A linear motion motor for tattoo and embroidery

Abstract

The present invention relates to the field of motor technology, and discloses a linear motion motor for tattooing and embroidery. The motor comprises a front cover, a housing tightly fitted with one end of the front cover, and a rear cover tightly fitted with the end of the housing opposite the front cover. A fixed magnet is fixedly disposed within the front cover, a boss is disposed at the end of the rear cover proximal to the housing, a cylindrical center tube is sleeved on the outer side of the boss, a push rod is slidably connected within the center tube, one end of the push rod passes through the front cover, a moving magnet group is fixedly connected to the end of the push rod proximal to the rear cover, a booster magnet located at one end of the moving magnet group is slidably connected within the center tube, a first coil and a second coil are sequentially sleeved on the outer wall of the center tube, the first coil is plugged and fixed to the front cover, and a plurality of lead terminals are disposed on the rear cover. Through two-phase drive of the first and second coils, precise control of the motor's displacement and driving force is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a linear motion motor for tattooing and embroidery. Background Art

[0002] A linear motor is a transmission device that converts electrical energy directly into mechanical energy for linear motion without any intermediate conversion mechanism. Linear motors are also called linear motors, linear motors, linear motors, and push rod motors. The most commonly used linear motor types are flat plate, U-slot, and tubular.

[0003] Tattoo and embroidery equipment requires a propulsion engine. Under electronic control, the engine propels the laser needle back and forth, achieving the cosmetic tattooing function. Currently, the industry uses various rotating motors coupled with cam or connecting rod structures to achieve this function. With this structure, the displacement of the push rod is determined by the design of the cam or connecting rod mechanism and cannot be adjusted during use. Furthermore, the time delay between the motor's rotation and stopping can lead to control errors or misoperation, making the mechanism's thrust difficult to control. Furthermore, the cam mechanism converts the motor's rotational motion into linear forward and backward movement, generating significant mechanical noise during operation. This significantly impacts the practicality of tattoo and embroidery equipment.

[0004] Therefore, how to achieve the controllable movement distance and thrust of the linear motor and reduce noise has become a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to realize the controllable displacement and thrust of the linear motor; and the solution of directly performing linear motion through a cam conversion mechanism meets the silent requirements.

[0006] To this end, according to the first aspect, an embodiment of the present invention discloses a linear motion motor for tattoo embroidery, comprising: a front cover, a shell tightly fitted with one end of the front cover, and a back cover tightly fitted with one end of the shell relative to the front cover, a fixed magnet is fixedly provided in the front cover, a second boss is provided at one end of the back cover close to the shell, a cylindrical center tube is sleeved on the outer side of the second boss, a push rod is slidably connected in the center tube, one end of the push rod passes through the front cover, and a moving magnet group is fixedly connected to the end of the push rod close to the back cover, a booster magnet located at one end of the moving magnet group is slidably connected in the center tube, a first coil and a second coil are sequentially sleeved on the outer wall of the center tube, the first coil is plugged and fixed to the front cover, and a plurality of lead terminals are provided on the back cover.

[0007] Optionally, a positioning groove corresponding to the fixed magnet is formed at one end of the front cover, the fixed magnet is annular, and the fixed magnet is fixedly connected to the front cover by welding.

[0008] Optionally, a disc for limiting the position of the movable magnet group is fixedly provided at one end of the push rod close to the rear cover.

[0009] Optionally, one end of the front cover is provided with a frustum for plugging and fitting with the center hole of the first coil.

[0010] Optionally, a vent hole is provided at the center of the rear cover for balancing the airflow outside the motor, so as to reduce the airflow resistance when the boost magnet moves in the central tube.

[0011] Optionally, the booster magnet is provided with a central through hole, and the central through hole, the rear cover, the front cover and the central tube form an airflow channel to reduce airflow resistance when the booster magnet moves in the central tube.

[0012] Optionally, the push rod and the movable magnet group are fixed as one body by an adhesive.

[0013] Optionally, the back cover is provided with a special-shaped hole for assembling and connecting the lead terminal, and the lead terminal can be used for external connection.

[0014] The present invention has the following beneficial effects: after the first coil and the second coil are energized, magnetic poles are generated, and the booster magnet drives the moving magnet to move in the central tube. After the first coil and the second coil are energized, the magnetic pole in the middle of the moving magnet group that is perpendicular to the direction of movement of the motor and the energized coil generate magnetic thrust, and the direction of the thrust is perpendicular to the direction of current and the magnetic pole in the middle of the moving magnet group that is perpendicular to the direction of movement of the motor are all perpendicular to each other. Since the moving magnet group is fixedly connected to the push rod, the push rod is driven to move in the central tube to realize the linear motion of the motor; through the two-phase drive of the first coil and the second coil, precise control of the displacement and driving force of the motor is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the exploded structure of a linear motion motor for tattoo and embroidery disclosed in this embodiment;

[0017] Figure 21 is a cross-sectional schematic diagram of a linear motion motor for tattoo and embroidery disclosed in this embodiment;

[0018] Figure 3 This is a schematic structural diagram of a front cover of a linear motion motor for cosmetic tattooing disclosed in this embodiment;

[0019] Figure 4 This is a schematic structural diagram of a housing of a linear motion motor for tattoo and embroidery disclosed in this embodiment;

[0020] Figure 5 This is a schematic structural diagram of a rear cover of a linear motion motor for tattoo embroidery disclosed in this embodiment;

[0021] Figure 6 This is a schematic structural diagram of a push rod of a linear motion motor for tattoo and embroidery disclosed in this embodiment;

[0022] Figure 7 This is a schematic structural diagram of a moving magnet of a linear motion motor for tattoo embroidery disclosed in this embodiment;

[0023] Figure 8a This embodiment discloses the assembly and magnetic pole characteristics of a linear motion motor magnet group for tattoo embroidery.

[0024] Figure 8b This is a diagram of the magnetic circuit of a linear motion motor for tattooing disclosed in this embodiment when it is not powered;

[0025] Figure 8c This is a magnetic circuit diagram of a first coil of a linear motion motor for tattoo embroidery disclosed in this embodiment when energized;

[0026] Figure 8d This is a magnetic circuit diagram of a linear motion motor for tattoo embroidery disclosed in this embodiment when the first and second coils are energized;

[0027] Figure 8e This is the magnetic thrust generation feature of the first and second coils of a linear motion motor for tattoo embroidery disclosed in this embodiment when energized.

[0028] Figure numerals: 1, front cover; 11, first cone; 12, second cone; 13, positioning groove; 14, circular hole; 2, fixed magnet; 3, outer shell; 31, positioning hole; 32, cone hole; 41, first coil; 42, second coil; 5, center tube; 6, lead terminal; 7, push rod; 71, push body; 72, disc; 73, end face; 8, moving magnet group; 81, inner hole; 82, pole face; 9, booster magnet; 10, back cover; 101, second boss; 102, vent; 103, first boss; 104, special-shaped hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components; wireless connections or wired connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] The embodiment of the present invention discloses a linear motion motor for tattoo embroidery, such as Figure 1 、 Figure 2 and Figure 4As shown, it includes: a front cover 1, a shell 3 that fits tightly with one end of the front cover 1, and a back cover 10 that fits tightly with one end of the shell 3 relative to the front cover 1. A fixed magnet 2 is fixedly provided in the front cover 1, and a second boss 101 is provided at the end of the back cover 10 close to the shell 3. The outer side of the second boss 101 is sleeved with a cylindrical center tube 5, and a push rod 7 is slidably connected in the center tube 5. One end of the push rod 7 passes through the front cover 1, and the end of the push rod 7 close to the back cover 10 is fixedly connected to a moving magnet group 8. A booster magnet 9 located at one end of the moving magnet group 8 is slidably connected in the center tube 5. The outer wall of the center tube 5 is sequentially sleeved with a first coil 41 and a second coil 42. The first coil 41 is plugged and fixed to the front cover 1, and a plurality of lead terminals 6 are provided on the back cover 10. In the specific implementation process, the front cover 1 is further provided with a first truncated cone 11 for being plugged and fixed with the truncated cone hole 32 of the shell 3, the rear cover 10 is provided with a first boss 103, and the shell 3 is provided with a truncated cone hole 32 plugged and fixed with the first boss 103.

[0034] It should be noted that after the first coil 41 and the second coil 42 are energized, magnetic poles are generated, and the booster magnet 9 drives the movable magnet group 8 to move in the central tube 5. Since the movable magnet group 8 is fixedly connected to the push rod 7, the push rod 7 is driven to move in the central tube 5, thereby realizing the linear motion of the motor; through the two-phase drive of the first coil 41 and the second coil 42, precise control of the motor's displacement and driving force is achieved.

[0035] It should also be noted that two two-pole magnets are designed with their magnetization directions parallel to the direction of motor motion. During assembly, the same poles are placed face-to-face, and the mutually repelling poles are fixed together into a magnet group using external force and adhesive. The magnetic pole characteristics exhibited after assembly are that the poles at both ends of the magnet group, parallel to the direction of motor motion, are identical. The middle portion of the magnet group exhibits a pole perpendicular to the direction of motor motion, and this pole is different from the poles at the end faces of the magnet group. The magnetic force of the poles perpendicular to the direction of motor motion is equal at the periphery.

[0036] like Figure 2 and Figure 3 As shown, a positioning groove 13 corresponding to the fixed magnet 2 is opened at one end of the front cover 1. The fixed magnet 2 is annular and is fixedly connected to the front cover 1 by welding.

[0037] like Figure 2 、 Figure 6 and Figure 7 As shown, a disk 72 for limiting the position of the movable magnet group 8 is fixedly provided at one end of the push rod 7 near the rear cover 10. In a specific implementation, the movable magnet group 8 is provided with an inner hole 81, and the push rod 7 includes a push body 71 that is plugged into the inner hole 81 of the movable magnet group 8. The end face 73 of the push rod 7 is in contact with the magnetic pole face 82 of the movable magnet group 8.

[0038] like Figure 2 and Figure 3 As shown, one end of the front cover 1 is provided with a second truncated platform 12 for plugging and fitting with the center hole of the first coil 41 .

[0039] like Figure 2 and Figure 5 As shown, a vent hole 102 is provided in the center of the rear cover 10 for balancing the airflow outside the motor, so as to reduce the airflow resistance when the boost magnet 9 moves in the central tube 5 .

[0040] like Figure 2 As shown, the booster magnet 9 is provided with a central through hole, which forms an airflow channel with the rear cover 10 , the front cover 1 and the central tube 5 to reduce the airflow resistance when the booster magnet 9 moves in the central tube 5 .

[0041] like Figure 2 As shown, the push rod 7 and the moving magnet group 8 are fixed as a whole by adhesive.

[0042] like Figure 2 and Figure 5 As shown, the rear cover 10 is provided with a special-shaped hole 104 for assembling and connecting the lead terminal 6, and the lead terminal 6 can be used for external connection.

[0043] Working principle: When the first coil 41 and the second coil 42 are energized, magnetic poles are generated, and the booster magnet 9 drives the movable magnet group 8 to move in the central tube 5. Since the movable magnet group 8 is fixedly connected to the push rod 7, the push rod 7 is driven to move in the central tube 5, thereby realizing the linear motion of the motor; through the two-phase drive of the first coil 41 and the second coil 42, precise control of the motor's displacement and driving force is achieved.

[0044] Workflow: Such as Figure 8a As shown, when the motor is not powered on, the designed fixed magnet 2, movable magnet group 8, and booster magnet 9 are all axially magnetized. When assembling the magnets, the assembly method of the fixed magnet 2 pole and the movable magnet group 8 pole needs to satisfy that the relative pole faces 82 of the two magnets are the same and repel each other, while the assembly method of the movable magnet group 8 and the mounting pole needs to satisfy that the relative pole faces 82 of the two magnets are the same and repel each other: the booster magnet 9 is limited by the rear cover 10, and the three magnets are in a balanced state under their respective magnetic forces, and the motor has a certain holding force.

[0045] like Figure 8b As shown, when the first coil 41 of the motor is energized, a large excitation magnetic field is formed inside the first coil 41, and the direction is as follows: Figure 8bS1 and N1 shown in the figure push the push rod 7 and the overall axis of the moving magnet group 8 to move upward. When the moving magnet group 8 moves upward, the distance between the moving magnet 8 and the fixed magnet 2 is reduced. The reduced distance increases the repulsive force between the moving magnet group 8 and the fixed magnet 2. The magnitude of the thrust is proportional to the current of the first coil 41. When the thrust of the excitation of the first coil 41 and the repulsive force between the moving magnet group 8 and the fixed magnet 2 are balanced with each other again, the linear motor stops moving.

[0046] like Figure 8c As shown, if a larger displacement or pushing force is required, the second coil 42 can be activated to generate the following Figure 8c The excitation poles S2 and N2 shown in the figure, the magnetic field force pushes the booster magnet 9 to move away from the limited position of the booster magnet 9 to reduce the distance between the booster magnet 9 and the moving magnet group 8, increase the repulsive force between the push magnet and the moving magnet group 8, and the increased repulsive force pushes the moving magnet group 8 to move upward, reducing the distance between the moving magnet 8 and the fixed magnet 2 until the thrust and repulsive forces are balanced and the motor stops moving.

[0047] like Figure 8d As shown, when the first coil 41 and the second coil 42 are excited at the same time, the push rod 7 moves up in the axial phase. When the push rod 7 moves up to one side of the disk 72 and is infinitely close to the end face of the second truncated table 12 of the front cover 1, the pushing motion stroke of the linear motor is maximum.

[0048] like Figure 8c 、 Figure 8d and Figure 8e As shown, when the excitation current stops, all coil excitation fields disappear and the linear motor returns to the state as shown in the figure. Figure 8a The state shown is balanced.

[0049] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A linear motion motor for tattoo and embroidery, characterized in that: include: A front cover (1), a shell (3) tightly fitting with one end of the front cover (1), and a rear cover (10) tightly fitting with one end of the shell (3) relative to the front cover (1), wherein a fixed magnet (2) is fixedly provided in the front cover (1), and a second boss (101) is provided at one end of the rear cover (10) close to the shell (3), and a cylindrical center tube (5) is sleeved on the outer side of the second boss (101), and a push rod (7) is slidably connected in the center tube (5), and one end of the push rod (7) passes through the front cover (1) ), one end of the push rod (7) close to the rear cover (10) is fixedly connected to a moving magnet group (8), and a boosting magnet (9) located at one end of the moving magnet group (8) is slidably connected in the center tube (5), and the outer wall of the center tube (5) is sleeved with a first coil (41) and a second coil (42) in sequence, and the first coil (41) is plugged and fixed to the front cover (1), and a plurality of lead terminals (6) are provided on the rear cover (10); one end of the front cover (1) is provided with a positioning groove ( 13), the fixed magnet (2) is annular, and the fixed magnet (2) is fixedly connected to the front cover (1) by welding; the push rod (7) is fixedly provided with a disk (72) at one end close to the rear cover (10) for limiting the position of the movable magnet group (8); one end of the front cover (1) is provided with a second truncated cone (12) for plugging and matching with the center hole of the first coil (41); the center of the rear cover (10) is provided with a vent hole (102) for balancing the airflow outside the motor, so as to reduce the pressure of the booster magnet (9) in the center. The thrust magnet (9) is provided with a central through hole, and the central through hole, the rear cover (10), the front cover (1), and the central tube (5) form an air flow channel to reduce the air flow resistance of the thrust magnet (9) when it moves in the central tube (5); the push rod (7) and the moving magnet group (8) are fixed as a whole by an adhesive; the rear cover (10) is provided with a special-shaped hole (104) for assembling and connecting the lead terminal (6), and the lead terminal (6) can be used for external connection.

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