Switching ram for welding

Abstract

The utility model relates to a switch pressure head for welding, including shell, part setting in the contact of shell and the contact spring, anti -collision spring, anti -collision block, connecting piece and detection switch that set in shell entirely, the hollow inside shell, the inner wall of hollow is provided with first step surface and second step surface along the axial direction, the contact outer wall has a convex part, and the contact spring sets between convex part and second step surface, the anti -collision spring sets between the contact end face and the anti -collision block end face, the anti -collision block is set in the movable wall of shell along the circumferential direction, and the movable range is limited in the circumferential direction from first step surface to second step surface, and the connecting piece is along the axial direction and is set in the anti -collision block with the contact fixed connection, and the detection switch is fixed in the inner wall of shell, and is located in the movable range of anti -collision block, the device isolates the distance of detection switch and welding piece, prolongs the service life of detection switch, guarantees the continuity and reliability of automatic welding production.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to a welding switch pressure head. Background Technology

[0002] With the continuous improvement of industrial automation, robotic arms and automated equipment are increasingly widely used in the welding field. Through program control, robotic arms can achieve continuous and precise automatic welding, significantly improving production efficiency and product quality consistency. During this process, to ensure that the workpieces are correctly placed without omissions or misplacements, detection switches are typically installed at the welding station or on the fixture.

[0003] However, in actual welding production environments, the detection switch is directly exposed to harsh working conditions and faces many challenges: First, the arc initiation during welding generates strong high-frequency electromagnetic interference and sparks, which can easily damage the electronic components of the detection switch or cause signal misjudgment; Second, the high-temperature radiation and molten metal spatter generated during the welding process directly affect the switch surface, causing the switch housing to melt, the circuit to age, or the sensing surface to become contaminated, thereby shortening its service life; In addition, during loading, unloading, or welding, the robot or workpiece may accidentally collide with the detection switch due to positioning deviation, resulting in damage to the switch's mechanical structure or misalignment of its installation position.

[0004] Therefore, there is an urgent need for a protective device that can effectively isolate the effects of harsh welding environments, improve the reliability of detection switches, and is easy to maintain, so as to ensure the continuous and stable operation of automated welding production lines. Utility Model Content

[0005] (a) Technical problems to be solved This utility model addresses the above-mentioned problems by proposing a switch pressure head for welding. Its purpose is to solve the problems of easy damage, short lifespan, and unreliable operation caused by the detection switches on automated welding stations being directly exposed to harsh environments such as welding arc initiation, high temperature, metal spatter, and mechanical collisions in the prior art.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides a welding switch pressure head, including a housing, a contact partially disposed within the housing, and a contact spring, an anti-collision spring, an anti-collision block, a connector, and a detection switch, all disposed within the housing. The housing is hollow, with a first stepped surface and a second stepped surface arranged axially on its hollow inner wall. The outer wall of the contact has a protrusion, and the contact spring is disposed between the protrusion and the second stepped surface. The anti-collision spring is disposed between the end face of the contact and the end face of the anti-collision block. The anti-collision block is movably disposed circumferentially on the inner wall of the housing, with its range of motion limited from the first stepped surface to a circumferential direction away from the second stepped surface. The connector passes through the anti-collision block axially and is fixedly connected to the contact. The detection switch is fixed to the inner wall of the housing and located within the range of motion of the anti-collision block.

[0007] Furthermore, the connector is a screw.

[0008] Furthermore, one side of the inner wall of the housing has a threaded structure, and the detection switch is threadedly connected to the housing through the threaded structure.

[0009] Furthermore, the side of the contact that contacts the weldment has a spherical structure.

[0010] Furthermore, the contact has a threaded groove formed on its end face along the axial direction, and the connector is threaded into the threaded groove.

[0011] Furthermore, the outer shell, contacts, and anti-collision blocks are all non-conductive structures.

[0012] (III) Beneficial Effects Compared with existing technologies, the welding switch pressure head provided by this utility model solves the above-mentioned problems through a double buffer and force transmission mechanism composed of a contact spring and an anti-collision spring, combined with an anti-collision block that can move within the housing: when the contact contacts the workpiece, the force drives the anti-collision block to move through the anti-collision spring to trigger the detection switch, thus achieving reliable signal transmission; if excessive pressing or collision occurs, the contact can continue to compress the anti-collision spring, thereby avoiding rigid impact directly acting on the detection switch and effectively preventing it from being damaged; at the same time, this structure increases the stroke required for triggering, which is equivalent to amplifying the sensing distance between the detection switch and the workpiece, improving detection stability and anti-interference ability; in addition, the entire device completely encloses the detection switch inside the housing, completely isolating it from the harsh environment of high temperature and arc spatter at the welding site, fundamentally extending the service life of the detection switch and ensuring the continuity and reliability of automated welding production. Attached Figure Description

[0013] Figure 1 This is a perspective view of a welding switch head disclosed in this application.

[0014] Figure 2 This is an internal cross-sectional view of a welding switch head disclosed in this application.

[0015] The reference numerals in the figure are as follows: 1. Outer shell; 2. Contact; 3. Contact spring; 4. Anti-collision spring; 5. Anti-collision block; 6. Connector; 7. Welded part; 20. Protrusion; 21. Spherical structure; 101. First step surface; 102. Second step surface. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] This utility model relates to a welding switch pressure head, the structure of which includes a housing 1, a contact 2, a contact spring 3, an anti-collision spring 4, an anti-collision block 5, a connecting member 6, and a detection switch (not shown). The contact 2 is located inside the housing 1, and all other components are completely housed within the housing 1. The housing 1 has a hollow structure, and its inner wall has a first stepped surface 101 and a second stepped surface 102 along the axial direction. The outer wall of the contact 2 has a protrusion 20, and the contact spring 3 is arranged between the protrusion 20 and the second stepped surface 102. The anti-collision spring 4 is installed between the end face of the contact 2 and the end face of the anti-collision block 5. The anti-collision block 5 can move circumferentially along the inner wall of the housing 1, and its movement range is limited to the side from the first stepped surface 101 to the side away from the second stepped surface 102. The connecting member 6 passes through the anti-collision block 5 axially and is fixedly connected to the contact 2. The detection switch is fixedly installed on the inner wall of the housing 1, and its position is within the range of motion of the anti-collision block 5.

[0020] Its working principle is as follows: When contact 2 contacts the weldment 7, the anti-collision block 5 is pushed towards the detection switch by the anti-collision spring 4 until the switch signal is triggered, achieving reliable detection; further compression of the anti-collision spring 4 can buffer mechanical impact, effectively protecting the detection switch from damage. This structure significantly improves the resistance to welding interference and anti-collision performance by increasing the detection distance and using double spring buffering, thereby greatly reducing the switch failure rate, extending service life, and ensuring the detection stability and continuous operation reliability of the equipment during automatic welding. When contact 2 leaves the weldment 7, contact 2 resets under the action of contact spring 3, and at the same time, the connecting part 6 drives the anti-collision block 5 to move until it resets.

[0021] Preferably, the connector 6 can be made of screws to provide a reliable connection and facilitate assembly and adjustment.

[0022] Part of the inner wall of the outer casing 1 can be machined into a threaded structure, so that the detection switch can be fixed inside the casing by a threaded connection, which is not only convenient for installation, but also convenient for daily maintenance and replacement.

[0023] The end of the contact 2 that contacts the weldment 7 is designed as a spherical structure 21, which helps to reduce friction and jamming during contact and improve the flexibility of movement.

[0024] A threaded groove is provided along the axial direction on the end face of the contact 2, and the connector 6 is installed in the groove by thread engagement, which further enhances the stability and adjustability of the overall structure.

[0025] In addition, the outer shell 1, contact 2 and anti-collision block 5 are all made of non-conductive materials, which effectively avoids the interference of electric arc or stray current on signal detection during the welding process and improves the anti-interference and safety of the system.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A welding switch pressure head, characterized in that, The device includes a housing, a contact partially disposed within the housing, and a contact spring, an anti-collision spring, an anti-collision block, a connector, and a detection switch, all disposed within the housing. The housing is hollow, with a first stepped surface and a second stepped surface formed along its axial direction on its inner wall. The outer wall of the contact has a protrusion, and the contact spring is disposed between the protrusion and the second stepped surface. The anti-collision spring is disposed between the end face of the contact and the end face of the anti-collision block. The anti-collision block is movably disposed along the circumferential direction on the inner wall of the housing, with its range of motion limited from the first stepped surface to a circumferential direction away from the second stepped surface. The connector passes through the anti-collision block along the axial direction and is fixedly connected to the contact. The detection switch is fixed to the inner wall of the housing and located within the range of motion of the anti-collision block.

2. The welding switch pressure head as described in claim 1, characterized in that, The connector is a screw.

3. A welding switch pressure head as described in claim 1, characterized in that, One side of the inner wall of the housing has a threaded structure, and the detection switch is threadedly connected to the housing through the threaded structure.

4. A welding switch pressure head as described in claim 1, characterized in that, The side of the contact point that contacts the workpiece has a spherical structure.

5. A welding switch pressure head as described in claim 2, characterized in that, The contact has a threaded groove formed on its end face along the axial direction, and the connector is threaded into the threaded groove.

6. A welding switch pressure head as described in claim 1, characterized in that, The outer shell, contacts, and anti-collision blocks are all non-conductive structures.

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