Environment-friendly printing device for packaging carton

Abstract

The utility model relates to the field of packaging box printing equipment, in particular to a packaging carton environment-friendly printing device which comprises a printing machine, a conveyor, a mounting shell, an exhaust assembly arranged on the mounting shell and a filtering assembly. A notch is formed in the closed end of the mounting shell; the exhaust assembly comprises a first suction hood, a second suction hood, a connecting pipe arranged outside the mounting shell and a suction ventilator connected to the middle of the connecting pipe, wherein the two ends of the connecting pipe communicate with the first suction hood and the second suction hood correspondingly. The filtering assembly comprises a sealing cover fixed to the mounting shell and arranged outside the suction fan in a covering mode, a filtering box inserted into the sealing cover and filled with activated carbon, a U-shaped connecting plate fixedly connected to the outer wall of the filtering box, an air conveying pipe with one end fixedly connected to and communicated with the sealing cover, and a water tank connected to the other end of the air conveying pipe. The end, away from the sealing cover, of the gas conveying pipe is located in the water tank and suspended at the inner bottom of the water tank, an exhaust pipe is arranged on the water tank, and the effect of reducing harm of gas generated by pigment to the bodies of workers is achieved.

Description

Technical Field

[0001] This application relates to the technical field of packaging box printing equipment, and in particular to an environmentally friendly printing device for packaging paper boxes. Background Technology

[0002] Currently, packaging boxes are mainly used for packaging goods. With social development and people's increasing attention to environmental protection, harmless, pollution-free, and recyclable environmentally friendly packaging boxes are accepted by the public. Cardboard, as a recyclable material, is widely used in the production of packaging boxes.

[0003] In the process of making packaging boxes, the information of the items to be packaged needs to be printed on the surface of the raw materials of the packaging box, and then the packaging box is assembled.

[0004] The existing technical solutions mentioned above have the following drawbacks: After printing a large number of paperboards, it is necessary to place a large number of paperboards together and let the ink printed on the paperboards dry naturally. During the drying process, the drying speed is relatively slow, and the ink on a large number of paperboards will emit a strong odor. The odor produced by the ink will not only harm the health of the printing workshop workers, but also pollute the working environment in the workshop, which is not conducive to the workers' printing work. Utility Model Content

[0005] This application provides an environmentally friendly printing device for packaging paper boxes to reduce the harm of gases generated by pigments to workers' health.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] An environmentally friendly printing device for packaging paper boxes includes a printing machine with a discharge port on one side, a conveyor fixed to the printing machine and with the feeding end conveying plane lower than the discharge port, a mounting shell mounted on the conveyor and fixed to the printing machine, an exhaust assembly disposed on the mounting shell, and a filter assembly disposed outside the mounting shell.

[0008] The end of the mounting shell furthest from the printing press is a closed end and is located above the material feeding end of the conveyor. A notch with the same width as the conveyor's conveying plane is opened at the bottom of the closed end of the mounting shell.

[0009] The exhaust assembly includes a first suction hood and a second suction hood disposed at both ends inside the mounting housing, a connecting pipe disposed outside the mounting housing and connected at both ends to the first suction hood and the second suction hood respectively, and a suction fan connected to the middle of the connecting pipe.

[0010] The filter assembly includes a sealing cover fixed to the mounting housing and covering the outside of the suction fan, a filter box containing activated carbon inserted into the sealing cover, a U-shaped connecting plate fixed to the outer wall of the filter box, an air supply pipe fixed at one end and connected to the sealing cover, and a water tank connected to the other end of the air supply pipe. The end of the exhaust pipe away from the sealing cover is located inside the water tank and suspended at the bottom of the water tank. An exhaust pipe is provided on the water tank.

[0011] By adopting the above technical solution, the mounting shell can provide a relatively sealed drying space for the printed packaging box, and contain the odorous gas generated during the drying process. After the suction fan is started, the gas diffused in the mounting shell can be sucked out through the first and second suction hoods. After the gas passes through the filter box, most of the odorous substances can be effectively adsorbed by activated carbon. The gas after being adsorbed by activated carbon then enters the water tank through the gas delivery pipe. The gas blown into the water can precipitate other harmful and water-soluble substances in the gas again. After the gas passes through the water, it is discharged through the exhaust pipe, which can basically achieve the purification of the odorous harmful gas generated during the pigment drying process, thereby reducing the possibility of health hazards to the workers in the production workshop.

[0012] Optionally, the sealing cover has an insertion hole for inserting the filter box, and after the filter box is inserted into the insertion hole, its outer wall fits against the inner wall of the sealing cover.

[0013] The connecting plate includes a sealing plate that is fixed to the outer wall of the filter box and can seal the insertion hole, a clamping plate integrally formed with both ends of the sealing plate, and a snap-fit ​​plate integrally bent into the clamping plate on a section away from the sealing plate. The snap-fit ​​plate can be snapped onto the outer wall of the sealing cover.

[0014] By adopting the above technical solution, after long-term adsorption and filtration of odorous gases, the filter box can be removed by pulling the sealing plate. This facilitates the replacement of the activated carbon filled in the filter box and also helps to ensure the sealing performance of the sealing cover.

[0015] Optionally, a sealing gasket is adhered to the surface of the connecting plate facing the filter box.

[0016] By adopting the above technical solution, the sealing performance of the sealing plate to the insertion hole is further improved, reducing the possibility of leakage of odorous gas.

[0017] Optionally, both the first and second suction hoods are square.

[0018] By adopting the above technical solution, the square suction hood is convenient to install on the inner wall of the printing press and the closed end of the mounting shell, while also increasing the suction area of ​​the suction hood opening within the limited space inside the mounting shell, effectively improving exhaust efficiency.

[0019] Optionally, the lower opening of the first suction hood is inclined toward the closed end of the mounting shell, and the lower opening of the second suction hood is inclined toward the printing press.

[0020] By adopting the above technical solution, the two air intake hoods are set at an angle to each other, which can improve the efficiency of exhausting the gas diffused in the mounting shell.

[0021] Optionally, the mounting housing is further provided with a drying assembly, which includes a blower mounted on the mounting housing, a mounting pipe connected to the blower and having closed ends at both ends, a heating wire disposed in the mounting pipe, and an air outlet pipe fixedly inserted through the outer wall of the mounting housing and blowing air into the mounting housing.

[0022] By adopting the above technical solution, the drying component has the characteristics of simple structure and fast heating rate, and can carry out continuous and efficient drying of large batches of packaging cardboard.

[0023] Optionally, the air outlet pipe is inclined and its lower end is suspended above the conveying plane of the conveyor.

[0024] By adopting the above technical solution, the hot air blown onto the cardboard packaging box through the air outlet pipe can not only increase the drying area of ​​the cardboard packaging box, but also create downward pressure on the cardboard packaging box, so that the cardboard packaging box is stably conveyed on the conveyor.

[0025] Optionally, two mounting tubes are provided, and the two mounting tubes are respectively provided on the two outer walls of the mounting shell facing away from each other;

[0026] Multiple air outlet pipes are installed along the length of the outer wall of the installation pipe.

[0027] By adopting the above technical solutions, the drying efficiency of packaging cardboard can be further improved.

[0028] Optionally, an observation window is provided on each of the two opposite side walls of the mounting housing near the printing press.

[0029] By adopting the above technical solution, it is easier for staff to observe the printed packaging box cardboard.

[0030] In summary, this application has the following technical effects:

[0031] 1. By setting up a printing machine, conveyor, mounting shell, exhaust assembly, and filter assembly, most of the odorous substances in the gas can be effectively adsorbed by activated carbon after passing through the filter box. The gas after being adsorbed by activated carbon then enters the water tank through the gas delivery pipe. The gas is blown into the water, which can precipitate other harmful and water-soluble substances in the gas again. After the gas passes through the water, it is discharged through the exhaust pipe, which can basically achieve the purification of the odorous and harmful gases generated during the pigment drying process, thereby reducing the possibility of harm to the health of workers in the production workshop.

[0032] 2. By setting up insertion holes, sealing plates, clamping plates, and snap-fit ​​plates, it is not only convenient to replace the activated carbon filled in the filter box, but also to ensure the sealing performance of the sealing cover.

[0033] 3. By setting up a drying component, which has the characteristics of simple structure and fast heating rate, it can carry out continuous and efficient drying of large batches of packaging cardboard. Attached Figure Description

[0034] Figure 1 This is a structural diagram of the object of this application;

[0035] Figure 2 This is a structural diagram of the external shape from another perspective of this application;

[0036] Figure 3 It is a cross-sectional structural diagram of the mounting shell;

[0037] Figure 4 This is a structural diagram of the drying assembly;

[0038] Figure 5 This is a structural diagram showing the fit between the sealing cover and the filter box.

[0039] Explanation of reference numerals in the attached drawings: 1. Printing machine; 11. Discharge port; 2. Conveyor; 21. Support plate; 22. Mounting edge; 23. Conveyor belt; 3. Mounting shell; 31. Notch; 4. Drying assembly; 41. Blower; 42. Air blowing pipe; 43. Mounting pipe; 44. Heating wire; 45. Air outlet pipe; 5. Observation window; 6. Exhaust assembly; 61. First suction hood; 62. Second suction hood; 63. Connecting pipe; 64. Blower; 7. Filter assembly; 71. Sealing cover; 72. Filter box; 73. Connecting plate; 731. Sealing plate; 732. Clamping plate; 733. Clip plate; 74. Sealing gasket; 75. Air supply pipe; 76. Water tank; 761. Drain pipe; 77. Exhaust pipe. Detailed Implementation

[0040] The present application will be further described in detail below with reference to the accompanying drawings.

[0041] This application discloses an environmentally friendly printing device for packaging paper boxes, combined with... Figure 1 and Figure 2 The environmentally friendly printing device includes a printing machine 1, a conveyor 2 whose feeding end is fixedly connected to the printing machine 1, a mounting shell 3 fixedly mounted on the printing machine 1, a drying component 4 mounted on the mounting shell 3 for drying the packaging boxes, an observation window 5 mounted on the mounting frame, an exhaust component 6 mounted on the mounting shell 3 for exhausting the interior of the mounting shell 3, and a filter component 7 fixedly connected to the exhaust end of the exhaust component 6.

[0042] Reference Figure 1 The printing press 1 has a discharge port 11 for discharging packaging paper boxes on one side. The feeding end of the conveyor 2 is connected to the side of the printing press 1 with the discharge port 11. The discharge port 11 is higher than the conveying surface of the conveyor 2, and the discharge direction of the discharge port 11 is consistent with the conveying direction of the conveyor 2.

[0043] Reference Figure 1 The conveyor 2 includes two support plates 21 that are parallel to each other in the length direction and whose surfaces are opposite to each other, an mounting edge 22 that is fixedly mounted on the upper edge of the support plates 21 and located outside the two support plates 21, and a conveyor belt 23 that is rotatably mounted between the two support plates 21. The conveying plane of the conveyor belt 23 is lower than the upper edge of the support plates 21, and the feeding end of the conveyor belt 23 is located below the discharge port 11. After the packaging paper box is printed in the printing machine 1, it is discharged through the discharge port 11 and falls onto the conveyor belt 23. The conveyor belt 23 rotates to transport the packaging paper box and dry the ink on the packaging paper box.

[0044] Reference Figure 1 The mounting shell 3 is fixedly mounted on the mounting edge 22 along its length, and the mounting shell 3 and the mounting edge 22 are parallel to each other in their length directions. The two ends of the mounting shell 3 are an open end and a closed end, respectively. The open end is fixedly connected to the side wall of the printing machine 1 where the discharge port 11 is opened, and the closed end is located on the discharge end of the conveyor belt 23. A notch 31 for the packaging carton to be discharged is opened on the lower edge of the closed end. The length of the notch 31 is consistent with the distance between the two support plates 21. Multiple flexible strips are fixed on the closed end to cover the notch 31. When the packaging carton does not enter the notch 31, the flexible strips can cover the notch 31, reducing the possibility of gas generated during the drying process of pigment leaking out through the notch 31.

[0045] Reference Figure 2 The observation window 5 is made of transparent acrylic sheet. There are two observation windows 5, which are fixed on opposite sides of the mounting shell 3 along the length direction and close to the printing machine 1. The observation windows 5 allow the staff to observe the state of the packaging box after printing. The two observation windows 5 are set opposite each other to allow light to enter the interior of the mounting shell 3 better, thus facilitating better observation of the printed packaging box.

[0046] Combination Figure 3 and Figure 4 The drying assembly 4 includes a blower 41 mounted on the top surface of the mounting housing 3, a blower pipe 42 fixedly connected to and communicating with the air outlet of the blower 41 in the middle, mounting pipes 43 fixedly connected to both ends of the blower pipe 42 and located on opposite sides of the mounting housing 3 in the length direction, a heating wire 44 disposed inside the mounting pipe 43, and two sets of air outlet pipes 45 fixedly passing through both sides of the mounting housing 3 in the length direction and fixedly connected to and communicating with the mounting pipes 43 at one end.

[0047] The blower duct 42 is a U-shaped tube, the width of the U-shaped opening of the blower duct 42 is the same as the width of the mounting shell 3, and the blower duct 42 is clamped onto the mounting shell 3 with the opening facing downwards. The mounting tube 43 is a square tube with closed ends, which facilitates installation on the outer wall of the mounting shell 3. The heating wire 44 is connected to an external power supply. When the power is turned on, each set of air outlet ducts 45 is provided with multiple ducts, which are evenly spaced along the length of the mounting tube 43. The end of the air outlet duct 45 away from the mounting tube 43 is located inside the mounting shell 3 and suspended above the conveyor belt 23. The length direction of the air outlet duct 45 is perpendicular to the conveying direction of the conveyor belt 23. The air outlet duct 45 is inclined from the outside of the mounting shell 3 to the inside of the mounting shell 3 and can blow air onto the conveyor belt 23. The two sets of air outlet ducts 45 are symmetrically arranged with respect to the center line of the conveyor belt 23, and the lower end of the air outlet duct 45 is suspended above the conveyor belt 23. When the two sets of air blowers 42 blow air onto a piece of cardboard packaging at the same time, the hot air can be blown evenly onto the cardboard, and the two sets of air outlets 45 blow air at an angle, which can make the cardboard be stably placed in the groove formed by the two support plates 21 and the conveyor belt 23 and be conveyed and output.

[0048] Combination Figure 3 and Figure 5 The exhaust assembly 6 includes a first suction hood 61 disposed inside the mounting housing 3 and located at the open end, a second suction port disposed inside the mounting housing 3 and located at the closed end, a connecting pipe 63 disposed outside the mounting housing 3 and fixed at both ends to the first suction hood 61 and the second suction hood 62 respectively, and a suction fan 64 fixedly connected to and communicating with the middle part of the connecting pipe 63. The suction fan 64 is fixedly disposed on the top of the mounting housing 3.

[0049] Both the first suction hood 61 and the second suction hood 62 are square and have sloping openings at the bottom. The square shape of the outer walls of the suction hoods facilitates their fitting against the outer wall of the printing machine 1 and the inner wall of the closed end of the mounting frame, respectively. The opening of the first suction hood 61 is sloping towards the unloading end of the conveyor belt 23, and the opening of the first suction hood 61 is suspended above the discharge port 11 and below the lower end of the air outlet pipe. The opening of the second suction hood 62 is sloping towards the loading end of the conveyor belt 23, and the lower edge of the opening of the second suction hood 62 is flush with the upper edge of the notch 31.

[0050] Combination Figure 3 and Figure 5The filter assembly 7 includes a sealing cover 71 that covers the outside of the suction fan 64 and is fixed to the mounting housing 3; a filter box 72 that is inserted and installed inside the sealing cover 71; a connecting plate 73 with one side panel fixed to the outer wall of the filter box 72 and sealed to the sealing cover 71; a sealing gasket 74 that is bonded to the connecting plate 73 facing the entire surface of the filter box 72; an air supply pipe 75 that is fixed to and communicates with the sealing cover 71 at one end; and a water tank 76 that is fixed to the outer wall of the mounting housing 3 and has the other end of the air supply pipe 75 inserted therein.

[0051] The sealing cover 71 is a square cover with multiple equally spaced insertion holes on its same side wall along its height for inserting filter boxes 72. The length of the insertion holes is the same as the internal width of the sealing cover 71. After the filter boxes 72 are inserted into the insertion holes, the outer walls of the filter boxes 72 are in contact with the inner walls of the sealing cover 71. The bottom of the filter boxes 72 has several through holes, and the filter boxes 72 are filled with activated carbon to adsorb harmful gases that produce odors during the pigment drying process.

[0052] Reference Figure 5 The connecting plate 73 includes a sealing plate 731 fixed to the side wall of the filter box 72, two clamping plates 732 integrally formed and connected to both ends of the sealing plate 731, and a V-shaped snap-fit ​​plate 733 integrally bent and formed on a section of the clamping plate 732 away from the sealing plate 731. The V-shaped opening of the snap-fit ​​plate 733 faces away from the filter box 72.

[0053] The length of the sealing plate 731 is greater than the width of the side wall of the sealing cover 71, and the width of the sealing plate 731 is greater than the width of the insertion hole. The sealing gasket 74 and the filter box 72 are spaced apart, and the distance between the sealing gasket 74 and the filter box 72 is consistent with the thickness of the side wall of the sealing cover 71. After the filter box 72 is inserted into the insertion hole, the sealing gasket 74 on the sealing plate 731 can seal the outer wall of the sealing cover 71 around the insertion hole. At the same time, the sealing gasket 74 on the clamping plate 732 can increase the friction between the clamping plate 732 and the outer wall of the filter box 72, thereby improving the stability of the clamping plate 732 in holding the side wall of the sealing cover 71. Grooves for the snap-fit ​​plate 733 to be snapped into are respectively opened on opposite sides of the sealing cover 71. The snap-fit ​​plate 733 is snapped into the groove, and with the friction between the sealing gasket 74 and the filter box 72, the installation stability and sealing performance of the connecting plate 73 are further improved.

[0054] Reference Figure 2 The end of the gas supply pipe 75 away from the sealing cover 71 passes through the top of the water tank 76 and is fixedly connected to the water tank 76. The end of the gas supply pipe 75 inside the water tank 76 is suspended above the inner bottom of the water tank 76. A drain pipe 761 is fixedly installed on the outer bottom of the water tank 76, and a valve is installed on the drain pipe 761. An inclined exhaust pipe 77 is fixedly installed on the upper part of the side wall of the water tank 76. The upper end of the exhaust pipe 77 is connected to the water tank 76, which can both discharge the filtered harmful gases and inject water into the water tank 76.

[0055] In use, fill the water tank 76 with water and cover the end of the gas supply pipe 75. The gas adsorbed by the activated carbon is introduced into the water, and any residual substances in the gas are dissolved in the water. The gas is then discharged through the exhaust pipe 77. After a period of time, open the drain pipe 761 to drain the water and fill the water tank 76 with fresh water for easy operation.

[0056] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An environmentally friendly printing device for packaging paper boxes, characterized in that: The device includes a printing machine (1) with a discharge port (11) on one side, a conveyor (2) fixed to the printing machine (1) and with the feeding end conveying plane lower than the discharge port (11), a mounting shell (3) mounted on the conveyor (2) and fixed to the printing machine (1), an exhaust assembly (6) provided on the mounting shell (3), and a filter assembly (7) provided outside the mounting shell (3). The end of the mounting shell (3) away from the printing press (1) is a closed end and located above the material feeding end of the conveyor (2). The lower part of the closed end of the mounting shell (3) has a notch (31) that is consistent with the width of the conveying plane of the conveyor (2). The exhaust assembly (6) includes a first suction hood (61) and a second suction hood (62) disposed at both ends inside the mounting housing (3), a connecting pipe (63) disposed outside the mounting housing (3) and connected at both ends to the first suction hood (61) and the second suction hood (62) respectively, and a suction fan (64) connected to the middle of the connecting pipe (63). The filter assembly (7) includes a sealing cover (71) fixed to the mounting shell (3) and covering the outside of the suction fan (64), a filter box (72) inserted into the sealing cover (71) and containing activated carbon, a connecting plate (73) fixed to the outer wall of the filter box (72) and in the shape of a U, an air supply pipe (75) fixed at one end and connected to the sealing cover (71), and a water tank (76) connected to the other end of the air supply pipe (75). The end of the air supply pipe (75) away from the sealing cover (71) is located inside the water tank (76) and suspended at the bottom of the water tank (76). An exhaust pipe (77) is provided on the water tank (76).

2. The environmentally friendly printing device for packaging paper boxes according to claim 1, characterized in that: The sealing cover (71) has an insertion hole for inserting the filter box (72). After the filter box (72) is inserted into the insertion hole, its outer wall is in contact with the inner wall of the sealing cover (71). The connecting plate (73) includes a sealing plate (731) that is fixed to the outer wall of the filter box (72) and can close the insertion hole, a clamping plate (732) integrally formed with both ends of the sealing plate (731), and a snap-fit ​​plate (733) integrally bent on a section of the clamping plate (732) away from the sealing plate (731). The snap-fit ​​plate (733) can be snapped onto the outer wall of the sealing cover (71).

3. The environmentally friendly printing device for packaging paper boxes according to claim 2, characterized in that: A sealing gasket (74) is adhered to the surface of the connecting plate (73) facing the filter box (72).

4. The environmentally friendly printing device for packaging paper boxes according to claim 1, characterized in that: Both the first suction hood (61) and the second suction hood (62) are square.

5. The environmentally friendly printing device for packaging paper boxes according to claim 4, characterized in that: The lower end of the first suction hood (61) is open and tilted toward the closed end of the mounting shell (3), and the lower end of the second suction hood (62) is open and tilted toward the printing press (1).

6. The environmentally friendly printing device for packaging paper boxes according to any one of claims 1-5, characterized in that: The mounting housing (3) is also provided with a drying assembly (4), which includes a blower (41) mounted on the mounting housing (3), a mounting pipe (43) connected to the blower (41) and with both ends closed, a heating wire (44) disposed in the mounting pipe (43), and an air outlet pipe (45) fixedly installed on the outer wall of the mounting housing (3) and blowing air into the mounting housing (3).

7. The environmentally friendly printing device for packaging paper boxes according to claim 6, characterized in that: The air outlet pipe (45) is inclined and its lower end is suspended above the conveying plane of the conveyor (2).

8. The environmentally friendly printing device for packaging paper boxes according to claim 7, characterized in that: The mounting tube (43) is provided in two parts, and the two mounting tubes (43) are respectively provided on the two outer walls of the mounting shell (3) facing away from each other; Multiple air outlet pipes (45) are provided along the length of the outer wall of the installation pipe (43).

9. The environmentally friendly printing device for packaging paper boxes according to claim 1, characterized in that: An observation window (5) is provided on each of the two opposite side walls of the mounting housing (3) near the printing press (1).

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