A film laminating packaging machine and a film laminating packaging method

Abstract

The present invention relates to the field of packaging equipment, and discloses a film laminating packaging machine and a film laminating packaging method. A film laminating packaging machine includes a packaging table, a lower film device and a material pushing device; a lower film through hole through which the packaging film can pass from top to bottom is provided on the packaging table; the lower film device includes a negative pressure film sucking device, and the negative pressure film sucking device includes a negative pressure film sucker and a negative pressure generating device for generating negative pressure. The negative pressure film sucker has a film sucking inner cavity and a film sucking port communicating with the film sucking inner cavity. The negative pressure generating device is communicated with the film sucking inner cavity, and the film sucking port is located below the lower film through hole; the material pushing device includes a material pushing driving rotating motor and a first material pushing transmission member, and the first material pushing transmission member is a material pushing transmission synchronous belt, a material pushing transmission lead screw or a material pushing transmission rack; or, the material pushing device includes a material pushing driving linear motor; the material pushing rod is arranged on the first material pushing transmission member or the material pushing driving linear motor. Beneficial effects: The packaging speed of the film laminating packaging machine is improved, and the packaging efficiency and economic benefits are increased.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, and particularly to a film laminating packaging machine and a film laminating packaging method. Background Art

[0002] In many production fields, such as the cosmetics field, the tobacco manufacturing field, etc., after the products are formed and meet the standards for external sales, in order to protect the products and reduce the probability of damage during the circulation process, the products are usually placed in packaging boxes of appropriate specifications for packaging. Finally, the packaging boxes containing the products are placed on a film laminating packaging machine, and a transparent packaging film is coated on the packaging boxes to protect the packaging boxes and the products and increase the aesthetic degree.

[0003] The film laminating packaging machine includes a packaging film conveying mechanism, a feeding mechanism, a rear side film sealing mechanism, and a side film sealing mechanism. The packaging film conveying mechanism includes a film feeding device and a film lowering device. The film lowering device is used to vertically convey the packaging film downward. The feeding mechanism conveys the materials to the film lowering device, so that the materials can push against the packaging film and enter the rear side film sealing mechanism for rear side film sealing, and finally enter the side film sealing mechanism for side film sealing.

[0004] The film lowering device includes two film lowering rods arranged above the packaging table. There is a film lowering through hole on the packaging table. The packaging film passes through between the two film lowering rods and the film lowering through hole. There is a film blowing tube on the film lowering rod, which can blow obliquely downward at the packaging film to convey the packaging film to the film lowering through hole. The feeding mechanism includes a material pushing device, and the material pushing device is used to push the materials to the film lowering device. In the prior art, the material pushing device drives a crank, a cam and other transmission parts through a material pushing driving rotating motor to drive the material pushing rod to push the materials. The working efficiency of the film lowering device and the material pushing device is the main factor determining the packaging efficiency of the film laminating packaging machine.

[0005] However, the existing film lowering device only relies on the film blowing tube to blow air to drive the packaging film to be conveyed downward, and the conveying speed of the packaging film is relatively slow. The material pushing device drives the material pushing rod to push the materials through transmission parts such as a crank and a cam, and the upper limit of the frequency of reciprocating the material pushing rod is relatively low, and it is very difficult to further increase the material pushing speed and frequency. Therefore, the existing film laminating packaging machine has the problem of low packaging efficiency. Summary of the Invention

[0006] The main object of the present invention is to provide a film laminating packaging machine, aiming to solve the technical problem of low packaging efficiency in the prior art.

[0007] To achieve the above object, the present invention provides a film laminating packaging machine, which includes a packaging table, a lower film device, and a material pushing device; a lower film through hole through which the packaging film can pass from top to bottom is provided on the packaging table; the lower film device includes a negative pressure film sucking device, the negative pressure film sucking device includes a negative pressure film sucker and a negative pressure generating device for generating negative pressure, the negative pressure film sucker has a film sucking inner cavity and a film sucking port communicating with the film sucking inner cavity, the negative pressure generating device is communicated with the film sucking inner cavity, and the film sucking port is located below the lower film through hole, so that the negative pressure film sucker can adsorb the packaging film passing through the lower film through hole to drive the packaging film to be conveyed downward; the material pushing device includes a material pushing rod and a material pushing driving device, the material pushing driving device includes a material pushing driving rotary motor and a first material pushing transmission member, the first material pushing transmission member is a material pushing transmission synchronous belt, a material pushing transmission lead screw, or a material pushing transmission rack, the material pushing rod is arranged on the first material pushing transmission member, the first material pushing transmission member is in transmission connection with the material pushing driving rotary motor, and the material pushing driving rotary motor is arranged on the packaging table; or, the material pushing driving device includes a material pushing driving linear motor, the material pushing driving linear motor is arranged on the packaging table, the material pushing driving linear motor includes a material pushing motor slide rail and a material pushing motor slider slidably connected to the material pushing motor slide rail, the material pushing motor slide rail extends along the conveying direction of the material, and the material pushing rod is arranged on the material pushing motor slider.

[0008] The beneficial effects of the present invention are as follows: The negative pressure film sucking device generates negative pressure to attract the packaging film in the positive pressure space to quickly descend, so that the film feeding speed of the packaging film is significantly increased. For the material pushing device, by driving the material pushing transmission synchronous belt, the material pushing transmission lead screw, or the material pushing transmission rack through the material pushing driving rotary motor or directly driving the material pushing rod to reciprocate in the conveying direction of the material through the material pushing driving linear motor, the reciprocating frequency and speed of the material pushing rod can be significantly increased. When the film feeding speed of the packaging film and the reciprocating frequency and speed of the material pushing rod are both significantly increased, the packaging speed of the film laminating packaging machine is also significantly increased, which is beneficial to improving the packaging efficiency and economic benefits.

[0009] Preferably, the negative pressure film sucker includes a first film sucking plate and a second film sucking plate, and a plurality of film sucking plate cushion strips connected end to end in sequence are arranged between the first film sucking plate and the second film sucking plate. The first film sucking plate, the second film sucking plate, and the plurality of film sucking plate cushion strips enclose to form a film sucking inner cavity and a film sucking port facing upward.

[0010] Preferably, the film sucking port is arranged directly below the lower film through hole, and the projection of the lower film through hole on the horizontal plane is located within the projection of the film sucking port on the horizontal plane.

[0011] Preferably, the lower film device also includes two lower film rods, which are located above the lower film through-hole, and extend in a horizontal direction perpendicular to the material conveying direction. The two lower film rods are arranged at intervals along the material conveying direction so that the packaging film can pass through between the two lower film rods; a plurality of film blowing tubes are provided on the lower sides of the two lower film rods, and the film blowing tubes are connected to a blowing device. An air outlet is provided at the lower end of the film blowing tube, and the air outlet is obliquely downward toward the packaging film, so that the blowing device can blow the packaging film obliquely downward through the air outlet of the film blowing tube to drive the packaging film to be conveyed downward.

[0012] Preferably, the pusher drive device includes a pusher drive linear motor, and the pusher drive linear motor is a magnetic levitation linear motor.

[0013] Preferably, the film packaging machine also includes a feeding mechanism, a rear film sealing mechanism and a side film sealing mechanism, the feeding mechanism includes a pushing device, the feeding mechanism, the lower film device, the rear film sealing mechanism and the side film sealing mechanism are arranged in sequence along the conveying direction of the material; the film packaging machine also includes a control device, the feeding mechanism, the lower film device, the rear film sealing mechanism and the side film sealing mechanism are all communicated with the control device, and the push rod drive device is communicated with the control device.

[0014] Preferably, the feeding mechanism includes a feeding rack, a feeding baffle assembly and a feeding baffle adjusting device; the feeding rack is arranged on the packaging table, and a feeding drive device and a feeding conveyor belt connected by transmission are provided on the feeding baffle assembly; the feeding baffle assembly includes two feeding baffles, the two feeding baffles extend along the length direction of the feeding conveyor belt, and the two feeding baffles are arranged side by side and spaced above the conveying surface of the feeding conveyor belt to form a feeding channel between the two feeding baffles; the feeding baffle adjusting device includes a feeding baffle adjusting motor and a feeding baffle adjusting sensor connected by transmission The feeding baffle adjustment motor is communicatively connected to the control device, and the two feeding baffles are both arranged on the feeding baffle adjustment transmission assembly. The feeding baffle adjustment motor can drive the feeding baffle adjustment transmission assembly to drive the two feeding baffles to move closer to or away from each other along the width direction of the feeding conveyor belt to adjust the width of the feeding channel; a pushing platform is provided between the feeding conveyor belt and the lower film through-hole, and the pushing platform can be used to receive the material falling from the feeding conveyor belt, and the pushing device can push the material on the pushing platform through the lower film through-hole and push it to the rear film sealing mechanism.

[0015] Preferably, the rear side film sealing mechanism includes a material pressing device, and the material pressing device includes a material pressing plate and a material pressing plate adjusting device; the material pressing plate is arranged above the packaging table to form a material pressing channel for the material and the packaging film to pass through between the material pressing plate and the packaging table, and the material pressing plate can tightly press the packaging film on the upper side of the material onto the material; the material pressing plate adjusting device includes a material pressing plate adjusting motor and a material pressing plate adjusting transmission assembly that are drivingly connected, the material pressing plate adjusting motor is communicatively connected to the control device, the material pressing plate is arranged on the material pressing plate adjusting transmission assembly, and the material pressing plate adjusting motor can drive the material pressing plate adjusting transmission assembly to drive the material pressing plate to move in the vertical direction to adjust the height of the material pressing channel; the material pushing device can push the material wrapped with the packaging film into the material pressing channel, and the rear side film sealing mechanism can perform rear side film sealing on the material.

[0016] Preferably, the side film sealing mechanism includes a film hooking device, and the film hooking device includes a film hooking driving device, a film hooking transmission assembly and two film hooking rods; the film hooking driving device is arranged on the packaging table and is communicatively connected to the control device, and the two film hooking rods are arranged at intervals in the horizontal direction perpendicular to the material conveying direction; the film hooking transmission assembly includes a film hooking synchronous transmission member and two first film hooking transmission members, the two film hooking rods are respectively drivingly connected to the two first film hooking transmission members, both of the two first film hooking transmission members are drivingly connected to the film hooking synchronous transmission member, and the film hooking synchronous transmission member is drivingly connected to the film hooking driving device. The film hooking driving device can drive the two film hooking rods to move synchronously in the same direction along the material conveying direction through the film hooking synchronous transmission member and the two first film hooking transmission members.

[0017] The present invention also provides a film covering packaging method, including: accelerating the falling of the packaging film by negative pressure adsorption during the process of the packaging film being conveyed downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0019] Figure 1 is a schematic structural diagram of the film covering packaging machine in the embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of the material loading mechanism and the film feeding device in the embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram of the material pushing driving rotating motor, the first material pushing transmission member and the material pushing rod in the embodiment of the present invention;

[0022] Figure 4Schematic structural diagram of the negative pressure film suction device in the embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the positional relationship among the packaging film, the lower film rod, the packaging table and the negative pressure film suction device in the embodiment of the present invention;

[0024] Figure 6 Schematic structural diagram of the loading mechanism in the embodiment of the present invention;

[0025] Figure 7 Schematic structural diagram of the loading mechanism from another angle in the embodiment of the present invention;

[0026] Figure 8 is Figure 7 partial enlarged view of part A in;

[0027] Figure 9 is Figure 7 partial enlarged view of part B in;

[0028] Figure 10 Schematic structural diagram of the material pressing structure and the material pressing wheel adjusting device in the embodiment of the present invention;

[0029] Figure 11 Schematic structural diagram of the material pressing structure and the material pressing wheel adjusting device in the embodiment of the present invention (the outer casings on the first material pressing wheel adjusting structure and the second material pressing wheel adjusting structure are not shown);

[0030] Figure 12 Schematic structural diagram of the ejecting driving device and the pushing table in the embodiment of the present invention;

[0031] Figure 13 Schematic diagram of the positional relationship among the loading rack, the pushing table and the pushing rod when no material is ejected in the embodiment of the present invention;

[0032] Figure 14 Schematic diagram of the positional relationship among the loading rack, the pushing table and the pushing rod when pushing the material in the embodiment of the present invention;

[0033] Figure 15 Schematic structural diagram of the rear side film sealing mechanism in the embodiment of the present invention;

[0034] Figure 16 is Figure 15 partial enlarged view of part C in;

[0035] Figure 17 Schematic structural diagram of the rear side film sealing device and the material pressing device in the embodiment of the present invention;

[0036] Figure 18 Schematic structural diagram of the rear side film sealing device and the material pressing device from another angle in the embodiment of the present invention;

[0037] Figure 19 Schematic diagram of the structure of the pressure plate and the pressure plate mounting plate in the embodiment of the present invention;

[0038] Figure 20 Schematic diagram of the structure of the film sealing plate, the swing plate transmission member, the swing plate stopper and the swing plate stopper adjusting device in the embodiment of the present invention;

[0039] Figure 21 Schematic diagram of the structure of the rear film sealing mechanism in the embodiment of the present invention after the material enters the pressure feeding channel and before film sealing;

[0040] Figure 22 Schematic diagram of the structure of the top film plate of the rear film sealing mechanism when lifting the film in the embodiment of the present invention;

[0041] Figure 23 Schematic diagram of the structure of the rear film sealing mechanism when the film sealing plate is about to touch the top film plate during film sealing in the embodiment of the present invention;

[0042] Figure 24 Schematic diagram of the structure of the rear film sealing mechanism when the film sealing plate heat-seals the upper packaging film and the lower packaging film in the embodiment of the present invention;

[0043] Figure 25 Schematic diagram of the structure of the side film sealing mechanism in the embodiment of the present invention;

[0044] Figure 26 Schematic diagram of the structure of the side film sealing mechanism from another angle in the embodiment of the present invention;

[0045] Figure 27 Schematic diagram of the structure of the film hooking device and the adjusting plate in the embodiment of the present invention;

[0046] Figure 28 Schematic diagram of the structure of the film hooking synchronous transmission member, the first film hooking transmission bevel gear, the film hooking bevel gear sliding sleeve, the film hooking transmission gear and the second film hooking transmission bevel gear in the embodiment of the present invention;

[0047] Figure 29 Schematic diagram of the positional relationship among the material, the film hooking rod and the film folding baffle during rear film folding in the process of side film sealing in the embodiment of the present invention;

[0048] Figure 30 Schematic diagram of the communication connection between the control device and the pushing material driving device, the negative pressure generating device, the feeding driving device, the feeding baffle adjusting motor, the pressure plate adjusting motor, the top film driving device, the film sealing driving device, the swing plate stopper adjusting motor, the film hooking driving device, the adjusting plate adjusting motor, and the side film sealing conveying motor in the embodiment of the present invention.

[0049] In the attached drawings: 1 - feeding mechanism, 11 - feeding rack, 111 - feeding driving device, 112 - feeding conveyor belt, 12 - feeding baffle, 121 - feeding channel, 13 - feeding baffle adjusting device, 131 - feeding baffle adjusting motor, 132 - feeding baffle adjusting transmission assembly, 1321 - feeding baffle adjusting lead screw, 1322 - feeding baffle adjusting nut, 1323 - feeding baffle adjusting slider, 1324 - feeding baffle adjusting guide rail, 1325 - second feeding baffle adjusting synchronous pulley, 1326 - feeding baffle adjusting synchronous belt, 1327 - connecting piece, 1328 - feeding baffle adjusting rotating shaft, 1329 - first feeding baffle adjusting synchronous pulley, 133 - synchronous belt tension adjusting device, 1331 - tension pulley mounting plate, 13311 - tension pulley adjusting long hole, 13312 - tension pulley adjusting screw hole, 1332 - tension pulley mounting shaft, 1333 - tension pulley, 14 - material pressing structure, 141 - material pressing wheel mounting seat, 142 - material pressing wheel mounting plate, 1421 - material pressing wheel, 143 - first material pressing wheel adjusting structure, 1431 - first material pressing wheel adjusting guide groove, 1432 - first material pressing wheel adjusting lead screw, 1433 - first material pressing wheel adjusting nut, 1434 - first material pressing wheel adjusting motor, 1435 - first material pressing wheel adjusting transmission assembly, 144 - second material pressing wheel adjusting structure, 1441 - second material pressing wheel adjusting guide groove, 1442 - second material pressing wheel adjusting lead screw, 1443 - second material pressing wheel adjusting nut, 1444 - second material pressing wheel adjusting motor, 1445 - second material pressing wheel adjusting transmission assembly, 145 - material pressing rack, 151 - material pushing table, 152 - material pushing driving device, 16 - material pushing device, 161 - material pushing rod, 162 - material pushing driving linear motor, 1621 - material pushing motor slide rail, 1622 - material pushing motor slider, 163 - material pushing driving rotating motor, 164 - material pushing transmission lead screw, 165 - material pushing transmission synchronous belt, 166 - material pushing transmission rack, 2 - lower film device, 21 - negative pressure film sucking device, 211 - negative pressure film sucker, 2111 - first film sucking plate, 2112 - second film sucking plate, 2113 - film sucking plate cushion strip, 2114 - film sucking port, 2115 - negative pressure pipe interface, 2116 - film sucking inner cavity, 212 - negative pressure generating device, 22 - lower film through hole, 23 - lower film rod, 231 - film blowing pipe, 2311 - air outlet, 3 - rear side film sealing mechanism, 31 - material pressing plate, 311 - material pressing channel, 312 - material pressing plate mounting plate, 3121 - guiding block, 3122 - material pressing spring, 313 - material pressing plate adjusting device, 3131 - material pressing plate adjusting motor, 3132 - material pressing plate adjusting transmission assembly, 31321 - material pressing plate adjusting lead screw, 313211 - second material pressing plate adjusting helical gear, 31322 - material pressing plate adjusting nut, 31323 - material pressing plate adjusting transmission rod, 313231 - first material pressing plate adjusting helical gear, 314 - material pressing plate guiding plate, 3141 - material pressing plate guiding groove, 32 - film pushing device, 321 - film pushing driving device322 - Top film plate, 3221 - Avoidance groove of top film plate, 331 - Film sealing drive device, 332 - Film sealing plate, 3321 - Heating plate, 3322 - Mounting plate of film sealing plate, 333 - Adjusting device for swing plate stopper, 3331 - Fixed seat of swing plate stopper motor, 3332 - Adjusting motor for swing plate stopper, 3333 - Adjusting lead screw of swing plate stopper, 3334 - Adjusting nut of swing plate stopper, 3335 - Swing plate stopper, 334 - Synchronous pulley for driving film sealing plate, 335 - Synchronous belt for driving film sealing plate, 336 - Guide rail of film sealing plate, 337 - Transmission part of swing plate, 3371 - Fixed part, 3372 - Transmission part, 4 - Side film sealing mechanism, 41 - Hook film drive device, 411 - Hook film transmission assembly, 4111 - Synchronous transmission part of hook film, 41111 - Second bevel gear for hook film transmission, 41112 - Slide sleeve of bevel gear for hook film, 4112 - First transmission part of hook film, 41121 - First bevel gear for hook film transmission, 4113 - Rack for hook film transmission, 4121 - First driving wheel for hook film, 4122 - Second driving wheel for hook film, 4123 - Transmission belt for hook film, 413 - Mounting plate for hook film transmission, 414 - Guide rail for hook film transmission, 415 - Slide block for hook film transmission, 42 - Hook film rod, 421 - Hook film part, 43 - Adjusting plate, 431 - Film folding assembly, 4311 - Film folding baffle, 432 - Adjusting device for adjusting plate, 4321 - Adjusting motor for adjusting plate, 4322 - Adjusting lead screw for adjusting plate, 4323 - Adjusting nut for adjusting plate, 4411 - Side film sealing and conveying assembly, 44111 - Active conveying wheel for side film sealing, 441111 - First bevel gear for side film sealing and conveying, 44112 - Driven conveying wheel for side film sealing, 44113 - Conveyor belt for side film sealing, 4412 - Motor for side film sealing and conveying, 442 - Ironing plate for side film sealing, 443 - Synchronous rod for side film sealing and conveying, 4431 - Second bevel gear for side film sealing and conveying, 5 - Film feeding device, 10 - Packaging table, 20 - Material, 201 - Rear side wall, 30 - Packaging film, 301 - Upper packaging film, 302 - Lower packaging film.

[0050] The realization of the purpose, functional features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0052] It should be noted that if there are directional indications involved in the embodiments of the present invention, such as up, down, left, right, front, back, etc., these directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0053] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, these descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0054] As Figures 1 to 30 shown, a film laminating packaging machine includes a packaging table 10, a lower film device 2, and a material pushing device 16; a lower film through hole 22 through which a packaging film 30 can pass from top to bottom is provided on the packaging table 10; the lower film device 2 includes a negative pressure film sucking device 21, and the negative pressure film sucking device 21 includes a negative pressure film sucker 211 and a negative pressure generating device 212 for generating negative pressure. The negative pressure film sucker 211 has a film sucking inner cavity 2116 and a film sucking port 2114 communicating with the film sucking inner cavity 2116. The negative pressure generating device 212 is communicated with the film sucking inner cavity 2116. The film sucking port 2114 is located below the lower film through hole 22, so that the negative pressure film sucker 211 can adsorb the packaging film 30 passing through the lower film through hole 22 to drive the packaging film 30 to be conveyed downward; the material pushing device 16 includes a material pushing rod 161 and a material pushing driving device. The material pushing driving device includes a material pushing driving rotating motor 163 and a first material pushing transmission member. The first material pushing transmission member is a material pushing transmission synchronous belt 165, a material pushing transmission lead screw 164, or a material pushing transmission rack 166. The material pushing rod 161 is arranged on the first material pushing transmission member, and the first material pushing transmission member is in transmission connection with the material pushing driving rotating motor 163. The material pushing driving rotating motor 163 is arranged on the packaging table 10; or, the material pushing driving device includes a material pushing driving linear motor 162. The material pushing driving linear motor 162 is arranged on the packaging table 10. The material pushing driving linear motor 162 includes a material pushing motor slide rail 1621 and a material pushing motor slider 1622 slidably connected to the material pushing motor slide rail 1621. The material pushing motor slide rail 1621 extends along the conveying direction of the material 20, and the material pushing rod 161 is arranged on the material pushing motor slider 1622.

[0055] The negative pressure film sucking device 21 generates negative pressure to attract the packaging film 30 in the positive pressure space to quickly descend, significantly increasing the downward film speed of the packaging film 30. The pusher device 16 drives the pusher drive synchronous belt 165, the pusher drive lead screw 164, or the pusher drive rack 166 through the pusher drive rotating motor 163, or directly drives the pusher rod 161 to reciprocate in the conveying direction of the material 20 through the pusher drive linear motor 162, which can significantly increase the reciprocating frequency and speed of the pusher rod 161. When both the downward film speed of the packaging film 30 and the reciprocating frequency and speed of the pusher rod 161 are significantly increased, the packaging speed of this film covering packaging machine is also significantly increased, which is beneficial to improving packaging efficiency and economic benefits.

[0056] The pusher drive device can drive the pusher rod 161 to move along the conveying direction of the material 20, so as to push the material 20 on the packaging table 10 from one side of the downward film through hole 22 to the other side and cover the material 20 with the packaging film 30.

[0057] In this embodiment, the conveying direction of the material 20 extends along the length direction of the packaging table 10.

[0058] In some specific embodiments, referring to Figure 4 , the negative pressure film sucker 211 includes a first film sucking plate 2111 and a second film sucking plate 2112. A plurality of film sucking plate cushion strips 2113 are arranged between the first film sucking plate 2111 and the second film sucking plate 2112 and are connected end to end in sequence. The first film sucking plate 2111, the second film sucking plate 2112, and the plurality of film sucking plate cushion strips 2113 enclose a film sucking inner cavity 2116 and a film sucking port 2114 facing the upper side.

[0059] Specifically, three film sucking plate cushion strips 2113 are arranged between the first film sucking plate 2111 and the second film sucking plate 2112. Two of the film sucking plate cushion strips 2113 extend along the vertical direction and are arranged at intervals in the horizontal direction. The other film sucking plate cushion strip 2113 extends along the horizontal direction, and its two ends are respectively connected to the lower ends of the two film sucking plate cushion strips 2113 extending along the vertical direction. Therefore, the first film sucking plate 2111, the second film sucking plate 2112, and the three film sucking plate cushion strips 2113 clamped between the first film sucking plate 2111 and the second film sucking plate 2112 enclose a film sucking inner cavity 2116 and a film sucking port 2114 facing the upper side.

[0060] The negative pressure generating device 212 is connected to the negative pressure film sucker 211 through a negative pressure air suction pipe. A negative pressure pipe interface 2115 communicating with the film sucking inner cavity 2116 is provided on the first adsorption plate or the second adsorption plate. The negative pressure film sucker 211 is connected to the inside of the negative pressure generating device 212 through the negative pressure pipe interface 2115.

[0061] The negative pressure generating device 212 is specifically a vacuum pump, an air compressor, etc.

[0062] In some other embodiments, the shape of the negative pressure film sucking device 211 can be other shapes, such as a cube, a sphere, etc.

[0063] In some specific embodiments, referring to Figure 5 , the film sucking port 2114 is disposed directly below the lower film through hole 22, and the projection of the lower film through hole 22 on the horizontal plane is located within the projection of the film sucking port 2114 on the horizontal plane, which is beneficial to the negative pressure film sucking device 21 to more smoothly adsorb the packaging film 30, so that the packaging film 30 is not easily offset during the lower film process, and the lower film efficiency is improved.

[0064] In some specific embodiments, referring to Figure 2 and Figure 5 , the lower film device 2 further includes two lower film rods 23. The two lower film rods 23 are located above the lower film through hole 22. The lower film rods 23 extend along a horizontal direction perpendicular to the conveying direction of the material 20. The two lower film rods 23 are arranged at intervals along the conveying direction of the material 20, so that the packaging film 30 can pass through between the two lower film rods 23; a plurality of film blowing tubes 231 are provided on the lower sides of the two lower film rods 23. The film blowing tubes 231 are communicated with a blowing device. The lower ends of the film blowing tubes 231 are provided with air outlets 2311. The air outlets 2311 are obliquely downwardly directed towards the packaging film 30, so that the blowing device can blow the packaging film 30 obliquely downwardly through the air outlets 2311 of the film blowing tubes 231 to drive the packaging film 30 to be conveyed downward.

[0065] Specifically, the air outlets 2311 of the film blowing tubes 231 on one of the lower film rods 23 are lower than the air outlets 2311 of the film blowing tubes 231 on the other lower film rod 23, so that the packaging film 30 can be conveyed downward more smoothly.

[0066] The two lower film rods 23 are arranged at intervals, and the packaging film 30 passes through between the two lower film rods 23 from top to bottom, which can guide the packaging film 30, so that the packaging film 30 is not easily offset during the lower film process, and the packaging efficiency is improved.

[0067] Under the dual action of the negative pressure film sucking device 21 and the film blowing tubes 231 on the lower film rods 23, the lower film speed of the packaging film 30 is significantly increased compared with the case of only using the film blowing tubes 231 for lower film or only using the negative pressure film sucking device 21 for lower film, which is beneficial to further improving the packaging efficiency of the packaging film 30.

[0068] In some specific embodiments, referring to Figure 2 and Figure 6 , the material pushing driving device includes a material pushing driving linear motor 162, and the material pushing driving linear motor 162 is a magnetic levitation linear motor.

[0069] The maglev linear motor has the advantages of high speed, high acceleration, and fast response. It not only helps to improve the feeding and packaging efficiency, but also has the advantage of being maintenance-free, so as to avoid delaying the packaging progress due to subsequent maintenance and further improve the economic efficiency.

[0070] In some other embodiments, the feeding drive device can also adopt other linear motors such as a coreless flat linear motor and a tubular linear motor.

[0071] In some specific embodiments, referring to Figure 1 , the film laminating packaging machine further includes a film feeding device 5. The film feeding device 5 is mainly used for laterally conveying the packaging film 30, and the packaging film 30 passes through the film feeding device 5 and the lower film device 2 in sequence.

[0072] In some specific embodiments, the feeding drive rotary motor 163 is a servo motor or a stepper motor. Both the servo motor and the stepper motor have the characteristics of high precision, which is beneficial to accurately control the feeding stroke of the feeding rod 161 and further improve the feeding in-place rate and efficiency.

[0073] Taking the facial mask box as an example, the size of the facial mask box is 180mm×135mm×25mm. The packaging efficiency of the existing film laminating packaging machine for such facial mask boxes is 40 - 65 pieces / minute, while the packaging efficiency can reach 80 - 100 pieces / minute when using the film laminating packaging machine in this embodiment. Taking the cream box as an example, the size of the cream box is 170mm×50mm×50mm. The packaging efficiency of the existing film laminating packaging machine for such cream boxes is 50 - 70 pieces / minute, while the packaging efficiency can reach 90 - 110 pieces / minute when using the film laminating packaging machine in this embodiment.

[0074] In some specific embodiments, referring to Figure 1 , the film laminating packaging machine further includes a loading mechanism 1, a rear side film sealing mechanism 3, and a side film sealing mechanism 4. The loading mechanism 1 includes a feeding device 16. The loading mechanism 1, the lower film device 2, the rear side film sealing mechanism 3, and the side film sealing mechanism 4 are arranged in sequence along the conveying direction of the material 20. The film laminating packaging machine further includes a control device. The loading mechanism 1, the lower film device 2, the rear side film sealing mechanism 3, and the side film sealing mechanism 4 are all communicatively connected to the control device, and the push rod drive device is communicatively connected to the control device.

[0075] In some specific embodiments, referring to Figures 6 to 14The feeding mechanism 1 includes a feeding rack 11, a feeding baffle assembly and a feeding baffle adjusting device 13; the feeding rack 11 is arranged on the packaging table 10, and a feeding drive device 111 and a feeding conveyor belt 112 connected by transmission are provided on the feeding rack 11; the feeding baffle assembly includes two feeding baffles 12, and the two feeding baffles 12 extend along the length direction of the feeding conveyor belt 112. The two feeding baffles 12 are arranged side by side and spaced above the conveying surface of the feeding conveyor belt 112 to form a feeding channel 121 between the two feeding baffles 12; the feeding baffle adjusting device 13 includes a feeding baffle adjusting motor 131 and a feeding baffle adjusting transmission assembly 132 connected by transmission. The material baffle adjustment motor 131 is communicatively connected to the control device, and the two loading baffles 12 are both arranged on the loading baffle adjustment transmission assembly 132. The loading baffle adjustment motor 131 can drive the loading baffle adjustment transmission assembly 132 to drive the two loading baffles 12 to move closer to or away from each other along the width direction of the loading conveyor belt 112 to adjust the width of the loading channel 121; a pushing platform 151 is provided between the loading conveyor belt 112 and the lower film through hole 22, and the pushing platform 151 can be used to receive the material 20 falling from the loading conveyor belt 112, and the pushing device 16 can push the material 20 on the pushing platform 151 through the lower film through hole 22 and push it into the rear film sealing mechanism 3.

[0076] In this feeding mechanism 1, when the width of the feeding channel 121 needs to be adjusted to package materials 20 of different widths, a technician only needs to input the relevant parameters into the control device. The control device then activates the feeding baffle adjustment motor 131, which drives the feeding baffle adjustment transmission assembly 132 to move. The feeding baffle adjustment transmission assembly 132 drives the feeding baffle 12 to move along the width direction of the feeding conveyor belt 112, thereby adjusting the width of the feeding channel 121. The feeding mechanism 1 requires fewer adjustments during the process of adjusting the width of the feeding channel 121. The overall process is simple to operate, less time-consuming, and more efficient, which helps improve packaging efficiency.

[0077] In some specific embodiments, the feeding baffle adjusting transmission assembly 132 includes a feeding baffle adjusting lead screw 1321 and a feeding baffle adjusting nut 1322. The feeding baffle adjusting lead screw 1321 extends along the width direction of the feeding conveyor belt 112 and is rotatably connected to the feeding rack 11. The feeding baffle adjusting nut 1322 is threadedly connected to the feeding baffle adjusting lead screw 1321, and the feeding baffle 12 is fixedly connected to the feeding baffle adjusting nut 1322. A feeding baffle adjusting guide rail 1324 is fixedly connected to the feeding rack 11. The feeding baffle adjusting guide rail 1324 extends along the width direction of the feeding conveyor belt 112. A feeding baffle adjusting slider 1323 is slidably connected to the feeding baffle adjusting guide rail 1324. The feeding baffle adjusting nut 1322 is fixedly connected to the feeding baffle adjusting slider 1323 to guide the feeding baffle adjusting nut 1322 to move along the width direction of the feeding conveyor belt 112 and restrict the feeding baffle adjusting nut 1322 from rotating around the axis of the feeding baffle adjusting lead screw 1321.

[0078] Specifically, the feeding baffle adjusting lead screw 1321, the feeding baffle adjusting nut 1322, the feeding baffle adjusting guide rail 1324 and the feeding baffle adjusting slider 1323 are all arranged on the lower side of the feeding rack 11. The feeding baffle adjusting transmission assembly 132 further includes a connecting assembly, and the connecting assembly includes three connecting members 1327. The three connecting members 1327 are connected end to end in sequence to fixedly connect the feeding baffle adjusting nut 1322 located on the lower side of the feeding rack 11 and the feeding baffle 12 located on the upper side of the feeding rack 11.

[0079] In some other embodiments, the feeding baffle adjusting transmission assembly 132 can adopt motion modules such as a "gear-rack" motion module and a "synchronous belt-synchronous pulley" motion module, as long as it can drive the feeding baffle 12 to move along the width direction of the feeding conveyor belt 112 under the drive of the feeding baffle adjusting motor 131.

[0080] In some specific embodiments, the feeding baffle adjusting transmission assembly 132 includes two feeding baffle adjusting lead screws 1321, two feeding baffle adjusting nuts 1322 and two feeding baffle adjusting sliders 1323. The axes of the two feeding baffle adjusting lead screws 1321 are on the same straight line, and the threads on the two feeding baffle adjusting lead screws 1321 are arranged in opposite directions. The two feeding baffle adjusting nuts 1322 are respectively helically connected to the two feeding baffle adjusting lead screws 1321. The two feeding baffle adjusting nuts 1322 are respectively fixedly connected to the two feeding baffle adjusting sliders 1323. The two feeding baffle adjusting nuts 1322 are respectively fixedly connected to the two feeding baffles 12, so that the feeding baffle adjusting motor 131 can drive the two feeding baffles 12 to move synchronously closer to or away from each other. Synchronously moving the two feeding baffles 12 closer to or away from each other further reduces the time-consuming for adjusting the width of the feeding channel 121.

[0081] Specifically, the two feeding baffles 12 are symmetrically arranged with respect to the midline of the feeding conveyor belt 112, that is, the feeding channel 121 is centered on the feeding conveyor belt 112. The two feeding baffles 12 are synchronously moved by the feeding baffle adjusting drive assembly 132, and the two feeding baffles 12 approach or move away from each other, ensuring that the feeding channel 121 is located in the middle of the feeding conveyor belt 112. Even for materials 20 with different specifications and widths, they can be conveyed in the middle of the feeding conveyor belt 112, which is beneficial to the stable operation of the feeding conveyor belt 112 and prolongs the service life of the feeding conveyor belt 112.

[0082] The feeding baffle adjusting motor 131 can be a servo motor or an asynchronous motor, as long as it can make the feeding conveyor belt 112 operate. The feeding baffle adjusting motor 131 is arranged on the lower side of the feeding frame 11 to improve space utilization.

[0083] In some specific embodiments, the feeding baffle adjusting drive assembly 132 further includes a feeding baffle adjusting rotating shaft 1328. The feeding baffle adjusting rotating shaft 1328 is rotatably connected to the feeding frame 11 and extends along the width direction of the feeding conveyor belt 112. The feeding baffle adjusting rotating shaft 1328 and the feeding baffle adjusting lead screw 1321 are arranged along the length direction of the feeding conveyor belt 112. The feeding baffle adjusting rotating shaft 1328 is coaxially and fixedly connected to the output shaft of the feeding baffle adjusting motor 131. A first feeding baffle adjusting synchronous pulley 1329 is coaxially and fixedly arranged on the feeding baffle adjusting rotating shaft 1328, and a second feeding baffle adjusting synchronous pulley 1325 is coaxially and fixedly arranged on the feeding baffle adjusting lead screw 1321. A feeding baffle adjusting synchronous belt 1326 is wound around the first feeding baffle adjusting synchronous pulley 1329 and the second feeding baffle adjusting synchronous pulley 1325.

[0084] Specifically, the feeding baffle adjusting motor 131, the feeding baffle adjusting rotating shaft 1328, the first feeding baffle adjusting synchronous pulley 1329, the second feeding baffle adjusting synchronous pulley 1325, and the feeding baffle adjusting synchronous belt 1326 are arranged on the lower side of the feeding frame 11. The feeding baffle adjusting lead screw 1321 and the feeding baffle adjusting rotating shaft 1328 are arranged in sequence along the feeding direction of the feeding conveyor belt 112. Both feeding baffle adjusting lead screws 1321 are fixedly connected to the second feeding baffle adjusting synchronous pulley 1325.

[0085] In some specific embodiments, a synchronous belt tension adjusting device 133 is fixedly arranged on the loading rack 11, and the synchronous belt tension adjusting device 133 is located between the rotating shaft and the loading baffle adjusting lead screw 1321; the synchronous belt tension adjusting device 133 includes a tension pulley 1333 and two tension pulley mounting plates 1331. The two tension pulley mounting plates 1331 are arranged at intervals along the width direction of the loading conveyor belt 112. A tension pulley mounting shaft 1332 is arranged on the two tension pulley mounting plates 1331. The tension pulley mounting shaft 1332 is fixedly arranged on the tension pulley mounting plate 1331 in an up-and-down adjustable manner. The tension pulley 1333 is rotatably connected to the tension pulley mounting shaft 1332 and is located between the two tension pulley mounting plates 1331. The loading baffle adjusting synchronous belt 1326 passes through between the two tension pulley mounting plates 1331, so that the tension pulley 1333 can extrude the loading baffle adjusting synchronous belt 1326 to adjust the tension of the loading baffle adjusting synchronous belt 1326. For the convenience of installation, generally the loading baffle adjusting synchronous belt 1326 is slightly longer than its theoretical length, so there will be a certain error and insufficient tension after installation. The synchronous belt tension adjusting device 133 can adjust the tension of the loading baffle adjusting synchronous belt 1326, ensure the transmission efficiency between the first loading baffle adjusting synchronous pulley 1329, the second loading baffle adjusting synchronous pulley 1325 and the loading baffle adjusting synchronous belt 1326, and is beneficial to the stable operation of the loading mechanism 1.

[0086] Specifically, the synchronous belt tension adjusting device 133 is arranged on the lower side of the loading rack 11. The loading baffle adjusting synchronous belt 1326 passes through between the two tension pulley mounting plates 1331. Tension pulley adjusting long holes 13311 are arranged on both of the two tension pulley mounting plates 1331, and the tension pulley adjusting long holes 13311 extend in the vertical direction. The tension pulley mounting shaft 1332 passes through the two tension pulley adjusting long holes 13311 and is located under the loading baffle adjusting synchronous belt 1326. A tension pulley adjusting screw hole 13312 is arranged at the bottom of the tension pulley mounting plate 1331. The tension pulley adjusting screw hole 13312 extends in the vertical direction and communicates with the bottom of the tension pulley adjusting long hole 13311. A tension pulley adjusting screw is screwed into the tension pulley adjusting screw hole 13312. An installation shaft through hole is arranged on the tension pulley mounting shaft 1332. The installation shaft through hole is a smooth hole. The tension pulley adjusting screw passes through the installation shaft through hole and is rotatably connected to the tension pulley mounting shaft 1332. By rotating the tension pulley adjusting screw, the position of the tension pulley mounting shaft 1332 in the vertical direction can be adjusted, so as to adjust the vertical position of the tension pulley 1333 to extrude the loading baffle adjusting synchronous belt 1326 to achieve the purpose of tensioning the loading baffle adjusting synchronous belt 1326.

[0087] In some specific embodiments, the loading baffle adjusting motor 131 is a stepping motor or a servo motor. The stepping motor and the servo motor have positioning functions, and have stable structures and simple operations, and are suitable for use in the loading mechanism 1.

[0088] In some specific embodiments, the feeding structure also includes a pressing structure 14, which includes a pressing frame 145 and a plurality of pressing wheels 1421 arranged on the pressing frame 145; the pressing frame 145 includes a pressing wheel mounting seat 141 and a pressing wheel mounting plate 142 arranged next to the feeding conveyor belt 112, one end of the pressing wheel mounting plate 142 is arranged on the pressing wheel mounting seat 141, and the other end extends to the top of the feeding channel 121, and the pressing wheel mounting plate 142 is rotatably connected to one end of the pressing wheel mounting seat 141 away from the pressing wheel mounting seat 141 with a plurality of pressing wheels 1421, the axis of the pressing wheel 1421 extends along the width direction of the feeding conveyor belt 112, and the plurality of pressing wheels 1421 are arranged along the length direction of the feeding conveyor belt 112, and the pressing wheel 1421 can abut and squeeze the upper side of the material 20 in the feeding channel 121. The pressing structure 14 can press the material 20 on the feeding channel 121, reduce the probability of the material 20 tilting or jumping up, and improve the stability of the material 20 transportation.

[0089] In some specific embodiments, a pressing wheel adjustment device is provided on the side of the feeding conveyor belt 112, and the pressing wheel adjustment device includes a first pressing wheel adjustment structure 143 and a second pressing wheel adjustment structure 144; the first pressing wheel adjustment structure 143 includes a first pressing wheel adjustment motor 1434 and a first pressing wheel adjustment transmission assembly 1435 connected in a transmission manner, and the second pressing wheel adjustment structure 144 is provided on the first pressing wheel adjustment transmission assembly 1435, and the first pressing wheel adjustment motor 1434 can drive the first pressing wheel The adjustment transmission assembly 1435 drives the second pinch wheel adjustment structure 144 to move along the length of the loading conveyor belt 112. The second pinch wheel adjustment structure 144 includes a second pinch wheel adjustment motor 1444 and a second pinch wheel adjustment transmission assembly 1445, which are connected in a transmission manner. The pinch wheel mounting base 141 is mounted on the second pinch wheel adjustment transmission assembly 1445. The second pinch wheel adjustment motor 1444 drives the second pinch wheel adjustment transmission assembly 1445 to move the pinch wheel mounting base 141 vertically. The pinch wheel adjustment device can adjust the position of the pinch wheel 1421 in the vertical direction and along the length of the loading conveyor belt 112 to accommodate materials 20 of different specifications.

[0090] Specifically, the first pressure roller adjusting structure 143 includes a first pressure roller adjusting motor 1434, a first pressure roller adjusting lead screw 1432, a first pressure roller adjusting nut 1433, and a first pressure roller adjusting guide groove 1431. The first pressure roller adjusting guide groove 1431 and the first pressure roller adjusting lead screw 1432 both extend along the length direction of the feeding conveyor belt 112. The first pressure roller adjusting lead screw 1432 and the first pressure roller adjusting nut 1433 are arranged in the first pressure roller adjusting guide groove 1431. The first pressure roller adjusting guide groove 1431 can guide the first pressure roller adjusting nut 1433 to move along the length direction of the feeding conveyor belt 112 and restrict the first pressure roller adjusting nut 1433 from rotating around the axis of the first pressure roller adjusting lead screw 1432. The first pressure roller adjusting motor 1434 is arranged outside the groove body of the first pressure roller adjusting guide groove 1431 and is in transmission connection with the first pressure roller adjusting lead screw 1432. The output shaft of the first pressure roller adjusting motor 1434 is coaxially and fixedly connected with the first pressure roller adjusting lead screw 1432.

[0091] The second pressure roller adjusting structure 144 includes a second pressure roller adjusting motor 1444, a second pressure roller adjusting lead screw 1442, a second pressure roller adjusting nut 1443, and a second pressure roller adjusting guide groove 1441. The second pressure roller adjusting guide groove 1441 and the second pressure roller adjusting lead screw 1442 both extend along the vertical direction. The second pressure roller adjusting lead screw 1442 and the second pressure roller adjusting nut 1443 are arranged in the second pressure roller adjusting guide groove 1441. The second pressure roller adjusting guide groove 1441 can guide the second pressure roller adjusting nut 1443 to move along the vertical direction and restrict the second pressure roller adjusting nut 1443 from rotating around the axis of the second pressure roller adjusting lead screw 1442. The second pressure roller adjusting motor 1444 is arranged outside the groove body of the second pressure roller adjusting guide groove 1441 and is in transmission connection with the second pressure roller adjusting lead screw 1442. The output shaft of the second pressure roller adjusting motor 1444 is coaxially and fixedly connected with the second pressure roller adjusting lead screw 1442.

[0092] In some specific embodiments, the feeding mechanism 1 further includes a material ejecting driving device 152. The material ejecting driving device 152 is fixedly connected to the lower side of the material pushing table 151 and is used to drive the material pushing table 151 to reciprocate along the vertical direction. After the material pushing table 151 receives the material 20 falling from the feeding conveyor belt 112, the material ejecting driving device 152 drives the material 20 to rise to a height position corresponding to the material pushing rod 161. Then, the material pushing driving device can drive the material pushing rod 161 to push the material 20 from one side to the other side of the lower film through hole 22 to wrap the packaging film 30.

[0093] In some specific embodiments, the material ejecting driving device 152 is a servo electric cylinder, and the servo electric cylinder is in communication connection with the control device.

[0094] The servo electric cylinder is communicatively connected to the control device. According to the feeding speed of the feeding conveyor belt 112, the technician inputs corresponding instructions into the control device, so that the action frequency of the servo electric cylinder matches the feeding speed of the feeding conveyor belt 112. At the same time, the control device issues instructions for mutual cooperation to the ejector driving device 152 and the pusher driving device, so that the ejecting frequency and the pushing frequency are properly coordinated to improve the feeding efficiency.

[0095] In some specific embodiments, referring to Figures 15 to 24 , the rear film sealing mechanism 3 includes a material pressing device, and the material pressing device includes a material pressing plate 31 and a material pressing plate adjusting device 313; the material pressing plate 31 is arranged above the packaging table 10 to form a material pressing channel 311 for the material 20 and the packaging film 30 to pass through between the material pressing plate 31 and the packaging table 10. The material pressing plate 31 can tightly press the packaging film 30 on the upper side of the material 20 onto the material 20; the material pressing plate adjusting device 313 includes a material pressing plate adjusting motor 3131 and a material pressing plate adjusting transmission assembly 3132 which are in transmission connection. The material pressing plate adjusting motor 3131 is communicatively connected to the control device. The material pressing plate 31 is arranged on the material pressing plate adjusting transmission assembly 3132. The material pressing plate adjusting motor 3131 can drive the material pressing plate adjusting transmission assembly 3132 to drive the material pressing plate 31 to move in the vertical direction to adjust the height of the material pressing channel 311; the pusher device 16 can push the material 20 wrapped with the packaging film 30 into the material pressing channel 311, and the rear film sealing mechanism 3 can perform rear film sealing on the material 20.

[0096] In this material pressing device, when it is necessary to adjust the height of the material pressing channel 311 for packaging materials 20 of different heights, the technician only needs to input the relevant parameters into the control device. The control device will start the material pressing plate adjusting motor 3131. The material pressing plate adjusting motor 3131 drives the material pressing plate adjusting transmission assembly 3132 to move. The material pressing plate adjusting rotating assembly drives the material pressing plate 31 to move in the vertical direction, and thus the height of the material pressing channel 311 can be adjusted. During the process of adjusting the height of the material pressing channel 311 by this material pressing device, the number of debugging times is less, the operation is simple, the time consumption is less, the efficiency is higher, which is beneficial to improving the packaging efficiency.

[0097] In some specific embodiments, the material pressing plate adjusting transmission assembly 3132 includes a material pressing plate adjusting lead screw 31321 and a material pressing plate adjusting nut 31322. The material pressing plate adjusting lead screw 31321 is rotatably connected to the packaging table 10 and extends in the vertical direction. The material pressing plate adjusting motor 3131 is in transmission connection with the material pressing plate adjusting lead screw 31321. The material pressing plate adjusting nut 31322 is helically connected to the material pressing plate adjusting lead screw 31321. The material pressing plate 31 is fixedly connected to the material pressing plate adjusting nut 31322. The material pressing plate adjusting motor 3131 can drive the material pressing plate adjusting lead screw 31321 to rotate to drive the material pressing plate adjusting nut 31322 and the material pressing plate 31 to move in the vertical direction.

[0098] In some other embodiments, the blank holder adjusting transmission assembly 3132 can adopt motion modules such as "gear-rack" motion module, "synchronous pulley-synchronous belt" motion module, etc., as long as it can drive the blank holder 31 to move in the vertical direction.

[0099] In some specific embodiments, the blank holder adjusting transmission assembly 3132 includes two blank holder adjusting lead screws 31321. The two blank holder adjusting lead screws 31321 are arranged along the width direction of the packaging table 10. The two ends of the blank holder 31 are fixedly connected to the blank holder adjusting nuts 31322 on the two blank holder adjusting lead screws 31321. The blank holder 31 adjusting assembly further includes a blank holder adjusting transmission rod 31323. The blank holder adjusting transmission rod 31323 extends along the width direction of the packaging table 10 and is coaxially and fixedly connected to the output shaft of the blank holder adjusting motor 3131. Two first blank holder adjusting helical gears 313231 are coaxially and fixedly arranged on the blank holder adjusting transmission rod 31323. A second blank holder adjusting helical gear 313211 is arranged on the blank holder adjusting lead screw 31321. The two first blank holder adjusting helical gears 313231 are meshed with the two second blank holder adjusting helical gears 313211 in a one-to-one correspondence, so that when the blank holder adjusting motor 3131 drives the blank holder adjusting transmission rod 31323 to rotate, the two blank holder adjusting lead screws 31321 can rotate synchronously to drive the two ends of the blank holder 31 to move synchronously and in the same direction in the vertical direction. By driving the two blank holder adjusting lead screws 31321 to rotate simultaneously through the blank holder adjusting transmission rod 31323, the levelness of the blank holder 31 during the up and down movement can be maintained to prevent tilting.

[0100] Specifically, the two first blank holder adjusting helical gears 313231 are oppositely arranged, so that the two blank holder adjusting lead screws 31321 can rotate synchronously and in opposite directions. The threads on the two blank holder adjusting lead screws 31321 are arranged in opposite directions, so that the blank holder adjusting nuts 31322 on the two blank holder adjusting lead screws 31321 can move synchronously and in the same direction in the vertical direction, so that the two ends of the blank holder 31 can move synchronously and in the same direction in the vertical direction and can maintain horizontal during the movement in the vertical direction.

[0101] In some other embodiments, the blank holder adjusting transmission assembly 3132 can adopt motion modules such as "gear-rack" motion module, "synchronous pulley-synchronous belt" motion module, etc. to drive the two blank holder adjusting lead screws 31321 to rotate synchronously, as long as it can make the two ends of the blank holder 31 move synchronously and in the same direction in the vertical direction.

[0102] In some specific embodiments, the blank holding device further includes a blank holding plate mounting plate 312. The blank holding plate mounting plate 312 is disposed on the blank holding plate adjusting transmission assembly 3132. The blank holding plate 31 is disposed on the lower side of the blank holding plate mounting plate 312. The blank holding plate 31 can move up and down relative to the blank holding plate mounting plate 312. A blank holding spring 3122 is provided between the blank holding plate 31 and the blank holding plate mounting plate 312. The blank holding spring 3122 extends in the vertical direction. The blank holding plate 31 and the blank holding plate mounting plate 312 compress the blank holding spring 3122. The setting of the blank holding spring 3122 enables the blank holding plate 31 to have a buffering effect on the material 20 during blank holding, reducing the possibility of damaging the material 20.

[0103] Specifically, a plurality of blank holding plate mounting holes are provided on the blank holding plate mounting plate 312. The blank holding plate mounting holes are clearance holes. Bolts are provided in the blank holding plate mounting holes. The heads of the bolts are located on the upper side of the blank holding plate mounting plate 312. The screw parts of the bolts are inserted into the blank holding plate mounting holes. The lower ends of the bolts are fixed to the blank holding plate 31. The blank holding spring 3122 is sleeved on the screw parts of the bolts and is located between the blank holding plate 31 and the blank holding plate mounting plate 312. Under the limiting action of the bolt heads, the blank holding plate 31 and the blank holding plate mounting plate 312 always compress the blank holding spring 3122, so that the blank holding spring 3122 is always in a compressed state but not compressed to the limit state.

[0104] During blank holding, under the action of the blank holding spring 3122, the downward pressing of the blank holding plate 31 on the material 20 has a buffering effect. When pressing a slightly higher material 20, the material 20 can push the blank holding plate 31 slightly upward, further compressing the blank holding spring 3122, so that the blank holding plate 31 will not damage the material 20. After the material 20 passes through the blank holding channel 311, under the action of the blank holding spring 3122 and the bolt heads, the blank holding plate 31 rebounds to its original position.

[0105] In some specific embodiments, the blank holding device further includes two blank holding plate guide plates 314. The two blank holding plate guide plates 314 are disposed at both ends of the blank holding plate mounting plate 312. The blank holding plate guide plates 314 are provided with blank holding plate guide grooves 3141 extending in the vertical direction. Guide blocks 3121 are provided at both ends of the blank holding plate mounting plate 312. The two guide blocks 3121 are respectively embedded in the two blank holding plate guide grooves 3141 and can slide in the blank holding plate guide grooves 3141. The guide blocks 3121 and the blank holding plate guide grooves 3141 are used to provide a guiding effect for the movement of the blank holding plate mounting plate 312 in the vertical direction, so that it can move stably in the vertical direction.

[0106] Specifically, one end of the blank holding plate adjusting transmission rod 31323 is coaxially and fixedly connected to the output shaft of the blank holding plate adjusting motor 3131 disposed on the blank holding plate guide plate 314 through a coupling, and the other end is rotatably connected to the other blank holding plate guide plate 314 through a bearing.

[0107] Two pressure plate adjusting lead screws 31321 are respectively rotatably connected to two pressure plate guide plates 314 through bearings. Two rod passing holes are provided on the pressure plate mounting plate 312. The two rod passing holes are respectively close to both ends of the pressure plate mounting plate 312 and are symmetric about the midline of the pressure plate mounting plate 312. The two pressure plate adjusting lead screws 31321 are respectively passed through the two rod passing holes to provide a certain guiding effect for the up and down movement of the pressure plate mounting plate 312.

[0108] In some specific embodiments, the rear film sealing mechanism 3 further includes a film lifting device 32 and a rear film sealing device. The film lifting device 32 includes a film lifting plate 322 and a film lifting driving device 321 which are drivingly connected. The film lifting driving device 321 can be used to drive the film lifting plate 322 to move in the vertical direction. A film lifting plate avoidance groove 3221 through which the film lifting plate 322 can pass when lifting the film is provided on the packaging table 10; the rear film sealing device includes a film sealing driving device 331, a film sealing plate 332 which are drivingly connected, and a heating device for heating the film sealing plate 332. The film sealing driving device 331 can be used to drive the film sealing plate 332 to move in the vertical direction to heat-seal the packaging film 30 on the material 20; the film lifting plate avoidance groove 3221 and the pressure feeding channel 311 are arranged in sequence along the packaging direction of the film covering packaging machine. The film sealing plate 332 is located above the film lifting plate 322. Both the film lifting driving device 321 and the film sealing driving device 331 are in communication connection with the control device, so that: when the material 20 drives the packaging film 30 to enter the pressure feeding channel 311 through the film lifting plate avoidance groove 3221, the film lifting plate 322 moves upward and lifts the lower packaging film 302; when heat-sealing, after the film sealing plate 332 moves downward and presses down the upper packaging film 301, the film lifting plate 322 moves downward, and the film sealing plate 332 squeezes the upper packaging film 301 and the lower packaging film 302 on the rear side wall 201 of the material 20 and performs heat-sealing.

[0109] In some specific embodiments, the rear film sealing device includes a film sealing plate mounting plate 3322. The film sealing plate mounting plate 3322 is drivingly connected to the film sealing driving device 331. The film sealing plate 332 is rotatably connected to the film sealing plate mounting plate 3322. The rotation axis of the film sealing plate 332 extends along the width direction of the packaging table 10. A swing plate transmission member 337 is provided on the upper side of the film sealing plate 332. The swing plate transmission member 337 includes a transmission portion 3372 extending along the length direction of the packaging table 10. The transmission portion 3372 extends toward the side close to the pressure plate 31; a swing plate stopper 3335 is provided on the upper side of the pressure plate 31. The swing plate stopper 3335 is located directly below the transmission portion 3372. When the film sealing plate 332 moves downward, the swing plate stopper 3335 blocks the transmission portion 3372, so that the lower side of the film sealing plate 332 swings toward the material 20 in the pressure feeding channel 311 to squeeze the upper packaging film 301 and the lower packaging film 302 on the rear side wall 201 of the material 20 and perform heat-sealing.

[0110] In some specific embodiments, a swing plate stopper adjusting device 333 is provided on the upper side of the pressure plate 31. The swing plate stopper adjusting device 333 includes a swing plate stopper adjusting motor 3332, a swing plate stopper motor fixing seat 3331, a swing plate stopper adjusting lead screw 3333, and a swing plate stopper adjusting nut 3334. The swing plate stopper motor fixing seat 3331 is provided on the upper side of the pressure plate 31. The swing plate stopper adjusting motor 3332 is provided on the upper side of the swing plate stopper motor fixing seat 3331. The swing plate stopper adjusting lead screw 3333 is provided in the swing plate stopper motor fixing seat 3331 and extends in the vertical direction. The swing plate stopper adjusting nut 3334 is threadedly connected to the swing plate stopper adjusting lead screw 3333. A guide rail extending in the vertical direction is provided on the inner wall of the swing plate stopper motor fixing seat 3331. The swing plate stopper adjusting nut 3334 is slidably connected to the guide rail. The swing plate stopper 3335 is fixedly connected to the swing plate stopper adjusting nut 3334.

[0111] Specifically, the film sealing driving device 331 is provided outside one of the pressure plate guide plates 314. Two film sealing plate driving synchronous pulleys 334 are provided inside the pressure plate guide plate 314. The two film sealing plate driving synchronous pulleys 334 are arranged in the vertical direction. The axis of the film sealing plate driving synchronous pulley 334 extends in the width direction of the packaging table 10. A film sealing plate driving synchronous belt 335 is wound around the two film sealing plate driving synchronous pulleys 334. The film sealing driving device 331 is a film sealing driving motor, and its output shaft is coaxially and fixedly connected to one of the film sealing plate driving synchronous pulleys 334.

[0112] A film sealing plate mounting plate 3322 is provided on the film sealing plate driving synchronous belt 335. Film sealing plate guide rails 336 are provided on both of the pressure plate guide plates 314. The film sealing plate guide rails 336 extend in the vertical direction. The two ends of the film sealing plate mounting plate 3322 are respectively fixedly connected to the sliders of the two film sealing plate guide rails 336. Among them, one end of the film sealing plate mounting plate 3322 is also fixed to the film sealing plate driving synchronous belt 335, so that the film sealing driving motor can drive the film sealing plate driving synchronous belt 335 to drive the film sealing plate mounting plate 3322 to move in the vertical direction.

[0113] A heating device is provided on the film sealing plate mounting plate 3322. The heating device includes a heating plate 3321. The heating plate 3321 is rotatably connected to the film sealing plate mounting plate 3322 through a bearing, and its rotation axis extends in the width direction of the packaging table 10. A heating tube is provided inside the heating plate 3321. A film sealing plate 332 is provided on the heating plate 3321. Both the heating plate 3321 and the film sealing plate 332 are metal heat-conducting plates. After the heating tube heats the heating plate 3321, the film sealing plate 332 will also be heated.

[0114] A swing plate transmission member 337 is fixed to the upper side of the heating plate 3321. This L-shaped swing plate transmission member 337 includes a fixed portion 3371 that is fixedly connected to the heating plate 3321 and extends vertically, and a transmission portion 3372 that extends along the length of the packaging table 10. The fixed portion 3371 has a vertically extending elongated hole through which a bolt is passed. The swing plate transmission member 337 is secured to the film-sealing plate mounting plate 3322 via the bolts. This allows for a certain amount of swinging space between the heating plate 3321 and the film-sealing plate 332, with the axis of rotation extending along the width of the packaging table 10.

[0115] A top plate spring is sleeved over the bolts and positioned between the heating plate 3321 and the film-sealing plate mounting plate 3322. The heating plate 3321 and the film-sealing plate mounting plate 3322 squeeze the top plate spring, keeping it compressed. The top plate spring maintains the film-sealing plate 332 in an upright position until the swing plate transmission member 337 contacts the swing plate stop 3335.

[0116] The swing plate stopper 3335 is a bearing stopper rotatably connected to the swing plate stopper adjustment nut 3334, with its rotation axis extending along the width of the packaging table 10. The bearing stopper can rotate while blocking the transmission portion 3372, reducing hard contact with the transmission portion 3372 and reducing damage to the swing plate transmission member 337.

[0117] The film sealing plate 332 is located above the top film plate 322 . In horizontal projection, both the top film plate 322 and the film sealing plate 332 are located at the rear side of the pressing channel 311 , and the top film plate 322 is closer to the pressing channel 311 than the film sealing plate 332 .

[0118] In the rear film sealing mechanism 3, reference Figures 21 to 24 , the working process is as follows:

[0119] The front side wall of the material 20 pushes against the packaging film 30, passes through the top film plate avoidance groove 3221, and then enters the pressing channel 311. When entering the pressing channel 311, the pressing plate 31 will flatten the film on the upper side of the material 20 (i.e., the upper packaging film 301), while the film on the lower side of the material 20 (i.e., the lower packaging film 302) will be attached to the lower side of the material 20 under the action of the pressing plate 31 and the packaging table 10. The material 20 will stop just after passing through the top film plate avoidance groove 3221 and wait for film sealing.

[0120] The top film driving device 321 drives the top film plate 322 to move upward, lifting the lower packaging film 302 located behind the material 20. When the top film plate 322 moves upward, it almost adheres to the rear sidewall 201 of the material 20. Subsequently, the film sealing driving device 331 drives the film sealing plate 332 to move downward. During the downward movement of the film sealing plate 332, the transmission part 3372 of the swing plate transmission part 337 touches the swing plate stopper 3335, causing the lower side of the film sealing plate 332 to swing towards the rear sidewall 201 of the material 20. During the swinging of the film sealing plate 332, the upper packaging film 301 located behind the material 20 is pressed down. Moreover, when the film sealing plate 332 approaches the top film plate 322, the top film driving device 321 drives the top film plate 322 to move downward rapidly. When the lower packaging film 302 lifted by the top film plate 322 remains in place due to inertia, the front sidewall of the film sealing plate 332 presses the upper packaging film 301 and the lower packaging film 302 together against the rear sidewall 201 of the material 20, and heat sealing is performed under the action of high temperature to complete the film sealing of the rear sidewall 201 of the material 20.

[0121] The swing plate stopper motor fixing seat 3331 is provided on the upper side of the pressure plate mounting plate 312. According to the different heights of the material 20 to be packaged, the swing plate stopper motor can drive the swing plate stopper adjusting screw 3333 to rotate, thereby adjusting the height of the swing plate stopper 3335. In the prior art, the swinging of the film sealing plate 332 is driven by a cylinder, and the installation is relatively troublesome and time-consuming to adjust. The device for swinging the film sealing plate 332 in this embodiment is more convenient in terms of installation and adjustment, shortening the installation and adjustment time and improving production efficiency.

[0122] In some specific embodiments, the top film driving device 321 includes a servo electric cylinder, and the film sealing driving device 331, the swing plate stopper adjusting motor 3332, and the pressure plate adjusting motor 3131 are stepping motors or servo motors. The top film driving device 321, the film sealing driving device 331, and the swing plate stopper adjusting motor 3332 are all communicatively connected to the control device.

[0123] In some specific embodiments, refer to Figures 25 to 29, the side film-hooking mechanism 4 includes a film-hooking device, and the film-hooking device includes a film-hooking driving device 41, a film-hooking transmission assembly 411, and two film-hooking rods 42. The film-hooking driving device 41 is arranged on the packaging table 10 and is communicatively connected to the control device. The two film-hooking rods 42 are arranged at intervals in the horizontal direction perpendicular to the conveying direction of the material 20. The film-hooking transmission assembly 411 includes a film-hooking synchronous transmission member 4111 and two first film-hooking transmission members 4112. The two film-hooking rods 42 are respectively in transmission connection with the two first film-hooking transmission members 4112. The two first film-hooking transmission members 4112 are both in transmission connection with the film-hooking synchronous transmission member 4111. The film-hooking synchronous transmission member 4111 is in transmission connection with the film-hooking driving device 41. The film-hooking driving device 41 can drive the two film-hooking rods 42 to move synchronously in the same direction along the conveying direction of the material 20 through the film-hooking synchronous transmission member 4111 and the two first film-hooking transmission members 4112.

[0124] Under the action of the film-hooking synchronous transmission member 4111, the two first film-hooking transmission members 4112 can drive the corresponding film-hooking rods 42 to move synchronously in the same direction along the length direction of the packaging table 10, so that during the film-hooking process, there is no time difference in the actions of the two film-hooking rods 42, which is beneficial to shortening the overall time duration of the film-hooking process and improving the packaging efficiency.

[0125] In addition, only one film-hooking driving device 41 is required for the film-hooking device in this embodiment, which is beneficial to reducing the production cost.

[0126] The material 20 that has been rear-sealed by the rear film-sealing mechanism 3 enters the side film-sealing mechanism 4 one by one under the push of the subsequent material 20 for side film-sealing.

[0127] In some specific embodiments, the first film-hooking transmission member 4112 is a film-hooking transmission gear. The film-hooking transmission gear is rotatably connected to the packaging table 10 and its rotation axis extends in the vertical direction. The film-hooking transmission assembly 411 further includes two film-hooking transmission racks 4113. The two film-hooking rods 42 are respectively fixedly connected to the two film-hooking transmission racks 4113. The film-hooking transmission racks 4113 extend along the length direction of the packaging table 10. The two film-hooking transmission gears are meshed and connected with the two film-hooking transmission racks 4113 in a one-to-one correspondence.

[0128] In some other embodiments, the first film-hooking transmission member 4112 can adopt a synchronous belt, which cooperates with a synchronous pulley to drive the film-hooking rod 42 to move in the length direction of the packaging table 10; or a lead screw can be adopted, which cooperates with a nut screwed on the lead screw to drive the film-hooking rod 42 to move in the length direction of the packaging table 10.

[0129] In some specific embodiments, a first hook film transmission helical gear 41121 is coaxially and fixedly connected to the hook film transmission gear; the hook film synchronous transmission member 4111 is rod-shaped and extends along the width direction of the packaging table 10. The hook film driving device 41 is a hook film driving motor. One end of the hook film synchronous transmission member 4111 is in transmission connection with the hook film driving motor, and the other end is rotatably connected to the packaging table 10. Two second hook film transmission helical gears 41111 are coaxially and fixedly connected to the hook film synchronous transmission member 4111. The two second hook film transmission helical gears 41111 are meshed and connected to the two first hook film transmission helical gears 41121 respectively. The hook film driving motor can drive the hook film synchronous transmission member 4111 to rotate, so that the two hook film transmission gears rotate synchronously to drive the two hook film rods 42 to move synchronously in the same direction along the length direction of the packaging table 10.

[0130] Specifically, the hook film driving motor is a servo motor or a stepper motor.

[0131] In some other embodiments, a rack can be used as the hook film synchronous transmission member 4111, and then combined with a gear, which can also drive the two hook film transmission gears to rotate synchronously.

[0132] In some specific embodiments, two hook film transmission mounting plates 413 are provided on the lower side of the packaging table 10. The two hook film transmission mounting plates 413 are arranged along the width direction of the packaging table 10. The hook film driving motor is arranged inside one of the hook film transmission mounting plates 413. A first hook film transmission wheel 4121 is coaxially and fixedly connected to the output shaft of the hook film driving motor. The first hook film transmission wheel 4121 is located outside the hook film transmission mounting plate 413. The hook film synchronous transmission member 4111 is rotatably connected to the two hook film transmission mounting plates 413. One end of the hook film synchronous transmission member 4111 close to the hook film transmission mounting plate 413 where the hook film driving motor is located is coaxially and fixedly connected to a second hook film transmission wheel 4122. The second hook film transmission wheel 4122 is located outside the hook film transmission mounting plate 413. A hook film transmission belt 4123 is wound around the first hook film transmission wheel 4121 and the second hook film transmission wheel 4122. The hook film driving motor drives the hook film synchronous transmission member 4111 to rotate through the first hook film transmission wheel 4121, the second hook film transmission wheel 4122 and the hook film transmission belt 4123.

[0133] The hook film driving motor is arranged inside one of the hook film transmission mounting plates 413, and the hook film driving motor is accommodated between the lower side of the packaging table 10 and the two hook film transmission mounting plates 413, which is beneficial to improving the space utilization rate and making the overall structure of the hook film device more compact.

[0134] In some specific embodiments, a hook film driving guide rail 414 is fixedly connected to the hook film driving rack 4113. The hook film rod 42 is fixedly connected to the hook film driving guide rail 414. A hook film driving slider 415 is fixedly arranged on the packaging table 10. The hook film driving slider 415 is clamped on the hook film driving guide rail 414 and can slide relative to the hook film driving guide rail 414.

[0135] Specifically, both the hook film driving rack 4113 and the hook film driving guide rail 414 are fixedly connected to a mounting block, so that the hook film driving rack 4113 is fixedly connected to the hook film driving guide rail 414. When the hook film driving motor operates, the hook film driving gear rotates, driving the hook film driving rack 4113 to move along the length direction of the packaging table 10. At the same time, the hook film driving rack 4113 also moves along the length direction of the packaging table 10. The hook film driving slider 415 provides guidance for the movement of the hook film driving guide rail 414 and the hook film driving rack 4113 in the length direction of the packaging table 10, so that the hook film rod 42 remains stable during the movement.

[0136] In some specific embodiments, the side film sealing mechanism 4 includes two adjusting plates 43 arranged side by side at intervals and an adjusting plate adjusting device 432 for adjusting the distance between the two adjusting plates 43. The adjusting plates 43 extend along the length direction of the packaging table 10, and the two adjusting plates 43 extend along the width direction of the packaging table 10. A film folding assembly 431 for folding the packaging film 30 on the material 20 to adhere to the side wall of the material 20 is provided on the adjusting plate 43. The adjusting plate adjusting device 432 includes an adjusting plate adjusting motor 4321 connected by transmission and two adjusting plate adjusting lead screws 4322 fixedly connected coaxially. The threads on the two adjusting plate adjusting lead screws 4322 are arranged in opposite directions. The adjusting plate adjusting lead screws 4322 extend along the width direction of the packaging table 10. The two adjusting plates 43 are respectively connected to the two adjusting plate adjusting lead screws 4322 through two adjusting plate adjusting nuts 4323 in one-to-one correspondence, so that the adjusting plate adjusting motor 4321 can drive the two adjusting plate adjusting lead screws 4322 to drive the two film folding assemblies 431 to approach or move away from each other.

[0137] During the packaging process of the material 20, the distance between the two film folding assemblies 431 matches the width of the material 20. Therefore, when it is necessary to package materials 20 of different specifications and widths, it is necessary to adjust the distance between the two film folding assemblies 431. The two film folding assemblies 431 are respectively arranged on the two adjusting plates 43, and the distance between the two film folding assemblies 431 is adjusted through the adjusting plate adjusting device 432.

[0138] Through two adjusting plate adjusting lead screws 4322 fixedly connected coaxially but with opposite threads, the adjusting plate adjusting motor 4321 can simultaneously drive the two adjusting plates 43 to move in opposite directions along the width direction of the packaging table 10 to adjust the distance between the two film folding assemblies 431.

[0139] In this embodiment, the adjustment plate adjustment device 432 includes two sets of adjustment plate adjustment screws 4322 that are coaxially fixed but have opposite threads. The two sets of adjustment plate adjustment screws 4322 are arranged along the length direction of the packaging table 10, and the adjustment plate adjustment motor 4321 drives the two sets of adjustment plate adjustment screws 4322 to rotate simultaneously through a synchronous belt and a synchronous wheel.

[0140] Before the material 20 enters the side film sealing process, the rear sidewall 201 of the material 20 has already been sealed. The film folding assembly 431 includes a film folding baffle 4311. As the material 20 advances, the film folding baffle 4311 presses the film on both sides of the front of the material 20 backward, pressing this portion of the packaging film 30 against the two sidewalls of the material 20. This process is called front film folding. When the material 20 enters between the two film folding baffles 4311, the film hooking drive 41 drives the film hooking rod 42 to hook the packaging film 30 on the rear side of the material 20 forward. The film hooking rod 42 includes a film hooking portion 421. During the film hooking process, the film hooking portion 421 hooks the packaging film 30 forward and opens the film folding baffle 4311, bringing the packaging film 30 into the space between the sidewalls of the material 20 and the film folding baffle 4311. This process is called back film folding. After the forward and backward folding processes, two lines of packaging film 30 are formed on the sidewalls of the material 20, protruding from the material 20. These two lines of packaging film 30 are located on the upper and lower sides of the material 20, respectively. As the material 20 continues to be conveyed forward, the other components of the film folding assembly 431, excluding the film folding baffle 4311, successively bend the upper and lower lines of packaging film 30 to conform to the sidewalls of the material 20. These are referred to as the upper and lower folding films, respectively.

[0141] In some specific embodiments, the two hook film transmission gears are respectively arranged on the two adjustment plates 43, and the hook film synchronous transmission part 4111 is provided with two hook film bevel gear sleeves 41112. The two hook film bevel gear sleeves 41112 are circumferentially fixed to the hook film synchronous transmission part 4111 and are respectively fixedly connected to the two adjustment plates 43. The two second hook film transmission bevel gears 41111 are respectively coaxially connected to the two hook film bevel gear sleeves 41112.

[0142] Specifically, the cross-section of the hook-film synchronous transmission part 4111 is polygonal, and the inner wall shape of the hook-film bevel gear sleeve 41112 matches the cross-section of the hook-film synchronous transmission part 4111, so that the hook-film bevel gear sleeve 41112 can be circumferentially fixed to the hook-film synchronous transmission part 4111 after being sleeved on the hook-film synchronous transmission part 4111.

[0143] The hook film driving gear is rotatably connected to the adjusting plate 43, and the second hook film driving bevel gear 41111 is relatively fixed to the adjusting plate 43 through the hook film bevel gear sliding sleeve 41112, that is, the corresponding first hook film driving bevel gear 41121 and the second hook film driving bevel gear 41111 are arranged on the same adjusting plate 43. Even if the adjusting plate 43 moves along the width direction of the packaging table 10, the first hook film driving bevel gear 41121 can still maintain meshing connection with the corresponding second hook film driving bevel gear 41111.

[0144] In some specific embodiments, the side film sealing mechanism 4 includes a side film sealing device. The side film sealing device includes a side film sealing conveying device and two side film sealing ironing plates 442. The side film sealing ironing plates 442 are fixedly connected to the packaging table 10 and extend along the length direction of the packaging table 10. The two side film sealing ironing plates 442 are arranged at intervals along the width direction of the packaging table 10. The side film sealing conveying device includes a side film sealing conveying motor 4412 and two side film sealing conveying components 4411. The two side film sealing conveying components 4411 are arranged in one-to-one correspondence with the two side film sealing ironing plates 442. The side film sealing conveying component 4411 includes a side film sealing driving conveying wheel 44111 and a side film sealing driven conveying wheel 44112. The side film sealing driving conveying wheel 44111 and the side film sealing driven conveying wheel 44112 are arranged along the length direction of the packaging table 10 and are respectively located at both ends of the side film sealing ironing plate 442. The rotation axes of the side film sealing driving conveying wheel 44111 and the side film sealing driven conveying wheel 44112 both extend in the vertical direction. A side film sealing conveyor belt 44113 is wound around the side film sealing driving conveying wheel 44111 and the side film sealing driven conveying wheel 44112. The side film sealing ironing plate 442 is located inside the side film sealing conveyor belt 44113. The part of the side film sealing conveyor belt 44113 for conveying the material 20 is called the side film sealing conveying section. The side film sealing ironing plate 442 is closely attached to the side film sealing conveying section. Both of the two side film sealing driving conveying wheels 44111 are drivingly connected to the side film sealing conveying motor 4412.

[0145] After the folding film assembly 431 and the hook material device perform front folding, rear folding, upper folding and lower folding on the material 20, the material 20 is conveyed between the conveying sections of the two side film sealing conveyor belts 44113. During the conveying process, the side film sealing ironing plate 442 heat-seals the packaging film 30 pressed on the side wall of the material 20. After the material 20 leaves between the conveying sections of the two side film sealing conveyor belts 44113, the side film sealing of the material 20 is completed.

[0146] In some specific embodiments, the side film sealing device further includes a side film sealing conveying synchronizing rod 443. The side film sealing conveying synchronizing rod 443 extends along the width direction of the packaging table 10 and is in transmission connection with a side film sealing conveying motor 4412. The side film sealing conveying motor 4412 can drive the side film sealing conveying synchronizing rod 443 to rotate. A first side film sealing conveying bevel gear 441111 is coaxially and fixedly connected to the side film sealing driving conveying wheel 44111. Two second side film sealing conveying bevel gears 4431 are coaxially and fixedly connected to the side film sealing conveying synchronizing rod 443. The two second side film sealing conveying bevel gears 4431 are in meshing connection with the two first side film sealing conveying bevel gears 441111 in a one-to-one correspondence, so that the side film sealing conveying motor 4412 can drive the side film sealing conveying sections of the two side film sealing conveyor belts 44113 to move synchronously and in the same direction. Through the film sealing conveying synchronizing rod, the two side film sealing driving conveying wheels 44111 can rotate synchronously and in opposite directions, that is, the conveying sections of the two side film sealing conveyor belts 44113 can move synchronously and in the same direction, which is beneficial to improving the conveying stability of the material 20 during side film sealing. At the same time, one side film sealing conveying motor 4412 can be saved, reducing the packaging cost.

[0147] Specifically, the two side film sealing driving conveying wheels 44111 are respectively rotatably connected to two adjusting plates 43. Two side film sealing bevel gear sliding sleeves are sleeved on the side film sealing conveying synchronizing rod 443. Both of the two side film sealing bevel gear sliding sleeves are circumferentially fixed to the side film sealing conveying synchronizing rod 443 and are respectively fixedly connected to the two adjusting plates 43. The two second side film sealing conveying bevel gears 4431 are respectively coaxially and rotatably connected to the two side film sealing bevel gear sliding sleeves.

[0148] The cross section of the side film sealing conveying synchronizing rod 443 is polygonal. The shape of the inner side wall of the side film sealing bevel gear sliding sleeve matches the cross section of the side film sealing conveying synchronizing rod 443, so that the side film sealing bevel gear sliding sleeve can be circumferentially fixed to the side film sealing conveying synchronizing rod 443 after being sleeved on the side film sealing conveying synchronizing rod 443. Therefore, even if the adjusting plate 43 moves along the width direction of the packaging table 10, the first side film sealing conveying bevel gear 441111 can still maintain meshing connection with the corresponding second side film sealing conveying bevel gear 4431.

[0149] In some specific embodiments, refer to Figure 30, the control device includes a PLC controller and a human-machine interaction device. The human-machine interaction device includes a touch control screen, and a human-machine interaction interface is provided inside the touch control screen. The pusher driving device, the negative pressure generating device 212, the feeding driving device 111, the feeding baffle adjusting motor 131, the pressing plate adjusting motor 3131, the top film driving device 321, the film sealing driving device 331, the swing plate stopper adjusting motor 3332, the hook film driving device 41, the adjusting plate adjusting motor 4321, and the side film sealing conveying motor 4412 are all communicatively connected to the PLC controller. The touch control screen is communicatively connected to the PLC controller. After the technician inputs parameters and conveys instructions to the PLC controller through the human-machine interaction interface, the PLC controller controls the operation of the corresponding motor according to the instructions, thereby realizing the corresponding functions.

[0150] In addition, the control device further includes a data storage module. The data storage module can be used to record the parameters of each acting component during the packaging process, and the data storage module is communicatively connected to the PLC controller. For example, if a certain specification of the packaging box has been film-coated and packaged before, and after the technician inputs parameters and performs corresponding action adjustments to the width of the feeding channel 121 on the human-machine interaction interface, the technician can store the parameters in the data storage module. When packaging the same specification of the packaging box next time, the technician can retrieve the relevant parameters stored last time, drive the baffle adjusting motor and move the baffle to adjust the width of the feeding channel 121, and can achieve "one-key adjustment" of the width of the feeding channel 121, which is convenient to operate, has low operation requirements, and does not require a dedicated operator.

[0151] Of course, when it is necessary to adjust the position, action speed, working frequency, etc. of other devices, the above method can also be used to store the relevant parameters in the data storage module to achieve "one-key adjustment" of the relevant devices and complete the relevant actions.

[0152] The embodiment of the present invention also provides a film-coating packaging method, including: accelerating the falling of the packaging film 30 by negative pressure adsorption during the process of conveying the packaging film 30 downward.

[0153] In this embodiment, the film-coating packaging method includes the following steps:

[0154] S1. Pass the packaging film 30 through the film feeding device 5 and the film lowering device 2 successively;

[0155] S2. Place the material 20 in the feeding mechanism 1, and the feeding mechanism 1 enables the material 20 to pass through the film lowering through hole 22 to the rear film sealing mechanism 3, and enables the packaging film 30 to be wrapped on the material 20;

[0156] S3. The rear film sealing mechanism 3 heat-seals the packaging film 30 on the rear side of the material 20;

[0157] S4. The side film sealing mechanism 4 heat-seals the packaging film 30 on both sides of the material 20.

[0158] Among them, step S1 includes the following steps:

[0159] S11. Pass the packaging film 30 through the film feeding device 5;

[0160] S12. Pass the packaging film 30 between two lower film rods 23, and make the packaging film 30 fall by blowing through the blowing tube 231 of the film blowing tube;

[0161] S13. Pass the packaging film 30 through the lower film through hole 22, and accelerate the falling of the packaging film 30 by the negative pressure adsorption of the negative pressure film suction device 21.

[0162] Through the negative pressure adsorption of the negative pressure film suction device 21, the falling speed of the packaging film 30 is greatly increased, which is beneficial to improving the film covering and packaging efficiency of the film covering packaging machine.

[0163] Step S2 includes the following steps:

[0164] S21. Place the material 20 in the feeding channel 121, and the feeding conveyor belt 112 conveys the material 20 to the pushing table 151;

[0165] S22. The ejector driving device 152 pushes the pushing table 151 upward until the height of the material 20 on the pushing table 151 corresponds to that of the ejector rod 161;

[0166] S23. The pushing driving device drives the ejector rod 161 to push the material 20 on the pushing table 151, so that the material 20 passes through the lower film through hole 22 and reaches the rear side film sealing mechanism 3 and is covered with the packaging film 30.

[0167] Step S3 includes the following steps:

[0168] S31. The material 20 enters the pressing channel 311, and under the combined action of the pressing plate 31 and the packaging table 10, the upper packaging film 301 and the lower packaging film 302 wrapped on the material 20 are pressed flat;

[0169] S32. The top film driving device 321 drives the top film plate 322 to move upward to lift the lower packaging film 302 at the rear side of the material 20;

[0170] S33. The sealing plate 332 driving device drives the sealing plate 332 to move downward and presses the upper packaging film 301 at the rear side of the material 20;

[0171] S34. The swing plate stopper 3335 touches the swing plate transmission member 337, so that the sealing plate 332 swings towards the rear side wall 201 of the material 20. The top film driving device 321 drives the top film plate 322 to move downward, and the sealing plate 332 presses the upper packaging film 301 and the lower packaging film 302 on the rear side wall 201 of the material 20 and heat-seals them.

[0172] Step S4 includes the following steps:

[0173] S41. The material 20 enters between the two folding film components 431, and the packaging film 30 coated on the material 20 is completed before the folding film, after the folding film, the folding film and the lower folding film;

[0174] S42. The material 20 enters between the conveying sections of the two side sealing conveyor belts 44113 and is heated by the two side sealing ironing plates 442 to complete the sealing of the two side walls of the material 20.

[0175] Wherein, step S41 includes:

[0176] After the packaging film 30 wrapped around the material 20 is folded forward and just enters between the two folding assemblies 431, the film hooking driving device 41 drives the two film hooking rods 42 to move toward the film folding assemblies 431. The film hooking parts 421 of the film hooking rods 42 hook the packaging film 30 on the rear side of the material 20 forward and stretch open the film folding baffle 4311, bringing the packaging film 30 between the side wall of the material 20 and the film folding baffle 4311, and making the packaging film 30 close to the side wall of the material 20.

[0177] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A film laminating packaging machine, characterized in that: It includes a packaging table (10), a lower film device (2) and a material pushing device (16); A lower film through hole (22) through which the packaging film (30) can pass from top to bottom is provided on the packaging table (10); The lower film device (2) includes a negative pressure film sucking device (21). The negative pressure film sucking device (21) includes a negative pressure film sucker (211) and a negative pressure generating device (212) for generating negative pressure. The negative pressure film sucker (211) has a film sucking inner cavity (2116) and a film sucking port (2114) communicated with the film sucking inner cavity (2116). The negative pressure generating device (212) is communicated with the film sucking inner cavity (2116). The film sucking port (2114) is located below the lower film through hole (22), so that the negative pressure film sucker (211) can adsorb the packaging film (30) passing through the lower film through hole (22) to drive the packaging film (30) to be conveyed downward; The material pushing device (16) includes a material pushing rod (161) and a material pushing driving device. The material pushing driving device includes a material pushing driving rotating motor (163) and a first material pushing transmission member. The first material pushing transmission member is a material pushing transmission synchronous belt (165), a material pushing transmission lead screw (164) or a material pushing transmission rack (166). The material pushing rod (161) is arranged on the first material pushing transmission member. The first material pushing transmission member is in transmission connection with the material pushing driving rotating motor (163). The material pushing driving rotating motor (163) is arranged on the packaging table (10); Or, the material pushing driving device includes a material pushing driving linear motor (162). The material pushing driving linear motor (162) is arranged on the packaging table (10). The material pushing driving linear motor (162) includes a material pushing motor slide rail (1621) and a material pushing motor slider (1622) slidably connected to the material pushing motor slide rail (1621). The material pushing motor slide rail (1621) extends along the conveying direction of the material (20). The material pushing rod (161) is arranged on the material pushing motor slider (1622).

2. The film laminating packaging machine according to claim 1, wherein: The negative pressure film sucker (211) includes a first film sucking plate (2111) and a second film sucking plate (2112). A plurality of film sucking plate cushion strips (2113) connected end to end in sequence are arranged between the first film sucking plate (2111) and the second film sucking plate (2112). The first film sucking plate (2111), the second film sucking plate (2112) and the plurality of film sucking plate cushion strips (2113) enclose to form the film sucking inner cavity (2116) and the film sucking port (2114) facing the upper side.

3. The film laminating packaging machine according to claim 1, wherein: The film sucking port (2114) is arranged directly below the lower film through hole (22), and the projection of the lower film through hole (22) on the horizontal plane is located within the projection of the film sucking port (2114) on the horizontal plane.

4. The film laminating packaging machine according to any one of claims 1 to 3, characterized in that: The lower film device (2) further includes two lower film rods (23). The two lower film rods (23) are located above the lower film through hole (22). The lower film rods (23) extend in a horizontal direction perpendicular to the conveying direction of the material (20). The two lower film rods (23) are arranged at intervals along the conveying direction of the material (20) so that the packaging film (30) can pass through between the two lower film rods (23). A plurality of film blowing tubes (231) are provided on the lower sides of the two lower film rods (23). The film blowing tubes (231) are communicated with a blowing device. An air outlet (2311) is provided at the lower end of the film blowing tube (231). The air outlet (2311) is obliquely downwardly oriented towards the packaging film (30), so that the blowing device can blow the packaging film (30) obliquely downwardly through the air outlet (2311) of the film blowing tube (231) to drive the packaging film (30) to be conveyed downward.

5. The film covering packaging machine according to claim 1, wherein: The material pushing drive device includes a material pushing drive linear motor (162), and the material pushing drive linear motor (162) is a magnetic levitation linear motor.

6. The film-covered packaging machine according to claim 1, wherein: The film laminating and packaging machine further includes a feeding mechanism (1), a rear side film sealing mechanism (3), and a side film sealing mechanism (4). The feeding mechanism (1) includes the material pushing device (16). The feeding mechanism (1), the lower film device (2), the rear side film sealing mechanism (3), and the side film sealing mechanism (4) are arranged in sequence along the conveying direction of the material (20). The film laminating and packaging machine further includes a control device. The feeding mechanism (1), the lower film device (2), the rear side film sealing mechanism (3), and the side film sealing mechanism (4) are all communicatively connected to the control device. The material pushing drive device is communicatively connected to the control device.

7. The film laminating packaging machine according to claim 6, characterized in that: The feeding mechanism (1) includes a feeding frame (11), a feeding baffle assembly, and a feeding baffle adjusting device (13). The feeding frame (11) is arranged on the packaging table (10). A feeding drive device (111) and a feeding conveyor belt (112) which are in transmission connection are provided on the feeding frame (11). The feeding baffle assembly includes two feeding baffles (12). The two feeding baffles (12) extend along the length direction of the feeding conveyor belt (112). The two feeding baffles (12) are arranged side by side and at intervals above the conveying surface of the feeding conveyor belt (112) to form a feeding channel (121) between the two feeding baffles (12). The feeding baffle adjusting device (13) includes a feeding baffle adjusting motor (131) and a feeding baffle adjusting transmission assembly (132) which are in transmission connection. The feeding baffle adjusting motor (131) is communicatively connected to the control device. The two feeding baffles (12) are both arranged on the feeding baffle adjusting transmission assembly (132). The feeding baffle adjusting motor (131) can drive the feeding baffle adjusting transmission assembly (132) to drive the two feeding baffles (12) to approach or move away from each other along the width direction of the feeding conveyor belt (112) so as to adjust the width of the feeding channel (121). A pusher table (151) is provided between the feeding conveyor belt (112) and the lower film through hole (22). The pusher table (151) can be used to receive the material (20) falling from the feeding conveyor belt (112). The pushing device (16) can push the material (20) on the pusher table (151) through the lower film through hole (22) and push it into the rear side film sealing mechanism (3).

8. The film laminating packaging machine according to claim 6, wherein: The rear side film sealing mechanism (3) includes a material pressing device, and the material pressing device includes a material pressing plate (31) and a material pressing plate adjusting device (313); The material pressing plate (31) is arranged above the packaging table (10) to form a material pressing channel (311) between the material pressing plate (31) and the packaging table (10) for the material (20) and the packaging film (30) to pass through. The material pressing plate (31) can tightly press the packaging film (30) on the upper side of the material (20) onto the material (20); The material pressing plate adjusting device (313) includes a material pressing plate adjusting motor (3131) and a material pressing plate adjusting transmission assembly (3132) that are drivingly connected. The material pressing plate adjusting motor (3131) is communicatively connected to the control device. The material pressing plate (31) is arranged on the material pressing plate adjusting transmission assembly (3132). The material pressing plate adjusting motor (3131) can drive the material pressing plate adjusting transmission assembly (3132) to drive the material pressing plate (31) to move in the vertical direction to adjust the height of the material pressing channel (311); The pushing device (16) can push the material (20) wrapped with the packaging film (30) into the material pressing channel (311), and the rear side film sealing mechanism (3) can perform rear side film sealing on the material (20).

9. The film-covered packaging machine according to claim 6, wherein: The side film sealing mechanism (4) includes a film hooking device. The film hooking device includes a film hooking driving device (41), a film hooking transmission assembly (411), and two film hooking rods (42). The film hooking driving device (41) is arranged on the packaging table (10) and is communicatively connected to the control device. The two film hooking rods (42) are arranged at intervals in the horizontal direction perpendicular to the conveying direction of the material (20); The film hooking transmission assembly (411) includes a film hooking synchronous transmission member (4111) and two first film hooking transmission members (4112). The two film hooking rods (42) are respectively drivingly connected to the two first film hooking transmission members (4112). The two first film hooking transmission members (4112) are both drivingly connected to the film hooking synchronous transmission member (4111). The film hooking synchronous transmission member (4111) is drivingly connected to the film hooking driving device (41). The film hooking driving device (41) can drive the two film hooking rods (42) to move in the same direction and synchronously along the conveying direction of the material (20) through the film hooking synchronous transmission member (4111) and the two first film hooking transmission members (4112).

10. A film laminating packaging method, characterized in that: During the transportation of the lower film of the packaging film (30), the falling of the packaging film (30) is accelerated by negative pressure adsorption.

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