Multi-pronged point style bite block

Abstract

The utility model discloses multi -head needle point formula core, relates to multi -head needle point formula core technical field, including integral device main part, the integral device main part includes core mechanism, the outer ring surface top embedded mode of core mechanism is provided with pressure sensor, the outer ring surface top embedded mode of core mechanism is provided with temperature sensor, the outer ring surface one side of core mechanism is provided with first piezoelectric ceramic sheet, the outer ring surface one side of core mechanism is provided with second piezoelectric ceramic sheet, the outer periphery front end of core mechanism is provided with multiple needle point cone, the outer ring surface one side of needle point cone is provided with glue hole, the utility model discloses, through setting core mechanism, pressure sensor, temperature sensor, first piezoelectric ceramic sheet, second piezoelectric ceramic sheet, needle point cone and glue hole, effectively solved the high accuracy sensing synergy effect of ordinary multi -head needle point formula core is poor and the problem of self -cleaning, energy recovery function is not good.

Description

Technical Field

[0001] This utility model relates to the field of multi-needle dot nozzle technology, specifically multi-needle dot nozzles. Background Technology

[0002] Multi-point nozzles are key components of hot runner systems in the field of injection molding technology. They are mainly used to enable simultaneous injection of plastic through multiple gates, ensuring balanced pouring and uniform temperature at the nozzle tip, thereby improving the quality of plastic products.

[0003] In existing technologies, ordinary multi-needle point nozzles suffer from poor high-precision sensing and coordination effects, as well as inadequate self-cleaning and energy recovery functions. Utility Model Content

[0004] This invention provides a multi-point needle tip to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-point needle nozzle, comprising an integral device body, the integral device body including a nozzle mechanism, a pressure sensor embedded in the top of the outer ring surface of the nozzle mechanism, a temperature sensor embedded in the top of the outer ring surface of the nozzle mechanism, a first piezoelectric ceramic sheet on one side of the outer ring surface of the nozzle mechanism, a second piezoelectric ceramic sheet on one side of the outer ring surface of the nozzle mechanism, and multiple sets of needle point cones at the outer periphery of the nozzle mechanism, with a glue outlet hole on one side of the outer ring surface of each needle point cone.

[0006] Furthermore, the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet are connected to a pulse power supply with a pulse frequency of 10-50kHz. The pulse voltage is automatically output every few injections to make the needle point cone vibrate at high frequency and shake off the residual glue at the needle point cone and the glue outlet.

[0007] Furthermore, the first and second piezoelectric ceramic sheets recover vibration energy through the positive piezoelectric effect, with a high energy conversion efficiency. The generated electrical energy is stored in a thin-film supercapacitor to power the pressure sensor and temperature sensor.

[0008] Furthermore, the pressure sensor is a MEMS piezoresistive sensor with a measurement range of 0-10MPa and extremely high accuracy, and the temperature sensor is a PT100 platinum resistance thermometer with a measurement range of 20-300℃ and extremely high accuracy, powered by a thin-film supercapacitor.

[0009] Furthermore, the needle cone is made of hard alloy material with extremely low surface roughness, and combined with the high-frequency vibration of the piezoelectric ceramic sheet, the residual adhesive clogging rate is extremely low.

[0010] Furthermore, the diameter of the dispensing hole is 0.1-0.5mm, and the roughness of the hole wall is extremely low. In conjunction with the high-frequency vibration of the needle point cone, it ensures smooth dispensing and easy removal of residual glue.

[0011] Compared with the prior art, this utility model provides a multi-point needle tip, which has the following beneficial effects: 1. This multi-needle nozzle core, through the setting of a nozzle core mechanism, pressure sensor, temperature sensor, first piezoelectric ceramic sheet, second piezoelectric ceramic sheet, needle cone, and dispensing hole, connects the first and second piezoelectric ceramic sheets to a pulse power supply with a pulse frequency of 10-50kHz. Every few injections, it automatically outputs pulse voltage, causing the needle cone to vibrate at high frequency, shaking off residual glue at the needle cone and dispensing hole. The first and second piezoelectric ceramic sheets recover vibration energy through the positive piezoelectric effect, resulting in high energy conversion efficiency. The generated electrical energy is stored in a thin-film supercapacitor, powering the pressure and temperature sensors. The pressure sensor is a MEMS piezoresistive sensor with a measurement range of 0-10MPa and extremely high accuracy, and the temperature sensor is a PT100 platinum resistance thermometer with a measurement range of 20-300℃ and extremely high accuracy. Powered by the thin-film supercapacitor, the residual glue clogging rate can be reduced to an extremely low level, effectively avoiding problems such as poor dispensing or even clogging caused by residual glue accumulation, fundamentally ensuring the continuity and stability of dispensing. Meanwhile, when the needle cone generates high-frequency vibration, the first and second piezoelectric ceramic sheets utilize the positive piezoelectric effect to recover and convert the vibration energy. This energy conversion efficiency is very high, efficiently converting the mechanical energy generated during vibration into electrical energy. This converted electrical energy is stored in a thin-film supercapacitor, which provides a continuous power supply to the pressure and temperature sensors. This self-cleaning function not only ensures smooth dispensing and reduces the workload and frequency of manual cleaning, but also significantly reduces dependence on external power sources through the energy recovery mechanism, achieving significant energy savings and improving the economic and environmental performance of the device. This meets the demands of modern industrial production for green and efficient equipment. Furthermore, the pressure sensor can accurately capture subtle changes in pressure within the nozzle mechanism. The temperature sensor also possesses extremely high measurement accuracy, capable of real-time and accurate monitoring of temperature fluctuations within the nozzle mechanism. Both sensors are powered by thin-film supercapacitors, eliminating the need for external power supplies, simplifying the device's wiring and power supply design, and ensuring the independence and stability of the sensing system. During injection molding, pressure sensors monitor changes in injection pressure in real time, providing timely feedback on pressure stability and any abnormal fluctuations. Temperature sensors continuously monitor injection temperature, ensuring it remains within the required process range. This high-precision pressure and temperature data is transmitted in real time to the injection molding equipment's control system or relevant data processing unit. By analyzing this data, operators can precisely adjust injection molding process parameters, such as injection pressure, holding time, and injection temperature.When the pressure sensor detects an abnormal increase in pressure, the injection pressure can be appropriately reduced to avoid defects such as flash and deformation caused by excessive pressure. When the temperature sensor shows that the temperature deviates from the set value, the heating or cooling system can be adjusted in time to ensure the stability of the injection temperature, thereby significantly improving the quality of injection molded products. This ensures that the products strictly meet the design requirements in terms of dimensional accuracy, mechanical properties, and surface quality, providing solid data support for the continuous optimization of the injection molding process. It effectively solves the problems of poor high-precision sensing coordination and inadequate self-cleaning and energy recovery functions of ordinary multi-needle dot nozzles. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an enlarged structural schematic diagram of the piezoelectric ceramic sheet of this utility model; Figure 3 This is a magnified schematic diagram of the dispensing hole structure of this utility model.

[0013] In the figure: 1. Main body of the device; 2. Nozzle mechanism; 3. Pressure sensor; 4. Temperature sensor; 5. First piezoelectric ceramic sheet; 6. Second piezoelectric ceramic sheet; 7. Needle cone; 8. Dispensing hole. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 This utility model discloses a multi-needle dot nozzle core. Specifically, the multi-needle nozzle includes an overall device body 1, which includes a nozzle mechanism 2. A pressure sensor 3 is embedded in the top of the outer ring surface of the nozzle mechanism 2, and a temperature sensor 4 is embedded in the top of the outer ring surface of the nozzle mechanism 2. A first piezoelectric ceramic sheet 5 is provided on one side of the outer ring surface of the nozzle mechanism 2, and a second piezoelectric ceramic sheet 6 is provided on one side of the outer ring surface of the nozzle mechanism 2. Multiple sets of needle point cones 7 are provided at the outer front end of the nozzle mechanism 2, and a glue outlet hole 8 is provided on one side of the outer ring surface of the needle point cone 7.

[0016] In this embodiment, the first piezoelectric ceramic sheet 5 and the second piezoelectric ceramic sheet 6 are connected to a pulse power supply with a pulse frequency of 10-50kHz. The pulse voltage is automatically output every few injections to cause the needle cone 7 to vibrate at high frequency, shaking off the residual glue at the needle cone 7 and the glue outlet 8. The first piezoelectric ceramic sheet 5 and the second piezoelectric ceramic sheet 6 recover vibration energy through the positive piezoelectric effect, with a very high energy conversion efficiency. The generated electrical energy is stored in a thin-film supercapacitor to power the pressure sensor 3 and the temperature sensor 4. The pressure sensor 3 is a MEMS piezoresistive sensor with a measurement range of 0-10MPa and extremely high accuracy. The temperature sensor 4 is a PT100 platinum resistance thermometer with a measurement range of 20-300℃ and extremely high accuracy, and is powered by a thin-film supercapacitor.

[0017] Specifically, this reduces the residual adhesive clogging rate to an extremely low level, effectively avoiding problems such as poor dispensing or even blockage caused by residual adhesive accumulation, fundamentally ensuring the continuity and stability of dispensing. Simultaneously, when the needle cone generates high-frequency vibration, the first piezoelectric ceramic sheet 5 and the second piezoelectric ceramic sheet 6 utilize the positive piezoelectric effect to recover and convert vibration energy. Its energy conversion efficiency is very high, efficiently converting the mechanical energy generated during vibration into electrical energy. This converted electrical energy is stored in a thin-film supercapacitor, which provides a continuous power supply to the pressure sensor 3 and temperature sensor 4. This self-cleaning function not only ensures smooth dispensing and reduces the workload and frequency of manual cleaning, but also greatly reduces dependence on external power sources through the energy recovery mechanism, achieving significant energy savings and improving the economic and environmental performance of the device. This meets the demands of modern industrial production for green and efficient equipment, and the pressure sensor 3 can accurately capture subtle changes in the internal pressure of the nozzle mechanism 2. The temperature sensor 4 also possesses extremely high measurement accuracy, capable of real-time and accurate monitoring of temperature fluctuations within the nozzle mechanism 2. Furthermore, both sensors are powered by thin-film supercapacitors, eliminating the need for an external power supply. This simplifies the wiring and power supply design while ensuring the independence and stability of the sensing system. During injection molding, pressure sensor 3 monitors changes in injection pressure in real time, providing timely feedback on pressure stability and any abnormal pressure fluctuations. Temperature sensor 4 continuously monitors the injection temperature, ensuring it remains within the required range. This high-precision pressure and temperature data is transmitted in real time to the injection molding equipment's control system or relevant data processing unit. By analyzing this data, operators can precisely adjust injection molding process parameters, such as injection pressure, holding time, and injection temperature. When pressure sensor 3 detects an abnormally high pressure, the injection pressure can be appropriately reduced to prevent defects such as flash or deformation caused by excessive pressure. When temperature sensor 4 shows a temperature deviation from the set value, the heating or cooling system can be adjusted promptly to ensure temperature stability, significantly improving the quality of the injection-molded products. This ensures that the products strictly meet design requirements in terms of dimensional accuracy, mechanical properties, and surface quality, providing solid data support for continuous optimization of the injection molding process.

[0018] In this embodiment, the needle cone 7 is made of hard alloy material with extremely low surface roughness. Combined with the high-frequency vibration of the piezoelectric ceramic sheet, the residual glue blockage rate is extremely low. The glue outlet 8 has a diameter of 0.1-0.5mm and extremely low hole wall roughness. Together with the high-frequency vibration of the needle cone 7, it ensures smooth glue dispensing and easy removal of residual glue.

[0019] Specifically, this design ensures that the needle point cone 7 maintains its shape and dimensional accuracy during long-term high-frequency vibration and contact with the injection molding material. This effectively prevents problems such as needle point position shift and unstable glue output caused by wear, significantly extending the service life of the needle point cone 7 and reducing downtime and maintenance costs associated with component replacement. Simultaneously, the needle point cone 7's surface is finely machined with extremely low roughness, further reducing the probability of residual glue adhering to its surface. Combined with high-frequency vibration, this facilitates the removal of residual glue. Furthermore, the wall of the glue outlet 8 is precision-machined with extremely low roughness, and this smooth surface greatly reduces the adhesion and accumulation of residual glue on the hole wall. Under the synergistic effect of the high-frequency vibration of the needle point cone 7, residual glue can be easily shaken off from the glue outlet 8, ensuring smooth glue dispensing and preventing injection interruptions caused by glue outlet blockage. The overall structure of the device has been carefully optimized, with each component working together in coordination to comprehensively improve the device's durability and practicality. This enables it to maintain stable and reliable performance during long-term, continuous injection molding operations, reducing maintenance frequency and costs, and improving production efficiency.

[0020] In summary, this multi-point needle-type nozzle requires a comprehensive and meticulous inspection of the entire device before initiating injection molding operations. First, inspect the appearance of the main body 1 for damage or deformation to ensure structural integrity. Next, focus on inspecting the first and second piezoelectric ceramic plates 5 and 6, checking for secure connections with the nozzle mechanism 2 and surface defects such as cracks or breaks. Damage may affect subsequent vibration performance and energy recovery efficiency. Then, check the pressure sensor 3 and temperature sensor 4 using analog signals or specialized testing equipment to verify their proper functioning and the accuracy and stability of the output pressure and temperature data, ensuring the reliability of the sensing system. Finally, inspect the needle cone 7 for wear, scratches, or other defects, and ensure the integrity of the carbide material to guarantee normal operation under high-frequency vibration. Finally, check the dispensing hole 8. Gently probe it with a fine probe or similar tool to confirm that the hole is clear, free of obstructions, and that the hole walls are smooth to ensure smooth dispensing. Check the working status of the pulse power supply. Use the power indicator light, display screen, or dedicated testing instruments to confirm that the pulse power supply can output pulse voltage at the set frequency normally and that the voltage output is stable. Then, check the charge level of the thin-film supercapacitor. This can be checked using the capacitor's charge display device or relevant testing equipment. If insufficient charge is found, it can be charged using the vibration energy recovered from the piezoelectric ceramic sheet during the initial debugging or idle period, or by using an external temporary power supply. This ensures that the thin-film supercapacitor has sufficient charge to provide a stable power supply to the pressure sensor 3 and temperature sensor 4, ensuring the continuous and reliable operation of the sensing system during injection molding. Correctly install the multi-needle dot nozzle onto the injection molding equipment, ensuring a secure and accurate installation. Start the injection molding equipment and begin the injection molding operation according to the preset injection process parameters. During the injection molding process, pressure sensor 3 monitors the pressure changes inside the nozzle mechanism 2 in real time and transmits the pressure data to the control system or data acquisition unit of the injection molding equipment in the form of electrical signals; temperature sensor 4 simultaneously monitors the temperature changes inside the nozzle mechanism 2 in real time and also transmits the temperature data to the relevant system. Operators or the control system can closely monitor the pressure and temperature changes during the injection molding process through these real-time transmitted data, so as to promptly detect and handle any abnormalities, such as sudden increases or decreases in pressure or deviations in temperature from the set value. After several injection molding operations are completed, the pulse power supply will automatically output pulse voltage according to the preset program. Under the excitation of the pulse voltage, the first piezoelectric ceramic sheet 5 and the second piezoelectric ceramic sheet 6 generate the inverse piezoelectric effect, thereby driving the needle point cone 7 to generate high-frequency vibration. This high-frequency vibration is transmitted to the surface of the needle point cone 7 and the area around the ejector hole 8, so that the residual glue adhering to the surface of the needle point cone 7 and the ejector hole 8 is subjected to continuous vibration force.Under the influence of vibration, the adhesion between residual adhesive and the needle point cone 7 and the dispensing hole 8 is broken. The residual adhesive gradually loosens and falls off, and is discharged under the action of gravity or subsequent injection pressure, thereby achieving self-cleaning of the needle point cone 7 and the dispensing hole 8, ensuring smooth dispensing in subsequent injection molding operations. Simultaneously with the high-frequency vibration of the needle point cone 7, the first piezoelectric ceramic sheet 5 and the second piezoelectric ceramic sheet 6 undergo a positive piezoelectric effect due to the mechanical stress generated by the vibration. Under the action of the positive piezoelectric effect, mechanical energy is converted into electrical energy, which is then transmitted to a thin-film supercapacitor for storage through relevant circuits. The thin-film supercapacitor can efficiently store this electrical energy and provide stable power to the pressure sensor 3 and temperature sensor 4 when needed, achieving energy recycling and reducing dependence on external energy sources. After the injection molding operation is completed, stop the operation of the injection molding equipment according to the operating procedures. If cleaning, maintenance, or replacement of the multi-point needle nozzle is required, it can be carefully removed from the injection molding equipment, taking care to avoid collisions or damage to the components during disassembly. The pulse power supply is used again to activate the first piezoelectric ceramic sheet 5 and the second piezoelectric ceramic sheet 6, driving the needle cone 7 to generate high-frequency vibration. This thoroughly cleans the needle cone 7 and the dispensing hole 8, ensuring that all residual adhesive is shaken off and removed. After cleaning, each component of the device is inspected in detail. The first and second piezoelectric ceramic sheets 5 and 6 are checked for new damage caused by high-frequency vibration and injection molding. The pressure sensor 3 and temperature sensor 4 are checked to verify that they are still functioning properly and that the data output is accurate. The needle cone 7 is checked for new wear or scratches on the hard alloy surface. The dispensing hole 8 is checked to confirm that its interior is unobstructed and that the hole walls are still smooth. If any component is found to have a problem, it is repaired or replaced promptly to ensure that the device can operate normally and stably in the next injection molding operation, extending the device's service life and ensuring the continuity and stability of production. Therefore, this utility model is a very practical product and is worth promoting and applying.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-point needle tip, comprising an integral device body (1), characterized in that: The main body (1) of the overall device includes a nozzle mechanism (2). A pressure sensor (3) is embedded in the top of the outer ring surface of the nozzle mechanism (2). A temperature sensor (4) is embedded in the top of the outer ring surface of the nozzle mechanism (2). A first piezoelectric ceramic sheet (5) is provided on one side of the outer ring surface of the nozzle mechanism (2). A second piezoelectric ceramic sheet (6) is provided on one side of the outer ring surface of the nozzle mechanism (2). Multiple sets of needle point cones (7) are provided at the outer front end of the nozzle mechanism (2). A glue outlet hole (8) is provided on one side of the outer ring surface of the needle point cone (7).

2. The multi-needle dot nozzle according to claim 1, characterized in that: The first piezoelectric ceramic sheet (5) and the second piezoelectric ceramic sheet (6) are connected to a pulse power supply with a pulse frequency of 10-50kHz. The pulse voltage is automatically output every few injections to make the needle cone (7) vibrate at high frequency and shake off the residual glue at the needle cone (7) and the glue outlet (8).

3. The multi-needle dot nozzle according to claim 1, characterized in that: The first piezoelectric ceramic sheet (5) and the second piezoelectric ceramic sheet (6) recover vibration energy through the positive piezoelectric effect. The energy conversion efficiency is very high. The generated electrical energy is stored in a thin-film supercapacitor to power the pressure sensor (3) and the temperature sensor (4).

4. The multi-needle dot-type nozzle according to claim 1, characterized in that: The pressure sensor (3) is a MEMS piezoresistive sensor with a measurement range of 0-10MPa and extremely high accuracy. The temperature sensor (4) is a PT100 platinum resistance thermometer with a measurement range of 20-300℃ and extremely high accuracy, powered by a thin-film supercapacitor.

5. The multi-needle dot nozzle according to claim 1, characterized in that: The needle cone (7) is made of hard alloy material with extremely low surface roughness. Combined with the high-frequency vibration of the piezoelectric ceramic sheet, the residual glue blockage rate is extremely low.

6. The multi-needle dot-type nozzle according to claim 1, characterized in that: The diameter of the dispensing hole (8) is 0.1-0.5 mm, and the roughness of the hole wall is extremely low. It works in conjunction with the high-frequency vibration of the needle cone (7) to ensure smooth dispensing and easy removal of residual glue.

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