Transmission mechanism of packaging machine

Abstract

The transmission mechanism of the packaging machine comprises a support, a folding and sealing assembly, a box pushing assembly and a driving assembly, the folding and sealing assembly comprises an upper folding and sealing unit and a lower folding and sealing unit which are oppositely arranged, the upper folding and sealing unit is arranged above the lower folding and sealing unit, and the upper folding and sealing unit and the lower folding and sealing unit can move back and forth in the first direction; the box pushing assembly comprises a box blocking plate, a box jacking unit and a box pushing unit. The driving assembly is installed on the support. In the process that the driving assembly drives the box pushing assembly to push the to-be-packaged box body to the folding and sealing assembly in the second direction, the upper folding and sealing unit and the lower folding and sealing unit are driven to be away from each other in the first direction; when the driving assembly drives the box pushing assembly to return in the second direction, the upper folding and sealing unit and the lower folding and sealing unit are driven to get close to each other in the first direction. The transmission device can ingeniously replace a traditional transmission mode adopting a speed reducer and a shaft chain wheel chain, is high in transmission efficiency and easy to maintain, and enables equipment to run more stably, the running speed is high, and maintenance is easy.

Description

Technical Field

[0001] The invention relates to the technical field of packaging equipment, and in particular to a transmission mechanism of a packaging machine. Background Art

[0002] In a commercial society, companies strive to make their product packaging more beautiful and high-end in order to promote their products. Usually, a transparent packaging film is added to the outer surface of the square packaging box. For example, the outer packaging of electronic products, food, cosmetics, and medical supplies all require a packaging bag to prevent moisture, scratches, or improve appearance.

[0003] In the process of film packaging using a packaging machine, first wrap the packaging film on the box to be packaged (refer to Figure 1 ), then the lower folding and sealing mechanism is moved upward to fold the lower folding edge of the packaging film, and the upper folding and sealing mechanism is moved downward to fold the upper folding edge of the packaging film, so that the upper folding edge and the lower folding edge of the packaging film are attached to each other, and finally the upper folding edge and the lower folding edge of the packaging film are ironed, so that the packaging film can be fixed on the box body. However, in the current packaging machine, most of the transmission mechanisms of the upper folding and sealing mechanisms and the lower folding and sealing mechanisms use their own motors and reducers, and the transmission between the mechanisms is mainly driven by chains and belts. This not only has many parts, resulting in a complex transmission mechanism and cumbersome maintenance, but also has low transmission efficiency and high noise. Summary of the invention

[0004] In order to solve the above technical problem or at least partially solve the above technical problem, the present application provides a transmission mechanism of a packaging machine.

[0005] The present application provides a transmission mechanism of a packaging machine, comprising:

[0006] A bracket having a first direction and a second direction perpendicular to each other;

[0007] A folding and sealing assembly, comprising an upper folding and sealing unit and a lower folding and sealing unit which are slidably connected to the bracket and arranged opposite to each other, wherein the upper folding and sealing unit is arranged above the lower folding and sealing unit, and both the upper folding and sealing unit and the lower folding and sealing unit can move back and forth along the first direction;

[0008] A box pusher assembly, which is arranged on one side of the bracket;

[0009] A driving assembly is mounted on the bracket; wherein, when the driving assembly drives the box pushing assembly to push the box body to be packaged toward the folding and sealing assembly along the second direction, the upper folding and sealing unit and the lower folding and sealing unit are driven away from each other along the first direction; when the driving assembly drives the box pushing assembly to return along the second direction, the upper folding and sealing plate and the lower folding and sealing plate are driven toward each other along the first direction.

[0010] In a possible implementation, the lower folding and sealing unit includes a lower folding and sealing plate, a first connecting plate, and a first slide plate which are sequentially arranged from top to bottom, the lower folding and sealing plate, the first connecting plate, and the first slide plate are located on the same side of the bracket and can slide on the back side of the bracket along the first direction, the lower folding and sealing plate is connected to the upper end of the first connecting plate, the lower end of the first connecting plate is connected to the first slide plate via a first anti-stuck material protection component, and the first slide plate is transmission-connected to the driving component;

[0011] Wherein, when the lower folding sealing plate is blocked by the box body, the first anti-stuck material protection component is disconnected to disconnect the first sliding plate from the first connecting plate.

[0012] In a possible implementation, the first anti-stuck material protection component includes a first connecting strip, a first limiting rod and two first limiting blocks, the two first limiting blocks are symmetrically arranged on the back of the first slide plate, and a through first plug-in space is formed between the two first limiting blocks, the first limiting rod crosses the first plug-in space, and a first elastic member is provided on a portion of the first limiting rod outside the first plug-in space, the first elastic member abuts against the first limiting block, one end of the first connecting strip is connected to the first connecting plate, and the other end is plugged into the first plug-in space;

[0013] The lower part of the first plug-in space is a first circular cavity, and the end of the first connecting strip inserted into the first plug-in space is provided with a first limiting portion, and the first limiting portion is adapted to the first circular cavity.

[0014] In a possible embodiment, the lower folding and sealing unit also includes a power assembly, which includes a power piece, a rotating rod and a movable plate. The rotating rod is rotatably connected to the back side of the first connecting plate and is arranged along a first direction. The movable plate is located on the rear side of the first connecting plate and is slidably connected to the rotating rod. The movable plate passes through the first connecting plate and is connected to the lower folding and sealing plate. The power piece is installed on the first connecting plate, and the output shaft of the power piece is connected to one end of the rotating rod. The power piece is used to drive the rotating rod to rotate to drive the movable plate to move along the first direction, so as to drive the lower folding and sealing plate to move back and forth.

[0015] In a possible embodiment, the upper folding and sealing unit includes a lifting frame, an upper folding and sealing plate, a second connecting plate and a second slide plate which are arranged in sequence from top to bottom, the upper folding and sealing plate is installed in the middle of the lifting frame and extends toward the lower folding and sealing unit, the lifting frame is connected to both ends of the second connecting plate, the second connecting plate and the second slide plate are located on the same side of the bracket and can slide on the front side of the bracket along the first direction, and the second connecting plate is connected to the second slide plate through a second anti-stuck material protection component, and the second slide plate is transmission-connected to the driving component;

[0016] Wherein, when the upper folding sealing plate is blocked by the box body, the second material preventing component is disconnected so that the second sliding plate is disconnected from the second connecting plate.

[0017] In a possible implementation, the second anti-stuck material protection assembly includes a second connecting strip, a second limiting rod and two second limiting blocks, the two second limiting blocks are symmetrically arranged on the back side of the second connecting plate, and a through second plug-in space is formed between the two second limiting blocks, the second limiting rod crosses the second plug-in space, and a second elastic member is provided on a portion of the second limiting rod outside the second plug-in space, the second elastic member abuts against the second limiting block, one end of the second connecting strip is connected to the second sliding plate, and the other end is plugged into the second plug-in space;

[0018] The lower part of the second plug-in space is a second circular cavity, and the end of the second connecting strip inserted into the second plug-in space is provided with a second limiting portion, and the second limiting portion is adapted to the second circular cavity.

[0019] In a possible embodiment, the driving assembly includes a driving member, a transmission rod, and a first transmission unit, a second transmission unit, and a third transmission unit that are transmission-connected to the transmission rod, the transmission rod is rotatably connected to the bracket and is located on a side opposite to the box pushing mechanism, the first transmission unit is connected to the upper folding and sealing unit, the second transmission unit is connected to the lower folding and sealing unit, and the third transmission unit is connected to the box pushing assembly, the driving member is fixed to the bracket, and the output shaft of the driving member is connected to one end of the transmission rod for driving the transmission rod to rotate, so as to drive the first transmission unit, the second transmission unit, and the third transmission unit to swing.

[0020] In a possible embodiment, the first transmission unit and the second transmission unit have the same structure; wherein, the first transmission unit includes a connecting cam, a driving connecting rod and a rotating connecting rod, the connecting cam is sleeved on the transmission rod, one end of the driving connecting rod is connected to the connecting cam, and the other end is connected to one end of the rotating connecting rod, and the other end of the rotating connecting rod is connected to the upper folding and sealing unit.

[0021] In a possible embodiment, the box pushing assembly includes a box baffle plate, a box top unit and a box pushing unit, the box baffle plate is located in front of the box outlet end of the conveyor belt, and is used for blocking the box body on the conveyor belt; the box top unit is located between the box baffle plate and the box outlet end of the conveyor belt, and is used for lifting the box body blocked by the box baffle plate upwards so that the lower surface of the box body is flush with the top surface of the box baffle plate; the box pushing unit includes a box pushing member and a connecting beam connected to the box pushing member, the connecting beam is located on the outer side of the box baffle plate, one end of the connecting beam is connected to the third transmission unit, the box pushing member is located above the conveyor belt and arranged along the second direction, and the box pushing member is connected to one end of the connecting beam close to the box pushing member, so that under the drive of the connecting beam, the box pushing member approaches or moves away from the box baffle plate.

[0022] In a possible embodiment, the third transmission unit includes a swing arm, a connecting rod and an adapter seat, one end of the connecting rod is connected to one end of the transmission rod, and the other end is connected to the swing arm, one end of the swing arm is connected to the connecting beam, and the other end is hinged to the adapter seat.

[0023] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0024] The transmission mechanism of the packaging machine uses the driving assembly to simultaneously drive the upper folding and sealing unit, the lower folding and sealing unit and the box pushing assembly to operate synchronously. It has good synchronization and can cleverly replace the traditional transmission method of the reducer and the shaft sprocket chain. It has high transmission efficiency and simple maintenance. At the same time, it also makes the operation of the equipment more stable, the operation speed is fast and the maintenance is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of a box body wrapped with a packaging film;

[0026] Figure 2 It is a schematic structural diagram of a transmission mechanism of a packaging machine according to an embodiment of the present invention;

[0027] Figure 3 is a structural schematic diagram of a transmission mechanism of a packaging machine according to an embodiment of the present invention from another perspective;

[0028] Figure 4It is an exploded schematic diagram of a transmission mechanism of a packaging machine according to an embodiment of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the connection between a lower folding and sealing unit and a second transmission unit in a transmission mechanism of a packaging machine according to an embodiment of the present invention;

[0030] Figure 6 yes Figure 5 The enlarged schematic diagram of point A in the middle;

[0031] Figure 7 It is a structural schematic diagram of the connection between an upper folding and sealing unit and a first transmission unit in a transmission mechanism of a packaging machine according to an embodiment of the present invention;

[0032] Figure 8 yes Figure 7 The enlarged schematic diagram of point B in the middle;

[0033] Fig. 9 It is a structural schematic diagram of a driving component in a transmission mechanism of a packaging machine according to an embodiment of the present invention;

[0034] Fig.10 It is a structural schematic diagram of a top box assembly in a transmission mechanism of a packaging machine according to an embodiment of the present invention;

[0035] Fig.11 It is a structural schematic diagram of a box pushing assembly in a transmission mechanism of a packaging machine according to an embodiment of the present invention;

[0036] Fig.12 The present invention is a schematic diagram of the structure of a baffle in a transmission mechanism of a packaging machine according to an embodiment of the present invention.

[0037] Figure Number:

[0038] 10. Bracket; 11. Side plate; 12. Mounting plate; 20. Folding assembly; 21. Upper folding unit; 211. Upper folding plate; 212. Lifting frame; 213. Second connecting plate; 214. Second sliding plate; 215. Second anti-stuck material protection assembly; 2151. Second limiting block; 2152. Second limiting rod; 2153. Second connecting strip; 2153a. Second limiting part; 2154. Second elastic member; 22. Lower folding unit; 221. Lower folding plate; 222, first connecting plate; 223, first slide plate; 224, first anti-stuck material protection assembly; 2241, first limit block; 2242, first limit rod; 2243, first connecting strip; 2243a, first limit portion; 2244, first elastic member; 225, power assembly; 2251, power member; 2252, rotating rod; 2253, moving plate; 30, box push assembly; 31, box stop plate; 31a, perforation; 32, top box unit; 3 21. Top box plate; 322. Vertical bar; 323. Driving motor; 324. Fixed seat; 325. Second slide rail; 326. Second slider; 33. Box pusher unit; 331. Connecting beam; 332. Box pusher; 333. Support frame; 334. First slide rail; 335. First slider; 40. Driving assembly; 41. Driving member; 42. Transmission rod; 43. First transmission unit; 431. First connecting cam; 432. First driving connecting rod; 433. First A rotating connecting rod; 44, a second transmission unit; 441, a first connecting cam; 442, a first driving connecting rod; 443, a first rotating connecting rod; 45, a third transmission unit; 451, a connecting rod; 452, a swing arm; 453, an adapter; 50, a third slide rail; 60, a third slider; 70, a first sensor; 80, a fourth slide rail; 90, a fourth slider; 100, a second sensor; 110, a stopper; 120, a contact member; 130, a contact sensing member. DETAILED DESCRIPTION

[0039] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0040] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0041] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0042] like Figures 2 to 11 As shown, a transmission mechanism of a packaging machine according to an embodiment of the present invention comprises a bracket 10 , a folding and sealing assembly 20 , a box pushing assembly 30 and a driving assembly 40 .

[0043] Specifically, the support 10 has a first direction and a second direction perpendicular to each other. The folding and sealing assembly 20 includes an upper folding and sealing unit 21 and a lower folding and sealing unit 22 which are slidably connected to the support 10 and are arranged opposite to each other. The upper folding and sealing unit 21 is arranged above the lower folding and sealing unit 22, and both the upper folding and sealing unit 21 and the lower folding and sealing unit 22 can move back and forth along the first direction so that the upper folding and sealing unit 21 and the lower folding and sealing unit 22 are close to or away from each other. The box pushing assembly 30 is arranged on one side of the support 10, and is used to push the box body to be packaged to the folding and sealing assembly 20 along the second direction for folding and sealing. The driving assembly 40 is installed on the support. Among them, when the driving assembly 40 drives the box pushing assembly 30 to push the box body to be packaged to the folding and sealing assembly along the second direction Y, the upper folding and sealing unit 21 and the lower folding and sealing unit 22 are driven to move away from each other along the first direction; when the driving assembly 40 drives the box pushing assembly to return along the second direction, the upper folding and sealing unit 21 and the lower folding and sealing unit 22 are driven to move close to each other along the first direction.

[0044] Here, it should be noted that the "first direction" and "second direction" mentioned above are fictitious for the purpose of describing the pushing direction of the upper folding sealing plate 211, the lower folding sealing plate 221 and the box body. The first direction may specifically refer to the height direction of the bracket 10, which can be referred to as Figure 1 The second direction may specifically refer to the width direction of the bracket 10, which can be referred to as Figure 1 in the Y direction.

[0045] Reference Figure 1 In the existing technology, after wrapping the packaging film on the surface of the box body, the upper folding edge and the lower folding edge of the packaging film need to be folded and sealed, so as to facilitate the subsequent heat sealing of the upper folding edge and the lower folding edge after bonding. To this end, the upper folding and sealing unit 21 of the present application is used to fold and seal the upper folding edge of the packaging film so that the upper folding edge of the packaging film is bonded to the side of the box body, and the lower folding and sealing unit 22 is used to fold and seal the lower folding edge of the packaging film so that the lower folding edge of the packaging film is bonded to the side of the box body. When the upper folding edge and the lower folding edge of the packaging film are folded and sealed, at this time, the upper folding edge of the packaging film at least partially overlaps with the lower folding edge, and then the overlapping part of the upper folding edge and the lower folding edge is heat-sealed by heat sealing, so as to wrap the packaging film on the outer surface of the box body.

[0046] Exemplarily, when it is necessary to fold and seal the upper and lower folding edges of the packaging film, it is necessary to drive the upper folding unit 21 and the lower folding unit 22 in opposite directions away from each other through the driving assembly according to the size of the box body, so that the distance between the upper folding unit 21 and the lower folding unit 22 is opened until the box body can pass through. At the same time, the driving assembly 40 drives the box pushing assembly 30 to push the box body to be packaged toward the folding assembly 20. After the front end of the box body is aligned with the upper folding unit 21 and the lower folding unit 22, the driving assembly 40 rotates to drive the box pushing assembly 30 to return to the initial position, and at the same time drives the upper folding unit 21 and the lower folding unit 22 to approach each other, so that the upper folding unit 21 and the lower folding unit 22 respectively fold and seal the upper and lower folding edges of the film packaging, thereby completing the packaging of a box body. That is to say, the driving component 40 synchronously drives the box pushing assembly 30, the upper folding and sealing unit 21 and the lower folding and sealing unit 22 to move. For example, in the process of driving the box pushing assembly 30 to push the box, the upper folding and sealing unit 21 and the lower folding and sealing unit 22 are synchronously driven to move in directions away from each other, which has good synchronization and can replace the existing reducer and shaft sprocket chain transmission method, so that the transmission efficiency is high and the maintenance is simple, and at the same time it also makes the operation of the equipment more stable and the operation speed is fast.

[0047] In addition, in the process of pushing the box body toward the folding and sealing assembly 20 by the box pushing assembly 30, the packaging film needs to fall from the perforation on the bracket 10 so that the packaging film is located in front of the box body. As the box pushing assembly 30 continues to push the box body, the packaging film is wrapped around the surface of the box body, thereby achieving coverage of the surface of the box body with the packaging film.

[0048] In the present application, the driving assembly 40 drives the box pushing assembly 30 to push the box body toward the folding and sealing assembly 20 along the second direction. During this process, the upper folding and sealing unit 21 and the lower folding and sealing unit 22 are driven to move away from each other along the first direction, so that the front end of the box body to be packaged is aligned with the upper folding and sealing unit 21 and the lower folding and sealing unit 22. After that, the driving assembly 40 drives the box pushing assembly 30 to return to the initial position along the second direction, and the upper folding and sealing unit 21 and the lower folding and sealing unit 22 are driven to move closer to each other along the first direction, so as to fold and seal the upper folding edge and the lower folding edge of the packaging film wrapped on the box body, respectively, so as to complete the packaging of a box body. In other words, the transmission mechanism of the packaging machine uses the driving assembly 40 to simultaneously drive the upper folding and sealing unit 21, the lower folding and sealing unit 22 and the box pushing assembly 30 to run synchronously, with good synchronization, and can also cleverly replace the traditional transmission method using a reducer and axle sprocket chain, with high transmission efficiency and simple maintenance, and at the same time, it also makes the operation of the equipment more stable, fast, and simple to maintain.

[0049] In a possible embodiment, the lower folding and sealing unit 22 includes a lower folding and sealing plate 221, a first connecting plate 222, and a first slide plate 223 which are sequentially arranged from top to bottom. The lower folding and sealing plate 221, the first connecting plate 222, and the first slide plate 223 are located on the same side of the bracket 10 and can slide along the first direction on the back of the bracket 10. The lower folding and sealing plate 221 is connected to the upper end of the first connecting plate 222, and the lower end of the first connecting plate 222 is connected to the first slide plate 223 through the first anti-jamming protection component 224. The first slide plate 223 is connected to the second transmission unit 43. When the lower folding and sealing plate 221 is blocked by the box body, the first anti-jamming protection component 224 is disconnected to disconnect the first slide plate 223 from the first connecting plate 222.

[0050] That is to say, since the first slide plate 223 is connected to the driving assembly through a transmission connection, and the first slide plate 223 is connected to the lower end of the first connecting plate 222 through the first anti-jamming protection assembly 224, the upper end of the first connecting plate 222 is connected to the lower folding and sealing plate 221, so that when the first slide plate 223 is pushed to slide along the first direction, it can further drive the first connecting plate 222 and the lower folding and sealing plate 221 to move along the first direction, thereby realizing the folding and sealing of the lower folding edge of the packaging film, without the need for manual folding and sealing, which is beneficial to reducing labor intensity and improving production efficiency.

[0051] In addition, the first slide plate 223 is connected to the lower end of the first connecting plate 222 through the first anti-jamming protection component 224, so that when the lower folding plate 221 is blocked by the box body, the first anti-jamming protection component 224 is switched from a connected state to a disconnected state, thereby disconnecting the connection between the first slide plate 223 and the first connecting plate 222, thereby ensuring that the lower folding plate will not continue to move and cause squeezing of the box body, thereby playing a certain protective role and preventing the box body from being damaged.

[0052] Exemplarily, a first sensor 70 is provided on the back side of the first slide plate 223. When the lower folding sealing plate 221 is blocked by the box body, the driving component 40 continues to drive the first slide plate 223 to slide in the first direction. Since the lower folding sealing plate 221 is blocked and cannot move upward, the first connecting plate 222 cannot continue to be driven to move upward, and then the first anti-jamming protection component 224 disconnects the first slide plate 223 from the first connecting plate 222, so that the first slide plate 223 continues to be driven to move upward until the first sensor 70 installed on the first slide plate 223 contacts the component on the first connecting plate 222. The first sensor 70 receives the sensing signal and transmits it to the controller, which then controls the shutdown and sends an alarm signal, thereby promptly reminding the staff to handle it.

[0053] Specifically, the first anti-stuck material protection assembly 224 includes a first connecting strip 2243, a first limiting rod 2242 and two first limiting blocks 2241, the two first limiting blocks 2241 are symmetrically arranged on the back of the first slide plate 223, and a through first plug-in space is formed between the two first limiting blocks 2241, the first limiting rod 2242 crosses the first plug-in space, and the first limiting rod 2242 is provided with a first elastic member 2244 at the part outside the first plug-in space, the first elastic member 2244 is in contact with the first limiting block 2241, one end of the first connecting strip 2243 is connected to the first connecting plate 222, and the other end is plugged into the first plug-in space. The lower part of the first plug-in space is a first circular cavity, and the end of the first connecting strip 2243 inserted into the first plug-in space is provided with a first limiting portion 2243a, and the first limiting portion 2243a is adapted to the first circular cavity.

[0054] That is to say, by symmetrically setting two first limit blocks 2241 at intervals on the back side of the first slide plate 223, connecting the first connecting strip 2243 to the first connecting plate 222, and inserting one end of the first connecting strip 2243 with the first limit portion 2243a into the first plug-in space, at this time, the first limit portion 2243a of the first connecting strip 2243 is inserted into the first circular cavity, and if the lower folding and sealing plate 221 performs normal folding and sealing on the packaging film (that is, the lower folding and sealing plate 221 is not blocked by the box body), the first connecting strip 2243 continues to be plugged into the first plug-in space, so that the first slide plate 223 and the first connecting plate 222 remain connected, allowing the first connecting plate 222 to follow The first slide plate 223 moves along with the movement of the first slide plate 223, thereby driving the lower folding plate 221 to move along the first direction to fold the lower folding edge of the packaging film; if the lower folding plate 221 is blocked by the box body and cannot be folded, the driving component continues to drive the first slide plate 223 to move, and the first connecting plate 222 cannot move due to being blocked, so that the first connecting strip 2243 moves relative to the first limit block 2241, and then the first connecting strip 2243 is disengaged from the first plug-in space, thereby disconnecting the first slide plate 223 from the first connecting plate 222, so that the lower folding plate will not continue to move and squeeze the box body, thereby preventing the box body from being damaged.

[0055] In a possible embodiment, the lower folding and sealing unit 22 also includes a power component 225, which includes a power piece 2251, a rotating rod 2252 and a movable plate 2253. The rotating rod 2252 is rotatably connected to the back side of the first connecting plate 222 and is arranged along the first direction. The movable plate 2253 is located on the rear side of the first connecting plate 222 and is slidably connected to the rotating rod 2252. The movable plate 2253 passes through the first connecting plate 222 and is connected to the lower folding and sealing plate 221. The power component 2251 is installed on the first connecting plate 222. The output shaft of the power component 2251 is connected to one end of the rotating rod 2252. The power component 2251 is used to drive the rotating rod 2252 to rotate to drive the movable plate 2253 to move up and down, thereby driving the lower folding and sealing plate to move back and forth.

[0056] Exemplarily, the power member 2251 drives the rotating rod 2252 to rotate, so as to drive the movable plate 2253 to move up and down, so that the lower folding sealing plate 221 is driven to move along the first direction until the lower folding sealing plate 221 is adjusted to the desired position, and then the power member 2251 stops driving, thereby realizing automatic adjustment of the lower folding sealing plate 221 without manual adjustment, which is beneficial to reducing labor intensity. At the same time, the position of the lower folding sealing plate 221 can be quickly adjusted according to the size of different box bodies, shortening the adjustment time, which is beneficial to improving the folding efficiency.

[0057] In a possible embodiment, the upper folding and sealing unit 21 includes a lifting frame 212, an upper folding and sealing plate 211, a second connecting plate 213 and a second slide plate 214 which are arranged in sequence from top to bottom. The upper folding and sealing plate 211 is installed in the middle of the lifting frame 212 and extends toward the lower folding and sealing unit 22. The lifting frame 212 is connected to both ends of the second connecting plate 213. The second connecting plate 213 and the second slide plate 214 are located on the same side of the bracket 10 and can slide on the front of the bracket 10 along the first direction. The second connecting plate 213 and the second slide plate 214 are connected through a second anti-stuck material protection component 215, and the second slide plate 214 is connected to the driving component in a transmission manner. When the upper folding and sealing plate 211 is blocked by the box body, the second anti-stuck material component 215 is disconnected to disconnect the second slide plate 214 from the second connecting plate 213.

[0058] That is to say, since the second slide plate 214 is transmission-connected to the driving assembly, and the second slide plate 214 is connected to the lower end of the second connecting plate 213 through the second anti-jamming protection assembly 215, the upper end of the second connecting plate 213 is connected to the lifting frame 212, and the upper folding plate 211 is installed in the middle of the lifting frame 212, so that when the second slide plate 214 is pushed to slide along the first direction, it drives the second connecting plate 213, the lifting frame 212 and the upper folding plate 211 to move along the first direction, thereby realizing the folding and sealing of the upper folding edge of the packaging film, without the need for manual folding and sealing, which is conducive to reducing labor intensity and improving production efficiency.

[0059] In addition, the second slide plate 214 is connected to the lower end of the second connecting plate 214 through the second anti-jamming protection component 215, so that when the upper folding plate 211 is blocked by the box body and cannot descend, the second anti-jamming protection component 215 is switched from a connected state to a disconnected state, thereby disconnecting the connection between the second slide plate 213 and the second connecting plate 213, so that the second connecting plate cannot continue to move downward, thereby ensuring that the upper folding plate 211 will not continue to move and squeeze the box body, thereby playing a certain protective role and preventing the box body from being damaged.

[0060] Exemplarily, a second sensor 100 is provided on the back of the second slide plate 214. When the upper folding sealing plate 211 is blocked by the box body, the driving component 40 continues to drive the second slide plate 214 to slide along the first direction. Since the upper folding sealing plate 211 is blocked and cannot move downward, the second connecting plate 213 cannot continue to be driven to move downward, and then the second anti-jamming material protection component 215 disconnects the second slide plate 214 from the second connecting plate 213, so that the second slide plate 214 continues to be driven to move upward until the second sensor 100 installed on the second slide plate 214 is detached from the block 110 on the second connecting plate 213. Then, the second sensor 100 receives the sensing signal and transmits it to the controller, which then controls the shutdown and sends an alarm signal, thereby promptly reminding the staff to handle it.

[0061] Specifically, the second anti-stuck material protection assembly 215 includes a second connecting strip 2153, a second limiting rod 2152 and two second limiting blocks 2151, the two second limiting blocks 2151 are symmetrically arranged on the back of the second connecting plate 213, and a through second plug-in space is formed between the two second limiting blocks 2151, the second limiting rod 2152 crosses the second plug-in space, and the second limiting rod 2152 is provided with a second elastic member 2154 at the part outside the second plug-in space, the second elastic member 2154 abuts against the second limiting block 2151, one end of the second connecting strip 2153 is connected to the second slide plate 214, and the other end is plugged into the second plug-in space. The lower part of the second plug-in space is a second circular cavity, and the end of the second connecting strip 2153 inserted into the second plug-in space is provided with a second limiting portion 2153a, and the second limiting portion 2153a is adapted to the second circular cavity.

[0062] That is to say, by symmetrically setting two second limiting blocks 2151 on the back side of the second connecting plate 213, connecting the second connecting strip 2153 on the second slide plate 214, and inserting one end of the second connecting strip 2153 with the second limiting portion 2153a into the second plug-in space, at this time, the second limiting portion 2153a of the second connecting strip 2153 is inserted into the second circular cavity, and if the upper folding and sealing plate 211 performs normal folding and sealing on the packaging film (that is, the upper folding and sealing plate 211 is not blocked by the box body), the second connecting strip 2153 continues to be plugged into the second plug-in space, so that the second slide plate 214 and the second connecting plate 213 remain connected, allowing the second connecting plate 213 to follow the first The second slide plate 214 moves with the movement of the second slide plate 214, thereby driving the upper folding plate 211 to move along the first direction to fold the upper folding edge of the packaging film; if the upper folding plate 211 is blocked by the box body and cannot be folded, the second transmission unit 44 continues to drive the second slide plate 214 to move, and the second connecting plate 213 cannot move due to being blocked, so that the second connecting strip 2153 moves relative to the second limit block 2151, and then the second connecting strip 2153 is disengaged from the second plug-in space, thereby disconnecting the second slide plate 214 from the second connecting plate 213, so that the upper folding plate will not continue to move and squeeze the box body, thereby preventing the box body from being damaged.

[0063] In a possible embodiment, the driving assembly 40 includes a driving member 41, a transmission rod 42, and a first transmission unit 43, a second transmission unit 44, and a third transmission unit 45 that are transmission-connected to the transmission rod 42. The transmission rod 42 is rotatably connected to the bracket 10 and is located on the side opposite to the box push assembly 30. The first transmission unit 43 is connected to the upper folding unit 21, the second transmission unit 44 is connected to the lower folding unit 22, and the third transmission unit 45 is connected to the box push assembly 30. The driving member 41 is fixed to the bracket 10, and the output shaft of the driving member 41 is connected to one end of the transmission rod 42, so as to drive the transmission rod 42 to rotate, so as to drive the first transmission unit 43, the second transmission unit 44, and the third transmission unit 45 to swing.

[0064] Illustratively, the driving member 41 drives the rotating rod 2252 to rotate so that the first transmission unit 43 and the second transmission unit 44 swing to drive the upper folding unit 21 and the lower folding unit 22 to move away from each other in opposite directions, thereby opening the passage space between the upper folding unit 21 and the lower folding unit 22 to a size that allows the box body to pass through, and the third transmission unit 45 is driven to swing at the same time, so that the box pushing assembly 30 pushes the box body to be packaged toward the upper folding unit 21 and the lower folding unit 22. After the front end of the box body is aligned with the upper folding unit 21 and the lower folding unit 22, the driving member 41 drives the rotating rod 2252 to rotate to drive the upper folding unit 21 and the lower folding unit 22 to move closer to each other, thereby causing the upper folding unit 21 and the lower folding unit 22 to fold and seal the upper folding edge and the lower folding edge of the film packaging respectively, and at this time, the third transmission unit 45 drives the box pushing assembly 30 to move away from the upper folding unit 21 and the lower folding unit 22, thereby completing the packaging of a box body. That is to say, the first transmission unit 43, the second transmission unit 44 and the third transmission unit 45 are all driven to swing by the rotating rod 2252, so that when the rotating rod 2252 is driven to rotate, the first transmission unit 43, the second transmission unit 44 and the third transmission unit 45 are synchronously driven to swing, so that in the process of pushing the box body to the folding assembly 20, the upper folding unit 21 and the lower folding unit 22 are synchronously driven to move in directions away from each other, with good synchronization, and can replace the existing reducer and shaft sprocket chain transmission method. The driving member 41 is directly connected to the rotating rod 2252, so that the transmission efficiency is high and the maintenance is simple, and the operation of the equipment is also smoother and the operation speed is faster.

[0065] That is to say, the driving component of the present application is to connect the first transmission unit 43, the second transmission unit 44 and the third transmission unit 45 to the same rotating rod 2252 through the rotating rod 2252, so that when the driving member 41 drives the rotating rod 2252 to rotate, the first transmission unit 43, the second transmission unit 44 and the third transmission unit 45 are driven to swing at the same time, and then the upper folding and sealing unit 21, the lower folding and sealing unit 22 and the box pushing assembly 30 are driven to work. This can cleverly replace the traditional transmission method of the reducer and the shaft sprocket chain, with high transmission efficiency and simple maintenance. At the same time, it also makes the operation of the equipment more stable, the operation speed is fast, and the maintenance is simple.

[0066] Exemplarily, the driving member 41 may be a reduction motor, or a power component that can drive the rotating rod 2252 to rotate, which is not limited thereto.

[0067] In a possible implementation, the first transmission unit 43 and the second transmission unit 44 have the same structure. The first transmission unit 43 includes a first connecting cam 431, a first driving link 432 and a first rotating link 433. The first connecting cam 431 is sleeved on the transmission rod 42. One end of the first driving link 432 is connected to the first connecting cam 431, and the other end is connected to one end of the first rotating link 433. The other end of the first rotating link 433 is connected to the upper folding and sealing unit 21. That is, when the driving member 41 drives the rotating rod 2252 to rotate, the first connecting cam 431 is driven to rotate. Since the first connecting cam 431 is connected to the first driving link 432, the other end of the first driving link 432 is connected to the upper folding and sealing unit 21, so that the upper folding and sealing unit 21 is driven to move, thereby realizing the folding and sealing of the upper folding edge of the packaging film. Similarly, the second transmission unit includes a second connecting cam 441, a second driving link 442 and a second rotating link 443. The second connecting cam 441 is sleeved on the transmission rod 42, one end of the second driving link 442 is connected to the second connecting cam 441, and the other end is connected to one end of the second rotating link 443, and the other end of the second rotating link 443 is connected to the lower folding unit 22.

[0068] Here, it should be noted that, since the first connecting cam 431 is sleeved on the transmission rod 42, the first connecting cam 431 is connected to the upper folding and sealing unit 21 through the first driving link 432 and the first rotating link 433, and the second connecting cam 441 is sleeved on the transmission rod 42, the second connecting cam 441 is connected to the lower folding and sealing unit 22 through the second driving link 442 and the second rotating link 443, so that when the transmission rod 42 is driven to rotate, the first connecting cam 431 and the second connecting cam 441 rotate in the same direction, thereby synchronously driving the upper folding and sealing unit 21 and the lower folding and sealing unit 22 to move. In other words, the driving member 41 in the embodiment of the present application does not need to switch forward and reverse to control the forward or reverse rotation of the transmission rod 42, and only needs a power source that can drive the transmission rod 42 to rotate.

[0069] In a possible embodiment, the bracket 10 includes two symmetrically arranged side panels 11 and a mounting plate 12 spanning between the two side panels 11, and a third slide rail 50 and a fourth slide rail 80 are respectively arranged on the front and back of the mounting plate 12, and two third sliders 60 are slidably connected to the third slide rail 50, and the two third sliders are respectively connected to the first slide plate 223 and the first connecting plate 222, so that the first slide plate 223 and the first connecting plate 222 can move along the first direction on the bracket 10; two fourth sliders 90 are slidably connected to the fourth slide rail 80, and the two fourth sliders 90 are respectively connected to the second slide plate 214 and the second connecting plate 213, so that the second slide plate 214 and the second connecting plate 213 can move along the first direction on the bracket 10. In this way, two different slide rails can be respectively arranged on the same mounting plate 12, thereby reducing the installation space and making the structure more compact.

[0070] In a possible embodiment, the box pushing assembly 30 includes a box blocking plate 31, a top box unit 32 and a box pushing unit 33. The box blocking plate 31 is located in front of the box outlet end of the conveyor belt, and is used to block the box body on the conveyor belt; the top box unit 32 is located between the box blocking plate 31 and the box outlet end of the conveyor belt, and is used to push up the box body blocked by the box blocking plate 31 so that the lower surface of the box body is flush with the top surface of the box blocking plate 31; the box pushing unit 33 includes a box pushing member 332 and a connecting beam 331 connected to the box pushing member 332, the connecting beam 331 is located on the outer side of the box blocking plate 31, one end of the connecting beam 331 is connected to the third transmission unit 45, the box pushing member 332 is located above the conveyor belt and arranged along the second direction, and the box pushing member 332 is connected to one end of the connecting beam 331 close to the box pushing member 332, so that under the drive of the connecting beam 331, the box pushing member 332 approaches or moves away from the box blocking plate 31.

[0071] Illustratively, by providing a box baffle plate 31 in front of the box outlet end of the conveyor belt, the box body output from the output belt is blocked by the box baffle plate 31, and then the top box assembly is used to lift the box body blocked by the box baffle plate 31 upward until the lower surface of the box body is flush with the top surface of the box baffle plate 31, and the top box assembly stops lifting. At this time, the connecting beam 331 is driven to move in the direction of conveying the box body to drive the box pushing member 332 to approach the box baffle plate 31, so that the box body is pushed forward by the box pushing member 332. After the box body is pushed out, the box pushing member 332 moves in the direction away from the box baffle plate 31, so that the box pushing member 332 returns to the initial position, and the top box assembly descends and returns to the initial position, so as to repeat the above-mentioned box pushing action for subsequent box bodies, thereby realizing automatic pushing of the box body without manual box pushing, which is beneficial to reducing labor intensity.

[0072] In a possible implementation, the third transmission unit 45 includes a swing arm 452, a connecting rod 451 and an adapter seat 453. One end of the connecting rod 451 is connected to one end of the transmission rod 42, and the other end is connected to the swing arm 452. One end of the swing arm 452 is connected to the connecting beam 331, and the other end is hinged to the adapter seat 453. In other words, the swing arm 452 is connected to the transmission rod 42 by the connecting rod 451, so that when the rotating rod 2252 is driven to rotate, the swing arm 452 can be driven to swing, and then the connecting beam 331 connected to the swing arm 452 can be driven to move, so as to drive the box-pushing member 332 connected to the connecting beam 331 to push the box body. The structure is simple and the synchronization is good, and the defects of the connection method of the reducer and the main shaft in the existing transmission mechanism can be avoided.

[0073] In a possible implementation, the box pusher assembly 30 further includes a support frame 333, a first slide rail 334, and a first slider 335. The support frame 333 is located outside the box blocking plate 31. The first slide rail 334 is provided on the surface of the support frame 333 along the direction of conveying the box body, and the first slide rail 334 is slidably connected to the first slider 335. The end of the connecting beam 331 away from the box pusher 332 is connected to the first slider 335. In this way, the first slider 335 is used to slide along the extension direction of the first slide rail 334, thereby driving the connecting beam 331 to move, so that the box pusher 332 connected to the connecting beam 331 can move back and forth.

[0074] In a possible embodiment, a through hole 31a is provided at the lower end of the baffle plate 31, and a contact member 120 is provided at the through hole 31, one end of the contact member 120 extends out of the through hole 31a and is located at the front side of the baffle plate 31, and the other end is located at the rear side of the baffle plate 31, and a contact sensing member 130 is provided on the rear surface of the baffle plate 31, and the sensing end of the contact sensing member 130 extends toward the end of the contact member located at the rear side of the baffle plate 31. In actual application, when the conveyor belt outputs the box body to contact the outer side surface of the baffle plate 31, the contact member 120 is squeezed by the box body so that the end thereof located at the rear side of the baffle plate 31 contacts the contact sensing member 130, thereby triggering a sensing signal to sense that a box body is blocked, and then transmitting the signal to the controller, and the controller controls the top box assembly to lift the box body blocked by the baffle plate 31 upward. That is to say, the contact sensing element 130 is used to sense whether the box body is blocked by the blocking plate 31. In this regard, the contact sensing element 130 can be a contact switch or other sensing components in the prior art, which is not limited.

[0075] In a possible embodiment, the top box unit 32 includes a top box plate 321, a vertical bar 322 and a driving motor 323. The vertical bar 322 is located between the baffle plate 31 and the box pushing member 332, and extends along the first direction. The top box plate 321 is connected to one end of the vertical bar 322 close to the baffle plate 31. The driving motor 323 is used to drive the vertical bar 322 to move back and forth in the vertical direction to drive the top box plate 321 to lift up the box body blocked by the baffle.

[0076] Illustratively, when the above-mentioned sensing element senses that the box body is blocked by the baffle plate 31, the driving motor 323 is started to drive the vertical bar 322 to move in a first direction, so that the top box plate 321 rises from the bottom to the top, and then the box body blocked by the baffle plate 31 is pushed upward until the lower surface of the box body is flush with the top surface of the baffle plate 31. The driving motor 323 stops working, so that the box body and the baffle are in the same straight line, so that the box body can be pushed by the moving baffle later. The structure is simple, and automatic box pushing can be realized without manual operation, which is conducive to reducing labor intensity.

[0077] Furthermore, the top box unit 32 further includes a fixing seat 324, a second slide rail 325 and a second slider 326. The driving motor 323 is installed on the outer side of the fixing seat 324. The second slide rail 325 is installed on the surface of the fixing seat 324 facing the connecting bar in the vertical direction. The second slider 326 is slidably connected to the second slide rail 325, and the second slider 326 is connected to the connecting bar. In this way, the driving motor 323 is used to provide the power required to drive the connecting bar to move, and under the mutual cooperation of the second slider 326 and the second slide rail 325, it can ensure that the connecting bar moves linearly along a predetermined direction, thereby ensuring the accuracy of the movement.

[0078] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A transmission mechanism of a packaging machine, characterized in that: include: A bracket having a first direction and a second direction perpendicular to each other; A folding and sealing assembly, comprising an upper folding and sealing unit and a lower folding and sealing unit which are slidably connected to the bracket and arranged opposite to each other, wherein the upper folding and sealing unit is arranged above the lower folding and sealing unit, and both the upper folding and sealing unit and the lower folding and sealing unit can move back and forth along the first direction; A box pusher assembly, which is arranged on one side of the bracket; A driving assembly is mounted on the bracket; wherein, when the driving assembly drives the box pushing assembly to push the box body to be packaged toward the folding and sealing assembly along the second direction, the upper folding and sealing unit and the lower folding and sealing unit are driven away from each other along the first direction; when the driving assembly drives the box pushing assembly to return along the second direction, the upper folding and sealing unit and the lower folding and sealing unit are driven toward each other along the first direction.

2. The transmission mechanism of the packaging machine according to claim 1, characterized in that: The lower folding and sealing unit comprises a lower folding and sealing plate, a first connecting plate and a first slide plate which are sequentially arranged from top to bottom. The lower folding and sealing plate, the first connecting plate and the first slide plate are located on the same side of the bracket and can slide on the back side of the bracket along the first direction. The lower folding and sealing plate is connected to the upper end of the first connecting plate, the lower end of the first connecting plate is connected to the first slide plate through a first anti-stuck material protection component, and the first slide plate is transmission-connected to the driving component. Wherein, when the lower folding sealing plate is blocked by the box body, the first anti-stuck material protection component is disconnected to disconnect the first sliding plate from the first connecting plate.

3. The transmission mechanism of the packaging machine according to claim 2, characterized in that: The first anti-stuck material protection component includes a first connecting strip, a first limiting rod and two first limiting blocks, the two first limiting blocks are symmetrically arranged on the back of the first slide plate, and a through first plug-in space is formed between the two first limiting blocks, the first limiting rod crosses the first plug-in space, and a first elastic member is provided on a portion of the first limiting rod outside the first plug-in space, the first elastic member abuts against the first limiting block, one end of the first connecting strip is connected to the first connecting plate, and the other end is plugged into the first plug-in space; The lower part of the first plug-in space is a first circular cavity, and the end of the first connecting strip inserted into the first plug-in space is provided with a first limiting portion, and the first limiting portion is adapted to the first circular cavity.

4. The transmission mechanism of the packaging machine according to claim 2, characterized in that: The lower folding and sealing unit also includes a power assembly, which includes a power piece, a rotating rod and a moving plate. The rotating rod is rotatably connected to the back side of the first connecting plate and is arranged along a first direction. The moving plate is located on the rear side of the first connecting plate and is slidably connected to the rotating rod. The moving plate passes through the first connecting plate and is connected to the lower folding and sealing plate. The power piece is installed on the first connecting plate, and the output shaft of the power piece is connected to one end of the rotating rod. The power piece is used to drive the rotating rod to rotate to drive the moving plate to move along the first direction, so as to drive the lower folding and sealing plate to move back and forth.

5. The transmission mechanism of the packaging machine according to claim 1, characterized in that: The upper folding and sealing unit comprises a lifting frame, an upper folding and sealing plate, a second connecting plate and a second sliding plate which are sequentially arranged from top to bottom. The upper folding and sealing plate is installed in the middle of the lifting frame and extends toward the direction of the lower folding and sealing unit. The lifting frame is connected to both ends of the second connecting plate. The second connecting plate and the second sliding plate are located on the same side of the bracket and can slide on the front side of the bracket along the first direction. The second connecting plate is connected to the second sliding plate through a second anti-stuck material protection component. The second sliding plate is transmission-connected to the driving component. Wherein, when the upper folding sealing plate is blocked by the box body, the second material-preventing component is disconnected to disconnect the second sliding plate from the second connecting plate.

6. The transmission mechanism of the packaging machine according to claim 5, characterized in that: The second anti-stuck material protection assembly includes a second connecting strip, a second limiting rod and two second limiting blocks, the two second limiting blocks are symmetrically arranged on the back of the second connecting plate, and a through second plug-in space is formed between the two second limiting blocks, the second limiting rod crosses the second plug-in space, and a second elastic member is provided on the part of the second limiting rod outside the second plug-in space, the second elastic member abuts against the second limiting block, one end of the second connecting strip is connected to the second sliding plate, and the other end is plugged into the second plug-in space; The lower part of the second plug-in space is a second circular cavity, and the end of the second connecting strip inserted into the second plug-in space is provided with a second limiting portion, and the second limiting portion is adapted to the second circular cavity.

7. The transmission mechanism of the packaging machine according to claim 1, characterized in that: The driving assembly includes a driving member, a transmission rod, and a first transmission unit, a second transmission unit, and a third transmission unit that are transmission-connected to the transmission rod. The transmission rod is rotatably connected to the bracket and is located on a side opposite to the box-pushing mechanism. The first transmission unit is connected to the upper folding and sealing unit, the second transmission unit is connected to the lower folding and sealing unit, and the third transmission unit is connected to the box-pushing assembly. The driving member is fixed to the bracket, and the output shaft of the driving member is connected to one end of the transmission rod for driving the transmission rod to rotate, so as to drive the first transmission unit, the second transmission unit, and the third transmission unit to swing.

8. The transmission mechanism of the packaging machine according to claim 7, characterized in that: The first transmission unit and the second transmission unit have the same structure; wherein, the first transmission unit comprises a connecting cam, a driving connecting rod and a rotating connecting rod, the connecting cam is sleeved on the transmission rod, one end of the driving connecting rod is connected to the connecting cam, and the other end is connected to one end of the rotating connecting rod, and the other end of the rotating connecting rod is connected to the upper folding and sealing unit.

9. The transmission mechanism of the packaging machine according to claim 1, characterized in that: The box pushing assembly comprises a box blocking plate, a box lifting unit and a box pushing unit. The box blocking plate is located in front of the box outlet end of the conveyor belt and is used to block the box body on the conveyor belt. The box lifting unit is located between the box blocking plate and the box outlet end of the conveyor belt and is used to lift the box body blocked by the box blocking plate upwards so that the lower surface of the box body is flush with the top surface of the box blocking plate. The box pushing unit includes a box pushing member and a connecting beam connected to the box pushing member, the connecting beam is located on the outside of the box baffle plate, one end of the connecting beam is connected to the third transmission unit, the box pushing member is located above the conveyor belt and arranged along the second direction, and the box pushing member is connected to one end of the connecting beam close to the box pushing member, so that the box pushing member is driven by the connecting beam to approach or move away from the box baffle plate.

10. The transmission mechanism of the packaging machine according to claim 8, characterized in that: The third transmission unit includes a swing arm, a connecting rod and an adapter seat, one end of the connecting rod is connected to one end of the transmission rod, and the other end is connected to the swing arm, one end of the swing arm is connected to the connecting beam, and the other end is hinged to the adapter seat.

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