A rotary archwire bending device

Abstract

The present invention discloses a rotary archwire bending device, comprising: a base; a limiting mechanism provided with an archwire through hole for the archwire to pass through movably; a rotating mechanism, including: a rotation driving source, a rotating shaft and an eccentric bending head; the rotating mechanism is movably arranged on the base in the front-back direction; the rotation driving source is connected to the rotating shaft and used for driving the rotating shaft to rotate; the eccentric bending head is fixed at an eccentric position on the end face of the rotating shaft; the eccentric bending head is located at the archwire extending end of the archwire through hole; a first linear driving mechanism; the first linear driving mechanism is connected to the rotating mechanism and used for driving the rotating mechanism to move back and forth, so that the eccentric bending head enters or exits above or below the archwire. The present invention solves the problem of low efficiency in the existing manual bending method in orthodontic treatment. The present invention realizes automatic bending of the archwire, greatly improves the production efficiency of archwire bending, and improves the accuracy of archwire bending.

Description

Technical Field

[0001] The present invention relates to the field of orthodontics, and particularly to a rotary arch wire bending device. Background Art

[0002] Malocclusion is a common oral disease, mainly manifested as irregular tooth arrangement, abnormal dental arch relationship between the upper and lower dental arches, and abnormal size, shape and position of the jawbone. Fixed orthodontic technology is a common and effective method for orthodontic treatment at present. Fixed orthodontic technology is mainly realized by brackets and orthodontic arch wires. The brackets are bonded to the tooth surface, and continuous bioforces are generated through the shape memory function of the deformed arch wire, so that the teeth move towards flatness and normal occlusion is restored. During orthodontic treatment, especially lingual fixed correction, arch wires with different angles often need to be bent and placed into lingual inclined groove brackets. In the treatment process, the brackets and the arch wires generally adopt full-size matching, so the accuracy requirements for the bracket grooves and the arch wires are very high. Moreover, personalized arch wires are completely designed according to the lingual position of the patient's teeth, and are generally tortuous and diverse. It is quite difficult to bend the original straight arch wire raw material into a special, tortuous and precise personalized arch wire.

[0003] At present, personalized arch wires are generally bent manually. However, manual bending of arch wires is very difficult, requires high skills for technicians, and takes a long time for bending, which is not suitable for large-scale production. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a rotary arch wire bending device, which can accurately and quickly realize the automatic bending of arch wires.

[0005] The present invention is realized through the following technical solutions:

[0006] A rotary arch wire bending device includes: a base; a limiting mechanism; the limiting mechanism is fixedly arranged on the base, and an arch wire perforation for the arch wire to pass through movably is opened on the limiting mechanism; a rotating mechanism, including: a rotation driving source, a rotating shaft and an eccentric bending head; the rotating mechanism is movably arranged on the base back and forth; the rotation driving source is connected to the rotating shaft and is used to drive the rotating shaft to rotate; the eccentric bending head is fixed at an eccentric position on the end face of the rotating shaft; the eccentric bending head is located at the arch wire extending end of the arch wire perforation; a first linear driving mechanism; the first linear driving mechanism is connected to the rotating mechanism and is used to drive the rotating mechanism to move back and forth, so that the eccentric bending head enters or exits above or below the arch wire.

[0007] Furthermore, the rotary arch wire bending device also includes: a feeding mechanism; the feeding mechanism is arranged in the same straight line direction of the arch wire through hole, and the feeding mechanism is provided with a fixing device for fixing one end of the arch wire; the feeding mechanism is movably arranged on the base to the left and right to drive the other end of the arch wire to move left and right in the arch wire through hole of the limiting mechanism.

[0008] Furthermore, the feeding mechanism is provided with an arch wire fixing block and a fixing bolt; the arch wire is passed through the arch wire fixing block; the bolt portion of the fixing bolt is connected to the arch wire fixing block to compress and fix the arch wire.

[0009] Furthermore, the rotary arch wire bending device also includes: a second linear drive mechanism; the second linear drive mechanism is arranged on the base, and the second linear drive mechanism and the first linear drive mechanism are in a vertical relationship on the plane of the base; the second linear drive mechanism is connected to the feeding mechanism and is used to drive the feeding mechanism to move left and right.

[0010] Furthermore, the first linear drive mechanism includes: an X-axis motor, an X-axis screw and an X-axis screw slider; the X-axis motor is transmission-connected to the X-axis screw, the X-axis screw slider is arranged on the X-axis screw, and the rotating mechanism is fixedly connected to the X-axis screw slider.

[0011] Furthermore, the rotating mechanism also includes: a rotating fixed seat and an X-axis guide rail; the rotating drive source and the rotating axis are both fixed on the rotating fixed seat, and the rotating fixed seat is also fixed on the slider of the X-axis guide rail and the X-axis lead screw slider.

[0012] Furthermore, the rotating mechanism also includes a rotating shaft mounting block; the rotating shaft mounting block is fixed on the rotating fixing seat, and the rotating shaft is fixedly mounted in the rotating shaft mounting block.

[0013] Furthermore, the second linear drive mechanism includes: a Y-axis motor, a Y-axis screw and a Y-axis screw slider; the Y-axis motor is transmission-connected to the Y-axis screw, the Y-axis screw slider is arranged on the Y-axis screw, and the feed mechanism is fixedly connected to the Y-axis screw slider.

[0014] Furthermore, the feeding mechanism also includes a feeding fixed block; the feeding fixed block is fixedly connected to the Y-axis lead screw slider.

[0015] Furthermore, the rotation driving source is a rotary motor or a rotary cylinder.

[0016] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0017] The straight arch wire to be processed is movably threaded through the limiting mechanism, with one end protruding; the first linear drive mechanism can drive the rotating mechanism to move forward and backward, so that the eccentric bending head enters above or below the arch wire; the rotation drive source drives the rotating shaft to rotate, and the eccentric bending head applies a force to the arch wire, causing a curved structure for orthodontic treatment to be bent on the arch wire. When processing multiple curved structures, the first linear drive mechanism drives the rotating mechanism to withdraw above or below the arch wire, then advances the arch wire forward a small distance, and then the first linear drive mechanism drives the rotating mechanism to enter above or below the arch wire again. Continuing to drive the eccentric bending head to rotate in this way, the next curved structure is bent on the arch wire, and so on, until enough curved structures are bent on the arch wire to obtain a personalized orthodontic arch wire that meets the patient's needs.

[0018] The present invention solves the problem of low efficiency in the existing manual bending method in oral orthodontic treatment. The present invention realizes the automatic bending of the arch wire, greatly improves the production efficiency of arch wire bending, and improves the accuracy of arch wire bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The following shows a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 The following shows another three-dimensional schematic diagram of the present invention;

[0021] Figure 3 The following shows a three-dimensional schematic diagram of the present invention showing the internal structure of the rotating mechanism;

[0022] Figure 4 The following shows a schematic diagram of the cooperation between the first linear drive mechanism and the rotating mechanism;

[0023] Figure 5 The following shows a schematic diagram of the cooperation between the second linear drive mechanism and the feeding mechanism;

[0024] Figure 6 The following shows a schematic diagram of the internal structure of the rotating mechanism;

[0025] Figure 7 The following shows Figure 6 A partial enlarged view of part A in

[0026] Figure 8 The following shows Figure 6 The front view of

[0027] In the figure: 10, base; 20, limiting mechanism; 30, rotating mechanism; 31, rotating motor; 32, rotating shaft; 33, eccentric elbow; 34, rotating fixed seat; 35, X-axis guide rail; 36, rotating shaft mounting block; 40, first linear driving mechanism; 41, X-axis motor; 42, X-axis lead screw; 43, X-axis lead screw slider; 50, feeding mechanism; 51, arch wire fixing block; 52, fixing bolt; 53, feeding fixed block; 60, second linear driving mechanism; 61, Y-axis motor; 62, Y-axis lead screw; 63, Y-axis lead screw slider; 70, arch wire. Detailed implementation manners

[0028] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The present invention discloses a rotary arch wire bending device for bending a straight arch wire 70 into a plurality of curved structures to formulate a personalized orthodontic arch wire that meets the needs of patients.

[0033] Refer toFigures 1-4 , this rotary archwire bending device includes: a base 10, a limiting mechanism 20, a rotating mechanism 30, and a first linear driving mechanism 40. Among them, the limiting mechanism 20 is fixedly arranged on the base 10. A perforation for the archwire 70 is provided on the limiting mechanism 20. The straight archwire 70 to be processed is movably threaded through the perforation for the archwire 70, and one end extends out. The extending end is to be bent by the rotating mechanism 30. Refer to Figures 6-8 , the rotating mechanism 30 includes a rotation driving source, a rotating shaft 32, and an eccentric bending head 33; the rotation driving source can be a rotary motor 31 or a rotary cylinder, and is preferably a rotary motor 31 in this embodiment; the rotary motor 31 is connected to the rotating shaft 32 and drives the rotating shaft 32 to rotate. The eccentric bending head 33 is fixed at an eccentric position on the end face of the rotating shaft 32. The eccentric bending head 33 is located at the extending end of the archwire 70 of the perforation for the archwire 70. Therefore, when the rotary motor 31 drives, the rotating shaft 32 rotates, and the eccentric bending head 33 performs eccentric rotation, contacts the archwire 70 and applies a force to the archwire 70, thereby realizing the bending process of the archwire 70. The first linear driving mechanism 40 is connected to the rotating mechanism 30 and is used to drive the rotating mechanism 30 to move back and forth, thereby driving the eccentric bending head 33 to enter or exit above or below the archwire 70.

[0034] The working principle of the present invention lies in: Refer to Figures 6-8, the straight arch wire 70 to be processed is movably threaded through the limiting mechanism 20, with one end protruding, waiting to be bent by rotating the eccentric shaft. The first linear drive mechanism 40 drives the rotating mechanism 30 to move back and forth, so that the eccentric bending head 33 enters above or below the arch wire 70, specifically depending on the bending direction of the curved structure. For example, after the eccentric bending head 33 enters above the arch wire 70 and rotates clockwise, the arch wire 70 is bent downward, and the degree of bending depends on the stroke of the eccentric bending head 33; another example is that after the eccentric bending head 33 enters below the arch wire 70 and rotates counterclockwise, the arch wire 70 is bent upward, and the degree of bending depends on the stroke of the eccentric bending head 33; thus, it is easy to understand that when processing multiple curved structures, the eccentric bending head 33 can switch to enter above or below the arch wire 70 to achieve commutation; whether commutation is required depends on the angle size of the arch wire 70 being bent, so as to determine whether the bending head is above or below the arch wire 70. Usually, multiple curved structures need to be processed on the arch wire 70. When the next curved structure needs to be processed, first drive the eccentric bending head 33 to withdraw through the first linear drive mechanism 40, feed the arch wire 70 forward a small section. The feeding of the arch wire 70 can be achieved manually or mechanically. The first linear drive mechanism 40 drives the eccentric bending head 33 to re-enter above or below the arch wire 70, drives the eccentric bending head 33 to rotate, and bends the next curved structure on the arch wire 70. And so on, until enough curved structures are bent on the arch wire 70, and each curved structure on the arch wire 70 fits the actual tooth condition of the patient, obtaining a personalized orthodontic arch wire 70 that meets the patient's needs.

[0035] Preferably, the present invention further includes a feeding mechanism 50. Refer to Figure 5 , the feeding mechanism 50 is arranged in the same straight line direction as the perforation of the arch wire 70, and a fixing device for fixing one end of the arch wire 70 is provided on the feeding mechanism 50. The feeding device is movably arranged left and right on the base 10. Therefore, when the feeding device moves left and right, it can drive the other end of the arch wire 70, that is, the movable end located in the limiting mechanism 20, to move left and right in the perforation of the arch wire 70, thereby realizing the feeding of the arch wire 70. The feeding amount depends on the size of the curved structure and the spacing between the curved structures.

[0036] Preferably, an arch wire fixing block 51 and a fixing bolt 52 are provided on the feeding mechanism 50. The arch wire 70 is threaded through the arch wire fixing block 51. A threaded hole is opened at the top of the arch wire fixing block 51, and the bolt part of the fixing bolt 52 is connected to the threaded hole. By tightening the fixing bolt 52, the arch wire 70 can be pressed downward.

[0037] Preferably, the feeding of the arch wire 70 is realized by mechanical means. In order to drive the feeding mechanism 50 to move left and right and accurately control the feeding amount, the present invention further includes a second linear drive mechanism 60. Refer to Figure 3 and Figure 5, a second linear drive mechanism 60 is provided on the base 10. The second linear drive mechanism 60 and the first linear drive mechanism 40 are perpendicular to each other on the plane of the base 10. Specifically, the first linear drive mechanism 40 is arranged along the front-back direction of the base 10, and the second linear drive mechanism 60 is arranged along the left-right direction of the base 10. The second linear drive mechanism 60 is connected to the feeding mechanism 50 and is used to drive the feeding mechanism 50 to move left and right, so as to realize the automatic feeding of the arch wire 70.

[0038] Refer to Figure 2 , in order to make the layout on the upper surface of the base 10 more concise and make the layout of the driving part less likely to affect the operation space for loading and bending the arch wire 70, both the first linear drive mechanism 40 and the second linear drive mechanism 60 are arranged on the bottom surface of the base 10. Correspondingly, the base 10 is provided with a through groove to facilitate the connection of the linear mechanism to the limiting mechanism 20 and the rotating mechanism 30 from the bottom.

[0039] Preferably, refer to Figure 4 , the first linear drive mechanism 40 specifically includes: an X-axis motor 41, an X-axis lead screw 42, and an X-axis lead screw slider 43. The X-axis motor 41 is in transmission connection with the X-axis lead screw 42. The X-axis lead screw slider 43 is arranged on the X-axis lead screw 42. The rotating mechanism 30 is fixedly connected to the X-axis lead screw slider 43. The X-axis motor 41 drives the rotating mechanism 30 to move along the X-axis direction, so that the eccentric bending head 33 enters or exits above or below the arch wire 70.

[0040] Preferably, refer to Figure 6 , the rotating mechanism 30 further includes a rotating fixed seat 34 and an X-axis guide rail 35. The rotating motor 31 and the rotating shaft 32 are both fixed on the rotating fixed seat 34. The rotating fixed seat 34 is simultaneously fixed to the slider of the X-axis guide rail 35 and the X-axis lead screw slider 43. When the X-axis motor 41 drives, the X-axis lead screw slider 43 drives the rotating fixed seat 34 to slide back and forth along the X-axis guide rail 35.

[0041] Preferably, the rotating mechanism 30 further includes a rotating shaft mounting block 36. The rotating shaft mounting block 36 is fixedly installed on the rotating fixed seat 34. The rotating shaft 32 is installed in the rotating shaft mounting block 36 through two front and rear bearings. The rotating shaft mounting block 36 provides stable support for the rotating shaft 32.

[0042] Preferably, refer to Figure 5, the second linear drive mechanism 60 specifically includes: a Y-axis motor 61, a Y-axis lead screw 62, and a Y-axis lead screw slider 63. The Y-axis motor 61 is drivingly connected to the Y-axis lead screw 62. The Y-axis lead screw slider 63 is disposed on the Y-axis lead screw 62, and the feeding mechanism 50 is fixedly connected to the Y-axis lead screw slider 63. Further preferably, the feeding mechanism 50 further includes a feeding fixing block 53, and the feeding fixing block 53 is fixedly connected to the Y-axis lead screw slider 63. When the Y-axis motor 61 is driven, the Y-axis lead screw slider 63 drives the feeding mechanism 50 to move left and right by driving the feeding fixing block 53, so as to realize the feeding of the arch wire 70.

[0043] Preferably, the rotary drive source is a rotary motor 31 or a rotary cylinder, and other existing linear drive devices in the field can also be used.

[0044] The present invention solves the problem of low efficiency in the existing manual bending method in orthodontic treatment. The present invention realizes the automatic bending of the arch wire 70, greatly improves the production efficiency of bending the arch wire 70, and improves the accuracy of bending the arch wire 70.

[0045] The above embodiments are only the preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A rotary archwire bending device, characterized in that, Comprising: Base; Limiting mechanism; The limiting mechanism is fixedly arranged on the base, and a wire through hole for the arch wire to movably pass through is formed in the limiting mechanism; Rotating mechanism, including: a rotation driving source, a rotating shaft and an eccentric bending head; the rotating mechanism is movably arranged on the base in the front-back direction; the rotation driving source is connected to the rotating shaft and is used to drive the rotating shaft to rotate; the eccentric bending head is fixed at an eccentric position on the end face of the rotating shaft; the eccentric bending head is located at the wire extending end of the wire through hole; First linear driving mechanism; the first linear driving mechanism is connected to the rotating mechanism and is used to drive the rotating mechanism to move back and forth, so that the eccentric bending head enters or exits above or below the arch wire; The rotary arch wire bending device further includes: a feeding mechanism; the feeding mechanism is arranged in the same straight line direction as the wire through hole, and a fixing device for fixing one end of the arch wire is arranged on the feeding mechanism; the feeding mechanism is movably arranged on the base in the left-right direction to drive the other end of the arch wire to move left and right in the wire through hole of the limiting mechanism; Second linear driving mechanism; the second linear driving mechanism is arranged on the base, and the second linear driving mechanism and the first linear driving mechanism are perpendicular to each other on the base plane; the second linear driving mechanism is connected to the feeding mechanism and is used to drive the feeding mechanism to move left and right; A wire fixing block and a fixing bolt are arranged on the feeding mechanism; the arch wire passes through the wire fixing block; the bolt part of the fixing bolt is connected in the wire fixing block to be used for pressing and fixing the arch wire.

2. The rotary archwire bending device according to claim 1, wherein The first linear driving mechanism includes: an X-axis motor, an X-axis lead screw and an X-axis lead screw slider; the X-axis motor is in transmission connection with the X-axis lead screw, the X-axis lead screw slider is arranged on the X-axis lead screw, and the rotating mechanism is fixedly connected to the X-axis lead screw slider.

3. The rotary archwire bending device according to claim 2, characterized in that, The rotating mechanism further includes: a rotating fixing seat and an X-axis guide rail; the rotation driving source and the rotating shaft are both fixed on the rotating fixing seat, and the rotating fixing seat is simultaneously fixed on the slider of the X-axis guide rail and the X-axis lead screw slider.

4. The rotary archwire bending device according to claim 3, characterized in that, The rotating mechanism further includes a rotating shaft mounting block; the rotating shaft mounting block is fixed on the rotating fixing seat, and the rotating shaft is fixedly installed in the rotating shaft mounting block.

5. The rotary archwire bending device according to claim 1, characterized in that, The second linear driving mechanism includes: a Y-axis motor, a Y-axis lead screw and a Y-axis lead screw slider; the Y-axis motor is in transmission connection with the Y-axis lead screw, the Y-axis lead screw slider is arranged on the Y-axis lead screw, and the feeding mechanism is fixedly connected to the Y-axis lead screw slider.

6. The rotary archwire bending device according to claim 5, wherein, The feeding mechanism further includes a feeding fixing block; the feeding fixing block is fixedly connected to the Y-axis lead screw slider.

7. The rotary archwire bending device according to claim 1, characterized in that, The rotation driving source is a rotation motor or a rotation cylinder.

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