A printing positioning jig

Abstract

The utility model discloses a kind of printing positioning fixture, including mounting frame, be equipped with screw rod, first mounting seat and second mounting seat on mounting frame, first mounting seat and second mounting seat are respectively fixed at the both ends of mounting frame, screw rod is respectively connected with first mounting seat and second mounting seat rotation, screw rod is equipped with nut seat and clamping plate, nut seat is fixedly connected with clamping plate and is connected with screw rod by thread, mounting frame movably is equipped with support seat, support seat is equipped with motor, cleaning roller and connecting shaft, motor is fixedly connected with support seat, cleaning roller is rotatably connected with support seat and is fixedly connected with motor output shaft, connecting shaft is movably connected with support seat, connecting shaft rotatably is equipped with multiple pressure wheels, gap exists between pressure wheel, gap exists between pressure wheel and cleaning roller, pressure wheel bottom height is consistent with cleaning roller bottom height, mounting frame is fixedly equipped with pneumatic device, the utility model solves the problem of traditional printing device in placing positioning accuracy, printing positioning correction before and cleaning to printing material.

Description

Technical Field

[0001] This utility model relates to the field of printing positioning technology, and more specifically, to a printing positioning fixture. Background Technology

[0002] The modern printing industry has developed into a high-tech intensive industry integrating optics, mechanics, electronics, chemistry, and materials science. Especially in the fields of high-end packaging, electronic product windows, and anti-counterfeiting printing, the precision of printing pattern registration and the accurate alignment of subsequent surface finishing processes such as hot stamping, embossing, and die-cutting are required. Traditional printing relies on manual alignment by operators and mechanical precision, which has some shortcomings and cannot meet the needs of modern precision printing.

[0003] The primary problem is that traditional printing equipment lacks a placement and positioning fixture. To ensure a certain level of accuracy, operators are forced to slow down the material feeding speed and carefully align it with a visual mark. This prevents the actual speed of the printing press from increasing, artificially slowing down the entire production line. Operators are required to perform highly repetitive and precise placement actions like robots, making them prone to errors due to fatigue. Furthermore, the manual placement of the substrate on the conveyor belt introduces random errors in placement each time, making production quality overly dependent on the stability of the operators.

[0004] More notably, traditional printing equipment lacks a fixture for cleaning the substrate. Non-polar contaminants such as oil stains, fingerprints, and release agents on the substrate surface can form a protective film, preventing direct contact between the ink and the substrate surface. This results in a significant decrease in ink adhesion, making the ink layer prone to peeling off after printing or in subsequent processes. If the contaminants are soft fibers or sticky stains, they may adhere to the printing plate or screen, and then continuously transfer excess ink or incorrect textures to subsequent substrates during printing transfer.

[0005] Crucially, traditional printing equipment lacks positioning and straightening fixtures. When the conveyor belt accelerates, decelerates, or vibrates, the unclamped substrate may slide or rotate, causing its actual position upon reaching the printing unit to differ from its expected position. Without a final straightening mechanism, the printing unit will print in this incorrect position, which is one of the main reasons for misregistration in multi-color printing. Moreover, this error is random, difficult to predict, and difficult to compensate for. To prevent the substrate from going out of control during high-speed transport, the equipment can only operate at a relatively conservative low speed, reducing production efficiency. Utility Model Content

[0006] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a printing positioning fixture to solve the technical problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a printing positioning fixture, comprising a mounting frame, wherein the mounting frame is provided with a screw, a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are respectively fixed at both ends of the mounting frame, the screw is rotatably connected to the first mounting seat and the second mounting seat respectively, the screw is provided with a nut seat and a clamping plate, the nut seat is fixedly connected to the clamping plate and is threadedly connected to the screw, the mounting frame is movably provided with a support seat, the support seat is provided with a motor, a cleaning roller and a connecting shaft, the motor is fixedly connected to the support seat, the cleaning roller is rotatably connected to the support seat and fixedly connected to the motor output shaft, the connecting shaft is movably connected to the support seat, the connecting shaft is rotatably provided with multiple pressure rollers, there are gaps between the pressure rollers, there are gaps between the pressure rollers and the cleaning roller, the bottom height of the pressure rollers is the same as the bottom height of the cleaning roller, and the mounting frame is fixedly provided with a pneumatic device.

[0008] The present invention is further configured such that the pneumatic device includes a first cylinder and a second cylinder, the first cylinder and the second cylinder are respectively fixedly connected to both ends of the mounting frame, the first cylinder is vertically arranged, the second cylinder is horizontally arranged, the first cylinder is fixedly provided with a positioning plate, and the second cylinder is fixedly provided with a push plate, so as to ensure positioning before printing.

[0009] The present invention is further configured such that there are two nut seats and two clamping plates, and the two nut seats are arranged in opposite directions to ensure the adjustment of the placement position of the printing substrate.

[0010] The present invention is further configured such that the support base has multiple adjustment holes, each adjustment hole has an adjustment post, and the adjustment post passes through the mounting frame and is inserted into the adjustment hole, thereby improving the adaptability to substrates of different thicknesses.

[0011] The present invention is further configured such that the support base has a placement groove and a slot, the placement groove is rotatably connected to the connecting shaft, the slot is slidably provided with a plug, and the plug is in contact with the connecting shaft, thereby improving the convenience of pressure installation.

[0012] The present invention is further configured such that the positioning plate has a through hole and a square groove, the square groove has an extension block, the extension block is inserted into the square groove, the through hole has an insertion rod, and the insertion rod is inserted into the extension block and the positioning plate respectively, thereby improving the adaptability to substrates of different sizes.

[0013] The present invention is further configured such that the first mounting base and the second mounting base are fixedly provided with guide rods, and the guide rods are slidably connected to the nut seat, thereby improving the stability of the movement of the nut seat.

[0014] The utility model is further configured such that the mounting bracket is fixedly equipped with a detector assembly, which ensures the positioning of the substrate in the printing unit.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides a printing positioning fixture, which has the following beneficial effects: 1. A complete substrate initial placement and positioning device is formed by the tight cooperation between the screw, the first mounting seat, the second mounting seat, the nut seat, and the clamping plate. By rotating the screw, the nut seat moves, and the spacing between the clamping plates matches the width of the substrate, ensuring that the substrate is initially placed in the preset position. The operator does not need to perform precise alignment each time; they only need to press the substrate against the positioning device. This greatly shortens the loading and unloading time per operation, allowing the equipment to run at a higher speed, significantly improving overall production efficiency, reducing material loss, avoiding paper waste and printing plate wear caused by positioning errors, and controlling production costs.

[0016] 2. Through the close cooperation between the support base, motor, cleaning roller, connecting shaft, and pressure roller, a complete substrate surface cleaning device is formed. The motor drives the cleaning roller to rotate and clean the substrate surface. The connecting shaft and pressure roller can prevent the substrate from sticking to the cleaning roller and lifting up. It can effectively remove non-polar contaminants such as release agent, oil stains, and fingerprints that are difficult to see with the naked eye, ensuring that the ink and the substrate surface achieve full and firm contact, fundamentally avoiding poor adhesion, ink layer peeling (and delamination problems that occur in subsequent lamination and varnishing processes).

[0017] 3. A complete correction and positioning device is formed by the close cooperation between the first cylinder, the second cylinder, the positioning plate, and the push plate. The extension and retraction of the first and second cylinders make the push plate push the substrate into close contact with the positioning plate, thereby correcting the position of the substrate. This solves the problem of substrate displacement and rotation caused by factors such as conveyor belt slippage, vibration, and airflow. Precise pre-press calibration corrects minor offsets generated during material conveying, ensuring complete uniformity of the printing reference, significantly reducing registration error, reducing reprints and re-prints caused by offset, and improving the first-pass yield. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a printing positioning fixture according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of a printing positioning fixture according to the present invention. Figure 2 ; Figure 3 This is an exploded view showing the connection between the support base, mounting bracket, and adjusting column in this utility model. Figure 4This is an exploded view showing the connection between the support base, connecting shaft, and insert block in this utility model; Figure 5 This is an exploded view showing the connection between the positioning plate, the insertion rod, and the extension block in this utility model.

[0019] In the diagram: 1. Mounting bracket; 2. Screw; 3. First mounting seat; 4. Second mounting seat; 5. Nut seat; 6. Clamping plate; 7. Support seat; 8. Motor; 9. Cleaning roller; 10. Connecting shaft; 11. Pressure roller; 12. First cylinder; 13. Second cylinder; 14. Positioning plate; 15. Push plate; 16. Adjustment hole; 17. Adjustment column; 18. Placement slot; 19. Slot; 20. Insertion block; 21. Through hole; 22. Square slot; 23. Extension block; 24. Insertion rod; 25. Guide rod; 26. Detector assembly. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] Please see Figures 1-5 A printing positioning fixture includes a mounting frame 1. The mounting frame 1 is provided with a screw 2, a first mounting seat 3, and a second mounting seat 4. The first mounting seat 3 and the second mounting seat 4 are respectively fixed at both ends of the mounting frame 1. The screw 2 is rotatably connected to the first mounting seat 3 and the second mounting seat 4 respectively. The screw 2 is provided with a nut seat 5 and a clamping plate 6. The nut seat 5 is fixedly connected to the clamping plate 6 and is threadedly connected to the screw 2. The mounting frame 1 is movably provided with a support seat 7. The support seat 7 is provided with a motor 8, a cleaning roller 9, and a connecting shaft 10. The motor 8 is fixedly connected to the support seat 7. The cleaning roller 9 is rotatably connected to the support seat 7 and fixedly connected to the output shaft of the motor 8. The connecting shaft 10 is movably connected to the support seat 7. The connecting shaft 10 is rotatably provided with multiple pressure rollers 11. There are gaps between the pressure rollers 11 and between the pressure rollers 11 and the cleaning roller 9. The bottom height of the pressure rollers 11 is the same as the bottom height of the cleaning roller 9. The mounting frame 1 is fixedly provided with a pneumatic device.

[0024] In a further embodiment of this application, the pneumatic device includes a first cylinder 12 and a second cylinder 13. The first cylinder 12 and the second cylinder 13 are respectively fixedly connected to both ends of the mounting frame 1. The first cylinder 12 is vertically arranged, and the second cylinder 13 is horizontally arranged. The first cylinder 12 is fixedly provided with a positioning plate 14, and the second cylinder 13 is fixedly provided with a push plate 15. When the first cylinder 12 retracts, the positioning plate 14 descends. After the positioning plate 14 descends, the second cylinder 13 extends, causing the push plate 15 to push the substrate and make the other end of the substrate come into close contact with the positioning plate 14, thereby correcting the position of the substrate and positioning it directly below the printing unit.

[0025] In a further embodiment of this application, there are two nut seats 5 and two clamping plates 6, and the two nut seats 5 are arranged in opposite directions. The screw 2 is rotated around the first mounting base 3 and the second mounting base 4 to make the nut seats 5 move away from or closer to each other, so that the spacing of the clamping plates 6 is basically consistent with the width of the substrate, ensuring that the position and direction of the substrate are consistent with the preset, and reducing the amount of adjustment required for subsequent adjustments.

[0026] In a further embodiment of this application, the support base 7 is provided with a plurality of adjustment holes 16, and the adjustment holes 16 are provided with adjustment posts 17. The adjustment posts 17 pass through the mounting frame 1 and are inserted into the adjustment holes. Then, the support base 7 is adjusted to a suitable height, and the adjustment posts 17 are inserted into the adjustment holes 16 to complete the adjustment of the height of the cleaning roller 9 for substrates of different thicknesses.

[0027] In a further embodiment of this application, the support base 7 is provided with a placement groove 18 and a slot 19. The placement groove 18 is rotatably connected to the connecting shaft 10, and the slot 19 is slidably provided with a plug 20. The plug 20 is in contact with the connecting shaft 10. The connecting shaft 10 is placed in the placement groove 18, and then the plug 20 is inserted into the slot 19 to prevent the connecting shaft 10 from falling off, thereby improving the ease of installation of the pressure roller 11.

[0028] In a further embodiment of this application, the positioning plate 14 has a through hole 21 and a square groove 22. The square groove 22 is provided with an extension block 23, which is inserted into the square groove 22. The through hole 21 is provided with a rod 24, which is inserted into the extension block 23 and the positioning plate 14 respectively. If the substrate is small, the push plate 15 will push it out of place. At this time, the extension block 23 needs to be inserted into the square groove 22 and the rod 24 needs to be inserted into the through hole 21 to connect the extension block 23 with the positioning plate 14, so that the push plate 15 can correct the substrate to the correct position.

[0029] In a further embodiment of this application, a guide rod 25 is fixedly provided on the first mounting base 3 and the second mounting base 4. The guide rod 25 is slidably connected to the nut seat 5, and the guide rod 25 ensures the stability of the movement of the nut seat 5.

[0030] In a further embodiment of this application, the mounting frame 1 is fixedly provided with a detector assembly 26, which can detect the arrival of the substrate in the working area and drive the first cylinder 12 and the second cylinder 13 to work.

[0031] In this embodiment, when the device is needed, the mounting bracket 1 is fixed on both sides of the printing device and the positioning plate 14 is located on one side of the printing unit in the printing device. The screw 2 is rotated around the first mounting base 3 and the second mounting base 4 to make the nut seats 5 move away from or closer to each other, so that the spacing of the clamping plates 6 is basically consistent with the width of the substrate. The connecting shaft 10 is placed in the placement groove 18, and then the insert block 20 is inserted into the slot 19 to prevent the connecting shaft 10 from falling off. Then, the support base 7 is adjusted to a suitable height, and the adjusting column 17 is inserted into the adjusting hole 16 to complete the height adjustment of the cleaning roller 9 for substrates of different thicknesses. Then, the motor 8 is started to make the cleaning roller 9 rotate continuously around the support base 7, and the substrate is placed on the conveying device of the printing device and between the clamping plates 6. The clamping plates 6 restrict the correctness of the initial placement of the substrate, ensuring that the position and direction of the substrate are consistent with the preset. The guide rod 25 ensures the stability of the movement of the nut seat 5.

[0032] More specifically, after placement, when the upper surface of the substrate passes the cleaning roller 9, surface dirt and impurities are removed. To prevent the substrate from lifting due to excessive stickiness from the cleaning roller 9, when the substrate passes the pressure roller 11, the pressure roller 11 rotates on the connecting shaft 10 due to friction with the substrate, providing pressure to the substrate and preventing it from lifting and being rolled up by the cleaning roller 9. The cleaned substrate continues to move, and when the detector assembly 26 detects that the substrate has moved below the positioning plate 14, it will stop the transport device of the printing equipment. When the first cylinder 12 retracts, the positioning plate 14 descends. After the positioning plate 14 descends, the second cylinder 13 extends, causing the push plate 15 to push the substrate and make the other end of the substrate come into close contact with the positioning plate 14, thus correcting the position of the substrate. Then the printing unit presses down to print. If the substrate is small, the push plate 15 will push it out of place. In this case, the extension block 23 needs to be inserted into the square slot 22 and the insertion rod 24 needs to be inserted into the through hole 21. The extension block 23 is connected to the positioning plate 14 so that the push plate 15 can correct the substrate to the correct position.

[0033] In summary, when using or operating the overall equipment: When the equipment needs to be used, fix the mounting bracket 1 on both sides of the printing device and position the positioning plate 14 on one side of the printing unit in the printing device. Rotate the screw 2 around the first mounting base 3 and the second mounting base 4 to make the nut seats 5 move away from or closer to each other, so that the spacing of the clamping plates 6 is basically consistent with the width of the substrate. Place the connecting shaft 10 in the placement groove 18, and then insert the insert block 20 into the slot 19 to prevent the connecting shaft 10 from falling off. Next, adjust the support base 7 to a suitable height, insert the adjusting column 17 into the adjusting hole 16, and complete the height adjustment of the cleaning roller 9 for substrates of different thicknesses. Then start the motor 8 to make the cleaning roller 9 rotate continuously around the support base 7, and place the substrate on the conveying device of the printing equipment and between the clamping plates 6. The clamping plates 6 restrict the correctness of the initial placement of the substrate, ensuring that the position and direction of the substrate are consistent with the preset. The guide rod 25 ensures the stability of the movement of the nut seat 5.

[0034] After placement, when the upper surface of the substrate passes the cleaning roller 9, surface dirt and impurities are removed. To prevent the substrate from lifting due to excessive stickiness from the cleaning roller 9, the substrate passes the pressure roller 11. The pressure roller 11 rotates on the connecting shaft 10 due to friction with the substrate, providing pressure to the substrate and preventing it from being lifted by the cleaning roller 9. The cleaned substrate continues to move. When the detector assembly 26 detects that the substrate has moved below the positioning plate 14, it stops the transport device of the printing equipment. When cylinder 12 contracts, positioning plate 14 descends. After positioning plate 14 descends, second cylinder 13 extends, causing push plate 15 to push the substrate and make the other end of the substrate come into close contact with positioning plate 14, thus correcting the position of the substrate. Then, printing unit presses down to print. If the substrate is small, push plate 15 may push it out of place. In this case, extension block 23 needs to be inserted into square slot 22 and insert rod 24 into through hole 21. Extension block 23 is connected to positioning plate 14 so that push plate 15 can correct the substrate to the correct position.

[0035] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A printing positioning fixture, comprising a mounting frame (1), characterized in that: The mounting frame (1) is provided with a screw (2), a first mounting seat (3), and a second mounting seat (4). The first mounting seat (3) and the second mounting seat (4) are respectively fixed at both ends of the mounting frame (1). The screw (2) is rotatably connected to the first mounting seat (3) and the second mounting seat (4). The screw (2) is provided with a nut seat (5) and a clamping plate (6). The nut seat (5) is fixedly connected to the clamping plate (6) and is threadedly connected to the screw (2). The mounting frame (1) is movably provided with a support seat (7). The support seat (7) is provided with a motor (8). The cleaning roller (9) and the connecting shaft (10) are provided. The motor (8) is fixedly connected to the support base (7). The cleaning roller (9) is rotatably connected to the support base (7) and fixedly connected to the output shaft of the motor (8). The connecting shaft (10) is movably connected to the support base (7). The connecting shaft (10) is rotatably provided with multiple pressure rollers (11). There is a gap between the pressure rollers (11) and between the pressure rollers (11) and the cleaning roller (9). The bottom height of the pressure rollers (11) is the same as the bottom height of the cleaning roller (9). The mounting frame (1) is fixedly provided with a pneumatic device.

2. The printing positioning fixture according to claim 1, characterized in that: The pneumatic device includes a first cylinder (12) and a second cylinder (13). The first cylinder (12) and the second cylinder (13) are respectively fixedly connected to both ends of the mounting bracket (1). The first cylinder (12) is vertically arranged, and the second cylinder (13) is horizontally arranged. The first cylinder (12) is fixedly provided with a positioning plate (14), and the second cylinder (13) is fixedly provided with a push plate (15).

3. A printing positioning fixture according to claim 1, characterized in that: Both the nut seat (5) and the clamp (6) are provided in pairs, and the two nut seats (5) are arranged in opposite directions.

4. A printing positioning fixture according to claim 1, characterized in that: The support base (7) has multiple adjustment holes (16), and each adjustment hole (16) has an adjustment post (17). The adjustment post (17) passes through the mounting bracket (1) and is inserted into the adjustment hole.

5. A printing positioning fixture according to claim 1, characterized in that: The support base (7) has a placement groove (18) and a slot (19). The placement groove (18) is rotatably connected to the connecting shaft (10). The slot (19) has a sliding insert (20) which is in contact with the connecting shaft (10).

6. A printing positioning fixture according to claim 2, characterized in that: The positioning plate (14) has a through hole (21) and a square groove (22). The square groove (22) has an extension block (23) which is inserted into the square groove (22). The through hole (21) has a plug rod (24) which is inserted into the extension block (23) and the positioning plate (14) respectively.

7. A printing positioning fixture according to claim 3, characterized in that: The first mounting base (3) and the second mounting base (4) are fixedly provided with guide rods (25), and the guide rods (25) are slidably connected to the nut seat (5).

8. A printing positioning fixture according to claim 1, characterized in that: The mounting bracket (1) is fixedly equipped with a detector assembly (26).

Images