JP5112150B2 - Manufacturing apparatus and manufacturing method of expanded metal with rib - Google Patents

Description

  The present invention relates to a manufacturing apparatus and a manufacturing method of a ribbed expanded metal, and more particularly to a manufacturing apparatus and a manufacturing method of a ribbed expanded metal that can omit the flattening step that has been conventionally performed.

Expanded metal with ribs forms a staggered cut in a predetermined range of the metal plate material that is the original plate, and widens this, or widens this while forming a cut, and widens by forming the cut Is a metal product having a mesh-like shape and a flat rib (plate) 7 in which no mesh is formed in the remaining range where no cuts are formed.
That is, the expanded metal with a rib is a metal product composed of a mesh 6 and a rib 7 as shown in FIG. FIG. 1 is a schematic view of an expanded metal with ribs, (a) is an overall view thereof, (b) is an enlarged view of a mesh 6 mesh, (c) is a cross-sectional view taken along line AA in (b). is there.

Therefore, in the case of ordinary expanded metal that has been processed into a uniform mesh shape throughout the product, that is, expanded metal without ribs, other members are meshed by welding to reinforce and connect them. However, in the case of expanded metal with ribs, rib 7 is provided from the beginning, so it is superior in workability and workability compared to ordinary expanded metal without ribs. Yes.
For this reason, in recent years, expanded metal with ribs has excellent design as well as construction and civil engineering materials such as simple fences, temporary scaffolding treads, groove covers for irrigation canals, etc. Therefore, it is widely used also in the field of home and garden materials such as shelf boards for gardening.

2-4 is a figure which shows the manufacturing apparatus and manufacturing method which concern on the prior art of the expanded metal with a rib (for example, refer patent documents 1-2). Hereinafter, it demonstrates along the said figure.
The manufacturing apparatus which concerns on the prior art of an expanded metal with a rib is (1) The conveyance means 2 which conveys the metal plate material 1 used as an original plate, (2) The lower blade arrange | positioned on the one side of the metal plate material at the exit side of the conveyance means 3 and (3) arranged on the exit side of the conveying means and on the other side of the metal plate material, and enters the plate surface of the metal plate material to form intermittent cuts in the plate width direction, and each widening and metal plate material An upper blade 4 for separating the ribbed expanded metal is provided.

  As a manufacturing method using the apparatus, first, as shown in FIG. 2 (a), the upper plate 4 is raised above the metal plate 1, and the conveying means 2 is a metal plate corresponding to the width R of the rib. 1 is sent out in the transport direction. Then, as shown in FIG. 2 (b), the upper blade 4 is lowered, and the upper blade 4 is inserted into the plate surface of the metal plate material to form intermittent cuts in the plate width direction of the metal plate material. Widen each one. The processed portion becomes a boundary between the rib 7 and the mesh 6.

  Next, the upper blade 4 is raised as shown in FIG. 2C, and then the upper blade 4 is moved in the longitudinal direction of the mesh in the plate width direction of the metal plate 1 as shown in FIG. , And the conveying means 2 sends out the metal plate 1 by the step width W, and then the upper blade 4 is lowered as shown in FIG. Are inserted into the plate surface to form intermittent cuts in the plate width direction of the metal plate material, and each is widened.

  At this time, as described above, the upper blade 4 is moved in the plate width direction of the metal plate 1 by a half of the mesh center distance LW of the mesh, and the conveying means 2 moves the metal plate 1 by the step width W. Since they are fed out, the cuts formed in the metal plate 1 are staggered, and when each is widened, mesh meshes are arranged in the plate width direction.

Next, as shown in FIG. 3 (c), the upper blade 4 is raised, and then the upper blade 4 is returned to the plate width direction of the metal plate 1 by 1/2 of the mesh center direction distance LW of the mesh, The conveying means 2 feeds the metal plate 1 by the step width W.
Thereafter, by sequentially repeating the operations shown in FIG. 2B to FIG. 3C, the range of R from the tip of the metal plate 1 is a flat rib 7 as shown in FIG. Subsequent ranges are processed into a mesh 6.

After the mesh length direction product length S is obtained by sequentially repeating the above operation, the conveying means 2 feeds the metal plate 1 in the conveying direction by the width R of the rib as shown in FIG. Then, the upper blade 4 is lowered, and the upper blade 4 is inserted into the plate surface of the metal plate material to form intermittent cuts in the plate width direction of the metal plate material and widen each.
Next, after raising the upper blade 4, as shown in FIG. 4C, the upper blade 4 is moved in the plate width direction of the metal plate 1 by a half of the mesh center direction distance LW of the mesh. Thereafter, the upper blade 4 is moved down, and the upper blade 4 is inserted into the plate surface of the metal plate material. Thus, the expanded metal with ribs, which is a processed product in which the range of R from the front end portion and the range of R from the rear end portion is the rib 7 and the mesh 6 is formed therebetween, is separated from the metal plate 1.

The above is the outline of the manufacturing apparatus and manufacturing method according to the related art of the expanded metal with ribs, but the processed product separated from the metal plate 1 by the apparatus and method is viewed from the B direction in FIG. As shown in FIG. 5 which is a side view of the processed product, a so-called Z-shape is formed which is bent at the boundary between the mesh 6 and the rib 7. Therefore, conventionally, a post-process for flattening the bent workpiece is necessary.
JP 2001-47153 A JP 2004-298965 A

  The problem to be solved by the present invention is to provide a manufacturing apparatus and a manufacturing method of a ribbed expanded metal that can omit the flattening step that has been conventionally performed.

  In order to solve the above problems, the inventor has conducted various experimental and theoretical studies using an actual machine. As a result, the upper blade 4 is inserted to form intermittent cuts in the plate width direction. When each widening is performed for the first time, in other words, after the conveying means 2 feeds the metal plate 1 in the conveying direction by the width R of the rib, the upper blade 4 is inserted into the plate surface of the metal plate 1 and the metal plate 1 When an intermittent cut is formed in the plate width direction and each is widened, the upper blade is inserted into the rib 7 positioned forward in the conveying direction from the upper blade insertion portion that becomes the boundary between the rib 7 and the mesh 6. When cutting the ribbed expanded metal from the metal plate material by pressing from the plate surface side to insert the upper blade, the plate surface side into which the upper blade is inserted into the rib 7 located between the upper blade insertion blade portion and the mesh The metal plate is bent into a Z shape when pressed from To obtain the technical knowledge that can be solved.

  Based on the above findings, the present inventor has conceived a manufacturing apparatus and a manufacturing method of a ribbed expanded metal that can omit the flattening step that has been conventionally performed. The gist is as follows.

( 1 ) An upper blade is inserted into a predetermined range of the metal plate material to be conveyed to form staggered cuts, and each is widened. In the manufacturing method of expanded metal with ribs, the flat metal is left on both sides of the mesh as a flat rib, and the ribbed expanded metal is cut off from the metal plate material. When forming intermittent cuts in the width direction and widening each width for the first time, the plate surface side where the upper blade is inserted into the rib located forward in the conveying direction from the upper blade insertion portion that becomes the boundary between the rib and the mesh When cutting the ribbed expanded metal from the metal plate by inserting the upper blade, insert the upper blade into the rib located between the upper blade insertion portion and the mesh. Method of manufacturing a ribbed expanded metal, characterized in that pressing the plate face.

  The expanded metal with ribs processed by the manufacturing apparatus and the manufacturing method according to the prior art has a so-called Z-shape bent at the boundary between the mesh and the rib, and a subsequent process is required to flatten the metal. However, since the expanded metal with ribs processed by the manufacturing apparatus and the manufacturing method according to the present invention has an excellent flatness without bending, the flattening step that has been conventionally performed can be omitted. Therefore, according to the manufacturing apparatus and the manufacturing method according to the present invention, it is possible to shorten the manufacturing time and the manufacturing cost.

Hereinafter, the best mode for carrying out the present invention will be described with reference to FIGS.
As shown in FIGS. 6 to 8, a manufacturing apparatus for a ribbed expanded metal according to the present invention (hereinafter referred to as the present invention apparatus) includes (1) a transport means 2 for transporting a metal plate 1 serving as an original plate, (2) a lower blade 3 arranged on the exit side of the conveying means 2 and on one side of the metal plate, and (3) an upper blade 4 arranged on the exit side of the conveying means 2 and on the other side of the metal plate, 4) A rib pressing unit 5 is provided on the exit side of the conveying unit 2 and on the plate surface side on which the upper blade 4 is arranged.
And about the upper blade 4, it has a function which inserts into the plate | board surface of the metal plate material 1, and forms the intermittent cut | interruption in a plate width direction, each widening, and the function of separating the expanded metal with a rib from the metal plate material 1, The rib pressing means 5 has a function of pressing the rib 7 from the plate surface side where the upper blade 4 is inserted. In addition, the specific aspect of the conveyance means 2, the lower blade 3, the upper blade 4, and the rib press means 5 is mentioned later.

Next, a method for producing a ribbed expanded metal according to the present invention (hereinafter referred to as the present method) will be described.
First, as shown in FIG. 6A, the conveying means 2 feeds the metal plate 1 in the conveying direction by the width R of the rib while the upper blade 4 is raised above the metal plate 1. Then, the upper blade 4 and the rib pressing means 5 are lowered, and as shown in FIG. 6 (b), the rib pressing means 5 causes the plate surface of the metal plate material, more specifically, the rib width R in the transport direction as described above. The upper blade 4 is inserted into the plate surface of the metal plate material in a state where the plate surface of the rib fed by the amount is pressed, thereby forming intermittent cuts in the plate width direction of the metal plate material and widening each. The processed portion becomes a boundary between the rib 7 and the mesh 6.

  In the method of the present invention, when the upper blade 4 is inserted and the intermittent cuts in the plate width direction and the respective widening are performed for the first time, in other words, the conveying means 2 is equal to the width R of the rib. When the metal plate 1 is fed in the conveying direction, the upper blade 4 is inserted into the plate surface of the metal plate to form intermittent cuts in the plate width direction of the metal plate 1 and widen each of the ribs 7. Unlike the manufacturing method according to the prior art, the ribs 7 positioned forward in the conveying direction from the upper blade insertion part serving as the boundary between the mesh 6 and the mesh 6 are pressed from the plate surface side where the upper blade is inserted. The metal plate material does not bend at the boundary of 7.

  In addition, as a timing which presses the rib 7, since the rib 7 should just be pressed when each is widened while forming the intermittent cut | interruption in the plate width direction of the metal plate material 1 as mentioned above, It is sufficient if the rib pressing means 5 is in contact with the rib 7 at the same time as the upper blade 4 or immediately before the upper blade 4 is inserted, but the latter is desirable from the viewpoint of workability. That is, if the rib pressing means 5 is controlled so as to contact the rib immediately before the upper blade 4 is inserted, intermittent cuts are formed in the plate width direction of the metal plate 1 and each is widened. The certainty of rib pressing increases.

  Next, processing of the mesh portion is performed. After the upper blade 4 and the rib pressing means 5 are raised as shown in FIG. 6C, the upper blade 4 is moved to the plate of the metal plate 1 as shown in FIG. After moving in the width direction by a half of the distance LW in the major direction of the mesh, the conveying means 2 sends out the metal plate 1 by the step width W, and then the upper blade 4 and the upper blade 4 as shown in FIG. The rib pressing means 5 is lowered, and the upper blade 4 is inserted into the plate surface of the metal plate while the rib pressing means 5 presses the plate surface of the metal plate, and intermittently in the plate width direction of the metal plate. A cut is formed and each is widened.

  At this time, as described above, the upper blade 4 is moved in the plate width direction of the metal plate 1 by a half of the mesh center distance LW of the mesh, and the conveying means 2 moves the metal plate 1 by the step width W. Since they are fed out, the cuts formed in the metal plate 1 are staggered, and when each is widened, mesh meshes are arranged in the plate width direction.

Next, the upper blade 4 and the rib pressing means 5 are raised, and then the upper blade 4 is ½ of the mesh center-to-center distance LW in the plate width direction of the metal plate 1 as shown in FIG. At the same time, the conveying means 2 feeds the metal plate 1 by the step width W.
Thereafter, by sequentially repeating the operations shown in FIG. 6B to FIG. 7C, the range of R from the tip of the metal plate 1 is a flat rib 7, as shown in FIG. 8A. Subsequent ranges are processed into a mesh 6.

  As described above, when the upper blade 4 is inserted and the intermittent cuts in the plate width direction and the respective widening are performed for the first time, the metal plate material should not be bent at the boundary between the mesh 6 and the rib 7. In order to do this, it is necessary to press the rib 7 positioned forward in the transport direction from the upper blade insertion portion that becomes the boundary between the rib 7 and the mesh 6, but the mesh portion (however, the boundary portion between the rib 7 described above is excluded) .) Is not necessarily required to press the rib 7 or the metal plate 1. This is because the metal plate 1 does not bend when the mesh portion (except for the boundary portion with the rib 7 described above) is processed even by the manufacturing method according to the related art. Therefore, when processing the range, it is not always necessary to raise or lower the rib pressing means 5 or press the rib 7 or the metal plate 1.

  After the mesh length direction product length S is obtained by sequentially repeating the above operation, the conveying means 2 sends the metal plate 1 in the conveying direction by the rib width R as shown in FIG. 8B. Then, the upper blade 4 and the rib pressing means 5 are lowered, and the rib pressing means 5 is a plate surface of the metal plate material, more specifically, the rib plate surface that is sent out by the width R of the rib in the transport direction. The upper blade 4 is inserted into the plate surface of the metal plate material in a state in which is pressed, and intermittent cuts are formed in the plate width direction of the metal plate material and each is widened.

  Next, after the upper blade 4 and the rib pressing means 5 are raised, the upper blade 4 is ½ of the mesh center direction distance LW in the longitudinal direction of the metal plate 1 as shown in FIG. Then, the upper blade 4 and the rib pressing means 5 are moved down, and the rib pressing means 5 feeds the plate surface of the metal plate material, more specifically, the rib width R in the transport direction. The upper blade 4 is inserted into the plate surface of the metal plate while pressing the plate surface of the rib, and the range of R from the front end portion and the range of R from the rear end portion are ribs 7 and a mesh 6 is formed therebetween. The ribbed expanded metal is separated from the metal plate 1.

  In the method of the present invention, when the upper blade 4 is inserted and the expanded metal with ribs processed from the metal plate 1 is cut off, the rib 7 positioned between the upper blade insertion blade portion and the mesh 6 is moved upward. Since the blade 4 is pressed from the side of the plate surface into which the blade is inserted, unlike the manufacturing method according to the prior art, the metal plate 1 is not bent at the boundary between the mesh 6 and the rib 7.

  The rib pressing means 5 is applied to the rib 7 simultaneously with the insertion of the upper blade 4 or immediately before the insertion of the upper blade 4 as the timing of pressing the rib 7 when the ribbed expanded metal is separated from the metal plate 1. The contact is sufficient, but the latter is desirable from the viewpoint of workability. That is, if the rib pressing means 5 is controlled so as to contact the rib immediately before the upper blade 4 is inserted, the reliability of rib pressing when the expanded metal with ribs is separated from the metal plate 1 is increased.

  The above is the outline of the method of the present invention, and the expanded metal with rib processed by the method has a flat finish in which the boundary portion between the mesh 6 and the rib 7 is not bent as shown in FIG. Therefore, according to the device of the present invention and the method of the present invention, the conventional flattening step can be omitted, thereby reducing the manufacturing time and the manufacturing cost.

  The expanded metal with ribs described above is the expanded metal with ribs in which the range of R from the front end and the range of R from the rear end are ribs 7, and a mesh 6 is formed between them, in other words, on both sides of the mesh 6. Although it is the expanded metal with a rib in which the rib 7 was formed, the expanded metal with a rib which can be processed by this invention apparatus and this invention method is not limited to this form. For example, the present invention can also be applied to an expanded metal with ribs in which ribs 7 are formed on one side of the mesh 6.

  In this case, when the rib 7 is formed and then the mesh 6 is formed and the processed expanded metal with ribs is separated from the metal plate material, the upper blade 4 is inserted and the intermittent cut in the plate width direction is performed. When forming and each widening for the first time, in other words, after the conveying means 2 feeds the metal plate 1 in the conveying direction by the width R of the rib, the upper blade 4 is inserted into the plate surface of the metal plate, When an intermittent cut is formed in the plate width direction of the plate material 1 and each is widened, the rib 7 positioned forward in the conveying direction from the upper blade insertion portion serving as a boundary between the rib 7 and the mesh 6 is used as the upper blade. What is necessary is just to press from the plate | board surface side to insert. Thereby, the metal plate material is not bent at the boundary between the mesh 6 and the rib 7.

  On the other hand, when the rib 6 is formed after the mesh 6 is formed and the processed expanded metal with ribs is cut off from the metal plate, the expanded metal with ribs processed from the metal plate 1 with the upper blade 4 inserted. What is necessary is just to press the rib 7 located between the said upper blade insertion blade site | part and the mesh 6 from the plate | board surface side which inserts the upper blade 4 when cutting off. Thereby, the metal plate 1 is not bent at the boundary between the mesh 6 and the rib 7.

Moreover, according to this invention apparatus and this invention method, it can process also about the expanded metal with a rib provided with the some mesh 6. FIG. For example, in order from the end of the plate, the first rib, the first mesh, the second rib, the second mesh, the third rib, etc., processed the expanded metal with ribs with 2 mesh and 3 ribs In the case where the upper blade is inserted, the first rib is formed when the intermittent cutting in the plate width direction and the respective widening are performed for the first time, that is, when the processing of the first mesh is started. The first rib positioned forward in the transport direction from the upper blade insertion portion serving as the boundary of the first mesh is pressed from the plate surface side where the upper blade is inserted.
Further, when the upper blade is inserted and the processing of the second mesh is started, the second rib positioned forward in the transport direction from the upper blade insertion portion serving as a boundary between the second rib and the second mesh. Is pressed from the plate surface side where the upper blade is inserted.
When the upper blade is inserted and the expanded metal with ribs is cut off from the metal plate, the third rib located between the upper blade insertion portion and the second mesh is inserted into the upper blade. Press from.
Thereby, the metal plate 1 is not bent at the boundary between the mesh and the rib. In addition, this example is an example for explaining that according to the device of the present invention and the method of the present invention, the expanded metal with ribs provided with a plurality of meshes can be processed, and the number of meshes and the number of ribs are It is not limited to examples.

  As the metal plate 1 that is the original plate of the expanded metal with ribs, these alloy plates are used in addition to non-ferrous metals such as steel, stainless steel, aluminum, zinc, copper, titanium, and brass, which are mainly composed of iron and iron. be able to.

  As the conveying means 2 for conveying the metal plate 1, it is desirable to use the conveying rollers shown in FIGS. 6 to 8, but the invention is not limited to this. This can be used. For example, a gripping means such as a clip for gripping the end portion of the metal plate material, a clamping means for sandwiching the end portion of the metal plate material, or a pressing means for pressing the plate surface or side surface of the metal plate material is provided. These can be used as long as they can be conveyed with a predetermined feed amount.

FIG. 10 is a side view of the device of the present invention viewed from the direction D in FIG. As shown in the figure, the lower blade 3, the upper blade 4 and the rib pressing means 5 constituting the device of the present invention are arranged on the exit side of the conveying means 2. And the lower blade 3 is arrange | positioned at the single side | surface side of the metal plate material 1, and the upper blade 4 and the rib press means 5 are arrange | positioned at the plate surface side opposite to this. Further, it is desirable that the blade portion of the lower blade 3 is arranged so as to coincide with the height of the pass line P as shown in FIG.
As a relative positional relationship between the lower blade 3 and the upper blade 4, the upper blade 4 is moved downward to enter the plate surface of the metal plate material to form intermittent cuts in the plate width direction of the metal plate material 1. At the same time, it is desirable to provide a predetermined clearance so that the lower blade 3 does not collide with the lower blade 3 when each is widened in the conveying direction, and the lower blade 3 is disposed on the conveying means 2 side as shown in the drawing.
Further, as a relative positional relationship between the upper blade 4 and the rib pressing means 5, the upper blade 4 is arranged on the conveying means 2 side.

  Although it does not specifically limit as a material of the lower blade 3, For example, die steel, high-speed steel, and a cemented carbide can be used.

The material of the upper blade 4 is not particularly limited, and for example, die steel, high-speed steel, or cemented carbide can be used.
Moreover, although it is about the shape of the blade edge | tip of the upper blade 4, the thing according to the mesh shape of the mesh to form can be used. FIG. 11 shows an example of the cutting edge of the upper blade 4. When the cutting edge illustrated on the left side of each of the drawings (a) to (e) is used, the mesh mesh shown on the right side of each figure can be formed.

  The material of the rib pressing means 5 is not particularly limited as long as it can press the plate surface of the metal plate 1 serving as the original plate. For example, iron, iron-based steel, stainless steel, aluminum, In addition to non-ferrous metals such as zinc, copper, titanium, and brass, these alloys or reinforced plastics can be used.

  Moreover, although the shape of the rib pressing means 5 shown in FIGS. 6-8 is a rod shape, it is not limited to this, For example, a plate-shaped board | plate material can be used. As the rod-shaped member, a round bar having a circular cross section, a square bar, a deformed bar such as a triangle can be used, and the rib pressing means 5 contacts and presses the plate surface of the metal plate material. Therefore, it is desirable to press the product so that the contact surface with the metal plate is flat or curved so that the product is not wrinkled. That is, when using a rod or plate with a corner, it is desirable to take measures such as adjusting the angle so that the corner does not hit the metal plate, or rounding the corner. Further, the surface may be subjected to surface processing such as plating or chemical conversion treatment.

  Further, the length of the rib pressing means 5 is preferably at least equal to the plate width of the metal plate material so that the metal plate material can be pressed uniformly in the plate width direction. It may be less than the plate width. Moreover, although the rib press means 5 shown to FIGS. 6-8 is comprised by the single item, you may comprise the rib press means 5 by the several member distribute | arranged to the plate width direction of the metal plate material.

  The means for raising and lowering the upper blade 4 and the rib pressing means 5 is not particularly limited, and for example, a hydraulic cylinder, an air cylinder or the like can be used. Further, the upper blade 4 and the rib pressing means 5 may be connected to independent lifting means, or the lifting means may be shared. For example, the rib pressing means 5 may be connected to the upper blade raising / lowering means provided in the manufacturing apparatus according to the conventional technique, and the raising / lowering of the upper blade 4 and the rib pressing means 5 may be interlocked. The same applies to the means for moving the upper blade 4 in the plate width direction of the metal plate material.

  An instruction is given to the conveying means 2 to feed the metal plate material by the rib width R and the step width W at a predetermined timing, and the upper blade 4 is moved up and down at a predetermined timing, and the rib pressing means at the same predetermined timing. The control means for raising and lowering 5 is not particularly limited, and for example, a computer (electronic computer) can be used. The electronic control means may be incorporated in the apparatus of the present invention or installed outside the apparatus. Further, the control means for performing the control is not limited to electronic control, and for example, mechanical control combining a cam and a clutch may be performed.

  Although the apparatus and method of the present invention described above are those for transporting the metal plate 1 serving as the original plate in the horizontal direction as shown in FIGS. 6 to 8, the present invention is not limited to this. That is, the device of the present invention and the method of the present invention can be applied even when the metal plate 1 is transported in an oblique direction or a vertical direction because the installation space of the device cannot be secured.

It is a schematic diagram of the expanded metal with a rib, (a) is a whole figure of the expanded metal with a rib, (b) is an enlarged view of the mesh of a mesh, (c) is the sectional view on the AA line of (b). It is a figure which shows the manufacturing apparatus and manufacturing method which concern on a prior art in time series. It is a figure which shows the manufacturing apparatus and manufacturing method which concern on a prior art in time series. It is a figure which shows the manufacturing apparatus and manufacturing method which concern on a prior art in time series. It is a side view of the processed goods manufactured by the conventional method seen from the B direction of FIG.4 (c). It is a figure which shows this invention apparatus and this invention method in time series. It is a figure which shows this invention apparatus and this invention method in time series. It is a figure which shows this invention apparatus and this invention method in time series. It is a side view of the expanded metal with a rib manufactured by the method of this invention seen from the C direction of FIG.8 (c). It is a side view of this invention apparatus seen from the D direction of FIG.8 (c). It is a schematic diagram which shows the example of the shape of the blade edge | tip of an upper blade, and the mesh shape of the mesh formed using the said blade edge | tip.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Metal plate material 2 Conveying means 3 Lower blade 4 Upper blade 5 Rib pressing means 6 Mesh 7 Rib LW Distance between center of long direction of mesh SW Distance of center between short direction of mesh L Length of product in mesh length direction P Pass line R Rib width S Mesh short direction Product length T Plate thickness W Step width

Claims (1)

The upper blade is inserted into a predetermined range of the metal plate material to be conveyed to form staggered cuts, and each is widened, and the widened range is formed in a mesh shape to form cuts. In the manufacturing method of the expanded metal with ribs that leaves the both sides of the mesh as flat ribs for the range that was not, and separates the expanded metal with ribs thus processed from the metal plate,
When the upper blade is inserted and the intermittent cuts in the plate width direction and the respective widening are performed for the first time, the rib positioned forward in the conveying direction from the upper blade insertion portion that becomes the boundary between the rib and the mesh is raised. Press the blade from the side of the plate that enters the blade,
When cutting the expanded metal with ribs from the metal plate by inserting the upper blade, the rib located between the upper blade insertion blade part and the mesh is pressed from the plate surface side where the upper blade is inserted. Manufacturing method of expanded metal with ribs.

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