Low-temperature drying system for ink printing of packaging carton

Abstract

The invention discloses a packaging carton printing ink printing low-temperature drying system which comprises two belt conveyors, the opposite ends of the two belt conveyors are fixedly connected with the two ends of two supporting frames correspondingly, a conveying belt is arranged between the two supporting frames, and overturning assemblies are movably arranged on the two sides of the conveying belt correspondingly. The overturning assembly is movably arranged between the supporting frame and the conveying belt, and one end of the overturning assembly is fixedly connected with an output shaft of the servo motor. Drying boxes are fixedly mounted at the top ends of the two belt conveyors correspondingly, gear motors are fixedly mounted on one sides of the middles of the top ends of the drying boxes correspondingly, output shafts of the gear motors rotationally extend into the drying boxes correspondingly, then the ends of the output shafts are fixedly connected with reciprocating assemblies correspondingly, and mounting frames are fixedly connected to the two sides of the bottom ends of the reciprocating assemblies correspondingly; fans are fixedly mounted in the mounting frames, and electric heating nets are arranged at the bottoms of the fans. By means of the turnover assembly, turnover operation of the packaging carton is achieved, and by means of the reciprocating assembly, the drying uniformity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, in particular to a low-temperature drying system for printing ink on packaging cartons. Background Art

[0002] Ink drying refers to the process by which ink, after forming an imprint on a printed material, transforms from a liquid or paste into a solid film. This process is accomplished by the transformation of the binder in the ink from a liquid or paste into a solid. Because different inks use different binders and their formulation ratios, the drying process also varies. After the ink transfers from the printing plate to the printed surface, some of the binder penetrates, while the solvent in the binder evaporates. Some binders also undergo chemical or physical reactions, gradually increasing the viscosity and hardness of the ink layer on the substrate, ultimately forming a solid film.

[0003] After the ink printing is completed on the packaging carton, the ink needs to be dried. The existing drying system, such as the patent with publication number CN110525041B, discloses an ink drying device and method for packaging carton printing: the upper end of the support base is provided with a conveyor belt, the upper end of the conveyor belt is provided with a drying box, and the inner top of the drying box is provided with an array of protective sleeves, the interior of the protective sleeves is interspersed with inlet and outlet adjustment pipes, and low-temperature baking lamps are fixed between adjacent protective sleeves; the lower end of the drying box is provided with several side pressure plate rollers; wherein, the inlet and outlet adjustment pipes are composed of three groups of air inlet nozzles and three groups of air outlet nozzles; the air inlet nozzles and the air outlet nozzles form a cylindrical structure.

[0004] Although this device can achieve rapid drying of printing ink, it can only achieve single-sided drying during drying. After single-sided drying is completed, the packaging carton needs to be manually turned over, which consumes a lot of manpower. Therefore, we propose a low-temperature drying system for packaging carton ink printing to solve the above problem. Summary of the Invention

[0005] The object of the present invention is to provide a low-temperature drying system for printing ink on packaging cartons to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a low-temperature drying system for printing ink on packaging cartons, comprising two belt conveyors, wherein opposite ends of the two belt conveyors are respectively fixedly connected to the two ends of two support frames, a conveyor belt is provided between the two support frames, and a flip assembly is movably provided on both sides of the conveyor belt, the flip assembly is movably provided between the support frame and the conveyor belt, and one end of the flip assembly is fixedly connected to the output shaft of a servo motor, and the servo motor is fixedly mounted on one side outer wall of the support frame;

[0007] A drying box is fixedly installed on the top of each of the two belt conveyors, and a reduction motor is fixedly installed on one side of the middle part of the top of each of the drying boxes. After the output shafts of the reduction motors rotate and extend into the drying boxes, the ends of the output shafts are fixedly connected to reciprocating components. Both sides of the bottom ends of the reciprocating components are fixedly connected to mounting frames, and fans are fixedly installed in the mounting frames. The bottom of the fan is provided with an electric heating net fixedly connected to the bottom end of the mounting frame.

[0008] Preferably, the flip assembly includes a support seat, a transmission connecting rod, an articulated seat, a material receiving frame, a connecting seat, a rack, a gear, a rotating shaft, and a wire slide. The support seat is provided with two and the two support seats are respectively fixedly connected to the top ends of the two support frames, the two support seats are respectively hinged to one end of the transmission connecting rod, and the other end of the transmission connecting rod is respectively hinged to the articulated seat, and the articulated seat is respectively fixedly connected to the top middle part of the material receiving frame, and the material receiving frame is symmetrically arranged on both sides of the conveyor belt in parallel, and the end of the material receiving frame away from the support seat is respectively hinged to one side of the connecting seat, and the bottom of the connecting seat is respectively fixedly connected to the top of one end of the rack, and the bottom of the rack is respectively engaged with the gear.

[0009] Preferably, the opposite ends of the racks are fixedly connected to the sliding ends of the wire slide rails, the wire slide rails are fixedly installed on the opposite end faces of the support frames, the gears are fixedly sleeved on both sides of the rotating shaft, the rotating shaft is rotatably connected to the support frame and one end of the rotating shaft is fixedly connected to the output shaft of the servo motor.

[0010] Preferably, the reciprocating assembly includes an active connecting rod, a cylindrical pin, a sliding frame, an active rack, a driven rack, a transmission gear, a supporting sliding frame, a transmission shaft, and a mounting frame. The active connecting rod is rotatably arranged in the drying box, one end of the active connecting rod is fixedly connected to the output shaft of the reduction motor, the other end of the active connecting rod is rotatably sleeved on the upper end outer wall of the cylindrical pin, the bottom end outer wall of the cylindrical pin is slidably arranged in the sliding frame, the end of the sliding frame away from the active connecting rod is fixedly connected to the top of one end of the active rack, the active rack is meshed with the transmission gear, and the transmission gear is meshed with the driven rack.

[0011] Preferably, the sliding frame is a runway-type structure, the driven rack and the active rack are arranged in parallel and staggered, the transmission gear rotates and sleeves the outer wall of one end of the transmission shaft, the other end of the transmission shaft is fixedly connected to the middle of the mounting frame, and the two ends of the mounting frame are respectively fixedly connected to the inner walls of both sides of the drying box.

[0012] Preferably, the bottoms of the driven rack and the active rack are respectively slidably engaged with the support slide frame, the two ends of the support slide frame are respectively fixedly connected to the inner walls of the two sides of the drying box, the two ends of the bottoms of the driven rack and the active rack are respectively fixedly connected to the mounting frame through fixed columns, and the fixed columns respectively slide through the support slide frame.

[0013] Preferably, the two belt conveyors and the transmission surface of the conveyor belt are arranged flush with each other, and the width of the conveyor belt is smaller than the width of the two belt conveyors.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The servo motor cooperates with the flipping assembly to flip the packaging carton 180 degrees, thereby realizing the turning operation of the packaging carton, providing a basis for the double-sided printing ink drying work of the packaging carton.

[0016] 2. The packaging cartons are transported by a belt conveyor. During the transportation process, the fan in the drying box cooperates with the electric heating net to dry the printing ink on the packaging cartons. While drying, the reduction motor cooperates with the reciprocating component to drive multiple fans and electric heating nets to move back and forth in an interlaced manner, thereby changing the drying position multiple times to avoid a fixed drying position and improve the uniformity of drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the partial structure of the flip assembly in the present invention;

[0020] Figure 4 For the present invention Figure 2 Schematic diagram of the plane structure of the middle support frame position;

[0021] Figure 5 Schematic diagram of the internal structure of the drying box in the present invention Figure 1 ;

[0022] Figure 6 Schematic diagram of the internal structure of the drying box in the present invention Figure 2 ;

[0023] Figure 7 Schematic diagram of the internal structure of the drying box in the present invention Figure 3 ;

[0024] Figure 8 This is a schematic diagram of the cross-sectional structure of the drying oven of the present invention;

[0025] Figure 9 This is a structural diagram of the flip assembly of the present invention after flipping 180 degrees.

[0026] In the figure: belt conveyor 1, support frame 2, drying box 3, reduction motor 4, flip assembly 5, support base 51, transmission connecting rod 52, hinged base 53, material receiving frame 54, connecting base 55, rack 56, gear 57, rotating shaft 58, wire slide 59, conveyor belt 6, servo motor 7, reciprocating assembly 8, active connecting rod 81, cylindrical pin 82, slide frame 83, active rack 84, driven rack 85, transmission gear 86, support slide frame 87, transmission shaft 88, mounting frame 89, mounting frame 9, electric heating net 10, fan 11, and low baffle 12. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] Reference Figure 1-6 , which is the first embodiment of the present invention, provides a low-temperature drying system for printing ink on packaging cartons, comprising two belt conveyors 1, wherein opposite ends of the two belt conveyors 1 are fixedly connected to the two ends of two support frames 2, a conveyor belt 6 is provided between the two support frames 2, and a turnover assembly 5 is movably provided on both sides of the conveyor belt 6, the turnover assembly 5 is movably provided between the support frames 2 and the conveyor belt 6, and one end of the turnover assembly 5 is fixedly connected to the output shaft of a servo motor 7, and the servo motor 7 is fixedly mounted on one side outer wall of the support frame 2;

[0030] A drying box 3 is fixedly installed on the top of each of the two belt conveyors 1, and a reduction motor 4 is fixedly installed on one side of the middle part of the top of the drying box 3. After the output shaft of the reduction motor 4 rotates and extends into the drying box 3, the end of the output shaft is fixedly connected to a reciprocating assembly 8. The two sides of the bottom end of the reciprocating assembly 8 are fixedly connected to a mounting frame 9, and a fan 11 is fixedly installed in the mounting frame 9. The bottom of the fan 11 is provided with an electric heating net 10 fixedly connected to the bottom end of the mounting frame 9.

[0031] Example 2

[0032] Reference Figure 1-9 , which is the second embodiment of the present invention, is based on the previous embodiment. Specifically, the transmission surfaces of the two belt conveyors 1 and the conveyor belt 6 are arranged flush, and the width of the conveyor belt 6 is smaller than the width of the two belt conveyors 1. The narrower conveyor belt 6 allows a certain gap to exist between the two sides of the conveyor belt 6 and the side walls of the support frame 2, providing space for the movement of the flip assembly 5.

[0033] A temperature sensor is fixedly installed inside the drying box 3, and the temperature sensor signal is connected to the thermostat. The thermostat is fixedly installed outside the drying box 3 and is electrically connected to the electric heating network 10 and the fan 11. The temperature sensor cooperates with the thermostat to monitor and control the temperature inside the drying box 3.

[0034] Specifically, the reciprocating assembly 8 includes an active connecting rod 81, a cylindrical pin 82, a sliding frame 83, an active rack 84, a driven rack 85, a transmission gear 86, a supporting sliding frame 87, a transmission shaft 88, and a mounting frame 89. The active connecting rod 81 is rotatably arranged in the drying box 3, one end of the active connecting rod 81 is fixedly connected to the output shaft of the reduction motor 4, and the other end of the active connecting rod 81 is rotatably sleeved on the upper end outer wall of the cylindrical pin 82, and the bottom end outer wall of the cylindrical pin 82 is slidably arranged in the sliding frame 83. The end of the sliding frame 83 away from the active connecting rod 81 is fixedly connected to the top of one end of the active rack 84, the active rack 84 is meshed with the transmission gear 86, and the transmission gear 86 is meshed with the driven rack 85.

[0035] Furthermore, the sliding frame 83 is a runway-type structure, the driven rack 85 and the active rack 84 are arranged in parallel and staggered, the transmission gear 86 rotates and sleeves the outer wall of one end of the transmission shaft 88, and the other end of the transmission shaft 88 is fixedly connected to the middle of the mounting bracket 89, and the two ends of the mounting bracket 89 are respectively fixedly connected to the inner walls on both sides of the drying box 3.

[0036] Furthermore, the bottoms of the driven rack 85 and the active rack 84 are respectively slidably engaged with the support slide frame 87, and the two ends of the support slide frame 87 are respectively fixedly connected to the inner walls of the two sides of the drying box 3, and the two ends of the bottoms of the driven rack 85 and the active rack 84 are respectively fixedly connected to the mounting frame 9 through fixed columns, and the fixed columns slide through the support slide frame 87 respectively.

[0037] Specifically, the flip assembly 5 includes a support seat 51, a transmission connecting rod 52, a hinge seat 53, a material receiving frame 54, a connecting seat 55, a rack 56, a gear 57, a rotating shaft 58, and a wire slide rail 59. The support seat 51 is provided with two and the two support seats 51 are respectively fixedly connected to the top ends of the two support frames 2. The two support seats 51 are respectively hinged to one end of the transmission connecting rod 52, and the other end of the transmission connecting rod 52 is respectively hinged to the hinge seat 53. The hinge seat 53 is respectively fixedly connected to the middle part of the top end of the material receiving frame 54. The material receiving frame 54 is symmetrically arranged on both sides of the conveyor belt 6 in parallel. The end of the material receiving frame 54 away from the support seat 51 is respectively hinged to one side of the connecting seat 55. The bottom of the connecting seat 55 is respectively fixedly connected to the top of one end of the rack 56, and the bottom of the rack 56 is respectively engaged with the gear 57. The material receiving frame 54 is a U-shaped structure.

[0038] Furthermore, the opposite ends of the rack 56 are fixedly connected to the sliding ends of the wire slide rail 59, and the wire slide rail 59 is fixedly installed on the opposite end surface of the support frame 2. The gear 57 is fixedly sleeved on both sides of the rotating shaft 58, and the rotating shaft 58 is rotatably connected to the support frame 2 and one end of the rotating shaft 58 is fixedly connected to the output shaft of the servo motor 7.

[0039] Example 3

[0040] Reference Figure 1-9 , which is the third embodiment of the present invention. This embodiment is based on the above two embodiments. After the ink printing is completed, the packaging carton is still in a semi-finished state, that is, it is still a corrugated cardboard. The corrugated cardboard is placed flat on the Figure 1 On the belt conveyor 1 on the right, the opening of the receiving frame 54 of the flip assembly 5 is facing the corrugated cardboard, and the belt conveyor 1 transports the corrugated cardboard, and the corrugated cardboard enters the drying box 3. The reduction motor 4 is energized to work, and the reduction motor 4 drives the reciprocating assembly 8 to work, and the active connecting rod 81 of the reciprocating assembly 8 rotates circumferentially, and the active connecting rod 81 drives the cylindrical pin 82 to rotate circumferentially, and the cylindrical pin 82 drives the slide frame 83 to make reciprocating linear movements along the length direction of the rack, and the slide frame 83 drives the fixed active rack 84 to make reciprocating linear movements along the length direction of the support slide frame 87, and the active rack 84 then drives the meshing transmission gear 86 to rotate back and forth clockwise / counterclockwise, and the transmission gear 86 then drives the driven rack 85 to make reciprocating linear movements along the length direction of the support slide frame 87. Since the active rack 84 and the driven rack 85 are parallel and staggered, the two respectively drive the fixed mounting frame 9 to make staggered reciprocating linear movements, that is, Figure 8 As shown, when the left mounting frame 9 moves linearly downward, the right mounting frame 9 moves linearly upward. When the left mounting frame 9 moves linearly upward, the right mounting frame 9 moves linearly downward. In this reciprocating linear movement, the mounting frame 9 drives the fan 11 and the electric heating network 10 to move synchronously. The electric heating network 10 is energized to generate heat. The fan 11 blows air toward the corrugated cardboard, and the heat generated by the electric heating network 10 is used to dry the printing ink on the corrugated cardboard. A temperature sensor is fixedly installed inside the drying box 3, and the temperature sensor signal is connected to the thermostat. The thermostat is fixedly installed outside the drying box 3 and is electrically connected to the electric heating network 10 and the fan 11. The temperature sensor cooperates with the thermostat to monitor and control the temperature inside the drying box 3. The fans 11 and the electric heating network 10 on both sides of the middle of the drying box 3 move back and forth in an staggered manner, thereby changing the drying position multiple times to avoid a fixed drying position and improve the uniformity of drying. When one side of the corrugated cardboard is dried, it is transferred to the conveyor belt 6 via the belt conveyor 1.

[0041] The two sides of the corrugated cardboard transmitted by the conveyor belt 6 are respectively inserted into the material receiving frame 54 of the flipping assembly 5, and the servo motor 7 is powered on to work, and the servo motor 7 drives the rotating shaft 58 to rotate, and the rotating shaft 58 drives the fixed gear 57 to rotate, and the gear 57 drives the meshing rack 56 to move along the length direction of the wire slide 59. The wire slide 59 is fixedly installed on the opposite end face of the support frame 2 and the frame of a belt conveyor 1. The rack 56 then drives the fixed connecting seat 55 to move, and the connecting seat 55 drives the hinged material receiving frame 54 to flip with the hinge of the connecting seat 55 as the center of the circle. At the same time, the transmission connecting rod 52 cooperates with the hinge seat 53 and the support seat 51 to support the flipping of the material receiving frame 54. The material receiving frame 54 is finally flipped 180 degrees to form Figure 9 As shown in the structure, the corrugated cardboard is placed flat on the conveyor belt 6 again, and the two ends of the corrugated cardboard are still limited by the material receiving frame 54 to prevent it from falling. After being transmitted by the conveyor belt 6, the corrugated cardboard slowly separates from the material receiving frame 54 and is finally transmitted to Figure 1 On the left side of the belt conveyor 1, a short baffle 12 can be fixed on the outer surface of the conveyor belt 6 to push the transmission of the corrugated cardboard. The corrugated cardboard is transported to the drying box 3 through the belt conveyor 1 to dry the other side. Figure 1 After the belt conveyor 1 on the left is on, the servo motor 7 works in the reverse direction, and then the components of the turning assembly 5 cooperate to drive the receiving frame 54 to turn 180 degrees in the reverse direction and then return to the original position. Figure 1 Status shown.

[0042] It should be noted that the specific models and specifications of the belt conveyor, reduction motor, conveyor belt, servo motor, electric heating network, and fan need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature drying system for printing ink on packaging cartons, comprising two belt conveyors (1), characterized in that: The opposite ends of the two belt conveyors (1) are respectively fixedly connected to the two ends of the two support frames (2); a conveyor belt (6) is provided between the two support frames (2); and a flip assembly (5) is movably provided on both sides of the conveyor belt (6); the flip assembly (5) is movably provided between the support frame (2) and the conveyor belt (6); and one end of the flip assembly (5) is fixedly connected to the output shaft of a servo motor (7); and the servo motor (7) is fixedly mounted on one side outer wall of the support frame (2); A drying box (3) is fixedly installed on the top of each of the two belt conveyors (1), and a reduction motor (4) is fixedly installed on one side of the middle of the top of each of the drying boxes (3). After the output shafts of the reduction motors (4) rotate and extend into the drying boxes (3), the ends of the output shafts are fixedly connected to reciprocating components (8). Both sides of the bottom of the reciprocating components (8) are fixedly connected to mounting frames (9). A fan (11) is fixedly installed in each of the mounting frames (9), and an electric heating net (10) fixedly connected to the bottom of the mounting frame (9) is provided at the bottom of the fan (11).

2. A low-temperature drying system for printing ink on packaging cartons according to claim 1, characterized in that: The flip assembly (5) comprises a support seat (51), a transmission connecting rod (52), a hinge seat (53), a material receiving frame (54), a connecting seat (55), a rack (56), a gear (57), a rotating shaft (58), and a guide rail (59). The support seat (51) is provided with two, and the two support seats (51) are respectively fixedly connected to the top ends of the two support frames (2). The two support seats (51) are respectively hinged to one end of the transmission connecting rod (52). The transmission connecting rod (52) ) are respectively hinged to the hinge seat (53), and the hinge seat (53) is respectively fixedly connected to the middle of the top of the material receiving frame (54). The material receiving frame (54) is symmetrically arranged on both sides of the conveyor belt (6) in parallel. The end of the material receiving frame (54) away from the support seat (51) is respectively hinged to one side of the connecting seat (55), and the bottom of the connecting seat (55) is respectively fixedly connected to the top of one end of the rack (56), and the bottom of the rack (56) is respectively engaged with the gear (57).

3. The low-temperature drying system for ink printing on packaging cartons according to claim 2, characterized in that: The opposite ends of the rack (56) are fixedly connected to the sliding ends of the wire slide rail (59), and the wire slide rail (59) is fixedly installed on the opposite end surface of the support frame (2). The gear (57) is fixedly sleeved on both sides of the rotating shaft (58), and the rotating shaft (58) is rotatably connected to the support frame (2) and one end of the rotating shaft (58) is fixedly connected to the output shaft of the servo motor (7).

4. The low-temperature drying system for ink printing on packaging cartons according to claim 1, characterized in that: The reciprocating assembly (8) comprises an active connecting rod (81), a cylindrical pin (82), a sliding frame (83), an active rack (84), a driven rack (85), a transmission gear (86), a supporting sliding frame (87), a transmission shaft (88), and a mounting frame (89). The active connecting rod (81) is rotatably arranged in the drying box (3). One end of the active connecting rod (81) is fixedly connected to the output shaft of the reduction motor (4). The other end of the active connecting rod (81) is rotatably sleeved on the upper end outer wall of the cylindrical pin (82). The lower end outer wall of the cylindrical pin (82) is slidably arranged in the sliding frame (83). One end of the sliding frame (83) away from the active connecting rod (81) is fixedly connected to the top of one end of the active rack (84). The active rack (84) is meshed with the transmission gear (86), and the transmission gear (86) is meshed with the driven rack (85).

5. The low-temperature drying system for printing ink on packaging cartons according to claim 4, characterized in that: The sliding frame (83) is a runway-type structure. The driven rack (85) and the active rack (84) are arranged in parallel and staggered. The transmission gear (86) is rotatably connected to the outer wall of one end of the transmission shaft (88). The other end of the transmission shaft (88) is fixedly connected to the middle of the mounting frame (89). The two ends of the mounting frame (89) are respectively fixedly connected to the inner walls of the two sides of the drying box (3).

6. A low-temperature drying system for printing ink on packaging cartons according to claim 5, characterized in that: The bottoms of the driven rack (85) and the active rack (84) are respectively slidably engaged with the support slide frame (87), and the two ends of the support slide frame (87) are respectively fixedly connected to the inner walls of the drying box (3). The two ends of the bottoms of the driven rack (85) and the active rack (84) are respectively fixedly connected to the mounting frame (9) through fixed columns, and the fixed columns respectively slide through the support slide frame (87).

7. The low-temperature drying system for printing ink on packaging cartons according to claim 1, characterized in that: The transmission surfaces of the two belt conveyors (1) and the conveyor belt (6) are arranged flush with each other, and the width of the conveyor belt (6) is smaller than the width of the two belt conveyors (1).

Images