Automatic edge grinding machine for PCB (Printed Circuit Board)

Abstract

The utility model relates to a grinding machine, in particular to an automatic edge grinding machine for a printed circuit board (PCB). The automatic edge grinding machine for the PCB comprises a base, a mounting frame, a guide rod, a sliding block and the like, a mounting frame is fixedly connected to the upper portion in the base, a guide rod is fixedly connected to the upper portion of the mounting frame, and two sliding blocks are slidably connected to the outer side of the guide rod. According to the utility model, the plurality of rotating plates and the plurality of discharging platforms are arranged, so that the grinding work of the edges of a plurality of PCBs can be completed at one time when the PCBs are ground, and the efficiency is high; according to the utility model, the motor and the bidirectional screw rod are arranged to quickly adjust the distance between the grinding machines according to the size of a PCB, and meanwhile, the missing gear and the rack are arranged to realize the synchronous rotation of a plurality of rotating plates, so that the manual single adjustment is not needed, and the operation is quick and convenient.

Description

Technical Field

[0001] The utility model relates to a grinding machine, in particular to an automatic edge grinding machine for a PCB board. Background Art

[0002] PCB (Printed Circuit Board) is a substrate used to carry various electronic components. It connects various components into a whole to realize various functions of electronic equipment. The quality and performance of PCB circuit boards directly affect the stability, reliability and service life of electronic equipment. Therefore, fine edge grinding of PCB circuit boards is a key link to improve product quality and performance. The significance of fine edge grinding Fine grinding refers to removing burrs, protrusions, depressions and other defects on the edges of PCB circuit boards through certain process methods to make the surface smooth, reduce contact resistance and improve signal.

[0003] The Chinese patent with publication number CN219255059U discloses a PCB circuit board edge grinding device, including a base, a support frame and a grinding device; the grinding device includes a positioning clamping structure and a grinding structure, wherein the grinding structure includes an electric linear guide, a mounting seat, a drive motor, a connecting rod, a grinding wheel, a positioning seat, a moving block and a guide rail; the electric linear guide is installed at the rear position of the lower side of the top plate, the mounting seat is slidably connected to the electric linear guide through a slider, the drive motor is installed on the mounting seat, the upper end of the connecting rod is connected to the driving end of the drive motor, the grinding wheel is installed on the connecting rod, the guide rail is installed on the upper side of the base, extends left and right, and is parallel to the electric linear guide, the moving block is slidably installed on the guide rail, the positioning seat is installed on the moving block, and the bottom end of the connecting rod is inserted in the positioning seat. The device can ensure that the grinding wheel moves smoothly in the horizontal direction, avoids the grinding wheel from being deflected due to long-term work, and ensures the grinding effect, but in actual use, only a single PCB board can be edge-grinded at a time, the processing efficiency is low, and it cannot effectively meet the needs of batch processing.

[0004] To this end, the utility model provides an automatic PCB board edge grinding machine which is provided with multiple material discharge platforms and can complete the grinding work of the edges of multiple PCB boards at one time when grinding the PCB boards, has high efficiency and meets the needs of batch processing. Utility Model Content

[0005] In order to overcome the shortcomings of the existing device that when in use, only a single PCB board can be edge ground at a time, the processing efficiency is low, and the needs of batch processing cannot be effectively met, the purpose is to provide an automatic PCB board edge grinding machine which is provided with multiple discharge platforms and can complete the grinding of the edges of multiple PCB boards at one time when grinding the PCB boards, has high efficiency, and meets the needs of batch processing.

[0006] The technical implementation scheme of the utility model is: an automatic edge grinder for a PCB board, comprising a base, a mounting frame, a guide rod, a slider, a grinder, a slide rail, a cylinder, a slide plate, a fixed rod, a connecting frame, a rotating plate and a suction cup, a mounting frame is fixedly connected to the upper inner part of the base, a guide rod is fixedly connected to the upper part of the mounting frame, two sliders are slidably connected to the outer side of the guide rod, a grinder is installed at the lower part of each slider, a slide rail is symmetrically installed front and back at the lower left part of the base, a slide plate is slidably provided between the slide rails, a cylinder is fixedly installed between the right parts of the slide rails, a cylinder telescopic rod is connected to a slide plate, two fixed rods are fixedly welded on the top of the slide plate, no less than four connecting frames are evenly spaced and connected between the left parts of the fixed rods, a rotating plate is rotatably connected to the left part of the connecting frame, a plurality of suction cups are installed on the rotating plate, and the top of the suction cup is in the same height as the top side of the rotating plate.

[0007] Furthermore, it also includes a motor and a bidirectional screw rod. The bidirectional screw rod is rotatably mounted on the fixed frame, the motor is mounted at the rear of the fixed frame, and the motor output shaft is fixedly connected to the rear of the bidirectional screw rod.

[0008] Furthermore, it also includes a slide plate 2, a fixed rod 2, a connecting frame 2, a rack and a missing gear. A slide plate 2 is slidably provided between the left part of the slide rail, the slide plate 1 is fixedly connected to the sliding plate 2, and two fixed rods 2 are slidably provided on the upper part of the slide plate 2. There are no less than four connecting frames 2 evenly spaced and connected between the fixed rods 2. The right part of the connecting frame 2 is fixedly connected with a rack, and the left part of the connecting frame 1 is rotatably installed with a missing gear. The missing gears are fixedly connected to a nearby rotating plate, and the missing gears are meshed with racks at the same height.

[0009] Furthermore, the base also includes a material receiving groove, and the lower part of the base is provided with the material receiving groove.

[0010] Furthermore, the friction coefficients between the rotating plate and the fixed frame, and between the guide rod and the sliding block are relatively large.

[0011] The utility model has the following advantages:

[0012] 1. The utility model provides multiple rotating plates and multiple material discharging platforms, and can complete the grinding of the edges of multiple PCB boards at one time when grinding the PCB boards, which is more efficient.

[0013] 2. The utility model can quickly adjust the distance between the grinders according to the size of the PCB board by setting the motor and the bidirectional screw rod, and at the same time set the missing gear and the rack to realize the synchronous rotation of multiple rotating plates without manual individual adjustment, which is relatively fast and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a cross-sectional view of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the components such as the slider, grinder and motor of the utility model.

[0017] Figure 4 The utility model is a three-dimensional structural schematic diagram of the cylinder, the slide plate and the fixing rod.

[0018] Figure 5 It is a cross-sectional view of the rotating plate, suction cup and slide plate of the utility model.

[0019] In the above drawings: 1: base, 2: mounting frame, 3: guide rod, 4: slider, 5: grinder, 6: motor, 61: bidirectional screw, 7: slide rail, 71: cylinder, 8: slide plate one, 81: fixed rod one, 82: connecting frame one, 83: rotating plate, 84: suction cup, 9: slide plate two, 90: fixed rod two, 91: connecting frame two, 92: rack, 93: missing gear, 10: receiving trough. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1: A PCB board automatic edge grinding machine, such as Figure 1-5As shown, it includes a base 1, a mounting frame 2, a guide rod 3, a slider 4, a grinder 5, a slide rail 7, a cylinder 71, a slide plate 8, a fixed rod 81, a connecting frame 82, a rotating plate 83 and a suction cup 84. The upper part of the base 1 is fixedly connected to the mounting frame 2, and the upper part of the mounting frame 2 is fixedly connected to the guide rod 3 for guiding and limiting. The outer side of the guide rod 3 is slidably connected to two sliders 4. The lower part of the slider 4 is equipped with a grinder 5. The grinder 5 consists of a transmission motor and a grinding rod. The grinding rod has a high degree of grinding fineness. The lower left part of the base 1 is symmetrically installed with a slide rail 7. There is a sliding mechanism between the slide rails 7 to carry and move materials for grinding. A cylinder 71 for providing material moving power is fixedly installed between the slide plate 8 and the right part of the slide rail 7. The telescopic rod of the cylinder 71 is connected to the slide plate 8 to drive the slide plate 8 to move left and right. Two fixed rods 81 are fixedly welded on the top of the slide plate 8. No less than four connecting frames 82 are evenly spaced and connected between the left parts of the fixed rods 81. The left parts of the connecting frames 82 are rotatably connected to a rotating plate 83 for holding a PCB board. A plurality of suction cups 84 are installed on the rotating plate 83. The top of the suction cup 84 is at the same height as the top side of the rotating plate 83. When a PCB board is placed flat on the rotating plate 83, the suction cup 84 will suck it to avoid displacement due to force during processing.

[0022] Initially, the telescopic rod of the cylinder 71 is in an extended state, and the slide plate 8 is located at the left position of the slide rail 7. When it is necessary to grind the edges of multiple PCB boards, first, the multiple PCB boards are neatly placed one by one on different rotating plates 83, and the front and rear sides of the vertically multi-layered PCB boards are in the same position. Then, the suction cup 84 on the rotating plate 83 is controlled to suck the flat PCB board to prevent it from being displaced by force. Then, according to the distance between the front and rear sides when it is placed flat on the rotating plate 83, the two sliders 4 are moved in opposite directions, so that when the slide plate 8 moves over, the grinder 5 on the slider 4 will contact the front and rear edges of the PCB board with the front and rear grinders 5 respectively. When the PCB board is fixed on the rotating plate 83, the grinder 5 is started, and the cylinder 71 is controlled to retract the telescopic rod. The telescopic rod of the cylinder 71 drives the slide plate 8 to move slowly and evenly to the right. The PCB board moves synchronously to the right with the action of the cylinder 71, and gradually contacts the grinders 5 on the front and rear sides. The edges of the PCB boards on the multi-layer rotating plates 83 of the grinders 5 are polished. When the PCB board moves to the right until the grinder 5 is out of contact, the cylinder 71 is controlled to extend the telescopic rod to the left, driving the slide plate 8 and the row of PCB boards to move to the left and reset. In the process of returning to the position, the grinder 5 will perform secondary grinding on the edge of the PCB board. When the slide plate 8 is reset, the rotating plates 83 are rotated 90 degrees clockwise, so that the PCB board on the rotating plates 83 is rotated 90 degrees. At this time, the unpolished edges of the PCB board are located on the front and rear sides of the rotating plates 83. The positions of the two grinders 5 are adjusted according to the distance between the front and rear sides of the PCB board after rotation. The above polishing work is repeated. After the edge grinding work of the PCB board is completed, the air source on the suction cup 84 is cut off and the PCB board is taken away.

[0023] Embodiment 2: Based on embodiment 1, Figure 1-3 As shown, it also includes a motor 6 and a bidirectional screw 61. The bidirectional screw 61 is rotatably installed on the fixed frame. The bidirectional screw 61 is inserted between the two sliders 4, and the two sliders 4 are respectively located on the outer sides of the same-side threads on the bidirectional screw 61. They move to opposite positions as the bidirectional screw 61 rotates. A motor 6 for providing power is installed at the rear of the fixed frame. The output shaft of the motor 6 is fixedly connected to the rear of the bidirectional screw 61. The motor 6 and the bidirectional screw 61 cooperate to automatically adjust the distance between the two grinders 5.

[0024] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, it also includes a slide plate 29, a fixed rod 290, a connecting frame 291, a rack 92 and a missing gear. A slide plate 29 is slidably provided between the left part of the slide rail 7, and a slide plate 18 is fixedly connected to the sliding plate 2. When the slide plate 18 moves driven by the cylinder 71, the slide plate 29 moves synchronously with the slide plate 18. Two fixed rods 290 are slidably provided on the upper part of the slide plate 29. No less than four connecting frames 291 are evenly spaced and connected between the fixed rods 290. The right part of the connecting frame 291 is fixedly connected with a rack 92, and the left part of the connecting frame 182 is rotatably installed with a missing gear 93. The missing gears are fixedly connected to a nearby rotating plate 83, and the missing gears 93 are meshed with the rack 92 at the same height, and rotate a certain angle with the movement of the rack 92.

[0025] like Figure 1-2 As shown, the base 1 also includes a material receiving trough 10. The base 1 has a material receiving trough at the lower part thereof. When grinding, the generated debris will fall into the material receiving trough 10, which is convenient for centralized cleaning.

[0026] After the PCB board is placed on the suction cup 84 of the rotating plate 83, the motor 6 is started, and the rotation of the motor 6 drives the bidirectional screw rod 61 to rotate. The two sliders 4 on the bidirectional screw rod 61 move oppositely and adjust the position according to the distance between the front and rear sides of the PCB board under the rotation of the screw rod. At the same time, when the edges of the PCB board on the rotating plate 83 are polished, it is necessary to rotate the rotating plate 83, by pushing the fixing rod 90 backward, the fixing rod 90 drives the rack 92 on the connecting frame to move backward, driving the meshing missing gear to rotate clockwise. When the rotating plate 83 rotates 90 degrees, the pushing of the fixing rod 90 is stopped. Through the missing gear and the rack 92, the rotation of multiple rotating plates 83 is completed at one time, without manual individual adjustment, which is relatively quick and convenient. The debris generated during grinding will fall into the receiving trough 10 below under the action of gravity, which is easy to clean.

[0027] In a preferred embodiment, the friction coefficients between the rotating plate 83 and the fixed frame, and between the guide rod 3 and the slider 4 are relatively large, and are not easily displaced by force during processing.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. An automatic edge grinding machine for a PCB board, comprising a base (1), a mounting frame (2), a guide rod (3), a slider (4) and a grinder (5), wherein the upper inner portion of the base (1) is fixedly connected to the mounting frame (2), the upper portion of the mounting frame (2) is fixedly connected to the guide rod (3), the outer side of the guide rod (3) is slidably connected to two sliders (4), and the lower portion of each slider (4) is equipped with a grinder (5); Its characteristics are: The invention also comprises a slide rail (7), a cylinder (71), a slide plate (8), a fixed rod (81), a connecting frame (82), a rotating plate (83) and a suction cup (84). The slide rail (7) is symmetrically installed at the lower left part of the base (1) in the front and rear directions. A slide plate (8) is slidably installed between the slide rails (7). A cylinder (71) is fixedly installed between the right parts of the slide rails (7). The telescopic rod of the cylinder (71) is connected to the slide plate (8). Two fixed rods (81) are fixedly welded to the top of the slide plate (8). There are no less than four connecting frames (82) evenly spaced and connected between the left parts of the fixed rods (81). The left parts of the connecting frames (82) are all rotatably connected to the rotating plate (83). A plurality of suction cups (84) are installed on the rotating plate (83). The top of the suction cup (84) is at the same height as the top of the rotating plate (83).

2. The automatic edge grinding machine for PCB board according to claim 1, characterized in that: It also includes a motor (6) and a bidirectional screw rod (61), wherein the bidirectional screw rod (61) is rotatably mounted on a fixed frame, the motor (6) is mounted at the rear of the fixed frame, and the output shaft of the motor (6) is fixedly connected to the rear of the bidirectional screw rod (61).

3. The automatic edge grinding machine for PCB board according to claim 2, characterized in that: The invention also comprises a slide plate (9), a fixed rod (90), a connecting frame (91), a rack (92) and a missing gear. The slide plate (9) is slidably arranged between the left part of the slide rail (7). The slide plate (8) is fixedly connected to the slide plate (2). Two fixed rods (90) are slidably arranged on the upper part of the slide plate (9). No less than four connecting frames (91) are evenly spaced and connected between the fixed rods (90). The right part of the connecting frame (91) is fixedly connected to a rack (92). The left part of the connecting frame (82) is rotatably installed with a missing gear (93). The missing gear (93) is fixedly connected to a rotating plate (83) adjacent to the connecting frame (83), and the missing gear (93) is meshed with the rack (92) at the same height.

4. The automatic edge grinding machine for PCB board according to claim 3 is characterized in that: It also includes a material receiving groove, and a material receiving groove (10) is opened in the lower part of the base (1).

5. The automatic edge grinding machine for PCB board according to claim 4, characterized in that: The friction coefficients between the rotating plate (83) and the fixed frame, and between the guide rod (3) and the slide block (4) are relatively large.

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