CN216504144U

CN216504144U - Two-sided PCB's of polishing device

Info

Publication number: CN216504144U
Application number: CN202123261975.4U
Authority: CN
Inventors: 李清华; 孙洋强; 刘平; 杨海军; 牟玉贵; 邓岚; 胡志强
Original assignee: Inno Circuits Ltd
Current assignee: Inno Circuits Ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-05-13
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a device for polishing a PCB (printed circuit board) on two sides, which comprises a workbench (1) and a substrate fixing mechanism, the substrate fixing mechanism comprises a supporting seat (2), the supporting seat (2) is longitudinally arranged and fixedly arranged on the table surface of the workbench (1), a groove (3) for accommodating a substrate is formed in the top surface of the supporting seat (2), the groove (3) is arranged along the length direction of the supporting seat (2), still set firmly portal frame (4) of erectting in supporting seat (2) top on workstation (1), be provided with left grinding machanism (5) and right grinding machanism (6) on the crossbeam of portal frame (4), left grinding machanism (5) include lift cylinder (7), channel-section steel (8) and motor (9), and the piston rod of lift cylinder (7) runs through the crossbeam setting, and the opening of channel-section steel (8) sets up towards supporting seat (2) right. The beneficial effects of the utility model are: the polishing efficiency of the substrate is improved, the working strength of workers is reduced, and the operation is simple.

Description

Two-sided PCB's of polishing device

Technical Field

The utility model relates to the technical field of double-sided grinding of circuit boards, in particular to a device for double-sided grinding of a PCB.

Background

With the continuous development of the electronic industry, the usage amount of the circuit board is also increasing, and the circuit board is not only applied to electronic equipment, but also applied to a machine case of a machine tool. The circuit board comprises a substrate and circuit layers, the circuit layers are formed on two surfaces of the substrate, and the substrate plays a role in supporting the circuit layers. Before the substrate is used for producing the PCB, workers need to grind burrs attached to two surfaces of the circuit board, so that the circuit layers can be formed on the two surfaces of the substrate. When the existing method for polishing the substrate is used, the substrate is fixed on a polishing table of a polishing machine by adopting a pressing plate clamping mechanism, then the top surface of the substrate is polished by using a grinding wheel of the polishing machine, burrs attached to the top surface of the substrate are polished by the grinding wheel, so that polishing of one surface of the substrate is realized, then the pressing plate clamping mechanism is loosened by a worker, the substrate is turned over for 180 degrees, the operation is repeated, the other surface of the substrate can be polished, and finally polishing of two surfaces of the substrate is realized. However, although this method can polish both sides of the substrate, in actual production, workers have the following technical defects: 1. need adopt clamp plate clamping mechanism twice to fix the base plate, and need divide into two faces and polish respectively, this has increased the time of polishing undoubtedly, very big reduction the efficiency of polishing of base plate, in addition, frock base plate complex operation has increased workman's working strength. 2. The area of the grinding wheel is smaller than that of the substrate, so that the grinding wheel needs to feed back and forth on the surface of the substrate, which undoubtedly further reduces the grinding efficiency of the substrate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a double-side PCB polishing device which is compact in structure, improves the substrate polishing efficiency, lightens the working strength of workers and is simple to operate.

The purpose of the utility model is realized by the following technical scheme: a device for polishing PCBs on two sides comprises a workbench and a substrate fixing mechanism, wherein the substrate fixing mechanism comprises a supporting seat, the supporting seat is longitudinally arranged and fixedly arranged on the table top of the workbench, a groove for accommodating a substrate is formed in the top surface of the supporting seat, the groove is formed in the length direction of the supporting seat, a portal frame erected above the supporting seat is further fixedly arranged on the workbench, a left polishing mechanism and a right polishing mechanism are arranged on a cross beam of the portal frame, the left polishing mechanism comprises a lifting oil cylinder, a channel steel and a motor, the lifting oil cylinder is fixedly arranged on the cross beam of the portal frame, a piston rod of the lifting oil cylinder penetrates through the cross beam, an opening of the channel steel is arranged towards the supporting seat rightwards, the channel steel is fixedly arranged on an acting end of the piston rod of the lifting oil cylinder, a driving roller and a driven roller are rotatably arranged in the channel steel through a rotating shaft, an abrasive belt is arranged between the driving roller and the driven roller, the motor is fixedly arranged on the outer wall of the channel steel, an output shaft of the motor is connected with a rotating shaft of the driving roller, the right end of an abrasive belt of the left grinding mechanism is flush with the left end face of the groove, and the left end of an abrasive belt of the right grinding mechanism is flush with the right end face of the groove.

And the left grinding mechanism and the right grinding mechanism are arranged in bilateral symmetry about the supporting seat.

The outer side wall of the channel steel is welded with a connecting plate, and the connecting plate is welded on the action end of a piston rod of the lifting oil cylinder.

The horizontal width of the groove is equal to the thickness of the substrate, and the longitudinal width of the groove is equal to the width of the substrate.

A through groove is formed in a cross beam of the portal frame, and a piston rod of the lifting oil cylinder penetrates through the through groove.

The device also comprises a controller, wherein the controller is electrically connected with the motor and the electromagnetic valve of the lifting oil cylinder through signal wires.

The utility model has the following advantages: compact structure, improvement base plate efficiency of polishing, alleviate workman working strength, easy operation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic view of a tooling positioning substrate;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

FIG. 5 is a schematic illustration of a belt sanding an end surface of a substrate;

in the figure, 1-workbench, 2-support base, 3-groove, 4-portal frame, 5-left grinding mechanism, 6-right grinding mechanism, 7-lifting oil cylinder, 8-channel steel, 9-motor, 10-driving roller, 11-driven roller, 12-abrasive belt, 13-connecting plate and 14-substrate.

Detailed Description

The utility model will be further described with reference to the accompanying drawings, without limiting the scope of the utility model to the following:

as shown in fig. 1-2, a device for double-sided polishing of a PCB comprises a workbench 1 and a substrate fixing mechanism, wherein the substrate fixing mechanism comprises a supporting seat 2, the supporting seat 2 is longitudinally arranged and fixedly arranged on a table top of the workbench 1, a groove 3 for accommodating a substrate is arranged on the top surface of the supporting seat 2, the groove 3 is arranged along the length direction of the supporting seat 2, a portal frame 4 erected above the supporting seat 2 is further fixedly arranged on the workbench 1, a beam of the portal frame 4 is provided with a left polishing mechanism 5 and a right polishing mechanism 6, the left polishing mechanism 5 and the right polishing mechanism 6 are arranged in bilateral symmetry with respect to the supporting seat 2, the left polishing mechanism 5 comprises a lift cylinder 7, a channel steel 8 and a motor 9, the lift cylinder 7 is fixedly arranged on the beam of the portal frame 4, a piston rod of the lift cylinder 7 penetrates through the beam, an opening of the channel steel 8 is arranged towards the right side of the supporting seat 2, channel-section steel 8 sets firmly on the effect end of lift cylinder 7 piston rod, installs initiative roller 10 and driven roller 11 through the pivot rotation in the channel-section steel 8, installs abrasive band 12 between initiative roller 10 and the driven roller 11, and motor 9 sets firmly on the outer wall of channel-section steel 8, and the output shaft of motor 9 is connected with a pivot of initiative roller 10, the right-hand member of abrasive band 12 of left side grinding machanism 5 and the left end face parallel and level of recess 3, the left end portion of the abrasive band 12 of right side grinding machanism 6 and the right-hand member face parallel and level of recess 3.

The welding has connecting plate 13 on the lateral wall of channel-section steel 8, connecting plate 13 welds and serves in the effect of lift cylinder 7 piston rod, the horizontal width of recess 3 equals the thickness of base plate, and the longitudinal width of recess 3 equals the width of base plate, logical groove has been seted up on portal frame 4's the crossbeam, lift cylinder 7's piston rod runs through logical groove setting. The device also comprises a controller, wherein the controller is electrically connected with the motor 9 and an electromagnetic valve of the lifting oil cylinder 7 through signal wires, a worker can control the extension or retraction of a piston rod of the lifting oil cylinder 7 through the controller, and meanwhile, the controller can also control the starting or closing of the motor 9.

The working process of the utility model is as follows:

s1, fixing the substrate by the tool, and specifically operating the steps as follows:

s11, embedding the lower end part of the substrate 14 into the groove 3 of the support seat 2, wherein the right end part of the abrasive belt 12 of the left grinding mechanism 5 is flush with the left end face of the substrate 14, and the left end part of the abrasive belt 12 of the right grinding mechanism 6 is flush with the right end face of the substrate 14, so that the rapid tooling positioning of the substrate 14 is realized as shown in FIGS. 3-4; therefore, compare the tradition and adopt clamp plate clamping mechanism to fix the base plate, very big shortening fixed time, improved the efficiency of polishing of base plate.

S2, polishing the substrate, wherein the method comprises the following specific operation steps:

s21, a worker turns on the motor 9 of the left grinding mechanism 5, the motor 9 drives the driving roller 10 to rotate clockwise, the abrasive belt 12 rotates clockwise, meanwhile, the worker turns on the motor 9 of the right grinding mechanism 6, the motor 9 drives the driving roller 10 to rotate anticlockwise, and the abrasive belt 12 rotates anticlockwise;

s22, a worker controls a piston rod of a lifting oil cylinder 7 of a left grinding mechanism 5 to extend downwards, the piston rod drives a channel steel 8 to move downwards, an abrasive belt 12 moves downwards along the left end face of a substrate 14, the rotating abrasive belt 12 grinds burrs on the left end face of the substrate 14, meanwhile, the worker controls a piston rod of the lifting oil cylinder 7 of a right grinding mechanism 6 to extend downwards, the piston rod drives the channel steel 8 to move downwards, the abrasive belt 12 moves downwards along the right end face of the substrate 14, the rotating abrasive belt 12 grinds burrs on the right end face of the substrate 14 as shown in figure 5, and when the two abrasive belts 12 are close to a supporting seat 2 downwards, the worker controls piston rods of the two lifting oil cylinders 7 to retract upwards simultaneously;

s23, the worker turns the substrate 14 by 180 degrees, inserts the other end of the substrate 14 into the groove 3, and the step S22 is repeated to finish the simultaneous polishing of the two surfaces of the substrate 14, so that the polishing of the two surfaces of the substrate is finally realized; therefore, the device has realized polishing simultaneously two faces of base plate 14, compares two traditional processes and polishes respectively, very big shortening the time of polishing, further improvement the efficiency of polishing of base plate. In addition, because the width of abrasive belt 12 is greater than the width of substrate 14, one side of substrate 14 can be polished after abrasive belt 12 passes through substrate 14, and compared with the conventional polishing using a grinding wheel, the polishing efficiency is further improved.

S3, after polishing, the piston rods of the two lifting oil cylinders 7 are controlled to retract upwards, the piston rods drive the channel steel 8 to move upwards, the channel steel 8 drives the abrasive belt 12 to move upwards, after the piston rods retract completely, a worker can take the polished substrate 14 out of the groove 3, and the double-sided polishing of the substrate can be continuously realized by repeating the above operations.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a two-sided PCB's of polishing device which characterized in that: the automatic polishing device comprises a workbench (1) and a substrate fixing mechanism, wherein the substrate fixing mechanism comprises a supporting seat (2), the supporting seat (2) is longitudinally arranged and fixedly arranged on the table top of the workbench (1), a groove (3) used for accommodating a substrate is formed in the top surface of the supporting seat (2), the groove (3) is arranged along the length direction of the supporting seat (2), a portal frame (4) erected above the supporting seat (2) is further fixedly arranged on the workbench (1), a left polishing mechanism (5) and a right polishing mechanism (6) are arranged on a cross beam of the portal frame (4), the left polishing mechanism (5) comprises a lifting oil cylinder (7), channel steel (8) and a motor (9), the lifting oil cylinder (7) is fixedly arranged on the cross beam of the portal frame (4), a piston rod of the lifting oil cylinder (7) penetrates through the cross beam, an opening of the channel steel (8) is arranged towards the supporting seat (2) rightwards, channel-section steel (8) set firmly on the effect of lift cylinder (7) piston rod is served, installs initiative roller (10) and driven roller (11) through the pivot rotation in channel-section steel (8), installs abrasive band (12) between initiative roller (10) and driven roller (11), and motor (9) set firmly on the outer wall of channel-section steel (8), and the output shaft of motor (9) is connected with a pivot of initiative roller (10), the right-hand member of abrasive band (12) of left side grinding machanism (5) and the left end face parallel and level of recess (3), the left end portion of abrasive band (12) of right side grinding machanism (6) and the right end face parallel and level of recess (3).

2. A device for double side grinding of PCB as claimed in claim 1, wherein: the left grinding mechanism (5) and the right grinding mechanism (6) are arranged in bilateral symmetry relative to the supporting seat (2).

3. A device for double side grinding of PCB as claimed in claim 1, wherein: the outer side wall of the channel steel (8) is welded with a connecting plate (13), and the connecting plate (13) is welded on the action end of a piston rod of the lifting oil cylinder (7).

4. A device for double side grinding of PCB as claimed in claim 1, wherein: the horizontal width of the groove (3) is equal to the thickness of the substrate, and the longitudinal width of the groove (3) is equal to the width of the substrate.

5. A device for double side grinding of PCB as claimed in claim 1, wherein: a through groove is formed in the cross beam of the portal frame (4), and a piston rod of the lifting oil cylinder (7) penetrates through the through groove.

6. A device for double side grinding of PCB as claimed in claim 1, wherein: the device also comprises a controller, wherein the controller is electrically connected with the motor (9) and the electromagnetic valve of the lifting oil cylinder (7) through signal wires.