KR101965165B1 - Wood bending device - Google Patents

Abstract

Disclosed is a hardwood bending device. The hardwood bending device is configured to form a hardwood piece of solid wood into a curved wooden piece for use as a part of furniture in the cabinetwork producing indoor furniture pieces, such as lighting fixtures, mirrors, and tables, or as a component of other finished products. The hardwood bending device utilizes a combination of wet-type and dry-type methods for bending a hardwood piece, and thus enables the mass production of wooden pieces with a uniform thickness as well as the production of products of uniform quality. Also, the hardwood bending device requires relatively low costs and equipment costs, and furthermore enables products with various shapes to be produced by using a single device, by replacing only a part of the device. According to an embodiment of the disclosure, the hardwood bending device comprises: a frame part having a structure in which a plurality of vertical frames and horizontal frames are interconnected to form a space therein; a support part provided on the upper surface of the frame part to fix a board-shaped wooden piece to be bent, so as to prevent the wooden piece from inadvertently departing from the frame part while being bent; and a forming part provided on the frame part spaced apart from the support part to press two side surfaces, in a thickness direction, of the wooden piece fixed to the support part, to bend the wooden piece to have a predetermined radius of curvature.

Description

[0001] WOOD BENDING DEVICE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood bending apparatus and, more particularly, to a wood bending apparatus that can be used as a material for a lighting apparatus by molding a single wood as a curved wood.

Unless otherwise indicated herein, the contents set forth in this section are not prior art to the claims of this application and are not to be construed as prior art to be included in this section.

In general, lighting products using wood have limitations in design due to difficulties in product realization and limitation of materials, and quality products require know-how of production.

However, even a skilled engineer has difficulty in mass-producing the wood as a curved shape and having the same size as the desired design.

For this reason, a molding method using a bending device for molding a wood into a curved shape is used. As the bending technique, a thin plywood is laminated and bonded by using an adhesive, and a method of molding by pressing while generating high- Bending) are mainly used.

Dry bending is a method of dividing a wood into several parts and processing each of the divided pieces of wood to conform to a part of the final curved shape to obtain a desired final shape of the curved shape of the wood. Korean Unexamined Patent Publication No. 1996-0031091 A method for manufacturing the same, and a molding method using the same.

In the above-described document, a plurality of overlapping upper and lower formed bodies are fixed by fixing means, in which a plurality of plate-shaped upper and lower formed bodies each having a forming surface of a shape conforming to an opposing surface are formed so as to have a molding surface of a predetermined width It consists of a pair of upper and lower wooden types.

The shaping of the curved wood according to the above-mentioned configuration is carried out by cutting the central part of the rectangular wood plate by ruta to form a desired molding surface and separating the wood plate material to produce upper and lower formed bodies having corresponding molding surfaces Forming a plurality of upper and lower formed bodies in the same manner as described above; and overlapping the plurality of upper and lower formed bodies so that the width of the formed surfaces is increased, And fixing them with screw means to fabricate the upper and lower wooden molds.

In this case, in the above-mentioned document, placing the upper and lower wooden molds on the pressing means and placing at least one plate material to be molded between the molding surfaces, molding the plate material by pressing the upper wooden mold at a predetermined pressure, And a step of holding the pressed state of the plate material for a predetermined time to completely remove the moisture of the plate material and fixing the molding. In the moisture removing step, a conductor is interposed between the upper and lower wooden plates and the plate material, .

Therefore, the production time of the wooden type which is the molding means of the curved-like wood is drastically shortened, the cost is greatly reduced, the power consumption is reduced when the moisture removing means is used at the time of molding and it is economical. It is possible to recycle the tree of the present invention.

On the other hand, in a method other than dry bending, a method of manually bending (wooden bending) is used by using a jig or a frame that keeps the shape after the wood is sucked and kept at a high temperature for a certain period of time.

However, as mentioned above, the high-frequency pressing method, dry method, is a method of laminating plywood with an adhesive because the raw material is wood but it is somewhat heterogeneous in terms of the texture of the wood and the representation of the wood, It takes a lot.

The wet type is more natural because it can use the wood itself when a single log is used, and is environmentally safe because it does not use an adhesive, but mass production is impossible because of its mass productivity and efficiency.

In particular, the conventional method has a disadvantage in that it can not be satisfied with a product even if it bends a single piece of wood after the bending.

Accordingly, it is possible to produce a uniform quality product by using a facility capable of mass production of a single predetermined thickness of wood with the above-mentioned problems being complemented, and it is possible to produce a product having a relatively low cost and facility cost, When the parts are changed and used, a device capable of producing various shapes of products with one equipment is needed.

1. Korean Registration Practice No. 20-0229967 (Apr. 27, 2001) 2. Korean Registration Practice No. 20-0259356 (December 18, 2001)

The present invention provides a wood bending apparatus that can be used as a material for a lighting apparatus by molding a single wood as a curved wood.

The present invention provides a wood bending apparatus capable of mass production of a single wood having a uniform thickness by applying bending of a wood with a mixture of wet and dry, and to produce a product of uniform quality.

It is an object of the present invention to provide a wood bending apparatus capable of producing various shapes of products by using a single equipment when the cost or facility cost is relatively low and a part of the equipment is shared and only a part of the equipment is used.

According to an embodiment of the present invention, there is provided a frame structure comprising: a frame portion having a structure in which a plurality of vertical frames and horizontal frames are interconnected to form a space therein; and a plate- And a shaping portion provided in the frame portion spaced apart from the support portion and configured to press the both sides of the wood in the thickness direction to form a curved shape so as to have a predetermined radius of curvature, The present invention provides a wood bending apparatus comprising:

According to an embodiment of the present invention, the support portion includes a first support for supporting one side end surface and a lower surface of the wood, a second support member for supporting the other end side surface and the lower surface of the wood, And a guide roller provided between the first support and the second support to support one side of the wood received in the second support.

According to an embodiment of the present invention, the shaping portion is provided on the frame portion, spaced apart from the wood on one side in the thickness direction, of both sides of the wood fixed to the support portion, and presses one side of the wood to have a curved shape with a preset radius of curvature A first molding formed on the other side of the first molding to be opposite to the first molding to be spaced apart from the other side of the wood in the thickness direction and pressed against the other side so as to have a predetermined curvature radius And a second molded body for molding.

According to an embodiment of the present invention, the first formed body includes: a support base fixed to an upper surface of the frame portion; a rotation shaft rotatably provided through the support base; And a rotating cylinder provided at a lower portion of the frame portion for rotating the rotating shaft.

According to the embodiment, the second formed body includes: a pressurizing cylinder fixed to the upper surface of the frame portion; and a second pressurizing cylinder which reciprocates back and forth through a piston action of the pressurizing cylinder, And is pressed against the other side surface to be molded.

According to an embodiment of the present invention, the guide roller is movably provided in the frame so as to support the thickness of the wood.

According to the embodiment, a control unit and an electric panel for operating and controlling the molding unit are provided at one side of the frame unit

The above-mentioned wooden bending apparatus can be used as a single piece of wood, which is formed of a curved wood to be used as a lighting fixture, furniture for interior use such as a mirror or a lathe, furniture using some parts of furniture, .

It is possible to mass produce a single uniform thickness of wood by applying the bending of the wood which is a mixture of wet and dry, and to produce the product of uniform quality.

Cost and facility cost are relatively inexpensive, and a part of the equipment is shared, and only a part of the parts is changed and used, it is possible to produce various shapes of products with one equipment.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a plan view of a lumber bending apparatus according to an embodiment of the present disclosure;
2 is a front view of a wood bending apparatus according to an embodiment of the present disclosure;
Figs. 3 to 5 are a series of drawings for explaining a molding method for bending a log using a log bending apparatus according to an embodiment of the present disclosure; Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like numbers refer to like elements throughout.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: FIG. 1 is a perspective view of a wood bending apparatus according to an embodiment of the present invention; , Hydraulic pressure, pneumatic pressure, piston movement, etc., will be briefly described or omitted.

FIG. 1 is a plan view of a lumber-bending apparatus according to an embodiment of the present disclosure, and FIG. 2 is a front view of a lumber-bending apparatus according to an embodiment of the present disclosure.

Referring to FIGS. 1 and 2, a lumber-bending apparatus according to an embodiment of the present disclosure includes a frame portion 10, a support portion 20, and a molding portion 30.

The frame part 10 is provided as a structure in which a plurality of vertical frames 11 and horizontal frames 12 are interconnected to form a space therein.

Specifically, the frame portion 10 is provided as a structure by connecting the vertical frame 11 and the horizontal frame 12, which use a rod-like profile having a substantially rectangular cross-sectional shape, horizontally and vertically to each other.

At this time, the inside of the frame part 10 can be assembled by connecting a plurality of vertical frames 11 having different lengths to the horizontal frame 12 so as to form a plurality of divided spaces.

Since the frame part 10 is provided as a profile structure for interconnecting the vertical frame 11 and the horizontal frame 12, it can be easily installed and removed, and can be provided as a rigid structure by an internal geometric shape .

The frame portion 10 of the present disclosure may be provided in various shapes, including but not limited to a hexahedron, and a board frame 13 is provided on the upper surface to block the opened upper end.

At this time, the board frame 13 is provided at both the lower and the upper side as well as the upper side, so that the board frame 13 can be used for protecting the apparatus and the like installed inside by blocking the inside thereof. A transparent window made of transparent material, or the like.

The upper end of the vertical frame 11 corresponding to each corner of the hexahedron of the frame portion 10 is provided with a hook or the like for connecting to a crane or the like for transporting the frame portion 10, A wheel 14 for facilitating the positional movement in a place where the motorcycle 1 is mounted and a fixing member 15 for fixing the motorcycle 1 can be drawn out through a screw or the like while being inserted.

On the other hand, a control unit and an electric panel for operating and controlling the forming unit 30 are provided at one side of the frame unit 10. Through this, it is possible to set according to various conditions such as the shape to be molded of the wood 1 and the pressure, temperature, time, molding process and so on for forming. Here, the control unit including the controller unit and the electric panel can be applied to a variety of settings, interfaces, and usage environments to be implemented as well as the above-mentioned conditions through program and design change by a typical technician in the field of the lumber bending apparatus to which the present disclosure belongs Detailed description is omitted.

The supporting part 20 is mounted on the upper surface of the frame part 10 and fixes the wooden piece 1 of the plate shaped body to be formed into a curved shape so as not to be released to the outside of the frame part 10 during molding.

The support 20 for this purpose is composed of a first support 21, a second support 22 and a guide roller 23.

The first support body 21 has a "C" shaped cross-sectional shape having a longitudinally cut-away groove formed at its inner center, and supports the side surface and the lower surface of the wood 1 at one end in the longitudinal direction. To this end, the opposite side faces are coupled to the frame part 10 such that the cut-out groove faces upward, so that the plate-shaped wood 1 can be slid forward along the cut groove in the longitudinal direction, .

The second support body 22 is spaced apart from the first support body 21 and supports the other side surface and the lower surface in the longitudinal direction of the wood 1. The second support 22 for this purpose is composed of a moving support 221, a pressing piece cylinder 222 and a pressing piece 223.

The movable support 221 of the second support body 22 is formed to have a shape of a " C "shape having an incision groove formed at its inner center like the first support body 21, (10) so as to face the frame (21). Through this, one end of the wood 1 entered through the first support body 21 comes into the cutting groove and comes into contact with the inner side surface having the cutout groove formed therein, thereby regulating the longitudinal movement, 1) to be positively positioned.

Here, the movable support 221 of the second support body 22 is positioned on the upper side of the frame portion 10, and the first formed body 31 is rotated in the rotation direction of the first formed body 31 at the same time when rotating, To the first molded body 31 so as to be capable of being formed. When the first molded body 31 is rotated for molding, the wooden body 1 is rotated simultaneously with the wooden body 1 accommodated therein and the wood 1 supported on the first molded body 31 and the guide roller 23 is rotated in the rotating direction The side surfaces of the first molded body 31 gradually come into contact with the side surfaces gradually from the end side to the inner side so that bending can be performed as a side surface shape of the first formed body 31. [

The pressing piece cylinder 222 is provided as a normal cylindrical body having one side connected to the movable support member 221 so as to be perpendicular to the longitudinal direction of the wooden piece 1 so that the end portion of the pressing piece cylinder 222 facing the wooden member 1 is reciprocated back and forth .

The pressing piece 223 is provided as a plate, one side of which is coupled to the pressing piece cylinder 222, and the other side of the pressing piece 223 is brought into close contact with the wooden plate 1 and a tightening plate 2 described later. The wood 1 and the tightening plate 2 supported by the first support body 21 and the second support body 22 are firmly fixed to the second support body 22 and are firmly fixed.

The guide roller 23 is provided between the first support body 21 and the second support body 22 and supports one side of the wooden body 1 accommodated in the second support body 22.

The roller body that is rotatable on the shaft center provided in the frame portion 10 through the center of the guide roller 23 is provided so as to be in contact with the side surface portion to be inserted into the second support body 22 through the first support body 21 So that the supply of the wood 1 can be performed smoothly.

At this time, as shown in the figure, the guide rollers 23 are disposed in the second molded body 32 so that the centers of the first molded bodies 31 of the molded body 30 will be arranged in a straight line, So that the wood 1 is supported on both sides together with the first formed body 31 so as to be stably supported so as not to cause an error in processing through the forming unit 30 do. Particularly, when the first forming part 30 described below is rotated simultaneously for forming the wood 1, the first forming part 30 can be rotated and supported at the same time without friction or engagement, thereby improving the completeness of the processing.

Here, the guide roller 23 is provided so as to be movable in the frame part 10 so as to be supported by the thickness of the wood 1. For this purpose, a cutout groove is formed in the frame part 10, The shaft center of the guide roller 23 is moved to correspond to the thickness of the wood 1 and fixed by a nut or the like. Of course, it is also possible to automatically recognize the thickness of the wood 1 by connecting a motor and a sensor through a design change as well as a manual method as described above, and to adapt the position so that the guide roller 23 is automatically moved in accordance with the thickness. It will be obvious to one of ordinary skill in the art to which the disclosure belongs.

The forming part 30 is installed on the upper part of the frame part 10 spaced apart from the supporting part 20 so that the wood 1 fixed to the supporting part 20 is pressed on both sides in the thickness direction so as to have a radius of curvature of a predetermined dimension To be formed into a curved shape.

The molding portion 30 is composed of the first molding body 31 and the second molding body.

The first molded body 31 is provided on the frame portion 10 and is spaced apart from the wood 1 on one side in the thickness direction of both sides of the wooden body 1 fixed to the support portion 20 and has a predetermined radius of curvature One side is pressed and formed so as to have a curved shape.

The first molded body 31 includes the support base 311, the rotating shaft 312, the rotating body 313, and the rotating cylinder 314.

The supporting base 311 is fixedly installed on the upper surface of the frame portion 10 by bolting or the like, with a hollow portion to which a rotating shaft 312 to be described later is inserted.

The rotary shaft 312 is provided in a rod shape which is rotatably supported by a support 311 through a hollow portion of the support 311.

The rotary body 313 is extruded at the upper end of the rotary shaft 312 provided on the support 311 and rotated simultaneously with rotation of the rotary shaft 312 to press the one side of the wooden body 1 to be molded.

As shown in the drawing, the rotating body 313 has a semicircle-shaped side surface having a long circumference among two semicircles cut at a position spaced apart from the diameter of the circle by a virtual straight line parallel to the diameter of the circle And is provided in a semicircular cylinder. In this rotating body, a central portion corresponding to the center of the circle is extrapolated to the rotating body 313, and a rounded convex side surface is used to rotate the rotating body 313 so that one side of the wooden body 1 is curved in a predetermined radius of curvature So as to be molded.

The rotating body 313 is provided to form the wooden body 1 to have a simple curved shape by being provided with a semicircular circumference having a rounded side as described above, but the present invention is not limited to this, It is needless to say that it is possible to have various side shapes which can have a geometrical shape within a range in which bending is possible depending on the type and condition of the wave or wood 1, as well as the semicircular cylinder having the concave and convex portions .

The rotating cylinder 314 is provided on the lower surface of the frame unit 10 as shown in FIG. 2 so that the rotating shaft 312 passing through the supporting base 311 is rotated to allow the rotating body 313 to rotate.

The end of the rotary cylinder 314 which reciprocates back and forth through the piston action is provided to be in contact with the side surface of the end portion of the rotating body 313 provided in the support base 311 through the frame portion 10, And has a rack-and-pinion gear coupling structure that allows the rotating body 313 to rotate when it is moved. Here, the rotating cylinder 314 may be a conventional cylindrical body that can perform a piston action by using hydraulic pressure or pneumatic pressure. In addition to the above-described rack-and-pinion gear combining method, various connecting structures It is needless to say that the rotating body 313 may be rotated.

The second molded body 32 is provided on the frame portion 10 so as to be spaced apart from the wood 1 on the other side in the thickness direction of the both sides of the wooden body 1 so as to face the first molded body 31, The other side surface is pressed and formed so as to have a radius of curvature.

The second molded body 32 is composed of the pressing body cylinder 321 and the pressing body 322.

The pressurizing cylinder 321 is provided in a conventional cylindrical body such as a rotary cylinder 314 fixed to the upper surface of the frame portion 10 and rotating the rotary shaft 312. [

The pressing body 322 is provided on the end of the pressing body cylinder 321 and is reciprocated back and forth through the piston action of the pressing body cylinder 321. The pressing body 322 is provided on the opposite side of the wooden body 1 which is in close contact with the first forming body 31 And then pressurized to be molded.

The pressing body 322 is provided with a cylindrical body having a rounded concave side surface corresponding to the rounded convex side surface of the rotating body 313 described above so that the operation of the pressing body cylinder 321 causes the second supporting body 22, Bending by the first molded body 31 and supported on the opposite side surface of the first bending wood 1 through the bending by the first molded body 31. The first and second molded bodies 31 and 32, To be formed into a curved shape having a predetermined curvature radius.

The pressing body 322 is provided with a plurality of cable insertion holes 323 on one side thereof so that the recessed side can apply heat to the wood 1 for forming, The cable insertion hole 323 is provided in the rotating body 313 of the first formed body 31 at the same time, though not shown in the present disclosure.

3 to 5 are a series of drawings for explaining bending a log using a log bending apparatus according to an embodiment of the present disclosure.

The method of lumbering of the present disclosure will be described with reference to Figs. 1 and 3 to 5.

First, the wood 1 to be processed is prepared.

Here, it is preferable that the wood (1) is made of hardwood, which is relatively soft and ductile and has a dense structure.

Thereafter, the wood 1 is immersed in water for a certain period of time, and when the immersion is completed, the wood 1 is put in a steaming apparatus and is strained for a predetermined time.

Here, it is also possible to carry out only the immersion and steaming steps without performing the order of the immersion and steaming steps, and then perform molding through the bending apparatus of the present disclosure described later.

Then, through the control section including the controller and the electric panel of the present disclosure, a dimension value for a desired radius of curvature and a time, temperature and pressure for molding are set.

Thereafter, the wood 1 and the thin plate-like fastening plate 2 having elasticity are superimposed to push the end portion of one end in the longitudinal direction from the first support body 21 and push the entered end portion until it is brought into close contact with the second support body 22 To be fixed to the support 20 as shown in FIG.

Here, when the forming portion 30 of the fastening plate 2 is machined, the side surface of the wooden piece 1 is supported to compensate for cracking and rupture of the wooden piece 1 from an external force due to molding.

Thereafter, when the apparatus is operated, the pressing piece 223 is operated to press the double-ply wood 1 and the fastening plate 2 to be fixed as shown in Fig.

Thereafter, the rotating body 313 is rotated by a predetermined rotation range while heating the wood 1, so that the first molded body 31 is rotated with a predetermined curvature with respect to the wood 1 as shown in Fig. 4 Bend.

Thereafter, the pressing body 322 of the second formed body 32 advances and comes into contact with the opposite side of the wood 1, and is heated to a predetermined pressure and temperature.

Thereafter, the first forming body 31 and the second forming body 32 are fixed, and the creep bending operation is continued for a predetermined time, thereby bending a desired dimension without damaging the wooden body 1.

In order to remove the product of the curved wood from the apparatus after completing the bending operation according to the above-described procedure, the above-described procedure is performed in the reverse order.

The above-mentioned wooden bending apparatuses can be manufactured by molding a single wooden timber into a curved shape to produce various kinds of furniture such as lighting fixtures, furniture for interior use such as mirrors and shelves, furniture using some parts of furniture, It is possible to mass produce a single uniform thickness of wood by applying the bending of the wood which is a mixture of wet and dry and to produce a uniform quality product, If a part of the equipment is shared and only a part of the equipment is used, the equipment can be manufactured in a variety of shapes with one equipment.

It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It is not limited to the embodiment.

1: Wood 2:
10: frame part 11: vertical frame
12: Horizontal frame 13: Board frame
14: wheel 15:
20: Support part 21: First support part
22: second support body 221:
222: pressure piece cylinder 223: pressure piece
23: Guide roller 30: Molded part
31: First molded body 311: Support
312: rotating shaft 313: rotating body
314: Rotary cylinder 32: Second molding body
321: pressure body cylinder 322: pressure body
323: Cable insertion hole

Claims (7)

A frame portion having a structure in which a plurality of vertical frames and horizontal frames are interconnected to form a space therein;
A supporting part installed on the upper surface of the frame part to fix the wooden plate material to be formed into a curved shape so as not to be detached to the outside of the frame part during molding; And
And a molding part installed in the frame part spaced apart from the support part and pressing the both sides in the thickness direction of the wood fixed to the support part to form a curved shape so as to have a predetermined radius of curvature,
The support portion includes a first support for supporting one side surface and a lower surface of the wood member, a second support member for supporting the other side surface and the lower surface of the wood member apart from the first support member, And a guide roller provided between the second support bodies and supporting one side of the wood received by the second support bodies.
delete [2] The apparatus according to claim 1,
A first molded body which is spaced apart from the wood at one side in the thickness direction among the opposite side surfaces of the wood fixed to the support portion and which is provided in the frame portion and presses the one side so as to have a curved shape of a predetermined radius of curvature, And a second molded body which is formed on both sides of the wood opposite to the first molded body so as to be spaced apart from the wooden body in the thickness direction and pressurized on the other side so as to have a curved shape of a predetermined radius of curvature, A bending device for a wood bobbin.
4. The image forming apparatus according to claim 3,
A rotatable shaft extruded on the rotatable shaft and rotated simultaneously with rotation of the rotatable shaft to pressurize one side of the timetable; And a rotating cylinder provided below the frame for rotating the rotating shaft.
4. The image forming apparatus according to claim 3,
A pressing member cylinder fixedly mounted on the upper surface of the frame portion and a pressing member which is reciprocated forward and backward through a piston action of the pressing member cylinder and which is pressed against the other side surface of the wood which is in close contact with the first forming member, And a bending device for bending the wood.
The method according to claim 1,
Wherein the guide roller is provided to be movable in the frame portion so as to be able to support the wood according to the thickness of the wood.
The method according to claim 1,
And a control unit and an electric panel for operating and controlling the forming unit are provided on one side of the frame unit.

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