Automatic assembly tool for automobile parts buckles

Abstract

The present invention relates to the technical field of automobile parts assembly, and discloses an automatic assembly tool for automobile parts buckles, including a buckle picking and placing robot and a buckle assembly station, the buckle assembly station including a buckle feeding mechanism and a guard plate positioning and placement mechanism, and a plurality of buckle assembly stations are evenly spaced around the circumference of the buckle picking and placing robot; the buckle picking and placing robot includes a supporting core column and a plurality of buckle picking and placing modules, the buckle picking and placing modules include a support arm and a buckle picking member that slides on the support arm along the length direction of the support arm and can reciprocate vertically and horizontally perpendicular to the support arm, all the buckle picking members are synchronously reciprocated along the length direction of the support arm through a guide sliding member and are controlled by a counterweight drive component, the buckle picking and placing robot can simultaneously realize the synchronous picking and assembly of multiple buckles, thereby significantly improving the efficiency of assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts assembly, in particular to an automatic assembly tool for automobile parts buckles. Background Art

[0002] Plastic automotive panels require clips to be installed, with multiple clips distributed across different areas of the panel. Currently, most assembly processes utilize semi-automatic tooling, but many steps still require manual intervention. To improve assembly efficiency, further automation is essential.

[0003] The Chinese patent with announcement number CN116748833B discloses a left and right side guard plate buckle installation device, including a second loading station for preparing materials; a buckle installation station for carrying the installation guard plate and cooperating with the assembly of the buckle; a second buckle installation robot for removing the buckle on the second loading station and installing it on one side of the guard plate on the buckle installation station; a first loading station and a first buckle installation robot, the first buckle installation robot is used to remove the buckle of the upper cover of the first loading station and install it on the other side of the guard plate on the buckle installation station; the first loading station and the second loading station have the same structure, both of which are composed of a loading platform, a buckle distribution table and a vibration processing mechanism, a buckle conveying track is provided between the vibration processing mechanism and the buckle distribution table, the first buckle installation robot and the second buckle installation robot are both six-axis robots, and a picking fixture is installed at the front end of the robot's mechanical arm. A number of picking rods are movably assembled at both ends of the picking fixture, and parallel clamps are provided at the ends of the picking rods.

[0004] The above assembly utilizes the flexible joints of a six-axis robot to clamp the clips and assemble them at the preset position of the guard plate according to logic programming. Each joint of the six-axis robot requires a drive mechanism for control, so the cost is high. In addition, a six-axis robot can only pick up and assemble a single clip of a single guard plate at a time. Although the degree of automation has been improved, there is still room for improvement in efficiency. Summary of the Invention

[0005] The present invention addresses the shortcomings of needing to use a six-axis robot to pick up and assemble buckles and only being able to complete the assembly of a single buckle on a guard plate at a time, and the efficiency still needs to be improved. It provides an automatic assembly tool for automobile parts buckles that can realize the simultaneous assembly of multiple guard plate buckles at a time, and the assembly efficiency per unit time is significantly improved.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] An automatic assembly tool for automobile parts buckles, comprising a buckle pick-and-place robot and buckle assembly stations, wherein the buckle assembly stations include a buckle feeding mechanism and a guard plate positioning and placement mechanism, and a plurality of buckle assembly stations are evenly spaced around the circumference of the buckle pick-and-place robot;

[0008] The buckle picking and placing robot includes a vertically arranged support core column and a plurality of buckle picking and placing modules circumferentially spaced and distributed on the outer ring wall of the support core column, corresponding to the product assembly stations. The buckle picking and placing module includes a support arm fixed to the support core column at one end and extending horizontally outward at the other end, and a buckle picking member that slides along the length of the support arm and can reciprocate vertically and horizontally perpendicular to the support arm. All the buckle picking members are synchronously reciprocated along the length of the support arm through a guide sliding member and are controlled by a counterweight drive assembly.

[0009] The counterweight drive assembly includes a main screw slide assembly vertically arranged in the supporting core column, a first pull rope connected between the guide sliding member and the main slide of the main screw slide assembly, and a second pull rope connected to the other end of the guide sliding member. The end of the second pull rope away from the guide sliding member is connected to a counterweight block that tends to fall.

[0010] The above scheme is adopted to replace the six-axis robot with a buckle picking and placing robot. The buckle picking and placing robot can realize the synchronous picking and assembly of multiple buckles at the same time, and the buckle assembly stations are arranged in several groups around the circumference of the buckle picking and placing robot. The number of groups is consistent with the number of support arms of the buckle picking and placing robot. Each support arm of the buckle picking and placing robot is provided with a buckle picking piece along its length direction, and the buckle picking piece itself can also move vertically and horizontally along the length direction of the vertical support arm, so that the buckle picking piece can move in the XYZ axis direction, and all the picking pieces can be driven synchronously at the same time along the support arm. The same stroke of movement in the length direction of the arm is achieved by using a counterweight drive assembly. The advantage of setting up the counterweight drive assembly is that all the clip picking parts can be moved synchronously by using a set of main screw slide assemblies, reducing the number of settings of conventional screw slide assemblies and making the structure more compact. The main screw slide assembly uses the lifting and lowering of its slide combined with the lifting and lowering of the counterweight block to control the moving distance of the clip picking part. The weight of the counterweight block can make the displacement of the slide lifting product accurately act on the clip picking part. Selecting a pull rope with good anti-deformation performance can ensure the movement accuracy of the clip picking part and meet the assembly accuracy of the clip on the guard plate.

[0011] Preferably, the counterweight block is vertically guided and slid on the outer wall of the supporting core column, the end of the second pull rope away from the counterweight block is connected to the end of the guide sliding member away from the supporting core column, and several second fixed pulleys for realizing the reversal of the second pull rope are provided on the end of the support arm away from the supporting core column and the outer wall of the support arm.

[0012] Using the above solution, if the counterweight is set at the end of the support arm away from the support core column, it may touch the parts on other workstations and cause interference after falling. If it is set on the support core column, the support core column can guide it to avoid shaking during the falling process and causing collision or interference.

[0013] Preferably, two second pull ropes are provided and are respectively extended from one end of the support arm away from the support core column along the outer walls of both sides of the support arm to be fixedly connected to the fixed protrusions on both sides of the counterweight block.

[0014] With the above solution, both ends of the counterweight are connected to a second pull rope respectively. This arrangement can improve the stability and smoothness of the lifting and lowering of the counterweight.

[0015] Preferably, when the counterweight block rises to its maximum stroke, the snap-on pickup member is closest to the supporting core column. At this time, a limiting structure is provided between the counterweight block and the supporting core column to relieve the tension of the first pull rope and the second pull rope.

[0016] Preferably, the limiting structure includes a limiting groove recessed on the side of the counterweight block close to the supporting core column, a limiting block elastically and retractably arranged on the outer wall of the supporting core column and capable of being plugged into and matched with the aligned limiting groove under normal circumstances, and an electromagnet that drives the limiting block to retract when energized.

[0017] By adopting the above-mentioned scheme, the setting of the limiting structure can reduce the pulling force of the counterweight block on the first pull rope and the second pull rope, which can significantly reduce the external force applied to the first pull rope and the second pull rope when the equipment is idle, delay the deformation of the first pull rope and the second pull rope, and increase the service life of the first pull rope and the second pull rope.

[0018] Preferably, the guide sliding member is a guide sliding vehicle, and a guide groove is passed through the support arm along its length direction. The guide sliding vehicle includes an "I"-shaped vehicle body, and the upper and lower parallel movable plates of the vehicle body are respectively provided with rollers that roll and fit with the upper and lower ends of the support arm, and the movable plates are connected into one by guide blocks that are plugged into the guide grooves.

[0019] With the above solution, the guide sliding member adopts a structure of a vehicle body combined with rollers, which can reduce the friction force when the guide sliding member moves, making it easier to drive the guide sliding member to move.

[0020] Preferably, the buckle assembly station includes two guard plate positioning and placement mechanisms that are horizontally spaced and parallel to the support arm, and two buckle feeding mechanisms. The buckle feeding mechanism includes a vibrating loading tray, a buckle conveyor and a buckle lifting part. The buckle conveyor transfers the buckles provided by the vibrating loading tray to the buckle lifting part, and the buckle lifting part delivers the buckles to the buckle picking part. The buckle picking part includes two adsorption-type clamps that are vertically lifted and lowered by Z-axis screw slide assemblies, and forward and reverse screw slide assemblies that enable the housings of the two Z-axis screw slide assemblies to move synchronously closer or farther away from each other in a horizontal direction perpendicular to the support arm.

[0021] By adopting the above scheme, each buckle assembly station is provided with two sets of buckle feeding mechanisms and guard plate positioning and placement mechanisms. In the buckle picking part, the two adsorption-type clamps are each lifted and lowered synchronously with the help of a Z-axis screw slide assembly, and are synchronously moved closer or farther away horizontally with the help of a set of forward and reverse screw slide assemblies, thereby enabling the buckle assembly of the two guard plates at the same time, further increasing the assembly efficiency.

[0022] Preferably, the buckle lifting member includes a material receiving seat located at the discharge end of the buckle conveyor member, and a material receiving trough is provided on the material receiving seat, the opening of the material receiving trough faces the buckle conveyor member and the adsorption type clamp, and the material receiving seat vertically rises and enters the material receiving trough when rising and pushes the buckle to a lifting member that is in contact with the adsorption surface of the adsorption type clamp, and the lifting of the lifting member is controlled by the top pressure driving member.

[0023] Preferably, the adsorption type clamp includes an adsorption member having a covering groove at the lower end for the clip to enter with an opening downward, the upper end of the adsorption member is guided to slide on the slide of the Z-axis screw slide assembly and tends to descend to the maximum stroke through the buffer elastic member, and an air duct is provided inside the adsorption member, one end of the air duct is located at the bottom of the covering groove and forms an adsorption port, and the other end of the air duct is located on the side wall of the adsorption member and is connected to the vacuum assembly.

[0024] By adopting the above scheme, the buckle enters the covering groove with the opening downward and is adsorbed by the adsorption part, and is finally delivered to the position where the buckle needs to be assembled on the guard plate with the opening downward, and the assembly of the buckle is achieved with the help of the descent of the adsorption part.

[0025] Preferably, a positioning mark is provided between the housing end wall of the forward and reverse screw slide assembly and the side wall of the support arm for detecting whether the first pull rope is deformed when the snap pick-up piece moves toward the support core column to the maximum stroke, and a detection mark is provided on the support core column for aligning with the bottom surface of the counterweight block when the snap pick-up piece moves toward the support core column to the maximum stroke and for detecting whether the second pull rope is deformed.

[0026] When adopting the above scheme, the first pull rope and the second pull rope are stretched and deformed, which will cause position deviation when the buckle picking part is assembled with the buckle. Therefore, it is very necessary to have a detection structure for detecting the deformation of the first pull rope and the second pull rope. The operator can correct the deviation according to the detection results or replace the first pull rope or the second pull rope in time to ensure the normal operation of the equipment.

[0027] Preferably, the guard plate positioning and placement mechanism includes a placement seat with a product positioning groove and a rotatable and liftable pressure piece. Before discharging the material, the pressure piece rotates to the outside of the product positioning groove and is in an upward avoidance state; after discharging the material, the pressure piece rotates to the inside of the product positioning groove and is in a state of pressing down the product.

[0028] The present invention has significant technical effects due to the adoption of the above technical solutions:

[0029] 1. Replace the six-axis robot with a snap-on pick-and-place robot. This snap-on pick-and-place robot can simultaneously pick up and assemble multiple snaps. The movement of multiple snap-on pick-up parts along the length of the support arm is controlled by a set of main screw slide assemblies and a counterweight block and a pull rope assembly that matches the number of snap-on pick-up parts. This can significantly reduce the number of conventional screw slide assemblies and has a more compact structure. The screw transmission in the main screw slide assembly is used to control the transmission accuracy, and the deadweight of the counterweight block can ensure that the slide movement caused by the screw transmission can accurately act on the snap-on pick-up parts.

[0030] 2. Improvements to the counterweight assembly method and position can significantly avoid interference during the lifting and lowering of the counterweight;

[0031] 3. The buckle pick-up piece on each support arm can pick up and assemble two buckles at the same time, further increasing the assembly efficiency of the buckles on the guard plate per unit time;

[0032] 4. A positioning mark and a detection mark are provided for detecting whether the first and second draw cords are deformed, so that the operator can correct the position deviation caused by the deformation of the first or second draw cord or replace or adjust the length of the first or second draw cord in a timely manner;

[0033] 5. A limiting structure for limiting the counterweight block is added to further delay the time it takes for the first and second pull ropes to deform, thereby extending their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is an axonometric view of an automatic assembly tool for automobile parts buckles according to this embodiment;

[0035] Figure 2 This is a front view of the snap-on pick-and-place robot of this embodiment;

[0036] Figure 3yes Figure 2 AA cross-sectional view;

[0037] Figure 4 yes Figure 3 Cross-sectional view of BB;

[0038] Figure 5 yes Figure 4 A magnified view of A;

[0039] Figure 6 yes Figure 4 Cross-sectional view of CC;

[0040] Figure 7 yes Figure 6 An enlarged view of B;

[0041] Figure 8 yes Figure 4 Cross-sectional view of DD;

[0042] Figure 9 is an axonometric view of a group of snap-fit ​​assembly stations corresponding to each support arm of this embodiment;

[0043] Figure 10 This is an axonometric view of the adsorption-type clamp of this embodiment when it is matched with the snap-on lifting member.

[0044] The parts designated by the numbers in the above drawings are as follows: 1. Machine base; 2. Support core column; 201. First guide rail; 3. Support arm; 301. Guide groove; 4. Vibrating loading tray; 5. Buckle transmission part; 6. Forward and reverse screw rod slide assembly; 601. Forward and reverse screw rod; 602. Forward and reverse slide; 603. Second drive motor; 7. Z-axis screw rod slide assembly; 8. Adsorption part; 801. Coating groove; 802. Adsorption port; 9. Placement seat; 10. Pressing part; 11. Second guide rail; 12. Second slider; 13. Buffer elastic part; 14. Fixed block; 15. Material receiving seat; 1501. Material receiving trough; 16. Material ejector; 17. Pressing drive member; 18. Main drive motor; 19. Main screw rod; 20. First pull rope; 21. Second pull rope; 22. First fixed pulley; 23. Second fixed pulley; 24. Guide sliding vehicle; 241. Moving plate; 242. Guide block; 243. Roller; 25. Main slide; 26. Counterweight; 261. Limiting groove; 27. Fixed boss; 28. Alignment mark; 29. ​​Detection mark; 30. Electromagnet; 31. Pressure spring; 32. Limiting block. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0046] A tool for automatic assembly of automotive parts buckles includes a machine base 1 and a buckle picking and placing robot and a buckle assembly station arranged on the machine base 1. The buckle picking and placing robot includes a support core column 2 vertically fixed to the upper end surface of the machine base 1 and three groups of buckle picking and placing modules evenly spaced circumferentially on the outer ring wall at the upper end of the support core column 2. There are three groups of buckle assembly stations and they are arranged in a one-to-one correspondence with the buckle picking and placing modules.

[0047] The snap-on pick-and-place module includes a support arm 3 fixed to the support core column 2 at one end and extending horizontally outward at the other end, and a snap-on pick-up component that slides on the support arm 3 along the length direction of the support arm 3 and can reciprocate vertically and horizontally perpendicular to the support arm 3. The snap-on pick-up component includes a forward and reverse screw slide assembly 6 extending in a horizontal direction perpendicular to the length direction of the support arm 3, a Z-axis screw slide assembly 7 respectively arranged on the forward and reverse slides 602 of the forward and reverse screw slide assembly 6, and an adsorption-type clamp fixed on the slide of each Z-axis screw slide assembly 7, and a housing for the three sets of forward and reverse screw slide assemblies 6. Each is guided to slide back and forth along the length direction of a support arm 3 through a guide slide and is synchronously controlled by a counterweight drive assembly. The counterweight drive assembly includes a main screw slide assembly vertically arranged in the support core column 2, a first pull rope 20 connected between the guide slide and the main screw slide assembly, and a second pull rope 21 connected to the other end of the guide slide. The second pull rope 21 is connected to a counterweight block 26 with a downward tendency at one end away from the guide slide. The first pull rope 20 and the second pull rope 21 are Kevlar pull ropes made of aramid fiber, and the counterweight block 26 is made of austenitic stainless steel. This embodiment uses 304 stainless steel.

[0048] The Z-axis screw slide assembly 7 includes a vertically arranged housing, a screw that rotates vertically in the housing, and a slide that slides in the housing and rises and falls vertically as the screw rotates. A first drive motor that drives the screw to rotate is fixed to the upper end of the housing.

[0049] The forward and reverse screw slide assembly 6 includes a casing arranged in a horizontal direction perpendicular to the support arm 3, a forward and reverse screw 601 rotating in the casing and having two thread segments with opposite thread directions, and a forward and reverse slide 602 guided and slidable in the casing and respectively located on the forward and reverse screw 601 and relatively approaching or moving away as the forward and reverse screw 601 rotates. A second drive motor 603 for driving the forward and reverse screw 601 to rotate is fixed at one end of the outer wall of the casing.

[0050] The main screw slide assembly includes a main screw 19 that rotates vertically in the supporting core column 2, a main slide 25 that is vertically guided and slides in the supporting core column 2 and is screwed to the main screw 19 and rises and falls vertically with the rotation of the main screw 19, and a main drive motor 18 that is arranged at the lower end of the machine base 1 and is used to drive the main screw 19 to rotate forward and reverse.

[0051] The guide sliding member is a guide sliding vehicle 24, and a guide groove 301 is passed through the support arm 3 along its length direction. The guide sliding vehicle 24 includes a vehicle body in the shape of an "I". The upper and lower parallel movable plates 241 of the vehicle body are respectively provided with rollers 243 that roll and fit with the upper and lower ends of the support arm 3. The movable plates 241 are connected into one by a guide block 242 that is guided and plugged into the guide groove 301. The first pull rope 20 and the second pull rope 21 are fixedly connected to the guide block 242 at both ends along the moving direction.

[0052] In order to reduce the probability of interference during the lifting and lowering of the counterweight block 26, the counterweight block 26 is vertically guided and slid on the outer wall of the supporting core column 2. A first guide rail 201 for the counterweight block 26 to be embedded and guided is vertically protruded on the outer wall of the supporting core column 2. In order to improve the stability of the lifting and lowering of the counterweight block 26, each guide sliding vehicle 24 is equipped with two second pull ropes 21. The two second pull ropes 21 are respectively fixedly connected to the side walls opposite to the counterweight block 26. The two second pull ropes 21 are away from the end of the counterweight block 26 and the guide block 242 is away from the supporting core column. One end of the column 2 is connected, and each second pull rope 21 is reversed through three second fixed pulleys 23. Among the three second fixed pulleys 23, two are located at the end of the support arm 3 away from the support core column 2 and are arranged to rotate horizontally, and one is located on the side wall of the support arm 3 above the counterweight block 26 and is arranged to rotate vertically. Fixed bosses 27 for fixing the second pull rope 21 are provided on both sides of the counterweight block 26; the first pull rope 20 is reversed through the first fixed pulley 22, and the first fixed pulley 22 is rotatably set at the end of the support arm 3 close to the support core column 2.

[0053] When the counterweight block 26 rises to its maximum stroke, the snap-on picking piece is closest to the supporting core column 2. At this time, a limiting structure is provided between the counterweight block 26 and the supporting core column 2 to relieve the tension of the first pull rope 20 and the second pull rope 21. The limiting structure includes a limiting groove 261 recessed on the side of the counterweight block 26 close to the supporting core column 2, a limiting block 32 elastically and retractably arranged on the outer wall of the supporting core column 2 and capable of being plugged into and matched with the aligned limiting groove 261 under normal circumstances, and an electromagnet 30 that drives the limiting block 32 to retract when energized. A receiving groove is recessed on the supporting core column 2, and the electromagnet 30 is fixed at the bottom of the receiving groove. The limiting block 32 elastically retracts in the receiving groove, and a pressure spring 31 fixed to the limiting block 32 and the electromagnet 30 is provided between the limiting block 32 and the electromagnet 30. An iron block is fixed to one end of the limiting block 32 close to the electromagnet 30.

[0054] The buckle assembly station includes two guard plate positioning and placement mechanisms that are horizontally spaced and parallel to the support arm 3, and two buckle feeding mechanisms. The buckle feeding mechanism includes a vibrating loading tray 4, a buckle conveyor 5 and a buckle lifting part. The buckle conveyor 5 is a conveyor belt. The buckle conveyor 5 conveys the buckles provided by the vibrating loading tray 4 to the buckle lifting part, and the buckle lifting part delivers the buckles to the adsorption type clamp.

[0055] The buckle lifting part includes a material receiving seat 15 located at the discharge end of the buckle conveyor 5, and a material receiving trough 1501 is provided on the material receiving seat 15. The opening of the material receiving trough 1501 faces the buckle conveyor 5 and the adsorption type clamp. When the material receiving seat 15 rises vertically, it enters the material receiving trough 1501 and pushes the buckle to the lifting part 16 that is in contact with the adsorption surface of the adsorption type clamp. The lifting and lowering of the lifting part 16 is controlled by the pushing driving part 17. The pushing driving part 17 is a vertically arranged cylinder, and the piston rod of the cylinder is arranged vertically upward.

[0056] The adsorption type clamp includes an adsorption part 8, the lower end of which is provided with a covering groove 801 for the clip to enter with an opening downward, a second guide rail 11 is vertically fixed on the slide of the Z-axis screw slide assembly 7, a second slider 12 is fixed on the upper end of the adsorption part 8, and a fixed block 14 is fixed on the slide of the Z-axis screw slide assembly 7. A buffer elastic part 13 is arranged between the fixed block and the adsorption part 8, and the buffer elastic part 13 is a buffer spring. The adsorption part 8 is in a state of descending to the maximum stroke under the action of the buffer elastic part 13 in normal state, and an air duct is arranged inside the adsorption part 8, one end of the air duct is located at the bottom of the covering groove 801 and forms an adsorption port 802, and the other end of the air duct is located on the side wall of the adsorption part 8 and is connected to the air pump.

[0057] The guard plate positioning and placement mechanism includes a placement seat 9 with a product positioning groove and a rotatable and liftable pressure piece 10. The pressure piece 10 adopts a lifting and rotating cylinder. The lifting and rotating cylinder is a standard part and its structure is not described here. Before discharging, the pressure piece 10 rotates to the outside of the product positioning groove and is in an upward avoidance state; after discharging, the pressure piece 10 rotates to the inside of the product positioning groove and is in a state of pressing the product down.

[0058] In order to ensure the movement accuracy of the adsorption type clamp along the direction of the support arm 3, an alignment mark 28 is provided between the housing end wall of the forward and reverse screw slide assembly 6 and the side wall of the support arm 3 for detecting whether the first pull rope 20 is deformed when the adsorption part 8 moves to the maximum stroke in the direction of the support core column 2. A detection mark 29 is provided on the outer wall of the support core column 2 for aligning with the bottom surface of the counterweight block 26 when the adsorption part 8 moves to the maximum stroke in the direction of the support core column 2 and for detecting whether the second pull rope 21 is deformed. By observing the alignment of the alignment mark 28 and the alignment of the detection mark 29 with the bottom of the counterweight block 26, it can be To identify whether the first pull rope 20 or the second pull rope 21 has tensile deformation and the specific amount of deformation, a scale can be set on the outer wall of the support core column 2 below the detection mark 29, and a scale can be set on the outer wall of the support arm 3 on the side of the alignment mark 28 away from the support core column 2. Once deformation is found, the length of the first pull rope 20 or the second pull rope 21 can be adjusted to shorten the amount of deformation; error compensation can also be performed by modifying the moving distance of the slide in the main screw slide assembly. This method is only applicable when the three groups of pull rope assemblies have the same deformation amount; errors can also be eliminated by replacing the first pull rope 20 or the second pull rope 21.

[0059] All electronic control components are connected to a PLC controller, and the existing logic programming in the PLC controller is used to open and close all components and switch them in sequence.

[0060] When in idle state, the slides of the forward and reverse screw slide assembly 6 are relatively close to the nearest position; the housing of the forward and reverse screw slide assembly 6 moves to the nearest position to the supporting core column 2, that is, the main slide 25 of the main screw slide assembly is in a state of descending to the lowest position; the adsorption part 8 is in a state of rising to the highest position; the counterweight block 26 is in a state of rising to the highest position; and the electromagnet 30 is in a power-off state.

[0061] When in operation, the guard plate is placed in the product positioning groove of the placement seat 9 manually or by a robotic arm, and the pressing piece 10 rotates to the top of the guard plate and presses down to press the guard plate; the vibrating loading plate 4 vibrates to discharge the material, and the buckles are delivered one by one to the receiving trough 1501 through the buckle conveying piece 5. Every time the adsorption piece rises and falls, the buckle conveying piece 5 delivers a buckle forward; the screw of the Z-axis screw slide assembly 7 rotates to drive the adsorption piece 8 to descend to the top of the receiving trough 1501, and the top pressure driving piece 17 extends to drive the ejecting piece 16 to rise, and the ejecting piece 16 pushes the buckle into the coating groove 801, the air pump draws air, and the adsorption piece 8 sucks the buckle; the top pressure driving piece 17 retracts; the slides of the forward and reverse screw slide assemblies 6 move back to back to the horizontal position perpendicular to the direction of the support arm 3 corresponding to the first buckle installation position, the main slide 25 rises, and the forward and reverse screw slide assemblies 6 The casing moves along the support arm 3 to the first clip installation position. The clip installation position closest to the support core column 2 is the first clip installation position. As the distance from the support core column 2 gradually increases, it is named the second clip installation position to the Nth clip installation position in sequence. The slide of the Z-axis screw slide assembly 7 descends, causing the adsorption part 8 to descend and press the clip to be assembled on the first clip installation position of the guard plate; the adsorption part 8 then rises and resets, and the casing of the forward and reverse screw slide assembly 6 is reset to the initial position toward the support core column 2. At the same time, the slide of the forward and reverse screw slide assembly 6 is relatively close to the initial position, and then refers to the above steps to absorb a clip again and install it to the second clip installation position of the guard plate, and then repeat the operation in sequence until the assembly of all clips on the guard plate is completed. This equipment can simultaneously perform the synchronous assembly of clips on 6 guard plates.

[0062] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automatic assembly tool for automobile parts buckles, comprising a buckle picking and placing robot and a buckle assembly station, wherein the buckle assembly station comprises a buckle feeding mechanism and a guard plate positioning and placement mechanism, characterized in that: Several groups of buckle assembly stations are evenly spaced around the circumference of the buckle pick-and-place robot; The snap-on pick-and-place robot comprises a vertically arranged support core column (2) and a plurality of snap-on pick-and-place modules corresponding to product assembly stations and distributed at intervals in the circumferential direction of the outer ring wall of the support core column (2). The snap-on pick-and-place module comprises a support arm (3) with one end fixed to the support core column (2) and the other end extending horizontally outward, and a snap-on pick-up member that slides along the length direction of the support arm (3) and can reciprocate vertically and horizontally perpendicular to the support arm (3). All the snap-on pick-up members are synchronously reciprocated along the length direction of the support arm (3) through a guide sliding member and are controlled by a counterweight drive assembly. The counterweight drive assembly includes a main screw slide assembly vertically arranged in a supporting core column (2), a first pull rope (20) connected between a guide slide and a main slide (25) of the main screw slide assembly, and a second pull rope (21) connected to the other end of the guide slide. The end of the second pull rope (21) away from the guide slide is connected to a counterweight block (26) with a downward tendency.

2. The automatic assembly tool for automobile parts buckles according to claim 1, characterized in that: The counterweight block (26) is vertically guided and slid on the outer wall of the support core column (2); the end of the second pull rope (21) away from the counterweight block (26) is connected to the end of the guide sliding member away from the support core column (2); and a plurality of second fixed pulleys (23) for realizing the reversal of the second pull rope (21) are provided on the end of the support arm (3) away from the support core column (2) and the outer wall of the support arm (3).

3. The automatic assembly tool for automobile parts buckles according to claim 2, characterized in that: Two second pull ropes (21) are provided and are fixedly connected from one end of the support arm (3) away from the support core column (2) along the outer walls of both sides of the support arm (3) to the fixed protrusions (27) on both sides of the counterweight (26).

4. The automatic assembly tool for automobile parts buckles according to claim 2 or 3, characterized in that: When the counterweight (26) rises to its maximum stroke, the snap-on pick-up member is closest to the support core column (2). At this time, a limiting structure is provided between the counterweight (26) and the support core column (2) to relieve the tension of the first pull rope (20) and the second pull rope (21).

5. The automatic assembly tool for automobile parts buckles according to claim 4, characterized in that: The limiting structure comprises a limiting groove (261) recessed on one side of the counterweight (26) close to the supporting core column (2), a limiting block (32) elastically and telescopically arranged on the outer wall of the supporting core column (2) and capable of being plugged into and matched with the limiting groove (261) after alignment in a normal state, and an electromagnet (30) for driving the limiting block (32) to retract when energized.

6. The automatic assembly tool for automobile parts buckles according to claim 1, characterized in that: The guide sliding member is a guide sliding vehicle (24). A guide groove (301) is passed through the support arm (3) along its length direction. The guide sliding vehicle (24) includes a vehicle body in the shape of an "I" character. The upper and lower parallel movable plates (241) of the vehicle body are respectively provided with rollers (243) respectively rolling and fitting with the upper and lower ends of the support arm (3). The movable plates (241) are connected to form an integral body through a guide block (242) which is inserted and fitted with the guide groove (301).

7. The automatic assembly tool for automobile parts buckles according to claim 1, characterized in that: The buckle assembly station includes two guard plate positioning and placement mechanisms that are horizontally spaced and parallel to the support arm (3) and two buckle feeding mechanisms. The buckle feeding mechanism includes a vibrating loading tray (4), a buckle conveying member (5) and a buckle lifting member. The buckle conveying member (5) conveys the buckles provided by the vibrating loading tray (4) to the buckle lifting member, and the buckle lifting member delivers the buckles to the buckle picking member. The buckle picking member includes two adsorption-type clamps that are vertically lifted and lowered by a Z-axis screw slide assembly (7) and a forward and reverse screw slide assembly (6) that enables the housings of the two Z-axis screw slide assemblies (7) to move relatively close to or away from each other synchronously along a horizontal direction perpendicular to the support arm (3).

8. The automatic assembly tool for automobile parts buckles according to claim 7, characterized in that: The buckle lifting member includes a material receiving seat (15) located at the discharge end of the buckle conveying member (5), a material receiving trough (1501) is provided on the material receiving seat (15), the opening of the material receiving trough (1501) faces the buckle conveying member (5) and the adsorption type clamp, and the material receiving seat (15) vertically rises to enter the material receiving trough (1501) and push the buckle to the lifting member (16) that is in contact with the adsorption surface of the adsorption type clamp, and the lifting and lowering of the lifting member (16) is controlled by the top pressure driving member (17).

9. The automatic assembly tool for automobile parts buckles according to claim 7, characterized in that: The adsorption type clamp includes an adsorption member (8) having a covering groove (801) at the lower end for the buckle to enter with an opening downward, the upper end of the adsorption member (8) is guided to slide on the slide of the Z-axis screw slide assembly (7) and tends to descend to the maximum stroke through the buffer elastic member (13), and an air channel is provided inside the adsorption member (8), one end of the air channel is located at the bottom of the covering groove (801) and forms an adsorption port (802), and the other end of the air channel is located on the side wall of the adsorption member (8) and is connected to the exhaust assembly.

10. The automatic assembly tool for automobile parts buckles according to claim 7, characterized in that: A positioning mark (28) is provided between the housing end wall of the forward and reverse screw slide assembly (6) and the side wall of the support arm (3) for detecting whether the first pull rope (20) is deformed when the buckle pick-up member moves to the maximum stroke in the direction of the support core column (2), and a detection mark (29) is provided on the support core column (2) for aligning with the bottom surface of the counterweight block (26) when the buckle pick-up member moves to the maximum stroke in the direction of the support core column (2) and for detecting whether the second pull rope (21) is deformed.

11. The automatic assembly tool for automobile parts buckles according to claim 1, characterized in that: The guard plate positioning and placing mechanism comprises a placing seat (9) with a product positioning groove and a rotatable and elevating pressing piece (10). Before discharging the material, the pressing piece (10) rotates to the outside of the product positioning groove and is in an ascending and avoiding state; after discharging the material, the pressing piece (10) rotates to the inside of the product positioning groove and is in a state of pressing the product downward.

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