Automatic clamping device for orthodontic arch wire and free traction hook

Abstract

The present application discloses an automatic clamping device for orthodontic arch wire and free traction hook, which is used for clamping the arch wire and the traction hook, and includes a bearing unit, a grinding unit and an assembly unit; the bearing unit is used to bear the arch wire so that the arch wire remains in a suspended state to be clamped; the grinding unit includes a fixing part and a grinding part, the fixing part is used to position both sides of the clamping part of the arch wire and the traction hook, and the grinding part is used to grind the surface of the arch wire at the clamping part to increase the roughness of the arch wire surface; the assembly unit includes a carrying part and an assembly part, the carrying part is used to load the traction hook and transport it to the clamping part, and the assembly part is used to apply force and pressure to the traction hook so that the traction hook and the arch wire are connected and fixed.

Description

Technical Field

[0001] The invention belongs to the field of dental orthodontic instruments, and in particular relates to an automatic clamping device for an orthodontic arch wire and a free traction hook. Background Art

[0002] During the orthodontic process, traction hooks are often used to pull crooked teeth. The doctor will install a free traction hook at the designated position of the archwire according to the degree and direction of the tooth crookedness. The traction hook is provided with an open groove. The archwire is clamped in the groove and then external force is applied to close the groove to achieve the fixation of the traction hook. Currently, pliers are used to clamp the traction hook on the archwire in clinical practice. However, since the surface of the archwire is too smooth, the traction hook is prone to slipping after clamping. Therefore, the doctor needs to use a file to roughen the surface of the archwire where the traction hook is clamped before clamping. The manual grinding process is time-consuming and labor-intensive, and uneven grinding can easily lead to over-grinding. In addition, the pressure required to deform and close the groove of the traction hook during clamping is relatively large, and often requires a doctor with greater strength to hold the pliers with both hands for clamping. A doctor with less strength cannot complete the clamping. Even a doctor with greater strength will feel tired when installing many traction hooks, and excessive force can easily cause the archwire to be excessively deformed or broken. The above problems seriously affect the doctor's work process and need to be solved urgently. Summary of the Invention

[0003] An automatic clamping device for orthodontic arch wire and free traction hook, used for clamping the arch wire and the traction hook, comprising a bearing unit, a grinding unit and an assembly unit;

[0004] The carrying unit is used to carry the arch wire, so that the arch wire remains in a suspended state to be clamped;

[0005] The grinding unit includes a fixing part and a grinding part. The fixing part is used to position the two sides of the arch wire clamping part, and the grinding part is used to grind the surface of the arch wire at the clamping part to increase the roughness of the arch wire surface. Since the grinding part will generate friction with the arch wire during grinding, the fixing part is required to fix it during the grinding process to prevent the arch wire from moving during the grinding process. If the fixing part is not set, the friction position will be inaccurate, and the arch wire may even be separated from the bearing unit, making grinding impossible.

[0006] The assembly unit includes a carrier and an assembly part. The carrier is used to fix the traction hook and transport it to the clamping position. The assembly part is used to apply force to the traction hook to clamp the arch wire so that the traction hook and the arch wire are connected and fixed.

[0007] Furthermore, the fixing member includes at least one fixing clip, which is used to clamp the two sides of the arch wire corresponding to the clamping position; preferably, two fixing clips are provided, and the two fixing clips are respectively clamped on the two sides of the arch wire corresponding to the clamping position.

[0008] Furthermore, the fixing clamp is provided with an anti-slip member, which interacts with the surface of the arch wire to prevent the position of the arch wire from changing during grinding.

[0009] The grinding part includes a grinding motor and a grinding wheel connected to its rotating shaft. At least two grinding wheels are arranged along the circumferential direction of the arch wire. The distance between the two grinding wheels is smaller than the diameter of the arch wire. The difference between the distance between the two grinding wheels and the diameter of the arch wire is the grinding amount. Since the grinding wheel is cylindrical, the distance at one end of the two grinding wheels is greater than the distance between the two grinding wheels. During grinding, one end of the grinding wheel contacts the arch wire first, and the grinding wheel gradually moves and grinds until the arch wire is completely between the two grinding wheels.

[0010] Alternatively, the grinding wheel is provided with an adjustment hole to adjust the distance between the two grinding wheels.

[0011] Preferably, the grinding wheels are arranged relative to each other in the horizontal direction, or the grinding wheels are arranged relative to each other in the vertical direction. Preferably, two grinding wheels are provided so that the two opposite surfaces of the arch wire are rubbed, which has a better friction effect than one surface, and is more conducive to the firm fixation of the traction hook;

[0012] Furthermore, the two grinding wheels rotate in opposite directions, so that the grain directions of the two relative surfaces of the arch wire after grinding are opposite. When the traction hook and the arch wire surface are in contact and fixed, two movement trends in opposite directions are generated. The two movement trends restrain each other and it is more difficult for the traction hook to move.

[0013] Alternatively, the grinding wheel is provided with three grinding wheels to rub the surface of the arch wire in three directions along the circumference of the arch wire. However, since the diameter of the arch wire itself is relatively small, the arch wire after friction with three grinding wheels is thinner than that with two grinding wheels, which will reduce its own pressure-bearing capacity. When assembling the traction hook, the arch wire is more likely to break under the action of stress concentration. The grinding wheel can also be replaced with other structures with the same function.

[0014] Alternatively, the grinding piece includes two sandpaper plates arranged opposite to each other, and the hydraulic cylinder drives the sandpaper plates to reciprocate along the two opposite surfaces of the arch wire through the connecting rod, which can also achieve grinding of the arch wire surface.

[0015] Preferably, the anti-slip member may be a non-slip layer with flexible characteristics adhered to the inner surface of the fixing clip, such as a rubber layer, a silicone layer, etc.

[0016] Furthermore, the fixing member further includes a gear set and a gear motor;

[0017] The gear set includes a driving gear and a driven gear meshing with each other, and the fixing clamp includes two clamping jaws, one end of one clamping jaw is connected to the driving gear, and one end of the other clamping jaw is connected to the driven gear;

[0018] The rotating shaft of the gear motor is connected to the driving gear, and the gear motor drives the gear set to rotate to control the opening and closing of the fixing clamp.

[0019] Furthermore, the polishing part and the fixing part are both connected with a telescopic part, which includes a cylinder. The cylinder adopts a high-precision cylinder, such as a micro-motion cylinder. The cylinder is connected to an air pump, which is connected to an air source. The cylinder is provided with a piston, which is connected to a telescopic rod. The other end of the telescopic rod is connected to the polishing part and the fixing part. The air pump fills gas into the cylinder, and the gas pushes the piston to move, so that the telescopic rod drives the polishing part and the fixing part to move.

[0020] Alternatively, the grinding part and the fixing part are both connected to a telescopic part, the telescopic part includes a screw, the screw is a high-precision screw, the screw is connected to a rotating motor, the rotating motor is fixed with a connecting seat, the screw is connected to a sliding sleeve, the connecting seat is provided with a slide rail, the sliding sleeve is connected to the slide rail, and the end of the grinding part / fixing part and the sliding sleeve.

[0021] The provision of a telescopic part can more accurately control the movement of the grinding part and the fixing part toward and away from the arch wire, thereby ensuring grinding accuracy.

[0022] Preferably, during grinding, the telescopic part of the fixing part extends first, and the telescopic part of the grinding part starts to extend after a delay of 0.5s-1s, so that the fixing part starts grinding immediately after fixing the arch wire, thereby improving work efficiency.

[0023] Alternatively, the grinding member and the fixing member may be rotatably arranged, and each of the grinding member and the fixing member is connected to a rotary motor. When in use, the rotary motor rotates the grinding member and / or the fixing member toward the arch wire, so that the fixing member and the grinding member are in contact with the arch wire. When use is finished, the rotary motor drives the grinding member and / or the fixing member away from the arch wire to make room for subsequent processing steps.

[0024] Alternatively, the grinding member and the fixing member are connected to the same connecting seat, and the connecting seat is connected to a rotating motor, which drives the grinding unit to move as a whole;

[0025] Furthermore, the carrier includes a carrier clamp and a transport seat, the traction hook includes a hook portion and a clamping seat, and the carrier clamp is used to clamp the hook portion to keep the traction hook in a vertical posture;

[0026] The transport seat is arranged on a track which is arranged along the direction of the arch wire, so that the carrier loaded with the traction hook moves along the track to the clamping position;

[0027] The transport seat is provided with a floating mechanism, which is connected to the carrier clamp to move the engaging seat of the traction hook to the corresponding position of the arch wire. The floating mechanism is set as a spring or air bag, so that the transport seat can move within the range of 1cm-2cm to enable the traction hook to move. When the traction hook moves to the clamping position, the position of the traction hook is changed by applying pressure to the carrier, so that the engaging seat and the arch wire are engaged.

[0028] Furthermore, the carrying clamp includes a first bidirectional screw, which is connected to a loading motor, which is fixed to the transport seat, and also includes two clamping bodies. The transport seat is provided with a slide groove, and the clamping body can move in the slide groove. The two clamping bodies are respectively connected to the first bidirectional screw, and the loading motor drives the first bidirectional screw to rotate so that the two clamping bodies move relative to each other.

[0029] Preferably, the clamping bodies are respectively provided with fixing grooves that conform to the shape of the hook-shaped portion, and the two clamping bodies cooperate to fix the traction hook in the fixing groove.

[0030] Alternatively, the transport member includes a transport hook, which is connected to the transport seat via a spring. The transport hook is provided with a fixing groove that conforms to the hook-shaped portion. The traction hook is hung on the transport hook. When the transport member transports the traction hook to the rough position of the arch wire, the doctor manually engages the engaging seat of the traction hook with the arch wire. However, the elastic force of the spring should not be too large, as this will affect the engagement between the traction hook and the arch wire.

[0031] Compared with using a transport hook, the clamping process of the transport clamp is more secure and more conducive to fixing the position of the towing hook, while the transport hook is more convenient and flexible to operate.

[0032] Furthermore, the assembly part includes a fixing seat, an assembly clamp and a driving mechanism;

[0033] The fixing seat is arranged on the track and can be moved along the track to the clamping position;

[0034] The assembly clamp is driven by a driving mechanism to open and close, and cooperates with the engaging seat to cause the engaging seat to deform and clamp onto the arch wire.

[0035] Furthermore, the connecting seat, the fixing seat and the transport seat are all arranged on the same track, which makes the error small and the precision high during movement, and makes the processing position of each unit more accurate during processing.

[0036] Furthermore, the driving mechanism includes a second bidirectional screw, which is connected to a clamping motor, the clamping motor and the fixed seat are fixed in position, the second bidirectional screw is connected to the assembly clamp, the fixed seat is provided with a slide, the assembly clamp is fixed to the slide, and the assembly clamp is provided with a clamping module, the clamping module includes a force-applying protrusion and a force-bearing groove, the force-bearing groove and the hook-shaped portion are engaged with each other, the force-applying protrusion and the side of the engaging seat where the hook-shaped portion is not provided are in contact with each other, the clamping motor drives the second bidirectional screw to rotate, and then drives the assembly clamp to slide along the slide and close, and the force-applying protrusion and the force-bearing groove move toward each other to clamp the engaging seat.

[0037] Furthermore, the assembly clamp is configured as a pressure plate and a pressure-bearing plate, and the driving mechanism includes a pressure chamber, a liquid storage tank, and a pump;

[0038] A liquid inlet pipe is connected between the liquid storage tank and the pressure chamber, and the liquid inlet pipe is provided with a pump;

[0039] The pressure chamber is connected to a pressure relief valve, the pressure relief valve is connected to a liquid return pipe, and the other end of the liquid return pipe is connected to a liquid storage tank;

[0040] The pressure chamber is provided with a piston, and the piston and the pressure plate are connected by a rod;

[0041] Liquid is filled into the pressure chamber to gradually increase the pressure in the pressure chamber, thereby pushing the piston to move. The piston transmits force to the pressure plate through the rod. The pressure plate remains stationary on one side of the engaging seat. The pressure plate applies force to the engaging seat, causing the engaging seat to deform and then clamp the arch wire.

[0042] When the pressure in the pressure chamber reaches the pressure relief valve threshold, the pressure relief valve opens and the liquid in the pressure chamber flows back through the return pipe to reduce the pressure in the pressure chamber and ensure that the force applied by the pressure plate to the engaging seat does not exceed the maximum value that the arch wire can withstand.

[0043] Furthermore, the pressure relief valve force threshold is set to Fx, the force exerted by the pressure plate on the traction hook and the arch wire when they are clamped is set to F1, the maximum bearing force of the arch wire is F0, the real-time pressure exerted by the pressure plate on the traction hook is set to Fn, and F1<Fx<F0 is set;

[0044] When Fn<F1, the traction hook and arch wire move toward each other and clamping is performed;

[0045] When F1≤Fn<Fx, the traction hook and the arch wire are relatively fixed and continuously reinforced;

[0046] When Fn=Fx, the pressure relief valve changes from a closed state to an open state, so that Fn never exceeds Fx, and Fn≤Fx<F0.

[0047] Furthermore, the assembly is provided with a pressure sensor, which includes a resistance strain gauge. The resistance strain gauge is provided at the contact portion between the assembly and the towing hook. The pressure sensor displays the magnitude of the pressure on the towing hook.

[0048] The pressure on the traction hook is Fn, the pressure required for the traction hook to complete clamping is F1, the maximum pressure the arch wire can withstand is F0, and the pressure sensor threshold is set to Fx, F1<Fx<F0. Fn will be displayed on the pressure sensor during the clamping process. F1 and F0 can both be obtained through measurement. Fx can be any value between F1 and F0 that is preset. When Fn reaches Fx, the assembly part stops pressurizing.

[0049] Furthermore, the bearing unit includes three evenly distributed support rods, and the arch wire is connected to the support rods to fix the arch wire; the number of support rods can be increased or decreased according to actual conditions, and can also be other supporting structures.

[0050] Furthermore, the carrying unit is provided with an identification piece that conforms to the tooth position setting to simulate the tooth position, so as to make the positioning of the traction hook more accurate.

[0051] The beneficial effects of the present invention are:

[0052] 1. The clamping device of the present invention automatically grinds and clamps the archwire. The operator only needs to fix the traction hook to the carrier and then operate the various units of the device to complete the clamping and fixing of the traction hook. Compared with manual grinding and clamping, this improves clamping efficiency and makes the assembly of the traction hook faster.

[0053] 2. The mechanized grinding method of the present invention is more accurate than manual grinding. The grinding amount of the archwire clamping part can be controlled, and the grinding is more uniform, which avoids the phenomenon of excessive grinding caused by manual grinding and avoids the problem of loosening of the clamping part caused by excessive grinding by manual grinding.

[0054] 3. The present invention adopts mechanized clamping, which solves the problem of insufficient grip strength during manual clamping and reduces the operator's operating threshold. Any doctor can complete the clamping of the traction hook using the device of the present invention, eliminating the requirement for the operator's hand strength.

[0055] 4. The device of the present invention is provided with an element for controlling the clamping force so that the clamping force does not exceed the bearing force of the arch wire, thereby avoiding the problem in the background art of excessive clamping force causing excessive deformation or breakage of the arch wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present application and do not constitute improper limitations on the present invention.

[0057] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0058] Figure 2 This is a schematic structural diagram of a polishing unit according to an embodiment of the present invention;

[0059] Figure 3 Schematic cross-section of a fixing clip according to an embodiment of the present invention;

[0060] Figure 4 This is a schematic diagram of another telescopic member structure according to an embodiment of the present invention;

[0061] Figure 5 This is a schematic structural diagram of a connecting seat according to another embodiment of the present invention;

[0062] Figure 6 This is a schematic diagram of the structure of a carrier according to an embodiment of the present invention;

[0063] Figure 7 This is a cross-sectional schematic diagram of a carrier according to another embodiment of the present invention;

[0064] Figure 8 This is a schematic diagram of the assembly structure of an embodiment of the present invention;

[0065] Figure 9 This is a schematic diagram of the assembly structure of another embodiment of the present invention;

[0066] Figure 10 A schematic diagram of an assembly clamp according to another embodiment of the present invention;

[0067] Figure 11 This is a schematic diagram of the cooperation between the clamping module and the towing hook according to an embodiment of the present invention;

[0068] In the accompanying drawings: 1-carrying unit, 11-support rod, 12-track, 2-grinding unit, 21-fixing member, 211-fixing clamp, 2111-clamping claw, 212-anti-slip member, 213-gear set, 2131-driving gear, 2132-driven gear, 214-gear motor, 22-grinding member, 221-grinding wheel, 222-grinding motor, 23-connecting seat, 24-telescopic member, 241-cylinder, 242-air pump, 243-air source, 244-telescopic rod, 245-screw, 246-rotating motor, 247-sliding sleeve, 248-slide rail, 25-rotating motor, 3-assembly unit, 31-carrying member, 311-carrying clamp, 3111-first bidirectional screw, 3112-loading motor, 3 113-clamping body, 3114-slide, 3115-fixed groove, 312-transport seat, 313-floating mechanism, 314-carrying hook, 32-assembly part, 321-assembly clamp, 3211-pressure plate, 3212-pressure bearing plate, 322-fixed seat, 3221-slide, 323-driving mechanism, 3231-second bidirectional screw, 3232-clamping motor, 3233-pressure chamber, 3234-liquid storage tank, 3235-pump, 3236-liquid inlet pipe, 3237-pressure relief valve, 3238-liquid return pipe, 324-pressure sensor, 3241-resistance strain gauge, 325-clamping module, 3251-force protrusion, 3252-force groove, 4-traction hook, 41-hook-shaped portion, 42-engaging seat. DETAILED DESCRIPTION

[0069] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0070] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0071] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 therefore cannot be understood as a limitation on the present invention.

[0072] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0073] In the present invention, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0074] like Figure 1 As shown, an automatic clamping device for orthodontic arch wire and free traction hook is used to clamp the arch wire and traction hook 4, including a bearing unit 1, a grinding unit 2 and an assembly unit 3;

[0075] The carrying unit 1 is used to carry the arch wire, so that the arch wire remains in a suspended state to be clamped;

[0076] The grinding unit 2 includes a fixing part 21 and a grinding part 22. The fixing part 21 is used to position the two sides of the arch wire clamping part, and the grinding part 22 is used to grind the surface of the arch wire at the clamping part to increase the roughness of the arch wire surface. Since the grinding part 22 will generate friction with the arch wire during grinding, the fixing part 21 is required to fix it during the grinding process to prevent the arch wire from moving during the grinding process. If the fixing part 21 is not provided, the friction position will be inaccurate, and the arch wire may even be separated from the supporting unit 1, making it impossible to grind.

[0077] The assembly unit 3 includes a carrier 31 and an assembly part 32. The carrier 31 is used to fix the traction hook 4 and transport it to the clamping position. The assembly part 32 is used to apply force to the traction hook 4 to clamp the arch wire so that the traction hook 4 and the arch wire are connected and fixed.

[0078] When in use, the doctor marks the position of the arch wire where the traction hook 4 needs to be clamped. This position is the clamping position, and then the arch wire is placed on the supporting structure. The supporting structure supports the arch wire so that it is suspended in the air. First, the grinding unit 2 is moved to the clamping position, and the telescopic member 24 is adjusted to make the fixing member 21 and the grinding member 22 contact the arch wire. Then the fixing member 21 is started to fix the arch wire so that it remains stationary. Then the grinding member 22 starts to grind the surface of the arch wire. After the grinding is rough, the grinding unit 2 is controlled to move away. The arch wire is quickly polished by the grinding unit 2, which saves time and is more uniform than manual grinding, reduces the doctor's workload and improves the doctor's work efficiency. Then the doctor loads the traction hook 4 on the carrier 31, moves the carrier 31 and the assembly part 32 to the clamping position, and the doctor engages the arch wire with the engagement seat 42, starts the assembly part 32, and the assembly part 32 applies force to fix the traction hook 4 on the arch wire.

[0079] In a specific embodiment, the fixing member 21 includes at least one fixing clip 211, and the fixing clip 211 is used to clamp the two sides of the arch wire corresponding to the clamping position; an example, Figure 2 As shown, two fixing clips 211 are provided, and the two fixing clips 211 are respectively clamped on both sides of the corresponding clamping position of the arch wire.

[0080] In one embodiment, the fixing clamp 211 is provided with an anti-slip member 212, which interacts with the surface of the arch wire to prevent the arch wire from changing position during grinding.

[0081] Based on the difference of the grinding piece 22, in one embodiment, as Figure 2 As shown, the grinding member 22 includes a grinding motor 222 and a grinding wheel 221 connected to its rotating shaft. At least two grinding wheels 221 are provided along the circumferential direction of the arch wire. The distance between the two grinding wheels 221 is smaller than the diameter of the arch wire. The difference between the distance between the two grinding wheels 221 and the diameter of the arch wire is the grinding amount. Since the grinding wheels 221 are cylindrical, the distance between one end of the two grinding wheels 221 is larger than the distance between the two grinding wheels 221. During grinding, one end of the grinding wheel 221 first contacts the arch wire, and the grinding wheel 221 gradually moves and grinds until the arch wire is completely located between the two grinding wheels 221.

[0082] In one embodiment, the grinding wheel 221 is provided with an adjustment hole to adjust the distance between the two grinding wheels 221 .

[0083] In one embodiment, the two grinding wheels 221 rotate in opposite directions, so that the grain directions of the two opposite surfaces of the arch wire after grinding are opposite. When the traction hook 4 and the arch wire surface are in contact and fixed, two movement trends in opposite directions are generated. The two movement trends restrain each other and are less likely to cause the traction hook 4 to move.

[0084] In another embodiment, the polishing member 22 includes two sandpaper plates arranged opposite to each other. The hydraulic cylinder is connected to a fixed plate via a connecting rod. The fixed plate is provided with a plurality of fixed slots. The distance between the two sandpaper plates is adjusted by replacing the connected fixed slots. The connecting rod drives the sandpaper plates to reciprocate along the two opposite surfaces of the arch wire to polish the surface of the arch wire.

[0085] In a specific embodiment, Figure 3 As shown, the fixing member 21 further includes a gear set 213 and a gear motor 214;

[0086] The gear set 213 includes a driving gear 2131 and a driven gear 2132 that mesh with each other. The fixing clamp 211 includes two clamping jaws 2111. One end of the two clamping jaws 2111 is connected to the driving gear 2131 and the driven gear 2132 respectively.

[0087] The rotating shaft of the gear motor 214 is connected to the driving gear 2131 , and the gear motor 214 drives the gear set 213 to rotate to control the opening and closing of the fixing clamp 211 .

[0088] Based on the different telescopic members 24, an embodiment, such as Figure 2 As shown, the polishing part 22 and the fixing part 21 are both connected with a telescopic part 24, and the telescopic part 24 includes a cylinder 341. The cylinder 341 adopts a high-precision cylinder, such as a micro-cylinder. The cylinder 341 is connected to an air pump 242, and the air pump 242 is connected to an air source 243. The cylinder 341 is provided with a piston, and the piston is connected with a telescopic rod 244. The other end of the telescopic rod 244 is connected to the polishing part 22 and the fixing part 21. The air pump 242 fills gas into the cylinder 341, and the gas pushes the piston to move, so that the telescopic rod 244 drives the polishing part 22 and the fixing part 21 to move.

[0089] Another embodiment, such as Figure 4 As shown, the grinding part 22 and the fixing part 21 are both connected to the telescopic part 24, the telescopic part 24 includes a screw 245, the screw 245 is connected to the rotating motor 246, the rotating motor 246 is fixed to the connecting seat 23, the screw 245 is connected to the sliding sleeve 247, the connecting seat 23 is provided with a sliding rail 248, the sliding sleeve 247 is connected to the sliding rail 248, the grinding part 22 / fixing part 21 and the end of the sliding sleeve 247.

[0090] In one embodiment, during grinding, the telescopic member 24 of the fixing member 21 extends first, and the telescopic member 24 of the grinding member 22 delays for 0.5s-1s before starting to extend, so that the fixing member 21 starts grinding immediately after fixing the arch wire, thereby improving work efficiency.

[0091] Another embodiment, such as Figure 5 As shown, the grinding member 22 and the fixing member 21 are connected to the same connecting seat 23, and the connecting seat 23 is connected to a rotating motor 25, which drives the grinding unit 2 to move as a whole;

[0092] Based on the different carriers 31, the following embodiments are provided. In one embodiment, Figure 6 As shown, the carrier 31 includes a carrier clamp 311 and a transport seat 312, and the traction hook 4 includes a hook portion 41 and a snap seat 42. Figure 11 As shown, the carrying clamp 311 is used to clamp the hook portion 41 to keep the traction hook 4 in a vertical posture;

[0093] The transport seat 312 is arranged on the track 12, and the track 12 is arranged along the direction of the arch wire, so that the carrier 31 loaded with the traction hook 4 moves along the track 12 to the clamping position;

[0094] The transport seat 312 is provided with a floating mechanism 313, which is connected to the carrier clamp 311, so that the engaging seat 42 of the traction hook 4 moves to the corresponding position of the arch wire. The floating mechanism 313 is configured as a spring or an air bag, so that the transport seat 312 can move within a range of 1 cm-2 cm, so that the traction hook 4 can move. When the traction hook 4 moves to the clamping position, the position of the traction hook 4 is changed by applying pressure to the carrier 31, so that the engaging seat 42 is engaged with the arch wire.

[0095] The carrying clamp 311 includes a first bidirectional screw 3111, which is connected to a loading motor 3112. The loading motor 3112 is fixed to the transport base 312, and also includes two clamping bodies 3113. The transport base 312 is provided with a slide groove 3114. The clamping body 3113 can move in the slide groove 3114. The two clamping bodies 3113 are respectively connected to the first bidirectional screw 3111. The loading motor 3112 drives the first bidirectional screw 3111 to rotate so that the two clamping bodies 3113 move relative to each other.

[0096] A preferred example: the clamping bodies 3113 are respectively provided with fixing grooves 3115 that conform to the shape of the hook-shaped portion 41 , and the two clamping bodies 3113 cooperate to fix the traction hook 4 in the fixing grooves 3115 .

[0097] Another embodiment, such as Figure 7As shown, the difference from the above embodiment is that the transport member includes a carrying hook 314 and a transport seat 312. The carrying hook 314 is connected to the transport seat 312 via a spring. The transport hook 314 is provided with a fixing groove 3115 that conforms to the hook-shaped portion 41. The traction hook 4 is hung on the carrying hook 314. When the carrier 31 transports the traction hook 4 to the clamping position, the doctor manually engages the engaging seat 42 of the traction hook 4 with the arch wire. However, the elastic force of the spring should not be too large, as this will affect the engagement between the traction hook 4 and the arch wire.

[0098] In a specific embodiment, Figure 8 As shown, the assembly part 32 includes a fixing seat 322, an assembly clamp 321 and a driving mechanism 323;

[0099] The fixing seat 322 is provided on the track 12 and can be moved along the track 12 to a clamping position;

[0100] The assembly clamp 321 is driven by the driving mechanism 323 to open and close, and cooperates with the engaging seat 42, so that the engaging seat 42 is deformed and clamped to the arch wire.

[0101] In one embodiment, the connecting base 23, the fixed base 322, and the transport base 312 are all located on the same track 12. This arrangement minimizes movement errors and increases precision, allowing for more accurate positioning of each unit during processing. The connecting base 23, the fixed base 322, and the transport base 312 are each equipped with a motor and pulleys. The motor drives the pulleys, thereby moving the eye track 12.

[0102] Based on the difference between the driving mechanism 323 and the assembly clamp 321, it is divided into: an embodiment of the driving mechanism 323 includes a second bidirectional screw 3231, the second bidirectional screw 3231 is connected to the clamping motor 3232, the clamping motor 3232 and the fixing seat 322 are fixed in position, the second bidirectional screw 3231 is connected to the assembly clamp 321, the fixing seat 322 is provided with a slide 3221, the assembly clamp 321 is fixed to the slide 3221, and the assembly clamp 321 is provided with a clamping module 325, the clamping module 325 includes a force-applying protrusion 3251 and a force-bearing groove 3252, the force-bearing groove 3252 and the hook-shaped portion 41 are engaged with each other, the force-applying protrusion 3251 and the side of the engaging seat 42 where the hook-shaped portion 41 is not provided are in contact with each other, the clamping motor 3232 drives the second bidirectional screw 3231 to rotate, and then drives the assembly clamp 321 to slide along the slide 3221 and close, and the force-applying protrusion 3251 and the force-bearing groove 3252 move toward each other to clamp the engaging seat 42.

[0103] Another embodiment, such as Figure 9As shown, the difference from the above embodiment is that the assembly clamp 321 is provided with a pressure sensor 324, and the pressure sensor 324 includes a resistance strain gauge 3241. The resistance strain gauge 3241 is provided at the contact portion between the assembly clamp 321 and the traction hook 4. The pressure sensor 324 displays the pressure applied to the traction hook 4.

[0104] The pressure on the traction hook 4 is Fn, the pressure required for the traction hook 4 to complete clamping is F1, the maximum pressure that the arch wire can withstand is F0, and the threshold of the pressure sensor 324 is set to Fx, F1<Fx<F0. Fn will be displayed on the pressure sensor 324 during the clamping process. Both F1 and F0 can be obtained through measurement. Fx can be any value between F1 and F0 that is preset. When Fn reaches Fx, the assembly part 32 stops pressurizing.

[0105] One example is that both the assembly part 32 and the pressure sensor 324 are connected to a controller, and when Fn reaches Fx, the controller controls the assembly part 32 to stop pressurizing.

[0106] In another embodiment, the assembly clamp 321 is configured as a pressure plate 3211 and a pressure plate 3212 , and the driving mechanism 323 includes a pressure chamber 3233 , a liquid storage tank 3234 , and a pump 3235 ;

[0107] A liquid inlet pipe 3236 is connected between the liquid storage tank 3234 and the pressure chamber 3233, and the liquid inlet pipe 3236 is provided with a pump 3235;

[0108] The pressure chamber 3233 is connected to a pressure relief valve 3237 , which is connected to a liquid return pipe 3238 , and the other end of the liquid return pipe 3238 is connected to a liquid storage tank 3234 ;

[0109] The pressure chamber 3233 is provided with a piston, and the piston and the pressure plate 3211 are connected by a rod;

[0110] Liquid is filled into the pressure chamber 3233 to gradually increase the pressure in the pressure chamber 3233, thereby pushing the piston to move. The piston transmits force to the pressure plate 3211 through the rod. The pressure plate 3212 remains stationary on one side of the engaging seat 42. The pressure plate 3211 applies force to the engaging seat 42, causing the engaging seat 42 to deform and thus clamp the archwire.

[0111] When the pressure in the pressure chamber 3233 reaches the threshold of the pressure relief valve 3237, the pressure relief valve 3237 opens, and the liquid in the pressure chamber 3233 flows back through the return pipe 3238 to reduce the pressure in the pressure chamber 3233, ensuring that the force applied by the pressure plate 3211 to the engaging seat 42 does not exceed the maximum value that the arch wire can withstand.

[0112] In this embodiment, the pressure threshold of the pressure relief valve 3237 is Fx, the force exerted by the pressure plate 3211 on the traction hook 4 when the arch wire is clamped is F1, the maximum force the arch wire can withstand is F0, and the real-time pressure exerted by the pressure plate 3211 on the traction hook is Fn, and F1 < Fx < F0 is set.

[0113] When Fn<F1, the traction hook 4 and the arch wire are displaced toward each other for clamping;

[0114] When F1≤Fn<Fx, the traction hook 4 and the arch wire are relatively fixed and continuously reinforced;

[0115] When Fn=Fx, the pressure relief valve 3237 changes from a closed state to an open state, so that Fn never exceeds Fx, and Fn≤Fx<F0.

[0116] A specific embodiment, such as Figure 10 As shown,

[0117] The assembly clamp 321 is configured as a pressure plate 3211 and a pressure plate 3212 . The pressure plate 3211 is provided with a resistance strain gauge 3241 . The resistance strain gauge 3241 is connected to a pressure sensor 324 . The driving mechanism 323 includes a pressure chamber 3233 , a liquid storage tank 3234 , and a pump 3235 .

[0118] A liquid inlet pipe 3236 is connected between the liquid storage tank 3234 and the pressure chamber 3233, and the liquid inlet pipe 3236 is provided with a pump 3235;

[0119] The pressure chamber 3233 is connected to a pressure relief valve 3237 , which is connected to a liquid return pipe 3238 , and the other end of the liquid return pipe 3238 is connected to a liquid storage tank 3234 ;

[0120] The pressure chamber 3233 is provided with a piston, and the piston and the pressure plate 3211 are connected by a rod; the pressure sensor 324 and the pump 3235 are both connected to a controller;

[0121] After the liquid is filled into the pressure chamber 3233, the pressure in the pressure chamber 3233 gradually increases, thereby pushing the piston to move. The piston transmits the force to the pressure plate 3211 through the rod. The pressure plate 3212 remains stationary on one side of the engaging seat 42. The pressure plate 3211 applies force to the engaging seat 42. The resistance strain gauge 3241 is located between the pressure plate 3211 and the engaging seat 42. The deformation of the resistance strain gauge 3241 is captured by the pressure sensor 324, and the applied pressure is displayed as Fn. The pressure F1 required for clamping the traction hook 4 and the maximum pressure F0 of the arch wire are obtained in advance through measurement. The threshold value customized for the pressure relief valve 3237 is Fx, and F1<Fx <F0, set the threshold of the pressure sensor 324 to Fy, and set Fy between F1 and Fx, that is, F1≤Fy<Fx. When Fn is greater than Fy, when the force on the traction hook 4 reaches the threshold set by the pressure sensor 324, the controller controls the hydraulic mechanism to gradually slow down the pressure speed. When Fn is equal to Fx, the clamping is completed. At this time, the pressure in the pressure chamber 3233 reaches the threshold of the pressure relief valve 3237, and the pressure relief valve 3237 opens. The liquid in the pressure chamber 3233 flows back through the return pipe 3238, and the pressure in the pressure chamber 3233 is reduced, ensuring that the force applied by the pressure plate 3211 to the engaging seat 42 does not exceed the maximum value that the arch wire can withstand.

[0122] Making Fx>F1 makes the clamping effect more stable. If Fx<F1, when Fn reaches Fx, the pressure on the traction hook 4 does not meet the clamping conditions. If Fx=F1, because F1 is a measured value with measurement error, when Fn reaches Fx, the clamping may be unstable due to the error.

[0123] Setting Fx < F0 not only prevents the arch wire from being pinched off, but also leaves room for the assembly part 32 to buffer inertia. If Fx > F0, the arch wire will be pinched off when Fn reaches Fx. If Fx = F0, when Fn reaches Fx, although the pressure is stopped, the assembly part 32 is likely to exceed F0 due to inertia, which also poses a risk of pinching off the arch wire.

[0124] In a specific embodiment, Figure 1 As shown, the bearing unit 1 includes three evenly distributed support rods 11, and the arch wire is connected to the support rods 11 to fix the arch wire; the number of support rods 11 can be increased or decreased according to actual conditions, and can also be other supporting structures.

[0125] In a specific embodiment, the carrying unit 1 is provided with an identification piece that conforms to the tooth position setting to simulate the tooth position, so as to make the positioning of the traction hook 4 more accurate.

[0126] In a specific embodiment, the cross-section of the archwire is rectangular, and the types of archwires are: stainless steel wire 0.016×0.022 inches, stainless steel wire 0.017×0.025 inches, stainless steel wire 0.018×0.025 inches, stainless steel wire 0.019×0.025 inches, nickel titanium wire 0.016×0.022 inches, nickel titanium wire 0.017×0.025 inches, nickel titanium wire 0.018×0.025 inches, and nickel titanium wire 0.019×0.025 inches. Each type of archwire is numbered 1-8, and the required clamping force F and grinding amount D for each type of archwire are tested respectively.

[0127] The grinding unit 2 and the assembly unit 3 are both connected to the controller, which is connected to a storage module. The data of the various types of arch wires measured above are stored in the storage module according to the numbers. The carrying unit 1 is provided with a lifting assembly to adjust the relative positions between the arch wire and the grinding unit 2 and the assembly unit 3. The lifting assembly is connected to the controller, and the required fixed height H of each type of arch wire is recorded in the storage module according to the number. When the staff inputs or selects the number corresponding to each type of arch wire, the controller controls the carrying unit 1, the grinding unit 2, and the assembly unit 3 according to the clamping force F, the grinding amount D, and the fixed height H recorded in the number to ensure the accuracy of the clamping of the traction hook 4 for each type of arch wire.

[0128] Anything not described in the present invention can be achieved by adopting or drawing on existing technologies.

[0129] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0130] The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. An automatic clamping device for orthodontic arch wire and free traction hook, used for clamping arch wire and traction hook, characterized in that: It includes a carrying unit, a grinding unit and an assembly unit; The carrying unit is used to carry the arch wire, so that the arch wire remains in a suspended state to be clamped; The grinding unit includes a fixing part and a grinding part, wherein the fixing part is used to position both sides of the clamping part of the arch wire and the traction hook, and the grinding part is used to grind the surface of the arch wire at the clamping part to increase the roughness of the arch wire surface; The assembly unit includes a carrier and an assembly part, wherein the carrier is used to load the traction hook and transport it to the clamping position, and the assembly part is used to apply force and pressure to the traction hook to connect and fix the traction hook and the arch wire; The fixing member includes at least one fixing clip, and the fixing clip is used to clamp the two sides of the arch wire corresponding to the clamping part; The grinding member includes a grinding motor and a grinding wheel connected to the rotating shaft thereof, and at least two grinding wheels are provided along the circumferential direction of the arch wire; The fixing member further includes a gear set and a gear motor; The gear set includes a driving gear and a driven gear meshing with each other, and the fixing clamp includes two clamping jaws, one end of each of the two clamping jaws is connected to the driving gear and the driven gear respectively; The rotating shaft of the gear motor is connected to the driving gear, and the gear motor drives the gear set to rotate to control the opening and closing of the fixing clamp; The polishing part and the fixing part are both connected to a telescopic part, and the telescopic part includes a cylinder, an air pump and a telescopic rod. The cylinder is connected to the air pump, and the air pump is connected to an air source. The cylinder is provided with a piston, and the piston is connected to the telescopic rod. The other end of the telescopic rod is connected to the polishing part and the fixing part. The air pump fills gas into the cylinder, and the gas pushes the piston to move, so that the telescopic rod drives the polishing part and the fixing part to move.

2. The automatic clamping device for orthodontic arch wire and free traction hook according to claim 1, characterized in that: The carrier includes a carrier clamp and a transport seat, the traction hook includes a hook portion and a snap seat, the carrier clamp is used to clamp the hook portion to keep the traction hook in a vertical position; The transport seat is arranged on a track, and the track is arranged along the direction of the arch wire, so that the carrier loaded with the traction hook moves along the track to the clamping position; The transport seat is provided with a floating mechanism, and the floating mechanism is connected to the carrying clamp to move the engaging seat to a position corresponding to the arch wire.

3. The automatic clamping device for orthodontic arch wire and free traction hook according to claim 2, characterized in that: The carrying clamp includes a clamp body and a first bidirectional screw connected to a loading motor. The loading motor is fixed to the transport base. The transport base is provided with a slide groove. The clamp body can move in the slide groove. The two clamp bodies are respectively connected to the first bidirectional screw. The loading motor drives the first bidirectional screw to rotate so that the two clamp bodies move relative to each other.

4. The automatic clamping device for orthodontic arch wire and free traction hook according to claim 2, characterized in that: The assembly part includes a fixing seat, an assembly clamp and a driving mechanism; The fixing seat is arranged on the track and can move along the track to the clamping position; The assembly clamp is driven by the driving mechanism to open and close, and cooperates with the engaging seat, so that the engaging seat is deformed and clamped to the arch wire.

5. The automatic clamping device for orthodontic arch wire and free traction hook according to claim 4, characterized in that: The driving mechanism includes a second bidirectional screw and a clamping motor, the second bidirectional screw is connected to the clamping motor, the clamping motor and the fixed seat are fixed in position, the second bidirectional screw is connected to the assembling clamp, the fixed seat is provided with a slide, the assembling clamp is fixed to the slide, and the assembling clamp is provided with a clamping module, the clamping module includes a force-applying protrusion and a force-bearing groove, the force-bearing groove is engaged with the hook-shaped portion, the force-applying protrusion is in contact with the side of the clamping seat that is not connected to the hook portion, the clamping motor drives the second bidirectional screw to rotate, and then drives the assembly clamp to slide along the slide to close, and the force-applying protrusion and the force-bearing groove move toward each other to clamp the clamping seat.

6. The automatic clamping device for orthodontic arch wire and free traction hook according to claim 4, characterized in that: The assembly clamp is configured as a pressure plate and a pressure-bearing plate, and the driving mechanism includes a pressure chamber, a liquid storage tank, and a pump; A liquid inlet pipe is connected between the liquid storage tank and the pressure chamber, and the liquid inlet pipe is provided with the pump; The pressure chamber is connected to a pressure relief valve, the pressure relief valve is connected to a liquid return pipe, and the other end of the liquid return pipe is connected to the liquid storage tank; The pressure chamber is provided with a piston, and the piston and the pressure plate are connected by a rod; Liquid is filled into the pressure chamber to gradually increase the pressure in the pressure chamber, thereby pushing the piston to move. The piston transmits force to the pressure plate through a rod. The pressure plate remains stationary on one side of the engaging seat. The pressure plate applies force to the engaging seat, causing the engaging seat to deform and thus clamp the arch wire. When the pressure in the pressure chamber reaches the pressure relief valve threshold, the pressure relief valve opens, and the liquid in the pressure chamber flows back through the return pipe to reduce the pressure in the pressure chamber, ensuring that the force applied by the pressure plate to the engaging seat does not exceed the maximum value that the arch wire can withstand.

7. The automatic clamping device for orthodontic arch wire and free traction hook according to claim 6, characterized in that: The pressure relief valve force threshold is set to Fx, the force exerted by the pressure plate on the traction hook and the arch wire when they are clamped is set to F1, the maximum bearing force of the arch wire is F0, and the real-time pressure exerted by the pressure plate on the traction hook is set to Fn, and F1 < Fx < F0 is set; When Fn<F1, the traction hook and the arch wire are displaced toward each other for clamping; When F1≤Fn<Fx, the traction hook and the arch wire are relatively fixed and continuously reinforced; When Fn=Fx, the pressure relief valve changes from a closed state to an open state, so that Fn never exceeds Fx, and Fn≤Fx<F0.

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