Anti-deviation device for guide belt of digital printing machine

Abstract

The present invention belongs to the technical field of digital printing machines, and in particular to an anti-deviation device for a guide belt of a digital printing machine. The following scheme is proposed, including a mounting frame, a guide roller is rotatably provided on the mounting frame, a guide belt is rotatably provided on the guide roller, an electric guide rail 1 is installed on the mounting frame, the electric guide rail 1 extends in the moving direction of the guide belt, a movable frame is connected to the electric guide rail 1, the movable frame extends in a direction perpendicular to the electric guide rail 1, two horizontally movable suction cup boxes are provided on the movable frame, the top of the suction cup box is in sliding contact with the bottom of the guide belt, and both ends of the movable frame are provided with sensing units. The present invention uses the suction cup box to move the guide belt in a direction away from the sensing unit that sends a signal until the suction cup box stops sucking after the sensing unit stops sending a signal, and the suction cup box is disconnected by the movement of the suction cup box at the bottom of the guide belt to achieve deviation correction and effectively avoid wrinkles of the guide belt and affect the printing operation effect.

Description

Technical Field

[0001] The invention relates to the technical field of digital printing machines, and in particular to an anti-deviating device for a guide belt of a digital printing machine. Background Art

[0002] With the rapid development of digital inkjet printing technology, its advantages are increasingly valued by the textile printing industry. The guide belt in the guide belt digital printing machine is the main component for providing transmission. If the printing guide belt is offset, it will cause the digital printing to offset or overlap and affect the printing operation effect.

[0003] Referring to the Chinese patent with patent announcement number CN214239958U, a detection mechanism for guiding belt deviation correction is disclosed, which is installed on one side of the guiding belt of the printing machine, including a mounting bracket, a T-shaped rotating bracket, a stop wheel, a counterweight block, a switch trigger block, a first proximity switch and a second proximity switch. The T-shaped intersection of the T-shaped rotating bracket can be rotatably mounted on the mounting bracket, the stop wheel, the counterweight block and the switch trigger block are respectively installed on the upper vertical arm, the horizontal side arm and the lower vertical arm of the T-shaped rotating bracket, and the first proximity switch and the second proximity switch are both installed on the mounting bracket outside one side of the swing plane of the switch trigger block.

[0004] However, the above scheme and conventional means for preventing the guide belt from deflecting both limit or correct the edge positions on both sides of the guide belt, and when the guide belt deflects or corrects, the edge of the guide belt is prone to wrinkles, which will also affect the printing effect. Summary of the invention

[0005] Based on the technical problems of the background technology, the present invention proposes an anti-deviation device for a guide belt of a digital printing machine.

[0006] The present invention proposes an anti-deviation device for a guide belt of a digital printing machine, comprising a mounting frame, a guide roller is rotatably arranged on the mounting frame, a guide belt is rotatably arranged on the guide roller, an electric guide rail 1 is installed on the mounting frame, the electric guide rail 1 extends in the moving direction of the guide belt, a movable frame is connected to the electric guide rail 1, the movable frame extends in a direction perpendicular to the electric guide rail 1, two horizontally movable suction cup boxes are arranged on the movable frame, the top of the suction cup box is in sliding contact with the bottom of the guide belt, and both ends of the movable frame are provided with sensing units; the movable frame is moved synchronously with the guide belt by the electric guide rail 1 Move a certain distance, and then move in the opposite direction to reset. During the same-direction movement, the two suction cup boxes move from the middle position of the movable frame toward the two ends respectively. If the guide belt deviates and the sensing unit sends out a signal, the corresponding suction cup box generates suction from the bottom of the guide belt and is sucked by the negative pressure at the bottom of the guide belt. Then the suction cup box is used to move the guide belt toward the direction away from the sensing unit that sends out the signal, until the sensing unit stops sending out the signal and the suction cup box disconnects the suction. When the movable frame and the guide belt move quickly in the opposite direction to reset, the two suction cup boxes do not perform suction operations but move from the two ends of the movable frame toward the middle position to reset.

[0007] Preferably, the sensing unit is provided with an installation box installed on the end of the movable frame, and a connecting cavity 2 is provided in the installation box. A plurality of sliders are slidably connected in the connecting cavity 2, and a plurality of extension rods are installed on the top of the slider. A limiting ball is fixed on the top of the extension rod. A through hole is opened at a position on the top of the installation box corresponding to the limiting ball, and a spring 2 is connected to the bottom of the slider.

[0008] Preferably, a pressure sensor is fixed at the bottom of the second connecting chamber, a pressure plate is arranged on the pressure sensor, a vertical rod is fixed at the bottom of the sliding block, and a pressure block corresponding to the position of the pressure plate is installed at the bottom end of the vertical rod.

[0009] Preferably, one side of the installation box is connected to a connecting tube 2, which is located above the slider. The cross-section of the through hole is larger than the cross-section of the limiting ball. When the guide belt is offset, the connecting tube 2 corresponding to the offset direction inhales air outwards, and the connecting tube 2 corresponding to the other side blows air into the connecting cavity 2.

[0010] Preferably, a movable groove is provided on the movable frame, and the suction cup box slides in the movable groove. Two horizontally placed electric guide rails 2 are installed on one side of the movable groove, and the suction cup box is connected to the electric guide rails 2.

[0011] Preferably, a connecting cavity 1 is opened inside the suction cup box, a suction groove connected to the connecting cavity 1 is opened at the top of the suction cup box, a connecting pipe 1 is connected to the side of the suction cup box away from the electric guide rail 2, a through groove is opened at the position corresponding to the movable frame and the connecting pipe 1, and an electromagnetic valve is arranged on the connecting pipe 1.

[0012] Preferably, thickened plates are installed at the top positions of the inner walls at both ends of the connecting chamber, a horizontally placed piston plate is arranged in the connecting chamber, a spring is connected between the bottom of the piston plate and the bottom of the connecting chamber, both sides of the piston plate are in sliding contact with the inner wall of the connecting chamber, and the two ends of the piston plate can be in sliding contact with the outer wall of the thickened plate.

[0013] Preferably, a limit strip is fixed on the outer wall of the thickened plate, the limit strip is arranged between the connecting pipe 1 and the piston plate, an electromagnetic block is installed on the limit strip, and a magnetic suction sheet is installed on the piston plate.

[0014] Preferably, a plurality of air holes are provided at the bottom of both ends of the suction cup box, and the air holes are located below the piston plate.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the present invention, a suction cup box is used to move the guide belt in a direction away from the sensing unit that sends out a signal until the sensing unit stops sending out a signal and then the suction cup box stops suctioning, thereby achieving the effect of correcting the deviation and preventing the deviation of the guide belt of the digital printing machine. The correction is achieved by the movement of the suction cup box at the bottom of the guide belt, which effectively avoids causing wrinkles in the guide belt and affecting the printing effect.

[0017] 2. In the present invention, when the guide belt is offset, air is blown upwards at the bottom in front of the guide belt moving horizontally to reduce the friction of the bottom edge in front of the guide belt moving horizontally, and air is sucked downwards after the guide belt moves horizontally to smooth the bottom edge of the guide belt behind the movement, thereby further ensuring the flatness of the guide belt of the digital printing machine during long-term continuous use, thereby ensuring the printing operation effect.

[0018] 3. In the present invention, during deviation correction, the upward exhaust operation of the piston plate is used to improve the efficiency of the upper suction negative pressure. After the deviation correction is completed, the upper and lower parts of the piston plate are quickly connected to allow the suction groove position to quickly return to normal, further ensuring the accuracy and stability of the deviation correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an anti-deviating device for a guide belt of a digital printing machine proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a mounting frame of an anti-deviation device for a guide belt of a digital printing machine proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a movable frame and a sensing unit of an anti-deviation device for a guide belt of a digital printing machine proposed by the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of a sensing unit of an anti-deviation device for a guide belt of a digital printing machine proposed by the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of a mounting box of an anti-deviation device for a guide belt of a digital printing machine proposed by the present invention;

[0024] Figure 6 A schematic diagram of the structure of a movable frame of an anti-deviation device for a guide belt of a digital printing machine proposed by the present invention;

[0025] Figure 7 A schematic diagram of the structure of a suction cup box of an anti-deviating device for a guide belt of a digital printing machine proposed by the present invention;

[0026] Figure 8 The present invention is a schematic diagram of the internal structure of a suction cup box of an anti-deviating device for a guide belt of a digital printing machine.

[0027] In the figure: 1 mounting frame, 2 guide roller, 3 guide belt, 4 electric guide rail 1, 5 movable frame, 501 movable groove, 502 through groove, 6 suction cup box, 601 connecting cavity 1, 602 suction groove, 603 air hole, 7 sensing unit, 8 electric guide rail 2, 9 connecting pipe 1, 10 solenoid valve, 11 mounting box, 111 connecting cavity 2, 112 through hole, 12 slider, 13 spring 2, 14 extension rod, 15 limit ball, 16 pressure block, 17 pressure sensor, 18 pressure plate, 19 connecting pipe 2, 20 thickened plate, 21 limit strip, 22 piston plate, 23 spring 1, 24 magnetic suction sheet, 25 electromagnetic block. DETAILED DESCRIPTION

[0028] Example 1: Reference Figure 1-Figure 6, an anti-deviation device for a guide belt of a digital printing machine, comprising a mounting frame 1, a guide roller 2 is rotatably provided on the mounting frame 1, a guide belt 3 is rotatably provided on the guide roller 2, an electric guide rail 4 is installed on the mounting frame 1, the electric guide rail 4 extends in the moving direction of the guide belt 3, a movable frame 5 is connected to the electric guide rail 4, the movable frame 5 extends in a direction perpendicular to the electric guide rail 4, two horizontally movable suction cup boxes 6 are provided on the movable frame 5, the suction cup box 6 moves horizontally in the extending direction of the movable frame 5, the top of the suction cup box 6 is in sliding contact with the bottom of the guide belt 3, and both ends of the movable frame 5 are provided with sensing units 7 , two sensing units 7 are distributed on the periphery of the guide belt 3; when the guide belt 3 is not offset, the two sensing units 7 are just distributed on the periphery of both sides of the guide belt 3, that is, the sensing units 7 will not send out signals, and when the guide belt 3 is offset, the sensing units 7 at the corresponding positions will send out signals; when in use, the electric guide rail 4 drives the movable frame 5 to move synchronously with the guide belt 3 for a certain distance, and then moves in the opposite direction to reset. In the process of moving with the guide belt 3, the movable frame 5 and the guide belt 3 are relatively stationary. In the process of moving in the same direction, the two suction cup boxes 6 move from the middle position of the movable frame 5 toward the two ends respectively, and the sensing units 7 control The suction cup box 6 at the other end of the movable frame 5 is adapted to the sensing unit 7 at the opposite direction position moving outward from the middle position. During the same-direction movement of the movable frame 5 and the guide belt 3, if the guide belt 3 deviates and causes the sensing unit 7 to send a signal, the corresponding suction cup box 6 generates suction from the bottom of the guide belt 3 and is sucked by the negative pressure at the bottom of the guide belt 3, and then the suction cup box 6 is used to move the guide belt away from the sensing unit 7 that sends the signal, until the sensing unit 7 stops sending the signal and the suction cup box 6 is disconnected, thereby achieving the correction and anti-deviation operation effect of the guide belt of the digital printing machine; and if the guide belt does not When there is an offset, the two suction cup boxes 6 move normally from the middle of the movable frame 5 toward the two ends without suction operation, so as to use the suction cup boxes 6 to smooth the guide belt 3 from the middle position toward the two sides, thereby further ensuring the stability and anti-offset effect and anti-wrinkle effect of the guide belt of the digital printing machine, thereby effectively improving the printing operation effect, and through the movement of the suction cup boxes 6 at the bottom of the guide belt 3 to achieve deviation correction, effectively avoid causing wrinkles in the guide belt 3 and affect the printing operation effect; when the movable frame 5 and the guide belt 3 move in the opposite direction and reset quickly, the two suction cup boxes 6 do not perform suction operation and move from the two ends of the movable frame 5 to the middle position to reset.

[0029] In the present invention, the sensing unit 7 is provided with an installation box 11 installed at the end of the movable frame 5, the top surface of the installation box 11 is flush with the bottom of the guide belt 3, and a connecting cavity 111 is provided in the installation box 11. A plurality of sliders 12 are slidably connected in the connecting cavity 111, and the sliders 12 are extended in the moving direction of the guide belt 3. A plurality of vertically placed extension rods 14 are installed on the top of the slider 12, and a limiting ball 15 is fixed at the top of the extension rod 14. A through hole 112 is opened at the position corresponding to the limiting ball 15 at the top of the installation box 11, and a spring 13 is connected between the bottom of the slider 12 and the connecting cavity 111. In a normal state, the limiting ball 15 extends to a partial distance above the through hole 112. When the guide belt 3 deviates, the limiting ball 15, the extension rod 14 and the slider 12 will be squeezed downward to make the bottom of the guide belt 3 contact with the top of the limiting ball 15, so that the distributed limiting balls 15 can be used to assist the guide belt 3 in correcting deviation and preventing deviation.

[0030] In the present invention, a pressure sensor 17 is fixed at the bottom of the connecting chamber 111, a pressure plate 18 is arranged on the pressure sensor 17, a vertical rod is fixed at the bottom of the slider 12, and a pressure block 16 corresponding to the position of the pressure plate 18 is installed at the bottom of the vertical rod. When the guide belt 3 deviates, the limiting ball 15, the extension rod 14, the slider 12, the vertical rod and the pressure block 16 at the corresponding position are squeezed downward, so that the pressure sensor 17 sends a signal to control the suction of the suction cup box 6 to perform the deviation correction operation.

[0031] In the present invention, a movable groove 501 is provided on the movable frame 5, and the extension direction of the movable groove 501 is perpendicular to the moving direction of the guide belt 3. The movable groove 501 is opened in the direction of the sensing unit 7, and the suction cup box 6 slides in the movable groove 501. Two horizontally placed electric guide rails 28 are installed on one side of the movable groove 501. The suction cup box 6 is connected to the electric guide rails 28, and each electric guide rail 28 is only connected to one of the suction cup boxes 6, and one of the suction cup boxes 6 is controlled by the electric guide rail 28 to move horizontally.

[0032] In the present invention, a connecting cavity 601 is provided inside the suction cup box 6, an air suction groove 602 connected to the connecting cavity 601 is provided at the top of the suction cup box 6, a connecting pipe 9 is connected to the side of the suction cup box 6 away from the electric guide rail 28, a through groove 502 is provided at the position corresponding to the movable frame 5 and the connecting pipe 9, the connecting pipe 9 is configured as a hose structure, and an electromagnetic valve 10 is provided on the connecting pipe 9. After the sensing unit 7 sends a signal, the electromagnetic valve 10 is controlled to open and the connecting pipe 9 is used to perform an air suction operation from the connecting cavity 601 and the air suction groove 602, so that negative pressure is adsorbed between the top surface of the suction cup box 6 and the ground of the guide belt 3, so that the guide belt 3 is corrected by the movement of the corresponding suction cup box 6.

[0033] Embodiment 2: Embodiment 2 includes all structures and methods of Embodiment 1, with reference to Figure 1-Figure 6, an anti-deviating device for the guide belt of a digital printing machine, based on embodiment 1, a connecting pipe 2 19 is connected to one side of the installation box 11, and the connecting pipe 2 19 is located above the slider 12, and the cross-section of the through hole 112 is larger than the cross-section of the limiting ball 15. When the guide belt 3 deviates, the connecting pipe 2 19 corresponding to the deviation direction sucks air outward, and the connecting pipe 2 19 corresponding to the other side blows air into the connecting cavity 2 111, and the suction strength of the connecting pipe 2 19 is less than the suction strength of the suction cup box 6 position, so that when the guide belt 3 deviates, the guide belt 3 is corrected by the suction cup box 6 and the bottom of the guide belt 3. The guide belt 3 moves toward the corresponding direction of the blowing of the connecting pipe 2 19, so that the bottom of the guide belt 3 moves horizontally and blows air upward to reduce the friction of the bottom edge of the guide belt 3 in front of the horizontal movement, so that the guide belt 3 sucks air downward after the horizontal movement to smooth the bottom edge of the guide belt 3 after the movement, so as to further ensure the flatness of the guide belt of the digital printing machine for long-term continuous use, thereby ensuring the printing operation effect.

[0034] Example 3: Reference Figure 1-Figure 8, an anti-deviating device for a guide belt of a digital printing machine, based on Example 1 or Example 2, a thickened plate 20 is installed at the top position of the inner wall at both ends of the connecting chamber 601, a horizontally placed piston plate 22 is arranged in the connecting chamber 601, a spring 23 is connected between the bottom of the piston plate 22 and the bottom of the connecting chamber 601, both sides of the piston plate 22 are in sliding contact with the inner wall of the connecting chamber 601, the two ends of the piston plate 22 can be in sliding contact with the outer wall of the thickened plate 20, and the outer wall of the thickened plate 20 is fixed to a limited The limit strip 21 is set between the connecting pipe 9 and the piston plate 22. The limit strip 21 is located above the outer wall of the bottom end of the thickened plate 20. The limit strip 21 is installed with an electromagnetic block 25. The piston plate 22 is installed with a magnetic suction sheet 24. A plurality of air holes 603 are opened at the bottom of both ends of the suction cup box 6. The air holes 603 are located below the piston plate 22. Under normal conditions, the electromagnetic valve 10 on the connecting pipe 9 is closed and the electromagnetic block 25 is not energized. The piston plate 22 is normally placed at the bottom of the thickened plate 20. The piston plate 22 is in the lower position, at this time, there is a gap between the two ends of the piston plate 22 and the inner wall of the connecting chamber 601, so that the upper part of the piston plate 22 is connected with the lower part of the piston plate 22, that is, the suction groove 602 is naturally connected with the air hole 603; when the deviation correction operation is performed, the solenoid valve 10 is opened and the electromagnetic block 25 is energized. After the electromagnetic block 25 is energized, it acts on the magnetic suction sheet 24 to attract the piston plate 22 upward until the top of the piston plate 22 contacts the limit strip 21 and the two ends of the piston plate 22 contact the thickened plate 20, thereby the piston plate 22 is The upper side is isolated from the lower side, at this time, the connecting pipe 9 draws outwards to generate negative pressure at the position of the suction groove 602, thereby improving the efficiency of the upper suction negative pressure through the upward exhaust operation of the piston plate 22, so as to improve the accuracy of the correction; after the correction is completed, the solenoid valve 10 is closed and the solenoid block 25 is powered off, and the piston plate 22 is quickly pulled down under the action of the spring 23, so that the upper and lower sides of the piston plate 22 are quickly connected to make the position of the suction groove 602 quickly return to normal, further ensuring the accuracy and stability of the correction.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-deviation device for a guide belt of a digital printing machine, comprising a mounting frame (1), a guide roller (2) rotatably arranged on the mounting frame (1), and a guide belt (3) rotatably arranged on the guide roller (2), characterized in that: The mounting frame (1) is provided with an electric guide rail (4), the electric guide rail (4) extending in the moving direction of the guide belt (3), the electric guide rail (4) is connected with a movable frame (5), the movable frame (5) extending in a direction perpendicular to the electric guide rail (4), the movable frame (5) is provided with two horizontally movable suction cup boxes (6), the top of the suction cup boxes (6) is in sliding contact with the bottom of the guide belt (3), and both ends of the movable frame (5) are provided with sensing units (7); The movable frame (5) is moved synchronously with the guide belt (3) by the electric guide rail 1 (4) for a certain distance, and then moves in the opposite direction to reset. During the same-direction movement, the two suction cup boxes (6) move from the middle position of the movable frame (5) to the two ends respectively. If the guide belt (3) deviates so that the sensing unit (7) sends a signal, the corresponding suction cup box (6) generates suction from the bottom of the guide belt (3) and is sucked by the negative pressure at the bottom of the guide belt (3). Then, the suction cup box (6) is used to move the guide belt away from the sensing unit (7) that sends the signal, until the sensing unit (7) stops sending the signal and the suction cup box (6) is disconnected. When the movable frame (5) and the guide belt (3) move in the opposite direction and reset quickly, the two suction cup boxes (6) do not perform suction but move from the two ends of the movable frame (5) to the middle position to reset. The suction cup box (6) and the electric guide rail 2 (8) The suction cup box (6) is connected to each other, a connecting chamber (601) is provided inside the suction cup box (6), a connecting pipe (9) is connected to the side of the suction cup box (6) away from the electric guide rail (8), a thickened plate (20) is installed at the top position of the inner wall at both ends of the connecting chamber (601), a horizontally placed piston plate (22) is arranged in the connecting chamber (601), a spring (23) is connected between the bottom of the piston plate (22) and the bottom of the connecting chamber (601), a limit strip (21) is fixed to the outer wall of the thickened plate (20), the limit strip (21) is arranged at a position between the connecting pipe (9) and the piston plate (22), an electromagnetic block (25) is installed on the limit strip (21), a magnetic suction sheet (24) is installed on the piston plate (22), and a plurality of air holes (603) are provided at the bottom of both ends of the suction cup box (6), and the air holes (603) are located below the piston plate (22).

2. The anti-deviation device for the guide belt of a digital printing machine according to claim 1, characterized in that: The sensing unit (7) is provided with a mounting box (11) mounted on the end of the movable frame (5), a second connecting cavity (111) is provided in the mounting box (11), a plurality of sliders (12) are slidably connected in the second connecting cavity (111), a plurality of extension rods (14) are mounted on the top of the sliders (12), a limiting ball (15) is fixed on the top of the extension rods (14), a through hole (112) is provided at a position corresponding to the limiting ball (15) on the top of the mounting box (11), and a second spring (13) is connected to the bottom of the slider (12).

3. The anti-deviation device for the guide belt of a digital printing machine according to claim 2, characterized in that: A pressure sensor (17) is fixed to the bottom of the second connecting chamber (111), a pressure plate (18) is arranged on the pressure sensor (17), a vertical rod is fixed to the bottom of the sliding block (12), and a pressure block (16) corresponding to the position of the pressure plate (18) is installed at the bottom end of the vertical rod.

4. The anti-deviation device for the guide belt of a digital printing machine according to claim 3, characterized in that: A second connecting pipe (19) is connected to one side of the installation box (11). The second connecting pipe (19) is located above the slider (12). The cross section of the through hole (112) is larger than the cross section of the limiting ball (15). When the guide belt (3) deviates, the second connecting pipe (19) corresponding to the deviating direction inhales air outwards, and the second connecting pipe (19) corresponding to the other side blows air into the second connecting chamber (111).

5. The anti-deviation device for the guide belt of a digital printing machine according to any one of claims 1 to 4, characterized in that: The movable frame (5) is provided with a movable groove (501), the suction cup box (6) slides in the movable groove (501), and two horizontally placed electric guide rails (8) are installed on one side of the movable groove (501).

6. The anti-deviation device for the guide belt of a digital printing machine according to claim 5, characterized in that: The top of the suction cup box (6) is provided with an air suction groove (602) connected to the connecting cavity 1 (601), and the movable frame (5) is provided with a through groove (502) at a position corresponding to the connecting pipe 1 (9), and the connecting pipe 1 (9) is provided with a solenoid valve (10).

7. The anti-deviation device for the guide belt of a digital printing machine according to claim 6, characterized in that: Both sides of the piston plate (22) are in sliding contact with the inner wall of the connecting chamber 1 (601), and both ends of the piston plate (22) are in sliding contact with the outer wall of the thickened plate (20).

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