Sheet metal part machining and forming equipment

Abstract

The sheet metal part machining and forming equipment comprises a machining table, a plurality of rotating arms, a plurality of upper dies, two side punching male dies and a plurality of pressure maintaining mechanisms, a hydraulic cylinder is arranged on the side wall of the machining table, a lifting plate is arranged at the end of the hydraulic cylinder, and a rotating table is rotationally connected to the side wall of the lifting plate; the multiple rotating arms are evenly distributed on the rotating table, and the multiple upper dies are arranged at the ends of the corresponding rotating arms respectively. Two sets of linear driving mechanisms are symmetrically arranged on the machining table, the two side punching male dies are connected with the corresponding linear driving mechanisms respectively, and toothed plates are arranged on the two opposite side walls of each side punching male die respectively. Pressure maintaining mechanisms are arranged on the two opposite side walls of each rotating arm correspondingly and intermittently connected with the toothed plate. Therefore, the pressure maintaining mechanism is driven by the reset motion of the side punching male die, pressure maintaining is carried out on the end portion of the formed T-shaped piece, springback is effectively restrained, and the precision of the workpiece is improved. And meanwhile, continuous machining is supported, the single-piece forming time is remarkably shortened, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sheet metal processing, and particularly relates to a sheet metal processing forming equipment. BACKGROUND

[0002] In the field of sheet metal manufacturing, T-shaped structural parts are widely used due to their excellent mechanical properties and connection functions. The traditional manufacturing process of such parts usually includes the following steps: first, position a rectangular plate on a processing table, vertically stamp the plate through a die to form a vertical protruding part of the T-shaped part; then, stamp the plate from both sides by a horizontal stamping module to complete the forming of the horizontal wing plate of the T-shaped part, and finally form the required T-shaped cross section.

[0003] However, during the stamping process, after the horizontal stamping module unloads and resets, the end of the formed T-shaped part, i.e. the free end of the horizontal wing plate, often deforms due to elastic recovery and release of residual stress, causing it to expand outward, resulting in size deviation and shape and position accuracy deviation, which cannot meet the processing requirements.

[0004] To address this problem, two correction schemes are currently used. One is the secondary shaping method, which takes out the workpiece after primary stamping, repositions and clamps it in a special shaping die, and corrects the end by applying pressure. This method can improve accuracy, but it increases the repeated positioning, clamping and processing procedures, which not only reduces production efficiency, but also brings higher labor and equipment costs. The second is the pressure retention delay method, which keeps the die pressure after horizontal stamping for a period of time to release internal stress by stress relaxation effect, thereby inhibiting springback. This method avoids secondary clamping, but significantly prolongs the single piece forming cycle, affecting production efficiency. SUMMARY

[0005] The present application aims to at least partially solve one of the technical problems in the related art.

[0006] To this end, one purpose of the present application is to provide a sheet metal processing forming equipment, which uses the reset motion of the side punch protrusion die to drive the pressure retention mechanism to implement pressure retention on the end of the formed T-shaped part, effectively inhibit springback, and improve workpiece accuracy. At the same time, it also supports continuous processing, significantly shortens the single piece forming time, and improves the processing efficiency.

[0007] To achieve the above object, the first aspect of the present application proposes a sheet metal part processing and forming equipment, comprising a processing table, a plurality of rotating arms, a plurality of upper molds, two side punching and protruding molds 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; a plurality of rotating arms are uniformly distributed on the rotary table, and a plurality of upper molds are respectively arranged at the end of the corresponding rotating arm; a lower mold matched with the upper mold is embedded and arranged on the processing table; two groups of linear driving mechanisms are symmetrically arranged on the processing table, and two side punching and protruding molds are respectively connected with the corresponding linear driving mechanisms, and two opposite side walls of each side punching and protruding mold are respectively provided with a toothed plate; two opposite side walls of each rotating arm are respectively provided with the pressure maintaining mechanism, and the pressure maintaining mechanism is intermittently engaged with the toothed plate.

[0008] In addition, the sheet metal part processing and forming equipment proposed in the present application can have the following additional technical features: In an embodiment of the present application, the pressure maintaining mechanism comprises two symmetrically arranged transmission assemblies and a pressing assembly, wherein the side wall of the rotating arm is symmetrically provided with two first grooves, and two transmission assemblies are respectively arranged in the corresponding first grooves; the pressing assembly is arranged between the two transmission assemblies and is respectively connected with the transmission assemblies.

[0009] In an embodiment of the present application, the transmission assembly comprises a gear, a lead screw, a nut block and a connecting plate, wherein the lead screw is rotationally arranged in the first groove; the gear is arranged on the lead screw and has an engagement relationship with the toothed plate; the nut block is threadedly connected with the lead screw; and the connecting plate is connected with the nut block.

[0010] In an embodiment of the present application, the pressing assembly comprises a support plate, a plurality of first springs and a pressing plate, wherein the support plate is connected with the connecting plate; a plurality of first springs are uniformly distributed on one side of the support plate close to the rotating arm; the pressing plate is connected with the first springs, and one end of the pressing plate close to the upper mold is an arc plate.

[0011] In an embodiment of the present application, two positioning assemblies are symmetrically arranged on the processing table, the positioning assembly comprises a mounting frame, a second spring and a positioning plate, wherein the processing table is provided with a second groove, the mounting frame is arranged in the second groove; the second spring is arranged in the mounting frame; the positioning plate is connected with the top of the second spring, and one side of the positioning plate away from the lower mold is an inclined surface.

[0012] In an embodiment of the present application, a locking plate is rotationally arranged on the support plate, and a clamping groove corresponding to the locking plate is arranged on the side wall of the rotating arm.

[0013] In one embodiment of the present 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.

[0014] Compared with the prior art, the present application has at least the following beneficial effects: two positioning assemblies can position the rectangular plate, ensure the machining precision of the T-shaped part, and the side punch protrusion die reset movement drives the pressure maintaining mechanism to maintain the pressure of the formed end of the T-shaped part, effectively suppresses the springback, and improves the workpiece precision. Meanwhile, it also supports continuous machining, significantly shortens the single piece forming time, and improves the machining efficiency.

[0015] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, in which: Figure 1 Structure diagram of the sheet metal part machining and forming equipment of one embodiment of the present application Figure 1 ; Figure 2 Structure diagram of the sheet metal part machining and forming equipment of one embodiment of the present application Figure 1 ; Figure 3 Structure diagram of the positioning assembly of the sheet metal part machining and forming equipment of one embodiment of the present application Figure 4 Structure diagram of the pressure maintaining mechanism of the sheet metal part machining and forming equipment of one embodiment of the present application Figure 5 Structure diagram of the pressure maintaining mechanism of the sheet metal part machining and forming equipment of one embodiment of the present application Figure 6 Structure diagram of the pressure maintaining mechanism of the sheet metal part machining and forming equipment of one embodiment of the present application Figure 2 ; Figure 7 Structure diagram of the pressure maintaining mechanism of the sheet metal part machining and forming equipment of one embodiment of the present application

[0017] As shown in the figure: 1, processing table; 2, rotating arm; 3, upper die; 4, side punch protrusion die; 5, pressure maintaining mechanism; 6, hydraulic cylinder; 7, lifting plate; 8, rotary table; 9, positioning assembly; 10, linear drive mechanism; 11, toothed plate; 12, second groove; 13, locking plate; 14, electric push rod; 15, push plate; 21, first groove; 22, clamping groove; 51, transmission assembly; 52, pressing assembly; 511, gear; 512, screw rod; 513, nut block; 514, connecting plate; 521, support plate; 522, first spring; 523, pressing plate; 91, mounting frame; 92, second spring; 93, positioning plate. DETAILED DESCRIPTION

[0018] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0019] The sheet metal part processing and forming equipment of the embodiments of the present application is described below in conjunction with the accompanying drawings.

[0020] As Figures 1 to 6 shown, the sheet metal part processing and forming equipment of the embodiments of the present application can include a processing table 1, a plurality of rotating arms 2, a plurality of upper dies 3, two side punch protrusion dies 4 and a plurality of pressure maintaining mechanisms 5.

[0021] Among them, the side wall of the processing table 1 is provided with a hydraulic cylinder 6, the end of the hydraulic cylinder 6 is provided with a lifting plate 7, and the side wall of the lifting plate 7 is rotationally connected with a rotary table 8.

[0022] It should be noted that the rotary table 8 is rotationally arranged on the lifting plate 7 through a support shaft, and the support shaft is connected with an external driving motor. The driving motor can drive the rotary table 8 to rotate intermittently, and the intermittent stop time and the rotation angle are both set by the controller. Among them, the stop time can be adjusted according to the forming needs of the T-shaped sheet metal part, and the rotation angle depends on the number of rotating arms 2. For example, the present application has four rotating arms 2, so the controller sets the rotation angle of the rotary table 8 to 90 degrees each time.

[0023] Further, the hydraulic cylinder 6 can lift the entire rotary table 8 and rotating arms 2, and can avoid motion interference with the processing table 1 during the rotation of the rotating arms 2.

[0024] The plurality of rotating arms 2 are evenly distributed on the rotary table 8, and the plurality of upper dies 3 are respectively arranged at the ends of the corresponding rotating arms 2. The processing table 1 is embedded with a lower die matching the upper die 3.

[0025] It should be noted that the upper die 3 described in this embodiment is detachably arranged at the end of the rotating arm 2, and by driving the rotating arm 2 to rotate, the upper die 3 can be driven to rotate, when the upper die 3 rotates to the lowest position, the rotating arm 2, the rotating arm 2 and the upper die 3 are driven to move downward by the hydraulic cylinder 6, so as to vertically stamp the rectangular plate.

[0026] Further, referring to Figure 3 , the lower die is provided with a die cavity, and when the upper die 3 is closed with the lower die, the rectangular plate is deformed under the pressure of the upper die 3, fills the die cavity of the lower die, and is finally processed into a U-shaped plate structure.

[0027] The processing table 1 is symmetrically provided with two groups of linear drive mechanisms 10, and the two side punch protrusion dies 4 are respectively connected with the corresponding linear drive mechanisms 10, and the two opposite side walls of each side punch protrusion die 4 are respectively provided with a tooth plate 11.

[0028] It should be noted that the two groups of linear drive mechanisms 10 are symmetrically arranged on both sides of the lower die, and each two linear drive mechanisms 10 form a group, so as to stably support the side punch protrusion die 4, and the linear drive mechanism 10 can be a sliding table module, and the side punch protrusion die 4 is arranged on the sliding table of the sliding table module. When working, the linear drive mechanisms 10 on both sides synchronously drive the two side punch protrusion dies 4 to move towards each other, so as to simultaneously stamp the two side plates of the U-shaped plate, and this process cooperates with the movement of the upper die 3, so as to finally form a T-shaped plate.

[0029] It should be explained that the plate material experiences severe plastic deformation and accumulates internal stress during the stamping process, and when the constraint of the side punch protrusion die 4 is released, the material elastic effect promotes it to try to restore to the original state. Because the end of the T-shaped part is the weakest constraint, it becomes a deformation concentration area, which causes the end to easily expand outward.

[0030] The two opposite side walls of each rotating arm 2 are respectively provided with a pressure maintaining mechanism 5, and the pressure maintaining mechanism 5 is intermittently engaged with the tooth plate 11, wherein the pressure maintaining mechanism 5 is used for pressure maintaining treatment on the end of the T-shaped part.

[0031] It should be noted that two pressure maintaining mechanisms 5 are matched on each rotating arm 2, and when the rotating arm 2 is located directly below the rotating table 8, the pressure maintaining mechanism 5 is connected with the tooth plate 11, and when the tooth plate 11 moves in the direction of approaching the rotating arm 2 along with the side punch protrusion die 4, the tooth plate 11 and the transmission assembly 51 are matched to drive the abutting assembly 52 to move upward, and when the side punch protrusion die 4 extrudes and deforms the side plate of the U-shaped plate, it does not interfere with the movement of the side punch protrusion die 4, and finally forms a T-shaped part. On the contrary, when the side punch protrusion die 4 resets (moves away from the rotating arm 2), the tooth plate 11 and the transmission assembly 51 are matched again to drive the abutting assembly 52 to move downward, and the abutting assembly 52 is used for abutting the end of the T-shaped part to suppress the springback, thereby improving the processing precision of the T-shaped part.

[0032] For further clarity of the above embodiments, in an embodiment of the present application, as shown in Figure 4 and Figure 5 The pressure maintaining mechanism 5 comprises two symmetrically arranged transmission assemblies 51 and a pressing assembly 52, wherein the side wall of the rotating arm 2 is symmetrically provided with two first grooves 21, the two transmission assemblies 51 are arranged in the corresponding first grooves 21 respectively, and the pressing assembly 52 is arranged between the two transmission assemblies 51 and connected with the transmission assemblies 51 respectively.

[0033] In the embodiment of the present application, when the toothed plate 11 moves towards the rotating arm 2, the end thereof is inserted into the first groove 21 and drives the transmission assembly 51 to rotate, thereby driving the pressing assembly 52 to move upwards to avoid interference with the stamping operation of the opposite side punch 4. Conversely, when the toothed plate 11 moves away from the rotating arm 2, the pressing assembly 52 is driven to move downwards under the cooperation of the transmission assembly 51, and the end of the T-shaped piece is pressed by the pressing assembly 52 to suppress the springback thereof.

[0034] Further, as shown in Figure 4 The transmission assembly 51 comprises a gear 511, a lead screw 512, a nut block 513 and a connecting plate 514, wherein the lead screw 512 is rotationally arranged in the first groove 21, the gear 511 is arranged on the lead screw 512 and has a meshing relationship with the toothed plate 11, the nut block 513 is threadedly connected with the lead screw 512, and the connecting plate 514 is connected with the nut block 513.

[0035] It should be noted that the nut block 513 is slidingly arranged in the first groove 21, and the movement direction of the nut block 513 can be guided by the first groove 21 to ensure the linear movement of the nut block 513.

[0036] Specifically, after the lead screw 512 rotates, the nut block 513 is driven to move upwards or downwards along the axis direction of the lead screw 512, and the pressure maintaining mechanism 5 is driven to move upwards or downwards through the connecting action of the connecting plate 514.

[0037] In an embodiment of the present application, as shown in Figure 5 The pressing assembly 52 comprises a support plate 521, a plurality of first springs 522 and a pressing plate 523, wherein the support plate 521 is connected with the connecting plate 514, the plurality of first springs 522 are uniformly distributed on the side of the support plate 521 close to the rotating arm 2, the pressing plate 523 is connected with the first springs 522, and the end of the pressing plate 523 close to the upper die 3 is an arc-shaped plate.

[0038] It should be noted that when the first spring 522 is in a natural state, the distance between the pressing plate 523 and the rotating arm 2 is smaller than the thickness of the plate, the pressing plate 523 includes an arc-shaped section and a straight section, wherein the straight section is parallel to the supporting plate 521, and the arc-shaped section expands outward, so that the distance between the arc-shaped section and the rotating arm 2 is greater than the distance between the straight section and the rotating arm 2, and the arc-shaped structure helps the pressing plate 523 to move more smoothly and be positioned at the end of the T-shaped piece.

[0039] Specifically, when the side-punching die 4 moves towards the upper die 3, the toothed plate 11 is driven to move, the toothed plate 11 is engaged with the gear 511, and the gear 511 and the lead screw 512 are driven to rotate in a first direction, at this time, the nut sliding block 513 drives the pressing assembly 52 to move upward, so as not to interfere with the stamping action of the side-punching die 4, and finally a T-shaped piece is formed.

[0040] When the side-punching die 4 completes stamping, the linear driving mechanism 10 drives the side-punching die 4 to reset, and through the engagement relationship between the toothed plate 11 and the gear 511, the lead screw 512 is driven to rotate in a second direction, and then the nut sliding block 513 drives the pressing assembly 52 to move downward, because the end of the T-shaped piece is elastically deformed, the arc-shaped section of the pressing plate 523 first contacts the end of the T-shaped piece, and in the process of continuously moving downward of the pressing plate 523, the first spring 522 is extruded to deform, so that the straight section of the pressing plate 523 is tightly attached to the end of the T-shaped piece, and a certain pressure is applied to the elastically deformed end to suppress the rebound, and it can be understood that the rotating directions of the first direction and the second direction are opposite, if the first direction is counterclockwise rotation, then the second direction is clockwise rotation.

[0041] When the toothed plate 11 and the gear 511 are separated, the pressing plate 523 is tightly attached to the T-shaped piece, the hydraulic cylinder 6 drives the rotating table 8 and the rotating arm 2 to move upward, then the rotating table 8 is controlled to rotate, the rotating arm 2 drives the T-shaped piece to rotate by 90 degrees, in the process of rotating, the other upper die 3 will rotate to the vertical direction stamping area (i.e. above the lower die), at the same time, the plate to be stamped is placed on the machining table 1 again, the hydraulic cylinder 6 is controlled to start again, the hydraulic cylinder 6 drives the rotating table 8, the rotating arm 2 and the upper die 3 to move downward, so as to stamp the plate in the vertical direction, and then stamp the plate in the horizontal direction.

[0042] In an embodiment of the present application, as shown in Figure 3 two positioning assemblies 9 are symmetrically arranged on the machining table 1, the positioning assembly 9 includes a mounting frame 91, a second spring 92 and a positioning plate 93, wherein the machining table 1 is provided with a second groove 12, the mounting frame 91 is arranged in the second groove 12, the second spring 92 is arranged in the mounting frame 91, the positioning plate 93 is connected to the top of the second spring 92, and the side of the positioning plate 93 away from the lower die is inclined.

[0043] It should be noted that the mounting frame 91 is a U-shaped frame, and the mounting frame 91 can be fixed in the second groove 12 by bolts, so as to facilitate the replacement of the position of the positioning assembly 9.

[0044] Further, the positioning plate 93 is in sliding connection with the U-shaped frame, one end of the positioning plate 93 extends above the second groove 12 when the second spring 92 is in a natural state, and the two positioning assemblies 9 are located between the two side punching dies 4 after the two side punching dies 4 are reset (the two side punching dies 4 are away from each other and are arranged near the two ends of the machining table 1).

[0045] In the embodiment of the present application, referring to Figure 7 , the opposite surfaces of the two positioning plates 93 are inclined surfaces, and the lowest end of the inclined surface is flush with the upper surface of the machining table 1 when the second spring 92 is in a natural state.

[0046] Specifically, the relevant personnel place the rectangular plate between the two positioning plates 93, and position the rectangular plate through the positioning plate 93. When the side punching die 4 performs horizontal stamping, the side punching die 4 applies a lateral force to the positioning plate 93, and the force is converted into downward movement through the inclined surface of the positioning plate 93, so as to compress the second spring 92 to deform, and make the positioning plate 93 retract into the mounting frame 91. After the side punching die 4 is reset, the second spring 92 that is compressed releases the elastic force, and drives the positioning plate 93 to automatically reset.

[0047] In one embodiment of the present application, as shown in Figure 5 , the support plate 521 is rotatably provided with a locking plate 13, and the side wall of the rotating arm 2 is provided with a clamping groove 22 corresponding to the locking plate 13.

[0048] In the embodiment of the present application, the locking plate 13 can be rotatably connected with the support plate 521 through a damping shaft, before the rotating arm 2 drives the rotary table 8 and the upper die 3 to rotate, the locking plate 13 can be rotated, one end of the locking plate 13 is rotated into the clamping groove 22, so as to lock the T-shaped piece, and prevent the T-shaped piece from being separated from the upper die 3.

[0049] Further, as shown in Figure 6 , the lifting plate 7 is provided with an electric push rod 14, and the output end of the electric push rod 14 is provided with a push plate 15.

[0050] In the embodiment of the present application, the electric push rod 14 drives the push plate 15 to move, and separates the formed T-shaped piece from the upper die 3 by using the push plate 15, so as to realize the function of discharging.

[0051] Specifically, the skilled in the art places the rectangular plate to be processed between the two positioning plates 93, and then the hydraulic cylinder 6 drives the rotating table 8, the rotating arm 2 and the upper die 3 to move downward, and the upper die 3 vertically punches the plate to form a U-shaped plate. Then, the linear driving mechanism 10 drives the two side punch dies 4 to move towards each other to horizontally punch the U-shaped plate, and finally forms a T-shaped piece.

[0052] In this process, when the side punch die 4 moves to the center of the processing table 1, the toothed plate 11 cooperates with the transmission assembly 51 to drive the pressing assembly 52 to move upward, and conversely, when it moves outward, it drives the pressing assembly 52 to move downward, so that the pressing assembly 52 is pressed on the end of the T-shaped piece, which plays a pressure-keeping role and helps to suppress the elastic deformation of the workpiece and improve the forming accuracy.

[0053] Then, the rotating table 8 rotates the rotating arm 2 by 90 degrees, so that the other upper die 3 is above the lower die, and the above processing procedure is repeated. Thus, the continuous processing of the T-shaped piece can be realized without waiting, which significantly improves the production efficiency, and the pressure-keeping role of the pressing assembly 52 further guarantees the processing quality of the workpiece.

[0054] In summary, the sheet metal part processing and forming equipment of the embodiment of the present application uses the reset movement of the side punch die to drive the pressure-keeping mechanism to press the end of the formed T-shaped piece, effectively suppresses the springback and improves the accuracy of the workpiece. At the same time, it also supports continuous processing, which significantly shortens the single-piece forming time and improves the processing efficiency.

[0055] In the description of the present specification, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0056] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

Claims

1. A sheet metal processing and forming equipment, characterized in that: It includes a processing table, multiple rotating arms, multiple upper molds, two side punches and multiple pressure holding mechanisms, among which: 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 rotatably connected to a turntable; The plurality of rotating arms are evenly distributed on the turntable, and the plurality of upper molds are respectively arranged at the ends of the corresponding rotating arms; A lower die matching the upper die 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, and tooth plates are respectively arranged on the two opposite side walls of each side punch; The two opposite side walls of each rotating arm are respectively provided with the pressure-maintaining mechanism, and the pressure-maintaining mechanism intermittently engages with the tooth plate, wherein the pressure-maintaining mechanism is used to perform pressure-maintaining treatment on the end of the T-piece.

2. The sheet metal processing and forming equipment according to claim 1, characterized in that: The pressure-maintaining mechanism includes two symmetrically arranged transmission components and a pressing component, wherein: The side wall of the rotating arm is symmetrically provided with two first grooves, and the two transmission assemblies are respectively arranged in the corresponding first grooves; The pressing assembly is arranged between the two transmission assemblies and is connected to the transmission assemblies respectively.

3. The sheet metal processing and forming equipment according to claim 2, characterized in that: The transmission assembly includes a gear, a screw rod, a nut slider and a connecting plate, wherein: The screw rod is rotatably disposed in the first groove; The gear is arranged on the screw rod and has a meshing relationship with the tooth plate; The nut slider is threadedly connected to the screw rod; 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 pressing assembly includes a support plate, a plurality of first springs and a pressing plate, wherein: The support plate is connected to the connecting plate; A plurality of the first springs are evenly distributed on a side of the support plate adjacent to the rotating arm; The pressing plate is connected to the first spring, and one end of the pressing plate adjacent to the upper die is an arc-shaped plate.

5. The sheet metal forming equipment according to claim 1, characterized in that: Two positioning assemblies are symmetrically arranged on the processing table, and the positioning assemblies include a mounting frame, a second spring and a positioning plate, wherein: The processing table is provided with a second groove, and the mounting bracket is arranged 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 a side of the positioning plate facing away from the lower mold is an inclined surface.

6. The sheet metal 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 forming equipment according to claim 1, characterized in that: An electric push rod is provided on the lifting plate, and a push plate is provided at the output end of the electric push rod.

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