Automobile body top cover rack mechanism for automobile welding

Abstract

The utility model belongs to the technical field of automobile manufacturing, and particularly relates to an automobile body top cover rack mechanism for automobile welding, which comprises a rack, guide rail units and a lifting unit, the left side and the right side of the rack are respectively provided with one guide rail unit, a feeding area is arranged between the two guide rail units, and the lifting unit is arranged in the feeding area; the automobile body top cover material frame mechanism for automobile welding further comprises a first positioning mechanism which is located on the rack and located at the rear end of the feeding area and is provided with a first clamping air cylinder. The supporting bracket is arranged on the rack; and the second positioning mechanism is arranged on the supporting bracket, is positioned above the left side or the right side of the feeding area, and is provided with a second clamping cylinder capable of performing left-right telescopic motion. According to the positioning device, the vehicle body top cover material frame can be well positioned, it is guaranteed that a vehicle body top cover does not deviate and rotate when a robot takes a workpiece, the workpiece grabbing stability of the robot is improved, normal installation of workpieces can be guaranteed, and practicability is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile manufacturing, and in particular relates to a body top cover material rack mechanism for automobile welding. Background Art

[0002] During the automobile welding process, the feeding of the body roof is usually achieved by the body roof rack mechanism. The body roof rack mechanism has a guide rail unit and a lifting unit. The roof rack trolley brings several stacked body roofs along the guide rail unit to the rack, and the lifting unit acts to convert the body roof from a low position to a high position, making it easier for the robot to grab the parts. In this way, during the lifting operation, the position of the body roof is easily offset and rotated, thereby affecting the accuracy of the robot's grasping of the parts and being unfavorable for subsequent installation. If a high-precision robot with position recognition is used, it will undoubtedly increase production costs and reduce production rhythm. Utility Model Content

[0003] The utility model aims to provide a body roof material rack mechanism for automobile welding, aiming at the technical problem that the existing body roof material rack mechanism is prone to offset and rotate due to the position of the body roof during lifting operation, thereby affecting the accuracy of robot grasping parts.

[0004] In order to solve the above technical problems, the utility model provides a body roof material rack mechanism for automobile welding, the body roof material rack mechanism for automobile welding comprises a frame, a guide rail unit and a lifting unit, one guide rail unit is respectively arranged on the left and right sides of the frame, a loading area is between the two guide rail units, and the lifting unit is arranged in the loading area;

[0005] The vehicle body roof material rack mechanism for automobile welding also includes:

[0006] A first positioning mechanism, the first positioning mechanism is located on the frame and at the rear end of the loading area, and the first positioning mechanism has a first clamping cylinder;

[0007] A supporting bracket, wherein the supporting bracket is arranged on the frame;

[0008] The second positioning mechanism is arranged on the supporting bracket and is located above the left side or the right side of the loading area. The second positioning mechanism has a second clamping cylinder that can perform left and right telescopic movement.

[0009] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, the first positioning mechanism further comprises:

[0010] A first positioning bracket, wherein the first positioning bracket is arranged on the frame, and the first clamping cylinder is arranged on the first positioning bracket;

[0011] A first positioning proximity switch, which is disposed on the first positioning bracket and located above the first clamping cylinder, and a sensing surface of the first positioning proximity switch faces the front end;

[0012] The first positioning clamp block is connected to the first clamping cylinder via the first positioning connecting block, and the first clamping cylinder drives the first positioning clamp block to rotate in the left and right directions in front of the first positioning proximity switch.

[0013] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, a plurality of positioning adjustment gaskets are provided between the first positioning clamping block and the first positioning connecting block.

[0014] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, the first positioning mechanism further comprises:

[0015] The first positioning buffer block is arranged on the first positioning bracket and is located at the side of the first positioning proximity switch, and the buffer surface of the first positioning buffer block faces the front end.

[0016] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, a plurality of positioning adjustment gaskets are provided between the first positioning buffer block and the first positioning bracket.

[0017] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, the first positioning mechanism further comprises:

[0018] The first positioning abutment block is arranged on the first positioning bracket and is located at the side of the first positioning buffer block, and the abutment surface of the first positioning abutment block faces the front end.

[0019] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, there are two first positioning mechanisms, and the two first positioning mechanisms are arranged at a preset distance in the left-right direction at the rear end of the loading area.

[0020] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, the second positioning mechanism further comprises:

[0021] A second positioning cylinder, wherein the second positioning cylinder is arranged on the supporting bracket, and the axial direction of the piston rod of the second positioning cylinder is in the left-right direction;

[0022] The second positioning connecting plate is connected to the piston rod of the second positioning cylinder. The second positioning connecting plate is driven by the second positioning cylinder to perform left and right telescopic movement. The second positioning connecting plate is provided with the second clamping cylinder.

[0023] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, the second positioning mechanism is a detection type positioning mechanism, and the detection type positioning mechanism further has:

[0024] A second positioning proximity switch, the second positioning proximity switch is arranged on the second positioning connecting plate and is located on the side of the second clamping cylinder, and the sensing surface of the second positioning proximity switch faces upward;

[0025] The second positioning clamp block is connected to the second clamping cylinder, and the second clamping cylinder drives the second positioning clamp block to rotate around the front-rear direction on the side of the second positioning proximity switch.

[0026] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, a plurality of positioning adjustment gaskets are provided between the second positioning clamp block and the second clamping cylinder.

[0027] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, the detection type positioning mechanism further comprises:

[0028] A second positioning buffer block is arranged on the second positioning connecting plate and is located below the second clamping cylinder, and a buffer surface of the second positioning buffer block faces upward.

[0029] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, a plurality of positioning adjustment gaskets are provided between the second positioning buffer block and the second positioning connecting plate.

[0030] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, the second positioning mechanism is a position-limiting positioning mechanism, and the position-limiting positioning mechanism further has:

[0031] A second limiting pin, the second limiting pin is arranged on the second positioning connecting plate and is located below the second clamping cylinder, and the limiting portion of the second limiting pin faces upward;

[0032] The second limiting clamp block is connected to the second clamping cylinder, and the second limiting clamp block is driven by the second clamping cylinder to rotate around the front-rear direction above the second limiting pin.

[0033] Optionally, in the vehicle body roof material rack mechanism for automobile welding as described above, the second limit clamp block has a limit connection portion and a limit abutment portion that are integrally connected, the limit connection portion is connected to the second clamping cylinder, the cross-section of the limit abutment portion is a U-shaped structure, the limit abutment portion is located above the second limit pin, and the open structure in the middle of the limit abutment portion is an avoidance groove for the second limit pin.

[0034] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, the position limiting positioning mechanism further comprises:

[0035] A second limiting buffer block is arranged on the second positioning connecting plate and is located on the side of the second limiting pin, and a buffer surface of the second limiting buffer block faces upward.

[0036] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, a plurality of positioning adjustment gaskets are provided between the second limiting buffer block and the second positioning connecting plate.

[0037] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, there are two support brackets, and the two support brackets are respectively arranged on the left and right sides of the rack;

[0038] There are four second positioning mechanisms, and one second positioning mechanism is respectively arranged on one of the support brackets along the front-to-back direction.

[0039] Optionally, in the body roof material rack mechanism for automobile welding as described above, the four second positioning mechanisms are two detection type positioning mechanisms and two limit type positioning mechanisms, and each of the supporting brackets is respectively provided with one detection type positioning mechanism and one limit type positioning mechanism in the front-to-back direction, and the four positioning mechanisms on the two supporting brackets are centrally symmetrical structures.

[0040] Optionally, in the aforementioned vehicle body roof material rack mechanism for automobile welding, the vehicle body roof material rack mechanism for automobile welding further includes a product detection device, and the product detection device has:

[0041] A detection bracket, wherein the detection bracket is arranged on the supporting bracket;

[0042] A lower photoelectric switch, wherein the lower photoelectric switch is arranged at the lower part of the detection bracket, and the sensing surface of the lower photoelectric switch faces the loading area;

[0043] A plurality of upper photoelectric switches are arranged side by side at a preset distance in the up-down direction on the upper part of the detection bracket, and the sensing surfaces of the upper photoelectric switches face the loading area.

[0044] The positive progressive effect of the utility model is that the utility model can well position the body roof material rack by adding a first positioning mechanism and a second positioning mechanism on the basis of the existing body roof material rack, ensuring that the body roof does not deviate or rotate when the robot picks up the parts, thereby ensuring the stability of the robot's grasping of the parts, ensuring that the workpieces can be installed normally, and effectively improving the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The disclosure of the present invention will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0046] Figure 1 (a) is a schematic diagram of an overall structure of the utility model;

[0047] FIG. 1( b ) is a schematic diagram of a state when the top cover material rack trolley in FIG. 1( a ) is provided;

[0048] FIG2( a ) is a schematic diagram of a state of the lifting unit in FIG1( a ) after lifting;

[0049] FIG2(b) is a schematic diagram of a state in which the vehicle body roof material rack is located at a high position when the roof material rack trolley is provided in FIG2(a);

[0050] Figure 3 It is a structural schematic diagram of the first positioning mechanism of the utility model;

[0051] Figure 4 for Figure 3 Schematic diagram from another angle;

[0052] Figure 5 A structural schematic diagram of the second positioning mechanism of the utility model;

[0053] Figure 6 for Figure 5 Schematic diagram from another angle;

[0054] Figure 7 Another structural schematic diagram of the second positioning mechanism of the utility model;

[0055] Figure 8 for Figure 7 Schematic diagram from another angle;

[0056] Fig. 9 The utility model is a structural schematic diagram of a product detection device. DETAILED DESCRIPTION

[0057] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0058] It should be noted that the following embodiments and features therein may be combined with each other if there is no conflict.

[0059] In the description of the present invention, it should be noted that directional words such as the terms "outside", "middle", "inside", "outside", etc., which indicate directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0061] Reference Figure 1(a) to Figure 2(b) The utility model provides a body roof material rack mechanism for automobile welding, which comprises a frame 1, a guide rail unit 2, a lifting unit 3, a first positioning mechanism 4, a supporting bracket 5 and a second positioning mechanism 6.

[0062] A guide rail unit 2 is provided on each of the left and right sides of the frame 1, and a loading area is provided between the two guide rail units 2, and a lifting unit 3 is provided in the loading area. When in use, the top cover rack trolley moves a plurality of stacked body top covers along the guide rail unit 2 to the loading area, and the lifting unit 3 acts to convert the body top covers from the low position shown in FIG. 1(b) to the high position shown in FIG. 2(b), so as to facilitate the robot to grasp the parts.

[0063] The guide rail unit 2 and the lifting unit 3 are both prior art and will not be described in detail here.

[0064] Reference Figure 1(a) to Figure 4 The first positioning mechanism 4 is located on the frame 1 and at the rear end of the loading area. The first positioning mechanism 4 has a first clamping cylinder 41. When the top cover material rack trolley brings a plurality of stacked body top covers along the guide rail unit 2 to the loading area, the first clamping cylinder 41 is activated to hook the material rack at the front end thereof to realize the positioning of the rear end of the material rack.

[0065] Reference Figure 1(a) to Figure 2(b) , the support bracket 5 is arranged on the frame 1. The support bracket 5 can be detachably connected to the frame 1 by using a plurality of bolts.

[0066] Reference Figure 1(a) to Figure 2(b) , Figures 5 to 8The second positioning mechanism 6 is arranged on the support bracket 5 and is located above the left side or the right side of the loading area. The second positioning mechanism 6 has a second clamping cylinder 61 that can perform left and right telescopic movements. When the lifting unit 3 acts to convert the vehicle body roof from a low position to a high position, the second clamping cylinder 61 extends, and the second clamping cylinder 61 is actuated to clamp the material rack boss on the left or right side thereof, thereby realizing positioning of the material rack around.

[0067] The utility model can well position the vehicle body roof cover material rack by adding a first positioning mechanism and a second positioning mechanism on the basis of the existing vehicle body roof cover material rack, ensuring that the vehicle body roof cover does not deviate and rotate when the robot picks up the parts, thereby ensuring the stability of the robot's grasping of the parts, ensuring that the workpieces can be installed normally, and effectively improving the practicality.

[0068] In some embodiments, the first clamping cylinder 41 rotates around the left and right directions at an angle ranging from 5° to 105°.

[0069] In some embodiments, reference Figure 3 and Figure 4 The first positioning mechanism 4 also has a first positioning bracket 42 , a first positioning proximity switch 43 , a first positioning clamping block 44 and a first positioning connecting block 45 .

[0070] The first positioning bracket 42 is arranged on the frame 1, and the first clamping cylinder 41 is arranged on the first positioning bracket 42. The first positioning proximity switch 43 is arranged on the first positioning bracket 42 and is located above the first clamping cylinder 41, and the sensing surface of the first positioning proximity switch 43 faces the front end. The first positioning clamping block 44 is connected to the first clamping cylinder 41 via the first positioning connecting block 45, and the first clamping cylinder 41 drives the first positioning clamping block 44 to rotate in the left and right directions in front of the first positioning proximity switch 43.

[0071] In this embodiment, when the top cover material rack trolley carries several stacked body top covers along the guide rail unit 2 to the loading area, the sensing surface of the first positioning proximity switch 43 abuts against the material rack. At this time, the material rack is sensed, and the first clamping cylinder 41 drives the first positioning clamp block 44 to rotate in the left and right directions, hooking the material rack between the first positioning proximity switch 43 and the first positioning clamp block 44, thereby realizing the clamping and positioning function of the material rack.

[0072] In some embodiments, the first positioning connection block 45 is an L-shaped connection block, the horizontal section of the first positioning connection block 45 is connected to the first clamping cylinder 41 , and the rear side of the vertical section of the first positioning connection block 45 is connected to the first positioning clamping block 44 .

[0073] In some embodiments, a plurality of positioning adjustment pads are provided between the first positioning clamp block 44 and the first positioning connection block to adjust the force of the first positioning clamp block 44 when clamping the material rack.

[0074] In some embodiments, reference Figure 3 and Figure 4 The first positioning mechanism 4 also has a first positioning buffer block 46, which is disposed on the first positioning bracket 42 and located on the side of the first positioning proximity switch 43, and the buffer surface of the first positioning buffer block 46 faces the front end. When the material rack abuts against the sensing surface of the first positioning proximity switch 43, the first positioning buffer block 46 located on the side of the first positioning proximity switch 43 achieves a certain buffering effect.

[0075] In some embodiments, a plurality of positioning adjustment gaskets are disposed between the first positioning buffer block 46 and the first positioning bracket 42 to adjust the buffering force of the first positioning buffer block 46 .

[0076] In some embodiments, reference Figure 3 and Figure 4 The first positioning mechanism 4 also has a first positioning abutment block 47, which is disposed on the first positioning bracket 42 and located on the side of the first positioning buffer block 46, and the abutment surface of the first positioning abutment block 47 faces the front end. When the material rack abuts against the sensing surface of the first positioning proximity switch 43, the first positioning abutment block 47 also abuts against the rear end surface of the material rack on the side of the first positioning buffer block 46, playing an auxiliary buffering role.

[0077] In some embodiments, reference Figure 1(a) to Figure 2(b) There are two first positioning mechanisms 4, and the two first positioning mechanisms 4 are arranged at the rear end of the loading area at a preset distance along the left and right directions. The two first positioning mechanisms 4 can realize the clamping and positioning function of the left and right sides of the rear end of the material rack at the same time.

[0078] In some embodiments, reference Figure 1(a) to Figure 2(b) , Figures 5 to 8 The second positioning mechanism 6 also has a second positioning cylinder 62 and a second positioning connecting plate 63. The second positioning cylinder 62 is arranged on the supporting bracket 5, and the axial direction of the piston rod of the second positioning cylinder 62 is in the left-right direction. The second positioning connecting plate 63 is connected to the piston rod of the second positioning cylinder 62, and the second positioning cylinder 62 drives the second positioning connecting plate 63 to perform left-right telescopic movement, and the second positioning connecting plate 63 is provided with a second clamping cylinder 61.

[0079] The second positioning cylinder 62 in this embodiment realizes the purpose of the second clamping cylinder 61 to perform left and right telescopic movement.

[0080] In some embodiments, the second positioning mechanism 6 further comprises a second positioning rail and a second positioning slider. The second positioning rails are two in the front-to-back direction, and the length direction of the second positioning rails is the left-to-right direction and is arranged on the support bracket 5. The second positioning sliders are arranged in two rows on the bottom surface of the second positioning connecting plate 63, and the second positioning sliders in the front-to-back direction are slidably connected to the second positioning rails in their respective directions.

[0081] When the second positioning cylinder 62 drives the second positioning connecting plate 63 to perform telescopic movement to the left and right, the second positioning sliding block at the bottom end of the second positioning connecting plate 63 slides to the left and right along the second positioning guide rail.

[0082] In some embodiments, reference Figure 5 to Figure 6 The second positioning mechanism 6 is a detection type positioning mechanism, which also has a second positioning proximity switch 64 and a second positioning clamp 65. The second positioning proximity switch 64 is arranged on the second positioning connection plate 63 and is located on the side of the second clamping cylinder 61, and the sensing surface of the second positioning proximity switch 64 faces upward. The second positioning clamp 65 is connected to the second clamping cylinder 61, and the second clamping cylinder 61 drives the second positioning clamp 65 to rotate around the side of the second positioning proximity switch 64 in the front-rear direction.

[0083] In this embodiment, when the material rack is lifted and lowered into place, the sensing surface of the second positioning proximity switch 64 abuts against the bottom end of the material rack. At this time, the second clamping cylinder 61 drives the second positioning clamp block 65 to rotate in the front and rear directions, and the bottom end of the second positioning clamp block 65 abuts against the material rack boss, thereby realizing the clamping and positioning function of the material rack.

[0084] In some embodiments, a plurality of positioning adjustment gaskets are provided between the second positioning clamp block 65 and the second clamping cylinder 61 to adjust the clamping force of the second positioning clamp block 65 .

[0085] In some embodiments, reference Figure 5 to Figure 6 The detection type positioning mechanism also has a second positioning buffer block 66, which is arranged on the second positioning connecting plate 63 and below the second clamping cylinder 61, with the buffer surface of the second positioning buffer block 66 facing upward. When the material rack is lifted and lowered into place, the second positioning buffer block 66 on the side of the second positioning proximity switch 64 also abuts against the bottom end of the material rack boss for buffering. When the bottom end of the second positioning clamp block 65 abuts against the material rack boss, the second positioning buffer block 66 and the second positioning clamp block 65 simultaneously clamp the material rack boss between them.

[0086] In some embodiments, a plurality of positioning adjustment gaskets are disposed between the second positioning buffer block 66 and the second positioning connecting plate 63 to adjust the clamping force.

[0087] In some embodiments, reference Figures 7 and 8The second positioning mechanism 6 is a position-limiting positioning mechanism, which further comprises a second position-limiting pin 67 and a second position-limiting clamping block 68. The second position-limiting pin 67 is arranged on the second positioning connecting plate 63 and is located below the second clamping cylinder 61, and the position-limiting portion of the second position-limiting pin 67 faces upward. The second position-limiting clamping block 68 is connected to the second clamping cylinder 61, and the second clamping cylinder 61 drives the second position-limiting clamping block 68 to rotate around the front-rear direction above the second position-limiting pin 67.

[0088] In this embodiment, when the material rack is lifted and lowered to the right position, the second limit pin 67 is inserted into the pin hole preset on the material rack to limit the position of the material rack. At this time, the second clamping cylinder 61 drives the second limit clamp block 68 to rotate in the front-back direction, and the bottom end of the second limit clamp block 68 is pressed against the material rack boss to achieve the clamping and positioning function of the material rack.

[0089] In some embodiments, reference Figures 7 and 8 The second limiting clamp block 68 has an integrally connected limiting connection portion and a limiting abutment portion, the limiting connection portion is connected to the second clamping cylinder 61, the cross-section of the limiting abutment portion is a U-shaped structure, the limiting abutment portion is located above the second limiting pin 67, and the open structure in the middle of the limiting abutment portion is an avoidance groove for the second limiting pin 67.

[0090] In this embodiment, when the second clamping cylinder 61 drives the second limit clamp 68 to rotate in the front-to-back direction and the bottom end of the second limit clamp 68 abuts against the rack boss, the second limit pin 67 passes through the open structure in the middle of the limit abutment part, that is, the limit abutment part clamps and positions the rack boss around the second limit pin 67.

[0091] In some embodiments, reference Figures 7 and 8 The limiting positioning mechanism also has a second limiting buffer block 69, which is arranged on the second positioning connecting plate 63 and located on the side of the second limiting pin 67, and the buffer surface of the second limiting buffer block 69 faces upward. When the material rack is lifted and lowered into place, the second limiting buffer block 69 on the side of the second limiting pin 67 also abuts against the bottom end of the material rack boss for buffering.

[0092] In some embodiments, a plurality of positioning adjustment gaskets are arranged between the second limiting buffer block 69 and the second positioning connecting plate 63 to adjust the buffering force.

[0093] Reference Figure 1(a) to Figure 2(b) There are two support brackets 5, and the two support brackets 5 are respectively arranged on the left and right sides of the frame 1. There are four second positioning mechanisms 6, and one second positioning mechanism 6 is respectively arranged along the front and rear directions of one support bracket 5. As a result, a second positioning mechanism 6 is respectively arranged around the upper side of the loading area to realize the four-end clamping positioning function after the material rack is lifted to a high position.

[0094] In some embodiments, the four second positioning mechanisms 6 are two detection type positioning mechanisms and two limiting type positioning mechanisms. Each supporting bracket 5 is respectively provided with a detection type positioning mechanism and a limiting type positioning mechanism in the front-to-back direction. The four positioning mechanisms on the two supporting brackets 5 are centrally symmetrical structures.

[0095] For example, as shown in FIG. 1( a ), a detection type positioning mechanism and a limit type positioning mechanism are respectively provided at the front and rear of the left support bracket, and a limit type positioning mechanism and a detection type positioning mechanism are respectively provided at the front and rear of the right support bracket.

[0096] In some embodiments, reference Figure 1(a) to Figure 2(b) , Fig. 9 The body roof material rack mechanism for automobile welding also includes a product detection device 7, which has a detection bracket 71, a lower photoelectric switch 72 and a plurality of upper photoelectric switches 73.

[0097] The detection bracket 71 is disposed on the supporting bracket 5. If there are two or more supporting brackets 5, the detection bracket 71 is disposed on one of the supporting brackets 5.

[0098] The lower photoelectric switch 72 is arranged at the lower part of the detection bracket 71, and the sensing surface of the lower photoelectric switch 72 faces the loading area. The lower photoelectric switch 72 is used to sense whether the material rack has been lowered into place, so as to drive the second positioning mechanism 6 to realize the clamping positioning function.

[0099] A plurality of upper photoelectric switches 73 are arranged side by side at a preset distance in the vertical direction on the upper part of the detection bracket 71, and the sensing surface of the upper photoelectric switch 73 faces the loading area. The upper photoelectric switch 73 is used to sense the position of the vehicle body top cover in front of each sensing surface, so that the robot gripper can sequentially grasp the stacked vehicle body top covers.

[0100] In some embodiments, a working principle of the present invention is:

[0101] The vehicle body roof is stacked on the vehicle body roof material rack trolley, and the trolley is guided to the loading area through the guide rail unit 2. The first clamping cylinder 41 of the first positioning mechanism 4 clamps and positions the material rack at the rear end of the loading area. The lifting unit 3 is lifted upward to the first preset height, the second clamping cylinder 61 of the second positioning mechanism 6 extends, the lifting unit 3 is lowered to the second preset height, the second limit pin 67 is inserted into the preset pin hole on the material rack, and the second clamping cylinder 61 of the second positioning mechanism 6 clamps and positions the material rack boss at the four ends above the loading area. The upper photoelectric switch 73 detects the position of each vehicle body roof, and the robot picks up the parts.

[0102] In some embodiments, the vehicle body roof material rack mechanism for automobile welding of the present invention can also be applied to other mechanisms that switch between a low position and a high position.

[0103] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation of the utility model, and the utility model shall be protected within the scope defined by the attached claims.

Claims

1. A body roof material rack mechanism for automobile welding, the body roof material rack mechanism for automobile welding comprising a frame, a guide rail unit and a lifting unit, characterized in that: The left and right sides of the frame are each provided with a guide rail unit, a loading area is provided between the two guide rail units, and the lifting unit is provided in the loading area; The vehicle body roof material rack mechanism for automobile welding also includes: A first positioning mechanism, the first positioning mechanism is located on the frame and at the rear end of the loading area, and the first positioning mechanism has a first clamping cylinder; A supporting bracket, wherein the supporting bracket is arranged on the frame; The second positioning mechanism is arranged on the supporting bracket and is located above the left side or the right side of the loading area. The second positioning mechanism has a second clamping cylinder that can perform left and right telescopic movement.

2. The body roof material rack mechanism for automobile welding according to claim 1, characterized in that: The vehicle body roof material rack mechanism for automobile welding further includes a product detection device, which has: A detection bracket, wherein the detection bracket is arranged on the supporting bracket; A lower photoelectric switch, wherein the lower photoelectric switch is arranged at the lower part of the detection bracket, and the sensing surface of the lower photoelectric switch faces the loading area; A plurality of upper photoelectric switches are arranged side by side at a preset distance in the up-down direction on the upper part of the detection bracket, and the sensing surfaces of the upper photoelectric switches face the loading area.

3. The body roof material rack mechanism for automobile welding according to claim 1, characterized in that: The first positioning mechanism also has: A first positioning bracket, the first positioning bracket is arranged on the frame, and the first clamping cylinder is arranged on the first positioning bracket; A first positioning proximity switch, which is disposed on the first positioning bracket and located above the first clamping cylinder, and a sensing surface of the first positioning proximity switch faces the front end; The first positioning clamp block is connected to the first clamping cylinder via the first positioning connecting block, and the first clamping cylinder drives the first positioning clamp block to rotate in the left and right directions in front of the first positioning proximity switch.

4. The body roof material rack mechanism for automobile welding according to claim 3, characterized in that: The first positioning mechanism also has: A first positioning buffer block, which is disposed on the first positioning bracket and is located at a side of the first positioning proximity switch, and a buffer surface of the first positioning buffer block faces the front end; and / or, The first positioning mechanism also has: The first positioning abutment block is arranged on the first positioning bracket and is located at the side of the first positioning buffer block, and the abutment surface of the first positioning abutment block faces the front end.

5. The vehicle body roof material rack mechanism for automobile welding according to any one of claims 1 to 4, characterized in that: There are two first positioning mechanisms, and the two first positioning mechanisms are arranged at a preset distance in the left-right direction at the rear end of the loading area.

6. The body roof material rack mechanism for automobile welding according to claim 1, characterized in that: The second positioning mechanism also has: A second positioning cylinder, wherein the second positioning cylinder is arranged on the supporting bracket, and the axial direction of the piston rod of the second positioning cylinder is in the left-right direction; A second positioning connecting plate, wherein the second positioning connecting plate is connected to the piston rod of the second positioning cylinder, and the second positioning connecting plate is driven by the second positioning cylinder to perform left and right telescopic movement, and the second positioning connecting plate is provided with the second clamping cylinder; The second positioning mechanism is a detection type positioning mechanism or a limit type positioning mechanism; The detection type positioning mechanism also has: A second positioning proximity switch, the second positioning proximity switch is arranged on the second positioning connecting plate and is located on the side of the second clamping cylinder, and the sensing surface of the second positioning proximity switch faces upward; A second positioning clamping block, wherein the second positioning clamping block is connected to the second clamping cylinder, and the second clamping cylinder drives the second positioning clamping block to rotate around the front-rear direction on the side of the second positioning proximity switch; The position limiting positioning mechanism also has: A second limiting pin, the second limiting pin is arranged on the second positioning connecting plate and is located below the second clamping cylinder, and the limiting portion of the second limiting pin faces upward; The second limiting clamp block is connected to the second clamping cylinder, and the second limiting clamp block is driven by the second clamping cylinder to rotate around the front-rear direction above the second limiting pin.

7. The vehicle body roof material rack mechanism for automobile welding according to claim 6, characterized in that: The detection type positioning mechanism also has: a second positioning buffer block, the second positioning buffer block being arranged on the second positioning connecting plate and being located below the second clamping cylinder, with a buffer surface of the second positioning buffer block facing upward; And / or, the position limiting positioning mechanism further comprises: A second limiting buffer block is arranged on the second positioning connecting plate and is located on the side of the second limiting pin, and a buffer surface of the second limiting buffer block faces upward.

8. The vehicle body roof material rack mechanism for automobile welding according to claim 6, characterized in that: The second limiting clamp block has a limiting connection part and a limiting abutment part which are integrally connected, the limiting connection part is connected to the second clamping cylinder, the cross section of the limiting abutment part is a U-shaped structure, the limiting abutment part is located above the second limiting pin, and the open structure in the middle of the limiting abutment part is an avoidance groove for the second limiting pin.

9. The vehicle body roof material rack mechanism for automobile welding according to claim 1, 5, 6, 7 or 8, characterized in that: There are two supporting brackets, and the two supporting brackets are respectively arranged on the left and right sides of the frame; There are four second positioning mechanisms, and one second positioning mechanism is respectively arranged on one of the support brackets along the front-to-back direction.

10. The vehicle body roof material rack mechanism for automobile welding according to claim 9, characterized in that: The four second positioning mechanisms are two detection type positioning mechanisms and two limit type positioning mechanisms. Each support bracket is provided with one detection type positioning mechanism and one limit type positioning mechanism along the front-to-back direction respectively. The four positioning mechanisms on the two support brackets are centrally symmetrical structures.

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