ram and needle move down, and the lower gas of piston is discharged by second channel.
Description of drawings
Fig. 1 is the known needle valve type hot runner device that can not adjust needle length, discloses the view that this needle can't be crammed the mould hole among the figure;
Fig. 2 is the known needle valve type hot runner device that can not adjust needle length, and after the announcement needle collided the mould hole among the figure, the view of slight crack appearred in hole;
Fig. 3 is the front view with hot runner device of needle adjustment structure of the present invention, discloses the annexation of each assembly in this front view, also discloses first passage and second channel in this front view;
Fig. 4 is the right side view with hot runner device of needle adjustment structure of the present invention, discloses the annexation of each assembly in this right side view;
The 5th figure is the partial enlarged view of Fig. 4, discloses the annexation of each assembly in this view;
Fig. 6 has a schematic diagram of needle seat that needle is adjusted the hot runner device of structure for of the present invention;
Fig. 7 adjusts the structural upright cutaway view for the needle with hot runner device valve body of needle adjustment structure of the present invention;
Fig. 8 is the schematic diagram that needle is adjusted the valve body in the hot runner device of structure and pushed body that has of the present invention;
Fig. 9 has needle and adjusts the adjustment body schematic diagram that changes of spiral shell not in the hot runner device of structure for of the present invention;
Figure 10 changes the schematic diagram that the back produces the needle displacement for the adjustment body spiral shell in the needle seat with hot runner device of needle adjustment structure of the present invention;
Figure 11 adjusts the schematic diagram of body for the pushing body pushing with hot runner device of needle adjustment structure of the present invention;
Figure 12 drives the schematic diagram that needle rises for the piston with hot runner device of needle adjustment structure of the present invention;
Figure 13 drives the schematic diagram that needle descends for the piston with hot runner device of needle adjustment structure of the present invention.
The primary clustering symbol description
10 cylinder bodies
11 accommodation spaces
111 first passages
112 second channels
12 pistons
13 needle seats
131 internal threads
20 valve bodies
21 first grooves
211 first hexagonal groove
22 needles
221 displacements
23 adjust body
231 first external screw threads
30 hot runner main bodys
31 charging apertures
311 first flows
32 discharging openings
321 second runners
40 pushing bodies
41 second grooves
411 second hexagonal groove
42 second external screw threads
50 guide rods
60 guide grooves
100 pistons
110 needles
120 pneumatic cylinders
130 moulds
140 holes
150 slight cracks
The specific embodiment
The present invention can fully be understood by following embodiment explanation, make those skilled in the art to finish according to this invention, yet enforcement of the present invention is not can be limited it by the following example to implement kenel.
Extremely shown in Figure 13 as Fig. 3.The present invention is a kind of hot runner device with needle adjustment structure, this needle is adjusted structure and is adjustable valve pin length and is applied on the hot runner device, this hot runner device with needle adjustment structure comprises: a cylinder body 10 and a valve body 20, wherein: be provided with an accommodation space 11 in this cylinder body 10, be provided with a piston 12 in this accommodation space 11, establish a needle seat 13 in this piston 12, be provided with internal thread 131 in this needle seat 13; These valve body 20 1 ends are provided with a needle 22, and these valve body 20 other ends are provided with one and adjust body 23, and this adjustment body 23 is provided with one first external screw thread 231, and this first external screw thread 231 is screwed together on this internal thread 131; By rotating this adjustment body 23, make this adjustment body 23 spiral shell on this needle seat 13 moving, drive this needle displacement 221.
In addition, among this embodiment, this adjustment body 23 is provided with one first groove 21; By this, can an instrument (disclosing among the figure) do not stretched in this first groove 21, utilize this instrument (not disclosing among the figure) to rotate this adjustment body 23, make this adjustment body 23 spiral shell on this needle seat 13 moving, drive this needle displacement 221.
In addition, among this embodiment, this first groove 21 is first hexagonal groove 211; By this, can a die nut (disclosing among the figure) do not stretched in this first hexagonal groove 211, utilize this die nut (not disclosing among the figure) to rotate this adjustment body 23, make this adjustment body 23 spiral shell on this needle seat 13 moving, drive this needle displacement 221.
In addition, among this embodiment, these adjustment body 23 tops are provided with a pushing body 40, and this adjusts body 23 this pushing body 40 pushing, by this, prevent that this adjustments body 23 from rotating and drive this needle 22 improper shifts.
In addition, among this embodiment, this pushing body 40 is provided with second external screw thread 42, and this second external screw thread 42 is fixed on this internal thread 131; By this, this adjusts body 23 solid these pushing body 40 pushings of spiral shell, and it is loosening to prevent that this pushing body 40 from producing when pushing these adjustment bodies 23, avoids this adjustment body 23 rotations, and then prevents this needle 22 improper shifts.
In addition, among this embodiment, this pushing body 40 is provided with one second groove 41; By this, can an instrument (disclosing among the figure) do not stretched in this second groove 41, utilize this instrument (not disclosing among the figure) to rotate this pushing body 40, this adjusts body 23 solid these pushing body 40 pushings of spiral shell, produce loosening when preventing these pushing body 40 these adjustment bodies 23 of pushing, avoid this adjustment body 23 rotations, and then prevent this needle 22 improper shifts.
In addition, among this embodiment, this second groove 41 is one second hexagonal groove 411; By this, can a die nut (disclosing among the figure) do not stretched in this second hexagonal groove 411, utilize this die nut (not disclosing among the figure) to rotate this pushing body 40, this adjusts body 23 solid these pushing body 40 pushings of spiral shell, produce loosening when preventing these pushing body 40 these adjustment bodies 23 of pushing, avoid this adjustment body 23 rotations, and then prevent this needle 22 improper shifts.
In addition, among this embodiment, this piston 12 is provided with a guide rod 50, is provided with a guide groove 60 in this accommodation space 11, and this accommodation space 11 is provided with a first passage 111 and a second channel 112 of external connection; By this, the restrained motion in this guide groove 60 of this guide rod 50 utilizes this first passage 111 and this second channel 112, alternately imports gas or discharges gas, drives this piston 12 and moves back and forth at this accommodation space 11, drives this needle sealing or opens this discharging opening.
In addition, among this embodiment, this hot runner device with needle adjustment structure also comprises: a hot runner main body 30, wherein: this hot runner main body 30, be provided with a first flow 311, one second runner 321, a charging aperture 31 and a discharging opening 32, wherein: this charging aperture 31 is communicated with this first flow 311, this first flow 311 is communicated with this second runner 321, this second runner 321 is provided with this discharging opening 32, and this needle 22 is positioned at this second runner 321, and can move in this second runner 321; By this, adjust structure in conjunction with this hot runner main body 30 and this needle.
Though the present invention is disclosed with above-mentioned preferred embodiment; but it is not in order to limit scope of the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; can do a little change and retouching, so the claim protection domain that protection scope of the present invention is worked as with this application is defined.
Claims (10)
1. one kind has the hot runner device that needle is adjusted structure, this needle adjustment structure can be adjusted needle length and be applied on the hot runner device, this hot runner device with needle adjustment structure comprises: a cylinder body, a valve body and a hot runner main body is characterized in that:
Be provided with an accommodation space in this cylinder body, be provided with a piston in this accommodation space, establish a needle seat in this piston, be provided with internal thread in this needle seat;
This valve body one end is provided with a needle, and this valve body other end is provided with one and adjusts body, and this accent is provided with first external screw thread on the whole, and this first external thread spiro fastening is on this internal thread;
This hot runner main body, be provided with a first flow, one second runner, a charging aperture and a discharging opening, wherein: this charging aperture is communicated with this first flow, this first flow is communicated with this second runner, this second runner is provided with this discharging opening, this needle is positioned at this second runner, and can move in this second runner.
2. according to claim 1 have a hot runner device that needle is adjusted structure, and it is characterized in that: this accent is provided with one first groove on the whole.
3. according to claim 2 have a hot runner device that needle is adjusted structure, and it is characterized in that: this first groove is first hexagonal groove.
4. describedly have hot runner devices that needle is adjusted structure according to claim 1,2 or 3, it is characterized in that: this adjustments body top is provided with a pushing body, and this pushing body pushes this adjustment body, prevents that this adjustment body from rotating and drive this needle displacement.
5. according to claim 4 have a hot runner device that needle is adjusted structure, and it is characterized in that: this pushing body is provided with second external screw thread, and this second external screw thread is fixed on this internal thread; By this, solid this pushing body of spiral shell pushes this adjustment body.
6. according to claim 5 have a hot runner device that needle is adjusted structure, and it is characterized in that: this piston is provided with a guide rod, is provided with a guide groove in this accommodation space, and this accommodation space is provided with a first passage and a second channel of external connection; The restrained motion in this guide groove of this guide rod utilizes this first passage and this second channel, alternately imports gas or discharges gas, drives this piston and moves back and forth at this accommodation space.
7. according to claim 5 have a hot runner device that needle is adjusted structure, and it is characterized in that: this pushing body is provided with one second groove.
8. according to claim 7 have a hot runner device that needle is adjusted structure, and it is characterized in that: this piston is provided with a guide rod, is provided with a guide groove in this accommodation space, and this accommodation space is provided with a first passage and a second channel of external connection; The restrained motion in this guide groove of this guide rod utilizes this first passage and this second channel, alternately imports gas or discharges gas, drives this piston and moves back and forth at this accommodation space.
9. according to claim 7 have a hot runner device that needle is adjusted structure, and it is characterized in that: this second groove is one second hexagonal groove.
10. according to claim 9 have a hot runner device that needle is adjusted structure, and it is characterized in that: this piston is provided with a guide rod, is provided with a guide groove in this accommodation space, and this accommodation space is provided with one of external connection first passage and a second channel; The restrained motion in this guide groove of this guide rod utilizes this first passage and this second channel, alternately imports gas or discharges gas, drives this piston and moves back and forth at this accommodation space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100415157A CN103252874A (en) | 2012-02-21 | 2012-02-21 | Hot runner device with valve pin adjustment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100415157A CN103252874A (en) | 2012-02-21 | 2012-02-21 | Hot runner device with valve pin adjustment structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103252874A true CN103252874A (en) | 2013-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100415157A Pending CN103252874A (en) | 2012-02-21 | 2012-02-21 | Hot runner device with valve pin adjustment structure |
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| Country | Link |
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| CN (1) | CN103252874A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685428A (en) * | 2016-08-05 | 2018-02-13 | 柳道万和(苏州)热流道***有限公司 | Needle length adjustment formula drive cylinder and its adjusting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040256767A1 (en) * | 2003-06-23 | 2004-12-23 | Panos Trakas | Adjustable valve pin assembly and method |
| US20060065991A1 (en) * | 2004-09-29 | 2006-03-30 | Mold-Masters Limited | Adjustable valve pin actuator for an injection molding apparatus |
| CN200970878Y (en) * | 2006-09-22 | 2007-11-07 | 徐正立 | Improved of needle valve type thermal sprue cylinder piston structure |
| WO2011067800A1 (en) * | 2009-12-02 | 2011-06-09 | Thermoplay S.P.A. | Closure assembly for an injection unit of plastic material with micrometrical regulation of the closure rod, and corresponding device for regulating micrometrically and fixing a threaded element |
| CN202498693U (en) * | 2012-02-21 | 2012-10-24 | 模懋实业股份有限公司 | Hot runner device with valve needle adjusting structure |
-
2012
- 2012-02-21 CN CN2012100415157A patent/CN103252874A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040256767A1 (en) * | 2003-06-23 | 2004-12-23 | Panos Trakas | Adjustable valve pin assembly and method |
| US20060065991A1 (en) * | 2004-09-29 | 2006-03-30 | Mold-Masters Limited | Adjustable valve pin actuator for an injection molding apparatus |
| CN200970878Y (en) * | 2006-09-22 | 2007-11-07 | 徐正立 | Improved of needle valve type thermal sprue cylinder piston structure |
| WO2011067800A1 (en) * | 2009-12-02 | 2011-06-09 | Thermoplay S.P.A. | Closure assembly for an injection unit of plastic material with micrometrical regulation of the closure rod, and corresponding device for regulating micrometrically and fixing a threaded element |
| CN202498693U (en) * | 2012-02-21 | 2012-10-24 | 模懋实业股份有限公司 | Hot runner device with valve needle adjusting structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685428A (en) * | 2016-08-05 | 2018-02-13 | 柳道万和(苏州)热流道***有限公司 | Needle length adjustment formula drive cylinder and its adjusting method |
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Application publication date: 20130821 |