Mechanical transfer arm for the manufacture of automobile lamp covers

Abstract

The application discloses a mechanical conveying arm for automobile lampshade manufacturing and relates to the technical field of mechanical conveying arms.The mechanical conveying arm comprises a servo transverse walking type mechanical conveying arm and a controller.The servo transverse walking type mechanical conveying arm comprises a crossbeam, a slide rail 1 is symmetrically arranged on one side of the crossbeam, a main arm driving assembly and an auxiliary arm driving assembly are arranged on two groups of the slide rail 1, the auxiliary arm driving assembly is located on one side of the main arm driving assembly, a fixed plate 1 is fixedly connected to the side, opposite to the slide rail 1, of the main arm driving assembly, a through hole 1 and a sliding groove 1 are formed in the fixed plate 1, the sliding groove 1 is close to the main arm driving assembly, a cylinder 1 is arranged in the through hole 1, a slide rail 2 is slidably connected in the sliding groove 1, and the output end of the cylinder 1 is fixedly connected with a supporting plate 1.The application has the characteristics of being suitable for lampshades of various models and radii, saving the time for replacing clamps and the cost for manufacturing different models of clamps, and being high in adaptability.

Description

Technical Field

[0001] This invention relates to the field of mechanical transfer arm technology, specifically a mechanical transfer arm for manufacturing automotive lamp covers. Background Technology

[0002] With the rapid development of the automotive industry, the requirements for automated conveyor lines in its parts manufacturing are increasing. In the molding process of automotive lamp covers, a suspended conveyor system is often used as the material transfer carrier. This system uses a servo-driven horizontal mechanical conveyor arm set above the molding station as the execution unit, and uses a servo motor to drive a high-rigidity precision linear slide rail to complete the automated transfer connection between picking up the lamp cover inside the mold and placing it stably outside the mold.

[0003] However, when performing high-speed transfer, the rigid clamping mechanism of existing overhead conveyor systems is difficult to adapt to the various curvatures of lamp covers: excessive clamping force will cause thin-walled lamp covers to break, while insufficient clamping force will cause the workpiece to slip and fall due to the inertia of the conveyor line starting and stopping, which seriously affects the conveying stability of the overhead chain; at the same time, when switching between different models of products, replacing them with special fixtures that are suitable for the curvature not only causes the overhead conveyor line to be shut down for a long time, but also the special fixtures are expensive to manufacture, which greatly restricts the overall conveying efficiency of the production line.

[0004] Therefore, it is essential to design a mechanical transfer arm for automotive lamp cover manufacturing that is suitable for various models and curvatures, highly adaptable, and saves replacement time and costs. Summary of the Invention

[0005] The purpose of this invention is to provide a mechanical transfer arm for manufacturing automotive lamp covers, in order to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a mechanical transmission arm for manufacturing automotive lamp covers, comprising a servo-driven lateral mechanical transmission arm and a controller, wherein the servo-driven lateral mechanical transmission arm includes a crossbeam, and a set of slide rails are symmetrically arranged on one side of the crossbeam, and a main arm drive assembly and a secondary arm drive assembly are arranged on the two sets of slide rails, wherein the secondary arm drive assembly is located on one side of the main arm drive assembly. The main boom drive assembly is fixedly connected to a fixing plate on the side opposite to the slide rail. The fixing plate has a through hole and a slide groove. The slide groove is close to the main boom drive assembly. A cylinder is installed in the through hole. The slide rail is slidably connected to the slide groove. The output end of the cylinder is fixedly connected to a support plate. The slide rail is fixedly connected to the support plate below. A fixing block is fixedly connected to the bottom of the support plate. A through square hole is opened on the fixing block. A motor is fixedly connected to the fixing block near the main boom drive assembly. A shaft is fixedly connected to the output end of the motor. The shaft is located inside the through square hole and both ends of the shaft are connected to the bearings in the through square hole. A connecting rod is fixedly connected to the side of the shaft away from the auxiliary boom drive assembly. A cross plate is fixedly connected to the other end of the connecting rod. The diameter of the connecting rod is smaller than the height of the through square hole.

[0007] According to the above technical solution, a fixing block 2 and two sets of lead screw motors 2 are fixedly connected on the other side of the horizontal plate 1. The fixing block 2 is located between the two sets of lead screw motors 2. A positioning rangefinder 1 is fixedly connected above the fixing block 2 in the middle. A part of the positioning rangefinder 1 is fixedly connected to the horizontal plate 1. The positioning rangefinder 1 is electrically connected to the controller. The positioning rangefinder includes 3D vision and distance measurement functions.

[0008] According to the above technical solution, both sides of the fixed block two are connected to the lead screw with bearings. The other end of each set of lead screws is fixedly connected to the output end of the lead screw motor two. Each set of lead screws is threadedly connected to the displacement block. Each set of displacement blocks and the side of the fixed block two away from the horizontal plate is threadedly connected to the universal swing vacuum suction cup assembly one.

[0009] According to the above technical solution, the universal swing vacuum suction cup assembly includes a suction tube, a pressure sensor is provided on the suction tube, the pressure sensor is electrically connected to the controller, and the other end of the suction tube is fixedly connected to the main suction pipe, and the other end of the main suction pipe is fixedly connected to the vacuum pump.

[0010] According to the above technical solution, the auxiliary arm drive assembly is fixedly connected to the second fixing plate near the side opposite to the first slide rail. The second fixing plate is fixedly connected to two sets of anti-collision silicone strips near the first fixing plate. The two sets of anti-collision silicone strips are symmetrically arranged. Each set of anti-collision silicone strips is equipped with a thin film pressure sensor. The thin film pressure sensor is electrically connected to the controller.

[0011] According to the above technical solution, the fixed plate 2 has a through hole 2 and a slide groove 2. The slide groove 2 is close to the auxiliary arm drive assembly. The through hole 2 is equipped with a cylinder 2. The slide groove 2 is slidably connected to a slide rail 3. The output end of the cylinder 2 is fixedly connected to a support plate 2. The slide rail 3 is fixedly connected to the support plate 2 below.

[0012] According to the above technical solution, a fixing block three is fixedly connected below the support plate two, and a through square hole two is opened on the fixing block three. An integrated motor three is installed in the through square hole two, and the output end of the integrated motor three is fixedly connected to the horizontal plate two.

[0013] According to the above technical solution, the fixed block three is fixedly connected to the support plate three on the side of the horizontal plate two, and the positioning rangefinder two is fixedly connected to the support plate three away from the fixed block three. The positioning rangefinder two is electrically connected to the controller. A limiting strip is fixedly connected to the middle of the end of the support plate three away from the fixed block three. The cross-section of the limiting strip is a right-angled pentagon. The positioning rangefinder includes 3D vision and distance measurement functions.

[0014] According to the above technical solution, the horizontal plate two and the integrated motor three are threadedly connected to three sets of universal swing vacuum suction cup assemblies two on opposite sides, and the three sets of universal swing vacuum suction cup assemblies two are evenly arranged on the horizontal plate two. Each of the two universal swing vacuum suction cup assemblies includes a suction tube, a pressure sensor, and a controller. The other end of each suction tube is fixedly connected to a main suction pipe, and the other end of the main suction pipe is fixedly connected to a vacuum pump.

[0015] According to the above technical solution, the universal swing vacuum suction cup assembly 2 and the universal swing vacuum suction cup assembly 1 are the same type of accessory, and their lengths and sizes are the same. The second horizontal plate is shorter than the first horizontal plate.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by setting up a universal swing vacuum suction cup assembly 1, a pressure sensor 1, a positioning rangefinder 1, a positioning rangefinder 2, a universal swing vacuum suction cup assembly 2, and a pressure sensor 2, can be applied to lampshades of various models and curvatures, with high adaptability and saving replacement time and cost. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a mechanical conveying arm for manufacturing automotive lamp covers according to the present invention. Figure 2 This is a partial enlarged view of the present invention; Figure 3 This is an enlarged view of the main arm in this invention; Figure 4 In this invention Figure 3 Enlarged view of region A in the middle; Figure 5 In this invention Figure 4 Rear view; Figure 6 This is an enlarged view of the auxiliary arm in this invention; Figure 7 In this invention Figure 6Enlarged view of region B in the middle; Figure 8 In this invention Figure 7 Enlarged view of region C in the middle; Figure 9 This is a diagram illustrating the horizontal use effect of the mechanical conveyor arm in this invention. Figure 10 In this invention Figure 9 Enlarged view of region D in the middle; Figure 11 This is a diagram illustrating the effect of rotating the mechanical conveyor arm in this invention. Figure 12 In this invention Figure 9 A schematic diagram of adsorption in a plane; Figure 13 This is a schematic diagram illustrating the use of the limiting strip in this invention; In the diagram: 1. Servo-driven horizontal mechanical conveyor arm; 2. Crossbeam; 3. Slide rail one; 4. Main arm drive assembly; 5. Secondary arm drive assembly; 6. Fixing plate one; 7. Through hole one; 8. Slide groove one; 9. Slide rail two; 10. Cylinder one; 11. Support plate one; 12. Fixing block one; 13. Motor one; 14. Horizontal plate one; 15. Fixing block two; 16. Lead screw one; 17. Displacement block; 18. Lead screw motor two; 19. Universal swing vacuum suction cup assembly one; 20. Suction pipe one; 21. Air pressure sensor one; 22. 1. Positioning rangefinder 1; 23. Through square hole 1; 24. Shaft; 25. Connecting rod; 26. Fixing plate 2; 27. Through hole 2; 28. Slide groove 2; 29. ​​Cylinder 2; 30. Slide rail 3; 31. Support plate 2; 32. Fixing block 3; 33. Through square hole 2; 34. Integrated motor 3; 35. Support plate 3; 36. Positioning rangefinder 2; 37. Horizontal plate 2; 38. Universal swing vacuum suction cup assembly 2; 39. Suction tube 2; 40. Air pressure sensor 2; 41. Anti-collision silicone strip; 42. Limiting strip. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-13 The present invention provides a technical solution: a mechanical transmission arm for manufacturing automotive lamp covers, including a servo-driven horizontal mechanical transmission arm 1 and a controller. The servo-driven horizontal mechanical transmission arm 1 includes a crossbeam 2. A slide rail 3 is symmetrically arranged on one side of the crossbeam 2. A main arm drive assembly 4 and a secondary arm drive assembly 5 are arranged on the two sets of slide rails 3. The secondary arm drive assembly 5 is located on one side of the main arm drive assembly 4. It should be added that the servo-driven horizontal mechanical conveyor arm 1, the main arm drive assembly 4, and the auxiliary arm drive assembly 5 are all existing technologies. Servo-driven lateral mechanical conveyor arm 1 is an automated conveying device that uses a servo motor as a power source and performs reciprocating lateral movement along a linear guide rail. It is widely used in injection molding extraction, material handling and assembly line connection, and is an important execution unit for realizing the flexibility of automated production lines. The main arm drive assembly 4 and the auxiliary arm drive assembly 5 are typically driven by independent servo motors, rather than sharing a power source. This design allows the two arms to move in tandem or to operate independently, each with precise control over its position and speed.

[0020] The main boom drive assembly 4 is fixedly connected to the side opposite to the slide rail 3 by a fixing plate 6. The fixing plate 6 has a through hole 7 and a slide groove 8. The slide groove 8 is close to the main boom drive assembly 4. A cylinder 10 is installed in the through hole 7. The slide rail 2 9 is slidably connected in the slide groove 8. The output end of the cylinder 10 is fixedly connected to the support plate 11. The slide rail 2 9 is fixedly connected to the support plate 11 below. A fixing block 12 is fixedly connected below the support plate 11. A through square hole 23 is opened on the fixing block 12. A motor 13 is fixedly connected to the side of the fixing block 12 near the main boom drive assembly 4. The output end of the motor 13 is fixedly connected to the shaft 24. The shaft 24 is located in the through square hole 23, and both ends of the shaft 24 are connected to the bearings of the through square hole 23. A connecting rod 25 is fixedly connected to the side of the shaft 24 away from the auxiliary boom drive assembly 5. The other end of the connecting rod 25 is fixedly connected to the cross plate 14. The diameter of connecting rod 25 is smaller than the height of the through square hole 23.

[0021] On the other side of the horizontal plate 14, a fixing block 2 15 and two sets of lead screw motors 2 18 are fixedly connected. The fixing block 2 15 is located between the two sets of lead screw motors 2 18. A positioning rangefinder 1 22 is fixedly connected above the fixing block 2 15. A part of the positioning rangefinder 1 22 is fixedly connected to the horizontal plate 14. The positioning rangefinder 1 22 is electrically connected to the controller. The Positioning Rangefinder 122 includes 3D vision and distance measurement functions.

[0022] It should be added that the positioning rangefinder-22 is an existing technology that integrates 3D vision and direct ranging functions. It can obtain the three-dimensional spatial coordinates and depth information of the target object through stereo vision or structured light technology, and can accurately measure the distance using sensors such as lasers or ultrasonic waves. After the two types of data are fused by algorithms, high-precision spatial positioning, environmental modeling and obstacle perception can be achieved, which can be widely used in fields such as robot navigation, industrial measurement and intelligent security.

[0023] Both sides of the fixed block 15 are connected to the lead screw 16 with bearings. The other end of each set of lead screw 16 is fixedly connected to the output end of the lead screw motor 18. Each set of lead screw 16 is threaded to the displacement block 17. Each set of displacement block 17 and the side of the fixed block 15 away from the horizontal plate 14 are threaded to the universal swing vacuum suction cup assembly 19. It should be added that the omnidirectional swing vacuum suction cup assembly 19 is existing technology. Its core lies in the fact that the body can achieve omnidirectional swing of ±15° to ±30° through a ball joint structure, which can automatically conform to the inclined or uneven workpiece surface. Moreover, the spring set on the top plays two key roles: first, it provides vertical buffer stroke to offset the impact force during downward pressure and protect the workpiece and suction cup; second, it provides reset torque to ensure that the suction cup can automatically return to the center after detaching from the workpiece and maintain the same gripping posture for the next time. This combination of "omnidirectional swing + spring buffer" makes it particularly suitable for handling sheet metal, castings or rough workpieces with curved surfaces, which can effectively prevent air leakage and extend the suction cup life.

[0024] The universal swing vacuum suction cup assembly 19 includes a suction tube 20, on which a pressure sensor 21 is installed. The pressure sensor 21 is electrically connected to the controller. The other end of the suction tube 20 is fixedly connected to the main suction pipe (not shown in the figure), and the other end of the main suction pipe is fixedly connected to the vacuum pump (not shown in the figure).

[0025] It should be added that the pressure sensor 21 is existing technology. In the vacuum system, it acts like an "electronic eye," sensing the rarefaction of gas within the cavity in real time and rapidly converting the physical pressure (absolute or negative pressure) into a standard voltage or current signal, thereby achieving millisecond-level dynamic monitoring of the vacuum level. It not only allows you to read the current values ​​on the control panel at all times, but also works with the controller to set upper and lower limit thresholds for different models of automotive lamp cover workpieces. These upper and lower limit thresholds define the vacuum range for that workpiece. Once the vacuum level deviates from the process requirements due to leakage or gas source fluctuations, the system will immediately alarm or automatically replenish the vacuum, ensuring that critical processes such as vacuum bonding, material drying, or vacuum coating remain in a precisely controllable and stable state.

[0026] The auxiliary boom drive assembly 5 is fixedly connected to the fixing plate 26 on the side opposite to the slide rail 3. The fixing plate 26 is fixedly connected to two sets of anti-collision silicone strips 41 on the side near the fixing plate 6. The two sets of anti-collision silicone strips 41 are symmetrically arranged. Each set of anti-collision silicone strips 41 is equipped with a thin film pressure sensor (not shown in the figure). The thin film pressure sensor is electrically connected to the controller. It should be added that thin-film pressure sensors are existing technology; a tiny pressure is generated when an object is placed on them, causing a change in resistance.

[0027] A through hole 27 and a slide groove 28 are provided on the fixed plate 26. The slide groove 28 is close to the auxiliary arm drive assembly 5. A cylinder 29 is installed in the through hole 27. A slide rail 30 is slidably connected in the slide groove 28. The output end of the cylinder 29 is fixedly connected to the support plate 21. The slide rail 30 is fixedly connected to the support plate 21 below.

[0028] A fixing block 32 is fixedly connected below the support plate 2 31. A through square hole 2 33 is opened on the fixing block 32. An integrated motor 34 is installed in the through square hole 2 33. The output end of the integrated motor 34 is fixedly connected to the horizontal plate 2 37.

[0029] It should be added that the integrated motor 334 is an existing technology. It is a special direct drive motor that highly couples rotary motion with linear reciprocating motion. Its core feature is that the output shaft (rotor shaft) runs through the entire stator cavity of the motor. It can not only rotate at high speed around its own axis, but also achieve precise extension or reciprocating displacement along the axial direction, forming a two-degree-of-freedom composite motion output of "rotation + translation".

[0030] The support plate 35 is fixedly connected to the side of the fixed block 32 near the horizontal plate 2 37. The positioning rangefinder 2 36 is fixedly connected to the support plate 35 away from the fixed block 32. The positioning rangefinder 2 36 is electrically connected to the controller. The middle of the end of the support plate 35 away from the fixed block 32 is fixedly connected to the limiting strip 42. The cross-section of the limiting strip 42 is a right-angled pentagon. The positioning rangefinder II 36 includes 3D vision and distance measurement functions.

[0031] The horizontal plate 2 37 and the integrated motor 3 34 are threadedly connected to three sets of universal swing vacuum suction cup assemblies 2 38 on the opposite side. The three sets of universal swing vacuum suction cup assemblies 2 38 are evenly arranged on the horizontal plate 2 37. Each set of universal swing vacuum suction cup assembly 2 38 includes suction tube 2 39, on which air pressure sensor 2 40 is installed. Air pressure sensor 2 40 is electrically connected to the controller. The other end of suction tube 2 39 is fixedly connected to suction main pipe (not shown in the figure), and the other end of suction main pipe is fixedly connected to vacuum pump (not shown in the figure).

[0032] The universal swing vacuum suction cup assembly 238 and the universal swing vacuum suction cup assembly 19 are the same type of accessory, and their lengths and sizes are identical. The length of horizontal plate 2 (37) is shorter than that of horizontal plate 1 (14).

[0033] Working principle: Once a car headlight cover is formed by injection molding in a mold using large equipment, a servo-driven horizontal mechanical transfer arm 1 is used to remove and transfer the finished headlight cover.

[0034] When using the servo-guided horizontal mechanical conveyor arm 1 to remove the processed car headlight cover: First, the main boom drive assembly 4 and the auxiliary boom drive assembly 5 move together along the slide rail 3 to one end of the crossbeam 2. The movement of the main boom drive assembly 4 and the auxiliary boom drive assembly 5 causes all the parts connected to them to move together. Next, cylinder 10 starts and its output end moves downward, causing slide rail 29 to move downward along slide groove 8. The two work together to make it more stable and the force is more even. Simultaneously, the output end of cylinder 10 and slide rail 29 drive support plate 11 to move downward. Support plate 11 drives fixed block 12 to move downward. Fixed block 12 drives its related parts to move downward in sync until positioning rangefinder 2 36 initially scans the automotive lamp cover workpiece and stops. The positioning rangefinder-22 performs 3D vision scanning on the automotive lamp cover workpiece to obtain the workpiece's position and size data, and to find the centerline. After the scan is complete, the data is transmitted to the controller.

[0035] Restart cylinder 10, and the output end moves up or down, causing slide rail 29 and support plate 11 to move down. Support plate 11 causes fixed block 12 to move, and fixed block 12 causes related parts to move synchronously until the three sets of universal swing vacuum suction cup assemblies 19 stop horizontally with the same central axis and the quarter-division line on the car lamp cover. Then start the main arm drive assembly 4, which drives all the parts connected to it to move toward the automotive lamp cover workpiece until the universal swing vacuum suction cup assembly 19 is attached to the automotive lamp cover workpiece. The omnidirectional swing vacuum suction cup assembly 19 achieves omnidirectional swing through the ball joint structure at the bottom, so as to actively conform to the inclined or irregular surface of the workpiece, while the spring above is compressed when the suction cup is pressed down, absorbing the vertical impact force and providing a flexible buffer stroke to prevent hard collision damage to the workpiece.

[0036] As the positioning rangefinder 22 scans the automotive lamp cover workpiece, cylinder 29 is activated. Its output end moves downward, causing slide rail 30 to move downward along slide groove 28. The combination of the two makes it more stable and the force more even. Simultaneously, the output end of cylinder 29 and slide rail 30 move downward, driving support plate 21 to move downward. Support plate 231 moves downward, driving fixed block 32 to move downward. Fixed block 32 drives its related parts to move downward synchronously until the three sets of universal swing vacuum suction cup assemblies 238 stop horizontally with the same central axis and the lower quarter-division line of the automotive lamp cover.

[0037] The positioning rangefinder II 36 detects the distance to the automotive lamp cover workpiece and obtains the workpiece's position. Start the auxiliary boom drive assembly 5, which will move all the parts connected to it toward the automotive lamp cover workpiece.

[0038] The main arm drive assembly 4 drives the universal swing vacuum suction cup assembly 19 to stop horizontally with the same central axis as the lower quarter line of the car headlight cover. Then the auxiliary arm drive assembly 5 drives the universal swing vacuum suction cup assembly 38 to stop horizontally with the same central axis as the lower quarter line of the car headlight cover. The upper and lower suction makes the suction effect more firm and stable. Furthermore, the universal swing vacuum suction cup assembly 19 is positioned on the quarter-divided line of the car headlight cover, and the universal swing vacuum suction cup assembly 38 is positioned on the lower quarter-divided line of the car headlight cover. This arrangement makes the force more even and the adsorption effect better.

[0039] Implementation method 1: When the automotive lamp cover workpiece is a gently curved plate.

[0040] If the anti-collision silicone strip 41 is in contact with the fixed plate 6 on the side closest to the fixed plate 6, it means that the fixed plate 26 has no further distance to move towards the fixed plate 6. At the same time, the anti-collision silicone strip 41 prevents the fixed plate 26 from moving too much and squeezing the fixed plate 6, which could cause damage. The auxiliary arm drive assembly 5 is forcibly stopped. If there is still a gap between the universal swing vacuum suction cup assembly 2 38 and the automotive lamp cover workpiece at this time, the integrated motor 3 34 is started. Since the integrated motor 3 34 is a special direct drive motor that highly couples rotary motion and linear reciprocating motion, it only drives the linear reciprocating motion module at this time, driving all the parts connected to it to move linearly towards the automotive lamp cover workpiece until the universal swing vacuum suction cup assembly 2 38 is attached to the front of the automotive lamp cover workpiece. The integrated motor 34 is activated based on whether the side of the anti-collision silicone strip 41 close to the fixed plate 6 is in contact with the fixed plate 6, and whether there is still a gap between the universal swing vacuum suction cup assembly 38 and the automotive lamp cover workpiece. Therefore, the integrated motor 34 plays the role of compensating for the length of the automotive lamp cover workpiece.

[0041] If the anti-collision silicone strip 41 is not attached to the fixing plate 6, and the universal swing vacuum suction cup assembly 38 is attached to the automotive lamp cover workpiece, then there is no need to start the integrated motor 34.

[0042] Start the vacuum pump, and through the main suction pipe and the three sets of suction pipes 1-20 and 2-39, respectively extract the air from the corresponding universal swing vacuum suction cup assembly 1-19 and universal swing vacuum suction cup assembly 2-38, so that the universal swing vacuum suction cup assembly 1-19 and universal swing vacuum suction cup assembly 2-38 create a negative pressure between the universal swing vacuum suction cup assembly 1-19 and universal swing vacuum suction cup assembly 2-38 and the automotive lamp cover workpiece, so that the universal swing vacuum suction cup assembly 1-19 and universal swing vacuum suction cup assembly 2-38 tightly adhere to the surface of the workpiece. At this time, the compression of the spring can also reflect the adhesion force. Meanwhile, the pressure sensor 21 connected to the universal swing vacuum suction cup assembly 19 and the pressure sensor 40 connected to the universal swing vacuum suction cup assembly 38 constantly monitor and ensure that the vacuum level is within the range.

[0043] Implementation Method 2: When the automotive lamp cover workpiece is an irregularly shaped curved plate.

[0044] When the anti-collision silicone strip 41 is attached to the fixing plate 6, the auxiliary arm drive assembly 5 is forcibly stopped. If there is still a gap between the universal swing vacuum suction cup assembly 38 and the automotive lamp cover workpiece at this time, the integrated motor 34 is started, driving all the parts connected to it to move linearly toward the automotive lamp cover workpiece. At the same time, the integrated motor 34 rotates initially according to the curvature of the automotive lamp cover workpiece, driving all the parts connected to it to rotate synchronously toward the automotive lamp cover workpiece. Since the middle of the end of the support plate 35 away from the fixed block 32 is fixedly connected to the limiting strip 42, and the cross-section of the limiting strip 42 is a right-angled pentagon, the rotation degree of the horizontal plate 2 37 is ±45°. This can effectively prevent excessive rotation, which could cause the connection between the suction tube 2 39 and the suction main tube to break, thereby affecting the negative pressure adsorption effect of the universal swing vacuum suction cup assembly 2 38. At the same time, it will not block the positioning rangefinder 2 36, thus affecting its use. Secondly, it can also prevent the horizontal plate 2 37 from hitting the horizontal plate 1 14, ensuring its normal use.

[0045] If the anti-collision silicone strip 41 is not attached to the fixing plate 6, then it is only necessary to start the rotation drive of the integrated motor 34 to drive all the parts connected to it to rotate synchronously towards the automotive lamp cover workpiece, and the universal swing vacuum suction cup assembly 38 is attached to the automotive lamp cover workpiece.

[0046] Start the vacuum pump, and through the main suction pipe and the three sets of suction pipes 1-20 and 2-39, respectively, draw air from the corresponding universal swing vacuum suction cup assembly 1-19 and universal swing vacuum suction cup assembly 2-38, so that the universal swing vacuum suction cup assembly 1-19 and universal swing vacuum suction cup assembly 2-38 create negative pressure between the universal swing vacuum suction cup assembly 1-19 and universal swing vacuum suction cup assembly 2-38 and the automotive lamp cover workpiece, so that the universal swing vacuum suction cup assembly 1-19 and universal swing vacuum suction cup assembly 2-38 tightly adsorb the workpiece surface. At this time, the spring provides vertical buffer stroke to offset the impact force when pressing down and protect the workpiece and suction cup. Meanwhile, the pressure sensor 21 connected to the universal swing vacuum suction cup assembly 19 and the pressure sensor 40 connected to the universal swing vacuum suction cup assembly 38 constantly monitor and ensure that the vacuum level is within the range.

[0047] The above operations are only for different shaped automotive lamp cover workpieces. The universal swing vacuum suction cup assembly 19 and universal swing vacuum suction cup assembly 38 are used to judge and adjust the adsorption in turn. This can reduce the possibility of air leakage after vacuuming, which would cause the adsorption to be weak and fall off during movement.

[0048] When barometric pressure sensor 21 and barometric pressure sensor 40 exhibit the following conditions: Scenario 1: When pressure sensor 21 displays one or more warnings indicating that the vacuum level is not within the range, pressure sensor 40 indicates that the vacuum level is within the range.

[0049] Stop the vacuum pump, start the motor 13 to rotate, which drives the shaft 24 to rotate. The rotation of the shaft 24 drives the connecting rod 25 to rotate. Since the diameter of the connecting rod 25 is smaller than the height of the through square hole 23, the rotation angle of the connecting rod 25 is limited to ±10°. Adjust it according to whether the upper quarter of the automotive lamp cover workpiece is convex or concave. After adjustment, start the vacuum pump again. If multiple pressure sensors 21 show abnormalities, continue the previous operation and readjust the angle until the vacuum level is within the range.

[0050] If only one set of air pressure sensors 21 shows an abnormality, it is determined that the universal swing vacuum suction cup assembly 19 connected to it is damaged. After first adsorbing, demolding and transferring the automotive lamp cover workpiece, rotate and remove the universal swing vacuum suction cup assembly 19 and replace it with a new universal swing vacuum suction cup assembly 19.

[0051] Scenario 2: When pressure sensor 40 displays one or more prompts indicating that the vacuum level is not within the range, pressure sensor 21 indicates that the vacuum level is within the range.

[0052] Stop the vacuum pump, start the integrated motor 34 rotary drive, and drive all the parts connected to it to rotate synchronously toward the automotive lamp cover workpiece. After adjustment, start the vacuum pump again. By adjusting the settings, a negative pressure can be created between the three sets of universal swing vacuum suction cup assemblies 19 and the automotive lamp cover workpiece, making the adhesion more secure.

[0053] If multiple pressure sensors 40 show abnormalities, it indicates that a negative pressure state has not been fully formed between the universal swing vacuum suction cup assembly 19 and the automotive lamp cover workpiece, and there is an air leakage. In this case, continue the previous operation, readjust the angle, until the vacuum level is within the range.

[0054] If only one set of air pressure sensors 40 shows an abnormality, it is determined that the universal swing vacuum suction cup assembly 38 connected to it is damaged. After first adsorbing, demolding and transferring the automotive lamp cover workpiece, rotate and remove the universal swing vacuum suction cup assembly 38 and replace it with a new universal swing vacuum suction cup assembly 38.

[0055] Scenario 3: Multiple abnormalities were observed in both barometric pressure sensor 21 and barometric pressure sensor 40.

[0056] First, increase the flow rate of the vacuum pump. If the pressure sensor 121 or pressure sensor 240 returns to normal, the adsorption process is complete, and the automotive lamp cover workpiece can be transferred. If multiple abnormalities are still detected by pressure sensor 21 or pressure sensor 40, it is determined that there is an abnormality in the main suction pipe. In this case, work should be stopped, and the components should be checked sequentially to prevent subsequent situations such as the automotive lamp cover falling off.

[0057] When using a servo-driven horizontal mechanical transfer arm 1 to transfer automotive lamp cover workpieces after adsorption, First, cylinder 10 and cylinder 29 start synchronously at the same speed, moving the entire automotive lamp cover workpiece upwards until the bottom of the automotive lamp cover workpiece is higher than the top of the injection mold, ensuring that the automotive lamp cover workpiece will not be damaged by impact.

[0058] Next, the upper beam 2 of the servo-guided horizontal mechanical conveyor arm 1 moves as a whole. During the movement, the following situations may occur: Scenario 1: A single abnormality occurs in either barometric pressure sensor 21 or barometric pressure sensor 40.

[0059] The judgment is consistent whether the automotive lamp cover workpiece is a gently curved plate or an irregularly shaped curved plate.

[0060] Specifically, if it is determined that the universal swing vacuum suction cup assembly 19 or universal swing vacuum suction cup assembly 238 connected to it is damaged, then after first adsorbing, demolding and transferring the automotive lamp cover workpiece, rotate and remove the universal swing vacuum suction cup assembly 19 or universal swing vacuum suction cup assembly 238, and replace it with a new universal swing vacuum suction cup assembly 19 or universal swing vacuum suction cup assembly 238.

[0061] Scenario 2: Both barometric pressure sensor 21 and barometric pressure sensor 40 exhibit multiple abnormalities.

[0062] The judgment is consistent whether the automotive lamp cover workpiece is a gently curved plate or an irregularly shaped curved plate.

[0063] Issue an alarm immediately to prevent a fall and injury, and stop moving immediately.

[0064] First, determine whether the automotive headlight cover workpiece has slid downwards. If it has, it means that the dynamic inertial force has exceeded the suction limit. Optimize the robot's motion parameters in the PLC program, appropriately reduce the acceleration during startup and shutdown, and ensure that the actual suction force can overcome the weight of the automotive lamp cover workpiece and the dynamic inertial force.

[0065] Next, determine whether the overall leakage volume increases instantaneously due to slight deformation during movement, and whether the vacuum pump flow rate is insufficient, preventing the system from replenishing the airflow in time. Then, calculate the total leakage volume of the system and ensure that the maximum flow rate of the vacuum generator is greater than twice the total leakage volume. Check whether the main pipeline is too thin or too long, and replace it with a high-flow vacuum generator if necessary to increase the flow rate of the vacuum pump.

[0066] Finally, check whether the universal structure of universal swing vacuum suction cup assembly 19 and universal swing vacuum suction cup assembly 238 is stuck, causing the dynamic seal to fail, thus causing the suction cup edge to lift up under dynamic force, destroying the sealing environment and causing air leakage.

[0067] By sequentially judging, eliminating, or adjusting, the adsorption effect of the automotive lamp cover workpiece during movement is ensured, reducing the possibility of it falling off.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0069] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mechanical conveyor arm for manufacturing automotive lamp covers, comprising a servo-driven traversing mechanical conveyor arm (1), a controller, a first horizontal plate (14), and a second horizontal plate (37). A fixing block 2 (15) and two sets of lead screw motors 2 (18) are fixedly connected on one side of the horizontal plate 1 (14). The fixing block 2 (15) is located between the two sets of lead screw motors 2 (18). A positioning rangefinder 1 (22) is fixedly connected above the fixing block 2 (15). A part of the positioning rangefinder 1 (22) is fixedly connected to the horizontal plate 1 (14). The positioning rangefinder 1 (22) is electrically connected to the controller. The positioning rangefinder (22) includes 3D vision and distance measurement functions; Both sides of the fixed block two (15) are connected to the lead screw (16) by bearings. The other end of each set of lead screws (16) is fixedly connected to the output end of the lead screw motor two (18). Each set of lead screws (16) is threadedly connected to the displacement block (17). Each set of displacement blocks (17) and fixed block two (15) are threadedly connected to the universal swing vacuum suction cup assembly one (19) on the side away from the horizontal plate one (14).

2. A mechanical transfer arm for the manufacture of automotive lamp covers as claimed in claim 1, wherein, The universal swing vacuum suction cup assembly (19) includes a suction tube (20), a pressure sensor (21) is provided on the suction tube (20), the pressure sensor (21) is electrically connected to the controller, the other end of the suction tube (20) is fixedly connected to the suction main pipe, and the other end of the suction main pipe is fixedly connected to the vacuum pump.

3. A mechanical transfer arm for the manufacture of automotive lampshades according to claim 2, characterized in that, Three sets of universal swing vacuum suction cup assemblies (38) are threadedly connected to one side of the horizontal plate (37), and the three sets of universal swing vacuum suction cup assemblies (38) are evenly arranged on the horizontal plate (37). Each of the two universal swing vacuum suction cup assemblies (38) includes a suction tube (39), on which a pressure sensor (40) is provided. The pressure sensor (40) is electrically connected to the controller. The other end of the suction tube (39) is fixedly connected to the main suction pipe, and the other end of the main suction pipe is fixedly connected to the vacuum pump.

4. A mechanical conveying arm for manufacturing automotive lamp covers according to claim 3, characterized in that, The servo-guided horizontal mechanical transmission arm (1) includes a crossbeam (2), and slide rails (3) are symmetrically arranged on one side of the crossbeam (2). The main arm drive assembly (4) and the auxiliary arm drive assembly (5) are arranged on the two sets of slide rails (3). The auxiliary arm drive assembly (5) is located on one side of the main arm drive assembly (4). The main boom drive assembly (4) is fixedly connected to a fixing plate (6) on the side opposite to the slide rail (3). The fixing plate (6) has a through hole (7) and a slide groove (8). The slide groove (8) is close to the main boom drive assembly (4). A cylinder (10) is installed in the through hole (7). A slide rail (9) is slidably connected in the slide groove (8). The output end of the cylinder (10) is fixedly connected to a support plate (11). The support plate (11) is fixedly connected below the slide rail (9).

5. A mechanical conveying arm for manufacturing automotive lamp covers according to claim 4, characterized in that, The support plate (11) is fixedly connected to the bottom of the fixing block (12), and the fixing block (12) has a through square hole (23). The fixing block (12) is fixedly connected to the motor (13) on the side near the main arm drive assembly (4). The output end of the motor (13) is fixedly connected to the shaft (24). The shaft (24) is located in the through square hole (23), and both ends of the shaft (24) are connected to the bearings of the through square hole (23). The shaft (24) is fixedly connected to the connecting rod (25) on the side away from the auxiliary arm drive assembly (5). The other end of the connecting rod (25) is fixedly connected to the cross plate (14). The diameter of the connecting rod (25) is smaller than the height of the through square hole (23).

6. A mechanical conveying arm for manufacturing automotive lamp covers according to claim 5, characterized in that, The auxiliary arm drive assembly (5) is fixedly connected to the second fixing plate (26) on the side opposite to the first slide rail (3). The second fixing plate (26) is fixedly connected to two sets of anti-collision silicone strips (41) on the side near the first fixing plate (6). The two sets of anti-collision silicone strips (41) are symmetrically arranged. Each set of anti-collision silicone strips (41) is provided with a thin film pressure sensor. The thin film pressure sensor is electrically connected to the controller.

7. A mechanical conveying arm for manufacturing automotive lamp covers according to claim 6, characterized in that, The fixed plate 2 (26) has a through hole 2 (27) and a slide groove 2 (28). The slide groove 2 (28) is close to the auxiliary arm drive assembly (5). The through hole 2 (27) is equipped with a cylinder 2 (29). The slide groove 2 (28) is slidably connected to a slide rail 3 (30). The output end of the cylinder 2 (29) is fixedly connected to a support plate 2 (31). The slide rail 3 (30) is fixedly connected to the support plate 2 (31) below.

8. A mechanical conveying arm for manufacturing automotive lamp covers according to claim 7, characterized in that, The support plate 2 (31) is fixedly connected to the fixing block 3 (32) below. The fixing block 3 (32) has a through square hole 2 (33). An integrated motor 3 (34) is installed in the through square hole 2 (33). The output end of the integrated motor 3 (34) is fixedly connected to the horizontal plate 2 (37).

9. A mechanical conveying arm for manufacturing automotive lamp covers according to claim 8, characterized in that, The fixed block three (32) is fixedly connected to the support plate three (35) on the side of the horizontal plate two (37). The positioning rangefinder two (36) is fixedly connected to the support plate three (35) away from the fixed block three (32). The positioning rangefinder two (36) is electrically connected to the controller. The middle of the end of the support plate three (35) away from the fixed block three (32) is fixedly connected to the limiting strip (42). The cross-section of the limiting strip (42) is a right-angled pentagon. The positioning rangefinder 2 (36) includes 3D vision and distance measurement functions.

10. A mechanical conveying arm for manufacturing automotive lamp covers according to claim 9, characterized in that, The universal swing vacuum suction cup assembly 2 (38) and the universal swing vacuum suction cup assembly 1 (19) are the same type of accessory, and their lengths and sizes are the same. The length of the second horizontal plate (37) is shorter than that of the first horizontal plate (14).

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