Packaging box side wing folding mechanism of packaging machine

Abstract

The utility model provides a packaging box side wing folding mechanism of a packaging machine, and belongs to the technical field of packaging machines. The problem that an existing packaging machine is insufficient in working reliability is solved. The packaging machine comprises a conveying belt used for positioning and conveying a packaging box and a material pushing part used for pushing a product into the packaging box, the side wing folding mechanism of the packaging box comprises a wing folding assembly arranged on the outer side of the conveying belt, the wing folding assembly comprises a swing strip and a fixing strip which are correspondingly arranged, and the fixing strip is in a long strip shape arranged in the front-back direction of the conveying belt. The swing strips are located behind the fixing strips and can swing front and back, folding wing assemblies are arranged on the two sides of the conveying belt, the rear ends of the fixing strips of the two folding wing assemblies are arranged in a staggered mode in the front-back direction of the conveying belt, and the material pushing part and the fixing strip with the front rear end in the two fixing strips are located on the same side of the conveying belt and located behind the corresponding swing strips. The material pushing piece and the rear end of the other fixing strip are correspondingly arranged in the left-right direction of the conveying belt. The flank folding mechanism improves the working reliability of the packaging machine.

Description

Technical Field

[0001] This utility model belongs to the field of packaging machine technology and relates to a packaging box folding wing mechanism for a packaging machine. Background Technology

[0002] A rubber tube is a container used to store adhesive, typically made of aluminum or plastic. When filling the tube, the sealed end faces downwards, and the open end faces upwards; the adhesive is poured in from the end. After the adhesive is filled, the end of the tube is folded multiple times to create a seal, or heat-sealed. For example, a glue filling machine disclosed in Chinese patent literature [publication number: CN207843487U] uses a push rod to eject the tube from bottom to top after the end is sealed. The tube is then placed into a packaging box.

[0003] The packaging box for rubber hoses is generally a cardboard box, consisting of a rectangular box body with four side walls: an upper and lower side wall defined by length and width, and a front and rear side wall defined by length and height. A right cover plate is located at the right end of the upper side wall, and a left cover plate is located at the left end of the lower side wall. The right cover plate has a lower latch, and the left cover plate has an upper latch. The left and right ends of the front side wall have front left and front right wings, respectively, and the left and right ends of the rear side wall have rear left and rear right wings, respectively. After the rubber hose is placed in the packaging box, the front left and rear left wings are bent towards the left opening of the box body, and the front and rear right wings are bent towards the right opening of the box body. Then, the left and right cover plates are bent to cover the openings at both ends of the box body, and the lower and upper latches are inserted into the box body.

[0004] Existing packaging machines, such as the highly integrated fully automatic packaging production equipment disclosed in Chinese patent literature [publication number: CN115959349A], include a frame and a feeding mechanism, a box-loading mechanism, a box-suction mechanism, a box-feeding mechanism, a pushing mechanism, a box-pressing mechanism, a pre-folding flap mechanism, and a flap-insertion mechanism mounted on the frame. The feeding mechanism conveys the product to be packaged from the loading port to the discharge port. The box-loading mechanism stacks packaging boxes. The box-suction mechanism sucks up the packaging boxes from the box-loading mechanism and conveys them to the box-feeding mechanism. The box-feeding mechanism conveys the packaging boxes from the box-loading port to the box-down port. The pushing mechanism pushes the product to be packaged at the discharge port into the packaging box at the box-loading port. The box-feeding mechanism includes two opposing conveyor frames, each with a rotatable conveying component. The conveying components on the two frames jointly carry and convey the packaging box. Each conveying component has several limiting components arranged sequentially, including a first limiting member and a second limiting member, with the space between the first and second limiting members used to accommodate the packaging box. When the packaged item is pushed into the packaging box at the upper box port, the pre-folding tongue mechanism bends the side tongue of the packaging box. When the packaging box on the feeding box mechanism is transported to the folding tongue insertion mechanism, the folding tongue insertion mechanism can fold and insert the large tongues on both sides of the packaging box.

[0005] When the above-mentioned packaging machine is working, the product to be packaged is first pushed into the packaging box at the upper box port, and then the side tongue is bent. After that, the large tongue is folded and inserted. When the product to be packaged is pushed into the packaging box from one end, since both ends of the packaging box are open, the product to be packaged is easy to slide out or partially slide out from the other end of the packaging box due to inertia. This results in the packaging box having no product or the product being stuck on the packaging machine because it has partially slid out. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a packaging box folding wing mechanism for a packaging machine, thereby solving the technical problem of how to improve the reliability of the packaging machine.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A packaging box folding wing mechanism for a packaging machine. The packaging machine includes a conveyor belt for positioning and conveying packaging boxes and a pusher for pushing products into the packaging boxes. The packaging box folding wing mechanism includes folding wing components disposed on the outside of the conveyor belt. The folding wing components include corresponding swing bars and fixed bars. The fixed bars are elongated strips arranged along the front-back direction of the conveyor belt. The swing bars are located behind the fixed bars and can swing back and forth. The folding wing components are disposed on both sides of the conveyor belt, and the rear ends of the fixed bars of the two folding wing components are staggered in the front-back direction of the conveyor belt. The pusher and the front fixed bar of the two fixed bars are located on the same side of the conveyor belt and behind the corresponding swing bar. The pusher and the rear end of the other fixed bar are also correspondingly disposed in the left-right direction of the conveyor belt.

[0009] The conveyor belt transports the packaging boxes from back to front. The upper and lower sidewalls of the packaging box are pulled open to form a cuboid shape. The four wing plates and two cover plates are in an unfolded state. The packaging box is placed horizontally and positioned on the conveyor belt, with the left and right ends of the packaging box located on the left and right sides of the conveyor belt. The lower sidewall of the packaging box is at the bottom, and the upper sidewall of the packaging box is at the top. Because the rear ends of the fixing bars of the two folding wing assemblies are staggered in the front-to-back direction of the conveyor belt, and the pusher and the front fixing bar of the two fixing bars are located on the same side of the conveyor belt and behind the front swing bar, and are correspondingly set with the rear end of the other fixing bar in the left-to-right direction of the conveyor belt, taking the rear end of the left fixing bar as an example, when the packaging machine is working, the swing bar swings backward, causing the swing end of the swing bar to move away from the fixing bar. The packaging box is conveyed forward with the conveyor belt. The front left wing plate of the packaging box first touches the rear end of the fixing bar located on the left side of the conveyor belt, and folds backward under the limiting action of the rear end of the fixing bar. Then the left swing bar swings forward, and the swing end of the swing bar contacts the rear left wing plate of the packaging box, pushing the rear left wing plate of the packaging box forward. At this point, the right end of the packaging box is still open. The pusher can then push the product into the packaging box from the right end. A retaining strip on the left end of the box limits the product, preventing it from sliding out. As the conveyor belt continues to move, the two left-side wings of the packaging box remain folded and are held in place by the retaining strip. The front right wing of the packaging box touches the rear end of the retaining strip on the right side of the conveyor belt and folds backward under the limiting action of the retaining strip. Then, the right-side swinging strip swings forward, its swinging end contacting the rear right wing of the packaging box and pushing it forward. The conveyor belt continues to move forward, and the two right-side wings of the packaging box remain folded and held in place by the right-side retaining strip, allowing it to proceed to the next process. In this way, the product will not slide out of the packaging box when pushed in, improving the reliability of the packaging machine.

[0010] In the packaging box folding wing mechanism of the above-mentioned packaging machine, fixed swing seats are provided on both sides of the conveyor belt, and a rotating shaft is vertically inserted on the swing seat. The connecting end of the swing bar is fixedly connected to the upper end of the rotating shaft, and the lower end of the rotating shaft is connected to the driving component.

[0011] The drive unit is connected to the packaging machine's control system. When the front left and right wing plates of the packaging box on the conveyor belt contact the rear ends of the two fixed strips, the drive unit drives the rotating shaft to rotate. The rotating shaft drives the swing strips to swing forward, causing the swing ends of the two swing strips to fold the rear left and rear right wing plates respectively. After the rear left and rear right wing plates are pressed down by the two fixed strips, the drive unit drives the rotating shaft to rotate in the opposite direction, causing the swing strips to swing backward, preparing for the folding operation of the next packaging box. This enables automatic folding operation and improves work efficiency.

[0012] In the packaging box folding side wing mechanism of the above-mentioned packaging machine, the driving component is a motor. Fixed seats and driving seats are provided on both sides of the conveyor belt. The fixed seats and driving seats are located in front of the swing seat and the fixed seats are located between the driving seats and the swing seat. A cam connected to the motor is provided on the driving seat, and a swing rod is hinged on the driving seat. A roller is fixed on the swing rod. The cam is located in front of the swing rod and the profile surface of the cam abuts against the outer surface of the roller. A crank is fixedly connected to the lower end of the rotating shaft. A pull rod is connected between the swing rod and the crank. A tension spring is connected between the crank and the fixed seat.

[0013] The tension of the spring keeps the cam's profile surface in contact with the outer surface of the roller. The motor drives the cam to rotate, and the cam, against the roller, drives the rocker arm to swing. The rocker arm, through a connecting rod and crank, drives the oscillating bar to swing. Because the cam's profile surface has a protrusion and a base circle, the protrusion drives the oscillating bar to swing when it abuts the roller, while the base circle remains stationary when it abuts the roller. This allows the oscillating bar to swing intermittently. When the swinging end of the oscillating bar is far from the rear end of the fixed bar and remains stationary, the left and right rear wings of the packaging box on the conveyor belt can smoothly pass the position of the oscillating bar to reach the front of it, enabling the left and right rear wings of the packaging box to smoothly complete their forward folding action, improving work efficiency and ensuring the reliability of the packaging machine.

[0014] In the packaging box folding wing mechanism of the above-mentioned packaging machine, an installation block is sleeved and fixed on the upper end of the rotating shaft. A strip-shaped installation groove is opened on the side of the installation block. The connecting end of the swing bar is embedded in the installation groove. The swing bar and the installation block are fixedly connected by connecting bolts. A strip-shaped connecting hole is opened on the swing bar and is parallel to the installation groove. The connecting bolt passes through the connecting hole.

[0015] The position of the swing bar can be adjusted. When adjusting, loosen the connecting bolt, and then slide the swing bar in the installation groove. The connecting bolt will slide in the connecting hole, thereby changing the position of the swing end of the swing bar relative to the rotating shaft. After adjusting the swing bar to the appropriate position, tighten the connecting bolt. Therefore, this setting makes it convenient to adjust the position of the swing bar.

[0016] In the folding side wing mechanism of the packaging box of the above-mentioned packaging machine, the fixed seat is in a "C" shape. The fixed seat includes a lower horizontal part, an upper horizontal part, and a vertical part located between the upper horizontal part and the lower horizontal part. A middle horizontal plate is also provided between the upper horizontal part and the lower horizontal part. The fixed strip is fixedly connected to the middle horizontal plate. An adjusting rod is inserted through and axially fixed on the upper horizontal part. The adjusting rod passes through the middle horizontal plate and is threadedly connected to the middle horizontal plate. A strip-shaped hole is provided on the vertical part along the vertical direction. The middle horizontal plate has a positioning convex block that is inserted into the strip-shaped hole and can slide along the strip-shaped hole.

[0017] When rotating the adjusting rod, the middle horizontal plate can slide up and down in the strip-shaped hole under the drive of the adjusting rod. In this way, the fixed strip fixed on the middle horizontal plate moves up and down synchronously, thereby adjusting the position of the fixed strip and making it convenient to adjust the position of the fixed strip.

[0018] In the folding side wing mechanism of the packaging box of the above-mentioned packaging machine, the rear end of the fixed strip is bent outward relative to the conveyor belt. The swing end of the swing bar is bent forward to make the swing bar in an "L" shape, and the swing end of the swing bar can swing to the inside of the rear end of the fixed strip. In this way, the folding side wing operation can be smoothly completed through the rear end of the fixed strip and the swing end of the swing bar, improving the reliability and stability of the operation of the packaging machine.

[0019] Compared with the prior art, the present utility model has the following advantages:

[0020] Long strip-shaped fixed strips and swing bars that can swing back and forth are provided on both sides of the conveyor belt. The rear ends of the fixed strips are bent outward relative to the conveyor belt. The swing ends of the swing bars are bent forward. The rear ends of the fixed strips of the two folding wing components are staggered in the front-back direction of the conveyor belt. The pusher is on the same side of the conveyor belt as the fixed strip with the front part of the middle and rear parts of the two fixed strips and is behind the corresponding swing bar. The pusher is also correspondingly arranged with the rear end of the other fixed strip in the left-right direction of the conveyor belt. In this way, the product will not slide out of the packaging box when being pushed into the packaging box, improving the reliability of the operation of the packaging machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural schematic diagram of the folding side wing mechanism of the packaging box of this packaging machine in cooperation with the box feeding mechanism.

[0022] Figure 2 is Figure 1 an enlarged view of part A in

[0023] Figure 3 This is a schematic diagram of the working process of the left folding wing assembly in the folding wing mechanism of the packaging box of this packaging machine.

[0024] In the diagram, 1. Conveyor belt; 2. Folding wing assembly; 2a. Swing bar; 2a1. Swing end; 2a2. Connecting end; 2a3. Connecting hole; 2b. Fixing bar; 2c. Rotating shaft; 2d. Cam; 2e. Swing rod; 2f. Roller; 2g. Crank; 2h. Pull rod; 2i. Tension spring; 2j. Mounting block; 2j1. Mounting groove; 2k. Connecting bolt; 2m. Middle horizontal plate; 2m1. Positioning protrusion; 2n. Adjusting rod; 2p. Middle plate; 3. Swing seat; 4. Fixing seat; 4a. Lower horizontal part; 4b. Upper horizontal part; 4c. Vertical and longitudinal parts; 4c1. Strip hole; 5. Drive seat; 6. Drive component; 7. Feeding rack; 8. Lifting plate; 9. Box pressing rod; 10. Packaging box; 11. Pushing component; 12. Product. Detailed Implementation

[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0026] Example 1

[0027] like Figure 1 As shown, a packaging box folding wing mechanism for a packaging machine is used in conjunction with the box feeding mechanism and the pushing mechanism of the packaging machine. The box feeding mechanism includes a feeding frame 7, on which a horizontally arranged conveyor belt 1 for positioning and conveying packaging boxes 10 is mounted. The conveyor belt 1 has several limiting plates, which are arranged sequentially along the length of the conveyor belt 1. The pushing mechanism includes a pushing component 11, on which a cylinder or other drive source capable of linear motion is connected.

[0028] like Figure 1 and Figure 2As shown, the packaging box folding wing mechanism includes two folding wing assemblies 2 respectively disposed on both sides of the conveyor belt 1. Each folding wing assembly 2 includes a swing bar 2a and a fixed bar 2b arranged sequentially from back to front along the conveying direction of the conveyor belt 1. The swing bar 2a can swing back and forth, while the fixed bar 2b is fixedly disposed. The fixed bar 2b is a long strip disposed along the conveying direction of the conveyor belt 1, and its rear end is bent outward relative to the conveyor belt 1. The swing end 2a1 of the swing bar 2a is bent forward to make the swing bar 2a form an "L" shape, and the swing end 2a1 of the swing bar 2a can swing to the inside of the rear end of the fixed bar 2b. The rear ends of the fixed bars 2b of the two folding wing assemblies 2 are staggered in the front-back direction of the conveyor belt 1. The pusher 11 is located on the same side of the conveyor belt 1 as the fixed bar 2b with the forward rear end and is located behind the corresponding swing bar 2a. The pusher 11 is also correspondingly disposed with the rear end of the other fixed bar 2b in the left-right direction of the conveyor belt 1. Both sides of the conveyor belt 1 are equipped with fixed swing seats 3. A rotating shaft 2c is vertically inserted through the swing seat 3. A bearing is installed between the rotating shaft 2c and the swing seat 3. The connecting end 2a2 of the swing bar 2a is fixedly connected to the upper end of the rotating shaft 2c. The lower end of the rotating shaft 2c is connected to the drive component 6. The drive component 6 is a motor. Both sides of the conveyor belt 1 are equipped with fixed seats 4 and drive seats 5. Both fixed seats 4 and drive seats 5 are located in front of the swing seats 3, with the fixed seat 4 located between the drive seat 5 and the swing seat 3. A cam 2d connected to the motor is installed on the drive seat 5. The cam 2d is located above the drive seat 5, and its rotation axis passes downward through the drive seat 5 and connects to the motor. A rocker arm 2e is hinged to the drive seat 5. The rocker arm 2e is located above the drive seat 5, with one end of the rocker arm 2e hinged to the drive seat 5. A roller 2f is fixed in the middle of the rocker arm 2e. The cam 2d is located in front of the rocker arm 2e, and the profile surface of the cam 2d abuts against the outer surface of the roller 2f. A crank 2g is fixedly connected to the lower end of the rotating shaft 2c, and a pull rod 2h is connected between the rocker arm 2e and the crank 2g. The other end of the rocker arm 2e is hinged to the front end of the pull rod 2h, and the crank 2g is hinged to the rear end of the pull rod 2h. A tension spring 2i is connected between the crank 2g and the fixed seat 4. The swing seat 3, the fixed seat 4, and the drive seat 5 are all fixedly connected to the feeding frame 7 of the box feeding mechanism.

[0029] like Figure 2As shown, an installation block 2j is sleeved and fixed on the upper end of the rotating shaft 2c. A strip-shaped installation groove 2j1 is formed on the side surface of the installation block 2j. The connecting end 2a2 of the swing bar 2a is embedded into the installation groove 2j1. The swing bar 2a and the installation block 2j are fixedly connected by a connecting bolt 2k. A strip-shaped connecting hole 2a3 parallel to the installation groove 2j1 is formed on the swing bar 2a, and the connecting bolt 2k is inserted into the connecting hole 2a3. The fixed seat 4 is in a "C" shape and includes a lower cross part 4a, an upper cross part 4b, and a vertical part 4c located between the upper cross part 4b and the lower cross part 4a. A middle cross plate 2m is further arranged between the upper cross part 4b and the lower cross part 4a. The fixed strip 2b is fixedly connected with the middle cross plate 2m. An adjusting rod 2n is inserted through and axially fixed on the upper cross part 4b. The adjusting rod 2n passes through the middle cross plate 2m and is threadedly connected with the middle cross plate 2m. A strip-shaped hole 4c1 arranged vertically is formed on the vertical part 4c. The middle cross plate 2m has a positioning convex block 2m1 inserted into the strip-shaped hole 4c1 and capable of sliding along the strip-shaped hole 4c1. In order to make the middle cross plate 2m fixed stably, a locking screw can be threadedly connected to the positioning convex block 2m1. When the locking screw is tightened, the head of the locking screw abuts against the vertical part 4c. When the locking screw is loosened, the positioning convex block 2m1 can slide in the strip-shaped hole 4c1. A bearing is arranged between the adjusting rod 2n and the upper cross part 4b. A top cap is installed and fixed on the top of the adjusting rod 2n, facilitating the rotation operation of the adjusting rod 2n. The inner end of the lower cross part 4a protrudes from the upper cross part 4b and is fixedly connected with the feeding rack 7. An L-shaped intermediate plate 2p is fixedly connected between the middle cross plate 2m and the fixed strip 2b. The intermediate plate 2p and the fixed strip 2b can be fixedly connected by welding or bolts. The intermediate arrangement facilitates the installation of the fixed strip 2b. Positioning columns are fixed on both the lower cross part 4a and the crank 2g. Two ends of a tension spring 2i are respectively fixed on the two positioning columns. The swing bar 2a arranged on the right side of the conveyor belt 1 is in front of another swing bar 2a. On the right side of the conveyor belt 1 and behind the swing bar 2a, a lifting plate 8 is arranged. The lifting plate 8 is arranged higher than the fixed strip 2b and the swing bar 2a. The rear end of the lifting plate 8 is bent downward. When the packaging box passes through the lifting plate 8, the right cover plate is located above the lifting plate 8, and the front right wing plate and the rear right wing plate are located below the lifting plate 8. In order to prevent the packaging box 10 on the conveyor belt 1 from moving upward, two并排的压盒杆9 are further arranged above the conveyor belt 1. The压盒杆9 are fixedly connected to the feeding rack 7 through brackets. The packaging box 10 is conveyed below the压盒杆9.

[0030] As Figure 1 and Figure 3 It should be noted that there is an unclear expression "并排的压盒杆9" in the original text. It might need to be further clarified for a more accurate translation.As shown, when the packaging box 10 is loaded, the rectangular packaging box is positioned between two adjacent limiting members, with both ends of the box extending beyond the limiting members. After the upper and lower side walls of the packaging box 10 are opened, it forms a rectangular shape, with all four wing plates and two cover plates in an open, unfolded state. The conveyor belt 1 transports the packaging box 10 from back to front. The packaging box 10 is placed horizontally and positioned on the conveyor belt 1, with its left and right ends located on the left and right sides of the conveyor belt 1. The lower side wall of the packaging box 10 is at the bottom, and the upper side wall of the packaging box 10 is at the top. At this time, the left cover plate is at the bottom, and the right cover plate is at the top. The swing bar 2a swings backward, causing its swing end 2a1 to move away from the fixed bar 2b. The packaging box 10 is conveyed forward with the conveyor belt 1. The front left wing plate of the packaging box 10 first touches the rear end of the fixed bar 2b located on the left side of the conveyor belt 1, and folds backward under the limiting action of the rear end of the fixed bar 2b. Then, the left swing bar 2a swings forward, and its swing end 2a1 contacts the rear left wing plate of the packaging box 10, pushing the rear left wing plate of the packaging box 10 to fold forward. At this time, the right end of the packaging box 10 is still in an open state, and the right cover plate is located above the lifting plate 8 and is limited by the lifting plate 8. The rubber tube can be pushed in from the right end of the packaging box 10 by the pusher 11. The product 12, i.e., the tube, is inserted into the packaging box 10. As the conveyor belt 1 continues to move the product, the two folded-back wings of the packaging box 10 are held in place by the fixing strip 2b on the left side. The front right wing of the packaging box 10 touches the rear end of the fixing strip 2b on the right side of the conveyor belt 1 and folds backward under the limiting action of the rear end of the fixing strip 2b. Then, the right-side swing strip 2a swings forward, and the swing end 2a1 of the swing strip 2a contacts the rear right wing of the packaging box 10, pushing the rear right wing of the packaging box 10 forward. The conveyor belt 1 continues to move forward, and the two folded-back wings of the packaging box 10 are held in place by the fixing strip 2b on the right side, allowing it to proceed to the next process. The product 12, i.e., the tube, will not slip out of the packaging box 10 when pushed in, improving the reliability of the packaging machine.

[0031] Example 2

[0032] In this embodiment, the crank 2g, tension spring 2i, pull rod 2h, rocker arm 2e, cam 2d and motor are not provided. The driving component 6 is a rotary cylinder. The rotating shaft of the rotary cylinder is directly fixedly connected to the lower end of the rotating shaft 2c. Other structures are the same as in Embodiment 1.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A packaging box folding wing mechanism for a packaging machine, the packaging machine comprising a conveyor belt (1) for positioning and conveying a packaging box (10) and a pusher (11) for pushing a product (12) into the packaging box (10), the packaging box folding wing mechanism comprising a folding wing assembly (2) disposed outside the conveyor belt (1), the folding wing assembly (2) comprising a swing bar (2a) and a fixed bar (2b) disposed correspondingly, the fixed bar (2b) being a long strip disposed along the front-back direction of the conveyor belt (1), the swing bar (2a) being located behind the fixed bar (2b) and capable of swinging back and forth, characterized in that, On both sides of the conveyor belt (1), the folding wing assemblies (2) are provided, and the rear ends of the fixing bars (2b) of the two folding wing assemblies (2) are staggered in the front-back direction of the conveyor belt (1). The pusher (11) is located on the same side of the conveyor belt (1) as the fixing bar (2b) with the rear end being closer to the front among the two fixing bars (2b) and behind the corresponding swinging bar (2a), and the pusher (11) is also correspondingly arranged with the rear end of the other fixing bar (2b) in the left-right direction of the conveyor belt (1).

2. The packaging box folding wing mechanism of the packaging machine according to claim 1, characterized in that, Fixed swinging seats (3) are provided on both sides of the conveyor belt (1). A rotating shaft (2c) is vertically penetrated through the swinging seat (3). The connecting end (2a2) of the swinging bar (2a) is fixedly connected to the upper end of the rotating shaft (2c), and the lower end of the rotating shaft (2c) is connected to the driving member (6).

3. The packaging box folding wing mechanism of the packaging machine according to claim 2, characterized in that, The driving member (6) is a motor. Fixed fixing seats (4) and driving seats (5) are provided on both sides of the conveyor belt (1). The fixing seats (4) and the driving seats (5) are both located in front of the swinging seats (3), and the fixing seat (4) is located between the driving seat (5) and the swinging seat (3). A cam (2d) connected to the motor is provided on the driving seat (5), and a swing rod (2e) is hinged on the driving seat (5). A roller (2f) is fixed on the swing rod (2e). The cam (2d) is located in front of the swing rod (2e), and the contour surface of the cam (2d) abuts against the outer side surface of the roller (2f). The lower end of the rotating shaft (2c) is fixedly connected to a crank (2g). A pull rod (2h) is connected between the swing rod (2e) and the crank (2g). A tension spring (2i) is connected between the crank (2g) and the fixing seat (4).

4. The packaging box folding wing mechanism of the packaging machine according to claim 2 or 3, characterized in that, An installation block (2j) is sleeved and fixed on the upper end of the rotating shaft (2c). A strip-shaped installation groove (2j1) is formed on the side surface of the installation block (2j). The connecting end (2a2) of the swinging bar (2a) is embedded into the installation groove (2j1). The swinging bar (2a) and the installation block (2j) are fixedly connected through a connecting bolt (2k). A strip-shaped connecting hole (2a3) parallel to the installation groove (2j1) is formed on the swinging bar (2a), and the connecting bolt (2k) is penetrated through the connecting hole (2a3).

5. The packaging box folding wing mechanism of the packaging machine according to claim 3, characterized in that, The fixing seat (4) is in a "C" shape. The fixing seat (4) includes a lower horizontal part (4a), an upper horizontal part (4b), and a vertical part (4c) located between the upper horizontal part (4b) and the lower horizontal part (4a). A middle horizontal plate (autogenerated tag: 2m) is further provided between the upper horizontal part (4b) and the lower horizontal part (4a). The fixing bar (2b) is fixedly connected to the middle horizontal plate (2m). An adjusting rod (2n) is penetrated through and axially fixed on the upper horizontal part (4b). The adjusting rod (2n) passes through the middle horizontal plate (2m) and is threadedly connected to the middle horizontal plate (2m). A strip-shaped hole (4c1) arranged vertically is formed on the vertical part (4c). A positioning convex block (2m1) inserted into the strip-shaped hole (4c1) and capable of sliding along the strip-shaped hole (4c1) is provided on the middle horizontal plate (2m).

6. The packaging box folding wing mechanism of the packaging machine according to claim 1 or 2, characterized in that, The rear end of the fixed strip (2b) is bent outward relative to the conveyor belt (1), and the swing end (2a1) of the swing strip (2a) is bent forward so that the swing strip (2a) is in an "L" shape, and the swing end (2a1) of the swing strip (2a) can swing to the inside of the rear end of the fixed strip (2b).

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