Steel wire bending machine for removable dentures and correctors

Abstract

The utility model discloses a steel wire bending machine for removable dentures and correctors. The device comprises a machine shell, a rotating shaft and an air cylinder, claws are arranged on the rotating shaft, the air cylinder is provided with a push rod, the rotating shaft is provided with a driving component, the driving component controls the opening and closing states of the claws, the driving component is provided with an annular groove, the annular groove and the push rod move relatively, and the push rod can move in the rotating direction of the annular groove; the gas claw is arranged in the bending area, the steel wire can be clamped in the bending process, the steel wire is effectively prevented from being lengthened, and the correction effect is guaranteed; and when the claw is loosened and retreats, the steel wire can be prevented from being pulled back, and the bending accuracy is maintained. And finally, a universal rotating structure is additionally arranged for controlling opening and closing of the claw, so that limitation of the pipeline on rotation of the claw is successfully avoided, and the flexibility and convenience of operation are greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of invisible fixed appliances for removable dentures and orthodontic appliances, and particularly to a wire bending machine for removable dentures and orthodontic appliances. Background Art

[0002] In the field of removable dentures and orthodontic appliances, invisible fixed appliances are widely used. Existing appliances usually bend an arch wire into a shape matching the patient's tooth shape and then install it on the patient's teeth, relying on the tension force to achieve tooth shape correction. For example, an appliance for correcting the dental arch shape disclosed in the publication number CN209136922U achieves the correction purpose by tightening the arch wire.

[0003] However, currently in the process of bending the arch wire, it mainly relies on dentists to manually operate according to the patient's tooth shape. This method has obvious limitations. Since it completely depends on manual experience and skills, it is difficult to effectively guarantee the bending accuracy. Utility Model Content

[0004] The purpose of the present application is to provide a wire bending machine for removable dentures and orthodontic appliances to solve the problem that it is difficult to effectively guarantee the bending accuracy.

[0005] A wire bending machine for removable dentures and orthodontic appliances provided by the present application adopts the following technical solutions: It includes a machine shell. Inside the machine shell, there is a first power source. At the output end of the first power source, there is a moving plate. On the moving plate, there is a first mounting block. The first mounting block is rotatably connected to a rotating shaft. At the end of the rotating shaft, there is a claw hand. The first mounting block is equipped with a servo motor for driving the rotation of the rotating shaft and an opening and closing mechanism for driving the opening and closing of the claw hand. Inside the machine shell, there is a bending rod rotatably connected. At the end of the bending rod, there is a bending opening. Inside the bending opening, there is a bending part and a knife groove. A cutting knife is slidably connected inside the knife groove. Inside the machine shell, there is a power component for driving the rotation of the bending rod and the movement of the cutting knife.

[0006] By adopting the above scheme, the claw hand can clamp the wire. When the moving plate is driven by the first power source to move towards the bending rod, the claw hand can push the wire towards the bending rod. The bending rod bends the wire through circumferential rotation. After the bending is completed, the wire is cut by the cutting knife, thus realizing automatic bending. Compared with traditional wire bending, the accuracy and efficiency are greatly improved.

[0007] Preferably, the claw hand includes a second mounting block fixedly connected to the end of the rotating shaft. Grooves are opened at both ends of the second mounting block. Inside the grooves, there are pin shafts fixedly connected. The pin shafts are rotatably connected to claw blocks. There are sliding grooves on the claw blocks. A driving block is sleeved on the rotating shaft. At the end of the driving block, there is a protruding block. The protruding block is fixedly connected to a moving pin, and the moving pin can move along the sliding groove.

[0008] By adopting the above solution, the driving block serves as the driving input end for the opening and closing of the claw block. The driving block moves on the rotating shaft, enabling the moving pin to move along the sliding groove. During the movement of the moving pin, the moving pin applies forces in different directions to the claw block, enabling the claw block to open and close.

[0009] Preferably, during the movement of the moving pin in the sliding groove, the perpendicular distance between the axis of the moving pin and the axis of the rotating shaft gradually increases or gradually decreases.

[0010] By adopting the above solution, only when the center line of the sliding groove is not parallel to the axis of the rotating shaft, the relative movement of the moving pin with respect to the sliding groove can generate a force to drive the claw block to rotate.

[0011] Preferably, an annular groove is circumferentially provided on the driving block. A second power source is fixedly connected to the first mounting block. The output end of the second power source is fixedly connected to a push rod. The second power source drives the push rod to move along the axis of the rotating shaft, and the end of the push rod extends into the annular groove.

[0012] By adopting the above solution, the push rod can both push and pull the driving block and does not interfere with the rotation of the driving block.

[0013] Preferably, a fixed seat is fixedly connected inside the machine shell. A rotating column is rotatably connected inside the fixed seat. A bent rod passes through the rotating column, and a sliding key is provided between the bent rod and the rotating column.

[0014] By adopting the above solution, the rotation and up-and-down movement of the bent rod are realized. The rotating column can drive the bent rod to rotate through the sliding key, enabling the bent rod to move on the rotating column. The rotating column is the power input component for the rotation of the bent rod.

[0015] Preferably, the driving component includes a spring disposed between the cutting tool and the inner wall of the tool groove. A first air passage communicating with the tool groove is provided inside the bent rod. The spring forces the cutting tool to move towards the first air passage. The fixed seat is provided with a first annular cavity, the bent rod is provided with a second annular cavity, and the rotating column is provided with a second air passage. Both the first annular cavity and the second annular cavity communicate with the second air passage, and the second annular cavity communicates with the first air passage. An air pump is externally connected to the first annular cavity through a trachea. The rotating column penetrates the fixed seat, and a first gear is fixedly connected to the end of the rotating column. A driving motor is fixedly connected inside the machine shell, and the output end of the driving motor is fixedly connected to a second gear. The first gear meshes with the second gear. A third power source is fixedly connected to the machine shell, and the output end of the third power source is fixedly connected to the bottom of the bent rod.

[0016] By adopting the above solution, through the two annular cavities, air flow can always enter the first air passage during the rotation or movement of the bent rod. The air cylinder enables the bent rod to move up and down, thus realizing that the driving function of the cutting tool and the rotating function of the bent rod do not interfere with each other.

[0017] Preferably, a first power source is fixedly connected inside the machine housing. The output end of the first power source is fixedly connected to the moving plate. The moving plate is fixedly connected with a support block. The rotating shaft penetrates through the support block and is rotatably connected to the support block.

[0018] By adopting the above scheme, the claw hand clamps the steel wire, and the first power source drives the moving plate to reciprocate, realizing the intermittent feeding of the steel wire to the bending rod.

[0019] Preferably, a wire wheel is fixedly connected to the surface of the machine housing. The wire wheel is wound with a steel wire, and one end of the steel wire penetrates through the side wall of the machine housing and extends to the inside.

[0020] By adopting the above scheme, the wire wheel continuously supplies the steel wire during the wire bending process.

[0021] Preferably, a wire feeding area and a bending area are provided inside the machine housing. A pneumatic claw is provided on the inner wall of the wire feeding area. The axis of the rotating shaft faces the clamping part of the pneumatic claw. A guiding rod is provided on the inner wall of the bending area, and the axis of the guiding rod is on the same straight line as the axis of the rotating shaft.

[0022] By adopting the above scheme, the steel wire is transported to the bending rod under the action of the guiding rod. The pneumatic claw can clamp the steel wire during the bending process, effectively preventing the steel wire from being stretched and ensuring the correction effect; when the claw hand loosens and retracts, it can also prevent the steel wire from being pulled back.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Changing the driving mode of the opening and closing state of the claw hand to mechanical control greatly improves the control accuracy and stability, no longer relying on manual operation, reducing human errors, and ensuring the accuracy of bending. Secondly, the rotating shaft can rotate 360° in all directions, thereby driving the claw hand to rotate flexibly, which means that precise bending of the steel wire at various angles can be achieved, meeting the personalized needs of removable dentures and orthodontic appliances for different patients.

[0025] 2. The motor drives the rotating shaft through gear transmission, enabling the rotating shaft to rotate at any angle. When the steel wire needs to be fed, the claw hand clamps the steel wire and transports it to the bending area through the moving table; when bending is required, the rotating shaft rotates to drive the steel wire to rotate to achieve bending at different angles, and the whole process is efficient and accurate.

[0026] 3. The pneumatic claw provided in the bending area can clamp the steel wire during the bending process, effectively preventing the steel wire from being stretched and ensuring the correction effect; when the claw hand loosens and retracts, it can also prevent the steel wire from being pulled back and maintain the accuracy of bending. Finally, the universal rotation structure added to the opening and closing control of the claw hand successfully avoids the restriction of the pipeline on the rotation of the claw hand, greatly improving the flexibility and convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a schematic diagram of the overall structure of the casing appearance of this application;

[0028] Figure 2 It is a schematic diagram of the overall structure of the wire feeding area and the bending area of this application;

[0029] Figure 3 It is a schematic diagram of the overall structure of the wire feeding mechanism of this application;

[0030] Figure 4 It is a schematic diagram of the overall structure of the gripper of this application;

[0031] Figure 5 It is an exploded structure diagram of the gripper of this application;

[0032] Figure 6 It is this application Figure 3 The partial enlarged view at position a in;

[0033] Figure 7 It is a schematic diagram of the structure of the folding power component of this application;

[0034] Figure 8 It is this application Figure 7 The partial enlarged view at position b in.

[0035] Explanation of reference numerals:

[0036] 1. Housing; 11. Lower housing; 12. Upper housing; 121. Flip cover; 122. Observation port; 13. Partition; 14. Wire feeding area; 15. Bending area; 2. Wire wheel; 3. Wire feeding mechanism; 31. First power source; 32. First mounting block; 33. Gripper; 331. Second mounting block; 3311. Groove; 3312. Pin shaft; 332. Claw block; 3321. Slide groove; 333. Driving block; 3331. Annular groove; 3332. Protruding block; 3333. Moving pin; 34. Support block; 35. Push rod; 36. Rotating shaft; 37. Second power source; 38. Servo motor; 381. First gear; 382. Second gear; 39. Moving plate; 4. Bending mechanism; 41. Bending rod; 411. First air duct; 412. Second annular cavity; 42. Bending port; 421. Bending part; 422. Knife groove; 423. Cutter; 424. Spring; 43. Fixed seat; 431. First annular cavity; 44. Rotating column; 441. Second air duct; 5. Driving component; 51. Third power source; 52. Driving motor; 53. Third gear; 54. Fourth gear; 6. Pneumatic gripper; 7. Guide rod. Detailed implementation manners

[0037] The following combines the attached Figure 1 - Attached Figure 5 To further elaborate on this application in detail.

[0038] An embodiment of the present application discloses a wire bending machine for removable dentures and orthodontic appliances. Embodiment

[0039] Refer to Figure 1 And 2 As shown in FIGS. 9 and 10, a wire bending machine for removable dentures and orthodontic appliances includes an upper housing 12 and a lower housing 11. A partition 13 is fixedly connected inside the upper housing 12. The partition 13 divides the interior of the upper housing 12 into a wire feeding area 14 and a bending area 15. A wire reel 2 is fixedly connected to the upper housing 12, and a wire is wound around the wire reel 2. One end of the wire passes through the side wall of the upper housing 12 and extends into the wire feeding area 14. A wire feeding mechanism 3 is provided in the wire feeding area 14. The wire feeding mechanism 3 can not only straighten the wire but also clamp the wire and transport it to the bending area 15. An air gripper 6 is also provided between the wire feeding mechanism 3 and the bending mechanism 4. The air gripper 6 is arranged in the wire feeding area 14 and fixedly connected to the partition 13. The air gripper 6 can clamp the wire through a pneumatic method to prevent the wire from being pulled during the wire bending process. In this embodiment, a two-finger air gripper commonly used in industry is taken as an example. A guiding rod 7 is provided on the partition 13 in the bending area 15. The guiding rod 7 is a hollow rod. The wire passes through the partition 13 from the wire feeding area 14 and extends into the guiding rod 7. A bending mechanism 4 is provided in the bending area 15. The wire is transported along the guiding rod 7 to the bending mechanism 4, and the bending mechanism 4 bends and cuts the wire. A driving component 5 for driving the bending mechanism 4 to move is provided in the lower housing 11.

[0040] Refer to Figure 1 As shown in FIG. 11, the upper housing 12 is rotatably connected with a flip cover 121. After the product bending is completed, the flip cover 121 is opened to take out the bent product. The flip cover 121 is provided with an observation port 122, and a transparent acrylic plate is installed in the observation port 122. The bending situation of the product can be observed through the transparent acrylic plate.

[0041] Refer to Figure 3 As shown in FIGS. 12 and 13, the wire feeding mechanism 3 includes a servo motor 38, a moving plate 39 and a rotating shaft 36. The moving plate 39 is fixedly connected with a first mounting block 32 and a support block 34. The servo motor 38 drives the rotating shaft 36 to rotate. In this embodiment, gear transmission is taken as an example, and it can also be flexible transmission. The output end of the servo motor 38 is fixedly connected with a first gear 381, and the rotating shaft 36 is fixedly connected with a second gear 382 meshing with the first gear 381. The rotating shaft 36 passes through the first mounting block 32 and the support block 34, and at the same time, the rotating shaft 36 can rotate on the first mounting block 32 and the support block 34. One end of the rotating shaft 36 is provided with a claw 33. A first power source 31 is installed in the wire feeding area 14. The output moving end of the first power source 31 is fixedly connected with the moving plate 39. The first power source 31 is a mechanical device for driving the moving plate 39 to perform a linear motion. In this embodiment, a linear motor is taken as an example, and it can also be a cylinder, a hydraulic rod, etc.

[0042] Refer to Figure 4 AndFigure 5 The claw hand 33 includes a second mounting block 331 fixedly connected to the end of the rotating shaft 36. Grooves 3311 are formed at both ends of the second mounting block 331. A pin shaft 3312 is fixedly connected in each groove 3311. The pin shaft 3312 is rotatably connected to a claw block 332. The two claw blocks 332 form a component for clamping the steel wire. A sliding groove 3321 is provided on the claw block 332; the moving track of the sliding groove 3321 completely deviates from the direction towards the pin shaft 3312. A driving block 333 is sleeved on the rotating shaft 36. A protruding block 3332 is provided at the end of the driving block 333. A moving pin 3333 is fixedly connected to the protruding block 3332. By pushing the driving block 333, the moving pin 3333 can move along the sliding groove 3321. During the movement of the moving pin 3333 in the sliding groove 3321, the perpendicular distance between the axis of the moving pin 3333 and the axis of the rotating shaft 36 gradually increases or gradually decreases. In this embodiment, taking the case where the perpendicular distance between the axis of the moving pin 3333 and the axis of the rotating shaft 36 gradually increases as an example, when the moving pin 3333 moves in the positive direction, the inner wall of the sliding groove 3321 will be pushed by the moving pin 3333, and the clamping end of the claw block 332 will rotate around the pin shaft 3312 towards the direction away from the rotating shaft 36, thus realizing the opening of the two claw blocks 332. When the moving pin 3333 moves in the negative direction, the inner wall of the sliding groove 3321 will be pulled by the moving pin 3333, and the clamping end of the claw block 332 will rotate around the pin shaft 3312 towards the direction close to the rotating shaft 36, thus realizing the closing of the two claw blocks 332; an annular groove 3331 is provided in the circumferential direction of the driving block 333. A second power source 37 is fixedly connected to the first mounting block 32. The second power source 37 is a mechanical device capable of driving a certain component to perform a linear motion. In this embodiment, taking a cylinder as an example, the output end of the cylinder is fixedly connected to a push rod 35. The push rod 35 extends into the annular groove 3331. When the second power source 37 drives the push rod 35 to move, under the action of the push rod 35, the driving block 333 can move on the rotating shaft 36, thereby realizing the opening and closing of the claw block 332.

[0043] Refer to Figure 6 and Figure 7 As shown in FIGS. and, the steel wire is transported towards the bending mechanism 4 under the action of the wire feeding mechanism 3. The steel wire enters the guiding rod 7 through the clamping part of the air claw 6 and is transported to the bending mechanism 4 under the action of the guiding rod 7; the bending mechanism 4 includes a bending rod 41, a fixed seat 43 and a rotating column 44. The fixed seat 43 is fixedly installed in the bending area 15 and penetrates through the lower housing 11. A rotating column 44 is rotatably connected in the fixed seat 43. The bending rod 41 passes through the rotating column 44 and is slidably key-connected to the rotating column 44; the bending rod 41 rotates and moves up and down under the action of the driving component 5.

[0044] The driving component 5 includes a third power source 51 for driving the lifting of the bending rod 41 and a driving motor 52 for driving the rotation of the bending rod 41. The third power source 51 is a mechanical device for driving the linear motion of the driving component 5. In this embodiment, a cylinder is taken as an example, and it can also be a hydraulic rod, a lead screw assembly, etc. The output end of the cylinder is fixedly connected to the bottom of the bending rod 41. In this embodiment, the driving motor 52 takes gear transmission as an example, and drives the bending rod 41 to rotate through gear transmission. It can also drive the bending rod 41 to rotate through flexible transmission.

[0045] The end of the bending rod 41 is provided with a bending opening 42. Inside the bending opening 42, there is a bending part 421. Below it, there is a knife groove 422. A cutting knife 423 is slidably connected inside the knife groove 422. The knife groove 422 communicates with a first air passage 411. There is a spring 424 between the cutting knife 423 and the inner wall of the knife groove 422. Inside the bending rod 41, there is a first air passage 411 communicating with the knife groove 422. The spring 424 forces the cutting knife to move towards the first air passage 411. When the first air passage 411 is not ventilated, the cutting knife 423 retracts into the knife groove 422 under the action of the spring. Introducing air flow into the first air passage 411 can realize the movement of the cutting knife 423.

[0046] The fixed seat 43 is provided with a first annular cavity 431, the bending rod 41 is provided with a second annular cavity 412, and the rotating column 44 is provided with a second air passage 441. Both the first annular cavity 431 and the second annular cavity 412 communicate with the second air passage 441. The second annular cavity 412 communicates with the first air passage 411. The first annular cavity 431 is connected to an external air pump through a trachea. By setting up two annular cavities, the second air passage 441 is always in communication with the annular cavity, so that air flow can enter the first air passage 411. The rotating column 44 penetrates through the fixed seat 43. The end of the rotating column 44 is fixedly connected with a fourth gear 54. Inside the lower machine shell 11, a driving motor 52 is fixedly connected. The output end of the driving motor 52 is fixedly connected with a third gear 53. The third gear 53 meshes with the fourth gear 54. The lower machine shell 11 is fixedly connected with a third power source 51. The third power source 51 is a mechanical device for driving the linear motion of the driving component 5. In this embodiment, a cylinder is taken as an example. The output end of the cylinder is fixedly connected to the bottom of the bending rod 41. During the bending process, the steel wire is located at the bending part 421. After the bending is completed, the cylinder is used to push the bending rod 41 so that the steel wire is located between the two cutting knives 423, and the air flow of the push rod 35 drives the cutting knives 423 to cut the steel wire.

[0047] The principle of this embodiment is:

[0048] First, one end of the pulling wire, one end of the wire wound on the wire wheel 2 is manually passed through the side wall of the upper housing 12 and enters the rotating shaft 36. By continuous manual pushing, the wire is exposed from the other end of the rotating shaft 36, and then the exposed wire is pulled to the air claw 6 and passes through the clamping part of the air claw 6. The wire passes through the partition 13 and enters the guide rod 7. The wire is continuously pushed manually to pass through the guide rod 7, and the end of the wire passes through the bending opening 42 of the bending rod 41. The above steps complete the clamping process of the wire.

[0049] The relevant parameters that need to be bent are input into the equipment through the computer, the second power source 37 is started and the driving block 333 is pushed to move along the rotating shaft 36 through the push rod 35, and the driving block 333 pushes the moving pin 3333 to move along the slide groove 3321 away from the second mounting block direction 331, and the side of the slide groove 3321 is pulled by the moving pin 3333, so that the claw block 332 can revolve around the pin shaft 3312, so that the claw block 332 of the steel wire can clamp the steel wire twice, and then the first power source 31 is started to make the claw hand 33 move toward the bending area 15, and the steel wire is pushed toward the bending area under the drive of the claw hand 33.

[0050] When the bending rod 41 bends the steel wire, first the air claw 6 starts to clamp the steel wire to prevent it from being lengthened during the bending process. The driving motor 52 starts to drive the bending rod 41 to rotate through the gear transmission. During the rotation of the bending rod 41, the bending part 421 will contact the steel wire and bend the steel wire. When bending at different angles is required, the claw hand 33 clamps the steel wire again. At this time, the air claw 6 releases the steel wire, the servo motor 38 starts and drives the rotating shaft 36 to rotate through the gear transmission, and the steel wire is rotated by the claw hand 33, so that the steel wire can rotate at different angles.

[0051] After the bending is completed, the third power source 51 pushes the bending rod 41 to make the steel wire located between the two cutters 423. At this time, the external air pump ventilates the first annular cavity 431 through the air pipe, and the airflow passes through the second air channel 441, the second annular cavity 412, and the first air channel 411 in sequence and enters the knife groove 422, overcoming the elastic force of the spring 424 to push the cutter 423 to move, thereby cutting the steel wire.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wire bending machine for removable dentures and orthodontic appliances, characterized in that: It includes a housing (1), a moving plate (39) is arranged inside the housing (1), a first mounting block (32) is arranged on the moving plate (39), a rotating shaft (36) is rotatably connected to the first mounting block (32), a claw hand (33) is installed at the end of the rotating shaft (36), a servo motor (38) for driving the rotating shaft (36) to rotate is installed on the first mounting block (32), the housing (1) is provided with a first power source (31) for driving the moving plate (39) to move along the axis direction of the rotating shaft, a bending rod (41) is rotatably connected inside the housing (1), a bending opening (42) is arranged at the end of the bending rod (41), a bending part (421) and a knife groove (422) are arranged inside the bending opening (42), a cutting knife (423) is slidably connected inside the knife groove (422), and a driving component (5) for driving the bending rod (41) to rotate and the cutting knife (423) to move is arranged inside the housing (1).

2. The wire bending machine for removable dentures and orthodontic appliances according to claim 1, wherein: The claw hand (33) includes a second mounting block (331) fixedly connected to the end of the rotating shaft (36), grooves (3311) are formed at both ends of the second mounting block (331), a pin shaft (3312) is fixedly connected inside the grooves (3311), a claw block (332) is rotatably connected to the pin shaft (3312), a sliding groove (3321) is arranged on the claw block (332), a driving block (333) is sleeved on the rotating shaft (36), a protruding block (3332) is arranged at the end of the driving block (333), a moving pin (3333) is fixedly connected to the protruding block (3332), and by pushing the driving block (333), the moving pin (3333) can move along the sliding groove (3321).

3. The wire bending machine for removable dentures and orthodontic appliances according to claim 2, characterized in that: During the movement of the moving pin (3333) in the sliding groove (3321), the perpendicular distance between the axis of the moving pin (3333) and the axis of the rotating shaft (36) gradually increases or gradually decreases.

4. The wire bending machine for removable dentures and orthodontic appliances according to claim 2, characterized in that: An annular groove (3331) is arranged circumferentially on the driving block (333), a second power source (37) is fixedly connected to the first mounting block (32), a push rod (35) is fixedly connected to the output end of the second power source (37), the second power source (37) drives the push rod (35) to move along the axis direction of the rotating shaft (36), and the end of the push rod (35) extends into the annular groove (3331).

5. The wire bending machine for removable dentures and orthodontic appliances according to claim 2, characterized in that: The driving component (5) includes a fixed seat (43) and a rotating column (44), the fixed seat (43) is fixedly connected to the housing (1), the fixed seat (43) is sleeved on the rotating column (44), the bending rod (41) passes through the rotating column (44), a sliding key is arranged between the bending rod (41) and the rotating column (44), a first gear (381) is fixedly connected to the end of the rotating column (44), a driving motor (52) is fixedly connected inside the housing (1), a second gear (382) is fixedly connected to the output end of the driving motor (52), the first gear (381) is meshed with the second gear (382), a third power source (51) is fixedly connected to the housing (1), and the output end of the third power source (51) is fixedly connected to the bottom of the bending rod (41).

6. The wire bending machine for removable dentures and orthodontic appliances according to claim 5, characterized in that: A spring (424) between the cutting tool (423) and the inner wall of the tool groove (422), a first air passage (411) communicating with the tool groove (422) is provided in the bending rod (41), the spring (424) forces the cutting tool to move towards the first air passage (411), the fixed seat (43) is provided with a first annular cavity (431), the bending rod (41) is provided with a second annular cavity (412), the rotating column (44) is provided with a second air passage (441), the first annular cavity (431) and the second annular cavity (412) are both communicated with the second air passage (441), the second annular cavity (412) is communicated with the first air passage (411), and an air pump is externally connected to the first annular cavity (431) through a trachea.

7. The wire bending machine for removable dentures and orthodontic appliances according to claim 1, characterized in that: A first power source (31) is fixedly connected inside the machine housing (1), the output end of the first power source (31) is fixedly connected to the moving plate (39), the moving plate (39) is fixedly connected to a support block (34), the rotating shaft (36) penetrates through the support block (34), and the rotating shaft (36) is rotatably connected to the support block (34).

8. The wire bending machine for removable dentures and orthodontic appliances according to any one of claims 1-7, characterized in that: A wire wheel (2) is fixedly connected to the surface of the machine housing (1).

9. The wire bending machine for removable dentures and orthodontic appliances according to any one of claims 1-7, characterized in that: A wire feeding area (14) and a bending area (15) are provided inside the machine housing (1), a pneumatic claw (6) is provided on the inner wall of the wire feeding area (14), the axis of the rotating shaft (36) faces the clamping part of the pneumatic claw (6), a guiding rod (7) is provided on the inner wall of the bending area (15), and the axis of the guiding rod (7) is on the same straight line as the axis of the rotating shaft (36).

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