Stackable material rack for automobile sunroof transfer and assembly integration with dynamic limiting

Abstract

The utility model provides a stackable car sunroof transfer assembly integrated material rack with dynamic limiting, aiming at the poor transportation adaptability, insufficient assembly compatibility and potential safety hazards of the transfer device in the prior art, and proposes an innovative solution. The material rack adopts modular design of frame unit, stacking unit, storage unit and limiting unit. The limiting mechanism realizes a three-stage buffer system through cooperation of the fan-shaped limiting plate and the pressing rod. Combined with the double-directional guiding structure of the stacking unit, the stability and multi-layer stacking accuracy during long-distance transportation are significantly improved. The "J" shaped sliding hole design realizes quick switching between transportation and assembly modes. The combination of the annular rubber pad and the buffer rubber sleeve eliminates the risk of metal contact, significantly reducing the surface scratching rate. The overall technical solution achieves substantial improvement in transportation adaptability, assembly compatibility and operation safety.

Description

Technical Field

[0001] This utility model relates to the field of automated assembly of automobiles, and in particular to a stackable integrated material rack for the transfer and assembly of automotive sunroofs with dynamic limiting. Background Technology

[0002] A car sunroof is installed on the roof of a car and is mainly used for functions such as rapid ventilation, cooling, and defogging inside the car. It usually consists of one or more pieces of glass that can be slid open or closed, and needs to be equipped with corresponding guide rails to ensure that the sunroof can slide smoothly during the opening and closing process.

[0003] Car sunroofs assembled on the production line need to be temporarily stored or transported on a transfer rack. For example, the car sunroof transfer and inspection rack disclosed in Chinese Patent CN118894288A includes a frame with several mounting layers evenly distributed along the vertical direction; a positioning mechanism located at one end of the length direction of each mounting layer, engaging with the mounting holes of the car sunroof; the positioning mechanism is equipped with a conventional positioning seat or an adaptive positioning seat, the adaptive positioning seat being used to position and engage car sunroofs with different mounting hole opening methods; a mating mechanism located at the opposite end of the positioning mechanism, clamping the car sunroof frame; the mating mechanism is equipped with a sliding mating end seat, the mating end seat being used to adapt to the mating of car sunroof frames of different sizes; and a testing mechanism located at both ends of the frame along its length direction and along its width direction, with the water outlet pointing towards the drain pipes at the four corners of the car sunroof.

[0004] However, the aforementioned transfer devices for car sunroofs have some drawbacks in practical applications: First, the adaptability for long-distance transfer is insufficient. The existing transfer device adopts a single-layer fixed structure design. The rigid connection between its positioning mechanism and the cooperating mechanism results in insufficient stacking stability. In long-distance truck transportation scenarios, it can only achieve single-layer loading and lacks a dynamic shock absorption mechanism. During transportation, road bumps can easily cause secondary collisions between the sunroof and the positioning seat, resulting in the risk of micro-cracks at the glass edges.

[0005] Secondly, there are defects in the compatibility of automated assembly. The sliding end seat of the mating mechanism adopts a mechanical limit design, and its positional accuracy is limited by manual adjustment, which cannot meet the assembly positioning requirements of the robot arm. The hydraulic drive system of the adaptive positioning seat has a delayed response, which forces the production line cycle time to be reduced, becoming a bottleneck in automated assembly.

[0006] Third, there are potential safety concerns regarding human-computer interaction. The current operating procedure requires manual completion of three steps: positioning, engagement, and testing. The manual adjustment of the mounting bracket requires applying force, which can easily lead to operator fatigue. More seriously, the upper skylight lacks a fall protection design. When adjusting the skylight, the glass surface directly contacts the metal components, which can easily cause scratches or stress concentration. Utility Model Content

[0007] This invention proposes a stackable integrated material rack for transporting and assembling automotive sunroofs with dynamic limiting, which can effectively solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A stackable integrated material rack for transporting and assembling automotive sunroofs with dynamic limiting, comprising frame units, stacking units, storage units, and limiting units.

[0009] Specifically, the frame unit includes a base, protective vertical bars, and connecting horizontal bars. The base includes an iron plate and a steel pipe frame mechanism; the steel pipe frame mechanism includes a square frame structure, a "well"-shaped structure, and reinforcing short bars; the "well"-shaped structure is set inside the square frame structure; the two ends of the reinforcing short bars are respectively set on the square frame structure and the "well"-shaped structure; the iron plate is set on the steel pipe frame mechanism; the square frame structure, the "well"-shaped structure, and the reinforcing short bars all include square steel pipes; the square frame structure includes a first steel pipe; four first steel pipes are welded end to end to form a rectangular frame; the "well"-shaped structure includes a second steel pipe, a third steel pipe, and a fourth steel pipe; two second steel pipes are connected by a third steel pipe; the fourth steel pipe is symmetrically set on the second steel pipes; the second, third, and fourth steel pipes form a "well"-shaped frame. The protective vertical bars are equidistantly set on the base and are distributed in a rectangular shape, including a fifth steel pipe, and reinforcing diagonal bars and reinforcing plates are set between the fifth steel pipe and the base. The two ends of the connecting crossbar are set on the sides of different protective vertical bars, including the sixth steel pipe, on which a square label plate is set; the first container is set on the square label plate for inserting the label plate. The three sixth steel pipes are distributed in a "U" shape.

[0010] Specifically, the stacked unit includes a top mechanism and a bottom mechanism. The top mechanism includes an annular rubber pad and a limiting rubber tube; the limiting rubber tube is disposed inside the annular rubber pad; the annular rubber pad is inserted into the outer side of the upper end of the protective vertical rod; the limiting rubber tube is inserted into the inner side of the upper end of the protective vertical rod; an annular limiting strip is provided on the inner side of the limiting rubber tube. The bottom mechanism includes a support structure and a positioning structure; the support structure includes a support tube and a support plate; the support plate is in the shape of a "J"; the support tubes are equidistantly disposed on the base, located below the iron plate; the top surface of the support plate is connected to the lower end of the support tube, and one end of the support plate is disposed on the base to improve the stability and strength of the structure; the positioning structure includes a positioning tube and a positioning head; the positioning tubes are equidistantly disposed on the base, located below the iron plate and the protective vertical rod; the positioning head is disposed inside the positioning tube, and its lower end is in the shape of a four-sided pyramid, adapted to the top mechanism.

[0011] Specifically, the storage unit includes a load-bearing mechanism and a pallet mechanism. The load-bearing mechanism includes a seventh steel pipe arranged in a rectangular pattern, symmetrically positioned on the base, with its upper end connected to a connecting crossbar, and first pin holes evenly spaced on the side plate. The pallet mechanism includes a pin shaft, a "C"-shaped pallet, a counterweight, a rubber buffer block, and a rubber pad. The pin shaft is pinned to the first pin hole; the "C"-shaped pallet is fixed to the pin shaft and has a second pin hole; the counterweight is fixed to the "C"-shaped pallet; the rubber pad is bolted to the "C"-shaped pallet; the rubber buffer block is bolted to the "C"-shaped pallet and located on the side facing away from the rubber pad. The counterweight is smaller than the "C"-shaped pallet; the counterweight's mass is slightly greater than the sum of the masses of the rubber buffer block, rubber pad, and "C"-shaped pallet, to ensure that the "C"-shaped pallet is vertical on the horizontal plane when the material rack is not under load.

[0012] Specifically, the limiting unit includes a lower positioning mechanism, an upper fixing mechanism, and a limiting mechanism. The lower positioning mechanism includes four angle steels symmetrically arranged on the base in a rectangular distribution; the angle steels are L-shaped; each angle steel has a sliding hole; the sliding hole is J-shaped; the horizontal section of the sliding hole is located on one side plate of the angle steel; the inclined section of the sliding hole is located on the other side plate of the angle steel. The upper fixing mechanism includes a fixing plate, a movable handle, and a pressure rod; the fixing plate is mounted on the connecting crossbar and has a third pin hole; a positioning cylinder is installed inside the third pin hole; a fourth pin hole is installed on the bottom plate of the positioning cylinder; the movable handle is mounted inside the positioning cylinder via a return spring; the pressure rod is located at the lower end of the movable handle and is slidably connected to the fourth pin hole. The limiting mechanism includes a support structure, a second container, and a third container; the second container is mounted on a base; the third container is mounted on a fixed plate; the lower pin of the support structure is connected to the second container, and the upper pin is connected to the third container; the support structure includes a vertical rod, a limiting horizontal rod, a horizontal handle, a buffer sleeve, and a fan-shaped limiting plate; universal balls are provided at the upper and lower ends of the vertical rod; the limiting horizontal rod is equidistantly mounted on the vertical rod; the buffer sleeve is inserted into the limiting horizontal rod; the horizontal handle is mounted on the vertical rod and is perpendicular to the limiting horizontal rod; the fan-shaped limiting plate is mounted on the vertical rod and has a positioning through hole and a second open through slot; both the positioning through hole and the second open through slot are adapted to the pressure rod.

[0013] Furthermore, a limit control structure is added to the frame unit. The limit control structure includes a push rod motor and a stepper motor. The stepper motor is mounted on the movable end of the push rod motor, and the shaft of the stepper motor is connected to the vertical rod.

[0014] Advantages compared to existing technologies: In this utility model, the following functions are achieved through the overall arrangement of the frame unit, the stacked unit, the storage unit, and the limiting unit: Firstly, this invention enhances the adaptability of transportation in various scenarios. The fan-shaped limiting plate of the limiting mechanism, in conjunction with the pressure rod, forms a three-level buffer system (static positioning / dynamic damping / emergency braking), which can control the sunroof displacement within a safe threshold during long-distance transportation. The annular limiting strip of the stacking unit and the four-sided pyramid positioning head provide dual guidance, ensuring high positioning accuracy between layers and supporting safe stacking of multiple layers.

[0015] Secondly, this invention overcomes the compatibility limitations of automated assembly, allowing the limit control structure to be switched manually or mechanically as needed. The push rod motor and stepper motor of the limit control structure work together to achieve high-precision positioning of the robotic arm's gripping position. The counterweight balancing system of the pallet mechanism ensures that the upper pallet returns to a vertical position within a short time, avoiding interference from the robotic arm.

[0016] Thirdly, this utility model improves the intelligence of the operation process. The "J"-shaped sliding hole of the limiting mechanism, in conjunction with the pressure rod, enables rapid switching between transportation and assembly modes. The rubber buffer block absorbs the impact energy of large units; the annular rubber pad eliminates interlayer metal contact, significantly reducing the surface scratch rate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model from below; Figure 4 This is a front view structural diagram of the present invention; Figure 5 This is a side view of the structure of this utility model.

[0018] In the diagram: 101. Iron plate, 102. Steel pipe frame mechanism, 103. Protective vertical bar, 104. Connecting horizontal bar, 201. Top mechanism, 202. Support pipe, 203. Support plate, 204. Positioning pipe, 205. Positioning head, 301. Load-bearing mechanism, 302. "C" shaped support plate, 303. Counterweight, 304. Rubber buffer block, 305. Rubber pad, 401. Lower positioning mechanism, 402. Fixed plate, 403. Movable handle, 404. Limiting horizontal bar, 405. Horizontal handle, 406. Fan-shaped limiting plate. Detailed Implementation

[0019] Example 1, refer to Appendix Figure 1-5 A stackable integrated material rack for transporting and assembling automotive sunroofs with dynamic limiting, comprising a frame unit, stacking unit, storage unit, and limiting unit.

[0020] The frame unit includes a base, a protective vertical bar 103, and a connecting horizontal bar 104.

[0021] The base includes an iron plate 101 and a steel pipe frame mechanism 102.

[0022] The steel pipe frame mechanism 102 includes a square frame structure, a "well" shaped structure, and reinforcing short rods.

[0023] The "well" shaped structure is welded inside the square frame structure.

[0024] The two ends of the reinforcing short rod are welded to the square frame structure and the "well" shaped structure, respectively.

[0025] The iron plate 101 is welded to the steel pipe frame mechanism 102.

[0026] The square frame structure, the "well" shaped structure, and the reinforcing short rods are all made of square steel pipes.

[0027] The first steel pipe, the second steel pipe, the third steel pipe, the fourth steel pipe, the fifth steel pipe, the sixth steel pipe, the seventh steel pipe, and the first steel pipe are all square steel pipes.

[0028] The frame structure includes a first steel pipe. Four first steel pipes are welded end to end to form a rectangular frame.

[0029] The "well" shaped structure includes a second steel pipe, a third steel pipe, and a fourth steel pipe. The two second steel pipes are connected by the third steel pipe.

[0030] The fourth steel pipe is symmetrically welded to the second steel pipe; the second, third, and fourth steel pipes form a "well" shaped frame.

[0031] The protective vertical rods 103 are equidistantly arranged on the base and are distributed in a rectangular pattern.

[0032] The protective vertical rod 103 includes a fifth steel pipe; a reinforcing diagonal rod and a reinforcing plate are provided between the protective vertical rod 103 and the base.

[0033] The two ends of the connecting crossbar 104 are located on the sides of different protective vertical bars 103.

[0034] The connecting crossbar 104 includes a sixth steel pipe; a square label plate is set on the connecting crossbar 104; a first container is set on the square label plate, and the three sixth steel pipes are distributed in a "U" shape.

[0035] The first container has a first open slot on its side plate; the first container is a transparent rectangular container used to insert a label plate.

[0036] The stacked unit includes a top mechanism 201 and a bottom mechanism.

[0037] The top mechanism 201 includes an annular rubber pad and a limiting rubber tube.

[0038] The limiting rubber tube is disposed inside the annular rubber pad.

[0039] The annular rubber pad is inserted into the outer side of the upper end of the protective vertical rod 103. The thickness of the annular rubber pad is 15mm.

[0040] The limiting hose is inserted into the inner side of the upper end of the protective vertical rod 103. An annular limiting strip is provided on the inner side of the limiting hose.

[0041] The bottom mechanism includes a support structure and a positioning structure.

[0042] The support structure includes a support pipe 202 and a support plate 203.

[0043] The support plate 203 is in the shape of a "J".

[0044] The support tubes 202 are equidistantly arranged on the base and located below the iron plate 101.

[0045] The top surface of the support plate 203 is connected to the lower end of the support tube 202.

[0046] One end of the support plate 203 is disposed on the base to improve the stability and strength of the structure.

[0047] The positioning structure includes a positioning tube 204 and a positioning head 205.

[0048] The positioning tubes 204 are equidistantly arranged on the base, located below the iron plate 101 and the protective vertical rod 103.

[0049] The positioning head 205 is disposed inside the positioning tube 204; the lower end of the positioning head 205 is in the shape of a four-sided pyramid, which is adapted to the top mechanism 201.

[0050] The storage unit includes a load-bearing mechanism 301 and a pallet mechanism.

[0051] The load-bearing mechanism 301 includes a seventh steel pipe.

[0052] The seventh steel pipe has first pin holes equidistantly arranged on its side plate. The first pin holes are circular in shape.

[0053] The seventh steel pipe is symmetrically arranged on the base, and the upper end of the seventh steel pipe is connected to the connecting crossbar 104; the seventh steel pipe is distributed in a rectangular shape.

[0054] The pallet mechanism includes a pin, a "C"-shaped pallet 302, a counterweight 303, a rubber buffer block 304, and a rubber pad 305. The pin is pinned to the first pin hole.

[0055] The "C"-shaped support plate 302 is fixedly connected to the pin shaft.

[0056] The "C"-shaped support plate 302 is provided with a second pin hole. The second pin hole is used for the installation, fixing, addition, and removal of the counterweight 303.

[0057] The counterweight 303 is fixed to the "C"-shaped support plate 302. The size of the counterweight 303 is smaller than that of the "C"-shaped support plate 302.

[0058] The rubber pad 305 is bolted to the "C"-shaped support plate 302. The Shore hardness of the rubber pad 305 is 60+5.

[0059] The rubber buffer block 304 is bolted to the "C"-shaped support plate 302 and is located on the side facing away from the rubber pad block 305. (See attached image) Figure 1 As shown.

[0060] The counterweight 303 has a mass slightly greater than the sum of the masses of the rubber buffer block 304, the rubber pad block 305, and the "C"-shaped pallet 302, in order to ensure that the "C"-shaped pallet 302 is vertical on the horizontal surface when the material rack is not under load.

[0061] The limiting unit includes a lower positioning mechanism 401, an upper fixing mechanism, and a limiting mechanism.

[0062] The lower positioning mechanism 401 includes an angle steel. The angle steel is L-shaped.

[0063] The angle steels are symmetrically arranged on the base; and the four angle steels are distributed in a rectangular pattern.

[0064] The angle steel is provided with a sliding hole; the horizontal section of the sliding hole is located on one side plate of the angle steel; the inclined section of the sliding hole is located on the other side plate of the angle steel.

[0065] The upper fixing mechanism includes a fixing plate 402, a movable handle 403, and a pressure rod.

[0066] The fixing plate 402 is disposed on the connecting crossbar 104.

[0067] A third pin hole is provided on the fixing plate 402. The third pin hole is circular in shape.

[0068] A positioning cylinder is installed inside the third pin hole.

[0069] The bottom plate of the positioning cylinder is provided with a fourth pin hole. The fourth pin hole is circular in shape.

[0070] The movable handle 403 is positioned inside the positioning cylinder by a return spring.

[0071] The pressure rod is located at the lower end of the movable handle 403 and is slidably connected to the fourth pin hole.

[0072] The limiting mechanism includes a support structure, a second container, and a third container.

[0073] Both the second and third containers are cylindrical containers.

[0074] The second container is disposed on the base.

[0075] The third container is mounted on the fixed plate 402.

[0076] The lower end pin of the support structure is connected to the second container.

[0077] The upper pin of the support structure is connected to the third container.

[0078] The support structure includes a vertical rod, a limiting horizontal rod 404, a horizontal handle 405, a buffer sleeve, and a fan-shaped limiting plate 406.

[0079] The upper and lower ends of the vertical rod are equipped with omnidirectional balls.

[0080] The limiting crossbars 404 are equidistantly arranged on the vertical bar.

[0081] The buffer sleeve is inserted into the limiting crossbar 404.

[0082] The horizontal handle 405 is mounted on the vertical bar; and the horizontal handle 405 and the limiting horizontal bar 404 are perpendicular to each other.

[0083] The sector-shaped limiting plate 406 is mounted on the vertical rod.

[0084] The sector-shaped limiting plate 406 is provided with a positioning through hole and a second opening through groove.

[0085] The second open through groove is an arc-shaped open through groove.

[0086] The positioning through hole and the second opening through groove are both adapted to the pressure rod.

[0087] Working principle and usage: Firstly, material storage and stacking: Tilt the sunroof to one side of the rubber pad 305 and press it down to make the "C" shaped support plate 302 turn horizontal; then press the other side of the sunroof down onto the other side of the rubber pad 305.

[0088] This allows the sunroof to be placed horizontally on the rubber pad 305 of the "C"-shaped support plate 302. Repeat the above operation to complete the storage of the sunroof from bottom to top.

[0089] After storage is complete, pull up the movable handle 403 to disengage the pressure bar from the sector-shaped limiting plate 406. Adjust the position of the limiting crossbar 404 using the horizontal handle 405. Then, lower the movable handle 403 to allow the pressure bar to enter the positioning through hole of the sector-shaped limiting plate 406, restricting the position of the sunroof and making the material rack more stable and the sunroof less prone to damage during long-distance transportation.

[0090] The material racks are stacked in an orderly manner, and the positioning structure enters the top mechanism 201. The setting of the limiting rubber tube and the positioning head 205 makes the stacking position more precise. The setting of the support plate 203 makes the contact area at the stacking point larger, the placement more stable, and facilitates long-distance transportation of car sunroofs.

[0091] Secondly, automated uninstallation (installation): Place the material rack below the robotic arm; pull up the movable handle 403 to disengage the pressure bar from the sector-shaped limiting plate 406. Adjust the position of the limiting crossbar 404 using the horizontal handle 405. Then, lower the movable handle 403 to allow the pressure bar to enter the second opening slot of the sector-shaped limiting plate 406. Disengage the horizontal handle 405 from its position above the sunroof.

[0092] Each time the robotic arm grabs the sunroof of a car, it will move the "C"-shaped support plate 302 upward. Under the action of the counterweight 303, the "C"-shaped support plate 302 becomes vertical, making it easier for the robotic arm to grab the sunroof of the car below.

[0093] Example 2: Based on Example 1, a limit control structure is added to the frame unit. The limit control structure includes a push rod motor and a stepper motor. The stepper motor is set on the movable end of the push rod motor, and the rotating shaft of the stepper motor is connected to the vertical rod.

Claims

1. A stackable integrated material rack for transporting and assembling automotive sunroofs with dynamic limiting, characterized in that: It includes a frame unit, a stacked unit, a storage unit, and a limiting unit; the frame unit includes a base, a protective vertical bar (103), and a connecting horizontal bar (104); the stacked unit includes a top mechanism (201) and a bottom mechanism; the top mechanism (201) includes an annular rubber pad and a limiting rubber tube; the bottom mechanism includes a support structure and a positioning structure; the support structure includes a support tube (202) and a support plate (203); the positioning structure includes a positioning tube (204) and a positioning head (205); the storage unit includes a load-bearing mechanism (301) and a pallet mechanism; the pallet mechanism includes a pin shaft, a "C"-shaped pallet (302), and a counterweight (3... 03) Rubber buffer block (304) and rubber pad block (305); the pin shaft is connected to the first pin hole; the "C" shaped support plate (302) is fixed to the pin shaft; the "C" shaped support plate (302) is provided with a second pin hole; the counterweight (303) is fixed to the "C" shaped support plate (302); the rubber pad block (305) is bolted to the "C" shaped support plate (302); the rubber buffer block (304) is bolted to the "C" shaped support plate (302) and is located on the side facing away from the rubber pad block (305); the limiting unit includes a lower positioning mechanism (401), an upper fixing mechanism and a limiting mechanism.

2. The material rack with dynamic limiting and stackable automobile sunroof transfer and assembly integration according to claim 1, characterized in that: The load-bearing mechanism (301) includes a seventh steel pipe; first pin holes are equidistantly arranged on the side plate of the seventh steel pipe; the seventh steel pipe is arranged in a rectangular pattern on the base, and its upper end is connected to the connecting crossbar (104).

3. The stackable integrated material rack for transporting and assembling automotive sunroofs with dynamic limiting as described in claim 1, characterized in that: The base includes an iron plate (101) and a steel pipe frame mechanism (102); the steel pipe frame mechanism (102) includes a square frame structure, a "well" shaped structure and reinforcing short rods; the "well" shaped structure is set inside the square frame structure; the two ends of the reinforcing short rods are respectively set on the square frame structure and the "well" shaped structure; the iron plate (101) is set on the steel pipe frame mechanism (102); the protective vertical rods (103) are equidistantly set on the base and are distributed in a rectangular pattern; the protective vertical rods (103) include a fifth steel pipe; reinforcing diagonal rods and reinforcing plates are set between the protective vertical rods (103) and the base; the two ends of the connecting horizontal rods (104) are set on the sides of different protective vertical rods (103); the connecting horizontal rods (104) include a sixth steel pipe, on which a square label plate is set; a first container is set on the square label plate; the three sixth steel pipes are distributed in a "U" shape.

4. The material rack with dynamic limiting and stackable automobile sunroof transportation and assembly integration according to claim 1, characterized in that: The limiting rubber tube is disposed inside the annular rubber pad; the annular rubber pad is inserted into the outer side of the upper end of the protective vertical rod (103); the limiting rubber tube is inserted into the inner side of the upper end of the protective vertical rod (103); an annular limiting strip is provided on the inner side of the limiting rubber tube.

5. The material rack with dynamic limiting and stackable automobile sunroof transportation and assembly integration according to claim 1, characterized in that: The support plate (203) is in the shape of "J"; the support tube (202) is set on the base and located below the iron plate (101); one end of the support plate (203) is set on the base and the top surface is connected to the lower end of the support tube (202).

6. The material rack with dynamic limiting and stackable automobile skylight transfer and assembly integration of claim 1, wherein: The positioning tube (204) is set on the base and located below the iron plate (101) and the protective vertical rod (103); the positioning head (205) is set inside the positioning tube (204) and its lower end is in the shape of a four-sided pyramid, which is compatible with the top mechanism (201).

7. The material rack with dynamic limiting and stackable automobile skylight transfer and assembly integration according to claim 1, characterized in that: The lower positioning mechanism (401) includes angle steels symmetrically arranged on the base; and the four angle steels are arranged in a rectangular shape; a sliding hole is provided on the angle steel; the sliding hole is in the shape of "J"; the horizontal section of the sliding hole is located on one side plate of the angle steel; the inclined section of the sliding hole is located on the other side plate of the angle steel; the upper fixing mechanism includes a fixing plate (402), a movable handle (403) and a pressure rod; the fixing plate (402) is set on the connecting crossbar (104); a third pin hole is provided on the fixing plate (402); A positioning cylinder is installed in the third pin hole; a fourth pin hole is installed on the bottom plate of the positioning cylinder; the movable handle (403) is installed in the positioning cylinder by a return spring; the pressure rod is installed at the lower end of the movable handle (403) and is slidably connected in the fourth pin hole.

8. The material rack with dynamic limiting and stackable automobile skylight transfer and assembly integration of claim 1, wherein: The limiting mechanism includes a support structure, a second container, and a third container; the second container is disposed on the base; the third container is disposed on the fixed plate (402); the lower end pin of the support structure is connected to the second container, and the upper end pin is connected to the third container; the support structure includes a vertical rod, a limiting horizontal rod (404), a horizontal handle (405), a buffer sleeve, and a fan-shaped limiting plate (406); the upper and lower ends of the vertical rod are provided with universal balls; the limiting horizontal rod (404) is disposed on the vertical rod; the buffer sleeve is inserted into the limiting horizontal rod (404); the horizontal handle (405) is disposed on the vertical rod; and the horizontal handle (405) and the limiting horizontal rod (404) are perpendicular to each other; the fan-shaped limiting plate (406) is disposed on the vertical rod; the fan-shaped limiting plate (406) is provided with a positioning through hole and a second opening through groove, the second opening through groove being an arc-shaped opening through groove; the positioning through hole and the second opening through groove are both adapted to the pressure rod.

9. The material rack with dynamic limiting and stackable automobile sunroof transfer and assembly integration of claim 3, wherein: The first container has a first open through slot on its side plate.

10. The stackable integrated material rack for transporting and assembling automotive sunroofs with dynamic limiting as described in claim 3, characterized in that: The frame structure includes a first steel pipe; four first steel pipes are welded end to end; the "well" shaped structure includes a second steel pipe, a third steel pipe, and a fourth steel pipe; two second steel pipes are connected by a third steel pipe; the fourth steel pipe is symmetrically arranged on the second steel pipes; the second steel pipe, the third steel pipe, and the fourth steel pipe form a "well" shaped frame.

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