KR101628771B1 - Apparatus for cutting notch groove of headrest stay rod and method for cutting notch groove of headrest stay rod using the same - Google Patents

Abstract

The present invention provides a cutting and forming apparatus and a cutting punch group which perform cutting processing of a notch groove of a headrest pipe stay rod of a pipe or round bar shape or other shapes. The apparatus to cut and form the notch groove of the headrest stay rod includes: a mold part where a forming space is formed; a mounting part which is arranged in the forming space, and is mounted with a hollow pipe; and a cutting part which is installed in the mold part while being able to be lifted up, and forms the notch groove of a setting size by cutting the pipe discontinuously to extend a cutting area on the outer surface part of the pipe sequentially during lift-down. Moreover, the present invention provides a method to cut and form the notch groove of the headrest stay rod using the apparatus to cut and form the notch groove of the headrest stay rod.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a head-stay stay rod notch groove cutting molding apparatus and a head rest stay stay notch groove cutting method using the same.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a headrest stay rod notch groove cutting and molding apparatus, and more particularly, to a headrest stay rod notch groove cutting and forming apparatus using a cutting member which is discontinuously arranged and increases in size sequentially, The present invention relates to a head rest stay notch groove cutting apparatus and a head rest stay notch groove cutting method using the same.

Generally, a headrest for supporting a head of a passenger is provided at an upper end of a car seat. The headrest is mounted on a seat by a stay rod, and a plurality of fixed notch grooves are formed in the stay rod to selectively adjust the height of the headrest by selectively fixing and fixing the seat.

Conventionally, in order to form the fixed notch groove in the stay rod of the headrest, a method of forming the fixed notch groove by cutting one end of the stay rod was used.

However, when cutting the one end of the stay rod, the size of the notch groove to be machined may be inaccurate because of punching and cutting in one direction, and the remaining cutting residues remain in the notch groove, .

In addition, the conventional hollow pipe type stator notch grooving apparatus has a notch grooving method in which a plurality of notch grooves are cut by pressing a plurality of notches by using a dedicated equipment, and a notch grooved shape after pressing by 1STEP, And the groove is machined.

In addition, the notch groove molding method is composed of a complicated method of inserting or separating the core material after forming the notch groove by inserting the separated core material into the pipe and then using the upper punch.

A prior art related to the present invention is Korean Patent Registration No. 10-0489218.

An object of the present invention is to provide a cutting insert which is discontinuously disposed along a longitudinal direction of a cutting punch and which is formed so as to be sequentially increased in size so that notch grooves formed in the stay rod are sequentially cut and formed by a predetermined size And to provide a headrest stay rod notch groove cutting apparatus and a headrest stay rod notch groove cutting method using the same.

It is another object of the present invention to provide a cutting punch which is manufactured so that different cutting members are formed at different positions, and a notch groove having different shapes is formed by using one cutting punch in a plurality of notch shapes (half-moon, isosceles triangle, The present invention provides a headrest stay rod notch groove cutting and forming apparatus and a headrest stay rod notch groove cutting method using the same that can cut and shape a desired shape in one step (1STEP) in cutting a head stall rod notch groove cutting tool.

It is a further object of the present invention to reduce the cutting oil generated in the conventional cutting method and the cutting residues scattered during machining and to precisely and sequentially form a plurality of complicated and difficult notch groove shapes in one step The present invention provides a headrest stay rod notch groove cutting and forming apparatus and a headrest stay rod notch groove cutting method using the same.

In a preferred aspect of the present invention, the present invention provides a headrest stay rod notch groove cutting punch.
The headrest stay rod notch groove cutting punch is provided in a headrest stay rod notch groove cutting and forming apparatus so as to be movable in a first direction, and an outer side portion of the hollow pipe is discontinuously cut, And a punch body extending in the first direction, and a discontinuous discontinuous portion in a line along the first direction on an outer surface portion of one side of the punch body (321), the headrest stay rod notch groove cutting punch comprising: Wherein the plurality of unit cutting members having different sizes from each other are arranged such that the size gradually increases from the front of the punch body toward the rear of the punch body in the first direction And the plurality of unit cutting members are fixed in a non-rotatable state on the outer surface portion of the one side of the punch body Wherein a part of the plurality of unit cutting members disposed at the frontmost side in the first direction and a front end portion in the first direction of the punch body are provided with an outer surface of the one side of the punch body at a predetermined interval And the flat cutting member is moved in the first direction so that the flat cutting member is moved in a direction perpendicular to the outer surface of the pipe at the position where the notch groove is to be formed, And the cutting is performed by the plurality of unit cutting members.
In a preferred aspect, the present invention provides a headrest stay rod notch groove cutting and forming apparatus.

The headrest stay rod notch groove cutting and forming apparatus comprises: a mold section in which a molding space is formed; A seating part disposed in the molding space and on which a hollow pipe is seated; And a cutting processing unit which is installed on the mold unit so as to be able to move up and down and discontinuously cut so that the cutting area is sequentially extended on the outer side surface of the pipe when the pipe is lowered.

The cutting part 300 is provided on the mold part 100 so as to be movable up and down and has a plurality of unit cutting members 322a, 323a, and 324a formed on the outer circumferential surface thereof in the longitudinal direction discontinuously, And a lifting cylinder 310 installed on the mold part 100 for lifting and lowering the cutting punch 320.

The unit cutting members 322a, 323a, and 324a are sequentially formed to increase the size of the notch grooves 51 of the set size along the upper end of the cutting punch 320 from the lower end.

The shape of the cutting punch 320 is formed as a notch groove 51 having a shape including any one of or any other notch grooves such as a rectangular, semicircular, isosceles triangle, and the like.

The lowermost end of the cutting punch has planar cutting members 322b, 323b, and 324b and a plurality of cutting members 322a, 323a, and 324a that hold the tip of the pipe for preliminary molding at predetermined intervals.

The plurality of unit cutting members 322a includes a plurality of cutting members 322a along a longitudinal direction of the cutting punch 320 and a second cutting group 323 includes a plurality of cutting members 322a, The third cutting group 324 includes a plurality of cutting members 324a and is further formed at a position different from the outer surface of the cutting punch 320. [

It is preferable that the plurality of unit cutting members form a cutting group along the longitudinal direction of the cutting punch 320.

It is preferable that the cutting group is further formed at a position different from the outer surface of the cutting punch.

Preferably, the cutting group and each of the unit cutting members are detachable from the cutting punch.

The upper mounting body has a lower mounting body formed with a lower mounting groove on which the lower end of the pipe is mounted, an upper mounting body coupled to an upper portion of the lower mounting body and having an upper mounting groove on which the upper end of the pipe is seated, A pair of grip members for gripping both side ends of the upper and lower seating bodies to be coupled to each other, and a pair of grip members provided on the mold part, the pair of grip members having a pair of horizontal It is preferable to have a cylinder.

The cutting processing unit may not rotate the cutting punch, or may be provided with a rotating motor when it is necessary to rotate the cutting punch.

Preferably, the seating portion is formed with a through hole through which the cutting punch moves.

In the through hole, the cutting punch is preferably rotatable.

In another aspect, the present invention provides a headrest stay rod notch groove cutting method for forming a notch groove by using the headrest stay rod notch groove forming apparatus described above.

Conventional pipe notch grooving apparatuses have an environmental problem by using cutting residues scattered during cutting and cutting oil by using special equipment. Space utilization and investment cost are inevitably generated due to the use of dedicated equipment.

In addition, since the notch groove forming apparatus repeatedly inserts and separates the core material repeatedly after inserting into the pipe, it is inevitable that the work is difficult and the production amount is reduced. In addition, the notch groove shape is formed by post- The cutting process must be inevitably added.

The present invention improves the problems (reduction in production amount, securing of production space, pollution of working environment, etc.) occurring in the conventional notch grooving method, and cuts one step at a time to increase production amount, reduce investment cost using general purpose equipment, And the notch groove shape is successively cut by using a unit cutting member in a majority, so that the notch groove forming process is finely and precisely compared with the conventional technique.

The present invention relates to a cutting apparatus for cutting a workpiece by using a plurality of cutting members which are formed in one cutting and forming apparatus in one process and which are arranged discontinuously along the longitudinal direction of the cutting punch on the upper side of the mounting portion, The notch grooves formed in the rods are successively cut and formed so as to have a predetermined size, so that the notch groove shape is divided in the conventional various equipments, and the cutting is performed at 1STEP in a single facility to simplify the finishing process. So that the molding quality can be improved.

In addition, the present invention has an effect that different cutting members are formed at different positions in one cutting punch, and notch grooves having different shapes are formed by using one cutting punch.

1 is a view showing a structure of a headrest stay rod notch groove cutting and forming apparatus according to the present invention.
2 is a view showing an example of a cutting punch according to the present invention.
FIGS. 3A and 3B are views showing cutting punches of different shapes according to the present invention. FIG.
4 is a view showing the arrangement of the pipes according to the present invention.
5A and 5B are views showing a cutting state.
6A and 6B are views showing a notch groove forming state of a pipe to be cut.
7 is a view showing an example in which cutting groups of different shapes are formed in the cutting punch according to the present invention.

Hereinafter, a headrest stay rod notch groove cutting punch, a headrest stay rod notch groove cutting molding apparatus, and a headrest stay rod notch groove cutting method using the same will be described with reference to the accompanying drawings.

FIG. 1 is a view showing a configuration of a cutting punch, a cutting method and a cutting forming apparatus for cutting a headrest pipe or a round bar and other stator notch grooves according to the present invention, and FIG. 2 is a cross- Fig.

1 and 2, a headrest stay rod notch groove cutting and forming apparatus according to the present invention includes a mold 100, a seating part 200, and a cutting processing part 300.

In the mold part 100,

The mold part 100 according to the present invention is installed in the main body part 10, and a molding space a is formed therein.

A guide hole 110 for guiding the cutting punch 320 to be described later is formed at the upper end of the mold part 100.

In the seat part 200,

The seating part 200 according to the present invention is fixed to the main body part 10 so as to be positioned in the molding space a of the mold part 100.

The seating part 200 includes a lower seating body 210, an upper seating body 220, a pair of grip members 230, and a pair of horizontal cylinders 240.

A lower seating groove 211 on which the lower end of the hollow pipe 50 is seated is formed at an upper end of the lower seating member 210.

The lower seating body 210 may be fixed to the main body 10.

The upper seating body 220 is coupled to the upper end of the lower seating body 210 and the upper seating groove 221 is formed at the lower end of the upper seating body 220 to receive the upper end of the pipe 50.

The number of the upper seating grooves 221 and the lower seating grooves 211 may be formed corresponding to the number of the pipes 50 to be seated and formed at regular intervals.

The pair of grip members 230 grip both side ends of the upper and lower seating bodies 220 and 210 coupled to each other.

Each of the pair of horizontal cylinders 240 has an axis 241 which is expanded and contracted along the horizontal direction.

A grip member 230 is fixed to an end of the shaft 241 of each of the pair of horizontal cylinders 240.

Accordingly, depending on whether the axis 241 of each horizontal cylinder 240 is stretched or shrunk, each of the grip members 230 can be moved along the horizontal direction.

In addition, one or a plurality of through holes 201 penetrating the upper and lower seating bodies 220 and 210 along the vertical direction are formed.

Each of the through holes 201 is partially exposed to the upper and lower seating grooves 221 and 211.

That is, a part of the outer surface of the pipe 50 which is seated in the upper and lower receiving grooves 221 and 211 is exposed in the through hole 201.

A part of the outer surface of the pipe 50 exposed in the through hole 201 is a hole through which the cutting punch 320 is moved by the up-and-down movement of the cutting punch 320, The notch groove 51 can be formed.

In addition, the through-hole 201 may be formed to be capable of guiding the lifting and lowering of the cutting punch 320 and rotating.

The rotation is an operation that is rotated by using the cutting punch 320 as a rotation axis.

The cutting machining portion 300,

The cutting processing part 300 according to the present invention can be applied to the cutting punch 320, the elevating cylinder 310 and the rotating motor 330 and can also be used to raise the cutting punch 320 without the rotating motor 330 .

The purpose of configuring the rotary motor 330 is to increase the durability of the cutting punch 320 during continuous operation by inserting the same cutting punch 320 on the opposite side of the cutting member.

In some cases, a method of directly raising the cutting punch 220 without configuring the rotary motor 330 may be selected.

The lifting cylinder 310 is fixed to the main body 10 such that the lifting cylinder 310 is positioned above the mold 100.

The lifting cylinder 310 serves to move the cutting punch 320 up and down through external power.

One or more of the cutting punches 320 may be provided.

The upper end of the cutting punch 320 is connected to the lifting cylinder 310 and the lower end of the cutting punch 320 is arranged to be able to move up and down through the guide hole 110 of the mold part 100.

Therefore, the lower end of the cutting punch 320 is positioned in the molding space a of the mold part 100.

Referring to FIG. 2, the cutting punch 320 according to the present invention has a punch body 321 having a predetermined length or a shaft or other shape, and a cutting group 322.

The first cutting group 322 is composed of a plurality of unit cutting members 322a.

The plurality of unit cutting members 322a protrude from the outer surface of the punch body 321. [

The plurality of unit cutting members 322a are arranged to be spaced apart from each other by a predetermined distance along the longitudinal direction of the punch body 321.

Accordingly, the plurality of unit cutting members 322a are disposed discontinuously at the outer surface portion of the punch body 321. [

The plurality of unit cutting members 322a are formed to gradually increase in size from the lower end to the upper end of the punch body 321.

For example, the uppermost unit cutting member 322a may be formed to have a desired size or a size capable of forming a notch groove 51 having a predetermined size.

A planar cutting member 322b is formed at the lowermost end of the cutting member 322a.

When cutting, the planar cutting member 322b first fixes the tip end of the pipe 50 at the lower end and presses the tip of the pipe to form a shape. Then, the cutting punch 320, which is discontinuously inserted, The cutting member 322a is lowered (moved in the first direction) to process the groove while slipping the required shape.

At this time, the number of the cutting members 322a can be determined according to the number and depth of the notch grooves 51, and at least three or more of them can be provided, and up to 10 of the notch grooves 51 requiring precision can be discontinuously It has features that can be equipped.

The cutting punch 320 can rotate the cutting punch 320 by using a rotating motor when the cutting punch 320 descends to the shortest and when the cutting punch 320 is lifted.

FIGS. 3A and 3B are views showing cutting punches of different shapes according to the present invention. FIG.

As shown in FIGS. 3A and 3B, the cutting punch 320 may have another second and third cutting groups 323 and 324.

The second and third cutting groups 323 and 324 may be composed of a plurality of cutting members 323a and 324a and planar cutting members 323b and 324b such as rectangular and hemispherical shapes having different sizes.

Next, a headrest stay rod notch groove cutting forming method using the headrest stay rod notch groove cutting forming apparatus having the above-described configuration will be described.

Pipe seating phase

4 is a view showing the arrangement of the pipes according to the present invention.

A hollow pipe 50 is prepared. The pipe 50 may be formed of carbon steel or alloy steel and other materials.

The pipe 50 is seated in a lower seating groove 211 formed in the lower seating body 210.

The pipe 50 is inserted into the upper seating groove 221 formed at the lower end of the upper seating body 220 while the upper seating body 220 is coupled to the upper end of the lower seating body 210 Can be fixed.

Then, each of the pair of grip members 230 extends the shaft 241 of each horizontal cylinder 240, thereby fixing both side portions of the upper and lower seating bodies 220, 210 coupled to each other.

Accordingly, one or more pipes 50 may be secured to the upper and lower seating bodies 220, 210.

At this time, a part of the outer surface of the pipe 50 is exposed in the through hole 201.

Cutting step

FIGS. 5A and 5B are views showing a state in which cutting is performed, and FIGS. 6A and 6B are views showing a notched groove forming state of a pipe to be cut.

Referring to FIGS. 1, 4, 5A, and 6B, the lift cylinder 310 moves the cutting punch 320 fixed to the lower end by an external driving signal.

The cutting punch 320 enters the through hole 201 of the seating part 200 and the notch groove 51 is formed in the outer surface of the pipe 50 fixed to the upper and lower seating grooves 221 and 211 by cutting do.

In this case, while the cutting punch 320 is lowered, the planar cutting members 322b, 323b, and 324b positioned at the lowermost end first cut the first notch groove after fixing the outer surface of the pipe 50, The unit cutting members 322a, 323a, and 324a are similarly multi-cut by sequentially cutting the notch grooves so that the plurality of cutting members 322a, 323a, and 324a of a predetermined size form the notch grooves 51 at the same time.

For example, in the case of using the cutting punch 320 in which seven unit cutting members 322a, 323a, and 324a are disposed discontinuously in the punch body 321, the cutting punch 320 is lowered, 50 are sequentially cut seven times to form a notch groove.

Fig. 5A is a view showing a pipe in which the notch grooves are sequentially formed by the cutting surface, and Fig. 5B is a sectional view of cutting the pipe while the cutting punch descends and rises from the lower end.

At this time, it helps to remove the BURR of the cut-off notch groove portion at the time of descending.

In addition, in the present invention, since the size of the unit cutting members 322a, 323a, and 324a is gradually increased from the lower end to the upper end, the cutting area for cutting the outer surface of the pipe 50 is gradually cut do.

Therefore, in order to form the notched groove 51 having a predetermined size, the cutting area is sequentially extended and cut on the outer surface of the pipe 50 to increase the degree of the dimension of the notched groove 51 to be formed And the cutting surface can be formed so as to be uniform.

6A is a cross-sectional view showing a notch groove forming state of the pipe stay rod 50 in which cutting is performed.

6B is a plan view showing in detail the notch groove shape in which the pipe type stay rod 50 of the present invention is cut.

Since the notch forming grooves 51 have a large number of shapes (rectangular, double-sided, semi-circular, and various grooves) and many unit cutting members are machined while being pushed in the pipe during cutting, Fig. 5 is a view showing a shape that can be blocked.

7 is a view showing an example in which cutting groups of different shapes are formed in the cutting punch according to the present invention.

As shown in FIG. 7, cutting punch bodies 322 and 323 for forming notched grooves having different shapes are formed at different positions in the punch body 321 although some shapes are not shown.

For example, the first, second and third cutting groups 322, 323 and 324 correspond to the first cutting group 322 and the second cutting group 323. The third cutting group 324 is different from the punch body 321 As shown in Fig.

Here, each of the first, second, and third cutting groups 322, 323, and 324 may include a plurality of unit cutting members 322a, 323a, and 324a, and may be formed along the length direction of the punch body 321.

The cutting punch 320 'configured as described above may penetrate the through hole 201 of the seating part 200 and may be rotatable in the through hole 201.

When using such a cutting punch 320 ', any one of the first, second, and third cutting groups 322, 323, 324 may be connected to the outer surface of the pipe 50 by using the rotary motor 330 installed in the elevating cylinder 310. [ The part can be rotated to a position where it can be cut.

Hereinafter, the process of cutting the outer surface of the pipe and successively cutting the notch grooves of the set size is the same as that described above, so that the description thereof is omitted.

On the other hand, although not shown in the drawings, the cutting groups according to the present invention or the unit cutting members in the cutting group may be detachable from the outer surface of the punch body.

A method such as screw fastening or the like can be applied to the detachment method.

Therefore, when the cutting area is further extended or further reduced in the outer surface portion of the pipe, another unit cutting member may be installed and used.

According to the structure and the operation as described above, the embodiment according to the present invention is characterized in that a cutting member, which is discontinuously disposed along the longitudinal direction of the cutting punch and is formed so as to increase in size sequentially, And the molding quality can be improved by cutting and shaping them sequentially.

Further, in the embodiment of the present invention, different cutting members are formed in different positions in one cutting punch, and notch grooves having different shapes can be formed by using a plurality of cutting punches.

As described above, the headrest stay rod notch groove cutting and forming apparatus and the headrest stay rod notch groove cutting forming method using the same according to the present invention have been described. However, various modifications and variations are possible within the scope of the present invention. This is obvious.

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

It is to be understood that the foregoing embodiments are illustrative and not restrictive in all respects and that the scope of the present invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

10: body portion 50: hollow pipe 51: multiple notch groove shapes
100: mold part 110: guide hole 200: seat part
201: through hole 210: bottom seat body 211: bottom seat groove
220: upper seating body 221: upper seating groove 230: grip member
240: Horizontal cylinder 300: Cutting section 310: Lift cylinder
320, 320 ': cutting punch 321: punch body 322: first cutting group
323: 2nd cutting group 324: 3rd cutting group
322a, 323a, 324a: unit cutting members 322b, 323b, 324b:
330: Rotary motor

Claims (7)

(50) is discontinuously cut so that a predetermined notch groove (51) is formed in the pipe (50) so as to be movable in the first direction, In a head rest stator notch groove cutting punch 320,
A punch body (321) extending in the first direction,
And a plurality of unit cutting members (322a) discretely arranged in a row in the first direction on the outer surface of one side of the punch body (321) and different in size from each other,
The plurality of unit cutting members (322a) having different sizes are arranged so as to sequentially increase in size from a front side of the punch body (321) toward a rear side in the first direction,
The plurality of unit cutting members 322a are fixed on the outer surface of the one side of the punch body 321 in a non-rotatable state,
The plurality of unit cutting members 322a have a shape such that when the notch groove 51 formed in the pipe 50 is viewed from the front, the notch groove 51 is cut into a half-moon shape or a half-moon shape ,
A plurality of unit cutting members 322a are provided between the unit cutting member disposed at the foremost position in the first direction and the front end portion of the punch body 321 in the first direction, The outer surface portion of one side extends in a plane having a constant interval to form the planar cutting member 322b,
As the headrest stay rod notch grooved cutting punch 320 moves in the first direction, the flat cutting member 322b is positioned at the tip of the outer side of the pipe 50 at the position where the notch groove 51 is to be formed And the cutting is performed by the plurality of unit cutting members (322a) after the planes are cut at regular intervals. The method according to claim 1,
Further comprising a plurality of unit cutting members (323a, 324a) discretely arranged in a line in the first direction on the outer surface portion on the other side of the one outer surface portion of the punch body and different in size from each other,
The plurality of unit cutting members (323a, 324a) having different sizes are arranged so as to sequentially increase in size from a front side of the punch body (321) toward a rear side in the first direction,
The plurality of unit cutting members (323a, 324a) are fixed on the outer surface of the other side of the punch body (321) in a non-rotatable state,
The punch body (321) is provided between the unit cutting member disposed at the foremost position in the first direction among the plurality of unit cutting members (323a; 324a) and the front end portion in the first direction of the punch body (321) And the outer side surface of the other side of the flat cutting member 323b (324b)
As the headrest stay rod notch groove cutting punch 320 moves in the first direction, the flat cutting member 323b (324b) moves to the outside of the pipe 50 at the position where the notch groove 51 is to be formed Wherein cutting is performed by the plurality of unit cutting members (323a, 324a) after cutting a plane at regular intervals on the side end of the side portion. 3. The method according to claim 1 or 2,
Wherein the plurality of unit cutting members are removable from the punch body. A mold part 100 in which a molding space a is formed;
A seating part 200 disposed in the molding space a and on which a hollow pipe 50 is seated;
The headrest stay notch groove cutting punch (320) of claim 1 or 2, which is movably installed in the mold part (100). And
And a lifting cylinder (310) installed on the mold part (100) for moving the cutting punch (320). 5. The method of claim 4,
The seating part (200)
A lower seating body 210 having a lower seating groove 211 on which the lower end of the pipe 50 is seated,
An upper seating body 220 coupled to an upper portion of the lower seating body 210 and having an upper seating groove 221 on which the upper end of the pipe 50 is seated,
A pair of grip members 230 for gripping both ends of the upper seating body 220 and the lower seating body 210 coupled to each other,
And a pair of horizontal cylinders (240) installed on the mold part (100) and having a shaft (241) for moving the pair of grip members (230) along the horizontal direction. Rod notch groove cutting and forming device. 5. The method of claim 4,
And a rotating motor 330 for rotating the cutting punch 320,
A through hole 201 through which the cutting punch 320 is passed is formed in the seating part 200,
Wherein the cutting punch (320) is rotatable in the through hole (201). A method of forming a notched groove in a headrest stay rod notch groove cutting method using the headrest stay rod notch groove cutting punch of claim 1 or 2.

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