CN107283756B - Hot runner system - Google Patents
Hot runner system Download PDFInfo
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- CN107283756B CN107283756B CN201710673792.2A CN201710673792A CN107283756B CN 107283756 B CN107283756 B CN 107283756B CN 201710673792 A CN201710673792 A CN 201710673792A CN 107283756 B CN107283756 B CN 107283756B
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- valve needle
- piston rod
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- link
- sliding block
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- 230000007246 mechanism Effects 0.000 claims abstract description 70
- 230000005540 biological transmission Effects 0.000 claims abstract description 62
- 238000004891 communication Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 230000033001 locomotion Effects 0.000 claims description 39
- 230000000670 limiting effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims 1
- 238000012546 transfer Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means therefor
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a hot runner system, comprising: a flow path mechanism including a diverter plate, the flow path mechanism having at least one transport channel and a distribution channel formed within the diverter plate, the transport channel being in fluid communication with the distribution channel; a valve needle mechanism passing through the flow distribution plate and partially disposed in the conveying passage; the bracket is fixed on the flow distribution plate; the driving cylinder is arranged at an interval with the flow distribution plate and comprises a cylinder body and a piston rod, wherein the cylinder body is fixed on the bracket; the connecting rod transmission mechanism is movably connected with the piston rod and the valve needle mechanism; the piston rod reciprocates along the left-right direction and drives the valve needle mechanism to reciprocate along the vertical direction through the connecting rod transmission mechanism so as to enable the valve needle mechanism to open and close the conveying channel; the left-right direction is perpendicular to the vertical direction. The invention avoids the direct contact between the driving cylinder and the flow distribution plate, reduces the heat transfer and reduces the complexity and the system thickness.
Description
Technical Field
The invention relates to the technical field of hot runners.
Background
Hot runner technology is an advanced technology applied to a runner system of a plastic injection mold, and a driving cylinder of a needle valve type hot runner system is usually fixed on a splitter plate to drive the movement of a valve needle. Therefore, the prior art is liable to cause the following problems: the driving cylinder is directly contacted with the flow distribution plate, and a large amount of heat of the flow distribution plate is transferred to the driving cylinder, so that the service life of protecting a sealing ring of the driving cylinder is shortened; in order to cool the driving cylinder, a cooling structure needs to be additionally arranged around the driving cylinder, so that the hot runner system is complicated, and the design cost is increased; meanwhile, the thickness of the hot runner system is large, and the material cost is increased.
Disclosure of Invention
The invention aims to provide a hot runner system, which can solve the problems of easy damage of a sealing ring of a driving cylinder, complexity and large thickness of the hot runner system caused by the structural layout in the prior art.
To achieve the above object, an embodiment of the present invention provides a hot runner system, including:
a flow path mechanism including a diverter plate, the flow path mechanism having at least one transport channel and a distribution channel formed within the diverter plate, the transport channel being in fluid communication with the distribution channel;
a valve needle mechanism passing through the flow distribution plate and partially disposed in the conveying passage;
the bracket is fixed on the flow distribution plate;
the driving cylinder is arranged at an interval with the flow distribution plate and comprises a cylinder body and a piston rod, wherein the cylinder body is fixed on the bracket;
the connecting rod transmission mechanism is movably connected with the piston rod and the valve needle mechanism;
the piston rod reciprocates along the left-right direction and drives the valve needle mechanism to reciprocate along the vertical direction through the connecting rod transmission mechanism so as to enable the valve needle mechanism to open and close the conveying channel; the left-right direction is perpendicular to the vertical direction.
As a further improvement of an embodiment of the present invention, the connecting rod transmission mechanism includes a first transmission member, a slider, and a second transmission member, the first transmission member is movably connected to the slider and the piston rod, and the second transmission member is rotatably connected to the slider and the valve needle mechanism;
when the piston rod reciprocates along the left-right direction, the piston rod drives the sliding block to slide through the first transmission piece, and the sliding block drives the valve needle mechanism to reciprocate along the vertical direction through the second transmission piece;
wherein the sliding of the slider has a motion component in a vertical direction and a motion component in a left-right direction.
As a further improvement of an embodiment of the present invention, the connecting rod transmission mechanism further includes a limiting component, the limiting component is movably connected to the sliding block and the bracket, and the limiting component is used for keeping the sliding block in a translational motion in a sliding process.
As a further improvement of the embodiment of the present invention, the position limiting assembly includes a first connecting member and a second connecting member, one end of the first connecting member is rotatably connected to the bracket around a first axis, the other end of the first connecting member is rotatably connected to the sliding block around a second axis, one end of the second connecting member is rotatably connected to the bracket around a third axis, and one end of the second connecting member is rotatably connected to the sliding block around a fourth axis;
wherein the first axis, the second axis, the third axis, the fourth axis are parallel to each other, and a segment of perpendicular between the first axis and the second axis, a segment of perpendicular between the third axis and the fourth axis are equal and parallel.
As a further improvement of the embodiment of the present invention, the second connecting member, the second transmission member, and the slider are coaxially and rotatably connected by a fourth link.
As a further improvement of an embodiment of the present invention, when the piston rod reciprocates in the left-right direction, the direction of the first motion component is the same as the motion direction of the needle mechanism, and the direction of the second motion component is the same as the motion direction of the piston rod;
when the sliding block slides, the second transmission piece rotates relative to the sliding block to perform bending and stretching movement.
As a further improvement of an embodiment of the present invention, the second transmission member is rotatably connected to the valve needle mechanism through a fifth link;
the bracket further comprises a guide groove, and the fifth connecting rod part is matched into the guide groove;
when the piston rod reciprocates in the left-right direction, the fifth link is restricted by the guide groove to move in the vertical direction.
As a further improvement of an embodiment of the present invention, the bracket further includes a baffle plate, and the baffle plate shields the guide groove;
when the fifth connecting rod has a movement trend of being separated from the guide groove along the axis of the fifth connecting rod, the baffle supports against the fifth connecting rod to limit the fifth connecting rod.
As a further improvement of an embodiment of the present invention, the valve needle mechanism includes a valve needle for opening and closing the conveying passage, and a connector fixedly connected to the valve needle, the connector is rotatably connected to the link transmission mechanism;
the bracket comprises an accommodating cavity matched with the connector;
when the piston rod reciprocates in the left-right direction, the piston rod drives the connector through the connecting rod transmission mechanism, the connector carries the valve needle to synchronously move in the vertical direction, and the connector is limited in that the accommodating cavity can only slide relative to the support in the vertical direction.
As a further improvement of an embodiment of the present invention, the hot runner system further includes a gasket disposed between the bracket and the manifold.
Compared with the prior art, the invention has the following beneficial effects: the driving cylinder is prevented from being in direct contact with the flow distribution plate, and a large amount of heat on the flow distribution plate is not transferred to the driving cylinder, so that a sealing ring of the driving cylinder is protected, and the service life of the driving cylinder is prolonged; the temperature around the driving cylinder is reduced, so that a cooling structure around the driving cylinder can be reduced or even cancelled, the complexity of a hot runner system is reduced, and the corresponding design cost is reduced; in addition, the thickness of the hot runner system can be greatly reduced.
Drawings
FIG. 1 is a schematic perspective view of a hot-runner system according to an embodiment of the present invention;
FIG. 2 is an exploded view of a hot-runner system according to an embodiment of the present invention;
FIG. 3 is a block diagram of a transmission mechanism according to an embodiment of the present invention;
FIG. 4 is an elevation view of the hot runner system with the piston rod in a retracted state in accordance with an embodiment of the present invention;
FIG. 5 is a top view corresponding to FIG. 4;
FIG. 6 is a longitudinal sectional view taken along line A-A of FIG. 5;
FIG. 7 is an elevation view of the hot runner system with the piston rod in an ejected condition in accordance with an embodiment of the present invention;
FIG. 8 is a top view corresponding to FIG. 7;
fig. 9 is a longitudinal sectional view taken along the line a '-a' in fig. 8.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the present invention provides a hot runner system 100, which is applied to an injection mold, and the hot runner system 100 includes a runner mechanism, a valve pin mechanism, a bracket 30, a link transmission mechanism 40, and a driving cylinder 60.
The runner mechanism is used for distributing and conveying plastic melt conveyed by a nozzle of an injection molding machine into a mold cavity and is provided with a distribution channel 101 and at least one conveying channel. The distribution channel 101 is provided with a glue inlet matched with a nozzle of the injection molding machine and at least one glue outlet; the delivery channel is in fluid communication with a dispensing channel 101, which corresponds to the glue outlet, the delivery channel having a gate opening in the mould cavity. Specifically, the flow channel mechanism includes a flow distribution plate 10, and a hot nozzle (not shown) mounted on the flow distribution plate 10, a distribution channel 101 is formed in the flow distribution plate 10, and the delivery channel is formed in the hot nozzle; the hot nozzle and the splitter plate 10 are fixed and installed in many ways, such as by screw fixation, tight fit, or by threaded connection.
The valve needle mechanism includes a valve needle 20, and the valve needle 20 passes through the diversion plate 10 and is partially disposed in the conveyance passage. Specifically, the valve needle 20 has a first end 21 and a second end 22 disposed opposite to each other, and the second end 22 extends into the conveying passage after passing through the flow distribution plate 10. The valve needle mechanism is controllably reciprocated in the vertical direction (shown as x-direction) to open and close the conveying passage, specifically, the valve needle 20 is used for opening and closing the conveying passage: when the valve pin 20 opens the conveying channel, the plastic melt in the distribution channel 101 can enter the mold cavity through the conveying channel; when the valve pin 20 closes the conveying channel, the plastic melt in the distribution channel 101 cannot pass through the conveying channel into the mold cavity.
The driving cylinder 60 is used for providing power to drive the movement of the valve needle mechanism, and may be provided as any one of an oil cylinder, an air cylinder, an electric cylinder, and the like. The driving cylinder 60 is spaced apart from the manifold 10, and the driving cylinder 60 includes a cylinder body 61 and a piston rod 62. The cylinder 61 is fixedly supported on the flow distribution plate 10 through the bracket 30, that is, the bracket 30 is screwed and fixed on the flow distribution plate 10 through the screw 94, the cylinder 61 is screwed and fixed on the bracket 30, and the cylinder 61 is not directly contacted with the flow distribution plate 10, so that heat transfer is reduced.
The connecting rod transmission mechanism 40 is movably arranged on the bracket 30 and movably connects the piston rod 62 and the valve needle mechanism to realize the direction change transmission of the moving direction of the piston rod 62 and the valve needle mechanism. That is, when the driving cylinder 60 is operated, the piston rod 62 is controllably reciprocated in the left-right direction (the illustrated y-direction), and the piston rod 62 drives the needle mechanism to move in the vertical direction through the link transmission mechanism 40, thereby effecting opening and closing of the delivery passage by the needle 20. In the present embodiment, the left-right direction and the vertical direction are perpendicular.
In this way, the hot runner system of the embodiment has the advantages that the driving cylinder and the splitter plate are arranged at intervals through the bracket, and heat on the splitter plate is not greatly transferred to the driving cylinder, so that a sealing ring of the driving cylinder is protected, and the service life of the driving cylinder is prolonged; the temperature around the driving cylinder is reduced, so that a cooling structure around the driving cylinder can be reduced or even cancelled, the complexity of a hot runner system is reduced, and the corresponding design cost is reduced; in addition, the thickness of the hot runner system can be greatly reduced by arranging the support and arranging the connecting rod transmission mechanism to realize the direction-changing transmission of the piston rod and the valve needle mechanism.
For clarity of the position and direction described in this application, "lower" is defined herein as the direction of movement of the valve needle 20 from opening to closing the delivery path, whereas "upper" is defined as the direction of movement of the valve needle 20 from closing to opening the delivery path; "left" is defined as the direction of movement of the piston rod 62 from the pushed-out state (see fig. 9) to the retracted state (see fig. 6), whereas "right" is defined as the direction of movement of the piston rod 62 from the retracted state to the pushed-out state.
In the present embodiment, when the piston rod 62 moves rightward to the pushed-out state, the valve needle 20 moves downward to close the delivery passage; when the piston rod 62 moves to the left to the retracted state, the valve needle 20 moves upward to open the delivery passage. Of course, this embodiment is merely illustrative of the present invention and does not limit the scope of the present invention.
Further, in the present embodiment, referring to fig. 2 and 3, the valve needle mechanism further comprises a connector 50, and the connector 50 is used for fixedly connecting the valve needle 20. Specifically, the first end 21 of the valve needle 20 is provided with a sudden change portion 211, and the diameter of the valve needle 20 at the sudden change portion 211 is larger or smaller than the diameter of the first end 21; the connecting head 50 has a catch 52 that mates with the abrupt change 211. The abrupt change portion 211 and the catching portion 52 are configured such that the needle 20 and the connecting head 50 are relatively fixed in the vertical direction (i.e., in the extending direction of the needle 20) when the abrupt change portion 211 is caught to the catching portion 52.
The connecting head 50 has a through hole 51, and the link transmission mechanism 40 is rotatably connected with the connecting head 50 through a fifth link 477; when the piston rod 62 reciprocates in the left-right direction, the piston rod 62 drives the connecting head 50 to move in the vertical direction (in the process, the fifth connecting rod 477 rotates relative to the connecting head 50) by driving the connecting rod transmission mechanism 40, and then the connecting head 50 carries the valve needle 20 to move synchronously in the vertical direction. Thus, by providing the connecting head 50, bending of the valve needle 20 due to lateral forces (i.e. forces perpendicular to the vertical) during movement is avoided.
In the present embodiment, the bracket 30 includes a receiving cavity (not shown), and the connector 50 is adapted to the receiving cavity, that is, the connector 50 is disposed in the receiving cavity. When the piston rod 62 reciprocates in the left-right direction, the coupling head 50 is limited by the accommodation chamber to be slidable only in the vertical direction with respect to the bracket 30. Therefore, the stability of the movement direction of the connector 50 is ensured by the limiting effect of the accommodating cavity on the connector 50. Further, the bracket 30 includes a guide groove 34 extending in the vertical direction, and the fifth link 477 is partially fitted into the guide groove 34; wherein, when the piston rod 62 reciprocates in the left-right direction, the fifth link 477 is slidable in the guide groove 34 and the fifth link 477 is restricted by the guide groove 34 to move in the vertical direction.
In addition, the support 30 further includes a mounting groove 35 communicating with the guide groove 34, and a blocking plate 36, the blocking plate 36 may be mounted to the mounting groove 35 by a screw 94 to shield the guide groove 34, and when the fifth link 477 has a movement tendency to escape from the guide groove 34 along its axis, the blocking plate 36 abuts against the fifth link 477 to limit the fifth link 477, thereby preventing the connecting head 50 and the link driving mechanism 40 from being detached from each other.
Further, referring to fig. 3, the link transmission mechanism 40 includes a first transmission member 41, a slider 42, and a second transmission member 45.
Referring to fig. 4 to 9, one end of the first transmission member 41 is rotatably connected to the piston rod 62 through a first link 471, and the other end of the first transmission member 41 is rotatably connected to the slider 42 through a second link 472. When the piston rod 62 reciprocates in the left-right direction, the piston rod 62 drives the slider 42 to slide by the first transmission member 41, and this sliding movement of the slider 42 has both a first movement component in the vertical direction and a second movement component in the left-right direction. In the present embodiment, the direction of the first motion component is the same as the motion direction of the valve needle mechanism, and the direction of the second motion component is the same as the motion direction of the piston rod 62: when the piston rod 62 moves to the right (at this time, the needle mechanism moves downward), the piston rod 62 drives the slider 42 to slide to the lower right through the first transmission member 41; when the piston rod 62 moves leftward (at this time, the needle mechanism moves upward), the slider 42 is driven by the first transmission member 41 to slide leftward and upward.
One end of the second transmission member 45 is rotatably connected to the slider 42 through the fourth link 476, and the other end of the second transmission member 45 is rotatably connected to the connection head 50 through the fifth link 477. When the sliding block 42 slides, the sliding block 42 can drive the second transmission member 45 to perform a bending motion (i.e. the second transmission member 45 performs a bending motion relative to the sliding block 42), and then the second transmission member 45 drives the valve needle mechanism to perform a reciprocating motion in the vertical direction. In this embodiment, the flexion and extension movements are divided into flexion and extension processes: when the sliding block 42 slides to the lower right, the sliding block 42 can drive the second transmission piece 45 to perform a bending process, an included angle between the second transmission piece 45 and the sliding block 42 is gradually reduced, and the second transmission piece 45 drives the valve needle mechanism to move downwards; when the sliding block 42 slides to the upper left, the sliding block 42 can drive the second transmission piece 45 to perform the stretching process, the included angle between the second transmission piece 45 and the sliding block 42 is gradually increased, and the second transmission piece 45 drives the valve needle mechanism to move upwards.
Further, the link transmission mechanism 40 further includes a limiting component, and the limiting component is movably connected with the bracket 30 and the sliding block 42. When the piston rod 62 drives the sliding block 42 to slide through the first transmission member 41, the limiting assembly is used for enabling the sliding block 42 to always maintain translational motion relative to the bracket 30 in the sliding process, so that the sliding block 42 is prevented from overturning.
Specifically, in the present embodiment, the limiting assembly includes a first connecting member 43 and a second connecting member 44. One end of the first link 43 is rotatably connected to the bracket 30 about a first axis (i.e., the central axis of the first rod 474) by the first rod 474, and the other end of the first link 43 is rotatably connected to the slider 42 about a second axis (i.e., the central axis of the third rod 473) by the third rod 473; one end of the second connector 44 is rotatably connected to the bracket 30 about a third axis (i.e., the central axis of the second strut 475) by the second strut 475, and the other end of the second connector 44 is rotatably connected to the slider 42 about a fourth axis (i.e., the central axis of the fourth link 476) by the fourth link 476.
Referring to fig. 4, the first axis, the second axis, the third axis, and the fourth axis are parallel to each other, and a vertical section M between the first axis and the second axis, and a vertical section N between the third axis and the fourth axis are equal and parallel. In short, the first connector 43 and the second connector 44 are arranged substantially in parallel and at equal length.
In the present embodiment, the second connecting member 44, the second transmission member 45 and the sliding block 42 are coaxially and rotatably connected by a fourth link 476.
Further, referring to fig. 1, hot runner system 100 also includes a gasket 70 disposed between support 30 and manifold 10 to reduce the contact area between support 30 and manifold 10, thereby preventing excessive heat transfer from manifold 10 to support 30. The gasket 70 is preferably provided of a titanium alloy material.
In addition, referring to fig. 2, the hot runner system 100 further includes a valve needle guide sleeve 80, and the valve needle guide sleeve 80 is installed on the flow distribution plate 10 and sleeved outside the valve needle 20 to stabilize the movement direction of the valve needle 20.
Compared with the prior art, the hot runner system provided by the embodiment of the invention has the following beneficial effects: by optimizing the connection relation between the driving cylinder and the flow distribution plate, the heat on the flow distribution plate is reduced to be transferred to the driving cylinder, so that a sealing ring of the driving cylinder is protected, and the service life of the driving cylinder is prolonged; cooling structures around the driving cylinder can be reduced or even cancelled, the complexity of a hot runner system is reduced, and the corresponding design cost is reduced; in addition, the thickness of the hot runner system can be greatly reduced.
The detailed description set forth above is merely a specific description of possible embodiments of the present invention and is not intended to limit the scope of the invention, which is intended to include within the scope of the invention equivalent embodiments or modifications that do not depart from the technical spirit of the present invention.
Claims (8)
1. A hot-runner system, comprising:
a flow path mechanism including a diverter plate, the flow path mechanism having at least one transport channel and a distribution channel formed within the diverter plate, the transport channel being in fluid communication with the distribution channel;
a valve needle mechanism passing through the flow distribution plate and partially disposed in the conveying passage; it is characterized in that the preparation method is characterized in that,
the bracket is fixed on the flow distribution plate;
the driving cylinder is arranged at an interval with the flow distribution plate and comprises a cylinder body and a piston rod, wherein the cylinder body is fixed on the bracket;
the connecting rod transmission mechanism is movably connected with the piston rod and the valve needle mechanism and comprises a first transmission piece, a sliding block and a second transmission piece, the first transmission piece is movably connected with the sliding block and the piston rod respectively, the second transmission piece is rotatably connected with the sliding block and the valve needle mechanism respectively, the connecting rod transmission mechanism further comprises a limiting component, the limiting component is movably connected with the sliding block and the bracket, and the limiting component is used for keeping the sliding block to move horizontally in the sliding process;
the piston rod reciprocates along the left-right direction and drives the valve needle mechanism to reciprocate along the vertical direction through the connecting rod transmission mechanism so as to enable the valve needle mechanism to open and close the conveying channel; the left-right direction is vertical to the vertical direction;
when the piston rod reciprocates along the left-right direction, the piston rod drives the sliding block to slide through the first transmission piece, and the sliding block drives the valve needle mechanism to reciprocate along the vertical direction through the second transmission piece;
wherein the sliding of the slider has a first motion component in a vertical direction and a second motion component in a left-right direction;
the valve needle mechanism comprises a valve needle and a valve needle guide sleeve, and the valve needle guide sleeve is sleeved outside the valve needle.
2. The hot-runner system of claim 1, wherein the position limiting assembly comprises a first link and a second link, one end of the first link being rotationally coupled to the frame about a first axis, the other end of the first link being rotationally coupled to the slider about a second axis, one end of the second link being rotationally coupled to the frame about a third axis, and one end of the second link being rotationally coupled to the slider about a fourth axis;
wherein the first axis, the second axis, the third axis, the fourth axis are parallel to each other, and a segment of perpendicular between the first axis and the second axis, a segment of perpendicular between the third axis and the fourth axis are equal and parallel.
3. The hot-runner system of claim 2, wherein the second connector, the second transmission, and the slider are coaxially rotationally connected via a fourth link.
4. The hot-runner system according to claim 1, wherein when the piston rod reciprocates in the left-right direction, the first motion component has the same direction as the movement direction of the valve needle mechanism, and the second motion component has the same direction as the movement direction of the piston rod;
when the sliding block slides, the second transmission piece rotates relative to the sliding block to perform bending and stretching movement.
5. The hot-runner system of claim 1, wherein the second transmission is rotationally connected to the valve pin mechanism by a fifth link;
the bracket further comprises a guide groove, and the fifth connecting rod part is matched into the guide groove;
when the piston rod reciprocates in the left-right direction, the fifth link is restricted by the guide groove to move in the vertical direction.
6. The hot-runner system of claim 5, wherein the bracket further comprises a shield that covers the guide slot;
when the fifth connecting rod has a movement trend of being separated from the guide groove along the axis of the fifth connecting rod, the baffle supports against the fifth connecting rod to limit the fifth connecting rod.
7. The hot-runner system according to claim 1, wherein the valve needle mechanism comprises a valve needle for opening and closing the conveying passage, and a connector fixedly connected with the valve needle, the connector being rotatably connected with the link transmission mechanism;
the bracket comprises an accommodating cavity matched with the connector;
when the piston rod reciprocates in the left-right direction, the piston rod drives the connector through the connecting rod transmission mechanism, the connector carries the valve needle to synchronously move in the vertical direction, and the connector is limited in that the accommodating cavity can only slide relative to the support in the vertical direction.
8. The hot-runner system of claim 1, further comprising a gasket disposed between the bracket and the manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710673792.2A CN107283756B (en) | 2017-08-09 | 2017-08-09 | Hot runner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710673792.2A CN107283756B (en) | 2017-08-09 | 2017-08-09 | Hot runner system |
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| Publication Number | Publication Date |
|---|---|
| CN107283756A CN107283756A (en) | 2017-10-24 |
| CN107283756B true CN107283756B (en) | 2020-03-10 |
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| CN201710673792.2A Active CN107283756B (en) | 2017-08-09 | 2017-08-09 | Hot runner system |
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| CN113246399A (en) * | 2021-06-04 | 2021-08-13 | 海美克精密机械(苏州)有限公司 | Side needle valve suitable for injection mold |
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| CN207059107U (en) * | 2017-08-09 | 2018-03-02 | 柳道万和(苏州)热流道系统有限公司 | Top-tip |
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|---|---|---|---|---|
| US5916605A (en) * | 1996-09-27 | 1999-06-29 | Dynisco Hotrunners, Inc. | Valve actuated injection molding apparatus |
| EP0836925A1 (en) * | 1996-10-09 | 1998-04-22 | EUROTOOL Beheer B.V. | Valve-gated injection moulding device |
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| CN103419327A (en) * | 2013-07-11 | 2013-12-04 | 浙江恒道科技有限公司 | Lever-valve needle single nozzle |
| CN204414498U (en) * | 2015-01-17 | 2015-06-24 | 深圳市米高科技有限公司 | Side direction oil cylinder needle switching mechanism |
| CN105965790A (en) * | 2016-07-30 | 2016-09-28 | 曹淅 | Integral type hot runner free of runner dead corner |
| CN207059107U (en) * | 2017-08-09 | 2018-03-02 | 柳道万和(苏州)热流道系统有限公司 | Top-tip |
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| CN107283756A (en) | 2017-10-24 |
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