A new type of heating and shaping device for nickel-titanium medical spring

Abstract

The utility model relates to a novel nickel titanium medical spring heating and shaping device, it includes universal fixed support, the universal fixed support is composed of two sections of upper and lower, the lower section is fixed section, the upper section is clamping section, the top of fixed section and the bottom of clamping section articulate, both opposite rotation fixes through the locating pin, the top of clamping section is fixed with a clamping head, the end of clamping head clamps the hot air gun heating pipe, the bottom of fixed section of universal fixed support links to a temperature controller, and the hot air gun heating pipe heats the spring to be coiled, the hot air gun heating pipe is connected with the temperature controller through the trachea, and the hot air gun heating pipe, temperature controller are also connected with the external air compressor. The coiling process and the shaping of the spring overlap, the time of spring unloading from the machine and installing on the mandrel and heat treatment in the furnace is saved, and the device can continuously and stably work.

Description

Technical Field

[0001] This utility model relates to a heating and shaping device, and more particularly to a heating and shaping device for nickel-titanium medical springs. Background Technology

[0002] Unlike other medical metal materials, nickel-titanium alloys have been widely used in the biomedical field not only because of their excellent biocompatibility, but more importantly because they can integrate sensing and actuation. In most cases, their medical applications utilize the fact that as the nickel-titanium alloy component transitions from an external state (at ambient temperature, such as room temperature or ice-salt water, with external constraints) to an internal state (at body temperature, with constraints removed), the component senses the difference between the two conditions and alters or adjusts the microscopic crystal structure within the material, macroscopically exhibiting shape memory or superelasticity.

[0003] Modern spring products are typically manufactured by winding, heat treatment, pickling, polishing, and passivation of metal wire. In conventional nickel-titanium spring production, the process often involves machine winding followed by heat treatment. After winding, the spring needs to be fixed on a mandrel before undergoing furnace heat treatment. This process inevitably leads to surface defects such as scratches. Furthermore, the method of winding before heat treatment also affects production efficiency and product delivery cycle. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a novel heating and shaping device for nickel-titanium medical springs. This device can avoid scratches on the appearance of the springs by changing the production method, save transportation waste from winding to furnace loading, and improve production efficiency.

[0005] The purpose of this utility model is achieved as follows: A novel heating and shaping device for nickel-titanium medical springs includes a universal fixing bracket, which is mounted on the moving device of a nickel-titanium wire winding machine via clamping jaws. The universal fixing bracket consists of two sections: a lower fixing section and an upper clamping section. The top of the fixing section is hinged to the bottom of the clamping section, and the two sections are fixed by a positioning pin after relative rotation. A clamping head is fixed to the top of the clamping section, and the end of the clamping head clamps the heating tube of a hot air gun. The bottom of the fixing section of the universal fixing bracket is connected to a temperature controller. The heating tube of the hot air gun heats the spring to be wound. The heating tube of the hot air gun is connected to the temperature controller via an air pipe. The heating tube of the hot air gun and the temperature controller are also connected to an external air compressor.

[0006] The fixed section is a telescopic tube, which consists of inner and outer sleeves. After the relative height of the inner and outer sleeves is adjusted, they are fixed in the middle by a positioning pin.

[0007] The thermostat comes with an LCD screen.

[0008] The thermostat has heating, cooling, and emergency stop buttons on the outside.

[0009] This utility model discloses a novel nickel-titanium medical spring heating and shaping device, which has the following advantages: Compared to previous production methods, the winding process of this device overlaps with the shaping of the spring, saving the time of removing the spring from the machine and installing it on the mandrel for heat treatment in the furnace, and avoiding appearance problems such as scratches caused by disassembly or furnace entry.

[0010] Furthermore, the contact distance between the air outlet of the heating tube and the product is constant, ensuring the uniformity of the spring's heating. Each section can be shaped and completed after winding. In addition, the device is inexpensive, easy to operate, and can work continuously and stably. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a novel nickel-titanium medical spring heating and shaping device according to the present invention.

[0012] In the diagram: 1. Universal mounting bracket; 2. Fixing section; 3. Clamping section; 4. Positioning pin; 5. Clamping head; 6. Hot air gun heating element; 7. Temperature controller; 8. Spring to be wound. Detailed Implementation

[0013] See Figure 1 This utility model relates to a novel heating and shaping device for nickel-titanium medical springs, which includes a universal fixing bracket 1. The universal fixing bracket 1 is installed on the moving device of the nickel-titanium wire winding machine through a fastening clamp and moves together with the moving device of the winding machine.

[0014] The universal mounting bracket 1 consists of two sections: a lower fixing section 2 and an upper clamping section 3. The fixing section 2 is a telescopic tube composed of inner and outer sleeves. After adjusting the relative height of the inner and outer sleeves, they are fixed in the middle by a positioning pin 4, thus achieving telescopic movement. The top of the fixing section 2 is hinged to the bottom of the clamping section 3, and the two are fixed by the positioning pin 4 after relative rotation. A clamping head 5 is fixed to the top of the clamping section.

[0015] The end of the clamping head 5 clamps the heating tube 6 of the hot air gun. The bottom of the fixing section 2 of the universal fixing bracket 1 is connected to a thermostat 7. The universal fixing bracket 1 acts as a physical connection medium, connecting the heating tube 6 of the hot air gun and the thermostat 7 at both ends. The heating tube 6 of the hot air gun is used to heat the spring 8 to be wound. The heating tube 6 of the hot air gun is connected to the thermostat 7 through an air pipe. The heating tube 6 of the hot air gun and the thermostat 7 are also connected to an external air compressor. The airflow of the heating tube 6 of the hot air gun can be changed by adjusting the air pressure. The thermostat 7 is equipped with an LCD screen that can display the temperature in real time. The thermostat 7 is equipped with heating, cooling and emergency stop buttons on the outside.

[0016] The working process of this new type of nickel-titanium medical spring heating and shaping device is as follows: First, adjust the distance between the hot air gun heating element and the core wire of the product. After adjustment, fix the bracket. Then, turn on the thermostat and set the temperature to the required 500℃. The air compressor generates compressed air, which is transferred from the air pipe to the heating element. After the heating element is heated, it generates a concentrated flow of hot air at the outlet. The hot air is then transferred to the nickel-titanium wire (unformed spring) being wound. After the temperature rises, the spring winding can begin. During the spring winding process, the hot air gun heating element moves with the machine. Since the distance between the air outlet and the spring is constant, the machine can heat the spring evenly for each section wound. Each section is shaped and completed. Once the spring is wound, the shaping is complete.

Claims

1. A new type of heating and setting device for nickel-titanium medical spring, characterized in that: It includes a universal fixing bracket, which is installed on the moving device of the nickel-titanium wire winding machine through a fastening jaw. The universal fixing bracket consists of two sections: a lower fixing section and an upper clamping section. The top of the fixing section is hinged to the bottom of the clamping section, and the two are fixed by a positioning pin after relative rotation. A clamping head is fixed to the top of the clamping section, and the end of the clamping head clamps the heating tube of the hot air gun. The bottom of the fixing section of the universal fixing bracket is connected to a temperature controller. The heating tube of the hot air gun heats the spring to be wound. The heating tube of the hot air gun is connected to the temperature controller through an air pipe. The heating tube of the hot air gun and the temperature controller are also connected to an external air compressor.

2. A new type of heating and setting device for nickel-titanium medical spring according to claim 1, characterized in that: The fixed section is a telescopic tube, which consists of inner and outer sleeves. After the relative height of the inner and outer sleeves is adjusted, they are fixed in the middle by a positioning pin.

3. The novel heating and setting device for nickel-titanium medical spring according to claim 1, characterized in that: The thermostat comes with an LCD screen.

4. The novel heating and setting device for nickel-titanium medical spring according to claim 1, characterized in that: The thermostat has heating, cooling, and emergency stop buttons on the outside.

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