CN112677412A

CN112677412A - Cold runner diverging device and cold runner mould

Info

Publication number: CN112677412A
Application number: CN202011287143.7A
Authority: CN
Inventors: 易存彦; 鲁浩; 许锴锴; 陈朋
Original assignee: Welling Wuhu Motor Manufacturing Co Ltd
Current assignee: Welling Wuhu Motor Manufacturing Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-04-20

Abstract

The invention discloses a cold runner flow dividing device and a cold runner mold, wherein the cold runner flow dividing device comprises a body and a plurality of adjusting parts, a cold runner and a feed port are arranged on the body, the cold runner comprises a main runner and a plurality of sub-runners, one ends of the sub-runners are communicated with the main runner, the other ends of the sub-runners are provided with discharge ports, the plurality of sub-runners are arranged at intervals, and the feed port is communicated with the main runner and is used for communicating the main runner with the outside; one end of the adjusting component can at least partially extend into and be far away from the sub-runners so as to adjust the area of the through-flow section of the sub-runners, the other end of the adjusting component extends out of the body, and the adjusting components are in one-to-one correspondence with the sub-runners. The cold runner flow dividing device can conveniently adjust the flow of the sub-runners, reduce the time consumption for adjusting the flow, improve the adjusting efficiency, and also can adjust the flow of different sub-runners and maintain the balance of each sub-runner.

Description

Cold runner diverging device and cold runner mould

Technical Field

The invention relates to the technical field of dies, in particular to a cold runner flow dividing device and a cold runner die with the same.

Background

In the related art, a hot runner mold is mostly adopted for the BMC mold, and the hot runner mold is easy to produce a long and unrecyclable stub bar in the production process, so that a large amount of rubber is wasted, and the production cost is increased. Meanwhile, since the waste cannot be naturally degraded, special treatment is required, which also causes serious environmental problems. The cold runner mold is used as a mold for keeping the runner at a lower temperature all the time by using a refrigerant to prevent the BMC material in the runner from being solidified, and then when the next molding is carried out, the residual rubber material in the runner enters a mold cavity to form an injection molding product, so that a plurality of problems brought by the hot runner mold are overcome, and the cold runner mold becomes the development direction of the current BMC mold.

However, the flow adjusting devices of the sub-runners in the related art cold runner mold are located inside the sub-runner plate and the sub-runner cover plate, and when the flow of the sub-runners is adjusted, the mold needs to be disassembled, which takes a long time and has low adjustment efficiency, which affects the production efficiency.

Disclosure of Invention

Therefore, the embodiment of the invention provides a cold runner flow dividing device, which can conveniently adjust the flow of the sub-runners, reduce the time consumption for adjusting the flow, improve the adjusting efficiency, adjust the flow of different sub-runners and maintain the balance of each sub-runner.

The embodiment of the invention also provides a cold runner mold.

The cold runner flow dividing device according to an embodiment of the first aspect of the present invention includes: the cold runner comprises a main runner and a plurality of sub-runners, one end of each sub-runner is communicated with the main runner, the other end of each sub-runner is provided with a discharge hole, the plurality of sub-runners are arranged at intervals, and the feed port is communicated with the main runner and used for communicating the main runner with the outside; the regulating device comprises a body, a plurality of regulating parts and a plurality of sub-runners, wherein one end of each regulating part can at least partially extend into and be far away from the sub-runners so as to regulate the area of the through-flow cross section of the sub-runners, the other end of each regulating part extends out of the body, and the regulating parts correspond to the sub-runners one to one.

According to the cold runner flow dividing device provided by the embodiment of the invention, the flow of different sub-runners can be adjusted by arranging the plurality of adjusting parts, the balance of each sub-runner is maintained, the adjusting parts are adjusted outside the body, the flow of the sub-runners can be conveniently adjusted, the time consumption for adjusting the flow is reduced, and the adjusting efficiency is improved.

In some embodiments, the body comprises a cold runner plate and a cold runner cover plate, the cold runner cover plate is arranged on the cold runner plate, a first groove and a third groove which are communicated with each other are arranged on the cold runner plate, a second groove and a third groove which are communicated with each other are arranged on the cold runner cover plate, the first groove and the second groove are oppositely arranged to form the cold runner, the third groove and the fourth groove are oppositely arranged to form the feed inlet, and the discharge outlet is arranged on the cold runner plate.

In some embodiments, the cold runner plate is provided with a plurality of first cooling lines for cooling the cold runner plate, and the cold runner cover plate is provided with a plurality of second cooling lines for cooling the cold runner cover plate.

In some embodiments, a temperature sensor is disposed within the cold runner plate and/or the cold runner cover plate, the temperature sensor being disposed adjacent to the cold runner.

In some embodiments, the adjusting member is disposed between the cold runner plate and the cold runner cover plate, and the moving direction of the adjusting member is suitable for the orthogonal arrangement of the flow direction of the sizing material in the runner.

In some embodiments, the adjusting member includes a plurality of adjusting rods, one end of each of the plurality of adjusting rods is at least partially extendable into and away from the branch passage to adjust the area of the through-flow cross section of the branch passage, the other end of each of the plurality of adjusting rods extends out of the body, and the plurality of adjusting rods correspond to the plurality of branch passages one to one.

In some embodiments, an arc-shaped transition section is arranged at the junction of the main runner and the plurality of sub-runners.

A cold runner mold according to an embodiment of a second aspect of the present invention includes: the die comprises a first die plate and a second die plate, wherein a first die core is arranged in the first die plate, a second die core is arranged in the second die plate, the first die plate and the second die plate can be contacted and separated, when the first die plate is contacted with the second die plate, the first die plate and the second die plate are superposed, and a die cavity is defined by the first die core and the second die core; the cold runner flow dividing device is the cold runner flow dividing device in the embodiment, and is arranged on one side, far away from the second template, of the first template; and the glue inlet device is arranged in the first die core, the discharge port in the cold runner flow dividing device is communicated with one end of the glue inlet device, and the other end of the glue inlet device is communicated with the die cavity.

According to the cold runner mold provided by the embodiment of the invention, the cold runner shunting device is arranged, so that the material in the runner is prevented from being solidified, the waste of the material is reduced, the cost is saved, the molding period is shortened, the production efficiency is improved, the flow of different sub-runners can be adjusted, the balance of each sub-runner is maintained, the adjusting part is adjusted outside the body, the flow of the sub-runners can be conveniently adjusted, the time consumption for adjusting the flow is reduced, and the adjusting efficiency is improved.

In some embodiments, the glue feeding device comprises: the feeding sleeve is internally provided with an injection channel, and the injection channel comprises a feeding end and a discharging end; the valve needle is arranged on the feeding sleeve in a penetrating mode and is located at least partially in the injection channel, and the valve needle can move relative to the feeding sleeve along the length direction of the feeding sleeve; a sealing member disposed within and connected to the feeder sleeve, the sealing member being spaced from the injection passage in a direction along the length of the feeder sleeve and adjacent the feed end of the injection passage, the valve needle extending through the sealing member into the feeder sleeve.

In some embodiments, the sealing component includes a first non-return rubber sleeve and a second non-return rubber sleeve, the first non-return rubber sleeve and the second non-return rubber sleeve are both sleeved on the valve needle, and the first non-return rubber sleeve and the second non-return rubber sleeve are arranged at intervals in a length direction of the feeding sleeve.

In some embodiments, the first non-return rubber sleeve has a cross-sectional area that is constant along a length direction of the feeding sleeve compared to the second non-return rubber sleeve that is adjacent to the feeding end of the injection channel, and at least a portion of the cross-sectional area of the second non-return rubber sleeve is gradually reduced along a direction toward the first non-return rubber sleeve.

In some embodiments, the cold runner mold further comprises a heat shield coupled to the feed sleeve and disposed adjacent the discharge end of the injection passage, the needle extending through the heat shield.

In some embodiments, the cold runner mold further comprises a cooling water jacket, the cooling water jacket is sleeved on the feeding sleeve, and the cooling water jacket is provided with a water inlet and a water outlet.

In some embodiments, the cold runner mold further comprises a pressing assembly and a support assembly, the second mold plate is arranged on the support assembly, and the pressing assembly is arranged on one side of the cold runner flow dividing device far away from the first mold plate so as to press the cold runner flow dividing device and the first mold plate together.

In some embodiments, the cold runner mold further comprises an ejection assembly to eject the molded article in the cavity.

Drawings

Fig. 1 is a schematic structural view of a cold runner mold according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a cold runner cover plate in the cold runner flow dividing device according to the embodiment of the invention.

Fig. 3 is a schematic structural diagram of a cold runner plate in the cold runner flow dividing device according to the embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of the cold runner mold shown in fig. 1.

Fig. 5 is a schematic structural diagram of a glue feeding device in a cold runner mold according to an embodiment of the invention.

Reference numerals:

the body 1 is provided with a plurality of grooves,

a cold runner 101, a main runner 1011, a sub-runner 1012,

a feed inlet 102, a discharge outlet 103, a cold runner plate 104, a mounting hole 1041, a cold runner cover plate 105,

an adjusting part 2, an adjusting rod 201, an adjusting nut 202,

a first template 3, a second template 4, a first mold core 5, a second mold core 6 and a mold cavity 7,

a glue feeding device 8, a feeding sleeve 801, an injection passage 8011, a valve needle 802, a sealing part 803, a first non-return rubber sleeve 8031, a second non-return rubber sleeve 8032, a heat insulation sleeve 804, a cooling water jacket 805,

the pressing assembly 9, the first block 901, the first block 902,

a support assembly 10, a second square plate 1001, a second block 1002,

the ejector assembly 11, the first push plate 1101, the ejector plate 1102, the ejector 1103, the first guide 1104, the first spring 1105,

the drive assembly 12, the second push plate 1201, the valve pin plate 1202, the second guide rods 1203, the second springs 1204,

heat insulation board 13 and backing board 14

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1 to 4, the cold runner flow dividing device according to the embodiment of the present invention includes a body 1 and a plurality of regulating members 2.

Be equipped with cold runner 101 and feed inlet 102 on body 1, cold runner 101 includes sprue 1011 and a plurality of subchannel 1012, and the one end and the sprue 1011 intercommunication of subchannel 1012, the other end of subchannel 1012 have discharge gate 103, and a plurality of subchannel 1012 interval arrangements, feed inlet 102 and sprue 1011 intercommunication are used for communicateing sprue 1011 and external world. As shown in fig. 4, the discharge hole 103 is provided in the side wall of the body 1.

One end of the adjusting component 2 can at least partially extend into and be far away from the branch channel 1012 so as to adjust the area of the through-flow section of the branch channel 1012, the other end of the adjusting component 2 extends out of the body 1, and the adjusting components 2 are in one-to-one correspondence with the branch channels 1012. As shown in fig. 1 to 3, the positions and the number of the regulating members 2 correspond to those of the sub-runners 1012. Specifically, the number of the adjustment members 2 is 6, 6 adjustment members 2 extend horizontally, and the adjustment members 2 are movable in the left-right direction.

According to the cold runner flow dividing device provided by the embodiment of the invention, the flow of different sub-runners 1012 can be adjusted by arranging the plurality of adjusting parts 2, the balance of each sub-runner 1012 is maintained, the adjusting parts 2 are adjusted outside the body 1, the flow of the sub-runners 1012 can be conveniently adjusted, the time consumption for adjusting the flow is reduced, and the adjusting efficiency is improved.

In some embodiments, the body 1 includes a cold runner plate 104 and a cold runner cover plate 105, the cold runner cover plate 105 is disposed on the cold runner plate 104, the cold runner plate 104 is provided with a first groove (not shown) and a third groove (not shown) that are communicated with each other, the cold runner cover plate 105 is provided with a second groove (not shown) and a third groove (not shown) that are communicated with each other, the first groove and the second groove are oppositely arranged to form the cold runner 101, the third groove and the fourth groove are oppositely arranged to form the feed opening 102, and the feed opening 103 is disposed on the cold runner plate 104.

As shown in fig. 1 to 3, the cold runner plate 104 and the cold runner cover plate 105 are contactable and distable, the upper end surface of the cold runner plate 104 is provided with a first groove and a third groove which are communicated with each other, and the lower end surface of the cold runner cover plate 105 is provided with a second groove and a third groove which are communicated with each other (after the cold runner plate 104 and the cold runner cover plate 105 are contacted, the first groove and the second groove are oppositely arranged to form the cold runner 101, and the third groove and the fourth groove are oppositely arranged to form the feed inlet 102).

In some embodiments, the cold runner plate 104 is provided with a plurality of first cooling lines (not shown) for cooling the cold runner plate 104, and the cold runner cover plate 105 is provided with a plurality of second cooling lines (not shown) for cooling the cold runner cover plate 105.

According to the cold runner flow dividing device provided by the embodiment of the invention, the temperature of the cold runner plate 104 is reduced by arranging the first cooling pipeline, so that the material in the cold runner plate 104 is prevented from being solidified, and the temperature of the cold runner cover plate 105 is reduced by arranging the second cooling pipeline, so that the material in the cold runner cover plate 105 is prevented from being solidified.

In some embodiments, a temperature sensor (not shown) is provided within the cold runner plate 104 and/or the cold runner cover plate 105, and is disposed adjacent to the cold runner 101. As shown in fig. 2 and 3, a mounting hole 1041 for communicating the inside of the cold runner plate 104 with the outside is provided in the cold runner plate 104, one end of the mounting hole 1041 is communicated with the outside, the other end of the mounting hole 1041 is adjacent to the cold runner 101, and the mounting hole 1041 is used for mounting a temperature sensor.

According to the cold runner flow dividing device provided by the embodiment of the invention, the temperature of the material in the cold runner 101 can be detected by arranging the temperature sensor, and the cooling efficiency of the cooling pipeline is controlled according to the detected temperature, so that the temperature of the material in the cold runner 101 is controlled to be below the solidification temperature.

In some embodiments, the adjustment member 2 is arranged between the cold runner plate 104 and the cold runner cover plate 105, the direction of movement of the adjustment member 2 being adapted to the orthogonal arrangement of the flow direction of the glue in the runner 1012. As shown in fig. 1 to 3, the regulating member 2 is located between the cold runner plate 104 and the cold runner cover plate 105 in the up-down direction, and the regulating member 2 moves horizontally in the left-right direction.

According to the cold runner flow dividing device provided by the embodiment of the invention, the adjusting part 2 is arranged between the cold runner plate 104 and the cold runner cover plate 105, when the adjusting part 2 is positioned in the cold runner 101, the distance between the adjusting part 2 and the bottom of the first groove is equal to the distance between the adjusting part 2 and the bottom of the second groove, and the balance of material circulation in the flow dividing channel 1012 is ensured.

In some embodiments, the adjusting member 2 includes a plurality of adjusting rods 201, one end of each of the plurality of adjusting rods 201 is at least partially extendable into and away from the sub-runners 1012 to adjust the area of the flow cross section of the sub-runners 1012, the other end of each of the plurality of adjusting rods 201 extends out of the body 1, and the plurality of adjusting rods 201 are in one-to-one correspondence with the plurality of sub-runners 1012. As shown in fig. 1 to 3, the adjusting rod 201 is a threaded rod, an adjusting nut 202 is disposed at one end of the adjusting rod 201 extending out of the main body 1, the adjusting nut 202 is sleeved on the adjusting rod 201, and the adjusting nut 202 is rotated to drive the adjusting rod 201 to move in the left-right direction, so that one end of the adjusting rod 201 located inside the main body 1 can extend into and be away from the sub-channel 1012 to adjust the area of the through-flow section of the sub-channel 1012.

In some embodiments, the intersection of main runner 1011 and plurality of sub-runners 1012 is provided with an arcuate transition. According to the cold runner flow dividing device provided by the embodiment of the invention, the impact force of materials in the cold runner 101 on the inner wall surface of the cold runner 101 is reduced through the arc transition section at the joint of the main runner 1011 and the plurality of sub-runners 1012, and the arc transition section is also beneficial to mixing of the materials, diffusion of glass fibers, orientation reduction, random distribution of the glass fibers, internal stress reduction of products and improvement of uniformity, compactness and strength of the products.

Some specific examples of the cold runner flow dividing device of the present invention are described below with reference to fig. 1 to 3.

The cold runner flow dividing device according to the embodiment of the present invention includes a body 1 and a plurality of regulating members 2.

Be equipped with cold runner 101 and feed inlet 102 on body 1, cold runner 101 includes sprue 1011 and a plurality of subchannel 1012, the one end and the sprue 1011 intercommunication of subchannel 1012, the other end of subchannel 1012 has discharge gate 103, a plurality of subchannel 1012 interval arrangements, feed inlet 102 communicates with sprue 1011 to be used for communicating sprue 1011 and external, the handing-over department of sprue 1011 and a plurality of subchannel 1012 is equipped with the arc changeover portion.

The body 1 comprises a cold runner plate 104 and a cold runner cover plate 105, the cold runner cover plate 105 is arranged on the cold runner plate 104, the cold runner plate 104 and the cold runner cover plate 105 can be contacted and separated, a first groove and a third groove which are communicated with each other are arranged on the cold runner plate 104, a second groove and a third groove which are communicated with each other are arranged on the cold runner cover plate 105, the first groove and the second groove are oppositely arranged to form a cold runner 101, the third groove and the fourth groove are oppositely arranged to form a feed inlet 102, and a discharge outlet 103 is arranged on the cold runner plate 104.

The cold runner plate 104 is internally provided with a mounting hole for communicating the inside of the cold runner plate 104 with the outside, one end of the mounting hole is communicated with the outside, the other end of the mounting hole is adjacent to the cold runner 101, and the mounting hole is used for mounting a temperature sensor.

The adjusting part 2 is arranged between the cold runner plate 104 and the cold runner cover plate 105, and the moving direction of the adjusting part 2 is suitable for the orthogonal arrangement of the flow direction of the sizing material in the runner 1012.

Adjusting part 2 includes a plurality of regulation poles 201, it is the threaded rod to adjust pole 201, a plurality of one ends of adjusting pole 201 are located body 1 inside and at least part can stretch into and keep away from the area size of subchannel 1012 in order to adjust the through-flow cross-section of subchannel 1012, a plurality of other ends of adjusting pole 201 stretch out body 1, a plurality of regulation poles 201 and a plurality of subchannel 1012 one-to-one, the one end that adjusts pole 201 and stretch out body 1 is equipped with adjusting nut 202, adjusting nut 202 cover is established on adjusting pole 201, it removes along left right direction to drive regulation pole 201 through rotating adjusting nut 202, thereby adjust the pole 201 and be located the one end of body 1 inside can stretch into and keep away from the area size of subchannel 1012 in order to adjust the through-flow cross.

The operation of the cold runner flow dividing device of the embodiment of the present invention is described below with reference to fig. 1 to 3.

After closing cold runner plate 104 and cold runner apron 105, cold runner plate 104 and cold runner apron 105 contact, first recess and second recess are arranged relatively in order to form cold runner 101, third recess and fourth recess are arranged relatively in order to form feed inlet 102, the material passes through in feed inlet 102 gets into the sprue 1011 in cold runner 101, and flow to a plurality of subchannel 1012 through sprue 1011, finally discharge cold runner diverging device through a plurality of discharge gates 103, when needs adjust material flow, only need externally rotate adjusting nut 202, drive adjusting rod 201 through rotating adjusting nut 202 and remove along the left and right direction, thereby adjust the one end that pole 201 is located body 1 inside and can stretch into and keep away from subchannel 1012 in order to adjust the through-flow cross-section area size of subchannel 1012.

A cold runner mold according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 1 to 5, the cold runner mold according to the embodiment of the present invention includes a first mold plate 3, a second mold plate 4, a cold runner flow dividing device, and a glue feeding device 8. As shown in fig. 1, the cold runner flow dividing device, the first mold plate 3 and the second mold plate 4 are sequentially arranged in the up-down direction, the cold runner flow dividing device and the first mold plate 3 are arranged at intervals in the up-down direction, the first mold plate 3 and the second mold plate 4 can be contacted and separated, when the first mold plate 3 is contacted with the second mold plate 4, injection molding can be performed, and when the first mold plate 3 is separated from the second mold plate 4, a molded product can be conveniently taken out of the cavity 7.

The first template 3 is internally provided with a first mold core 5, the second template 4 is internally provided with a second mold core 6, the first template 3 and the second template 4 can be contacted and separated, and when the first template 3 is contacted with the second template 4, the first template 3 and the second template 4 are superposed, and the first mold core 5 and the second mold core 6 define a mold cavity 7. As shown in fig. 1 and 4, the first mold core 5 and the second mold core 6 are disposed opposite to each other, and the first mold core 5 and the second mold core 6 define a cavity 7.

The cold runner flow dividing device is the cold runner flow dividing device according to the embodiment of the invention, and the cold runner flow dividing device is arranged on one side of the first template 3 far away from the second template 4. As shown in fig. 1, the cold runner distribution device is provided above the first die plate 3, and the cold runner distribution device is spaced from the first die plate 3 in the up-down direction.

Preferably, a heat insulation plate 13 and a backing plate 14 are further arranged between the cold runner plate 104 and the first template 3, and the cold runner mold enables the cold runner plate 104 and the first template 3 to be arranged in a suspended manner by arranging the heat insulation plate 13 and the backing plate 14, so that heat conduction is reduced. And a cooling pipe is also arranged between the cold runner plate 104 and the first template 3 and is communicated with a first cooling pipeline and a second cooling pipeline in the cold runner flow dividing device.

The glue inlet device 8 is arranged in the first mold core 5, a discharge port 103 in the cold runner flow dividing device is communicated with one end of the glue inlet device 8, and the other end of the glue inlet device 8 is communicated with the mold cavity 7. As shown in fig. 1 and 5, the upper end of the glue inlet device 8 is communicated with a discharge port 103 in the cold runner flow dividing device, and the lower end of the glue inlet device 8 is communicated with the cavity 7. Preferably, the glue feeding devices 8 are multiple, and the positions and the number of the multiple glue feeding devices 8 are matched with those of the cavities 7.

According to the cold runner mold provided by the embodiment of the invention, the cold runner shunting device is arranged, so that the material in the runner is prevented from being solidified, the waste of the material is reduced, the cost is saved, the molding period is shortened, the production efficiency is improved, the flow of different sub-runners 1012 can be adjusted, the balance of each sub-runner 1012 is maintained, the adjusting part 2 is adjusted outside the body 1, the flow of the sub-runners 1012 can be conveniently adjusted, the time consumption for adjusting the flow is reduced, and the adjusting efficiency is improved.

In some embodiments, the glue feeding device 8 comprises a feeding sleeve 801, a valve needle 802 and a sealing component 803.

An injection passage 8011 is arranged in the feeding sleeve 801, and the injection passage 8011 comprises a feeding end and a discharging end. As shown in fig. 4, a feeding end of the injection passage 8011 is provided at an upper end of the feeding housing 801, the feeding end of the injection passage 8011 is communicated with the discharge port 103 of the cold runner flow dividing device, a discharging end of the injection passage 8011 is provided at a lower end of the feeding housing 801, and the discharging end of the injection passage 8011 is communicated with the cavity 7.

The valve needle 802 is disposed through the feeding sleeve 801 and at least partially located in the injection passage 8011, and the valve needle 802 is movable relative to the feeding sleeve 801 in a length direction (up and down direction as shown in fig. 5) of the feeding sleeve 801. As shown in fig. 4, the lower portion of the valve needle 802 is inserted into the feed sleeve 801 and is movable in the up-down direction.

A sealing member 803 is provided in the feed housing 801 and connected to the feed housing 801, the sealing member 803 being spaced from the injection passage 8011 in the longitudinal direction of the feed housing 801, and the sealing member 803 being adjacent the feed end of the injection passage 8011, the valve needle 802 projecting through the sealing member 803 into the feed housing 801. As shown in fig. 4, the sealing member 803 is disposed within the feed housing 801 and the sealing member 803 is disposed above the feed end of the injection passage 8011 with the valve needle 802 extending through the sealing assembly into the feed housing 801. The cold runner mold is provided with the sealing component 803, so that the material overflow of the valve needle 802 during the up-and-down movement is avoided, and the adverse effect on the subsequent production is reduced.

In some embodiments, the sealing component 803 includes a first non-return rubber sleeve 8031 and a second non-return rubber sleeve 8032, the first non-return rubber sleeve 8031 and the second non-return rubber sleeve are both disposed on the valve needle 802, and the first non-return rubber sleeve 8031 and the second non-return rubber sleeve are spaced apart from each other in a length direction of the feeding sleeve 801. As shown in fig. 4, the first non-return rubber sleeve 8031 and the second non-return rubber sleeve 8032 are both disposed above the injection passage 8011, and the first non-return rubber sleeve 8031 is located above the second non-return rubber sleeve 8032.

Preferably, the cross-sectional area of the first non-return rubber sleeve 8031 is constant along the length direction of the feeding sleeve 801 compared with the cross-sectional area of the second non-return rubber sleeve 8032 adjacent to the feeding end of the injection channel 8011, and the cross-sectional area of at least a part of the second non-return rubber sleeve 8032 is gradually reduced along the direction toward the first non-return rubber sleeve 8031 (the upward-downward direction as shown in fig. 5). It is understood that the cross-sectional area of the first non-return rubber sleeve 8031 may also be gradually reduced in a direction towards the first non-return rubber sleeve 8031. The cross-sectional area of the second non-return rubber sleeve 8032 in the sealing component 803 is gradually reduced in the direction from top to bottom, so that extrusion force towards the axial direction of the valve needle 802 is favorably formed, the sealing performance of the feeding sleeve 801 is improved, and material overflow during up-and-down movement of the valve needle 802 is further avoided.

In some embodiments, the cold runner mold according to embodiments of the present invention further includes a thermal sleeve 804, the thermal sleeve 804 is coupled to the feed sleeve 801, and the thermal sleeve 804 is disposed adjacent the discharge end of the injection passage 8011, with the valve needle 802 extending through the thermal sleeve 804. As shown in fig. 5, the heat insulating sleeve 804 is provided at the lower end of the feed sleeve 801, and the valve needle 802 penetrates the heat insulating sleeve 804 in the vertical direction. The cold runner mold can avoid the problem of blockage of a glue opening caused by solidification of materials at the discharge end of the injection passage 8011 through the heat insulation sleeve 804.

In some embodiments, the cold runner mold according to the embodiments of the present invention further includes a cooling water jacket 805, the cooling water jacket 805 is sleeved on the feeding sleeve 801, and the cooling water jacket 805 is provided with a water inlet and a water outlet. The cold runner mold is provided with the cooling water jacket 805, so that the periphery of the feeding sleeve 801 can be cooled, and the material is prevented from being solidified in the feeding sleeve 801.

In some embodiments, the cold runner mold further comprises a pressing assembly 9 and a support assembly 10, the second mold plate 4 is provided on the support assembly 10, and the pressing assembly 9 is provided on a side of the cold runner flow dividing device away from the first mold plate 3 to press the cold runner flow dividing device and the first mold plate 3 together. As shown in fig. 1, the pressing assembly 9 is disposed above the cold runner flow dividing device, and the supporting assembly 10 is disposed below the second mold plate 4.

As shown in fig. 1, the hold-down assembly 9 includes a first square plate 901 and a plurality of first square blocks 902, the first square plate 901 is provided above the cold runner cover plate 105, the plurality of first square blocks 902 are provided between the cold runner cover plate 105 and the first square plate 901, and lower end faces of the plurality of first square blocks 902 are in contact with an upper end face of the cold runner cover plate 105, the plurality of first square blocks 902 are arranged at intervals in the left-right direction, and the first square plate 901 is provided between the plurality of first square blocks 902. As shown in fig. 1, the number of the first blocks 902 is two, and it is understood that the number of the first blocks 902 is not limited thereto. According to the cold runner mold provided by the embodiment of the invention, the pressing assembly 9 is arranged, so that the connection between the cold runner plate 104 and the cold runner cover plate 105 is more stable, and the use stability of the mold is improved.

As shown in fig. 1, the support assembly 10 includes a second square plate 1001 and a plurality of second blocks 1002, the second square plate 1001 is disposed below the second form 4, the plurality of second blocks 1002 are disposed between the second square plate 1001 and the second form 4, upper end surfaces of the plurality of second blocks 1002 contact lower end surfaces of the second form 4, the plurality of second blocks 1002 are arranged at intervals in the left-right direction, and the second square plate 1001 is disposed between the plurality of second blocks 1002. As shown in fig. 1, the number of the second blocks 1002 is two, and it is understood that the number of the second blocks 1002 is not limited thereto. The cold runner mold can provide support for the second template 4 by arranging the support assembly 10, and the use stability of the mold is ensured.

In some embodiments, the cold runner mold according to embodiments of the present invention further comprises an ejection assembly 11, the ejection assembly 11 being configured to eject the molded article in the cavity 7.

As shown in fig. 1, the ejection assembly 11 is disposed between the two second blocks 1002, and the ejection assembly 11 includes a first push plate 1101, an ejector plate 1102, a plurality of ejector pins 1103, a plurality of first guide rods 1104 and a plurality of first springs 1105, the first push plate 1101 is disposed at the upper end of the second square plate 1001, the ejector plate 1102 is disposed at the upper end of the first push plate 1101, the plurality of ejector pins 1103 are disposed at the upper end of the ejector plate 1102, the upper ends of the plurality of ejector pins 1103 can extend into and be away from the cavity 7, and the positions and the number of the plurality of ejector pins 1103 correspond to the positions and the number of the cavities 7 one-to-one. The plurality of first guide bars 1104 are respectively arranged at four corners of the ejector plate 1102, the upper ends of the plurality of first guide bars 1104 are connected with the first template 3, the plurality of first springs 1105 are sleeved outside the plurality of first guide bars 1104, and the plurality of first guide bars 1104 and the plurality of first springs 1105 are in one-to-one correspondence.

In some embodiments, the cold runner mold according to embodiments of the present invention further comprises a drive assembly 12, the drive assembly 12 being configured to drive the valve pin 802 up and down.

As shown in fig. 1, the driving assembly 12 is disposed between two first blocks 902, and the driving assembly 12 includes a second push plate 1201, a valve needle plate 1202, a plurality of second guide rods 1203 and a plurality of second springs 1204, the second push plate 1201 is disposed at a lower end of the first push plate 901, the valve needle plate 1202 is disposed at a lower end of the second push plate 1201, the valve needle plate 1202 is disposed at a lower end of the valve needle plate 1202, the lower ends of the valve needles 802 are capable of extending into an injection passage 8011 in the feeding sleeve 801 and moving up and down, and positions and numbers of the valve needles 802 correspond to positions and numbers of the glue feeding devices 8 one by one. The plurality of second guide rods 1203 are respectively arranged at four corners of the valve needle plate 1202, the lower ends of the plurality of second guide rods 1203 are connected with the second mold plate 4, the plurality of second springs 1204 are sleeved outside the plurality of valve needles 802, and the plurality of valve needles 802 and the plurality of second springs 1204 are in one-to-one correspondence.

A cold runner mold of some specific examples of the present invention is described below with reference to fig. 1 to 5.

The cold runner mold according to the embodiment of the invention comprises a first mold plate 3, a second mold plate 4, a cold runner flow dividing device, a glue feeding device 8, a heat insulation sleeve 804, a cooling water jacket 805, a pressing assembly 9, a supporting assembly 10, an ejecting assembly 11 and a driving assembly 12.

The cold runner flow dividing device, the first template 3 and the second template 4 are sequentially arranged along the up-down direction, the cold runner flow dividing device and the first template 3 are arranged at intervals in the up-down direction, and the first template 3 and the second template 4 can be contacted and separated.

An insulation plate 13 and a backing plate 14 are provided between the cold runner plate 104 and the first mold plate 3.

The first template 3 is internally provided with a first mold core 5, the second template 4 is internally provided with a second mold core 6, the first template 3 and the second template 4 can be contacted and separated, and when the first template 3 is contacted with the second template 4, the first template 3 and the second template 4 are superposed, and the first mold core 5 and the second mold core 6 define a mold cavity 7.

Advance mucilage binding and put 8 and establish in first mould benevolence 5, discharge gate 103 among the cold runner diverging device with advance mucilage binding and put 8 upper end intercommunication, advance the lower extreme and the die cavity 7 intercommunication of mucilage binding and put 8.

The glue feeding device 8 comprises a feeding sleeve 801, a valve needle 802 and a sealing part 803.

An injection passage 8011 is arranged in the feeding sleeve 801, and the injection passage 8011 comprises a feeding end and a discharging end. The feeding end of the injection channel 8011 is arranged at the upper end of the feeding sleeve 801, the feeding end of the injection channel 8011 is communicated with the discharge hole 103 in the cold runner flow dividing device, the discharging end of the injection channel 8011 is arranged at the lower end of the feeding sleeve 801, and the discharging end of the injection channel 8011 is communicated with the cavity 7.

The valve needle 802 is disposed through the feeding sleeve 801 and at least partially located in the injection passage 8011, and the valve needle 802 is movable in an up-and-down direction with respect to the feeding sleeve 801.

A sealing element 803 is provided in the feed housing 801 and is connected to the feed housing 801, and the sealing element 803 is provided above the feed end of the injection passage 8011, through which sealing element 803 the valve needle 802 protrudes into the feed housing 801.

The sealing component 803 includes a first non-return rubber sleeve 8031 and a second non-return rubber sleeve 8032, the first non-return rubber sleeve 8031 and the second non-return rubber sleeve are both sleeved on the valve needle 802, the first non-return rubber sleeve 8031 and the second non-return rubber sleeve 8032 are both arranged above the injection channel 8011, and the first non-return rubber sleeve 8031 is located above the second non-return rubber sleeve 8032.

The heat insulating sleeve 804 is connected to the feeding sleeve 801, the heat insulating sleeve 804 is provided at the lower end of the feeding sleeve 801, and the valve needle 802 penetrates the heat insulating sleeve 804 in the vertical direction.

The cooling water jacket 805 is sleeved on the feeding sleeve 801, and a water inlet and a water outlet are formed in the cooling water jacket 805.

The pressing assembly 9 is arranged above the cold runner flow dividing device, the pressing assembly 9 comprises a first square plate 901 and a plurality of first square blocks 902, the first square plate 901 is arranged above the cold runner cover plate 105, the plurality of first square blocks 902 are arranged between the cold runner cover plate 105 and the first square plate 901, the lower end faces of the plurality of first square blocks 902 are in contact with the upper end face of the cold runner cover plate 105, the plurality of first square blocks 902 are arranged at intervals in the left-right direction, and the first square plate 901 is arranged between the plurality of first square blocks 902.

The supporting component 10 is arranged below the second formwork 4, the supporting component 10 comprises a second square plate 1001 and a plurality of second square blocks 1002, the second square plate 1001 is arranged below the second formwork 4, the second square blocks 1002 are arranged between the second square plate 1001 and the second formwork 4, the upper end surfaces of the second square blocks 1002 are in contact with the lower end surface of the second formwork 4, the second square blocks 1002 are arranged at intervals in the left-right direction, and the second square plate 1001 is arranged between the second square blocks 1002.

The ejection assembly 11 is arranged between the two second blocks 1002, and the ejection assembly 11 includes a first push plate 1101, an ejector plate 1102, a plurality of ejector pins 1103, a plurality of first guide rods 1104 and a plurality of first springs 1105, the first push plate 1101 is arranged at the upper end of the second square plate 1001, the ejector plate 1102 is arranged at the upper end of the first push plate 1101, the plurality of ejector pins 1103 are arranged at the upper end of the ejector plate 1102, the upper ends of the plurality of ejector pins 1103 can extend into and can be far away from the cavity 7, and the positions and the number of the plurality of ejector pins 1103 correspond to the positions and the number of the cavities 7 one to one. The plurality of first guide bars 1104 are respectively arranged at four corners of the ejector plate 1102, the upper ends of the plurality of first guide bars 1104 are connected with the first template 3, the plurality of first springs 1105 are sleeved outside the plurality of first guide bars 1104, and the plurality of first guide bars 1104 and the plurality of first springs 1105 are in one-to-one correspondence.

The driving assembly 12 is disposed between the two first blocks 902, and the driving assembly 12 includes a second push plate 1201, a valve needle plate 1202, a plurality of second guide rods 1203 and a plurality of second springs 1204, the second push plate 1201 is disposed at a lower end of the first push plate 901, the valve needle plate 1202 is disposed at a lower end of the second push plate 1201, a plurality of valve needles 802 are disposed at a lower end of the valve needle plate 1202, the lower ends of the plurality of valve needles 802 can extend into the injection passage 8011 in the feeding sleeve 801 and can move up and down, and positions and numbers of the plurality of valve needles 802 correspond to positions and numbers of the glue feeding devices 8 one to one. The plurality of second guide rods 1203 are respectively arranged at four corners of the valve needle plate 1202, the lower ends of the plurality of second guide rods 1203 are connected with the second mold plate 4, the plurality of second springs 1204 are sleeved outside the plurality of valve needles 802, and the plurality of valve needles 802 and the plurality of second springs 1204 are in one-to-one correspondence.

The operation of the cold runner mold of the embodiment of the present invention is described below with reference to fig. 1 to 5.

The material enters a main runner 1011 in a cold runner 101 through a feeding hole 102 in a cold runner flow dividing device according to an embodiment of the invention, and flows to a plurality of branch runners 1012 through the main runner 1011, and finally enters a feeding sleeve 801 in a glue feeding device 8 through a plurality of discharging holes 103, after the material flows into an injection channel 8011 in the feeding sleeve 801, a valve needle 802 moves downwards, the material in the injection channel 8011 is pressed into a cavity 7, and after maintaining the shape for a certain time, a first mold plate 3 and the valve needle 802 move upwards, an ejector needle 1103 moves upwards, and a molded product in the cavity 7 is ejected out of the cavity 7, so that the product manufacturing is completed.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A cold runner flow splitting device, comprising:

the cold runner comprises a main runner and a plurality of sub-runners, one end of each sub-runner is communicated with the main runner, the other end of each sub-runner is provided with a discharge hole, the plurality of sub-runners are arranged at intervals, and the feed port is communicated with the main runner and used for communicating the main runner with the outside;

the regulating device comprises a body, a plurality of regulating parts and a plurality of sub-runners, wherein one end of each regulating part can at least partially extend into and be far away from the sub-runners so as to regulate the area of the through-flow cross section of the sub-runners, the other end of each regulating part extends out of the body, and the regulating parts correspond to the sub-runners one to one.

2. The cold runner flow dividing device of claim 1, wherein the body comprises a cold runner plate and a cold runner cover plate, the cold runner cover plate is arranged on the cold runner plate, the cold runner plate is provided with a first groove and a third groove which are communicated with each other, the cold runner cover plate is provided with a second groove and a third groove which are communicated with each other, the first groove and the second groove are oppositely arranged to form the cold runner, the third groove and the fourth groove are oppositely arranged to form the feed inlet, and the discharge outlet is arranged on the cold runner plate.

3. The cold runner flow divider of claim 2, wherein said cold runner plate is provided with a plurality of first cooling lines for cooling said cold runner plate, and said cold runner cover plate is provided with a plurality of second cooling lines for cooling said cold runner cover plate.

4. The cold runner flow divider of claim 3, wherein a temperature sensor is disposed within said cold runner plate and/or said cold runner cover plate, said temperature sensor being disposed adjacent to said cold runner.

5. The cold runner flow divider of claim 4, wherein said adjustment member is disposed between said cold runner plate and said cold runner cover plate, and wherein said adjustment member is moved in a direction suitable for providing an orthogonal arrangement of the flow direction of the rubber compound in said runner.

6. The cold runner flow splitting device of any one of claims 1 to 5, wherein the adjusting means comprises a plurality of adjusting rods, one end of each of the adjusting rods is at least partially extendable into and away from the corresponding sub-runner to adjust the area of the flow cross section of the corresponding sub-runner, the other end of each of the adjusting rods extends out of the main body, and the adjusting rods are in one-to-one correspondence with the corresponding sub-runners.

7. The cold runner flow divider of any one of claims 1-5, wherein the junction of the main runner and the plurality of sub-runners is provided with an arcuate transition section.

8. A cold runner mold, comprising:

the die comprises a first die plate and a second die plate, wherein a first die core is arranged in the first die plate, a second die core is arranged in the second die plate, the first die plate and the second die plate can be contacted and separated, when the first die plate is contacted with the second die plate, the first die plate and the second die plate are superposed, and a die cavity is defined by the first die core and the second die core;

the cold runner flow dividing device is as claimed in any one of claims 1 to 6 and is arranged on one side of the first template, which is far away from the second template;

and the glue inlet device is arranged in the first die core, the discharge port in the cold runner flow dividing device is communicated with one end of the glue inlet device, and the other end of the glue inlet device is communicated with the die cavity.

9. The cold runner mold of claim 8, wherein the glue injection device comprises:

the feeding sleeve is internally provided with an injection channel, and the injection channel comprises a feeding end and a discharging end;

the valve needle is arranged on the feeding sleeve in a penetrating mode and is located at least partially in the injection channel, and the valve needle can move relative to the feeding sleeve along the length direction of the feeding sleeve;

a sealing member disposed within and connected to the feeder sleeve, the sealing member being spaced from the injection passage in a direction along the length of the feeder sleeve and adjacent the feed end of the injection passage, the valve needle extending through the sealing member into the feeder sleeve.

10. The cold runner mold of claim 9, wherein the sealing component comprises a first non-return rubber sleeve and a second non-return rubber sleeve, the first non-return rubber sleeve and the second non-return rubber sleeve are both sleeved on the valve needle, and the first non-return rubber sleeve and the second non-return rubber sleeve are arranged at intervals in a length direction of the feeding sleeve.

11. The cold runner mold of claim 10, wherein the cross-sectional area of the first non-return rubber sleeve is constant along the length of the feeding sleeve compared to the cross-sectional area of the second non-return rubber sleeve adjacent to the feeding end of the injection channel, and at least a portion of the cross-sectional area of the second non-return rubber sleeve is gradually reduced along the direction toward the first non-return rubber sleeve.

12. The cold runner mold of any one of claims 9-11, further comprising a heat shield coupled to the feed sleeve and disposed adjacent the discharge end of the injection passage, the valve pin extending through the heat shield.

13. The cold runner mold of any one of claims 9-11, further comprising a cooling water jacket, wherein the cooling water jacket is sleeved on the feeding sleeve, and the cooling water jacket is provided with a water inlet and a water outlet.

14. The cold runner mold of claim 8, further comprising a hold down assembly and a support assembly, the second mold plate being provided on the support assembly, the hold down assembly being provided on a side of the cold runner manifold remote from the first mold plate to hold the cold runner manifold together with the first mold plate.

15. The cold runner mold of claim 8, further comprising an ejection assembly to eject a molded article in the cavity.