JP7041388B2 - Press processing equipment - Google Patents

Description

The present invention relates to a press working apparatus that presses a work to form a workpiece and cuts the workpiece.

Conventionally, a press processing apparatus has been known in which a work made of a steel material is press-processed with a die to form an object to be molded, for example, a vehicle body part of a vehicle.

In addition, the press working device is pulled by heating the work to about 750 ° C to 1000 ° C and pressing it in a softened state, and at the same time quenching by the cooling effect associated with contact with the die. Hot pressing (also called hot stamping or hot pressing) is known to improve strength and dimensional accuracy of parts.

In such hot press working, since the workpiece is hardened by quenching, it is difficult to cut (trim) the excess part of the workpiece, and after molding, it is cut by laser processing or the like. There is a problem that it is indispensable and the manufacturing time is long and the cost is high.

For this reason, a press processing apparatus that performs trim processing at the same time as molding by press processing is known (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-079012

However, as in Patent Document 1, when a frame-shaped guide portion is provided on the cutting blade and the guide portion is inserted into the positioning hole of the lower mold for positioning, the cutting blade is replaced due to wear, so the cutting blade is replaced. There is a problem that the guide part needs to be replaced every time, which is complicated.

Further, if the guide portion is replaced every time the cutting blade is replaced, an error is likely to occur in the position of the guide portion with respect to the cutting blade, the position of the cutting blade is displaced with respect to the object to be molded, and the cutting accuracy such as the displacement of the cutting position is improved. There is the problem of a drop.

When the cutting blade is provided with a guide portion, the position of the guide portion with respect to the upper die holder (slider) is both the misalignment of the guide portion with respect to the upper die holder (slider) of the cutting blade and the misalignment of the guide portion with respect to the cutting blade. As a result, the position accuracy of the guide portion is lower than that of the upper mold holder, and there is a possibility that the guide portion cannot be inserted into the positioning hole and problems such as cutting position deviation may occur.

It should be noted that such a problem is not limited to the hot pressing apparatus that performs hot pressing, and also exists in the pressing apparatus that presses without heating the work.

In view of such circumstances, it is an object of the present invention to provide a press working apparatus having improved cutting accuracy.

An aspect of the present invention for solving the above problems includes an upper mold holder to which an upper molding blade is fixed and a lower mold holder to which a lower molding blade corresponding to the upper molding blade is fixed. And the lower mold holder are provided so as to be relatively movable so as to change the distance between the upper forming blade and the lower forming blade, and press the work between the upper forming blade and the lower forming blade. It is a press processing device that is processed to form an object to be molded, and the upper die holder is provided with a cutting blade provided so as to be movable in a relative moving direction with respect to the upper die holder, and the cutting blade is provided. Guided by a guide means for restricting movement in a direction orthogonal to the relative movement direction with respect to the upper mold holder, the lower mold holder is provided with a guide pin protruding toward the cutting blade, and the cutting is performed. The blade is provided with a guide hole into which the guide pin is inserted.

In such an embodiment, it is not necessary to position the guide pin with respect to the cutting blade every time the cutting blade is replaced, and the positioning accuracy of the cutting blade can be improved and the cutting position accuracy can be improved. In addition, since the guide pin is provided on the lower mold holder, the guide pin is not affected by the misalignment of the cutting blade with respect to the upper mold holder, and the guide pin can always be placed in the same position. The accuracy can be improved.

Here, the guide means includes an upper mold guide pin provided on the cutting blade and protruding toward the upper mold holder in the relative moving direction, and an upper mold guide pin provided on the upper mold holder. It is preferable to have a guide hole for the upper mold to be inserted. According to this, the guide pin for the upper mold is suppressed from protruding toward the lower mold holder side from the cutting blade, and the guide pin for the upper mold does not interfere when taking out the object to be molded, and the object to be molded is not obstructed. It can be taken out easily and in a short time.

Further, at the bottom dead center in the relative movement of the upper mold holder to the lower mold holder, the object to be molded is formed between the upper molding blade and the lower molding blade, and the guide pin is the bottom dead center. It is preferable to have a length to be inserted into the guide hole before. According to this, when the object to be molded is cut by the cutting blade, the cutting blade can be positioned with high accuracy with respect to the guide pin.

Further, it is preferable that the guide pin is arranged at a position corresponding to each of the pair of diagonal corner portions of the cutting blade. According to this, the two guide pins can be provided at distant positions, the cutting blade can be positioned with respect to the guide pin with high accuracy, and the cutting blade can be positioned in the inclined direction with respect to the axial direction of the guide pin. It can be done with high accuracy.

Further, at the position where the object to be molded is cut by the cutting blade, the guide pin preferably has a length protruding from the side opposite to the lower mold holder of the cutting blade. According to this, it is possible to increase the area where the guide pin and the guide hole face each other when cutting the object to be molded, and improve the positioning accuracy between the guide pin and the guide hole.

Further, it is preferable that at least the side surface of the cutting blade on the side of the upper forming blade is provided with a side plate for positioning the cutting blade and the upper forming blade or the upper die holder. By providing the side plate in this way, the positioning accuracy between the cutting blade and the upper forming blade or the upper mold holder can be improved, and the positioning accuracy of the cutting blade can be improved.

According to the press working apparatus of the present invention, the position accuracy of the cutting blade with respect to the object to be molded can be improved to improve the cutting position accuracy.

It is sectional drawing of the press working apparatus which concerns on Embodiment 1 of this invention. It is a perspective view of the cutting blade which concerns on Embodiment 1 of this invention. It is sectional drawing explaining the operation of the press working apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing explaining the operation of the press working apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing explaining the operation of the press working apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing explaining the operation of the press working apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing explaining the operation of the press working apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing explaining the operation of the press working apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing explaining the operation of the press working apparatus which concerns on Embodiment 2 of this invention.

Hereinafter, the present invention will be described in detail based on the embodiments.
(Embodiment 1)
FIG. 1 is a cross-sectional view of the press working apparatus according to the first embodiment of the present invention, and FIG. 2 is a perspective view of a cutting blade.
As shown in FIG. 1, the press working apparatus 1 includes an upper die holder 10 and a lower die holder 20.
The upper mold holder 10 and the lower mold holder 20 are provided so as to be able to move relative to each other in the directions of proximity and separation. In the present embodiment, the relative moving direction between the upper die holder 10 and the lower die holder 20 is referred to as the Z direction. Further, in the present embodiment, the upper die holder 10 is provided so as to be movable in the Z direction with respect to the lower die holder 20 by a drive means such as a hydraulic cylinder or a drive motor (not shown). Of course, the lower mold holder 20 may be provided so as to be movable in the Z direction with respect to the upper mold holder 10.

An upper molding blade 11 which is an upper mold is fixed to the upper mold holder 10 on the surface on the lower mold holder 20 side.
Further, a cutting blade 12 is provided on the surface of the upper die holder 10 on the lower die holder 20 side so as to be movable in the Z direction. In the present embodiment, the cutting blade 12 is guided in the Z direction by the guiding means and can move.

The guide means of the present embodiment includes an upper mold guide pin 13 and an upper mold guide hole 14.
The upper mold guide pin 13 is provided so that the base end portion is fixed to the cutting blade 12 and the tip thereof projects toward the upper mold holder 10 in the Z direction.

The upper mold guide hole 14 is provided so as to penetrate the upper mold holder 10 in the Z direction, and has an inner diameter slightly larger than the outer diameter of the upper mold guide pin 13. Although not particularly shown, the upper mold guide hole 14 is provided in the guide bush fixed to the upper mold holder 10.

In such a guide means, by inserting the upper die guide pin 13 into the upper die guide hole 14, the upper die holder 10 is cut along the Z direction which is the axial direction of the upper die guide pin 13. The blade 12 can be guided and moved.

In the present embodiment, as the guide means, the upper die guide pin 13 is provided on the cutting blade 12, and the upper die guide hole 14 is provided on the upper die holder 10. However, the present invention is not particularly limited to this, and the guide is provided. As a means, the upper die guide hole 14 may be provided in the cutting blade 12, and the upper die guide pin 13 may be provided in the upper die holder 10. However, when the upper mold guide pin 13 is provided on the upper mold holder 10, the length of the upper mold guide pin 13 protruding from the lower mold holder 20 side of the cutting blade 12 is required, and the molded and trimmed cover is processed. When taking out the molded object, the upper die guide pin 13 becomes an obstacle, making it difficult to take out the object to be molded, and the upper die holder is located at a position where the upper die guide pin 13 provided on the upper die holder 10 is avoided. 10 has to be moved, and it takes time to take out the object to be molded.

In the present embodiment, since the upper mold guide pin 13 is provided on the cutting blade 12, the upper mold guide pin 13 is suppressed from protruding toward the lower mold holder 20 from the cutting blade 12, and the object to be molded is formed. The upper mold guide pin 13 does not interfere with the removal of the molded object, and the workpiece can be easily ejected, and the molded object can be removed in a short time without extra movement of the upper mold holder 10. Can be done with.

Further, in the present embodiment, the upper mold guide pin 13 and the upper mold guide hole 14 into which the upper mold guide pin 13 is inserted are provided as the guide means, but the guide means is provided in the upper mold holder 10. On the other hand, if the movement of the cutting blade 12 in the Z direction can be guided, the present invention is not particularly limited, and for example, the rail is fixed to the upper mold holder 10 and the cutting blade 12 is slid along the rail. May be good. That is, although the guide means will be described in detail later, it suffices if the lower mold guide hole 17 of the cutting blade 12 can be guided to the extent that it can be inserted into the lower mold guide pin 22 provided in the lower mold holder 20.

Further, the movement of the cutting blade 12 with respect to the upper mold holder 10 in the Z direction is performed by the driving means 15. The drive means 15 of the present embodiment is composed of a hydraulic cylinder, and includes a main body 15a fixed to the side opposite to the cutting blade 12 of the upper die holder 10 and a rod 15b that can be extended and shortened with respect to the main body 15a. do. The tip of the rod 15b of the driving means 15 is fixed to the cutting blade 12 through the through hole 16 provided in the upper mold holder 10, and the rod 15b is fixed to the main body 15a fixed to the upper mold holder 10. By extending and shortening, the cutting blade 12 is moved in the Z direction with respect to the upper mold holder 10.

In the present embodiment, the driving means 15 of the hydraulic cylinder is provided, but the driving means 15 is not particularly limited as long as the cutting blade 12 can be moved in the Z direction, and the driving means 15 is, for example, a drive motor or an electromagnet. And so on.

On the other hand, the lower mold holder 20, which is a lower mold facing the upper mold 11 in the Z direction, is fixed to the lower mold holder 20. The workpiece placed on the lower forming blade 21 of the lower die holder 20 is pressed between the upper forming blade 11 of the upper die holder 10 to form an object to be molded.

Further, the lower mold holder 20 is provided with a lower mold guide pin 22 which is a guide pin provided so as to project toward the cutting blade 12 along the Z direction. The lower mold guide pin 22 has a base end portion fixed to the lower mold holder 20 so that the axial direction is the Z direction, and the tip thereof is provided so as to project toward the cutting blade 12.

On the other hand, the cutting blade 12 is provided with a lower mold guide hole 17 which is a guide hole into which the lower mold guide pin 22 is inserted. The lower mold guide hole 17 is provided so as to penetrate the cutting blade 12 in the Z direction. Further, the lower mold guide hole 17 has an inner diameter slightly larger than the outer diameter of the lower mold guide pin 22. Although not particularly shown, the lower mold guide hole 17 is provided in the guide bush fixed to the cutting blade 12.

Here, the clearance (d ₁ ) between the lower mold guide hole 17 and the lower mold guide pin 22 is less than or equal to the clearance (d ₂ ) between the upper mold guide pin 13 and the upper mold guide hole 14. Preferred (d ₁ ≤ d ₂ ). As a result, the positioning accuracy of the lower mold guide pin 22 and the lower mold guide hole 17 is improved, and the cutting blade 12 is positioned with high accuracy with respect to the lower molding blade 21 fixed to the lower mold holder 20. Can be done. Further, the upper die holder 10 and the cutting blade 12 can be moved while the upper die guide pin 13 is inserted into the upper die guide hole 14 and the lower die guide pin 22 is inserted into the lower die guide hole 17. It can be suppressed from being regulated.

Such lower mold guide pins 22 are provided at positions corresponding to a pair of diagonal corners of the cutting blade 12. Here, the fact that the lower mold guide pin 22 is provided at a position corresponding to the pair of diagonal corners of the cutting blade 12 means that the lower guide pin 22 is provided on each of the pair of diagonal corners of the cutting blade 12. It means that the mold guide hole 17 is provided and the lower mold guide pin 22 is arranged at a position where the lower mold guide hole 17 is inserted.

Further, the fact that the lower mold guide holes 17 are provided in each of the pair of diagonal corners of the cutting blade 12 is that when the cutting blade 12 is viewed in a plan view from the Z direction, as shown in FIG. In the case of a shape having four corners such as a rectangular shape, the cutting blade 12 has two pairs of diagonals, that is, two pairs of corners facing each other. Of these two pairs of diagonal corners, the lower mold guide hole 17 may be provided in the pair of corners.

By the way, when the cutting blade 12 is viewed in a plan view from the Z direction, in the case of a shape other than the shape having four corners, for example, a triangular shape or a pentagonal shape or more, the position at the farthest distance in the plan view. The lower mold guide hole 17 may be provided in the lower mold guide hole 17, and the lower mold guide pin 22 may be provided at a position corresponding to the lower mold guide hole 17.

In this way, by providing the lower mold guide pin 22 at a position corresponding to a pair of diagonal corners of the cutting blade 12 or a position corresponding to the farthest position, the lower mold of the cutting blade 12 can be used. Positioning in the direction orthogonal to the Z direction with respect to the guide pin 22 can be performed with high accuracy, and positioning of the cutting blade 12 in the tilt direction with respect to the Z direction which is the axial direction of the guide pin 22 for the lower die can be performed with high accuracy. be able to.

Further, in the present embodiment, the upper mold guide pin 13 is provided at each of a pair of corner portions different from the diagonal pair of corner portions provided with the lower mold guide hole 17 of the cutting blade 12. There is. That is, of the two pairs of diagonal corners, one pair of corners is provided with a lower mold guide hole 17, and the other pair of corners is provided with an upper mold guide pin 13. Has been done.

By providing the upper mold guide pin 13 at the pair of diagonal corners of the cutting blade 12 in this way, positioning in the direction orthogonal to the Z direction with respect to the upper mold holder 10 of the cutting blade 12 is performed with high accuracy. In addition, the cutting blade 12 can be positioned in the inclined direction with high accuracy with respect to the Z direction, which is the axial direction of the upper mold guide pin 13. When the cutting blade 12 is viewed in a plan view from the Z direction, if the shape other than the shape having four corners, for example, a triangular shape or a pentagonal shape or more, the upper mold guide pin 13 is a lower mold. Similar to the guide pin 22, the guide pin 22 may be provided at the position farthest in the plan view. By the way, the distance between the two lower mold guide holes 17 (lower mold guide pin 22) and the distance between the two upper mold guide pins 13 are preferably the farthest distances, but the same distance. If not, the distance (L ₁ ) between the two lower mold guide holes 17 is preferably larger than the distance (L ₂ ) between the two upper mold guide pins 13 (L ₁ ≧). L ₂ ). This will be described in detail later, but since the position where the cutting blade 12 cuts the object to be molded is determined by the positioning of the lower mold guide hole 17 and the lower mold guide pin 22, the lower mold guide hole 17 and the lower This is because the cutting position accuracy can be improved by improving the positioning accuracy with the mold guide pin 22.

Such an operation of the press working apparatus 1, that is, a method of manufacturing an object to be molded using the press working apparatus 1 will be described with reference to FIGS. 3 to 8. 3 to 7 are cross-sectional views for explaining the operation of the press working apparatus according to the first embodiment of the present invention, and FIG. 8 is a cross-sectional view for explaining the operation of the press working apparatus for comparison.

First, as shown in FIG. 3, a work 100, which is a steel material heated to, for example, 750 ° C. to 1000 ° C., is placed on the lower forming blade 21.

At this time, at the top dead center of the upper die holder 10, the lower die guide pin 22 of the lower die holder 20 preferably has a length that is not inserted into the lower die guide hole 17 of the cutting blade 12. .. As a result, when the object to be formed formed by molding the work 100 is taken out from the lower forming blade 21, the lower die guide pin 22 can be prevented from interfering with the upper dead center of the upper die holder 10. can. Further, by shortening the length of the lower mold guide pin 22 in the Z direction as much as possible, distortion of the lower mold guide pin 22 can be suppressed and the accuracy can be improved.

Next, as shown in FIG. 4, the lower mold guide pin 22 is inserted into the lower mold guide hole 17 of the cutting blade 12 by moving the upper mold holder 10 toward the lower mold holder 20 in the Z direction. .. Here, the length of the lower mold guide pin 22 is before reaching the lower dead center when the work 100 is formed between the upper forming blade 11 and the lower forming blade 21 at the lower dead center of the upper mold holder 10. The length is preferably such that it is inserted into the lower mold guide hole 17 of the cutting blade 12. As a result, when the workpiece 101 on which the work 100 is molded in a later step is cut (trimmed) by the cutting blade 12, the cutting blade 12 can be reliably positioned with respect to the lower mold guide pin 22. ..

Next, as shown in FIG. 5, the upper die holder 10 is further moved toward the lower die holder 20 in the Z direction (bottom dead center). As a result, the work 100 is press-molded between the lower forming blade 21 and the upper forming blade 11 to form the workpiece 101.

Next, as shown in FIG. 6, the cutting blade 12 is moved toward the lower mold holder 20 in the Z direction with respect to the upper mold holder 10. As a result, the cutting blade 12 cuts (trims) the workpiece 101. At this time, since the cutting blade 12 is guided and positioned by the lower mold guide pin 22 provided in the lower mold holder 20, the cutting blade 12 is positioned with respect to the lower molding blade 21 to which the object to be molded 101 is fixed. It is possible to improve the accuracy of the cutting position of the object to be molded 101 by positioning the position of the blade with high accuracy.

Further, at the position where the cutting blade 12 cuts the object 101, the lower mold guide pin 22 preferably has a length protruding from the side opposite to the lower mold holder 20 of the cutting blade 12. Here, when the lower mold guide pin 22 protrudes from the side opposite to the lower mold holder 20 of the cutting blade 12, the lower mold guide pin 22 inserts the lower mold guide hole 17 of the cutting blade 12 and inserts the lower mold guide pin 22. The tip thereof is in a state of protruding from the surface of the cutting blade 12 facing the upper mold holder 10. In the present embodiment, as shown in FIG. 5, at the bottom dead center of the upper die holder 10, the lower die guide pin 22 protrudes from the surface of the cutting blade 12 facing the upper die holder 10. Further, the lower mold guide pin 22 may protrude from the surface of the cutting blade 12 facing the upper mold holder 10 at the position where the cutting blade 12 cuts the object 101, and is the bottom dead center of the upper mold holder 10. The lower mold guide pin 22 does not have to protrude from the surface of the cutting blade 12 facing the upper mold holder 10.

In this way, the lower mold guide pin 22 is set to have a length that protrudes from the surface of the cutting blade 12 facing the upper mold holder 10 at the position where the cutting blade 12 cuts the object 101, so that the lower mold can be used in the Z direction. The area where the guide pin 22 and the lower mold guide hole 17 face each other can be increased, and the positioning accuracy between the lower mold guide pin 22 and the lower mold guide hole 17 can be improved. Therefore, the positioning accuracy of the cutting blade 12 can be improved.

Further, in the present embodiment, immediately after the heated work 100 is formed between the upper forming blade 11 and the lower forming blade 21, the formed object 101 is placed between the upper forming blade 11 and the lower forming blade 21. Since the excess portion of the object to be molded 101 can be cut with high accuracy by the cutting blade 12 before being quenched without taking it out, the object to be quenched and hardened after molding can be cut into a separate process. It is not necessary to process by laser processing or the like, and the manufacturing time can be shortened and the cost can be reduced.

Next, as shown in FIG. 7, the upper die holder 10 is moved in the Z direction so as to be separated from the lower die holder 20, and the trimmed object 101 on the lower forming blade 21 is taken out by an arm or the like. At this time, in the present embodiment, since the lower mold guide pin 22 is provided in the lower mold holder 20, the object to be molded 101 is taken out as compared with the case where the lower mold guide pin 22 is provided in the cutting blade 12. Therefore, the height h ₁ from the lower mold holder 20 of the upper mold holder 10 can be shortened.

Incidentally, as shown in FIG. 8, when the lower mold guide pin 22 is provided on the cutting blade 12, the cutting blade 12 is held on the upper side in order to take out the trimmed object 101 from the lower forming blade 21. It is necessary to move the mold holder 10 to a height h ₂ where the lower mold guide pin 22 does not get in the way. Here, in order to take out the trimmed object 101 to be formed from the lower forming blade 21, it is necessary to lift the object to be formed 101 from above the lower forming blade 21 toward the upper mold holder 10 side by an arm or the like. Therefore, a space for inserting the arm from the horizontal direction is required on the upper side (upper mold holder 10 side) of the object to be molded 101. Therefore, as shown in FIG. 8, when the lower mold guide pin 22 is provided on the cutting blade 12, the cutting blade 12 is held on the upper side in order to take out the trimmed object 101 from the lower forming blade 21. It is necessary to move the mold holder 10 to a relatively _high height h2 where the lower mold guide pin 22 does not get in the way. On the other hand, in the present embodiment, as shown in FIG. 7, since the lower mold holder 20 is provided with the lower mold guide pin 22, the cutting blade 12 is held in order to take out the object to be molded 101. Since the upper mold holder 10 may be moved to a height h ₁ where the cutting blade 12 does not get in the way, that is, a position where the cutting blade 12 does not overlap the workpiece 101 in the Z direction, the upper mold holder shown in FIG. The height h ₁ of the upper mold holder 10 can be made lower than the height h ₂ of 10 (h ₁ <h ₂ ).

By lowering the height h ₁ of the upper mold holder 10 with respect to the lower mold holder 20 when taking out the object to be molded 101 in this way, the moving distance of the upper mold holder 10 after molding can be shortened, so that trimming can be performed. The time for taking out the processed object 101 after processing can be shortened, and the cost can be reduced.

As described above, the press processing apparatus 1 of the present embodiment includes an upper die holder 10 to which the upper forming blade 11 is fixed and a lower die holder 20 to which the lower forming blade 21 corresponding to the upper forming blade 11 is fixed. , And the upper mold holder 10 and the lower mold holder 20 are provided so as to be relatively movable so as to change the distance between the upper forming blade 11 and the lower forming blade 21, and the upper forming blade 11 and the lower forming blade 21 are provided. A press processing device 1 for forming a workpiece 101 by pressing a work 100 with a blade 21, and the upper mold holder 10 is in the Z direction, which is a relative movement direction with respect to the upper mold holder 10. A cutting blade 12 is provided so as to be movable, and the cutting blade 12 is guided by a guide means for restricting movement in a direction orthogonal to the Z direction with respect to the upper mold holder 10, and the lower mold holder 20 is guided by a guide means. A lower mold guide pin 22 which is a guide pin protruding toward the cutting blade 12 is provided, and the cutting blade 12 is provided with a lower mold guide hole 17 which is a guide hole into which the lower mold guide pin 22 is inserted. Has been done.

In this way, the lower mold holder 20 is provided with the lower mold guide pin 22, and the cutting blade 12 is provided with the lower mold guide hole 17 into which the lower mold guide pin 22 is inserted. It is possible to suppress the misalignment of the lower mold guide pin 22 with respect to the cutting blade 12 each time it is replaced, and it is possible to improve the positioning accuracy of the cutting blade 12 and improve the accuracy of the cutting position. By the way, when the lower mold guide pin 22 is fixed to the cutting blade 12, an error is likely to occur in the position of the lower mold guide pin 22 with respect to the cutting blade 12 every time the cutting blade 12 is replaced due to wear. The misalignment of 12 is likely to occur.

Further, since the lower mold guide pin 22 is provided on the lower mold holder 20, the lower mold guide pin 22 is not affected by the misalignment of the cutting blade 12 with respect to the upper mold holder 10. 22 can always be placed in the same position. Therefore, the positioning of the cutting blade 12 with respect to the lower mold guide pin 22 is suppressed by suppressing the occurrence of problems such as the lower mold guide pin 22 being unable to be inserted into the lower mold guide hole 17 due to the misalignment of the lower mold guide pin 22. The accuracy can be improved and the cutting position accuracy can be improved.

Further, in the press working apparatus 1 of the present embodiment, the guide means are the upper mold guide pin 13 provided on the cutting blade 12 and projecting toward the upper mold holder 10 in the Z direction which is the relative movement direction, and the upper mold. It is preferable to have an upper mold guide hole 14 provided in the holder 10 into which the upper mold guide pin 13 is inserted.

By providing the upper mold guide pin 13 on the cutting blade 12 as a guide means for positioning the cutting blade 12 with respect to the upper mold holder 10, the upper mold guide pin 13 is a lower mold holder than the cutting blade 12. The upper mold holder 10 can be easily taken out without the upper mold guide pin 13 interfering with the mold to be taken out by suppressing the protrusion to the 20 side. The object to be molded 101 can be taken out in a short time without extra movement.

Further, in the press working apparatus 1 of the present embodiment, the object to be molded is formed between the upper forming blade 11 and the lower forming blade 21 at the bottom dead center in the Z direction, which is the relative movement of the upper die holder 10 to the lower die holder 20. It is preferable that the guide pin 22 for the lower mold, which is the guide pin, has a length to be inserted into the guide hole 17 for the lower mold, which is the guide hole, before the bottom dead center.

By inserting the lower mold guide pin 22 into the lower mold guide hole 17 at the bottom dead center in this way, when the molded object 101 is cut (trimmed) by the cutting blade 12, the cutting blade 12 is cut. It can be positioned with high accuracy with respect to the lower mold guide pin 22.

At the bottom dead center of the upper die holder 10, the lower die guide pin 22 may not be inserted into the lower die guide hole 17 of the cutting blade 12, but the cutting blade 12 cuts the object to be molded 101. The lower mold guide pin 22 needs to be inserted into the lower mold guide hole 17.

Further, in the press working apparatus 1 of the present embodiment, it is preferable that the lower mold guide pin 22 which is a guide pin is arranged at a position corresponding to each of the pair of diagonal corner portions of the cutting blade 12. ..

By providing the lower mold guide pin 22 at a position corresponding to each of the pair of diagonal corner portions of the cutting blade 12, the direction orthogonal to the Z direction of the lower mold guide pin 22 of the cutting blade 12 Can be positioned with high accuracy, and the cutting blade 12 can be positioned with high accuracy in the Z direction, which is the axial direction of the lower mold guide pin 22. The position where the lower mold guide pin 22 is provided is not particularly limited to this.

Further, in the press working apparatus 1 of the present embodiment, at the position where the workpiece 101 is cut by the cutting blade 12, the lower mold guide pin 22 which is a guide pin is opposite to the lower mold holder 20 of the cutting blade 12. It is preferable to have a length protruding from the side.

In this way, the lower mold guide pin 22 is set to have a length that protrudes from the surface of the cutting blade 12 facing the upper mold holder 10 at the position where the cutting blade 12 cuts the workpiece 101, so that the lower mold can be used in the Z direction. The area where the guide pin 22 and the lower mold guide hole 17 face each other can be increased to improve the positioning accuracy between the lower mold guide pin 22 and the lower mold guide hole 17, and the positioning accuracy of the cutting blade 12 can be improved. Can be improved.

When the cutting blade 12 cuts the object 101 to be molded, the lower mold guide pin 22 may have a length that does not protrude from the side opposite to the lower mold holder 20 of the cutting blade 12. However, if the lower mold guide pin 22 is provided with a length that does not protrude from the side opposite to the lower mold holder 20 of the cutting blade 12, the lower mold guide pin 22 and the lower mold guide pin 22 are provided in the Z direction. The area facing the guide hole 17 is reduced, and the positioning accuracy of the cutting blade 12 is lowered.

(Embodiment 2)
FIG. 9 is a cross-sectional view of the press working apparatus according to the second embodiment of the present invention. The same members as those in the above-described embodiment are designated by the same reference numerals, and duplicate description will be omitted.

As shown in FIG. 9, the press working apparatus 1 of the present embodiment includes a cutting blade 12, and the cutting blade 12 is provided with a side plate 18 between the cutting blade 12 and the upper forming blade 11. Further, in the present embodiment, the cutting blade 12 is also provided with a side plate 18 between the cutting blade 12 and the frame portion 19 of the upper mold holder 10.

In the press working apparatus 1 of the present embodiment, a side plate 18 for positioning the cutting blade 12 and the upper forming blade 11 or the upper die holder 10 is provided on at least the side surface of the cutting blade 12 on the upper forming blade 11 side. ing. By providing the side plate 18 between the cutting blade 12 and at least the upper forming blade 11 in this way, the positioning accuracy between the cutting blade 12 and the upper forming blade 11 or the upper die holder 10 can be improved, and the cutting blade can be improved. The positioning accuracy of 12 can be improved.

(Other embodiments)
Although each embodiment of the present invention has been described above, the basic configuration of the present invention is not limited to the above.

For example, in each of the above-described embodiments, the press processing apparatus 1 has an upper die holder 10 and a lower die holder 20, the upper die holder 10 is located vertically upward, and the lower die holder 20 is vertically downward. Although they are arranged so as to be positioned, the vertical direction of the upper mold holder 10 and the lower mold holder 20 does not have to coincide with the vertical direction. That is, the upper die holder 10 may be arranged vertically downward, and the lower die holder 20 may be arranged vertically upward.

Further, in each of the above-described embodiments, the heated work 100 is press-processed between the upper forming blade 11 and the lower forming blade 21 to form the workpiece, but the present invention is not particularly limited to this, and the work 100 at room temperature is used. It may be formed by press working. Even when the work 100 at room temperature is pressed and molded in this way, the same effects as those of the above-described embodiments can be obtained.

Further, in each of the above-described embodiments, two lower mold guide pins 22 are provided and two lower mold guide holes 17 are provided, but the number of lower mold guide pins 22 and lower mold guide holes 17 is provided. Is not limited to the above, and for example, three or more pairs of lower mold guide pins 22 and lower mold guide holes 17 may be provided. However, when three or more pairs of the lower mold guide pin 22 and the lower mold guide hole 17 are provided, it may be difficult to control the clearance and it may be difficult to move the cutting blade 12 with respect to the upper mold holder 10 in the Z direction. be. By providing two pairs of the lower mold guide pin 22 and the lower mold guide hole 17 as in the present embodiment, it is easy to control the clearance between the lower mold guide pin 22 and the lower mold guide hole 17. In addition to being able to do this, the cutting blade 12 can be easily moved in the Z direction with respect to the upper die holder 10. Similarly, for the upper mold guide pin 13 and the upper mold guide hole 14, three or more pairs of the upper mold guide pin 13 and the upper mold guide hole 14 may be provided.

1 Pressing equipment 10 Upper mold holder 11 Upper molding blade 12 Cutting blade 13 Upper mold guide pin 14 Upper mold guide hole 15 Drive means 15a Main body 15b Rod 16 Through hole 17 Lower mold guide hole 18 Side plate 19 Frame part 20 Lower mold holder 21 Lower molding blade 22 Guide pin for lower mold 100 Work 101 Object to be molded

Claims (6)

With the upper mold holder to which the upper molding blade is fixed,
A lower mold holder to which the lower forming blade corresponding to the upper forming blade is fixed, and
Equipped with
The upper mold holder and the lower mold holder are provided so as to be relatively movable so as to change the distance between the upper forming blade and the lower forming blade, and are provided between the upper forming blade and the lower forming blade. It is a press processing device that presses the work with a machine to form an object to be molded.
The upper mold holder is provided with a cutting blade provided so as to be movable in a relative moving direction with respect to the upper mold holder.
The cutting blade is guided by a guide means that regulates movement in a direction orthogonal to the relative movement direction with respect to the upper mold holder.
The lower mold holder is provided with a guide pin protruding toward the cutting blade.
A press working apparatus characterized in that the cutting blade is provided with a guide hole into which the guide pin is inserted. The guiding means is
An upper mold guide pin provided on the cutting blade and protruding toward the upper mold holder in the relative moving direction, and a guide pin for the upper mold.
An upper mold guide hole provided in the upper mold holder into which the upper mold guide pin is inserted, and a guide hole for the upper mold.
The press working apparatus according to claim 1, wherein the press working apparatus is characterized by having. The object to be molded is formed between the upper forming blade and the lower forming blade at the lower dead center in the relative movement of the upper die holder to the lower die holder, and the guide pin is located at the lower dead center. The press working apparatus according to claim 1 or 2, wherein the press processing apparatus has a length to be inserted into the guide hole first. The press working apparatus according to any one of claims 1 to 3, wherein the guide pin is arranged at a position corresponding to each of a pair of diagonal corner portions of the cutting blade. Claims 1 to 4, wherein the guide pin has a length protruding from the side opposite to the lower mold holder of the cutting blade at a position where the object to be molded is cut by the cutting blade. The press working apparatus according to any one of the items. The first aspect of the present invention is characterized in that, at least on the side surface of the cutting blade on the side of the upper forming blade, a side plate for positioning the cutting blade and the upper forming blade or the upper die holder is provided. 5. The press working apparatus according to any one of 5.

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