CN114833498A

CN114833498A - Switching system and method for collinear production of multiple vehicle types

Info

Publication number: CN114833498A
Application number: CN202210576233.0A
Authority: CN
Inventors: 张殿平; 马春辉; 张雷雷; 邱言浩; 郭少磊; 霍增辉; 王春晖
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-08-02

Abstract

The invention discloses a switching system and a switching method for collinear production of multiple vehicle types, which relate to the field of automobile production devices; the system comprises an in-line fixture library, an AGV conveying system and an intelligent fixture three-dimensional library; the in-line clamp storeroom stores clamps of two vehicle types; the AGV conveying system is connected with the in-line fixture warehouse and the intelligent fixture three-dimensional warehouse in series; the in-line clamp library is a double-library bit plane clamp library, the double-library bit plane clamp library comprises two clamp storage bits, and the two clamp storage bits are a storage clamp storage bit and a reserved clamp storage bit respectively; the in-line fixture library also comprises a transfer sliding table for moving the fixture and a fixture working position for processing the fixture; a welding robot arm is arranged at the upper part of the working position of the clamp; the transfer sliding table is connected with a production management system; the problem of the anchor clamps are deposited in the collinear production unit of more motorcycle type is solved, reduced line body space and reduced investment cost.

Description

Switching system and method for collinear production of multiple vehicle types

Technical Field

The invention relates to the field of automobile production devices, in particular to a switching system and a switching method for multi-vehicle type collinear production.

Background

A body-in-white welding production line continuously pursues collinear production of more vehicle types, and the switching of a vehicle body positioning welding clamp is a key factor for the feasibility of the collinear production of multiple vehicle types in a workshop. Because the positioning welding anchor clamps are comparatively complicated and the characteristics of heavily loaded, need the whole switching of anchor clamps when switching different motorcycle types, common solution does: turntable switching, hub switching and in-line clamp library switching. Because the position switching of positioning welding anchor clamps is accomplished to above-mentioned equipment of prior art all utilizing in the production line, anchor clamps and switching equipment need occupy great production line space, have the problem that the storage quantity is limited, area is big.

The existing expansibility solution is to make a two-layer repository in the line body, and only increase the area of part of equipment while increasing the capacity of the fixture switching repository. However, the design of two-layer storage can increase a plurality of high-power motors, slide rails and heavy-load steel structures, and the design structure is complex and the failure rate of equipment is high. Under the condition that the split areas of the white body welding workshop need to be switched in a large batch, the scheme cannot be generally popularized. Therefore, under the condition that the flexible demand of the number of the vehicle models of the production line of the body-in-white workshop is gradually increased, a switching system with higher flexibility degree, smaller occupied space and lower investment cost needs to be designed.

Disclosure of Invention

For solving white automobile body and welding the regional multi-vehicle type collineation production problem of sub-assembly, prior art mostly utilizes the switching equipment to accomplish the position switching of positioning welding anchor clamps in the production line, switching equipment has taken a large amount of spaces, the present white automobile body welds the regional multi-vehicle type collineation production line internal space of sub-assembly and very limited, the demand that multiple motorcycle type production can't be satisfied to anchor clamps quantity, the switching of anchor clamps is wasted time and energy, investment cost is higher, these problems are the problem of waiting to solve urgently among the prior art. The invention aims to provide a switching system and a switching method for multi-vehicle type collinear production, which can realize more vehicle types under the conditions of smaller occupied space in a production line body and less investment cost.

The technical scheme adopted by the invention for solving the technical problem is as follows: the invention provides a switching system for collinear production of multiple vehicle types, which comprises an in-line fixture library, an AGV conveying system and an intelligent fixture three-dimensional library, wherein the in-line fixture library is used for storing a plurality of vehicle types; the in-line clamp storeroom stores clamps of two vehicle types; the AGV conveying system is connected with the in-line fixture warehouse and the intelligent fixture three-dimensional warehouse in series; the in-line clamp library is a double-library bit plane clamp library, the double-library bit plane clamp library comprises two clamp storage bits, and the two clamp storage bits are a storage clamp storage bit and a reserved clamp storage bit respectively; the in-line fixture library also comprises a transfer sliding table for moving the fixture and a fixture working position for processing the fixture; a welding robot arm is arranged at the upper part of the working position of the clamp; the transfer sliding table is connected with a production management system.

As a further improvement of the above technical scheme, the intelligent fixture three-dimensional warehouse comprises a storage management scheduling system, a stacker and a shelf; the warehouse management scheduling system identifies the vehicle type number of the clamp through the RFID technology, distributes and schedules the stacker to move in the X \ Y \ Z direction in a roadway to place the clamp into a corresponding goods shelf, and records the storage position of the clamp.

As a further improvement of the technical scheme, the AGV conveying system comprises an AGV dispatching system, a backpack AGV and a lifting platform, wherein the AGV dispatching system reads vehicle type scheduling information given by the production management system and judges whether clamps in the three-dimensional library need to be switched to clamp work positions for standby.

The invention provides a switching method for multi-vehicle type collinear production, which comprises an in-line clamp library, an AGV conveying system and an intelligent clamp three-dimensional library, wherein the in-line clamp library is used for storing a plurality of pieces of vehicle type collinear production; the in-line clamp storeroom stores clamps of two vehicle types; the AGV conveying system is connected with the in-line fixture warehouse and the intelligent fixture three-dimensional warehouse in series; the in-line clamp library is a double-library bit plane clamp library, the double-library bit plane clamp library comprises two clamp storage bits, and the two clamp storage bits are a storage clamp storage bit and a reserved clamp storage bit respectively; the in-line fixture library also comprises a transfer sliding table for moving the fixture and a fixture working position for processing the fixture; a welding robot arm is arranged at the upper part of the working position of the clamp; the transfer sliding table is connected with a production management system; when the clamps need to be switched, the production management system gives a signal, the moving sliding table carries the clamps on the working positions to the reserved clamp storage positions, and then the clamps for storing the clamp storage positions are carried to the clamp working positions.

As a further improvement of the technical scheme, when the three-dimensional warehouse receives an order of scheduling information, the storage management scheduling system judges the type of the clamp, the stacker goes to the position according to the storage position of the clamp, the clamp of the vehicle type is taken out and put to the outlet of the three-dimensional warehouse, the clamp is placed on the AGV through the lifting platform of the AGV conveying system, then the AGV is conveyed to the in-line clamp warehouse, and then the AGV is conveyed to the clamp working position under the action of the transfer sliding platform on the in-line clamp warehouse.

As a further improvement of the technical scheme, the backpack AGV receives an instruction of an AGV dispatching system to be responsible for serially connecting the in-line fixture library and the intelligent fixture three-dimensional library, moves out the non-scheduled vehicle type fixtures from the production unit and stores the non-scheduled vehicle type fixtures into the intelligent fixture three-dimensional library, leads out the scheduled vehicle type fixtures from the three-dimensional library, and then stores the fixture into the in-line fixture library for waiting for production; the lifting platform is installed on the AGV, and the falling and the separation of the clamp in the storage position are realized through the lifting action of the lifting platform.

According to the technical scheme, the invention has the beneficial effects that: the invention provides a brand new flexible scheme of the sub-assembly production unit of the vehicle body welding production line by utilizing the integration of the three-dimensional library, the real-time property of the plane fixture library and the flexibility of AGV conveying. The problem of the anchor clamps are deposited in the collinear production unit of more motorcycle types is solved, line body space has been reduced and investment cost has been reduced.

The switching system for the collinear production of the multiple vehicle types utilizes the three-dimensional warehouse to intensively store most of clamps to be produced in each sub-assembly processing unit of the body-in-white, and reduces the clamp storage area and the plane warehouse investment in the production unit. The in-line clamp library stores the clamps of two motorcycle types, satisfies the demand of the temporary storage of the fast switch-over of motorcycle type and anchor clamps in the production unit. And carrying the clamps by an AGV to serially connect the clamp three-dimensional library and the in-line clamp library, and switching the clamps to be produced into the in-line clamp library in advance according to a production plan.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a flowchart illustrating switching of the in-line jig library jig according to an embodiment of the present invention.

FIG. 2 is a flow chart of clamp switching between workstations in accordance with an embodiment of the present invention.

Fig. 3 is a schematic overall structure diagram of an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an intelligent fixture stereo library according to an embodiment of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below: 1. welding a robot arm; 2. a storage fixture storage bit; 3. an AGV transport system; 4. an in-line clip library; 5. a transfer sliding table; 6. an intelligent clamp three-dimensional warehouse; 7. a stacker; 8. reserving a clamp storage position; 9. a clamp working position; 10. a production unit; 11. a shelf; 12. and (4) clamping.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present embodiment, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

Referring to fig. 1-4, the invention discloses a switching system and method for multi-vehicle type collinear production, comprising an in-line clamp library 4, an AGV conveying system 3 and an intelligent clamp three-dimensional library 6; the in-line clamp library 4 stores clamps of two vehicle types; the AGV conveying system 3 is connected with the in-line clamp library 4 and the intelligent clamp three-dimensional library 6 in series; the in-line clamp library 4 is a double-library bit plane clamp library, the double-library bit plane clamp library comprises two clamp storage bits, and the two clamp storage bits are a storage clamp storage bit 2 and a reserved clamp storage bit 8 respectively; the in-line clamp library 4 further comprises a transfer sliding table 5 for moving the clamp and a clamp working position 9 for processing the clamp; the upper part of the clamp working position 9 is provided with a welding robot arm 1; the transfer sliding table 5 is connected with a production management system. The invention uses the intelligent clamp three-dimensional warehouse 6 to store most of the clamps to be produced in each sub-assembly processing unit of the body-in-white, thereby reducing the clamp storage area and the plane warehouse investment in the production unit 10. The in-line jig library 4 stores jigs of two vehicle types, and meets the requirements of rapid switching of vehicle types and temporary storage of jigs in the production unit 10. The AGV conveying system 3 is used for serially connecting the intelligent clamp three-dimensional library 6 and the in-line clamp library 4, and clamps to be produced are switched into the in-line clamp library 4 in advance according to a production plan.

In the above, one in-line clamp library 4 is matched with the welding robot arm 1 to form one workstation, and the switching system can meet the real-time switching of the two special clamps for the vehicle type. When the vehicle type anchor clamps in the workstation need to switch, the production management system gives the signal, instructs to move and carries the anchor clamps on the slip table 5 earlier the operating position and carry to reserve anchor clamps storage position 8, carries the anchor clamps of storage anchor clamps storage position 2 to anchor clamps operating position 9 again, realizes the switching of in-line anchor clamps.

The free access of AGV conveying system 3 can be satisfied in the below space of above-mentioned anchor clamps storage position (storage anchor clamps storage position 2 and reservation anchor clamps storage position 8), and AGV conveying system 3 accomplishes getting of anchor clamps through the lift action of AGV elevating platform and puts, realizes the switching of the anchor clamps on in-line anchor clamps storehouse 4 and the three-dimensional storehouse. One or more in-line jig libraries 4 are assembled with a processing robot (welding robot arm 1) into a standardized flexible production unit 10. Each production cell 10 can store a variety of different vehicle model specific fixtures.

The intelligent fixture three-dimensional warehouse 6 comprises a warehouse management scheduling system, a stacker 7 and a goods shelf 11; the warehousing management scheduling system identifies the vehicle type number of the clamp through the RFID technology, distributes and schedules the stacker 7 to move in the X \ Y \ Z direction in a roadway, places the clamp into the corresponding shelf 11, and records the storage position of the clamp. When the three-dimensional warehouse receives an instruction of scheduling information, the warehousing management scheduling system judges which type of fixture is needed, commands the stacker 7 to go to the position according to the storage position of the previously recorded fixture, takes out the fixture of the vehicle type and puts the fixture to the outlet of the three-dimensional warehouse, places the fixture on the AGV through the lifting platform of the AGV conveying system 3, then conveys the fixture to the in-line fixture warehouse 4, and then conveys the fixture to the fixture working positions 9 under the action of the transfer sliding platform 5 on the in-line fixture warehouse 4, so that the fixture on the intelligent fixture three-dimensional warehouse 6 can be freely switched to each fixture working position 9; the pallet 11 is provided with clamps 12, wherein A, B, C … … represents the type of clamp corresponding to different vehicle types.

The AGV conveying system 3 comprises an AGV dispatching system, a backpack AGV and a lifting platform (not shown in the attached drawings), wherein the AGV dispatching system reads vehicle type scheduling information given by the production management system and judges whether clamps in the three-dimensional library need to be switched to the clamp working position 9 for standby. The backpack AGV receives an instruction of an AGV dispatching system to be responsible for serially connecting the in-line fixture library 4 and the intelligent fixture three-dimensional library 6, moves out the non-scheduled vehicle type fixtures from the production unit 10 and stores the non-scheduled vehicle type fixtures into the intelligent fixture three-dimensional library 6, leads out the scheduled vehicle type fixtures from the three-dimensional library, and then stores the fixture into the line fixture library to wait for production; the lifting platform is installed on the AGV, and the falling and the separation of the clamp in the storage position are realized through the lifting action of the lifting platform.

Working condition 1: and according to the scheduling information given by the production management system, the next group of production tasks are B vehicle types. As shown in fig. 1 and fig. 3, the fixture working position 9 on the in-line fixture library 4 is a in-line fixture type, the storage fixture storage position 2 of the in-line fixture library 4 for fixture of type B is provided, when fixtures of two types of vehicles need to be switched, the production management system gives a signal to instruct the transfer sliding table 5 to firstly transfer the fixture of type a on the fixture working position 9 to the reserved fixture storage position 8, then the fixture of type B is moved out of the storage fixture storage position 2 and then carried to the fixture working position 9, and the vehicle type switching is completed.

Working condition 2: and according to the scheduling information given by the production management system, the next group of production tasks are of the type C. As shown in fig. 2 and 3, the fixture working position 9 on the in-line fixture library 4 is a in-line fixture type, the fixture of type B is in the storage fixture storage position 2, the two sets of fixtures cannot meet the production requirement, the AGV dispatching system receives tasks, the dispatching piggyback AGV starts the production unit 10 and enters the storage fixture storage position 2 of the in-line fixture library 4, the jacking mechanism jacks up the fixture to separate from the storage position, the AGV carries the fixture of type B to move to the entrance and the falling position of the stereo library, then the AGV moves to the exit of the stereo library to connect the fixture of type C, and the fixture is returned to be placed into the in-line fixture library 4 along the coming route. Meanwhile, the RFID of the three-dimensional warehouse reads the type of the clamp at the inlet, the warehousing management system dispatches the stacker 7 to store the clamp on the goods shelf 11, and the type and the corresponding goods position are recorded. And then the stacker 7 forks other C-vehicle type sub-assembly fixtures and puts the sub-assembly fixtures on an outlet of the three-dimensional warehouse.

The three-dimensional library can meet the storage of a plurality of machining unit fixtures and the picking and placing of a plurality of AGV, and each AGV can meet the fixture switching of a plurality of units according to the batch production quantity.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative positions if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A switching system for multi-vehicle type collinear production is characterized by comprising an in-line clamp library, an AGV conveying system and an intelligent clamp three-dimensional library; the in-line clamp storeroom stores clamps of two vehicle types; the AGV conveying system is connected with the in-line fixture warehouse and the intelligent fixture three-dimensional warehouse in series; the in-line clamp library is a double-library bit plane clamp library, the double-library bit plane clamp library comprises two clamp storage bits, and the two clamp storage bits are a storage clamp storage bit and a reserved clamp storage bit respectively; the in-line fixture library also comprises a transfer sliding table for moving the fixture and a fixture working position for processing the fixture; a welding robot arm is arranged at the upper part of the working position of the clamp; the transfer sliding table is connected with a production management system.

2. The switching system for the collinear production of multiple vehicle types according to claim 1, wherein the intelligent fixture three-dimensional warehouse comprises a storage management scheduling system, a stacker and a shelf; the warehouse management scheduling system identifies the vehicle type number of the clamp through the RFID technology, distributes and schedules the stacker to move in the X \ Y \ Z direction in a roadway to place the clamp into a corresponding goods shelf, and records the storage position of the clamp.

3. The switching system of the collinear production of multiple vehicle types according to claim 1, wherein the AGV conveying system comprises an AGV dispatching system, a backpack AGV and an elevator platform, and the AGV dispatching system reads the vehicle type scheduling information given by the production management system and judges whether the clamps in the stereo library need to be switched to the clamp work positions for standby.

4. A switching method for multi-vehicle type collinear production is characterized by comprising an in-line clamp library, an AGV conveying system and an intelligent clamp three-dimensional library; the in-line clamp storeroom stores clamps of two vehicle types; the AGV conveying system is connected with the in-line fixture warehouse and the intelligent fixture three-dimensional warehouse in series; the in-line clamp library is a double-library bit plane clamp library, the double-library bit plane clamp library comprises two clamp storage bits, and the two clamp storage bits are a storage clamp storage bit and a reserved clamp storage bit respectively; the in-line fixture library also comprises a transfer sliding table for moving the fixture and a fixture working position for processing the fixture; a welding robot arm is arranged at the upper part of the working position of the clamp; the transfer sliding table is connected with a production management system; when the clamps need to be switched, the production management system gives a signal, the moving sliding table carries the clamps on the working positions to the reserved clamp storage positions, and then the clamps for storing the clamp storage positions are carried to the clamp working positions.

5. The switching method of the multi-vehicle type collinear production according to claim 4, wherein the intelligent fixture stereo library comprises a storage management scheduling system, a stacker and a shelf; the warehouse management scheduling system identifies the vehicle type number of the clamp through the RFID technology, distributes and schedules the stacker to move in the X \ Y \ Z direction in a roadway to place the clamp into a corresponding goods shelf, and records the storage position of the clamp.

6. The switching method of the collinear production of the multiple vehicle types according to claim 5, wherein when the three-dimensional warehouse receives the order of the scheduling information, the warehousing management scheduling system judges the type of the clamp, and according to the storage position of the clamp, the stacker goes to the position, takes out the vehicle type clamp and puts the vehicle type clamp to the outlet of the three-dimensional warehouse, places the clamp on the AGV through the lifting platform of the AGV conveying system, then conveys the vehicle type clamp to the in-line clamp warehouse, and then conveys the vehicle type clamp to the clamp working position under the action of the transfer sliding platform on the in-line clamp warehouse.

7. The switching method of the collinear production of the multiple vehicle types according to claim 6, wherein the AGV conveying system comprises an AGV dispatching system, a backpack AGV and a lifting platform, wherein the AGV dispatching system reads the vehicle type scheduling information given by the production management system and judges whether the clamps in the three-dimensional library need to be switched to the clamp work positions for standby.

8. The switching method of the collinear production of the multiple vehicle types according to claim 7, wherein the piggyback AGV receives an instruction of an AGV dispatching system to be responsible for connecting the inline jig library and the intelligent jig three-dimensional library in series, moves the non-production-scheduled vehicle type jig out of the production unit and stores the non-production-scheduled vehicle type jig into the intelligent jig three-dimensional library, and leads out the production-scheduled vehicle type jig from the three-dimensional library and then stores the production-scheduled vehicle type jig into the line jig library to wait for production; the lifting platform is installed on the AGV, and the falling and the separation of the clamp in the storage position are realized through the lifting action of the lifting platform.