A screw welding apparatus

Abstract

The application belongs to the technical field of screw welding, and discloses a screw welding device, which comprises a portal frame fixed on a telescopic part, a welding gun slidingly connected between the lower part of the portal frame, the welding gun moving up and down on the portal frame, welding heads fixed at both ends of the welding gun, a screw inlet for screw feeding being formed on one side of the welding head, a limiting sleeve fixed at the end of the screw inlet, an extruding head fixed at the position corresponding to the limiting sleeve in the middle of the portal frame, and a rotating assembly connected between the portal frame and the welding gun; the screw is fed into the screw inlet above, the telescopic part is telescoped to drive the portal frame to move downwards and drive the welding head below to move towards the welding plate; the application can weld the screw below, limit the screw above, and change the positions of the screws above and below when returning to the initial position, so as to provide convenience for the welding of the next screw, increase the welding efficiency, and reduce the labor intensity.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of screw welding, and specifically relates to a screw welding device. BACKGROUND

[0002] Screw, also known as screw (screw nail) and screw rod (screw rod), is actually a general term, while screw nail and screw rod are different. Screw nail is generally called wood screw, which has a sharp tip at the front end, a large pitch, and is generally used for fastening wooden parts and plastic parts. Screw rod is machine screw (mechanical screw), which has a flat head at the front end, a small and uniform pitch, and is generally used for fastening metal and machine parts; screw is a general term for fasteners and is a common spoken language. Screw is an indispensable industrial necessity in daily life: very small screws are used in cameras, glasses, watches, electronics, etc.; general screws are used in televisions, electrical products, musical instruments, furniture, etc.; large screws and nuts are used in engineering, construction and bridges; and screws of various sizes are used in transportation tools, airplanes, electric trains and cars. Screw plays an important role in industry, and as long as there is industry on earth, the function of screw will always be important.

[0003] Screw welding generally refers to the connection of screw head and base material by welding. On the automobile, the luggage rack needs to be welded to the base plate or directly welded to the car, and then the remaining support is installed.

[0004] When using the screw welding gun for welding, the screws need to be placed one by one on the welding head, which not only affects the welding efficiency, but also increases the labor intensity during placement. SUMMARY

[0005] To solve the problems in the background art, the application provides a screw welding device, which has the advantages of increasing welding efficiency and reducing labor intensity.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a gantry is fixed on a telescopic member, the telescopic member can be driven downward by a pneumatic cylinder or manually, the specific condition is selected according to the actual situation, a welding gun is slidably connected between the lower parts of the gantry, the welding gun moves up and down on the gantry, welding heads are fixed at both ends of the welding gun, a screw inlet for placing screws is formed in one side of the welding head, a limiting sleeve is fixed at the end of the screw inlet, an extrusion head is fixed at the position corresponding to the limiting sleeve in the middle of the gantry, the extrusion head is made of elastic material such as rubber to prevent damage to the screw and affect normal use, and a rotating assembly is connected between the gantry and the welding gun.

[0007] The screw is put into the screw inlet on the upper part, the telescopic part is telescoped to drive the portal frame to move downward, the lower welding head is driven to move to the welding plate to weld, the portal frame moves downward to drive the extrusion head to extrude the screw on the upper part to be limited in the limiting sleeve, after the telescopic part is retracted, the rotating assembly drives the welding gun to turn over upward and downward.

[0008] Preferably, the portal frame comprises side frames on both sides and a cross beam fixed between the top of the side frames, the cross beam is welded and fixed with the side frames, the welding gun is located between the lower part of the side frames, and the rotating assembly is located at the connection between the welding gun and the side frame.

[0009] Preferably, the rotating assembly comprises rotating shafts fixed on both sides of the middle part of the welding gun, a sliding groove for rotating and sliding of the rotating shafts is formed in the side frame, lubricating oil is coated in the sliding groove or an oil film is added to reduce friction and increase service life, a resilient telescopic rod is vertically fixed at one end of the sliding groove, the resilient telescopic rod is a prior art telescopic rod with a return spring added inside, an arc-shaped clamping plate for limiting the rotating shaft is vertically fixed at the bottom end of the resilient telescopic rod, a circle can also be used instead, and the specific use condition is selected according to the actual use condition, a turnover disc is vertically fixed at the end of the rotating shaft, and a driving member for driving the turnover disc by 180° is fixed on the inner wall of the sliding groove.

[0010] Preferably, the turnover disc comprises a disc vertically fixed at the end of the rotating shaft, the disc is a cylinder, stop blocks are symmetrically fixed on the outer periphery of the disc, the disc is smoothly connected between the stop blocks and one side of the disc, and a guide groove for the driving member to move downward is formed at the position of the stop blocks.

[0011] Preferably, the driving member comprises a connecting plate fixed on the inner wall of the sliding groove, a receiving groove is formed at the bottom end of the connecting plate, a baffle is rotatably connected in the receiving groove, a torsional spring is connected between the baffle and the receiving groove, and the torsional spring drives the baffle to be away from the receiving groove in a normal state.

[0012] Preferably, the arc-shaped clamping plate is in a circular shape, the arc-shaped clamping plate and the rotating shaft are concentric circles in cross section, and the bottom of the arc-shaped clamping plate is located at the lower part of the rotating shaft.

[0013] Preferably, the stroke of the resilient telescopic rod is greater than the stroke of the rotating shaft moving upward.

[0014] Preferably, a limiting groove for limiting sliding of the turnover disc is arranged in the sliding groove.

[0015] Preferably, the stop blocks are integrally formed with the disc, and the side of the stop blocks close to the guide groove is consistent with the length direction of the guide groove.

[0016] Preferably, the end of the baffle away from the receiving groove is inverted at a right angle, and the thickness of the baffle is the same as the thickness of the receiving groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: by using the rotating component, the lower screw can be welded, the upper screw can be fixed, and when returning to the initial position, the positions of the upper and lower screws can be swapped to facilitate the welding of the next screw, thereby increasing welding efficiency and reducing labor intensity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a screw welding device according to the present invention;

[0019] Figure 2 This is a front view of a screw welding device according to the present invention;

[0020] Figure 3 This is a side view of a screw welding device according to the present invention;

[0021] Figure 4 This invention relates to a screw welding device. Figure 3 A schematic diagram of the half-section structure at point AA along the middle edge;

[0022] Figure 5 This is a schematic diagram of the installation structure of the rotating disc of a screw welding equipment according to the present invention;

[0023] Figure 6 This invention relates to a screw welding device. Figure 5 Enlarged structural diagram at point B;

[0024] Figure 7 This is a schematic diagram of the structure of a screw welding equipment flipper according to the present invention.

[0025] In the diagram: 100, side frame; 200, welding torch; 300, welding head; 400, screw inlet; 500, limit sleeve; 600, crossbeam; 700, extrusion head; 900, rotating shaft; 1010, rotating assembly; 1011, slide rail;

[0026] 1012, Elastic telescopic rod; 1013, Arc-shaped clamping plate; 1014, Flipping disc; 1014a, Disc; 1014b, Stop block; 1014c, Guide groove; 1015, Connecting plate; 1016, Storage groove; 1017, Baffle; 1018, Torsion spring. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] As Figures 1 to 7 The present application provides a screw welding equipment, including gantry fixed on the telescopic piece, the telescopic piece can be used with cylinder also can be used with manpower to press down, the specific circumstances are selected according to actual situation, sliding connection has welding torch 200 between the lower part of gantry, welding torch 200 belongs to prior art, here no longer tedious, welding torch 200 moves on gantry, welding torch 200 can use existing two symmetrical fixed together, welding head 300 is fixed at both ends of welding torch 200, welding head 300 is used for the fixation and welding of screw, the screw inlet 400 for the screw is placed in the side of welding head 300, for the placement of screw, the end of screw inlet 400 is fixed with limit sleeve 500, so as to limit the head of screw, prevent falling off, affect welding use, the extrusion head 700 is fixed at the position corresponding to limit sleeve 500 in the middle of gantry, the head of screw is extruded into limit sleeve 500, prevent screw from falling off, the rotating assembly 1010 is connected between gantry and welding torch 200;

[0029] Screw is placed into the screw inlet 400 on the top, the telescopic piece telescopic drives gantry to move down, drives the welding head 300 below to move to the welding plate, carries out welding, the extrusion head 700 is extruded to the screw on the top and is limited in limit sleeve 500 after the telescopic piece retracts, the rotating assembly 1010 drives welding torch 200 to overturn.

[0030] When using, the screw is placed into the welding head 300 on the top through the screw inlet 400, when the telescopic piece telescopic drives gantry to move down, the welding head 300 below is on the position to be welded, when gantry continues to move down, the rotating assembly 1010 moves along, when the extrusion head 700 contacts the screw on the top, the screw is extruded into limit sleeve 500, when the welding head 300 below and gantry no longer move, the welding head 300 below is pushed and is resisted at the position to be welded and carries out welding, after welding is completed, the screw below is separated from welding head 300, when the telescopic piece retracts, the rotating assembly 1010 drives welding torch 200 to rotate, when gantry restores to original position, the welding head 300 below overturns to the top, places screw, the welding head 300 on the top overturns to the bottom and carries out welding, improves welding efficiency.

[0031] In the present application, the gantry includes the side frame 100 on both sides and the cross beam 600 fixed between the top of side frame 100, the cross beam 600 is used for the fixation of extrusion head 700, the side frame 100 on both sides and the cross beam 600 between constitute Π, the welding torch 200 is located between the lower part of side frame 100, and the rotating assembly 1010 is located at the connection of welding torch 200 and side frame 100.

[0032] When using, the side frame 100 and cross beam 600 are used, so as to facilitate the welding and disassembly of the whole.

[0033] The present application, rotating assembly 1010 includes fixed in the middle of the welding gun 200 both sides of the rotating shaft 900, side frame 100 is provided with a sliding groove 1011 for rotating and sliding of the rotating shaft 900, the sliding groove 1011 is built-in lubricating oil, in order to reduce friction, increase the service life, the sliding groove 1011 one end is vertically fixed with elastic telescopic rod 1012, elastic telescopic rod 1012 is prior art, telescopic rod inside adds reset spring, the bottom of the elastic telescopic rod 1012 is vertically fixed with arc-shaped clamping plate 1013 for limiting the rotating shaft 900, arc-shaped clamping plate 1013 is used to limit the position of the rotating shaft 900, the rotating shaft 900 end is vertically fixed with turnover disc 1014, the inner wall of the sliding groove 1011 is fixed with driving element for driving turnover disc 1014 to 180 °.

[0034] In use, in the process of moving down the side frame 100, the welding head 300 below is blocked by the position to be welded, the rotating shaft 900 moves up in the sliding groove 1011, the elastic telescopic rod 1012 is extruded, the turnover disc 1014 does not rotate, the driving element moves to the lower side of the turnover disc 1014, when the side frame 100 no longer moves down, the telescopic element no longer telescopes, under the condition of elastic recovery of the elastic telescopic rod 1012, the side frame 100 is driven to move up, relative to the downward movement of the welding head 300, when the side frame 100 moves up, the driving element drives the turnover disc 1014 to rotate, the rotation of the turnover disc 1014 drives the welding gun 200 to rotate through the rotating shaft 900, when the rotating shaft 900 on the welding head 300 returns to the initial position, the turnover disc 1014 rotates 180 °, so that the welding head 300 below rotates to the upper side, then the screw is put into the screw inlet 400, and the cycle is repeated in sequence, the speed of screw replacement is increased, and a screw placing disc can be added at the position of the screw inlet 400 on the upper side, so that the screw can be better taken.

[0035] The present application, the turnover disc 1014 includes a disc 1014a vertically fixed at the end of the rotating shaft 900, the disc 1014a is circular, the disc 1014a is symmetrically fixed with a stopper 1014b at the outer periphery, the stopper 1014b has two positions, which are oppositely arranged, the stopper 1014b has the same angle of deflection, and the disc 1014a is provided with a guide groove 1014c at the position of the stopper 1014b to enable the driving element to move downward normally.

[0036] In use, in the initial state, the driving member is located at the position of the upper stopper 1014b, when the driving member moves downward relative to the stopper 1014b, the bottom of the driving member moves downward through the guide groove 1014c to the surface of the disc 1014a, when the driving member moves to the position of the lower stopper 1014b, the driving member is hooked on the lower stopper 1014b, when the driving member moves upward relative to the disc 1014a, the driving member blocks the lower stopper 1014b, because the driving member continues to move upward, the stopper 1014b rotates until the lower stopper 1014b rotates to the upper position, and then is blocked by the driving member and no longer rotates, thereby completing the turnover.

[0037] In the present application, the driving member comprises a connecting plate 1015 fixed on the inner wall of the sliding groove 1011, and there is a gap or the connecting plate 1015 is just attached to the disc 1014a on the outer side of the disc 1014a, so as to ensure the movement of the connecting plate 1015 on the outer side of the disc 1014a, the connecting plate 1015 is welded on the inner wall of the sliding groove 1011, the bottom end of the connecting plate 1015 is provided with a receiving groove 1016, the receiving groove 1016 is rotatably connected with a baffle 1017, the baffle 1017 is connected with a torsion spring 1018 between the receiving groove 1016, the torsion spring 1018 normally makes the baffle 1017 away from the receiving groove 1016, and the torsion spring 1018 in the initial state makes the baffle 1017 located on the outer side of the receiving groove 1016.

[0038] In use, in the initial state, the baffle 1017 is blocked at the position of the upper stopper 1014b, when the connecting plate 1015 moves downward relative to the disc 1014a, the baffle 1017 is in contact with the guide groove 1014c, in the process of moving downward of the baffle 1017 in the guide groove 1014c, the baffle 1017 rotates to the direction of the receiving groove 1016, the torsion spring 1018 retracts, and then the connecting plate 1015 drives the baffle 1017 to move downward on the surface of the disc 1014a, when the baffle 1017 moves to the position of the lower stopper 1014b, the baffle 1017 enters the lower guide groove 1014c first, under the condition of recovery of the torsion spring 1018, the baffle 1017 rotates to the outer side of the receiving groove 1016, when the baffle 1017 completely reaches the lower position, the torsion spring 1018 returns to the initial state, the baffle 1017 is in contact with the lower stopper 1014b, when the connecting plate 1015 rotates upward relative to the disc 1014a, the baffle 1017 blocks the stopper 1014b, so that the disc 1014a rotates, when the upper and lower stoppers 1014b of the disc 1014a rotate to be in contact with the baffle 1017, the disc 1014a no longer rotates, thereby completing the turnover effect.

[0039] The arc-shaped clamping plate 1013 is in a circular shape, and the arc-shaped clamping plate 1013 and the rotating shaft 900 are concentric circles in cross section, so as to better limit the rotating shaft 900, and the bottom of the arc-shaped clamping plate 1013 is located at the lower position of the rotating shaft 900, so as to prevent the rotating shaft 900 from being separated from the arc-shaped clamping plate 1013.

[0040] In use, when the arc-shaped clamping plate 1013 moves up and down or rotates, the position of the rotating shaft 900 is limited.

[0041] In the application, the stroke of the elastic telescopic rod 1012 is greater than the stroke of the rotating shaft 900 moving up.

[0042] In use, the distance of preventing the elastic telescopic rod 1012 from retracting is not enough, which affects the distance of the rotating shaft 900 moving up.

[0043] In the application, the sliding groove 1011 is internally provided with a limiting groove for limiting the sliding of the turnover disc 1014.

[0044] Through the use of the limiting groove, the position of the sliding and rotating of the turnover disc 1014 can be conveniently limited.

[0045] In the application, the stop block 1014b is integrally formed with the disc 1014a, the structural strength is increased, and the side of the stop block 1014b close to the guide groove 1014c is consistent with the length direction of the guide groove 1014c, so as to better use the stop block 1014b.

[0046] In the application, the baffle 1017 is inverted at a right angle away from one end of the receiving groove 1016, and the thickness of the baffle 1017 is the same as the thickness of the receiving groove 1016, so as to limit the baffle 1017 to only rotate back and forth in the receiving groove 1016, and cannot make other movements.

[0047] The principle and process of the present application: the screw is put into the upper welding head 300 through the screw inlet 400, when the telescopic member drives the side frame 100 and the cross beam 600 to move downwards, the lower welding head 300 is on the position to be welded, when the side frame 100 continues to move downwards, the rotating shaft 900 on the welding head 300 moves upwards on the sliding groove 1011, and then squeezes the elastic telescopic rod 1012, the baffle 1017 contacts with the guide groove 1014c, in the process of moving downwards of the baffle 1017 in the guide groove 1014c, the baffle 1017 rotates to the direction of the storage groove 1016, the torsional spring 1018 retracts, and then the connecting plate 1015 drives the baffle 1017 to move downwards on the surface of the disc 1014a, when the baffle 1017 moves to the position of the lower stopper 1014b, it will first enter the lower guide groove 1014c, under the condition of recovery of the torsional spring 1018, the baffle 1017 rotates to the outside of the storage groove 1016, when the baffle 1017 reaches the lower position, the torsional spring 1018 returns to the initial state, when the extrusion head 700 contacts with the upper screw, the screw is extruded into the limiting sleeve 500, and no longer moves downwards, when the lower welding head 300 no longer moves, the lower welding head 300 is pushed to abut against the position to be welded for welding, after the welding is completed, the lower screw is separated from the welding head 300, when the telescopic member retracts, the telescopic member no longer stretches, under the condition of elastic recovery of the elastic telescopic rod 1012, the side frame 100 moves upwards, relative to the downwards movement of the welding head 300, when the side frame 100 moves upwards, the baffle 1017 stops the stopper 1014b, so that the disc 1014a rotates, when the upper and lower stoppers 1014b on the disc 1014a contact with the baffle 1017, the rotation of the turnover disc 1014 drives the welding gun 200 to rotate through the rotating shaft 900, and no longer rotates, so that the turnover effect is completed, when the rotating shaft 900 on the welding head 300 returns to the initial position, the turnover disc 1014 rotates by 180°, so that the lower welding head 300 rotates to the upper position, then the screw is put into the screw inlet 400, and the cycle is repeated, so that the speed of screw replacement is increased and the welding efficiency is improved.

[0048] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0049] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A screw welding apparatus characterized by: The utility model provides an automatic welding device, including the gantry fixed on the telescopic spare, the welding torch (200) of sliding joint between lower part of gantry, welding torch (200) moves on the gantry, welding head (300) is fixed in both ends of welding torch (200), the screw inlet (400) for screw putting is set up in one side of welding head (300), the limit sleeve (500) is fixed in the end of screw inlet (400), the extrusion head (700) is fixed in the position corresponding to limit sleeve (500) of the middle part of gantry, and the rotary assembly (1010) is connected between the gantry and welding torch (200), the screw is put into the screw inlet (400) above, and the telescopic spare telescopic drives the gantry to move down, drives the welding head (300) below to move to the welding plate, carries out welding, and the extrusion head (700) is extruded to the screw above and is limited in the limit sleeve (500) after the telescopic spare retracts, and the rotary assembly (1010) drives welding torch (200) to overturn up and down, The gantry includes side frames (100) on both sides and a cross beam (600) fixed between the top of the side frames (100), the welding torch (200) is located between the lower part of the side frames (100), and the rotary assembly (1010) is located at the connection between the welding torch (200) and the side frames (100). The rotary assembly (1010) includes a rotating shaft (900) fixed on both sides of the middle part of the welding torch (200), the side frames (100) are provided with a sliding groove (1011) for the rotation and sliding of the rotating shaft (900), one end of the sliding groove (1011) is vertically fixed with an elastic telescopic rod (1012), the bottom end of the elastic telescopic rod (1012) is vertically fixed with an arc-shaped clamping plate (1013) for limiting the rotating shaft (900), the end of the rotating shaft (900) is vertically fixed with a turnover disc (1014), and the inner wall of the sliding groove (1011) is fixed with a driving member for driving the turnover disc (1014) by 180°.

2. The screw welding apparatus of claim 1, wherein: The turnover disc (1014) includes a disc (1014a) vertically fixed on the end of the rotating shaft (900), the disc (1014a) is symmetrically fixed with a stopper (1014b) on the outer periphery, and the disc (1014a) is provided with a guide groove (1014c) at the position of the stopper (1014b) for the downward movement of the driving member.

3. The screw welding apparatus of claim 2, wherein: The driving member includes a connecting plate (1015) fixed on the inner wall of the sliding groove (1011), the bottom end of the connecting plate (1015) is provided with a receiving groove (1016), the receiving groove (1016) is rotatably connected with a baffle (1017), the baffle (1017) and the receiving groove (1016) are connected with a torsional spring (1018), and the torsional spring (1018) normally drives the baffle (1017) away from the receiving groove (1016).

4. The screw welding apparatus of claim 1, wherein: The arc-shaped clamping plate (1013) is in a circular shape, the arc-shaped clamping plate (1013) and the rotating shaft (900) are concentric circles in cross section, and the bottom of the arc-shaped clamping plate (1013) is located at the lower part of the rotating shaft (900).

5. The screw welding apparatus of claim 1, wherein: The stroke of the elastic telescopic rod (1012) is greater than the stroke of the upward movement of the rotating shaft (900).

6. The screw welding apparatus of claim 1, wherein: The chute (1011) is internally provided with a limiting groove for limiting the sliding of the turnover disc (1014).

7. The screw welding apparatus of claim 2, wherein: The stopper (1014b) is integrally formed with the disc (1014a), and the stopper (1014b) is close to the side of the guide groove (1014c) and is consistent with the length direction of the guide groove (1014c).

8. The screw welding apparatus of claim 3, wherein: The baffle (1017) is inverted at a right angle away from one end of the receiving groove (1016), and the thickness of the baffle (1017) is the same as the thickness of the receiving groove (1016).

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