Automatic screw welding device

Abstract

The present invention discloses an automatic screw welding device, which belongs to the field of welding devices, and includes a chassis, wherein a welding chamber is provided inside the chassis, and an auxiliary observation mechanism is provided on one inner wall of the welding chamber, a side of the chassis is movably connected to a door, and the inner side of the door is fixedly connected to a dust-proof feeding assembly; a substrate clamping assembly is fixedly connected to a position near the middle of the bottom end face of the welding chamber, and a welding robot is provided on one side of the substrate clamping assembly, a material-retrieving robot is provided on the other side of the substrate clamping assembly, and an impurity collecting mechanism is provided below the substrate clamping assembly, and the substrate clamping assembly specifically includes: two side plates relatively fixed to the bottom end face of the welding chamber, and a support frame is rotatably connected between the two side plates. The present invention can adjust the angle of the fixed substrate in the horizontal and vertical planes as needed, thereby facilitating multi-angle and more comprehensive welding of the welding point, thereby improving the welding effect.

Description

Technical Field

[0001] The invention relates to the field of welding devices, in particular to an automatic screw welding device. Background Art

[0002] With the rapid development of communications and IT industries, electronic products such as mobile phones and computers have become an indispensable part of daily life. Substrates are an important part of various electronic products, so the substrate manufacturing industry has developed rapidly. In order to facilitate the connection with other components of electronic products, screws are fixed to the substrate through welding technology during the substrate manufacturing process. This process is usually completed using a welding device.

[0003] When welding screws and substrates, existing welding devices usually need to fix the substrate first, but the fixed substrate cannot adjust the angle on the horizontal and vertical planes as needed, which is inconvenient to perform multi-angle and more comprehensive welding on the welding point, reducing the welding effect. Therefore, those skilled in the art provide an automatic screw welding device to solve the problems raised in the above background technology. Summary of the invention

[0004] The object of the present invention is to provide an automatic screw welding device, which can adjust the angle of the fixed substrate in the horizontal and vertical planes as needed, thereby facilitating more comprehensive welding at multiple angles on the welding point, improving the welding effect, and solving the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An automatic screw welding device comprises a chassis, a welding cavity is provided inside the chassis, an auxiliary observation mechanism is provided on an inner wall of one side of the welding cavity, a side of the chassis is movably connected to a box door, and an inner side of the box door is fixedly connected to a dust-proof feeding assembly;

[0007] A substrate clamping assembly is fixedly connected to the bottom end surface of the welding cavity near the middle, a welding robot is provided on one side of the substrate clamping assembly, a material picking robot is provided on the other side of the substrate clamping assembly, and an impurity collecting mechanism is provided below the substrate clamping assembly.

[0008] As a further scheme of the present invention: the substrate clamping assembly specifically includes: two side plates relatively fixed on the bottom end surface of the welding cavity, a support frame rotatably connected between the two side plates, and a circular groove is opened on one side of the support frame, an annular guard plate is fixedly connected to the other side of the support frame, and the outer side of the annular guard plate is fixedly connected to a concave guard plate, one side of the concave guard plate is fixedly connected to a stepper motor, and the output shaft of the stepper motor passes through the concave guard plate and is fixedly connected to a transmission gear, an annular support plate is provided inside the annular guard plate, and the outer side of the annular support plate is fixedly connected to a gear ring meshing with the transmission gear, one side of the annular support plate is fixedly connected to an annular end cover, and one side of the annular end cover is provided with four evenly distributed telescopic clamps, a limiting support is provided between the support frame and the annular support plate, and an annular electromagnet is embedded in the inner side of the annular support plate.

[0009] As a further solution of the present invention: the limiting support member specifically includes: an annular groove opened on the outer surface of the annular support plate, a plurality of ball bearings evenly distributed and matching the annular groove are arranged around the annular groove, and the inner ring of the ball bearing is fixedly connected to the inner side surface of the support frame, and the outer ring of the ball bearing is inserted into the annular groove and movably connected thereto.

[0010] As a further solution of the present invention: the telescopic clamp specifically includes: a clamping plate movably connected to one side of the annular end cover, a strip groove is opened in the middle position of one side of the clamping plate, and two parallel fastening bolts are movably connected inside the strip groove, and one end of the fastening bolt is screwed into the inside of the annular end cover.

[0011] As a further solution of the present invention: a rotating motor is fixedly connected to the inner side surface of one of the side plates, and the output shaft of the rotating motor passes through the corresponding side plate and is fixedly connected to the support frame, a mounting seat is fixedly connected to one side of the rotating motor, and a side surface of the mounting seat is threadedly connected to a limiting shaft, and an arc groove for the limiting shaft to pass through is opened on one side surface of the support frame at a position corresponding to the limiting shaft.

[0012] As a further scheme of the present invention: the dust-proof feeding assembly specifically includes: a circular table fixed on the inner side surface of the box door, a circular cavity is opened inside the circular table, and a driving motor is embedded in the center of the inner wall of one side of the circular cavity, the output shaft of the driving motor is fixedly connected with a linear guide rail, and one side of the linear guide rail is movably connected with the linear motor, the other side of the linear guide rail is fixedly connected with a limiting slider, an annular slide rail is fixedly connected to the inner wall of one side of the circular cavity, and one side of the annular slide rail is opened with an annular slide groove matching the limiting slider, the limiting slider is movably connected inside the annular slide groove, one side of the linear motor is fixedly connected with a telescopic motor, a plurality of circularly distributed slots are opened on one side of the circular table, and a through hole connected to the circular cavity is opened on the end wall of the slot hole, the output shaft of the telescopic motor can pass through the through hole, a rubber membrane is embedded in the opening position of the slot hole, and a cross opening is provided on the side of the rubber membrane.

[0013] As a further solution of the present invention: the auxiliary observation mechanism specifically includes: a strip support plate fixed on the inner wall of one side of the welding chamber, one side of the strip support plate is rotatably connected to a rotating plate, and one side of the rotating plate is embedded with an electric push rod, the output shaft of the electric push rod is fixedly connected to a push plate, and a fill light plate is embedded in the middle position of one side of the push plate, and the top of one side of the push plate is fixedly connected to a strip arc plate.

[0014] As a further solution of the present invention: the impurity collection mechanism specifically includes: a collecting groove opened on the bottom end surface of the welding cavity, the bottom end surface of the collecting groove is provided with an oblique lead-out groove, and the top end surface of the oblique lead-out groove is provided with a rotating groove near the lower side, a metal baffle is rotatably connected inside the rotating groove, and a bar electromagnet is embedded in the top end surface of the rotating groove.

[0015] As a further solution of the present invention: a switch door is movably connected to the other side of the chassis.

[0016] As a further solution of the present invention: a camera is fixedly connected to a position near the middle of the top surface of the welding cavity.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The substrate clamping assembly of the present application can adjust the angle of the fixed substrate in the horizontal and vertical planes as needed, thereby facilitating more comprehensive welding at multiple angles at the welding point and improving the welding effect.

[0019] 2. The substrate clamping assembly of the present application can fix the substrate in the hollow part, which not only reduces the interference of the fixing parts on the welding process, but also allows the residue and debris generated during the welding process to fall smoothly from the hollow part for collection, which is convenient for use.

[0020] 3. The dust-proof feeding assembly provided in the present application can place a large number of screws to be welded at one time and prevent dust in the air from contacting and contaminating the screws. At the same time, the screws are fed out sequentially after the welding work begins. The overall degree of automation is high and it is easy to use.

[0021] 4. The auxiliary observation mechanism set up in this application can provide fill light behind the substrate after welding is completed, assisting the staff to observe the welding effect more carefully, and retract the fill light board during welding to prevent it from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an automatic screw welding device;

[0023] Figure 2 It is a structural schematic diagram of a substrate clamping assembly in an automatic screw welding device;

[0024] Figure 3 A combined view of a rotating motor and a mounting seat in an automatic screw welding device;

[0025] Figure 4 The present invention is an exploded view of a substrate clamping assembly in an automatic screw welding device;

[0026] Figure 5 The figure is an internal view of a support frame in an automatic screw welding device;

[0027] Figure 6 This is a combined view of a box door and a round table in an automatic screw welding device;

[0028] Figure 7 An automatic screw welding device Figure 1 A magnified view of part A;

[0029] Figure 8 An automatic screw welding device Figure 1 A magnified view of part B;

[0030] Fig. 9 The figure is a schematic diagram of the structure of an auxiliary observation mechanism in an automatic screw welding device.

[0031] In the figure: 1, chassis; 2, welding chamber; 3, welding robot; 4, material picking robot; 5, side plate; 6, support frame; 7, circular groove; 8, annular guard plate; 9, concave guard plate; 10, stepping motor; 11, transmission gear; 12, annular support plate; 13, annular groove; 14, annular electromagnet; 15, gear ring; 16, annular end cover; 17, clamping plate; 18, strip groove; 19, fastening bolt; 20, ball bearing; 21, rotating motor; 22, mounting seat; 23, limit shaft; 24, arc groove; 25, collecting tank; 26 , oblique guide groove; 27, rotating groove; 28, metal baffle; 29, strip electromagnet; 30, box door; 31, round table; 32, round cavity; 33, drive motor; 34, linear guide; 35, linear motor; 36, telescopic motor; 37, annular slide rail; 38, annular slide groove; 39, limit slider; 40, slot hole; 41, rubber membrane; 42, through hole; 43, switch door; 44, electric push rod; 45, strip support plate; 46, rotating plate; 47, push plate; 48, fill light plate; 49, strip arc plate; 50, camera. DETAILED DESCRIPTION

[0032] 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.

[0033] As mentioned in the background technology of this application, research has found that existing welding devices usually need to fix the substrate first when welding screws and substrates, but the fixed substrate cannot adjust the angle on the horizontal and vertical planes as needed, which makes it inconvenient to perform more comprehensive multi-angle welding on the welding point, reduces the welding effect, and has certain defects.

[0034] In order to solve the above-mentioned defects, the present application discloses an automatic screw welding device, which can adjust the angles of the fixed substrate in the horizontal and vertical planes as needed, thereby facilitating more comprehensive multi-angle welding of the welding point and improving the welding effect.

[0035] The following will describe in detail how the solution of the present application solves the above technical problems in conjunction with the accompanying drawings.

[0036] See also Figures 1 to 9In an embodiment of the present invention, an automatic screw welding device includes a chassis 1, a welding chamber 2 is provided inside the chassis 1, and an auxiliary observation mechanism is provided on the inner wall of one side of the welding chamber 2, a side of the chassis 1 is movably connected to a door 30, and the inner side of the door 30 is fixedly connected to a dust-proof feeding assembly; a substrate clamping assembly is fixedly connected to a position near the middle of the bottom end surface of the welding chamber 2, a welding robot 3 is provided on one side of the substrate clamping assembly, a material-picking robot 4 is provided on the other side of the substrate clamping assembly, and an impurity collecting mechanism is provided below the substrate clamping assembly. The substrate clamping assembly of the present application can adjust the angle of the fixed substrate in the horizontal and vertical planes as needed, thereby facilitating multi-angle and more comprehensive welding of the welding point, thereby improving the welding effect.

[0037] In this embodiment, the substrate clamping assembly specifically includes: two side plates 5 relatively fixed on the bottom end surface of the welding cavity 2, a support frame 6 is rotatably connected between the two side plates 5, and a circular groove 7 is opened on one side of the support frame 6, an annular guard plate 8 is fixedly connected to the other side of the support frame 6, and the outer side of the annular guard plate 8 is fixedly connected to a concave guard plate 9, one side of the concave guard plate 9 is fixedly connected to a stepper motor 10, and the output shaft of the stepper motor 10 passes through the concave guard plate 9 and is fixedly connected to a transmission gear 11, an annular support plate 12 is provided inside the annular guard plate 8, and the outer side of the annular support plate 12 is fixedly connected to a gear ring 15 meshing with the transmission gear 11, an annular end cover 16 is fixedly connected to one side of the annular support plate 12, and four evenly distributed telescopic clamps are provided on one side of the annular end cover 16, a limiting support is provided between the support frame 6 and the annular support plate 12, and an annular electromagnet 14 is embedded on the inner side of the annular support plate 12. The substrate clamping assembly can fix the substrate in the hollow part, which not only reduces the interference of the fixing parts on the welding process, but also allows the residues and debris generated during the welding process to fall smoothly from the hollow part for collection, which is convenient for use. The annular guard plate 8 can protect the gear ring 15, and the concave guard plate 9 can protect the transmission gear 11.

[0038] In this embodiment, the position-limiting support member specifically includes: an annular groove 13 provided on the outer side of the annular support plate 12, a plurality of ball bearings 20 evenly distributed and matching with the annular groove 13 are arranged around the annular groove 13, and the inner ring of the ball bearing 20 is fixedly connected to the inner side of the support frame 6, and the outer ring of the ball bearing 20 is inserted into the annular groove 13 and movably connected thereto. The setting of the position-limiting support member can provide support for the annular support plate 12 while reducing the friction resistance of the annular support plate 12 during its rotation.

[0039] In this embodiment, the telescopic clamp specifically includes: a clamping plate 17 movably connected to one side of the annular end cover 16, a strip groove 18 is provided in the middle of one side of the clamping plate 17, and two parallel fastening bolts 19 are movably connected inside the strip groove 18, and one end of the fastening bolt 19 is screwed into the inside of the annular end cover 16. The setting of the telescopic clamp can adjust and fix substrates of different sizes as needed.

[0040] In this embodiment, a rotating motor 21 is fixedly connected to the inner side of one side plate 5, and the output shaft of the rotating motor 21 passes through the corresponding side plate 5 and is fixedly connected to the support frame 6. A mounting seat 22 is fixedly connected to one side of the rotating motor 21, and a side surface of the mounting seat 22 is threadedly connected to a limiting shaft 23. An arc groove 24 for the limiting shaft 23 to pass through is provided at a position corresponding to the limiting shaft 23 on one side surface of the support frame 6. The coordinated use of the limiting shaft 23 and the arc groove 24 can further improve the stability of the support frame 6 rotating around the side plate 5.

[0041] In this embodiment, the dust-proof feeding assembly specifically includes: a truncated table 31 fixed on the inner side of the box door 30, a circular cavity 32 is opened inside the truncated table 31, and a driving motor 33 is embedded in the center of the inner wall of one side of the circular cavity 32, the output shaft of the driving motor 33 is fixedly connected to a linear guide rail 34, and a linear motor 35 is movably connected to one side of the linear guide rail 34, and a limited slider 39 is fixedly connected to the other side of the linear guide rail 34, and an annular slide rail 37 is fixedly connected to the inner wall of one side of the circular cavity 32, and a side of the annular slide rail 37 is opened with a limit slider 39 matches the annular slide 38, the limit slider 39 is movably connected inside the annular slide 38, one side of the linear motor 35 is fixedly connected to the telescopic motor 36, one side of the truncated table 31 is provided with a plurality of circularly distributed slots 40, and the end wall of the slot 40 is provided with a through hole 42 connected to the circular cavity 32, the output shaft of the telescopic motor 36 can pass through the through hole 42, the opening position of the slot 40 is embedded with a rubber membrane 41, and the side of the rubber membrane 41 is provided with a cross opening, the setting of the rubber membrane 41 prevents dust in the air from entering the slot 40 and contaminating the screws. The dust-proof feeding assembly set in this application can place a large number of screws to be welded at one time, and prevent dust in the air from contacting and contaminating these screws, and at the same time, the screws are fed out sequentially after the welding work starts, with a high degree of overall automation and easy to use.

[0042] In this embodiment, the auxiliary observation mechanism specifically includes: a strip support plate 45 fixed on the inner wall of one side of the welding chamber 2, a rotating plate 46 is rotatably connected to one side of the strip support plate 45, and an electric push rod 44 is embedded on one side of the rotating plate 46, and a push plate 47 is fixedly connected to the output shaft of the electric push rod 44, and a fill light plate 48 is embedded in the middle position of one side of the push plate 47, and a strip arc plate 49 is fixedly connected to the top of one side of the push plate 47. The auxiliary observation mechanism set in this application can fill light behind the substrate after welding is completed, assisting the staff to observe the welding effect more carefully, and retract the fill light plate 48 during welding to prevent it from being damaged.

[0043] In this embodiment, the impurity collecting mechanism specifically includes: a collecting groove 25 provided on the bottom end surface of the welding chamber 2, an oblique guide groove 26 provided on the bottom end surface of the collecting groove 25, and a rotating groove 27 provided on the top end surface of the oblique guide groove 26 near the lower side, a metal baffle 28 rotatably connected inside the rotating groove 27, and a bar-shaped electromagnet 29 embedded on the top end surface of the rotating groove 27. The impurity collecting mechanism can effectively collect impurities.

[0044] In this embodiment, a switch door 43 is movably connected to the other side of the chassis 1. After the switch door 43 is opened, the substrate can be taken in and out or the welding effect on the substrate can be observed.

[0045] In this embodiment, a camera 50 is fixedly connected to the top surface of the welding chamber 2 near the middle. The camera 50 is used to monitor the welding process in real time, and provides a data basis for the external control terminal through the collected monitoring information.

[0046] The working principle of the present invention is: when in use, first, open the box door 30, then insert multiple screws into the slots 40 in sequence, and then close the box door 30. Next, the staff opens the switch door 43, puts the substrate on the substrate clamping assembly from the switch door 43 and fixes it through the telescopic clamp, that is, loosens the fastening bolts 19 so that the fastening bolts 19 can be relatively displaced with the strip grooves 18, adjusts the clamping plate 17 to a suitable extension length so that the end of the clamping plate 17 is pressed against the substrate, and then tightens the fastening bolts 19 to fix it.

[0047] After the substrate is fixed, the switch door 43 is closed, and the welding device starts to operate according to the preset program. During the process, the substrate clamping assembly adjusts the angle of the substrate on the horizontal plane and the vertical plane, and the material picking robot 4 takes a screw from the dustproof feeding assembly and presses it on the substrate to be welded, and the welding robot 3 then welds the screw and the substrate. It should be noted that in this embodiment, the material picking robot 4 takes the screw by a negative pressure suction fixation method. The specific process of adjusting the angle of the substrate by the substrate clamping assembly is: if the angle of the substrate on the vertical plane needs to be adjusted, it is only necessary to drive the support frame 6 to rotate around the side plate 5 to a suitable angle through the rotating motor 21, and the telescopic clamp on the support frame 6 and the substrate follow the rotation, thereby changing the angle of the substrate on the vertical plane. In addition, during the rotation of the support frame 6, the limit shaft 23 on the mounting seat 22 and the arc groove 24 are relatively displaced, which further improves the stability of the support frame 6 rotating around the side plate 5. If it is necessary to adjust the angle of the substrate in the horizontal plane, it is only necessary to drive the transmission gear 11 to rotate through the stepper motor 10. Since the transmission gear 11 is meshed with the ring gear 15, as the transmission gear 11 rotates, the ring gear 15 follows the rotation, and the annular support plate 12 fixedly connected to the ring gear 15 follows the rotation, thereby driving the annular end cover 16 together with the telescopic clamp and the substrate to rotate synchronously, thereby changing the angle of the substrate in the horizontal plane. In addition, during the rotation of the annular support plate 12, the ball bearing 20 rotates relatively in the annular groove 13. The ball bearing 20 can provide support for the annular support plate 12 while reducing the friction resistance of the annular support plate 12 during the rotation.

[0048] The specific process of the material-picking robot 4 taking the screws from the dust-proof feeding assembly is as follows: Since the plurality of slots 40 are distributed in a plurality of concentric circles, during the feeding process of the screws, the linear motor 35 moves slowly along the linear guide rail 34, so that the telescopic motor 36 is located on the circle where the target slot 40 is located, and then the driving motor 33 drives the entire linear guide rail 34 and the telescopic motor 36 to rotate synchronously, and the telescopic motor 36 is adjusted to align with the target slot 40. During the process, the limit slider 39 rotates in the annular groove 38 of the annular slide rail 37 to further improve the stability of the rotation of the linear guide rail 34. Subsequently, the telescopic motor 36 runs to extend the output shaft, and the output shaft of the telescopic motor 36 passes through the through hole 42 corresponding to the target slot 40, and pushes the screw in the target slot 40 out of the opening of the target slot 40, and finally the material-picking robot 4 absorbs the pushed-out screw. The dust-proof feeding assembly provided in the present application can place a large number of screws to be welded at one time and prevent dust in the air from contacting and contaminating the screws. At the same time, the screws are fed out sequentially after the welding work begins. The overall degree of automation is high and the use is convenient.

[0049] The welding process will produce some welding slag and welding machine residue, and there are metal residues in the welding slag. In order to effectively separate these recyclable metal residues, the staff energizes the annular electromagnet 14 to generate magnetism during the welding process, and the substrate is fixed in the hollow part, which makes the welding slag and residue fall into the collecting groove 25 of the impurity collection mechanism, and the metal residue is firmly adsorbed by the strong magnetic attraction of the annular electromagnet 14 during the falling process. After the remaining residue enters the collecting groove 25, it enters the oblique lead-out groove 26 under the action of its own gravity, and continues to slide downward in the oblique lead-out groove 26 until it is blocked by the metal baffle 28. When removing the residue later, it only needs to open the box door 30, energize the bar electromagnet 29 to generate magnetism, and push the metal baffle 28 inward to rotate it into the rotating groove 27. At this time, the bar electromagnet 29 attracts the metal baffle 28 through the magnetic adsorption force, and the oblique lead-out groove 26 is unblocked, and the residue falls asleep and flows out smoothly along the oblique lead-out groove 26. It should be noted that after these non-metallic residues are discharged, the annular electromagnet 14 is powered off, and the metal residues on the annular electromagnet 14 fall into the collecting tank 25 and flow out smoothly through the oblique discharge tank 26. After all the residues are cleaned up, the box door 30 is closed, the bar electromagnet 29 is powered off, and the metal baffle 28 rotates downward under its own gravity to block the oblique discharge tank 26.

[0050] When the welding work of all screws and substrates is completed, the staff needs to observe the overall welding effect. The specific process is: open the switch door 43, and adjust the substrate to a vertical state through the substrate clamping assembly. Then, the electric push rod 44 of the auxiliary observation mechanism runs to extend the output shaft, and the push plate 47 is pushed forward. During the process, the rotating plate 46 on the strip support plate 45 is pushed by the strip arc plate 49 on the push plate 47 to rotate. After the push plate 47 moves to the preset position, the fill light plate 48 faces the substrate to fill light for the substrate, so as to facilitate the staff to check the welding effect on the substrate more carefully. After the observation is completed, the electric push rod 44 retracts the output shaft, and the rotating plate 46 rotates downward to return to the initial position under the action of its own gravity, and the rotating plate 46 blocks the fill light plate 48 to prevent the fill light plate 48 from being damaged during the welding process.

[0051] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0052] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic screw welding device, characterized in that: The machine box comprises a case (1), a welding chamber (2) is provided inside the case (1), an auxiliary observation mechanism is provided on an inner wall of one side of the welding chamber (2), a case door (30) is movably connected to one side of the case (1), and a dust-proof feeding assembly is fixedly connected to the inner side of the case door (30); A substrate clamping assembly is fixedly connected to a position near the middle of the bottom end surface of the welding chamber (2), a welding robot (3) is provided on one side of the substrate clamping assembly, a material picking robot (4) is provided on the other side of the substrate clamping assembly, and an impurity collecting mechanism is provided below the substrate clamping assembly; The substrate clamping assembly specifically comprises: two side plates (5) relatively fixed on the bottom end surface of the welding cavity (2); a support frame (6) is rotatably connected between the two side plates (5); a circular groove (7) is provided on one side of the support frame (6); an annular guard plate (8) is fixedly connected to the other side of the support frame (6); a concave guard plate (9) is fixedly connected to the outer side of the annular guard plate (8); a stepping motor (10) is fixedly connected to one side of the concave guard plate (9); an output shaft of the stepping motor (10) passes through the concave guard plate (9) and is fixedly connected A transmission gear (11) is provided, an annular support plate (12) is provided inside the annular guard plate (8), and a gear ring (15) meshing with the transmission gear (11) is fixedly connected to the outer side of the annular support plate (12), an annular end cover (16) is fixedly connected to one side of the annular support plate (12), and four evenly distributed telescopic clamps are provided on one side of the annular end cover (16), a limiting support member is provided between the support frame (6) and the annular support plate (12), and an annular electromagnet (14) is embedded on the inner side of the annular support plate (12); The position-limiting support member specifically comprises: an annular groove (13) formed on the outer side surface of the annular support plate (12); a plurality of ball bearings (20) evenly distributed and matching the annular groove (13) are arranged around the annular groove (13); the inner ring of the ball bearing (20) is fixedly connected to the inner side surface of the support frame (6); and the outer ring of the ball bearing (20) is inserted into the annular groove (13) and movably connected thereto; The telescopic clamp specifically comprises: a clamping plate (17) movably connected to one side of the annular end cover (16); a strip groove (18) is provided in the middle of one side of the clamping plate (17); two parallel fastening bolts (19) are movably connected inside the strip groove (18); one end of the fastening bolt (19) is screwed into the inside of the annular end cover (16); A rotating motor (21) is fixedly connected to the inner side surface of one of the side plates (5), and the output shaft of the rotating motor (21) passes through the corresponding side plate (5) and is fixedly connected to the support frame (6); a mounting seat (22) is fixedly connected to one side of the rotating motor (21), and a limit shaft (23) is threadedly connected to one side of the mounting seat (22); and an arc groove (24) for the limit shaft (23) to pass through is provided on one side of the support frame (6) at a position corresponding to the limit shaft (23).

2. An automatic screw welding device according to claim 1, characterized in that: The dust-proof feeding assembly specifically comprises: a truncated table (31) fixed on the inner side of the box door (30), a circular cavity (32) being provided inside the truncated table (31), and a driving motor (33) being embedded in the center of the inner wall of one side of the circular cavity (32), an output shaft of the driving motor (33) being fixedly connected to a linear guide rail (34), and a linear motor (35) being movably connected to one side of the linear guide rail (34), a limiting slider (39) being fixedly connected to the other side of the linear guide rail (34), an annular slide rail (37) being fixedly connected to the inner wall of one side of the circular cavity (32), and a side of the annular slide rail (37) being movably connected to the linear guide rail (35). The surface is provided with an annular slide groove (38) matching with the limit slide block (39), the limit slide block (39) is movably connected inside the annular slide groove (38), one side of the linear motor (35) is fixedly connected with the telescopic motor (36), one side of the truncated table (31) is provided with a plurality of circularly distributed slots (40), and the end wall of the slot hole (40) is provided with a through hole (42) connected with the circular cavity (32), the output shaft of the telescopic motor (36) can pass through the through hole (42), and a rubber membrane (41) is embedded at the opening position of the slot hole (40), and a cross opening is provided on the side of the rubber membrane (41).

3. The automatic screw welding device according to claim 1, characterized in that: The auxiliary observation mechanism specifically comprises: a strip-shaped support plate (45) fixed on an inner wall of one side of the welding chamber (2); a side of the strip-shaped support plate (45) is rotatably connected to a rotating plate (46); an electric push rod (44) is embedded on one side of the rotating plate (46); an output shaft of the electric push rod (44) is fixedly connected to a push plate (47); a fill light plate (48) is embedded in the middle position of one side of the push plate (47); and a strip-shaped arc plate (49) is fixedly connected to the top of one side of the push plate (47).

4. The automatic screw welding device according to claim 1, characterized in that: The impurity collecting mechanism specifically comprises: a collecting groove (25) provided on the bottom end surface of the welding chamber (2), an oblique outlet groove (26) provided on the bottom end surface of the collecting groove (25), a rotating groove (27) provided on the top end surface of the oblique outlet groove (26) near the bottom, a metal baffle (28) rotatably connected inside the rotating groove (27), and a bar-shaped electromagnet (29) embedded on the top end surface of the rotating groove (27).

5. The automatic screw welding device according to claim 1, characterized in that: A switch door (43) is movably connected to the other side of the chassis (1).

6. The automatic screw welding device according to claim 1, characterized in that: A camera (50) is fixedly connected to a position close to the middle of the top surface of the welding cavity (2).

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