A welding apparatus for a vehicle pillar and a welding process thereof

Abstract

The application discloses a welding device for automobile stand columns and a welding process thereof, and relates to the technical field of welding. The welding device for automobile stand columns and the welding process thereof, which comprise a base, the upper surface of the base is provided with a U-shaped placement table, three supporting plates are fixedly connected between the U-shaped placement table and the base, a stand column reinforcing plate is placed on the U-shaped placement table, the opposite two side surfaces of the U-shaped placement table are both fixedly connected with three rotating seats, and L-shaped clamping plates are rotatably connected to the rotating seats. When an external mechanical hand places the stand column reinforcing plate on the U-shaped placement table, the L-shaped clamping plates can automatically clamp the stand column reinforcing plate. The linkage structure does not need additional pneumatic or electric components to clamp the stand column reinforcing plate, and the linkage structure has a low delay effect when clamping the stand column reinforcing plate, thereby guaranteeing the efficiency and speed during welding of the stand column reinforcing plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to a welding device for an automobile stand column and a welding process thereof. BACKGROUND

[0002] The middle stand column reinforcing plate is a sheet metal part and is part of an automobile stand column. In the preparation process of the existing middle stand column reinforcing plate, a safety belt fixing bracket workpiece, an upper hinge workpiece and a lower hinge workpiece are sequentially welded on the inner side of the reinforcing plate for the assembly of the automobile in the later stage.

[0003] In order to prevent the middle stand column reinforcing plate from loosening during welding, a clamp is needed to fasten the middle stand column reinforcing plate. However, most of the existing middle stand column reinforcing plate clamps are controlled by air cylinders. Since three workpieces need to be welded on the existing middle stand column reinforcing plate, three air cylinder clamps need to be provided on the welding device to fix the three welding positions of the middle stand column reinforcing plate. However, the air cylinder clamps on most of the existing welding devices have the following problems: since the existing middle stand column reinforcing plate is placed on the welding device, a sensor is needed to trigger the air cylinder. However, electronic devices inevitably have high delay and other problems, which causes the air cylinder clamp to fail to clamp the middle stand column reinforcing plate in time, affecting the efficiency and speed of welding the stand column reinforcing plate. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the prior art, and provides a welding device for an automobile stand column and a welding process thereof, which can solve the problem that since the existing middle stand column reinforcing plate is placed on the welding device, a sensor is needed to trigger the air cylinder. However, electronic devices inevitably have high delay and other problems, which causes the air cylinder clamp to fail to clamp the middle stand column reinforcing plate in time, affecting the efficiency and speed of welding the stand column reinforcing plate.

[0005] In order to achieve the above object, the present application provides the following technical scheme: A welding equipment for automobile stand, comprising a base, the upper surface of the base is provided with a U-shaped placing table, three supporting plates are fixedly connected between the U-shaped placing table and the base, a stand reinforcing plate is placed on the U-shaped placing table, the opposite two side surfaces of the U-shaped placing table are fixedly connected with three rotating seats, L-shaped clamping plates are rotatably connected on the rotating seats, the horizontal plates of the L-shaped clamping plates are arranged above the stand reinforcing plate, rubber pressing plates are fixedly connected on the side surface of the horizontal plate of the L-shaped clamping plate close to the stand reinforcing plate, two connecting plates are fixedly connected between the horizontal plates of the three L-shaped clamping plates, three contact plates are arranged in the U-shaped placing table, the contact plates are arranged below the stand reinforcing plate, push rods are fixedly connected on the lower surfaces of the contact plates, the lower ends of the push rods slide through the lower surface of the U-shaped placing table, push plates are fixedly connected on the lower ends of the push rods, control push plates are rotatably connected on the opposite two side surfaces of the push plates, the other sides of the control push plates are rotatably connected with the lower sides of the vertical plates of the L-shaped clamping plates, first tension springs are fixedly connected between the upper surfaces of the push plates and the lower surfaces of the U-shaped placing table, and the first tension springs are movably sleeved on the outer surfaces of the push rods.

[0006] Preferably, the base is provided with a slide rail base, a multi-axis welding manipulator is arranged on the slide rail base, two slide rails are fixedly connected on the upper surface of the base, two slide rail joints are inlaid on the lower side of the slide rail base, and the slide rail base is slidably connected with the slide rails through the slide rail joints.

[0007] Preferably, the upper surface of the base is fixedly connected with two fixed plates, the two fixed plates are arranged between the two slide rails and located on the two sides of the slide rail base, and a threaded rod is rotatably connected between the two fixed plates.

[0008] Preferably, the slide rail base is threadedly sleeved on the outer surface of the threaded rod, one end of the threaded rod rotatably penetrates out of the fixed plate, a servo motor is fixedly connected on the upper surface of the base, and the output shaft of the servo motor is fixedly connected with the end of the threaded rod penetrating out of the fixed plate.

[0009] Preferably, the lower surface of the U-shaped placing table is fixedly connected with a control housing, the control housing is arranged on one side close to the standby station of the slide rail base, a fixed clamping rod is arranged in the control housing, one end of the fixed clamping rod slides through the outer surface of the control housing, a limiting groove is arranged on the side surface of the push plate facing the fixed clamping rod, and the limiting groove is matched with the fixed clamping rod.

[0010] Preferably, one end of the fixed clamping rod in the control housing is fixedly connected with a limiting plate, a second tension spring is fixedly connected between the limiting plate and the inner wall of the control housing, the second tension spring is movably sleeved on the outer surface of the fixed clamping rod, a compression plate is fixedly connected on the lower surface of the push plate, the compression plate is arranged in a right triangle shape, and the compression plate and the limiting groove are in the same vertical position.

[0011] Preferably, the control shell is provided with a push block, the push block is in the shape of a right trapezoid, the lower side of the limiting plate is in contact with the inclined surface of the push block, the lower surface of the push block is fixedly connected with a movable rod, and the lower end of the movable rod slides through the lower surface of the control shell.

[0012] Preferably, the side surface of the slide rail base facing the movable rod is fixedly connected with a trigger block, the trigger block is also in the shape of a right triangle, the upper surface of the base is fixedly connected with a limiting seat, the limiting seat is slidably sleeved with a trigger push rod, one end of the trigger push rod is in contact with the inclined surface of the trigger block, and the other end of the trigger push rod is rotatably connected with the lower end of the movable rod.

[0013] Preferably, a welding process for an automobile stand column comprises the following specific operation steps: S1, starting a servo motor, the servo motor drives a threaded rod to rotate, a slide rail base is driven to move horizontally under the transmission of the threaded teeth of the threaded rod, and the slide rail base is moved to a welding station away from a standby station;

[0014] S2, an external mechanical arm sucks and places a stand column reinforcing plate on a U-shaped placement table, the bottom of the stand column reinforcing plate is in contact with a contact plate and forms a downward pushing force on the contact plate, a push rod controls a push plate to move downward, and a first tension spring is stretched under stress, the push plate exerts a pushing force on a control push plate during downward movement, so that the control push plate pushes an L-shaped clamping plate to extrude the surface of the stand column reinforcing plate;

[0015] S2-1, during the downward movement of the push plate, the inclined surface of the compression plate first contacts one end of the fixed clamping rod located outside the control shell, and during the continuous downward movement of the push plate, the inclined surface of the compression plate extrudes the fixed clamping rod, so that the fixed clamping rod gradually shrinks into the control shell, and at the same time, the limiting plate stretches the second tension spring, when the L-shaped clamping plate clamps the stand column reinforcing plate, the limiting groove on the push plate is at the same horizontal position as the fixed clamping rod, so that the fixed clamping rod moves into the limiting groove under the pulling of the second tension spring;

[0016] S3, the external mechanical arm in turn grabs and places a safety belt fixing support workpiece, an upper hinge workpiece and a lower hinge workpiece on the corresponding three welding positions of the stand column reinforcing plate, and at the same time, the slide rail base drives a multi-axis welding manipulator to move to the corresponding welding stations in turn to weld the placed workpieces, and after the multi-axis welding manipulator finishes welding, the slide rail base moves to the standby station;

[0017] S3-1, after the slide rail base moves to the standby station, the inclined surface of the trigger block is in contact with the trigger push rod and extrudes the trigger push rod, so that the trigger push rod moves to the side away from the slide rail base, and at the same time, the control rotating plate exerts an upward pushing force on the movable rod, so that the push block pushes the fixed clamping rod to move out of the limiting groove, the L-shaped clamping plate releases the limitation on the stand column reinforcing plate, and finally the external mechanical arm carries the welded stand column reinforcing plate out.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The welding equipment and welding process for automotive pillars allow for automatic clamping of the pillar reinforcement plate by an L-shaped clamping plate when an external robotic arm places the reinforcement plate on a U-shaped platform. The linkage structure eliminates the need for additional pneumatic or electric components to clamp the reinforcement plate, while also providing low-delay clamping, thus ensuring efficiency and speed during welding.

[0020] The welding equipment and welding process for automobile pillars utilize a rubber pressure plate between the L-shaped clamping plate and the pillar reinforcement plate. This serves as a buffer, minimizing the problem of excessive pressure exerted by the L-shaped clamping plate on the pillar reinforcement plate, which could lead to indentations on the surface of the pillar reinforcement plate and thus ensuring the quality of the welded pillar reinforcement plate.

[0021] The welding equipment and welding process for automobile pillars use a fixed clamping rod to limit the push plate, thus minimizing the upward displacement of the push plate under the pull of the first tension spring. This structure effectively limits the push plate and further ensures the clamping effect of the L-shaped clamping plate on the pillar reinforcement plate, minimizing the problem of loosening of the pillar reinforcement plate during welding and improving the stability of the pillar reinforcement plate during welding.

[0022] The welding equipment and welding process for automobile pillars feature an L-shaped clamping plate that clamps the pillar reinforcement plate. The fixing rod automatically limits and fixes the pushing plate, allowing for quick fixation of the pushing plate without excessive manual operation. All processes are linked, with low delay and high triggering accuracy, ensuring efficiency in welding pillar reinforcement plates.

[0023] The welding equipment and welding process for automobile pillars allow the fixed lever to automatically release the restriction on the push plate when the slide rail base moves to the standby position, making it easier for an external robotic arm to move the welded pillar reinforcement plate away. This eliminates the need for excessive manual operation, as all processes are linked, have low latency, and high triggering accuracy, thus improving the speed and efficiency of welding pillar reinforcement plates. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a schematic diagram of the structure of a welding device for automobile pillars according to the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 It is the main view plane figure of U-shaped placement table connecting structure of the application;

[0028] Figure 4 It is the schematic diagram of slide rail base connecting structure of the application;

[0029] Figure 5 It is the side view plane figure of control casing internal structure of the application;

[0030] Figure 6 It is the schematic diagram of movable rod connecting structure of the application;

[0031] Figure 7 It is Figure 1 The enlarged view at B.

[0032] The figure mark: 1, base; 2, support plate; 3, U-shaped placement table; 4, stand reinforcing plate; 5, rotating seat; 6, L-shaped clamping plate; 7, rubber pressing plate; 8, connecting plate; 9, control push plate; 10, contact plate; 11, push rod; 12, push plate; 13, first tension spring; 14, slide rail base; 15, multi-axis welding mechanical hand; 16, slide rail; 17, fixed plate; 18, threaded rod; 19, servo motor; 20, trigger block; 21, control casing; 22, fixed clamping rod; 23, limiting groove; 24, limiting plate; 25, second tension spring; 26, compression plate; 27, movable rod; 28, push block; 29, control rotating plate; 30, trigger push rod; 31, limiting seat. DETAILED DESCRIPTION

[0033] This part will describe the specific embodiments of the application in detail, the preferred embodiments of the application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the application, but it cannot be understood as a limitation on the protection scope of the application.

[0034] In the description of the application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as a limitation on the application.

[0035] In the description of the application, greater than, less than, more than, etc. is understood as not including the number, above, below, etc. is understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0036] In the description of the present application, the words such as arrangement, installation, connection, etc. should be understood broadly unless otherwise explicitly limited, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution. Embodiment

[0037] Please refer to Figures 1-4 The present application provides a technical solution: a welding equipment for automobile stand, comprising a base 1, the upper surface of the base 1 is provided with a U-shaped placing table 3, and three supporting plates 2 are fixedly connected between the U-shaped placing table 3 and the base 1, the U-shaped placing table 3 is supported by the three supporting plates 2, preventing the U-shaped placing table 3 from falling, a stand reinforcement plate 4 is placed on the U-shaped placing table 3, the upper surface of the U-shaped placing table 3 is consistent with the lower side of the stand reinforcement plate 4, so that the stand reinforcement plate 4 is placed on the U-shaped placing table 3 by an external mechanical arm, and the external mechanical arm in turn grasps and places a safety belt fixing bracket workpiece, an upper hinge workpiece and a lower hinge workpiece at three welding positions corresponding to the stand reinforcement plate 4 for welding, so that the U-shaped placing table 3 limits the stand reinforcement plate 4, and the problem of loosening of the stand reinforcement plate 4 during welding is avoided as much as possible.

[0038] Further, three rotating seats 5 are fixedly connected to the opposite side surfaces of the U-shaped placing table 3, L-shaped clamping plates 6 are rotatably connected to the rotating seats 5, the horizontal plates of the L-shaped clamping plates 6 are arranged above the stand reinforcement plate 4, rubber pressing plates 7 are fixedly connected to the side surface of the horizontal plate of the L-shaped clamping plate 6 close to the stand reinforcement plate 4, and two connecting plates 8 are fixedly connected between the horizontal plates of the three L-shaped clamping plates 6, so that the lower side of the vertical plate of the L-shaped clamping plate 6 is displaced outward by pushing, so that the L-shaped clamping plate 6 rotates around the rotating seat 5 to the side close to the stand reinforcement plate 4, so that the horizontal plate of the L-shaped clamping plate 6 extrudes the upper surface of the stand reinforcement plate 4, and the stand reinforcement plate 4 is more closely attached to the U-shaped placing table 3, and the problem of loosening during welding of the three points on the stand reinforcement plate 4 is avoided as much as possible, further ensuring the precision and quality during welding of the three workpieces on the stand reinforcement plate 4.

[0039] The rubber pressing plate 7 is arranged between the L-shaped clamping plate 6 and the stand reinforcement plate 4, which serves as a buffer to avoid the problem of excessive pressure of the L-shaped clamping plate 6 on the stand reinforcement plate 4 causing indentation on the surface of the stand reinforcement plate 4, and ensures the quality of the welded stand reinforcement plate 4.

[0040] Further, the U-shaped placement table 3 is internally provided with three contact plates 10, the contact plates 10 are arranged below the column reinforcing plate 4, the lower surface of the contact plate 10 is fixedly connected with a push rod 11, the lower end of the push rod 11 is slidably penetrated through the lower surface of the U-shaped placement table 3, the lower end of the push rod 11 is fixedly connected with a push plate 12, the opposite two side surfaces of the push plate 12 are rotatably connected with the control push plate 9, the other side of the control push plate 9 is rotatably connected with the lower side of the vertical plate of the L-shaped clamping plate 6, the upper surface of the push plate 12 and the lower surface of the U-shaped placement table 3 are fixedly connected with a first tension spring 13, the first tension spring 13 is movably sleeved on the outer surface of the push rod 11, so that when the first tension spring 13 is not affected by tension, the first tension spring 13 will form tension on the push plate 12, so that the initial position of the push plate 12 is close to one side of the U-shaped placement table 3, when the column reinforcing plate 4 is grabbed and placed on the U-shaped placement table 3 by the external mechanical hand, the bottom of the column reinforcing plate 4 is in contact with the contact plate 10 and forms a downward pushing force on the contact plate 10, the push rod 11 controls the downward displacement of the push plate 12, and at the same time the first tension spring 13 is stretched under stress, the push plate 12 exerts a pushing force on the control push plate 9 during the downward displacement, so that the control push plate 9 pushes the L-shaped clamping plate 6 to extrude the surface of the column reinforcing plate 4, as can be seen from the above structure, when the external mechanical hand places the column reinforcing plate 4 on the U-shaped placement table 3, the L-shaped clamping plate 6 can automatically clamp the column reinforcing plate 4, and the above linkage structure does not need additional pneumatic or electric components to clamp the column reinforcing plate 4, and at the same time the linkage structure has a low delay effect when clamping the column reinforcing plate 4, which guarantees the efficiency and speed when welding the column reinforcing plate 4.

[0041] Further, the base 1 is provided with a slide rail base 14, the slide rail base 14 is provided with a multi-axis welding manipulator 15, the multi-axis welding manipulator 15 is a prior structure and will not be described in detail here, the upper surface of the base 1 is fixedly connected with two slide rails 16, the lower side of the slide rail base 14 is inlaid with two slide rail joints, the slide rail base 14 is slidably connected with the slide rails 16 through the slide rail joints, the upper surface of the base 1 is fixedly connected with two fixed plates 17, the two fixed plates 17 are arranged between the two slide rails 16 and are located at the two sides of the slide rail base 14 respectively, a threaded rod 18 is rotatably connected between the two fixed plates 17, the slide rail base 14 is threadedly sleeved on the outer surface of the threaded rod 18, one end of the threaded rod 18 rotatably penetrates out of the fixed plate 17, a servo motor 19 is fixedly connected to the upper surface of the base 1, the output shaft of the servo motor 19 is fixedly connected with the end of the threaded rod 18 penetrating out of the fixed plate 17, therefore, by starting the servo motor 19, the servo motor 19 drives the threaded rod 18 to rotate, the slide rail base 14 is horizontally displaced under the transmission of the threaded teeth of the threaded rod 18, so that the slide rail base 14 can be controlled to move to the three welding stations and the standby station, when the slide rail base 14 moves to the three welding stations respectively, the welding workpieces on the column reinforcing plate 4 are welded by the multi-axis welding manipulator 15, when the slide rail base 14 moves to the standby station, it indicates that the welding of the three welding workpieces on the column reinforcing plate 4 is completed, the column reinforcing plate 4 after welding can be carried away by an external manipulator, when the column reinforcing plate 4 on the U-shaped placement table 3 is carried away, the slide rail base 14 moves to the welding station away from the standby station, by this operation mode, the multi-axis welding manipulator 15 can quickly weld the column reinforcing plate 4 placed on the U-shaped placement table 3 again, and the welding efficiency of the column reinforcing plate 4 is ensured.

[0042] According to the above-mentioned implementation process, it is found that the pushing plate 12 lacks a limiting structure after falling, which can cause the external manipulator to easily pull the pushing rod 11 to the initial position after loosening the column reinforcing plate 4, and the contact plate 10 can easily lift the column reinforcing plate 4, therefore, based on the above-mentioned embodiment one, the embodiment two is designed;

[0043] Please refer to Figure 5, embodiment two, further, the lower surface of the U-shaped placement table 3 is fixedly connected with a control housing 21, the control housing 21 is arranged on one side close to the slide rail base 14 standby station, a fixed clamping rod 22 is arranged in the control housing 21, one end of the fixed clamping rod 22 is slidably penetrated out of the outer surface of the control housing 21, a limiting groove 23 is formed in the side surface of the push plate 12 facing the fixed clamping rod 22, the limiting groove 23 is matched with the fixed clamping rod 22, so that when the fixed clamping rod 22 is displaced into the limiting groove 23, the fixed clamping rod 22 limits the push plate 12, thereby avoiding the upward displacement of the push plate 12 under the pulling of the first tension spring 13, and the above structure can limit the push plate 12, thereby further ensuring the clamping effect of the L-shaped clamping plate 6 on the column reinforcing plate 4, avoiding the loosening of the column reinforcing plate 4 during welding, and improving the stability of the column reinforcing plate 4 during welding.

[0044] Further, one end of the fixed clamping rod 22 in the control housing 21 is fixedly connected with a limiting plate 24, the second tension spring 25 is fixedly connected between the limiting plate 24 and the inner wall of the control housing 21, the second tension spring 25 is movably sleeved on the outer surface of the fixed clamping rod 22, the lower surface of the push plate 12 is fixedly connected with a compression plate 26, the compression plate 26 is arranged in a right triangle shape, and the compression plate 26 is arranged at the same vertical position as the limiting groove 23, so that when the push plate 12 is displaced downward, the inclined surface of the compression plate 26 first contacts one end of the fixed clamping rod 22 outside the control housing 21, and during the continuous downward displacement of the push plate 12, the inclined surface of the compression plate 26 will extrude the fixed clamping rod 22, so that the fixed clamping rod 22 gradually shrinks into the control housing 21, and the limiting plate 24 pulls the second tension spring 25 to stretch, when the L-shaped clamping plate 6 clamps the column reinforcing plate 4, the limiting groove 23 on the push plate 12 is at the same horizontal position as the fixed clamping rod 22, so that the fixed clamping rod 22 is displaced into the limiting groove 23 under the pulling of the second tension spring 25, and the position of the push plate 12 is limited, through the above structure, when the L-shaped clamping plate 6 clamps the column reinforcing plate 4, the fixed clamping rod 22 automatically limits and fixes the push plate 12, the push plate 12 can be quickly fixed without too much manual operation, and it is linkage, low delay and high trigger precision, thereby ensuring the efficiency during welding of the column reinforcing plate 4.

[0045] The present application considers that the fixed clamping rod 22 limits the push plate 12 in the above-mentioned embodiment two, so that the L-shaped clamping plate 6 cannot rotate, and therefore when the three welding workpieces on the column reinforcing plate 4 are welded and the slide rail base 14 moves to the standby position, how to quickly release the clamping state of the column reinforcing plate 4, in view of this, the present application combines the above-mentioned embodiment one and embodiment two to design embodiment three.

[0046] Please refer to 5-7, example three, further, the control shell 21 is provided with a push block 28, the push block 28 is shaped as a right trapezoidal shape, and the lower side of the limiting plate 24 is in contact with the inclined surface of the push block 28, the lower surface of the push block 28 is fixedly connected with a movable rod 27, the lower end of the movable rod 27 is slidably penetrated through the lower surface of the control shell 21, so that by controlling the upward displacement of the movable rod 27, the movable rod 27 controls the upward displacement of the push block 28, so that the inclined surface of the push block 28 forms a pushing force on the limiting plate 24, so that the limiting plate 24 pulls the fixed clamping rod 22 to displace out of the limiting groove 23, so that the push plate 12 is not limited, so that when the external mechanical hand lifts the column reinforcing plate 4 upward, the column reinforcing plate 4 is not pressed against the contact plate 10, so that the first tension spring 13 pulls the push plate 12 to displace to the initial position, and the L-shaped clamping plate 6 is not limited against the column reinforcing plate 4.

[0047] Further, the side surface of the slide rail base 14 facing the movable rod 27 is fixedly connected with a trigger block 20, the trigger block 20 is also shaped as a right triangle, the upper surface of the base 1 is fixedly connected with a limiting seat 31, the limiting seat 31 is slidably sleeved with a trigger push rod 30, one end of the trigger push rod 30 is in contact with the inclined surface of the trigger block 20, the other end of the trigger push rod 30 is rotatably connected with the control rotating plate 29 between the lower end of the movable rod 27, so that when the multi-axis welding robot 15 finishes welding the three workpieces on the column reinforcing plate 4, the slide rail base 14 moves to the standby station, the inclined surface of the trigger block 20 is in contact with the trigger push rod 30 and presses the trigger push rod 30, so that the trigger push rod 30 displaces to the side away from the slide rail base 14, and the control rotating plate 29 forms an upward pushing force on the movable rod 27, so that the push block 28 pushes the fixed clamping rod 22 to displace out of the limiting groove 23, as can be seen from the above structure, when the slide rail base 14 moves to the standby station, the fixed clamping rod 22 automatically releases the limitation on the push plate 12, so that the external mechanical hand can conveniently carry away the column reinforcing plate 4 after welding, without the need for excessive manual operation, all are linkage, low delay, high trigger precision, and improve the speed and efficiency of welding the column reinforcing plate 4.

[0048] Working principle: when the device is used, the first step: start the servo motor 19, the servo motor 19 drives the threaded rod 18 to rotate, the slide rail base 14 is displaced in the horizontal direction under the transmission of the threaded teeth of the threaded rod 18, the slide rail base 14 moves to the welding station away from the standby station;

[0049] Second step: the external mechanical arm sucks and places the column reinforcing plate 4 to the U-shaped placement table 3, the bottom of the column reinforcing plate 4 contacts the contact plate 10 and forms a downward thrust on the contact plate 10, the push rod 11 controls the push plate 12 to displace downward, and the first tension spring 13 is stretched under stress, the push plate 12 exerts a pushing force on the control push plate 9 during downward displacement, so the control push plate 9 pushes the L-shaped clamping plate 6 to extrude the surface of the column reinforcing plate 4, during the downward displacement of the push plate 12, the inclined surface of the compression plate 26 first contacts the end of the fixed clamping rod 22 outside the control housing 21, during the continuous downward displacement of the push plate 12, the inclined surface of the compression plate 26 will extrude the fixed clamping rod 22, so that the fixed clamping rod 22 gradually shrinks into the control housing 21, and the limiting plate 24 pulls the second tension spring 25 to stretch, when the L-shaped clamping plate 6 clamps the column reinforcing plate 4, the limiting groove 23 on the push plate 12 is at the same horizontal position as the fixed clamping rod 22, so the fixed clamping rod 22 is displaced into the limiting groove 23 under the pulling of the second tension spring 25;

[0050] Third step: the external mechanical arm in turn grabs and places the safety belt fixing support workpiece, the upper hinge workpiece and the lower hinge workpiece on the corresponding three welding positions of the column reinforcing plate 4, and the slide rail base 14 drives the multi-axis welding mechanical hand 15 to move to the corresponding welding station in turn to weld the placed workpieces, after the multi-axis welding mechanical hand 15 finishes welding, the slide rail base 14 moves to the standby station, the inclined surface of the trigger block 20 contacts and extrudes the trigger push rod 30, so that the trigger push rod 30 displaces away from the slide rail base 14, and the control rotating plate 29 exerts an upward pushing force on the movable rod 27, so that the push block 28 pushes the fixed clamping rod 22 to displace out of the limiting groove 23, the L-shaped clamping plate 6 releases the limitation on the column reinforcing plate 4, and finally the external mechanical arm carries the welded column reinforcing plate 4 out.

[0051] The application designs a new technical scheme according to the above scheme: a welding process for an automobile column, and the specific operation steps are as follows: S1, the servo motor 19 is started, the servo motor 19 drives the threaded rod 18 to rotate, the slide rail base 14 is displaced in the horizontal direction under the transmission of the threaded teeth of the threaded rod 18, and the slide rail base 14 moves to the welding station away from the standby station;

[0052] S2, the external mechanical arm sucks and places the column reinforcing plate 4 to the U-shaped placement table 3, the bottom of the column reinforcing plate 4 contacts the contact plate 10 and forms a downward thrust on the contact plate 10, the push rod 11 controls the push plate 12 to displace downward, and the first tension spring 13 is stretched under stress, the push plate 12 exerts a pushing force on the control push plate 9 during downward displacement, so the control push plate 9 pushes the L-shaped clamping plate 6 to extrude the surface of the column reinforcing plate 4;

[0053] S2-1, during the downward displacement of the pushing plate 12, the inclined surface of the compression plate 26 first contacts the end of the fixed clamping rod 22 outside the control housing 21, and during the continuous downward displacement of the pushing plate 12, the inclined surface of the compression plate 26 will extrude the fixed clamping rod 22, so that the fixed clamping rod 22 gradually shrinks into the control housing 21, and at the same time, the limiting plate 24 pulls the second tension spring 25 to stretch, when the L-shaped clamping plate 6 clamps the column reinforcing plate 4, the limiting groove 23 on the pushing plate 12 is at the same horizontal position as the fixed clamping rod 22, so the fixed clamping rod 22 is displaced into the limiting groove 23 under the pulling of the second tension spring 25;

[0054] S3, the external mechanical arm in turn places the safety belt fixing support workpiece, the upper hinge workpiece and the lower hinge workpiece on the corresponding three welding positions of the column reinforcing plate 4, and the slide rail base 14 drives the multi-axis welding mechanical arm 15 to move to the corresponding welding station in turn to weld the placed workpieces, and after the multi-axis welding mechanical arm 15 finishes welding, the slide rail base 14 moves to the standby station;

[0055] S3-1, after the slide rail base 14 moves to the standby station, the inclined surface of the trigger block 20 contacts and extrudes the trigger push rod 30, so that the trigger push rod 30 is displaced away from the slide rail base 14, and at the same time, the control rotating plate 29 forms an upward pushing force on the movable rod 27, so that the pushing block 28 pushes the fixed clamping rod 22 to displace out of the limiting groove 23, and the L-shaped clamping plate 6 releases the limitation on the column reinforcing plate 4, and finally the external mechanical arm carries the welded column reinforcing plate 4 out.

[0056] The embodiments of the application are described in detail above in combination with the drawings, but the application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. A welding apparatus for an automotive pillar, characterized by: The base (1) is provided with a U-shaped placement table (3) on the upper surface, three supporting plates (2) are fixedly connected between the U-shaped placement table (3) and the base (1), a column reinforcing plate (4) is placed on the U-shaped placement table (3), the opposite two side surfaces of the U-shaped placement table (3) are fixedly connected with three rotating seats (5), the rotating seats (5) are rotatably connected with L-shaped clamping plates (6), the horizontal plates of the L-shaped clamping plates (6) are arranged above the column reinforcing plate (4), the side surface of the horizontal plate of the L-shaped clamping plate (6) close to the column reinforcing plate (4) is fixedly connected with a rubber pressing plate (7), two connecting plates (8) are fixedly connected between the horizontal plates of the three L-shaped clamping plates (6), three contact plates (10) are arranged in the U-shaped placement table (3) and below the column reinforcing plate (4), the lower surface of the contact plate (10) is fixedly connected with a pushing rod (11), the lower end of the pushing rod (11) is slidably arranged through the lower surface of the U-shaped placement table (3), the lower end of the pushing rod (11) is fixedly connected with a pushing plate (12), the opposite two side surfaces of the pushing plate (12) are rotatably connected with control pushing plates (9), the other side of the control pushing plate (9) is rotatably connected with the lower side of the vertical plate of the L-shaped clamping plate (6), the upper surface of the pushing plate (12) and the lower surface of the U-shaped placement table (3) are fixedly connected with a first tension spring (13), and the first tension spring (13) is movably arranged on the outer surface of the pushing rod (11); The base (1) is provided with a U-shaped placement table (3) on the upper surface, three supporting plates (2) are fixedly connected between the U-shaped placement table (3) and the base (1), a column reinforcing plate (4) is placed on the U-shaped placement table (3), the opposite two side surfaces of the U-shaped placement table (3) are fixedly connected with three rotating seats (5), the rotating seats (5) are rotatably connected with L-shaped clamping plates (6), the horizontal plates of the L-shaped clamping plates (6) are arranged above the column reinforcing plate (4), the side surface of the horizontal plate of the L-shaped clamping plate (6) close to the column reinforcing plate (4) is fixedly connected with a rubber pressing plate (7), two connecting plates (8) are fixedly connected between the horizontal plates of the three L-shaped clamping plates (6), three contact plates (10) are arranged in the U-shaped placement table (3) and below the column reinforcing plate (4), the lower surface of the contact plate (10) is fixedly connected with a pushing rod (11), the lower end of the pushing rod (11) is slidably arranged through the lower surface of the U-shaped placement table (3), the lower end of the pushing rod (11) is fixedly connected with a pushing plate (12), the opposite two side surfaces of the pushing plate (12) are rotatably connected with control pushing plates (9), the other side of the control pushing plate (9) is rotatably connected with the lower side of the vertical plate of the L-shaped clamping plate (6), the upper surface of the pushing plate (12) and the lower surface of the U-shaped placement table (3) are fixedly connected with a first tension spring (13), and the first tension spring (13) is movably arranged on the outer surface of the pushing rod (11); The base (1) is provided with a U-shaped placement table (3) on the upper surface, three supporting plates (2) are fixedly connected between the U-shaped placement table (3) and the base (1), a column reinforcing plate (4) is placed on the U-shaped placement table (3), the opposite two side surfaces of the U-shaped placement table (3) are fixedly connected with three rotating seats (5), the rotating seats (5) are rotatably connected with L-shaped clamping plates (6), the horizontal plates of the L-shaped clamping plates (6) are arranged above the column reinforcing plate (4), the side surface of the horizontal plate of the L-shaped clamping plate (6) close to the column reinforcing plate (4) is fixedly connected with a rubber pressing plate (7), two connecting plates (8) are fixedly connected between the horizontal plates of the three L-shaped clamping plates (6), three contact plates (10) are arranged in the U-shaped placement table (3) and below the column reinforcing plate (4), the lower surface of the contact plate (10) is fixedly connected with a pushing rod (11), the lower end of the pushing rod (11) is slidably arranged through the lower surface of the U-shaped placement table (3), the lower end of the pushing rod (11) is fixedly connected with a pushing plate (12), the opposite two side surfaces of the pushing plate (12) are rotatably connected with control pushing plates (9), the other side of the control pushing plate (9) is rotatably connected with the lower side of the vertical plate of the L-shaped clamping plate (6), the upper surface of the pushing plate (12) and the lower surface of the U-shaped placement table (3) are fixedly connected with a first tension spring (13), and the first tension spring (13) is movably arranged on the outer surface of the pushing rod (11); ​ ​ The fixed clamping rod (22) is fixedly connected with a limiting plate (24) at one end in the control shell (21), the limiting plate (24) and the inner wall of the control shell (21) are fixedly connected with a second tension spring (25), the second tension spring (25) is movably sleeved on the outer surface of the fixed clamping rod (22), the lower surface of the push plate (12) is fixedly connected with a compression plate (26), the compression plate (26) is arranged in a right triangle shape, and the compression plate (26) is located at the same vertical position as the limiting groove (23); The control shell (21) is provided with a push block (28), the push block (28) is in a right trapezoidal shape, the lower side of the limiting plate (24) is in contact with the inclined surface of the push block (28), and the lower surface of the push block (28) is fixedly connected with a movable rod (27), and the lower end of the movable rod (27) slidably penetrates out of the lower surface of the control shell (21); The side surface of the slide rail base (14) facing the movable rod (27) is fixedly connected with a trigger block (20), the trigger block (20) is also arranged in a right triangle shape, the upper surface of the base (1) is fixedly connected with a limiting seat (31), the limiting seat (31) is movably sleeved with a trigger push rod (30), one end of the trigger push rod (30) is in contact with the inclined surface of the trigger block (20), and the other end of the trigger push rod (30) is rotatably connected with the lower end of the movable rod (27).

2. A welding process for an automotive pillar using the welding apparatus for an automotive pillar according to claim 1, characterized by: The specific operation steps are as follows: S1, start the servo motor (19), the servo motor (19) drives the threaded rod (18) to rotate, the slide rail base (14) is displaced in the horizontal direction under the transmission of the threaded teeth of the threaded rod (18), and the slide rail base (14) is moved to the welding station away from the standby station; S2, the external mechanical arm sucks and places the column reinforcing plate (4) on the U-shaped placement table (3), the bottom of the column reinforcing plate (4) is in contact with the contact plate (10) and forms a downward pushing force on the contact plate (10), the push rod (11) controls the downward displacement of the push plate (12), and the first tension spring (13) is stretched under the action, the push plate (12) applies a pushing force to the control push plate (9) in the process of downward displacement, so that the control push plate (9) pushes the L-shaped clamping plate (6) to extrude the surface of the column reinforcing plate (4); S2-1, in the process of downward displacement of the push plate (12), the inclined surface of the compression plate (26) first contacts one end of the fixed clamping rod (22) outside the control shell (21), in the process of continuous downward displacement of the push plate (12), the inclined surface of the compression plate (26) will extrude the fixed clamping rod (22), so that the fixed clamping rod (22) gradually shrinks into the control shell (21), and at the same time, the limiting plate (24) pulls the second tension spring (25) to stretch, when the L-shaped clamping plate (6) clamps the column reinforcing plate (4), the limiting groove (23) on the push plate (12) is located at the same horizontal position as the fixed clamping rod (22), so that the fixed clamping rod (22) is displaced into the limiting groove (23) under the pulling of the second tension spring (25). S3, the external mechanical arm in turn places the safety belt fixing support workpiece, the upper hinge workpiece and the lower hinge workpiece on the corresponding three welding positions of the column reinforcing plate (4), and the slide rail base (14) drives the multi-axis welding manipulator (15) to move to the corresponding welding station in turn to weld the placed workpieces; after the multi-axis welding manipulator (15) finishes welding, the slide rail base (14) moves to the standby station; S3-1, after the slide rail base (14) moves to the standby station, the slope of the trigger block (20) contacts and extrudes the trigger push rod (30), so that the trigger push rod (30) is displaced away from the slide rail base (14), and the control rotating plate (29) forms an upward thrust on the movable rod (27), thereby pushing the fixed clamping rod (22) out of the limit groove (23) by the pushing block (28), the L-shaped clamping plate (6) is no longer limited to the column reinforcing plate (4), and finally the external mechanical arm carries the welded column reinforcing plate (4) out.

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