Bridge partition plate spot welding machine

Abstract

The utility model discloses a bridge partition plate spot welding machine which comprises a machine body, a power cylinder is arranged on the upper portion of the machine body in the height direction, a first electrode tip is fixedly arranged at the free end of the power cylinder, a workbench is fixedly arranged on the lower portion of the machine body, and a second electrode tip is fixedly arranged on the workbench, a bearing frame used for bearing a workpiece is fixedly arranged on the workbench, and the upper end face of the bearing frame is flush with or lower than the second electrode tip. According to the utility model, large workpieces, especially long workpieces, are stably supported, the workpieces are prevented from falling off from the machine body, the workpieces are more convenient to convey, and the device is suitable for welding the large and long workpieces, especially for welding bridge partition plates.

Description

Technical Field

[0001] The utility model relates to a spot welding machine, in particular to a bridge partition spot welding machine. Background Art

[0002] Welding is currently a widely used connection method between metal materials. Spot welding machines are important equipment in welding processes and are widely used in aerospace, energy, electronics, automobile and other industries. Spot welding machines generally include a fuselage, a power cylinder vertically arranged on the upper part of the fuselage, an electrode strip at the lower end of the power cylinder, a workbench at the lower part of the fuselage, and an electrode strip on the workbench. Each electrode strip is provided with an electrode head, and the electrode strips connecting the two electrode heads are respectively connected to the positive and negative poles of the power supply. The above-mentioned spot welding machines are generally used for positioning welding when connecting two thin plates, or positioning welding of the edges of thin plates bent into cylinders. During operation, the two thin plates to be welded together are placed or bent and stacked between the two electrode heads to activate the power cylinder. The two electrode heads squeeze the thin plates together, and the thin plates are melted and welded after the surface is conductive in the middle.

[0003] Since general welding requires multiple positioning welding points to ensure the structural stability of the entire workpiece, the use of the above-mentioned spot welding machine requires multiple spot welding, which is inefficient. The invention patent application with publication number CN104646813A discloses a spot welding machine, in which multiple electrode heads are provided on the electrode strip of the fuselage, and multiple welding points can be welded at one time. However, this spot welding machine is often used to weld large workpieces. Taking the bridge as an example, when welding the bridge partition, if the bridge is only placed on the fuselage through a row of electrode heads below, for the long structure of the bridge, there is a lack of stable support, and the workpiece is easy to fall from the fuselage, affecting production. Utility Model Content

[0004] In order to solve the above deficiencies in the prior art, the utility model aims to provide a bridge partition spot welding machine to achieve the purpose of stably supporting the workpiece.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a bridge partition spot welding machine, including a fuselage, a power cylinder is arranged on the upper part of the fuselage along the height direction, a first electrode head is fixedly provided at the free end of the power cylinder, a workbench is fixedly provided at the lower part of the fuselage, a second electrode head arranged in pair with the first electrode head is fixedly provided on the workbench, a supporting frame for supporting the workpiece is fixedly provided on the workbench, and the upper end surface of the supporting frame is flush with or lower than the second electrode head.

[0006] As a limitation of the present utility model: a plurality of first electrode heads and second electrode heads are arranged in a row, the length direction of the support bracket is arranged along the arrangement direction of the first electrode heads and the second electrode heads, and the support bracket is arranged on both sides of the arrangement direction of the first electrode heads and the second electrode heads.

[0007] As a limitation of the utility model: the support bracket includes a rectangular frame surrounding the second electrode head, and a plurality of rotatable conveying rollers are arranged in the frame along the length direction of the support bracket. The second electrode head is arranged in the gap between the plurality of conveying rollers, and the upper end surface of the conveying roller is flush with or lower than the second electrode head.

[0008] As a limitation of the present invention: the first electrode head is rod-shaped along the height direction, and a cooling structure is coated on the first electrode head.

[0009] As a limitation of the utility model: a first electrode strip connected to a power source is fixedly disposed on the upper part of the fuselage, the first electrode head is conductively connected to the first electrode strip, a second electrode strip connected to the power source is fixedly disposed on the lower part of the second electrode head, the second electrode head is conductively connected to the second electrode strip.

[0010] As a limitation of the present invention: the first electrode strip and the first electrode head are conductively connected via an arc-shaped multi-layer structure with two ends fixedly connected.

[0011] As a limitation of the utility model: the arc-shaped multi-layer structure includes a plurality of copper strips, the two ends of the plurality of copper strips are fixedly connected, and the middle part forms a multi-layer structure with a gradually changing arc along the same direction.

[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0013] The utility model has a support frame on the machine body, which plays a role of stable support for large workpieces, especially long workpieces, and prevents the workpieces from falling from the machine body. A rotatable conveying roller is arranged on the support frame, which converts the sliding friction of the workpiece on the support frame into rolling friction, reduces the resistance, and makes the conveying of the workpiece more convenient; the multiple settings of the first electrode head and its rod-shaped structure are also more suitable for the welding of bridge frame partitions.

[0014] In summary, the utility model plays a role of stable support for large workpieces, especially long workpieces, avoids the workpieces from falling from the machine body, and makes the transportation of workpieces more convenient. It is suitable for the welding of large and long workpieces, especially for the welding of bridge partitions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Figure 1 The three-dimensional structure of the embodiment of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The three-dimensional structure of the embodiment of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 It is a schematic diagram of the use of an embodiment of the utility model.

[0019] In the figure: 1-workbench, 2-frame, 3-power cylinder, 4-first electrode head, 5-cooling structure, 6-first electrode strip, 7-arc multilayer structure, 8-transformer, 9-first conductive strip, 10-second electrode strip, 11-second electrode head, 12-second conductive strip, 13-frame, 14-conveying roller, 15-control panel, 16-bridge, 17-partition. DETAILED DESCRIPTION

[0020] The preferred embodiment of the utility model is described below in conjunction with the accompanying drawings. It should be understood that the bridge partition spot welding machine described here is a preferred embodiment, which is only used to illustrate and explain the utility model and does not constitute a limitation of the utility model.

[0021] The directional terms or positional relationships such as "up", "down", "left" and "right" described in the present invention are based on the directional relationships in the drawings of the present invention specification and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the content protected by the present invention.

[0022] Example Bridge partition spot welding machine

[0023] In this embodiment, Figure 1 to Figure 3 As shown, a bridge partition spot welding machine includes a fuselage, a power cylinder 3 is arranged on the upper part of the fuselage along the height direction, a first electrode head 4 is fixedly provided at the free end of the power cylinder 3, a workbench 1 is fixedly provided at the lower part of the fuselage, a second electrode head 11 arranged in pair with the first electrode head 4 is fixedly provided on the workbench 1, and a supporting frame for supporting a workpiece is also fixedly provided on the workbench 1, and the upper end surface of the supporting frame is flush with or lower than the second electrode head 11.

[0024] Specifically, the fuselage includes a lower workbench 1 and an upper frame 2. The frame 2 is fixed on the workbench 1 in the height direction. Six power cylinders 3 are arranged in a row, all of which are fixed on the frame 2 in the height direction with the free end facing downward. The power cylinder 3 in this embodiment is a cylinder, and a gas storage tank connected to the cylinder is arranged on the frame 2. The power cylinder 3 can also be other components capable of reciprocating motion, such as an oil cylinder. A first electrode head 4 is fixed at the free end of each power cylinder 3. The first electrode head 4 is rod-shaped in the height direction and has a pointed tip at the lower end, which can facilitate spot welding in a relatively narrow workpiece. The first electrode head 4 is coated with a cooling structure 5, which includes a cooling channel surrounding the main part of the first electrode head 4, and also includes a liquid inlet and a liquid outlet arranged above the cooling channel and connected to the cooling channel. When working, the coolant (not shown in the figure) enters from the liquid inlet and is discharged from the liquid outlet after heat exchange with the first electrode head 4.

[0025] Since six first electrode heads 4 are arranged in a row, a first electrode strip 6 is fixedly arranged on the frame 2 along the arrangement direction of the first electrode heads 4, and the first electrode strip 6 is conductively connected to the first electrode head 4 through an arc-shaped multilayer structure 7 with both ends fixedly connected. The arc-shaped multilayer structure 7 includes a plurality of copper strips, the two ends of which are fixedly connected, and the middle part is stacked to form a multilayer structure with a gradual arc in the same direction. Such an arrangement can accommodate the reciprocating movement of the first electrode strip 6 in the up and down directions while ensuring conductivity. Two transformers 8 are fixedly arranged on the body, and one of the electrodes of the two transformers 8 is conductively connected to the first electrode strip 6 through a first conductive strip 9. The current passes through the first conductive strip 9 and the first electrode strip 6 from the transformer 8 in sequence, and then reaches the first electrode head 4.

[0026] The machine body also includes a lower workbench 1, on which a second electrode strip 10 is fixedly arranged along the arrangement direction of the first electrode head 4. The second electrode head 11 is conductively fixedly arranged on the second electrode strip 10, and there are six second electrode heads 11 that match the first electrode head 4. The second electrode head 11 is a cubic structure. The other electrodes of the two transformers 8 are conductively connected to the second electrode strip 10 through the second conductive strip 12. The current passes through the second conductive strip 12 and the second electrode strip 10 from the transformer 8 in sequence, and then reaches the second electrode head 11. When the workpiece is placed on the second electrode head 11, and the free end of the power cylinder 3 moves downward to drive the first electrode head 4 to contact the workpiece, the first electrode head 4 is conductively connected to the second electrode head 11, completing a spot welding action.

[0027] In order to improve the stability of the workpiece, a support frame for supporting the workpiece is also fixed on the workbench 1. The length direction of the support frame is arranged along the arrangement direction of the first electrode head 4 and the second electrode head 11, and the support frame is arranged on both sides of the arrangement direction of the first electrode head 4 and the second electrode head 11. Specifically, the support frame includes a rectangular frame 13 surrounding the second electrode head 11, and the long side of the frame 13 is arranged along the arrangement direction of the first electrode head 4 and the second electrode head 11. A plurality of rotatable conveying rollers 14 are arranged in the frame 13 along the length direction of the support frame, and the length direction of the conveying rollers 14 is arranged perpendicular to the arrangement direction of the first electrode head 4 and the second electrode head 11. Six second electrode heads 11 are arranged in the gaps between the plurality of conveying rollers 14, and the upper end surface of the conveying roller 14 is flush with or slightly lower than the second electrode head 11, so as to ensure that the workpiece is electrically connected to the second electrode head when placed on the support frame.

[0028] A control panel 15 is provided on one side of the fuselage, and a signal output terminal of the control panel 15 is connected to a signal input terminal of the power cylinder 3 for communication. Figure 3 As shown, the bridge 16 is slid onto the workbench 1 through the conveying roller 14, and the extension direction of the bridge 16 is parallel to the arrangement direction of the multiple first electrode heads 4. The L-shaped partition 17 is placed in the center of the bridge 16, and the tip of the first electrode head 4 is aligned with the bottom surface of the L-shaped partition 17. The power cylinder 3 is controlled to move the first electrode head 4 downward until it contacts the partition 17. Since the bridge 16 and the second electrode head 11 are in contact at this time, the first electrode head 4 and the second electrode head 11 are conductively connected. Then the power cylinder 3 is activated to return the first electrode head 4 to complete a spot welding action. It should be noted that the six power cylinders 3 in this embodiment act simultaneously, and the welding of multiple points of the partition 17 can be completed at one time. After the welding is completed, the bridge 16 is directly pushed, and the bridge 16 can be slid down under the action of the conveying roller 14, which greatly improves the production efficiency.

Claims

1. A bridge partition spot welding machine, comprising a body, a power cylinder is arranged on the upper part of the body along the height direction, a first electrode head is fixedly arranged at the free end of the power cylinder, a workbench is fixedly arranged at the lower part of the body, and a second electrode head arranged in pair with the first electrode head is fixedly arranged on the workbench, Features: A support frame for supporting the workpiece is fixedly arranged on the workbench, and the upper end surface of the support frame is flush with or lower than the second electrode head.

2. The bridge partition spot welding machine according to claim 1, Features: A plurality of first electrode heads and second electrode heads are arranged in a row, the length direction of the support bracket is arranged along the arrangement direction of the first electrode heads and the second electrode heads, and the support bracket is arranged on both sides of the arrangement direction of the first electrode heads and the second electrode heads.

3. The bridge partition spot welding machine according to claim 2, Features: The support bracket includes a rectangular frame surrounding the second electrode head, in which a plurality of rotatable conveying rollers are arranged along the length direction of the support bracket. The second electrode head is arranged in the gap between the plurality of conveying rollers, and the upper end surface of the conveying roller is flush with or lower than the second electrode head.

4. The bridge partition spot welding machine according to claim 1, Features: The first electrode head is in a rod shape along the height direction, and a cooling structure is coated on the first electrode head.

5. The bridge partition spot welding machine according to any one of claims 1 to 4, Features: A first electrode strip connected to a power source is fixedly disposed on the upper portion of the fuselage, the first electrode head is conductively connected to the first electrode strip, a second electrode strip connected to a power source is fixedly disposed on the lower portion of the second electrode head, the second electrode head is conductively connected to the second electrode strip.

6. The bridge partition spot welding machine according to claim 5, Features: The first electrode strip and the first electrode head are conductively connected via an arc-shaped multilayer structure with two ends fixedly connected.

7. The bridge partition spot welding machine according to claim 6, Features: The arc-shaped multi-layer structure comprises a plurality of copper strips, the two ends of which are fixedly connected, and the middle part forms a multi-layer structure with a gradually changing arc in the same direction.

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