Dental wire bending device
By designing a dental wire bending device, a multi-stage stepped surface and bearing structure are used to achieve bending of wires with multiple arcs and shapes, solving the problems of high cost and complex operation of existing equipment, and making it suitable for small and medium-sized clinics and teaching scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN POLYTECHNIC
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-21
AI Technical Summary
Existing dental metal wire bending equipment is costly, complex to operate, and has low precision, making it difficult to meet the needs of small and medium-sized clinics and teaching settings.
A dental wire bending device has been designed, including a base, a movable pressure block, a locking component and a central cylinder. It can achieve bending of wires with multiple arcs and shapes through multi-stage stepped surfaces and bearing structures, supports multiple bending operations, reduces equipment costs and improves ease of operation.
It achieves flexibility in bending steel wires with multiple arcs and shapes, reduces production costs, and improves ease of operation and safety, making it suitable for small and medium-sized clinics and teaching settings.
Smart Images
Figure CN224525856U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dental instrument technology, and in particular to a dental wire bending device. Background Technology
[0002] With the continued growth in demand for orthodontic treatment and removable partial dentures, the bending and processing technology of dental metal wires has received increasing attention. The processing precision of dental metal restorations (such as orthodontic archwires and removable partial denture frameworks) directly affects treatment outcomes and patient comfort, and is one of the core aspects of dental clinical practice and denture fabrication.
[0003] Currently, automated bending machine technology has emerged in the field of dental metal processing. Through the coordinated operation of data acquisition and machining, it has achieved automation in the processing of prostheses: with the help of computer to precisely control the bending angle, radius and position, it significantly improves the processing accuracy and consistency and effectively avoids manual operation errors; at the same time, it supports batch replication and high-speed continuous production, reduces the dependence on technician experience, and can be seamlessly connected and remotely collaborated through design software to form a closed-loop process of "design-production", which has been applied to some extent in large-scale denture processing plants.
[0004] However, existing automated bending machine technology has significant limitations and cannot cover all scenarios: First, the equipment cost is high, with mid-to-high-end models costing between 350,000 and 1,050,000 RMB each, and requiring 3D scanners, professional design software, and post-processing equipment, resulting in a very high overall investment threshold; Second, maintenance costs are ongoing, with precision components such as bending heads and guide rails requiring regular maintenance every six months, costing 500 to 2,000 RMB per maintenance, increasing the long-term burden; Third, the technical threshold is high, requiring operators to master CAD / CAM technology and receive continuous training as AI algorithms are updated, limiting its application in small and medium-sized institutions; Fourth, there is a standardized design trap, with over-reliance on preset programs leading to homogenized prosthesis designs, making it difficult to adapt to patients' specific anatomical needs, and requiring manual adjustments on-site later, partially offsetting the efficiency advantages of automation.
[0005] While traditional manual bending of steel wire can avoid equipment costs to some extent, as it requires no supporting equipment or maintenance, it demands extremely high skill levels from technicians and suffers from low operating efficiency, poor precision (angle and position errors are difficult to control), high labor intensity for operators' hands, and a high risk of occupational injury. Therefore, it cannot meet the needs of large-scale, high-precision processing.
[0006] In summary, the core contradiction currently facing the field of dental metal wire bending is that traditional manual methods are inefficient and lack precision, while existing automated equipment is costly, has high barriers to entry, and is limited in application scenarios, making it difficult to meet the needs of small and medium-sized clinics, small denture processing plants, and medical colleges. Utility Model Content
[0007] To address the aforementioned technical problems, this utility model discloses a dental wire bending device that can bend the wire into multi-arc shapes and can be bent multiple times. It is easy to operate and has low device cost.
[0008] The technical solution of this utility model is as follows:
[0009] A dental wire bending device includes a base, a movable pressure block, a locking component, and a central cylinder. The locking component and the central cylinder are fixedly installed on the base. The central cylinder is located in the middle of the base. The locking component includes a reference positioning surface for horizontally limiting the wire. The reference positioning surface faces the central cylinder.
[0010] A rotation limiting component is provided on the outer side of the bottom of the central cylinder, and the bottom of the movable pressure block is connected to the rotation limiting component;
[0011] The side of the central cylinder is a multi-step surface with different diameters. The surface shape of the movable pressure block matches the surface shape of the multi-step surface, and a gap channel is formed between the movable pressure block and the multi-step surface. The reference positioning surface is a multi-step positioning surface with the same steps as the multi-step surface.
[0012] The movable pressure block rotates around the pivot point of the central stepped cylinder, forcing the steel wire to adhere to the side of the central cylinder during the rotation, thus forming a bent shape.
[0013] When bending the steel wire, one end of the steel wire is placed against the reference positioning surface, and the other end of the steel wire passes through the gap channel between the movable pressure block and the central cylinder. The movable pressure block is rotated, and under the action of the rotation limiting component, the movable pressure block rotates around the central cylinder, so that the steel wire is attached to the side of the central cylinder to form a bending angle.
[0014] Previously, steel wire could only be bent into a single shape and a single arc. With this technology, steel wire can be bent into multiple arcs and shapes, which is convenient to use and allows for multiple bending of the steel wire without disassembly and readjustment.
[0015] As a further improvement of this utility model, the rotation limiting component includes a bearing, and the movable pressure block is fixedly connected to the outer ring of the bearing.
[0016] As a further improvement of this utility model, the outer ring of the bearing is fixedly connected to the movable pressure block by a locating pin.
[0017] As a further improvement of this utility model, the bearing is a deep groove ball bearing, and the inner ring of the bearing fits with the bottom of the central cylinder.
[0018] As a further improvement of this utility model, the base is provided with a travel limiting groove on the outside of the central cylinder, and the bottom of the movable pressure block is embedded in the travel limiting groove.
[0019] As a further improvement of this utility model, the movable pressure block is provided with a handle. Furthermore, the handle is cylindrical. The cylindrical handle design conforms to the natural grip posture of the hand, and combined with the lever-driven bending method, it can effectively avoid the risk of scratches caused by hard contact between the hand and the steel wire or equipment during bending, thus improving operational safety and comfort.
[0020] As a further improvement of this utility model, the locking mechanism is provided with a stop edge, and one end of the steel wire abuts against the stop edge to achieve the horizontal positioning of the steel wire and form an initial straight segment.
[0021] As a further improvement of this utility model, the width of the gap channel is the wire diameter + 0.5 to 1.2 mm.
[0022] As a further improvement of this utility model, the movable pressure block is provided with a clamping block for clamping the non-deformation zone of the steel wire before rotation.
[0023] As a further improvement to this utility model, a tapered pin and a ceramic bushing are included. The ceramic bushing is fitted onto the central cylinder and fixed by the tapered pin. This technical solution can eliminate the gaps caused by the cumulative tolerances of multiple tolerance levels, thus improving repeatability.
[0024] As a further improvement of this utility model, the surfaces of the movable pressure block and the central cylinder are inlaid with wear-resistant copper sleeves to prevent the steel wire from scratching the mold.
[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0026] First, it offers high bending flexibility and adapts to diverse needs: This device can precisely bend the steel wire into any arc and various shapes according to actual treatment or processing requirements, breaking through the limitation of a single shape; it also supports multiple continuous bending of the steel wire, and can complete complex shape processing without disassembling or readjusting the equipment, effectively improving the continuity and adaptability of bending operations, especially adapting to the morphological needs of patients' personalized prostheses.
[0027] Secondly, the device features a streamlined structure, outstanding economy and portability: its compact overall shape and simple structure reduce production and manufacturing costs, resulting in significant low-cost characteristics; at the same time, it is easy to disassemble and assemble, lightweight, and easy to carry to different scenarios (such as clinic clinical sites, laboratory teaching, etc.), improving the device's scenario adaptability.
[0028] Third, it is easy and labor-saving to operate, and lowers the threshold for use: The device adopts an optimized operation design, and the overall operation process is simple and intuitive. It can be quickly mastered without professional technical training, which is especially beneficial for beginners to master the wire bending skills; the lever structure realizes labor-saving operation, reduces the physical exertion of operators, and solves the problem of laborious traditional manual bending.
[0029] In summary, this utility model, through optimized structural and operational design, ensures bending accuracy while also taking into account flexibility, economy, ease of use, and safety. It effectively solves the problems of high cost and complex operation of existing equipment, as well as low efficiency and high risk of traditional manual bending. It is suitable for widespread application in small and medium-sized clinics, dental prosthesis processing plants, and teaching settings. Attached Figure Description
[0030] Fig. 1 This is a schematic diagram of the structure of a dental wire bending device according to an embodiment of the present invention.
[0031] Fig. 2 This is a schematic diagram of the structure of the movable pressure block rotating in an embodiment of this utility model.
[0032] Fig. 3 This is a schematic cross-sectional view of a dental wire bending device according to an embodiment of the present invention.
[0033] The reference numerals in the figures include:
[0034] 1-Base, 2-Modible pressure block, 3-Locking component, 4-Central cylinder, 5-Handle, 6-Bearing, 7-Stroke limit groove, 8-Side stop. Detailed Implementation
[0035] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0036] like Figs. 1-3 As shown, a dental wire bending device includes a base 1, a movable pressure block 2, a locking component 3, and a central cylinder 4. The locking component 3 and the central cylinder 4 are fixedly installed on the base 1. The central cylinder 4 is located in the middle of the base 1. The locking component 3 includes a reference positioning surface for horizontally limiting the wire, and the reference positioning surface faces the central cylinder 4. A bearing 6 is provided on the outer side of the bottom of the central cylinder 4, and the bottom of the movable pressure block 2 is fixedly connected to the outer ring of the bearing 6.
[0037] The side surface of the central cylinder 4 is a multi-step surface, and the surface shape of the movable pressure block 2 matches the surface shape of the multi-step surface, forming a gap channel between the movable pressure block 2 and the multi-step surface; the reference positioning surface is a multi-step positioning surface with the same steps as the multi-step surface and with an interlocking shape. Furthermore, the gaps in the gap channels from top to bottom are the same.
[0038] Furthermore, the outer ring of the bearing 6 is fixedly connected to the movable pressure block 2 via a locating pin. Furthermore, the gap between the movable pressure block 2 and the central cylinder 4 can be finely adjusted by adjusting the positions of the movable pressure block 2 and the locating pin.
[0039] The base 1 has a travel limiting groove 7 on the outer side of the central cylinder 4, and the bottom of the movable pressure block 2 is embedded in the travel limiting groove 7. The movable pressure block 2 has a cylindrical handle 5.
[0040] The width of the gap channel is the wire diameter + 0.3 to 0.7 mm.
[0041] Furthermore, the locking mechanism is provided with a stop 8, and one end of the steel wire abuts against the stop 8 to achieve horizontal positioning of the steel wire and form an initial straight segment.
[0042] Furthermore, the bearing 6 is a deep groove ball bearing 6, and the inner ring of the bearing 6 is interference-fitted with the bottom of the central cylinder 4.
[0043] Furthermore, the central cylinder 4 is fixed to the base 1 by screws.
[0044] In this embodiment, when bending the steel wire, one end of the wire is placed against the reference positioning surface to ensure positioning accuracy, while the other end of the wire passes through the gap channel between the movable pressure block 2 and the central cylinder 4. Horizontally, the wire is limited by the locking member 3, and the end of the wire abuts against the stop edge 8 of the locking member 3, forming an initial straight segment. The movable pressure block 2 is rotated around the central cylinder 4, causing the wire to adhere to the side of the central cylinder 4. The rotation angle is manually controlled, thus forming a bending angle for the wire. During rotation, the movable pressure block 2 forces the wire to adhere to the side of the central cylinder 4, forming a precise angle, and can be bent to the desired arc size and shape, not limited to a single shape.
[0045] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model 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 utility model.
[0046] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0048] The specific embodiments described above are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes, but is not limited to, these specific embodiments. All equivalent changes made in accordance with the shape and structure of this utility model are within the protection scope of this utility model.
Claims
1. A dental wire bending device, characterized in that: It includes a base, a movable pressure block, a locking component, and a central cylinder. The locking component and the central cylinder are fixedly installed on the base. The central cylinder is located in the middle of the base. The locking component includes a reference positioning surface for horizontally limiting the steel wire. The reference positioning surface faces the central cylinder. A rotation limiting component is provided on the outer side of the bottom of the central cylinder, and the bottom of the movable pressure block is connected to the rotation limiting component; The side of the central cylinder is a multi-step surface, and the surface shape of the movable pressure block matches the surface shape of the multi-step surface, forming a gap channel between the movable pressure block and the multi-step surface; the reference positioning surface is a multi-step positioning surface; The movable pressure block rotates around the pivot point of the central cylinder, forcing the steel wire to adhere to the side of the central cylinder during the rotation, thus forming a bent shape.
2. The dental wire bending device according to claim 1, characterized in that: The rotation limiting component includes a bearing, and the movable pressure block is fixedly connected to the outer ring of the bearing.
3. The dental wire bending device according to claim 2, characterized in that: The outer ring of the bearing is fixedly connected to the movable pressure block by a locating pin.
4. The dental wire bending device according to claim 3, characterized in that: The bearing is a deep groove ball bearing, and the inner ring of the bearing fits with the bottom of the central cylinder.
5. The dental wire bending device according to claim 1, characterized in that: The base has a travel limiting groove on the outside of the central cylinder, and the bottom of the movable pressure block is embedded in the travel limiting groove.
6. The dental wire bending device according to claim 1, characterized in that: The movable pressure block is equipped with a cylindrical handle.
7. The dental wire bending device according to claim 1, characterized in that: The locking member is provided with a stop, and one end of the steel wire abuts against the stop to achieve horizontal positioning of the steel wire and form an initial straight segment.
8. The dental wire bending device according to any one of claims 1 to 7, characterized in that: The width of the gap channel is the wire diameter + 0.5~1.2mm.
9. The dental wire bending device according to any one of claims 1 to 7, characterized in that: The movable pressure block is equipped with a clamping block for holding the non-deformable zone of the steel wire before rotation.
10. The dental wire bending device according to any one of claims 1 to 7, characterized in that: It includes a tapered pin and a ceramic bushing, the ceramic bushing being fitted over the central cylinder and secured by the tapered pin.