Heating system of injection device
By setting an independent temperature sensor for each heating ring and controlling the heating ring spacing, the problems of temperature measurement deviation and heat loss in the heating system of traditional injection device are solved, and the heating effect is improved and the temperature is accurately controlled.
Patent Information
- Application Number
- CN202421095147.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The heating system of the traditional injection device has a temperature measurement deviation because the thermocouple measurement area is not wrapped by the heating ring. If the heating ring fails, the thermocouple can still detect the temperature and cannot be judged in time, which will affect the injection molding effect and the heat loss is large, which will affect the Heating effect.
Set an independent temperature sensor for each heating ring, and control the heating ring spacing. Use a thermocouple to perform temperature measurement, and install an insulating protective sleeve on the thermocouple to avoid contact. The heating ring spacing is controlled at ≤50 mm to reduce heat loss. .
It ensures timely detection of each heating ring, accuracy of temperature measurement, reduces heat loss, improves heating effect, and ensures that the squeeze temperature is within the ideal range.
Smart Images
Figure CN222245981U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an injection device in an injection molding machine, in particular to a heating system for the injection device in the injection molding machine. Background Art
[0002] like Figure 1 As shown, the heating system of the conventional injection device generally comprises: a screw 1 and a barrel 2, wherein a nozzle 21 is disposed at one end of the barrel 2, the screw 1 is disposed in the barrel 2 from the other end of the barrel 2, and the barrel 2 is provided with six heating coils along its length direction, namely, a first heating coil 31, a second heating coil 32, a third heating coil 33, a fourth heating coil 34, a fifth heating coil 35 and a sixth heating coil 36. A first thermocouple 71 is disposed between the first heating coil 32 and the second heating coil 32, a second thermocouple 72 is disposed between the third heating coil 33 and the fourth heating coil 34, and a third thermocouple 73 is disposed between the fifth heating coil 35 and the sixth heating coil 36. Thus, the first thermocouple 71 is equivalent to detecting the first heating coil 31 and the second heating coil 32 at the same time, the second thermocouple 72 is equivalent to detecting the third heating coil 33 and the fourth heating coil 34 at the same time, and the third thermocouple 73 is equivalent to detecting the fifth heating coil 35 and the sixth heating coil 36 at the same time. In actual use, since the area measured by the thermocouple is not covered by the heating coil, the measured temperature deviates from the actual heating area; moreover, if a heating coil in a heating zone fails and the other heating coil is effective, the thermocouple can still detect the temperature and the equipment is still running, and it is impossible to get a timely judgment, which affects the normal injection molding; in addition, since there is a large area on the barrel that is not covered by the heating coil, there is a large heat loss, which affects the heating effect. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a heating system for an injection device in which a temperature sensor is installed in each heating ring and the spacing between the heating rings is controlled.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a heating system for an injection device, comprising: a barrel and a screw, a nozzle is arranged at one end of the barrel, the screw is arranged in the barrel from the other end of the barrel, a plurality of heating coils are arranged on the barrel along its length direction, the spacing between adjacent heating coils is ≤50 mm, each heating coil is provided with a temperature sensor corresponding to the heating coil, and the temperature sensor is inserted into the barrel.
[0005] As a preferred solution, in the heating system of the injection device, the temperature sensor is a thermocouple.
[0006] As a preferred embodiment, in the heating system of the injection device, the specific installation method of the thermocouple is: a detection hole matching the thermocouple is provided in the heating coil, a detection placement cavity corresponding to the detection hole is provided on the barrel, and the thermocouple extends from the detection hole in the heating coil into the detection placement cavity on the barrel.
[0007] As a preferred solution, in the heating system of the injection device, an insulating protective sleeve is provided on the thermocouple to separate it from the corresponding heating coil.
[0008] As a preferred solution, in the heating system of the injection device, three heating coils are arranged on the barrel along its length direction; and the spacing between adjacent heating coils is ≤30 mm.
[0009] The beneficial effects of the utility model are:
[0010] 1. The utility model installs an independent temperature sensor in each heating coil, so that the detection of the heating coil will not be missed, and any problem with the heating coil can be detected in time, so the extrusion effect will not be affected by the failure of the heating coil to detect in time.
[0011] 2. The utility model installs the temperature sensor in the heating coil, and the measured temperature is the temperature of the actual heating area, so that the extrusion temperature can be controlled within a relatively ideal range.
[0012] 3. The utility model reduces the area of the barrel not covered by the heating rings by controlling the spacing between adjacent heating rings, greatly reduces the heat loss and improves the heating effect.
[0013] 4. The utility model provides an insulating protective sleeve on the thermocouple, which, on the one hand, insulates the thermocouple and, on the other hand, avoids contact between the thermocouple and the heating ring. In this way, the thermocouple detects the actual temperature of the material in the barrel, thereby ensuring the accuracy of the detected temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the heating system of the injection device described in the background technology.
[0015] Figure 1 The reference numerals in the figure are: 1, screw, 2, barrel, 21, nozzle, 31, first heating coil, 32, second heating coil, 33, third heating coil, 34, fourth heating coil, 35, fifth heating coil, 36, sixth heating coil, 71, first thermocouple, 72, second thermocouple, 73, third thermocouple.
[0016] Figure 2It is a structural schematic diagram of the heating system of the injection device of the utility model.
[0017] Figure 3 yes Figure 2 Schematic diagram of the structure in the AA section direction.
[0018] Figure 2 and Figure 3 The reference numerals in the figures are: 1, screw, 2, barrel, 201, detection placement cavity, 21, nozzle, 31, first heating coil, 311, detection through hole, 32, second heating coil, 33, third heating coil, 71, first thermocouple, 711, insulating protective cover, 72, second thermocouple, 73, third thermocouple. DETAILED DESCRIPTION
[0019] The following is combined with Figures 2 to 3 , a specific implementation scheme of a heating system for an injection device described in the utility model is described in detail.
[0020] like Figure 2 As shown, a heating system for an injection device described in the utility model comprises: a screw 1 and a barrel 2, a nozzle 21 is arranged at one end of the barrel 2, the screw 1 is arranged in the barrel 2 from the other end of the barrel 2, and three heating coils are arranged on the barrel 2 along its length direction, namely a first heating coil 31, a second heating coil 32 and a third heating coil 33 (corresponding to the three heating zones in the barrel 2), and the spacing between the first heating coil 31 and the second heating coil 32, and between the second heating coil 32 and the third heating coil 33 is ≤50 mm (preferably ≤30 mm); a first thermocouple 71 is arranged in the first heating coil 31, a second thermocouple 72 is arranged in the second heating coil 32, and a third thermocouple 73 is arranged in the third heating coil 33. The first thermocouple 71, the second thermocouple 72 and the third thermocouple 73 are installed in the same manner. Taking the first thermocouple 71 as an example, as shown in FIG. Figure 3 As shown, the specific installation method is: the first heating coil 31 is provided with a detection hole 311 matched with the first thermocouple 71, the barrel 2 is provided with a detection placement cavity 201 corresponding to the detection hole 311, and the first thermocouple 71 extends from the detection hole 311 in the first heating coil 31 into the detection placement cavity 201 on the barrel 2; the first thermocouple 71 is provided with an insulating protective sleeve 711 to separate it from the corresponding first heating coil 31.
[0021] In actual use, the temperature measured by the first thermocouple 71, the second thermocouple 72 and the third thermocouple 73 is the temperature of the actual heating area, so that the temperature of the extrusion can be controlled within a relatively ideal range. In addition, by controlling the spacing between adjacent heating coils, i.e., the first heating coil 31 and the second heating coil 32, and the second heating coil 32 and the third heating coil 33, the area on the barrel 2 that is not covered by the heating coil is reduced, which greatly reduces the heat loss and improves the heating effect.
[0022] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications made to the shapes, structures, features and spirits described in the claims of the present invention should be included in the claims of the present invention.
Claims
1. A heating system for an injection device, comprising: A barrel and a screw, wherein a nozzle is arranged at one end of the barrel, and the screw is arranged in the barrel from the other end of the barrel, characterized in that a plurality of heating coils are arranged on the barrel along its length direction, and the spacing between adjacent heating coils is ≤50 mm, and each heating coil is provided with a temperature sensor corresponding to the heating coil, and the temperature sensor is inserted into the barrel.
2. A heating system for an injection device according to claim 1, characterized in that: The temperature sensor is a thermocouple.
3. A heating system for an injection device according to claim 2, characterized in that: The specific installation method of the thermocouple is: a detection hole matching the thermocouple is provided in the heating coil, a detection placement cavity corresponding to the detection hole is opened on the barrel, and the thermocouple extends from the detection hole in the heating coil into the detection placement cavity on the barrel.
4. A heating system for an injection device according to claim 3, characterized in that: The thermocouple is covered with an insulating protective sleeve to separate it from the corresponding heating ring.
5. A heating system for an injection device according to any one of claims 1 to 4, characterized in that: The barrel is provided with three heating rings along its length direction; the spacing between adjacent heating rings is ≤30 mm.