KR20140013562A - Pipe type sheet metal cutting method - Google Patents

Abstract

The present invention relates to a pipe-shaped sheet cutting method comprising: an inputting step (S100) of putting a material (P) on the outer surface of a punch core (116); a setting step (S110) of setting a cutting length of the material (P) in a control part; a pressing step (S120) of pressing the outer surface of the material (P) by moving an upper plate (100) downward so that a pushing member (150) moves a pressing unit (170) inward; an inserting step (S130) of inserting a part of the material (P) into a cutting die (130) of the upper plate (100); and a cutting step (S140) of cutting the front, rear, left, and right sides of the material (P) in order as the cutting die (130) moves in multiple directions. According to the present invention, a reprocessing process caused by burrs is not necessary because the pipe-shaped sheet is mounted on the punch die and cut by moving the cutting die in multiple directions, thereby reducing the number of workers and fraction defective with the reduced work process. Also, the pipe-shaped sheet cutting method can conveniently remove the start and end portions of a welded part in which the defect of the cut material may be caused, can reduce working hours because the material is automatically cut when a worker inputs a desired cut length of the material, and can cut a large amount of materials in a short time.

Description

Pipe Type Sheet Metal Cutting Method

The present invention relates to a pipe-like thin plate cutting method, and more particularly, to a pipe-like thin plate cutting method of raising the pipe-like thin plate material in sequence to cut using a cutting die.

In general, a gasket used as an automobile part is cut into a sheet or a punch made of a thin plate and welded at both ends to form a circular ring shape. The material formed in the circular ring shape is processed by welding to complete the product. Therefore, the product produced by the above process has a problem that the notch occurs at the start and the end of the welding to lower the tensile strength and elongation.

To prevent the notch of the welded part of the product Weld both ends of the sheet made of thin plate to each other, and after processing the welded part, cut the pipe-shaped thin plate to the length of the product and discard the starting part and the finishing part of the welding The part is cut at regular intervals and used as a product.

However, in order to cut the pipe-like sheet material as described above, when the cutting is made using a cutting method using a wheel saw that is used in the past, burrs are generated at the cutting part and the reprocessing is to be made. There is a problem that the unnecessary material is consumed because it is not supported.

In addition, since a large number of operations must be made by hand, there is a problem in that it takes a lot of time to produce a circular ring shape of a certain height.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, by mounting a pipe-like thin plate material to the punch die, inserting a portion of the material inside the cutting die before and after the cutting die, It is to provide a pipe-type thin plate cutting method for cutting the material by moving to the left and right.

According to a feature of the present invention for achieving the object as described above, the pipe-type thin plate cutting method according to the present invention, the input step of inputting the material to the outer peripheral surface of the punch core, the setting step of setting the cutting length of the material to the control unit Pressing the upper plate downward to move the pressing means in the inner direction to press the outer peripheral surface of the material, the pressing step of inserting a portion of the material into the cutting die of the upper plate, the cutting die in a plurality of directions Is moved to include a cutting step of sequentially cutting the front, rear, left, right of the material.

When the cutting of the material is completed, the take-out step of taking out the cut material, the lifting means further comprises a material moving step of moving the material upward by the height set in the control unit.

In the cutting step of cutting the material, the cutting protrusion of the cutting die is moved to the right side of the material along the bent portion of the right cutting rail, the left cutting process of cutting the left side of the material, the cutting protrusion of the cutting die left, The right cutting process of cutting the right side of the material by moving to the right side of the material along the bent portion of the cutting rail, the cutting projection of the cutting die is moved to the rear side of the material along the bend of the cutting rail before and after A front cutting process of cutting, and a cutting protrusion of the cutting die is moved to the front of the material along the bent portion of the front and rear cutting rails to include a rear cutting process of cutting the back of the material.

The left, right, before and after cutting process, respectively made sequentially.

The pressing step may include a downward movement of the pressing member which is moved downward in the axial direction, a horizontal movement of the pressing means which is horizontally moved in the direction of the punch core where the material is installed due to interference with the downward movement of the pressing member, and the horizontal movement. According to the process, the pressing surface is installed in the inner direction of the pressing means is in close contact with the outer peripheral surface of the material, characterized in that it comprises a pressing process for pressing the material.

Pipe-type thin plate cutting method according to the present invention has the following effects.

According to the present invention, since the pipe-shaped thin plate is mounted on the punch die and the cutting die is moved by cutting in a plurality of directions, it is not necessary to perform reprocessing due to burr generation, thereby reducing the number of workers and There is an effect that can reduce the defective rate by reducing.

In addition, it is possible to simply remove the start and end of the welded part that can cause the defect of the cut material by using a pipe-shaped thin plate cutting method, and the cutting operation is automatically performed by inputting the cutting length of the desired material. This can shorten the working time and cut a large amount of material in a short time.

1 is a perspective view showing the shape of a pipe-like sheet material processed by the present invention.
Figure 2 is a cross-sectional view showing the configuration of a preferred embodiment of a pipe-like thin plate cutting device according to the present invention.
Figure 3 is a cross-sectional view showing the operating state of the cutting die and the pressing member in accordance with the lower movement of the upper plate according to the present invention.
Figure 4 is a bottom view showing the configuration of the upper plate constituting the embodiment of the present invention.
Figure 5 is a cross-sectional view showing a detailed configuration of the cutting die and the cutting rail constituting an embodiment of the present invention.
Figure 6 is a flow chart of the cutting die moved along the cutting rail constituting an embodiment of the present invention.
7 is a plan view showing a configuration of a lower plate constituting an embodiment of the present invention.
Figure 8 is a plan view showing the configuration of the pressing means constituting an embodiment of the present invention.
Figure 9 is a side view showing the configuration of the pressing means constituting an embodiment of the present invention.
Fig. 10 is a sectional view showing the construction of the lift means constituting the embodiment of the present invention.
11 is a block diagram showing a pipe-shaped thin plate cutting method of cutting the material according to the present invention.
12 is a block diagram showing a cutting step of the material by the present invention.

Hereinafter, a preferred embodiment of a pipe-like thin plate cutting method according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the shape of a pipe-like sheet material processed by the present invention.

As shown in FIG. 1, both ends of the thin thin plate material P are welded to form a pipe-shaped thin plate material P. As shown in FIG. The welded portion of the pipe-like thin sheet material (P) removes the protruding portion of the welded portion through processing such as grinding. The pipe-like thin plate material P is cut at regular intervals as shown in FIG.

Figure 2 is a cross-sectional view showing the configuration of a preferred embodiment of the pipe-like thin plate cutting device according to the present invention, Figure 3 is a cross-sectional view showing the operating state of the cutting die and the pressing member in accordance with the lower movement of the upper plate according to the present invention 4 is a bottom view showing the configuration of the upper plate constituting the embodiment of the present invention, Figure 5 is a cross-sectional view showing a detailed configuration of the cutting die and the cutting rail constituting the embodiment of the present invention FIG. 6 is a flowchart illustrating a cutting die moved along a cutting rail constituting an embodiment of the present invention.

As shown in Figures 2 to 6, the pipe-like thin plate cutting device of the present invention, the upper and lower plates (100, 160) for supporting a plurality of parts, and is provided on the inside of the upper plate 100 and the material (P One side of the cutting die 130 is inserted into the cutting die, the cutting rail 110 is provided on the outside of the cutting die 130 to guide the movement of the cutting die 130, and the cutting rail 110 Punch core 166 is installed in the lower portion of the support to support the material (P) is fixed, and is installed on one side of the punch core 166 and when the material (P) is cut by the cutting die 130 to a constant height It consists of the lifting means 200 for raising the material (P).

The upper plate 100 is made of a rectangular plate having a predetermined thickness, to support a plurality of parts therein. The upper plate 102 is installed on the upper portion of the upper plate 100. The upper plate 102 is made of a square plate, to support the upper end of the upper plate (100).

The upper plate 104 is installed above the upper plate 102. The upper plate 104 is made of a rectangular plate having a constant thickness, is connected to the shank on the upper and lower the upper plate 100.

A fastening hole (not shown) is formed in the upper plate 100. The fastening hole is formed to penetrate in a rectangular shape, and the cutting rail 110 is installed on the inner circumferential surface of the fastening hole.

The cutting rail 110 is composed of front, rear, left, right cutting rails (112, 114, 116, 118). The front, rear, left and right cutting rails (112, 114, 116, 118) is formed in a rectangular hexahedral shape, and guides the front, rear, left, right movement of the cutting die 130.

The front and rear, left and right cutting rails 112, 114, 116, 118, the lower end of the inner circumferential surface engaging end 120 is formed. The locking end 120 is formed to protrude inward, and is formed to protrude at an inclination angle corresponding to the cutting protrusion 132 of the cutting die 130 to be described below. The locking end 120 is positioned below the cutting protrusion 132 and serves to walk the cutting die 130 so as not to fall to the lower portion.

Bends 122 are formed on the inner circumferential surfaces of the front, rear, left and right cutting rails 112, 114, 116 and 118. The bent portion 122 includes a protrusion 124 protruding inward, a depression 126 recessed outward, and the like.

The protrusion 124 is formed to protrude inclined inward. When the cutting die 130, which will be described below, is moved to the rear, the protrusion 124 may have the cutting protrusion 132 of the cutting die 130 contacting the cutting die 130 along the inclined surface of the protrusion 124. ) Is moved.

A depression 126 is formed at an upper portion or a lower portion of the protrusion 124. The depression 126 is formed to be recessed in the same shape as the protrusion 124 on the inner circumferential surface of the cutting rail 110. When the cutting die 130 is moved backward, the recess 126 contacts the cutting protrusion 132 of the cutting die 130 so that the cutting die 130 is inclined along the inclined surface of the recess 126. Is moved.

Specifically, as shown in FIG. 6, the protrusion 124 is formed on the left cutting rail 116, and the recess 126 is formed at a position corresponding to the right cutting rail 118 to form the cutting protrusion ( As the 132 moves, the cutting die 130 is moved to the right.

A depression 126 is formed on an upper portion of the protrusion 124 of the left cutting rail 116. A protruding portion 124 is formed on an inner circumferential surface of the ucutting rail 118 corresponding to the recessed portion 126. The cutting protrusion 132 is moved to the recess 126 of the left cutting rail 116, and the cutting protrusion 132 is moved along the protrusion 124 of the right cutting rail 118, so that the cutting die 130 is moved. It is moved to the right. Therefore, the cutting dies 130 provided on the inner side of the left and right cutting rails 116 and 118 are moved left and right.

The front and rear cutting rails 112 and 114 are installed at the front and rear of the left and right cutting rails 116 and 118. Flexures 122 are formed on inner circumferential surfaces of the front and rear cutting rails 112 and 114. The bent portion 122 of the pre-cutting rail 112 is located above the bent portion 122 of the right cutting rail 118.

When the protrusion 124 is formed on the inner circumferential surface of the pre-cutting rail 112, the depression 126 is formed at a corresponding position of the after-cutting rail 114. The cutting protrusion 132 is moved along the protruding portion 124 of the pre-cutting rail 112 and the depression 126 of the post-cutting rail 114 to move the cutting die 130 backward.

A depression 126 is formed on an upper portion of the protrusion 124 of the pre-cut rail 112. A protruding portion 124 is formed on an inner circumferential surface of the hooking rail 114 corresponding to the recessed portion 126. The cutting protrusion 132 is moved to the recess 126 of the pre-cutting rail 112, and the cutting protrusion 132 is moved along the protrusion 124 of the after-cutting rail 114, so that the cutting die 130 is moved. Is moved forward. Therefore, the cutting dies 130 provided on the inner side of the front and rear cutting rails 112 and 114 are moved back and forth.

That is, the cutting die 130 is moved in the order of right → left → back → front direction by the bent portion 122 formed on the inner circumferential surface of the cutting rail 110 to perform a cutting operation.

The cutting die 130 is installed on the inner circumferential surface of the cutting rail 110. The cutting die 130 is formed in a hexahedral shape, the cutting protrusion 132 is formed to protrude outwardly on the outer peripheral surface.

The cutting protrusion 132 is moved along the curved portion 122 of the cutting rail 110 to move the cutting die 130 before, after, left and right.

A coupling groove 134 is formed below the cutting die 130. The coupling groove 134 is formed to be recessed in a circular shape on the lower surface of the cutting die 130. The cutting groove 134 to be described below is coupled to the coupling groove 134 is fixed.

The cutting blade 136 is coupled to the inside of the coupling groove 134. The cutting blade 136 is formed in a circular ring shape, the material (P) is inserted into the inner peripheral surface of the cutting blade 136 by the movement of the cutting die 130 the inner peripheral surface edge of the cutting blade 136 The raw material P is cut by this.

An elastic means 140 is installed on the upper surface of the cutting die 130. The elastic means 140 is composed of a support bar 142 and the elastic member 144 and the like. The support bar 142 is formed in a cylindrical shape, one end is fixed to the top plate, the other end is coupled to the upper surface of the cutting die 130. The support bar 142 is provided with a plurality, it is made to slide up and down. The support bar 142 is coupled to the upper surface of the cutting die 130. The support bar 142 supports the cutting die 130 to be moved up and down.

An elastic member 144 is installed on the outer circumferential surface of the support bar 142. The elastic member 144 is made of an elastic member such as a spring, and presses the cutting die 130 with a constant elastic force in the downward direction.

That is, when the upper plate 100 is moved to the lower side, the cutting die 130 installed in the upper plate 100 is moved to the lower portion is in close contact with the lower plate 160 to be described below. When the cutting die 130 is in close contact with the lower plate 160, the upper plate 100 moves downward by an elastic member 144 on the upper surface of the cutting die 130. Force acts stronger. Therefore, the cutting die 130 is moved upward in the state in close contact with the lower plate 160.

The pressing members 150 are installed at equal intervals at positions spaced apart from the center axis of the cutting blade 136. The pressing member 150 is formed in a hexahedral shape, it is installed at intervals of 120 ° with respect to the central axis of the cutting blade 136. The pressing member 150 moves the pressing means 170 to be described below inwardly according to the downward movement of the upper plate 100 so that the outer circumferential surface of the material P is pressed.

The first pressing protrusion 152 and the second pressing protrusion 154 are formed on the lower surface of the pressing member 150. The first pressing protrusion 152 is formed to protrude downward by a predetermined height in an inner direction of the lower surface of the pressing member 150. A first upper sloped surface 154 is formed at an inner edge portion of the first push protrusion 152. The first upper sloped surface 154 of the first pressing protrusion 152 is in contact with the first lower sloped surface 178 of the pressing means 170 to be described below so that the pressing means 170 is moved inward. Push it up.

The second pressing protrusion 154 is formed in an outer side direction of the lower surface of the pressing member 150. The second push protrusion 154 is formed to protrude by a predetermined height, and a second upper inclined surface 156 is formed at an inner edge portion of the second push protrusion 154. The second upper sloped surface 156 of the second push protrusion 154 is in contact with the second lower sloped surface 184 of the pressing means 170 to be described below so that the pressing means 170 is moved inward. Push it up.

A first seating groove 158 is formed between the first pressing protrusion 152 and the second pressing protrusion 154. The first seating groove 158 is formed to be recessed in a rectangular shape, and one surface is inclined. The third pressing protrusion 182 is coupled to the first seating groove 158.

FIG. 7 is a plan view showing the configuration of the lower plate constituting the embodiment of the present invention, FIG. 8 is a plan view showing the configuration of the pressing means constituting the embodiment of the present invention, and FIG. 9 is an embodiment of the present invention. The side view which shows the structure of the pressurizing means which comprises the example is shown, and sectional drawing which shows the structure of the lifting means which comprises the Example of this invention is shown by FIG.

As shown in Figure 7 to 10, the lower plate 160 is installed below the upper plate 100. The lower plate 160 is made of a rectangular plate material, and supports a plurality of parts inside.

The through hole 162 is formed in the center of the lower plate 160. The through hole 162 is formed to penetrate in a circular shape, and a punch core 166 to be described below is installed therein.

A moving hole 164 is formed outside the through hole 162 of the lower plate 160. The moving hole 164 is formed to penetrate in a rectangular shape, and when the pressing member 150 moves downward, serves to guide the close contact with the pressing means 170 to be described below through the moving hole 164. do.

The punch core 166 is installed at the center portion of the through hole 162. The punch core 166 is formed in a cylindrical shape and is inserted to surround the outer circumferential surface to support the inner side when the raw material P is cut.

A transfer groove 168 is formed on the outer circumferential surface of the punch core 166. The transfer groove 168 is positioned at intervals of 120 ° in the circumferential direction with respect to the central axis of the punch core 166, and is formed to be recessed by a predetermined depth inward. The support groove 202 to be described below is inserted into the transfer groove 168 is moved up and down.

Pressing means 170 is installed on the outer side of the punch core 166. The pressing means 170 is installed at intervals of 120 ° in the circumferential direction with respect to the central axis of the punch core 166. The pressing means 170, the pressing block 172 is in close contact with the outer peripheral surface of the material (P), the moving block 176 is coupled to one side of the pressing block 172 and the pressing block 172 and It is provided on one side of the movable block 176, and consists of a lower support block 186 for supporting the movable block 176.

8 and 9, the pressing block 172 has a hexahedral shape and is moved forward to press the material P. Referring to FIGS. On the right side of the pressing block 172, a pressing surface 174 is formed to be recessed in an arc shape corresponding to the outer peripheral surface of the punch core 166. The pressing surface 174 is in close contact with the outer circumferential surface of the raw material (P) when the pressing block 172 moves forward serves to press the raw material (P).

The moving block 176 is coupled to the left side of the pressing block 172. The movable block 176 is formed of a hexahedron having a “┛” shape, and is moved in contact with the pressing member 150 to move the pressing block 172 inward.

The first lower inclined surface 178 is formed at the left edge of the upper surface of the moving block 176. When the pressing member 150 moves downward, the first lower slope surface 178 is in close contact with the first upper slope surface 154 of the pressing member 150 to move the moving block 176 inward.

A second seating groove 180 is formed on the left side of the first lower sloped surface 178. The second seating groove 180 is formed to be recessed in a rectangular shape and one surface is inclined. The first pressing protrusion 152 is inserted into the second seating groove 180.

A third pressing protrusion 182 is formed on the left side of the second seating groove 180. The third pressing protrusion 182 is formed to protrude by a predetermined height, and a second lower inclined surface 184 is formed at the left edge portion. The third pressing protrusion 182 is inserted into the first seating groove 158 to guide the moving block 176 to be completely inwardly inwardly.

The second lower inclined surface 184 is in close contact with the second upper inclined surface 156, and when the moving block 176 is moved inward, the second pressing protrusion 154 is leftward of the moving block 176. Guide with.

The lower support block 186 is coupled to the lower portion of the movable block 176. The lower support block 186 is formed of a rectangular plate member to support the movable block 176.

Side guide blocks 188 are installed at both front and rear sides of the lower support block 186. The side guide block 188 is formed in a rectangular parallelepiped shape and is installed to be in close contact with the side surface of the lower support block 186. The side guide block 188 guides the inward movement of the lower support block 186.

A rear support block 190 is installed on the left side of the side guide block 188. The rear support block 190 is formed of a hexahedron having a "[" shape, and supports the left side of the lower support block 186.

Fixing bolts 192 are installed at regular intervals on the left side of the rear support block 190. The fixing bolt 192 has a threaded end portion coupled to a screw hole (not shown) formed at the left side of the lower support block 186. A spring 194 is coupled to an outer circumferential surface of the fixing bolt 192 to return the pressing means 170 moved inwardly by the pressing member 150 to the outside by an elastic force.

In detail, a plurality of pressing means 170 provided with a plurality of outer circumferential surfaces of the punch core 166 along the arc direction are moved inwards by the pressing member 150 to press the outer circumferential surface of the material P, and the pressing When the member 150 is moved upward, the pressing means 170 is moved to the outside by the spring 194 of the fixing bolt 192 to release the pressure of the material (P).

The lower plate 196 is installed below the pressing means 170. The lower plate 196 is made of a rectangular plate material to support a plurality of parts.

Lifting means 200 is installed below the lower plate 196. The elevating means 200, a plurality of support rods 202 for supporting the lower portion of the material (P), coupled to one side of the support rods 202, elevating plate 204 for supporting the lower portion of the support rods 202 ), A driving motor 220 for generating rotational power, and rotatably installed on one side of the elevating plate 204, are rotated by receiving the rotating power of the driving motor 220, and the elevating plate 204. It consists of a rotary bar 212 for moving up and down.

The support rod 202 is formed in a cylindrical shape, it is installed on the lower portion of the punch core 166. The support rods 202 are installed to support the lower portion along the circumferential direction of the material (P). The support rod 202 is moved according to the up and down movement of the elevating plate 204 to be described below to move the material P up and down.

A lifting plate 204 is installed below the support rod 202. The lifting plate 204 is made of a rectangular plate material, and supports the lower portion of the support bar 202.

A lifting hole 206 is formed at the left side of the lifting plate 204. The lifting hole 206 is formed to penetrate in a circular shape, the thread is formed on the inner peripheral surface. The lifting bar 206 is coupled to the rotating bar 212 to be described below, the lifting plate 204 is moved up, down by the rotation of the rotating bar (212).

The lifting guide bar 208 is coupled to the right side of the lifting plate 204. The lifting guide bar 208 is formed in a cylindrical shape, one end is coupled to the lower plate 196 and the other end is coupled to the lower plate. The elevating guide bar 208 is inserted into the guide hole 210 formed through the right side of the elevating plate 204 is installed. The elevating guide bar 208 serves to guide the up and down movement of the elevating plate 204 when the elevating plate 204 is moved up and down by the rotary bar 212 to be described below.

The lifting bar 206 is coupled to the rotation bar 212. The rotating bar 212 is formed in a cylindrical shape, the outer peripheral surface is formed with a screw thread. The rotation bar 212 is rotated by the drive motor 220 to be described below, and moves the lifting plate 204 up and down.

The rotary pulley 214 is installed at the upper portion of the rotating bar 212. The rotating pulley 214 as a general pulley (Pulley), a detailed description thereof will be omitted. The rotary pulley 214 receives the rotational force of the driving pulley 218 connected to the driving motor 220 described below by the power transmission belt 216 to rotate the rotating bar 212.

Side plates 222 are installed at both lower sides of the lower plate 196. The side plate 222 has a hexahedral shape, and supports both lower sides of the lower plate 196.

The lower plate 224 is installed below the side plate 222. The lower plate 224 is made of a rectangular plate, and serves to support the side plate 222.

Hereinafter, the operation of the pipe-like thin plate cutting method of the present invention having the above configuration will be described with reference to FIGS. 1 to 12.

First, the pipe-type thin plate cutting method, the input step (S100) for inputting the material to the outer peripheral surface of the punch core 166, the setting step (S110), the setting step of setting the cutting height of the material (P) to the control unit (not shown), When the plate 100 moves downward, the pressing member 150 moves the pressing means 170 inward to press the outer circumferential surface of the material P, and a cutting die of the upper plate 100. Insertion step (S130) is inserted into a portion of the material (P) (130), the cutting die 130 is moved in a plurality of directions cutting step of sequentially cutting the front, rear, left, right of the material (P) (S140) and the like.

In the input step (S100), the pipe-like sheet material (P) is inserted into the outer peripheral surface of the punch core 166. When the raw material P is inserted, the punch core 166 is positioned on the inner circumferential surface, and the support rod 202 supports the lower portion of the raw material P on the lower surface.

When the input step S100 of the material P is completed, a setting step S110 of inputting a cutting height of the material P through a controller (not shown) is performed.

In the setting step S110, the cutting height of the material is input using an input unit (not shown). By the setting step (S110), the material P is transferred upward by the cutting height of the material P desired by the operator.

When the setting of the cutting height set in the control unit is completed, the cutting blade 136 is mounted on the cutting die 130 in accordance with the cutting height of the raw material (P). When the mounting of the cutting blade 136 is completed, the upper plate 100 is moved downward.

When the upper plate 100 is moved downward, the pressing member 150, which is moved together with the upper plate 100, moves the pressing means 170, and the pressing step S120 is performed.

In the pressing step S120, when the upper plate 100 moves downward in the axial direction, a downward movement process S122 in which the pressing member 150 coupled to the upper plate 100 moves downward is performed. .

When the pressing member 150 is moved downward by the downward movement process (S122), the pressing means 170 is moved inward to move the horizontal means (S124) of the pressing means 170.

According to the horizontal movement process (S124), the pressing surface 174 which is installed in the inner direction of the pressing means 170 is in close contact with the outer peripheral surface of the material (P) and the pressing process (S126) for pressing the material (P) is Proceed.

The pressing means 170 presses the material P and at the same time the cutting die 130 is in close contact with the upper portion of the material (P) seated to protrude upwardly of the lower plate 160 to cut the upper end of the material (P). The insertion step S130 is inserted into the blade 136.

When the cutting die 130 is in close contact with the upper portion of the raw material (P), the raw material (P) is inserted into the cutting blade 136 of the cutting die 130. When the force of pressing the upper plate 100 in the downward direction is stronger than the elastic force of the elastic means 140 installed on the upper surface of the cutting die 130, the cutting portion of the material (P) to the cutting die 130 In the inserted state is moved in the upper direction along the cutting rail (110). Therefore, the cutting die 130 is moved along the bent portion 122 of the cutting rail 110 in the front, rear, left, right direction cutting step (S140) is made to cut the material (P).

The cutting step (S140), the cutting protrusion 132 of the cutting die 130 is moved to the right side of the material (P) along the bent portion 122 of the left, right cutting rails (116, 118) of the material (P) Left cutting process (S142) for cutting the left side, the cutting projection 132 of the cutting die 130 is moved to the right side of the material (P) along the bent portion 122 of the left, right cutting rails (116, 118) Right cutting process for cutting the right side of P) (S144), the cutting projection 132 of the cutting die 130 is moved to the rear side of the material (P) along the bent portion 122 of the front and rear cutting rails (112, 114) The front cutting process (S146) of cutting the front side of the raw material (P), the cutting protrusion 132 of the cutting die 130 is along the bent portion 122 of the front and rear cutting rails (112, 114) (P) The cutting is made sequentially in the rear cutting process (S148) is moved to the front of the cutting the rear of the material (P).

The cutting step (S140), the cutting die 130 is moved upward along the bent portion 122 of the cutting rail 110, the cutting die 130 is moved in the right → left → back → front direction The material P is cut in the left-right-right-front-rear direction by the inner peripheral surface edge of the cutting blade 136 of the cutting die 130.

In the left cutting process S142, the cutting protrusion 132 on the left side of the cutting die 130 is moved along the protrusion 124 of the left cutting rail 116, so that the cutting die 130 is moved in the right direction. It is moved to and is inserted into the recessed portion 126 of the woking rail 118. Therefore, the cutting die 130 is moved in the right direction, and the left portion of the raw material P inserted into the inner peripheral surface of the cutting blade 136 is cut.

In the right cutting process (S144), the cutting protrusion 132 of the right side of the cutting die 130 is moved along the protrusion 124 to the right cutting rail 118, so that the cutting die 130 is moved in the right direction. It is moved and inserted into the depression 126 of the left cutting rail 112. Therefore, the cutting die 130 is moved in the left direction, and the right portion of the raw material P inserted into the inner peripheral surface of the cutting blade 136 is cut.

In the front cutting process S146, the cutting protrusion 132 of the front surface of the cutting die 130 is moved along the protrusion 124 to the pre-cut rail 112, and the cutting die 130 is moved backward. It is inserted into the recess 126 of the hooking rail 114. Therefore, the cutting die 130 is moved to the rear, the front portion of the material (P) inserted into the inner peripheral surface of the cutting blade 136 is cut.

In the rear cutting process S148, the cutting protrusion 132 of the rear side of the cutting die 130 is moved along the protrusion 124 on the cutting rail 114, and the cutting die 130 is moved forward. It is inserted into the depression 126 of the pre-cut rail (112). Therefore, the cutting die 130 is moved forward, and the rear portion of the material (P) inserted into the inner peripheral surface of the cutting blade 136 is cut.

When the cutting of the material P is completed, the upper plate 100 is moved upward, and the pressing member 150 for moving the pressing means 170 inwardly is also moved upward to the outer peripheral surface of the material P. Pressurization is released.

That is, by pressing the outer circumferential surface of the raw material (P) of the pressing means 170, the cutting die 130 is moved to the right → left → rear → front direction to punch the material (P) when the cutting operation is performed The material P moves in close contact with the outer circumferential surface of the core 166 to prevent a defect from occurring.

When the cutting die 130 is separated from the lower plate 160 by the upward movement of the upper plate 100, the elastic force of the elastic means 140 installed on the upper surface of the cutting die 130 acts to cause the cutting die ( 130 protrudes downward.

When the upward movement of the upper plate 100 is completed, the worker proceeds to take out the step (S150) for gripping the cut material (P) to the outside.

When taking out the cut material P is completed, the lifting means 200 proceeds to the material moving step (S160) for moving the material (P) upward by the height set in the control unit.

In the material movement step (S160), the driving motor 220 rotates according to the cutting height of the material P input to the controller to rotate the rotation bar 212. As the rotary bar 212 rotates, the elevating plate 204 is raised by the height input to the control unit so that the support bar 202 installed on the upper portion of the elevating plate 204 is moved upward.

When the support rod 202 is moved upward, the material (P) is seated on the upper portion of the support rod 202 is moved upward, protrudes to the height to be cut in the upper direction of the lower plate 160.

The scope of the present invention is not limited to the above-described embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the scope of the present invention.

100. Upper plate 110. Cutting rail
120. Jamming 130. Cutting Die
140. Elastic means 150. Pushing members
160. Lower Plate 166. Punch Core
170. Pressing means 200. Lifting means

Claims (5)

Input step (S100) for inserting the raw material (P) to the outer peripheral surface of the punch core 116;
A setting step (S110) of setting a cutting length of the raw material P in the control unit;
Pressing step (S120) for pressing the outer circumferential surface of the material (P) by moving the pressing member 150 inward direction by the pressing member 150 to move the upper plate 100 downward;
Inserting step (S130) of a portion of the material (P) is inserted into the cutting die 130 of the upper plate (100);
The cutting die 130 is moved in a number of directions cutting step (S140) to sequentially cut the front, rear, left, right of the material (P); Pipe-type thin plate cutting method comprising a.
The method of claim 1, further comprising: taking out the cut material (P) when the cutting of the material (P) is completed (S150);
Pipe lifting plate (200) further comprises a material moving step (S160) for moving the material (P) upward by the length set in the control unit.
According to claim 1, Cutting step (S140) for cutting the material (P);
The cutting protrusion 132 of the cutting die 130 is moved to the right side of the material P along the bent portions 122 of the left and right cutting rails 116 and 118 to cut the left side of the material P ( S142);
The cutting protrusion 132 of the cutting die 130 is moved to the right side of the raw material P along the bent portions 122 of the left and right cutting rails 116 and 118 to cut the right side of the raw material P ( S144);
The cutting protrusion 132 of the cutting die 130 is moved to the rear side of the material (P) along the bent portion 122 of the front and rear cutting rails (112, 114) to cut the front side of the material (P) (S146);
The cutting protrusion 132 of the cutting die 130 is moved to the front side of the raw material P along the bent portion 122 of the front and rear cutting rails 112 and 114, and the rear cutting process of cutting the rear side of the raw material P ( S148); pipe-like thin plate cutting method comprising a. The method of claim 3, wherein the left, right, before and after cutting processes (S142, S144, S146, and S148) are sequentially performed. The method of claim 1, wherein the pressing step (S120),
A downward movement process of the pressing member 150 moved downward in the axial direction (S122);
A horizontal movement process of the pressing means 170 which is moved horizontally in the direction of the punch core 116 where interference is caused by the downward movement of the pressing member 150 and the material P is installed;
According to the horizontal movement process (S124), the pressing surface 174 which is installed in the inner direction of the pressing means 170 is in close contact with the outer peripheral surface of the material (P) and pressurizing process (S126) Pipe-type thin plate cutting method consisting of.

Images