JPH077037Y2 - Jig for preventing frame bending of frame - Google Patents

Description

[Detailed Description of the Invention] [Outline] When manufacturing a metal frame such as a rocker by a welding method using electricity, gas, laser light, etc. as a heat source, the frame frame of the frame is heated and naturally cooled during welding. Jig to prevent bending of the frame, for the purpose of flexibly and economically supporting production of multiple types of frames of different sizes Has a left-hand thread on one end of the cylinder with a handle for rotation attached to the center and a right-hand thread on the other end.
Each of the span adjusting cylinders is provided so as to be screwed with a left-hand threaded portion of the span adjusting cylinder so as to be movable in the axial direction of the adjusting cylinder, and at an end portion thereof, an engaging portion for the frame bone of the frame. Is provided so as to be screwed with the right-hand threaded portion of the span adjusting cylinder so as to be movable in the axial direction of the adjusting cylinder, and the end of the first supporting member is engaged with the frame bone of the framework. A second supporting member having a portion, and by rotating the span adjusting cylinder by the rotating handle, the distance between the engaging portions of the first and second supporting members is expanded and contracted to weld the frame. It is sometimes configured to define the distance between two frame bones that face each other.

[Industrial application field]

The present invention relates to a jig for preventing frame bending of a frame used for manufacturing a frame necessary for the construction of various rockers such as electronic devices by a welding method.

The framework of the rocker or the like, which is a pillar, is completed by combining at least four frame bones into a quadrangle and welding the joints.

However, when the frame bone is bent, the frame is deformed, the rocker is inferior in robustness, and the stationary state becomes unstable. Therefore, a welding technique capable of manufacturing an accurate square frame is required.

[Conventional technology]

"Sun" -shaped metal frame 7 as shown in FIG.
Is an angle made of iron or aluminum,
Two vertical frame bones 7a obtained by cutting the channel etc. to a predetermined size
And three horizontal frame bones 7b are combined in a frame shape, and the joint portion 7c is
It is made by welding with a welding device such as electricity, gas, and laser light.

In the frame 7 manufactured by such a welding method, the bending shown by the dotted line is generated in the vertical frame bone 7a due to heating and natural cooling during welding.

In order to prevent the occurrence of such a bend, the conventional third
As shown in the figure, square bar material such as iron or stainless steel is cut, and a convex portion 8a is provided on one main surface thereof.
A frame bone bending prevention jig 7 having the length W of 8a formed to be the same as the interval U between the two vertical frame bones 7a of the frame shown in FIG. 2 was prepared. The vertical frame bones 7a are placed between the vertical frame bones 7a to mechanically prevent the bending of the vertical frame bones 7a during welding.

[Problems to be solved by the device]

As described above, since the conventional frame bone bending preventing jig 8 has the length W of the convex portion fixed, many types of jigs must be prepared according to the dimension between the frame bones of the framework 7.

For this reason, there are many problems such as an increase in the cost for manufacturing the frame-bone-bending prevention jig, an increase in the management man-hours of the frame-bone-bending prevention jig, and an increase in the space for storage. It was

In order to solve the above-mentioned problems in manufacturing a plurality of types of frames by welding, the present invention has a flexible and economical frame frame. It is intended to provide a bending prevention jig.

[Means for Solving the Problems]

In order to achieve the above object, the frame bone bending preventing jig of the present invention, as shown in FIG. 1, has a left threaded portion on one end side and a right threaded portion on the other end of a cylinder having a turning handle attached to the central portion. Are provided so as to be respectively screwed with the left-hand threaded portion of the span adjusting cylinder and movable in the axial direction of the adjusting cylinder, and at the end portions thereof, the engagement with respect to the frame bones of the framework is performed. The first supporting member provided with a joint portion is provided so as to be screwed with the right-hand screw portion of the span adjusting cylinder so as to be movable in the axial direction of the adjusting cylinder, and the frame of the framework is provided at the end portion. And a second support member provided with an engaging portion for locking the span adjusting cylinder by rotating the span adjusting cylinder by the rotating handle to expand or contract the distance between the engaging portions of the first and second supporting members. It is configured so as to define the interval between two frame bones facing each other when welding the frame.

[Action]

In FIG. 1, the span is fixed in a state in which the first support member 3 and the second support member 4 screwed into the left-hand thread portion 2a and the right-hand thread portion 2b at both ends of the span adjusting cylinder 2 are fixed so as not to rotate. When the turning handle 1 provided in the central portion of the adjusting cylinder 2 is turned rightward, for example, both supporting members 3 and 4 simultaneously move outward in accordance with the law of the feed screw. The distance L between 5 and 6 becomes long.

Therefore, the two vertical frame bones 7a facing each other of the frame 7 are stretched by the support members 3 and 4 during welding, and the bending of the vertical frame bones 7a due to heating and cooling is prevented.

〔Example〕

Hereinafter, an embodiment of the frame bone bending preventing jig of the present invention will be described in detail with reference to FIG.

The span adjusting cylinder 2 is provided with a left-hand threaded portion 2a at one end inner peripheral portion and a right-handed screw portion 2b at the other end inner peripheral portion of a cylindrical material made of metal such as iron or stainless steel, and has a shaft at the center thereof. Through hole 2c is formed in the direction orthogonal to the direction, and span adjustment cylinder 2 is formed in the hole 2c.
It is configured by providing a rod-shaped handle 1 for rotating the.

The first support member 3 has a left threaded portion 3a that can be screwed into the left threaded portion 2a of the span adjustment barrel 2 on the outer circumference of a round bar made of iron or stainless steel, and the span adjustment barrel 2 in the screwed state.
An engaging groove 5 into which a vertical frame bone 7a is fitted is provided at one end projecting more.

The second support member 4 has a right-hand threaded portion 4a which can be screwed into the right-handed threaded portion 2b of the span adjustment barrel 2 on the outer circumference of a round bar of iron or stainless steel, and the span adjustment barrel 2 is screwed into the right-handed threaded portion 4a. An engaging groove 6 into which a vertical frame bone 7a is fitted is provided at one end projecting more.

The first supporting member 3 is screwed into the left screw portion 2a of the span adjusting cylinder 2 and the second supporting member 4 is screwed into the right screw portion 2b to form the frame bending preventing jig of the present invention.

Next, an example of use of the frame bone bending preventing jig will be described.

Referring to FIG. 1, first, the first support member 3 and the second support member 4 are fixed so as not to rotate when the handle 1 of the span adjusting cylinder 2 is rotated, and in this state, the handle 1 is rotated to the right. Both supporting members 3 and 4 are further projected so as to be sent out from the span adjusting cylinder 2, and the distance L between the engaging grooves 5 and 6 is set to two vertical frame bones 7a of the frame 7 shown in FIG. Adjust to the inner distance U.

Then, in the engaging grooves 5 and 6 of both the supporting members 3 and 4, the vertical frame bone of the frame 7 is formed.
The vertical frame bones 7a are fixed by fitting the respective 7a.

After this, the joint between the horizontal frame bone 7b and the vertical frame frame 7a is welded. The bending of the vertical frame frame 7a due to heating and cooling at this time is mechanically fixed by fixing with the frame frame bending prevention jig of the present invention. To be prevented.

After the welding work is completed, the jig is removed by rotating the handle 1 in the opposite direction, that is, to the left and pulling the first supporting member 3 and the second supporting member 4 into the span adjusting cylinder 2.

In the above embodiment, the structure in which the threaded portion is provided on each of the inner peripheral surface of the span adjustment cylinder and the outer peripheral surface of the support member is shown, but this is of course possible even in the opposite relationship.

[Effect of device]

As described above, according to the present invention, it is possible to flexibly cope with the welding production of a plurality of types of frames having different intervals between the frame bones by only preparing one type of frame bone bending preventing jig, and to perform welding welding. There are extremely economical advantages such as easy handling of the ingredients.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of the present invention, FIG. 2 is a plan view showing an example of a framework, and FIG. 3 is a perspective view showing a conventional frame bone bending preventing jig. In the figure, 1 is a turning handle, 2 is a span adjusting cylinder, 2a is a left-hand threaded portion, 2b is a right-handed threaded portion, 2c is a through hole, 3 is a first support member, 3a.
Is a left-hand threaded portion, 4 is a second support member, 4a is a right-handed threaded portion, 5 and 6 are engaging portions, L is a distance between the engaging portions 5 and 6, and 7a is a vertical frame of the framework. .

Claims (1)

[Scope of utility model registration request] 1. A jig for preventing frame-bending of a frame (7) used for welding for frame-bone joining of a frame (7) comprising at least four frame-bones (7a, 7b), which is provided at the central portion. A span adjusting cylinder (2) provided with a left threaded portion (2a) on one end side of the cylinder with the moving handle (1) attached and a right threaded part (2b) on the other end side, and the span adjusting cylinder (2). ) Is provided so as to be screwed with the left screw part (2a) so as to be movable in the axial direction of the adjusting cylinder, and has an end part for engaging with the frame bone (7a) of the frame (7). 5) provided with a first support member (3) and a right-hand threaded portion (2b) of the span adjustment tube (2) so as to be movable in the axial direction of the adjustment tube, and A second support member (4) having an engaging portion (6) for engaging the frame bone (7b) of the framework (7) at an end thereof. Span adjustment barrel said by rotating the (2) first and second support members (4)
The distance between the engaging parts (5, 6) of the frame is expanded or contracted to define the distance between two frame bones (7a) facing each other when the frame (7) is welded. Jig for preventing frame bending of the frame.