Edge grinding machine for PCB

Abstract

The utility model discloses an edge grinding machine for a PCB, and relates to the technical field of PCB production equipment. The edge grinding machine for the PCB comprises a rack, the rack comprises a workbench, clamping plates are arranged on one side, in the first direction, of the workbench, and the clamping plates are arranged at intervals in the second direction to form a containing space. The grinding mechanism comprises a grinding wheel and a fixing frame, the grinding wheel and the fixing frame are located on the workbench, and the grinding wheel penetrates through the fixing frame in the second direction; the turnover mechanism is located in the containing space and buckled with the clamping plates, the turnover mechanism comprises a rotating piece and a limiting piece, and the limiting piece is arranged on the inner side of the rotating piece in the second direction and used for being connected with the PCB in a clamped mode. By the adoption of the technology, the problem that in the prior art, a plurality of edge grinding units of the same structure need to occupy a large amount of machining space can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board production equipment, in particular to an edge grinding machine for PCB boards. Background Art

[0002] Edge grinding is a key step in the PCB manufacturing process, primarily used to remove burrs from the edges of the PCB to ensure dimensional accuracy and appearance quality. Traditional edge grinding machines typically require manual flipping of the PCB to perform edge grinding on all four sides. In response to this, Chinese utility model patent CN205600459U discloses a fully automatic edge grinding machine for PCB edge grinding. The machine comprises four edge grinding units and a transfer unit positioned between adjacent units. The transfer unit is capable of flipping and transferring the PCB, thereby automating the edge grinding process.

[0003] However, the above method requires the installation of four edge grinding units with the same structure, so that the edge grinding process occupies a large amount of processing space, and the equipment cost of the four edge grinding units is relatively high. Utility Model Content

[0004] The utility model provides an edge grinding machine for a PCB board, so as to solve the problem in the prior art that a plurality of edge grinding units with the same structure need to occupy a large amount of processing space.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is to provide an edge grinding machine for PCB boards, wherein the edge grinding machine for PCB boards includes: a frame, the frame includes a workbench, wherein the workbench is provided with a card plate on one side along a first direction, and the card plates are arranged at intervals along a second direction to form an accommodating space.

[0006] A grinding mechanism, the grinding mechanism including a grinding wheel and a fixed frame located on the workbench, wherein the grinding wheel passes through the fixed frame along the second direction; a flipping mechanism, the flipping mechanism is located in the accommodating space and is respectively engaged with the clamping plates, wherein the flipping mechanism includes a rotating member and a limiting member, the limiting member is arranged on the inner side of the rotating member along the second direction and is used to clamp the PCB board.

[0007] The technical solution provided by this utility model has the following beneficial effects compared with the prior art:

[0008] By arranging a clamping plate on one side of the workbench and forming an accommodating space for placing the flipping mechanism, when the external transmission device transfers the PCB board to the accommodating space, the limiting member of the flipping device can engage with the PCB board under the transmission of the external transmission device and limit the PCB board in the vertical direction, thereby enabling the edge of the PCB board to be polished when the grinding wheel rotates clockwise or counterclockwise.

[0009] When one side of the PCB is polished flat by the grinding wheel, the rotating member of the flipping mechanism flips the limit member, thereby flipping the PCB so that the other side of the PCB can also contact the grinding wheel and be polished.

[0010] In addition, the above structure can be used to transform the existing edge grinding machine so that it can match the turning device, thereby effectively saving the machine tool cost.

[0011] In some embodiments, the flipping mechanism further includes a telescopic guide rail extending along the second direction, wherein the rotating member cooperates with the telescopic guide rail so that the rotating member can be displaced along the second direction.

[0012] With the above technical solution, the flipping mechanism is further provided with a telescopic guide rail, so that the rotating member can be displaced within the accommodating space, thereby enabling the limiting member to match PCB boards of different specifications and sizes for flipping.

[0013] In some embodiments, the workbench is further provided with a dust box, which is located on a side of the fixing frame away from the grinding wheel along the third direction, wherein the length of the dust box along the second direction is greater than that of the grinding wheel.

[0014] With the above technical solution, since a large amount of dust is generated during the polishing process of the PCB board, which is easily accumulated on the workbench, a dust collection box is added to collect the dust during the polishing process, which can effectively ensure the cleanliness of the working area.

[0015] In some embodiments, projections of the dust collecting box along the first direction and the second direction are trapezoidal.

[0016] By adopting the above technical solution, the dust collecting box has a large opening on the side facing the grinding wheel and a small opening on the side away from the grinding wheel, thereby realizing dust collection by the dust collecting box.

[0017] In some embodiments, the frame is further provided with an exhaust duct, which extends along the first direction to the dust box and is in communication with the dust box.

[0018] By adopting the above technical solution, an exhaust pipe is arranged to be connected to the dust collecting box, so that the dust collecting box constitutes a dust suction device to continuously absorb the dust around the workbench, thereby effectively improving the cleaning effect.

[0019] In some embodiments, the frame further includes a lifting mechanism, which includes a plurality of lifting columns extending along a third direction, the lifting columns being respectively connected to both ends of the grinding wheel and used to drive the grinding wheel to move along the third direction.

[0020] By adopting the above technical solution, a lifting mechanism is added below the frame, so that the grinding wheel can be displaced along the third direction, thereby adjusting the height of the edge grinding.

[0021] In some embodiments, the fixing frame is further provided with a plurality of dial indicators, which are arranged at intervals along the second direction and are located above the grinding wheel along the third direction.

[0022] Using the above technical solution, the dial indicator (micrometer) is a precision measuring tool. Setting the dial indicator on both sides of the grinding wheel can effectively measure the height difference between the two ends of the grinding wheel, thereby calibrating the grinding accuracy of the grinding wheel.

[0023] In some embodiments, the edge grinding machine is further provided with a positioning assembly, which includes a plurality of positioning pins located on the workbench and a magnetic positioning pin located on the flipping mechanism.

[0024] By adopting the above technical solution, the positioning component can effectively ensure the precise position of the PCB board during the grinding process, thereby improving the edge grinding accuracy of the PCB board.

[0025] In some embodiments, the workbench is further provided with a sensor system including a rotary encoder and a position sensor, and the rotary encoder and the position sensor are located in the flipping mechanism.

[0026] By adopting the above technical solution, in order to avoid the situation where there is a gap between the flipped PCB board and the grinding wheel, resulting in no edge grinding or uneven edge grinding, the addition of an in-position sensor and a rotary encoder can effectively determine the rotation angle of the rotating shaft and the edge grinding position of the PCB board.

[0027] In some embodiments, a plurality of pulleys are further provided at the bottom of the frame along the third direction.

[0028] By adopting the above technical solution, the frame can be effectively moved and positioned by adding pulleys, so that it can be matched with an external transmission device to realize an automated edging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of an edge grinding machine for PCB boards provided by the present invention;

[0031] Figure 2 This is a schematic diagram of the three-dimensional structure of an embodiment of a turning mechanism of an edge grinding machine for PCB boards provided by the present invention;

[0032] Figure 3 This is a schematic diagram of the three-dimensional structure of an embodiment of a workbench of an edge grinding machine for PCB boards provided by the present invention;

[0033] Figure 4 This is a bottom view of an edge grinding machine for PCB boards provided by the utility model.

[0034] In the picture:

[0035] 1. Frame; 10. Workbench; 11. Pallet; 12. Accommodation space; 13. Dust collection box; 14. Exhaust duct; 15. Lifting mechanism; 150. Lifting column; 16. Pulley; 2. Grinding mechanism; 20. Grinding wheel; 21. Fixed frame; 210. Dial indicator; 3. Flipping mechanism; 30. Rotating part; 31. Limiting part; 32. Telescopic guide rail. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] In order to facilitate the subsequent description, before describing the specific structure of the edge grinding machine for PCB boards, this application first combines Figure 1A first direction (X), a second direction (Y), and a third direction (Z) are defined. The first direction is the length of the PCB edge grinder when it is normally positioned, for example, the X direction; the second direction is the width of the PCB edge grinder when it is normally positioned, for example, the Y direction; and the third direction is the height of the PCB edge grinder when it is normally positioned, for example, the Z direction. In this application, the first direction (X), the second direction (Y), and the third direction (Z) are mutually perpendicular.

[0038] It can be understood that the mutual perpendicularity in this application is not absolute perpendicularity, and the approximate perpendicularity caused by processing errors and assembly errors (for example, the angle between two structural features is 89.9°) is also within the range of mutual perpendicularity in this application.

[0039] See also Figures 1 to 2 As shown, Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of an edge grinding machine for PCB boards provided by the present application is shown; Figure 2 A schematic diagram of the three-dimensional structure of an embodiment of a turning mechanism 3 of an edge grinding machine for PCB boards provided by the present application is shown.

[0040] In some embodiments, the edge grinding machine for PCB boards includes: a frame 1, the frame 1 includes a workbench 10, wherein a clamping plate 11 is provided on one side of the workbench 10 along a first direction, and the clamping plates 11 are spaced apart along a second direction to form an accommodating space 12.

[0041] The grinding mechanism 2 includes a grinding wheel 20 and a fixing frame 21 located on the workbench 10, wherein the grinding wheel 20 passes through the fixing frame 21 along the second direction; the flipping mechanism 3 is located in the accommodating space 12 and is respectively engaged with the clamping plate 11, wherein the flipping mechanism 3 includes a rotating member 30 and a limiting member 31, and the limiting member 31 is arranged on the inner side of the rotating member 30 along the second direction and is used to clamp the PCB board.

[0042] In the embodiment of the present application, a clamping plate 11 is provided on one side of the workbench 10 to form an accommodating space 12 for placing the flipping mechanism 3, so that when the external transmission device transmits the PCB board to the accommodating space 12, the limiting member 31 of the flipping device can be clamped with the PCB board under the transmission of the external transmission device and limit the PCB board in the vertical direction, so that the grinding wheel 20 can grind the edge of the PCB board when it rotates clockwise or counterclockwise.

[0043] When one side of the PCB is polished flat by the grinding wheel 20, the rotating member 30 of the flipping mechanism 3 flips the limiting member 31, thereby flipping the PCB so that the other side of the PCB can also contact the grinding wheel 20 and be polished.

[0044] In addition, the above structure can be used to transform the existing edge grinding machine so that it can match the turning device, thereby effectively saving the machine tool cost.

[0045] In some embodiments, the flipping mechanism 3 further includes a telescopic guide rail 32 extending along the second direction, wherein the rotating member 30 cooperates with the telescopic guide rail 32 so that the rotating member 30 can be displaced along the second direction.

[0046] In the embodiment of the present application, the flip mechanism 3 is further provided with a telescopic guide rail 32, so that the rotating member 30 can be displaced in the accommodating space 12, thereby enabling the limiting member 31 to match PCB boards of different specifications and sizes for flipping.

[0047] In some embodiments, the frame 1 further includes a lifting mechanism 15, which includes a plurality of lifting columns 150 extending along the third direction. The lifting columns 150 are respectively connected to both ends of the grinding wheel 20 and are used to drive the grinding wheel 20 to move along the third direction.

[0048] In the embodiment of the present application, a lifting mechanism 15 is additionally provided below the frame 1 so that the grinding wheel 20 can be displaced along the third direction, thereby adjusting the height of the edge grinding.

[0049] In some embodiments, the fixing frame 21 is further provided with a plurality of dial indicators 210 . The dial indicators 210 are arranged at intervals along the second direction and are located above the grinding wheel 20 along the third direction.

[0050] In the embodiment of the present application, the dial indicator 210 (micrometer) is a precision measuring tool. Providing the dial indicator 210 on both sides of the grinding wheel 20 can effectively measure the height difference between the two ends of the grinding wheel 20, thereby calibrating the grinding accuracy of the grinding wheel 20.

[0051] See also Figures 3 and 4 As shown, Figure 3 A schematic diagram of the three-dimensional structure of an embodiment of a workbench 10 of an edge grinding machine for PCB boards provided by the present application is shown; Figure 4 A bottom view of an edge grinding machine for PCB boards provided in the present application is shown.

[0052] In some embodiments, the workbench 10 is further provided with a dust box 13 , which is located on a side of the fixing frame 21 away from the grinding wheel 20 along the third direction, wherein the length of the dust box 13 along the second direction is greater than that of the grinding wheel 20 .

[0053] In the embodiment of the present application, since a large amount of dust is generated during the polishing process of the PCB board, which is easily accumulated on the workbench 10, a dust box 13 is added to collect the dust during the polishing process, which can effectively ensure the cleanliness of the working area.

[0054] In some embodiments, the projections of the dust box 13 along the first direction and the second direction are trapezoidal.

[0055] In the embodiment of the present application, the dust box 13 has a large opening on the side facing the grinding wheel 20 and a small opening on the side away from the grinding wheel 20, thereby enabling the dust box to collect dust.

[0056] In some embodiments, the frame 1 is further provided with an exhaust duct 14 , which extends along the first direction to the dust collecting box 13 and is in communication with the dust collecting box 13 .

[0057] In the embodiment of the present application, an exhaust pipe 14 is provided to communicate with the dust box 13, so that the dust box 13 constitutes a dust suction device to continuously absorb dust around the workbench 10, thereby effectively improving the cleaning effect.

[0058] In some embodiments, the edge grinding machine is further provided with a positioning assembly, which includes a plurality of positioning pins located on the workbench 10 and a magnetic positioning pin located on the turning mechanism 3 .

[0059] In the embodiment of the present application, the positioning assembly can effectively ensure the precise position of the PCB board during the grinding process, thereby improving the edge grinding accuracy of the PCB board.

[0060] In some embodiments, the workbench 10 is further provided with a sensor system including a rotary encoder and an in-position sensor, and the rotary encoder and the in-position sensor are located in the flipping mechanism 3 .

[0061] In the embodiment of the present application, in order to avoid the situation where there is a gap between the flipped PCB board and the grinding wheel 20, resulting in no edge grinding or uneven edge grinding, an in-position sensor and a rotary encoder are added to effectively determine the rotation angle of the rotating shaft and the edge grinding position of the PCB board.

[0062] In some embodiments, a plurality of pulleys 16 are further provided at the bottom of the frame 1 along the third direction.

[0063] In the embodiment of the present application, the rack 1 can be effectively moved and positioned by adding the pulley 16 , so that it can be matched with an external transmission device to realize an automated edging process.

[0064] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, should be included in the protection scope of the present invention.

Claims

1. An edge grinding machine for PCB boards, characterized in that: include: A frame, the frame comprising a workbench, wherein a card plate is provided on one side of the workbench along a first direction, and the card plates are spaced apart along a second direction to form an accommodating space; a grinding mechanism, the grinding mechanism comprising a grinding wheel and a fixing frame located on the workbench, wherein the grinding wheel passes through the fixing frame along the second direction; The flipping mechanism is located in the accommodating space and is respectively engaged with the card plates, wherein the flipping mechanism includes a rotating member and a limiting member, the limiting member is arranged on the inner side of the rotating member along the second direction and is used to clamp the PCB board.

2. The edge grinding machine for PCB boards according to claim 1, characterized in that: The flipping mechanism further includes a telescopic guide rail extending along the second direction, wherein the rotating member cooperates with the telescopic guide rail so that the rotating member can be displaced along the second direction.

3. The edge grinding machine for PCB boards according to claim 1, characterized in that: The workbench is further provided with a dust box, which is located on a side of the fixing frame away from the grinding wheel along the third direction, wherein the length of the dust box along the second direction is greater than that of the grinding wheel.

4. The edge grinding machine for PCB boards according to claim 3, characterized in that: The projections of the dust collecting box along the first direction and the second direction are trapezoidal.

5. The edge grinding machine for PCB boards according to claim 3, characterized in that: The frame is further provided with an exhaust pipe, which extends along the first direction to the dust collecting box and is communicated with the dust collecting box.

6. The edge grinding machine for PCB boards according to claim 1, characterized in that: The frame further includes a lifting mechanism, which includes a plurality of lifting columns extending along a third direction. The lifting columns are respectively connected to both ends of the grinding wheel and are used to drive the grinding wheel to move along the third direction.

7. The edge grinding machine for PCB boards according to claim 1, characterized in that: The fixing frame is further provided with a plurality of dial indicators, which are arranged at intervals along the second direction and are located above the grinding wheel along the third direction.

8. The edge grinding machine for PCB boards according to claim 1, characterized in that: The edge grinding machine is further provided with a positioning assembly, which includes a plurality of positioning pins located on the workbench and a magnetic positioning pin located on the turning mechanism.

9. The edge grinding machine for PCB boards according to claim 1, characterized in that: The workbench is further provided with a sensor system, including a rotary encoder and an in-place sensor, wherein the rotary encoder and the in-place sensor are located in the flipping mechanism.

10. The edge grinding machine for PCB boards according to claim 1, characterized in that: The bottom of the frame along the third direction is further provided with a plurality of pulleys.

Images