Automatic production line for shearing and blanking automobile plates

Abstract

The invention discloses an automatic production line for automobile plate shearing and blanking, and relates to the technical field of automobile plate shearing and blanking. The automatic automobile plate shearing and blanking production line comprises a bottom frame and an L-shaped truss fixedly connected to the bottom frame, a stacking box is fixedly connected between the front cavity wall and the rear cavity wall of the bottom frame through a supporting rod, a partition bearing bottom is jointly arranged between the left cavity wall and the right cavity wall of the stacking box, wheel carriers are fixedly connected to the close ends of two electric telescopic rods, and pushing cylinders are rotationally connected to the wheel carriers; by means of the blanking mode that the right-trapezoid-shaped automobile plates with different bevel edge orientations are firstly stacked in a unified mode and then are automatically separated and stacked according to the bevel edge orientations, sorting can be completed without an additional conveying path, the conveying stroke is shortened, the occupied space is reduced, the conveying efficiency is improved, and the production cost is reduced. And the production line layout is simplified, and the stability and the production efficiency of continuous utilization of the plates are improved.

Description

Technical Field

[0001] This invention relates to the field of automotive sheet metal cutting and blanking technology, specifically to an automated production line for automotive sheet metal cutting and blanking. Background Technology

[0002] Shearing and blanking of automotive sheet metal is one of the preceding processes in automotive stamping. It mainly involves shearing or punching coiled or sheeted steel plates according to process requirements to obtain sheet metal with the required size and shape. The sheet metal is then neatly stacked using automated stacking equipment for transfer to subsequent stamping processes. In the process of cutting and blanking automotive sheet metal, different shapes of blanks correspond to the forming requirements of different parts. One typical type is the right-angled trapezoidal sheet metal, which is usually used in the production of automotive body structural parts or reinforcements, such as the side panel reinforcement. This type of sheet metal is not directly formed by traditional rectangular or irregular-shaped punching dies, but is cut by a slewing shear with a reciprocating oscillating blade. Its initial form is mostly a long strip of steel sheet blank. After being reciprocated by the slewing shear along specific angles and dimensional parameters, it is gradually cut into right-angled trapezoidal blanks and sent to the stacking station by a conveying device. The cut right-angled trapezoidal sheet metal needs to be conveyed to the stacking station and neatly stacked together to form regular blank stacking units, which facilitates subsequent handling, transfer, and continuous feeding and use in the stamping process.

[0003] Due to the geometric characteristics of a right trapezoid, adjacent pieces of material are often centrally symmetrical during cutting, meaning their left and right diagonal directions are opposite. Therefore, in the subsequent material stacking process, the orientation of the materials may not be uniform (e.g., ...). Figure 6 As shown in b), this results in the misalignment of the upper and lower layers of blanks, which is not conducive to direct utilization under batch and automation conditions. Although some production lines use sorting devices to transport right-angled trapezoidal blanks with different orientations to different conveying paths to ensure that the blanks on each conveying line are aligned, this method inevitably increases the number of production line equipment. This not only makes the layout of the entire production line more complex, but also forces the conveying path to be longer, increases the number of material flow links, and leads to increased floor space, decreased conveying efficiency, increased maintenance difficulty, and even problems such as misalignment and congestion of boards under high-speed production conditions. Summary of the Invention

[0004] This invention provides an automated production line for cutting and blanking automotive sheet metal. It solves the problem that in the current process of cutting right-angled trapezoidal automotive sheet metal, adjacent pieces are often centrally symmetrically distributed, resulting in inconsistent sheet orientation and misalignment during subsequent stacking, which is not conducive to automated utilization. Although some methods of sorting sheets with different orientations to different paths can solve the problem of orientation consistency, they increase the number of equipment, extend the conveying path, occupy a large space, and complicate material flow.

[0005] This invention provides an automated production line for cutting and blanking automotive sheet metal, comprising a base frame and an L-shaped truss fixedly connected to the base frame. A stacking box is fixedly connected between the front and rear walls of the base frame via support rods. A partitioned support bottom is provided between the left and right walls of the stacking box. The stacking box is equipped with a receiving mechanism for automatically receiving sheet metal conveyed by the conveyor line and placing it onto the partitioned support bottom. The stacking box is equipped with a transverse alignment part that is linked to the receiving mechanism to align the stacked sheet metal from the front and rear directions. The base frame is equipped with a part for sequentially aligning with the partitioned support bottom and the transverse alignment part. The system includes a separation stacking section that allows stacked boards to be placed separately according to the orientation of the inclined plane. The separation stacking section includes an electric sliding frame that is slidably connected to the base frame, two receiving boxes that are staggered to the left and right and centrally symmetrically distributed and fixedly connected to the upper side of the electric sliding frame, and two electric telescopic rods that are fixedly connected to the base frame by fixing blocks. The two electric telescopic rods are staggered to the front and rear and centrally symmetrically distributed. Wheel frames are fixedly connected to the near ends of the two electric telescopic rods. Push cylinders are rotatably connected to the wheel frames. The L-shaped truss is provided with a longitudinal alignment section for aligning the left and right sides of the stacked boards.

[0006] In one possible implementation, the partitioned support bottom includes a fixed bottom plate fixedly connected to the lower middle part between the left and right cavity walls of the stack box. The lower end face of the fixed bottom plate is symmetrically hinged with connecting rod groups through connecting ear plates, and the connecting rod groups are arranged in two rows symmetrically on the left and right. The side of the left and right adjacent connecting rod groups away from the fixed bottom plate is hinged together with a movable bottom plate through ear plates. The lower end face of the fixed bottom plate is fixedly connected with four inclined plates corresponding to the connecting rod groups respectively. The inclined plates and their corresponding connecting rod groups are fixedly connected with a top spring.

[0007] In one possible implementation, the receiving mechanism includes two receiving seats that are symmetrically hinged to the upper end face of the stacking box via a support column. Several mounting slots are equidistantly provided on opposite sides of the two receiving seats. A guide roller is rotatably connected in each mounting slot. A drive unit for driving the two receiving seats to move towards each other is provided on the right end face of the stacking box.

[0008] In one possible implementation, the longitudinal alignment section includes an electric telescopic rod II fixedly connected to the L-shaped truss. The lower end of the electric telescopic rod II is fixedly connected to two portal-shaped guide frames that are offset to the left and right and centrally symmetrically distributed. An arc-shaped guide plate is fixedly connected to the lower side of the vertical section of the portal-shaped guide frame.

[0009] In one possible implementation, the drive unit includes a sliding sleeve fixedly connected to the right end face of the stack box, an electric slide block slidably connected in the sliding sleeve, and two push-pull rods corresponding to the receiving seats symmetrically hinged to the upper part of the electric slide block. The upper end of the push-pull rod is hinged to the side of the corresponding receiving seat.

[0010] In one possible implementation, the lateral alignment part includes two sliding grooves symmetrically opened on the right wall panel of the stack box, a sliding sleeve slidably connected in the sliding groove, a sliding rod slidably connected in the sliding sleeve, and a push plate fixedly connected to the left end of the sliding rod. A limiting spring is movably sleeved on the outside of the section of the sliding rod located between the push plate and the sliding sleeve. A connecting sleeve is slidably connected to the outside of the sliding rod. A push-pull rod is hinged between the connecting sleeve and the electric slide block.

[0011] In one possible implementation, the left wall of the stacking box is provided with C-shaped through grooves corresponding to the position of the receiving box, and the right wall of the stacking box is provided with strip-shaped through grooves corresponding to the push cylinder located on the right.

[0012] In one possible implementation, the left side of the moving base plate is an inclined surface that is lower on the left and higher on the right, and the lower right side of the receiving box is rotatably connected by an embedded roller for engaging with the inclined surface on the left side of the moving base plate.

[0013] In one possible implementation, the left and right ends of the sliding rod are fixedly connected to limit blocks, and the sliding sleeve consists of a rectangular sleeve and two rectangular rings that are symmetrically fixed to the outer wall of the rectangular sleeve.

[0014] As can be seen from the above technical solutions, the present invention has the following advantages: In the present invention, by first stacking automotive sheet metal with different inclined edges and aligning the edges, and then directionally pressing the inclined edges, the two sets of sheet metal are automatically separated. Sheet metal sorting can be achieved without additional conveying paths, which not only shortens the conveying journey and reduces the space occupied, but also simplifies the production line layout and improves the stability and efficiency of continuous use of sheet metal.

[0015] In this invention, the material unloading method of unified stacking and then separation significantly compresses the conveying links and paths, reduces the number of handling and switching operations, makes the movement of the plates more continuous, suppresses cumulative errors and cycle fluctuations, and can still maintain stacking stability under high-speed conditions, reducing the risk of micro-stops and line stoppages caused by misalignment and congestion. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the automatic production line for cutting and blanking automotive sheet metal provided by the present invention.

[0018] Figure 2 This is a schematic diagram of the installation structure of the receiving mechanism provided by the present invention.

[0019] Figure 3 This is a schematic diagram of the partitioned support bottom structure provided by the present invention.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the partitioned support base provided by the present invention, viewed from an upward angle.

[0021] Figure 5 Provided by the present invention Figure 4 An enlarged schematic diagram of part A of the structure.

[0022] Figure 6 This is a diagram showing the state changes of automotive sheet metal from cutting to stacking and separation.

[0023] The above-mentioned attached drawings include the following reference numerals: 1. Base frame; 2. L-shaped truss; 3. Stacking box; 4. Partitioned support base; 41. Fixed base plate; 42. Linkage group; 43. Moving base plate; 44. Top spring; 5. Receiving mechanism; 51. Receiving seat; 52. Guide roller; 53. Drive unit; 531. Sliding sleeve; 532. Electric sliding seat; 533. Push-pull rod one; 6. Lateral alignment part; 61. Sliding groove; 62. Sliding sleeve; 63. Sliding rod; 64. Push plate; 65. Connecting sleeve; 66. Push-pull rod two; 7. Separation stacking part; 71. Electric sliding frame; 72. Receiving box; 73. Electric telescopic rod one; 74. Push cylinder; 8. Longitudinal alignment part; 81. Electric telescopic rod two; 82. Gate-shaped guide frame; 9. Strip channel; 10. Roller; 11. Limiting block. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Please see Figure 1 and Figure 2 This invention provides a technical solution: an automatic production line for cutting and blanking automotive sheet metal, comprising a base frame 1 and an L-shaped truss 2 fixedly connected to the base frame 1. A stacking box 3 is fixedly connected between the front and rear cavity walls of the base frame 1 by a support rod. A partitioned support bottom 4 is provided between the left and right cavity walls of the stacking box 3. A receiving mechanism 5 is provided on the stacking box 3 for automatically receiving the sheet metal conveyed by the conveyor line and placing it on the partitioned support bottom 4. A transverse alignment part 6 is provided on the stacking box 3 for aligning the stacked sheet metal from the front and rear directions in conjunction with the receiving mechanism 5. A separation stacking part 7 is provided on the base frame 1 for sequentially linking with the partitioned support bottom 4 and the transverse alignment part 6 to uniformly separate the stacked sheet metal according to the inclined plane orientation. A longitudinal alignment part 8 is provided on the L-shaped truss 2 for aligning the left and right sides of the stacked sheet metal.

[0026] Please see Figure 3 and Figure 4 In this embodiment, the partition support bottom 4 includes a fixed bottom plate 41 fixedly connected to the lower middle part between the left and right cavity walls of the stacking box 3. The lower end face of the fixed bottom plate 41 is symmetrically hinged with connecting rod groups 42 through connecting ear plates. The connecting rod groups 42 are arranged in two rows symmetrically on the left and right. The side of the left and right adjacent connecting rod groups 42 away from the fixed bottom plate 41 is hinged with a movable bottom plate 43 through an ear plate. The lower end face of the fixed bottom plate 41 is fixedly connected with four inclined plates corresponding to the connecting rod groups 42. The inclined plates and their corresponding connecting rod groups 42 are fixedly connected with a top spring 44.

[0027] Please see Figure 1 and Figure 2 In this embodiment, the receiving mechanism 5 includes two receiving seats 51 that are symmetrically hinged to the upper end face of the stacking box 3 by a support column. Several mounting slots are equidistantly opened on opposite sides of the two receiving seats 51. A guide roller 52 is rotatably connected in each mounting slot. A drive unit 53 for driving the two receiving seats 51 to move towards each other is provided on the right end face of the stacking box 3. The drive unit 53 includes a sliding sleeve 531 fixedly connected to the right end face of the stacking box 3. An electric slide block 532 is slidably connected in the sliding sleeve 531. Two push-pull rods 533 corresponding to the receiving seats 51 are symmetrically hinged to the upper part of the electric slide block 532. The upper end of the push-pull rod 533 is hinged to the side of the corresponding receiving seat 51.

[0028] Please see Figure 2 , Figure 4 and Figure 5In this embodiment, the lateral alignment part 6 includes two sliding grooves 61 symmetrically opened on the right wall of the stack box 3, a sliding sleeve 62 slidably connected in the sliding groove 61, a sliding rod 63 slidably connected in the sliding sleeve 62, and a push plate 64 fixedly connected to the left end of the sliding rod 63. A limiting spring is movably sleeved on the outside of the section of the sliding rod 63 between the push plate 64 and the sliding sleeve 62. A connecting sleeve 65 is slidably connected to the outside of the sliding rod 63. A push-pull rod 66 is hinged between the connecting sleeve 65 and the electric slide block 532. A limiting block 11 is fixedly connected to the left and right ends of the sliding rod 63. The sliding sleeve 62 is composed of a rectangular sleeve and two rectangular rings symmetrically fixedly connected to the outer wall of the rectangular sleeve.

[0029] Please see Figure 1 In this embodiment, the longitudinal alignment part 8 includes an electric telescopic rod 81 fixedly connected to the L-shaped truss 2. The lower end of the electric telescopic rod 81 is fixedly connected to two gate-shaped guide frames 82 that are offset to the left and right and centrally symmetrically distributed. An arc-shaped guide plate is fixedly connected to the lower side of the vertical section of the gate-shaped guide frame 82.

[0030] The movable base plate 43 is initially positioned on the same horizontal plane as the fixed base plate 41. The bottom frame 1 is moved so that the left side of the receiving mechanism 5 is located at the exit of the conveyor line for conveying the cut right-angled trapezoidal automotive sheet metal (hereinafter referred to as sheet metal). The conveyed sheet metal moves to the right in sequence and enters the receiving seat 51, and moves on the guide roller 52. When the sheet metal is completely in the receiving seat 51, the electric slide 532 slides downward and then pulls the receiving seat 51 downward around the hinge with the support column through the push-pull rod 533, so that the sheet metal falls downward into the stacking box 3, and then enters the fixed base plate 41 and the movable base plate 43. Then the electric slide 532 starts to move upward and pushes the two receiving seats 51 upward through the push-pull rod 533 until it returns to the initial horizontal state so as to catch the arrival of the next sheet metal.

[0031] The electric slide block 532 slides upward while simultaneously pulling the connecting sleeve 65 along the sliding groove 61 via the push-pull rod 66, causing the two connecting sleeves 65 to move closer to each other. The connecting sleeves 65 then drive the push plate 64 to move via the sliding rod 63. The push plate 64 touches the front and rear sides of the plates stacked on the fixed base plate 41 and the moving base plate 43, aligning the plates. Each time the electric slide block 532 moves downward, the two push plates 64 are driven to move away from each other, and vice versa, the two push plates 64 move closer to each other, thus aligning the front and rear sides of the plates each time they enter the stacking box 3.

[0032] When a single strip of steel billet is completely cut, the feeding of the plate into the stacking box 3 is temporarily stopped. Then, the electric slide 532 is controlled to move downward, causing the receiving seat 51 to flip downward, and at the same time, the push plate 64 is separated from the plate. Then, the electric telescopic rod 81 is controlled to extend, causing the connecting plate to move downward. The connecting plate then causes the two portal guide frames 82 to move downward. When the portal guide frames 82 move downward, the arc guide plate comes into contact with the plate, pushing the plates with the same inclined side to move laterally, aligning the left and right sides of the plates with the same inclined side. Since the two portal guide frames 82 are staggered left and right, the two plates with different inclined sides will move away from each other by a distance, and the trapezoidal sharp corner of the plate will protrude from the side.

[0033] Please see Figure 1 , Figure 2 and Figure 3 In this embodiment, the separation stacking section 7 includes an electric sliding frame 71 slidably connected to the bottom frame 1, two receiving boxes 72 that are offset to the left and right and centrally symmetrically distributed and fixedly connected to the upper side of the electric sliding frame 71, and two electric telescopic rods 73 that are fixedly connected to the bottom frame 1 by fixing blocks. The two electric telescopic rods 73 are offset to the front and back and centrally symmetrically distributed. Wheel frames are fixedly connected to the near ends of the two electric telescopic rods 73. Push cylinders 74 are rotatably connected to the wheel frames. C-shaped through grooves corresponding to the positions of the receiving boxes 72 are symmetrically opened on the left wall of the stacking box 3. Strip through grooves 9 corresponding to the push cylinders 74 located on the right side are opened on the right wall of the stacking box 3. The left side of the moving bottom plate 43 is a slope with the left side lower and the right side higher. Rollers 10 for cooperating with the slope of the left side of the moving bottom plate 43 are rotatably connected to the lower right side of the receiving box 72 by embedding.

[0034] After the portal guide frame 82 moves down to fully align the plates with the same diagonal orientation (e.g.) Figure 6 As shown in b), the electric sliding frame 71 is controlled to move to the right, and the electric sliding frame 71 then drives the receiving box 72 to move synchronously. During the movement of the receiving box 72 to the right, the roller 10 will first touch the inclined surface of the moving base plate 43. The roller 10 and the inclined surface of the moving base plate 43 will press and push the moving base plate 43 downward. Then the moving base plate 43 will drive the connecting rod group 42 to rotate downward, so that the moving base plate 43 drops to a position lower than the fixed base plate 41. Then the receiving box 72 will slide to the upper side of the moving base plate 43. After the receiving box 72 continues to move to the right for a certain distance, it will touch the upper left side of the push plate 64 and push the push plate 64 to move to the right synchronously. The push plate 64 will then drive the sliding rod 63 to slide in the sliding sleeve 62 and the connecting sleeve 65. The limit spring is compressed until the opening of the receiving box 72 is aligned with the gate-shaped guide frame 82 located on the same side (the vertical section spacing of the gate-shaped guide frame 82 is equal to the left and right spacing of the receiving box 72).

[0035] Then, the electric telescopic rod 73 is extended and driven by the wheel frame to move the pusher 74. The pusher 74 on the left enters the inner cavity of the stacking box 3 through the C-shaped through-slot, while the pusher 74 on the right enters the inner cavity of the stacking box 3 through the strip through-slot 9. The pusher 74 then touches the inclined edge of the plate, squeezing the plate away from the center of the stacking box 3, causing the two sets of plates with different inclined edges to move away from each other. The plates gradually slide into the receiving box 72. When the pusher 74 moves to the part where the two portal guide frames 82 are close to each other, the electric telescopic rod 81 is retracted to move the portal guide frame 82 upward and reset. Then, the electric telescopic rod 73 is reset and retracted to move the pusher 74 back to its original position. Then, the electric sliding frame 71 is moved to the left to move the receiving box 72 synchronously. The receiving box 72 then moves the two sets of plates that have been automatically separated out from the stacking box 3 (the changes in the stacked plates can be referred to...). Figure 6 (See the diagram showing the change from b to c), thus allowing the separated boards to be used directly in the future.

[0036] In addition, several rotating rollers can be equidistantly connected to the left and right cavity walls of the receiving frame by means of embedding. When the plate is pushed into the receiving frame, the straight edges of the plate with opposite inclined sides abut against the rotating rollers. The rotation of the rotating rollers reduces the resistance of the plate entering the receiving box 72.

[0037] It is worth noting that the existing method of transporting right-angled trapezoidal plates with different left and right orientations to different locations and then stacking them can also achieve the purpose of classifying and stacking the plates according to the orientation of their hypotenuses. However, this method requires multiple sets of conveying devices, resulting in a large production line footprint, extended conveying paths, and increased material transfer links. This not only complicates the production line layout but also affects transportation efficiency. In contrast, this invention uses a method of collecting right-angled trapezoidal plates at the same stacking station and then further dividing and stacking them according to the orientation of their hypotenuses within the stacking unit. This avoids redundant configuration of multiple conveying lines, significantly reduces the production line footprint, shortens the plate conveying path, reduces the difficulty of material handling and energy consumption, and significantly improves the compactness of the unloading process and overall production efficiency.

[0038] During operation, the receiving mechanism 5 first feeds the sequentially delivered boards into the stacking box 3. While the receiving mechanism 5 is running, it triggers the operation of the transverse alignment part 6, which aligns the front and back sides of the boards stacked together in the stacking box 3 in real time. After a batch of boards is stacked, the longitudinal alignment part 8 is controlled to align the left and right sides of the boards and push boards with the same diagonal orientation, so that two boards with different diagonal orientations are misaligned by a certain distance. Finally, the separation stacking part 7 is controlled to push the two sets of boards with different diagonal orientations in the stacking box into the two receiving boxes 72 respectively. After the two receiving boxes 72 have received the boards, they are reset and moved.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automated production line for cutting and blanking automotive sheet metal, comprising a base frame and an L-shaped truss fixedly connected to the base frame, characterized in that: A stacking box is fixedly connected between the front and rear cavity walls of the bottom frame by a support rod. A partition support bottom is provided between the left and right cavity walls of the stacking box. The stacking box is provided with a receiving mechanism for automatically receiving the plates conveyed by the conveyor line and placing them on the partition support bottom. The stacking box is provided with a transverse alignment part that is linked with the receiving mechanism to align the stacked plates from the front and rear directions. The bottom frame is provided with a separation stacking part that is linked in sequence with the partition support bottom and the transverse alignment part to separate the stacked plates according to the slope orientation. The separation and stacking section includes an electric sliding frame slidably connected to the bottom frame, two receiving boxes that are offset to the left and right and centrally symmetrically distributed and fixedly connected to the upper side of the electric sliding frame, and two electric telescopic rods that are fixedly connected to the bottom frame by fixing blocks. The two electric telescopic rods are offset to the front and back and centrally symmetrically distributed. Wheel frames are fixedly connected to the near ends of the two electric telescopic rods, and push cylinders are rotatably connected to the wheel frames. The L-shaped truss is provided with a longitudinal alignment section for aligning the left and right sides of the stacked plates.

2. The automatic production line for cutting and blanking automotive sheet metal according to claim 1, characterized in that: The partitioned support bottom includes a fixed bottom plate fixedly connected to the lower middle part between the left and right cavity walls of the stack box. The lower end face of the fixed bottom plate is symmetrically hinged with connecting rod groups through connecting ear plates. The connecting rod groups are arranged in two rows symmetrically on the left and right. The side of the left and right adjacent connecting rod groups away from the fixed bottom plate is hinged together with a movable bottom plate through ear plates. The lower end face of the fixed bottom plate is fixedly connected with four inclined plates corresponding to the connecting rod groups. The inclined plates and their corresponding connecting rod groups are fixedly connected with top springs.

3. The automatic production line for cutting and blanking automotive sheet metal according to claim 1, characterized in that: The receiving mechanism includes two receiving seats that are symmetrically hinged to the upper end face of the stacking box via a support column. Several mounting slots are equidistantly provided on opposite sides of the two receiving seats. A guide roller is rotatably connected in each mounting slot. A drive unit for driving the two receiving seats to move towards each other is provided on the right end face of the stacking box.

4. The automatic production line for cutting and blanking automotive sheet metal according to claim 1, characterized in that: The longitudinal alignment section includes an electric telescopic rod II fixedly connected to the L-shaped truss. The lower end of the electric telescopic rod II is fixedly connected to two gate-shaped guide frames that are offset to the left and right and centrally symmetrically distributed. An arc-shaped guide plate is fixedly connected to the lower side of the vertical section of the gate-shaped guide frame.

5. The automatic production line for cutting and blanking automotive sheet metal according to claim 3, characterized in that: The drive unit includes a sliding sleeve fixedly connected to the right end face of the stack box. An electric slide block is slidably connected in the sliding sleeve. Two push-pull rods corresponding to the receiving seats are symmetrically hinged to the upper part of the electric slide block. The upper end of the push-pull rod is hinged to the side of the corresponding receiving seat.

6. The automatic production line for cutting and blanking automotive sheet metal according to claim 5, characterized in that: The lateral alignment section includes two sliding grooves symmetrically opened on the right wall panel of the stack box, a sliding sleeve slidably connected in the sliding groove, a sliding rod slidably connected in the sliding sleeve, and a push plate fixedly connected to the left end of the sliding rod. A limiting spring is movably sleeved on the outside of the section of the sliding rod located between the push plate and the sliding sleeve. A connecting sleeve is slidably connected to the outside of the sliding rod. A push-pull rod is hinged between the connecting sleeve and the electric slide block.

7. The automatic production line for cutting and blanking automotive sheet metal according to claim 1, characterized in that: The left wall of the stacking box has symmetrically arranged C-shaped through grooves corresponding to the position of the receiving box, and the right wall of the stacking box has a strip-shaped through groove corresponding to the push cylinder located on the right.

8. The automatic production line for cutting and blanking automotive sheet metal according to claim 1, characterized in that: The left side of the moving base plate is an inclined surface that is lower on the left and higher on the right. The lower right side of the receiving box is rotatably connected to rollers that cooperate with the inclined surface on the left side of the moving base plate by means of embedding.

9. An automatic production line for cutting and blanking automotive sheet metal according to claim 6, characterized in that: The left and right ends of the sliding rod are fixedly connected to limit blocks, and the sliding sleeve is composed of a rectangular sleeve and two rectangular rings that are symmetrically fixed to the outer wall of the rectangular sleeve.

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