CN211730051U - Hot flow channel system with accurate heating function - Google Patents
Hot flow channel system with accurate heating function Download PDFInfo
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- CN211730051U CN211730051U CN201922056584.5U CN201922056584U CN211730051U CN 211730051 U CN211730051 U CN 211730051U CN 201922056584 U CN201922056584 U CN 201922056584U CN 211730051 U CN211730051 U CN 211730051U
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- heating
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- flow channel
- hot runner
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Abstract
The utility model relates to a mould field, especially a heat flow channel system with accurate heating function. The heat flow channel system comprises: the heat flow channel plate comprises a heat flow channel plate body, wherein two opposite side surfaces of the heat flow channel plate body are respectively a feeding surface and a discharging surface; the hot runner plate body is provided with a plurality of porous runners, and is characterized in that the hot runner plate body is provided with a thick film heating body; the thick film heating body heats the hot runner plate body. The utility model provides a heat flow channel system with accurate heating function, it is on the basis of the heating structure of current heat flow channel system, has all improved heating element and heating element's structure that sets up, thereby makes heating structure in the heat flow channel system, the efficiency of generating heat is better, and response speed is faster, heats the more accurate convenience of accuse temperature operation, and life is longer.
Description
Technical Field
The utility model relates to a mould field, especially a heat flow channel system with accurate heating function.
Background
In the blank injection molding process, a plurality of identical plastic products are injected by one mold, so that a hot runner plate is used in the blank injection mold, and the hot runner plate is used for uniformly and uniformly distributing hot-melt colloidal plastic to the identical glue outlet holes at constant temperature and then delivering the glue to the injection nozzles through the glue outlet holes so as to manufacture a plurality of identical plastic products.
The main task of the hot runner plate is to send the melt from the main runner to each individual nozzle at constant temperature and inject the melt into the cavity, in order to ensure the quality and performance of the products and the consistency of the quality and performance of the products in the same batch, the nozzles should be controlled to eject the melt with equal pressure at the same time, the scheme adopted at present for achieving the purpose is to control the flow of the melt from the glue inlet to the corresponding nozzle of each glue outlet to be equal, and to make each area of the hot runner plate in a constant temperature state; in order to keep the hot runner plate in a constant temperature state, the hot runner plate needs to be continuously heated, and a current common mode is that a circle of heating strips or heating wires are arranged at the edge of the hot runner plate, but the hot runner plate with the structure has the defects that the whole plate is unevenly heated, the peripheral temperature of the hot runner plate close to the heating strips is high, and the middle temperature is lower than the peripheral temperature, so that the melting degree of a melt in each area is different; influence of the degree of melting of the melt; the melt roughness further affects the flow rate of the melt, so that the melt cannot be sprayed out from all nozzles simultaneously, and the melt pressure sprayed out from all nozzles is not equal due to the influence of the melt density, so that the quality and the performance of the product are difficult to ensure, and the quality and the performance of the products in the same batch are not consistent.
Heating elements in the existing hot runner system all adopt electric heating tubes or electric heating wires, and then the heating elements are wound or made into special shapes to be arranged in positions needing to be heated of the hot runner system, because the heating tubes and the heating wires have low heat conversion efficiency, energy is not saved, and the heating tubes and the heating wires are easy to damage after long-term heating and have short service life; moreover, the heating pipe and the heating wire need to be preheated, the heating is slow, and the processing efficiency is seriously influenced; the heating temperature adjustment process of the heating pipe and the heating wire is very slow, so that the accurate and quick temperature adjustment of the heat flow channel system is not convenient to realize, and the production quality of products can be influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks, an object of the present invention is to provide a heat flow channel system with precise heating.
To achieve the purpose, the utility model adopts the following technical proposal:
a thermal flow channel system with precision heating, comprising: the hot runner plate comprises a hot runner plate body, wherein two opposite side surfaces of the hot runner plate body are respectively a feeding surface and a discharging surface; the hot runner plate body is provided with a plurality of porous runners, and the hot runner body is provided with a thick film heating body; the thick film heating body heats the hot runner plate body.
Preferably, the porous flow channel penetrates from the feeding surface to the discharging surface; the thick film heating body is arranged on the discharging surface, is in a strip shape and is wound on the outer side of the porous flow channel.
Preferably, the feeding surface is also provided with the thick film heating body.
More preferably, be the banding thick film heating body, it includes two at least thick film heating strips that can independently control generate heat, and many the thick film heating strip is followed side by side the poroid runner outside to the outside border of hot runner passageway board body sets up.
Preferably, the thick film heating strips are located on the same plane, and arrangement gaps are arranged between the thick film heating strips, wherein the arrangement gap range is as follows: 5-20 mm.
Preferably, the widths of the plurality of thick film heating strips are gradually increased from the outer side of the porous flow channel to the outer side edge of the hot runner channel plate body.
Preferably, a coolant flow channel is further arranged in the hot runner plate body, the coolant flow channel main body part is wound on the inner side of the plurality of hole-shaped flow channels, and the liquid inlet and the liquid outlet extend from the periphery of the hot runner plate body to the outside of the hot runner plate body.
Preferably, the heat flow channel system further comprises: heating the nozzle; the heating nozzle includes: a nozzle heater and a nozzle body; the nozzle body is provided with a feeding end and a material injection end, and the feeding end is in butt joint with a porous flow passage arranged on the discharging surface; the nozzle heater includes: heater body and setting the outside nozzle thick film heating member of heater body, the nozzle thick film includes: the tubular heating thick film and the power connector for providing power for the tubular heating thick film.
Preferably, a protective sleeve is sleeved outside the nozzle thick film, the protective sleeve is tubular, and the upper end and the lower end of the protective sleeve are respectively fixed with the upper end and the lower end of the heater body through an upper flange and a lower flange; the nozzle thick film is pressed and fixed by the inner wall of the protective sleeve and the outer wall of the heater, and the power supply connector extends out of the protective sleeve from the through hole formed in the protective sleeve.
Preferably, the protective sleeve comprises a tubular ceramic shell and a heat insulation material layer arranged on the inner wall of the tubular ceramic shell.
The utility model provides a heat flow channel system with accurate heating function, it is on the basis of the heating structure of current heat flow channel system, has all improved heating element and heating element's structure that sets up, thereby makes heating structure in the heat flow channel system, the efficiency of generating heat is better, and response speed is faster, heats the more accurate convenience of accuse temperature operation, and life is longer.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention;
fig. 2 is a schematic structural view of an embodiment of the present invention;
fig. 3 is a schematic structural view of the heating nozzle according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of the nozzle heater according to an embodiment of the present invention.
Wherein: the heating device comprises a hot runner plate body 100, a porous runner 110, a thick film heating body 120, a thick film heating bar 121, a cooling liquid runner 130, a heating nozzle 200, a nozzle heater 210, a heater body 211, a nozzle thick film 212, a power supply connector 213, a protective sleeve 214, an upper flange 215 and a lower flange 216.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 4, a heat flow channel system with precise heating function includes: the hot runner plate comprises a hot runner plate body 100, wherein two opposite side surfaces of the hot runner plate body 100 are a feeding surface and a discharging surface respectively; the hot runner plate body is provided with a plurality of porous runners 110, and the hot runner body is provided with a thick film heating body 120; the thick film heating body 120 heats the hot runner plate body. The thick film heating body 120 is adopted in the hot flow channel system to replace the existing heating tube and heating wire, and the thick film heating body 120 is arranged according to the specific position of the hole flow channel on the hot flow channel plate, so that the hot flow channel plate is heated more uniformly and rapidly, and the temperature of the injection molding material flowing through the inside of each hole flow channel 110 is ensured to be more uniform; more preferably, thick film heating body 120 adopts the thick film heating material that has appeared among the prior art to make, and the temperature that generates heat of thick film heating material can both be known constantly through control circuit, also can set up the more accurate detection temperature of pad pasting formula thermodetector among the prior art in the position of heating film, moreover thick film heating material temperature regulation that generates heat is also very quick, and in addition, thick film heating material compact structure can reduce the volume and the weight of hot runner system, and thick film heating material is for current heating tube and heater, and the temperature regulation space that generates heat is bigger, difficult ageing damage, and life is longer.
The hole-shaped flow passage 110 penetrates from the feeding surface to the discharging surface; the thick film heating body 120 is arranged on the discharging surface, and the thick film heating body 120 is strip-shaped and wound on the outer side of the porous flow channel 110. In order to heat the whole body of the hot runner plate 100 more uniformly, a thick film heating material is used as a heating element, and a plurality of heating points can be arranged in small areas or point areas at each position of the hot runner plate, but in such an arrangement, the number of heating thick films is too large, and a large number of heating thick films need to be controlled and adjusted at the same time, which brings great difficulty to control operation and increases the setting cost; therefore, in order to solve the contradiction between the production cost and the control difficulty of the customer and the heating uniformity, in the embodiment, the thick film heating body 120 is arranged at the outer side of the porous flow channel 110, because the inner periphery of the heat flow channel plate is synchronously heated, the middle part of the heat flow channel plate is heated in multiple directions, the temperature rise is fast, the thick film heating body 120 is not required to be arranged in the middle area, the heating rates of the middle area and the peripheral area provided with the thick film heating body 120 are basically consistent, and the integral heating uniformity of the heat flow channel plate is improved; in addition, the heating element is wound on one side of each of the porous flow channels 110, so that heat can be absorbed by the injection molding material in the porous flow channels 110 more quickly, and the heating efficiency and the heat utilization rate can also be improved.
The feeding surface is also provided with the thick film heating body 120, and the thick film heating body 120 is strip-shaped and is wound on the outer sides of the plurality of hole-shaped runners 110. On the basis of the above embodiments, the same heating structure is also provided on the feeding surface of the heat flow channel plate in this embodiment, so that the heating uniformity and the heating efficiency can be further improved only by adding a small number of heating elements to the heat flow channel plate body 100.
The thick film heating body 120 is in a strip shape, and includes at least two thick film heating strips 121 capable of independently controlling heat, and the plurality of thick film heating strips 121 are arranged side by side from the outer side of the porous flow channel 110 to the outer side edge of the hot runner channel plate body. The thick film heating strips 121 are strip heating elements made of the existing thick film heating material, and each heating strip is attached and fixed in a strip-shaped groove formed in the discharging surface or the feeding surface of the hot runner plate body 100. Because the heat flow channel plate body 100 is made of a heat conducting material, the peripheral heat dissipation of the heat flow channel plate is obviously faster than the middle part, and therefore, the heating structure with better heating capacity needs to be arranged on the peripheral edge of the heat flow channel plate, so that the plurality of thick film heating strips 121 are arranged side by side, the heat emitted by the thick film heating strips 121 on the inner side and the heat emitted by the thick film heating strips 121 on the outer side are superposed in a certain area, the problem that the heat dissipation on the outer side is faster is solved, and the integral heating uniformity of the heat flow channel plate can be ensured to a greater extent.
Thick film heating bar 121 is located the coplanar, is equipped with between each other and arranges the clearance, it is to arrange the clearance scope: 5-20 mm. The widths of the thick film heating bars 121 are gradually increased from the outer side of the hole-shaped runner 110 to the outer side edge of the hot runner channel plate body. Although the thick film heating strips 121 arranged side by side generate heat and are overlapped with each other with a certain advantage, if the overlapping degree is too large, or two adjacent thick film heating strips 121 are in direct contact, the problem that the local heating of the hot runner plate body 100 is too fast and cannot be adjusted easily occurs; therefore, the gap between two adjacent thick film heating bars 121 and the width of each thick film heating bar 121 are limited within the above parameter range, which can overcome the above problems, and further improve the overall heating uniformity of the heat flow channel plate.
The hot runner plate body 100 is further provided with a cooling liquid runner 130, the main body of the cooling liquid runner is wound around the inner sides of the plurality of the porous runners 110, and a liquid inlet and a liquid outlet extend from the periphery of the hot runner plate body 100 to the outside of the hot runner plate body 100. Since the temperature of the hot runner plate body 100 needs to be kept constant in the hot runner system, a cooling structure and a cooling fluid channel 130 need to be provided in addition to a heating structure for the hot runner plate body 100; because the hot runner plate body 100 adopts a peripheral heating mode, the middle part of the hot runner plate body 100 is easy to heat up, so that the cooling structure of the cooling liquid runner plate is arranged in the middle part of the hot runner plate body 100, and the whole temperature of the hot runner plate body 100 can be quickly adjusted.
The heat flow channel system further comprises: the heating nozzle 200; the heating nozzle 200 includes: a nozzle heater 210 and a nozzle body; the nozzle body is provided with a feeding end and a material injecting end, and the feeding end is in butt joint with the porous flow channel 110 arranged on the discharging surface; the nozzle heater 210 includes: a heater body 211 and a nozzle thick film 212 provided outside the heater body to heat the body 120, the nozzle thick film 212 including: the tubular heating thick film and a power supply connector for providing power supply for the tubular heating thick film; specifically, the heater body 211 is a heat conductive material, and may be made of stainless steel. Besides a special heating structure arranged on the hot runner plate body 100, the hot runner system also comprises a heating structure arranged in the nozzle structure, and the two heating structures can be controlled independently from each other, but can be controlled in real time according to temperature parameters, so that the temperature of the injection molding material injected by the nozzle can be controlled more accurately and conveniently.
The nozzle thick film 212 is externally sleeved with a protective sleeve 214, the protective sleeve 214 is tubular, and the upper end and the lower end of the protective sleeve 214 are respectively fixed with the upper end and the lower end of the heater body through an upper flange 215 and a lower flange 216; the nozzle thick film 212 is pressed and fixed by the inner wall of the protective sleeve 214 and the outer wall of the heater, and the power supply connector 213 extends out of the protective sleeve 214 from the through hole of the protective sleeve 214; since the nozzle thick film 212 is made of thick film heating material, the thickness thereof is thin, and the nozzle thick film is easily damaged when being directly exposed to the outside, and the structure of the nozzle thick film 212 fixed to the nozzle body cannot be stable for a long time, the heating effect of the nozzle thick film 212 on the nozzle body is directly affected.
The protective sleeve 214 comprises a tubular ceramic shell and a heat insulation material layer arranged on the inner wall of the tubular ceramic shell; so that the protective sleeve 214 can protect the nozzle thick film 212, and can better transmit the heat generated by the nozzle thick film 212 to the inside of the nozzle body with higher efficiency, thereby reducing heat loss.
The utility model provides a heat flow channel system with accurate heating function, it is on the basis of the heating structure of current heat flow channel system, has all improved heating element and heating element's structure that sets up, thereby makes heating structure in the heat flow channel system, the efficiency of generating heat is better, and response speed is faster, heats the more accurate convenience of accuse temperature operation, and life is longer.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (9)
1. A thermal flow channel system with precision heating, comprising: the hot runner plate comprises a hot runner plate body, wherein two opposite side surfaces of the hot runner plate body are respectively a feeding surface and a discharging surface; the hot runner plate body is provided with a plurality of porous runners, and is characterized in that the hot runner plate body is provided with a thick film heating body; the thick film heating body heats the hot runner plate body;
further comprising: heating the nozzle; the heating nozzle includes: a nozzle heater and a nozzle body;
the nozzle body is provided with a feeding end and a material injection end, and the feeding end is in butt joint with a porous flow passage arranged on the discharging surface;
the nozzle heater includes: a heater body and a nozzle thick film heating body arranged outside the heater body,
the nozzle thick film includes: the tubular heating thick film and the power connector for providing power for the tubular heating thick film.
2. The system of claim 1, wherein the hole-shaped flow channel penetrates from the feeding surface to the discharging surface; the thick film heating body is arranged on the discharging surface, is in a strip shape and is wound on the outer side of the porous flow channel.
3. The heat flow channel system with precise heating function as claimed in claim 2, wherein the feeding surface is also provided with the thick film heating body.
4. The heat flow channel system with precise heating function as claimed in claim 2 or 3, wherein the strip-shaped thick film heating body includes at least two thick film heating strips capable of independently controlling heat generation, and a plurality of the thick film heating strips are arranged side by side from the outside of the hole-shaped flow channel to the outside edge of the hot runner channel plate body.
5. The heat flow channel system with precise heating function as claimed in claim 4, wherein the thick film heating strips are located on the same plane, and are arranged with an arrangement gap therebetween, and the arrangement gap ranges from: 5-20 mm.
6. The system as claimed in claim 4, wherein the widths of the thick film heating strips are gradually increased from the outside of the hole-shaped flow channel to the outside edge of the hot runner channel plate body.
7. The system of claim 1, wherein a coolant channel is further disposed in the hot runner plate body, a main portion of the coolant channel is disposed around an inner side of the plurality of hole-shaped channels, and the liquid inlet and the liquid outlet extend from a periphery of the hot runner plate body to an outer side of the hot runner plate body.
8. The heat flow channel system with the precise heating function as claimed in claim 1, wherein a protective sleeve is sleeved outside the nozzle thick film, the protective sleeve is tubular, and the upper end and the lower end of the protective sleeve are fixed with the upper end and the lower end of the heater body through an upper flange and a lower flange respectively; the nozzle thick film is pressed and fixed by the inner wall of the protective sleeve and the outer wall of the heater, and the power supply connector extends out of the protective sleeve from the through hole formed in the protective sleeve.
9. The system as claimed in claim 8, wherein the protective sheath comprises a tubular ceramic casing and a layer of heat insulating material disposed on an inner wall of the tubular ceramic casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056584.5U CN211730051U (en) | 2019-11-26 | 2019-11-26 | Hot flow channel system with accurate heating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056584.5U CN211730051U (en) | 2019-11-26 | 2019-11-26 | Hot flow channel system with accurate heating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211730051U true CN211730051U (en) | 2020-10-23 |
Family
ID=72873626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922056584.5U Active CN211730051U (en) | 2019-11-26 | 2019-11-26 | Hot flow channel system with accurate heating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211730051U (en) |
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2019
- 2019-11-26 CN CN201922056584.5U patent/CN211730051U/en active Active
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