A packaging carton printing machine

Abstract

The present invention relates to the technical field of printing machines, and discloses a packaging carton printing machine, including a feeding mechanism, including a bracket 1, a material storage box is arranged on the top of the bracket 1, a pressure roller 1 is rotatably arranged on the top of the material storage box, and an elastic support device is arranged at the bottom of the material storage box; a flattening mechanism is arranged on one side of the discharge port, including a bracket 2, a fixed frame is movably arranged on the top of the bracket 2, a lower bottom plate is horizontally arranged in the fixed frame, an upper pressure plate is lifted and lowered on the upper part of the lower bottom plate, a plurality of parallel slots are arranged in the middle of the lower bottom plate, a conveying mechanism is arranged in the slot, and a printing mechanism is arranged on the other side of the flattening mechanism for printing the carton. In the present invention, after the carton is output from the material storage box and before it reaches the printing mechanism, the lower pressure plate always exerts pressure on it, and the upper pressure plate is in direct hard contact with the lower bottom plate, and can withstand greater pressure, thereby ensuring the flattening quality.

Description

Technical Field

[0001] The invention relates to the technical field of printing machines, in particular to a packaging carton printing machine. Background Art

[0002] Cartons are the most widely used packaging products. According to different materials, there are corrugated boxes and single-layer cardboard boxes, etc., with various specifications and models. Packaging cartons are made of paper products and are used to pack various items. Cartons have the characteristics of low cost, easy packaging, suitable for adding fillers, and cleanliness. They are suitable for product factory packaging, item transportation, and material sorting. After the packaging carton is prepared, it is sometimes necessary to supplement the printing on the four sides of the carton according to customer needs, such as product name, company label, factory date, anti-counterfeiting mark and other information.

[0003] A carton printing machine is a printing device that can print the required text, pattern and other information on the surface of a carton body. It generally includes process flows such as plate mounting, inking, embossing and paper feeding. Chinese patent CN117944365B discloses a carton full bottom printing device and a printing method, wherein a carton full bottom printing device comprises a support frame, wherein the support frame is provided with a printing mechanism and a drying mechanism in sequence on one side of a fixed frame, wherein the support frame is connected with a conveying mechanism, and further comprises: a belt leveling mechanism, wherein the belt leveling mechanism is connected with the fixed frame, wherein a bottom plate is provided between the belt leveling mechanism, wherein a limiting component is provided between the bottom plate and the fixed frame, and wherein the bottom plate is close to the conveying mechanism; the invention provides a carton full bottom printing device, wherein the bottom plate drives a pressure plate to contact with a leveling belt, and then the pressure plate pushes the leveling belt to press down and level the paperboard, and through the continuous rotation of the No. 1 gear, the pressure plate can be driven to push the leveling belt to reciprocate and level the carton.

[0004] The technical solution provided by the above patent is to drive the pressure plate to contact the leveling belt through the bottom plate, and then the pressure plate pushes the leveling belt to press the cardboard down and level it. This leveling method requires ensuring the sliding between the pressure plate and the bottom plate, so the downward pressure will be limited and cannot provide sufficient downward pressure for leveling operations. At the same time, since the pressure plate needs to be reset, it cannot perform leveling operations for a long time within a limited working range, affecting the quality of leveling. Summary of the invention

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A packaging carton printing machine, comprising:

[0007] The feeding mechanism comprises a bracket 1, a material storage box is arranged on the top of the bracket 1, a material discharge port is arranged on one side of the top of the material storage box, a pressure roller 1 is rotatably arranged on the top of the material storage box, and an elastic supporting device is arranged at the bottom of the material storage box;

[0008] The flattening mechanism is arranged on one side of the discharge port, including a bracket 2, a fixed frame is movably arranged on the top of the bracket 2, a lower bottom plate is horizontally arranged in the fixed frame, an upper pressing plate is lifted and lowered on the upper part of the lower bottom plate, and a limiting mechanism is arranged on the side of the lower bottom plate away from the feeding mechanism, the limiting mechanism includes a bracket 4, a baffle is rotatably arranged on the upper end of the bracket 4, a limiting block is arranged on the inner side of the bracket 4 and on the right side of the baffle, a contact switch 2 is arranged on the side of the limiting block facing the baffle, a bracket 5 is arranged on the side of the printing mechanism facing the baffle, a back plate is horizontally arranged on the top of the bracket 5, the back plate points to the lower side of the rotating position of the baffle, a contact switch 3 connected by an elastic telescopic rod is arranged at the front end of the back plate, a plurality of parallel slots are arranged in the middle part of the lower bottom plate, a conveying mechanism is arranged in the slot, a mounting hole 1 is arranged on the inner side of the limiting mechanism on the lower bottom plate, a photoelectric switch is arranged in the mounting hole 1, and a contact switch 1 is arranged on the left side of the lower bottom plate;

[0009] The printing mechanism is arranged on the other side of the flattening mechanism and is used to print on the cartons.

[0010] A plurality of slide rails are arranged in parallel on the second bracket, rollers are arranged at the bottom of the fixed frame corresponding to the slide rails, a threaded hole is arranged horizontally at the bottom of the fixed frame, a screw rod 1 is arranged in the threaded hole, one end of the screw rod 1 is connected to the output end of the driving motor 1 on the second bracket, a plurality of lifting mechanisms 1 are arranged vertically and evenly at the edge of the lower bottom plate, and the other end of the lifting mechanism 1 is connected to the upper pressing plate,

[0011] The lower bottom plate is also provided with a second mounting hole at one end close to the feeding mechanism, and a distance measuring instrument is arranged in the second mounting hole.

[0012] Preferably, the bracket 2 is also provided with a transmission box, and the transmission box includes a box body, in which a first wall and a second wall are vertically arranged at intervals, and a first rotating shaft is horizontally arranged on the upper part of the box body, one end of the first rotating shaft is connected to the output end of the driving motor 1, a gear 1 is arranged on the first rotating shaft between the left wall and the first wall, a gear 2 is arranged on the first rotating shaft between the right wall and the second wall, a second rotating shaft is arranged below the first rotating shaft and between the left wall and the first wall, a needle roller bearing 1 is arranged on the second rotating shaft, a spline sleeve 1 is arranged on the outer side of the needle roller bearing 1, a gear 3 is arranged on the outer sleeve of the spline sleeve 1, and the gear 3 is meshed with the gear 1, and a spline 1 is also arranged on the second rotating shaft, a sliding gear 1 is slidably arranged on the spline 1, a connecting hook 1 is arranged on the side of the sliding gear 1 facing the gear 3, a groove 1 is arranged on the corresponding connecting hook 1 on the gear 3, a shift fork 1 is arranged on the sliding gear, and the other end of the shift fork 1 is connected to a driving rod 1 arranged on the outer side of the box body,

[0013] A third rotating shaft is arranged below the first rotating shaft and between the right wall and the second wall. A needle roller bearing 2 is arranged on the third rotating shaft. A spline sleeve 2 is arranged outside the needle roller bearing 2. A gear 4 is arranged outside the spline sleeve 2. The gear 4 meshes with the gear 2. A spline 2 is also arranged on the second rotating shaft. A sliding gear 2 is slidably arranged on the spline 2. A connecting hook 2 is arranged on the side of the sliding gear 2 facing the gear 4. A groove 2 is arranged on the gear 4 corresponding to the connecting hook 2. A shift fork 2 is arranged on the sliding gear 2. The other end of the shift fork 2 is connected to a driving rod 2 arranged outside the box body.

[0014] The second rotating shaft extends from the left side of the box body and is connected to the transmission assembly, the transmission assembly is drivingly connected to the first pressure roller, and the second rotating shaft extends from the right side of the box body and is connected to the first screw.

[0015] Preferably, the transmission assembly includes a rotating shaft bracket 1, a fourth rotating shaft is horizontally arranged on the rotating shaft bracket 1, a bevel gear 1 is arranged at one end of the fourth rotating shaft, a bevel gear 2 is arranged at the left end of the rotating shaft 2, bevel gear 1 and bevel gear 2 are meshed with each other, a pulley 1 is arranged at the other end of the fourth rotating shaft, a pulley 2 is arranged at one end of the pressure roller 1, and pulley 1 and pulley 2 are connected by belt drive.

[0016] Preferably, a pressure roller 2 is rotatably arranged at the lower outer side of the discharge port through a bracket 3, a pulley 3 is arranged at one end of the pressure roller 2, a pulley 4 is coaxially arranged on the fourth rotating shaft, and the pulley 3 and the pulley 4 are connected by a belt transmission.

[0017] Bracket three includes a symmetrically arranged support arm, which includes a rotating shaft seat 1 and a base 1. Slide sleeves are vertically arranged on both sides of the rotating shaft seat 1, and screw rod 2 is arranged in the slide sleeve. The bottom end of screw rod 2 is connected to base 1, and a limiting nut is arranged on screw rod 2.

[0018] Preferably, the conveying mechanism includes a base 2, a rotating shaft seat 2 is provided at both ends of the base 2 corresponding to the slot, a pulley 5 is rotatably provided at the top of the rotating shaft seat 2, the base 2 is arranged on the bracket 2 through the lifting mechanism 2, the pulley 5 includes two symmetrically arranged wheel bodies, a connecting shaft is provided between the two wheel bodies, a sprocket 1 is provided on the connecting shaft, a rotating shaft seat 3 is provided below the same side of several slots, a rotating shaft 5 is provided in several rotating shaft seats 3, a sprocket 2 is provided at the position corresponding to the sprocket 1 on the rotating shaft 5, the sprocket 1 and the sprocket 2 are driven by a chain, one end of the rotating shaft 5 is connected to the output end of the driving motor 2, and the wheel bodies on the same side of the two ends of the slot are connected by a conveyor belt drive.

[0019] Preferably, a flap is rotatably provided below one side of the slot, and an arc-shaped connecting arm is provided at one end of the flap, and one end of the connecting arm is rotatably connected to the bottom of the lower base plate, and the area of ​​the flap is matched with the area of ​​the slot, and an air cylinder 1 is provided at the bottom of the lower base plate, and a piston 1 is provided in the air cylinder 1, and a push rod 1 is connected to the outward end of the piston 1, and the push rod 1 is rotatably connected to the connecting rod, and the other end of the connecting rod is rotatably connected to the bottom of the flap, and an air cylinder 2 is vertically provided below the base 2, and a piston 2 is provided in the air cylinder 2, and a push rod 2 is provided at the upper end of the piston 2, and the upper end of the push rod 2 is connected to the base, and the bottom of the air cylinder 2 is connected through an air pipe through the end of the air cylinder 1 away from the push rod 1.

[0020] Preferably, the elastic supporting device comprises a bearing plate, a plurality of springs are arranged at the bottom of the bearing plate, and the other end of the spring is connected to the bottom of the storage box.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, after the carton is output from the material storage box and before it reaches the printing mechanism, the lower pressing plate always exerts pressure on it, and the upper pressing plate is in direct hard contact with the lower bottom plate, which can withstand greater pressure, thereby ensuring the flattening quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 for Figure 1 Partial schematic diagram at point A in the middle;

[0025] Figure 3 for Figure 1 Partial schematic diagram at B in the middle;

[0026] Figure 4 for Figure 1 Partial schematic diagram at C in the middle;

[0027] Figure 5 for Figure 1 The local schematic diagram of point D in the middle;

[0028] Figure 6 A top view of the lower base plate of the present invention;

[0029] Figure 7 for Figure 6 Partial schematic diagram at E in the middle;

[0030] Figure 8 It is a cross-sectional view of the transmission case of the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the conveying mechanism of the present invention;

[0032] Fig.10This is a schematic diagram of the structure of the feeding mechanism of Embodiment 2 of the present invention;

[0033] Fig.11 This is a schematic diagram of the flap and driving structure of Example 3 of the present invention.

[0034] In the figure: 1, printing mechanism; 2, bracket 1; 3, material storage box; 4, material outlet; 5, pressure roller 1; 6, bearing plate; 7, spring; 8, bracket 2; 9, fixing frame; 10, lower bottom plate; 11, upper pressure plate; 12, notch; 13, mounting hole 1; 14, photoelectric switch; 15, slide rail; 16, roller; 17, threaded hole; 18, screw 1; 19, lifting mechanism 1; 20, mounting hole 2; 21, distance measuring instrument; 22, box; 23, first wall; 24, second wall; 25, first rotating shaft ; 26, drive motor 1; 27, gear 1; 28, gear 2; 29, second shaft; 30, needle bearing 1; 31, spline sleeve 1; 32, gear 3; 33, spline 1; 34, connecting hook 1; 35, groove 1; 36, fork 1; 37, drive rod 1; 38, third shaft; 39, needle bearing 2; 40, spline sleeve 2; 41, gear 4; 42, spline 2; 43, connecting hook 2; 44, groove 2; 45, fork 2; 46, drive rod 2; 47, shaft bracket; 48, fourth Rotating shaft; 49, first bevel gear; 50, second bevel gear; 51, pulley 1; 52, pulley 2; 53, bracket 4; 54, baffle; 55, limit block; 56, contact switch 2; 57, contact switch 1; 58, bracket 5; 59, stop plate; 60, contact switch 3; 61, base 2; 62, rotating shaft seat 2; 63, pulley 5; 63-1, wheel body; 63-2, connecting shaft; 63-3, sprocket 1; 64, rotating shaft seat 3; 65, rotating shaft 5; 66, sprocket 2; 67, driving motor Machine two; 68, bracket three; 68-1, support arm; 68-11, rotating shaft seat one; 68-12, base one; 68-13, sliding sleeve; 68-14, screw rod two; 68-15, limiting nut; 69, pressure roller two; 70, pulley three; 71, pulley four; 72, flap; 73, arc-shaped connecting arm; 74, air cylinder one; 75, piston one; 76, push rod one; 77, connecting rod; 78, air cylinder two; 79, piston two; 80, push rod two; 81, sliding gear one; 82, sliding gear two. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0038] like Figure 1-9 As shown, in this embodiment, a packaging carton printing machine includes a feeding mechanism, a flattening mechanism and a printing mechanism 1 which are arranged in sequence.

[0039] In this embodiment, the feeding mechanism includes a bracket 2, a storage box 3 is arranged on the top of the bracket 2, a discharge port 4 is arranged on one side of the top of the storage box 3, a pressure roller 5 is rotatably arranged on the top of the storage box 3, and an elastic support device is arranged at the bottom of the storage box 3.

[0040] In this embodiment, the elastic support device includes a bearing plate 6, a plurality of springs 7 are arranged at the bottom of the bearing plate 6, and the other end of the spring 7 is connected to the bottom of the storage box 3.

[0041] In this embodiment, the flattening mechanism is arranged on one side of the discharge port 4, and the printing mechanism 1 is arranged on the other side of the flattening mechanism for printing on the carton.

[0042] In this embodiment, the flattening mechanism includes a bracket 8, a fixed frame 9 is movably provided at the top of the bracket 8, a lower bottom plate 10 is horizontally provided in the fixed frame 9, an upper pressing plate 11 is lifted and lowered on the upper part of the lower bottom plate 10, and a limiting mechanism is provided on the side of the lower bottom plate 10 away from the feeding mechanism. In this embodiment, the limiting mechanism includes a bracket 4 53, a baffle 54 is rotatably provided on the upper end of the bracket 4 53, a limiting block 55 is provided on the inner side of the bracket 4 53 and on the right side of the baffle 54, and a limiting block 55 is provided on the side of the limiting block 55 facing the baffle 54. A contact switch 2 56 is provided, a bracket 58 is provided on the side of the printing mechanism 1 facing the baffle 54, a support plate 59 is horizontally provided on the top of the bracket 58, the support plate 59 points to the lower side of the rotation position of the baffle 54, a contact switch 3 60 connected by an elastic telescopic rod is provided at the front end of the support plate 59, a plurality of parallel slots 12 are provided in the middle of the lower bottom plate 10, a conveying mechanism is provided in the slot 12, a mounting hole 13 is provided on the inner side of the limit mechanism on the lower bottom plate 10, a photoelectric switch 14 is provided in the mounting hole 13,

[0043] In this embodiment, two slide rails 15 are arranged in parallel on the bracket 2 8, a plurality of rollers 16 are arranged at the bottom of the fixed frame 9 corresponding to the slide rails 15, a threaded hole 17 is arranged horizontally at the bottom of the fixed frame 9, a screw 18 is arranged in the threaded hole 17, a plurality of lifting mechanisms 19 are arranged vertically and evenly at the edge of the lower bottom plate 10, and the other end of the lifting mechanism 19 is connected to the upper pressing plate 11. In this embodiment, the lifting mechanism 19 is a hydraulic cylinder.

[0044] The lower bottom plate 10 is also provided with a second mounting hole 20 at one end close to the feeding mechanism, and a distance measuring instrument 21 is provided in the second mounting hole 20.

[0045] In this embodiment, a transmission box is also provided on the bracket 28, and the transmission box includes a box body 22, and a first wall body 23 and a second wall body 24 are spaced and vertically arranged in the box body 22. A first rotating shaft 25 is horizontally arranged on the upper part of the box body 22, and one end of the first rotating shaft 25 is connected to the output end of the driving motor 1 26. A gear 1 27 is arranged on the first rotating shaft 25 between the left box body 22 and the first wall 23, and a gear 2 28 is arranged on the first rotating shaft 25 between the right box body 22 and the second wall 24. A second rotating shaft 29 is arranged below the first rotating shaft 25 and between the left box body 22 and the first wall 23. The second rotating shaft 29 is provided with a needle bearing 30, a spline sleeve 31 is provided on the outer side of the needle bearing 30, a gear 32 is provided on the outer side of the spline sleeve 31, and the gear 32 is meshed with the gear 27. The second rotating shaft 29 is also provided with a spline 33, a sliding gear 81 is slidably provided on the spline 33, a connecting hook 34 is provided on the side of the sliding gear 81 facing the gear 32, a groove 35 is provided on the gear 32 corresponding to the connecting hook 34, a shift fork 36 is provided on the sliding gear 81, and the other end of the shift fork 36 is connected to a driving rod 37 provided on the outer side of the box body 22.

[0046] A third rotating shaft 38 is provided below the first rotating shaft 25 and between the right box body 22 and the second wall body 24. A needle roller bearing 2 39 is provided on the third rotating shaft 38. A spline sleeve 2 40 is provided on the outer side of the needle roller bearing 2 39. A gear 41 is provided on the outer sleeve of the spline sleeve 2 40. The gear 41 meshes with the gear 2 28. A spline 2 42 is also provided on the second rotating shaft 29. A sliding gear 2 82 is slidably provided on the spline 2 42. A connecting hook 2 43 is provided on the side of the sliding gear 2 82 facing the gear 4 41. A groove 2 44 is provided on the gear 41 corresponding to the connecting hook 2 43. A shift fork 2 45 is provided on the sliding gear 2 82. The other end of the shift fork 2 45 is connected to a driving rod 2 46 provided on the outer side of the box body 22. In this embodiment, the driving rod 1 37 and the driving rod 2 46 are both electrically controlled telescopic rods.

[0047] The second rotating shaft 29 extends from the left side of the box body 22 and is connected to the transmission assembly, and the transmission assembly is drivingly connected to the pressure roller 1 5. The third rotating shaft 38 extends from the right side of the box body 22 and is connected to the screw 18.

[0048] In this embodiment, the transmission assembly includes a rotating shaft bracket 47, a fourth rotating shaft 48 is horizontally arranged on the rotating shaft bracket 47, a first bevel gear 49 is arranged at one end of the fourth rotating shaft 48, a second bevel gear 50 is arranged at the left end of the second rotating shaft 29, the first bevel gear 49 and the second bevel gear 50 are meshed, a pulley 1 51 is arranged at the other end of the fourth rotating shaft 48, a pulley 2 52 is arranged at one end of the pressure roller 1 5, and the pulley 1 51 and the pulley 2 52 are connected by belt transmission.

[0049] In this embodiment, the conveying mechanism includes a base 61, and a rotating shaft seat 62 is provided at both ends of the base 61 corresponding to the slot 12, and a pulley 63 is rotatably provided at the top of the rotating shaft seat 62. The base 61 is set on the bracket 8 through the lifting mechanism 2, and the pulley 63 includes two symmetrically arranged wheel bodies 63-1, a connecting shaft 63-2 is provided between the two wheel bodies 63-1, and a sprocket 63-3 is provided on the connecting shaft 63-2. A rotating shaft seat 3 64 is provided at the lower part of the same side of several slots 12, and a rotating shaft 5 65 is provided in several rotating shaft seats 3 64. A sprocket 2 66 is provided at the position corresponding to the sprocket 1 63-3 on the rotating shaft 5 65. The sprocket 1 63-3 and the sprocket 2 66 are driven by a chain, and one end of the rotating shaft 5 65 is connected to the output end of the driving motor 2 67. The wheel bodies 63-1 on the same side of the two ends of the slot 12 are connected by a conveyor belt transmission.

[0050] The working principle of the above technical solution is:

[0051] When in use, the first step is to stack the cartons in the storage box 3, and use the elastic support device to ensure that the top layer of cartons is always in contact with the pressing roller 5;

[0052] The second step is to use the controller to start the driving motor 1 26, so that the driving motor 1 26 drives the first rotating shaft 25 to rotate, the first rotating shaft 25 drives the gear 1 27 and the gear 2 28 to rotate, the gear 1 27 drives the gear 3 32 to rotate, and the gear 2 28 drives the gear 4 41 to rotate;

[0053] The third step is to use the controller to control the lifting mechanism 2 to rise so that the size of the conveyor belt exposed from the notch 12 is 1 mm;

[0054] The fourth step is to use the controller to start the driving motor 2 67, so that the rotating shaft 5 65 drives the sprocket 2 66 to rotate, the sprocket 2 66 drives the sprocket 1 63-3 to rotate, the sprocket 1 63-3 drives the wheel body 63-1 to rotate, and the rotation of the wheel body 63-1 drives the conveyor belt to rotate.

[0055] The fifth step is to use the controller to control the movement of the driving rod 37, so that the connecting hook 34 on the sliding gear 81 is connected with the groove 35 on the gear 32, so that the gear 32 drives the sliding gear 81 to rotate, the sliding gear 81 drives the second rotating shaft 29 to rotate, the second rotating shaft 29 drives the second bevel gear 50 to rotate, the second bevel gear 50 drives the first bevel gear 49 to rotate, the first bevel gear 49 drives the fourth rotating shaft 48 to rotate, the fourth rotating shaft 48 drives the pulley 51 to rotate, the pulley 51 drives the pulley 2 52 to rotate through the belt, the pulley 2 52 drives the pressure roller 5 to rotate, and through the friction force, The topmost carton is transported to the lower bottom plate 10, and then moves forward under the action of the conveyor belt until it hits the baffle 54 and stops. When the carton blocks the photoelectric switch 14, the controller controls the drive motor 2 67 to stop rotating, controls the lifting mechanism 2 to descend, so that the conveyor belt is lower than the top of the slot 12, controls the lifting mechanism 19 to descend, so that the upper pressing plate 11 flattens the carton. When the distance measuring instrument 21 detects that the distance between the upper pressing plate 11 and the lower bottom plate 10 reaches a preset value, controls the lifting mechanism 19 to stop moving, controls the drive rod 1 37 to reset, and the sliding gear 1 81 is out of contact with the gear 3 32. The controller controls The driving rod 2 46 moves, so that the connecting hook 2 43 on the sliding gear 2 82 is connected with the groove 2 44 on the gear 4 41, so that the gear 4 41 drives the sliding gear 2 82 to rotate, and the sliding gear 2 82 drives the third rotating shaft 38 to rotate, and the third rotating shaft 38 drives the screw 18 to rotate, and drives the lower bottom plate 10 to move forward. When the contact switch 3 60 at the front end of the plate 59 contacts the baffle 54, the lifting mechanism 19 is lifted. When the plate 59 opens the baffle 54, the contact switch 2 56 is loosened, and the controller receives the electrical signal, controls the driving rod 2 46 to reset, and controls the driving motor 2 67 to start, so as to send the carton out. When the photoelectric switch 14 detects that the carton has detached, the drive motor 2 67 is controlled to stop, the drive motor 1 26 is controlled to reverse, and the drive rod 2 46 is controlled to move, so that the connecting hook 2 43 on the sliding gear 2 82 is connected with the groove 2 44 on the gear 4 41, so that the gear 4 41 drives the sliding gear 2 82 to rotate, the sliding gear 2 82 drives the third rotating shaft 38 to rotate, and the third rotating shaft 38 drives the screw 18 to rotate, driving the lower bottom plate 10 to move backward and reset. After the contact switch 1 57 contacts the storage box 3, the controller receives the signal and restores the entire equipment to the working state of the second step mentioned above, and performs the operation reciprocatingly.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] In the present invention, after the carton is output from the storage box 3 and before it reaches the printing mechanism 1, the lower pressing plate always exerts pressure on it, and the upper pressing plate 11 is in direct hard contact with the lower bottom plate 10, which can withstand greater pressure, thereby ensuring the flattening quality. Embodiment 2

[0058] like Fig.10 As shown, in this embodiment, a pressure roller 2 69 is rotatably arranged at the lower outer side of the discharge port 4 through a bracket 3 68, a pulley 3 70 is arranged at one end of the pressure roller 2 69, a pulley 4 71 is coaxially arranged on the fourth rotating shaft 48, and the pulley 3 70 and the pulley 4 71 are connected by belt transmission.

[0059] Bracket three 68 includes a symmetrically arranged support arm 68-1, and the support arm 68-1 includes a rotating shaft seat 68-11 and a base 68-12. Slide sleeves 68-13 are vertically arranged on both sides of the rotating shaft seat 68-11, and a screw rod 68-14 is arranged in the slide sleeve 68-13. The bottom end of the screw rod 68-14 is connected to the base 68-12, and a limiting nut 68-15 is arranged on the screw rod 68-14.

[0060] The working principle and beneficial effects of the above technical solution are:

[0061] First, the height of the pressure roller 2 69 is controlled by adjusting the position of the limit nut 68-15, so that the pressure roller 2 69 is lower than the pressure roller 1 5. When in use, when the cartons are output under the action of the pressure roller 1 5, the excess cartons brought out will move back under the action of the pressure roller 2 69, thereby avoiding the situation of bringing out multiple cartons. Embodiment 3

[0062] like Fig.11 As shown, in the present embodiment, a flap 72 is rotatably provided below one side of the notch 12, and an arc-shaped connecting arm 73 is provided at one end of the flap 72, and one end of the connecting arm is rotatably connected to the bottom of the lower base plate 10, and the area of ​​the flap 72 is adapted to the area of ​​the notch 12, and an air cylinder 74 is provided at the bottom of the lower base plate 10, and a piston 75 is provided in the air cylinder 74, and a push rod 76 is connected to the outward end of the piston 75, and the push rod 76 is rotatably connected to the connecting rod 77, and the other end of the connecting rod 77 is rotatably connected to the bottom of the flap 72, and an air cylinder 78 is vertically provided below the base 61, and a piston 79 is provided in the air cylinder 78, and a push rod 80 is provided on the upper end of the piston 79, and the upper end of the push rod 80 is connected to the base 61, and the bottom of the air cylinder 78 is connected through an air pipe to the end of the air cylinder 74 away from the push rod 76.

[0063] The working principle and beneficial effects of the above technical solution are:

[0064] During use, when the lifting mechanism 2 rises, the piston 2 79 rises, causing the air pressure in the air cylinder 2 78 to decrease, thereby causing the piston 1 75 to contract, causing the flap 72 to open, facilitating the movement of the conveyor belt; when the lifting mechanism 2 descends, the piston 2 79 descends, causing the air pressure in the air cylinder 2 78 to increase, causing the piston 1 75 to push out, causing the flap 72 to close, closing the notch 12 on the lower base plate 10, and making the upper surface of the lower base plate 10 smooth, thereby achieving a better flattening effect and preventing the carton from being partially stressed.

[0065] The above are only preferred specific implementations of the present invention; however, 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 solutions and improved concepts 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. A packaging carton printing machine, characterized in that: include, The feeding mechanism comprises a bracket (2), a material storage box (3) is arranged on the top of the bracket (2), a material discharge port (4) is arranged on one side of the top of the material storage box (3), a pressure roller (5) is rotatably arranged on the top of the material storage box (3), and an elastic support device is arranged at the bottom of the material storage box (3); The flattening mechanism is arranged on one side of the discharge port (4), comprising a second bracket (8), a fixed frame (9) is movably arranged on the top of the second bracket (8), a lower bottom plate (10) is horizontally arranged inside the fixed frame (9), an upper pressing plate (11) is lifted and lowered on the upper part of the lower bottom plate (10), a limiting mechanism is arranged on the side of the lower bottom plate (10) away from the feeding mechanism, the limiting mechanism comprises a fourth bracket (53), a baffle (54) is rotatably arranged on the upper end of the fourth bracket (53), a limiting block (55) is arranged on the inner side of the fourth bracket (53) and on the right side of the baffle (54), a contact switch (56) is arranged on the side of the limiting block (55) facing the baffle (54), and a printing A bracket five (58) is arranged on the side of the brush mechanism (1) facing the baffle (54), a support plate (59) is arranged horizontally on the top of the bracket five (58), the support plate (59) points to the lower side of the rotation position of the baffle (54), a contact switch three (60) connected by an elastic telescopic rod is arranged at the front end of the support plate (59), a plurality of parallel slots (12) are arranged in the middle of the lower base plate (10), a conveying mechanism is arranged in the slots (12), a mounting hole one (13) is arranged on the inner side of the limit mechanism on the lower base plate (10), a photoelectric switch (14) is arranged in the mounting hole one (13), and a contact switch one (57) is arranged on the left side of the lower base plate (10); The printing mechanism (1) is arranged on the other side of the flattening mechanism and is used for printing on the carton. A plurality of slide rails (15) are arranged in parallel on the second bracket (8), a roller (16) is arranged at the bottom of the fixed frame (9) corresponding to the slide rails (15), a threaded hole (17) is arranged horizontally at the bottom of the fixed frame (9), a screw rod (18) is arranged in the threaded hole (17), one end of the screw rod (18) is connected to the output end of the driving motor (26) on the second bracket (8), a plurality of lifting mechanisms (19) are arranged vertically and evenly at the edge of the lower bottom plate (10), and the other end of the lifting mechanism (19) is connected to the upper pressing plate (11), A second mounting hole (20) is also provided at one end of the lower base plate (10) close to the feeding mechanism, and a distance measuring instrument (21) is provided in the second mounting hole (20).

2. A packaging carton printing machine according to claim 1, characterized in that: The bracket 2 (8) is also provided with a transmission box, the transmission box comprising a box body (22), a first wall body (23) and a second wall body (24) being arranged vertically and spaced apart in the box body (22), a first rotating shaft (25) being arranged horizontally on the upper part of the box body (22), one end of the first rotating shaft (25) being connected to the output end of a driving motor 1 (26), a gear 1 (27) being arranged on the first rotating shaft (25) between the left box body (22) and the first wall body (23), a gear 2 (28) being arranged on the first rotating shaft (25) between the right box body (22) and the second wall body (24), a second rotating shaft (29) being arranged below the first rotating shaft (25) and between the left box body (22) and the first wall body (23), the second rotating shaft (29) being arranged at a position between the second rotating shaft (29) and the first wall body (23). A needle bearing (30) is arranged on the first rotating shaft (29), a spline sleeve (31) is arranged on the outer side of the needle bearing (30), a gear (32) is arranged on the outer side of the spline sleeve (31), the gear (32) is meshed with the gear (27), a spline (33) is also arranged on the second rotating shaft (29), a sliding gear (81) is slidably arranged on the spline (33), a connecting hook (34) is arranged on the side of the sliding gear (81) facing the gear (32), a groove (35) is arranged on the gear (32) corresponding to the connecting hook (34), a shift fork (36) is arranged on the sliding gear (81), the other end of the shift fork (36) is connected to a driving rod (37) arranged on the outer side of the housing (22), A third rotating shaft (38) is provided below the first rotating shaft (25) and between the right box body (22) and the second wall body (24). A second needle bearing (39) is provided on the third rotating shaft (38). A second spline sleeve (40) is provided outside the second needle bearing (39). A fourth gear (41) is provided on the outer sleeve of the second spline sleeve (40). The fourth gear (41) meshes with the second gear (28). A second spline (42) is also provided on the second rotating shaft (29). A second sliding gear (82) is slidably provided on the second spline (42). A second connecting hook (43) is provided on the side of the second sliding gear (82) facing the fourth gear (41). A second groove (44) is provided on the fourth gear (41) corresponding to the second connecting hook (43). A second shift fork (45) is provided on the second sliding gear (82). The other end of the second shift fork (45) is connected to a second driving rod (46) provided outside the box body (22). The second rotating shaft extends from the left side of the box body (22) and is connected to the transmission assembly, the transmission assembly is drivingly connected to the pressure roller one (5), and the second rotating shaft extends from the right side of the box body (22) and is connected to the screw rod one (18).

3. A packaging carton printing machine according to claim 2, characterized in that: The transmission assembly comprises a rotating shaft support (47), a fourth rotating shaft (48) is horizontally arranged on the rotating shaft support (47), a first bevel gear (49) is arranged at one end of the fourth rotating shaft (48), a second bevel gear (50) is arranged at the left end of the second rotating shaft, the first bevel gear (49) and the second bevel gear (50) are meshed, a pulley 1 (51) is arranged at the other end of the fourth rotating shaft (48), a pulley 2 (52) is arranged at one end of the pressure roller 1 (5), and the pulley 1 (51) and the pulley 2 (52) are connected by a belt transmission.

4. A packaging carton printing machine according to claim 3, characterized in that: A pressure roller 2 (69) is rotatably arranged at the lower outer side of the discharge port (4) through a bracket 3 (68), a pulley 3 (70) is arranged at one end of the pressure roller 2 (69), a pulley 4 (71) is coaxially arranged on the fourth rotating shaft (48), the pulley 3 (70) and the pulley 4 (71) are connected through a belt transmission, the bracket 3 (68) comprises a symmetrically arranged support arm (68-1), the support arm (68-1) comprises a rotating shaft seat 1 (68-11) and a base 1 (68-12), sliding sleeves (68-13) are vertically arranged on both sides of the rotating shaft seat 1 (68-11), a screw rod 2 (68-14) is arranged in the sliding sleeve (68-13), the bottom end of the screw rod 2 (68-14) is connected to the base 1 (68-12), and a limiting nut (68-15) is arranged on the screw rod 2 (68-14).

5. A packaging carton printing machine according to claim 1, characterized in that: The conveying mechanism comprises a base 2 (61), two ends of the base 2 (61) corresponding to the notch (12) are provided with a rotating shaft seat 2 (62), the top of the rotating shaft seat 2 (62) is rotatably provided with a pulley 5 (63), the base 2 (61) is arranged on the bracket 2 (8) through the lifting mechanism 2, the pulley 5 (63) comprises two symmetrically arranged wheel bodies (63-1), a connecting shaft (63-2) is arranged between the two wheel bodies (63-1), and a sprocket 1 (63-2) is arranged on the connecting shaft (63-2). 3-3), a rotating shaft seat three (64) is arranged below the same side of the plurality of notches (12), a rotating shaft five (65) is arranged in the plurality of rotating shaft seats three (64), a sprocket two (66) is arranged on the rotating shaft five (65) at a position corresponding to the sprocket one (63-3), the sprocket one (63-3) and the sprocket two (66) are driven by a chain, one end of the rotating shaft five (65) is connected to the output end of the driving motor two (67), and the wheel bodies (63-1) on the same side of the two ends of the notch (12) are connected by a conveyor belt drive.

6. A packaging carton printing machine according to claim 5, characterized in that: A flap (72) is rotatably provided below one side of the notch (12), one end of the flap (72) is provided with an arc-shaped connecting arm (73), one end of the connecting arm is rotatably connected to the bottom of the lower base plate (10), the area of ​​the flap (72) is adapted to the area of ​​the notch (12), an air cylinder (74) is provided at the bottom of the lower base plate (10), a piston (75) is provided in the air cylinder (74), and a push rod (76) is connected to the outward end of the piston (75), and the push rod (76) The second end of the connecting rod (77) is rotatably connected to the bottom of the flap (72). A second gas cylinder (78) is vertically arranged below the second base (61). A second piston (79) is arranged in the second gas cylinder (78). A second push rod (80) is arranged at the upper end of the second piston (79). The upper end of the second push rod (80) is connected to the second base (61). The bottom of the second gas cylinder (78) is connected to the end of the first gas cylinder (74) away from the first push rod (76) through an air pipe.

7. A packaging carton printing machine according to claim 1, characterized in that: The elastic support device comprises a bearing plate (6), a plurality of springs (7) are arranged at the bottom of the bearing plate (6), and the other end of the spring (7) is connected to the bottom of the material storage box (3).

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