JP2010269368A - Press die structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a press die structure in which a stripper plate and a die plate are easily attachable and detachable to/from one side direction in the vertical space of the press die without accompanying the vertical movement of a ram. <P>SOLUTION: When changing the stripper plate 13 and the die plate 16, by releasing fixation of the stripper plate 13 and the die plate 16 to a punch plate 12 and a lower die backing plate 15 corresponding to them in a work space in the vertical direction of the press die 10 and sliding these stripper plate 13 and the die plate 16 to the corresponding punch plate 12 and the lower die backing plate 15 in a predetermined direction via a slide guiding means 40, the press die is taken out to the outside of the press die 10 and another stripper plate and die plate can be attached by performing work inversely to the detaching work. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention includes a press mold structure, in particular, a punching process, a punching process, a flatness correction process, and a trimming process of a metal plate to be processed that is drawn out from a rolled state and successively fed in a stepwise manner. The present invention relates to a press mold structure that is effective when applied to a progressive press mold apparatus.

In a conventional press mold structure, for example, as shown in Patent Document 1, the upper and lower molds are separated into a holder and a cushion insert, and the cushion insert is used as a corresponding holder. On the other hand, there are known ones that are detachably inserted from the front opening.

JP-A-10-156597

  In the conventional press mold structure, the upper and lower molds are configured separately from the upper and lower cushion inserts, respectively. After the mold and the lower mold are combined, the clamp is released from each cushion insert and then removed, and another mold is attached.

For this reason, when the mold is removed, the ram is once moved down, the upper and lower molds are combined, then the ram is raised and the upper and lower molds are removed from the press machine (see paragraphs [0015], [ [0016] and [0020]), it is necessary to say that the work efficiency cannot be improved so much.

  In particular, in a progressive press mold apparatus that continuously feeds a rolled metal plate to a plurality of press working parts connected in series and continuously presses in multiple stages, Since the metal plate to be processed exists in a long band shape in the progressive direction between the lower die and the lower die, the conventional die changing operation becomes impossible.

Therefore, the present invention does not involve up and down movement of the ram when replacing the stripper plate corresponding to the upper die and the die plate corresponding to the lower die, and the stripper plate and die plate are installed in the vertical working space of the press die. It is an object of the present invention to provide a press mold structure that can be easily detached from one side direction and can improve the work efficiency of mold replacement.

  In the press mold structure of the present invention, a stripper plate mounted on the lower surface of the punch plate moved up and down by the ram, and a die plate mounted on the upper surface of the lower mold backing plate fixed to the bed side The stripper plate and the die plate slide substantially horizontally in the at least one side direction with respect to the corresponding punch plate and lower die backing plate, respectively, via the slide guide means. The main feature is that it is removable.

  When exchanging the stripper plate and the die plate, the stripper plate and punch plate and the die plate and lower die backing plate are unfixed in the vertical working space of the press die, respectively, and the stripper plate and die plate are fixed to the corresponding punch. The plate and the lower die backing plate can be slid in a predetermined direction via slide guide means and taken out of the press die, and another stripper plate and die plate can be attached in reverse to the removal operation.

  According to the present invention, since the stripper plate and the die plate can be detachably attached to the punch plate and the lower mold backing plate in a horizontal direction, the outer side of the press die can be replaced when the stripper plate and the die plate are replaced. The work can be performed in a wide free space, and there is no need to move the ram up and down, so it is possible to reduce labor and shorten the mold change work, and increase the work efficiency of the mold change. Can do.

The schematic sectional drawing which shows the press metal mold | die of the flatness correction process part which concerns on one Embodiment of this invention. The top view of the lower mold | type of the press metal mold | die shown in FIG.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings by taking as an example a press die of a flatness correcting portion in a progressive press die apparatus.

    FIG. 1 is a schematic cross-sectional view of a press die of a flatness correcting portion, and FIG. 2 is a plan view of a lower die of the press die shown in FIG.

  The progressive press die apparatus according to the present embodiment is a process of drawing and punching a punched portion of a metal plate to be processed and a punched forming portion in the progressive direction of the metal plate to be rolled. Punching process part, flatness correction process part that corrects the flatness of the punched molding part, and trimming process part that separates the flatness correction processed part from the surplus part in series in this order Has been.

  Accordingly, the press die 10 of the flatness correcting portion of the present embodiment shown in FIGS. 1 and 2 is between the press die 50 of the preceding punching portion and the press die 60 of the subsequent trimming portion. It is arranged adjacent to.

  A press die 10 of the flatness correcting portion is mounted on a lower surface of a punch plate 12 mounted on a ram (not shown) and moved up and down by an upper die holder 11 common to the press die of each of the processed portions. The upper surface of the lower mold backing plate 15 on the side of the lower mold holder 14 that is attached to a bed (not shown) and is common to the press mold of each processing section. And a die plate 16 corresponding to a lower mold fastened and fixed from above by bolts 21.

  The punch plate 12 is fastened and fixed from below by bolts 22 to the lower surface of the upper die backing plate 17 fastened and fixed to the lower surface of the upper die holder 11.

  The lower mold backing plate 15 is fastened and fixed to the upper surface of the lower mold holder 14 from above by bolts 22.

  The stripper plate 13 and the die plate 16 are formed in a plane square disk shape, and a metal plate 30 to be processed that is fed forward to the press die 10 is formed on the lower surface of the stripper plate 13 and the upper surface of the die plate 16. A plurality of portions corresponding to the flat portion 31a of the formed portion 31 in the length direction of the flat portion 31a (in this embodiment, a direction orthogonal to the forward feed direction A shown in FIG. 2 of the metal plate 30 to be processed). The surface correction pressing pin 20 of the book is screwed and fixed so as to be removable.

  A plurality of types of the surface correction pressing pins 20 having different effective protrusion heights from the surface of the stripper plate 13 and the surface of the die plate 16 are aligned, and the optimal protrusion corresponds to the portion necessary for the flatness correction of the flat surface portion 31a. A pin 20 having a height is selected and screwed on the opposing surfaces of the stripper plate 13 and the die plate 16.

  The stripper plate 13 and the die plate 16 are provided with lifters 23 and 24 urged in the upward and downward protruding directions by springs (not shown), respectively. 32 is supported on the lower surface side, and the workpiece metal plate 30 is lifted to a height position where it does not catch on the surface correction pressing pin 20 of the die plate 16 so that the workpiece metal plate 30 can be fed forward smoothly. ing.

  The surface correction pressing pin 20 of the stripper plate 13 and the die plate 16 pushes down the metal plate 30 to be processed supported by the lower lifter 24 with the surface correction pressing pin 20 of the stripper plate 13 by the downward movement of the ram (not shown). The flat portion 31a of the metal plate 30 to be processed is pressed by the stripper plate 13 and the surface correction pressing pins 20 and 20 of the die plate 16 to correct the flatness. If the flatness correction point of the forming part of the metal plate 30 to be processed changes due to the press forming operation or the level of correction changes, the operation of the progressive press die apparatus is stopped and the stripper It is necessary to rearrange the surface correction pressing pins 20 on the plate 13 and / or the die plate 16 or to replace the surface correction pressing pins 20.

  Thus, the replacement or the like (including the replacement) of the surface correction pressing pin 20 must be performed conventionally in the vertical working space of the press die, and in particular on the lower lifter 24 on the die plate 16 side. Since the gap between the supported metal plate 30 and the lower surface correction pressing pin 20 is small, it is very difficult to replace the lower surface correction pressing pin 20.

  Therefore, in the present embodiment, the stripper plate 13 and the die plate 16 are respectively moved in one direction, for example, with respect to the corresponding punch plate 12 and lower mold backing plate 15 via the slide guide means 40. The machined metal plate 30 is slidable substantially horizontally to the operator side (lower side in FIG. 2) orthogonal to the forward feeding direction A so as to be detachable.

  Since the stripper plate 13 and the die plate 16 are each formed in a flat rectangular disk shape as described above, the slide guide means 40 is located on the side of the stripper plate 13 on the left and right sides of the stripper plate 13. A guide rail 40U having a substantially L-shaped cross section that holds the end portion is used, and a rectangular guide block 40L having a square cross section along the left and right end surfaces of the die plate 16 is used on the die plate 16 side. In FIG. 2, the guide rail 40U and the guide block 40L are both separated into two in the front and rear, but this may of course be an integral part of the required length.

  The guide rail 40U and the guide block 40L are fastened and fixed to the corresponding punch plate 12 and backing plate 15 by bolts 41 and cotter pins 42, respectively.

  As described above, both the stripper plate 13 and the die plate 16 can be pulled out to the front side (lower side in FIG. 2), which is the operator side of the press die 10, and therefore the stripper plate 13 and the die plate 16. Each pair of grips 43 is screwed and fixed to the end surface on the front side.

  On the other hand, the stripper plate 13 and the die plate 16 slide on the rear surface of the punch plate 12 (upper side in FIG. 2) and on the rear surface of the lower mold backing plate 15 (upper side in FIG. 2). Positioning stoppers 44U and 44L for restricting are provided.

  Each of the positioning stoppers 44U and 44L is a rectangular block having a square cross section, and is fastened and fixed to the punch plate 12 and the lower mold backing plate 15 by a bolt 45 and a cotter pin 46.

  Here, in the present embodiment, as described above, the flatness correction of the flat portion 31a of the molded portion 31 of the workpiece metal plate 30 is performed on a plurality of the plurality of strips that are implanted on the opposing surfaces of the stripper plate 13 and the die plate 16. The surface correction pressing pins 20 are pressed to correct deformations such as warping and bending of the flat surface portion 31a. These surface correction pressing pins 20 correspond to the correction points and correction degrees of the flat surface portion 31a. It is rearranged or exchanged as appropriate.

  Therefore, a relatively shallow groove portion 26 is formed on the lower surface of the stripper plate 13 and the upper surface of the die plate 16 so as to match the contour of the projection plane of the formed portion 31 of the metal plate 30 to be processed. The position of the required correction and the position of the correction are adjusted by using the outline shape of the groove 26 as a guide so that it is easy to specify the position of the pin to be rearranged and the position of the pin to be replaced.

  In the press die structure of the present embodiment having the above-described configuration, drawing and punching are performed by the press die 50 in the punching portion, and the press die 10 in the flatness correction portion is shown in FIG. The workpiece metal plate 30 that is sequentially fed in the direction indicated by the arrow A in FIG. 2 inevitably undergoes slight warping and bending deformation in the flat portion 31a of the molded portion 31 by the drawing and punching. .

  The occurrence portion and the degree of deformation of the flat portion 31a and the degree of deformation thereof are scrutinized at the trial stage of press molding, and the flat portion of the stripper plate 13 and the die plate 16 of the press die 10 according to the scrutiny result. The surface correction pressing pin 20 is screwed and fixed in advance at an appropriate position corresponding to the correction required portion 31a.

  Thereby, as described above, when the forming portion 31 is press-formed by the drawing and punching processing by the press die 50 of the punching processing portion, and the metal plate 30 to be processed is forwarded to the flatness correction processing portion, The flat portion 31a of the molding portion 31 receives the pressing force of the surface correction pressing pins 20 of the stripper plate 13 and the die plate 16 by the press die 10, and the flatness is appropriately corrected.

  When the flatness correction of the flat portion 31 a of the forming portion 31 is completed and the metal plate 30 to be processed is sequentially fed to the subsequent trimming portion, the forming portion 31 of the metal plate 30 to be processed is pressed by the press die 60. It is separated from the surplus part 32 and taken out of the press die 60.

  Here, the flat portion 31a of the forming portion 31 of the metal plate 30 to be processed, which is punched by the press die 50 of the preceding punching processing portion by the press die 10 of the flatness correction processing portion, and is sequentially fed. When the flatness correction is continuously performed, if the surface correction pressing pin 20 is worn, a slight change in the degree of warping of the flat surface portion 31a or a slight displacement of the bending deformation position occurs, the surface correction pressing pin 20 is corrected. It is necessary to replace or rearrange.

  When such a surface correction pressing pin 20 needs to be replaced or rearranged, conventionally, in the stripper plate 13 as described above, the operator looks into the vertical working space of the press die 10. Then, by inserting a hand and unscrewing and removing the surface correction pressing pin 20 on the lower surface of the stripper plate 13 from below, it can be replaced with another appropriate surface correction pressing pin 20 or the surface correction pressing pin 20 can be replaced properly. In the die plate 16, the surface correction pressing pins 20 on the upper surface of the die plate 16 are similarly replaced or rearranged from above in the vertical work space.

  However, in this progressive press method, the metal plate 30 to be processed is present in a band shape in the forward direction in the vertical working space of the press die in each step from the initial step to the final step. Even in the portion 10, the metal plate 30 to be processed is supported by a lifter 24 on the die plate 16 side and held at a height position near the die plate 16 as shown in FIG. 1.

  For this reason, even in the vertical work space in the press die 10, the gap between the surface correction pressing pin 20 on the stripper plate 13 side and the metal plate 30 to be processed is secured somewhat wide, but the surface on the die plate 16 side. The gap between the correction pressing pin 20 and the metal plate 30 to be processed is very narrow, and in particular, it is extremely difficult to replace and rearrange the surface correction pressing pin 20 on the die plate 16 side.

  On the other hand, in the present embodiment as described above, the stripper plate 13 and the die plate 16 are slid substantially horizontally toward the front side of the press die 10 with respect to the punch plate 12 and the lower mold backing plate 15, respectively. Since it can be attached and detached, when replacing the stripper plate 13 and the die plate 16, it is possible to work in a wide free space outside the press die 10, and there is no need to move up and down the ram which is not shown in the figure. Reduction and shortening of exchange work can be realized, and the work efficiency of mold exchange can be improved.

  Specifically, in the stripper plate 13, when the surface correction pressing pin 20 is exchanged or rearranged, the bolt 21 is removed to release the connection between the stripper plate 13 and the punch plate 12. 13 is slidable substantially horizontally to the front side with respect to the punch plate 12 by the guide rail 40U. In the die plate 16, the bolt 21 is removed and the coupling between the die plate 16 and the lower backing plate 15 is released. For example, the die plate 16 can be slid substantially horizontally to the front side with respect to the lower mold backing plate 15 by the guide block 40L.

  Accordingly, the stripper plate 13 is gripped by the handle 43 on the front end face thereof and pulled out substantially horizontally on the front side of the press die 10, and the handle 43 on the front end face of the die plate 16 is also gripped. The surface correction pressing pins 20 can be easily replaced or rearranged in a wide free space outside the pressing mold 10 by being drawn out substantially horizontally toward the front side of the pressing mold 10.

  When the stripper plate 13 and the die plate 16 are assembled, the above-described operation may be reversed. At this time, the stripper plate 13 and the die plate 16 are moved along the guide rail 40U and the guide block 40L in the press die 10. , Each rear end face comes into contact with the stoppers 44U and 44L and positioning is performed properly, so that the bolt 21 can be easily fastened to the punch plate 12 and the lower mold backing plate 15. .

  Here, particularly in this embodiment, a groove portion 26 is formed on the lower surface of the stripper plate 13 and the upper surface of the die plate 16 so as to match the contour of the projection plane of the formed portion 31 of the metal plate 30 to be processed. Therefore, when exchanging and rearranging the surface correction pressing pin 20, the contour shape of the groove portion 26 is set to the correction required portion of the flat portion 31 a and the adjustment degree of the correction degree in the molded portion 31 of the metal plate 30 to be processed. As a guide, it becomes easy to specify the position of the pin to be rearranged and the position of the pin to be replaced. Therefore, the workability of replacing or rearranging the surface correction pressing pin 20 can be further improved.

  In the above-described embodiment, the flatness correction of the formed portion 31 of the metal plate 30 to be processed is performed by the plurality of surface correction pressing pins 20 provided detachably on the stripper plate 13 and the die plate 16. However, the present invention is not limited to this, and flatness correction with a trowel piece member may be performed.

  Moreover, although the said embodiment disclosed the example which applied this invention to the press die 10 of the flatness correction processing part in a progressive press die apparatus, the press die of the other process part in a progressive press die apparatus is shown. Needless to say, the present invention can be applied to a normal single press die.

DESCRIPTION OF SYMBOLS 10 Press die 11 Upper mold holder 12 Punch plate 13 Stripper plate 14 Lower mold holder 15 Lower mold backing plate 16 Die plate 17 Upper mold backing plate 20 Surface correction pressing pin 26 Groove part 30 Workpiece metal plate 31 Molding part 31a Plane part 32 Surplus part 40 Slide guide means

Claims (3)

A press die comprising a stripper plate mounted on the lower surface of the punch plate moved up and down by the ram, and a die plate mounted on the upper surface of the lower mold backing plate fixed to the bed side,
The stripper plate and the die plate can be attached to and detached from the corresponding punch plate and lower mold backing plate by sliding substantially horizontally in at least one side direction through slide guide means, respectively. Press mold structure. The press mold corrects the flatness of the punched portion of the punched portion, the punched portion of the punched portion, the punched portion of the punched portion, and the punched portion. A flatness correction processing section, and a flattening correction processing section press mold in a progressive press mold apparatus in which a flattening correction processing section and a trimming processing section that separates a molded portion subjected to flatness correction processing from a surplus portion ,
The stripper plate and the die plate of the press mold are slidable substantially horizontally forward or backward perpendicular to the progressive direction of the metal plate to be processed, and can be attached and detached. The press mold structure as described.   On the lower surface of the stripper plate and the upper surface of the die plate, a plurality of surface correction pressing pins that press the flat portion in the vertical direction are attached in a vertical direction at positions corresponding to the flat portion of the molding portion of the metal plate to be processed. The strips are arranged in a row, and grooves are formed on the lower surface of the stripper plate and the upper surface of the die plate so as to match the contour of the projection plane of the molded portion of the metal plate to be processed. Item 3. A press die structure according to Item 2.

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