Correcting and positioning device of printing machine

Abstract

The utility model provides a correcting and positioning device of a printing machine, belongs to the technical field of printing machines, and solves the problems that only the left side and the right side of a printing piece can be corrected, the front and the back of the printing piece cannot be corrected in the placing process, the front and the back of the printing piece can deviate, and printing errors are caused. The correcting and positioning device of the printing machine comprises a placing plate, a support is fixed to the placing plate, an air cylinder is fixed to the support, the printing machine is fixed to the output shaft end of the air cylinder, two push plates are connected to the placing plate in a sliding mode, two sliding openings are formed in the push plates, two fixing strips are connected to the sliding openings in a sliding mode, and a driving mechanism is arranged between the push plates and the fixing strips. The paper board correcting device has the advantages that the front, back, left and right of a printed paper board can be corrected, and printing errors are prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing machines and relates to a correction and positioning device, in particular to a correction and positioning device for a printing machine. Background Art

[0002] Modern printing presses are generally composed of mechanisms such as plate loading, inking, pressing, paper feeding, and folding. Its working principle is: first, the text and image to be printed are made into a printing plate, which is then installed on the printing press. Then, ink is applied to the places where the text and image are on the printing plate by hand or by the printing press, and then directly or indirectly transferred to paper or other substrates such as textiles, metal plates, plastics, leather, wood boards, glass, and ceramics, thereby replicating the same printed product as the printing plate.

[0003] After searching, it is found that a printing press positioning mechanism is disclosed in Chinese patent documents [Application No.: 202320493288.5; Publication No.: CN 219634779 U]. This printing press positioning mechanism includes a mounting plate, a mounting slot is provided on the mounting plate, an electric telescopic rod is installed inside the mounting slot, the electric telescopic rod is used to drive the connecting plate to move, and the electric telescopic rod is detachably connected to one side of the connecting plate through a first bolt. The printing press positioning mechanism is installed on the printing press through the mounting plate. By controlling the extension and retraction of the electric telescopic rod, the connecting plate and the positioning plate can be driven to extend and retract. The sound-absorbing panels passing through are positioned by the two positioning plates, so that the position of the sound-absorbing panels is automatically corrected. The sound-absorbing panels with large angle offset can be positioned by using the thrust of the electric telescopic rod, which is convenient for subsequent printing. A buffer spring is arranged between the connecting plate and the positioning plate, and the buffer spring is extended and retracted to transmit the pressure to the connecting plate for buffering, thereby achieving a good buffering effect and preventing the sound-absorbing panels from being damaged by excessive extrusion pressure.

[0004] Although the connecting plate and positioning plate disclosed in this patent can position the printed parts with large angle offsets to facilitate subsequent printing, a buffer spring is arranged between the connecting plate and the positioning plate. The buffer spring expands and contracts and transmits pressure to the connecting plate for buffering, thereby achieving a good buffering effect and preventing the printed parts from being damaged by excessive extrusion pressure. However, only the left and right sides of the printed parts can be corrected. During the placement process, the printed parts cannot be corrected front and back, and offsets may occur front and back, resulting in printing errors. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the prior art and propose a correction and positioning device for a printing press. The technical problem to be solved by the utility model is: how to correct the printed cardboard in all directions to prevent printing errors.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A correction and positioning device for a printing press comprises a placement plate, a bracket is fixed on the placement plate, a cylinder is fixed on the bracket, a printing press is fixed on the output shaft end of the cylinder, two push plates are slidably connected to the placement plate, two sliding openings are provided on the push plate, two fixing bars are slidably connected to the sliding openings, and a driving mechanism is provided between the push plates and the fixing bars.

[0008] The working principle of the utility model is as follows: a cardboard to be printed is placed on a placing plate, a push plate is moved to make the push plate fit with the front and back sides of the cardboard, the front and back of the cardboard are corrected, and then two fixed strips are moved by a driving mechanism to correct the left and right of the cardboard to avoid the cardboard from deflecting during the movement, so that the cardboard is corrected in multiple directions, and then the cylinder is started to move the printing press downward to print the cardboard.

[0009] The placement plate is provided with two slide grooves, a motor 1 is fixed on the placement plate, a bidirectional threaded rod extending into the slide groove is fixed to the output shaft end of the motor 1, a threaded block is threadedly connected to the bidirectional threaded rod, and the threaded block is fixedly connected to the push plate.

[0010] By adopting the above structure, by installing the bidirectional threaded rod and the threaded block, starting the motor 1, driving the bidirectional threaded rod to rotate, and the threaded block to move, the two push plates are driven to move in corresponding directions to correct the cardboard front and back.

[0011] A plurality of balls are rotatably connected to the placement plate.

[0012] The above structure is adopted, and by installing the ball bearings, it is convenient for the cardboard to move on the placement plate during the pushing process, and the friction is reduced to avoid damage to the cardboard.

[0013] The driving mechanism includes a mounting groove opened inside the push plate, a second motor is fixed on the push plate, a rotating column extending into the mounting groove is fixed on the output shaft end of the second motor, a gear is fixed on the rotating column, two racks are slidably connected in the mounting groove, the two racks are respectively meshed with the gears, the racks are fixedly connected to the fixed bar, one of the racks is located on the upper side of the gear, and the other rack is located on the lower side of the gear.

[0014] By adopting the above structure, by installing the rack and the gear, starting the second motor, driving the rotating column to rotate, the rotating column drives the gear to rotate, and the two racks meshing with the gear drive the fixed bar to move in the corresponding direction, so as to correct the left and right of the cardboard, align the cardboard with the printing machine, and prevent printing errors.

[0015] Two "T"-shaped moving grooves are provided in the installation groove, and a "T"-shaped moving block is slidably connected in the moving groove, and the moving block is fixedly connected to the rack.

[0016] By adopting the above structure, the installation and movement of the rack are realized by opening the moving groove, so that the fixed bar moves smoothly and the paperboard is corrected.

[0017] A circular opening is provided in the threaded block, a turntable is rotatably connected in the circular opening, an arc-shaped groove is provided in the circular opening, a notch is provided in the outer wall of the turntable, an arc-shaped column is slidably connected in the notch, a spring is fixed in the notch, and the other end of the spring is fixedly connected to the arc-shaped column.

[0018] By adopting the above structure, by installing the arc column and opening the arc groove, when the two-way threaded rod drives the threaded block to move, when the resistance encountered by the threaded block is small, the two-way threaded rod rotates to drive the turntable to move, thereby driving the threaded block to move through the cooperation of the arc column and the arc groove. When the two push plates clamp the printed part, the resistance encountered by the threaded block increases. When its resistance reaches a certain level, the arc groove squeezes the arc column, so that the arc column enters the slot, so that the turntable rotates with the two-way threaded rod, and the threaded block does not continue to move, so that when the clamping force of the threaded block reaches a certain level, it will not continue to move, thereby preventing the push plate from clamping the printed part in the event of motor failure or operational error.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] 1. Place the cardboard to be printed on the placement plate, move the push plate to make it fit the front and back sides of the cardboard, and calibrate the front and back of the cardboard. Then move the two fixed strips through the driving mechanism to calibrate the left and right sides of the cardboard to prevent the cardboard from shifting during movement. Then calibrate the cardboard in multiple directions, start the cylinder, move the printing press downward, and print on the cardboard.

[0021] 2. Install the rack and gear, start the second motor, drive the rotating column to rotate, the rotating column drives the gear to rotate, and the two racks meshing with the gear drive the fixed bar to move in the corresponding direction, correct the left and right sides of the cardboard, align the cardboard with the printing press, and prevent printing errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] Figure 2 It is a cross-sectional view of the push plate in the utility model.

[0024] Figure 3 It is another cross-sectional view of the push plate in the utility model.

[0025] Figure 4 It is a cross-sectional view of the threaded block in the utility model.

[0026] In the figure, 1. placement plate; 2. bracket; 3. cylinder; 4. printing press; 5. push plate; 6. slide; 7. fixing bar; 8. slide groove; 9. motor one; 10. bidirectional threaded rod; 11. threaded block; 12. ball bearing; 13. mounting groove; 14. rack; 15. rotating column; 16. gear; 17. moving groove; 18. moving block; 19. motor two; 20. turntable; 21. arc groove; 22. arc column; 23. notch; 24. spring. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] like Figure 1-Figure 3 As shown, the correction and positioning device of the printing machine 4 includes a placing plate 1, a bracket 2 is fixed on the placing plate 1, a cylinder 3 is fixed on the bracket 2, a printing machine 4 is fixed on the output shaft end of the cylinder 3, two push plates 5 are slidably connected to the placing plate 1, two sliding openings 6 are provided on the push plate 5, two fixed bars 7 are slidably connected to the sliding openings 6, and a driving mechanism is provided between the push plate 5 and the fixed bar 7.

[0029] The cardboard to be printed is placed on the placement plate 1, and the push plate 5 is moved to fit the front and back sides of the cardboard to correct the front and back of the cardboard. Then the two fixing strips 7 are moved by the driving mechanism to correct the left and right sides of the cardboard to avoid the cardboard from shifting during the movement. The cardboard is corrected in multiple directions, and then the cylinder 3 is started to move the printing machine 4 downward to print the cardboard.

[0030] Two slide grooves 8 are provided on the placement plate 1, and a motor 9 is fixed on the placement plate 1. A bidirectional threaded rod 10 extending into the slide groove 8 is fixed to the output shaft end of the motor 9. A threaded block 11 is threadedly connected to the bidirectional threaded rod 10, and the threaded block 11 is fixedly connected to the push plate 5.

[0031] With the above structure, by installing the bidirectional threaded rod 10 and the threaded block 11, starting the motor 9, driving the bidirectional threaded rod 10 to rotate, and the threaded block 11 to move, the two push plates 5 are driven to move in corresponding directions to correct the cardboard front and back.

[0032] A plurality of balls 12 are rotatably connected to the placement plate 1 .

[0033] The above structure is adopted, and the balls 12 are installed, which is beneficial to the cardboard during the pushing process, so that the cardboard can be easily moved on the placement plate 1, the friction can be reduced, and the damage to the cardboard can be avoided.

[0034] The driving mechanism includes a mounting groove 13 opened inside the push plate 5, a motor 2 19 is fixed on the push plate 5, a rotating column 15 extending into the mounting groove 13 is fixed to the output shaft end of the motor 2 19, a gear 16 is fixed on the rotating column 15, two racks 14 are slidably connected in the mounting groove 13, the two racks 14 are respectively meshed with the gear 16, the racks 14 are fixedly connected to the fixing bar 7, one of the racks 14 is located on the upper side of the gear 16, and the other rack 14 is located on the lower side of the gear 16.

[0035] With the above structure, by installing the rack 14 and the gear 16, starting the motor 2 19, driving the rotating column 15 to rotate, the rotating column 15 drives the gear 16 to rotate, and the two racks 14 meshing with the gear 16 drive the fixed bar 7 to move in the corresponding direction, so as to correct the left and right of the cardboard, align the cardboard with the printing machine 4, and prevent printing errors.

[0036] Two “T”-shaped moving grooves 17 are provided in the installation groove 13 . A “T”-shaped moving block 18 is slidably connected in the moving groove 17 . The moving block 18 is fixedly connected to the rack 14 .

[0037] With the above structure, by providing the moving groove 17, the installation and movement of the rack 14 are realized, so that the fixing bar 7 moves smoothly and the paperboard is corrected.

[0038] A circular opening is provided in the threaded block, in which a turntable 20 is rotatably connected. An arc groove 21 is provided in the circular opening. A notch 23 is provided on the outer wall of the turntable 20. An arc column 22 is slidably connected in the notch 23. A spring 24 is fixed in the notch 23, and the other end of the spring 24 is fixedly connected to the arc column 22.

[0039] With the above structure, by installing the arc column 22 and opening the arc groove 21, when the two-way threaded rod drives the threaded block to move, when the resistance of the threaded block is small, the two-way threaded rod rotates to drive the turntable 20 to move, thereby driving the threaded block to move through the cooperation of the arc column 22 and the arc groove 21. When the two push plates clamp the printed part, the resistance of the threaded block increases. When its resistance reaches a certain level, the arc groove 21 squeezes the arc column 22, so that the arc column 22 enters the notch 23, so that the turntable 20 rotates with the two-way threaded rod, and the threaded block does not continue to move, so that when the clamping force of the threaded block reaches a certain level, it will not continue to move, thereby preventing the push plate from clamping the printed part in the event of motor failure or operation error. The working principle of the utility model is as follows: the cardboard to be printed is placed on the placement plate 1, the motor 1 9 is started, the bidirectional threaded rod 10 is driven to rotate, the threaded block 11 is moved, and the two push plates 5 are driven to move in the corresponding directions to correct the front and back of the cardboard, the motor 2 19 is started, the rotating column 15 is driven to rotate, the rotating column 15 drives the gear 16 to rotate, and the two racks 14 meshing with the gear 16 drive the fixed bar 7 to move in the corresponding direction to correct the left and right of the cardboard, so that the cardboard is aligned with the printing machine 4.

[0040] In summary, by pushing the plate, the printed cardboard can be corrected in the front, back, left and right directions to prevent printing errors.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A correction and positioning device for a printing press, comprising a placement plate (1), characterized in that: A bracket (2) is fixed on the placement plate (1), a cylinder (3) is fixed on the bracket (2), a printing machine (4) is fixed on the output shaft end of the cylinder (3), two push plates (5) are slidably connected to the placement plate (1), two sliding openings (6) are provided on the push plates (5), two fixing bars (7) are slidably connected to the sliding openings (6), and a driving mechanism is provided between the push plates (5) and the fixing bars (7).

2. The correction and positioning device for a printing press according to claim 1, characterized in that: The placement plate (1) is provided with two slide grooves (8), a motor (9) is fixed on the placement plate (1), a bidirectional threaded rod (10) extending into the slide groove (8) is fixed to the output shaft end of the motor (9), a threaded block (11) is threadedly connected to the bidirectional threaded rod (10), and the threaded block (11) is fixedly connected to the push plate (5).

3. The correction and positioning device for a printing press according to claim 1, characterized in that: A plurality of balls (12) are rotatably connected to the placement plate (1).

4. The correction and positioning device for a printing press according to claim 1, characterized in that: The driving mechanism comprises a mounting groove (13) provided inside the push plate (5), a second motor (19) being fixed on the push plate (5), a rotating column (15) extending into the mounting groove (13) being fixed on the output shaft end of the second motor (19), a gear (16) being fixed on the rotating column (15), two racks (14) being slidably connected in the mounting groove (13), the two racks (14) being respectively meshed with the gears (16), the racks (14) being fixedly connected with the fixing bar (7), one of the racks (14) being located on the upper side of the gear (16), and the other rack (14) being located on the lower side of the gear (16).

5. The correction and positioning device for a printing press according to claim 4, characterized in that: Two "T"-shaped moving grooves (17) are provided in the installation groove (13), a "T"-shaped moving block (18) is slidably connected in the moving groove (17), and the moving block (18) is fixedly connected to the rack (14).

6. The correction and positioning device for a printing press according to claim 2, characterized in that: A circular opening is provided in the threaded block (11), a rotating disk (20) is rotatably connected in the circular opening, an arc-shaped groove (21) is provided in the circular opening, a notch (23) is provided on the outer wall of the rotating disk (20), an arc-shaped column (22) is slidably connected in the notch (23), a spring (24) is fixed in the notch (23), and the other end of the spring (24) is fixedly connected to the arc-shaped column (22).

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