CN211542261U - 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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- CN211542261U CN211542261U CN201922088860.6U CN201922088860U CN211542261U CN 211542261 U CN211542261 U CN 211542261U CN 201922088860 U CN201922088860 U CN 201922088860U CN 211542261 U CN211542261 U CN 211542261U
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Abstract
The utility model relates to a control device for injection mold ultrahigh mold temperature, the injection mold has a first template and a second template which are arranged oppositely, the inner side surfaces of the first template and the second template 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 template and the second template, temperature sensors which are respectively used for sensing the temperature of the first template and the second template and connectors which are respectively arranged on the end surfaces of the first template and the second template; 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 utility model provides a potential safety hazard to promote mould temperature control's the degree of accuracy, reduced the deviation.
Description
Technical Field
The utility model belongs to the technical field of the injection mold technique and specifically relates to a controlling means for injection mold superelevation mould temperature is related to.
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.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a control device for injection mold superelevation mould temperature in order to overcome the defect that above-mentioned prior art exists. 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 utility model can be realized through 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 utility model discloses following beneficial effect has:
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 view of the present invention during mold assembly;
fig. 2 is a schematic view of a first template of the present invention;
fig. 3 is a schematic cross-sectional view of the electric heating wire in the first template of the present invention;
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 present invention will be described in detail below with reference to the accompanying drawings 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 according to 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, wherein at least one circle of groove (6) surrounding the mold core (11) is formed on the inner side surface of the first mold plate (1), at least one circle of groove (6) surrounding the mold cavity (21) is formed 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. The control device for ultrahigh mold temperature of injection molds 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 ultrahigh mold temperature of injection mold according to claim 2, characterized in that the width of the groove (6) matches 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 ultrahigh mold temperature of injection mold according to claim 1, characterized in that the temperature sensor (4) is inserted in 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922088860.6U CN211542261U (en) | 2019-11-28 | 2019-11-28 | Control device for ultrahigh mold temperature of injection mold |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922088860.6U CN211542261U (en) | 2019-11-28 | 2019-11-28 | Control device for ultrahigh mold temperature of injection mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848174A (en) * | 2019-11-28 | 2021-05-28 | 上海庆良电子有限公司 | Control device for ultrahigh mold temperature of injection mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848174A (en) * | 2019-11-28 | 2021-05-28 | 上海庆良电子有限公司 | Control device for ultrahigh mold temperature of injection mold |
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