Adhesive tape pasting device for bag opening of packaging bag

Abstract

The invention provides a packaging bag opening adhesive tape pasting device which comprises a rack, the left end and the top of the rack are both rotationally connected with unwinding rollers, the unwinding roller at the left end is sleeved with a packaging bag roll, the unwinding roller at the top is sleeved with a release tape roll, and the release tape roll is arranged on the top of the rack. A plurality of packaging bag guide rollers, a pasting assembly, a plurality of glue pressing rollers and a plurality of pairs of traction belts are sequentially installed on the rack from left to right, the pasting assembly comprises an upper pasting roller and a lower pasting roller, and an annular extrusion air cushion matched with the lower pasting roller is embedded in the side wall of the front end of the upper pasting roller; a rubber pressing plate matched with the rubber pressing rollers is installed below the rubber pressing rollers, and a pair of release belt guide rollers is further installed on the portion, below the release belt coil, of the rack. The device can continuously complete the pasting process of the packaging bag and the adhesive tape, pasting is uniform, the tail section of the packaging bag roll and the tail section of the release tape roll can be pasted, waste is avoided, and glue can be saved to the maximum extent in a dispensing mode.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag production, in particular to a sticking device for a packaging bag mouth adhesive tape. Background Art

[0002] There are many kinds of packaging bags at present, among which the packaging bags used in the express delivery industry are express bags. Express bags refer to bags used to package documents, receipts, materials, goods, etc. in the express delivery industry. The most commonly used ones are plastic express bags made of polyethylene materials, which have the characteristics of low cost, easy use and good waterproof performance.

[0003] In order to facilitate sealing of the express packaging bag, it is usually necessary to stick tape on the bag opening. Currently, a layer of tape is usually applied on the edge of the bag opening by a machine, and then a layer of release tape is applied. This machine has the following defects: after the packaging bag roll and the release tape roll are unwound, the tail of the packaging bag and the release tape leave the unwinding roller and are in a taut state, and usually cannot be pasted, resulting in waste; there is also uneven pasting. Summary of the invention

[0004] In view of the above problems, the present invention provides a pasting device for the bag mouth tape of a packaging bag, which can continuously complete the pasting process of the packaging bag and the tape, and the pasting is uniform. The tail sections of the packaging bag roll and the release tape roll can be pasted without waste, and the glue can be saved to the maximum extent by dispensing.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] The adhesive tape of the bag mouth of the packaging bag is attached to the upper and lower ends of the packaging bag, and the adhesive tape of the bag mouth of the packaging bag is attached to the adhesive tape of the bag mouth of the packaging bag. The adhesive tape of the bag mouth of the packaging bag is attached to the adhesive tape of the bag mouth of the packaging bag, and the adhesive tape of the bag mouth of the packaging bag is attached to the adhesive tape of the bag mouth of the packaging bag.

[0007] Preferably, the extension component includes an unwinding shaft rotatably connected to the unwinding roller, an extension belt is wound on the unwinding shaft, the end of the extension belt is bonded to the tail end of the packaging bag or the release tape, and a coil spring is mounted on the end of the unwinding shaft.

[0008] Preferably, limiting edges are fixed on both sides of the unwinding roller, and limiting grooves matching the limiting edges are provided on both sides of the winding drum in the center of the packaging bag roll and the release tape roll. A strip hole is provided on the top of the winding drum for inserting the tail end of the packaging bag or the release tape, and a strip opening corresponding to the strip hole is provided on the top of the unwinding roller, and the front end of the unwinding roller is open.

[0009] Preferably, an air distribution pipe extending therein is fixed to the front end of the upper pasting roller, a plurality of connecting pipes connected to the annular extrusion air cushion are circumferentially distributed at the extended end of the air distribution pipe, and an air injection pipe is connected to the front end of the air distribution pipe via a rotary joint.

[0010] Preferably, the slitting assembly comprises a knife holder fixedly mounted on a frame, a cylinder and a slitting knife connected thereto are mounted on the knife holder, and a knife base is mounted below the knife holder.

[0011] Preferably, a plurality of pairs of the traction belts are arranged in parallel transversely, and the pasted packaging bags are conveyed by the plurality of pairs of traction belts in a contact manner.

[0012] Preferably, the frame is rotatably connected to a plurality of transmission shafts that are connected one by one with a plurality of rubber pressing rollers, a worm gear is fixed to the end of the transmission shaft, the frame is rotatably connected to a drive shaft, the drive shaft is serially connected to a plurality of worms that mesh with the corresponding worm gears, and a first motor that can drive the drive shaft to rotate is installed on the frame.

[0013] Preferably, the glue dispensing mechanism includes a glue dispensing box fixedly mounted on the top of a frame, a circular sealing cover fixed to the bottom of the glue dispensing box, a glue dispensing disk rotatably connected inside the circular sealing cover, a plurality of glue grooves provided on the circumferential side walls of the glue dispensing disk, a glue cavity provided inside the top of the glue dispensing box, a lower glue pipe connected to the top of the circular sealing cover provided at the bottom of the glue cavity, a glue injection pipe provided at the top of the glue cavity, a glue blowing assembly installed in the middle of the glue dispensing disk, and a glue dispensing port adapted to the glue groove provided at the bottom of the circular sealing cover.

[0014] Preferably, a second motor is installed on the front side of the glue dispensing box, and an output end of the second motor is fixedly connected to the front side of the glue dispensing tray.

[0015] Preferably, the glue blowing assembly includes a groove arranged on the rear side of the middle part of the glue dispensing tray, a blowing pipe extending into the groove is fixed on the rear side of the glue dispensing box, a docking joint is provided at the bottom of the extended end of the blowing pipe, a plurality of docking pipes connecting the glue groove and the groove are provided in the circumferential direction of the glue dispensing tray, and a sealing ring adapted to the air inlet end of the docking pipe is installed at the end of the docking joint.

[0016] The beneficial effects of the present invention are:

[0017] 1. By installing unwinding rollers, packaging bag guide rollers, release tape guide rollers, pasting components, multiple glue pressing rollers and multiple pairs of traction belts, the multiple pairs of traction belts can clamp the packaging bags at intervals, so that the packaging bags are conveyed in a flat state with uniform force, and then the packaging bags and the release tape can be pulled synchronously, so that they pass through the pasting component in a flat and tight state, and the release tape is glued to the bag opening of the packaging bag with glue, and then multiple glue pressing rollers and glue pressing plates cooperate to extrude evenly, so as to achieve a continuous pasting process with high pasting efficiency. Before the pasting component works, it is injected into the air distribution pipe through the air injection pipe, and then injected into the annular extrusion air cushion through the air distribution pipe to expand it. The position of the annular extrusion air cushion corresponds to the position of the release tape and the bag opening, providing uniform extrusion force, and accurately pasting the release tape to the bag opening with glue.

[0018] 2. By installing the extension component and the slitting component, in the process of fitting the packaging bag roll and the release tape roll, it is only necessary to fit the winding drum onto the unwinding roller, and the limiting edges on both sides are inserted into the corresponding limiting grooves, so that the packaging bag roll and the release tape roll can rotate synchronously with the unwinding roller, and the tail end of the packaging bag roll passes through the strip hole on the winding drum. After fitting, the tail end of the passed packaging bag enters the hollow unwinding roller through the strip mouth, and double-sided tape is pasted on the end of the wound extension tape in advance. After fitting, the tail end of the packaging bag or the release tape is bonded to the end of the extension tape. When the packaging bag roll and the release tape roll are unwound, the tail end of the packaging bag will pull the extension tape, and the extension tape will be released by the unwinding shaft, so that the tail section of the packaging bag and the tail section of the release tape can continue to be transported to the pasting component in a taut and flat state, so as to avoid waste of the tail section. After pasting is completed, the cylinder is started to drive the slitting knife to move down to cut the bonding part of the extension tape, and the unwinding shaft is reeled up under the action of the winding spring for next use.

[0019] 3. By installing the dispensing mechanism, the glue injection tube injects glue into the glue cavity, and then the glue is injected into the glue groove rotated to the top through the lower glue tube to fill it. The dispensing disk rotates continuously to fill multiple glue grooves in turn. When the glue groove rotates to the corresponding dispensing port at the bottom, the air blowing tube blows air. At this time, the docking joint is docked with the docking tube rotated to the bottom. Through the sealing ring, air can be blown into the glue groove to quickly blow out the glue and apply it to the surface of the release tape. Multiple glue points can be continuously applied on the release tape at intervals. After extrusion and pasting, they can spread to the surrounding area, thereby greatly saving the amount of glue while meeting the bonding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0022] Figure 3 A schematic cross-sectional view of the upper pasting roller proposed by the present invention;

[0023] Figure 4 This is a front cross-sectional schematic diagram of the glue dispensing box proposed by the present invention;

[0024] Figure 5 It is a side cross-sectional schematic diagram of the glue dispensing box proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the transmission structure of the transmission shaft proposed by the present invention;

[0026] Figure 7 This is a top view schematic diagram of multiple pairs of traction belts proposed by the present invention.

[0027] In the figure: 1 frame, 2 unwinding roller, 3 packaging bag roll, 4 release tape roll, 5 packaging bag guide roller, 6 lower pasting roller, 7 upper pasting roller, 8 annular extrusion air cushion, 9 release tape guide roller, 10 glue dispensing box, 11 glue pressing roller, 12 glue pressing plate, 13 transmission shaft, 14 traction belt, 15 limiting edge, 16 strip mouth, 17 strip hole, 18 extension belt, 19 unwinding shaft, 20 glue cavity, 21 glue injection hose, 22 lower glue hose, 23 circular sealing cover, 24 glue groove, 25 butt joint, 26 air blowing hose, 27 glue dispensing tray, 28 butt joint, 29 glue dispensing port, 30 second motor, 31 groove, 32 air injection hose, 33 air distribution hose, 34 worm, 35 worm wheel, 36 drive shaft, 37 first motor, 38 slitting assembly. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] Reference Figure 1-7The bag-opening adhesive tape of the packaging bag is pasted on the frame 1, and the left end and the top of the frame 1 are rotatably connected with a reel 2, a packaging bag roll 3 is mounted on the left end reel 2, and a release tape roll 4 is mounted on the top reel 2. The frame 1 is equipped with multiple packaging bag guide rollers 5, a pasting assembly, multiple glue pressing rollers 11 and multiple pairs of traction belts 14 from left to right. The multiple pairs of traction belts 14 are arranged in parallel horizontally, and the pasted packaging bags are conveyed by the multiple pairs of traction belts 14. The multiple pairs of traction belts 14 can clamp the packaging bags at intervals, so that the packaging bags are conveyed in a flat state with uniform force, and then the packaging bags and the release tape can be pulled synchronously, so that they pass through the pasting assembly in a flat and tight state, and the release tape is pasted on the bag opening of the packaging bag through glue, and then the multiple glue pressing rollers 11 and the glue pressing plates 12 cooperate to extrude the uniform tape, so as to realize a continuous pasting process with high pasting efficiency.

[0031] The pasting assembly includes an upper pasting roller 7 and a lower pasting roller 6. The front end side wall of the upper pasting roller 7 is embedded with an annular extrusion air cushion 8 that cooperates with the lower pasting roller 6. The front end of the upper pasting roller 7 is fixed with an air distribution pipe 33 extending therein. The extended end of the air distribution pipe 33 is circumferentially distributed with multiple connecting pipes connected to the annular extrusion air cushion 8. The front end of the air distribution pipe 33 is connected to the air injection pipe 32 through a rotating joint. Before the pasting assembly works, the air is injected into the air distribution pipe 33 through the air injection pipe 32, and then injected into the annular extrusion air cushion 8 through the air distribution pipe to expand it. The position of the annular extrusion air cushion 8 corresponds to the position of the release tape and the bag opening, providing uniform extrusion force, and accurately sticking the release tape to the bag opening through glue.

[0032] A rubber pressing plate 12 cooperating with the multiple rubber pressing rollers 11 is installed below the multiple rubber pressing rollers 11, and a multiple transmission shafts 13 that are connected to the multiple rubber pressing rollers 11 one by one are rotatably connected to the frame 1. A worm gear 35 is fixed to the end of the transmission shaft 13. A driving shaft 36 is rotatably connected to the frame 1, and a multiple worm 34 meshing with the corresponding worm gears 35 is connected in series to the driving shaft 36. A first motor 37 that can drive the driving shaft 36 to rotate is installed on the frame 1. Start the first motor 37 to drive the driving shaft 36 to rotate, and drive the corresponding worm gears 35 to rotate through the multiple worm gears 34, and then drive the rubber pressing rollers 11 to rotate through the transmission shaft 13, and the multiple rubber pressing rollers 11 and the rubber pressing plate 12 cooperate to extrude evenly.

[0033] A pair of release tape guide rollers 9 are also installed on the frame 1 below the release tape roll 4, and a glue dispensing mechanism is installed between the pair of release tape guide rollers 9. The glue dispensing mechanism includes a glue dispensing box 10 fixedly installed on the top of the frame 1, a circular sealing cover 23 is fixed at the bottom of the glue dispensing box 10, and a glue dispensing disk 27 is rotatably connected in the circular sealing cover 23. The circumferential side wall of the glue dispensing disk 27 is provided with a plurality of glue grooves 24, and a glue cavity 20 is provided in the top of the glue dispensing box 10, and a lower portion 24 is provided at the bottom of the glue cavity 20, which is connected to the top of the circular sealing cover 23. A glue hose 22, a glue injection hose 21 is provided on the top of the glue cavity 20, a glue blowing assembly is installed in the middle of the glue dispensing disk 27, a glue dispensing port 29 adapted to the glue groove 24 is provided at the bottom of the circular sealing cover 23, a second motor 30 is installed on the front side of the glue dispensing box 10, and the output end of the second motor 30 is fixedly connected to the front side of the glue dispensing disk 27, the glue injection hose 21 injects glue into the glue cavity 20, and then injects the glue into the glue groove 24 at the top through the lower glue hose 22 to fill it, and the glue dispensing disk 27 rotates continuously to fill multiple glue grooves 24 in turn.

[0034] Specifically, the glue blowing assembly includes a groove 31 arranged on the rear side of the middle part of the glue dispensing disk 27, and a blowing pipe 26 extending into the groove 31 is fixed to the rear side of the glue dispensing box 10, and a docking joint 28 is provided at the bottom of the extended end of the blowing pipe 26. A plurality of docking pipes 25 connecting the glue groove 24 and the groove 31 are provided in the inner circumference of the glue dispensing disk 27, and a sealing ring adapted to the air inlet end of the docking pipe 25 is installed at the end of the docking joint 28. When the glue groove 24 rotates to the corresponding glue dispensing port 29 at the bottom, the blowing pipe 26 blows air, and at this time, the docking joint 28 docks with the docking pipe 25 rotated to the bottom, and is sealed by the sealing ring, so that air can be blown into the glue groove 24 to quickly blow out the glue and apply it to the surface of the release tape, and multiple glue points can be continuously applied at intervals on the release tape.

[0035] The unwinding roller 2 is hollow and is internally provided with an extension component which can be connected to the tail end of the packaging bag roll 3 or the release tape roll 4. The extension component is used to deliver the packaging bag and the tail end of the release tape to the pasting component. The extension component includes a unwinding shaft 19 which is rotatably connected to the unwinding roller 2. An extension tape 18 is wound on the unwinding shaft 19. The end of the extension tape 18 is bonded to the tail end of the packaging bag or the release tape. A winding spring is installed at the end of the unwinding shaft 19. After the packaging bag or the tail end of the release tape is bonded to the end of the extension tape 18, when the packaging bag roll 3 and the release tape roll 4 are unwound, the tail end of the packaging bag will pull the extension tape 18, and the extension tape 18 can be released by the unwinding shaft 19, so that the tail section of the packaging bag and the tail section of the release tape can continue to be transported to the pasting component in a taut and flat state, so as to avoid waste of the tail section. After pasting is completed, the cylinder is started to drive the slitting knife to move down to cut the bonding part of the extension tape 18, and the unwinding shaft 19 is wound up under the action of the winding spring for next use.

[0036] Furthermore, limiting edges 15 are fixed on both sides of the unwinding roller 2, and limiting grooves matching the limiting edges 15 are provided on both sides of the winding drum in the center of the packaging bag roll 3 and the release tape roll 4. A strip hole 17 is provided on the top of the winding drum for inserting the tail end of the packaging bag or the release tape, and a strip opening 16 corresponding to the strip hole 17 is provided on the top of the unwinding roller 2. The front end of the unwinding roller 2 is open. In the process of assembling the packaging bag roll 3 and the release tape roll 4, it is only necessary to put the winding drum on the unwinding roller 2, and insert the limiting edges 15 on both sides into the corresponding limiting grooves, so that the packaging bag roll 3 and the release tape roll 4 can rotate synchronously with the unwinding roller 2.

[0037] A slitting assembly 38 is also installed on the left side of the pasting assembly. The slitting assembly 38 includes a tool holder fixedly installed on the frame 1, on which a cylinder and a slitting knife connected thereto are installed, and a knife holder is installed below the tool holder. After pasting is completed, the cylinder is started to drive the slitting knife to move down to cut the bonding point of the extension belt 18.

[0038] Multiple pairs of traction belts 14 can clamp the packaging bag at intervals so that the packaging bag is conveyed in a flat state with uniform force, and can then synchronously pull the packaging bag and the release tape so that they pass through the pasting assembly in a flat and taut state, and the release tape is pasted to the bag opening of the packaging bag with glue, and then multiple glue pressing rollers 11 and glue pressing plates 12 cooperate to extrude the tape evenly, thereby realizing a continuous pasting process with high pasting efficiency. Before the pasting assembly works, air is injected into the air distribution pipe 33 through the air injection pipe 32, and then injected into the annular extrusion air cushion 8 through the air distribution pipe to expand it. The position of the annular extrusion air cushion 8 corresponds to the position of the release tape and the bag opening, providing uniform extrusion force, and accurately pasting the release tape to the bag opening with glue.

[0039] In the process of putting the packaging bag roll 3 and the release tape roll 4 on, it is only necessary to put the winding drum on the unwinding roller 2, and insert the limiting edges 15 on both sides into the corresponding limiting grooves, so that the packaging bag roll 3 and the release tape roll 4 can rotate synchronously with the unwinding roller 2. The tail end of the packaging bag roll 3 passes through the strip hole 17 on the winding drum. After the packaging, the tail end of the passed packaging bag enters the hollow unwinding roller 2 through the strip opening 16. Double-sided tape is pasted on the end of the wound extension tape 18 in advance. After the packaging, the packaging bag or The tail end of the release tape is bonded to the end of the extension tape 18. When the packaging bag roll 3 and the release tape roll 4 are unwound, the tail end of the packaging bag will pull the extension tape 18, and the extension tape 18 can be released by the unwinding shaft 19, so that the tail section of the packaging bag and the tail section of the release tape can continue to be conveyed to the pasting component in a taut and flat state, avoiding waste of the tail section. After pasting is completed, the cylinder is started to drive the slitting knife to move down and cut the bonding part of the extension tape 18, and the unwinding shaft 19 is reeled up under the action of the winding spring for next use.

[0040] The glue injection tube 21 injects glue into the glue cavity 20, and then the glue is injected into the glue groove 24 rotated to the top through the lower glue tube 22 to fill it. The glue dispensing plate 27 rotates continuously to fill multiple glue grooves 24 in turn. When the glue groove 24 rotates to the corresponding glue dispensing port 29 at the bottom, the air blowing tube 26 blows air. At this time, the docking joint 28 is docked with the docking tube 25 rotated to the bottom. Through the sealing ring, air can be blown into the glue groove 24 to quickly blow out the glue and apply it to the surface of the release tape. Multiple glue points can be continuously applied at intervals on the release tape. After extrusion and pasting, they can spread to the surrounding area, thereby greatly saving the amount of glue while meeting the bonding effect.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for sticking adhesive tape on a packaging bag, comprising a frame (1), characterized in that: The left end and the top of the frame (1) are both rotatably connected to an unwinding roller (2), the left end unwinding roller (2) is fitted with a packaging bag roll (3), and the top unwinding roller (2) is fitted with a release tape roll (4). The frame (1) is sequentially equipped with a plurality of packaging bag guide rollers (5), a pasting assembly, a plurality of glue pressing rollers (11) and a plurality of pairs of traction belts (14) from left to right. The pasting assembly comprises an upper pasting roller (7) and a lower pasting roller (6). The front end side wall of the upper pasting roller (7) is embedded with an annular extrusion air cushion (8) that cooperates with the lower pasting roller (6). ), a plurality of glue pressing rollers (11) are provided below a glue pressing plate (12) that cooperates with the glue pressing rollers, a pair of release tape guide rollers (9) are provided on the frame (1) below the release tape roll (4), a glue dispensing mechanism is provided between the pair of release tape guide rollers (9), the unwinding roller (2) is hollow, and an extension component that can be connected to the tail end of the packaging bag roll (3) or the release tape roll (4) is provided inside, the extension component is used to deliver the packaging bag and the tail end of the release tape to the pasting component, and a slitting component (38) is also provided on the left side of the pasting component.

2. A device for sticking adhesive tape on a packaging bag according to claim 1, characterized in that: The extension component comprises an unwinding shaft (19) rotatably connected to the unwinding roller (2), an extension belt (18) being wound on the unwinding shaft (19), the end of the extension belt (18) being bonded to the tail end of the packaging bag or the release belt, and a coil spring being mounted on the end of the unwinding shaft (19).

3. The device for sticking the bag opening tape of a packaging bag according to claim 1, characterized in that: Limiting edges (15) are fixed on both sides of the unwinding roller (2); limiting grooves adapted to the limiting edges (15) are provided on both sides of the winding drum at the center of the packaging bag roll (3) and the release tape roll (4); a strip hole (17) is provided on the top of the winding drum for inserting the tail end of the packaging bag or the release tape; a strip opening (16) corresponding to the strip hole (17) is provided on the top of the unwinding roller (2); and the front end of the unwinding roller (2) is open.

4. The device for sticking the bag opening tape of a packaging bag according to claim 1, characterized in that: An air distribution pipe (33) extending therein is fixed to the front end of the upper pasting roller (7), and a plurality of connecting pipes connected to the annular extrusion air cushion (8) are circumferentially distributed at the extended end of the air distribution pipe (33), and the front end of the air distribution pipe (33) is connected to the air injection pipe (32) via a rotating joint.

5. The device for sticking the bag opening tape of a packaging bag according to claim 1, characterized in that: The slitting assembly (38) comprises a knife holder fixedly mounted on a frame (1), a cylinder and a slitting knife connected thereto being mounted on the knife holder, and a knife seat being mounted below the knife holder.

6. The device for sticking the bag opening tape of a packaging bag according to claim 1, characterized in that: A plurality of pairs of traction belts (14) are arranged in parallel in the transverse direction, and the pasted packaging bags are conveyed by the plurality of pairs of traction belts (14) through the contact.

7. The device for sticking the bag opening tape of a packaging bag according to claim 1, characterized in that: The frame (1) is rotatably connected to a plurality of transmission shafts (13) which are connected one by one to a plurality of rubber pressing rollers (11); a worm gear (35) is fixed to the end of the transmission shaft (13); a driving shaft (36) is rotatably connected to the frame (1); a plurality of worms (34) which mesh with corresponding worm gears (35) are connected in series to the driving shaft (36); and a first motor (37) which can drive the driving shaft (36) to rotate is installed on the frame (1).

8. The device for sticking the bag opening tape of a packaging bag according to claim 1, characterized in that: The glue dispensing mechanism comprises a glue dispensing box (10) fixedly mounted on the top of a frame (1); a circular sealing cover (23) is fixedly mounted on the bottom of the glue dispensing box (10); a glue dispensing disk (27) is rotatably connected inside the circular sealing cover (23); a plurality of glue grooves (24) are arranged on the circumferential side wall of the glue dispensing disk (27); a glue cavity (20) is arranged inside the top of the glue dispensing box (10); a lower glue pipe (22) communicating with the top of the circular sealing cover (23) is arranged at the bottom of the glue cavity (20); a glue injection pipe (21) is arranged at the top of the glue cavity (20); a glue blowing assembly is installed in the middle of the glue dispensing disk (27); and a glue dispensing port (29) adapted to the glue groove (24) is arranged at the bottom of the circular sealing cover (23).

9. The device for sticking the bag opening tape of a packaging bag according to claim 8, characterized in that: A second motor (30) is installed on the front side of the glue dispensing box (10), and an output end of the second motor (30) is fixedly connected to the front side of the glue dispensing plate (27).

10. The device for sticking the bag opening tape of a packaging bag according to claim 8, characterized in that: The glue blowing assembly comprises a groove (31) arranged at the rear side of the middle of the glue dispensing plate (27); a blow pipe (26) extending into the groove (31) is fixed on the rear side of the glue dispensing box (10); a docking joint (28) is provided at the bottom of the extended end of the blow pipe (26); a plurality of docking pipes (25) connecting the glue groove (24) and the groove (31) are provided in the circumferential direction of the glue dispensing plate (27); a sealing ring adapted to the air inlet end of the docking pipe (25) is installed at the end of the docking joint (28).

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