A lifting base plate positioning system for general assembly workstation

Abstract

The present invention relates to a liftable base plate positioning system for a general assembly station, including a base plate frame, a support frame, a lifting platform, a lifting assembly and a height locking assembly; the base plate frame is installed on the ground and arranged on both sides of the roller bed in a decentralized structure, the support frame is arranged in the base plate frame and used to carry the roller bed, the lifting platform is arranged on both sides of the roller bed in a decentralized structure and used to carry the positioning fixture, the lifting assembly is installed on the support frame and is connected to the lifting platform in a transmission manner to drive the lifting platform to rise and fall, and the height locking assembly is used to lock the lifting platform in the highest position. Compared with the prior art, the present invention controls the lifting and lowering of the positioning fixture height while the conveying height of the roller bed remains unchanged, thereby ensuring that the vehicle body is transported at the same horizontal height in the entire area, which can save time and improve efficiency, and at the same time enable the working height of the production line to be at a lower level, thereby reducing production costs and facilitating installation, maintenance and production.

Description

Technical Field

[0001] The invention relates to the technical field of automobile assembly, and in particular to a liftable bottom plate positioning system for a general assembly station. Background Art

[0002] In the automobile welding production line that needs to use roller bed transmission, the positioning fixtures on both sides of the roller bed of some stations will hinder the transportation of the car body. At present, most of the domestic solutions are to replace the fixed roller bed of the previous station with a lifting roller bed to lift the car body to the required height, and then all stations will be transported at a higher level. However, this solution will raise the working height in a certain area, greatly increase the production cost, and is not convenient for installation, maintenance and production. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a liftable base plate positioning system for the general assembly station.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A liftable base plate positioning system for a general assembly station, comprising a base plate frame, a support frame, a lift platform, a lift assembly and a height locking assembly;

[0006] The bottom plate frame is installed on the ground and arranged on both sides of the roller bed in a distributed structure.

[0007] The support frame is arranged in the bottom frame and is used to carry the roller bed.

[0008] The lifting platform is arranged on both sides of the roller bed in a decentralized structure to carry the positioning fixture.

[0009] The lifting assembly is installed on the support frame and is connected to the lifting platform for driving the lifting platform to move up and down.

[0010] The height locking assembly is used to lock the lifting platform at the highest position.

[0011] Preferably, the lifting assembly consists of a rotary lifting mechanism and a linear guide rail; the rotary lifting mechanism consists of a motor, a reducer, a rocker arm, a guide wheel and a slide groove; the motor and the reducer are transmission-connected and fixed to the support frame, one end of the rocker arm is connected to the output shaft of the reducer, the guide wheel is arranged at the other end of the rocker arm, the slide groove is horizontally arranged on the lifting platform, the guide wheel is located in the slide groove and can roll along the length direction of the slide groove; the linear guide rail is a vertical guide rail, which is slidingly connected to the lifting platform.

[0012] Preferably, the lifting platform adopts a decentralized structure and is composed of two lifting frames arranged on both sides of the roller bed, and each lifting frame is provided with a slide groove; the transmission-connected motor and reducer are located in the middle of the two lifting frames, and the reducer is a double-output shaft reducer, each output shaft of the reducer is connected to a rocker arm, and each rocker arm is provided with a guide wheel, and the two guide wheels are respectively matched and connected with the slide grooves on the two lifting frames.

[0013] Preferably, the slide groove is horizontally fixed to the bottom of the lifting platform.

[0014] Preferably, the height locking assembly includes a sub-end and a female end; the sub-end is fixed to the outer side of the lifting platform and is a fixed block with a locking socket; the female end includes a locking rail, a locking slider, a locking plug and a locking cylinder, the locking rail is arranged on the base frame and is located on the outer side of the lifting platform, the locking slider is slidably connected to the locking rail, and can move along the locking rail toward or away from the lifting platform, the locking cylinder is fixed on the base frame, and is used to push the locking slider to move, the locking plug is arranged on the locking slider, and is used to be inserted into the locking socket when the lifting platform is raised to the highest position, so as to lock the lifting platform at the highest position.

[0015] Preferably, it also includes a lifting guide assembly, which is composed of a fixed part and a movable part that are slidably connected. The fixed part is arranged on the supporting frame, and the movable part is arranged on the lifting platform.

[0016] The working principle of the present invention is: when the positioning fixture of a certain station will hinder the transportation of the car body, the system is used to carry the positioning fixture of the station through the lifting platform, so that the height of the positioning fixture can be raised or lowered, while the conveying height of the roller bed remains unchanged. This solution ensures that the car body is transported at the same level in the entire area, which can save time and improve efficiency. At the same time, the working height of the production line is at a lower level, which reduces production costs and facilitates installation, maintenance and production.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) Optimize regional processes and reduce production costs;

[0019] (2) Accurate and reliable positioning;

[0020] (3) The rotating lifting mechanism changes quickly, saving time and improving production efficiency;

[0021] (4) Installation and maintenance are more convenient;

[0022] (5) Strong carrying capacity;

[0023] (6) Wide applicability: It can adapt to roller beds of different widths, and the lifting platform can be installed with positioning fixtures for different types of vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the lifting unit of the present invention;

[0026] Figure 3 It is a schematic diagram of the lifting stroke of the lifting platform of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the rotary lifting mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the front view of the rotary lifting mechanism of the present invention;

[0029] Figure 6 It is a schematic structural diagram of the height locking assembly of the present invention.

[0030] In the figure, 1 is a base frame, 2 is a supporting frame, 3 is a lifting platform, 31 is a lifting frame, 4 is a lifting assembly, 41 is a motor, 42 is a reducer, 43 is a rocker arm, 44 is a guide wheel, 45 is a slide groove, 46 is a linear guide rail, 5 is a height locking assembly, 51 is a sub-end, 52 is a locking slide rail, 53 is a locking slider, 54 is a locking plug, 55 is a locking cylinder, and 6 is a lifting guide assembly. DETAILED DESCRIPTION

[0031] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] A lifting and lowering base plate positioning system for a general assembly station, such as Figures 1-2 As shown, it includes a base frame 1 and a support frame 2, a lifting platform 3, a lifting component 4 and a height locking component 5 constituting a lifting unit;

[0034] The bottom frame 1 is installed on the ground and arranged on both sides of the roller bed in a distributed structure.

[0035] The support frame 2 is arranged in the bottom frame 1 and is used to carry the roller bed.

[0036] The lifting platform 3 is arranged on both sides of the roller bed in a distributed structure to carry the positioning fixture.

[0037] The lifting assembly 4 is installed on the supporting frame 2 and is connected to the lifting platform 3 in a transmission manner to drive the lifting platform 3 to move up and down.

[0038] The height locking assembly 5 is used to lock the lifting platform 3 at the highest position.

[0039] In this embodiment, the bottom frame 1 adopting a decentralized structure is composed of two bottom frame bodies distributed on both sides of the roller bed. The support frame is installed on the ground, and its width is limited by the bottom frame and is adjustable to adapt to roller beds of different widths.

[0040] like Figures 2 to 5 As shown, the lifting assembly 4 in this embodiment is composed of a rotary lifting mechanism and a linear guide 46; the rotary lifting mechanism is composed of a motor 41, a reducer 42, a rocker arm 43, a guide wheel 44 and a slide 45, the motor 41 and the reducer 42 are connected and fixed to the support frame 2, one end of the rocker arm 43 is connected to the output shaft of the reducer 42, the guide wheel 44 is arranged at the other end of the rocker arm 43, the slide 45 is horizontally arranged on the lifting platform 3, the guide wheel 4 is located in the slide 45 and can roll along the length direction of the slide 45; the linear guide 46 is a vertical guide, which is slidably connected to the lifting platform 3, preferably the linear guide 46 is arranged at the end of the lifting platform 3, and is slidably connected to the end of the lifting platform 3 in the vertical direction. The lifting assembly of this embodiment converts the rotary motion output by the motor into linear motion through the rotary lifting mechanism and the linear guide 46. The motor drives the rocker arm to rotate once, and the lifting platform 3 completes one lifting. The output shaft of the reducer is half of the lifting stroke. Figure 3 The lifting stroke of the lifting platform 3 is shown (the dotted line indicates the lowest position). Figure 4 and Figure 5 The state of the lifting platform 3 when it is at the highest position is shown. Furthermore, the lifting platform 3 adopting a decentralized structure in this embodiment is composed of two lifting frames 31 arranged on both sides of the roller bed, each lifting frame 31 is provided with a slide 44, and preferably the slide 45 is horizontally fixed to the bottom of the lifting frame 31; the transmission-connected motor 41 and the reducer 42 are located in the middle of the two lifting frames 31, and the reducer 42 is a double-output shaft reducer, each output shaft of the reducer 42 is connected to a rocker arm 43, each rocker arm 43 is provided with a guide wheel 44, and the two guide wheels 44 are respectively matched and connected with the slide 45 on the two lifting frames 31. In order to improve the stability during the lifting process, the lifting components 4 in this embodiment are provided with two groups, which are symmetrically arranged along the length direction of the lifting platform 3, and the lifting movement of the lifting platform 3 is synchronously completed by these two groups of lifting components 4. The lifting height of the lifting platform 3 is recorded as H, and its value can be designed according to needs. In this embodiment, H=500mm is selected.

[0041] like Figure 2 and 6As shown, the height locking assembly 5 includes a sub-end 51 and a female end; the sub-end 51 is fixed to the outer surface of the lifting platform 3 (rising with the lifting platform 3), and is a fixed block with a locking socket; the female end includes a locking rail 52, a locking slider 53, a locking plug 54 and a locking cylinder 55. The locking rail 52 is arranged on the base frame 1 and is located on the outer side of the lifting platform 3. The locking slider 53 is slidably connected with the locking rail 52 and can move toward or away from the lifting platform 3 along the locking rail 52. The locking cylinder 55 is fixed on the base frame 1 and is used to push the locking slider 53 to move. The locking plug 54 is arranged on the locking slider 53 and is used to be inserted into the locking socket when the lifting platform 3 is raised to the highest position, so as to lock the lifting platform 3 at the highest position. In this embodiment, two sets of height locking assemblies are arranged on each side of the lifting platform 3.

[0042] The system also includes a lifting guide assembly 6, which is composed of a fixed part and a moving part that are slidably connected. The fixed part is arranged on the support frame 2, and the moving part is arranged on the lifting platform 3. The assembly guides the lifting mechanism in the X and Y directions to improve the accuracy of the lifting movement. The fixed part can be a vertical guide rail, and the moving part can be a slider.

[0043] When the system works, it includes the following steps:

[0044] Lifting platform ready state: the lifting mechanism is in the lowest position, and the locking assembly 4 is in the separated state.

[0045] (1) The automobile body is delivered to the destination.

[0046] (2) The lifting platform is raised to the highest position and the height locking assembly 4 is locked.

[0047] (3) Perform welding operations.

[0048] (4) After welding is completed, the height locking assembly 4 is separated and the lifting mechanism descends to the lowest position.

[0049] (5) The car body is transported away.

[0050] The positioning fixture of this station is carried by a lifting platform, so that the height of the positioning fixture can be raised or lowered, while the conveying height of the roller bed remains unchanged. This solution ensures that the car body is transported at the same level throughout the entire area, which can save time and improve efficiency. At the same time, the working height of the production line is at a lower level, reducing production costs and facilitating installation, maintenance and production.

[0051] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A liftable base plate positioning system for a general assembly station, characterized in that: It comprises a base frame (1), a support frame (2), a lifting platform (3), a lifting component (4) and a height locking component (5); The bottom plate frame (1) is installed on the ground and arranged on both sides of the roller bed in a distributed structure. The bottom plate frame (1) in a distributed structure is composed of two bottom plate frame bodies distributed on both sides of the roller bed. The support frame (2) is arranged inside the base frame (1) and is used to support the roller bed. The lifting platform (3) is arranged on both sides of the roller bed in a distributed structure and is used to carry the positioning fixture. The lifting assembly (4) is installed on the supporting frame (2) and is connected to the lifting platform (3) in a transmission manner, and is used to drive the lifting platform (3) to move up and down. The height locking assembly (5) is used to lock the lifting platform (3) at the highest position; When the positioning fixture of a certain workstation will hinder the transportation of the vehicle body, the system is used to carry the positioning fixture of the workstation via the lifting platform (3), so that the height of the positioning fixture can be raised or lowered, while the conveying height of the roller bed remains unchanged; The lifting assembly (4) is composed of a rotary lifting mechanism and a linear guide rail (46); the rotary lifting mechanism is composed of a motor (41), a reducer (42), a rocker arm (43), a guide wheel (44) and a slide groove (45); the motor (41) and the reducer (42) are transmission-connected and fixed to the support frame (2); one end of the rocker arm (43) is connected to the output shaft of the reducer (42); the guide wheel (44) is arranged at the other end of the rocker arm (43); the slide groove (45) is horizontally arranged on the lifting platform (3); the guide wheel (44) is located in the slide groove (45) and can roll along the length direction of the slide groove (45); the linear guide rail (46) is a vertical guide rail, which is slidably connected to the lifting platform (3); The lifting platform (3) adopts a decentralized structure and is composed of two lifting frames (31) arranged on both sides of a roller bed, each lifting frame (31) is provided with a slide groove (45); the electric motor (41) and the reducer (42) connected in transmission are located between the two lifting frames (31), and the reducer (42) is a double-output shaft reducer, each output shaft of the reducer (42) is connected to a rocker arm (43), each rocker arm (43) is provided with a guide wheel (44), and the two guide wheels (44) are respectively matched and connected with the slide grooves (45) on the two lifting frames (31).

2. A liftable base plate positioning system for a general assembly station according to claim 1, characterized in that: The slide groove (45) is horizontally fixed to the bottom of the lifting platform (3).

3. A liftable base plate positioning system for a general assembly station according to claim 1, characterized in that: The height locking assembly (5) comprises a sub-end (51) and a female end; the sub-end (51) is fixed to the outer side of the lifting platform (3) and is a fixed block having a locking socket; the female end comprises a locking rail (52), a locking slider (53), a locking plug (54) and a locking cylinder (55); the locking rail (52) is arranged on the base frame (1) and is located on the outer side of the lifting platform (3); the locking slider (53) is slidably connected to the locking rail (52) and can move along the locking rail (52) toward or away from the lifting platform (3); the locking cylinder (55) is fixed to the base frame (1) and is used to push the locking slider (53) to move; the locking plug (54) is arranged on the locking slider (53) and is used to be inserted into the locking socket when the lifting platform (3) is raised to the highest position, thereby locking the lifting platform (3) at the highest position.

4. The liftable base plate positioning system for the general assembly station according to claim 1 is characterized in that: It also includes a lifting guide assembly (6), the lifting guide assembly (6) consisting of a fixed part and a movable part that are slidably connected, the fixed part is arranged on the support frame (2), and the movable part is arranged on the lifting platform (3).

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