A PCB multi-layer circuit board drilling device

Abstract

The present invention relates to the technical field of circuit boards, and in particular to a PCB multi-layer circuit board drilling device, comprising a base body, a first axial transmission structure, a second axial transmission structure and a drilling rig, wherein the first axial transmission structure is installed in an upper slot of the base body, the second axial transmission structure is installed on the upper side of the base body, and the drilling rig is installed on the lower side of a Z-axis transmission portion of the second axial transmission structure. A loading portion is fixedly connected to the upper side of the plate body of the first axial transmission structure, and the loading portion comprises a box body, a group of three equally spaced board entrances are opened on the front side of the box body, and sockets are opened on both sides of the lower part of the board entrance. In the present invention, through the loading portion, clamping module, drilling rig and other structures, the PCB multi-layer circuit board drilling device can conveniently and quickly fix the position of an aluminum sheet cover plate, a multi-layer circuit board and a pad when drilling, so as to improve the processing and drilling efficiency of the multi-layer circuit board.

Description

Technical Field

[0001] The invention relates to the technical field of circuit boards, in particular to a PCB multi-layer circuit board drilling device. Background Art

[0002] Circuit boards can be divided into three categories according to the number of layers: single-sided boards, double-sided boards and multi-layer circuit boards. Multi-layer circuit boards refer to boards with more than three conductive graphic layers and insulating materials laminated in between. Multi-layer circuit boards are the product of the development of electronic information technology towards high speed, multi-function, large capacity, small size, thinness and light weight. During the production and processing of multi-layer circuit boards, holes need to be drilled to meet the requirements of use.

[0003] Before drilling a multi-layer circuit board, the existing drilling device needs to set an aluminum cover plate and a pad on the upper and lower sides of the circuit board, wherein the aluminum cover plate can improve the hole position accuracy, hole wall quality and drill bit life during processing, and reduce the needle breakage rate, prevent burrs and scratches on the surface of the PCB board, and play a cooling role, while the pad can protect the drill bit and the table, and in order to avoid misalignment of the circuit board, the aluminum cover plate and the pad during processing, the aluminum cover plate and the pad need to be fixed to the upper and lower sides of the circuit board by a pin machine before drilling can be performed. This processing method is inconvenient and requires subsequent board disassembly operations, which affects the processing efficiency of the PCB multi-layer circuit board. Therefore, based on the above problems, a PCB multi-layer circuit board drilling device is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a PCB multi-layer circuit board drilling device to solve the problem that when drilling holes, the existing PCB multi-layer circuit board drilling device needs to fix the aluminum cover plate and the pad plate on the upper and lower sides of the circuit board by a pin machine in advance before drilling can be performed. This processing method is relatively inconvenient and affects the processing efficiency of the PCB multi-layer circuit board.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A PCB multilayer circuit board drilling device comprises a seat body, a first axial transmission structure, a second axial transmission structure and a drilling machine, wherein the first axial transmission structure is installed in the upper slot of the seat body, the second axial transmission structure is installed on the upper side of the seat body, and the drilling machine is installed on the lower side of the Z-axis transmission part of the second axial transmission structure. A loading part is fixedly connected to the upper side of the plate body of the first axial transmission structure, and the loading part comprises a box body, a group of three equally spaced board entrances are opened on the front side of the box body, and sockets are opened on both sides of the lower part of the board entrance, and a guide plate frame is installed on the inner side of a group of the sockets, grooves are opened on the left and right sides of the box body, and rails are opened on the front and rear sides of the grooves, and openings are opened on the lower side of the board entrance on the front and rear sides of the box body, and a clamping module is installed on the inner side of the loading part, and the clamping module comprises a seat plate and a pressing frame on the inner side of the box body, and the left and right end faces of the seat plate and the pressing frame are symmetrically fixedly connected with rail blocks on the inner side of the rails, and the outer end faces of the upper and lower rail blocks are fixedly connected. The seat plate is fixedly connected with an expansion spring on the inner side of the track, and the left and right sides of the seat plate are fixedly connected with a lower clamping part on the inner side of the groove, and the lower clamping part includes a base strip, and a slot is provided on the inner side of the base strip, and a rib is fixedly connected to the inner side of the slot, and a group of multiple equidistant clamping holes are provided on the front and rear sides of the slot, and the left and right sides of the pressure frame are fixedly connected with an upper clamping part, and the upper clamping part includes a base block, and both sides of the lower part of the base block are fixedly connected with elastic strips, and the lower ends of the strips of the elastic strip are fixed A guide block is connected, and clamping blocks are fixedly connected to the front and rear sides of the elastic strip, a group of two through holes are opened on the inner side of the strips of the elastic strip, and a spring telescopic rod is fixedly connected to the outer side of the strips of the outer side of the elastic strip, and the end of the spring telescopic rod away from the elastic strip is fixedly connected to a shift bar, and the end surface of the shift bar close to the elastic strip is fixedly connected to connecting rods on the upper and lower sides, and an electric push rod whose upper end is fixedly connected to the lower end surface of the seat plate is fixedly connected to the inner side of the box body, and a control box is installed on the right side of the seat body.

[0007] Preferably, the first axial transmission structure, the second axial transmission structure, the electric push rod and the control box are electrically connected, the first axial transmission structure consists of a power box, a screw and a plate body, the screw and the plate body of the first axial transmission structure are spirally connected, and the second axial transmission structure consists of a gantry, a Y-axis transmission part and a Z-axis transmission part.

[0008] Preferably, the length of the inner wall of the box body is the same as the length dimension of the board entrance, the length dimension of the opening is the same as the length dimension of the board entrance, the guide plate frame is composed of a frame body and guide rods, the frame body of the guide plate frame is sleeved on the outside of the board entrance, the guide rods of the guide plate frame are all arranged on the lower side of the board entrance, and the guide rods of the guide plate frame are all arranged on the inner side of the box body.

[0009] Preferably, the upper clamping portion is arranged on the inner side of the groove, the upper clamping portion and the lower clamping portion are aligned up and down, the elastic strips are all arranged on the upper side of the slot, a group of the elastic strips are provided with a spacing, the guide blocks are all corner block structures, and the inclined surfaces of the guide blocks are all arranged toward the ribs.

[0010] Preferably, the clamping holes are arranged on the left and right sides of the rib, the clamping block and the clamping hole are arranged to be aligned vertically, the inclined surface of the clamping block is arranged downward, and the connecting rods are arranged to be horizontally aligned with the through holes.

[0011] The top end of the cylinder is provided with an air filter, and the bottom end of the cylinder is provided with an air filter, and the top end of the cylinder is provided with an air filter, and the top end of the cylinder is provided with an air filter, and the air filter is connected with the air filter by the air filter.

[0012] Preferably, the cylinder and the control box are electrically connected, the outlet port and the opening are aligned front and back, the roller is arranged on the upper side of the outlet port, a spacing is provided between the elastic sleeve and the entry hole, the transmission pipe is a folded pipe structure, and the lower end of the transmission pipe is inserted into the inner side of the waste bin.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In the present invention, by setting structures such as a loading part, a clamping module and a drilling rig, the loading part can be used to accommodate the aluminum cover plate, the multi-layer circuit board and the pad, and can also carry the clamping module. The aluminum cover plate, the multi-layer circuit board and the pad can be supported and fixed by the clamping module to avoid misalignment between the various plates during processing. Since the first axial transmission structure can drive the loading part to move in the X axis, and the second axial transmission structure can drive the drilling rig to move in the Y and Z axes, the drilling rig can process the multi-layer circuit board in the loading part, so that the PCB multi-layer circuit board drilling device can conveniently and quickly fix the position of the aluminum cover plate, the multi-layer circuit board and the pad when drilling, so as to improve the processing and drilling efficiency of the multi-layer circuit board, and solve the problem that the existing PCB multi-layer circuit board drilling device needs to fix the aluminum cover plate and the pad on the upper and lower sides of the circuit board by a pin machine in advance before drilling, and this processing method is relatively inconvenient and affects the processing efficiency of the PCB multi-layer circuit board;

[0015] 2. In the present invention, by setting up the cleaning module, waste box and pushing mechanism and other structures, the stacked plates will be between a group of openings after the clamping module is separated. At this time, the control box controls the cylinder to extend to move the push bar forward, push the stacked plates through the front opening into the sleeve shell, and then move out from the plate outlet. During the moving out process, the edge of the stacked plates will contact the elastic sleeve, so that the elastic sleeve drives the roller, the inlet hole and the shaft tube to rotate. At this time, the control box controls the vacuum pump to start, so that the vacuum pump exhausts air through the elastic hose, the rotary joint, the shaft tube, the roller and the inlet hole, so that the inlet hole can rotate and exhaust air on the surface of the stacked plates. The debris and dust in the holes are collected, and the collected debris and dust pass through the roller, the shaft tube, the rotary joint, the elastic hose, the vacuum pump and the transmission tube into the waste bin, so that the surface and the holes of the stacked boards removed from the board outlet are kept clean, and the PCB multi-layer circuit board drilling device can automatically collect and clean the debris and dust on the surface of the board and in the holes after drilling the multi-layer circuit board, which solves the problem that after the existing PCB multi-layer circuit board drilling device drills the multi-layer circuit board, debris and dust will remain on the surface of the board and in the holes, and subsequent manual cleaning is required, which causes inconvenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 For the present invention Figure 1 A schematic diagram of the structure from the rear;

[0018] Figure 3 It is a structural schematic diagram of the first axial transmission structure of the present invention;

[0019] Figure 4It is a schematic diagram of the structure of the loading part and the clamping module of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the loading part of the present invention;

[0021] Figure 6 For the present invention Figure 5 Schematic diagram of the split structure;

[0022] Figure 7 It is a structural schematic diagram of the material pushing mechanism of the present invention;

[0023] Figure 8 It is a structural schematic diagram of the clamping module of the present invention;

[0024] Fig. 9 It is a structural schematic diagram of the lower clamping part of the present invention;

[0025] Fig.10 It is a structural schematic diagram of the upper clamping part of the present invention;

[0026] Fig.11 It is a schematic structural diagram of the elastic strip of the present invention;

[0027] Fig.12 It is a schematic diagram of the interlocking structure between the upper clamping part and the lower clamping part of the present invention;

[0028] Fig.13 It is a structural schematic diagram of the cleaning module of the present invention;

[0029] Fig.14 It is a structural schematic diagram of the extraction part of the present invention;

[0030] Fig.15 For the present invention Fig.14 Schematic diagram of the cross-sectional structure.

[0031] In the figure: 1, seat body; 2, first axial transmission structure; 3, second axial transmission structure; 4, drilling machine; 5, loading part; 51, box body; 52, plate inlet; 53, plug hole; 54, guide plate frame; 55, groove; 56, track; 57, opening; 58, push mechanism; 581, fixed frame; 582, cylinder; 583, push bar; 6, clamping module; 61, seat plate; 62, pressure frame; 63, rail block; 64, expansion spring; 65, lower clamping part; 651, base bar; 652, slot; 653, rib; 654, Clamp hole; 66, upper clamping part; 661, base block; 662, elastic strip; 663, guide block; 664, clamping block; 665, perforation; 666, spring telescopic rod; 667, pull bar; 668, connecting rod; 67, electric push rod; 7, cleaning module; 71, vacuum pump; 72, elastic hose; 73, extraction part; 731, sleeve shell; 732, plate outlet; 733, shaft tube; 734, roller; 735, entry hole; 736, elastic sleeve; 737, rotary joint; 74, transmission pipe; 8, waste bin; 9, control box. DETAILED DESCRIPTION

[0032] See also Figure 1-15 , the present invention provides a technical solution:

[0033] A PCB multilayer circuit board drilling device comprises a base body 1, a first axial transmission structure 2, a second axial transmission structure 3 and a drilling machine 4, wherein the first axial transmission structure 2 is installed in an upper slot of the base body 1, the second axial transmission structure 3 is installed on the upper side of the base body 1, the drilling machine 4 is installed on the lower side of the Z-axis transmission part of the second axial transmission structure 3, a loading part 5 is fixedly connected to the upper side of the plate body of the first axial transmission structure 2, the loading part 5 comprises a box body 51, a group of three equally spaced board entrances 52 are opened on the front side of the box body 51, both sides of the lower part of the board entrances 52 are opened with sockets 53, a guide plate frame 54 is installed on the inner side of a group of sockets 53, grooves 55 are opened on the left and right sides of the box body 51, and tracks 56 are opened on the front and rear sides of the grooves 55, and the box body 51 is provided with a plurality of guide plates. The front and rear sides of the body 51 are both provided with openings 57 on the lower side of the entry port 52, and a clamping module 6 is installed on the inner side of the loading portion 5, and the clamping module 6 includes a seat plate 61 and a pressure frame 62 on the inner side of the box body 51, and the left and right end surfaces of the seat plate 61 and the pressure frame 62 are both symmetrically fixedly connected with a track block 63 on the inner side of the track 56, and the outer end surfaces of the upper and lower track blocks 63 are both fixedly connected with an expansion spring 64 on the inner side of the track 56, and the left and right sides of the seat plate 61 are both fixedly connected with a lower clamping portion 65 on the inner side of the groove 55, and the lower clamping portion 65 includes a base strip 651, and a slot 652 is provided on the inner side of the base strip 651, and a rib 653 is fixedly connected to the inner side of the slot 652, and a group of multiple equidistantly arranged ribs are provided on the front and rear sides of the slot 652 The clamping hole 654, the left and right sides of the pressing frame 62 are fixedly connected with an upper clamping part 66, the upper clamping part 66 includes a base block 661, the lower sides of the base block 661 are fixedly connected with elastic strips 662, the lower ends of the strips of the elastic strips 662 are fixedly connected with guide blocks 663, the front and rear sides of the elastic strips 662 are fixedly connected with clamping blocks 664, the inner side of the strips of the elastic strips 662 is provided with a group of two through holes 665, the outer side of the strips of the outer elastic strips 662 are fixedly connected with spring telescopic rods 666, the end of the spring telescopic rod 666 away from the elastic strips 662 is fixedly connected with a pull bar 667, the upper and lower sides of the end surface of the pull bar 667 close to the elastic strips 662 are fixedly connected with linkage rods 668, and the inner side of the box body 51 is fixedly connected with the seat The lower end surface of the plate 61 is fixedly connected to an electric push rod 67, and a control box 9 is installed on the right side of the seat body 1. The first axial transmission structure 2, the second axial transmission structure 3, the electric push rod 67 and the control box 9 are electrically connected. Through this setting, the control box 9 can control the first axial transmission structure 2, the second axial transmission structure 3, and the electric push rod 67. The first axial transmission structure 2 is composed of a power box, a screw and a plate body. The screw and the plate body of the first axial transmission structure 2 are spirally connected. The second axial transmission structure 3 is composed of a gantry, a Y-axis transmission part and a Z-axis transmission part. Through this setting, the first axial transmission structure 2 can drive the loading part 5 to perform X-axis displacement, and the second axial transmission structure 3 can drive the drilling rig 4 to perform Y and Z-axis displacement;The length of the inner wall of the box body 51 is the same as the length of the plate entry 52, and the length of the opening 57 is the same as the length of the plate entry 52. ​​Through this arrangement, a plate with the same length and width as the inner wall of the box body 51 can enter the box body 51 through the plate entry 52. ​​The guide plate frame 54 is composed of a frame and a guide rod. The frame of the guide plate frame 54 is sleeved on the outer side of the plate entry 52, and the guide rods of the guide plate frame 54 are all arranged on the lower side of the plate entry 52. ​​The guide rods of the guide plate frame 54 are all arranged on the inner side of the box body 51. Through this arrangement, the guide plate frame 54 can guide the plate so that the plate enters the box body 51 in a horizontal state; the upper clamping portion 66 is arranged on the inner side of the groove 55, and the upper clamping portion 66 and the lower clamping portion 65 are arranged to be aligned up and down, and the elastic strips 662 are all arranged on the upper side of the slot 652. Through this arrangement, the elastic strips 6 62 can be inserted into the slot 652, a group of elastic strips 662 are provided with a spacing, the guide blocks 663 are all angle block structures, the inclined surfaces of the guide blocks 663 are all arranged toward the ribs 653, through this arrangement, the elastic strip 662 is inserted into the slot 652 without interference from the ribs 653; the clamping holes 654 are all arranged on the left and right sides of the ribs 653, the clamping blocks 664 and the clamping holes 654 are arranged to be aligned up and down, and the inclined surfaces of the clamping blocks 664 are arranged downward, through this arrangement, as the elastic strip 662 goes deeper into the slot 652, the elastic strip 662 will be deformed again and again, so that the clamping blocks 664 are repeatedly inserted into the corresponding positions of the clamping holes 654, and the linkage rods 668 are all arranged to be aligned with the through holes 665 in the horizontal direction, through this arrangement, the linkage rods 668 can be inserted into the through holes 665, so that the linkage rods 668 can control the deformation of the elastic strip 662. ;

[0034] like Figure 2 , Figure 6 , Figure 7 , Figure 13-Figure 15As shown, a cleaning module 7 is installed at the seat body 1, and the cleaning module 7 includes an air pump 71 fixed on the upper side of the seat body 1, and the air inlet end of the air pump 71 is connected to an elastic hose 72, and the other end of the elastic hose 72 is installed with an extraction part 73 located in front of the front opening 57, and the extraction part 73 includes a sleeve 731 fixedly connected to the box body 51, and the front side of the sleeve 731 is provided with a plate outlet 732, and the left hole of the sleeve 731 is rotatably connected with a shaft tube 733, and the right end of the shaft tube 733 is connected to the The inner side of the housing 731 is provided with a roller 734, and a plurality of inlet holes 735 are provided at the curved surface of the roller 734 at equal angles. Both sides of the outer side of the roller 734 are provided with elastic sleeves 736. The left end of the shaft tube 733 is provided with a rotary joint 737 connected to the elastic hose 72. The air outlet end of the vacuum pump 71 is connected with a transmission pipe 74. A waste bin 8 is provided on the left side bearing plate of the seat body 1. A push mechanism 58 is provided on the rear side of the box body 51. The push mechanism 58 includes a The front end of the fixed frame 581 is provided with a cylinder 582, and the front end of the cylinder 582 is fixedly connected with a push bar 583 located inside the rear opening 57. Through this arrangement, the cleaning module 7 can automatically collect and clean the debris and dust on the surface of the plate and in the hole; the cylinder 582 is electrically connected to the control box 9, and through this arrangement, the control box 9 can control the cylinder 582, and the plate outlet 732 is aligned with the opening 57 in the front and rear, and through this arrangement, the plate can pass through The front opening 57 and the plate outlet 732 are moved out, and the roller 734 is arranged on the upper side of the plate outlet 732. Through this arrangement, the roller 734 cooperates with the inlet hole 735 to clean the upper side of the plate. A spacing is arranged between the elastic sleeve 736 and the inlet hole 735. Through this arrangement, the elastic sleeve 736 will not interfere with the air extraction of the inlet hole 735. The transmission pipe 74 is a folded pipe structure, and the lower end of the transmission pipe 74 is inserted into the inner side of the waste bin 8. Through this arrangement, the transmission pipe 74 can transport waste to the waste bin 8.

[0035] Working process: The drilling operation of the PCB multi-layer circuit board drilling device on the multi-layer circuit board is as follows. Note 1: The length and width of the aluminum cover plate, the multi-layer circuit board and the pad are the same, and the length and width of the multi-layer circuit board are the same as the length and width of the inner wall of the box body 51; Note 2: The electrical appliances in this case are all controlled by the control box 9, and the electrical appliances are all operated by an external power supply; first, the aluminum cover plate, the multi-layer circuit board and the pad are inserted into the three upper, middle and lower board entrances 52 in turn, so that the inserted panels are guided by the guide rods of the guide plate frame 54 and enter the inner side of the box body 51 in a horizontal state. After the panels are completely entered into the box body 51, the fixing frame 581 is taken out of the socket 53, so that the aluminum cover plate, the multi-layer circuit board and the pad are stacked on each other and fall on the upper side of the seat plate 61. At this time, the electric push rod 67 is started to extend, so that the seat plate 61 drives the lower clamping parts 65 on both sides to move upward, so that a group of elastic strips 662 of the upper clamping part 66 pass through The guide block 663 passes over the rib 653 and is inserted into the inner side of the slot 652. As the elastic strip 662 goes deeper into the slot 652, the elastic strip 662 will deform again and again to make the clamping block 664 clamped into the clamping hole 654 at the corresponding position again and again, so that the upper clamping part 66 and the lower clamping part 65 can be locked with each other, so that the pressing frame 62 and the seat plate 61 can clamp the aluminum cover plate, the multi-layer circuit board and the pad between them to avoid misalignment between the various plates during processing. Since the first axial transmission structure 2 can drive the loading part 5 to move in the X-axis, and the second axial transmission structure 3 can drive the drilling machine 4 to move in the Y and Z axes, the drilling machine 4 can drill the multi-layer circuit board in the loading part 5, so that the PCB multi-layer circuit board drilling device can conveniently and quickly fix the position of the aluminum cover plate, the multi-layer circuit board and the pad when drilling, so as to improve the processing and drilling efficiency of the multi-layer circuit board;When it is necessary to clean the stacked plates (the stacked plates refer to the aluminum cover plates, the multi-layer circuit boards and the pads), the clamping module 6 needs to be separated first. The operation is as follows: the electric push rod 67 is controlled to contract to make the seat plate 61, the upper clamping part 66, the lower clamping part 65, the pressing frame 62 and the stacked plates move downward, and the shifting bar 667 and the connecting rod 668 are pushed to move toward the through hole 665, so that the connecting rod 668 passes through the through hole 665. At this time, the shifting bar 667 is squeezed toward each other, which can simultaneously drive the elastic strip 662 to deform and contract, so that the clamping block 664 is separated from the clamping hole 654. At this time, the upper clamping part 66 and the lower clamping part 65 are changed into a separated state. At this time, the pressing frame 62 is moved upward by the elastic force of the expansion spring 64 to complete the separation of the clamping module 6. After the clamping module 6 is separated, the stacked plates will be between a group of openings 57. At this time, the cylinder 582 is controlled by the control box 9 to extend to make the push bar 583 move forward, so as to push the stacked plates through the front opening 57 to enter The stacked plates are inserted into the sleeve shell 731 and then moved out from the plate outlet 732. During the moving process, the edge of the stacked plates will contact the elastic sleeve 736, so that the elastic sleeve 736 drives the roller 734, the inlet hole 735 and the shaft tube 733 to rotate. At this time, the control box 9 controls the air pump 71 to start, so that the air pump 71 is used to extract air through the elastic hose 72, the rotary joint 737, the shaft tube 733, the roller 734 and the inlet hole 735, so that the inlet hole 735 can rotate and pump air to the stacked plates. The debris and dust on the surface of the stacked plates and in the holes are collected, and the collected debris and dust pass through the roller 734, the shaft tube 733, the rotary joint 737, the elastic hose 72, the vacuum pump 71 and the transmission tube 74 into the waste bin 8, so that the surface and the holes of the stacked plates removed from the plate outlet 732 are kept clean, so that the PCB multi-layer circuit board drilling device can automatically collect and clean the debris and dust on the surface of the plate and in the holes after drilling the multi-layer circuit board. ;

[0036] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A PCB multilayer circuit board drilling device, comprising a base (1), a first axial transmission structure (2), a second axial transmission structure (3) and a drilling machine (4), characterized in that: The first axial transmission structure (2) is installed in an upper slot of the seat body (1), the second axial transmission structure (3) is installed on the upper side of the seat body (1), the drilling machine (4) is installed on the lower side of the Z-axis transmission part of the second axial transmission structure (3), the upper side of the plate body of the first axial transmission structure (2) is fixedly connected with a loading part (5), the loading part (5) comprises a box body (51), a group of three plate entry openings (52) arranged at equal intervals are provided on the front side of the box body (51), both sides of the lower part of the plate entry opening (52) are provided with plug holes (53), a group of guide plate frames (54) are installed on the inner side of the plug holes (53), and the left and right sides of the box body (51) are provided with grooves (53). 5), tracks (56) are provided on both the front and rear sides of the groove (55), openings (57) are provided on the front and rear sides of the box body (51) and are located below the board entry (52), a clamping module (6) is installed on the inner side of the loading portion (5), the clamping module (6) comprises a seat plate (61) and a pressing frame (62) located on the inner side of the box body (51), the left and right end surfaces of the seat plate (61) and the pressing frame (62) are symmetrically fixedly connected with a track block (63) located on the inner side of the track (56), the outer end surfaces of the upper and lower track blocks (63) are fixedly connected with an expansion spring (64) located on the inner side of the track (56), the left and right sides of the seat plate (61) are fixedly connected with a A lower clamping portion (65) is provided on the inner side of the groove (55), the lower clamping portion (65) comprising a base strip (651), a slot (652) is provided on the inner side of the base strip (651), a rib (653) is fixedly connected to the inner side of the slot (652), a group of multiple clamping holes (654) arranged at equal intervals are provided on the front and rear sides of the slot (652), an upper clamping portion (66) is fixedly connected to the left and right sides of the pressing frame (62), the upper clamping portion (66) comprises a base block (661), both sides of the lower part of the base block (661) are fixedly connected to elastic strips (662), the lower ends of the strips of the elastic strip (662) are fixedly connected to guide blocks (663), the elastic strip (661) The front and rear sides of the elastic strip (62) are fixedly connected with a clamping block (664), the inner side of the strip of the elastic strip (662) is provided with a group of two through holes (665), the outer side of the strip of the elastic strip (662) is fixedly connected with a spring telescopic rod (666), the end of the spring telescopic rod (666) away from the elastic strip (662) is fixedly connected with a shifting bar (667), the upper and lower sides of the end surface of the shifting bar (667) close to the elastic strip (662) are fixedly connected with a connecting rod (668), the inner side of the box body (51) is fixedly connected with an electric push rod (67) whose upper end is fixedly connected to the lower end surface of the seat plate (61), and a control box (9) is installed on the right side of the seat body (1).

2. A PCB multi-layer circuit board drilling device according to claim 1, characterized in that: The first axial transmission structure (2), the second axial transmission structure (3), the electric push rod (67) and the control box (9) are electrically connected, the first axial transmission structure (2) is composed of a power box, a screw and a plate body, the screw and the plate body of the first axial transmission structure (2) are spirally connected, and the second axial transmission structure (3) is composed of a gantry, a Y-axis transmission part and a Z-axis transmission part.

3. A PCB multi-layer circuit board drilling device according to claim 1, characterized in that: The length of the inner wall of the box body (51) is the same as the length of the plate entry opening (52); the length of the opening (57) is the same as the length of the plate entry opening (52); the guide plate frame (54) is composed of a frame body and guide rods; the frame body of the guide plate frame (54) is sleeved on the outside of the plate entry opening (52); the guide rods of the guide plate frame (54) are all arranged on the lower side of the plate entry opening (52); and the guide rods of the guide plate frame (54) are all arranged on the inner side of the box body (51).

4. A PCB multi-layer circuit board drilling device according to claim 1, characterized in that: The upper clamping portion (66) is arranged on the inner side of the groove (55), the upper clamping portion (66) and the lower clamping portion (65) are arranged to be aligned with each other in the upper and lower directions, the elastic strips (662) are arranged on the upper side of the slot (652), a spacing is arranged between a group of the elastic strips (662), the guide blocks (663) are all corner block structures, and the inclined surfaces of the guide blocks (663) are arranged to face the ribs (653).

5. A PCB multi-layer circuit board drilling device according to claim 1, characterized in that: The clamping holes (654) are arranged on the left and right sides of the rib (653); the clamping blocks (664) are arranged to be vertically aligned with the clamping holes (654); the inclined surface of the clamping blocks (664) is arranged to face downward; and the linkage rods (668) are arranged to be horizontally aligned with the through holes (665).

6. A PCB multi-layer circuit board drilling device according to claim 1, characterized in that: A cleaning module (7) is installed on the base body (1), and the cleaning module (7) comprises an air pump (71) fixed on the upper side of the base body (1); an air inlet end of the air pump (71) is connected to an elastic hose (72); the other end of the elastic hose (72) is installed with an extraction portion (73) located in front of the front opening (57); the extraction portion (73) comprises a sleeve (731) fixedly connected to the box body (51); a plate outlet (732) is provided on the front side of the sleeve (731); a shaft tube (733) is rotatably connected in a hole on the left side of the sleeve (731); the right end of the shaft tube (733) is connected to a roller (734) located on the inner side of the sleeve (731); and a plurality of holes are provided on the curved surface of the roller (734). The housing (51) has two inlet holes (735) arranged at equal angles, the outer sides of the roller (734) are both sleeved with elastic sleeves (736), the left end of the shaft tube (733) is equipped with a rotary joint (737) connected to the elastic hose (72), the air outlet end of the vacuum pump (71) is connected to the transmission pipe (74), a waste bin (8) is arranged on the left bearing plate of the seat body (1), and a pushing mechanism (58) is installed on the rear side of the box body (51), the pushing mechanism (58) comprises a fixed frame (581) fixed to the rear side of the box body (51), a cylinder (582) is installed on the front end surface of the fixed frame (581), and the front end of the cylinder (582) is fixedly connected to a pushing strip (583) located on the inner side of the rear opening (57).

7. A PCB multi-layer circuit board drilling device according to claim 6, characterized in that: The cylinder (582) and the control box (9) are electrically connected, the plate outlet (732) and the opening (57) are aligned front and back, the roller (734) is arranged on the upper side of the plate outlet (732), a distance is provided between the elastic sleeve (736) and the inlet hole (735), the transmission pipe (74) is a folded pipe structure, and the lower end of the transmission pipe (74) is inserted into the inner side of the waste bin (8).

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