Needle cooling device

Abstract

The utility model relates to the technical field of machine needle cooling, in particular to a machine needle cooling device which comprises a sewing machine connecting plate, a high-pressure gas box, a gas control box, an electromagnetic valve, a two-stage cooling cavity, a spoiler, a temperature sensor and an airflow spray head. The needle is rapidly cooled through high-speed air flow in the first-stage cooling cavity, when the temperature of the needle is reduced to a preset value, mild cooling is achieved through low-speed air flow regulated and controlled by the second-stage cooling cavity and the spoiler in the second-stage cooling cavity, finally, the air flow is evenly sprayed to the surface of the needle through the air flow spray head, and the temperature sensor monitors the temperature of the needle in real time. And data are fed back to a control system, so that automatic adjustment in the cooling process is realized, the needle cooling device can quickly reduce the temperature of the needle, the high-temperature acting time is shortened, and thermal stress and needle deformation caused by overlarge temperature difference can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of needle cooling technology, and in particular to needle cooling devices. Background Technology

[0002] In modern high-speed sewing production, sewing machine efficiency is constantly improving, which in turn leads to a significant amount of friction and heat generated by the needle during high-speed operation. As the sewing machine's operating frequency increases, the needle temperature rises rapidly. If the temperature exceeds a certain range, it will seriously affect the quality of the sewn products. Excessively high needle temperatures can easily cause burns, localized melting, or scorching of the fabric during sewing, and may also cause defects such as fraying and breakage in the sewn products, reducing their appearance and lifespan.

[0003] Furthermore, high-temperature needles are prone to thermal stress. Prolonged exposure to high temperatures or rapid cooling environments can cause uneven thermal expansion and contraction of the needle material, leading to needle deformation and potentially even needle breakage or jamming, severely impacting production efficiency and equipment lifespan. Traditional needle cooling methods primarily rely on rapid single-stage airflow or natural cooling. However, these methods have significant limitations: while rapid cooling can lower the needle temperature quickly, a sudden drop can cause deformation due to thermal stress; conversely, relying solely on natural cooling cannot reduce the temperature to a safe range quickly enough, leaving the needle at a high temperature for extended periods.

[0004] Therefore, it is necessary to design a needle cooling device that can quickly reduce the temperature of the needle, shorten the high-temperature action time, and avoid thermal stress and deformation caused by excessive temperature difference. Utility Model Content

[0005] The purpose of this invention is to provide a needle cooling device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a sewing machine needle cooling device, including a sewing machine connecting plate, a high-pressure gas box, a gas control box, a solenoid valve, a dual-stage cooling chamber, a baffle plate, a temperature sensor, and an airflow nozzle. The high-pressure gas box is connected to the gas control box, and the gas control box is equipped with a solenoid valve for regulating the gas flow rate. The gas enters the dual-stage cooling chamber through the solenoid valve. The dual-stage cooling chamber includes a primary cooling chamber and a secondary cooling chamber. The primary cooling chamber is used to provide high-speed airflow to quickly reduce the temperature of the sewing machine needle. The secondary cooling chamber is equipped with a baffle plate to regulate the airflow speed and achieve gentle cooling. The airflow nozzle is located at the outlet of the secondary cooling chamber for uniformly spraying cooling airflow onto the surface of the sewing machine needle.

[0007] According to the above technical solution, the baffle plate adopts a porous structure, which can effectively disperse airflow, reduce airflow impact force, and improve cooling uniformity.

[0008] According to the above technical solution, the temperature sensor is a non-contact infrared temperature sensor.

[0009] According to the above technical solution, the airflow nozzle adopts an adjustable angle design, which can adjust the spray direction according to the position and movement trajectory of the needle.

[0010] According to the above technical solution, the airflow nozzle adopts an adjustable angle design, which can adjust the spray direction according to the position and movement trajectory of the needle to ensure the best cooling effect.

[0011] According to the above technical solution, the device is fixedly connected to the sewing machine connecting plate.

[0012] Compared with existing technologies, this utility model, by setting up a high-pressure gas box and a gas control box, and using a solenoid valve to precisely control the airflow supply, makes the cooling more stable and adjustable. The dual-stage cooling chamber consists of a primary cooling chamber and a secondary cooling chamber, and a baffle plate is set in the secondary cooling chamber to optimize the airflow distribution and ensure uniform cooling. The temperature sensor monitors the needle temperature in real time and links with the control system to achieve precise temperature control and avoid overheating or overcooling. The airflow nozzle adopts an adjustable angle design to ensure that the airflow accurately covers the needle and improves the cooling effect. The overall structure is compact and the modular design facilitates installation and maintenance, improves the adaptability and service life of the equipment, and effectively overcomes the problems of uneven cooling, slow response, and inconvenient maintenance of existing needle cooling systems. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is an overall structural diagram of the needle cooling device proposed in this utility model;

[0015] Figure 2 This is a detailed structural diagram of the internal structure of the dual-stage cooling chamber in the needle cooling device proposed in this utility model;

[0016] Figure 3 This is a top view of the needle cooling device proposed in this utility model.

[0017] In the diagram: 1 Sewing machine connecting plate, 2 High-pressure gas box, 3 Gas control box, 31 Solenoid valve, 4 Two-stage cooling chamber, 41 Primary cooling chamber, 42 Secondary cooling chamber, 43 Baffle plate, 5 Temperature sensor, 6 Airflow nozzle. Detailed Implementation

[0018] 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.

[0019] Example:

[0020] Reference Figure 1-3 This application discloses a needle cooling device, including a sewing machine connecting plate 1, a high-pressure gas box 2, a gas control box 3, a solenoid valve 31, a two-stage cooling chamber 4, a primary cooling chamber 41, a secondary cooling chamber 42, a baffle plate 43, a temperature sensor 5, and an airflow nozzle 6. The sewing machine connecting plate 1 serves as a basic mounting platform. On one side, the gas control box 3 and the high-pressure gas box 2 are mounted on the connecting plate via bolts. On the other side, it is directly welded to the sewing machine body, ensuring the stability of the entire machine during sewing. The high-pressure gas box 2 stores pre-treated high-pressure gas. One side of its outer shell is connected to the sewing machine connecting plate 1 via a fixed bracket. A dedicated interface is reserved between it and the gas control box 3. The two are connected by a sealed connecting pipe. The gas control box 3 is located on the other side of the sewing machine connecting plate 1 and works in conjunction with the high-pressure gas box 2. It integrates a solenoid valve 31, which is the core component of gas control. After receiving a signal from the sewing machine operating system, the solenoid valve 31 quickly opens or closes the high-pressure gas inlet and outlet channels to ensure that the cooling program can be started immediately after sewing is completed.

[0021] The dual-stage cooling chamber 4 consists of a primary cooling chamber 41 and a secondary cooling chamber 42. The primary cooling chamber 41 is mainly responsible for initial cooling using high-velocity gas, employing an internal flow guide design to ensure that the incoming high-pressure gas can quickly and evenly act on the surface of the needle. The secondary cooling chamber 42 is activated after the primary cooling. It is equipped with a baffle plate 43, which disperses and slows down the gas flow rate by evenly opening multiple small holes on its surface. The baffle plate 43 is fixed to the inner wall of the secondary cooling chamber 42 with a snap-fit ​​mechanism, so that the gas is subjected to a three-layer continuous flow-blocking effect when passing through the baffle plate, significantly reducing the flow rate and thus achieving gentle cooling of the needle. The top of the dual-stage cooling chamber 4 is designed with a magnetic connection structure, which fits tightly with the airflow nozzle 6 through magnetic attraction, allowing the finally adjusted airflow to be evenly ejected through the nozzle 6.

[0022] Temperature sensor 5 is installed at the transition position between airflow nozzle 6 and dual-stage cooling chamber 4, and can feed back needle temperature information to the control system of solenoid valve 31.

[0023] When this device is in use, after the sewing machine finishes its work, the control system first triggers the solenoid valve 31 to open, allowing high-pressure gas to enter the primary cooling chamber 41 from the high-pressure gas tank 2 via the gas control box 3. The high-speed flow of the gas quickly lowers the needle temperature to a predetermined range. At this time, the temperature sensor 5 monitors the needle temperature in real time. When the temperature reaches the preset value, the system controls the solenoid valve 31 to quickly close the gas passage of the primary cooling chamber to prevent overcooling. Subsequently, the system automatically opens the secondary cooling chamber 42, where low-velocity gas controlled by the baffle plate 43 is evenly sprayed out through the airflow nozzle 6, providing continuous and gentle cooling to the needle and preventing thermal stress and deformation caused by excessive temperature differences. Throughout the cooling process, the connections between components not only ensure the smooth and sealed gas passages but also guarantee the stability and durability of the mechanical structure, enabling the needle cooling device to maintain efficient and reliable operation even in high-speed sewing environments.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A needle cooling device, comprising a sewing machine connecting plate (1), a high-pressure gas box (2), a gas control box (3), a solenoid valve (31), a two-stage cooling chamber (4), a baffle plate (43), a temperature sensor (5), and an airflow nozzle (6), characterized in that: The high-pressure gas box (2) is connected to the gas control box (3), and the gas control box (3) is equipped with a solenoid valve (31) for regulating the gas flow rate; The gas enters the two-stage cooling chamber (4) via a solenoid valve (31); The dual-stage cooling chamber (4) includes a primary cooling chamber (41) and a secondary cooling chamber (42); The primary cooling chamber (41) is used to provide high-speed airflow to quickly reduce the temperature of the needle; The secondary cooling chamber (42) is equipped with a baffle plate (43) to regulate the airflow speed and achieve gentle cooling; The airflow nozzle (6) is located at the outlet of the secondary cooling chamber (42) and is used to uniformly spray cooling airflow onto the surface of the needle.

2. The needle cooling device according to claim 1, characterized in that: The baffle plate (43) has a porous structure, which can effectively disperse airflow, reduce airflow impact force, and improve cooling uniformity.

3. The needle cooling device according to claim 1, characterized in that: The temperature sensor (5) is a non-contact infrared temperature sensor.

4. The needle cooling device according to claim 1, characterized in that: The airflow nozzle (6) adopts an adjustable angle design, which can adjust the spray direction according to the position and movement trajectory of the needle.

5. The needle cooling device according to claim 1, characterized in that: The airflow nozzle (6) adopts an adjustable angle design, which can adjust the spray direction according to the position and movement trajectory of the needle to ensure the best cooling effect.

6. The needle cooling device according to claim 1, characterized in that: The device is fixedly connected to the sewing machine connecting plate (1).

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