JP2011218440A - Press equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide press equipment which can restrain the upsizing of a facility and can also change die sets quickly.SOLUTION: The invented press equipment 100 is constituted so that a forming die M can be mounted and at least the drag of the forming die M can be drawn. The press equipment comprises a first die set 130 and a second die set 140, a pressing mechanism 110, and a guide structure 120. The first die set and the second die set are aligned so that either die set adjoins the side different from the side where the drag of the other die set is drawn. The pressing mechanism vertically applies pressure to the die set placed at a pressing position PP. The guide structure guides the first die set and the second die set so as to enable the die sets to move in their alignment directions between a state that the second die set is placed at the pressing position and the first die set is placed at a first waiting position adjoining one side of the pressing position and a state that the first die set is placed at the pressing position and the second die set is placed at a second waiting position adjoining the opposite side of the pressing position.

Description

  The present invention relates to a press apparatus, and more particularly, to a structure of a press apparatus having a mold changing function.

  Generally, a die set having a laminated structure that can be set in a state in which a plurality of molds are arranged in a vertical direction is provided, and a plurality of molds are simultaneously pressed in a plurality of molds by pressing the die set in a vertical direction by a press mechanism. 2. Description of the Related Art A press apparatus having a structure capable of performing the above press work is known (see, for example, Patent Documents 1 to 3 below). Although this type of press device can perform efficient press work, it is necessary to replace a plurality of molds arranged in the vertical direction in the die set individually, so that a quick replacement operation can be performed. Therefore, it was difficult to adapt to a variety of small-lot production. For this reason, in Patent Document 3, a plurality of die sets are configured to be movable on the apparatus, so that one appropriate die set can be moved to the press position where the press mechanism is disposed, or escape from the press position. In this way, exchange is possible for each die set.

Japanese Patent Laid-Open No. 2001-30095 JP 2002-178194 A JP 2009-56485 A

  However, in the press apparatus described in Patent Document 3, as a procedure for exchanging the die set, the original die set arranged at the press position is once escaped to the retracted position, and then the new die set is moved to the press position. Since it is necessary to introduce the new die set and the new die set standby place, it is necessary to introduce the die set moving direction between the press position and the save place and standby place. For this reason, there is a problem that the apparatus becomes large.

  In the above apparatus, it is necessary to move the original die set from the press position to the retreating place through the direction change place, and then move the new die set from the standby place to the press position through the direction change place. Therefore, there is also a problem that the total distance traveled by both die sets for die set replacement becomes longer and the time required for replacement becomes longer.

  Therefore, the present invention solves the above-described problems, and an object of the present invention is to realize a press apparatus that can suppress an increase in the size of the apparatus and can quickly replace a die set.

  In view of such circumstances, the press device of the present invention is configured such that a molding die having an upper die and a lower die can be mounted, and at least the lower die of the molding die can be pulled out. A first die set and a second die set that are arranged so that the other is adjacent to a side different from the pull-out side of the lower die, and the first die set or the second die set arranged at a press position A press mechanism that applies a vertical press pressure to the die set; and a first standby in which the second die set is disposed at the press position and the first die set is adjacent to one side of the press position. A state in which the first die set is disposed at the press position and the second die set is disposed at a second standby position adjacent to the opposite side of the press position. Between, characterized by comprising a guide structure for movably guiding the first die set and the second die set to their array direction.

  According to the present invention, the first die set and the second die set are arranged so that one of them is adjacent to the other on the side different from the drawing side of the lower die, and the two die sets are By moving in the arrangement direction along the guide structure, one of the two sets of dies can be selected and placed at the press position and processed by the press mechanism. Therefore, since the movement distance when moving from the state where one die set is disposed at the press position to the state where the other die set is disposed at the press position can be shortened, the increase in size of the apparatus is suppressed. And the die set replacement time can be shortened. In addition, regardless of which die set is placed at the press position, the lower die pull-out side of the die set placed at the press position is different from the side where the other die set is adjacent. The sets can be arranged close to each other, and the workpiece can be easily supplied to and removed from the mold without being interfered with the other die set.

  In one aspect of the present invention, each of the first die set and the second die set is a stacked die set that can be mounted in a state where a plurality of molding dies are arranged vertically, and is mounted on the same die set. Each of the plurality of lower molds configured is configured to be drawable on the same side. According to this, since a plurality of molds can be collectively driven by applying a vertical pressing pressure by the press mechanism, it is possible to efficiently perform the pressing process and to occupy the area occupied by the pressing device. The increase can be suppressed. In addition, since the plurality of molds mounted on each die set are configured such that at least the lower mold can be pulled out on the same side, the workpiece can be easily supplied and taken out.

  In this case, the forming die that operates in conjunction with the drawing operation of the lower die on the drawing side of the lower die in the first die set or the second die set disposed at the press position. A workpiece transfer mechanism that supplies and removes a workpiece to, a workpiece supply mechanism that is arranged above or below the workpiece transfer mechanism and supplies a workpiece before processing to the workpiece transfer mechanism, and a workpiece transfer mechanism A workpiece discharge mechanism that is disposed below or above and receives a processed workpiece from the workpiece transfer mechanism, the workpiece transfer mechanism including a supply position of the workpiece supply mechanism, a plurality of lower mold drawing positions, and A holding portion for transferring a workpiece at each of the first reference position and the second reference position corresponding to two adjacent positions among the receiving positions of the workpiece discharge mechanism. A first drive for realizing a workpiece transfer operation by moving the arm at the first reference position and the second reference position closer to and away from the supply position, the pull-out position or the receiving position. A unit, and a second drive unit for realizing a workpiece transfer operation by moving the arm between the first reference position and the second reference position. According to this, the workpiece transfer mechanism sequentially transfers the workpiece to the workpiece supply mechanism, the plurality of lower molds, and the workpiece discharge mechanism, which are sequentially arranged in the vertical direction in conjunction with the lower die pulling operation. In such a progressive processing, workpiece supply and removal operations and workpiece transfer operations between adjacent positions are automatically performed. Therefore, it becomes possible to automatically perform a complicated processing mode including a plurality of press processing steps.

  In another aspect of the present invention, the lower die pull-out side of the first die set is set opposite to the second die set, and the lower die pull-out side of the second die set is set. Is set on the opposite side of the first die set. According to this, since both die sets are configured so that at least the lower die can be pulled out on the opposite side of the other die set, a space for supplying and taking out workpieces in the die set arranged at the press position. Can be secured widely, and in the die set disposed at the first standby position or the second standby position, a space for exchanging the mold can be secured widely. It is possible to easily arrange the accompanying mechanisms such as the above and to easily perform each operation.

  In a different aspect of the present invention, at least one of the molds has a discharge structure for dropping a separating material that is separated when a workpiece is processed, and the first die set and the second die set are A bottom plate configured to have a surface that is disposed below the mold at the press position and receives the separation material dropped by the discharge structure and has an open area opened downward on the drawer side of the lower mold And a holding frame provided on the bottom plate, configured to be movable on the drawer side along with the lower mold toward the drawer side, and having an opening for receiving the separating material received on the surface of the bottom plate. And when the lower die moves from the press position to the drawer side, the separating material is moved to the drawer side on the bottom plate while being held in the opening. Configured to be discharged in the opening region. According to this, since the separation material dropped from the mold is automatically discharged as the lower mold moves to the drawer side, it is not necessary to provide a separate discharge mechanism, and the separation material is moved from the press position to the other side. Since it is discharged to the lower die drawing side on the side different from the die set, there is no need to provide a separating material discharge place between the first die set and the second die set. Can be reduced, and as a result, an increase in the size of the apparatus can be suppressed. Here, the holding frame can be configured to form a part of a drawer mechanism (guide structure) that enables a lower mold drawer operation.

  According to the present invention, an increase in the size of the apparatus can be suppressed, and an excellent effect can be achieved in that the die set replacement time can be shortened.

The main structure side view which mainly shows the structure of the press die mechanism of the press apparatus of embodiment, and the lamination | stacking die set arrange | positioned at the press position. The main structure front view which mainly shows the structure of the press mechanism of the press apparatus, and two sets of lamination | stacking die sets each arrange | positioned at a press position and a standby position. Fig. 2 is a cross-sectional view of the press device (a cross-sectional view taken along the line II-II in Fig. 1). The partial front view centering on the press position of the press apparatus (a), and the side view (b) of a workpiece transfer mechanism. The cross-sectional view (a) and vertical cross-sectional view (b) in the reference state, and the vertical cross-sectional view (c) in the pulled-out state for showing the drawing-out operation of the mold and the discharging operation of the separating material in each laminated die set. The main structure front view which shows the 1st step of the replacement | exchange procedure of a lamination | stacking die set. The main structure front view which shows the 2nd step of the replacement | exchange procedure of a lamination | stacking die set. The main structure front view which shows the 3rd step of the replacement | exchange procedure of a lamination | stacking die set. The main structure front view which shows the 4th step of the replacement | exchange procedure of a lamination | stacking die set.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, with reference to FIG. 1 thru | or FIG. 5, the whole structure of the press apparatus 100 of this embodiment is demonstrated. The press apparatus 100 includes a press mechanism 110, a guide structure 120, a first stacked die set 130, a second stacked die set 140, a work supply mechanism 150, a work transfer mechanism 160, and a work discharge mechanism 170. 1 is a side view of the main structure in which the workpiece transfer mechanism 160 is omitted from the configuration of the press apparatus 100. FIG. 2 is a front view of the main structure in which the workpiece transfer mechanism 160 is omitted from the configuration of the press apparatus 100. 1 is a cross-sectional view taken along the line II-II in FIG. 1, FIG. 4 is a partial front view centering on the press position of the press apparatus 100, and a side view (b) of the workpiece transfer mechanism 160. 5 is a transverse sectional view (a) and a longitudinal sectional view (b) showing a reference state of a molding die mounting portion of each laminated die set, and a longitudinal sectional view (c) showing a pulled-out state.

  The press apparatus 100 has a base 101 at the bottom. Although the base 101 is shown in a simplified form in a box shape in each drawing, it actually has a frame-like frame material and a base supported by the frame material, as long as the configuration of each part is not hindered. Any structure can be used.

  The press mechanism 110 is fixedly attached to the base 101 and extends in the Z direction (upward) in the figure (a pair of standing pillars standing in the Y direction in the figure in the illustrated example), and the guide struts 111. 111 is connected to a support plate 112 fixed to the upper portion of 111, a pressure unit 113 mounted on this support plate 112, and a pressure rod 113 a of this pressure unit 113, and is movable up and down along the guide column 111. And a pressure plate 114 guided in the above. When the pressure unit 113 is operated, the pressure plate 114 is moved in the Z direction (up and down) along the guide column 111 by the pressure rod 113a.

  Upper plates 132 and 142 (to be described later) of the first laminated die set 130 and the second laminated die set 140 are arranged on the outer edge of the pressure plate 114 (edges on both sides in the Y direction (guide post 111 side) in the illustrated example). A fixing mechanism 115 for fixing in close contact with 114 is provided. The fixing mechanism 115 can fix or release the upper plates 132 and 142 with respect to the pressure plate 114 by the operation of the driving unit 115a formed of an air cylinder or the like. For example, a concave groove (not shown) is provided on the outer edge of the lower surface side of the upper plates 132 and 142, and an engagement key (not shown) that fits into the concave groove protrudes and inwards from the fixing mechanism 115 by the operation of the driving portion 115a. By being configured, when the engagement key protrudes and fits into the concave groove, the upper plates 132 and 142 are fixed to the pressure plate 114, and when the engagement key sinks, the upper plate 132 and detach from the concave groove. , 142 are released from the pressure plate 114.

  Further, lower plates 131 and 141 (to be described later) of the first stacked die set 130 and the second stacked die set 140 are in close contact with a support plate 121 (to be described later) of the base 101 at outer edges on both sides in the Y direction on the base 101. A fixing mechanism 116 is provided for fixing to the above state. The fixing mechanism 116 can fix or release the lower plates 131 and 141 with respect to the support plate 121 by the operation of a driving unit 116a formed of an air cylinder or the like. For example, a concave groove (not shown) is provided on the outer edge of the upper surface side of the lower plates 131 and 141 so that an engagement key (not shown) that fits into the concave groove protrudes and inwards from the fixing mechanism 116 by the operation of the driving part 116a. By being configured, when the engagement key protrudes and fits into the concave groove, the lower plates 131 and 141 are fixed to the support board 121, and when the engagement key sinks, the lower plate 131 is detached from the concave groove. 141 are released from the support board 121.

  The guide structure 120 guides the first stacked die set 130 and the second stacked die set 140 so as to be movable in the arrangement direction of both die sets along the upper surface of the base 101, that is, in the X direction shown in the drawing. As shown in FIG. 3, the guide structure 120 includes a base 101 provided at a pressing position PP in the center of the base 101 in the X direction (an arrangement position of a die set to which a pressing pressure can be applied by the pressing mechanism 110) PP. And a guide rail 122, 123 extending from the support plate 121 toward the first standby position 1SP and the second standby position 2SP provided on both sides in the X direction of the press position PP. (See FIG. 3). Although various configurations other than the illustrated example can be adopted as the guide structure 120, at least when the press mechanism 110 receives a press pressure, the first stacked die set 130 and the second stacked die set 140 are arranged. It corresponds to a support surface constituted by a portion corresponding to the support plate 121 that supports with high precision, and guide rails 122 and 123 that guide the first laminated die set 130 and the second laminated die set 140 to be movable in the X direction. And a guide structure composed of parts.

  In the present embodiment, the guide structure 120 includes a rack 124 provided on the side of the second laminated die set 140, a drive gear 125 that meshes with the rack 124, and an electric motor that rotationally drives the drive gear 125. A die set drive unit including a drive source 126 such as a motor is provided. The die set driving unit can move the second stacked die set 140 linearly in the X direction, but the first stacked die set 130 is connected to the second stacked die set 140 via the connecting portion 127 in the X direction. Therefore, the first stacked die set 130 can also be moved linearly in the X direction. In contrast to the above configuration, the first stacked die set 130 may be configured to be directly driven by the die set driving unit, and the first stacked die set 130 and the second stacked die set 140 may be configured separately. You may comprise so that it may move to a X direction with a drive unit.

  In the first stacked die set 130, a plurality of guide shafts 133 are attached between the lower plate 131 and the upper plate 132 so as to extend in the Z direction (up and down direction). Here, the lower portion of the guide shaft 133 is fixed to the lower plate 131 and the upper portion of the guide shaft 133 penetrates the upper plate 132 so as to be slidable. In the illustrated example, one guide shaft 133 is provided at each of the four corners of the lower plate 131 and the upper plate 132 to form a total of four guide shafts 133. Between the lower plate 131 and the upper plate 132, one or a plurality (three in the illustrated example) of intermediate plates 134 guided by the guide shaft 133 are provided. Each of these intermediate plates 134 is guided so as to be movable up and down along the guide shaft 133. In the case of the illustrated example, guide shafts 133 are slidably passed through the four corners of the intermediate plate 134, respectively.

  A space regulating shaft 135 is inserted in the Z direction (vertical direction) on the outer side of the lower plate 131, the intermediate plate 134 and the upper plate 132, and a plurality of stoppers 136 are provided above and below the space regulating shaft 135. Thus, the maximum value of the interval between the plates can be regulated. In the illustrated example, stoppers 136 are respectively provided in the Z direction (up and down) of the plurality of interval regulating shafts 135, and the interval between adjacent plates in the Z direction (up and down direction) is regulated by each of the interval regulating shafts 135 and the stopper 136. . The stopper 136 is provided so that the position of the stopper 136 can be adjusted in the Z direction (vertical direction) with respect to the interval regulating shaft 135. For example, the interval regulating shaft 135 is a screw shaft, and the stopper 136 is formed of a nut that is screwed to the stopper shaft 136.

  On the other hand, the second stacked die set 140 has the same structure as the first stacked die set 130, and a plurality of guide shafts 143 are attached to the lower plate 141, the upper plate 142, and the intermediate plate 144. The lower plates 131 and 141 and the intermediate plates 134 and 144 of the die sets 130 and 140 constitute the bottom plate of the present invention. These bottom plates are respectively arranged below the mold M, and support the mold M and a holding frame 137 described later in the illustrated example. As shown in FIG. 4, the molding die M has a lower die Md attached on the lower bottom plate and an upper die Mu attached below the upper bottom plate. The lower die Md and the upper die Mu are connected to each other. The workpiece is configured to be pressed by pressing in the vertical direction. Although not shown, as the mold M, the lower mold Md and the upper mold Mu are guided in the vertical direction by the guide rod, and the spring (which biases the lower mold Md and the upper mold Mu apart in the vertical direction) For example, it is preferable to include a coil spring through which a guide rod is inserted.

  Since the first laminated die set 130 and the second laminated die set 140 basically have the same structure, the mounting portion of the forming die M of the first laminated die set 130 will be described below with reference to FIG. The description of the second stacked die set 140 is omitted. As shown in FIG. 5, holding frames 137 to which the lower mold Md of the molding die M is fixed are provided on both sides in the Y direction of the mounting portion of the molding die M of the bottom plate made of the lower plate 131 or the intermediate plate 132. ing. The holding frame 137 is configured to be able to be pulled out to one side (left side in the figure) in the X direction together with the lower mold Md with respect to the bottom plate (the intermediate plate 134 in the illustrated example). The drawer side of the bottom plate (intermediate plate 134) is an open opening area A where no obstacle exists below.

  The holding frame 137 includes side frame portions 137s disposed on the left and right sides of the lower mold Md, and support plate portions 137p disposed on the bottom plate between the side frame portions 137s. Racks 137sa are provided on both sides of the outer surface of the side frame portion 137s, and these racks 137sa mesh with the drive gear 138 on the drawer side of the bottom plate (intermediate plate 134). Further, the lower mold Md is fixed on the support plate portion 137p.

  A spline shaft 139 extending in the Z direction (up and down) passes through the drive gear 138 so as to be slidable in the axial direction while being engaged in the rotational direction. The spline shaft 139 is connected to the connecting portion 139b via the transmission shaft 139a shown in FIG. The connecting portion 139b is configured to be connectable to the drawer driving unit 102 fixed to the frame. When the first laminated die set 130 is disposed at the press position PP, the connecting portion 139b is connected to the drawer driving unit 102, and the press position When the second stacked die set 140 is disposed in the PP, the connecting portion 149b connected to the spline shaft 149 of the second stacked die set 140 is connected. The drawer drive unit 102 includes a drive source such as an electric motor and a pair of output units 102a and 102b (see FIG. 2) provided on both sides in the X direction for outputting the rotation output of the drive source. The connecting portions 139b and 149b are configured to be detachable from the pair of output portions 102a and 102b, respectively. The drawer drive unit 102 draws the lower mold Md of the mold M from the press position PP or returns it to the press position PP by the above-described drive structure via the spline shaft 139 or 149.

  As shown in FIG. 3, the workpiece supply mechanism 150 is provided corresponding to each of the first standby position 1SP and the second standby position 2SP provided on both sides in the X direction of the press position PP. In the present specification and drawings, the workpiece supply mechanism provided at the first standby position 1SP is also indicated as 150A, and the workpiece supply mechanism provided at the second standby position 2SP is also indicated as 150B. (For example, the structure is symmetrical with respect to the vertical bisector connecting the two standby positions).

  The workpiece supply mechanism 150 supplies the workpiece W from the outside of the base 101 to the drawing side of the press position PP below the support plate 121 of the base 101. The workpiece supply mechanism 150 has a workpiece take-out portion 151, and a workpiece transfer in which workpieces W are arranged in the workpiece take-out portion 151 one by one through an opening 151 a from a workpiece storage portion 152 provided at the upper portion of the workpiece take-out portion 151. To the unit 153. The workpiece conveying portion 153 moves along the guide rail 154 from the inside of the workpiece take-out portion 151 and is supplied as shown in the drawing set to the drawing position of the press position PP (the first standby position 1SP or the second standby position 2SP in the illustrated example). Move to the position. Each time the workpiece transport unit 153 reciprocates between a position in the workpiece take-out unit 151 and a supply position on the drawing side of the press position PP, workpieces W are supplied one by one.

  As shown in FIGS. 1 and 2, the workpiece discharge mechanism 170 includes a support member 171 configured to be movable in the Y direction with respect to the upper portion of the frame, and a workpiece receiver attached so as to be tiltable with respect to the support member 171. Part 172. The support member 171 and the work receiving portion 172 are provided so as to be movable in the Y direction above the first standby position 1SP and the second standby position 2SP adjacent to both sides in the X direction of the press position PP. A discharge member 173 for leading the workpiece W to the outside is disposed above the position adjacent to the press position PP in the Y direction.

  The work receiving portion 172 reciprocates in the Y direction in conjunction with the press operation of the press mechanism 110 and the operation of pulling out the lower mold Md of the mold M and the transfer operation of the work transfer mechanism 160 in conjunction therewith. At the same time, the posture is changed according to the position in the Y direction accompanying the reciprocal movement. Such an operation is realized by a drive mechanism for the support member 171 (not shown), a posture regulation guide for the workpiece receiving portion 172, or the like. Specifically, the workpiece receiving unit 172 includes a receiving position (a position at which the workpiece W is received) adjacent to the press position PP in the X direction, and a discharge position spaced from the receiving position in the Y direction (the right side in FIG. 1). (Position shown in FIG. 1). Here, the discharge member 173 is installed at a position where the work W can be received from the work receiving portion 172 disposed at the discharge position. Further, the workpiece receiving portion 172 is configured to be able to temporarily hold the workpiece W received from the workpiece transfer mechanism 160 described later by being in a substantially horizontal posture as shown on the left side of FIG. 4 at the receiving position. Then, at the discharge position, as shown in FIG. 2, the held work W can be discharged into the discharge member 173 by being inclined toward the discharge member 173. The workpiece W discharged into the discharge member 173 is led out along the inclination of the inner surface of the discharge member 173.

  As shown in FIG. 3, the workpiece transfer mechanism 160 is disposed on the drawing side of the press position PP. As shown in a block shape by a one-dot chain line or a two-dot chain line in the figure, the workpiece transfer mechanism 160 has a first laminated die set 130 or a second laminated die set 140 arranged at the press position PP on the drawing side of the press position PP. And a standby position (two-dot chain line in the figure) moved from the operation position to the back side (Y direction) from the operation position. Here, although a drive mechanism for moving the workpiece transfer mechanism 160 between the operation position and the standby position is not shown, a guide structure fixed to a frame (not shown) as the drive mechanism, and the guide And a drive source for movement along the structure. In the present specification and drawings, the workpiece transfer mechanism provided on the drawer side of the first stacked die set 130 is also denoted as 160A, and the workpiece transfer mechanism provided on the drawer side of the second stacked die set is also denoted as 160B. However, both have basically the same structure (for example, a symmetric structure with respect to a vertical bisector connecting the first standby position 1SP and the second standby position 2SP). This is expressed as 160.

  As shown in FIG. 4, the workpiece transfer mechanism 160 includes a support column 161 configured to be movable in the Y direction, an air cylinder fixed to the support column 161, and the like. The first drive unit 162 configured to be variable and an air cylinder or the like fixed to the drive rod 162a of the first drive unit 162 via a connecting member 163, and the amount of protrusion of the drive rod 164a in the Z direction is changed. And a second drive unit 164 configured to be possible. The connecting member 163 is guided in the Z direction along a guide structure (linear guide) provided on the support column 161.

  The connecting member 163 fixed to the driving rod 162 a of the first driving unit 162 is connected to the first operating member 165. Further, the drive rod 164 a of the second drive unit 164 is connected to the second operating member 166. The first actuating member 165 supports the first guide shaft 167 extending in the Z direction so as not to move downward but to be movable upward. The second actuating member 166 supports the second guide shaft 168 extending in the Z direction so as not to move to one side (downward) in the Z direction but to be movable on the other side (upward).

  A plurality of first stoppers 167a are attached to the first guide shaft 167 at intervals in the Z direction, and a plurality of second stoppers 168a are attached to the second guide shaft 168 at intervals in the Z direction. The first guide shaft 167 and the second guide shaft 168 pass through a plurality of moving members 169, and each moving member 169 is supported by the first stopper 167a or the second stopper 168a to set the height in the Z direction. . An arm 169a that protrudes toward the press position PP is attached to the moving member 169, and a holding portion 169b that holds the workpiece W is provided at the tip of the arm 169a. The holding unit 169b is configured by, for example, a suction pad. The first stopper 167a and the second stopper 168a are attached to the first guide shaft 167 and the second guide shaft 168 so that their positions can be adjusted in the Z direction (vertical direction). For example, the first guide shaft 167 and the second guide shaft 168 are screw shafts, and the first stopper 167a and the second stopper 168a are configured by nuts that are screwed into these.

  As shown in FIG. 4, initially, the drive rod 162 of the first drive unit 162 is in the protruding state, so that the connecting member 163 is set to the upper position, whereby the first actuating member 165 is also arranged at the upper position. As a result, the first stopper 167a of the first guide shaft 167 is also disposed above. Accordingly, the plurality of moving members 169 are supported by the first stopper 167a. At this time, the second actuating member 166 is disposed at the lower position by the second drive unit 164, and as a result, the second guide shaft 168 is also disposed below. As a result, the second stopper 168a is spaced apart from the plurality of moving members 169. In this state, the plurality of arms 169a and the holding portion 169b are arranged at the respective first reference positions set downward in the Z direction. At these first reference positions, the lowermost arm 169a and the holding portion 169b are disposed to be opposed to each other above the work conveying portion 153 with a space therebetween, and the upper arm 169a and the holding portion 169b are mounted on the lowermost stage. The upper mold 169a and the holding portion 169b are arranged opposite to each other with a space above the lower mold Md with respect to the lower mold Md. Is done. The uppermost arm 169a and the holding portion 169b are disposed between the pulling position of the uppermost lower mold Md and the receiving position of the work receiving portion 172.

  When the arm 169a and the holding portion 169b are at the first reference position shown in FIG. 4, when the first drive unit 162 is operated to lower the drive rod 162a, the first stopper 167a is also lowered together with the first operating member 165. The plurality of moving members 169 are also lowered, and as a result, the holding unit 169b is lowered to hold (take out) the workpiece W on the workpiece transfer unit 153 or the lower mold Md. At this time, the moving member 169 is not moved downward by the first stopper 167a but is supported so as to be movable upward. Therefore, the height of the workpiece W to be held by the holding portion 169b is set to the workpiece conveying portion 153 or the plurality of pieces. Even if the lower molds Md are different, the movement stroke L1 of the drive rod 162a of the first drive unit 162 can be applied to the workpiece transfer unit 153 having the largest interval with respect to the first reference position or a plurality of lower molds Md. If it is set to be larger than the maximum value of the interval, the work W is held without any trouble. For example, in another workpiece transport unit 153 or a plurality of lower molds Md having an interval smaller than the maximum value of the interval, the lowering operation of the moving member 169 stops when it contacts the workpiece W, and only the first stopper 167a is further increased. Descend.

  After the plurality of holding portions 169b hold the workpiece W as described above, the drive rod 162a of the first drive unit 162 rises again and returns to the first reference position shown in FIG. Next, when the drive rod 164a of each second drive unit 164 is raised and the second actuating member 166 is moved upward, the second stopper 168a is also raised together with the second guide shaft 168, so that a plurality of second stoppers 168a are eventually added. The moving members 169 are in contact with each other from below, and the plurality of moving members 169 are raised. The movement stroke L2 of the drive rod 164a at this time is further above the pull-out position of the lower mold Md existing above the initial arm 169a and the holding part 169b arranged at the first reference position and the receiving position of the work receiving part 172. The arm 169a and the holding portion 169b are set so as to reach the second reference position set to.

  The plurality of arms 169a and holding portions 169b respectively moved to the respective second reference positions are arranged to face each other above the lower mold Md at the pulling position and the work receiving portion 172 at the receiving position. Then, when the drive rod 162a of the first drive unit 162 is lowered at these second reference positions, the plurality of arms 169a and the holding portion 169b move toward the lower mold Md and the work receiving portion 172 located therebelow. Then, the workpiece W already held is transferred to the lower mold Md and the workpiece receiving portion 172, and then the drive rod 162a is lifted again to be separated upward from the lower die Md and the workpiece receiving portion 172 to the second reference position. Return. Note that the relationship between the stroke L1 (at the second reference position) and the distance between the lower lower mold Md and the workpiece receiving portion 172 at this time is the same as that at the first reference position. Further, when the drive rod 174a of the second drive unit 174 is lowered, the second stopper 168a is lowered together with the second guide shaft 168, so that the plurality of arms 169a and the holding portion 169b can return to the first reference position again. .

  The above-described transfer operation of the workpiece transfer mechanism 160 includes the reciprocating operation of pulling out and pulling in the plurality of lower molds Md of the die sets 130 and 140, and the Y direction of the workpiece transporting unit 153 and the workpiece receiving unit 172 in conjunction therewith. It is performed in correspondence with the reciprocating motion. Specifically, when the plurality of arms 169a and the holding unit 169b are at the first reference position, the workpiece transfer unit 153 moves to the supply position and the lower mold Md is pulled out from the press position PP to the drawing position. Here, the arm 169a and the holding unit 169b are temporarily lowered to take out the workpiece W from the workpiece transfer unit 153 and the lower mold Md, and return to the first reference position in FIG. 4 again.

  Next, when the lower mold Md is pulled into the press position PP and the workpiece receiving portion 172 is in the receiving position, the lower mold Md moves from the receiving position to the discharge position. In this state, the arm 169a and the holding portion 169b are raised to the second reference position. Thereafter, the lower mold Md is pulled out again to the pulling position, the work receiving part 172 moves to the receiving position, the arm 169a and the holding part 169b are once lowered, and the work W is moved to the next stage (upper stage). To the lower mold Md or the work receiving unit 172. Further, when the lower mold Md is retracted from the drawing position to the press position PP and the work receiving portion 172 is moved from the receiving position to the discharging position, the arm 169a and the holding portion 169b are lowered and returned to the first reference position. Thereafter, as long as the supply of the workpiece W by the reciprocating operation of the workpiece conveyance unit 153 continues, the above procedure is repeated, and the workpiece W is transferred by the workpiece transfer mechanism 160 at each stage, and the press work is sequentially performed. At the same time, the workpiece W is discharged to the outside through the workpiece receiving portion 172 and the discharge member 173.

  Next, referring to FIG. 5, when the pressing process performed in the mold M is provided with a processing mode that generates a separating material SM separated from the workpiece W, for example, the workpiece W is separated by punching. A separation material discharge structure for discharging the separation material SM from the die sets 130 and 140 when the material SM is generated will be described.

  As shown in FIGS. 5A and 5B, an opening 137pa penetrating the front and back of the support plate portion 137p is formed at the center of the support plate portion 137p of the holding frame 137. The opening 137pa is configured in a position range in which the separating material SM falls from an internal structure (discharge structure), not shown, of the molding die M (lower die Md) during pressing. Therefore, when the press working is completed, the separating material SM is disposed on the bottom board in the opening 137pa. Thereafter, when the lower mold Md is pulled out together with the holding frame 137 to the drawing side (the left side in the figure), the separating material SM moves on the bottom plate together with the holding frame 137 while being held in the opening portion 137pa, and the opening portion 137pa eventually becomes the bottom plate. When reaching the opening area A provided on the drawer side, the separating material SM falls through the opening area A from the opening portion 173pa. A bowl-shaped discharge member 134d is installed in the opening area A adjacent to the edge of the bottom plate with the receiving port facing upward, and the separating material SM falls into the discharge member 134d from the receiving port and is die set. 130 and 140 are derived outside.

  Next, the exchange operation of the laminated die set will be described with reference to FIGS. In the press apparatus 100 configured as described above, the replacement operation of the first stacked die set 130 and the second stacked die set 140 is automatically performed as follows. This exchange operation is an operation for exchanging one die set at the press position PP mounted on the press mechanism 110 with the other die set. Here, the operation of changing the first stacked die set 130 to the second stacked die set 140, that is, as shown in FIGS. 1 to 4, the first stacked die set 130 is disposed at the press position PP, and the second stacked die set 130 From the state in which the set 140 is disposed at the second standby position 2SP, as shown in FIG. 9, the second stacked die set 140 is disposed at the press position PP, and the first stacked die set 130 is disposed at the first standby position 1SP. A case where the state is changed to the performed state will be described. Of course, contrary to the above, the operation of changing the second stacked die set 140 to the first stacked die set 130 can also be performed by moving each die set in the direction opposite to that described below. In this embodiment, the case where the replacement operation is automatically performed will be described. However, the replacement operation described below may be manually performed individually.

  First, as shown in FIGS. 1 to 4, it is assumed that the first laminated die set 130 is disposed at the press position PP and is attached to the press mechanism 110. In this state, the second stacked die set 140 is disposed at the second standby position 2SP adjacent to one side in the X direction of the press position PP. From this state, the press mechanism 110 is operated to lower the pressure plate 114, and as shown in FIG. 6, the lower mold Md and the upper mold Mu of the mold M of each stage of the first laminated die set 130 are closed. Alternatively, the upper plate 132 and the intermediate plate 134 are moved downward until the height of the first stacked die set 130 is maintained autonomously.

  Next, in the state shown in FIG. 6, the fixing mechanism 115 is operated to release the pressure plate 114 from the upper plate 132, and the pressure plate 114 is raised to raise the pressure plate 114 as shown in FIG. Separate from the die set 130. Thereafter, as will be described later, the first stacked die set 130 and the second stacked die set 140 are moved in the X direction. Before this movement, the workpiece transfer mechanism 160A is shown in a single point as shown by an arrow in FIG. The first standby position 1SP indicated by the chain line is retracted from the opposing operating position on the side of the Y direction (back side) and placed at the standby position indicated by the two-dot chain line in the drawing. Further, the workpiece receiving portion 172 of the workpiece discharging mechanism 170 is also retracted from the receiving position to the discharging position shown in FIG. Further, the lower mechanism 131 is released from the support plate 121 by operating the fixing mechanism 116. If necessary, the connection between the output unit 102a of the drawer driving unit 102 and the connecting unit 139b is released.

  Thereafter, the second laminated die set 140 is moved in the X direction toward the press position PP by the die set driving unit including the rack 124, the driving gear 125, and the driving source 126 shown in FIGS. The first stacked die set 130 is also moved to the same side. Finally, as shown in FIG. 8, the second stacked die set 140 is disposed at the press position PP, and the first stacked die set 130 is disposed at the first standby position 1SP adjacent to the opposite side of the press position PP. To be.

  Thereafter, the fixing mechanism 116 is operated to fix the lower plate 141 to the support board 121. Further, as shown in FIG. 9, the pressure plate 114 is lowered and brought into contact with the upper plate 142 of the second stacked die set 140, and the fixing mechanism 115 is operated to fix the pressure plate 114 to the upper plate 142. After the movement of the first stacked die set 130 and the second stacked die set 140 in the X direction is completed, the workpiece transfer mechanism 160B is moved from the retracted position to the second stacked die set as indicated by an arrow in FIG. 140 is moved to the drawer side (second standby position 2SP side). If necessary, the output unit 102b of the drawer driving unit 102 is coupled to the coupling unit 149b.

  1 to FIG. 4, when the forming die M of the second stacked die set 140 arranged at the second standby position 2SP is replaced, or at the first standby position 1SP in the state shown in FIG. When exchanging the forming die M of the first laminated die set 130, first, the upper die Mu is removed from the upper intermediate plates 144, 134 or the upper plates 141, 131 by releasing the fixing mechanism (not shown), and then 4 using the jack mechanism 180 (the jack mechanism 180A provided at the first standby position 1SP and the jack mechanism 180B provided at the second standby position 2SP), the second stacked die set 140 or the first stacked die. This is performed with the upper plates 142 and 132 of the set 130 being pulled up. At this time, if the holding frame 137 is pulled out and the forming die M is pulled out to the drawing side, the forming die M is detached from the holding frame 137 and attached to the holding frame 137, thereby further facilitating the work.

  According to this embodiment described above, the following effects can be obtained. First, the first stacked die set 130 and the second stacked die set 140 are arranged so that the other is adjacent to a side different from the drawing side of the lower mold Md, and the two sets of die sets 130 and 140 are guided. By moving in the arrangement direction (X direction) along 120, one of the two sets of die sets 130 and 140 can be selected and placed at the press position PP, and processing can be performed by the press mechanism 110. Therefore, the moving distance when moving from the state in which one die set is disposed at the press position PP to the state in which the other die set is disposed at the press position PP can be shortened. And the replacement time of the die sets 130 and 140 can be shortened. In addition, in any state where the die sets 130 and 140 are arranged at the press position PP, the drawing side of the lower mold Md of the die set arranged at the press position PP is different from the side adjacent to the other die set. From the above, the two die sets 130 and 140 can be arranged close to each other, and the workpiece W can be supplied and taken out from the mold M without interfering with the other die set. And the removal becomes easy.

  In addition, the first stacked die set 130 and the second stacked die set 140 of the present embodiment are stacked die sets that can be mounted in a state in which a plurality of forming dies M are arranged in the vertical direction. Since a plurality of molds M can be collectively driven by applying the pressing pressure, it is possible to efficiently perform the pressing process and to suppress an increase in the occupied area of the pressing apparatus 100. In addition, since the plurality of lower molds Md mounted on the same die set are configured to be able to be pulled out to the same side, the workpiece can be easily supplied and taken out.

  In the present embodiment, the mold that operates on the pull-out side of the lower mold Md in the first stacked die set 130 or the second stacked die set 140 disposed at the press position PP, respectively, in conjunction with the pull-out operation of the lower mold Md. A workpiece transfer mechanism 160 that supplies and removes the workpiece W to and from M, a workpiece supply mechanism 150 that is disposed above or below the workpiece transfer mechanism 160 and supplies the workpiece W before processing to the workpiece transfer mechanism 160, and a workpiece The workpiece transfer mechanism 160 is disposed below or above the transfer mechanism 160 and receives the processed workpiece W from the workpiece transfer mechanism 160. The workpiece transfer mechanism 160 includes a supply position of the workpiece supply mechanism 150, a plurality of positions. A first reference position and a second reference corresponding to two adjacent positions among the drawing position of the mold M and the receiving position of the workpiece discharge mechanism 170. The arm 169a provided with a holding portion 169b for delivering the workpiece W in the position and the arm 169a at the first reference position and the second reference position are moved closer to and away from the supply position, the pull-out position or the receiving position. The first drive unit 162 for realizing the delivery operation and the second drive unit 164 for realizing the transfer operation of the workpiece W by moving the arm 169a between the first reference position and the second reference position. . Accordingly, the workpiece W is sequentially sent by the workpiece transfer mechanism 160 to the workpiece supply mechanism 150, the plurality of lower molds Md and the workpiece discharge mechanism 170 arranged in the vertical direction in conjunction with the drawing operation of the lower mold Md. Thus, the operation of supplying and taking out the workpiece W and the operation of transferring the workpiece W between adjacent positions are automatically performed in such progressive processing. Therefore, it becomes possible to automatically perform a complicated processing mode including a plurality of press processing steps.

  In addition, the lower die Md drawing side in the first laminated die set 130 is set on the opposite side to the second laminated die set 140, and the lower die Md drawing side in the second laminated die set 140 is the first laminated die set 130. Is set on the opposite side. That is, in both die sets, the lower mold Md can be pulled out on the opposite side of the other die set, so that a space for supplying and taking out the workpiece W is provided in the die set arranged at the press position PP. A wide space can be secured for exchanging the mold M in the die set disposed at the first standby position 1SP or the second standby position 2SP. Accordingly, it is possible to easily arrange an accompanying mechanism such as a workpiece transfer mechanism and to easily perform each operation.

  Further, at least one of the molds M has a discharge structure for dropping the separating material SM separated when the workpiece W is processed, and the first stacked die set 130 and the second stacked die set 140 are arranged at the press position PP. The bottom plate (the lower plates 132, 142 or the intermediate plates 134, 144) is provided with a surface that is disposed below the mold M and receives the separating material SM and has an open area A that opens downward on the drawer side. And a holding frame 137 that is arranged on the bottom plate, is configured to be movable on the bottom plate together with the lower mold Md, and has an opening 137pa for receiving the separating material SM dropped by the discharge structure. When the lower mold Md moves from the press position PP to the drawing side, the separating material SM is held on the bottom plate while being held in the opening 137pa. Configured to be discharged to the opening area A adjacent to move to the bottom plate. Accordingly, since the separating material SM that has fallen from the mold is automatically discharged as the forming mold M moves to the drawing side, it is not necessary to provide a separate discharge mechanism, and the separating material SM is removed from the press position PP. Since it is discharged to the drawing side of the lower mold Md, which is a different side from the other die set, it is not necessary to provide a separation material SM discharge place between the first stacked die set 130 and the second stacked die set 140. Therefore, the distance between the two die sets can be reduced, and as a result, the increase in size of the apparatus can be suppressed.

  In addition, the press apparatus of this invention is not limited only to the above-mentioned illustration example, Of course, it can add various changes within the range which does not deviate from the summary of this invention. For example, in the above-described embodiment, the drawing side of each lower mold Md of the first stacked die set 130 and the second stacked die set 140 is opposite to each other (outer side). The drawing side of the die sets 130 and 140 may be any side in the Y direction in the drawing, for example, as long as the other side is different from the side adjacent to the other.

DESCRIPTION OF SYMBOLS 100 ... Press apparatus, 101 ... Base, 102 ... Drawer drive part, 102a, 102b ... Output part, 110 ... Press mechanism, 120 ... Guide structure, 130 ... 1st lamination die set, 140 ... 2nd lamination die set, 150 DESCRIPTION OF SYMBOLS Work supply mechanism 153 Work transfer part 160 Work transfer mechanism 162 First drive unit 164 Second drive unit 167 First guide shaft 168 Second guide shaft 169a Arm 169b ... Holding unit, 170 ... Work discharging mechanism, 180 ... Jacking mechanism

Claims (5)

A mold having an upper mold and a lower mold is configured to be mountable, and at least the lower mold of the mold is configured to be drawable, with one side adjacent to a side different from the drawer side of the lower mold A first die set and a second die set that are arranged with respect to each other,
A press mechanism for applying a vertical press pressure to the first die set or the second die set disposed at a press position;
A state in which the second die set is disposed at the press position and the first die set is disposed at a first standby position adjacent to one side of the press position; and the first die set is The first die set and the second die set are disposed between the second die set and the second standby position adjacent to the opposite side of the press position. A guide structure for guiding the die set so as to be movable in the arrangement direction thereof;
The press apparatus characterized by comprising.   Each of the first die set and the second die set is a stacked die set that can be mounted in a state in which a plurality of molds are vertically arranged, and at least of the plurality of molds mounted on the same die set. The press apparatus according to claim 1, wherein all of the lower molds are configured to be drawable on the same side. Supply of workpieces to the mold, each operating in conjunction with the lower die pulling operation, on the lower die pulling side of the first die set or the second die set disposed at the press position. And a workpiece transfer mechanism for taking out, a workpiece supply mechanism that is disposed above or below the workpiece transfer mechanism and supplies a workpiece before processing to the workpiece transfer mechanism, and below or above the workpiece transfer mechanism. A workpiece discharge mechanism that receives the processed workpiece from the workpiece transfer mechanism,
The workpiece transfer mechanism includes a first reference position and a second reference position corresponding to two adjacent positions among a supply position of the workpiece supply mechanism, a plurality of lower mold drawing positions, and a receiving position of the workpiece discharge mechanism. The arm provided with a holding part for delivering the workpiece and the arm at the first reference position and the second reference position are moved closer to and away from the supply position, the withdrawal position or the receiving position. A first drive unit for realizing a delivery operation; and a second drive unit for realizing a workpiece transfer operation by moving the arm between the first reference position and the second reference position. The press apparatus according to claim 2, comprising:   The lower die drawing side of the first die set is set on the opposite side of the second die set, and the lower die drawing side of the second die set is the first die set. The press device according to any one of claims 1 to 3, wherein the press device is set on the opposite side. At least one of the molds has a discharge structure for dropping a separating material that is separated when the workpiece is processed,
The first die set and the second die set are provided below the molding die at the press position and have a surface for receiving the separation material dropped by the discharge structure, and are provided below the drawer side of the lower die. A bottom plate configured to have an open area open to the bottom plate, and disposed on the bottom plate, configured to be movable on the bottom plate together with the lower mold toward the drawer side, and received by the surface of the bottom plate. And a holding frame having an opening for accommodating the separating material,
When the lower die moves from the press position to the drawer side, the separating member is moved to the drawer side while being held in the opening, and is discharged in the opening area. The press apparatus as described in any one of Claims 1 thru | or 4 characterized by the above-mentioned.

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