A conveying unit for PCB circuit board high-speed jet printing

Abstract

The application discloses a conveying unit for high-speed ink-jet printing of a PCB (Printed Circuit Board), belonging to the technical field of ink-jet printing of a circuit board, which comprises a transfer table, a first mounting frame is mounted on the outer side of the transfer table, a turnover mechanism and a conveying mechanism are arranged on the first mounting frame, the turnover mechanism is used for turning over a flexible circuit board, and the conveying mechanism is used for conveying the flexible circuit board; and the flexible circuit board can be better turned over.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of circuit board inkjet printing technology, in particular to a conveying unit for high-speed inkjet printing of PCBs. BACKGROUND

[0002] Referring to Chinese patent document CN202210901822.1, after one side of the circuit board is inkjet printed, the board turnover machine needs to turn over the circuit board, and then the inkjet printer performs inkjet printing on the other side. When the circuit board to be inkjet printed is a flexible circuit board, the turnover machine has great difficulty in turning over the circuit board, and the flexible circuit board is prone to bending and deforming during the turnover process, which greatly reduces the inkjet printing quality.

[0003] Therefore, the present application provides a conveying unit for high-speed inkjet printing of PCBs to solve the above problems. SUMMARY

[0004] The present application aims to provide a conveying unit for high-speed inkjet printing of PCBs to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a conveying unit for high-speed inkjet printing of PCBs, comprising a transfer table, a first mounting bracket is installed on the outer side of the transfer table, a turnover mechanism and a conveying mechanism are provided on the first mounting bracket, the turnover mechanism is used for turning over the flexible circuit board, and the conveying mechanism is used for conveying the flexible circuit board.

[0006] As a further solution of the present application, the turnover mechanism comprises a first sliding groove and a second mounting bracket; the first sliding groove is opened on the side wall of the first mounting bracket, a first rotating shaft is slidingly connected in the first sliding groove, a first suction cup is fixedly connected to the first rotating shaft, and the first suction cup is located on the left side of the transfer table; the second mounting bracket is provided on the right side of the first mounting bracket and is elastically slidingly connected with the second mounting bracket in the vertical direction; a rotating roller is installed on the second mounting bracket, and a second sliding groove is opened on the second mounting bracket; the second sliding groove is composed of two first horizontal grooves and a semicircular first arc-shaped groove, the first arc-shaped groove is coaxially provided with the rotating roller; the two first horizontal grooves are respectively communicated with both ends of the first arc-shaped groove, and the first horizontal groove can be butt-jointed with the first sliding groove; the first rotating shaft can slide in the second sliding groove; a first driving mechanism is provided on the first mounting bracket for driving the first rotating shaft to move in the first sliding groove and the second sliding groove; a second driving mechanism is provided on the second mounting bracket, and the second driving mechanism drives the second mounting bracket to move upward after the first rotating shaft moves into the second sliding groove, so that the lower first horizontal groove is butt-jointed with the first sliding groove.

[0007] As a further scheme of the present application, the first driving mechanism comprises a gear rotatably mounted on the first rotating shaft, and a first motor drivingly connected to the rotating shaft of the gear; the first mounting frame is fixedly provided with a first rack bar, which is identical in shape to the first sliding groove; the second mounting frame is fixedly provided with a second rack bar, which is identical in shape to the second sliding groove; and the gear is capable of engaging with the first and second rack bars.

[0008] As a further scheme of the present application, the second driving mechanism comprises a wedge-shaped limiting block elastically and slidably connected to the second mounting frame, a clamping groove is formed in the side wall of the first mounting frame, and the wedge-shaped limiting block is capable of being inserted into the clamping groove; the bottom of the wedge-shaped limiting block is fixedly connected with a first push rod, and the bottom end of the first push rod extends into the first horizontal groove above; the second mounting frame is provided with a second push rod above, and the second push rod is capable of driving the second mounting frame to move downward when the conveying mechanism is working.

[0009] As a further scheme of the present application, the conveying mechanism comprises a second suction disc and a third driving mechanism; the second suction disc is arranged above the transfer table, and the second push rod is fixedly mounted on the top of the second suction disc; and the third driving mechanism is used for driving the second suction disc to move.

[0010] As a further scheme of the present application, the third driving mechanism comprises a cylinder and a linear motor, the output end of the cylinder is fixedly connected with the second suction disc, and the linear motor is used for driving the cylinder to move the second suction disc in the left-right direction.

[0011] As a further scheme of the present application, a third sliding groove is formed in the first mounting frame, the third sliding groove is composed of a second arc-shaped groove, a vertical groove and two second horizontal grooves, the two second horizontal grooves are oppositely arranged and used for connecting the second arc-shaped groove and the vertical groove, and the second horizontal grooves and the vertical groove below are all communicated with the first sliding groove; the third sliding groove is provided with a third rack bar identical in shape to the third sliding groove in the side edge, and the third rack bar is capable of engaging with the gear.

[0012] As a further scheme of the present application, a sliding plate is elastically and slidably connected to the first mounting frame, a guide roller is rotatably mounted on the sliding plate, and the guide roller is located directly above the transfer table; a wedge-shaped block is fixedly connected to the side wall of the sliding plate, a push block capable of driving the wedge-shaped block to move upward is arranged in the side edge of the wedge-shaped block, and the push block is fixedly mounted on the top of the first suction disc.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] The present application sets the turnover mechanism, which can fix the flexible circuit board after the printing workbench completes the printing work, so as to ensure that the position of the flexible circuit board will not be offset; meanwhile, through the setting of the first sliding groove, the second sliding groove can drive the first suction cup to turn over the flexible circuit board by 180°, the space required for the upward movement of the second mounting frame is small, and the flexible circuit board is turned over more conveniently and simply. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0016] Figure 2 It is a schematic diagram of the first sliding groove, the second sliding groove and the third sliding groove structure of the present application;

[0017] Figure 3 It is a schematic diagram of the first driving mechanism structure of the present application;

[0018] Figure 4 It is a schematic diagram of the second driving mechanism structure of the present application;

[0019] Figure 5 It is a schematic diagram of part of the mechanism of the present application.

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

[0021] The transfer table 1, the first mounting frame 2, the first sliding groove 3, the second mounting frame 4, the first rotating shaft 5, the first suction cup 6, the rotating roller 7, the second sliding groove 8, the gear 9, the first rack bar 10, the second rack bar 11, the wedge-shaped limiting block 12, the clamping groove 13, the first push rod 14, the second suction cup 15, the air cylinder 16, the linear motor 17, the third sliding groove 18, the third rack bar 19, the sliding plate 20, the guide roller 21, the wedge-shaped block 22, the push block 23, the first motor 24, the second push rod 25. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with 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 1-5 The present application provides a technical solution: a conveying unit for high-speed printing of a PCB circuit board, comprising a transfer table 1, wherein the outer side of the transfer table 1 is provided with a first mounting frame 2, the first mounting frame 2 is provided with a turnover mechanism and a conveying mechanism, the turnover mechanism is used for turning over a flexible circuit board, and the conveying mechanism is used for conveying the flexible circuit board.

[0024] The turnover mechanism comprises a first sliding groove 3 and a second mounting frame 4; the first sliding groove 3 is arranged on the side wall of the first mounting frame 2, a first rotating shaft 5 is slidingly connected in the first sliding groove 3, a first suction disc 6 is fixedly connected to the first rotating shaft 5, and the first suction disc 6 is located on the left side of the transfer table 1; the second mounting frame 4 is arranged on the right side of the first mounting frame 2 and is elastically slidingly connected with the second mounting frame 4 in the vertical direction; a rotating roller 7 is mounted on the second mounting frame 4, and a second sliding groove 8 is arranged on the second mounting frame 4; the second sliding groove 8 is composed of two first transverse grooves and a semicircular first arc-shaped groove, the first arc-shaped groove is coaxially arranged with the rotating roller 7, the two first transverse grooves are respectively communicated with two ends of the first arc-shaped groove, and the first transverse grooves can be butted with the first sliding groove 3; the first rotating shaft 5 can slide in the second sliding groove 8; a first driving mechanism for driving the first rotating shaft 5 to move in the first sliding groove 3 and the second sliding groove 8 is arranged on the first mounting frame 2; a second driving mechanism is arranged on the second mounting frame 4, and the second driving mechanism drives the second mounting frame 4 to move upward after the first rotating shaft 5 moves into the second sliding groove 8 so that the lower first transverse groove is butted with the first sliding groove 3.

[0025] The first driving mechanism comprises a gear 9, the gear 9 is rotatably mounted on the first rotating shaft 5, a first motor 24 is drivingly connected to the rotating shaft of the gear 9, a first rack rod 10 is fixedly mounted on the first mounting frame 2, the first rack rod 10 has the same shape as the first sliding groove 3, a second rack rod 11 is fixedly mounted on the second mounting frame 4, the second rack rod 11 has the same shape as the second sliding groove 8, and the gear 9 can be engaged with the first rack rod 10 and the second rack rod 11.

[0026] The second driving mechanism comprises a wedge-shaped limiting block 12, the wedge-shaped limiting block 12 is elastically slidingly connected with the second mounting frame 4, a clamping groove 13 is arranged on the side wall of the first mounting frame 2, and the wedge-shaped limiting block 12 can be inserted into the clamping groove 13; a first push rod 14 is fixedly connected to the bottom of the wedge-shaped limiting block 12, and the bottom end of the first push rod 14 extends into the upper first transverse groove; a second push rod 25 is arranged above the second mounting frame 4, and the second push rod 25 can drive the second mounting frame 4 to move downward when the conveying mechanism works.

[0027] When working, as Figures 1-5As shown, after the flexible circuit board is jet-printed on one side, the jet-printing workbench will transport the flexible circuit board to the left side of the transfer table 1. When the right end of the jet-printing workbench is attached to the left end of the transfer table 1, the end of the flexible circuit board is located below the first suction cup 6. Then the first suction cup 6 can adsorb the right end of the flexible circuit board by cooperating with the external vacuum equipment. Then the first motor 24 is started, and the first motor 24 will drive the gear 9 to rotate. When the gear 9 rotates, the first rack rod 10 will drive it to move to the right. The gear 9 will drive the first suction cup 6 to move to the right synchronously through the first rotating shaft 5. The first suction cup 6 will drive the flexible circuit board to move to the right synchronously. As shown in Figure 3 and Figure 4 As shown, when the first rotating shaft 5 moves from the first sliding groove 3 to the second sliding groove 8, the first rotating shaft 5 will contact the first push rod 14, and the first rotating shaft 5 will drive the first push rod 14 to move to the right. The first push rod 14 will drive the wedge-shaped limiting block 12 to move to the right synchronously until the wedge-shaped limiting block 12 is separated from the clamping groove 13. Then the second mounting frame 4 will move upward under the action of the spring until the first horizontal groove below the second sliding groove 8 is connected with the first sliding groove 3. The upward movement of the second mounting frame 4 will drive the rotating roller 7 to move upward synchronously, and the rotating roller 7 will move above the transfer table 1. The gear 9 will cooperate with the second rack rod 11 to drive the first rotating shaft 5 to move in the second sliding groove 8. When the first rotating shaft 5 moves from the upper first horizontal groove to the lower first horizontal groove through the first arc-shaped groove, the first rotating shaft 5 drives the first suction cup 6 to turn over 180°. At this time, the first suction cup 6 will drive the right end of the flexible circuit board to turn over 180°, and the jet-printed side of the flexible circuit board faces downward. It should be noted that when the gear 9 moves from the first horizontal groove below the second sliding groove 8 to the first sliding groove 3, the first motor 24 starts to drive the gear 9 to reverse. At this time, the gear 9 drives the first rotating shaft 5 and the first suction cup 6 to move to the left by cooperating with the first rack rod 10. The first suction cup 6 will drive the flexible circuit board to move to the left until the first suction cup 6 moves to the initial position. At this time, the flexible circuit board completes the turning-over work. Then the conveying mechanism can convey the flexible circuit board to the right to the next jet-printing workbench for jet-printing work on the second side. Through the setting of the turning-over mechanism, the turning-over mechanism can fix the flexible circuit board after the jet-printing workbench completes the jet-printing work, which can ensure that the position of the flexible circuit board will not deviate. At the same time, through the setting of the first sliding groove 3 and the second sliding groove 8, the second sliding groove 8 can drive the first suction cup 6 to drive the flexible circuit board to turn over 180°. The second mounting frame 4 needs smaller space to move upward, and the turning-over of the flexible circuit board is more convenient and simple.

[0028] As a further scheme of the present application, the conveying mechanism comprises a second suction cup 15 and a third driving mechanism. The second suction cup 15 is arranged above the transfer table 1, and the second push rod 25 is fixedly installed on the top of the second suction cup 15. The third driving mechanism is used to drive the second suction cup 15 to move.

[0029] The third driving mechanism comprises a cylinder 16 and a linear motor 17, the output end of the cylinder 16 is fixedly connected with the second suction plate 15, and the linear motor 17 is used for driving the cylinder 16 to drive the second suction plate 15 to move in the left-right direction.

[0030] When working, as shown in Figure 1 , when the flexible circuit board is completed to be turned over, the cylinder 16 drives the second suction plate 15 to move downwards to adsorb the right end of the flexible circuit board, the second suction plate 15 will drive the second mounting frame 4 to move downwards to the initial position through the second push rod 25; the linear motor 17 can drive the cylinder 16 to drive the second suction plate 15 to move to the right, the second suction plate 15 will convey the flexible circuit board to the next printing workbench, then the second suction plate 15 can release the flexible circuit board and return to the initial position.

[0031] As a further scheme of the present application, a third sliding groove 18 is formed on the first mounting frame 2, the third sliding groove 18 is composed of a second arc-shaped groove, a vertical groove and two second transverse grooves, the two second transverse grooves are oppositely arranged and used for connecting the second arc-shaped groove and the vertical groove, and the lower second transverse groove and the vertical groove are communicated with the first sliding groove 3; a third rack rod 19 with the same shape as the third sliding groove 18 is arranged on the side of the third sliding groove 18, and the third rack rod 19 can be engaged with the gear 9.

[0032] When working, as shown in Figure 2 and Figure 3 , when the first suction plate 6 drives the flexible circuit board to be completed to be turned over and moved to the left end of the first sliding groove 3, the first suction plate 6 can release the flexible circuit board, then the first motor 24 can drive the gear 9 to continue to rotate, the gear 9 will drive the first rotating shaft 5 and the first suction plate 6 to move in the third sliding groove 18 in cooperation with the third rack rod 19, the first suction plate 6 will be turned over again in the third sliding groove 18, so that the next work is facilitated.

[0033] As a further scheme of the present application, a sliding plate 20 is elastically and slidably connected to the first mounting frame 2, a guide roller 21 is rotatably installed on the sliding plate 20, and the guide roller 21 is located directly above the transfer table 1; a wedge-shaped block 22 is fixedly connected to the side wall of the sliding plate 20, a push block 23 capable of driving the wedge-shaped block 22 to move upwards is arranged on the side of the wedge-shaped block 22, and the push block 23 is fixedly installed on the top of the first suction plate 6.

[0034] When working, as shown in Figure 1 and Figure 5As shown, when the first suction cup 6 moves right, the first suction cup 6 will drive the push block 23 to move right synchronously, when the push block 23 moves right to contact the wedge block 22, the push block 23 will drive the wedge block 22 to move up, the wedge block 22 will drive the sliding plate 20 and the guide roller 21 to move up synchronously, so that the guide roller 21 will not hinder the first suction cup 6 to move right, after the first suction cup 6 moves to the right side of the guide roller 21, the sliding plate 20 and the guide roller 21 can move down to the initial position under the action of the spring, at this time, the guide roller 21 can press the flexible circuit board, so that the flexible circuit board can be better prevented from being bent during the movement.

[0035] Working principle: as Figures 1-5 As shown, after the flexible circuit board is sprayed on one side by the spray printing workbench, the flexible circuit board is transported to the left side of the transfer table 1, when the right end of the spray printing workbench is attached to the left end of the transfer table 1, the end of the flexible circuit board is located below the first suction cup 6, then the first suction cup 6 can adsorb the right end of the flexible circuit board by cooperating with the external vacuum equipment; then the first motor 24 is started, the first motor 24 will drive the gear 9 to rotate, when the gear 9 rotates, the first rack rod 10 will drive it to move right, the gear 9 will drive the first suction cup 6 to move right synchronously through the first rotating shaft 5, the first suction cup 6 will drive the flexible circuit board to move right synchronously; as Figure 3 and Figure 4When the first rotating shaft 5 moves from the first sliding groove 3 into the second sliding groove 8, the first rotating shaft 5 will contact the first push rod 14, the first rotating shaft 5 will drive the first push rod 14 to move right, the first push rod 14 will drive the wedge-shaped limiting block 12 to move right synchronously until the wedge-shaped limiting block 12 is disengaged from the clamping groove 13; then the second mounting frame 4 will move up under the action of the spring until the first horizontal groove below the second sliding groove 8 is connected with the first sliding groove 3; the second mounting frame 4 moving up will drive the rotating roller 7 to move up synchronously, the rotating roller 7 will move above the transfer table 1; the gear 9 will cooperate with the second rack bar 11 to drive the first rotating shaft 5 to move in the second sliding groove 8; when the first rotating shaft 5 moves from the upper first horizontal groove through the first arc-shaped groove into the lower first horizontal groove, the first rotating shaft 5 drives the first suction disc 6 to overturn 180°, at this time, the first suction disc 6 will drive the right end of the flexible circuit board to overturn 180°, and the printed surface of the flexible circuit board faces downward; it should be noted that when the gear 9 moves from the first horizontal groove below the second sliding groove 8 into the first sliding groove 3, the first motor 24 starts to drive the gear 9 to reverse, at this time, the gear 9 cooperates with the first rack bar 10 to drive the first rotating shaft 5 and the first suction disc 6 to move left, the first suction disc 6 will drive the flexible circuit board to move left until the first suction disc 6 moves to the initial position, at this time, the flexible circuit board completes the overturning work; then the conveying mechanism can convey the flexible circuit board right to the next printing workbench to perform the printing work on the second surface; through the setting of the overturning mechanism, the overturning mechanism can fix the flexible circuit board after the printing workbench completes the printing work, so that the position of the flexible circuit board cannot be deviated; meanwhile, through the setting of the first sliding groove 3 and the second sliding groove 8, the second sliding groove 8 can drive the first suction disc 6 to overturn the flexible circuit board 180°, the second mounting frame 4 needs smaller space to move up, and the flexible circuit board is more convenient and simple to overturn.

[0036] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] While embodiments of the present application have been shown and described with reference to certain embodiments thereof, it is understood that the present application has been presented for purposes of example only and that those skilled in the art will be able to devise variations in form, detail, and arrangement of parts without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A conveying unit for high-speed inkjet printing of PCB circuit boards, comprising a transfer table (1), characterized in that: A first mounting frame (2) is installed on the outside of the transfer platform (1). The first mounting frame (2) is provided with a flipping mechanism and a conveying mechanism. The flipping mechanism is used to flip the flexible circuit board, and the conveying mechanism is used to convey the flexible circuit board. The flipping mechanism includes a first chute (3) and a second mounting bracket (4); the first chute (3) is formed on the side wall of the first mounting bracket (2), and a first rotating shaft (5) is slidably connected in the first chute (3). A first suction cup (6) is fixedly connected to the first rotating shaft (5), and the first suction cup (6) is located on the left side of the transfer table (1); the second mounting bracket (4) is set on the right side of the first mounting bracket (2) and is elastically slidably connected to the second mounting bracket (4) in the vertical direction; a rotating roller (7) is mounted on the second mounting bracket (4), and a second chute (8) is formed on the second mounting bracket (4); the second chute (8) consists of two first transverse grooves and a half-groove. The first arc groove is circular and coaxially arranged with the rotating roller (7); two first transverse grooves are respectively connected to the two ends of the first arc groove, and the first transverse grooves can dock with the first slide groove (3); the first rotating shaft (5) can slide in the second slide groove (8); the first mounting frame (2) is provided with a first driving mechanism for driving the first rotating shaft (5) to move in the first slide groove (3) and the second slide groove (8); the second mounting frame (4) is provided with a second driving mechanism, which drives the second mounting frame (4) to move upward after the first rotating shaft (5) moves into the second slide groove (8) so that the lower first transverse groove docks with the first slide groove (3); The second driving mechanism includes a wedge-shaped limiting block (12), which is elastically slidably connected to the second mounting frame (4). The first mounting frame (2) has a slot (13) on its side wall, and the wedge-shaped limiting block (12) can be inserted into the slot (13). The bottom of the wedge-shaped limiting block (12) is fixedly connected to a first push rod (14), and the bottom end of the first push rod (14) extends into the first horizontal groove above. A second push rod (25) is provided above the second mounting frame (4), and the second push rod (25) can drive the second mounting frame (4) to move downward when the conveying mechanism is working.

2. The conveying unit for high-speed inkjet printing of PCB circuit boards according to claim 1, characterized in that: The first drive mechanism includes a gear (9), which is rotatably mounted on a first rotating shaft (5). A first motor (24) is connected to the rotating shaft of the gear (9). A first rack (10) is fixedly mounted on the first mounting bracket (2). The first rack (10) has the same shape as the first slide groove (3). A second rack (11) is fixedly mounted on the second mounting bracket (4). The second rack (11) has the same shape as the second slide groove (8). The gear (9) can mesh with the first rack (10) and the second rack (11).

3. The conveying unit for high-speed inkjet printing of PCB circuit boards according to claim 1, characterized in that: The conveying mechanism includes a second suction cup (15) and a third driving mechanism; the second suction cup (15) is disposed above the transfer table (1), and the second push rod (25) is fixedly installed on the top of the second suction cup (15); the third driving mechanism is used to drive the second suction cup (15) to move.

4. The conveying unit for high-speed inkjet printing of PCB circuit boards according to claim 3, characterized in that: The third driving mechanism includes a cylinder (16) and a linear motor (17). The output end of the cylinder (16) is fixedly connected to the second suction cup (15). The linear motor (17) is used to drive the cylinder (16) to move the second suction cup (15) in the left and right directions.

5. The conveying unit for high-speed inkjet printing of PCB circuit boards according to claim 1, characterized in that: The first mounting bracket (2) is provided with a third slide groove (18), which is composed of a second arc groove, a vertical groove and two second horizontal grooves. The two second horizontal grooves are arranged opposite to each other and are used to connect the second arc groove and the vertical groove. The second horizontal groove and the vertical groove below are connected to the first slide groove (3). The side of the third slide groove (18) is provided with a third rack rod (19) with the same shape. The third rack rod (19) can mesh with the gear (9).

6. The conveying unit for high-speed inkjet printing of PCB circuit boards according to claim 1, characterized in that: A slide plate (20) is elastically slidably connected to the first mounting bracket (2), and a guide roller (21) is rotatably mounted on the slide plate (20). The guide roller (21) is located directly above the transfer table (1). A wedge block (22) is fixedly connected to the side wall of the slide plate (20), and a push block (23) that can drive it to move upward is provided on the side of the wedge block (22). The push block (23) is fixedly installed on the top of the first suction cup (6).

Images