Bonding and welting device for packaging box

Abstract

The utility model belongs to the technical field of packaging box production, and particularly relates to a packaging box bonding and welting device which comprises a workbench, and a conveying belt is installed on the workbench. A fixing frame is fixedly connected to the top of the workbench, and a second fixing plate is fixedly connected to one side wall of the fixing frame. The first electromagnetic block and the second electromagnetic block are started and magnetically attracted, so that the first electromagnetic block moves upwards to be attracted to the second electromagnetic block, the first electromagnetic block drives the sliding block and the lifting roller to move upwards, the free end of the adhesive tape roll penetrates through the lifting roller and the fixed roller, and the packaging box is bonded through the adhesive tape roll. The free end of the adhesive tape roll is cut through the cutting knife, after cutting is completed, the first electromagnetic block and the second electromagnetic block are not electrified any more, under the action of gravity and the elastic force of the spring, the lifting roller rapidly descends and is tightly attached to the fixed roller, the free end of the adhesive tape roll is fixed, and the free end of the adhesive tape roll is prevented from being attached to the adhesive tape roll under the action of inertia and viscidity.

Description

Technical Field

[0001] This utility model belongs to the field of packaging box production technology, specifically a packaging box bonding and edge attaching device. Background Technology

[0002] Packaging boxes are box-shaped containers used to hold, protect, and display goods. During the production process, to enhance the structural strength and stability of the packaging box, its edges are usually glued together. This gluing ensures that the packaging box is not easily deformed or damaged during transportation and handling, while also providing better moisture and dust protection.

[0003] A Chinese patent with publication number CN221562395U discloses a packaging box bonding and edge-sealing device, including a worktable. A support frame is provided in the middle of the upper surface of the worktable, and a guide rod is provided in the middle of the support frame. The guide rod is movably connected to the bonding rod. A limit groove is opened in the upper part of the worktable, and a slide rod is provided inside the limit groove. A motor is fixedly installed on the top of the inner wall of the worktable. When the motor is started, the output end of the motor rotates, which in turn drives the track, which in turn rotates the slide rod, causing the packaging box to be bonded to move along the direction of the guide rod, so that it abuts against the tape roll, and bonding begins from the front side. Then, the bonding rod is pushed to rotate to bond the top. When the packaging box to be bonded moves to separate from the tape roll, the bonding rod quickly springs back to the vertical direction under the action of a torsion spring and bonds the rear end. When the rebound reaches a certain position, the tape is cut by the saw teeth to complete the bonding.

[0004] In current technology, after bonding, the tape needs to be cut with a serrated edge. However, the tape has a certain stickiness, and the free end of the tape easily sticks to the tape roll. This causes the tape end to fail to automatically bond to the next packaging box when it is delivered, requiring the free end of the tape to be manually torn off, thus reducing the production efficiency of the packaging boxes.

[0005] Therefore, a packaging box bonding and edge-sealing device is proposed to address the above problems. Utility Model Content

[0006] To overcome the shortcomings of existing technologies and solve the problem that the free end of the tape easily sticks to the tape roll and cannot automatically adhere to the packaging box, a packaging box bonding and edge-sealing device is proposed.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The packaging box bonding and edge-sealing device of this utility model includes a workbench, on which a conveyor belt is installed; a fixed frame is fixedly connected to the top of the workbench, a second fixed plate is fixedly connected to one side wall of the fixed frame, a connecting block is fixedly connected to the bottom of the second fixed plate, and a crossbar is rotatably connected to the connecting block; a first vertical plate is fixedly connected to one end of the crossbar; a roller is rotatably connected to the bottom end of the first vertical plate; a first motor is provided at one end of the roller, and a roll of adhesive tape is sleeved on the roller; A side plate is fixedly connected to the side wall of the first vertical plate, and two rectangular plates are fixedly connected to the bottom of the side plate; each rectangular plate has an opening, and a sliding rod is fixedly connected to each opening; a slider is slidably connected to each sliding rod; a first electromagnetic block is fixedly connected to the top of each slider; a second electromagnetic block is fixedly connected to the top inner wall of each opening; a first spring is sleeved on the outside of each sliding rod; the two ends of the first spring are respectively fixed to the top inner wall of the slider and the opening; a lifting roller is rotatably connected between the two sliders; a fixed roller is rotatably connected between the two rectangular plates.

[0008] Preferably, a first fixing plate is fixedly connected to the side wall of the fixing frame away from the second fixing plate, and a photoelectric sensor is fixedly connected to the bottom of the first fixing plate; a first electric push rod is fixedly connected to the top of the fixing frame, and a mounting frame is fixedly connected to the output end of the first electric push rod, with a pressure roller rotatably connected to the mounting frame; the first electric push rod is electrically connected to the photoelectric sensor.

[0009] Preferably, a gear is fixedly connected to one end of the crossbar near the first vertical plate, a second electric actuator is fixedly connected to the bottom of the second fixed plate, a rack is fixedly connected to the output end of the second electric actuator, the rack meshes with the gear, and the rack is slidably connected to the bottom of the second fixed plate.

[0010] Preferably, a third electric actuator is fixedly connected to the top of the side plate, and a blade holder is fixedly connected to the output end of the third electric actuator; a cutting blade is slidably connected inside the blade holder; two vertical rods are fixedly connected to the inner wall of the top of the blade holder, and the cutting blade is slidably connected to the two vertical rods; a second spring is sleeved on the outer side of each vertical rod, and the two ends of the second spring are respectively fixedly connected to the cutting blade and the blade holder; a second motor is fixedly connected to the blade holder, and a top plate is fixedly connected to the inner wall of the top of the blade holder; the output shaft of the second motor is rotatably connected to the top plate and has an elliptical block fixedly connected to it, and the outer wall of the elliptical block is in contact with the cutting blade.

[0011] Preferably, the bottom of the worktable has two base plates fixedly connected, and a bidirectional ball screw is rotatably connected between the two base plates via bearings. Two limiting plates are symmetrically threaded onto the bidirectional ball screw, and multiple rollers are rotatably connected to the inner sidewalls of each limiting plate. Two guide rods are fixedly connected between the two base plates, and the limiting plates are slidably connected to the limiting plates. A third motor is fixedly connected to the base plates, and the output shaft of the third motor is fixedly connected to one end of the bidirectional ball screw. The third motor is electrically connected to a photoelectric sensor.

[0012] Preferably, a second vertical plate is fitted onto the other end of the crossbar; the bottom end of the second vertical plate is fitted onto the other end of the scroll and is provided with fastening bolts.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a packaging box bonding and edge-sealing device. It comprises a first electromagnetic block, a second electromagnetic block, and a first spring. Activating the first and second electromagnetic blocks causes them to magnetically attract each other, causing the first electromagnet to move upwards and engage with the second electromagnet. The first electromagnetic block then drives a slider and a lifting roller to move upwards. The free end of the tape roll passes through the lifting roller and a fixed roller, bonding the packaging box together. A cutting blade cuts the free end of the tape roll. After cutting, the first and second electromagnetic blocks are no longer energized. Under the action of gravity and spring force, the lifting roller rapidly descends and tightly adheres to the fixed roller, fixing the free end of the tape roll and preventing it from sticking to the tape roll due to inertia and adhesion.

[0015] This utility model provides a packaging box bonding and edge-sealing device. By incorporating an elliptical block and a second spring, when cutting is required, a second motor is activated, and its output shaft drives the elliptical block to rotate. When the major axis of the elliptical block contacts the top of the cutting blade, the cutting blade extends from its holder. A third electric push rod is then activated, and its output end drives the holder and cutting blade downwards, rapidly cutting the tape roll. The holder then contacts the packaging box, simultaneously adhering one end of the tape roll to the side wall of the box. When the minor axis of the elliptical block contacts the top of the cutting blade, the cutting blade retracts into the holder under the action of the second spring. During the bonding process, the third electric push rod drives the holder to contact the top of the packaging box, smoothly adhering the tape to the top of the box. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a perspective view of the fixing frame in this utility model;

[0019] Figure 3 This is a perspective view of the second fixing plate in this utility model;

[0020] Figure 4 This is a perspective view of the tool holder in this utility model;

[0021] Figure 5 This is a three-dimensional view of the elliptical block in this utility model;

[0022] Figure 6 This is a perspective view of the limiting plate in this utility model;

[0023] Legend:

[0024] 1. Workbench; 11. Conveyor Belt; 2. Fixing Frame; 21. First Fixing Plate; 211. Photoelectric Sensor; 22. Second Fixing Plate; 221. First Vertical Plate; 222. Second Vertical Plate; 223. Connecting Block; 224. Fastening Bolt; 225. Tape Roll; 226. Reel; 227. First Motor; 228. Crossbar; 23. First Electric Actuator; 231. Mounting Frame; 232. Pressure Roller; 24. Gear; 241. Rack; 242. Second Electric Actuator; 25. Side Plate; 251. 252. Rectangular plate; 253. Fixed roller; 254. First spring; 255. Sliding rod; 256. Sliding block; 257. First electromagnetic block; 258. Second electromagnetic block; 259. Lifting roller; 2006. Blade holder; 260. Third electric push rod; 261. Cutting blade; 262. Vertical rod; 263. Second spring; 264. Second motor; 265. Elliptical block; 266. Top plate; 37. Limiting plate; 38. Rotating roller; 39. Bottom plate; 30. Guide rod; 31. Bidirectional ball screw; 32. Third motor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Specific implementation examples are given below.

[0027] Please see Figure 1 - Figure 6This utility model provides a packaging box bonding and edge-sealing device, including a workbench 1, on which a conveyor belt 11 is installed; a fixing frame 2 is fixedly connected to the top of the workbench 1, a second fixing plate 22 is fixedly connected to one side wall of the fixing frame 2, a connecting block 223 is fixedly connected to the bottom of the second fixing plate 22, and a crossbar 228 is rotatably connected to the connecting block 223; a first vertical plate 221 is fixedly connected to one end of the crossbar 228; a roller 226 is rotatably connected to the bottom end of the first vertical plate 221; a first motor 227 is provided at one end of the roller 226, and a roll of adhesive tape 225 is sleeved on the roller 226; a first motor 227 is provided at one end of the roller 226, and a roll of adhesive tape 225 is sleeved on the roller 226; a first motor 227 is fixedly connected to the side wall of the first vertical plate 221, and a second fixing plate 222 is fixedly connected to the first vertical plate 221. Side plate 25, with two rectangular plates 251 fixedly connected to its bottom; each rectangular plate 251 has an opening, and a sliding rod 254 is fixedly connected to each opening; a slider 255 is slidably connected to each sliding rod 254; a first electromagnetic block 256 is fixedly connected to the top of each slider 255; a second electromagnetic block 257 is fixedly connected to the inner top wall of each opening; a first spring 253 is sleeved on the outer side of each sliding rod 254; the two ends of the first spring 253 are respectively fixed to the slider 255 and the inner top wall of the opening; a lifting roller 258 is rotatably connected between the two sliders 255; a fixed roller 252 is rotatably connected between the two rectangular plates 251.

[0028] During operation, the tape roll 225 is first fitted onto the reel 226 and then fixed in place. To prevent the free end of the tape roll 225 from sticking to the adhesive during bonding, the first electromagnetic block 256 and the second electromagnetic block 257 are activated, causing them to magnetically attract each other. This allows the first electromagnet to move upwards and engage with the second electromagnet. The first electromagnetic block 256 then drives the slider 255 and the lifting roller 258 to move upwards, allowing the free end of the tape roll 225 to pass through the lifting roller 258. 58 and fixed roller 252, the packaging box is glued by tape roll 225. The free end of tape roll 225 is cut by cutting blade 262. After cutting, the first electromagnetic block 256 and the second electromagnetic block 257 are no longer energized. Under the action of gravity and spring force, lifting roller 258 descends rapidly and fits tightly with fixed roller 252, fixing the free end of tape roll 225 and preventing the free end of tape roll 225 from sticking to tape roll 225 under the action of inertia and adhesion.

[0029] Furthermore, such as Figure 2 As shown, a first fixing plate 21 is fixedly connected to the side wall of the fixing frame 2 away from the second fixing plate 22, and a photoelectric sensor 211 is fixedly connected to the bottom of the first fixing plate 21; a first electric push rod 23 is fixedly connected to the top of the fixing frame 2, and a mounting frame 231 is fixedly connected to the output end of the first electric push rod 23, and a pressure roller 232 is rotatably connected to the mounting frame 231; the first electric push rod 23 is electrically connected to the photoelectric sensor 211.

[0030] During operation, a photoelectric sensor 211 is set to monitor the position of the packaging box. When the packaging box passes the photoelectric sensor 211, the photoelectric sensor 211 energizes the first electric push rod 23. The output end of the first electric push rod 23 drives the mounting frame 231 and the pressure roller 232 to move. The pressure roller 232 presses down on the folded packaging box to flatten packaging boxes of different heights and prevent the folded edges of the packaging box from curling up and the adhesion from being uneven.

[0031] Furthermore, such as Figure 3 As shown, a gear 24 is fixedly connected to one end of the crossbar 228 near the first vertical plate 221, and a second electric actuator 242 is fixedly connected to the bottom of the second fixed plate 22. A rack 241 is fixedly connected to the output end of the second electric actuator 242. The rack 241 meshes with the gear 24, and the rack 241 is slidably connected to the bottom of the second fixed plate 22.

[0032] During operation, the height of the packaging boxes varies, so the height of the tape roll 225 needs to be adjusted during bonding. By activating the second electric actuator 242, the output end of the second electric actuator 242 drives the rack 241 to move, the rack 241 drives the gear 24 to rotate, the gear 24 drives the crossbar 228 to rotate, and the crossbar 228 drives the second vertical plate 222 and the tape roll 225 to rotate circumferentially, thereby realizing the function of adjusting the height of the tape roll 225.

[0033] Furthermore, such as Figure 4 and Figure 5 As shown, a third electric actuator 261 is fixedly connected to the top of the side plate 25, and a blade holder 26 is fixedly connected to the output end of the third electric actuator 261; a cutting blade 262 is slidably connected inside the blade holder 26; two vertical rods 263 are fixedly connected to the inner wall of the top of the blade holder 26, and the cutting blade 262 is slidably connected to the two vertical rods 263; a second spring 264 is sleeved on the outer side of each vertical rod 263, and the two ends of the second spring 264 are fixedly connected to the cutting blade 262 and the blade holder 26, respectively; a second motor 265 is fixedly connected to the blade holder 26, and a top plate 267 is fixedly connected to the inner wall of the top of the blade holder 26; the output shaft of the second motor 265 is rotatably connected to the top plate 267, and an elliptical block 266 is fixedly connected thereto, and the outer wall of the elliptical block 266 is in contact with the cutting blade 262.

[0034] During operation, when cutting is required, the second motor 265 is turned on, and the output shaft of the second motor 265 drives the elliptical block 266 to rotate. When the long half-axis of the elliptical block 266 contacts the top of the cutting blade 262, the cutting blade 262 extends out of the blade holder 26. By turning on the third electric push rod 261, the output end of the third electric push rod 261 drives the blade holder 26 and the cutting blade 262 to move downward, quickly cutting the tape roll 225. The blade holder 26 contacts the packaging box, and at the same time, it will adhere one end of the tape roll 225 to the side wall of the packaging box. When the short half-axis of the elliptical block 266 contacts the top of the cutting blade 262, under the action of the second spring 264, the cutting blade 262 retracts into the blade holder 26. During the bonding process, under the action of the third electric push rod 261, the blade holder 26 is driven to contact the top of the packaging box, and the tape will be flatly adhered to the top of the packaging box.

[0035] Furthermore, such as Figure 6 As shown, the bottom of the workbench 1 is fixedly connected to two base plates 32, and a bidirectional ball screw 34 is rotatably connected between the two base plates 32 via bearings. Two limiting plates 3 are symmetrically threaded onto the bidirectional ball screw 34, and multiple rotating rollers 31 are rotatably connected to the inner sidewalls of each limiting plate 3. Two guide rods 33 are fixedly connected between the two base plates 32, and the limiting plates 3 are slidably connected to each limiting plate 3. A third motor 35 is fixedly connected to the base plate 32, and the output shaft of the third motor 35 is fixedly connected to one end of the bidirectional ball screw 34. The third motor 35 is electrically connected to the photoelectric sensor 211.

[0036] During operation, the photoelectric sensor 211 detects the packaging box and simultaneously activates the third motor 35. The output shaft of the third motor 35 drives the bidirectional ball screw 34 to rotate, which in turn drives the limiting plate 3 to move. The limiting plate 3 slides on the two guide rods 33 until the packaging box is limited between the two rotating rollers 31, thus achieving the function of limiting the packaging box.

[0037] Furthermore, such as Figure 3 As shown, the other end of the crossbar 228 is fitted with a second vertical plate 222; the bottom end of the second vertical plate 222 is fitted onto the other end of the scroll 226 and is provided with a fastening bolt 224.

[0038] When installing tape roll 225, the tape roll 225 is placed on the roller 226, and then the second vertical plate 222 is rotated to one side of the roller 226 and fixed by the fastening bolt 224, so as to realize the function of quick installation of tape roll 225.

[0039] Working principle: First, tape roll 225 is placed on the roller 226. Then, tape roll 225 is fixed by fastening bolt 224. By activating the first electromagnetic block 256 and the second electromagnetic block 257, they are magnetically attracted, causing the first electromagnet to move upward and engage with the second electromagnet. The first electromagnetic block 256 drives the slider 255 and the lifting roller 258 to move upward. The free end of tape roll 225 passes through the lifting roller 258 and the fixed roller 252, and the packaging box is glued by tape roll 225. The free end of tape roll 225 is cut by cutting blade 262. After cutting, the first electromagnetic block 256 and the second electromagnetic block 257 are no longer energized. Under the action of gravity and spring force, lifting roller 258 descends rapidly and fits tightly with fixed roller 252, fixing the free end of tape roll 225 and preventing the free end of tape roll 225 from sticking to tape roll 225 under the action of inertia and adhesion.

[0040] When the packaging box passes the photoelectric sensor 211, the photoelectric sensor 211 energizes the first electric push rod 23. The output end of the first electric push rod 23 drives the mounting frame 231 and the pressure roller 232 to move. The pressure roller 232 presses down on the folded packaging box to flatten packaging boxes of different heights. When the photoelectric sensor 211 detects the packaging box, it will turn on the third motor 35. The output shaft of the third motor 35 drives the bidirectional ball screw 34 to rotate. The bidirectional ball screw 34 drives the limiting plate 3 to move. The limiting plate 3 slides on the two guide rods 33 until the packaging box is limited between the rotating rollers 31 on both sides, thus realizing the function of limiting the packaging box.

[0041] Since the packaging boxes have different heights, the height of the tape roll 225 needs to be adjusted during bonding. This is achieved by activating the second electric actuator 242, whose output drives the rack 241, which in turn drives the gear 24 to rotate. The gear 24 then drives the crossbar 228 to rotate, which in turn drives the second vertical plate 222 and the tape roll 225 to rotate circumferentially, thus adjusting the height of the tape roll 225. When cutting is required, the second motor 265 is activated, whose output shaft drives the elliptical block 266 to rotate. When the major semi-axis of the elliptical block 266 contacts the top of the cutting blade 262, cutting begins. The blade 262 extends out of the blade holder 26. By activating the third electric actuator 261, the output end of the third electric actuator 261 drives the blade holder 26 and the cutting blade 262 to move downward, quickly cutting the tape roll 225. The blade holder 26 contacts the packaging box, and at the same time, it will adhere one end of the tape roll 225 to the side wall of the packaging box. When the short half-axis of the elliptical block 266 contacts the top of the cutting blade 262, under the action of the second spring 264, the cutting blade 262 retracts into the blade holder 26. During the bonding process, under the action of the third electric actuator 261, the blade holder 26 is driven to contact the top of the packaging box, and the tape will be flatly adhered to the top of the packaging box.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A packaging box bonding and edge-sealing device, comprising a workbench (1), on which a conveyor belt (11) is installed; a fixing frame (2) is fixedly connected to the top of the workbench (1), and a second fixing plate (22) is fixedly connected to one side wall of the fixing frame (2), characterized in that: A connecting block (223) is fixedly connected to the bottom of the second fixed plate (22), and a crossbar (228) is rotatably connected to the connecting block (223); a first vertical plate (221) is fixedly connected to one end of the crossbar (228); a roller (226) is rotatably connected to the bottom end of the first vertical plate (221); a first motor (227) is provided at one end of the roller (226), and a tape roll (225) is sleeved on the roller (226); a side plate (25) is fixedly connected to the side wall of the first vertical plate (221), and two rectangular plates (251) are fixedly connected to the bottom of the side plate (25); each of the rectangular plates (251) has an opening There is a passage, and a slide rod (254) is fixedly connected inside each passage; a slider (255) is slidably connected to each slide rod (254); a first electromagnetic block (256) is fixedly connected to the top of each slider (255); a second electromagnetic block (257) is fixedly connected to the inner wall of the top of each passage; a first spring (253) is sleeved on the outside of each slide rod (254); the two ends of the first spring (253) are respectively fixed to the slider (255) and the inner wall of the top of the passage; a lifting roller (258) is rotatably connected between two sliders (255); a fixed roller (252) is rotatably connected between two rectangular plates (251).

2. The packaging box bonding and edge-sealing device according to claim 1, characterized in that: A first fixing plate (21) is fixedly connected to the side wall of the fixing frame (2) away from the second fixing plate (22), and a photoelectric sensor (211) is fixedly connected to the bottom of the first fixing plate (21); a first electric push rod (23) is fixedly connected to the top of the fixing frame (2), and a mounting frame (231) is fixedly connected to the output end of the first electric push rod (23), and a pressure roller (232) is rotatably connected to the mounting frame (231); the first electric push rod (23) is electrically connected to the photoelectric sensor (211).

3. The packaging box bonding and edge-sealing device according to claim 2, characterized in that: A gear (24) is fixedly connected to one end of the crossbar (228) near the first vertical plate (221). A second electric actuator (242) is fixedly connected to the bottom of the second fixed plate (22). A rack (241) is fixedly connected to the output end of the second electric actuator (242). The rack (241) meshes with the gear (24). The rack (241) is slidably connected to the bottom of the second fixed plate (22).

4. The packaging box bonding and edge-sealing device according to claim 3, characterized in that: A third electric actuator (261) is fixedly connected to the top of the side plate (25), and a blade holder (26) is fixedly connected to the output end of the third electric actuator (261); a cutting blade (262) is slidably connected inside the blade holder (26); two vertical rods (263) are fixedly connected to the inner wall of the top of the blade holder (26), and the cutting blade (262) is slidably connected to the two vertical rods (263). A second spring (264) is sleeved on the outer side of each vertical rod (263). The two ends of the second spring (264) are fixed to the cutting blade (262) and the blade holder (26), respectively; a second motor (265) is fixed to the blade holder (26), and a top plate (267) is fixed to the inner top wall of the blade holder (26); the output shaft of the second motor (265) is rotatably connected to the top plate (267) and is fixed to an elliptical block (266), the outer side wall of the elliptical block (266) is in contact with the cutting blade (262).

5. The packaging box bonding and edge-sealing device according to claim 4, characterized in that: The bottom of the workbench (1) is fixedly connected to two base plates (32), and a bidirectional ball screw (34) is rotatably connected between the two base plates (32) through bearings. Two limiting plates (3) are symmetrically threaded on the bidirectional ball screw (34), and multiple rollers (31) are rotatably connected to the inner sidewall of each limiting plate (3). Two guide rods (33) are fixedly connected between the two base plates (32), and the limiting plates (3) are slidably connected to each limiting plate (3). A third motor (35) is fixedly connected to the base plate (32), and the output shaft of the third motor (35) is fixedly connected to one end of the bidirectional ball screw (34). The third motor (35) is electrically connected to the photoelectric sensor (211).

6. The packaging box bonding and edge-sealing device according to claim 5, characterized in that: The other end of the crossbar (228) is fitted with a second vertical plate (222); the bottom end of the second vertical plate (222) is fitted on the other end of the scroll (226) and is provided with a fastening bolt (224).

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