Guiding type metal support automatic stripping device

Abstract

The invention relates to the technical field of metal stamping machining, and discloses a guiding type metal support automatic stripping device which comprises a rack, a lower die holder and a servo stamping mechanism are arranged on the rack, and the servo stamping mechanism is connected with an upper die holder; a feeding channel is formed in the lower die base, a plurality of blanking cutters are sequentially installed on the bottom face of the upper die base in the feeding direction and can act on an auxiliary material belt in sequence in the one-time punching stroke, at least one blanking cutter has the composite function, a connecting rib at one end of a metal support is punched and broken firstly, then the broken side is bent, and therefore the metal support is cut off. According to the design, traditional one-time shearing is converted into a flexible stripping process of breaking, bending and then breaking, impact load and stress concentration are effectively reduced, support deformation and blanking interference are avoided, it is guaranteed that the stripping process is stable and reliable, the product yield is remarkably increased, and the service life of the die is remarkably prolonged.

Description

Technical Field

[0001] This invention relates to the field of metal stamping technology, specifically to a guided automatic unloading device for metal supports. Background Technology

[0002] In the automated production of circuit breaker thermal components, metal brackets are usually made of steel and formed by continuous stamping using multi-station progressive dies. Due to their complex structure, high dimensional accuracy requirements, and the need to ensure good electrical contact performance and mechanical strength, these brackets are still connected by continuous auxiliary strips after stamping. They must be separated through a stripping process before they can enter the subsequent assembly stage.

[0003] Currently, the industry generally uses direct shearing for stripping, which involves cutting the connecting rib between the bracket and the strip at once using upper and lower cutting edges. However, when this method is applied to precision metal brackets, the metal bracket is bent a long distance in the lower die channel, and the connecting rib will interfere with the metal bracket inside the lower die after being directly punched off.

[0004] To alleviate the above problems, some companies have tried to introduce a "bending before cutting" process, which involves pre-bending the connecting ribs to weaken their cross-sectional strength and release stress before final cutting. However, existing devices for implementing this process mostly rely on complex sliders, wedges, or additional drive mechanisms integrated inside the mold. These devices are compact but difficult to maintain, lack flexibility, and are difficult to adapt to rapid switching between different support structures. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a guided automatic unloading device for metal supports.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic unloading device for guided metal supports is installed on a workbench for separating metal supports from a continuous auxiliary strip. The device includes a frame, on which a lower die base and a servo stamping mechanism are fixedly mounted. An upper die base is fixedly connected to the output end of the servo stamping mechanism. The lower die base has a feeding channel. Multiple cutting blades are sequentially mounted on the bottom surface of the upper die base along the feeding direction. These cutting blades are configured to act sequentially on the auxiliary strip in one stamping stroke. A guiding mechanism is also provided on one side of the lower die base for pulling the continuous auxiliary strip. At least one of the cutting blades has a combined function, configured to first cut off the connecting rib at one end of the auxiliary strip, and then apply a bending action to the cut side.

[0007] To simplify the structure and ensure the synchronization and reliability of the punching and bending actions, preferably, the punching knife with multiple functions is a one-piece molded structure, with a punching cutting edge on one side of its lower end and a bending surface on the other side.

[0008] To avoid interference between the upper and lower dies during bending and to provide sufficient space for strip deformation, preferably, the lower die base is provided with clearance grooves corresponding to the positions of each punching cutter, and the depth of the clearance grooves matches the bending displacement of the auxiliary strip.

[0009] To achieve stable clamping and precise step feeding of the continuous auxiliary material strip, and to prevent feeding deviation or slippage, preferably, the guiding mechanism includes a base. Support plates and a cylinder are respectively provided at both ends of the upper surface of the base. The output end of the cylinder is connected to a receiving plate. The support plate and the receiving plate are located on the same horizontal plane. Clamping parts for clamping the auxiliary material strip are installed on both the support plate and the receiving plate. The clamping part includes a frame. A cylinder is fixedly installed on the frame. A first pressure block is fixedly installed on the movable end of the cylinder. A second pressure block is fixedly installed on the inner bottom surface of the frame. A clamping gap adapted to the thickness of the auxiliary material strip is formed between the first pressure block and the second pressure block.

[0010] In order to effectively guide the auxiliary strip even when it is not clamped and prevent it from jumping or twisting under the impact of punching, guide plates are further installed on the bottom surfaces of the frames on both sides of the second pressure block. Each guide plate includes a plate body with a material passage extending along the feeding direction in the middle of the plate body. A pair of pressure plates are detachably installed on the plate body by bolts and are symmetrically arranged on both sides of the material passage to limit the auxiliary strip passing through the material passage.

[0011] To achieve automatic cutting and centralized recycling of waste strips, reduce manual intervention, and improve the cleanliness of the production line, a waste recycling station is further provided downstream of the guiding mechanism, specifically including a waste rack and a discharge box. A cylinder three is fixedly installed on the waste rack, and the movable end of the cylinder three passes through the waste rack and is fixedly installed with a cutter. A corresponding cutting groove is opened on the waste rack, and a guide plate is bolted to the waste rack below the cutting groove. The guide plate extends into the discharge box.

[0012] To automatically transfer the stripped metal brackets to the downstream workbench and achieve fully unmanned operation, preferably, a feeding assembly is provided between the frame and the guiding mechanism. The feeding assembly includes a guide rail and a crossbeam. A second robotic arm is slidably mounted on the guide rail, and a picking mechanism is fixedly mounted on the crossbeam. A third robotic arm is fixedly mounted on the picking mechanism for gripping the metal brackets transferred by the second robotic arm and feeding them onto the workbench. The picking mechanism includes a function plate and a motor. The function plate has a linear track groove and an inverted U-shaped groove. A first slider is slidably mounted in the linear track groove, and a second slider is slidably mounted in the inverted U-shaped groove. A guide rod is fixedly mounted on the second slider and cooperates with the first slider. The third robotic arm is fixed to the guide rod. The motor is fixedly mounted on the function plate, and the motor output end passes through the function plate and is fixedly mounted on a swing arm. The second slider is cooperates with the swing arm.

[0013] To provide stable support and precise positioning during the handover of the metal support, and to prevent the robotic arm from wobbling and falling or becoming misaligned, preferably, a connecting part is fixedly installed on the side of the frame near the second robotic arm. The connecting part includes a mounting frame, on which a cylinder four is fixedly installed. The movable end of the cylinder four passes through the mounting frame and is fixedly connected to a mounting plate. A cylinder five is fixedly installed on the mounting plate, and a connecting plate is fixedly installed at the output end of the cylinder five. A first robotic arm is installed on the connecting plate, and a protective plate is also fixedly installed on the mounting plate. The protective plate is located outside the connecting plate, and a limit groove is formed on the protective plate. A limit pin is correspondingly fixedly provided on the connecting plate, and the limit pin slides within the limit groove.

[0014] To buffer motion impact, eliminate transmission backlash, and improve repeatability, the mounting plate and mounting bracket are provided with mounting holes on their opposite surfaces, and springs are fixedly connected between the mounting holes.

[0015] The beneficial effects of this invention are: 1. This invention arranges multiple blanking blades sequentially along the feeding direction on the bottom surface of the upper die base, and makes at least one of the blanking blades have a compound function. That is, in the same stamping stroke, the connecting rib at one end of the metal bracket is first cut off by the blanking blade, and then the adjacent bending surfaces apply a controllable bending action to the cut side, causing the bracket to deflect locally. This transforms the traditional one-time shearing into a flexible stripping process of step-by-step stress release and secondary cutting, reducing the impact load and shear stress concentration at the moment of blanking, and avoiding the risk of interference from the lower die blanking, ensuring a stable and reliable stamping process.

[0016] 2. After the punching and separation is completed by the guided metal support automatic unloading device, the continuous auxiliary strip with the metal support removed continues to be conveyed forward by the guide mechanism, enters the waste recycling station, and passes through the cutting groove area on the waste rack. When the waste strip accumulates to a preset length, such as corresponding to a certain number of product pitches, the control system triggers the third cylinder to act. The third cylinder drives the cutter to descend rapidly, cooperates with the edge of the cutting groove, and cuts the waste strip into fixed-length waste segments. This cutting action is synchronized with the main punching cycle or executed according to the counting cycle to ensure that the waste length is consistent, which is convenient for subsequent processing or recycling. The cut waste segments fall below the cutting groove under the action of gravity and slide into the dropping box along the inclined guide plate. The dropping box can be removed and emptied periodically to realize the centralized management and recycling of waste. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connecting part structure of the present invention; Figure 3 for Figure 2 Second perspective; Figure 4 This is a plan view of the lower mold base of the present invention; Figure 5 This is a plan view of the stamping process of the present invention; Figure 6 This is a schematic diagram of the guiding mechanism structure of the present invention; Figure 7 This is a schematic diagram of the picking mechanism structure of the present invention; Figure 8 This is a schematic diagram of the waste recycling station structure of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: 10. Frame; 11. Connecting part; 111. Mounting bracket; 112. Cylinder four; 113. Mounting plate; 114. Cylinder five; 115. Connecting plate; 116. First robotic arm; 117. Guard plate; 101. Limiting groove; 102. Limiting pin; 103. Mounting hole; 104. Spring; 20. Lower mold base; 21. Feeding channel; 22. Clearance groove; 30. Servo stamping mechanism; 40. Upper mold base; 41. Cutting die; 50. Guiding mechanism; 51. Base; 52. Support plate; 53. Cylinder 1; 54. Receiving plate; 55. Clamping part; 551. Frame; 552. Cylinder 2; 553. First pressing block; 554. Second pressing block; 56. Guide plate; 561. Plate body; 562. Pressing plate; 501. Material passage; 60. Scrap material recycling station; 61. Scrap material rack; 62. Material drop box; 63. Cylinder 3; 64. Cutter; 601. Groove; 65. Guide plate; 70. Feeding assembly; 71. Guide rail; 72. Crossbeam frame; 73. Second robot arm; 74. Picking mechanism; 741. Functional board; 742. Motor; 701. Linear track groove; 702. Inverted U-shaped groove; 743. First slider; 744. Second slider; 745. Guide rod; 746. Swing arm; 75. Third robot arm. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not 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. Example 1

[0021] like Figure 1 - Figure 8 As shown, the present invention relates to a guided automatic unloading device for metal supports, which is installed on the workbench of a circuit breaker production line and is used to separate metal supports from a continuous auxiliary material strip.

[0022] The system includes a frame 10, which is fixedly mounted on a worktable. A lower die holder 20 and a servo stamping mechanism 30 are fixedly mounted on the frame 10. The output end of the servo stamping mechanism 30 is fixedly connected to an upper die holder 40. The servo stamping mechanism 30 is preferably a high-precision electric servo press, capable of precise control of stamping stroke, speed, and pressure. The lower die holder 20 has a through-type feeding channel 21 for guiding a continuous auxiliary material strip horizontally. The auxiliary material strip is fed out by the preceding progressive die, and multiple pre-formed metal supports are arranged at equal intervals on it. Each metal support is connected to the auxiliary material strip through three riveting points.

[0023] Multiple cutting blades 41 are sequentially mounted on the bottom surface of the upper die holder 40 along the feeding direction. The multiple cutting blades 41 are configured to act on the auxiliary strip in sequence during one stamping stroke. In this embodiment, there are three cutting blades 41, namely the first cutting blade 41, the second cutting blade 41 and the third cutting blade 41. A guide mechanism 50 is also provided on one side of the lower die holder 20 for pulling the continuous auxiliary strip to move. At least one cutting blade 41 has a compound function and is configured to first cut off the connecting rib at one end of the auxiliary strip, and then apply a bending action to the broken side. The continuous auxiliary strip is fed into the feeding channel 21 of this device through the previous process. The guiding mechanism 50 clamps the strip and, after the servo stamping mechanism 30 completes the previous stroke, drives the strip forward by one pitch, so that the metal bracket to be separated is precisely aligned with the punching area. The servo stamping mechanism 30 starts to move downward, driving the upper die base 40 to move down synchronously. Multiple punching cutters 41 act on the strip in sequence. The first punching cutter 41 first cuts off the connecting rib between the metal bracket and the auxiliary strip at a certain rivet point. Then, the punching cutter 41 applies a bending action to the broken side to avoid interference with the metal bracket inside the die during subsequent punching. Then, it cuts off the remaining connecting part at the rivet point after bending. The connecting rib waste generated by punching falls into the waste cavity inside the lower die base 20. Two sets of third punching cutters 41 are set to cut off the remaining two rivets, completing the complete separation of the metal bracket and the auxiliary strip.

[0024] After stamping is completed, the upper die holder 40 rises with the return stroke of the servo stamping mechanism 30, while the scrap strip is continued to be conveyed forward and recycled by the guide mechanism 50.

[0025] Reference Figure 5 The multi-functional punching cutter 41 is an integrally formed structure. One side of its lower end is provided with a punching blade for cutting the connecting rib between the metal bracket and the auxiliary strip. The other side is provided with a bending surface. This curved surface is a smoothly transitioned arc surface with a polished surface. The punching blade and the bending surface share the same base of the cutter body. In one punching stroke, it can continuously complete the composite action of "cutting first and then bending" without the need for an additional drive mechanism. The structure is compact and the action synchronization is high.

[0026] Correspondingly, the lower die base 20 is provided with a relief groove 22 corresponding to the position of each punching cutter 41. The depth of the relief groove 22 is matched with the bending displacement of the auxiliary strip. The relief groove 22 is a groove extending perpendicular to the feeding direction. Its width is slightly larger than the width of the auxiliary strip, and its depth is precisely set according to the maximum vertical displacement of the metal bracket during the bending process.

[0027] Reference Figure 1 and Figure 6The guiding mechanism 50 is used to clamp, step, and guide the continuous auxiliary strip during the stripping process, ensuring its precise positioning at the punching station. Specifically, it includes a base 51 mounted on the workbench. Support plates 52 and cylinder 53 are respectively provided at both ends of the upper surface of the base 51. The output end of cylinder 53 is connected to a receiving plate 54. The support plates 52 and the receiving plate 54 are located on the same horizontal plane. Clamping parts 55 for clamping the auxiliary strip are installed on both the support plates 52 and the receiving plate 54. The clamping part 55 includes a frame 551, on which cylinder 552 is fixedly mounted. A first pressure block 553 is fixedly mounted on the movable end of cylinder 552. A second pressure block 554 is fixedly mounted on the inner bottom surface of the frame 551. A clamping gap adapted to the thickness of the auxiliary strip is formed between the first pressure block 553 and the second pressure block 554. Preferably, the inner side of the pressure plate 562 is provided with a wear-resistant lining to reduce frictional damage to the strip surface. Furthermore, guide plates 56 are respectively installed on the bottom surface of the frame 551 on both sides of the second pressure block 554. The guide plate 56 includes a plate body 561. A material passage 501 extending along the feeding direction is opened in the middle of the plate body 561. The width of the material passage 501 is slightly larger than the width of the auxiliary material strip, and the height is slightly larger than the thickness of the material strip to ensure that the material strip passes through smoothly. A pair of pressure plates 562 are detachably installed on the plate body 561 by bolts and are symmetrically arranged on both sides of the material passage 501 to limit the auxiliary material strip passing through the material passage 501 and prevent it from jumping, warping or deviating under high-speed feeding or punching impact.

[0028] When the continuous auxiliary strip enters the material passage 501 and reaches the predetermined position, cylinder 2 552 is activated, driving the first pressure block 553 to move downwards and cooperate with the fixed second pressure block 554 to clamp the auxiliary strip in the clamping gap between them. At this time, the clamping part 55 on the support plate 52 is in the open state. After the servo stamping mechanism 30 completes the previous stroke and returns to the high position, cylinder 1 53 is activated, pushing the receiving plate 54 and its clamping part 55 to move one station pitch away from the support plate 52. Since the strip has been clamped at both ends, this movement drives the entire auxiliary strip to move forward precisely, so that the next metal bracket to be unloaded is accurately aligned with the punching area below the upper die base 40. After the stepping is in place, cylinder 2 552 retracts and releases the strip. At this time, the clamping part 55 on the support plate 52 is in the closed state, always limiting the position of the strip.

[0029] Reference Figure 1 and Figure 8Downstream of the guiding mechanism 50 is a waste recycling station 60, used to cut, guide, and collect the auxiliary material strip waste generated after punching and separation. Specifically, it includes a waste rack 61 and a drop box 62. The waste rack 61 is located at the discharge end of the guiding mechanism 50 and is used to receive the continuous waste strip sent from the descraping device. A cylinder 63 is fixedly installed on the waste rack 61. The movable end of the cylinder 63 passes through the waste rack 61 and is fixedly installed with a cutter 64. Correspondingly, a cutting groove 601 is opened on the waste rack 61. The cutting groove 601 is a through opening with a width slightly larger than the width of the auxiliary material strip, used to provide downward space for the cutter 64 and cooperate with it to complete the shearing action. A guide plate 65 is bolted to the waste rack 61 below the cutting groove 601. The guide plate 65 is set at an inclination and extends into the drop box 62. The drop box 62 is an open container placed on one side of the bottom of the waste rack 61, used to collect the cut waste segments.

[0030] Preferably, the cutting edge of the cutter 64 is hardened to form a precision shearing pair with the edge of the cutting groove 601; the surface of the guide plate 65 is smooth or covered with a wear-resistant coating to reduce the resistance of waste material sliding and prevent jamming.

[0031] After the punching and separation are completed by the guided metal support automatic unloading device, the continuous auxiliary strip with the metal support removed continues to be conveyed forward by the guide mechanism 50, enters the waste recycling station 60, and passes through the cutting groove 601 area on the waste rack 61. When the waste strip accumulates to a preset length, for example, corresponding to a certain number of product pitches, the control system triggers the cylinder 63 to act. The cylinder 63 drives the cutter 64 to descend rapidly, cooperating with the edge of the cutting groove 601 to cut the waste strip into fixed-length waste segments. This cutting action is similar to... The main stamping cycle is synchronized or executed according to the counting cycle to ensure that the length of the scrap is consistent, which facilitates subsequent processing or recycling. The cut scrap section falls into the cutting groove 601 under the action of gravity and slides into the dropping box 62 along the inclined guide plate 65. The dropping box 62 can be removed and emptied periodically to realize the centralized management and recycling of scrap. After the cutting is completed, the cylinder 63 drives the cutter 64 to return to the initial position and wait for the next cutting command. During this period, the guide mechanism 50 continues to convey the scrap belt to prepare for the next cycle. Example 2

[0032] Reference Figure 1 and Figure 7 A feeding assembly 70 is provided between the frame 10 and the guide mechanism 50, which is used to automatically transfer the unloaded metal bracket and accurately place it on the assembly station of the subsequent process.

[0033] The feeding assembly 70 includes a guide rail 71 and a crossbeam frame 72. A second robotic arm 73 is slidably mounted on the guide rail 71, and a picking mechanism 74 is fixedly mounted on the crossbeam frame 72. A third robotic arm 75 is fixedly mounted on the picking mechanism 74 for gripping the metal bracket transferred from the second robotic arm 73 and feeding it onto the worktable. The picking mechanism 74 includes a function plate 741 and a motor 742. The function plate 741 has a linear track groove 701 and an inverted U-shaped groove 702. A first slider 743 is slidably mounted in the linear track groove 701. A second slider 744 is slidably installed inside the inverted U-shaped groove 702. A guide rod 745 is fixedly installed on the second slider 744 and is fitted onto the first slider 743. A third robotic arm 75 is fixed to the guide rod 745. A motor 742 is fixedly installed on the function plate 741. The output end of the motor 742 passes through the function plate 741 and is fixedly installed with a swing arm 746. The second slider 744 is fitted into the swing arm 746, so that when the motor 742 rotates, the swing arm 746 drives the second slider 744 to slide along the inverted U-shaped groove 702.

[0034] The second robotic arm 73 moves along the guide rail 71 to below the unloading station, grips the metal bracket delivered from the previous station, and then returns to the preset handover point directly below the crossbeam frame 72, waiting for the pickup mechanism 74 to activate. The motor 742 starts, driving the swing arm 746 to rotate. Since the swing arm 746 is connected to the second slider 744, the second slider 744 is forced to slide downwards along the vertical section of one side of the inverted U-shaped groove 702. Simultaneously, the guide rod 745 drives the first slider 743 to move laterally along the straight track groove 701, causing the third robotic arm 75 to descend to the handover position and clamp the metal bracket. Motor 742 rotates in the opposite direction, and swing arm 746 pushes second slider 744 into the top horizontal section of inverted U-shaped groove 702. At this time, guide rod 745 drives third robot arm 75 to move horizontally to directly above the target worktable. Subsequently, motor 742 drives swing arm 746 into the right vertical section, and second slider 744 moves downward along inverted U-shaped groove 702. Third robot arm 75 descends accordingly and accurately places the metal bracket on the worktable. After placement, third robot arm 75 is released, and motor 742 rotates in the opposite direction, causing each component to return to its initial position along the original path, ready for the next cycle. Example 3

[0035] Reference Figure 1 and Figure 2 and Figure 3 A connecting part 11 is fixedly installed on the side of the frame 10 near the second robot arm 73, which is used to transfer the metal bracket between the unloading station and the loading component 70, thereby improving the overall automation cycle time and positioning accuracy.

[0036] The connecting part 11 includes a mounting frame 111, on which a cylinder 112 is fixedly mounted. The movable end of the cylinder 112 passes through the mounting frame 111 and is fixedly connected to a mounting plate 113. Thus, the cylinder 112 can drive the mounting plate 113 to reciprocate horizontally. A cylinder 114 is fixedly mounted on the mounting plate 113, and a connecting plate 115 is fixedly mounted on the output end of the cylinder 114. A first robotic arm 116 is mounted on the connecting plate 115 for gripping the metal bracket separated from the auxiliary material belt and... To ensure the stability and guiding accuracy of the connecting plate 115 during vertical movement, a guard plate 117 is fixedly installed on the mounting plate 113 at the handover position of the second robotic arm 73. The guard plate 117 is located outside the connecting plate 115 and has a limit groove 101. Correspondingly, a limit pin 102 is fixedly provided on the connecting plate 115. The limit pin 102 slides in the limit groove 101, effectively limiting the lateral sway and rotational offset of the connecting plate 115 during movement and improving the clamping repeatability accuracy.

[0037] Furthermore, mounting holes 103 are provided on the opposite surfaces of the mounting plate 113 and the mounting bracket 111. A spring 104 is fixedly connected between the opposite mounting holes 103 to provide a buffering effect when the cylinder 112 returns, and at the same time help to eliminate transmission backlash and improve positioning consistency.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A guided automatic unloading device for metal supports, integrally mounted on a workbench for separating metal supports from a continuous auxiliary material strip, comprising a frame (10), on which a lower die base (20) and a servo stamping mechanism (30) are fixedly mounted, the output end of the servo stamping mechanism (30) being fixedly connected to an upper die base (40), characterized in that, The lower die base (20) is provided with a feeding channel (21). Multiple blanking blades (41) are installed sequentially on the bottom surface of the upper die base (40) along the feeding direction. The multiple blanking blades (41) are configured to act on the auxiliary material strip in sequence during one stamping stroke. A guide mechanism (50) is also provided on one side of the lower die base (20) for pulling the continuous auxiliary material strip to move. At least one of the punching cutters (41) has a combined function and is configured to first punch off the connecting rib at one end of the auxiliary strip and then apply a bending action to the broken side.

2. The automatic unloading device for a guided metal support according to claim 1, characterized in that: The punching knife (41) with multiple functions is an integrally formed structure, with a punching cutting edge on one side of its lower end and a bending surface on the other side.

3. The automatic unloading device for a guided metal support according to claim 1, characterized in that: The lower die base (20) is provided with a relief groove (22) corresponding to the position of each punching cutter (41), and the depth of the relief groove (22) is matched with the bending displacement of the auxiliary strip.

4. The automatic unloading device for a guided metal support according to claim 1, characterized in that: The guiding mechanism (50) includes a base (51), with a support plate (52) and a cylinder (53) respectively provided at both ends of the upper surface of the base (51). The output end of the cylinder (53) is connected to a receiving plate (54). The support plate (52) and the receiving plate (54) are located on the same horizontal plane. Both the support plate (52) and the receiving plate (54) are equipped with clamping parts (55) for clamping auxiliary material strips. The clamping part (55) includes a frame (551), with a cylinder (552) fixedly installed on the frame (551). A first pressure block (553) is fixedly installed on the movable end of the cylinder (552). A second pressure block (554) is fixedly installed on the inner bottom surface of the frame (551). A clamping gap adapted to the thickness of the auxiliary material strip is formed between the first pressure block (553) and the second pressure block (554).

5. The automatic unloading device for a guided metal support according to claim 4, characterized in that: Guide plates (56) are respectively installed on the bottom surface of the frame (551) on both sides of the second pressure block (554). The guide plate (56) includes a plate body (561). A material passage (501) extending along the feeding direction is opened in the middle of the plate body (561). A pair of pressure plates (562) are detachably installed on the plate body (561) by bolts and are symmetrically arranged on both sides of the material passage (501) to limit the auxiliary material strip passing through the material passage (501).

6. The automatic unloading device for a guided metal support according to claim 4, characterized in that: Downstream of the guiding mechanism (50) is a waste recycling station (60), which specifically includes a waste rack (61) and a dropping box (62). A cylinder three (63) is fixedly installed on the waste rack (61). The movable end of the cylinder three (63) passes through the waste rack (61) and is fixedly installed with a cutter (64). A cutting groove (601) is correspondingly opened on the waste rack (61). A guide plate (65) is installed on the waste rack (61) below the cutting groove (601) by bolts. The guide plate (65) extends into the dropping box (62).

7. The automatic unloading device for a guided metal support according to claim 1, characterized in that: A feeding assembly (70) is provided between the frame (10) and the guide mechanism (50). The feeding assembly (70) includes a guide rail (71) and a crossbeam frame (72). A second robot arm (73) is slidably mounted on the guide rail (71). A picking mechanism (74) is fixedly mounted on the crossbeam frame (72). A third robot arm (75) is fixedly mounted on the picking mechanism (74) for gripping the metal bracket transferred by the second robot arm (73) and feeding it onto the worktable. The picking mechanism (74) includes a function plate (741) and a motor (742). The function plate (741) has a linear track groove (701) and an inverted U-shaped groove (702). A first slider (743) is slidably installed in the linear track groove (701), and a second slider (744) is slidably installed in the inverted U-shaped groove (702). A guide rod (745) is fixedly installed on the second slider (744) and is fitted onto the first slider (743). The third manipulator (75) is fixed to the guide rod (745). The motor (742) is fixedly installed on the function plate (741). The output end of the motor (742) passes through the function plate (741) and is fixedly installed with a swing arm (746). The second slider (744) is fitted onto the swing arm (746).

8. The automatic unloading device for a guided metal support according to claim 1, characterized in that: A connecting part (11) is fixedly installed on the side of the frame (10) near the second robot arm (73). The connecting part (11) includes a mounting frame (111). A cylinder four (112) is fixedly installed on the mounting frame (111). The movable end of the cylinder four (112) passes through the mounting frame (111) and is fixedly connected to a mounting plate (113). A cylinder five (114) is fixedly installed on the mounting plate (113). The output end of the cylinder five (114) is fixedly installed on the mounting plate (113). A connecting plate (115) is fixedly installed, and a first robotic arm (116) is installed on the connecting plate (115). A guard plate (117) is also fixedly installed on the mounting plate (113). The guard plate (117) is located outside the connecting plate (115). A limit groove (101) is opened on the guard plate (117). A limit pin (102) is fixedly provided on the connecting plate (115) and the limit pin (102) slides in the limit groove (101).

9. The automatic unloading device for a guided metal support according to claim 8, characterized in that: The mounting plate (113) and the mounting bracket (111) are provided with mounting holes (103) on their opposite sides, and a spring (104) is fixedly connected between the mounting holes (103).

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