Turnover device for packaging bag preparation and using method thereof

Abstract

The invention discloses a turnover device for packaging bag preparation and a using method thereof, and relates to the technical field of packaging bag preparation devices.The turnover device comprises a conveying device, a conveying device, two limiting boxes and a paper bag, a position adjusting box is jointly installed between the conveying device and the conveying device, and a turnover assembly is arranged in the position adjusting box. The paper bag turnover device has the beneficial effects that through cooperation of the turnover assembly, the driving assembly and the suspension assembly, non-contact type positioning conveying and turnover of paper bags can be achieved, the final printing effect of the paper bags can be guaranteed, in the process, blow-drying treatment can be conducted on the printed faces of the paper bags, and the printing efficiency of equipment on the paper bags can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging bag preparation devices, and particularly relates to a turnover device for packaging bag preparation and a using method thereof. Background Art

[0002] In the production process of paper packaging bags (such as handbags, etc.), a series of specific processes, methods, and operations are required to process various raw materials into packaging bags with specific functions, shapes, and specifications. Among them, in order to improve the appearance and recognition of the final finished paper packaging bags, printing treatment is usually required; Among them, in the later stage of the production process of some paper packaging bags, in order to meet the usage requirements of users, a double-sided printing machine is usually used to perform double-sided printing on them. After the single-sided printing of the paper packaging bag is completed, in order to improve the turnover efficiency, a turnover device is usually added to the printing machine. However, in the process of turning over the paper packaging bag by the existing turnover devices (such as vacuum adsorption devices, roller devices), physical contact and relative displacement usually occur with the printed surface of the paper packaging bag. If the friction generated by the relative displacement between the two is too large, it is easy to smear or scratch the printed surface of the paper packaging bag, reducing the final printing effect of the paper packaging bag. For this reason, we propose a turnover device for packaging bag preparation and a using method thereof to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems raised in the background art, and to propose a turnover device for packaging bag preparation and a using method thereof.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions: A turnover device for packaging bag preparation, including a conveying device, a conveying equipment, two limiting boxes, and a paper bag. A position adjustment box is jointly installed between the conveying device and the conveying equipment. A turnover component is arranged in the position adjustment box. A driving component is jointly arranged between the two limiting boxes. An adjusting component is jointly arranged between the two limiting boxes; The driving component includes placing grooves respectively opened on the two limiting boxes. Pipe bodies are fixedly installed on the two placing grooves. Swirl pipes evenly distributed linearly are fixedly communicated with the two pipe bodies. An air suction mechanism is jointly installed between the two limiting boxes; The adjusting component includes two limiting frames respectively slidably installed on the inner bottom walls of the two limiting boxes. A driving part is jointly installed between the limiting frames. A suspension component is jointly arranged between the limiting frames; The suspension component includes two air gathering cavities respectively opened on the limiting frames. A plurality of round holes are opened on the limiting frames, and the round holes are all communicated with the corresponding air gathering cavities. An air conveying mechanism is jointly installed between the two limiting boxes.

[0005] In the above-mentioned turnover device for preparing packaging bags, the air suction mechanism includes motors respectively and fixedly installed on the side walls of two limit boxes. A collecting air duct is fixedly communicated with each of the two pipe bodies. A rotating rod is fixedly installed on the driving end of each of the two motors, and the two rotating rods are hermetically penetrated and rotatably installed on the corresponding collecting air ducts. A turbo fan is fixedly installed on each of the two rotating rods, and an air supply component is commonly installed between the two collecting air ducts.

[0006] In the above-mentioned turnover device for preparing packaging bags, the air supply component includes boxes respectively and fixedly installed on the inner top walls of two limit boxes. A conduit is fixedly communicated with each of the two collecting air ducts, and the two conduits are hermetically penetrated and fixedly installed on the corresponding boxes. Two air delivery pipes are fixedly communicated with each of the two conduits, and a plurality of hole bodies are respectively opened at the lower ends of the two boxes; The hole bodies are all arranged with a narrow upper part and a wide lower part.

[0007] In the above-mentioned turnover device for preparing packaging bags, the driving component includes limit grooves respectively opened on two limit boxes. A reciprocating lead screw is rotatably installed on each of the two limit grooves. Two ball nuts are respectively installed in a matching manner on the two reciprocating lead screws. A slider is fixedly installed on one side of each ball nut, and the sliders are fixedly connected with the corresponding limit frames; A worm is penetrated and rotatably installed on each of the two limit boxes, and a worm gear meshing with the corresponding worm is fixedly installed on each of the two reciprocating lead screws.

[0008] In the above-mentioned turnover device for preparing packaging bags, the air delivery mechanism includes two groove bodies respectively opened on two limit boxes. An air guide pipe is fixedly installed on each of the groove bodies. A linear and uniformly distributed one-way air inlet pipe is fixedly communicated with each air guide pipe, and the one-way air inlet pipes all penetrate and are fixedly installed on the corresponding limit boxes. An elastic pipe is fixedly communicated with each air guide pipe, and one end of each elastic pipe penetrates and is fixedly installed on the corresponding limit box. A partition plate is fixedly installed in each elastic pipe for splitting the gas in the corresponding elastic pipe; Two air delivery pipes are fixedly communicated with each of the elastic pipes, and one end of each air delivery pipe is fixedly communicated with the corresponding air gathering cavity. An air extraction component is commonly installed between the air guide pipe and the two rotating rods.

[0009] In the above-mentioned turnover device for preparing packaging bags, the air extraction component includes round rods respectively and hermetically penetrated and rotatably installed on the air guide pipes. A linear and uniformly distributed two-way axial flow fan is fixedly installed on each round rod. Two driving wheels are fixedly installed on each of the two rotating rods. A driven wheel is fixedly installed on each round rod. A second conveyor belt is commonly sleeved and installed between the driving wheel and the driven wheel.

[0010] In the above-mentioned turnover device for preparing packaging bags, the turnover assembly includes a servo motor fixedly installed on the inner wall of the position adjustment box. The driving end of the servo motor is fixedly installed with a rotating shaft, and the other end of the rotating shaft is rotatably installed on the inner wall of the position adjustment box. A transmission rod is rotatably installed on the inner wall of the position adjustment box. Two rotating wheels are fixedly installed on both the rotating shaft and the transmission rod, and a conveyor belt one is commonly sleeved and installed between the corresponding two rotating wheels; Two chutes are opened on the position adjustment box. Two sliding blocks are fixedly installed on both conveyor belts one, and the sliding blocks are slidably installed on the corresponding chutes. Rotating shafts are rotatably installed on the sliding blocks, and the rotating shafts are fixedly connected to the corresponding limit boxes. A rotating component is commonly installed between the rotating shafts and the position adjustment box.

[0011] In the above-mentioned turnover device for preparing packaging bags, the rotating component includes rotating gears respectively fixedly installed on the rotating shafts. Two rack bars one are fixedly installed on the inner wall of the position adjustment box. Two rack bars two are fixedly installed on the inner wall of the position adjustment box, and both two rack bars one and two rack bars two are matched with the rotating gears.

[0012] A using method of a turnover device for preparing packaging bags, using the above-mentioned turnover device for preparing packaging bags, includes the following steps: S1: The staff first adjusts the distance between the corresponding two limit frames through the adjustment component according to the width of the paper bag to be printed, and then starts the conveying device to complete the single-sided printing of the paper bag and convey it to the left side of the position adjustment box; S2: When the paper bag moves to the left side of the position adjustment box, through the cooperation of the driving component and multiple swirl tubes, the paper bag can be stably sucked into the corresponding limit box. And during this process, through the air supply component, the drying process of the printed surface of the paper bag can be realized; S3: At the same time, when the paper bag is gradually sucked into the corresponding limit box, through the suspension component, the non-contact positioning of the paper bag can be realized, so that the paper bag is gradually sucked into the limit box in a suspended state, which helps to ensure the final printing effect on the surface of the paper bag; S4: After the paper bag completely enters the corresponding limit box, through the cooperation of the turnover component and the suspension component, the non-contact turnover of the paper bag can be realized. At the same time, when the paper bag is conveyed to the left side of the conveying device, through the cooperation of the driving component and the suspension component, the paper bag can be pushed above the conveying device in a suspended state. Then, by starting the conveying device, the printing process of the other side can be completed.

[0013] Compared with the existing technology, the advantages of the present invention are: 1: After the device finishes single-sided printing of the paper bag, through the cooperation of the driving component and the suspension component, non-contact positioning and transmission of the paper bag can be achieved. At the same time, through the cooperation of the flipping component and the suspension component, non-contact flipping of the paper bag can be realized, which helps to reduce the physical contact between the device and the paper bag and ensure the final printing effect of the paper bag.

[0014] 2: During the non-contact driving and transmission of the paper bag, through the cooperation of the driving component and the air supply component, drying treatment of the printed surface of the paper bag can be achieved, which helps to improve the overall printing efficiency of the paper bag. And through the cooperation of the corresponding multiple holes, it helps to improve the drying effect of the device on the overall printed surface of the paper bag, and further helps to improve the printing effect of the device on the paper bag to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is Figure 1 a schematic structural diagram of the position adjustment box in Figure 3 is Figure 2 a schematic sectional view of the position adjustment box; Figure 4 is Figure 2 a schematic sectional view of the position adjustment box after rotating a certain angle; Figure 5 is Figure 3 a schematic structural diagram of the internal components of the position adjustment box; Figure 6 is Figure 5 a schematic structural diagram of the rotating component in Figure 7 is Figure 6 a schematic sectional view of the limit box; Figure 8 is Figure 7 a schematic structural diagram of the driving component in Figure 9 is Figure 7 a schematic structural diagram of the air supply component in Figure 10 is Figure 7 a schematic structural diagram of the box body in Figure 11 is Figure 6 a schematic sectional view of the limit box after rotating a certain angle; Figure 12 is Figure 11 a schematic structural diagram of the internal components of the limit box; Figure 13 is Figure 12 a schematic structural diagram after rotating a certain angle; Figure 14 For Figure 12 Schematic cross-sectional view of the middle limit frame and the air duct Figure 15 For Figure 14 Schematic diagram of the structure of part A in

[0016] In the figure: 1. Conveyor equipment; 2. Conveying equipment; 3. Position adjustment box; 4. Flipping assembly; 41. Chute; 42. Rack bar one; 43. Rack bar two; 44. Servo motor; 45. Rotating shaft; 46. Transmission rod; 47. Conveyor belt one; 48. Sliding block; 49. Rotating shaft; 410. Rotating gear; 5. Limit box; 6. Driving assembly; 61. Motor; 62. Rotating rod; 63. Air collecting pipe; 64. Turbine fan; 65. Pipe body; 66. Swirl pipe; 67. Duct; 68. Air delivery pipe; 69. Box body; 610. Hole body; 7. Adjusting assembly; 71. Worm; 72. Reciprocating lead screw; 73. Worm gear; 74. Slide block; 75. Limit frame; 8. Suspension assembly; 81. Air duct; 82. Round rod; 83. Conveyor belt two; 84. Unidirectional air inlet pipe; 85. Bidirectional axial flow fan; 86. Air supply pipe; 87. Air gathering cavity; 88. Round hole; 89. Elastic pipe; 810. Partition board; 9. Paper bag. Specific implementation mode

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0018] Refer to Figures 1 - 15 , a flipping device for preparing packaging bags, including a conveyor device 1, a conveying device 2, two limit boxes 5, and a paper bag 9. A position adjustment box 3 is jointly installed between the conveyor device 1 and the conveying device 2. A flipping assembly 4 is arranged in the position adjustment box 3. A driving assembly 6 is jointly arranged between the two limit boxes 5. An adjusting assembly 7 is jointly arranged between the two limit boxes 5.

[0019] It is set that during the operation of the conveyor device 1 and the conveying device 2, the paper bag 9 placed thereon can be conveyed from left to right (in the direction shown in Figure 1 ), and at the same time, through the cooperation of the two, single-sided printing of the paper bag 9 can be completed in sequence. Its working principle is similar to that of the existing "paper bag double-sided printing machine", and no further elaboration will be made here.

[0020] Reference Figures 1 - 3 、 Figures 6 - 11 As shown in Figures 6 - 11 , the driving assembly 6 includes placing grooves (drawn but not labeled in the figure) respectively formed on two limiting boxes 5. Figure 11 As can be seen from Figures 6 - 11 , pipe bodies 65 are fixedly installed on both of the two placing grooves, and swirling pipes 66 linearly and evenly distributed are fixedly communicated with both of the two pipe bodies 65. An air suction mechanism is commonly installed between the two limiting boxes 5.

[0021] The air suction mechanism includes motors 61 respectively fixedly installed on the side walls of the two limiting boxes 5. Collecting air ducts 63 are fixedly communicated with both of the two pipe bodies 65. Rotating rods 62 are fixedly installed on the driving ends of the two motors 61, and both of the two rotating rods 62 are hermetically penetrated and rotatably installed on the corresponding collecting air ducts 63. Turbine fans 64 are fixedly installed on both of the two rotating rods 62. A air delivery component is commonly installed between the two collecting air ducts 63.

[0022] One-way valves I (not drawn in the figure) are installed at the joints of the two collecting air ducts 63 and the corresponding pipe bodies 65, and one-way valves II (not drawn in the figure) are installed at the joints of the two collecting air ducts 63 and the corresponding ducts 67. When the one-way valve I inside the pipe body 65 is opened, only gas is allowed to flow from the pipe body 65 into the corresponding collecting air duct 63 at this time. Meanwhile, when the one-way valve II inside the duct 67 is opened, only gas is allowed to flow from the duct 67 into the corresponding collecting air duct 63.

[0023] When the conveying device 1 operates to complete single-sided printing of the paper bags 9 thereon (as shown in the direction of Figure 3 , the printed side of the paper bag 9 is located at its upper end) and conveys them to the left side of the position adjustment box 3, first, according to the width of the paper bag 9, the distance between the corresponding two limiting frames 75 is adjusted through the adjusting assembly 7, which can help improve the subsequent driving and non-contact positioning effects of the device on the paper bag 9. Then, the left motor 61 is started, the one-way valve I inside the corresponding pipe body 65 is opened, and the one-way valve II inside the duct 67 is closed. At this time, when the left motor 61 operates and drives the turbine fan 64 to rotate and suck air through the corresponding rotating rod 62, the outside gas will be sucked into the corresponding collecting air duct 63 through the cooperation of the pipe body 65 and multiple swirling pipes 66. During this process, the suction force generated by the multiple swirling pipes 66 on the left paper bag 9 (as shown in the direction of Figure 7 ) can gradually suck the paper bag 9 into the corresponding limiting box 5. Figure 3 shown in the direction, the printed side of the paper bag 9 is located at its upper end), and conveys them to the left side of the position adjustment box 3, first, according to the width of the paper bag 9, the distance between the corresponding two limiting frames 75 is adjusted through the adjusting assembly 7, which can help improve the subsequent driving and non-contact positioning effects of the device on the paper bag 9. Then, the left motor 61 is started, and the one-way valve I inside the corresponding pipe body 65 is opened, and the one-way valve II inside the duct 67 is closed. At this time, when the left motor 61 operates and drives the turbine fan 64 to rotate and suck air through the corresponding rotating rod 62, the outside gas will be sucked into the corresponding collecting air duct 63 through the cooperation of the pipe body 65 and multiple swirling pipes 66. During this process, the suction force generated by the multiple swirling pipes 66 on the left paper bag 9 (as shown in the direction of Figure 7 ) can gradually suck the paper bag 9 into the corresponding limiting box 5. Figure 7 shown in the direction) can gradually suck the paper bag 9 into the corresponding limiting box 5.

[0024] At the same time, both the left and right ends of the multiple swirling pipes 66 (as shown in Figure 10 Figure 10The tangential inlets are adopted in all directions (as shown in the indicated direction), so as to ensure that when the turbo fan 64 rotates forward and backward subsequently, and the left or right end of the cyclone tube 66 intakes air, since the inlet direction is tangent to the circumference of the cyclone tube 66, the gas has a tangential velocity around the central axis of the cyclone tube 66, and the gas can enter the interior of the cyclone tube 66 at a certain angle, which helps to promote the formation of a swirling air flow for this part of the gas.

[0025] The swirling air flow formed by the cooperation of multiple cyclone tubes 66 usually has a centripetal force. When the left motor 61 operates and sucks the paper bag 9 into the interior of the left limit box 5 and between the two limit frames 75 through the cooperation of multiple cyclone tubes 66, this centripetal force can act like an invisible "stabilizing ring" to confine the paper bag 9 in the vicinity of the center of the swirl. In this way, it can effectively reduce the situation that the paper bag 9 sways left and right during the process of gradually moving into the interior of the left limit box 5 due to unstable air flow, which helps to improve the stability of the paper bag 9 during the force-displacement process, reduce the occurrence of contact and friction between the paper bag 9 and the left limit box 5 and the corresponding two limit frames 75, that is, reduce the wear of the equipment on the paper bag 9 during the transmission process, can improve the final printing effect of the equipment on the paper bag 9 to a certain extent, and at the same time, the formed swirling air flow can also effectively buffer the interference of the external air flow on the movement of the paper bag 9 and reduce the impact of other air flows on the paper bag 9, which helps to further ensure the stability of the paper bag 9 during the displacement process.

[0026] At the same time, the purpose of arranging multiple cyclone tubes 66 linearly and uniformly on the pipe body 65 is that when the left motor 61 operates and sucks the paper bag 9 into the corresponding limit box 5 through the cooperation of the corresponding pipe body 65 and the cyclone tubes 66 (as Figure 11 shown), the swirling air flow formed by the cooperation of the corresponding multiple cyclone tubes 66 and distributed linearly and uniformly can help to further improve the stability of the overall force-displacement of the paper bag 9 and reduce the occurrence of swaying or position deviation due to unstable local air flow of the paper bag 9.

[0027] Referring to Figure 1 、 Figure 2 、 Figures 5 - 11 The air supply component includes box bodies 69 respectively fixedly installed on the inner top walls of the two limit boxes 5. Two air collecting pipes 63 are fixedly communicated with conduits 67, and both conduits 67 are hermetically penetrated and fixedly installed on the corresponding box bodies 69. Two conduits 67 are fixedly communicated with two air delivery pipes 68, and a plurality of hole bodies 610 are opened at the lower ends of the two box bodies 69, and the hole bodies 610 are all arranged with a narrow upper part and a wide lower part.

[0028] When the left motor 61 operates (as Figure 5In the direction shown, during the process of gradually sucking the paper bag 9 into the corresponding limiting box 5 through the cooperation of multiple cyclone tubes 66, the gas sucked in by the cooperation of the multiple cyclone tubes 66 at this time will enter the interior of the corresponding conduit 67 along the corresponding pipe body 65 and air collecting pipe 63 (at this time, the check valve two inside the conduit 67 is in the closed state), and finally, through the cooperation of the conduit 67 and the corresponding two air ducts 68, it is input into the interior of the corresponding box body 69, and the gas entering the interior of the box body 69 will finally be blown towards the upper end of the paper bag 9, that is, the paper bag 9 with the printed surface (such as Figure 10 In the direction shown), in this way, the blowing and drying treatment of the printed surface at the upper end of the paper bag 9 can be realized (during the printing process of the paper bag 9, water-based inks, solvent-based inks, etc. are usually used), which can help to improve the drying speed of the printed surface at the upper end of the paper bag 9, and avoid the situation that the printed surface of the paper bag 9 is smeared by the conveying device 2 after being flipped and conveyed to the upper end of the conveying device 2 through the cooperation of the flipping assembly 4 and the driving assembly 6, which is helpful to improve the final printing effect of the paper bag 9.

[0029] At the same time, through the cooperation of the conduit 67 and the corresponding two air ducts 68, it can help to improve the uniformity of air delivery to the interior of the corresponding box body 69, that is, the overall blowing and drying effect of the box body 69 blowing air towards the printed surface at the upper end of the paper bag 9 through the multiple hole bodies 610, and it can be seen from Figure 10 that the multiple hole bodies 610 are all arranged with a narrow upper part and a wide lower part (as can be seen from Figure 10 ), when the gas inside the box body 69 is blown towards the upper end of the paper bag 9 through the corresponding multiple hole bodies 610, since the upper end of the hole body 610 is relatively narrow, the gas inside the box body 69 will accelerate through the hole body 610 at this time. At this time, according to the principle of fluid mechanics, the faster the flow rate, the smaller the pressure. When the gas flows through the wider lower part of the corresponding hole body 610, the gas flow in this part will form a jet state, which can help to increase the flow rate of the air flow ejected from the box body 69 through the multiple hole bodies 610, improve the drying speed of the printed surface at the upper end of the paper bag 9. At the same time, when the high-speed air flow is blown out from the multiple hole bodies 610, a negative pressure area will be formed in the surrounding area. According to Bernoulli's principle, the surrounding air will be induced to be involved and mixed with the blown air flow, that is, it helps to increase the air flow volume around the printed surface of the paper bag 9, and while improving the drying efficiency of the printed surface of the paper bag 9, it also helps to further improve the overall blowing and drying effect of the printed surface of the paper bag 9.

[0030] Referring to Figure 6 、 Figures 11 - 15 , the adjusting assembly 7 includes two limiting frames 75 respectively slidably installed on the inner bottom walls of the two limiting boxes 5. A driving component is commonly installed between the limiting frames 75, and a suspension assembly 8 is commonly arranged between the limiting frames 75.

[0031] The suspension assembly 8 includes two air gathering cavities 87 respectively formed on the limiting frame 75. A plurality of round holes 88 are formed on the limiting frame 75, and the round holes 88 are all communicated with the corresponding air gathering cavities 87. An air conveying mechanism is commonly installed between the two limiting boxes 5.

[0032] The air conveying mechanism includes two slots respectively formed on the two limiting boxes 5. Air guide pipes 81 are fixedly installed on the slots. Linearly and evenly distributed one-way air inlet pipes 84 are fixedly communicated with the air guide pipes 81, and the one-way air inlet pipes 84 all penetrate through and are fixedly installed on the corresponding limiting boxes 5. Elastic pipes 89 are fixedly communicated with the air guide pipes 81, and one ends of the elastic pipes 89 all penetrate through and are fixedly installed on the corresponding limiting boxes 5. Partition plates 810 are fixedly installed in the elastic pipes 89 for diverting the gas in the corresponding elastic pipes 89. Two air supply pipes 86 are fixedly communicated with the elastic pipes 89, and one ends of the air supply pipes 86 are fixedly communicated with the corresponding air gathering cavities 87. An air extraction component is commonly installed between the air guide pipes 81 and the two rotating rods 62.

[0033] The air extraction component includes round rods 82 respectively and hermetically penetrating through and rotatably installed on the air guide pipes 81. Linearly and evenly distributed two-way axial flow fans 85 are fixedly installed on the round rods 82. Two driving wheels are fixedly installed on the two rotating rods 62. Driven wheels are fixedly installed on the round rods 82. Transmission belts two 83 are commonly sleeved and installed between the driving wheels and the driven wheels.

[0034] During the process that the left motor 61 operates and sucks the paper bag 9 to the middle position between the corresponding limiting box 5 and the two limiting frames 75, through the cooperation of the corresponding rotating rods 62 and the two transmission belts two 83, the corresponding two round rods 82 can be driven to drive the corresponding multiple two-way axial flow fans 85 to rotate and suck air. During the process that the corresponding multiple two-way axial flow fans 85 rotate and suck air, the outside air can be sucked into the corresponding air guide pipes 81 through the corresponding one-way air inlet pipes 84. This part flows along the air guide pipes 81 and the corresponding elastic pipes 89 (the elastic pipes 89 are set as one-way pipes, that is, only allowing the gas inside the air guide pipes 81 to flow towards the corresponding elastic pipes 89) and the two air supply pipes 86, enters into the corresponding two air gathering cavities 87, and is finally blown out by the corresponding multiple round holes 88.

[0035] At the same time, combined with Figure 13 and Figure 14 it can be seen that the gas blown out from the multiple round holes 88 at the lower ends on the left and right sides can generate an upward lifting force on the left and right sides of the paper bag 9 above it, so that the paper bag 9 moves from the left to the right under the force (as shown in the direction in Figure 7 ). When entering the corresponding limiting box 5, by blowing air at the lower ends of the corresponding two limiting frames 75, an upward lifting force is generated on the left and right sides of the paper bag 9 (as shown in Figure 12in the shown direction), so that the paper bag 9 is suspended at the middle position between the two limit frames 75 and the corresponding limit box 5, which can effectively avoid physical contact between the device and the paper bag 9, and reduce the smudging and scratching of the printed surface of the paper bag 9 due to friction caused by relative displacement during the contact process between the paper bag 9 and the device.

[0036] At the same time, combined with Figure 13 and Figure 14 it can be seen that the gas blown out from the multiple round holes 88 at the upper ends on the left and right sides can limit the left and right sides of the paper bag 9 below it, ensuring that during the process of driving the paper bag 9 to move in cooperation with the corresponding pipe body 65 and the multiple swirl pipes 66, the paper bag 9 can always move in a suspended state, which can help to further reduce the occurrence of contact between the paper bag 9 and the limit box 5.

[0037] At the same time, it can be seen from Figure 14 that partition plates 810 are provided inside the multiple elastic tubes 89. Through the setting of the partition plates 810, the effect of separately guiding the gas entering the elastic tubes 89 can be achieved. Since the gas ejected from the lower ends of the corresponding two limit frames 75 not only needs to overcome the weight of the paper bag 9, but also needs to blow the paper bag 9 upward to the middle position between the corresponding two limit frames 75, so the gas required by the corresponding two limit frames 75 and the gas blown out from the upper ends of the corresponding two limit frames 75 only needs to limit the upward movement of the paper bag 9. Therefore, the amount of gas required to be blown out from the lower ends of the corresponding two limit frames 75 is greater than that of their upper ends. And through the setting of the partition plates 810 inside the elastic tubes 89, most of the gas inside the elastic tubes 89 can flow into the lower air supply pipe 86 and be blown out from the multiple round holes 88 below, and a small part of the gas enters the upper air supply pipe 86 and is blown out from the multiple round holes 88 above, which can effectively ensure the stability of the cooperation between the corresponding two limit frames 75 and the air delivery mechanism to suspend the paper bag 9 at the middle position between the two limit frames 75 (the size of the operating power of the motor 61 needs to be selected by the user according to the overall weight of the paper bag 9 to be printed, that is, the displacement of the paper bag 9 driven in cooperation with the multiple swirl pipes 66, and the amount of gas required for the cooperation between the two limit frames 75 and the air delivery mechanism to suspend the paper bag 9 at the middle position between the two limit frames 75 needs to match the weight of the paper bag 9 to be printed).

[0038] During the double-sided printing process of a paper packaging bag (i.e., paper bag 9) by an existing double-sided printing device, after one side of the paper packaging bag is printed, an existing flipping device is used to turn it over so as to facilitate the subsequent printing process of the other side. Existing flipping devices such as vacuum adsorption devices and roller devices will have physical contact with the paper packaging bag during the process of flipping the paper packaging bag after single-sided printing. When the paper packaging bag comes into contact with and separates from the existing flipping device, it is easy to cause friction due to the relative displacement between the two, smudging the printed surface of the paper packaging bag and reducing the final printing effect of the paper packaging bag. Although some existing printing devices, after one side of the paper packaging bag is printed, usually add a drying device on the side of the flipping device to dry the printed surface of the paper packaging bag in order to reduce the smudging of the printed surface of the paper packaging bag by the existing flipping device, it is also easy to have the situation where the printed surface of the paper packaging bag is scratched and smudged due to the contact and relative displacement between the two during the flipping process of the flipping device on the paper packaging bag. Therefore, by means of non-contact transmission and flipping of the printed paper bag 9, it can help improve the final printing effect of the paper bag 9.

[0039] Refer to Figure 7 、 Figure 12 As shown in the figure (the limiting grooves are drawn but not labeled on the two limiting boxes 5 respectively, and can be seen from Figure 7 ), there are limiting grooves on the two limiting boxes 5 respectively. Two reciprocating lead screws 72 are rotatably installed on the two limiting grooves. Two ball nuts are fitted on the two reciprocating lead screws 72 respectively. A slider 74 is fixedly installed on one side of each ball nut, and the slider 74 is fixedly connected to the corresponding limiting frame 75. Two worm shafts 71 penetrate and are rotatably installed on the two limiting boxes 5 respectively. A worm wheel 73 meshing with the corresponding worm shaft 71 is fixedly installed on each of the two reciprocating lead screws 72.

[0040] Before using this device to print the paper bag 9, the distance between the two corresponding limiting frames 75 can be adjusted according to the width of the paper bag 9 (as shown in Figure 12 the direction, the distance from the left side to the right side of the paper bag 9 is the width). For example, when the width of the paper bag 9 is relatively narrow and the distance between the two corresponding limiting frames 75 needs to be shortened, the staff can rotate the worm shaft 71, and through the cooperation of the worm shaft 71 with the corresponding worm wheel 73 and the reciprocating lead screw 72, drive the two corresponding sliders 74 to drive the corresponding limiting frames 75 to approach each other until the distance between the two corresponding limiting frames 75 is adjusted to a suitable position. On the contrary, reversing the worm shaft 71 can drive the two limiting frames 75 to move away from each other. In this way, the effect of adjusting the distance between the two corresponding limiting frames 75 according to the width of the paper bag 9 can be achieved, which helps to improve the non-contact positioning transmission and subsequent flipping effect of the device on paper bags 9 of different sizes, and helps to improve the universality of the use range of this device.

[0041] Meanwhile, during the process that the limiting frame 75 moves closer to or away from the side wall of the corresponding limiting box 5 under force, due to the self-elasticity of the corresponding elastic tube 89, the limiting frame 75 can stretch or compress the corresponding elastic tube 89 under force (as shown in the direction at Figure 15 here, specifically referring to stretching or compressing the left side of the elastic tube 89), during this process, the smoothness of the air supply of the corresponding two air supply pipes 86 by the elastic tube 89 is ensured.

[0042] Referring to Figures 1 - 7 , the flipping assembly 4 includes a servo motor 44 fixedly installed on the inner wall of the adjustment box 3. The driving end of the servo motor 44 is fixedly installed with a rotating shaft 45, and the other end of the rotating shaft 45 is rotatably installed on the inner wall of the adjustment box 3. A transmission rod 46 is rotatably installed on the inner wall of the adjustment box 3. Two rotating wheels are fixedly installed on both the rotating shaft 45 and the transmission rod 46. A first conveyor belt 47 is commonly sleeved and installed between the corresponding two rotating wheels. Two sliding grooves 41 are formed on the adjustment box 3. Two sliding blocks 48 are fixedly installed on both the first conveyor belts 47, and the sliding blocks 48 are slidably installed in the corresponding sliding grooves 41. A rotating shaft 49 is rotatably installed on each of the sliding blocks 48, and the rotating shafts 49 are fixedly connected to the corresponding limiting boxes 5. A rotating component is commonly installed between the rotating shafts 49 and the adjustment box 3.

[0043] The rotating component includes rotating gears 410 respectively fixedly installed on the rotating shafts 49. Two first rack bars 42 are fixedly installed on the inner wall of the adjustment box 3. Two second rack bars 43 are fixedly installed on the inner wall of the adjustment box 3, and both the two first rack bars 42 and the two second rack bars 43 cooperate with the rotating gears 410.

[0044] When the paper bag 9 is sucked into the left limiting box 5 in a suspended state through the cooperation of the above-mentioned driving assembly 6 and the suspension assembly 8 (as shown in the state at Figure 2 ), start the servo motor 44. The operation of the servo motor 44 will drive the left limiting box 5 to continuously move to the right (as shown in the direction at Figure 6 ) through the cooperation of the rotating shaft 45, the transmission rod 46, and the two first conveyor belts 47. When the two rotating gears 410 on the left limiting box 5 are engaged with the corresponding first rack bars 42 and continue to move to the right, at this time, the two first rack bars 42 will apply a leftward driving force to the corresponding rotating gears 410, so that the corresponding two rotating gears 410 cooperate to drive the corresponding limiting box 5 to rotate clockwise (as shown in the direction at Figure 6 ) with the corresponding two rotating shafts 49 as the axes.

[0045] Meanwhile, during the process in which the upper limiting box 5 is subjected to force and rotates clockwise, the motor 61 needs to be reversely started, the first one-way valve inside the corresponding pipe body 65 is closed, and the second one-way valve inside the corresponding conduit 67 is opened. At this time, the operation of the motor 61 can, through the cooperation of the corresponding conduit 67, two air ducts 68, the box body 69 and multiple holes 610 thereon, suck the external gas into the collecting air duct 63 and finally eject it from multiple swirl tubes 66. At this time, the thrust generated by the gas ejected from multiple swirl tubes 66 on the paper bag 9 can effectively prevent the paper bag 9 from falling downward under the influence of its own gravity and coming into contact with the side wall of the limiting box 5 during the process of rotating clockwise with the corresponding limiting box 5.

[0046] Meanwhile, two rotating gears 410 located above are set to cooperate with two first rack bars 42 to drive the upper limiting box 5 to rotate clockwise with a relatively fast speed under force, so as to ensure that when the motor 61 is operating at this time, it will not drive the paper bag 9 to generate a large displacement through cooperation with the air suction mechanism.

[0047] When the upper limiting box 5 is subjected to force and rotates clockwise by 180 degrees and stops rotating, and is conveyed to the left side of the right end of the conveying device 2 through the continuous operation of the servo motor 44 (as shown in the Figure 2 indicated direction), the operation of the servo motor 44 needs to be stopped first. At this time, through the continuous operation of the upper motor 61 (as shown in the Figure 6 indicated direction), air flow can be ejected through the cooperation of multiple corresponding swirl tubes 66 to generate a rightward thrust on the paper bag 9 and drive the paper bag 9 to move to the right (as shown in the Figure 2 indicated direction) to the left end of the conveying device 2. Then, by starting the conveying device 2, continuous transportation of the paper bag 9 can be realized and printing processing of the other side of the paper bag 9 can be completed.

[0048] Meanwhile, multiple cross-flow fans 85 are all designed with a completely symmetric airfoil (such as NACA symmetric airfoil). When the motor 61 rotates forward and reversely under force and drives multiple cross-flow fans 85 to rotate forward and reversely together through the corresponding round rod 82, the aerodynamic characteristics of the blades thereon can be kept consistent, so as to ensure the symmetry of the air flow direction and efficiency when the blades rotate forward and reversely, that is, no matter whether the cross-flow fans 85 rotate forward or reversely under force, the blades thereon can cooperate to form a negative pressure at the air inlet of the corresponding one-way air inlet pipe 84 and realize the air suction effect of the corresponding one-way air inlet pipe 84.

[0049] When the motor 61 rotates in reverse, during the process of pushing the paper bag 9 inside the corresponding limit box 5 outward by cooperating with the corresponding air suction mechanism, at this time, through the cooperation of the corresponding rotating rod 62 and the two round rods 82, it will drive the corresponding multiple two-way axial flow fans 85 to rotate in reverse. At this time, through the above principle, it can ensure the stability of the air supply to the middle position of the corresponding limit frame 75 by the cooperation of the corresponding multiple one-way air inlet pipes 84, air guide pipes 81, elastic pipes 89 and the two air supply pipes 86. That is, when the paper bag 9 is pushed out of the corresponding limit box 5 under force, the stability of its suspended state can be ensured, which can help to further ensure the final printing effect of the paper bag 9.

[0050] At the same time, when the paper bag 9 inside the upper limit box 5 is completely pushed out, the servo motor 44 is started again. At this time, the continuous operation of the servo motor 44 will drive the limit box 5 to move back to its original position in a way similar to clockwise rotation (as Figure 6 shown in the direction). And during this process, when the two rotating gears 410 on the limit box 5 mesh with the corresponding rack bar two 43 and continue to move to the left, at this time, the two rack bar two 43 apply a driving force to the right to the corresponding rotating gear two 410, which can drive the limit box 5 to rotate and reset around the corresponding rotating shaft 49, so as to facilitate the subsequent continuous non-contact positioning and flipping of the limit box 5 for the paper bag 9.

[0051] At the same time, combined with Figure 5 and Figure 6 it can be seen that there are two limit boxes 5 arranged between the two conveyor belts one 47. Through the coordinated operation of the two limit boxes 5, it can help to improve the continuity and efficiency of the non-contact positioning, transmission and flipping of the paper bag 9 by this device. At the same time, the two rack bar one 42 and the two rack bar two 43 are arranged in a staggered manner to avoid the situation of collision with the other when the upper limit box 5 or the lower limit box 5 is forced to flip.

[0052] Further explanation, the above fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0053] Referring to Figures 1 - 15 , a method for using a flipping device for preparing a packaging bag includes the following steps: S1: The staff first adjusts the distance between the corresponding two limit frames 75 according to the width of the paper bag 9 to be printed through the adjusting component 7, and then starts the conveying device 1 to complete the single-sided printing of the paper bag 9 and convey it to the left side of the positioning box 3; S2: When the paper bag 9 moves to the left side of the position adjustment box 3, through the cooperation of the driving component 6 and multiple cyclone tubes 66, the paper bag 9 can be stably sucked into the corresponding limiting box 5. And during this process, through the air supply component, the drying treatment of the printed surface of the paper bag 9 can be realized; S3: At the same time, when the paper bag 9 is gradually sucked into the corresponding limiting box 5, through the suspension component 8, the non-contact positioning of the paper bag 9 can be realized, so that the paper bag 9 is gradually sucked into the limiting box 5 in a suspended state, which helps to ensure the final printing effect on the surface of the paper bag 9; S4: After the paper bag 9 completely enters the corresponding limiting box 5, through the cooperation of the flipping component 4 and the suspension component 8, the non-contact flipping of the paper bag 9 can be realized. At the same time, when the paper bag 9 is conveyed to the left side of the conveying device 2, through the cooperation of the driving component 6 and the suspension component 8, the paper bag 9 can be pushed above the conveying device 2 in a suspended state. Then, by starting the conveying device 2, the printing treatment of the other side can be completed.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A turnover device for preparing packaging bags, comprising a conveying device (1), a conveying device (2), two limit boxes (5), and a paper bag (9), wherein a position adjustment box (3) is installed between the conveying device (1) and the conveying device (2), and characterized in that: A turning assembly (4) is arranged in the position adjustment box (3), a driving assembly (6) is arranged between the two limit boxes (5), and an adjusting assembly (7) is arranged between the two limit boxes (5); The driving assembly (6) comprises placement grooves respectively provided on the two limit boxes (5), the two placement grooves are fixedly mounted with a tube body (65), the two tube bodies (65) are fixedly connected with swirl tubes (66) evenly distributed in a linear shape, and an air suction mechanism is installed between the two limit boxes (5); The adjustment component (7) comprises two limit frames (75) respectively slidably mounted on the inner bottom walls of the two limit boxes (5), a driving component is commonly mounted between the limit frames (75), and a suspension component (8) is commonly arranged between the limit frames (75); The suspension assembly (8) comprises two air gathering cavities (87) respectively opened on the limit frames (75), the limit frames (75) are each provided with a plurality of circular holes (88), and the circular holes (88) are each connected to the corresponding air gathering cavities (87), and an air transmission mechanism is installed between the two limit boxes (5).

2. A turning device for preparing packaging bags according to claim 1, characterized in that: The air suction mechanism comprises motors (61) respectively fixedly mounted on the side walls of the two limit boxes (5); the two tube bodies (65) are fixedly connected to the air collecting pipe (63); the driving ends of the two motors (61) are fixedly mounted with rotating rods (62); the two rotating rods (62) are sealed and penetrated and rotatably mounted on the corresponding air collecting pipe (63); the two rotating rods (62) are fixedly mounted with turbo fans (64); and an air supply component is installed between the two air collecting pipes (63).

3. A turnover device for preparing packaging bags according to claim 2, characterized in that: The air supply component comprises box bodies (69) respectively fixedly mounted on the inner top walls of the two limit boxes (5); the two air collecting pipes (63) are both fixedly connected to a duct (67); the two ducts (67) are both sealed and penetrate and are fixedly mounted on the corresponding box bodies (69); the two ducts (67) are both fixedly connected to two air supply pipes (68); and the lower ends of the two box bodies (69) are each provided with a plurality of holes (610); The holes (610) are all narrow at the top and wide at the bottom.

4. A turnover device for preparing packaging bags according to claim 3, characterized in that: The driving component comprises limiting grooves respectively provided on two limiting boxes (5), reciprocating screw rods (72) being rotatably mounted on the two limiting grooves, two ball nuts being matched and mounted on the two reciprocating screw rods (72), a slider (74) being fixedly mounted on one side of the ball nut, and the sliders (74) being fixedly connected to corresponding limiting frames (75); A worm (71) is penetrated and rotatably mounted on each of the two limit boxes (5), and a worm wheel (73) meshing with the corresponding worm (71) is fixedly mounted on each of the two reciprocating screws (72).

5. A turnover device for preparing packaging bags according to claim 4, characterized in that: The gas delivery mechanism comprises two trough bodies respectively provided on two limit boxes (5), each of the trough bodies being fixedly mounted with an air guide pipe (81), each of the air guide pipes (81) being fixedly connected with a linearly evenly distributed one-way air inlet pipe (84), and each of the one-way air inlet pipes (84) passing through and fixedly mounted on the corresponding limit box (5), each of the air guide pipes (81) being fixedly connected with an elastic pipe (89), and each of one ends of the elastic pipes (89) passing through and fixedly mounted on the corresponding limit box (5), and each of the elastic pipes (89) being fixedly mounted with a partition plate (810) for diverting the gas in the corresponding elastic pipe (89); The elastic tube (89) is fixedly connected to two air supply pipes (86), and one end of the air supply pipe (86) is fixedly connected to a corresponding air collecting chamber (87). An air extraction component is installed between the air guide pipe (81) and the two rotating rods (62).

6. A turnover device for preparing packaging bags according to claim 5, characterized in that: The air extraction components comprise round rods (82) which are respectively sealed and penetrated and rotatably mounted on the air guide pipe (81); the round rods (82) are each fixedly mounted with a bidirectional axial flow fan (85) which is evenly distributed in a linear shape; two driving wheels are each fixedly mounted on the two rotating rods (62); a driven wheel is each fixedly mounted on the round rods (82); and a second conveyor belt (83) is mounted between the driving wheel and the driven wheel.

7. A turnover device for preparing packaging bags according to claim 6, characterized in that: The flip assembly (4) comprises a servo motor (44) fixedly mounted on the inner wall of the position adjustment box (3); a rotating shaft (45) is fixedly mounted on the driving end of the servo motor (44); the other end of the rotating shaft (45) is rotatably mounted on the inner wall of the position adjustment box (3); a transmission rod (46) is rotatably mounted on the inner wall of the position adjustment box (3); two rotating wheels are fixedly mounted on the rotating shaft (45) and the transmission rod (46); and a conveyor belt (47) is mounted between the two rotating wheels; The adjustment box (3) is provided with two slide grooves (41), and two sliding blocks (48) are fixedly installed on the two conveyor belts (47), and the sliding blocks (48) are slidably installed on the corresponding slide grooves (41). The sliding blocks (48) are rotatably installed with a rotating shaft (49), and the rotating shaft (49) is fixedly connected to the corresponding limit box (5), and a rotating component is installed between the rotating shaft (49) and the adjustment box (3).

8. A turnover device for preparing packaging bags according to claim 7, characterized in that: The rotating components include rotating gears (410) respectively fixedly mounted on the rotating shafts (49); two rack rods (42) are fixedly mounted on the inner wall of the positioning box (3); two rack rods (43) are fixedly mounted on the inner wall of the positioning box (3); and the two rack rods (42) and the two rack rods (43) are both matched with the rotating gears (410).

9. A method for using a turnover device for preparing a packaging bag, using the turnover device for preparing a packaging bag as claimed in claim 8, characterized in that: The following steps are involved: S1: The staff first adjusts the distance between the two corresponding limit frames (75) by adjusting the assembly (7) according to the width of the paper bag (9) to be printed, and then starts the conveying device (1) to complete the single-sided printing of the paper bag (9) and convey it to the left side of the position adjustment box (3); S2: When the paper bag (9) moves to the left side of the position adjustment box (3), the driving assembly (6) cooperates with the plurality of cyclone tubes (66) to stably suck the paper bag (9) into the corresponding position limiting box (5), and in this process, the printed surface of the paper bag (9) can be dried by the air supply component; S3: When the paper bag (9) is gradually sucked into the corresponding limiting box (5), the suspension component (8) can realize non-contact positioning of the paper bag (9), so that the paper bag (9) is gradually sucked into the limiting box (5) in a suspended state, thereby helping to ensure the final printing effect on the surface of the paper bag (9); S4: After the paper bag (9) has completely entered the corresponding limit box (5), the paper bag (9) can be turned over in a non-contact manner by the cooperation of the turning component (4) and the suspension component (8). At the same time, when the paper bag (9) is conveyed to the left side of the conveying device (2), the driving component (6) and the suspension component (8) can be cooperated to push the paper bag (9) to the top of the conveying device (2) in a suspended state. Then, by starting the conveying device (2), the printing process on the other side of the paper bag (9) can be completed.

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