Buffer electrode for welding machine

Abstract

The utility model belongs to the technical field of rivet welding machines, and particularly relates to a buffer electrode for a welding machine, which comprises a hanging bracket and a conductive band which are arranged on a welding machine main body, a buffer spring is arranged between the hanging bracket and the welding machine main body, an upper electrode is fixed at the bottom of the hanging bracket, and a lower electrode is fixed below the upper electrode. The conductive band penetrates through the hanging bracket to be arranged above the upper electrode, a circuit arranged in the welding machine is communicated with the conductive band and the lower electrode, the upper electrode is separated from the conductive band in the relaxed state of the buffer spring, and the upper electrode is in contact with the conductive band to be electrified in the compressed state of the buffer spring. According to the buffer electrode, hard connection of the upper electrode is changed into flexible connection, a buffer effect can be achieved when the upper electrode and the lower electrode are contacted and electrified, abrasion generated in the collision process of the electrodes is avoided, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of riveting welding machines, and in particular relates to a buffer electrode for welding machines. Background Art

[0002] When the riveting welding machine is in use, the lower electrode is a fixed electrode, and the upper electrode is extended downward to contact the lower electrode and the weldment to be heated by electricity. Both the upper and lower electrodes are copper electrodes with a soft texture. During the welding operation, with multiple collisions between the upper and lower electrodes, the copper electrode will wear out, affecting the service life of the electrode. Summary of the invention

[0003] In view of the defects of the prior art mentioned above, the purpose of the utility model is to provide a buffer electrode for a welding machine, in which a buffer device is arranged on the upper electrode of the welding machine to reduce the electrode wear caused by the collision process.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a buffer electrode for a welding machine, comprising a hanger and a conductive belt arranged on a welding machine body, a buffer spring is arranged between the hanger and the welding machine body, an upper electrode is fixed at the bottom of the hanger, and a lower electrode is fixed below the upper electrode. The conductive belt passes through the hanger and is arranged above the upper electrode. The internal circuit of the welding machine is respectively connected with the conductive belt and the lower electrode. When the buffer spring is in a relaxed state, the upper electrode is separated from the conductive belt. When the buffer spring is in a compressed state, the upper electrode is in contact with the conductive belt and is charged.

[0005] Based on the above technical scheme, the utility model separates the upper electrode from the traditional upper electrode seat and installs it in the hanger, thereby avoiding the collision force caused by the hard connection of the upper electrode. The upper electrode itself is not charged, and the lifting part of the welding machine body moves downward with the hanger and the upper electrode under the action of the driving device. When the upper electrode contacts the lower electrode, the flexible connection relationship of the buffer spring can reduce the force and reduce wear. At this time, the upper electrode and the conductive belt are still in a separated state, and the circuit is not connected. The lifting part of the welding machine body continues to move downward, and the buffer spring is compressed until the upper surface of the upper electrode contacts the conductive belt. The upper electrode is charged and the circuit is connected with the lower electrode to achieve welding.

[0006] Furthermore, the hanger is connected to the welding machine body via a guide column, the upper end of the guide column is slidably arranged in the welding machine body, the lower end of the guide column is fixedly connected to the hanger, and the buffer spring is sleeved outside the guide column.

[0007] Based on the above technical solution, the guide post provides guidance for the relative movement between the lifting part of the welding machine body and the hanger, and the welding machine body and the hanger are connected by the guide post to ensure the stability of the connection. A cavity for the displacement of the guide post head is formed in the welding machine body, and the guide post head is confined in the cavity. When the guide post head moves to the middle of the cavity, the upper electrode can contact the conductive tape. When the guide post head moves to the extreme position at the top of the cavity, the upper electrode can squeeze the conductive tape.

[0008] Furthermore, a fixing ring is provided at the bottom of the hanger, the upper electrode is installed in the fixing ring and fixed by a top screw, and the fixing ring is assembled in the middle of the upper electrode.

[0009] Furthermore, the lower electrode is installed in a lower electrode holder, the lower electrode holder is connected to a circuit inside the welding machine, and the lower electrode holder is fixedly arranged.

[0010] Furthermore, the hanger is a hollow frame structure, and a space is reserved in the middle of the hanger for the conductive belt to move up and down.

[0011] Furthermore, the conductive belt is a copper ring belt.

[0012] The beneficial effects of the utility model are as follows: the buffer electrode of the utility model changes the hard connection of the upper electrode into a flexible connection, which can play a buffering role when the upper electrode and the lower electrode are in contact and energized, avoids wear caused by electrode collision, and improves the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the buffer electrode of the utility model;

[0014] Figure 2 This is a schematic diagram of the position relationship of the buffer electrodes of the utility model when they are energized;

[0015] Figure 3 It is a side view of the buffer electrode of the utility model;

[0016] In the figure: 1. hanger, 2. conductive belt, 3. buffer spring, 4. upper electrode, 5. lower electrode, 6. guide column, 7. cavity, 8. fixing ring, 9. top screw, 10. lower electrode holder, 11. lifting part of welding machine body. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0018] See attached Figure 1-3 A buffer electrode for a welding machine comprises a hanger 1 and a conductive belt 2 arranged on a welding machine body, a buffer spring 3 is arranged between the hanger 1 and a lifting part 11 of the welding machine body, an upper electrode 4 is fixed to the bottom of the hanger 1, and a lower electrode 5 is fixed below the upper electrode 4. The conductive belt 2 passes through the hanger 1 and is arranged above the upper electrode 4. The internal circuit of the welding machine is respectively connected with the conductive belt 2 and the lower electrode 5. When the buffer spring 3 is in a relaxed state, the upper electrode 4 is separated from the conductive belt 2. When the buffer spring 3 is in a compressed state, the upper electrode 4 is in contact with the conductive belt 2 and is charged.

[0019] Based on the above technical solution, the utility model separates the upper electrode 4 from the traditional upper electrode holder and installs it in the hanger 1, avoiding the collision force generated by the hard connection of the upper electrode. The upper electrode 4 itself is not charged. The lifting part 11 of the welding machine body moves downward with the hanger 1 and the upper electrode 4 under the action of the driving device (such as a cylinder). When the upper electrode 4 contacts the lower electrode 5 or the weldment, the flexible connection relationship of the buffer spring 3 can reduce the force and reduce wear. At this time, the upper electrode 4 is still separated from the conductive belt 2, and the circuit is not connected. The lifting part of the welding machine body continues to move downward, and the buffer spring 3 is compressed until the upper surface of the upper electrode 4 contacts the conductive belt 2, the upper electrode 4 is charged, and the circuit is connected with the lower electrode 5 to achieve welding. The lifting part and lifting drive of the welding machine body can be realized by using the original mechanism of the riveting welding machine in the common knowledge, which is not the protection content of this application, and this application does not further describe and limit this part of the content.

[0020] Furthermore, the hanger 1 is connected to the welding machine body via a guide column 6 , the upper end of the guide column 6 is slidably disposed in the welding machine body, the lower end of the guide column 6 is fixedly connected to the hanger 1 , and the buffer spring 3 is sleeved outside the guide column 6 .

[0021] Based on the above technical solution, the guide post 6 provides a guide for the relative movement between the lifting part of the welding machine body and the hanger 1, and the welding machine body and the hanger 1 are connected by the guide post 6 to ensure the stability of the connection. A cavity 7 for the displacement of the guide post head is formed in the welding machine body, and the guide post head is confined in the cavity 7. When the guide post head moves to the middle of the cavity 7, the upper electrode 4 can contact the conductive belt 2. When the guide post head moves to the upper limit position of the cavity 7, the upper electrode 4 can squeeze the conductive belt 2, ensuring that under multiple contact conditions, the conductive belt 2 can still contact the upper electrode 4 for conduction.

[0022] Furthermore, a fixing ring 8 is provided at the bottom of the hanger 1, and the upper electrode 4 is installed in the fixing ring 8 and fixed by a top screw 9, and the fixing ring 8 is assembled in the middle of the upper electrode 4. The fixing ring 8 is located in the middle of the upper electrode 4, and its height does not exceed the upper and lower end faces of the upper electrode 4, and does not affect the contact and conduction between the upper end face of the upper electrode 4 and the conductive belt 2, and the contact and conduction between the lower end face of the upper electrode 4 and the lower electrode 5. The fixing ring 8 is made of insulating material or has an insulating material built in to isolate the upper electrode 4. The upper electrode 4 can be charged only when it is in contact with the conductive belt 2. The upper electrode 4 is detachably connected to the fixing ring 8 by the top screw 9, which is convenient for replacing the upper electrode.

[0023] Furthermore, the lower electrode 5 is installed in a lower electrode holder 10, the lower electrode holder 10 is connected to a circuit inside the welding machine, and the lower electrode holder 10 is fixedly arranged.

[0024] Furthermore, the hanger 1 is a hollow frame structure, and a space is reserved in the middle of the hanger 1 for the conductive belt 2 to move up and down. The hanger 1 and the conductive belt 2 are connected in a cross-shaped manner, and the relative position of the two can be moved, so as to achieve contact or separation between the conductive belt 2 and the upper electrode 4.

[0025] Furthermore, the conductive belt 2 is a copper ring belt. Copper products are conductive and soft, and while connecting the upper electrode to conduct electricity, the ring-shaped conductive belt 2 can provide a part of the buffering effect when contacting the upper electrode 4, reducing the collision force and compressing a part of the conductive belt, ensuring that the conductive belt 2 and the upper electrode 4 are in contact.

[0026] It should be noted that the parts not described in detail in the present invention are prior art.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0032] The above examples are only the best embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. A buffer electrode for a welding machine, characterized in that: It includes a hanger and a conductive belt arranged on the welding machine body, a buffer spring is arranged between the hanger and the welding machine body, an upper electrode is fixed at the bottom of the hanger, and a lower electrode is fixed below the upper electrode. The conductive belt passes through the hanger and is arranged above the upper electrode. The internal circuit of the welding machine is respectively connected with the conductive belt and the lower electrode. When the buffer spring is in a relaxed state, the upper electrode is separated from the conductive belt. When the buffer spring is in a compressed state, the upper electrode is in contact with the conductive belt and is charged.

2. A buffer electrode for a welding machine according to claim 1, characterized in that: The hanger is connected to the welding machine body through a guide column, the upper end of the guide column is slidably arranged in the welding machine body, the lower end of the guide column is fixedly connected to the hanger, and the buffer spring is sleeved outside the guide column.

3. A buffer electrode for a welding machine according to claim 1, characterized in that: A fixing ring is arranged at the bottom of the hanger, the upper electrode is installed in the fixing ring and fixed by a top screw, and the fixing ring is assembled in the middle of the upper electrode.

4. A buffer electrode for a welding machine according to claim 1, characterized in that: The lower electrode is installed in the lower electrode seat, the lower electrode seat is connected with the circuit inside the welding machine, and the lower electrode seat is fixedly arranged.

5. A buffer electrode for a welding machine according to claim 1, characterized in that: The hanger is a hollow frame structure, and a space is reserved in the middle of the hanger for the conductive belt to move up and down.

6. A buffer electrode for a welding machine according to claim 1, characterized in that: The conductive belt is a copper ring belt.

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