CN112690552B

CN112690552B - Finger positioning device, nail art machine, finger positioning method and nail art method

Info

Publication number: CN112690552B
Application number: CN202110023591.4A
Authority: CN
Inventors: 杨丙辉; 邱腾熙
Original assignee: Shanghai Meinaier Technology Co ltd
Current assignee: Shanghai Meinaier Technology Co ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2023-03-07
Anticipated expiration: 2041-01-08
Also published as: CN112690552A

Abstract

The embodiment of the invention relates to a nail art machine, in particular to a finger positioning device, a nail art machine, a finger positioning method and a nail art method, wherein the finger positioning device comprises: the device comprises a finger support, a finger support rotation driving mechanism, a camera module and a clamping mechanism; the finger support is used for supporting fingers, the finger support rotary driving mechanism is connected with the finger support, and the finger support rotary driving mechanism is used for driving the finger support to rotate around the axis direction of the finger support; the camera module is arranged opposite to the finger support, and the clamping mechanism is arranged on the finger support; the clamping mechanism, the finger support rotation driving mechanism and the camera module are all in communication connection with a main control module of the nail machine. In actual application, the main control module judges whether the nail surface of a finger in the finger rest deflects or not according to the image obtained by the camera module, and controls the finger rest rotary driving mechanism when the nail surface is judged to deflect, so that the finger rest rotary driving mechanism drives the finger rest to rotate around the axis of the finger rest in the direction opposite to the deflection direction of the nail surface, thereby eliminating the deflection of the nail surface and improving the printing quality.

Description

Finger positioning device, nail art machine, finger positioning method and nail art method

Technical Field

The invention relates to a nail machine, in particular to a hand support of the nail machine, the nail machine and the nail machine.

Background

Nail art machines, which are color drawing devices capable of drawing patterns on natural nails and artificial nails, have been used by more and more nail shops. Although, carry out first beautiful comparison manual work first beautiful through the first beautiful machine, it is fast to have, and need not operating personnel can realize the first beautiful operation through professional training, but present first beautiful machine, when carrying out the first beautiful, in order to guarantee can be accurate print corresponding pattern to the nail on, just need the accurate printing position of placing at the first beautiful machine of finger of waiting to first beautiful, but owing to the artificial certain error that can exist that places certainly, simultaneously at the printing in-process, the shake phenomenon can inevitably appear in the finger, consequently can very big influence print quality. In addition, because of the restriction of the structure of the nail art machine, in the nail art process, the nail art of one finger can only be realized generally, namely the current nail art machine only has the function of positioning one finger, so that if a customer needs to perform nail art on ten fingers of both hands, the customer is required to place the nail for 10 times, and meanwhile, the printing plane needs to be recalibrated due to the fact that the nail art machine is placed every time, so that the whole nail art process is still long.

Disclosure of Invention

The invention aims to provide a finger positioning device, a nail machine, a finger positioning method and a nail decorating method, which can greatly improve the nail decorating efficiency of the nail machine.

To solve the above technical problem, an embodiment of the present invention provides a finger positioning device, including:

a finger rest for supporting a finger;

the finger support rotation driving mechanism is connected with the finger support and is used for driving the finger support to rotate around the axis direction of the finger support;

the camera module is used for acquiring the image of the finger rest;

the clamping mechanism is arranged on the finger rest and used for clamping and fixing fingers;

the clamping mechanism, the finger support rotation driving mechanism and the camera module are all in communication connection with a main control module of the nail art machine;

the main control module is used for judging whether the nail surface of a finger in the finger rest deflects or not according to the image obtained by the camera module, and is also used for controlling the finger rest rotation driving mechanism when the nail surface is judged to deflect, so that the finger rest rotation driving mechanism drives the finger rest to rotate around the axis of the finger rest in the direction opposite to the nail surface deflection direction;

the main control module is also used for controlling the finger rest rotation driving mechanism to stop working after the deflection of the nail surface is eliminated, and the current nail surface is used as a printing surface.

In addition, an embodiment of the present invention also provides a nail art, including:

a hand rest and a printing module; the hand rest and the printing module are arranged opposite to each other along the direction of a preset straight line;

the finger positioning device is arranged on one side of the hand rest relative to the printing module;

the hand rest lifting driving mechanism is connected with the hand rest and is used for driving the hand rest to do linear motion relative to the printing module;

the main control module is respectively in communication connection with the printing module, the finger support rotation driving mechanism, the camera module and the hand support lifting driving mechanism;

the main control module is used for controlling the hand support lifting driving mechanism, so that the hand support lifting driving mechanism drives the hand support to move to a printing position in the direction of the printing module, or the hand support lifting driving mechanism drives the hand support to move to an initial position in the direction away from the printing module;

and after the hand support moves to the printing position, the main control module is also used for controlling the printing module to print a preset pattern on the printing surface according to the obtained printing surface.

In addition, an embodiment of the present invention further provides a finger positioning method applied to a nail art machine, the nail art machine including: the device comprises a finger support for supporting fingers, a clamping mechanism for clamping and fixing the fingers, a finger support rotation driving mechanism for driving the finger support to rotate around the axis direction of the finger support, a camera module for acquiring images of the finger support and a main control module;

the main control module is respectively in communication connection with the clamping mechanism, the finger support rotation driving mechanism and the camera module; the finger positioning method comprises the following steps:

the main control module controls the clamping mechanism to clamp the fingers in the finger rest;

the main control module controls the camera module to acquire the image of the finger rest;

the main control module judges whether the nail surface of the finger in the image deflects or not according to the obtained image;

after the main control module judges that the nail surface deflects, the finger support rotary driving mechanism is controlled to drive the finger support to rotate around the axis of the finger support in the direction opposite to the nail surface deflection direction;

and after the main control module judges that the nail surface is not deflected, the main control module controls the module to take the current nail surface as a printing surface.

In addition, the embodiment of the invention also provides a nail art method, which is applied to a nail art machine, and the nail art machine comprises: the finger support comprises a hand support, a finger support arranged on the hand support and used for supporting fingers, a clamping mechanism used for clamping and fixing the fingers, a printing module arranged opposite to the hand support, a hand support lifting driving mechanism used for driving the hand support to do linear motion relative to the printing module, a finger support rotating driving mechanism used for driving the finger support to rotate around the axis direction of the finger support, a camera module used for acquiring images of the finger support and a main control module;

the nail beautifying method comprises the following steps of:

the main control module controls the hand support lifting driving mechanism to enable the hand support lifting driving mechanism to drive the hand support to move towards the direction of the printing module;

when the hand support moves to a printing position, the main control module controls the hand support lifting driving mechanism to stop and controls the camera module to acquire an image of the finger support;

after the main control module judges that the nail surface deflects, the main control module controls the finger support rotary driving mechanism to enable the finger support rotary driving mechanism to drive the finger support to rotate around the axis of the finger support in the direction opposite to the nail surface deflection direction;

and after the main control module judges that the nail surface does not deflect, the main control module controls the finger rest rotation driving mechanism to stop moving and takes the current nail surface as a printing surface.

The main control module controls the printing module to print a preset pattern on the printing surface;

after printing is finished, the main control module controls the hand support lifting driving mechanism to enable the hand support lifting driving mechanism to drive the hand support to move towards a direction far away from the printing module;

and when the hand support moves to the initial position, the main control module controls the finger support rotation driving mechanism to stop moving and controls the clamping mechanism to loosen the fingers.

Compared with the prior art, the finger positioning device can support the finger by means of the finger holder, the clamping mechanism can clamp and fix the finger placed on the finger holder under the control of the main control module of the nail art, the camera module can acquire the image of the finger holder, the main control module can judge whether the nail surface of the finger in the finger holder deflects or not according to the image acquired by the camera module, and after the deflection is judged, the deflection of the nail surface can be eliminated by controlling the finger holder rotation driving mechanism to drive the finger holder to rotate around the axis direction of the finger holder, so that the printing module can be ensured to accurately print the preset pattern on the nail surface, and the printing quality is improved.

Additionally, the finger rest; having a top side, a bottom side opposite the top side; the finger positioning device is characterized in that a groove body for placing fingers is formed in the top side, the groove body extends along the length direction of the groove, so that a notch is formed at one end of the finger support along the length direction of the groove, and a fingertip positioning part opposite to the notch is formed at the other end of the finger support.

In addition, the finger rest rotation driving mechanism includes:

the pendulum rod includes: a fixed portion connected to the bottom side of the finger rest, a movable portion disposed away from the fixed portion;

the finger support rotation driving component is connected with the movable part; the finger support rotary driving assembly is used for driving the swing rod to rotate around the axis direction of the finger support.

In addition, the pendulum rod still includes: the swing rod body is connected with the fixed part and the movable part and is vertical to the bottom side of the finger rest or parallel to the bottom side of the finger rest;

the finger rest rotation driving assembly includes: the finger support rotating motor and the screw rod are coaxially connected with the main shaft of the finger support rotating motor, the axial direction of the screw rod is perpendicular to the swing rod body, and the movable part of the swing rod is sleeved on the screw rod and is in threaded connection with the screw rod.

In addition, the finger rest rotation driving mechanism further includes:

the first detection module and the second detection module are arranged oppositely along the rotation direction of the swing rod body;

the first detection module is used for detecting the swing rod body when the swing rod body rotates towards a direction far away from the second detection module, and is also used for outputting a first electric signal when the swing rod body is detected;

the second detection module is used for detecting the swing rod body when the swing rod body rotates towards the direction far away from the first detection module, and is also used for outputting a second electric signal when the swing rod body is detected;

the first detection module, the second detection module and the finger support rotating motor are all in communication connection with the main control module, and the main control module is used for receiving the first electric signal and the second electric signal and controlling the finger support rotating motor to stop working when receiving the first electric signal or the second electric signal.

In addition, the finger rest rotation driving mechanism further includes:

the first encoder is sleeved on the main shaft of the finger support rotating motor and is in communication connection with the main control module;

the first encoder is used for detecting the rotation angle of the main shaft of the finger support rotating motor in real time and uploading the detected rotation angle of the main shaft to the main control module in real time, and the main control module is used for controlling the finger support rotating motor according to the received rotation angle.

In addition, the clamping mechanism includes:

a stop strip disposed opposite the top side of the finger rest;

the air bag is fixedly arranged in the groove body and is opposite to the limiting strip;

the valve module is provided with an air outlet end connected with the air bag and an air inlet end connected with an external air source;

the pressure detection module is arranged in the air bag and used for detecting the pressure value of the air bag during inflation in real time;

the valve module and the pressure detection module are both in communication connection with the main control module, the pressure detection module is further used for uploading detected pressure values to the main control module, and the main control module is used for closing the valve module when the received pressure values reach preset values.

In addition, the hand rest lifting drive mechanism includes:

the bracket supports and fixes the hand rest; the bracket includes: the support body is connected with the hand support, and the lifting plate is connected with the support body; the support body extends vertically towards the direction far away from the printing module, and the lifting plate is arranged at one end, far away from the hand rest, of the support body;

the hand support lifting driving assembly is connected with the lifting plate and used for driving the support and the hand support to linearly move relative to the printing module; the hand support lifting driving assembly is in communication connection with the main control module.

In addition, the hand rest lift drive assembly includes:

the motor fixing plate is parallel to the lifting plate and is arranged oppositely; the lifting plate is positioned between the motor fixing plate and the hand support;

the hand support lifting motor is arranged on one side, away from the lifting plate, of the motor fixing plate; the axis direction of a rotating shaft of the hand support lifting motor is perpendicular to the lifting plate, and the hand support lifting motor is in communication connection with the main control module;

the screw rod is coaxially fixed with a rotating shaft of the hand rest lifting motor; the motor fixing plate is also provided with a shaft hole through which the screw rod passes;

the motor fixing plate is provided with a guide post, and the guide post is parallel to the screw rod; the lifting plate is provided with a guide hole corresponding to the guide post and allowing the guide post to penetrate through, and the lifting plate can slide along the axis direction of the guide post.

In addition, the hand rest lifting drive mechanism further comprises:

the third detection module and the fourth detection module are oppositely arranged on the support body along the axial direction of the guide post; the third detection module, the fourth detection module and the hand rest lifting motor are all in communication connection with a main control module of the nail art machine;

the stop block is fixedly arranged on the guide post and is positioned between the third detection module and the fourth detection module;

the third detection module and the fourth detection module are used for detecting the stop block when the hand rest moves linearly relative to the printing module;

the third detection module is also used for outputting a third electric signal to the main control module when the stop block is detected; the fourth detection module is further used for outputting a fourth electric signal to the main control module when the stop block is detected;

and the master control module is also used for controlling the hand support lifting motor to stop working when receiving the third electric signal or the fourth electric signal.

In addition, the hand rest lifting drive mechanism further comprises:

the second encoder is sleeved on the rotating shaft of the hand support lifting motor and is in communication connection with the main control module;

the second encoder is used for detecting the rotation angle of the rotating shaft of the hand support rotating motor in real time and uploading the detected rotation angle of the rotating shaft to the master control module in real time.

In addition, the nail art machine still includes: the hand rest rotary driving mechanism, just the hand rest includes:

a finger rest having an upper surface, a lower surface opposite the upper surface:

the first positioning plate and the second positioning plate are arranged on the finger supporting plate in an opposite mode; the first positioning plate and the second positioning plate are formed by vertically extending along the direction from the upper surface to the lower surface, one side of the first positioning plate, which is far away from the second positioning plate, is a first side surface, and one side of the second positioning plate, which is far away from the first positioning plate, is a second side surface;

the rotating bracket is arranged on the lower surface of the finger supporting plate and is positioned between the first positioning plate and the second positioning plate;

the hand support rotation driving mechanism is connected with the rotation bracket and used for driving the hand support to rotate around a preset axis, and the preset axis is positioned between the first side surface and the second side surface and is parallel to the first side surface and the second side surface;

the finger support and the finger support rotation driving mechanism are respectively provided with a plurality of same numbers which are only corresponding, and at least one finger support is embedded in the upper surface, the first side surface and the second side surface respectively.

In addition, the hand rest rotation driving mechanism includes:

the connecting shaft is connected with the rotating bracket along the direction of the preset axis;

the hand support rotation driving assembly is connected with the connecting shaft and used for driving the connecting shaft to rotate;

the hand support rotation driving assembly is further in communication connection with the main control module.

In addition, the hand rest rotation driving mechanism further includes:

the limiting ring is sleeved on the connecting shaft and is coaxially fixed with the connecting shaft; the outer ring surface of the limiting ring is partially protruded towards the direction far away from the inner ring surface to form a limiting protrusion;

a fifth detection module; the limiting ring is arranged opposite to the limiting ring along the direction perpendicular to the preset axis; the fifth detection module is used for detecting the limiting bulge when the limiting ring rotates in the forward direction along with the connecting shaft, and is also used for outputting a fifth electric signal when the limiting bulge is detected;

the sixth detection module is arranged opposite to the limiting ring along the direction perpendicular to the preset axis; the sixth detection module is used for detecting the limiting protrusion when the limiting ring rotates in the reverse direction along with the connecting shaft, and is also used for outputting a sixth electric signal when the limiting protrusion is detected;

the detection direction of the fifth detection module is perpendicular to the detection direction of the sixth detection module, and the fifth detection module and the sixth detection module are both in communication connection with the main control module;

the master control module is used for receiving the fifth electric signal and the sixth electric signal, and the master control module is further used for controlling the hand support rotation driving assembly to stop working when receiving the fifth electric signal or the sixth electric signal, and sending an instruction for driving the connecting shaft to rotate reversely when the hand support rotation driving assembly works next time.

In addition, the hand rest rotation driving assembly includes:

the hand support rotating motor is provided with a driving shaft and is in communication connection with the main control module;

the worm wheel is coaxially fixed with the connecting shaft;

and the worm is coaxially connected with the driving shaft and meshed with the worm wheel.

In addition, the hand rest rotation driving assembly further includes:

the third encoder is sleeved on the driving shaft of the hand support rotating motor and is in communication connection with the main control module;

the third encoder is used for detecting the rotation angle of the driving shaft of the hand support rotating motor in real time and uploading the detected rotation angle of the driving shaft to the main control module in real time, and the main control module is used for controlling the hand support rotating motor according to the received rotation angle.

In addition, the step of judging whether the nail surface of the finger in the image deflects or not by the main control module according to the obtained image specifically comprises the following steps:

the main control module acquires the left boundary and the right boundary of the finger nail in the image according to the acquired image;

the main control module calculates the vertical distance between the left side boundary and the right side boundary of the finger nail to a preset plane respectively;

if the vertical distance from the left side boundary to the preset plane is equal to the vertical distance from the right side boundary to the preset plane, the main control module judges that the finger in the image is not deflected;

if the vertical distance from the left side boundary to the preset plane is larger than or smaller than the vertical distance from the right side boundary to the preset plane, the main control module judges that the finger in the image deflects.

In addition, the hand rest has an upper surface opposite to the printing module, a first side surface and a second side surface which are arranged perpendicular to the upper surface, and the first side surface and the second side surface are opposite to each other; the finger supports and the finger support rotary driving mechanisms are respectively provided with a plurality of finger supports, the number of the finger supports is the same, and the finger supports are only corresponding;

at least one finger rest is embedded in each of the upper surface, the first side surface and the second side surface; the nail machine still includes: the hand support rotation driving mechanism is connected with the hand support and used for driving the hand support to rotate around the direction of a preset axis, the hand support rotation driving mechanism is also in communication connection with a main control module, and the preset axis is located between the first side face and the second side face and is parallel to the first side face and the second side face;

before the main control module controls the hand support lifting driving mechanism to drive the hand support to move towards the printing module, the method further comprises:

the main control module acquires the position of the finger support for fixing the finger to be manicured;

the main control module judges whether the finger support for fixing the finger to be manicured is arranged on one side of the hand support relative to the printing module at present;

if the master control module judges that the current finger support for fixing the finger to be manicured does not exist on one side of the hand support relative to the printing module, the master control module controls the hand support rotation driving mechanism to drive the hand support to rotate clockwise or anticlockwise for a preset angle according to the acquired positions of the rest finger supports, so that one side of the finger support for fixing the finger to be manicured on the hand support is relative to the printing module.

Drawings

FIG. 1 is a schematic structural diagram of a finger positioning device according to a first embodiment of the present invention;

FIG. 2 is a schematic view of another finger positioning device according to the first embodiment of the present invention;

FIG. 3 is a block diagram of a system of finger pointing devices according to a first embodiment of the present invention;

FIG. 4 is a schematic structural view of a nail machine according to a second embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a hand rest according to a second embodiment of the present invention;

FIG. 6 is a schematic view of the assembly of a hand rest, a plurality of finger rests and a plurality of finger rest rotation drive mechanisms according to a second embodiment of the present invention;

FIG. 7 is a schematic view of the hand rest and the hand rest rotation driving structure according to the second embodiment of the present invention;

FIG. 8 is a block diagram of the system modules of the nail art machine according to the second embodiment of the present invention;

FIG. 9 is a flowchart illustrating a finger positioning method according to a third embodiment of the present invention;

FIG. 10 is a schematic structural view of a finger positioning device applied to a nail machine according to a third embodiment of the present invention;

FIG. 11 is a block diagram of a system module of a finger positioning device of a nail machine for applying the finger positioning method of the third embodiment of the present invention;

fig. 12 is a block diagram schematically illustrating a flow of a nail art method according to a fourth embodiment of the present invention;

FIG. 13 is a schematic view of a nail art method applied to a nail art machine according to a fourth embodiment of the present invention;

FIG. 14 is a schematic structural view of the finger positioning device of FIG. 13;

FIG. 15 is an assembled view of the hand rest and hand rest rotary drive mechanism of FIG. 13;

fig. 16 is a block diagram of a system module of a nail art method according to a fourth embodiment of the present invention applied to a nail art machine.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.

A first embodiment of the present invention relates to a finger positioning device, as shown in fig. 1, comprising: a finger rest 1, a finger rest rotation driving mechanism 2, a camera module 3 and a clamping mechanism 4. Wherein, indicate to hold 1 and be used for bearing finger, indicate to hold in palm rotary drive mechanism 2 and indicate to hold in palm 1 to be connected, and should indicate to hold in palm rotary drive mechanism 2 and be used for driving and indicate that holds in palm 1 and rotate around its axis direction.

Next, as shown in fig. 1, the camera module 3 is disposed opposite to the finger rest 1, for example, the camera module 3 can be disposed above the finger rest 1, the camera module 3 is used for acquiring an image of the finger rest 1, and the clamping mechanism 4 is disposed on the finger rest 1 for clamping and fixing a finger.

In addition, as shown in fig. 3, the clamping mechanism 4, the finger rest rotation driving mechanism 2, and the camera module 4 are all connected to the main control module of the nail machine. In practical application, the main control module is used for judging whether the nail surface of the finger in the finger rest 1 deflects or not according to the image obtained by the camera module 4, and the main control module is also used for controlling the finger rest rotary driving mechanism 2 when judging that the nail surface deflects, so that the finger rest rotary driving mechanism 2 drives the finger rest 1 to rotate around the axis thereof towards the direction opposite to the deflection of the nail surface. And finally, the main control module is also used for controlling the finger rest 1 to rotate the driving mechanism to stop working after the deflection of the nail surface is eliminated, and taking the current nail surface as a printing surface.

It can be seen from the above that, the finger positioning device of the present embodiment can support a finger by means of the finger holder 1, and at the same time, under the control of the main control module of the nail machine, the clamping mechanism 4 can clamp and fix the finger placed on the finger holder 1, and the camera module 3 can acquire an image of the finger holder, so that the main control module can judge whether the nail surface of the finger in the finger holder 1 deflects according to the image acquired by the camera module 3, and after the deflection is judged, the deflection of the nail surface can be eliminated by controlling the finger holder rotation driving mechanism 2 to drive the finger holder 1 to rotate around the axis direction thereof, so that the printing module of the nail machine can accurately print a preset pattern on the nail surface, and further improve the printing quality.

Specifically, in the present embodiment, as shown in fig. 1, the finger rest 1 has a top side 11 and a bottom side 12 opposite to the top side 11, and the top side 11 is opened with a groove body 13 for placing a finger, and the groove body 13 extends along the groove length direction, so that one end of the finger rest 1 along the groove length direction forms a notch 131, and the other end forms a fingertip positioning portion 132 opposite to the notch 131.

Next, as shown in fig. 1, the clamping mechanism 4 includes: a stop bar 41, an air bag 42, a valve module (not shown) and a pressure detection module. Wherein, spacing strip 41 and the top side 11 relative setting of finger support 1, simultaneously, gasbag 42 sets firmly in cell body 13 to set up each other with spacing strip 41, and pressure detection module sets up in gasbag 42, and this pressure detection module can be used to real-time detection gasbag 42 pressure value when aerifing. In addition, the valve module has an outlet end connected to the air bag 42 and an inlet end connected to an external air source. Moreover, it should be noted that, in this embodiment, as shown in fig. 3, the valve module and the pressure detection module are both in communication connection with the main control module, the pressure detection module is further configured to upload the detected pressure value to the main control module, and the main control module is configured to close the valve module when the received pressure value reaches a preset value, so that the gas source cannot continuously deliver gas into the airbag 42. For example, since the thickness of five fingers of a customer is different, when the air source inflates the air bag 42 through the valve module, the clamping positions of the air bag 42 and the limiting strip 41 on each finger are different, that is, the expansion degree of the air bag 42 is different, so that the air bag 42 can be matched with the limiting strip 41 to clamp each finger accurately, when the air bag 42 is matched with the limiting strip 41 to clamp the finger, the reverse pressure of the finger on the air bag 42 can be set, that is, when the air bag 42 is matched with the limiting strip 41 to clamp and fasten any finger, if the pressure detection module detects that the pressure value on the air bag 42 reaches a preset value, it indicates that the finger is lifted to the same height by the air bag 42, and the pressure detection module can be matched with the limiting strip 41 to clamp the finger. It should be noted that the pressure detection module used in the present embodiment may be a pressure sensor, but of course, in actual application, the pressure detection module may also use other detection components to realize accurate measurement of the pressure of the air bag 42.

Further, as shown in fig. 1, a finger rest rotation driving mechanism 2 is connected to a bottom side 12 of the finger rest 1 for driving the finger rest 1 to rotate about an axial direction thereof, and the axial direction of the finger rest 1 is the same as a groove length direction of the groove body 13. Meanwhile, in order to realize that the finger rest rotary driving mechanism 2 drives the finger rest 1 to rotate around the axis direction thereof, as shown in fig. 1, the finger rest rotary driving mechanism 2 includes: a swing link 21 and a finger rest rotation driving assembly 22. Wherein, the pendulum rod 21 includes: a fixed part 211 connected with the bottom side 12 of the finger rest 1, a movable part 212 arranged far away from the fixed part 211, and a swing rod body 213 connecting the fixed part 211 and the movable part 212. Meanwhile, the finger rest rotation driving assembly 22 is connected with the movable part 212, and the finger rest rotation driving assembly 22 is used for driving the swing link 21 to rotate around the axial direction of the finger rest 1.

Furthermore, in order to realize the rotation of the finger rest 1 around its axis, the pendulum body 213 may be perpendicular to the bottom side 212 of the finger rest 1 as shown in fig. 1, or the pendulum body 213 may be parallel to the bottom side 212 of the finger rest 1 as shown in fig. 2. Meanwhile, as shown in fig. 1 and 2, the finger rest rotation driving assembly 22 includes: the finger rest rotating motor 221 and the screw rod 222 are coaxially connected with the main shaft of the finger rest rotating motor 221, the axial direction of the screw rod 222 is perpendicular to the swing rod body 213, and the movable part 212 of the swing rod 21 is sleeved on the screw rod 222 and is in threaded connection with the screw rod 222. Therefore, when the finger holder rotating motor 221 drives the screw 222 to rotate through the main shaft, the movable portion 212 of the swing link 21 can move along the axial direction of the screw 222, so that the swing link body 213 can drive the finger holder 1 to rotate around the axial direction thereof through the fixed portion 211. In addition, in order to fix the finger rest rotating motor 221, as shown in fig. 1 and 2, the finger rest rotation driving assembly 22 further includes: the finger rest rotating motor fixing seat 223, the finger rest rotating motor 221 is arranged in the motor fixing seat 223, and the finger rest rotating motor 221 can be fixed by means of the motor fixing seat 223.

Further, as shown in fig. 1 and 2, in some embodiments, the finger rest rotation driving mechanism 2 further includes: a first detection module 23 and a second detection module 24. Meanwhile, the first detection module 23 and the second detection module 24 are disposed opposite to each other along the rotation direction of the swing rod body 213, and, as shown in fig. 3, the first detection module 23, the second detection module 24 and the finger rest rotating motor 221 are all in communication connection with the main control module of the nail machine. In an actual application process, the first detecting module 23 is used for detecting the swing rod body 213 when the swing rod body 213 rotates in a direction away from the second detecting module 24, and outputting a first electrical signal to the main control module when the swing rod body 213 is detected; the second detecting module 24 is configured to detect the swing rod body 213 when the swing rod body 213 rotates in a direction away from the first detecting module 23, and output a second electrical signal to the main control module when the swing rod body 213 is detected. It should be noted that, in this embodiment, as shown in fig. 1 and fig. 2, both the first detection module 23 and the second detection module 24 are travel switches, so it is easy to see that when the swing rod body 213 drives the finger rest 1 to rotate to a preset angle in a direction away from the second detection module 24, the first detection module 23 can be directly triggered, so that the first detection module 23 directly outputs a first electrical signal to the main control module; when the swing rod body 213 drives the finger rest 1 to rotate to a predetermined angle in a direction away from the first detection module 23, the second detection module 24 can be directly triggered, so that the second detection module 24 directly outputs a second electrical signal to the main control module. When the main control module receives the first electrical signal or the second electrical signal, the finger rest rotating motor 221 can be directly controlled to stop working, so that the rotation angle of the swing rod 21 can be limited based on the existence of the first detection module 23 and the second detection module 24, and the damage of the finger caused by the overlarge rotation angle of the finger rest 1 when the finger rest 1 adjusts the printing angle of the finger is avoided.

In some embodiments, as shown in fig. 1 and 2, the finger rest mechanism of the present embodiment further includes: the first encoder 25 is sleeved on the main shaft of the finger support rotating motor 221, and as shown in fig. 3, the first encoder 25 is in communication connection with the main control module of the nail art machine, the first encoder 25 is used for detecting the rotation angle of the main shaft of the finger support rotating motor 221 in real time and uploading the detected rotation angle of the main shaft to the main control module in real time, so that the main control module can realize accurate control of the finger support rotating motor 221 according to the received rotation angle.

It should be noted that, in order to enable the limiting strip 41 and the air bag 42 to fix the finger, in the present embodiment, as shown in fig. 1 and fig. 2, the limiting strip 41 is bridged across two sides of the finger rest 1 along the direction of the groove width of the groove body 13, specifically, as shown in fig. 1 and fig. 2, two ends of the limiting strip 41 are both bent and extended towards the direction of the finger rest 1 to form a first bending portion 411 and a second bending portion 412 connected to the finger rest 1 respectively. And, along the groove width direction of cell body 13, first bending 411 and second bending 412 of spacing strip 41 can be dismantled with the both sides that indicate to hold in the palm 1 respectively and be connected, for example: the first bending portion 411 and the second bending portion 412 may be connected to the finger rest 1 by a snap connection. Of course, in practical applications, other connection manners, not only the connection manner of the buckle, may also be adopted between the first bending portion 411 and the second bending portion 412 and the finger rest 1, so that different limiting strips 41 may be selected to fix fingers according to the thickness of the fingers of different customers. In some embodiments, the position limiting bar 41 is far away from the fingertip positioning portion 132, that is, is disposed near the notch 131, so that the position limiting bar 41 can avoid the finger nail from being shielded after the finger is fixed by the position limiting bar 41, and the printing quality of the pattern can be further improved.

A second embodiment of the present invention relates to a nail art machine, as shown in fig. 4, including: the hand rest 5, the printing module (not shown), the hand rest lifting driving mechanism 6, the finger positioning device according to the first embodiment, and the main control module.

As shown in fig. 4, the hand rest 5 and the printing module (not shown) are disposed opposite to each other along a direction of a predetermined straight line, and the finger positioning device is disposed on a side of the hand rest 5 opposite to the printing module. And, hand rest lift actuating mechanism 6 is connected with hand rest 5, can be used to drive hand rest 5 through hand rest lift actuating mechanism 6 and carry out rectilinear motion for the print module.

In the present embodiment, as shown in fig. 8, the main control module is connected to the print module, the finger rest rotation driving mechanism 2, the image pickup module 3, and the hand rest elevation driving mechanism 6 in a communication manner. In practical application, the main control module is used for controlling the hand support lifting driving mechanism 6, so that the hand support lifting driving mechanism 6 can drive the hand support 5 to move to a printing position in the direction of the printing module, or the hand support lifting driving mechanism 6 can drive the hand support 5 to move to an initial position in the direction away from the printing module. And, after the hand rest 5 moved to be in the printing position, the host system still was used for according to the printing face that obtains, control printing module and print preset pattern on the printing face, print on the nail face of finger promptly.

Specifically, in the present embodiment, as shown in fig. 5, the hand rest 5 includes: a finger rest plate 51, a first positioning plate 52 and a second positioning plate 53. As shown in fig. 2, the finger rest plate 51 has an upper surface 511 and a lower surface 512 opposite to the upper surface 511, the first positioning plate 52 and the second positioning plate 53 are oppositely disposed on the finger rest plate 51, meanwhile, the first positioning plate 52 and the second positioning plate 53 are both vertically extended along the direction from the upper surface 511 to the lower surface 512, a side of the first positioning plate 52 facing away from the second positioning plate 53 is a first side surface 521, and a side of the second positioning plate 53 facing away from the first positioning plate 52 is a second side surface 531. As shown in fig. 5 and 6, at least one finger slot 54 is formed on each of the upper surface 511, the first side surface 521 and the second side surface 531, the finger slots 54 can be used to insert the finger holders 1, the finger holders 1 are oriented to the same side, and the finger holders 1 are rotatably connected to the hand holder 5, so that the finger holders 1 can rotate around the axial direction thereof. In the present embodiment, as shown in fig. 5, each of the finger rest plate 51, the first positioning plate 52 and the second positioning plate 53 further has a connection hole 56 into which the fixed portion 211 of the swing link 21 can enter, and each connection hole 56 is used for enabling the fixed portion 211 of the swing link 21 to drive the finger rest 1 connected to the fixed portion 211 to rotate around its axis when the finger rest rotation driving assembly 22 drives the movable portion 212 of the swing link 21.

Note that, in order to realize the linear motion of the hand rest 5 with respect to the image pickup module 3, in the present embodiment, as shown in fig. 4, the hand rest elevation drive mechanism 6 includes: support 61, hand rest lift drive assembly 62. Wherein, the support 61 supports and fixes the hand rest 5, and simultaneously, this support 61 includes: a support body 611 connected with the hand rest 5, and a lifting plate 612 connected with the support body 611. The supporting body 611 extends vertically away from the printing module, and the lifting plate 612 is disposed at an end of the supporting body 611 away from the hand rest 5. Next, as shown in fig. 4, the hand rest lifting driving assembly 62 is connected to the lifting plate 612, so that the hand rest lifting driving assembly 62 can be used to drive the bracket 61 and the hand rest 5 to perform linear motion relative to the printing module, and, as shown in fig. 8, the hand rest lifting driving assembly 62 is in communication connection with the main control module. Therefore, the hand rest lifting driving assembly 62 is controlled by the main control module, so that the hand rest lifting driving assembly 62 can directly drive the lifting plate 612, thereby realizing the linear motion of the whole bracket 61 and the hand rest 5 between the printing position and the initial position.

In addition, in the present embodiment, as shown in fig. 4, the hand rest elevation drive unit 62 includes: motor fixing plate 621, hand rest lift motor 622, lead screw 623. Wherein, the motor fixed plate 621 is parallel and relative lifter plate 612 sets up, and simultaneously, lifter plate 612 is located between motor fixed plate 621 and the hand rest 5, and hand rest lift motor 622 sets up in the one side that motor fixed plate 621 deviates from lifter plate 612. In addition, as shown in fig. 4, the axis direction of the rotating shaft of the hand rest lifting motor 622 is perpendicular to the lifting plate 62, and the hand rest lifting motor 622 is also in communication connection with the main control module. In addition, the screw 623 is coaxially fixed to the rotation shaft of the hand rest lifting motor 622. The motor fixing plate 621 is further provided with a shaft hole 6211 through which the screw 623 passes.

In addition, as shown in fig. 4, the guide column 624 is disposed on the motor fixing plate 621, and the guide column 624 is parallel to the screw 623, and at the same time, the lifting plate 612 is opened with a guide hole (not shown) corresponding to the guide column 624 for the guide column 624 to pass through, so that it is easy to see that the lifting plate 612 can slide linearly along the axial direction of the guide column 624 under the driving action of the hand-held lifting motor 622 and the screw 623 due to the guiding action of the guide column 624 on the lifting plate 612.

In addition, in order to improve the moving performance of the lifting plate 612 when moving along the axial direction of the screw 623, in the present embodiment, as shown in fig. 4, a bushing 613 is further provided on the side of the lifting plate 612 opposite to the motor fixing plate 621 and/or the side away from the motor fixing plate 621 along the axial direction of the guide column 624, and the bushing 613 is penetrated by the guide column 624 and slidably connected to the guide column 624, so that the moving performance of the lifting plate 612 along the axial direction of the screw 623 can be improved by the sliding fit of the bushing 613 and the guide column 624. In some embodiments, the sleeve 613 and the guide column 624 may together form a guide assembly, and the guide assembly may be provided in a plurality of numbers, so as to further improve the guiding performance of the lift plate 612 during movement relative to the print module.

In addition, as shown in fig. 4, in some preferred embodiments, the hand rest elevation driving mechanism 6 further includes: a third detection module 63, a fourth detection module 64, and a stop 65. The third detection module 63 and the fourth detection module 64 are oppositely disposed on the support body 611 along the axial direction of the guide column 624. In addition, as shown in fig. 8, the third detecting module 63, the fourth detecting module 64 and the hand rest lifting motor 622 are all in communication connection with the main control module of the nail art machine.

Specifically, as shown in fig. 4, the stopper 65 is fixed on the guide column 624 and located between the third detection module 63 and the fourth detection module 64. The third detection module 63 and the fourth detection module 64 are both used for detecting the stop 65 when the hand rest 5 moves linearly relative to the printing module 5. And, when the third detecting module 63 detects the block 65, it may output a third electrical signal to the main control module, and when the fourth detecting module 64 is further configured to output a fourth electrical signal to the main control module when detecting the block 65, and the main control module is further configured to control the hand rest lifting motor 622 to stop working when receiving the third electrical signal or the fourth electrical signal. It should be noted that, in this embodiment, as shown in fig. 4, both the third detection module 63 and the fourth detection module 64 are travel switches, so it is easy to see that, as shown in fig. 4 and fig. 8, when the hand rest lifting motor 622 drives the hand rest 5 to move to a preset position in a direction away from the fourth detection module 64 through the lead screw 623, the stopper 65 can directly trigger the third detection module 63, so that the third detection module 63 can directly output a third electrical signal to the main control module; when the hand rest lifting motor 622 drives the hand rest 5 to move to the preset position in the direction away from the third detection module 63 through the lead screw 623, the stopper 65 can directly trigger the fourth detection module 64, so that the fourth detection module 64 directly outputs a fourth electrical signal to the main control module. When the main control module receives the third electric signal or the fourth electric signal, the hand rest lifting motor 622 can be directly controlled to stop working, so that the movement stroke of the hand rest 5 can be limited based on the existence of the third detection module 63 and the fourth detection module 64, the movement stroke of the hand rest 5 is prevented from exceeding the maximum stroke, and the safety of the nail machine during operation is improved.

However, in the present embodiment, the hand rest elevation drive mechanism 6 further includes: and a second encoder (not shown) sleeved on the rotating shaft of the hand rest lifting motor 622, and as shown in fig. 8, the second encoder is further in communication connection with the main control module. The second encoder is used for detecting the rotation angle of the rotating shaft of the hand support lifting motor 622 in real time and uploading the detected rotation angle of the rotating shaft to the main control module in real time, so that the main control module can realize accurate control over the hand support rotating motor 622 according to the received rotation angle.

In some embodiments, as shown in fig. 6, the hand rest 5 further includes: and a rotating bracket 55 provided on the lower surface 512 of the finger rest plate 51, wherein the rotating bracket 55 is located between the first positioning plate 52 and the second positioning plate 53. Meanwhile, as shown in fig. 7, the nail art according to the present embodiment further includes: the hand rest rotation driving mechanism 7, and the hand rest rotation driving mechanism 7 is also connected to the rotation bracket 55. It can be seen that, in practical application, the rotating bracket 55 can be driven by the hand support rotating driving mechanism 7 to rotate the whole hand support 1 around the preset axis direction, and in the present embodiment, as can be seen from fig. 6 and 7, the preset axis is coaxial with the axis of the rotating bracket 55, so that the preset axis is located between the first positioning plate 52 and the second positioning plate 53 and is parallel to the first side surface 521 and the second side surface 531. Therefore, in practical use, the rotation bracket 55 of the hand rest 5 can be driven by the hand rest rotation driving mechanism 7 to rotate the entire hand rest 5 in the pre-retraction axis direction.

Specifically, in the present embodiment, in order to drive the hand rest 5 by the hand rest rotation drive mechanism 7, as shown in fig. 7, the hand rest rotation drive mechanism 7 includes: a connecting shaft 71 and a hand rest rotation driving assembly 72. The connecting shaft 71 is connected to the rotating bracket 55 along a predetermined axial direction, and the hand support rotation driving assembly 72 is connected to the connecting shaft 71, and as shown in fig. 7 and 8, the hand support rotation driving assembly 72 is further connected to the main control module in a communication manner. Therefore, the hand rest rotation driving assembly 72 can drive the connecting shaft 71 to rotate under the control of the main control module, and further drive the hand rest 5 to rotate. In the present embodiment, as shown in fig. 7, the hand rest rotation driving unit 72 includes: a hand rest rotating motor 721, a worm wheel 722 and a worm 723. The hand rest rotating motor 721 has a driving shaft (not shown), the hand rest rotating motor 721 is further in communication connection with the main control module, the worm wheel 722 is sleeved on the connecting shaft 71 and coaxially fixed with the connecting shaft 71, and the worm 723 is coaxially connected with the driving shaft and meshed with the worm wheel 722. Accordingly, the hand rest 5 can be rotated in the predetermined axial direction by the driving action of the hand rest rotating motor 721 and the meshing transmission between the worm wheel 722 and the worm 723. Of course, in practical applications, the hand rest 5 may also be rotated by other mechanisms, such as: the air cylinder is rotated, but the structure of the hand rest rotation driving assembly 72 is not particularly limited in this embodiment.

Further, in the present embodiment, preferably, in order to enable precise control of the rotation angle of the hand rest 5, as shown in fig. 7, the hand rest rotation driving mechanism 7 further includes: a stop collar 73, a fifth detection module 74 and a sixth detection module 75. As shown in fig. 7, the limiting ring 73 is sleeved on the connecting shaft 71 and coaxially fixed with the connecting shaft 71, and meanwhile, a part of the outer annular surface of the limiting ring 73 protrudes in a direction away from the inner annular surface to form a limiting protrusion 731. In addition, the fifth detecting module 74 and the sixth detecting module 75 are disposed opposite to the limiting ring 73 along a direction perpendicular to the preset axis, and the fifth detecting module 74 and the sixth detecting module 75 are configured to detect the limiting protrusion 731, wherein the fifth detecting module 74 is configured to detect the limiting protrusion 731 when the limiting ring 73 rotates in the forward direction along with the connecting shaft 71, and output a fifth electrical signal when the fifth detecting module 74 detects the limiting protrusion 731, and correspondingly, the sixth detecting module 75 is configured to detect the limiting protrusion 731 when the limiting ring 73 rotates in the reverse direction along with the connecting shaft 71, and output a sixth electrical signal when the sixth detecting module 75 detects the limiting protrusion 731. It should be noted that, in this embodiment, as shown in fig. 7, the detection direction of the fifth detection module 74 is perpendicular to the detection direction of the sixth detection module 75, and as shown in fig. 8, the fifth detection module 74 and the sixth detection module 75 are also connected to the main control module in a communication manner, and the main control module is configured to receive the fifth electrical signal and the sixth electrical signal, and when the main control module receives the fifth electrical signal or the sixth electrical signal, control the rotation motor 721 to stop working, and send a command to the rotation motor 721 for the next working, to drive the connection shaft 71 to rotate in the reverse direction.

As can be seen from fig. 7 and 8, the hand rest 5 of the present embodiment can drive the hand rest 5 to rotate within a range of 0 to 90 degrees by the fifth detection module 74 and the sixth detection module 75 respectively detecting the limit protrusions 731, so that the quick switching of the thumb and the other four fingers except the thumb of any palm during printing is satisfied. In addition, in the present embodiment, both the fifth detection module 74 and the sixth detection module 75 may employ rotation limit sensors, but in actual use, the fifth detection module 74 and the sixth detection module 75 may employ other detection modules, and in the present embodiment, the types of the fifth detection module 74 and the sixth detection module 75 are not specifically limited.

In addition, preferably, in some embodiments, the hand rest rotation driving assembly 72 further includes: a third encoder (not shown) sleeved on the driving shaft of the hand rest rotating motor 721 is connected to the main control module, and, as shown in fig. 8, the third encoder is in communication connection with the main control module, and is configured to detect a rotation angle of the driving shaft of the hand rest rotating motor 721 in real time, and upload the detected rotation angle of the driving shaft to the main control module in real time, so that the main control module can implement accurate control of the hand rest rotating motor 721 according to the received rotation angle.

It should be noted that, as can be seen from fig. 5 and 6, in the nail art according to the present embodiment, four finger rests 1 are embedded in the upper surface 511 of the hand rest 5, and one finger rest 1 is embedded in each of the first side surface 521 and the second side surface 531, so that when the nail art is used for nail art, any palm can be placed at a time, and the five fingers can be clamped and fixed by the four finger rests 1 on the upper surface 511 and the finger rests 1 on the first side surface 521 or the finger rests 1 on the second side surface 531. In addition, the nail art according to the present embodiment further includes: the hand support rotary driving mechanism 7 connected with the hand support 5 can drive the hand support 5 to rotate around the preset axis direction through the hand support rotary driving mechanism 7, therefore, after the pattern printing of the nails of the other four fingers except the thumb is finished, the hand support rotary driving mechanism 7 is controlled by the main control module, so that the hand support rotary driving mechanism 7 can drive the hand support 5 to overturn the first side surface 521 or the second side surface 531 to the position opposite to the printing module, and the nail beautifying machine can print the pattern of the nail of the left thumb or the nail of the right thumb, therefore, the steps of putting and positioning the fingers of a customer back and forth are omitted, and the operation efficiency is improved.

A third embodiment of the present invention relates to a finger positioning method applied to a nail machine, as shown in fig. 10, including: the finger support device comprises a finger support 1 for supporting fingers, a clamping mechanism 4 for clamping and fixing the fingers, a finger support rotation driving mechanism 2 for driving the finger support 1 to rotate around the axis direction of the finger support, a camera module 3 for acquiring images of the finger support 1 and a main control module. And, with reference to fig. 11, the main control module is respectively connected to the clamping mechanism 4, the finger rest rotation driving mechanism 2 and the camera module 3 in a communication manner.

As shown in fig. 9, the finger positioning method according to the present embodiment includes the steps of:

in step 910, the main control module controls the clamping mechanism 4 to clamp the finger placed in the finger rest 1.

And step 920, the main control module controls the camera module 3 to acquire the image of the finger rest 1.

Step 930, the main control module determines whether the nail surface of the finger in the image deflects according to the obtained image.

And 940, after the main control module judges that the nail surface deflects, the main control module controls the finger support rotary driving mechanism 2 to enable the finger support rotary driving mechanism 2 to drive the finger support 1 to rotate around the axis of the finger support in the direction opposite to the nail surface deflection until the nail surface deflection is eliminated.

And step 950, after the main control module determines that the nail surface is not deflected, the main control module takes the current nail surface as a printing surface.

It can be seen from the above that, because the nail machine of the embodiment can support the finger by means of the finger holder 1, and simultaneously, under the control of the main control module of the nail machine, the clamping mechanism 4 can clamp and fix the finger placed on the finger holder 1, and the camera module 3 can acquire the image of the finger holder, so that the main control module can judge whether the nail surface of the finger in the finger holder 1 deflects according to the image acquired by the camera module 3, and after the deflection is judged, the deflection of the nail surface can be eliminated by controlling the finger holder rotary driving mechanism 2 to drive the finger holder 1 to rotate around the axis direction thereof, so that the printing module of the nail machine can accurately print the preset pattern on the nail surface, and further the printing quality can be improved.

In addition, it is worth mentioning that, in the step of determining whether the nail surface of the finger in the image deflects according to the obtained image, that is, step 830 specifically includes:

and the main control module acquires the left boundary and the right boundary of the finger nail in the image according to the acquired image.

The main control module calculates the vertical distance between the left side boundary and the right side boundary of the finger nail to a preset plane respectively.

And if the vertical distance from the left boundary to the preset plane is equal to the vertical distance from the right boundary to the preset plane, the main control module judges that the finger in the image is not deflected.

And if the vertical distance from the left side boundary to the preset plane is larger or smaller than the vertical distance from the right side boundary to the preset plane, the main control module judges that the finger in the image deflects.

Therefore, the finger positioning method of the embodiment determines whether the nail surface deflects by calculating the vertical distance between the left side boundary and the right side boundary of the nail surface and the preset plane respectively, and after the nail surface deflects, the main control module effectively controls the finger support rotation driving mechanism 2, so that the purpose of correcting the nail surface can be effectively realized.

Note that this embodiment is an example of the finger positioning method corresponding to the first embodiment, and can be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.

A fourth embodiment of the present invention relates to a nail art method applied to a nail art machine, as shown in fig. 13 and 14, including: the device comprises a hand support 5, a finger support 1 arranged on the hand support 5 and used for supporting fingers, a clamping mechanism 4 used for clamping and fixing the fingers, a printing module arranged opposite to the hand support 5, a hand support lifting driving mechanism 6 used for driving the hand support 5 to do linear motion relative to the printing module, a finger support rotating driving mechanism 2 used for driving the finger support 1 to rotate around the axis direction of the finger support, a camera module 3 used for acquiring images of the finger support 1 and a main control module.

As shown in fig. 15, the clamping mechanism 4, the hand rest lifting drive mechanism 6, the finger rest rotation drive mechanism 2, the camera module 3 and the printing module are all in communication connection with the main control module. As shown in fig. 12, the nail art method according to the present embodiment includes the steps of:

step 1210, the main control module controls the clamping mechanism 4 to clamp the finger placed in the finger rest 1.

In step 1220, the main control module controls the hand rest lifting driving mechanism 6, so that the hand rest lifting driving mechanism 6 drives the hand rest 5 to move toward the printing module 3.

In step 1230, when the hand rest 5 moves to the printing position, the main control module controls the hand rest lifting driving mechanism 6 to stop, and controls the camera module 3 to acquire the image of the finger rest 1.

Step 1240, the main control module judges whether the nail surface of the finger in the image deflects according to the obtained image.

Step 1250, after the main control module determines that the nail surface deflects, the main control module controls the finger holder rotation driving mechanism 2, so that the finger holder rotation driving mechanism 2 drives the finger holder 1 to rotate around the axis thereof in the direction opposite to the nail surface deflection until the nail surface deflection is eliminated.

And step 1260, after the main control module judges that the nail surface does not deflect, the main control module controls the finger holder rotation driving mechanism 2 to stop moving, and the current nail surface is used as a printing surface.

In step 1270, the main control module controls the printing module to print the preset pattern on the printing surface.

In step 1280, after the printing module finishes printing, the main control module controls the hand rest lifting driving mechanism 6, so that the hand rest lifting driving mechanism 6 drives the hand rest 5 to move in the direction away from the printing module.

And step 1290, when the hand support moves to the initial position, the main control module controls the finger support rotation driving mechanism 2 to stop moving and controls the clamping mechanism 4 to loosen the fingers.

Further, it is worth mentioning that, as shown in fig. 15, the hand rest 5 has an upper surface 511 opposed to the printing module, a first side surface 521 and a second side surface 531 provided perpendicular to the upper surface 511, the first side surface 521 and the second side surface 531 are opposed to each other, and the finger rest 1 and the finger rest rotation drive mechanism 2 are provided in plural, equal in number, and uniquely corresponding thereto. Furthermore, at least one finger rest 1 is embedded in each of the upper surface 511, the first side surface 521 and the second side surface 531, and as shown in fig. 15, the nail art further includes: the hand support rotation driving mechanism 7 is connected to the hand support 5, and as shown in fig. 16, the hand support rotation driving mechanism 7 is in communication connection with the main control module, the hand support rotation driving mechanism 7 is used for driving the hand support 5 to rotate around a preset axis, and the preset axis is located between the first side surface 521 and the second side surface 531 and is parallel to the first side surface 521 and the second side surface 531.

Secondly, before the master control module controls the hand rest lifting driving mechanism 6 to make the hand rest lifting driving mechanism 6 drive the hand rest 5 to move towards the direction of the printing module, the method further comprises the following steps:

in step 1211, the main control module obtains the position of the finger rest 1 for fixing the finger to be manicured.

In step 1212, the main control module determines whether the finger rest 1 for fixing the finger to be manicured is located on a side of the current hand rest 5 opposite to the printing module.

Step 1213, if the master control module determines that the current finger rest 5 does not have the finger rest 1 for fixing the finger to be manicured on one side of the printing module, the master control module controls the finger rest rotation driving mechanism 7 to drive the finger rest 5 to rotate clockwise or counterclockwise by a preset angle according to the acquired positions of the rest finger rests 1, so that the side of the finger rest 5 having the finger rest 1 for fixing the finger to be manicured is opposite to the printing module; if the main control module determines that the side of the current hand rest 5 opposite to the printing module does not have the finger rest 1 for fixing the finger to be manicured, the main control module continues to execute step 1220.

In addition, since the hand rest 5 of the present embodiment has the upper surface 511, the first side surface 521 and the second side surface 531, and the finger rests 1 are the upper surface 511, the first side surface 521 and the second side surface 531, when the hand rest rotation driving mechanism 7 drives the hand rest 5 so that the upper surface 511, the first side surface 521 or the second side surface 531 of the hand rest 5 is located opposite to the printing module, the main control module may calculate the vertical distance between the boundary of the two sides of the nail surface of the finger to be manicured to the preset plane by using the upper surface 511, the first side surface 521 or the second side surface 531 as the preset plane.

As is apparent from the above description, the present embodiment is an example of the nail art method corresponding to the second embodiment, and can be implemented in cooperation with the second embodiment. The related technical details mentioned in the second embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the second embodiment.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims

1. A finger positioning device, comprising:

a finger rest for supporting a finger;

the camera module is used for acquiring the image of the finger rest;

2. The finger locator device of claim 1 wherein the finger rest; having a top side, a bottom side opposite the top side; the finger positioning device is characterized in that a groove body for placing fingers is formed in the top side, the groove body extends along the length direction of the groove, so that a notch is formed at one end of the finger support along the length direction of the groove, and a fingertip positioning part opposite to the notch is formed at the other end of the finger support.

3. The finger positioning device of claim 2, wherein said finger rest rotation drive mechanism comprises:

4. The finger positioning device of claim 3, wherein said rocker further comprises: the swing rod body is connected with the fixed part and the movable part and is vertical to the bottom side of the finger rest or parallel to the bottom side of the finger rest;

the finger rest rotation driving assembly includes: the finger support rotating motor and the screw rod are coaxially connected with the main shaft of the finger support rotating motor, the axis direction of the screw rod is perpendicular to the oscillating bar body, and the movable part of the oscillating bar is sleeved on the screw rod and is in threaded connection with the screw rod.

5. The finger positioning device of claim 4, wherein said finger rest rotation drive mechanism further comprises:

6. The finger positioning device of claim 5, wherein said finger rest rotation drive mechanism further comprises:

the first encoder is sleeved on a main shaft of the finger support rotating motor and is in communication connection with the main control module;

7. The finger positioning device of claim 2, wherein said clamping mechanism comprises:

a stop strip disposed opposite the top side of the finger rest;

8. A nail machine, comprising:

the finger positioning device of any one of claims 1 to 7, disposed on a side of the hand rest opposite the printing module;

the hand support lifting driving mechanism is connected with the hand support and is used for driving the hand support to linearly move relative to the printing module;

the main control module is respectively in communication connection with the printing module, the finger rest rotating driving mechanism, the camera module and the hand rest lifting driving mechanism;

the main control module is used for controlling the hand rest lifting driving mechanism to enable the hand rest lifting driving mechanism to drive the hand rest to move to a printing position towards the direction of the printing module, or enable the hand rest lifting driving mechanism to drive the hand rest to move to an initial position towards a direction far away from the printing module;

and after the hand rest moves to the printing position, the main control module is also used for controlling the printing module to print a preset pattern on the printing surface according to the obtained printing surface.

9. The nail machine of claim 8, wherein the hand rest elevation drive mechanism comprises:

the hand rest lifting driving assembly is connected with the lifting plate and used for driving the support and the hand rest to do linear motion relative to the printing module;

the hand support lifting driving assembly is in communication connection with the main control module.

10. The nail machine of claim 9, wherein the hand rest lift drive assembly comprises:

11. The nail machine of claim 10, wherein the hand rest lift drive mechanism further comprises:

12. The nail machine of claim 10, wherein the hand rest lift drive mechanism further comprises:

the second encoder is used for detecting the rotation angle of the rotating shaft of the hand support rotating motor in real time and uploading the detected rotation angle of the rotating shaft to the main control module in real time.

13. The nail machine of claim 8, further comprising: the hand rest rotary driving mechanism, just the hand rest includes:

14. The nail machine of claim 13, wherein the hand rest rotational drive mechanism comprises:

15. The nail machine of claim 14, wherein the hand rest rotational drive mechanism further comprises:

a fifth detection module; the limiting ring is arranged opposite to the limiting ring along the direction vertical to the preset axis; the fifth detection module is used for detecting the limiting bulge when the limiting ring rotates in the forward direction along with the connecting shaft, and is also used for outputting a fifth electric signal when the limiting bulge is detected;

the sixth detection module is arranged opposite to the limiting ring along the direction perpendicular to the preset axis; the sixth detection module is used for detecting the limiting bulge when the limiting ring rotates reversely along with the connecting shaft, and is also used for outputting a sixth electric signal when the limiting bulge is detected;

the detection direction of the fifth detection module is perpendicular to that of the sixth detection module, and the fifth detection module and the sixth detection module are both in communication connection with the main control module;

16. The nail machine of claim 14, wherein the hand rest rotary drive assembly comprises:

the worm wheel is coaxially fixed with the connecting shaft;

17. The nail machine of claim 16, wherein the hand rest rotary drive assembly further comprises:

18. A finger positioning method is applied to a nail machine, and the nail machine comprises: the device comprises a finger support for supporting fingers, a clamping mechanism for clamping and fixing the fingers, a finger support rotation driving mechanism for driving the finger support to rotate around the axis direction of the finger support, a camera module for acquiring images of the finger support and a main control module;

after the main control module judges that the nail surface does not deflect, the main control module takes the current nail surface as a printing surface.

19. The finger positioning method according to claim 18, wherein the step of determining whether the nail surface of the finger in the image deflects according to the obtained image by the main control module specifically comprises:

20. A nail art method, characterized in that, is applied to a nail art machine, the nail art machine includes: the finger support comprises a hand support, a finger support arranged on the hand support and used for supporting fingers, a clamping mechanism used for clamping and fixing the fingers, a printing module arranged opposite to the hand support, a hand support lifting driving mechanism used for driving the hand support to do linear motion relative to the printing module, a finger support rotating driving mechanism used for driving the finger support to rotate around the axis direction of the finger support, a camera module used for acquiring images of the finger support and a main control module;

the nail beautifying method comprises the following steps of:

if the main control module judges that the nail surface deflects, the main control module controls the finger support rotary driving mechanism to enable the finger support rotary driving mechanism to drive the finger support to rotate around the axis of the finger support in the direction opposite to the nail surface deflection direction;

when the deflection of the nail surface is eliminated, the main control module controls the finger rest rotating driving mechanism to stop moving, and the current nail surface is used as a printing surface;

21. The nail art of claim 20, wherein the hand rest has an upper surface opposite the print module, a first side and a second side disposed perpendicular to the upper surface, the first side and the second side being opposite each other; the finger supports and the finger support rotary driving mechanisms are respectively provided with a plurality of finger supports, the number of the finger supports is the same, and the finger supports are only corresponding to each other;