Blanking die structure for one-time punching forming of metal plate

Abstract

The invention discloses a blanking die structure for one-time punching forming of a metal plate, which comprises a working table, a blanking die and a blanking die, the lower die is rotationally connected to the lifting base, the lifting base is driven by a driving mechanism in the workbench in a lifting mode, and a first receding opening is formed in the lower die in a penetrating mode; the pressing die is arranged on the workbench, a second receding opening is formed in the pressing die in a penetrating mode, and the lower die and the pressing die clamp and abut against the original plate on the workbench; the upper die is arranged above the blanking groove in a lifting driving mode through first linear driving equipment on the workbench, and a punch at the bottom of the upper die corresponds to the second receding opening and the first receding opening. The problems that an existing metal plate punching forming die is low in punching operation efficiency, complex in structure and high in cost, burrs at the punching position of a lower die and an original plate are not separated after single-time punching, the lower die and the original plate are abraded, and the service life of the die and the conveying efficiency of the original plate are affected can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of molds, in particular to a blanking mold structure for one-step punching and forming of sheet metal. Background Art

[0002] Traditional sheet metal punching process generally requires multiple punching operations on the outer side of the sheet metal on the original plate, such as Figure 1 As shown, after punching, a micro-connection 400 remains between the original sheet 100 and the preliminarily formed sheet metal part 200. This micro-connection 400 then needs to be cut using a tool such as pliers, and the remaining micro-connection points on the side of the sheet metal part 200 need to be removed. This makes the mold structure complex, costly, and the punching operation inefficient. Furthermore, after the blanking die punches, a downward flash is formed at the punched portion of the original sheet metal. The original sheet metal is then directly transported to the punching and forming of the next sheet metal part. This causes the flash embedded in the avoidance opening of the lower die to squeeze and wear against the lower die, affecting the mold life and the conveying efficiency of the original sheet metal. Summary of the Invention

[0003] The purpose of the present invention is to provide a blanking die structure for one-time punching and forming of sheet metal in order to solve the problems of low punching efficiency, complex structure, high cost, and failure to separate the lower die from the punching edge of the original sheet after a single punching, which causes wear between the two and affects the service life of the die and the conveying efficiency of the original sheet.

[0004] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a blanking die structure for punching and forming sheet metal in one step, comprising:

[0005] A workbench with a blanking chute on the top;

[0006] The lower die is rotatably connected to a lifting seat, and the lifting seat is driven up and down by a driving mechanism in the workbench. A first avoidance opening is provided through the lower die;

[0007] A pressing die is arranged on the workbench and has a second avoidance opening therethrough, and the lower die and the pressing die clamp and abut against the original plate on the workbench;

[0008] The upper die is driven to rise and fall by the first linear drive device on the workbench and is arranged above the blanking chute, and the punch at the bottom thereof corresponds to the second avoidance opening and the first avoidance opening.

[0009] As a further description of the above technical solution:

[0010] The rotating shaft on the side of the lower mold is rotatably inserted into the connecting groove of the lifting seat, and the torsion spring is sleeved on the rotating shaft, and the ends of the torsion spring are respectively positioned on the rotating shaft and the connecting groove.

[0011] As a further description of the above technical solution:

[0012] The side of the blanking trough extends into a mounting groove, and the driving mechanism is arranged in the mounting groove, which includes a vertical screw and a horizontal transmission shaft. The vertical screw rotates to connect with the bearing seat in the mounting groove, which is screwed on the screw hole of the lifting seat. The horizontal transmission shaft rotates and passes through the bracket in the mounting groove, and the bevel gear on it engages with the bevel gear on the vertical screw and the bevel gear on the output shaft of the servo motor in the mounting groove respectively.

[0013] As a further description of the above technical solution:

[0014] A drawer opening is arranged on the side of the blanking trough, and the collecting drawer is slidably arranged on the blanking trough and the drawer opening.

[0015] As a further description of the above technical solution:

[0016] The middle portion of the top surface of the material collection drawer is concave to form a concave curved surface.

[0017] As a further description of the above technical solution:

[0018] A buffer rubber pad is provided on the concave curved surface.

[0019] As a further description of the above technical solution:

[0020] The die is connected to the second linear drive device on the workbench through a side connection seat.

[0021] As a further description of the above technical solution:

[0022] A cold air joint is provided on the side of the pressing die, the inner cavity of the cold air joint is connected to the second avoidance port, and an exhaust port is provided on the side of the blanking chute.

[0023] In summary, due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0024] The blanking die structure of the present invention realizes one-time punching and forming of the sheet metal by cooperating with the lower die and the pressing die with the punch corresponding to the sheet metal part. Compared with the conventional multiple punching and forming method, the die structure is simplified, the cost is reduced and the working efficiency is improved. As for the downward burr formed at the punching part of the original sheet metal after punching, the lower die is rotatably connected with the lifting seat, and the two are driven to lift and be arranged in the blanking trough. After the single sheet metal part is punched, the lifting seat is driven to descend, so that the lower die is separated from the burr of the original sheet metal, avoiding the wear between the die and the workpiece caused by the transportation of the original sheet metal before the two are separated, thereby reducing the service life of the die and the forming quality of the workpiece. During this period, the lower die and the lifting seat rotate relative to each other, so that the lower die gradually tilts and completely separates from the burr, so as to reduce the contact time between the two, improve the separation efficiency, and further reduce the wear between the structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the original sheet metal after punching when the existing sheet metal multiple punching forming die is used.

[0027] Figure 2 The usage state of a blanking die structure for one-time punching of sheet metal Figure 1 .

[0028] Figure 3 The usage state of a blanking die structure for one-time punching of sheet metal Figure 2 .

[0029] Figure 4 This diagram shows the usage status of the lower die and lifting seat in a blanking die structure for one-step punching of sheet metal.

[0030] Legend:

[0031] 1. Workbench; 2. Blanking chute; 3. Lower die; 4. Lifting seat; 5. First avoidance; 6. Pressing die; 7. Second avoidance; 8. Upper die; 9. Punch; 10. Rotating shaft; 11. Connecting groove; 12. Mounting groove; 13. Vertical screw; 14. Horizontal transmission shaft; 15. Servo motor; 16. Drawer opening; 17. Collection drawer; 18. Concave curved surface; 19. Air conditioning connector; 20. Exhaust port; 100. Original plate; 200. Sheet metal part; 300. Burst; 400. Micro-joint. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in a variety of different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in the subsequent drawings.

[0035] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are orientations or positional relationships in which the inventive product is usually placed when in use. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0036] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0037] See also Figure 1-4 The present invention provides a technical solution: a blanking die structure for punching and forming sheet metal in one step, comprising:

[0038] A workbench 1 has a blanking chute 2 on its top;

[0039] The lower mold 3 is rotatably connected to a lifting base 4. The lifting base 4 is driven up and down by a driving mechanism in the workbench 1. A first avoidance opening 5 is provided through the lower mold 3.

[0040] The pressing die 6 is arranged on the workbench 1 and has a second avoidance opening 7 formed therethrough. The lower die 3 and the pressing die 6 clamp and abut the original plate 100 on the workbench 1;

[0041] The upper die 8 is driven to rise and fall by the first linear drive device on the workbench 1 and is set above the blanking chute 2, and the punch 9 at the bottom thereof corresponds to the second avoidance opening 7 and the first avoidance opening 5.

[0042] The blanking die structure of the present invention realizes one-time punching and forming of the sheet metal by cooperating with the lower die 3 and the pressing die 6 through the punch 9 corresponding to the sheet metal part 200. Compared with the conventional multiple punching and forming method, the die structure is simplified, the cost is reduced, and the working efficiency is improved. As for the downward burr 300 formed at the punching position of the original plate 100 after punching, the lower die 3 is rotatably connected with the lifting seat 4, and the two are driven to rise and fall in the blanking trough 2. After the single sheet metal part 100 is punched, the lifting seat 4 is driven to descend, so that the lower die 3 is separated from the burr 300 of the original plate 100, avoiding the wear between the die and the workpiece caused by conveying the original plate 100 before the two are separated, thereby reducing the service life of the die and the forming quality of the workpiece. During this period, the lower die 3 and the lifting seat 4 rotate relative to each other, so that the lower die 3 gradually tilts and completely separates from the burr 300, so as to reduce the contact time between the two, improve the separation efficiency, and further reduce the wear between the structures.

[0043] The rotating shaft 10 on the side of the lower die 3 is rotatably inserted into the connecting groove 11 of the lifting base 4. The torsion spring is mounted on the rotating shaft 10, with its ends positioned on the rotating shaft 10 and the connecting groove 11, respectively. This improves the efficiency of the lower die 3 rotating and disengaging the flash 300. When the lower die 3 and the pressing die 6 clamp the original plate 100, the elastic rotation preload force of the torsion spring on the lower die 3 can further improve the clamping and positioning strength.

[0044] A mounting slot 12 extends from the side of the blanking chute 2. The drive mechanism is housed within this slot 12 and comprises vertical screws 13 (two are provided in this embodiment, and two are also provided for the lift base 4) and a horizontal drive shaft 14. The vertical screws 13 rotatably engage a bearing seat within the slot 12 and are threaded onto a threaded hole in the lift base 4. The horizontal drive shaft 14 rotates through a bracket within the slot 12, with the bevel gears on the horizontal drive shaft meshing with the bevel gears on the vertical screws 13 and the bevel gears on the output shaft of a servo motor 15 within the slot 12. This allows a single servo motor 15 to drive both vertical screws 13, reducing equipment usage and ensuring the stability of the lift base 4's lifting motion.

[0045] A drawer opening 16 is provided on the side of the blanking chute 2, and a collection drawer 17 is slidably mounted on the blanking chute 2 and the drawer opening 16. The top center of the collection drawer 17 is recessed to form a concave curved surface 18. A rubber cushion is provided on the concave curved surface 18. This provides cushioning and reception for the sheet metal parts 200 that fall into the blanking chute 2. The concave curved surface 18 and the rubber cushion provide a position-limiting and non-destructive collection of the sheet metal parts 200. The drawer-like design facilitates structural layout and the unified removal of the sheet metal parts 200, improving operational efficiency.

[0046] Furthermore, the die 6 docks with a second linear drive device on the workbench 1 via a lateral connector. This allows for stable and controllable downward pressure on the original sheet 100, ensuring clamping strength while reducing conveying resistance. The original sheet 100 is conveyed using conventional external conveying equipment, which will not be described in detail here. The aforementioned linear drive device can be a pneumatic cylinder, electric cylinder, hydraulic cylinder, or other conventional linear drive mechanism.

[0047] A cooling air connection 19 is provided on the side of the die 6, the inner cavity of which communicates with the second avoidance port 7. An exhaust port 20 is provided on the side of the blanking chute 2. After punching, low-temperature air can be introduced to cool the punch 9, die 6, lower die 3, the punched portion of the original sheet 100, and the sheet metal part 200, thereby cooling the mold structure and efficiently cooling the sheet metal to form it, thereby improving the quality of subsequent punching operations, the quality of sheet metal forming, and the safety of collection.

[0048] The working principle of the blanking die structure for one-time punching and forming of sheet metal in this embodiment includes the following: when in use, the original sheet 100 is conveyed to pass through the gap between the workbench 1 and the die 6, the servo motor 15 is operated, and the horizontal transmission shaft 14 and the vertical screw 13 are synchronously operated through the bevel gear meshing connection, and the lifting seat 4 is driven to rise, and the lower die 3 contacts the original sheet 100 and gradually becomes horizontal until the end faces of the two are fully abutted, as shown in the following figure. Figure 2 Afterwards, the punch 9 is pressed down, passes through the second avoidance opening 7 and punches the original plate 100, and the formed sheet metal part 200 falls onto the concave curved surface 18 for temporary storage, as shown in FIG. Figure 3 After that, the upper die 8 moves up and resets, the lifting seat 4 moves down and resets, the lower die 3 rotates and quickly separates from the original sheet material 100 at the punching point 300, as shown in FIG. Figure 4 As shown, during this process, an external cold air generator directs cold air through cold air connector 19 into second bypass port 7. The air then flows through first bypass port 5 and blanking chute 2 before being discharged and recovered through exhaust port 20 to cool the corresponding mold structure and workpiece. This completes one set of sheet metal punching operations, allowing the original sheet metal 100 to be transported for the next set of sheet metal punching operations. After the punching operation, the collection drawer 17 can be removed to collectively remove and collect the sheet metal parts 200 contained therein.

[0049] In summary, due to the adoption of the above technical solution, the blanking die structure for one-step punching and forming of sheet metal in this embodiment has the following beneficial effects compared to the prior art:

[0050] The blanking die structure of the present invention realizes one-time punching and forming of the sheet metal by cooperating with the lower die and the pressing die with the punch corresponding to the sheet metal part. Compared with the conventional multiple punching and forming method, the die structure is simplified, the cost is reduced and the working efficiency is improved. As for the downward burr formed at the punching part of the original sheet metal after punching, the lower die is rotatably connected with the lifting seat, and the two are driven to lift and be arranged in the blanking trough. After the single sheet metal part is punched, the lifting seat is driven to descend, so that the lower die is separated from the burr of the original sheet metal, avoiding the wear between the die and the workpiece caused by the transportation of the original sheet metal before the two are separated, thereby reducing the service life of the die and the forming quality of the workpiece. During this period, the lower die and the lifting seat rotate relative to each other, so that the lower die gradually tilts and completely separates from the burr, so as to reduce the contact time between the two, improve the separation efficiency, and further reduce the wear between the structures.

[0051] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A blanking die structure for punching and forming sheet metal in one step, characterized in that: include: A workbench with a blanking chute on the top; The lower die is rotatably connected to a lifting seat, and the lifting seat is driven up and down by a driving mechanism in the workbench. A first avoidance opening is provided through the lower die; A pressing die is arranged on the workbench and has a second avoidance opening therethrough, and the lower die and the pressing die clamp and abut against the original plate on the workbench; The upper die is driven to rise and fall by the first linear drive device on the workbench and is arranged above the blanking chute, and the punch at the bottom thereof corresponds to the second avoidance opening and the first avoidance opening.

2. A blanking die structure for one-step punching of sheet metal according to claim 1, characterized in that: The rotating shaft on the side of the lower mold is rotatably inserted into the connecting groove of the lifting seat, and the torsion spring is sleeved on the rotating shaft, and the ends of the torsion spring are respectively positioned on the rotating shaft and the connecting groove.

3. The blanking die structure for one-step punching of sheet metal according to claim 1, characterized in that: The side of the blanking trough extends into a mounting groove, and the driving mechanism is arranged in the mounting groove, which includes a vertical screw and a horizontal transmission shaft. The vertical screw rotates to connect with the bearing seat in the mounting groove, which is screwed on the screw hole of the lifting seat. The horizontal transmission shaft rotates and passes through the bracket in the mounting groove, and the bevel gear on it engages with the bevel gear on the vertical screw and the bevel gear on the output shaft of the servo motor in the mounting groove respectively.

4. The blanking die structure for one-step punching of sheet metal according to claim 1, characterized in that: A drawer opening is arranged on the side of the blanking trough, and the collecting drawer is slidably arranged on the blanking trough and the drawer opening.

5. The blanking die structure for one-step punching of sheet metal according to claim 4, characterized in that: The middle portion of the top surface of the material collection drawer is concave to form a concave curved surface.

6. The blanking die structure for one-step punching of sheet metal according to claim 5, characterized in that: A buffer rubber pad is provided on the concave curved surface.

7. The blanking die structure for one-step punching of sheet metal according to claim 1, characterized in that: The die is connected to the second linear drive device on the workbench through a connecting seat on the side.

8. The blanking die structure for one-step punching of sheet metal according to claim 1, characterized in that: A cold air joint is provided on the side of the pressing die, the inner cavity of the cold air joint is connected to the second avoidance port, and an exhaust port is provided on the side of the blanking chute.

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