Sheet metal machining stamping device

Abstract

The invention relates to the technical field of sheet metal machining, and discloses a sheet metal machining stamping device which comprises a rack, a side plate is fixedly connected to one side of the surface of the rack, an operation platform is arranged on the front side of the rack, a lower die base is fixedly installed on the top of the operation platform, and a mounting plate is movably arranged on the rack; the two sides of the mounting plate are slidably connected with the outer wall of the rack, the bottom of the mounting plate is fixedly connected with an upper die head, a driving mechanism is arranged on the side wall of the rack, a feeding mechanism is further arranged on the operation platform, a demolding mechanism is arranged on the mounting plate, and through two symmetrically-arranged second spring rods, the upper die head and the lower die head are fixedly connected. According to the automatic feeding device for the iron plate blank, automatic feeding operation can be conducted on the iron plate blank with the thin edge, automatic separation can be conducted after feeding, the situation that the iron plate blank is inconvenient to feed can be improved, stress on the periphery of a formed workpiece can be balanced through the demolding frame strips, and the situation that clamping occurs in the demolding process is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of sheet metal processing, in particular to a sheet metal processing punching device. Background Art

[0002] Sheet metal stamping is a metal processing technology that is mainly used to form and cut metal sheets through the action of stamping dies through external forces to manufacture various parts. Sheet metal stamping uses equipment such as punch presses. A common operation method is to put the metal sheet into the die, and under the action of the die, the metal sheet is molded into the desired shape through pressure;

[0003] For a hollow rectangular short tube with a notch on the top, it is necessary to perform sheet metal stamping on the iron plate blank with folded sides. Due to the small size of the blank and the thin edge of the iron plate blank, it is not convenient to load the iron plate blank. In addition, the pressure generated during the stamping process is relatively large, which will make the edge of the iron plate blank close to the outer wall of the die head. The stamping device needs to be stopped during the demolding process, which will affect the efficiency of sheet metal stamping to a certain extent. Summary of the invention

[0004] The purpose of the present invention is to provide a sheet metal processing stamping device to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: comprising a frame, a side plate is fixedly connected to one side of the surface of the frame, an operating platform is arranged on the front side of the frame, a lower die seat is fixedly installed on the top of the operating platform, a mounting plate is movably arranged on the frame, both sides of the mounting plate are slidably connected to the outer wall of the frame, an upper die head is fixedly connected to the bottom of the mounting plate, a driving mechanism is arranged on the side wall of the frame, a feeding mechanism is also arranged on the operating platform, and a demoulding mechanism is arranged on the mounting plate;

[0005] The driving mechanism includes a guide wheel, the guide wheel is rotatably arranged at the bottom end of one side of the outer side of the mounting plate, the bottom of the guide wheel abuts a transmission rod, the axis of the transmission rod is rotatably connected to the outer wall of the frame, a gear 1 is fixedly connected to the transmission rod, a rack is meshed at the bottom of the gear 1, the rack is slidably connected to the side plate, a spring rod 1 is arranged at the bottom of the transmission rod, the output end of the spring rod 1 abuts against the bottom end of the transmission rod, a gear 2 is meshed at the end of the rack, a wheel disc is fixedly connected to one side of the gear 2, two wheel discs are arranged, and belts are sleeved and installed on the two wheel discs;

[0006] The feeding mechanism comprises a discharge box, a feeding rack is fixedly connected to the bottom of the discharge box, a plurality of blanks are stacked inside the discharge box, a cross bar is slidably connected to the bottom of the feeding rack, mounting seats are fixedly connected to both ends of the cross bar, a vertical rod is movably connected to the mounting seat, a spring rod 2 is fixedly installed on the top of the vertical rod, an output shaft of the spring rod 2 passes through one end of the top of the vertical rod and contacts with the inner surface of the blank, a through groove is provided on the bottom surface of the rod body of the spring rod 2, a release rod is fixedly connected to one end of the output shaft of the spring rod 2, and the release rod passes through the through groove;

[0007] A wedge block is slidably connected to the bottom of the release rod, a bottom plate is fixedly installed on the bottom of the vertical rod, a limit contact is fixedly installed in the middle of the bottom plate, a reset contact is slidably connected to the side of the bottom plate, side hanging plates are fixedly connected to both sides of the loading rack, a primary extrusion block is fixedly installed on one side of the side hanging plate close to the bottom plate, a secondary extrusion block is arranged on the top of the primary extrusion block, and release contacts are symmetrically arranged on the end of the loading rack away from the side hanging plate.

[0008] Preferably, the two wheel discs are rotatably mounted on the outer wall of the discharge box, and a screw rod is fixedly connected to the axis of one of the wheel discs that is not connected to the second gear, and the screw rod is threadedly connected to the middle part of the cross bar.

[0009] Preferably, the bottom of the base plate is fixedly connected to a hanging rod, the bottom of the mounting seat is equidistantly provided with a plurality of abutment plates, the sides of the plurality of abutment plates are provided with a plurality of trigger plates, the surfaces of the plurality of trigger plates are rotatably connected to the bottom of the mounting seat, and a circular cut is provided at the bottom of the hanging rod.

[0010] Preferably, a one-way wheel is rotatably connected to the bottom of one end of the loading rack, a cam is fixedly connected to the side wall of the one-way wheel, a guide plate is provided below the cam, and a slot is provided through the surface of the guide plate.

[0011] Preferably, a support seat is fixedly mounted on the bottom end of the loading rack, the guide plate is slidably connected to the support seat, a guide groove is provided on the surface of the support seat, and the bottom end of the hanging rod is slidably connected to the guide groove.

[0012] Preferably, a baffle is fixedly mounted on the surface of one end of the loading rack, and the baffle is used to position the blank during the loading process.

[0013] Preferably, two cylinders are arranged on the side of the loading rack, and the output shafts of the two cylinders are fixedly connected with push plates, and the push plates are used to push the blanks on the loading rack onto the lower die base.

[0014] Preferably, the top surface height of the loading rack is higher than the top surface height of the lower mold base, so as to prevent the blank from getting stuck during loading.

[0015] Preferably, the demoulding mechanism includes a central slide rod slidably arranged on the top of the mounting plate, the bottom of the central slide rod is symmetrically provided with demoulding frame strips, both ends of the central slide rod are rotatably connected with rollers, a through hole is penetrated through the surface of the mounting plate, a demoulding plate is arranged at the top in the vertical direction of the through hole, the demoulding plate is fixedly connected to the frame, and the demoulding plate is wedge-shaped and has a smooth bottom end.

[0016] Preferably, the demoulding frame strip is arranged in an I-shape, which serves to adapt to the square shape of the workpiece and facilitate demoulding of the formed workpiece.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, through the drive mechanism, under the elastic effect of the spring rod, when the upper die head is lifted, the transmission screw rotates to drive the feeding mechanism to push the blank out from the bottom of the discharge box, and when the upper die head is lowered, the transmission screw drives the feeding mechanism to return to its position, which is conducive to rapid feeding after one stamping is completed, and is convenient for improving the operating efficiency of the stamping device;

[0019] 2. In the present invention, two symmetrically arranged spring rods 2 can keep the blank in a horizontal state during the loading process. When the edge of one end of the blank contacts the baffle bar, the two spring rods 2 are automatically retracted inward to break contact with the blank through the wedge block, the limit contact and the release contact. Not only can the iron plate blank with a thin edge be automatically loaded, but it can also be automatically disengaged after loading, which is conducive to improving the situation where the iron plate blank is inconvenient to load;

[0020] 3. In the present invention, by setting the guide groove, during the return process of the vertical pole, the trigger plate drives the one-way wheel to rotate, so that the guide plate pulls down the hanging rod during the downward movement, so that the bottom end of the hanging rod is stuck in the guide groove and continues to slide in the guide groove. By lowering the height of the vertical pole, the front and rear sides of the iron plate blank are unobstructed, and the cylinder directly pushes the iron plate blank onto the lower die seat, which is beneficial to further improve the efficiency of sheet metal stamping.

[0021] 4. In the present invention, by setting the demoulding frame strips, after the stamping is completed, when the upper die head is lifted upward, the two demoulding frame strips translate on the mounting plate, and in the process, push the formed workpiece wrapped on the upper die head, and gradually make the workpiece fall off the upper die head. During the mold opening process, the formed workpiece is demoulded, and according to the demoulding frame strips, the force on all sides of the formed workpiece can be balanced to prevent jamming during the demoulding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2It is a rear view structural schematic diagram of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the driving mechanism of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the feeding mechanism of the present invention;

[0026] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of the A area in the middle;

[0027] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure of the middle B area;

[0028] Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged structure of the middle C area;

[0029] Figure 8 It is a schematic diagram of the related structures of the spring rod 2, the through slot and the release rod of the present invention;

[0030] Fig. 9 It is a schematic diagram of the cross-section structure of the loading rack of the present invention;

[0031] Fig.10 It is a structural schematic diagram of the demoulding mechanism of the present invention.

[0032] In the figure: 1, frame; 2, side plate; 3, operating platform; 4, lower die seat; 5, mounting plate; 6, upper die head; 7, driving mechanism; 701, guide wheel; 702, transmission rod; 703, gear 1; 704, rack; 705, spring rod 1; 706, gear 2; 707, belt; 708, wheel; 709, screw rod; 8, feeding mechanism; 801, discharge box; 802, feeding rack; 803, blank; 804, cross bar; 805, mounting seat; 806, vertical rod; 807, spring rod 2; 808, through slot; 809, release rod; 810, wedge block; 811, Bottom plate; 812, limit contact; 813, reset contact; 814, side hanging plate; 815, primary extrusion block; 816, secondary extrusion block; 817, release contact; 818, hanging rod; 819, abutment plate; 820, trigger plate; 821, annular cut; 822, one-way wheel; 823, cam; 824, guide plate; 825, slot; 826, support seat; 827, guide groove; 828, stop bar; 829, cylinder; 830, push plate; 9, demoulding mechanism; 901, center slide bar; 902, demoulding frame strip; 903, roller; 904, through hole; 905, demoulding plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 10 , including a frame 1, a side plate 2 is fixedly connected to one side of the surface of the frame 1, an operating platform 3 is arranged on the front side of the frame 1, a lower die base 4 is fixedly installed on the top of the operating platform 3, a mounting plate 5 is movably arranged on the frame 1, both sides of the mounting plate 5 are slidably connected to the outer wall of the frame 1, an upper die head 6 is fixedly connected to the bottom of the mounting plate 5, a driving mechanism 7 is arranged on the side wall of the frame 1, a feeding mechanism 8 is also arranged on the operating platform 3, and a demoulding mechanism 9 is arranged on the mounting plate 5;

[0035] The driving mechanism 7 includes a guide wheel 701, which is rotatably arranged at the bottom end of one side outside the mounting plate 5, a transmission rod 702 is abutted at the bottom of the guide wheel 701, and the axis of the transmission rod 702 is rotatably connected to the outer wall of the frame 1, a gear 703 is fixedly connected to the transmission rod 702, a rack 704 is meshed at the bottom of the gear 703, and the rack 704 is slidably connected to the side plate 2, a spring rod 705 is arranged at the bottom of the transmission rod 702, and the output end of the spring rod 705 is connected to the side plate 2. The bottom end of the transmission rod 702 is abutted, and the end of the rack 704 is meshed with a second gear 706. A wheel disc 708 is fixedly connected to one side of the second gear 706. Two wheel discs 708 are provided. Belts 707 are sleeved and installed on the two wheel discs 708. Both wheel discs 708 are rotatably installed on the outer wall of the discharge box 801. A screw rod 709 is fixedly connected to the axis of one of the wheel discs 708 that is not connected to the second gear 706. The screw rod 709 is threadedly connected to the middle part of the cross bar 804.

[0036] Embodiment 1:

[0037] See also Figures 4 to 5 , Figure 8 , Fig. 9, this embodiment provides a technical solution: the feeding mechanism 8 includes a discharge box 801, the bottom of the discharge box 801 is fixedly connected with a feeding rack 802, a plurality of blanks 803 are stacked inside the discharge box 801, a cross bar 804 is slidably connected to the bottom of the feeding rack 802, both ends of the cross bar 804 are fixedly connected with mounting seats 805, the mounting seats 805 are movably connected with vertical rods 806, the top of the vertical rod 806 is fixedly installed with a spring rod 807, the output shaft of the spring rod 807 passes through one end of the top of the vertical rod 806 and contacts the inner surface of the blank 803, the bottom surface of the rod body of the spring rod 807 is provided with a through slot 808, one end of the output shaft of the spring rod 807 is fixedly connected with a release rod 809, and the release rod 809 passes through the through slot 808;

[0038] A wedge block 810 is slidably connected to the bottom of the release rod 809, a bottom plate 811 is fixedly installed at the bottom of the vertical rod 806, a limit contact 812 is fixedly installed in the middle of the bottom plate 811, a reset contact 813 is slidably connected to the side of the bottom plate 811, side hanging plates 814 are fixedly connected to both sides of the loading rack 802, a primary extrusion block 815 is fixedly installed on one side of the side hanging plate 814 close to the bottom plate 811, a secondary extrusion block 816 is arranged on the top of the primary extrusion block 815, and a release contact 817 is symmetrically arranged on the end of the loading rack 802 away from the side hanging plate 814;

[0039] A stop bar 828 is fixedly mounted on the surface of one end of the loading rack 802, and the stop bar 828 is used to position the blank 803 during the loading process;

[0040] Two cylinders 829 are arranged on the side of the loading rack 802, and the output shafts of the two cylinders 829 are fixedly connected with a push plate 830, and the push plate 830 is used to push the blank 803 on the loading rack 802 onto the lower die base 4;

[0041] The top surface height of the loading rack 802 is higher than the top surface height of the lower die base 4, and its function is to prevent the blank 803 from being stuck during the loading process;

[0042] In this embodiment, the outer edge of the reset contact 813 is set to be arc-shaped, which is used to reduce the friction generated when contacting the primary extrusion block 815, to ensure the smooth sliding of the reset contact 813 and prevent it from tilting during the process. A spring is provided between the reset contact 813 and the limit contact 812 to facilitate the reset contact 813 to return to its original position after sliding.

[0043] In this embodiment, the edge size of one side of the secondary extrusion block 816 is greater than the edge size of one side of the primary extrusion block 815. When the limit contact 812 and the reset contact 813 are attached, the secondary extrusion block 816 can continue to extrude the wedge block 810.

[0044] Embodiment 2:

[0045] See also Figure 6 to Figure 7 This embodiment provides a technical solution: a hanging rod 818 is fixedly connected to the bottom of the bottom plate 811, a plurality of abutment plates 819 are equidistantly arranged at the bottom of the mounting seat 805, a plurality of trigger plates 820 are arranged on the sides of the plurality of abutment plates 819, the surfaces of the plurality of trigger plates 820 are rotatably connected to the bottom of the mounting seat 805, and a circular cutout 821 is opened at the bottom of the hanging rod 818;

[0046] A one-way wheel 822 is rotatably connected to the bottom of one end of the loading rack 802, a cam 823 is fixedly connected to the side wall of the one-way wheel 822, a guide plate 824 is arranged below the cam 823, and a slot 825 is formed through the surface of the guide plate 824;

[0047] A support seat 826 is fixedly installed at the bottom end of the loading rack 802, and the guide plate 824 is slidably connected to the support seat 826. A guide groove 827 is provided on the surface of the support seat 826, and the bottom end of the hanging rod 818 is slidably connected to the guide groove 827;

[0048] In this embodiment, a spring is provided inside the mounting seat 805 to facilitate the return of the vertical rod 806 after being pulled down;

[0049] In this embodiment, the opening of the guide groove 827 at one end of the slot 825 is relatively large, so that the bottom end of the hanging rod 818 can be smoothly inserted into the guide groove 827, and the arc of the opening is conducive to the buffering of the hanging rod 818;

[0050] Embodiment three:

[0051] See also Fig.10 , this embodiment provides a technical solution: the demoulding mechanism includes a central slide bar 901 slidably arranged on the top of the mounting plate 5, a demoulding frame strip 902 is symmetrically arranged at the bottom of the central slide bar 901, rollers 903 are rotatably connected at both ends of the central slide bar 901, a through hole 904 is opened through the surface of the mounting plate 5, a demoulding plate 905 is arranged on the top of the through hole 904 in the vertical direction, the demoulding plate 905 is fixedly connected to the frame 1, and the demoulding plate 905 is wedge-shaped and has a smooth bottom end;

[0052] The demoulding frame strip 902 is arranged in an I-shaped configuration, and its function is to adapt to the square-shaped workpiece, so as to facilitate demoulding of the formed workpiece;

[0053] In this embodiment, according to the I-shaped demoulding frame strip 902, during the demoulding process, the force on all sides of the molded workpiece can be evenly applied, thereby preventing jamming during demoulding.

[0054] In this embodiment, according to the stripping plate 905, before the upper die head 6 descends downward and enters the wrapping range of the lower die base 4, the roller 903 is disconnected from the stripping plate 905, so that the stripping frame strip 902 is located in front of the upper die head 6 and does not contact the blank 803 placed on the lower die base 4;

[0055] The use method and advantages of the present invention: The sheet metal processing punching device has the following working process:

[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown:

[0057] S1: In the initial state, the upper die head 6 and the lower die base 4 are in a pressed state, and the spring rod 2 807 is in a released state. Before the sheet metal stamping starts, the operator puts the iron plate blank 803 into the discharge box 801, and then controls the frame 1 of the stamping device to lift the mounting plate 5 upward, and the mounting plate 5 drives the upper die head 6 to be synchronously lifted upward. At the same time, when the roller installed on the outer side of the mounting plate 5 moves upward, the transmission rod 702 is pushed upward by the spring rod 1 705, and rotates upward with the connection between it and the frame 1 as the axis. During the process, the rack 704 is driven by the gear 1 703 to slide on the side plate 2. During the process, the rack 704 drives the gear 2 706 meshing with it to rotate continuously, so that the transmission belt 707 of the rack 704 rotates, and the belt 707 drives one of the lower wheels 708 to rotate, and the wheel 708 drives the screw rod 709 to rotate continuously;

[0058] S2: During the continuous rotation of the screw rod 709, the cross bar 804 under the transmission loading rack 802 moves forward. During the process, the two spring rods 807 in the released state are at the bottom of the discharge box 801, driving the bottom piece of blank 803 to move forward. The blank 803 slides on the loading rack 802. When the side of the blank 803 that contacts the two spring rods 807 approaches the stop bar 828, the release rod 809 contacts the surface of the release contact 817 and moves outward along the inclined surface of the release contact 817. During the sliding process on the vertical rod 806, the output shaft of the second spring rod 807 is driven to be retracted inwards, and then when the wedge block 810 slidably installed at the bottom end of the release rod 809 contacts the limit contact 812, it is pushed upwards by the limit contact 812. After passing the limit contact 812, the wedge block 810 falls from above and is located between the limit contact 812 and the reset contact 813. At this time, the output shafts of the two second spring rods 807 are completely retracted inwards and disconnected from the blank 803. At this time, the upper die head 6 reaches the high position of the frame 1;

[0059] S3: Control the stamping device to drive the upper die head 6 to move downward to perform the stamping operation. At this time, the guide wheel 701 on the side of the mounting plate 5 presses down the transmission rod 702, causing the transmission rod 702 to move in the opposite direction, thereby the transmission drive mechanism 7 moves in the opposite direction. The screw rod 709 drives the cross bar 804 to return during the reverse rotation. When the cross bar 804 returns, the trigger plate 820 is in a vertical state, and one side of it is blocked by the abutment plate 819. When it contacts the one-way wheel 822, it is subjected to the lateral thrust of the trigger plate 820, causing the one-way wheel 822 to rotate in the same direction as the movement of the trigger plate 820, driving the convex end of the cam 823 to rotate downward, and the cam 823 presses down the guide plate 824 slidably mounted on the support seat 826. According to the set annular cutout 821 and the card slot 825, when the release rod 809 contacts the release contact 817, the hanging rod 818 passes through the annular cutout 821 and is clamped on the guide plate 824. When the guide plate 824 moves downward, the hanging rod 818 is pulled to move downward synchronously. Through the guide groove 827, the bottom of the hanging rod 818 is inserted into the guide groove 827 during the return process and continues to slide in the guide groove 827. When the hanging rod 818 is inserted into the inside of the guide groove 827, the vertical rod 806 is driven to slide downward, so that the top height of the vertical rod 806 is lower than the top height of the loading rack 802, so that the vertical rod 806 is in the return process. In the middle, the two sides of the blank 803 will not be blocked, thereby affecting the operation of the upper die of the blank 803. After the two vertical rods 806 slide down to a low position, the cylinder 829 is started, and the push plate 830 pushes the blank 803 from the loading rack 802 to the lower die base 4. Then the upper die head 6 and the lower die base 4 are molded together to punch the blank 803. The blank 803 is punched into a hollow rectangle with an opening at the upper end according to the shape of the lower die base 4 and the upper die head 6.

[0060] S4: During the process of the vertical rod 806 driving the second spring rod 807 to return, when the second spring rod 807 passes the edge of the blank 803, the outer wall of the reset contact 813 contacts the primary extrusion block 815, causing the reset contact 813 to translate in the direction close to the limit contact 812. During the process, the reset contact 813 contacts the inclined surface of the wedge block 810, and pushes the wedge block 810 upward, so that the bottom end of the wedge block 810 is located between the reset contact 813 and the limit contact 812. During the process, the wedge block 810 is squeezed by the secondary extrusion block 816, so that the wedge block 810 returns under the elastic force of the second spring rod 807, and the output shaft of the second spring rod 807 extends outward again, which is convenient for pushing the blank 803 next time;

[0061] S5: After the stamping is completed, the upper die head 6 is controlled to rise upward. After moving a certain distance, the upper die head 6 is completely out of the wrapping range of the lower die base 4. The two rollers 903 contact the bottom of the stripping plate 905 and roll along the inclined surface of the stripping plate 905. During the process, the center slide bar 901 is driven to translate inward on the mounting plate 5. The two stripping frame strips 902 press against the edge of the molded workpiece and push the molded workpiece off the upper die head 6 to complete the demolding operation of the molded workpiece.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sheet metal processing punching device, characterized in that: The machine comprises a frame (1), a side plate (2) is fixedly connected to one side of the surface of the frame (1), an operating platform (3) is arranged on the front side of the frame (1), a lower die seat (4) is fixedly installed on the top of the operating platform (3), a mounting plate (5) is movably arranged on the frame (1), two sides of the mounting plate (5) are slidably connected to the outer wall of the frame (1), an upper die head (6) is fixedly connected to the bottom of the mounting plate (5), a driving mechanism (7) is arranged on the side wall of the frame (1), a feeding mechanism (8) is also arranged on the operating platform (3), and a demoulding mechanism (9) is arranged on the mounting plate (5); The driving mechanism (7) comprises a guide wheel (701), the guide wheel (701) being rotatably arranged at the bottom end of one side outside the mounting plate (5), the bottom of the guide wheel (701) being in contact with a transmission rod (702), the axis of the transmission rod (702) being rotatably connected to the outer wall of the frame (1), the transmission rod (702) being fixedly connected with a gear 1 (703), the bottom of the gear 1 (703) being meshed with a rack (704), the rack (704) Slidingly connected to the side plate (2), a spring rod 1 (705) is provided at the bottom of the transmission rod (702), the output end of the spring rod 1 (705) is in contact with the bottom end of the transmission rod (702), the end of the rack (704) is meshed with a gear 2 (706), one side of the gear 2 (706) is fixedly connected with a wheel disc (708), two wheel discs (708) are provided, and belts (707) are sleeved and installed on the two wheel discs (708); The feeding mechanism (8) comprises a discharge box (801), the bottom of which is fixedly connected to a feeding rack (802), a plurality of blanks (803) are stacked inside the discharge box (801), a cross bar (804) is slidably connected to the bottom of the feeding rack (802), both ends of the cross bar (804) are fixedly connected to mounting seats (805), and the interior of the mounting seat (805) is movably connected to a vertical rod (806), A second spring rod (807) is fixedly installed on the top of the vertical rod (806), the output shaft of the second spring rod (807) passes through one end of the top of the vertical rod (806) and contacts the inner surface of the blank (803), a through groove (808) is provided on the bottom surface of the rod body of the second spring rod (807), one end of the output shaft of the second spring rod (807) is fixedly connected to a release rod (809), and the release rod (809) passes through the through groove (808); The bottom of the release rod (809) is slidably connected to a wedge block (810), the bottom of the vertical rod (806) is fixedly installed with a bottom plate (811), the middle of the bottom plate (811) is fixedly installed with a limit contact (812), the side of the bottom plate (811) is slidably connected with a reset contact (813), the two sides of the loading rack (802) are fixedly connected with side hanging plates (814), a primary extrusion block (815) is fixedly installed on a side of the side hanging plate (814) close to the bottom plate (811), a secondary extrusion block (816) is arranged on the top of the primary extrusion block (815), and a release contact (817) is symmetrically arranged on the end of the loading rack (802) away from the side hanging plate (814).

2. A sheet metal processing punching device according to claim 1, characterized in that: The two wheel discs (708) are both rotatably mounted on the outer wall of the discharge box (801), and a screw rod (709) is fixedly connected to the axis of one of the wheel discs (708) not connected to the second gear (706), and the screw rod (709) is threadedly connected to the middle part of the cross bar (804).

3. A sheet metal processing punching device according to claim 1, characterized in that: The bottom of the base plate (811) is fixedly connected to a hanging rod (818), the bottom of the mounting seat (805) is equidistantly provided with a plurality of abutment plates (819), the sides of the plurality of abutment plates (819) are provided with a plurality of trigger plates (820), the surfaces of the plurality of trigger plates (820) are rotatably connected to the bottom of the mounting seat (805), and a circular cutout (821) is provided at the bottom of the hanging rod (818).

4. A sheet metal processing punching device according to claim 1, characterized in that: A one-way wheel (822) is rotatably connected to the bottom of one end of the loading rack (802), a cam (823) is fixedly connected to the side wall of the one-way wheel (822), a guide plate (824) is arranged below the cam (823), and a slot (825) is provided on the surface of the guide plate (824).

5. A sheet metal processing punching device according to claim 4, characterized in that: A support seat (826) is fixedly installed at the bottom end of the loading rack (802), the guide plate (824) is slidably connected to the support seat (826), a guide groove (827) is provided on the surface of the support seat (826), and the bottom end of the hanging rod (818) is slidably connected to the guide groove (827).

6. A sheet metal processing punching device according to claim 5, characterized in that: A retaining bar (828) is fixedly mounted on the surface of one end of the loading rack (802), and the retaining bar (828) is used to position the blank (803) during the loading process.

7. A sheet metal processing punching device according to claim 6, characterized in that: Two cylinders (829) are arranged on the side of the loading rack (802), and the output shafts of the two cylinders (829) are fixedly connected with a push plate (830), and the push plate (830) is used to push the blank (803) on the loading rack (802) onto the lower mold base (4).

8. A sheet metal processing punching device according to claim 7, characterized in that: The top surface height of the loading rack (802) is higher than the top surface height of the lower die base (4), and its function is to prevent the blank (803) from getting stuck during the loading process.

9. The sheet metal processing punching device according to claim 1, characterized in that: The demoulding mechanism comprises a central sliding rod (901) slidably arranged on the top of the mounting plate (5), a demoulding frame strip (902) is symmetrically arranged at the bottom of the central sliding rod (901), rollers (903) are rotatably connected to the two ends of the central sliding rod (901), a through hole (904) is penetrated through the surface of the mounting plate (5), a demoulding plate (905) is arranged on the top of the through hole (904) in a vertical direction, the demoulding plate (905) is fixedly connected to the frame (1), and the demoulding plate (905) is wedge-shaped and has a smooth bottom end.

10. A sheet metal processing punching device according to claim 9, characterized in that: The demoulding frame strip (902) is arranged in an I-shape, and its function is to adapt to the square shape of the workpiece, so as to facilitate demoulding of the formed workpiece.

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