Positioning base plate for circuit board drilling

Abstract

The utility model relates to a base plate, in particular to a positioning base plate for circuit board drilling. The positioning base plate for drilling the circuit board comprises a mounting plate, a base plate body, a first positioning hole, an air suction hole, a connector and the like. A base plate is slidably arranged in the mounting plate, a plurality of first positioning holes are formed in the upper portion of the base plate, at least two suction holes are formed in each of the left side and the right side of the base plate, and two connectors are connected to the rear portion of the base plate. After the circuit board is placed on the base plate, the circuit board is pushed into a preset area through the air cylinder and the push plate, manual adjustment and placement of people are not needed, the first positioning hole is formed in the base plate in advance through the hole site of the circuit board, it is guaranteed that the base plate supports the periphery of the hole site, and meanwhile it is avoided that no chip removal hole exists in the base plate; when the circuit board is drilled by the drill bit, the drill bit cannot effectively open the hole, the first positioning hole can guide and unload the downward penetrating action of the drill bit at the moment that the drill bit drills through the circuit board, and the situation that the production quality of the circuit board is affected by burrs, laces and the like of formed holes due to shaking of the drill bit is reduced.

Description

Technical Field

[0001] The utility model relates to a pad, in particular to a positioning pad for drilling holes in a circuit board. Background Art

[0002] The pad during circuit board drilling is placed at the bottom layer of the substrate to be drilled, which is the end point of the drill bit's stroke. It protects the drill needle and the table top. The drill bit rotates at high speed in the pad. Only when the hardness, material and structure of the pad are suitable will it avoid generating excessively high temperatures, thereby protecting the drill needle.

[0003] A Chinese patent with publication number CN207560473U discloses a pad used in drilling printed circuit boards. Several through holes need to be drilled on the printed circuit board. The pad includes a first pad and a second pad stacked below the first pad for being placed on a suction table with a suction port. The first pad has a first through hole running through it from top to bottom, and the second pad has a second through hole running through it from top to bottom. The first and second through holes are at least partially aligned with the through hole and the suction port in the up and down direction. The diameter of the first through hole is larger than the diameter of the through hole on the printed circuit board, and the diameter of the second through hole is larger than the diameter of the first through hole. When drilling holes in the printed circuit board, the debris of the above-mentioned pad falls into the first through hole of the first pad and the second through hole of the second pad in turn, and can be sucked away by the suction port of the suction table in a timely and convenient manner, thereby improving production efficiency and product yield. However, before drilling, in order to facilitate the subsequent positioning and punching work, the worker needs to manually adjust the position of the circuit board after placing the circuit board on the pad. The deviation of the position may cause deviation in the punching of the circuit board.

[0004] To this end, the utility model provides a positioning pad for drilling circuit boards which can automatically push the circuit boards into a preset area on the pad after the circuit boards are placed on the pad, without the need for people to manually adjust the placement, thereby reducing the deviation of the placement of the boards. Utility Model Content

[0005] In order to overcome the disadvantage that before drilling processing, in order to facilitate the subsequent positioning and punching work, workers need to manually adjust the position of the circuit board after placing the circuit board on the pad, and the deviation of the position may cause the deviation of the circuit board punching. The purpose is to provide a positioning pad for circuit board drilling that can automatically push the circuit board into a preset area on the pad after the circuit board is placed on the pad, without the need for people to manually adjust the placement, thereby reducing the deviation of the board placement.

[0006] The technical solution is: a positioning pad for drilling holes in a circuit board, including a mounting plate, a pad, a positioning hole, an air suction hole, a joint, a cylinder and a push plate. A pad is slidably arranged inside the mounting plate, a plurality of positioning holes are opened on the upper part of the pad, and no less than two air suction holes are opened on the left and right sides of the pad. Two joints are connected to the rear part of the pad, and the joints are connected to all the air suction holes on the same side through the air flow duct. Cylinders are symmetrically installed on the front and rear sides and the left and right sides of the top of the pad, and push plates are fixedly connected to the movable rods of the cylinders.

[0007] As a further preferred scheme, it also includes a fixed block, a sliding rod and a spring. The left and right sides of the upper part of the pad are fixedly connected with fixed blocks, the sliding rods are slidably provided in the fixed blocks, the outsides of the sliding rods are wound with springs, the two sides of the springs are respectively connected to the fixed block and the sliding rod, and the left and right sides of the upper part of the mounting plate are opened with two positioning holes, and the two positioning holes are in sliding contact with the lower part of the sliding rod.

[0008] As a further preferred solution, it also includes a material receiving frame and a chip removing device. The material receiving frame is fixedly connected to the upper inner part of the pad, and the chip removing device is installed at the rear of the material receiving frame. The chip removing device is connected to the inner cavity of the material receiving frame through a pipeline.

[0009] As a further preferred scheme, it also includes card plates and latches, and limit grooves are symmetrically opened on the left and right sides of the top of the pad, and the width of the two limit grooves on the left is greater than that of the two limit grooves on the right. Card plates are slidably arranged in the limit grooves, and latches are slidably connected to the upper parts of the card plates. Card plate grooves are opened in the card plates, and the two card plates on the left and the two card plates on the right are symmetrically placed front to back, and embedded holes are opened in the lower part of the card plate grooves.

[0010] As a further preferred solution, the first positioning hole on the pad is a through hole and is divided into two sections, and the hole diameter of the upper section is smaller than the hole diameter of the lower section.

[0011] The utility model has the following advantages: after the circuit board is placed on the pad, the circuit board is pushed into a preset area by the cylinder and the push plate, and there is no need for people to manually adjust the placement. At the same time, a positioning hole is pre-opened on the pad through the hole position of the circuit board. While ensuring that the pad plays a supporting role around the hole position, it is avoided that there is no chip removal hole on the pad and the drill bit cannot effectively open the hole. The positioning hole can also guide and unload the drill bit's downward movement at the moment when the drill bit drills through the circuit board, thereby reducing the shaking of the drill bit, which causes burrs and lace on the formed holes, affecting the production quality of the circuit board.

[0012] The utility model can fix the drill bit when drilling by placing a metal plate covering the top side of the circuit board on the card plate, thereby reducing the swing amplitude, offset and slipping of the drill bit during drilling, improving the hole position accuracy and preventing the drill bit from breaking; it is close to the board surface to prevent the substrate (processed sheet material) from having burrs and peaks; it reduces entry burrs; it protects the board surface (protects the copper foil surface of the copper-clad board, or the copper-plated conductive surface of the substrate) to prevent the pressure foot from damaging the board.

[0013] The utility model uses the slide bar and the second positioning hole to facilitate people to quickly position and install the pad on the installation plate without subsequent manual adjustment. At the same time, the slide bar and the second positioning hole are stuck to each other to prevent the pad from being displaced by force after installation. 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 three-dimensional structural schematic diagram of the mounting plate of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the pad of the utility model.

[0017] Figure 4 It is a cross-sectional view of the air intake hole, joint and air flow passage of the utility model.

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the material receiving frame and the chip removing device of the utility model.

[0019] Figure 6 It is a three-dimensional structural schematic diagram of the card plate and the latch of the utility model.

[0020] Among them: 1-mounting plate, 2-pad, 21-positioning hole one, 22-air suction hole, 3-connector, 31-air flow channel, 4-limiting groove, 5-cylinder, 6-push plate, 7-fixing block, 71-slide rod, 72-spring, 74-positioning hole two, 8-material receiving frame, 9-chip removal device, 10-card block, 11-latch. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installing, connecting, and connecting should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Embodiment 1: A positioning pad for drilling a circuit board, such as Figure 1-6 As shown, it includes a mounting plate 1, a pad 2, a positioning hole 21, an air suction hole 22, a joint 3, a cylinder 5 and a push plate 6. The mounting plate 1 is slidably provided with a pad 2. Slide grooves are provided on both sides of the lower left and right sides of the mounting plate 1. The lower part of the pad is set to be a strip plate that fits the mounting plate 1 in a sliding direction. It can slide smoothly back and forth in the mounting plate 1, and the friction force is large when sliding, and a large thrust is required to push. A plurality of positioning holes 21 are opened on the upper part of the pad 2. The opening position and number of the positioning holes 21 must be consistent with the opening position and number of the circuit board to be drilled. The pad 2 There are no less than two air intake holes 22 on both sides, and two joints 3 are connected to the rear of the pad 2. The joint 3 is connected to all the air intake holes 22 on the same side through the air duct 31. It should be noted that the opening of the air intake holes 22 and the air duct needs to be staggered with the positioning hole 21. Cylinders 5 are symmetrically installed on the front and back sides and the left and right sides of the top of the pad 2. Push plates 6 are fixedly connected to the movable rods of the cylinders 5. The pushing strokes of the movable rods of the four cylinders 5 need to be set so that when the circuit board is pushed at the same time, the circuit board will be pushed to the preset position on the pad to achieve rapid positioning.

[0023] Initially, the pad 2 corresponding to the circuit board that needs to be punched is selected and used, the corresponding pad 2 is slid into the mounting plate 1, and the pad 2 is slid and centered on the mounting plate 1. Then, the circuit board that needs to be punched is placed flat on the pad 2. The positioning hole 21 on the pad 2 is opened according to the hole positions that need to be punched on the circuit board. After the circuit board is placed flat, the four cylinders 5 on the pad 2 are controlled to push the push plate 6 at the same time. According to the pushing stroke set by each cylinder 5, the circuit board on the pad 2 will be accurately moved to the preset area, and the hole positions that need to be drilled on the circuit board will be aligned with the positioning hole 21 on the pad 2. The joint 3 on the pad 2 is externally connected to a pumping and pressing device. When the pumping and pressing device is connected to the joint 3, the air suction hole 22 will flow the air near the hole to the pumping and pressing device through the air passage 31, and the flow rate is relatively fast. When an object touches When the pad 2 is close or close to each other, it will be sucked by the suction force generated during the extraction and pressure, and the circuit board on the pad 2 will be sucked by the suction hole 22. The top side of the pad 2 will stably support the bottom side of the circuit board. At this time, the air cylinder 5 is controlled to retract the movable rod to start positioning and punching the circuit board. The debris generated during the punching will fall from the opened positioning hole 21 to the mounting plate 1 under the pad 2. While ensuring that the pad 2 plays a supporting role around the hole position, it is avoided that there is no chip removal hole on the pad 2, and the drill bit cannot effectively open the hole. The positioning hole 21 will also guide and unload the drill bit's downward movement at the moment when the drill bit drills through the circuit board, reduce the shaking of the drill bit, and cause burrs and lace on the hole, which affects the production quality of the circuit board. When the drilling is completed, the external extraction and pressure equipment on the connector 3 is cut off, the suction around the suction port is eliminated, the circuit board is taken away, and the use is completed.

[0024] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 3 and Figure 4 As shown, it also includes a fixed block 7, a slide bar 71 and a spring 72. The left and right sides of the upper portion of the pad 2 are fixedly connected with fixed blocks 7, and slide bars 71 are slidably arranged inside the fixed block 7. Springs 72 are wound around the outer sides of the slide bars 71, and the two sides of the spring 72 are respectively connected to the fixed block 7 and the slide bar 71. Positioning holes 74 are opened on the left and right sides of the upper portion of the mounting plate 1. The positioning holes 74 are in sliding contact with the lower portion of the slide bar 71. The bottom of the slide bar 71 will contact the front sides of the protrusions on the left and right sides of the mounting plate 1. When the pad 2 is pushed backward, the slide bar 71 will be squeezed upward and slide upward. The spring 72 is compressed by force, and then it will slide in contact with the top side of the protrusions on the left and right sides of the mounting plate 1, and the pad 2 will continue to be pushed backward. The slide bar 71 will fall into the positioning holes 74 during the movement.

[0025] like Figure 4-5 As shown, it also includes a material receiving frame 8 and a chip removing device 9. The material receiving frame 8 is fixedly connected to the upper inner part of the pad 2. An air inlet groove is opened at the front of the material receiving frame 8. The chip removing device 9 is installed at the rear of the material receiving frame 8. The chip removing device 9 is connected to the internal cavity of the material receiving frame 8 through a pipeline. When the chip removing device 9 is in use, a large suction force will be generated, and the fallen debris will be sucked away and removed through the pipeline connected to the material receiving frame 8.

[0026] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, it also includes a card plate 10 and a latch 11. The left and right sides of the top of the pad 2 are symmetrically opened with limit grooves 4, and the width of the two limit grooves 4 on the left side is greater than the width of the two limit grooves 4 on the right side. The card plates 10 are slidably arranged in the limit grooves 4. The upper part of the card plates 10 is slidably connected with the latch 11. The card plates 10 are opened with card plate grooves. The card plate grooves in the card plates 10 are used to place metal plates. The metal plates are made of softer material and thinner metal plates. The drill bit can be fixed when drilling, reducing the swing amplitude, offset and slippage of the drill bit during drilling. Improve the hole position accuracy and prevent the drill bit from breaking; stick close to the board surface to prevent the substrate (processed sheet) from having burrs and peaks; reduce entry burrs; protect the board surface (protect the copper foil surface of the copper-clad board, or the copper-plated conductive surface of the substrate) to prevent the pressure foot from damaging the board. The two card blocks 10 on the left and the two card blocks 10 on the right are placed symmetrically front and back, and an embedded hole is opened in the lower part of the card plate groove. After placing the metal plate in the card block 10, press the pin 11, and the softer and thinner metal plate is firmly riveted into the card block 10 through the pin 11 and the embedded hole.

[0027] When the locking cam 72 is in the closed position, the locking cam 73 will be in the closed position, and the spring 72 will be in the open position to lock the locking cam 73 in the closed position, so that the locking cam 73 will be in the open position and the support cam 73 will be in the open position to lock the support cam 73 in the closed position. The edges are stuck into the card slots of the two card plates 10 on the right, and the pin 11 is pressed downward with force. The metal plate is riveted into the card plate 10 on the right through the pin 11 and the embedded hole in the card slot. The left side of the flat metal plate is stuck into the two card plates 10 on the left through the same steps, and the metal plate placed between the four card plates 10 is pulled by sliding the two card plates 10 on the left to adjust the tension. The card plates 10 can also be slid up and down in the limit grooves 4 according to the thickness of the circuit board to adjust the height of the metal plate so that the bottom side of the metal plate fits with the top side of the circuit board. At the same time, when drilling, start the chip removal device 9, the material receiving frame 8 installed on the inner side of the pad 2 will catch the falling debris, and the chip removal device 9 will suck away the fallen debris for cleaning. When use is completed, the chip removal device 9 can be removed from the material receiving frame 8 for cleaning, which is more convenient.

[0028] In a preferred embodiment: the positioning hole 21 on the pad 2 is a through hole and is divided into two sections. The aperture of the upper section is smaller than that of the lower section. The upper section is used to guide the drill bit to reduce the swing amplitude of the drill bit during drilling, and the lower section is used for chip removal to facilitate the timely discharge of debris.

[0029] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the utility model concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A positioning pad for drilling a hole in a circuit board, comprising a mounting plate (1), a pad (2), a positioning hole (21) and an air suction hole (22), wherein the mounting plate (1) is slidably provided with the pad (2), a plurality of positioning holes (21) are formed on the upper portion of the pad (2), and at least two air suction holes (22) are formed on both left and right sides of the pad (2); Features: It also includes a joint (3), a cylinder (5) and a push plate (6). The backing plate (2) is connected to two joints (3) at the rear, and the joints (3) are connected to all the air intake holes (22) on the same side through the air flow passage (31). The cylinders (5) are symmetrically installed on the front and rear sides and the left and right sides of the top of the backing plate (2), and the push plates (6) are fixedly connected to the movable rods of the cylinders (5).

2. A positioning pad for drilling a circuit board as claimed in claim 1, characterized in that: The mounting plate (1) further comprises a fixed block (7), a slide bar (71) and a spring (72). The upper left and right sides of the pad (2) are fixedly connected with the fixed block (7). The fixed block (7) is slidably provided with a slide bar (71). The outer side of the slide bar (71) is wound with a spring (72). The two sides of the spring (72) are respectively connected with the fixed block (7) and the slide bar (71). The upper left and right sides of the mounting plate (1) are provided with a second positioning hole (74). The second positioning hole (74) is in sliding contact with the lower part of the slide bar (71).

3. A positioning pad for drilling a circuit board as claimed in claim 2, characterized in that: It also comprises a material receiving frame (8) and a chip removing device (9); the material receiving frame (8) is fixedly connected to the upper inner part of the pad (2); the chip removing device (9) is installed at the rear of the material receiving frame (8); and the chip removing device (9) is connected to the inner cavity of the material receiving frame (8) through a pipeline.

4. A positioning pad for drilling a circuit board as claimed in claim 3, characterized in that: The invention also comprises a card plate (10) and a latch (11); the top left and right sides of the pad (2) are both symmetrically provided with limit grooves (4); the width of the two limit grooves (4) on the left side is greater than the width of the two limit grooves (4) on the right side; the card plates (10) are slidably arranged in the limit grooves (4); the upper part of the card plates (10) is slidably connected with the latch (11); the card plates (10) are both provided with card plate grooves; the two card plates (10) on the left side and the two card plates (10) on the right side are symmetrically arranged in the front and back; and the lower part of the card plate grooves is provided with embedded holes.

5. A positioning pad for drilling a circuit board as claimed in claim 4, characterized in that: The first positioning hole (21) on the pad (2) is a through hole and is divided into two sections, wherein the hole diameter of the upper section is smaller than the hole diameter of the lower section.

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