JP2009034703A - Punch-mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a punch-mounting structure with which a punch is surely mounted without necessitating various tools and mounting state is easily confirmed. <P>SOLUTION: This structure is provided with a retainer 2 having a punch fittingly inserting hole 2A, a slide member 3 which straddles a retainer 2 and is slidable and an energizing means 4 for energizing the slide member 3. A punch inserting hole 3A communicating with the punch fittingly inserting hole 2A is divided with the hole peripheral part 3B on the slide member 3. In the state where the punch 1 is fitted into the punch inserting hole 3A and the punch fittingly inserting hole 2A, the punch 1 is held with the retainer 2 by fitting the locking part 3C of the hole peripheral edge part 3B into the recessed engaging part 1A of the punch 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a punch mounting structure for mounting a punch to a retainer.

  Conventionally, punches are used to punch or punch a sheet or film-like material. Various devices have been developed for attaching this punch to a punch support member, a so-called retainer. Among them, a punch attachment device that does not require removal of the retainer when attaching or removing the punch is considered (for example, Patent Document 1).

  A punch mounting device disclosed in Patent Document 1 will be described. 5A and 5B show a cross section of a conventional punch attachment device 50 disclosed in Patent Document 1, wherein FIG. 5A shows a punch detachable state and FIG. 5B shows a punch attachment state. In the figure, the take-out direction of the punch 55 is the + y direction, and the two directions orthogonal to the punchy direction are the + x direction and the + z direction.

  The retainer 51 shown in FIG. 5 is positioned by a knock pin (not shown) on a die set 60 fixed to a punching device or a hole punching device (both not shown) and fixed by a mounting bolt (not shown). Thus, the punch 55 is attached to the punching device or the hole punching device. As shown in the figure, the retainer 51 is provided with a groove portion 53 so as to be orthogonal to the punch insertion hole 52, and a slide block 54 is disposed in the groove portion 53. The punch 55 is locked by the slide block 54 engaging with the flat portion 55 </ b> A of the punch 55. An engaging convex portion 54A is provided on the side of the slide block 54 where the punch is inserted, and a tapered portion 54B is provided on the engaging convex portion 54A. A concave portion 54 </ b> C is provided on the retainer side of the slide block 54. The compression coil spring 56 and one end of the spring pin 57 are inserted into the recess 54C. Since the other end of the spring pin 57 is fitted in the pin hole 58 provided in the recess 54C, the slide block 54 is urged to the punch side. Note that a set screw 59 is attached to the groove 53 on the opposite side of the punch insertion hole 52, so that the set screw 59 locks the slide block 54.

  When attaching the punch 55 to the retainer 51, the operator pushes the punch 55 into the punch insertion hole 52 of the retainer 51. Then, the punch base end portion 55 </ b> B comes into contact with the engagement convex portion 54 </ b> A at the tip end of the slide block 54. The force by which the punch 55 is pushed slides the slide block 54 in the −x direction, and the punch base end portion 55 </ b> B comes into contact with the die set 60. At this time, if the engagement convex portion 54B of the slide block 54 is not engaged with the flattening portion 55A of the punch 55 (the state of FIG. 5A), the operator rotates the punch 55 around the axis, As shown in FIG. 5B, the engaging convex portion 54A and the flattening portion 55A are engaged.

  When removing the punch 55 from the retainer 51, when the operator turns the punch 55 about 90 degrees around the axis, the state changes from FIG. 5 (B) to FIG. 5 (A), and the engagement convex portion 54A of the slide block 54 is punched. The punch 55 can be pulled out of the retainer 51 by being removed from the flattening portion 55 </ b> A of 55.

Japanese Utility Model Publication No. 1573431

  In the punch attachment device 50 shown in FIG. 5, it is not necessary to use a general tool such as a wrench or a dedicated tool when the punch 55 is surely replaced. However, the portion where the flat portion 55A of the punch 55 engages with the slide block 54 is not visible from the outside. Therefore, the operator cannot confirm from the outside that the punch 55 is securely attached.

  Since the punch 55 is attached to the retainer 51 by engaging the engaging convex portion 54 </ b> A with the flattening portion 55 </ b> A, the punch 55 may not be stably attached to the retainer 51. Further, since the slide block 54 is fitted in the groove portion 53 on the die set side of the retainer 51, the slide block 54 is inevitably detached from the retainer 51 when the punch attachment device 50 is removed from the die set 60.

  An object of this invention is to provide the punch attachment structure which can attach a punch reliably, without using various tools in view of the said subject, and can confirm an attachment state easily.

  To achieve the above object, the present invention includes a retainer having a punch insertion hole and a slide member that is slidably mounted across the retainer, and the slide member communicates with the punch insertion hole. The insertion hole is defined by the peripheral edge of the hole, and the punch is retained by the engaging portion of the peripheral edge of the hole being fitted into the engagement recess of the punch while the punch is inserted into the punch insertion hole and the punch insertion hole. It is characterized by being. With this configuration, by sliding the slide member, the punch insertion hole of the slide member communicates with the punch insertion hole of the retainer, the punch is pushed into the punch insertion hole from the punch insertion hole, and the peripheral edge portion of the hole is engaged. The stop is fitted into the engagement recess of the punch, and the punch is held by the retainer.

  The slide member preferably has a U-shaped cross section and extends in the slide direction. The slide member can be securely and stably attached to the retainer in a slidable state.

  Preferably, the slide member is provided with a groove portion on the retainer side along the slide direction. The groove portion accommodates biasing means, and the slide member is biased in the direction opposite to the slide direction by the biasing means. With this configuration, since the slide member is always urged by the urging means, the engaging portion of the hole peripheral portion is fitted into the engaging recess of the punch, and the punch is held by the retainer.

  Preferably, the urging means is a compression spring coil, one end of the compression spring coil abuts on a stopper piece attached to the retainer, the other end of the compression spring coil abuts on the slide member, and the slide member is moved by the compression spring coil. Is biased in the direction opposite to the slidable direction. The urging means can be realized with a simple configuration in which the compression coil spring is accommodated in the groove of the slide member.

  According to the punch mounting structure of the present invention, when the punch is mounted on the retainer, the punch insertion hole of the slide member communicates with the punch insertion hole of the retainer by sliding the slide member, and the punch is punched from the punch insertion hole. It can be pushed into the insertion hole. Thereafter, the slide member returns to its original position by urging, so that the engaging portion of the hole peripheral portion is fitted into the engaging recess of the punch, and the punch is held by the retainer. In the punch mounting structure of the present invention, the mounting state of the punch to the retainer, that is, the state where the hole peripheral portion of the slide member surrounds the punch and the locking portion of the hole peripheral portion is fitted in the engaging recess of the punch It can be confirmed from the outside.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1 to 3 show a punch mounting structure according to the embodiment, FIG. 1 is a plan view, FIG. 2 is a side view, and FIG. 3 is a partial cross-sectional view taken along line X1-X2. In either case, the punch 1 is attached. FIG. 4 is a cross-sectional view taken along line X1-X2 in a state in which the punch 1 is removable.

  In the punch mounting structure according to this embodiment, the retainer 2 having the punch insertion hole 2A, the slide member 3 that is slidably mounted across the retainer 2, and the slide member 3 are biased in the direction opposite to the slide direction. A biasing means 4 is provided. A punch insertion hole 3A communicating with the punch insertion hole 2A is defined in the slide member 3 by a hole peripheral edge 3B. In a state where the punch 1 is fitted into the punch insertion hole 3A and the punch insertion hole 2A, the latch 1C of the hole peripheral edge 3B is fitted into the engagement recess 1A of the punch 1 so that the punch 1 is held by the retainer 2 Is done. For the sake of explanation, the direction in which the slide member 3 is slid against the urging force of the urging means 4 is the + X direction, the direction in which the punch 1 is pulled out is the + Y direction, and the direction perpendicular to any of these is the + Z direction. .

A specific configuration of the punch mounting structure will be further described.
The retainer 2 that is a punch support member will be described. The retainer 2 is attached to a die set (not shown) attached to various devices such as a punching device and a hole punching device, and the punch 1 is attached to the various devices. As shown in FIG. 2, the retainer 2 has flange portions 2B and 2B extending in the outer direction (± Z direction) orthogonal to the slide direction of the slide member 3, and the slide member 3 is formed by the flange portions 2B and 2B. Are slidably engaged with each other. The retainer 2 is provided with punch insertion holes 2A as shown in FIGS. 3 and 4, and mounting bolt holes 2C and 2C are provided at positions facing diagonally across the punch insertion holes 2A as shown in FIG. Is provided. The mounting bolt holes 2 </ b> C and 2 </ b> C are sized so that the head 5 </ b> A of the mounting bolt 5 does not protrude from the surface of the retainer 2.

  As shown in FIG. 2, the slide member 3 has a plate-shaped portion 3D, a pair of side portions 3E and 3E, and a claw portion 3F that have a U-shaped cross section and extend in the sliding direction. The slide member 3 spans the retainer 2 with a pair of side portions 3E and 3E, and is attached so as to be slidable without engaging with the collar portion 2B and the claw portion 3F and coming off the retainer 2. A punch insertion hole 3A is defined at a substantially center of the slide member 3 by a hole peripheral portion 3B so as to communicate with the punch insertion hole 2A of the retainer 2. The hole peripheral portion 3B is provided with a locking portion 3C so as to partially protrude from the punch insertion hole 3C. For example, as shown in FIG. 1, half of the punch insertion hole 3A may have a semicircular cross section, and the other half may be rectangular.

  On the retainer 2 side of the slide member 3, as shown in FIGS. 3 and 4, a groove 6 is provided along the slide direction. A stopper piece 8 is attached to the side surface in the X direction of the retainer 2 with a mounting bolt 7. One end on the sliding direction side of the groove 6 is closed at the tip of the stopper piece 8. A compression spring coil 4 is housed in the groove 6 of the slide member 3 as an urging means. One end of the compression spring coil 4 is in contact with a part of the stopper piece 8 and the other end is in contact with the slide member 3. Thus, the slide member 3 is always biased in the direction opposite to the slide direction (−X direction).

A method for attaching and detaching the punch 1 using the punch attachment structure will be described.
A case where the punch 1 is attached to the retainer 2 will be described. The operator slides the slide member 3 in the + X direction against the urging force of the urging means 4 by hand. Then, the hole peripheral portion 3B on the side where the locking portion 3C is not formed in the punch insertion hole 3A communicates with the punch insertion hole 2A. In this state, the punch 1 is pushed into and inserted from the punch insertion hole 3A into the punch insertion hole 2A (see FIG. 4). Thereafter, the operator releases his / her hand from the slide member 3. Then, the sliding member 3 slides in the −X direction by the urging force of the compression spring coil 4, the locking portion 3 </ b> C of the sliding member 3 is fitted into the locking recess 1 </ b> A on the side of the punch 1, and the sliding member 3 is always − The state is biased in the X direction (see FIG. 3).

  Next, the case where the punch 1 is removed from the retainer 2 will be described. In the state shown in FIG. 3, the operator slides the slide member 3 in the + X direction by hand, and the hole peripheral portion 3B on the side where the locking portion 3C is not formed in the punch insertion hole 3A communicates with the punch insertion hole 2A. (See FIG. 4). In this state, the punch 1 can be removed by pulling it out from the punch insertion hole 2A via the punch insertion hole 3A.

  In the punch mounting structure of the present embodiment, the punch insertion hole 3A is defined in the slide member 3 by the hole peripheral portion 3B, so that the punch 1 pushed into the punch insertion hole 3A and the punch fitting insertion hole 2A is In a state surrounded by the portion 3B, the locking portion 3C of the hole peripheral portion 3B is fitted into the locking recess 1A on the punch side portion. Since the hole peripheral portion 3B is provided on the punch insertion side of the slide member 3, the fitting of the locking portion 3C to the punch 1 can be easily visually confirmed.

  Unlike the slide block 54 in the conventional punch mounting apparatus 50 shown in FIG. 5, the slide member 3 is disposed so as to cover the retainer 2, so that the slide member 3 slides stably. Even when punching is performed, since the punch 1 is securely held by the slide member 3 and the retainer 2, it is difficult for the punching and punching quality to vary, and the accuracy is improved.

  Although the embodiment has been described above, it goes without saying that the embodiment can be appropriately modified within the scope of the present invention. For example, the shape and size of each member are not limited to those shown in the drawings, and needless to say, the shape and size can be appropriately changed according to the punching device or punching device to which the punch mounting structure is applied.

It is a top view of the punch attachment structure concerning an embodiment. It is a side view of the punch attachment structure which concerns on embodiment. It is sectional drawing which follows the X1-X2 line of the punch attachment structure which concerns on embodiment. It is sectional drawing which follows the X1-X2 line | wire in the state in which a punch is removable. It is sectional drawing of the conventional punch attachment apparatus, (A) is a punch detachable state, (B) has shown the punch attachment state.

Explanation of symbols

1: punch 1A: engagement recess 2: retainer 2A: punch fitting insertion hole 2B: flange 2C: mounting bolt hole 3: slide member 3A: punch insertion hole 3B: hole peripheral portion 3C: locking portion 3D: plate portion 3E : Side part 3F: Claw part 4: Biasing means (compression coil spring)
5, 7: Mounting bolt 5A: Head 6: Groove 8: Stopper piece

Claims (4)

A retainer having a punch insertion hole, and a slide member slidably mounted across the retainer,
A punch insertion hole communicating with the punch fitting insertion hole is defined in the slide member by a hole peripheral portion,
In the state where the punch is fitted in the punch insertion hole and the punch fitting insertion hole, the punch is held by fitting the engaging portion of the peripheral edge portion of the hole into the engagement concave portion of the punch. Punch mounting structure.   The punch mounting structure according to claim 1, wherein the slide member has a U-shaped cross section and extends in the slide direction. The slide member is provided with a groove on the retainer side along the slide direction,
The groove portion contains a biasing means,
The punch mounting structure according to claim 1, wherein the slide member is biased in the direction opposite to the slide direction by the biasing means.   The biasing means is a compression spring coil, one end of the compression spring coil abuts on a stopper piece attached to the retainer, the other end of the compression spring coil abuts on a slide member, and the compression spring coil The punch mounting structure according to claim 3, wherein the slide member is biased in the direction opposite to the slide direction.

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