A continuous stamping die for automobile parts capable of automatically removing chips

Abstract

The application relates to the technical field of stamping dies and discloses an automatic scrap-removing continuous stamping die for automobile parts, which comprises an upper die and a lower die, the upper die is located directly above the lower die and can be subjected to die closing stamping and die opening resetting movement along the vertical direction relative to the lower die, two driving racks two extending along the vertical direction are symmetrically arranged on the outer side of the upper die, two mounting seats are fixedly arranged on the position corresponding to the driving rack two on the top end of the lower die, driving gears two are movably connected with the mounting seats through bearings, and driving screws are fixedly connected with the outer side of the driving gears two. Through the double scrap-removing mode combining the cleaning brush sweeping with the air cylinder high-pressure pneumatic blowing, and in cooperation with the directional chip removal structure of the travel switch and the flow guide flap, the scrap on the surface of the lower die concave die, the die groove and the deep position of the hole can be completely removed, and the problems of the stamping part scratch and the die wear caused by the scrap residue can be effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, specifically to a continuous stamping die for automotive parts with automatic chip removal. Background Technology

[0002] In the industrial production of automotive parts, progressive stamping dies are the core process equipment for realizing the blanking, bending, and forming of metal sheets. They have advantages such as high production efficiency, good part consistency, and suitability for large-scale continuous operation, and are widely used in the manufacturing of automotive structural components. During the blanking and trimming processes of progressive stamping, the material is subjected to shearing action, which generates a large number of metal chips. These chips are characterized by their small size, easy adhesion, and tendency to splash. Under high-speed progressive stamping conditions, they are very likely to remain on the working surface of the die cavity, in the grooves of the die, in the forming holes, and in the die gaps.

[0003] Currently, the main methods for chip removal in conventional continuous stamping dies are manual cleaning and fixed air nozzle blowing. However, these methods generally suffer from incomplete chip removal. Manual cleaning cannot keep up with the pace of high-speed continuous production and poses safety hazards; fixed air nozzle blowing can only remove some surface chips, and its effect on removing chips adhering to cavities, holes, and gaps is limited. If chips are not removed in a timely and effective manner during stamping intervals, residual chips will be squeezed between the die and the workpiece during die closing, causing scratches and indentations on the surface of the stamped parts, affecting the appearance quality and dimensional accuracy of the parts; at the same time, chips will accelerate the wear of working parts such as punches and dies, reduce the service life of the dies, increase the failure rate and maintenance costs in the production process, and affect the operational stability of the continuous production line.

[0004] Therefore, a solution is proposed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic chip removal continuous stamping die for automotive parts, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an automatic chip removal continuous stamping die for automotive parts, comprising an upper die and a lower die, wherein the upper die is located directly above the lower die and can perform die closing stamping and die opening and resetting movements relative to the lower die in the vertical direction; Two drive racks extending vertically are symmetrically fixed on the outer side of the upper mold. Two mounting seats are fixed on one side of the top of the lower mold at the position corresponding to the drive racks. Drive gears are movably connected inside the mounting seats through bearings. Drive screws are fixedly connected to the outer side of the drive gears. Sliding drive blocks are threaded onto the outer side of the drive screws. The lower die has a vertical through hole at the top corresponding to the stamping station. A push rod is slidably installed in the vertical through hole, and the lower end of the push rod is in transmission engagement with the sliding drive block. A connecting frame is fixedly connected to the outside of the sliding drive block. A mounting cylinder is fixedly installed on one side of the top of the lower die. A limit switch is installed inside the mounting cylinder. A horizontal through hole is opened on the side wall of the mounting cylinder. A movable rod is slidably connected to the horizontal through hole. One end of the movable rod is fixedly connected to the connecting frame, and the other end can extend into the mounting cylinder to form a trigger engagement with the limit switch.

[0007] Through the above technical solution, the opening and closing motion of the upper mold drives the meshing transmission of the second drive rack and the second drive gear, causing the drive screw to rotate and drive the sliding drive block to move horizontally, thereby driving the ejector rod to lift the workpiece. At the same time, the drive connecting frame and the movable rod are synchronously displaced, and the limit switch is triggered at the set position. This can convert the movement of the mold itself into a linkage control signal for ejection and chip removal, realizing the synchronous coordination of stamping, ejection, and chip removal triggering.

[0008] Preferably, guide slides extending along the width direction of the mold are fixedly provided on both sides of the top of the lower mold. Two electromagnetic suction blocks are installed on the inner side of the guide slides. An installation frame is fixedly connected to the outer side of one of the electromagnetic suction blocks. The installation frame is arranged transversely along the lower mold. Multiple cleaning brushes are fixedly installed on the inner side of the installation frame. The working surface of the cleaning brush is in close contact with the top surface of the lower mold cavity, and is used to brush and clean the working surface of the cavity.

[0009] The above technical solution utilizes an electromagnetic suction block to drive the mounting bracket and cleaning brush to move smoothly along the guide slide, continuously brushing away debris from the die working surface, keeping the working surface clean, and reducing the impact of debris on the quality of stamped parts and the condition of the die.

[0010] Preferably, an air cylinder is fixedly installed on the outer side of the lower mold, and a driving piston is slidably connected to the inside of the air cylinder. A piston rod is fixedly connected to the top of the driving piston. An air jet pipe and an air inlet pipe are respectively connected to the outer wall of the air cylinder. The other end of the air jet pipe extends into the inner side of the lower mold and is provided with multiple nozzles facing the working surface of the die. The nozzles are used to perform high-pressure auxiliary blowing to remove residual debris from the surface of the die and the holes.

[0011] The above technical solution utilizes the air pressure generated by piston movement to spray airflow from the nozzle onto the surface of the die and the holes, thus assisting in the blowing away of debris that is difficult to remove by brushing.

[0012] Preferably, both the jet pipe and the air inlet pipe are equipped with one-way valves, and the two one-way valves are in opposite directions, so that the air cylinder can only draw in external air through the air inlet pipe and spray high-pressure gas in a directional manner through the jet pipe.

[0013] The above technical solution enables the air cylinder to form a stable airflow circuit with unidirectional air intake and unidirectional air release, ensuring stable air release pressure.

[0014] Preferably, a drive rack extending in a horizontal direction is fixedly connected to the outer side of the connecting frame, and a drive gear is meshed with the outer side of the drive rack; a connecting shaft is fixedly connected to the end of the drive gear; an installation shaft is rotatably mounted on one side of the lower mold; a guide flap is fixedly connected to the outer side of the installation shaft; the guide flap is used for guiding the workpiece after stamping and for the concentrated discharge of debris.

[0015] The above technical solution converts the horizontal movement of the connecting frame into rotational power, which drives the guide flap to move, thereby realizing the orderly feeding of workpieces and the directional discharge of debris.

[0016] Preferably, bevel gears are fixedly provided at the corresponding ends of the connecting shaft and the mounting shaft, and the two bevel gears mesh with each other.

[0017] The above technical solution converts horizontal rotational motion into vertical rotational motion, causing the guide flap to flip.

[0018] Preferably, a roller is rotatably mounted at the bottom end of the top rod, and a lifting ramp adapted to the roller is provided on the top of the sliding drive block, with the roller rolling in cooperation with the lifting ramp.

[0019] The above technical solution smoothly transforms the horizontal motion of the sliding drive block into the vertical lifting motion of the push rod, making the ejection action smooth and stable.

[0020] Preferably, a guide bushing is provided at the top of the lower mold corresponding to the vertical through hole of the ejector rod. The guide bushing is sleeved on the outside of the ejector rod and slides in cooperation with the ejector rod. A return spring is sleeved on the outside of the ejector rod.

[0021] Through the above technical solutions, the guide bushing can constrain the movement direction of the push rod, reduce uneven wear, and the return spring can reliably reset the push rod after the lifting is completed, ensuring the stability of continuous operation.

[0022] Preferably, the second drive gear meshes with the second drive rack, and the bottom end of the sliding drive block is slidably connected to the inner wall of the lower mold.

[0023] The above technical solution transforms the opening and closing motion of the upper mold into stable rotational and horizontal power, making the sliding drive block move smoothly.

[0024] Preferably, the movable rod slides and seals with the transverse through hole of the mounting cylinder, the limit switch is a contact-type trigger switch, the limit switch is electrically connected to the electromagnetic suction block, and the trigger signal is used to control the electromagnetic suction block to turn on and off.

[0025] The above technical solution uses mechanical displacement to trigger an electronic control signal to achieve timing control of the electromagnetic suction block, thus synchronizing the chip removal action with the material ejection action.

[0026] This invention provides a continuous stamping die for automotive parts with automatic chip removal. It has the following advantages: 1. This invention adopts a dual chip removal mode that combines brush cleaning and high-pressure pneumatic blowing with an air cylinder, and is equipped with a limit switch and a directional chip removal structure with a guide flap. It can thoroughly remove chips from the surface of the lower die cavity and deep holes, effectively avoiding problems such as scratches on stamped parts and die wear caused by chip residue, and significantly improving the quality of stamped products and the service life of the die.

[0027] 2. This invention achieves workpiece ejection, automatic feeding and unloading, and automatic chip removal through the opening and closing motion of the upper and lower dies. It requires no manual intervention or external independent power, and synchronizes the ejection, feeding, and chip removal actions with the continuous stamping stroke. This greatly improves the automation level and operational continuity of automotive parts stamping production, effectively reduces the intensity of manual operation, and avoids problems such as workpiece jamming and poor feeding. Attached Figure Description

[0028] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the lower mold structure of the present invention; Figure 3 This is a schematic diagram of the cleaning brush structure of the present invention; Figure 4 This is a schematic diagram of the upper mold structure of the present invention; Figure 5 for Figure 3 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view of point B in the middle; Figure 7 This is a schematic diagram of the flow guide flap structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the air cylinder of the present invention; Figure 9 This is a schematic diagram of the internal structure of the mounting cylinder of the present invention; Figure 10 This is a schematic diagram of the drive rack structure of the present invention.

[0029] Among them, 1. Upper mold; 2. Lower mold; 31. Guide slide; 32. Electromagnetic suction block; 33. Mounting bracket; 34. Cleaning brush; 41. Drive rack 1; 42. Connecting bracket; 43. Drive gear 1; 44. Connecting shaft; 45. Bevel gear; 46. Guide vane; 47. Mounting shaft; 51. Mounting cylinder; 52. Movable rod; 53. Limit switch; 61. Air cylinder; 62. Jet nozzle; 63. Inlet pipe; 64. Piston rod; 65. Drive piston; 71. Drive rack two; 72. Mounting base; 73. Drive gear two; 74. Drive screw; 75. Sliding drive block; 76. Push rod. Detailed Implementation

[0030] The technical solutions in 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.

[0031] Please see the appendix Figure 1 - Appendix Figure 10 This invention provides an automatic chip-removing continuous stamping die for automotive parts, mainly comprising an upper die 1 and a lower die 2. The upper die 1 is fixedly installed on the sliding worktable of the press, located directly above the lower die 2, and can perform closing stamping motion and opening / resetting motion relative to the lower die 2 in the vertical direction under the drive of an external press. Two drive racks 71 extending vertically are symmetrically fixed on the left and right outer sides of the upper die 1. The drive racks 71 rise and fall synchronously with the upper die 1, converting the vertical linear reciprocating motion into rotational motion, so that each actuator keeps synchronized with the stamping stroke.

[0032] The lower die 2 is fixedly mounted on the press worktable, serving as the mounting base for the stamping and chip removal mechanism. Two mounting seats 72 are fixedly installed on one side of the top of the lower die 2, corresponding to the position of the second drive rack 71. A second drive gear 73 is rotatably mounted inside the mounting seats 72 via rolling bearings, and the second drive gear 73 and the second drive rack 71 are always in meshing transmission. A drive screw 74 is fixedly connected to the coaxial end of the second drive gear 73. The drive screw 74 is supported inside the lower die 2 by bearings and can rotate synchronously with the second drive gear 73. A sliding drive block 75 is threaded onto the external part of the drive screw 74. The bottom end of the sliding drive block 75 forms a horizontal sliding fit with the inner wall of the lower die 2, allowing the sliding drive block 75 to move stably in a horizontal linear direction under the drive of the drive screw 74.

[0033] Specifically, when the press drives the upper mold 1 to complete the stamping and open the mold upward, the drive rack 71 on the outer side of the upper mold 1 moves upward accordingly. Through continuous meshing transmission, the drive gear 73 in the mounting base 72 rotates. The drive gear 73 then drives the coaxially arranged drive screw 74 to rotate synchronously. The bottom end of the sliding drive block 75 maintains a horizontal sliding constraint with the inner wall of the lower mold 2, so that the rotational motion of the drive screw 74 is converted into a smooth linear motion of the sliding drive block 75 in the horizontal direction.

[0034] A vertical through hole is provided on the top of the lower mold 2 corresponding to the stamping station. A guide bushing is fixedly installed in the vertical through hole. The guide bushing is made of wear-resistant metal material to reduce sliding friction and ensure the coaxiality of the ejector rod 76. The ejector rod 76 is slidably installed inside the guide bushing. A return spring is sleeved on the outside of the ejector rod 76. The upper end of the return spring abuts against the lower end of the guide bushing, and the lower end abuts against the stepped surface of the ejector rod 76 to provide a return force. A roller is rotatably installed at the bottom end of the ejector rod 76. A lifting ramp matching the roller is provided on the top of the sliding drive block 75. The roller and the lifting ramp form a rolling engagement, which can smoothly convert the horizontal movement of the sliding drive block 75 into the vertical lifting movement of the ejector rod 76.

[0035] Specifically, the vertical through hole set in the stamping station of the lower die 2 is used to provide a vertical movement channel for the ejector rod 76. The wear-resistant metal guide bushing fixed in the hole can reduce the frictional resistance of the ejector rod 76 when it rises and falls and ensure its coaxiality. When the sliding drive block 75 moves horizontally, the lifting inclined surface at its top forms a rolling fit with the rotatable roller at the bottom of the ejector rod 76. The horizontal linear motion of the sliding drive block 75 is smoothly converted into the vertical upward lifting motion of the ejector rod 76 by the change in the height of the inclined surface, thereby ejecting the stamped workpiece from the die station. After the sliding drive block 75 is reset, the ejector rod 76 falls back to the initial position under the action of the reset spring, completing one ejection and reset cycle.

[0036] A connecting frame 42 is fixedly connected to the outer side of the sliding drive block 75. The connecting frame 42 moves horizontally synchronously with the sliding drive block 75 to drive the chip removal triggering mechanism. A mounting cylinder 51 is fixedly installed on one side of the top of the lower mold 2. A limit switch 53 is installed inside the mounting cylinder 51. A transverse through hole is opened on the side wall of the mounting cylinder 51, and a movable rod 52 is horizontally slidably connected inside the transverse through hole. One end of the movable rod 52 is fixedly connected to the connecting frame 42, and the other end can extend into the mounting cylinder 51 to form a triggering engagement with the limit switch 53.

[0037] Specifically, during the horizontal movement of the sliding drive block 75, it will synchronously drive the outer fixed connecting frame 42 to make horizontal displacement in the same direction and at the same speed. When the connecting frame 42 moves, it will push the movable rod 52 to move synchronously and slide horizontally along the transverse through hole on the side wall of the mounting cylinder 51. When the end of the movable rod 52 extends into the interior of the mounting cylinder 51 with the displacement and contacts the limit switch 53, a stable triggering engagement can be formed, converting the mechanical displacement signal into an electrical control trigger signal, thereby realizing the control of the subsequent chip removal mechanism.

[0038] Guide slides 31 extending along the width of the mold are fixedly installed on both sides of the top of the lower mold 2. The guide slides 31 provide linear guidance for the mounting frame 33, ensuring smooth and unbiased movement. At least two electromagnetic suction blocks 32 are installed on the inner side of the guide slides 31. The mounting frame 33 is fixedly connected to the outer side of one of the electromagnetic suction blocks 32. The mounting frame 33 is arranged transversely along the lower mold 2 and can reciprocate along the guide slides 31 under the drive of the electromagnetic suction blocks 32. Multiple cleaning brushes 34 are fixedly installed on the inner side of the mounting frame 33. The cleaning brushes 34 are evenly spaced along the length of the mounting frame 33. The brush bristles are made of wear-resistant and flexible material. The lower ends of the brush bristles are in close contact with the working surface of the lower mold 2, which can thoroughly clean and remove debris from the surface, corners, and steps of the mold.

[0039] Specifically, under the electromagnetic attraction of the electromagnetic block 32, the mounting frame 33 can move back and forth along the guide slide 31. At the same time, multiple cleaning brushes 34 evenly arranged on its inner side are made of wear-resistant and flexible material, which can always keep in close contact with the working surface of the lower mold 2. With the translational movement of the mounting frame 33, the working surface of the mold itself and the corners, steps and other areas where debris is easily left behind are continuously and comprehensively brushed and cleaned, effectively covering the cleaning range and improving the debris removal efficiency.

[0040] An air cylinder 61 is fixedly installed on the outer side of the lower mold 2. The air cylinder 61 adopts a sealed cylinder structure, with a drive piston 65 slidably connected inside. A piston rod 64 is fixedly connected to the top of the drive piston 65. The piston rod 64 forms a mechanical linkage with the upper mold 1 or the connecting frame 42, and is driven synchronously by the mold opening action of the upper mold 1, without the need for a separate pneumatic power supply. The outer wall of the air cylinder 61 is connected to an air jet pipe 62 and an air inlet pipe 63. Both the air jet pipe 62 and the air inlet pipe 63 are equipped with one-way valves. The two one-way valves have opposite conduction directions, so that the air cylinder 61 can only draw in external air through the air inlet pipe 63 and spray high-pressure gas in a direction through the air jet pipe 62, forming a stable one-way pneumatic chip removal circuit. The other end of the jet pipe 62 extends into the inner side of the lower mold 2 and is equipped with multiple nozzles facing the working surface of the die. The nozzles are distributed along the contour of the die and can perform high-pressure assisted blowing to clean the debris on the surface of the die, the cavity recess, and the deep hole. Together with the cleaning brush 34, it forms a dual chip cleaning structure, which can significantly improve the thoroughness of chip cleaning and avoid chip residue.

[0041] Specifically, the air cylinder 61, as a sealed cylinder structure, can form a variable-volume air pressure chamber with the drive piston 65, which is in a sliding fit with its inner wall. The piston rod 64 is linked with the upper mold 1 and can be driven to perform reciprocating linear motion synchronously when the upper mold 1 opens, thereby driving the drive piston 65 to move up and down inside the air cylinder 61 without the need for an additional pneumatic power source. When the drive piston 65 moves upward, the air pressure inside the air cylinder 61 decreases, and the external air is forced open by the pressure difference into the air inlet pipe 63. When the one-way valve enters the air cylinder 61 and drives the piston 65 downward, the air pressure inside the air cylinder 61 increases. Under the action of pressure, the air closes the one-way valve in the air inlet pipe 63 and opens the one-way valve in the jet pipe 62, forming a one-way stable pneumatic chip removal circuit. The high-pressure gas is directionally ejected from the nozzles arranged along the contour of the die cavity at the end of the jet pipe 62, which assists in blowing away the debris on the surface of the die cavity, the cavity recess, and the deep hole. It works in conjunction with the cleaning brush 34 to form a double chip removal structure, improving the comprehensiveness of chip removal and reducing chip residue.

[0042] A horizontally extending drive rack 41 is fixedly connected to the outer side of the connecting frame 42. The drive rack 41 moves synchronously with the connecting frame 42. A drive gear 43 is meshed with the outer side of the drive rack 41, and a connecting shaft 44 is fixedly connected to the end of the drive gear 43. A mounting shaft 47 is rotatably mounted on one side of the lower mold 2. A guide vane 46 is fixedly connected to the outer side of the mounting shaft 47. The guide vane 46 is used to guide the workpiece after stamping and to collect and discharge the debris, preventing the workpiece and debris from mixing. Bevel gears 45 are fixedly provided at the corresponding ends of the connecting shaft 44 and the mounting shaft 47. The two bevel gears 45 mesh with each other to realize vertical reversing transmission, which can convert the horizontal linear motion of the connecting frame 42 into the rotational flipping motion of the guide vane 46, so that the removed debris and the ejected workpiece are smoothly discharged in a set direction, avoiding debris accumulation and workpiece jamming, realizing the separation and guidance of workpiece and debris, and improving the smoothness of continuous production.

[0043] Specifically, when the connecting frame 42 moves horizontally, it synchronously drives the drive rack 41 to move in the same direction. The drive rack 41 drives the drive gear 43 to rotate through meshing transmission, which in turn drives the connecting shaft 44 to rotate synchronously. The connecting shaft 44 and the mounting shaft 47 achieve vertical reversal transmission through the meshing bevel gear 45, converting the horizontal rotational motion into the vertical rotational motion of the mounting shaft 47. This causes the guide flap 46 on the mounting shaft 47 to rotate and flip, so that the ejected workpiece and the cleaned debris are smoothly discharged along the guide surface of the guide flap 46, avoiding the mixing, accumulation or jamming of workpiece and debris, realizing separation and guidance, and ensuring the smoothness of continuous stamping production.

[0044] The guide flap 46 maintains a vertical posture when the mold is closed, mainly to ensure that the working surface of the lower mold 2 can maintain a complete and continuous installation shape, without occupying the space required for mold closure. This prevents the stamping sheet from failing to fall smoothly into the preset working surface of the mold core due to the flap protrusion. At the same time, it prevents the workpiece from falling out of the mold core of the lower mold 2 or shifting due to the tilt of the flap before ejection, ensuring the accuracy of stamping positioning and the integrity of the mold structure during mold closure. After the mold is opened and before the workpiece ejection and chip removal are completed, the guide flap 46 flips to an inclined state. At this time, the mold no longer needs to close. The inclined guide surface can guide the ejected workpiece to slide down in an orderly manner and collect the debris that has been brushed and blown down, realizing the separation and conveying of the workpiece and debris, and preventing debris from falling back and adhering to the die or the workpiece from getting stuck around the mold.

[0045] Working principle: The upper mold 1 moves vertically downward under the drive of the press and closes with the lower mold 2 to complete the continuous stamping and trimming of the automotive parts. At this time, the metal chips generated during the stamping process fall and adhere to the working surface of the die, the groove and the inside of the hole of the lower mold 2. After the stamping process is completed during the mold opening, reset, and mechanical ejection stages, the upper mold 1 moves upward to perform the mold opening and reset. The second drive rack 71 moves upward and drives the second drive gear 73 to rotate. The drive screw 74, coaxially fixed with the second drive gear 73, rotates synchronously. At this time, the sliding drive block 75 moves horizontally along the inner wall of the lower mold 2. The lifting ramp at the top of the sliding drive block 75 and the roller at the bottom of the ejector rod 76 form a rolling engagement, smoothly converting the horizontal sliding motion into a vertical upward thrust. This causes the ejector rod 76 to extend upward along the vertical through hole, reliably lifting the formed workpiece from the cavity of the lower mold 2, preventing the workpiece from jamming. While the sliding drive block 75 moves horizontally, it also drives the outer connecting frame 42 to move synchronously. The connecting frame 42 pushes the movable rod 52 to slide smoothly along the transverse through hole of the mounting cylinder 51. When the end of the movable rod 52 reaches the preset position, it will contact the limit switch 53. At this time, the limit switch 53 outputs an electrical control signal to control the electromagnetic suction block 32 to be energized. Under the action of electromagnetic force, the electromagnetic suction block 32 drives the mounting frame 33 to move directionally along the guide slide 31, so that the cleaning brushes 34 evenly arranged on the mounting frame 33 slide close to the working surface of the lower mold 2 cavity to remove surface debris and corner residue. At the same time, the mounting frame 33 smoothly pushes the lifted workpiece to the guide flow area. As the upper mold 1 moves upward, it simultaneously transmits power to the piston rod 64, driving the drive piston 65 to perform a sealed reciprocating motion inside the air cylinder 61. Under the flow-limiting effect of the reverse-direction one-way valve inside the jet pipe 62 and the air inlet pipe 63, a stable one-way pneumatic circuit is formed inside the air cylinder 61: outside air is drawn into the air cylinder 61 through the air inlet pipe 63 and pressurized. The pressurized gas is then directionally ejected from multiple nozzles through the jet pipe 62. The high-pressure airflow directly acts on the surface of the lower mold 2 cavity, the recessed areas of the cavity, and the depth of the holes, directionally blowing the attached debris that is difficult to remove by mechanical brushing onto the guide plate set on one side of the lower mold 2. During the movement of the connecting frame 42, it simultaneously drives the drive rack 41 to move horizontally. The drive rack 41 meshes with the drive gear 43, driving the connecting shaft 44 to rotate. The mounting shaft 47 achieves vertical reversal transmission through two sets of meshing bevel gears 45, driving the guide plate 46 to rotate to the optimal guide angle. The debris that is brushed off and blown off is discharged in a concentrated manner along the guide flap 46. The ejected workpiece slides smoothly down to the unloading area along the guide flap 46, realizing the separation and guidance of the workpiece and debris, and avoiding the accumulation of debris. Subsequently, when the upper mold 1 completes the mold opening and moves down again to prepare for mold closing, the drive rack 2 71 moves in the reverse direction, driving the drive gear 2 73 and drive screw 74 to reverse, and the sliding drive block 75, connecting frame 42 and movable rod 52 are synchronously reset. The ejector rod 76 falls back to the initial position under the action of the reset spring to prepare for the next operation.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous stamping die for automotive parts with automatic chip removal, characterized in that, It includes an upper mold (1) and a lower mold (2). The upper mold (1) is located directly above the lower mold (2) and can perform mold closing and mold opening and resetting movements relative to the lower mold (2) in the vertical direction. Two drive racks (71) extending vertically are symmetrically fixed on the outer side of the upper mold (1). Two mounting seats (72) are fixed on one side of the top of the lower mold (2) at the position corresponding to the drive racks (71). A drive gear (73) is movably connected inside the mounting seat (72) through a bearing. A drive screw (74) is fixedly connected to the outer side of the drive gear (73). A sliding drive block (75) is threaded onto the outer side of the drive screw (74). The lower mold (2) has a vertical through hole at the top corresponding to the stamping station. A push rod (76) is installed in the vertical through hole and can slide up and down. The lower end of the push rod (76) is in transmission cooperation with the sliding drive block (75). A connecting frame (42) is fixedly connected to the outside of the sliding drive block (75). An installation cylinder (51) is fixedly installed on one side of the top of the lower mold (2). A limit switch (53) is installed inside the installation cylinder (51). A horizontal through hole is opened on the side wall of the installation cylinder (51). A movable rod (52) is horizontally slidably connected in the horizontal through hole. One end of the movable rod (52) is fixedly connected to the connecting frame (42), and the other end can extend into the installation cylinder (51) to form a trigger cooperation with the limit switch (53).

2. The automatic chip removal continuous stamping die for automotive parts according to claim 1, characterized in that, The top two sides of the lower mold (2) are fixedly provided with guide slides (31) extending along the width direction of the mold. Two electromagnetic suction blocks (32) are installed on the inner side of the guide slides (31). An installation frame (33) is fixedly connected to the outer side of one of the electromagnetic suction blocks (32). The installation frame (33) is arranged in the transverse direction of the lower mold (2). Multiple cleaning brushes (34) are fixedly installed on the inner side of the installation frame (33). The working surface of the cleaning brush (34) is closely attached to the top surface of the concave mold of the lower mold (2) and is used to brush and clean the working surface of the concave mold.

3. The automatic chip removal continuous stamping die for automotive parts according to claim 2, characterized in that, An air cylinder (61) is fixedly installed on the outer side of the lower mold (2). A drive piston (65) is slidably connected inside the air cylinder (61). A piston rod (64) is fixedly connected to the top of the drive piston (65). An air jet pipe (62) and an air inlet pipe (63) are respectively connected to the outer wall of the air cylinder (61). The other end of the air jet pipe (62) extends into the inner side of the lower mold (2) and is provided with multiple nozzles facing the working surface of the die. The nozzles are used to perform high-pressure auxiliary blowing of residual debris on the surface of the die and in the holes.

4. The automatic chip removal continuous stamping die for automotive parts according to claim 3, characterized in that, Both the jet pipe (62) and the air inlet pipe (63) are equipped with one-way valves. The two one-way valves are in opposite directions, so that the air cylinder (61) can only draw in external air through the air inlet pipe (63) and spray high-pressure gas in a directional manner through the jet pipe (62).

5. The automatic chip removal continuous stamping die for automotive parts according to claim 1, characterized in that, A drive rack (41) extending horizontally is fixedly connected to the outer side of the connecting frame (42), and a drive gear (43) is meshed with the outer side of the drive rack (41); a connecting shaft (44) is fixedly connected to the end of the drive gear (43); an mounting shaft (47) is rotatably mounted on one side of the lower mold (2), and a guide flap (46) is fixedly connected to the outer side of the mounting shaft (47). The guide flap (46) is used for guiding the workpiece after stamping and for the concentrated discharge of debris.

6. The automatic chip removal continuous stamping die for automotive parts according to claim 5, characterized in that, Both the connecting shaft (44) and the mounting shaft (47) are fixedly provided with bevel gears (45), and the two bevel gears (45) mesh with each other.

7. The automatic chip removal continuous stamping die for automotive parts according to claim 1, characterized in that, The bottom end of the top rod (76) is rotatably equipped with a roller, and the top of the sliding drive block (75) is provided with a lifting slope adapted to the roller, and the roller and the lifting slope are in rolling cooperation.

8. The automatic chip removal continuous stamping die for automotive parts according to claim 1, characterized in that, A guide bushing is provided at the top of the lower mold (2) corresponding to the vertical through hole of the push rod (76). The guide bushing is sleeved on the outside of the push rod (76) and slides in cooperation with the push rod (76). A return spring is sleeved on the outside of the push rod (76).

9. The automatic chip removal continuous stamping die for automotive parts according to claim 1, characterized in that, The second drive gear (73) meshes with the second drive rack (71), and the bottom end of the sliding drive block (75) is slidably connected to the inner wall of the lower mold (2).

10. The automatic chip removal continuous stamping die for automotive parts according to claim 2, characterized in that, The movable rod (52) slides and seals with the transverse through hole of the mounting cylinder (51). The limit switch (53) is a contact-type trigger switch. The limit switch (53) is electrically connected to the electromagnetic suction block (32). The trigger signal is used to control the electromagnetic suction block (32) to turn on and off.

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