CN214869652U

CN214869652U - Grinding and polishing machine for printed circuit board

Info

Publication number: CN214869652U
Application number: CN202121324729.6U
Authority: CN
Inventors: 曾文生
Original assignee: Huizhou Jinsheng New Electronic Technology Co ltd
Current assignee: Huizhou Jinsheng New Electronic Technology Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-11-26
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses a printed circuit board grinds machine of throwing, this printed circuit board grinds machine of throwing includes: the polishing machine comprises a bottom plate, a fixing unit, a supporting unit, a polishing unit and a driving unit; the driving unit, the fixing unit and the supporting unit are respectively arranged on the bottom plate, the fixing unit comprises a fixed bearing, and the supporting unit comprises a supporting bearing; the grinding and polishing unit comprises a grinding and polishing disk, a lead screw, a nut seat, a supporting plate and a clamping assembly, the grinding and polishing disk is arranged on the bottom plate, the lead screw is sleeved with the nut seat, the supporting plate is arranged at the top of the nut seat, the clamping assembly is arranged on the supporting plate corresponding to the grinding and polishing disk, one end of the lead screw is rotatably arranged on a supporting bearing, and the other end of the lead screw is rotatably connected to the driving unit through a fixed bearing. The driving unit drives the screw rod to rotate, and then the nut and the nut seat carry out reciprocating axial movement. The printed circuit board detection sample is contacted with the grinding and polishing disk and carries out axial reciprocating motion, so that automatic grinding and polishing work is carried out, and the purpose of improving the grinding and polishing effect is achieved.

Description

Grinding and polishing machine for printed circuit board

Technical Field

The utility model relates to a grind and throw equipment technical field, especially relate to a machine is thrown to printed circuit board grinding.

Background

Metallographic analysis is an important means for experimental research of metal materials, and the grinding and polishing quality of a metallographic specimen directly influences the observation effect of a metallographic structure. At present, the metallographic specimen is mainly ground and polished by two modes, namely manual grinding and polishing and machine grinding and polishing. When the product structure is inspected in a printed circuit board laboratory, the pre-inspection position of a sampled slice sample is calibrated in advance (usually, the best inspection position is the center position of a hole to be observed is selected), and the automatic cutting, grinding, polishing and other processing are completed through the setting and operation of a man-machine interface, so that the structure inspection requirement of the printed circuit board is met.

However, at present, the processing of cutting, grinding and polishing of the inspection sample of the printed circuit board is mainly performed by manual methods, and the center position of the hole to be inspected is also determined by visual inspection through the manual grinding process, so that the efficiency is low, and better processing accuracy and continuity are lacked.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a printed circuit board polishing machine for solving the technical problem of poor polishing effect when polishing a printed circuit board inspection sample.

A printed circuit board grinding and polishing machine comprises a bottom plate, a fixing unit, a supporting unit, a grinding and polishing unit and a driving unit; the driving unit, the fixing unit and the supporting unit are respectively arranged on the bottom plate, one end of the grinding and polishing unit is rotatably arranged on the fixing unit, the other end of the grinding and polishing unit is rotatably connected with the supporting unit, and the driving unit is rotatably connected with the grinding and polishing unit through the fixing unit;

the fixing unit comprises a fixing piece and a fixing bearing, the fixing piece is provided with a first through hole, and the fixing bearing is arranged on the fixing piece corresponding to the first through hole.

The supporting unit comprises a supporting piece and a supporting bearing, the supporting piece is provided with a second through hole corresponding to the first through hole, and the supporting bearing is arranged on the supporting piece corresponding to the second through hole.

The grinding and polishing unit comprises a grinding and polishing disk, a lead screw, a nut seat, a supporting plate and a clamping assembly, the grinding and polishing disk is arranged on the bottom plate, the lead screw is sleeved with the nut seat, the supporting plate is arranged at the top of the nut seat, the clamping assembly is arranged on one side of the top surface of the supporting plate corresponding to the grinding and polishing disk, one end of the lead screw is rotatably arranged on a supporting bearing, and the other end of the lead screw is rotatably connected to the driving unit through a fixed bearing.

In one embodiment, the driving unit includes a motor, a coupler and a single chip, an output end of the motor is rotatably connected to one end of the coupler, the other end of the coupler is rotatably connected to a lead screw, and the motor is electrically connected to the single chip.

In one embodiment, the clamping assembly includes a movable clamping plate, a fixed clamping plate and a fixed plate, wherein the movable clamping plate is mounted on one side surface of the fixed clamping plate, and the fixed plate is mounted on the other side surface of the fixed clamping plate.

In one embodiment, the fixing plate is fixed to the support plate by bolts.

Above-mentioned printed circuit board grinds machine of throwing, through screw nut pair as transmission structure, drive the centre gripping subassembly and carry out axial reciprocating motion, when practical application, the centre gripping subassembly with printed circuit board inspection sample centre gripping to predetermineeing the height, choose for use applicable mill to correspond centre gripping subassembly and install to the bottom plate on, operating personnel presses singlechip starter motor, the motor passes through the shaft coupling drive lead screw and rotates, nut seat and the nut on the lead screw are located to the cover convert the rotary motion of lead screw into the axial linear motion of nut pair, make the end of polishing of treating of printed circuit board inspection sample carry out axial reciprocating motion on the mill surface, realize automatic polishing. The utility model discloses a printed circuit board grinds machine of throwing carries out axial reciprocating motion and then accomplishes the automatic grinding and the automatic polishing of printed circuit board inspection sample through centre gripping printed circuit board inspection sample, can guarantee the whole face of printed circuit board inspection sample when smooth, ensures that printed circuit board inspection sample grinds the uniformity of throwing the surface, has improved greatly and has ground the effect of throwing.

Drawings

FIG. 1 is a schematic view of a PCB polishing and grinding machine according to an embodiment;

FIG. 2 is a schematic top view of the PCB polishing and grinding machine of the embodiment shown in FIG. 1;

fig. 3 is a schematic structural view of a clamping assembly of the printed circuit board grinding and polishing machine in the embodiment of fig. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 and 2, the present invention discloses a printed circuit board grinding and polishing machine, which comprises a base plate 1, a fixing unit 2, a supporting unit 3, a grinding and polishing unit 4 and a driving unit 5. The fixing unit 2, the supporting unit 3 and the driving unit 5 are respectively arranged on the bottom plate 1, one end of the polishing unit 4 is rotatably arranged on the fixing unit 2, the other end of the polishing unit 4 is rotatably connected with the supporting unit 3, and the driving unit 5 is rotatably connected with the polishing unit 4 through the fixing unit 2. In practical application, the driving unit 5 drives the polishing unit 4 to polish the printed circuit board inspection sample.

Referring to fig. 1 and 2, the fixing unit 2 includes a fixing member 21 and a fixing bearing 22, the fixing member 21 is provided with a first through hole 211, and the fixing bearing 22 is mounted on the fixing member 21 corresponding to the first through hole 211; the supporting unit 3 includes a supporting member 31 and a supporting bearing 32, the supporting member 31 is opened with a second through hole 311 corresponding to the first through hole 211, and the supporting bearing 32 is installed on the supporting member 31 corresponding to the second through hole 311. In the present embodiment, the fixed bearing and the supporting bearing provide an installation station and a rotation condition for the polishing unit 4, one end of the polishing unit 4 is rotatably installed in the supporting bearing 32, and the other end of the polishing unit 4 is rotatably connected with the driving unit 5 through the fixed bearing 22, so that the driving shaft of the polishing unit 4 can smoothly rotate. The grinding and polishing unit 4 comprises a grinding and polishing disk 41, a lead screw 42, a nut 43, a nut seat 44, a supporting plate 45 and a clamping assembly 46, wherein the grinding and polishing disk 41 is arranged on the bottom plate 1, the nut 43 and the nut seat 44 are sleeved on the lead screw 42, the supporting plate 45 is arranged on the top of the nut seat 44, the clamping assembly 46 is arranged on one side of the top surface of the supporting plate 45 corresponding to the grinding and polishing disk 41, one end of the lead screw 42 is rotatably arranged on the supporting bearing 32, and the other end of the lead screw 42 passes through the fixed bearing 22 and is rotatably connected to the driving unit 5. The driving unit 5 comprises a motor 51, a coupler 52 and a single chip microcomputer 53, wherein the output end of the motor 51 is rotatably connected with one end of the coupler 52, the other end of the coupler 52 is rotatably connected with the lead screw 42, and the motor 51 is electrically connected with the single chip microcomputer 53. In this embodiment, the lead screw 42 is used as a driving shaft of the polishing unit 4, and is rotationally connected to the coupler 52 through the fixed bearing 22, the output shaft of the motor 51 is connected to the coupler 52, and the lead screw 42 is driven by the coupler 52 to rotate, the lead screw 42, the nut 43 and the nut seat 44 convert the rotation motion of the motor 51 into an axial motion, the single chip 53 controls the power of the motor 51 and the rotation direction of the power output shaft, in practical application, the single chip 53 controls the power output shaft of the motor 51 to rotate clockwise and counterclockwise alternately according to a preset frequency, so that the clamping assembly 46 performs an axial reciprocating motion with the preset frequency, and a test sample of a printed circuit board to be polished performs an axial reciprocating motion with the same frequency on the polishing disk 41, thereby achieving the purpose of polishing.

Referring to fig. 3, the clamping assembly 46 includes a movable clamping plate 461, a fixed clamping plate 462, a fixed plate 463, a clamping screw 464, a first elongated groove 465 and a second elongated groove 466, the movable clamping plate 461 is mounted to one side surface of the fixed clamping plate 462 through the clamping screw 464, and the other side surface of the fixed clamping plate 462 is mounted to the fixed plate 463 through the screw and the first elongated groove 465. The fixing plate 462 is fixed to the support plate 45 by a bolt and a second bar-shaped groove 466. In this embodiment, the pcb inspection sample 7 is disposed between the movable clamping plate 461 and the fixed clamping plate 462, and the clamping screw 464 locks the movable clamping plate 461 and the fixed clamping plate 462, thereby fixing the pcb inspection sample 7 in the clamping assembly 46. When the screws in the first strip-shaped groove 465 and the second strip-shaped groove 466 are not locked, the screws can slide relatively in the grooves, so that the fixing clamping plate 462 can move longitudinally relative to the fixing plate 463 to adjust the height, and the fixing clamping plate is fixed by the locking screws; the fixing plate 463 can be moved laterally relative to the support plate 45 to adjust the position of the printed circuit board inspection sample 7 relative to the abrasive polishing disk 41 and fixed by a locking bolt.

In practical application, the clamping assembly clamps a printed circuit board inspection sample to a preset height, an applicable grinding disc is selected to correspond to the clamping assembly and is installed on the bottom plate, an operator controls the power of the motor and the rotation direction of the power output shaft through the single chip microcomputer, the motor rotates clockwise and anticlockwise alternately at preset frequency, the coupler drives the screw to rotate, the nut seat and the nut which are sleeved on the screw convert the alternate rotary motion of the screw into the axial reciprocating motion of the nut and the nut seat, and the end to be polished of the printed circuit board inspection sample axially reciprocates on the surface of the grinding disc, so that automatic polishing is realized. The utility model discloses a printed circuit board grinds machine of throwing carries out axial reciprocating motion and then accomplishes the automatic grinding and the automatic polishing of printed circuit board inspection sample through centre gripping printed circuit board inspection sample, can guarantee the whole face of printed circuit board inspection sample when smooth, ensures that printed circuit board inspection sample grinds the uniformity of throwing the surface, has improved greatly and has ground the effect of throwing.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A printed circuit board grinding and polishing machine, comprising: the polishing machine comprises a bottom plate, a fixing unit, a supporting unit, a polishing unit and a driving unit; the driving unit, the fixing unit and the supporting unit are respectively arranged on the bottom plate, one end of the grinding and polishing unit is rotatably arranged on the fixing unit, the other end of the grinding and polishing unit is rotatably connected with the supporting unit, and the driving unit is rotatably connected with the grinding and polishing unit through the fixing unit;

the fixing unit comprises a fixing piece and a fixing bearing, the fixing piece is provided with a first through hole, and the fixing bearing is arranged on the fixing piece corresponding to the first through hole;

the supporting unit comprises a supporting piece and a supporting bearing, the supporting piece is provided with a second through hole corresponding to the first through hole, and the supporting bearing is arranged on the supporting piece corresponding to the second through hole;

the grinding and polishing unit comprises a grinding and polishing disk, a lead screw, a nut seat, a supporting plate and a clamping assembly, wherein the grinding and polishing disk is arranged on the bottom plate, the nut is sleeved on the nut seat and is arranged on the lead screw, the supporting plate is arranged at the top of the nut seat, the clamping assembly corresponds to the grinding and polishing disk and is arranged on one side of the top surface of the supporting plate, one end of the lead screw is rotatably arranged on the supporting bearing, and the other end of the lead screw passes through the fixed bearing and is rotatably connected with the driving unit.

2. The printed circuit board grinding and polishing machine of claim 1, wherein the driving unit comprises a motor, a coupler and a single chip microcomputer, the output end of the motor is rotatably connected with one end of the coupler, the other end of the coupler is rotatably connected with the lead screw, and the motor is electrically connected with the single chip microcomputer.

3. The printed circuit board grinding and polishing machine of claim 1, wherein the clamping assembly comprises a movable clamping plate, a fixed clamping plate and a fixed plate, the movable clamping plate is mounted on one side surface of the fixed clamping plate, the fixed plate is mounted on the other side surface of the fixed clamping plate, and the fixed plate is fixed on the supporting plate through a bolt.