Soaking hot runner structure
By combining electromagnetic heating and cooling pipe circuits, the problem of uneven heating in the hot runner is solved, achieving uniform heating and precise temperature control of the medium within the hot runner, thus improving the stability and quality of injection molded products.
Patent Information
- Application Number
- CN202422776213.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-11-14
AI Technical Summary
Existing hot runner systems suffer from uneven heating, leading to unstable quality of injection molded products and problems such as weld lines and deformation.
It employs a wound coil and temperature controller to uniformly heat the hot runner through electromagnetic heating, and combines this with a cooling pipe circuit to precisely control the temperature. The hot runner is then encased in a shell with excellent thermal insulation properties.
It achieves efficient and uniform heating of the medium in the hot runner, prevents excessively high or low temperatures from affecting the quality of the medium, and improves the stability and quality of injection molded products.
Smart Images
Figure CN223735355U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hot runner field especially relates to a structure of even heating hot runner. BACKGROUND
[0002] Hot runner is through the method of heating to guarantee runner and sprue's plastic to keep melting state, and hot runner system generally comprises hot nozzle, shunt board, temperature control box and accessory etc.
[0003] The existing hot runner when injection molding work, hot nozzle form decides hot runner system selection and the manufacture of mould directly.
[0004] But, because of the uneven heating of hot runner system, it is easy to cause the quality of injection molding product to be unstable, and the problems such as weld line, deformation appear. INVENTION CONTENTS
[0005] In view of above problem, the utility model discloses a structure of even heating hot runner to provide a kind of to overcome above problem or at least partially solve above problem.
[0006] In order to solve the above problems, the utility model discloses a structure of even heating hot runner, comprising: winding coil, hot runner, nozzle and temperature controller;The winding coil ring is arranged on the outer wall of the hot runner;The bottom of the hot runner is provided with nozzle;The winding coil is electrically connected to the temperature controller;The temperature controller is arranged at one end of the hot runner.
[0007] Further, the temperature controller further includes temperature sensor;The temperature sensor is arranged at one end of the hot runner which is not provided with nozzle;The temperature sensor is electrically connected to the temperature controller.
[0008] Further, the structure of even heating hot runner further includes cooling pipeline loop;The cooling pipeline loop is spaced apart from the winding coil and is arranged on the outer wall of the hot runner;The cooling pipeline loop is electrically connected to the temperature controller.
[0009] Further, the structure of even heating hot runner further includes first shell;The first shell is wrapped and arranged in the hot runner.
[0010] Further, the structure of even heating hot runner further includes second shell;The second shell is wrapped and arranged in the hot runner;The first shell and the second shell are detachably connected.
[0011] Further, the first shell and the second shell are all selected from materials with excellent heat insulation performance.
[0012] The utility model includes the following advantages:
[0013] The hot runner is heated through electromagnetic principle by the winding coil and the temperature controller, so that the medium in the hot runner can be directly heated through the hot runner, the heating efficiency is higher and more uniform, and a cooling loop is further arranged, temperature can be accurately controlled, and excessively high or low temperature can be prevented from affecting medium quality. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is a structural schematic diagram of an embodiment of a uniform heating hot runner structure of the utility model;
[0015] Figure 2 is a structural schematic diagram of an embodiment of a uniform heating hot runner structure of the utility model.
[0016] In the drawing: 1, winding coil; 2, hot runner; 3, nozzle; 4, temperature controller. DETAILED DESCRIPTION
[0017] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, obvious and easy to understand, the utility model is further described in detail below by combining with the drawings and specific embodiments.
[0018] Referring to Figure 1 , a structural schematic diagram of an embodiment of a uniform heating hot runner structure of the utility model is shown, and specifically can include: winding coil 1, hot runner 2, nozzle 3 and temperature controller 4; the winding coil 1 is annularly arranged on the outer wall of the hot runner 2; the bottom of the hot runner 2 is provided with the nozzle 3; the winding coil 1 is electrically connected to the temperature controller 4; and the temperature controller 4 is arranged at one end of the hot runner 2.
[0019] It should be noted that the temperature controller 4 causes the magnetic field to change by controlling the current change of the winding coil 1, and then makes the hot runner 2 heat, and the principle is electromagnetic heating; the material of the hot runner 2 must be a conductive material (usually a ferromagnetic material), when the alternating current passes through the winding coil 1 wound on the conductive material, the alternating magnetic field is generated around the winding coil 1. And since the current is alternating, the magnetic field is also alternating, resulting in the continuous change of the magnetic flux passing through the inside of the coil. According to Faraday's law of electromagnetic induction, the change of the magnetic flux will generate an induced electromotive force (voltage) in the conductive material (such as a metal workpiece), and then generate a closed induced current in the material. These currents are usually referred to as eddy currents. When the eddy current flows in the conductive material, the eddy current encounters the action of the resistance in the flow process, thereby generating heat. And this phenomenon is called Joule heating effect, that is, the heat energy generated when the current passes through the resistance.
[0020] And electromagnetic heating is due to eddy current mainly in the surface layer of conductive material (according to the skin effect, eddy current is mainly concentrated in the surface of the material), so electromagnetic heating is mainly to heat the surface of the material, that is, to heat the hot runner 2, and the hot runner 2 heats the medium in its channel, eliminating a heat exchange process, making the heating process more efficient. By controlling the frequency, amplitude and coil layout of the alternating current, the depth and temperature of the heating can be accurately controlled.
[0021] Further, the temperature controller 4 further comprises a temperature sensor; the temperature sensor is arranged at one end of the hot runner 2 which is not provided with the nozzle 3; the temperature sensor is electrically connected to the temperature controller 4. It should be noted that the temperature sensor monitors the temperature of the hot runner 2 in real time, and then the temperature controller 4 changes the current of the winding coil 1 to control the magnetic field, thereby changing the heat generation.
[0022] Further, the uniform heating hot runner structure further comprises a cooling pipeline loop; the cooling pipeline loop is arranged in the outer wall of the hot runner 2 in a spaced ring manner with the winding coil 1; the cooling pipeline loop is electrically connected to the temperature controller 4. It should be noted that the cooling pipeline loop further realizes temperature control of the hot runner 2, and when the temperature is too high, the cooling pipeline loop can be used to cool down.
[0023] Further, referring to Figure 2 , a structure schematic view of an embodiment of a uniform heating hot runner structure is shown, wherein the uniform heating hot runner structure further comprises a first shell; the first shell is wrapped around the hot runner 2; the uniform heating hot runner structure further comprises a second shell; the second shell is wrapped around the hot runner 2; the first shell and the second shell are detachably connected. It should be noted that one side of the hot runner 2 is provided with the first shell, and the other side is provided with the second shell, and the opposite sides of the first shell and the second shell are attached, and the middle parts of the opposite sides of the first shell and the second shell are symmetrically provided with pull blocks, and the outer sides of the hot runner 2 and the upper end outer sides of the nozzles 3 are fixedly connected with fixing rings, and the sides close to each other of the two fixing rings are provided with movable rings, and the two movable rings are respectively located at the outer sides of the two ends of the first shell and the second shell, and the inner walls of the movable rings are attached to the outer sides of the first shell and the second shell, and the sides of the movable rings facing the fixing rings are uniformly provided with inner rods, and the sides of the fixing rings facing the movable rings are also uniformly provided with barrels, and the inner rods and the barrels are one-to-one corresponding, and the ends of the inner rods away from the movable rings are movably connected to the inner sides of the barrels.
[0024] Further, the inner side of the barrel is provided with a spring, and the mutual cooperation of the limiting ring, the first semicircular shell, the second semicircular shell, the pull block, the fixing ring, the movable ring, the inner rod, the barrel and the spring can facilitate maintenance and inspection, and the first shell and the second shell are easy to disassemble and assemble, thereby improving the efficiency.
[0025] Finally, it is also necessary to point out that, in this text, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the existence of other identical elements in the process, method, article or terminal device including the element.
[0026] The above provides a kind of heat soaking hot runner structure provided by the utility model, has carried out detailed introduction, the principle and implementation mode of the utility model are described in this paper by applying specific example, the above embodiment is only for helping to understand the method of the utility model and its core idea;Meanwhile, for the general technical personnel of the field, according to the idea of the utility model, there will be changes in specific implementation mode and application range, as described above, the content of the specification should not be understood as the limitation of the utility model.
Claims
1. An equalizing hot runner structure, characterized by, Comprising: a winding coil, a hot channel, a nozzle and a temperature controller; the winding coil is annularly arranged outside the outer wall of the hot channel; the bottom of the hot channel is provided with a nozzle; the winding coil is electrically connected to the temperature controller; the temperature controller is arranged at one end of the hot channel; the temperature controller further comprises a temperature sensor; the temperature sensor is arranged at the end of the hot channel which is not provided with a nozzle; the temperature sensor is electrically connected to the temperature controller; the soaking hot channel structure further comprises a cooling pipe loop; the cooling pipe loop is annularly arranged outside the outer wall of the hot channel and is spaced from the winding coil; the cooling pipe loop is electrically connected to the temperature controller; the soaking hot channel structure further comprises a first shell and a second shell; the first shell and the second shell wrap the hot channel; the first shell and the second shell are detachably connected.
2. The uniform heat hot runner structure of claim 1, wherein The first shell and the second shell are both made of materials with excellent heat insulation performance.