Welding clamp for child seat framework

Abstract

The invention relates to the technical field of child seat welding, and discloses a child seat framework welding fixture which comprises a keel frame, an electric sliding rail is installed on the inner wall of the keel frame, a welding device is installed on the outer surface of the electric sliding rail, and a motor is fixedly connected to the inner wall of the keel frame. The output end of the motor is fixedly connected with a rotating threaded rod, the circumferential surface of the rotating threaded rod is in threaded connection with a moving frame, the inner wall of the moving frame is rotatably connected with a bidirectional threaded rod, the left side of the bidirectional threaded rod is fixedly connected with a rotating disc, and the circumferential surface of the bidirectional threaded rod is in threaded connection with a limiting plate. The limiting plate can be driven to move through rotation of the two-way threaded rod to limit and reinforce the child seat framework, framework deformation or damage caused by too large or too small local pressure is prevented, the structural integrity and stability of the framework can be maintained, and the quality of a welded part after welding is improved.

Description

Technical Field

[0001] The invention relates to the technical field of child seat welding, in particular to a welding fixture for a child seat frame. Background Art

[0002] Child seats are key equipment to ensure the safety of children in vehicles, and their quality and safety are of vital importance. This device can achieve precise positioning and reliable clamping of child seat frame components.

[0003] The patent with application number 202021003819.0 relates to a welding fixture for a child seat frame, and in particular includes a workbench, a first jacket, a second jacket and a clamp. The device is provided with a first slide and a second slide, and the first slide and the second slide are respectively provided with the first jacket and the second jacket through a threaded sleeve and a lifting rod, and the side of the second slide is slidably connected to the sliding rod on the side of the workbench, so that the first jacket can be adjusted in height and moved along the edge of the workbench, and the second jacket can be adjusted in height and on the horizontal plane of the workbench, so as to adapt to welding parts of different sizes. By setting a first telescopic rod, a second telescopic rod, a slide groove and a first rotating axis, the clamp is convenient for clamping different child seat frames, and it is also convenient to adjust the angle and orientation of the child seat frame, and it is easier to dock with the welding parts on the first jacket and the second jacket, thereby greatly improving the welding efficiency and welding accuracy. However, the device is difficult to adapt to child seat frames of different sizes when welding child seats. At the same time, the limit of the seat frame is prone to deviation, and it is difficult to adjust the welding position. Therefore, a welding fixture for a child seat frame is proposed to solve the above-mentioned problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a welding fixture for a child seat frame in view of the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a welding fixture for a child seat frame, comprising a keel frame, an electric slide rail is installed on the inner wall of the keel frame, a welding device is installed on the outer surface of the electric slide rail, the inner wall of the keel frame is fixedly connected to a motor, the output end of the motor is fixedly connected to a rotating threaded rod, the circumferential surface of the rotating threaded rod is threadedly connected to a moving frame, the inner wall of the moving frame is rotatably connected to a two-way threaded rod, the left side of the two-way threaded rod is fixedly connected to a turntable, the circumferential surface of the two-way threaded rod is threadedly connected to a limiting plate, during reinforcement, the two-way threaded rod can be rotated to drive the limiting plate to move to limit and reinforce the child seat frame, so as to prevent deformation or damage of the frame due to excessive or insufficient local pressure, help maintain the structural integrity and stability of the frame, and improve the quality of the welded parts after welding, the inner wall of the limiting plate is provided with a reinforcement mechanism for auxiliary reinforcement of the seat frame, the inner wall of the limiting plate is installed with an adjustment support plate, the inner wall of the limiting plate The cam is provided with a plurality of guide wheels, and the guide wheels are provided at two ends of the guide wheel, and the guide wheels are provided at two ends of the guide wheel, and the guide wheels are provided at two ends of the guide wheel.

[0006] Preferably, the reinforcement mechanism includes a fixed block, the inner wall of the fixed block is rotatably connected to a knocking rod through a torsion spring, the inner wall of the limit plate is rotatably connected to a connecting rod through a torsion spring, the circumferential surface of the connecting rod is fixedly connected to a rotating rod, the side of the rotating rod away from the limit plate is fixedly connected to a mortgage block, the circumference of the connecting rod is fixedly connected to a splint, and the outer surface of the limit plate is fixedly connected to the limiting block. While pressing the welded parts, the pressing plate drives the knocking rod to knock on the welded parts to shake off the welding slag, thereby improving the long-term use of the child seat frame. The safety is improved, and the welding effect is also improved; the outer surface of the limit plate is fixedly connected with a fixed block, the outer surface of the knocking rod is in contact with the limit plate, and the bottom of the pressure plate is in contact with the knocking rod. While pressing the welded part, the pressure plate drives the clamping plate to rotate to reinforce the welded part, making the welding more stable, avoiding the shaking of the seat frame during welding, and improving the welding accuracy; the bottom of the pressure plate is in contact with the mortgage block, the rotating rod is in contact with the side of the limit plate away from the clamping plate, and the clamping plate is in contact with the side of the limit plate away from the rotating rod.

[0007] Preferably, the cleaning mechanism includes a reciprocating screw rod, the circumferential surface of the reciprocating screw rod is fixedly connected to a pulley second, and the circumferential surface of the reciprocating screw rod is movably connected to a scraper. After the welding of the welding parts is completed, the scraper is driven to move back and forth by the moving frame to clean the welding slag remaining on the bottom plate, so as to further protect the equipment, make the equipment more stable when working, make the equipment more stable, and improve the working efficiency of the equipment. The inner wall of the scraper is rotatably connected to the reciprocating screw rod second, and the front and rear sides of the reciprocating screw rod second are fixedly connected to rollers. The circumferential surface of the reciprocating screw rod second is movably connected to the moving rod, and the inner wall of the moving frame is fixed A limited long rod is connected, and while the bottom plate is being cleaned, the scraper drives the moving rod to move back and forth, thereby making the cleaning area of ​​the scraper larger, preventing the occurrence of a cleaning blind spot when cleaning welding slag, improving the cleaning effect of the equipment, making the equipment work more stable, and increasing the service life of the equipment; the reciprocating screw rod 1 is rotatably connected to the inner wall of the moving frame, the circumferential surface of the pulley 2 contacts the inner wall of the keel frame, the circumferential surface of the limited long rod contacts the inner wall of the scraper, the bottom of the scraper contacts the bottom plate, the bottom of the moving rod contacts the bottom plate, the circumferential surface of the roller contacts the bottom plate, and the moving rod contacts the inner wall of the scraper.

[0008] The present invention adopts the above technical solution to bring the following beneficial effects: 1. A welding fixture for a child seat frame, through the coordinated operation of a keel frame, an electric slide rail, a welding device, a motor, a rotating threaded rod, a mobile frame, a limit plate, a two-way threaded rod, a turntable, a connecting plate, a pressure plate, a pulley, a guide plate, an adjustment plate, an adjustment bolt, and a base plate, during reinforcement, the limit plate can be driven to move by rotating the two-way threaded rod to limit and reinforce the child seat frame, thereby preventing deformation or damage to the frame due to excessive or insufficient local pressure, helping to maintain the structural integrity and stability of the frame, and improving the quality of welded parts after welding. After limiting the welded parts, the pressure plate is driven by the moving frame to press the welded parts tightly, thereby avoiding loosening of the welded parts during welding, improving the stability of the welded parts during welding, and making the welded parts safer for workers during welding.

[0009] 2. The welding fixture of the child seat frame, through the cooperation between the fixed block and the knocking rod, presses the welded parts while the pressure plate drives the knocking rod to knock the welded parts to shake off the welding slag, thereby improving the safety of the child seat frame during long-term use and improving the welding effect.

[0010] 3. The welding fixture of the child seat frame cooperates with the rotating rod, the mortgage block, the limit block, the connecting rod and the clamping plate to press the welded parts while the pressure plate drives the clamping plate to rotate to reinforce the welded parts, making the welding more stable, avoiding the shaking of the seat frame during welding, and improving the accuracy of welding.

[0011] 4. This welding fixture for a child seat frame operates through the cooperation between a reciprocating screw rod, a pulley and a scraper. After the welding of the welded parts is completed, the scraper is driven to move back and forth by the moving frame to clean the welding slag remaining on the bottom plate, thereby further protecting the equipment, making the equipment more stable during operation, making the equipment more stable at work, and improving the working efficiency of the equipment.

[0012] 5. The welding fixture of the child seat frame cooperates with the limiting long rod, the reciprocating screw rod, the roller and the moving rod to clean the bottom plate while the scraper drives the moving rod to move back and forth, thereby making the cleaning area of ​​the scraper larger and preventing the occurrence of a cleaning blind spot when cleaning the welding slag, thereby improving the cleaning effect of the equipment, making the equipment work more stable, and increasing the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the limiting plate of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center; Figure 4 This is a schematic diagram of the structure of the support plate for adjusting the present invention; Figure 5 It is a schematic diagram of the structure of the knocking rod of the present invention; Figure 6 For the present invention Figure 5 A magnified view of the structure at B in the middle; Figure 7 This is a schematic diagram of the scraper structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of the structure at C.

[0014] In the figure: 1. keel frame; 2. electric slide rail; 3. welding device; 4. motor; 5. rotating threaded rod; 6. moving frame; 7. reinforcement mechanism; 71. fixed block; 72. knocking rod; 73. rotating rod; 74. mortgage block; 75. limit block; 76. connecting rod; 77. clamping plate; 8. cleaning mechanism; 81. reciprocating screw rod 1; 82. pulley 2; 83. scraper; 84. limit long rod; 85. reciprocating screw rod 2; 86. roller; 87. moving rod; 9. limit plate; 10. two-way threaded rod; 11. turntable; 12. connecting plate; 13. pressure plate; 14. pulley 1; 15. guide plate; 16. adjustment support plate; 17. adjustment bolt; 18. bottom plate. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1 - Figure 8One embodiment of the present invention is: a welding fixture for a child seat frame, comprising a keel frame 1, an electric slide rail 2 is installed on the inner wall of the keel frame 1, a welding device 3 is installed on the outer surface of the electric slide rail 2, a motor 4 is fixedly connected to the inner wall of the keel frame 1, a rotating threaded rod 5 is fixedly connected to the output end of the motor 4, a movable frame 6 is threadedly connected to the circumferential surface of the rotating threaded rod 5, a bidirectional threaded rod 10 is rotatably connected to the inner wall of the movable frame 6, a turntable 11 is fixedly connected to the left side of the bidirectional threaded rod 10, a limiting plate 9 is threadedly connected to the circumferential surface of the bidirectional threaded rod 10, a reinforcing mechanism 7 for auxiliary reinforcement of the seat frame is provided on the inner wall of the limiting plate 9, an adjusting support plate 16 is installed on the inner wall of the limiting plate 9, and an adjusting support plate 16 is threadedly connected to the inner wall of the limiting plate 9 The inner wall of the mobile frame 6 is provided with a cleaning mechanism 8 for cleaning welding slag, and the inner wall of the mobile frame 6 is fixedly connected with a connecting plate 12. When the child seat frame is put in, the staff manually shakes the turntable 11 to rotate, and the turntable 11 drives the two-way threaded rod 10 to rotate. The two-way threaded rod 10 rotates through the circumferential thread groove to drive the limit plate 9 to move to limit and reinforce the child seat frame. After reinforcement, the adjustment bolt 17 is manually rotated to adjust the adjustment plate 16, so that the backrest angle of the child seat frame is more accurate when welding. After the child seat frame is fixed, the motor 4 is started to work. The motor 4 drives the rotating threaded rod 5 to rotate through the output end, and the rotating threaded rod 5 rotates through the circumferential thread groove. The threaded groove on the surface drives the mobile frame 6 to move to the corresponding position for welding, ensuring that the pressure is evenly distributed, preventing the skeleton from being deformed or damaged due to excessive or insufficient local pressure, helping to maintain the structural integrity and stability of the skeleton, improving the quality of the welded parts after welding, saving the adjustment time of the welded parts during welding, and further improving the welding efficiency. The inner wall of the mobile frame 6 is rotatably connected with a pressure plate 13, and pulleys 14 are installed on both sides of the pressure plate 13. The inner wall of the keel frame 1 is fixedly connected with a guide plate 15, and the bottom of the keel frame 1 is fixedly connected with a bottom plate 18. After the welded parts are limited, the pressure plate 13 is driven to move by the movement of the mobile frame 6, and the movement of the pressure plate 13 drives the pulley 14 to move. The pulley 14 moves through the circumferential surface and the guide The circumferential surface of the rotating threaded rod 5 is rotatably connected to the inner wall of the keel frame 1, and the circumferential surface of the limiting plate 9 is slidably connected to the inner wall of the movable frame 6; the circumferential surface of the adjusting bolt 17 is threadedly connected to the inner wall of the adjusting support plate 16, the outer surface of the connecting plate 12 is connected to the inner wall of the limiting plate 9, the movable frame 6 is slidably connected to the inner wall of the keel frame 1, the pressing plate 13 contacts the outer surface of the limiting plate 9, and the circumferential surface of the pulley 14 contacts the inner wall of the guide plate 15.

[0017] The reinforcement mechanism 7 includes a fixed block 71, the inner wall of the fixed block 71 is rotatably connected to a knocking rod 72 through a torsion spring, the inner wall of the limit plate 9 is rotatably connected to a connecting rod 76 through a torsion spring, and the circumferential surface of the connecting rod 76 is fixedly connected to a rotating rod 73. While the weld is being pressed, the pressing plate 13 rotates to drive the knocking rod 72 to rotate through the front inclined surface. When the weld is welded, the pressing plate 13 releases the reinforcement of the weld, and the knocking rod 72 will be reset by the torsion spring on the inner wall of the fixed block 71. The knocking rod 72 is reset to knock on the surface of the weld to shake off the welding slag, so that the quality of the weld is better, and the elimination of stress concentration can effectively extend the service life of the weld, improve the safety of the child seat frame during long-term use, and also improve the welding effect. The side of the rotating rod 73 away from the limit plate 9 is fixedly connected to a mortgage block 74, and the connecting rod 76 The circumference of the limit plate 9 is fixedly connected with a clamping plate 77, and the outer surface of the limit plate 9 is fixedly connected with a limit block 75. While pressing the welded parts, the pressure plate 13 rotates through the bottom contact surface to drive the mortgage block 74 to move, and the mortgage block 74 drives the rotating rod 73 to move. The rotating rod 73 moves through the fixed point to drive the connecting rod 76 to rotate, and the connecting rod 76 drives the clamping plate 77 to rotate to reinforce the welded parts, making the welding more stable, avoiding the shaking of the seat frame during welding, and improving the welding accuracy; the outer surface of the limit plate 9 is fixedly connected with a fixed block 71, the outer surface of the knocking rod 72 contacts the limit plate 9, and the bottom of the pressure plate 13 contacts the knocking rod 72; the bottom of the pressure plate 13 contacts the mortgage block 74, the rotating rod 73 contacts the side of the limit plate 9 away from the clamping plate 77, and the clamping plate 77 contacts the side of the limit plate 9 away from the rotating rod 73.

[0018] Working principle: When welding the child seat frame, the child frame is placed on the mobile frame 6 through a mechanical claw. After the child seat frame is placed in, the staff manually shakes the turntable 11 to rotate, and the turntable 11 drives the two-way threaded rod 10 to rotate. The rotation of the two-way threaded rod 10 drives the limit plate 9 to move through the circumferential thread groove to limit and reinforce the child seat frame. After reinforcement, the adjustment plate 16 is adjusted by manually rotating the adjustment bolt 17 to make the backrest angle of the child seat frame more accurate when welding. After the child seat frame is fixed, the motor 4 is started to work. The motor 4 drives the rotating threaded rod 5 to rotate through the output end. The rotating threaded rod 5 rotates through the circumferential thread groove to drive the mobile frame 6 to move to the corresponding position for welding. The connection ensures uniform pressure distribution, prevents deformation or damage of the skeleton due to excessive or insufficient local pressure, helps to maintain the structural integrity and stability of the skeleton, improves the quality of the welded parts after welding, saves the adjustment time of the welded parts during welding, and further improves the welding efficiency. After the welded parts are limited, the moving frame 6 moves to drive the pressure plate 13 to move, and the pressure plate 13 moves to drive the pulley 14 to move. The pulley 14 moves through the circumferential surface and contacts the inside of the guide plate 15, thereby driving the pulley 14 to move downward. The downward movement of the pulley 14 drives the pressure plate 13 to move downward to press the welded parts, avoiding loosening of the welded parts during welding, improving the stability of the welded parts during welding, and making the welded parts safer for workers during welding.

[0019] While pressing the welded parts, the pressure plate 13 rotates through the front inclined surface to drive the knocking rod 72 to rotate. When the welded parts are welded, the pressure plate 13 releases the reinforcement of the welded parts, and the knocking rod 72 will be reset through the torsion spring on the inner wall of the fixed block 71. The knocking rod 72 is reset to knock on the surface of the welded parts to shake off the welding slag, so that the quality of the welded parts is better. Eliminating stress concentration can effectively extend the service life of the welded parts, improve the safety of the child seat frame during long-term use, and also improve the welding effect. While pressing the welded parts, the pressure plate 13 rotates through the bottom contact surface to drive the mortgage block 74 to move, and the mortgage block 74 drives the rotating rod 73 to move. The rotating rod 73 moves through the fixed point to drive the connecting rod 76 to rotate, and the connecting rod 76 drives the clamping plate 77 to rotate to reinforce the welded parts, making the welding more stable, avoiding the shaking of the seat frame during welding, and improving the accuracy of welding.

[0020] See also Figure 1 - Figure 8On the basis of the above embodiment, in another embodiment of the present invention, the cleaning mechanism 8 includes a reciprocating screw rod 1 81, the circumferential surface of the reciprocating screw rod 1 81 is fixedly connected to a pulley 2 82, and the circumferential surface of the reciprocating screw rod 1 81 is movably connected to a scraper 83. When the welding of the welding parts is completed, the welding can be moved by the mechanical claw. At this time, the moving frame 6 can be reset by rotating the threaded rod 5, and the moving frame 6 moves to drive the reciprocating screw rod 1 81 to move, and the reciprocating screw rod 1 81 moves to drive the pulley 2 82 to move, and the pulley 2 82 moves through the circumferential surface and the inner wall of the keel frame 1 The rotation of the pulley 82 drives the reciprocating screw rod 81 to rotate, and the reciprocating screw rod 81 rotates to drive the scraper 83 to move back and forth through the reciprocating groove on the circumferential surface to clean the welding slag remaining on the bottom plate 18, so as to avoid excessive welding slag causing the mobile frame 6 to fail to operate normally or cause equipment damage, further protecting the equipment, making the equipment more stable when working, making the equipment more stable, and improving the working efficiency of the equipment. The inner wall of the scraper 83 is rotatably connected to the reciprocating screw rod 85, and the front and rear sides of the reciprocating screw rod 85 are fixed The movable rod 87 is movably connected to the circumferential surface of the reciprocating screw rod 85, and the inner wall of the movable frame 6 is fixedly connected to the limited position length rod 84. When the bottom plate 18 is cleaned, the scraper 83 moves to drive the reciprocating screw rod 85 to move, and the reciprocating screw rod 85 drives the roller 86 to move. The roller 86 contacts the bottom plate 18 through the circumferential surface, thereby driving the roller 86 to rotate, and the roller 86 drives the reciprocating screw rod 85 to rotate. The reciprocating screw rod 85 rotates and drives the movable rod 87 to move back and forth through the reciprocating groove on the circumferential surface, thereby making the scraper The cleaning area of ​​plate 83 is larger, which prevents the occurrence of cleaning blind spots when cleaning welding slag, improves the cleaning effect of the equipment, makes the equipment work more stably, and increases the service life of the equipment; the reciprocating screw 81 is rotatably connected to the inner wall of the movable frame 6, the circumferential surface of the pulley 82 contacts the inner wall of the keel frame 1, the circumferential surface of the limiting long rod 84 contacts the inner wall of the scraper 83, the bottom of the scraper 83 contacts the bottom plate 18, the bottom of the movable rod 87 contacts the bottom plate 18, the circumferential surface of the roller 86 contacts the bottom plate 18, and the movable rod 87 contacts the inner wall of the scraper 83.

[0021] Working principle: after the welding of the welding parts is completed, the welding is moved by the mechanical claw. At this time, the moving frame 6 can be reset by rotating the threaded rod 5, and the movement of the moving frame 6 drives the reciprocating screw rod 1 81 to move, and the movement of the reciprocating screw rod 1 81 drives the pulley 2 82 to move, and the pulley 2 82 moves through the circumferential surface to contact the inner wall of the keel frame 1, thereby driving the pulley 2 82 to rotate, and the rotation of the pulley 2 82 drives the reciprocating screw rod 1 81 to rotate, and the reciprocating screw rod 1 81 rotates through the reciprocating groove of the circumferential surface to drive the scraper 83 to reciprocate to clean the residual welding slag on the bottom plate 18, so as to avoid excessive welding slag causing the moving frame 6 to fail to operate normally or cause equipment damage, and further protect the equipment, so that the equipment The equipment is more stable when working, which makes the equipment more stable and improves the working efficiency of the equipment. While cleaning the bottom plate 18, the scraper 83 moves to drive the reciprocating screw rod 85 to move, and the reciprocating screw rod 85 drives the roller 86 to move. The roller 86 contacts the bottom plate 18 through the circumferential surface, thereby driving the roller 86 to rotate, and the roller 86 drives the reciprocating screw rod 85 to rotate. The reciprocating screw rod 85 rotates through the reciprocating groove of the circumferential surface to drive the moving rod 87 to move back and forth, thereby making the cleaning area of ​​the scraper 83 larger, preventing the occurrence of a cleaning blind spot when cleaning the welding slag, improving the cleaning effect of the equipment, making the equipment work more stable, and increasing the service life of the equipment.

[0022] The present invention provides a welding fixture for a child seat frame. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention. All components not specified in this embodiment can be implemented using existing technologies.

Claims

1. A welding fixture for a child seat frame, comprising a keel frame (1), characterized in that: The inner wall of the keel frame (1) is installed with an electric slide rail (2), the outer surface of the electric slide rail (2) is installed with a welding device (3), the inner wall of the keel frame (1) is fixedly connected with a motor (4), the output end of the motor (4) is fixedly connected with a rotating threaded rod (5), the circumferential surface of the rotating threaded rod (5) is threadedly connected with a moving frame (6), the inner wall of the moving frame (6) is rotatably connected with a bidirectional threaded rod (10), the left side of the bidirectional threaded rod (10) is fixedly connected with a turntable (11), the circumferential surface of the bidirectional threaded rod (10) is threadedly connected with a limiting plate (9), and the inner wall of the limiting plate (9) is provided with A reinforcement mechanism (7) for auxiliary reinforcement of a seat frame, the inner wall of the limit plate (9) is installed with an adjustment backing plate (16), the inner wall of the limit plate (9) is threadedly connected with an adjustment bolt (17), the inner wall of the movable frame (6) is provided with a cleaning mechanism (8) for cleaning welding slag, the inner wall of the movable frame (6) is fixedly connected with a connecting plate (12), the inner wall of the movable frame (6) is rotatably connected with a pressure plate (13), pulleys (14) are installed on both sides of the pressure plate (13), the inner wall of the keel frame (1) is fixedly connected with a guide plate (15), and the bottom of the keel frame (1) is fixedly connected with a bottom plate (18).

2. A welding fixture for a child seat frame according to claim 1, characterized in that: The circumferential surface of the rotating threaded rod (5) is rotatably connected to the inner wall of the keel frame (1), and the circumferential surface of the limiting plate (9) is slidably connected to the inner wall of the movable frame (6).

3. A welding fixture for a child seat frame according to claim 2, characterized in that: The circumferential surface of the adjusting bolt (17) is threadedly connected to the inner wall of the adjusting support plate (16), the outer surface of the connecting plate (12) is in contact with the inner wall of the limiting plate (9), the movable frame (6) is slidably connected to the inner wall of the keel frame (1), the pressure plate (13) is in contact with the outer surface of the limiting plate (9), and the circumferential surface of the pulley 1 (14) is in contact with the inner wall of the guide plate (15).

4. A welding fixture for a child seat frame according to claim 3, characterized in that: The reinforcing mechanism (7) comprises a fixed block (71), the inner wall of the fixed block (71) is rotatably connected to a knocking rod (72) via a torsion spring, the inner wall of the limit plate (9) is rotatably connected to a connecting rod (76) via a torsion spring, the circumferential surface of the connecting rod (76) is fixedly connected to a rotating rod (73), the side of the rotating rod (73) away from the limit plate (9) is fixedly connected to a mortgage block (74), the circumference of the connecting rod (76) is fixedly connected to a clamping plate (77), and the outer surface of the limit plate (9) is fixedly connected to the limit block (75).

5. A welding fixture for a child seat frame according to claim 4, characterized in that: The outer surface of the limit plate (9) is fixedly connected to a fixing block (71), the outer surface of the knocking rod (72) is in contact with the limit plate (9), and the bottom of the pressing plate (13) is in contact with the knocking rod (72).

6. A welding fixture for a child seat frame according to claim 5, characterized in that: The bottom of the pressing plate (13) contacts the mortgage block (74), the rotating rod (73) contacts the side of the limiting plate (9) away from the clamping plate (77), and the clamping plate (77) contacts the side of the limiting plate (9) away from the rotating rod (73).

7. A welding fixture for a child seat frame according to claim 6, characterized in that: The cleaning mechanism (8) comprises a reciprocating screw rod (81), the circumferential surface of the reciprocating screw rod (81) is fixedly connected to a pulley (82), the circumferential surface of the reciprocating screw rod (81) is movably connected to a scraper (83), the inner wall of the scraper (83) is rotatably connected to a reciprocating screw rod (85), the front and rear sides of the reciprocating screw rod (85) are fixedly connected to rollers (86), the circumferential surface of the reciprocating screw rod (85) is movably connected to a moving rod (87), and the inner wall of the moving frame (6) is fixedly connected to a limited length rod (84).

8. A welding fixture for a child seat frame according to claim 7, characterized in that: The reciprocating screw rod 1 (81) is rotatably connected to the inner wall of the movable frame (6), the circumferential surface of the pulley 2 (82) contacts the inner wall of the keel frame (1), the circumferential surface of the limiting long rod (84) contacts the inner wall of the scraper (83), the bottom of the scraper (83) contacts the bottom plate (18), the bottom of the movable rod (87) contacts the bottom plate (18), the circumferential surface of the roller (86) contacts the bottom plate (18), and the movable rod (87) contacts the inner wall of the scraper (83).

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