Automatic feeding unit for PCB high-speed jet printing

Abstract

The application discloses a kind of automatic feeding units for PCB circuit board high-speed jet printing in the field of circuit board ink-jet printing technology, including material table, the top of the material table is provided with conveying roller, the top of the material table is slidably connected with two push plates symmetrically arranged, first drive mechanism for driving two push plates to move towards is arranged on the material table;The inner side of the push plate is provided with negative pressure cavity, the bottom of the negative pressure cavity is provided with suction disc;The mounting seat is slidably connected in vertical direction in the negative pressure cavity, the mounting seat is elastically slidably connected with sliding plate, and the sliding plate is slidably connected with the push plate;The sliding direction of the sliding plate and the mounting seat is perpendicular;Second drive mechanism for driving the negative pressure cavity to move is arranged in the side of the negative pressure cavity;The present application can better perform jet printing processing on flexible circuit board.

Description

TECHNICAL FIELD

[0001] The application relates to the field of circuit board inkjet printing technology, and particularly relates to an automatic feeding unit for high-speed inkjet printing of a PCB (Printed Circuit Board). BACKGROUND

[0002] Referring to Chinese Patent Literature CN202210901822.1, when a circuit board is inkjet printed, a worker needs to place the circuit board on a feeding machine b, the feeding machine b can adjust the position of the circuit board, so that the circuit board is located at the front side of a printing workbench, and then the circuit board can be accurately moved to the printing workbench; the existing inkjet printer can only be applied to hard circuit boards, and when the feeding machine b adjusts the position of a flexible circuit board, the position of the flexible circuit board cannot be fixed.

[0003] Therefore, the application provides an automatic feeding unit for high-speed inkjet printing of a PCB (Printed Circuit Board) to solve the above problems. SUMMARY

[0004] The application aims to provide an automatic feeding unit for high-speed inkjet printing of a PCB (Printed Circuit Board) to solve the problems in the background art.

[0005] To achieve the above object, the application provides the following technical scheme: an automatic feeding unit for high-speed inkjet printing of a PCB (Printed Circuit Board), comprising a feeding table, wherein the top of the feeding table is provided with conveying rollers, the top of the feeding table is slidably connected with two push plates arranged symmetrically, and the feeding table is provided with a first driving mechanism for driving the two push plates to move towards each other; the inner side of each push plate is provided with a negative pressure cavity, and the bottom of the negative pressure cavity is provided with a suction disc; the negative pressure cavity is slidably connected with a mounting seat in the vertical direction, the mounting seat is elastically slidably connected with a sliding plate, and the sliding plate is slidably connected with the push plate; the sliding direction of the sliding plate and the mounting seat is perpendicular; and the side of the negative pressure cavity is provided with a second driving mechanism for driving the negative pressure cavity to move.

[0006] As a further scheme of the application, the first driving mechanism comprises a bidirectional threaded rod, the bidirectional threaded rod is rotatably connected with the feeding table, and the two push plates are threadedly connected at the two ends of the bidirectional threaded rod, respectively; and the outer side wall of the feeding table is fixedly connected with a first motor for driving the bidirectional threaded rod to rotate.

[0007] As a further scheme of the application, the second driving mechanism comprises a first linear motor and a second linear motor; the first linear motor is installed on the mounting seat and is used for driving the negative pressure cavity to move in the vertical direction; and the second linear motor is installed on the push plate and is used for driving the sliding plate to move in the horizontal direction.

[0008] As a further scheme of the present application, the top of each of the two negative pressure cavities is provided with a connecting rod, the front connecting rod is provided with a plug rod, the rear connecting rod is provided with a plug hole, and the plug rod can be connected with the plug hole.

[0009] As a further scheme of the present application, the locking mechanism comprises a pressing block, the pressing block is in sliding connection with the plug rod, the pressing block is in threaded connection with a first threaded rod, the first threaded rod is in rotational connection with the plug rod, a first belt pulley is fixedly connected to the rotational shaft of the first threaded rod, the first belt pulley is in transmission connection with a second belt pulley through a transmission belt, the second belt pulley is in rotational connection with the front connecting rod, a first gear is in transmission connection with the rotational shaft of the second belt pulley through a one-way bearing, the first gear is in meshing connection with a first rack rod, the first rack rod is in elastic sliding connection with the front connecting rod, a pull rope is fixedly connected to the first rack rod, and the end of the pull rope away from the first rack rod is fixedly connected with a sliding plate.

[0010] As a further scheme of the present application, the connecting rod is in rotational connection with the negative pressure cavity, a third gear is fixedly connected to the rotational shaft of the connecting rod, the third gear is in meshing connection with a third rack rod, and the third rack rod is fixedly connected with the material table.

[0011] As a further scheme of the present application, the conveying roller is in rotational connection with a sliding table, and the sliding table is in sliding connection with the material table in the vertical direction.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] 1. The present application adjusts the position of the flexible circuit board through the push plate, the negative pressure cavity and the suction cup, then the negative pressure cavity cooperates with the suction cup to fix the front and rear sections of the flexible circuit board, and the suction cup can pull the flexible circuit board to completely unfold under the action of the spring during the outward movement of the push plate; meanwhile, the connecting rod and the pressing block are provided, the pressing block can relatively fix the two negative pressure cavities through the connecting rod after the flexible circuit board is unfolded, which can ensure the position of the flexible circuit board to be accurate and not to be completely deformed when being conveyed to the printing workbench, and can greatly improve the printing efficiency of the flexible circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0015] Figure 2 It is a schematic diagram of the push plate, the bidirectional threaded rod and the first motor structure of the present application;

[0016] Figure 3 For part of the structural diagram of the present application;

[0017] Figure 4 For the first rack bar and the rope structure of the present application;

[0018] Figure 5 For the second rack, one-way bearing, first gear, first rack bar and second gear structure of the present application;

[0019] Figure 6 For the third gear, third rack bar and slide structure of the present application.

[0020] In the drawings, the components represented by each reference numeral are listed as follows:

[0021] material table 1, conveying roller 2, push plate 3, negative pressure cavity 4, suction cup 5, mounting seat 6, sliding plate 7, two-way threaded rod 8, first motor 9, first linear motor 10, second linear motor 11, connecting rod 12, plug rod 13, plug hole 14, pressing block 15, first threaded rod 16, first belt pulley 17, transmission belt 18, second belt pulley 19, one-way bearing 20, first gear 21, first rack bar 22, rope 23, second gear 24, second rack bar 25, third gear 26, third rack bar 27, slide 28. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figures 1-6 The present application provides a technical solution: an automatic feeding unit for high-speed jet printing of a PCB circuit board, comprising a material table 1, wherein the top of the material table 1 is provided with conveying rollers 2, the top of the material table 1 is slidingly connected with two push plates 3 arranged symmetrically, and the material table 1 is provided with a first driving mechanism for driving the two push plates 3 to move towards each other; the inner side of each push plate 3 is provided with a negative pressure cavity 4, and the bottom of the negative pressure cavity 4 is provided with a suction cup 5; the negative pressure cavity 4 is slidingly connected with a mounting seat 6 in the vertical direction, the mounting seat 6 is elastically slidingly connected with a sliding plate 7, and the sliding plate 7 is slidingly connected with the push plate 3; the sliding directions of the sliding plate 7 and the mounting seat 6 are perpendicular; and the side of the negative pressure cavity 4 is provided with a second driving mechanism for driving the negative pressure cavity 4 to move.

[0024] The first driving mechanism comprises a bidirectional threaded rod 8, the bidirectional threaded rod 8 is rotatably connected with the material table 1, and two push plates 3 are respectively threadedly connected at two ends of the bidirectional threaded rod 8; a first motor 9 for driving the bidirectional threaded rod 8 to rotate is fixedly connected to the outer side wall of the material table 1.

[0025] The second driving mechanism comprises a first linear motor 10 and a second linear motor 11; the first linear motor 10 is installed on the mounting seat 6 and is used for driving the negative pressure cavity 4 to move in the vertical direction; the second linear motor 11 is installed on the push plate 3 and is used for driving the sliding plate 7 to move in the horizontal direction.

[0026] The top of each of the two negative pressure cavities 4 is provided with a connecting rod 12, the front connecting rod 12 is provided with a plug rod 13, the rear connecting rod 12 is provided with a plug hole 14, the plug rod 13 can be connected with the plug hole 14, and a locking mechanism is arranged on the plug rod 13.

[0027] The locking mechanism comprises a pressing block 15, the pressing block 15 is slidably connected with the plug rod 13, the pressing block 15 is threadedly connected with a first threaded rod 16, the first threaded rod 16 is rotatably connected with the plug rod 13, a first belt pulley 17 is fixedly connected to the rotation shaft of the first threaded rod 16, the first belt pulley 17 is drivingly connected with a second belt pulley 19 through a transmission belt 18, the second belt pulley 19 is rotatably connected with the front connecting rod 12, a first gear 21 is drivingly connected to the rotation shaft of the second belt pulley 19 through a one-way bearing 20, the first gear 21 is engaged with a first rack rod 22, the first rack rod 22 is elastically and slidably connected with the front connecting rod 12, a pull rope 23 is fixedly connected to the first rack rod 22, and one end of the pull rope 23 away from the first rack rod 22 is fixedly connected with the sliding plate 7; a second gear 24 is also fixedly connected to the rotation shaft of the second belt pulley 19, a second rack rod 25 capable of being engaged with the second gear 24 is arranged on the side of the second gear 24, and the second rack rod 25 is fixedly installed at the top of the front push plate 3.

[0028] The working principle is as follows, Figures 1-5As shown, the worker will be placed in the flexible circuit board to be processed to the top of the table 1, the delivery roller 2 under the action of the external drive device driven flexible circuit board to the right, after the flexible circuit board is roughly moved to the two push plate 3, the delivery roller 2 stop working; then the first motor 9 starts to work, the first motor 9 will drive the bidirectional screw rod 8 rotation, the bidirectional screw rod 8 will drive the two push plate 3 move towards each other, the two push plate 3 will drive the negative pressure cavity 4 and suction cup 5 synchronous movement; the negative pressure cavity 4 will drive the connecting rod 12 synchronous movement, until the front connecting rod 12 on the plug rod 13 inserted into the rear connecting rod 12 on the insertion hole 14, the two connecting rod 12 butt joint; first, the two push plate 3 in the process of moving towards each other, can adjust the position of the flexible circuit board, can do is to make the two sides of the flexible circuit board and push plate 3 with the inner wall of the fit, but due to the flexible circuit board has the characteristics of bending, the flexible circuit board position adjustment, push plate 3 can continue to move; after the middle of the flexible circuit board is raised, the first linear motor 10 drive negative pressure cavity 4 drive suction cup 5 downward movement, due to the negative pressure cavity 4 and suction cup 5 and push plate 3 with the inner wall close, suction cup 5 in the downward movement to contact with the flexible circuit board, the front and rear suction cup 5 will be respectively pressed tightly in front of and behind the two ends of the flexible circuit board; then the negative pressure cavity 4 work makes suction cup 5 adsorption flexible circuit board; then the first motor 9 can drive the push plate 3 to move outward; because the front and rear negative pressure cavity 4 are through the slide plate 7 and push plate 3 elastic sliding connection, therefore, the push plate 3 in the process of moving outward will be through the spring, slide plate 7 and mounting seat 6 drive negative pressure cavity 4 synchronous outward movement, until the flexible circuit board is laid in the top of the table 1, at this time, the flexible circuit board is in the table 1 in the middle of the position (front and rear direction) ;Then, push plate 3 can continue to move outward and return to its initial position. During this process, since the flexible circuit board is fully unfolded and fixed by suction cup 5, the negative pressure chamber 4 and suction cup 5 no longer move outward with push plate 3. At this time, push plate 3 drives slide plate 7 to move outward. Slide plate 7 will drive first rack rod 22 to move outward relative to connecting rod 12 through pull rope 23. First rack rod 22 will drive first gear 21 to rotate. First gear 21 will drive second pulley 19 to rotate through one-way bearing 20. Second pulley 19 will drive first pulley 17 to rotate synchronously through transmission belt 18. First pulley 17 will drive first screw... When the threaded rod 16 rotates, it drives the pressure block 15 to move downwards. The pressure block 15 fixes the two connecting rods 12 relative to each other. At this time, the suction cup 5, in conjunction with the negative pressure chamber 4, keeps the flexible circuit board in an unfolded state in the left-right direction. The two connecting rods 12, after the flexible circuit board is laid flat, are relatively fixed, which keeps the flexible circuit board in an unfolded state in the front-back direction. This ensures that the flexible circuit board will not bend during subsequent transportation, allowing for better inkjet printing. After the push plate 3 moves back to its initial position, the second linear motor 11 drives the slide plate 7 to move to the right. The slide plate 7, through the mounting base 6, drives the negative pressure chamber 4. The suction cup 5 and the flexible circuit board move synchronously to the right until the flexible circuit board is directly above the printing table. Then, the negative pressure chamber 4 stops working, the suction cup 5 no longer adheres to the flexible circuit board, and the flexible circuit board can then remain on the printing table. Then, the second linear motor 11 drives the negative pressure chamber 4 to move to the left to the initial position. During the leftward movement of the negative pressure chamber 4, the second rack rod 25 drives the second gear 24 to rotate, thereby causing the first threaded rod 16 to rotate in the opposite direction, thereby causing the pressure block 15 to move upward and release the fixation of the two connecting rods 12. Then, under the elastic force of the spring, the negative pressure chamber 4 can move outward back to the initial position. This invention, through the arrangement of a push plate 3, a negative pressure chamber 4, and a suction cup 5, allows the push plate 3 to adjust the position of the flexible circuit board. The negative pressure chamber 4, in conjunction with the suction cup 5, can fix the front and rear sections of the flexible circuit board. Furthermore, as the push plate 3 moves outward, the suction cup 5, under the action of a spring, can pull the flexible circuit board fully unfolded. Simultaneously, through the arrangement of a connecting rod 12 and a pressure block 15, the pressure block 15 can, after the flexible circuit board is unfolded, fix the two negative pressure chambers relative to each other via the connecting rod 12. This ensures that the flexible circuit board is accurately positioned and does not undergo complete deformation when transported to the printing table, significantly improving the printing efficiency of the flexible circuit board.

[0029] As a further embodiment of the present invention, the connecting rod 12 is rotatably connected to the negative pressure chamber 4, and a third gear 26 is fixedly connected to the rotating shaft of the connecting rod 12. The third gear 26 meshes with a third rack rod 27, and the third rack rod 27 is fixedly connected to the material platform 1.

[0030] At work, such as Figure 6As shown, the connecting rod 12 is in vertical state in the initial state, so that the staff can place the flexible circuit board on the top of the material table 1; when the two push plates 3 drive the negative pressure cavity 4 to move towards each other, the third rack rod 27 drives the third gear 26 to rotate, and the third rack 26 drives the connecting rod 12 to rotate to the horizontal position; after the flexible circuit board is conveyed, the negative pressure cavity 4 moves outward to the initial position, the third rack rod 27 drives the third gear 26 to drive the connecting rod to rotate to Figure 6 the state shown.

[0031] As a further scheme of the present application, the conveying roller 2 is rotationally connected with a sliding table 28, and the sliding table 28 is slidably connected with the material table 1 in the vertical direction.

[0032] In work, through the setting of the sliding table 28, the sliding table 28 can drive the conveying roller 2 to move in the vertical direction, and after the conveying roller 2 conveys the flexible circuit board to the middle position of the material table 1, the sliding table 28 can drive the conveying roller 2 to move downward, so that the flexible circuit board is attached to the material table 1, and the subsequent suction cups 5 can better fix the flexible circuit board.

[0033] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0034] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic feeding unit for high-speed inkjet printing of PCB circuit boards, comprising a material table (1), characterized in that: The top of the material platform (1) is provided with conveying rollers (2), and the top of the material platform (1) is slidably connected with two symmetrically arranged push plates (3). The material platform (1) is provided with a first driving mechanism for driving the two push plates (3) to move towards each other. The inner side of each push plate (3) is provided with a negative pressure chamber (4), and the bottom of the negative pressure chamber (4) is provided with a suction cup (5). The negative pressure chamber (4) is slidably connected with a mounting base (6) in the vertical direction. The mounting base (6) is elastically slidably connected with a sliding plate (7), and the sliding plate (7) is slidably connected to the push plate (3). The sliding direction of the sliding plate (7) and the mounting base (6) is perpendicular. The side of the negative pressure chamber (4) is provided with a second driving mechanism for driving its movement. A connecting rod (12) is installed on the top of each of the two negative pressure chambers (4). A plug rod (13) is installed on the front connecting rod (12), and a plug hole (14) is opened on the rear connecting rod (12). The plug rod (13) can be connected to the plug hole (14). A locking mechanism is provided on the plug rod (13). The locking mechanism includes a pressure block (15), which is slidably connected to the insertion rod (13). The pressure block (15) is threadedly connected to a first threaded rod (16), which is rotatably connected to the insertion rod (13). A first pulley (17) is fixedly connected to the rotating shaft of the first threaded rod (16). The first pulley (17) is driven by a second pulley (19) via a transmission belt (18). The second pulley (19) is rotatably connected to the connecting rod (12) on the front side. A one-way bearing (20) is driven by a second pulley (19) on the rotating shaft of the second pulley (19). The first gear (21) meshes with the first rack (22), the first rack (22) is elastically slidably connected to the front connecting rod (12), and a pull rope (23) is fixedly connected to the first rack (22). The end of the pull rope (23) away from the first rack (22) is fixedly connected to the slide plate (7). The second gear (24) is also fixedly connected to the rotating shaft of the second pulley (19). The side of the second gear (24) is provided with a second rack (25) that can mesh with it. The second rack (25) is fixedly installed on the top of the front push plate (3).

2. The automatic feeding unit for high-speed inkjet printing of PCB circuit boards according to claim 1, characterized in that: The first driving mechanism includes a bidirectional threaded rod (8), which is rotatably connected to the material table (1), and two push plates (3) are respectively threaded to both ends of the bidirectional threaded rod (8); a first motor (9) for driving the bidirectional threaded rod (8) to rotate is fixedly connected to the outer wall of the material table (1).

3. The automatic feeding unit for high-speed inkjet printing of PCB circuit boards according to claim 1, characterized in that: The second drive mechanism includes a first linear motor (10) and a second linear motor (11); the first linear motor (10) is mounted on the mounting base (6) and is used to drive the negative pressure chamber (4) to move in the vertical direction; the second linear motor (11) is mounted on the push plate (3) and is used to drive the slide plate (7) to move in the horizontal direction.

4. The automatic feeding unit for high-speed inkjet printing of PCB circuit boards according to claim 1, characterized in that: The connecting rod (12) is rotatably connected to the negative pressure chamber (4). A third gear (26) is fixedly connected to the rotating shaft of the connecting rod (12). The third gear (26) meshes with a third rack rod (27). The third rack rod (27) is fixedly connected to the material platform (1).

5. The automatic feeding unit for high-speed inkjet printing of PCB circuit boards according to claim 1, characterized in that: The conveying roller (2) is rotatably connected to a slide (28), and the slide (28) is slidably connected to the material table (1) in the vertical direction.

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