High-speed supporting box packaging machine

Abstract

The utility model discloses a high-speed supporting box packaging machine which is characterized in that a feeding conveying line is arranged on the upper surface of a rack, an unwinding assembly is arranged above the rack, a bag making device for making a film into a barrel bag is arranged at an unwinding outlet of the unwinding assembly, a heat-sealing film-drawing assembly is arranged at a conveying outlet of the feeding conveying line, and the bag making device is connected with the feeding conveying line. A first telescopic conveying line and a second telescopic conveying line are arranged in the conveying direction of the heat-sealing film-drawing assembly, and a heat-sealing cutting device is arranged between the first telescopic conveying line and the second telescopic conveying line. By means of the integrated design, a plurality of procedures such as film unwinding, bag making, heat sealing, cutting and conveying are integrated in the same equipment, operation continuity and automation degree are remarkably improved, and the problems that traditional manual or semi-automatic operation is low in efficiency and pollution is prone to being introduced are solved. And low efficiency and potential sanitation hazards caused by manual operation are avoided, the high-efficiency requirement of large-scale production is met, and the overall packaging efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tray box packaging, in particular to a high-speed tray box packaging machine. Background Art

[0002] In the vegetable processing and packaging industry, efficient and hygienic packaging of vegetables has always been a key development direction. Traditional vegetable tray packaging methods typically rely on manual or semi-automatic operations, first loading the vegetables into the tray and then wrapping the entire tray in a plastic bag. This method is not only inefficient and unable to meet the needs of large-scale production, but also easily introduces contamination during the packaging process, affecting the hygienic quality of the vegetables.

[0003] With the continuous development of automation technology, existing vegetable tray packaging equipment has achieved partial automation. However, in the process of making and sealing plastic bags, there are still multiple independent operation steps, which require manual participation or reliance on multiple independent equipment to complete. This not only increases the complexity and cost of the equipment, but also reduces packaging efficiency and reliability. To this end, we provide a high-speed tray packaging machine to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a high-speed tray packaging machine.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A high-speed tray packaging machine comprises a frame, an upper surface of the frame is provided with a feeding conveyor line for conveying trays, a reeling assembly for unwinding a film is provided above the frame, a bag maker for making a tubular bag from the film is provided at the reeling outlet of the reeling assembly, a heat-sealing film-drawing assembly for sealing the opening of the tubular bag made from the reeling assembly is provided at the conveying outlet of the feeding conveyor line, a first telescopic conveyor line and a second telescopic conveyor line that can be retracted along the conveying direction are respectively provided in the conveying direction of the heat-sealing film-drawing assembly, and a heat-sealing cutting device for transverse heat-sealing cutting of the tubular bag is provided between the first telescopic conveyor line and the second telescopic conveyor line.

[0007] Preferably, the unwinding assembly includes a vertical frame fixedly mounted on the frame, a mold-piercing shaft for carrying the film roll is rotatably mounted on the side of the vertical frame, a fixed frame is also fixedly mounted on the side of the vertical frame, and an angle adjustment structure for adjusting the unwinding direction of the film is installed on the fixed frame; the angle adjustment structure includes a guide groove opened on the side plate of the fixed frame, and the two side plates of the angle adjustment structure are also rotatably mounted with a rotating shaft, and rotating plates are fixedly mounted on both end surfaces of the rotating shaft, and an adjusting rod is rotatably mounted between the ends of the two rotating plates away from the rotating shaft, and a locking handle is rotatably mounted on one of the rotating plates, and the locking handle is slidably connected to the guide groove.

[0008] Preferably, the stand is also provided with a floating component for adjusting the tightness of the film unwinding from the die-piercing shaft, the floating component includes a pulley fixedly mounted on the end of the die-piercing shaft, and a rotating roller is also rotatably mounted on the side of the stand, and both ends of the rotating roller are fixedly connected to floating rollers through connecting plates, and a transmission block is fixedly mounted on the end of the rotating roller, and a belt is wound around the outer surface of the pulley, one end of the belt is fixedly connected to the transmission block through a pin shaft, and the other end of the belt passes around the pulley and is fixedly connected to the stand.

[0009] Preferably, a film clamping assembly for clamping and pulling the film from the die-piercing shaft is installed on the fixed frame, and the film clamping assembly includes vertical plates fixedly installed on both sides of the fixed frame, and a film pulling roller is rotatably installed between the two vertical plates. A waist-shaped hole is provided on each of the vertical plates, and an eccentric shaft is rotatably installed in the two waist-shaped holes. The ends of the two eccentric shafts close to each other are installed with bearings, and a film clamping roller is rotatably installed between the two bearings. The inner side wall of the waist-shaped hole is also provided with a film clamping drive spring that drives the eccentric shaft to move the film clamping roller toward the film pulling roller, and a rotating handle for driving it to rotate is installed on the other end of one of the eccentric shafts.

[0010] Preferably, the bag maker includes a first fixed plate for installation, two first guide rails inclined close to each other are fixedly installed on the bottom surface of the first fixed plate, a guide block is slidably installed on each of the first guide rails, a slide rod is slidably installed between the two guide blocks, a screw rod that is transmission-connected to the slide rod is also installed on the bottom surface of the first fixed plate, a connecting plate is fixedly installed on each of the guide blocks, a second guide rail is installed on each of the connecting plates, and a guide plate is slidably installed on the second guide rail.

[0011] Preferably, the heat sealing and film stretching assembly includes a heat sealing assembly and a film stretching assembly, and both the heat sealing assembly and the film stretching assembly are provided with clamping and relaxation structures for clamping and relaxing. The two first film stretching wheels have the same structure, and the heat sealing assembly includes a first heat sealing wheel and a second heat sealing wheel that are close to each other and squeeze to heat seal the tubular bag, and the film stretching assembly includes a first film stretching wheel and a second film stretching wheel that are close to each other and rotate to pull the tubular bag.

[0012] Preferably, the clamping and relaxing structure includes a second fixed plate for installation, two fixed blocks are fixedly installed on the side of the second fixed plate, and a rotating block is hingedly installed on the side of each of the fixed blocks, and the first heat sealing wheel and the first film-drawing wheel are respectively rotatably installed on the two fixed blocks, and the first heat sealing wheel and the first film-drawing wheel are both installed with a first gear at the lower end, and the second heat sealing wheel and the second film-drawing wheel are respectively rotatably installed on the two rotating blocks, and the second heat sealing wheel and the second film-drawing wheel are both installed with a second gear that meshes with the first gear at the same position at the lower end, and a clamping spring is provided between each rotating block and the fixed block to drive the rotating block to rotate toward the fixed block, and each rotating block is provided with a relaxation driving handle to drive it to rotate.

[0013] Preferably, it also includes a differential for driving the first heat sealing wheel and the first film-drawing wheel to rotate, the differential includes a shell for installation, the first conical roller and the second conical roller are rotatably installed inside the shell, a transmission belt is connected between the first conical roller and the second conical roller, and a guide wheel for guiding the transmission belt is also installed in the shell, and a driving wheel is provided at the power input end of the first conical roller or the second conical roller.

[0014] Preferably, the heat sealing and cutting device includes two guide rods that can slide up and down, a top plate is fixedly installed between the tops of the two guide rods, a guide column that can slide up and down is installed on the top plate, an upper heat sealing plate is installed on the bottom surface of the guide column, a compression spring is sleeved on the outer surface of the guide column, and the compression spring is located between the upper heat sealing plate and the top plate, and a lifting cylinder is also fixedly installed on the top plate, and a cutter that passes through the middle gap of the upper heat sealing plate and cuts the tubular bag is installed on the telescopic end of the lifting cylinder, and a lower heat sealing plate is fixedly installed on the lifting plate slidably installed between the two guide rods, and also includes a driving structure that drives the upper and lower heat sealing plates to move closer to or away from each other.

[0015] Preferably, the driving structure includes a first lifting transmission structure that drives the lower heat sealing plate to rise and fall, and a second lifting transmission structure that drives the guide rod to rise and fall, the first lifting transmission structure includes a mounting frame, a cam is rotatably mounted between the two side plates of the mounting frame via a rotating shaft, a connecting rod is rotatably mounted on the cam, the other end of the connecting rod is hinged to the mounting plate on the bottom surface of the lower heat sealing plate, and further includes a driving motor mounted on the mounting frame, the power output end of the driving motor is transmission-connected to the rotating shaft at the position of the cam;

[0016] The second lifting transmission structure includes a third gear and a fourth gear rotatably mounted on both side plates of the mounting frame, the third gear and the fourth gear are distributed up and down, the third gear is connected to the driving motor, a transmission gear is installed between the third gear and the fourth gear, a transmission plate is installed between the end faces of the third gear and the fourth gear, and a connecting block is fixedly installed on the side of the transmission plate, and each connecting block is fixedly connected to the guide rod on the same side.

[0017] Preferably, two groups of plug-in angle structures are further included, each group of plug-in angle structures is located at two guide rod positions, the plug-in angle structure includes a third fixed plate for installation, the third fixed plate is installed with an plug-in angle cylinder, and the telescopic end of the plug-in angle cylinder is installed with an plug-in angle rod.

[0018] Preferably, it also includes a linkage plate, which includes two plate bodies located at each guide rod position, and the plate bodies are provided with a first guide groove adapted to the transmission of the first telescopic conveyor line and a second guide groove adapted to the transmission of the second telescopic conveyor line.

[0019] The utility model has the following advantages:

[0020] 1. Through integrated design, the utility model integrates multiple processes such as film unwinding, bag making, heat sealing, cutting and conveying into the same equipment, which significantly improves the continuity and automation of operations, solves the problems of low efficiency and easy introduction of pollution in traditional manual or semi-automatic operations, avoids the low efficiency and health hazards caused by manual operation, meets the high efficiency needs of large-scale production, and improves the overall packaging efficiency.

[0021] 2. Through the design of the bag-making and heat-sealing film-drawing components, the present invention enables the film unwinding, bag-making, and sealing processes to proceed continuously, reducing manual intervention and improving the hygienic quality of packaging. Furthermore, by providing a differential, the rotational speeds of the first heat-sealing wheel and the first film-drawing wheel can be adjusted, thereby maintaining a taut state of the film as it passes through the first heat-sealing and film-drawing wheels. This taut state of the film better ensures a neat and aesthetically pleasing heat seal.

[0022] 3. The utility model realizes transverse heat-sealing cutting of the tubular bag through the structure of the upper and lower heat-sealing plates and the cutter, thereby ensuring the sealing of the packaging; at the same time, by setting the first lifting transmission structure and the second lifting transmission structure, the upper and lower heat-sealing plates can move closer or farther away from each other, making the heat-sealing and cutting process more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the utility model from the first perspective.

[0024] Figure 2This is a schematic diagram of the overall structure of the utility model from a second perspective.

[0025] Figure 3 This is a schematic structural diagram of the unwinding component of the utility model from the first perspective.

[0026] Figure 4 This is a schematic structural diagram of the unwinding component of the utility model from a second perspective.

[0027] Figure 5 This is a schematic diagram of the angle adjustment and film clamping assembly assembly of the present invention.

[0028] Figure 6 This is a schematic structural diagram of the floating component of the present invention from a first perspective.

[0029] Figure 7 This is a schematic structural diagram of the floating assembly of the present invention from a second perspective.

[0030] Figure 8 This is a schematic diagram of the internal structure of the utility model in a frameless state.

[0031] Figure 9 This is a schematic structural diagram of the bag making device of the present invention from the first perspective.

[0032] Figure 10 This is a schematic structural diagram of the bag making device of the present invention from a second perspective.

[0033] Figure 11 This is a schematic structural diagram of the heat-sealing film-drawing component from the first perspective of the present invention.

[0034] Figure 12 This is a schematic structural diagram of the heat-sealing film-drawing component from a second viewing angle of the present invention.

[0035] Figure 13 This is a schematic diagram of the differential structure of the present utility model.

[0036] Figure 14 This is a schematic structural diagram of the heat sealing and cutting device of the utility model from the first perspective.

[0037] Figure 15 This is a schematic structural diagram of the heat sealing and cutting device of the utility model from a second perspective.

[0038] Figure 16 This is a schematic diagram of the corner insert structure of the present utility model.

[0039] Figure 17 This is a schematic diagram of the relationship between the heat sealing and cutting of the tubular bag and the position of the box support in the present invention.

[0040] In the figure, 1, frame; 2, unwinding assembly; 21, vertical frame; 22, die-threading shaft; 23, fixed frame; 24, angle adjustment structure; 241, guide groove; 242, rotating plate; 243, adjustment rod; 244, locking handle; 245, rotating shaft; 25, film clamping assembly; 251, vertical plate; 252, waist-shaped hole; 253, film clamping roller; 254, film clamping drive spring; 255, eccentric shaft; 256, film pulling roller; 257, rotating handle; 26, floating assembly; 261, pulley; 262, Rotating roller; 263, floating roller; 264, transmission block; 265, belt; 3, feeding conveyor line; 4, bag maker; 41, first fixed plate; 42, first guide rail; 43, guide block; 44, slide bar; 45, screw rod; 46, connecting plate; 47, second guide rail; 48, guide plate; 5, heat sealing film drawing assembly; 51, first heat sealing wheel; 52, second heat sealing wheel; 53, first film drawing wheel; 54, second film drawing wheel; 55, clamping and relaxing structure; 551, second fixed plate; 552, fixed block; 55 3. Rotating block; 554. First gear; 555. Second gear; 556. Clamping spring; 557. Relaxing drive handle; 6. Heat-sealing and cutting device; 61. Guide rod; 62. Top plate; 63. Upper heat-sealing plate; 64. Lower heat-sealing plate; 65. Cutter; 66. First lifting transmission structure; 661. Mounting frame; 662. Drive motor; 663. Cam; 664. Connecting rod; 67. Second lifting transmission structure; 671. Third gear; 672. Fourth gear; 673. Transmission gear; 67 4. Transmission plate; 675. Connecting block; 68. Linkage plate; 681. Plate body; 682. First guide groove; 683. Second guide groove; 69. Guide column; 610. Compression spring; 611. Lifting cylinder; 7. Angle insertion structure; 71. Third fixed plate; 72. Angle insertion cylinder; 73. Angle insertion rod; 8. Differential; 81. Housing; 82. First tapered roller; 83. Second tapered roller; 84. Transmission belt; 85. Guide wheel; 86. Drive wheel; 9. First telescopic conveyor line; 10. Second telescopic conveyor line. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] like Figure 1 — Figure 14 The embodiment shown.

[0044] It should be noted that before the tray needs to be packaged, the tray is filled with corresponding fruits, vegetables and other products. By packaging the tray, the fruits and vegetables are packaged, the shelf life of the fruits and vegetables is extended, and external dust is prevented from entering the fruits and vegetables, thereby playing a protective role.

[0045] A high-speed tray packaging machine includes a frame 1, an upper surface of the frame 1 is provided with a feeding conveyor line 3 for conveying trays, a top of the frame 1 is provided with a reeling assembly 2 for unwinding a film, a reeling outlet of the reeling assembly 2 is provided with a bag maker 4 for making a tubular bag from the film, a conveying outlet of the feeding conveyor line 3 is provided with a heat-sealing film-drawing assembly 5 for sealing the opening of the tubular bag made from the reeling assembly 2, a conveying direction of the heat-sealing film-drawing assembly 5 is respectively provided with a first telescopic conveyor line 9 and a second telescopic conveyor line 10 that can be retracted along the conveying direction, and a heat-sealing cutting device 6 for transverse heat-sealing cutting of the tubular bag is provided between the first telescopic conveyor line 9 and the second telescopic conveyor line 10.

[0046] See Figure 1 、 Figure 2 as well as Figure 5 As shown, in order to realize packaging of the tray containing the product, in the initial state, the heat-sealing film-drawing component 5 pulls and releases the film from the unwinding component 2, and the film is bag-made when passing through the bag maker 4, and the film is made into a tubular bag. At this time, the tubular bag has an opening along the conveying direction, and then the tubular bag passes through the heat-sealing film-drawing component 5 to heat-seal the opening to form a complete tubular bag. When packaging is required, the tray containing the product is first transported to the feeding conveyor line 3 by manual or external conveyor line. As the feeding conveyor line 3 conveys the tray, it will enter the tubular bag at the position of the heat-sealing film-drawing component 5. As the heat-sealing film-drawing component 5 pulls, the tubular bag containing the product is followed and moved to the first telescopic conveyor line 9. The first telescopic conveyor line 9 transfers the tray to the position of the heat-sealing cutting device 6, and the heat-sealing cutting device 6 performs transverse heat-sealing cutting on the tubular bag here to form a packaging bag, so that the tray is located in the packaging bag after cutting, completing the packaging of the tray.

[0047] In the above, by integrating the process components such as unwinding, bag making, heat sealing and film drawing, heat sealing and cutting, and transportation into one device, the various components are linked together, the continuity and degree of automation of the operation are improved, and the problem of low efficiency and easy contamination of products caused by manual or semi-automatic operation of the transmission is solved, thereby meeting the needs of large-scale production.

[0048] The unwinding assembly 2 includes a vertical frame 21 fixedly mounted on the frame 1, and a mold-piercing shaft 22 for carrying the film roll is rotatably mounted on the side of the vertical frame 21. A fixed frame 23 is also fixedly mounted on the side of the vertical frame 21, and an angle adjustment structure 24 for adjusting the unwinding direction of the film is installed on the fixed frame 23; the angle adjustment structure 24 includes a guide groove 241 opened on the side plate of the fixed frame 23, and the two side plates of the angle adjustment structure 24 are also rotatably mounted with a rotating shaft 245, and both end surfaces of the rotating shaft 245 are fixedly mounted with a rotating plate 242, and an adjusting rod 243 is rotatably mounted between the ends of the two rotating plates 242 away from the rotating shaft 245, and a locking handle 244 is rotatably mounted on one of the rotating plates 242, and the locking handle 244 is slidably connected to the guide groove 241.

[0049] See Figures 3 to 5 As shown, when it is necessary to adjust the angle of film discharge toward the bag maker 4, first release the clamping fixation of the rotating plate 242 through the locking handle 244, then the rotating plate 242 is rotated to a certain angle, at this time the rotating end of the locking handle 244 rotates together with the rotating plate 242 in the guide groove 241, and after rotating to a certain angle, the rotating plate 242 is fixed by the locking handle 244, thereby changing the direction of film discharge. In order to be able to intuitively observe the rotation angle, a corresponding angle scale can be set on the side panel of the fixing frame 23.

[0050] The stand 21 is also provided with a floating component 26 for adjusting the tightness of the film unwinding from the die-piercing shaft 22. The floating component 26 includes a pulley 261 fixedly installed at the end of the die-piercing shaft 22. A rotating roller 262 is also rotatably installed on the side of the stand 21. Both ends of the rotating roller 262 are fixedly connected to floating rollers 263 through connecting plates. A transmission block 264 is fixedly installed at the end of the rotating roller 262. A belt 265 is wound around the outer surface of the pulley 261. One end of the belt 265 is fixedly connected to the transmission block 264 through a pin shaft, and the other end of the belt 265 passes around the pulley 261 and is fixedly connected to the stand 21.

[0051] See Figure 4 as well as Figure 6 and Figure 7As shown, the film is wound on the outer surfaces of the rotating roller 262 and the floating roller 263. Under the action of gravity, the floating roller 263 rotates downward and drives the rotating roller 262 to rotate through the connecting plate. Due to the rotation of the rotating roller 262, the transmission block 264 rotates and then drives the belt 265 to move, thereby increasing the friction between the belt 265 and the pulley 261. At this time, it is in a taut state to prevent the film from loosening. When it needs to be unwound, as the film is pulled, it overcomes the gravity of the floating roller 263 and rotates upward, thereby also driving the rotating roller 262 to rotate, and then the transmission block 264 rotates and drives the belt 265 to move, so that the contact force between the belt 265 and the pulley 261 is reduced, and the friction between the two is also reduced, making it easier to unwind. During the unwinding process, the height of the floating roller 263 and the friction between the belt 265 and the pulley 261 are constantly changing, so that the unwound film is always in a taut state.

[0052] The fixed frame 23 is provided with a film clamping assembly 25 for clamping and pulling the film from the die-piercing shaft 22. The film clamping assembly 25 includes vertical plates 251 fixedly installed on both sides of the fixed frame 23. A film pulling roller 256 is rotatably installed between the two vertical plates 251. A waist-shaped hole 252 is provided on each of the vertical plates 251. An eccentric shaft 255 is rotatably installed in the two waist-shaped holes 252. The ends of the two eccentric shafts 255 close to each other are provided with bearings. A film clamping roller 253 is rotatably installed between the two bearings. The inner side wall of the waist-shaped hole 252 is also provided with a film clamping drive spring 254 for driving the eccentric shaft 255 to move the film clamping roller 253 toward the film pulling roller 256. A rotating handle 257 for driving the eccentric shaft 255 to rotate is installed at the other end.

[0053] See Figure 5 As shown, the rotating end of the eccentric shaft 255 is located in the waist-shaped hole 252, and the outer surface of the rotating end of the eccentric shaft 255 abuts against the film clamping drive spring 254 to receive the elastic force from the film clamping drive spring 254, so that the rotating end of the eccentric shaft 255 has a tendency to move toward the film drawing roller 256. The eccentric end of the eccentric shaft 255 is connected to the bearing, and the film clamping roller 253 is rotatably installed between the two eccentric shaft 255 end bearings. When clamping the film, the film clamping drive spring 254 transmits force through the eccentric shaft 255. The film is transmitted to the film clamping roller 253, and the eccentric shaft 255 is driven to rotate by turning the rotating handle 257, so that the film clamping roller 253 at the eccentric end position moves toward the film pulling roller 256, and the gap between the film clamping roller 253 and the film pulling roller 256 is reduced, thereby clamping the film between the two; when the film needs to be released, it is only necessary to rotate the rotating handle 257 in the opposite direction to drive the eccentric shaft 255 to rotate in the opposite direction, so that the film clamping roller 253 is away from the film pulling roller 256, and the distance between the two is increased to release the film clamping state.

[0054] The bag maker 4 includes a first fixed plate 41 for installation. Two first guide rails 42 are fixedly installed on the bottom surface of the first fixed plate 41 and are inclined close to each other. A guide block 43 is slidably installed on each first guide rail 42, and a slide rod 44 is slidably installed between the two guide blocks 43. A screw rod 45 that is transmission-connected to the slide rod 44 is also installed on the bottom surface of the first fixed plate 41. A connecting plate 46 is fixedly installed on each guide block 43, and a second guide rail 47 is installed on each connecting plate 46. A guide plate 48 is slidably installed on the second guide rail 47.

[0055] See Figure 9 and Figure 10 As shown, firstly, in order to adapt to packaging bags of different diameters or widths, the sliding rod 44 can be driven to move back and forth by rotating the screw rod 45, and the back and forth movement of the sliding rod 44 drives the guide block 43 to move under the guidance of the first fixed plate 41. Since the two first fixed plates 41 are inclined close to each other, the two guide blocks 43 are driven to move synchronously by the sliding rod 44, and they also move closer or farther away from each other, thereby adjusting the distance between the two connecting plates 46, and adjusting the spacing between the two guide plates 48, thereby realizing the control and adjustment of the diameter or width of the packaging bag; secondly, in order to realize bag making of films from different heights, the guide plate 48 can be slid by the guidance of the second guide rail 47 to realize the adjustment of the height and position of the guide plate 48. After the adjustment, the guide plate 48 and the second guide rail 47 are locked and fixed.

[0056] The heat sealing and film stretching assembly 5 includes a heat sealing assembly and a film stretching assembly. Both the heat sealing assembly and the film stretching assembly are provided with a clamping and relaxation structure 55 for clamping and relaxing. The two first film stretching wheels 53 have the same structure. The heat sealing assembly includes a first heat sealing wheel 51 and a second heat sealing wheel 52 that are close to each other and squeeze the tubular bag for heat sealing. The film stretching assembly includes a first film stretching wheel 53 and a second film stretching wheel 54 that are close to each other and rotate to pull the tubular bag.

[0057] See Figure 11 and Figure 12 As shown, in this embodiment, the first heat sealing wheel 51 and the second heat sealing wheel 52 are both provided with corresponding electric heating elements, so that the two can heat-seal the opening of the tubular bag by contacting and squeezing each other. When heat sealing is required, the film formed into the shape of the bag is first squeezed and contacted by the first film-drawing wheel 53 and the second film-drawing wheel 54. The rotation of the first film-drawing wheel 53 and the second film-drawing wheel 54 drives the film to be pulled, and drives the film to be transported between the first heat sealing wheel 51 and the second heat sealing wheel 52. As the first heat sealing wheel 51 and the second heat sealing wheel 52 contact and rotate with each other, the bag opening of the tubular bag between the two is heat-sealed, thereby realizing the film-drawing and heat-sealing process.

[0058] The clamping and relaxing structure 55 includes a second fixed plate 551 for installation, and two fixed blocks 552 are fixedly installed on the side of the second fixed plate 551, and a rotating block 553 is hingedly installed on the side of each fixed block 552. The first heat sealing wheel 51 and the first film drawing wheel 53 are respectively rotatably installed on the two fixed blocks 552, and the lower ends of the first heat sealing wheel 51 and the first film drawing wheel 53 are both installed with a first gear 554. The second heat sealing wheel 52 and the second film drawing wheel 54 are respectively rotatably installed on the two rotating blocks 553, and the lower ends of the second heat sealing wheel 52 and the second film drawing wheel 54 are both installed with a second gear 555 that meshes with the first gear 554 at the same position. A clamping spring 556 is provided between each rotating block 553 and the fixed block 552 to drive the rotating block 553 to rotate toward the fixed block 552, and each rotating block 553 is provided with a relaxation driving handle 557 to drive it to rotate.

[0059] See Figure 11 and Figure 12 As shown, the first gear 554 and the second gear 555 at the positions of the first heat-sealing wheel 51 and the second heat-sealing wheel 52 are engaged and transmitted, so that the second heat-sealing wheel 52 can be rotated while the first heat-sealing wheel 51 rotates. Correspondingly, the first gear 554 and the second gear 555 at the positions of the first film-drawing wheel 53 and the second film-drawing wheel 54 are engaged and transmitted, and the second film-drawing wheel 54 can also be driven to rotate while the first film-drawing wheel 53 rotates. In order to make the first heat-sealing wheel 51 and the second heat-sealing wheel 53 and the second film-drawing wheel 54 approach each other and contact each other, the clamping spring 556 drives the rotating block 553 at the two positions to move toward the fixed block 552, so that the second heat-sealing wheel 52 moves toward the first heat-sealing wheel 51 and the second film-drawing wheel 54 moves toward the first film-drawing wheel 53, thereby realizing the pulling and sealing of the tube bag film. At this time, the first gear 554 and the second gear 555 at the two positions are engaged and transmitted.

[0060] When loosening is required, it is only necessary to manually pull the loosening drive handle 557 to overcome the elastic force of the clamping spring 556, so that the first heat sealing wheel 51 is away from the second heat sealing wheel 52 and the second film drawing wheel 54 is away from the first film drawing wheel 53, and the loose state can be achieved.

[0061] It also includes a differential 8 that drives the first heat sealing wheel 51 and the first film drawing wheel 53 to rotate. The differential 8 includes a shell 81 for installation. The first conical roller 82 and the second conical roller 83 are rotatably installed inside the shell 81. A transmission belt 84 is connected between the first conical roller 82 and the second conical roller 83. A guide wheel 85 for guiding the transmission belt 84 is also installed in the shell 81. A driving wheel 86 is provided at the power input end of the first conical roller 82 or the second conical roller 83.

[0062] See Figure 13 As shown, the first conical roller 82 and the second conical roller 83 are both set to be conical, and the directions of the two conical rollers are opposite, and the transmission is realized by the transmission belt 84. When the transmission belt 84 is at different positions of the first conical roller 82 and the second conical roller 83, since the first conical roller 82 and the second conical roller 83 are conical, their diameters are different at this time, so the rotation speeds of the two are also different. The power output end of the first conical roller 82 can be connected to the power input end of the first heat sealing wheel 51, and the power output end of the second conical roller 83 can be connected to the power input end of the first film drawing wheel 53. The ends are connected. For this reason, under the premise that the rotational speeds of the first conical roller 82 and the second conical roller 83 are different, the rotational speeds of the first heat sealing wheel 51 and the first film-drawing wheel 53 are also different. The different rotational speeds of the first heat sealing wheel 51 and the first film-drawing wheel 53 can tension the tube bag film during film drawing and heat sealing to ensure a neater seal. The external rotational power is transmitted to the first conical roller 82 or the second conical roller 83 through the driving wheel 86 to realize transmission. The driving wheel 86 can be driven by a motor or driven to rotate by other power components. There is no specific restriction here.

[0063] See Figures 3 to 5 、 Figure 8 、 Figures 11 to 13 As shown, in this embodiment, another set of differentials 8 (not marked in the figure) is further provided between the unwinding assembly 2 and the heat-sealing film-drawing assembly 5. The differential 8 located between the unwinding assembly 2 and the heat-sealing film-drawing assembly 5 has the same structure and working principle as the differential 8 connected to the heat-sealing film-drawing assembly 5 mentioned above. The speed difference between the two sets of differentials 8 is controlled to control the speed difference between the film-drawing roller 256 and the first film-drawing wheel 53 and the second film-drawing wheel 54, so that the film passing through the bag maker 4 is in a taut state, further improving the aesthetics of the formed bag.

[0064] The heat sealing and cutting device 6 includes two guide rods 61 that can slide up and down, and a top plate 62 is fixedly installed between the tops of the two guide rods 61. A guide column 69 that can slide up and down is installed on the top plate 62. An upper heat sealing plate 63 is installed on the bottom of the guide column 69. A compression spring 610 is sleeved on the outer surface of the guide column 69. The compression spring 610 is located between the upper heat sealing plate 63 and the top plate 62. A lifting cylinder 611 is also fixedly installed on the top plate 62. A cutter 65 that passes through the middle gap of the upper heat sealing plate 63 to cut the tubular bag is installed at the telescopic end of the lifting cylinder 611. A lower heat sealing plate 64 is fixedly installed on the lifting plate slidably installed between the two guide rods 61, and also includes a driving structure for driving the upper heat sealing plate 63 and the lower heat sealing plate 64 to move towards or away from each other.

[0065] See Figure 14 and Figure 15As shown, first, when the tubular bag needs to be heat-sealed and cut horizontally, the upper heat-sealing plate 63 and the lower heat-sealing plate 64 are first aligned with the position where the tubular bag is to be heat-sealed, and then the driving structure drives the lower heat-sealing plate 64 upward and the upper heat-sealing plate 63 downward to make the two contact, and the tubular bag located between the two is heat-sealed. When the heat sealing is completed, since the upper heat-sealing plate 63 continues to descend, the compression spring 610 contracts to make the cutter 65 pass through the avoidance groove gap of the upper heat-sealing plate 63 to the tubular bag position, and then the lifting cylinder 611 drives the cutter 65 downward to cut the middle of the heat-sealed area of ​​the tubular bag, completing the transverse heat-sealing and cutting of the tubular bag. After the cutting is completed, the upper heat-sealing plate 63, the lower heat-sealing plate 64 and the lifting cylinder 611 return to their initial positions, waiting for the next heat-sealing and cutting operation.

[0066] The driving structure includes a first lifting transmission structure 66 for driving the lower heat-sealing plate 64 to rise and fall, and a second lifting transmission structure 67 for driving the guide rod 61 to rise and fall. The first lifting transmission structure 66 includes a mounting frame 661. A cam 663 is rotatably mounted between the two side plates of the mounting frame 661 via a rotating shaft. A connecting rod 664 is rotatably mounted on the cam 663. The other end of the connecting rod 664 is hinged to the mounting plate on the bottom surface of the lower heat-sealing plate 64. The first lifting transmission structure 66 also includes a driving motor 662 mounted on the mounting frame 661. The power output end of the driving motor 662 is drivingly connected to the rotating shaft at the position of the cam 663.

[0067] The second lifting transmission structure 67 includes a third gear 671 and a fourth gear 672 rotatably mounted on the two side plates of the mounting frame 661. The third gear 671 and the fourth gear 672 are distributed up and down. The third gear 671 is connected to the driving motor 662 for transmission. A transmission gear 673 is installed between the third gear 671 and the fourth gear 672. A transmission plate 674 is installed between the end faces of the third gear 671 and the fourth gear 672. A connecting block 675 is also fixedly installed on the side of the transmission plate 674. Each connecting block 675 is fixedly connected to the guide rod 61 on the same side.

[0068] See Figure 14 and Figure 15 As shown, the installation position of the connecting rod 664 and the cam 663 is not coaxial with the cam 663, so that the cam 663 and the connecting rod 664 form a crank-connecting rod structure. Furthermore, the installation point of the transmission plate 674 is coaxial with the third gear 671 and the fourth gear 672. The power from the third gear 671 is transmitted to the fourth gear 672 through the transmission of the transmission gear 673, so that the third gear 671 and the fourth gear 672 rotate synchronously.

[0069] When the upper heat sealing plate 63 and the lower heat sealing plate 64 need to be driven closer to or away from each other, the driving motor 662 first drives the cam 663 to rotate, and the crank connecting rod structure composed of the cam 663 and the connecting rod 664 drives the lower heat sealing plate 64 to be lifted. At this time, the driving motor 662 also transmits power to the third gear 671 to rotate it. The third gear 671 is driven by the transmission gear 673 to make the fourth gear 672 rotate synchronously, thereby driving the transmission plate 674 installed with the two to move downward. Figure 11 It can be seen that when the transmission plate 674 moves downward, it will also move back and forth to realize a swinging action. When the transmission plate 674 moves downward, it will also drive the guide rod 61 downward through the connecting block 675, thereby driving the top plate 62 and the upper heat-sealing plate 63 to move toward the lower heat-sealing plate 64 and contact the lower heat-sealing plate 64 to realize heat sealing of the tubular bag; after the heat sealing is completed, with the continuous driving of the driving motor 662, the lower heat-sealing plate 64 will move downward, and the upper heat-sealing plate 63 will move upward, so that the upper heat-sealing plate 63 and the lower heat-sealing plate 64 are separated and move away from each other, waiting for the next heat-sealing cutting operation.

[0070] It also includes two groups of plug-in angle structures 7, each group of plug-in angle structures 7 is located at the position of two guide rods 61, and the plug-in angle structure 7 includes a third fixed plate 71 for installation, and an plug-in angle cylinder 72 is installed on the third fixed plate 71, and an plug-in angle rod 73 is installed at the telescopic end of the plug-in angle cylinder 72.

[0071] See Figure 8 and Figure 16 As shown, the two sets of inset structures 7 in this embodiment are installed on the plate body that moves in the conveying direction together with the guide rod 61, that is to say, when the guide rod 61, the second lifting transmission structure 67, etc. move together in the conveying direction, the inset structure 7 also moves together, so that the relative positions of the upper heat-sealing plate 63 and the lower heat-sealing plate 64 and the inset structure 7 in the conveying direction of the conveyor belt do not change, and thus the inset operation of the corners of the tube bag can be completed before heat sealing. In order to make the heat sealing of the tube bag more beautiful, before heat sealing, the inset cylinder 72 drives the inset rod 73 to resist the side of the tube bag, so that the side is grooved inward to complete the inset. Next, the tube bag at the inset position is heat-sealed and cut by the heat-sealing cutting device 6. After the heat sealing is cut, the inset cylinder 72 drives the inset rod 73 to return to the initial position, waiting for the next inset process. It should be noted that the inset here is actually to concave the corners at the heat-sealed position, so that the packaging bag after heat sealing is more beautiful.

[0072] See Figure 8As shown, in order to prevent the angle inserting assembly 7 from causing the position of the tubular bag containing the product to move during the angle inserting process, pressing plates for pressing the tubular bag are installed on both sides of the plate body for installing the upper heat sealing plate 63, so that the middle pressing plate under the upper heat sealing plate 63 is also lowered to press and fix the tubular bag, preventing the tubular bag from moving during the bag inserting process and affecting the heat sealing and bag inserting.

[0073] It also includes a linkage plate 68, which includes two plate bodies 681 located at the position of each guide rod 61, and the plate body 681 is provided with a first guide groove 682 adapted for the transmission of the first telescopic conveyor line 9 and a second guide groove 683 adapted for the transmission of the second telescopic conveyor line 10.

[0074] See Figure 8 as well as Figure 14 and Figure 15 As shown, it can be seen from the above that while the third gear 671 and the fourth gear 672 drive the transmission plate 674 to move up and down, they will also move back and forth. In order to prevent the corresponding components in the heat sealing and cutting device 6 from colliding with the second telescopic conveyor line 10 and causing motion interference, the second guide groove 683 is linked to the telescopic end of the second telescopic conveyor line 10. When the transmission plate 674 swings back and forth, the telescopic end of the second telescopic conveyor line 10 is driven to move through the second guide groove 683. In this embodiment, in order to prevent the first guide groove 682 from colliding with the first telescopic conveyor line 9, the first guide groove 682 is connected to the telescopic end of the first telescopic conveyor line 9 for transmission. When the transmission plate 674 moves back and forth, it will also drive the first telescopic conveyor line 9 to adapt to the front and back extension. The shapes of the first guide groove 682 and the second guide groove 683 can be adaptively designed according to the motion trajectory of the transmission plate 674, and the specific shapes are not limited here.

[0075] In the present application, while the tray moves in the conveying direction, the overall heat sealing and cutting device 6 also moves forward and heat seals and cuts the tubular bag while performing heat sealing, thereby enabling uninterrupted conveying and heat sealing of the tray, so that there will be no pause in the entire packaging process, greatly improving the heat sealing and cutting speed, and thus improving the packaging efficiency of the entire machine.

[0076] In this embodiment, the first telescopic conveyor line 9 and the second telescopic conveyor line 10 are conveyor lines that can be telescoped forward and backward. The telescopic conveyor line is a prior art and is not specifically limited here, as long as the telescopic function can be realized.

[0077] The working process of the present invention is as follows: first, the film from the unwinding component 2 is first made into a tubular bag by the bag maker 4, and then the tubular bag is heat-sealed at the position of the heat-sealing film-drawing component 5, and the feeding conveyor line 3 conveys the tray box containing the product into the tubular bag. Specifically, the tubular bag is conveyed to the position of the first heat-sealing wheel 51 and the second heat-sealing wheel 52 by the second heat-sealing wheel 54, and the tubular bag opening between the first heat-sealing wheel 51 and the second heat-sealing wheel 52 is heat-sealed by contacting each other. After the heat sealing is completed, the tubular bag with the tray box opening heat-sealed is conveyed to the position of the first telescopic conveyor line 9, and the first telescopic conveyor line 9 continues to convey the tubular bag with the tray box to the position of the heat-sealing cutting device 6 for heat-sealing and cutting. Specifically, the first lifting transmission structure 66 and The second lifting transmission structure 67 is linked to make the upper heat-sealing plate 63 and the lower heat-sealing plate 64 approach each other to heat-seal the tubular bag therebetween. When the upper heat-sealing plate 63 and the lower heat-sealing plate 64 are close to each other and are about to perform heat sealing, the angle cylinders 72 on both sides drive the angle rods 73 on both sides to move toward the box-supporting direction, thereby concave the side of the tubular bag at the heat-sealing position inward, thereby realizing the bag-insertion process and making the heat-sealed packaging bag more beautiful. After the heat sealing is completed, the angle cylinders 72 drive the angle rods 73 to return to the initial position. After the heat sealing is completed, the lifting cylinder 611 controls the cutter 65 to cut the heat-sealed area. At this time, the front and rear bag openings of the packaging bag on the outer surface of the tray are both closed. Next, the second telescopic conveyor line 10 transports the tray with the packaging bag on the outer surface to the next process.

[0078] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-speed tray packaging machine, comprising a frame (1), characterized in that: The upper surface of the frame (1) is provided with a feeding conveyor line (3) for conveying boxes, a reeling assembly (2) for reeling off a film is provided above the frame (1), a bag maker (4) for making a tube bag from the film is provided at the reeling outlet of the reeling assembly (2), a heat-sealing film-drawing assembly (5) for sealing the opening of the tube bag made from the reeling assembly (2) is provided at the conveying outlet of the feeding conveyor line (3), a first telescopic conveyor line (9) and a second telescopic conveyor line (10) which can be retracted along the conveying direction are provided in the conveying direction of the heat-sealing film-drawing assembly (5), and a heat-sealing cutting device (6) for transverse heat-sealing cutting of the tube bag is provided between the first telescopic conveyor line (9) and the second telescopic conveyor line (10).

2. A high-speed tray packaging machine according to claim 1, characterized in that: The unwinding assembly (2) comprises a stand (21) fixedly mounted on the frame (1), a mold-piercing shaft (22) for carrying a film roll being rotatably mounted on the side of the stand (21), a fixed frame (23) being fixedly mounted on the side of the stand (21), an angle adjustment structure (24) for adjusting the film unwinding direction being mounted on the fixed frame (23); the angle adjustment structure (24) comprises a guide groove (241) provided on a side plate of the fixed frame (23), a rotating shaft (245) being rotatably mounted on both side plates of the angle adjustment structure (24), rotating plates (242) being fixedly mounted on both end surfaces of the rotating shaft (245), an adjusting rod (243) being rotatably mounted between the ends of the two rotating plates (242) away from the rotating shaft (245), a locking handle (244) being rotatably mounted on one of the rotating plates (242), the locking handle (244) being slidably connected to the guide groove (241).

3. A high-speed tray packaging machine according to claim 2, characterized in that: The stand (21) is also provided with a floating component (26) for adjusting the tension of the film unwinding from the die-piercing shaft (22), and the floating component (26) includes a pulley (261) fixedly mounted on the end of the die-piercing shaft (22). A rotating roller (262) is also rotatably mounted on the side of the stand (21), and both ends of the rotating roller (262) are fixedly connected to floating rollers (263) through connecting plates. A transmission block (264) is fixedly mounted on the end of the rotating roller (262). A belt (265) is wound around the outer surface of the pulley (261), and one end of the belt (265) is fixedly connected to the transmission block (264) through a pin shaft, and the other end of the belt (265) passes around the pulley (261) and is fixedly connected to the stand (21).

4. A high-speed tray packaging machine according to claim 2, characterized in that: The fixed frame (23) is provided with a film clamping assembly (25) for clamping and pulling the film from the die-piercing shaft (22). The film clamping assembly (25) comprises vertical plates (251) fixedly mounted on both sides of the fixed frame (23). A film pulling roller (256) is rotatably mounted between the two vertical plates (251). Each of the vertical plates (251) is provided with a waist-shaped hole (252). A biasing roller (256) is rotatably mounted in each of the two waist-shaped holes (252). The central shaft (255) is provided with bearings at the ends of the two eccentric shafts (255) close to each other, and a film clamping roller (253) is rotatably installed between the two bearings. The inner wall of the waist-shaped hole (252) is also provided with a film clamping driving spring (254) for driving the eccentric shaft (255) to move the film clamping roller (253) toward the film pulling roller (256). The other end of one of the eccentric shafts (255) is provided with a rotating handle (257) for driving it to rotate.

5. The high-speed tray packaging machine according to claim 1, characterized in that: The bag making device (4) comprises a first fixed plate (41) for installation, two first guide rails (42) which are inclined and close to each other are fixedly installed on the bottom surface of the first fixed plate (41), a guide block (43) is slidably installed on each of the first guide rails (42), a slide bar (44) is slidably installed between the two guide blocks (43), a screw rod (45) which is transmission-connected with the slide bar (44) is also installed on the bottom surface of the first fixed plate (41), a connecting plate (46) is fixedly installed on each of the guide blocks (43), a second guide rail (47) is installed on each of the connecting plates (46), and a guide plate (48) is slidably installed on the second guide rail (47).

6. The high-speed tray packaging machine according to claim 1, characterized in that: The heat sealing film-drawing assembly (5) comprises a heat sealing assembly and a film-drawing assembly, and both the heat sealing assembly and the film-drawing assembly are provided with a clamping and relaxing structure (55) for clamping and relaxing, and the two first film-drawing wheels (53) have the same structure. The heat sealing assembly comprises a first heat sealing wheel (51) and a second heat sealing wheel (52) which are close to each other for extruding and heat-sealing the tube bag, and the film-drawing assembly comprises a first film-drawing wheel (53) and a second film-drawing wheel (54) which are close to each other for rotating and pulling the tube bag.

7. A high-speed tray packaging machine according to claim 6, characterized in that: The clamping and relaxing structure (55) comprises a second fixed plate (551) for installation, two fixed blocks (552) are fixedly installed on the side of the second fixed plate (551), and a rotating block (553) is hingedly installed on the side of each of the fixed blocks (552). The first heat sealing wheel (51) and the first film drawing wheel (53) are rotatably installed on the two fixed blocks (552) respectively. The lower ends of the first heat sealing wheel (51) and the first film drawing wheel (53) are both installed with a first gear (554). The second heat sealing wheel (52) and the second film drawing wheel (53) are (54) are rotatably mounted on two rotating blocks (553) respectively, and the lower ends of the second heat sealing wheel (52) and the second film drawing wheel (54) are both provided with second gears (555) meshing with the first gears (554) at the same position, and a clamping spring (556) is provided between each rotating block (553) and the fixed block (552) for driving the rotating block (553) to rotate in the direction of the fixed block (552), and a loosening driving handle (557) is provided on each rotating block (553) for driving it to rotate.

8. The high-speed tray packaging machine according to claim 6, characterized in that: It also includes a differential (8) for driving the first heat sealing wheel (51) and the first film drawing wheel (53) to rotate, and the differential (8) includes a shell (81) for installation, and the first conical roller (82) and the second conical roller (83) are rotatably installed inside the shell (81), and a transmission belt (84) is connected between the first conical roller (82) and the second conical roller (83). A guide wheel (85) for guiding the transmission belt (84) is also installed in the shell (81), and a driving wheel (86) is provided at the power input end of the first conical roller (82) or the second conical roller (83).

9. The high-speed tray packaging machine according to claim 1, characterized in that: The heat-sealing cutting device (6) comprises two guide rods (61) capable of sliding up and down, a top plate (62) being fixedly mounted between the tops of the two guide rods (61), a guide column (69) capable of sliding up and down being mounted on the top plate (62), an upper heat-sealing plate (63) being mounted on the bottom surface of the guide column (69), a compression spring (610) being sleeved on the outer surface of the guide column (69), the compression spring (610) being located between the upper heat-sealing plate (63) and the top plate (62), a lifting cylinder (611) being fixedly mounted on the top plate (62), a cutter (65) being mounted at the telescopic end of the lifting cylinder (611) for passing through the middle gap of the upper heat-sealing plate (63) to cut the tubular bag, a lower heat-sealing plate (64) being fixedly mounted on the lifting plate slidably mounted between the two guide rods (61), and a driving structure for driving the upper heat-sealing plate (63) and the lower heat-sealing plate (64) to move towards or away from each other is also included.

10. A high-speed tray packaging machine according to claim 9, characterized in that: The driving structure comprises a first lifting transmission structure (66) for driving the lower heat sealing plate (64) to lift and lower, and a second lifting transmission structure (67) for driving the guide rod (61) to lift and lower, the first lifting transmission structure (66) comprising a mounting frame (661), a cam (663) being rotatably mounted between two side plates of the mounting frame (661) via a rotating shaft, a connecting rod (664) being rotatably mounted on the cam (663), the other end of the connecting rod (664) being hinged to the mounting plate on the bottom surface of the lower heat sealing plate (64), and also comprising a driving motor (662) mounted on the mounting frame (661), the power output end of the driving motor (662) being drivingly connected to the rotating shaft at the position of the cam (663); The second lifting transmission structure (67) comprises a third gear (671) and a fourth gear (672) rotatably mounted on two side plates of the mounting frame (661); the third gear (671) and the fourth gear (672) are distributed up and down; the third gear (671) is transmission-connected to the driving motor (662); a transmission gear (673) is transmission-installed between the third gear (671) and the fourth gear (672); a transmission plate (674) is installed between the end surfaces of the third gear (671) and the fourth gear (672); a connecting block (675) is fixedly installed on the side of the transmission plate (674); each connecting block (675) is fixedly connected to the guide rod (61) on the same side.

11. The high-speed tray packaging machine according to claim 9, characterized in that: It also comprises two groups of angle plugging structures (7), each group of angle plugging structures (7) is located at the positions of two guide rods (61), the angle plugging structures (7) comprise a third fixing plate (71) for installation, an angle plugging cylinder (72) is installed on the third fixing plate (71), and an angle plugging rod (73) is installed at the telescopic end of the angle plugging cylinder (72).

12. The high-speed tray packaging machine according to claim 9, characterized in that: It also includes a linkage plate (68), the linkage plate (68) including two plate bodies (681) located at the position of each guide rod (61), the plate body (681) is provided with a first guide groove (682) adapted for transmission with the first telescopic conveyor line (9) and a second guide groove (683) adapted for transmission with the second telescopic conveyor line (10).

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