A punching die for automotive parts

Abstract

This utility model discloses a punching die for automotive parts, relating to the field of automotive parts processing technology. It includes a base, a workpiece conveying unit, and a punching unit. Through an arched top frame design, the five columnar mounting seats are arranged in an arc shape, ensuring that the hydraulic cylinders and punches at each position are vertically aligned with the punching points on the curved surface of the automotive parts. By ensuring the punches are perpendicular, dimensional deviations or increased burrs in the punched holes are avoided. Furthermore, the arched frame is easy to disassemble; by replacing different top frames, the punching assembly can be installed in different positions to produce different types of automotive parts. It also features a reliable workpiece conveying unit, capable of effectively installing and fixing curved workpieces such as automotive bumpers, and moving the workpiece from front to back to sequentially complete loading, punching, and unloading operations, effectively improving automation and processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically to a punching die for automotive parts. Background Technology

[0002] In automotive parts manufacturing, punching is a widely used and crucial process. From a manufacturing perspective, it is a key step in the production of automotive stamped parts. Specifically, punching is used to create circular holes in structural components such as body structures, doors, roofs, and side panels to facilitate the installation of mechanical parts and electrical components.

[0003] In existing technology, when punching curved workpieces such as car bumpers, the presence of the curved surface will cause an angle between the punch and the punching point if the punching direction is not adjusted. This results in the punch acting obliquely on the workpiece, which in turn leads to dimensional deviations or increased burrs in the punched holes. Over time, this can also damage the mold and the punch. To address this, we propose a punching mold for automotive parts. Utility Model Content

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide a punching die for automotive parts. Through an arched top frame design, five columnar mounting seats are arranged in an arc shape, allowing the hydraulic cylinders and punches at each position to be vertically aligned with the punching points on the curved surface of the automotive parts. The angle of the hydraulic cylinders can be precisely calibrated to ensure the punch acts accurately and vertically at the punching point. By ensuring the punch's vertical direction, dimensional deviations or increased burrs in the punched holes are avoided. Furthermore, the arched frame is easy to disassemble; by replacing different top frames, the punching components can be installed in different positions to produce different types of automotive parts. It also features a reliable workpiece transport unit that can effectively install and fix curved workpieces such as automotive bumpers and move the workpiece from front to back, sequentially completing loading, punching, and unloading operations, effectively improving automation and processing efficiency. A receiving groove is provided on the upper side of the mounting frame to collect small pieces that fall during punching, effectively solving the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a punching die for automotive parts, comprising a base, a workpiece conveying unit, and a punching processing unit;

[0006] Base: It is a square plate with two longitudinal mounting slots on the top. Vertical columns are fixedly connected to the middle of the left and right sides of the base.

[0007] Workpiece conveying unit: mounted on the upper side of the base;

[0008] The punching unit includes an arched frame, column mounting bases, a second hydraulic cylinder, end shafts, fixing bolts, and a punch. The arched frame is fixedly mounted on the upper sides of two columns. Horizontal blocks are fixedly connected to the upper ends of the columns and to the left and right sides of the arched frame. The horizontal blocks at adjacent ends are fixedly connected by bolts. Five column mounting bases are equidistantly embedded inside the arc-shaped section of the arched frame. End shafts are fixedly connected to the front and rear ends of the column mounting bases, and the column mounting bases are rotatably connected to the arched frame through the end shafts. A second hydraulic cylinder is embedded inside the column mounting base. The direction of the extension rod of the second hydraulic cylinder is perpendicular to the central axis of the column mounting base. The extension rods of the second hydraulic cylinder extend into the inner side of the column mounting base, and a punch is fixedly connected to the end. The lower edge of the punch has a chamfered structure.

[0009] The arched frame allows the five column mounting seats to be distributed in an arc shape, ensuring that the hydraulic cylinders and punches at each position are vertically aligned with the punching points on the curved surface of the automotive parts. This prevents dimensional deviations or increased burrs in the punched holes. Furthermore, under the action of the end pivot, the column mounting seats can drive the hydraulic cylinders to make fine-tuning adjustments in angle. The fixing bolts secure the finely adjusted column mounting seats by clamping the end pivot. The arched frame is also easy to disassemble, allowing the punching components to be installed in different positions by replacing different top frames to produce different types of automotive parts.

[0010] Furthermore, the punching unit also includes a laser perpendicularity gauge and a second controller. A laser perpendicularity gauge is installed at the lower front position of each cylindrical mounting base, parallel to the extension rod of the second hydraulic cylinder. The second controller is installed on the outward-facing side of the right column. The input end of each second hydraulic cylinder is electrically connected to the output end of an external power supply through the second controller. The laser perpendicularity gauge emits light, and the operator accurately determines whether the stroke direction of the punch is perfectly perpendicular to the tangent of the opening point on the workpiece by observing whether the light spot on the workpiece is perfectly circular and whether there is a reflected light spot on the inner arc surface of the arched frame. The second controller is used to control the synchronous operation of each second hydraulic cylinder to improve the efficiency of the punching process.

[0011] Furthermore, the workpiece conveying unit includes a ball screw, connecting columns, a mounting crossbeam, and inner slots. A longitudinal ball screw is installed inside each of the two mounting slots on the upper left and right sides of the base. Inner slots are formed on the inner walls of the mounting slots, and locking blocks are fixedly connected to both sides of the nut portion of the ball screw. These locking blocks are inserted into and slidably connected to the inner slots. A connecting column is fixedly connected to the upper end of the nut portion of the ball screw, and the mounting crossbeam is fixedly connected to the upper ends of the two connecting columns. The ball screw drives the upper mounting crossbeam to move via the connecting columns. The inner slots engage with the locking blocks on both sides of the nut portion of the ball screw, ensuring smooth sliding of the nut and thus driving the mounting crossbeam to slide smoothly longitudinally. When the mounting crossbeam is in the front position, loading operations can be performed. The mounting crossbeam drags the automotive parts under the arched frame, where punching is performed. The mounting crossbeam then drives the automotive parts to continue moving backward, and unloading can then be performed at the rear of the device, thereby improving the automation level of the device and effectively increasing production efficiency.

[0012] Furthermore, the workpiece conveying unit also includes a hydraulic cylinder, an electromagnet, and a controller. A row of vertical hydraulic cylinders is installed on both the front and rear sides of the upper end of the mounting frame, with the middle hydraulic cylinder higher than the side cylinders. An electromagnet is fixedly installed at the upper end of each hydraulic cylinder. The controller is installed at the front end of the mounting frame. The input ends of the ball screw, hydraulic cylinders, and electromagnets are all electrically connected to the output end of an external power supply through the controller. The hydraulic cylinder drives the electromagnet to the underside of the automotive part. When the electromagnet is energized, it can attract and fix the automotive part. The middle of the two rows of hydraulic cylinders is higher than the sides, effectively handling curved structures such as automotive bumpers. The controller controls the ball screw, hydraulic cylinders, and electromagnets to work sequentially according to the programmed settings.

[0013] Furthermore, the workpiece conveying unit also includes a receiving groove and a discharge port. A transverse receiving groove is provided at the middle of the upper end of the mounting frame, and a downward-sloping discharge port is provided on the right side of the receiving groove. The receiving groove is used to receive round material blocks that fall during punching, and the downward-sloping discharge port on the right side facilitates the outward discharge of the round material blocks.

[0014] Furthermore, the workpiece conveying unit also includes a scraper, a pull rod, and a hand lever. The scraper is slidably connected inside the receiving trough. The left end of the pull rod is fixedly connected to the right side of the scraper, and the right side of the pull rod extends outward, with a hand lever fixedly connected to its end. When the hand lever is pulled outward, the pull rod can drive the scraper to slide to the right, thereby gathering the material blocks received inside the receiving trough to the right and discharging them outward through the discharge port.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This automotive parts punching die has the following advantages:

[0016] 1. The arched top frame design allows the five column mounting bases to be distributed in an arc shape, ensuring that the hydraulic cylinders and punches at each position can be vertically aligned with the punching points on the curved surface of the automotive parts. It also allows for precise calibration of the angle of the hydraulic cylinders, ensuring that the punches act precisely and vertically at the punching points. By ensuring the punches are vertical, it avoids dimensional deviations or increased burrs in the punched holes. Furthermore, the arched frame is easy to disassemble; by replacing different top frames, the punching components can be installed in different positions to produce different types of automotive parts.

[0017] 2. It has a reliable workpiece transport unit, which can effectively install and fix curved workpieces such as car bumpers, and can drive the workpiece to move from front to back to complete the loading, punching and unloading operations in sequence, effectively improving the degree of automation and processing efficiency; and a receiving groove is opened on the upper side of the mounting frame to hold small pieces of material that fall during punching.

[0018] 3. This utility model, through its arched top frame design, allows the five columnar mounting seats to be distributed in an arc shape, ensuring that the hydraulic cylinders and punches at each position are vertically aligned with the punching points on the curved surface of the automotive parts. It also allows for precise calibration of the angle of the hydraulic cylinders, ensuring that the punches act precisely and vertically at the punching points. By ensuring the punches are vertical, it avoids dimensional deviations or increased burrs in the punched holes. Furthermore, the arched frame is easy to disassemble; by replacing different top frames, the punching components can be installed in different positions to produce different types of automotive parts. It also features a reliable workpiece transport unit, capable of effectively installing and fixing curved workpieces such as automotive bumpers, and moving the workpieces from front to back to sequentially complete loading, punching, and unloading operations, effectively improving automation and processing efficiency. Additionally, a receiving groove is provided on the upper side of the mounting frame to collect small pieces that fall during punching. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the upper right side structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the lower right side structure of this utility model.

[0022] In the diagram: 1. Base, 2. Column, 3. Workpiece conveying unit, 31. Ball screw, 32. Connecting column, 33. Mounting crossbeam, 34. Hydraulic cylinder I, 35. Electromagnet, 36. Inner groove, 37. Receiving groove, 38. Scraper, 39. Pull rod, 310. Unloading port, 311. Hand lever, 312. Controller I, 4. Punching processing unit, 41. Arch frame, 42. Column mounting base, 43. Hydraulic cylinder II, 44. End shaft, 45. Fixing bolt, 46. Punch, 47. Laser verticality gauge, 48. Controller II. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-3 This embodiment provides a technical solution: a punching die for automotive parts, including a base 1, a workpiece conveying unit 3, and a punching processing unit 4;

[0025] Base 1: It is a square plate with two longitudinal mounting slots on the top. Vertical columns 2 are fixedly connected to the middle of the left and right sides of the base 1.

[0026] Workpiece conveying unit 3: installed on the upper side of base 1;

[0027] The punching unit 4 includes an arched frame 41, columnar mounting bases 42, a second hydraulic cylinder 43, an end shaft 44, fixing bolts 45, and a punch 46. The arched frame 41 is fixedly mounted on the upper side of two left and right columns 2. Horizontal blocks are fixedly connected to the upper end of the columns 2 and the left and right sides of the arched frame 41. The horizontal blocks at adjacent ends are fixedly connected by bolts. Five columnar mounting bases 42 are equidistantly embedded in the arc-shaped section of the arched frame 41. The front and rear ends of the columnar mounting bases 42 are fixedly connected to the end shafts 44. The columnar mounting bases 42 are rotatably connected to the arched frame 41 through the end shafts 44. A second hydraulic cylinder 43 is embedded in the columnar mounting base 42. The direction of the extension rod of the second hydraulic cylinder 43 is perpendicular to the central axis of the columnar mounting base 42. The extension rods of the second hydraulic cylinder 43 extend into the inner side of the columnar mounting base 42 and are fixedly connected to the end of the punch 46. The lower edge of the punch 46 has a chamfered structure.

[0028] The arched frame 41 enables the five columnar mounting seats 42 to be distributed in an arc shape, so that the hydraulic cylinders 43 and punches 46 at each position can be vertically aligned with the punching points on the curved surface of the automotive parts, thereby avoiding dimensional deviations or increased burrs in the punched holes. Under the action of the end pivot 44, the columnar mounting seats 42 can drive the hydraulic cylinders 43 to make fine-tuning adjustments in angle. The fixing bolts 45 fix the finely adjusted columnar mounting seats 42 by clamping the end pivot 44. The arched frame 41 is easy to disassemble, and the punching assembly can be installed in different positions by replacing different top frames to produce different types of automotive parts.

[0029] The punching unit 4 also includes a laser perpendicularity gauge 47 and a controller 48. A laser perpendicularity gauge 47 is installed at the lower front position of each cylindrical mounting base 42. The laser perpendicularity gauge 47 is parallel to the extension rod of the hydraulic cylinder 43. The controller 48 is installed on the outward side of the right column 2. The input end of each hydraulic cylinder 43 is electrically connected to the output end of an external power supply through the controller 48. The laser perpendicularity gauge 47 emits light. The operator accurately determines whether the stroke direction of the punch is perfectly perpendicular to the tangent of the opening point on the workpiece by observing whether the light spot on the workpiece is perfectly circular and whether there is a reflected light spot on the inner arc surface of the arched frame 41. The controller 48 is used to control the synchronous operation of each hydraulic cylinder 43 to improve the efficiency of the punching process.

[0030] The workpiece conveying unit 3 includes a ball screw 31, a connecting column 32, a mounting crossbeam 33, and an inner slot 36. A longitudinal ball screw 31 is installed inside the two mounting slots on the upper left and right sides of the base 1. The inner walls of the mounting slots are provided with inner slots 36 facing inward. The nut part of the ball screw 31 is fixedly connected to both sides with a locking block. The locking block is inserted into and slidably connected in the inner slot 36. A connecting column 32 is fixedly connected to the upper end of the nut part of the ball screw 31. The mounting crossbeam 33 is fixedly connected to the upper end of the two connecting columns 32. The ball screw 31 drives the upper mounting frame 33 to move via the connecting column 32. The inner groove 36 engages with the two side locking blocks of the nut part of the ball screw 31 to ensure the smooth sliding of the nut, thereby driving the mounting frame 33 to slide smoothly longitudinally. When the mounting frame 33 is in the front position, loading operations can be performed. The mounting frame 33 drags the automotive parts under the arch frame 41 and performs punching processing at the arch frame 41. Then, the mounting frame 33 drives the automotive parts to continue moving backward, and unloading can be performed at the rear of the device, thereby improving the automation level of the device and effectively improving production efficiency.

[0031] The workpiece conveying unit 3 also includes hydraulic cylinders 34, electromagnets 35, and a controller 312. A row of vertical hydraulic cylinders 34 is installed on both the front and rear sides of the upper end of the mounting frame 33. The hydraulic cylinders 34 in the middle are higher than those on the sides. An electromagnet 35 is fixedly installed on the upper end of each hydraulic cylinder 34. The controller 312 is installed at the front end of the mounting frame 33. The input ends of the ball screw 31, hydraulic cylinders 34, and electromagnets 35 are all electrically connected to the output end of an external power supply through the controller 312. The hydraulic cylinders 34 drive the electromagnets 35 to the lower side of the automotive parts. When the electromagnets 35 are energized, they can attract and fix the automotive parts. The middle row of hydraulic cylinders 34 is higher than the sides, effectively handling curved structures such as automotive bumpers. The controller 312 controls the ball screw 31, hydraulic cylinders 34, and electromagnets 35 to work sequentially according to the programmed settings.

[0032] The workpiece conveying unit 3 also includes a receiving groove 37 and a discharge port 310. A transverse receiving groove 37 is provided in the middle of the upper end of the mounting frame 33, and a downward-sloping discharge port 310 is provided on the right side of the receiving groove 37. The receiving groove 37 is used to receive round blocks that fall during punching, and the downward-sloping discharge port 310 on the right side facilitates the outward discharge of the round blocks.

[0033] The workpiece conveying unit 3 also includes a scraper 38, a pull rod 39, and a hand lever 311. The scraper 38 is slidably connected inside the receiving trough 37. The left end of the pull rod 39 is fixedly connected to the right side of the scraper 38, and the right side of the pull rod 39 extends outward, with the hand lever 311 fixedly connected to its end. When the hand lever 311 is pulled outward, the pull rod 39 can drive the scraper 38 to slide to the right, thereby gathering the material blocks received inside the receiving trough 37 to the right and discharging them outward through the discharge port 310.

[0034] The working principle of the punching die for automotive parts provided by this utility model is as follows: This punching die has a reliable workpiece conveying unit 3, which can effectively install and fix curved workpieces such as automotive bumpers, and can drive the workpiece to move from front to back, sequentially completing the loading, punching and unloading operations, effectively improving the degree of automation and processing efficiency: A longitudinal ball screw 31 is installed inside the two mounting slots on the upper left and right sides of the base 1. The inner walls of the mounting slots are provided with inward-facing inner slots 36. The nut part of the ball screw 31 is fixedly connected to both sides with locking blocks. The ball screw 31 drives the upper mounting crossbeam 33 to move through the connecting column 32. The inner slots 36 engage with the locking blocks on both sides of the nut part of the ball screw 31, which can ensure the smooth sliding of the nut, thereby driving the mounting crossbeam 33 to move. The horizontal frame 33 slides smoothly longitudinally. When the mounting frame 33 is in front, loading can be performed. The mounting frame 33 drags the car parts under the arch frame 41 and punches holes in the arch frame 41. Then the mounting frame 33 drives the car parts to continue moving backward, and unloading can be performed at the rear of the device, thereby improving the automation level of the device and effectively improving production efficiency. The hydraulic cylinder 34 is used to drive the electromagnet 35 to the underside of the car parts. When the electromagnet 35 is energized, it can attract and fix the car parts. The hydraulic cylinders 34 in the front and rear rows are higher in the middle and lower on both sides, which can effectively handle parts with curved structures such as car bumpers. The controller 312 is used to control the ball screw 31, hydraulic cylinder 34 and electromagnet 35 to work in sequence according to the program settings. This punching die also features a reliable punching unit 4. Through an arched top frame design, five columnar mounting bases 42 are arranged in an arc shape, allowing the hydraulic cylinders 43 and punches 46 at each position to be vertically aligned with the punching points on the curved surface of the automotive parts. The angle of the hydraulic cylinders 43 can be precisely calibrated to ensure that the punches 46 act precisely and vertically at the punching points. By ensuring the punches 46 are vertical, dimensional deviations or increased burrs in the punched holes are avoided. Furthermore, the arched frame 41 is easy to disassemble; by replacing different top frames, the punching assembly can be installed in different positions to produce different types of automotive parts. A laser perpendicularity gauge 47 emits light, and the operator can accurately determine whether the punch's stroke direction is perfectly perpendicular to the tangent of the punching point on the workpiece based on whether the light spot on the workpiece is perfectly circular and whether there are reflected light spots on the inner arc surface of the arched frame 41. A controller 48 is used to control the synchronous operation of each hydraulic cylinder 43 to improve the efficiency of the punching process. In addition, the receiving groove 37 is used to receive round material blocks that fall during punching. The slanted discharge port 310 on the right side facilitates the outward discharge of round material blocks. When the hand lever 311 is pulled outward, the pull rod 39 can drive the scraper 38 to slide to the right, thereby gathering the material blocks received inside the receiving groove 37 to the right and discharging them outward through the discharge port 310.

[0035] It is worth noting that the controller 2 48 disclosed in the above embodiments controls the operation of each hydraulic cylinder 2 43 using methods commonly used in the prior art, and the controller 1 312 controls the operation of the ball screw 31, hydraulic cylinder 1 34 and electromagnet 35 using methods commonly used in the prior art.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A punching die for automotive parts, characterized in that: It includes a base (1), a workpiece conveying unit (3), and a punching processing unit (4). Base (1): It is a square plate with two longitudinal mounting slots on the upper end. Vertical columns (2) are fixedly connected to the middle of the left and right sides of the base (1). Workpiece conveying unit (3): installed on the upper side of base (1); Punching processing unit (4): includes an arched frame (41), column mounting bases (42), hydraulic cylinder two (43), end shaft (44), fixing bolts (45), and punch (46). The arched frame (41) is fixedly mounted on the upper side of two left and right columns (2). Horizontal blocks are fixedly connected to the upper end of the columns (2) and the left and right sides of the arched frame (41). The horizontal blocks at adjacent ends are fixedly connected by bolts. Five column mounting bases (42) are equidistantly embedded in the arc section of the arched frame (41). The front and rear ends of the cylindrical mounting base (42) are fixedly connected to the end rotating shaft (44). The cylindrical mounting base (42) is rotatably connected to the arch frame (41) through the end rotating shaft (44). A hydraulic cylinder two (43) is embedded in the interior of the cylindrical mounting base (42). The direction of the extension rod of the hydraulic cylinder two (43) is perpendicular to the central axis of the cylindrical mounting base (42). The extension rods of the hydraulic cylinder two (43) extend to the inner side of the cylindrical mounting base (42), and a punch (46) is fixedly connected to the end. The lower edge of the punch (46) is chamfered.

2. The punching die for automotive parts according to claim 1, characterized in that: The punching unit (4) also includes a laser verticality gauge (47) and a controller (48). A laser verticality gauge (47) is installed at the lower front position of each column mounting base (42). The laser verticality gauge (47) is parallel to the telescopic rod of the hydraulic cylinder (43). The controller (48) is installed on the outward side of the right column (2). The input end of each hydraulic cylinder (43) is electrically connected to the output end of the external power supply through the controller (48).

3. The punching die for automotive parts according to claim 1, characterized in that: The workpiece conveying unit (3) includes a ball screw (31), a connecting column (32), a mounting frame (33), and an inner slot (36). A longitudinal ball screw (31) is installed inside the two mounting slots on the upper left and right sides of the base (1). An inner slot (36) is opened inward on the inner wall of the mounting slot. A locking block is fixedly connected to both sides of the nut part of the ball screw (31). The locking block is inserted into and slidably connected in the inner slot (36). A connecting column (32) is fixedly connected to the upper end of the nut part of the ball screw (31). The mounting frame (33) is fixedly connected to the upper end of the two connecting columns (32).

4. The punching die for automotive parts according to claim 3, characterized in that: The workpiece conveying unit (3) also includes a hydraulic cylinder (34), an electromagnet (35), and a controller (312). A row of vertical hydraulic cylinders (34) is installed on both the front and rear sides of the upper end of the mounting frame (33). The hydraulic cylinder (34) located in the middle is higher than the hydraulic cylinders (34) on both sides. An electromagnet (35) is fixedly installed on the upper end of each hydraulic cylinder (34). The controller (312) is installed at the front end of the mounting frame (33). The input ends of the ball screw (31), hydraulic cylinder (34), and electromagnet (35) are all electrically connected to the output end of the external power supply through the controller (312).

5. A punching die for automotive parts according to claim 3, characterized in that: The workpiece conveying unit (3) also includes a receiving groove (37) and a discharge port (310). A transverse receiving groove (37) is provided at the middle of the upper end of the mounting frame (33), and a downwardly oriented discharge port (310) is provided on the right side of the receiving groove (37).

6. A punching die for automotive parts according to claim 5, characterized in that: The workpiece conveying unit (3) also includes a scraper (38), a pull rod (39) and a hand lever (311). The scraper (38) is slidably connected inside the receiving groove (37). The left end of the pull rod (39) is fixedly connected to the right side of the scraper (38). The right side of the pull rod (39) extends outward and is fixedly connected to the hand lever (311) at its end.

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