CN215096711U - Electric lettering pen based on cam-slider transmission - Google Patents

Abstract

The utility model discloses an electronic pen of carving characters based on cam-slider transmission belongs to the pen field of carving characters. The utility model discloses an electronic pen of carving characters, reset piece, impact shaft and impact shaft spring including casing, motor, cam, slider, the cam is connected with the output shaft transmission of motor, and slider slidable mounting cooperatees in the casing with the cam outline of cam, and the front end of casing is located in the impact shaft slip, and the front end of slider is equipped with and pushes away the piece with impact shaft tail end matched with wedge. The utility model converts the rotary motion of the motor into the reciprocating motion of the slide block through the cam, and utilizes the wedge-shaped pushing block at the front end of the slide block to drive the impact shaft to vibrate back and forth, so that the motor is free from axial acting force, the working stability of the motor is better, and the service life is longer; and moreover, the angle design of the wedge-shaped pushing block can enable the force applied to the impact shaft by the sliding block to be larger, the impact force of the impact shaft can be improved, and the working performance of the electric lettering pen is improved.

Description

Electric lettering pen based on cam-slider transmission

Technical Field

The utility model relates to a pen of carving characters, more specifically say, relate to an electronic pen of carving characters based on cam-slider transmission.

Background

The lettering pen is a necessary tool for carving work. The traditional lettering pen is mainly manual, and the carving work efficiency is low and is very laborious. Pneumatic and electric lettering pens also exist in the market at present, the pneumatic lettering pen takes an air source as power, is clean and pollution-free, but needs to be connected with the air source for use, and has higher requirements on use conditions; the electric lettering pen can be divided into an alternating current electric lettering pen and a direct current electric lettering pen, is relatively flexible to use and is more widely applied.

The existing electric lettering pen is driven by high-frequency vibration of an electromagnet to drive high-frequency vibration of a pen point, can only be driven by an alternating-current power supply and needs to be externally connected with a 220V power supply for use, and the oscillation of the electromagnet is easily conducted to the hand of a user, so that the carving is easy to cause deviation, the carving accuracy is slightly poor, the electromagnet is high in cost, and the service life is short. The direct current electric lettering pen is mostly driven by a motor, the rotary motion of the motor is converted into the reciprocating vibration of a pen point, the working principle of the direct current electric lettering pen is similar to that of a percussion drill, the conversion of the rotary motion and the reciprocating vibration is realized by utilizing the relative rotation of two vibrating blocks with concave-convex tooth-shaped end surfaces, the defects of the electromagnet type alternating current lettering pen are overcome, but the impact force of the pen point is directly transmitted to an output shaft of the motor, the axial acting force which can be borne by the output shaft of the motor is generally small, and therefore the quality requirement of the motor is high.

Based on the above technical problems of the existing electric lettering pen, it is urgently needed to design a new transmission mechanism to solve the above disadvantages of the existing electric lettering pen.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to solve the problems of the prior electric lettering pen and provide an electric lettering pen based on cam-slider transmission, and by adopting the technical scheme of the utility model, the rotary motion of a motor is converted into the reciprocating motion of a slider through a cam, and a wedge-shaped pushing block at the front end of the slider is utilized to drive an impact shaft to vibrate back and forth, so that the motor is free from axial acting force, the working stability of the motor is better, and the service life is longer; moreover, the angle design of the wedge-shaped pushing block can ensure that the force applied to the impact shaft by the sliding block is larger, the impact force of the impact shaft can be improved, and the working performance of the electric lettering pen is improved; in addition, the initial position of the sliding block can be adjusted through the adjusting mechanism, so that the vibration amplitude of the lettering pen can be adjusted, and the use flexibility and the practicability of the lettering pen are improved.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model relates to an electric lettering pen based on cam-slide block transmission, which comprises a shell, a motor, a cam, a slide block reset piece, an impact shaft and an impact shaft spring, the motor is fixedly arranged in the shell, the cam is in transmission connection with an output shaft of the motor, the sliding block is arranged in the shell in a sliding way, the sliding direction of the sliding block is vertical to the axial direction of the wheel shaft of the cam, the sliding block is matched with the outer contour of the cam, the slide block resetting piece is arranged between the slide block and the shell and used for keeping the slide block in an elastic trend of being matched with the cam, the impact shaft is arranged at the front end of the shell in a sliding way, the front end of the sliding block is provided with a wedge-shaped pushing block matched with the tail end of the impact shaft, the impact shaft spring is arranged between the impact shaft and the shell and is used for enabling the tail end of the impact shaft to abut against the wedge-shaped pushing block.

Furthermore, the sliding block is provided with a transmission step and an adjusting step, the transmission step is abutted against the outer contour of the cam, and the shell is provided with an adjusting toggle button which is matched with the adjusting step and used for adjusting the reciprocating sliding stroke of the sliding block.

Furthermore, the adjusting shifting knob comprises a knob shaft and a shifting lever, the knob shaft is rotatably arranged on the shell, the shifting lever is arranged at one end, extending out of the shell, of the knob shaft, and an inclined surface which is abutted against the adjusting step is arranged at one end, far away from the shifting lever, of the knob shaft.

Furthermore, the sliding block is provided with a limiting sliding groove, a guide post matched with the limiting sliding groove in a sliding and guiding mode is arranged in the shell, and the sliding block is installed in the shell in a sliding mode through the guide post.

Further, the slider piece that resets be the spring, the slider on be equipped with the spring installation cavity, the casing in be equipped with the corresponding location boss in the spring installation cavity position on the slider, the slider piece that resets locate the spring installation cavity, and the slider piece that resets one end supports on the location boss, the other end supports on the slider.

Furthermore, a balance weight is arranged on the cam.

Furthermore, the front end detachably of casing be equipped with the front end cap, the front end of impact shaft pass the front end cap, impact shaft spring cover establish on the impact shaft, and the front end of impact shaft spring supports on the front end cap, the rear end of impact shaft spring supports on the limit structure on the impact shaft.

Furthermore, the limit structure on the impact shaft comprises a lug and a check ring, the lug is integrally formed on the outer wall of the impact shaft, the check ring is sleeved on the impact shaft from the front end of the impact shaft and abuts against the lug, and the rear end of the impact shaft spring abuts against the check ring.

Furthermore, a lithium battery and a control module are further arranged in the shell, and the control module is respectively electrically connected with the lithium battery and the motor and is used for carrying out direct current driving on the motor.

Furthermore, the driving voltage of the control module to the motor is 3.7V-18V.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) the utility model discloses an electronic pen of carving characters based on cam-slider transmission, it includes the casing, including a motor, an end cap, a controller, and a cover plate, the cam, the slider resets, jump bit and jump bit spring, the cam is connected with the output shaft transmission of motor, the slider is slidable mounting in the casing, the slider cooperatees with the cam outline of cam, the jump bit slides and locates the front end of casing, the front end of slider is equipped with the wedge-shaped promotion piece with jump bit tail end matched with, convert the rotary motion of motor into the reciprocating motion of slider through the cam, utilize the wedge-shaped promotion piece of slider front end to drive the jump bit and vibrate from beginning to end, the motor does not receive axial effort, make the job stabilization nature of motor better, and service life is longer; moreover, the angle design of the wedge-shaped pushing block can ensure that the force applied to the impact shaft by the sliding block is larger, the impact force of the impact shaft can be improved, and the working performance of the electric lettering pen is improved;

(2) the utility model discloses an electronic lettering pen based on cam-slider transmission, have transmission step and regulation step on its slider, transmission step and the cam outline looks butt of cam, be equipped with on the casing with adjust the step and cooperate and be used for adjusting the slider regulation dial button of reciprocal sliding stroke, utilize the initial position of adjusting the dial button steerable slider, change the vibration amplitude of impact shaft, realize the vibration amplitude regulation of lettering pen, improved the use flexibility and the practicality of lettering pen;

(3) the utility model discloses an electronic lettering pen based on cam-slider transmission, its regulation dial knob includes knob axle and driving lever, and the knob axle rotates to be located on the casing, and the driving lever is located the one end that the knob axle stretches out the casing, and the one end that the knob axle was kept away from the driving lever is equipped with the inclined plane with the butt of above-mentioned regulation step, utilizes the inclined plane structure to cooperate with the regulation step of slider, only needs the rotation regulation dial knob can adjust the slider, and the vibration range is adjusted more simply and conveniently, and simple structure is compact, convenient operation;

(4) the utility model discloses an electronic pen of carving characters based on cam-slider transmission, be equipped with spacing spout on its slider, locate in the casing with the above-mentioned guide post that spacing spout sliding guide cooperates, the slider is installed in the casing through the guide post is slidable, the structural design is simple, the assembly of the slider of being convenient for;

(5) the utility model discloses an electronic lettering pen based on cam-slider transmission, its slider reset piece is the spring, is equipped with the spring installation cavity on the slider, is equipped with the location boss corresponding with the spring installation cavity position on the slider in the casing, and the slider reset piece is located the spring installation cavity, and the slider reset piece one end supports on the location boss, and the other end supports on the slider, adopts above-mentioned structural design, is convenient for the installation of spring between slider and casing, has further made things convenient for the assembly preparation of lettering pen;

(6) the cam-slider transmission-based electric lettering pen has the advantages that the balance block is arranged on the cam, so that the eccentric vibration of the cam can be reduced, the vibration of the lettering pen is slight, the operation is easy to control, and the carving accuracy of the lettering pen is improved;

(7) the utility model discloses an electronic lettering pen based on cam-slider transmission, the front end detachably of its casing is equipped with the front end cap, and the front end of percussion spindle passes the front end cap, and percussion spindle spring cover is established on the percussion spindle, and the front end of percussion spindle spring supports on the front end cap, and the rear end of percussion spindle spring supports on the limit structure on the percussion spindle, and structural design is simple compact, is convenient for the quick replacement of percussion spindle;

(8) the utility model discloses an electronic pen of carving characters based on cam-slider transmission still is equipped with lithium cell and control module in its casing, and control module is connected with lithium cell and motor electricity respectively for carry out DC drive to the motor, adopt DC drive, need not external power supply, it is nimble more convenient to use.

Drawings

Fig. 1 is a schematic cross-sectional structural view of an electric lettering pen based on cam-slider transmission of the present invention;

fig. 2 is a schematic perspective view of an electric lettering pen based on cam-slider transmission of the present invention;

fig. 3 is a schematic structural view of a cam-slider transmission mechanism of an electric lettering pen based on cam-slider transmission of the present invention;

fig. 4 is a schematic structural diagram of a slider in the present invention;

fig. 5 is a schematic structural diagram of an adjusting knob according to the present invention.

The reference numerals in the schematic drawings illustrate:

1. a housing; 1-1, a guide post; 1-2, positioning a boss; 1-3, impacting the shaft hole; 2. a motor; 3. a cam; 3-1, a balance weight; 4. a slider; 4-1, wedge-shaped pushing blocks; 4-2, a limiting sliding chute; 4-3, a spring mounting cavity; 4-4, a transmission step; 4-5, adjusting steps; 5. a slider reset; 6. an impact shaft; 6-1, lugs; 6-2, a check ring; 7. an impact shaft spring; 8. a front end cap; 9. adjusting a toggle button; 9-1, inclined plane; 9-2, a knob shaft; 9-3, a deflector rod; 10. a lithium battery; 11. and a control module.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.

[ examples ]

Referring to fig. 1, 2 and 3, the electric lettering pen based on cam-slider transmission of the present embodiment includes a housing 1, a motor 2, a cam 3, a slider 4, a slider reset element 5, an impact shaft 6 and an impact shaft spring 7, wherein the motor 2 is fixedly installed in the housing 1, the cam 3 is in transmission connection with an output shaft of the motor 2, preferably, the cam 3 is directly installed on the output shaft of the motor 2, the slider 4 is slidably installed in the housing 1, a sliding direction of the slider 4 is perpendicular to an axial direction of a wheel shaft of the cam 3, the slider 4 is matched with an outer contour of the cam 3, the slider reset element 5 is installed between the slider 4 and the housing 1 to keep an elastic tendency of the slider 4 matched with the cam 3, that is, the cam 3 rotates to drive the slider 4 to reciprocate in a left-right direction of fig. 1, the impact shaft 6 is slidably installed at a front end of the housing 1, preferably, the front end of the shell 1 is provided with an impact shaft hole 1-3, the impact shaft 6 is arranged in the impact shaft hole 1-3 in a sliding manner, the front end of the sliding block 4 is provided with a wedge-shaped pushing block 4-1 matched with the tail end of the impact shaft 6, and the impact shaft spring 7 is arranged between the impact shaft 6 and the shell 1 and is used for enabling the tail end of the impact shaft 6 to be abutted against the wedge-shaped pushing block 4-1. In the reciprocating vibration process of the sliding block 4, the impact shaft 6 can be driven to reciprocate back and forth under the action of the wedge-shaped pushing block 4-1. By adopting the cam-slider transmission structure, the rotary motion of the motor 2 is converted into the reciprocating motion of the slider 4 through the cam 3, the impact shaft 6 is driven to vibrate back and forth by the wedge-shaped pushing block 4-1 at the front end of the slider 4, and the motor 2 is free from axial acting force, so that the working stability of the motor 2 is better, and the service life is longer; in addition, the angle design of the wedge-shaped pushing block 4-1 can enable the force applied to the impact shaft 6 by the sliding block 4 to be larger, the impact force of the impact shaft can be improved, and the working performance of the electric lettering pen is improved.

As shown in fig. 4 and 5, in the electric lettering pen based on cam-slider transmission of the embodiment, the slider 4 is further provided with a transmission step 4-4 and an adjustment step 4-5, the transmission step 4-4 can be arranged at the rear side of the slider 4, the adjustment step 4-5 can be arranged at the middle part of the slider 4, the transmission step 4-4 is abutted against the outer contour of the cam 3, the cam 3 rotates to drive the slider 4 to move through the transmission step 4-4, and the reciprocating vibration control of the slider 4 is realized under the action of the slider reset piece 5; in order to ensure that the cam 3 is matched with the transmission step 4-4 more stably, a lug boss matched with the cam 3 can be arranged on the transmission step 4-4. The shell 1 is provided with an adjusting dial button 9 which is matched with the adjusting steps 4-5 to adjust the reciprocating sliding stroke of the sliding block 4, the initial position of the sliding block 4 can be controlled by the adjusting dial button 9, the vibration amplitude of the impact shaft 6 is changed, the vibration amplitude adjustment of the lettering pen is realized, and the use flexibility and the practicability of the lettering pen are improved. In this embodiment, as shown in fig. 5, the adjusting dial 9 includes a knob shaft 9-2 and a dial 9-3, the knob shaft 9-2 is rotatably disposed on the housing 1, a limit step can be disposed on the knob shaft 9-2 to enable the adjusting dial 9 to be axially limited on the housing 1, the dial 9-3 is disposed at an end of the knob shaft 9-2 extending out of the housing 1 for controlling the rotation of the knob shaft 9-2, an inclined surface 9-1 abutting against the adjusting step 4-5 is disposed at an end of the knob shaft 9-2 away from the dial 9-3, the inclined surface 9-1 and the dial 9-3 are preferably integrally formed on the knob shaft 9-2, the inclined surface 9-1 is located on a lower end surface of the knob shaft 9-2, and the contact position between the inclined surface 9-1 and the adjusting step 4-5 is changed by the dial 9-3 driving the inclined surface 9-1 to rotate, and then realize the vibration amplitude adjustment of slider 4, utilize the inclined plane structure and cooperate with regulation step 4-5 of slider 4, only need rotatory regulation dial button 9 can adjust slider 4, the vibration amplitude adjustment is more simple and convenient, and simple structure is compact, convenient operation.

As shown in fig. 3 and 4, in the present embodiment, the sliding block 4 is provided with a limiting sliding groove 4-2, the housing 1 is provided with a guiding post 1-1 slidably engaged with the limiting sliding groove 4-2, and the sliding block 4 is slidably mounted in the housing 1 through the guiding post 1-1. Specifically, the shell 1 can adopt a two-half structure and comprises a left shell and a right shell, the left shell and the right shell are connected through screws, opposite guide posts 1-1 are arranged on the left shell and the right shell, during assembly, the slide block 4 is firstly installed in the shell on one side, the corresponding guide posts 1-1 are installed in the limiting sliding grooves 4-2 of the slide block 4 in a sliding mode, then the shell on the other side is fixed through screws, the corresponding guide posts 1-1 on the left shell and the right shell are inserted into the limiting sliding grooves 4-2 from two sides, the slide block 4 can stably slide in the shell 1, the structural design is simple, and assembly of the slide block is facilitated. Furthermore, the sliding block reset piece 5 is a spring, a spring installation cavity 4-3 is arranged on the sliding block 4, a positioning boss 1-2 corresponding to the spring installation cavity 4-3 on the sliding block 4 is arranged in the shell 1, the sliding block reset piece 5 is arranged in the spring installation cavity 4-3, one end of the sliding block reset piece 5 abuts against the positioning boss 1-2, and the other end of the sliding block reset piece 5 abuts against the sliding block 4. Specifically, the outer spring diameter of the slider returning part 5 is greater than the thickness of the slider 4, so that the spring protrudes from both sides of the slider 4 when the spring is installed in the spring installation cavity 4-3. Similarly, the positioning bosses 1-2 can be respectively arranged in the left shell and the right shell, the positioning bosses 1-2 in the left shell and the right shell are opposite, when in assembly, the sliding block reset piece 5 can be firstly arranged between the shell on one side and the sliding block 4, then the shell on the other side is arranged, the positioning bosses 1-2 on the two sides are matched with the spring, and meanwhile, the inner wall of the shell 1 and the spring installation cavity 4-3 on the sliding block 4 are enclosed to form a spring limiting cavity, so that the sliding block reset piece 5 can be stably arranged between the sliding block 4 and the shell 1. By adopting the structural design, the spring can be conveniently installed between the sliding block 4 and the shell 1, and the assembly and the manufacture of the lettering pen are further facilitated.

In order to reduce the self vibration of the electric lettering pen, the cam 3 is also provided with a balance block 3-1, the balance block 3-1 can be integrally formed on one side of the cam 3, the phase of the balance block is opposite to the eccentric phase of the cam 3, so that the rotation of the cam 3 is more stable, the eccentric vibration of the cam 3 can be reduced, the vibration of the lettering pen is slight, the operation is easier to control, and the carving accuracy of the lettering pen is improved. As shown in fig. 1 and 3. The front end of the shell 1 is detachably provided with a front end cap 8, the front end of the impact shaft 6 penetrates through the front end cap 8, an impact shaft spring 7 is sleeved on the impact shaft 6, the front end of the impact shaft spring 7 abuts against the front end cap 8, and the rear end of the impact shaft spring 7 abuts against a limiting structure on the impact shaft 6. As a preferred embodiment, the limiting structure on the impact shaft 6 comprises a lug 6-1 and a retainer ring 6-2, the lug 6-1 is integrally formed on the outer wall of the impact shaft 6, the retainer ring 6-2 is sleeved on the impact shaft 6 from the front end of the impact shaft 6 and abuts against the lug 6-1, and the rear end of an impact shaft spring 7 abuts against the retainer ring 6-2, so that the structural design is simple and compact, and the impact shaft can be quickly replaced. The front end cap 8 is preferably in threaded connection with the front end of the shell 1, semicircular connectors are arranged at the front ends of the left shell and the right shell, external threads are arranged on the semicircular connectors respectively, after the left shell and the right shell are assembled, the two semicircular connectors are combined into a complete circular connector, and the front end cap 8 is in threaded connection with the circular connector.

As shown in fig. 1 and fig. 2, in the electric lettering pen based on cam-slider transmission of the present embodiment, a lithium battery 10 and a control module 11 are further disposed in a casing 1, and the control module 11 is electrically connected to the lithium battery 10 and the motor 2, respectively, for performing direct current driving on the motor 2. The lithium battery 10 is a rechargeable battery, and a charging circuit and a switch control circuit are further arranged on the control module 11 to realize direct current control of the electric lettering pen. The driving voltage of the control module 11 to the motor 2 is preferably 3.7V to 18V. And the direct current drive is adopted, an external power supply is not required, and the use is more flexible and convenient. The circuit control principle of the electric lettering pen is the same as that of the existing direct current electric lettering pen, and the details are not described herein. When the impact mechanism is used, a switch button of the control module 11 is turned on, the motor 2 works to drive the cam 3 to rotate rapidly, the cam outer contour of the cam 3 acts on the sliding block 4, the sliding block 4 vibrates in a reciprocating mode under the combined action of the sliding block resetting piece 5, the wedge-shaped pushing block 4-1 at the front end of the sliding block 4 acts on the tail portion of the impact shaft 6, and the impact shaft 6 vibrates axially under the action of the impact shaft spring 7. When the axial vibration amplitude of the impact shaft 6 needs to be adjusted, the adjusting dial button 9 can be rotated through the dial rod 9-3, so that the matching position of the inclined surface 9-1 at the lower end of the adjusting dial button 9 and the sliding block 4 is changed, the initial position of the sliding block 4 is further changed, and the vibration amplitude adjustment of the impact shaft 6 is realized. The driving of the impact shaft 6 by the wedge-shaped pushing block 4-1 can have the following two conditions: one is to rely on the elasticity of the slide block reset piece 5 to provide the impact force of the impact shaft 6, the structural form at this moment is as shown in figure 1 state, when the highest point of the cam 3 cooperates with the transmission step 4-4 of the slide block 4, the impact shaft 6 is in the retraction state at this moment, when the cam 3 moves to the lowest point position, the slide block reset piece 5 drives the slide block 4 to move and make the impact shaft 6 impact forward through the wedge-shaped pushing block 4-1, this situation requires the slide block reset piece 5 to have greater elasticity to meet the impact force of the impact shaft 6; the other is to use the cam 3 to provide the impact force of the impact shaft 6, the inclination direction of the wedge-shaped pushing block 4-1 is opposite to that in fig. 1, when the highest point of the cam 3 is matched with the transmission step 4-4 of the slide block 4, the wedge-shaped pushing block 4-1 pushes the impact shaft 6 forwards to provide the impact force of the impact shaft 6, when the cam 3 moves to the lowest point position, the impact shaft 6 is in a retraction state, and the requirement on the elasticity of the slide block resetting piece 5 is low under the condition, and only the slide block 4 needs to be enabled to be reset.

The utility model discloses an electronic pen of carving characters based on cam-slider transmission, the rotary motion of motor is converted into the reciprocating motion of slider through the cam, utilizes the wedge-shaped promotion piece of slider front end to drive the impact shaft and vibrate from beginning to end, and the motor does not receive axial effort, makes the job stabilization nature of motor better, and life is longer; moreover, the angle design of the wedge-shaped pushing block can ensure that the force applied to the impact shaft by the sliding block is larger, the impact force of the impact shaft can be improved, and the working performance of the electric lettering pen is improved; in addition, the initial position of the sliding block can be adjusted through the adjusting mechanism, so that the vibration amplitude of the lettering pen can be adjusted, and the use flexibility and the practicability of the lettering pen are improved.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without creatively designing the similar structural modes and embodiments to the technical solutions, they should belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides an electronic pen of carving characters based on cam-slider transmission which characterized in that: comprises a shell (1), a motor (2), a cam (3), a slide block (4), a slide block reset piece (5), an impact shaft (6) and an impact shaft spring (7), wherein the motor (2) is fixedly arranged in the shell (1), the cam (3) is in transmission connection with an output shaft of the motor (2), the slide block (4) is arranged in the shell (1) in a sliding way, the sliding direction of the slide block (4) is vertical to the axial direction of a wheel shaft of the cam (3), the slide block (4) is matched with the outer contour of the cam (3), the slide block reset piece (5) is arranged between the slide block (4) and the shell (1) to ensure that the slide block (4) keeps the elastic trend matched with the cam (3), the impact shaft (6) is arranged at the front end of the shell (1) in a sliding way, a wedge-shaped pushing block (4-1) matched with the tail end of the impact shaft (6) is arranged at the front end of the slide block (4), the impact shaft spring (7) is arranged between the impact shaft (6) and the shell (1) and is used for enabling the tail end of the impact shaft (6) to be abutted against the wedge-shaped pushing block (4-1).

2. The cam-slider transmission-based electric lettering pen of claim 1, wherein: the sliding block (4) is provided with a transmission step (4-4) and an adjusting step (4-5), the transmission step (4-4) is abutted to the outer contour of the cam (3), and the shell (1) is provided with an adjusting toggle button (9) which is matched with the adjusting step (4-5) and used for adjusting the reciprocating sliding stroke of the sliding block (4).

3. The cam-slider transmission-based electric lettering pen of claim 2, wherein: the adjusting toggle button (9) comprises a knob shaft (9-2) and a toggle lever (9-3), the knob shaft (9-2) is rotatably arranged on the shell (1), the toggle lever (9-3) is arranged at one end of the knob shaft (9-2) extending out of the shell (1), and an inclined plane (9-1) which is abutted to the adjusting step (4-5) is arranged at one end of the knob shaft (9-2) far away from the toggle lever (9-3).

4. The cam-slider transmission-based electric lettering pen of claim 1, wherein: the sliding block (4) is provided with a limiting sliding groove (4-2), the shell (1) is internally provided with a guide post (1-1) which is matched with the limiting sliding groove (4-2) in a sliding and guiding way, and the sliding block (4) is arranged in the shell (1) in a sliding way through the guide post (1-1).

5. The cam-slider transmission-based electric lettering pen of claim 4, wherein: the slider reset piece (5) be the spring, slider (4) on be equipped with spring installation cavity (4-3), casing (1) in be equipped with spring installation cavity (4-3) position on slider (4) corresponding location boss (1-2), slider reset piece (5) locate in spring installation cavity (4-3), and the slider resets one end of piece (5) and supports on location boss (1-2), the other end supports on slider (4).

6. The cam-slider transmission-based electric lettering pen of claim 1, wherein: the cam (3) is also provided with a balance block (3-1).

7. The cam-slider transmission-based electric lettering pen of claim 1, wherein: the front end detachably of casing (1) be equipped with front end cap (8), the front end of impact shaft (6) pass front end cap (8), impact shaft spring (7) cover establish on impact shaft (6), and the front end of impact shaft spring (7) supports on front end cap (8), the rear end of impact shaft spring (7) supports on the limit structure on impact shaft (6).

8. The cam-slider transmission-based electric lettering pen of claim 7, wherein: the limiting structure on the impact shaft (6) comprises a lug (6-1) and a check ring (6-2), the lug (6-1) is integrally formed on the outer wall of the impact shaft (6), the check ring (6-2) is sleeved on the impact shaft (6) from the front end of the impact shaft (6) and abuts against the lug (6-1), and the rear end of the impact shaft spring (7) abuts against the check ring (6-2).

9. The electric lettering pen based on cam-slider transmission of any one of claims 1 to 8, wherein: the motor is characterized in that a lithium battery (10) and a control module (11) are further arranged in the shell (1), and the control module (11) is electrically connected with the lithium battery (10) and the motor (2) respectively and used for carrying out direct current driving on the motor (2).

10. The cam-slider transmission-based electric lettering pen of claim 9, wherein: the driving voltage of the control module (11) to the motor (2) is 3.7V-18V.

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