JP4715593B2 - Lift mechanism and mold equipped with the same - Google Patents

Description

  The present invention relates to a lift mechanism and a mold on which the lift mechanism is mounted.

Conventionally, the mold includes an upper mold including a die formed with a tooth profile that contacts the outside of the workpiece, and a lower mold including a die formed with a tooth profile that contacts the inside of the workpiece. It is known that a tooth profile is formed on the outer periphery of a workpiece by moving in the direction of the lower mold together with the mold and sandwiching between the upper mold and the lower mold (for example, see Patent Document 1).
Japanese Patent Laying-Open No. 2003-170236 (FIG. 4)

  By the way, in a mold for moving a workpiece up and down, a workpiece pressing base that fixes the workpiece is moved up and down accurately, and a guide pin that guides the workpiece pressing base in the dispensing direction when the workpiece is dispensed may be used. . In such a mold, for example, when the guide pin protrudes from the lower surface of the base member or the like located at the lower part of the mold when the mold is exchanged in the press apparatus, it is difficult to place it on the press apparatus because it is caught. Therefore, it is necessary to give the base member of the mold a thickness that accommodates the guide pin having a length equivalent to the stroke amount of the workpiece required when paying out from the mold. In addition, when trying to make the mold compact by thinning the base member that does not contribute to the machining of the workpiece, the guide pin sometimes protrudes outside the mold. That is, it is relatively long with respect to the length along the payout direction of the base member under the restriction of the space between the slider that is the upper die connecting portion and the bolster that is the lower die connecting portion in the press device. Until now, there has been no guarantee of workpiece stroke. In addition, when the base member that does not directly contribute to the processing of the workpiece is thick, there is a problem that the working space when pressurizing with the press device is impaired.

  The present invention has been made in view of such a problem, and in a mold in which a workpiece moves, a stroke that can be easily placed and is long with respect to the length along the payout direction of the base member. One of the objects is to provide a lift mechanism capable of securing the amount and a mold equipped with the lift mechanism. Another object is to provide a mold that can be easily placed and can be made more compact.

  The present invention employs the following means in order to achieve at least a part of the above-described object.

A lift mechanism capable of discharging a workpiece from a mold using the pressure of a pressurizing device,
A workpiece pressing table that comes into contact with the workpiece and can press the workpiece;
A first guide member that guides the movement of the work pressing table, which is pressed in the dispensing direction of the mold by receiving the pressure of the pressurizing device, by the first movement distance in the dispensing direction;
After the first guide member guides the workpiece pressing table that has been pressed in the discharge direction under the pressure of the pressure device by the first movement distance, it receives the pressure of the pressure device in the discharge direction. A second guide member that guides the movement of the pressed workpiece pressing table in the payout direction by a second movement distance including the first guide member;
The first and second guide members not receiving the pressure of the pressurizing device can be stored so as not to protrude from the back surface of the base, which is the surface opposite to the surface on which the work pressing table is disposed. A base member;
With
The sum of the first moving distance and the second moving distance is larger than the base thickness which is the length of the base member along the payout direction, and the first moving distance and the second moving distance are any. Is set to be smaller than the base thickness.

  In this lift mechanism, after the workpiece pressing table receives the pressure of the pressurizing device and is guided to the first guide member and moves together with the workpiece by the first movement distance in the dispensing direction, the workpiece pressing table including the first guide member is The pressure of the pressurizing device is received, guided to the second guide member, and moved together with the workpiece by the second moving distance in the paying-out direction. Thus, the guide of the total movement distance that the work pressing base moves is shared between the first guide member and the second guide member. Further, the first movement distance of the first guide member and the second movement distance of the second guide member are both shorter than the base thickness, so that the base member does not protrude the first and second guide members from the back surface of the base. Since the back surface of the base becomes flat, it can be easily placed on the pressure device. Further, since the total movement distance of the workpiece pressing table is the sum of the first movement distance guided by the first guide member and the second movement distance guided by the second guide member, it is larger than the base thickness. Become. Therefore, it can be easily placed, and a moving distance of the workpiece pressing table longer than the length along the payout direction of the base member can be ensured. Here, the lift mechanism of the present invention is provided with three or more guide members, the sum of the movable distances that can be guided by all the guide members is larger than the base thickness of the base member, and each guide member can be guided. It is also possible to set such that the moving distance is smaller than the base thickness. If it carries out like this, a guide member can be multi-staged and can be easily mounted, and the movement distance of a work press stand long with respect to the length along the discharge direction of a base member can be secured.

  In the lift mechanism of the present invention, the second guide member is provided with a guide through hole, and the first guide member is fixed to the work pressing base and is inserted into the guide through hole. The movement may be guided by the first movement distance in the payout direction. In this case, the first guide member can be provided inside the second guide member, and thus the compactness can be achieved.

  The lift mechanism of the present invention is an extrusion member that is provided on the work pressing base and is formed to a length that does not protrude from the back surface of the base, and is capable of pushing out the work pressing base in the dispensing direction under the pressure of the pressing device. , May be provided. If it carries out like this, since the surface to press becomes close to a base back surface, it is easy to press with a pressurization apparatus. At this time, the second guide member is provided with an extrusion through-hole, and the extrusion member is inserted into the extrusion through-hole and receives the pressure of the pressurizing device and passes through the extrusion through-hole. The work pressing table may be pushed out by the first movement distance. In this case, the push member can be provided inside the second guide member, so that the size reduction can be achieved.

  In the lift mechanism of the present invention in which the pushing member is not provided, the first guide member may receive the pressure of the pressurizing device and push out the work pressing base in the payout direction. In this case, the member that guides the workpiece pressing table in the paying-out direction has the function of the member that presses the workpiece pressing table, so that the configuration can be simplified.

  In the lift mechanism of the present invention, the second guide member receives a pressure of the pressurizing device and can push out the work pressing base including the first guide member in the payout direction, and the plate It is good also as what is provided with the guide pin which is provided in the shape body and guides the said work press stand including the said 1st guide member to the said discharge direction. If it carries out like this, while receiving the pressure of a pressurization apparatus reliably by a plate-shaped object, a workpiece | work press stand can be reliably guided to the paying-out direction with a guide pin. At this time, the base member is provided with a guide hole into which the guide pin is inserted and can guide the work pressing base in the discharge direction, and the second guide member has the guide pin inserted into the guide hole. May be. If it carries out like this, a 2nd guide member can be reliably guided to the paying-out direction by a base member.

  The mold according to the present invention is any one of the above-described members capable of processing a workpiece processed by the workpiece moving inside and the workpiece processed by the processing member using the pressure of a pressurizing device. And a lift mechanism as described above. The mold lift mechanism described above can be easily placed and can secure a stroke amount longer than the length along the payout direction of the base member. The same effect is produced. In addition, since the stroke amount of the workpiece pressing table can be made longer without changing the thickness of the base member, it is easier to mount than the case where the base member is thickened to increase the stroke amount of the workpiece pressing table. And can be made more compact.

  In the mold of the present invention, the processing member may perform a plurality of processing while the workpiece moves inside. By doing so, the moving distance of the workpiece becomes longer and the length guided by the guide member becomes longer than that in which one work is performed while the workpiece is moving, and therefore, the significance of applying the present invention is high.

  Next, the best mode for carrying out the present invention will be described using examples.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing an outline of a configuration of a press machine 20 for forming a metal part as an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a mold 10 fixed to the press machine 20. 3 is a perspective view of the lift mechanism 70 included in the mold 10, and FIG. 4 is a top view of the lift mechanism 70 included in the mold 10. The press machine 20 is configured as a pressurizing device that molds a workpiece while fixing the mold 10, and includes frames 22, 22 standing upward from an installation portion 21 installed on the left and right of the lowermost part in FIG. 1. A plate-like beam 24 fixed horizontally at the top of the frames 22, 22, an upper main slide 31 supported on the frames 22, 22 below the beam 24 so as to be movable up and down, and an upper main slide An upper mold 50 fixed to an upper fixing plate 59 provided at an upper fixing plate at a lower portion of 31 and a disk-like body fixed horizontally to the frames 22 and 22 below the upper main slide 31. A fixed plate 26, a lower mold 60 of the mold 10 fixed to a bolster 28 provided on the upper portion of the fixed plate 26, and a lower fixed portion 49 installed at the lowermost portion are provided.

  The upper main slide 31 is supported by upper main motors 34 and 34 fixed to the beam 24 so as to be vertically movable via upper main shafts 35 and 35. On the upper side of the upper main slide 31, there is provided a plate-like inner slide 32 supported by inner motors 36, 36 fixed to the beam 24 via inner shafts 37, 37 so as to be movable up and down. The inner slide 32 has an upper inner 32a fixed to the center lower side thereof. An inner pin 52 that transmits the pressure of the vertical movement of the inner slide 32 is fixed to the lower side of the upper inner 32a. In the center of the inner slide 32 and the center of the upper inner 32a, there are provided through holes penetrating in the vertical direction, and the upper portion is a rod-like body that can be moved up and down by an upper core motor 38 fixed to the upper portion of the inner slide 32. The core 23 protrudes downward together with the inner pin 52 through each through hole.

  The fixed plate 26 is formed with a through portion 26a that is a space penetrating in the vertical direction at a substantially center thereof, and a bolster 28 that is a plate-like body is fixed so as to cross over the through portion 26a. A plate-like body supported below the fixed plate 26 so as to be vertically movable by lower main shafts 45, 45 formed upward from lower main motors 44, 44 fixed to the lower fixing portion 49. A lower main slide 41 is provided. The lower main slide 41 is provided with a lower slide 42 that can be inserted into and removed from the penetrating portion 26a at the upper center. On the upper side of the lower slide 42, an equipment pin 43 that transmits the pressure of the lower main slide 41 in the vertical movement is provided. In the center of the lower main slide 41 and the center of the lower slide 42, a through hole penetrating in the vertical direction is provided, and the lower core motor 46 fixed to the lower fixing portion 49 moves the upper and lower through the lower core shaft 47. A lower core 48, which is a movable rod-like body, projects upward through each through hole. Further, in the press machine 20 of the embodiment, the pressure is applied to the upper main slide 31 and the lower main slide 41 by the motor, but the pressure may be applied by hydraulic pressure.

  As shown in FIG. 2, the mold 10 includes an upper mold 50 and a lower mold 60. The upper die 50 includes an inner pin 52 protruding from the upper main slide 31 and a disc-shaped inner plate 58 connected to the tip of the inner pin 52, and a cylindrical fixing portion 51 including an upper main plate 59 through an upper fixing plate 59. 31 is fixed. A tooth profile forming member 55 and an upper punch 56, which are members for forming a workpiece, are fixed to the lower portion of the fixing portion 51 via a fixing plate 51a. The tooth profile forming member 55 is a columnar member having a cylindrical space formed at the center lower portion thereof, and a tooth profile forming groove 55a is formed on a side surface thereof. When the tooth profile forming member 55 is inserted into the lower mold 60, a plate shape is formed. It is a member that forms a tooth profile on the side surface of the workpiece after the workpiece is formed into a cup shape. The upper punch 56 is a columnar member, and is fixed to the tip of the upper core 23 and is fitted inside the lower portion of the tooth profile forming member 55. The upper punch 56 is provided with a convex portion 56a that forms a step on the bottom surface of the workpiece. A cylindrical external punch 54 is disposed on the outer periphery of the tooth shape forming member 55 and the upper punch 56. A cylindrical portion 54a is formed below the external punch 54. The cylindrical portion 54a adjusts the inner shape of the workpiece when the workpiece is formed in a cup shape. The external punch 54 is fixed to the lower end of an outer pin 53 that protrudes from the through hole formed in the fixing plate 51 a so as to be movable up and down outside the tooth profile forming member 55 and the upper punch 56. The upper end of the outer pin 53 is connected to the inner plate 58 and moves up and down as the inner plate 58 moves up and down. Thus, the tooth profile forming member 55 and the upper punch 56 move up and down as the upper main slide 31 moves up and down by the upper main motor 34 (see FIG. 1), and the external punch 54 moves in the inner motor 36 (see FIG. 1). As the inner pin 52 moves up and down, it moves up and down. Although the upper punch 56 is connected to the upper core 23, for convenience of explanation, in this embodiment, the upper punch 56 is described as moving up and down together with the tooth profile forming member 55. Further, in FIG. 2 and subsequent figures, the same pattern is given to the external punch 54 and members (the inner pin 52, the outer pin 53, and the inner plate 58) related to the operation thereof for easy understanding.

  The lower mold 60 includes a base member 61 that fixes the die holding member 62 to the bolster 28, and a cylindrical space that holds the upper portion of the die holding member 62 and forms a workpiece in a cup shape when the upper punch 56 is inserted. A squeezing die 63, a tooth forming die 64 having a cylindrical space held by a die holding member 62 below the squeezing die 63, and a lift mechanism 70 on which a work is placed and can be paid upward by the equipment pins 43. , Is configured. The base member 61 is configured as a die holder for fixing the die holding member 62, and accommodates first and second guide pins 72 and 76, which will be described later, and an extrusion pin 73 so as not to protrude from the back surface (hereinafter referred to as the base back surface). It is a plate-shaped member. The base member 61 is formed with a predetermined length X (hereinafter referred to as a base thickness X) in the workpiece payout direction (here, vertically upward). In this base member 61, a first insertion hole 61a into which a first guide pin 72 of a lift mechanism 70 described later is inserted, a second insertion hole 61b into which a second guide pin 76 is inserted, and an extrusion pin 73 are inserted. The through-hole 61c which is made is provided. The drawing die 63 is formed with a contraction tube portion 63a having an inner diameter smaller than the inner diameter of the upper portion thereof. The tooth profile forming die 64 is formed with a tooth profile forming groove 64a protruding into the inner space forming the tooth profile on the outer surface of the workpiece. The lift mechanism 70 moves up and down as the lower main slide 41 moves up and down by the lower main motor 44 (see FIG. 1). A fixed die 65 is disposed below the tooth mold forming die 64, and a retaining portion 65a formed on the back surface of the fixed die 65 abuts on the upper surface of the middle plate 75 of the lift mechanism 70 described later. This prevents the middle plate 75 from coming out.

  2 to 4, the lift mechanism 70 is provided in a lower part of a cylindrical space formed by the die holding member 62, the drawing die 63 and the tooth profile forming die 64, and can move up and down by placing a workpiece. Workpiece pressing table 71, first guide pin 72 for guiding workpiece pressing table 71 in the payout direction, push pin 73 that presses workpiece pressing table 71 by the pressure of equipment pin 43, and workpiece pressing table by the pressure of equipment pin 43 A middle plate 75 that can move up and down together with 71, and a second guide pin 76 that includes the middle plate 75 and the first guide pin 72 to guide the work pressing base 71 in the dispensing direction. In FIGS. 2 to 4, the work pressing base 71 and the extrusion pin 73 are shown by being shaded. Also, a plurality of first guide pins 72 and second guide pins 76 to be described later are provided, but for ease of understanding, only one of them is shown in FIGS. 2 and 5 and subsequent drawings.

  The work pressing base 71 is a disk-shaped member, and is a member that is provided with a concave portion 71a, which is a circular recess into which the convex portion 56a can be fitted, on the upper surface thereof, and that also molds the bottom surface of the workpiece. A first guide pin 72 is fixed vertically downward to the center of the lower surface of the work pressing base 71, and three push pins 73 are fixed vertically downward to the outside (see FIG. 3). The first guide pin 72 is a cylindrical member, passes through a first guide bush 77 fixed to a guide hole 75 a provided in the center of the middle plate 75, and is inserted into a hole provided in the base member 61. Yes. The first guide pin 72 can guide the work pressing base 71 by a first movement distance L 1 shorter than the base thickness X of the base member 61. An unillustrated retaining portion (not shown) that abuts against the flange portion 75c formed on the middle plate 75 is formed below the first guide pin 72 so that the work pressing base 71 does not come out of the middle plate 75. ing. The extrusion pins 73 are cylindrical members, and are inserted into the holes provided in the base member 61 through the extrusion holes 75 b provided on the outer peripheral side from the center of the middle plate 75. The first guide pins 72 and the extrusion pins 73 are accommodated in the base member 61 without protruding from the back surface of the base.

  The middle plate 75 is a disk-shaped member and is disposed below the work pressing base 71. On the lower surface of the extrusion hole 75 b formed in the middle plate 75, a collar portion 75 c that receives the tip of the equipment pin 43 and can receive pressure from the equipment pin 43 is provided. In addition, three second guide pins 76 are fixed vertically downward at a portion of the lower surface of the middle plate 75 where the extrusion hole 75b is not formed (see FIG. 4). The second guide pin 76 is a cylindrical member, and is inserted into a hole provided in the base member 61 via a second guide bush 76a. The second guide pins 76 can guide the work pressing base 71 and the middle plate 75 by a second movement distance L2 shorter than the base thickness X. Then, the work pressing base 71 is guided to the first guide pin 72 and the second guide pin 76 by the sum of the first movement distance L1 and the second movement distance L2, which is a distance longer than the base thickness X. It is configured to be.

  Next, the operation of the press machine 20 configured as described above, particularly the operation when a workpiece is formed in a plurality of processing steps will be described. FIG. 5 is an explanatory diagram of the mold 10 during molding standby, FIG. 6 is an explanatory diagram of the mold 10 during drawing molding, and FIG. 7 is an explanatory diagram of the mold 10 during compaction molding. FIG. 8 is an explanatory view of the mold 10 at the time of tooth formation, FIG. 9 is an explanatory view of the mold 10 at the time of dispensing, and FIG. 10 is an explanatory view of the work 80 after forming. In the lift mechanism 70 configured as described above, as shown in FIG. 2, when the work pressing base 71 and the middle plate 75 are not pressed by the equipment pins 43, the middle plate 75 is formed below the lower mold 60. It is placed on the upper surface of the base member 61, and the workpiece pressing table 71 is placed on the upper surface of the middle plate 75. And if the extrusion pin 73 receives the pressure from the equipment pin 43, the workpiece | work press stand 71 will be guide | induced to the 1st guide pin 72, will move to a discharge direction, and if the equipment pin 43 contact | abuts the collar part 75c, a 1st guide will be carried out. In a state including the pin 72, the middle plate 75 together with the work pressing base 71 is guided to the second guide pin 76 and moves in the payout direction. Here, at the time of molding standby, as shown in FIG. 5, the work pressing base 71 is pressed by the equipment pins 43, and the lower main motor 44 is driven so that the upper surface of the work pressing base 71 matches the upper surface of the drawing die 63. Further, the upper punch 56 is moved to a position where it does not come into contact with the work pressing base 71, and the upper main motor 34 and the inner motor 36 are driven so that the external punch 54 is aligned with the upper punch 56. Then, a donut plate-like workpiece 80 in which a hole into which the convex portion 56 a can be inserted is formed is arranged at the center of the drawing die 63.

  Next, when the upper main motor 34 and the inner motor 36 are driven to move the upper die 50 downward and the upper punch 56 and the work pressing base 71 come into contact with each other, the upper punch 56 and the outer The punch 54 is moved downward and the work pressing base 71 is moved downward. At this time, the work pressing base 71 is guided downward by the second guide pins 76 via the first guide pins 72 and the middle plate 75. Then, as shown in FIG. 6, the plate-like workpiece 80 is drawn into the drawing die 63 and formed into a cup shape having a hole in the center of the bottom surface (drawing molding). At this time, the cylindrical portion 54 a of the external punch 54 enters the inside of the work 80. Subsequently, the upper punch 56 and the external punch 54 are moved downward and the work pressing base 71 is moved downward. The driving of the inner motor 36 is stopped at a position where the external punch 54 contacts the upper surface of the drawing die 63. Further, when the middle plate 75 is placed on the upper surface of the base member 61, the tip of the equipment pin 43 is separated from the flange portion 75c, and the work pressing base 71 has the first guide while the push pin 73 passes through the push hole 75b. It is guided downward by the pin 72.

  Subsequently, when the workpiece 80 is moved downward in a state where the workpiece 80 is sandwiched between the upper punch 56 and the workpiece pressing base 71 and the workpiece 80 passes through the contracted tube portion 63a of the drawing die 63, as shown in FIG. The workpiece 80 is shrunk in the diametric direction of the cup (constriction tube forming). Then, when the workpiece 80 is moved downward in a state where the workpiece 80 is sandwiched between the upper punch 56 and the workpiece pressing base 71 and the workpiece 80 passes through the tooth profile forming groove 64a of the tooth profile forming die 64, as shown in FIG. A tooth shape is formed on the side surface of the cup-shaped workpiece 80 sandwiched between the tooth shape forming groove 64a and the tooth shape forming groove 55a of the tooth shape forming member 55 (tooth forming shape). At this time, the work pressing base 71 guided downward by the first guide pin 72 while the extrusion pin 73 passes through the extrusion hole 75 b is positioned on the upper surface of the middle plate 75. Finally, the workpiece 80 is moved upward in a state where the workpiece 80 is sandwiched between the upper punch 56 and the workpiece pressing base 71, and the molded workpiece 80 is taken out from the lower mold 60 (dispensing process). At this time, the work pressing base 71 is pressed by the equipment pin 43 via the push pin 73 and is guided to the first guide pin 72 and moves in the payout direction, so that the equipment pin 43 contacts the flange 75c of the middle plate 75. Upon contact, the intermediate plate 75 is guided to the second guide pin 76 together with the work pressing base 71 in a state including the first guide pin 72 by the equipment pin 43 and moves in the payout direction. At this time, the work pressing base 71 has a first guide pin 72, a middle plate 75, and a second guide pin 76 having a sum of the first movement distance L1 and the second movement distance L2 that is longer than the base thickness X. Guided. In this way, as shown in FIG. 10, a cup-shaped molded body having a hole at the center of the bottom surface and a tooth profile formed on the side surface is obtained.

  Here, the correspondence between the components of the present embodiment and the components of the present invention will be clarified. The press machine 20 of the present embodiment corresponds to the pressure device of the present invention, the first guide pin 72 corresponds to the first guide member, the middle plate 75 and the second guide pin 76 correspond to the second guide member, The middle plate 75 corresponds to a plate-like body, the second guide pin 76 corresponds to a guide pin, the extrusion pin 73 corresponds to an extrusion member, and the drawing die 63 and the tooth profile forming die 64 correspond to processing members. The guide hole 75a corresponds to a guide through hole, and the extrusion hole 75b corresponds to an extrusion through hole.

  According to the mold 10 of the present embodiment described in detail above, the work pressing base 71 receives the pressure of the press machine 20 and is guided to the first guide pins 72 and moves together with the work 80 by the first movement distance L1. After the first guide pin 72 guides the work pressing base 71 by the first movement distance L1, the work pressing base 71 including the first guide pin 72 receives the pressure of the press machine 20 and guides it to the second guide pin 76. As a result, the workpiece 80 moves together with the workpiece 80 by the second movement distance L2 in the dispensing direction. In this way, the guide of the total moving distance that the work pressing base 71 moves is shared by the first guide pin 72 and the second guide pin 76. The first moving distance L1 and the second moving distance are both shorter than the base thickness X, and the base member 61 can be stored so that the first and second guide pins 72 and 76 do not protrude from the back surface. Since the back surface of the base is flat, it can be easily placed on the press machine 20. Further, since the total movement distance of the work pressing base 71 is the sum of the first movement distance L1 guided by the first guide pin 72 and the second movement distance guided by the second guide pin 76, the base thickness It is longer than X. Therefore, it can be easily placed on the bolster 28 and a moving distance of the work pressing base 71 longer than the base thickness X can be secured. Further, since the stroke amount of the work pressing base 71 can be made longer without changing the thickness of the base member 61, compared with the case where the base member is made thicker to make the stroke amount of the work pressing base 71 longer. In addition to being easily mounted, it is possible to further reduce the size of the apparatus, and as a result, a larger processing space for the workpiece 80 can be secured.

  Further, the middle plate 75 is provided with a guide hole 75a, and the first guide pin 72 is inserted into the guide hole 75a to guide the movement of the work pressing base 71 in the payout direction. The guide pins 72 can be provided on the inner side of the middle plate 75, so that the size reduction can be achieved. Further, the base member 61 is provided with an extruding pin 73 that is formed in a length that does not protrude from the back surface of the base member 61 and that can receive the pressure of the press machine 20 to push out the work pressing base 71 in the payout direction. It is close to the back surface, and it is easy to press quickly by the equipment pins 43 of the press machine 20 as compared with the press surface near the work pressing base 71. Furthermore, the middle plate 75 is provided with an extrusion hole 75b. The extrusion pin 73 is inserted into the extrusion hole 75b and receives the pressure of the press machine 20 to push out the work pressing base 71 through the extrusion hole 75b. The pins 73 can be provided inside the middle plate 75, so that the size can be reduced. Then, in order to guide the work pressing base 71 guided by the first moving distance L1 by the middle plate 75 and the second guide pin 76 in the dispensing direction, the pressure of the press 20 is reliably received by the middle plate 75 and the second guide. The work pressing base 71 can be reliably guided by the pins 76 in the payout direction. Then, since the second guide pin 76 is inserted into the second insertion hole 61b provided in the base member 61 to guide the work pressing base 71 in the payout direction, the middle plate 75 is reliably guided in the payout direction by the base member 61. can do. Further, since the lower mold 60 performs a plurality of processes while the work 80 moves together with the work pressing base 71, the movement distance of the work 80 compared to the one that performs one process while the work 80 moves. And the length guided by the guide member becomes long, and therefore, the significance of applying the present invention is high.

  In addition, this invention is not limited to the Example mentioned above at all, and as long as it belongs to the technical scope of this invention, it cannot be overemphasized that it can implement with a various aspect.

  For example, in the above-described embodiment, the first guide pin 72 that guides the work pressing base 71 in the payout direction and the push-out pin 73 that presses the work pressing base 71 are provided on the lower surface of the work pressing base 71. As shown in FIG. 6, an extrusion guide pin 172 that guides the work pressing base 71 in the payout direction and presses it with the pressure of the equipment pin 43 may be provided on the lower surface of the work pressing base 71. FIGS. 11A and 11B are explanatory diagrams of the lift mechanism 170 of the lower mold 160, where FIG. 11A is a view before pressing, and FIG. 11B is a view during standby before molding. In addition, about the structure same as the Example mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted. In the lift mechanism 170, three extrusion guide pins 172 are provided on the lower surface of the work pressing base 71, and three extrusion guide holes 175a are provided at positions where the extrusion guide pins 172 can pass through the middle plate. Then, when the extrusion guide pin 172 is pressed by the equipment pin 43 from the state before the pressing (see FIG. 11A), the work pressing base 71 is pressed and guided by the extrusion guide pin 172 and is discharged ( When the equipment pin 43 comes into contact with the flange portion 175c of the middle plate 175, the middle plate 175 pressed by the equipment pin 43 includes the push guide pin 172 and the work pressing base 71. 2 Guided by the guide pin 76 and moves in the payout direction (see FIG. 11B). At this time, the workpiece pressing table 71 has the first guide pin 72, the middle plate 75, and the second guide pin 76 with the longest sum of the first moving distance L1 and the second moving distance L2 longer than the base thickness X. Guided by By doing so, it is not necessary to separately provide a member that presses the work pressing base 71 and a member that guides it, so that the configuration can be simplified.

  In the above-described embodiment, the push pin 73 that presses the work pressing base 71 is provided on the lower surface of the work pressing base 71, but this may be omitted as shown in FIG. 12A and 12B are explanatory diagrams of the lift mechanism 270 of the lower mold 260, where FIG. 12A is a diagram before pressing, and FIG. 12B is a diagram during standby before molding. In the lift mechanism 270, a stopper 272 a that restricts the passage of the guide hole 75 a is provided at the other end of the first guide pin 272 whose one end is connected to the lower surface of the work pressing base 71. An extrusion hole 75b is provided with a diameter through which 43 can pass. In the lift mechanism 270, the first guide pin 272 can guide the work pressing base 71 by the first movement distance M1 and the second guide pin 76 by the second movement distance M2. The first movement distance M1 and the second movement distance M2 are set shorter than the base thickness Y, respectively, and the sum of the first movement distance M1 and the second movement distance M2 is longer than the base thickness Y. Is formed. Then, after the equipment pin 43 passes through the extrusion hole 75b and comes into contact with the work pressing base 71 from the state before pressing (see FIG. 12A), the work pressing base 71 is pressed by the equipment pin 43. When guided by the first guide pin 272 and moved in the payout direction (vertically upward), when the stopper 272a comes into contact with the lower surface of the middle plate 275, the middle plate 275 is pulled up by the first guide pin 272, and the middle plate pulled up. In a state where the 275 includes the extrusion guide pin 272, it is guided to the second guide pin 76 together with the work pressing base 71 and moves in the payout direction (see FIG. 12B). At this time, the work pressing base 71 has the first guide pin 272, the middle plate 75, and the second guide pin 76 with the longest sum of the first movement distance M1 and the second movement distance M2 longer than the base thickness Y. Guided by By doing so, the member that presses the work pressing base 71 can be omitted, and the configuration can be simplified.

  In the above-described embodiment, the work pressing base 71 is guided in the payout direction in two steps using the middle plate 75, the first guide pin 72, and the second guide pin 76, but as shown in FIG. It is good also as what guides the workpiece | work press stand 71 in the paying-out direction in three steps or more. FIGS. 13A and 13B are explanatory diagrams of the lift mechanism 370 of the lower mold 360, where FIG. 13A is a view before pressing, and FIG. 13B is a view during standby before molding. The lift mechanism 370 is provided with an extrusion guide pin 372 that presses the work pressing base 71 and guides it in the dispensing direction at the center of the lower surface of the work pressing base 71, and is closed by the upper surface below the work pressing base 71. An upper member 375 having a shape in which a flange 375a is provided on the outer periphery of the opening edge of the lower portion of the cylinder and an extrusion guide hole 375b is provided on the upper surface, and an opening in the lower portion of the cylinder that is disposed outside the upper member 375 and is closed by the upper surface And a middle member 376 having a shape in which a flange 376a is provided on the outer periphery of the edge and a member hole 376b into which the upper surface of the upper member 375 can be inserted is provided on the upper surface. The extrusion guide pins 372, the upper member 375, and the middle member 376 have a function of guiding the work pressing base 71 in the payout direction, and can be guided by the movement distances N1, N2, and N3, respectively. Further, the movement distances N1, N2, and N3 are set shorter than the base thickness Z, respectively, and the sum of all the movement distances N1, N2, and N3 is set longer than the base thickness Z. In the lower mold 360, the work pressing base 71 is pressed by the lower core 48 that can move up and down by the pressure of the lower core motor 46. When the extrusion guide pin 372 is pressed by the lower core 48 from the state before pressing (see FIG. 13A), the workpiece pressing table 71 is pressed and guided by the extrusion guide pin 372 and is discharged (see FIG. When the lower core 48 comes into contact with the upper inner side of the upper member 375 via the extrusion guide pin 372, the upper member 375 is pressed by the lower core 48, and the pressed upper member 375 is pushed into the extrusion guide pin. In the state including 372, the flange 375 a is guided to the inner wall of the middle member 376 together with the work pressing base 71 and moves in the payout direction. Subsequently, when the collar portion 375a abuts on the inner side of the upper surface of the intermediate member 376, the intermediate member 376 is pushed up, and the pressed upper member 375 includes the extrusion guide pins 372 and the intermediate member 376. At the same time, the flange portion 376a is guided to the inner wall of the base member 61 and moves in the payout direction (see FIG. 13B). At this time, the work pressing base 71 is guided to the lift mechanism 370 with the sum of all the moving distances N1, N2, and N3 longer than the base thickness X as the longest. In this way, the member that guides the work pressing base 71 has three stages, so that it can be easily placed on the bolster 28 and the moving distance of the work pressing base 71 longer than the base thickness Z is secured. As a result, further downsizing can be achieved.

  In the above-described embodiment, the workpiece pressing base 71 is applied to the one that moves vertically upward and delivers the workpiece 80. However, the upper mold 50 is provided with the lift mechanism 70, and the workpiece pressing base 71 is moved downward. The present invention may be applied to a workpiece that pays out the workpiece 80. Alternatively, the lift mechanism 70 may be provided horizontally, and the workpiece pressing base 71 may be moved horizontally to apply the workpiece 80.

  In the above embodiment, the middle plate 75 is provided with the guide hole 75a and the first guide pin 72 is inserted into the guide hole 75a for guidance. However, the middle plate 75 is not provided with the guide hole 75a. The first guide pin 72 may be disposed outside the 75 to guide it. Even in this case, an installation space for the first guide pin 72 is required. However, the first guide pin 72 can be easily placed on the bolster 28 and a moving distance of the work pressing base 71 longer than the base thickness X can be secured.

  In the embodiment described above, the middle plate 75 is provided with the extrusion hole 75b, and the extrusion pin 73 is inserted into the extrusion hole 75b and pressed by the equipment pin 43. However, the middle plate 75 is not provided with the extrusion hole 75b. In addition, the push pin 73 may move up and down on the outside of the middle plate 75. Even in this case, an installation space for the push pin 73 is required. However, the push pin 73 can be easily placed on the bolster 28 and the moving distance of the work pressing base 71 longer than the base thickness X can be secured.

  In the above-described embodiment, the workpiece pressing base 71 sandwiches the workpiece 80 with the upper punch 56 to form the workpiece 80. However, the workpiece pressing base 71 sandwiches the workpiece 80 with the upper punch 56. It is good also as what shape | molds. At this time, another member for forming the workpiece 80 may be placed on the workpiece pressing base 71.

  In the embodiment described above, the mold 10 for forming the workpiece 80 provided with the lift mechanism 70 and having the tooth profile formed on the side surface has been described. However, the mold for molding the workpiece 80 is not particularly limited to this, for example, It may be used as a molding die for other cup-shaped molded bodies, a molding die used for molding a long object such as a shaft, a molding die such as a CVT sheave, and the like. It is good also as a type. Even in this case, the same effect as the above-described embodiment can be obtained.

  In the above-described embodiments, the description has been given of the case in which the workpiece 80 performs a plurality of machining steps when moving inside the mold 10. However, the embodiment may be applied to a case in which a single machining step is performed.

It is a block diagram which shows the outline of a structure of the press 20 as one Example of this invention. It is explanatory drawing of the metal mold | die 10 fixed to the press machine 20. FIG. It is a perspective view of the lift mechanism 70 with which the metal mold | die 10 is provided. FIG. 3 is a top view of a lift mechanism 70 provided in the mold 10. It is explanatory drawing of the metal mold | die 10 in molding standby. It is explanatory drawing of the metal mold | die 10 at the time of drawing. It is explanatory drawing of the metal mold | die 10 at the time of reduced tube molding. It is explanatory drawing of the metal mold | die 10 at the time of tooth formation. It is explanatory drawing of the metal mold | die 10 at the time of paying out. It is explanatory drawing of the workpiece | work 80 after shaping | molding. It is explanatory drawing of the lift mechanism 170 of the lower mold | type 160, (a) is a figure before a press, (b) is a figure at the time of standby before shaping | molding. It is explanatory drawing of the lift mechanism 270 of the lower mold | type 260, (a) is a figure before a press, (b) is a figure at the time of standby before shaping | molding. It is explanatory drawing of the lift mechanism 370 of the lower mold | type 360, (a) is a figure before a press, (b) is a figure at the time of standby before shaping | molding.

Explanation of symbols

  10 Die, 20 Press, 21 Installation, 22 Frame, 23 Upper Core, 24 Beam, 26 Fixed Plate, 26a Through Part, 28 Bolster, 31 Upper Main Slide, 32 Inner Slide, 32a Upper Inner, 34 Upper Main Motor 35 Upper main shaft, 36 Inner motor, 37 Inner shaft, 38 Upper core motor, 41 Lower main slide, 42 Lower slide, 43 Equipment pins, 44 Lower main motor, 45 Lower main shaft, 46 Lower core motor, 47 Lower core shaft, 48 Lower core, 49 Lower fixed part, 50 Upper mold, 51 Fixed part, 51a Fixed plate, 52 Inner pin, 53 Outer pin, 54 External punch, 54a Cylindrical part, 55 Tooth profile forming member, 55a Tooth mold forming groove, 56 Upper punch, 56a convex portion, 8 Inner plate, 59 Upper fixing plate, 60, 160, 260, 360 Lower mold, 61 Base member, 61a First insertion hole, 61b Second insertion hole, 61c Through hole, 62 Die holding member, 63 Diaphragm die, 63a Shrink Pipe portion, 64 tooth forming die, 64 tooth forming groove a, 65 fixed die, 65a retaining portion, 70, 170, 270, 370 lift mechanism, 71 work pressing base, 71a concave portion, 72, 272 first guide pin 73 Extrusion pin, 75, 175, 275 Middle plate, 75a Guide hole, 75b Extrusion hole, 75c, 375a, 376a collar part, 76 Second guide pin, 76a Second guide bush, 77 First guide bush, 80 Workpiece, 172,372 Extrusion guide pins, 175a, 375b Extrusion guide holes, 376b Member holes, 272a Stopper, 375 Upper member, 376 Middle member.

Claims (9)

A lift mechanism capable of discharging a workpiece from a mold using the pressure of a pressurizing device,
A workpiece pressing table that comes into contact with the workpiece and can press the workpiece;
A first guide member that guides the movement of the work pressing table, which is pressed in the dispensing direction of the mold by receiving the pressure of the pressurizing device, by the first movement distance in the dispensing direction;
After the first guide member guides the workpiece pressing table that has been pressed in the discharge direction under the pressure of the pressure device by the first movement distance, it receives the pressure of the pressure device in the discharge direction. A second guide member that guides the movement of the pressed workpiece pressing table in the payout direction by a second movement distance including the first guide member;
The first and second guide members not receiving the pressure of the pressurizing device can be stored so as not to protrude from the back surface of the base, which is the surface opposite to the surface on which the work pressing table is disposed. A base member;
With
The sum of the first moving distance and the second moving distance is larger than the base thickness which is the length of the base member along the payout direction, and the first moving distance and the second moving distance are any. Is set to be smaller than the base thickness,
Lift mechanism. The second guide member is provided with a guide through hole,
2. The lift mechanism according to claim 1, wherein the first guide member is fixed to the work pressing base and is inserted into the guide through hole to guide the movement of the work pressing base in the payout direction by a first movement distance. . The lift mechanism according to claim 1 or 2,
A lift mechanism provided with an extruding member that is provided on the work pressing table and has a length that does not protrude from the back surface of the base, and is capable of pushing out the work pressing table in the dispensing direction under the pressure of the pressing device. The second guide member is provided with an extrusion through hole,
4. The lift according to claim 3, wherein the push member is inserted into the push-through through hole, receives the pressure of the pressurizing device, and pushes the work pressing base through the push through hole by the first movement distance. mechanism.   3. The lift mechanism according to claim 1, wherein the first guide member is capable of pushing out the work pressing base in the payout direction under the pressure of the pressure device.   The second guide member is provided with a plate-like body capable of receiving the pressure of the pressurizing device and pushing out the workpiece pressing table including the first guide member in the discharge direction, and the first guide member. The lift mechanism according to claim 1, further comprising a guide pin that guides the workpiece pressing table in the payout direction including one guide member. The base member is provided with a guide hole in which the guide pin is inserted and the work pressing base can be guided in the payout direction,
The lift mechanism according to claim 6, wherein the second guide member has the guide pin inserted into the guide hole. A machining member for machining the workpiece by moving the workpiece inside;
The lift mechanism according to any one of claims 1 to 7, wherein the workpiece processed by the processing member can be discharged using the pressure of a pressurizing device;
Mold with.   The mold according to claim 8, wherein the processing member performs a plurality of processing while the workpiece moves inside.