Packaging production line for aviation cases
By designing an automated flight case packaging production line, using motor- and cylinder-driven clamps and slide block assemblies to achieve automatic wrapping and stacking of flight cases, the problems of low efficiency and labor-intensive manual operation in existing technologies are solved, and a highly efficient and safe wrapping process is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN DIERTAI TECH CO LTD
- Filing Date
- 2026-03-14
- Publication Date
- 2026-05-12
AI Technical Summary
Existing technologies for laminating aircraft bags are inefficient, require manual labor, and pose safety hazards.
A flight case packaging production line was designed, including a flight case conveying mechanism, a side film covering mechanism, and a top film covering mechanism. The automatic film covering is achieved by using motors and cylinders to drive components such as clamps, slides, and sliders. Combined with a lifting frame and chain drive system, the automatic stacking and film covering of flight cases is realized.
It improves coating efficiency, reduces labor consumption, ensures operational safety and production continuity, and has a simple and practical structure that saves human resources.
Smart Images
Figure CN122009633A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of equipment packaging technology, and in particular relates to an aviation case packaging production line. Background Technology
[0002] Before being transported onto an aircraft, flight containers used for air transport are generally covered with a base layer of plastic film to prevent dust and scratches. Sometimes, two flight containers need to be stacked on top of each other before being covered with the base layer of plastic film. These tasks are mostly carried out manually, which has the following drawbacks: First, manual film covering is inefficient; second, flight containers containing cargo are quite heavy, and manual lifting and stacking are physically demanding and can easily lead to injuries. Summary of the Invention
[0003] The purpose of this invention is to provide a flight case packaging production line that is highly efficient, time-saving, and labor-saving.
[0004] The objective of this invention is achieved as follows: A flight case packing production line includes a first frame, characterized in that: the first frame is provided with a flight case conveying mechanism, a side film covering mechanism, and a top film covering mechanism; the top film covering mechanism has first slide rails respectively provided on opposite side crossbeams at the top of the first frame; first vertical rods with vertical second slide rails are respectively slidably mounted on the first slide rails, driven by a motor to move laterally along the two first slide rails; the two ends of the first horizontal rods are slidably mounted on the two second slide rails and are driven to rise and fall by a motor; the first horizontal rods are provided with two or more first clamps driven by cylinders to clamp the film; a sheet-like film hanging frame is provided on the lower side of the first horizontal rods; the side film covering mechanism has a second horizontal rod hinged to the top of the first frame, driven by a motor to rotate. The first frame has a first vertical rod with a third vertical track extending downwards from one end of a second horizontal rod. A first vertical shaft with a film tube can be mounted upwards from the outer end of a cantilevered arm that is driven by a motor to move up and down on the third track. The first vertical shaft has one or more second vertical shafts on the first slider on one side of the first vertical shaft. The flight case conveying mechanism is located at the bottom of the first frame. The outer side of the flight case conveying mechanism is equipped with a second clamp driven by a cylinder to clamp the film pulled out from the film tube, and a contact strip driven by a motor to rotate and abut against the outer surface of the flight case. A blade driven by a motor to move up and down to cut the film is provided between the contact strip and the second clamp. The controller controls the operation of all the motors and cylinders according to a set program.
[0005] As a further optimization of the above technical solution, a first sleeve that can rotate around the first vertical shaft is fitted on the first vertical shaft, and a first bearing is provided between the first vertical shaft and the first sleeve. A second sleeve that can rotate around the second vertical shaft is fitted on the second vertical shaft, and a second bearing is provided between the second vertical shaft and the second sleeve. A friction plate that controls the tension of the thin film by spring pressure is abutted on the outer wall of the second sleeve.
[0006] As a further optimization of the above technical solution, at least two second vertical axes are provided at intervals on the first slider.
[0007] As a further optimization of the above technical solution, a second frame is provided on one side of the first frame, spanning the flight case conveying mechanism. A horizontal shaft driven by a motor is provided on the top of the second frame. Chains are respectively hung on sprockets fixedly connected to both ends of the horizontal shaft. Lifting frames driven by the chains are slidably mounted on the vertical guide rails provided on the side frames of the second frame on both sides of the flight case conveying mechanism. Each lifting frame is provided with an insert plate that extends towards the lifting frame on the opposite side and can be inserted into the bottom of the flight case to lift the flight case. The height of the top of the second frame is higher than the height of the two flight cases stacked on top of each other, so that the flight cases lifted by the insert plates can be stacked on the flight cases on the flight case conveying mechanism below it.
[0008] As a further optimization of the above technical solution, two lifting frames on the rear side of the insert plate are respectively hinged with rocker arms driven by cylinders. The ends of the rocker arms are provided with mounting seats that are driven by cylinders to extend and retract. The mounting seats are provided with slots that can be rotated 180 degrees by motors to adjust the direction of the bottom rollers of the flight case. The slots include slots formed by side plates on both sides of a base plate. One end of each side plate is provided with a bending part that can smoothly engage the outward bending part of the rollers.
[0009] As a further optimization of the above technical solution, a third frame is provided on the outside of the second frame away from the first frame, which spans the flight case conveying mechanism. A motor-driven lifting platform is provided on the outside of the third frame away from the first frame, so that the upper surface of the lifting platform can be connected with the upper surface of the flight case conveying mechanism. A ramp is provided on the outside of the lifting platform to push the flight case onto the lifting platform.
[0010] As a further optimization of the above technical solution, the flight case conveying mechanisms on the lower sides of the first and second frames are respectively height-adjustable through threaded transmission mechanisms. The third frame is equipped with a lifting mechanism for the flight case conveying mechanism. The lifting mechanism for the flight case conveying mechanism has slide rails on the vertical rods of the third frame on both sides of the flight case conveying mechanism. The sliders on the base of the flight case conveying mechanism slide on the slide rails. Cylinders are respectively installed at the bottom of both sides of the third frame. Chains are respectively attached to the sprockets at both ends of the piston rods that extend upward out of the cylinders and are fixed to the sliders. One end of the chain is fixed to the slider and the other end is fixed to the third frame. The lifting and lowering of the cylinders drives the lifting and lowering of the flight case conveying mechanism.
[0011] As a further optimization of the above technical solution, magnetic induction sensors or photoelectric sensors are respectively installed on the inner side of the flight case conveying mechanism of the first frame, the second frame, and the third frame. The flight case arrival signal sensed by the magnetic induction sensor or the photoelectric sensor is transmitted to the controller, which controls the next action.
[0012] As a further optimization of the above technical solution, the flight case conveying mechanism is provided with chain drive mechanisms driven by motors and rotating synchronously in two parallel tracks with through grooves. Each chain of the chain drive mechanism is provided with positioning push blocks that push the rollers of the flight case to move at intervals.
[0013] As a further optimization of the above technical solution, each link of the chain is hinged with a U-shaped support block with its bottom facing out and covering the link via a pin on each link, and a positioning push block for moving the rollers of the flight case is fixed on every U-shaped support block at intervals of one.
[0014] The advantages of this invention compared to the prior art are: 1. In this invention, a rotating and lifting side film covering mechanism is used within the first frame to release the top film covering mechanism. The hanging part of the sheet-like film on the top of the flight case is wrapped around the side wall of the flight case, thus completing the top and side film covering of the flight case. The number of film layers can be adjusted as needed. Since the side film covering mechanism is driven by power to rotate, even with multiple layers of film covering, the high speed of the power-driven rotation results in a short film covering time and high efficiency.
[0015] 2. In this invention, insert plates are installed on the lifting frames on both sides driven by a motor within the second frame to form a double forklift-type lifting structure. This structure has a large load-bearing capacity and can lift various types of flight cases. The lifted flight cases can be stacked on the flight case conveying mechanism below, enabling the stacking of two layers of flight cases. Since each flight case has grooves on the top four corners that can engage with the rollers on the bottom four corners of the flight case, the stability of the stacked flight cases is good. After the two layers of flight cases are covered together, they are easy to load and transport by forklift or transport mechanism.
[0016] 3. In this invention, each link of the chain in the flight case conveying mechanism is hinged with a U-shaped support block with its bottom facing outward and covering the link via a pin. The rollers at the bottom of the flight case are directly positioned on the U-shaped support blocks by two adjacent positioning push blocks. The U-shaped support blocks, in conjunction with the pins, have good load-bearing capacity, are not easily deformed, and do not affect the normal transmission of the chain. The two adjacent positioning push blocks serve both a positioning function and the function of moving the flight case. The structure is simple, the force transmission is direct, the resistance is low, and the energy-saving effect is good.
[0017] 4. This invention features liftable flight case conveying mechanisms mounted on the bases of the first to third frames, facilitating rapid installation and adjustment of the equipment. This is particularly useful during the packaging process, allowing for height adjustments of the flight cases at different stages to facilitate track alignment between adjacent frames. The flight cases are then transported sequentially to the first frame for lamination. For instance, the height difference between the ramp and the lifting platform cannot be too large, otherwise manual pushing becomes difficult. Furthermore, the lamination process requires covering the sides of the flight cases on the first frame. Since the side laminator needs a support and rotating mechanism for the film cylinder, it must be at a certain height from the ground. Therefore, the track of the liftable flight case conveying mechanism is essential for the production line operation. This invention utilizes a simple, practical, and highly effective lifting mechanism with threaded height adjustment and power drive for the flight case conveying system, adapting to different heights.
[0018] 5. The present invention has a simple and practical structure, saves time and effort, has high production efficiency, and saves human resources. Attached Figure Description
[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention.
[0020] Figure 2 yes Figure 1 Enlarged view of part A.
[0021] Figure 3 This is a three-dimensional schematic diagram of the third frame of the present invention.
[0022] Figure 4 This is a three-dimensional schematic diagram of the second frame of the present invention.
[0023] Figure 5 yes Figure 4 Enlarged view of part B.
[0024] Figure 6 This is one of the three-dimensional schematic diagrams of the first frame of the present invention.
[0025] Figure 7 This is a second three-dimensional schematic diagram of the first frame of the present invention.
[0026] Figure 8 yes Figure 6 Enlarged view of part C.
[0027] Figure 9 yes Figure 7 Enlarged view of part D. Detailed Implementation
[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figures 1-9 : A flight case 1 packing production line includes a first frame 40. The first frame 40 houses a flight case conveying mechanism 2, a side film covering mechanism, and a top film covering mechanism. The top film covering mechanism consists of two opposing crossbeams 46 on the top of the first frame 40. First vertical rods 43, each with a vertical second slide rail 42, are slidably mounted on the first slide rails 46 and driven by a motor to move laterally along the two first slide rails 46. The first vertical rods 43 are slidably mounted on the second slide rails 42 via sliders 45. The two ends of a first crossbar 56 are slidably mounted on the two second slide rails 42 and are driven to rise and fall by a motor. A crossbar 56 is equipped with two or more cylinders 54 that suspend film, driving two or more first clamps to hold the film. Each first clamp includes a U-shaped body 55 with its opening facing downwards. One vertical sidewall of the U-shaped body is a fixed film clamping arm 52, and the piston rod of a cylinder fixed on the other vertical sidewall extends into the inner sidewall and is fixed with a movable film clamping arm 53. A sheet film suspension frame 41 is provided on the lower side of the first crossbar 56 for the first clamps to hold the sheet film. The side-coating mechanism consists of a second crossbar 49, which is hinged to the top 48 of the first frame 40 and driven to rotate by a motor 47. One end of the crossbar 49 is provided with a downward-extending second vertical bar 50 with a vertical third slide rail 51. A motor-driven first slider 62, which slides on the third slide rail 51, has a cantilever 63 extending outward from its bottom side, with an upward-extending first vertical shaft 60 for mounting a film tube. One or more second vertical shafts 62 are provided on one side of the first slider 62. The flight case conveying mechanism 2 is located at the bottom of the first frame. A second clamp 64, driven by a cylinder, is provided on the outer support 67 of the flight case conveying mechanism 2 to clamp the film pulled out from the film tube. The first frame... The bottom of the side rod 44 of 40 is hinged to a rocker arm 68 driven by a motor. The vertical rod 58 at the outer end of the rocker arm 68 is provided with an abutment strip 57 that abuts the film against the outer surface of the flight case 1. A blade 59 driven by a motor to lift and cut the film is provided between the abutment strip 57 and the second clamp 64. The second clamp 64 includes a first clamping arm 65 and a second clamping arm 66, the lower ends of which are respectively hinged to the bracket 67. The first clamping arm 65 or the second clamping arm 66 is driven by a motor or a cylinder to rotate and clamp the film pulled out from the film tube. The controller controls the operation of all the motors and cylinders according to a set program.
[0029] As a further optimization of the above technical solution, a first sleeve that can rotate around the first vertical shaft 61 is fitted on the first vertical shaft 61, and a first bearing is provided between the first vertical shaft 61 and the first sleeve. A second sleeve that can rotate around the second vertical shaft 61 is fitted on the second vertical shaft 61, and a second bearing is provided between the second vertical shaft and the second sleeve. A friction plate that controls the tension of the thin film by spring pressure is abutted on the outer wall of the second sleeve.
[0030] As a further optimization of the above technical solution, at least two second vertical shafts 61 are provided at intervals on the first slider 62 to guide the film pulled out from the film tube.
[0031] As a further optimization of the above technical solution, a second frame 20 is provided on one side of the first frame 40, spanning the flight case conveying mechanism 2. A horizontal shaft 22 driven by a motor 23 is provided on the top of the second frame 20. Chains 21 are respectively hung on sprockets fixedly connected to both ends of the horizontal shaft 22. A lifting frame 25 driven by the chain 21 is slidably mounted on the vertical guide rail 24 provided on the side frame of the second frame 20 on both sides of the flight case conveying mechanism 2. Each lifting frame 25 is provided with an insert plate 26 that extends towards the opposite lifting frame 25 and can be inserted into the bottom of the flight case 1 to lift the flight case 1. The height of the top of the second frame 20 is higher than the height of the two flight cases 1 stacked on top of each other, so that the flight cases 1 lifted by the insert plate 26 can be stacked on the flight cases 1 on the flight case conveying mechanism 2 below it.
[0032] As a further optimization of the above technical solution, two lifting frames 25 on the rear side of the insert plate 26 are respectively hinged with rocker arms 30 driven by cylinders. The ends of the rocker arms 30 are provided with mounting seats driven by cylinders 31 for extension and retraction. The mounting seats are provided with slots 29 driven by motors to rotate 180 degrees to adjust the direction of the bottom rollers of the flight case 1. The slots 26 include slots 29 formed by side plates 28 on both sides of a base plate. One end of each side plate 28 is provided with an outwardly bent portion 27 that allows the slots 29 to be smoothly engaged with the bottom rollers of the flight case 1.
[0033] As a further optimization of the above technical solution, a third frame 10 is provided on the outer side of the second frame 20 away from the first frame 40, which spans the flight case conveying mechanism 2. A lifting platform 18 driven by a motor or cylinder is provided on the outer side of the third frame 10 away from the first frame 40, so that the upper surface of the lifting platform 18 can be aligned with the upper surface of the flight case conveying mechanism 2 to directly push the rollers at the bottom of the flight case 1 onto the flight case conveying mechanism 2. A ramp 19 is provided on the outer side of the lifting platform 18 to push the flight case 1 onto the flight case conveying mechanism 2.
[0034] As a further optimization of the above technical solution, the flight case transport mechanism 2 on the lower side of the first frame 40 and the second frame 20 are respectively height-adjustable through a threaded transmission mechanism. The third frame 10 is provided with a lifting mechanism for the flight case transport mechanism. The lifting mechanism for the flight case transport mechanism 2 is provided with slide rails 16 on the vertical rods 14 of the third frame 10 on both sides of the flight case transport mechanism 2. The slider 17 on the base of the flight case transport mechanism 2 slides on the slide rails 16. The bottom of both sides of the third frame 10 is provided with cylinders 15. The ends of the piston rods extending upward from the cylinders 15 are fixed to the sprockets at both ends, and chains 13 are respectively hung on the sprockets. One end of the chain 13 is fixed to the slider 17 and the other end is fixed to the third frame 10. The lifting and lowering of the cylinders 15 drives the lifting and lowering of the flight case transport mechanism 2.
[0035] As a further optimization of the above technical solution, magnetic induction sensors or photoelectric sensors are respectively installed inside the flight case conveying mechanism 2 of the first frame 40, the second frame 20, and the third frame 10. The flight case 1 arrival signal sensed by the magnetic induction sensor or the photoelectric sensor is transmitted to the controller, which controls the next action.
[0036] As a further optimization of the above technical solution, the flight case conveying mechanism 2 is provided with chain drive mechanisms that are driven by motors and rotate synchronously in two parallel tracks 37 with through grooves 36. Each chain 32 of the chain drive mechanism is provided with positioning push blocks 33 at intervals to push the rollers of the flight case 1 to move.
[0037] As a further optimization of the above technical solution, each link of the chain 32 is hinged with a U-shaped support block 34 covering the link via a pin 35 on each link, and a positioning push block 33 is fixed on each U-shaped support block 34 at intervals of one U-shaped support block 34 to move the roller of the flight case 1.
[0038] The controller controls the clamps on the crossbar to clamp the upper end of the film and move it upward and laterally to release it to the top of the flight case, while the periphery of the film falls down. The controller controls the lifting and lowering of the first vertical axis to wrap the film around the side of the flight case and cover the periphery of the film falling down at the top of the flight case.
[0039] The working process of this invention: Manually push the flight case 1 up the ramp 19 onto the lifting platform 18, press the start button, and under the control of the controller, the lifting platform 18 is driven by power to rise to the same height as the flight case conveying mechanism 2 on the third frame 10. After manually pushing the flight case 1 onto the flight case conveying mechanism 2 on the third frame 10, the lifting platform 18 descends and resets. After the flight case conveying mechanism 2 on the third frame 10 detects that the flight case 1 has moved into place, it stops and automatically rises to a position where it can dock with the flight case conveying mechanism 2 on the second frame 20. The third frame 10 and the flight case conveying mechanism 2 on the second frame 20 act simultaneously, transporting the flight case 1 on the third frame 10 to the second frame 20. Then, the flight case conveying mechanism 2 on the third frame 10 descends and resets. (3) After the flight case conveying mechanism 2 on the second frame 20 detects that the flight case 1 has moved into place, it stops. The power drives the insert plate 26 of the lifting frame 25 on both sides to move horizontally inward until it extends into the bottom of the flight case 1. Then it rises and drives the flight case 1 to a height higher than the lower flight case 1. The slot 29 on the mounting seat extends out and rotates to the roller at the bottom rear of the flight case 1 to lock the roller. Then it rotates 180 degrees and rotates the mounting arm with the roller protruding backward to the forward position. After the lower flight case 1 moves to the bottom of the upper flight case 1, the upper flight case 1 descends and the four rollers at the bottom of the upper flight case 1 fall into the strip grooves at the four corners of the top of the upper flight case 1 and lock them in place to achieve radial positioning. Then, the insert plate 26 of the lifting frame 25 is pulled out horizontally outward and descends to reset. (4) After the two flight cases 1 are detected to be stacked in place, the flight case conveying mechanisms 2 on the first frame 40 and the second frame 20 move simultaneously, transporting the flight cases 1 on the flight case conveying mechanism 2 of the second frame 20 to the flight case conveying mechanism 2 of the first frame 40. After the flight cases 1 on the first frame 40 are detected to be in place, the flight case conveying mechanism 2 on the first frame 40 stops moving and begins the film coating operation: the side film coating mechanism drives the film cylinder to rotate and coat the flight cases 1 from bottom to top. After rotating to the top, the side film coating mechanism stops moving, and the top film coating mechanism starts from the bottom of the first crossbar 56. The sheet film is clamped on the sheet film suspension bracket 41, lifted and moved horizontally to the top side of the flight case 1, and the sheet film is released on the top of the flight case 1. The edges of the sheet film hang down to the sides of the flight case 1 by gravity. The side film covering mechanism drives the film cylinder to rotate and cover the flight case 1 from top to bottom. After rotating to the bottom of the flight case 1, it stops at the second clamp 64 to clamp the film. Then the abutment bar 57 rotates to the outer surface of the flight case 1 and abuts. The motor drives the blade 59 to rise and fall and cut the film, or the film is cut by the scissor-type scissors driven by the cylinder. The film covering is completed and all mechanisms are restored.
[0040] The flight case 1 is manually pushed up the ramp 19 to the lifting platform 18 in sequence, and the above actions are repeated to realize the continuous film covering work of the flight case 1 on the production line. If single-layer flight case 1 is packaged, the stacking action of the second frame lifting frame for flight case 1 can be eliminated.
[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that simple substitutions or modifications can still be made to the technical solutions or technical features described in the foregoing embodiments, and these simple substitutions or modifications do not cause the essence of the corresponding technical solutions to deviate from the spirit and substance of the technical solutions of the embodiments of the present invention, and are still within the protection scope of the present invention.
Claims
1. A flight case packing production line, comprising a first frame, characterized in that: The first frame is equipped with a flight case conveying mechanism, a side film covering mechanism, and a top film covering mechanism. The top film covering mechanism consists of first slide rails on opposite side crossbeams at the top of the first frame. Each first slide rail has a first vertical bar with a vertical second slide rail, driven by a motor to move laterally along the two first slide rails. The two ends of the first vertical bar slide on the two second slide rails and are driven to rise and fall by a motor. The first vertical bar has two or more cylinder-driven first clamps that hold the film in place. A sheet-like film suspension frame is located on the lower side of the first vertical bar. The side film covering mechanism consists of a second vertical bar hinged to the top of the first frame, driven by a motor to rotate. One end of the second vertical bar has a... A second vertical rod with a vertical third slide rail extends downwards. A first slider, driven by a motor and slidable on the third slide rail, has an outwardly extending cantilever at the bottom of which is provided with a first vertical shaft that extends upwards to accommodate a film tube. One or more second vertical shafts are provided on the first slider on one side of the first vertical shaft. The flight case conveying mechanism is located at the bottom of the first frame. A second clamp driven by a cylinder is provided on the outside of the flight case conveying mechanism to clamp the film pulled out from the film tube. An abutment bar driven by a motor rotates to abut against the outer surface of the flight case. A blade driven by a motor to lift and cut the film is provided between the abutment bar and the second clamp. The controller controls the operation of all the motors and cylinders according to a set program.
2. The flight case packaging production line according to claim 1, characterized in that: A first sleeve that can rotate around the first vertical shaft is fitted on the first vertical shaft, and a first bearing is provided between the first vertical shaft and the first sleeve. A second sleeve that can rotate around the second vertical shaft is fitted on the second vertical shaft, and a second bearing is provided between the second vertical shaft and the second sleeve. A friction plate that controls the tension of a thin film by spring pressure is abutted on the outer wall of the second sleeve.
3. The flight case packaging production line according to claim 1, characterized in that: The second vertical axis is provided in at least two spaced intervals on the first slider.
4. The flight case packaging production line according to claim 1, characterized in that: A second frame spanning the flight case conveying mechanism is provided on one side of the first frame. A horizontal shaft driven by a motor is provided on the top of the second frame. Chains are respectively hung on sprockets fixedly connected to both ends of the horizontal shaft. Lifting frames driven by the chains are slidably provided on the vertical guide rails provided on the side frames of the second frame on both sides of the flight case conveying mechanism. Each lifting frame is provided with a plate that extends towards the lifting frame on the opposite side and can be inserted into the bottom of the flight case to lift the flight case. The height of the top of the second frame is higher than the height of the two flight cases stacked on top of each other, so that the flight cases lifted by the plates can be stacked on the flight cases on the flight case conveying mechanism below.
5. The flight case packaging production line according to claim 4, characterized in that: Two lifting frames on the rear side of the insert plate are respectively hinged to rocker arms driven by cylinders. The ends of the rocker arms are provided with mounting seats that are driven by cylinders to extend and retract. The mounting seats are provided with slots that can be rotated 180 degrees by motors to adjust the direction of the bottom rollers of the flight case. The slots include slots formed by side plates on both sides of a base plate. One end of each side plate is provided with an outward bending part that can smoothly engage the rollers.
6. The flight case packaging production line according to claim 4, characterized in that: A third frame is provided on the outside of the second frame away from the first frame, which spans the flight case conveying mechanism. A motor-driven lifting platform is provided on the outside of the third frame away from the first frame, so that the upper surface of the lifting platform can be aligned with the upper surface of the flight case conveying mechanism. A ramp is provided on the outside of the lifting platform to push the flight case onto the lifting platform.
7. The flight case packaging production line according to claim 6, characterized in that: The flight case transport mechanisms on the lower sides of the first and second frames are height-adjustable via threaded transmission mechanisms. The third frame is equipped with a lifting mechanism for the flight case transport mechanism. The lifting mechanism consists of slide rails on the vertical rods of the third frame on both sides of the flight case transport mechanism. A slider on the base of the flight case transport mechanism slides on the slide rails. Cylinders are installed at the bottom of both sides of the third frame. Chains are attached to sprockets at the ends of the piston rods extending upward from the cylinders and fixed to the horizontal rods at both ends. One end of the chain is fixed to the slider and the other end is fixed to the third frame. The lifting and lowering of the cylinders drives the lifting and lowering of the flight case transport mechanism.
8. The flight case packaging production line according to claim 6, characterized in that: Magnetic induction sensors or photoelectric sensors are respectively installed on the inner side of the flight case conveying mechanism of the first frame, the second frame, and the third frame. The flight case arrival signal sensed by the magnetic induction sensor or photoelectric sensor is transmitted to the controller, which controls the next action.
9. A flight case packing production line according to any one of claims 1-8, characterized in that: The flight case conveying mechanism consists of two parallel tracks with through grooves, each equipped with a chain drive mechanism that rotates synchronously driven by a motor. Each chain of the chain drive mechanism is equipped with a positioning pusher that moves the rollers of the flight case.
10. The flight case packaging production line according to claim 9, characterized in that: Each link of the chain is hinged with a U-shaped support block with its bottom facing outward and covering the link via a pin on each link. A positioning push block is fixed on every other U-shaped support block to move the rollers of the flight case.