CN116079210A - A water heater air chamber resistance welding equipment - Google Patents

Abstract

The invention relates to the technical field of resistance welding, in particular to resistance welding equipment for an air chamber of a water heater, which comprises a main body, a first electrode assembly and a second electrode assembly, wherein the first electrode assembly and the second electrode assembly are arranged at the upper part of the main body, a clamping assembly is also arranged at the upper part of the main body, and the clamping assembly is respectively connected with the first electrode assembly and the second electrode assembly; the first electrode assembly comprises a left outer electrode and a left inner electrode, the left outer electrode is connected to the upper part of the main body in a sliding way, and the left inner electrode is connected with the left side of the clamping assembly; the second electrode assembly comprises a right external electrode and a right internal electrode, the right internal electrode is connected to the upper part of the main body in a sliding way, and the right internal electrode is connected with the right side of the clamping assembly; the clamping assembly can drive the left inner electrode to move towards the direction close to the left outer electrode, and the clamping assembly can also drive the right inner electrode to move towards the direction close to the right outer electrode; the outer support cylinder drives the outer support block to stretch from between the left support block and the right support block, so that the left inner electrode and the right inner electrode are contacted or separated from a welding workpiece, and the welding of the workpiece is facilitated.

Description

A water heater air chamber resistance welding equipment

technical field

The invention relates to the technical field of resistance welding, in particular to a water heater air chamber resistance welding equipment.

Background technique

Resistance welding is a method that uses the resistance heating effect generated by the current flowing through the contact surface of the workpiece and the adjacent area to heat it to a molten or plastic state to form a metal bond. Taking spot welding as an example, it assembles the weldments into lap joints The joint is pressed between the conductive electrode and the welding electrode, and the base metal is melted by resistance heat to form a resistance welding method. The air chamber of the water heater is a structure that welds the shell of the water heater and the reinforcing plate together. The air chamber of the water heater It includes the shell, the reinforcement plate L and the reinforcement plate R (as shown in Figure 1), the reinforcement plate L and the reinforcement plate R are respectively welded to the two ends of the protruding part of the shell, the structure of the water heater after welding the reinforcement plate is stable, and the water heater can provide service life.

Prior art CN107627067A discloses a fully automatic multi-station component capping welding machine, which includes a frame, a four-column guiding pressure mechanism, a multi-station rotating mechanism and an automatic loading and unloading device, and a four-column guiding and pressure mechanism is arranged above the frame. The four-column guiding and pressurizing mechanism includes a pressurized cylinder, a cylinder fixing seat, a guide column, a ball guide bush and an upper table seat. The ball guide bush matched with the guide column, the upper platen seat connected to the pressurized cylinder is arranged on the lower side of the cylinder fixing seat, the upper electrode device is connected to the pressurized cylinder, and the multi-station rotating mechanism is also arranged on the frame, and the multi-station rotating The mechanism is equipped with a lower electrode device, the workpiece is placed on the multi-station rotating mechanism, and the pressurized cylinder moves downward to complete the welding.

To sum up, in the prior art, the reinforcement plate L and the reinforcement plate R are respectively welded to both ends of the protruding part of the air chamber shell of the water heater. The protruding part of the shell is moved so that the other end of the shell and the reinforcement plate R are positioned at the welding station for welding, which has a low degree of automation and relatively low work efficiency. Therefore, it is urgent to provide a water heater air chamber resistance welding Compared with the prior art, the device can weld two reinforcing plates at the same time, so as to realize the improvement of work efficiency.

Contents of the invention

In order to solve the above problems, the present invention provides a water heater air chamber resistance welding equipment.

To achieve the above object, the technical scheme of the present invention is as follows:

A water heater air chamber resistance welding equipment, comprising a main body, a first electrode assembly and a second electrode assembly, the first electrode assembly and the second electrode assembly are arranged on the upper part of the main body, and the clamp is also arranged on the upper part of the main body a clamping assembly, the clamping assembly is respectively connected to the first electrode assembly and the second electrode assembly;

The first electrode assembly includes a left outer electrode and a left inner electrode, the left outer electrode is slidably connected to the upper part of the main body, and the left inner electrode is connected to the left side of the clamping assembly;

The second electrode assembly includes a right outer electrode and a right inner electrode, the right inner electrode is slidably connected to the upper part of the main body, and the right inner electrode is connected to the right side of the clamping assembly;

The clamping assembly drives the left inner electrode to move toward the left outer electrode, and the clamping assembly drives the right inner electrode to move toward the right outer electrode.

Further, the clamping assembly includes a left support block, a right support block and an outer support block, the left support block, the right support block and the outer support block are all slidably connected to the upper part of the main body, the left support block The support block is connected to the left inner electrode, the right support block is connected to the right inner electrode, and the outer support block extends between the left support block and the right support block.

Furthermore, the clamping assembly also includes an outer support cylinder, the outer support cylinder is arranged on the upper part of the main body, the piston end of the outer support cylinder is connected to the outer support block, and the shape of the outer support block is as follows: V-shape.

Furthermore, a spring is connected between the left support block and the right support block.

Furthermore, it also includes a first pressing assembly and a second pressing assembly, the first pressing assembly and the second pressing assembly are both arranged on the upper part of the main body, the first pressing assembly and the The above-mentioned second pressing components are all used for pressing the housing.

Further, the first pressing assembly includes a left upper pressing cylinder, a left upper pressing plate, a left positioning cylinder and a left positioning plate, the upper left pressing cylinder and the left positioning cylinder are arranged on the upper part of the main body, and the left upper pressing cylinder is set as Rotary clamping cylinder, the left upper pressing cylinder drives the left upper pressing plate to rotate and move up and down at the same time, the left positioning cylinder drives the left positioning plate to move, both the left upper pressing plate and the left positioning plate abut against the housing .

Further, the second pressing assembly includes a right upper pressing cylinder, a right upper pressing plate, a right positioning cylinder and a right positioning plate, the upper right pressing cylinder and the right positioning cylinder are arranged on the upper part of the main body, and the right upper pressing cylinder is set as Rotary clamping cylinder, the upper right pressing cylinder drives the upper right pressing plate to rotate and move up and down at the same time, the right positioning cylinder drives the right positioning plate to move, both the upper right pressing plate and the right positioning plate abut against the housing .

Further, the upper wall of the main body is also provided with a material return assembly, the material return assembly includes a material return cylinder and a material return hook, the upper part of the main body is provided with the material return cylinder, and the piston end of the material return cylinder is provided with the A material-removing hook, the material-removing hook is L-shaped, and a housing is arranged between the material-removing hook and the material-removing cylinder.

Further, the first electrode assembly also includes a left pressurized cylinder, the left pressurized cylinder is arranged on the upper part of the main body, and the piston end of the left pressurized cylinder is connected to the left outer electrode; the second electrode assembly It also includes a right pressurization cylinder, the right pressurization cylinder is arranged on the upper part of the main body, and the piston end of the right pressurization cylinder is connected to the right outer electrode.

Furthermore, the main body includes a frame, two sets of welding transformers and two sets of welding controllers, the inside of the frame is provided with the welding transformers and the welding controllers, and the upper part of the frame is provided with the first electrode assembly, the second electrode assembly and the clamping assembly;

One set of welding transformers and one set of welding controllers are connected to the first electrode assembly, and another set of welding transformers and another set of welding controllers are connected to the second electrode assembly.

Compared with prior art, the beneficial effect of the present invention is:

(1) The outer support cylinder of the present invention stretches out, drives the outer support block to stretch between the left support block and the right support block, pushes the left support block and the right support block through the outer support block, and realizes that the left inner electrode and the right inner electrode move to the left and right The two sides are expanded, so that the left inner electrode contacts the side wall of the reinforcement plate L, the right inner electrode contacts the side wall of the reinforcement plate R, and the left upper pressure cylinder pushes the left outer electrode to move, so that the left outer electrode contacts the side wall of the reinforcement plate L, and is in contact with the side wall of the reinforcement plate L. The left inner electrode forms a welding circuit, and the right upper pressure cylinder pushes the right outer electrode to move, so that the right outer electrode contacts the side wall of the reinforcement plate R, and forms a welding circuit with the right inner electrode. The reinforcement plate L and the reinforcement plate R complete welding at the same time, and the two The electrode groups work independently without interfering with each other, and the welding effect will not be affected by the shunting of the shell, so the welding efficiency is high and the welding effect is good.

(2) After the reinforcement plate L and the reinforcement plate R of the present invention are welded, the outer support cylinder is retracted, and the outer support block is separated from the left support block and the right support block. Since the spring is connected between the left support block and the right support block, After the outer support block leaves between the left support block and the right support block, the left support block and the right support block will automatically move closer to the middle under the action of the spring, so that the left inner electrode and the right inner electrode leave the welding workpiece, which is convenient for the next workpiece. welding.

(3) Welding different shells and reinforcement plates L and reinforcement plates R only needs to replace the corresponding left outer electrode, left inner electrode, right inner electrode and right outer electrode, which is conducive to welding different workpieces, and the equipment operates at the same time Simple, convenient installation and debugging.

Description of drawings

Figure 1 is a schematic structural view of the water heater air chamber.

Fig. 2 is a schematic diagram of the overall structure of the present invention.

Fig. 3 is a top view of the overall structure of the present invention.

Fig. 4 is a schematic structural view of the first pressing assembly of the present invention.

Fig. 5 is a schematic structural view of the second pressing assembly of the present invention.

Fig. 6 is a schematic structural view of the clamping assembly of the present invention.

Fig. 7 is a schematic structural view of the material return assembly of the present invention.

Fig. 8 is a structural schematic view of the present invention when clamping the air chamber of the water heater.

Fig. 9 is a schematic diagram of the positional relationship between the air chamber of the water heater and the air chamber of the water heater when the air chamber of the water heater is clamped according to the present invention.

Fig. 10 is a schematic structural view of the present invention when the material is returned.

Explanation of reference signs:

1. Main body; 2. First electrode assembly; 21. Left pressurized cylinder; 22. Left outer electrode; 23. Left inner electrode; 3. Second electrode assembly; 31. Right pressurized cylinder; 32. Right outer electrode; 33. Right inner electrode; 4. Material return component; 41. Material return cylinder; 42. Material return hook; 5. First pressing component; 51. Left upper pressure cylinder; 52. Left upper pressure plate; , left positioning plate; 6, second pressing assembly; 61, upper right pressing cylinder; 62, upper right pressing plate; 63, right positioning cylinder; 64, right positioning plate; 7, clamping assembly; 71, outer support cylinder; 72, 73, right support block; 74, outer support block; 75, spring; 8, welding platform; 9, shell; 10, reinforcement plate L; 11, reinforcement plate R.

Detailed ways

The technical scheme of the present invention will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the present invention. Embodiments all belong to the protection scope of the present invention. It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal" etc. are based on the orientation or position shown in the drawings The positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

As shown in Figure 1, the air chamber of the water heater includes a shell 9, a reinforcement plate L10 and a reinforcement plate R11, the shell 9 is set as a U-shaped frame, and the two ends of the protrusion on one side of the shell 9 are respectively welded to the reinforcement plate L10 and the reinforcement plate R11.

As shown in Figure 2, the present invention provides a water heater air chamber resistance welding equipment, including a main body 1, a first electrode assembly 2, a second electrode assembly 3, a first pressing assembly 5, a second pressing assembly 6 and a clamping Component 7, the main body 1 includes a frame, two sets of welding transformers and two sets of welding controllers, two sets of welding transformers and two sets of welding controllers are arranged inside the frame, and the first electrode assembly 2 and the second electrode assembly 3 are arranged on the upper part of the frame , the first pressing assembly 5, the second pressing assembly 6 and the clamping assembly 7, the clamping assembly 7 is arranged in the middle position of the upper part of the frame, the clamping assembly 7 is extended along the width direction of the frame, the first electrode assembly 2 and the first pressing assembly 5 are located on the left side of the upper part of the frame, the second electrode assembly 3 and the second pressing assembly 6 are located on the right side of the upper part of the frame, and the first electrode assembly 2 and the second electrode assembly 3 are opposite to the clip The tightening assembly 7 is arranged symmetrically, the first pressing assembly 5 and the second pressing assembly 6 are also arranged symmetrically with respect to the clamping assembly 7, and a welding platform 8 is arranged on the upper part of the frame, and the shell 9 is placed on the upper part of the welding platform 8, and the reinforcing plate L10 It is arranged inside the first electrode assembly 2, and the reinforcing plate R11 is arranged inside the second electrode assembly 3. The first pressing assembly 5 and the second pressing assembly 6 are used to press the casing 9 on the upper part of the welding platform 8, clamp The component 7 is used to clamp the reinforcement plate L10 and the reinforcement plate R11. Under the action of the first compression component 5, the second compression component 6 and the clamping component 7, the casing 9 and the reinforcement plate L10 and the reinforcement plate R11 can be Positioning for easy welding.

As shown in Fig. 3, Fig. 4 and Fig. 5, the first electrode assembly 2 includes a left pressurized cylinder 21, a left outer electrode 22 and a left inner electrode 23, the left pressurized cylinder 21 is arranged on the upper wall of the frame, and the left pressurized cylinder The piston of 21 moves horizontally, the piston end of the left pressurized cylinder 21 is connected to the left outer electrode 22, the left inner electrode 23 is arranged on the left side of the clamping assembly 7, the reinforcing plate L10 is arranged on the left side of the left inner electrode 23, and the left outer electrode 22 Set horizontally with the left inner electrode 23; the second electrode assembly 3 includes a right pressurized cylinder 31, a right outer electrode 32 and a right inner electrode 33, the right pressurized cylinder 31 is arranged on the upper wall of the frame, and the piston of the right pressurized cylinder 31 is horizontal direction movement, the piston end of the right pressurized cylinder 31 is connected to the right outer electrode 32, the right inner electrode 33 is arranged on the right side of the clamping assembly 7, the reinforcing plate R11 is arranged on the right side of the right inner electrode 33, the right outer electrode 32 and the right inner electrode 33 Horizontally arranged; the first compression assembly 5 comprises a left upper pressure cylinder 51, a left upper pressure plate 52, a left positioning cylinder 53 and a left positioning plate 54, and the left upper pressure cylinder 51 is vertically arranged on the upper wall of the frame, and the left upper pressure cylinder 51 piston moves vertically , the left upper pressure cylinder 51 adopts a rotary clamping cylinder, and the left upper pressure cylinder 51 top is provided with a left upper pressure plate 52, and the left upper pressure cylinder 51 can drive the left upper pressure plate 52 to rotate along the vertical direction while being centered on the left upper pressure cylinder 51 upper end (rotating clockwise toward move down, and move up when rotating counterclockwise), after the upper left pressing plate 52 rotates to the upper part of the housing 9, the housing 9 can be compressed, and the left positioning cylinder 53 is also arranged on the vertical frame upper wall, and the left positioning cylinder 53 piston is horizontal Direction movement, left positioning cylinder 53 piston end connects left positioning plate 54, and left positioning cylinder 53 stretches out, drives left positioning plate 54 to move, and left positioning plate 54 stretches out and can compress housing 9; Second pressing assembly 6 comprises Right upper pressure cylinder 61, right upper pressure plate 62, right positioning cylinder 63 and right positioning plate 64, right upper pressure cylinder 61 is vertically arranged on the frame upper wall, right upper pressure cylinder 61 piston moves vertically, right upper pressure cylinder 61 adopts rotary clamping cylinder , the upper right pressure cylinder 61 piston end is provided with an upper right pressure plate 62, and the upper right pressure cylinder 61 can drive the upper right pressure plate 62 to rotate around the upper end of the upper right pressure cylinder 61 and move along the vertical direction (moving downward when rotating counterclockwise, and upward when rotating clockwise) move), after the upper right pressing plate 62 rotates to the upper part of the housing 9, the housing 9 can be compressed, the right positioning cylinder 63 is arranged on the vertical frame upper wall, the piston of the right positioning cylinder 63 moves horizontally, and the piston end of the right positioning cylinder 63 is connected The right positioning plate 64 and the right positioning cylinder 63 stretch out to drive the right positioning plate 64 to move, and the right positioning plate 64 stretches out to compress the housing 9; The left outer electrode 22, the left inner electrode 23, the right outer electrode 32, and the right inner electrode 33 that are arranged inside the second electrode assembly 3 are connected, and the two groups of welding controllers arranged inside the frame are connected with the left pressurized cylinder 21 and the left upper press cylinder respectively. 51. The left positioning cylinder 53, the right pressurizing cylinder 31, the right upper pressing cylinder 61 and the right positioning cylinder 63 are connected; the upper wall of the welding platform 8 is provided with four columns, and the lower part of the housing 9 is in contact with the upper wall of the columns, and the columns are used to support the shell Body 9.

As shown in Figure 3 and Figure 6, the clamping assembly 7 includes an outer support cylinder 71, a left support block 72, a right support block 73, an outer support block 74 and a spring 75, and the upper wall of the frame is vertically connected with the outer support cylinder 71, and the outer support Cylinder 71 is arranged on the middle position of the upper wall of the frame, and the outer support cylinder 71 extends along the width direction of the upper wall of the frame, and the piston of the outer support cylinder 71 moves in the horizontal direction, and the upper wall of the frame is also vertically connected to two supports, and the supports slide Connected to the upper wall of the frame, the two brackets are arranged symmetrically with respect to the outer support cylinder 71, two springs 75 are arranged between the two supports, the spring 75 is connected with the rear side walls of the two supports, and the left side support of the outer support cylinder 71 The right side wall of the outer support cylinder 71 is provided with a left support block 72, and the left side wall of the outer support cylinder 71 left side support is provided with a left inner electrode 23, and the left side wall of the outer support cylinder 71 right side support is provided with a right support block 73, and the outer support cylinder The right inner electrode 33 is arranged on the right side wall of the 71 right side bracket, the left support block 72 and the right support block 73 are arranged horizontally, the two supports are located at the rear side of the piston end of the outer support cylinder 71, and the piston end of the outer support cylinder 71 is connected to the outer support block 74, the outer support cylinder 71 is located between the welding table 8 and the upper wall of the frame, the outer support block 74 is located at the top of the welding table 8, and the outer support block 74 is set as V-shaped near the support end, the outer support block 74 and the left support block 72, The right support block 73 is horizontally arranged, the outer support cylinder 71 is in the retracted state, the spring 75 is in the original length, the left support block 72 and the right support block 73 are in a relatively close state, and after the outer support cylinder 71 piston ends stretch out, the outer support Block 74 can be stretched between left support block 72 and right support block 73, and spring 75 is elongated, and the support that makes outer support cylinder 71 left sides is arranged drives left inner electrode 23 to the direction of left outer electrode 22, makes left inner The electrode 23 and the left outer electrode 22 are respectively in contact with the left and right side walls of the reinforcement plate L10, and the bracket provided on the right side of the outer support cylinder 71 drives the right inner electrode 33 to move in the direction of the right outer electrode 32, so that the right inner electrode 33 and The right outer electrode 32 is in contact with the left and right side walls of the reinforcing plate R11 respectively. At this time, the right side of the left support block 72 is attached to the left side wall of the outer support block 74, and the left side of the right support block 73 is connected to the right side of the outer support block 74. The side walls are fitted together, and the outer support cylinder 71 is stretched out, so that the side wall of the reinforcement plate L10 can be in contact with the left outer electrode 22 and the left inner electrode 23, and the left outer electrode 22 and the left inner electrode 23 form a welding circuit, which is convenient for the reinforcement plate L10 The welding also makes the side wall of the reinforcing plate R11 contact with the right outer electrode 32 and the right inner electrode 33, and the right outer electrode 32 and the right inner electrode 33 form a welding circuit, which facilitates the welding of the reinforcing plate R11.

As shown in Figure 3 and Figure 7, the upper wall of the frame is also provided with a material return assembly 4, the material return assembly 4 is located in the middle of the frame, the material return assembly 4 extends along the width direction of the upper wall of the frame, and the material return assembly 4 Located between the first pressing assembly 5 and the second pressing assembly 6, the stripping assembly 4 includes a stripping cylinder 41 and a stripping hook 42, the stripping cylinder 41 is arranged vertically on the upper wall of the frame, and the stripping cylinder 41 piston is positioned horizontally Move, the piston end of the material return cylinder 41 is connected to the material return hook 42, the material return hook 42 is set as L-shaped, the vertical part of the material return hook 42 is located at the horizontal part of the material return hook 42 and is set away from the end of the material return cylinder 41, and the material return hook 42 is set vertically The upper end of the straight portion close to the side wall of the ejection cylinder 41 is provided with a chamfer, and the ejection hook 42 is placed horizontally. Before the equipment starts to work, the ejection cylinder 41 is in an extended state. The protrusions of the body 9 welded with the reinforcing plate L10 and the reinforcing plate R11 are located between the stripping cylinder 41 and the vertical portion of the stripping hook 42 .

All the cylinders mentioned above are only a kind of power source, but not limited thereto, and can also be replaced by other power sources such as electric cylinders, servo modules, racks and pinions, and the spring 75 is also only a kind of power source, also Alternative implementations may be made by other power sources.

The working principle of the resistance welding equipment for the air chamber of the water heater provided by the present invention is as follows: before the welding work starts, the left pressurized cylinder 21, the left positioning cylinder 53, the right pressurized cylinder 31, the right positioning cylinder 63 and the outer supporting cylinder 71 are all in the shrinking position. In the return state, the material return cylinder 41 is in the extended state, the upper left pressing plate 52 and the upper right pressing plate 62 are in the state extending along the length direction of the frame, and the spring 75 is in the original long state.

As shown in Fig. 8 and Fig. 9, the housing 9 is first placed on the column set on the upper wall of the welding platform 8, so that the protrusions that need to be welded to the reinforcement plate L10 and the reinforcement plate R11 are located at the vertical part and the withdrawal hook 42. Between the material cylinders 41, the reinforcing plate L10 and the reinforcing plate R11 are clamped respectively on the two ends of the protrusions to be welded on the housing 9, the reinforcing plate L10 is located between the left inner electrode 23 and the left outer electrode 22, and the reinforcing plate R11 Located between the right inner electrode 33 and the right outer electrode 32, the welding controller inside the frame starts to issue a welding command, and the left upper pressing cylinder 51 drives the left upper pressing plate 52 to rotate clockwise, and its axis moves downward, so it drives the left upper pressing plate 52 to Moving down, the upper left pressing plate 52 rotates to extend along the frame width direction. After the upper left pressing plate 52 rotates, the lower wall of the upper left pressing plate 52 abuts against the upper wall of the housing 9, the left positioning cylinder 53 stretches out, and the left positioning plate 54 approaches the housing. The direction of the body 9 moves, the front side wall of the left positioning plate 54 abuts against the side wall of the housing 9, the right upper pressure cylinder 61 drives the right upper pressure plate 62 to rotate counterclockwise, and its axis moves downward, so it drives the right upper pressure plate 62 to move downward. The upper right pressing plate 62 is rotated to extend along the frame width direction. After the upper right pressing plate 62 rotates, the lower wall of the upper right pressing plate 62 abuts against the upper wall of the housing 9, the right positioning cylinder 63 stretches out, and the right positioning plate 64 moves towards the side close to the housing 9. direction movement, the front side wall of the right positioning plate 64 abuts against the side wall of the housing 9, and the upper left pressing plate 52, the upper right pressing plate 62, the left positioning plate 54 and the right positioning plate 64 compress and position the housing 9; the outer support cylinder 71 Stretch out, the outer support cylinder 71 pushes the outer support block 74 to move to the rear side, and in the process of the outer support block 74 moving backward, the outer support block 74 stretches between the left support block 72 and the right support block 73, and the left support block 72 Moving to the left, the left internal electrode 23 also moves to the left along with the left support block 72. After the left internal electrode 23 moves to the left, it contacts the right side wall of the reinforcing plate L10. The right support block 73 moves to the right, and the right internal electrode 33 follows Moving to the right, the right inner electrode 33 contacts the left side wall of the reinforcing plate R11 after moving to the right, the left pressurized cylinder 21 stretches out, the left outer electrode 22 moves to the right, and the left outer electrode 22 contacts the left side of the reinforcing plate L10 At this time, the reinforcing plate L10 is clamped by the left outer electrode 22 and the left inner electrode 23, and the left outer electrode 22 and the left inner electrode 23 form a welding circuit, and the left outer electrode 22 and the left inner electrode 23 connect the reinforcing plate L10 and the left inner electrode 23. The shells 9 are welded together, the right pressurized cylinder 31 is stretched out, the right outer electrode 32 moves to the left and contacts the right side wall of the reinforcing plate R11, and the reinforcing plate R11 is clamped by the right outer electrode 32 and the right inner electrode 33 , the right outer electrode 32 and the right inner electrode 33 form a welding circuit, and the right outer electrode 32 and the right inner electrode 33 weld the reinforcement plate R11 and the housing 9 together, so that the reinforcement plate L10 and the reinforcement plate R11 complete welding at the same time, and strengthen The welding procedures between the plate L10 and the reinforcement plate R11 do not affect each other.

As shown in Figure 10, after the welding is completed, the left upper pressure cylinder 51 drives the left upper pressure plate 52 to rotate counterclockwise and move upwards, so that the left upper pressure plate 52 leaves the upper wall of the housing 9, and the left positioning cylinder 53 retracts to make the left positioning plate 54 leave On the side wall of the housing 9, the upper right pressing cylinder 61 drives the upper right pressing plate 62 to rotate clockwise and move upwards, so that the upper right pressing plate 62 leaves the upper wall of the housing 9, and the right positioning cylinder 63 retracts, so that the right positioning plate 64 leaves the side of the housing 9 wall, the outer support cylinder 71 retracts, driving the outer support block 74 to move away from the left support block 72 or the right support block 73, the outer support block 74 leaves the left support block 72 and the right support block 73, and under the action of the spring 75 , the left support block 72 and the right support block 73 move toward each other, so that the left inner electrode 23 leaves the side wall of the reinforcing plate L10, the right inner electrode 33 leaves the side wall of the reinforcing plate R11, and the left pressurized cylinder 21 retracts to drive the left The outer electrode 22 moves away from the left inner electrode 23, the left outer electrode 22 leaves the side wall of the reinforcement plate L10, the right pressurized cylinder 31 retracts, and drives the right outer electrode 32 to move away from the right inner electrode 33, and the right outer electrode 32 leaves the side wall of the reinforcement plate R11, and the material return cylinder 41 drives the material return hook 42 to retract. During the retraction process, the material return hook 42 hooks the shell 9 and drives the shell 9 to move a certain distance to the rear side of the frame. It is convenient for subsequent automatic or manual feeding operations.

The left outer electrode 22 and the left inner electrode 23 use one group of welding transformers and welding controllers, and the right outer electrode 32 and the right inner electrode 33 use another group of welding transformers and welding controllers. The two groups of electrodes work independently without interfering with each other. The welding effect will be affected by the shunt of the shell 9; when welding different shells, reinforcing plates L10 and reinforcing plates R11, only the corresponding left outer electrode 22, left inner electrode 23, right inner electrode 33 and right outer electrode 32 need to be replaced. , it is convenient to weld different workpieces; the equipment of this application is easy to operate, has a high degree of automation, high welding efficiency and stable welding effect.

The above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without Any deviation from the scope of the technical solution of the present invention shall be covered by the scope of the claims of the present invention.

Claims (10)

1. The electric resistance welding equipment for the air chamber of the water heater is characterized by comprising a main body, a first electrode assembly and a second electrode assembly, wherein the first electrode assembly and the second electrode assembly are arranged on the upper part of the main body, and the first electrode assembly and the second electrode assembly are also arranged on the upper part of the main body

The clamping assembly is respectively connected with the first electrode assembly and the second electrode assembly;

the first electrode assembly comprises a left outer electrode and a left inner electrode, the left outer electrode is connected to the upper part of the main body in a sliding manner, and the left inner electrode is connected with the left side of the clamping assembly;

the second electrode assembly comprises a right external electrode and a right internal electrode, the right internal electrode is connected to the upper part of the main body in a sliding way, and the right internal electrode is connected with the right side of the clamping assembly;

the clamping assembly drives the left inner electrode to move towards the direction close to the left outer electrode, and the clamping assembly drives the right inner electrode to move towards the direction close to the right outer electrode.

2. The water heater air plenum resistance welding apparatus of claim 1, wherein the clamping assembly includes a left brace, a right brace, and an outer brace, the left brace, the right brace, and the outer brace all slidingly coupled to the upper portion of the main body, the left brace coupled to the left inner electrode, the right brace coupled to the right inner electrode, and the outer brace extending between the left brace and the right brace.

3. The electric resistance welding apparatus for air chambers of water heaters according to claim 2, wherein the clamping assembly further comprises an outer support cylinder provided at the upper portion of the main body, the piston end of the outer support cylinder is connected to the outer support block, and the outer support block is formed in a V-shape.

4. A water heater air plenum resistance welding apparatus as recited in claim 3, wherein springs are connected between said left and right support blocks.

5. The water heater air chamber resistance welding apparatus of any one of claims 1-4, further comprising a first hold down assembly and a second hold down assembly, both disposed on the upper portion of the body, both for holding down the housing.

6. The electric resistance welding equipment for air chambers of water heaters according to claim 5, wherein the first pressing assembly comprises an upper left pressing cylinder, an upper left pressing plate, a left positioning cylinder and a left positioning plate, the upper left pressing cylinder and the left positioning cylinder are arranged on the upper portion of the main body, the upper left pressing cylinder is arranged to be a rotary clamping cylinder, the upper left pressing cylinder drives the upper left pressing plate to move up and down while rotating, the left positioning cylinder drives the left positioning plate to move, and the upper left pressing plate and the left positioning plate are in abutting joint with the shell.

7. The electric resistance welding equipment for air chambers of water heaters according to claim 5, wherein the second pressing assembly comprises an upper right pressing cylinder, an upper right pressing plate, a right positioning cylinder and a right positioning plate, the upper right pressing cylinder and the right positioning cylinder are arranged on the upper portion of the main body, the upper right pressing cylinder is arranged to be a rotary clamping cylinder, the upper right pressing cylinder drives the upper right pressing plate to move up and down while rotating, the right positioning cylinder drives the right positioning plate to move, and the upper right pressing plate and the right positioning plate are in abutting joint with the shell.

8. The electric resistance welding apparatus for air chamber of water heater according to any one of claims 6 or 7, wherein the upper wall of the main body is further provided with a material returning assembly including a material returning cylinder and a material returning hook, the material returning cylinder is provided at the upper portion of the main body, the material returning hook is provided at the piston end of the material returning cylinder, the material returning hook is provided in an L-shape, and a housing is provided between the material returning hook and the material returning cylinder.

9. The electric resistance welding apparatus for an air chamber of a water heater according to claim 1, wherein the first electrode assembly further comprises a left pressurizing cylinder provided at an upper portion of the main body, and a piston end of the left pressurizing cylinder is connected to the left external electrode; the second electrode assembly further comprises a right pressurizing cylinder, the right pressurizing cylinder is arranged on the upper portion of the main body, and the piston end of the right pressurizing cylinder is connected with the right external electrode.

10. The water heater air chamber resistance welding apparatus of claim 9, wherein the main body comprises a frame, two sets of welding transformers and two sets of welding controllers, the welding transformers and the welding controllers are arranged inside the frame, and the first electrode assembly, the second electrode assembly and the clamping assembly are arranged on the upper part of the frame;

one set of the welding transformers and one set of the welding controllers are connected with the first electrode assembly, and the other set of the welding transformers and the other set of the welding controllers are connected with the second electrode assembly.

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