A welding device for manufacturing mechanical parts

Abstract

The present invention relates to the field of welding technology, specifically to a welding device for manufacturing mechanical parts, including a floor platform, a fastening assembly and a welding assembly, wherein a fastening assembly is fixedly provided on the top of the floor platform, and a welding assembly is fixedly provided on the top of the floor platform, the welding assembly is located at one end of the fastening assembly, a reduction motor is fixedly provided on the bottom of the floor platform, and a base is fixedly installed on the bottom of the floor platform. The four rocker arms are rotated along the transition position of the hinge shaft and the bearing seat, so that the top ends of the four rocker arms move toward the parts located at the top of the material plate until the top and bottom ends of the fastening claws respectively abut against the outer walls of the upper and lower parts, thereby synchronously fastening the upper and lower parts, and at the same time, the device can fasten the upper and lower parts of different specifications, thereby improving the flexibility of welding, and at the same time, a downward pressure is applied thereto to ensure that the welds of the upper and lower parts are tight, thereby improving the overall connection strength of the two parts after welding.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a welding device for manufacturing mechanical parts. Background Art

[0002] Welding process equipment is a general term for fixtures, mechanical devices or equipment that play a supporting and auxiliary role in the assembly and welding process of welded structure production, referred to as welding tooling. Among them, fixtures mainly include positioners, clamps, push-on devices, etc., and mechanical devices or equipment mainly include weldment positioners, welding machine positioners, welder positioners, etc. In modern welded structure production, actively promoting and using welding equipment that is compatible with product structure plays a very important role in improving product quality, reducing the labor intensity of welders, and accelerating the mechanization and automation process of welding production.

[0003] According to a Chinese patent application with the publication number CN118682379A, a welding device for mechanical manufacturing is disclosed, including a base and a vertical plate, wherein the upper end of the base is symmetrically fixedly connected with the vertical plate, an angle adjustment device is provided on the right side of the vertical plate on one side, and a locking device is provided on the left side of the vertical plate on the other side, and multiple groups of slide bars are fixedly connected to the upper end of the base, and the outer walls of the multiple groups of slide bars are slidably connected to the sleeve. The output shaft of the first motor rotates through the cooperation of the angle adjustment device, the stud and the clamping plate to drive the incomplete gear to rotate, so that the incomplete gear can drive the gear to rotate, and when the gear is rotated When rotating, it can drive the rotating rod to rotate synchronously, and the rotating rod can drive the frame to rotate synchronously, so that the angle of the workpiece can be adjusted. By replacing the number of teeth of the incomplete gear, the gear can rotate to different angles, so that the workpiece can adjust the angle, making welding more convenient. However, the above-mentioned welding device for mechanical manufacturing cannot automatically fix the two welded parts together, nor can it press the two welded parts together, which makes the weld seam after welding too large, thereby affecting the strength of the parts after welding. For this reason, we propose a welding device for mechanical parts manufacturing to solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention provides the following technical solution: A welding device for manufacturing mechanical parts, comprising a floor platform, a fastening assembly and a welding assembly, wherein the fastening assembly is fixedly provided on the top of the floor platform, and the welding assembly is fixedly provided on the top of the floor platform, the welding assembly is located at one end of the fastening assembly, and a reduction motor is fixedly provided on the bottom of the floor platform;

[0005] The fastening assembly includes a fastening base fixedly installed on the top of the floor platform, four side panels are fixedly installed on the top of the fastening base, two bearing seats are fixedly installed on the middle of the outer side surfaces of the four side panels, hinge shafts are rotatably installed inside the two bearing seats, rocker arms are fixedly installed on the outer walls of the hinge shafts, positioning pins are fixedly installed on the top of the rocker arms, two fastening claws are rotatably installed on the periphery of the positioning pins, hinge pins are fixedly installed on the tops of the fastening claws, pressure claws are rotatably installed on the outer walls of the hinge pins, an inner thread sleeve is fixedly installed on the end of the pressure claw, and a screw thread is screwed on the inner spiral of the inner thread sleeve Rod, a pressure head is fixedly installed at the bottom of the screw rod, an axial hole is opened through the middle of the top of the fastening base, a driving vertical shaft is rotatably installed inside the axial hole, a turntable is fixedly installed on the top of the driving vertical shaft, four arc grooves distributed at equal angles are opened on the top of the turntable, a slider is slidably installed inside the arc groove, a ball rod is fixedly installed on the top of the slider, the top of the ball rod is connected to a push rod through a universal connecting ball head, a U-shaped frame is fixedly installed on the end of the push rod away from the ball rod, a hinge pin is fixedly installed inside the U-shaped frame, a hinge hole is opened at the bottom end of the rocker arm, and the outer wall of the hinge pin is rotatably connected to the inside of the hinge hole.

[0006] As a preferred solution of the present invention, the reduction motor is fixedly installed on the bottom of the floor platform by bolts, and an axial through hole is opened through the top of the floor platform. The output shaft of the reduction motor movably passes through the axial through hole, and the output shaft of the reduction motor is fixedly connected to the bottom of the driving vertical shaft by a coupling.

[0007] As a preferred solution of the present invention, the outer side surfaces of the side panels are all penetrated with a clearance groove, the clearance groove is located between two bearing seats, and the width of the clearance groove is greater than the diameter of the push rod.

[0008] As a preferred solution of the present invention, the outer sleeve of the positioning pin is provided with a second torsion spring, which is fixedly installed between the rocker arm and the fastening claw, and the outer sleeve of the hinge pin is provided with a first torsion spring, which is fixedly installed between the fastening claw and the pressure claw.

[0009] As a preferred solution of the present invention, two guide wheels are rotatably mounted on the bottom end of the pressure claw via an axle pin, the pressure claw is located between the two guide wheels, and the diameter of the guide wheel is greater than the bottom width of the pressure claw.

[0010] As a preferred solution of the present invention, a torque handle is fixedly mounted on the top end of the screw.

[0011] As a preferred solution of the present invention, the four side panels are distributed in a square shape, and two reinforcing ribs distributed up and down are fixedly installed between two adjacent side panels.

[0012] As a preferred solution of the present invention, a material plate is fixedly mounted on the top of the four side panels.

[0013] As a preferred solution of the present invention, the welding assembly includes two guide rail frames fixedly installed on the top of the floor platform, the two guide rail frames are arranged parallel to each other, and a transfer platform is installed on the top of the two guide rail frames through electric guide rail sliding, and a welding arm is fixedly installed on the top of the transfer platform.

[0014] As a preferred solution of the present invention, a base is fixedly installed at the bottom of the floor platform.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the four rocker arms are rotated along the transition position of the hinge shaft and the bearing seat, so that the top ends of the four rocker arms move toward the part located at the top of the material plate, and further drive the fastening claws and the pressing claws to move together, until the top and bottom ends of the fastening claws are respectively in contact with the outer walls of the upper and lower parts, thereby fastening the upper and lower parts synchronously. In addition, since the fastening claws are rotatably installed between the locating pins and the rocker arms, the angle between the fastening claws and the rocker arms can be automatically adjusted according to the sizes of the upper and lower parts during the fastening process, so that the device can fasten the upper and lower parts of different specifications, thereby improving the flexibility of welding.

[0017] 2. In the present invention, while the claws are retracted toward the middle, the guide wheel first abuts against the outer wall of the upper part, and as the top of the fastening claws gradually approaches the outer wall of the part, the guide wheel is squeezed, causing the pressure claw to rotate along the connection between the hinge pin and the fastening claws, and the rotation of the pressure claw causes the inner thread sleeve to move downward, and the downward movement of the inner thread sleeve further drives the screw rod and the pressure head to move downward. When the top of the fastening claws abuts against the outer wall of the part, the top of the pressure head just abuts against the top of the part, so that the two top parts are simultaneously subjected to a downward pressure during the fastening period, ensuring that the welds of the upper and lower parts are tight and improving the overall connection strength of the two parts after welding.

[0018] 3. In the present invention, by applying force to the torque grip, the screw is further rotated so that the screw rotates upward or downward along the inner thread sleeve, thereby driving the pressure head to move together, so as to press down parts of different heights, so that the overall adaptation range of the device can be improved and the use is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a bottom perspective structural schematic diagram of the fastening assembly in the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the fastening assembly in the present invention from a top perspective;

[0022] Figure 4 It is a schematic diagram of the structure of the side panel in the present invention;

[0023] Figure 5 It is a detailed structural diagram of the fastening assembly in the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the rocker arm and the fastening claw in the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the pressure claw in the present invention;

[0026] Figure 8 It is a structural schematic diagram of the turntable in the present invention;

[0027] Fig. 9 It is a schematic diagram of the planar structure of the present invention.

[0028] In the figure: 100, floor platform; 200, fastening assembly; 201, fastening base; 2001, shaft hole; 202, side panel; 2002, clearance groove; 203, bearing seat; 204, hinge shaft; 205, rocker arm; 206, positioning pin; 207, fastening claw; 208, hinge pin; 209, pressure claw; 2010, inner thread sleeve; 2011, screw rod; 2012, pressure head; 2013, torque grip; 2014, guide wheel; 2015, first torsion spring; 2016, second torsion spring; 2017, driving vertical axis; 2018, turntable; 2019, arc groove; 2020, slider; 2021, ball bar; 2022, push rod; 2023, U-shaped frame; 2024, hinge pin; 2025, reaming; 300, welding assembly; 301, guide frame; 302, transfer platform; 303, welding arm; 400, material plate; 500, reduction motor; 600, reinforcing ribs. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-Figure 9 The technical solution provided by the present invention specifically includes the following embodiments:

[0031] Embodiment 1: A welding device for manufacturing mechanical parts, comprising a floor platform 100, a fastening assembly 200 and a welding assembly 300, wherein the fastening assembly 200 is fixedly arranged on the top of the floor platform 100, and the welding assembly 300 is fixedly arranged on the top of the floor platform 100, and the welding assembly 300 is located at one end of the fastening assembly 200, and a reduction motor 500 is fixedly arranged on the bottom of the floor platform 100, and a base is fixedly installed on the bottom of the floor platform 100;

[0032] The fastening assembly 200 includes a fastening base 201 fixedly mounted on the top of the floor platform 100, four side panels 202 are fixedly mounted on the top of the fastening base 201, two bearing seats 203 are fixedly mounted on the middle of the outer side surfaces of the four side panels 202, hinge shafts 204 are rotatably mounted inside the two bearing seats 203, rocker arms 205 are fixedly mounted on the outer walls of the hinge shafts 204, a positioning pin 206 is fixedly mounted on the top of the rocker arm 205, two fastening claws 207 are rotatably mounted on the periphery of the positioning pin 206, an axial hole 2001 is opened through the middle of the top of the fastening base 201, a driving vertical shaft 2017 is rotatably mounted inside the axial hole 2001, and a turntable 201 is fixedly mounted on the top of the driving vertical shaft 2017 8. The top of the turntable 2018 is provided with four arc grooves 2019 distributed at equal angles, a slider 2020 is slidably installed inside the arc groove 2019, a ball bar 2021 is fixedly installed on the top of the slider 2020, the top of the ball bar 2021 is connected to a push rod 2022 through a universal connection ball head, a U-shaped frame 2023 is fixedly installed on the end of the push rod 2022 away from the ball bar 2021, a hinge pin 2024 is fixedly installed inside the U-shaped frame 2023, a reaming hole 2025 is provided at the bottom end of the rocker arm 205, the outer wall of the hinge pin 2024 is rotatably connected to the inside of the reaming hole 2025, a second torsion spring 2016 is sleeved on the periphery of the positioning pin 206, and the second torsion spring 2016 is fixedly installed between the rocker arm 205 and the fastening claw 207;

[0033] The four side panels 202 are arranged in a square shape, and two reinforcing ribs 600 arranged vertically are fixedly installed between two adjacent side panels 202, and a material plate 400 is fixedly installed on the top of the four side panels 202;

[0034] The reduction motor 500 is fixedly installed at the bottom of the floor platform 100 by bolts. A shaft through hole is opened through the top of the floor platform 100. The output shaft of the reduction motor 500 movably passes through the shaft through hole. The output shaft of the reduction motor 500 is fixedly connected to the bottom of the driving vertical shaft 2017 by a coupling.

[0035] Specifically, in this embodiment, one of the two parts to be welded is placed on the top of the material plate 400, and then the other assembly part is placed on the top of the part, and the reduction motor 500 is started. The output shaft of the reduction motor 500 drives the driving vertical shaft 2017 and the turntable 2018 to rotate. The rotation of the turntable 2018 causes the four arc grooves 2019 to move together, and the four sliders 2020 are pushed toward the periphery along the four arc grooves 2019. The four sliders 2020 move toward the periphery through the connection with the four ball rods 21, and the four The top rod 2022, the U-shaped frame 2023 and the hinge pin 2024 are pushed outward. Due to the connection between the hinge pin 2024 and the reaming hole 2025, the four rocker arms 205 are further rotated along the transfer position of the hinge shaft 204 and the bearing seat 203, so that the top ends of the four rocker arms 205 move toward the part located at the top of the material plate 400, and further drive the fastening claws 207 and the pressing claws 209 to move together until the top and bottom ends of the fastening claws 207 are respectively in contact with the outer walls of the upper and lower parts, thereby synchronously fastening the upper and lower parts, and by The fastening claw 207 is rotatably installed between the positioning pin 206 and the rocker arm 205, so the angle between the fastening claw 207 and the rocker arm 205 can be automatically adjusted during the fastening process according to the size of the upper and lower parts, so that the device can fasten the upper and lower parts of different specifications, thereby improving the flexibility of welding, and when the angle between the fastening claw 207 and the rocker arm 205 rotates, the second torsion spring 2016 will be compressed to generate a rebound force, thereby providing the fastening claw 207 with a reset potential energy, so that after the welding is completed, the reduction motor can be used to The output shaft of 500 drives the vertical shaft 2017 and the turntable 2018 to rotate in the opposite direction, so that the four top rods 2022 move toward the middle, causing the tops of the four rocker arms 205 to open outward, and the rebound force of the second torsion spring 2016 in the energy storage state is released, driving the fastening claw 207 to rotate and reset along the transition position between the locating pin 206 and the rocker arm 205 for subsequent use. At the same time, due to the intervention of the second torsion spring 2016, unnecessary rotation between the fastening claw 207 and the rocker arm 205 can be avoided, thereby ensuring the initial stability of the fastening claw 207.

[0036] Furthermore, the outer side surfaces of the side panels 202 are all penetrated with a clearance groove 2002, the clearance groove 2002 is located between the two bearing seats 203, and the width of the clearance groove 2002 is greater than the diameter of the top rod 2022;

[0037] The clearance groove 2002 is provided to give way to the push rod 2022, and since the width of the clearance groove 2002 is greater than the diameter of the push rod 2022, the push rod 2022 will not rub or interfere with the inner wall of the clearance groove 2002 during movement, thereby ensuring smooth movement of the push rod 2022.

[0038] Embodiment 2: A hinge pin 208 is fixedly mounted on the top of the fastening claw 207, a pressure claw 209 is rotatably mounted on the outer wall of the hinge pin 208, an inner thread sleeve 2010 is fixedly mounted on the end of the pressure claw 209, a screw rod 2011 is screwed to the inner spiral of the inner thread sleeve 2010, a pressure head 2012 is fixedly mounted on the bottom of the screw rod 2011, a first torsion spring 2015 is provided on the outer sleeve of the hinge pin 208, the first torsion spring 2015 is fixedly mounted between the fastening claw 207 and the pressure claw 209, and a torque grip 2013 is fixedly mounted on the top of the screw rod 2011;

[0039] The bottom end of the pressing claw 209 is rotatably mounted with two guide wheels 2014 through an axle pin, the pressing claw 209 is located between the two guide wheels 2014, and the diameter of the guide wheel 2014 is larger than the bottom width of the pressing claw 209;

[0040] Specifically, in this embodiment, the push wheel 2014 first abuts against the outer wall of the upper part, and as the top of the fastening claw 207 gradually approaches the outer wall of the part, the push wheel 2014 is squeezed, causing the pressure claw 209 to rotate along the connection between the hinge pin 208 and the fastening claw 207, and the first torsion spring 2015 is compressed and stored, generating a rotational energy storage effect on the pressure claw 209, and the rotation of the pressure claw 209 causes the inner thread sleeve 2010 to move downward, and the downward movement of the inner thread sleeve 2010 further drives the screw 2011 together with the pressure head 2012 to move downward, when the top of the fastening claw 207 abuts against the outer wall of the part At the same time, in the present device, force can be applied to the torque handle 2013 to further rotate the screw 2011, so that the screw 2011 can be rotated upward or downward along the inner thread sleeve 2010, thereby driving the pressure head 2012 to move together, so as to press down on parts of different heights, thereby improving the overall adaptability of the present device and making it more flexible to use.

[0041] Embodiment 3: The welding assembly 300 includes two guide rail frames 301 fixedly mounted on the top of the floor platform 100, the two guide rail frames 301 are arranged parallel to each other, and a transfer platform 302 is installed on the top of the two guide rail frames 301 through electric guide rail sliding, and a welding arm 303 is fixedly installed on the top of the transfer platform 302;

[0042] Specifically, the present embodiment supports and fixes the transfer platform 302 by setting a guide rail frame 301, and the two parallel guide rail frames 301 can support the two sides of the transfer platform 302, and the two parallel guide rail frames 301 will not interfere with the movement of the transfer platform 302. The electric guide rail drives the transfer platform 302 to move along the top of the two guide rail frames 301, thereby driving the welding arm 303 to move together, thereby expanding the welding range of the welding arm 303.

[0043] In the present scheme, a welding device for manufacturing mechanical parts is used. First, one of the two parts to be welded is placed on the top of the material plate 400, and then the other assembly is placed on the top of the part. The reduction motor 500 is started, and the output shaft of the reduction motor 500 drives the driving vertical shaft 2017 and the turntable 2018 to rotate. The rotation of the turntable 2018 causes the four arc grooves 2019 to move together, and the four sliders 2020 are pushed toward the periphery along the four arc grooves 2019. The four sliders 2020 move toward the periphery through the four ball rods 202 1, further pushes the four push rods 2022, the U-shaped frame 2023 and the hinge pin 2024 to the periphery. Due to the connection between the hinge pin 2024 and the reaming hole 2025, the four rocker arms 205 are further rotated along the transfer position of the hinge shaft 204 and the bearing seat 203, so that the top ends of the four rocker arms 205 move toward the part located at the top of the material plate 400, and further drive the fastening claws 207 and the pressing claws 209 to move together, until the top and bottom ends of the fastening claws 207 respectively abut against the outer walls of the upper and lower parts, thereby tightening the upper and lower parts. Synchronous tightening, and because the fastening claw 207 is rotatably installed between the positioning pin 206 and the rocker arm 205, the angle between the fastening claw 207 and the rocker arm 205 can be automatically adjusted during the tightening process according to the size of the upper and lower parts, so that the device can tighten the upper and lower parts of different specifications, thereby improving the flexibility of welding, and when the angle between the fastening claw 207 and the rocker arm 205 rotates, the second torsion spring 2016 will be compressed to generate a rebound force, thereby providing the fastening claw 207 with a reset potential energy, so that after the welding is completed, The output shaft of the reduction motor 500 drives the vertical shaft 2017 and the rotating disk 2018 to rotate in the opposite direction, so that the four top rods 2022 move toward the middle, causing the tops of the four rocker arms 205 to open outward, and the rebound force of the second torsion spring 2016 in the energy storage state is released, driving the fastening claw 207 to rotate and reset along the transfer position of the positioning pin 206 and the rocker arm 205 for subsequent use. At the same time, due to the intervention of the second torsion spring 2016, unnecessary rotation between the fastening claw 207 and the rocker arm 205 can be avoided, thereby ensuring the initial stability of the fastening claw 207;

[0044] When the parts are being tightened, the tightening claw 207 is retracted toward the middle, and the push wheel 2014 first contacts the outer wall of the upper part. As the top of the tightening claw 207 gradually approaches the outer wall of the part, the push wheel 2014 is squeezed, causing the pressure claw 209 to rotate along the connection between the hinge pin 208 and the tightening claw 207. The first torsion spring 2015 is compressed and stored, generating a rotational energy storage effect on the pressure claw 209. The rotation of the pressure claw 209 causes the inner thread sleeve 2010 to move downward, and the downward movement of the inner thread sleeve 2010 further drives the screw 2011 and the pressure head 2012 to move downward. When the top of the tightening claw 207 contacts the outer wall of the part, the pressure head 2012 The top of the device just abuts against the top of the part, so that the two top parts exert a downward pressure on them during the tightening period, ensuring that the welds of the upper and lower parts are tight and improving the overall connection strength of the two parts after welding. At the same time, in this device, force can be applied to the torque grip 2013 to further rotate the screw 2011, so that the screw 2011 rotates upward or downward along the inner thread sleeve 2010, thereby driving the pressure head 2012 to move together, so as to press down on parts of different heights, so that the overall adaptation range of the device can be improved and the use is more flexible. Finally, the welding arm 303 is driven to move by the transfer platform 302 to weld the two tightened parts.

[0045] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A welding device for manufacturing mechanical parts, comprising a floor platform (100), a fastening assembly (200) and a welding assembly (300), characterized in that: A fastening assembly (200) is fixedly provided on the top of the floor platform (100), and a welding assembly (300) is fixedly provided on the top of the floor platform (100), wherein the welding assembly (300) is located at one end of the fastening assembly (200), and a reduction motor (500) is fixedly provided on the bottom of the floor platform (100); The fastening assembly (200) comprises a fastening base (201) fixedly mounted on the top of the floor platform (100), four side panels (202) fixedly mounted on the top of the fastening base (201), two bearing seats (203) fixedly mounted on the middle of the outer side surfaces of the four side panels (202), hinge shafts (204) being mounted inside the two bearing seats (203) for common rotation, rocker arms (205) fixedly mounted on the outer walls of the hinge shafts (204), and the rocker arms (205) A positioning pin (206) is fixedly installed on the top of the positioning pin (206), two fastening claws (207) are rotatably installed on the periphery of the positioning pin (206), a hinge pin (208) is fixedly installed on the top of the fastening claws (207), a pressure claw (209) is rotatably installed on the outer wall of the hinge pin (208), an inner thread sleeve (2010) is fixedly installed on the end of the pressure claw (209), a screw rod (211) is screwed to the inner spiral of the inner thread sleeve (2010), and the bottom of the screw rod (211) is fixedly installed on the outer wall of the hinge pin (208). A pressure head (212) is fixedly installed, an axial hole (2001) is opened through the middle of the top of the fastening base (201), a driving vertical shaft (2017) is rotatably installed inside the axial hole (2001), a turntable (2018) is fixedly installed on the top of the driving vertical shaft (2017), four arc grooves (2019) distributed at equal angles are opened on the top of the turntable (2018), a slider (2020) is slidably installed inside the arc groove (2019), and the slider (2020) ) is fixedly mounted on the top of the rocker arm (205); the top of the rocker arm (205) is connected to a push rod (2022) via a universal connecting ball head; a U-shaped frame (2023) is fixedly mounted on one end of the push rod (2022) away from the rocker arm (205); a hinge pin (2024) is fixedly mounted inside the U-shaped frame (2023); a hinge hole (2025) is formed at the bottom end of the rocker arm (205); and an outer wall of the hinge pin (2024) is rotatably connected to the inside of the hinge hole (2025).

2. A welding device for manufacturing mechanical parts according to claim 1, characterized in that: The reduction motor (500) is fixedly mounted on the bottom of the floor platform (100) by means of bolts; a shaft through hole is provided through the top of the floor platform (100); an output shaft of the reduction motor (500) movably passes through the shaft through hole; and the output shaft of the reduction motor (500) is fixedly connected to the bottom of the driving vertical shaft (2017) by means of a coupling.

3. A welding device for manufacturing mechanical parts according to claim 2, characterized in that: The outer side surfaces of the side panels (202) are all provided with clearance grooves (2002), the clearance grooves (2002) are located between the two bearing seats (203), and the width of the clearance grooves (2002) is greater than the diameter of the top rod (2022).

4. A welding device for manufacturing mechanical parts according to claim 3, characterized in that: The outer sleeve of the positioning pin (206) is provided with a second torsion spring (2016), and the second torsion spring (2016) is fixedly installed between the rocker arm (205) and the fastening claw (207); the outer sleeve of the hinge pin (208) is provided with a first torsion spring (2015), and the first torsion spring (2015) is fixedly installed between the fastening claw (207) and the pressure claw (209).

5. A welding device for manufacturing mechanical parts according to claim 4, characterized in that: Two guide wheels (2014) are rotatably mounted on the bottom end of the pressing claw (209) via an axle pin, the pressing claw (209) is located between the two guide wheels (2014), and the diameter of the guide wheel (2014) is greater than the bottom width of the pressing claw (209).

6. A welding device for manufacturing mechanical parts according to claim 5, characterized in that: A torque handle (2013) is fixedly mounted on the top end of the screw rod (2011).

7. A welding device for manufacturing mechanical parts according to claim 6, characterized in that: The four side panels (202) are distributed in a U-shape, and two reinforcing ribs (600) distributed up and down are fixedly installed between two adjacent side panels (202).

8. A welding device for manufacturing mechanical parts according to claim 7, characterized in that: A material plate (400) is fixedly mounted on the top of the four side panels (202).

9. A welding device for manufacturing mechanical parts according to claim 8, characterized in that: The welding assembly (300) comprises two guide rail frames (301) fixedly mounted on the top of the floor platform (100), the two guide rail frames (301) being arranged parallel to each other, and a transfer platform (302) being slidably mounted on the top of the two guide rail frames (301) via electric guide rails, and a welding arm (303) being fixedly mounted on the top of the transfer platform (302).

10. A welding device for manufacturing mechanical parts according to claim 9, characterized in that: A base is fixedly mounted on the bottom of the floor platform (100).

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