JPH08132164A - Bending die and bending machine for metal net - Google Patents

Abstract

PURPOSE: To prevent the approximately cylindrical cage shape of the end part of metal net sheet from flexing to drum shape due to the deflection by preventing deflection in bending while a male die supports the inside of cylindrical cage shape. CONSTITUTION: A male die 13 is divided into plural pieces in the axial direction of approximately cylindrical cage shape, this dividing interval coincides with the interval of longitudinal wire 51 laid in the advancing direction of a metal net sheet 50. Further, a dividing clearance is larger than the diameter of longitudinal wire stock 51, after bending by shifting the metal net sheet 50 to left/right, the metal net sheet 50 is removed from die. Each divided male die piece is strongly supported respectively, reflection quantities are not changed between each divided male die piece, the approximately cylindrical cage part of metal net sheet 50 is not deformed to drum shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding die for bending the end portion of a wire netting sheet into a substantially cylindrical cage, and an end portion of the wire netting sheet which is repeatedly bent downward during bending. The present invention relates to a wire mesh bending machine that bends into a cage.

[0002]

2. Description of the Related Art A wire netting knitted from longitudinal and lateral (orientation) wire rods
Fences made by welding the intersections of the girders are lightweight yet strong, and have come to be widely used in recent years due to the realization of a good design that matches modern buildings. In this welded wire mesh sheet fence, a tubular portion for inserting a frame or a column is formed at the end of the wire mesh sheet, but the tubular portion is also expected to have various tasteful designs from a simple shape. It is rare. The conventional bending method is to apply a core metal along the end of the welded wire mesh sheet fence and bend it so that the end of the wire mesh sheet is wrapped around this core metal, or move the tool around the core metal up and down. It was pressed in the front-back direction and bent into a substantially tubular shape.

[0003]

However, since this cored bar is applied to the wire mesh sheet while being supported at both ends, it is longer than the length of the wire mesh sheet end. When the bending force is applied by the tool, even if the pressing force is applied to the core metal with a uniform load along the longitudinal direction, the rigidity of the core metal is low, and therefore the bent wire mesh sheet is The center of the sheet becomes more bent, and the end portions of the wire mesh sheet become drum-shaped as a whole. As it is, the appearance is spoiled, so it was necessary to reshape the drum shape into a tubular body. In addition, since it is pressed and bent from the top, bottom, front and back directions,
The handling of the wire mesh sheet was complicated and the cost was high. The present invention has been made to solve the above problems, and an object of the present invention is to provide a wire mesh bending die and a wire mesh bending machine that have high rigidity, can be easily die-cut, and can perform uniform molding. .

[0004]

In order to achieve the above object, the first aspect of the present invention is such that the end portion of a wire mesh sheet which is knitted by vertical and horizontal wire rods by an upper female mold and a lower male mold is substantially omitted. A mold for bending into a cylindrical basket shape; the male mold has a shape that forms substantially the upper half of the cross section of the substantially cylindrical cage end, and is the same as the vertical wire rod pitch of the wire mesh sheet. Divided into intervals,
Between the adjacent divided male dies, there is a skimmer that can be die-cut by sliding the bent wire mesh sheet end portion by a predetermined distance in the axial direction; the male die has a wire mesh sheet supported by the female die. It is a wire-bending type, characterized in that it is a rotary type in which the end portion of the gutter is repeatedly bent downward and bent into a substantially cylindrical cage shape.

According to a second aspect of the present invention, there is provided a folding machine for bending a longitudinal end portion of a wire netting sheet, which is knitted in vertical and horizontal wires by upper and lower molds, into a substantially cylindrical cage shape; the mold is on a bed. And a male die for supporting the inside of the substantially cylindrical cage end to be formed, and an end of the wire mesh sheet vertical wire which is connected to the upper die holder at the lower end of the ram and is fed by a predetermined dimension. The male mold is divided into a plurality of parts in the axial direction of the substantially cylindrical cage end to be molded by repeatedly bending downward and bending into a substantially cylindrical cage shape. And has a clearance larger than the diameter of the vertical wire rod in order to cut the end of the wire mesh sheet after bending between the adjacent split male dies; A rotary type in which the end of the wire mesh sheet supported by the mold is repeatedly bent downward to be bent into a substantially cylindrical cage A butt device that regulates the bending position of the end of the wire mesh sheet is provided in the center of the machine or in front of or behind the mold, and the end of the wire mesh sheet after bending is used as the upper surface of the male mold. A die-cutting cylinder is provided for moving a predetermined distance from the clearance in the axial direction to perform die-cutting from the male die, and a lifter for raising the wire mesh sheet after die-cutting in front of or in front of and behind the die. It is characterized by further comprising a progressive feeding means for feeding the wire mesh sheet to the bending position, feeding it in sequence, and further discharging it out of the machine.

According to a third aspect of the present invention, the female type is a rotary type having a crescent-shaped cross-section, and the corresponding male type has a cross-sectional shape corresponding to the upper half circle of the substantially cylindrical cage-shaped end portion, and each divided The male mold is supported on the base in a cantilevered manner at the rear part of the upper semicircular cross section, and has an burring part formed on one side in the axial direction of the cylindrical cage end part for avoiding interference with the winding end of the vertical wire. The wire mesh bending mold according to 1 or 2. According to a fourth aspect of the present invention, the upper end of the upper die holder is rotatably attached to an axis parallel to the bending line of the upper die holder so as to upwardly bend the neck portion formed with the substantially cage end in cooperation with the male die. When the auxiliary upper mold and the wire mesh sheet end portion are repeatedly bent downward, the auxiliary upper mold is inverted to the retracted position,
The wire mesh folding machine according to claim 2, further comprising: an auxiliary upper mold rotation cylinder that rotates from a retracted position to a female mold proximity position at the final stage bending.

According to a fifth aspect of the present invention, in the abutting device, the abutting members which are arranged near both ends of the bed at the center of the machine and which are formed in a step shape, and the bending length of the wire mesh sheet end portion in each step are provided. The lifter is composed of a butting cylinder for moving the butting member in a stepwise manner in order to make a sequential determination; the lifter and the lifter move the vertical wire rod to perform die cutting and then raise the wire mesh sheet and transfer it to the progressive feeding means. And a reaction force receiving member in the center of the machine, and a male die, a female die, an auxiliary upper die, a die cutting cylinder and a lifter are arranged symmetrically about the reaction force receiving member. It is characterized by being

[0008]

The wire mesh sheet is intermittently fed onto the male mold. By repeatedly pressing the end portion of the wire mesh sheet on the male mold by the female mold, it is bent into a substantially cylindrical cage shape. After bending, if the wire mesh sheet is shifted in the axial direction of the substantially cylindrical cage end portion, the vertical and horizontal wire rods arranged in the forward direction can be taken out from the gap between the divided male mold pieces. The male mold is not long like the conventional one, but is divided into a plurality of divided male mold pieces, and since the divided male molds are supported by themselves, the male mesh sheet has a substantially cylindrical cage-shaped portion at the end thereof. The center can be bent evenly without bending.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be specifically described with reference to the drawings. 1 is a front view of a folding machine equipped with a wire mesh sheet folding die, FIG. 2 is a side view, FIG. 3 is a plan view, and FIG. 4 is an enlarged side view of a main part A of FIG. . The wire-mesh bending mold is connected to the male mold 13 which is placed on the bed 2 and supports the inside of the substantially cylindrical cage-shaped end of the wire-mesh sheet to be molded, and the upper mold holder -21 at the lower end of the ram 3 to have a predetermined size. It is composed of a female die 22 that is bent in a substantially cylindrical cage shape by repeatedly bending down the end portions of the wire mesh sheets that are sequentially fed. Male 1
Reference numeral 3 has a cross-sectional shape that forms substantially the upper half of the cross-section of the substantially cylindrical cage end portion 53, and the wire rod pitch 50 of the wire mesh sheet 50 in the vertical direction.
It is divided at the same intervals as in FIG. 7 and can be die-cut by sliding a predetermined distance in the axial direction of the cylindrical cage of the wire mesh sheet end portion 53 after bending between the adjacent divided male dies. 16 (FIGS. 6 and 7). The split male die 13 has a cross-sectional shape corresponding to the upper half circle of the substantially cylindrical cage end portion 53 of the wire mesh sheet to be bent and formed, and each split male die has a support arm portion at the rear portion of the upper half circle cross section. The cantilever portion 15 is supported by the base 12 in a cantilever manner by 14 and avoids interference with the winding end of the vertical wire 51 on one side in the axial direction of the cylindrical cage end portion.
(FIGS. 4 and 6). The gap 16 between the divided male dies 13 is slightly larger than the thickness of the vertical wire 51 (FIG. 7).

On the other hand, the female die 22 is a rotary type in which the end portion of the wire mesh sheet is repeatedly bent downward to bend it into a substantially cylindrical cage shape. The female die 13 in the illustrated example is a long one having a length along the edge of the wire mesh sheet, is a crescent-shaped rotary die with a cross-sectional deformation of about 240 degrees in the center angle, and the arc portion of the female die is the upper die holder. It is fitted in the fitting recessed groove 25 formed in 21. The side of the female die 22 that faces the arc portion has a valley-shaped recess, and one of the edges has an edge 22 that serves as a fulcrum when the die is rotated.
A is provided, and an edge portion 22b serving as a pressure point is provided on the other side, and a recess 22c is formed on the outer side of the edge portion 22b so as to avoid interference with the horizontal wire 52 during mold rotation.

(Overall Structure) The wire mesh bending machine 1 is a hydraulic press brake equipped with a bending die for bending the wire mesh sheet 50. This folding die is a lower die assembly 1
0 and the upper mold assembly 20. The lower mold assembly 10 is attached to a lower mold holder 11 arranged on the bed 2, and has a male mold 13 that supports a substantially cylindrical cage-shaped interior of a wire mesh sheet 50 that can be bent. The male die 13 is divided into a plurality of pieces in the axial direction of the substantially cylindrical cage (FIG. 1). This division interval corresponds to the interval of the vertical wire members 51 arranged in the forward direction of the wire mesh sheet 50. That is, the wire mesh sheet 5
0 is configured by welding a vertical wire (bus bar) 51 and a horizontal wire (silicon wire) 52 (FIGS. 3 and 7). The end of the vertical wire 51 is bent into a substantially cylindrical cage shape.

The wire netting sheet bending machine uses the above-mentioned upper and lower male molds 13 and female molds 22 for bending the workpiece (wire mesh sheet) 50. An abutting device 40 that regulates the bending position forward is provided, and a reaction force receiving member 27 is provided at the lower end of the ram that abuts the center of the machine. Further, with the reaction force receiving member 27 as the center, the male mold 13 and the female mold 2
2. Auxiliary upper die 30, feeding means (feeding conveyor 6 and discharging conveyor 7), side guide rail 8, die cutting cylinder 9, lifter 35 for raising the wire mesh sheet 50 after die cutting, and feed conveyor 6. The side positioning cylinders 19 for correctly placing the wire mesh sheet supplied in step 1 on the male mold are arranged in symmetrical positions,
This is a folding machine that bends the ends of the wire mesh sheet 50 into a substantially cylindrical cage shape. If the die-cutting cylinder 9 has a side positioning function, the side positioning cylinder can be omitted.

(Upper and Lower Mold Assembly) The upper mold assembly 20 is fixed to the ram 3 (FIGS. 1 and 2). The ram 3 moves up and down with respect to the bed 2 by the main cylinder 5. A rotary mold, which is a female mold 22, is rotatably provided on a holder 21 that constitutes the upper mold assembly 20 (FIG. 4).
The female die 22 repeatedly presses the wire mesh sheet 50 on the male die 13, and is biased counterclockwise by a spring 23 so as to return to the initial rotating position. Further, a reaction force receiving member 27 is provided so as to project downward at a position corresponding to the machine center of the upper mold assembly 20. The reaction force receiving member 27 is fitted in the reaction force receiving groove 17 formed in the lower die holder 11, and the upper die assembly 20 and the lower die assembly 10 are moved in the front-rear direction (left-right direction in FIG. 4) during processing. There is no gap. In addition, near the female die 22 of the upper die assembly 20,
A step portion 26 for holding the pressure transmitting surface of the upper upper die 30 is formed when the upper upper die 30 is reversed and rotated as described below.

(Auxiliary Upper Mold 30) The upper mold assembly 20 is provided with an auxiliary upper mold 30. This auxiliary upper mold 30
Is for upward bending, and is for bending the neck portion 55 (FIG. 16), which is bent to the substantially cylindrical cage end portion 53 of the wire mesh sheet 50, in the direction opposite to the bending by the female die 22. Is. That is, it is rotatably attached to an axis parallel to the bending line on the side of the upper die holder, and is inverted to the retracted position when the wire mesh sheet end portion is repeatedly bent downward (solid line in FIG. 4). From the retracted position to the position close to the female mold 13 (the imaginary line in FIG. 4) so that the neck 55 of the substantially basket-like basket end is bent upward in cooperation with the male mold when the final end of the bent end is bent. Rotate. Blocks 29 are provided at both ends of the upper die holder 21 in the die length direction to incorporate a rotating means for an auxiliary upper die. The auxiliary upper molds 30 are provided in the same number as the divided male molds 13 and have a common shaft 31.
It is stuck to. The rotating means includes a drive cylinder (rotating means) 32 provided on the block 29, a rack 34 formed on the piston rod of the drive cylinder 32, a pinion 33 meshing with the rack 34, and a pinion 33 axis. The shaft 31 is fixed to the shaft 31.

(Wire mesh feeding conveyor 6) The wire mesh sheet 50 is advanced between the male die 13 and the female die 22, and this advance is carried out by the wire mesh feeding (forward) conveyor 6 (FIGS. 2 to 4). Be seen. The wire mesh sheet 50 whose end portion in the forward direction is bent by this forward movement is further sent out to the right in the figure by the wire netting conveyor 7 (FIGS. 2 and 3). At this time, a reaction force receiving member 27 is provided at the center of the machine so that the end portion of the wire netting sheet 50 at the rear side in the forward direction can be bent in the same manner.
Side positioning means for moving the vertical wire rods of the auxiliary upper die, the die cutting cylinder, the lifter, and the wire mesh sheet are arranged in front-rear symmetrical positions. In the wire mesh sheet folding machine 1 of this embodiment, the forward and backward directions are symmetrical (FIGS. 2 and 3). The lifter 3 is attached to a part of the gap 16 of each of the divided male molds 21.
5 (FIG. 1, FIG. 2, FIG. 4) is attached, and the lifter cylinder 36 can move up and down. By lifting the lifter bar 37, the wire mesh sheet 50 can be easily lifted and discharged after the die cutting.

(Side Positioning Cylinder) As described above, the wire netting sheet 50 is sent by the wire netting feed-in conveyor 6 and the wire netting feed-out conveyor 7. At this time, the wire netting sheet 50 is provided on the left and right with respect to the feeding direction. The side guide rail 8 is used as a reference. However, there is a slight gap between the side guide rail 8 and the wire mesh sheet 50, and finally, the side is positioned by the die cutting cylinder 9 to perform the lateral positioning.
That is, by side positioning, the wire mesh sheet 5
By moving 0 in the left-right direction (the axial direction of the substantially cylindrical cage end portion 53 of the wire netting sheet 50), the vertical line 15 constituting the wire netting sheet 50 is positioned in the split male type skimmer 16. Then, at this time, the lifter 35 works to move the wire net 50 into the male mold 13.
You can pull it out.

(Abutting device 40) When the bending process is performed, the wire mesh sheet 50 must be intermittently advanced by a predetermined size, and the predetermined size is determined by the abutting cage 40. That is, as shown in FIG.
The abutting device 40 is attached to the position where the front end of the wire netting sheet 50 sent in and the rear end of the wire netting sheet 50 sent out are located. This abutting device 40
In the abutting cylinder 45, four types of abutting blocks 41, 42, 43 and 44 are provided so as to project in the front-back direction with respect to the gauge base that slides in the left-right direction of the wire mesh sheet 50. The amount of protrusion differs depending on each abutting block 41, 42, 43, 44, and
Determine the forward dimension of the gland 50.

(Abutting block) Abutting cylinder 4
When 5 is fully extended, all butting blocks are in a state of being retracted from the space where the wire mesh sheet 50 is fed (chain line in FIGS. 3 and 7). If the first butting block 41 having the largest protrusion amount is retracted, the second butting block 42 having the second largest protrusion amount works to determine the forward dimension of the wire mesh sheet 50. Similarly, if the second butting block 42 is retracted, the third
When the third butting block 43 of FIG. 4 works, and the third butting block 43 of FIG.

The operation of this embodiment will be described below with reference to FIGS. (First Step) First, the wire netting sheet 50 is fed by the wire netting feeding conveyor 6. At this time, the butting cylinder 45 is contracted, and the first to fourth butting blocks 4 are
1, 42, 43, and 44 are arranged in the feed space of the wire mesh sheet 50, and only the first butting block 41 having the largest projection amount works to contact the tip portion of the wire mesh sheet 50. (Fig. 9). Thereby, the predetermined advancement dimension of the wire mesh sheet 50 required for the first step can be obtained. Thereafter, the ram 3 descends, and the female die 22 of the upper die assembly 20 rotates the arrow as shown by the arrow to press the wire mesh sheet 50 onto the male die 13 to perform the first downward bending (Fig. 10). Next, the ram 3 rises and the female die 22 separates from the male die 13. Then, the wire net feeding conveyor 6 works again and the wire net sheet 50 advances.

(Second step) At this time, the abutting cylinder 45 extends a little, the first abutting block 41 is retracted from the feeding space of the wire mesh sheet 50, and the second abutting block 42 is moved to the wire mesh sheet. Touches the tip of the belt 50. As a result, the required predetermined forward dimension in the second step is obtained (FIG. 11). After that, the ram 3 descends again, and the female mold 2
2 presses the end of the wire mesh sheet 50 onto the male mold 13.
At this time, the reaction force receiving member 27 is fitted into the reaction force receiving groove 17 to support the bending reaction force. In this way, the wire mesh sheet 50 is gradually bent, and is subjected to the second downward bending along the fan-shaped arc of the male die 13 (FIG. 12). After processing,
The ram 3 rises again, and the female die 22 separates from the male die 13.

(Third Step) While the ram is rising after the second step is finished, the wire mesh sheet 50 advances again, the end portion thereof contacts the third butting block 43, and the necessary predetermined To obtain the advance dimension of (FIG. 13). Next, the third downward bending is performed by the downward rotation of the female die 22 (FIG. 14).

(Fourth Step) Next, in the fourth step, not only the male die 13 is bent along the arc of the fan shape, but also the neck is bent in this manner to form the substantially cylindrical cage end portion 53. Bending of the portion 55 (FIG. 15) is performed. That is, when the auxiliary mold cylinder 32 works, the rack 34 descends, and the pinion 33 rotates, the auxiliary upper mold 30 rotates around the shaft 31 and projects toward the lower lower mold assembly 10. (Fig. 4). Further, the butting cylinder 45 further extends, and only the fourth butting block 44 remains in the feed space of the wire mesh sheet 50. When the wire netting sheet 50 is advanced by the wire netting feeding conveyor 6 in this state, the tip of the wire netting sheet 50 contacts the fourth butting block 44, and a predetermined forward dimension is obtained. In this state, the ram 3 descends, and the auxiliary upper mold 30 presses the wire mesh sheet 50 to start bending. At the same time, the front end of the female die 22 presses the wire mesh sheet,
The wire mesh sheet 50 starts to be bent along the shape of the male mold 13. Further, the bending by both proceeds, and finally the wire mesh sheet 50 having the end bent into the substantially cylindrical cage 53 can be obtained (FIG. 16).

(Die-cutting) After the bending process is completed in this way, the die-cutting cylinder 9 works to make the wire mesh sheet 50.
Moves in the left-right direction (axial direction of the bag-like end) by a distance s. By this movement, the vertical wire member 51 of the wire netting sheet 50 is positioned at the gap 16 of the split male die 13 (FIG. 9). afterwards,
The lifter cylinder 36 works, the lifter bar 37 rises,
Lift the wire mesh sheet 50 (FIG. 16). This allows
The vertical wire member 51 of the wire netting sheet 50 passes through the gap 16,
The wire mesh sheet 50 is removed from the male mold 13. After that, the wire netting sheet 50 is moved to the right side in FIG. 2 by the wire netting feeding conveyor 6 and the wire netting feeding conveyor 7.

The wire mesh sheet 50 having the front end processed is transferred from the delivery conveyor 6 to the delivery conveyor 7. Here, by sequentially feeding the delivery conveyor in the opposite direction, the rear end portion of the wire netting sheet 50 can be bent into a substantially cylindrical cage 53 through the same steps as described above. That is, the abutting cylinder 45 intermittently retracts the wire mesh sheet 50 by a predetermined size (moves leftward in FIG. 2).
The same bending process can be performed by moving forward and repeating the pressing by the female die 22. Then, again, the metal mesh sheet 50 is die-cut by the operation of the die-cutting cylinder 9 and the lifter bar 37, and the wire-mesh feed-out conveyor 7 completely feeds it.

The male die 13 does not support a long one at both ends like a conventional cored bar, but is divided into a plurality of pieces and each divided male die is supported in its own cantilever state to increase rigidity. , The pressing force applied to the female die 22 is strong base portion 12
And it is fully supported by the support arm portion 14. Further, the bending caused by the pressing of the female die 22 is uniform in each divided male die piece. Therefore, it is possible to prevent the substantially cylindrical cage-shaped end portion 53 of the wire mesh sheet 50 from being deformed like a drum due to the large bending of the center like a conventional metal core supporting both ends. Therefore, the appearance of the wire mesh sheet 50 that has been processed is not impaired. Further, it is not necessary to modify the drum-shaped deformation.

Further, the end portion 53 of the wire mesh sheet 50 can be easily bent by repeatedly advancing the wire mesh sheet 50 onto the male mold 13 by a predetermined dimension and repeatedly pressing by the female mold 22. . Therefore, as compared with the conventional case where the core metal applied to the end portion of the wire mesh sheet 50 is pressed and bent from above and below and with a tool, the wire mesh sheet 50
Is easy to handle, and the processing cost can be kept low. In addition, in the above examples, the end portion 53 of the wire mesh sheet 50 was substantially cylindrical (FIG. 16), but in other examples, a substantially cylindrical shape other than the substantially cylindrical shape, for example, a regular polygonal cross section. It may be the bent end portion 53a (FIG. 17) having it or the bent end portion 53b (FIG. 18) having a triangular cross section.

[0027]

As described above, claim 1 or 2
According to the invention, since the male die is divided into a plurality of pieces and each divided male die piece is supported by itself, the center of the long male die (core bar) may bend as in the conventional case. Therefore, it is possible to prevent the substantially cylindrical shape of the end portion of the wire mesh from deforming like a drum. For this reason, the appearance of the wire net can be improved, and the labor for modifying the drum shape into a substantially cylindrical shape is not necessary. In addition, the wire mesh can be bent in a substantially cylindrical shape by intermittently advancing the wire mesh onto the male mold by a predetermined size and repeatedly pressed by the female mold. The bending cost can be reduced. Moreover, since the male die has a cross-sectional shape corresponding to the upper half of the substantially cage end of the wire mesh, the weight of the male die can be reduced, and the weight of the wire mesh folding machine can be reduced. In addition, the rigidity of the mold is high, the mold can be easily removed, and uniform molding is possible.

[Brief description of drawings]

FIG. 1 is a front view of a wire mesh folding machine including a folding die of the present invention.

FIG. 2 is a plan view showing a state in which an upper die of FIG. 1 is removed.

FIG. 3 is a side view of FIG.

FIG. 4 is an enlarged side view of portion A of FIG.

5 is a vertical cross-sectional front view taken along the line BB of FIG.

FIG. 6 is a perspective view of a split lower mold.

FIG. 7 is a plan view of the butting device.

FIG. 8 is a front view of FIG. 7;

9A and 9B show a butted state in the first bending step, where FIG. 9A is a side view and FIG. 9B is a front view.

FIG. 10 is a side view showing a first downward bending state according to the first step.

FIG. 11 is a side view showing the butted state in the second bending step.

FIG. 12 is a side view showing a state of being bent downward from the state of FIG.

FIG. 13 is a side view showing the butted state in the third bending step.

FIG. 14 is a side view showing the state of being bent downward from the state of FIG.

FIG. 15 is a side view showing a state in which the wire mesh sheet is moved forward and the fourth butting is performed after completion of the third step.

FIG. 16 is a side view showing a fourth bending step.

FIG. 17 is an enlarged view of a main part of a wire netting end processed in another embodiment.

FIG. 18 is an enlarged view of a main part of a wire mesh end portion processed in still another embodiment.

[Explanation of symbols]

 1 Wire Mesh Bending Machine 2 Bed 3 Ram 4 Guide Post 5 Main Cylinder 6 Wire Mesh Feeding Conveyor 7 Wire Mesh Feeding Conveyor 8 Side Guide Rail 9 Die Cylinder 10 Lower Die Assembly 11 Lower Die Holder 12 Male Base Part 13 Male ( Lower mold 14 Male support arm 15 Split male edge 16 Spacer 17 Reaction force receiving groove 19 Side positioning cylinder 20 Upper mold assembly 21 Upper mold holder 22 Female mold (upper mold, rotary mold) 23 Spring 24 Female tip groove 25 Female fitting recess 27 Reaction force receiving member 30 Auxiliary upper die 31 Shaft 32 Auxiliary upper die rotating cylinder 33 Pinion 34 Rack 35 Lifter 36 Lifter cylinder 37 Lifter bar 40 Abutting device 41, 42, 43, 44 Butt block 45 Butt cylinder 46 Rod 47 Base 50 Wire mesh sheet 51 Vertical wire rod 52 Horizontal wire rod 53 Cylindrical cage end portion 55 Neck portion p Vertical wire rod pitch s Die cutting movement distance

Claims (5)

[Claims] 1. A mold for bending an end portion of a wire netting sheet, which is knitted by vertical and horizontal wire rods by an upper female mold and a lower male mold, into a substantially cylindrical cage shape; It has a shape that forms almost the upper half of the cross section of the substantially cylindrical basket-like end portion, and is divided at the same interval as the longitudinal wire rod pitch of the wire mesh sheet, and after bending between adjacent divided male dies. Has a skimmer that can be die-cut by sliding the end of the wire mesh sheet of the present invention by a predetermined distance in the axial direction; the male mold repeatedly bends down the end of the wire mesh sheet supported by the female mold to form a substantially cylindrical basket. A wire-mesh folding mold, which is a rotary type that is bent into a shape. 2. A folding machine for bending a longitudinal end portion of a wire netting sheet, which is knitted by vertical and horizontal wire rods by upper and lower molds, into a substantially cylindrical cage shape; the molds are arranged on a bed. The end of the wire mesh sheet vertical wire that is connected to the male die that supports the inside of the substantially cylindrical cage-shaped end to be formed and the upper die holder at the lower end of the ram and is sequentially fed by a predetermined dimension is repeatedly bent downward. The male mold is divided into a plurality of parts in the axial direction of the end of the substantially cylindrical cage to be molded by dividing the male mold into a substantially cylindrical basket-like shape. It has a gap larger than the diameter of the vertical wire rod in order to cut the end of the wire mesh sheet after bending between the adjacent divided male dies, which is consistent with the spacing; the male dies are supported by the female dies. This is a rotary type in which the end of the wire mesh sheet is repeatedly bent downward and bent into a substantially cylindrical cage shape; Is provided with a butting device for controlling the bending position of the end of the wire mesh sheet at the front or the front of the mold, and the end of the wire mesh sheet after completion of bending is placed between the upper surface of the male mold and the gap. A die-cutting cylinder for moving a predetermined distance in the axial direction for die-cutting from a male die is provided, and a lifter for raising the wire-mesh sheet after die-cutting and a wire-mesh sheet are provided in front of or in front of and behind the die. A wire mesh folding machine comprising means for supplying the material to a bending position, feeding it in sequence, and discharging it out of the machine. 3. The female mold is a rotary crescent-shaped cross-section, and the corresponding male mold has a cross-sectional shape corresponding to the upper half circle of the substantially cylindrical basket-shaped end, and each divided male mold is The back end of the upper semi-circular cross section is supported in a cantilevered manner on the base, and an edge portion for avoiding interference with the winding end of the vertical wire is formed on one side in the axial direction of the cylindrical cage end. The wire mesh folding mold described in. 4. An auxiliary member rotatably attached to an axis parallel to the bending line on the side of the upper die holder in order to upwardly bend the neck portion formed at the substantially cage end of the wire mesh sheet. Rotation of the upper die and the auxiliary upper die which is inverted to the retracted position during repeated downward bending of the end portions of the wire mesh sheet and rotated from the retracted position to the proximity of the female die during the final bending step. The wire mesh folding machine according to claim 2, further comprising a cylinder. 5. The abutting device is arranged near the both ends of the bed at the center of the machine, and has a step-shaped abutting member, and sequentially determines the bending length of the wire mesh sheet end in each step. Therefore, the lifter is composed of an abutting cylinder for moving the abutting member in a stepwise manner; the lifter moves the vertical wire rod to perform die cutting, and then lifts the wire mesh sheet to transfer it to the progressive feeding means and the lifter actuator. And a reaction force receiving member at the center of the machine, and a male die, a female die, an auxiliary upper die, a die cutting cylinder, and a lifter are arranged in front-rear symmetrical positions with the reaction force receiving member as a center. The wire mesh folding machine described in 2.