Apparatus for fixing welding material

Abstract

The present invention relates to a welding base material fixing device, wherein the welding base material (20) is fixed by adsorbing the opposite side of the welding surface (21) of the welding base material (20) using a vacuum cup (200), thereby eliminating welding interference factors such as clamps on the welding surface (21) of the welding base material (20), and thereby improving workability and welding quality.

Description

Technology Field

[0001] The present invention relates to a welding base material fixing device, and more specifically, to a welding base material fixing device that fixes the welding base material using a vacuum during friction stir welding. Background Technology

[0002] In today's advanced industrial society, the development of welding technology is further enhancing product productivity and quality, and countries around the world are making significant efforts to develop new welding technologies to increase productivity, which directly impacts the price competitiveness of export products.

[0003] Friction Stir Welding (FSW) technology, an eco-friendly and energy-saving production process developed by The Welding Institute (TWI) in the UK in 1991, is a solid-state welding method in which the base material does not melt. It is receiving significant attention from the industrial sector due to its superior weld characteristics and quality compared to conventional fusion welding methods, and is achieving remarkable results in the application process for railway vehicles, ships, aircraft, automobiles, and semiconductor fields.

[0004] Friction stir welding refers to a method of joining two separated metals by installing a rotating tool at the joint and utilizing the frictional heat generated between the rotating tool and the metals to be joined.

[0005] This friction stir welding is primarily utilized for non-ferrous sheet materials, such as precipitation-hardened aluminum alloys, which are prone to welding cracks and deformation during high-temperature fusion welding, and research is also actively underway to apply it to steel materials with high heat sensitivity.

[0006] The friction stir welding device includes a friction stir welding tool made of a material having a higher hardness than the base material being joined, and a driving member that moves the friction stir welding tool along the joint of two divided base materials while rotating the friction stir welding tool.

[0007] Therefore, as the friction stir welding tool rotates and moves along the joint of the two base materials, frictional heat is generated between the friction stir welding tool and the joint of the base materials, and solid-state joining is achieved as the stirring action of the material is activated by the plastic flow of the softened joint due to this frictional heat and the pressure applied by the friction stir welding tool.

[0008] Meanwhile, conventionally, during friction stir welding, the base material to be welded (hereinafter referred to as the welding base material) was placed on the welding die, and welding was performed after fixing the welding base material using a clamp provided on the welding die.

[0009] However, when fixing the welding base material using a clamp, the clamp positioned on the welding surface may interfere with the welding process, which has the disadvantage of reducing workability and, in severe cases, causing welding defects.

[0010] The matters described above as background technology are intended only to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. Prior art literature

[0011] KR 10-2014-0141216A The problem to be solved

[0012] The present invention is a welding base material fixing device that fixes the welding base material using a vacuum during friction stir welding, and aims to eliminate welding interference factors such as clamps on the welding surface where welding is performed, thereby improving workability and welding quality. means of solving the problem

[0013] The welding base material fixing device of the present invention for achieving the above objective is characterized by comprising: a vacuum pipe connected to a vacuum pump that generates vacuum pressure; and a plurality of vacuum cups connected to the vacuum pipe and adsorbing and fixing the welding base material with the generated vacuum pressure.

[0014] The above vacuum cup contacts the opposite side of the welding surface of the welding base material to adsorb the welding base material; and when the welding base material is adsorbed and fixed by the vacuum cup, the upper surface of the welding base material becomes the welding surface where welding is performed by the welding equipment.

[0015] It is characterized by further including an actuator connected to the above vacuum cup and moving the vacuum cup up and down when operated.

[0016] The above actuator is characterized by including an actuator rod that moves linearly in the up-and-down direction when the actuator is operated; and further including a connecting frame that connects the vacuum pipe and the actuator rod.

[0017] It is characterized by further including a support frame that is combined with the above-mentioned connecting frame and supports one side of the welding base material adsorbed in the vacuum cup.

[0018] The above support frame is characterized by supporting the weld base material by contacting the opposite side of the weld surface of the weld base material. Effects of the invention

[0019] The welding base material fixing device according to the present invention is configured to fix the welding base material by adsorbing the opposite side of the welding surface using a vacuum cup, thereby eliminating welding interference factors such as clamps on the welding surface of the welding base material, and thus has the effect of improving workability and welding quality. Brief explanation of the drawing

[0020] FIG. 1 is a drawing for explaining a welding base material fixing device according to the present invention. Specific details for implementing the invention

[0021] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are given the same reference number, and redundant descriptions thereof will be omitted.

[0022] The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification, and do not inherently possess distinct meanings or roles.

[0023] In describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted.

[0024] In addition, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that all modifications, equivalents, and substitutions included within the concept and technical scope of the present invention are included.

[0025] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0026] When it is stated that one component is "connected" or "joined" to another component, it should be understood that while it may be directly connected or joined to that other component, there may also be other components in between.

[0027] On the other hand, when it is stated that one component is "directly connected" or "directly coupled" to another component, it should be understood that there are no other components in between.

[0028] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0029] In this specification, terms such as “comprising7” or “having” are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should not be understood as precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0030] Furthermore, the terms "Unit" or "Control Unit" included in names such as Motor Control Unit (MCU) and Hybrid Control Unit (HCU) are merely widely used terms for naming controllers that control specific vehicle functions, and do not refer to generic function units.

[0031] A controller may include a communication device that communicates with other controllers or sensors to control the function it is responsible for, a memory that stores an operating system, logic instructions, and input / output information, and one or more processors that perform judgments, calculations, decisions, etc., necessary for controlling the function it is responsible for.

[0032] Below, we will examine a welding base material fixing device according to a preferred embodiment of the present invention.

[0033] A welding base material fixing device according to the present invention may include a vacuum pipe (100) connected to a vacuum pump (10) that generates vacuum pressure as shown in FIG. 1; and a plurality of vacuum cups (200) connected to the vacuum pipe (100) and adsorbing and fixing a welding base material (20) with the generated vacuum pressure.

[0034] The vacuum cups (200) may be composed of two or more multiple units, and a vacuum pipe (100) may be connected to each vacuum cup (200), and the vacuum pump (10) that generates vacuum pressure may be composed of one unit so as to be configured to transmit vacuum pressure to all vacuum pipes (100).

[0035] The vacuum cup (200) is preferably formed of a rubber material that can more easily adsorb the welding base material (20) using vacuum pressure, but is not limited thereto.

[0036] The vacuum cup (200) comes into contact with the opposite side of the welding surface (21) on the welding base material (20) to adsorb the welding base material (20), and when the welding base material (20) is adsorbed and fixed by the vacuum cup (200), the upper surface of the welding base material (20) can become the welding surface (21) where welding is performed by the welding equipment (30).

[0037] The welding equipment (30) may be, for example, a friction stir welding (FSW) device, but is not limited thereto.

[0038] The welding base material fixing device according to the present invention may further include an actuator (300) connected to a vacuum cup (200) and moving the vacuum cup (200) up and down when operated.

[0039] The actuator (300) may be composed of a pneumatic cylinder or a hydraulic cylinder, but is not limited thereto.

[0040] The actuator (300) may be configured to operate the vacuum cups (200) individually by having the same number as the vacuum cups (200), or it may be configured to operate multiple vacuum cups (200) simultaneously with one actuator (300).

[0041] The actuator (300) includes an actuator rod (310) that moves linearly in the up and down direction when the actuator (300) is operated, and the vacuum pipe (100) and the actuator rod (310) can be connected via a connecting frame (400).

[0042] Accordingly, the vacuum cup (200) can be structured to be connected to the actuator (300) through the vacuum pipe (100), the connecting frame (400), and the actuator rod (310).

[0043] The welding base material fixing device according to the present invention may further include a support frame (500) that is coupled to a connecting frame (400) and supports one side of a welding base material (20) adsorbed in a vacuum cup (200).

[0044] The support frame (500) may be configured to connect two connecting frames (400) as illustrated, or configured to connect with one connecting frame (400).

[0045] The support frame (500) can support the welding base material (20) by having its lower end connected to the connecting frame (400) and its upper end in contact with the opposite side of the welding surface (21) of the welding base material (20), that is, the bottom surface where welding does not proceed.

[0046] The surface on which the upper part of the support frame (500) contacts and supports the welding base material (20) and the surface on which the vacuum cup (200) contacts and adsorbs can be the same surface.

[0047] As described above, the welding base material fixing device according to the present invention is configured to fix the welding base material (20) by adsorbing the opposite side of the welding surface (21) of the welding base material (20) using a vacuum cup (200), thereby eliminating welding interference factors such as clamps on the welding surface (21) of the welding base material (20), and thus has the advantage of improving workability and welding quality.

[0048] Although the present invention has been illustrated and described in relation to specific embodiments, it will be obvious to those skilled in the art that the present invention can be modified and changed in various ways without departing from the technical spirit of the invention as provided by the following claims. Explanation of the symbols

[0049] 10 - Vacuum pump 20 - Welding base material 21 - Welding surface 30 - Welding Equipment 100 - vacuum pipe 200 - Vacuum cup 300 - Actuator 310 - Actuator rod 400 - Connection Frame 500 - Support Frame

Claims

Claim 1 A welding base material fixing device characterized by comprising: a vacuum pipe connected to a vacuum pump that generates vacuum pressure; a plurality of vacuum cups connected to the vacuum pipe and adsorbing and fixing a welding base material with the generated vacuum pressure; an actuator connected to the vacuum cups and moving the vacuum cups up and down when operated; an actuator rod provided in the actuator and moving linearly up and down when the actuator is operated; a connecting frame connecting the vacuum pipe and the actuator rod; and a support frame coupled to the connecting frame and supporting one side of the welding base material adsorbed in the vacuum cups. Claim 2 A welding base material fixing device according to claim 1, wherein the vacuum cup contacts the opposite side of the welding surface of the welding base material to adsorb the welding base material; and when the welding base material is adsorbed and fixed by the vacuum cup, the upper surface of the welding base material becomes the welding surface where welding is performed by the welding equipment. Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A welding base material fixing device according to claim 1, characterized in that the support frame supports the welding base material by contacting the opposite side of the welding surface of the welding base material.

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