HDI circuit board blind hole positioning device

Abstract

The utility model discloses an HDI circuit board blind hole positioning device. The HDI circuit board blind hole positioning device comprises a carrier plate; a mounting groove is formed in the top side of the bottom plate, the bottom side of the carrying plate makes contact with the inner bottom wall of the mounting groove, an adjusting mechanism is arranged on the bottom plate and used for adjusting the position, located in the mounting groove, of the carrying plate, and a plurality of storage grooves are formed in the inner bottom wall of the mounting groove at equal intervals; and the telescopic positioning mechanism is arranged on the bottom side of the carrying plate. When the improved circuit board blind hole positioning device is used, the moving distance of the circuit board can be accurately monitored when the circuit board moves, the blind hole positioning operation of the circuit board is accurate, and after the circuit board is adjusted, a constraint limiting state can be automatically applied to the circuit board, so that the circuit board can be accurately positioned under the condition that the carrying plate is not subjected to large external force. The carrying plate stably keeps the position after blind hole positioning is completed, and the blind hole positioning operation of the device is stable.

Description

Technical Field

[0001] This utility model relates to the technical field of blind hole positioning devices for circuit boards, and particularly to blind hole positioning devices for HDI circuit boards. Background Technology

[0002] HDI (High-Density Interconnect) boards are a technology specifically designed for manufacturing printed circuit boards. They utilize micro-blind vias, resulting in extremely high circuit density, making them particularly suitable for applications requiring high integration. Blind vias are through-holes that connect only an outer layer to one or more adjacent inner layers, without penetrating the entire circuit board.

[0003] In some existing circuit board blind hole positioning devices, the relative position between the circuit board and the drilling mechanism is adjusted by moving the circuit board to complete the blind hole positioning operation. The movement of the circuit board is generally driven by a threaded rod. Due to the wear of various components, such as the threaded rod and the carrier plate, the position adjustment of the circuit board may have a certain positional deviation, affecting the position adjustment accuracy of the circuit board. Furthermore, after the circuit board is adjusted, the circuit board may have a certain degree of positional deviation due to external forces, affecting the blind hole positioning operation. Utility Model Content

[0004] The purpose of this invention is to provide a blind via positioning device for HDI circuit boards, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a blind via positioning device for HDI circuit boards, comprising a carrier board;

[0006] Also includes:

[0007] The base plate has an installation groove on its top side, and the bottom side of the carrying plate is in contact with the inner bottom wall of the installation groove. The base plate is provided with an adjustment mechanism for adjusting the position of the carrying plate in the installation groove. Several storage slots are provided at equal intervals on the inner bottom wall of the installation groove.

[0008] A telescopic positioning mechanism is located on the bottom side of the carrying plate, and a pressure monitoring mechanism is provided inside the bottom plate to monitor the pressure in the storage tank.

[0009] Preferably, the adjustment mechanism includes a first threaded rod and a second threaded rod, which are threaded together in a cross shape and mounted on the carrier plate. The first threaded rod is located above the second threaded rod. Two motors are provided on the outer side of the base plate, and the drive ends of the two motors are fixedly connected to the first threaded rod and the second threaded rod, respectively.

[0010] Preferably, a plurality of rectangular holes are provided on the outer wall of the base plate, and a slider with an I-shaped arrangement is slidably installed in the rectangular holes. Both ends of the first threaded rod and both ends of the second threaded rod rotatably pass through the corresponding sliders, and the housing of the motor is fixedly connected to the corresponding sliders.

[0011] Preferably, the telescopic positioning mechanism includes several positioning blocks, and circular grooves are provided at the four corners of the bottom side of the carrier plate. Elastic rubber blocks are slidably installed in the circular grooves, and the tops of the positioning blocks are slidably installed in the corresponding circular grooves.

[0012] Preferably, the positioning block is ball-shaped, and the side of the elastic rubber block closest to the corresponding positioning block is arc-shaped and contacts the outer wall of the corresponding positioning block.

[0013] Preferably, the pressure monitoring mechanism includes a pressure sensor, a rectangular cavity is formed at the bottom of the base plate, the interior of which communicates with the interior of the storage tank, and both the interior of the rectangular cavity and the interior of the storage tank are filled with gas. A piston plate is slidably installed in the storage tank, and the pressure sensor is located at the center of the storage tank, with the bottom end of the pressure sensor extending outside the base plate and fixedly connected to the base plate.

[0014] This utility model has the following beneficial effects:

[0015] When this improved circuit board blind hole positioning device is used, it can accurately monitor the moving distance of the circuit board as it moves, making the blind hole positioning operation of the circuit board more precise. After the circuit board is adjusted, it can automatically apply a constraint limit state to the circuit board, so that the carrier board can stably maintain the position after the blind hole positioning is completed without being subjected to large external forces. The blind hole positioning operation of the device is more stable. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the overall structure of this utility model;

[0018] Figure 2 This is a perspective view of the base plate and adjustment mechanism of this utility model;

[0019] Figure 3 This is a perspective view of the overall structure of part of the first threaded rod and part of the second threaded rod of this utility model;

[0020] Figure 4 This is a perspective view of the internal structure of the carrier plate of this utility model after it has been inverted;

[0021] Figure 5 This utility model Figure 4 Enlarged view of the structure at point A in the middle;

[0022] Figure 6 This is a front view of the internal structure of part of the base plate of this utility model.

[0023] In the diagram: 1. Carrier plate; 2. Base plate; 3. Mounting groove; 4. Adjustment mechanism; 41. First threaded rod; 42. Second threaded rod; 43. Motor; 44. Rectangular hole; 45. Slider; 5. Storage groove; 6. Telescopic positioning mechanism; 61. Circular groove; 62. Elastic rubber block; 63. Positioning block; 7. Pressure monitoring mechanism; 71. Rectangular cavity; 72. Piston plate; 73. Pressure sensor. Detailed Implementation

[0024] To make the technical solution and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] This utility model provides a technical solution: (Refer to...) Figure 1 - Figure 6 The present invention discloses a blind hole positioning device for HDI circuit boards, comprising a carrier plate 1;

[0026] Also includes:

[0027] The base plate 2 has an installation groove 3 on its top side, and the bottom side of the carrying plate 1 is in contact with the inner bottom wall of the installation groove 3. The base plate 2 is provided with an adjustment mechanism 4 for adjusting the position of the carrying plate 1 in the installation groove 3. Several storage grooves 5 are provided at equal intervals on the inner bottom wall of the installation groove 3.

[0028] The telescopic positioning mechanism 6 is located on the bottom side of the carrying plate 1, and the pressure monitoring mechanism 7 is provided in the bottom plate 2 to monitor the pressure in the storage tank 5.

[0029] In this embodiment, please refer to Figure 1 - Figure 6 As shown, when using this improved circuit board blind hole positioning device, first install the circuit board onto the carrier plate 1 (please refer to...). Figure 1 As shown, the carrier plate 1 is equipped with a clamping and positioning mechanism for clamping and positioning the circuit board on the carrier plate 1, thus completing the installation of the circuit board;

[0030] When positioning blind holes on the circuit board, the adjusting mechanism 4 drives the carrier plate 1 to slide within the mounting groove 3, thereby adjusting the position of the circuit board and the drilling mechanism of the drilling equipment. (The base plate 2 is fixedly mounted on the platform of the empty equipment with bolts, and the drilling mechanism of the drilling equipment completes the opening of blind holes on the circuit board.) During the sliding process of the carrier plate 1 within the mounting groove 3, please refer to... Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the telescopic positioning mechanism 6 is aligned with the storage tanks 5 at different positions in sequence. After the telescopic positioning mechanism 6 is aligned with the storage tank 5, part of the telescopic positioning mechanism 6 is inserted into the storage tank 5. At this time, the pressure monitoring mechanism 7 detects the change in pressure in the storage hole, thereby determining the distance the carrier plate 1 has moved. The blind hole positioning of the device is relatively accurate. After the position of the carrier plate 1 is adjusted, the telescopic positioning mechanism 6 and the storage tank 5 are automatically used to apply a constraint limit state to the carrier plate 1, so that the carrier plate 1 can stably maintain the position after the blind hole positioning is completed without being subjected to large external forces. The blind hole positioning operation of the device is relatively stable.

[0031] In a further preferred embodiment of this utility model, such as Figure 1 - Figure 3 As shown, the adjustment mechanism 4 includes a first threaded rod 41 and a second threaded rod 42, which are threaded together in a cross shape and installed on the carrier plate 1. The first threaded rod 41 is located above the second threaded rod 42. Two motors 43 are provided on the outer side of the base plate 2, and the driving ends of the two motors 43 are fixedly connected to the first threaded rod 41 and the second threaded rod 42 respectively.

[0032] In this embodiment, please refer to Figure 1 and 3 As shown, when adjusting the position of the loading plate 1 in the mounting groove 3, the motor 43 starts to drive the first threaded rod 41 or the second threaded rod 42 to rotate. Due to the mutual contact between the loading plate 1 and the bottom wall of the mounting groove 3, the rotating first threaded rod 41 or the rotating second threaded rod 42 drives the loading plate 1 to move longitudinally or laterally back and forth in the mounting groove 3, and the thrust applied to the loading plate 1 is relatively large.

[0033] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 3 As shown, a number of rectangular holes 44 are opened opposite each other on the outer wall of the base plate 2. Sliding sliders 45 in the shape of I-beams are slidably installed in the rectangular holes 44. Both ends of the first threaded rod 41 and the two ends of the second threaded rod 42 are respectively rotated through the corresponding sliders 45. The housing of the motor 43 is fixedly connected to the corresponding sliders 45.

[0034] In this embodiment, please refer to Figure 2and Figure 3 As shown, as the carrier plate 1 moves, the slider 45 moves synchronously within the groove and moves together with the carrier plate 1. The slider 45 and the carrier plate 1 provide a mounting position for the motor 43, and the movement trajectory of the carrier plate 1 is constrained by the mutual contact between the slider 45 and the inner wall of the rectangular hole 44, so that the carrier plate 1 slides in a linear trajectory.

[0035] In a further preferred embodiment of this utility model, such as Figure 4 and Figure 5 As shown, the telescopic positioning mechanism 6 includes several positioning blocks 63. Circular grooves 61 are provided at the four corners of the bottom side of the loading plate 1. Elastic rubber blocks 62 are slidably installed in the circular grooves 61, and the top of the positioning blocks 63 is slidably installed in the corresponding circular grooves 61.

[0036] In this embodiment, please refer to Figure 1 , Figure 4 and Figure 5 As shown, when the telescopic positioning mechanism 6 is aligned with the storage tank 5, the elastic rubber block 62 deforms and pushes the positioning block 63, which can directly push part of the positioning block 63 into the storage tank 5. Due to the mutual contact between the positioning block 63 and the inner wall of the storage tank 5, a constrained positioning state can be applied to the carrying plate 1, so that the position of the carrying plate 1 on the base plate 2 remains stable. The device has a simple structure and a high degree of automation, which reduces the production cost of the device.

[0037] In a further preferred embodiment of this utility model, such as Figure 5 As shown, the positioning block 63 is ball-shaped, and the elastic rubber block 62 is arc-shaped on the side close to the corresponding positioning block 63 and contacts the outer wall of the corresponding positioning block 63.

[0038] In this embodiment, please follow Figure 1 , Figure 4 and Figure 5 As shown, as the carrier plate 1 moves, due to the mutual contact between the outer arc surface of the positioning block 63 and the opening edge of the storage tank 5, the positioning block 63 can be squeezed out of the storage tank 5 along the outer arc surface of the positioning block 63 and the elastic rubber block 62 is compressed. There is no need to set up an additional drive structure to adjust the position of the positioning block 63, which reduces the production cost of the device. Moreover, the rolling of the positioning block 63 can greatly reduce the resistance encountered by the carrier plate 1 when it moves.

[0039] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 6As shown, the pressure monitoring mechanism 7 includes a pressure sensor 73. A rectangular cavity 71 is opened at the bottom of the base plate 2, and its interior is connected to the interior of the storage tank 5. Both the interior of the rectangular cavity 71 and the interior of the storage tank 5 are filled with gas. A piston plate 72 is slidably installed in the storage tank 5. The pressure sensor 73 is located at the center of the storage tank 5, and the bottom end of the pressure sensor 73 extends to the outside of the base plate 2 and is fixedly connected to the base plate 2.

[0040] In this embodiment, please refer to Figure 2 and Figure 6 As shown, when part of the positioning block 63 is inserted into the storage tank 5, due to the mutual contact between the ball and the piston plate 72, part of the gas in the storage tank 5 can be pushed into the rectangular cavity 71 through the piston plate 72, thereby causing the pressure monitored by the pressure sensor 73 to change (the air filled in the storage tank 5 and the rectangular cavity 71 is high-pressure air). When the positioning block 63 is removed from the storage tank 5, due to the push of the gas in the storage tank 5 on the piston plate 72, the piston plate 72 automatically moves upward and resets.

[0041] Working principle: When using this improved circuit board blind hole positioning device, the circuit board is first clamped and fixed to the corresponding position on the carrier plate 1 by the clamping and positioning mechanism on the carrier plate 1, and the installation of the circuit board is completed.

[0042] When positioning blind holes on a circuit board, motor 43 starts and drives the first threaded rod 41 and the second threaded rod 42 to rotate in sequence. Due to the mutual contact between the carrier plate 1 and the bottom wall of the mounting groove 3, the rotating first threaded rod 41 or the rotating second threaded rod 42 drives the carrier plate 1 to move longitudinally or laterally back and forth in the mounting groove 3, thereby adjusting the position of the circuit board and the drilling mechanism of the drilling equipment, thus completing the blind hole positioning operation of the circuit board.

[0043] During the sliding process of the carrier plate 1 in the mounting groove 3, as the carrier plate 1 slides, due to the mutual contact between the outer arc surface of the positioning block 63 and the opening edge of the storage groove 5, the positioning block 63 can be squeezed out of the storage groove 5 along the outer arc surface of the positioning block 63 and the elastic rubber block 62 is compressed. At the same time, due to the push of the piston plate 72 by the gas in the storage groove 5, the piston plate 72 automatically moves upward and resets, automatically releasing the constrained positioning state of the carrier plate 1, without affecting the drive of the threaded rod on the carrier plate 1.

[0044] After the positioning block 63 is aligned with the storage tank 5, due to the deformation and reset of the elastic rubber block 62, the positioning block 63 is pushed by the positioning block 63. Part of the positioning block 63 automatically slides out from the circular groove 61 and is inserted into the storage tank 5. During the process of the positioning block 63 being inserted into the storage tank 5, due to the mutual contact between the positioning block 63 and the piston plate 72, the piston plate 72 can be pushed to be located in the storage tank 5 and slide down a corresponding distance, pushing part of the gas in the storage tank 5 into the rectangular cavity 71, thereby causing the pressure monitored by the pressure sensor 73 to change. The external control host can determine the distance the carrier plate 1 moves based on the pressure change monitored by the pressure sensor 73.

[0045] After the position of the loading plate 1 is adjusted, due to the mutual contact between the positioning block 63 and the inner wall of the storage tank 5, a constraint positioning state can be applied between the loading plate 1 and the base plate 2 at the four corners of the loading plate 1, so that the position between the loading plate 1 and the base plate 2 remains stable when the loading plate 1 is not subjected to large external forces.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A blind via positioning device for HDI circuit boards, comprising a carrier board (1); Its features are, Also includes: The bottom plate (2) has an installation groove (3) on its top side, and the bottom side of the carrying plate (1) is in contact with the inner bottom wall of the installation groove (3). The bottom plate (2) is provided with an adjustment mechanism (4) for adjusting the position of the carrying plate (1) in the installation groove (3). Several storage grooves (5) are provided at equal intervals on the inner bottom wall of the installation groove (3). The telescopic positioning mechanism (6) is located on the bottom side of the carrying plate (1), and the bottom plate (2) is provided with a pressure monitoring mechanism (7) for monitoring the pressure in the storage tank (5).

2. The HDI circuit board blind via positioning device of claim 1, wherein: The adjustment mechanism (4) includes a first threaded rod (41) and a second threaded rod (42), which are installed on the carrier plate (1) with cross-shaped threads. The first threaded rod (41) is located above the second threaded rod (42). Two motors (43) are provided on the outer side of the base plate (2), and the driving ends of the two motors (43) are fixedly connected to the first threaded rod (41) and the second threaded rod (42) respectively.

3. The HDI circuit board blind via positioning device of claim 2, wherein: The outer wall of the base plate (2) is provided with several rectangular holes (44) facing each other. A slider (45) in the shape of an I-beam is slidably installed in the rectangular holes (44). Both ends of the first threaded rod (41) and the two ends of the second threaded rod (42) are respectively rotated through the corresponding slider (45). The outer shell of the motor (43) is fixedly connected to the corresponding slider (45).

4. The HDI circuit board blind via positioning device of claim 3, wherein: The telescopic positioning mechanism (6) includes several positioning blocks (63). A circular groove (61) is provided at each of the four corners of the bottom side of the loading plate (1). An elastic rubber block (62) is slidably installed in the circular groove (61), and the top of the positioning block (63) is slidably installed in the corresponding circular groove (61).

5. The HDI circuit board blind via positioning device of claim 4, wherein: The positioning block (63) is ball-shaped, and the elastic rubber block (62) is arc-shaped on the side close to the corresponding positioning block (63) and contacts the outer wall of the corresponding positioning block (63).

6. The HDI circuit board blind via positioning device of claim 5, wherein: The pressure monitoring mechanism (7) includes a pressure sensor (73). A rectangular cavity (71) is provided at the bottom of the base plate (2), which is connected to the interior of the storage tank (5). Both the interior of the rectangular cavity (71) and the interior of the storage tank (5) are filled with gas. A piston plate (72) is slidably installed in the storage tank (5). The pressure sensor (73) is located at the center of the storage tank (5), and the bottom end of the pressure sensor (73) extends to the outside of the base plate (2) and is fixedly connected to the base plate (2).

Images