A pressure self-adapting continuous printing device for intaglio printing

Abstract

This invention discloses a pressure-adaptive continuous printmaking device, belonging to the field of printmaking technology. It includes: two lifting screws, each with a sliding groove on its side plate. The lifting screws are rotatably connected to the sliding grooves, and the two lifting screws rotate synchronously relative to each other, with opposite thread directions. It also includes two screw seats, which are drively connected to the lifting screws and slidably connected to the sliding grooves. A lifting block is fixedly connected between the two screw seats. A printing roller is positioned below the lifting block and is capable of moving up and down. In this invention, the synchronous opposite rotation of the two lifting screws drives the two screw seats to rise and fall synchronously, preventing height discrepancies at both ends of the lifting block. This ensures the printing roller remains parallel to the printing plate, preventing defects such as partial omissions, double printing, or pattern misalignment caused by roller skew, reducing scrap rates, and improving the overall production quality and operational stability of printmaking.

Description

Technical Field

[0001] This invention belongs to the field of printmaking technology, and particularly relates to a pressure-adaptive continuous printmaking apparatus. Background Technology

[0002] Printmaking is a special printing process that first creates raised or hollowed-out patterns on a pre-made printing plate through processes such as carving, etching, corrosion, and plate making. Then, the ink on the surface of the printing plate is transferred to the substrate such as Xuan paper, paper, or fabric by applying pressure. It belongs to the category of combining traditional art printing and industrial printing.

[0003] According to Chinese Patent CN112026349A, a printmaking machine is disclosed. Its structure includes a base box, a bottom pressure plate, a roller, a height adjustment rod, side support plates, and a rotating rod. The side support plates are vertically welded to the upper surface of the base box. The roller is equipped with side support plates at both ends. The paper to be printed is moved between the slots of the glue nozzle and fixed by clamping balls, which plays a role in the reaction force of the extrusion part.

[0004] However, in the above scheme, the height of the roller is adjusted by two independently set height adjustment rods, which has the following disadvantages: when adjusting the height of the roller, it is necessary to rotate the two height adjustment rods separately. If there is a rotation error, the height of the two ends of the roller will be inconsistent, so that the roller cannot be completely parallel to the printing plate and affect the quality of the finished print. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that when adjusting the height of the roller, it is necessary to rotate two height adjustment rods separately. If there is a rotation error, the height of the two ends of the roller will be inconsistent, which will prevent the roller from being completely parallel and attached to the printing plate, thus affecting the quality of the finished print. Therefore, a pressure-adaptive continuous printmaking device is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A pressure-adaptive continuous printing apparatus includes a top box and two side plates, the two side plates being symmetrically fixedly connected to the bottom of the top box, and further includes: Two lifting screws are provided, and a sliding groove is provided on the side plate. The lifting screws are rotatably connected in the sliding groove, and the two lifting screws rotate synchronously relative to each other. The threads of the two lifting screws are opposite. Two lead screw seats are connected to the lifting lead screw via a transmission, and the lead screw seats are slidably connected within a sliding groove; The lifting block is fixedly connected between the two lead screw seats; A printing roller is positioned below the lifting block and is capable of moving up and down.

[0007] Preferred options also include: The sliding block has a moving groove at its bottom, and the sliding block is slidably connected to the moving groove. The printing roller is rotatably connected to the bottom of the sliding block through a rotating seat. Multiple support springs are provided, with one end of each support spring fixedly connected to the top of the sliding block and the other end of each support spring fixedly connected to the top wall of the moving groove. The multiple support springs are arranged in a linear array along the length of the sliding block.

[0008] Preferred options also include: Two third bevel gears are connected by a rotating shaft, which is rotatably mounted in the top box via a mounting bracket. Two fourth bevel gears are symmetrically arranged in the top box. The fourth bevel gears are meshed with one side of the third bevel gear. One end of the lifting screw is connected to the bottom of the fourth bevel gear. The second bevel gear is connected to the outer surface of the rotating shaft; The first bevel gear is meshed with the top of one side of the second bevel gear. The first bevel gear is rotatably connected to the top box via a rotating rod, one end of which extends to the outside of the top box.

[0009] Preferred options also include: Multiple fixed slide rods are provided, with the top of each fixed slide rod connected to the top wall of the moving groove, and the fixed slide rods slidably connected to the sliding block. The support spring is sleeved on the outer surface of the fixed slide rod.

[0010] Preferred options also include: A rotating platform is located below one side of the top box; Multiple connecting plates, the connecting plates being connected to the outer surface of the rotating platform; Multiple pressing papers are provided, and one side of each pressing paper is interchangeably connected to the top surface of the connecting plate.

[0011] Preferred options also include: Multiple placement slots are provided on the top of the connecting plate for placing printing plates.

[0012] Preferred options also include: Multiple fixing plates are fixedly connected to the top of the connecting plate, and the top surface of the fixing plate is provided with an insertion hole; Multiple pressing plates are hinged to the top of a fixed plate. An insertion block is connected to the side of the pressing plate facing the fixed plate, and the insertion block can be inserted into an insertion hole.

[0013] Preferred options also include: A base and a rotating platform are rotatably connected to the top of the base. A drive motor is installed inside the base, and the output shaft of the drive motor is fixedly connected to the bottom of the rotating platform. The movable module is located on the top of the base, away from the rotating platform. A connecting frame is attached to one side of the top box, and the other side of the connecting frame is fixedly connected to the movable module.

[0014] Compared with existing technologies, a pressure-adaptive continuous printing apparatus employing the above-mentioned technical solution has the following beneficial effects: 1. In this invention, the distance between the printing roller and the connecting plate can be adjusted by the cooperation of the lifting screw and the screw seat, thereby flexibly adapting to printing plates of different thicknesses and improving the applicability of the device; furthermore, the synchronous opposite rotation of the two lifting screws can drive the two screw seats to rise and fall synchronously, avoiding height deviation at both ends of the lifting block, ensuring that the printing roller always remains parallel to the printing plate, avoiding defects such as partial missing printing, double printing, or pattern misalignment caused by the skewed printing roller, reducing the scrap rate, and improving the overall production quality and operational stability of printmaking.

[0015] 2. In this invention, during the printing process of pressing the printing roller onto the paper, the support spring can adaptively adjust its height up and down according to the undulations of the printing plate by relying on the extension and contraction of the support spring, thereby changing the pressing force on the printing plate in real time, improving the uniformity of force on all parts of the print, and enhancing the uniformity and quality of the print.

[0016] 3. In this invention, the 180-degree rotation of the rotating table enables dual-station alternating operation, allowing for continuous printing of prints and effectively improving printing efficiency. Relying on the cooperation of the pressing paper, the fixing plate, and the pressing plate, the printing plate and the drawing paper can be quickly positioned and fixed to prevent displacement and misalignment, thereby improving printing accuracy and finished product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the rotating platform, connecting plate, and pressing paper in this invention; Figure 3 This is a schematic diagram of the internal cross-sectional structure of the top box in this invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of section A; Figure 5 This is a three-dimensional disassembled structural diagram of the side plate, lead screw seat, and lifting block in this invention; Figure 6 This is a three-dimensional disassembled structural diagram of the lifting block, sliding block, and printing roller in this invention.

[0018] Legend: 1. Base; 201. Rotating table; 202. Connecting plate; 203. Pressing paper; 204. Placement slot; 205. Fixing plate; 206. Pressing plate; 207. Insertion block; 3. Connecting frame; 4. Moving module; 501. Top box; 502. First bevel gear; 503. Second bevel gear; 504. Side plate; 505. Lead screw seat; 506. Lifting lead screw; 507. Lifting block; 508. Sliding block; 509. Printing roller; 510. Third bevel gear; 511. Fourth bevel gear; 512. Fixed slide bar; 513. Support spring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 and Figures 3-6 The present invention provides a technical solution: A pressure-adaptive continuous printing apparatus includes a top box 501 and two side plates 504, the two side plates 504 being symmetrically fixedly connected to the bottom of the top box 501, and further includes: The base 1 and the rotating platform 201 are rotatably connected to the top of the base 1. The base 1 is equipped with a drive motor, and the output shaft of the drive motor is fixedly connected to the bottom of the rotating platform 201. The drive motor is a stepper motor with a self-locking function. The movable module 4 is located on the top of the base 1 away from the rotating table 201. The movable module 4 includes a movable screw, which is rotatably connected to a groove in the top of the base 1. A movable seat is connected to the outer surface of the movable screw. The top of the movable seat is connected to the bottom of the connecting frame 3. Two guide slide rods are connected in the groove. The guide slide rods are slidably connected to the movable seat. A fixed motor is fixedly installed on one side of the base 1. The output shaft of the fixed motor is connected to one end of the movable screw. The connecting frame 3 is connected to one side of the top box 501, and the other side of the connecting frame 3 is fixedly connected to the movable module 4. The connecting frame 3 has an L-shaped structure. Two lifting screws 506 are provided. A sliding groove is provided on the side plate 504. The lifting screws 506 are rotatably connected in the sliding groove, and the two lifting screws 506 rotate synchronously relative to each other. The threads of the two lifting screws 506 have opposite directions. The sliding groove is located at the center of the side of the side plate 504 and is a rectangular groove. The lifting screws 506 are trapezoidal screws (sliding screws) and can achieve self-locking by relying on thread friction. Two lead screw seats 505 are connected to the lifting lead screw 506. The lead screw seats 505 are slidably connected in the sliding groove. The cross-sectional shape of the lead screw seats 505 is rectangular, and the two sides of the lead screw seats 505 are in contact with the inner wall of the sliding groove. The lifting block 507 is fixedly connected between the two lead screw seats 505; A printing roller 509 is disposed below the lifting block 507, and the printing roller 509 is capable of moving up and down. The sliding block 508 is slidably connected to the sliding block 508 in the bottom of the lifting block 507. The printing roller 509 is rotatably connected to the bottom of the sliding block 508 through a rotating seat. The sliding block 508 and the sliding block 508 are both rectangular in cross-sectional shape, and the outer peripheral surface of the sliding block 508 is in contact with the side wall of the sliding block 508. Multiple support springs 513 are provided. One end of each support spring 513 is fixedly connected to the top of the sliding block 508, and the other end of each support spring 513 is fixedly connected to the top wall of the moving groove. The multiple support springs 513 are arranged in a linear array along the length of the sliding block 508, and the support springs 513 are distributed on the transverse centerline of the top surface of the sliding block 508. Two third bevel gears 510 are connected by a rotating shaft, which is rotatably mounted in the top box 501 via a mounting bracket; Two fourth bevel gears 511 are symmetrically arranged inside the top box 501. The fourth bevel gears 511 are meshed with one side of the third bevel gear 510. One end of the lifting screw 506 is connected to the bottom of the fourth bevel gears 511. The lifting screw 506 is unthreaded and extends into the top box 501 through the round holes opened at the bottom of the top box 501 and the top of the side plate 504. The second bevel gear 503 is connected to the outer surface of the rotating shaft; The first bevel gear 502 is meshed with the top of the second bevel gear 503 on one side. The first bevel gear 502 is rotatably connected to the top box 501 through a rotating rod. One end of the rotating rod extends to the outside of the top box 501. A wheel is connected to the top of the rotating rod to facilitate the operator to rotate the rotating rod. Multiple fixed slide rods 512 are provided, with the top of each fixed slide rod 512 connected to the top wall of the moving groove. The fixed slide rods 512 are slidably connected to the sliding block 508. The supporting spring 513 is sleeved on the outer surface of the fixed slide rod 512. The top of the sliding block 508 is provided with multiple round holes, and the fixed slide rods 512 are slidably connected to the round holes.

[0021] The specific usage method and working principle are as follows: The staff places the printing plate and the drawing paper in the correct position on the connecting plate 202. The staff starts the drive motor, which drives the rotating table 201 to rotate 180 degrees. The rotating table 201 rotates the printing plate and the drawing paper to the top box 501 through the connecting plate 202. Then the motor is locked and stopped, and the printing plate and the drawing paper are facing the top box 501. The operator activates the moving module 4, which moves the connecting frame 3 towards the connecting plate 202. The connecting frame 3, through the top box 501, moves the two side plates 504 synchronously. The two side plates 504, through the lead screw seat 505, lifting block 507, and sliding block 508, move the printing roller 509 towards the connecting plate 202. The printing roller 509 applies pressure to the drawing paper through the pressing paper 203, ensuring a tight fit between the drawing paper and the printing plate, thus achieving the printing of the print. During this process, due to the unevenness of the printing plate, the pressure exerted by the printing plate on the printing roller 509 will also change. If a convex area is encountered, the printing roller 509, under pressure, moves the sliding block 508 upward, which in turn causes multiple support springs 513 to contract. If a concave area is encountered, the contracted support springs 513, through the sliding block 508, move the printing roller 509 downward. This adaptively changes the pressure of the printing roller 509 on the printing plate, ensuring uniform pressure throughout the printing process and improving the quality of the finished print. When the printing plate is thick, the operator rotates the rotary wheel, which drives the rotating rod to rotate. The rotating rod drives the first bevel gear 502 to rotate, which in turn drives the second bevel gear 503 to rotate. The second bevel gear 503 drives two third bevel gears 510 to rotate synchronously via a rotating shaft. The two third bevel gears 510 drive two fourth bevel gears 511 to rotate synchronously in opposite directions, causing the two lifting screws 506 to rotate synchronously in opposite directions. The lifting screws 506 drive the screw seats 505 to move upward, and the two screw seats 505 drive the lifting blocks 507 to move upward. The lifting blocks 507 drive the printing roller 509 to move upward via the sliding block 508, so that the printing roller 509 is in contact with the connecting plate 2. The increased distance between 02 allows the printing roller 509 to fit thicker printing plates. When the printing plate is thinner, the operator rotates the wheel in the opposite direction. After mechanical transmission, the printing roller 509 moves downward, reducing the distance between the printing roller 509 and the connecting plate 202, allowing the printing roller 509 to fit thinner printing plates. Since the two lifting screws 506 rotate synchronously in opposite directions, and since the threads of the two lifting screws 506 rotate in opposite directions, the two lifting screws 506 drive the two screw seats 505 to lift synchronously, avoiding height differences at both ends of the lifting block 507. This ensures that the printing roller 509 remains parallel to the printing plate, improving the quality of the print.

[0022] Please see Figures 1-2 It also includes: The rotating platform 201 is located below one side of the top box 501; Two connecting plates 202 are connected to the outer surface of the rotating platform 201. The connecting plates 202 are rectangular and their bottoms are in contact with the top of the base 1. Two pressing papers 203 are provided. One side of each pressing paper 203 is interchangeably connected to the top surface of the connecting plate 202. One side of the pressing paper 203 can be glued to the top surface of the connecting plate 202, and the other end of the pressing paper 203 is a free end that can move relatively freely. Two placement slots 204 are provided on the top of the connecting plate 202 for placing printing plates. The cross-sectional shape of the placement slots 204 is rectangular. When placing the printing plates, filler can be added between the printing plates and the walls of the placement slots 204 to prevent the printing plates from moving. Two fixing plates 205 are fixedly connected to the top of the connecting plate 202, and the top surface of the fixing plate 205 is provided with an insertion hole; Two pressing plates 206 are hinged to the top of the fixing plate 205. An insertion block 207 is connected to the side of the pressing plate 206 facing the fixing plate 205. The insertion block 207 can be inserted into the insertion hole. The insertion block 207 is located on the pressing plate 206 near the side, and the position of the insertion hole corresponds to it, so as to avoid affecting the pressing paper 203 when the insertion block 207 is connected to the insertion hole.

[0023] The specific usage method and working principle are as follows: When the connecting plate 202 is on the side away from the top box 501, the staff lifts the covering paper 203 to expose the placement groove 204, then places the printing plate in the placement groove 204, and limits the printing plate with the filler. The staff places the drawing paper on the top surface of the printing plate. After that, the staff flips the covering paper 203 so that the covering paper 203 adheres to the top surface of the drawing paper. Afterwards, the staff will pass the other side of the pressing paper 203 through the gap between the fixing plate 205 and the pressing plate 206, so that the pressing paper 203 is flat and adheres to the drawing paper and plays a limiting role. Then, the staff will rotate the pressing plate 206 towards the placement groove 204. Through the insertion connection between the insertion block 207 and the insertion hole, the pressing plate 206 and the fixing plate 205 will limit and press the pressing paper 203. Then, the drive motor drives the rotary table 201 to rotate 180 degrees, causing the connecting plate 202 to rotate the printing plate and the drawing paper to the direction of the printing roller 509. The printing of the print is completed by the movement of the printing roller 509. Afterward, the drive motor continues to drive the connecting plate 202 to rotate 180 degrees through the rotary table 201, causing the connecting plate 202 to return to its initial position. At this time, the operator flips the pressing plate 206 upward and lifts the covering paper 203. If the printing plate needs to be replaced, the operator removes the printing plate and the drawing paper together for replacement. If the printing plate does not need to be replaced, only the drawing paper needs to be replaced. By rotating the rotary table 201 180 degrees, the two connecting plates 202 drive the printing plate and the drawing paper to alternate between two workstations, realizing continuous printing of the print and improving printing efficiency.

[0024] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pressure-adaptive continuous printing apparatus, comprising a top box (501) and two side plates (504), the two side plates (504) being symmetrically fixedly connected to the bottom of the top box (501), characterized in that, Also includes: Two lifting screws (506) are provided. The side plate (504) is provided with a sliding groove. The lifting screws (506) are rotatably connected in the sliding groove. The two lifting screws (506) rotate synchronously relative to each other. The threads of the two lifting screws (506) are opposite. Two lead screw seats (505) are connected to the lifting lead screw (506) in a transmission connection, and the lead screw seats (505) are slidably connected in the sliding groove; The lifting block (507) is fixedly connected between the two lead screw seats (505); A printing roller (509) is located below a lifting block (507) and is capable of moving up and down.

2. The pressure-adaptive continuous printing apparatus according to claim 1, characterized in that, Also includes: The sliding block (508) has a moving groove at the bottom of the lifting block (507), and the sliding block (508) is slidably connected in the moving groove. The printing roller (509) is rotatably connected to the bottom of the sliding block (508) through a rotating seat. Multiple support springs (513) are provided. One end of each support spring (513) is fixedly connected to the top of the sliding block (508), and the other end of each support spring (513) is fixedly connected to the top wall of the moving groove. The multiple support springs (513) are arranged in a linear array along the length of the sliding block (508).

3. The pressure-adaptive continuous printing apparatus according to claim 1, characterized in that, Also includes: Two third bevel gears (510) are connected by a rotating shaft, which is rotatably mounted in the top box (501) via a mounting bracket; Two fourth bevel gears (511) are symmetrically arranged in the top box (501). The fourth bevel gears (511) are meshed with one side of the third bevel gear (510). One end of the lifting screw (506) is connected to the bottom of the fourth bevel gears (511). The second bevel gear (503) is connected to the outer surface of the rotating shaft; The first bevel gear (502) is meshed with the top of the second bevel gear (503) on one side. The first bevel gear (502) is rotatably connected to the top box (501) through a rotating rod, one end of which extends to the outside of the top box (501).

4. The pressure-adaptive continuous printing apparatus according to claim 2, characterized in that, Also includes: Multiple fixed slide rods (512) are provided, the top of which is connected to the top wall of the moving groove. The fixed slide rods (512) are slidably connected to the sliding block (508). The support spring (513) is sleeved on the outer surface of the fixed slide rods (512).

5. The pressure-adaptive continuous printing apparatus according to claim 1, characterized in that, Also includes: A rotating platform (201) is located below one side of the top box (501); Multiple connecting plates (202) are connected to the outer surface of the rotating table (201); Multiple laminated paper (203) are interchangeably connected to the top surface of the connecting plate (202) on one side.

6. The pressure-adaptive continuous printing apparatus according to claim 5, characterized in that, Also includes: Multiple placement slots (204) are provided on the top of the connecting plate (202) for placing printing plates.

7. The pressure-adaptive continuous printing apparatus according to claim 5, characterized in that, Also includes: Multiple fixing plates (205) are fixedly connected to the top of the connecting plate (202), and the top surface of the fixing plate (205) is provided with insertion holes; Multiple pressing plates (206) are hinged to the top of a fixing plate (205). An insertion block (207) is connected to the side of the pressing plate (206) facing the fixing plate (205). The insertion block (207) can be inserted into an insertion hole.

8. The pressure-adaptive continuous printing apparatus according to claim 5, characterized in that, Also includes: The base (1) and the rotating platform (201) are rotatably connected to the top of the base (1). The base (1) is equipped with a drive motor, and the output shaft of the drive motor is fixedly connected to the bottom of the rotating platform (201). The movable module (4) is located on the top of the base (1) on the side away from the rotating platform (201); The connecting frame (3) is connected to one side of the top box (501), and the other side of the connecting frame (3) is fixedly connected to the moving module (4).

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