Re-turn-over code spraying and product inspection device and working method thereof

Abstract

The invention relates to a re-turn-over code spraying and product detecting device and a working method thereof. The re-turn-over code spraying and product detecting device comprises a rack, an air suction box fixedly connected to the rack, an air suction belt arranged corresponding to the air suction box, a product detecting device arranged above the air suction box, a code spraying head and a curing lamp. One end of the air suction box is adjacently provided with a turn-over inner conveying device and a turn-over outer conveying device; and a re-turning inner conveying device and a re-turning outer conveying device are adjacently arranged at the other end of the air suction box. Compared with the prior art, according to the device, after paper is turned over, code spraying and product inspection are carried out, application of a high-speed efficient upward spraying and upward inspection mode is ensured, secondary turning, namely re-turning, is carried out on paper boards subjected to spraying inspection, the paper boards subjected to spraying inspection can directly enter a box pasting production line, efficient connection line production is ensured, the structure is reasonable, the production efficiency is high, and the production cost is low. The high-speed turn-over is stable and reliable, and can adapt to online high-speed output, turn-over and re-turn-over are realized, and the code spraying and product inspection method is simple.

Description

Technical Field

[0001] The invention relates to the technical field of packaging machinery, and in particular to a double-turning coding and product inspection device and a working method thereof. Background Art

[0002] In the box gluing equipment, the blank cardboard stacked on the paper feeding belt is pulled out one by one by the paper feeding belt from the gap formed between the paper feeding knife and the paper feeding belt. In order to avoid the paper feeding knife from scratching the printed surface of the blank cardboard, the blank cardboard needs to be stacked with its printed surface facing down to the surface of the paper feeding belt. In this case, on the one hand, when spraying information such as product production time on the printed surface of the blank cardboard, the spraying platform can only be placed upside down to spray ink material upward, but under the action of gravity, a certain amount of ink material will fall back to the spraying platform. As the amount of ink material falling back accumulates and increases, uneven ink marks or direct ink spots will appear on the paper, resulting in waste and defective products. In addition, when the amount of ink material falling back reaches a certain level, it will also cause the holes of the spraying platform to be blocked. This brings the trouble of stopping the machine for cleaning; on the other hand, if the quality inspection of the inkjet code or the printing quality and stains on the paper surface is to be carried out accordingly, the only way to carry out the downward inspection operation is to set the suction side of the inspection product suction and transportation platform downward, and set the detection device below the inspection product suction and transportation platform. Although this downward inspection operation mode can realize the detection of cardboard, because the suction side of the inspection product suction and transportation platform is downward, the cardboard is sucked forward by the suction and transportation platform in a suspended state. When encountering factors such as paper warping, small suction area, insufficient adsorption force and gravity, the cardboard is very easy to fall off the belt surface of the suction and transportation platform. The fallen cardboard will not only block the inspection light path of the inspection product to cause false detection, but also cause blockage at the suction and transportation platform, requiring shutdown for cleaning. In order to solve the problems existing when the spraying platform is working in an upward position and in a downward inspection mode, equipment manufacturers in the industry generally use some intermittent turning mechanisms to turn the blank cardboard over during transportation, that is, to convert the printed surface of the blank cardboard from the original downward position to the upward position, so that the spraying platform can be set to spray downward, and there will be no ink accumulation on the spraying platform and blockage of the holes of the spraying platform. Subsequently, the suction surface of the inspection paper suction and transportation platform also needs to be set upward. In this state, the cardboard is sucked forward by the suction and transportation platform in a supporting state and will not fall off the suction and transportation platform. Correspondingly, the detection device needs to be set above the inspection paper suction and transportation platform to form an upward inspection mode. The application of these current intermittent turning mechanisms has indeed solved the problems of overhead spraying and bottom inspection, but the intermittent mechanism itself has the defects of slow working speed and low production efficiency, which seriously restricts the production capacity. In addition, in order to adapt to high-speed and efficient production, the coding and detection equipment are usually integrated in the box gluer for online operation. When the box gluer is working, the printed surface of the blank cardboard is also required to face down. In this way, the cardboard turned over by the intermittent turning mechanism needs to be turned over again, that is, it can only enter the box gluer for box gluing after turning over again. The current coding and detection equipment using intermittent turning mechanisms does not have the conditions for online production due to its slow speed. It is often turned over by manual stacking after single machine production.

[0003] Therefore, a device and a working method for double-turning inkjet printing and product inspection that can be connected to a folder gluer and other product lines at high speed and stably are urgently needed in the market. Summary of the invention

[0004] The purpose of the present invention is to provide a double-turning inkjet coding and inspection device and its working method in order to overcome the defects of the above-mentioned prior art. The device ensures the application of high-speed and efficient upper inkjet and upper inspection methods by turning the paper over to perform coding and inspection operations, and then turns the paperboard over for a second time after the spray inspection, that is, double-turning, so that the paperboard that has been sprayed and inspected can directly enter the box gluing production line, ensuring efficient online production. The device is a double-turning inkjet coding and inspection device with fast turning speed, accurate paper positioning after turning over, and a double turning function.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The first object of the present invention is to provide a double-turning inkjet printing and inspection device, which comprises a frame, a suction box fixedly connected to the frame, a suction belt arranged corresponding to the suction box, an inspection device arranged above the suction box, a spray terminal arranged above the suction box and a curing lamp arranged above the suction box; an inner turning conveying device and an outer turning conveying device are adjacently arranged at one end of the suction box, the inner turning conveying device and the outer turning conveying device are positioned correspondingly, and the inner turning conveying device and the outer turning conveying device are both connected to the frame; an inner turning conveying device and an outer turning conveying device are adjacently arranged at the other end of the suction box, the inner turning conveying device and the outer turning conveying device are positioned correspondingly, and the inner turning conveying device and the outer turning conveying device are both connected to the frame.

[0007] Furthermore, the inner turning conveying device and the outer turning conveying device can both be slidably connected to the frame; the inner re-turning conveying device and the outer re-turning conveying device can both be slidably connected to the frame.

[0008] Furthermore, the flip-over inner conveying device includes an inner wheel group, an inner guide plate, an inner driving wheel, an inner conveyor belt, and a first belt support roller row; the inner wheel group and the inner driving wheel are arranged on the inner guide plate; the first belt support roller row is arranged on the edge of the inner guide plate; the first belt support roller row is arc-shaped; the inner conveyor belt is wrapped around the inner driving wheel through the inner wheel group and the first belt support roller row.

[0009] Furthermore, the inner wheel group includes an inner end wheel, an inner tensioning wheel, an inner transition roller, an inner tail wheel, and a guide wheel; the inner tensioning wheel, the inner drive wheel, and the inner transition roller are arranged on the inner guide plate; the inner end wheel, the inner tail wheel, and the guide wheel are all fixedly installed on the inner guide plate; the inner conveyor belt is wrapped around the inner drive wheel through the inner end wheel, the inner tensioning wheel, the inner transition roller, the inner tail wheel, the guide wheel and the first belt support roller row.

[0010] Furthermore, the first belt support roller row includes a first inner plate, a first outer plate, and a first belt support roller; the first belt support roller is installed between the first inner plate and the first outer plate.

[0011] Furthermore, the flip-over outer conveying device includes an outer wheel group, an outer guide plate, an outer driving wheel, an outer conveyor belt and a support arm; the support arm is hinged on the outer guide plate; the outer wheel group and the outer driving wheel are arranged on the outer guide plate; the outer wheel group includes an outer tail wheel, and the outer tail wheel is fixedly installed on the support arm; the outer conveyor belt is wrapped around the outer driving wheel through the outer wheel group.

[0012] Furthermore, the outer wheel group includes an outer end wheel, an outer tensioning wheel, an outer transition guide wheel, and an outer tail wheel; the outer wheel group is arranged on the outer guide plate; the outer wheel group includes an outer tail wheel, and the outer tail wheel is installed on the support arm; the outer conveyor belt is wrapped around the outer drive wheel through the outer end wheel, the outer tensioning wheel, the outer transition guide wheel, and the outer tail wheel.

[0013] Furthermore, the height position of the outer tail wheel can be adjusted by adjusting the support arm, ensuring that papers of different thicknesses can be output smoothly.

[0014] Furthermore, the wheel surfaces of the guide wheel and the inner tail wheel are slightly higher than the belt support roller surfaces in the first belt support roller row or are parallel to the belt support roller surfaces in the first belt support roller row, so that the tensile pressure applied by the inner conveyor belt on the first belt support rollers at both ends of the first belt support roller row is borne by the guide wheel and the inner tail wheel, thereby enhancing the reliability of the first belt support roller row.

[0015] Furthermore, the inner layer end wheel is arranged at an arc center offset from the first belt support roller row relative to the guide wheel. By arranging the inner layer end wheel at an arc center offset from the guide wheel, the inner layer conveyor belt naturally forms an upward inclined surface at the two wheels, and the inclined surface and the outer layer conveyor belt form a paper feeding angle with an open mouth.

[0016] Furthermore, the inner transition roller guides the inner conveyor belt to avoid physical interference with other parts. The other transition rollers have the same function.

[0017] Furthermore, the compound inner conveying device includes a compound inner layer wheel group, a compound inner layer guide plate, a compound inner layer driving wheel, a compound inner layer conveyor belt, and a second belt support roller row; the compound inner layer wheel group and the compound inner layer driving wheel are arranged on the compound inner layer guide plate; the second belt support roller row is arranged on the edge of the compound inner layer guide plate; the second belt support roller row is arc-shaped; the compound inner layer conveyor belt is wrapped around the compound inner layer driving wheel through the compound inner layer wheel group and the second belt support roller row.

[0018] Furthermore, the compound inner layer wheel set includes a compound inner layer end wheel, a compound inner layer tensioning wheel, a compound outer layer transition guide wheel, and a compound inner layer tail wheel; the compound inner layer tensioning wheel, the compound inner layer driving wheel, and the compound outer layer transition guide wheel are arranged on the compound inner layer guide plate; the compound inner layer end wheel and the compound inner layer tail wheel are fixedly installed on the compound inner layer guide plate; the compound inner layer conveyor belt is wrapped around the compound inner layer driving wheel through the compound inner layer end wheel, the compound inner layer tensioning wheel, the compound outer layer transition guide wheel, the compound inner layer tail wheel and the second belt support roller row.

[0019] Furthermore, the second belt support roller row includes a second inner plate, a second outer plate, and second belt support rollers; the second belt support rollers are installed between the second inner plate and the second outer plate.

[0020] Furthermore, the compound outer conveying device includes a compound outer layer wheel set, a compound outer layer guide plate, a compound outer layer driving wheel, a compound outer layer conveyor belt and a compound support arm; the compound support arm is hinged on the compound outer layer guide plate; the compound outer layer wheel set and the compound outer layer driving wheel are arranged on the compound outer layer guide plate; the compound outer layer wheel set includes a compound outer layer tail wheel, and the compound outer layer tail wheel is fixedly mounted on the compound support arm; the compound outer layer conveyor belt is wrapped around the compound outer layer driving wheel through the compound outer layer wheel set.

[0021] Furthermore, the compound outer layer wheel group includes a compound outer layer end wheel, a compound outer layer tensioning wheel, a compound outer layer transition guide wheel, and a compound outer layer tail wheel; the compound outer layer tensioning wheel, the compound outer layer driving wheel, and the compound outer layer transition guide wheel are arranged on the compound outer layer guide plate; the compound outer layer end wheel is fixedly mounted on the compound outer layer guide plate; the compound outer layer tail wheel is fixedly mounted on the compound support arm; the compound outer layer conveyor belt is wrapped around the compound outer layer driving wheel through the compound outer layer end wheel, the compound outer layer tensioning wheel, the compound outer layer transition guide wheel, and the compound outer layer tail wheel.

[0022] Furthermore, the height position of the outer tail wheel of the double-sided surface can be adjusted by adjusting the double-sided support arm, thereby ensuring that papers of different thicknesses can be output smoothly.

[0023] Furthermore, the back surface of the horizontal section of the suction belt is in contact with and connected to the top surface of the suction box.

[0024] Furthermore, the double-turning inkjet coding and inspection device also includes a suction belt tensioning roller, a suction belt driving roller, and a suction belt transition roller; the suction belt transition roller is arranged on both sides of the suction box and below the suction box; the suction belt transition roller and the suction belt driving roller are arranged below the suction box; the suction belt is wrapped around the suction belt driving roller through the suction belt tensioning roller and the suction belt transition roller.

[0025] Furthermore, the re-turning coding and inspection device also includes a waste rejection plate, an upper conveying channel, and a lower conveying channel; the waste rejection plate can be movably arranged at the output end of the re-turning external conveying device; the upper conveying channel and the lower conveying channel are arranged on one side of the waste rejection plate; the upper conveying channel is used to convey qualified products; the lower conveying channel is used to convey waste and defective products.

[0026] Furthermore, the reject plate is communicatively connected to the inspection device, and the communication connection includes a wired or wireless connection.

[0027] Furthermore, the upper conveying channel is used to convey qualified products, and outputs the qualified products to the box gluing machine for direct box gluing operations; the lower conveying channel is used to convey waste and defective products, and sends the waste and defective products to the unqualified product collection area.

[0028] Furthermore, the first belt support roller row and the second belt support roller row are both belt support roller rows, and the belt support roller row includes an inner plate, an outer plate, and belt support rollers; the belt support rollers are installed between the inner plate and the outer plate.

[0029] Furthermore, the inner plate and the outer plate are both arc-shaped plates, and the belt support roller is in an arc shape.

[0030] Furthermore, the inner conveyor belt, the outer conveyor belt, the double-surface inner conveyor belt, and the double-surface outer conveyor belt all include arc segments.

[0031] The second object of the present invention is to provide a working method of a double-turnover coding and inspection device, comprising the following steps:

[0032] The outer conveyor belt is tightly attached to the arc section of the inner conveyor belt. The inner conveyor belt is driven by the inner conveyor belt and the outer conveyor belt is driven by the outer driving wheel to hold the cardboard and rotate 180 degrees along the arc surface, so as to turn the cardboard over. The turned cardboard is sent to the suction box. Under the action of the suction belt, the cardboard is sucked forward and transported. During this transportation process, the spray terminal sprays out graphics and texts and solidifies them by fixed lights. The inspection device detects the graphics and texts and the printed surface of the paper. Then the cardboard is held by the double-surface outer conveyor belt and the double-surface inner conveyor belt to turn it over 180 degrees again, so that the paper surface of the cardboard is restored to the state where the printed surface faces down.

[0033] Afterwards, the reject plate performs corresponding actions according to the signals sent by the inspection device, allowing qualified products to be output from the upper conveying channel to the box gluer for direct box gluing operations, and allowing waste and defective products to be introduced into the lower conveying channel and enter the unqualified product collection area.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1) The present technical solution provides a double-turning inkjet and inspection device and its working method. By turning the paper over to perform inkjet and inspection, the application of high-speed and efficient upper inkjet and upper inspection is ensured. The cardboard after the inspection is turned over again, that is, double-turning, allows the inspected cardboard to directly enter the box gluing production line, ensuring efficient online production. It has the advantages of reasonable structure, stable and reliable high-speed turning, and can adapt to online high-speed output. The method of turning over and double-turning, inkjet and inspection is simple.

[0036] 2) The double-turning coding and inspection device provided by this technical solution has a structural setting, in which the outer conveyor belt can naturally cling to the arc section belt surface of the inner conveyor belt, and the inner and outer conveyor belts can hold the paper and rotate 180 degrees along the arc surface under the drive of their respective driving wheels, thereby realizing the cardboard flipping, and the cardboard will not move during the flipping process; the double-turning outer conveyor belt and the double-turning inner conveyor belt can hold the paper and rotate 180 degrees along the arc surface again under the drive of their respective driving wheels, thereby realizing the second flipping of the cardboard, i.e. double flipping. It has the advantages of fast flipping and double flipping speed, and accurate paper positioning after flipping and double flipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the structure of the double-turnover coding and inspection device in Example 1 of the present technical solution.

[0038] Figure 2 This is a schematic structural diagram of the inverting conveying device in Example 1 of the present technical solution.

[0039] Figure 3 This is a schematic structural diagram of the flip-over external conveying device in Example 1 of the present technical solution.

[0040] Figure 4 This is a schematic structural diagram of the in-plane conveying device in Example 1 of the present technical solution.

[0041] Figure 5 This is a schematic diagram of the structure of the double-turning external conveying device in Example 1 of the present technical solution.

[0042] Figure 6 This is a schematic diagram of the structure of the belt support roller row in Example 1 of the present technical solution.

[0043] Figure 7This is a schematic diagram of the setting of the suction belt in Example 1 of the present technical solution.

[0044] Figure 8 This is a schematic diagram of the structure of the combined double-turnover coding and inspection device in Example 2 of the present technical solution.

[0045] The numbers in the figure show:

[0046] 1 inner conveying device for turning over, 2 outer conveying device for turning over, 3 suction box, 4 spray dock, 5 curing lamp, 6 inspection device, 7 inner conveying device for double turning over, 8 outer conveying device for double turning over, 9 suction belt, 10 cardboard, 11 waste rejection board, 12 upper conveying channel, 13 lower conveying channel.

[0047] 101 inner layer end wheel, 102 inner layer guide plate, 103 inner layer tensioning wheel, 104 inner layer driving wheel, 105 inner layer transition roller, 106 inner layer conveyor belt, 107 inner layer tail wheel, 109 guide belt wheel.

[0048] 108 belt support roller row, 1081 inner plate, 1082 outer plate, 1083 belt support roller.

[0049] 201 outer layer end wheel, 202 outer layer guide plate, 203 outer layer tensioning wheel, 204 outer layer driving wheel, 205 outer layer transition guide wheel, 206 outer layer conveyor belt, 207 outer layer tail wheel, 208 support arm.

[0050] 701 compound surface inner layer end wheel, 702 compound surface inner layer guide plate, 703 compound surface inner layer tensioning wheel, 704 compound surface inner layer driving wheel, 705 compound surface inner layer transition roller, 706 compound surface inner layer conveyor belt, 707 compound surface inner layer tail wheel.

[0051] 801 compound surface outer layer end wheel, 802 compound surface outer layer guide plate, 803 compound surface outer layer tensioning wheel, 804 compound surface outer layer driving wheel, 805 compound surface outer layer transition guide wheel, 806 compound surface outer layer conveyor belt, 807 compound surface outer layer tail wheel, 808 compound surface support arm. DETAILED DESCRIPTION

[0052] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The features such as component models, material names, connection structures, control methods, etc. that are not clearly described in this technical solution are all regarded as common technical features disclosed in the prior art.

[0053] Example 1

[0054] This embodiment provides a double-turning coding and inspection device, such as Figure 1As shown, the double-turning coding and inspection device includes a frame (the overall structure of the frame is a conventional structure, not shown in the figure), a suction box 3 fixedly connected to the frame, a suction belt 9 matching the suction box 3, an inspection device 6, a spray terminal 4 and a curing lamp 5 arranged above the suction box 3, and is characterized in that: an inner turning conveying device 1 and an outer turning conveying device 2 are adjacently arranged at one end of the suction box 3, and the inner turning conveying device 1 and the outer turning conveying device 2 are positioned correspondingly, and the inner turning conveying device 1 and the outer turning conveying device 2 can both be slidably connected to the frame, and a double-turning inner conveying device 7 and a double-turning outer conveying device 8 are adjacently arranged at the other end of the suction box 3, and the inner turning conveying device 7 and the outer turning conveying device 8 are positioned correspondingly, and the inner turning conveying device 7 and the outer turning conveying device 8 can both be slidably connected to the frame.

[0055] The re-turning coding and inspection device also includes a reject plate 11, an upper conveying channel 12, and a lower conveying channel 13; the reject plate 11 can be movably arranged at the output end of the re-turning outer conveying device 8; the upper conveying channel 12 and the lower conveying channel 13 are arranged on one side of the reject plate 11; the upper conveying channel 12 is used to convey qualified products; the lower conveying channel 13 is used to convey waste and defective products. The reject plate 11 is connected to the inspection device 6 in communication, and the communication connection includes a wired or wireless connection. The inspection device 6 includes a controller, and the controller is a mainstream single-chip microcomputer or one of the x86 architecture, ARM architecture, and RISC-V architecture processors. One end of the reject plate 11 is rotatable and can be connected to the upper conveying channel 12 or the lower conveying channel 13 to convey the product to different channels. The upper conveying channel 12 and the lower conveying channel 13 are both channels for transporting products through rollers.

[0056] Figure 1 The figure shows the change of orientation of the printed surface b of the paperboard 10 at three different workstations. By arranging the inner end wheel 101 at an arc center relative to the guide wheel 109, the inner conveyor belt 106 naturally forms an upward inclined surface at the two wheels, and the inclined surface and the outer conveyor belt 206 form a paper feeding angle a with an open mouth.

[0057] like Figure 2 As shown, the flip-over inner conveying device 1 includes an inner guide plate 102, on which an inner driving wheel 104 is rotatably arranged, on which an inner tensioning wheel 103 is arranged, on which an inner end wheel 101, an inner tail wheel 107 and a guide belt wheel 109 are fixedly mounted, and a first belt support roller row is arranged on the edge of the inner guide plate 102, and the first belt support roller row is in an arc shape, and the inner conveyor belt 106 is wrapped around the inner driving wheel 104 through the above-mentioned wheels and the first belt support roller row.

[0058] like Figure 3As shown, the flip-over outer conveying device 2 includes an outer guide plate 202 and a support arm 208, the support arm 208 is hinged on the outer guide plate 202, an outer driving wheel 204 is rotatably arranged on the outer guide plate 202, an outer tensioning wheel 203 is arranged on the outer guide plate 202, an outer end wheel 201 is fixedly installed on the outer guide plate 202, an outer tail wheel 207 is fixedly installed on the support arm 208, and the outer conveyor belt 206 is wrapped around the outer driving wheel 204 through the above-mentioned wheels.

[0059] like Figure 4 As shown, the compound inner layer conveying device 7 includes a compound inner layer guide plate 702, on which a compound inner layer driving wheel 704 is rotatably arranged, a compound inner layer tensioning wheel 703 is arranged on the compound inner layer guide plate 702, and a compound inner layer end wheel 701 and a compound inner layer tail wheel 707 are fixedly installed on the compound inner layer guide plate 702. A second belt support roller row is arranged on the edge of the compound inner layer guide plate 702, and the second belt support roller row is in an arc shape. The compound inner layer conveyor belt 706 is wrapped around the compound inner layer driving wheel 704 through the above-mentioned wheels and the second belt support roller row.

[0060] like Figure 5 As shown, the compound outer flipping conveying device 8 includes a compound outer layer guide plate 802 and a compound support arm 808, the compound support arm 808 is hinged on the compound outer layer guide plate 802, a compound outer layer driving wheel 804 is rotatably arranged on the compound outer layer guide plate 802, a compound outer layer tensioning wheel 803 is arranged on the compound outer layer guide plate 802, a compound outer layer end wheel 801 is fixedly installed on the compound outer layer guide plate 802, a compound outer layer tail wheel 807 is fixedly installed on the compound support arm 808, and the compound outer layer conveyor belt 806 is wrapped around the compound outer layer driving wheel 804 through the above-mentioned wheels.

[0061] like Figure 6 As shown, the first belt support roller row and the second belt support roller row are both belt support roller rows 108 , and the belt support roller row 108 includes an inner plate 1081 , an outer plate 1082 , and belt support rollers 1083 ; the belt support rollers 1083 are installed between the inner plate 1081 and the outer plate 1082 .

[0062] like Figure 7 As shown, the suction belt transition roller 903 is arranged on both sides of the suction box 3 and below the suction box 3; the suction belt transition roller 903 and the suction belt driving roller 902 are arranged below the suction box 3; the suction belt 9 is wrapped around the suction belt driving roller 902 through the suction belt tensioning roller 901 and the suction belt transition roller 903.

[0063] During operation, the outer conveyor belt 206 can naturally cling to the arc segment of the inner conveyor belt 106. The inner and outer conveyor belts, driven by their respective driving wheels, can hold the cardboard 10 and rotate 180 degrees along the arc surface, thereby turning the cardboard 10 over, and sending the turned cardboard 10 to the suction box 3. Under the action of the suction belt 9, the cardboard 10 is sucked and transported forward. During this transportation process, the spray terminal 4 sprays out graphics and texts, which are solidified by the fixed lamp 5. The inspection device 6 realizes the inspection of graphics and texts and paper. The printed surface b of the cardboard 10 is detected, and then the cardboard 10 is held by the combined action of the double-faced outer conveyor belt 806 and the double-faced inner conveyor belt 706, and is turned over 180 degrees again, so that the paper surface of the cardboard 10 is restored to the state where the printed surface b faces downward. At this time, the waste rejection plate 11 performs corresponding actions according to the signal sent by the inspection device 6, so that qualified products are output from the upper conveying channel 12 to the box gluer for direct box gluing operation, and waste and defective products are introduced into the lower conveying channel 13 to enter the unqualified product collection area.

[0064] Example 2

[0065] like Figure 8 As shown, Figure 8 In this embodiment, Figure 1 A schematic structural diagram of a double-turnover coding and inspection device for combined application of a double-turnover coding and inspection device.

[0066] Can Figure 1 The disclosed structures can be combined in parallel in several ways, and the actual application is not limited to Figure 7 The combination shown in the figure (multiple sets of the double-turning inkjet printing and inspection devices in Example 1 are arranged in parallel). (The paper feeding direction is shown in the figure)

[0067] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A device for double-turning, inkjet printing and product inspection, characterized in that: The double-turning inkjet coding and inspection device comprises a frame, a suction box (3) fixedly connected to the frame, a suction belt (9) arranged corresponding to the suction box (3), an inspection device (6) arranged above the suction box (3), a spraying platform (4) arranged above the suction box (3), and a curing lamp (5) arranged above the suction box (3); An inner flipping conveying device (1) and an outer flipping conveying device (2) are disposed adjacent to one end of the suction box (3); the inner flipping conveying device (1) and the outer flipping conveying device (2) are located in corresponding positions; and the inner flipping conveying device (1) and the outer flipping conveying device (2) are both connected to the frame; The other end of the suction box (3) is adjacently provided with an inner conveying device (7) for the re-turning surface and an outer conveying device (8) for the re-turning surface. The inner conveying device (7) for the re-turning surface and the outer conveying device (8) for the re-turning surface are positioned correspondingly. The inner conveying device (7) for the re-turning surface and the outer conveying device (8) for the re-turning surface are both connected to the frame.

2. According to claim 1, a double-turning coding and inspection device is characterized in that: The inner turning conveying device (1) comprises an inner wheel set, an inner guide plate (102), an inner driving wheel (104), an inner conveying belt (106), and a first belt supporting roller row; The inner wheel set and the inner driving wheel (104) are arranged on the inner guide plate (102); The first belt-supporting roller row is arranged on the edge of the inner guide plate (102); The first belt-supporting roller row is in an arc shape; The inner conveyor belt (106) is wrapped around the inner driving wheel (104) via an inner wheel set and a first belt-supporting roller row.

3. A double-turnover coding and inspection device according to claim 2, characterized in that: The first belt-supporting roller row includes a first inner plate, a first outer plate, and a first belt-supporting roller; The first belt-supporting roller is installed between the first inner plate and the first outer plate.

4. The device for double-turning over and spraying codes and inspecting products according to claim 1, characterized in that: The outer turning conveying device (2) comprises an outer wheel set, an outer guide plate (202), an outer driving wheel (204), an outer conveying belt (206) and a support arm (208); The support arm (208) is hinged on the outer guide plate (202); The outer wheel set and the outer driving wheel (204) are arranged on the outer guide plate (202); The outer wheel assembly comprises an outer tail wheel (207), and the outer tail wheel (207) is installed on the support arm (208); The outer conveyor belt (206) is wrapped around the outer driving wheel (204) via an outer wheel set.

5. The device for double-turning over and spraying codes and inspecting products according to claim 1, characterized in that: The double-turning inner conveying device (7) comprises a double-turning inner layer wheel set, a double-turning inner layer guide plate (702), a double-turning inner layer driving wheel (704), a double-turning inner layer conveying belt (706), and a second belt-supporting roller row; The compound surface inner layer wheel set and the compound surface inner layer driving wheel (704) are arranged on the compound surface inner layer guide plate (702); The second belt-supporting roller row is arranged on the edge of the double-surface inner guide plate (702); The second belt support roller row is in an arc shape; The double-surface inner conveyor belt (706) is wrapped around the double-surface inner driving wheel (704) via a double-surface inner wheel set and a second belt-supporting roller row.

6. A double-turnover coding and inspection device according to claim 5, characterized in that: The second belt-supporting roller row includes a second inner plate, a second outer plate, and second belt-supporting rollers; The second belt-supporting roller is installed between the second inner plate and the second outer plate.

7. The device for double-turning over and spraying codes and inspecting products according to claim 1, characterized in that: The double-turn outer conveying device (8) comprises a double-turn outer wheel set, a double-turn outer guide plate (802), a double-turn outer driving wheel (804), a double-turn outer conveying belt (806) and a double-turn support arm (808); The compound surface support arm (808) is hingedly supported on the compound surface outer layer guide plate (802); The compound outer layer wheel set and the compound outer layer driving wheel (804) are arranged on the compound outer layer guide plate (802); The compound outer wheel set comprises a compound outer tail wheel (807), and the compound outer tail wheel (807) is installed on a compound support arm (808); The double-surface outer conveyor belt (806) is wrapped around the double-surface outer driving wheel (804) via a double-surface outer wheel set.

8. The device for double-turning over and spraying codes and inspecting products according to claim 1, characterized in that: The back side of the horizontal section of the air suction belt (9) is in contact with and connected to the top surface of the air suction box (3); The double-turning coding and product inspection device further comprises a suction belt tensioning roller (901), a suction belt driving roller (902), and a suction belt transition roller (903); The air suction belt transition roller (903) is arranged on both sides of the air suction box (3) and below the air suction box (3); The air suction belt transition roller (903) and the air suction belt driving roller (902) are arranged below the air suction box (3); The suction belt (9) is wrapped around the suction belt driving roller (902) via a suction belt tensioning roller (901) and a suction belt transition roller (903).

9. The device for double-turning over, spraying, and inspecting products according to claim 1, characterized in that: The double-turning coding and product inspection device also includes a reject plate (11), an upper conveying channel (12), and a lower conveying channel (13); The waste rejection plate (11) can be movably arranged at the output end of the reversing outer conveying device (8); The upper conveying channel (12) and the lower conveying channel (13) are arranged on one side of the waste rejection plate (11).

10. A working method of the double-turnover coding and inspection device according to any one of claims 1 to 9, characterized in that: The steps include: The outer conveyor belt (206) is closely attached to the arc segment belt surface of the inner conveyor belt (106), and the inner conveyor belt (106) is driven by the inner driving wheel (104) and the outer conveyor belt is driven by the outer driving wheel (204) to clamp the paperboard (10) and rotate 180 degrees along the arc surface, thereby realizing the turning over of the paperboard (10); The turned-over cardboard (10) is sent to the suction box (3), and the cardboard (10) is sucked and transported forward under the action of the suction belt (9). During this transportation process, the spray terminal (4) sprays out the image and text, which are solidified by the fixed lamp (5), and the inspection device (6) realizes the inspection of the image and text and the printed surface of the cardboard (10); The paperboard (10) is held by the double-surface outer conveyor belt (806) and the double-surface inner conveyor belt (706) to be turned over 180 degrees again, thereby restoring the paper surface of the paperboard (10) to a state where the printing surface faces downward.

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