CN114952580A

CN114952580A - Grinding device for electronic machining

Info

Publication number: CN114952580A
Application number: CN202210920040.2A
Authority: CN
Inventors: 陈宁; 王盼盼
Original assignee: Jiangsu Zhongshang Robot Technology Co ltd
Current assignee: Jiangsu Zhongshang Robot Technology Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-08-30

Abstract

The invention discloses a polishing device for electronic processing, which comprises an installation box, a hollow shaft, a polishing disc sleeved at the lower end of the hollow shaft, a sleeve sleeved outside the polishing disc and rotatably connected with the hollow shaft, and an annular channel formed between the outer wall of the polishing disc and the inner wall of the sleeve; according to the invention, the grinding disc with the central cavity, the hollow shaft communicated with the central cavity and communicated with the grinding fluid supply mechanism, the sleeve arranged outside the grinding disc and the suction pipe communicated with the sleeve and communicated with an external industrial dust collector are adopted, grinding fluid is injected from the middle part of the grinding disc, so that the grinding fluid is uniformly dispersed to the grinding surface at the lower end of the grinding disc, then the sleeve is used for carrying out negative pressure suction on the grinding fluid moving to the edge of the grinding disc, so that the grinding fluid flows along the surface of the grinding disc to infiltrate the whole grinding disc, the temperature difference of each position of the grinding disc is small, the deformation caused by the temperature difference is reduced, and the service life of the grinding disc is prolonged.

Description

Grinding device for electronic machining

Technical Field

The invention relates to the field of electronic processing equipment, in particular to a polishing device for electronic processing.

Background

In the electronic processing process, the circuit board needs to be polished, the traditional polishing device adopts a spray pipe arranged on one side of a polishing disc to spray grinding liquid in the polishing process, in the grinding processing process, cutting, scratching and scratching are carried out between a grinding wheel and a material, a large amount of grinding heat is generated, the temperature of a grinding area can reach about 400-1000 ℃, the material can deform and burn at high temperature, the grinding wheel can be seriously worn, and the grinding quality is reduced. In a common situation, grinding fluid is used in grinding, so that a large amount of grinding heat is taken away, and the temperature of a grinding area is reduced.

But traditional spray tube sprays grinding fluid and can only spray grinding fluid to the side of the dish of polishing, and grinding fluid can only cool down and clean piece dust to the lower terminal surface of the dish of polishing, and grinding fluid trickles at will easily on the circuit board, causes the circuit board to be polluted, and simultaneously, the dish of polishing is only cooled down in the bottom, has great difference in temperature between each part for the dish of polishing warp easily, has reduced life.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a polishing device for electronic processing, which can inject grinding fluid from the middle part of a polishing disc and then extract the grinding fluid from the edge of the polishing disc, so that the grinding fluid can completely infiltrate the whole polishing disc, the temperature difference of each position of the polishing disc is reduced, and the service life of the polishing disc is prolonged.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A polishing device for electronic machining comprises an installation box, a hollow shaft vertically penetrating through the installation box and rotatably connected with the installation box, a driving motor installed in the installation box and connected with the hollow shaft through a transmission gear set in a transmission manner, a polishing disc sleeved on the outer side of the lower end of the hollow shaft and fixedly connected with the hollow shaft, a central cavity arranged at the central position of the lower end of the polishing disc and communicated with the hollow shaft, a sleeve sleeved on the outer side of the polishing disc and rotatably connected with the hollow shaft, and a support rod connecting the sleeve and the installation box;

an annular channel is formed between the outer wall of the polishing disc and the inner wall of the sleeve; the upper end of the hollow shaft is communicated with a liquid inlet pipe through a rotary joint, the liquid inlet pipe is communicated with an external grinding liquid supply mechanism, the sleeve is communicated with a liquid pumping pipe, and the liquid pumping pipe is communicated with an external industrial dust collector.

Further, the polishing disc is of a disc-shaped structure, the central cavity comprises a through hole formed in the upper portion of the polishing disc and penetrated by the hollow shaft, and a cylindrical hole communicated with the lower end of the through hole and having a radius larger than that of the through hole, the lower end of the hollow shaft is fixedly connected with a mounting ring which is integrally formed with the hollow shaft and is embedded in the cylindrical hole, a sealing ring embedded in the cylindrical hole is abutted to the upper portion of the mounting ring, and a fixing bolt connected with the top wall of the cylindrical hole in a threaded mode penetrates through the mounting ring.

Further, the center cavity still includes and communicates and extend to the bell mouth of terminal surface under the mill with cylinder hole lower extreme, is equipped with the diffuser plate that sets up with hollow shaft lower extreme opening phase in the bell mouth, and the diffuser plate is equipped with the annular groove that supports the both ends height in the middle of, and the diffuser plate passes through installation pole and hollow shaft inner wall fixed connection.

Furthermore, the installation box is a hollow rectangular box structure, and the transmission gear set comprises a group of horizontally arranged and mutually meshed spur gears.

Further, the sleeve comprises a lower cylinder sleeved outside the polishing disc and an upper cylinder sleeved outside the hollow shaft and communicated with the lower cylinder; the lower cylinder is a hollow cylinder with an opening at the lower end.

Furthermore, the upper barrel is rotatably connected with the hollow shaft, and a shaft seal is arranged at the joint of the upper barrel and the hollow shaft.

Further, the height of the annular edge at the lower end of the sleeve is greater than the height of the lower end face of the polishing disc.

Furthermore, the hollow shaft is a hollow rotating shaft which is provided with openings at the upper end and the lower end and is arranged vertically.

Furthermore, the diffusion plate is of a disc-shaped structure, and the annular groove is formed in the upper end face of the diffusion plate.

Furthermore, the installation pole is the T type, and the installation pole includes the vertical pole with diffuser plate fixed connection and with vertical pole upper end fixed connection and both ends and hollow shaft inner wall fixed connection's horizon bar.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) according to the invention, the grinding disc with the central cavity, the hollow shaft communicated with the central cavity and communicated with the grinding fluid supply mechanism, the sleeve arranged outside the grinding disc and the suction pipe communicated with the sleeve and communicated with an external industrial dust collector are adopted, grinding fluid is injected from the middle part of the grinding disc, so that the grinding fluid is uniformly dispersed to the grinding surface at the lower end of the grinding disc, then the sleeve is used for carrying out negative pressure suction on the grinding fluid moving to the edge of the grinding disc, so that the grinding fluid flows along the surface of the grinding disc to infiltrate the whole grinding disc, the temperature difference of each position of the grinding disc is small, the deformation caused by the temperature difference is reduced, and the service life of the grinding disc is prolonged.

(2) The sleeve and the suction pipe are sleeved outside the polishing disc, so that the grinding fluid is sucked in time, the grinding fluid is prevented from flowing randomly to pollute the circuit board, and the cleanliness of the polishing environment is improved.

(3) According to the invention, the mounting ring, the sealing ring, the through hole, the cylindrical hole and the fixing bolt are arranged, so that the polishing disc is convenient to disassemble, the sealing performance of the mounting positions of the hollow shaft and the polishing disc is ensured, and the grinding fluid suction effect is ensured.

(4) According to the invention, the diffusion plate and the conical hole which are arranged opposite to the hollow shaft are arranged, so that grinding fluid flowing downwards impacts the diffusion plate and then uniformly washes the inner wall of the conical hole and then uniformly diffuses along the inner wall on the lower end face of the polishing disc, and the distribution uniformity of the grinding fluid is improved.

Drawings

FIG. 1 is a perspective view of the front side view of the present invention;

FIG. 2 is a perspective view of a rear side view of the present invention;

FIG. 3 is a schematic longitudinal sectional view of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;

FIG. 5 is an enlarged view of the structure at B in FIG. 3;

FIG. 6 is a schematic view of the assembly of the polishing disc and the sleeve of the present invention;

FIG. 7 is a schematic bottom view of the polishing disc of the present invention;

FIG. 8 is a schematic cross-sectional view of the polishing disc of the present invention;

FIG. 9 is a schematic view of the sleeve of the present invention;

FIG. 10 is a cross-sectional view of the sleeve of the present invention;

fig. 11 is a schematic perspective view of a diffuser plate according to the present invention.

The numbering in the figures illustrates: 1. installing a box; 2. a hollow shaft; 3. grinding disc; 301. a central lumen; 3011. a through hole; 3012. a cylindrical bore; 3013. a tapered hole; 4. a rotary joint; 5. a liquid inlet pipe; 6. a sleeve; 601. a lower barrel; 602. feeding the cylinder; 7. a liquid pumping pipe; 8. a drive gear set; 9. a drive motor; 10. a support bar; 11. a mounting ring; 12. a seal ring; 13. fixing the bolt; 14. a diffusion plate; 1401. an annular groove; 15. mounting a rod; 16. and (4) sealing the shaft.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Referring to fig. 1-11, a polishing device for electronic processing comprises an installation box 1, a hollow shaft 2 vertically penetrating through the installation box 1 and rotatably connected with the installation box 1, a driving motor 9 installed in the installation box 1 and connected with the hollow shaft 2 through a transmission gear set 8 for transmission, a polishing disc 3 sleeved on the outer side of the lower end of the hollow shaft 2 and fixedly connected with the hollow shaft 2, a central cavity 301 arranged at the central position of the lower end of the polishing disc 3 and communicated with the hollow shaft 2, a sleeve 6 sleeved on the outer side of the polishing disc 3 and rotatably connected with the hollow shaft 2, and a support rod 10 connecting the sleeve 6 with the installation box 1;

an annular channel is formed between the outer wall of the polishing disc 3 and the inner wall of the sleeve 6; the upper end of the hollow shaft 2 is communicated with a liquid inlet pipe 5 through a rotary joint 4, the liquid inlet pipe 5 is communicated with an external grinding liquid supply mechanism, a sleeve 6 is communicated with a liquid pumping pipe 7, and the liquid pumping pipe 7 is communicated with an external industrial dust collector.

Specifically, when a circuit board is polished, the external grinding fluid supply mechanism and the industrial dust collector are started, so that the polishing disc 3 is in contact with the circuit board to be polished, the driving motor 9 is started, the driving motor 9 drives the hollow shaft 2 and the polishing disc 3 at the lower part of the hollow shaft to rotate through the transmission gear set 8, the polishing operation is performed, the grinding fluid enters the hollow shaft 2 through the fluid inlet pipe 5 and the rotary joint 4, then enters the central cavity 301 of the polishing disc 3 through the hollow shaft 2, then is soaked between the polishing disc 3 and the circuit board, the grinding fluid moves to the edge of the polishing disc 3 under the action of centrifugal force, the sleeve 6 is sucked by negative pressure generated by the external industrial dust collector through the fluid pumping pipe 7, the sleeve 6 for the negative pressure sucks the grinding fluid containing the chipped powder moving to the edge of the polishing disc 3, and the sucked grinding fluid sequentially passes through the circumferential side wall and the upper end face of the polishing disc 3, grinding fluid soaks whole mill 3 for the temperature difference of each position of mill 3 is less, reduces the deformation of mill 3, prolongs the life of mill 3, simultaneously, avoids grinding fluid trickling on the circuit board at will, makes the environment of polishing more sanitary clean, and the while is along with grinding fluid to the piece dust of producing of polishing in being sucked the industry dust catcher, improves the quality of polishing.

It should be noted that, install case 1 and install on outside arm, industrial dust collector and grinding fluid supply mechanism are prior art, and wherein grinding fluid supply mechanism includes transfer pump and liquid storage pot, and this application is no longer repeated.

In this embodiment, the installation box 1 is a hollow rectangular box structure, and the transmission gear set 8 includes a set of horizontally arranged spur gears engaged with each other.

Specifically, the driving motor 9 drives the hollow shaft 2 to rotate through the transmission gear set 8.

Referring to fig. 4, 7 and 8, in another embodiment of the present invention, the polishing disc 3 is a disc-shaped structure, the central cavity 301 includes a through hole 3011 formed in the upper portion of the polishing disc 3 and through which the hollow shaft 2 passes, a cylindrical hole 3012 communicating with the lower end of the through hole 3011 and having a radius larger than that of the through hole 3011, a mounting ring 11 integrally formed with the hollow shaft 2 and nested in the cylindrical hole 3012 is fixedly connected to the lower end of the hollow shaft 2, a sealing ring 12 nested in the cylindrical hole 3012 is abutted against the upper portion of the mounting ring 11, and a fixing bolt 13 threadedly connected to the top wall of the cylindrical hole 3012 is penetrated through the mounting ring 11.

Specifically, the grinding disc 3 and the hollow shaft 2 are fixed, and meanwhile, the sealing ring 12 enables the joint of the central cavity 301 and the hollow shaft 2 to have good sealing performance.

In this embodiment, the sleeve 6 includes a lower tube 601 sleeved outside the polishing disc 3, and an upper tube 602 sleeved outside the hollow shaft 2 and communicated with the lower tube 601; the radius of the upper cylinder 602 is smaller than that of the lower cylinder 601, and the lower cylinder 601 is a hollow cylinder with an opening at the lower end.

Specifically, the sleeve 6 arranged on the outer side of the polishing disc 3 is used for conducting negative pressure suction on the grinding fluid discharged to the edge of the polishing disc 3, the grinding fluid is efficiently collected, and splashing and turbulence of the grinding fluid are avoided.

In the present embodiment, the upper cylinder 602 is rotatably connected to the hollow shaft 2 and the connection is provided with a shaft seal 16.

In particular, the sealing performance of the joint of the sleeve 6 and the hollow shaft 2 is ensured, and the negative pressure suction effect is ensured.

In this embodiment, the height of the annular edge of the lower end of the sleeve 6 is greater than the height of the lower end surface of the polishing disc 3.

In particular, contact of the sleeve 6 with the circuit board is avoided.

In this embodiment, the hollow shaft 2 is a hollow shaft with openings at the upper and lower ends and is vertically disposed.

In this embodiment, the driving motor 9 is vertically disposed in the installation box 1 and the bottom of the driving motor is provided with a mounting rack for fixing on the bottom plate of the installation box 1.

Specifically, the space occupation is reduced by vertically arranging the driving motor 9.

Referring to fig. 4, fig. 7 and fig. 8, and in another embodiment of the present invention, the central cavity 301 further includes a tapered hole 3013 communicating with the lower end of the cylindrical hole 3012 and extending to the lower end surface of the polishing disc 3, a diffuser plate 14 disposed opposite to the lower end opening of the hollow shaft 2 is disposed in the tapered hole 3013, the diffuser plate 14 is provided with an annular recess 1401 having a middle portion and two high ends, and the diffuser plate 14 is fixedly connected to the inner wall of the hollow shaft 2 through a mounting rod 15.

Specifically, when the diffusion plate 14 is impacted downwards by the grinding fluid in the hollow shaft 2, under the guiding action of the annular grooves with two high ends, the grinding fluid uniformly scours the tapered side walls of the tapered holes 3013, and simultaneously, under the action of the rotating centrifugal force of the polishing disc 3, the grinding fluid is uniformly dispersed on the lower end face of the polishing disc 3, so that the grinding fluid is more uniformly distributed.

In the present embodiment, the diffusion plate 14 has a disk-shaped structure, and the annular recess 1401 is opened on the upper end surface of the diffusion plate 14.

Particularly, the grinding fluid is dispersed more uniformly.

In this embodiment, the mounting rod 15 is T-shaped, and the mounting rod 15 includes a vertical rod fixedly connected to the diffusion plate 14 and a horizontal rod fixedly connected to the upper end of the vertical rod and having two ends fixedly connected to the inner wall of the hollow shaft 2.

In particular, so that the mounting rod 15 does not interfere with the downward flow of grinding fluid inside the hollow shaft 2.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A polishing device for electronic machining is characterized by comprising an installation box (1), a hollow shaft (2) vertically penetrating through the installation box (1) and rotatably connected with the installation box (1), a driving motor (9) installed in the installation box (1) and connected with the hollow shaft (2) through a transmission gear set (8) for transmission, a polishing disc (3) sleeved on the outer side of the lower end of the hollow shaft (2) and fixedly connected with the hollow shaft (2), a central cavity (301) arranged at the central position of the lower end of the polishing disc (3) and communicated with the hollow shaft (2), a sleeve (6) sleeved on the outer side of the polishing disc (3) and rotatably connected with the hollow shaft (2), and a support rod (10) connecting the sleeve (6) with the installation box (1);

an annular channel is formed between the outer wall of the polishing disc (3) and the inner wall of the sleeve (6); the upper end of the hollow shaft (2) is communicated with a liquid inlet pipe (5) through a rotary joint (4), the liquid inlet pipe (5) is communicated with an external grinding liquid supply mechanism, a sleeve (6) is communicated with a liquid pumping pipe (7), and the liquid pumping pipe (7) is communicated with an external industrial dust collector.

2. The grinding device for electronic processing according to claim 1, wherein the grinding disc (3) has a disc-shaped structure, the central cavity (301) includes a through hole (3011) provided at an upper portion of the grinding disc (3) and through which the hollow shaft (2) passes, and a cylindrical hole (3012) communicated with a lower end of the through hole (3011) and having a radius larger than that of the through hole (3011), the lower end of the hollow shaft (2) is fixedly connected with a mounting ring (11) integrally formed with the hollow shaft (2) and nested in the cylindrical hole (3012), a sealing ring (12) nested in the cylindrical hole (3012) is abutted to an upper portion of the mounting ring (11), and a fixing bolt (13) in threaded connection with a top wall of the cylindrical hole (3012) penetrates through the mounting ring (11).

3. The grinding device for electronic processing according to claim 1, wherein the central cavity (301) further comprises a conical hole (3013) communicated with the lower end of the cylindrical hole (3012) and extending to the lower end face of the grinding disc (3), a diffusion plate (14) arranged opposite to the opening at the lower end of the hollow shaft (2) is arranged in the conical hole (3013), the diffusion plate (14) is provided with an annular groove (1401) with middle part against two high ends, and the diffusion plate (14) is fixedly connected with the inner wall of the hollow shaft (2) through a mounting rod (15).

4. The polishing device for electronic processing as claimed in claim 1, wherein the mounting box (1) is a hollow rectangular box structure, and the transmission gear set (8) comprises a set of horizontally arranged spur gears which are meshed with each other.

5. The grinding device for electronic processing according to claim 2, wherein the sleeve (6) comprises a lower barrel (601) sleeved outside the grinding disc (3), and an upper barrel (602) sleeved outside the hollow shaft (2) and communicated with the lower barrel (601); the lower cylinder (601) is a hollow cylinder with an opening at the lower end.

6. The grinding device for electronic processing according to claim 5, characterized in that the upper barrel (602) is rotatably connected with the hollow shaft (2) and a shaft seal (16) is arranged at the connection.

7. A sanding device for electronic machining in accordance with claim 2 characterized in that the height of the lower annular edge of the sleeve (6) is greater than the height of the lower end surface of the sanding disc (3).

8. The polishing device for electronic processing as claimed in claim 1, wherein said hollow shaft (2) is a vertically disposed hollow shaft with openings at upper and lower ends.

9. A sanding device for electronic processing as claimed in claim 3, characterized in that the diffuser plate (14) is of disc-like configuration, with an annular recess (1401) opening in the upper end face of the diffuser plate (14).

10. A grinding device for electronic processing according to claim 3, characterized in that the mounting rods (15) are T-shaped, and the mounting rods (15) comprise vertical rods fixedly connected with the diffuser plate (14) and horizontal rods fixedly connected with the upper ends of the vertical rods and fixedly connected with the inner wall of the hollow shaft (2) at both ends.