Welding rod fixing device and welding rod fixing method using the same

Abstract

The present invention relates to a welding rod fixing device and a welding rod fixing method using the same, comprising: a first surface having a first hole formed in the center thereof so that a welding rod can pass therethrough; a second surface having a second hole formed in the center thereof so that the welding rod can pass therethrough and at a position corresponding to the first hole; a third surface connecting the first surface and the second surface; a space portion formed by an outer circumferential surface formed by the third surface, the space portion being hollow from the outer circumferential surface to a center portion where the first hole and the second hole are connected; and a body portion including a fourth surface forming the space portion; and a coupling portion configured to be inserted into the space portion and to press the welding rod passing through the first hole and the second hole.

Description

[Technical Field]

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0170627, filed November 30, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a welding rod fixing device and a welding rod fixing method using the same, and more particularly to a welding rod fixing device for fixing a welding rod vertically and a welding rod fixing method using the same. [Background technology]

[0003] As technological development and demand for mobile devices continues to grow, rechargeable secondary batteries are being used as energy sources for various mobile devices. Secondary batteries are also attracting attention as energy sources for electric vehicles and hybrid electric vehicles, which are being proposed as alternatives to existing gasoline-powered vehicles and diesel-powered vehicles that use fossil fuels.

[0004] Depending on the shape of the battery case, secondary batteries are classified into cylindrical batteries and prismatic batteries, in which the electrode assembly is housed in a cylindrical or prismatic metal can, and pouch batteries, in which the electrode assembly is housed in a pouch-shaped case made of an aluminum laminate sheet.

[0005] On the other hand, in the case of cylindrical secondary batteries, the negative electrode tab is resistance-welded to the can, with the can acting as the negative electrode terminal. When resistance-welding the negative electrode tab to the can, if the welding angle is incorrect, spattering occurs, in which fine molten metal particles scatter around the weld, which can lead to low-voltage problems.

[0006] FIG. 1 is a diagram illustrating a state in which a welding rod is fixed in a welding rod fixing device according to the prior art.

[0007] Referring to FIG. 1, a conventional welding rod fixing device 20 interposes a welding rod 10 between two blocks 21 and 22, and fixes the welding rod 10 by joining the two blocks 21 and 22 together.

[0008] However, there are problems in that steps are easily formed on the top and bottom surfaces of the two blocks 21 and 22, so that the welding rod 10 and the welding surface of the workpiece are not perpendicular to each other, reducing the contact area, and further, the increased heat generation causes excessive melting, resulting in the occurrence of spattering. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Korean Patent Publication No. 10-2023-0053831 Summary of the Invention [Problem to be solved by the invention]

[0010] In order to solve the above problems, it is an object of the present invention to provide a welding rod fixing device and a welding rod fixing method using the same, which fixes a welding rod so that a step does not occur between the top and bottom surfaces and the welding surface of the workpiece is perpendicular to the welding rod. [Means for solving the problem]

[0011] As a technical means for achieving the above object, the welding rod fixing device according to one embodiment of the present invention comprises a first surface (110) having a first hole (111) formed in the center so that the welding rod (10) can pass through, a second surface (120) having a second hole (121) formed in the center at a position corresponding to the first hole (111) so that the welding rod (10) can pass through, a third surface (130) connecting the first surface (110) and the second surface (120), and a joint formed by the third surface (130). a body part (100) including a space part (150) formed so as to be hollow from a part of the outer circumferential surface to a center part where the first hole (111) and the second hole (121) are connected, and a fourth surface (140) forming the space part (150); and a coupling part (200) that can be inserted into the space part (150) and is configured to press the welding rod (10) passing through the first hole (111) and the second hole (121).

[0012] In addition, in the welding rod fixing device according to one embodiment of the present invention, the coupling part (200) is inserted into the space part (150) to come into contact with the fourth surface (140) and press the welding rod (10) together with the fourth surface (140).

[0013] In addition, in the welding rod fixing device according to one embodiment of the present invention, a first groove (141) corresponding to the shape of a portion of the welding rod (10) is formed on a fourth surface (140) of the body portion (100) that contacts the coupling portion (200), and a second groove (210) corresponding to the shape of a portion of the welding rod (10) is formed on one surface of the coupling portion (200) that contacts the fourth surface (140).

[0014] In addition, the welding rod fixing device according to one embodiment of the present invention further includes a fastening member (300) for fastening the connecting portion (200) to the body portion (100) after the connecting portion (200) is inserted into the space portion (150).

[0015] In addition, in the welding rod fixing device according to one embodiment of the present invention, the fourth surface (140) includes a fastening groove (142) formed to allow the fastening member (300) to be inserted therein, and the coupling portion (200) includes a fastening hole (220) formed at a position corresponding to the fastening groove (142) to allow the fastening member (300) to be inserted therein.

[0016] In addition, in the welding rod fixing device according to one embodiment of the present invention, the fastening member (300) has a male thread formed on its outer surface so that it can pass through the fastening groove (142) and the fastening hole (220) at the same time, the fastening groove (142) and the fastening hole (220) have a female thread formed thereon, and the fastening member (300), the fastening groove (142), and the fastening hole (220) are connected by a screw connection method.

[0017] In addition, in the welding rod fixing device according to one embodiment of the present invention, the fastening grooves (142) are formed on the space portion (150) side, and a plurality of fastening holes (220) are formed across the first groove (141) so as not to interfere with the first groove (141), and a plurality of fastening holes (220) are formed across the one and other sides of the connecting portion (200), and a plurality of fastening holes (220) are formed across the second groove (210) so as not to interfere with the second groove (210).

[0018] In addition, in the welding rod fixing device according to one embodiment of the present invention, the central portion of the fourth surface (140) is configured as a curved surface that is concave toward the third surface (130), and the one surface of the connecting portion (200) is configured as a curved surface that corresponds to the shape of the central portion of the fourth surface (140) so as to engage with the central portion of the fourth surface (140).

[0019] In addition, in the welding rod fixing device according to the embodiment of the present invention, the other surface of the coupling part (200) is located inside the space part (150) and is configured as a flat surface.

[0020] In addition, in the welding rod fixing device according to one embodiment of the present invention, the central portion of the fourth surface (140) is configured as a flat surface, and the one surface of the connecting portion (200) is configured as a flat surface corresponding to the shape of the central portion of the fourth surface (140) so as to engage with the central portion of the fourth surface (140).

[0021] In addition, in the welding rod fixing device according to one embodiment of the present invention, the other surface of the coupling part (200) is configured as a curved surface that bulges outward.

[0022] Also, a method for fixing a welding rod using a welding rod fixing device according to one embodiment of the present invention includes the steps of: (S1) inserting the welding rod (10) so that it passes through the first hole (111) and the second hole (121) simultaneously; (S2) inserting the coupling part (200) into the space part (150); and (S3) inserting and fixing the fastening member (300) into the fastening groove (142) and the fastening hole (220).

[0023] In addition, in the welding rod fixing method according to an embodiment of the present invention, in the step (S2),

[0024] The coupling portion (200) is characterized by pressing a part of the welding rod (10) placed in the first groove (141) through the second groove (210). [Effects of the Invention]

[0025] As described above, according to the welding rod fixing device and the welding rod fixing method using the same of the present invention, the first and second holes are formed on the first and second surfaces of the one-piece body part, respectively, so that the welding rod can pass through, and the connecting part is inserted and fixed into the body part, so that the welding rod can be maintained in a vertical position.

[0026] In addition, according to the welding rod fixing device and the welding rod fixing method using the same according to the present invention, the body portion is provided with a first groove for accommodating a part of the welding rod, and the coupling portion is also provided with a second groove for accommodating a part of the welding rod. This prevents the welding rod from being distorted and keeps it always vertical, thereby minimizing welding defects. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a diagram illustrating a state in which a welding rod is fixed to a welding rod fixing device according to the prior art;

[0028] [Figure 2] 1 is a perspective view illustrating a state in which a welding rod is fixed to a welding rod fixing device according to a first embodiment of the present invention.

[0029] [Figure 3] 3 is a cross-sectional view of the welding rod fixing device shown in FIG. 2 taken along the XZ plane.

[0030] [Figure 4] 3 is a cross-sectional view of the welding rod fixing device shown in FIG. 2 taken along the XY plane.

[0031] [Figure 5] 1 is a perspective view illustrating a body part of a welding rod fixing device according to a first embodiment of the present invention.

[0032] [Figure 6] 1 is a perspective view illustrating a coupling portion of a welding rod fixing device according to a first embodiment of the present invention.

[0033] [Figure 7] FIG. 10 is a perspective view illustrating a state in which a welding rod is fixed to a welding rod fixing device according to a second embodiment of the present invention.

[0034] [Figure 8] 8 is a cross-sectional view of the welding rod fixing device shown in FIG. 7 taken along the XZ plane.

[0035] [Figure 9] 8 is a cross-sectional view of the welding rod fixing device shown in FIG. 7 taken along the XY plane.

[0036] [Figure 10] FIG. 6 is a perspective view illustrating a body part of a welding rod fixing device according to a second embodiment of the present invention.

[0037] [Figure 11] FIG. 10 is a perspective view illustrating a coupling portion of a welding rod fixing device according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0038] Hereinafter, with reference to the accompanying drawings, a detailed description will be given of an embodiment of the present invention that will enable a person skilled in the art to easily carry out the present invention. However, in describing the operation principle of the preferred embodiment of the present invention in detail, if it is determined that a detailed description of related well-known functions or configurations may unnecessarily obscure the gist of the present invention, such detailed description will be omitted.

[0039] Furthermore, the same reference numerals are used throughout the drawings for parts having similar functions and actions. Throughout the specification, when a part is said to be connected to another part, this includes not only a direct connection but also an indirect connection via another element therebetween. Furthermore, unless otherwise specified, "including a certain element" does not mean that other elements are excluded, but that other elements may also be included.

[0040] In the following, a welding rod clamping device according to the invention will be described.

[0041] Fig. 2 is a perspective view illustrating a state in which a welding rod is fixed in the welding rod fixing device according to the first embodiment of the present invention, Fig. 3 is a cross-sectional view of the welding rod fixing device shown in Fig. 2 taken along the xz plane, Fig. 4 is a cross-sectional view of the welding rod fixing device shown in Fig. 2 taken along the xy plane, Fig. 5 is a perspective view illustrating a body portion of the welding rod fixing device according to the first embodiment of the present invention, and Fig. 6 is a perspective view illustrating a coupling portion of the welding rod fixing device according to the first embodiment of the present invention.

[0042] 2 to 6, the welding rod fixing device according to the first embodiment of the present invention includes a body part 100, a coupling part 200, and a fastening member 300. As shown in FIG.

[0043] The body 100 is composed of a first surface 110, a second surface 120, a third surface 130, a fourth surface 140, and a space 150. For example, the body 100 may be in the form of a cylindrical block, with a portion of the outer periphery being open to form the space 150.

[0044] However, the body 100 is not limited thereto, and may be configured in a hexahedral shape with a portion of the outer circumferential surface being open to provide the space 150. For example, the body 100 may be configured as a member having the space 150 in addition to the first surface 110, the second surface 120, and the outer circumferential surface.

[0045] More specifically, the first surface 110 may be the upper surface of the body 100 (12 o'clock direction in FIG. 2), the second surface 120 may be the lower surface of the body 100 (6 o'clock direction in FIG. 2), and the third surface 130 may be the outer circumferential surface of the body 100. In addition, the fourth surface 140 may be a surface formed by opening a portion of the outer circumferential surface formed by the third surface 130.

[0046] A first hole 111 may be formed in the center of the first surface 110 of the body 100 so that the welding rod 10 can pass through. Also, a second hole 121 may be formed in the center of the second surface 120 at a position corresponding to the first hole 111 so that the welding rod 10 can pass through.

[0047] Here, the second hole 121 being formed at a position corresponding to the first hole 111 means that the second hole 121 is formed on the same Z-axis as the first hole 111 with reference to FIG.

[0048] In addition, for example, the first hole 111 and the second hole 121 are preferably set to correspond to the cross-sectional size of the welding rod 10 so that the welding rod 10 can pass through, or are set to be larger than the cross-sectional size of the welding rod 10 in consideration of installation errors, manufacturing errors, etc. That is, the first hole 111 and the second hole 121 can be formed to have a size that allows the welding rod 10 to be inserted without interference.

[0049] The third surface 130 is an outer peripheral surface connecting the first surface 110 and the second surface 120, and the space portion 150 may be formed such that a portion of the outer peripheral surface formed by the third surface 130 is open and hollow from a portion of the outer peripheral surface to the center where the first hole 111 and the second hole 121 are connected.

[0050] The fourth surface 140 is a surface that forms the space 150, and may be formed by connecting a part of the open outer periphery formed by the third surface 130 to a center portion where the first hole 111 and the second hole 121 are connected. Thus, the space 150 may be formed by the first surface 110, the second surface 120, and the fourth surface 140.

[0051] A first groove 141 corresponding to the shape of a portion of the welding rod 10 may be formed on the fourth surface 140 of the body 100. For example, the first groove 141 may be formed to accommodate (seat) a portion of the welding rod 10 that has passed through the first hole 111 and the second hole 121, i.e., a portion of the welding rod 10 located between the first hole 111 and the second hole 121.

[0052] In addition, the fourth surface 140 may be configured such that the surface on which the first groove 141 connecting the first hole 111 and the second hole 121 is formed has a curved surface recessed toward the third surface 130. Explaining in more detail with reference to FIG. 4, the center portion of the fourth surface 140 on which the first groove 141 is formed may have a curved surface recessed toward the third surface 130, forming an approximately U-shape.

[0053] 2 to 6, the coupling part 200 can be inserted into the space 150 of the body part 100 and can be configured to press the welding rod 10 passing through the first hole 111 and the second hole 121.

[0054] The coupling portion 200 may be configured to have a shape corresponding to the shape of the space portion 150 so that it can be inserted into the space portion 150. In other words, the coupling portion 200 may be configured to have the same shape as the space portion 150 formed by the fourth surface 140.

[0055] The coupling part 200 is preferably set to a size that corresponds to the cross-sectional size of the space 150 or is smaller than the cross-sectional size of the space 150 in consideration of construction errors, manufacturing errors, etc., so that it can be inserted into the space 150. That is, the coupling part 200 can be formed with a size that allows it to be inserted into the space 150 without interfering with the body part 100.

[0056] The coupling portion 200 can be configured to be inserted into the space 150 and contact the fourth surface 140, pressing the welding rod 10 together with the fourth surface 140. For example, the coupling portion 200 can be inserted into the space 150, with three of its peripheral surfaces contacting the fourth surface 140.

[0057] In addition, the coupling part 200 may have a second groove 210 formed on one surface that contacts the fourth surface 140, the second groove 210 having a shape corresponding to a portion of the welding rod 10. For example, the second groove 210 may be formed to accommodate (seat) a portion of the welding rod 10 that has passed through the first hole 111 and the second hole 121, i.e., a portion of the welding rod 10 located between the first hole 111 and the second hole 121. The second groove 210, together with the first groove 110, may press the welding rod 10.

[0058] The coupling part 200 may be formed with a curved surface corresponding to the shape of the central portion of the fourth surface 140 so that one surface (2 o'clock direction with reference to FIG. 6) that contacts the central portion of the fourth surface 140 engages with the central portion of the fourth surface 140. In other words, one surface of the coupling part 200 may be configured to have a convex curved surface.

[0059] 2 and 6, the other surface of the coupling part 200 (8 o'clock direction in FIG. 6) may be formed as a flat surface located inside the space part 150. In other words, referring to FIGS. 2 and 6, the other surface of the coupling part 200 may be formed as a flat surface located inside the space part 150 so that a portion of the first surface 110 and a portion of the second surface 120 protrude after the coupling part 200 is inserted into the space part 150.

[0060] Meanwhile, the fastening member 300 may be configured to be coupled to the body 100 after the coupling part 200 is inserted into the space 150. In other words, the coupling between the body 100 and the coupling part 200 may be achieved by the fastening member 300.

[0061] More specifically, the fourth surface 140 of the body 100 may be formed with a fastening groove 142 so that the fastening member 300 can be inserted therein. The fastening grooves 142 are formed on the side of the space 150, and a plurality of fastening grooves 142 may be formed on either side of the first groove 141 so as not to interfere with the first groove 141. For example, two fastening grooves 142 may be formed on either side of the first groove 141, or as another example, four fastening grooves 142 may be formed on either side of the first groove 141.

[0062] In addition, the coupling part 200 may be formed with fastening holes 220 at positions corresponding to the fastening grooves 142 so that the fastening members 300 can be inserted therein. The fastening holes 220 may be formed across one and the other surfaces of the coupling part 200, and a plurality of fastening holes 220 may be formed across the second groove 210 so as not to interfere with the second groove 210. For example, two fastening holes 220 may be formed across the second groove 210, or as another example, four fastening holes 220 may be formed across the second groove 210.

[0063] The fastening grooves 142 and fastening holes 220 are preferably formed to be positioned on the same line (in other words, the X-axis line with reference to FIG. 2) and are preferably formed in the same number.

[0064] In addition, the fastening groove 142 and the fastening hole 220 are formed with female threads, and the fastening member 300 is formed with male threads on its outer surface, so that they can be coupled to each other. For example, the fastening member 300 may be formed with a screw member having a male thread on its outer surface.

[0065] The fastening member 300 passes through the fastening hole 220 and the fastening groove 142 at the same time, and can be coupled to the fastening hole 220 and the fastening groove 142 in a screw coupling manner.

[0066] Therefore, the fastening member 300 can fix the coupling part 200 and the body part 100 so that they are coupled to each other.

[0067] Fig. 7 is a perspective view illustrating a state in which a welding rod is fixed in the welding rod fixing device according to the second embodiment, Fig. 8 is a cross-sectional view of the welding rod fixing device shown in Fig. 7 taken along the XZ plane, and Fig. 9 is a cross-sectional view of the welding rod fixing device shown in Fig. 7 taken along the XY plane. Also, Fig. 10 is a perspective view illustrating a body part of the welding rod fixing device according to the second embodiment, and Fig. 11 is a perspective view illustrating a coupling part of the welding rod fixing device according to the second embodiment.

[0068] 7 to 11, the welding rod fixing device according to the second embodiment of the present invention is similar to the welding rod fixing device according to the first embodiment described above, except for some components, and therefore the following description will focus on the different components.

[0069] The fourth surface 140 of the body 100 constituting the welding rod fixing device according to the second embodiment may have a flat central portion and a cut-out shape at a portion of the side surface forming the space 150. Referring to Fig. 9, the fourth surface 140 may be configured to form approximately a rectangle with one side open.

[0070] In addition, one surface of the coupling portion 200 that contacts the central portion of the fourth surface 140 may be configured as a flat surface that corresponds to the shape of the central portion of the fourth surface 140 so as to engage with the central portion of the fourth surface 140.

[0071] 7 and 11, the other surface of the coupling portion 200 may be configured as a curved surface having a curvature corresponding to a portion of the first surface 110 and the second surface 120.

[0072] In addition, the coupling part 200 can be inserted into the space 150, and the other surface of the coupling part 200 can be positioned at the same or close position in the vertical direction to the edges of the first surface 110 and the second surface 120.

[0073] Here, the front of both sides of the fourth surface 140 corresponds to the empty space 150, and therefore, portions of both sides of the coupling part 200 are exposed. Therefore, when coupling the coupling part 200 to the body part 100 or separating it from the body part 100, the exposed portions of both sides can serve as handles that an operator can grasp.

[0074] Next, a method for fixing a welding rod using the welding rod fixing device according to the first embodiment of the present invention will be described with reference to FIGS.

[0075] The method for fixing a welding rod according to the present invention includes the steps of (S1) inserting the welding rod 10 so that it passes through the first hole 111 and the second hole 121 simultaneously, (S2) inserting the coupling part 200 into the space part 150, and (S3) inserting and fixing the fastening member 300 into the fastening groove 142 and the fastening hole 220.

[0076] In step S2, the coupling part 200 may press a part of the welding rod 10 disposed in the first groove 141 through the second groove 210.

[0077] As described above, in the welding rod fixing device and the welding rod fixing method using the same according to the first embodiment of the present invention, the welding rod 10 can be fixed by inserting the coupling part 200 into the space part 150 and pressing the welding rod 10 after the welding rod 10 has passed through the first hole 111 and the second hole 121.

[0078] Although the welding rod fixing device according to the first embodiment has been described as an example here, the welding rod fixing device according to the second embodiment can also fix the welding rod in a similar manner.

[0079] Although specific portions of the contents of the present invention have been described in detail above, it will be apparent to those skilled in the art that such specific techniques are merely preferred embodiments and do not limit the scope of the present invention. It is obvious to those skilled in the art that various changes and modifications are possible within the scope and technical idea of ​​the present invention, and it goes without saying that such changes and modifications also fall within the scope of the accompanying claims. [Explanation of symbols]

[0080] 10 welding rods

[0081] 100 Torso

[0082] 110 Page 1 111 Hole 1

[0083] 120 Side 2 121 2nd Hall

[0084] 130 Page 3

[0085] 140 Page 4

[0086] 141 First groove 142 Fastening groove

[0087] 150 Space

[0088] 200 Joint

[0089] 210 Second groove 220 Concluding Holes

[0090] 300 Fastening members

Claims

1. a body portion including: a first surface having a first hole formed at the center thereof so that a welding rod can pass therethrough; a second surface having a second hole formed at the center thereof so that the welding rod can pass therethrough and at a position corresponding to the first hole; a third surface connecting the first surface and the second surface; a space portion having an outer circumferential surface formed by the third surface and an opening therein, the space portion being hollow from the outer circumferential surface to a center portion where the first hole and the second hole are connected; and a fourth surface forming the space portion; a coupling portion that can be inserted into the space and is configured to press the welding rod passing through the first hole and the second hole.

2. The welding rod fixing device according to claim 1 , wherein the coupling portion is configured to be inserted into the space to contact the fourth surface and press the welding rod together with the fourth surface.

3. a first groove corresponding to a shape of a part of the welding rod is formed on a fourth surface of the body portion that contacts the coupling portion; The welding rod fixing device according to claim 2 , wherein the coupling portion has a second groove formed on one surface thereof that contacts the fourth surface and that corresponds to a shape of a portion of the welding rod.

4. The welding rod fixing device according to claim 1 , further comprising a fastening member for fastening the coupling portion to the body portion after the coupling portion is inserted into the space.

5. the fourth surface includes a fastening groove formed to allow the fastening member to be inserted therein; The welding rod fixing device according to claim 4 , wherein the coupling portion includes a fastening hole formed at a position corresponding to the fastening groove so that the fastening member can be inserted therein.

6. The fastening member has an external thread formed on an outer surface thereof, and is configured to be able to pass through the fastening groove and the fastening hole at the same time; 6. The welding rod fixing device according to claim 5, wherein the fastening groove and the fastening hole are formed with female threads, and the fastening member, the fastening groove and the fastening hole are coupled together by a screw coupling method.

7. The fastening grooves are formed on the space portion side, and a plurality of fastening grooves are formed on either side of the first groove so as not to interfere with the first groove, The welding rod fixing device according to claim 5 , wherein the fastening holes are formed across the one surface and the other surface of the coupling portion, and a plurality of fastening holes are formed on either side of the second groove so as not to interfere with the second groove.

8. a central portion of the fourth surface is configured as a curved surface recessed toward the third surface, The welding rod fixing device according to claim 2 , wherein the one surface of the coupling portion is configured as a curved surface corresponding to a shape of the central portion of the fourth surface so as to mesh with the central portion of the fourth surface.

9. The welding rod fixing device according to claim 8 , wherein the other surface of the coupling portion is located inside the space portion and is configured as a flat surface.

10. a central portion of the fourth surface is configured as a flat surface; The welding rod fixing device according to claim 2 , wherein the one surface of the coupling portion is configured as a flat surface corresponding to a shape of the central portion of the fourth surface so as to engage with the central portion of the fourth surface.

11. The welding rod fixing device according to claim 10, wherein the other surface of the connecting portion is configured as a curved surface that bulges outward.

12. A method for fixing a welding rod using the welding rod fixing device according to any one of claims 1 to 11, comprising: (S1) inserting the welding rod so as to pass through the first hole and the second hole simultaneously; (S2) inserting the coupling portion into the space; The welding rod fixing method according to claim 1, further comprising: (S3) inserting and fixing the fastening member into the fastening groove and the fastening hole.

13. The method of claim 12, wherein in step (S2), the coupling portion presses a portion of the welding rod disposed in the first groove through the second groove.

Images