CN209141332U - Hot runner system - Google Patents
Hot runner system Download PDFInfo
- Publication number
- CN209141332U CN209141332U CN201821704768.7U CN201821704768U CN209141332U CN 209141332 U CN209141332 U CN 209141332U CN 201821704768 U CN201821704768 U CN 201821704768U CN 209141332 U CN209141332 U CN 209141332U
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- cylinder body
- center
- flow distribution
- hot runner
- runner system
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Abstract
The utility model discloses a kind of hot runner system, the hot runner system includes solid plate, cylinder body, the piston that is set in the cylinder and drivingly can longitudinally be moved, it is fixedly installed on the needle of the piston, and the flow distribution plate equipped with runner, the flow distribution plate is equipped with hot mouth component, the hot mouth component has center point, and the needle extends in the hot mouth component, wherein, the cylinder body is fixedly connected on the flow distribution plate, and cylinder body free gap is equipped between the cylinder body and the solid plate on the transverse direction perpendicular to the longitudinal axis, after the flow distribution plate is heated, the cylinder body moves the solid plate with the expansion phase of the flow distribution plate in the cylinder body free gap, the needle and the center point are concentric always.The utility model makes cylinder body no matter under room temperature or heated condition, and needle is concentric with center point always, is easily installed, to avoid needle stuck.
Description
Technical field
The utility model relates to hot runner mould field more particularly to a kind of hot runner system.
Background technique
It is at present that hot runner plastic injection mould passes through for common die in the injection mold that Injection Industry generallys use
The plastic cement products quality of hot runner system injection molding is higher, and hot runner system has saving raw material, improves production efficiency, automation
The advantages that degree is high.
As shown in Figures 1 to 4, in current hot-runner pin valve system, the top clamping plate 2 in cylinder body 1 and mold cooperates, and
Gapless between cylinder body 1 and top clamping plate 2, cylinder body 1 are fixed on top clamping plate 2, but because top clamping plate 2 and flow distribution plate 3
Material is different, and temperature is different, and when heated, top clamping plate 2 is different with the swell increment of flow distribution plate 3, to cause actually using
In the process, the needle being fixedly installed on piston 4 is not vertical up-or-down movement, but banking motion at an angle.Therefore therefore
Excessive between mold center in point, and when hot mouth length is shorter, needle tilt angle is larger, have assembly difficulty compared with
Stuck risk greatly and in movement.Specifically, being needle center, that is, cylinder body 1 center Y2 and point center Y1 so that after heated
As far as possible with one heart, when normal temperature state, set center cushion block 4 to cylinder body 1 center Y2 distance as d, center cushion block 4 and point center
The distance between Y1 is d1, and the expansion coefficient of discharge of d1=dx flow distribution plate, cylinder body needs are designed in not heated i.e. normal temperature state
When, center Y2, that is, needle center of cylinder body 1 deviates a certain distance d-d1 to the direction close to center cushion block, results in this way
Needle is difficult to assemble, and is not vertical up-or-down movement in valve needle movements, is very easy to stuck.
Utility model content
The purpose of this utility model is to provide a kind of hot runner system, so that no matter cylinder body is in room temperature or heated condition
Under, needle is concentric with center point always, is easily installed, to avoid needle stuck.
To realize one of above-mentioned purpose of utility model, one embodiment of the utility model provides a kind of hot runner system, institute
Hot runner system is stated to include solid plate, cylinder body, the piston that is set in the cylinder and drivingly can longitudinally be moved, consolidate
Surely it is set to the needle of the piston and the flow distribution plate equipped with runner, the flow distribution plate is equipped with hot mouth component, the hot mouth group
Part has center point, and the needle extends in the hot mouth component, wherein the cylinder body is fixedly connected on the shunting
Plate, and cylinder body free gap is equipped between the cylinder body and the solid plate on the transverse direction perpendicular to the longitudinal axis, work as institute
State after flow distribution plate is heated, the cylinder body with the expansion phase of the flow distribution plate for the solid plate between the cylinder body activity
It is moved in gap, the needle and the center point are concentric always.
As the further improvement of one embodiment of the utility model, the hot runner system further includes being set to the shunting
The center cushion block of the flow distribution plate is used to support and positioned on plate, defines the expansion coefficient of discharge of the flow distribution plate as k, and room temperature shape
Under state, the distance between center to center of the needle of the center cushion block is L1, described after the flow distribution plate is heated
The distance between the center of center cushion block to center of the needle is L, L1=L*k, and the cylinder body free gap includes being located at
First gap of side of the cylinder body far from the center cushion block, and first gap is greater than L-L1.
As the further improvement of one embodiment of the utility model, the solid plate is equipped with the peace for accommodating the cylinder body
The center of tankage, the center of the cylinder body and the center cushion block defines a plane, in the plane, the mounting groove
Center of the center of the center cylinder body far from the center cushion block, and the center at the center of the mounting groove and the cylinder body
Between eccentricity be equal to L-L1.
As the further improvement of one embodiment of the utility model, the hot runner system further includes being fixedly installed in institute
State the locating piece of flow distribution plate, and the cylinder body is fixedly installed in the locating piece, between the locating piece and the solid plate
It is equipped with locating piece free gap perpendicular to the transverse direction of the longitudinal axis, the locating piece free gap is living not less than the cylinder body
Dynamic gap.
As the further improvement of one embodiment of the utility model, the cylinder body is sheathed on the periphery of the locating piece,
The piston includes guide part and mounting portion, and the guide part is affixed that merge can be relative to the cylinder body with the inner wall of the cylinder body
Mobile, the needle is fixed at the mounting portion, and the mounting portion be at least partially disposed in the locating piece and with it is described
The inner wall of locating piece fits.
As the further improvement of one embodiment of the utility model, the solid plate is equipped with mounting hole, the positioning
Part includes the interconnecting piece being located in the mounting hole, is at an angle of with the interconnecting piece and leans with the end of the solid plate
Butting section and the fixed part for being fixed on the flow distribution plate, the butting section protrude from the periphery of the fixed part.
As the further improvement of one embodiment of the utility model, the hot runner system further includes being fixedly installed on institute
The guide sleeve on flow distribution plate is stated, the guide sleeve has pilot hole, and the needle is located in the pilot hole.
As the further improvement of one embodiment of the utility model, the guide sleeve is threadedly coupled with the flow distribution plate.
As the further improvement of one embodiment of the utility model, the locating piece part is located at the outer of the guide sleeve
Week, and there is on the transverse direction perpendicular to the longitudinal axis certain interval between the locating piece and the guide sleeve.
As the further improvement of one embodiment of the utility model, the locating piece and the guide sleeve be parallel to it is described
It partly overlaps on the direction of longitudinal axis.
As the further improvement of one embodiment of the utility model, when the piston is in maximum travel position, institute
State have between mounting portion and the guide sleeve it is at regular intervals.
As the further improvement of one embodiment of the utility model, the cylinder body defines cavity, the hot flow path system
System further includes the cylinder cap for sealing the cavity, and the cavity includes the first cavity and the second chamber for being located at the piston two sides
Body, first cavity adjacent to the cylinder cap, the solid plate be equipped with the first gas circuit being connected with first cavity and
The second gas circuit that second cavity is connected.
Compared with prior art, the utility model has the beneficial effects that: since the cylinder body is fixedly connected on described point
Flowing plate, and cylinder body free gap is equipped between the cylinder body and the solid plate on the transverse direction perpendicular to the longitudinal axis, because
After the flow distribution plate is heated, cylinder body can follow flow distribution plate to do identical expansion, while the cylinder body is relative to described fixed for this
Template moves in the cylinder body free gap.So that cylinder body is no matter under room temperature or heated condition, needle is always in
Heart point is concentric, so that being easily installed, to avoid needle stuck.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of hot runner system in the prior art, and flow distribution plate is in normal temperature state at this time；
Fig. 2 is the partial enlargement diagram in Fig. 1 at A；
Fig. 3 is another structural schematic diagram of hot runner system in Fig. 1, and flow distribution plate is in the state after being heated at this time；
Fig. 4 is the partial enlargement diagram in Fig. 3 at B；
Fig. 5 is the structural schematic diagram of hot runner system in specific embodiment of the present invention, and flow distribution plate is in normal at this time
Temperature state；
Fig. 6 is the partial enlargement diagram in Fig. 5 at C；
Fig. 7 is another structural schematic diagram of hot runner system in Fig. 5, and flow distribution plate is in the state after being heated at this time；
Fig. 8 is the partial enlargement diagram in Fig. 7 at D.
Specific embodiment
The utility model is described in detail below with reference to specific embodiment shown in the drawings.But these embodiment party
Formula is not intended to limit the utility model, structure that those skilled in the art are made according to these embodiments, method or
Transformation functionally is all contained in the protection scope of the utility model.
In each diagram of the application, for the ease of illustration, structure or partial certain sizes can be relative to other knots
Structure or part are exaggerated, and therefore, are only used for the basic structure of the theme of diagram the application.
Furthermore, it should be appreciated that although term first, second etc. can be used to describe herein various elements or
Structure, but these be described object should not be by the limitation of above-mentioned term.Above-mentioned term be only used for by these description objects that
This is distinguished.For example, the first gap can be referred to as the second gap, equally, the second gap can also be referred to as the first gap, this
Without departing from the protection scope of this application.
If Fig. 5 to Fig. 8 show a preferred embodiment of the hot runner system of the utility model, the utility model one is implemented
Example provides a kind of hot runner system, and hot runner system includes hot mouth component, temperature control box and at least formed in hot runner system
Hot flow path, by injecting glue material heating and temperature control means, the plastics of molten condition are successively poured after hot runner system
It infuses in the type chamber of mold, avoids the formation of gating system of material.
In the present embodiment, clearly to express described position and direction in the application, referring generally to hot flow path system
The upstream and downstream of hot flow path in system, the direction definition that downstream is directed toward by hot flow path upstream is "lower", otherwise is defined as "upper".
Specifically, hot runner system further includes solid plate 10, cylinder body 12, is set in cylinder body 12 and can be by drivingly along vertical
The mobile piston 16 of axis is fixedly installed on the needle (not illustrated) of piston 16 and the flow distribution plate 18 equipped with runner, flow distribution plate 18
It is equipped with hot mouth component, hot mouth component has center point 22, and needle extends in hot mouth component.Center point 22 is cast gate
Carry out the center of injecting glue.Further, cylinder body 12 is fixedly connected on flow distribution plate 18, and vertical between cylinder body 12 and solid plate 10
It is equipped with cylinder body free gap 20 in the transverse direction of longitudinal axis, after flow distribution plate 18 is heated, cylinder body 12 is swollen with flow distribution plate 18
Swollen to move in cylinder body free gap 20 relative to solid plate 10, needle is concentric always with center point 22.
In this preferred embodiment, since cylinder body 12 is fixedly connected on flow distribution plate 18, and between cylinder body 12 and solid plate 10
It is equipped with cylinder body free gap 20 perpendicular to the transverse direction of longitudinal axis, therefore after flow distribution plate 18 is heated, cylinder body 12 can be followed point
Flowing plate 18 does identical expansion, while cylinder body 12 moves in cylinder body free gap 20 relative to solid plate 10.So that cylinder
For body 12 no matter under room temperature or heated condition, the center of cylinder body 12 is concentric with center point 22 always, due to the center of cylinder body 12
It coincides with the center of needle, to guarantee that the center of needle keeps concentric with center point 22 always, so that being easily installed valve
Needle, and needle can remain vertical movement up and down, not have tilt angle, so that moving up and down for needle is more smooth, from
And it is stuck to avoid needle.
Hot runner system further includes the center cushion block 24 for being used to support and positioning flow distribution plate 18 on flow distribution plate 18, definition
The expansion coefficient of discharge of flow distribution plate 18 is k, and under normal temperature state, center to the center of needle, that is, point center 22 of center cushion block 24
The distance between be L1, in the embodiment, the center of cylinder body, the center of needle and point center 22 remain concentric.It shunts
After plate 18 is heated, the distance between center to the center of needle, that is, point center 22 of center cushion block 24 is L, L1=L*k, cylinder
Body free gap 20 includes the first gap 26 for being located at side of the cylinder body 12 far from center cushion block 24, and the first gap 26 is greater than L-
L1.So set, making after flow distribution plate 18 is heated, cylinder body 12 drives needle to expand with flow distribution plate 18, i.e., cylinder body 12 drives
The direction moving distance of needle to separate center cushion block 24 is L-L1, therefore the first gap 26 is set greater than L-L1, for cylinder body
12 is mobile.
Further, solid plate 10 is equipped with the mounting groove 27 for accommodating cylinder body 12, the center of cylinder body 12 and center cushion block 24
Center define a plane, in above-mentioned plane, and under normal temperature state, the center 29 of mounting groove 27 is remote compared with point center 22
Center from center cushion block 24, specifically, the eccentricity under normal temperature state, between the center 29 and point center 22 of mounting groove 27
Equal to L-L1, i.e. offset of the cylinder body 12 in solid plate 10 is equal to L-L1.Make in this way, after flow distribution plate 18 is heated, peace
The center 29 of tankage 27 and the center of cylinder body 12 are concentric, that is to say, that the center 29 of mounting groove 27 coincides with point center 22.
It is of course also possible to be arranged to, under normal temperature state, eccentricity between the center 29 of mounting groove 27 and the center of cylinder body 12 can also be with
It is arranged to other spacing, or, under normal temperature state, the center 29 of mounting groove 27 is concentric with the setting of the center of cylinder body 12, only
Ensure that the first gap 26 is greater than L-L1, meets the amount of movement of cylinder body 12.In addition, under normal temperature state, in addition to the first gap
Outside 26, cylinder body free gap 20 can also include positioned at the second gap 28 of closer 24 side of center cushion block of cylinder body 12.
Hot runner system further includes the locating piece 30 for being fixedly installed in flow distribution plate 18, and cylinder body 12 is fixedly installed in locating piece
30, locating piece free gap 32 is equipped between locating piece 30 and solid plate 10 in the transverse direction perpendicular to longitudinal axis, locating piece is living
Dynamic gap 32 is not less than cylinder body free gap 20.
Specifically, cylinder body 12 is sheathed on the periphery of locating piece 30, piston 16 includes guide part 34 and mounting portion 36, guide part
34 are affixed that merge can be mobile relative to cylinder body 12 with the inner wall of cylinder body 12, and needle be fixed at mounting portion 36, and mounting portion 36 to
Small part is located in locating piece 30 and fits with the inner wall of locating piece 30.
In the preferred embodiment, cylinder body 12 is cylinder, that is to say, that piston 16 is driven by gas pressure.Specifically,
Cylinder body 12 defines cavity 38, and hot runner system further includes the cylinder cap 44 of seal cavity 38, and cavity 38 includes being located at piston
The first cavity 40 and the second cavity 42 of 16 two sides, the first cavity 40 are equipped with and the first cavity adjacent to cylinder cap 44, solid plate 10
The second gas circuit 48 that 40 the first gas circuits 46 being connected are connected with the second cavity 42.When 46 air inlet of the first gas circuit, the second gas circuit
When 48 exhaust, driving piston 16 drives needle to move down, so that cast gate is closed；And when the exhaust of the first gas circuit 46, the second gas circuit
When 48 air inlet, driving piston 16 drives needle to move up, so that cast gate is opened.
Be additionally provided with mounting hole 56 on solid plate 10, locating piece 30 include interconnecting piece 50 in mounting hole 56, with connect
Portion 50 is angled and the butting section 52 to lean with the end of solid plate 10 and the fixed part 54 for being fixed on flow distribution plate 18, against
Portion 52 protrudes from the periphery of fixed part 54.In this preferred embodiment, butting section 52 and interconnecting piece 50 are perpendicular, and butting section 52 is prominent
For the periphery of fixed part 54, so that locating piece 30 is relatively reliable to be stably fixed to flow distribution plate 18.
Hot runner system further includes the guide sleeve 58 being fixedly installed on flow distribution plate 18, and guide sleeve 58 has pilot hole 60, needle
In pilot hole 60.Specific in the present embodiment, guide sleeve 58 is threadedly coupled with flow distribution plate 18.Certainly, guide sleeve 58 and flow distribution plate
Other connection types can also be used between 18.
Specifically, 30 part of locating piece is located at the periphery of guide sleeve 58, and perpendicular to vertical between locating piece 30 and guide sleeve 58
There is certain interval in the transverse direction of axis.In addition, locating piece 30 partly overlaps on the direction for be parallel to longitudinal axis with guide sleeve 58.
So that the hot runner system structure is compact, small volume.
Furthermore when piston 16 is in maximum travel position, that is, when the drive needle arrival lowermost position of piston 16,
On the extending direction of longitudinal axis, have between mounting portion 36 and guide sleeve 58 at regular intervals.To guarantee that piston 16 can be moved to
Maximum travel position enables needle to be effectively closed cast gate.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiments of understanding.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body explanation, they are all without departing from made by the utility model skill spirit not to limit the protection scope of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
Claims (12)
1. a kind of hot runner system, the hot runner system includes solid plate, cylinder body, is set in the cylinder and can be driven
Piston that ground longitudinally moves is fixedly installed on the needle of the piston and the flow distribution plate equipped with runner, on the flow distribution plate
Equipped with hot mouth component, the hot mouth component has center point, and the needle extends in the hot mouth component, and feature exists
In the cylinder body is fixedly connected on the flow distribution plate, and perpendicular to the longitudinal axis between the cylinder body and the solid plate
Transverse direction be equipped with cylinder body free gap, after the flow distribution plate is heated, the cylinder body with the flow distribution plate expansion phase
The solid plate is moved in the cylinder body free gap, the needle and the center point are concentric always.
2. hot runner system according to claim 1, which is characterized in that the hot runner system further includes being set to described point
The center cushion block of the flow distribution plate is used to support and positioned in flowing plate, defines the expansion coefficient of discharge of the flow distribution plate as k, and room temperature
Under state, the distance between center to center of the needle of the center cushion block is L1, after the flow distribution plate is heated, institute
Stating the distance between center to center of the needle of center cushion block is L, L1=L*k, and the cylinder body free gap includes position
In the first gap of side of the cylinder body far from the center cushion block, and first gap is greater than L-L1.
3. hot runner system according to claim 2, which is characterized in that the solid plate, which is equipped with, accommodates the cylinder body
The center of mounting groove, the center of the cylinder body and the center cushion block defines a plane, in the plane, the mounting groove
The center cylinder body center far from the center of the center cushion block, and in the center of the mounting groove and the cylinder body
Eccentricity between the heart is equal to L-L1.
4. hot runner system according to claim 1, which is characterized in that the hot runner system further includes being fixedly installed in
The locating piece of the flow distribution plate, and the cylinder body is fixedly installed in the locating piece, between the locating piece and the solid plate
Locating piece free gap is equipped on the transverse direction perpendicular to the longitudinal axis, the locating piece free gap is not less than the cylinder body
Free gap.
5. hot runner system according to claim 4, which is characterized in that the cylinder body is sheathed on the outer of the locating piece
Week, the piston include guide part and mounting portion, and the guide part is affixed that merge can be relative to described with the inner wall of the cylinder body
Cylinder body is mobile, and the needle is fixed at the mounting portion, and the mounting portion be at least partially disposed in the locating piece and with
The inner wall of the locating piece fits.
6. hot runner system according to claim 4, which is characterized in that the solid plate is equipped with mounting hole, described fixed
Position part includes the interconnecting piece being located in the mounting hole, is at an angle of with the interconnecting piece and leans with the end of the solid plate
Butting section and be fixed on the fixed part of the flow distribution plate, the butting section protrudes from the periphery of the fixed part.
7. hot runner system according to claim 5, which is characterized in that the hot runner system further includes being fixedly installed on
Guide sleeve on the flow distribution plate, the guide sleeve have pilot hole, and the needle is located in the pilot hole.
8. hot runner system according to claim 7, which is characterized in that the guide sleeve is threadedly coupled with the flow distribution plate.
9. hot runner system according to claim 7, which is characterized in that the locating piece part is located at the outer of the guide sleeve
Week, and there is on the transverse direction perpendicular to the longitudinal axis certain interval between the locating piece and the guide sleeve.
10. hot runner system according to claim 7, which is characterized in that the locating piece is being parallel to the guide sleeve
It partly overlaps on the direction of the longitudinal axis.
11. hot runner system according to claim 7, which is characterized in that when the piston is in maximum travel position,
Have between the mounting portion and the guide sleeve at regular intervals.
12. hot runner system according to claim 1, which is characterized in that the cylinder body defines cavity, the hot flow path
System further includes the cylinder cap for sealing the cavity, and the cavity includes the first cavity and second for being located at the piston two sides
Cavity, first cavity are equipped with the first gas circuit being connected with first cavity adjacent to the cylinder cap, the solid plate
The second gas circuit being connected with the second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821704768.7U CN209141332U (en) | 2018-10-19 | 2018-10-19 | Hot runner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821704768.7U CN209141332U (en) | 2018-10-19 | 2018-10-19 | Hot runner system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209141332U true CN209141332U (en) | 2019-07-23 |
Family
ID=67269263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821704768.7U Active CN209141332U (en) | 2018-10-19 | 2018-10-19 | Hot runner system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209141332U (en) |
-
2018
- 2018-10-19 CN CN201821704768.7U patent/CN209141332U/en active Active
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