Sheet metal part processing and forming apparatus

Abstract

The application discloses a sheet metal part processing and forming equipment, which comprises a processing table, a plurality of rotating arms, a plurality of upper dies, two side punching and protruding dies and a plurality of pressure maintaining mechanisms, wherein the side wall of the processing table is provided with a hydraulic cylinder, the end of the hydraulic cylinder is provided with a lifting plate, and the side wall of the lifting plate is rotationally connected with a rotary table; the plurality of rotating arms are uniformly distributed on the rotary table, and the plurality of upper dies are respectively arranged at the ends of the corresponding rotating arms; two groups of linear driving mechanisms are symmetrically arranged on the processing table, the two side punching and protruding dies are respectively connected with the corresponding linear driving mechanisms, and the two opposite side walls of each side punching and protruding die are respectively provided with a toothed plate; the two opposite side walls of each rotating arm are respectively provided with a pressure maintaining mechanism, and the pressure maintaining mechanisms are intermittently connected with the toothed plates. Thus, the pressure maintaining mechanism is driven by the reset motion of the side punching and protruding die, the end of the formed T-shaped part is subjected to pressure maintaining, the springback is effectively inhibited, and the workpiece precision is improved. Meanwhile, continuous processing is supported, the single-piece forming time is significantly shortened, and the processing efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of sheet metal processing, and more particularly to a sheet metal processing and forming equipment. Background Technology

[0002] In the sheet metal manufacturing industry, T-shaped structural parts are widely used due to their excellent mechanical properties and connection functions. The traditional manufacturing process for this type of part usually includes the following steps: First, a rectangular sheet is positioned on a processing table and stamped vertically using a die to form the vertical protrusion of the T-shape; then, a horizontal stamping module stamps the sheet from both sides to complete the formation of the horizontal flange of the T-shape, ultimately forming the required T-shaped cross-section.

[0003] However, during the stamping process, after the horizontal stamping module is unloaded and reset, the end of the formed T-shaped part, i.e. the free end of the horizontal wing plate, often springs back due to elastic recovery and the release of residual stress, causing it to expand outward, resulting in dimensional deviations and out-of-tolerance form and position accuracy, which cannot meet the processing requirements.

[0004] To address this issue, two main correction schemes are currently employed. The first is the secondary forming method, where the workpiece is removed after the main stamping, repositioned, and clamped in a dedicated forming die, with pressure applied to the ends for correction. While this method improves accuracy, it increases the number of repetitive positioning, clamping, and processing steps, reducing production efficiency and leading to higher labor and equipment costs. The second is the pressure-holding delay method, where the die is held under pressure for a period after horizontal stamping, utilizing the stress relaxation effect to partially release internal stress and suppress springback. While this method avoids secondary clamping, it significantly extends the single-piece forming cycle, impacting production efficiency. Summary of the Invention

[0005] This application aims to at least partially address one of the technical problems in the related art.

[0006] Therefore, one objective of this application is to provide a sheet metal forming equipment that utilizes the resetting motion of a side punch to drive a pressure-holding mechanism, applying pressure to the end of the formed T-shaped part to effectively suppress springback and improve workpiece accuracy. It also supports continuous processing, significantly shortening the forming time for a single part and improving processing efficiency.

[0007] To achieve the above objectives, the first aspect of this application provides a sheet metal processing and forming equipment, including a processing table, multiple rotating arms, multiple upper dies, two side punches, and multiple pressure holding mechanisms. The processing table has hydraulic cylinders on its side walls, and lifting plates at the ends of the hydraulic cylinders. A turntable is rotatably connected to the side walls of the lifting plates. Multiple rotating arms are evenly distributed on the turntable, and multiple upper dies are respectively disposed at the ends of corresponding rotating arms. Lower dies matching the upper dies are embedded and installed on the processing table. Two sets of linear drive mechanisms are symmetrically arranged on the processing table, and the two side punches are respectively connected to their corresponding linear drive mechanisms. Toothed plates are provided on the two opposite side walls of each side punch. The pressure holding mechanisms are provided on the two opposite side walls of each rotating arm, and the pressure holding mechanisms intermittently engage with the toothed plates.

[0008] In addition, the sheet metal processing and forming equipment proposed in this application may also have the following additional technical features:

[0009] In one embodiment of this application, the pressure-holding mechanism includes two symmetrically arranged transmission components and a pressing component, wherein the sidewall of the rotating arm is symmetrically provided with two first grooves, and the two transmission components are respectively disposed in the corresponding first grooves; the pressing component is disposed between the two transmission components and is respectively connected to the transmission components.

[0010] In one embodiment of this application, the transmission assembly includes a gear, a lead screw, a nut slider, and a connecting plate, wherein the lead screw is rotatably disposed in the first groove; the gear is disposed on the lead screw and meshes with the gear plate; the nut slider is threadedly connected to the lead screw; and the connecting plate is connected to the nut slider.

[0011] In one embodiment of this application, the pressing assembly includes a support plate, a plurality of first springs, and a pressure plate, wherein the support plate is connected to the connecting plate; the plurality of first springs are evenly distributed on the side of the support plate adjacent to the rotating arm; the pressure plate is connected to the first springs, and the end of the pressure plate adjacent to the upper mold is an arc-shaped plate.

[0012] In one embodiment of this application, two positioning components are symmetrically arranged on the processing table. The positioning components include a mounting bracket, a second spring, and a positioning plate. The processing table has a second groove, and the mounting bracket is disposed in the second groove. The second spring is disposed in the mounting bracket. The positioning plate is connected to the top of the second spring, and the side of the positioning plate facing away from the lower mold is an inclined surface.

[0013] In one embodiment of this application, a locking plate is rotatably provided on the support plate, and a slot corresponding to the locking plate is provided on the side wall of the rotating arm.

[0014] In one embodiment of this application, the lifting plate is provided with an electric push rod, and the output end of the electric push rod is provided with a push plate.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: the two positioning components can position the rectangular sheet metal to ensure the processing accuracy of the T-shaped part, and the side punch return motion drives the pressure holding mechanism to maintain pressure on the end of the formed T-shaped part, effectively suppressing springback and improving workpiece accuracy. It also supports continuous processing, significantly shortening the single-piece forming time and improving processing efficiency.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of a sheet metal part processing and forming equipment according to one embodiment of this application. Figure 1 ;

[0019] Figure 2 For this application Figure 1 Enlarged structural diagram of area A in the middle;

[0020] Figure 3 This is a schematic diagram of the positioning component in a sheet metal processing and forming equipment according to an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the pressure holding mechanism in a sheet metal processing and forming equipment according to an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the pressing component in a sheet metal processing and forming equipment according to an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the structure of a sheet metal part processing and forming equipment according to one embodiment of this application. Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the structure of the second spring in its natural state in one embodiment of this application.

[0025] As shown in the figure: 1. Machining table; 2. Rotating arm; 3. Upper die; 4. Side punch; 5. Pressure holding mechanism; 6. Hydraulic cylinder; 7. Lifting plate; 8. Turntable; 9. Positioning assembly; 10. Linear drive mechanism; 11. Gear plate; 12. Second groove; 13. Locking plate; 14. Electric push rod; 15. Push plate; 21. First groove; 22. Slot; 51. Transmission assembly; 52. Pressing assembly; 511. Gear; 512. Lead screw; 513. Nut slider; 514. Connecting plate; 521. Support plate; 522. First spring; 523. Pressure plate; 91. Mounting bracket; 92. Second spring; 93. Positioning plate. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0027] The sheet metal processing and forming equipment of this application embodiment will be described below with reference to the accompanying drawings.

[0028] like Figures 1 to 6 As shown, the sheet metal processing and forming equipment of this application embodiment may include a processing table 1, multiple rotating arms 2, multiple upper dies 3, two side punches 4, and multiple pressure holding mechanisms 5.

[0029] The processing table 1 has a hydraulic cylinder 6 on its side wall, and a lifting plate 7 is provided at the end of the hydraulic cylinder 6. The side wall of the lifting plate 7 is rotatably connected to a turntable 8.

[0030] It should be noted that the turntable 8 is rotatably mounted on the lifting plate 7 via a support shaft, and the support shaft is connected to an external drive motor. The drive motor can drive the turntable 8 to rotate intermittently, and the intermittent dwell time and rotation angle are both set by the controller. The dwell time can be adjusted according to the forming requirements of the T-shaped sheet metal part, while the rotation angle depends on the number of rotating arms 2. Taking this application as an example, there are 4 rotating arms 2, so the controller sets the rotation angle of the turntable 8 to 90 degrees for each rotation.

[0031] Furthermore, the hydraulic cylinder 6 can lift the entire turntable 8 and the rotating arm 2, and during the rotation of the rotating arm 2, it can avoid motion interference with the processing table 1.

[0032] Multiple rotating arms 2 are evenly distributed on the turntable 8, and multiple upper molds 3 are respectively set at the ends of the corresponding rotating arms 2. The processing table 1 is embedded with a lower mold that matches the upper mold 3.

[0033] It should be noted that the upper mold 3 described in this embodiment is detachably mounted at the end of the rotating arm 2. By driving the rotating arm 2 to rotate, the upper mold 3 can be driven to rotate. When the upper mold 3 rotates to the bottom, the hydraulic cylinder 6 drives the turntable 8, the rotating arm 2 and the upper mold 3 to move downwards, so as to perform vertical stamping on the rectangular plate.

[0034] Further, see Figure 3 The lower mold has a cavity. When the upper mold 3 and the lower mold are closed, the rectangular plate is squeezed and deformed by the pressure of the upper mold 3, filling the lower mold cavity, and finally processed into a U-shaped plate structure.

[0035] Two sets of linear drive mechanisms 10 are symmetrically arranged on the processing table 1. The two side punches 4 are respectively connected to the corresponding linear drive mechanisms 10. The two opposing side walls of each side punch 4 are respectively provided with toothed plates 11.

[0036] It should be noted that two sets of linear drive mechanisms 10 are symmetrically arranged on both sides of the lower die, with each set of linear drive mechanisms 10 consisting of two units to provide stable support for the side punches 4. The linear drive mechanism 10 can be a slide module, with the side punches 4 mounted on the slide of the slide module. During operation, the linear drive mechanisms 10 on both sides synchronously drive the two side punches 4 to move in opposite directions, thereby simultaneously punching the two side plates of the U-shaped plate. This process coordinates with the action of the upper die 3 to ultimately form a T-shaped plate.

[0037] It needs to be explained that the sheet metal undergoes severe plastic deformation and accumulates internal stress during the stamping process. When the constraint of the side punch 4 is released, the elastic effect of the material causes it to attempt to return to its original shape. Since the constraint on the end of the T-shaped part is the weakest, it becomes the deformation concentration area, which makes its end prone to outward expansion deformation.

[0038] Each rotating arm 2 has two opposing sidewalls equipped with a pressure holding mechanism 5, which intermittently engages with the toothed plate 11. The pressure holding mechanism 5 is used to perform pressure holding treatment on the end of the T-shaped part.

[0039] It should be noted that each rotating arm 2 is matched with two pressure holding mechanisms 5. When the rotating arm 2 is directly below the turntable 8, the pressure holding mechanism 5 is connected to the toothed plate 11. When the toothed plate 11 moves with the side punch 4 towards the rotating arm 2, the toothed plate 11 and the transmission component 51 work together to drive the pressing component 52 to move upward. When the side punch 4 extrudes and deforms the side plate of the U-shaped plate, it will not interfere with the movement of the side punch 4, and finally form a T-shaped part. Conversely, when the side punch 4 resets (moves away from the rotating arm 2), the toothed plate 11 and the transmission component 51 work together to drive the pressing component 52 to move downward. The pressing component 52 is used to press the end of the T-shaped part to suppress its rebound and improve the processing accuracy of the T-shaped part.

[0040] To further clarify the above embodiments, in one embodiment of this application, such as Figure 4 and Figure 5 As shown, the pressure holding mechanism 5 includes two symmetrically arranged transmission components 51 and a pressing component 52. The side wall of the rotating arm 2 is symmetrically provided with two first grooves 21. The two transmission components 51 are respectively arranged in the corresponding first grooves 21. The pressing component 52 is arranged between the two transmission components 51 and is connected to the transmission components 51 respectively.

[0041] In the embodiments of this application, when the toothed plate 11 moves toward the rotating arm 2, its end is inserted into the first groove 21 and drives the transmission component 51 to rotate, thereby driving the pressing component 52 to move upward to avoid interfering with the stamping operation of the side punch 4. Conversely, when the toothed plate 11 moves away from the rotating arm 2, with the cooperation of the transmission component 51, it drives the pressing component 52 to move downward, and uses the pressing component 52 to apply pressure to the end of the T-shaped piece to suppress its rebound.

[0042] Furthermore, such as Figure 4 As shown, the transmission assembly 51 includes a gear 511, a lead screw 512, a nut slider 513, and a connecting plate 514. The lead screw 512 is rotatably disposed in the first groove 21, the gear 511 is disposed on the lead screw 512 and has a meshing relationship with the gear plate 11, the nut slider 513 is threadedly connected to the lead screw 512, and the connecting plate 514 is connected to the nut slider 513.

[0043] It should be noted that the nut slider 513 is slidably disposed in the first groove 21. The first groove 21 can guide the movement direction of the nut slider 513 and ensure that the nut slider 513 moves in a straight line.

[0044] Specifically, when the lead screw 512 rotates, it drives the nut slider 513 to move up or down along the axis of the lead screw 512, and through the connecting plate 514, it drives the pressure holding mechanism 5 to move up or down.

[0045] In one embodiment of this application, such as Figure 5 As shown, the pressing component 52 includes a support plate 521, a plurality of first springs 522 and a pressure plate 523. The support plate 521 is connected to the connecting plate 514. The plurality of first springs 522 are evenly distributed on the side of the support plate 521 near the rotating arm 2. The pressure plate 523 is connected to the first springs 522, and the end of the pressure plate 523 near the upper mold 3 is an arc-shaped plate.

[0046] It should be noted that when the first spring 522 is in its natural state, the distance between the pressure plate 523 and the rotating arm 2 is less than the thickness of the sheet material. The pressure plate 523 includes an arc-shaped section and a straight section. The straight section is parallel to the support plate 521, while the arc-shaped section expands outward so that the distance between it and the rotating arm 2 is greater than the distance between the straight section and the rotating arm 2. This arc-shaped structure helps the pressure plate 523 move more smoothly and be positioned at the end of the T-shaped piece.

[0047] Specifically, when the side punch 4 moves towards the upper die 3, it drives the toothed plate 11 to move. The toothed plate 11 meshes with the gear 511 and drives the gear 511 and the lead screw 512 to rotate in the first direction. At this time, the nut slider 513 drives the pressing component 52 to move upward, so as not to interfere with the punching action of the side punch 4, and finally forms a T-shaped part.

[0048] After the side punch 4 completes its stamping, the linear drive mechanism 10 drives the side punch 4 to reset, and through the meshing relationship between the toothed plate 11 and the gear 511, drives the lead screw 512 to rotate in the second direction. Subsequently, the nut slider 513 drives the pressing component 52 to move down. Due to the elastic deformation of the end of the T-shaped part, the arc-shaped section of the pressure plate 523 first contacts the end of the T-shaped part. As the pressure plate 523 moves down, it compresses the first spring 522, causing it to deform. This results in the straight section of the pressure plate 523 tightly fitting against the end of the T-shaped part and applying a certain pressure to the end that has undergone elastic deformation, thus suppressing its rebound. It can be understood that the rotation directions of the first direction and the second direction are opposite. If the first direction refers to counterclockwise rotation, then the second direction refers to clockwise rotation.

[0049] When the toothed plate 11 and the gear 511 separate, the pressure plate 523 presses tightly onto the T-shaped part. The hydraulic cylinder 6 drives the turntable 8 and the rotating arm 2 to move upward. Then, the turntable 8 is controlled to rotate, and the rotating arm 2 drives the T-shaped part to rotate 90 degrees. During the rotation, another upper die 3 will rotate to the vertical stamping area (i.e., above the lower die). At the same time, the sheet material to be stamped is placed back on the processing table 1, and the hydraulic cylinder 6 is controlled to start again. The hydraulic cylinder 6 drives the turntable 8, the rotating arm 2 and the upper die 3 to move downward to stamp the sheet material vertically, and then to stamp it horizontally.

[0050] In one embodiment of this application, such as Figure 3 As shown, two positioning components 9 are symmetrically arranged on the processing table 1. The positioning component 9 includes a mounting bracket 91, a second spring 92 and a positioning plate 93. The processing table 1 is provided with a second groove 12. The mounting bracket 91 is disposed in the second groove 12. The second spring 92 is disposed in the mounting bracket 91. The positioning plate 93 is connected to the top of the second spring 92, and the side of the positioning plate 93 facing away from the lower mold is an inclined surface.

[0051] It should be noted that the mounting bracket 91 is a U-shaped bracket, and the mounting bracket 91 can be fixed in the second groove 12 by bolts, thereby facilitating the replacement of the position of the positioning component 9.

[0052] Furthermore, the positioning plate 93 is slidably connected to the U-shaped frame. When the second spring 92 is in its natural state, one end of the positioning plate 93 extends above the second groove 12. And when the two side punches 4 are reset (the two side punches 4 are far apart from each other and are set near the two ends of the processing table 1), the two positioning components 9 are located between the two side punches 4.

[0053] In the embodiments of this application, see Figure 7 The opposite sides of the two positioning plates 93 are inclined surfaces, and when the second spring 92 is in its natural state, the lowest end of the inclined surface is flush with the upper surface of the processing table 1.

[0054] Specifically, the personnel place the rectangular sheet material between two positioning plates 93, which then position the sheet material. When the side punch 4 performs horizontal punching, it applies a lateral force to the positioning plates 93. This force is converted into downward movement through the inclined surface of the positioning plates 93, thereby compressing the second spring 92 and causing the positioning plates 93 to retract into the mounting bracket 91. After the side punch 4 resets, the compressed second spring 92 releases its elasticity, causing the positioning plates 93 to automatically reset.

[0055] In one embodiment of this application, such as Figure 5 As shown, a locking plate 13 is rotatably mounted on the support plate 521, and a slot 22 corresponding to the locking plate 13 is provided on the side wall of the rotating arm 2.

[0056] In the embodiments of this application, the locking plate 13 can be rotatably connected to the support plate 521 via a damping shaft. Before the rotating arm 2 drives the turntable 8 and the upper mold 3 to rotate, the locking plate 13 can be rotated to rotate one end of the locking plate 13 into the slot 22, thereby locking the T-shaped part and preventing the T-shaped part from separating from the upper mold 3.

[0057] Furthermore, such as Figure 6 As shown, the lifting plate 7 is equipped with an electric push rod 14, and the output end of the electric push rod 14 is equipped with a push plate 15.

[0058] In the embodiments of this application, the electric push rod 14 drives the push plate 15 to move, and the push plate 15 is used to separate the formed T-shaped part from the upper mold 3 to realize the function of unloading.

[0059] Specifically, the technicians place the rectangular sheet material to be processed between two positioning plates 93. Then, the hydraulic cylinder 6 drives the turntable 8, rotating arm 2, and upper die 3 to move downward. The upper die 3 performs vertical stamping on the sheet material to form a U-shaped sheet. Next, the linear drive mechanism 10 pushes the two side punches 4 to move towards each other, performing horizontal stamping on the U-shaped sheet, and finally forming a T-shaped part.

[0060] During this process, when the side punch 4 moves toward the center of the processing table 1, it drives the pressing component 52 to move upward through the cooperation of the toothed plate 11 and the transmission component 51. Conversely, when it moves outward, it drives the pressing component 52 to move downward, so that the pressing component 52 presses against the end of the T-shaped part, which plays a pressure-holding role, helps to suppress the elastic deformation of the workpiece, and improves the forming accuracy.

[0061] Subsequently, the turntable 8 drives the rotating arm 2 to rotate 90 degrees, causing the other upper die 3 to rotate above the lower die, repeating the above processing procedure. This enables continuous processing of T-shaped parts without waiting, significantly improving production efficiency. At the same time, the pressure-holding function of the pressure-holding component 52 further ensures the quality of the workpiece processing.

[0062] In summary, the sheet metal forming equipment of this application embodiment utilizes the reset motion of the side punch to drive the pressure holding mechanism, thereby applying pressure to the end of the formed T-shaped part, effectively suppressing springback and improving workpiece accuracy. It also supports continuous processing, significantly shortening the forming time per part and improving processing efficiency.

[0063] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A sheet metal parts processing and forming equipment, characterized in that, It includes a processing table, multiple rotating arms, multiple upper dies, two side punches, and multiple pressure holding mechanisms, among which, The processing table is equipped with a hydraulic cylinder on its side wall, and a lifting plate is provided at the end of the hydraulic cylinder. A turntable is rotatably connected to the side wall of the lifting plate. Multiple rotating arms are evenly distributed on the turntable, and multiple upper molds are respectively disposed at the ends of the corresponding rotating arms; A lower mold that matches the upper mold is embedded and installed on the processing table; Two sets of linear drive mechanisms are symmetrically arranged on the processing table. The two side punches are respectively connected to the corresponding linear drive mechanisms. Each side punch has a toothed plate on its two opposing side walls. Each of the two opposing sidewalls of the rotating arm is provided with a pressure-holding mechanism, which intermittently engages with the toothed plate, wherein the pressure-holding mechanism is used to perform pressure-holding treatment on the end of the T-shaped part.

2. The sheet metal processing and forming equipment according to claim 1, characterized in that, The pressure-holding mechanism includes two symmetrically arranged transmission components and a pressure-blocking component, wherein... The sidewall of the rotating arm is symmetrically provided with two first grooves, and the two transmission components are respectively disposed in the corresponding first grooves; The pressure-retaining component is disposed between the two transmission components and is connected to each of the transmission components.

3. The sheet metal processing and forming equipment according to claim 2, characterized in that, The transmission assembly includes gears, a lead screw, a nut slider, and a connecting plate, wherein... The lead screw is rotatably disposed within the first groove; The gear is mounted on the lead screw and meshes with the toothed plate. The nut slider is threadedly connected to the lead screw. The connecting plate is connected to the nut slider.

4. The sheet metal processing and forming equipment according to claim 3, characterized in that, The pressure-resistant assembly includes a support plate, multiple first springs, and a pressure plate, wherein... The support plate is connected to the connecting plate; Multiple first springs are evenly distributed on the side of the support plate adjacent to the rotating arm; The pressure plate is connected to the first spring, and the end of the pressure plate near the upper mold is an arc-shaped plate.

5. The sheet metal processing and forming equipment according to claim 1, characterized in that, Two positioning components are symmetrically arranged on the processing table. Each positioning component includes a mounting bracket, a second spring, and a positioning plate. The processing table is provided with a second groove, and the mounting bracket is disposed in the second groove; The second spring is disposed within the mounting bracket; The positioning plate is connected to the top of the second spring, and the side of the positioning plate facing away from the lower mold is an inclined surface.

6. The sheet metal processing and forming equipment according to claim 4, characterized in that, A locking plate is rotatably provided on the support plate, and a slot corresponding to the locking plate is provided on the side wall of the rotating arm.

7. The sheet metal processing and forming equipment according to claim 1, characterized in that, The lifting plate is equipped with an electric push rod, and the output end of the electric push rod is equipped with a push plate.

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