A positioning and centering mechanism applicable to the roofs of multiple car models

Abstract

This invention provides a car roof positioning and centering mechanism applicable to multiple car models, comprising: a main frame; a first head positioning component connected to the main frame for positioning the head of a first type of car roof in the X direction; a second head positioning component connected to the main frame, wherein part / all of the second head positioning component is linearly movable in the Z direction to position the head of a second type of car roof in the Z direction; and a rear positioning component connected to the main frame, wherein part / all of the rear positioning component is linearly movable in the X direction to position the rear of the first type of car roof / the rear of the second type of car roof in the X direction. This invention can position car roofs of different lengths, especially shorter ones, and eliminates the need for tilting the car roof, thus meeting the requirements of flexible production.

Description

Technical Field

[0001] This invention relates to the field of welding equipment for automobile manufacturing, and in particular to a positioning and centering mechanism suitable for the roofs of multi-model automobiles. Background Technology

[0002] With the rapid development of the automotive industry and the accelerating pace of vehicle model updates, there is a growing variety of car roof styles, such as those with sunroofs and those without. Furthermore, the welding of car roofs requires the use of alignment mechanisms.

[0003] Patent application number 202222174510.3, entitled "A Car Roof Centering Mechanism," discloses a mechanism for centering car roofs of different models. However, in this centering structure, the main frame and various supporting components connecting the main frame are all inclined. Therefore, when the car roof is placed on the centering mechanism, its positioning is difficult. In addition, after the car roof is placed on the centering mechanism, the whole car roof is also in an inclined state, which makes it easy for it to slip off the main frame, causing production accidents.

[0004] Furthermore, the aforementioned centering mechanism can only center and position long car roofs, but cannot position roofs that are too short, thus failing to meet the needs of flexible production. Summary of the Invention

[0005] The purpose of this invention is to provide a positioning and centering mechanism applicable to car roofs of various models. It can position car roofs of different lengths, especially those with shorter lengths. At the same time, it does not require the car roof to be placed at an angle, thus reducing the difficulty of positioning. It avoids safety accidents caused by the roof slipping and meets the requirements of flexible production.

[0006] This invention provides a car roof alignment mechanism, comprising:

[0007] Main framework;

[0008] A first head positioning component, which is connected to the main frame, is used to position the head of the first type of car roof in the X direction.

[0009] A second head positioning component is connected to the main frame, and part / all of the second head positioning component is linearly movable in the Z direction to position the head of the second type of car roof in the Z direction.

[0010] The rear positioning component is connected to the main frame, and part / all of the rear positioning component is linearly movable in the X direction, for defining the position of the rear of the first type of car roof / the rear of the second type of car roof in the X direction.

[0011] Preferably, the length L1 of the first type of car roof is greater than the length L2 of the second type of car roof, and the value of L2 is in the range of [20%*L1, 60%*L1].

[0012] Preferably, the first head positioning component includes:

[0013] A first head positioning mounting base is connected to the main frame;

[0014] A first head positioning stop bar, which is connected to a first head positioning mounting seat, is used to position the head of a first type of vehicle roof in the X direction.

[0015] Preferably, the vehicle roof positioning and centering mechanism further includes:

[0016] A movable support assembly, which is connected to the main frame, and part / all of the movable support assembly is movable linearly in the Z direction to support the head and / or middle of the first type of vehicle roof in the Z direction.

[0017] Preferably, the vehicle roof positioning and centering mechanism further includes:

[0018] A bottom mounting base that connects to the main frame;

[0019] The drive unit is connected to the bottom mounting base;

[0020] A movable component that connects to the drive unit;

[0021] Adapter block, which connects the movable component;

[0022] And universal ball bearings, which connect to the adapter block;

[0023] The drive unit is used to drive the moving part, the adapter block, and the universal ball to move synchronously in the Z direction, so that the universal ball contacts the head / middle of the first type of car roof, thereby supporting the head / middle of the first type of car roof.

[0024] Preferably, there are several sets of movable support components, and at least one set of movable support components is used to support the head of the first type of vehicle roof, and at least one set of movable support components is used to support the middle of the first type of vehicle roof.

[0025] Preferably, the tail positioning component includes:

[0026] X-axis slide, which extends along the X direction;

[0027] X-axis sliding mounting base, which slides in cooperation with the X-axis slide table;

[0028] The first tail positioning adapter is connected to the X-direction sliding mounting base;

[0029] The first tail positioning drive unit is connected to the first tail positioning adapter.

[0030] The first tail positioning movable component is connected to the first tail positioning drive component;

[0031] The first tail ball joint is connected to the first tail positioning movable part;

[0032] The first tail universal ball bearing is connected to the first tail ball bearing adapter block;

[0033] And the tail stop bar, which is connected to the first tail positioning movable part;

[0034] The X-direction sliding mounting seat is used to drive the first tail universal ball and the tail stop bar to move along the X direction; the first tail positioning drive is used to drive the first tail positioning movable part to move in the Z direction, so that the first tail universal ball contacts the tail of the first type of car roof / the tail of the second type of car roof, thereby supporting the tail of the first type of car roof / the tail of the second type of car roof.

[0035] Furthermore, the rear stop bar 411 is used to position the rear of the first type of car roof / the rear of the second type of car roof in the X direction.

[0036] Preferably, the tail positioning component further includes:

[0037] The second tail positioning adapter is connected to the X-direction sliding mounting base;

[0038] The second tail positioning drive unit is connected to the second tail positioning adapter.

[0039] The second tail positioning movable component is connected to the second tail positioning drive component;

[0040] The second tail ball joint is connected to the second tail positioning movable part;

[0041] And a second tail universal ball bearing, which connects to a second tail ball bearing adapter block;

[0042] The X-direction sliding mounting seat is used to drive the second tail universal ball to move along the X direction; the second tail positioning drive is used to drive the second tail positioning movable part to move in the Z direction, so that the second tail universal ball contacts the middle of the second type of car roof, thereby supporting the middle of the second type of car roof.

[0043] Preferably, the tail positioning component includes:

[0044] The second head positioning mounting base is connected to the main frame;

[0045] The second head drive unit is connected to the second head positioning mount and has a power end;

[0046] And the second head positioning stop;

[0047] The second head drive member drives the second head positioning stop to move in the Z direction via its power end, so as to limit the position of the head of the second type of car roof in the X direction by means of the second head positioning stop.

[0048] Preferably, the side positioning component includes;

[0049] A Y-axis positioning mounting bracket is connected to the main frame;

[0050] A Y-axis slide, which extends along the Y-axis and is connected to the Y-axis positioning mounting base;

[0051] The Y-axis sliding seat slides in conjunction with the Y-axis slide table.

[0052] Y-direction stop bar, which is connected to the Y-direction sliding seat;

[0053] The Y-direction sliding seat is used to drive the Y-direction stop bar to move linearly along the Y direction, so as to limit the position of the side of the first type of car roof / the side of the second type of car roof in the Y direction by means of the Y-direction stop bar.

[0054] The technical effects of the present invention are as follows: The present invention has a simple, compact and reasonable structural design, which can position car roofs of different lengths, especially car roofs of shorter lengths (second type of car roof). At the same time, it does not require the car roof to be placed at an angle, thus reducing the difficulty of positioning, facilitating the installation, debugging and other processes, and avoiding safety accidents caused by the roof slipping, thus meeting the needs of flexible production. Attached Figure Description

[0055] Figure 1 This is an overall structural diagram of the positioning and centering mechanism in this invention;

[0056] Figure 2 This is a first-person perspective view of the positioning and centering mechanism in this invention with an A-type car roof placed on it.

[0057] Figure 3 This is a first-person perspective view of the positioning and centering mechanism in this invention with a D-shaped car roof placed on it.

[0058] Figure 4 This is an overall structural diagram of the first head positioning component in this invention;

[0059] Figure 5 This is an overall structural diagram of the movable support component in this invention;

[0060] Figure 6 This is an overall structural diagram of the tail positioning component in this invention;

[0061] Figure 7 This is an overall structural diagram of the second head positioning component in this invention;

[0062] Figure 8 This is an overall structural diagram of the side positioning component in this invention;

[0063] Figure 9 This is an overall structural diagram of the positioning pin assembly in this invention;

[0064] Figure 10 This is a schematic diagram from a second perspective showing the A-type car roof placed on the positioning and centering mechanism of the present invention.

[0065] Figure 11 This is a first-person perspective view of the positioning and centering mechanism in this invention with a B-type car roof placed on it.

[0066] Figure 12 This is a first-person perspective view of the positioning and centering mechanism in this invention with a C-shaped car roof placed on it.

[0067] Figure 13 This is a schematic diagram from a second perspective showing the C-shaped car roof placed on the positioning and centering mechanism of the present invention.

[0068] Figure 14 This is a schematic diagram from a second perspective showing the D-shaped car roof placed on the positioning and centering mechanism of the present invention. Detailed Implementation

[0069] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0070] Example 1:

[0071] like Figure 1-3 As shown, this embodiment provides a positioning and centering mechanism suitable for the roofs of multi-model automobiles, which includes:

[0072] The main frame 1 has a support base 101 and a worktable 102, wherein the worktable 102 is horizontally arranged;

[0073] The first head positioning component 2 is connected to the worktable 102 of the main frame 1 and is used to position the head of the first type of car roof P1 in the X direction.

[0074] The movable support assembly 3 is connected to the workbench 102 of the main frame 1, and part / all of the movable support assembly 3 can move linearly in the Z direction to support the head and / or middle of the first type of car roof P1 in the Z direction.

[0075] The second head positioning component 5 is connected to the worktable 102 of the main frame 1, and part / all of the second head positioning component 5 can move linearly in the Z direction to define the position of the head of the second type of car roof P2 in the Z direction.

[0076] The rear positioning component 4 is connected to the workbench 102 of the main frame 1, and part / all of the rear positioning component 4 can move linearly in the X direction, for defining the position of the rear of the first type of car roof P1 / the rear of the second type of car roof P2 in the X direction.

[0077] Side positioning component 6, which is connected to the worktable 102 of the main frame 1, and part / all of the side positioning component 6 can move linearly in the Y direction to define the position of the side of the first type of car roof P1 / the side of the second type of car roof P2 in the Y direction.

[0078] The positioning pin assembly 7 is connected to the worktable 102 of the main frame 1 and is used to cooperate with the roof gripping fixture to complete the positioning when gripping the car roof.

[0079] It should be noted that when the car roof is placed in the aforementioned positioning and centering mechanism, the leftmost part is the head, the rightmost part is the tail, and the part in between is the middle. Furthermore, the width direction of the car roof is the Y direction, the length direction is the X direction, and the height direction is the Z direction. Further, in this embodiment, the length L1 of the first type of car roof P1 is greater than the length L2 of the second type of car roof P2, where L1 ranges from [1.2m, 3.0m] (preferably [1.5m, 2.8m]), and L2 ranges from [20%*L1, 60%*L1] (preferably [30%*L1, 50%*L1]). Both the first type of car roof P1 and the second type of car roof P2 can be used in the design and manufacture of different car models such as sedans, SUVs, and MPVs.

[0080] Specifically, such as Figure 4 As shown, the first head positioning component 2 includes:

[0081] The first head positioning mounting base 201 is connected to the workbench 102 of the main frame 1;

[0082] The first head positioning stop 202 is connected to the first head positioning mounting seat 201 and is used to position the head of the first type of car roof P1 in the X direction.

[0083] like Figure 5 As shown, the active support component 3 includes:

[0084] The bottom mounting base 301 is connected to the workbench 102 of the main frame 1;

[0085] The drive unit 302 (including cylinders, hydraulic cylinders, motors, slides / rails, etc.) is connected to the bottom mounting base 301;

[0086] Movable component 303 is connected to the drive unit 302;

[0087] Adapter block 304, which connects to the movable part 303;

[0088] And a universal ball bearing 305, which is connected to the adapter block 304;

[0089] The drive unit 302 is used to drive the movable part 303, the adapter block 304, and the universal ball bearing 305 to move synchronously in the Z direction, so that the universal ball bearing 305 contacts the head / middle of the first type of car roof P1, thereby supporting the head / middle of the first type of car roof P1.

[0090] Preferably, the movable part 303 has two ends, and each end is connected to a corresponding adapter block 304, and each adapter block 304 is connected to a corresponding universal ball bearing 305.

[0091] At the same time, such as Figure 1 As shown, there are several sets of the first head positioning component 2 and the movable support component 3, such as two sets, and at least one set of movable support component 3 is located between the two sets of the first head positioning components 2 for supporting the head of the first type of car roof P1, and at least one set of movable support component 3 is located between the first head positioning component 2 and the tail positioning component 4 for supporting the middle of the first type of car roof P1.

[0092] Furthermore, such as Figure 6 As shown, the tail positioning component 4 includes:

[0093] Tail-end positioning adapter plate 412, which is connected to the workbench 102 of the main frame 1;

[0094] X-axis slide 401 extends along the X direction and is connected to the tail positioning adapter plate 412;

[0095] The X-axis sliding mounting base 402 is slidably engaged with the X-axis slide table 401 and slides linearly along the X-axis slide table 401 in the X direction under the drive of the X-axis drive assembly D1 (such as a motor, cylinder, etc.).

[0096] The first tail positioning adapter 403 is connected to the X-direction sliding mounting base 402;

[0097] The first tail positioning drive 405 is connected to the first tail positioning adapter 403.

[0098] The first tail positioning movable component 407 is connected to the first tail positioning drive component 405;

[0099] The first tail ball joint 413 is connected to the first tail positioning movable part 407.

[0100] The first tail universal ball bearing 409 is connected to the first tail ball bearing adapter block 413;

[0101] And the tail stop 411, which is connected to the first tail positioning movable part 407;

[0102] The X-direction sliding mounting seat 402 is used to drive the first tail positioning adapter 403, the first tail positioning drive 405, the first tail positioning movable part 407, the first tail ball adapter 413, the first tail universal ball 409, and the tail stop bar 411 to move as a whole along the X direction. After moving to the predetermined position, the first tail positioning drive 405 drives the first tail positioning movable part 407 to move in the Z direction, so that the first tail universal ball 409 contacts the tail of the first type of car roof P1 / the tail of the second type of car roof P2, thereby supporting the tail of the first type of car roof P1 / the tail of the second type of car roof P2. At the same time, the tail stop bar 411 limits the position of the tail of the first type of car roof P1 / the tail of the second type of car roof P2 in the X direction.

[0103] Similarly, there can be multiple first tail universal ball bearings 409. For example, the first tail universal ball bearings 409 can be correspondingly disposed at the two ends of the first tail positioning movable member 407. The structure of the first tail positioning drive member 405 is the same as that of the drive unit 302, including components such as cylinder, hydraulic cylinder, motor, slide table / slide rail, etc.

[0104] Therefore, the rear positioning component 4 in this embodiment can simultaneously achieve X-direction positioning and Z-direction positioning support for the rear of the car roof. Meanwhile, in the prior art with application number 202222174510.3 and patent title "A Car Roof Centering Mechanism," the second X-direction positioning block requires a large stroke to cooperate with the first X-direction positioning block to complete the X-direction positioning of the roof. However, this positioning method is only suitable for longer roofs (such as the first type of car roof P1), and because the second X-direction positioning block has an excessively long stroke, it is time-consuming and prone to failure. In contrast, this application provides a second head positioning component 5, which can be used in conjunction with the rear positioning component 4. The rear positioning component 4 does not need to travel a long distance to cooperate with the second head positioning component 5 to complete the X-direction positioning of shorter roofs (such as the second type of car roof P2).

[0105] like Figure 7 As shown, the second head positioning component 5 includes:

[0106] The second head positioning mounting base 501 is connected to the workbench 102 of the main frame 1;

[0107] The second head drive component 502 is connected to the second head positioning mounting base 501 and has a power end 503; in this embodiment, the second head drive component 502 includes a cylinder.

[0108] End plate 504, which is connected to the power end 503;

[0109] Adapter block 505, which is connected to end plate 504;

[0110] The second head positioning stop 506 is connected to the adapter block 505;

[0111] Limiting block support 507, which is connected to the second head positioning adapter 501;

[0112] The limiting block 508, which is connected to the limiting block support 507, is used to limit the movement stroke of the power end 503, so as to limit the movement distance of the second head positioning stop 506.

[0113] The second head drive member 502 drives the second head positioning stop 506 to move in the Z direction via its power end 503, so as to limit the position of the head of the second type of car roof P2 in the X direction by means of the second head positioning stop 506.

[0114] In this embodiment, there may be multiple sets of the second head positioning component 5. Each set of the second head positioning component 5 is located between the first head positioning component 2 and the tail stop bar 411, and at least one set of the second head positioning component 5 is provided on each side of the tail positioning component 4.

[0115] like Figure 8 As shown, the side positioning component 6 includes;

[0116] Y-direction positioning mounting base 601, which is connected to the workbench 102 of the main frame 1;

[0117] Y-axis slide 602 extends along the Y-axis and is connected to the Y-axis positioning mounting base 601;

[0118] Y-axis sliding seat 603 is slidably engaged with the Y-axis slide table 602, and slides linearly along the Y-axis slide table 602 in the Y direction under the drive of the Y-axis drive assembly D2 (such as a motor, cylinder, etc.).

[0119] Y-direction stop 604, which is connected to the Y-direction sliding seat 603;

[0120] The Y-direction sliding seat 603 is used to drive the Y-direction stop 604 to move linearly along the Y direction, so as to limit the position of the side of the first type of car roof P1 / the side of the second type of car roof P2 in the Y direction by means of the Y-direction stop 604.

[0121] In this embodiment, at least one set of Y-direction positioning components 6 is provided on each side of the rear positioning component 4. Preferably, several sets (e.g., 3 sets) of Y-direction positioning components 6 are provided on each side of the rear positioning component 4, and the several sets of Y-direction positioning components 6 on the same side are arranged along the X direction to perform Y-direction positioning on different parts of the side of the car roof respectively. At the same time, one or more of the first head positioning stop bar 202, the rear stop bar 411, the second head positioning stop bar 506, and the Y-direction stop bar 604 are round bars, which makes it easier for the car roof to fall when it comes into contact with the above-mentioned stop bars.

[0122] The positioning pin assembly 7 provides a positioning and mating reference for the roof-grabbing fixture (such as various gripping robots) during gripping, enabling the roof-grabbing fixture to accurately grip the car roof. Specifically, for example... Figure 9 As shown, the positioning pin assembly 7 includes:

[0123] Positioning pin mounting base 701, which is connected to the worktable 102 of the main frame 1;

[0124] Positioning pin seat 702, which is connected to the top of the positioning pin mounting seat 701;

[0125] And a positioning pin 703, which is connected to the positioning pin seat 702.

[0126] Furthermore, in this embodiment, the positioning pin assembly 7 may have several sets, such as one set disposed on one side of the rear positioning assembly 4, and two sets disposed on the other side of the rear positioning assembly 4, etc., to cooperate with the roof gripping fixture to complete the gripping of the first type of car roof P1 / the second type of car roof P2.

[0127] Therefore, the centering mechanism in this embodiment has a simple structural design, which can position car roofs of different lengths, especially shorter car roofs (second type car roof P2). At the same time, it does not require the car roof to be placed at an angle, thus reducing the difficulty of positioning and avoiding safety accidents caused by the roof slipping. It also facilitates the processes of mounting and debugging.

[0128] Example 2:

[0129] The only difference between this embodiment and Embodiment 1 is that, Figure 6 As shown, the tail positioning component 4 further includes:

[0130] The second tail positioning adapter 404 is connected to the X-direction sliding mounting base 402;

[0131] The second tail positioning drive 406 is connected to the second tail positioning adapter 404.

[0132] The second tail positioning movable part 408 is connected to the second tail positioning drive part 406.

[0133] The second tail ball joint 414 is connected to the second tail positioning movable part 408.

[0134] And the second tail universal ball 410, which is connected to the second tail ball adapter block 414;

[0135] The X-direction sliding mounting seat 402 is used to drive the second tail positioning adapter seat 404, the second tail positioning drive member 406, the second tail positioning movable member 408, the second tail ball adapter block 414, and the second tail universal ball 410 to move as a whole along the X direction. After moving to the predetermined position, the second tail positioning drive member 406 drives the second tail positioning movable member 408 to move in the Z direction, so that the second tail universal ball 410 contacts the middle of the second type of car roof P2, thereby supporting the middle of the second type of car roof P2.

[0136] Similarly, there can be multiple second tail universal balls 410. For example, each second tail universal ball 410 can be correspondingly disposed at both ends of the second tail positioning movable member 408. The structure of the second tail positioning drive member 406 is the same as that of the drive unit 302, including components such as cylinders, hydraulic cylinders, motors, and slides / rails. Meanwhile, the first tail universal balls 409 are disposed away from the head positioning component 2 relative to the second tail universal balls 410, that is, the second tail universal balls 410 are located between the first tail universal balls 409 and the head positioning component 2.

[0137] The following are schemes for centering and positioning four types of car roofs (Type A, Type B, and Type C) using the centering mechanism of the present invention. The lengths of Type A (with sunroof), Type B (without sunroof), and Type C (without sunroof) are all L1, and the length of Type D (without sunroof) is L2.

[0138] 1. For example Figure 2 As shown in Figure 10, the X-axis sliding mounting base 402 is driven to move linearly along the X-axis according to the length of the A-type ceiling until the first tail universal ball 409 and the tail stop bar 411 reach the predetermined position. Then, the first tail positioning movable part 407 drives the tail stop bar 411 and the first tail universal ball 409 to move synchronously in the Z-axis until the predetermined height position is reached.

[0139] The robot gripper picks up the A-type car roof from the material cart platform, moves it to the predetermined position and places it in place. The car roof falls into place under the action of gravity, so that in the X direction, the head of the car roof is limited by the first head positioning stop 202 of the first head positioning component 2 and the tail is limited by the tail stop 411 (the tail is also made by the first tail universal ball 409) to complete the X-direction limitation.

[0140] Then the Y-direction sliding seats 603 of the side positioning components 6 on both sides of the roof slide along the Y direction, and the Y-direction stop bar 604 limits the position of the sides of the head, middle and rear of the car roof to complete the Y-direction limit.

[0141] Finally, the universal ball bearing 305 and the second universal ball bearing 410 of the movable support component 3 at the head move along the Z direction to support the head and rear of the car roof. Since the A-type roof has a sunroof in the middle, the movable support component 3 in the middle does not need to move and there is no need for middle support.

[0142] 2. The only difference between the positioning methods of Type B and Type A ceilings is that Type B ceilings have skylights, therefore... Figure 11As shown, the universal ball bearing 305 of the movable support component 3 at the head, the universal ball bearing 305 of the movable support component 3 in the middle, and the universal ball bearing 410 at the second tail all need to move along the Z direction to support the head, middle, and tail of the car roof respectively.

[0143] 3. The only difference between the positioning methods of Type C and Type B ceilings is that, since the length of Type C ceilings is shorter than that of Type A and Type B ceilings, therefore... Figure 12-13 As shown, it is only necessary to control the side positioning components 6 corresponding to the head and middle of the car roof to move, so that the Y-direction sliding seat 603 slides along the Y direction, and the Y-direction stop bar 604 limits the position of the sides of the head and middle of the car roof, thus completing the Y-direction limit. There is no need to make the side positioning components 6 corresponding to the rear of the car roof move.

[0144] 4. The length of the D-type car roof is the shortest among the four types of roofs. Therefore, during positioning, only the second head positioning component 5 and the rear positioning component 4 are needed to complete the positioning.

[0145] Specifically, such as Figure 3 As shown in Figure 13, firstly, the second head drive member 502 drives the second head positioning stop 506 to move upward in the Z direction through its power end 503 until it reaches the predetermined position.

[0146] Then, based on the length of the D-shaped ceiling, the X-direction sliding mounting base 402 is driven to move linearly along the X-direction until the first tail universal ball 409 and the tail stop bar 411 reach the predetermined position. Then, the first tail positioning movable part 407 drives the tail stop bar 411 and the first tail universal ball 409 to move synchronously in the Z-direction until the predetermined height position is reached.

[0147] The robot gripper picks up the D-shaped car roof from the material cart platform, moves it to the predetermined position and places it in place. The car roof falls into place under the action of gravity, so that in the X direction, the head of the car roof is limited by the second head positioning stop 506 and the tail is limited by the tail stop 411 (the tail is also made by the first tail universal ball 409) to complete the X-direction limitation.

[0148] Then the Y-direction sliding seat 603 of the side positioning component 6 corresponding to the rear of the roof slides along the Y direction, and the Y-direction stop bar 604 limits the position of the side of the rear of the car roof to complete the Y-direction limit.

[0149] Finally, the second tail omnidirectional ball bearing 410 moves along the Z direction to support the middle of the car roof.

[0150] In summary, the car roof centering mechanism of the present invention is simple, compact, and rationally laid out, with no interference between the components. It can position car roofs of different lengths, especially shorter car roofs (second type car roof P2). At the same time, it does not require the car roof to be placed at an angle, thus reducing the difficulty of positioning. It avoids safety accidents caused by the roof slipping and meets the requirements of flexible production.

[0151] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0152] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A car roof positioning and centering mechanism applicable to multiple car models, characterized in that, The automobile roof positioning and centering mechanism comprises a main frame, a first head positioning assembly connected to the main frame and used for positioning a head of a first type automobile roof in an X direction, a second head positioning assembly connected to the main frame and part / whole of the second head positioning assembly being linearly movable in a Z direction to position a head of a second type automobile roof in the Z direction, and a tail positioning assembly connected to the main frame and part / whole of the tail positioning assembly being linearly movable in the X direction to position a tail of the first type automobile roof / the tail of the second type automobile roof in the X direction. The length L1 of the first type automobile roof is greater than the length L2 of the second type automobile roof, and the value range of L2 is [20%*L1, 60%*L1], and neither the first head positioning assembly nor the second head positioning assembly is linearly movable in the X direction. The tail positioning assembly comprises an X direction sliding table extending in the X direction, an X direction sliding mounting base in sliding cooperation with the X direction sliding table, a first tail positioning adapter connected to the X direction sliding mounting base, a first tail positioning driving member connected to the first tail positioning adapter, a first tail positioning movable member connected to the first tail positioning driving member, a first tail ball adapter connected to the first tail positioning movable member, a first tail universal ball connected to the first tail ball adapter, a tail stopper connected to the first tail positioning movable member, a second tail positioning adapter connected to the X direction sliding mounting base, a second tail positioning driving member connected to the second tail positioning adapter, a second tail positioning movable member connected to the second tail positioning driving member, a second tail ball adapter connected to the second tail positioning movable member, and a second tail universal ball connected to the second tail ball adapter. The X direction sliding mounting base is used to drive the first tail universal ball and the tail stopper to move in the X direction as a whole, the first tail positioning driving member is used to drive the first tail positioning movable member to move in the Z direction so that the first tail universal ball is in contact with the tail of the first type automobile roof / the tail of the second type automobile roof to support the tail of the first type automobile roof / the tail of the second type automobile roof, and the tail stopper is used to position the tail of the first type automobile roof / the tail of the second type automobile roof in the X direction. The X direction sliding mounting base is used to drive the second tail universal ball to move in the X direction, and the second tail positioning driving member is used to drive the second tail positioning movable member to move in the Z direction so that the second tail universal ball is in contact with the middle part of the second type automobile roof to support the middle part of the second type automobile roof. The first head positioning assembly comprises a first head positioning mounting base connected to the main frame, and a first head positioning stopper connected to the first head positioning mounting base and used for positioning the head of the first type automobile roof in the X direction. The automobile roof positioning and centering mechanism further comprises ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The automotive headliner positioning and centering mechanism as claimed in claim 1, wherein, ​ ​ ​ 3. The automotive headliner positioning and centering mechanism as defined in claim 1 wherein, ​ A movable support assembly is connected to the main frame, and part / whole of the movable support assembly can move linearly in the Z direction to support the head and / or middle part of the first type of automobile roof in the Z direction.

4. The automotive headliner positioning and centering mechanism as defined in claim 3, wherein, The movable support assembly comprises: a bottom mounting base connected to the main frame; a driving unit connected to the bottom mounting base; a movable element connected to the driving unit; an adapter block connected to the movable element; and a universal ball connected to the adapter block. The driving unit is used to drive the movable element, adapter block, and universal ball to move synchronously in the Z direction, so that the universal ball contacts the head / middle part of the first type of automobile roof to support the head / middle part of the first type of automobile roof.

5. The automotive headliner positioning and centering mechanism as defined in claim 3 wherein, There are several groups of movable support assemblies, and at least one group of movable support assemblies is used to support the head of the first type of automobile roof, and at least one group of movable support assemblies is used to support the middle part of the first type of automobile roof.

6. The automotive headliner positioning and centering mechanism as defined in claim 1 wherein, The tail positioning assembly comprises: a second head positioning mounting base connected to the main frame; a second head driving element connected to the second head positioning mounting base and having a power end; and a second head positioning stopper. The second head driving element drives the second head positioning stopper to move in the Z direction through the power end, so as to position the head of the second type of automobile roof in the X direction through the second head positioning stopper.

7. The automotive headliner positioning and centering mechanism as defined in claim 1 wherein, The automobile roof positioning and centering mechanism further comprises a side positioning assembly, and the side positioning assembly comprises: a Y-direction positioning mounting base connected to the main frame; a Y-direction sliding table extending in the Y direction and connected to the Y-direction positioning mounting base; a Y-direction sliding seat in sliding cooperation with the Y-direction sliding table; a Y-direction stopper connected to the Y-direction sliding seat; The Y-direction sliding seat is used to drive the Y-direction stopper to move linearly in the Y direction as a whole, so as to position the side of the first type of automobile roof or the side of the second type of automobile roof in the Y direction through the Y-direction stopper.

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