An intelligent synchronization system

Abstract

The application discloses an intelligent synchronization system, comprising: an interior trim slide plate line, a line-side assembly device, a slide plate speed detection device and a synchronization controller; the line-side assembly device and the slide plate in the interior trim slide plate line cooperate to complete automobile part assembly; the slide plate speed detection device is fixedly assembled at the side of the interior trim slide plate line; the slide plate speed detection device comprises an angular velocity detector and a rolling wheel; the rolling wheel is pressed against the slide plate to be assembled; when the slide plate to be assembled advances, the rolling wheel is driven to rotate through friction force, and the linear motion state of the slide plate is converted into a circular motion state; the angular velocity detector indirectly obtains the actual speed of the slide plate to be assembled through the rolling wheel and transmits the actual speed to the synchronization controller; the synchronization controller is used for determining a first synchronization control speed according to the actual speed of the slide plate and the corresponding main motor driving speed of the slide plate to be assembled, and controlling the running speed of the line-side assembly device according to the first synchronization control speed, so that the line-side assembly device and the slide plate to be assembled keep speed synchronization.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile assembly, in particular to an intelligent synchronization system. BACKGROUND

[0002] In the automobile assembly workshop, the interior sliding plate line and the line side assembly equipment cooperate to assemble the interior of the vehicle body. The interior sliding plate line mainly relies on the friction wheel to drive the sliding plate forward, and the friction wheel is driven by the main drive motor. The line side assembly equipment is driven by a servo motor (also known as a synchronous motor).

[0003] When the line side assembly equipment is performing assembly work on the fixed white vehicle body on the interior sliding plate line, the speed of the line side assembly equipment and the speed of the interior sliding plate line need to be kept synchronous, so that the two are in a relative static state. If there is a speed difference between the two, the parts to be assembled will collide with the white vehicle body, thereby damaging the parts or the white vehicle body.

[0004] At present, the main synchronization method of the line side assembly equipment and the interior sliding plate line is motor synchronization. The servo motor controls the running speed of the line side assembly equipment by obtaining the driving speed of the main drive motor in real time, so as to realize the speed synchronization of the line side assembly equipment and the sliding plate on the interior sliding plate line.

[0005] However, in actual application, the sliding plate will have a sudden change in speed due to unexpected situations such as sudden stop, acceleration, and friction wheel slip. The actual speed of the sliding plate does not match the driving speed output by the main drive motor, which leads to the asynchronous speed of the line side assembly equipment and the interior sliding plate line, and causes assembly accidents.

[0006] Therefore, the existing technology has the problem of asynchronous speed of the line side assembly equipment and the interior sliding plate line caused by the sudden change in speed of the sliding plate. SUMMARY

[0007] The present application provides an intelligent synchronization system. By combining the interior sliding plate line, the line side assembly equipment, the sliding plate speed detection device, and the synchronization controller, accurate detection is implemented for sudden conditions such as slipping, sudden stop, and sudden acceleration when the sliding plate advances. When the above-mentioned sudden conditions occur, the speed of the line side assembly equipment is adjusted in time, so that the line side assembly equipment can always keep speed synchronization with the sliding plate when the above-mentioned sudden conditions occur, so as to solve or partially solve the technical problem of asynchronous speed of the line side assembly equipment and the interior sliding plate line caused by the sudden change in speed of the sliding plate.

[0008] To solve the above technical problem, the first aspect of the present application discloses an intelligent synchronization system, which comprises: an interior sliding plate line, a line side assembly equipment, a sliding plate speed detection device, and a synchronization controller.

[0009] The interior sliding plate line is loaded with a plurality of sliding plates; each sliding plate is fixedly assembled with a white vehicle body or is an empty sliding plate;

[0010] The line-side assembly device is arranged on the side of the interior trim slide line as needed, and is used to complete automobile part assembly with the slide to be assembled in the interior trim slide line;

[0011] The slide speed detection device is fixedly assembled on the side of the interior trim slide line and is arranged in pairs with the line-side assembly device;

[0012] The slide speed detection device comprises a rolling wheel carrying an angular velocity detector, the rolling wheel is pressed against the slide to be assembled, when the slide to be assembled advances, the rolling wheel is driven to rotate by friction, and the linear motion state of the slide is converted into a circular motion state; the angular velocity detector indirectly obtains the actual speed of the slide to be assembled by detecting the rolling wheel and transmits the actual speed to the synchronous controller;

[0013] The synchronous controller is used to determine a first synchronous control speed according to the actual speed of the slide and the corresponding main motor driving speed of the slide to be assembled, and control the running speed of the line-side assembly device according to the first synchronous control speed, so that the line-side assembly device and the slide to be assembled are kept synchronous in speed.

[0014] Optionally, the slide speed detection device further comprises:

[0015] A fixed bottom plate comprises a fixed portion and an extension portion; wherein the fixed portion is fixed on the side of the interior trim slide line;

[0016] A base plate, one end of the base plate is fixedly assembled with the fixed bottom plate, the other end of the base plate is assembled with the rolling wheel through a bearing assembly, and the rolling wheel and the angular velocity detector are respectively assembled at two ends of the bearing assembly;

[0017] A rolling wheel pressing mechanism is arranged through the middle segment of the base plate and connected with the extension portion of the fixed bottom plate, and is used to adjust the pressing force of the rolling wheel on the slide to be assembled.

[0018] Optionally, the synchronous controller is specifically used to:

[0019] Determine a speed difference coefficient K according to the actual speed of the slide and the main motor driving speed; wherein the speed difference coefficient is the ratio of the actual speed of the slide to the main motor driving speed;

[0020] Judge whether the speed difference coefficient K is 1;

[0021] When K = 1, it indicates that the slide to be assembled and the line-side assembly device are synchronous;

[0022] When K≠1, the actual speed of the slide plate is output to the PLC of the synchronous motor as the first synchronous control speed, the PLC controls the running speed of the synchronous motor according to the actual speed of the slide plate, and the speed synchronization control of the line-side assembly equipment and the slide plate to be assembled is realized; at the same time, abnormal information is generated and transmitted to the alarm system for sound and light alarm, prompting the on-line assembly personnel.

[0023] Optionally, the line-side assembly equipment is provided with a sensing device for contacting the body-in-white of the slide plate to be assembled after the line-side assembly equipment and the slide plate to be assembled are synchronized.

[0024] When the line-side assembly equipment and / or the body-in-white fluctuate in speed, the sensing device generates a compression change amount or a stretching change amount and transmits it to the synchronous controller.

[0025] The synchronous controller is also used to judge the compression change amount through a set compression interval, or judge the stretching change amount through a set stretching interval, and control the alarm system to sound and light alarm when the interval is exceeded.

[0026] Optionally, the system further comprises:

[0027] A transmission chain arranged on the interior trim slide plate line;

[0028] A slide plate variable speed driving device fixedly assembled on the side of the interior trim slide plate line and arranged in pairs with the line-side assembly equipment, used for adjusting the change speed of the slide plate to be assembled, so that the slide plate to be assembled and the line-side assembly equipment are synchronized in speed.

[0029] Optionally, the slide plate variable speed driving device comprises a thrust mechanism, a variable speed gear disc and a friction wheel.

[0030] The thrust mechanism drives the variable speed gear disc to rotate under the driving action of the main driving motor.

[0031] The variable speed gear disc is fixedly connected to the friction wheel through a gear disc output shaft, and the friction wheel presses the slide plate to be assembled; wherein the variable speed gear disc is provided with multiple gears with different diameters and selectively engages with the transmission chain.

[0032] When the slide plate to be assembled needs to change speed, the main driving motor drives the thrust mechanism and pushes the variable speed gear disc to rotate, so that the gears with different diameters on the variable speed gear disc engage with the transmission chain to generate different rotating speeds, and the gear disc output shaft outputs different rotating speeds to the friction wheel, the friction wheel rotates at different rotating speeds following the variable speed gear disc, and transmits to the slide plate to be assembled through friction transmission, thereby realizing the speed change of the slide plate to be assembled.

[0033] Optionally, the sliding plate variable speed driving device further comprises:

[0034] a driving telescopic rod, assembled between the thrust mechanism and the main driving motor, for transmitting driving force of the main driving motor;

[0035] a first balancing assembly, assembled inside the thrust mechanism, for balancing telescopic amount of the driving telescopic rod;

[0036] a limiting base, assembled between the variable speed gear disc and the friction wheel, for limiting the variable speed gear disc;

[0037] a second balancing assembly, assembled inside the limiting base, for balancing operation of the variable speed gear disc.

[0038] Optionally, the system further comprises:

[0039] a pressing mechanism servo motor;

[0040] a chain pressing mechanism in the variable speed gear disc, for pressing the transmission chain after gear engagement in the transmission chain and the variable speed gear disc is unchanged, and adaptively adjusting pressing force by driving a pressing telescopic rod through the pressing mechanism servo motor.

[0041] Optionally, the synchronization controller is further configured to: determine a second synchronization control speed according to the actual speed of the sliding plate and the driving speed of the main motor, and control the sliding plate variable speed driving device according to the second synchronization control speed to change the speed of the sliding plate to be assembled, so that the sliding plate to be assembled and the line side assembling device keep speed synchronization; wherein the second synchronization control speed is the driving speed of the main motor.

[0042] Optionally, the system further comprises: a light detection device, arranged at the side of the interior sliding plate line, for detecting distance difference between two sliding plates;

[0043] The synchronization controller is further configured to: adjust the speed of the sliding plate to be adjusted in combination with total cumulative distance of the first N sliding plates of the sliding plate to be adjusted, and single cumulative distance of the sliding plate to be adjusted and the previous sliding plate, so that the sliding plate to be adjusted catches up in place;

[0044] The speed adjustment range of the sliding plate to be adjusted is V∈[V1, V2], wherein V represents the adjustment speed of the sliding plate to be adjusted; V1 represents the speed when catching up in place according to the single cumulative distance; V2 represents the speed when catching up in place according to the total cumulative distance; ΔL1 represents the single cumulative distance; a represents the acceleration; t1 represents the limiting time when catching up in place according to the single cumulative distance; t2 represents the limiting time when catching up in place according to the total cumulative distance, which is set by the system; ΔL2 represents the total cumulative distance, i represents the sliding plate, i = 1 represents the front sliding plate of the sliding plate to be speed-adjusted, L i represents the distance of the front i-th sliding plate of the sliding plate to be speed-adjusted, L i+1 represents the distance of the front i+1-th sliding plate of the sliding plate to be speed-adjusted, L i+1 -L i represents the distance difference between the i+1-th sliding plate and the i-th sliding plate, V i represents the initial speed of the i+1-th sliding plate, t i represents the limit time of the i+1-th sliding plate.

[0045] The present application has the following beneficial effects or advantages through one or more technical solutions:

[0046] The application discloses an intelligent synchronization system, comprising: an interior trim sliding plate line, a line-side assembly device, a sliding plate speed detection device, and a synchronization controller. The sliding plate speed detection device is assembled on the line-side side of the interior trim sliding plate line, contacts the sliding plate and directly detects the running state of the sliding plate, and can accurately detect sudden conditions such as skidding, sudden stopping and sudden acceleration when the sliding plate advances. The synchronization controller timely adjusts the speed of the line-side assembly device when the sliding plate appears the above-mentioned sudden conditions, so that the line-side assembly device can always keep speed synchronization with the sliding plate when the above-mentioned sudden conditions appear, thereby preventing the occurrence of assembly accidents.

[0047] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0048] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments, and are not meant to limit the present application. Moreover, the same reference numerals in the several figures represent similar parts throughout the figures.

[0049] In the drawings:

[0050] Figure 1 Fig. 1 shows a structural schematic diagram of an intelligent synchronization system according to an embodiment of the present application;

[0051] Figure 2 Fig. 2 shows a structural schematic diagram of a sliding plate speed detection device according to an embodiment of the present application;

[0052] Figure 3Fig. 1 shows a structural schematic diagram of a sliding plate variable speed driving device according to an embodiment of the present application.

[0053] Reference signs: interior sliding plate line 11, line edge assembly device 12, sliding plate speed detection device 13, synchronous controller 14, rotary table 15, transmission chain 16, sliding plate variable speed driving device 17, fixed bottom plate 131, base plate 132, rolling wheel pressing mechanism 133, angular velocity detector 134, rolling wheel 135, main driving motor 171, driving telescopic rod 172, thrust mechanism 173, first balance assembly 174, variable speed gear disc 175, second balance assembly 176, limiting base 177, gear disc output shaft 178, friction wheel 179, chain pressing mechanism 1751, pressing mechanism servo motor 1752, pressing telescopic rod 1753. DETAILED DESCRIPTION

[0054] Exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0055] The embodiment of the present application discloses an intelligent synchronization system, which is mainly applied to an interior assembly production line. When the sliding plate suddenly changes in speed due to emergency stop, acceleration, friction wheel slip and other unexpected situations, the system can always keep the speed of the line edge assembly device and the interior sliding plate line synchronized, thereby preventing assembly accidents.

[0056] Reference Figure 1 Fig. 1 shows a structural schematic diagram of an intelligent synchronization system according to an embodiment of the present application, which includes: an interior sliding plate line 11, a line edge assembly device 12, a sliding plate speed detection device 13, and a synchronous controller 14.

[0057] To clearly describe the automobile intelligent synchronization system of the present application, the present application is described by taking the content shown in Figure 1 as an embodiment.

[0058] In the interior sliding plate line 11, a plurality of sliding plates are loaded; each sliding plate is fixedly assembled with a body-in-white, or is an empty sliding plate. Exemplarily, the interior sliding plate line 11 can be provided as two parallel assembly production lines, and the two assembly production lines are connected by the rotary table 15, but this does not form a limitation.

[0059] The line-side assembly device 12 is arranged on the side of the interior trim panel line 11 as needed, and is used to cooperate with the to-be-assembled panel in the interior trim panel line 11 to complete the assembly of automobile parts. For example, two sets of line-side assembly devices 12 are arranged according to the number of to-be-assembled bodies, and the two sets of line-side assembly devices 12 are arranged on the two sides of the interior trim panel line 11. Each set of line-side assembly device 12 is used to assemble the body in the respective to-be-assembled panel, so as to improve the assembly efficiency.

[0060] The panel speed detection device 13 is fixedly arranged on the side of the interior trim panel line 11 and is arranged in pairs with the line-side assembly device 12. The pairing relationship between the panel speed detection device 13 and the line-side assembly device 12 is one-to-one or one-to-many. In actual application, the line-side assembly device 12 has low-precision assembly requirements and high-precision assembly requirements. If the line-side assembly device 12 has low-precision assembly requirements, the panel speed detection device 13 is selectively arranged. If the line-side assembly device 12 has high-precision assembly requirements, the panel speed detection device 13 must be arranged, which is used to accurately detect sudden conditions such as skidding, sudden stopping, and sudden acceleration when the panel advances, and lays a foundation for high-precision assembly of the line-side assembly device 12.

[0061] Specifically, the panel speed detection device 13 includes a rolling wheel 135 carrying an angular velocity detector 134. The rolling wheel is used to press the to-be-assembled panel. When the to-be-assembled panel advances, the rolling wheel is driven to rotate by friction, and the linear motion state of the panel is converted into a circular motion state; the angular velocity detector indirectly obtains the actual speed of the to-be-assembled panel by detecting the rolling wheel, and transmits the actual speed to the synchronous controller 14.

[0062] In order to clearly describe the structure of the panel speed detection device 13 of the present application, the present application is described with reference to the structure shown in Figure 2 Specifically, the panel speed detection device 13 includes a fixed base plate 131, a base plate 132, a rolling wheel pressing mechanism 133, and a rolling wheel 135 carrying an angular velocity detector 134.

[0063] The fixed base plate 131 includes a fixed portion and an extension portion, and the extension portion is perpendicular to the fixed portion. The fixed portion is fixed on the side of the interior trim panel line 11. For example, a through hole is drilled in the fixed portion, and the fixed portion is fixed on the side of the interior trim panel line 11 by screw cooperation. The extension portion is two connecting plates with the same structure, which are perpendicular to the fixed portion and cannot be detached, and in addition to fixing the base plate 132, the two connecting plates also have the function of receiving the rolling wheel pressing mechanism 133.

[0064] The substrate 132 is fixedly assembled at one end with the fixed base plate 131 and at the other end with the bearing assembly, and the rolling wheel 135 and the angular velocity detector 134 are respectively assembled at two ends of the bearing assembly. For example, the substrate 132 is fixedly connected by a hollow cylinder and a bearing panel. One end of the hollow cylinder is fixedly assembled between the two connecting plates in a threaded manner. The bearing panel is assembled with the bearing assembly, and the rolling wheel and the angular velocity detector 134 are respectively assembled at two ends of the bearing assembly. When the sliding plate advances, it contacts the rolling wheel. Since the rolling wheel is pressed on the sliding plate to be assembled, the sliding plate advances by friction to drive the rolling wheel 135 to rotate, converting the linear motion of the sliding plate into circular motion.

[0065] The rolling wheel pressing mechanism 133 is arranged through the middle segment of the substrate 132 and connected with the extension of the fixed base plate 131, and is used for adjusting the pressing force of the rolling wheel on the sliding plate to be assembled. For example, the connecting piece of the rolling wheel pressing mechanism 133 is arranged vertically through the other end of the hollow cylinder and connected to the extension. The connecting piece is sleeved with a spring, and the pressing force of the rolling wheel on the sliding plate to be assembled is adjusted in cooperation with the nut.

[0066] In addition, a gasket is additionally arranged at the contact position of the bearing, the nut and the spring, so as to reduce the wear. In actual application, the gasket can be selectively used.

[0067] In order to increase the friction, a rough surface or an additional friction-increasing accessory is arranged at the contact position of the sliding plate to be assembled and the rolling wheel 135. For example, a steel plate is arranged on the sliding plate to be assembled, so as to increase the friction with the rolling wheel 135.

[0068] In actual assembly, the sliding plates on the interior sliding plate line 11 advance in sequence. When the sliding plate to be assembled advances and contacts the rolling wheel 135, the rolling wheel 135 is pressed on the sliding plate to be assembled. When the sliding plate to be assembled continues to advance, the rolling wheel 135 is driven to rotate by friction. At this time, if the sliding plate to be assembled suddenly slips, stops or accelerates, the rolling wheel 135 will directly reflect the sudden condition, and the actual speed of the sliding plate in the sudden condition of slipping, stopping or accelerating is accurately detected by the angular velocity detector 134 and fed back to the synchronous controller 14.

[0069] The synchronous controller 14 is used for determining a first synchronous control speed according to the actual speed of the sliding plate and the corresponding main motor driving speed of the sliding plate to be assembled, and controlling the running speed of the line-side assembly equipment 12 according to the first synchronous control speed, so that the line-side assembly equipment 12 and the sliding plate to be assembled are kept speed-synchronous.

[0070] Specifically, the synchronization controller 14 is configured to determine a speed difference coefficient K according to the actual speed of the slide plate and the driving speed of the main motor; wherein the speed difference coefficient is a ratio of the actual speed of the slide plate to the driving speed of the main motor. It is determined whether the speed difference coefficient K is 1. When K = 1, the actual speed of the slide plate is the same as the driving speed of the main motor. Since the running speed of the synchronous motor of the line-side assembly device 12 is the same as the driving speed of the main motor, K = 1 indicates that the slide plate to be assembled and the line-side assembly device 12 are synchronized, and no adjustment is needed.

[0071] When K ≠ 1, the actual speed of the slide plate is different from the driving speed of the main motor. For example, when K < 1, it indicates that the actual speed of the slide plate is less than the driving speed of the main motor, and the slide plate has a slip abnormality or an emergency stop abnormality; when K > 1, it indicates that the actual speed of the slide plate is greater than the driving speed of the main motor, and the slide plate has an emergency acceleration abnormality. Therefore, when K ≠ 1, it indicates that the slide plate has an emergency condition, and the actual speed of the slide plate is output to the PLC of the synchronous motor as a first synchronization control speed, and the PLC controls the running speed of the synchronous motor according to the actual speed of the slide plate, so as to realize the synchronization of the line-side assembly device 12 and the actual speed of the slide plate.

[0072] In an alternative embodiment, the synchronization controller 14 is further configured to determine a speed difference K' according to the actual speed of the slide plate and the driving speed of the main motor; wherein K' represents the difference between the actual speed of the slide plate and the driving speed of the main motor. When K' = 0, the actual speed of the slide plate is the same as the driving speed of the main motor, and no adjustment is needed. When K' ≠ 0, the actual speed of the slide plate is different from the driving speed of the main motor. For example, when K' < 0, it indicates that the actual speed of the slide plate is less than the driving speed of the main motor, and the slide plate has a slip abnormality or an emergency stop abnormality; when K' > 0, it indicates that the actual speed of the slide plate is greater than the driving speed of the main motor, and the slide plate has an emergency acceleration abnormality. Therefore, when K' ≠ 0, it indicates that the slide plate has an emergency condition, and the actual speed of the slide plate is output to the PLC of the synchronous motor as a first synchronization control speed, and the PLC controls the running speed of the synchronous motor according to the actual speed of the slide plate, so as to realize the speed synchronization control of the line-side assembly device 12 and the slide plate to be assembled.

[0073] In the present application, through the cooperation of the slide plate speed detection device 13 and the synchronization controller 14, the actual speed of the slide plate to be assembled can be accurately detected when the slide plate to be assembled has a slip, an emergency stop, an emergency acceleration or other emergency conditions, and the speed synchronization of the line-side assembly device 12 and the slide plate to be assembled can be maintained when the slide plate to be assembled has the above-mentioned emergency conditions, thereby preventing the occurrence of assembly accidents.

[0074] In an alternative embodiment, the synchronization controller 14 generates abnormal information and transmits the abnormal information to an alarm system for sound and light alarm while controlling the line-side assembly device 12 to keep the speed synchronization with the slide plate to be assembled, so as to prompt the line assembly personnel. The alarm system includes on-site alarm and remote alarm, and both of them perform sound and light alarm according to the abnormal information.

[0075] In order to strengthen the accurate detection of the sudden situation of the to-be-assembled slide plate, the in-line assembly equipment 12 is also provided with a sensing device, such as a pressure sensor. Through the cooperation of the sensing device, the synchronous controller 14 and the alarm system, the accurate detection of the sudden situation of the to-be-assembled slide plate is realized.

[0076] The sensing device is used to contact the body-in-white of the to-be-assembled slide plate after the in-line assembly equipment 12 and the to-be-assembled slide plate are synchronized. When the in-line assembly equipment 12 and / or the body-in-white speed fluctuates, the sensing device will generate a compression change amount or a stretching change amount and transmit it to the synchronous controller 14. For example, when the to-be-assembled slide plate generates a sudden situation such as skidding, sudden stop, sudden acceleration, etc., the body-in-white fixed on the to-be-assembled slide plate will also generate speed fluctuation. For example, the to-be-assembled slide plate suddenly stops driving the body-in-white to suddenly stop, and the pressure sensor will detect the compression change amount generated by the sudden stop of the body-in-white. For another example, the to-be-assembled slide plate suddenly accelerates driving the body-in-white to suddenly accelerate, and the pressure sensor will detect the stretching change amount generated by the sudden acceleration of the body-in-white.

[0077] The synchronous controller 14 is also used to judge the compression change amount through a set compression interval, or judge the stretching change amount through a set stretching interval, and control the alarm system to sound and light alarm when the interval is exceeded.

[0078] In addition to adjusting the speed of the in-line assembly equipment 12 to keep the speed of the to-be-assembled slide plate synchronized, in the following embodiments, the speed of the to-be-assembled slide plate itself can also be changed to compensate for the sudden change in speed caused by the sudden situation.

[0079] In order to change the speed of the to-be-assembled slide plate, a transmission chain 16 is arranged on the interior slide plate line 11, and all slide plates use the same transmission chain 16 to change the movement speed. In addition, a slide plate variable speed driving device 17 is also added, which is fixedly assembled on the side of the interior slide plate line 11 and is arranged in pairs with the in-line assembly equipment 12, and is used to adjust the change speed of the to-be-assembled slide plate, so that the speed of the to-be-assembled slide plate and the in-line assembly equipment 12 is synchronized. The pairing relationship between the slide plate variable speed driving device 17 and the in-line assembly equipment 12 is one-to-one or one-to-many. If the in-line assembly equipment 12 has high-precision assembly requirements, the slide plate speed detection device 13 and the slide plate variable speed driving device 17 can be arranged at the same time, so that when the to-be-assembled slide plate appears a sudden situation such as skidding, sudden stop, sudden acceleration, etc., the speed of the in-line assembly equipment 12 and / or the to-be-assembled slide plate is adjusted, so that the in-line assembly equipment 12 and the to-be-assembled slide plate always keep speed synchronization, preventing the occurrence of assembly accidents.

[0080] In order to clearly describe the structure of the slide plate variable speed driving device 17 of the present application, the present application refers to Figure 3The structure is shown for illustration. Specifically, the sliding plate variable speed driving device 17 mainly comprises a thrust mechanism 173, a variable speed gear disc 175 and a friction wheel 179. The thrust mechanism 173 and the variable speed gear disc 175 are in movable contact, and the variable speed gear disc 175 is fixedly connected with the friction wheel 179.

[0081] The thrust mechanism 173 is driven by the main driving motor 171 to push the variable speed gear disc 175 to rotate. The main driving motor 171 is a driving motor of the interior sliding plate line 11, and the operating speed of the synchronous motor of the line side assembly device 12 always keeps consistent with the speed.

[0082] In order to facilitate the driving of the main driving motor 171, the driving telescopic rod 172 is assembled between the thrust mechanism 173 and the main driving motor 171, and is used to transmit the driving force of the main driving motor 171. In addition, the first balancing assembly 174 is assembled in the thrust mechanism 173, and is used to balance the telescopic amount of the driving telescopic rod 172. Specifically, the first balancing assembly 174 is a spring.

[0083] The variable speed gear disc 175 is in movable contact with the thrust mechanism 173 on one side, and is fixedly connected with the friction wheel 179 through the gear disc output shaft 178 on the other side. The friction wheel 179 is pressed against the to-be-assembled sliding plate, and the friction wheel 179 is used to drive the to-be-assembled sliding plate to run linearly by using the friction force between the friction wheel 179 and the to-be-assembled sliding plate.

[0084] Specifically, the variable speed gear disc 175 is assembled with the limiting base 177 between the variable speed gear disc 175 and the friction wheel 179, and is used to limit the variable speed gear disc 175. The second balancing assembly 176 is assembled in the limiting base 177, and is used to balance the operation of the variable speed gear disc 175. Specifically, the second balancing assembly 176 is a spring.

[0085] In order to adjust the speed of the to-be-assembled sliding plate, the variable speed gear disc 175 is provided with multiple gears with different diameters, which can selectively engage with the transmission chain 16. When the transmission chain 16 and the gears with different diameters are engaged, different rotation speeds of the gear disc are generated.

[0086] When the to-be-assembled sliding plate needs to change the speed, the main driving motor 171 drives the thrust mechanism 173 to push the variable speed gear disc 175 to rotate. When the variable speed gear disc 175 rotates, the gears with different diameters on the variable speed gear disc 175 will engage with the transmission chain 16, so that the variable speed gear disc 175 generates different rotation speeds. The different rotation speeds are output to the friction wheel 179 through the gear disc output shaft 178. The friction wheel 179 will rotate at different speeds according to the variable speed gear disc 175, and the friction transmission is transmitted to the to-be-assembled sliding plate, so as to realize the speed change of the to-be-assembled sliding plate.

[0087] It is worth noting that, since the transmission chain 16 can be engaged with gears of different diameters at will when the variable gear disc 175 rotates, the assembled slide plate is always running at a real-time changing speed. In order to keep the speed unchanged after the speed of the assembled slide plate is adjusted to the right position, referring to Figure 3 , the variable gear disc 175 is also provided with a chain pressing mechanism 1751 and a pressing mechanism servo motor 1752. The pressing mechanism servo motor 1752 is used to provide driving force. The chain pressing mechanism 1751 is used to press the transmission chain 16 after the gears in the transmission chain 16 and the variable gear disc 175 are engaged, and the pressing force is adaptively adjusted by the pressing mechanism servo motor 1752 driving the pressing telescopic rod 1753.

[0088] On the basis of the slide plate variable speed driving device 17, the synchronous controller 14 is also used to determine a second synchronous control speed according to the actual speed of the slide plate and the main motor driving speed. At this time, the second synchronous control speed is the main motor driving speed. The slide plate variable speed driving device 17 is controlled according to the second synchronous control speed to change the speed of the assembled slide plate, so that the assembled slide plate and the line side assembly device 12 keep speed synchronization. For example, if the assembled slide plate needs to be accelerated after an abnormal slip, emergency stop, or other situations, or the assembled slide plate needs to be decelerated after an emergency acceleration, the synchronous controller 14 controls the slide plate variable speed driving device 17 to change the speed of the assembled slide plate based on the main motor driving speed, so that the assembled slide plate and the line side assembly device 12 keep speed synchronization at all times.

[0089] In the present application, when the assembled slide plate has an emergency situation such as slip, emergency stop, or emergency acceleration, the speed of the assembled slide plate is changed through the cooperation of the synchronous controller 14 and the slide plate variable speed driving device 17, so that the assembled slide plate and the line side assembly device 12 keep speed synchronization at all times, thereby preventing assembly accidents.

[0090] In actual application, since each slide plate on the interior slide plate line 11 has the possibility of an emergency situation, the relative distance between each slide plate is not exactly the same. If the distance between some slide plates is too large, it will waste the space of the interior slide plate line 11 and reduce the assembly efficiency. Therefore, in order to ensure the assembly efficiency, the distance between the slide plates needs to be adjusted so that the rear slide plate can catch up quickly.

[0091] For this purpose, the system of the present application further comprises light detecting devices arranged at the side of the interior sliding plate line 11 for detecting the distance difference between two adjacent sliding plates. Specifically, the number of light detecting devices is configured to be several, which are dispersed at one side or both sides of the interior sliding plate line 11. When two adjacent sliding plates pass through the light detecting devices successively, the distance difference between the two adjacent sliding plates is calculated by the time difference accumulated by the light detecting devices. Further, the total accumulated distance of the first N sliding plates before the sliding plate to be adjusted is obtained by accumulating the distance difference between each two adjacent sliding plates among the first N sliding plates before the sliding plate to be adjusted. Similarly, the single accumulated distance between the sliding plate to be adjusted and the previous sliding plate is obtained.

[0092] The synchronization controller 14 is further configured to adjust the speed of the sliding plate to be adjusted based on the total accumulated distance of the first N sliding plates before the sliding plate to be adjusted and the single accumulated distance between the sliding plate to be adjusted and the previous sliding plate, so that the sliding plate to be adjusted catches up to the position.

[0093] wherein the speed adjustment range of the sliding plate to be adjusted is V∈[V1, V2], V represents the adjustment speed of the sliding plate to be adjusted, V1 represents the speed when catching up to the position according to the single accumulated distance, and V2 represents the speed when catching up to the position according to the total accumulated distance.

[0094] During the speed adjustment of the sliding plate, the total accumulated distance, the single accumulated distance, the acceleration of the sliding plate to be adjusted, and the acceleration time of the sliding plate to be adjusted need to be considered simultaneously. For example, the acceleration cannot be too large, otherwise the operator standing on the sliding plate will not be stable and will fall down; the acceleration time cannot be too long, otherwise the production efficiency will be affected; and the adjustment speed of the sliding plate to be adjusted should avoid hitting the previous sliding plate or running too slowly to catch up to the position.

[0095] Considering the above factors comprehensively, the constraint condition of the sliding plate to be adjusted is obtained as follows:

[0096]

[0097] wherein ΔL1 represents the single accumulated distance, a represents the acceleration, t1 represents the limit time when catching up to the position according to the single accumulated distance, t2 represents the limit time when catching up to the position according to the total accumulated distance, which is set by the system, and ΔL2 represents the total accumulated distance, i represents the sliding plate, i=1 represents the previous sliding plate of the sliding plate to be adjusted, L i represents the distance of the i-th sliding plate before the sliding plate to be adjusted, L i+1 represents the distance of the i+1-th sliding plate before the sliding plate to be adjusted, L i+1 -L i represents the distance difference between the i+1-th sliding plate and the i-th sliding plate, V i represents the initial speed of the i+1-th sliding plate, t iLimit time of the i+1th block skateboard.

[0098] All the above are exemplary descriptions of the intelligent synchronization system of the present application. The running state of the skateboard is detected by directly contacting the skateboard speed detection device with the skateboard on the side of the interior trim line assembly. The sudden conditions such as skidding, sudden stop, and sudden acceleration can be accurately detected when the skateboard is advancing. The speed of the line assembly device is adjusted in time by the synchronization controller when the skateboard appears the above-mentioned sudden conditions, so that the line assembly device can always keep speed synchronization with the skateboard when the above-mentioned sudden conditions occur, thereby preventing the occurrence of assembly accidents.

[0099] Although the preferred embodiments of the present application have been described, those skilled in the art who have the benefit of the present disclosure can make additional changes and modifications to these embodiments once the basic inventive concept is known. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0100] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An intelligent synchronization system, characterized by, The system comprises: an interior trim slide rail, a line-side assembly device, a slide rail speed detection device, a synchronous controller; wherein, The interior trim slide rail is loaded with a plurality of slide rails; each slide rail is fixedly assembled with a body-in-white or is a blank slide rail; The line-side assembly device is arranged on the side of the interior trim slide rail as needed, and is used for cooperating with the slide rail to be assembled in the interior trim slide rail to complete automobile part assembly; The slide rail speed detection device is fixedly assembled on the side of the interior trim slide rail and is arranged in pairs with the line-side assembly device; The slide rail speed detection device comprises: a fixed base plate, a base plate, a rolling wheel pressing mechanism and a rolling wheel carrying an angular velocity detector; the rolling wheel presses the slide rail to be assembled; when the slide rail to be assembled advances, the rolling wheel is driven to rotate by friction, and the linear motion state of the slide rail is converted into a circular motion state; the angular velocity detector indirectly obtains the actual speed of the slide rail to be assembled by detecting the rolling wheel, and transmits the actual speed to the synchronous controller; wherein, the fixed base plate comprises a fixed part and an extension part; the extension part is perpendicular to the fixed part; the fixed part is fixed on the side of the interior trim slide rail; the extension part is two connecting plates with the same structure; the two connecting plates are perpendicular to the fixed part and cannot be detached; in addition to fixedly connecting the base plate, the two connecting plates also have the function of receiving the rolling wheel pressing mechanism; one end of the base plate is fixedly assembled with the fixed base plate; the other end of the base plate is assembled with the rolling wheel by using a bearing assembly; the rolling wheel and the angular velocity detector are respectively assembled at two ends of the bearing assembly; wherein, the base plate is fixedly connected by a hollow cylinder and a bearing panel; one end of the hollow cylinder is fixedly assembled between the two connecting plates in a screwing manner; the bearing panel is assembled with the bearing assembly; when the slide rail advances, the rolling wheel is in contact with the slide rail; since the rolling wheel is pressed on the slide rail to be assembled, the rolling wheel is driven to rotate by friction when the slide rail to be assembled advances, and the linear motion state of the slide rail is converted into a circular motion state; the rolling wheel pressing mechanism penetrates through the middle segment of the base plate and is connected with the extension part of the fixed base plate, and is used for adjusting the pressing force of the rolling wheel on the slide rail to be assembled; wherein, a connecting piece of the rolling wheel pressing mechanism penetrates through the other end of the hollow cylinder perpendicularly and is connected to the extension part; the connecting piece is sleeved with a spring and is matched with a nut to adjust the pressing force of the rolling wheel on the slide rail to be assembled; The synchronous controller is used for determining a first synchronous control speed according to the actual speed of the slide rail and a main motor driving speed corresponding to the slide rail to be assembled, and controlling the running speed of the line-side assembly device according to the first synchronous control speed, so that the line-side assembly device and the slide rail to be assembled keep speed synchronization.

2. The system of claim 1, wherein, The synchronous controller is specifically used for: determining a speed difference coefficient K according to the actual speed of the slide rail and the main motor driving speed; wherein, the speed difference coefficient is the ratio of the actual speed of the slide rail to the main motor driving speed; judging whether the speed difference coefficient K is 1; When K=1, it indicates that the to-be-assembled slide plate and the line-side assembly equipment are synchronized; When K≠1, the actual speed of the slide plate is output to the PLC of the synchronous motor as the first synchronous control speed, and the PLC controls the running speed of the synchronous motor according to the actual speed of the slide plate, so as to realize the speed synchronization control of the line-side assembly equipment and the to-be-assembled slide plate; at the same time, abnormal information is generated and transmitted to the alarm system for sound and light alarm, prompting the on-line assembly personnel.

3. The system of any of claims 1-2, wherein, The line-side assembly equipment is provided with a sensing device for contacting the body-in-white of the to-be-assembled slide plate after the line-side assembly equipment and the to-be-assembled slide plate are synchronized; When the speed of the line-side assembly equipment and / or the body-in-white fluctuates, the sensing device generates a compression change amount or an extension change amount and transmits it to the synchronous controller; The synchronous controller is also used for judging the compression change amount through a set compression interval, or judging the extension change amount through a set extension interval, and controlling the alarm system to sound and light alarm when the interval is exceeded.

4. The system of claim 1, wherein, The system further comprises: A transmission chain arranged on the interior trim slide plate line; A slide plate variable speed driving device fixedly arranged on the side of the interior trim slide plate line and arranged in pairs with the line-side assembly equipment, used for adjusting the change speed of the to-be-assembled slide plate, so as to synchronize the speed of the to-be-assembled slide plate and the line-side assembly equipment.

5. The system of claim 4, wherein, The slide plate variable speed driving device comprises a thrust mechanism, a variable speed gear disc and a friction wheel; The thrust mechanism drives the variable speed gear disc to rotate under the driving action of the main driving motor; The variable speed gear disc is fixedly connected with the friction wheel through a gear disc output shaft, and the friction wheel presses the to-be-assembled slide plate; wherein the variable speed gear disc is provided with multiple gears with different diameters and selectively engages with the transmission chain; When the to-be-assembled slide plate needs to change speed, the main driving motor drives the thrust mechanism and pushes the variable speed gear disc to rotate, so that the gears with different diameters on the variable speed gear disc engage with the transmission chain to generate different rotating speeds, and the gear disc output shaft outputs the different rotating speeds to the friction wheel, and the friction wheel rotates at different rotating speeds following the variable speed gear disc and transmits the rotating speeds to the to-be-assembled slide plate through friction transmission, so as to realize the speed change of the to-be-assembled slide plate.

6. The system of claim 5, wherein, The slide plate variable speed driving device further comprises: A driving telescopic rod arranged between the thrust mechanism and the main driving motor, used for transmitting the driving force of the main driving motor; A first balance assembly arranged inside the thrust mechanism, used for balancing the telescopic amount of the driving telescopic rod; A limiting base arranged between the variable speed gear disc and the friction wheel, used for limiting the variable speed gear disc; A second balance assembly arranged inside the limiting base, used for balancing the operation of the variable speed gear disc.

7. The system of claim 5, wherein, The system further comprises: A pressing mechanism servo motor; A chain pressing mechanism in the variable speed gear disc, used for pressing the transmission chain after the gears in the transmission chain and the variable speed gear disc engage with each other, and adaptively adjusting the pressing force through the pressing mechanism servo motor and the pressing telescopic rod.

8. The system of any of claims 4-7, wherein, The synchronization controller is further configured to determine a second synchronization control speed according to the actual speed of the slide plate and the main motor driving speed, and control the slide plate variable speed driving device according to the second synchronization control speed to change the speed of the slide plate to be assembled, so that the slide plate to be assembled and the line side assembling device are kept speed synchronized; wherein the second synchronization control speed is the main motor driving speed.

9. The system of claim 1, wherein, The system further comprises a light detection device arranged on the side of the interior trim slide plate line, configured to detect the distance difference between two slide plates. The synchronization controller is further configured to adjust the speed of the slide plate to be adjusted in combination with the total cumulative distance of the front N slide plates of the slide plate to be adjusted and the single cumulative distance of the slide plate to be adjusted and the previous slide plate, so that the slide plate to be adjusted is caught up in place. The speed regulation range of the speed-regulated skateboard , , , , , , , , , , , i , i=1 , , i , , i+1 , , i+1 , i , , , i+1 , , i+1 , The speed regulation range of the speed-regulated skateboard , , , , , , , , , , , i , i=1 , , i , , i+1 , , i+1 , i , , , i+1 , , i+1 , The speed regulation range of the speed-regulated skateboard , , , , , , , , , , , i , i=1 , , i , , i+1 , , i+1 , i , , , i+1 , , i+1 , The speed regulation range of the speed-regulated skateboard , , , , , , , , , , , i , i=1 , , i , , i+1 , , i+1 , i , , , i+1 , , i+1 , The speed regulation range of the speed-regulated skateboard <

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