JP4774880B2 - Work splash prevention device - Google Patents

Description

  The present invention relates to a workpiece splash prevention device for preventing a workpiece panel (workpiece) thrown into a mold from jumping up.

  For example, there is a composite gauge that is fixed to a part of a mold for molding a panel used in an automobile or the like into a predetermined shape, and that works such as the presence or absence of a workpiece (work panel) to be inserted into the mold and a guide It has been proposed (see, for example, Patent Document 1).

  The composite gauge described in Patent Document 1 includes guide means (guide plate) for guiding a work panel placed in a mold, sheet support means (support plate) for placing the work panel, and whether or not a work is placed. An input detection means (detection lever) for discrimination is provided in one gauge body.

  The support plate, which is a sheet support means, has a placement portion on which the work panel is placed, and is pivotally supported by the support member so as to be swingable. The support plate is provided with a counterweight for supporting the weight of the work panel and for returning the placing portion that has rotated and escaped when pressed by the upper die of the mold to the original position.

In such a composite gauge, when a workpiece is put into the mold, the workpiece is positioned by a guide plate that is a guide means, and the workpiece panel is brought into contact with a detection lever that is a loading detection means, and at the same time the presence or absence of the workpiece is detected. The work panel is held on the mounting portion of the support plate which is the sheet support means. When the upper die is pushed down, the placing portion is rotated backward about the support shaft by the upper die pressing force to escape, and the work panel is sandwiched between the upper die and the lower die and formed into a predetermined shape. . When the pressing force of the mounting portion is released, the support plate automatically returns to the original state by the weight of the counterweight and is positioned by the positioning member.
JP 2005-59073 A

  In the composite gauge described in Patent Document 1, when the molded work panel has material inflow (a phenomenon in which the material flows inward by drawing), the molded panel can be taken out from the mold, but the yield is low. In the case of overhang molding (no material inflow) aiming at improvement, the panel collides with the mounting portion and cannot be taken out from the mold.

  Therefore, an object of the present invention is to provide a workpiece splash prevention device that can take out a panel after molding from a mold even in the case of overhang molding without material inflow.

  The present invention provides a jig body that is attached to a mold for forming a work panel, and one end side part that is rotatably attached to the jig body and prevents the work panel thrown into the mold from jumping up by contact. A bounce preventing member having a locking means for locking the bounce preventing member at a position for preventing the work panel from being bounced, and the bounce preventing member at the time of taking out the panel after molding by a mold. And a lock release means for releasing the lock by pushing up the other end side portion and rotating the splash preventing member to retract the one end side portion to a non-interference position with the work panel.

  According to the workpiece splash prevention device of the present invention, even in the case of overhang molding without material inflow, at the time of taking out the panel after molding, one end side portion of the splash prevention member is retracted to a non-interference position where it does not interfere with the workpiece panel. The panel can be removed from the mold without hitting anywhere.

  Hereinafter, specific embodiments of a workpiece splash prevention device to which the present invention is applied will be described in detail with reference to the drawings.

"Structure of work splash prevention device"
FIG. 1 is an overall perspective view of the workpiece splash prevention device of the present embodiment, FIG. 2 is an exploded perspective view of a part of the workpiece splash prevention device of the present embodiment, and FIG. 3 is a workpiece splash projection of the present embodiment. The unlocking means in the prevention device is shown, (A) is an exploded perspective view, (B) is a cross-sectional view taken along the line AA, FIG. 4 is a perspective view showing a state where the work splash prevention device is attached to the lower mold of the mold, 5 is a cross-sectional view taken along line BB in FIG.

  As shown in FIGS. 1 to 4, the workpiece splash prevention device 1 includes a jig body 4 that is attached to a lower mold 3 that is a mold for molding a work panel (work sheet as a workpiece) 2, a jig The jig body 4 is provided with a spring-up preventing member 5 that is rotatably attached to the main body 4 and has an end side portion 5A that prevents the work panel 2 thrown into the mold from bouncing up by contact. A locking member (supporting member) 6 that is a locking means for locking the splashing prevention member 5 at a position where the splashing of the panel 2 is prevented, and the other end side of the splashing prevention member 5 when the panel is taken out after molding by a mold. An unlocking hand for releasing the lock by pushing up the portion 5B and rotating the splash preventing member 5 to retract the one end side portion 5A to a non-interference position with the work panel 2 And a 7.

  The jig body 4 includes a base portion 9 fixed to the lower mold 3 with bolts 8 and a rising portion 10 that rises substantially vertically from one end side of the base 9. The rising portion 10 is formed with a guide guide portion 11 for bringing the end edge of the work panel 2 into contact with the die face surface 3A of the lower die 3 when the work panel 2 is put into the lower die 3. Has been. Further, the rising portion 10 is formed with two through holes 12 and 13 which are two long holes at a predetermined distance at the upper and lower positions.

  The bolt 16 is inserted into the lower through-hole 13 among fastening means including a nut 15 and a bolt 16 for fixing the rotating shaft 14 for rotatably mounting the spring-up preventing member 5 to the rising portion 10. The rotating shaft 14 is inserted into a circular center hole 17 formed in the splash prevention member 5, and then bolts 16 are inserted into both sides of the rotating shaft 14 through shaft insertion holes 20 of the rotating shaft 14 via washers 18 and 19. Further, the nut 15 is inserted into the through-hole 13 of the rising portion 10 and protruded to the opposite side of the rising portion 10, and the nut 15 is fixed by being attached via a washer 21. As a result, the splash preventing member 5 is rotatable around the rotary shaft 14 fixed to the side surface of the rising portion 10 by the bolt 16 and the nut 15.

  Bolts 22 of bolts 22 and nuts 23 that function as anti-rotation members that prevent the later-described jump-up preventing member 5 from rotating beyond a predetermined retracted position are inserted into the upper through-hole 12. These two through holes 12 and 13 make it possible to adjust the mounting position of the rotating shaft 14 of the splash prevention member 5 and the rotation stop position of the splash prevention member 5 in the protruding direction with respect to the work panel 2 indicated by the arrow X in FIG. Therefore, it has an oval shape.

  Further, the rising portion 10 is provided with a lock member 6 that locks the jump-up preventing member 5 at a position that prevents the work panel 2 from jumping up. The lock member 6 is provided as a rectangular block at a position near the one side edge on the opposite side of the guide guide portion 11 below the lower through hole 13. The lower surface 5a of the splash prevention member 5 is in contact with the upper surface 6a of the lock member 6. The position where the lower surface 5a of the bounce prevention member 5 comes into contact with the upper surface 6a of the lock member 6 is the bounce prevention position where the bounce of the work panel 2 is prevented. Further, when the lower surface 5a of the spring-up preventing member 5 comes into contact with the upper surface 6a of the lock member 6, the rotation of the spring-up preventing member 5 with respect to the rotating shaft 14 is locked. This position becomes the lock position of the splash preventing member 5.

  The splash prevention member 5 is provided with a center of gravity at a position closer to the other end side portion 5B than the rotary shaft 14 so as to return to the splash prevention position which is the original position by its own weight after the work panel 2 is inserted into the lower mold 3. It is. This spring-up preventing member 5 has one end side portion 5A that prevents the work panel 2 from bouncing by contact on the front side closer to the work panel 2 than the rotating shaft 14. An inclined surface 5b is formed on the one end side portion 5A for allowing the work panel 2 falling along the guide guide portion 11 to the die face surface 3A of the lower mold 3 to smoothly enter. Yes. Further, the spring-up preventing member 5 is provided with the other end side portion 5B which is pushed up by a lock release means 7 which will be described later in a direction away from the work panel 2 from the rotating shaft 14.

  The unlocking means 7 includes an unlocking member 24 that comes into contact with the other end portion 5B of the spring-up preventing member 5 when unlocking, and an air cylinder that is a movable mechanism that moves the unlocking member 24 in the upward direction and in the opposite direction. 25. The lock release member 24 is attached to the tip of the rod 26 of the air cylinder 25 and moves up and down in accordance with the forward / backward operation (vertical movement operation) of the rod 26. The unlocking member 24 is not connected to the other end side portion 5B of the spring-up preventing member 5, and comes into contact with the other end side portion 5B only when unlocking. Therefore, when the spring-up preventing member 5 is in the spring-up preventing position (position shown in FIG. 1), the lock release member 24 and the other end side portion 5B are not in contact with each other, and there is a gap between them. (See FIG. 6A described later).

  The contact portion 27 of the lock release member 24 that comes into contact with the other end side portion 5B of the spring-up preventing member 5 at the time of unlocking is an arc-shaped portion having a convex tip. On both sides of the contact portion 27, guide pieces 28 are provided for guiding the other end side portion 5B of the spring-up preventing member 5 so as to be sandwiched from both sides thereof. The lock release member 24 moves up and down in the Z-axis direction in FIG. 1 when the rod 26 is moved back and forth (in and out) by the air cylinder 25, and locks the other end side portion 5B of the bounce prevention member 5 in the locked state. The release member 24 is pushed up to rotate the bounce prevention member 5 to retract the one end side portion 5A to a non-interference position where it does not interfere with the work panel 2 to release the lock, and the bounce prevention member 5 is in its original position. Return to the position to prevent splashing.

  As shown in FIGS. 4 and 5, the workpiece splash prevention device 1 configured in this way is arranged on the downwardly inclined side of the die face surface 3 </ b> A on which the work panel 2 of the lower mold 3 is placed, which is greatly inclined. The In the present embodiment, the workpiece splash prevention device 1 is provided only at one place on the downward slope side. In addition, a plurality of work guide members 29 are provided around the outer periphery of the die face surface 3A of the lower mold 3 for smoothly loading the work panel 2 onto the die face surface 3A.

“Explanation of work jump prevention operation”
6A is a view showing a state before the work panel is inserted, FIG. 6B is a view showing a state where the work panel placed in the lower mold is placed on the die face surface, and FIG. 7A. Fig. 7 is a view showing a state in which the work panel that has been bounced off from the die face surface by the pressing force of the upper die is pressed at one end side to prevent the bounce, and FIG. It is a figure which shows the state which takes out to the non-interference position which does not interfere with, and takes out the work panel after shaping | molding, after releasing a lock | rock.

  In the state before the work panel is put in, the splash prevention member 5 is in the splash prevention position, which is the stationary state shown in FIG. In this spring-up prevention position, the upper surface 6a of the lock member 6 is in contact with the lower surface 5a of the spring-up prevention member 5, and the rotation of the spring-up prevention member 5 with respect to the rotary shaft 14 is locked. That is, the spring-up preventing member 5 is in a locked state in which it cannot rotate clockwise around the rotation shaft 14.

  Next, when the work panel 2 is put into the lower mold 3, the work panel 2 is guided by the plurality of work guide members 29 arranged around the outer periphery of the die face surface 3 </ b> A and the guide guide portion 11 of the work splash prevention device 1. Fall freely. During the fall of the work panel 2, the end of the panel comes into contact with the inclined surface 5 b of the spring-up preventing member 5, and the one-end side 5 A is pushed down so that the spring-up preventing member 5 is centered on the rotating shaft 14. Rotate clockwise as indicated by. As a result, the work panel 2 is placed on the die face surface 3A of the lower mold 3, and at the same time, the splash prevention member 5 returns to the splash prevention position which is the original position by its own weight.

  Next, as shown in FIG. 5, when the upper die 30 is lowered with respect to the lower die 3, the upper end (upper portion) of the work panel 2 placed on the inclined die face surface 3 </ b> A becomes the upper die 30. Pressed. Then, the lower end part (lower side part) of the work panel 2 jumps up to balance the work panel 2. The lower end portion of the work panel 2 that has been bounced up comes into contact with one end side portion 5A of the bounce prevention member 5 that is in the bounce prevention position shown in FIG. When the lower end portion of the work panel 2 comes into contact with the one end portion 5A, the work panel 2 is prevented from jumping up from the die face surface 3A. When the work panel 2 is bounced up, an impact force acts on one end side 5A of the bounce-up prevention member 5. This bounce-up prevention member 5 is rotated clockwise by the lock member 6 as indicated by an arrow B in the figure. Without being locked. As a result, the work panel 2 can be placed along the die face surface 3A.

  Then, the upper die 30 is further lowered and the work panel 2 placed on the die face surface 3A is formed into a predetermined shape by the cooperative action with the lower die 3. At this time, since the end of the panel flows inward due to the inflow of material in the case of normal drawing, the molded work panel 2 can be taken out from the lower mold 3 without interference with the one end side 5A of the splash prevention member 5. .

  However, in order to improve the yield of the material and to secure the panel's tension rigidity, when performing overhang molding (processing that does not flow around the material and the molding is completed by the elongation of the material itself), there is no material inflow. The end portion and the one end side portion 5 </ b> A of the splash preventing member 5 interfere with each other so that the work panel 2 cannot be removed from the lower mold 3. FIG. 8 shows a case where the unlocking means 7 according to the present invention is not provided, and shows a state in which the work panel 2 cannot be taken out from the lower mold 3 due to interference between the panel end portion and the one end side portion 5A of the splash prevention member 5. ing.

  Therefore, in the present embodiment, as shown in FIG. 7B, when the panel is removed, the rod 26 is lifted by the air cylinder 25 as indicated by the arrow C and jumped up by the unlocking member 24 attached to the tip of the rod. The other end side part 5B of the prevention member 5 is pushed up, the jump prevention member 5 is rotated, and the one end side part 5A is retracted to a non-interference position where it does not interfere with the work panel 2. The rotational movement of the splash prevention member 5 pushed up by the unlocking member 24 stops when the other end side portion 5B comes into contact with the bolt 22 that functions as a detent member, and the splash prevention member 5 rotates beyond a predetermined retracted position. To be prevented.

  The work panel 2 is taken out from the lower mold 3 after retracting to a position where the splash prevention member 5 does not come into contact with the panel end. After the work panel 2 is taken out, the rod 26 of the air cylinder 25 is lowered to return the splash prevention member 5 to the original jump prevention position.

  According to the workpiece splash prevention device 1 configured as described above, even in the case of overhang forming without material inflow, the one end side portion 5A of the splash prevention member 5 does not interfere with the workpiece panel 2 when the panel after molding is taken out. Since the lock release means 7 is retracted to the interference position, the panel can be taken out from the lower mold 3 without hitting anywhere.

  Moreover, according to the workpiece splash prevention device 1 of the present embodiment, the lock release means 7 is connected to the other end side portion 5B of the splash prevention member 5 when unlocked, and the lock release member 24 is With the air cylinder 25 that is movable in the pushing-up direction and the opposite direction, the lock release means 7 can be configured with a simple device configuration. Even if the lock release member 24 is provided, the lock release member 24 is provided. Is not connected to the other end portion 5B, so that when the work panel 2 is put into the lower mold 3 and placed on the die face surface 3A, the jumping prevention member 5 can be easily lifted by its own weight. Can be rotated.

  Further, according to the workpiece positioning support device 1 of the present embodiment, when the splash prevention member 5 is in the locked position, there is a gap between the lock release member 24 and the other end side portion 5B of the splash prevention member 5. Since it is provided, similarly, the splash prevention member 5 can be correctly returned to the splash prevention position.

  Further, according to the workpiece positioning support device 1 of the present embodiment, the contact portion 27 of the unlocking member 24 that contacts the other end side portion 5B of the splash-up preventing member 5 is an arc-shaped portion having a convex tip. As compared with the case where the contact portion 27 is a flat surface, the contact resistance is small, and the other end side portion 5B of the spring-up preventing member 5 is easily lifted smoothly.

  Further, according to the workpiece positioning support device 1 of the present embodiment, the bolt 22 that is a rotation preventing member that prevents the splash-up preventing member 5 from rotating beyond a predetermined retracted position when the lock release member 24 is pushed up is provided. Since it is provided in the jig body 4, it is possible to prevent the jumping prevention member 5 from rotating beyond the retracted position.

  Further, according to the workpiece positioning support device 1 of the present embodiment, since the guide body 11 for guiding the work panel 2 to the lower mold 3 is provided in the jig body 4, a plurality of functions can be provided to one device. You can have it.

It is a whole perspective view of the work splash prevention device of this embodiment. It is a perspective view which decomposes | disassembles and shows a part of workpiece | work splash prevention apparatus of this Embodiment. The lock release means in the workpiece splash prevention apparatus of this Embodiment is shown, (A) is a disassembled perspective view, (B) is an AA sectional view. It is a perspective view which shows the state which attached the workpiece splash prevention apparatus to the lower mold | type of metal mold | die. It is the BB sectional view taken on the line of FIG. 6A is a view showing a state before the work panel is inserted, and FIG. 6B is a view showing a state where the work panel put into the lower mold is placed on the die face surface. FIG. 7A is a view showing a state in which the work panel that has been bounced up from the die face surface by the pressing force of the upper die is pressed at one end side to prevent the bounce, and FIG. It is a figure which shows the state which takes out the workpiece | work panel after shaping | molding, after retracting a side part to the non-interference position which does not interfere with a workpiece | work panel, and releasing a lock | rock. FIGS. 7A and 7B show the state corresponding to FIGS. 7A and 7B when there is no unlocking means according to the present invention, and the work panel can be taken out from the lower mold due to interference between the panel end and the one end side of the splash prevention member. It is the figure which showed the state which disappeared.

Explanation of symbols

1 ... Work splash prevention device 2 ... Work panel (workpiece)
3 ... Lower mold (mold)
3A ... Die face surface 4 ... Jig body 5 ... Bounce prevention member 5A ... One end side 5B ... Other end side 6 ... Lock member (locking means)
DESCRIPTION OF SYMBOLS 7 ... Lock release means 11 ... Guide guide part 14 ... Rotating shaft 24 ... Lock release member (lock release means)
25 ... Air cylinder (lock release means)
26 ... Rod (lock release means)
27 ... Contact part of unlocking member 30 ... Upper mold (mold)

Claims (6)

A jig body attached to a mold for forming a work panel;
A flip-up preventing member that is rotatably attached to the jig main body and has one end side portion that prevents the work panel thrown into the mold from bouncing up by contact,
Lock means provided on the jig main body and locking the splash preventing member at a position where the workpiece panel is prevented from jumping;
At the time of taking out the panel after molding by the mold, the other end side portion of the bounce prevention member is pushed up to rotate the bounce prevention member to retract the one end side portion to a non-interference position with the work panel. An apparatus for preventing the workpiece from jumping up, comprising: unlocking means for releasing the lock. The workpiece splash prevention device according to claim 1,
The unlocking means is disconnected from the spring-up preventing member, and is movable in the unlocking member that contacts the other end side of the spring-up preventing member when unlocked, and in the direction in which the unlocking member is pushed up and in the opposite direction. A work splash prevention device characterized by comprising a movable mechanism. The workpiece splash prevention device according to claim 2,
A workpiece splash prevention device, wherein a gap is provided between the lock release member and the other end side portion of the splash prevention member when the splash prevention member is in the locked position. The workpiece splash prevention device according to claim 2 or 3,
The workpiece splash prevention device, wherein a contact portion of the lock release member that contacts the other end side portion of the splash prevention member is an arc-shaped portion having a convex tip. The workpiece splash prevention device according to any one of claims 2 to 4,
The jig body is provided with a rotation preventing member that prevents the splash prevention member from rotating beyond a predetermined retracted position when the lock release member is pushed up. . The workpiece splash prevention device according to any one of claims 1 to 5,
The jig body is provided with a guide portion for guiding the work panel to the mold.

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