JP2009000775A - Positioning member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a positioning member which can easily pull out a projecting portion from a blanking die. <P>SOLUTION: The positioning member for positioning the relative position of the blanking die 10 and a face plate 16 is composed of: a bush 1 to be inserted into a retaining hole 19 formed in the blanking die 10; and a pin 2 which is inserted into the bush 1 so as to slide in the axial direction, and is inserted at the end portion thereof into the positioning hole 21 formed on the face plate 16. The pin 2 is energized in the projecting direction from the bush 1 by means of an elastic member. An engaging projection 5 is provided on one of the outer periphery of the pin 2 and the circumferential wall of the bush 1, and a guide groove 6 for guiding the engaging projection 5 is provided on the other. In the guide groove 6, an opened groove portion 6a opened at one end so as to put-in and put-out the engaging projection 5, a circumferential hooked portion 6b to serve as the intermediate passage of the engaging projection 5, and an axially elongating portion 6c to allow the axial slide of the pin 5, are formed so as to communicate with each other, and a coming-out preventing portion 6d for preventing the coming-out of the engaging projection 5 by being fit thereinto is formed on the boundary between the hooked portion 6b and the axially elongating portion 6c. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a positioning member for relatively positioning a punching die and a face plate in a punching machine for punching blanks of paper containers.

  In Patent Document 1 below, as shown in FIG. 8, a punching die 54 fixed to either one of an upper board 51 and a lower board 52 (in this example, an upper board 51) via a chase 53, and the other A positioning member Q for positioning the relative position of the face plate 57 fixed to the dead plate 55 and the cutting plate 56 on the lower plate 52 (in this example) is described.

  The die 54 includes a cutting edge 58 and a ruled line 59. The face plate 57 has a concave groove 60 corresponding to the ruled line 59, and a double-sided adhesive sheet 61 is pasted on the back side. The positioning member Q has a proximal end (upper part in this example) inserted into a holding hole 62 formed in the die 54 and a distal end (lower part in this example) inserted into and removed from a positioning hole 63 formed in the face plate 57. It has become so.

  At the base end portion of the positioning member Q, the holding force adjusting member 64 made of an elastic material such as rubber is used to adjust the holding force with respect to the die 54 by changing the pressure contact force to the inner surface of the holding hole 62 with elastic deformation. A pressing member 65 made of an elastic material such as rubber interposed between the punching die 54 and the face plate 57 is fitted on the outer periphery of the intermediate portion of the positioning member Q.

  In order to position the relative position between the die 54 and the face plate 57 using such a positioning member Q, as shown in FIG. 8 (a), the upper board 51 and the lower board 52 are separated from each other. Thus, the peripheral edge of the positioning hole 63 of the face plate 57 is engaged with the tip of the positioning member Q.

  Next, as shown in FIG. 8 (b), the lower board 52 is raised to bring the upper board 51 and the lower board 52 closer together, so that the pressing member 65 is compressed and the positioning member Q is inserted into the holding hole 62. Accordingly, the face plate 57 is pressed and bonded to the cutting plate 56.

  Thereafter, as shown in FIG. 8C, the lower board 52 is lowered, the upper board 51 and the lower board 52 are separated from each other, the positioning member Q is pulled out from the holding hole 62, and the positioning member Q and the pressing member 65 are removed. Are removed from the surface of the die 54 and the sheet material fed between the die 54 and the face plate 57 is brought into contact with the upper board 51 and the lower board 52 by the cutting blade 58. The cutting process can be performed by the ruled lines 59 and the recessed grooves 60, respectively.

JP 2005-131773 A

  However, in the positioning member Q as described above, when the holding force with respect to the die 54 is set to a size that does not unexpectedly come out of the holding hole 62, a large force is required when pulling out from the holding hole 62 after the positioning is completed. There is a problem that it becomes difficult to work in a narrow space.

  Then, this invention makes it a subject to provide the positioning member which can pull out a protrusion part easily from a die.

  In order to solve the above-described problems, the present invention provides a positioning member for positioning a relative position between a punching die fixed to one of an upper board and a lower board of a punching machine and a face plate fixed to the other. Adopting a configuration consisting of a bush inserted into the formed holding hole and a pin inserted inside the bush so as to be slidable in the axial direction and inserted into a positioning hole formed in the face plate, the pin is elastic The member urges the bush in the protruding direction.

  An engagement protrusion is provided on one of the outer periphery of the pin and the peripheral wall of the bush, and a guide groove for guiding the engagement protrusion is provided on the other, and the guide groove is opened at one end so that the engagement protrusion can be inserted and removed. The open groove, the circumferential flange serving as the intermediate path of the engaging projection, and the axial extension allowing the axial sliding of the pin are formed in communication with each other at the boundary between the flange and the axial extension. Thus, a retaining portion is formed in which the engaging protrusion is fitted and retained.

  In this positioning member, when the die is set in the punching machine, if the engaging protrusion is fitted into the retaining portion of the guide groove, the pin does not unexpectedly come off from the bush inserted into the die.

  Also, when positioning, when the tip of the pin is inserted into the positioning hole of the face plate and the upper board and the lower board are brought close to each other, the pin is pushed in and the face plate is accurately and reliably bonded to the opposing cutting plate. .

  After the positioning is finished, when the upper board and the lower board are separated from each other, the pin returns to the protruding state, and when the pin is slightly pushed from this state and rotated in the circumferential direction, the engaging protrusion is released from the retaining portion of the guide groove. Since it comes out and reaches the open groove through the flange, the pin can be easily pulled out from the bush even if the distance between the upper board and the lower board is narrow.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in FIG. 1, the positioning member P includes a bush 1 and a pin 2, and a coil spring 3 is attached to the base end of the pin 2.

  The bush 1 is configured such that a distal end of a cylindrical peripheral wall is opened, and a flange 4 is formed on the outer periphery of a closed base end portion. The pin 2 is inserted inside the bush 1 so as to be slidable in the axial direction, and is urged by the coil spring 3 in the protruding direction.

  An engagement protrusion 5 is provided on the outer periphery of the pin 2, and a guide groove 6 that is engaged and guided by the engagement protrusion 5 is provided on the peripheral wall of the bush 1.

  In the guide groove 6, an open groove portion 6 a opened at one end to enter and exit the engagement protrusion 5, a circumferential flange portion 6 b serving as an intermediate path of the engagement protrusion 5, and an axial slide of the pin 2 are provided. An allowable shaft extending portion 6c is formed in communication with each other, and a retaining portion 6d is formed at the boundary between the flange portion 6b and the shaft extending portion 6c so that the engaging protrusion 5 is fitted and prevented from coming off.

  A hexagon hole 7 into which a hexagon wrench is inserted is formed at the tip of the pin 2.

  Such a positioning member P is attached to the die 10 as shown in FIG. The punching machine for setting the die 10 is such that the upper plate 11 and the lower plate 12 come in contact with each other. In this example, the die 10 is fixed to the lower plate 12 via the chase 13, and the cutting plate is attached to the upper plate 11. 14 is fixed.

  The punching die 10 is provided with a ruled line 15 so as to protrude from the front surface. The face plate 16 positioned with respect to the punching die 10 has a concave groove 17 corresponding to the ruled die 15 and a double-sided adhesive sheet 18 is pasted on the back surface. It is said that

  The bush 1 of the positioning member P is press-fitted into the holding hole 19 formed in the die 10 from the back surface side, and the flange 4 prevents the surface from being pulled out. In this state, the pin 2 protrudes from the surface of the die 10, and a pressing member 20 made of an elastic material such as rubber or sponge is fitted on the outer periphery of the protruding portion so that the tip portion is exposed.

  When the die 10 is set on the lower plate 12, the engaging protrusion 5 is fitted into the retaining portion 6d of the guide groove 6 and is held by the biasing force of the coil spring 3. Will not come out unexpectedly.

  In the positioning operation using the positioning member P, the tip end portion of the pin 2 is inserted into the positioning hole 21 formed in the face plate 16 and the face plate 16 is placed on the pressing member 20. At this time, the release paper covering the double-sided pressure-sensitive adhesive sheet 18 on the back surface of the face plate 16 is peeled off.

  Next, as shown in FIG. 3, when the lower board 12 is raised and the upper board 11 and the lower board 12 are brought close to each other, the double-sided adhesive sheet 18 on the back surface of the face plate 16 contacts the cutting plate 14.

  Subsequently, as shown in FIG. 4, when the lower board 12 is further raised, the engaging protrusion 5 slides downward along the axial extension 6 c of the guide groove 6, and the pin 2 is pushed into the bush 1 and pressed. While the member 20 is compressed, the double-sided pressure-sensitive adhesive sheet 18 comes into close contact with the cutting plate 14, and the face plate 16 is bonded to the cutting plate 14.

  After the face plate 16 is positioned and fixed to the upper board 11 as described above, the lower board 12 is lowered and the upper board 11 and the lower board 12 are separated as shown in FIG. And the pin 2 returns to the protruding state by the biasing force of the coil spring 3.

  Next, as shown in FIG. 6, when the hexagon wrench 22 is inserted into the hexagon hole 7 and is rotated in the circumferential direction while slightly pushing the pin 2 into the bush 1, the engagement protrusion 5 becomes the retaining portion 6 d of the guide groove 6. And reaches the open groove 6a through the flange 6b.

  Since the pin 2 is pushed out from the bush 1 by the biasing force of the coil spring 3, there is no need to pick it up with pliers or the like, and even if the space between the upper board 11 and the lower board 12 is narrow, the pin 1 is pushed from the bush 1. 2 can be easily pulled out.

  When the pins 2 are removed in this manner, as shown in FIG. 7, the obstructing projections are removed from the surface of the die 10, and the upper plate 11 and the lower plate are added to the sheet material fed between the die 10 and the face plate 16. With the approach to 12, the crease 15 and the concave groove 17 can be creased.

  Further, as shown in FIG. 1, if the pin 2 and the coil spring 3 are fixed, when the pin 2 is pulled out from the bush 1, the coil spring 3 can be pulled out at the same time. It can be reused as a positioning member attached to another die.

  In the above embodiment, the cutting die 10 is fixed to the lower plate 12 and the face plate 16 is fixed to the upper plate 11. On the contrary, the cutting die 10 is fixed to the upper plate 11 via the chase 13, The face plate 16 may be fixed to the lower plate 12 via the cutting plate 14.

  In this case, an annular protrusion or the like that engages with the peripheral edge of the positioning hole 21 may be provided at the tip of the pin 2 so that the face plate 16 does not fall off from the pin 2 when starting the positioning operation.

  Further, the engaging protrusion 5 is provided on the outer periphery of the pin 2 and the guide groove 6 is provided on the peripheral wall of the bush 1. On the contrary, the engaging protrusion 5 is provided inward on the peripheral wall of the bush 1, A guide groove 6 may be provided on the outer periphery of 2 by cutting.

Exploded perspective view of a positioning member according to an embodiment of the present invention Schematic sectional view showing the state at the start of positioning work by the positioning member Schematic sectional view showing a state in which the face plate is in contact with the cutting plate Schematic sectional view showing a state where the same face plate is crimped to the cutting plate Schematic sectional view showing the state after positioning work Schematic sectional view showing the process of removing the pins Schematic sectional view showing the pin removed Schematic cross-sectional view showing the work process with a conventional positioning member

Explanation of symbols

P Positioning member 1 Bush 2 Pin 3 Coil spring 4 Flange 5 Engagement projection 6 Guide groove 6a Open groove 6b Opening 6c Axial extension 6d Stopping part 7 Hexagonal hole 10 Die 11 Upper board 12 Lower board 13 Chase 14 Cutting plate 15 Ruled line 16 face plate 17 concave groove 18 double-sided adhesive sheet 19 holding hole 20 pressing member 21 positioning hole

Claims (1)

In the positioning member for positioning the relative position of the punching die (10) fixed to one of the upper plate (11) and the lower plate (12) of the punching machine and the face plate (16) fixed to the other,
Bushing (1) to be inserted into the holding hole (19) formed in the punching die (10), and a positioning hole in which the tip portion is formed in the face plate (16) and is slidably inserted in the axial direction. The pin (2) is inserted into the pin (2), and the pin (2) is biased in the protruding direction with respect to the bush (1) by the elastic member, and the outer periphery of the pin (2) and the peripheral wall of the bush (1) One of these is provided with an engaging protrusion (5), and the other is provided with a guide groove (6) for guiding the engaging protrusion (5), and the engaging protrusion (5) is inserted into and removed from the guide groove (6). An open groove (6a) opened at one end, a circumferential flange (6b) serving as an intermediate path of the engagement protrusion (5), and an axial extension that allows the pin (2) to slide in the axial direction (6c) is formed in communication with each other, and a retaining portion (6d) is formed at the boundary between the flange portion (6b) and the axial extension portion (6c), where the engaging protrusion (5) is fitted and prevented from coming off. A positioning member characterized by that.

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