Visual detection device and method for cold-die production

Abstract

This invention relates to a visual inspection device and method for cold heading mold production, belonging to the field of cold heading processing. It includes a base, a housing, and multiple visual inspection devices. The base has multiple concave and convex dies. A mounting frame is fixedly connected to the base, and a movable seat is slidably connected to the mounting frame. The convex dies are fixedly mounted on the movable seat. A mounting base is located on one side of the movable seat, and the concave dies are fixedly mounted on the mounting base. Multiple V-shaped plates are provided on the mounting frame. This invention, through a trigger mechanism coordinated with the convex die retraction and reset, can automatically complete the timing control of workpiece ejection and delayed start-up inspection. This ensures that the ejected workpiece is completely removed from the mold cavity and the ejector pin is reset before the visual inspection devices are pushed out for mold cavity inspection. The inspection timing is accurate and reasonable, enabling early identification of abnormalities such as residual foreign objects, cracks, and wear in the mold cavity, effectively preventing mold breakage accidents and the generation of batch defective products, and reducing production losses.

Description

Technical Field

[0001] This invention relates to the field of cold heading technology, and in particular to a visual inspection device and method for cold heading mold production. Background Technology

[0002] Cold heading is a strongly constrained cold forging and extrusion process that utilizes the plasticity of metals at room temperature, employing cold mechanical forces to apply pressure or cold draw to achieve solid-state deformation of the metal. Products manufactured using cold heading machines (such as bolts, nuts, and irregularly shaped parts) are characterized by large batch sizes, high precision, and good mechanical properties, and also have high material utilization, making it an ideal manufacturing method. To ensure product quality, existing technologies have developed solutions for online visual inspection of cold-headed products.

[0003] Upon investigation, a Chinese invention patent discloses an online visual inspection system for cold heading products (publication number: CN102539442A), which includes an image acquisition module, a sorting device, and an image data processing module. The image acquisition module is set inside a dark box and mainly consists of an inspection platform, a CCD camera, and a light source. The cold heading machine is connected to the entrance of the inspection platform via a conveyor belt.

[0004] Although the aforementioned patent sets up a conveyor belt, detection platform, and dark box-type image acquisition module at the discharge end of the cold heading machine, and uses a CCD camera to detect the contour and size of the cold heading finished product during conveying, thereby achieving automatic sorting of qualified and unqualified products, this device cannot identify abnormalities such as residual foreign objects, cracks, wear, chipping, and ejector pins not resetting in advance. It cannot effectively prevent mold pressing, mold breaking accidents, and batch defects. At the same time, its detection device is installed on the discharge conveyor line and cannot be coordinated with the mold opening and closing action. The mold cavity can only be detected after the mold is opened, the ejector pin pushes the material and resets. In addition, the detection lens is easily affected by oil mist and iron filings, causing lens contamination and damage and reduced image quality. Therefore, a timing control is needed to detect the inner cavity after the workpiece is removed after the mold is opened, the ejector pin resets, and then the inner cavity is detected, so as to ensure that the inner cavity of the mold is monitored stably and accurately online.

[0005] Therefore, this application provides a visual inspection device and method for cold heading mold production to meet the requirements. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a visual inspection device and method for cold heading mold production, so as to solve the problems that the inspection device cannot monitor the state of the mold cavity online, the inspection timing is unreasonable, and the inspection lens is easily affected by oil and iron filings, resulting in reduced imaging quality.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A visual inspection device for cold heading mold production includes a base, a housing, and multiple visual inspection devices. The base has multiple concave and convex molds. A mounting frame is fixedly connected to the base, and a movable seat is slidably connected to the mounting frame. The convex molds are fixedly mounted on the movable seat. A mounting base is located on one side of the movable seat, and the concave molds are fixedly mounted on the mounting base. The mounting frame has multiple V-shaped plates. A triggering mechanism is provided between the movable seat and the base. This triggering mechanism drives the visual inspection devices to inspect the mold cavity after demolding. The triggering mechanism includes a protrusion, a first spring, a metal ball, a metal block, and a second spring. An isolation mechanism is provided within the V-shaped plates. This isolation mechanism isolates oil and iron filings. The isolation mechanism includes multiple baffles, a connecting rod, a mounting platform, and a third spring.

[0008] Optionally, a motor is fixedly installed on the base, a drive wheel is coaxially fixed on the output end of the motor, movable blocks are symmetrically fixed on both sides of the movable seat, and the movable blocks are slidably connected to the mounting frame. A connecting rod is rotatably connected between the movable blocks and the drive wheel.

[0009] Optionally, a partition is fixedly connected between the base and the mounting bracket, support plates are symmetrically fixed on the base, and a fixing frame is fixedly connected between the two support plates. Two parallel guide grooves are opened on the support plates, a support rod is fixedly connected to the bottom of the metal ball, and the second spring is fixedly connected between the fixing frame and the support rod.

[0010] Optionally, two movable columns are symmetrically fixed on the support rod, and the movable columns are movably connected in the guide groove. The ends of the movable columns are fixedly connected to limit rings, and the limit rings abut against the support plate. A connecting frame is fixedly connected to the base, and a first metal plate and a second metal plate are fixedly connected to the connecting frame.

[0011] Optionally, a mounting block is fixedly connected to the bottom of the movable seat, a mounting groove is provided in the mounting block, a slider is slidably connected in the mounting groove, the first spring is fixedly connected between the slider and the inner wall of the mounting groove, the protrusion is fixedly connected to the slider, and the metal block is fixedly connected to the protrusion.

[0012] Optionally, a first cylinder is fixedly connected inside the mounting base, an ejector block is fixedly connected to the output end of the first cylinder, and a support frame is fixedly connected to the top of the movable base.

[0013] Optionally, a rubber buffer seat is fixedly connected to the support frame, a fixing plate is fixedly connected to the V-shaped plate, and a ball head clamp is installed between the fixing plate and the rubber buffer seat.

[0014] Optionally, the V-shaped plate is provided with a second cylinder and a mounting plate. The second cylinder is fixedly installed in the V-shaped plate by a cross, and the output end of the second cylinder is fixedly connected to one side of the mounting plate. The visual inspection device is fixedly installed on the other side of the mounting plate, and the mounting plate is slidably connected in the V-shaped plate.

[0015] Optionally, the baffle is rotatably connected to the end of the V-shaped plate, one end of the connecting rod is fixedly connected to the baffle, and the other end of the connecting rod is rotatably connected to the mounting platform. Multiple movable frames are fixedly connected to the mounting platform, and guide rods are fixedly connected to the movable frames. A third spring is sleeved on the guide rods. The mounting platform is slidably connected to the movable frames, and the guide rods slide through the mounting platform. The third spring is fixedly connected between the mounting platform and the movable frames. Movable blocks are symmetrically fixed on both sides of the mounting platform, and the movable blocks are movably connected to the movable frames.

[0016] This application also provides another technical solution: a visual inspection method for cold heading mold production, the specific steps of which are as follows: S1: Start the motor. The motor drives the drive wheel to rotate, which pushes the moving block to move back and forth along the mounting frame through the connecting rod. This causes the punch to approach the die to complete the mold closing and cold heading process. After the process is completed, the movable seat drives the punch to retract and reset to complete the demolding. S2: When the movable seat retracts and returns to the preset position, the protrusion under the movable seat moves to one side of the metal ball. At this time, the metal block on the protrusion contacts the metal ball, and the first cylinder drives the ejector block to move and pushes out the molded part in the die. S3: As the bump continues to push the metal ball to move, the support rod below the metal ball gradually moves down under the action of the guide groove and stretches the second spring. Finally, the metal ball that moves down separates from the metal block, and the stretched second spring drives the metal ball to reset. The first cylinder is de-energized, which drives the ejector block to reset. S4: When the protrusion continues to move to the farthest distance, it pushes the second metal plate to contact the first metal plate. The second cylinder and the vision inspection device are powered on. The second cylinder drives the mounting plate to move towards the baffle. The stretched third spring returns to its original position and pulls the mounting platform to move. The mounting platform drives the baffle to rotate through the connecting rod, so that the baffle at the V-shaped plate outlet gradually opens. The mounting plate pushes out the internal vision inspection device. The activated vision inspection device takes pictures and inspects the punch and the cavity of the demolded die to identify whether there are residual iron filings, oil stains and damage in the cavity. S5: After the inspection is completed, the movable seat continues to drive the punch to approach the die, the second metal sheet and the first metal sheet separate, the second cylinder drives the mounting plate and vision inspection equipment to retract, the mounting plate pulls the mounting table to move in the opposite direction and stretches the third spring, and drives the baffle to rotate again through the connecting rod to close the V-shaped plate outlet, isolating the vision inspection equipment inside the V-shaped plate to avoid iron filings and oil stains splashing and contaminating the lens during the processing; S6: The movable seat continues to drive the protrusion to move. The protrusion abuts against the metal ball. Under the action of the inclined surface of the protrusion, the protrusion is pushed into the mounting groove and the first spring is compressed. During the whole process, the metal block will not abut against the metal ball, and the first cylinder will not work to prevent the unprocessed part from being pushed out of the die. When the protrusion and the metal ball are misaligned, the compressed first spring pushes the protrusion to reset so that it can be used for subsequent mold cavity inspection.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, the timing control of ejecting the workpiece and delaying the start of the inspection can be automatically completed by the trigger mechanism in conjunction with the retraction and reset of the punch. This ensures that the ejected workpiece is completely removed from the mold cavity and the ejector pin is reset before the vision inspection equipment is pushed out to inspect the mold cavity. The inspection timing is accurate and reasonable, and it can identify abnormalities such as residual foreign objects, cracks, and wear in the mold cavity in advance, effectively preventing mold pressing and mold breakage accidents and the generation of batch defective products, and reducing production losses.

[0018] By setting up an isolation mechanism, when the visual inspection equipment retracts into the V-shaped plate after the inspection is completed, the baffle automatically closes the V-shaped plate outlet, sealing the visual inspection equipment inside the V-shaped plate. This effectively prevents iron filings and oil stains from splashing and contaminating the inspection lens during cold heading, preventing lens contamination and damage, and ensuring stable imaging quality.

[0019] The detection action of this device is automatically completed in complete coordination with the opening and closing action of the mold. There is no need to set up additional drive and control components to adjust the detection timing. It has a high degree of structural integration, precise timing control, and can be directly integrated into cold heading equipment to achieve online detection. It has good adaptability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a visual inspection device for cold heading mold production. Figure 2 This is an internal structural diagram of a visual inspection device used in cold heading mold production. Figure 3 A cross-sectional view of the structure of a visual inspection device for cold heading mold production; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the installation of a V-shaped plate in a visual inspection device for cold heading mold production. Figure 7 A cross-sectional view of the V-shaped plate in a visual inspection device for cold heading mold production; Figure 8A disassembled view of the internal structure of a V-shaped plate in a visual inspection device for cold heading mold production; Figure 9 for Figure 8 Enlarged view of a local structure in the middle; Figure 10 for Figure 9 Enlarged view of a local structure.

[0021] Figure label: 1. Housing; 2. Mounting bracket; 3. Base; 4. Motor; 5. Drive wheel; 6. Connecting rod; 7. Moving block; 8. Movable seat; 9. Mounting seat; 10. Support frame; 11. Die; 12. Punch; 13. Mounting block; 14. First spring; 15. Slider; 16. Protrusion; 17. Metal block; 18. Support plate; 19. Guide groove; 20. Fixing frame; 21. Second spring; 22. Metal ball; 23. Support rod; 24. Movable column; 25. 26. Limiting ring; 27. Connecting frame; 28. First metal plate; 29. ​​Second metal plate; 20. Ejector block; 31. First cylinder; 32. Rubber buffer seat; 33. V-shaped plate; 34. Ball head clamp; 35. Fixing plate; 36. Cross; 37. Second cylinder; 38. Mounting plate; 39. Vision inspection equipment; 40. Baffle; 41. Movable frame; 42. Connecting rod; 43. Mounting platform; 44. Movable block; 45. Guide rod; 46. Third spring. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0023] like Figures 1 to 10As shown, an embodiment of the present invention provides a visual inspection device for cold heading mold production, including a base 3, a housing 1, and multiple visual inspection devices 38. The base 3 is provided with multiple concave molds 11 and convex molds 12. A mounting frame 2 is fixedly connected to the base 3, and a movable seat 8 is slidably connected to the mounting frame 2. The convex molds 12 are fixedly mounted on the movable seat 8. A mounting base 9 is provided on one side of the movable seat 8, and the concave molds 11 are fixedly mounted on the mounting base 9. Multiple V-shaped plates 32 are provided on the mounting frame 2. An actuation mechanism is provided between the movable seat 8 and the base 3. The actuation mechanism is used to drive the visual inspection devices 38 to inspect the mold cavity after demolding. The mechanism includes a protrusion 16, a first spring 14, a metal ball 22, a metal block 17, and a second spring 21; the V-shaped plate 32 is equipped with an isolation mechanism to isolate oil and iron filings. The isolation mechanism includes multiple baffles 39, a connecting rod 41, a mounting platform 42, and a third spring 45; the base 3 and the housing 1 form an overall protective structure. The mounting frame 2 provides a stable sliding guide for the movable seat 8 to ensure the coaxiality of the reciprocating motion of the punch 12. The triggering mechanism and the isolation mechanism are integrated and arranged to accurately trigger detection after the mold is opened and the workpiece is removed, and automatically close the lens during processing, taking into account both sequential linkage and protection under harsh working conditions.

[0024] like Figure 2 As shown, a motor 4 is fixedly installed on the base 3, and a drive wheel 5 is coaxially fixed on the output end of the motor 4. Moving blocks 7 are symmetrically fixed on both sides of the movable seat 8, and the moving blocks 7 are slidably connected to the mounting frame 2. A connecting rod 6 is rotatably connected between the moving blocks 7 and the drive wheel 5. The motor 4, through the drive wheel 5 and the connecting rod 6, forms a crank-slider mechanism, which drives the movable seat 8 to make stable reciprocating motion along the mounting frame 2. The symmetrical arrangement of the moving blocks 7 on both sides ensures balanced force, effectively offsets the lateral force generated by high-speed impact, reduces running vibration, and provides a reliable power foundation for subsequent timing triggering. It should be noted that motor 4 is connected to an external power source via wires. The external power source includes a battery for providing power to motor 4 and a control switch for controlling its start and stop. The external power source is existing technology. Motor 4 is a dual-shaft motor, with its rotor shaft extending from both ends of the motor body. It has one rotor and two output ends, rotating synchronously at the same speed. The specific model and specifications of motor 4 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts existing technology in this field, so it will not be described in detail here.

[0025] like Figure 3 and Figure 4As shown, a partition is fixedly connected between the base 3 and the mounting bracket 2. Support plates 18 are symmetrically fixed on the base 3, and a fixing bracket 20 is fixedly connected between the two support plates 18. Two parallel guide grooves 19 are provided on the support plates 18. A support rod 23 is fixedly connected to the bottom of the metal ball 22. A second spring 21 is fixedly connected between the fixing bracket 20 and the support rod 23. Two movable columns 24 are symmetrically fixed on the support rod 23, and the movable columns 24 are movably connected within the guide grooves 19. A limit ring 25 is fixedly connected to the end of each movable column 24, and the limit ring 25 abuts against the support plate 18. A connecting frame 26 is fixedly connected to the seat 3. A first metal plate 27 and a second metal plate 28 are fixedly connected to the connecting frame 26. An installation block 13 is fixedly connected to the bottom of the movable seat 8. An installation groove is opened in the installation block 13. A slider 15 is slidably connected in the installation groove. A first spring 14 is fixedly connected between the slider 15 and the inner wall of the installation groove. A protrusion 16 is fixedly connected to the slider 15. A metal block 17 is fixedly connected to the protrusion 16. A first cylinder 30 is fixedly connected in the mounting seat 9. An ejector block 29 is fixedly connected to the output end of the first cylinder 30. A support frame 10 is fixedly connected to the top of the movable seat 8. The support plate 18 and guide groove 19, together with the support rod 23 and movable column 24, realize the vertical guidance and horizontal limitation of the metal ball 22. The limiting ring 25 prevents it from falling out. The second spring 21 provides the restoring force. The protrusion 16, slider 15 and first spring 14 form an elastic triggering structure, which can adaptively avoid jamming. The first metal sheet 27 and the second metal sheet 28 realize the electrical signal triggering when the mold is opened. The first cylinder 30 drives the ejector block 29 to accurately eject the material, ensuring that the workpiece is completely removed from the mold cavity before inspection, avoiding obstruction.

[0026] like Figure 6 and Figure 7 As shown, a rubber buffer seat 31 is fixedly connected to the support frame 10, and a fixing plate 34 is fixedly connected to the V-shaped plate 32. A ball head clamp 33 is installed between the fixing plate 34 and the rubber buffer seat 31. The rubber buffer seat 31 effectively attenuates the high-frequency impact vibration of cold heading, reduces the vibration transmission to the V-shaped plate 32 and the vision inspection device 38, and ensures clear imaging. The ball head clamp 33 can realize multi-angle fine adjustment of the V-shaped plate 32, adapt to the center of the cavity of the die 11 of different specifications, and is convenient to adjust and stable in positioning.

[0027] like Figure 8 and Figure 9As shown, a second cylinder 36 and a mounting plate 37 are provided inside the V-shaped plate 32. The second cylinder 36 is fixedly installed inside the V-shaped plate 32 by a cross 35. The output end of the second cylinder 36 is fixedly connected to one side of the mounting plate 37. The visual inspection device 38 is fixedly installed on the other side of the mounting plate 37. The mounting plate 37 is slidably connected inside the V-shaped plate 32. The baffle 39 is rotatably connected to the end of the V-shaped plate 32. One end of the connecting rod 41 is fixedly connected to the baffle 39, and the other end of the connecting rod 41 is rotatably connected to the mounting platform 42. Multiple movable frames 40 are fixedly connected on the mounting plate 37. Guide rods 44 are fixedly connected on the movable frames 40, and a third spring 45 is sleeved on the guide rods 44. The mounting platform 42 is slidably connected to the movable frames 40, and the guide rods 44 slide through the mounting platform 42. The third spring 45 is fixedly connected between the mounting platform 42 and the movable frames 40. Movable blocks 43 are symmetrically fixed on both sides of the mounting platform 42, and the movable blocks 43 are movably connected to the movable frames 40. The cross 35 ensures the coaxiality of the second cylinder 36 during installation. The mounting plate 37 slides stably along the V-shaped plate 32, enabling the visual inspection equipment 38 to extend and retract. The baffle 39, connecting rod 41, mounting platform 42, and third spring 45 work together to automatically open the door when extended and automatically close it when retracted. During processing, the lens is sealed to prevent oil mist and metal shavings contamination, while during inspection, it opens quickly without obstruction. The protection and inspection actions are synchronized and the response is rapid. It should be noted that the first cylinder 30 and the second cylinder 36 are press-fit single-acting cylinders. When air is supplied, the piston rod extends; when air is cut off, the internal spring extends. The piston rod retracts automatically, which is simple in structure and can automatically reset without an external air source after power failure. The specific model and specifications of the first cylinder 30 and the second cylinder 36 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail. The elastic force of the third spring 45 is much smaller than the force generated by the reset of the second cylinder 36. The third spring 45 is only to provide a little tension to the mounting platform 42. When the mounting plate 37 moves, the connecting rod 41 tilts, which improves the continuity of the opening of the baffle 39.

[0028] This application also provides another technical solution: a visual inspection method for cold heading mold production, the specific steps of which are as follows: S1: Start motor 4. Motor 4 drives drive wheel 5 to rotate. Through connecting rod 6, it pushes moving block 7 to move back and forth along mounting frame 2, driving punch 12 to approach die 11 to complete mold closing and cold heading. After processing, movable seat 8 drives punch 12 to retract and reset to complete demolding. S2: When the movable seat 8 retracts and resets to the preset position, the protrusion 16 under the movable seat 8 moves to one side of the metal ball 22. At this time, the metal block 17 on the protrusion 16 contacts the metal ball 22, and the first cylinder 30 drives the ejector block 29 to move and pushes out the molded part in the die 11. S3: When the protrusion 16 continues to push the metal ball 22 to move, the support rod 23 below the metal ball 22 gradually moves down under the action of the guide groove 19 and stretches the second spring 21. Finally, the metal ball 22 that moves down separates from the metal block 17, and the stretched second spring 21 drives the metal ball 22 to reset. The first cylinder 30 is de-energized, which drives the ejector block 29 to reset. S4: When the protrusion 16 continues to move to the farthest distance, it pushes the second metal plate 28 to contact the first metal plate 27. The second cylinder 36 and the vision inspection device 38 are powered on. The second cylinder 36 drives the mounting plate 37 to move towards the baffle 39. The stretched third spring 45 resets and pulls the mounting platform 42 to move. The mounting platform 42 drives the baffle 39 to rotate through the connecting rod 41, so that the baffle 39 at the outlet of the V-shaped plate 32 gradually opens. The mounting plate 37 pushes out the internal vision inspection device 38. The activated vision inspection device 38 takes pictures and inspects the cavity of the punch 12 and the demolded die 11 to identify whether there are residual iron filings, oil stains and damage in the cavity. S5: After the inspection is completed, the movable seat 8 continues to drive the punch 12 to approach the die 11, the second metal sheet 28 and the first metal sheet 27 separate, the second cylinder 36 drives the mounting plate 37 and the vision inspection device 38 to retract, during the retraction of the mounting plate 37, the mounting table 42 is pulled to move in the opposite direction and stretch the third spring 45, and the baffle 39 is driven to rotate again through the connecting rod 41 to close the outlet of the V-shaped plate 32, and isolate the vision inspection device 38 inside the V-shaped plate 32 to avoid the lens from being contaminated by iron filings and oil stains during the processing; S6: The movable seat 8 continues to drive the protrusion 16 to move. The protrusion 16 abuts against the metal ball 22. Under the action of the inclined surface of the protrusion 16, the protrusion 16 is pushed into the mounting groove and the first spring 14 is compressed. During the whole process, the metal block 17 will not abut against the metal ball 22, and the first cylinder 30 will not work to prevent the unprocessed part from being pushed out of the die 11. When the position of the protrusion 16 and the metal ball 22 is misaligned, the compressed first spring 14 pushes the protrusion 16 to reset so as to cooperate with the mold cavity for subsequent inspection.

[0029] The working principle of the technical solution provided by this invention is as follows: During operation, the motor 4 drives the drive wheel 5 to rotate continuously, which pulls the movable seat 8 along the mounting frame 2 through the connecting rod 6, driving the punch 12 to complete the opening and closing action. When the movable seat 8 returns to its original position after each processing, the protrusion 16 at the bottom of the movable seat 8 moves synchronously, first allowing the metal block 17 to contact the metal ball 22 and conduct the first cylinder 30, thus ejecting the formed workpiece from the cavity of the die 11. As the protrusion 16 continues to move, the metal ball 22 moves down under the guidance of the guide groove 19, disconnecting the first cylinder 30, and the ejector block 29 automatically resets.

[0030] Furthermore, when the movable seat 8 retracts into place, the protrusion 16 pushes the second metal plate 28 to contact the first metal plate 27, connecting the second cylinder 36 and the vision inspection device 38. The second cylinder 36 pushes the mounting plate 37 outward. During this process, the third spring 45 pulls the mounting table 42 to move, and the connecting rod 41 drives the baffle 39 to open automatically, pushing the vision inspection device 38 out of the V-shaped plate 32 to take pictures and inspect the cavity of the die 11 and the punch 12 to confirm whether there are foreign objects or structural damage.

[0031] In addition, after the inspection is completed, the movable seat 8 moves back towards the die 11, the second metal sheet 28 separates from the first metal sheet 27 and is de-energized, the second cylinder 36 drives the mounting plate 37 and the vision inspection device 38 to retract, and at the same time pulls the mounting table 42 to move in the opposite direction to stretch the third spring 45, which drives the baffle 39 to close the V-shaped plate 32 outlet again, enclosing the vision inspection device 38 inside the V-shaped plate 32 to prevent iron filings and oil stains from contaminating the lens during processing.

[0032] Furthermore, when the continuously moving protrusion 16 passes the metal ball 22, the protrusion 16 is squeezed into the mounting groove along the inclined surface, compressing the first spring 14. At this time, the metal ball 22 and the metal block 17 will not contact each other, and the first cylinder 30 will not be triggered, thus avoiding accidental impact on the unformed workpiece. After the protrusion 16 passes, the first spring 14 automatically pushes the protrusion 16 to reset, waiting for the next detection trigger. Throughout the process, the detection and protection actions are completely automatically matched with the opening and closing mold sequence of cold heading. No additional manual intervention or additional programming to adjust the timing is required, and the mold cavity detection after each processing can be automatically completed, and abnormalities can be identified in advance.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A visual inspection device for cold-die production, characterized by, The device includes a base (3), a housing (1), and multiple visual inspection devices (38). The base (3) is provided with multiple concave molds (11) and convex molds (12). A mounting frame (2) is fixedly connected to the base (3). A movable seat (8) is slidably connected to the mounting frame (2), and the convex mold (12) is fixedly installed on the movable seat (8). A mounting seat (9) is provided on one side of the movable seat (8), and the concave mold (11) is fixedly installed on the mounting seat (9). Multiple V-shaped plates (32) are provided on the mounting frame (2). An actuation mechanism is provided between the movable seat (8) and the base (3). The actuation mechanism is used to drive the visual inspection device (38) to inspect the mold cavity after demolding. The actuation mechanism includes a protrusion (16), a first spring (14), a metal ball (22), a metal block (17), and a second spring (21). The V-shaped plate (32) is provided with an isolation mechanism for isolating oil and iron filings. The isolation mechanism includes multiple baffles (39), connecting rods (41), mounting platform (42) and third spring (45).

2. The visual inspection apparatus for cold-die production according to claim 1, wherein A motor (4) is fixedly installed on the base (3). A drive wheel (5) is coaxially fixed on the output end of the motor (4). Moving blocks (7) are symmetrically fixed on both sides of the movable seat (8). The moving blocks (7) are slidably connected to the mounting frame (2). A connecting rod (6) is rotatably connected between the moving blocks (7) and the drive wheel (5).

3. The visual inspection apparatus for cold-die production according to claim 2, wherein A partition is fixedly connected between the base (3) and the mounting bracket (2). Support plates (18) are symmetrically fixed on the base (3), and a fixing frame (20) is fixedly connected between the two support plates (18). Two parallel guide grooves (19) are opened on the support plate (18). A support rod (23) is fixedly connected to the bottom of the metal ball (22). The second spring (21) is fixedly connected between the fixing frame (20) and the support rod (23).

4. The visual inspection device for cold heading mold production according to claim 3, characterized in that, Two movable columns (24) are symmetrically fixed on the support rod (23), and the movable columns (24) are movably connected in the guide groove (19). The end of the movable column (24) is fixedly connected to a limiting ring (25), and the limiting ring (25) abuts against the support plate (18). A connecting frame (26) is fixedly connected on the base (3), and a first metal plate (27) and a second metal plate (28) are fixedly connected on the connecting frame (26).

5. The visual inspection device for cold heading mold production according to claim 4, characterized in that, The bottom of the movable seat (8) is fixedly connected to an installation block (13), an installation groove is provided in the installation block (13), a slider (15) is slidably connected in the installation groove, the first spring (14) is fixedly connected between the slider (15) and the inner wall of the installation groove, the protrusion (16) is fixedly connected to the slider (15), and the metal block (17) is fixedly connected to the protrusion (16).

6. The visual inspection device for cold heading mold production according to claim 1, characterized in that, The mounting base (9) is fixedly connected to a first cylinder (30), the output end of the first cylinder (30) is fixedly connected to an ejector block (29), and the top of the movable base (8) is fixedly connected to a support frame (10).

7. The visual inspection device for cold heading mold production according to claim 6, characterized in that, A rubber buffer seat (31) is fixedly connected to the support frame (10), and a fixing plate (34) is fixedly connected to the V-shaped plate (32). A ball head clamp (33) is installed between the fixing plate (34) and the rubber buffer seat (31).

8. The visual inspection device for cold heading mold production according to claim 7, characterized in that, The V-shaped plate (32) is provided with a second cylinder (36) and a mounting plate (37). The second cylinder (36) is fixedly installed in the V-shaped plate (32) by a cross (35). The output end of the second cylinder (36) is fixedly connected to one side of the mounting plate (37). The visual inspection device (38) is fixedly installed on the other side of the mounting plate (37). The mounting plate (37) is slidably connected in the V-shaped plate (32).

9. The visual inspection device for cold heading mold production according to claim 8, characterized in that, The baffle (39) is rotatably connected to the end of the V-shaped plate (32). One end of the connecting rod (41) is fixedly connected to the baffle (39), and the other end of the connecting rod (41) is rotatably connected to the mounting platform (42). Multiple movable frames (40) are fixedly connected to the mounting plate (37). A guide rod (44) is fixedly connected to the movable frame (40), and a third spring (45) is sleeved on the guide rod (44). The mounting platform (42) is slidably connected to the movable frame (40), and the guide rod (44) slides through the mounting platform (42). The third spring (45) is fixedly connected between the mounting platform (42) and the movable frame (40). Movable blocks (43) are symmetrically fixed on both sides of the mounting platform (42), and the movable blocks (43) are movably connected to the movable frame (40).

10. A visual inspection method for cold heading mold production, applicable to the visual inspection device for cold heading mold production as described in claim 9, characterized in that, The specific steps are as follows: S1: Start the motor (4), the motor (4) drives the drive wheel (5) to rotate, and pushes the moving block (7) to move back and forth along the mounting frame (2) through the connecting rod (6), driving the punch (12) to approach the die (11) to complete the mold closing and cold heading process. After the processing is completed, the movable seat (8) drives the punch (12) to retract and reset to complete the demolding. S2: When the movable seat (8) retracts and resets to the preset position, the protrusion (16) under the movable seat (8) moves to one side of the metal ball (22). At this time, the metal block (17) on the protrusion (16) contacts the metal ball (22), and the first cylinder (30) drives the ejector block (29) to move and pushes out the molded part in the die (11). S3: When the protrusion (16) continues to push the metal ball (22) to move, the support rod (23) below the metal ball (22) gradually moves down and stretches the second spring (21) under the action of the guide groove (19). Finally, the metal ball (22) that moves down separates from the metal block (17). The stretched second spring (21) drives the metal ball (22) to reset. The first cylinder (30) is de-energized, driving the ejector block (29) to reset. S4: When the protrusion (16) continues to move to the farthest distance, the second metal plate (28) is pushed to contact the first metal plate (27). The second cylinder (36) and the vision inspection device (38) are powered on. The second cylinder (36) drives the mounting plate (37) to move towards the baffle (39). The stretched third spring (45) resets and pulls the mounting platform (42) to move. The mounting platform (42) drives the baffle (39) to rotate through the connecting rod (41), so that the baffle (39) at the outlet of the V-shaped plate (32) gradually opens. The mounting plate (37) pushes out the internal vision inspection device (38). The activated vision inspection device (38) takes pictures of the protrusion (12) and the cavity of the demolded concave mold (11) to identify whether there are residual iron filings, oil stains and damage in the cavity. S5: After the inspection is completed, the movable seat (8) continues to drive the punch (12) to approach the die (11), the second metal sheet (28) and the first metal sheet (27) separate, the second cylinder (36) drives the mounting plate (37) and the vision inspection equipment (38) to retract, the mounting plate (37) pulls the mounting table (42) to move in the opposite direction and stretches the third spring (45) through the connecting rod (41) to drive the baffle (39) to rotate again to close the V-shaped plate (32) outlet, and isolate the vision inspection equipment (38) inside the V-shaped plate (32) to avoid iron filings and oil stains splashing and contaminating the lens during the processing; S6: The movable seat (8) continues to drive the protrusion (16) to move. The protrusion (16) abuts against the metal ball (22). Under the action of the inclined surface of the protrusion (16), the protrusion (16) is pushed into the mounting groove and the first spring (14) is compressed. During the whole process, the metal block (17) will not abut against the metal ball (22), and the first cylinder (30) will not work to prevent the unprocessed parts from being pushed out of the die (11). When the protrusion (16) and the metal ball (22) are misaligned, the compressed first spring (14) pushes the protrusion (16) to reset so that it can be used for subsequent mold cavity testing.

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