A parallel seam welding fixture for fan casing

Abstract

The present invention belongs to the technical field of welding fixtures, and specifically is a parallel seam welding fixture for a fan casing, comprising a base; a fixed disc seat is rotatably installed on the top of the base; a placement groove is provided on the top surface of the fixed disc seat; a column is fixedly connected to the middle of the placement groove; a plurality of positioning grooves are provided around the bottom surface of the placement groove; radial metal wires of a fan blade casing are placed in the placement grooves on the top of the fixed disc seat, so that the inner ring of the fan blade casing is sleeved on the outer ring of the column, and the metal wires are respectively stuck in the positioning grooves, limiting the position of each metal wire, and then placing the metal ring on the outer ring of the metal wire, so that the metal ring contacts each metal wire; the fixed disc seat is rotated, and at the same time, the welding equipment welds the contact portion between the metal ring and the metal wire; thereby controlling the spacing between the metal wires, facilitating the operation of the staff, improving the work efficiency, and improving the quality of the fan.

Description

Technical Field

[0001] The invention belongs to the technical field of welding fixtures, in particular to a parallel seam welding fixture for a fan casing. Background Art

[0002] A fan is a common household appliance, mainly used for cooling and circulating air; a common fan is mainly composed of a control structure, a motor, fan blades and a casing; the fan blades are wrapped and protected by two halves of a mesh casing to prevent users from being injured by the rotating fan blades.

[0003] The outer shell of the fan blade is mainly composed of multiple metal wires in a radial shape, and metal rings are welded on the radial metal wires; when welding the outer shell of the fan blade, first weld the radial metal wires on the outer ring of a circular ring, bend the metal wires into an arc, and then distribute the formed metal wires equidistantly, weld the metal rings to the radial metal wires, so that the outer shell is welded into shape.

[0004] During the welding process of the outer shell, workers are required to adjust and control the spacing between the metal wires. Manual operation can easily cause differences in the spacing between the metal wires, resulting in differences in the size of the gaps in the fan blade outer shell, affecting the product quality of the fan.

[0005] To this end, the present invention provides a fan casing parallel seam welding fixture. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a parallel seam welding fixture for a fan casing described in the present invention comprises a base; the base is bolted to a welding device; a fixed disc seat is rotatably installed on the top of the base; a placement groove is provided on the top surface of the fixed disc seat; the shape of the placement groove matches the shape of the outer casing of the fan blade; a column is fixedly connected to the middle of the placement groove; the column matches the inner ring of the outer casing of the fan blade; a plurality of positioning grooves are provided around the bottom surface of the placement groove; the positioning grooves are radially arranged; the positioning grooves match the radial metal wires of the outer casing of the fan blade; the spacing between the metal wires is controlled, which is convenient for the operation of the staff, improves the work efficiency, and improves the quality of the fan at the same time.

[0008] Preferably, the bottom outer ring of the fixed disc seat is fixed with a gear ring; the outer wall of the base is fixed with a motor; the outer ring of the motor's rotating shaft is fixed with a gear; the gear is meshed with the gear ring; accurate welding of the welding equipment is facilitated, and the quality of welding is improved.

[0009] Preferably, a clamping unit is provided at the top of the column; the clamping unit includes a rotating groove; a plurality of the rotating grooves are opened on the top outer ring of the column; the rotating groove corresponds to the positioning groove; a pressure rod is rotatably installed inside the rotating groove; the end of the pressure rod away from the column can be rotatably slid into the positioning groove; a torsion spring is provided on the outer ring of the rotating shaft of the pressure rod; a driving assembly is provided in the middle of the column, and the driving assembly drives the pressure rod to rotate.

[0010] Preferably, the driving assembly includes a circular groove; the circular groove is opened at the top of the column; the bottom end of the circular groove is fixedly connected to an electric push rod No. 1; the top of the electric push rod No. 1 is fixedly connected to a top plate; a connecting hole is opened between the circular groove and the rotating groove; a plurality of pull ropes are fixedly connected around the outer circle of the bottom surface of the top plate; the pull ropes slide through the connecting hole; the bottom end of the pull rope is fixedly connected to a side of the bottom of the pressure rod away from the circular groove; the pressure rod presses the metal wire tightly in the positioning groove, thereby preventing the metal wire from moving out of the positioning groove due to deformation, and avoiding welding leaks between the metal wire and the metal ring.

[0011] Preferably, a plurality of pairs of arc-shaped elastic clips are evenly fixed to one side of the pressure rod close to the positioning groove; each pair of the elastic clips matches the radial metal wire of the fan blade shell; thereby improving the accuracy of fixing the metal wire to the inside of the positioning groove.

[0012] Preferably, a U-shaped clamping plate is fixedly connected to the top of the rotating groove; inner grooves are provided on both sides of the U-shaped clamping plate; the position of the compression rod after contraction is limited, and the probability of the compression rod accidentally rotating and unfolding is reduced.

[0013] Preferably, a No. 1 slide groove is provided on both sides of the column; a fixed slider is slidably installed inside the No. 1 slide groove; the bottom surface of the fixed slider can slide with the top surface of the inner ring of the fan blade shell; a No. 2 electric push rod is fixedly connected between the fixed slider and the No. 1 slide groove; the stability of the metal wire inside the placement groove is further improved, and the shaking of the metal wire during welding is reduced.

[0014] Preferably, a mounting groove is provided on the inner circle of the bottom surface of the placement groove; the mounting groove is sleeved on the outer circle of the column; a ring plate is slidably installed inside the mounting groove; a plurality of springs are fixedly connected between the bottom surface of the ring plate and the bottom surface of the mounting groove; a plurality of guide rods are fixedly connected to the bottom surface of the ring plate; a sliding hole is provided on the bottom surface of the mounting groove; the guide rod slidably cooperates with the sliding hole on the bottom surface of the mounting groove; the spring is sleeved on the outer circle of the guide rod; this makes it easy for the staff to take out the welded metal wire, thereby improving the convenience of the staff.

[0015] Preferably, the outer ring of the placement groove is provided with a pushing unit; the pushing unit includes an annular groove; the outer ring of the placement groove is provided with an annular groove; the inner ring of the annular groove is connected to the positioning groove; a top ring is slidably installed at the bottom of the annular groove; a plurality of metal rings are stacked inside the annular groove, and the inner ring of the metal ring is in contact with the radial metal wire outer ring of the fan blade shell; a plurality of connecting rods are fixedly connected to the bottom surface of the top ring; the bottom end of the connecting rod slides through the bottom of the annular groove; a plurality of the bottom ends of the connecting rods are fixedly connected to a connecting ring; a plurality of No. 3 electric push rods are evenly fixedly connected to the outer ring of the fixed disk seat; the bottom end of the No. 3 electric push rod is fixedly connected to the connecting ring; thereby reducing the situation of frequent material loading by the staff and improving the work efficiency of the staff.

[0016] Preferably, a plurality of No. 2 slide grooves are evenly provided on the outer ring of the top surface of the fixed disk seat; the No. 2 slide grooves are connected to the annular grooves; a separation slider is slidably installed inside the No. 2 slide groove; an inclined surface is provided on the top of one end of the separation slider close to the annular groove; a No. 4 electric push rod is fixedly connected around the outer ring of the top surface of the fixed disk seat; the No. 4 electric push rod corresponds to the No. 2 slide groove; the piston rod of the No. 4 electric push rod is fixedly connected to the separation slider; thereby avoiding the situation where welding between multiple metal rings and metal wires occurs, and improving the accuracy and quality of welding.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The fan casing parallel seam welding fixture described in the present invention comprises a fixed disc seat, a placement groove, a column and a positioning groove; the radial metal wire of the fan blade casing is placed in the placement groove on the top of the fixed disc seat, so that the inner ring of the fan blade casing is sleeved on the outer ring of the column, and the metal wires are respectively stuck in the positioning grooves to limit the position of each metal wire, and then the metal ring is placed on the outer ring of the metal wire so that the metal ring contacts each metal wire; the fixed disc seat is rotated, and the welding equipment welds the contact part between the metal ring and the metal wire at the same time; thereby controlling the spacing between the metal wires, facilitating the operation of the staff, improving the work efficiency, and improving the quality of the fan.

[0019] 2. The fan casing parallel seam welding fixture described in the present invention comprises a rotating groove, a pressure rod, a circular groove, a No. 1 electric push rod, a top plate, a connecting hole, and a pull rope; when the metal wire is not placed, the No. 1 electric push rod is in a retracted state, and the top plate is located inside the circular groove, so that the pull rope is in a relaxed state, and the pressure rod is pushed by the torsion spring and retracted in a vertical state inside the rotating groove, thereby avoiding the influence on the placement of the metal wire; when the metal wire is placed inside the placement groove, the No. 1 electric push rod pushes the top plate to rise in height, driving the pull rope to slide along the connecting hole into the circular groove, and the pull rope pulls the pressure rod to rotate, so that the pressure rod presses the metal wire tightly in the positioning groove, thereby avoiding the situation where the metal wire moves out of the positioning groove due to deformation, thereby avoiding the situation where welding leaks between the metal wire and the metal ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 is an exploded view of the present invention;

[0023] Figure 3 is a three-dimensional diagram of a fixed disc seat in the present invention;

[0024] Figure 4 is a three-dimensional diagram of a column in the present invention;

[0025] Figure 5 is a three-dimensional diagram of the pressing unit in the present invention;

[0026] Figure 6 yes Figure 5 A partial enlarged view of the middle part;

[0027] Figure 7 is a three-dimensional diagram of a U-shaped splint in the present invention;

[0028] Figure 8 is a stereogram of a fixed slider and a ring plate in the present invention;

[0029] Fig. 9 is a three-dimensional diagram of the pushing unit in the present invention;

[0030] Fig.10 is a cross-sectional view of the present invention;

[0031] Fig.11 yes Fig.10 A partial enlarged view of point B in the middle;

[0032] Fig.12 yes Fig.10 A partial enlarged view of point C in the middle;

[0033] In the figure: 1. base; 2. fixed disc seat; 3. placement groove; 4. column; 5. positioning groove; 6. gear ring; 7. motor; 8. gear; 9. rotating groove; 10. pressure rod; 11. circular groove; 12. No. 1 electric push rod; 13. top plate; 14. connecting hole; 15. pull rope; 16. elastic clip; 17. U-shaped clamp; 18. inner groove; 19. No. 1 slide groove; 20. fixed slider; 21. No. 2 electric push rod; 22. installation groove; 23. ring plate; 24. spring; 25. guide rod; 26. ring groove; 27. top ring; 28. connecting rod; 29. ​​connecting ring; 30. No. 3 electric push rod; 31. No. 2 slide groove; 32. separation slider; 33. No. 4 electric push rod. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] like Figures 1 to 3 As shown, a parallel seam welding fixture for a fan casing according to an embodiment of the present invention comprises a base 1; the base 1 is bolted to a welding device; a fixed disc seat 2 is rotatably mounted on the top of the base 1; a placement groove 3 is provided on the top surface of the fixed disc seat 2; the shape of the placement groove 3 matches the shape of the outer casing of the fan blade; a column 4 is fixedly connected to the middle of the placement groove 3; the column 4 matches the inner ring of the outer casing of the fan blade; a plurality of positioning grooves 5 are provided around the bottom surface of the placement groove 3; the positioning grooves 5 are radially arranged; the positioning grooves 5 are radially aligned with the metal outer casing of the fan blade. When working, the radial metal wire of the fan blade shell is placed in the placement groove 3 on the top of the fixed disk seat 2, so that the inner ring of the fan blade shell is sleeved on the outer ring of the column 4, and the metal wires are respectively stuck in the positioning groove 5, which limits the position of each metal wire, and then the metal ring is placed on the outer ring of the metal wire so that the metal ring contacts each metal wire; the fixed disk seat 2 is rotated, and the welding equipment welds the contact part between the metal ring and the metal wire at the same time; thereby controlling the spacing between the metal wires, facilitating the operation of the staff, improving the work efficiency, and improving the quality of the fan.

[0036] like Figure 2 and Fig.10 As shown, the bottom outer ring of the fixed disk seat 2 is fixedly connected with a gear ring 6; the outer wall of the base 1 is fixedly connected with a motor 7; the outer ring of the rotating shaft of the motor 7 is fixedly connected with a gear 8; the gear 8 is meshed with the gear ring 6; when working, the motor 7 drives the gear 8 to rotate, drives the gear ring 6 meshed with it to rotate, drives the fixed disk seat 2 to rotate, controls the rotation angle of the metal ring and the metal wire, thereby facilitating the accurate welding of the welding equipment and improving the quality of welding.

[0037] like Figures 1 to 12As shown, a clamping unit is provided at the top of the column 4; the clamping unit includes a rotating groove 9; a plurality of the rotating grooves 9 are opened on the top outer ring of the column 4; the rotating grooves 9 correspond to the positioning grooves 5; a pressure rod 10 is rotatably installed inside the rotating groove 9; the end of the pressure rod 10 away from the column 4 can be rotatably slid into the positioning groove 5; a torsion spring is provided on the outer ring of the rotating shaft of the pressure rod 10; a driving assembly is provided in the middle of the column 4, and the driving assembly drives the pressure rod 10 to rotate; the driving assembly includes a circular groove 11; the circular groove 11 is opened at the top of the column 4; a No. 1 electric push rod 12 is fixedly connected to the bottom end of the circular groove 11; a top plate 13 is fixedly connected to the top of the No. 1 electric push rod 12; a connecting hole 14 is opened between the circular groove 11 and the rotating groove 9; a plurality of pull ropes 15 are fixedly connected around the outer ring of the bottom surface of the top plate 13; the pull rope 15 slides through the connecting hole 14; the bottom end of the pull rope 15 is fixedly connected to the side of the bottom of the pressure rod 10 away from the circular groove 11; during operation, when the metal wire is not placed, the No. 1 electric push rod 12 is in a retracted state, and the top plate 13 is located inside the circular groove 11, so that the pull rope 15 is in a relaxed state, and the pressure rod 10 is pushed by the torsion spring, and the pressure rod 10 is vertically retracted inside the rotating groove 9, thereby avoiding the influence on the placement of the metal wire; when the metal wire is placed inside the placement groove 3, the No. 1 electric push rod 12 pushes the top plate 13 to rise in height, driving the pull rope 15 to slide along the connecting hole 14 into the circular groove 11, and the pull rope 15 pulls the pressure rod 10 to rotate, so that the pressure rod 10 presses the metal wire tightly into the positioning groove 5, avoiding the situation where the metal wire moves out of the positioning groove 5 due to deformation, thereby avoiding the situation where welding leaks occur between the metal wire and the metal ring.

[0038] like Figure 6 , Fig.11 and Fig.12 As shown, a plurality of pairs of arc-shaped elastic clips 16 are evenly fixed to one side of the pressure rod 10 close to the positioning groove 5; each pair of the elastic clips 16 matches the radial metal wire of the fan blade housing; during operation, when the pressure rod 10 rotates to press down the metal wire, the symmetrically arranged elastic clips 16 on the pressure rod 10 will clamp the raised metal wire, avoiding the separation of the metal wire from the pressure rod 10, thereby improving the accuracy of fixing the metal wire to the inside of the positioning groove 5.

[0039] like Figure 6 and Figure 7 As shown, a U-shaped clamp 17 is fixed to the top of the rotating groove 9; inner grooves 18 are opened on both sides of the U-shaped clamp 17; when working, when the pressure rod 10 is vertically retracted inside the rotating groove 9, the pressure rod 10 is stuck to the middle part of the U-shaped clamp 17, so that the inner circle of the U-shaped clamp 17 bends into the inner grooves 18 on both sides, thereby fixing the pressure rod 10, limiting the position of the pressure rod 10 after retraction, and reducing the probability of accidental rotation and expansion of the pressure rod 10.

[0040] like Figure 8 , Fig.10 and Fig.11 As shown, a No. 1 slide groove 19 is provided on both sides of the column 4; a fixed slider 20 is slidably installed inside the No. 1 slide groove 19; the bottom surface of the fixed slider 20 can slide with the top surface of the inner ring of the fan blade shell; a No. 2 electric push rod 21 is fixedly connected between the fixed slider 20 and the No. 1 slide groove 19; during operation, after the pressure rod 10 presses the metal wire inside the positioning groove 5, the No. 2 electric push rod 21 pushes the fixed slider 20 to slide from the inside of the No. 1 slide groove 19, fixing and pressing the inner ring of the metal wire, thereby further improving the stability of the metal wire inside the placement groove 3 and reducing the shaking of the metal wire during welding.

[0041] like Figure 8 , Fig.10 and Fig.11 As shown, the inner circle of the bottom surface of the placement groove 3 is provided with a mounting groove 22; the mounting groove 22 is sleeved on the outer circle of the column 4; a ring plate 23 is slidably installed inside the mounting groove 22; a plurality of springs 24 are fixedly connected between the bottom surface of the ring plate 23 and the bottom surface of the mounting groove 22; a plurality of guide rods 25 are fixedly connected to the bottom surface of the ring plate 23; a sliding hole is provided on the bottom surface of the mounting groove 22; the guide rod 25 slides with the sliding hole on the bottom surface of the mounting groove 22; the spring 24 is sleeved on the outer circle of the guide rod 25; during operation, after the metal wire is fixed to the inside of the placement groove 3, the ring plate 23 is pressed into the inside of the mounting groove 22, so that the spring 24 is compressed; when welding is completed, the fixed slider 20 is retracted into the inside of the No. 1 slide groove 19, and after the pressure rod 10 is vertically contracted inside the rotating groove 9, the spring 24 is reset, pushing the ring plate 23 to slide upward, pushing the metal wire to move upward, thereby facilitating the staff to take out the welded metal wire, thereby improving the convenience of the staff.

[0042] like Figure 1 , Figure 2 , Figure 3 , Fig. 9 , Fig.10 and Fig.12As shown, the outer ring of the placement groove 3 is provided with a pushing unit; the pushing unit includes an annular groove 26; the outer ring of the placement groove 3 is provided with an annular groove 26; the inner ring of the annular groove 26 is connected with the positioning groove 5; a top ring 27 is slidably installed at the bottom of the annular groove 26; a plurality of metal rings are stacked inside the annular groove 26, and the inner ring of the metal ring is in contact with the radial metal wire outer ring of the fan blade shell; a plurality of connecting rods 28 are fixedly connected to the bottom surface of the top ring 27; the bottom end of the connecting rod 28 slides through the bottom of the annular groove 26; a plurality of connecting rods 28 are fixedly connected to the bottom ends of the connecting rings 29; the outer ring of the fixed disk seat 2 There are multiple No. 3 electric push rods 30 evenly fixedly connected; the bottom end of the No. 3 electric push rod 30 is fixedly connected to the connecting ring 29; when working, the No. 3 electric push rod 30 pushes the connecting ring 29 to move downward, drives the connecting rod 28 to slide downward, and drives the top ring 27 to slide to the bottom of the ring groove 26; multiple metal rings are placed inside the ring groove 26; when welding, the No. 3 electric push rod 30 drives the connecting ring 29, the connecting rod 28 and the top ring 27 to slide upward, and pushes the metal ring to move upward along the ring groove 26, so that a metal ring on the top contacts the metal wire, thereby reducing the situation of frequent material loading by the staff and improving the work efficiency of the staff.

[0043] like Figure 1 , Figure 2 , Figure 3 , Fig. 9 , Fig.10 and Fig.12 As shown, the top outer ring of the fixed disk seat 2 is evenly provided with a plurality of No. 2 slide grooves 31; the No. 2 slide grooves 31 are connected to the annular grooves 26; a separation slider 32 is slidably installed inside the No. 2 slide grooves 31; an inclined surface is provided on the top of the separation slider 32 at one end close to the annular groove 26; a No. 4 electric push rod 33 is fixedly connected around the top outer ring of the fixed disk seat 2; the No. 4 electric push rod 33 corresponds to the No. 2 slide grooves 31; the piston rod of the No. 4 electric push rod 33 is fixedly connected to the separation slider 32; during operation, when the top ring 27 pushes a metal ring at the top to the No. 2 slide grooves 31, the No. 4 electric push rod 33 pushes the separation slider 32 to slide along the No. 2 slide grooves 31 into the annular groove 26, lifting up a metal ring at the top, separating the metal ring at the top from the metal ring below, and making only one metal ring contact with the metal wire, thereby avoiding the situation where welding occurs between multiple metal rings and the metal wire, and improving the accuracy and quality of welding.

[0044] Working principle: The No. 3 electric push rod 30 pushes the connecting ring 29 to move downward, drives the connecting rod 28 to slide downward, and drives the top ring 27 to slide to the bottom of the ring groove 26; multiple metal rings are placed inside the ring groove 26; the No. 1 electric push rod 12 is in a retracted state, and the top plate 13 is located inside the circular groove 11, so that the pull rope 15 is in a relaxed state. Under the push of the torsion spring, the pressure rod 10 is vertically retracted inside the rotating groove 9, avoiding the influence on the placement of the metal wire;

[0045] Place the radial metal wire of the fan blade shell into the placement groove 3 on the top of the fixed disc seat 2, so that the inner ring of the fan blade shell is sleeved on the outer ring of the column 4, and the No. 1 electric push rod 12 pushes the top plate 13 to rise, driving the pull rope 15 to slide along the connecting hole 14 into the circular groove 11, and the pull rope 15 pulls the pressure rod 10 to rotate, and the symmetrically arranged elastic clips 16 on the pressure rod 10 will clamp the raised metal wire to avoid the separation of the metal wire and the pressure rod 10, and the pressure rod 10 presses the metal wire tightly into the positioning groove 5; press the ring plate 23 into the inside of the installation groove 22 to compress the spring 24; the No. 2 electric push rod 21 pushes the fixed slider 20 to slide from the inside of the No. 1 slide groove 19 to fix and press the inner ring of the metal wire;

[0046] The third electric push rod 30 drives the connecting ring 29, the connecting rod 28 and the top ring 27 to slide upward, pushing the metal ring to move upward along the ring groove 26; when the top ring 27 pushes the top metal ring to the second slide groove 31, the fourth electric push rod 33 pushes the separation slider 32 to slide along the second slide groove 31 into the ring groove 26, pushing up the top metal ring, so that the top metal ring is separated from the metal ring below, and only one metal ring is in contact with the metal wire;

[0047] The motor 7 drives the gear 8 to rotate, drives the gear ring 6 meshing therewith to rotate, drives the fixed disc seat 2 to rotate, controls the rotation angle of the metal ring and the metal wire, and at the same time the welding equipment welds the contact part between the metal ring and the metal wire; thereby controlling the spacing between the metal wires, facilitating the operation of the staff, improving the work efficiency, and improving the quality of the fan.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A parallel seam welding fixture for a fan housing, characterized in that: The invention comprises a base (1); the base (1) is bolted to a welding device; a fixed disc seat (2) is rotatably mounted on the top of the base (1); a placement groove (3) is provided on the top surface of the fixed disc seat (2); the shape of the placement groove (3) matches the shape of the outer shell of the fan blade; a column (4) is fixedly connected to the middle of the placement groove (3); the column (4) matches the inner ring of the outer shell of the fan blade; a plurality of positioning grooves (5) are provided around the bottom surface of the placement groove (3); the positioning grooves (5) are radially arranged; and the positioning grooves (5) match the radial metal wires of the outer shell of the fan blade; A clamping unit is provided at the top of the column (4); the clamping unit comprises a rotation groove (9); a plurality of the rotation grooves (9) are provided at the outer ring of the top of the column (4); the rotation groove (9) corresponds to the positioning groove (5); a pressure rod (10) is rotatably installed inside the rotation groove (9); the end of the pressure rod (10) away from the column (4) can be rotatably slid into the positioning groove (5); a torsion spring is provided at the outer ring of the rotating shaft of the pressure rod (10); a driving assembly is provided in the middle of the column (4), and the driving assembly drives the pressure rod (10) to rotate; The driving assembly comprises a circular groove (11); the circular groove (11) is provided at the top of the column (4); a No. 1 electric push rod (12) is fixedly connected to the bottom end of the circular groove (11); a top plate (13) is fixedly connected to the top end of the No. 1 electric push rod (12); a connecting hole (14) is provided between the circular groove (11) and the rotating groove (9); a plurality of pull ropes (15) are fixedly connected around the outer ring of the bottom surface of the top plate (13); the pull ropes (15) slide through the connecting hole (14); and the bottom end of the pull rope (15) is fixedly connected to a side of the bottom of the pressure rod (10) away from the circular groove (11).

2. A fan housing parallel seam welding fixture according to claim 1, characterized in that: The outer ring of the bottom of the fixed disc seat (2) is fixedly connected to a gear ring (6); the outer wall of the base (1) is fixedly connected to a motor (7); the outer ring of the rotating shaft of the motor (7) is fixedly connected to a gear (8); and the gear (8) is meshed with the gear ring (6).

3. A fan housing parallel seam welding fixture according to claim 1, characterized in that: A plurality of pairs of arc-shaped elastic clips (16) are evenly fixedly connected to one side of the pressure rod (10) close to the positioning groove (5); each pair of the elastic clips (16) matches the radial metal wire of the fan blade housing.

4. A fan housing parallel seam welding fixture according to claim 1, characterized in that: A U-shaped clamping plate (17) is fixedly connected to the top of the rotating groove (9); inner grooves (18) are formed on both sides of the U-shaped clamping plate (17).

5. A fan housing parallel seam welding fixture according to claim 1, characterized in that: A No. 1 slide groove (19) is provided on both sides of the column (4); a fixed slider (20) is slidably installed inside the No. 1 slide groove (19); the bottom surface of the fixed slider (20) can be slidably matched with the top surface of the inner ring of the fan blade shell; a No. 2 electric push rod (21) is fixedly connected between the fixed slider (20) and the No. 1 slide groove (19).

6. A fan housing parallel seam welding fixture according to claim 1, characterized in that: The bottom surface inner ring of the placement groove (3) is provided with a mounting groove (22); the mounting groove (22) is sleeved on the outer ring of the column (4); a ring plate (23) is slidably mounted inside the mounting groove (22); a plurality of springs (24) are fixedly connected between the bottom surface of the ring plate (23) and the bottom surface of the mounting groove (22); a plurality of guide rods (25) are fixedly connected to the bottom surface of the ring plate (23); a sliding hole is provided on the bottom surface of the mounting groove (22); the guide rod (25) is slidably matched with the sliding hole on the bottom surface of the mounting groove (22); and the spring (24) is sleeved on the outer ring of the guide rod (25).

7. A fan housing parallel seam welding fixture according to claim 1, characterized in that: The outer ring of the placement groove (3) is provided with a pushing unit; the pushing unit includes an annular groove (26); the outer ring of the placement groove (3) is provided with an annular groove (26); the inner ring of the annular groove (26) is communicated with the positioning groove (5); a top ring (27) is slidably mounted on the bottom of the annular groove (26); a plurality of metal rings are stacked inside the annular groove (26), and the inner rings of the metal rings are in contact with the radial metal wire outer ring of the fan blade shell; a plurality of connecting rods (28) are fixedly connected to the bottom surface of the top ring (27); the bottom ends of the connecting rods (28) slide through the bottom of the annular groove (26); the bottom ends of the plurality of connecting rods (28) are fixedly connected to connecting rings (29); a plurality of No. 3 electric push rods (30) are evenly fixedly connected to the outer ring of the fixed disk seat (2); the bottom ends of the No. 3 electric push rods (30) are fixedly connected to the connecting ring (29).

8. A fan housing parallel seam welding fixture according to claim 7, characterized in that: The outer ring of the top surface of the fixed disc seat (2) is evenly provided with a plurality of No. 2 slide grooves (31); the No. 2 slide grooves (31) are connected to the annular groove (26); a separation slider (32) is slidably mounted inside the No. 2 slide groove (31); an inclined surface is provided on the top of one end of the separation slider (32) close to the annular groove (26); a No. 4 electric push rod (33) is fixedly connected around the outer ring of the top surface of the fixed disc seat (2); the No. 4 electric push rod (33) corresponds to the No. 2 slide groove (31); and the piston rod of the No. 4 electric push rod (33) is fixedly connected to the separation slider (32).

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