JP2013255938A - Device for forming mesh-like through-hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for forming mesh-like through-holes, in which a thrust receiver of one metal die positioned downstream side where a workpiece flows can be omitted and further productivity can be improved.SOLUTION: A workpiece feeding direction P1 in a first press part A is set in a direction reverse to a workpiece feeding direction P2 in a second press part B and in a horizontal direction Q approaching the other press part. Upper dies 35L, 35R apply piece-punching press motion to flat plates W1, W2 and cut in them to form a plurality of slits in a zigzag pattern, in every reciprocating motion in the horizontal direction Q. The upper dies 35L, 35R of each press part enter the space region K between a first movable lower die 18L and a second movable lower die 18R of both press parts, in the piece-punching press motion.

Description

  The present invention relates to a mesh-like through-hole forming apparatus.

  As the mesh-shaped through-hole forming device, the device of Patent Document 1 has been proposed by the present applicant. An example of the mesh-like through-hole forming apparatus is a lath cut metal forming apparatus. In this type of molding apparatus, as shown in FIG. 8, a lower mold support 12 is fixed to the upper surface of the bed 11, and the feed direction P of the metal flat plate W is set on the upper surface of the lower mold support 12. An accommodation groove 12a is formed so as to extend in the orthogonal horizontal direction Q (direction orthogonal to the paper surface). First to third guide metals 13, 14, 15 are fixed to the bottom surface 12b of the housing groove 12a and the vertical surfaces 12c, 12d on the upstream side and the downstream side in the feed direction P of the flat plate W. The lower slider 16 is accommodated by the guide metals 13 to 15 so as to be reciprocally slidable in the horizontal direction Q. A movable lower mold 18 is fixed on the lower slider 16 through a shim 17 for height adjustment.

  As shown in FIG. 9, the movable lower mold 18 includes an upper surface 18 a as a molding surface for molding the flat plate W and a vertical surface 18 b on the downstream side in the feed direction P of the flat plate W. On the vertical surface 18b of the lower mold 18, a plurality of protrusions 18c are integrally formed at a predetermined pitch in the horizontal direction so that the protrusions 18c are directed vertically, and a forming groove 18d is formed between the protrusions 18c. Has been. As shown in FIG. 9, a shearing blade 18e is formed at the boundary between the upper surface 18a and the vertical surface 18b. The shearing blade 18e is an example of a lower blade of a movable lower mold. As shown in FIG. 8, the upstream vertical surface 18 f in the feed direction P of the flat plate W of the movable lower mold 18 is in contact with the vertical surface of the vertical wall 16 b formed integrally with the lower slider 16.

The lower slider 16 and the movable lower mold 18 are reciprocated in the horizontal direction Q (direction perpendicular to the paper surface) shown in FIG.
As shown in FIG. 8, an upper mold support 26 is installed above the lower mold support 12 so as to be reciprocated in the vertical direction via an elevating drive mechanism (not shown). An upper mold holder 27 is attached to the lower surface. An accommodation groove 27a is formed on the lower surface of the upper mold holder 27 so as to extend in the horizontal direction Q. An inner top surface 27b of the accommodation groove 27a and a vertical surface 27c on the upstream side in the feed direction P of the flat plate W The first to third guide metals 30 to 32 are attached to the downstream vertical surface 27d by bolts (not shown). An upper slider 33 is in contact with each of the guide metals 30 to 32 so as to be slidable in the horizontal direction Q. An upper die 35 is accommodated and fixed in an accommodation groove 33 a formed on the lower surface of the upper slider 33 so as to extend in the horizontal direction Q.

  As shown in FIGS. 9 and 10, a plurality of protrusions 35a and a plurality of recesses 35b engaged with the protrusions 18c and the forming grooves 18d of the movable lower mold 18 are formed on the lower surface of the upper mold 35. The pitch is formed. 8 and 9, the boundary between the upstream vertical surface 35c and the protrusion 35a in the feed direction P of the flat plate W of the upper die 35 is a shearing blade 18e of the movable lower die 18. And corresponding shearing blades 35d.

  A push screw 39 is screwed into a wall portion having a vertical surface 33 b on the downstream side in the feed direction P of the accommodation groove 33 a of the upper slider 33. The tip of the push screw 39 penetrates the wall portion and presses the upper die 35 in the counter feed direction, thereby fixing the upper die 35 to the upper slider 33.

  As shown in FIG. 10, the movable lower mold 18 is meshed with the moved upper mold 35, so that the corrugated portion is formed on the leading edge of the flat plate material W by performing a punching process. Thereafter, the upper die 35 is moved upward to move the flat plate W in the feed direction P in the separated state of the movable lower die 18 and the upper die 35, and the movable lower die 18 and the upper die 35 are moved in the horizontal direction Q. The above-described forming operation of the corrugated portion is performed by displacing the protrusion 18c and the protrusion 35a by a half of the arrangement pitch. By repeating this operation, the lath cut metal 36 having a large number of through holes 36a shown in FIG. 6 is formed.

JP 2011-115832 A

  In the conventional mesh-shaped through-hole forming apparatus as described above, since the cutting process is performed by the movable lower mold 18 and the upper mold 35, the upper mold is the downstream side where the workpiece flows with respect to the lower mold (in FIG. 8, The flat plate W is pushed in the feed direction P side). For this reason, the upper mold has a problem that a guide metal 32 serving as a thrust receiver is essential on the downstream side.

  An object of the present invention is to provide a mesh-like through-hole forming apparatus that can omit the thrust receiver of one mold located on the downstream side where a workpiece flows and can improve productivity.

  In order to solve the above-mentioned problems, the invention according to claim 1 includes a first mold having a shearing blade and a second mold having a shearing blade every time feed is intermittently applied to a flat workpiece. Are linked to a pair of first-type linear motion mechanisms and second-type linear motion mechanisms that repeat forward and backward movements in a direction orthogonal to the workpiece feed direction at the same time. On the other hand, in the mesh-like through-hole forming apparatus in which the second die is subjected to a blanking press operation, and a plurality of slits are cut and formed in a zigzag manner by the cooperation of both the first die and the second die shearing blade, When the combination of the second die and the first die is a set of pressing parts, two sets of pressing parts are provided, the press parts are arranged relative to each other, and the workpiece feed direction in one pressing part In the direction opposite to the feed direction of the workpiece in the other press section and the other press The two molds of each press section are set in the direction approaching the section and the two upper presses are operated at the time of the one-side press operation with respect to a common upper slider that is operatively connected to the second mold linear motion mechanism and reciprocates. The gist of the mesh-shaped through-hole forming apparatus is characterized in that it is provided so as to penetrate into a space region formed between the first molds of the part.

  According to a second aspect of the present invention, in the first aspect, the first die of each press section is linked to a first drive source via the first die linear motion mechanism, and the first drive source is used to It is fixed to a common lower slider or a pair of independent lower sliders that move forward and backward in a direction orthogonal to the feed direction, and the upper slider is connected to a second drive source via the second type linear motion mechanism. The second drive source is linked to perform forward and backward movement in a direction orthogonal to the workpiece feeding direction.

  A third aspect of the present invention is the method according to the first or second aspect, wherein the workpiece processed by the two press portions includes a discharge path including a space region formed between the first molds of the two press portions. It is characterized by.

  According to a fourth aspect of the present invention, in the third aspect, on the downstream side of the space region in the discharge path, there is provided a branch path through which the workpiece processed by each press portion branches and passes. It is characterized by.

  According to a fifth aspect of the present invention, in the third aspect of the present invention, the downstream side of the space area in the discharge path is provided as a common path through which the workpieces processed by the respective press portions pass. And

As described in detail above, according to the first aspect of the invention, the second type thrust receiver located on the downstream side where the workpiece flows can be omitted, and the productivity can be improved.
According to the second aspect of the present invention, the first drive source for the reciprocating motion of the lower slider (ie, the reciprocating linear motion) is shared, and the second driving source for the reciprocating motion of the upper slider (ie, the reciprocating linear motion) is provided. By making it common, the drive source of each slider in both press parts can be made common, and it is not necessary to synchronize the reciprocating motion in the direction orthogonal to the feed direction between both press parts in a control manner.

  According to invention of Claim 3, since the space area | region formed between the 1st type | molds of both press parts becomes a part of the discharge path | route of the workpiece | work respectively processed by both press parts, the space of a discharge path | route is made. Can be reduced.

  According to the invention of claim 4, on the downstream side from the space region of the discharge path, the branch paths through which the workpieces processed by the respective press portions branch and pass are provided, so that each press The workpiece processed for each part can be discharged.

  According to the invention of claim 5, a mesh-like through-hole molding is provided on the downstream side from the space region of the discharge path by providing a common path through which the workpieces processed by the respective press portions pass. Workpieces processed at both press sections can be discharged from a common path provided in the apparatus.

The sectional side view of the mesh-like through-hole shaping | molding apparatus of one Embodiment. FIG. 2 is a cross-sectional view of main parts taken along line 1-1 in FIG. FIG. 6 is a schematic plan view of a second type linear motion mechanism of the upper slider. The partial perspective view which shows a lower slider, a lower mold | type, a guide pin, an upper slider, and an upper mold | type. The expanded sectional side view of the principal part. The fragmentary perspective view of the workpiece | work in which the mesh-shaped through-hole was formed. The sectional side view of the mesh-shaped through-hole shaping | molding apparatus which abbreviate | omitted one part from the structure shown in FIG. The sectional side view of the conventional mesh-like through-hole forming apparatus. The partial perspective view of the upper mold | type and lower mold | type used for a mesh-shaped through-hole shaping | molding apparatus. The partial front view which shows the shaping | molding operation | movement of a lower mold | type and an upper mold | type.

Hereinafter, an embodiment of a mesh-like through-hole forming apparatus embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, a lower mold support 12 as a first mold support is fixed to the upper surface of the bed 11. On the upper surface of the lower support 12, a horizontal direction Q (perpendicular to the plane of the drawing) perpendicular to the feed direction P1 of a metal flat plate W1 as a work and the feed direction P2 of a metal flat plate W2 as a work. A housing groove 12a is formed so as to extend in the direction. The relationship between the feed direction P1 and the feed direction P2 is a relationship that is opposite to each other.

  A pair of first guide metals 13R and 13L are provided on the bottom surface 12b of the receiving groove 12a, and second and second vertical surfaces 12c and 12d on the upstream side and the downstream side in the feed direction P1 of the flat plate material W1 are provided. Three guide metals 14 and 15 are fixed. In the first guide metal 13 shown in FIG. 1, L and R are attached to the symbols of the first guide metal located on the left side and the first guide metal located on the right side for convenience of explanation.

  A lower slider 16 as a first slider is accommodated by the guide metals 13R, 13L, 14, and 15 so as to be slidable in the horizontal direction Q. On the lower slider 16, on the left side and the right side in FIG. 1, the first movable lower mold 18L of the first press part A and the second movable part of the second press part B via shim 17L, 17R for height adjustment. The lower mold 18R is fixed. The first movable lower mold 18L and the second movable lower mold 18R are examples of the first mold.

  The 1st press part A and the 2nd press part B of the mesh-shaped through-hole shaping | molding apparatus of this embodiment are each provided in the left side part side and the right side part side of the mesh-like through-hole shaping apparatus, as shown in FIG. Thus, it is the characteristic structure that it is provided in the mutually opposite side part and is mutually arrange | positioned relatively. And in FIG. 1, in the 1st press part A, the feed direction P1 of the flat plate material W1 is a right direction, and is a direction approaching the 2nd press part side, On the other hand, in the 2nd press part B, it is a flat plate. It is also characteristic that the feed direction P2 of the material W2 is a leftward direction and is a direction approaching the first press portion side.

(First press part A and second press part)
Below, it demonstrates centering around the structure of the 1st press part A, and demonstrates the structure of the 2nd press part B as needed.

  Since the movable lower die 18L of the first press part A is configured in the same manner as the configuration shown in FIG. 9 described in “Background Art”, the same portions are denoted by the same reference numerals, and the description thereof is omitted. explain.

  As shown in FIG. 2, a column 10 provided near the outside of the bed 11 on the horizontal Q arrow side (right side in FIG. 2) is provided with a first drive source as a first drive source via a bracket (not shown). A linear servo motor 19 is attached. A connecting shaft 20 </ b> B is connected to the linear motion shaft 20 of the first linear servo motor 19, and the connecting shaft 20 </ b> B is connected to the lower slider 16. When the first linear servo motor 19 is actuated, the lower slider 16 and the movable lower mold 18L are reciprocated in the horizontal direction Q via the linear motion shaft 20, the joint 20A, and the connecting shaft 20B. .

  The linear motion shaft 20, the joint 20 </ b> A, and the connection shaft 20 </ b> B are an example of a lower mold linear motion mechanism U that causes the movable lower molds 18 </ b> L and 18 </ b> R to repeat forward and backward movements. The lower die linear motion mechanism U is not limited to this example. The lower die linear motion mechanism U is an example of a first die linear motion mechanism.

  On the other hand, the second movable lower mold 18R of the second press part B is disposed in parallel with the first movable lower mold 18L, and the configuration of the second movable lower mold 18R includes the first movable lower mold 18R. It is formed so as to be plane-symmetric with the configuration of the movable lower mold 18L. For this reason, about the structure corresponded to the structure with which the said 1st movable lower mold | type 18L is provided, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

The vertical surface 18f of the second movable lower mold 18R is in contact with the vertical surface of the vertical wall 16c formed integrally with the lower slider 16.
As shown in FIGS. 1 and 2, above the lower mold support base 12, an upper mold support base 26 as a second mold support base is vertically arranged via a lifting drive mechanism as a reciprocating mechanism (not shown). It is installed so that it can reciprocate.

An upper mold holder 27 as a second mold holder is attached to the lower surface of the upper mold support 26 by bolts (not shown).
As shown in FIG. 1, an accommodation groove 27 a is formed on the lower surface of the upper mold holder 27 so as to extend in the horizontal direction Q. The first to third guide metals 30 to 32 are not shown on the inner top surface 27b of the housing groove 27a, the upstream vertical surface 27c in the feed direction P1 of the flat plate material W1, and the downstream vertical surface 27d. It is attached with bolts. Note that, in the first guide metal 30 shown in FIG. 1, L and R are attached to the reference numerals 30 of the first guide metal located on the left side and the first guide metal located on the right side for convenience of explanation. .

  An upper slider 33 as a second slider is in contact with each guide metal 30L, 30R, 31, 32 so as to be slidable in the horizontal direction Q. The upper slider 33 corresponds to a common slider. In an accommodation groove 33a formed on the lower surface of the upper slider 33 so as to extend in the horizontal direction Q, an upper die 35R of the first press part A and an upper die 35L of the second press part B are accommodated.

  A pair of intermediate members 40 is disposed between the upper molds 35L and 35R. As shown in FIG. 1, the opposing surfaces (relative surfaces) of both intermediate members 40 are inclined surfaces whose separation distance becomes shorter as going upward. A pair of inclined surfaces of a wedge member 41 screwed to the upper slider 33 by bolts 38 are in contact with the two relative surfaces. The wedge member 41 is disposed in contact with the relative surface, and the upper end of the wedge member 41 is separated from the upper slider 33.

  The upper molds 35L and 35R are firmly fixed to the upper slider 33 via the intermediate members 40 by the wedge effect of the wedge member 41 by screwing the bolts 38 to the upper slider 33. ing.

  Further, as the screwing amount of the bolt 38 to the upper slider 33 is larger, the wedge member 41 is moved upward, so that the pressing force of the intermediate members 40 against the upper molds 35L, 35R is increased, and the upper molds 35L, In 35R, the fixing force with respect to the upper slider 33 increases. Further, by releasing the screw 38 from the upper slider 33, the pressing of the wedge member 41 is released, and the upper molds 35L and 35R can be detached from the upper slider 33.

The upper molds 35L and 35R are examples of the second mold.
Since the upper die 35L of the first press part A is configured in the same manner as the upper die 35 shown in FIG. 9 described in “Background Art”, the same reference numerals are given and description of the configuration is omitted. Further, the upper die 35R of the second press part B is similarly configured in the same manner as the upper die 35 shown in FIG. 9 described in the “Background Art”, and therefore the same reference numerals are given and description of the configuration is omitted. .

  In the first press part A, as shown in FIGS. 2, 4, and 7, the upper end of the lower slider 16 on the horizontal Q side and the upper surface of the anti-horizontal Q side end, and the upper slider 33 are provided. A pair of coil springs 37 are interposed between the lower end of the horizontal direction Q side end and the anti-horizontal direction Q side end. The upper slider 33 is pressed against the inner top surface 27 b of the receiving groove 27 a of the upper mold holder 27 through the first guide metal 30 by the upward biasing force of the coil spring 37. Therefore, avoiding sliding contact between a position regulating member (not shown) provided on the upper mold holder 27 and the lower surface of the upper slider 33 to regulate the downward movement of the upper slider 33, The sliding resistance of the upper slider 33 in the horizontal direction Q is reduced.

  As shown in FIG. 4, the lower end of the coil spring 37 is externally fitted to a protrusion 16 a that protrudes upward from the upper surface of the lower slider 16 and is restricted from moving. Further, the upper end of the coil spring 37 is externally fitted to a projection (not shown) that projects downward from the lower surface of the upper slider 33 and is restricted from moving.

  As shown in FIG. 2, a second linear servo motor 42 as a second drive source is attached to the column 10 via a bracket (not shown), and a joint 44 is attached to the linear motion shaft 43 of the second linear servo motor 42. A connecting rod 45 connected to the upper slider 33 is connected via the. When the linear motion shaft 43 of the second linear servo motor 42 is reciprocated in the horizontal direction, the upper slider 33 and the upper molds 35L and 35R are reciprocated in the horizontal direction via the joint 44 and the connecting rod 45. It is like that.

  The linear motion shaft 43, the joint 44, and the connecting rod 45 are an example that constitutes an upper mold linear motion mechanism T that causes the upper molds 35L and 35R to repeat forward and backward movements. The upper linear motion mechanism T is not limited to this example. The upper die linear motion mechanism T is an example of a second die linear motion mechanism.

  As shown in FIG. 3, the joint 44 is connected to the guide plate 44 a connected to the tip of the linear motion shaft 43 and extending in the vertical direction (the direction orthogonal to the plane of FIG. 3), and to the tip surface of the connecting rod 45. And a guide member 44b guided and moved in the vertical direction by the guide plate 44a. When the upper slider 33 is reciprocated in the vertical direction, the connecting rod 45 and the guide member 44b are guided to the guide plate 44a while the second linear servo motor 42 and the linear motion shaft 43 are held at predetermined positions. And the vertical movement of the upper slider 33 is allowed.

  As shown in FIGS. 1, 2, and 4, in the first press part A, a pair of through holes 18 g are provided at the horizontal Q-side end and the anti-horizontal Q-side end of the first movable lower mold 18 </ b> L. It is formed in the vertical direction. As shown in FIG. 5, the guide pins 46L are respectively passed upward through the through holes 18g, and a flange 46a formed integrally with the lower ends of the guide pins 46L is formed in the stepped portion 18h at the lower end of the through holes 18g. The guide pin 46L is locked so that it cannot be pulled upward.

  As shown in FIGS. 2 and 4, the upper end portions of the both guide pins 46L are respectively inserted into two guide holes 33c that are formed in the upper slider 33 so as to penetrate in the vertical direction at a portion closer to the first press portion A side. Has been inserted.

  As shown in FIGS. 1 and 7, in the second press part B, a pair of through holes 18j are formed at the horizontal Q side end and the anti-horizontal Q side end of the second movable lower mold 18R. It is formed in the vertical direction. As shown in FIGS. 1 and 7, the guide pins 46R are passed through the through holes 18j upward, and the flanges 46a formed integrally with the lower ends of the guide pins 46R are the same as the guide pins 46L described above. The guide pin 46R is prevented from being pulled upward by being locked to the stepped portion at the lower end of the through hole 18g.

  As shown in FIGS. 1, 3, and 7, the upper end portions of both guide pins 46 </ b> R are two guide holes that are formed in the upper slider 33 so as to penetrate in the vertical direction at a portion closer to the second press portion B side. 33d is inserted.

  Accordingly, the upper slider 33 and the upper molds 35L and 35R are composed of a pair of guide pins 46L fixed to the first movable lower mold 18L, a pair of guide pins 46R fixed to the second movable lower mold 18R, and a guide hole 33c. , 33d guides the movement in the vertical direction.

  As shown in FIG. 2, at both ends of the upper slider 33 on the horizontal direction Q side and the anti-horizontal direction Q side, positions of the position regulating members 47 are respectively provided on the first press portion A side and the second press portion B side. The upper part is fixed by a bolt (not shown). In FIG. 2, only the position restricting member 47 arranged on the first press portion A side is shown.

  The lower end portion of each position regulating member 47 is in contact with both end surfaces of the movable lower molds 18L and 18R on the horizontal direction Q side and the anti-horizontal direction Q side. When the movable lower dies 18L, 18R and the upper dies 35L, 35R are reciprocated in the horizontal direction Q by the position restricting members 47, no bending load is applied to the guide pins 46L, 46R. .

  As shown in FIGS. 1 and 7, in the upper mold holder 27, a plurality (only one place) is provided at a predetermined interval in the horizontal direction Q with respect to the end portions on the first press part A side and the second press part B side. A through hole 27e is formed at a location shown. Support rods 52L and 52R are penetrated through the through-hole 27e so as to be reciprocable in the vertical direction with a predetermined stroke. The support rod on the first press part A side is denoted by 52L, and the support rod on the second press part B side is denoted by reference numeral 52R.

  In the 1st press part A, the pad 53L for pressing the upper surface of the flat plate W1 is bridge | crosslinked between the lower end parts of each support rod 52L. A coil spring 54L is disposed between the upper mold holder 27 and the pad 53L to constantly bias the support rod 52L and the pad 53L to the lower limit position.

  Similarly, on the second press portion B side, a pad 53R for pressing the upper surface of the flat plate material W2 is bridge-connected between the lower ends of the support rods 52R. Between the upper mold holder 27 and the pad 53R, there is interposed a coil spring 54R for constantly biasing the support rod 52R and the pad 53R to the lower limit position.

  As shown in FIG. 2, in the upper slider 33, on the first press portion A side, there is a pad 61L for pressing the upper surface of the flat plate material W1 supported by the upper surface 18a of the first movable lower mold 18L. It is mounted so that it can reciprocate in a vertical direction with a predetermined stroke. A coil spring 63 is interposed between the upper surface of the pad 61L and the stopper 62 screwed into the screw hole 33e of the upper slider 33, and always urges the pad 61L to the lower limit position.

  Although not shown, the pad for pressing the upper surface of the flat plate material W2 supported by the upper surface 18a of the second movable lower mold 18R also has a predetermined stroke in the upper slider 33 on the second press portion B side. It is mounted so that it can reciprocate vertically. The support configuration of the pad and the configuration of the peripheral members are the same as the configuration of the pad 61L on the first press portion A side, and thus description thereof is omitted.

  As shown in FIGS. 1 and 7, the flat plate material W1 after being processed in each press portion is between the first movable lower die 18L of the first press portion A and the second movable lower die 18R of the second press portion B. , A space region K which is a part of the discharge path of W2 is provided. Further, the lower slider 16 and the lower mold support 12 positioned below the space region K are formed with through holes 50 and 60 which are part of the discharge path, respectively. Further, the portion between the opposite end P1 side (the left end in FIG. 1) and the end P1 (the right end in FIG. 1) penetrates the bed 11 so as to communicate with the through hole 60 of the lower mold support 12. A hole 70 is formed. A communication hole 80 communicating with the through hole 60 is formed in the middle of the through hole 70 as shown in FIGS. In addition, the width in the horizontal direction Q of the through holes 50, 60, 70 and the communication hole 80 is set longer than the width in the horizontal direction Q of the flat plate materials W1, W2, and the flat plate materials W1, W2 can pass therethrough. Yes.

  The through hole 70 is processed toward the counter feed direction P2 and the feed path 70L as a branch path for sending the flat plate material W1 after being processed toward the counter feed direction P1 side with the communication hole 80 as a boundary. It is comprised from the delivery path 70R as a branch path which delivers the flat plate material W2 after this. The space region K and the through hole 70 are provided with a lower slider 16, guide rollers 90 and 92 supported by the bed 11, and a carry-out roller 94.

The through holes 50 and 60 and the communication hole 80 correspond to a common path provided downstream of the space region K. The space region K, the through holes 50 and 60, the communication hole 80, and the through hole 70 are examples of discharge paths for the flat plate materials W1 and W2.
(Operation of the embodiment)
The operation of the mesh-like through-hole forming apparatus configured as described above will be described.

  FIG. 1 shows a state where the upper molds 35L and 35R are separated from the movable lower mold 18 in the upward direction. The leading edges of the flat plate materials W1 and W2 are formed between the first movable lower mold 18L and the upper mold 35L of the first press part A and the second movable lower mold 18R and the upper mold 35R of the second press part B by a supply mechanism (not shown). When a lifting drive mechanism (not shown) is operated in the state of being sent to each molding region, the upper mold support base 26, the upper mold holder 27, the upper molds 35L and 35R, the pads 53L, 53R, and 61L are moved downward. The At this time, the upper slider 33 is guided downward by a pair of left and right guide pins 46L and 46R connected to the movable lower molds 18L and 18R.

  In the first press part A, the pad 35 </ b> L is brought into contact with the first movable lower mold 18 </ b> L and before the upper mold 35 </ b> R is brought into contact with the second movable lower mold 18 </ b> R in the second press part B. The lower surfaces of 53L, 53R, 61L, etc. are brought into contact with the upper surfaces of the flat plate materials W1, W2, and the upper surfaces of the flat plate materials W1, W2 are elastically pressed by the coil springs 54R, coil springs 54L, 63, etc. (see FIG. 2). When the upper molds 35L and 35R are further moved downward and enter the space region K in the holding state of the flat plate materials W1 and W2, the ridges 18c of the first movable lower mold 18L and the second movable lower mold 18R. The protrusions 35a and the recesses 35b of the upper molds 35L and 35R are engaged with the molding groove 18d to form a plurality of slits and perform a one-piece press operation. As a result, the first corrugated portion in which a plurality of cuts are formed by the shearing blades 35d and 18e with respect to the leading edges of the flat plate materials W1 and W2 and the unevenness (see the conventional example shown in FIG. 10) continues. Is formed. Here, the shearing blade 35d corresponds to the upper blade, and the shearing blade 18e corresponds to the lower blade.

  After the first corrugated portions are formed at the tip portions of the flat plate materials W1 and W2, the upper slider 33 and the upper die 35 are raised when a lifting drive mechanism (not shown) is operated. Then, the first linear servo motor 19 and the second linear servo motor 42 are operated simultaneously, and the lower slider 16, the movable lower mold 18 and the upper slider 33, the upper mold 35L of the first press part A, and the second press part B The upper die 35R is moved in the horizontal direction Q by a half pitch of the formation pitch of the protrusions 18c, and the flat plate material W1 is fed by a predetermined amount in the feed direction P1, and the flat plate material W2 is fed by a predetermined amount in the feed direction P2.

  In this state, when a lifting drive mechanism (not shown) is operated, the upper slider 33 and the upper molds 35L and 35R are lowered again and enter the space region K, and the second flat plate members W1 and W2 are punched out. The operation (forming operation) is performed, and the second corrugated portion is formed at a portion adjacent to the counter-feeding direction side in the first corrugated portion of each of the flat plate materials W1, W2. Hereinafter, similarly, the first corrugated portion and the second corrugated portion are alternately and repeatedly molded, so that the first press portion A and the second press portion B use the flat plate material as in the conventional example shown in FIG. A lath cut metal 36 having a large number of through holes 36a is formed by cutting a plurality of slits in a staggered pattern in W1 and W2.

  Further, as shown in FIGS. 1 and 7, the flat plate material W <b> 1 processed by the one-side press operation is guided by the guide rollers 90 and 92, and by the carry-out roller 94, the space region K and the through hole 50. , 60, passing through the communication hole 80 and the delivery path 70L, and conveyed to the outside of the mesh-like through-hole forming device in the counter feed direction P1.

  On the other hand, as shown in FIGS. 1 and 7, the flat plate material W <b> 2 processed by the one-side press operation is guided by the guide rollers 90 and 92, and the space region K and the through-hole 50 by the carry-out roller 94. , 60, passing through the communication hole 80 and the delivery path 70 </ b> R, and conveyed to the outside of the mesh-like through-hole forming device in the counter feed direction P <b> 2.

  Here, when the feed rates of the flat plate material W1 and the flat plate material W2 to the first press part A and the second press part B are the same, the production amount of the mesh-like through-hole forming device is larger than that of the conventional device. It is possible to improve productivity by producing twice the same standard Lascut metal 36.

  Further, when the feed rates of the flat plate material W1 and the flat plate material W2 with respect to the first press part A and the second press part B are different, by this mesh-like through-hole forming device, different types of lath-cut metals are simultaneously produced to increase productivity. Can be improved.

  Further, in the one-side punching operation in the mesh-like through-hole forming apparatus of the present embodiment, the upper die 35L of the first press part A and the upper die 35R of the second press part B enter the space region K, When the one-piece punching operation is performed, the force applied in the feed direction P1 from the first movable lower mold 18L to the upper mold 35L and the force applied from the second movable lower mold 18R to the upper mold 35R in the counter feed direction P1 (feed direction P2) This cancels out the force applied. For this reason, the guide metals 31 and 32 provided in the upper slider 33 do not need to have a thrust function, and an inexpensive guide metal can be employed.

According to the molding apparatus of the first embodiment, the following effects can be obtained.
(1) The mesh-like through-hole forming apparatus of the present embodiment includes a first press portion A and a second press portion, and the first press portion A includes an upper die 35L (second die) and a first movable lower die 18L. The second press part B has an upper die 35R (second die) and a second movable lower die 18R (first die). Each time the upper molds 35L, 35R, the first movable lower mold 18L, and the second movable lower mold 18R are intermittently fed to the flat plate materials W1, W2 (flat plate workpiece), the flat plate material A pair of upper type linear motion mechanism T (second type linear motion mechanism) and lower type linear motion mechanism U (first) that repeats reciprocating motion simultaneously in a horizontal direction Q orthogonal to feed directions P1, P2 of W1, W2 (workpieces). Type linear motion mechanism). Further, in the mesh-shaped through-hole forming device, the upper molds 35L and 35R are subjected to a one-side press operation on the flat plate materials W1 and W2 (workpieces) after the forward movement and the backward movement, and a shearing blade 35d (upper blade) and A plurality of slits are formed in a zigzag pattern in cooperation with the shearing blade 18e (lower blade). In addition, the press portions are disposed relative to each other, and the work feed direction P1 in one first press portion A is opposite to the work feed direction P2 in the other second press portion B and the other press portion is in the other direction. It is set in the direction approaching the press part. Furthermore, in the mesh-like through-hole forming apparatus of the present embodiment, the upper die 35L, 35R of each press part is operatively connected to the upper die linear movement mechanism T and reciprocally moves with respect to the common upper slider 33. During the punching press operation, it is provided so as to enter the space region K formed between the first movable lower mold 18L and the second movable lower mold 18R of both press portions. As a result, according to the present embodiment, it is possible to omit the upper thrust receiver located on the downstream side where the workpiece flows, and to improve productivity.

  (2) In the mesh-like through-hole forming apparatus of the present embodiment, the first movable lower mold 18L and the second movable lower mold 18R of each press part are connected to the first linear servomotor 19 via the lower mold linear motion mechanism U. The first linear servo motor 19 is linked to a first lower servo source 16 that moves forward and backward in a horizontal direction Q perpendicular to the workpiece feed directions P1 and P2. . The upper slider 33 is linked to the second linear servo motor 42 (second drive source) via the upper die linear movement mechanism T, and is moved forward and backward in the horizontal direction Q by the second linear servo motor 42. I do.

  As a result, according to the present embodiment, the first linear servo motor 19 which is the first drive source for the reciprocating motion (that is, the reciprocating motion) of the lower slider is shared, and the reciprocating motion (that is, the upper slider 33) By making the second linear servo motor 42, which is the second drive source of reciprocating linear motion, common, the drive source of each slider in both press portions can be made common and orthogonal to the feed direction between both press portions. There is no need to controllably synchronize the reciprocating motion in the direction.

  (3) In the mesh-like through-hole forming apparatus of the present embodiment, the flat plate materials W1 and W2 processed by the first press part A and the second press part B are the first movable lower mold 18L of both press parts, A discharge path including a space region K formed between the second movable lower molds 18R is provided.

  As a result, according to the present embodiment, the space region K formed between the lower dies of both press portions becomes part of the discharge path of the flat plate materials W1, W2 respectively processed by both press portions. The space for the discharge path can be reduced.

  (4) In the mesh-like through-hole forming device of the present embodiment, the discharge path is downstream from the space region K, and the flat plate materials W1 and W2 processed by the respective press portions are branched and pass. By providing the delivery paths 70L and 70R, it is possible to discharge the workpiece processed for each press section.

In addition, you may change the said embodiment as follows.
-Although the upper mold | type 35 was fixed in the accommodation groove | channel 33a of the upper slider 33, you may make it form the upper mold | type 35 itself so that it may have the outer surface shape of an upper slider, and may serve as the function of an upper slider.

The lower slider 16 and the upper slider 33 may be configured to reciprocate with a single drive source, for example, to reciprocate with a linear servo motor.
In the embodiment, the first movable lower mold 18L and the second movable lower mold 18R of each press unit are linked to the first linear servomotor 19 (first drive source) via the lower mold linear motion mechanism U. The first linear servo motor 19 is fixed to a common lower slider 16 that moves forward and backward in a horizontal direction Q orthogonal to the workpiece feed directions P1 and P2.

  Instead, the first movable lower mold 18L and the second movable lower mold 18R of each press part are provided on a pair of lower sliders, respectively, and the lower sliders are respectively connected via a pair of independent lower mold linear motion mechanisms U. The first linear servomotor 19 (first drive source) may be linked to a common (single) first linear servomotor 19.

  Alternatively, the first movable lower mold 18L and the second movable lower mold 18R of each press part are respectively provided on a pair of lower sliders, and both the lower sliders are respectively connected via a pair of independent lower mold linear motion mechanisms U, respectively. You may make it link with a pair of 1st linear servomotor 19 (1st drive source). In this case, both the first linear servomotors 19 reciprocate between the first movable lower mold 18L and the second movable lower mold 18R via the respective lower sliders in a controlled manner.

  In the embodiment, the delivery paths 70L and 70R as the branch paths are provided. However, as shown in FIGS. 1 and 7, instead of conveying the flat plate material W1 processed from the delivery path 70L, guide rollers 92a and 94a are provided. May be provided in the through-hole 70, and the processed flat plate materials W1 and W2 may be carried out from one end side of the bed 11. In FIG. 1 and FIG. 2, the flat plates W1 and W2 are sent out from the delivery path 70R. In this case, the delivery path 70R is an example of a common path. Of course, the delivery path 70L may be a common path. As a result, according to this embodiment, on the downstream side from the space region K of the discharge path, there is provided a delivery path 70R (common path) through which the flat plate materials W1 and W2 processed by the respective press portions pass. By being done, the workpiece | work processed in both the press parts can be discharged | emitted from the common path provided in the mesh-shaped through-hole shaping | molding apparatus.

  The movable lower molds 18, 18 R and the upper mold 35 (second mold) so that the installation positions of the movable lower molds 18 L, 18 R and the upper mold 35 are turned upside down or the guide pins 46 L, 46 R are oriented in the horizontal direction. ) May be installed.

A ... 1st press part, B ... 2nd press part, K ... Spatial area,
P1 ... feed direction of the flat plate material W1, P2 ... feed direction of the flat plate material W2,
T: Upper mold linear motion mechanism (second type linear motion mechanism),
U ... Lower die linear motion mechanism (first die linear motion mechanism),
W1, W2 ... flat plate material, 16 ... lower slider (first slider),
18L: first movable lower mold (first type), 18R: second movable lower mold (first type),
33 ... Upper slider (common slider), 35L, 35R ... Upper mold (second mold),
50, 60, 70: through holes, 70L, 70R: delivery paths, 80: communication holes.

Claims (5)

Each time feed is intermittently applied to a flat workpiece, the first die having a shearing blade and the second die having a shearing blade are synchronously moved in a direction perpendicular to the feeding direction of the workpiece. And a pair of first-type linear motion mechanism and second-type linear motion mechanism that repeat reciprocating movements, respectively, and after the forward movement and backward movement, the second mold is subjected to a one-side punching press operation on the workpiece, In a mesh-like through-hole forming apparatus that forms a plurality of slits in a zigzag manner by the cooperation of both shearing blades of the first mold and the second mold,
When the combination of the second die and the first die is a set of press sections, two sets of press sections are provided, and the press sections are arranged relative to each other, and the workpiece is fed by one press section. The direction is set in the direction opposite to the workpiece feeding direction of the other press part and the direction approaching the other press part, and the second die of each press part is operatively connected to the second die linear motion mechanism. A reciprocating common slider is formed so as to penetrate into a space region formed between the first molds of both press portions during the one-side punching operation. apparatus. The first die of each press unit is linked to a first drive source via the first die linear motion mechanism, and is moved forward and backward by the first drive source in a direction perpendicular to the feed direction of the workpiece. Fixed to a common first slider or a pair of independent first sliders,
The common slider is linked to a second drive source via the second type linear motion mechanism, and performs forward and backward movement in a direction orthogonal to the feed direction of the workpiece by the second drive source. The mesh-like through-hole forming device according to claim 1, wherein   3. The mesh shape according to claim 1, wherein the work machined by the two press portions includes a discharge path including a space region formed between the first molds of the two press portions. Through-hole forming device.   4. The mesh shape according to claim 3, wherein a branch path through which a workpiece processed by each press section branches and passes is provided downstream from the space region in the discharge path. Through-hole forming device.   The mesh-like through-hole according to claim 3, wherein a downstream side of the space in the discharge path is provided as a common path through which the workpieces processed by the respective press portions pass together. Molding equipment.