Card-reading drawing robot

Abstract

The utility model relates to the technical field of card reading and drawing robots, in particular to a card reading and drawing robot. The card reading and drawing robot comprises a shell, a driving mechanism and a drawing arm mechanism. The driving mechanism is installed in the shell, the drawing arm mechanism is used for installing a drawing pen, and the driving mechanism is used for driving the drawing arm mechanism to execute drawing actions. The drawing arm mechanism comprises a first connecting arm, a second connecting arm and a sleeving piece; a first sleeving cavity and a second sleeving cavity are formed in the two ends of the sleeving piece correspondingly. The first end of the first connecting arm is inserted into the first sleeving cavity, and the second end of the first connecting arm is connected with the driving mechanism; and the first end of the second connecting arm is inserted into the second sleeving cavity. The first end of the first connecting arm is provided with a first magnetic attraction piece, the first end of the second connecting arm is provided with a second magnetic attraction piece, and the first magnetic attraction piece and the second magnetic attraction piece are magnetically attracted.

Description

A card-reading drawing robot Technical Field

[0001] This utility model relates to the field of card reading and drawing robot technology, and in particular to a card reading and drawing robot. Background Technology

[0002] A card-reading drawing robot is a robot capable of drawing by reading information from cards. These robots are typically equipped with corresponding cards. They acquire drawing information by scanning the image recognition code on the card, recognizing the image information on the card through a camera, or recognizing the image information through an NFC chip. The robot then uses this acquired image information to depict the corresponding pattern on the card.

[0003] Card-reading drawing robots are primarily designed for children, using fun methods to stimulate their interest in drawing, help them learn drawing techniques, and improve their drawing abilities. In the education field, card-reading drawing robots can serve as an auxiliary tool to help teachers conduct drawing lessons and enrich teaching content.

[0004] Card-reading drawing robots typically use a flexible, rotating connecting arm to hold a paintbrush and perform drawing actions. Specifically, the connecting arm of the card-reading drawing robot is attached to a spherical connector via a C-shaped latch. Although the C-shaped latch and the spherical connector are further connected by magnetic attraction, the connection is still not secure enough. Summary of the Invention

[0005] This utility model provides a card-reading drawing robot to solve the problem that although the connecting arm of the card-reading drawing robot is connected to the spherical connecting part by a C-shaped bayonet, the connection is still not strong enough.

[0006] This utility model discloses a card-reading drawing robot, including a shell, a drive mechanism, and a drawing arm mechanism; the drive mechanism is installed in the shell, the drawing arm mechanism is used to install a drawing pen, and the drive mechanism is used to drive the drawing arm mechanism to perform drawing actions.

[0007] The drawing arm mechanism includes a first connecting arm, a second connecting arm, and a socket; the socket has a first socket cavity and a second socket cavity at its two ends respectively; the first end of the first connecting arm is inserted into the first socket cavity, and the second end of the first connecting arm is connected to the drive mechanism; the first end of the second connecting arm is inserted into the second socket cavity.

[0008] The first end of the first connecting arm is provided with a first magnetic attractor, and the first end of the second connecting arm is provided with a second magnetic attractor. The first magnetic attractor and the second magnetic attractor are magnetically attracted to each other.

[0009] Optionally, the first end of the first connecting arm is provided with a first mounting cavity, and the first magnetic member is installed in the first mounting cavity; the first end of the second connecting arm is provided with a second mounting cavity, and the second magnetic member is installed in the second mounting cavity;

[0010] The first mounting cavity is detachably inserted into the first socket cavity, and the second mounting cavity is fixedly inserted into the second socket cavity.

[0011] Optionally, the drawing arm mechanism also includes a socket cover, through which the first end of the first connecting arm is inserted into the first socket cavity.

[0012] Optionally, two oppositely shaped anti-mistake ribs are provided on the outer peripheral wall of the socket cover, and two anti-mistake grooves corresponding to the two anti-mistake ribs are provided on the peripheral wall of the first socket cavity; and / or

[0013] The socket has a partition plate that separates the first socket cavity and the second socket cavity. The bottom of the socket cover is provided with a limiting protrusion. The partition plate is provided with a first limiting groove or limiting hole corresponding to the limiting protrusion. The limiting protrusion is inserted into the first limiting groove or limiting hole.

[0014] Optionally, the outer peripheral wall of the second mounting cavity is provided with a second limiting groove along the axial direction, and the inner peripheral wall of the second sleeve cavity is provided with a limiting rib along the axial direction, the limiting rib being embedded in the second limiting groove; and / or

[0015] The outer peripheral wall of the second mounting cavity is provided with a first snap-fit ​​groove along the circumferential direction, and the inner peripheral wall of the second socket cavity is provided with a first snap-fit ​​protrusion along the circumferential direction. The first snap-fit ​​protrusion snaps into the first snap-fit ​​groove.

[0016] Optionally, the card-reading drawing robot also includes a base and an inner frame that can be lifted and installed inside the housing, with the inner frame covering the base to form a transmission cavity;

[0017] The drive mechanism includes a lifting drive assembly and a rotating drive component. The lifting drive assembly is connected to the base to drive the base to lift and lower. The rotating drive component is installed at the bottom of the base.

[0018] Inside the transmission cavity, the base is recessed with a mounting groove. The drive shaft of the rotating drive component extends into the transmission cavity through the mounting groove. The second end of the first connecting arm is mounted on the drive shaft of the rotating drive component and is located at the mounting groove.

[0019] Optionally, a torsion spring is fitted on the second end of the first connecting arm, with one end of the torsion spring fixed in the mounting groove and the other end fixed on the first connecting arm.

[0020] Optionally, a magnet is installed on the second end of the first connecting arm away from the mounting groove, and a Hall angle sensor is installed on the inner frame corresponding to the magnet. The Hall angle sensor is used to detect the rotation angle of the first connecting arm.

[0021] Optionally, the housing includes an upper shell and a lower shell that are fitted together, and the card-reading drawing robot also includes a top mount; inside the housing, the top mount is installed inside the upper shell and covers the inner frame;

[0022] The main control circuit board and battery are installed on the top base. The main control circuit board is electrically connected to the battery, the lifting drive assembly and the rotation drive component.

[0023] Optionally, a visual recognition module is also provided on the shell. The visual recognition module is used to identify objects within the visual range, and the card reading and painting robot performs painting actions based on the visual recognition information.

[0024] The beneficial effects of the card-reading drawing robot provided in this embodiment are as follows: The first connecting arm and the second connecting arm of the card-reading drawing robot are connected by a socket, wherein a first socket cavity and a second socket cavity are respectively provided at both ends of the socket; the first end of the first connecting arm is inserted into the first socket cavity, and the first end of the second connecting arm is inserted into the second socket cavity. Furthermore, a first magnetic suction member is provided at the first end of the first connecting arm, and a second magnetic suction member is provided at the first end of the second connecting arm, achieving magnetic attraction between the first and second magnetic suction members. Thus, since the first end of the first connecting arm is inserted into the first socket cavity, and the first end of the second connecting arm is inserted into the second socket cavity, the installation is more secure compared to a C-shaped snap-fit ​​connection, and the magnetic attraction between the first and second magnetic suction members further improves the stability between the first and second connecting arms. Attached Figure Description

[0025] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0026] Figure 1 is a schematic diagram of the card-reading drawing robot according to an embodiment of the present invention;

[0027] Figure 2 is an exploded view of the card-reading drawing robot according to an embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of the drawing arm mechanism according to an embodiment of the present invention;

[0029] Figure 4 is an exploded view of the inner frame and painting arm mechanism of this utility model embodiment;

[0030] Figure 5 is an exploded view of the drawing arm mechanism according to an embodiment of the present invention;

[0031] Figure 6 is another exploded view of the painting arm mechanism of this utility model embodiment;

[0032] Figure 7 is a schematic diagram of the socket of this utility model embodiment;

[0033] Figure 8 is another schematic diagram of the socket of this utility model embodiment;

[0034] Figure 9 is a schematic diagram of the top seat according to an embodiment of the present invention;

[0035] Figure 10 is a schematic diagram of the sleeve cover according to an embodiment of the present utility model;

[0036] Figure 11 is a schematic diagram of the driving mechanism according to an embodiment of the present invention;

[0037] Figure 12 is a schematic diagram of the lower shell of an embodiment of this utility model.

[0038] The labels for the attached figures are as follows:

[0039] 1. Housing; 11. Arm extension opening; 12. Upper housing; 121. Snap-in slot; 13. Lower housing; 2. Drive mechanism; 21. Lifting drive assembly; 211. Motor; 212. Gear; 213. Transmission support component; 2131. Support plate; 2132. Transmission connecting block; 21321. Meshing gear; 22. Rotation drive component; 3. Painting arm mechanism; 31. First connecting arm; 311. First mounting cavity; 3111. Second snap-in groove; 312. Snap-in hole; 32. Second connecting arm; 321. Second mounting cavity; 3211. Second limiting groove; 3212. First snap-in groove; 33. Socket; 331. First socket cavity; 3311. Anti-foolproof groove; 3 32. Second socket cavity; 3321. Limiting rib; 3322. First buckle protrusion; 333. Divider plate; 3331. Limiting hole; 34. First magnetic suction component; 35. Second magnetic suction component; 36. Socket cover; 361. Anti-foolproof rib; 362. Limiting protrusion; 363. Second buckle protrusion; 37. Third connecting arm; 38. Pen sleeve; 4. Drawing pen; 5. Base; 51. Mounting groove; 52. Guide hole; 6. Inner frame; 7. Transmission inner cavity; 8. Hall angle sensor; 9. Top seat; 10. Main control circuit board; 20. Battery; 40. Guide column; 50. Recognition circuit board; 60. Card; 70. Visual recognition module placement; 701. Camera. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0041] This utility model provides a card-reading drawing robot, as shown in Figures 1 to 8. The card-reading drawing robot includes a housing 1, a drive mechanism 2, and a drawing arm mechanism 3. The drive mechanism 2 is installed in the housing 1, and the drawing arm mechanism 3 is used to install a drawing pen 4. The drive mechanism 2 is used to drive the drawing arm mechanism 3 to perform drawing actions.

[0042] The drawing arm mechanism 3 includes a first connecting arm 31, a second connecting arm 32, and a socket 33. The socket 33 has a first socket cavity 331 and a second socket cavity 332 at its two ends. The first end of the first connecting arm 31 is inserted into the first socket cavity 331, and the second end of the first connecting arm 31 is connected to the drive mechanism 2. The first end of the second connecting arm 32 is inserted into the second socket cavity 332. The first end of the first connecting arm 31 is provided with a first magnetic attractor 34, and the first end of the second connecting arm 32 is provided with a second magnetic attractor 35. The first magnetic attractor 34 and the second magnetic attractor 35 are magnetically attracted to each other.

[0043] The first connecting arm 31 and the second connecting arm 32 of this utility model card-reading drawing robot are connected by a socket 33. The socket 33 has a first socket cavity 331 and a second socket cavity 332 at its two ends. The first end of the first connecting arm 31 is inserted into the first socket cavity 331, and the first end of the second connecting arm 32 is inserted into the second socket cavity 332. Furthermore, a first magnetic suction member 34 is provided at the first end of the first connecting arm 31, and a second magnetic suction member 35 is provided at the first end of the second connecting arm 32. The first magnetic suction member 34 and the second magnetic suction member 35 are magnetically attracted to each other. Thus, because the first end of the first connecting arm 31 is inserted into the first socket cavity 331, and the first end of the second connecting arm 32 is inserted into the second socket cavity 332, the installation is more secure than a C-shaped snap-fit ​​connection. The magnetic attraction between the first magnetic suction member 34 and the second magnetic suction member 35 further enhances the stability between the first connecting arm 31 and the second connecting arm 32.

[0044] Specifically, the first end of the first connecting arm 31 is provided with a first mounting cavity 311, and the first magnetic attractor 34 is installed in the first mounting cavity 311; the first end of the second connecting arm 32 is provided with a second mounting cavity 321, and the second magnetic attractor 35 is installed in the second mounting cavity 321. The first mounting cavity 311 and the second mounting cavity 321 facilitate the installation and fixation of the first magnetic attractor 34 and the second magnetic attractor 35, improving the ease and firmness of installation. Specifically, the first magnetic attractor 34 and the second magnetic attractor 35 can be glued to the first mounting cavity 311 and the second mounting cavity 321. For the first magnetic attractor 34 and the second magnetic attractor 35, both can be magnets for magnetic attraction, or one can be a magnet and the other can be a metal that can be magnetically attracted to a magnet, such as an iron sheet.

[0045] The first mounting cavity 311 is detachably inserted into the first socket cavity 331, and the second mounting cavity 321 is fixedly inserted into the second socket cavity 332. In this way, the second connecting arm 32 is fixedly connected to the socket 33, while the first connecting arm 31 is detachable from the socket 33, facilitating the assembly and disassembly of the second connecting arm 32, and simplifying assembly during production and use as well as disassembly during packaging and transportation. Due to the presence of the first magnetic suction member 34 and the second magnetic suction member 35, the first mounting cavity 311 can be detachably connected when inserted into the first socket cavity 331. Regarding the fixed connection between the second connecting arm 32 and the socket 33, in one optional embodiment, the second mounting cavity 321 can be directly glued to the second socket cavity 332; in another optional embodiment, the outer peripheral wall of the second mounting cavity 321 is provided with a first snap-fit ​​groove 3212 along the circumferential direction, and the inner peripheral wall of the second socket cavity 332 is provided with a first snap-fit ​​protrusion 3322 along the circumferential direction. The first snap-fit ​​protrusion 3322 snaps into the first snap-fit ​​groove 3212, thereby realizing the fixed connection between the second connecting arm 32 and the socket 33.

[0046] Specifically, the drawing arm mechanism 3 also includes a sleeve cover 36, which is disposed on the first mounting cavity 311. The first end of the first connecting arm 31 is inserted into the first mounting cavity 331 through the sleeve cover 36. The sleeve cover 36 can further cover the first mounting cavity 311 to prevent the first magnetic member 34 from detaching from the first mounting cavity 311. Similarly, in an optional embodiment, the sleeve cover 36 can also be directly glued to the first mounting cavity 311, or in another optional embodiment, the outer peripheral wall of the first mounting cavity 311 is provided with a second snap-fit ​​groove 3111 along the circumferential direction, and the inner peripheral wall of the sleeve cover 36 is provided with a second snap-fit ​​protrusion 363 along the circumferential direction. The second snap-fit ​​protrusion 363 snaps into the second snap-fit ​​groove 3111 to realize the installation and fixation of the sleeve cover 36.

[0047] Referring to Figures 8 and 10, two oppositely shaped anti-misalignment ribs 361 are provided on the outer peripheral wall of the socket cover 36. The peripheral wall of the first socket cavity 331 has two anti-misalignment grooves 3311 corresponding to the two anti-misalignment ribs 361. The corresponding cooperation of the two anti-misalignment ribs 361 and the two anti-misalignment grooves 3311 ensures the correct installation of the socket cover 36 and the first socket cavity 331. Simultaneously, the limiting effect of the anti-misalignment ribs 361 and the anti-misalignment grooves 3311 improves the connection stability between the socket cover 36 and the first socket cavity 331.

[0048] Specifically, of the two anti-mistake ribs 361, one anti-mistake rib 361 has a longer axial extension than the other anti-mistake rib 361, while the shorter anti-mistake rib 361 has a higher radial height than the longer anti-mistake rib 361. Correspondingly, the two anti-mistake grooves 3311 are adapted to accommodate the two anti-mistake ribs 361, one anti-mistake groove 3311 is a groove that does not penetrate the peripheral wall of the first sleeve cavity 331, and the other anti-mistake groove 3311 is an open groove that penetrates the peripheral wall of the first sleeve cavity 331.

[0049] Furthermore, the socket 33 has a partition plate 333 separating the first socket cavity 331 and the second socket cavity 332. The bottom of the socket cover 36 is provided with a limiting protrusion 362. The partition plate 333 has a first limiting groove or limiting hole 3331 corresponding to the limiting protrusion 362, and the limiting protrusion 362 is inserted into the first limiting groove or limiting hole 3331. Through the cooperation of the limiting protrusion 362 and the first limiting groove or limiting hole 3331, the connection between the socket cover 36 and the socket 33 can be further limited, improving connection stability. Specifically, there are two limiting protrusions 362, and two corresponding first limiting grooves or limiting holes 3331.

[0050] Furthermore, the outer peripheral wall of the second mounting cavity 321 is provided with a second limiting groove 3211 along the axial direction, and the inner peripheral wall of the second sleeve cavity 332 is provided with a limiting rib 3321 along the axial direction, the limiting rib 3321 being embedded in the second limiting groove 3211. The cooperation between the second limiting groove 3211 and the limiting rib 3321 can prevent the rotation of the second mounting cavity 321 and the second sleeve cavity 332, improving installation stability.

[0051] Furthermore, the drawing arm mechanism 3 also includes a third connecting arm 37 and a pen sleeve 38. One end of the third connecting arm 37 is rotatably connected to the second connecting arm 32 via a pivot, and the other end is rotatably fitted onto the pen sleeve 38, which is used to insert the drawing pen 4. The pen sleeve 38 is located at the front of the housing 1, and the second connecting arm 32 is bent towards the front of the housing 1.

[0052] Specifically, there are two sets of first connecting arms 31, second connecting arms 32, and third connecting arms 37. One set of first connecting arms 31, second connecting arms 32, and third connecting arms 37 is located on the left side of housing 1, and the other set of first connecting arms 31, second connecting arms 32, and third connecting arms 37 is located on the right side of housing 1. Both third connecting arms 37 are rotatably sleeved on the pen sleeve 38, driving the drawing pen 4 to perform drawing actions.

[0053] Furthermore, the card-reading drawing robot also includes a base 5 and an inner frame 6 that can be lifted and installed inside the housing 1. The inner frame 6 covers the base 5 to form a transmission cavity 7. The drive mechanism 2 includes a lifting drive assembly 21 and a rotation drive component 22. The lifting drive assembly 21 is connected to the base 5 to drive the base 5 to lift and lower. The rotation drive component 22 is installed at the bottom of the base 5.

[0054] Inside the transmission cavity 7, the base 5 is recessed with a mounting groove 51. The drive shaft of the rotating drive component 22 passes through the mounting groove 51 and extends into the transmission cavity 7. The second end of the first connecting arm 31 is mounted on the drive shaft of the rotating drive component 22 and is located at the mounting groove 51. The side wall of the housing 1 is provided with an arm extension opening 11, and the first connecting arm 31 extends out from the arm extension opening 11.

[0055] As shown in Figure 11, the base 5 is raised and lowered by the lifting drive assembly 21, which in turn raises and lowers the entire drawing arm mechanism 3, facilitating the execution of drawing actions. The recessed mounting groove 51 on the base 5 reduces the space requirements of the transmission cavity 7. The rotation drive component 22 is a stepper motor, which is mounted on the bottom of the base 5 with screws. Specifically, there are two stepper motors, each connected to the second end of one of the two first connecting arms 31. When the stepper motors rotate, they drive the first connecting arms 31 to rotate. The first connecting arms 31 then drive the drawing pen 4 to perform drawing actions via the second connecting arm 32, the third connecting arm 37, and the pen sleeve 38. Since the second connecting arm 32, the third connecting arm 37, and the pen sleeve 38 are all rotatably connected, the drawing arm mechanism 3 can perform drawing actions flexibly and easily.

[0056] The lifting drive assembly 21 includes a motor 211, a gear 212, and a transmission support 213. The motor 211 is installed in the housing 1, and the gear 212 is mounted on the drive shaft of the motor 211. The transmission support 213 includes a support plate 2131 and a transmission connecting block 2132 connected to the bottom of the support plate 2131. The support plate 2131 is installed on the bottom of the base 5 by screws. The transmission connecting block 2132 has multiple meshing teeth 21321 arranged axially, and the gear 212 meshes with the meshing teeth 21321. When the motor 211 is working, power transmission is achieved through the meshing of the gear 212 and the meshing teeth 21321, which drives the base 5 to rise and fall through the transmission support 213, thereby driving the entire painting arm mechanism 3 to rise and fall.

[0057] A torsion spring (not shown) is fitted onto the second end of the first connecting arm 31. One end of the torsion spring is fixed in the mounting groove 51, and the other end is fixed to the first connecting arm 31. Rotational drives such as stepper motors generally have rotational errors. The torsion spring can improve the rotational accuracy of the rotating drive 22 when it stops. Specifically, a locking hole 312 is provided on the first connecting arm 31 near the second end, and a locking hook (not shown) is provided at the bottom of the mounting groove 51. The two ends of the torsion spring are respectively locked in the locking hole 312 and the locking hook.

[0058] As shown in Figure 9, a magnet (not shown) is installed at the end of the second end of the first connecting arm 31 away from the mounting groove 51. A Hall angle sensor 8 is installed on the inner frame 6 corresponding to the magnet. The Hall angle sensor 8 is used to detect the rotation angle of the first connecting arm 31. When the first connecting arm 31 rotates, the Hall angle sensor 8 senses the change in the magnetic field of the magnet, and the rotation angle of the first connecting arm 31 can be detected, thereby conveniently realizing the execution and control of the drawing action.

[0059] Specifically, the housing 1 includes an upper shell 12 and a lower shell 13 that are installed opposite each other. The card-reading drawing robot also includes a top seat 9. Inside the housing 1, the top seat 9 is installed inside the upper shell 12 and covers the inner frame 6. The top seat 9 is equipped with a main control circuit board 10 and a battery 20. The main control circuit board 10 is electrically connected to the battery 20, the lifting drive assembly 21, and the rotation drive component 22. The battery 20 provides power to the card-reading drawing robot. The motor 211 is installed in the lower shell 13. The lower shell 13 is also provided with at least two guide posts 40. The base 5 has corresponding guide holes 52. The guide posts 40 are inserted into the guide holes 52. When the base 5 is driven to lift, the guide holes 52 move on the guide posts 40. The cooperation between the guide posts 40 and the guide holes 52 improves the lifting stability of the base 5, thereby improving the lifting stability of the drawing arm mechanism 3.

[0060] As shown in Figure 12, notches are provided on the upper shell 12 and the lower shell 13, which fit together to form the arm extension opening 11. A card slot 121 is provided on the top of the upper shell 12, and an identification circuit board 50 is installed inside the upper shell 12 corresponding to the card slot 121. The identification circuit board 50 is electrically connected to the main control circuit board 10. In use, the user inserts the matching card 60 into the card slot 121 to start the card reading and drawing robot. After the identification circuit board 50 identifies the content data of the card 60, it transmits the content data to the main control circuit board 10. The main control circuit board 10 drives the drawing arm mechanism 3 to move by controlling the motor 211 or the stepper motor, thereby driving the drawing pen 4 to perform drawing actions.

[0061] Furthermore, a visual recognition module is also provided on the housing 1. This module is used to identify objects within the visual range, and the card-reading painting robot performs painting actions based on the visual recognition information. Specifically, the visual recognition module includes a camera 701 mounted on the front end of the upper housing 12. The camera 701 is electrically connected to the main control circuit board 10 via a circuit board. The camera 701 visually recognizes and acquires the shape and feature information of objects placed within the visual range. The card-reading painting robot then performs painting actions based on the acquired shape and feature information to draw objects with corresponding shapes and features. The visual recognition by the camera 701, the acquisition of the shape and feature information of objects, and the related processing of the visual information data can be implemented in ways known to those skilled in the art, and will not be elaborated here.

[0062] Furthermore, the card-reading drawing robot is also equipped with necessary components such as a switch button and a charging interface, which can be implemented in a manner known to those skilled in the art, and will not be described in detail here.

[0063] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A card-reading drawing robot, characterized in that, The device includes a housing, a drive mechanism, and a drawing arm mechanism. The drive mechanism is installed in the housing, and the drawing arm mechanism is used to mount a drawing pen. The drive mechanism drives the drawing arm mechanism to perform drawing actions. The drawing arm mechanism includes a first connecting arm, a second connecting arm, and a socket. The socket has a first socket cavity and a second socket cavity at its two ends, respectively. The first end of the first connecting arm is inserted into the first socket cavity, and the second end of the first connecting arm is connected to the drive mechanism. The first end of the second connecting arm is inserted into the second socket cavity. The first end of the first connecting arm is provided with a first magnetic attraction element, and the first end of the second connecting arm is provided with a second magnetic attraction element. The first magnetic attraction element and the second magnetic attraction element are magnetically attracted to each other.

2. The card-reading drawing robot according to claim 1, characterized in that, The first end of the first connecting arm is provided with a first mounting cavity, and the first magnetic suction member is installed in the first mounting cavity; the first end of the second connecting arm is provided with a second mounting cavity, and the second magnetic suction member is installed in the second mounting cavity; the first mounting cavity is detachably inserted into the first socket cavity, and the second mounting cavity is fixedly inserted into the second socket cavity.

3. The card-reading drawing robot according to claim 2, characterized in that, The drawing arm mechanism also includes a sleeve cover, through which the first end of the first connecting arm is inserted into the first sleeve cavity.

4. The card-reading drawing robot according to claim 3, characterized in that, The outer peripheral wall of the sleeve cover has two oppositely arranged anti-foolproof ribs of different shapes. The peripheral wall of the first sleeve cavity has two anti-foolproof grooves corresponding to the two anti-foolproof ribs. And / or the sleeve has a partition plate separating the first sleeve cavity and the second sleeve cavity. The bottom of the sleeve cover is provided with a limiting protrusion. The partition plate is provided with a first limiting groove or limiting hole corresponding to the limiting protrusion. The limiting protrusion is inserted into the first limiting groove or limiting hole.

5. The card-reading drawing robot according to claim 2, characterized in that, The outer peripheral wall of the second mounting cavity is provided with a second limiting groove along the axial direction, and the inner peripheral wall of the second sleeve cavity is provided with a limiting rib along the axial direction, the limiting rib being embedded in the second limiting groove; and / or the outer peripheral wall of the second mounting cavity is provided with a first snap-fit ​​groove along the circumferential direction, and the inner peripheral wall of the second sleeve cavity is provided with a first snap-fit ​​protrusion along the circumferential direction, the first snap-fit ​​protrusion being snapped into the first snap-fit ​​groove.

6. The card-reading drawing robot according to any one of claims 1 to 5, characterized in that, The card-reading drawing robot also includes a base and an inner frame that can be lifted and lowered within the housing. The inner frame covers the base to form a transmission cavity. The driving mechanism includes a lifting drive assembly and a rotating drive component. The lifting drive assembly is connected to the base to drive the base to lift and lower. The rotating drive component is installed at the bottom of the base. Within the transmission cavity, the base has a recessed mounting groove. The drive shaft of the rotating drive component passes through the mounting groove and extends into the transmission cavity. The second end of the first connecting arm is installed on the drive shaft of the rotating drive component and is located at the mounting groove.

7. The card-reading drawing robot according to claim 6, characterized in that, A torsion spring is fitted on the second end of the first connecting arm. One end of the torsion spring is fixed in the mounting groove, and the other end is fixed on the first connecting arm.

8. The card-reading drawing robot according to claim 7, characterized in that, A magnet is installed on the second end of the first connecting arm away from the mounting groove, and a Hall angle sensor is installed on the inner frame corresponding to the magnet. The Hall angle sensor is used to detect the rotation angle of the first connecting arm.

9. The card-reading drawing robot according to claim 6, characterized in that, The housing includes an upper shell and a lower shell that are installed opposite to each other, and the card reading and drawing robot also includes a top seat; inside the housing, the top seat is installed inside the upper shell and covers the inner frame; the top seat is equipped with a main control circuit board and a battery, and the main control circuit board is electrically connected to the battery, the lifting drive assembly and the rotation drive component respectively.

10. The card-reading drawing robot according to any one of claims 1 to 5, characterized in that, The shell is also equipped with a visual recognition module, which is used to identify objects within the visual range. The card-reading painting robot performs painting actions based on the visual recognition information.

Images