Telescopic pedal type automobile assembly line AGV and assembly method thereof

Abstract

The invention relates to a telescopic pedal type automobile assembly line AGV and an assembly method thereof.The telescopic pedal type automobile assembly line AGV comprises an AGV body, driving wheels, a lifter and a telescopic pedal are arranged on the AGV body, the AGV body is placed on a process tray on the lifter, and after the AGV walks to a preset position through the driving wheels and meets logic signals, the telescopic pedal automatically stretches out through program instructions, and the AGV body is driven to move to the preset position. Front-back butt joint and end-to-end connection of the AGVs are achieved, and building of the assembly platform is completed; the telescopic foot board can meet customized production requirements; the AGV has the foot board stretching and retracting function, an operator can assemble related parts on the foot board, the stretching and retracting length of the AGV foot board can be adjusted, and the requirements of line body station pitches of different clients are met; the advantage of flexible production is achieved, and the requirement for continuous operation of the same production line, namely STOPamp, can be met through the telescopic pedal type AGV; two production modes of GO; the telescopic pedal type AGV for the automobile assembly line has the great advantage on the requirement for the complex assembly technology.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile assembly, and in particular relates to a telescopic step-type automobile assembly line AGV and an assembly method thereof. Background Art

[0002] In recent years, the automotive industry has attached increasing importance to flexible production and customized production. Traditional automobile interior and exterior assembly uses plate chains, which can no longer meet the needs of flexible production and customization. Based on this, it is urgent to develop a new type of automobile assembly line AGV to replace the traditional plate chain production line to meet customized production needs. Summary of the invention

[0003] The purpose of the present invention is to provide a telescopic step-type automobile assembly line AGV for automobile assembly lines to solve the problem of flexible production and meet the two production modes of continuous operation and STOP&GO on the same production line.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A telescopic step-type automobile assembly line AGV, comprising an AGV body, on which two sets of driving wheels 1, a lift 2 and two sets of telescopic steps 3 are arranged;

[0006] The driving wheel 1 adopts a differential drive mode and is used in conjunction with a floating mechanism; the lift 2 is arranged in the middle of the AGV body and adopts a scissor lift structure driven by a motor; the telescopic platform 3 has a guiding function, including a platform, a gear rack and a servo motor, and is driven by a gear rack. The servo motor is used in conjunction with an encoder to drive the gear rack to adjust the telescopic length of the platform; a process tray 4 for placing the body is provided on the lift 2;

[0007] The external dispatching system is respectively connected to the driving wheel 1 and the two sets of telescopic steps 3. When it is determined that there is vacant space in the line, it can send an entry command to make the driving wheel 1 move after combining the line logic signal to determine whether the AGV meets the entry conditions. After reaching the predetermined position and satisfying the logic signal, the telescopic step 3 is automatically extended through program instructions. Laser ranging sensors are installed at the front and rear of the AGV, which can determine the distance to the vehicle in front in real time. After reaching the set distance, the front and rear are automatically docked in the line, and the head and tail are connected to complete the construction of the assembly platform.

[0008] Furthermore, the two sets of driving wheels 1 are arranged at the center line of the AGV body, with one set provided at the front and one set provided at the rear.

[0009] Furthermore, the lift 2 is connected to the AGV body by bolts.

[0010] Furthermore, a cam roller and a guide groove are arranged on the step to realize the guiding function of the structure.

[0011] Furthermore, the telescopic step 3 is provided with one set at the front and rear of the vehicle.

[0012] Furthermore, the telescopic platform 3 is used by the operator to assemble related components; its telescopic length can be adjusted to meet the requirements of different customer line workstation pitches.

[0013] Furthermore, the process tray 4 is connected to the elevator 2 by bolts for positioning the vehicle body.

[0014] A method for assembling a telescopic step-type automobile assembly line AGV comprises the following steps:

[0015] A. The dispatching system determines that there is a vacant position on the line, and after combining the line logic signal to determine that the AGV meets the entry conditions, it sends an entry instruction to the AGV;

[0016] B. The AGV enters the line and performs a pursuit action. The laser ranging sensor determines the distance to the vehicle in front in real time. After reaching the set distance, it runs at a constant speed.

[0017] Furthermore, during the assembly process, it is necessary to leave the main line and go to the sub-packaging line for sub-packaging.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The telescopic step type automobile assembly line AGV of the present invention is a telescopic automobile assembly line AGV, which can automatically dock front and back in the line body, and can replace the traditional plate chain by connecting end to end. The telescopic step can meet the customized production needs;

[0020] 2. The AGV has a telescopic function, and the operator can assemble related parts on the platform. The telescopic length of the AGV platform can be adjusted to meet the needs of different customers' line workstation pitches;

[0021] 3. Compared with the traditional plate chain production line, it has the advantage of flexible production, and the telescopic step-type automobile assembly line AGV can meet the two production modes of continuous operation and STOP&GO on the same production line;

[0022] 4. The telescopic step-type automobile assembly line AGV has great advantages in meeting complex assembly process requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a diagram of the main integrated sensors and layout structure of the present invention;

[0025] Figure 2 This is a schematic diagram of controlling the distance between the rear vehicle and the front vehicle by using the PID algorithm of the present invention;

[0026] Figure 3 This is a schematic diagram of a simulated production line.

[0027] In the figure, 1. driving wheel 2. elevator 3. telescopic platform 4. process tray. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with embodiments:

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0031] like Figure 1 The retractable step-type automobile assembly line AGV of the present invention is suitable for automobile assembly line process assembly, especially automobile interior and exterior assembly lines. It has a lifting function to meet the height requirements of different processes. The step is retractable and the retractable length is adjustable to meet the flexible production needs of the production line.

[0032] The telescopic step-type automobile assembly line AGV of the present invention comprises an AGV body, on which two sets of driving wheels 1, a lift 2 and two sets of telescopic steps 3 are arranged.

[0033] There are two sets of driving wheels 1, which are arranged at the center line of the AGV body, one set at the front and one set at the rear. The driving wheels 1 adopt a differential drive mode and are used in conjunction with a floating mechanism.

[0034] The lift 2 is arranged in the middle of the AGV body, adopts a scissor lift structure driven by a motor, and is connected to the AGV body with bolts.

[0035] The telescopic step 3 includes a step, a gear rack and a servo motor. Cam rollers and guide grooves are arranged on the step to realize the guiding function of the structure. The telescopic step 3 realizes the transmission of the mechanism through the gear rack. The servo motor is used in conjunction with the encoder to drive the gear rack to realize the adjustable telescopic length and precise positioning of the step. The telescopic step 3 is arranged one set at the front and rear of the vehicle.

[0036] The process tray 4 is placed on the lift 2 and connected by bolts to place and position the vehicle body.

[0037] The vehicle body is placed on the process tray 4, and the AGV moves via the driving wheel 1. When it reaches the predetermined position and the logic signal is met, the telescopic platform 3 is automatically extended through program instructions, so that the front and rear of the AGV are connected and the head and tail are connected, completing the construction of the assembly platform.

[0038] Specifically, the external dispatching system is respectively controlled and connected with the driving wheel 1 and two sets of telescopic steps 3. When it is determined that there is vacant space in the line, it can send an entry command to make the driving wheel 1 move after combining the line logic signal to determine whether the AGV meets the entry conditions. After reaching the predetermined position and satisfying the logic signal, the telescopic step 3 is automatically extended through program instructions. Laser ranging sensors are installed at the front and rear of the AGV, which can determine the distance to the vehicle in front in real time. After reaching the set distance, the front and rear are automatically docked in the line, and the head and tail are connected to complete the construction of the assembly platform.

[0039] There are two scenarios for automobile assembly lines: scenario one: mass production of more than 40JPH; scenario two: during the product assembly process, it is necessary to leave the main line and go to the sub-assembly line for sub-assembly. In the above two assembly scenarios, the telescopic step-type automobile assembly line AGV has the advantage of flexible production compared with the traditional plate chain production line. And the telescopic step-type automobile assembly line AGV can meet the two production modes of continuous operation and STOP&GO on the same production line. The telescopic step-type automobile assembly line AGV has great advantages for complex assembly process requirements.

[0040] In the present invention, AGV is used to replace the traditional plate chain, and the distance measuring sensors installed at the front and rear of the AGV are used to achieve automatic docking of the front and rear of the line body, and the head and tail are connected. The AGV has a telescopic function of the platform, and the operator can assemble related parts on the platform; the telescopic length of the AGV platform can be adjusted to meet the needs of different customer line body workstation pitches.

[0041] like Figure 2 As shown, the working process of the telescopic step type automobile assembly line AGV of the present invention includes the following steps:

[0042] 1. The dispatching system determines that there is a vacant position on the line, and after judging that the AGV meets the entry conditions based on the line logic signal, it sends an entry instruction to the AGV;

[0043] 2. The AGV enters the line and performs a pursuit action. The laser ranging sensor is used to determine the distance to the vehicle in front in real time. After reaching the set distance, it runs at a constant speed.

[0044] like Figure 3 As shown, during the product assembly process, it is necessary to leave the main line and go to the sub-packaging line for sub-packaging.

[0045] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A telescopic step-type automobile assembly line AGV, characterized in that: The AGV comprises an AGV body, on which two sets of driving wheels (1), a lift (2) and two sets of telescopic steps (3) are arranged; The driving wheel (1) adopts a differential drive mode and is used in conjunction with a floating mechanism; the lifter (2) is arranged in the middle of the AGV body and adopts a scissor lift structure driven by a motor; the telescopic platform (3) has a guiding function and includes a platform, a gear rack and a servo motor, and transmission is achieved through the gear rack. The servo motor is used in conjunction with an encoder to drive the gear rack to adjust the telescopic length of the platform; a process tray (4) for placing the body is provided on the lifter (2); The external dispatching system is respectively connected to the driving wheel (1) and the two sets of telescopic steps (3) for control. When it is determined that there is a vacant position in the line, the AGV can send an entry instruction to make the driving wheel (1) move after judging that the AGV meets the entry conditions in combination with the line logic signal. After reaching the predetermined position and satisfying the logic signal, the telescopic step (3) is automatically extended through program instructions. Laser distance measurement sensors are installed at the front and rear of the AGV, which can determine the distance to the preceding vehicle in real time. After reaching the set distance, the front and rear of the AGV are automatically docked in the line, and the head and tail are connected to complete the construction of the assembly platform.

2. The telescopic step-type automobile assembly line AGV according to claim 1, characterized in that: The two sets of driving wheels (1) are arranged at the center line of the AGV body, with one set provided at the front and one set provided at the rear.

3. The telescopic step-type automobile assembly line AGV according to claim 1, characterized in that: The lift (2) is connected to the AGV body by bolts.

4. The telescopic step-type automobile assembly line AGV according to claim 1, characterized in that: The tread plate is provided with a cam roller and a guide groove to realize the guiding function of the structure.

5. The telescopic step-type automobile assembly line AGV according to claim 1, characterized in that: The telescopic step platform (3) is provided with one set at the front and rear of the vehicle respectively.

6. The telescopic step-type automobile assembly line AGV according to claim 1, characterized in that: The telescopic step (3) is used by an operator to assemble relevant parts; Its telescopic length can be adjusted to meet the needs of different customers' line workstation pitches.

7. The telescopic step-type automobile assembly line AGV according to claim 1, characterized in that: The process tray (4) is connected to the elevator (2) via bolts for positioning the vehicle body.

8. A method for assembling an AGV of a telescopic step-type automobile assembly line, characterized in that: The following steps are involved: A. The dispatching system determines that there is a vacant position on the line, and after combining the line logic signal to determine that the AGV meets the entry conditions, it sends an entry instruction to the AGV; B. The AGV enters the line and performs a pursuit action. The laser ranging sensor determines the distance to the vehicle in front in real time. After reaching the set distance, it runs at a constant speed.

9. The assembly method of a telescopic step-type automobile assembly line AGV according to claim 8, characterized in that: During the assembly process, it is necessary to leave the main line and go to the sub-assembly line for sub-assembly.

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