CN115431480A - Device for measuring and improving temperature uniformity of injection molding melt and using method thereof - Google Patents
Device for measuring and improving temperature uniformity of injection molding melt and using method thereof Download PDFInfo
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- CN115431480A CN115431480A CN202211046221.3A CN202211046221A CN115431480A CN 115431480 A CN115431480 A CN 115431480A CN 202211046221 A CN202211046221 A CN 202211046221A CN 115431480 A CN115431480 A CN 115431480A
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 62
- 239000000155 melt Substances 0.000 claims abstract description 61
- 238000009826 distribution Methods 0.000 claims abstract description 41
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 230000006872 improvement Effects 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 230000009467 reduction Effects 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 239000002243 precursor Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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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
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
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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
- 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
- B29C2945/76003—Measured parameter
- B29C2945/7604—Temperature
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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
- 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
- B29C2945/76177—Location of measurement
- B29C2945/7618—Injection unit
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of injection molding machinery, and particularly relates to a device for measuring and improving temperature uniformity of an injection molding melt and a using method thereof, wherein the device comprises: an injection seat base; the machine barrel is arranged above the injection base, and a screw is arranged in the machine barrel; the temperature detection device is arranged at the front end of the machine barrel and is used for detecting the temperature of a plasticized material body of the screw in the material storage area through a temperature sensor; the melt stirrer is arranged in a flow channel at the front end of the machine barrel and is connected with a rotating shaft; the cycloidal speed reducing motor is arranged on the injection seat base and is used for driving the melt stirrer to rotate; the cycloid speed reducing motor is connected with the temperature sensor, receives a temperature signal measured by the temperature sensor, and is used for adjusting the rotating speed of the cycloid speed reducing motor and further adjusting the rotating speed of the melt stirrer. The method of use includes melt temperature uniformity measurement and improvement. The injection molding device not only can accurately measure the temperature distribution of the material body, but also can effectively improve the phenomenon of uneven temperature distribution of the material body.
Description
Technical Field
The invention belongs to the technical field of injection molding machinery, and particularly relates to a device for measuring and improving the temperature uniformity of an injection molding melt.
The invention also relates to a using method of the injection molding melt temperature uniformity measuring and improving device.
Background
An injection molding machine is also known as an injection molding machine or an injection machine. The main forming equipment for making various shapes of plastic products from thermoplastic plastics or thermosetting plastics by using plastic forming dies is divided into vertical, horizontal and full-electric types. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity.
In the plasticizing process of a screw of an injection molding machine, the temperature distribution of a melt stored in a storage area is not uniform due to the reasons that the effective length of the screw is shortened, the movement intermittence of the screw is caused, the temperature gradient of the material exists in a screw groove and the like caused by the retreating of the screw in the plasticizing process, and the quality of an injection molding product is directly influenced.
In order to ensure the quality and precision of injection molding products, the temperature of the melt needs to be monitored in real time and effective measures need to be taken to improve the phenomenon of uneven temperature distribution of the melt.
Regarding the monitoring of the melt temperature, a temperature sensor is usually installed on a nozzle of an injection molding machine, and the uniformity of the melt temperature in the stock area is represented according to the temperature fluctuation measured by the temperature sensor, but the temperature sensor arranged on the nozzle cannot accurately reflect the temperature distribution condition of the melt in the stock area, and certain errors exist.
About improving inhomogeneous measure of fuse-element temperature distribution, the utility model discloses a heat agitator is used to injection molding machine with notice number CN208375799U, including jar body and the apron that articulates in jar body upper end and set up the motor case in the apron upper end, the upper end inner wall of motor case is fixed and is equipped with agitator motor, agitator motor's output is rotated through first (mixing) shaft and is connected with first gear, the left and right sides of first gear all meshes the second gear, the second (mixing) shaft has all been fixed to cup jointed to the centre bore of two second gears, the fixed antifriction bearing that inlays and establish in motor case upper end that has cup jointed in the upper end of second (mixing) shaft, the lower extreme of first (mixing) shaft and second (mixing) shaft all runs through motor case and apron in proper order and extend the jar body, and the shaft wall both sides of first (mixing) shaft and second (mixing) shaft all fix and be equipped with the stirring frame. Above-mentioned utility model although can carry out intensive mixing through first (mixing) shaft and second (mixing) shaft positive and negative rotation to the internal solution of jar, its rotational speed that can not be according to the concrete temperature distribution condition of solution to first (mixing) shaft and second (mixing) shaft carries out the self-adaptation regulation, and its effect that improves solution temperature homogeneity is not good.
Therefore, there is a need for an injection molding machine that accurately monitors the temperature of the melt in the storage area and effectively improves the uniformity of the temperature distribution of the melt.
Disclosure of Invention
In order to accurately monitor and reflect the temperature distribution condition of the melt in the material storage area, effectively improve the melt with uneven temperature distribution and eliminate the influence of the temperature uniformity of the melt on the quality of injection-molded products, the invention provides a device for measuring and improving the temperature uniformity of the injection-molded melt, aiming at solving and optimizing the problems, which comprises the following steps:
an injection seat base;
the injection device comprises a barrel, a support frame, a heating device, a precursor and a nozzle, wherein the barrel is arranged above an injection seat base through the support frame, one end of the barrel is provided with a hopper, one end of the barrel, which is far away from the hopper, is outwards provided with the heating device, the precursor and the nozzle in sequence, a screw is arranged in the barrel, and the head of the screw is arranged at one end of the nozzle;
a temperature detection device provided at a front end of the barrel and located inside the heating device, the temperature detection device including: the temperature measuring device comprises a box body, a temperature measuring motor and a temperature sensor, wherein a driving gear and a driven gear are arranged in the box body, sliding grooves are formed in two sides of the interior of the box body, racks are connected to the sliding grooves, and the racks are meshed with the driven gear; the temperature measuring motor is used for driving the driving gear; the temperature sensor is arranged on the rack, can extend into the material body of the machine barrel flow channel and can move up and down along with the rack;
the melt stirrer is arranged in a front end runner of the machine barrel and is used for stirring plasticized material bodies, and the melt stirrer is connected with a rotating shaft;
the cycloidal speed reducing motor is arranged on the injection seat base and is used for driving the melt stirrer to rotate; the cycloid speed reduction motor is connected with the temperature sensor, receives a temperature signal measured by the temperature sensor, and is used for adjusting the rotating speed of the cycloid speed reduction motor and further adjusting the rotating speed of the melt stirrer.
Furthermore, the temperature sensor is connected with an inverter, the inverter is connected with a frequency converter and is connected with a control terminal of the frequency converter, and the frequency converter is connected with the cycloid speed reduction motor.
Furthermore, a driving gear and a driven gear in the box body are respectively connected in the box body through a driving gear shaft and a driven gear shaft, and the driving gear is meshed with the driven gear; the temperature measuring motor is connected to the outer surface of the box body through a bolt, and an output shaft of the temperature measuring motor is connected with the driving gear shaft through a second rigid coupler; and the temperature sensor is in threaded connection with the rack.
Further, the temperature sensors include at least two.
Furthermore, a driving shaft bearing and a driven shaft bearing are installed at two ends of the driving gear shaft and the driven gear shaft, and a driving shaft bearing end cover and a driven shaft bearing end cover are correspondingly arranged on the outer surface of the box body of the driving shaft bearing and the driven shaft bearing.
Furthermore, the melt stirrer comprises a plurality of arc-shaped rods which surround the same central shaft at intervals, and the outer contour surrounded by the arc-shaped rods is spherical.
Further, the melt stirrer is connected with the rotating shaft through a flat key, and sliding bearings are arranged at two ends of the melt stirrer.
Further, an output shaft of the cycloid speed reduction motor is connected with a rotating shaft of the melt stirrer through a first rigid coupling.
The invention also provides a use method of the injection molding melt temperature uniformity measuring and improving device, which specifically comprises the following steps:
measurement of melt temperature homogeneity: starting a temperature measuring motor, driving a driving gear to rotate by the temperature measuring motor, driving a driven gear to rotate by the driving gear, driving a rack to do vertical linear motion by the driven gear, enabling a temperature sensor to move up and down in a material body in a machine barrel storage area along with the rack, measuring radial temperature distribution of the material body, and completing axial temperature distribution test of the material body by a plurality of temperature sensors;
melt temperature uniformity improvement: and starting the cycloid speed reducing motor, driving the melt stirrer to rotate by the cycloid speed reducing motor, stirring the material with uneven temperature distribution, and adjusting the rotating speed by the cycloid speed reducing motor according to the temperature difference of the material measured by the temperature sensor so as to adjust the rotating speed of the melt stirrer.
The invention has the beneficial effects that:
the injection molding device provided by the invention not only can accurately measure the temperature distribution state of the material body in the material storage area, but also can effectively improve the phenomenon of uneven temperature distribution of the material body.
According to the temperature uniformity measuring device, the temperature uniformity of a material body is accurately measured through the temperature sensor, the temperature sensor is arranged on the rack, the driving gear is driven to rotate through the forward and reverse rotation of the temperature measuring motor, the driving gear drives the driven gear to rotate, the driven gear controls the rack to do vertical linear motion in the sliding groove, and then the probe of the temperature sensor extends into the material body of the machine barrel storage area and moves up and down along with the rack, so that the measuring position of the temperature sensor can be changed in the radial direction, and the measured temperature distribution of the material body is more accurate.
Aiming at improving the temperature uniformity of the material body, the melt stirrer is arranged in the front end runner of the machine barrel, the material body in the machine barrel is stirred, the temperature distribution of the material body is uniform, the rotating speed of the melt stirrer can be adjusted through the cycloid speed reducing motor, the cycloid speed reducing motor can adjust the rotating speed according to the temperature distribution condition measured by the temperature sensor, the more uniform the temperature distribution of the material body is, the faster the rotating speed of the cycloid speed reducing motor is, and the faster the rotating speed of the melt stirrer is.
The injection molding melt temperature measuring and improving device is applied to measuring and improving the temperature uniformity of the plasticized material body of the injection molding machine, can accurately measure the temperature distribution condition of the material body by using the device, and can effectively improve the phenomenon of uneven temperature distribution of the material body, thereby improving the quality of injection molded products and being beneficial to the rapid development of the plastic processing industry.
Drawings
FIG. 1 is a schematic view showing the overall structure of an apparatus for measuring and improving temperature uniformity of an injection-molded melt according to example 1;
FIG. 2 is a partial cross-sectional view of a front view of the injection melt temperature uniformity measuring and improving apparatus according to example 1;
FIG. 3 is a partial cross-section of a top view of the injection molding melt temperature uniformity measuring and improving apparatus described in example 1;
FIG. 4 is a schematic view of the structure of a temperature detecting apparatus of the apparatus for measuring and improving the temperature uniformity of an injection-molded melt according to example 1;
FIG. 5 is a schematic view of the structure of a melt stirrer of the apparatus for measuring and improving the temperature uniformity of an injection-molded melt described in example 1.
Reference numerals: 1. an injection seat base; 2. a support frame; 3. a motor base; 4. a cycloidal gear motor; 5. a first rigid coupling; 6. a rotating shaft; 7. a precursor; 8. a nozzle; 9. a melt stirrer; 10. a sliding bearing; 11. a flat bond; 12. a heating device; 13. a temperature detection device; 13-1, a temperature measuring motor; 13-2, driving shaft bearing end covers; 13-3, a driven shaft bearing end cover; 13-4, a box body; 13-5, a rack; 13-6, a temperature sensor; 13-7, driven shaft bearing; 13-8, driven gear shaft; 13-9, driving gear shaft; 13-10 parts of driving shaft bearing; 13-11, a chute; 13-12, a second rigid coupling; 14. a screw; 15. a barrel; 16. and (4) a hopper.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1 to 5, the present invention provides an apparatus for measuring and improving temperature uniformity of an injection molding melt, which can not only accurately measure axial and radial temperature distributions of a material body, but also effectively improve the phenomenon of non-uniformity of temperature distribution of the material body, thereby improving the quality of an injection molded article, comprising:
an injection seat base 1;
a machine barrel 15 which is arranged above the injection seat base 1 through a supporting frame 2, wherein one end of the machine barrel 15 is provided with a hopper 16 for feeding, one end of the machine barrel 15, which is far away from the hopper 16, is provided with a heating device 12, a precursor 7 and a nozzle 8 in sequence, a screw 14 is arranged in the machine barrel 15 and is used for plasticizing a material body, and the head of the screw 14 is arranged at one end of the nozzle 8;
a temperature sensing device 13 disposed at a forward end of the barrel 15 and inside the heating device 12 for sensing a temperature of a plasticized material body of the screw 14 in the magazine, the temperature sensing device 13 comprising: the temperature measuring device comprises a box body 13-4, a temperature measuring motor 13-1 and a temperature sensor 13-6, wherein a driving gear and a driven gear are arranged inside the box body 13-4 and are respectively connected into the box body 13-4 through a driving gear shaft 13-9 and a driven gear shaft 13-8, the driving gear and the driven gear are meshed with each other, sliding grooves 13-11 are formed in two sides inside the box body 13-4, racks 13-5 are connected onto the sliding grooves 13-11, and the racks 13-5 are meshed with the driven gear; an output shaft of the temperature measuring motor 13-1 is connected with a driving gear shaft 13-9 through a second rigid coupler 13-12 and is used for driving a driving gear; the temperature sensor 13-6 is arranged on the rack 13-5, can extend into a material body of a flow channel of the machine barrel 15 and can move up and down along with the rack 13-5, and is used for detecting the temperature of the material body;
a melt stirrer 9 provided in a flow path at a front end (a head end of the screw 14) of the cylinder 15 for stirring a plasticized material, the melt stirrer 9 being connected to the rotating shaft 6;
the cycloidal speed reduction motor 4 is arranged on the injection seat base 1 through the motor base 3, and an output shaft of the cycloidal speed reduction motor 4 is connected with a rotating shaft 6 of the melt stirrer 9 through a first rigid coupler 5 and is used for driving the melt stirrer 9 to rotate; the cycloid speed reduction motor 4 is connected with the temperature sensors 13-6, can receive temperature signals measured by the temperature sensors 13-6 and is used for adjusting the rotating speed of the cycloid speed reduction motor so as to adjust the rotating speed of the melt stirrer 9.
The method for measuring the uniformity of the temperature distribution of the material body comprises the following steps: the driving gear is connected with an output shaft of the temperature measuring motor 13-1 through a driving gear shaft 13-9, the temperature measuring motor 13-1 is started to drive the driving gear to rotate, the driving gear drives the driven gears on two sides to rotate, the rotation of the driven gears causes the rack 13-5 to move up and down, so that the temperature sensor 13-6 arranged on the rack 13-5 moves up and down along with the rack 13-5, the radial temperature detection of the material body in the material storage area is completed, and the temperature distribution state of the material body is detected more accurately.
The method for improving the uniformity of the temperature distribution of the material body comprises the following steps: the melt stirrer 9 can rotate under the drive of an output shaft of the cycloid speed reducing motor 4 to stir the material body plasticized in the machine barrel 15, so that the temperature distribution of the material body is uniform, the cycloid speed reducing motor 4 can control the rotating speed of the cycloid speed reducing motor according to the temperature difference measured by the temperature sensors 13-6, the rotating speed of the melt stirrer 9 is further adjusted, corresponding adjustment is carried out according to the temperature distribution condition of the material body in the machine barrel 15, and the temperature distribution of the material body is ensured to be uniform.
In addition, the driving mode of the linear motion of the temperature sensor 13-6 is not limited to the driving of the temperature measuring motor 13-1, and the temperature sensor 13-6 can be ensured to move up and down in the radial direction by driving through a cam mechanism.
In this embodiment, the temperature sensor 13-6 is connected with an inverter, the inverter is connected with a frequency converter and is connected with a control terminal of the frequency converter, and the frequency converter is connected with the cycloid speed reduction motor 4. The temperature signals detected by the temperature sensors 13-6 are converted into 4-20 milliampere electric signals by the phase inverter, then the electric signals are connected with the control terminal of the frequency converter, and the frequency converter is connected with the cycloid speed reduction motor 4, so that the rotating speed of the cycloid speed reduction motor 4 can be adjusted through the temperature difference measured by the temperature sensors 13-6, the rotating speed of the melt stirrer 9 is further adjusted, the uniform distribution of the temperature of the material body is realized, and the quality of the material body injection molding product is ensured.
In this embodiment, the temperature measuring motor 13-1 is connected to the outer surface of the box body 13-4 through a bolt, and the temperature sensor 13-6 is in threaded connection with the rack 13-5.
In this embodiment, the temperature sensors 13-6 include at least two temperature sensors 13-6, and the plurality of temperature sensors 13-6 can more accurately measure the axial temperature difference of the material body, and accordingly adjust the rotation speed of the melt stirrer 9 according to the measured temperature difference, so as to ensure that the temperature distribution of the material body is uniform.
In the embodiment, the driving shaft bearings 13-10 and the driven shaft bearings 13-7 are mounted at two ends of the driving gear shaft 13-9 and the driven gear shaft 13-8, so that the rotation precision of the driving gear shaft 13-9 and the driven gear shaft 13-8 is ensured, the friction coefficient in the motion process is reduced, and the driving shaft bearings 13-10 and the driven shaft bearings 13-7 are correspondingly provided with the driving shaft bearing end covers 13-2 and the driven shaft bearing end covers 13-3 on the outer surface of the box body 13-4.
In this embodiment, the melt stirrer 9 includes a plurality of arc-shaped rods surrounding along the same central axis at uniform intervals, and the outer contour surrounded by the arc-shaped rods is spherical. The structure ensures that the material body is uniformly stirred, so that the temperature distribution of the material body is uniform.
In this embodiment, the melt stirrer 9 and the rotating shaft 6 are connected through the flat key 11, and the connecting mode is simple, convenient to disassemble and assemble, good in centering performance, suitable for high-speed rotation and capable of bearing variable load and impact.
In this embodiment, the two ends of the melt stirrer 9 are provided with sliding bearings 10, so that the rotation precision of the melt stirrer 9 is ensured, and the friction coefficient of the melt stirrer in the movement process is reduced.
The device is applied to the measurement and improvement of the temperature uniformity of plasticized melt of an injection molding machine, the probe of the temperature sensor 13-6 can directly measure the temperature of the melt in the material storage area, the axial temperature distribution can be measured through the temperature difference of two or more temperature sensors 13-6, the radial temperature distribution of the melt can be measured through the linear motion of the single temperature sensor 13-6 in the machine barrel 15, and the measured temperature distribution of the melt is more accurate. The melt is uniformly stirred by the melt stirrer 9, the temperature uniformity of the melt is improved, and the rotating speed of the melt stirrer 9 can be adjusted according to the temperature distribution measured by the temperature sensor 13-6. The injection molding device improves the quality of injection molding products and promotes the development of the injection molding products.
Example 2
This example provides a method for using the apparatus for measuring and improving temperature uniformity of injection molding melt described in example 1, which specifically includes:
measurement of melt temperature uniformity: starting a temperature measuring motor 13-1, driving a driving gear to rotate by the temperature measuring motor 13-1, driving a driven gear to rotate by the driving gear, driving a rack 13-5 to do vertical linear motion by the driven gear, enabling a temperature sensor 13-6 to move up and down along with the rack 13-5 in a material body in a material storage area of a barrel 15, measuring radial temperature distribution of the material body, and simultaneously completing axial temperature distribution test of the material body by a plurality of temperature sensors 13-6;
melt temperature uniformity improvement: and starting the cycloid speed reduction motor 4, driving the melt stirrer 9 to rotate by the cycloid speed reduction motor 4 to stir the material with uneven temperature distribution, and adjusting the rotating speed of the cycloid speed reduction motor 4 according to the temperature difference of the material measured by the temperature sensors 13-6 so as to adjust the rotating speed of the melt stirrer 9.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.
Claims (9)
1. An injection molding melt temperature uniformity measuring and improving device, comprising:
an injection seat base;
the injection device comprises a barrel, a support frame, a heating device, a precursor and a nozzle, wherein the barrel is arranged above an injection seat base through the support frame, one end of the barrel is provided with a hopper, one end of the barrel, which is far away from the hopper, is outwards provided with the heating device, the precursor and the nozzle in sequence, a screw is arranged in the barrel, and the head of the screw is arranged at one end of the nozzle;
a temperature detection device provided at a front end of the barrel and located inside the heating device, the temperature detection device including: the temperature measuring device comprises a box body, a temperature measuring motor and a temperature sensor, wherein a driving gear and a driven gear are arranged in the box body, sliding grooves are formed in two sides of the interior of the box body, racks are connected to the sliding grooves, and the racks are meshed with the driven gear; the temperature measuring motor is used for driving the driving gear; the temperature sensor is arranged on the rack, can extend into the material body of the machine barrel flow channel and can move up and down along with the rack;
the melt stirrer is arranged in a front end runner of the machine barrel and is used for stirring a plasticized material body, and the melt stirrer is connected with a rotating shaft;
the cycloidal speed reduction motor is arranged on the injection seat base and is used for driving the melt stirrer to rotate; the cycloid speed reduction motor is connected with the temperature sensor, receives a temperature signal measured by the temperature sensor, and is used for adjusting the rotating speed of the cycloid speed reduction motor and further adjusting the rotating speed of the melt stirrer.
2. An injection molding melt temperature uniformity measuring and improving device according to claim 1, wherein said temperature sensor is connected with an inverter, said inverter is connected with a frequency converter and connected with a control terminal of the frequency converter, said frequency converter is connected with a cycloid speed reduction motor.
3. The injection molding melt temperature uniformity measuring and improving device according to claim 1, wherein a driving gear and a driven gear in the box body are respectively connected in the box body through a driving gear shaft and a driven gear shaft, and the driving gear and the driven gear are meshed with each other; the temperature measuring motor is connected to the outer surface of the box body through a bolt, and an output shaft of the temperature measuring motor is connected with the driving gear shaft through a second rigid coupling; and the temperature sensor is in threaded connection with the rack.
4. An injection molding melt temperature uniformity measuring and improving apparatus as described in claim 3, wherein said temperature sensors comprise at least two.
5. An injection molding melt temperature uniformity measuring and improving device as claimed in claim 3, wherein a driving shaft bearing and a driven shaft bearing are mounted at both ends of said driving gear shaft and said driven gear shaft, and a driving shaft bearing end cover and a driven shaft bearing end cover are correspondingly arranged on the outer surface of the box body of the driving shaft bearing and the driven shaft bearing.
6. An injection molding melt temperature uniformity measuring and improving device according to claim 1, wherein the melt stirrer comprises a plurality of arc rods surrounding along the same central axis at regular intervals, and the outer contour of the arc rods is spherical.
7. An injection molding melt temperature uniformity measuring and improving apparatus according to claim 1, wherein said melt stirrer and said rotating shaft are connected by a flat key, and both ends of the melt stirrer are provided with sliding bearings.
8. An injection molding melt temperature uniformity measuring and improving device according to claim 1, wherein an output shaft of said cycloidal gear motor is connected with a rotating shaft of the melt stirrer through a first rigid coupling.
9. A method of using an apparatus for measuring and improving temperature uniformity of an injection molding melt according to any of claims 1 to 8, comprising:
measurement of melt temperature uniformity: starting a temperature measuring motor, driving a driving gear to rotate by the temperature measuring motor, driving a driven gear to rotate by the driving gear, driving a rack to do vertical linear motion by the driven gear, enabling a temperature sensor to move up and down in a material body in a machine barrel storage area along with the rack, measuring radial temperature distribution of the material body, and completing axial temperature distribution test of the material body by a plurality of temperature sensors;
melt temperature uniformity improvement: starting the cycloid speed reduction motor, the cycloid speed reduction motor drives the melt stirrer to rotate, stirring the material body with uneven temperature distribution, and adjusting the rotating speed of the cycloid speed reduction motor according to the temperature difference of the material body measured by the temperature sensor, so as to adjust the rotating speed of the melt stirrer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211046221.3A CN115431480A (en) | 2022-08-30 | 2022-08-30 | Device for measuring and improving temperature uniformity of injection molding melt and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211046221.3A CN115431480A (en) | 2022-08-30 | 2022-08-30 | Device for measuring and improving temperature uniformity of injection molding melt and using method thereof |
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| CN115431480A true CN115431480A (en) | 2022-12-06 |
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| CN202211046221.3A Pending CN115431480A (en) | 2022-08-30 | 2022-08-30 | Device for measuring and improving temperature uniformity of injection molding melt and using method thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005144859A (en) * | 2003-11-14 | 2005-06-09 | Toyota Motor Corp | Injection molding apparatus and method for controlling resin temperature in injection molding apparatus |
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