CN112848174A - Control device for ultrahigh mold temperature of injection mold - Google Patents
Control device for ultrahigh mold temperature of injection mold Download PDFInfo
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- CN112848174A CN112848174A CN201911187770.0A CN201911187770A CN112848174A CN 112848174 A CN112848174 A CN 112848174A CN 201911187770 A CN201911187770 A CN 201911187770A CN 112848174 A CN112848174 A CN 112848174A
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- mold
- temperature
- mold plate
- electric heating
- control device
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Links
- 238000002347 injection Methods 0.000 title claims abstract description 21
- 239000007924 injection Substances 0.000 title claims abstract description 21
- 238000005485 electric heating Methods 0.000 claims abstract description 41
- 239000003292 glue Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229920006247 high-performance elastomer Polymers 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- 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
-
- 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
- B29C45/7331—Heat transfer elements, e.g. heat pipes
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76732—Mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a control device for ultrahigh mold temperature of an injection mold, wherein the injection mold is provided with a first mold plate and a second mold plate which are arranged oppositely, the inner side surfaces of the first mold plate and the second mold plate are respectively provided with a mold core and a mold cavity, the control device comprises electric heating wires which are respectively arranged in the first mold plate and the second mold plate, temperature sensors which are respectively used for sensing the temperature of the first mold plate and the temperature of the second mold plate, and connectors which are respectively arranged on the end surfaces of the first mold plate and the second mold plate; the electric heating wire in the first template surrounds the mold core, the electric heating wire in the second template surrounds the mold cavity, and the electric heating wire and the temperature sensor are both electrically connected with the connector. Compared with the prior art, the invention solves the potential safety hazard, improves the accuracy of the temperature control of the die and reduces the deviation.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a control device for an ultrahigh mold temperature of an injection mold.
Background
At present, the mold temperature control of an injection mold is basically controlled by heating a liquid medium (such as water or temperature-resistant oil) by using a mold temperature controller and then connecting the liquid medium to a water channel system of the injection mold by a pipeline in a pressurizing manner for heat conduction. The control mode is very convenient at medium and low mold temperature (such as 20-80 ℃), but is not easy to control at high mold temperature (80-120 ℃) or ultrahigh mold temperature (above 120 ℃), because the control mode is carried out by using the method at high temperature and high pressure (the water temperature is not easy to rise, and the temperature-resistant oil is not environment-friendly), and pipelines are particularly easy to break in the process, so that the control mode has great potential safety hazard.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing a control device for controlling an ultra-high mold temperature of an injection mold. The potential safety hazard is solved, the accuracy of the temperature control of the die is improved, and the deviation is reduced.
The purpose of the invention can be realized by the following technical scheme:
a control device for ultrahigh mold temperature of an injection mold is provided with a first mold plate and a second mold plate which are arranged oppositely, wherein the inner side surfaces of the first mold plate and the second mold plate are respectively provided with a mold core and a mold cavity; the electric heating wire in the first template surrounds the mold core, the electric heating wire in the second template surrounds the mold cavity, and the electric heating wire and the temperature sensor are both electrically connected with the connector.
Preferably, the inner side surface of the first template is provided with at least one circle of groove surrounding the mold core, the inner side surface of the second template is provided with at least one circle of groove surrounding the mold cavity, and the electric heating wire is arranged in the groove and fixed through heat-conducting glue filled in the groove.
Preferably, the inner side surface of the first template is provided with a plurality of circles of grooves for surrounding the mold core, and the inner side surface of the second template is provided with a plurality of circles of grooves for surrounding the mold cavity.
Preferably, the width of the groove matches with the diameter of the electric heating wire, and the depth of the groove is larger than the diameter of the electric heating wire.
Preferably, the heat-conducting glue is a curable heat-conducting glue, and comprises a heat-conducting pouring sealant or a curable heat-conducting gel.
The heat-conducting glue is condensed by the moisture in the air to release low molecules to cause crosslinking and curing, and is vulcanized into a high-performance elastomer. The good-adhesion heat-conducting adhesive has excellent cold and heat alternation resistance, aging resistance and electrical insulation performance. And has excellent moisture-proof, shock-proof, corona-resistant, electric leakage-resistant and chemical medium-resistant properties. Can be continuously used at-60 to 280 ℃ and keeps the performance. Does not swell and has good adhesion to most metallic and non-metallic materials.
When the electric heating wire is installed, the electric heating wire is firstly arranged in the groove, and then the heat conducting glue is poured. Although the heat conductivity coefficient of the heat-conducting glue is larger, the heat transfer efficiency is not as high as that of the electric heating wire directly contacting the template. The heat-conducting glue has the significance of avoiding poor heat conduction caused by the existence of air.
Preferably, the heat conducting glue is 1-2 mm higher than the surface of the mold after being cured. The heat-conducting glue is a high-performance elastomer after being cured, and the die assembly cannot be influenced. The heat conducting glue is compressed during die assembly, so that the electric heating wire and the groove wall are contacted more closely, and the heat conducting efficiency is improved.
Further preferably, the electric heating wires on the first die and the electric heating wires on the second die are staggered with each other. The uniformity of heating can be improved, and the electric heating wires of the first die and the second die are prevented from interfering with each other.
Preferably, the connector is a plug-in connector.
Preferably, the temperature sensor is inserted into the first template and the second template.
Preferably, the inner side surfaces of the first template and the second template are provided with temperature sensing grooves, and the temperature sensors are arranged in the temperature sensing grooves.
Compared with the prior art, the invention has the following beneficial effects:
1. the potential safety hazard is solved, the pipeline leakage possibly caused by high temperature and high pressure in the prior art is avoided, and the occurrence of safety accidents is predicted from the root.
2. The novel control device is environment-friendly, does not use media such as water or temperature-resistant oil, and has an improvement effect on environmental pollution.
3. The working efficiency is improved, the use of the new system reduces the required dozens or even dozens of groups of pipeline connecting steps to the step of only connecting plugs, the preparation time and the labor intensity are greatly reduced, and the system reliability is improved.
4. The heating temperature is high, and the temperature within 100 ℃ and 200 ℃ can be safely and reliably controlled.
5. The temperature control precision is reduced to be within 2 ℃ from the deviation of more than 10 ℃.
6. Low cost and convenient maintenance.
Drawings
FIG. 1 is a schematic structural diagram of the invention during mold closing;
FIG. 2 is a schematic view of a first template of the present invention;
FIG. 3 is a schematic cross-sectional view of the first form of the present invention at the location of the electrical heating wire;
FIG. 4 is a schematic view of a second template of the present invention.
In the figure, 1 is a first template, 11 is a mold core, 2 is a second template, 21 is a mold cavity, 3 is an electric heating wire, 4 is a temperature sensor, 5 is a connector, 6 is a groove, and 7 is heat-conducting glue.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1
A control device for ultrahigh mold temperature of an injection mold is shown in figures 1-4, the injection mold is provided with a first mold plate 1 and a second mold plate 2 which are oppositely arranged, the inner side surfaces of the first mold plate 1 and the second mold plate 2 are respectively provided with a mold core 11 and a mold cavity 21, the control device comprises electric heating wires 3 which are respectively arranged in the first mold plate 1 and the second mold plate 2, temperature sensors 4 which are respectively used for sensing the temperature of the first mold plate 1 and the temperature of the second mold plate 2, and connectors 5 which are respectively arranged on the end surfaces of the first mold plate 1 and the second mold plate 2; electric heating wire 3 in first template 1 surrounds mold core 11 and sets up, and electric heating wire 3 in second template 2 surrounds die cavity 21 and sets up, and electric heating wire 3 and temperature sensor 4 all with connector 5 electric connection.
More specifically: the inner side surface of the first template 1 is provided with at least one circle of groove 6 surrounding the mold core 11, the inner side surface of the second template 2 is provided with at least one circle of groove 6 surrounding the mold cavity 21, and the electric heating wire 3 is arranged in the groove 6 and fixed through the heat-conducting glue 7 filled in the groove 6. Preferably, the first platen 1 is provided with a plurality of (in this example two) turns of the groove 6 surrounding the mold core 11 on the inside and the second platen 2 is provided with a plurality of (in this example two) turns of the groove 6 surrounding the mold cavity 21 on the inside, as shown in fig. 2 and 4. The width of the groove 6 is matched with the diameter of the electric heating wire 3, and the depth of the groove 6 is larger than the diameter of the electric heating wire 3. This can increase the contact area of the electric heating wire 3 with the inner side wall of the recess 6 (i.e., the mold plate) to increase the heat transfer efficiency, as shown in fig. 3.
The heat conducting adhesive 7 in this embodiment is a curable heat conducting adhesive, and a heat conducting potting adhesive or a curable heat conducting gel which can satisfy the ultra-high mold temperature condition in the prior art can be adopted. After the heat-conducting glue 7 is cured, the height of the heat-conducting glue is 1-2 mm higher than the surface of the mold, as shown in figure 3. The heat-conducting glue is a high-performance elastomer after being cured, and the die assembly cannot be influenced. The heat conducting glue is compressed during die assembly, so that the electric heating wire and the groove wall are contacted more closely, and the heat conducting efficiency is improved.
When the electric heating wire is installed, the electric heating wire 3 is firstly arranged in the groove 6, and then the heat conducting glue 7 is poured. The heat conduction glue 7 has a larger heat conduction coefficient, but has higher heat transfer efficiency than the direct contact between the electric heating wire 3 and the template. The heat conductive glue 7 is present in the sense that poor heat conduction due to the presence of air is avoided. It is further preferred that the electric heating wires 3 on the first die 1 and the electric heating wires 3 on the second die 2 are staggered with respect to each other. Firstly, the uniformity of heating can be improved, and secondly, the mutual interference of the electric heating wires 3 of the first die 1 and the second die 2 is avoided.
The connector 5 in this embodiment may be a plug-in type connector in the prior art, so as to be conveniently connected with a temperature control box and other devices.
The temperature sensor 4 may be inserted into the first and second mold plates 1 and 2. Temperature sensing grooves may be formed in the inner side surfaces of the first template 1 and the second template 2, and the temperature sensor 4 may be disposed in the temperature sensing grooves. The position of the temperature sensor 4 is optimized to be able to measure the template temperature. The connection mode and the installation position of the temperature sensor can be selected according to the requirement in practice.
When the mold production needs heating, the flow of applying the device is as follows:
1. the mold was first mounted on the injection molding machine and the platens were locked (see fig. 1).
2. And connecting the temperature control box with a connector of a control device on the mold.
3. And turning on the power supply of the temperature control box, and setting the required temperature.
4. And waiting for the temperature of the mold to rise.
5. And after the temperature of the mold is raised to reach the required temperature, performing injection molding and starting.
6. And (5) normal production by injection molding.
7. And finishing the working procedure.
The control device directly heats related die parts by utilizing the electric heating principle, identifies the temperature of related positions through the temperature sensor, and feeds the temperature to the temperature control box for temperature control.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (9)
1. A control device for ultrahigh mold temperature of an injection mold is provided with a first mold plate (1) and a second mold plate (2) which are arranged oppositely, and the inner side surfaces of the first mold plate (1) and the second mold plate (2) are respectively provided with a mold core (11) and a mold cavity (21), and is characterized by comprising electric heating wires (3) which are respectively arranged in the first mold plate (1) and the second mold plate (2), temperature sensors (4) which are respectively used for sensing the temperature of the first mold plate (1) and the temperature of the second mold plate (2), and connectors (5) which are respectively arranged on the end surfaces of the first mold plate (1) and the second mold plate (2); electric heating wire (3) in first template (1) surround mold core (11) and set up, and electric heating wire (3) in second template (2) surround die cavity (21) and set up, and electric heating wire (3) and temperature sensor (4) all with connector (5) electric connection.
2. The control device for the ultrahigh mold temperature of the injection mold according to claim 1, characterized in that at least one circle of groove (6) surrounding the mold core (11) is arranged on the inner side surface of the first mold plate (1), at least one circle of groove (6) surrounding the mold cavity (21) is arranged on the inner side surface of the second mold plate (2), and the electric heating wire (3) is arranged in the groove (6) and fixed by the heat-conducting glue (7) filled in the groove (6).
3. A control device for ultra high mold temperature of injection mold according to claim 2, characterized in that the inner side of the first mold plate (1) is provided with a plurality of circles of grooves (6) surrounding the mold core (11), and the inner side of the second mold plate (2) is provided with a plurality of circles of grooves (6) surrounding the mold cavity (21).
4. The control device for the ultrahigh mold temperature of the injection mold according to claim 2, wherein the width of the groove (6) is matched with the diameter of the electric heating wire (3), and the depth of the groove (6) is larger than the diameter of the electric heating wire (3).
5. The control device for ultrahigh mold temperature of injection mold according to claim 2, wherein the heat conductive glue (7) is curable heat conductive glue, including heat conductive pouring glue or curable heat conductive gel.
6. The control device for the ultrahigh mold temperature of the injection mold according to claim 5, wherein the heat conducting glue (7) is 1-2 mm higher than the surface of the mold after being cured.
7. The control device for ultrahigh mold temperature of injection mold according to claim 1, characterized in that the connector (5) is a plug-in connector.
8. The control device for the ultrahigh mold temperature of the injection mold according to claim 1, wherein the temperature sensor (4) is inserted into the first mold plate (1) and the second mold plate (2).
9. The control device for the ultrahigh mold temperature of the injection mold according to claim 1, wherein the inner side surfaces of the first mold plate (1) and the second mold plate (2) are provided with temperature sensing grooves, and the temperature sensor (4) is arranged in the temperature sensing grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187770.0A CN112848174A (en) | 2019-11-28 | 2019-11-28 | Control device for ultrahigh mold temperature of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187770.0A CN112848174A (en) | 2019-11-28 | 2019-11-28 | Control device for ultrahigh mold temperature of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112848174A true CN112848174A (en) | 2021-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911187770.0A Pending CN112848174A (en) | 2019-11-28 | 2019-11-28 | Control device for ultrahigh mold temperature of injection mold |
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| Country | Link |
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| CN (1) | CN112848174A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207240772U (en) * | 2017-09-29 | 2018-04-17 | 苏州嘉泰隆实业有限公司 | A kind of oiling cover board injection mold with temperature control system |
| CN207359565U (en) * | 2017-07-11 | 2018-05-15 | 福建省石狮市通达电器有限公司 | A kind of nanometer injection mold heating unit and its nanometer injection mold |
| CN211542261U (en) * | 2019-11-28 | 2020-09-22 | 上海庆良电子有限公司 | Control device for ultrahigh mold temperature of injection mold |
-
2019
- 2019-11-28 CN CN201911187770.0A patent/CN112848174A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207359565U (en) * | 2017-07-11 | 2018-05-15 | 福建省石狮市通达电器有限公司 | A kind of nanometer injection mold heating unit and its nanometer injection mold |
| CN207240772U (en) * | 2017-09-29 | 2018-04-17 | 苏州嘉泰隆实业有限公司 | A kind of oiling cover board injection mold with temperature control system |
| CN211542261U (en) * | 2019-11-28 | 2020-09-22 | 上海庆良电子有限公司 | Control device for ultrahigh mold temperature of injection mold |
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