PCB board edge grinding device with adjusting structure

Abstract

The present application relates to the technical field of PCB grinding, and relates to a PCB edge grinding device with an adjusting structure, which comprises an L-shaped conveyor body, which is divided into an entering area and a sending-out area; conveyor roller groups, which are arranged perpendicularly to each other on the entering area and the sending-out area; pressing wheels, which are arranged at intervals on the entering area and the sending-out area; grinding modules, which are arranged in pairs of two on the L-shaped conveyor body between the pressing wheels; lifting devices, which are arranged in pairs of two on the entering area or the sending-out area; a connecting frame, which is arranged on the lifting devices; a second motor, which is installed on the connecting frame; and a double-head round corner grinder, which is driven and installed on the second motor. The double-head round corner grinder can directly round the right angles of the PCB during the process of straightening the edges of the PCB, thereby simplifying the initial processing steps of the PCB.

Description

Technical Field

[0001] This invention relates to the field of PCB grinding technology, and more specifically, to a PCB edge grinding device with an adjustment structure. Background Technology

[0002] During the PCB manufacturing process, in order to prevent the boards from scratching the surface due to excessively sharp burrs when they come into contact with each other, the straight edges and right-angled edges of the boards need to be ground before production.

[0003] Because PCB boards are formed by cutting a large raw material substrate into multiple smaller pieces, their size is continuously reduced during multiple processing steps. The edge grinding process requires grinding the straight edges and right-angled edges of the board. The grinding of straight edges can be done by grinding wheels during the board conveyor belt process, but the grinding of right-angled edges involves grinding the right angles of the board into rounded corners. Therefore, the rounded corner process requires collecting and stacking the boards and then using specialized milling equipment to round the four right angles of the board. This adds unnecessary processing steps to the initial processing of PCB boards. Furthermore, the required rounded corner radius varies depending on the size of the board, and the grinding radius needs to be adjusted according to the size of the board, making the operation quite cumbersome. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art. To this end, the present invention provides a PCB board edge grinding device with an adjustment structure.

[0005] To achieve the above objectives, the present invention provides a PCB board edge grinding device with an adjustable structure, comprising: an L-shaped conveyor body, divided into an entry zone and an exit zone; a set of conveying rollers, arranged perpendicularly to each other on the entry zone and the exit zone, and driven by the L-shaped conveyor body; a lateral pushing device, which is composed of a drive screw spirally connected to a push block, the drive screw driving the push block to move laterally, the lateral pushing device being laid on the entry zone and the exit zone; multiple pressure rollers, arranged at intervals on the entry zone and the exit zone, with a gap between them and the set of conveying rollers allowing only plate-shaped materials to pass through; and a grinding module, which... The L-shaped conveyor body, arranged in pairs, is used to grind the edges of plate-shaped materials passing between the conveyor rollers and the pressure rollers. Two lifting devices, also in pairs, are arranged in the entry or exit area. A connecting frame is mounted on the lifting device. A second motor is mounted on the connecting frame. A double-headed rounded corner grinder has two rounded corner cutters, and the double-headed rounded corner grinder is driven by the second motor. The rounded corner cutters are arranged at an angle with their axis parallel to the surface of the plate-shaped material, and make right-angle contact with the material at this angle.

[0006] As a further improvement to the solution, the grinding module includes a grinding wheel driven by a first motor. The grinding wheel has a concave grinding groove with a trapezoidal cross section, and the width of the groove bottom matches the thickness of the plate-shaped material to be ground.

[0007] As a further improvement to the solution, the double-headed rounded corner grinder includes: an intermediate part, detachably mounted on the second motor; a frame, mounted on the bottom of the intermediate part; a driven bevel gear, symmetrically arranged in the frame; a driving bevel gear, arranged on the intermediate part and meshing with the driven bevel gear, driven by the second motor; and a rounded corner milling cutter passing through the frame and connected to the driven bevel gear.

[0008] As a further improvement to the solution, it also includes: a positioning baffle, which is fixedly installed on the second motor; the bottom of the positioning baffle protrudes from the center line of the rounded end mill.

[0009] As a further improvement to the solution, it also includes: a guide side plate, which is prominently arranged on both sides of the entrance of the entry area; the guide side plate has an inclined surface on the side away from the delivery area, and the protruding edge of the guide side plate is flush with the bottom of the grinding groove of the grinding wheel; an anti-biasing pressure roller, which is installed on the entry area and adjacent to the delivery area; and a gap is left between the anti-biasing pressure roller and the conveying roller assembly, which only allows plate-shaped materials to pass through.

[0010] As a further improvement to the solution, it also includes: a waste collection frame, configured on the inlet area and the outlet area, with the grinding wheel and the double-headed rounded corner grinder placed therein; the waste collection frame has a passage opening that allows plate-shaped materials to pass through; and a suction device for extracting particulate matter is connected to the bottom of the waste collection frame.

[0011] As a further improvement to the solution, it also includes: partitions arranged within the waste collection frame.

[0012] As a further improvement to the solution, it also includes: a shelf installed at the end of the delivery area; a shelf step symmetrically arranged at the lower part of the shelf; guide rods installed on both sides of the shelf; a spring sleeved on the guide rod; a stop block slidably disposed on the guide rod and held in the upper position of the guide rod by the spring; the shelf having an opening for the protrusion of the stop block to pass through; and a tray supported by the protrusions of the stop blocks arranged on both sides.

[0013] As a further improvement to the solution, it also includes: a buffer clamp, which is symmetrically hinged to the upper part of the shelf and kept vertically downward by a torsion spring; the lower part of the buffer clamp is provided with an oblique extension for contacting the plate-shaped material, and the total holding force of the torsion springs on both sides is less than the weight of a single plate-shaped material.

[0014] As a further improvement to the solution, it also includes: a feeding mechanism, configured at the entrance of the entry area to intermittently feed the conveyor roller group; the feeding mechanism includes: side plates, symmetrically installed at the entrance of the entry area; a platform, slidably disposed on both sides of the side plates; a power output module, installed on the upper part of the side plates; a transmission screw, rotatably disposed on the side plates and driven by the power output module, the transmission screw spirally passing through the platform; a linear drive device, arranged on the top of the side plates; a moving frame, connected to the linear drive device for reciprocating translation; a telescopic push rod, arranged on the moving frame; and a suction cup frame, connected to the telescopic push rod for vertical movement.

[0015] This invention brings at least the following effects:

[0016] 1. The present invention, through the design of a double-headed rounded corner grinder, can directly round the right angles of the PCB board during the grinding of straight edges, simplifying the initial processing steps of the PCB board; and the double-headed rounded corner grinder has two rounded corner milling cutters with different curvatures, which can quickly adjust the grinding angle as needed, and can also make corresponding adjustments quickly to deal with different sized boards to achieve the required usage.

[0017] 2. The positioning baffle installed on the second motor can intercept the sheet material during its movement to ensure that the sheet material stays in a fixed position, thereby enabling the double-headed rounded corner grinder to accurately complete the rounded corner grinding operation on the sheet material. As the lifting device is raised, the positioning baffle will no longer obstruct the sheet material.

[0018] 3. The waste collection frame provided in this invention can collect the waste debris generated by the grinding wheel and the double-headed rounded corner grinder, so as to prevent the debris generated by grinding from falling on the sheet metal and affecting subsequent processing.

[0019] 4. The rack and tray provided in this invention can stack and collect the edge-grinding plates. At the same time, the buffer clamps can keep the plates in a straight position during the pushing process, which can effectively prevent the plates from falling on the tray in an inclined or vertical state and causing damage to the plate surface. Attached Figure Description

[0020] Figure 1 This is a complete schematic diagram of the present invention.

[0021] Figure 2 For the present invention Figure 1 Another perspective illustration.

[0022] Figure 3 For the present invention Figure 1A schematic diagram of a portion of the L-shaped conveyor body.

[0023] Figure 4 This is a schematic diagram of the grinding module of the present invention.

[0024] Figure 5 This is a schematic diagram of the lifting device, connecting frame, second motor, and double-headed rounded corner grinder of the present invention.

[0025] Figure 6 This is a disassembly diagram of the lifting device, connecting frame, second motor, and double-headed rounded corner grinder of the present invention.

[0026] Figure 7 This is a schematic diagram of the rounded end mill used in this invention to mill a sheet metal.

[0027] Figure 8 This is a schematic diagram showing the location of the notch in the waste collection frame of the present invention.

[0028] Figure 9 This is a schematic diagram showing the location of the partition in the waste collection frame of the present invention.

[0029] Figure 10 This is a schematic diagram of the buffer clamp, the support frame, the support step, and the support plate of the present invention.

[0030] Figure 11 This is a schematic diagram of the feeding mechanism of the present invention.

[0031] Figure 12 This is a schematic diagram of the second working state of the present invention.

[0032] The correspondence between the reference numerals and the names of the components in the attached drawings is as follows:

[0033] 1-L-type conveyor body, 2-conveying roller group, 21-horizontal push device, 22-drive screw, 23-push block, 3-pressure roller, 4-grinding module;

[0034] 41-First motor, 42-Grinding wheel, 43-Grinding groove;

[0035] 5-Lifting device, 6-Connecting frame, 7-Second motor, 8-Double-head rounded corner grinder;

[0036] 81-Intermediate component, 82-Frame, 83-Driven bevel gear, 84-Driven bevel gear, 85-Rounded end mill;

[0037] 9-Positioning baffle;

[0038] 10-Guide edge plate, 101-Sloping surface;

[0039] 11-Anti-deviation pressure roller;

[0040] 12-Waste collection box, 121-Through notch, 122-Baffle;

[0041] 13-Shelf, 131-Standing step, 132-Guide rod, 133-Spring, 134-Support block, 135-Panel;

[0042] 14-Buffer plate, 141-Slanted extension;

[0043] 15-Side plate, 151-Platform, 152-Power output module, 153-Transmission screw, 154-Linear drive device, 155-Moving frame, 156-Telescopic push rod, 157-Suction cup frame, 00-Sheet material. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] This invention specifically discloses a PCB board edge grinding device with an adjustment structure, such as... Figures 1-7 As shown, it includes: an L-shaped conveyor body 1, to... Figure 1For reference, the L-shaped conveyor body 1 has two parts: the left part is the inlet area and the right part is the outlet area. Conveying roller sets 2 are arranged in both the inlet and outlet areas, with their conveying directions perpendicular to each other. The conveying roller sets 2 are driven by the L-shaped conveyor body 1. The sheet material 00 to be ground is first placed in the inlet area, then driven by the conveying roller sets 2 before being discharged from the outlet area. The edges and corners of the sheet material 00 are ground during this process. To ensure the sheet material 00 remains stable and does not shift during grinding, multiple pressure rollers 3 are evenly spaced and rotated in both the inlet and outlet areas. A gap is left between the pressure rollers 3 and the conveying roller sets 2, allowing only sheet-like materials to pass through. Both the pressure rollers 3 and the rollers on the conveying roller sets 2 are made of rubber, preventing easy deflection during the sheet material's transmission. This also avoids scratching the sheet metal 00. For burrs on the straight edges of the sheet metal 00, grinding modules 4 are installed on the L-shaped conveyor body 1. Grinding modules 4 are arranged in pairs, symmetrically distributed on both sides of the conveyor roller group 2. During the movement of the sheet metal 00, they can grind the burrs on the straight edges of the sheet metal 00. The grinding modules 4 are fixedly installed in the gap between the pressure rollers 3, pressing the sheet metal 00 to keep it fixed during grinding. At least two sets of grinding modules 4 are arranged in the entry and exit areas respectively. The purpose of setting multiple sets of grinding modules 4 is that when the sheet metal 00 moves past the first grinding module 4, the grinding module 4 performs preliminary burr removal. After passing the second grinding module 4, the grinding module 4 performs secondary polishing, thus accelerating the edge grinding efficiency of the sheet metal 00. Specifically, according to... Figure 4 As shown, the grinding module 4 includes a grinding wheel 42 driven by a first motor 41. The grinding wheel 42 has a concave grinding groove 43 with a trapezoidal cross-section. The arrangement of the grinding wheel 42 is adapted to the height of the sheet metal 00 during movement, so that the straight edge of the sheet metal 00 can be engaged in the grinding groove 43 during movement. Furthermore, the width of the bottom of the grinding groove 43 matches the thickness of the sheet metal 00, thus preventing the sheet metal 00 from being thinned during grinding. Specifically, according to... Figure 2 and Figure 3As shown, for the sheet material 00 that shrinks continuously after slitting, a transverse pushing device 21 is provided at the initial entry position of the entry and exit zones. The transverse pushing device 21 consists of a drive screw 22 screwed together with push blocks 23. The drive screw 22 is driven to rotate by an external drive device, while the push blocks 23 are distributed on both sides, with one push block 23 corresponding to one drive screw 22. When not in use, the push blocks 23 are located at the side edge of the gap between the conveyor roller group 2. When a small sheet material 00 passes through the transverse pushing device 21, the push blocks 23 push one side of the sheet material 00. The sheet metal 00 is pushed to one edge close to the conveyor roller group 2 for conveying. At this time, only one edge of the sheet metal 00 is polished by the grinding module 4. After the single-sided polishing is completed, the conveyor roller group 2 rotates in the opposite direction to make the sheet metal 00 retract to the horizontal pushing device 21. Then, the horizontal pushing device 21 pushes the unpolished edge of the sheet metal 00 to the other side close to the conveyor roller group 2. The conveyor roller group 2 then makes the sheet metal 00 forward again so that the grinding module 4 can polish the other side of the sheet metal 00, thereby realizing the polishing of sheets metal 00 of different sizes.

[0047] according to Figure 1 , Figure 5 and Figure 6 As shown, the lifting devices 5 are arranged in pairs on both sides of the entry area. The lifting devices 5 are linear actuators. A connecting frame 6 is provided on the movable end of the lifting device 5. The connecting frame 6 moves up and down through the lifting device 5. A second motor 7 is fixedly installed on the connecting frame 6. A double-headed rounded corner grinder 8 is plugged into the bottom of the second motor 7. The double-headed rounded corner grinder 8 is equipped with two rounded corner cutters 85. The double-headed rounded corner grinder 8 is driven by the second motor 7 to rotate the two rounded corner cutters 85. The rounded corner cutters 85 are arranged at an angle with their axis parallel to the surface of the plate material. One of the rounded corner cutters 85 directly contacts the plate material 00 at a right angle at this angle. After the plate material 00 is transported and moves close to the rounded corner cutter 85, the lifting device 5 drives the rounded corner cutter 85 to move up and down, thereby making the rotating rounded corner cutter 85 grind the plate material 00 at a right angle.

[0048] Among them, according to Figure 6As shown, the double-headed corner grinder 8 includes: an intermediate part 81 that is pluggably connected to the bottom of the second motor 7; when it is necessary to change to another type of corner milling cutter 85, the intermediate part 81 can be pulled out and the angle adjusted to quickly complete the replacement of the corner milling cutter 85; a frame 82 is fixedly installed at the bottom of the intermediate part 81; driven bevel gears 83 are symmetrically rotatably connected inside the frame 82; and a driving bevel gear 84 is rotatably connected to the intermediate part 81 via a shaft, and the driving bevel gear 84 is connected to the driven bevel gears 83 on both sides. The shaft connected to the driving bevel gear 84 is connected to the output shaft of the second motor 7 via a coupling. The rounded end mill 85 passes through the frame 82 and is connected to the driven bevel gear 83. Therefore, after the second motor 7 is working, the rounded end mills 85 installed on both sides of the frame 82 can rotate. Of the two rounded end mills 85, one is used as a spare end mill. After the sheet metal 00 is replaced, if the size of the sheet metal 00 changes, the angle of the intermediate part 81 can be adjusted directly to allow the rounded end mill 85 to be put into work quickly.

[0049] Specifically, in use, the sheet material 00 requiring edge grinding is lowered from the entry area. Under the conveying roller group 2, the sheet material 00 enters the gap between the pressing roller 3 and the conveying roller group 2. As the sheet material 00 is continuously conveyed, it is positioned between the lifting devices 5 on both sides. There are two sets of lifting devices 5, arranged in pairs, corresponding to the four right angles of the sheet material 00. The lifting devices 5 drive the second motor 7 to move up and down according to… Figure 7As shown, with the rotation of the fillet milling cutter 85, the right angle of the sheet metal 00 is ground into a rounded corner, thus completing the rounding process. If the size of the sheet metal 00 changes, the intermediate part 81 is rotated half a turn to face the spare fillet milling cutter 85 toward one side of the sheet metal 00, thus quickly completing the adjustment to adapt to the rounding requirements of different sized sheet metal 00. After the sheet metal 00 is rounded, it continues to move forward and encounters the grinding module 4 in the entry area, which grinds the straight edges on both sides of the rectangular sheet metal 00. During the movement of the sheet metal 00, the grinding is completed and it enters the delivery area. After the sheet metal 00 enters the delivery area, the conveying direction changes from the lateral movement in the entry area to the longitudinal movement in the delivery area. The sheet metal 00 itself does not deflect, so during the longitudinal movement, it passes through the delivery area. When the grinding module 4 is installed, it grinds the straight edges on both longitudinal sides of the sheet metal 00, thus completing all the grinding operations on the sheet metal 00. After that, the sheet metal 00 can be collected. Regarding the location of the lifting device 5, since the rounding operation can be completed in a fixed area, the sheet metal 00 does not need to be rotated to adjust its angle during the rounding process. Therefore, it can be installed in the entry area or the delivery area. However, the grinding of straight edges is necessary because the sheet metal 00 has four edges of a certain length. If the grinding module 4 is installed in a separate area, the sheet metal 00 would need to be rotated before all four edges can be ground. In order to reduce unnecessary mechanical movements and reduce the difficulty of equipment maintenance, the desired effect can be achieved by changing the conveying direction and installing the grinding module 4 on the paths of both conveying directions.

[0050] according to Figure 12 As shown, based on the above-described implementation, a second working state is formed by connecting two L-shaped conveyor bodies 1. The grinding module 4, which was originally symmetrically arranged on both sides of the entry and exit areas, and the device for grinding rounded corners, are changed to be arranged on one side close to the inner edge of the L-shaped conveyor body 1. The inner edge of the L-shaped conveyor body 1 is the side closest to the center of the inner corner of the L-shaped conveyor body 1. The two L-shaped conveyor bodies 1 are connected in series in a "U" shape, with the exit area set on the first L-shaped conveyor body 1 connected to the second L-shaped conveyor body 1. The first L-shaped conveyor 1 has an entry area, while the exit area of ​​the second L-shaped conveyor 1 is not connected to the entry area of ​​the first L-shaped conveyor 1, forming a rectangular processing area surrounded by four fixed processing areas. The sheet metal 00 moves close to the edge during conveying. Each time the sheet metal 00 is conveyed to a new area, the close-fitting edge can be polished. This layout can handle sheet metal 00 of different sizes. In the polishing process, it is not necessary to drive the sheet metal 00 to move back and forth, so it is not necessary to adjust the processing position through the horizontal push device 21. The sheet metal 00 can complete the polishing of the four sides by moving around the rectangular processing area once.

[0051] Among them, according to Figure 7As shown, a positioning baffle 9 is also fixedly installed on the second motor 7. In use, the positioning baffle 9 follows the second motor 7 down to a height that can stop the sheet metal 00 from moving forward. The bottom of the positioning baffle 9 protrudes from the center line of the rounded end mill 85. In this way, after the positioning baffle 9 stops the sheet metal 00, the rounded end mill 85 has not yet contacted the sheet metal 00, but the sheet metal 00 has been restricted to a fixed position. Therefore, the lifting device 5 only needs to continue to move up and down repeatedly while the positioning baffle 9 does not detach from the sheet metal 00, so that the rounded end mill 85 can accurately complete the rounding work on the sheet metal 00. After the rounding is completed, the lifting device 5 raises the positioning baffle 9 to the limit height, at which point it no longer obstructs the movement of the sheet metal 00.

[0052] The present invention, through the provision of a double-headed rounded corner grinder 8, can directly round the right angles of the PCB board during the grinding of straight edges, simplifying the initial processing steps of the PCB board; and the double-headed rounded corner grinder 8 has two rounded corner milling cutters 85 with different curvatures, which can quickly make corresponding adjustments to deal with different sized board materials 00 to meet the requirements of use.

[0053] In one embodiment, such as Figure 2 , Figure 3 , Figure 8 and Figure 9 As shown, it also includes: guide side plates 10 symmetrically protruding on both sides of the entrance to the entry area. A slope 101 is provided on the side of the guide side plate 10 away from the delivery area. The plate material 00 entering from the entrance to the entry area can be corrected by the guide side plates 10 on both sides to prevent the plate material 00 from being conveyed at an angle. The protruding edge of the guide side plate 10 is flush with the bottom of the grinding groove 43 of the grinding wheel 42. In this way, the plate material 00 can slide directly into the grinding groove 43 after being corrected by the guide side plate 10.

[0054] An anti-deviation pressure roller 11 is installed on the entry area, and the anti-deviation pressure roller 11 is adjacent to the delivery area and located at the junction of the entry area and the delivery area. There is a gap between the anti-deviation pressure roller 11 and the conveying roller group 2 that only allows the sheet material 00 to pass through. During the process of the sheet material 00 being transferred from the entry area to the delivery area, since the conveying directions of the entry area and the delivery area are different, when part of the sheet material 00 falls on the delivery area, the anti-deviation pressure roller 11 presses down the sheet material 00 that is still on the entry area, which can effectively prevent the sheet material 00 from becoming skewed before it has completely fallen on the delivery area.

[0055] Waste collection frames 12 are provided in the entry and exit areas. The grinding wheel 42 and the double-headed rounded corner grinder 8 are placed inside the waste collection frame 12. At the same time, the waste collection frame 12 has a passage opening 121 to allow the sheet metal 00 to pass through. Therefore, during the operation of the grinding wheel 42 and the double-headed rounded corner grinder 8, the waste particles generated by grinding will fall into the waste collection frame 12, preventing them from splashing onto the sheet metal 00 and affecting subsequent processing. In addition, in order to facilitate the transfer of collected particles, a suction device can also be provided at the bottom of the waste collection frame 12. The suction device can be an air extraction pipe connected to the bottom of the waste collection frame 12, and the other end of the air extraction pipe is connected to a suction pump to remove the collected particles or particles that are splashing due to grinding. Baffles 122 are arranged inside the waste collection frame 12, dividing the bottom receiving space of the waste collection frame 12 into multiple partitions to prevent the particles inside the waste collection frame 12 from being scattered randomly.

[0056] In one embodiment, such as Figure 1 and Figure 10 As shown, it also includes: a support frame 13 fixedly installed at the end of the delivery area; a support step 131 symmetrically arranged at the lower part of the support frame 13; guide rods 132 symmetrically fixedly installed on both sides of the support frame 13; springs 133 sleeved on the guide rods 132; abutments 134 slidably disposed on the guide rods 132 and held at the upper position of the guide rods 132 by the springs 133; abutments 134 having protrusions; a strip-shaped opening opened on the support frame 13; the protrusion of the abutment 134 passing through the opening and sliding freely on the guide rods 132; a pallet 135 placed inside the support frame 13 and supported by the protrusion of the abutment 134; after the polished board material 00 is finally discharged from the delivery area, it will fall onto the pallet 135; as the board material 00 increases, the springs 133 are compressed, causing the pallet 135 to descend; after descending to the bottom, it passes through the support step 131. The pallet 135 is supported; buffer clamps 14 are symmetrically hinged on the upper part of the pallet 13. The buffer clamps 14 on both sides are kept vertically downward by torsion springs. The lower part of the buffer clamp 14 is provided with an inclined extension 141 for contacting the board 00. The total holding force of the torsion springs on both sides is less than the weight of a single board 00. Thus, when the board 00 is discharged from the delivery area, the board 00 will be pushed horizontally between the two buffer clamps 14 and held by the buffer clamps 14 to keep it stable until the board 00 is completely moved from the conveyor roller group 2 into the space between the two buffer clamps 14. At this time, the torsion springs cannot keep the two buffer clamps 14 in a vertical state, so the buffer clamps 14 are separated from each other, and the board 00 falls on the pallet 135 in a straight state. This can effectively prevent the board 00 from falling on the pallet 135 in an inclined or vertical state, causing damage to the board surface.

[0057] like Figure 1 and Figure 11As shown, a feeding mechanism is configured at the entrance of the entry area. After the sheet metal 00 to be ground is placed on the feeding mechanism, it can be fed one sheet at a time to the conveyor roller group 2. The feeding mechanism includes: side plates 15 symmetrically fixedly installed at the entrance of the entry area, and a platform 151 slidably connected to both side plates 15. The platform 151 can slide vertically on the side plates 15. The sheet metal 00 to be ground is stacked on the platform 151. A power output module 152 is fixedly mounted on the upper part of the plate 15. The power output module 152 consists of a motor and a reduction gear box. A transmission screw 153 is rotatably mounted vertically on the side plate 15. The transmission screw 153 is connected to the power output module 152 and is driven to rotate by the power output module 152. The transmission screws 153 arranged on both sides spirally pass through both sides of the platform 151. Therefore, when the transmission screws 153 rotate, the platform 151 can rotate according to the direction of rotation of the transmission screws 153. The device moves up and down on the side plate 15. A linear drive device 154, which is an electric slide rail, is installed on the top of the side plate 15. The moving frame 155 is fixedly connected to the moving end of the linear drive device 154. The linear drive device 154 enables the moving frame 155 to reciprocate. Telescopic push rods 156 are evenly arranged around the moving frame 155. The movable rod of the telescopic push rod 156 is fixedly connected to the suction cup frame 157. When in use, the plate 00 to be sanded is placed on the platform. After the plate 151 is in place, the telescopic push rod 156 drives the suction cup frame 157 downward to attract the uppermost plate 00. Then, the plate 00 is pulled up, and the linear drive device 154 drives the moving frame 155 to move the plate 00 above the conveyor roller group 2 in the entry area. Then, the plate 00 is released and falls onto the conveyor roller group 2. As the number of plates 00 on the platform 151 decreases, the height of the platform 151 is raised accordingly through the transmission screw 153 so that the suction cup frame 157 can attract the plate 00.

[0058] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A PCB board edge grinding device with an adjustment structure, comprising: The L-shaped conveyor body (1) is divided into an entry area and an exit area; the conveyor roller group (2) is arranged perpendicularly to each other on the entry area and the exit area and is driven by the L-shaped conveyor body (1); the transverse push device (21) is composed of a drive screw (22) and a push block (23) connected by a screw, and the push block (23) is driven by the drive screw (22) to move laterally, and the transverse push device (21) is laid on the entry area and the exit area; the pressing wheel (3) is provided in multiples, arranged at intervals on the entry area and the exit area, and a gap is left between it and the conveyor roller group (2) that only allows plate-shaped materials (00) to pass through; The feature is that it further includes: a grinding module (4), which is arranged in pairs as a group, and multiple groups are arranged on the L-shaped conveyor body (1) between the gaps of the pressing wheel (3). The grinding module (4) includes a grinding wheel (42) driven by a first motor (41). The grinding wheel (42) has a concave grinding groove (43). The grinding groove (43) has a trapezoidal cross section, and the width of the groove bottom matches the thickness of the plate-shaped material (00) to be ground. Lifting devices (5), which are arranged in pairs as a group, with a total of two groups, are arranged on the entry area or the delivery area; connecting frame (6) is arranged on the lifting devices (5); second motor (7) is installed on the connecting frame (6); A double-headed rounded corner grinder (8) is provided with two rounded corner cutters (85). The double-headed rounded corner grinder (8) is driven and mounted on a second motor (7). The rounded corner cutters (85) are arranged at an angle with their axis parallel to the surface of the plate material (00) and make right-angle contact with the plate material (00) at this angle. The double-headed rounded corner grinder (8) includes: an intermediate part (81) which is detachably mounted on the second motor (7); a frame (82) which is mounted on the bottom of the intermediate part (81); a driven bevel gear (83) which is symmetrically arranged in the frame (82); and a driving bevel gear (84) which is arranged on the intermediate part (81) and meshes with the driven bevel gear (83) and is driven by the second motor (7). The rounded corner cutters (85) pass through the frame (82) and are connected to the driven bevel gear (83). A positioning baffle (9) is fixedly installed on the second motor (7); the bottom of the positioning baffle (9) protrudes from the center line of the rounded end mill (85); a guide plate (10) is protruding on both sides of the entrance of the entry area; the guide plate (10) has an inclined surface (101) on the side away from the delivery area, and the protruding edge of the guide plate (10) is flush with the bottom of the grinding groove (43) of the grinding wheel (42); An anti-biasing roller (11) is installed on the inlet area and adjacent to the outlet area; a gap is left between the anti-biasing roller (11) and the conveying roller group (2) to allow only plate-shaped material (00) to pass through; a waste collection frame (12) is arranged on the inlet area and the outlet area, and the grinding wheel (42) and the double-headed rounded corner grinder (8) are placed inside it; the waste collection frame (12) has a passage notch (121) to allow plate-shaped material (00) to pass through; a suction device for extracting particulate matter is connected to the bottom of the waste collection frame (12); A feeding mechanism is configured at the entrance of the entry area to intermittently feed the conveying roller group (2); the feeding mechanism includes: a side plate (15), symmetrically installed at the entrance of the entry area; a platform (151), slidably arranged on both sides of the side plate (15); a power output module (152), installed on the upper part of the side plate (15); a transmission screw (153), rotatably arranged on the side plate (15) and driven by the power output module (152), the transmission screw (153) spirally passing through the platform (151); a linear drive device (154), arranged on the top of the side plate (15); a moving frame (155), connected to the linear drive device (154) for reciprocating translation; a telescopic push rod (156), arranged on the moving frame (155); and a suction cup frame (157), connected to the telescopic push rod (156) for vertical movement.

2. The PCB board edge grinding device with an adjustment structure according to claim 1, characterized in that: The waste collection box (12) is provided with partitions (122).

3. The PCB board edge grinding device with an adjustment structure according to claim 1, characterized in that, Also includes: A shelf (13) is installed at the end of the delivery area; A support step (131) is symmetrically arranged at the lower part of the support frame (13); a guide rod (132) is installed on both sides of the support frame (13); a spring (133) is sleeved on the guide rod (132); a stop block (134) is slidably arranged on the guide rod (132) and held at the upper part of the guide rod (132) by the spring (133); the support frame (13) has an opening for the protrusion of the stop block (134) to pass through; a support plate (135) is supported by the protrusion of the stop block (134) arranged on both sides; a buffer clamp (14) is symmetrically hinged at the upper part of the support frame (13) and held vertically downward by a torsion spring; the lower part of the buffer clamp (14) is provided with an inclined extension (141) for contacting the plate material (00), and the total holding force of the torsion springs on both sides is less than the weight of a single plate material (00).

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