Intelligent feeding system of quick-change lock automatic assembly line

Abstract

The invention relates to the technical field of production and transportation, in particular to an intelligent feeding system of a quick-change lock automatic assembly line, which is mounted on the left side of an automatic assembly line body and comprises a base, a staggered feeding table, an oil spraying gun, a mechanical arm, an electric push rod, a mounting frame, a detection assembly, a clamping jaw and a permanent magnet, the oil spraying gun and the mechanical arm are connected to the top of the base, the electric push rod is connected to the right side of the end of the mechanical arm, the mounting frame is connected to the end of the mechanical arm, the lower end of the electric push rod penetrates through the mechanical arm to be connected with the mounting frame, the detection assembly is connected to the mounting frame, and the clamping jaw is connected to the lower side of the detection assembly. The permanent magnet is connected to the upper side of the interior of the detection assembly, the permanent magnet is matched with the rotating nut to carry out individualized difference measurement, the measurement result and electronic weighing are verified, and the purpose of improving the detection precision is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of production and transportation, and particularly to an intelligent feeding system for a quick-change lock automatic assembly line. Background Art

[0002] A quick-change lock is a device that can be replaced or locked in a short time, and is widely used in safety doors that are often opened and closed in machining. The quick-change lock is mainly composed of multiple parts such as a rotating nut, a sleeve, and a wear-resistant washer, and is automatically assembled through an automatic assembly line. The rotating nut feeding system is an important part of the automatic assembly line.

[0003] The rotating nut feeding system mainly performs feeding operations through a robotic arm cooperating with a gripper. During the feeding process, in order to ensure the user experience of the product, an oil spraying operation is performed on the rotating nut. When spraying oil on the rotating nut, it is necessary to keep the amount of sprayed oil within a suitable range. Therefore, a strain gauge for weighing is installed on the robotic arm to measure the weight of the rotating nut after oil spraying, and it is put into the automatic assembly line after passing the inspection. However, some rotating nuts usually contain a certain amount of magnetism for easy docking and assembly, and the limited space on the robotic arm will cause the distance between the position of the strain gauge and the rotating nut to be too close, which will cause the magnetism of the rotating nut to affect the detection accuracy of the strain gauge, resulting in inaccurate measurement of the rotating nut, and then affecting the user experience of the product.

[0004] In view of the above problems, some solutions have been proposed in the prior art. For example, by setting fixed weighing points to increase the space to separate the strain gauge from the rotating nut. However, due to the fixed weighing position, and because the rotating nut needs to compare the weights before and after oil spraying to know the amount of sprayed oil, the robotic arm needs to perform multiple pickups on the weighing device. Multiple pickups will not only reduce the production efficiency of the equipment, but also easily cause deviation in the initial clamping position of the rotating nut and the gripper, affecting subsequent production.

[0005] Therefore, an intelligent feeding system for a quick-change lock automatic assembly line is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide an intelligent feeding system for a quick-change lock automatic assembly line, which solves the problem that in the feeding link of the rotating nut, due to the strain gauge being affected by external interference factors, it is difficult to accurately measure the change in the total amount of the rotating nut and the internal oil coating, and thus it is impossible to accurately obtain the qualification rate of the rotating nut after oil spraying. By measuring with a permanent magnet adapted to the individual differences of the rotating nut and verifying the measurement result with the result of the electronic weighing of the strain gauge, the purpose of ensuring the detection accuracy is achieved.

[0007] When performing the feeding operation, in order to monitor the qualification rate of products in the same batch, the manufacturer will attach a QR code to the surface of the rotating nut. When feeding, the robotic arm needs to drive the rotating nut to move to the industrial camera for scanning to determine the product information. However, since the position where the QR code is attached to the rotating nut is not fixed, when photographing the rotating nut, it is necessary to rotate the rotating nut, which will result in an additional process for placing and displaying the rotating nut in the feeding process of the rotating nut.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An intelligent feeding system for a quick-change lock automatic assembly line, installed on the left side of the automatic assembly line body, for the feeding operation of rotating nuts. The intelligent feeding system includes a base and a staggered feeding table, and also includes an oil spray gun, a robotic arm, an electric push rod, a mounting bracket, a detection component, a gripper, a permanent magnet, and a measuring block. The oil spray gun and the robotic arm are both connected to the top of the base. The electric push rod is connected to the right side of the end of the robotic arm. The mounting bracket is connected to the end of the robotic arm, and the lower end of the electric push rod passes through the robotic arm and is connected to the mounting bracket. The detection component is connected to the mounting bracket. The measuring block is connected to the lower end of the detection component. The gripper is connected to the lower side of the measuring block. The measuring block is used to detect the weight change when the gripper 9 is pressed. The permanent magnet is connected to the upper side inside the detection component. When the gripper is pressed, the detection component drives the permanent magnet to move down to form a detection point a. When the gripper is pressurized, the detection component drives the permanent magnet to move down to form a detection point b. The height difference between the detection point b and the detection point a is verified with the detection value of the measuring block.

[0010] Through the above solution, the self-weight of the rotating nut causes the detection component to drive the permanent magnet to move down. At this time, the position where the permanent magnet moves down is adjusted according to the weight of the rotating nut, thereby realizing the adaptation to different rotating nuts and effectively improving the detection accuracy. After oil spraying, the weight of the rotating nut changes at this time, and then the rotating nut moves down again. By measuring the distance difference between the two downward movements of the permanent magnet, the oil content can be calculated. At the same time, the measuring block monitors the weight change of the rotating nut in real time and records the value after the rotating nut stabilizes. During the feeding process of the rotating nut, the two measurement results are verified, thereby achieving the purpose of improving the detection accuracy and effectively ensuring the subsequent production.

[0011] Preferably, an industrial camera is connected to the front end of the robotic arm. The detection component includes a sleeve, a straight cylinder, a spring, a sliding column, a synchronizing member, and a transmission member. The sleeve is connected to the middle of the mounting bracket. The straight cylinder is connected to the top of the sleeve. The spring and the sliding column are sequentially connected in the inner cavity of the sleeve from top to bottom, and the sliding column is connected to the lower end of the spring. The synchronizing member is connected to the outer wall of the straight cylinder. The transmission member is connected to the mounting bracket. The permanent magnet is connected in the inner cavity of the straight cylinder.

[0012] Preferably, the inner cavity of the sleeve is communicated with the inner cavity of the straight cylinder, and the inner diameter value of the sleeve is greater than the inner diameter value of the straight cylinder.

[0013] Through the above solution, after the jaw clamps, the weight change of the jaw drives the sliding column to slide in the sleeve, which changes the hydraulic pressure in the sleeve. The inner cavity of the sleeve is communicated with the inner cavity of the straight cylinder, thereby changing the hydraulic pressure in the straight cylinder, causing the permanent magnet connected to the inner cavity of the straight cylinder to slide, achieving the effect of measuring according to the weight held by the jaw.

[0014] Preferably, the synchronizing member includes an upper sliding frame, a lower sliding frame, a sensor, an electromagnet, a push spring and a positioning frame. The upper sliding frame and the lower sliding frame are both connected to the outer wall of the straight cylinder, and the upper sliding frame passes through the lower sliding frame. The sensor is connected to the left side of the lower sliding frame. The electromagnet, the push spring and the positioning frame are sequentially connected to the left side of the lower sliding frame from right to left. The positioning frame is slidably connected to the upper sliding frame. Thus, the movement of the permanent magnet can drive the movement of the electromagnet, achieving the purpose of adapting to different rotating nuts for measurement.

[0015] Preferably, contacts are connected to both sides of the electromagnet, and power-on blocks are connected to the corresponding positions on the front and rear sides of the positioning frame. When the positioning frame is pressed, the positioning frame drives the contacts to separate from the power-on blocks, and the right end of the positioning frame contacts the straight cylinder. Thus, it is convenient to control the connection state of the electromagnet.

[0016] Preferably, the transmission member includes a motor, a driving gear, a driven gear, a transmission rod, a transmission disc and a rotating rod. The motor is connected to the upper side of the mounting frame, the driving gear is connected to the upper side of the motor, the driven gear is engaged with the front side of the driving gear, the transmission rod is connected to the lower side of the driven gear and penetrates through the mounting frame, the transmission disc is connected to the lower end of the transmission rod, the rotating rod is connected to the upper side of the driven gear, and a flat surface is provided on the right side of the rotating rod. When the flat surface fits with the positioning frame, the positioning frame is not pressed.

[0017] Through the above solution, when the rotating rod rotates, it will exert pressure on the positioning frame, causing the positioning frame to move and contacting the power-on state of the electromagnet, facilitating the measurement operation after the permanent magnet further moves down after the rotating nut is sprayed with oil.

[0018] Preferably, the sliding column includes a sliding rod and a connecting rod. The sliding rod is connected to the lower side of the spring, the connecting rod is connected to the lower side of the sliding rod, the longitudinal section of the connecting rod is stepped, the measuring block is fixed to the lower side of the connecting rod, and a strain gauge is connected inside the measuring block. Thus, the longitudinal section of the connecting rod is stepped, reducing the volume and weight of the connecting rod.

[0019] Preferably, notch openings are symmetrically formed on the left and right sides of the peripheral surface of the driving disk. The shortest distance between the two notch openings on the outer periphery of the driving disk is m, and m is greater than the minor diameter value of the connecting rod.

[0020] Through the above solution, notch openings are symmetrically formed on the left and right sides of the peripheral surface of the driving disk, so that two sections of m are formed on the peripheral surface of the driving disk. Since m is greater than the minor diameter value of the connecting rod, the driving disk can drive the rotating nut to rotate a complete circle, facilitating the industrial camera to record the nut information.

[0021] Preferably, a torsion spring is connected to the lower end surface of the sliding rod, and the other end of the torsion spring is connected to the connecting rod.

[0022] Through the above solution, when the connecting rod rotates, the torsion spring can store energy and release the energy when the driving disk rotates to the notch opening, thereby driving the rotating nut to rotate. On the one hand, the oil liquid is evenly smeared on the inner wall of the rotating nut. On the other hand, the complete peripheral surface of the rotating nut is shown, facilitating the scanning of the rotating nut, achieving the purpose of reducing the process.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. The present invention solves the problem that in the feeding process of the rotating nut, due to the strain gauge being affected by external interference factors, it is difficult to accurately measure the change in the total amount of oil inside the rotating nut, and thus it is impossible to accurately obtain the qualified rate of the rotating nut after oil spraying. By setting a permanent magnet that moves with the robotic arm, when the gripper holds the rotating nut, the permanent magnet will slide in the straight cylinder, thereby recording the weight of the rotating nut, enabling the height of the permanent magnet to adapt to the weight change of the rotating nut. Before and after the rotating nut is oil sprayed, the permanent magnet presents different heights in the straight cylinder. By measuring the height difference before and after the permanent magnet, mechanical measurement of the rotating nut is achieved. At the same time, when the weight of the rotating nut changes, the measuring block records the change difference before and after, forming electronic measurement. The measurement results on both sides are verified, thereby effectively improving the detection accuracy.

[0025] 2. By setting a torsion spring, when the robotic arm swings, the motor drives the connecting rod to rotate through the driving disk. The rotation of the connecting rod will drive the rotating nut to rotate on the one hand, enabling the rotating nut to show a complete peripheral surface in front of the industrial camera, thereby reducing the shooting process of feeding the rotating nut. On the other hand, it will apply force to the torsion spring. When it is placed on the automatic assembly line body, the notch opening of the driving disk faces the connecting rod, and thus the torsion spring releases the force, causing the rotating nut coated with oil liquid to rotate. The oil liquid penetrates into the threads of the rotating nut through centrifugal force, thereby effectively improving the uniformity of the oil liquid on the inner wall of the rotating nut, avoiding oil liquid dripping, and thus ensuring the stability of the detection value.

[0026] 3. When the sliding column moves downward in the sleeve, the negative pressure generated acts on the permanent magnet, causing the permanent magnet to move downward. By making the diameter of the sleeve larger than the inner diameter of the straight cylinder, when the sliding column moves in the sleeve, the permanent magnet can move a greater distance in the straight cylinder, effectively improving the monitoring accuracy and ensuring the fuel injection volume of the rotating nut. At the same time, during fuel injection, the notch of the transmission disc faces the connecting rod, and the torsion spring drives the connecting rod to rotate back to its original position, causing the rotating nut to rotate, and the fuel injection gun sweeps across the entire inner circumferential surface of the rotating nut, effectively improving the fuel injection effect on the rotating nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0028] Figure 2 of the present invention Figure 1 is an enlarged schematic diagram of part A in;

[0029] Figure 3 is a schematic structural diagram of the detection component part of the present invention;

[0030] Figure 4 is a schematic structural diagram of the synchronizing part of the present invention;

[0031] Figure 5 is a schematic structural diagram of the transmission part of the present invention;

[0032] Figure 6 of the present invention Figure 5 is an enlarged schematic diagram of part B in;

[0033] Figure 7 is a schematic diagram of the state of clamping the rotating nut of the present invention;

[0034] Figure 8 is a schematic diagram of the state of the rotating nut after fuel injection of the present invention.

[0035] In the figure: 1. Automatic assembly line body; 2. Base; 3. Staggered loading table; 4. Fuel injection gun; 5. Robot arm; 6. Electric push rod; 7. Mounting frame; 8. Detection component; 801. Sleeve; 802. Straight cylinder; 803. Spring; 804. Sliding column; 8041. Slide bar; 8042. Connecting rod; 8043. Torsion spring; 805. Synchronizing part; 8051. Upper sliding frame; 8052. Lower sliding frame; 8053. Inductor; 8054. Electromagnet; 80541. Contact point; 8055. Push spring; 8056. Positioning frame; 80561. Energizing block; 806. Transmission part; 8061. Motor; 8062. Driving gear; 8063. Driven gear; 8064. Transmission rod; 8065. Transmission disc; 80651. Notch; 8066. Rotating rod; 80661. Flat surface; 9. Claw; 10. Permanent magnet; 11. Industrial camera; 12. Measuring block. Detailed implementation mode

[0036] The following combines the drawings of the embodiments in the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention, making its working state and structural characteristics more detailed. Obviously, the described embodiments are only partial embodiments of the present invention, not complete embodiments. Based on the embodiments of the present invention, other embodiments obtained by those of ordinary skill in the art without creative efforts all fall within the protection scope of the present invention.

[0037] Please refer to Figures 1 to 8 , the present invention provides an intelligent feeding system for a quick-change lock automatic assembly line, and the technical solution is as follows:

[0038] Specifically, please refer to Figures 1 to 8 , an intelligent feeding system for a quick-change lock automatic assembly line, which is installed on the left side of the automatic assembly line body 1 and is used for the feeding operation of rotating nuts. The intelligent feeding system includes a base 2 and a staggered feeding table 3. The staggered feeding table 3 is connected to the left side of the top of the base 2. The rotating nuts are placed on the staggered feeding table 3. It also includes an oil spray gun 4, a robotic arm 5, an electric push rod 6, a mounting bracket 7, a detection component 8, a jaw 9, a permanent magnet 10, and a measuring block 12. The oil spray gun 4 and the robotic arm 5 are both connected to the top of the base 2, and the oil spray gun 4 is located in front of the robotic arm 5. The oil spray gun 4 is within the moving range of the robotic arm 5, and the nozzle of the oil spray gun 4 faces obliquely downward. During the oil spraying process, the height of the nozzle of the oil spray gun 4 cannot exceed the top of the rotating nut. Thus, it can effectively avoid oil contamination of the jaw 9. The electric push rod 6 is connected to the right side of the end of the robotic arm 5. The mounting bracket 7 is connected to the end of the robotic arm 5, and the lower end of the electric push rod 6 passes through the robotic arm 5 and is connected to the mounting bracket 7. The detection component 8 is connected to the mounting bracket 7. The measuring block 12 is connected to the lower end of the detection component 8. The jaw 9 is connected to the lower side of the measuring block 12. The measuring block 12 is used to detect the weight change when the jaw is pressed. A strain gauge is connected inside the measuring block 12. The permanent magnet 10 is connected to the upper side inside the detection component 8. The permanent magnet 10 is far from the strain gauge, and its magnetism will not cause magnetic interference to the normal detection of the strain gauge. When the jaw 9 is pressed, the detection component 8 drives the permanent magnet 10 to move downward to form a detection point a. When the jaw 9 holds the rotating nut, the position of the detection point a is affected by the weight of the nut. When the jaw 9 is pressed, the detection component 8 drives the permanent magnet 10 to move downward to form a detection point b. After the rotating nut is sprayed with oil, the weight of the nut becomes heavier, and thus the permanent magnet 10 moves further downward. The detection point b is recorded. The height of the detection point a is higher than the height of the detection point b. The height difference between the detection point b and the detection point a is verified with the detection value of the measuring block 12.

[0039] By setting the permanent magnet 10, after the jaw 9 holds and stabilizes the rotating nut, the weight of the jaw 9 will change, causing the permanent magnet 10 to move downward. At this time, the detection point a is formed. Since the detection point a is affected by the random change of the self-weight of the rotating nut, it adapts to the individual differences of the rotating nuts, facilitating the detection of the fuel injection amount for different rotating nuts. After fuel injection, the rotating nut becomes heavier, causing the permanent magnet 10 to move further downward, thus forming the detection point b. By measuring the height difference between the detection point a and the detection point b, the weight of the rotating nut after fuel injection can be effectively measured. And this process is carried out on the robotic arm 5, effectively reducing the feeding process of the rotating nut and effectively improving the production efficiency. By setting the measuring block 12, when the jaw 9 grabs the rotating nut, the weight change of the rotating nut can be detected in real time, and the stable values before and after fuel injection of the rotating nut can be obtained. By comparing and verifying the difference measured by the measuring block 12 with the height difference between the detection point a and the detection point b, the accuracy of detecting the magnetic rotating nut is effectively improved.

[0040] As an implementation manner of the present invention, referring to Figure 2 , Figure 3 , Figure 7 and Figure 8 , an industrial camera 11 is connected to the front end of the robotic arm 5, and the shooting end of the industrial camera 11 faces the rotating nut on the jaw 9. The detection component 8 includes a sleeve 801, a straight cylinder 802, a spring 803, a sliding column 804, a synchronizing member 805 and a transmission member 806. The sleeve 801 is fixedly connected to the middle of the mounting bracket 7, the straight cylinder 802 is fixedly connected to the top of the sleeve 801, the spring 803 and the sliding column 804 are connected in the inner cavity of the sleeve 801 from top to bottom in sequence. The top of the spring 803 is connected to the top of the inner cavity of the sleeve 801, and the sliding column 804 is connected to the lower end of the spring 803. The sliding column 804 is slidably connected in the inner cavity of the sleeve 801. The synchronizing member 805 is connected to the outer wall of the straight cylinder 802, the transmission member 806 is connected to the mounting bracket 7, the permanent magnet 10 is slidably connected in the inner cavity of the straight cylinder 802. A vent hole is opened at the top of the straight cylinder 802, and the inner cavity of the sleeve 801 is communicated with the inner cavity of the straight cylinder 802. When the sliding column 804 slides downward in the inner cavity of the sleeve 801, a negative pressure can be formed in the inner cavity of the sleeve 801, and the negative pressure is transmitted to the straight cylinder 802, causing the permanent magnet 10 in the straight cylinder 802 to slide downward. At this time, the vent hole can relieve the pressure on the upper side of the permanent magnet 10. And the inner diameter value of the sleeve 801 is larger than the inner diameter value of the straight cylinder 802. The inner diameter of the straight cylinder 802 is thinner. Under the action of oil pressure, the change in the height of the oil in the sleeve 801 will be amplified by the straight cylinder 802, and then the downward movement distance of the sliding column 804, so that the downward movement distance of the permanent magnet 10 can be several times that of the sliding column 804, effectively improving the measurement accuracy.

[0041] By setting the detection component 8, after the rotating nut is clamped, the weight of the jaw 9 will change, which will drive the sliding column 804 to move downward. The downward movement of the sliding column 804 will expand the volume of the chamber at the top of the sleeve 801, causing a hydraulic change in the chamber at the top of the sleeve 801. The inner cavity of the sleeve 801 is connected to the inner cavity of the straight cylinder 802. Thus, the negative pressure will act on the permanent magnet 10 through the inner cavity of the straight cylinder 802, causing the permanent magnet 10 to move downward. The downward movement distance of the permanent magnet 10 changes adaptively according to the weight of the rotating nut, effectively adapting to rotating nuts of different weights. After oil injection, the weight of the rotating nut further increases, and thus the permanent magnet 10 moves further downward. By comparing the height difference of the permanent magnet 10 before and after, the weight of the rotating nut after oil injection can be calculated. At the same time, the inner diameter value of the sleeve 801 is made larger than the inner diameter value of the straight cylinder 802, thus achieving the purpose of amplifying the weight change of the rotating nut.

[0042] As an implementation manner of the present invention, referring to Figure 4 , Figure 5 , Figure 7 and Figure 8 , the synchronizing member 805 includes an upper sliding frame 8051, a lower sliding frame 8052, a sensor 8053, an electromagnet 8054, a push spring 8055 and a positioning frame 8056. Both the upper sliding frame 8051 and the lower sliding frame 8052 are slidably connected to the outer wall of the straight cylinder 802, and the upper sliding frame 8051 passes through the lower sliding frame 8052. The distance between the upper sliding frame 8051 and the lower sliding frame 8052 can be adjusted by itself. The sensor 8053 is connected to the left side of the lower sliding frame 8052. The electromagnet 8054, the push spring 8055 and the positioning frame 8056 are connected to the left side of the lower sliding frame 8052 in sequence from right to left. Both ends of the push spring 8055 are in contact with the electromagnet 8054 and the positioning frame 8056 respectively. The position of the electromagnet 8054 is fixed. The positioning frame 8056 is slidably connected to the upper sliding frame 8051. Two sides of the electromagnet 8054 are connected with contact points 80541. At the corresponding positions on the front and back sides of the positioning frame 8056, power-on blocks 80561 are connected. When the positioning frame 8056 is not pressed, the contact points 80541 are in contact with the power-on blocks 80561. When the contact points 80541 are in contact with the power-on blocks 80561, the electromagnet 8054 generates a magnetic force to magnetically adsorb the permanent magnet 10. At this time, the up and down sliding of the permanent magnet 10 can drive the electromagnet 8054 to slide up and down.

[0043] By setting the synchronizer 805, the electromagnet 8054 is energized and magnetically connected to the permanent magnet 10 in the initial state. Furthermore, the movement of the permanent magnet 10 can drive the movement of the electromagnet 8054. By moving the positioning frame 8056, the contact 80541 can be separated from the energized block 80561, entering a state where the energization of the electromagnet 8054 and the magnetic connection with the permanent magnet 10 are released, enabling the permanent magnet 10 to slide freely. If the permanent magnet 10 moves downward without passing through the inductor 8053 or the weight of the nut decreases due to oil dripping after the downward movement and the permanent magnet 10 moves upward again to the lower side of the inductor 8053, it indicates that the fuel injection volume of the rotating nut does not meet the standard, and it will be discarded into the waste box.

[0044] As an implementation manner of the present invention, referring to Figure 5 、 Figure 6 、 Figure 7 and Figure 8, the transmission member 806 includes a motor 8061, a driving gear 8062, a driven gear 8063, a transmission rod 8064, a transmission disc 8065 and a rotating rod 8066. The motor 8061 is connected to the upper side of the mounting bracket 7, and the driving gear 8062 is connected to the upper side of the motor 8061. The upper side of the motor 8061 is the power output end. The driven gear 8063 meshes with the front side of the driving gear 8062. The transmission rod 8064 is connected to the lower side of the driven gear 8063 and penetrates through the mounting bracket 7. The transmission rod 8064 is rotatably connected to the mounting bracket 7. The transmission disc 8065 is fixedly connected to the lower end of the transmission rod 8064. The rotating rod 8066 is connected to the upper side of the driven gear 8063. A flat surface 80661 is provided on the right side of the rotating rod 8066. The rotating rod 8066 passes through the upper sliding carriage 8051. When the flat surface 80661 is in contact with the positioning bracket 8056, the positioning bracket 8056 is not pressed. When the rotating rod 8066 rotates, the flat surface 80661 separates from the positioning bracket 8056, and then the positioning bracket 8056 is pressed and moves to the right. The sliding column 804 includes a sliding rod 8041 and a connecting rod 8042. The sliding rod 8041 is connected to the lower side of the spring 803. The sliding rod 8041 is slidably connected to the sleeve 801. The connecting rod 8042 is connected to the lower side of the sliding rod 8041. The longitudinal section of the connecting rod 8042 is stepped. The stepped design effectively reduces the weight of the connecting rod 8042. Notches 80651 are formed on the left and right sides of the circumferential surface of the transmission disc 8065. When the transmission disc 8065 rotates, the side wall of the transmission disc 8065 contacts the connecting rod 8042, thereby driving the connecting rod 8042 to rotate. The shortest distance between the two notches 80651 on the outer circumference of the transmission disc 8065 is m, and m is greater than the small diameter value of the connecting rod 8042. Thus, the connecting rod 8042 can be driven to rotate a complete circle, effectively presenting the rotating nut in front of the industrial camera 11, facilitating the industrial camera 11 to scan the rotating nut, effectively reducing the scanning process, and improving the production efficiency. The two notches 80651 divide the surface of the transmission disc 8065 evenly, so that two ms are formed on the surface of the transmission disc 8065. A torsion spring 8043 is connected to the lower end surface of the sliding rod 8041, and the other end of the torsion spring 8043 is connected to the connecting rod 8042. When the sliding rod 8041 rotates, an upward force is applied to the torsion spring 8043. The measuring block 12 is fixed to the lower side of the connecting rod 8042.

[0045] By setting the transmission member 806, during the swinging process of the swing arm of the robotic arm 5, the motor 8061 will be started. The motor 8061 drives the transmission rod 8064 and the rotating rod 8066 to rotate through the driving gear 8062 and the driven gear 8063. When the transmission rod 8064 rotates, it drives the transmission disk 8065 to rotate, so that the transmission disk 8065 contacts the connecting rod 8042 and drives the connecting rod 8042 to rotate. The rotation of the connecting rod 8042 forces the torsion spring 8043. When the swing arm moves to the spray gun 4, the transmission disk 8065 rotates to the notch 80651. At this time, the connecting rod 8042 loses its limit, and then the torsion spring 8043 will drive the connecting rod 8042 to rotate, which in turn causes the rotating nut to rotate, so that the oil can be sprayed on the entire inner wall of the rotating nut. During the process of the robotic arm 5 moving from the spray gun 4 to the automatic assembly line body 1, the motor 8061 will continue to drive the transmission disk 8065 to rotate, so that the torsion spring 8043 is forced. When the robotic arm 5 moves onto the automatic assembly line body 1, the force on the rotating nut is released, and the rotating nut rotates. The oil in it generates centrifugal force and penetrates into the threads of the rotating nut. After the feeding is completed, the rotating rod 8066 rotates a complete circle. At this time, the flat surface 80661 faces the positioning frame 8056, and the push spring 8055 pushes the positioning frame 8056 to reset. The energized block 80561 contacts the contact 80541, and the electromagnet 8054 is energized. Then the permanent magnet 10 moves upward and drives the synchronizing member 805 to move upward through the electromagnet 8054.

[0046] In the present invention, first, the strain gauge inside the measuring block 12 is used to detect the spraying weight of the rotating nut in electronic form. Then, by using the weight of the rotating nut, the permanent magnet 10 is driven to move downward, and the detection component 8 records the position of the permanent magnet 10 at this time. After the permanent magnet 10 is sprayed with oil, the moving distance of the permanent magnet 10 again is determined, and then the spraying weight of the permanent magnet 10 is determined again in a mechanical form. The specific scheme is as follows:

[0047] During feeding, the robotic arm 5 drives the jaw 9 to move to the upper side of the staggered feeding table 3. The electric push rod 6 drives the jaw 9 to move downward through the mounting bracket 7. The jaw 9 clamps the rotating nut. The electric push rod 6 drives the mounting bracket 7 to reset. At this time, the robotic arm 5 is briefly stationary. At this time, the measuring block 12 measures the weight of the rotating nut once. At the same time, the weight of the rotating nut acts on the jaw 9, which in turn causes the sliding column 804 to move downward. The sealed chamber formed between the sliding column 804 and the straight cylinder 802 will form a negative pressure after the sliding column 804 moves downward, causing the permanent magnet 10 to move downward. When the permanent magnet 10 moves downward, it drives the upper sliding frame 8051 to move downward through the electromagnet 8054. After the permanent magnet 10 is stable, at this time, the upper sliding frame 8051 forms the detection point a. The upper sliding frame 8051 records the weight of the rotating nut for the second time. When the upper sliding frame 8051 moves downward, it drives the lower sliding frame 8052 to move downward. A constant distance is maintained between the upper sliding frame 8051 and the lower sliding frame 8052. Therefore, a constant distance is maintained between the measurement point a and the measurement point b;

[0048] The robotic arm 5 drives the rotating nut to move towards the oil spray gun 4. During the movement, the motor 8061 drives the drive disk 8065 to rotate through the driving gear 8062, the driven gear 8063 and the transmission rod 8064. The friction between the rotation of the drive disk 8065 and the connecting rod 8042 causes the connecting rod 8042 to rotate. At this time, the torsion spring 8043 applies force. When the connecting rod 8042 rotates, it will drive the rotating nut to rotate through the clamping jaw 9 to display the entire circumferential surface of the rotating nut, facilitating the industrial camera 11 to scan the information of the rotating nut, achieving the purpose of reducing the process of scanning the rotating nut. At the same time, the rotation of the driven gear 8063 drives the transmission rod 8064 to rotate and squeeze the positioning frame 8056, causing the positioning frame 8056 to move to the right and contact the straight cylinder 802, thereby locking the position of the upper sliding frame 8051 and determining the detection point a. When the positioning frame 8056 moves, the energized block 80561 is separated from the contact point 80541, causing the electromagnet 8054 to be disconnected, and the magnetic connection between the electromagnet 8054 and the permanent magnet 10 is disconnected;

[0049] During oil spraying, the robotic arm 5 drives the clamping jaw 9 to move to the oil spraying position. The oil spray gun 4 moves up into the inner cavity of the rotating nut, and the oil spray gun 4 starts to spray oil. At this time, the side of the drive disk 8065 facing the connecting rod 8042 rotates to the notch 80651, and then the connecting rod 8042 loses its limitation. The torsion spring 8043 drives the connecting rod 8042 to rotate and reset, thereby driving the rotating nut to rotate, enabling the oil spray gun 4 to sweep across the complete inner circumferential surface of the rotating nut, effectively improving the oil spraying effect on the rotating nut;

[0050] After oil spraying, the oil spray gun 4 moves down and the robotic arm 5 pauses briefly. At this time, the weight of the rotating nut changes. The measuring block 12 records the weight of the rotating nut after oil spraying for the first time. The sliding column 804 moves further down under the influence of gravity, causing the permanent magnet 10 to move down. Since the distance between the upper sliding frame 8051 and the lower sliding frame 8052 is set at a specified value, when the permanent magnet 10 moves down and stabilizes, it records the weight of the rotating nut after oil spraying for the second time. When the permanent magnet 10 is located below the inductor 8053, it indicates that the amount of oil sprayed on the rotating nut meets the standard; when both measurement results meet the standard, the robotic arm 5 sends the rotating nut into the automatic assembly line body 1.

[0051] Although the embodiments of the present invention have been described, for those of ordinary skill in the art, changes and modifications can be made to the embodiments based on an understanding of the principles and spirit of the present invention to obtain other effects. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent feeding system for a quick-change lock automatic assembly line, installed on the left side of the automatic assembly line body (1), the intelligent feeding system comprising a base (2) and a staggered feeding table (3), characterized in that: It also includes an oil spray gun (4), a robotic arm (5), an electric push rod (6), a mounting bracket (7), a detection component (8), a clamping jaw (9), a permanent magnet (10) and a measuring block (12). The oil spray gun (4) and the robotic arm (5) are both connected to the top of the base (2). The electric push rod (6) is connected to the right side of the end of the robotic arm (5). The mounting bracket (7) is connected to the end of the robotic arm (5), and the lower end of the electric push rod (6) passes through the robotic arm (5) and is connected to the mounting bracket (7). The detection component (8) is connected to the mounting bracket (7). The measuring block (12) is connected to the lower end of the detection component (8). The clamping jaw (9) is connected to the lower side of the measuring block (12). The change in the weight of the clamping jaw (9) changes the electronic measurement result of the measuring block (12). The permanent magnet (10) is connected to the upper side inside the detection component (8). When the clamping jaw (9) is pressed, the detection component (8) drives the permanent magnet (10) to move downward to form a detection point a. When the clamping jaw (9) is pressurized, the detection component (8) drives the permanent magnet (10) to move downward to form a detection point b. The result brought by the height difference between the detection point b and the detection point a is compared with the electronic measurement result of the measuring block (12) to obtain the qualified rate.

2. The intelligent feeding system of a quick-change lock automatic assembly line according to claim 1, characterized in that: An industrial camera (11) is connected to the front end of the robotic arm (5). The detection component (8) includes a sleeve (801), a straight cylinder (802), a spring (803), a sliding column (804), a synchronizing member (805) and a transmission member (806). The sleeve (801) is connected to the middle of the mounting bracket (7). The straight cylinder (802) is connected to the top of the sleeve (801). The spring (803) and the sliding column (804) are connected in the inner cavity of the sleeve (801) from top to bottom in sequence, and the sliding column (804) is connected to the lower end of the spring (803). The synchronizing member (805) is connected to the outer wall of the straight cylinder (802). The transmission member (806) is connected to the mounting bracket (7). The permanent magnet (10) is connected in the inner cavity of the straight cylinder (802).

3. The intelligent feeding system of a quick-change lock automatic assembly line according to claim 2, characterized in that: The inner cavity of the sleeve (801) is connected to the inner cavity of the straight cylinder (802), and the inner diameter value of the sleeve (801) is greater than the inner diameter value of the straight cylinder (802).

4. The intelligent feeding system of a quick-change lock automatic assembly line according to claim 2, characterized in that: The synchronizing member (805) includes an upper sliding frame (8051), a lower sliding frame (8052), an inductor (8053), an electromagnet (8054), a push spring (8055) and a positioning frame (8056). The upper sliding frame (8051) and the lower sliding frame (8052) are both connected to the outer wall of the straight cylinder (802), and the upper sliding frame (8051) passes through the lower sliding frame (8052). The inductor (8053) is connected to the left side of the lower sliding frame (8052). The electromagnet (8054), the push spring (8055) and the positioning frame (8056) are connected to the left side of the lower sliding frame (8052) from right to left in sequence. The positioning frame (8056) is slidably connected to the upper sliding frame (8051).

5. The intelligent feeding system of a quick-change lock automatic assembly line according to claim 4, characterized in that: Both sides of the electromagnet (8054) are connected with contacts (80541). At the corresponding positions of the front and rear sides of the positioning frame (8056) and the contacts (80541), there are energized blocks (80561). When the positioning frame (8056) is pressed, the positioning frame (8056) drives the contacts (80541) to separate from the energized blocks (80561), and the right end of the positioning frame (8056) is in contact with the straight cylinder (802).

6. The intelligent feeding system of a quick-change lock automatic assembly line according to claim 5, characterized in that: The transmission member (806) includes a motor (8061), a driving gear (8062), a driven gear (8063), a transmission rod (8064), a transmission disc (8065) and a rotating rod (8066). The motor (8061) is connected to the upper side of the mounting frame (7). The driving gear (8062) is connected to the upper side of the motor (8061). The driven gear (8063) is engaged with the front side of the driving gear (8062). The transmission rod (8064) is connected to the lower side of the driven gear (8063) and penetrates through the mounting frame (7). The transmission disc (8065) is connected to the lower end of the transmission rod (8064). The rotating rod (8066) is connected to the upper side of the driven gear (8063). A flat surface (80661) is provided on the right side of the rotating rod (8066). When the flat surface (80661) is in contact with the positioning frame (8056), the positioning frame (8056) is not pressed.

7. The intelligent feeding system of a quick-change lock automatic assembly line according to claim 5, characterized in that: The sliding column (804) includes a sliding rod (8041) and a connecting rod (8042). The sliding rod (8041) is connected to the lower side of the spring (803). The connecting rod (8042) is connected to the lower side of the sliding rod (8041). The longitudinal section of the connecting rod (8042) is stepped. The measuring block (12) is installed on the lower side of the connecting rod (8042). A strain gauge is connected inside the measuring block (12).

8. The intelligent feeding system of a quick-change lock automatic assembly line according to claim 6, characterized in that: Notches (80651) are symmetrically formed on the left and right sides of the circumferential surface of the transmission disc (8065). The shortest distance between the two notches (80651) on the outer circumference of the transmission disc (8065) is m, and this distance is greater than the small diameter value of the connecting rod (8042).

9. The intelligent feeding system of a quick-change lock automatic assembly line according to claim 7, characterized in that: A torsion spring (8043) is connected to the lower end surface of the sliding rod (8041), and the other end of the torsion spring (8043) is connected to the connecting rod (8042).

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