Floating mechanism for automatic assembly of robot

Abstract

The utility model discloses a floating mechanism for automatic assembly of a robot, and belongs to the technical field of automatic assembly. According to the technical scheme, a mounting plate and a bottom plate are vertically arranged, a jacking air cylinder is fixed to the bottom of the bottom plate, the output end of the jacking air cylinder penetrates through the bottom plate and is connected with the mounting plate, a plurality of guide columns are arranged at the bottom of the mounting plate, the bottoms of the guide columns penetrate through the bottom plate and guide sleeves on the bottom plate, and the guide columns are in sliding fit with the guide sleeves; and a steel ball roller and a limiting pin which are used for positioning the assembly jig are arranged on the mounting plate. The utility model has the beneficial effects that the steel ball roller is matched with the inner concave cambered surface, so that the movement error of the robot is corrected, the assembly precision is improved, the friction and collision between workpieces caused by the error are avoided, and the assembly quality is improved.

Description

Technical Field

[0001] The utility model relates to a floating mechanism for automatic robot assembly, belonging to the technical field of automatic assembly. Background Art

[0002] In the assembly operation of a robot, since there are slight differences in the movement trajectory of the robot each time, these slight differences will cause friction and collision between workpieces in high-precision assembly. In the light case, it will affect the assembly quality, and in the serious case, it will cause the workpiece to be scrapped or damage the robot. Therefore, a set of floating mechanism needs to be designed to solve the above problems. Summary of the Utility Model

[0003] To solve the defects existing in the prior art, the purpose of the utility model is to provide a floating mechanism for automatic robot assembly that corrects errors and ensures assembly accuracy.

[0004] The technical solution of the utility model is: a floating mechanism for automatic robot assembly, including an upper and lower installation plate and a bottom plate. A lifting cylinder is fixed at the bottom of the bottom plate. The output end of the lifting cylinder penetrates through the bottom plate and is connected to the installation plate. A plurality of guide posts are arranged at the bottom of the installation plate. The bottom of the guide posts penetrates through the bottom plate and the guide sleeves on the bottom plate. The guide posts are slidably matched with the guide sleeves. A limit pad is arranged at the bottom of the guide posts. Steel ball rollers and limit pins for positioning the assembly jig are arranged on the installation plate. A blocking cylinder is fixed on the side of the bottom plate. The blocking working end at the top of the blocking cylinder can move upward to the upper side of the installation plate. A roller is arranged on the blocking working end.

[0005] There are four steel ball rollers, which are respectively located at the four corners of the installation plate in different directions.

[0006] The output end of the lifting cylinder is connected to the center of the installation plate.

[0007] There are three guide posts, which are distributed in an equilateral triangle.

[0008] There are two limit pins, which are respectively located in the middle of both sides of the installation plate.

[0009] The assembly jig is located on the floating return plate. An inner concave arc surface matching with the steel ball rollers is arranged at the bottom of the floating return plate.

[0010] A limit hole matching with the limit pin is arranged at the bottom of the floating return plate.

[0011] The beneficial effect of the utility model is: the steel ball rollers are matched with the inner concave arc surface to correct the movement error of the robot, improve the assembly accuracy, avoid the friction and collision between workpieces caused by the error, and improve the assembly quality. Brief Description of the Drawings

[0012] Figure 1 It is a three-dimensional view of the utility model;

[0013] Figure 2 This is the working state diagram of the present utility model.

[0014] The reference numerals in the figure are as follows: 1, base plate; 2, guide sleeve; 3, guide post; 4, limit pad; 5, mounting plate; 6, steel ball roller; 7, limit pin; 8, lifting cylinder; 9, assembly jig; 10, floating return plate; 11, blocking cylinder. Specific embodiments

[0015] The following will further describe the present utility model in conjunction with the attached Figure 1-2 drawings:

[0016] A floating mechanism for robot automatic assembly includes a mounting plate 5 and a base plate 1 arranged up and down. A lifting cylinder 8 is fixed to the bottom of the base plate 1. The output end of the lifting cylinder 8 penetrates through the base plate 1 and is connected to the center of the bottom of the mounting plate 5. Three guide posts 3 distributed in an equilateral triangle are arranged at the bottom of the mounting plate 5. The bottom of the guide posts 3 penetrates through the base plate 1 and the guide sleeve 2 on the base plate 1. The guide posts 3 are slidably matched with the guide sleeve 2 to accurately guide the up and down movement of the mounting 5. A limit pad 4 is arranged at the bottom of the guide posts 3. The limit pad 4 is used to limit the maximum stroke of the guide posts 3, so that the height of the mounting plate 5 lifted each time is the same. Four steel ball rollers 6 and two limit pins 7 for positioning the assembly jig 9 are arranged on the mounting plate 5. The four steel ball rollers 6 are located at the four corners of the mounting plate 5 in different directions, and the two limit pins 7 are located in the middle of both sides of the mounting plate 5. A blocking cylinder 11 is fixed to the side of the base plate 1. The blocking working end at the top of the blocking cylinder 11 can move upward to the upper side of the mounting plate 5. A roller is arranged on the blocking working end. When the assembly jig 9 is conveyed above the floating mechanism, it will be blocked by the blocking cylinder 11. The roller can prevent the wear of the assembly jig 9 caused by the longitudinal relative movement with the assembly jig 9.

[0017] The assembly jig 9 is located on the floating return plate 10. An inner concave arc surface matched with the steel ball roller 6 is arranged at the bottom of the floating return plate 10. The steel ball roller 6 can roll in any direction. After the assembly is completed, the steel ball roller 6 will roll to the arc top of the inner concave arc surface of the floating return plate 10, so as to realize the accurate positioning of the floating return plate 10. A limit hole matched with the limit pin 7 is arranged at the bottom of the floating return plate 10 to position the floating return plate 10 and prevent the floating return plate 10 from moving longitudinally after positioning.

[0018] When the assembly fixture 9 is conveyed above the mounting plate 5, it will be blocked by the blocking cylinder 11. After that, the lifting cylinder 8 lifts the mounting plate 5, and the assembly fixture 9 is lifted through the floating alignment plate 10. When the robot assembles on the assembly fixture 9, the assembly fixture 9 moves in all directions along with the robot during assembly. After each assembly is completed, the assembly fixture has to be placed back on this floating mechanism. When placing it back, the steel ball roller 6 will move to the inner arc top of the concave arc surface of the floating alignment plate 10, so that the assembly fixture 9 can be accurately aligned back to the initial state and wait for the next step of assembly.

[0019] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A floating mechanism for robot automatic assembly, characterized in that: The utility model comprises a mounting plate (5) and a bottom plate (1) arranged up and down, a lifting cylinder (8) is fixed at the bottom of the bottom plate (1), the output end of the lifting cylinder (8) passes through the bottom plate (1) and is connected to the mounting plate (5), a plurality of guide pillars (3) are arranged at the bottom of the mounting plate (5), the bottom of the guide pillars (3) passes through the bottom plate (1) and the guide sleeves (2) on the bottom plate (1), the guide pillars (3) and the guide sleeves (2) are slidably matched, a limiting pad (4) is arranged at the bottom of the guide pillars (3), a steel ball roller (6) and a limiting pin (7) for positioning the assembly fixture (9) are arranged on the mounting plate (5), a blocking cylinder (11) is fixed at the side of the bottom plate (1), a blocking working end at the top of the blocking cylinder (11) can move upward to the upper side of the mounting plate (5), and a roller is arranged at the blocking working end.

2. The floating mechanism for robot automatic assembly according to claim 1, characterized in that: There are four steel ball rollers (6) located at the four corners of the direction mounting plate (5).

3. The floating mechanism for robot automatic assembly according to claim 1, characterized in that: The output end of the lifting cylinder (8) is connected to the center of the mounting plate (5).

4. The floating mechanism for robot automatic assembly according to claim 1, characterized in that: There are three guide pillars (3) distributed in an equilateral triangle.

5. The floating mechanism for robot automatic assembly according to claim 1, characterized in that: There are two limit pins (7), which are located in the middle of both sides of the mounting plate (5).

6. The floating mechanism for robot automatic assembly according to claim 1, characterized in that: The assembly jig (9) is located on a floating return plate (10), and the bottom of the floating return plate (10) is provided with an inner concave arc surface that cooperates with the steel ball roller (6).

7. The floating mechanism for robot automatic assembly according to claim 6, characterized in that: The bottom of the floating return plate (10) is provided with a limiting hole which cooperates with the limiting pin (7).

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