Bending forming device and bending forming process for high-resilience arch wire

Abstract

The invention discloses a bending and forming device and a bending and forming process for a high-resilience arch wire, the bending and forming device comprises a straight long-strip mold, the long-strip mold is provided with an arch wire accommodating groove suitable for accommodating the straight arch wire, and the long-strip mold is suitable for being bent into an arch with a plurality of bent parts under the action of external force. After the arch wire is placed in the straight long-strip mold, the long-strip mold and the arch wire are bent together, so that the long-strip mold and the arch wire jointly form an ideal arch shape. In the invention, as the arch wire and the long-strip mold are bent together, the risk of pulling the arch wire is avoided, the diameter of the long-strip mold is thicker, the arch wire is easier to bend by a manipulator, and the arch wire is formed by one-step bending, so that the arch wire is bent more quickly and stably compared with the previous method that the arch wire is roughly bent firstly and then is bent into a groove, and the bending efficiency is improved. And the arch wire bending efficiency and effect are obviously improved.

Description

Technical Field

[0001] This invention relates to the field of orthodontics, specifically to a bending and shaping device for high-resilience archwires, and a bending and shaping process for high-resilience archwires using this device. Background Technology

[0002] In the field of orthodontics, archwire bending is an essential step in archwire preparation. It involves applying external force to bend the originally straight archwire into a specific shape, altering its angles, twists, and curvature on different planes. After the bent archwire is placed on the bracket, its elasticity adjusts the tooth position in three-dimensional space. With the development of personalized orthodontic treatment, increasingly higher precision is required in the bending of personalized archwires.

[0003] Especially in personalized lingual orthodontics, clinical practice involves custom-bending archwires to suit each patient's individual needs and treatment goals. This involves specific three-dimensional bends at certain points on the archwire to achieve the desired control effect for different tooth positions. These personalized archwires can be used in lingual orthodontic appliances to achieve excellent lingual orthodontic results.

[0004] Traditional bowwire bending techniques mainly fall into two categories: manual bending by skilled technicians or physicians, or automated bending using robotic arms (multi-axis robots). Manual bending is generally time-consuming, lacks precision, and is inefficient. Robotic bending, on the other hand, involves expensive initial equipment investment, and current multi-axis robots are only suitable for bending materials with low resilience, such as stainless steel and TMA. For materials like nickel-titanium shape memory alloys, which offer excellent corrective properties but also high resilience, robots struggle to bend accurately, easily damaging the bowwire and its internal structure, leading to breakage during wear. Currently, some foreign manufacturers incorporate laser treatment into the bending process, using lasers to heat the nickel-titanium wire for shaping; however, this technology is not yet mature, and the equipment and process costs are high.

[0005] Due to limitations of traditional bending techniques, the applicant previously independently developed a bowwire bending method and its mold, and has obtained Chinese invention patent authorization. For details, please refer to the Chinese authorized invention "A Bowwire Bending Method" under announcement number CN109396294B. This method first prepares a bowwire heat treatment and shaping mold. Using a cutting machine, an arc-shaped groove (the curvature of the groove is close to the curvature of the bowwire) is precisely cut into a thin metal plate according to the bowwire's design shape drawing or design curve data. Then, a lower pressure plate is placed below the thin metal plate as a support plate, and the bowwire to be shaped is placed into the arc-shaped groove. Another upper pressure plate is then placed above the thin metal plate, and the upper pressure plate, thin metal plate, and lower pressure plate are pressed together. Finally, it is placed in a heating device for heat treatment, allowing the bowwire to be heat-shaped within the arc-shaped groove, resulting in a bowwire with the ideal curvature shape.

[0006] In addition, there is a similar technical solution that uses machining to prepare the heat-setting mold. This also involves taking a whole piece of metal sheet blank and cutting an arc-shaped groove into the metal sheet using traditional machining methods such as cutting and milling. Then, the bow wire is bent and placed into the groove for heat treatment and shaping. This method does not require a lower pressure plate, but an upper pressure plate still needs to be fastened to the metal sheet to clamp the bow wire.

[0007] Both of the above bending techniques for slotting metal sheets have common defects: (1) High cost: Whether using laser cutting or machining, a whole piece of metal sheet must be used as the blank. Since the bow wire needs to be heat-treated and shaped afterward, the metal blank must be made of high-temperature resistant metal material, which has a relatively high material cost. Moreover, the loss and waste generated by cutting the sheet are large; (2) High pollution: Cutting the metal sheet will bring a large amount of dust pollution, resulting in low cleanliness and dust residue in the bow groove; (3) Frequent clamping leads to low efficiency: After the bow wire is inserted into the groove, the metal sheet and pressure plate need to be clamped and fixed before it can be transferred to the heat treatment equipment. For each bow wire shaped, the mold needs to be disassembled and clamped again, resulting in low shaping efficiency.

[0008] Based on this, the applicant independently developed a new archwire bending and shaping mold and process, which can be found in Chinese invention application CN117358849A, entitled "An Archwire Heat Treatment Shaping Mold and Its Manufacturing Method". Unlike the previous approach of cutting metal sheets, this technology uses 3D printing to directly print an arch-shaped mold. The arch shape of the grooves inside the mold matches the ideal arch shape of the bent archwire. The archwire is placed into the grooves of the mold, and then held in place by a clamping fixture. The archwire, along with the mold, is then placed in a heat treatment device for shaping. This process adopts a completely new approach, eliminating the use of large metal sheet blanks and instead using 3D additive manufacturing to directly print a small mold in the shape of the dental arch. This significantly reduces material and waste costs, generates no waste, and eliminates machining pollution. Furthermore, it eliminates the need for frequent bolt handling and sheet movement, saving time and effort, and significantly improving archwire clamping efficiency. However, after actual clinical application, the applicant discovered that this bending technology still has some significant drawbacks. (1) 3D additive manufacturing has high production costs. Although it has the advantage of being clean, it requires the use of 3D printing equipment to manufacture the mold body, which has obvious disadvantages in mass production. (2) More importantly, the groove used to accommodate the archwire is also toothed. This means that the operator must first bend the originally straight archwire by hand to a shape close to the arch shape of the groove before the archwire can be smoothly inserted into the groove. Otherwise, the originally straight archwire cannot be directly put into the curved groove. The above-mentioned metal sheet grooving mold also has this problem. However, for archwire materials with high resilience such as nickel-titanium wire, bending the archwire is very difficult and requires a lot of effort. It is easy to damage the metal structure if you are not careful. Moreover, sometimes the bending part on the archwire (such as mushroom bend) has a large curvature (see Figure 8 Even with guide posts and other means to guide the archwire into the groove, it's difficult to bend the uneven, sharply angled sections to the correct curvature by hand, making it extremely difficult to insert the archwire into the groove and severely limiting efficiency. Furthermore, after successful insertion, the operator must quickly remove the retaining clamp to hold the archwire firmly in the groove; otherwise, its high resilience can cause it to easily pop out of the groove, making the operation very cumbersome and inconvenient. Additionally, accessories like retaining clamps and guide posts increase the cost of additional components. Summary of the Invention

[0009] To overcome the shortcomings of the prior art, one objective of this invention is to provide a bending and shaping device for high-resilience archwires, which can solve the problems of high production cost, numerous parts, and difficulty in inserting archwires into the mold in existing archwire bending devices. Another objective of this invention is to provide a bending and shaping process based on this device, which can solve the problems of high production cost, low production efficiency, and difficulty in inserting archwires into the mold in existing archwire bending processes.

[0010] This invention is achieved through the following technical solution:

[0011] A bending and shaping device for high-resilience bowwires includes: a straight elongated mold; the elongated mold has a bowwire receiving groove along its length, suitable for accommodating the straight bowwire, the top of the bowwire receiving groove is open and the bottom is closed; the cross-sectional shape of the bowwire receiving groove matches the cross-sectional shape of the bowwire; the elongated mold is suitable for being subjected to external force and bent into an arc shape with several bends.

[0012] Furthermore, the bottom of the elongated mold is provided with several ejection through holes, the upper end of which extends through the bottom of the bowwire receiving groove.

[0013] Furthermore, the elongated mold is made of metal.

[0014] Furthermore, the elongated mold is a mold made by metal powder injection molding, or a mold made by machining on metal materials.

[0015] Furthermore, the cross-sectional shape of the bowwire receiving groove is any one of the following: circular, square, elliptical, horseshoe-shaped, polygonal, or irregular.

[0016] Furthermore, the cross-sectional shape of the bowwire receiving groove is square, and the cross-sectional shape of the elongated mold is U-shaped.

[0017] A bending and shaping process for high-resilience bowwires, using a high-resilience bowwire bending and shaping device, includes: S1, a step of preparing a straight mold: designing an injection mold according to the shape of the elongated mold, opening the mold, the cavity shape of the injection mold matching the elongated mold; injecting metal powder into the mold cavity, shaping, and opening the mold to obtain the elongated mold as described in claim 1, which is straight; S2, a step of bowwire insertion: inserting the straight bowwire before bending into the bowwire receiving groove of the elongated mold, the bowwire being tightly accommodated in the groove. S3, Bending mold step: The ideal shape information of the archwire is imported into the control system of the robot, and the robot is started to bend the straight strip mold into an arc-shaped mold. At this time, the shape of the archwire receiving cavity matches the ideal shape of the archwire, and the archwire in the archwire receiving cavity is bent into the ideal shape; S4, Heat treatment and shaping step: The bent strip mold and the archwire are sent into the heat treatment equipment for heat shaping; S5, Archwire removal step: After heat shaping, the bent archwire is removed from the strip mold.

[0018] Furthermore, in step S6: a tool is inserted into the ejection hole at the bottom of the long mold to remove the bent bowwire from the long mold.

[0019] Further, in step S1: metal powder is injected into the cavity of the injection mold to obtain a flat, elongated mold made of metal.

[0020] Compared with existing technologies, the beneficial effects achieved by this invention are as follows:

[0021] By first preparing a straight, elongated mold, the archwire receiving groove on the mold is also straight. Since the incoming archwire material is originally a straight strip, it can be easily embedded into the archwire receiving groove of the elongated mold in this invention. Because materials such as nickel-titanium wire have strong resilience, if it is roughly bent before being inserted into the mold groove as in the prior art, it is very difficult to insert the archwire into the groove, and it is easy to bounce back and slip out. Moreover, if it is not quickly secured after being inserted into the groove, the archwire can easily bounce back and slip out.

[0022] After the bowwire is placed into a flat, elongated mold, a robotic arm bends the mold and bowwire together to achieve the desired bow shape. Previously, directly bending the bowwire with a robotic arm easily damaged the internal metal structure and lost internal stress. Furthermore, the bowwire's diameter is very small, making it difficult for the robotic arm to accurately bend parts with small bending radii and large bending angles. However, in this invention, because the bowwire is bent together with the elongated mold, the risk of damaging the bowwire is avoided. The elongated mold has a larger diameter, making it easier for the robotic arm to bend, and the bowwire is bent in one step. Compared to the previous method of roughly bending the bowwire before placing it in the mold for final bending, the bowwire bending process in this invention is faster and more stable, significantly improving the efficiency and effectiveness of bowwire bending.

[0023] Therefore, the present invention has the following advantages: (1) Compared with manual bending, the present invention has high bending accuracy, high efficiency and high degree of automation; compared with direct bending by robotic arms, the present invention is less likely to damage the internal metallographic structure of the archwire, which is conducive to ensuring bending quality and correction effect; (2) Compared with using metal sheet blanks for cutting and grooving, the mold structure of the present invention is small and lightweight, with low material cost and low processing pollution; (3) Compared with using 3D printing, the present invention uses the traditional mold injection molding method to produce archwire molds, which is more conducive to standardized and large-scale production of molds. Especially in orthodontic treatment, multiple sets of archwires are used in one treatment cycle, and the medical cost of this invention will be lower; (4) It is completely different from the previous approach of making an arch-shaped groove on the mold and then bending the straight archwire and forcibly inserting it into the arch-shaped groove. This invention first manufactures a straight mold, which makes it easy to insert the straight finished archwire into the archwire groove of the mold. It completely avoids the problem that the high elasticity archwire was difficult to bend before entering the groove and was easy to rebound and fall out after entering the groove. It is easier and more convenient to operate, significantly improving the efficiency of archwire bending and the quality of archwire shaping is more stable. (5) Moreover, since the archwire is still straight after entering the mold, it will not rebound and fall out of the groove due to high elasticity. Therefore, it is not necessary to use a fixing clamp to press the archwire, nor is it necessary to add a guide post to reduce the difficulty of archwire entering the mold by forming a guide channel. In other words, this device can reduce the number of other parts, the structure is simpler, and the manufacturing cost is lower. Attached Figure Description

[0024] Figure 1 The diagram shows the structural changes of the long mold along with the bow wire when bent together.

[0025] Figure 2 The diagram shows the bowwire being inserted into a straight, elongated mold.

[0026] Figure 3 The diagram shown is another schematic of the bowwire being inserted into a straight, elongated mold.

[0027] Figure 4 The diagram shows the structure of a straight, elongated mold.

[0028] Figure 5 The diagram shows the bowwire and long strip mold after bending.

[0029] Figure 6 The diagram shows the bowwire and long strip mold after bending.

[0030] Figure 7 The diagram shows the state of the long strip mold after bending.

[0031] Figure 8 The diagram shown is a schematic of the bowwire structure after bending.

[0032] Figure 9 The diagram shows the flow steps of the bending and shaping process of the present invention.

[0033] In the diagram: 10, long strip mold; 11, bow wire receiving groove; 12, ejection through hole; 20, bow wire; 21, bending section. Detailed Implementation

[0034] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0035] In the description of this invention, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] This invention discloses a bending and shaping device for high-resilience bowwires, see reference. Figures 2-4The system includes a straight, elongated mold 10. Along its length, the mold 10 has a bowwire receiving groove 11 suitable for accommodating the straight bowwire 20. The bowwire receiving groove 11 is a recessed structure with an open top and a closed bottom. The cross-sectional shape of the bowwire receiving groove 11 matches the cross-sectional shape of the bowwire 20. Specifically, if the bowwire 20 is square, the bowwire receiving groove 11 is a square groove; if the bowwire 20 is round, the bowwire receiving groove 11 is a cylindrical groove. Of course, the cross-sectional shape of the bowwire 20 can be any of the circular, square, elliptical, horseshoe, polygonal, or irregular shapes known in the art. The elongated mold 10 is made of metal, preferably stainless steel, copper, aluminum alloy, etc. (See reference). Figure 1 When a straight, elongated mold 10 is subjected to external force, it can be bent and, according to the ideal shape of the bowwire 20, bend into a bowwire 20 with several bends 21, as shown in the figure. Figures 5-7 It should be noted that the archwire 20 is bent from a straight wire into an ideal arch shape. This ideal arch shape is calculated and designed based on the patient's dental condition and treatment goals. This ideal arch shape of the archwire 20 can pull the patient's teeth to move and guide them to the ideal position; the arch shape will have several bends 21 (such as mushroom bends) (see...). Figure 8 Therefore, the shape formed by the bending of the long strip mold 10 under the action of external force is the ideal bow shape of the bow wire 20.

[0039] Preferably, see Figure 3 and Figure 6 Several ejection through holes 12 are provided at the bottom of the long mold 10. The upper end of the ejection through hole 12 passes through the bottom of the bow wire receiving groove 11. Since the bow wire 20 is tightly housed in the bow wire receiving groove 11, the bow wire 20 can be easily ejected from the groove through the ejection through hole 12.

[0040] Preferably, the elongated mold 10 is manufactured using a metal powder injection molding process, allowing for mass production of straight elongated molds 10 after mold opening. Alternatively, it can be manufactured using metal machining. A straight, elongated metal strip can be cut first, and then a bowwire receiving groove for placing the straight bowwire can be cut on the metal strip using machining methods such as cutting and milling. This differs from the prior art of cutting bow-shaped grooves on large metal blanks. The machining method of this application cuts a straight, slender metal strip, which does not generate a large amount of waste or loss, and the bowwire receiving groove machined on the metal strip is straight rather than bow-shaped.

[0041] This invention also discloses a bending and shaping process for high-resilience bowwires, which is achieved using the aforementioned bending and shaping device. (See reference...) Figure 9 The bending and shaping process of the present invention includes the following steps:

[0042] S1. Preparation of the straight mold: The elongated mold 10 is prepared by injection molding. Specifically, the shape of the injection mold is designed according to the shape of the elongated mold 10, and the shape of the mold cavity inside the injection mold matches the shape of the elongated mold 10. During preparation, metal powder (preferably stainless steel powder, to prepare a stainless steel elongated mold 10) is injected into the mold cavity, and after shaping, the mold is opened to obtain the elongated mold 10 in a straight shape. Alternatively, the elongated mold 10 can be prepared by machining. First, a straight elongated metal strip is cut, and then the surface of the metal strip is cut with machining methods such as cutting and milling to create a bowwire receiving groove 11 for placing the straight bowwire.

[0043] S2. Bowwire Insertion Step: The straight, elongated bowwire 20, before bending, is inserted into the bowwire receiving groove 11 of the elongated mold 10, ensuring the bowwire 20 is tightly contained within the groove. Due to the high resilience of materials such as nickel-titanium wire, bending it roughly before inserting it into the mold groove, as in existing technologies, makes bowwire 20 insertion extremely difficult. Furthermore, if not quickly secured after insertion, bowwire 20 can easily bounce out. In this process, the straight incoming bowwire 20 is easily inserted into the bowwire receiving groove 11 of the elongated mold 10, completely avoiding the problems of difficult bending of the highly elastic bowwire 20 before insertion and its tendency to bounce out after insertion.

[0044] S3. Bending Die Step: This step is completed using a robotic arm or multi-axis robot (archwire 20 bending robot). The ideal shape information of the archwire 20 is imported into the control system of the robotic arm or multi-axis robot. The robotic arm or multi-axis robot bends the straight, elongated die 10 into an arch-shaped die, while the archwire 20 receiving cavity also bends accordingly. Ultimately, the shape of the archwire 20 receiving cavity matches the ideal shape of the archwire 20. Thus, the archwire 20, tightly contained within the archwire 20 receiving cavity, is bent into the ideal shape. See... Figure 1 .

[0045] In the past, using robotic arms or multi-axis robots to directly bend the straight archwire 20 easily damaged the internal metal structure of the archwire 20 and caused some internal stress to be lost. Moreover, the diameter of the archwire 20 itself is very small, and for some parts with small bending radii and large bending angles, it is even more difficult for robotic arms to bend accurately. However, in this invention, since the archwire 20 is bent together with the long strip mold 10, the risk of tearing the archwire 20 is avoided. In addition, the long strip mold 10 itself has a larger diameter, making it easier for the robotic arm to bend. The archwire 20 can be bent into shape in one go. Compared with the previous method of roughly bending it first and then bending it into the groove, the archwire 20 bending in this invention is faster and more stable, significantly improving the efficiency and effect of archwire 20 bending.

[0046] This process completely abandons the previous approach of first cutting out the bow-shaped groove, then bending the straight bow wire 20 and forcibly inserting it into the groove. Instead, a straight mold is first manufactured, allowing the straight bow wire 20 to be easily inserted into the bow wire receiving groove 11 of the mold. This completely solves the problems caused by the high resilience of nickel-titanium material, such as the time-consuming and laborious bending of the bow wire 20 before insertion into the groove, the tendency for it to bounce off after bending, and the tendency for it to bounce off after insertion into the groove. The clamping operation of the bow wire 20 is easier and less labor-intensive, and the insertion into the groove is more stable, significantly improving the efficiency of the bow wire bending technology and making the bow forming quality more stable.

[0047] S4. Heat treatment and shaping step: After bending, the bow-shaped mold and bow wire 20 are sent into the heat treatment equipment for heat shaping.

[0048] S5. Archwire Removal Step: After heat setting, use a tool to insert into the ejection hole 12 at the bottom of the long strip mold 10 to remove the bent archwire 20 from the long strip mold 10, obtaining the bent archwire 20, which can be worn on the bracket for traction and orthodontic treatment of the teeth.

[0049] The technical effects of this invention are as follows:

[0050] First, a straight, elongated mold 10 is prepared. The archwire receiving groove 11 on the elongated mold 10 is also straight. Since the incoming material of the archwire 20 is originally a straight strip, the archwire 20 can be easily embedded into the archwire receiving groove 11 of the elongated mold 10 in this invention. Because materials such as nickel-titanium wire have strong resilience, if it is to bend it roughly before inserting it into the mold groove as in the prior art, it is very difficult to insert the archwire 20 into the groove. It is easy for it to bounce back and slip out of your hand. Moreover, if it is not fixed quickly and promptly after being inserted into the groove, the archwire 20 can easily bounce back and slip out.

[0051] After the bowwire 20 is placed into the flat, elongated mold 10, a robotic arm bends the mold 10 and bowwire 20 together to achieve the desired bow shape. Previously, directly bending the bowwire 20 with a robotic arm easily damaged the internal metal structure and lost some internal stress. Furthermore, the diameter of the bowwire 20 is very small, making it difficult for the robotic arm to accurately bend parts with small bending radii and large bending angles. However, in this invention, because the bowwire 20 is bent together with the elongated mold 10, the risk of damaging the bowwire 20 is avoided. The elongated mold 10 has a larger diameter, making it easier for the robotic arm to bend, and the bowwire 20 is bent in one step. Compared to the previous method of roughly bending it before placing it in the mold for shaping, the bowwire 20 bending in this invention is faster and more stable, significantly improving the efficiency and effectiveness of bowwire 20 bending.

[0052] Therefore, the present invention has the following advantages:

[0053] (1) Compared with manual bending, the present invention has high bending accuracy, high efficiency and high degree of automation; compared with direct bending by robotic arm, the present invention is less likely to damage the internal metallographic structure of the archwire 20, which is conducive to ensuring bending quality and correction effect.

[0054] (2) Compared with cutting and slotting metal sheet blanks, the mold structure of the present invention is small and lightweight, with low material cost and low processing pollution;

[0055] (3) Compared with 3D printing, this invention uses traditional injection molding to produce archwire molds, which is more conducive to standardized and mass production of molds. In particular, multiple sets of archwires are used in one orthodontic treatment cycle, so the medical cost of this invention will be lower.

[0056] (4) Completely different from the previous approach of making an arc groove on a mold and then bending the straight bow wire and forcibly inserting it into the arc groove, this invention first manufactures a straight mold, which makes it easy to easily insert the straight finished bow wire 20 into the bow wire receiving groove 11 of the mold. This completely avoids the problem that the high elasticity bow wire 20 was difficult to bend before entering the groove and was easy to bounce out after entering the groove. It is easier and more convenient to operate, significantly improves the efficiency of bow wire 20 bending, and makes the quality of bow forming more stable.

[0057] (5) Moreover, since the archwire 20 remains straight after being inserted into the mold (see... Figure 2 It will not bounce out of the groove due to its high resilience, so there is no need to use a fixing clamp to press the bow wire 20, nor is it necessary to add a guide post to reduce the difficulty of the bow wire 20 entering the mold by forming a guide channel. In other words, this device can reduce the number of other parts, has a simpler structure, and lower manufacturing cost.

[0058] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A bending and setting device for a high-resilience archwire, comprising: The long strip-shaped mold is straight, and a wire accommodating groove suitable for accommodating a straight arch wire is formed along the length direction of the long strip-shaped mold. The top of the wire accommodating groove is open, and the bottom is closed. The cross-sectional shape of the wire accommodating groove matches the cross-sectional shape of the arch wire. The long strip-shaped mold is suitable for being subjected to external force and being bent into an arch shape with several bending parts. The bottom of the long strip-shaped mold is provided with several ejection through holes, and the upper end of the ejection through hole penetrates the bottom of the wire accommodating groove.

2. The high-resilience wire bending and shaping apparatus of claim 1 wherein: The long strip-shaped mold is made of metal.

3. The high-resilience wire bending and shaping apparatus of claim 1 wherein: The long strip-shaped mold is made by metal powder injection molding or machining on a metal material.

4. The high-resilience wire bending and shaping apparatus of claim 1 wherein: The cross-sectional shape of the wire accommodating groove is any one of a circle, a square, an ellipse, a horseshoe shape, a polygon, or a special shape.

5. The high-resilience wire bending and shaping apparatus of claim 1 wherein: The cross-sectional shape of the wire accommodating groove is a square, and the cross-sectional shape of the long strip-shaped mold is a U shape.

6. The high-resilience wire bending and shaping apparatus of claim 5 wherein: The long strip-shaped mold is straight, and a wire accommodating groove suitable for accommodating a straight arch wire is formed along the length direction of the long strip-shaped mold. The top of the wire accommodating groove is open, and the bottom is closed. The cross-sectional shape of the wire accommodating groove matches the cross-sectional shape of the arch wire. The long strip-shaped mold is suitable for being subjected to external force and being bent into an arch shape with several bending parts.

7. A bending and setting process of a high-resilience archwire, which is performed using the bending and setting device of the high-resilience archwire according to any one of claims 1 to 6, characterized in that, The bottom of the long strip-shaped mold is provided with several ejection through holes, and the upper end of the ejection through hole penetrates the bottom of the wire accommodating groove. The long strip-shaped mold is made of metal. The long strip-shaped mold is made by metal powder injection molding or machining on a metal material. The cross-sectional shape of the wire accommodating groove is any one of a circle, a square, an ellipse, a horseshoe shape, a polygon, or a special shape. The cross-sectional shape of the wire accommodating groove is a square, and the cross-sectional shape of the long strip-shaped mold is a U shape. The long strip-shaped mold is straight, and a wire accommodating groove suitable for accommodating a straight arch wire is formed along the length direction of the long strip-shaped mold. The top of the wire accommodating groove is open, and the bottom is closed. The cross-sectional shape of the wire accommodating groove matches the cross-sectional shape of the arch wire. The long strip-shaped mold is suitable for being subjected to external force and being bent into an arch shape with several bending parts.

8. The process of claim 7 wherein the high-resilience archwire is formed by the process of: The bottom of the long strip-shaped mold is provided with several ejection through holes, and the upper end of the ejection through hole penetrates the bottom of the wire accommodating groove.

9. The process of claim 7 wherein the high-resilience archwire is formed by the process of: The long strip-shaped mold is made of metal. The long strip-shaped mold is made by metal powder injection molding or machining on a metal material. The cross-sectional shape of the wire accommodating groove is any one of a circle, a square, an ellipse, a horseshoe shape, a polygon, or a special shape. The cross-sectional shape of the wire accommodating groove is a square, and the cross-sectional shape of the long strip-shaped mold is a U shape.

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