A welding fixture for an automobile side wall inner plate front assembly

Abstract

The present application relates to the technical field of automobile accessory processing, in particular to a kind of automobile side wall inner plate front assembly welding fixture, including base, support frame, positioning mechanism, transverse clamping mechanism, longitudinal clamping mechanism, rotating mechanism and jacking mechanism, support frame is fixedly installed in the top of base, positioning mechanism is fixedly installed in the top of support frame, positioning mechanism is used to hold positioning to side wall inner plate, transverse clamping mechanism is fixedly installed in the top of positioning mechanism, transverse clamping mechanism is used to hold fixed to the left and right sides of side wall inner plate, longitudinal clamping mechanism is fixedly installed in the top of positioning mechanism.The automobile side wall inner plate front assembly welding fixture, positioning mechanism and jacking mechanism are moved simultaneously by the rotating mechanism set, so that the column one, column two and column three in positioning mechanism move, hold positioning to the periphery of side wall inner plate, so that the working efficiency and positioning accuracy of welding fixture are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile accessory processing, in particular to a welding clamp for automobile side wall inner plate front assembly. BACKGROUND

[0002] The automobile side wall inner plate front assembly is an important component of the automobile body side wall structure, which is located in the front area of the automobile body side, usually extending from the front of the car to the front of the door, this area plays a key connecting role in the automobile body structure, connecting the front structure of the automobile and the door area, the manufacturing process of the automobile side wall inner plate front assembly can be divided into stamping, welding and painting, first the metal plate is stamped, then the stamped parts are combined together through welding process, the commonly used welding methods include spot welding and arc welding, finally the welded side wall inner plate front assembly is painted.

[0003] And considering that the existing side wall inner plate needs to be assembled and fixed during the welding process in order to facilitate subsequent welding, when fixing the parts, the workers need to position the parts to avoid large size deviation of the welded parts, therefore the workers need to adjust the position of the parts multiple times, which reduces the processing efficiency and positioning accuracy of the part welding, and further reduces the assembly accuracy of the whole vehicle. SUMMARY

[0004] The purpose of the present application is to provide a welding clamp for automobile side wall inner plate front assembly.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] The utility model provides a kind of automobile side wall inner plate front assembly welding clamp, including base, support frame, positioning mechanism, transverse clamping mechanism, longitudinal clamping mechanism, rotating mechanism and jacking mechanism, support frame is fixedly installed on the top of base, positioning mechanism is fixedly installed on the top of support frame, positioning mechanism is used to hold and position side wall inner plate, transverse clamping mechanism is fixedly installed on the top of positioning mechanism, transverse clamping mechanism is used to hold and fix the left and right sides of side wall inner plate, longitudinal clamping mechanism is fixedly installed on the top of positioning mechanism, longitudinal clamping mechanism is used to hold and fix the front and back sides of side wall inner plate, rotating mechanism is fixedly installed on the top of base, rotating mechanism is used to drive positioning mechanism and jacking mechanism movement, jacking mechanism is slidably installed on positioning mechanism, jacking mechanism is used to lift side wall inner plate, to facilitate staff to take side wall inner plate, positioning mechanism includes workbench, sleeve, connecting rod one, stand one, fixed link, articulated link, stand two, rotating shaft, connecting rod two and stand three, workbench is fixedly installed on the top of support frame, fixed link is fixedly installed on the right side of sleeve, the left end of articulated link is hinged with the right end of fixed link, the right end of articulated link is rotatably connected with the bottom of stand two, connecting rod one is fixedly installed on the back of sleeve, stand one is fixedly installed on the rear end of connecting rod one, the outer periphery of rotating shaft is rotatably connected with the inside of sleeve, connecting rod two is fixedly installed on the back top end of rotating shaft, stand three is fixedly installed on the rear end of connecting rod two.

[0007] Further, the transverse clamping mechanism includes a fixed seat one, a pressing plate one, a cylindrical rod, a moving rod, a movable rod, a guide rod and a spring, the fixed seat one is fixedly installed on the top right end of the workbench, the bottom of the pressing plate one is hinged with the top of the fixed seat one, the top end of the cylindrical rod is movably connected with the right inner side of the pressing plate one, the bottom left side of the cylindrical rod is hinged with the bottom end of the movable rod, the top end of the movable rod is hinged with the bottom of the moving rod, the bottom right side inner wall of the cylindrical rod is slidably connected with the outer periphery of the guide rod, one end of the spring is fixedly connected with the bottom right end of the workbench, the other end of the spring is fixedly installed on the bottom right side of the cylindrical rod.

[0008] Further, the outer periphery of the cylindrical rod is slidably connected with the inside of the fixed seat one, the outer periphery of the cylindrical rod penetrates and is slidably connected with the top right end inner wall of the workbench, the top end of the moving rod is slidably connected with the top inner side of the workbench, the top end of the guide rod is fixedly installed on the bottom right end of the workbench.

[0009] Further, the longitudinal clamping mechanism comprises an arc-shaped plate, a mounting column, a fixed seat two, a pressing plate two, a lifting rod, a sliding block one and a sliding block two, the fixed seat two is fixedly installed at the top rear end of the workbench, the bottom of the pressing plate two is hingedly connected to the top of the fixed seat two, the top end of the lifting rod is movably connected to the inner side of the rear end of the pressing plate two, the outer wall of the lifting rod is fixedly connected to the outer wall of the arc-shaped plate, the inner side of the arc-shaped plate is slidably connected to the outer periphery of the mounting column, the bottom of the mounting column is fixedly connected to the top rear end of the workbench, the outer periphery of the lifting rod is slidably connected to the inner side of the fixed seat two, the outer wall of the sliding block one is slidably connected to the inner side of the arc-shaped plate, and the outer wall of the sliding block two is slidably connected to the inner side of the arc-shaped plate.

[0010] Further, the jacking mechanism comprises a cylindrical shaft, a square rod, a jacking rod and a telescopic rod, the telescopic rod is fixedly installed at the left end of the cylindrical shaft, the top end of the telescopic rod is hingedly connected to the right side front end of the square rod, the bottom of the jacking rod is fixedly installed at the top of the square rod, and the outer periphery of the jacking rod penetrates through the inner side of the top of the workbench and is in sliding connection.

[0011] Further, the rotating mechanism comprises a shell, a motor, a bevel gear one, a bevel gear two and a bevel gear three, the bottom of the motor is fixedly installed at the top of the base, the output shaft of the motor is fixedly connected to the bottom of the rotating shaft, the inner side of the bevel gear one penetrates through the outer wall of the rotating shaft and is fixedly connected, the inner side of the bevel gear two penetrates through the right end of the cylindrical shaft and is fixedly connected, the top of the bevel gear three is fixedly installed at the bottom of the sleeve, and the bottom of the shell is fixedly connected to the top of the base.

[0012] Further, the outer periphery of the cylindrical shaft penetrates through the left side inner wall of the shell and is rotatably connected, the outer periphery of the sleeve penetrates through the top inner wall of the shell and is rotatably connected, the bevel gear one is engaged with the bevel gear two, and the bevel gear two is engaged with the bevel gear three.

[0013] Further, the top of the workbench is provided with an arc-shaped groove, the outer periphery of the stand one is slidably connected to the inner side of the arc-shaped groove, the outer periphery of the stand three is slidably connected to the inner side of the arc-shaped groove, the outer periphery of the stand two is slidably connected to the inner side of the top of the workbench, the outer wall of the stand one is fixedly connected to the outer wall of the sliding block one, and the outer wall of the stand three is fixedly connected to the outer wall of the sliding block two.

[0014] The beneficial effects of the present application: the automobile side wall inner plate front assembly welding clamp, through the setting of the rotating mechanism, can drive the positioning mechanism and the jacking mechanism to move at the same time, so that the rotating shaft and the sleeve in the positioning mechanism rotate, and then drive the column one, the column two and the column three to move, clamp and position the four around the side wall inner plate, so that the working efficiency and positioning accuracy of the welding clamp are improved, at the same time, the column two can drive the transverse clamping mechanism to move in the moving process, clamp and fix the side wall inner plate in the transverse direction, and the column one and the column three can drive the longitudinal clamping mechanism to move in the moving process, clamp and fix the side wall inner plate in the longitudinal direction, so that the side wall inner plate can maintain good fixing effect, and the working efficiency and use effect of the welding clamp are further improved, in addition, through the setting of the jacking mechanism, the side wall inner plate after welding can be jacked up to cool, at the same time, it is convenient for the workers to clean the welding slag attached to the side wall inner plate, and it is convenient to take the side wall inner plate from the welding clamp, so that the use effect of the welding clamp is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows.

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0017] Figure 2 It is a whole front view structure schematic diagram of the present application;

[0018] Figure 3 It is a sleeve front view structure schematic diagram of the present application;

[0019] Figure 4 It is a rotating shaft front view structure schematic diagram of the present application;

[0020] Figure 5 It is a transverse clamping mechanism front view structure schematic diagram of the present application;

[0021] Figure 6 It is a longitudinal clamping mechanism front view structure schematic diagram of the present application;

[0022] Figure 7 It is a Figure 6 A part of the structure schematic diagram of the present application;

[0023] Figure 8 It is a jacking mechanism front view structure schematic diagram of the present application;

[0024] Figure 9 It is a shell cross-sectional structure schematic diagram of the present application.

[0025] In the figure: 1, base; 2, support frame; 3, positioning mechanism; 31, workbench; 32, sleeve; 33, connecting rod one; 34, stand one; 35, fixed rod; 36, articulated rod; 37, stand two; 38, rotating shaft; 39, connecting rod two; 310, stand three; 4, transverse clamping mechanism; 41, fixed seat one; 42, pressing plate one; 43, cylindrical rod; 44, moving rod; 45, movable rod; 46, guide rod; 47, spring; 5, longitudinal clamping mechanism; 51, arc plate; 52, mounting column; 53, fixed seat two; 54, pressing plate two; 55, lifting rod; 56, sliding block one; 57, sliding block two; 6, rotating mechanism; 61, housing; 62, motor; 63, bevel gear one; 64, bevel gear two; 65, bevel gear three; 7, jacking mechanism; 71, cylindrical shaft; 72, square rod; 73, jacking rod; 74, telescopic rod. DETAILED DESCRIPTION

[0026] The technical solutions of the present application are further illustrated below in combination with the drawings and through specific embodiments.

[0027] Wherein, the drawings are only used for exemplary illustration, the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the present patent; in order to better illustrate the embodiments of the present application, some components of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product.

[0028] Reference Figures 1 to 2The automobile side wall inner plate front assembly welding clamp shown in the application comprises a base 1, a support frame 2, a positioning mechanism 3, a transverse clamping mechanism 4, a longitudinal clamping mechanism 5, a rotating mechanism 6 and a jacking mechanism 7. The support frame 2 is fixedly installed on the top of the base 1. The positioning mechanism 3 is fixedly installed on the top of the support frame 2. The positioning mechanism 3 is used for clamping and positioning the side wall inner plate, thereby improving the dimensional accuracy of the side wall inner plate during the welding process. The transverse clamping mechanism 4 is fixedly installed on the top of the positioning mechanism 3. The transverse clamping mechanism 4 is used for clamping and fixing the left and right sides of the side wall inner plate, thereby further limiting the transverse position of the side wall inner plate and preventing the side wall inner plate from deviating during the welding process. The longitudinal clamping mechanism 5 is fixedly installed on the top of the positioning mechanism 3. The longitudinal clamping mechanism 5 is used for clamping and fixing the front and back sides of the side wall inner plate, thereby further limiting the longitudinal position of the side wall inner plate and preventing the side wall inner plate from deviating during the welding process. The rotating mechanism 6 is fixedly installed on the top of the base 1. The rotating mechanism 6 is used for driving the positioning mechanism 3 and the jacking mechanism 7 to move. The positioning mechanism 3 and the jacking mechanism 7 work simultaneously through the rotating mechanism 6, thereby improving the smoothness and work efficiency of the welding clamp during work. The jacking mechanism 7 is slidably installed on the positioning mechanism 3. The jacking mechanism 7 is used for jacking up the side wall inner plate, thereby facilitating the workers to take the side wall inner plate. At the same time, the jacking mechanism 7 lifts the welded side wall inner plate, thereby facilitating the workers to clean the welding slag and improving the cooling effect of the side wall inner plate.

[0029] Referring to 1 to Figure 4The positioning mechanism 3 comprises a workbench 31, a sleeve 32, a connecting rod one 33, a stand one 34, a fixed rod 35, a hinged rod 36, a stand two 37, a rotating shaft 38, a connecting rod two 39 and a stand three 310, the workbench 31 is fixedly installed at the top of the support frame 2, plays a supporting and fixing role on the transverse clamping mechanism 4 and the longitudinal clamping mechanism 5 through the workbench 31, the fixed rod 35 is fixedly installed at the right side of the sleeve 32, the fixed rod 35 is symmetrically distributed in two groups, through the rotating effect of the sleeve 32, two groups of fixed rods 35 can be driven to rotate at the same time, the left end of the hinged rod 36 is hinged with the right end of the fixed rod 35, the hinged rod 36 is symmetrically distributed in two groups, when the fixed rod 35 rotates, the hinged rod 36 can be driven to move, the right end of the hinged rod 36 is rotatably connected with the bottom of the stand two 37, the stand two 37 is symmetrically distributed in two groups, when the hinged rod 36 moves, the stand two 37 can be driven to move, the connecting rod one 33 is fixedly installed at the back of the sleeve 32, the connecting rod one 33 is staggered in two groups, when the sleeve 32 rotates, two groups of connecting rods one 33 can be driven to rotate at the same time, the stand one 34 is fixedly installed at the rear end of the connecting rod one 33, the stand one 34 is staggered in two groups, when the connecting rod one 33 rotates, the stand one 34 can be driven to move, the outer periphery of the rotating shaft 38 is rotatably connected with the inner side of the sleeve 32, the connecting rod two 39 is fixedly installed at the back top end of the rotating shaft 38, the connecting rod two 39 is staggered in two groups, when the rotating shaft 38 rotates, two groups of connecting rods two 39 can be driven to rotate at the same time, the stand three 310 is fixedly installed at the rear end of the connecting rod two 39, the stand three 310 is staggered in two groups, when the connecting rod two 39 rotates, the stand three 310 can be driven to move.

[0030] Referring to Figure 2 and Figure 5The transverse clamping mechanism 4 comprises a fixed seat one 41, a pressing plate one 42, a cylindrical rod 43, a moving rod 44, a movable rod 45, a guide rod 46 and a spring 47. The fixed seat one 41 is fixedly installed at the top right end of the workbench 31. The fixed seat one 41 and the pressing plate one 42 are symmetrically distributed in four groups along the center line of the workbench 31, and the clamping surfaces of the fixed seat one 41 and the pressing plate one 42 are made of rubber. The bottom of the pressing plate one 42 is hingedly connected to the top of the fixed seat one 41. The top end of the cylindrical rod 43 is movably connected to the inner side of the right end of the pressing plate one 42. The vertical movement of the cylindrical rod 43 can drive the pressing plate one 42 to rotate around the hinge point, so as to clamp and fix the side wall inner plate. The bottom left side of the cylindrical rod 43 is hingedly connected to the bottom end of the movable rod 45. When the movable rod 45 moves, it can drive the cylindrical rod 43 to move vertically. The top end of the movable rod 45 is hingedly connected to the bottom of the moving rod 44. The horizontal movement of the moving rod 44 can drive the movable rod 45 to move. The bottom right side of the cylindrical rod 43 is slidingly connected to the outer periphery of the guide rod 46. The guide rod 46 guides the cylindrical rod 43 to prevent it from deviating during movement. One end of the spring 47 is fixedly connected to the bottom right end of the workbench 31, and the other end of the spring 47 is fixedly installed at the bottom right side of the cylindrical rod 43. The spring force of the spring 47 always keeps the cylindrical rod 43 sliding downward under the action of no external force, so as to drive the pressing plate one 42 to move upward and release the clamping effect on the side wall inner plate.

[0031] With reference to Figure 5 The outer periphery of the cylindrical rod 43 is slidingly connected to the inner side of the fixed seat one 41, and the outer periphery of the cylindrical rod 43 penetrates and slidingly connects to the inner wall of the top right end of the workbench 31. The cylindrical rod 43 is symmetrically distributed in four groups along the center line of the workbench 31. The top end of the moving rod 44 is slidingly connected to the inner side of the top of the workbench 31. The workbench 31 guides the moving rod 44 to prevent it from deviating during movement. The top end of the guide rod 46 is fixedly installed at the bottom right end of the workbench 31. When the two groups of stand columns two 37 approach each other to clamp and position the side wall inner plate, the stand column two 37 will contact the moving rod 44 during movement, so that the stand column two 37 can extrude the moving rod 44 to move, and the pressing plate one 42 and the fixed seat one 41 clamp the side wall inner plate.

[0032] With reference to Figure 6 and Figure 7The longitudinal clamping mechanism 5 comprises an arc-shaped plate 51, a mounting column 52, a fixed seat two 53, a pressing plate two 54, a lifting rod 55, a sliding block one 56 and a sliding block two 57. The fixed seat two 53 is fixedly installed at the top rear end of the workbench 31. The fixed seat two 53 and the pressing plate two 54 are symmetrically distributed in two groups along the center line of the workbench 31. The clamping surfaces of the fixed seat two 53 and the pressing plate two 54 are made of rubber. The bottom of the pressing plate two 54 is hingedly connected to the top of the fixed seat two 53. The top end of the lifting rod 55 is movably connected to the inner side of the rear end of the pressing plate two 54. The vertical movement of the lifting rod 55 can drive the pressing plate two 54 to rotate along the hinge point, so that the side wall inner plate can be clamped and fixed. The outer wall of the lifting rod 55 is fixedly connected to the outer wall of the arc-shaped plate 51. The lifting rod 55 is symmetrically distributed in two groups along the center line of the workbench 31. The inner side of the arc-shaped plate 51 is slidably connected to the outer periphery of the mounting column 52. The arc-shaped plate 51 is symmetrically distributed in two groups. Each group of arc-shaped plates 51 is symmetrically distributed with two groups of mounting columns 52. The vertical sliding of the arc-shaped plate 51 can drive the lifting rod 55 to move vertically. The bottom of the mounting column 52 is fixedly connected to the top rear end of the workbench 31. The mounting column 52 guides the arc-shaped plate 51 to avoid deviation during movement. The outer periphery of the lifting rod 55 is slidably connected to the inner side of the fixed seat two 53. The outer wall of the sliding block one 56 is slidably connected to the inner side of the arc-shaped plate 51. The outer wall of the sliding block two 57 is slidably connected to the inner side of the arc-shaped plate 51. The sliding block one 56 and the sliding block two 57 are staggered in two groups. The sliding block one 56 and the sliding block two 57 are provided with inclined surfaces. The sliding of the sliding block one 56 and the sliding block two 57 can lift the arc-shaped plate 51, so that the lifting rod 55 can be driven to move upward.

[0033] With reference to Figure 2 and Figure 8 The jacking mechanism 7 comprises a cylindrical shaft 71, a square rod 72, a jacking rod 73 and a telescopic rod 74. The telescopic rod 74 is fixedly installed at the left end of the cylindrical shaft 71. The cylindrical shaft 71 is symmetrically distributed in two groups. The telescopic rod 74 is staggered in two groups. The top end of the telescopic rod 74 is hingedly connected to the right side front end of the square rod 72. When the telescopic rod 74 rotates, the square rod 72 can be driven to move vertically. The bottom of the jacking rod 73 is fixedly installed at the top of the square rod 72. The square rod 72 is symmetrically distributed in two groups. Each group of square rods 72 is provided with two groups of jacking rods 73. The outer periphery of the jacking rod 73 penetrates and slidably connects to the inner side of the top of the workbench 31. When the cylindrical shaft 71 rotates, the telescopic rod 74 can be driven to rotate, so that the square rod 72 can drive the jacking rod 73 to move vertically, and then the jacking rod 73 can be lifted to the side wall inner plate after welding.

[0034] With reference to Figure 2 and Figure 9The rotating mechanism 6 comprises a shell 61, a motor 62, a bevel gear one 63, a bevel gear two 64 and a bevel gear three 65. The bottom of the motor 62 is fixedly installed on the top of the base 1. The output shaft of the motor 62 is fixedly connected with the bottom of the rotating shaft 38. By starting the motor 62, the rotating shaft 38 can be driven to rotate. The inner side of the bevel gear one 63 is fixedly penetrated through and fixedly connected with the outer wall of the rotating shaft 38. By the rotating effect of the rotating shaft 38, the bevel gear one 63 can be driven to rotate. The inner side of the bevel gear two 64 is fixedly penetrated through and fixedly connected with the right end of the cylindrical shaft 71. The bevel gear two 64 is symmetrically provided with two groups. By the rotating effect of the bevel gear two 64, the cylindrical shaft 71 can be driven to rotate. The top of the bevel gear three 65 is fixedly installed on the bottom of the sleeve 32. By the rotating effect of the bevel gear three 65, the sleeve 32 can be driven to rotate. The bottom of the shell 61 is fixedly connected with the top of the base 1. The shell 61 plays a protective role on the motor 62, the bevel gear one 63, the bevel gear two 64 and the bevel gear three 65.

[0035] With reference to Figure 9 The outer periphery of the cylindrical shaft 71 is penetrated through and rotationally connected with the left side inner wall of the shell 61. The outer periphery of the sleeve 32 is penetrated through and rotationally connected with the top inner wall of the shell 61. The bevel gear one 63 is engaged with the bevel gear two 64. The bevel gear two 64 is engaged with the bevel gear three 65. When the rotating shaft 38 rotates, the bevel gear one 63 can be driven to rotate. By the bevel gear one 63, the two groups of bevel gear two 64 are simultaneously driven to rotate in opposite directions. By the rotating effect of the two groups of bevel gear two 64, the bevel gear three 65 can be driven to rotate, so that the rotating directions of the bevel gear three 65 and the bevel gear one 63 are opposite.

[0036] With reference to Figure 1 and Figure 6 The top of the workbench 31 is provided with an arc-shaped groove. The arc-shaped groove is symmetrically provided with two groups. The outer periphery of the stand column one 34 is slidingly connected on the inner side of the arc-shaped groove. By the rotating effect of the sleeve 32, the stand column one 34 is driven to slide along the inner side of the arc-shaped groove. The outer periphery of the stand column three 310 is slidingly connected on the inner side of the arc-shaped groove. By the rotating effect of the rotating shaft 38, the stand column three 310 is driven to slide along the inner side of the arc-shaped groove. The outer periphery of the stand column two 37 is slidingly connected with the top inner side of the workbench 31. The workbench 31 plays a guiding role on the stand column two 37. The outer wall of the stand column one 34 is fixedly connected with the outer wall of the sliding block one 56. By the stand column one 34, the sliding block one 56 is driven to slide along the inner side of the arc-shaped groove. The outer wall of the stand column three 310 is fixedly connected with the outer wall of the sliding block two 57. By the stand column three 310, the sliding block two 57 is driven to slide along the inner side of the arc-shaped groove.

[0037] The automobile side wall inner plate front assembly welding clamp can drive the positioning mechanism and the jacking mechanism to move simultaneously through the rotation mechanism, so that the rotating shaft and the sleeve in the positioning mechanism rotate, and then drive the first column, the second column and the third column to move, clamping and positioning the periphery of the side wall inner plate, so that the working efficiency and positioning accuracy of the welding clamp are improved, and the second column can drive the transverse clamping mechanism to move in the moving process, clamping and fixing the side wall inner plate in the transverse direction, and the first column and the third column can drive the longitudinal clamping mechanism to move in the moving process, clamping and fixing the side wall inner plate in the longitudinal direction, so that the side wall inner plate can maintain good fixing effect, and the working efficiency and use effect of the welding clamp are further improved, and through the setting of the jacking mechanism, the side wall inner plate after welding can be jacked up for cooling, and it is also convenient for workers to clean the welding slag attached to the side wall inner plate, and the side wall inner plate can be taken off from the welding clamp, so that the use effect of the welding clamp is further improved.

[0038] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. An automotive side inner panel front assembly welding fixture, characterized by, The utility model provides a kind of side wall inner plate positioning device, including base, support frame, positioning mechanism, transverse clamping mechanism, longitudinal clamping mechanism, rotating mechanism and jacking mechanism, support frame is fixedly installed on the top of base, positioning mechanism is fixedly installed on the top of support frame, positioning mechanism is used to hold and position side wall inner plate, transverse clamping mechanism is fixedly installed on the top of positioning mechanism, transverse clamping mechanism is used to hold and fix the left and right sides of side wall inner plate, longitudinal clamping mechanism is fixedly installed on the top of positioning mechanism, longitudinal clamping mechanism is used to hold and fix the front and back sides of side wall inner plate, rotating mechanism is fixedly installed on the top of base, rotating mechanism is used to drive positioning mechanism and jacking mechanism movement, jacking mechanism is slidably installed on positioning mechanism, jacking mechanism is used to lift side wall inner plate, so as to facilitate staff to take side wall inner plate, positioning mechanism includes workbench, sleeve, connecting rod one, stand one, fixed rod, articulated rod, stand two, rotating shaft, connecting rod two and stand three, workbench is fixedly installed on the top of support frame, fixed rod is fixedly installed on the right side of sleeve, the left end of articulated rod is hinged with the right end of fixed rod, the right end of articulated rod is rotatably connected with the bottom of stand two, connecting rod one is fixedly installed on the back of sleeve, stand one is fixedly installed on the rear end of connecting rod one, the outer periphery of rotating shaft is rotatably connected with the inner side of sleeve, connecting rod two is fixedly installed on the back top end of rotating shaft, stand three is fixedly installed on the rear end of connecting rod two; Transverse clamping mechanism includes fixed seat one, pressing plate one, cylindrical rod, moving rod, movable rod, guide rod and spring, fixed seat one is fixedly installed on the top right end of workbench, the bottom of pressing plate one is hinged with the top of fixed seat one, the top end of cylindrical rod is movably connected with the right end inner side of pressing plate one, the bottom end left side of cylindrical rod is hinged with the bottom end of movable rod, the top end of movable rod is hinged with the bottom of moving rod, stand two will contact with moving rod in the process of moving, the bottom end right side inner wall of cylindrical rod is slidably connected with the outer periphery of guide rod, one end of spring is fixedly connected with the bottom right end of workbench, the other end of spring is fixedly installed on the bottom end right side of cylindrical rod; Longitudinal clamping mechanism includes arc plate, mounting column, fixed seat two, pressing plate two, lifting rod, sliding block one and sliding block two, fixed seat two is fixedly installed on the top rear end of workbench, the bottom of pressing plate two is hinged with the top of fixed seat two, the top end of lifting rod is movably connected with the rear end inner side of pressing plate two, the outer wall of lifting rod is fixedly connected with the outer wall of arc plate, the inner side of arc plate is slidably connected with the outer periphery of mounting column, the bottom of mounting column is fixedly connected with the top rear end of workbench, the outer periphery of lifting rod is slidably connected with the inner side of fixed seat two, the outer wall of sliding block one is slidably connected with the inner side of arc plate, the outer wall of sliding block two is slidably connected with the inner side of arc plate, the outer wall of stand one is fixedly connected with the outer wall of sliding block one, the outer wall of stand three is fixedly connected with the outer wall of sliding block two, sliding block one and sliding block two are all provided with inclined surface, through the sliding effect of sliding block one and sliding block two, arc plate can be lifted, so as to drive lifting rod to move upwards; The rotating mechanism comprises a shell, a motor, a bevel gear one, a bevel gear two and a bevel gear three, the inner side of the bevel gear one is penetrated through and fixedly connected with the outer wall of the rotating shaft, the top of the bevel gear three is fixedly installed at the bottom of the sleeve, and the rotating directions of the bevel gear three and the bevel gear one are opposite.

2. The welding fixture for the front assembly of the inner side wall of an automobile as set forth in claim 1, wherein The outer periphery of the cylindrical rod is slidably connected with the inner side of the fixed seat one, the outer periphery of the cylindrical rod is penetrated through and slidably connected with the inner wall of the top right end of the workbench, the top end of the moving rod is slidably connected with the inner side of the top of the workbench, and the top end of the guide rod is fixedly installed at the bottom right end of the workbench.

3. The welding fixture for the front part of the inner side wall of a car as set forth in claim 1, wherein The jacking mechanism comprises a cylindrical shaft, a square rod, a jacking rod and an extension rod, the extension rod is fixedly installed at the left end of the cylindrical shaft, the top end of the extension rod is hingedly connected with the right side front end of the square rod, the bottom of the jacking rod is fixedly installed at the top of the square rod, and the outer periphery of the jacking rod is penetrated through and slidably connected with the inner side of the top of the workbench.

4. The welding fixture for the front part of the inner side wall of an automobile according to claim 3, characterized in that, The bottom of the motor is fixedly installed at the top of the base, the output shaft of the motor is fixedly connected with the bottom of the rotating shaft, the inner side of the bevel gear two is penetrated through and fixedly connected with the right end of the cylindrical shaft, the top of the bevel gear three is fixedly installed at the bottom of the sleeve, and the bottom of the shell is fixedly connected with the top of the base.

5. The welding fixture for the front part of the inner side wall of a car as set forth in claim 4, wherein The outer periphery of the cylindrical shaft is penetrated through and rotationally connected with the left side inner wall of the shell, the outer periphery of the sleeve is penetrated through and rotationally connected with the top inner wall of the shell, the bevel gear one is engaged with the bevel gear two, and the bevel gear two is engaged with the bevel gear three.

6. The welding fixture for the front part of the inner side wall of an automobile as set forth in claim 1, characterized in that The top of the workbench is provided with an arc-shaped groove, the outer periphery of the stand one is slidably connected with the inner side of the arc-shaped groove, the outer periphery of the stand three is slidably connected with the inner side of the arc-shaped groove, and the outer periphery of the stand two is slidably connected with the inner side of the top of the workbench.

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