Printing structure and printing machine comprising same

Abstract

The invention relates to the technical field of printing equipment, and discloses a printing structure which comprises a puller box body, and a first paper passing roller, an air suction puller and a second paper passing roller are sequentially arranged on the inner wall of the puller box body in the feeding direction of a printing base material. The two sets of paper pressing roller mechanisms are connected to the inner wall of the puller box body and are arranged close to the first paper passing roller and the second paper passing roller respectively, and the paper pressing roller mechanisms are connected to the air suction puller in a pressing mode; the air blocking ring assembly is movably arranged on the inner wall of the air suction pull head and used for adjusting the air suction range of the air suction pull head. The air suction pull head sucks air from the inside, so that negative pressure is formed between the surface of the air suction pull head and a printing base material, the printing base material is firmly adsorbed on the surface of the air suction pull head, the printing base material does not deviate or move, and the nesting precision of a printed matter can be better controlled. The air blocking ring assemblies are arranged in the air suction pull head, the distance between the air blocking ring assemblies can be adjusted according to the width of the printing base material, and the air suction range of the air suction pull head is adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment, and more specifically, to a printing structure and a printing machine containing the structure. Background Art

[0002] A printing press is a device used to print on the surface of materials such as paper, textiles, and plastics. Most printing presses use rollers to carry and transfer the printing substrate, which is transported to the bottom of the inkjet head along the roller. The inkjet head prints on the printing substrate. The position stability of the printing substrate during the printing process affects the quality of the printed product.

[0003] In the prior art, such as the utility model patent with application number CN202323569834.8, a roller-type inkjet printer specially used for thick paper is disclosed, comprising a paper feeding unit and a paper receiving unit, wherein a gripper-free suction roller is arranged between the paper feeding unit and the paper receiving unit, and the paper output end of the paper feeding unit is not lower than the highest point of the cylinder body of the gripper-free suction roller; an inkjet head is arranged above the gripper-free suction roller, and the gripper-free suction roller has a strong adsorption area corresponding to the inkjet head, and when the paper head of the paper passes through the strong adsorption area, it is instantly adsorbed to the surface of the roller and is precisely positioned.

[0004] Although the above device can adsorb printed substrates, its suction range is fixed and cannot adapt to printed substrates of different widths. For example, when adsorbing printed substrates with smaller widths, some air outlets will not be fully covered, resulting in waste of wind power and energy.

[0005] Therefore, it is necessary to propose a printing structure and a printing machine containing the structure to at least partially solve the problems existing in the prior art. Summary of the invention

[0006] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0007] To at least partially solve the above problems, the present invention provides a printing structure, comprising:

[0008] A slider box body, wherein a first paper feed roller, a suction slider and a second paper feed roller are sequentially arranged on the inner wall of the slider box body along the feeding direction of the printing substrate;

[0009] The two sets of paper pressing roller mechanisms are connected to the inner wall of the slider box and are respectively arranged close to the first paper feeding roller and the second paper feeding roller. The paper pressing roller mechanisms press the printed substrate onto the suction slider;

[0010] The wind shield ring component is movably arranged on the inner wall of the air suction pull head and is used to adjust the air suction range of the air suction pull head.

[0011] Preferably, the printing structure further includes: a servo motor, which is installed on the outside of the slider box, and the output end of the servo motor is connected to a reducer, and the output end of the reducer is connected to one end of the suction slider through a coupling.

[0012] Preferably, the paper pressing roller mechanism comprises:

[0013] A paper pressing roller frame, one end of which is rotatably connected to the slider box body, and the other end of which is connected to a roller;

[0014] A press roller is installed on the press roller frame and is located outside the suction pull head. A press channel is formed between the press roller and the suction pull head for the printing substrate to pass through.

[0015] A spring seat, which is connected to the inner wall of the slider housing and is located outside one end of the slider housing close to the roller;

[0016] A spring is connected between a spring seat and a paper pressing roller frame.

[0017] Preferably, the paper pressing roller mechanism further comprises:

[0018] Cylinder, which is installed outside the slider box;

[0019] A connecting rod, one end of which is connected to the output end of the cylinder, and the other end is connected to a rotating block, the rotating block is rotatably connected to the side wall of the slider box body, a notch is arranged on the rotating block, and a roller is rotatably arranged on the rotating block.

[0020] Preferably, the air suction pull head comprises:

[0021] The air suction pull head roller has two ends rotatably connected to the side wall of the pull head box, and one end of the air suction pull head roller is connected to the coupling;

[0022] The first deep groove ball bearing and the second deep groove ball bearing are respectively arranged between the two ends of the air suction slider roller and the slider box body.

[0023] Preferably, the suction slider roller is drilled with a plurality of small holes along the circumferential direction, and the small holes are connected with the inner cavity of the suction slider roller. The other end of the suction slider roller is connected to the exhaust fan through an air duct. The exhaust fan is installed on the outer wall of the slider box, and the printed substrate is adsorbed on the suction slider roller.

[0024] Preferably, the air suction pull head also includes:

[0025] The air duct shaft is coaxially arranged inside the air suction pull head roller, and a gap is arranged between the air duct shaft and the inner wall of the air suction pull head roller. A long strip air outlet is arranged along the axial direction of the air duct shaft, and the air outlet corresponds to the printing substrate between the two sets of paper pressing roller mechanisms;

[0026] Deep groove ball bearing three and deep groove ball bearing four are respectively installed at both ends of the air duct shaft, deep groove ball bearing three is connected with the air suction pull head roller, deep groove ball bearing four extends out of the air suction pull head roller and is connected with the bearing end cover, and a set screw is provided on the bearing end cover;

[0027] The air duct locking ring is installed on the air duct shaft and arranged between the air suction pull head roller and the bearing end cover. The set screw is connected to the air duct locking ring.

[0028] Preferably, the air suction pull head also includes:

[0029] A T-shaped lead screw is concentrically arranged inside the air duct shaft, and screw threads with opposite rotation directions are arranged on both sides of the T-shaped lead screw. The wind shielding ring assembly is screwed onto the T-shaped lead screw. The T-shaped lead screw is hollow and has an air extraction hole in the middle. The air extraction hole is connected to the air duct shaft cavity. One end of the T-shaped lead screw is blocked, and the other end extends out of the bearing end cover to be connected to the air duct.

[0030] Needle bearing one and needle bearing two, wherein the needle bearing one and needle bearing two are respectively connected between two ends of the T-shaped lead screw and the air duct shaft;

[0031] The lead screw fixing plate is connected to one end of the T-type lead screw extending out of the bearing end cover and is used to lock the T-type lead screw and the bearing end cover.

[0032] Preferably, the wind shield ring assembly comprises:

[0033] T-nuts, two T-nuts are respectively screwed on the left and right threads of the T-screw;

[0034] Wind shield ring, which is installed on the outside of the T-nut;

[0035] A guide wear-resistant ring, which is installed on the outside of the wind shielding ring and is slidably connected with the inner wall of the air duct shaft;

[0036] The wear-resistant guide block is connected to a side of the guide wear-resistant ring close to the air outlet, and the wear-resistant sliding block is slidably connected to the air outlet.

[0037] Preferably, the ends of the paper feeding roller 1 and the paper feeding roller 2 are provided with shock-absorbing end covers, which are installed on the slider box body, and the shock-absorbing end covers include:

[0038] A transmission groove, which is arranged at the center of the shock-absorbing end cover;

[0039] A first support plate, which is arranged at the center of the transmission groove and abuts against the end of the paper feeding roller;

[0040] End cover support rods, three end cover support rods are evenly connected to the edge of the first support plate, the end cover support rods are L-shaped, the outer wall of the end cover support rods is slidably connected to the transmission groove, and the bending section of the end cover support rods is located on the side close to the bottom of the transmission groove;

[0041] The wire wheel is rotatably connected in the shock-absorbing end cover, a coil spring is arranged on the rotating shaft of the wire wheel, and the end of the connecting wire on the wire wheel extends into the transmission groove and is connected with the end cover support rod.

[0042] Preferably, the first support plate comprises:

[0043] A limiting rod, the limiting rod is slidably connected in the first support plate, and one end of the limiting rod protrudes from the first support plate and is engaged with a limiting hole on the side of the transmission groove;

[0044] A fixing ring, the fixing ring is connected to the limiting rod and is slidably connected in the first support plate cavity, a spring is sleeved on the limiting rod, and the spring is connected between the fixing ring and the inner wall of the first support plate cavity;

[0045] A first wedge plate, the first wedge plate is connected to the other end of the limiting rod;

[0046] A top block, the top block is slidably connected to the first support plate, and one end of the top block protrudes from the first support plate and is connected to the paper feed roller;

[0047] The second wedge plate is connected to the other end of the top block, and the inclined surface of the second wedge plate slides relatively with the inclined surface of the first wedge plate.

[0048] Preferably, a second support plate, the second support plate is located inside the first support plate and is slidably connected to the end cover support rod, and a spring is connected between the first support plate and the second support plate;

[0049] A flexible pad, the flexible pad is connected between the edges of the first support plate and the second support plate, the flexible pad is in a bent state and abuts against the inner wall of the transmission groove;

[0050] A push rod is connected to the second support plate and passes through the center of the first support plate. The length of the push rod protruding from the first support plate is greater than the length of the push block protruding from the first support plate.

[0051] Preferably, a leveling mechanism is provided between the top rod and the second support plate, and the leveling mechanism comprises:

[0052] A sphere, the sphere is connected to the center of the second support plate, and the second support plate can rotate relative to the sphere;

[0053] A conical seat connected to the center of the top rod near one end of the second support plate;

[0054] A screw rod is rotatably connected between the ball and the inner wall of the conical seat;

[0055] A connecting rod, the connecting rod support is connected between the inner wall of the conical seat and the sphere, and a plurality of connecting rods are evenly arranged along the circumference of the conical seat;

[0056] A nut, the nut being threadedly connected to the screw rod;

[0057] A tension spring connected between the nut and a lug on a side of the second support plate;

[0058] The leveling rod is rotatably arranged in the top rod. One end of the leveling rod is connected to the screw rod, and the other end extends to the groove at the end of the top rod and is connected to the adjustment block.

[0059] Preferably, a printing machine comprises the printing structure.

[0060] Compared with the prior art, the present invention has at least the following beneficial effects:

[0061] The present invention provides a printing structure, in which a suction pull head pulls the printing substrate to make intermittent movements, and the suction pull head sucks air from the inside, so that a negative pressure is formed between the surface of the suction pull head and the printing substrate, and the printing substrate is firmly adsorbed on the surface of the suction pull head, so that the printing substrate does not deviate or move, and the positioning accuracy of the printed product can be better controlled. A wind shield ring assembly is arranged in the suction pull head, and the spacing of the wind shield ring assembly can be adjusted according to the width of the printing substrate, so as to adjust the suction range of the suction pull head and reduce wind force and energy waste.

[0062] The present invention also provides a printing machine having the technical effect of the above printing structure.

[0063] The printing structure and the printing machine containing the structure described in the present invention, other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technical personnel in the field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0065] Figure 1 It is a structural schematic diagram of the present invention;

[0066] Figure 2 This is a schematic diagram of paper feeding of the pull head in the present invention;

[0067] Figure 3 It is a front view of the structure of the present invention;

[0068] Figure 4 It is a rear view of the structure of the present invention;

[0069] Figure 5 It is a right side view of the structure of the present invention;

[0070] Figure 6 It is a left view of the structure of the present invention;

[0071] Figure 7 It is a structural schematic diagram of the air suction pull head in the present invention;

[0072] Figure 8 It is a schematic diagram of the cross-sectional structure of the air suction slider in the present invention;

[0073] Fig. 9 For the present invention Figure 8 A schematic diagram of the local enlarged structure at point A in the middle;

[0074] Fig.10 For the present invention Figure 8 A schematic diagram of the local enlarged structure at B in the middle;

[0075] Fig.11 For the present invention Figure 8 A schematic diagram of the local enlarged structure at C in the middle;

[0076] Fig.12 It is a schematic diagram of the cross-sectional structure of the shock-absorbing end cover in the present invention;

[0077] Fig.13 It is a schematic diagram of the internal structure of the shock-absorbing end cover in the present invention;

[0078] Fig.14 Schematic diagram of the cross-sectional structure of the first support plate and the second support plate in the present invention (Figure (a) shows the limit rod in an extended state, and Figure (b) shows the limit rod in a retracted state);

[0079] Fig.15 It is a schematic cross-sectional structure diagram of the leveling mechanism in the present invention;

[0080] Fig.16 It is a structural schematic diagram of the leveling mechanism in the present invention.

[0081] In the figure: 1. Slider housing; 2. Printing substrate; 3. Paper feed roller 1; 4. Air suction slider; 5. Paper feed roller 2; 6. Paper pressing roller mechanism; 7. Servo motor; 8. Speed ​​reducer; 9. Coupling; 11. Paper pressing roller frame; 12. Roller; 13. Paper pressing roller; 14. Spring seat; 15. Spring; 16. Cylinder; 17. Connecting rod; 18. Rotating block; 21. Air suction slider roller; 22. Deep groove ball bearing 1; 23. Deep groove ball bearing 2; 24. Air duct; 25. Exhaust fan; 26. Air duct shaft; 27. Deep groove ball bearing 3; 28. Deep groove ball bearing 4; 29. ​​Bearing end cover; 31. Set screw; 32. Air duct locking ring; 33. Air outlet; 34. T-type lead screw; 35. Exhaust hole; 36. Needle bearing one; 37. Needle bearing two; 41. T-type nut; 42. Wind shield ring; 43. Guide wear ring; 44. Wear-resistant guide block; 45. Lead screw fixing plate; 51. Shock-absorbing end cover; 52. Transmission groove; 53. First support plate; 54. End cover support rod; 55. Wire wheel; 56. Limit rod; 57. Fixed ring; 58. First wedge plate; 59. Ejector block; 61. Second wedge plate; 62. Second support plate; 63. Flexible pad; 64. Ejector rod; 65. Sphere; 66. Conical seat; 67. Screw; 68. Connecting rod; 69. Nut; 71. Tension spring; 72. Leveling rod; 73. Adjustment block. DETAILED DESCRIPTION

[0082] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0083] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0084] Embodiment 1:

[0085] like Figure 1-6 As shown, the present invention provides a printing structure, comprising:

[0086] The slider box body 1 has a paper feed roller 1 3, a suction slider 4 and a paper feed roller 2 5 arranged in sequence on the inner wall of the slider box body 1 along the feeding direction of the printing substrate 2;

[0087] The two sets of paper pressing roller mechanisms 6 are connected to the inner wall of the slider box 1 and are arranged close to the paper feeding roller 1 3 and the paper feeding roller 2 5 respectively. The paper pressing roller mechanisms 6 press the printed substrate 2 onto the suction slider 4;

[0088] The wind shielding ring component is movably arranged on the inner wall of the air suction pull head 4 and is used to adjust the air suction range of the air suction pull head 4.

[0089] The working principle and beneficial effects of the above technical solution are:

[0090] A printing structure, the printing substrate 2 passes through the paper feed roller 1 3, the suction pull head 4 and the paper feed roller 2 5 in sequence along the feeding direction, and the paper pressing roller mechanism 6 is in a non-pressurized state; then the paper pressing roller mechanism 6 is pressed together with the suction pull head 4 to press the printed paper. During the operation of the equipment, the suction pull head 4 pulls the printing substrate 2 to make intermittent movements, and the suction pull head 4 sucks air from the inside, so that a negative pressure is formed between the surface of the suction pull head 4 and the printing substrate 2, and the printing substrate 2 is firmly adsorbed on the surface of the suction pull head 4, so that the printing substrate 2 does not deviate or move, and the positioning accuracy of the printed product can be better controlled. A wind shield ring assembly is set in the suction pull head 4, and the spacing of the wind shield ring assembly can be adjusted according to the width of the printing substrate 2, so as to adjust the suction range of the suction pull head 4 and reduce wind power and energy waste.

[0091] Embodiment 2:

[0092] like Figure 1-6 As shown, based on the above-mentioned embodiment 1, a printing structure also includes: a servo motor 7, the servo motor 7 is installed on the outside of the slider box 1, the output end of the servo motor 7 is connected to a reducer 8, and the output end of the reducer 8 is connected to one end of the suction slider 4 through a coupling 9.

[0093] The working principle and beneficial effects of the above technical solution are:

[0094] When the printing mechanism is in use, the servo motor 8 is used as the power source, the servo motor 7 provides rotational power to control the rotation direction, the servo motor 7 drives the reducer 8, the reducer 8 drives the coupling 9, the coupling 9 drives the suction pull head 4 to rotate, and the printing substrate 2 is driven by the suction pull head 4 to intermittently move, thereby realizing intermittent feeding of the printing substrate 2.

[0095] Embodiment 3:

[0096] like Figure 1-6 As shown, based on the above embodiment 1, the paper pressing roller mechanism 6 includes:

[0097] A paper pressing roller frame 11, one end of which is rotatably connected to the slider box 1, and the other end of which is connected to a roller 12;

[0098] A press roller 13, which is mounted on the press roller frame 11 and is located outside the suction pull head 4, and a press channel is formed between the press roller 13 and the suction pull head 4 for the printing substrate 2 to pass through;

[0099] A spring seat 14, which is connected to the inner wall of the slider housing 1 and is located outside one end of the slider housing 1 close to the roller 12;

[0100] Spring 15, spring 15 is connected between spring seat 14 and paper pressing roller frame 11;

[0101] The cylinder 16 is installed on the outside of the slider box 1;

[0102] The connecting rod 17 has one end connected to the output end of the cylinder 16 and the other end connected to the rotating block 18. The rotating block 18 is rotatably connected to the side wall of the slider box 1, and a notch is provided on the rotating block 18. The roller 12 is rotatably provided on the rotating block 18.

[0103] The working principle and beneficial effects of the above technical solution are:

[0104] The press roller mechanism 6 is symmetrically arranged on both sides of the slider housing 1, and the two cylinders 16 on both sides act synchronously. When the printing substrate 2 is fed, the output end of the cylinder 16 is started to act, and the rotating block 18 is driven to rotate through the connecting rod 17, so that the notch of the rotating block 18 rotates to the upper side. Under the elastic force of the spring 15, the roller 12 keeps in contact with the notch above the rotating block 18, so that the height of one end of the press roller frame 11 where the roller 12 is arranged is reduced, and the press roller 13 is lowered accordingly, and the gap of the pressing channel is reduced, and the press roller 13 applies pressure to the printing substrate 2 and presses it stably.

[0105] When the printing substrate 2 passes through the suction pull head 4, the cylinder 16 is started to move in the reverse direction, so that the roller 12 contacts the part of the rotating block 18 where no notch is set, so that the height of one end of the paper pressing roller frame 11 where the roller 12 is set rises, and the paper pressing roller 13 rises accordingly, and the gap of the pressing channel increases, so that the printing substrate 2 is in a de-pressurized state.

[0106] During operation of the equipment, the compression amount of the spring 15 can be adjusted through the spring seat 14, thereby adjusting the size of the pressing force of the printing substrate 2 on the power pulling head roller; when the compression amount of the spring 15 is adjusted, it can be adjusted by adjusting the position of the spring seat 14, or adjusting the position of the end of the spring 15 in the spring seat 14.

[0107] Embodiment 4:

[0108] like Figure 7-11 As shown, based on the above embodiment 1, the air suction slider 4 includes:

[0109] The air suction pull head roller 21, both ends of the air suction pull head roller 21 are rotatably connected to the side wall of the pull head box 1, and one end of the air suction pull head roller 21 is connected to the coupling 9;

[0110] The deep groove ball bearing 1 22 and the deep groove ball bearing 23 are respectively arranged between the two ends of the suction slider roller 21 and the slider box 1 .

[0111] The suction slider roller 21 is drilled with a plurality of small holes along the circumferential direction, and the small holes are connected with the inner cavity of the suction slider roller 21 . The other end of the suction slider roller 21 is connected to the exhaust fan 25 through the air duct 24 . The exhaust fan 25 is installed on the outer wall of the slider box 1 , and the printed substrate 2 is adsorbed on the suction slider roller 21 .

[0112] The working principle and beneficial effects of the above technical solution are:

[0113] Deep groove ball bearing 1 22 and deep groove ball bearing 23 are installed at both ends of the suction pull head roller 21, which can provide fixed support for the suction pull head roller 21 and ensure the flexible rotation of the suction pull head roller 21. The entire suction pull head roller 21 is installed in the pull head box 1 and limits the axial movement of the suction pull head roller 21.

[0114] The small holes on the surface of the suction roller 21 are connected to the inner cavity, and the exhaust fan 25 sucks the air in the suction roller 21 through the air duct 24 to form a negative pressure at the small holes, so that the printed substrate 2 is firmly adsorbed on the cylindrical surface of the suction roller 21.

[0115] Embodiment 5:

[0116] like Figure 7-11 As shown, based on the above-mentioned embodiment 4, the air suction slider 4 further includes:

[0117] The air duct shaft 26 is concentrically arranged inside the air suction pull head roller 21, and a gap is provided between the air duct shaft 26 and the inner wall of the air suction pull head roller 21. The air duct shaft 26 is provided with a long strip of air outlet 33 along the axial direction, and the air outlet 33 corresponds to the printing substrate 2 between the two sets of paper pressing roller mechanisms 6;

[0118] Deep groove ball bearing three 27 and deep groove ball bearing four 28, deep groove ball bearing three 27 and deep groove ball bearing four 28 are respectively installed at both ends of the air duct shaft 26, deep groove ball bearing three 27 is connected to the suction pull head roller 21, deep groove ball bearing four 28 extends out of the suction pull head roller 21 and is connected to the bearing end cover 29, and a set screw 31 is provided on the bearing end cover 29;

[0119] The air duct locking ring 32 is installed on the air duct shaft 26 and arranged between the air suction pull head roller 21 and the bearing end cover 29 . The set screw 31 is connected to the air duct locking ring 32 .

[0120] The working principle and beneficial effects of the above technical solution are:

[0121] The air duct shaft 26 is installed inside the suction pull head roller 21 through deep groove ball bearings 3 27 and 4 28, and its axial movement is limited. A certain gap is set between the outer circle of the air duct shaft 26 and the inner wall of the suction pull head roller 21, so that it can rotate in the suction pull head roller 21. The cylindrical surface of the air duct shaft 26 is provided with a long strip of air outlet 33, which can limit the range of the small hole that generates negative pressure, thereby limiting the area of ​​the printing substrate 2 adsorbed on the cylindrical surface of the suction pull head roller 21, forming local adsorption.

[0122] The air duct locking ring 32 is installed on the air duct shaft 26. Rotating the air duct locking ring 32 drives the air duct shaft 26 to rotate, and the position of the air outlet 33 on the suction head roller 21 can be adjusted to correspond to the printing substrate 2 between the two sets of paper pressing roller mechanisms 6. The air duct locking ring 32 is fixed to prevent rotation through two set screws 31 installed on the bearing end cover 29.

[0123] Embodiment 6:

[0124] like Figure 7-11 As shown, based on the above embodiment 5, the air suction slider 4 also includes:

[0125] A T-shaped lead screw 34 is concentrically arranged inside the air duct shaft 26. Screws with opposite rotation directions are arranged on both sides of the T-shaped lead screw 34. The wind shielding ring assembly is screwed onto the T-shaped lead screw 34. The T-shaped lead screw 34 is hollow and has an air extraction hole 35 in the middle. The air extraction hole 35 is connected to the air duct shaft 26 cavity. One end of the T-shaped lead screw 34 is blocked, and the other end extends out of the bearing end cover 19 to connect with the air duct 24.

[0126] Needle bearing 1 36 and needle bearing 2 37, needle bearing 1 36 and needle bearing 2 37 are respectively connected between the two ends of the T-shaped lead screw 34 and the air duct shaft 26;

[0127] The lead screw fixing plate 45 is connected to one end of the T-shaped lead screw 34 extending out of the bearing end cover 19 and is used to lock the T-shaped lead screw 34 and the bearing end cover 29 .

[0128] The wind deflector assembly includes:

[0129] T-nuts 41, two T-nuts 41 are respectively screwed on the left and right threads of the T-screw 34;

[0130] A wind shield ring 42, which is installed on the outside of the T-nut 41;

[0131] A guide wear-resistant ring 43, which is installed on the outside of the wind shield ring 42 and is slidably connected to the inner wall of the air duct shaft 26;

[0132] The wear-resistant guide block 44 is connected to a side of the guide wear-resistant ring 43 close to the air outlet 33 , and the wear-resistant slider 44 is slidably connected to the air outlet 33 .

[0133] The working principle and beneficial effects of the above technical solution are:

[0134] Loosen the screw fixing plate 45 to unlock the T-screw 34, rotate the T-screw 34 to make it rotate inside the air duct shaft 26, and the needle bearing 1 36 and the needle bearing 2 37 provide support for the T-screw 34 and ensure its flexible rotation; the T-screw 34 is provided with a left-handed screw on one side and a right-handed screw on the other side, and drives the two T-nuts 41 to move in opposite directions through the thread transmission, and the T-nut 41 drives the wind shield ring 42 to move synchronously, and adjusts the spacing between the two wind shield rings 42 according to the width of the printing substrate 2, thereby adapting to different printing substrates 2 and ensuring the effectiveness of adsorption. The guide wear-resistant ring 43 slides along the inner wall of the air duct shaft 26 to improve the wear resistance of the wind shield ring 42; the wear-resistant guide block 44 slides along the air outlet 33, guiding the movement of the wind shield ring 42 and improving the wear resistance of the wind shield ring 42.

[0135] The operation of the exhaust fan 25 generates a suction force, and the air in the suction pull head roller 21 enters the air duct shaft 26 through the air port 33, and then enters the T-shaped lead screw 34 through the exhaust hole 35, so that the air in the suction pull head roller 21, the air duct shaft 26 and the T-shaped lead screw 34 is sucked out through the air duct 24, thereby forming a negative pressure between the surface of the suction pull head roller 21 and the printing substrate 2, so that the printing substrate 2 is firmly adsorbed on the surface of the suction pull head 21 roller.

[0136] Embodiment 7:

[0137] like Figure 12-16 As shown, on the basis of the above-mentioned embodiment 2, the ends of the paper feeding roller 1 3 and the paper feeding roller 2 5 are provided with a shock-absorbing end cover 51, and the shock-absorbing end cover 51 is installed on the slider box body 1, and the shock-absorbing end cover 51 includes:

[0138] A transmission groove 52, which is arranged at the center of the shock-absorbing end cover 51;

[0139] A first support plate 53, which is disposed at the center of the transmission groove 52 and abuts against the end of the paper feed roller;

[0140] End cover support rods 54, three end cover support rods 54 are evenly connected to the edge of the first support plate 53, the end cover support rods 54 are L-shaped, the outer wall of the end cover support rods 54 is slidably connected to the transmission groove 52, and the bending section of the end cover support rods 54 is located on a side close to the bottom of the transmission groove 52;

[0141] The wire wheel 55 is rotatably connected to the shock-absorbing end cover 51 , a coil spring is arranged on the rotating shaft of the wire wheel 55 , and the end of the connecting wire on the wire wheel 55 extends into the transmission groove 52 and is connected to the end cover support rod 54 .

[0142] The working principle and beneficial effects of the above technical solution are:

[0143] When the suction slider 4 is in use, the suction force is generated by the rotation of the fan blades in the exhaust fan 25. The exhaust fan 25 will generate vibration during operation. The vibration is transmitted to the paper roller, which can easily cause the paper roller to shake, causing the printed substrate 2 to deviate, affecting the adsorption and feeding effect of the printed substrate 2. A shock-absorbing end cover 51 is set at the end of the paper roller, and the two ends of the paper roller are installed in the shock-absorbing end cover 51 and rotate relative to the shock-absorbing end cover 51; when installing the paper roller, the paper roller is placed between the two side walls of the slider box 1, and the end of the paper roller is inserted into the side wall through hole of the slider box 1. The shock-absorbing end cover 51 is placed on the outside of the slider box 1, and the end of the paper roller is aligned with the first support plate 53 in the transmission groove 52, and the first support plate 53 is squeezed to drive the end cover support rod 54 to slide in the transmission groove 52 until the end of the paper roller contacts the inner wall of the transmission groove 52, and the shock-absorbing end cover 51 is fixed to the slider. When the first support plate 53 moves, the wire wheel 55 is pulled to rotate, and the coil spring on its rotating shaft is energized, so that the first support plate 53 can be tightly attached to the end of the paper feed roller. When the printing structure is running, the end of the paper feed roller can rotate in the transmission groove 52 and remain stable. Under the pull of the connecting line, there is a gap between the first support plate 53 and the main body of the shock-absorbing end cover 51, which effectively blocks the transmission of vibration waves. Part of the vibration waves are transmitted to the first support plate 53 and are quickly dissipated under the elastic force of the coil spring, thereby reducing the jitter of the paper feed roller and effectively improving the accuracy of the position of the printing substrate 2.

[0144] Embodiment 8:

[0145] like Figure 12-16 As shown, based on the above-mentioned embodiment 7, the first support plate 53 includes:

[0146] A limiting rod 56, wherein the limiting rod 56 is slidably connected to the first support plate 53, and one end of the limiting rod 56 protrudes from the first support plate 53 and engages with a limiting hole on the side of the transmission groove 52;

[0147] A fixing ring 57, which is connected to the limiting rod 56 and is slidably connected to the cavity of the first support plate 53. A spring is sleeved on the limiting rod 56, and the spring is connected between the fixing ring 58 and the inner wall of the cavity of the first support plate 53;

[0148] A first wedge plate 58, the first wedge plate 58 is connected to the other end of the limiting rod 57;

[0149] A top block 59, the top block 59 is slidably connected to the first support plate 53, and one end of the top block 59 protrudes from the first support plate 53 and is connected to the paper feed roller;

[0150] The second wedge plate 61 is connected to the other end of the top block 59 , and the inclined surface of the second wedge plate 61 slides relative to the inclined surface of the first wedge plate 58 .

[0151] The working principle and beneficial effects of the above technical solution are:

[0152] When the end of the paper feeding roller presses the first support plate 53 into the transmission groove 52, the end of the paper feeding roller contacts the top block 59 first, and the end of the paper feeding roller presses the top block 59 into the first support plate 53. The second wedge plate 61 on the top block 59 slides relative to the first wedge plate 58, and the first wedge plate 58 pulls the limiting rod 56 to retract into the first support plate 53, and engages with the limiting hole on the side of the transmission groove 52, and contacts and limits the first support plate 53, so that it can continue to move into the transmission groove 52. When the shock-absorbing end cover 51 is disassembled, the shock-absorbing end cover 51 is first separated from the slider box 1, and the connecting line is quickly reeled under the action of the coil spring, pulling the first support plate 53 to move out of the transmission groove 52. The setting of the limiting rod 56 can effectively prevent the first support plate 53 from falling out of the transmission groove 52; and the moving range of the first support plate 53 is limited during vibration, reducing the axial movement of the first support plate 53.

[0153] Embodiment 9:

[0154] like Figure 12-16 As shown, on the basis of the above-mentioned embodiment 8, a second support plate 62 is provided, the second support plate 62 is located inside the first support plate 53, and is slidably connected to the end cover support rod 54, and a spring is connected between the first support plate 53 and the second support plate 62;

[0155] A flexible pad 63, the flexible pad 63 is connected between the edges of the first support plate 53 and the second support plate 62, the flexible pad 63 is in a bent state and abuts against the inner wall of the transmission groove 52;

[0156] The push rod 64 is connected to the second support plate 62 and passes through the center of the first support plate 53 . The length of the push rod 64 protruding from the first support plate 53 is greater than the length of the push block 59 protruding from the first support plate 53 .

[0157] The working principle and beneficial effects of the above technical solution are:

[0158] When the end of the paper feeding roller presses the first support plate 53 into the transmission groove 52, since the length of the push rod 64 protruding from the first support plate 53 is greater than the length of the push block 59 protruding from the first support plate 53, the end of the paper feeding roller contacts the push rod 64 first, and the end of the paper feeding roller presses the push rod 64 into the first support plate 53. The push rod 64 drives the second support plate 62 to slide inward, thereby increasing the distance between the first support plate 53 and the second support plate 62, storing energy for the spring stretching therebetween, and stretching the flexible pad 63 to reduce the friction between the flexible pad 63 and the inner wall of the transmission groove 52, thereby ensuring that the first support plate 53 can move flexibly; at the same time, the vibration waves transmitted from all around the transmission groove 52 are partially absorbed after passing through the flexible pad 63, which can further reduce the shaking of the first support plate 53 and improve the stability of the paper feeding roller rotation process.

[0159] Embodiment 10:

[0160] like Figure 12-16 As shown, based on the above-mentioned embodiment 9, a leveling mechanism is provided between the top rod 64 and the second support plate 62, and the leveling mechanism includes:

[0161] The sphere 65, the sphere 64 is connected to the center of the second support plate 62, and the second support plate 62 can rotate relative to the sphere 64;

[0162] A conical seat 66 connected to the center of the top rod 64 near one end of the second support plate 62;

[0163] The screw 67 is rotatably connected between the ball 65 and the inner wall of the conical seat 66;

[0164] A connecting rod 68, the connecting rod 68 is supported and connected between the inner wall of the conical seat 66 and the sphere 65, and a plurality of connecting rods 68 are evenly arranged along the circumference of the conical seat 66;

[0165] A nut 69, the nut 69 is screwed onto the screw rod 67;

[0166] A tension spring 71, the tension spring 71 is connected between the nut 68 and a lug 72 on the side of the second support plate 62;

[0167] The leveling rod 72 is rotatably disposed in the top rod 64. One end of the leveling rod 72 is connected to the screw rod 67, and the other end extends to the groove at the end of the top rod 64 and is connected to the adjustment block 73.

[0168] The working principle and beneficial effects of the above technical solution are:

[0169] After long-term use, the elasticity of the flexible pad 63 decreases, and the ability to restore deformation decreases, which may hinder the movement of the second support plate 62 and cause the second support plate 62 to deflect. By setting a leveling mechanism, after a period of use, the rotating adjustment block 73 drives the leveling rod 72 to rotate, so that the screw 67 rotates accordingly, and the screw 67 and the nut 69 are threadedly transmitted. The nut 69 can move along the screw 67 under the pull of the tension spring 71. During the movement, the nut 69 stretches the tension spring 71 to make it have greater elasticity. The other end of the tension spring 71 pulls the second support plate 62 to restore it to a balanced state, and the flexible pad 63 can be replaced. Through the above structural design, the balance adjustment of the second support plate 62 is effectively achieved, so that the second support plate 62 and the top rod 64 are always kept in a vertical state, reducing the obstruction of the flexible pad 63 to the movement of the second support plate 62, and improving the transmission stability of the paper feed roller.

[0170] The invention also provides a printing machine comprising the printing structure.

[0171] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0172] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0173] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A printing structure, characterized in that include: A slider box body (1), wherein the inner wall of the slider box body (1) is provided with a first paper feed roller (3), a suction slider (4) and a second paper feed roller (5) in sequence along the feeding direction of the printing substrate (2); A paper pressing roller mechanism (6), two sets of paper pressing roller mechanisms (6) are connected to the inner wall of the slider box (1), and are respectively arranged close to the first paper feeding roller (3) and the second paper feeding roller (5), and the paper pressing roller mechanism (6) presses the printed substrate (2) onto the suction slider (4); A wind shielding ring assembly is movably arranged on the inner wall of the air suction pull head (4) and is used to adjust the air suction range of the air suction pull head (4).

2. A printing structure according to claim 1, characterized in that Also includes: A servo motor (7) is installed outside the slider housing (1), the output end of the servo motor (7) is connected to a reducer (8), and the output end of the reducer (8) is connected to one end of the suction slider (4) through a coupling (9).

3. A printing structure according to claim 1, characterized in that The paper pressing roller mechanism (6) comprises: A paper pressing roller frame (11), one end of the paper pressing roller frame (11) is rotatably connected to the slider box (1), and the other end is connected to a roller (12); A paper pressing roller (13), the paper pressing roller (13) is mounted on the paper pressing roller frame (11) and is located outside the air suction pull head (4), and a pressing channel is formed between the paper pressing roller (13) and the air suction pull head (4) for the printing substrate (2) to pass through; A spring seat (14), the spring seat (14) is connected to the inner wall of the slider box (1) and is located outside one end of the slider box (1) close to the roller (12); A spring (15) is connected between the spring seat (14) and the paper pressing roller frame (11).

4. A printing structure according to claim 1, characterized in that The paper pressing roller mechanism (6) further comprises: A cylinder (16), the cylinder (16) is installed on the outside of the slider box (1); A connecting rod (17) is provided, one end of the connecting rod (17) is connected to the output end of the cylinder (16), and the other end is connected to a rotating block (18). The rotating block (18) is rotatably connected to the side wall of the slider box body (1), and a notch is provided on the rotating block (18). The roller (12) is rotatably provided on the rotating block (18).

5. A printing structure according to claim 2, characterized in that The air suction pull head (4) comprises: An air suction pull head roller (21), both ends of which are rotatably connected to the side wall of the pull head box (1), and one end of the air suction pull head roller (21) is connected to the coupling (9); A deep groove ball bearing (22) and a deep groove ball bearing (23) are respectively arranged between the two ends of the air suction slider roller (21) and the slider box (1).

6. A printing structure according to claim 5, characterized in that The suction slider roller (21) is drilled with a plurality of small holes along the circumferential direction, and the small holes are connected to the inner cavity of the suction slider roller (21). The other end of the suction slider roller (21) is connected to the exhaust fan (25) through the air duct (24). The exhaust fan (25) is installed on the outer wall of the slider box (1), and the printed substrate (2) is adsorbed on the suction slider roller (21).

7. A printing structure according to claim 6, characterized in that The air suction pull head (4) also includes: The air duct shaft (26) is coaxially arranged inside the air suction pull head roller (21), and a gap is provided between the air duct shaft (26) and the inner wall of the air suction pull head roller (21). The air duct shaft (26) is provided with a long strip air outlet (33) along the axial direction, and the air outlet (33) corresponds to the printing substrate (2) between the two sets of paper pressing roller mechanisms (6); Deep groove ball bearing three (27) and deep groove ball bearing four (28), deep groove ball bearing three (27) and deep groove ball bearing four (28) are respectively installed at two ends of the air duct shaft (26), deep groove ball bearing three (27) is connected to the air suction pull head roller (21), deep groove ball bearing four (28) extends out of the air suction pull head roller (21) and is connected to the bearing end cover (29), and a fixing screw (31) is provided on the bearing end cover (29); The air duct locking ring (32) is installed on the air duct shaft (26) and arranged between the air suction pull head roller (21) and the bearing end cover (29). The set screw (31) is connected to the air duct locking ring (32).

8. A printing structure according to claim 7, characterized in that The air suction pull head (4) also includes: A T-shaped lead screw (34) is coaxially arranged inside the air duct shaft (26), and screw threads with opposite rotation directions are arranged on both sides of the T-shaped lead screw (34). The wind shielding ring assembly is screwed onto the T-shaped lead screw (34); the T-shaped lead screw (34) is hollow and has an air extraction hole (35) in the middle, the air extraction hole (35) is connected to the cavity of the air duct shaft (26), one end of the T-shaped lead screw (34) is blocked, and the other end extends out of a bearing end cover (19) to be connected to the air duct (24); Needle bearing 1 (36) and needle bearing 2 (37), needle bearing 1 (36) and needle bearing 2 (37) are respectively connected between the two ends of the T-shaped lead screw (34) and the air duct shaft (26); The screw fixing plate (45) is connected to one end of the T-shaped screw (34) extending out of the bearing end cover (19) and is used to lock the T-shaped screw (34) and the bearing end cover (29).

9. A printing structure according to claim 8, characterized in that The wind deflector assembly includes: T-shaped nuts (41), two T-shaped nuts (41) are respectively screwed on the left thread and the right thread of the T-shaped lead screw (34); A wind shield ring (42), the wind shield ring (42) is installed on the outside of the T-shaped nut (41); A guide wear-resistant ring (43), which is mounted on the outside of the wind shielding ring (42) and is slidably connected to the inner wall of the wind pipe shaft (26); A wear-resistant guide block (44) is connected to a side of the guide wear-resistant ring (43) close to the air outlet (33), and the wear-resistant slider (44) is slidably connected to the air outlet (33).

10. A printing press, characterized in that: Contains a printed structure as described in any one of claims 1-9.

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