CN115816204A - Circuit board edge grinding machine capable of continuous grinding of corners - Google Patents

Abstract

The invention relates to the technical field of circuit board processing, and discloses a circuit board edging machine capable of continuous grinding at corners, including a circuit board edging machine body, and two door panels are arranged on one side of the circuit board edging machine body. One side of the door panel is fixedly connected with two hinges. The circuit board edging machine capable of continuous grinding at rotating angles can be used in conjunction with the first motor, the protective case, the connecting plate, the first gear rod and the second gear rod. Under the action of the first gear rod and the second gear rod, the rotation of the first motor drives the first gear rod to rotate, the first gear rod rotates and drives the second gear rod to rotate, and the second rotation rod rotates to drive the connection The board rotates, and after the connecting board rotates, it drives the rotating mechanism and the clamping mechanism fixed in the connecting plate to rotate, and the circuit board placed in the clamping mechanism rotates under the action of the rotating mechanism.

Description

Circuit board edge grinding machine capable of continuous grinding of corners

technical field

The invention relates to the technical field of circuit board processing, in particular to a circuit board edging machine capable of continuously grinding corners.

Background technique

The names of the circuit boards are: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin Thin circuit boards, printed (copper etching technology) circuit boards, etc., circuit boards make circuits miniaturized and intuitive, and play an important role in mass production of fixed circuits and optimizing the layout of electrical appliances. Circuit boards can be called printed circuit boards or printed circuit boards. Circuit board, circuit board, also known as flexible circuit board, flexible circuit board is a highly reliable, excellent flexible printed circuit board made of polyimide or polyester film as the base material, with wiring density The characteristics of high height, light weight, thin thickness and good bendability, together with the birth and development of FPC and PCB, gave birth to the new product of soft and hard combination board. Therefore, soft and hard combination board is flexible circuit board. It is combined with the rigid circuit board according to the relevant process requirements after pressing and other processes to form a circuit board with FPC characteristics and PCB characteristics.

When processing circuit boards, it is necessary to use a circuit board edging machine. When the edging machine is edging the circuit board blank, the staff needs to adjust the four sides of the circuit board in turn, and control the four sides of the circuit board to complete the edging process in sequence. The overall processing speed of the edging machine combined with manual drive is relatively slow, and the traditional edging machine has a low degree of automation during processing, which brings inconvenience to the user's processing of the circuit board and affects the user's efficiency when processing the circuit board. , while increasing the working pressure acting on the circuit board.

Contents of the invention

The object of the present invention is to provide a circuit board edging machine capable of continuously grinding corners, so as to solve the problems raised in the above-mentioned background technology.

In order to solve the above-mentioned technical problems, the present invention provides the following technical solution: the circuit board edging machine capable of continuous grinding at corners, including a circuit board edging machine body, and two door panels are arranged on one side of the circuit board edging machine body, so One side of the door panel is fixedly connected with two hinges, the connection between the door panel and the main body of the circuit board edging machine is connected through hinge rotation, the top of the circuit board edging machine body is provided with a grinding device, and the line The bottom of the board edging machine body is fixedly installed with four supporting legs, the top of the circuit board edging machine body is fixedly connected with a fixed plate, the top of the fixed plate is provided with a transmission mechanism, and the top of the transmission mechanism is set There are two rotating mechanisms, and the top of the rotating mechanisms is provided with two clamping mechanisms;

The transmission mechanism includes a first motor, a protective case, a connecting plate, a first gear rod and a second gear rod, the protective case is fixedly connected to the top of the fixed plate, the first motor is fixedly installed on the top of the protective case, The output end of the first motor penetrates to the inner wall of the protective case and is fixedly connected with the first gear rod, the second gear rod is arranged to be rotatably connected to the inner wall of the protective case, and the first gear rod and the second gear rod mesh connected, one end of the second gear rod passes through the protective shell and the fixed plate in turn;

The rotating mechanism includes a second motor, a support plate and two housings, the second motor is fixedly connected to the bottom of the connection plate, the output end of the second motor penetrates to the top of the connection plate and is fixedly connected to the support plate , the two shells are fixedly connected to the top of the support plate;

The clamping mechanism includes a splint, a connecting rod and a spring, the splint is arranged on one side of the housing, the side of the splint close to the connecting rod is fixedly connected to the connecting rod, and the connecting rod penetrates to the inner wall of the housing, The spring is arranged in the inner cavity of the casing.

Preferably, the inner wall of the housing is provided with two baffles, and a limit block is fixedly connected between opposite sides of the two baffles, and one side of the baffle near the connecting rod is fixedly connected with the connecting rod.

Preferably, a support rod is fixedly connected to one side of the other baffle, one end of the support rod is fixedly connected to the inner wall of the casing, and the inner wall of the spring is sleeved on the surfaces of the two limit blocks.

Preferably, a movable hole is provided on one side of the housing, and the inner cavity of the movable hole is movably connected with the surface of the connecting rod

Preferably, the inner wall of the housing is provided with a movable groove, and the inner cavity of the movable groove is movably connected with the spring.

Preferably, two first bearings are sheathed on the surface of the first gear rod, and the surface of the first bearing is fixedly connected to the inner wall of the protective case

Preferably, a second bearing is sheathed on the surface of the second gear rod, and the surface of the second bearing is fixedly connected to the inner wall of the protective case.

Preferably, a protective door is provided on one side of the protective shell, and the protective door is used for adding lubricating oil.

Preferably, a rotating shaft is fixedly connected to one side of the protective door, and the connection between the fixed plate and the protective shell is rotationally connected through the rotating shaft.

Preferably, a knob is movably connected to one side of the protective door, and one end of the knob passes through one side of the protective door and is threadedly connected with the inner wall of the protective shell.

Compared with the prior art, the beneficial effects achieved by the present invention are:

First, the present invention can be used in conjunction with the first motor, the protective case, the connecting plate, the first gear rod and the second gear rod by setting the first motor, the protective case, the connecting plate, the first gear rod and the second gear rod. Under the action of the rod, the rotation of the first motor drives the first gear rod to rotate, the first gear rod rotates and drives the second gear rod to rotate, the second rotation rod rotates and drives the connecting plate to rotate, and the connecting plate rotates Finally, the rotating mechanism and the clamping mechanism fixed in the connecting plate are driven to rotate, and the circuit board placed in the clamping mechanism is rotated under the action of the rotating mechanism, and multiple corners of the circuit board are polished, thereby increasing the number of circuit boards. The efficiency during grinding reduces the working pressure of the user when grinding the circuit board, and brings certain convenience to the user in processing the circuit board. At the same time, under the action of the first bearing and the second bearing, the first The frictional force of the gear rod and the second gear rod when rotating, thereby increasing the efficiency of the first gear rod and the second gear rod when rotating, and at the same time, under the action of the protective door, the first gear rod and the second gear rod are Protection, reduce the effect of dust entering the protective shell on the first gear and the second gear, thereby avoiding the situation that the first gear rod and the second gear rod are affected by dust and the transmission effect is not good, and at the same time, the rotating shaft Under the action, it is convenient for the user to open the protective door, and it is convenient to add lubricating oil into the first gear rod and the second gear rod to lubricate the first gear rod and the second gear rod, thereby achieving the purpose of a user-friendly protective door. At the same time, under the action of the knob, the protective door is limited to prevent the protective door from opening under the influence of external force, thereby affecting the first gear rod and the second gear rod in the protective shell, so that dust enters the protective shell to avoid The first gear lever and the second gear lever are affected, and the purpose of making it convenient for the user to limit the protective door is achieved.

Description of drawings

Fig. 1 is a perspective view of the present invention;

Fig. 2 is the first three-dimensional schematic view of the partial structure of the present invention;

Fig. 3 is a second perspective view of a partial structure of the present invention.

Fig. 4 is a third perspective view of a partial structure of the present invention.

FIG. 5 is a fourth perspective view of a partial structure of the present invention;

Fig. 6 is the first sectional view of the partial structure of the present invention;

Fig. 7 is the second sectional view of the partial structure of the present invention;

Fig. 8 is an enlarged view of the local structure at A in Fig. 7 of the present invention.

Among them: 1. Circuit board edging machine body; 2. Transmission mechanism; 201. First motor; 202. Protective shell; 203. Connecting plate; 204. First gear rod; 205. Second gear rod; 3. Rotation mechanism ; 301, the second motor; 302, the support plate; 303, the shell; 4, the clamping mechanism; 401, the splint; 402, the connecting rod; 403, the spring; 5, the supporting leg; 6, the door panel; 7, the hinge; 8. Fixed plate; 9. Protective door; 10. Rotating shaft; 11. Knob; 12. First bearing; 13. Second bearing; 14. Baffle plate; 15. Support rod; 16. Limiting block; 17. Grinding device ; 18, movable groove; 19, movable hole.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one

Please refer to Figure 1-8, including circuit board edging machine body 1, one side of circuit board edging machine body 1 is provided with two door panels 6, one side of door panel 6 is fixedly connected with two hinges 7, door panel 6 and The connection of the circuit board edger body 1 is connected through the rotation of the hinge 7, the top of the circuit board edger body 1 is provided with a grinding device 17, and the bottom of the circuit board edger body 1 is fixedly installed with four support legs 5, The top of the circuit board edging machine body 1 is fixedly connected with a fixed plate 8, the top of the fixed plate 8 is provided with a transmission mechanism 2, the top of the transmission mechanism 2 is provided with two rotating mechanisms 3, and the top of the rotating mechanism 3 is provided with two Clamping mechanism 4;

The transmission mechanism 2 includes a first motor 201, a protective case 202, a connecting plate 203, a first gear rod 204 and a second gear rod 205, the protective case 202 is fixedly connected to the top of the fixed plate 8, and the first motor 201 is fixedly mounted on the protective case 202, the output end of the first motor 201 penetrates to the inner wall of the protective shell 202 and is fixedly connected with the first gear rod 204, and the second gear rod 205 is set to be rotatably connected to the inner wall of the protective shell 202, the first gear rod 204 and the second The two gear rods 205 are meshed and connected, and one end of the second gear rod 205 passes through the protective shell 202 and the fixed plate 8 in turn. The surface of the first gear rod 204 is sleeved with two first bearings 12, and the surface of the first bearing 12 is in contact with the protective shell. The inner wall of 202 is fixedly connected, the surface of the second gear rod 205 is covered with the second bearing 13, the surface of the second bearing 13 is fixedly connected with the inner wall of the protective shell 202, and one side of the protective shell 202 is provided with a protective door 9, the protective door 9 is used to add lubricating oil, one side of the protective door 9 is fixedly connected with a rotating shaft 10, the connection between the fixed plate 8 and the protective shell 202 is connected through the rotation of the rotating shaft 10, and one side of the protective door 9 is movably connected with a knob 11. One end passes through one side of the protective door 9 and is threadedly connected with the inner wall of the protective shell 202 .

The specific implementation of this embodiment is: by setting the first motor 201, the protective case 202, the connecting plate 203, the first gear rod 204 and the second gear rod 205 to be used together, the first motor 201, the protective case 202, the first motor 201, the protective case 202, Under the action of the connecting plate 203, the first gear rod 204 and the second gear rod 205, the rotation of the first motor 201 drives the first gear rod 204 to rotate, and the first gear rod 204 drives the second gear rod 205 to rotate while rotating. Rotate, when the second rotating rod rotates, it drives the connecting plate 203 to rotate. After the connecting plate 203 rotates, it drives the rotating mechanism 3 and the clamping mechanism 4 fixed in the connecting plate 203 to rotate, and the circuit board placed in the clamping mechanism 4 is rotated. Rotating under the action of the rotating mechanism 3, the multiple corners of the circuit board are polished, thereby increasing the efficiency of the circuit board when polishing, reducing the working pressure of the user when polishing the circuit board, and providing the user with more control over the circuit board. The processing brings certain convenience, and at the same time, under the action of the first bearing 12 and the second bearing 13, the friction force of the first gear rod 204 and the second gear rod 205 when rotating is reduced, thereby increasing the first gear rod 204 and the second gear lever 205 when rotating, at the same time, under the effect of the protective door 9, the first gear lever 204 and the second gear lever 205 are protected, reducing dust from entering the protective shell 202 to the first gear and the second gear lever. The second gear is affected, thereby avoiding the situation that the first gear lever 204 and the second gear lever 205 are affected by dust and the transmission effect is not good. The lubricating oil is added into the first gear rod 204 and the second gear rod 205 to lubricate the first gear rod 204 and the second gear rod 205, so as to achieve the purpose of the user-friendly protective door 9, and at the same time, the function of the knob 11 Lower the protective door 9 into the limit to prevent the protective door 9 from opening under the influence of external force, thereby affecting the first gear rod 204 and the second gear rod 205 in the protective shell 202, so that dust enters the protective shell 202 The first gear rod 204 and the second gear rod 205 are avoided from being affected, and the purpose of making it convenient for the user to limit the position of the protective door 9 is achieved.

Embodiment two

Please refer to Figures 1-8, the rotating mechanism 3 includes a second motor 301, a support plate 302 and two housings 303, the second motor 301 is fixedly connected to the bottom of the connection plate 203, and the output end of the second motor 301 penetrates to the connection plate 203 and is fixedly connected to the support plate 302, and the two housings 303 are fixedly connected to the top of the support plate 302, and one side of the housing 303 is provided with a movable hole 19, and the inner cavity of the movable hole 19 and the surface of the connecting rod 402 Movably connected, the inner wall of the housing 303 is provided with a movable groove 18, and the inner cavity of the movable groove 18 is movably connected with the spring 403, and the inner wall of the housing 303 is provided with two baffles 14, between the opposite sides of the two baffles 14 Fixedly connected to the limit block 16, one side of the baffle 14 close to the connecting rod 402 is fixedly connected to the connecting rod 402, and one side of the other baffle 14 is fixedly connected to the support rod 15, and one end of the support rod 15 is connected to the housing 303 The inner wall of the spring 403 is fixedly connected, and the inner wall of the spring 403 is sleeved with the surfaces of the two limit blocks 16 .

The specific implementation method of this embodiment is: by setting the second motor 301, the supporting plate 302 and the two housings 303 for use together, under the action of the second motor 301, the supporting plate 302 and the two housings 303, it is convenient to The user rotates the circuit board clamped in the clamping mechanism 4, so that the circuit board can be quickly and polygonally polished under the action of the grinding device 17, so that the rotating circuit board can be in contact with the grinding device 17 , the multi-sided polishing of the circuit board has achieved the purpose of facilitating the user to drive the circuit board to rotate and polish under the action of the second motor 301, the support plate 302 and the two housings 303, and at the same time under the action of the movable hole 19, The movement of the connecting rod 402 is provided with a track, and the surface connecting rod 402 is stuck when moving, so as to avoid the template that the connecting rod 402 cannot move, and at the same time provide a track for the movement of the spring 403 under the action of the movable groove 18, Prevent the spring 403 from being stuck when moving, and achieve the purpose of preventing the spring 403 from being unable to move. At the same time, under the action of the baffle plate 14 and the limit block 16, the spring 403 is limited to avoid the influence of the spring 403 on the external force. The bottom is separated from the two baffles 14, so that the splint 401 cannot clamp the circuit board, and the purpose of preventing the spring 403 from being separated from the baffle 14 is achieved.

Embodiment Three

1-8, the clamping mechanism 4 includes a splint 401, a connecting rod 402 and a spring 403. The splint 401 is arranged on one side of the housing 303, and the side of the splint 401 near the connecting rod 402 is fixedly connected to the connecting rod 402. The rod 402 penetrates to the inner wall of the housing 303 , and the spring 403 is disposed in the inner cavity of the housing 303 .

The specific implementation of this embodiment is: through the joint use of the splint 401, the connecting rod 402 and the spring 403, the circuit board can be clamped under the action of the splint 401, the connecting rod 402 and the spring 403, and the circuit board can be prevented from being polished. The occurrence of detachment occurs in the middle, thereby avoiding affecting the user's polishing of the circuit board, achieving the clamping of the circuit board and increasing the stability and firmness of the circuit board during polishing.

Embodiment four

Please refer to Figs. 1-8, the specific implementation method of this embodiment is: by setting the first motor 201, the protective shell 202, the connecting plate 203, the first gear rod 204 and the second gear rod 205 to be used together, it can be used in the first Under the action of motor 201, protective shell 202, connecting plate 203, first gear lever 204 and second gear lever 205, the rotation of first motor 201 drives first gear lever 204 to rotate, while first gear lever 204 rotates Drive the second gear rod 205 to rotate, and the second rotating rod rotates to drive the connecting plate 203 to rotate. After the connecting plate 203 rotates, it drives the rotating mechanism 3 and the clamping mechanism 4 fixed in the connecting plate 203 to rotate, and is placed in the clamping The circuit board in the mechanism 4 is rotated under the action of the rotating mechanism 3, and multiple corners of the circuit board are polished, thereby increasing the efficiency of the circuit board during polishing, and reducing the working pressure of the user when polishing the circuit board , to bring a certain degree of convenience to the user in the processing of the circuit board, and at the same time, under the action of the first bearing 12 and the second bearing 13, the friction force of the first gear rod 204 and the second gear rod 205 when rotating is reduced, Thereby, the efficiency of the first gear lever 204 and the second gear lever 205 when rotating is increased, and at the same time, the first gear lever 204 and the second gear lever 205 are protected under the action of the protective door 9 to reduce dust from entering the protective shell 202 The impact on the first gear and the second gear, thereby avoiding the situation that the first gear lever 204 and the second gear lever 205 are affected by dust and the transmission effect is not good, and at the same time, it is convenient for the user under the action of the rotating shaft 10 Open the protective door 9 to facilitate the addition of lubricating oil into the first gear lever 204 and the second gear lever 205 to lubricate the first gear lever 204 and the second gear lever 205, thereby achieving the purpose of the user-friendly protective door 9 At the same time, under the action of the knob 11, the protective door 9 is limited to prevent the protective door 9 from being opened under the influence of an external force, thereby affecting the first gear rod 204 and the second gear rod 205 in the protective shell 202, so that Dust enters in the protective shell 202 and avoids being affected to the first gear lever 204 and the second gear lever 205, reaching the purpose that the user conveniently limits the protective door 9, by setting the second motor 301, the support plate 302 and the two The combined use of the two housings 303 can facilitate the user to rotate the circuit board clamped in the clamping mechanism 4 under the action of the second motor 301, the support plate 302 and the two housings 303, thereby making the circuit board The board can be quickly and multilaterally polished under the action of the grinding device 17, so that the rotating circuit board can be in contact with the grinding device 17, and the circuit board is polished multilaterally, which is convenient for the user. Under the action of the board 302 and the two shells 303, the purpose of driving the circuit board to rotate and polish, and at the same time, under the action of the movable hole 19, to provide a track for the movement of the connecting rod 402, and the surface connecting rod 402 is stuck when moving Occurs, to avoid the template that the connecting rod 402 cannot move, and at the same time provide a track for the movement of the spring 403 under the action of the movable groove 18, to prevent the spring 403 from being stuck when moving, and to avoid the spring 403 from being unable to move. The purpose is to limit the spring 403 under the action of the baffle 14 and the stop block 16 at the same time, so as to prevent the spring 403 from being separated from the two baffles 14 under the influence of external force, so that the splint 401 cannot clamp the circuit board, The purpose of preventing the spring 403 from detaching from the baffle plate 14 is achieved. Through the joint use of the splint 401, the connecting rod 402 and the spring 403, the circuit board can be clamped under the action of the splint 401, the connecting rod 402 and the spring 403, and the circuit board can be avoided. The board is detached during the grinding process, thereby avoiding affecting the user's grinding of the circuit board, achieving the clamping of the circuit board and increasing the stability and firmness of the circuit board during grinding.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A circuit board edging machine capable of continuous grinding at corners, comprising a circuit board edging machine body (1), one side of the circuit board edging machine body (1) is provided with two door panels (6), and the door panels One side of (6) is fixedly connected with two hinges (7), and the connection between the door panel (6) and the circuit board edger body (1) is connected by hinges (7), and the circuit board grinder The top of the edging machine body (1) is provided with a grinding device (17), and the bottom of the circuit board edging machine body (1) is fixedly equipped with four support legs (5), and it is characterized in that: the circuit board edging The top of the machine body (1) is fixedly connected with a fixed plate (8), the top of the fixed plate (8) is provided with a transmission mechanism (2), and the top of the transmission mechanism (2) is provided with two rotating mechanisms ( 3), the top of the rotating mechanism (3) is provided with two clamping mechanisms (4); The transmission mechanism (2) includes a first motor (201), a protective case (202), a connecting plate (203), a first gear rod (204) and a second gear rod (205), and the protective case (202) Fixedly connected to the top of the fixed plate (8), the first motor (201) is fixedly installed on the top of the protective shell (202), and the output end of the first motor (201) penetrates to the inner wall of the protective shell (202) And be fixedly connected with the first gear rod (204), the second gear rod (205) is set to be rotatably connected to the inner wall of the protective case (202), the first gear rod (204) and the second gear rod (205) Mesh connection, one end of the second gear rod (205) passes through the protective shell (202) and the fixed plate (8) in turn; The rotating mechanism (3) includes a second motor (301), a support plate (302) and two housings (303), the second motor (301) is fixedly connected to the bottom of the connecting plate (203), the The output end of the second motor (301) penetrates to the top of the connection plate (203) and is fixedly connected to the support plate (302), and both housings (303) are fixedly connected to the top of the support plate (302); The clamping mechanism (4) includes a splint (401), a connecting rod (402) and a spring (403), the splint (401) is arranged on one side of the housing (303), and the splint (401) is close to the connection One side of the rod (402) is fixedly connected with the connecting rod (402), the connecting rod (402) penetrates to the inner wall of the casing (303), and the spring (403) is arranged in the inner cavity of the casing (303). 2. The circuit board edging machine capable of continuously grinding corners according to claim 1, characterized in that: the inner wall of the housing (303) is provided with two baffles (14), and the two baffles (14) Limiting blocks (16) are fixedly connected between the opposite sides, and one side of the baffle (14) close to the connecting rod (402) is fixedly connected to the connecting rod (402). 3. The circuit board edging machine capable of continuous grinding according to claim 2, characterized in that: a support rod (15) is fixedly connected to one side of the other said baffle plate (14), said support rod ( One end of 15) is fixedly connected with the inner wall of the housing (303), and the inner wall of the spring (403) is sheathed with the surfaces of the two limiting blocks (16). 4. The circuit board edging machine capable of continuously grinding corners according to claim 1, characterized in that: a movable hole (19) is opened on one side of the housing (303), and the movable hole (19) The inner chamber is movably connected with the surface of the connecting rod (402). 5. The circuit board edging machine capable of continuously grinding corners according to claim 1, characterized in that: the inner wall of the housing (303) is provided with a movable groove (18), and the inner wall of the movable groove (18) The cavity is movably connected with the spring (403). 6. The circuit board edging machine capable of continuous grinding according to claim 1, characterized in that two first bearings (12) are sheathed on the surface of the first gear rod (204), and the first The surface of a bearing (12) is fixedly connected with the inner wall of the protective shell (202). 7. The circuit board edging machine capable of continuous grinding according to claim 1, characterized in that: the surface of the second gear rod (205) is sleeved with a second bearing (13), and the second bearing The surface of (13) is fixedly connected with the inner wall of the protective shell (202). 8. The circuit board edging machine capable of continuous grinding of corners according to claim 1, characterized in that: a protective door (9) is provided on one side of the protective shell (202), and the protective door (9) is used for for adding lubricating oil. 9. The circuit board edging machine capable of continuous grinding of corners according to claim 8, characterized in that: one side of the protective door (9) is fixedly connected with a rotating shaft (10), and the fixed plate (8) and The connecting part of the protective shell (202) is rotationally connected through the rotating shaft (10). 10. The circuit board edging machine capable of continuous grinding according to claim 8, characterized in that: a knob (11) is movably connected to one side of the protective door (9), and one end of the knob (11) Pass to one side of the protective door (9) and be threadedly connected with the inner wall of the protective shell (202).

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