Double-end rotating disc type spot welding machine

Abstract

The utility model provides a double-end rotating disc type spot welding machine which comprises a welding machine frame, a first upper welding head and a second upper welding head which are arranged side by side at the top of the welding machine frame, a first lower welding head and a second lower welding head which are arranged side by side at the bottom of the welding machine frame, and a double-station rotating mechanism arranged on one side of the welding machine frame. The double-station swing mechanism is provided with a first position and a second position, and when the double-station swing mechanism is located at the first position, the to-be-welded part is located inside the welding rack, and when the double-station swing mechanism is located at the second position, the to-be-welded part is located outside the welding rack. According to the automatic spot welding machine, a to-be-welded part can be placed on the double-station swing mechanism, then the spot welding machine is started, the double-station swing mechanism transfers the to-be-welded part from the second position to the first position, the four welding heads work at the same time, the to-be-welded part is welded, the part is conveyed through the double-station swing mechanism instead of manual feeding and discharging of workers, and the labor intensity of workers is lowered. And the four welding heads are used for welding simultaneously, so that the welding efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding devices, in particular to a double-head turntable spot welding machine. Background Art

[0002] Spot welding machine is a mechanical device that adopts the principle of double-sided double-point overcurrent welding. When working, two electrodes pressurize the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes, and when the welding current flows from one electrode to the other electrode, an instantaneous heat fusion is formed at the two contact resistance points, and the welding current instantly flows from the other electrode along the two workpieces to this electrode to form a loop, and will not damage the internal structure of the welded workpiece. Most existing spot welding machines have an upper welding head and a lower welding head. Workers manually place the workpiece to be welded between the two welding heads for welding, and the welding efficiency is low. Utility Model Content

[0003] In view of this, an embodiment of the utility model provides a double-head turntable spot welding machine to eliminate or improve one or more defects existing in the prior art.

[0004] The utility model provides a double-head turntable spot welding machine, comprising: a welding frame, a first upper welding head and a second upper welding head arranged side by side are arranged on the top of the welding frame, a first lower welding head and a second lower welding head arranged side by side are arranged on the bottom of the welding frame, a double-station rotating mechanism is arranged on one side of the welding frame, the double-station rotating mechanism has a first position and a second position, and the double-station rotating mechanism is configured such that when it is located at the first position, a part to be welded is located inside the welding frame, and when it is located at the second position, the part to be welded is located outside the welding frame.

[0005] Preferably, the double-station rotary mechanism includes a loading frame, which is arranged on one side of the welding frame. A rotating assembly and an ejection assembly are provided on the loading frame. The rotating assembly is used to switch the parts to be welded between the first position and the second position, and the ejection assembly is used to unload the welded parts.

[0006] Preferably, the rotating assembly includes a turntable, which is rotatably connected to the top of the loading frame, and a clearance opening is opened on the turntable. At least two positioning pins are fixedly connected to the top of the turntable, and the positioning pins are located on both sides of the clearance opening. The turntable is driven by a power assembly.

[0007] Preferably, the power assembly includes a first support platform, a first motor and a reducer, the first support platform is fixedly connected to the loading frame, the reducer is fixedly connected to the first support platform, and the reducer drives the turntable to rotate through the reducer.

[0008] Preferably, a connecting rod is fixedly connected to the loading frame, a rotating wheel is rotatably connected to the top of the connecting rod, and an outer side wall of the rotating wheel is in contact with the bottom of the turntable.

[0009] Preferably, the ejection assembly includes a second support platform, the second support platform is fixedly connected to the loading frame, the top of the second support platform is fixedly connected to a cylinder, the movable end of the cylinder is fixedly connected to a push plate, and a plurality of push rods are fixedly connected above the push plate, and the push rods are used to lift the welded parts.

[0010] Preferably, the first upper welding head and the second upper welding head are respectively connected to a cylinder, and the cylinder is sequentially connected to an upper welding head Y-axis walking mechanism and an upper welding head X-axis walking mechanism, and the upper welding head X-axis walking mechanism is arranged on the welding frame; the first lower welding head and the second lower welding head are respectively connected to a cylinder, and the cylinder is sequentially connected to a lower welding head Y-axis walking mechanism and a lower welding head X-axis walking mechanism, and the lower welding head X-axis walking mechanism is arranged on the welding frame.

[0011] Preferably, the upper welding head Y-axis walking mechanism, the upper welding head X-axis walking mechanism, the lower welding head Y-axis walking mechanism and the lower welding head X-axis walking mechanism are any one of a screw-nut mechanism, a crank-connecting rod mechanism and a gear rack mechanism.

[0012] Preferably, the screw-nut mechanism comprises a fixing plate, to which a second motor is fixedly connected, to which an output shaft of the second motor is fixedly connected a screw, and to which a screw nut is threadedly connected.

[0013] Preferably, a starting pedal is provided at the bottom of the loading frame.

[0014] The double-head turntable spot welding machine of the utility model, when in use, places the parts to be welded on the double-station rotary mechanism, then starts the spot welding machine, the double-station rotary mechanism transfers the workpiece to be welded from the second position to the first position, the first upper welding head, the second upper welding head, the first lower welding head and the second lower welding head work simultaneously to weld the parts to be welded, the parts are transported by the double-station rotary mechanism instead of manual loading and unloading by workers, and the four welding heads weld simultaneously, greatly improving the welding efficiency.

[0015] Additional advantages, purposes, and features of the present invention will be partially described in the following description, and will become partially apparent to those skilled in the art after studying the following, or may be learned from the practice of the present invention. The purposes and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0016] Those skilled in the art will understand that the purposes and advantages that can be achieved by the present invention are not limited to the above specific description, and the above and other purposes that can be achieved by the present invention will be more clearly understood based on the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute a limitation of the present invention. The components in the drawings are not drawn to scale, but are only for the purpose of illustrating the principles of the present invention. In order to facilitate the illustration and description of some parts of the present invention, the corresponding parts in the drawings may be enlarged, that is, they may become larger relative to other components in the exemplary device actually manufactured according to the present invention. In the drawings:

[0018] Figure 1 The figure is a three-dimensional structural schematic diagram of a double-head turntable spot welding machine in one embodiment of the utility model.

[0019] Figure 2 It is a front view of a double-head turntable spot welding machine in one embodiment of the utility model.

[0020] Figure 3 It is a three-dimensional structural schematic diagram of a double-station rotary mechanism in one embodiment of the utility model.

[0021] Figure 4 This is a three-dimensional structural schematic diagram from another perspective of the double-station rotary mechanism in one embodiment of the utility model.

[0022] Figure 5 It is a schematic diagram of the structure of the rotating wheel in one embodiment of the utility model.

[0023] Figure 6 It is a structural schematic diagram of a screw nut mechanism in one embodiment of the utility model.

[0024] Figure 7 It is a schematic structural diagram of the first upper welding head in one embodiment of the utility model.

[0025] Figure 8 It is a schematic structural diagram of the second lower welding head in one embodiment of the utility model.

[0026] 1. Welding frame; 2. X-axis walking mechanism of upper welding head; 3. Y-axis walking mechanism of upper welding head; 4. First lower welding head; 5. Second lower welding head; 6. First upper welding head; 7. Second upper welding head; 8. X-axis walking mechanism of lower welding head; 9. Y-axis walking mechanism of lower welding head; 10. Double-station rotary mechanism; 11. Loading frame; 12. First supporting platform; 13. First motor; 14. Reducer; 15. Turntable; 16. Connecting rod; 17. Rotating wheel; 18. Starting foot pedal; 19. Second supporting platform; 21. Push plate; 22. Push rod; 23. Fixed plate; 24. Second motor; 25. Lead screw; 26. Lead screw nut; 27. Make way; 28. Positioning pin. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the implementation mode and the accompanying drawings. Here, the schematic implementation mode of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.

[0028] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0029] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0030] It should also be noted that, unless otherwise specified, the term “connection” herein may refer not only to a direct connection but also to an indirect connection involving an intermediate.

[0031] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0032] The utility model embodiment provides a double-head turntable spot welding machine, comprising: a welding frame 1, a first upper welding head 6 and a second upper welding head 7 arranged side by side are arranged on the top of the welding frame 1, a first lower welding head 4 and a second lower welding head 5 arranged side by side are arranged on the bottom of the welding frame 1, a double-station rotating mechanism 10 is arranged on one side of the welding frame 1, the double-station rotating mechanism 10 has a first position and a second position, and the double-station rotating mechanism 10 is configured such that when it is in the first position, the part to be welded is located inside the welding frame 1, and when it is in the second position, the part to be welded is located outside the welding frame 1.

[0033] Reference Figure 1-Figure 8, place the parts to be welded on the double-station rotary mechanism 10, then start the spot welding machine, the double-station rotary mechanism 10 transfers the workpiece to be welded from the second position to the first position, the first upper welding head 6, the second upper welding head 7, the first lower welding head 4 and the second lower welding head 5 work simultaneously to weld the parts to be welded, and the parts are transported by the double-station rotary mechanism 10 instead of the workers manually loading and unloading the parts. The four welding heads weld at the same time, which greatly improves the welding efficiency.

[0034] Further optimization scheme, the double-station rotary mechanism 10 includes a loading rack 11, which is arranged on one side of the welding rack 1. The loading rack 11 is provided with a rotating assembly and an ejecting assembly. The rotating assembly is used to switch the parts to be welded between the first position and the second position, and the ejecting assembly is used to unload the welded parts. When in use, the parts to be welded are placed on the rotating assembly, and the rotating assembly transports the parts to the welding position. After the parts are welded, the rotating assembly transports the parts to the loading rack 11, and the ejecting assembly lifts up the welded parts to facilitate workers to remove them.

[0035] Further optimization scheme, the rotating assembly includes a turntable 15, the turntable 15 is rotatably connected to the top of the feeding frame 11, a clearance opening 27 is opened on the turntable 15, at least two positioning pins 28 are fixedly connected to the top of the turntable 15, the positioning pins 28 are located on both sides of the clearance opening 27, and the turntable 15 is driven by a power assembly. Workers place parts on the two positioning pins 28 to prevent the parts from shifting, and the clearance opening 27 is used for welding the welding head.

[0036] Further optimizing the scheme, the power assembly includes a first support platform 12, a first motor 13 and a reducer 14, the first support platform 12 is fixedly connected to the feeding frame 11, the reducer 14 is fixedly connected to the first support platform 12, and the reducer 14 drives the turntable 15 to rotate through the reducer 14. The first support platform 12 plays a supporting role, the first motor 13 outputs power, and the reducer 14 reduces the speed and increases the torque of the output power to drive the turntable 15 to rotate.

[0037] Further optimizing the scheme, the feeding frame 11 is fixedly connected with a connecting rod 16, and the top of the connecting rod 16 is rotatably connected with a rotating wheel 17, and the outer side wall of the rotating wheel 17 contacts the bottom of the rotating disk 15. The rotating wheel 17 rolls and rubs with the bottom of the rotating disk 15, and at the same time plays the role of supporting the rotating disk 15.

[0038] Further optimization scheme, the ejection assembly includes a second support platform 19, the second support platform 19 is fixedly connected to the loading frame 11, the top of the second support platform 19 is fixedly connected to a cylinder, the movable end of the cylinder is fixedly connected to a push plate 21, and a plurality of push rods 22 are fixedly connected above the push plate 21, and the push rods 22 are used to lift the welded parts. When the cylinder is extended, it drives the push plate 21 to move upward, and the push rods 22 on the push plate 21 lift the parts, making it convenient for workers to take the parts away.

[0039] Further optimization scheme, the first upper welding head 6 and the second upper welding head 7 are respectively connected to cylinders, which are sequentially connected to the upper welding head Y-axis walking mechanism 3 and the upper welding head X-axis walking mechanism 2, and the upper welding head X-axis walking mechanism 2 is arranged on the welding frame 1; the first lower welding head 4 and the second lower welding head 5 are respectively connected to cylinders, which are sequentially connected to the lower welding head Y-axis walking mechanism 9 and the lower welding head X-axis walking mechanism 8, and the lower welding head X-axis walking mechanism 8 is arranged on the welding frame 1. Both the upper welding head and the lower welding head have three degrees of freedom, and can flexibly weld parts.

[0040] According to a further optimization scheme, the upper welding head Y-axis walking mechanism 3, the upper welding head X-axis walking mechanism 2, the lower welding head Y-axis walking mechanism 9 and the lower welding head X-axis walking mechanism 8 are any one of a screw-nut mechanism, a crank-connecting rod mechanism and a gear rack mechanism.

[0041] In a further optimized solution, the screw nut mechanism includes a fixed plate 23, a second motor 24 is fixedly connected to the fixed plate 23, a screw 25 is fixedly connected to the output shaft of the second motor 24, and the screw nut 26 is threadedly connected to the screw nut 25. The screw nut 26 is fixedly connected to the slider, the slider is fixed to the cylinder that drives the welding head to move, the fixed plate 23 can be fixedly connected to the welding frame 1 or the slider, and the two screw nut mechanisms are superimposed and arranged, and their movement directions are perpendicular to each other, so that the welding head has two degrees of freedom in two directions.

[0042] Further optimizing scheme, the bottom of the feeding frame 11 is provided with a starting pedal 18. The starting pedal 18 is used to control the operation of the double-station rotary mechanism 10.

[0043] It should be clear that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of simplicity, a detailed description of the known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention.

[0044] In the present invention, features described and / or illustrated for one embodiment may be used in the same manner or in a similar manner in one or more other embodiments, and / or combined with features of other embodiments or replace features of other embodiments.

[0045] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the embodiments of the utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A double-head turntable spot welding machine, characterized in that: include: A welding frame (1), wherein a first upper welding head (6) and a second upper welding head (7) are arranged side by side at the top of the welding frame (1), and a first lower welding head (4) and a second lower welding head (5) are arranged side by side at the bottom of the welding frame (1); a double-station rotating mechanism (10) is provided on one side of the welding frame (1), and the double-station rotating mechanism (10) has a first position and a second position, and the double-station rotating mechanism (10) is configured such that when it is in the first position, the part to be welded is located inside the welding frame (1), and when it is in the second position, the part to be welded is located outside the welding frame (1).

2. The double-head rotary disc spot welding machine according to claim 1, characterized in that: The double-station rotary mechanism (10) comprises a loading frame (11), the loading frame (11) being arranged on one side of the welding frame (1), the loading frame (11) being provided with a rotating assembly and an ejecting assembly, the rotating assembly being used to switch the part to be welded between a first position and a second position, and the ejecting assembly being used to unload the welded part.

3. The double-head rotary disc spot welding machine according to claim 2, characterized in that: The rotating assembly comprises a turntable (15), the turntable (15) being rotatably connected to the top of the loading frame (11), the turntable (15) being provided with a clearance opening (27), at least two positioning pins (28) being fixedly connected to the top of the turntable (15), the positioning pins (28) being located on both sides of the clearance opening (27), and the turntable (15) being driven by a power assembly.

4. The double-head rotary disc spot welding machine according to claim 3, characterized in that: The power assembly comprises a first support platform (12), a first motor (13) and a reducer (14); the first support platform (12) is fixedly connected to the loading frame (11); the reducer (14) is fixedly connected to the first support platform (12); and the reducer (14) drives the turntable (15) to rotate via the reducer (14).

5. The double-head rotary disc spot welding machine according to claim 3, characterized in that: A connecting rod (16) is fixedly connected to the loading frame (11), and a rotating wheel (17) is rotatably connected to the top of the connecting rod (16), and the outer side wall of the rotating wheel (17) is in contact with the bottom of the rotating disk (15).

6. The double-head rotary disc spot welding machine according to claim 2, characterized in that: The ejection assembly comprises a second support platform (19), the second support platform (19) is fixedly connected to the loading frame (11), a cylinder is fixedly connected to the top of the second support platform (19), a push plate (21) is fixedly connected to the movable end of the cylinder, and a plurality of push rods (22) are fixedly connected above the push plate (21), and the push rods (22) are used to lift the welded parts.

7. The double-head rotary disc spot welding machine according to claim 6, characterized in that: The first upper welding head (6) and the second upper welding head (7) are respectively connected to a cylinder, and the cylinders are sequentially connected to an upper welding head Y-axis walking mechanism (3) and an upper welding head X-axis walking mechanism (2), and the upper welding head X-axis walking mechanism (2) is arranged on the welding frame (1); the first lower welding head (4) and the second lower welding head (5) are respectively connected to a cylinder, and the cylinders are sequentially connected to a lower welding head Y-axis walking mechanism (9) and a lower welding head X-axis walking mechanism (8), and the lower welding head X-axis walking mechanism (8) is arranged on the welding frame (1).

8. The double-head rotary disc spot welding machine according to claim 7, characterized in that: The upper welding head Y-axis walking mechanism (3), the upper welding head X-axis walking mechanism (2), the lower welding head Y-axis walking mechanism (9) and the lower welding head X-axis walking mechanism (8) are any one of a screw-nut mechanism, a crank-connecting rod mechanism and a gear rack mechanism.

9. The double-head rotary disc spot welding machine according to claim 8, characterized in that: The lead screw nut mechanism comprises a fixing plate (23), a second motor (24) is fixedly connected to the fixing plate (23), an output shaft of the second motor (24) is fixedly connected to a lead screw (25), and the lead screw (25) is threadedly connected to a lead screw nut (26).

10. The double-head rotary disc spot welding machine according to claim 2, characterized in that: A starting pedal (18) is provided at the bottom of the loading frame (11).

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