Electrode arm fixing structure for spot welder

Abstract

The utility model discloses a spot welding machine electrode arm fixed structure belongs to spot welding machine technical field. Including setting on the fixed arm of spot welding machine, the fixed arm is used for fixing electrode arm, and the fixed arm includes fixed link and the fixed lid of detachable connection in fixed link end, is embedded with the insert piece along the radial direction on the fixed link, and the fixed lid is equipped with a plurality of fixed bolt of being able to with insert piece screw connection along the axial movement of fixed link and is equipped with the bolt head of fixed bolt, and the bolt head of fixed bolt can abut with the side of fixed lid away from fixed link, the side of fixed lid to fixed link, the side of fixed link to fixed lid is provided with the arc groove of being able to surround the outer periphery of electrode arm respectively. The utility model discloses a spot welding machine electrode arm fixed structure solves the inconvenient adjustment, the problem of easy damage of thread of present spot welding machine electrode arm fixed mode.

Description

Technical Field

[0001] This utility model belongs to the field of spot welding machine technology, specifically relating to an electrode arm fixing structure for a spot welding machine. Background Technology

[0002] Welding machines have a wide range of applications and are indispensable in industries such as hardware manufacturing, automobile manufacturing, electronics, and aerospace.

[0003] However, existing spot welding machines have significant drawbacks in practical use. When spot welding workpieces with different structures, operators need to adjust the height and length of the upper and lower electrode arms and the electrode head. Currently, the commonly used fixing method involves securing and adjusting the electrode arms with four screws. Since the electrode arms are made of copper, frequent disassembly and reassembly easily leads to wear between the copper electrode arms and the screws, causing thread stripping and damage. Such problems not only affect the accuracy and stability of electrode arm adjustment and reduce welding quality, but also increase the operating costs and maintenance burden of the equipment. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an electrode arm fixing structure for spot welding machines, which solves the problems of inconvenient adjustment and easy damage of threads in the existing electrode arm fixing methods of spot welding machines.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an electrode arm fixing structure for a spot welding machine, comprising a fixing arm disposed on the spot welding machine, the fixing arm being used to fix the electrode arm, the fixing arm comprising a fixing rod and a fixing cover detachably connected to the end of the fixing rod;

[0006] The fixing rod is provided with an insert along its radial direction, and the fixing cover is provided with a plurality of fixing bolts that can be threadedly connected to the insert along the axial direction of the fixing rod. The bolt heads on the fixing bolts can abut against the side of the fixing cover opposite to the fixing rod.

[0007] The fixing cover has an arc-shaped groove on the side facing the fixing rod, and the fixing rod has an arc-shaped groove on the side facing the fixing cover, which can surround the outer periphery of the electrode arm.

[0008] Optionally, two fixing bolts are movably inserted through the fixing cover, and the two fixing bolts are symmetrically arranged along the arc-shaped groove on the fixing cover.

[0009] Optionally, the inner wall of the arc-shaped groove on the fixing cover or the fixing rod is embedded with an elastic pressure plate that can support the outer periphery of the electrode arm.

[0010] Optionally, the fixing cover is provided with a through hole for the fixing bolt to pass through, and the end of the fixing rod is provided with an inner hole corresponding to the through hole and for the fixing bolt to pass through. The opening edges of the through hole and the inner hole are provided with guide chamfers.

[0011] Optionally, the fixed cover has a recessed groove at one end opposite to the fixed rod, which can extend to its edge, and the opening of the through hole is located at the bottom of the recessed groove.

[0012] Optionally, the inner wall of the arc-shaped groove on the fixing cover and the fixing rod is provided with anti-slip texture.

[0013] Optionally, the fixing rod is provided with a groove along its radial direction for embedding the insert, and the insert is clearance-fitted with the groove.

[0014] Optionally, the insert and the groove have a polygonal cross-section.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: By setting a fixed cover, a fixed rod, a fixing bolt passing through the fixed cover, and an insert embedded in the fixed rod, the position of the electrode arm can be clamped and fixed when the fixing bolt passing through the fixed cover and the fixed rod and threadedly connected to the insert is tightened, and the position of the electrode arm can be adjusted when the fixing bolt passing through the fixed cover and the fixed rod and threadedly connected to the insert is loosened, making operation convenient. At the same time, the fixing bolt is not threadedly connected to the electrode arm, which can effectively avoid the electrode arm from stripping threads or being damaged due to threaded connection with the fixing bolt. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the electrode arm fixing structure for a spot welding machine (fixing threads not tightened) in a preferred embodiment of this utility model;

[0018] Figure 2 This is a preferred embodiment of the present invention. Figure 1 A top-view structural diagram;

[0019] Figure 3 This is a preferred embodiment of the present invention. Figure 2 A sectional view of part of the structure at point AA;

[0020] Figure 4 This is an exploded structural diagram of the electrode arm fixing structure for a spot welding machine in a preferred embodiment of this utility model;

[0021] Among them, 1 is a fixing rod; 101 is an inner hole; 103 is a groove; 2 is a fixing cover; 201 is a through hole; 202 is a recessed groove; 3 is an insert; 4 is a fixing bolt; 5 is an electrode arm; 6 is an elastic pressure plate; and 102 is an arc-shaped groove. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0023] It should be noted that if directional indicators (such as up, down, bottom, top, etc.) are involved in this embodiment, these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] like Figures 1-4 As shown, an electrode arm fixing structure for a spot welding machine includes a fixing arm mounted on the spot welding machine. The fixing arm is used to fix the electrode arm 5. By adjusting the position of the electrode arm 5 on the fixing arm, the height between the electrode arm 5 and the electrode head on the spot welding machine can be changed. The fixing arm includes a fixing rod 1 and a fixing cover 2 detachably connected to the end of the fixing rod 1. The fixing rod 1 is provided with an insert 3 embedded radially therein. The fixing cover 2 is provided with a plurality of fixing bolts 4 that can be threadedly connected to the insert 3 along the axial direction of the fixing rod 1. The bolt heads on the fixing bolts 4 can abut against the side of the fixing cover 2 away from the fixing rod 1. The side of the fixing cover 2 facing the fixing rod 1 and the side of the fixing rod 1 facing the fixing cover 2 are respectively provided with arc-shaped grooves 102 that can surround the outer periphery of the electrode arm 5.

[0025] Specifically, the operator can manipulate the fixing bolt 4 through the fixing cover 2, and let one end of the fixing bolt 4 pass through the end of the fixing rod 1 until it is initially threadedly connected to the insert 3 embedded in the fixing rod 1. Then, the operator can manipulate the electrode arm 5 through the gap between the fixing cover 2 and the fixing rod 1 (i.e., the area enclosed by the arc-shaped groove 102 on the fixing rod 1 and the fixing cover 2). At this time, since the fixing bolt 4 and the insert 3 are not completely fastened, the electrode arm 5 can move up and down between the arc-shaped groove 102 on the fixing cover 2 and the fixing rod 1, so that the operator can easily adjust the position of the electrode arm 5 according to actual needs to meet the usage requirements of the spot welding machine. Finally, after the operator confirms the position of the electrode arm 5, the fixing bolt 4 can be tightened, thereby firmly clamping the electrode arm 5 through the arc-shaped groove 102 on the fixing cover 2 and the fixing rod 1.

[0026] It should be noted that the insert 3 is made of one or more hard alloy materials such as alloy steel and stainless steel. After the insert 3 is machined with an internal threaded hole to connect with the fixing bolt 4, it undergoes heat treatment to ensure high hardness and effectively prevent thread stripping or damage. Furthermore, the fixing rod 1 has a radial groove 103 for embedding the insert 3. The insert 3 fits snugly into the groove 103, allowing for timely replacement should the insert 3 be accidentally damaged.

[0027] The above, such as Figure 3 , Figure 4 As shown, the cross-section of the insert 3 and the groove 103 is polygonal to ensure that the internal threaded hole on the insert 3 can correspond to the fixing bolt 4 that passes through the fixing cover 2.

[0028] Furthermore, such as Figure 1 As shown, two fixing bolts 4 are movably inserted on the fixing cover 2, and the two fixing bolts 4 are symmetrically arranged along the arc-shaped groove 102 placed on the fixing cover 2. While positioning the connection position between the fixing cover 2 and the fixing rod 1, it can also improve the stability of the fixing cover 2 and the fixing rod 1 in clamping the electrode arm 5.

[0029] Furthermore, such as Figure 3As shown, the inner wall of the arc-shaped groove 102 on the fixing cover 2 or fixing rod 1 is embedded with an elastic pressure plate 6 that can support the outer periphery of the electrode arm 5. Specifically, the inner wall of the arc-shaped groove 102 is provided with a recessed groove. One end of the elastic pressure plate 6 can be connected to the bottom of the recessed groove by conventional technical means such as welding or bolt fixing. When the elastic pressure plate 6 is squeezed, it can be completely placed within the coverage of the recessed groove without affecting the inner wall of the arc-shaped groove 102 and the outer periphery of the electrode arm 5. That is, when the operator inserts the electrode arm 5 into the gap between the fixing cover 2 and the fixing rod 1, the elastic pressure plate 6 will be squeezed and deformed by the electrode arm 5. At the same time, based on its own deformation recovery ability (elastic force), the elastic pressure plate 6 can apply a certain pressure to the surface of the electrode arm 5, thereby creating a certain friction on the surface of the electrode arm 5 to prevent the electrode arm 5 from suddenly falling and injuring the operator due to loosening the fixing bolt 4. Furthermore, under the elastic support of the elastic pressure plate 6, the electrode arm 5 can stay in a fixed position for a short time, which makes it convenient for operators to adjust the position of the electrode arm 5 and reduce labor intensity.

[0030] In this embodiment, the fixing cover 2 is provided with a through hole 201 for passing through the fixing bolt 4, and the end of the fixing rod 1 is provided with an inner hole 101 corresponding to the through hole 201 and for passing through the fixing bolt 4. The opening edges of the through hole 201 and the inner hole 101 are provided with guide chamfers to guide the fixing bolt 4 to be threadedly connected to the insert 3.

[0031] Furthermore, such as Figure 4 As shown, a recessed groove 202 that can extend to the edge of the fixed cover 2 is provided at one end away from the fixed rod 1, and the opening of the through hole 201 is located at the bottom of the recessed groove 202.

[0032] Furthermore, the inner wall of the arc-shaped groove 102 on the fixing cover 2 and the fixing rod 1 is provided with anti-slip texture (the anti-slip texture on the fixing rod 1 is not shown in the figure) to increase the friction between the fixing cover 2, the fixing rod 1 and the electrode arm 5.

[0033] Working principle: By setting a fixed cover 2, a fixed rod 1, a fixed bolt 4 passing through the fixed cover 2, and an insert 3 embedded in the fixed rod 1, the fixed bolt 4 passing through the fixed cover 2 and the fixed rod 1 and threadedly connected to the insert 3 can clamp and fix the position of the electrode arm 5. At the same time, it can also avoid the fixed bolt 4 being directly threaded to the electrode arm 5, thereby avoiding the situation where the electrode arm 5 is damaged due to the threaded connection with the fixed bolt 4.

[0034] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An electrode arm fixing structure for a spot welding machine, comprising a fixing arm disposed on the spot welding machine, the fixing arm being used to fix an electrode arm (5), characterized in that: The fixed arm includes a fixed rod (1) and a fixed cover (2) detachably connected to the end of the fixed rod (1); Among them, the fixing rod (1) is provided with an insert (3) along its radial direction, and the fixing cover (2) is provided with a plurality of fixing bolts (4) that can be threadedly connected to the insert (3) along the axial direction of the fixing rod (1). The bolt head on the fixing bolt (4) can abut against the side of the fixing cover (2) away from the fixing rod (1). The fixed cover (2) has an arc-shaped groove (102) on the side facing the fixed rod (1), and the fixed rod (1) has an arc-shaped groove (102) on the side facing the fixed cover (2) to surround the outer periphery of the electrode arm (5).

2. The electrode arm fixing structure for a spot welding machine according to claim 1, characterized in that: Two fixing bolts (4) are movably inserted through the fixing cover (2), and the two fixing bolts (4) are symmetrically arranged along the arc-shaped groove (102) placed on the fixing cover (2).

3. The electrode arm fixing structure for a spot welding machine according to claim 1, characterized in that: The inner wall of the arc-shaped groove (102) on the fixed cover (2) or the fixed rod (1) is provided with an elastic pressure plate (6) that can support the outer periphery of the electrode arm (5).

4. The electrode arm fixing structure for a spot welding machine according to claim 1, characterized in that: The fixing cover (2) is provided with a through hole (201) for passing through the fixing bolt (4), and the end of the fixing rod (1) is provided with an inner hole (101) corresponding to the through hole (201) and for passing through the fixing bolt (4). The opening edges of the through hole (201) and the inner hole (101) are provided with guide chamfers.

5. The electrode arm fixing structure for a spot welding machine according to claim 4, characterized in that: The fixed cover (2) is provided with a recessed groove (202) that extends to the edge of the fixed rod (1) at one end, and the opening of the through hole (201) is located at the bottom of the recessed groove (202).

6. The electrode arm fixing structure for a spot welding machine according to claim 1, characterized in that: The inner wall of the arc-shaped groove (102) on the fixed cover (2) and the fixed rod (1) is provided with anti-slip texture.

7. The electrode arm fixing structure for a spot welding machine according to claim 1, characterized in that: The fixing rod (1) has a groove (103) for embedding the insert (3) along its radial direction, and the insert (3) is in clearance fit with the groove (103).

8. The electrode arm fixing structure for a spot welding machine according to claim 7, characterized in that: The insert (3) and the groove (103) have polygonal cross sections.

Images