CN105458485A - Projection welder device - Google Patents

Abstract

The invention relates to a projection welding machine device, which comprises a projection welding machine body, an upper electrode arm, a lower electrode seat, an upper electrode, a lower electrode and a controller, and the upper electrode is arranged on the projection welding machine body through the upper electrode arm Above, the lower electrode is set on the projection welding machine body through the lower electrode seat and is located below the upper electrode, and the lower electrode seat and the upper electrode arm are connected to the projection welding machine body through slide rails, The controller is arranged on the side wall of the projection welding machine body, and the controller is respectively connected with the lower electrode base and the upper electrode arm through the built-in circuit. Compared with the prior art, the present invention has simple structure, convenient operation, adopts slide rail design, and separates the upper electrode from the lower electrode, so that the area of the welding workpiece is not limited by the structural size of the projection welding machine frame, and the application range is wider. It can effectively reduce the number of workpiece clamping, improve the efficiency of working hours, and save production costs.

Description

A projection welding device

technical field

The invention relates to a welding device, in particular to a projection welding machine device.

Background technique

At present, in automobile production, when welding nuts or bolts on large stamping parts (such as the inner panel of the front door, the inner panel of the engine cover, the inner panel of the back door, the inner panel of the rear door, etc.), the nuts are usually welded first. Or the bolts are placed on the large stamping parts where they need to be welded, and then welded by a projection welding machine. However, due to the large workpiece area of large stamping parts, it is often limited by the welding machine frame. It is difficult to weld the nuts or bolts in the middle of the workpiece, that is, the area of the welded workpiece is greatly limited, and it takes a lot of time to complete the welding of the entire workpiece. It is not only time-consuming and labor-intensive to re-disassemble and clamp each time, but it is also difficult to ensure the accuracy of each re-clamping position, which will directly affect the quality of the final product.

Another technical defect of the traditional projection welding machine is that when performing nut projection welding, the current needs to flow through the nut and the workpiece first, and then be directly transmitted to the electrode. When fixing the nut, if the conductive positioning pin is used, it will make the Part of the current is directly transmitted to the electrode through the nut and the conductive positioning pin, which will cause the current to shunt, resulting in welding failure or requiring a higher power projection welding machine to complete the projection welding. Therefore, in most cases, plastic positioning pins are used to fix the nuts. However, due to frequent loading and unloading of the nuts, repeated friction will wear the plastic positioning pins, which will lead to inaccurate positioning and directly affect the subsequent welding quality.

Contents of the invention

The object of the present invention is to provide a projection welding machine device with simple structure and convenient operation in order to overcome the defects of the above-mentioned prior art, so that the area of the welding workpiece is not limited, the number of times of workpiece clamping can be effectively reduced, it is long-lasting and durable, and saves energy. production cost purposes.

The purpose of the present invention can be achieved through the following technical solutions:

A projection welding device, the device includes a projection welding machine body, an upper electrode arm, a lower electrode seat, an upper electrode, a lower electrode and a controller, the upper electrode is arranged on the projection welding machine body through the upper electrode arm, the The lower electrode is arranged on the projection welding machine body through the lower electrode seat and is located below the upper electrode, and the lower electrode seat and the upper electrode arm are connected with the projection welding machine body through slide rails. The controller is arranged on the side wall of the projection welding machine body, and the controller is respectively connected with the lower electrode seat and the upper electrode arm through the built-in circuit.

The projection welding machine body includes a lower base plate, a support frame and a beam plate, the bottom of the support frame is arranged on the lower base plate, the upper side wall of the support frame is provided with a groove, and a slide rail is arranged in the groove , the beam plate is located above the lower base plate, and is slidably coupled with the support frame through slide rails.

The lower electrode base is set on the lower base plate through the slide rail, the upper electrode arm is set on the beam plate through the slide rail, and the lower electrode base and the upper electrode arm are slidingly connected with the projection welding machine body through the slide rail .

The lower electrode includes a lower electrode head, a cylindrical lower electrode body and a positioning pin, the lower electrode head is embedded in the top of the lower electrode body, and the positioning pin is arranged on the lower electrode head.

The bottom of the lower electrode body is provided with an external thread, and the top of the lower electrode holder is provided with an internal thread hole matching the external thread, and the bottom of the lower electrode body is fixed on the lower electrode by a nut and a gasket. seat.

The positioning pin is made of ceramic material.

When working, the controller first adjusts the position of the upper electrode arm and the lower electrode seat in the horizontal direction until the upper electrode and the lower electrode are aligned with each other, and then adjusts the position of the beam plate on the support frame in the vertical direction until the upper electrode is aligned with the lower electrode. The vertical distance between the electrode and the lower electrode reaches the set value, and then the workpiece is positioned through the positioning pin on the lower electrode. After the positioning is completed, the workpiece can be welded.

Compared with the prior art, the present invention has the following characteristics:

1. The slide rail design is adopted, and the upper electrode is separated from the lower electrode, so that the welding workpiece area is not limited by the structure size of the projection welding machine frame, and the application range is wider;

2. It can effectively reduce the number of workpiece clamping, improve the efficiency of working hours, and save production costs;

3. The structure is simple, the operation is convenient, and the positioning pin made of ceramic material is used, which is more durable, safe and reliable.

Description of drawings

Fig. 1 is the structural representation of a kind of projection welding machine device of the present invention;

Instructions for marks in the figure:

1-lower electrode seat, 2-upper electrode arm, 3-upper electrode, 4-lower electrode body, 5-positioning pin, 6-lower electrode head, 7-support frame, 8-lower bottom plate, 9-nut, 10- gasket.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example:

As shown in Figure 1, a projection welding device includes a projection welding machine body, an upper electrode arm 2, a lower electrode seat 1, an upper electrode 3, a lower electrode and a controller, and the upper electrode 3 is set through the upper electrode arm 2 On the projection welding machine body, the lower electrode is set on the projection welding machine body through the lower electrode holder 1 and is located below the upper electrode 3, and the lower electrode holder 1 and the upper electrode arm 2 are connected to the projection welding machine body through slide rails. The controller is arranged on the side wall of the projection welding machine body, and the controller communicates with the lower electrode base 1 and the upper electrode arm 2 respectively through the built-in circuit. The projection welding machine body includes a lower base plate 8, a support frame 7 and a beam plate, the bottom of the support frame 7 is arranged on the lower base plate 8, a groove is opened on the upper side wall of the support frame 7, a slide rail is arranged in the groove, and the beam plate is located on The top of the lower bottom plate 8, and is slidably coupled with the support frame 7 through slide rails. The lower electrode holder 1 is arranged on the lower base plate 8 through the slide rail, and the upper electrode arm 2 is arranged on the beam plate through the slide rail.

The lower electrode includes a lower electrode head 6 , a cylindrical lower electrode body 4 and a positioning pin 5 . The positioning pin 5 is made of ceramic material. The bottom of the lower electrode body 4 is provided with an external thread, and the top of the lower electrode holder 1 is provided with an internal thread hole matching the external thread.

When working, the controller first adjusts the position of the upper electrode arm 2 and the lower electrode seat 1 in the horizontal direction until the upper electrode 3 and the lower electrode are aligned with each other, and then adjusts the position of the beam plate on the support frame 7 in the vertical direction. Adjust until the vertical distance between the upper electrode 3 and the lower electrode reaches the set value, and then position the workpiece through the positioning pin 5 on the lower electrode. After the positioning is completed, the workpiece can be welded.

Claims (7)

1. a projection welder device, this device comprises projection welder body, upper electrode arm, lower electrode holder, top electrode, bottom electrode and controller, described top electrode is arranged on projection welder body by upper electrode arm, described bottom electrode to be arranged on projection welder body by lower electrode holder and to be positioned at the below of described top electrode, it is characterized in that, described lower electrode holder, upper electrode arm is all connected by slide rail and projection welder body, described controller is arranged on the sidewall of projection welder body, establish in controller passes through circuit respectively with lower electrode holder, upper electrode arm is connected.

2. a kind of projection welder device according to claim 1, it is characterized in that, described projection welder body comprises lower shoe, bracing frame and header board, the bottom of described bracing frame is arranged on lower shoe, the upper portion side wall of bracing frame has groove, be provided with slide rail in described groove, described header board is positioned at the top of lower shoe, and is slidably connected by slide rail and bracing frame.

3. a kind of projection welder device according to claim 1, it is characterized in that, described lower electrode holder is arranged on lower shoe by slide rail, and described upper electrode arm is arranged on header board by slide rail, and described lower electrode holder, upper electrode arm are all slidably connected by slide rail and projection welder body.

4. a kind of projection welder device according to claim 1, is characterized in that, described bottom electrode comprises lower electrode tip, cylindric bottom electrode body and alignment pin, and the top of described bottom electrode body is embedded with lower electrode tip, and described alignment pin is arranged on lower electrode tip.

5. a kind of projection welder device according to claim 1 or 4, it is characterized in that, the bottom of described bottom electrode body is provided with external screw thread, described lower electrode holder top is provided with the internal thread hole matched with described external screw thread, and the bottom of described bottom electrode body is fixed on lower electrode holder by nut and pad.

6. a kind of projection welder device according to claim 4, is characterized in that, described alignment pin adopts ceramic material to form.

7. a kind of projection welder device according to claim 1, it is characterized in that, during work, first upper electrode arm, lower electrode holder are carried out to the position adjustment of horizontal direction by controller, until top electrode and bottom electrode are aligned with each other, then the position that the header board on bracing frame carries out vertical direction is adjusted, until the vertical range between top electrode and bottom electrode reaches setting value, by the alignment pin on bottom electrode, workpiece is positioned again, after end to be positioned, can weld workpiece.