Medium-speed supporting box packaging machine

Abstract

The utility model discloses a medium-speed supporting box packaging machine which comprises a machine frame, a feeding conveying line is arranged at the feeding end of the machine frame, a conveying chain is arranged at the output end of the feeding conveying line, a plurality of shifting plates are evenly installed on the conveying chain at intervals, an unwinding structure is arranged on the top of the machine frame, and the unwinding structure is arranged on the output end of the feeding conveying line. A film-drawing heat-sealing device is arranged at the discharging end of the conveying chain, a bag-making structure is arranged between the unwinding structure and the film-drawing heat-sealing device, a first discharging conveying line and a second discharging conveying line are further included, and a heat-sealing cutting-off device is arranged between the first discharging conveying line and the second discharging conveying line. According to the full-automatic packaging machine, a plurality of functional modules such as feeding, film unwinding, bag making, film drawing heat sealing, discharging and transverse heat sealing cutting are integrated, full-process automatic operation from supporting box feeding to finished product packaging is achieved, and the automation degree is improved.

Description

Technical Field

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

[0002] In the field of food packaging, especially in the packaging of vegetables and other foods, how to complete the packaging task efficiently, automatically and hygienically has always been an important issue facing the industry. Traditional packaging methods often rely on manual operations, which are inefficient and difficult to ensure the consistency and hygiene standards of packaging. Therefore, with the development of the food industry and technological progress, the development of a new type of automated packaging equipment has become an urgent need.

[0003] Although some existing equipment can perform automatic packaging, there are still some equipment with low automation, complex operation, and reliance on manual loading, which results in efficiency that cannot meet the requirements of fast packaging. For this reason, we provide a medium-speed tray packaging machine to solve the above problems. Utility Model Content

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

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

[0006] A medium-speed tray box packaging machine comprises a frame, a feeding conveyor line for feeding and conveying is arranged at the feeding end of the frame, a rotatable conveying chain is arranged at the output end of the feeding conveyor line, a plurality of paddles are evenly installed on the conveying chain, a unwinding structure for unwinding a film is arranged on the top of the frame, a film-drawing heat-sealing device is arranged at the unloading end of the conveying chain, a bag-making structure for making a film into a cylindrical bag is arranged between the unwinding structure and the film-drawing heat-sealing device, the film-drawing heat-sealing device heat-seals the opening of the bag made of the film, and also comprises a first discharging conveyor line and a second discharging conveyor line, the first discharging conveyor line receives the cylindrical bag with trays after heat-sealing from the film-drawing heat-sealing device, and a heat-sealing cutting device for transversely heat-sealing and cutting the cylindrical bag is arranged between the first discharging conveyor line and the second discharging conveyor line.

[0007] Preferably, the unwinding structure includes a mounting bracket fixedly mounted on the upper surface of the frame, a film-threading shaft carrying the film roll is rotatably mounted on the top of the mounting bracket, and a pulley is fixedly mounted on the end of the film-threading shaft, and an adjusting plate is rotatably mounted on the outer side of the mounting bracket, and the other end of the adjusting plate is provided with a first avoidance groove, and a fixing plate is fixedly mounted on the inner side of the mounting bracket, and a rotating block is rotatably mounted on the outer side of the fixing plate, and a second avoidance groove is provided on the fixing plate, and an adjusting rod is mounted on the inner side of the other end of the rotating block, and the adjusting rod extends through the second avoidance groove, and the adjusting rod is parallel to the film-threading shaft, and a transmission rod located in the first avoidance groove is mounted on the outer side of the other end of the rotating block, and a belt is wound on the pulley, one end of the belt is fixedly mounted on the mounting bracket, and the other end of the belt is connected to the adjusting plate.

[0008] Preferably, the bag-making structure includes a first mounting plate fixedly mounted on the top shelf of the frame, a lifting adjustment module is mounted on the first mounting plate, a second mounting plate is mounted on the movable end of the lifting adjustment module, a lateral adjustment module is fixedly mounted on the second mounting plate, and two symmetrically arranged bag-making plates are mounted on the movable end of the lateral adjustment module, and a guide plate is mounted on the bottom of each bag-making plate.

[0009] Preferably, the clamping drive structure comprises a fixed seat fixedly mounted on the frame plate, a guide column is mounted on the fixed seat, a third transmission plate is fixedly mounted on the bottom surface of the first rotating plate, a baffle is fixedly mounted on the guide column, and a second spring is arranged between the baffle and the third transmission plate;

[0010] The linkage structure includes a first fixed block fixedly arranged near the end of the second rotating plate, and also includes a second fixed block arranged on a side of the second rotating plate near the first rotating plate, a transmission groove is opened on the first fixed block, and a first transmission wheel located in the transmission groove is arranged on the upper surface of the end of the second fixed block.

[0011] Preferably, the loosening drive structure includes a loosening drive motor fixedly mounted on the inner bottom surface of the frame plate, the rotating shaft of the loosening drive motor passes through the frame plate to the top thereof, the rotating shaft of the loosening drive motor is equipped with a cam, and a second transmission wheel adapted to the cam is fixedly mounted on the upper surface of the second rotating plate.

[0012] Preferably, two groups of film-drawing assemblies are respectively arranged on the upper surface of the frame plate, and are respectively located at the entrance and exit of the first heat-sealing film-clamping wheel and the second heat-sealing film-clamping wheel, each group of film-drawing assemblies includes two film-drawing wheels, the power shaft of the rotating motor is connected to one of the film-drawing wheels in each group of film-drawing assemblies through a driving chain, a guide plate is arranged on one side of the film-drawing wheel at the entrance, and a cover plate for covering is also installed on the frame plate;

[0013] It also includes a film-pulling tension control component that drives the two film-pulling wheels in each group of film-pulling components to move closer to or away from each other, the film-pulling tension control component includes an eccentric shaft rotatably mounted on the frame plate, one of the film-pulling wheels is mounted on the eccentric shaft, a clamping plate is fixedly mounted on the outer surface of the other end of the eccentric shaft, and a clamping block located on one side of the other end of the eccentric shaft is fixedly mounted on the bottom surface of the frame plate, and when the clamping plate is clamped into the clamping block, one of the film-pulling wheels contacts the other film-pulling wheel.

[0014] Preferably, the heat sealing cutting device includes two brackets, each of which has a sliding rod installed on the inner side surface of the bracket for sliding up and down movement, a top plate fixedly installed on the top of the sliding rod, a guide rod installed for sliding movement on the top plate, a heat sealing upper mold installed on the bottom of the guide rod, a first spring sleeved on the outer surface of the guide rod, a cutter fixedly installed on the inner bottom surface of the top plate, and when in use, the cutter passes through the avoidance groove in the middle of the heat sealing upper mold to cut the cylindrical bag, a heat sealing lower mold is installed on the sliding rod for sliding movement, and a transmission structure for driving the heat sealing lower mold and the heat sealing upper mold to move closer to or away from each other is provided below the heat sealing lower mold, and also includes a driving cylinder, a power output end of the driving cylinder is connected to the power input end of the transmission structure, and a pressure plate is fixedly installed on the side of the top plate.

[0015] Preferably, the transmission structure includes a fixed frame installed between the two brackets, a rotating rod is rotatably installed between the two mounting seats of the fixed frame, a first connecting rod is fixedly installed in the middle of the rotating rod, the other end of the first connecting rod is hinged to the power output end of the driving cylinder, and first transmission plates are fixedly installed at both ends of the rotating rod, and a second connecting rod and a third connecting rod are rotatably installed at both ends of each of the first transmission plates, and the other end of each of the second connecting rods is hinged to the heat sealing lower mold, and a connecting plate is fixedly installed between the bottom surfaces of the two sliding rods, and each of the third connecting rods is hinged to the connecting plate.

[0016] Preferably, the heat sealing and cutting device also includes an insertion angle structure, which includes a slider slidably mounted on the top of each of the brackets, on which an insertion angle rod is fixedly mounted, and also includes an insertion angle motor, on the rotating shaft of which a second transmission plate is fixedly mounted, and fourth connecting rods are rotatably mounted at both ends of the upper surface of the second transmission plate, and the other end of each of the fourth connecting rods is transmission-connected to the slider on the same side.

[0017] The utility model has the following advantages:

[0018] 1. The utility model integrates multiple functional modules such as feeding, film unwinding, bag making, film drawing and heat sealing, discharging and transverse heat sealing and cutting, realizing the whole process of automated operation from tray loading to finished product packaging, and improving the degree of automation; through the coordinated work of the feeding conveyor line, conveyor chain, paddle and other components, the trays to be packaged are automatically delivered to the designated position, which significantly improves the feeding and packaging efficiency and reduces the labor intensity and time cost of manual operation; at the same time, the automated process helps to reduce the packaging consistency problem caused by human factors and ensures the standardized production of products.

[0019] 2. The utility model has an ingenious unwinding structure design and adopts a linkage mechanism composed of a film-threading shaft, a pulley, an adjustment plate, a rotating block, a belt, etc., which can automatically control the unwinding speed and tension of the film and ensure the stable transportation of the film during the bag-making process. The bag-making structure can flexibly adjust the size and shape of the bag through the cooperation of the lifting adjustment module, the lateral adjustment module and the bag-making plate, so as to achieve the precise production of cylindrical bags and meet the diverse packaging needs.

[0020] 3. The film-drawing heat-sealing device of the utility model adopts a clamping drive structure, a linkage structure and a loosening drive structure, and realizes precise clamping and synchronous heat sealing of the film through the coordinated action of the first rotating plate, the second rotating plate, the film-clamping wheel, the spring, the cam and other components, thereby ensuring that the heat-sealed part is firmly sealed; at the same time, the clamping and loosening actions during the heat-sealing process can be realized through the linkage of the loosening drive structure and the clamping drive structure, thereby effectively avoiding the stretching deformation or damage of the film and improving the stability and reliability of the heat sealing; the configuration of the film-drawing wheel and the guide plate ensures that the film enters the heat-sealing area smoothly and without wrinkles, thereby further optimizing the heat-sealing effect.

[0021] 4. The heat-sealing and cutting device of the utility model integrates the functions of heat sealing and cutting. Through the precise coordination of the driving cylinder, transmission structure, cutter, heat-sealing upper and lower molds and other components, it can realize the transverse heat sealing of the cylindrical bag with the tray installed, and cut it quickly and accurately, ensuring tight sealing and smooth cutting. This integrated design simplifies the packaging process, reduces the space occupied by the equipment, and improves the compactness and work efficiency of the overall production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model in a state where a film roll is installed.

[0023] Figure 2 This is a schematic diagram of the overall first viewing angle of the utility model in a state without a film roll.

[0024] Figure 3 This is a second viewing angle schematic diagram of the entire utility model in a state without a film roll.

[0025] Figure 4 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0026] Figure 5 It is a schematic diagram of the positional relationship between the film-drawing heat-sealing device, the first discharging conveying line and the second discharging conveying line of the utility model.

[0027] Figure 6 This is a schematic diagram of the bag making structure of the utility model from the first perspective.

[0028] Figure 7 This is a schematic diagram of the bag making structure of the utility model from a second viewing angle.

[0029] Figure 8 It is a side view schematic diagram of the bag making structure of the utility model.

[0030] Fig. 9 It is a schematic diagram of the film-drawing heat-sealing device and the guide plate structure of the utility model.

[0031] Fig.10 This is a schematic diagram of the film-drawing heat-sealing device of the utility model from the first viewing angle.

[0032] Fig.11 This is a schematic diagram of the film-drawing heat-sealing device of the utility model from a second viewing angle.

[0033] Fig.12 This is a schematic diagram of the film-drawing heat-sealing device of the utility model from a third viewing angle.

[0034] Fig.13 It is a schematic diagram of the linkage structure of the utility model.

[0035] Fig.14 It is a schematic diagram of the film tension control component of the utility model.

[0036] Fig.15 This is a schematic structural diagram of the heat sealing and cutting device of the utility model from the first perspective.

[0037] Fig.16 This is a schematic structural diagram of the heat sealing and cutting device of the utility model from a second viewing angle.

[0038] Fig.17This is a schematic diagram of the positional relationship of the tray, heat sealing area and cutting line of the utility model. In the figure, 1, frame; 21, feeding conveyor line; 22, conveyor chain; 23, paddle plate; 3, unwinding structure; 31, mounting frame; 32, film threading shaft; 33, pulley; 34, adjustment plate; 35, first avoidance groove; 36, fixed plate; 37, rotating block; 38, transmission rod; 39, second avoidance groove; 310, adjustment rod; 4, bag making structure; 41, first mounting plate; 42, lifting adjustment module; 43, second mounting plate; 44, lateral adjustment module; 45, bag making plate; 46, Guide plate; 5, heat sealing cutting device; 51, bracket; 52, heat sealing lower mold; 53, heat sealing upper mold; 54, sliding rod; 55, driving cylinder; 56, transmission structure; 561, fixed frame; 562, rotating rod; 563, first connecting rod; 564, first transmission plate; 565, second connecting rod; 566, third connecting rod; 567, connecting plate; 57, top plate; 58, cutter; 59, angle structure; 591, slider; 592, angle rod; 593, angle motor; 594, first Second transmission plate; 595, fourth connecting rod; 510, guide rod; 511, first spring; 512, pressure plate; 6, film drawing and heat sealing device; 61, frame plate; 62, first rotating plate; 63, second rotating plate; 64, clamping drive structure; 641, fixed seat; 642, guide column; 643, second spring; 644, third transmission plate; 645, baffle; 65, first heat sealing film clamping wheel; 66, second heat sealing film clamping wheel; 67, gear transmission group; 68, rotating motor; 69, linkage structure ; 691, first fixed block; 692, transmission groove; 693, second fixed block; 694, first transmission wheel; 645, baffle; 610, release drive structure; 6101, second transmission wheel; 6102, cam; 6103, release drive motor; 611, film pulling wheel; 612, cover plate; 613, film pulling tightness control component; 6131, eccentric shaft; 6132, clamping plate; 6133, clamping block; 7, first discharging conveyor line; 8, second discharging conveyor line; 9, guide plate. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] like Figure 1 — Fig.15 The embodiment shown.

[0042] A medium-speed tray box packaging machine comprises a frame 1, a feeding conveyor line 21 for feeding and conveying is arranged at the feeding end of the frame 1, a rotatable conveying chain 22 is arranged at the output end of the feeding conveyor line 21, a plurality of paddles 23 are evenly installed on the conveying chain 22, a reeling structure 3 for film reeling is arranged on the top of the frame 1, a film drawing heat sealing device 6 is arranged at the unloading end of the conveying chain 22, a bag making structure 4 for making a film into a cylindrical bag is arranged between the reeling structure 3 and the film drawing heat sealing device 6, the film drawing heat sealing device 6 heat seals the opening of the bag made of the film, and also comprises a first discharging conveyor line 7 and a second discharging conveyor line 8, the first discharging conveyor line 7 receives the cylindrical bag with trays after heat sealing from the film drawing heat sealing device 6, and a heat sealing cutting device 5 for transverse heat sealing and cutting the cylindrical bag is arranged between the first discharging conveyor line 7 and the second discharging conveyor line 8.

[0043] See also Figures 1 to 3 as well as Figure 5 As shown, the tray containing vegetables is transferred to the position of the conveying chain 22 by the feeding conveyor line 21. In the process of the conveying chain 22 driving the paddle 23 to rotate, the paddle 23 drives it to move in the direction of the film-drawing heat-sealing device 6. Before this, the film unrolled from the unwinding structure 3 is made into a cylindrical bag by the bag making structure 4, and the opening of the prepared cylindrical bag is heat-sealed by the film-drawing heat-sealing device 6 and the cylindrical bag is moved, thereby forming a complete cylindrical bag. With the rotation of the conveying chain 22 and the conveying of the feeding conveyor line 21, the tray is located between the two paddles 23. The rotation of the conveying chain 22 will convey the tray between the two paddles 23 to the cylindrical bag made by the bag making structure 4, and move with the movement of the cylindrical bag. The cylindrical bag containing the tray is conveyed to the position of the heat-sealing cutting device 5 through the first discharging conveyor line 7. The heat-sealing cutting device 5 heat-seals and cuts the cylindrical bag at the position of the tray, so that the outer surface of the tray is covered with a protective film, thereby realizing the packaging of the tray.

[0044] The unwinding structure 3 includes a mounting frame 31 fixedly mounted on the upper surface of the frame 1, a film-threading shaft 32 carrying the film roll is rotatably mounted on the top of the mounting frame 31, a pulley 33 is fixedly mounted on the end of the film-threading shaft 32, an adjusting plate 34 is rotatably mounted on the outer side of the mounting frame 31, a first avoidance groove 35 is provided at the other end of the adjusting plate 34, a fixing plate 36 is fixedly mounted on the inner side of the mounting frame 31, a rotating block 37 is rotatably mounted on the outer side of the fixing plate 36, a second avoidance groove 39 is provided on the fixing plate 36, an adjusting rod 310 is mounted on the inner side of the other end of the rotating block 37, the adjusting rod 310 extends through the second avoidance groove 39, the adjusting rod 310 is parallel to the film-threading shaft 32, a transmission rod 38 located in the first avoidance groove 35 is mounted on the outer side of the other end of the rotating block 37, a belt is wound on the pulley 33, one end of the belt is fixedly mounted on the mounting frame 31, and the other end of the belt is connected to the adjusting plate 34.

[0045] See also Figures 1 to 4 As shown, in this embodiment, the heat-sealing cutting device 5 is used to pull the formed tubular bag as the power for unwinding the film-threading shaft 32. At the beginning, a film roll is arranged on the film-threading shaft 32, and the film roll is unwound through the adjusting rod 310 and other guide shafts to the position of the bag-making structure 4 for bag-making, and then the film-pulling heat-sealing device 6 is used to heat-seal the opening of the tubular bag; specifically, in order to control the unwinding speed of the film-threading shaft 32, the friction between the belt (not shown) and the pulley 33 is used to prevent the rotation speed of the film-threading shaft 32, thereby realizing the control of the unwinding speed. When the film roll is unwound and the film-threading shaft 32 is driven to rotate, due to the pulling of the film-pulling heat-sealing device 6 The power causes the adjusting rod 310 to move upward, so that the rotating block 37 and the transmission rod 38 rotate upward under the guidance of the second avoidance groove 39. Since the transmission rod 38 is located in the first avoidance groove 35, the adjusting plate 34 will also rotate upward while the transmission rod 38 follows the rotating block 37 to move upward, thereby loosening the belt. At this time, the contact force between the belt and the pulley 33 is reduced, and then the friction between the two is also reduced, realizing unwinding. Under the balance of the pulling force of the film stretching and heat sealing device 6 and the gravity of the adjusting rod 310, the friction between the belt and the pulley 33 is maintained at a certain value, so that the film roll on the film threading shaft 32 is unwound at a uniform speed.

[0046] The bag making structure 4 includes a first mounting plate 41 fixedly mounted on the top shelf of the frame 1, a lifting adjustment module 42 is mounted on the first mounting plate 41, a second mounting plate 43 is mounted on the movable end of the lifting adjustment module 42, a lateral adjustment module 44 is fixedly mounted on the second mounting plate 43, two symmetrically arranged bag making plates 45 are mounted on the movable end of the lateral adjustment module 44, and a guide plate 46 is mounted on the bottom of each bag making plate 45.

[0047] See also Figures 6 to 8As shown, the lifting and adjusting module 42 can drive the second mounting plate 43 to be lifted and lowered, and the lateral adjusting module 44 drives the two bag-making plates 45 and the two guide plates 46 to move closer to or away from each other. The height and width of the bag-making plates 45 and the guide plates 46 can be adjusted by the cooperation between the lifting and adjusting module 42 and the lateral adjusting module 44. Specifically, the lifting and adjusting module 42 can be a handwheel screw assembly, and the lateral adjusting module 44 can be a left-right screw handwheel assembly. That is to say, the width adjustment is achieved by driving the two bag-making plates 45 closer to or away from each other through the left-right screw.

[0048] Specifically, the film from the unwinding structure 3 is first shaped by the bag making plate 45 and then guided by the guide plate 46, and then heat-sealed by the film-pulling and heat-sealing device 6 to achieve a complete tubular bag. In practice, the shapes of the bag making plate 45 and the guide plate 46 can be adaptively adjusted as needed, or other existing similar structures can be used to achieve bag making as an alternative solution, which will not be explained in detail here.

[0049] The film drawing and heat sealing device 6 comprises a frame plate 61 mounted on the frame 1, on which a first rotating plate 62 and a second rotating plate 63 are rotatably mounted, respectively, a first heat sealing film clamping wheel 65 is rotatably mounted on the first rotating plate 62, and a second heat sealing film clamping wheel 66 adapted to the first heat sealing film clamping wheel 65 is rotatably mounted on the second rotating plate 63, a rotating motor 68 is fixedly mounted on the bottom surface of the frame plate 61, a gear transmission group 67 is arranged between the first heat sealing film clamping wheel 65 and the power output end of the rotating motor 68, and the rotating motor 68 passes through the rotating shaft of the first rotating plate 62 through the gear The wheel transmission group 67 drives the first heat-sealing film clamping wheel 65 to rotate, and a linkage structure 69 is arranged between the first rotating plate 62 and the second rotating plate 63 to make the two plates approach or move away from each other. A clamping drive structure 64 is arranged on the upper surface of the frame plate 61 to drive the first rotating plate 62 to rotate about the rotating axis. The first rotating plate 62 and the second rotating plate 63 are rotated closer to each other through the transmission of the linkage structure 69 and driven by the clamping drive structure 64. A loosening drive structure 610 is also installed on the frame plate 61 to drive the first rotating plate 62 and the second rotating plate 63 to move away from each other.

[0050] See also Figures 10 to 13 As shown, in the present embodiment, the gear transmission group 67 is composed of two gears, and the two gears are meshed for transmission. One is installed on the rotating shaft of the first heat-sealing film clamping wheel 65, and the other is installed on the rotating shaft of the rotating motor 68. The rotating shaft of the rotating motor 68 is coaxial with the rotating shaft of the first rotating plate 62. This can be understood as that the rotating shaft of the first rotating plate 62 is hollow so that the rotating shaft of the rotating motor 68 can pass through the hollow hole to the top of the first rotating plate 62. The rotating motor 68 drives the rotating shaft of the first heat-sealing film clamping wheel 65 to rotate through the transmission of the gear transmission group 67, thereby causing the first heat-sealing film clamping wheel 65 to rotate as well.

[0051] In order to heat-seal the opening of the tubular bag, it is necessary to bring the first heat-sealing clamping wheel 65 and the second heat-sealing clamping wheel 66 close to each other to squeeze the tubular bag opening between the two, thereby achieving heat sealing during the extrusion process and sealing the opening. Specifically, when extrusion is required, the power from the clamping drive structure 64 drives the first rotating plate 62 to rotate around the rotating axis, thereby causing the first heat-sealing clamping wheel 65 to move toward the second heat-sealing clamping wheel 66. Since a linkage structure 69 is provided between the first rotating plate 62 and the second rotating plate 63 to realize transmission, the second rotating plate 63 is also rotated while the first rotating plate 62 rotates and under the transmission of the linkage structure 69, and then the second heat-sealing clamping wheel 66 is also moved toward the first heat-sealing clamping wheel 65, so that the first heat-sealing clamping wheel 65 and the second heat-sealing clamping wheel 66 are close to each other to squeeze and heat-seal the tubular bag opening between the two, thereby completing the heat sealing process.

[0052] The clamping drive structure 64 includes a fixed seat 641 fixedly mounted on the frame plate 61, a guide column 642 is mounted on the fixed seat 641, a third transmission plate 644 is fixedly mounted on the bottom surface of the first rotating plate 62, a baffle 645 is fixedly mounted on the guide column 642, and a second spring 643 is arranged between the baffle 645 and the third transmission plate 644.

[0053] The linkage structure 69 includes a first fixed block 691 fixedly arranged near the end of the second rotating plate 63, and also includes a second fixed block 693 arranged on a side of the second rotating plate 63 near the first rotating plate 62. A transmission groove 692 is opened on the first fixed block 691, and a first transmission wheel 694 located in the transmission groove 692 is arranged on the upper surface of the end of the second fixed block 693.

[0054] See also Figures 10 to 13 As shown, the second spring 643 is located between the third transmission plate 644 and the baffle 645. The second spring 643 transmits the elastic force to the third transmission plate 644. Since the third transmission plate 644 is fixedly connected to the first rotating plate 62, the elastic force of the second spring 643 will also be transmitted to the first rotating plate 62 to realize the power of the rotation of the first rotating plate 62. Fig.13As shown, during the rotation of the first rotating plate 62, the rotating power is transmitted to the first transmission wheel 694 through the transmission groove 692, and the first transmission wheel 694 contacts the side wall of the transmission groove 692 to realize transmission. Since the second fixed block 693 is connected to the second rotating plate 63, the power is transmitted to the second rotating plate 63, and then the first rotating plate 62 and the second rotating plate 63 are rotated close to each other, and the first heat-sealing film clamping wheel 65 and the second heat-sealing film clamping wheel 66 are moved close to each other to squeeze and heat seal the tube bag opening therebetween. In this embodiment, other transmission methods can also be used to replace the linkage structure 69, as long as the structural casing that can realize the first rotating plate 62 and the second rotating plate 63 are close to each other, the specific structure is not limited here.

[0055] The loosening drive structure 610 includes a loosening drive motor 6103 fixedly mounted on the inner bottom surface of the frame plate 61, the rotating shaft of the loosening drive motor 6103 passes through the frame plate 61 to the top thereof, the rotating shaft of the loosening drive motor 6103 is installed with a cam 6102, and the upper surface of the second rotating plate 63 is fixedly mounted with a second transmission wheel 6101 adapted to the cam 6102.

[0056] See also Fig.11 and Fig.14 As shown, in order to release the first heat-sealing film clamping wheel 65 and the second heat-sealing film clamping wheel 66 from being squeezed close to each other to squeeze the opening of the tube bag, firstly, the driving force of the clamping drive structure 64 is overcome to make the first rotating plate 62 and the second rotating plate 63 rotate in opposite directions, and under the transmission of the linkage structure 69, the first rotating plate 62 and the second rotating plate 63 are rotated away from each other, thereby also causing the first heat-sealing film clamping wheel 65 and the second heat-sealing film clamping wheel 66 to move away from each other, thereby achieving the release of the mutual clamping of the two and placing them in a loosened state.

[0057] Specifically, first, the cam 6102 is driven to rotate by loosening the driving motor 6103. During the rotation, the raised portion of the cam 6102 will be released from the second transmission wheel 6101, thereby realizing the reverse rotation of the second rotating plate 63. Under the transmission of the linkage structure 69, the force of the clamping driving structure 64 is overcome to rotate the first rotating plate 62, so that the first rotating plate 62 and the second rotating plate 63 rotate in opposite directions and away from each other, thereby making the first heat sealing clamping wheel 65 and the second heat sealing clamping wheel 66 also move away from each other, realizing the loosened state.

[0058] Two groups of film-drawing assemblies are respectively arranged on the upper surface of the frame plate 61, and are respectively located at the entrance and exit of the first heat-sealing film-clamping wheel 65 and the second heat-sealing film-clamping wheel 66. Each group of film-drawing assemblies includes two film-drawing wheels 611. The power shaft of the rotating motor 68 is connected to one of the film-drawing wheels 611 in each group of film-drawing assemblies through a driving chain. A guide plate 9 is arranged on one side of the film-drawing wheel 611 at the entrance. A cover plate 612 for covering is also installed on the frame plate 61.

[0059] It also includes a film-pulling tension control component 613 that drives the two film-pulling wheels 611 in each group of film-pulling components to move closer to or away from each other. The film-pulling tension control component 613 includes an eccentric shaft 6131 rotatably mounted on the frame plate 61, wherein one of the film-pulling wheels 611 is mounted on the eccentric shaft 6131, a clamping plate 6132 is fixedly mounted on the outer surface of the other end of the eccentric shaft 6131, and a clamping block 6133 located on one side of the other end of the eccentric shaft 6131 is fixedly mounted on the bottom surface of the frame plate 61, and when the clamping plate 6132 is clamped into the clamping block 6133, one of the film-pulling wheels 611 is contacted and clamped with the other film-pulling wheel 611.

[0060] See also Figures 9 to 12 As shown, in order to pull the film on the unwinding structure 3, the film is clamped by the film-drawing wheel 611 at the entrance, and the tube bag film is sent between the first heat-sealing film-clamping wheel 65 and the second heat-sealing film-clamping wheel 66 for heat sealing during the rotation of the film-drawing wheel 611. The heat-sealed tube bag film is clamped and transported out by the film-drawing wheel 611 at the exit. The rotational power source of the two film-drawing wheels 611 is provided by the rotating motor 68. Specifically, the power output end of the rotating motor 68 can transmit power to each film-drawing wheel 611 through a transmission chain, thereby realizing driving, and the two film-drawing wheels The wheel 611 and the first heat-sealing film clamping wheel 65 are driven by the same power source, a rotating motor 68, so that the two film-drawing wheels 611 and the first heat-sealing film-clamping wheel 65 can rotate at the same speed to prevent the tube bag film from being broken or torn due to different speeds. In order to facilitate the tube bag film from the bag making structure 4 to enter the film-drawing wheel 611 at the entrance, the film is guided by the guide plate 9 to make the film transmission smoother; in order to ensure safety, the film-drawing wheel 611, the first heat-sealing film clamping wheel 65 and the second heat-sealing film clamping wheel 66 are covered by the cover plate 612, leaving only the conveying heat sealing part exposed.

[0061] Before film drawing, the two film drawing wheels 611 in each group of film drawing components need to be brought close to each other to extrude the tubular bag film located between the two. Specifically, each group of film drawing wheels 611 connected to the rotating motor 68 through a chain drive can be recorded as a driving wheel. The driving wheel is installed on the frame plate 61 through a common rotating shaft. The film drawing wheel 611 that needs to be adjusted to move closer to or away from the driving wheel is recorded as an adjusting wheel. In this embodiment, the adjusting wheel is installed on the eccentric shaft 6131. ​​When the adjusting wheel needs to move closer to the driving wheel, the clamping block 6131 needs to be driven to rotate by the clamping plate 6132, so as to drive the adjusting wheel to move in the direction of the driving wheel under the eccentric action. When the clamping plate 6132 is inserted into the clamping groove of the clamping block 6133, the adjusting wheel and the driving wheel are clamped close to each other to realize the extrusion transmission of the tubular bag film located between the two. When the driving wheel rotates, it will drive the tubular bag film to move; if the adjusting wheel and the driving wheel need to move away from each other, the above operation can be performed in reverse to achieve the two moving away from each other.

[0062] The heat sealing cutting device 5 includes two brackets 51, and a sliding rod 54 is slidably installed on the inner side surface of each bracket 51, and a top plate 57 is fixedly installed on the top of the sliding rod 54. A guide rod 510 is slidably installed on the top plate 57, and a heat sealing upper mold 53 is installed at the bottom of the guide rod 510. The outer surface of the guide rod 510 is sleeved with a first spring 511, and a cutter 58 is fixedly installed on the inner bottom surface of the top plate 57. When in use, the cutter 58 passes through the avoidance groove in the middle of the heat sealing upper mold 53 to cut the cylindrical bag. A heat sealing lower mold 52 is slidably installed on the sliding rod 54, and a transmission structure 56 is arranged below the heat sealing lower mold 52 to drive the heat sealing lower mold 52 and the heat sealing upper mold 53 to move closer or farther from each other. It also includes a driving cylinder 55, and the power output end of the driving cylinder 55 is connected to the power input end of the transmission structure 56. A pressing plate 512 is fixedly installed on the side of the top plate 57 along the conveying direction.

[0063] See also Fig.15 and Fig.16As shown, firstly, the driving cylinder 55 is started to drive the sliding rod 54 to move downward and the heat-sealing lower mold 52 to move upward through the transmission of the transmission structure 56. When the sliding rod 54 moves downward, it also drives the top plate 57 on its top to move downward, so that the heat-sealing upper mold 53 and the heat-sealing lower mold 52 move closer to each other, so that the two are in contact with each other to heat-seal the tube bag horizontally. As the sliding rod 54 continues to drive the heat-sealing upper mold 53 to move downward and the heat-sealing lower mold 52 to move upward, the first spring 511 is forced to contract, and the end of the cutter 58 will pass through the horizontal gap in the middle of the heat-sealing upper mold 53 and be located below the surface of the heat-sealing upper mold 53, thereby contacting the heat-sealing lower mold 52 and the heat-sealing upper mold 5 3 is cut off in the middle of the heat-sealed area. At this time, the tray is located in the cut tube bag, and the packaging of the tray is completed. At this time, the transverse heat-sealed cutting process of the tube bag is completed. After the heat-sealed cutting is completed, the driving cylinder 55 is restored to the initial filling. Under the transmission of the transmission structure 56 and the sliding rod 54, the heat-sealed upper mold 53 and the heat-sealed lower mold 52 are also restored to the initial state, waiting for the transverse heat-sealed cutting of the tube bag at the next tray position. In order to prevent the cutter 58 from hard collision with the heat-sealed lower mold 52 during cutting, a transverse gap for avoidance can be also opened in the middle of the heat-sealed lower mold 52. The specific tray, tube bag, heat-sealed area and cutting line are shown in FIG. Fig.16 shown.

[0064] The transmission structure 56 includes a fixed frame 561 installed between two brackets 51, a rotating rod 562 is rotatably installed between the two mounting seats of the fixed frame 561, a first connecting rod 563 is fixedly installed in the middle of the rotating rod 562, the other end of the first connecting rod 563 is hinged to the power output end of the driving cylinder 55, and first transmission plates 564 are fixedly installed at both ends of the rotating rod 562. A second connecting rod 565 and a third connecting rod 566 are rotatably installed at both ends of each first transmission plate 564, and the other end of each second connecting rod 565 is hinged to the heat-sealing lower mold 52. A connecting plate 567 is fixedly installed between the bottom surfaces of the two sliding rods 54, and each third connecting rod 566 is hinged to the connecting plate 567.

[0065] See also Fig.15 and Fig.16As shown, the specific transmission process of the transmission structure 56 is as follows. First, the cylinder 55 is driven to drive the first connecting rod 563 and the rotating rod 562 to rotate. Since the first transmission plate 564 is fixedly connected to the rotating rod 562, the first transmission plate 564 will also be driven to rotate when the rotating rod 562 rotates. The second connecting rod 565 and the third connecting rod 566 are respectively located at the two ends of the first transmission plate 564. Therefore, when the first transmission plate 564 rotates, the second connecting rod 565 is rotated and moved upward, driving the heat-sealing lower mold 52 to move upward about the guide of the sliding rod 54, and driving the connecting plate 567 connected to the third connecting rod 566 to move downward. Since the connecting plate 567 is connected to the bottom of the sliding rod 54, the sliding rod 54 will also be driven downward when the connecting plate 567 moves downward. The heat-sealing upper mold 53 is connected to the top plate 57 on the top of the sliding rod 54, thereby realizing the linkage effect of the heat-sealing upper mold 53 moving downward and the heat-sealing lower mold 52 moving upward on the heat sealing of the tubular bag.

[0066] The heat sealing and cutting device 5 also includes an inserting angle structure 59, which includes a slider 591 slidably mounted on the top of each bracket 51, on which an inserting angle rod 592 is fixedly mounted, and also includes an inserting angle motor 593, on the rotating shaft of which a second transmission plate 594 is fixedly mounted, and fourth connecting rods 595 are rotatably mounted at both ends of the upper surface of the second transmission plate 594, and the other end of each fourth connecting rod 595 is transmission-connected to the slider 591 on the same side.

[0067] See also Fig.15 and Fig.16 As shown, in order to make the heat-sealing area of ​​the heat-sealing lower mold 52 and the heat-sealing upper mold 53 more beautiful, it is necessary to insert the heat-sealing area before heat sealing so that the edge of the tube bag faces inward. Specifically, the inserting motor 593 is first started to drive the second transmission plate 594 to rotate. The two fourth connecting rods 595 are located on both sides of the second transmission plate 594. As the second transmission plate 594 rotates, the fourth connecting rods 595 on both sides will also rotate. Then, while the fourth connecting rod 595 rotates with the second transmission plate 594, the other end of the fourth connecting rod 595 will drive the slider 591 to move, thereby driving the inserting angle The rod 592 is inserted into the edge of the tube bag to make the edge concave inward. Specifically, the heat sealing process can be carried out while the corner is inserted. The heat sealing and cutting are carried out by the cooperation of the heat sealing lower mold 52, the heat sealing upper mold 53 and the cutter 58. In order to prevent the position of the tray from changing during the corner insertion, the tray is pressed by the pressing plate 512 to prevent its position from changing. During the corner insertion process, the top plate 57 drives the pressing plate 512 to descend and press the tray. After the corner insertion is completed, the heat sealing and cutting process is immediately carried out. The timing of the corner insertion process and the heat sealing and cutting process can be designed according to needs and is not limited here.

[0068] The working process of the utility model is as follows: first, the feeding conveyor line 21 transfers the tray to the position of the paddle plate 23, and the conveying chain 22 rotates to drive the paddle plate 23 to move. At this time, the film-drawing heat-sealing device 6 heat-seals the opening of the tubular bag formed from the bag-making structure 4 to form a complete tubular bag. The paddle plate 23 rotates to transfer the tray to the position of the tubular bag heat-sealed by the film-drawing heat-sealing device 6. Next, the tubular bag containing the tray will continue to be conveyed to the position of the heat-sealing cutting device 5, and the tubular bag will be transversely heat-sealed and cut by the heat-sealing cutting device 5, thereby realizing the packaging of the tray. The packaged tray will be conveyed to the next process by the second discharging conveyor line 8.

[0069] 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 protection scope of the present invention.

Claims

1. A medium-speed tray packaging machine, comprising a frame (1), characterized in that: A feeding conveyor line (21) for feeding and conveying is arranged at the feeding end of the frame (1), a rotatable conveying chain (22) is arranged at the output end of the feeding conveyor line (21), a plurality of paddles (23) are evenly spacedly installed on the conveying chain (22), an unwinding structure (3) for unwinding a film is arranged at the top of the frame (1), a film-drawing heat-sealing device (6) is arranged at the unloading end of the conveying chain (22), and the unwinding structure (3) and the film-drawing heat-sealing device ( 6), a bag making structure (4) for making a film into a cylindrical bag is arranged between the film and the heat sealing device (6), the film drawing heat sealing device (6) heat seals the opening of the bag made of the film, and also includes a first discharge conveyor line (7) and a second discharge conveyor line (8), the first discharge conveyor line (7) receives the cylindrical bag with a tray after heat sealing from the film drawing heat sealing device (6), and a heat sealing cutting device (5) for transversely heat sealing and cutting the cylindrical bag is arranged between the first discharge conveyor line (7) and the second discharge conveyor line (8).

2. A medium-speed tray packaging machine according to claim 1, characterized in that: The unwinding structure (3) comprises a mounting frame (31) fixedly mounted on the upper surface of the frame (1); a film-threading shaft (32) carrying the film roll is rotatably mounted on the top of the mounting frame (31); a pulley (33) is fixedly mounted on the end of the film-threading shaft (32); an adjusting plate (34) is rotatably mounted on the outer side surface of the mounting frame (31); a first avoidance groove (35) is provided at the other end of the adjusting plate (34); a fixing plate (36) is fixedly mounted on the inner side surface of the mounting frame (31); a rotating block (37) is rotatably mounted on the outer side surface of the fixing plate (36); A second avoidance groove (39) is provided on the fixed plate (36); an adjusting rod (310) is installed on the inner side surface of the other end of the rotating block (37); the adjusting rod (310) extends through the second avoidance groove (39); the adjusting rod (310) is parallel to the membrane-penetrating shaft (32); a transmission rod (38) located in the first avoidance groove (35) is installed on the outer side surface of the other end of the rotating block (37); a belt is wound on the pulley (33); one end of the belt is fixedly mounted on the mounting frame (31), and the other end of the belt is connected to the adjusting plate (34).

3. The medium-speed tray packaging machine according to claim 1, characterized in that: The bag making structure (4) comprises a first mounting plate (41) fixedly mounted on the top shelf of the frame (1); a lifting and lowering adjustment module (42) is mounted on the first mounting plate (41); a second mounting plate (43) is mounted on the movable end of the lifting and lowering adjustment module (42); a lateral adjustment module (44) is fixedly mounted on the second mounting plate (43); two symmetrically arranged bag making plates (45) are mounted on the movable end of the lateral adjustment module (44); and a guide plate (46) is mounted on the bottom of each bag making plate (45).

4. The medium-speed tray packaging machine according to claim 1, characterized in that: The film-drawing heat-sealing device (6) comprises a frame plate (61) mounted on the frame (1), and a first rotating plate (62) and a second rotating plate (63) are rotatably mounted on the frame plate (61), a first heat-sealing film-clamping wheel (65) is rotatably mounted on the first rotating plate (62), and a second heat-sealing film-clamping wheel (66) adapted to the first heat-sealing film-clamping wheel (65) is rotatably mounted on the second rotating plate (63), a rotating motor (68) is fixedly mounted on the bottom surface of the frame plate (61), a gear transmission group (67) is arranged between the first heat-sealing film-clamping wheel (65) and the power output end of the rotating motor (68), and the rotating motor (68) passes through the rotating shaft of the first rotating plate (62) to rotate. The first heat-sealing film clamping wheel (65) is driven to rotate by a gear transmission group (67); a linkage structure (69) is arranged between the first rotating plate (62) and the second rotating plate (63) for making the two plates approach or move away from each other; a clamping driving structure (64) is arranged on the upper surface of the frame plate (61) for driving the first rotating plate (62) to rotate about the rotating axis; the first rotating plate (62) and the second rotating plate (63) are driven by the clamping driving structure (64) through the transmission of the linkage structure (69) to rotate toward each other; a loosening driving structure (610) is also installed on the frame plate (61) for driving the first rotating plate (62) and the second rotating plate (63) to move away from each other.

5. The medium-speed tray packaging machine according to claim 4, characterized in that: The clamping drive structure (64) comprises a fixing seat (641) fixedly mounted on the frame plate (61), a guide column (642) being mounted on the fixing seat (641), a third transmission plate (644) being fixedly mounted on the bottom surface of the first rotating plate (62), a baffle plate (645) being fixedly mounted on the guide column (642), and a second spring (643) being arranged between the baffle plate (645) and the third transmission plate (644); The linkage structure (69) includes a first fixed block (691) fixedly arranged near the end of the second rotating plate (63), and also includes a second fixed block (693) arranged on a side of the second rotating plate (63) near the first rotating plate (62), the first fixed block (691) is provided with a transmission groove (692), and the upper surface of the end of the second fixed block (693) is provided with a first transmission wheel (694) located in the transmission groove (692).

6. The medium-speed tray packaging machine according to claim 4, characterized in that: The loosening drive structure (610) comprises a loosening drive motor (6103) fixedly mounted on the inner bottom surface of the frame plate (61); a rotating shaft of the loosening drive motor (6103) passes through the frame plate (61) to the top thereof; a cam (6102) is mounted on the rotating shaft of the loosening drive motor (6103); and a second transmission wheel (6101) adapted to the cam (6102) is fixedly mounted on the upper surface of the second rotating plate (63).

7. The medium-speed tray packaging machine according to claim 4, characterized in that: Two groups of film-drawing assemblies are respectively arranged on the upper surface of the frame plate (61), and are respectively located at the entrance and exit of the first heat-sealing film-clamping wheel (65) and the second heat-sealing film-clamping wheel (66), each group of film-drawing assemblies includes two film-drawing wheels (611), the power shaft of the rotating motor (68) is connected to one of the film-drawing wheels (611) in each group of film-drawing assemblies through a driving chain, a guide plate (9) is arranged on one side of the film-drawing wheel (611) at the entrance, and a cover plate (612) for covering is also installed on the frame plate (61); It also includes a film-pulling tension control component (613) for driving the two film-pulling wheels (611) in each group of film-pulling components to move toward or away from each other, the film-pulling tension control component (613) including an eccentric shaft (6131) rotatably mounted on the frame plate (61), one of the film-pulling wheels (611) being mounted on the eccentric shaft (6131), a clamping plate (6132) being fixedly mounted on the outer surface of the other end of the eccentric shaft (6131), a clamping block (6133) located on one side of the other end of the eccentric shaft (6131) being fixedly mounted on the bottom surface of the frame plate (61), and when the clamping plate (6132) is clamped into the clamping block (6133), one of the film-pulling wheels (611) contacts the other film-pulling wheel (611).

8. The medium-speed tray packaging machine according to claim 1, characterized in that: The heat-sealing cutting device (5) comprises two brackets (51), the inner side surface of each bracket (51) is slidably mounted with a sliding rod (54), the top of the sliding rod (54) is fixedly mounted with a top plate (57), a guide rod (510) is slidably mounted on the top plate (57), a heat-sealing upper mold (53) is mounted at the bottom of the guide rod (510), a first spring (511) is sleeved on the outer surface of the guide rod (510), a cutter (58) is fixedly mounted on the inner bottom surface of the top plate (57), and when in use, the cutter (58) ) cuts off the cylindrical bag through the avoidance groove in the middle of the heat-sealing upper mold (53), a heat-sealing lower mold (52) is slidably installed on the sliding rod (54), and a transmission structure (56) is arranged below the heat-sealing lower mold (52) to drive the heat-sealing lower mold (52) and the heat-sealing upper mold (53) to move closer to or away from each other, and also includes a driving cylinder (55), the power output end of the driving cylinder (55) is connected to the power input end of the transmission structure (56), and a pressure plate (512) is fixedly installed on the side of the top plate (57).

9. The medium-speed tray packaging machine according to claim 8, characterized in that: The transmission structure (56) includes a fixed frame (561) installed between the two brackets (51), a rotating rod (562) is rotatably installed between the two mounting seats of the fixed frame (561), a first connecting rod (563) is fixedly installed in the middle of the rotating rod (562), the other end of the first connecting rod (563) is hinged to the power output end of the driving cylinder (55), both ends of the rotating rod (562) are fixedly installed with a first transmission plate (564), the two ends of each of the first transmission plates (564) are respectively rotatably installed with a second connecting rod (565) and a third connecting rod (566), the other end of each of the second connecting rods (565) is hinged to the heat-sealing lower mold (52), a connecting plate (567) is fixedly installed between the bottom surfaces of the two sliding rods (54), and each of the third connecting rods (566) is hinged to the connecting plate (567).

10. The medium-speed tray packaging machine according to claim 8, characterized in that: The heat-sealing and cutting device (5) further comprises an angle-inserting structure (59), wherein the angle-inserting structure (59) comprises a slider (591) slidably mounted on the top of each bracket (51), an angle-inserting rod (592) being fixedly mounted on the slider (591), and an angle-inserting motor (593), a second transmission plate (594) being fixedly mounted on the rotating shaft of the angle-inserting motor (593), fourth connecting rods (595) being rotatably mounted at both ends of the upper surface of the second transmission plate (594), and the other end of each fourth connecting rod (595) being transmission-connected to the slider (591) on the same side.

Images