JP2011194408A - Mold for punching hole and ejecting pin and method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold for punching a hole on an identical metal plate and forming a hollow pin, both conducted integrally by a single mold, thereby improving the quality of a molded article.SOLUTION: The mold keeps vertical positions of the bottom surface of a stripper plate 22 at a hole-punching side and the bottom surface of a stripper plate 122 at a pin-ejecting side, wherein the mold forms the hollow pin P by sandwiching the metal plate 2 between a die plate 30 at the hole-punching side and the stripper plate 22 at the pin-ejecting side and between a die plate 130 at the pin-ejecting side and the plate 122, and in this state, the mold lifts the plate 22 and the plate 122 and ejects the pin P out of the inside of a through-hole 130a of a second lower mold at the pin-ejecting side.

Description

  For progressive metal molds that perform a plurality of processes on the same metal plate with a single mold, punching and formation of a hollow shaft protruding from the metal plate (hereinafter referred to as “hollow pin”) are summarized. The present invention relates to a punching pin mold and a processing method.

2. Description of the Related Art Conventionally, there is a mold that performs a plurality of processes in a single mold on the same metal plate. As such a mold, there is a progressive mold that performs a plurality of processes in a single mold on the same metal plate that is sequentially fed. As a technique related to the structure, for example, disclosed in Patent Document 1 There is something that has been.
The technique disclosed in Patent Document 1 is a progressive die having two blocks arranged in order along the direction in which the metal plate is fed, and two blocks for the fed metal plate by these two blocks. Processing is performed in a single mold.

JP 2002-248526 A

  In the technology described in Patent Document 1, two different types of processing are performed on one metal plate by performing different types of processing together in two blocks. It is possible to do it collectively by type. Here, two different types of processing means, for example, that one of the two blocks is drilled to form a through hole in the metal plate, and the other block is to form a hollow pin in the metal plate. Is what you do.

And, as described above, in the progressive metal mold of the configuration in which two different types of processing are performed together in one mold for the same metal plate, when removing the processed metal plate from the mold, It is necessary to raise the stripper plate at the same height between the two blocks. This is done to prevent deformation of the metal plate that occurs between the two blocks.
Here, the stripper plate is a plate-like member that holds the metal plate between the die plate that supports the metal plate from below and holds the metal plate from below when the metal plate is processed. Further, when removing the processed metal plate from the stripper plate, the stripper plate is raised and the metal plate is lifted from the upper surface of the die plate.

However, in a progressive die having a configuration in which punching and hollow pin formation are performed together on the same metal plate, when the stripper plate is raised after the processing of the metal plate, the height of the stripper plate is increased between the two blocks. There is a possibility that it will shift.
The height difference of the stripper plate at the time of ascending as described above is due to the fact that the metal plate is less likely to come off (hard to come off) than the punch that has been punched out than the punch that has been unpinned. appear. This is because the metal plate often bites on the outer peripheral surface of the punched pin, and when the metal plate bites on the outer peripheral surface of the punched pin, the stripper plate is lifted by this metal plate. It is because there is a possibility of being.

And if the height of the stripper plate at the time of ascent | descent shifts between two blocks, a difference will generate | occur | produce in the height (up-down direction position) of a metal plate between two blocks. For this reason, a deformation | transformation may arise in a metal plate between two blocks.
As described above, in the conventional technique, when the punching and the formation of the hollow pin are collectively performed on one metal plate with a single mold, quality deterioration due to deformation of a processed product is sufficiently suppressed. It was difficult.

  The subject of this invention is preventing the deformation | transformation of a processed product in the metal mold | die which performs hole punching and formation of a hollow pin with one metal mold | die with respect to the same metal plate.

In order to solve the above problems, the punching pin die according to the present invention is
A punched side die plate (for example, the punched side die plate 30 of FIG. 1) that supports a metal plate (for example, the metal plate 2 of FIG. 1) from below and the punched side die with the metal plate interposed therebetween. A hole-stripping stripper plate (for example, a hole-stripping side stripper plate 22 in FIG. 1) facing the plate, and a through-hole (for example, a pin pull-out side first in FIG. 1) supporting the metal plate from below and penetrating vertically. A pin-out side die plate (for example, the pin-out side die plate 130 in FIG. 1) having two lower mold insertion holes 130a) and a through-hole penetrating in the vertical direction (for example, the pin-out side second punch insertion hole in FIG. 1) 122a) and a pinning-side stripper plate (for example, pinning-side stripper plate 122 in FIG. 1) facing the pinning-side die plate with the metal plate in between, The metal plate, which is inserted into the through hole of the lead-out side stripper plate and arranged on the pin lead-out side die plate, is pushed into the through-hole of the pin lead-out side die plate from above and protrudes downward from the metal plate. Between the pin-out side punch (for example, the pin-out side punch 124 in FIG. 1) and the hole-out side die plate and the hole-out side stripper plate. From the state in which the hollow pin is formed with the metal plate sandwiched between the pin exit side die plate and the pin exit side stripper plate, the punched side stripper plate and the pin exit side stripper plate are raised. When the hollow pin is extracted from the through hole of the pin output side die plate, the hole extraction side stripper plate is removed. Is characterized by comprising a plate height holding mechanism for holding the lower surface of the bets and the vertical position of the lower surface of the pin-out side stripper plate, the.

  With such a configuration, when the formed hollow pin is withdrawn, when the hole side stripper plate and the pin side stripper plate are lifted, the bottom surface of the hole side stripper plate and the bottom surface of the pin side stripper plate are It becomes possible to hold the directional position.

  Thus, after the punched side punch having the through hole formed in the metal plate is pulled out from the through hole in the state where the vertical position of the punched side stripper plate and the pin outlet side stripper plate is held, the pin is removed from the formed hollow pin. The delivery punch can be removed. The punching side punch means punching a metal plate, which is inserted through the through hole of the punching side stripper plate and arranged on the punching side die plate, from the upper side to the lower side. It is a member for forming a through hole penetrating in the vertical direction.

Therefore, it is possible to suppress deformation that occurs in the metal plate when the formed hollow pin is extracted, and it is possible to suppress deformation that occurs in the metal plate when the processed metal plate is removed from the mold. Therefore, the quality of the processed product can be further improved.
In addition, a die for punching out a pin according to one aspect of the present invention,
An upper die set for punching side (for example, an upper die set 12 for punching side in FIG. 1) disposed above the punching side stripper plate and movable in the vertical direction, and an upper side of the pinning side stripper plate. And a pin unloading upper die set (for example, pin unloading upper die set 112 in FIG. 1) that moves in the vertical direction together with the hole punching upper die set, and maintains the plate height. The mechanism includes the punching side upper die set and the punching hole in a state in which the punching side punch pushes a metal plate disposed on the pinning side die plate into a through hole of the pining side die plate. Hole-side plate coupling mechanism (for example, the hole-side plate locking mechanism 38 in FIG. 1 and the hole-side stripper in FIG. 2). Ring 36), and the pin take-up side die die and the pin take-out side die plate in a state in which the metal plate disposed on the pin take-out side die plate is pushed into a through hole of the pin take-out side die plate A pinning-side plate coupling mechanism (for example, a pinning-side plate locking mechanism 138 in FIG. 1 and a pinning-side pin support spring 132 in FIG. 6) that couples the pinning-side stripper plate so as to rise together. It is characterized by.

With such a configuration, when the formed hollow pin is pulled out, it is possible to raise the hole punching side stripper plate and the pin pulling side stripper plate together with the hole punching side upper die set and the pin pulling side upper die set. Become.
Therefore, it is possible to suppress deformation that occurs in the metal plate when the formed hollow pin is extracted, and it is possible to suppress deformation that occurs in the metal plate when the processed metal plate is removed from the mold. Therefore, the quality of the processed product can be further improved.

Moreover, the punching pinning processing method according to an aspect of the present invention includes:
A pin-out side die plate and a pin-out side between the perforated side die plate and the perforated side stripper plate that support the metal plate from below, and that have a through hole that supports the metal plate from below and penetrates in the vertical direction. The metal plate is sandwiched between a stripper plate and the metal plate disposed on the pinning-side die plate by a pinning-side punch inserted through a through hole of the pinning-side stripper plate. A hollow pin forming step of forming a hollow pin that is pushed from above into a through hole of the die plate and protrudes downward from the metal plate, and the hollow pin formed in the hollow pin forming step includes the hole-stripping stripper. The plate and the pin exit side stripper plate are raised and extracted from the through hole of the pin exit side die plate. An empty pin extracting step, and in the hollow pin extracting step, when the hole removing side stripper plate and the pin extracting side stripper plate are raised, the lower surface of the hole extracting side stripper plate and the pin extracting side stripper plate It is characterized in that the vertical position of the lower surface of the is held.

  With such a configuration, when the formed hollow pin is withdrawn, when the hole side stripper plate and the pin side stripper plate are lifted, the bottom surface of the hole side stripper plate and the bottom surface of the pin side stripper plate are It becomes possible to hold the directional position.

  Thus, after the punched side punch having the through hole formed in the metal plate is pulled out from the through hole in the state where the vertical position of the punched side stripper plate and the pin outlet side stripper plate is held, the pin is removed from the formed hollow pin. The delivery punch can be removed. The punching side punch means punching a metal plate, which is inserted through the through hole of the punching side stripper plate and arranged on the punching side die plate, from the upper side to the lower side. It is a member for forming a through hole penetrating in the vertical direction.

Therefore, it is possible to suppress deformation that occurs in the metal plate when the formed hollow pin is extracted, and it is possible to suppress deformation that occurs in the metal plate when the processed metal plate is removed from the mold. Therefore, the quality of the processed product can be further improved.
Moreover, the punching pinning processing method according to an aspect of the present invention includes:
In the hollow pin forming step, the pin-out side punch pushes the metal plate disposed on the pin-out side die plate into the through hole of the pin-out side die plate, and above the punch-out side stripper plate. The upper die set on the punching side that is disposed in the vertical direction and is movable in the vertical direction and the punching-side stripper plate are connected together so as to rise, and the punching-side stripper plate is disposed above and on the pinning-side stripper plate. The pin take-up side upper die set that moves in the vertical direction together with the side upper die set and the pin take-out side stripper plate are connected so as to rise together.

With such a configuration, when the formed hollow pin is pulled out, it is possible to raise the hole punching side stripper plate and the pin pulling side stripper plate together with the hole punching side upper die set and the pin pulling side upper die set. Become.
Therefore, it is possible to suppress deformation that occurs in the metal plate when the formed hollow pin is extracted, and it is possible to suppress deformation that occurs in the metal plate when the processed metal plate is removed from the mold. Therefore, the quality of the processed product can be further improved.

It is a figure which shows schematic structure of the metal mold | die for hole punching out processing in a progressive metal mold | die. FIG. 2 is an enlarged view of a range surrounded by a circle II in FIG. 1. FIG. 3 is an enlarged view of a range surrounded by a circle III in FIG. 1. FIG. 4 is a view taken along line IV in FIG. 3. FIG. 5 is a view taken in the direction of arrow V in FIG. 4. FIG. 4 is an enlarged view of a range surrounded by a circle VI in FIG. 1. FIG. 2 is an enlarged view of a range surrounded by a circle VII in FIG. 1. It is a VIII line arrow directional view of FIG. FIG. 9 is a view taken along arrow IX in FIG. 8. It is a figure which shows the state of the metal mold | die for a punching pin out process, and a metal plate in a material holding process. It is a XI arrow directional view of FIG. It is an XII arrow directional view of FIG. It is a figure which shows the state of the metal mold | die for hole punching out processing and a metal plate in a hollow pin formation process. FIG. 14 is a view taken in the direction of arrows XIV in FIG. 13. It is a XV arrow directional view of FIG. It is a figure which shows the state of the metal mold | die for a hole punching process and a metal plate in a hole punching process. It is a XVII line arrow directional view of FIG. It is a XVIII line arrow directional view of FIG. It is a figure which shows the state of the metal mold | die for hole punching processing, and a metal plate in a hole punching punch extraction process. FIG. 20 is a view on arrow XIX in FIG. 19. It is a XXI line arrow directional view of FIG. It is a figure which shows the state of the metal mold | die for hole punching and a metal plate in a hollow pin extraction process. It is a XXIII line arrow directional view of FIG. It is a XXIV line arrow directional view of FIG. It is a figure which shows the state of the metal mold | die for a punching pin out process, and a metal plate in a material removal process.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments (embodiments) of a punching pin die and a punching pin method according to the present invention will be described below with reference to the drawings.
(First embodiment)
(Overall structure of punching pin mold)
Hereinafter, with reference to FIG. 1, an overall configuration of the punching pin die according to the first embodiment will be described.

FIG. 1 is a diagram illustrating a schematic configuration of a punching pin die 1.
In FIG. 1, a hole punching die 1 is formed by performing punching and pinning on a metal plate 2 that is sequentially fed while being supported by a stock line pin (not shown) described later. In a state in which the conveyance of No. 2 is stopped, it is performed collectively. In the first embodiment, as an example, a case where the direction in which the metal plate 2 is fed is changed from left to right in FIG. 1 will be described.

In the following embodiments, a case where the punching pinning die and the punching pinning method according to the present invention are applied to a progressive die will be described as an example. However, the punched pinning die and the punching pinning method according to the present invention are not limited to the progressive die, and may be applied to, for example, a single die.
Here, the punching process is a process of forming a through-hole penetrating the metal plate 2 in the thickness direction of the metal plate 2. The pinning process is a process for forming a hollow pin protruding downward from the metal plate 2 with respect to the metal plate 2.

  Further, as shown in FIG. 1, the punching pinning die 1 has a punching side processing block 10 for punching the metal plate 2 and a pinning processing for the metal plate 2. It has the pin take-out side processing block 100 to be performed. The punching side processing block 10 and the pinning side processing block 100 are arranged in parallel in the order of the punching side processing block 10 and the pinning side processing block 100 along the direction in which the metal plate 2 is fed.

(Overall configuration of drilling side processing block)
Hereinafter, with reference to FIG. 1, an overall configuration of the punching side processing block 10 will be described.
As shown in FIG. 1, the punching side processing block 10 includes a punching side upper die set 12, a punching side upper die backing plate 14, a punching side punch backing plate 16, and a punching side punch plate. 18 is provided.

  In addition, the punching side processing block 10 includes a punching side stripper backing plate 20, a punching side stripper plate 22, a punching side punch 24, a punching side lower die set 26, and a punching side lower side. A mold backing plate 28 is provided.

  Further, the punching side processing block 10 includes a punching side die plate 30, a punching side pin support spring 32, a punching side support pin 34, a punching side stripper spring 36, and a punching side plate locking mechanism 38. It has.

  The perforated side upper die set 12 is connected to a drive mechanism (not shown), and is formed to be movable in the vertical direction (vertical direction in FIG. 1) using a driving force generated by the drive mechanism. . The drive mechanism includes, for example, a mechanical type using a rotational motion of a motor and a hydraulic type that applies pressure to a liquid such as oil. The vertical direction is the same direction as the thickness direction of the metal plate 2, and this is the same in the following description.

  The perforated side upper die set 12 has a perforated side upper die recess 12a therein. The perforated side upper mold recess 12 a is a recess that opens on the lower surface of the perforated side upper die set 12.

  The perforated side upper die backing plate 14 is attached to the lower surface of the perforated side upper die set 12, and has a perforated side upper die insertion hole 14a. The perforated side upper mold insertion hole 14a is a through-hole penetrating the perforated side upper mold backing plate 14 in the vertical direction, and matches the perforated side upper mold recess 12a in the perforated side upper mold backing plate 14. Formed in position.

The hole punching side punch backing plate 16 is disposed below the hole punching side upper mold backing plate 14.
The hole punching side punch plate 18 is attached to the lower surface of the hole punching side punch backing plate 16, and has a hole punching side first upper die arrangement hole 18 a and a hole punching side punch arrangement hole 40.

The perforated side first upper mold arrangement hole 18a is a through hole that penetrates the perforated side punch plate 18 in the vertical direction.
The hole punching side punch arrangement hole 40 is a through hole penetrating the vicinity of the center of the hole punching side punch plate 18 in the vertical direction, and has a hole punching side large diameter arrangement part 40a and a hole punching side small diameter insertion hole 40b. Yes.

  The hole-piercing-side large-diameter arrangement portion 40 a is a recess that opens on the upper surface of the hole-punching-side punch plate 18. The perforated side small diameter insertion hole 40b has a smaller diameter than the perforated side large diameter disposition portion 40a, and is a through hole that penetrates the bottom surface of the perforated side large diameter disposition portion 40a and the lower surface of the perforated side punch plate 18. .

  The perforated side stripper backing plate 20 is disposed below the perforated side punch plate 18 and is attached to the upper surface of the perforated side stripper plate 22 using bolts or the like (not shown).

Moreover, the punching side stripper backing plate 20 has a punching side second upper mold arrangement hole 20a and a punching side first punch insertion hole 20b.
The perforated side second upper mold arrangement hole 20 a is a through-hole penetrating the perforated side stripper backing plate 20 in the vertical direction, and among the perforated side stripper backing plate 20, the perforated side first upper mold arrangement hole 18 a. It is formed at a position that matches.

The hole punching side first punch insertion hole 20b is a through hole penetrating the vicinity of the center of the hole punching side stripper backing plate 20 in the vertical direction.
The perforated side stripper plate 22 is disposed below the perforated side stripper backing plate 20 and is attached to the perforated side punch backing plate 16 using a perforated side stripper spring 36 and a stripper shaft (not shown). ing.

Further, the hole punching side stripper plate 22 has a hole punching side second punch insertion hole 22a. The hole punching side second punch insertion hole 22 a is a through hole that penetrates the vicinity of the center of the hole punching side stripper plate 22 in the vertical direction. Of the hole punching side stripper plate 22, the hole punching side first punch insertion hole 20 b It is formed at a matching position.
Further, the lower surface of the punched side stripper plate 22 faces the upper surface of the metal plate 2.

The hole punching side punch 24 is formed in a columnar shape having a plurality of steps having different outer diameters, and includes a hole punching side large diameter punch part 24a and a hole punching side small diameter punch part 24b.
The perforated side large-diameter punch portion 24a is disposed in the perforated side large-diameter arranging portion 40a, and the upper surface thereof is in contact with the lower surface of the perforated side punch backing plate 16, and the lower surface thereof is large on the perforated side. It faces the bottom surface of the diameter arrangement portion 40a.

The hole punching side small diameter punch part 24b is formed to have a smaller diameter than the hole punching side large diameter punch part 24a, and extends downward from the lower surface of the hole punching side large diameter punch part 24a. Further, the punching side small diameter punch portion 24b is inserted from the top to the bottom in the order of the punching side small diameter insertion hole 40b, the punching side first punch insertion hole 20b, and the punching side second punch insertion hole 22a. Yes. Furthermore, the lower surface of the punched side small diameter punch portion 24 b faces the upper surface of the metal plate 2.
The outer diameter of the punching side small diameter punch portion 24b is set to a value corresponding to the diameter of the through hole formed in the metal plate 2 in the punching process.

As described above, the punching side punch 24 is inserted into the punching side second punch insertion hole 22a of the punching side stripper plate 22 so as to be movable in the vertical direction.
The perforated side lower die set 26 is fixed to a base or the like not shown, and has a perforated side first lower die through hole 26a. The perforated side first lower die through hole 26a is a through hole that penetrates the perforated side lower die set 26 in the vertical direction.

  The perforated side lower mold backing plate 28 is attached to the upper surface of the perforated side lower mold set 26 and has a perforated side second lower mold through hole 28a. The perforation side second lower mold through hole 28a is a through hole that penetrates the perforation side lower mold backing plate 28 in the vertical direction. Of the perforation side lower mold backing plate 28, the perforation side first lower mold penetration It is formed at a position that matches the hole 26a.

The inner diameter of the punched-side second lower mold through hole 28a is set to a value smaller than the inner diameter of the punched-side first lower mold through hole 26a.
The perforated side die plate 30 is attached to the upper surface of the perforated side lower mold backing plate 28 and has a perforated side lower mold punch insertion hole 42.
The perforation side lower die punch insertion hole 42 is a through hole that penetrates the perforation side die plate 30 in the vertical direction, and matches the perforation side second lower die through hole 28 a of the perforation side die plate 30. Formed in position.

Further, the punching side lower die punch insertion hole 42 includes a lower die punch insertion same diameter portion 42a and a lower die punch insertion enlarged diameter portion 42b.
The lower die punch insertion same diameter portion 42a forms an upper portion of the punching side lower die punch insertion hole 42, and the inner diameter thereof is set to a value larger than the outer diameter of the punching side small diameter punch portion 24b. Yes. Specifically, in addition to the outer diameter of the punching-side small-diameter punch portion 24b, the inner diameter is set with a margin corresponding to the thickness of the metal plate 2 to be punched.

  The lower die punch insertion diameter increasing portion 42b forms a lower part of the punching side lower die punch insertion hole 42, and its inner diameter increases from the upper side to the lower side. The inner diameter on the upper end side of the lower die punch insertion enlarged portion 42b, that is, the minimum inner diameter is set to be the same as the inner diameter of the lower die punch insertion same diameter portion 42a. On the other hand, the inner diameter on the lower end side of the lower die punching enlarged diameter portion 42b, that is, the maximum inner diameter is set to be the same as the inner diameter of the punching side second lower die through hole 28a.

  Further, the upper surface of the punched-side die plate 30 faces the lower surface of the metal plate 2. That is, the perforated side die plate 30 is disposed below the perforated side stripper plate 22 and faces the perforated side stripper plate 22 with the metal plate 2 interposed therebetween.

(Detailed configuration of punched side pin support spring, punched side support pin, punched side stripper spring)
Hereinafter, with reference to FIG. 1, a detailed configuration of the hole-piercing side pin support spring 32, the hole-piercing side support pin 34, and the hole-piercing side stripper spring 36 will be described with reference to FIG. 2.

  FIG. 2 is an enlarged view of a range surrounded by a circle II in FIG. In FIG. 2, for the sake of explanation, a part is shown broken away. Further, the positional relationship among the hole-piercing-side pin support spring 32 and the hole-piercing-side support pin 34 and the hole-piercing-side stripper spring 36 in FIG. 2 is different from the positional relationship shown in FIG. However, the actual positional relationship between the perforated side pin support spring 32 and the perforated side support pin 34 and the perforated side stripper spring 36 is the relationship shown in FIG. 2, and the positional relationship shown in FIG. Is a positional relationship for simplifying the illustration.

  The perforated side pin support spring 32 is disposed in the perforated side upper mold recess 12a, and its expansion / contraction direction is directed in the vertical direction. Further, the upper end portion of the hole-side pin support spring 32 is seated on the bottom surface of the hole-side upper mold recess 12a. In the first embodiment, as an example, a case where the hole-side pin support spring 32 is formed of a coil spring will be described.

The perforated side support pin 34 is formed in a columnar shape having a plurality of steps having different outer diameters, and includes a perforated side large diameter pin portion 34a and a perforated side small diameter pin portion 34b.
The perforated side large-diameter pin portion 34a is disposed in the perforated side upper mold recess 12a, and the lower end portion of the perforated side pin support spring 32 is seated on the upper surface thereof.

  The holed side small diameter pin part 34b is formed to have a smaller diameter than the holed side large diameter pin part 34a, and extends downward from the lower surface of the holed side large diameter pin part 34a. Further, the holed side small-diameter pin portion 34b is inserted from the upper side to the lower side in the order of the holed side upper mold insertion hole 14a and the holed side punch backing insertion hole 16a. The punching side punch backing insertion hole 16a is a through-hole penetrating the punching side punch backing plate 16 in the vertical direction, and matches the punching side upper die insertion hole 14a of the punching side punch backing plate 16. It is formed in the position to do.

  The lower end surface of the punched-side small-diameter pin portion 34b faces the upper surface of the punched-side punch plate 18, and includes a punched-side support pin mounting bolt 44 and the like inserted through the punched-side punch plate 18 from below. And is attached to the punched side punch plate 18.

The perforated side stripper spring 36 is formed by a coil spring, and its expansion / contraction direction is directed in the vertical direction.
The elastic force of the punching side stripper spring 36 is set to a value stronger than the elastic force of the punching side pin support spring 32.
Further, the maximum length of the punched-side stripper spring 36 is set to be the same as the maximum length of the punched-side pin support spring 32. This setting is performed, for example, by adjusting the depth of the above-described punched-side upper mold recess 12a and the length of the punched-side stripper shaft 46 described later.

The upper end side of the hole punching side stripper spring 36 is disposed in the hole punching side first upper mold arrangement hole 18 a and is seated on the lower surface of the hole punching side punch backing plate 16.
On the other hand, the lower end side of the perforated side stripper spring 36 is disposed in the perforated side second upper mold arrangement hole 20 a and is seated on the upper surface of the perforated side stripper plate 22.
Further, a hole side stripper shaft 46 is inserted into the hole side stripper spring 36 (gap).

  The perforated side stripper shaft 46 is inserted into the perforated side stripper spring 36 with its axis directed in the vertical direction. Further, the upper end side of the holed side stripper shaft 46 is inserted into the holed side shaft insertion hole 16b. The perforated side shaft insertion hole 16b is a through-hole penetrating the perforated side punch backing plate 16 in the vertical direction. Among the perforated side punch backing plate 16, the perforated side first upper die arrangement hole 18a and It is formed at a matching position.

The upper end surface of the hole punching side stripper shaft 46 is attached to the hole punching side punch backing plate 16 using a hole punching side first shaft mounting bolt 48, a hole punching side shaft retaining ring 50 and the like.
The perforated side first shaft mounting bolt 48 is a bolt in which the upper end side of the perforated side stripper shaft 46 is inserted from below into the perforated side punch backing plate 16.

  The perforated side shaft retaining ring 50 is an annular plate material, and is disposed on the upper surface of the perforated side punch backing plate 16, and the perforated side first shaft mounting bolt 48 is inserted into the gap. Further, the inner diameter of the hole-side shaft retaining ring 50 is smaller than the inner diameter of the hole-side shaft insertion hole 16b, and the outer diameter of the hole-side shaft retaining ring 50 is larger than the inner diameter of the hole-side shaft insertion hole 16b. Is also big.

On the other hand, the lower end surface of the punched-side stripper shaft 46 faces the upper surface of the punched-side stripper plate 22 and is attached to the punched-side stripper plate 22 using the punched-side second shaft mounting bolt 52 or the like. ing.
The hole-side second shaft mounting bolt 52 is a bolt through which the hole-side stripper plate 22 is inserted from below to above.

  As shown in FIG. 2, a hole-side shaft housing recess 54 is formed in the lower surface of the hole-side upper die set 12 and the hole-side upper die backing plate 14. The hole-side shaft housing recess 54 is a recess that can accommodate a hole-side first shaft mounting bolt 48 and a hole-side shaft retaining ring 50, that is, a member protruding from the upper surface of the hole-side punch backing plate 16. is there.

(Configuration of punched side stock line pin)
As shown in FIG. 2, the perforated side processing block 10 includes a perforated side stock line pin 56.
The perforated side stock line pin 56 is a member that holds the metal plate 2, and protrudes from the upper surface of the perforated side die plate 30.

Further, the punched side stock line pin 56 has a punched side line pin small diameter portion 56a and a punched side line pin large diameter portion 56b.
The perforated side line pin small-diameter portion 56a is inserted into a perforated side line pin through-hole 30a of the perforated side die plate 30, and a material holding groove 56c that is continuous with the outer peripheral surface in the circumferential direction on its outer peripheral surface. Is formed. The material holding groove 56c is formed with a depth and a vertical width that can hold the end of the metal plate 2 in the width direction. The hole-side line pin through hole 30a is a through-hole penetrating the hole-side die plate 30 in the vertical direction.

The perforated side line pin large diameter portion 56b is continuous with the lower end surface of the perforated side line pin small diameter portion 56a and has a larger diameter than the perforated side line pin small diameter portion 56a.
Further, the hole-side line pin large-diameter portion 56b is disposed in the hole-side line pin spring accommodating recess 60 in a state of being pressed and urged upward by the hole-side line pin spring 58. The perforated side line pin spring 58 is formed of a coil spring, and its expansion / contraction direction is directed in the vertical direction. Further, in the hole-side line pin spring accommodating recess 60, the hole-side line pin spring is disposed below the large-diameter portion 56b. The perforated side line pin spring accommodating recess 60 is a recess formed in the perforated side lower mold backing plate 28 and on the upper surface of the perforated side lower die set 26.

  As described above, the perforated side stock line pin 56 protrudes from the upper surface of the perforated side die plate 30 while being movable in the vertical direction. A hole-side line pin accommodating recess 22 b that is a recess capable of accommodating the upper end side of the hole-side stock line pin 56 is opened on the lower surface of the hole-side stripper plate 22.

(Detailed configuration of the hole-side plate lock mechanism)
Hereinafter, a detailed configuration of the hole-extracting plate locking mechanism 38 will be described with reference to FIGS. 1 and 2 and FIGS. 3 to 5.
FIG. 3 is an enlarged view of a range surrounded by a circle III in FIG. 1, and is a diagram showing a detailed configuration of the hole-side plate lock mechanism 38. 4 is a view taken along the line IV in FIG. 3, and FIG. 5 is a view taken along the line V in FIG. Note that, in FIGS. 3 to 5, a part thereof is shown for the sake of explanation.

As shown in FIGS. 3 to 5, the hole-piercing side plate locking mechanism 38 includes a hole-piercing-side upper cam driver 62, a hole-piercing-side lower cam driver 64, a hole-piercing-side cam slider 66, A side cam guide block 68 is provided.
The perforated side upper cam driver 62 is formed of a perforated side upper cam main body portion 62a and a perforated side downward extending portion 62b.

  The perforated side upper mold backing plate 14 is positioned by the perforated side upper mold cam driver fixing screw 72 while being positioned by the perforated side upper cam driver positioning knock pin 70. It is attached to the side of the. In addition, the side surface of the perforated side upper mold backing plate 14 is a left side surface and a right side surface in FIG. 1. Thereby, the punching side upper die cam driver 62 is arranged to move in the vertical direction as the punching side upper die set 12 moves in the vertical direction (vertical direction in FIG. 1).

The perforated side lower extending portion 62b extends below the perforated side upper mold backing plate 14.
Further, on the surface facing the hole-drilling cam slider 66 of the hole-drilling side lower extension 62b, there is a hole-drilling-side upper cam driver protruding part 74 that protrudes from this surface toward the hole-drilling cam slider 66. Is provided. The detailed configuration of the holed side upper cam driver protrusion 74 will be described later.

The perforated side lower mold cam driver 64 is formed of a perforated side lower mold cam main body portion 64a and a perforated side upper extending portion 64b.
The hole side lower mold cam body 64a is positioned by the hole side lower mold cam driver positioning knock pin 76, and the side surface of the hole side die plate 30 using the hole side lower cam driver fixing screw 78. Is attached. In addition, the side surface of the punching side die plate 30 is a left side surface and a right side surface in FIG.

The hole extending side upper extending portion 64 b extends below the hole punching side die plate 30.
Further, on the surface facing the hole-drilling side cam slider 66 of the hole-drilling side upper extension 64b, a hole-drilling side lower cam driver protruding part 80 protruding from this surface toward the hole-drilling side cam slider 66 is provided. Is provided.

The perforated side lower cam driver projecting portion 80 is formed so that the projecting amount is the same as the projecting amount of the perforated side upper cam driver projecting portion 74.
The detailed configuration of the holed side lower cam driver protrusion 80 will be described later.
Further, the upper part 64b on the punching side is arranged at a position farther from the punching side punch plate 18 than the lower extension part 62b on the punching side.

  The perforated side cam slider 66 is held by a perforated side cam guide block 68, and the side surface of the perforated side punch plate 18 (on the left side and the right side in FIG. 1) via the perforated side cam guide block 68. Surface).

As a result, the hole-drilling cam slider 66 is arranged to move in the vertical direction as the hole-drilling upper die set 12 moves in the vertical direction. The holding of the hole-side cam slider 66 by the hole-side cam guide block 68 will be described later.
Further, as will be described later, the perforated side cam slider 66 meshes with the perforated side upper cam driver 62 or the perforated side lower cam driver 64 according to the rising and lowering of the perforated side upper die set 12. Placed in position.

Further, the hole-side cam slider 66 is provided with a hole-side cam slider protrusion 82 and a hole-side cam slider operation pin 84.
The perforated side cam slider protruding portion 82 is provided on the surface of the perforated side cam slider 66 facing the perforated side upper mold main body 62a and the perforated side lower cam main body 64a. , And projecting toward the holed side upper cam body 62a and the holed lower cam body 64a.

Further, the hole-side cam slider protrusion 82 is formed such that the protrusion amount is the same as the protrusion amount of the hole-side lower cam driver protrusion 80 and the hole-side upper cam driver protrusion 74. Yes.
The detailed configuration of the hole-out cam slider protrusion 82 will be described later.
The hole-side cam slider operating pin 84 protrudes from the surface opposite to the hole-side cam slider protrusion 82 in the direction opposite to the hole-side cam slider protrusion 82, and between the end portions, A pedestal portion 84a having a diameter larger than that of the portion is provided.

The perforated side cam guide block 68 is attached to the side surface of the perforated side punch plate 18 using a perforated side cam guide block fixing screw 88 while being positioned by the perforated side cam guide block positioning knock pin 86. Yes.
The perforated side cam guide block 68 has an opening that penetrates the perforated side cam guide block 68 in the vertical direction. In this opening, a perforated side upper cam body 62a and a perforated side lower cam main body 64a are inserted so as to be movable in the vertical direction, and a perforated side cam slider 66 is disposed on the perforated side. It is arranged so as to be movable along the side surface of the punch plate 18.

(Holding structure of the hole-side cam slider by the hole-side cam guide block)
Next, a structure for holding the hole-side cam slider 66 by the hole-side cam guide block 68 will be described.

  When the perforated side cam slider 66 is held, portions of the opening that overlap with the perforated side cam slider 66 as viewed from above and below are respectively closed by the perforated side cam slider guide plate 90. This holding is performed in a state where the hole-side cam slider 66 is disposed in the opening of the hole-side cam guide block 68. At this time, the hole-side cam slider guide plate 90 is attached to the hole-side cam guide block 68 using the hole-side cam slider guide plate fixing screw 92.

  In addition to this, in the hole-side cam guide block 68, the hole-side cam slider operating pin 84 is located on the tip side of the pedestal portion 84a (opposite to the protruding direction of the hole-side cam slider protrusion 82). The hole-side cam slider operating spring 94 is disposed in the portion. Note that the front end side of the pedestal portion 84a is the opposite side to the protruding direction of the holed side cam slider protruding portion 82. Specifically, this arrangement is performed by seating one end of the hole-side cam slider operating spring 94 on the pedestal portion 84a.

  Of the spring 94 for punching side cam slider operation, the end opposite to the end seated on the pedestal portion 84 a is compressed by the punching side spring pressing plate 96. Further, a hole-side spring holding plate 96 that compresses the hole-side cam slider operating spring 94 is attached to the hole-side cam guide block 68 using a hole-side spring holding plate fixing screw 98.

  As a result, the perforated side cam slider 66 is urged toward the perforated side upper cam driver projecting portion 74 and the perforated side lower cam driver projecting portion 80 along the side surface of the perforated side punch plate 18. In this state, the hole-side cam guide block 68 is held.

(Detailed configuration of the punched side upper cam driver projection, the punched side lower cam driver projection, and the punched cam slider projection)
Next, the detailed configuration of the holed side upper cam driver protruding part 74, the holed side lower cam driver protruding part 80, and the holed side cam slider protruding part 82 will be described.

The perforated side upper cam driver protrusion 74 has a perforated side upper cam inclined surface 74a and a perforated side upper cam horizontal surface 74b.
The perforated side upper cam inclined surface 74a is continuous with the lower end surface of the perforated side downward extending portion 62b, and is formed so as to be inclined toward the perforated side cam slider 66 from the bottom to the top. ing. In addition, said lower direction is the direction of the punching side lower die set 26, and said upper direction is the direction of the punching side upper die set 12.

  The perforated side upper cam horizontal surface 74 b is formed above the perforated side upper cam inclined surface 74 a and is formed horizontally along the moving direction of the perforated side cam slider 66. In addition, a holed side upper mold cam chamfered portion 74c is provided between the holed side upper mold cam inclined surface 74a and the holed side upper mold cam horizontal surface 74b. The perforated side upper cam horizontal surface 74b is continuous through the perforated side upper cam chamfer 74c.

The perforated side lower cam driver protrusion 80 has a perforated side lower cam first inclined surface 80a and a perforated side lower cam second inclined surface 80b.
The perforated side lower mold cam first inclined surface 80a is continuous with the upper end surface of the perforated side upper extending portion 64b, and is inclined in a direction approaching the perforated side cam slider 66 from the upper side to the lower side. Is formed.

  The perforated side lower cam second inclined surface 80b is formed below the perforated side lower cam first inclined surface 80a, and inclines in a direction away from the perforated side cam slider 66 from the upper side to the lower side. is doing. In addition, a punching side lower mold cam chamfer 80c is provided between the punching side lower cam first inclined surface 80a and the punching side lower cam second inclined surface 80b. The mold cam first inclined surface 80a and the holed side lower mold cam second inclined surface 80b are continuous via the holed side lower mold cam chamfered portion 80c.

The perforated side cam slider protrusion 82 has a perforated side slider inclined surface 82a and a perforated side slider horizontal surface 82b.
The perforated side slider inclined surface 82a is formed so as to be inclined toward the perforated side upper cam driver projecting portion 74 and the perforated side lower cam driver projecting portion 80 from the upper side to the lower side. The direction approaching the perforated side upper cam driver 62 and the perforated side lower cam driver 64 is the right direction in FIG.

In addition, the inclination angle of the hole-extracting slider inclined surface 82a is set to an angle that allows surface contact with the hole-extracting upper cam inclined surface 74a and the hole-extracting lower cam second inclined surface 80b.
The perforated side slider horizontal surface 82 b is formed below the perforated side slider inclined surface 82 a and is formed horizontally along the moving direction of the perforated side cam slider 66. That is, the perforated side slider horizontal surface 82b is a surface parallel to the perforated side upper cam horizontal surface 74b.

  In addition, a punching side slider chamfer 82c is provided between the punching side slider inclined surface 82a and the punching side slider horizontal surface 82b. As a result, the perforated side slider inclined surface 82a and the perforated side slider horizontal surface 82b are continuous via the perforated side slider chamfer 82c.

(Overall configuration of processing block on the pin exit side)
Hereinafter, with reference to FIG. 1, the overall configuration of the pinning-side processing block 100 will be described.
As shown in FIG. 1, the pinning side processing block 100 includes a pinning side upper die set 112, a pinning side upper die backing plate 114, a pinning side punch backing plate 116, and a pinning side punch plate. 118 is provided.

  In addition, the pin exit side processing block 100 includes a pin exit side stripper backing plate 120, a pin exit side stripper plate 122, a pin exit side punch 124, a pin exit side lower die set 126, and a pin exit side lower. A mold backing plate 128 is provided.

  Further, the pinning-side processing block 100 includes a pinning-side die plate 130, a knockout spring 200, and a knockout 202. The pinning-side processing block 100 includes a pinning-side pin support spring 132, a pinning-side support pin 134, a pinning-side stripper spring 136, and a pinning-side plate lock mechanism 138.

  The pin lead-out upper die set 112 is connected to the same drive mechanism as the hole punching-side upper die set 12. Therefore, the pin lead-out side upper die set 112 moves in the vertical direction together with the hole punching side upper die set 12 by the driving force generated by the driving mechanism. In addition, since the other structure of the pin take-out side upper die set 112 is a structure corresponding to the hole punching side upper die set 12 described above, the description thereof is omitted.

The configuration of the pin lead-out upper die backing plate 114 is a configuration corresponding to the above-described hole punching upper die backing plate 14, and thus the description thereof is omitted.
The configuration of the pin take-out side punch backing plate 116 is a configuration corresponding to the above-described punching side punch backing plate 16, and thus the description thereof is omitted.
The configuration of the pinning-side punch plate 118 is a configuration corresponding to the above-described punching-side punch plate 18, and therefore the description thereof is omitted.

The configuration of the pin lead-out side stripper backing plate 120 is a configuration corresponding to the above-described hole-extracting side stripper backing plate 20, and the description thereof will be omitted.
Since the configuration of the pin lead-out side stripper plate 122 is a configuration corresponding to the above-described holed side stripper plate 22, the description thereof is omitted.
Since the configuration of the pin take-out side punch 124 is a configuration corresponding to the above-described punching side punch 24, description thereof is omitted.

The pin exit side lower die set 126 is fixed to a base or the like not shown, and has a lower die recess 126a therein. The lower mold recess 126 a is a recess that opens on the upper surface of the pin exit side lower die set 126.
The pinning-side lower mold backing plate 128 is attached to the upper surface of the pinning-side lower mold die set 126 and has a pinning-side first lower mold insertion hole 128a. The pin take-out side first lower mold insertion hole 128a is a through-hole penetrating the pin take-out side lower mold backing plate 128 in the vertical direction, and a position in the pin take-out side lower mold backing plate 128 that matches the lower mold recess 126a. Is formed.

  The pinning-side die plate 130 is attached to the upper surface of the pinning-side lower mold backing plate 128 and has a pinning-side second lower mold insertion hole 130a. The pin lead-out side second lower mold insertion hole 130a is a through-hole penetrating the pin lead-out side die plate 130 in the vertical direction. Further, the pin take-out side second lower mold insertion hole 130a has a pin center on the upper side of the pin take-out side second punch insertion hole 122a and the pin take-out side first lower mold insertion hole 128a in the pin take-out side die plate 130. It is formed at a position that matches when viewed from the direction. The pin take-out side second punch insertion hole 122a is a through-hole penetrating the pin take-out side stripper backing plate 120 in the vertical direction.

  The pin take-out side second lower mold insertion hole 130a has an inner diameter smaller than that of the large-diameter knock-out portion 202a of the knock-out 202 and larger than that of the pin-out side small-diameter punch portion 124b. In addition, the description regarding the large diameter knockout part 202a is mentioned later.

  Here, the inner diameter of the pin outlet side second lower mold insertion hole 130a is set according to the thickness of the portion constituting the side surface of the hollow pin. That is, the plate thickness of the portion constituting the side surface of the hollow pin is determined by the gap formed between the pin outlet side second lower die insertion hole 130a and the pin outlet side small diameter punch portion 124b.

In addition, since the other structure of the pin take-out side die plate 130 is a structure corresponding to the punching side die plate 30 described above, the description thereof is omitted.
The knockout spring 200 is disposed in the lower mold recess 126a and the pin outlet side first lower mold insertion hole 128a, and the expansion / contraction direction thereof is directed in the vertical direction. In the first embodiment, the case where the knockout spring 200 is formed by a gas spring using a high-pressure gas will be described as an example. However, the knockout spring 200 may be formed by a coil spring, for example.

The knockout 202 is formed in a cylindrical shape having a plurality of steps having different outer diameters, like the pin-out punch 124, and has a large-diameter knockout portion 202a and a small-diameter knockout portion 202b.
The large-diameter knockout portion 202a is disposed in the pin exit side first lower mold insertion hole 128a, and gas constituting the knockout spring 200 is introduced into the lower mold recess 126a and the pin exit side first lower mold insertion hole 128a. Sealed. That is, the large-diameter knockout portion 202a has a sealing performance in the lower mold recess 126a and the pin take-out side first lower mold insertion hole 128a.

  The small-diameter knockout portion 202b is formed to have a smaller diameter than the large-diameter knockout portion 202a, and extends upward from the upper surface of the large-diameter knockout portion 202a. The small-diameter knockout portion 202b is inserted into the pin outlet side second lower mold insertion hole 130a, and is disposed in the pin outlet side first lower mold insertion hole 128a according to the expansion and contraction of the knockout spring 200.

The length of the small diameter knockout portion 202b is such that the knockout spring 200 is extended and the large diameter knockout portion 202a is in contact with the lower surface of the pinning side die plate 130, and the upper end surface of the small diameter knockout portion 202b is the pinning side die plate 130. It is set to a length that is flush with the upper surface.
As described above, the knockout 202 is disposed in the pinning-side second lower mold insertion hole 130a of the pinning-side die plate 130 so as to face the pinning-side punch 124, and the pinning-side second lower mold insertion is performed. It moves up and down in the hole 130a.

(Detailed configuration of pin-out side pin support spring, pin-out side support pin, pin-out side stripper spring)
Hereinafter, with reference to FIG. 1 and FIG. 6, a detailed configuration of the pinning-side pin support spring 132, the pinning-side support pin 134, and the pinning-side stripper spring 136 will be described.

  FIG. 6 is an enlarged view of a range surrounded by a circle VI in FIG. In FIG. 6, for the sake of explanation, a part is shown broken away. Further, the positional relationship between the pinning-side pin support spring 132 and the pinning-side support pin 134 and the pinning-side stripper spring 136 in FIG. 6 is different from the positional relationship shown in FIG. However, the actual positional relationship between the pin-out side pin support spring 132 and the pin-out side support pin 134 and the pin-out side stripper spring 136 is the relationship shown in FIG. 6, and the positional relationship shown in FIG. This is to simplify the illustration.

The maximum length of the pin-out side pin support spring 132 is set to be the same as the maximum length of the above-described hole-out side pin support spring 32. This setting is performed, for example, by adjusting the depth of the pin lead-out upper mold recess 112a.
Since the other structure of the pin take-out side pin support spring 132 is a structure corresponding to the above-described hole-out side pin support spring 32, the description thereof is omitted.

Since the configuration of the pin take-out side support pin 134 is a configuration corresponding to the above-described hole side support pin 34, the description thereof is omitted.
The elastic force of the pinning-side stripper spring 136 is set to a value weaker than the elastic force of the pinning-side pin support spring 132.

  The maximum length of the pinning-side stripper spring 136 is set to be the same as the maximum length of the pinning-side pin support spring 132. This setting is performed, for example, by adjusting the depth of the pin exit side upper mold recess 112a and the length of the pin exit side stripper shaft 146. The pin lead-out side upper mold recess 112a corresponds to the above-described hole punching side upper mold recess 12a, and the pin lead-out side stripper shaft 146 corresponds to the hole punching-side stripper shaft 46 described above.

  Further, the maximum length of the pin-out side stripper spring 136 is set to be the same as the maximum length of the above-described hole-extracting side stripper spring 36. This setting is performed, for example, by adjusting the length of the pin exit side stripper shaft 146.

Accordingly, the maximum lengths of the hole-out side pin support spring 32, the pin-out side pin support spring 132, the pin-out side stripper spring 136, and the hole-out side stripper spring 36 are all set to the same length.
The other configuration of the pin lead-out side stripper spring 136 is a configuration corresponding to the above-described hole-extracting side stripper spring 36, and thus the description thereof is omitted.

(Configuration of the stock line pin on the pin exit side)
As shown in FIG. 6, the pinning-side processing block 100 includes pinning-side stock line pins 156. The pin stock side stock line pin 156 has the same structure as the above-described hole stock side pin 56 except that the pin stock line pin small diameter portion 156a is inserted into the pin stock line pin through hole 130b. Since it is a corresponding structure, its description is omitted. The pin-out side line pin through-hole 130b is a through-hole penetrating the pin-out side die plate 130 in the vertical direction.

(Detailed configuration of the plate lock mechanism on the pin exit side)
The detailed configuration of the pin take-out side plate locking mechanism 138 will be described below with reference to FIGS. 1 and 6 and FIGS.
FIG. 7 is an enlarged view of a range surrounded by a circle VII in FIG. 1, and is a diagram showing a detailed configuration of the pin take-out side plate lock mechanism 138. 8 is a view taken along the line VIII of FIG. 7, and FIG. 9 is a view taken along the line IX of FIG. Note that in FIGS. 7 to 9, a part thereof is shown for the sake of explanation.

  As shown in FIGS. 7 to 9, the pinning-side plate locking mechanism 138 includes a pinning-side upper cam driver 162, a pinning-side lower cam driver 164, a pinning-side cam slider 166, and a pinning-out side. A side cam guide block 168 is provided.

The pin take-up side upper cam driver 162 is formed of a pin take-out side upper cam main body 162a and a pin take-out side lower extending portion 162b.
The pin take-up side upper cam body 162a is positioned by the pin take-out side upper cam driver positioning knock pin 170, and the side surface of the pin take-out side punch plate 118 using the pin take-out side upper cam driver fixing screw 172. Is attached. The side surfaces of the pin take-out side punch plate 118 are the left side surface and the right side surface in FIG.

The pinning-side lower extension 162b extends below the pinning-side punch plate 118.
The other configuration of the pin lead-out side upper cam driver 162 is a configuration corresponding to the above-described hole punching side upper cam driver 62, and thus the description thereof is omitted. Similarly, the configuration of the pin lead-out side upper cam driver projection 174 is also a configuration corresponding to the above-described holed side upper cam driver projection 74, and therefore the description thereof is omitted.

  The configuration of the pin lead-out lower mold driver 164 corresponds to the above-described hole punching-side lower cam driver 64, and thus the description thereof is omitted. Similarly, the configuration of the pin lead-out side lower cam driver protrusion 180 is also a configuration corresponding to the above-described hole punching side lower cam driver protrusion 80, and a description thereof will be omitted.

The pin take-out side cam slider 166 is held by a pin take-out side cam guide block 168, and the side surface of the pin take-out side stripper plate 122 (on the left and right sides in FIG. 1) via the pin take-out side cam guide block 168. Surface).
The other configuration of the pinning-side cam slider 166 is a configuration corresponding to the above-described punching-side cam slider 66, and thus the description thereof is omitted.

Further, the configuration of the pin take-out side cam slider protruding portion 182 is a configuration corresponding to the above-described holed side cam slider protruding portion 82, and therefore, the description thereof is omitted.
The pinning-side cam guide block 168 is attached to the side surface of the pinning-side stripper plate 122 using a pinning-side cam guide block fixing screw 188 while being positioned by the pinning-side cam guide block positioning knock pin 186. Yes.
The other configuration of the pin lead-out side cam guide block 168 is a configuration corresponding to the above-described hole-extracting side cam guide block 68, and thus description thereof is omitted.

(Pin-out cam slider holding structure with pin-out cam guide block)
The holding structure of the pinning side cam slider 166 by the pinning side cam guide block 168 is the same as the holding structure of the hole punching side cam slider 66 by the hole punching side cam guide block 68, and therefore the description thereof is omitted.

(Operation)
Next, with reference to FIGS. 1 to 9, the operation of the punching pinning die 1 will be described with reference to FIGS. 10 to 25. FIG.
The punching pin simultaneous processing performed using the punching pin punching die 1 having the above-described configuration includes a material holding step, a hollow pin forming step that is a subsequent step of the material holding step, and a hollow pin forming step. It has a hole punching process that is a process. In addition to this, the simultaneous punching pin drilling process includes a punching punch extraction process that is a subsequent process of the punching process, a hollow pin extracting process that is a subsequent process of the punching punch extraction process, and a post process of the hollow pin extracting process. A material removal step.

(Operation in material holding process)
Hereinafter, the operation of the punching pin die 1 in the material holding step will be described.
The material holding process is a process of holding the conveyed metal plate 2 in the hole punching side processing block 10 between the hole punching side stripper plate 22 and the hole punching side die plate 30. The same applies to the configuration corresponding to the punching side processing block 10 of the pinning side processing block 100.

  The material holding step is performed from a state in which the upper die set 12 on the punching side is raised and there is a gap between the punching side stripper plate 22 and the punching side die plate 30 (FIG. 1). reference). The same applies to the configuration corresponding to the punching side processing block 10 of the pinning side processing block 100.

In addition to this, in the material holding step, the hole-side pin support spring 32 extends to the maximum length, and there is a gap between the hole-side punch plate 18 and the hole-side stripper backing plate 20. Perform (see FIG. 1). The same applies to the configuration corresponding to the punching side processing block 10 of the pinning side processing block 100.
Further, the material holding step is performed from a state in which the hole-stripping side stripper spring 36 is extended to the maximum length and a gap is left between the hole-punching upper mold backing plate 14 and the hole-punching side punch backing plate 16. (See FIG. 1). The same applies to the configuration corresponding to the punching side processing block 10 of the pinning side processing block 100.

(Operation in the drilling side processing block 10 in the material holding step)
First, with reference to FIGS. 1 to 9, the operation of the punching side processing block 10 among the operations of the punching pinning die 1 in the material holding process will be described with reference to FIGS. 10 and 11. To do.

  FIG. 10 is a diagram showing a state of the punching pin out die 1 and the metal plate 2 in the material holding step. In FIG. 10, as in FIG. 1, detailed configurations of the hole-extracting side plate locking mechanism 38 and the pinning side plate locking mechanism 138 are omitted. FIG. 11 is a view taken along the line XI in FIG. 10 and shows a detailed operation of the hole-piercing plate locking mechanism 38.

  As shown in FIGS. 10 and 11, in the punching side processing block 10, in the material holding step, the punching side upper die set 12 is lowered and the conveyed metal plate 2 is transferred to the punching side stripper. The plate 22 is pressed from above. Then, the metal plate 2 is sandwiched and held from above and below by the perforated side stripper plate 22 and the perforated side die plate 30. Thereby, it is possible to improve the accuracy in the hole punching process by suppressing the displacement of the position where the through hole is formed with respect to the metal plate 2.

At this time, the amount by which the perforated side upper die set 12 is lowered is the amount maintained in a state where the perforated side pin support spring 32 and the perforated side stripper spring 36 are extended to the maximum length. Thereby, the hole punching side punch 24 does not protrude from the lower surface of the hole punching side stripper plate 22.
Therefore, in the punching side processing block 10, the punching side punch 24 does not apply force to the metal plate 2 with respect to the metal plate 2 in the material holding step. Further, in the material holding step, the perforated side upper cam inclined surface 74a and the perforated side slider inclined surface 82a are not in surface contact with each other.

  When the metal plate 2 is sandwiched and held in the vertical direction by the punching side stripper plate 22 and the punching side die plate 30, the operation of the punching pinning die 1 in the punching side processing block 10 is the material holding. Transition from the process to the hollow pin forming process.

(Operation in the pin exit side processing block 100 in the material holding step)
First, with reference to FIG. 1 to FIG. 10, operations in the pinning side processing block 100 among the operations of the punching pinning processing mold 1 in the material holding step will be described. In addition, the following description is described centering on a different part from the operation | movement in the punching side processing block 10 mentioned above, and the same content may be abbreviate | omitted.

12 is a view taken in the direction of arrow XII in FIG. 10 and shows a detailed operation of the pin take-out side plate locking mechanism 138.
As shown in FIGS. 10 and 12, in the pinning side processing block 100, in the material holding step, the pinning side stripper plate 122 and the pinning side die plate 130 hold the metal plate 2 sandwiched from above and below. . Thereby, it is possible to improve the accuracy in pinning processing by suppressing the displacement of the position where the hollow pin is formed with respect to the metal plate 2.

At this time, the amount by which the pin take-out side upper die set 112 is lowered is an amount that the pin take-out side pin support spring 132 and the pin take-out side stripper spring 136 are maintained in the state of being extended to the maximum length. As a result, the pinning-side punch 124 does not protrude from the lower surface of the pinning-side stripper plate 122.
Accordingly, in the pinning-side processing block 100, the pinning-side punch 124 and the knockout 202 are not applying a force that deforms the metal plate 2 to the metal plate 2 in the material holding step.

  When the metal plate 2 is held in the vertical direction by the pinning-side stripper plate 122 and the pinning-side die plate 130, the operation of the punching pinning die 1 in the pinning-side processing block 100 is the material holding. Transition from the process to the hollow pin forming process.

(Operation in the hollow pin forming process)
Hereinafter, operation | movement of the metal mold | die 1 for hole punching processing in a hollow pin formation process is demonstrated.
The hollow pin forming step is a step of forming a hollow pin on the metal plate 2 held between the pin output side stripper plate 122 and the pin output side die plate 130 in the material holding step in the pin output side processing block 100. is there.

  In addition to this, the hollow pin forming step is a step of connecting the pin unloading side punch 124 and the pin unloading side stripper plate 122 together so as to move upward in the pin unloading side processing block 100.

(Operation in the drilling side processing block 10 in the hollow pin forming step)
First, referring to FIG. 1 to FIG. 9, using FIG. 13 and FIG. 14, among the operations of the hole punching die 1 in the hollow pin forming step, the operation in the hole punching side processing block 10. explain.

  FIG. 13 is a view showing a state of the punching pin punching die 1 and the metal plate 2 in the hollow pin forming step. In FIG. 13, as in FIG. 1, detailed configurations of the hole-extracting side plate locking mechanism 38 and the pinning side plate locking mechanism 138 are omitted. FIG. 14 is a view taken along the line XIV in FIG. 13 and shows the detailed operation of the hole-piercing side plate locking mechanism 38.

As shown in FIGS. 13 and 14, in the hole punching side processing block 10, in the hollow pin forming step, the hole punching side upper die set 12 is further lowered from the position lowered in the material holding step.
Here, as described above, the elastic force of the hole side stripper spring 36 is set to a value stronger than the elastic force of the hole side pin support spring 32.

For this reason, when the punching side upper die set 12 is further lowered from the position where it is lowered in the material holding step, the punching side pin support spring is in a state where the punching side stripper spring 36 is extended to the maximum length. 32 contracts.
When the punching side pin support spring 32 contracts while the punching side stripper spring 36 is extended to the maximum length, the punching side upper mold backing plate 14 is lowered as the punching side upper die set 12 is lowered. Then, it comes into contact with the punched side punch backing plate 16.

At this time, as the punching side upper mold backing plate 14 is lowered, the punching side upper mold cam driver 62 is lowered, and the punching side upper mold cam inclined surface 74a presses the punching side slider inclined surface 82a. .
When the perforated side upper cam inclined surface 74a presses the perforated side slider inclined surface 82a, the pressing force by the perforated side upper cam driver 62 is applied to the perforated side cam slider 66, and the perforated side cam slider. The operating spring 94 contracts. When the spring 94 for operating the punching side cam slider contracts, the punching side cam slider 66 pressed by the punching side upper cam driver 62 moves away from the punching side upper cam driver 62 (left in FIG. 14). Direction).

  When the perforated side upper cam driver 62 moves down and the perforated side cam slider 66 moves away from the perforated side upper cam driver 62, the perforated side upper mold inclined surface 74a and the perforated side upper mold The cam chamfer 74c is lowered. Then, the lowered punching side upper cam inclined surface 74a and the punched side upper cam chamfered portion 74c move below the punched side slider inclined surface 82a. As a result, the perforated side upper cam inclined surface 74a and the perforated side upper cam chamfered portion 74c are arranged in the order of the perforated side slider chamfered portion 82c and the perforated side slider horizontal surface 82b in this order. It moves downward from the hole side slider horizontal surface 82b.

  When the perforated side upper cam inclined surface 74a and the perforated side upper cam chamfer 74c move below the perforated side slider horizontal surface 82b, the perforated side is added to the perforated side cam slider 66. The pressing force by the upper die cam driver 62 disappears. Then, the holed cam slider operating spring 94 that has contracted extends to the maximum length.

  When the spring 94 for operating the punching side cam slider is extended to the maximum length, the punching side cam slider 66 moves in a direction approaching the punching side upper cam driver 62 (rightward in FIG. 14). Then, the perforated side cam slider projecting portion 82 moves above the perforated side upper cam driver projecting portion 74.

  When the perforated side cam slider projecting portion 82 moves above the perforated side upper cam driver projecting portion 74, as shown in FIG. 14, the perforated side slider horizontal surface 82b and the perforated side upper cam horizontal surface 74b The holes are opposed to each other in the vertical direction, and the holed side upper cam driver 62 and the holed side cam slider 66 are engaged with each other. The state in which the perforated side upper cam driver 62 and the perforated side cam slider 66 are engaged with each other so that the perforated side slider horizontal surface 82b and the perforated side upper cam horizontal surface 74b face each other in the vertical direction. 82b may be in contact with the upper punch horizontal surface 74b, or may be spaced apart.

  When the perforated side upper die cam driver 62 and the perforated side cam slider 66 are engaged with each other, the perforated side upper die backing plate 14 and the perforated side punch plate 18 are coupled so as to move upward.

  As described above, the hole punching side plate lock mechanism 38 connects the hole punching side upper mold backing plate 14 and the hole punching side punch plate 18 together so as to move upward. As will be described later, this connection is achieved by the pin take-out side small punch portion 124b projecting downward from the pin take-out side second punch insertion hole 122a and the metal plate 2 disposed on the pin take-out side die plate 130 on the pin take-out side. This is performed in a state of being pushed into the second lower mold insertion hole 130a.

Here, in the state in which the hole punching side plate locking mechanism 38 connects the hole punching side upper mold backing plate 14 and the hole punching side punch plate 18, the hole punching side pin support spring 32 contracts and the hole punching side stripper. The spring 36 extends to the maximum length.
For this reason, the perforated side plate locking mechanism 38 and the perforated side stripper spring 36 connect the perforated side upper die set 12 and the perforated side stripper plate 22 so as to rise together. Forming mechanism. The punching side upper die set 12 and the punching side stripper plate 22 are connected by inserting the metal plate 2 having the pinning side punch 124 disposed on the pining side die plate 130 into the pinning side second lower die. This is performed while being pushed into the hole 130a.

  When the perforated side upper die set 12 and the perforated side punch plate 18 are connected so as to move upward, the operation of the perforated pin out processing mold 1 in the perforated side processing block 10 is hollow. The process proceeds from the pin forming process to the hole punching process.

(Operation in the pin exit side processing block 100 in the hollow pin forming step)
First, referring to FIG. 1 to FIG. 9 and FIG. 13, with reference to FIG. 15, among the operations of the punched pinning die 1 in the hollow pin forming process, the operations in the pinning side processing block 100. explain. In addition, the following description is described centering on a different part from the operation | movement in the punching side processing block 10 mentioned above, and the same content may be abbreviate | omitted.

FIG. 15 is a view taken along the line XV in FIG. 13 and shows a detailed operation of the pin take-out side plate locking mechanism 138.
As shown in FIGS. 13 and 15, in the pinning-side processing block 100, in the hollow pin forming step, the pinning-side upper die set 112 is further lowered from the position lowered in the material holding step.

Here, as described above, the elastic force of the pinning-side stripper spring 136 is set to a value weaker than the elastic force of the pinning-side pin support spring 132.
Therefore, when the pin take-up side upper die set 112 is further lowered from the lowered position in the material holding step, the pin take-out side stripper spring is in a state where the pin take-out side pin support spring 132 is extended to the maximum length. 136 contracts.

When the pinning-side stripper spring 136 contracts with the pinning-side pin support spring 132 extended to the maximum length, the pinning-side punch plate 118 is lowered as the pinning-side upper die set 112 is lowered. , It comes into contact with the pin exit side stripper backing plate 120.
When the pinning-side punch plate 118 is lowered so as to come into contact with the pinning-side stripper backing plate 120, the pinning-side small-diameter punch portion 124b protrudes downward from the pinning-side second punch insertion hole 122a. And it protrudes from the lower surface of the pin exit side stripper plate 122. When the pinning-side small-diameter punch portion 124b protrudes from the lower surface of the pinning-side stripper plate 122, the pinning-side punch 124 applies a pressing force to the upper surface of the metal plate 2 disposed on the pinning-side die plate 130. .

At this time, the pinning-side punch 124 that applies a pressing force to the upper surface of the metal plate 2 moves the metal plate 2 disposed on the pinning-side die plate 130 upward into the pinning-side second lower mold insertion hole 130a. Push in.
Further, the knockout 202 facing each other with the metal plate 2 interposed therebetween is pressed downward together with the metal plate 2 by the pressing force applied to the upper surface of the metal plate 2 by the pinning side punch 124. Therefore, the knockout 202 compresses the knockout spring 200 from above while descending in the pin outlet side second lower mold insertion hole 130a.

At this time, since the compressed knockout spring 200 contracts (shrinks) in a state of having an elastic force, the knockout 202 moves upward on the metal plate 2 while descending in the pin outlet side second lower die insertion hole 130a. Apply back pressure to.
When the pin die side upper die set 112 is further lowered from the lowered position in the material holding step, the lower surface of the metal plate 2 is placed on the metal plate 2 sandwiched between the pin pin punch 124 and the knockout 202 that are lowered. A hollow pin P protruding downward is formed.

Further, as described above, when the pinning side punch plate 118 is lowered, the pinning side upper cam driver 162 and the pinning side cam slider 166 are engaged with each other by the same procedure as the operation in the hole punching side machining block 10 described above. .
When the pinning-side upper cam driver 162 and the pinning-side cam slider 166 mesh with each other, the pinning-side punch plate 118 and the pinning-side stripper plate 122 are coupled so as to move upward. As a result, the pinning-side punch 124 and the pinning-side stripper plate 122 are coupled so as to move upward.

  As described above, the pinning-side plate locking mechanism 138 connects the pinning-side punch 124 and the pinning-side stripper plate 122 so as to move together. In this connection, the pin take-out side second punch insertion hole 122a protrudes downward from the pin take-out side small punch part 124b and the pin take-out side second lower die is inserted into the pin plate-side die plate 130. This is performed while being pushed into the hole 130a.

Here, in a state in which the pinning-side plate locking mechanism 138 connects the pinning-side upper mold backing plate 114 and the pinning-side punch plate 118, the pinning-side stripper spring 136 contracts and the pinning-side pin support Spring 132 extends to its maximum length.
Therefore, the pinning-side plate locking mechanism 138 and the pinning-side pin support spring 132 connect the pinning-side upper die set 112 and the pinning-side stripper plate 122 so as to rise together. A coupling mechanism is formed. The pinning side upper die set 112 and the pinning side stripper plate 122 are connected by inserting the metal plate 2 having the pinning side punch 124 disposed on the pinning side die plate 130 into the pinning side second lower die. This is performed while being pushed into the hole 130a.

  When the pin-out side upper die set 112 and the pin-out side stripper plate 122 are coupled so as to move upward, the operation of the punching-out pin-out processing die 1 in the pin-out side processing block 100 is a hollow pin. The process proceeds from the forming process to the hole punching process.

(Operation in drilling process)
Hereinafter, the operation of the hole punching die 1 in the hole punching process will be described.
In the hole punching process block 10, the thickness direction of the metal plate 2 with respect to the metal plate 2 held between the hole punching side stripper plate 22 and the hole punching side die plate 30 in the hollow pin forming process. This is a step of forming a through-hole penetrating through.

(Operation in the punching side processing block 10 in the punching process)
First, with reference to FIG. 1 to FIG. 9, the operation in the hole punching side processing block 10 among the operations of the hole punching die 1 in the hole punching process will be described with reference to FIGS. 16 and 17. To do.

  FIG. 16 is a view showing a state of the punching pinning die 1 and the metal plate 2 in the punching step. In FIG. 16, as in FIG. 1, the detailed configurations of the hole-extracting side plate locking mechanism 38 and the pinning side plate locking mechanism 138 are omitted. FIG. 17 is a view taken in the direction of arrow XVII in FIG. 16 and shows a detailed operation of the hole-piercing plate locking mechanism 38.

As shown in FIGS. 16 and 17, in the hole punching side processing block 10, in the hole punching step, the hole punching side upper die set 12 is further lowered from the position lowered in the hollow pin forming step.
Here, as described above, in the hollow pin forming step, the hole side pin support spring 32 is contracted in a state where the hole side stripper spring 36 is extended to the maximum length.

  For this reason, when the punched-side upper die set 12 is further lowered from the position where it is lowered in the hollow pin forming step, the punched-side stripper spring 36 extending to the maximum length contracts. Then, as the punching side stripper spring 36 contracts and the punching side upper die set 12 descends, the punching side punch plate 18 descends and contacts the punching side stripper backing plate 20. At this time, the vertical position of the punching-side upper die set 12 is the lowest position (bottom dead center), and all the plates included in the punching-side processing block 10 are in contact with each other.

At this time, as the hole punching side punch plate 18 is lowered, the hole punching side small diameter punch portion 24 b protrudes downward from the hole punching side second punch insertion hole 22 a and protrudes from the lower surface of the hole punching side stripper plate 22. .
When the punching side small diameter punch portion 24 b protrudes from the lower surface of the punching side stripper plate 22, the punching side punch 24 applies a pressing force to the upper surface of the metal plate 2 disposed on the punching side die plate 30. .

At this time, the punching side punch 24 for applying a pressing force to the upper surface of the metal plate 2, specifically, the lower end side of the punching side small-diameter punch portion 24 b penetrates the metal plate 2 and is below the punching side. It penetrates into the mold punch insertion hole 42.
Therefore, the punching side punch 24 punches the metal plate 2 arranged on the punching side die plate 30 from the upper side to the lower side, and forms a through hole penetrating the metal plate 2 in the thickness direction of the metal plate 2. To do. The punched pieces formed when the through holes are formed in the metal plate 2 are the punched side lower die punch insertion hole 42, the punched side second lower die through hole 28a, and the punched side first lower die through hole. The inside of 26a falls in order, and is discharged out of the punching side processing block 10.

  When a through-hole is formed in the metal plate 2 by the hole punching side punch 24, the operation of the hole punching pin forming die 1 in the hole punching side processing block 10 shifts from the hole punching step to the hole punching punch extracting step.

(Operation in the pin exit side processing block 100 in the hole punching process)
First, with reference to FIG. 1 to FIG. 9 and FIG. 16, the operation in the pinning side processing block 100 among the operations of the hole punching die 1 in the hole punching process will be described using FIG. 18. To do. In addition, the following description is described centering on a different part from the operation | movement in the punching side processing block 10 mentioned above, and the same content may be abbreviate | omitted.

18 is a view taken in the direction of arrow XVIII in FIG. 16 and shows a detailed operation of the pin take-out side plate locking mechanism 138.
As shown in FIGS. 16 and 18, in the pinning-side processing block 100, in the hole punching process, the pinning-side upper die set 112 is further lowered from the position lowered in the hollow pin forming process.

Here, as described above, in the hollow pin forming step, the pinning-side stripper spring 136 is contracted while the pinning-side pin support spring 132 is extended to the maximum length.
For this reason, when the pin take-out side upper die set 112 is further lowered from the position where it is lowered in the hollow pin forming step, the pin take-out side pin support spring 132 that has been extended to the maximum length contracts. Then, as the pinning-side pin support spring 132 contracts and the pinning-side upper die set 112 descends, the pinning-side upper die backing plate 114 descends and contacts the pinning-side punch backing plate 116. At this time, the vertical position of the pin die side upper die set 112 is the lowest position (bottom dead center), and all the plates included in the pin lead side processing block 100 are in contact with each other.

  When the pinning side upper die backing plate 114 is lowered and comes into contact with the pinning side punch backing plate 116, the operation of the punching pinning die 1 in the pinning side processing block 100 starts from the hole punching process. Move to punching punching process.

(Operation in punching punch extraction process)
Hereinafter, the operation of the hole punching die 1 in the hole punching step will be described.
The punching punch extraction step is a step of extracting the punching side punch 24 that has penetrated the metal plate 2 in the punching process block 10 from the through hole formed in the metal plate 2 in the punching side processing block 10.

(Operation in the punching side processing block 10 in the punching punch extraction process)
First, referring to FIG. 1 to FIG. 9, using FIG. 19 and FIG. 20, among the operations of the punching pin punching die 1 in the punching punch extracting step, the operations in the punching side processing block 10. Will be described.

  FIG. 19 is a diagram showing a state of the punching pin punching die 1 and the metal plate 2 in the punching punching step. In FIG. 19, as in FIG. 1, the detailed configuration of the hole-extracting side plate locking mechanism 38 and the pinning side plate locking mechanism 138 is omitted. FIG. 20 is a view taken in the direction of the arrow XIX in FIG. 19 and shows a detailed operation of the hole-piercing plate locking mechanism 38. Further, FIG. 19 shows a punched piece 2a formed when the through hole H is formed in the metal plate 2 in the above-described hole punching step.

As shown in FIGS. 19 and 20, in the punching side processing block 10, in the punching punch extracting step, the punching side upper die set 12 is moved from a position (bottom dead center) lowered in the punching step. Raise.
Here, as described above, in the hollow pin forming process, the punching side upper die backing plate 14 and the punching side punch plate 18 are connected together by the punching side plate locking mechanism 38 so as to move upward. Yes.

For this reason, when the perforated side upper die set 12 is raised, the perforated side upper die backing plate 14, the perforated side punch backing plate 16, and the perforated side punch are moved along with the elevation of the perforated side upper die set 12. The plate 18 rises.
Specifically, in the hollow pin forming step described above, the hole-drilling side slider horizontal surface 82b and the hole-drilling side upper cam horizontal surface 74b face each other in the vertical direction. For this reason, when the perforated side upper mold backing plate 14 rises and the perforated side upper cam driver 62 ascends, the perforated side upper cam horizontal plane 74b is moved upward from the perforated side upper cam horizontal plane 74b. A pressing force is applied.

When an upward pressing force is applied to the punching side slider horizontal surface 82b, the punching side cam slider 66 is raised by this pressing force, and the punching side punch plate 18 is lifted.
When the punching side punch plate 18 is raised, the contracted punching side stripper spring 36 is extended to press the punching side stripper plate 22 from above. For this reason, the punching side punch plate 18 is lifted in a state where the punching side stripper plate 22 is pressed against the upper surface of the metal plate 2 by the extending punching side stripper spring 36.

  Here, as described above, the bottom surface of the punched-side large-diameter punch portion 24a faces the bottom surface of the punched-side large-diameter arrangement portion 40a. For this reason, when the hole punching side punch plate 18 is raised, the hole punching side punch 24 is lifted together with the hole punching side punch plate 18 while being held by the hole punching side punch plate 18.

  When the hole punching side punch 24 rises in a state where the hole punching side stripper plate 22 is pressed against the upper surface of the metal plate 2, the hole punching side small diameter punch portion 24b that has entered the hole punching side lower punch insertion hole 42 is formed. The lower end of the upper part is pulled out upward from the punching side lower die punch insertion hole 42. Further, the lower end of the punching side small-diameter punch portion 24 b that has slipped upward from the punching side lower punch insertion hole 42 slips upward from the through hole H formed in the metal plate 2. And the lower end of the punching side small diameter punch part 24b moves into the punching side second punch insertion hole 22a. For this reason, after the punching side punch 24 is extracted from the through hole H formed in the metal plate 2, the punching side punch 24 rises to a position where it does not protrude from the lower surface of the punching side stripper plate 22.

Here, in the punching punch extraction step, the punching side upper die set 12 is raised until the punching side stripper spring 36 extends to the maximum length.
When the punching side punch 24 is extracted from the through hole H formed in the metal plate 2, the operation of the punching pin punching die 1 in the punching side processing block 10 is performed from the punching punch extracting step. Move to extraction process.

(Operation in the processing block 100 on the pin take-out side in the punching punch extraction process)
Next, referring to FIG. 1 to FIG. 9 and FIG. 19, in FIG. 21, in the operation of the punching pinning processing die 1 in the punching punching process, in the punching side processing block 100. The operation will be described. In addition, the following description is described centering on a different part from the operation | movement in the punching side processing block 10 mentioned above, and the same content may be abbreviate | omitted.

FIG. 21 is a view taken in the direction of the arrow XXI in FIG. 19 and shows a detailed operation of the pin take-out side plate locking mechanism 138.
As shown in FIGS. 19 and 21, in the pinning side machining block 100, in the punching punch extraction process, the pinning side upper die set 112 is moved from a position (bottom dead center) lowered in the hole punching process. Raise.

  Here, as described above, in the hollow pin forming step, the pinning-side punch plate 118 and the pinning-side stripper plate 122 are coupled together by the pinning-side plate locking mechanism 138 so as to move upward. Therefore, the pinning-side stripper spring 136 sandwiched between the pinning-side punch plate 118 and the pinning-side stripper plate 122 is contracted even when the pinning-side upper die set 112 is raised. Is held in.

Therefore, when the pin take-up side upper die set 112 is lifted from the lowered position in the hole punching step, the pin take-out side pin support spring 132 and the pin take-out side stripper spring 136 out of the contracting pins Only the support spring 132 extends.
When the pinning-side pin support spring 132 is extended, the pinning-side punch backing plate 116 is pressed downward by the pinning-side pin support spring 132. For this reason, the pin take-up side upper die plate 114 is configured so that the pin take-out side stripper plate 122 is pressed against the upper surface of the metal plate 2 by the extending pin take-out side pin support spring 132. Rise with 112. As a result, the pin exit side upper mold backing plate 114 is separated from the pin exit side punch backing plate 116.

Here, in the hole punching punch extraction step, the pin output side upper die set 112 is raised until the pin output side pin support spring 132 extends to the maximum length.
When the pinning-side upper die backing plate 114 is separated from the pinning-side punch backing plate 116, the operation of the punching-pinning processing die 1 in the pinning-side processing block 100 is performed from the punching punching process to the hollow pin. Move to extraction process.

(Operation in the hollow pin extraction process)
Hereinafter, the operation of the punching pin extracting die 1 in the hollow pin extracting step will be described.
The hollow pin extracting step is a step of raising the metal plate 2 in which the through hole H is formed in the hole punching side processing block 10 from the upper surface of the hole punching side die plate 30.

Further, in the hollow pin extracting step, the metal plate 2 on which the hollow pin P is formed is raised from the upper surface of the pin output side die plate 130 in the pin output side processing block 100, so that the hollow pin P is moved to the pin output side second. This is a step of extracting from the lower mold insertion hole 130a.
Further, in the hollow pin extracting step, when the metal plate 2 in which the through hole H and the hollow pin P are formed is raised, a hole stripper stripper plate is formed between the hole punching side processing block 10 and the pin pulling side processing block 100. 22 and the height of the pin strip side stripper plate 122 are approximated.

(Operation in the drilling side processing block 10 in the hollow pin extraction process)
First, referring to FIG. 1 to FIG. 9, with reference to FIG. 22 and FIG. 23, among the operations of the hole punching die 1 in the hollow pin extracting step, the operations in the hole punching side processing block 10. explain.

  FIG. 22 is a view showing a state of the punching pin extracting die 1 and the metal plate 2 in the hollow pin extracting step. In FIG. 22, as in FIG. 1, detailed configurations of the hole-piercing side plate locking mechanism 38 and the pin take-out side plate locking mechanism 138 are omitted. FIG. 23 is a view taken along the line XXIII in FIG. 22 and shows a detailed operation of the hole side plate locking mechanism 38. Further, in FIG. 22, similarly to FIG. 19, a punched piece 2 a formed when the through hole H is formed in the metal plate 2 in the above-described punching step is shown.

As shown in FIGS. 22 and 23, in the punching side processing block 10, in the hollow pin extracting step, the punching side upper die set 12 is further raised from the position raised in the punching punch extracting step. .
At this time, in the punching punch extraction process described above, the punching side stripper spring 36 extends to the maximum length. For this reason, when the punching side upper die set 12 is further lifted from the position where it has been lifted in the punching punch extraction step, the punching side punch plate 18 is lifted, and the punching side stripper shaft 46 makes the hole The removal side stripper plate 22 is pulled upward.

Here, the perforated side stock line pin 56 holding the metal plate 2 is urged upward by a perforated side line pin spring 58 that can be expanded and contracted in the vertical direction.
For this reason, when the punching side upper die set 12 is lifted in a state where the punching side stripper spring 36 is extended to the maximum length, the metal plate 2 contacts the lower surface of the punching side stripper plate 22 along with the rise. It rises in the state. The metal plate 2 that rises in contact with the lower surface of the hole punching side stripper plate 22 moves away from the upper surface of the hole punching side die plate 30.

Further, when the punching side upper die set 12 is lifted in a state where the punching side stripper spring 36 is extended to the maximum length, the punching side processing block 10 is moved up and down in the punching punch extracting process along with this rise. Rise while maintaining the direction length.
For this reason, in the hollow pin extracting step, the metal plate 2 is raised in the hole punching side processing block 10 while maintaining the vertical length in the hole punching punch extracting step.

  When the metal plate 2 is lifted from the upper surface of the hole punching die plate 30, the operation of the hole punching die 1 in the hole punching processing block 10 shifts from the hollow pin punching process to the material removing process. .

(Operation in the pin extraction side processing block 100 in the hollow pin extraction process)
Next, referring to FIG. 1 to FIG. 9 and FIG. 22, using FIG. 24, among the operations of the punching pinning die 1 in the hollow pin extracting step, the operations in the pinning side processing block 100. Will be described. In addition, the following description is described centering on a different part from the operation | movement in the punching side processing block 10 mentioned above, and the same content may be abbreviate | omitted.

FIG. 24 is a view taken along the line XXIV in FIG. 22 and shows the detailed operation of the pin take-out side plate locking mechanism 138.
As shown in FIGS. 22 and 24, in the pinning-side processing block 100, in the hollow pin extracting step, the pinning-side upper die set 112 is further raised from the position raised in the hole punching punch extracting step. .

  At this time, in the punching punch extraction step described above, the pin output side pin support spring 132 extends to the maximum length. For this reason, when the pin take-up side upper die set 112 is further raised from the position where it has been raised in the punching punch extracting step, the pin take-out side upper die backing plate 114 is raised, and the pin take-out side pin support spring 132 is raised. As a result, the pin take-out side punch plate 118 is pulled upward.

Here, as described above, in the hollow pin forming step, the pinning-side punch plate 118 and the pinning-side stripper plate 122 are coupled together by the pinning-side plate locking mechanism 138 so as to move upward.
Therefore, when the pinning-side upper die set 112 is raised, the pinning-side punch plate 118, the pinning-side stripper backing plate 120, and the pinning-side stripper plate 122 are moved along with the raising of the pinning-side upper die set 112. Rises.

  Specifically, in the hollow pin forming process described above, the pinning-side slider horizontal surface 182b and the pinning-side upper cam horizontal surface 174b face each other in the vertical direction. For this reason, when the pinning-side upper mold backing plate 114 rises and the pinning-side upper mold cam driver 162 rises, the pinning-side upper cam horizontal plane 174b moves upward from the pinning-side slider horizontal plane 182b. A pressing force is applied.

When an upward pressing force is applied to the pinning-side slider horizontal surface 182b, the pinning-side cam slider 166 is raised by this pressing force, and the pinning-side stripper plate 122 is raised.
Further, as described above, the lower surface of the pinning-side large-diameter punch portion 124a faces the bottom surface of the pinning-side large-diameter arrangement portion 140a. Therefore, when the pinning-side punch plate 118 rises, the pinning-side punch 124 rises together with the pinning-side punch plate 118 and the pinning-side stripper plate 122 while being held by the pinning-side punch plate 118.

  Here, on the outer peripheral surface of the pin take-out side punch 124 for pushing the metal plate 2 into the pin take-out side second lower mold insertion hole 130a, from the portion of the metal plate 2 where the hollow pin P is formed, Stress toward the central axis side of the punch 124 is applied. The stress toward the central axis side of the pin take-out punch 124 is generated by deformation of the metal plate 2 that occurs when the hollow pin P is formed.

For this reason, when the pinning-side punch 124 is raised together with the pinning-side punch plate 118 and the pinning-side stripper plate 122, the metal plate 2 is also hollowed in the hollow pin P formed in the hollow pin forming process along with this rise. The pin rises with the pin outlet side punch 124 inserted in the part.
That is, when the pinning-side punch plate 118 and the pinning-side stripper plate 122 are both raised, the pinning-side punch that pushes the metal plate 2 into the pinning-side second lower mold insertion hole 130a along with this rise. 124 also rises.

When the metal plate 2 rises with the pin take-out punch 124 inserted into the hollow portion of the hollow pin P, the contracted knockout spring 200 expands (extends) with the rise of the pin take-out punch 124 and is restored to its original position. And the knockout 202 rises.
The knockout 202 is raised in a state where the pin take-out side punch 124 is inserted into the hollow portion of the hollow pin P. For this reason, the pin take-out side punch 124 inserted into the hollow portion of the hollow pin P generates a reaction force against the stress caused by the back pressure applied to the bottom surface of the hollow pin P from the rising knockout 202. Thus, the hollow formed in a state where the stress due to the back pressure applied from the knockout 202 to the bottom surface of the formed hollow pin P is reduced by the pin take-out side punch 124 pushed into the pin take-out side second lower mold insertion hole 130a. The pin P can be extracted from the pin outlet side second lower mold insertion hole 130a.

Therefore, even if the knockout 202 applies stress due to the back pressure to the metal plate 2, the hollow portion of the hollow pin P is not pinched by the pin outlet side stripper plate 122 and the knockout 202, and the hollow pin P is crushed. It becomes possible to prevent the deformation of the hollow pin P.
Further, the pin take-out side stock line pin 156 holding the metal plate 2 is urged upward by a pin take-out side line pin spring 158 that can be expanded and contracted in the vertical direction.

  For this reason, when the pin take-up side upper die set 112 is raised in a state where the pin take-out side pin support spring 132 is extended to the maximum length, the metal plate 2 is also attached to the lower surface of the pin take-out side stripper plate 122 along with this rise. Ascend in contact. The metal plate 2 that rises in contact with the lower surface of the pinning-side stripper plate 122 moves away from the upper surface of the pinning-side die plate 130.

Further, when the pin take-up side upper die set 112 is raised in a state where the pin take-out side pin support spring 132 is extended to the maximum length, the pin take-out processing block 100 is moved in the punching punch extracting step along with this rise. Rise while maintaining the vertical length.
For this reason, in the hollow pin extracting step, the metal plate 2 is raised in the pin extracting side processing block 100 while maintaining the vertical length in the punching punch extracting step.

  When the metal plate 2 is raised from the upper surface of the pin take-out side die plate 130 and the hollow pin P is extracted from the inside of the pin take-out side second lower mold insertion hole 130a, the hole extraction pin processing in the pin output side processing block 100 is performed. The operation of the mold 1 shifts from the hollow pin extraction process to the material removal process.

(Operation in the hollow pin extraction process)
As described above, in the hollow pin extracting step, the metal plate 2 is raised in the state where the vertical length in the punching punch extracting step is maintained in both the punching side processing block 10 and the pin extracting side processing block 100. ing.

  Specifically, in the hollow pin forming process described above, the hole punching side plate connecting mechanism connects the hole punching side upper die set 12 and the hole punching side stripper plate 22 so as to rise together. In addition, a pinning-side plate connecting mechanism connects the pinning-side upper die set 112 and the pinning-side stripper plate 122 so as to rise together. These couplings are performed in a state where the pinning-side punch 124 pushes the metal plate 2 disposed on the pinning-side die plate 130 into the pinning-side second lower mold insertion hole 130a.

Further, the maximum length of the hole removing side stripper spring 36 and the pin outlet side pin supporting spring 132 is set to be the same.
For this reason, the punching side processing block 10 and the pinning side processing block 100 have the same vertical length in the punching punch extraction process.
Therefore, in the hollow pin extraction step, when the hollow pin P is extracted from the pin extraction side second lower mold insertion hole 130a, that is, when the hole extraction side stripper plate 22 and the pin extraction side stripper plate 122 are raised, The upper and lower positions of the lower surface of the side stripper plate 22 and the lower surface of the pin lead-out side stripper plate 122 are held.

Thereby, in a hollow pin extraction process, between two blocks (10 and 100) of different types of processing, the metal plate 2 after processing (hole punching processing and pinning processing) is transferred to the die plate (30 and 130). The timing of raising from the upper surface is approximated.
Therefore, it is possible to suppress a difference occurring in the vertical position of the metal plate 2 between two blocks of different processing types, and to reduce the possibility of deformation of the metal plate 2 between the two blocks. It becomes possible.

As described above, when the hollow pin P is pulled out from the second pin insertion side 130a on the pin pull-out side, the hole-extracting plate connecting mechanism and the pin pull-out side plate connecting mechanism A plate height holding mechanism that holds the vertical position of the lower surface of the stripper plate 122 is formed.
That is, when the hollow pin P is extracted from the pin outlet side second lower mold insertion hole 130a, the lower surface of the hole punching side stripper plate 22 and the pin outlet side are provided. A plate height holding mechanism that holds the vertical position of the lower surface of the stripper plate 122 is provided.

  Further, in the hollow pin extracting step, both the pin output side punch 124 and the pin output side stripper plate 122 are moved upward. In this movement, the pin take-out side second lower die is formed by the pin take-out side small punch part 124b protruding downward from the pin take-out side second punch insertion hole 122a on the pin take-out side die plate 130. This is performed while being pushed into the insertion hole 130a.

Thereby, in the hollow pin extracting step, the stress due to the back pressure applied from the knockout 202 to the bottom surface of the hollow pin P when the formed hollow pin P is extracted is applied from the knockout 202 to the bottom surface of the hollow pin P when the hollow pin P is formed. The stress is less than the stress due to the applied back pressure.
Further, as described above, the pinning-side plate locking mechanism 138 connects the pinning-side punch 124 and the pinning-side stripper plate 122 so as to move upward together. This connection is performed in a state where the pin take-out side small diameter punch portion 124b pushes the metal plate 2 disposed on the pin take-out side die plate 130 into the pin take-out side second lower die insertion hole 130a.

  For this reason, the punching pin die 1 is hollowed out from the knockout 202 when the hollow pin P is formed by applying stress due to back pressure applied from the knockout 202 to the bottom surface of the hollow pin P when the formed hollow pin P is extracted. A stress reduction mechanism that reduces the stress due to the back pressure applied to the bottom surface of the pin P is provided. This is realized by having the above-described pin take-out side plate lock mechanism 138.

(Operation in material removal process)
Hereinafter, the operation of the punching pin die 1 in the material removing process will be described.
The material removal step is a step of removing the metal plate 2 in which the through hole H is formed from the hole-side stripper plate 22 in the hole-side processing block 10.
Further, in the material removal step, in the pin exit side processing block 100, the pin exit side punch 124 is extracted from the hollow portion of the hollow pin P, and the metal plate 2 on which the hollow pin P is formed is removed from the pin exit side stripper plate 122. It is a process.

(Operation in the punching side processing block 10 in the material removal process)
First, with reference to FIG. 1 to FIG. 9, the operation of the hole punching side processing block 10 among the operations of the hole punching die 1 in the material removal step will be described with reference to FIG. 25.

FIG. 25 is a view showing a state of the punching pin out die 1 and the metal plate 2 in the material removing step. In FIG. 25, as in FIG. 1, the detailed configurations of the hole-extracting side plate locking mechanism 38 and the pinning side plate locking mechanism 138 are omitted.
As shown in FIG. 25, in the hole punching side processing block 10, in the material removing step, the hole punching side upper die set 12 is further raised from the position raised in the hollow pin extracting step. As a result, the meshing between the perforated side upper cam driver 62 and the perforated side cam slider 66 is released.

Specifically, the upper die set 12 on the punching side is raised, the upper cam driver 62 on the punching side and the cam slider 66 on the punching side are raised, and the protruding cam slider protrusion 82 is moved to the punching side. The lower cam driver protrusion 80 is brought into contact from below.
When the perforated side cam slider projecting portion 82 is brought into contact with the perforated side lower mold driver projecting portion 80 from below, the perforated side slider inclined surface 82a becomes the perforated side lower cam second inclined surface 80b. Surface contact. Then, the punched-side cam slider protruding portion 82 is raised while the punched-side slider inclined surface 82a is pressed by the punched-side lower mold second cam inclined surface 80b.

  Here, when the holed side slider inclined surface 82 a is pressed against the holed side lower mold cam second inclined surface 80 b, the pressing force by the holed side lower cam driver 64 is applied to the holed side cam slider 66. In addition, the hole-side cam slider operating spring 94 contracts. When the hole-side cam slider operating spring 94 contracts, the hole-side cam slider 66 pressed by the hole-side lower cam driver 64 moves away from the hole-side lower cam driver 64 (left in FIG. 4). Direction).

  When the perforated side upper cam driver 62 rises and the perforated side cam slider 66 moves away from the perforated side lower cam driver 64, it comes into contact with the perforated side lower cam second inclined surface 80b. The perforated side slider inclined surface 82a moves upward toward the perforated side lower cam first inclined surface 80a.

  When the perforated side slider inclined surface 82a moving upward toward the perforated side lower mold cam first inclined surface 80a comes into contact with the perforated side lower mold cam chamfered portion 80c, the perforated side opposed in the vertical direction The slider horizontal surface 82b and the perforated side upper cam horizontal surface 74b are separated from each other. As a result, the meshing between the hole punching side upper cam driver 62 and the hole punching side cam slider 66 is released, so that the hole punching side upper cam driver 62 rises independently from the hole punching side cam slider 66. It becomes.

  In a state in which the hole punching side upper cam driver 62 is lifted independently from the hole punching side cam slider 66, when the hole punching side upper die set 12 is lifted, the contracted hole punching side pin support spring 32 is extended. To do. For this reason, only the perforated side upper mold backing plate 14 of the perforated side upper mold backing plate 14 and the perforated side punch plate 18 rises.

  Then, the punching side upper die set 12 is continuously lifted, and the punching side upper die backing plate 14 is continuously lifted to extend the punching side pin support spring 32 to the maximum length. When the metal plate 2 in which the through hole H is formed is removed from the lower surface of the punching-side stripper plate 22 with the punching-side pin support spring 32 extended to the maximum length, the punching-side processing block 10 Then, the material removing process is completed. At this time, the holed side cam slider 66 is disposed above the holed side lower cam driver 64, and the holed side cam slider 66 and the holed side lower cam driver 64 are not in contact with each other.

(Operation of the pin removal side processing block 100 in the material removal process)
Next, with reference to FIG. 1 to FIG. 9 and FIG. 25, operations in the pinning-side processing block 100 among operations of the punching pinning processing mold 1 in the material removal process will be described. In addition, the following description is described centering on a different part from the operation | movement in the punching side processing block 10 mentioned above, and the same content may be abbreviate | omitted.

  As shown in FIG. 25, in the pinning-side processing block 100, in the material removing step, the pinning-side upper die set 112 is further raised from the position raised in the hollow pin extracting step. Accordingly, the engagement between the pinning-side upper mold cam driver 162 and the pinning-side cam slider 166 is released by the same procedure as the operation in the above-described punching-side processing block 10.

When the engagement between the pinning-side upper cam driver 162 and the pinning-side cam slider 166 is released, the pinning-side upper cam driver 162 rises independently from the pinning-side cam slider 166.
In a state where the pinning-side upper die cam driver 162 is lifted independently from the pinning-side cam slider 166, when the pinning-side upper die set 112 is raised, the contracted pinning-side stripper spring 136 is extended. . For this reason, only the pin-out side punch plate 118 of the pin-out side punch plate 118 and the pin-out side stripper plate 122 rises.

  Then, when the pin take-up side punch plate 118 rises while the pin take-up side upper die set 112 continues to rise, the pin take-out side punch 124 rises in the pin take-out side second punch insertion hole 122a, and the hollow pin P It is extracted upward from the hollow portion. In this state, the pinning-side cam slider 166 is disposed above the pinning-side lower cam driver 164, and the pinning-side cam slider 166 and the pinning-side lower cam driver 164 are not in contact with each other.

  When the pin take-out side punch 124 is extracted upward from the hollow portion of the hollow pin P, the metal plate 2 on which the hollow pin P is formed is easily peeled off from the lower surface of the pin take-out side stripper plate 122, and the pin take-out side stripper plate It can be easily removed from 122. Then, when the pin take-out side punch 124 is extracted upward from the hollow portion of the hollow pin P, and the metal plate 2 on which the hollow pin P is formed is removed from the lower surface of the pin take-out side stripper plate 122, the pin take-out side The material removal process in the processing block 100 ends.

  As described above, the punching-out pinning die 1 according to the first embodiment has the punching-side stripper plate 22 and the pinning-side stripper when the hollow pin P is formed by the plate height holding mechanism. When the plate 122 is raised, it is possible to maintain the vertical positions of the lower surface of the hole stripper side stripper plate 22 and the lower surface of the pin outlet side stripper plate 122.

For this reason, in this invention, it becomes possible to suppress the deformation | transformation which arises in the metal plate 2 at the time of extraction of the formed hollow pin P, and it arises in the metal plate 2 when removing the metal plate 2 after a process from a metal mold | die. Since deformation can be suppressed, the quality of the processed product can be further improved. In addition, a processed product is the metal plate 2 in which the hollow pin P was formed, for example.
Moreover, the punching pinning die 1 according to the first embodiment is used when the hollow pin P formed by the punching side plate coupling mechanism and the pinning side plate coupling mechanism of the plate height holding mechanism is pulled out. When the perforating side stripper plate 22 and the pin outlet side stripper plate 122 are raised, the vertical positions of the lower surface of the perforated side stripper plate 22 and the lower surface of the pin outlet side stripper plate 122 are maintained.

With such a configuration, when the formed hollow pin P is extracted, the hole-extracting side stripper plate 22 and the pin-extracting-side stripper plate 122 are moved upward without requiring the configuration of an independent actuator or the like. It is possible to maintain the vertical position of the lower surface of the stripper plate 22 and the lower surface of the pin exit side stripper plate 122.
For this reason, in this invention, since it becomes possible to suppress the deformation | transformation which arises in the metal plate 2 at the time of extraction of the formed hollow pin P, without requiring structure of an independent actuator etc., the quality of a processed product is improved. This can be further improved.

Moreover, when the metal plate 2 after a drilling removes the metal plate 2 after a process from the metal mold | die, the hole punching-out die 1 which concerns on 1st embodiment can be suppressed.
For this reason, in the present invention, the sequential feeding (sequential feeding) of the metal plate 2 is stopped by applying the hole punching die 1 to the progressive die as in the first embodiment. It becomes possible to suppress, and it becomes possible to improve the progressive efficiency of the metal plate 2 more.

  Further, in the present invention, since it is possible to perform hole punching and pinning in one progressive die without using a plurality of single-shot dies, it is possible to rationalize the machining process, and the metal plate 2 It is possible to further improve the processing efficiency.

(Second embodiment)
In the first embodiment, the plate height holding mechanism is configured to include a hole punching side plate coupling mechanism and a pinning side plate coupling mechanism.

  On the other hand, for example, a plate height holding mechanism is formed by connecting the punching side stripper plate 22 and the pin outlet side stripper plate 122 so as to move in the vertical direction according to the state of the machining process. May be. As a specific example, this is a configuration in which the punched side stripper plate 22 and the pin outlet side stripper plate 122 are gripped and connected in accordance with the state of the processing step.

However, the configuration in which the hole-side stripper plate 22 and the pin-out side stripper plate 122 are gripped and connected according to the state of the machining process requires a position sensor, an actuator, and the like.
For this reason, as in the first embodiment, the plate height holding mechanism is configured to have a hole-extracting-side plate coupling mechanism and a pinning-side plate coupling mechanism. It is advantageous in terms of cost and the like as compared to connecting and connecting.

In the first embodiment, the stress reduction mechanism is configured to include the pin take-out side plate lock mechanism 138.
On the other hand, for example, when the formed hollow pin P is pulled out, the back pressure applied to the hollow pin P by the knockout 202 may be reduced by controlling the pressure of the knockout spring 200. This is because, as in the first embodiment, the knockout spring 200 is formed of a gas spring using a fluid (gas) such as high-pressure gas, or an elastic member whose elastic force can be changed by electric power, magnetic force, or the like. Applicable.

  Note that the stress reduction mechanism may include a pin-out side plate lock mechanism 138 and a configuration that controls the pressure of the knockout spring 200.

1 Hole punching die, 2 Metal plate, 10 Hole side processing block, 12 Hole upper die set, 14 Hole upper backing plate, 16 Hole punch backing plate, 18 Hole punch Side punch plate, 20 Perforated side stripper backing plate, 22 Perforated side stripper plate, 24 Perforated side punch, 26 Perforated side lower die set, 28 Perforated side lower mold backing plate, 30 Perforated side die plate, 32 punching side pin support spring, 34 punching side support pin, 36 punching side stripper spring, 38 punching side plate locking mechanism, 62 punching side upper cam driver, 64 punching side lower cam driver, 66 hole Pull-out side cam slider, 100 pin lead-out processing block, 112 Pin lead-out side Die set, 114 Pin exit side upper backing plate, 116 Pin exit side punch backing plate, 118 Pin exit side punch plate, 120 Pin exit side stripper backing plate, 122 Pin exit side stripper plate, 124 Pin exit side punch, 126 Pin exit side lower die set, 128 Pin exit lower die backing plate, 130 Pin exit die plate, 132 Pin exit side pin support spring, 134 Pin exit side support pin, 136 Pin exit side stripper spring, 138 Pin exit side Plate lock mechanism, 162 Pin out side upper cam driver, 164 Pin out side lower cam driver, 166 Pin out side cam slider, 200 Knockout spring, 202 Knockout, P Hollow pin, H Through hole

Claims (4)

A perforated die plate that supports the metal plate from below;
A perforated side stripper plate facing the perforated side die plate with the metal plate in between,
A pin exit side die plate that supports the metal plate from below and has a through hole penetrating in the vertical direction;
A pinning-side stripper plate that has a through-hole penetrating in the vertical direction and faces the pinning-side die plate with the metal plate interposed therebetween;
The metal plate inserted through the through hole of the pinning side stripper plate and disposed on the pinning side die plate is pushed into the through hole of the pinning side die plate from above, and downward from the metal plate. A pin exit side punch that forms a protruding hollow pin;
From the state where the hollow pin is formed between the punched side die plate and the punched side stripper plate and between the pinned side die plate and the pinned side stripper plate with the metal plate sandwiched between them. When the hole-out side stripper plate and the pin-out side stripper plate are raised and the hollow pin is extracted from the through hole of the pin-out side die plate, the lower surface of the hole-out-side stripper plate and the pin-out side A plate height holding mechanism that holds the vertical position of the lower surface of the stripper plate;
A mold for punching out a pin, characterized by comprising: An upper die set on the perforation side that is disposed above the perforation side stripper plate and is movable in the vertical direction;
A pin-out side upper die set that is disposed above the pin-out side stripper plate and moves in the vertical direction together with the hole-out side upper die set;
With
The plate height holding mechanism is
The punched side upper die set and the punched side stripper plate in a state where the pinned side punch has pushed a metal plate disposed on the pinned side die plate into a through hole of the pinned side die plate. And a perforated side plate coupling mechanism for coupling the two so as to rise together,
The pin take-up side upper die set and the pin take-out side stripper plate in a state where the pin take-out side punch pushes a metal plate disposed on the pin take-out side die plate into a through hole of the pin take-out side die plate. And a pin take-out side plate coupling mechanism that couples together so as to rise together,
The die for punching out a pin according to claim 1, characterized by comprising: A pin-out side die plate and a pin-out side between the perforated side die plate and the perforated side stripper plate that support the metal plate from below, and that have a through hole that supports the metal plate from below and penetrates in the vertical direction. The metal plate is sandwiched between a stripper plate and the metal plate disposed on the pinning-side die plate by a pinning-side punch inserted through a through hole of the pinning-side stripper plate. A hollow pin forming step of forming a hollow pin that protrudes downward from the metal plate by being pushed into the through hole of the die plate from above.
A hollow pin extracting step of extracting the hollow pin formed in the hollow pin forming step from the through hole of the pin output side die plate by raising the hole extraction side stripper plate and the pin output side stripper plate;
Including
In the hollow pin extracting step, when the hole stripper stripper plate and the pin stripper stripper plate are raised, the vertical positions of the bottom surface of the hole stripper stripper plate and the bottom surface of the pin stripper stripper plate are maintained. A hole punching pin processing method characterized by that.   In the hollow pin forming step, the pin-out side punch pushes the metal plate disposed on the pin-out side die plate into the through hole of the pin-out side die plate, and above the punch-out side stripper plate. The upper die set on the punching side that is disposed in the vertical direction and is movable in the vertical direction and the punching-side stripper plate are connected together so as to rise, and the punching-side stripper plate is disposed above and on the pinning-side stripper plate. 4. The punching pinning process according to claim 3, wherein the pinning side upper die set moving in the vertical direction together with the side upper die set and the pinning side stripper plate are connected so as to rise together. Method.

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