Cover folding and carton sealing machine

Abstract

The utility model discloses a cover folding box sealing machine which comprises a machine frame, a conveying assembly and a lifting assembly which are arranged on the machine frame, the lifting assembly is arranged on one side of the machine frame and connected with a supporting frame, and a glue sealing assembly and a cover folding assembly which are arranged on the supporting frame and arranged front and back in the direction of the conveying assembly. The cover folding assembly comprises a front cover folding assembly, a rear cover folding assembly, a side cover folding assembly and a first driving device frame, the first driving device frame is arranged on the supporting frame, the front cover folding assembly and the rear cover folding assembly are arranged on the first driving device frame, and the rear cover folding assembly is located above the front cover folding assembly; the rear cover folding assembly comprises a first driving device, a supporting plate and a swing arm, the first driving device and the supporting plate are arranged at the two ends of a first driving device frame respectively, one end of the first driving device is hinged to the swing arm to form a first hinge point, the swing arm is hinged to the supporting plate at the same time to form a second hinge point, and the first hinge point is located between the first driving device and the second hinge point. The first driving device drives the swing arm to rotate with the supporting plate as the axis, manual operation steps can be reduced, the cover folding and box sealing device is simplified, and the packaging production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of packaging machinery, in particular to a cover folding and sealing machine. Background Art

[0002] In the express packaging industry, when cartons flow from the previous process to the sealing and gluing process, the carton lid must be flattened before normal gluing can be performed, and in order to flatten the carton lid, manual operations will be added. Currently, carton sealing machines are usually added to the production line for sealing, but most carton sealing machines are bulky, have many components, and require manual operation, which makes packaging efficiency low. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cover folding and sealing machine which reduces manual operations and simplifies the device.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A folding and sealing carton machine, comprising a frame, a conveying assembly and a lifting assembly arranged on the frame, the lifting assembly being arranged on one side of the frame, the lifting assembly being connected to a supporting frame, and a sealing assembly and a folding cover assembly being respectively arranged on the supporting frame and arranged front and back along the direction of the conveying assembly; the folding cover assembly comprises a front folding cover assembly, a rear folding cover assembly, a side folding cover assembly, and a first driving device frame, the first driving device being mounted on the supporting frame, the front folding cover assembly and the rear folding cover assembly being arranged on the first driving device frame, and the rear folding cover assembly being located above the front folding cover assembly; the rear folding cover assembly comprises a first driving device, a support plate and a swing arm, the first driving device and the support plate being respectively arranged at two ends of the first driving device frame, one end of the first driving device being hinged to the swing arm to form a first hinge point, the swing arm being hinged to the support plate at the same time to form a second hinge point, the first hinge point being located between the first driving device and the second hinge point, and the first driving device driving the swing arm to rotate with the support plate as the axis.

[0006] As a further improvement of the above technical solution: the folding side cover assembly includes a second drive device frame, a second drive device arranged on the second drive device frame, and an adjustment assembly, the second drive device is mounted on the support frame, and one end of the second drive device is hinged to the adjustment assembly.

[0007] As a further improvement of the above technical solution: the adjustment component includes a first connecting plate, a second connecting plate, a rotating shaft, a support shaft, and a side cover pressure plate, the rotating shaft and the support shaft are arranged on the second driving device frame, one end of the second driving device is rotatably connected to one end of the first connecting plate through the rotating shaft, the other end of the first connecting plate is adjustably connected to the second connecting plate, the second connecting plate and the side cover pressure plate are integrally formed, and the second driving device drives the first connecting plate to rotate, thereby driving the integrally formed second connecting plate and the side cover pressure plate to rotate around the support shaft as the axis.

[0008] As a further improvement of the above technical solution: a plurality of adjustment holes are provided on the first connecting plate, and arc grooves are provided on the second connecting plate at positions corresponding to the adjustment holes for adjusting the angle of the adjustment assembly relative to the side cover of the carton.

[0009] As a further improvement of the above technical solution: the lifting assembly includes a first screw rod, a guide rod, a guide assembly, and a third driving device for driving the first screw rod to rotate, the first screw rod is arranged parallel to the guide rod and is sleeved on the guide assembly, one side of the guide assembly is fixedly connected to the support frame, and when the third driving device drives the first screw rod to rotate, the guide assembly drives the support frame to move in a vertical direction.

[0010] As a further improvement of the above technical solution: the conveying assembly includes a second screw rod, a belt, and a fourth driving device for driving the second screw rod to rotate, the two ends of the second screw rod are connected to the frame, the second screw rod is provided with a pair of first nuts respectively connected to a pair of belts, the threads at the two ends of the second screw rod are opposite, when the fourth driving device drives the second screw rod to rotate, the pair of belts move in opposite or same directions.

[0011] As a further improvement of the above technical solution: the conveying assembly is provided with a plurality of rollers, and both ends of the plurality of rollers are connected to the frame through bearings.

[0012] As a further improvement of the above technical solution: the support frame also includes a fifth drive device and a third screw rod connected to the fifth drive device, the thread directions at both ends of the third screw rod are opposite, and second nuts are respectively provided at both ends of the third screw rod and connected to the second drive device frame. When the fifth drive device drives the third screw rod to rotate, a pair of the second drive device frames move in opposite or same directions.

[0013] As a further improvement of the above technical solution: the folding front cover assembly includes a vertical plate and a tongue plate connected to the vertical plate, one side of the tongue plate is an inclined surface and the other side is a flat surface, which is used for folding the front cover of the carton.

[0014] As a further improvement of the above technical solution: a guide plate is provided at the bottom of the glue sealing assembly, and the guide plate extends obliquely toward the direction close to the folding cover assembly to guide the left and right covers of the carton to merge with the front and rear covers of the carton.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The folding and sealing machine of the utility model arranges a front cover folding assembly, a rear cover folding assembly and a side cover folding assembly on a frame, so as to perform mechanical folding on the front cover, the rear cover and the side cover of the carton respectively; a first driving device, a support plate and a swing arm are arranged on the rear cover folding assembly; one end of the first driving device is hinged to the swing arm, and the swing arm is hinged to the support plate, so that the first driving device drives the swing arm 83 to rotate with the support plate as the axis, so that the covers can be folded automatically, the manual operation steps are reduced, the folding and sealing device is simplified, and the packaging production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other purposes, features and advantages of the present invention will become more apparent through a more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals in all the accompanying drawings indicate the same parts, and the drawings are not intentionally scaled to the actual size, but the focus is on illustrating the subject matter of the present invention.

[0018] Figure 1 It is a structural schematic diagram of the folding and sealing machine of the utility model from a first perspective;

[0019] Figure 2 It is a structural schematic diagram of the folding and sealing machine of the utility model from a second viewing angle;

[0020] Figure 3 It is a structural schematic diagram of the support frame of the folding and sealing machine of the utility model;

[0021] Figure 4 This is a structural diagram of the folding cover assembly of the folding cover carton sealing machine of the utility model

[0022] Figure 5 It is a structural schematic diagram of the folding side cover assembly of the folding cover carton sealing machine of the utility model;

[0023] Figure 6 It is a schematic structural diagram of the conveying assembly of the folding and sealing machine of the utility model.

[0024] Description of reference numerals: 1, frame; 2, conveying assembly; 21, fourth driving device; 22, second screw rod; 23, belt; 24, roller; 3, lifting assembly; 31, third driving device; 32, first screw rod; 33, guide rod; 34, guide assembly; 341, guide platform; 342, guide slider; 343, fastener; 35, cover plate; 4, support frame; 41, fifth driving device; 42, third screw rod; 5, sealing assembly; 6, folding cover assembly; 7, folding front cover assembly; 71, vertical plate; 72, tongue plate; 8, folding rear cover assembly; 81. First drive device; 82. Support plate; 83. Swing arm; 831. Weight reduction rod; 832. Rear cover pressure plate; 84. First U-shaped joint; 85. Articulated shaft; 86. Rotating rod; 9. Folding side cover assembly; 91. Second drive device frame; 92. Second drive device; 93. Adjustment assembly; 931. First connecting plate; 932. Second connecting plate; 933. Rotating shaft; 934. Support shaft; 935. Side cover pressure plate; 936. Adjustment hole; 937. Arc groove; 938. Second U-shaped joint; 10. First drive device frame; 11. Guide plate. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0026] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and integrated therewith, or there may be a central element at the same time. The terms "installation", "one end", "the other end" and similar expressions used herein are for illustrative purposes only. The orientation or positional relationship indicated by the terms "upper", "lower", "horizontal", "vertical", etc. is based on the direction or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specified orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] Figure 1-5An embodiment of the utility model is shown. The folding and sealing machine of the embodiment comprises a frame 1, a conveying component 2 and a lifting component 3 arranged on the frame 1. The lifting component 3 is arranged on one side of the frame 1. The lifting component 3 is connected to a support frame 4, and a sealing component 5 and a folding cover component 6 respectively arranged on the support frame 4 and arranged front and back along the direction of the conveying component 2. The folding cover component 6 is closer to the input end of the conveying component 2 than the sealing component 5. When the carton flows in from the conveying component 2, the folding cover component 6 first folds the upper cover body of the carton, and the sealing component 5 then seals and sticks the upper cover body of the carton.

[0029] The folding cover assembly 6 includes a folding front cover assembly 7, a folding rear cover assembly 8, a folding side cover assembly 9, and a first driving device frame 10. The first driving device frame 10 is arranged on the supporting frame 4. The folding front cover assembly 7 and the folding rear cover assembly 8 are arranged on the first driving device frame 10, and the folding rear cover assembly 8 is located above the folding front cover assembly 7. A pair of folding side cover assemblies 9 are symmetrically arranged on both sides of the first driving device frame 10, and can respectively operate the left and right covers of the carton. The folding front cover assembly 7 is used to flatten the front cover of the carton, the folding rear cover assembly 8 is used to flatten the rear cover of the carton, and the folding side cover assembly 9 is used to flatten the left cover and the right cover of the carton. The folding rear cover assembly 8 includes a first driving device 81, a support plate 82 and a swing arm 83. The first driving device 81 can be a cylinder, a pneumatic motor, a stepping motor, a DC motor, etc. The utility model is not limited thereto, as long as the driving effect can be achieved. The first drive device 81 and the support plate 82 are respectively arranged at the two ends of the first drive device frame 10. One end of the first drive device 81 is hinged to the swing arm 83 to form a first hinge point. The swing arm 83 is also hinged to the support plate 82 to form a second hinge point. The first hinge point is located between the first drive device 81 and the second hinge point. The first drive device 81 drives the swing arm 83 to rotate with the support plate 82 as the axis. Preferably, the free end of the piston rod of the first drive device 81 is connected with a first U-shaped joint 84. The swing arm and the first U-shaped joint 84 are both provided with corresponding hinge holes. The hinge shaft 85 passes through the hinge hole and is connected to both sides of the first U-shaped joint 84, so that the first U-shaped joint 84 is hinged to the end of the swing arm. A pair of support plates 82 are located at the end of the first drive device frame 10. A rotating rod 87 is passed through the support plate 82. The swing arm 83 is hinged between the pair of support plates 82 through the rotating rod 87. The swing arm 83 includes a weight-reducing rod 831 and a rear cover pressing plate 832. The second hinge point is located between the first hinge point and the rear cover pressing plate 832. The rear cover pressing plate 832 is located at the end of the swing arm 83 and is used to flatten the rear cover of the carton. The weight-reducing rod 831 is provided with a plurality of weight-reducing holes to reduce the weight of the equipment.

[0030] The conveying assembly 2 is provided with a plurality of rollers 24, and both ends of the plurality of rollers 24 are connected to the frame 1 through bearings. The rollers 24 are provided with a first sensor and a second sensor (not shown in the figure) at the front and rear. When the utility model is in use, the carton is conveyed from the input end to the rollers 24, and when the first sensor transmits the transport signal of the carton to the first driving device 81, the first driving device 81 drives the swing arm 83 to rotate with the support plate 82 as the axis, driving the rear cover pressing plate 832 to approach the carton, and the rear cover pressing plate 832 is driven by the driving force to press the rear cover of the carton downward; when the second sensor transmits the transport signal of the carton to the folding side cover assembly 9, a pair of folding side cover assemblies 9 press the left and right covers of the carton downward. After being flattened, the front cover, rear cover and side cover of the carton are conveyed to the bottom of the sealing assembly 5, and the carton that has been sealed is conveyed to the next station.

[0031] like Figure 3-5 In this embodiment, the folding side cover assembly 9 includes a second drive device frame 91, a second drive device 92 arranged on the second drive device frame 91, and an adjustment assembly 93. The second drive device frame 91 is arranged on the support frame 4, and one end of the second drive device 92 is hinged to the adjustment assembly 93. The second drive device 92 can be a cylinder, a pneumatic motor, a stepping motor, a DC motor, etc., and the utility model is not limited thereto, as long as it can achieve the driving function. The adjustment assembly 93 includes a first connecting plate 931, a second connecting plate 932, a rotating shaft 933, a support shaft 934, and a side cover pressing plate 935. The rotating shaft 933 and the support shaft 934 are arranged on the second drive device frame 91. The rotating shaft 933 is a shaft that can rotate relative to the second drive device frame 91. The support shaft 934 is fixed on the second drive device frame 91. One end of the second drive device 92 is rotatably connected to one end of the first connecting plate 931 through the rotating shaft 933.

[0032] The adjustment assembly 93 also includes a second U-shaped joint 938, the free end of the piston rod of the second driving device 92 is connected with the second U-shaped joint 938, and the second U-shaped joint 938 is hinged to the first connecting plate 931 through the second rotating shaft 933. The other end of the first connecting plate 931 is adjustable and connected to the second connecting plate 932, and the first connecting plate 931 is provided with a plurality of adjustment holes 936, and the second connecting plate 932 is provided with an arc groove 937 at the position corresponding to the adjustment hole 936, and a locking member (not shown) passes through the adjustment hole 936 and the arc groove 937 and locks the two, which is used to adjust the angle of the adjustment assembly 93 relative to the carton side cover. The second connecting plate 932 is integrally formed with the side cover pressing plate 935, and the outer periphery of the support shaft 934 is provided with a shaft sleeve, and the shaft sleeve is integrally formed with the second connecting plate 932 and the side cover pressing plate 935, and the second driving device 92 drives the first connecting plate 931 to rotate, thereby driving the integrally formed second connecting plate 932 and the side cover pressing plate 935 to rotate with the support shaft 934 as the axis. The second driving device 92 is arranged to be inclined so as to drive the first connecting plate 931 to rotate.

[0033] When the present embodiment is in use, the piston rod of the second driving device 92 drives the second U-shaped joint 938 to drive the rotating shaft 933 to rotate, thereby driving the first connecting plate 931 connected to the rotating shaft 933 to rotate, thereby driving the second connecting plate 932 and the side cover pressing plate 935 formed in one piece to rotate around the support shaft 934. Since there are usually cartons of different specifications on the production line, when the carton with a thicker box cover is conveyed, the arc groove 937 can be rotated clockwise, and the adjustment hole 936 and the arc groove 937 are fixed by the locking member, so that the angle of the first connecting plate 931 relative to the second connecting plate 932 becomes larger, thereby making the inclination angle of the side cover pressing plate 935 relative to the horizontal plane smaller, so that the box cover can be pressed flatter without rebounding.

[0034] like Figure 2 In this embodiment, the lifting assembly 3 includes a first screw rod 32, a guide rod 33, a guide assembly 34, and a third driving device 31 for driving the first screw rod 32 to rotate. The third driving device 31 can be a stepping motor, a DC motor, a cylinder, a pneumatic motor, etc. The utility model is not limited thereto, as long as it can achieve the driving effect. The first screw rod 32 is arranged in parallel with the guide rod 33 and is sleeved on the guide assembly 34. One side of the guide assembly 34 is fixedly connected to the support frame 4. The guide assembly 34 includes a guide platform 341, a guide slider 342, and a fastener 343. The first screw rod 32 and the fastener 343 are coaxially connected to the guide platform 341. The guide rod 33 and the guide slider 342 are coaxially connected to the guide platform 341. One side of the guide platform 341 is fixedly connected to the support frame 4. When the third driving device 31 drives the first screw rod 32 to rotate, the guide assembly 34 drives the support frame 4 to move in the vertical direction. Preferably, a pair of lifting assemblies 3 are provided on opposite sides of the frame 1, and the pair of lifting assemblies 3 are connected by a chain. The lifting assembly 3 further comprises a cover plate 35, the cover plate 35 is fixed on the frame, and the first screw rod 32 and the guide rod 33 are arranged on the cover plate 35. The lifting assembly 3 can adjust the height of the support frame 4 relative to the conveying assembly 2 according to cartons of different heights.

[0035] like Figure 6 In this embodiment, the conveying assembly 2 includes a second screw rod 22, a belt 23, and a fourth driving device 21 for driving the second screw rod 22 to rotate. The fourth driving device 21 can be a stepping motor, a DC motor, a cylinder, a pneumatic motor, etc. The utility model is not limited thereto, as long as the driving effect can be achieved. The second screw rod 22 is connected to the frame 1 at both ends, and a pair of first nuts are provided on the second screw rod 22, which are respectively connected to a pair of belts 23. The threads at both ends of the second screw rod 22 are opposite. When the fourth driving device 21 drives the second screw rod 22 to rotate, the pair of belts 23 move in opposite or same directions. Preferably, a pair of second screw rods 22 are respectively arranged at the input end and the output end of the frame. The conveying assembly 2 can adjust the width between the pair of belts 23 according to cartons of different widths.

[0036] like Figure 3 In this embodiment, the support frame 4 also includes a fifth drive device 41 and a third screw rod 42 connected to the fifth drive device 41. The fifth drive device 41 can be a stepper motor, a DC motor, a cylinder, a pneumatic motor, etc. The utility model is not limited thereto, as long as the driving effect can be achieved. The thread directions of the two ends of the third screw rod 42 are opposite, and the two ends of the third screw rod 42 are respectively provided with a second nut connected to the second drive device frame 91. When the fifth drive device 41 drives the third screw rod 42 to rotate, a pair of second drive device frames 91 move in opposite or same directions. A slide rail is also provided on the support frame 4, and a slider slidably connected to the slide rail is provided on the second drive device frame 91. The fifth drive device 41 cooperates with the third screw rod 42 to adjust the distance between a pair of folding side cover assemblies 9 according to cartons of different widths.

[0037] like Figure 3 In this embodiment, the front cover folding assembly 7 includes a vertical plate 71 and a tongue plate 72 connected to the vertical plate 71. One side of the tongue plate 72 is an inclined surface and the other side is a flat surface, which is used to fold the front cover of the carton. After the inclined surface of the tongue plate 72 presses down the front cover of the carton, the flat surface of the tongue plate 72 flattens the front cover of the carton and keeps it horizontal.

[0038] like Figure 2 In this embodiment, a guide plate 11 is provided at the bottom of the glue sealing assembly 5. The guide plate 11 extends obliquely toward the direction of the folding cover assembly 6. The bottom of the guide plate 11 is a plane, which is used to guide the left and right covers of the carton to merge with the front and rear covers of the carton. When the front cover and the rear cover of the carton are respectively flattened to the bottom of the tongue plate 72 plane by the folding front cover assembly 7 and the folding rear cover assembly 8, the folding side cover assembly 9 flattens the left cover and the right cover of the carton to the opposite sides of the tongue plate 72 plane. In the process of conveying the front and rear covers and the left and right covers of the carton to the glue sealing assembly, the guide plate 11 can guide the front and rear covers and the left and right covers of the carton to merge below them, which can prevent the carton cover from tilting up and facilitate glue sealing.

[0039] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A folding and sealing machine, comprising a frame (1), a conveying assembly (2) and a lifting assembly (3) arranged on the frame (1), wherein the lifting assembly (3) is arranged on one side of the frame (1), and is characterized in that: The lifting component (3) is connected to a support frame (4), and a sealing component (5) and a folding cover component (6) which are respectively arranged on the support frame (4) and arranged front and back along the direction of the conveying component (2); the folding cover component (6) comprises a front folding cover component (7), a rear folding cover component (8), a side folding cover component (9), and a first driving device frame (10); the first driving device frame (10) is arranged on the support frame (4); the front folding cover component (7) and the rear folding cover component (8) are arranged on the first driving device frame (10); the rear folding cover component (8) is located above the front folding cover component (7); the folding cover component (6) comprises a front folding cover component (7), a rear folding cover component (8), a side folding cover component (9), and a first driving device frame (10); the first driving device frame (10) is arranged on the support frame (4); the front folding cover component (7) and the rear folding cover component (8) are arranged on the first driving device frame (10); and the rear folding cover component (8) is located above the front folding cover component (7); The rear cover assembly (8) comprises a first driving device (81), a support plate (82) and a swing arm (83); the first driving device (81) and the support plate (82) are respectively arranged at two ends of the first driving device frame (10); one end of the first driving device (81) is hinged to the swing arm (83) to form a first hinge point; the swing arm (83) is hinged to the support plate (82) to form a second hinge point; the first hinge point is located between the first driving device (81) and the second hinge point; the first driving device (81) drives the swing arm (83) to rotate with the support plate (82) as the axis.

2. A folding and sealing machine according to claim 1, characterized in that: The folding side cover assembly (9) comprises a second drive device frame (91), a second drive device (92) arranged on the second drive device frame (91), and an adjustment assembly (93); the second drive device frame (91) is arranged on a support frame (4); one end of the second drive device (92) is hinged to the adjustment assembly (93).

3. A folding and sealing machine according to claim 2, characterized in that: The adjustment component (93) comprises a first connecting plate (931), a second connecting plate (932), a rotating shaft (933), a support shaft (934), and a side cover pressing plate (935); the rotating shaft (933) and the support shaft (934) are arranged on the second driving device frame (91); one end of the second driving device (92) is rotatably connected to one end of the first connecting plate (931) through the rotating shaft (933); the other end of the first connecting plate (931) is adjustably connected to the second connecting plate (932); the second connecting plate (932) and the side cover pressing plate (935) are integrally formed; the second driving device (92) drives the first connecting plate (931) to rotate, thereby driving the integrally formed second connecting plate (932) and the side cover pressing plate (935) to rotate around the support shaft (934).

4. A folding and sealing machine according to claim 3, characterized in that: The first connecting plate (931) is provided with a plurality of adjustment holes (936), and the second connecting plate (932) is provided with arc grooves (937) at positions corresponding to the adjustment holes (936) for adjusting the angle of the adjustment component (93) relative to the side cover of the carton.

5. The folding and sealing machine according to claim 1, characterized in that: The lifting assembly (3) comprises a first screw rod (32), a guide rod (33), a guide assembly (34), and a third driving device (31) for driving the first screw rod (32) to rotate; the first screw rod (32) and the guide rod (33) are arranged in parallel and sleeved on the guide assembly (34); one side of the guide assembly (34) is fixedly connected to the support frame (4); when the third driving device (31) drives the first screw rod (32) to rotate, the guide assembly (34) drives the support frame (4) to move in a vertical direction.

6. The folding and sealing machine according to claim 1, characterized in that: The conveying assembly (2) comprises a second screw rod (22), a belt (23), and a fourth driving device (21) for driving the second screw rod (22) to rotate; the second screw rod (22) is connected to the frame (1) at both ends; the second screw rod (22) is provided with a pair of first nuts respectively connected to a pair of belts (23); the threads at both ends of the second screw rod (22) are opposite; when the fourth driving device (21) drives the second screw rod (22) to rotate, the pair of belts (23) move in opposite or same directions.

7. The folding and sealing machine according to claim 1, characterized in that: The conveying assembly (2) is provided with a plurality of rollers (24), and both ends of the plurality of rollers (24) are connected to the frame (1) via bearings.

8. The folding and sealing machine according to claim 2, characterized in that: The support frame (4) further comprises a fifth drive device (41) and a third screw rod (42) connected to the fifth drive device (41); the threads at two ends of the third screw rod (42) are in opposite directions; two ends of the third screw rod (42) are respectively provided with second nuts connected to the second drive device frame (91); when the fifth drive device (41) drives the third screw rod (42) to rotate, a pair of the second drive device frames (91) move in opposite or same directions.

9. The folding and sealing machine according to claim 1, characterized in that: The folding front cover assembly (7) comprises a vertical plate (71) and a tongue plate (72) connected to the vertical plate (71); one side of the tongue plate (72) is an inclined surface and the other side is a flat surface, and is used for folding the front cover of the carton.

10. The folding and sealing machine according to claim 1, characterized in that: A guide plate (11) is provided at the bottom of the sealing component (5), and the guide plate (11) extends obliquely in a direction close to the folding cover component (6) and is used to guide the left and right covers of the carton to merge with the front and rear covers of the carton.

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