JPH028566Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bending device for a bar-shaped material, and in particular, the invention relates to a bending device for a bar-shaped material, and in particular, a device that bends a bar-shaped material into a V-shape or This invention relates to bending and folding to form a U-shape.

[Conventional technology]

In a concrete block or steel factory, especially in the iron casting process where molten pig iron is passed through a pig iron casting machine to cast so-called "sea cucumbers", the molten pig iron grains that are scattered when transferring molten pig iron into a casting pan are collected and disposed of below the iron casting machine, BACKGROUND OF THE INVENTION In various types of heavy objects such as hot metal blocks that have been solidified to a certain size, a hanger is generally embedded and solidified integrally at the base of the block for lifting or other cargo handling.

These suspensions for hanging blocks are made of steel bars formed into various shapes.

One of the simplest and most powerful of these stakes is the one that is often used, which has a considerable strength due to the physical nature of the symmetry in which it is used. It is required that the steel bar has the following characteristics.

Therefore, in order to create a 〓-shaped suspension from such a strong steel bar, an engaging stud is planted on the base, the steel bar is engaged with this, and an appropriate lever is used. Alternatively, the suspension is formed into a predetermined shape by sequentially bending it while heating if necessary, or by using a complicated press-bending forming device.

[Problems with conventional technology]

However, such devices are complex in structure, expensive to manufacture, and inconvenient to handle.

The object of the present invention is to provide a folding device for hanging buckle forming which is simple and extremely easy to handle.

[Means for Solving the Problem] In order to achieve the above object, the present invention provides a bending device with a bending fulcrum whose lower surface abuts the workpiece bar on one side of the base, and A pair of bar-shaped bending guide frames each consisting of a base guide frame whose one end on the bending fulcrum side is rotatably supported on a base, and a tip guide frame connected to the base guide frame by a joint. A lifting guide shaft is provided symmetrically around the bending fulcrum, formed on the upper surface of the guide frame to support the workpiece rod, and having an axis passing through the bending fulcrum and orthogonal to both guide frames on the same base. The lifting body is movably engaged with the guide shaft, and on both sides of the guide shaft, a pair of lifting rods consisting of upper and lower support rods connected by a freely bendable joint are installed symmetrically with respect to the guide shaft. The upper end of the upper support rod of each lifting rod is pivotally supported on the corresponding side of the elevating body, and the lower end of the lower support rod is fixed at an arbitrary angle to the corresponding tip guide frame. With this configuration, the rod-shaped body can be bent into a V-shape or a U-shape with the middle portion leaving straight portions at both ends.

〔Example〕

Hereinafter, the present invention will be specifically explained based on embodiments shown in the accompanying drawings.

FIG. 1 shows a front view of the bar-shaped material bending device of the present invention, and FIG. 2 shows an operational diagram of the device.

In the figure, reference numeral 1 denotes a base, and a bending fulcrum 2 is firmly protruded from one side of the base.

The bending fulcrum 2 provided on the base is not necessarily limited to one as in this embodiment, but may vary depending on the shape of the bending point, such as whether the bending shape is V-shaped or U-shaped. 2 so that the shape becomes the corresponding shape.
More than one can be protruded as appropriate.

Reference numeral 3 denotes a guide shaft extending upward from the base 1 through the bending fulcrum 2, and an elevating body 4 is attached to the guide shaft 3 so as to be slidable up and down.

Reference numerals 5 and 5' indicate lifting rods disposed on both sides of the guide shaft 3, and the lifting rods 5 and 5' have joints 6 and 6' in the middle, and upper support rods 5a and 5a' and lower support rods 5a and 5'. It consists of support rods 5b and 5b'. Upper support rod 5a, 5
The upper end of a' is rotatably connected to the corresponding side of the elevating body 4. The other ends of the lower support rods 5b, 5b' have one end rotatably attached to rod-shaped bending guide frames 7, 7 symmetrically below both sides of the bending fulcrum 2 by mounting fulcrums 12, 12. It is fixed at the other horizontal end of '.

The rod-shaped material bending guide frames 7, 7' have joint portions 8, 8' at their intermediate portions, respectively, and are composed of base guide frames 7a, 7a' and tip guide frames 7b, 7b'. The rod-shaped material bending guide frames 7, 7' have a workpiece rod support surface formed on the upper surface thereof. Also, the ends of the tip guide frames 7b, 7b' and the lower support rods 5b, 5 of the lifting rods 5, 5'
b' are fixed at arbitrary angles.

Lower lifting support rods 5b, 5b' and tip guide frame 7b,
The bonding angle with 7b' is the bending angle θ at the bending fulcrum 2.
It should be arbitrarily selected depending on the bending angle θ, and by making the mounting angle as small as possible, the amount of movement of the elevating body 4 can be reduced as the bending angle θ becomes smaller.

Also, the base guide frames 7a, 7 of the bending guide frames 7, 7'
The respective lengths of a' and the tip guide frames 7b, 7b' are not particularly limited in the present invention, and can be selected depending on the length between the bent portions of each part of the molded product.

When the base 1 is fixed to the workshop base, the movement of the elevating body 4 is carried out by lifting the elevating body 4 using a suitable lifting device such as an overhead crane or a chain block (not shown), or The elevating body 4 can also be moved up and down by a cylinder device provided along the guide shaft 3.

In the above embodiment, an example was described in which the bending fulcrum 2 and the bar-shaped material bending guide frames 7, 7' were provided on the side surface of the base 1, but the present invention is not limited to the above embodiment, and these bending fulcrums 2. Bar-shaped material bending guide frame 7, 7'
can also be provided on the top surface of the base 1.

The device of the present invention is constructed as described above, but the device of the present invention will be explained below by taking as an example the manufacturing of a hanging rod which is used by bending a steel bar and embedding it in a concrete block or tetra pot. We will discuss the effects of

The steel bar S to be processed, which has been cut to desired dimensions, is bent at the bending fulcrum 2 on the bar bending guide frames 7, 7', which are positioned linearly with the lifting body 4 lowered.
It is loaded so that it is directly under the Charged steel bar S
The two ends of the rod-shaped material are housed in tubular restraint bodies 10, 10' provided in the tip guide frames 7b, 7b' of the rod-shaped material bending guide frames 7, 7' so that the charging axis does not deviate. This is preferable in order to prevent sideways bending during bending of the workpiece.

Next, although not shown, when the elevating body 4 is pulled up in accordance with the arrow 11 along the guide shaft 3 provided in alignment with the axis passing through the bending fulcrum 2 using a displacement actuating device such as a cylinder device, the rod-shaped bending occurs. Guide frame 7,
7' is a lifting rod 5 connected to the elevating body 4;
5' to the base 1 symmetrically about the attachment fulcrums 12, 12', and pulled upward in the figure. Therefore, the steel bar S to be processed is bent into a V shape around the bending fulcrum 2.

Also, both ends of the steel bar S to be processed, that is, the tip guide frame 7
The parts located at b and 7b' are the lifting rods 5b and 5
b' and the tip guide frames 7b, 7b' are firmly connected at a certain angle, so the tip guide frames 7b, 7
b' is pulled up with the joints 8, 8' as boundaries before the elevating body 4 starts to be pulled up, converged in the direction of the guide shaft 3, and can be bent into a shape.

[Effect of idea]

As mentioned above, the bar bending device of the present invention has an extremely simple structure, is easily transportable and easy to operate, and can efficiently manufacture suspensions for lifting various blocks of desired shapes. .

[Brief explanation of the drawing]

FIG. 1 is a front view of a bar-shaped material bending device according to the present invention, and FIG. 2 is an explanatory view of the operation of the device according to the present invention. 1: base, 2: bending fulcrum, 3: guide shaft, 4: elevating body, 5, 5': lifting rod, 7, 7': bar-shaped material bending guide frame.

Claims (1)

[Scope of utility model registration request] A bending fulcrum is provided on one side of the base, the lower surface of which touches the workpiece bar, and below the bending fulcrum, one end of the bending fulcrum side is rotatably supported on the base with an interval between each base guide. A pair of bar-shaped material bending guide frames consisting of a frame and a tip guide frame connected to the base guide frame by a joint are installed symmetrically around the bending fulcrum, and the workpiece rod is supported on the upper surface of the guide frame. A lifting guide shaft is provided on the base having an axis that passes through the bending fulcrum and is orthogonal to both guide frames, and the lifting body is movably engaged with the guide shaft, and both sides of the guide shaft are A pair of lifting rods consisting of an upper support rod and a lower support rod connected by a bendable joint are arranged symmetrically about the guide shaft, and the upper end of the upper support rod of each lifting rod is connected to the lifting body. A bending device for a bar-shaped material, which is pivoted on the side where the rod is bent, and the lower end of the lower support rod is fixed at an arbitrary angle to the corresponding tip guide frame.