Packaging equipment for packaging box

Abstract

The invention provides packaging equipment for a packaging box, and relates to the technical field of packaging of packaging boxes. The packaging equipment for the packaging box comprises a packaging machine and an air roller arranged on a lower machine core, the air roller is located between a front pressing wheel and a rear pressing wheel, and the air roller and the front pressing wheel rotate in the same direction; the number of the air inlet ends of the air roller is two, one air inlet end is an axial air inlet end, and the other air inlet end is a radial air inlet end. The inner layer penetrates through the outer layer and is communicated with the air inlet end of the air extracting pump, and the outer layer is rotationally sleeved with the outer layer in a sealed mode; the radial distance between the two layers of cavities is smaller than the inner diameter of the axial air inlet end of the air roller. At least one power device is coaxially arranged between the outer layer and the inner layer of the air roller, suction force provided by the sucking pump generates air flow in the air roller to drive the air roller to rotate, suction force is generated on the side wall of the air roller through circulation of the air flow in the air roller, the adhesive tape cannot fall off the air roller after being cut off, and therefore the adhesive tape is cut off. The sagging phenomenon of the broken end of the adhesive tape is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of packaging box packaging, and in particular to a packaging device for packaging boxes. Background Art

[0002] In the prior art, a packaging machine is used to package the packaging box. However, in the existing packaging machine, after the packaging box is sealed with tape, the end of the tape at the bottom of the machine core often sags due to the insufficient hardness of the tape itself. During the packaging process, the packaging tape at the bottom of the packaging box often becomes folded or loosely adhered, affecting the packaging effect of the packaging box. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a packaging device for packaging boxes, including a packaging machine, wherein the feeding end of the packaging machine is provided with at least two upper and lower movements, the two movements have the same structure and size, and the movement is rotatably provided with a tape, and further comprising: an air roller arranged on a lower movement located at the bottom of the movement, the air roller is rotatably arranged on the lower movement, and is located between a front pressure wheel and a rear pressure wheel on the lower movement, one axial end of the air roller is connected to an air pump that provides suction, and the air roller and the front pressure wheel rotate in the same direction; the air inlet end of the air roller is arranged at two places, one of which is far away from the suction pump. The air pump has an axial air inlet end, and the other is a radial air inlet end arranged on the side wall of the air roller, and is arranged in a circumferentially uniform spiral shape; the air roller is arranged in an inner and outer double layer, the inner layer penetrates the outer layer and is connected to the air inlet end of the vacuum pump, and the outer layer is sealed and rotatably sleeved on the outer layer; the radial spacing of the cavity between the two layers is smaller than the inner diameter of the axial air inlet end of the air roller; at least one power device is coaxially arranged between the outer layer and the inner layer of the air roller, the power device is fixedly connected to the outer layer, and is sealed and rotatably connected to the inner layer, and is driven to rotate by the airflow generated in the air roller by the suction provided by the vacuum pump.

[0004] Preferably, a bracket is provided between the air roller and the lower machine core, one end of the bracket is fixedly connected to the support plate where the front pressure wheel is located, and the other end of the bracket is fixedly connected to the air roller.

[0005] Preferably, the outer layer of the air roller is a rolling cylinder, the radial air inlet end spirally arranged on the side wall of the air roller is an air suction groove, and a plurality of the air suction grooves are evenly distributed along the axial circumference of the rolling cylinder and radially penetrate the rolling cylinder.

[0006] Preferably, two air-conducting rigid tubes are coaxially and sealedly rotatably connected at both ends of the rolling drum, and the two air-conducting rigid tubes are respectively fixedly inserted into brackets arranged between the air roller and the lower movement, and one of the air-conducting rigid tubes is connected to the air inlet end of the air pump, and the other is the axial air inlet end of the air roller.

[0007] Preferably, the inner layer of the air roller includes: a positioning cylinder and a flow balancing component, the positioning cylinder is coaxially arranged on the inner side of the rolling cylinder and rotatably cooperates with the inner wall of the rolling cylinder; the flow balancing component is coaxially fixed to the inner side of the positioning cylinder, and its two ends extend out of the positioning cylinder and the rolling cylinder and are fixed to the inner side of the air guide tube.

[0008] Preferably, a confluence groove is axially arranged on the side wall of the positioning tube, and the confluence groove radially penetrates the side wall of the positioning tube.

[0009] Preferably, the flow balancing assembly comprises a flow guide tube coaxially arranged in the positioning tube, a plurality of flow guide vanes are fixedly connected between the flow guide tube and the positioning tube, and the plurality of flow guide vanes are evenly arranged along the axial circumferential direction of the flow guide tube.

[0010] Preferably, the spiral direction of the guide vane is consistent with the spiral direction of the air suction groove.

[0011] Preferably, two shaft rods are symmetrically fixedly connected to both ends of the guide tube, and support bars are respectively fixedly connected to the two shaft rods, and the support bars are fixedly connected to the inner wall of the air guide tube.

[0012] Preferably, the power device is a closed impeller, the closed impeller is fixedly connected to the rolling cylinder, the closed impeller is sealingly rotatably connected to the positioning cylinder and the flow equalizing assembly, and the rotation direction of the closed impeller is consistent with the rotation direction of the belt.

[0013] The beneficial effects of the present invention are:

[0014] 1. Use an air pump to generate airflow in the air roller, and use the airflow to circulate in the air roller to generate suction on the side wall of the air roller, and then generate suction on the broken end of the tape at the lower core, so that the tape will not fall off the air roller after being cut, thereby avoiding the sagging of the broken end of the tape;

[0015] 2. The airflow in the air roller is used to enable the power device to rotate, and the outer layer of the air roller is driven to rotate in the same direction. In this way, the broken end of the tape can be subjected to relatively balanced suction when being adsorbed by the air roller, avoiding insufficient suction that causes the tape to be unable to be adsorbed on the air roller;

[0016] 3. The air inlet end of the air roller is connected to the vacuum pump at the other end of the axial direction, so that the air flow has a flow channel along the axial direction in the air roller, and then the Venturi effect is used to generate suction at the radial air inlet end on the side wall of the air roller.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The overall structure of a packaging device for a packaging box according to an embodiment of the present application is shown in FIG. Figure 1 ;

[0020] Figure 2 The overall structure of a packaging device for a packaging box according to an embodiment of the present application is shown in FIG. Figure 2 ;

[0021] Figure 3 is a schematic structural diagram of a lower movement according to an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of the positions of a telescopic bracket, an air pump and an air roller on a lower machine core according to an embodiment of the present application;

[0023] Figure 5 is an exploded view of a local structure of an air roller according to an embodiment of the present application;

[0024] Figure 6 is a cross-sectional view of an air roller according to an embodiment of the present application;

[0025] Figure 7 is a schematic diagram of a partial structure of an air roller according to an embodiment of the present application;

[0026] Figure 8 According to the embodiment of the present application Figure 7 A is an enlarged schematic diagram;

[0027] Fig. 9 is a schematic structural diagram of a positioning cylinder according to an embodiment of the present application;

[0028] Fig.10 is a structural exploded diagram of a telescopic bracket according to an embodiment of the present application;

[0029] Fig.11 is a schematic structural diagram of the lower movement after losing extrusion according to an embodiment of the present application;

[0030] Fig.12It is a schematic diagram of the positions of the air suction groove and the reverse groove according to the embodiments of the present application, as well as the physical structures of the two.

[0031] Icons: 1. Packaging machine; 11. Frame; 12. Lifting assembly; 13. Lower conveying assembly; 131. Width correction assembly; 14. Upper conveying assembly; 141. Sliding assembly; 2. Movement core; 21. Lower movement core; 211. Fixed plate; 212. Tape bracket; 213. Front support plate; 214. Rear support plate; 215. Tape; 216. Unidirectional knurled wheel; 217. Front pressure wheel; 218. Rear pressure wheel; 219. Cutting knife assembly; 22. Upper movement core; 3. Telescopic bracket; 31. Bracket; 311. Horizontal plate; 32. Limit cylinder; 33. C-shaped sliding frame; 34. Elastic assembly; 341. Adjusting plate; 342. Screw; 343. Guide rod; 344. Elastic member; 4. Air extraction pump; 5. Air roller; 51. Rolling cylinder; 511. Air suction groove; 512. Reverse groove; 52. Air guide hard pipe; 53. Positioning cylinder; 531. Confluence groove; 54. Flow equalization assembly; 541. Guide cylinder; 542. Guide vane; 543. Shaft rod; 544. Support bar; 55. Closed impeller. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0034] Embodiment 1, as Figure 1-Figure 12 shown, a packaging device for packaging boxes according to an embodiment of the present application includes a packaging machine 1. At least two movement cores 2, upper and lower, are provided at the feeding end of the packaging machine 1. The two movement cores 2 have the same structural size, and a tape 215 is rotatably provided on the movement core 2.

[0035] It should be noted that in the specific embodiments of the present application, as Figure 1 and Figure 2As shown, the packaging machine 1 includes a frame 11, on which a lifting assembly 12 is mounted, and a lower conveying assembly 13 and an upper conveying assembly 14 are arranged between the lifting assembly 12 and the frame 11, and at least two movements 2 arranged up and down are respectively arranged on one side of the feeding end of the lower conveying assembly 13 and the upper conveying assembly 14, and the lower conveying assembly 13 and the upper conveying assembly 14 change the height distance between the two through the lifting assembly 12. If the packaging machine 1 needs to package the four sides of the packaging box, the lower conveying assembly 13 and the upper conveying assembly 14 can also be respectively arranged as two groups, and a width correction assembly 131 and a sliding assembly 141 are additionally provided to cooperate with the lifting assembly 12 to adjust the distance between the lower conveying assembly 13 and the upper conveying assembly 14 at the same height.

[0036] Among them, Figure 1-Figure 3 As shown, the movement 2 includes a lower movement 21 and an upper movement 22, and the lower movement 21 and the upper movement 22 have the same structure. Specifically, as shown in FIG. Figure 3 As shown, the lower movement 21 generally includes a fixing plate 211, a tape holder 212, a front supporting plate 213, a rear supporting plate 214, a tape 215, a one-way knurling wheel 216, a front pressing wheel 217, a rear pressing wheel 218 and a cutter assembly 219. The tape 215 is rotatably mounted on the tape holder 212 and is as shown in FIG. Figure 3 As shown, the tape 215 is passed around the multiple rollers on the fixed plate 211 in sequence, and the front pressure wheel 217, the rear pressure wheel 218 and the cutter assembly 219 are used to seal the tape 215 on the packaging box and cut it off.

[0037] Since the above are all prior art, they are only for reference in the specific embodiments of this application, and the specific working principles and how to operate are not described in detail here.

[0038] like Figure 3-Figure 7As shown, according to an embodiment of the present application, a packaging device for a packaging box also includes: an air roller 5 arranged on the lower movement 21, the air roller 5 is rotatably arranged on the lower movement 21, and is located between the front pressure wheel 217 and the rear pressure wheel 218 on the lower movement 21, and one axial end of the air roller 5 is connected to an air pump 4 that provides suction. It should be noted that in a specific embodiment of the present application, a filtering device can be additionally provided between the air inlet end of the air pump 4 and the air roller 5 to prevent the air flow entering the air pump 4 from carrying impurities and causing damage to the air pump 4. The air roller 5 and the front pressure wheel 217 rotate in the same direction. It can be understood here that the position between the air roller 5 and the front pressure wheel 217 is roughly fixed; the air inlet end of the air roller 5 is set at two places, one of which is an axial air inlet end away from the air pump 4. , and the other is a radial air inlet end arranged on the side wall of the air roller 5, and is arranged in a circumferentially uniform spiral shape; the air roller 5 is arranged in an inner and outer double-layer arrangement, the inner layer penetrates the outer layer and is connected to the air inlet end of the vacuum pump 4, so that an airflow can be formed inside the air roller 5, and the outer layer is sealed and rotatably sleeved on the outer layer; the radial spacing of the cavity between the two layers is smaller than the inner diameter of the axial air inlet end of the air roller 5; at least one power device is coaxially arranged between the outer and inner layers of the air roller 5, the power device is fixedly connected to the outer layer, and is sealed and rotatably connected to the inner layer, and is driven by the airflow generated in the air roller 5 by the suction force provided by the vacuum pump 4 to rotate. It should be noted that the direction of rotation of the power device needs to keep the broken end of the tape 215 running along the original movement direction of the tape 215 and cannot run in the opposite direction.

[0039] In addition, a packaging box packaging device according to an embodiment of the present application also has the following additional technical features:

[0040] like Figure 4 As shown, a bracket is provided between the air roller 5 and the lower movement 21 , one end of the bracket is fixedly connected to the support plate where the front pressure wheel 217 is located, and the other end of the bracket is fixedly connected to the air roller 5 .

[0041] like Figure 5 As shown, the outer layer of the air roller 5 is a rolling cylinder 51, and the radial air inlet end spirally arranged on the side wall of the air roller 5 is an air suction groove 511. The multiple air suction grooves 511 are evenly distributed along the axial circumference of the rolling cylinder 51 and radially penetrate the rolling cylinder 51, so that the inside and outside of the rolling cylinder 51 are connected.

[0042] like Figure 4-Figure 6 As shown, two air-conducting rigid tubes 52 are coaxially and sealably connected to the two ends of the rolling cylinder 51 for rotation. The two air-conducting rigid tubes 52 are respectively fixedly inserted into the brackets arranged between the air roller 5 and the lower movement 21, and one of the air-conducting rigid tubes 52 is connected to the air inlet end of the vacuum pump 4 (not shown in the figure), and the other is the axial air inlet end of the air roller 5. It can be seen that the rolling cylinder 51 can be sealed and rotated between the two air-conducting rigid tubes 52.

[0043] like Figure 5 and Figure 6 As shown, the inner layer of the air roller 5 includes: a positioning cylinder 53 and a flow equalizing component 54. The positioning cylinder 53 is coaxially arranged on the inner side of the rolling cylinder 51, and rotates with the inner wall of the rolling cylinder 51. It can be understood that the rotation of the rolling cylinder 51 is not disturbed by the positioning cylinder 53; the flow equalizing component 54 is coaxially fixed to the inner side of the positioning cylinder 53, and its two ends extend out of the positioning cylinder 53 and the rolling cylinder 51, and are fixed to the inner side of the air guide tube 52, so that the flow equalizing component 54, the positioning cylinder 53 and the air guide tube 52 are fixed, so that the rolling cylinder 51 can rotate relative to each other.

[0044] like Fig. 9 As shown, a confluence groove 531 is axially arranged on the side wall of the positioning cylinder 53, and the confluence groove 531 radially penetrates the side wall of the positioning cylinder 53. It should be noted that Figure 3 As shown, the specific position of the confluence groove 531 on the side wall of the positioning tube 53 should be set in the direction toward the adhesive tape 215, that is, the confluence groove 531 is located at the tangent point of the adhesive tape 215 and the air roller 5.

[0045] like Figure 5-Figure 7 As shown, the flow balancing assembly 54 includes a guide tube 541 coaxially arranged in the positioning tube 53 , a plurality of guide vanes 542 are fixedly connected between the guide tube 541 and the positioning tube 53 , and the plurality of guide vanes 542 are evenly arranged along the axial circumferential direction of the guide tube 541 .

[0046] It should be noted that the spiral direction of the guide plate 542 is consistent with the spiral direction of the suction groove 511. It can be understood that when the spiral directions of the two are consistent, the air flow can flow more smoothly inside the entire air roller 5, so that a more stable suction force is generated at the confluence groove 531.

[0047] Further, such as Figure 5 As shown, two shaft rods 543 are symmetrically fixed to the two ends of the guide tube 541, and support bars 544 are respectively fixed to the two shaft rods 543. The support bars 544 are fixed to the inner wall of the air guide tube 52 to fix the guide tube 541 while reducing the impact on the airflow in the air guide tube 52.

[0048] It should be noted that in the specific embodiment of the present application, the power device is a closed impeller 55, and its specific structure is as follows: Figure 7 As shown ( Figure 7 The figure shows a partial part, and the front cover plate is not shown). The closed impeller 55 is fixedly connected to the rolling cylinder 51, and the closed impeller 55 is sealed and rotatably connected to the positioning cylinder 53. The rotation direction of the closed impeller 55 is consistent with the rotation direction of the tape 215.

[0049] It is further necessary to explain that if Figure 5 and Figure 6As shown, in another specific embodiment of the present application, two closed impellers 55 can be symmetrically arranged at both ends of the guide cylinder 541. When the closed impeller 55 is located at the air inlet end, the axial end of the closed impeller 55 is the air inlet end, and the radial end is the air outlet end; when the closed impeller 55 is located at the air outlet end, the radial end of the closed impeller 55 is the air inlet end, and the axial end is the air outlet end. In this way, the flow of air in the entire air roller 5 is utilized in conjunction with the two closed impellers 55 at both ends to enhance the rotation ability of the rolling cylinder 51.

[0050] The following describes the use process of a packaging device for a packaging box according to an embodiment of the present application with reference to the accompanying drawings:

[0051] In specific use, when the packaging box ( Figure 1 The square object located between the lower conveying assembly 13 and the upper conveying assembly 14 is displaced to between the lower movement 21 and the upper movement 22 under the conveying action of the lower conveying assembly 13 and the upper conveying assembly 14. At this time, the positions of the components on the lower movement 21 and the upper movement 22 are as follows: Figure 3 As shown, the sticky side of the tape 215 faces the packaging box and is adhered to the outer wall of the packaging box. At this time, although the roller 51 on the air roller 5 produces a rotation in the same direction as the front pressure wheel 217 under the suction provided by the vacuum pump 4, the tape 215 is not cut at this time, and the suction at the suction groove 511 on the roller 51 only acts on the smooth surface of the tape 215. Therefore, the tape 215 will not have unnecessary displacement between the front pressure wheel 217 and the rear pressure wheel 218 due to the rotation of the roller 51 (that is, wrinkles will occur, or there will be a phenomenon of tight adhesion to the packaging box). When the packaging box is continuously conveyed by the lower conveying assembly 13 and the upper conveying assembly 14, it gradually moves out of the range of the movement 2. In this process, the tape 215 located between the front pressure wheel 217 and the rear pressure wheel 218 will be cut by the cutter assembly 219, and the state of the entire lower movement 21 will appear as shown in the figure. Fig.11In the state shown, it can be understood that, because the vacuum pump 4 continuously provides suction to the air roller 5, air will continue to enter the air guide tube 52 away from the air inlet end of the vacuum pump 4. Before the air enters the cavity between the positioning cylinder 53 and the guide cylinder 541, it will pass through the closed impeller 55 here, and then enter the cavity between the positioning cylinder 53 and the guide cylinder 541 after passing through the closed impeller 55. At this time, the closed impeller 55 will rotate due to the flow of air, and then drive the rolling cylinder 51 fixed to it to rotate. The air enters the positioning cylinder 53 and the guide cylinder 541. When the air flows through the cavity between the guide tubes 541, it will also be guided by the multiple guide blades 542 therein to form a spiral path, and the spiral direction of the spiral path is preferably consistent with the rotation direction of the blades in the closed impeller 55. This design can firstly make the airflow as evenly distributed as possible, and secondly make the airflow as smooth as possible when entering the spiral path, avoiding turbulence when the airflow passes through the closed impeller 55 and enters the spiral path, causing energy loss. Then, the airflow finally flows into the closed impeller 55 from the radial direction of the other end and exits from its axis. The air flows out to the outside, and then enters the air pump 4 through another air guide tube 52 to form a complete circulation channel. Specifically, during the circulation process in the air roller 5, because the radial spacing of the cavity between the positioning cylinder 53 and the guide cylinder 541 is smaller than the inner diameter of the air guide tube 52, and a confluence groove 531 is provided on the side wall of the positioning cylinder 53, a certain suction force (Venturi effect) will be generated at the confluence groove 531, and the confluence groove 531 is connected to the multiple suction grooves 511. In this way, the side wall of the rotating rolling cylinder 51 is located at the confluence groove 531. Suction can be generated at the suction groove 511 at 1. It can be understood that at this time, a suction force will be generated between the rolling drum 51 and the adhesive tape 215 (the specific spacing distance is the same as the pitch of the suction groove 511), and as the rolling drum 51 rotates, the suction point changes along the axial direction of the rolling drum 51, and the suction force generated on the side wall of the rolling drum 51 will make the adhesive tape 215 between the rolling drum 51 and the front pressure wheel 217 be sucked after the adhesive tape 215 is cut, that is, the broken end of the adhesive tape 215 will be in contact with the rolling drum 51. Fig.11 As shown (the path of the tape 215 is not shown in the figure, see Figure 3 The broken end of the tape 215 on the lower movement 21 will not sag, thereby avoiding the phenomenon of the tape 215 under the packaging box being folded or not sticking firmly during the packaging process, thereby affecting the packaging effect of the packaging box.

[0052] Embodiment 2, in the related art, in a packaging device for a packaging box, the air roller 5 is arranged between the front pressing wheel 217 and the rear pressing wheel 218, and is relatively fixed on the front supporting plate 213 where the front pressing wheel 217 is located, such as Figure 3 and Fig.11As shown, when the front pressure roller 217 rotates along with the front support plate 213, the air roller 5 will also rotate accordingly. When the front pressure roller 217 is flush with the rear pressure roller 218, the air roller 5 cannot protrude beyond the front pressure roller 217 and the rear pressure roller 218. On the contrary, when the front pressure roller 217 and the rear pressure roller 218 extend out of the fixed plate 211 under the action of an external force, the air roller 5 should be located above the front pressure roller 217. In actual use, if the tape 215 between the air roller 5 and the front pressure roller 217 is not vertical, it can be imagined that when the packaging box moves to the position of the front pressure roller 217, the front pressure roller 217 will be forced to press towards the inner side of the fixed plate 211, and at this time, the air roller 5 will rotate synchronously, which will cause the tape 215 between the air roller 5 and the front pressure roller 217 to fail to adhere to the packaging box. As the packaging box moves towards the rear pressure roller 218, this section of the tape 215 will show phenomena such as folding, affecting the overall packaging effect of the packaging box.

[0053] According to some embodiments of the present application, as Figure 3 , Figure 4 , Fig.10 and Fig.11 shown, the bracket provided between the air roller 5 and the lower movement mechanism 21 is a telescopic bracket 3. The telescopic bracket 3 includes: two brackets 31, two limiting cylinders 32, a U-shaped sliding frame 33, and an elastic component 34. The two brackets 31 are fixedly connected by a cross plate 311. One end of the bracket 31 is fixedly connected to the support plate where the front pressure roller 217 is located (specifically, the front support plate 213 in the embodiments of the present application); the two limiting cylinders 32 are symmetrically and fixedly connected to one end of the two brackets 31 away from the support plate where the front pressure roller 217 is located; the U-shaped sliding frame 33 is elastically slidably inserted into the two limiting cylinders 32, and its U-shaped open end extends out of the limiting cylinder 32 and is fixedly sleeved on the air guide rigid tube 52; the elastic component 34 is arranged between the cross plate 311 and the U-shaped sliding frame 33 for changing the elastic force magnitude of the U-shaped sliding frame 33 sliding on the limiting cylinder 32.

[0054] Specifically, the elastic component 34 includes: an adjusting plate 341, a screw 342, two guide rods 343, and two elastic members 344. The adjusting plate 341 is slidably limited between the two brackets 31; the screw 342 is rotatably inserted into the cross plate 311 and is in threaded cooperation with the adjusting plate 341; the two guide rods 343 are fixedly connected to the cross plate 311 and are slidably matched with the adjusting plate 341; the two elastic members 344 are respectively sleeved on the two guide rods 343 and are located between the cross plate 311 and the adjusting plate 341.

[0055] It should be noted that the elastic member 344 can be a spring in the prior art.

[0056] Thus, it can be understood that during specific use, the distance between the adjusting plate 341 and the cross plate 311 can be changed by rotating the screw rod 342, so that when the air roller 5 and the front pressing wheel 217 are in the vertical direction, the tape 215 between the two is at least in a vertical state (it is also possible to make the air roller 5 located at the upper right of the front pressing wheel 217 when in the vertical direction). Further, it can be understood that since the air roller 5 is elastically slidably inserted on the two limiting cylinders 32 through the U-shaped sliding frame 33, when the air roller 5 and the front pressing wheel 217 are in the horizontal direction, the packaging box can press the air roller 5 to contract on the limiting cylinder 32 to ensure that the front pressing wheel 217, the air roller 5 and the rear pressing wheel 218 are all in contact with the packaging box, that is, to ensure that the tape 215 located there will not be folded or the like. And when the packaging box abuts against the front pressing wheel 217, its side wall has already abutted against the air roller 5. At this time, the tape 215 between the air roller 5 and the front pressing wheel 217 will be adhered to the side wall of the packaging box until the packaging box continues to move and continuously drags the tape 215, so that the tape 215 can completely package the packaging box. Further, due to the elastic installation of the air roller 5 on the bracket 31 and the rotation of the screw rod 342 can adjust the elastic force value of the elastic member 344 (the degree of compression of the elastic member 344), thus, when the packaging box is located above the front pressing wheel 217, the air roller 5 and the rear pressing wheel 218, the magnitude of the reverse force of the air roller 5 on the packaging box can be changed, and继而 can, to a certain extent, avoid the possibility of the packaging box being deformed due to the abutment of the air roller 5.

[0057] Embodiment 3. In the related art, for this packaging equipment for packaging boxes, due to the continuous rotation of the air roller 5 under the action of the air extraction pump 4 to ensure its continuous adsorption of the tape 215 during the working process, and the air suction grooves 511 on the outer wall of the air roller 5 are designed in a spiral shape. Therefore, when the air roller 5 and the front pressing wheel 217 are in the vertical direction, at this time, since both of them are in contact with the smooth surface of the tape 215, the tape 215 here will only be affected by the suction force on the outer wall of the air roller 5 and will not sag. However, due to the continuous rotation of the rolling cylinder 51, the spiral air suction grooves 511 will form an interval suction point that continuously moves axially with the confluence groove 531. Under the action of the continuously moving interval suction point with the same displacement direction, the tape 215 will inevitably move axially on the rolling cylinder 51. In this way, it is very easy to cause the tape 215 between the air roller 5 and the front pressing wheel 217 to move, that is, it may not remain flat. Even when the suction force is large, it will cause serious deviation of the tape 215, which has an adverse effect on the subsequent packaging effect of the packaging box.

[0058] According to some embodiments of the present application, such as Figure 7 、 Figure 8 and Fig.12As shown, a plurality of reverse grooves 512 are also provided on the side wall of the rolling cylinder 51. The plurality of reverse grooves 512 are evenly arranged along the axial and circumferential directions of the rolling cylinder 51. The pitches of the two are the same, and the spiral directions are opposite.

[0059] Therefore, it can be understood that when the suction force is transmitted to the suction groove 511 intersecting with itself through the confluence groove 531 , a part of the suction force will be shared by the reverse groove 512 intersecting with the suction groove 511 .

[0060] The reverse groove 512 does not penetrate the side wall of the rolling cylinder 51 along the radial direction of the rolling cylinder 51 . It is understandable that once penetrated, the side wall of the rolling cylinder 51 cannot form a whole.

[0061] It can be understood that, in specific use, since the spiral directions of the reverse groove 512 and the suction groove 511 are opposite, firstly, when the rolling drum 51 rotates, the axial displacement force exerted by the spiral groove on the side wall on the tape 215 can be balanced in two directions (that is, the forces of axial positive movement and reverse movement are equal), and then the tape 215 here is stabilized to a certain extent. Secondly, the suction point that is originally formed with the rotation of the rolling drum 51 and continuously displaced in one direction in the axial direction will be decomposed to a certain extent due to the reverse groove 512 set in the opposite direction, such as Fig.12 As shown, for example, the multiple suction points at the axial center of the rolling drum 51 should continue to shift to the right as the rolling drum 51 rotates. Although the suction point will continue to shift to the right at this time, because the reverse groove 512 and the suction groove 511 intersect and the spiral directions of the two are opposite, the suction at the suction point will be evenly distributed by the reverse groove 512 (to the joint of the tape 215 and the vicinity of the joint). Although the tape 215 will still be subjected to a certain force to the right, the reverse action of the reverse groove 512 will greatly reduce the axial displacement force. In addition, the tape 215 is a smooth surface in contact with the air roller 5, which will greatly slow down the deviation of the tape 215 in the continuously rotating rolling drum 51. In the specific embodiment of the present application, it is preferred that the number of reverse grooves 512 is greater than the number of suction grooves 511, so as to balance the two axial displacement forces as much as possible to ensure that the tape 215 does not deviate in the continuously rotating rolling drum 51 as much as possible.

[0062] It should be noted that the specific models and specifications of the lifting assembly 12, the lower conveying assembly 13, the width correction assembly 131, the upper conveying assembly 14, the sliding assembly 141, the tape bracket 212, the front support plate 213, the rear support plate 214, the tape 215, the one-way knurled wheel 216, the front pressure wheel 217, the rear pressure wheel 218, the cutter assembly 219, the screw 342, the elastic member 344, the vacuum pump 4 and the closed impeller 55 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0063] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A packaging device for a packaging box, comprising a packaging machine (1), wherein the feeding end of the packaging machine (1) is provided with at least two upper and lower movements (2), the two movements (2) are of the same structure and size, and an adhesive tape (215) is rotatably provided on the movement (2), characterized in that: An air roller (5) is provided on the lower movement (21) located at the bottom of the movement (2), and the air roller (5) is rotatably arranged on the lower movement (21) and is located between a front pressure wheel (217) and a rear pressure wheel (218) on the lower movement (21). One axial end of the air roller (5) is connected to an air pump (4) for providing suction force, and the air roller (5) and the front pressure wheel (217) rotate in the same direction. The air inlet end of the air roller (5) is arranged at two locations, one of which is an axial air inlet end away from the air pump (4), and the other is a radial air inlet end arranged on the side wall of the air roller (5), and is arranged in a circumferentially uniform spiral shape; The air roller (5) is provided with an inner and outer double layer, the inner layer penetrates the outer layer and is connected with the air inlet end of the air pump (4), and the outer layer is sealingly rotatably sleeved on the outer layer; The radial spacing of the cavities between the two layers is smaller than the inner diameter of the axial air inlet end of the air roller (5); At least one power device is coaxially arranged between the outer layer and the inner layer of the air roller (5); the power device is fixedly connected to the outer layer and is sealingly and rotatably connected to the inner layer, and is driven to rotate by the airflow generated in the air roller (5) by the suction force provided by the vacuum pump (4).

2. A packaging box packaging device as claimed in claim 1, characterized in that: A bracket is provided between the air roller (5) and the lower machine core (21), one end of the bracket is fixedly connected to the support plate where the front pressure wheel (217) is located, and the other end of the bracket is fixedly connected to the air roller (5).

3. A packaging box packaging device as claimed in claim 1, characterized in that: The outer layer of the air roller (5) is a rolling cylinder (51), and the radial air inlet end spirally arranged on the side wall of the air roller (5) is an air suction groove (511). A plurality of the air suction grooves (511) are evenly distributed along the axial circumference of the rolling cylinder (51) and radially penetrate the rolling cylinder (51).

4. A packaging box packaging device as claimed in claim 3, characterized in that: Two air guide tubes (52) are coaxially and sealedly rotatably connected at both ends of the rolling cylinder (51), and the two air guide tubes (52) are respectively fixedly plugged into brackets arranged between the air roller (5) and the lower movement (21), and one of the air guide tubes (52) is connected to the air inlet end of the air pump (4), and the other is the axial air inlet end of the air roller (5).

5. A packaging box packaging device as claimed in claim 4, characterized in that: The inner layer of the air roller (5) comprises: A positioning cylinder (53), the positioning cylinder (53) being coaxially arranged on the inner side of the rolling cylinder (51) and rotatably matched with the inner wall of the rolling cylinder (51); A flow balancing component (54) is coaxially fixed to the inner side of the positioning cylinder (53), and its two ends extend out of the positioning cylinder (53) and the rolling cylinder (51), and are fixed to the inner side of the air guide tube (52).

6. A packaging box packaging device as claimed in claim 5, characterized in that: A confluence groove (531) is axially arranged on the side wall of the positioning cylinder (53), and the confluence groove (531) radially penetrates the side wall of the positioning cylinder (53).

7. A packaging box packaging device as claimed in claim 5, characterized in that: The flow balancing component (54) comprises a flow guide tube (541) coaxially arranged in the positioning tube (53); a plurality of flow guide plates (542) are fixedly connected between the flow guide tube (541) and the positioning tube (53); and the plurality of flow guide plates (542) are evenly arranged along the axial circumference of the flow guide tube (541).

8. A packaging box packaging device as claimed in claim 7, characterized in that: The spiral direction of the guide plate (542) is consistent with the spiral direction of the air suction groove (511).

9. A packaging box packaging device as claimed in claim 7, characterized in that: Two shaft rods (543) are symmetrically fixedly connected to the two ends of the guide tube (541), and support bars (544) are respectively fixedly connected to the two shaft rods (543), and the support bars (544) are fixedly connected to the inner wall of the air guide tube (52).

10. A packaging box packaging device as claimed in claim 9, characterized in that: The power device is a closed impeller (55), the closed impeller (55) is fixedly connected to the rolling cylinder (51), the closed impeller (55) is sealed and rotatably connected to the positioning cylinder (53) and the flow equalizing component (54), and the rotation direction of the closed impeller (55) is consistent with the rotation direction of the tape (215).

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