Method for synchronizing control of vehicle assembly and vehicle assembly system

Abstract

The application discloses a kind of synchronous control method and automobile assembly system of automobile assembly.The synchronous control method comprises: the first state signal of first counting trigger switch is acquired in real time;First state signal includes first trigger signal;When first trigger signal is acquired, control first encoder starts counting, and the first count value of first encoder is acquired in real time;The second state signal of second counting trigger switch is acquired in real time;Second state signal includes second trigger signal;When second trigger signal is acquired, control second encoder starts counting, and the second count value of second encoder is acquired in real time;According to first count value and second count value, control vehicle body carrier and mounting device are synchronized.The technical scheme of the application can realize vehicle body carrier and mounting device synchronization without mechanical structure, which is conducive to improving the efficiency of whole vehicle assembly, and at the same time, reduce cost.

Description

Technical Field

[0001] This invention relates to the field of automobile assembly technology, and in particular to a synchronous control method and system for automobile assembly. Background Technology

[0002] Automobile assembly is one of the most important technological processes in automobile manufacturing. In the final vehicle assembly process, the static assembly technology requires frequent start-stop operations, which is inefficient and cannot meet the requirements of high-efficiency and high-quality vehicle production. Therefore, the synchronous assembly method has emerged.

[0003] In the engine and rear axle mounting process, synchronous mounting typically employs mechanical synchronization, which uses mechanical structures to synchronize the vehicle body and mounting device. However, mechanical synchronization requires high precision and consistency at the connections between the vehicle body and mounting device, and the large number of vehicle bodies and mounting devices necessitates significant maintenance, leading to higher costs. Furthermore, if the precision of some vehicle bodies and mounting devices exceeds the standard range, it will affect the engine and rear axle mounting, thereby impacting production line uptime and reducing production efficiency. Summary of the Invention

[0004] This invention provides a synchronous control method and system for automobile assembly to solve the problems existing in the prior art, improve the efficiency of vehicle assembly, and reduce costs.

[0005] In a first aspect, the present invention provides a synchronous control method for automobile assembly, executed by an automobile assembly system, the automobile assembly system comprising: a vehicle body carrier, a mounting device, a first encoder, a second encoder, a first counting trigger switch, and a second counting trigger switch; the vehicle body carrier moves along a first moving path; the mounting device moves along a second moving path; the first moving path and the second moving path are parallel; the first counting trigger switch is disposed on the first moving path; the second counting trigger switch is disposed on the second moving path; the synchronous control method comprises: The first status signal of the first counting trigger switch is acquired in real time; the first status signal includes a first trigger signal; wherein, the first trigger signal is the signal acquired when the vehicle moves to the first counting trigger switch; Upon receiving the first trigger signal, control the first encoder to start counting and acquire the first count value of the first encoder in real time; The second status signal of the second counting trigger switch is acquired in real time; the second status signal includes a second trigger signal; wherein the second trigger signal is the signal acquired when the mounting device moves to the second counting trigger switch; Upon receiving the second trigger signal, control the second encoder to start counting, and acquire the second count value of the second encoder in real time; Based on the first count value and the second count value, the vehicle body and the mounting device are synchronized.

[0006] Optionally, based on the first count value and the second count value, controlling the vehicle body and the mounting device to synchronize includes: Determine whether the difference between the first count value and the second count value is within a set range; If so, then the vehicle body and the mounting device are synchronized; If not, then based on the first count value and the second count value, control the moving speed of the mounting device and / or the vehicle body, and return to the step of determining whether the difference between the first count value and the second count value is within the set range.

[0007] Optionally, the vehicle assembly system further includes a waiting trigger switch; the waiting trigger switch is disposed on the second movement path, and the second counting trigger switch and the waiting trigger switch are arranged sequentially along the movement direction of the mounting device; After controlling the second encoder to start counting and acquiring the second count value of the second encoder in real time, the method further includes: The third state signal of the waiting trigger switch is acquired in real time; the third state signal includes a waiting trigger signal; wherein the waiting trigger signal is the signal acquired when the mounting device moves to the waiting trigger switch; Upon receiving the waiting trigger signal, the device is controlled to stop moving; Until the vehicle body moves to the preset position, the step of controlling the synchronization of the vehicle body and the mounting device according to the first count value and the second count value is executed.

[0008] Optionally, the vehicle assembly system further includes a vehicle shortage trigger switch and a stop trigger switch; the vehicle shortage trigger switch and the stop trigger switch are disposed on the first moving route, and the vehicle shortage trigger switch, the stop trigger switch and the first counting trigger switch are arranged sequentially along the moving direction of the vehicle body; Before controlling the first encoder to start counting and acquiring the first count value of the first encoder in real time, the method further includes: The fourth state signal of the vehicle shortage trigger switch is acquired in real time; the fourth state signal includes a vehicle shortage trigger signal; wherein, the vehicle shortage trigger signal is the signal acquired when the vehicle body moves to the vehicle shortage trigger switch; Upon receiving the under-vehicle trigger signal, determine whether the waiting trigger signal has already been received; If so, the vehicle body is controlled to continue moving to the preset position.

[0009] Optionally, the synchronous control method for automobile assembly further includes: If the waiting trigger signal is not obtained when the vehicle is in short supply trigger signal is obtained, the vehicle will be controlled to stop moving when it moves to the stop trigger switch until the waiting trigger signal is obtained.

[0010] Optionally, the vehicle assembly system further includes a reset trigger switch; the reset trigger switch is disposed on the first moving path, and the reset trigger switch and the first counting trigger switch are arranged sequentially along the moving direction of the vehicle body; Before acquiring the first trigger signal of the first counting trigger switch in real time, the method further includes: The fifth state signal of the reset trigger switch is acquired in real time; the fifth state signal includes a reset trigger signal; wherein the reset trigger signal is the signal acquired when the vehicle moves to the reset trigger switch; When the reset trigger signal is received, the first count value of the first encoder is cleared to zero.

[0011] In a second aspect, the present invention provides an automobile assembly system, comprising: a vehicle body carrier, a mounting device, a first encoder, a second encoder, a first counting trigger switch, a second counting trigger switch, and a controller; The vehicle body moves along a first moving route; the mounting device moves along a second moving route; the first moving route and the second moving route are parallel. The first counting trigger switch is located on the first moving route; The second counting trigger switch is located on the second movement path; The controller is used to execute any of the synchronization control methods described above.

[0012] Optionally, the vehicle assembly system further includes: a wait-to-trigger switch; The waiting trigger switch is located on the second moving route, and the second counting trigger switch and the waiting trigger switch are arranged sequentially along the moving direction of the mounted device.

[0013] Optionally, the vehicle assembly system further includes: a vehicle under-vehicle trigger switch and a stop-start trigger switch; The under-vehicle trigger switch and the stop trigger switch are located on the first moving route, and the under-vehicle trigger switch, the stop trigger switch and the first counting trigger switch are arranged sequentially along the moving direction of the vehicle body.

[0014] Optionally, the vehicle assembly system further includes: a reset trigger switch; The reset trigger switch is disposed on the first moving path, and the reset trigger switch and the first counting trigger switch are arranged sequentially along the moving direction of the mounted device.

[0015] The technical solution of this invention acquires the first state signal of the first counting trigger switch in real time, and controls the first encoder to start counting when the first trigger signal of the first state signal is acquired. Simultaneously, it acquires the second state signal of the second counting trigger switch in real time, and controls the second encoder to start counting when the second trigger signal of the second state signal is acquired. This allows the first encoder to count the displacement of the vehicle body and the second encoder to count the displacement of the mounting device. Based on the first count value of the first encoder and the second count value of the second encoder, real-time speed calculation compensation is performed on the vehicle body and the mounting device to control the synchronization of the vehicle body and the mounting device. In this way, contactless synchronization of the vehicle body and the mounting device is achieved without the need for mechanical structures, thus eliminating the need to manufacture mechanical synchronization connectors, avoiding the maintenance of mechanical synchronization connectors, reducing the debugging time of the automobile assembly system, improving the efficiency of automobile assembly, and reducing the cost of automobile assembly.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A flowchart illustrating a synchronous control method for automobile assembly provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of an automobile assembly system provided in Embodiment 1 of the present invention; Figure 3 This is a flowchart of a synchronous control method for automobiles provided in Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the structure of an automotive mounting system provided in Embodiment 2 of the present invention; Figure 5 A flowchart of a synchronous control method for automobiles provided in Embodiment 3 of the present invention; Figure 6 This is a structural schematic diagram of an automobile assembly system provided in Embodiment 3 of the present invention. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first," "second," "target," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] Example 1 Figure 1 This is a flowchart of a synchronous control method for automobile assembly provided in Embodiment 1 of the present invention. Figure 2 This is a schematic diagram of a car assembly system according to Embodiment 1 of the present invention. This embodiment provides a synchronous control method for car assembly, executed by the car assembly system, such as... Figure 1 As shown, the automobile assembly system includes a vehicle body carrier 10, a mounting device 20, a first encoder 11, a second encoder 21, a first counting trigger switch 12, and a second counting trigger switch 22. The vehicle body carrier 10 moves along a first moving path A; the mounting device 20 moves along a second moving path B; the first moving path A and the second moving path B are parallel; the first counting trigger switch 12 is disposed on the first moving path A; the second counting trigger switch 22 is disposed on the second moving path B. Figure 2 As shown, the control method includes: S110, Real-time acquisition of the first state signal of the first counting trigger switch.

[0022] The first state signal includes a first trigger signal; the first trigger signal is the signal obtained when the vehicle body 10 moves to the first counting trigger switch 12.

[0023] The vehicle body carrier 10 carries the chassis to be assembled, and the mounting device 20 carries components such as the rear axle and engine. The vehicle body carrier 10 moves along a first moving path A, and the mounting device 20 moves along a second moving path B. The first moving path A and the second moving path B are parallel, so that when the vehicle body carrier 10 and the mounting device 20 move synchronously, they can remain relatively stationary. At this time, the components carried by the mounting device 20 can be installed onto the chassis to be assembled. The first counting trigger switch 12 and the second counting trigger switch 22 can be, but are not limited to, limit switches. When the vehicle body carrier 10 moves along the first moving path A to the first counting trigger switch 12, the first counting trigger switch 12 is turned on, causing the first encoder 11 to start counting; similarly, when the mounting device 20 moves along the second moving path B to the second counting trigger switch 22, the second counting trigger switch 22 is turned on, and the second encoder 21 starts counting. In an exemplary embodiment, the first counting switch is located at the fixed position of the front axle of the chassis.

[0024] S120. Upon receiving the first trigger signal, control the first encoder to start counting and acquire the first count value of the first encoder in real time.

[0025] The first encoder 11 can record and control the motion technical indicators of the vehicle body 10, such as speed and distance, through the first count value.

[0026] Specifically, when the vehicle body 10 moves along the first moving route A to the first counting trigger switch 12, the first counting trigger switch 12 is turned on, and the controller can obtain the first trigger signal of the first counting trigger switch 12. At this time, the controller controls the first encoder 11 to start counting and obtains the first count value of the first encoder 11 in real time.

[0027] S130, Real-time acquisition of the second state signal of the second counting trigger switch.

[0028] The second state signal includes a second trigger signal. The second trigger signal is the signal obtained when the mounting device 20 moves to the second counting trigger switch 22.

[0029] S140. When the second trigger signal is received, control the second encoder to start counting and obtain the second count value of the second encoder in real time.

[0030] The second encoder 21 can record and control the motion counting indicators of the mounted device 20, such as speed and distance, through the second count value.

[0031] Specifically, when the mounting device 20 moves along the second moving route B to the second counting trigger switch 22, the second counting trigger switch 22 is turned on, and the controller can obtain the second trigger signal of the second counting trigger switch 22. At this time, the controller controls the second encoder 21 to start counting and obtains the second count value of the second encoder 21 in real time.

[0032] S150. Based on the first count value and the second count value, control the vehicle body and the mounting device to synchronize.

[0033] The synchronization of the vehicle body 10 and the mounting device 20 can be achieved by the vehicle body 10 moving at the same speed along the first moving route A and the mounting device 20 moving at the same speed along the second moving route B, and the vehicle body 10 and the mounting device 20 coinciding in a direction perpendicular to the first moving route A. Based on a first count value and a second count value, the synchronization of the vehicle body 10 and the mounting device 20 can be controlled as follows: when the first count value is greater than the second count value, the mounting device 20 is controlled to accelerate to catch up and / or the vehicle body 10 decelerates to wait; when the first count value is less than the second count value, the mounting device 20 is controlled to decelerate to wait and / or the vehicle body 10 accelerates to catch up.

[0034] Specifically, after the first encoder 11 starts counting, it acquires the first count value in real time. After the second encoder 21 starts counting, it acquires the second count value in real time. Based on the first and second count values ​​acquired in real time, the vehicle body 10 and the mounting device 20 are synchronized.

[0035] In this embodiment, by acquiring the first state signal of the first counting trigger switch in real time, the first encoder is controlled to start counting when the first trigger signal of the first state signal is acquired. Simultaneously, the second state signal of the second counting trigger switch is acquired in real time, and the second encoder is controlled to start counting when the second trigger signal of the second state signal is acquired. This allows the first encoder to count the displacement of the vehicle body and the second encoder to count the displacement of the mounting device. Based on the first count value of the first encoder and the second count value of the second encoder, real-time speed calculation compensation is performed on the vehicle body and the mounting device to control the synchronization of the vehicle body and the mounting device. In this way, contactless synchronization of the vehicle body and the mounting device is achieved without the need for mechanical structures, thus eliminating the need to prepare mechanical synchronization connectors, avoiding the maintenance of mechanical synchronization connectors, reducing the debugging time of the automobile assembly system, improving the efficiency of automobile assembly, and reducing the cost of automobile assembly.

[0036] Example 2 Figure 3This is a flowchart of a synchronous control method for automobiles provided in Embodiment 2 of the present invention. Figure 4 This is a schematic diagram of a vehicle mounting system provided in Embodiment 2 of the present invention. Based on the above embodiments, this embodiment further adds steps on how to control the synchronization of the vehicle body and the mounting device according to a first count value and a second count value, and how to reset the first count value of the first encoder to zero, such as... Figure 3 As shown, the method specifically includes: S210. Real-time acquisition of the fifth state signal of the reset trigger switch.

[0037] In this embodiment, reference Figure 4 As shown, the automobile assembly system also includes a reset trigger switch 13; the reset trigger switch 13 is disposed on the first moving path, and the reset trigger switch 13 and the first counting trigger switch 12 are arranged sequentially along the moving direction of the vehicle body carrier 10, that is, in the moving direction of the vehicle body carrier 10, the reset trigger switch 13 is disposed before the first counting trigger switch 12, so that the first encoder 11 clears the count of the previous cycle before starting to count.

[0038] The reset trigger switch 13 may be, but is not limited to, a limit switch. When the vehicle body 10 moves along the first moving route A to the reset trigger switch 13, the reset trigger switch 13 is turned on and sends a reset trigger signal, causing the first encoder 11 to reset. At this time, the first count value of the first encoder 11 is cleared to zero.

[0039] The fifth state signal includes a reset trigger signal; the reset trigger signal is the signal obtained when the vehicle body 10 moves to the reset trigger switch 13.

[0040] S220. When a reset trigger signal is received, the first count value of the first encoder is cleared to zero.

[0041] Specifically, the reset trigger switch 13 is set on the first moving path, and the reset trigger switch 13 and the first counting trigger switch 12 are arranged sequentially along the first moving route A, so that when the vehicle body 10 moves to the reset trigger switch 13, the reset trigger switch 13 is turned on and sends a reset trigger signal, so that when the reset trigger signal is received, the first count value of the first encoder 11 is cleared to zero, so as to clear the count of the previous cycle before the current cycle starts counting.

[0042] S230, Real-time acquisition of the first state signal of the first counting trigger switch.

[0043] The first state signal includes a first trigger signal; the first trigger signal is the signal obtained when the vehicle body 10 moves to the first counting trigger switch 12.

[0044] S240. Upon receiving the first trigger signal, control the first encoder to start counting and acquire the first count value of the first encoder in real time.

[0045] S250: Real-time acquisition of the second state signal of the second counting trigger switch.

[0046] The second state signal includes a second trigger signal. The second trigger signal is the signal obtained when the mounting device 20 moves to the second counting trigger switch 22.

[0047] S260. When the second trigger signal is received, control the second encoder to start counting and obtain the second count value of the second encoder in real time.

[0048] S270. Determine whether the difference between the first count value and the second count value is within the set range; if yes, execute S280; if no, execute S290.

[0049] The set range can be the combined error range of the first encoder 11 and the second encoder 21. For example, the set range can be 0.

[0050] S280, Ensure synchronization between the vehicle body and the mounted equipment.

[0051] S290: Based on the first count value and the second count value, control the moving speed of the mounting device, and return to execute S270.

[0052] In an exemplary embodiment, the movement speed of the mounting device 20 can be controlled according to the first count value and the second count value as follows: when the difference between the first count value and the second count value is greater than the maximum value of a set range, the mounting device 20 is controlled to accelerate to catch up or the vehicle 10 is controlled to decelerate and wait; when the difference between the first count value and the second count value is less than the minimum value of a set range, the mounting device 20 is controlled to decelerate and wait and / or the vehicle 10 is controlled to accelerate to catch up.

[0053] Specifically, after the first encoder 11 starts counting, it acquires the first count value in real time. After the second encoder 21 starts counting, it acquires the second count value in real time. This allows it to determine whether the difference between the first count value and the second count value is within a set range. If the difference between the first count value and the second count value is within the set range, it indicates that the vehicle body 10 and the mounting device 20 are synchronized. If the difference between the first count value and the second count value is not within the set range, the moving speed of the mounting device 20 is controlled according to the first count value and the second count value. The system then returns to determine whether the difference between the first count value and the second count value is within the set range, until the difference between the first count value and the second count value is within the set range, i.e., the vehicle body 10 and the mounting device 20 are synchronized.

[0054] In an alternative embodiment, continue to refer to Figure 4 As shown, the vehicle mounting synchronization device also includes a delay trigger switch 16, which is disposed on the first moving route, and the first counting switch 11 and the delay trigger switch 16 are arranged sequentially along the moving direction of the vehicle body 20. The vehicle mounting synchronization control method further includes: after controlling the vehicle body 10 and the mounting device 20 to synchronize according to the first count value and the second count value, it further includes: if the mounting is not completed when the vehicle body 20 moves to the delay trigger switch 16, then controlling the vehicle body 10 and the mounting device 20 to stop moving until the mounting is completed.

[0055] In this embodiment, by setting the reset trigger switch on the first moving path, and arranging the reset trigger switch and the first counting trigger switch sequentially along the first moving path, when the vehicle moves to the reset trigger switch, the reset trigger switch is turned on and a reset trigger signal is issued. Upon receiving the reset trigger signal, the first count value of the first encoder is cleared to zero, thus clearing the count of the previous cycle before the current cycle begins counting. Furthermore, after acquiring the first and second count values ​​in real time, it is determined whether the difference between the first and second count values ​​is within a set range. If the difference between the first and second count values ​​is not within the set range, the moving speed of the mounting device and / or the vehicle is controlled, and the process returns to the step of determining whether the first and second count values ​​are within the set range. This ensures that the difference between the first and second count values ​​is within the set range, i.e., the vehicle and the mounting device are synchronized, thereby improving the efficiency and accuracy of synchronizing the vehicle and the mounting device.

[0056] Example 3 Figure 5 This is a flowchart of a synchronous control method for automobiles provided in Embodiment 3 of the present invention. Figure 6 This is a schematic diagram of a car assembly system provided in Embodiment 3 of the present invention. Based on the above embodiments, this embodiment further adds a step of controlling the vehicle body and the mounting device to wait for each other. For example... Figure 5 As shown, the method includes: S310: Real-time acquisition of the fourth state signal of the under-vehicle trigger switch.

[0057] In this embodiment, as Figure 6 As shown, the automobile assembly system also includes a vehicle shortage trigger switch 14 and a stop trigger switch 15. The vehicle shortage trigger switch 14 and the stop trigger switch 15 are set on the first moving route A, and the vehicle shortage trigger switch 14, the stop trigger switch 15 and the first counting trigger switch 12 are arranged in sequence along the moving direction of the vehicle body carrier 10. That is, in the moving direction of the vehicle body carrier 10, the vehicle shortage trigger switch 14 is located before the stop trigger switch 15, and the stop trigger switch 15 is located before the first counting trigger switch 12.

[0058] The under-vehicle trigger switch 14 may be, but is not limited to, a limit switch. When the vehicle body 10 moves along the first moving route A to the under-vehicle trigger switch 14, the under-vehicle trigger switch 14 is turned on and sends an under-vehicle trigger signal.

[0059] The fourth state signal includes a vehicle shortage trigger signal, which is the signal obtained when the vehicle body 10 moves to the vehicle shortage trigger switch 14.

[0060] S320. When a vehicle shortage trigger signal is obtained, determine whether a waiting trigger signal has been obtained; if yes, execute S330; if no, execute S340.

[0061] S330, control the vehicle to continue moving to the preset position.

[0062] The preset position is the position of the vehicle body 10 when the mounting device 20 starts moving, which is set according to different vehicle models. For example, the preset position can be the synchronization start position, that is, when the vehicle body 10 moves to the synchronization start position, the mounting device 20 starts moving, and the vehicle body 10 and the mounting device 20 start synchronizing.

[0063] S340. When the vehicle moves to the stop trigger switch, control the vehicle to stop moving until a waiting trigger signal is obtained.

[0064] Specifically, when the vehicle body 10 moves along the first moving route A to the under-vehicle trigger switch 14, the under-vehicle trigger switch 14 is turned on and sends an under-vehicle trigger signal. When the under-vehicle trigger signal is received, it is determined whether a waiting trigger signal has been received. If a waiting trigger signal has been received at this time, it indicates that the mounting device 20 has stopped waiting, and the vehicle body 10 is controlled to continue moving to the preset position. Conversely, if a waiting trigger signal has not been received at this time, it indicates that the mounting device 20 has not yet arrived. When the vehicle body 10 moves to the stop trigger switch 15, the vehicle body 10 is controlled to stop moving to wait for the mounting device 20 to arrive. The vehicle body 10 continues to move until a waiting trigger signal is received, that is, when the mounting device 20 arrives.

[0065] S350: Real-time acquisition of the first state signal of the first counting trigger switch.

[0066] The first state signal includes a first trigger signal; the first trigger signal is the signal obtained when the vehicle body 10 moves to the first counting trigger switch 12.

[0067] S360. Upon receiving the first trigger signal, control the first encoder to start counting and acquire the first count value of the first encoder in real time.

[0068] S370, Real-time acquisition of the second state signal of the second counter trigger switch.

[0069] The second state signal includes a second trigger signal. The second trigger signal is the signal obtained when the mounting device 20 moves to the second counting trigger switch 22.

[0070] S380. When the second trigger signal is received, control the second encoder to start counting and obtain the second count value of the second encoder in real time.

[0071] S390: Real-time acquisition of the third state signal of the switch waiting to be triggered.

[0072] In this embodiment, we continue to refer to Figure 6 As shown, the vehicle assembly system also includes a waiting trigger switch 23; the waiting trigger switch 23 is disposed on the second moving route B, and the second counting trigger switch 22 and the waiting trigger switch 23 are arranged sequentially along the moving direction of the mounting device 20, that is, in the moving direction of the mounting device 20, the waiting trigger switch 23 is located before the second counting trigger switch 22.

[0073] The waiting trigger switch 23 may include, but is not limited to, a limit switch. When the mounting device 20 moves to the waiting trigger switch 23, the waiting trigger switch 23 is turned on and sends a waiting trigger signal.

[0074] The third state signal includes a waiting trigger signal, which is the signal obtained when the mounting device 20 moves to the waiting trigger switch 23.

[0075] S3100: When a waiting trigger signal is received, control the mounting device to stop moving until the vehicle body moves to the preset position, then execute S3110.

[0076] Specifically, the waiting trigger switch 23 is set on the second moving path, and the second counting trigger switch 22 and the waiting trigger switch 23 are arranged sequentially along the moving direction of the mounting device 20, so that when the mounting device 20 moves to the waiting trigger switch 23, the waiting trigger switch 23 is turned on and sends a waiting trigger signal, so that when the waiting trigger signal is received, the mounting device 20 is controlled to stop moving until the vehicle body 10 moves to the preset position, and then the vehicle body 10 continues to move, so as to control the vehicle body 10 and the mounting device 20 to be synchronized.

[0077] S3110. Based on the first count value and the second count value, control the vehicle body and the mounting device to synchronize.

[0078] In an alternative embodiment, continue to refer to Figure 6As shown, the vehicle assembly system also includes a third counting trigger switch 24 and a third encoder 25; the third counting trigger switch 24 is located on the second moving route B and is located after the second counting trigger switch 22; when the second trigger signal is obtained, the second encoder 21 is controlled to start counting, and the second count value of the second encoder 21 is obtained in real time. The synchronization control method further includes: obtaining the third trigger signal of the third counting trigger switch 24 in real time; wherein, the third trigger signal is the trigger signal of the third counting trigger switch 24 when the mounting device 20 moves to the third counting trigger switch 24; when the third trigger signal is obtained, the second encoder 21 is controlled to stop counting, and the third encoder 25 is controlled to start counting, and the third count value of the third encoder 25 is obtained in real time; according to the first count value and the second count value, the vehicle body carrier 10 and the mounting device 20 are synchronized, including: according to the first count value, the second count value and the third count value, the vehicle body carrier 10 and the mounting device 20 are synchronized. For example, when the difference between the first count value and the sum of the second and third count values ​​is within a set range, it is determined that the vehicle body 10 and the mounting device 20 are synchronized. If they are not synchronized, the mounting device 20 is controlled to accelerate to catch up and / or the vehicle body 10 decelerates and waits until the difference between the first count value and the sum of the second and third count values ​​is within the set range.

[0079] In this embodiment, the fourth state signal of the vehicle shortage trigger switch is acquired in real time. When the vehicle shortage trigger signal of the fourth state signal is acquired, it is determined whether a waiting trigger signal has been acquired. If a waiting trigger signal has been acquired, it indicates that the mounting device has stopped waiting, and the vehicle body is controlled to continue moving to the preset position. Conversely, if a waiting trigger signal has not been acquired, it indicates that the mounting device has not yet arrived. When the vehicle body moves to the stop trigger switch, the vehicle body is controlled to stop moving to wait for the mounting device to arrive. The vehicle body continues to move when a waiting trigger signal is acquired, i.e., when the mounting device arrives. In other words, by the vehicle body and the mounting device waiting for each other, the distance between the vehicle body and the mounting device is controlled, so that the vehicle body and the mounting device can be synchronized in a shorter time. This also prevents the vehicle body and / or the mounting synchronization device from accelerating too much when decelerating to wait or accelerating to catch up, which is not conducive to the stability of the movement process.

[0080] Example 4 This invention provides an automotive assembly system, with reference to... Figure 1As shown, the automobile assembly system includes a vehicle body carrier 10, a mounting device 20, a first encoder 11, a second encoder 21, a first counting trigger switch 12, a second counting trigger switch 22, and a controller (not shown in the figure). The vehicle body carrier 10 moves along a first moving route A; the mounting device 20 moves along a second moving route B; the first moving route A and the second moving route B are parallel; the first counting trigger switch 12 is disposed on the first moving route A; the second counting trigger switch 22 is disposed on the second moving route B; the controller is used to execute the synchronization control method provided in any of the above embodiments.

[0081] Since the automobile assembly system provided in this embodiment of the invention includes the vehicle body 10, the mounting device 20, the first encoder 11, the second encoder 21, the first counting trigger switch 12, the second counting trigger switch 22, the first encoder 11, the second encoder 21, and the controller, it can execute the synchronous control method for automobile assembly provided in this embodiment of the invention. Therefore, it can have the corresponding structure and features for executing the synchronous control method for automobile assembly provided in this embodiment of the invention, and can achieve the beneficial effects of the synchronous control method for automobile assembly provided in this embodiment of the invention. The similarities can be referred to the above description.

[0082] Optional, see reference Figure 4 As shown, the automobile assembly system also includes: a reset trigger switch 13; the reset trigger switch 13 is disposed on the first moving path, and the reset trigger switch 13 and the first counting trigger switch 12 are arranged sequentially along the moving direction of the mounting device 20.

[0083] Optional, see reference Figure 6 As shown, the automobile assembly system also includes a waiting trigger switch 23; the waiting trigger switch 23 is disposed on the second movement route B, and the second counting trigger switch 22 and the waiting trigger switch 23 are arranged sequentially along the movement direction of the mounting device 20.

[0084] Optional, continue to refer to Figure 6 As shown, the vehicle assembly system also includes a vehicle shortage trigger switch 14 and a stop trigger switch 15; the vehicle shortage trigger switch 14 and the stop trigger switch 15 are disposed on the first moving route A, and the vehicle shortage trigger switch 14, the stop trigger switch 15 and the first counting trigger switch are arranged sequentially along the moving direction of the vehicle body carrier 10.

[0085] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A synchronous control method for automobile assembly, executed by an automobile assembly system, characterized in that, The vehicle assembly system includes: a vehicle body carrier, a mounting device, a first encoder, a second encoder, a first counting trigger switch, and a second counting trigger switch; the vehicle body carrier moves along a first moving path; the mounting device moves along a second moving path; the first moving path and the second moving path are parallel; the first counting trigger switch is disposed on the first moving path; the second counting trigger switch is disposed on the second moving path; the synchronization control method includes: The first status signal of the first counting trigger switch is acquired in real time; the first status signal includes a first trigger signal; wherein, the first trigger signal is the signal acquired when the vehicle moves to the first counting trigger switch; Upon receiving the first trigger signal, control the first encoder to start counting and acquire the first count value of the first encoder in real time; The second status signal of the second counting trigger switch is acquired in real time; the second status signal includes a second trigger signal; wherein the second trigger signal is the signal acquired when the mounting device moves to the second counting trigger switch; Upon receiving the second trigger signal, control the second encoder to start counting, and acquire the second count value of the second encoder in real time; Based on the first count value and the second count value, control the vehicle body and the mounting device to synchronize; The vehicle assembly system also includes a waiting trigger switch; the waiting trigger switch is disposed on the second movement path, and the second counting trigger switch and the waiting trigger switch are arranged sequentially along the movement direction of the mounting device; After controlling the second encoder to start counting and acquiring the second count value of the second encoder in real time, the method further includes: The third state signal of the waiting trigger switch is acquired in real time; the third state signal includes a waiting trigger signal; wherein the waiting trigger signal is the signal acquired when the mounting device moves to the waiting trigger switch; Upon receiving the waiting trigger signal, the device is controlled to stop moving; Until the vehicle body moves to the preset position, the step of controlling the synchronization of the vehicle body and the mounting device according to the first count value and the second count value is executed; The vehicle assembly system also includes a vehicle shortage trigger switch and a stop trigger switch; the vehicle shortage trigger switch and the stop trigger switch are disposed on the first moving route, and the vehicle shortage trigger switch, the stop trigger switch and the first counting trigger switch are arranged sequentially along the moving direction of the vehicle body; Before controlling the first encoder to start counting and acquiring the first count value of the first encoder in real time, the method further includes: The fourth state signal of the vehicle shortage trigger switch is acquired in real time; the fourth state signal includes a vehicle shortage trigger signal; wherein, the vehicle shortage trigger signal is the signal acquired when the vehicle body moves to the vehicle shortage trigger switch; Upon receiving the under-vehicle trigger signal, determine whether the waiting trigger signal has already been received; If so, the vehicle body is controlled to continue moving to the preset position.

2. The synchronous control method for automobile assembly according to claim 1, characterized in that, Based on the first count value and the second count value, controlling the vehicle body and the mounting device to synchronize includes: Determine whether the difference between the first count value and the second count value is within a set range; If so, then the vehicle body and the mounting device are synchronized; If not, then based on the first count value and the second count value, control the moving speed of the mounting device and / or the vehicle body, and return to the step of determining whether the difference between the first count value and the second count value is within the set range.

3. The synchronous control method for automobile assembly according to claim 1, characterized in that, Also includes: If the waiting trigger signal is not obtained when the vehicle is in short supply trigger signal is obtained, the vehicle will be controlled to stop moving when it moves to the stop trigger switch until the waiting trigger signal is obtained.

4. The synchronous control method for automobile assembly according to claim 1, characterized in that, The vehicle assembly system also includes a reset trigger switch; the reset trigger switch is disposed on the first moving route, and the reset trigger switch and the first counting trigger switch are arranged sequentially along the moving direction of the vehicle body; Before acquiring the first trigger signal of the first counting trigger switch in real time, the method further includes: The fifth state signal of the reset trigger switch is acquired in real time; the fifth state signal includes a reset trigger signal; wherein the reset trigger signal is the signal acquired when the vehicle moves to the reset trigger switch; When the reset trigger signal is received, the first count value of the first encoder is cleared to zero.

5. An automobile assembly system, characterized in that, include: Vehicle body, mounting device, first encoder, second encoder, first counting trigger switch, second counting trigger switch and controller; The vehicle body moves along a first moving route; the mounting device moves along a second moving route; the first moving route and the second moving route are parallel. The first counting trigger switch is located on the first moving route; The second counting trigger switch is located on the second movement path; The controller is used to execute the synchronization control method according to any one of claims 1-4; It also includes: under-vehicle trigger switch and stop-start trigger switch; The under-vehicle trigger switch and the stop trigger switch are located on the first moving route, and the under-vehicle trigger switch, the stop trigger switch and the first counting trigger switch are arranged sequentially along the moving direction of the vehicle body.

6. The automobile assembly system according to claim 5, characterized in that, Also includes: a wait-to-trigger switch; The waiting trigger switch is located on the second moving route, and the second counting trigger switch and the waiting trigger switch are arranged sequentially along the moving direction of the mounted device.

7. The automobile assembly system according to claim 5, characterized in that, Also includes: Reset the trigger switch; The reset trigger switch is disposed on the first moving path, and the reset trigger switch and the first counting trigger switch are arranged sequentially along the moving direction of the mounted device.

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