Printed circuit board and assembling device thereof

Abstract

The invention provides a printed circuit board and an assembling device thereof, and relates to the technical field of printed circuit boards and manufacturing equipment thereof. The technical problem that an existing printed circuit board cannot adapt to a cylindrical installation space is solved. According to the technical scheme, the printed circuit board comprises a hollow column and a column core filled in the center of the hollow column; the hollow column comprises a composite belt surrounding a column core; the composite tape comprises a circuit wafer and an insulating tape overlapped with the circuit wafer. The circuit wafer comprises an insulating film and a circuit arranged on the surface of the insulating film; the insulating tape is made of glass fiber cloth or non-woven fabric and is impregnated by a resin adhesive; the length of the insulating tape in the surrounding direction is greater than the length of the circuit wafer, so that the inner circumferential surface and the outer circumferential surface of the hollow column are both covered by the insulating tape. According to the printed circuit board, the cylindrical installation space can be fully utilized, and the electronic equipment can be further miniaturized in size and complicated in function. In addition, the invention further provides an assembling device of the printed circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of printed circuit boards and manufacturing equipment thereof, and in particular to printed circuit boards and assembly devices thereof. Background Art

[0002] Printed circuit boards are one of the important components of the electronics industry. Almost every electronic device, from electronic watches and calculators to computers, communication electronic equipment, and military weapon systems, as long as there are electronic components such as integrated circuits, must use printed circuit boards to make electrical connections between the various components.

[0003] With the rapid development and widespread application of integrated circuits, the size of electronic devices is getting smaller and smaller, and printed circuit boards also need to be constantly updated. There are many electronic devices whose internal space is often cylindrical or nearly cylindrical. However, the existing printed circuit boards are all flat structures, which cannot fully utilize the internal space of such electronic devices. This hinders the further improvement of the integration and density of the internal circuits of electronic devices, and is not conducive to the further miniaturization and complex functions of electronic devices. Summary of the invention

[0004] An object of the present invention is to provide a printed circuit board that can fully utilize the cylindrical installation space, which is conducive to further miniaturization and functional complexity of electronic equipment; based on the same inventive concept, another object of the present invention is to provide an assembly device for the aforementioned printed circuit board.

[0005] A printed circuit board comprises: a column; the column comprises: a hollow column and a column core filled in the center of the hollow column; the hollow column comprises: a composite tape surrounding the column core; the composite tape comprises: a circuit sheet and an insulating tape overlapped with the circuit sheet; the circuit sheet comprises: an insulating film and a circuit arranged on the surface of the insulating film; the insulating tape is made of glass fiber cloth or non-woven fabric and impregnated with a resin adhesive; the length of the insulating tape in the surrounding direction is greater than the length of the circuit sheet, so that the inner circumference and the outer circumference of the hollow column are both covered by the insulating tape.

[0006] Optionally, the insulating film is made of polyester film, polyimide film or fluorinated ethylene propylene film; and the resin adhesive is made of epoxy resin, polyimide resin, polycyanate resin or polyolefin resin.

[0007] Optionally, it also includes: a cylinder for accommodating the column; the end surfaces of the column and the cylinder are covered with resin adhesive to seal the column in the cylinder; the circuit chip is provided with a connecting portion, and the connecting portion extends beyond the end surfaces of the column and the cylinder.

[0008] The present application also provides an assembly device for a printed circuit board, which is used to assemble the aforementioned printed circuit board; the assembly device includes: a conveying mechanism for conveying an insulating tape from left to right, a stacking table located on the right side of the conveying mechanism, a suction and release mechanism for conveying a circuit sheet to the stacking table, a cutting mechanism located on the right side of the stacking table, a winding mechanism located on the right side of the cutting mechanism, a core delivery mechanism for delivering a column core to the winding mechanism, a column taking mechanism for taking away the column from the winding mechanism, a first material channel for supplying a cylinder, a pushing mechanism for driving the column into the cylinder, a glue spreading mechanism for evenly covering the column and the end surface of the cylinder with resin adhesive, and a material taking mechanism for taking away the cylinder.

[0009] Optionally, the winding mechanism includes: a clamping unit for clamping the front and rear ends of the column core, and a driven unit cooperating with the clamping unit; the clamping unit includes: a coaxial active clamping shaft and a driven clamping shaft, a first motor that drives the active clamping shaft to rotate, and a first driving unit that drives the first motor to move forward and backward; the driven clamping shaft is rotatably mounted on the second slide seat through a bearing, and is adapted to drive the second slide seat to move forward and backward; the driven unit includes: a first driven roller, a roller frame located at both ends of the first driven roller; the end of the first driven roller is rotatably mounted on the slider through a bearing; the roller frame includes: a horizontal part, a vertical part extending upward from the left and right ends of the horizontal part; the two vertical parts are provided with sliding grooves on opposite sides to jointly limit the slider; the roller frame is provided with a third spring that drives the slider to move upward, and a stopper that limits the slider is installed on the top of the roller frame.

[0010] Optionally, the cross portion has a guide hole passing through the upper and lower parts, the bottom of the sliding block has a third guide rod cooperating with the guide hole, and the third spring is sleeved on the third guide rod; the first motor is installed on the first sliding seat; the first driving unit includes: a first guide rail cooperating with the first sliding seat, a first electromagnet driving the first sliding seat to approach the driven clamping shaft, and a first spring driving the first sliding seat away from the driven clamping shaft; the second driving unit includes: a second guide rail cooperating with the second sliding seat, a second electromagnet driving the second sliding seat to approach the active clamping shaft, and a second spring driving the second sliding seat away from the active clamping shaft; the first guide rail and the second guide rail extend in the front-to-back direction.

[0011] Optionally, the column-removing mechanism includes: a bracket, a left arc plate and a right arc plate installed on the bracket, and a first power source driving the bracket to move left and right; a accommodating cavity for accommodating the column is formed between the left arc plate and the right arc plate; the left arc plate is provided with a plurality of first connecting tubes extending radially outward along the accommodating cavity, and the bracket is provided with a first mounting hole for the first connecting tube to pass through; the first connecting tube is provided with an external thread, and is connected to the bracket through a first nut; the right arc plate is provided with a plurality of second connecting tubes extending radially outward along the accommodating cavity, and the bracket is provided with a second mounting hole for the second connecting tube to pass through; the second connecting tube is provided with an external thread, and is connected to the bracket through a second nut; a first notch is provided between the lower part of the left arc plate and the lower part of the right arc plate, so that the insulating tape and the circuit sheet can be sent from the stacking table to the winding mechanism and avoid the first driven roller of the winding mechanism.

[0012] Optionally, the column-taking mechanism further includes: a left guide and a right guide; when the left guide and the right guide are closed, they cooperate with the column core to form a guide gap for guiding the insulating tape and the circuit sheet to wrap around the column core; when the left guide and the right guide are closed, there is a second notch for the insulating tape and the circuit sheet to enter the guide gap; the left guide is provided with a plurality of first guide rods extending radially outward along the column core, each first guide rod is respectively limited in each first connecting tube; the left guide is adapted to drive the first cylinder to move radially along the accommodating cavity, and the first cylinder is installed The bracket is provided with a hole for the piston rod of the first cylinder to pass through the left arc plate and the bracket; the left arc plate is provided with a first receiving groove for accommodating the left guide member; the right guide member is provided with a plurality of second guide rods extending radially outward along the column core, and each second guide rod is respectively limited in each second connecting tube; the right guide member is adapted to drive the second cylinder to move radially along the accommodating cavity, and the second cylinder is installed on the bracket, and the right arc plate and the bracket are provided with a hole for the piston rod of the second cylinder to pass through; the right arc plate is provided with a second receiving groove for accommodating the right guide member.

[0013] Optionally, the first material channel includes: a material storage section extending in the up-down direction, a material discharge section extending in the horizontal direction, and an arc section connecting the bottom end of the material storage section and the material discharge section; the material pushing mechanism corresponds to the front and rear of the material discharge section; the material pushing mechanism includes: a material pushing piece and a second power source driving the material pushing piece to move forward and backward; the glue-distributing mechanism includes: a glue-distributing unit located on the front and rear sides of the material discharge section; the glue-distributing unit located between the material discharge section and the material pushing mechanism is adapted to a third power source driving it to move up and down; the front and rear ends of the material discharge section are open to expose the end face of the cylinder; the glue-distributing unit includes: a glue-distributing disk, a driving A third motor for rotating the glue distributing disk back and forth, and a third driving unit for driving the third motor to move forward and backward; the glue distributing disk is provided with a glue retaining ring on the side facing the discharging section, and the inner diameter of the glue retaining ring is matched with the outer diameter of the cylinder; the glue distributing disk is provided with an arc-shaped opening running through the front and rear surfaces for the connecting part of the circuit sheet to pass through; the length of the arc-shaped opening in the arc direction is greater than the length of the connecting part; the material taking mechanism comprises: a first pneumatic finger, a fourth cylinder for driving the first pneumatic finger to move up and down, and a fourth power source for driving the fourth cylinder to move forward and backward; the top of the discharging section is open for the material taking mechanism to take away the cylinder.

[0014] Optionally, the conveying mechanism includes: an active roller, a second driven roller cooperating with the active roller, and a second motor driving the active roller to rotate; the suction and release mechanism includes: a plurality of vacuum nozzles for sucking and placing circuit chips, a slide for installing the vacuum nozzles, a third cylinder for driving the slide to move up and down, and a fifth power source for driving the third cylinder to move forward and backward; the cutting mechanism includes: a cutter located below the right end of the stacking table, and a sixth power source for driving the cutter to move up and down; a limit strip is provided above the right end of the stacking table to limit the insulating tape when the cutter cuts the insulating tape; the core feeding mechanism includes: a second pneumatic finger, a fifth cylinder for driving the second pneumatic finger to move up and down, and a seventh power source for driving the fifth cylinder to move forward and backward; a second material channel for supplying column cores is provided at the rear of the winding mechanism; the top of the discharge end of the second material channel is open for the core feeding mechanism to take away the column core.

[0015] The beneficial effects of the present invention are mainly embodied in: The circuit is arranged on the surface of the insulating film to form a flexible circuit sheet; the surface of the circuit sheet is covered with resin adhesive and then wound around the column core; after the resin adhesive is cured, a columnar printed circuit board can be obtained. This columnar printed circuit board can better fit the cylindrical or nearly cylindrical installation space, which is conducive to further miniaturization and complex functions of electronic equipment.

[0016] The insulating tape is made of glass fiber cloth or non-woven fabric, which can be better impregnated with the resin adhesive; the insulating tape is first impregnated with the resin adhesive, and then overlapped with the circuit chip and wound on the column core; during the winding process, it can be ensured that the resin adhesive is evenly covered on both sides of the circuit chip and the air is squeezed out; in this way, the solidified resin adhesive can fully fill the gap between the rings formed by the circuit chip during the winding process, thereby fully protecting the circuit chip, especially preventing the circuit on the surface of the circuit chip from oxidation or corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is a schematic diagram of the structure of a printed circuit board; Figure 2 It is a schematic diagram of the assembly of a printed circuit board; Figure 3 A schematic diagram of the structure of a printed circuit board assembly device; Figure 4 It is a structural schematic diagram of a winding mechanism and a core feeding mechanism; Figure 5 is a structural schematic diagram of a first driving unit; Figure 6 is a schematic structural diagram of a second driving unit; Figure 7 is a schematic diagram of the structure of the driven unit; Figure 8 It is a structural schematic diagram of the column taking mechanism; Fig. 9 It is a schematic diagram of the assembly of the bracket, the left arc plate and the right arc plate; Fig.10 It is a schematic diagram of the left guide member and the right guide member cooperating with the column core to form a guide gap; Fig.11 is a schematic diagram of the left guide member retreating into the first receiving groove; Fig.12 It is a structural diagram of the material pushing mechanism and the material taking mechanism; Fig.13 It is a structural schematic diagram of the glue-distributing mechanism; Fig.14 It is a structural schematic diagram of the glue-distributing disk; Fig.15 It is a schematic diagram of the structures of the conveying mechanism, the suction and release mechanism, and the cutting mechanism.

[0019] Figure numerals: 1, hollow column; 2, column core; 3, circuit chip; 4, insulating tape; 5, cylinder; 6, connecting part; 7, conveying mechanism; 8, stacking table; 9, suction and release mechanism; 10, cutting mechanism; 11, winding mechanism; 12, core feeding mechanism; 13, column taking mechanism; 14, first material channel; 15, material pushing mechanism; 16, glue distribution mechanism; 17, material taking mechanism; 18, active tightening shaft; 19, driven tightening shaft; 20, first motor; 21, first driving unit ; 22, second slide; 23, second drive unit; 24, first driven roller; 25, roller frame; 26, slider; 27, third spring; 28, third guide rod; 29, first slide; 30, first guide rail; 31, first electromagnet; 32, first spring; 33, second guide rail; 34, second electromagnet; 35, second spring; 36, bracket; 37, left arc plate; 38, right arc plate; 39, first power source; 40, first connecting tube; 41, first Mounting hole; 42, second connecting tube; 43, second mounting hole; 44, left guide; 45, right guide; 46, first guide rod; 47, first cylinder; 48, first receiving groove; 49, second guide rod; 50, second cylinder; 51, second receiving groove; 52, pusher; 53, second power source; 54, glue distribution unit; 55, third power source; 56, discharging section; 57, glue distribution plate; 58, third motor; 59, third drive unit; 60, Rubber retaining ring; 61. arc-shaped mouth; 62. first pneumatic finger; 63. fourth power source; 64. active roller; 65. second driven roller; 66. second motor; 67. vacuum nozzle; 68. slide; 69. third cylinder; 70. fifth power source; 71. cutter; 72. sixth power source; 73. limit strip; 74. second pneumatic finger; 75. fourth cylinder; 76. seventh power source; 77. second material channel; 78. fifth cylinder; 79. guide gap. DETAILED DESCRIPTION

[0020] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0021] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The following is combined with Figure 1 ~Attached Figure 4 Embodiments of the present invention are described in detail.

[0025] Example 1

[0026] like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a printed circuit board. The printed circuit board includes: a column. The column includes: a hollow column 1, and a column core 2 filled in the center of the hollow column 1. The hollow column 1 includes: a composite tape surrounding the column core 2. The composite tape includes: a circuit sheet 3, and an insulating tape 4 overlapped with the circuit sheet 3. The circuit sheet 3 includes: an insulating film, and a circuit arranged on the surface of the insulating film. The insulating tape 4 is made of glass fiber cloth or non-woven fabric, and is impregnated with a resin adhesive. The length of the insulating tape 4 in the circumferential direction is greater than the length of the circuit sheet 3, so that the inner circumference and the outer circumference of the hollow column 1 are covered by the insulating tape 4.

[0027] It should be understood that the present invention arranges a circuit on the surface of the insulating film to form a flexible circuit sheet 3; and covers the surface of the circuit sheet 3 with a resin adhesive, and then winds it on the column core 2; after the resin adhesive is cured, a printed circuit board with a column structure can be obtained. This printed circuit board with a column structure can better adapt to cylindrical or cylindrical installation spaces, which is conducive to further miniaturization and functional complexity of electronic equipment. In addition, the insulating tape 4 is made of glass fiber cloth or non-woven fabric, which can be better impregnated with the resin adhesive; the insulating tape 4 is first impregnated with the resin adhesive, and then overlapped with the circuit sheet 3 and wound on the column core 2; during the winding process, it can be ensured that the resin adhesive is evenly covered on both sides of the circuit sheet 3, and the air is squeezed out; in this way, the cured resin adhesive can fully fill the gap between the rings formed by the circuit sheet 3 during the winding process, thereby fully protecting the circuit sheet 3, especially preventing the circuit on the surface of the circuit sheet 3 from oxidation or corrosion. In addition, the column core 2 is usually made of polymer insulating materials such as plastics. The circuit sheet 3 may be provided with a circuit on one side of the insulating film; or may be provided with a circuit on both sides of the insulating film to increase the circuit density and integration.

[0028] Example 2

[0029] Based on Example 1, the insulating film is made of polyester film, polyimide film or fluorinated ethylene propylene film; and the resin adhesive is made of epoxy resin, polyimide resin, polycyanate resin or polyolefin resin.

[0030] Example 3

[0031] like Figure 1 , Figure 2 As shown, based on Example 1 or Example 2, the printed circuit board also includes: a cylinder 5 for accommodating the column; the end surfaces of the column and the cylinder 5 are covered with a resin adhesive to seal the column in the cylinder 5; the circuit sheet 3 is provided with a connecting portion 6, and the connecting portion 6 extends beyond the end surfaces of the column and the cylinder 5.

[0032] It should be understood that the cylinder 5 is usually made of polymer insulating materials such as plastic. When the column core 2 is wound with the circuit sheet 3 and the insulating tape 4, the resin adhesive impregnated in the insulating tape 4 is in a fluid or semi-fluid state; after being wound into a cylinder, the cylinder can be inserted into the cylinder 5 and wait for the resin adhesive to solidify to prevent the cylinder from loosening and deforming during the curing process of the resin adhesive. According to the needs of the actual situation; a release agent or a release film can be set on the inner wall of the cylinder 5 so that the cylinder can be taken out of the cylinder 5 after the resin adhesive is solidified; or a release agent or a release film can be not set on the inner wall of the cylinder 5 so that the cylinder and the cylinder 5 can be connected together after the resin adhesive is solidified. In this case, a layer of resin adhesive is usually covered on the end faces of the cylinder and the cylinder 5, so that the cylinder is completely enclosed in the cylinder 5.

[0033] Example 4

[0034] like Figure 3 As shown, an embodiment of the present invention provides an assembly device for a printed circuit board, which is used to assemble the printed circuit board described in Example 3. The assembly device includes: a conveying mechanism 7 for conveying an insulating tape 4 from left to right, a stacking platform 8 located on the right side of the conveying mechanism 7, a suction and release mechanism 9 for conveying a circuit sheet 3 to the stacking platform 8, a cutting mechanism 10 located on the right side of the stacking platform 8, a winding mechanism 11 located on the right side of the cutting mechanism 10, a core feeding mechanism 12 for conveying a column core 2 to the winding mechanism 11, a column taking mechanism 13 for taking away the column from the winding mechanism 11, a first material channel 14 for supplying a cylinder 5, a material pushing mechanism 15 for driving the column into the cylinder 5, a glue spreading mechanism 16 for evenly covering the end surface of the cylinder and the cylinder 5 with resin adhesive, and a material taking mechanism 17 for taking away the cylinder 5.

[0035] It should be understood that the insulating tape 4 can be impregnated with resin adhesive upstream and sent to the stacking station 8 downstream through the conveying mechanism 7. The circuit sheet 3 can be sucked from the placement area of ​​the circuit sheet 3 by the suction and release mechanism 9, and then placed on the stacking station 8, so that the circuit sheet 3 and the insulating tape 4 are stacked together; the core feeding mechanism 12 is made to send the column core 2 to the winding mechanism 11; and the conveying mechanism 7 continues to send the insulating tape 4 downstream, and the insulating tape 4 will move the circuit sheet 3 to the winding mechanism 11; in this way, the winding mechanism 11 can be made to wind the insulating tape 4 and the circuit sheet 3 on the column core 2; during the winding process, a small amount of the resin adhesive impregnated in the insulating tape 4 will be squeezed onto the end face of the column. Next, the cutting mechanism 10 can be ordered to cut the insulating tape 4, and then the column taking mechanism 13 can be ordered to take the wound column from the winding mechanism 11; then the pushing mechanism 15 can be ordered to push the column from the column taking mechanism 13 into the cylinder 5 of the first material channel 14; then the glue-spreading mechanism 16 can be ordered to smooth the resin adhesive squeezed onto the end surface of the column, so that the resin adhesive evenly covers the end surface of the column and the cylinder 5. Finally, the taking mechanism 17 can be ordered to take away the cylinder 5 with the column; after the resin adhesive is cured, a printed circuit board with a column structure can be obtained. In addition, before placing the circuit chip 3 in the placement area, a layer of plastic film can be wrapped on the surface of the connecting portion 6 of the circuit chip 3 to prevent the connecting portion 6 from being contaminated during the subsequent assembly process.

[0036] Example 5

[0037] like Figure 3 to Figure 7As shown, on the basis of Example 4, the winding mechanism 11 includes: a clamping unit for clamping the front and rear ends of the column core 2, and a driven unit cooperating with the clamping unit; the clamping unit includes: a coaxial active clamping shaft 18 and a driven clamping shaft 19, a first motor 20 for driving the active clamping shaft 18 to rotate, and a first driving unit 21 for driving the first motor 20 to move forward and backward; the driven clamping shaft 19 is rotatably mounted on the second slide 22 through a bearing, and is adapted to drive the second slide 22 to move forward and backward. The driven unit 23 comprises: a first driven roller 24, and roller frames 25 located at both ends of the first driven roller 24; the ends of the first driven roller 24 are rotatably mounted on the slider 26 through bearings; the roller frame 25 comprises: a horizontal portion, and vertical portions extending upward from the left and right ends of the horizontal portion; the two vertical portions are provided with sliding grooves on opposite sides to jointly limit the slider 26; the roller frame 25 is provided with a third spring 27 for driving the slider 26 to move upward, and a stopper for limiting the slider 26 is installed on the top of the roller frame 25.

[0038] It should be understood that prismatic grooves can be provided at the front and rear ends of the column core 2, and matching prismatic protrusions can be provided on the active tightening shaft 18 and the driven tightening shaft 19, so that the active tightening shaft 18 and the driven tightening shaft 19 can better tighten the column core 2. The first driving unit 21 drives the first motor 20 to take the active tightening shaft 18 away from the driven tightening shaft 19, and the second driving unit 23 drives the second slide 22 to take the driven tightening shaft 19 away from the active tightening shaft 18; the core delivery mechanism 12 can deliver the column core 2 between the active tightening shaft 18 and the driven tightening shaft 19. Then, the active tightening shaft 18 and the driven tightening shaft 19 are brought closer to each other, so that the column core 2 can be tightened. A release agent or release film may be provided on the surface of the first driven roller 24; the insulating tape 4 and the circuit chip 3 sent from the laminating table 8 will be pressed on the surface of the column core 2 by the first driven roller 24, so that the first motor 20 drives the active pressing shaft 18 to rotate the column core 2, and the insulating tape 4 and the circuit chip 3 can be wound on the column core 2. During the winding process, the diameter of the column will become larger and larger; the two ends of the first driven roller 24 are installed on the slider 26, and the bottom of the slider 26 is supported by the third spring 27; in this way, the height of the first driven roller 24 will automatically and adaptively move downward as the diameter of the column increases, so as to keep pressing the insulating tape 4 and the circuit chip 3 without hindering the rotation of the column. The first motor 20 is usually a servo motor.

[0039] Example 6

[0040] like Figures 4 to 7As shown, on the basis of Example 5, the transverse portion has a guide hole that passes through the upper and lower parts, the bottom of the slider 26 has a third guide rod 28 that cooperates with the guide hole, and the third spring 27 is sleeved on the third guide rod 28; the first motor 20 is installed on the first slide 29; the first driving unit 21 includes: a first guide rail 30 that cooperates with the first slide 29, a first electromagnet 31 that drives the first slide 29 to approach the driven clamping shaft 19, and a first spring 32 that drives the first slide 29 away from the driven clamping shaft 19; the second driving unit 23 includes: a second guide rail 33 that cooperates with the second slide 22, a second electromagnet 34 that drives the second slide 22 to approach the active clamping shaft 18, and a second spring 35 that drives the second slide 22 away from the active clamping shaft 18; the first guide rail 30 and the second guide rail 33 extend in the front-to-back direction.

[0041] It should be understood that when the first electromagnet 31 is powered off, the first spring 32 will restore its deformation and drive the first slide 29 to move away from the driven abutting shaft 19; the first slide 29 contains iron or iron alloy, and the first electromagnet 31 is powered on to attract the first slide 29 to move toward the driven abutting shaft 19. Similarly, when the second electromagnet 34 is powered off, the second spring 35 will restore its deformation and drive the second slide 22 to move away from the active abutting shaft 18; the second slide 22 contains iron or iron alloy, and the second electromagnet 34 is powered on to attract the second slide 22 to move toward the active abutting shaft 18. The active abutting shaft 18 and the driven abutting shaft 19 only need to move slightly in the axial direction. Compared with linear cylinders and linear motors, the first drive unit 21 and the second drive unit 23 of the aforementioned structure are simpler and more compact in structure, lower in cost, and more convenient to maintain.

[0042] Example 7

[0043] like Figure 3 , Figure 8 , Fig. 9 , Fig.11As shown, on the basis of Example 5 or Example 6, the column-taking mechanism 13 includes: a bracket 36, a left arc plate 37 and a right arc plate 38 installed on the bracket 36, and a first power source 39 that drives the bracket 36 to move left and right; a receiving cavity for receiving the column is formed between the left arc plate 37 and the right arc plate 38; the left arc plate 37 is provided with a plurality of first connecting tubes 40 extending radially outward along the receiving cavity, and the bracket 36 is provided with a first mounting hole 41 for the first connecting tube 40 to pass through; the first connecting tube 40 is provided with an external thread and is passed through The right arc plate 38 is connected to the bracket 36 through a first nut; the right arc plate 38 is provided with a plurality of second connecting tubes 42 extending radially outward along the accommodating cavity, and the bracket 36 is provided with a second mounting hole 43 for the second connecting tube 42 to pass through; the second connecting tube 42 is provided with an external thread, and is connected to the bracket 36 through a second nut; a first notch is provided between the lower part of the left arc plate 37 and the lower part of the right arc plate 38, so that the insulating tape 4 and the circuit sheet 3 can be sent from the laminating table 8 to the winding mechanism 11, and avoid the first driven roller 24 of the winding mechanism 11.

[0044] It should be understood that after the active tightening shaft 18 and the driven tightening shaft 19 tighten against the column core 2, the core feeding mechanism 12 is firstly left, and then the first power source 39 drives the bracket 36 to move to the winding mechanism 11, so that the column core 2 is located in the accommodating cavity between the left arc plate 37 and the right arc plate 38; then the first motor 20 drives the active tightening shaft 18 to rotate, so as to drive the column core 2 to wind the insulating tape 4 and the circuit sheet 3; when the insulating tape 4 is cut off and the winding is completed, the column is located in the accommodating cavity between the left arc plate 37 and the right arc plate 38; the active tightening shaft 18 and the driven tightening shaft 19 release the tightening against the column core 2; then the first power source 39 drives the bracket 36 to leave the winding mechanism 11, thereby removing the column. The first power source 39 can be set as a linear cylinder or a linear motor. In addition, the position of the left arc plate 37 can be adjusted along the length direction of the first connecting tube 40, and the position of the right arc plate 38 can be adjusted along the length direction of the second connecting tube 42, so as to adjust the size of the accommodating cavity to adapt to printed circuit boards with column structures of different diameters.

[0045] Example 8

[0046] like Figure 8 to Figure 11As shown, on the basis of Example 7, the column-taking mechanism 13 further includes: a left guide member 44 and a right guide member 45; when the left guide member 44 and the right guide member 45 are closed, they cooperate with the column core 2 to form a guide gap 79 for guiding the insulating tape 4 and the circuit sheet 3 to wrap around the column core 2; when the left guide member 44 and the right guide member 45 are closed, there is a second notch for the insulating tape 4 and the circuit sheet 3 to enter the guide gap 79; the left guide member 44 is provided with a plurality of first guide rods 46 extending radially outward along the column core 2, and each first guide rod 46 is respectively limited in each first connecting tube 40; the left guide member 44 is adapted to drive the first cylinder 47 to move radially along the accommodating cavity, and the first cylinder 47 Installed on the bracket 36, the left arc plate 37 and the bracket 36 are provided with a hole for the piston rod of the first cylinder 47 to pass through; the left arc plate 37 is provided with a first accommodating groove 48 for accommodating the left guide member 44; the right guide member 45 is provided with a plurality of second guide rods 49 extending radially outward along the column core 2, and each second guide rod 49 is respectively limited in each second connecting tube 42; the right guide member 45 is adapted to drive the second cylinder 50 to move radially along the accommodating cavity, and the second cylinder 50 is installed on the bracket 36, and the right arc plate 38 and the bracket 36 are provided with a hole for the piston rod of the second cylinder 50 to pass through; the right arc plate 38 is provided with a second accommodating groove 51 for accommodating the right guide member 45.

[0047] It should be understood that when the column core 2 is located in the accommodating cavity between the left arc plate 37 and the right arc plate 38, the first cylinder 47 drives the left guide member 44 to move toward the column core 2, and the second cylinder 50 drives the right guide member 45 to move toward the column core 2, so that the left guide member 44 and the right guide member 45 are closed, thereby forming a guide gap 79 with the column core 2. In this way, when the active abutting shaft 18 drives the column core 2 to rotate, the insulating tape 4 and the circuit chip 3 pressed between the column core 2 and the first driven roller 24 can be wound on the column core 2 along the guide gap 79. By providing the left guide member 44 and the right guide member 45, it can be ensured that the insulating tape 4 and the circuit chip 3 can be stably wound on the column core 2 at the initial stage of winding. After the insulating tape 4 and the circuit chip 3 are initially wound around the column core 2, the first air cylinder 47 can be used to drive the left guide member 44 away from the column core 2 and withdraw it into the first receiving groove 48 of the left guide member 44; and the second air cylinder 50 can be used to drive the right guide member 45 away from the column core 2 and withdraw it into the second receiving groove 51 of the right guide member 45. In this way, the insulating tape 4 and the circuit chip 3 can continue to be wound around the column core 2 to form a column in the receiving cavity.

[0048] Example 9

[0049] like Figure 12 to Figure 14As shown, on the basis of any one of Examples 4 to 8, the first material channel 14 includes: a material storage section extending in the up-down direction, a material discharge section 56 extending in the horizontal direction, and an arc section connecting the bottom end of the material storage section and the material discharge section 56; the pushing mechanism 15 corresponds to the front and back of the material discharge section 56; the pushing mechanism 15 includes: a pushing piece 52, and a second power source 53 that drives the pushing piece 52 to move forward and backward; the glue-distributing mechanism 16 includes: glue-distributing units 54 located on the front and rear sides of the material discharge section 56; the glue-distributing unit 54 located between the material discharge section 56 and the pushing mechanism 15 is adapted to drive the third power source 55 to move up and down; the front and rear ends of the material discharge section 56 are open to expose the end surface of the cylinder 5; the glue-distributing unit 54 includes: glue-distributing The rubber distributing disk 57, a third motor 58 driving the rubber distributing disk 57 to rotate back and forth, and a third driving unit 59 driving the third motor 58 to move forward and backward; the rubber distributing disk 57 is provided with a rubber retaining ring 60 on the side facing the discharge section 56, and the inner diameter of the rubber retaining ring 60 is adapted to the outer diameter of the cylinder 5; the rubber distributing disk 57 is provided with an arc-shaped opening 61 running through the front and rear surfaces for the connecting portion 6 of the circuit chip 3 to pass through; the length of the arc-shaped opening 61 in the arc direction is greater than the length of the connecting portion 6; the material taking mechanism 17 includes: a first pneumatic finger 62, a fourth cylinder 75 driving the first pneumatic finger 62 to move up and down, and a fourth power source 63 driving the fourth cylinder 75 to move forward and backward; the top of the discharge section 56 is open for the material taking mechanism 17 to take away the cylinder 5.

[0050] It should be understood that after the column taking mechanism 13 takes the wound column from the winding mechanism 11, the second power source 53 drives the material pusher 52 to move toward the first material channel 14, so that the column can be pushed from the column taking mechanism 13 into the barrel 5 of the first material channel 14. The third power source 55 drives the glue-distributing unit 54 located in front of the first material channel 14 to move upward, and then the glue-distributing disks 57 of the glue-distributing units 54 on both sides of the first material channel 14 move toward the first material channel 14, so that the glue-distributing disks 57 of the two glue-distributing units 54 are buckled on the front and rear ends of the barrel 5 and the column respectively; then the third motor 58 drives the glue-distributing disk 57 to rotate back and forth, and the resin adhesive squeezed onto the end surface of the column is smoothed, so that the resin adhesive can be evenly covered on the end surface of the column and the barrel 5. Finally, the glue-distributing disks 57 of the two glue-distributing units 54 are separated from the cylinder 5 and the column, and the first pneumatic finger 62 of the material-retrieving mechanism 17 can grab the assembled cylinder 5 and the column; after the resin adhesive is cured, the printed circuit board with a column structure can be obtained. In addition, a sensor can be set to locate the position of the connecting portion 6 of the circuit chip 3, so as to ensure that the arc-shaped opening 61 of the glue-distributing disk 57 can be aligned with the connecting portion 6 of the circuit chip 3, so that the connecting portion 6 of the circuit chip 3 can pass through the arc-shaped opening 61 of the glue-distributing disk 57. In addition, a release film or a release agent can be set on the surface of the glue-distributing disk 57. The second power source 53, the third power source 55, and the fourth power source 63 can be set as a linear cylinder or a linear motor. The third driving unit 59 includes: a slide for mounting the third motor 58, a third guide rail that cooperates with the third slide and extends in the front-to-back direction, a third electromagnet that drives the third slide to approach the first material channel 14, and a third spring 27 that drives the third slide away from the first material channel 14. The structure, working principle and beneficial effects of the third driving unit 59 can be referred to the first driving unit 21 and will not be described in detail here. The third motor 58 is usually configured as a servo motor, which drives the glue-distributing disk 57 to rotate back and forth, and the connecting portion 6 of the circuit chip 3 moves back and forth in the arc-shaped opening 61 of the glue-distributing disk 57.

[0051] Example 10

[0052] like Figure 3 , Figure 4 , Fig.15As shown, on the basis of any one of Examples 4 to 9, the conveying mechanism 7 includes: an active roller 64, a second driven roller 65 cooperating with the active roller 64, and a second motor 66 driving the active roller 64 to rotate; the suction and placement mechanism 9 includes: a plurality of vacuum suction nozzles 67 for sucking and placing the circuit chip 3, a slide 68 for installing the vacuum suction nozzle 67, a third cylinder 69 for driving the slide 68 to move up and down, and a fifth power source 70 for driving the third cylinder 69 to move forward and backward; the cutting mechanism 10 includes: a cutter 71 located below the right end of the stacking table 8, a drive A sixth power source 72 is provided to move the cutter 71 up and down; a limit strip 73 is provided above the right end of the stacking table 8 to limit the insulating tape 4 when the cutter 71 cuts the insulating tape 4; the core feeding mechanism 12 comprises: a second pneumatic finger 74, a fifth cylinder 78 to drive the second pneumatic finger 74 to move up and down, and a seventh power source 76 to drive the fifth cylinder 78 to move forward and backward; a second material channel 77 for supplying the column core 2 is provided at the rear of the winding mechanism 11; the top of the discharge end of the second material channel 77 is open for the core feeding mechanism 12 to take away the column core 2.

[0053] It should be understood that the fifth power source 70 , the sixth power source 72 , and the seventh power source 76 may be configured as linear cylinders or linear motors.

[0054] Although specific embodiments of the present invention are described above, those skilled in the art should understand that various changes or modifications may be made to these embodiments without departing from the principles and essence of the present invention, and these changes and modifications are all within the scope of protection of the present invention.

Claims

1. A printed circuit board, characterized in that: include: Column; The column comprises: a hollow column (1), and a column core (2) filled in the center of the hollow column (1); The hollow column (1) comprises: a composite belt surrounding the column core (2); The composite tape comprises: a circuit sheet (3), and an insulating tape (4) superimposed on the circuit sheet (3); The circuit sheet (3) comprises: an insulating film, and a circuit arranged on the surface of the insulating film; The insulating tape (4) is made of glass fiber cloth or non-woven fabric and is impregnated with a resin adhesive; The length of the insulating tape (4) in the circumferential direction is greater than the length of the circuit sheet (3), so that both the inner circumference and the outer circumference of the hollow column (1) are covered by the insulating tape (4).

2. The printed circuit board according to claim 1, characterized in that: The insulating film is made of polyester film, polyimide film or fluorinated ethylene propylene film; The resin adhesive is epoxy resin, polyimide resin, polycyanate resin or polyolefin resin.

3. The printed circuit board according to claim 1 or 2, characterized in that: It also includes: a cylinder (5) for accommodating the column; The end surfaces of the column and the cylinder (5) are covered with a resin adhesive to seal the column inside the cylinder (5); The circuit sheet (3) is provided with a connecting portion (6), and the connecting portion (6) extends beyond the end surfaces of the column and the cylinder (5).

4. A printed circuit board assembly device, used for assembling the printed circuit board according to claim 3, characterized in that: include: A conveying mechanism (7) for conveying the insulating tape (4) from left to right; and a stacking platform (8) located on the right side of the conveying mechanism (7); and Delivering the circuit sheet (3) to the suction and placement mechanism (9) of the lamination table (8); and a cutting mechanism (10) located on the right side of the lamination platform (8); and a winding mechanism (11) located on the right side of the cutting mechanism (10); and A core feeding mechanism (12) for feeding the column core (2) to the winding mechanism (11); and A column taking mechanism (13) for taking the column from the winding mechanism (11); and A first material channel (14) for supplying the barrel (5); and A pushing mechanism (15) for driving the column into the barrel (5); and A glue-spreading mechanism (16) for evenly coating the end surfaces of the column and the cylinder (5) with the resin adhesive; and A material taking mechanism (17) for taking away the barrel (5).

5. The printed circuit board assembly device according to claim 4, characterized in that: The winding mechanism (11) comprises: a pressing unit for pressing against the front and rear ends of the column core (2), and a driven unit cooperating with the pressing unit; The abutment unit comprises: a coaxial active abutment shaft (18) and a driven abutment shaft (19), a first motor (20) for driving the active abutment shaft (18) to rotate, and a first driving unit (21) for driving the first motor (20) to move forward and backward; The driven clamping shaft (19) is rotatably mounted on the second slide seat (22) via a bearing and is adapted to be coupled to a second driving unit (23) that drives the second slide seat (22) to move forward and backward; The driven unit comprises: a first driven roller (24), and roller frames (25) located at both ends of the first driven roller (24); The end of the first driven roller (24) is rotatably mounted on the slider (26) via a bearing; The roller frame (25) comprises: a horizontal portion, and vertical portions extending upward from left and right ends of the horizontal portion; the two vertical portions are provided with sliding grooves on opposite sides to jointly limit the sliding block (26); The roller frame (25) is provided with a third spring (27) for driving the slider (26) to move upward, and a stopper for limiting the slider (26) is installed on the top of the roller frame (25).

6. The printed circuit board assembly device according to claim 5, characterized in that: The transverse portion has a guide hole extending vertically therethrough, the bottom of the slider (26) has a third guide rod (28) cooperating with the guide hole, and the third spring (27) is sleeved on the third guide rod (28); The first motor (20) is mounted on a first slide seat (29); The first driving unit (21) comprises: a first guide rail (30) cooperating with the first slide seat (29), a first electromagnet (31) driving the first slide seat (29) to approach the driven clamping shaft (19), and a first spring (32) driving the first slide seat (29) to move away from the driven clamping shaft (19); The second driving unit (23) comprises: a second guide rail (33) cooperating with the second slide seat (22), a second electromagnet (34) driving the second slide seat (22) to approach the active clamping shaft (18), and a second spring (35) driving the second slide seat (22) to move away from the active clamping shaft (18); The first guide rail (30) and the second guide rail (33) extend in the front-rear direction.

7. The printed circuit board assembly device according to claim 5 or 6, characterized in that: The column-taking mechanism (13) comprises: a bracket (36), a left arc plate (37) and a right arc plate (38) mounted on the bracket (36), and a first power source (39) for driving the bracket (36) to move left and right; A receiving cavity for receiving the column is formed between the left arc plate (37) and the right arc plate (38); The left arc plate (37) is provided with a plurality of first connecting tubes (40) extending radially outwardly along the accommodating cavity, and the bracket (36) is provided with a first mounting hole (41) for the first connecting tubes (40) to pass through; the first connecting tube (40) is provided with an external thread and is connected to the bracket (36) via a first nut; The right arc plate (38) is provided with a plurality of second connecting tubes (42) extending radially outwardly along the accommodating cavity, and the bracket (36) is provided with a second mounting hole (43) for the second connecting tubes (42) to pass through; the second connecting tube (42) is provided with an external thread and is connected to the bracket (36) via a second nut; A first notch is provided between the lower portion of the left arc plate (37) and the lower portion of the right arc plate (38) to allow the insulating tape (4) and the circuit sheet (3) to be sent from the laminating table (8) to the winding mechanism (11) and to avoid the first driven roller (24) of the winding mechanism (11).

8. The printed circuit board assembly device according to claim 7, characterized in that: The column taking mechanism (13) further comprises: a left guide member (44) and a right guide member (45); When the left guide member (44) and the right guide member (45) are closed, they cooperate with the column core (2) to form a guide gap (79) for guiding the insulating tape (4) and the circuit sheet (3) to be wound around the column core (2); When the left guide member (44) and the right guide member (45) are closed, a second notch is provided for the insulating tape (4) and the circuit sheet (3) to enter the guide gap (79); The left guide member (44) is provided with a plurality of first guide rods (46) extending radially outwardly along the column core (2), and each first guide rod (46) is respectively limited in each first connecting cylinder (40); The left guide member (44) is adapted to be driven by a first cylinder (47) to move radially along the accommodating cavity, the first cylinder (47) being mounted on a bracket (36), and the left arc plate (37) and the bracket (36) being provided with a hole for a piston rod of the first cylinder (47) to pass through; The left arc plate (37) is provided with a first receiving groove (48) for receiving the left guide member (44); The right guide member (45) is provided with a plurality of second guide rods (49) extending radially outwardly along the column core (2), and each second guide rod (49) is respectively confined within each second connecting cylinder (42); The right guide member (45) is adapted to be driven by a second cylinder (50) to move radially along the accommodating cavity, the second cylinder (50) being mounted on a bracket (36), and the right arc plate (38) and the bracket (36) being provided with a hole for the piston rod of the second cylinder (50) to pass through; The right arc plate (38) is provided with a second receiving groove (51) for receiving the right guide member (45).

9. The printed circuit board assembly device according to claim 7, characterized in that: The first material channel (14) comprises: a material storage section extending in the up-down direction, a material discharge section (56) extending in the horizontal direction, and an arc section connecting the bottom end of the material storage section and the material discharge section (56); The pushing mechanism (15) corresponds to the discharging section (56) in front and back; The material pushing mechanism (15) comprises: a material pushing member (52), and a second power source (53) for driving the material pushing member (52) to move forward and backward; The glue-distributing mechanism (16) comprises: glue-distributing units (54) located at the front and rear sides of the material discharging section (56); The glue-distributing unit (54) located between the material discharging section (56) and the material pushing mechanism (15) is adapted to be driven by a third power source (55) to move up and down; The front and rear ends of the discharge section (56) are open to expose the end surface of the cylinder (5); The glue-distributing unit (54) comprises: a glue-distributing disk (57), a third motor (58) for driving the glue-distributing disk (57) to rotate back and forth, and a third driving unit (59) for driving the third motor (58) to move forward and backward; The rubber distributing disk (57) is provided with a rubber retaining ring (60) on a side facing the material discharging section (56), and the inner diameter of the rubber retaining ring (60) is adapted to the outer diameter of the cylinder (5); The glue distribution plate (57) is provided with an arc-shaped opening (61) penetrating the front and rear surfaces to allow the connecting portion (6) of the circuit chip (3) to pass through; the length of the arc-shaped opening (61) in the arc direction is greater than the length of the connecting portion (6); The material picking mechanism (17) comprises: a first pneumatic finger (62), a fourth cylinder (75) for driving the first pneumatic finger (62) to move up and down, and a fourth power source (63) for driving the fourth cylinder (75) to move forward and backward; The top of the material discharging section (56) is open to allow the material taking mechanism (17) to take away the cylinder (5).

10. The printed circuit board assembly device according to any one of claims 4 to 6, characterized in that: The conveying mechanism (7) comprises: a driving roller (64), a second driven roller (65) cooperating with the driving roller (64), and a second motor (66) driving the driving roller (64) to rotate; The suction and placement mechanism (9) comprises: a plurality of vacuum suction nozzles (67) for suction and placement of the circuit chip (3), a slide (68) for mounting the vacuum suction nozzles (67), a third cylinder (69) for driving the slide (68) to move up and down, and a fifth power source (70) for driving the third cylinder (69) to move forward and backward; The cutting mechanism (10) comprises: a cutting knife (71) located below the right end of the stacking platform (8), and a sixth power source (72) for driving the cutting knife (71) to move up and down; The stacking platform (8) is provided with a limiting strip (73) at the upper right end to limit the insulating tape (4) when the cutting knife (71) cuts the insulating tape (4); The core feeding mechanism (12) comprises: a second pneumatic finger (74), a fifth cylinder (78) for driving the second pneumatic finger (74) to move up and down, and a seventh power source (76) for driving the fifth cylinder (78) to move forward and backward; A second material channel (77) for supplying the column core (2) is arranged behind the winding mechanism (11); the top of the discharge end of the second material channel (77) is open to allow the core delivery mechanism (12) to take away the column core (2).

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