A flexographic printing press with easy changeover

Abstract

A kind of flexible printing press of convenient switching, the present application relates to flexible printing press technical field, upper end between front and rear two racks is equipped with a conveyor, the conveyor is connected with external power supply;The right upper end of the conveyor is equipped with inkjet cartridge;Transmission mechanism is arranged in the left side of rack;Tensioning mechanism is respectively arranged below and left of inkjet cartridge;Drying mechanism is arranged in the right side of conveyor;Switching mechanism is arranged in the right end of rack;It is convenient to turn over after printing flexible material, need not manual turn over alignment, can directly turn over printing, improve the efficiency of printing;It is convenient to dry ink in time, avoid pollution when switching, and avoid peculiar smell.

Description

Technical Field

[0001] This invention relates to the field of flexographic printing press technology, and more specifically to a flexographic printing press that is easy to switch between. Background Technology

[0002] When flexographic printing presses perform double-sided printing on flexible materials, the materials need to be switched and flipped first. Currently, when switching and flipping, manual flipping and alignment are required, which is time-consuming and labor-intensive. In addition, after printing, the ink needs to be dried before flipping, otherwise it will cause pollution. Therefore, a flexographic printing press that is easy to switch is proposed. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by proposing a flexographic printing machine that is easy to switch between, allowing for the flipping of printed flexible materials without the need for manual flipping and alignment, enabling direct printing on the flipped side and improving printing efficiency; it also facilitates timely drying of ink, avoiding contamination during switching and preventing odors.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: it includes a rack, a first transmission unit, and an inkjet cartridge; a first transmission unit is provided at the upper end between the front and rear racks, and the first transmission unit is connected to an external power supply; an inkjet cartridge is provided at the upper right end of the first transmission unit.

[0005] It also includes:

[0006] A transmission mechanism, wherein the transmission mechanism is located on the left side of the frame;

[0007] The tensioning mechanism consists of two parts, which are respectively located on the left and right sides below the inkjet cartridge.

[0008] The drying mechanism is located on the right side of the No. 1 conveyor.

[0009] A switching mechanism is located at the right end of the frame;

[0010] The above technical solution involves transporting the flexible material to be printed via a transmission mechanism, starting the first transmission machine, and using an inkjet cartridge to print ink on the flexible material. After printing on one side, when the flexible material moves to the switching mechanism, the switching mechanism flips the printed flexible material, and the transmission mechanism transfers the flipped flexible material upwards for printing again.

[0011] Preferably, the transmission mechanism comprises:

[0012] Mounting plates, there are two mounting plates, and they are respectively fixed to the bottom left side of the front and rear frames;

[0013] The first electric telescopic pole consists of several units, each fixed to a mounting plate, and is connected to an external power source.

[0014] The second transmission machine has its outer shell bottom connected to the movable end of the first electric telescopic rod, and the second transmission machine is connected to an external power source.

[0015] The third transmission unit is connected to the front and rear racks and to an external power supply; the third transmission unit is located below the first transmission unit; the switching mechanism is located on the upper right of the third transmission unit.

[0016] The above technical solution involves activating conveyor belts 1 and 2 to move the flexible material to the bottom of the inkjet cartridge for printing. A tensioning mechanism tightens the flexible material at the printing location. After printing on one side, a switching mechanism flips the material over. Conveyor belt 3 is then activated, and the flipped flexible material is moved to the left. When the flexible material is short, the electric telescopic rod 1 is activated, causing conveyor belt 2 to descend to be level with conveyor belt 3. Conveyor belt 2 is then activated, moving the flexible material onto it. Activating the electric telescopic rod 1 raises conveyor belt 2, lifting the flexible material. Conveyor belt 1 is then activated to flip the flexible material for printing. After printing, the material is removed using conveyor belts 3 and 2.

[0017] Preferably, the fourth transmission unit is located below the second transmission unit and is connected to an external power source; the bottom of the outer casing of the fourth transmission unit is connected to the movable ends of several second electric telescopic rods, and the second transmission unit is connected to an external power source; the bottom of the second electric telescopic rod is fixed to the mounting plate.

[0018] With the above technical solution design, when the flexible material is long, the No. 2 electric telescopic rod is activated so that the No. 4 conveyor is set up at the same level as the No. 3 conveyor. The No. 4 conveyor is then activated to move the flexible material out through the No. 4 conveyor and rewind it before reprinting.

[0019] Preferably, the tensioning mechanism comprises:

[0020] A fixed roller is provided between the front and rear frames, and the rear end of the fixed roller is screwed to the rear frame via a bearing.

[0021] The No. 1 motor is fixed to the front side of the front frame and is connected to an external power source. The front end of the fixed roller passes through the front frame via a shaft and bearing and is connected to the output shaft of the No. 1 motor.

[0022] The third type of electric telescopic rod consists of two rods, with sliding grooves on the front and rear frames respectively. The third type of electric telescopic rod is fixed to the inner top plate of the sliding groove and is connected to an external power source. The movable end of the third type of electric telescopic rod is connected to a slider.

[0023] A tension roller is positioned above a fixed roller, and its front and rear ends are connected to a slider via shafts and bearings, respectively.

[0024] A pad is fixed between the front and rear frames, with the upper end of the pad flush with the upper end of the fixed roller.

[0025] With the above technical solution, when the flexible material moves onto the fixed roller on the right, the third electric push rod on the right is activated, causing the tension roller on the right to press slightly onto the flexible material. The third electric telescopic rod on the left is activated, causing the tension roller on the left to press slightly onto the flexible material. First, the first motor on the right is activated, causing the fixed roller on the right to rotate clockwise, which tightens the flexible material below the inkjet cartridge. Then, the first motor on the left is activated, causing both fixed rollers to rotate together, so that the flexible material moves to the right while printing.

[0026] Preferably, the drying mechanism comprises:

[0027] The bellows consists of two bellows, which are fixed between the front and rear racks respectively. The bellows are located on the right side of the inkjet cartridge. Several fans are located at the bottom of the bellows. The fans are connected to an external power supply. The left fan exhausts air downwards, and the right fan exhausts air upwards.

[0028] The heating rods are numerous and are each located inside the air box on the left side; the heating rods are connected to an external power source.

[0029] An air outlet duct, which is fixed to the bellows on the right side;

[0030] A threaded tube is fitted onto the outlet of the air duct via a threaded connection; a filter cloth is provided on the right side of the threaded tube.

[0031] The air outlet pipe is screwed onto the threaded pipe, and several air outlet holes are provided on the right side wall of the air outlet pipe.

[0032] Through the above technical solution design, unscrew the threaded tube and the air outlet pipe, unscrew the air outlet pipe, add deodorizing agent particles, such as activated carbon, into the air outlet pipe, and screw the threaded tube and the air outlet pipe back; start the heating rod and the fan, the fan on the left blows hot air downwards to make the printed ink dry quickly, and the fan on the right carries away the ink smell and discharges it through the air outlet duct and the air outlet pipe. The deodorizing agent particles in the air outlet pipe absorb the odor.

[0033] Preferably, the switching mechanism comprises:

[0034] The fixing plates consist of two plates, which are respectively located on the outer side of the front and rear frames. The inner side of each fixing plate is fixed with a fixing ring, which is fixed to the frame. A second motor is fixed to the front side of the front fixing plate, and the second motor is connected to an external power source.

[0035] The switching roller is screwed between the front and rear fixed plates via a shaft and bearings. The front end of the switching roller passes through the front fixed plate via a shaft and bearings and is connected to the output shaft of motor No. 2. The pad on the right side rests against the switching roller.

[0036] Two bevel gear rings are screwed onto the inner wall of the fixed plate via bearings. A first bevel gear is engaged on the left side of the bevel gear ring. The left side of the first bevel gear is connected to the output shaft of the third motor. The third motor is connected to an external power source. The third motor is fixed to the fixed plate via a bracket.

[0037] The movable plate, which consists of several movable plates, is distributed with equal rounded corners and abuts against the inner right side of the fixed plate. A screw is inserted into the movable plate by a threaded connection. The outer end of the screw is screwed into the fixed ring by a bearing. A second bevel gear is fixed to the inner end of the screw. The second bevel gear meshes with the bevel gear ring.

[0038] The extrusion rollers are numerous and are respectively screwed onto the front and rear movable plates via shafts and bearings. A first gear is fixedly fitted at both ends of the extrusion rollers, and a second gear is meshed at the outer end of the first gear. A fourth motor is fixed on the movable plate and is connected to an external power source. The output shaft of the fourth motor is connected to the second gear.

[0039] Through the above technical solution design, starting motor No. 3 drives the first bevel gear to rotate, causing the bevel gear ring to rotate, which in turn drives several second bevel gears to rotate, causing the screw to rotate, which in turn drives the moving plate to move, causing the extrusion roller to move and extrude onto the flexible material. Starting motors No. 2 and No. 4 causes the switching roller and the extrusion roller to rotate together, driving the flexible material to move along the switching roller onto the No. 3 conveyor.

[0040] Preferably, the left and right sides of the pad on the left are respectively attached to the annular walls of the left and right fixed rollers, and the left and right sides of the pad on the right are respectively attached to the left fixed roller and the right switching roller.

[0041] With the above technical solution design, the pad is attached to the adjacent fixed roller or switching roller, which facilitates the transfer of flexible materials.

[0042] Compared with the prior art, the beneficial effects of the present invention are:

[0043] 1. Equipped with a transmission mechanism, a tensioning mechanism, and a switching mechanism, it facilitates the flipping of printed flexible materials without the need for manual flipping and alignment, enabling direct flipping and printing, thus improving printing efficiency.

[0044] 2. Equipped with a drying mechanism, it facilitates timely drying of ink, avoids contamination during switching, and prevents odors. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is the southwest isometric view of the present invention.

[0047] Figure 2 yes Figure 1 Enlarged view of part A in the image.

[0048] Figure 3 This is the southeast isometric view of the present invention.

[0049] Figure 4 This is a schematic diagram of the structure of the bellows, fan, air outlet, threaded pipe, filter cloth, and air outlet pipe in this invention.

[0050] Figure 5 yes Figure 4 Enlarged view of part B in the image.

[0051] Figure 6 This is a schematic diagram of the switching mechanism in this invention.

[0052] Figure 7 yes Figure 6 Enlarged view of section C in the image.

[0053] Figure 8 This is a schematic diagram of the structure of the pad in this invention.

[0054] Explanation of reference numerals in the attached figures:

[0055] Frame 1, Slide 1-1, Conveyor 1 2, Inkjet Cartridge 3, Transmission Mechanism 4, Mounting Plate 4-1, Electric Telescopic Rod 1 4-2, Conveyor 2 4-3, Conveyor 3 4-4, Conveyor 4-5, Electric Telescopic Rod 2 4-6, Tensioning Mechanism 5, Fixed Roller 5-1, Motor 1 5-2, Electric Telescopic Rod 3 5-3, Slider 5-4, Tensioning Roller 5-5, Pad Plate 5-6, Drying Mechanism 6, Air Box 6-1, Fan 6-2 6-3 Heating rod, 6-4 Air outlet duct, 6-5 Threaded tube, 6-6 Filter cloth, 6-7 Air outlet pipe, 7-8 Switching mechanism, 7-1 Fixed plate, 7-2 Fixed ring, 7-3 Motor No. 2, 7-4 Switching roller, 7-5 Bevel gear ring, 7-6 Bevel gear No. 1, 7-7 Motor No. 3, 7-8 Moving plate, 7-9 Screw, 7-10 Bevel gear No. 2, 7-11 Squeezing roller, 7-12 Gear No. 1, 7-13 Gear No. 2, 7-14 Motor No. 4. Detailed Implementation

[0056] The invention will now be further described with reference to the accompanying drawings.

[0057] Example 1:

[0058] Please see Figure 1 This embodiment 1 includes a rack 1, a first transmission unit 2, and an inkjet cartridge 3; the first transmission unit 2 is located at the upper end between the front and rear racks 1, and the first transmission unit 2 is connected to an external power supply. The specific model of the first transmission unit 2 is purchased, installed, and used directly from the market according to actual usage requirements; the inkjet cartridge 3 is located at the upper right end of the first transmission unit 2.

[0059] It also includes:

[0060] Transmission mechanism 4, which is located on the left side of frame 1;

[0061] There are two tensioning mechanisms 5, which are respectively located on the left and right sides below the inkjet cartridge 3.

[0062] Drying mechanism 6, which is located on the right side of conveyor 2;

[0063] The switching mechanism 7 is located at the right end of the frame 1;

[0064] In Example 1, the flexible material to be printed is transported by the transmission mechanism 4, the first conveyor 2 is started, and the inkjet cartridge 3 is used to print ink on the flexible material. After one side is printed, when the flexible material moves to the switching mechanism 7, the printing flexible material is switched and flipped by the switching mechanism 7, and the flipped flexible material is transported upward by the transmission mechanism for printing again.

[0065] Example 2:

[0066] Please see Figure 1 and Figure 3 Based on Embodiment 1, the transmission mechanism 4 includes:

[0067] Mounting plate 4-1, there are two mounting plates 4-1, and they are respectively fixed to the bottom left side of the front and rear frames 1;

[0068] The number of No. 1 electric telescopic rods 4-2 is several, and they are respectively fixed to the mounting plate 4-1 by bolts. The No. 1 electric telescopic rods 4-2 are connected to an external power source. The specific model of the No. 1 electric telescopic rods 4-2 is purchased directly from the market for installation and use according to actual usage requirements.

[0069] The bottom of the outer shell of the second transmission unit 4-3 is connected to the movable end of the first electric telescopic rod 4-2. The second transmission unit 4-3 is connected to an external power supply. The specific model of the second transmission unit 4-3 is purchased, installed and used directly from the market according to actual usage requirements.

[0070] Transmission Unit 4-4 is connected to the front and rear frames 1 and to an external power supply. The specific model of Transmission Unit 4-4 is purchased, installed, and used directly from the market according to actual usage requirements. Transmission Unit 4-4 is located below Transmission Unit 2. Switching mechanism 7 is located on the upper right of Transmission Unit 4-4.

[0071] Transmission Unit 4-5 is located below Transmission Unit 4-3 and is connected to an external power source. The specific model of Transmission Unit 4-5 is purchased and installed directly from the market according to actual usage requirements. The bottom of the outer shell of Transmission Unit 4-5 is connected to the movable ends of several Electric Telescopic Rods 4-6. Transmission Unit 4-3 is connected to an external power source, and the specific model of Transmission Unit 4-3 is purchased and installed directly from the market according to actual usage requirements. The bottom of Electric Telescopic Rods 4-6 is fixed to Mounting Plate 4-1.

[0072] In this embodiment, the first conveyor 2 and the second conveyor 4-3 are activated. The flexible material is moved by the second conveyor 4-3 and the first conveyor 2 to the area below the inkjet cartridge 3 for printing. The tensioning mechanism 5 tightens the flexible material at the printing location. After printing on one side, the switching mechanism 7 flips the material over. The third conveyor 4-4 is activated, and the flipped flexible material is moved to the left via the third conveyor 4-4. When the flexible material is short, the first electric telescopic rod 4-2 is activated, causing the second conveyor 4-3 to descend to be flush with the third conveyor 4-4. The second conveyor 4-3 is then activated... 3. Move the flexible material onto conveyor 4-3 (number 2). Activate electric telescopic rod 4-2 (number 1), which will raise conveyor 4-3 and lift the flexible material. Activate conveyor 2 (number 1) to flip the flexible material for printing. After printing, remove the material using conveyor 4-4 (number 3) and conveyor 4-3 (number 2). When the flexible material is long, activate electric telescopic rod 4-6 (number 2) to align conveyor 4-5 (number 4) with conveyor 4-4 (number 3). Activate conveyor 4-5 to remove the flexible material, rewind it, and then reprint.

[0073] Example 3:

[0074] Please see Figure 1-2 Based on Embodiment 1, the tensioning mechanism 5 includes:

[0075] Fixed roller 5-1 is located between the front and rear frames 1, and the rear end of the fixed roller 5-1 is screwed to the rear frame 1 via a bearing.

[0076] Motor 5-2 is fixed to the front side of the frame 1 by bolts. Motor 5-2 is connected to an external power supply. The specific model of motor 5-2 is purchased and installed directly from the market according to actual usage requirements. The front end of the fixed roller 5-1 passes through the front frame 1 through a shaft and bearing and is connected to the output shaft of motor 5-2.

[0077] The No. 3 electric telescopic rod 5-3 consists of two rods, with sliding grooves 1-1 respectively provided on the front and rear frames 1. The No. 3 electric telescopic rod 5-3 is fixed to the inner top plate of the sliding groove 1-1 by bolts. The No. 3 electric telescopic rod 5-3 is connected to an external power source. The specific model of the No. 3 electric telescopic rod 5-3 is purchased and installed directly from the market according to actual usage requirements. The movable end of the No. 3 electric telescopic rod 5-3 is connected to a slider 5-4.

[0078] The tension roller 5-5 is located above the fixed roller 5-1, and the front and rear ends of the tension roller 5-5 are connected to the slider 5-4 through shafts and bearings, respectively.

[0079] Pad 5-6, the pad 5-6 is fixed between the front and rear frames 1, and the upper end of the pad 5-6 is flush with the upper end of the fixed roller 5-1.

[0080] In this embodiment, when the flexible material moves onto the right-side fixed roller 5-1, the right-side electric push rod No. 3 is activated, causing the right-side tension roller 5-5 to press slightly onto the flexible material. The left-side electric telescopic rod No. 3 is activated, causing the left-side tension roller 5-5 to press slightly onto the flexible material. First, the right-side motor No. 1 5-2 is activated, causing the right-side fixed roller 5-1 to rotate clockwise, pulling the flexible material to a position below the inkjet cartridge 3 and then activating the left-side motor No. 1 5-2, causing both fixed rollers 5-1 to rotate together, so that the flexible material moves to the right while printing.

[0081] Example 4:

[0082] Please see Figure 1 , Figure 3 , Figure 4 and Figure 5 Based on Example 4, the drying mechanism 6 includes:

[0083] There are two air boxes 6-1, which are fixed between the front and rear frames 1 respectively. The air box 6-1 is located on the right side of the inkjet cartridge 3. Several fans 6-2 are provided at the bottom of the air box 6-1. The fans 6-2 are connected to an external power supply. The air outlet of the left fan 6-2 is set downward, and the air outlet of the right fan 6-2 is set upward.

[0084] Heating rod 6-3, there are several heating rods 6-3, and they are respectively installed in the air box 6-1 on the left side; the heating rod 6-3 is connected to an external power supply, and the specific model of the heating rod 6-3 is purchased directly from the market and installed and used according to the actual use requirements;

[0085] Air outlet 6-4, wherein the air outlet 6-4 is fixed on the bellows 6-1 on the right side;

[0086] Threaded tube 6-5, the threaded tube 6-5 is screwed onto the outlet of air duct 6-4; filter cloth 6-6 is provided on the right side of threaded tube 6-5;

[0087] Air outlet pipe 6-7 is threaded onto threaded pipe 6-5, and several air outlet holes are provided on the right side wall of air outlet pipe 6-7.

[0088] In this embodiment, unscrew the threaded tube 6-5 and the air outlet tube 6-7, add deodorizing agent particles such as activated carbon into the air outlet tube 6-7, and screw the threaded tube 6-5 and the air outlet tube 6-7 back on; start the heating rod 6-3 and the fan 6-2, the left fan 6-2 blows hot air downwards to make the printed ink dry quickly, and the right fan 6-2 carries away the ink smell and discharges it through the air outlet 6-4 and the air outlet tube 6-7. The deodorizing agent particles in the air outlet tube 6-7 adsorb the odor.

[0089] Example 5:

[0090] Please see Figure 1 , Figure 3 , Figure 6 and Figure 7 Based on embodiment 3, the switching mechanism 7 includes:

[0091] There are two fixing plates 7-1, one on the front and one on the back of the frame 1. The inner side of the fixing plate 7-1 is fixed with a fixing ring 7-2 by bolts. The fixing ring 7-2 is fixed to the frame 1 by bolts. The front side of the fixing plate 7-1 is fixed with a second motor 7-3 by bolts. The second motor 7-3 is connected to an external power supply. The specific model of the second motor 7-3 is purchased and installed directly from the market according to the actual use requirements.

[0092] The switching roller 7-4 is screwed between the front and rear fixed plates 7-1 via a shaft and bearings. The front end of the switching roller 7-4 passes through the front fixed plate 7-1 via a shaft and bearings and is connected to the output shaft of the second motor 7-3. The pad 5-6 on the right side abuts against the switching roller 7-4.

[0093] Two bevel gear rings 7-5 are screwed onto the inner wall of the fixing plate 7-1 via bearings. A first bevel gear 7-6 is meshed on the left side of the bevel gear ring 7-5. The left side of the first bevel gear 7-6 is connected to the output shaft of the third motor 7-7. The third motor 7-7 is connected to an external power supply. The specific model of the third motor 7-7 is purchased and installed directly from the market according to actual usage requirements. The third motor 7-7 is fixed to the fixing plate 7-1 by a bracket.

[0094] The movable plates 7-8 are numerous and are distributed with equal rounded corners, abutting against the inner right side of the fixed plate 7-1. A screw 7-9 is screwed into the movable plate 7-8 by a threaded connection. The outer end of the screw 7-9 is screwed into the fixed ring 7-2 by a bearing. A second bevel gear 7-10 is fixed to the inner end of the screw 7-9. The second bevel gear 7-10 is meshed with the bevel gear ring 7-5.

[0095] Several extrusion rollers 7-11 are screwed onto the front and rear movable plates 7-8 via shafts and bearings. A first gear 7-12 is fixedly fitted onto both ends of each extrusion roller 7-11. A second gear 7-13 meshes with the outer end of the first gear 7-12. A fourth motor 7-14 is bolted to the movable plate 7-8 and connected to an external power source. The specific model of the fourth motor 7-14 is purchased and installed directly from the market according to actual usage requirements. The output shaft of the fourth motor 7-14 is connected to the second gear 7-13.

[0096] In this embodiment, starting motor 7-7 drives bevel gear 7-6 to rotate, causing bevel ring 7-5 to rotate, which in turn drives several bevel gears 7-10 to rotate, causing screw 7-9 to rotate, which in turn moves moving plate 7-8, causing extrusion roller 7-11 to move and extrude onto flexible material. Starting motors 7-3 and 7-14 causes switching roller 7-4 and extrusion roller 7-11 to rotate together, moving flexible material along switching roller 7-4 onto conveyor 4-4.

[0097] Example 6:

[0098] Please see Figure 8 Based on embodiment 5, the left and right sides of the left pad 5-6 are respectively attached to the annular walls of the left and right fixed rollers 5-1, and the left and right sides of the right pad 5-6 are respectively attached to the left fixed roller 5-1 and the right switching roller 7-4.

[0099] In this embodiment, the pad 5-6 is attached to the adjacent fixed roller 5-1 or switching roller 7-4, which facilitates the transfer of flexible materials.

[0100] In use, the threaded tube 6-5 and the air outlet tube 6-7 are unscrewed. Odor-removing particles, such as activated carbon, are added to the air outlet tube 6-7. The threaded tube 6-5, air outlet tube 6-7, and air outlet tube 6-7 are then screwed back on. The first conveyor 2 and the second conveyor 4-3 are started. The flexible material is moved to below the inkjet cartridge 3 via the second conveyor 4-3 and the first conveyor 2 for printing. The heating rod 6-3 and the fan 6-2 are started. The left fan 6-2 blows hot air downwards, allowing the printed ink to dry quickly. The right fan 6-2 carries away the ink odor, which is then discharged through the air outlet 6-4 and the air outlet tube 6-7. The odor-removing particles in the air outlet tube 6-7 absorb the odor.

[0101] When the flexible material moves onto the right-side fixed roller 5-1, activate the right-side electric push rod #3, causing the right-side tension roller 5-5 to slightly press against the flexible material. Activate the left-side electric telescopic rod #3 5-3, causing the left-side tension roller 5-5 to slightly press against the flexible material. First, activate the right-side motor #1 5-2, causing the right-side fixed roller 5-1 to rotate clockwise, tightening the flexible material below the inkjet cartridge 3. Then, activate the left-side motor #1 5-2, causing both fixed rollers 5-1 to rotate together, allowing the flexible material to move to the right while printing. Once printing is complete on one side... Start motor 7-7, which drives bevel gear 7-6 to rotate, causing bevel ring 7-5 to rotate, which in turn drives several bevel gears 7-10 to rotate, causing screw 7-9 to rotate, which in turn moves moving plate 7-8, causing extrusion roller 7-11 to move and extrude onto the flexible material. Start motors 7-3 and 7-14, which cause switching roller 7-4 and extrusion roller 7-11 to rotate together, moving the flexible material along switching roller 7-4 onto conveyor 4-4. Start conveyor 4-4, and the flipped flexible material moves to the left via conveyor 4-4.

[0102] When the flexible material is short, activate the first electric telescopic rod 4-2 to lower the second conveyor 4-3 to be level with the third conveyor 4-4. Activate the second conveyor 4-3 to move the flexible material onto it. Activate the first electric telescopic rod 4-2 to raise the second conveyor 4-3, which will lift the flexible material. Activate the first conveyor 2 to flip the flexible material for printing. After printing, remove the material using the third conveyor 4-4 and the second conveyor 4-3.

[0103] When the flexible material is long, activate the second electric telescopic rod 4-6 to make the fourth conveyor 4-5 and the third conveyor 4-4 level. Activate the fourth conveyor 4-5 to remove the flexible material through the fourth conveyor 4-5 and rewind it before reprinting.

[0104] The beneficial effects of this specific embodiment after adopting the above structure are as follows:

[0105] 1. It is equipped with a transmission mechanism 4, a tensioning mechanism 5 and a switching mechanism 7, which facilitates the flipping of the printed flexible material without the need for manual flipping and alignment, and can directly perform flipping printing, thus improving printing efficiency.

[0106] 2. A drying mechanism 6 is provided to facilitate timely drying of ink, avoid contamination during switching, and prevent odors.

[0107] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A flexographic printing press that is easy to switch between, comprising a frame (1), a primary conveyor (2) and an inkjet cartridge (3); a primary conveyor (2) is provided at the upper end between the front and rear frames (1), and the primary conveyor (2) is connected to an external power supply; an inkjet cartridge (3) is provided at the upper right end of the primary conveyor (2). characterized in that It also includes: A transmission mechanism (4) is located on the left side of the frame (1); the transmission mechanism (4) comprises: Mounting plates (4-1), there are two mounting plates (4-1), and they are respectively fixed to the bottom left side of the front and rear frames (1); The number of electric telescopic rods (4-2) is several, and they are fixed on the mounting plate (4-1) respectively. The electric telescopic rods (4-2) are connected to an external power source. The bottom of the outer shell of the second transmission machine (4-3) is connected to the movable end of the first electric telescopic rod (4-2), and the second transmission machine (4-3) is connected to an external power source. Transmission machine No. 3 (4-4) is connected to the front and rear frames (1) and connected to an external power supply; transmission machine No. 3 (4-4) is located below transmission machine No. 1 (2); switching mechanism (7) is located on the upper right of transmission machine No. 3 (4-4); The tensioning mechanism (5) consists of two parts, each located on the left and right sides below the inkjet cartridge (3); each tensioning mechanism (5) includes: Fixed roller (5-1), the fixed roller (5-1) is located between the front and rear frames (1), and the rear end of the fixed roller (5-1) is screwed to the rear frame (1) by bearings; The No. 1 motor (5-2) is fixed on the front side of the frame (1) and is connected to an external power source; the front end of the fixed roller (5-1) passes through the front frame (1) via a shaft and bearing and is connected to the output shaft of the No. 1 motor (5-2). The third electric telescopic rod (5-3) consists of two rods, with sliding grooves (1-1) respectively opened on the front and rear frames (1). The third electric telescopic rod (5-3) is fixed on the inner top plate of the sliding groove (1-1) and is connected to an external power source. The movable end of the third electric telescopic rod (5-3) is connected to a slider (5-4). A tension roller (5-5) is located above a fixed roller (5-1). The front and rear ends of the tension roller (5-5) are connected to a slider (5-4) via shafts and bearings, respectively. The pad (5-6) is fixed between the front and rear frames (1), and the upper end of the pad (5-6) is flush with the upper end of the fixed roller (5-1). Drying mechanism (6), wherein the drying mechanism (6) is located on the right side of conveyor (2); A switching mechanism (7) is located at the right end of the frame (1); the switching mechanism (7) comprises: There are two fixing plates (7-1), which are respectively located on the outer side of the front and rear frames (1). The inner side of the fixing plate (7-1) is fixed with a fixing ring (7-2), and the fixing ring (7-2) is fixed to the frame (1). The front side of the fixing plate (7-1) is fixed with a second motor (7-3), and the second motor (7-3) is connected to an external power source. The switching roller (7-4) is screwed between the front and rear fixed plates (7-1) via a shaft and bearing. The front end of the switching roller (7-4) passes through the front fixed plate (7-1) via a shaft and bearing and is connected to the output shaft of the second motor (7-3). The right side pad (5-6) abuts against the switching roller (7-4). The left and right sides of the left side pad (5-6) are respectively fitted with the annular walls of the left and right fixed rollers (5-1). The left and right sides of the right side pad (5-6) are respectively fitted with the left fixed roller (5-1) and the right switching roller (7-4). Two bevel gear rings (7-5) are screwed onto the inner wall of the fixing plate (7-1) via bearings. A first bevel gear (7-6) is meshed on the left side of the bevel gear ring (7-5). The left side of the first bevel gear (7-6) is connected to the output shaft of the third motor (7-7). The third motor (7-7) is connected to an external power source. The third motor (7-7) is fixed to the fixing plate (7-1) via a bracket. The movable plates (7-8) are numerous and are arranged with equal rounded corners, abutting against the inner right side of the fixed plate (7-1). A screw (7-9) is inserted into the movable plate (7-8) by a threaded connection. The outer end of the screw (7-9) is screwed into the fixed ring (7-2) by a bearing. A second bevel gear (7-10) is fixed to the inner end of the screw (7-9). The second bevel gear (7-10) is meshed with the bevel gear ring (7-5). The extrusion rollers (7-11) are numerous and are respectively screwed onto the front and rear movable plates (7-8) via shafts and bearings. A first gear (7-12) is fixedly fitted at both ends of the extrusion rollers (7-11). A second gear (7-13) is meshed with the outer end of the first gear (7-12). A fourth motor (7-14) is fixed on the movable plate (7-8) and is connected to an external power source. The output shaft of the fourth motor (7-14) is connected to the second gear (7-13).

2. A flexographic printing press according to claim 1, characterized in that: The fourth transmission unit (4-5) is located below the second transmission unit (4-3), and the fourth transmission unit (4-5) is connected to an external power source; the bottom of the outer shell of the fourth transmission unit (4-5) is connected to the movable ends of several second electric telescopic rods (4-6), and the second transmission unit (4-3) is connected to an external power source; the bottom of the second electric telescopic rod (4-6) is fixed on the mounting plate (4-1).

3. A flexographic printing press for easy changeover according to claim 1, characterized in that: The drying mechanism (6) includes: The number of air boxes (6-1) is two, and they are fixed between the front and rear frames (1). The air box (6-1) is located on the right side of the inkjet cartridge (3). Several fans (6-2) are provided at the bottom of the air box (6-1). The fans (6-2) are connected to an external power supply. The air outlet of the left fan (6-2) is set downward, and the air outlet of the right fan (6-2) is set upward. Heating rods (6-3), there are several heating rods (6-3), and they are respectively installed in the left side air box (6-1); the heating rods (6-3) are connected to an external power source; Air outlet hopper (6-4), wherein the air outlet hopper (6-4) is fixed on the bellows (6-1) on the right side; A threaded tube (6-5) is threaded and fitted onto the outlet of the air duct (6-4); a filter cloth (6-6) is provided on the right side of the threaded tube (6-5). Air outlet pipe (6-7) is threaded onto threaded pipe (6-5), and several air outlet holes are provided on the right side wall of air outlet pipe (6-7).

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