Single-head rotating disc type spot welding machine

Abstract

The utility model provides a single-head rotating disc type spot welding machine which comprises a welding machine frame, an upper welding head mechanism is arranged on the top of the welding machine frame, a double-station rotating mechanism is arranged in the middle of the welding machine frame, a lower welding head mechanism is arranged at the bottom of the welding machine frame, and the lower welding head mechanism is configured to move transversely and longitudinally along the horizontal plane and can move close to the upper welding head mechanism. A to-be-welded part can be placed on the double-station swing mechanism, the double-station swing mechanism transfers the to-be-welded part to a welding position, namely, the position between the upper welding head mechanism and the lower welding head mechanism, the upper welding head mechanism and the lower welding head mechanism conduct spot welding on the to-be-welded position at the same time, and after welding is completed, the to-be-welded part can be placed on the double-station swing mechanism. The double-station swing mechanism transfers parts to the outer side of the welding rack, the lower welding head mechanism is different from an existing spot welding machine and can move up and down relative to the upper welding head mechanism, and after the lower welding head mechanism is abraded and shortened or a welded product is remodeled, the position of the lower welding head mechanism can be conveniently adjusted, and the whole lower welding head mechanism does not need to be replaced.

Description

Technical Field

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

[0002] Spot welding refers to a welding method that uses a cylindrical electrode to form a weld between the contact surfaces of two overlapping workpieces. During spot welding, pressure is first applied to make the workpieces in close contact, and then the current is turned on. The contact between the workpieces melts under the action of resistance heat, and a weld is formed after cooling. Spot welding is mainly used for welding of thin plate components and stampings with a thickness of less than 4mm, and is particularly suitable for welding automobile bodies, carriages, and aircraft fuselages. The side net of the dishwasher basket is welded by a spot welder. The existing spot welder's lower electrode is an integrated structure with the welding machine. During the welding process, if any position of the lower electrode is worn, the entire electrode must be removed and processed to a relatively horizontal plane, and then reinstalled on the welding machine. In addition, the entire lower electrode needs to be replaced when changing the model, and the welding position needs to be re-aligned after the model change, which makes debugging difficult. Utility Model Content

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

[0004] The utility model provides a single-head turntable spot welding machine, comprising a welding frame, an upper welding head mechanism is arranged on the top of the welding frame, a double-station rotary mechanism is arranged in the middle of the welding frame, the double-station rotary mechanism is used for loading parts to be welded and unloading welded parts, a lower welding head mechanism is arranged at the bottom of the welding frame, and the lower welding head mechanism is configured to be able to move horizontally and vertically along a horizontal plane and can move close to the upper welding head mechanism.

[0005] Preferably, the lower welding head mechanism is connected to the welding frame via a lower welding head X-axis traveling mechanism and a lower welding head Y-axis traveling mechanism.

[0006] Preferably, the lower welding head X-axis walking mechanism and the lower welding head Y-axis walking mechanism are connected to each other, and the lower welding head X-axis walking mechanism and / or the lower welding head Y-axis walking mechanism are any one of a screw nut mechanism, a synchronous belt mechanism, an electric push rod mechanism and a gear rack mechanism.

[0007] Preferably, the lower welding head mechanism includes a lower welding head, a lower welding head support and a cylinder, and the lower welding head is electrically connected to the power supply mechanism through a conductive copper strip; wherein the lower welding head support is fixedly connected to the lower welding head X-axis walking mechanism or the lower welding head Y-axis walking mechanism, and the lower welding head is movably connected to the lower welding head support through the cylinder.

[0008] Preferably, the upper welding head mechanism is configured to be able to move laterally and longitudinally along a horizontal plane and to move close to the lower welding head mechanism.

[0009] Preferably, the upper welding head mechanism is connected to the welding frame via an upper welding head X-axis walking mechanism and an upper welding head Y-axis walking mechanism.

[0010] Preferably, the upper welding head X-axis walking mechanism and the upper welding head Y-axis walking mechanism are connected to each other, and the upper welding head X-axis walking mechanism and / or the upper welding head Y-axis walking mechanism are any one of a screw nut mechanism, a synchronous belt mechanism, an electric push rod mechanism and a gear rack mechanism.

[0011] Preferably, the upper welding head mechanism includes an upper welding head, a cylinder and an upper welding head support, and the upper welding head is electrically connected to the power supply mechanism through a conductive copper strip; wherein the upper welding head support is fixedly connected to the upper welding head X-axis walking mechanism and / or the upper welding head Y-axis walking mechanism, and the upper welding head is movably connected to the upper welding head support through the cylinder.

[0012] Preferably, the double-station rotary mechanism includes a loading frame, a turntable and an ejection mechanism, the loading frame is arranged on one side of the welding frame, the turntable is arranged horizontally, the turntable is rotatably connected to the loading frame through a motor, a clearance opening is opened on the turntable, two positioning pins are fixedly connected to the turntable, the two positioning pins are arranged on both sides of the clearance opening, and the ejection mechanism is used to eject the welded parts at the clearance opening.

[0013] Preferably, the ejection mechanism comprises a support platform fixedly connected to the loading frame, a cylinder is fixedly connected to the support platform, a push plate is fixedly connected to the movable end of the cylinder, and the push plate corresponds to the position of the yielding port.

[0014] The utility model discloses a single-head turntable spot welding machine, which can place the parts to be welded on a double-station rotating mechanism, and the double-station rotating mechanism transfers the parts to be welded to the welding position, that is, between the upper welding head mechanism and the lower welding head mechanism, and the upper welding head mechanism and the lower welding head mechanism simultaneously perform spot welding on the positions to be welded, and after welding is completed, the double-station rotating mechanism transfers the parts to the outside of the welding frame, and the lower welding head mechanism is different from the existing spot welding machine, and the lower welding head mechanism can move up and down relative to the upper welding head mechanism, and when the lower welding head mechanism is worn out or the welding product is changed, the position of the lower welding head mechanism can be conveniently adjusted without replacing the entire lower welding head mechanism, which is very convenient and worthy of promotion.

[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 It is an axonometric view of a single-head turntable spot welding machine in one embodiment of the utility model.

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

[0020] Figure 3 It is an axonometric view of a double-station rotary mechanism in one embodiment of the utility model.

[0021] Figure 4 It is a left view of a double-station rotary mechanism in one embodiment of the utility model.

[0022] Figure 5 It is an axonometric view of the upper welding head mechanism in one embodiment of the utility model.

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

[0024] Figure numerals: 1. welding frame; 2. X-axis walking mechanism of upper welding head; 3. Y-axis walking mechanism of upper welding head; 4. conductive copper strip; 5. upper welding head mechanism; 51. upper welding head; 52. cylinder; 53. upper welding head support; 6. X-axis walking mechanism of lower welding head; 7. Y-axis walking mechanism of lower welding head; 8. lower welding head mechanism; 81. lower welding head; 82. lower welding head support; 9. double-station rotating mechanism; 91. loading frame; 92. turntable; 93. positioning pin; 94. clearance port; 95. support table; 96. push plate. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] The embodiment of the utility model provides a single-head turntable spot welding machine, including a welding frame 1, an upper welding head mechanism 5 is arranged on the top of the welding frame 1, a double-station rotating mechanism 9 is arranged in the middle of the welding frame 1, the double-station rotating mechanism 9 is used for loading parts to be welded and unloading welded parts, and a lower welding head mechanism 8 is arranged at the bottom of the welding frame 1. The lower welding head mechanism 8 is configured to be able to move horizontally and vertically along a horizontal plane and can move close to the upper welding head mechanism 5.

[0031] Reference Figure 1 Axonometric diagram and Figure 2 The left view of the single-head turntable spot welding machine in one embodiment of the utility model, the parts to be welded are placed on the double-station rotary mechanism 9, the double-station rotary mechanism 9 transfers the parts to be welded to the welding position, that is, between the upper welding head mechanism 5 and the lower welding head mechanism 8, the upper welding head mechanism 5 and the lower welding head mechanism 8 simultaneously perform spot welding on the welding position, after welding, the double-station rotary mechanism 9 transfers the parts to the outside of the welding frame 1, the lower welding head mechanism 8 is different from the existing spot welding machine, the lower welding head mechanism 8 can move up and down relative to the upper welding head mechanism 5, when the lower welding head mechanism 8 is worn and shortened or the welding product is changed, the position of the lower welding head mechanism 8 can be conveniently adjusted, there is no need to replace the entire lower welding head mechanism 8, it can be directly ground on the welding machine, reducing electrode consumables, reducing electrode costs and production costs, reducing changeover time, reducing manual labor intensity, improving production efficiency, and improving product quality, which is worthy of promotion.

[0032] Further optimizing the scheme, the lower welding head mechanism 8 is connected to the welding frame 1 through the lower welding head X-axis walking mechanism 6 and the lower welding head Y-axis walking mechanism 7. The lower welding head X-axis walking mechanism 6 and the lower welding head Y-axis walking mechanism 7 respectively make the lower welding head mechanism 8 perform linear motion in the X and Y directions, which facilitates the position movement of the lower welding head mechanism 8 and improves the welding efficiency.

[0033] Further optimization scheme, the lower welding head X-axis walking mechanism 6 and the lower welding head Y-axis walking mechanism 7 are connected to each other, and the lower welding head X-axis walking mechanism 6 and / or the lower welding head Y-axis walking mechanism 7 are any one of a screw nut mechanism, a synchronous belt mechanism, an electric push rod mechanism and a gear rack mechanism. The lower welding head X-axis walking mechanism 6 and the lower welding head Y-axis walking mechanism 7 can both use a screw nut mechanism, which has the advantages of small friction resistance torque, high transmission efficiency (92% to 98%), high precision, good system stiffness, reversibility of movement, and long service life.

[0034] Further optimization scheme, the lower welding head mechanism 8 includes a lower welding head 81, a lower welding head support 82 and a cylinder 52, the lower welding head 81 is electrically connected to the power supply mechanism through the conductive copper strip 4, the power supply mechanism is the prior art and will not be described here; wherein, the lower welding head support 82 is fixedly connected to the lower welding head X-axis walking mechanism 6 or the lower welding head Y-axis walking mechanism 7, and the lower welding head 81 is movably connected to the lower welding head support 82 through the cylinder 52. Figure 6 A schematic structural diagram of the lower welding head mechanism in one embodiment of the utility model, the cylinder 52 is used to drive the lower welding head 81 to approach or move away from the parts. When the lower welding head 81 is worn, the wear can be compensated by simply extending the cylinder 52, without removing the lower welding head 81, thereby reducing maintenance operations.

[0035] In a further optimized solution, the upper welding head mechanism 5 is configured to be able to move laterally and longitudinally along a horizontal plane and to move close to the lower welding head mechanism 8. Similarly, the upper welding head mechanism 5 can move synchronously with the lower welding head mechanism 8.

[0036] Further optimizing the scheme, the upper welding head mechanism 5 is connected to the welding frame 1 through the upper welding head X-axis walking mechanism 2 and the upper welding head Y-axis walking mechanism 3. The upper welding head X-axis walking mechanism 2 and the upper welding head Y-axis walking mechanism 3 can make the upper welding head mechanism 5 move in the X and Y directions.

[0037] Further optimization scheme, the upper welding head X-axis walking mechanism 2 and the upper welding head Y-axis walking mechanism 3 are connected to each other, and the upper welding head X-axis walking mechanism 2 and / or the upper welding head Y-axis walking mechanism 3 are any one of a screw nut mechanism, a synchronous belt mechanism, an electric push rod mechanism and a gear rack mechanism. The upper welding head X-axis walking mechanism 2 and the upper welding head Y-axis walking mechanism 3 can both use a screw nut mechanism, which has the advantages of small friction resistance torque, high transmission efficiency (92% to 98%), high precision, good system stiffness, reversibility of movement, and long service life.

[0038] Further optimizing the scheme, the upper welding head mechanism 5 includes an upper welding head 51, a cylinder 52 and an upper welding head support 53, and the upper welding head 51 is electrically connected to the power supply mechanism through the conductive copper belt 4; wherein the upper welding head support 53 is fixedly connected to the upper welding head X-axis walking mechanism 2 and / or the upper welding head Y-axis walking mechanism 3, and the upper welding head 51 is movably connected to the upper welding head support 53 through the cylinder 52. The cylinder 52 drives the upper welding head 51 to move up and down to complete the spot welding operation.

[0039] Further optimization scheme, the double-station rotary mechanism 9 includes a feeding frame 91, a turntable 92 and an ejection mechanism. The feeding frame 91 is arranged on one side of the welding frame 1, and the turntable 92 is arranged horizontally. The turntable 92 is rotatably connected to the feeding frame 91 through a motor. A clearance opening 94 is opened on the turntable 92. Two positioning pins 93 are fixedly connected to the turntable 92. The two positioning pins 93 are arranged on both sides of the clearance opening 94. The ejection mechanism is used to eject the welded parts at the clearance opening 94. Figure 3 Axonometric diagram and Figure 4 The left view of the double-station rotary mechanism in one embodiment of the utility model shows that the operator places the parts to be welded on the two positioning pins 93. After welding is completed, the ejection mechanism extends to eject the parts through the clearance opening 94 to complete the unloading of the parts.

[0040] Further optimizing the scheme, the ejection mechanism includes a support platform 95 fixedly connected to the feeding frame 91, a cylinder 52 fixedly connected to the support platform 95, a push plate 96 fixedly connected to the movable end of the cylinder 52, and the push plate 96 corresponds to the position of the clearance opening 94. When the cylinder 52 is extended, the cylinder 52 drives the push plate 96 to eject the parts above the clearance opening 94, which is very convenient without the operator manually removing the parts.

[0041] 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.

[0042] 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.

[0043] 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 single-head turntable spot welding machine, characterized in that: The invention comprises a welding frame (1), wherein an upper welding head mechanism (5) is arranged at the top of the welding frame (1), a double-station rotary mechanism (9) is arranged in the middle of the welding frame (1), and the double-station rotary mechanism (9) is used for loading parts to be welded and unloading welded parts, and a lower welding head mechanism (8) is arranged at the bottom of the welding frame (1), and the lower welding head mechanism (8) is configured to be able to move horizontally and vertically along a horizontal plane and to move close to the upper welding head mechanism (5).

2. The single-head rotary disc spot welding machine according to claim 1, characterized in that: The lower welding head mechanism (8) is connected to the welding frame (1) via a lower welding head X-axis walking mechanism (6) and a lower welding head Y-axis walking mechanism (7).

3. The single-head rotary disc spot welding machine according to claim 2, characterized in that: The lower welding head X-axis walking mechanism (6) and the lower welding head Y-axis walking mechanism (7) are connected to each other, and the lower welding head X-axis walking mechanism (6) and / or the lower welding head Y-axis walking mechanism (7) are any one of a lead screw nut mechanism, a synchronous belt mechanism, an electric push rod mechanism and a gear rack mechanism.

4. The single-head rotary disc spot welding machine according to claim 2, characterized in that: The lower welding head mechanism (8) comprises a lower welding head (81), a lower welding head support (82) and a cylinder (52), wherein the lower welding head (81) is electrically connected to a power supply mechanism via a conductive copper strip (4); wherein the lower welding head support (82) is fixedly connected to the lower welding head X-axis walking mechanism (6) or the lower welding head Y-axis walking mechanism (7), and the lower welding head (81) is movably connected to the lower welding head support (82) via the cylinder (52).

5. The single-head rotary disc spot welding machine according to claim 1, characterized in that: The upper welding head mechanism (5) is configured to be able to move laterally and longitudinally along a horizontal plane and to be able to move close to the lower welding head mechanism (8).

6. The single-head rotary disc spot welding machine according to claim 5, characterized in that: The upper welding head mechanism (5) is connected to the welding frame (1) via an upper welding head X-axis walking mechanism (2) and an upper welding head Y-axis walking mechanism (3).

7. The single-head rotary disc spot welding machine according to claim 6, characterized in that: The upper welding head X-axis walking mechanism (2) and the upper welding head Y-axis walking mechanism (3) are connected to each other, and the upper welding head X-axis walking mechanism (2) and / or the upper welding head Y-axis walking mechanism (3) are any one of a lead screw nut mechanism, a synchronous belt mechanism, an electric push rod mechanism and a gear rack mechanism.

8. The single-head rotary disc spot welding machine according to claim 6, characterized in that: The upper welding head mechanism (5) comprises an upper welding head (51), a cylinder (52) and an upper welding head support (53); the upper welding head (51) is electrically connected to a power supply mechanism via a conductive copper strip (4); wherein the upper welding head support (53) is fixedly connected to the upper welding head X-axis walking mechanism (2) and / or the upper welding head Y-axis walking mechanism (3); and the upper welding head (51) is movably connected to the upper welding head support (53) via the cylinder (52).

9. The single-head rotary disc spot welding machine according to claim 1, characterized in that: The double-station rotary mechanism (9) comprises a loading frame (91), a rotating disk (92) and an ejection mechanism, wherein the loading frame (91) is arranged on one side of the welding frame (1), the rotating disk (92) is arranged horizontally, the rotating disk (92) is rotatably connected to the loading frame (91) via a motor, a clearance opening (94) is provided on the rotating disk (92), two positioning pins (93) are fixedly connected to the rotating disk (92), and the two positioning pins (93) are arranged on both sides of the clearance opening (94), and the ejection mechanism is used to eject the welded parts at the clearance opening (94).

10. The single-head rotary disc spot welding machine according to claim 9, characterized in that: The ejection mechanism comprises a support platform (95) fixedly connected to the loading frame (91), a cylinder (52) being fixedly connected to the support platform (95), a push plate (96) being fixedly connected to the movable end of the cylinder (52), and the push plate (96) corresponding to the position of the clearance opening (94).

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