CN116494480A - Rubber cold runner system - Google Patents
Rubber cold runner system Download PDFInfo
- Publication number
- CN116494480A CN116494480A CN202310278772.0A CN202310278772A CN116494480A CN 116494480 A CN116494480 A CN 116494480A CN 202310278772 A CN202310278772 A CN 202310278772A CN 116494480 A CN116494480 A CN 116494480A
- Authority
- CN
- China
- Prior art keywords
- rubber
- runner
- guide piece
- installation cavity
- cooling oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009434 installation Methods 0.000 claims abstract description 31
- 239000003292 glue Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 24
- 238000005192 partition Methods 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- B29C45/2737—Heating or cooling means therefor
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention discloses a rubber cold runner system, which comprises a nozzle and further comprises: the nozzle is arranged on the mounting assembly, a glue inlet is formed in the mounting assembly, and a first mounting cavity is formed in the mounting assembly; the guide piece is arranged in the first installation cavity, a gap is preset between the guide piece and the first installation cavity, a rubber runner is arranged in the guide piece, an inlet of the rubber runner is connected with the rubber inlet, and an outlet of the rubber runner is connected with the nozzle; the supporting piece is arranged in the gap and tightly abuts against the guide piece and the inner wall of the first installation cavity. According to the invention, the gap is preset between the guide piece and the first installation cavity, and the supporting piece arranged in the gap reduces the contact area between the guide piece and the fixing component, so that heat can be transferred between the guide piece and the fixing component only through the supporting piece, the heat conduction between the fixing component and the guide piece is reduced, and the influence of the hot plate temperature of the vulcanizing equipment on the rubber cold runner system is further reduced.
Description
Technical Field
The invention relates to the field of rubber injection molding, in particular to a rubber cold runner system.
Background
The rubber vulcanization mold comprises a hot runner mold and a cold runner mold, wherein the cold runner mold is required to be placed between hot plates of vulcanization equipment, so that direct heat transfer between the inside of the mold and the runner is isolated, and the runner is kept at normal temperature or at a low temperature relative to the inside of the mold, so that raw materials in the runner can be continuously used in the subsequent processing process.
However, at present, more heat conduction exists between the inside of a traditional rubber injection cold runner mold and a runner, and a cold runner system has certain defects, and the defects are mainly represented by large temperature difference of each nozzle, uneven temperature of rubber in the runner can cause that the flash of a rubber product is not easy to control to a certain extent, and the rubber is possibly blocked in the cold runner system under extreme conditions, so that the phenomenon of product shortage is caused, and the system cannot work normally.
Therefore, it is necessary to design a rubber cold runner system that reduces heat conduction between the inside of the mold and the runner, maintains the runner at a normal temperature or at a low temperature with respect to the inside of the mold, and maintains the temperature of each nozzle uniform.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a rubber cold runner system.
The invention provides a rubber cold runner system, which comprises a nozzle and further comprises:
the nozzle is arranged on the mounting assembly, a glue inlet is formed in the mounting assembly, and a first mounting cavity is formed in the mounting assembly;
the guide piece is arranged in the first installation cavity, a gap is preset between the guide piece and the first installation cavity, a rubber runner is arranged in the guide piece, an inlet of the rubber runner is connected with the rubber inlet, and an outlet of the rubber runner is connected with the nozzle;
the supporting piece is arranged in the gap and tightly abuts against the guide piece and the inner wall of the first installation cavity, and is used for fixing and supporting the guide piece in the first installation cavity and reducing the contact area between the guide piece and the inner wall of the first installation cavity, and the supporting piece can be a heat insulation ring or a heat insulation block.
Preferably, the guide piece is further provided with a cooling oil flow passage, and the cooling oil flow passage is close to the rubber flow passage.
Preferably, the cooling oil flow passage is parallel to the rubber flow passage.
Preferably, the device further comprises an inserting pipe, a second installation cavity is further formed in the installation component, the inserting pipe is installed in the second installation cavity and extends out of the installation component, one end of the inserting pipe is connected with a cooling oil flow passage, and the other end of the inserting pipe is connected with an external mold temperature machine.
Preferably, a plurality of cooling oil flow passages are provided, and a plurality of cooling oil flow passages are provided on the outer periphery of the rubber flow passage.
Preferably, the cooling oil flow passage adopts a double-circulation structure design.
Preferably, the support is made of an insulating material.
Preferably, the fixing component comprises a first partition plate and a second partition plate, a first groove is formed in the first partition plate, a second groove is formed in the second partition plate, a first installation cavity is formed between the first groove and the second groove, and the guide piece is convenient to install or take out.
Preferably, the vulcanizing device further comprises a positioning ring, wherein the positioning ring is arranged at the rubber inlet, so that external vulcanizing equipment and the rubber inlet are conveniently positioned and connected.
Preferably, the device further comprises a belleville spring, wherein the belleville spring is arranged between the flow guide piece and the nozzle.
Preferably, the nozzle further comprises an end cover, wherein the end cover is arranged at the outlet of the flow guiding piece and used for fixing the nozzle.
Preferably, the flow guide is made of metal made of stainless steel or alloy steel.
Preferably, the nozzle is made of titanium alloy or other metal materials.
Preferably, 3 to 16 nozzles are arranged.
The rubber cold runner system provided by the invention has the following beneficial effects:
according to the invention, the gap is preset between the guide piece and the first installation cavity, and the support piece is arranged in the gap, so that the contact area between the guide piece and the fixing assembly is reduced, heat can be transferred between the guide piece and the fixing assembly only through the support piece, the heat conduction between the fixing assembly and the guide piece is reduced, and the influence of the hot plate temperature of the vulcanizing equipment on the rubber cold runner system is further reduced;
according to the invention, the cooling oil duct is arranged on the periphery of the rubber flow channel, and the periphery of the rubber flow path is provided with the oil way, so that an oil way rubber-covered way structure is formed, and the oil way adopts a double-circulation structure design, thereby being beneficial to balancing the temperature difference among all injection nozzles;
according to the invention, the first partition plate and the second partition plate which are easy to disassemble and assemble are arranged, so that the guide piece is conveniently installed in the first installation cavity and taken out.
Drawings
FIG. 1 is a front view partially in cross section of a rubber cold runner system according to the present invention;
FIG. 2 is a top view of the deflector and first separator according to the present invention;
FIG. 3 is a front partial cross-sectional view of the baffle, first baffle and second baffle of the present invention;
fig. 4 is a top cross-sectional view of the rubber runner proposed by the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In order to better understand the above technical scheme, the following detailed description of the technical scheme of the present invention will be given with reference to the accompanying drawings of the specification and the specific embodiments.
Referring to fig. 1 to 4, the rubber cold runner system provided by the invention comprises a fixing component, a flow guiding piece 4 and a heat insulation block 3, wherein the fixing component comprises a first partition plate 8 and a second partition plate 9, the first partition plate 8 is arranged above the second partition plate 9, a first groove is formed in the first partition plate 8, a second groove is formed in the second partition plate 9, the first groove is opposite to the second groove, a first installation cavity is formed between the first groove and the second groove, the flow guiding piece 4 is arranged in the first installation cavity, a gap is preset between the inner wall of the first installation cavity and the flow guiding piece 4, the width of the gap is 1.5 mm, a rubber runner 10 is arranged in the flow guiding piece 4, the heat insulation block 3 is made of a nonmetal material with low heat conductivity, the cross section of the flow guiding piece 4 is rectangular, one heat insulation block 3 is arranged at four corners of the rectangle, the heat insulation block 3 tightly abuts against the inner wall of the first installation cavity and the flow guiding piece 4, each four heat insulation blocks 3 are in one group, a plurality of groups of heat insulation blocks 3 are arranged between the inner wall of the first installation cavity and the adjacent heat insulation blocks 4 along the path direction of the flow guiding piece 4, and the distance between the two adjacent heat insulation blocks is equal.
In this embodiment, as shown in fig. 2, the air guide member 4 further comprises four injection nozzles 5, the air guide member 4 is made of stainless steel material by adopting a 3D printing technology, an inlet is formed in the center of the air guide member 4 and is communicated with the rubber runner 10, four outlets which are communicated with the rubber runner 10 are formed in the lower portion of the air guide member 4, a glue inlet 12 is formed in the center of the first partition plate 8, the glue inlet 12 is connected with the inlet, a positioning ring 1 is installed at the glue inlet 12, the positioning ring 1 is used for positioning between the glue inlet 12 and an external vulcanization device and is convenient for connecting the glue inlet 12 with the external vulcanization device, the four injection nozzles 5 are all installed below the second partition plate 9, each injection nozzle 5 is connected with one outlet, the injection nozzles 5 are made of titanium alloy material, a disc spring 6 is installed between the injection nozzle 5 and the air guide member 4, and an end cover 7 is arranged at the outlet of the air guide member 4, and the end cover 7 is used for fixing the injection nozzles 5.
Further, the flow guiding member 4 further has four cooling oil flow passages 11, the four cooling oil flow passages 11 are arranged around the rubber flow passage 10, are close to the rubber flow passage 10 and are parallel to the rubber flow passage 10, and the distance between every two adjacent cooling oil flow passages 11 is equal to form an oil-way rubber-coating structure, so that the temperature of the rubber flow passage 10 is reduced, and the rubber temperature in the rubber flow passage 10 is kept uniform.
Further, as shown in fig. 3, a circulation flow path is formed between two cooling oil flow paths 11 located at the left side of the rubber flow path 10, and another circulation flow path is formed between two cooling oil flow paths 11 located at the right side of the rubber flow path 10, so that the cooling oil flow paths 11 form a double circulation structure, which is beneficial to balancing the temperature difference between the nozzles 5.
Further, still include the grafting pipe 2, first baffle 8 is opened there is the third groove 13, and the second baffle 9 is opened there is the fourth groove, and the third groove 13 is relative with the fourth groove, forms the second installation cavity between third groove 13 and the fourth groove, and first installation cavity and second installation cavity intercommunication, the grafting pipe 2 is installed the second installation intracavity with preset the clearance between the inner wall of second installation cavity, grafting pipe 2 is equipped with two, and the one end of two grafting pipes 2 stretches out the second installation cavity is connected with outside mould temperature machine, and the other end of two grafting pipes 2 is connected with the cooling oil runner 11 that forms different circulation runners respectively to through the temperature of outside mould temperature machine control cooling oil runner 11, and then guarantee the normal flow of rubber.
The working principle of the invention is that rubber material is injected into the rubber inlet 12 from external vulcanizing equipment, enters the rubber runner 10 from the rubber inlet 12, enters the injection nozzle 5 along the rubber runner 10 and is split into various cavities of the die. In this process, the rubber injection temperature of each injection nozzle 5 is balanced and the flow of rubber is ensured by the insertion tube 2 connected with an external mold temperature machine, namely by the cooling oil entering the cooling oil flow channel 11.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. A rubber cold runner system comprising a nozzle (5), characterized in that it further comprises:
the injection nozzle (5) is arranged on the mounting assembly, the mounting assembly is provided with a glue inlet (12), and a first mounting cavity is formed in the mounting assembly;
the guide piece (4) is arranged in the first installation cavity, a gap is preset between the guide piece (4) and the first installation cavity, a rubber runner (10) is arranged in the guide piece (4), an inlet of the rubber runner (10) is connected with the rubber inlet (12), and an outlet of the rubber runner (10) is connected with the nozzle (5);
and the supporting piece (3) is arranged in the gap and tightly abuts against the guide piece (4) and the inner wall of the first installation cavity.
2. The rubber cold runner system according to claim 1, characterized in that the flow guide (4) further has a cooling oil runner (11) therein, the cooling oil runner (11) being adjacent to the rubber runner (10).
3. The rubber cold runner system according to claim 2, characterized in that the cooling oil runner (11) is parallel to the rubber runner (10).
4. The rubber cold runner system according to claim 2, further comprising a plug tube (2), wherein the mounting assembly is further provided with a second mounting cavity therein, the plug tube (2) is mounted in the second mounting cavity and extends out of the second mounting cavity, and one end of the plug tube (2) is communicated with the cooling oil runner (11).
5. The rubber cold runner system according to claim 2, characterized in that the cooling oil runner (11) is provided in plurality, a plurality of cooling oil runners (11) being provided around the rubber runner (10).
6. A rubber cold runner system according to claim 1, characterized in that the support (3) is made of a heat insulating material.
7. The rubber cold runner system according to claim 1, wherein the fixing assembly comprises a first partition plate (8) and a second partition plate (9), a first groove is formed in the first partition plate (8), a second groove is formed in the second partition plate (9), and a first installation cavity is formed between the first groove and the second groove.
8. The rubber cold runner system according to claim 1, further comprising a positioning ring (1), the positioning ring (1) being mounted at the rubber inlet (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310278772.0A CN116494480A (en) | 2023-03-21 | 2023-03-21 | Rubber cold runner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310278772.0A CN116494480A (en) | 2023-03-21 | 2023-03-21 | Rubber cold runner system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116494480A true CN116494480A (en) | 2023-07-28 |
Family
ID=87323819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310278772.0A Pending CN116494480A (en) | 2023-03-21 | 2023-03-21 | Rubber cold runner system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116494480A (en) |
-
2023
- 2023-03-21 CN CN202310278772.0A patent/CN116494480A/en active Pending
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |