Stamping die testing device and testing method thereof

Abstract

The invention discloses a stamping die testing device and a testing method thereof, relates to the technical field of stamping die testing, and provides the following scheme aiming at the problems that only one rough range can be obtained and high-precision real-time measurement is lacked in the prior art: the stamping die testing device comprises a working table, and one side of the lower end of the working table is connected with a display control box; the two sides of the upper end of the workbench are connected with moving mechanisms, the moving mechanisms are of screw rotation synchronous moving structures, the two ends of the upper portion of the workbench are connected with a first detection table and a second detection table respectively, and the first detection table and the second detection table are of clamping and fixing detection structures. A high-precision distance measurement technology is adopted for the distance sensor, accurate measurement of tiny abrasion of the die can be achieved, measurement data are automatically compared and analyzed through the display control box, and the abrasion position and degree of the die are judged.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping die testing, and particularly relates to a stamping die testing device and a testing method thereof. Background Art

[0002] Stamping dies play a crucial role in industrial production. Their accuracy and service life directly affect the quality and production efficiency of products. Common applications of stamping dies include automobile shells, hardware, and grooves on iron doors. The quality and performance of stamping dies directly affect the quality, production efficiency, and cost of stamped parts.

[0003] However, in the existing stamping die testing, when testing the punching force of a stamping die, only a rough range can often be obtained, lacking high-precision real-time measurement, which makes it difficult to accurately adjust the pressure parameters of stamping equipment, affecting the dimensional accuracy and surface quality of stamped parts. For the wear condition of the die, it is usually detected by visual inspection or simple measuring tools after the die has been used for a period of time. This detection method has strong hysteresis and cannot detect problems in time at the initial stage of die wear and take measures, easily resulting in the production of a large number of defective products. Summary of the Invention

[0004] A stamping die testing device and a testing method thereof proposed by the present invention solve the existing problems.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A stamping die testing device and a testing method thereof, including a workbench, one side of the lower end of the workbench is connected with a display control box, and both sides of the upper end of the workbench are connected with a moving mechanism. The moving mechanism is a screw rotation synchronous moving structure. Both ends above the workbench are respectively connected with a first detection table and a second detection table, and the first detection table and the second detection table are clamping and fixing detection structures. A stamping mechanism is connected between the first detection table and the second detection table at intervals, and the stamping mechanism is used for stamping and processing the die;

[0006] A second vertical frame is arranged at intervals above the first detection table and the second detection table. The middle part of the upper end of the second vertical frame is connected with a distance sensor, and first positioning sensors are arranged on both sides of the distance sensor.

[0007] Preferably, first detection grooves and second detection grooves are symmetrically opened on both sides of the upper end of the workbench, and mounting frames are connected to both sides of the workbench.

[0008] Preferably, the moving mechanism includes a frame plate. Two guide rods are connected in parallel up and down inside the frame plate. A lead screw is connected between the two guide rods. The outer ends of the guide rods and the lead screw are connected with a moving block, and a fifth electric push cylinder is connected to one side of the moving block.

[0009] Preferably, one end of the lead screw is connected to a first right-angle transmission box, and a first rotating rod is connected to the lower end of the first right-angle transmission box. The other end of the first rotating rod is connected to a second right-angle transmission box, one end of the second right-angle transmission box is connected to a second rotating rod, and one end of the second rotating rod is connected to a motor.

[0010] Preferably, the first detection table and the second detection table have the same structure, and the first detection table and the second detection table are respectively connected to the first detection groove and the second detection groove at the upper end of the workbench.

[0011] Preferably, the first detection table includes a placement block, a circular through-hole is provided in the middle of the placement block, and a first electric push cylinder is connected inside the circular through-hole, and a second electric push cylinder is connected to the upper end of the first electric push cylinder.

[0012] Preferably, square through-holes are provided on both sides of the placement block, a third electric push cylinder is connected inside the square through-holes, a folding frame is connected above the third electric push cylinder, and a sixth electric push cylinder is connected inside the folding frame.

[0013] Preferably, the stamping mechanism includes a bottom plate, first convex blocks are provided at both ends above the bottom plate, and pressure sensors are connected inside the first convex blocks. Positioning columns are connected to the four corners of the bottom plate, a first mold is connected to the outside of the pressure sensors, and the first mold is matched and engaged with the first convex blocks.

[0014] Preferably, first vertical frames are correspondingly arranged at intervals above the first mold, a fourth electric push cylinder is connected to the middle of the upper end of the first vertical frame, a push plate is connected below the fourth electric push cylinder, sleeve columns are connected to the four corners of the push plate, second convex blocks are connected to both sides below the push plate, a second mold is connected below the second convex blocks through bolts and positioning pins, and first displacement sensors are connected to both sides of the upper end of the push plate.

[0015] A testing method for the stamping die testing device described above includes the following steps:

[0016] S1: Place the workpiece to be processed on the second electric push cylinder, start the third electric push cylinder to lift the sixth electric push cylinder. After the sixth electric push cylinder is lifted, it expands and contracts to clamp the workpiece to be processed.

[0017] S2: Measure the distance between it and the outer wall of the workpiece to be processed through a distance sensor as a standard value, and record this value and store it in the display control box.

[0018] S3: Retract the sixth electric push cylinder and the third electric push cylinder in sequence. Push the workpiece to be processed to lift through the first electric push cylinder, rotate the lead screw to drive the moving block to move, the movement of the moving block drives the fifth electric push cylinder to move to one side of the workpiece to be processed, and start the fifth electric push cylinder to clamp and move the workpiece to be processed to the upper end of the first mold.

[0019] S4: The fifth electric push cylinder contracts, the fourth electric push cylinder is activated, so that the push plate drives the second mold to stamp downward on the first mold. During the stamping process, the pressure sensor measures the pressure of the push plate on the first mold in real time and transmits the pressure signal to the display control box. The first displacement sensor measures the vertical displacement of the push plate during the stamping process in real time and transmits the displacement signal to the display control box;

[0020] S5: The push plate drives the second mold to retract, the fifth electric push cylinder extends forward to clamp the machined workpiece, the lead screw is rotated to move the machined workpiece to the second detection table, and secondary detection is performed with reference to S. The distance between the distance sensor and the outer wall of the machined workpiece is measured again as the actual value;

[0021] S6: The display control box compares the actual value with the standard value. If the difference data of each part is different, it is determined that there is a worn position on the mold.

[0022] The beneficial effects of the present invention are as follows: Before machining the workpiece, the distance sensor is used to measure the distance between it and the outer wall of the punch as the standard value and stored in the controller. After machining the workpiece, the distance sensor is used again to measure the distance between it and the outer wall of the punch as the actual value. The display control box compares the actual value with the standard value. If there is a difference in the data comparison, it is determined that there is a worn position on the mold. The distance sensor adopts high-precision ranging technology, which can accurately measure the minute wear of the mold. By automatically comparing and analyzing the measurement data through the display control box, the worn position and degree of the mold are judged, providing a scientific basis for the maintenance and replacement of the mold, and facilitating the personnel to maintain and replace it in a timely manner; The pressure sensor measures the pressure of the push plate on the first mold in real time and transmits the pressure signal to the display control box. The first displacement sensor measures the vertical displacement of the push plate during the stamping process in real time and transmits the displacement signal to the display control box, accurately measuring the pressure value during the stamping process and the vertical displacement of the second mold. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the present invention.

[0024] Figure 2 It is a schematic diagram of the moving mechanism of the present invention.

[0025] Figure 3 It is a schematic diagram of the first detection table of the present invention.

[0026] Figure 4 It is a schematic diagram of the second vertical frame of the present invention.

[0027] Figure 5 It is a schematic diagram of the first convex block of the present invention.

[0028] Figure 6Schematic diagram of the stamping mechanism of the present invention.

[0029] Reference numerals in the figure: 1, workbench; 101, first detection groove; 102, second detection groove; 103, mounting frame; 2, display control box; 3, moving mechanism; 301, frame plate; 302, guide rod; 303, lead screw; 304, first right-angle transmission box; 305, first rotating rod; 306, second right-angle transmission box; 307, second rotating rod; 308, motor; 309, moving block; 310, fifth electric push cylinder; 4, first detection table; 401, placing block; 402, first electric push cylinder; 403, second electric push cylinder; 404, third electric push cylinder; 405, folding frame; 406, sixth electric push cylinder; 5, second detection table; 6, stamping mechanism; 601, bottom plate; 602, first convex block; 603, pressure sensor; 604, positioning column; 605, first die; 606, first vertical frame; 607, fourth electric push cylinder; 608, push plate; 609, sleeve column; 610, second convex block; 611, second die; 612, first displacement sensor; 7, second vertical frame; 701, distance sensor; 702, first positioning sensor. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0031] Refer to Figures 1-6 , a stamping die testing device and its testing method, including a workbench 1, a display control box 2 is connected to one side of the lower end of the workbench 1, and a moving mechanism 3 is connected to both sides of the upper end of the workbench 1. The moving mechanism 3 is a screw rotation synchronous moving structure. Two ends above the workbench 1 are respectively connected with a first detection table 4 and a second detection table 5, and the first detection table 4 and the second detection table 5 are clamping and fixing detection structures. A stamping mechanism 6 is connected between the first detection table 4 and the second detection table 5 at intervals. The stamping mechanism 6 is used for stamping and processing the die.

[0032] Refer to Figure 2, on both sides of the upper end of the workbench 1, a first detection groove 101 and a second detection groove 102 are symmetrically provided, and mounting frames 103 are connected to both sides of the workbench 1. The moving mechanism 3 includes a frame plate 301. Inside the frame plate 301, two guide rods 302 are connected in parallel up and down. A lead screw 303 is connected between the two guide rods 302. The outer ends of the guide rods 302 and the lead screw 303 are connected with a moving block 309. One side of the moving block 309 is connected with a fifth electric push cylinder 310. One end of the lead screw 303 is connected with a first right-angle transmission box 304. The lower end of the first right-angle transmission box 304 is connected with a first rotating rod 305. The other end of the first rotating rod 305 is connected with a second right-angle transmission box 306. One end of the second right-angle transmission box 306 is connected with a second rotating rod 307. One end of the second rotating rod 307 is connected with a motor 308. The workpiece is clamped and released by the telescopic movement of the fifth electric push cylinder 310. The second rotating rod 307 is rotated. The first rotating rod 305 is driven to rotate by the second right-angle transmission box 306. The rotation of the first rotating rod 305 drives the lead screw 303 to rotate through the first right-angle transmission box 304. The rotation of the lead screw 303 drives the moving block 309 to move left and right.

[0033] Refer to Figure 3 , Figure 4 , the first detection table 4 and the second detection table 5 have the same structure. The first detection table 4 and the second detection table 5 are respectively connected to the first detection groove 101 and the second detection groove 102 at the upper end of the workbench 1. The first detection table 4 includes a placement block 401. A circular groove hole is provided in the middle of the placement block 401. Inside the circular groove hole, a first electric push cylinder 402 is connected. The upper end of the first electric push cylinder 402 is connected with a second electric push cylinder 403. Square groove holes are provided on both sides of the placement block 401. Inside the square groove holes, a third electric push cylinder 404 is connected. Above the third electric push cylinder 404, a folding frame 405 is connected. Inside the folding frame 405, a sixth electric push cylinder 406 is connected. A second vertical frame 7 is arranged at an interval above the first detection table 4 and the second detection table 5. In the middle of the upper end of the second vertical frame 7, a distance sensor 701 is connected. First positioning sensors 702 are arranged on both sides of the distance sensor 701. The workpiece is placed on the second electric push cylinder 403. The third electric push cylinder 404 is started to push the folding frame 405 to lift. The lifting of the folding frame 405 drives the sixth electric push cylinder 406 to move upward. Then, the workpiece is fixed by the extension of the sixth electric push cylinder 406. The first positioning sensor 702 performs workpiece positioning detection. The distance sensor 701 is started to measure the distance between it and the outer side wall of the workpiece.

[0034] Refer to Figure 5 , Figure 6, the stamping mechanism 6 includes a bottom plate 601. At both ends above the bottom plate 601, there are first bumps 602, and inside the upper part of the first bumps 602, there is a pressure sensor 603 connected. At the four corners of the bottom plate 601, there are positioning columns 604 connected. Outside the pressure sensor 603, there is a first mold 605 connected. The first mold 605 is matched and engaged with the first bumps 602. At the upper end of the first mold 605, there are first vertical frames 606 arranged at intervals correspondingly. And in the middle of the upper end of the first vertical frames 606, there is a fourth electric push cylinder 607 connected. Below the fourth electric push cylinder 607, there is a push plate 608 connected. At the four corners of the push plate 608, there are sleeve columns 609 connected. On both sides below the push plate 608, there are second bumps 610 connected. Below the second bumps 610, there is a second mold 611 connected by bolts and positioning pins. On both sides of the upper end of the push plate 608, there are first displacement sensors 612 connected. Connect the first mold 605 above the first bumps 602, and connect the second mold 611 below the second bumps 610. Move the push plate 608 to press down the second bumps 610, driving the second mold 611 to press down towards the first mold 605. The pressure sensor 603 detects the pressure value of the push plate 608 in real time, and the first displacement sensor 612 records the vertical displacement value of the push plate 608 in real time.

[0035] During specific implementation: First, the operator places the workpiece to be processed on the second electric push cylinder 403, and starts the third electric push cylinder 404 to lift the sixth electric push cylinder 406. After the sixth electric push cylinder 406 is lifted, it extends and retracts to clamp the workpiece to be processed. The distance between it and the outer wall of the workpiece to be processed is measured by the distance sensor 701 as a standard value, and this value is recorded and stored in the display control box 2. Then, the sixth electric push cylinder 406 and the third electric push cylinder 404 are retracted in sequence. The first electric push cylinder 402 is used to push the workpiece to be processed upward. The motor 308 is started to rotate the second rotating rods 307 on both sides at the same time. The second right-angle transmission box 306 drives the first rotating rod 305 to rotate. As the first rotating rod 305 rotates, the first right-angle transmission box 304 drives the lead screw 303 to rotate. The rotation of the lead screw 303 drives the moving block 309 to move. The movement of the moving block 309 drives the fifth electric push cylinder 310 to move to one side of the workpiece to be processed. The fifth electric push cylinder 310 is started to clamp and move the workpiece to be processed to the upper end of the first mold 605. The fifth electric push cylinder 310 retracts. The fourth electric push cylinder 607 is started to push the push plate 608 downward, so that the push plate 608 drives the second mold 611 to stamp the first mold 605 downward. During the stamping process, the pressure sensor 603 measures the pressure of the push plate 608 on the first mold 605 in real time and transmits the pressure signal to the display control box 2. The first displacement sensor 612 measures the vertical displacement of the push plate 608 during the stamping process in real time and transmits the displacement signal to the display control box 2. The push plate 608 drives the second mold 611 to retract. The fifth electric push cylinder 310 extends forward to clamp the processed workpiece. The lead screw 303 is rotated to move the processed workpiece to the second detection table 5. The distance sensor 701 is used again to measure the distance between it and the outer wall of the processed workpiece as the actual value. The display control box 2 compares the actual value with the standard value. If the difference data of each part is different, it is determined that there is a worn position on the mold.

[0036] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A stamping die testing device, comprising a workbench (1), characterized in that, One side of the lower end of the workbench (1) is connected with a display control box (2), and both sides of the upper end of the workbench (1) are connected with a moving mechanism (3). The moving mechanism (3) is a screw rotation synchronous moving structure. Both ends above the workbench (1) are respectively connected with a first detection table (4) and a second detection table (5), and the first detection table (4) and the second detection table (5) are clamping and fixing detection structures. A stamping mechanism (6) is connected between the first detection table (4) and the second detection table (5) at intervals, and the stamping mechanism (6) is used for stamping and processing the mold. A second vertical frame (7) is arranged at intervals above the first detection table (4) and the second detection table (5). The middle of the upper end of the second vertical frame (7) is connected with a distance sensor (701), and first positioning sensors (702) are arranged on both sides of the distance sensor (701).

2. The stamping die testing device according to claim 1, wherein First detection grooves (101) and second detection grooves (102) are symmetrically opened on both sides of the upper end of the workbench (1), and mounting frames (103) are connected to both sides of the workbench (1).

3. A stamping die testing device according to claim 1, characterized in that, The moving mechanism (3) includes a frame plate (301). Two guide rods (302) are connected in parallel up and down inside the frame plate (301). A lead screw (303) is connected between the two guide rods (302). The outer ends of the guide rods (302) and the lead screw (303) are connected with a moving block (309), and a fifth electric push cylinder (310) is connected to one side of the moving block (309).

4. The stamping die testing device according to claim 3, wherein, One end of the lead screw (303) is connected with a first right-angle transmission box (304), and the lower end of the first right-angle transmission box (304) is connected with a first rotating rod (305). The other end of the first rotating rod (305) is connected with a second right-angle transmission box (306). One end of the second right-angle transmission box (306) is connected with a second rotating rod (307), and one end of the second rotating rod (307) is connected with a motor (308).

5. A stamping die testing device according to claim 1, characterized in that, The structures of the first detection table (4) and the second detection table (5) are the same. The first detection table (4) and the second detection table (5) are respectively connected to the first detection groove (101) and the second detection groove (102) at the upper end of the workbench (1).

6. The stamping die testing device according to claim 1, wherein The first detection table (4) includes a placement block (401). A circular through-hole is opened in the middle of the placement block (401), and a first electric push cylinder (402) is connected inside the circular through-hole. The upper end of the first electric push cylinder (402) is connected with a second electric push cylinder (403).

7. A stamping die testing device according to claim 6, characterized in that, Square through-holes are opened on both sides of the placement block (401). A third electric push cylinder (404) is connected inside the square through-holes. A folding frame (405) is connected above the third electric push cylinder (404), and a sixth electric push cylinder (406) is connected inside the folding frame (405).

8. A stamping die testing device according to claim 1, characterized in that, The stamping mechanism (6) includes a bottom plate (601). At both ends above the bottom plate (601), there are first bumps (602). Inside the upper part of the first bumps (602), there is a pressure sensor (603) connected. At the four corners of the bottom plate (601), there are positioning columns (604) connected. Outside the pressure sensor (603), there is a first mold (605) connected. The first mold (605) and the first bumps (602) are mutually matched and engaged.

9. The stamping die testing device according to claim 8, characterized in that, Correspondingly and at intervals above the first mold (605), there are first vertical frames (606). In the middle of the upper ends of the first vertical frames (606), there is a fourth electric push cylinder (607) connected. Below the fourth electric push cylinder (607), there is a push plate (608) connected. At the four corners of the push plate (608), there are sleeve columns (609) connected. On both sides below the push plate (608), there are second bumps (610) connected. Below the second bumps (610), there is a second mold (611) connected by bolts and positioning pins. On both sides of the upper end of the push plate (608), there is a first displacement sensor (612) connected.

10. A testing method for the stamping die testing device according to any one of claims 1-9, characterized in that, It includes the following steps: S1: Place the workpiece to be processed on the second electric push cylinder (403), start the third electric push cylinder (404) to lift the sixth electric push cylinder (406). After the sixth electric push cylinder (406) is lifted, it extends and retracts to clamp the workpiece to be processed. S2: Measure the distance between it and the outer side wall of the workpiece to be processed through the distance sensor (701) as a standard value, and record this value and store it in the display control box (2). S3: Retract the sixth electric push cylinder (406) and the third electric push cylinder (404) in sequence. Push the workpiece to be processed to lift through the first electric push cylinder (402). Rotate the lead screw (303) to drive the moving block (309) to move. The movement of the moving block (309) drives the fifth electric push cylinder (310) to move to one side of the workpiece to be processed. Start the fifth electric push cylinder (310) to clamp and move the workpiece to be processed to the upper end of the first mold (605). S4: The fifth electric push cylinder (310) contracts. Start the fourth electric push cylinder (607) to make the push plate (608) drive the second mold (611) to press down on the first mold (605). During the stamping process, the pressure sensor (603) measures the pressure of the push plate (608) on the first mold (605) in real time and transmits the pressure signal to the display control box (2). The first displacement sensor (612) measures the vertical displacement of the push plate (608) during the stamping process in real time and transmits the displacement signal to the display control box (2). S5: The push plate (608) drives the second mold (611) to retract. The fifth electric push cylinder (310) extends forward to clamp the processed workpiece. Rotate the lead screw (303) to move the processed workpiece to the second detection table (5). Refer to S2 for secondary detection. Use the distance sensor (701) again to measure the distance between it and the outer side wall of the processed workpiece as the actual value. S6: The display control box (2) compares the actual value with the standard value. If the difference data of each part is different, it is determined that there is a worn position on the mold.

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