JPH0390230A - Mounting structure of metal mold in press - Google Patents

Abstract

PURPOSE: To surely fix the shanks having different diameters of the die on the press by providing plural supporting protrusions on the inner wall of the mounting hole of the press, and providing a pressing means to tighten and fix the shank of the die, which has been inserted into the mounting hole. CONSTITUTION: After loosening a bolt 15, and after inserting completely a pressing member 13 into a recessed place 12, the shank 8 of an upper die 7 is inserted into the mounting hole 10. Successively, by rotating the bolt 15, the pressing member 13 is projected into the mounting hole 10. Then the pressing protrusion 13a of the pressing member 13 is abutted on the front part of the outer peripheral surface of the shank 8, and the shank 8 is pressed backward. When the shank 8 is pushed backward, the rear part of the outer peripheral surface of the shank 8, is abutted on the tips of both supporting protrusions 11 of the mounting hole 10. Further, when rotating the bolt 15, the pressing protrusion 13a and both supporting protrusions 11 are abutted on the outer peripheral surface of the shank 8. After that, a nut 16 is tightened to prevent the bolt 15 from loosening. In addition, for the shank 8 which can be fixed in the mounting hole 10, it is acceptable if the outside diameter D1 of the shank 8 is smaller than the inside diameter D2 of the mounting hole 10, and is longer than a distance (d) between the tips of the supporting protrusions 11.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a structure for attaching a die for press processing to a press machine, and more specifically, it relates to a structure for attaching a die for press working to a press machine. , relates to a mounting structure for fixing to the mounting hole.

[Prior Art] Conventionally, as shown in FIG. 14, a press machine 35 of a type equipped with a mold consisting of an upper mold 31 and a lower mold 32 has been used to perform press working.

In the case type, there is a cylindrical shank 34 on the top surface of the upper mold 31.
is provided, and in order to fix this shank 34 to the press machine 35, the following mounting structure is adopted.

As shown in FIG. 15, a mounting member 37 is fixed to the main body 36 of the press 35, and a recess 37a having a semicircular cross section is formed on the front surface (lower surface in FIG. 15) of the mounting member 37. Further, a slide member 38 is disposed in front of the mounting member 37 so as to be movable in the front-rear direction, and a recess 38 having a semicircular cross section is provided on the rear surface.
a is formed. A mounting hole 39 for fixing the shank 34 of the upper die 31 is formed by both the recesses 37a and 38a.

A pair of left and right bolts 40 are inserted into the mounting member 37 and the slide member 38 in the front and back, and by tightening the nuts 43 on both bolts 40, the slide member 38
When the shank 34 is brought closer to the mounting member 37 side, the shank 34 is tightened and fixed on the inner wall surfaces of both the recesses 37a and 38a, as shown by the two-dot chain line in FIG. A push screw 41 is screwed into the slide member 38, and in addition to being tightened by the inner wall surfaces of the recesses 37a and 38a, the push screw 41 presses the shank 34.

[Problems to be Solved by the Invention] However, in the conventional mold mounting structure, the inner wall surfaces of both the front and rear recesses 37a, 38a forming the mounting hole 39 are brought into surface contact with the outer peripheral surface of the shank 34. The shank 34
Because of the structure in which the two are sandwiched, the following problems occur. That is, if the shank 34 is thinner than the attachment hole 39, the inner wall surfaces of both the front and rear recesses 37a, 38a cannot be brought into contact with the shank 34 and tightened in that state.

For this reason, in the past, a cylindrical collar 42 was attached to the shank 34, as shown by the two-dot chain line in FIG. 14, to increase the apparent outer diameter of the shank 34 to solve the problem. was.

However, in such a method, it is not only necessary to prepare many types of collars 42 in consideration of the sizes of the shank 34 and the mounting hole 39, but also to prepare the mold in the press machine 35.
The collar 42 must be attached and detached from the shank 34 each time the collar 42 is attached to the shank 34, and there is a problem in that the attachment and detachment work is complicated.

An object of the present invention is to provide a mold mounting structure for a press machine that can reliably fix the shanks of a plurality of types of molds having different thicknesses to the press machine without using a collar.

[Means for Solving the Problems] Therefore, in order to achieve the above object, the present invention provides a mold for press working with a shank, and this shank is inserted into a mounting hole of a press machine and locked. In the mold mounting structure for a press machine, the press machine is provided with a plurality of support protrusions on the inner wall of the mounting hole and a pressing means for tightening and fixing the shank of the mold inserted into the mounting hole. The gist of this article is the mounting structure of the mold.

A pair of left and right support slopes for supporting the shank of the mold inserted into the mounting hole may be provided on the inner wall of the mounting hole, and a pressing means may be provided for tightening and fixing the shank.

[Function] When the shank of the mold is inserted into the mounting hole and the pressing means is operated and moved in this state, the shank is pressed by the pressing means. Since the mounting hole is provided with a plurality of support projections, the shank pressed by the pressing means is clamped at three points by the support projections and the pressing means and tightened, regardless of the size of the outer diameter of the shank. Fixed.

In addition, when a support slope is provided, the shank is held between three points by the support slope and the pressing means to tighten the shank.

[Example] A first example embodying the present invention will be described below with reference to FIGS. 1 to 3.

As shown in FIG. 2, a table 3 is provided on the base 2 of the press 1, and a lower die 4 as shown by the two-dot chain line is mounted on the table 3. Further, a movable member 6 is provided on the main body portion 5 erected on the base 2 so as to be movable up and down, and an upper mold 7 shown by a two-dot chain line is attached to the movable member 6. A cylindrical shank 8 having an outer diameter D1 is integrally provided on the upper surface of the upper die 7, as shown in FIG. These upper and lower molds 7 and 4 constitute a mold for performing press working.

As shown in FIG. 1.3, the movable member 6 is provided with a mounting hole 10 that opens at its lower surface and extends upward, and has a substantially circular cross section. The inner diameter D2 of this mounting hole 10 is set larger than the outer diameter D1 of the shank 8, so that the shank 8 can be inserted into the mounting hole 10.

At the lower end of the movable member 6, the rear part of the inner wall of the mounting hole IO (
A pair of left and right support protrusions 11 are integrally provided in the upper part of FIG. 1 and the right part of FIG. 3). Both support protrusions 11 extend toward the axis O of the mounting hole 10, and are tapered at their distal ends, and their distal ends are formed into curved and rough surfaces.

A recess 12 extending forward is provided at the lower end of the inner wall of the mounting hole 10 in a portion facing the support protrusion 11, and a pressing member 1 serving as a pressing means is provided in the recess 12.
3 is slidably housed. A pressing protrusion 13a extending toward the axis O of the mounting hole 10 is integrally formed at the rear end of the pressing member 13. The pressing protrusion 13a, like the supporting protrusion 11, is formed to be narrow on the rear side, and has a curved and rough rear end.

The movable member 6 is formed with a screw hole 4 that extends in the front-rear direction and communicates the recess 12 with the outside of the movable member 6.
A bolt 15 is screwed into this screw hole 14. A rear end portion of the bolt 15 projects into the recess 12 and is rotatably connected to the pressing member 13. Therefore, by rotating the bolt 15, the pressing member 13 is slid within the recess 12, and the pressing member 13 can be projected into the mounting hole 10 or retracted into the recess 12. is possible. Note that the bolt 15 has a nut 16 to prevent loosening.
are screwed together.

When attaching the upper mold 7 to the movable member 6 of the press machine 1 of the present embodiment configured as described above, first loosen the bolts 15 and retract the pressing member 13 into the recess 12, and then Then, the shank 8 of the upper mold 7 is inserted into the mounting hole 10 from below the movable member 6.

Subsequently, the bolt 15 is rotated to cause the pressing member 13 to protrude into the mounting hole 10. Then, as shown by the solid line in FIG. 1.3, the pressing protrusion 13a of the pressing member 13 comes into contact with the front portion of the outer peripheral surface of the shank 8, and presses the shank 8 backward. When the shank 8 is pushed rearward, the rear portion of its outer peripheral surface comes into contact with the ends of both support protrusions 11 of the attachment hole IO. Furthermore, when the bolt 15 is rotated, the pressing protrusion 13a and both support protrusions 11 are brought into pressure contact with the outer peripheral surface of the shank 8. Once the shank 8 is pressed, tighten the nut 16 and tighten the bolt 1.
Make sure that 5 does not come loose.

In this embodiment, the pressing protrusion 13a and both left and right support protrusions 11 are provided to protrude toward the axis 0 of the mounting hole 10, and each of these protrusions 13a, 11 has a narrow tip and a curved surface. Since the shank 8 has a protrusion 1
3a and 11 are in line contact at three points, respectively. Therefore, the shank 8 of the upper die 7 is firmly tightened and fixed in the attachment hole 10.

In addition, in this embodiment, the tip ends of the pressing protrusion 13a and the left and right support protrusions 11, which are the contact parts with the shank 8, are all formed with rough surfaces, so the frictional resistance against the shank 8 is large, and these protrusions After the screws 13a and 11 are tightened and fixed, the shank 8 will not rotate or fall out of the mounting hole IO.

Incidentally, in this embodiment, as shown by the two-dot chain line in FIG. 1, a shank 8 that is thinner than the shank 8 can be attached. In this case, after inserting the shank 8 into the mounting hole IO in the same manner as described above, the bolt 15 is tightened to cause the pressing member 13 to protrude largely into the mounting hole 10. Then, the shank 8 is pressed against the three protrusions 13a and 11 and fixed in the attachment hole 10 in the same manner as described above. The shank 8 that can be fixed to the mounting hole 10 in this manner has an outer diameter D1 of itself that is an effective inner diameter D2 of the mounting hole 10 having the support protrusion 11.
Any material that satisfies the conditions of being smaller than the distance d and larger than the distance d between the tips of the support protrusions 11 (see FIG. 1) may be used.

As described above, in this embodiment, a plurality of types of shanks 8 having different outer diameters D1 can be installed in the mounting hole lO without using the collar 42.
Unlike conventional technology, it can be fixed in a large number of colors 4
There is no need to prepare 2 or attach it to the shank 8. Furthermore, in this embodiment, the shank 8 can be fixed in the mounting hole IO by an extremely simple operation of tightening the bolt 15, so that the work efficiency in mounting the upper die 7 to the press machine 1 is improved.

Next, a second embodiment of the present invention will be described based on FIG.

In this embodiment, a gripping recess 18 for gripping the shank 8 is formed in an inverted V shape on the front surface of the mounting member 17, forming a pair of left and right support slopes 18b for supporting the shank 8, and a recess 17a for gripping the shank 8. A slide member 19 is accommodated in the recess 17a so as to be slidable in the front and rear directions, and a bolt 21 is passed through the left and right sides of the slide member 19, and the tip of the bolt 21 is screwed into the mounting member 17. However, by rotating the nut 22, the position of the slide member 19 in the front-rear direction can be adjusted according to the outer diameter D1 of the shank 8.

Further, a substantially V-shaped recess 20 for gripping the shank 8 is formed on the rear surface of the slide member 19, and support slopes 20b are formed on both left and right sides of the recess 20. Further, the bolt 15 is screwed into the center of the slide member 19, and the rear end 15a presses against the shank 8, thereby fixing the shank 8 at a desired position.

In this second embodiment, a sliding member 19 whose position can be adjusted in the front-rear direction is used, and a pair of supporting slopes 18b and 20b are formed on the mounting member 17 and the sliding member 19, respectively, so that the outer periphery of the shank 8 having different outer diameters is used. The shank 8 can be securely fixed by pressing at four locations on the surface.

Next, a third embodiment of the present invention will be explained with reference to FIG.

In this third embodiment, a fixed support member 25 is disposed outside the mounting member 17 of the second embodiment described above, and the fixed support member 25 is
The mounting member 17 is mounted within the mounting member 17 so as to be adjustable in its position in the front and back direction, and the tip portions of bolts 26 that pass through both left and right sides of the mounting member 17 in the front and back direction are screwed into the fixing member 25, and further, the mounting member 17 A spacer 28 is interposed between the mounting hole 10 and the fixed support member 25, and by changing the thickness of the spacer 28, the position of the axis O of the mounting hole 10 can be adjusted. Therefore, in this third embodiment, the shank 8
The position of the axis O can be easily adjusted. In this embodiment, the upper end of a bolt 26 is rotatably connected to the fixing member 25 at a predetermined position.
The position of the mounting member 17 may be adjusted by screwing it into the mounting member 17. Further, the position of the mounting member 17 may be adjusted by the driving force of a cylinder or a motor.

It should be noted that the present invention is not limited to the configuration of the above-mentioned embodiments, and may be modified and embodied as desired without departing from the spirit of the invention, for example, as described below.

(1) As shown in FIG. 6, the pressing protrusion 1 of the pressing member 13
-3 A may be provided with two or more. In this way, the shank 8 can be more securely fixed in the mounting hole IO. In this case, the adjacent pressing protrusion 1
3a are preferably spaced apart in the circumferential direction of the mounting hole 10.

(2) As shown in FIG. 7, the number of support protrusions 11 on the inner wall of the attachment hole IO may be four or more.

Alternatively, the tip of the support protrusion 11 may be formed into a spherical shape so as to be in point contact with the shank 8.

(3) Omitting the pressing protrusion 13a in the above embodiment,
The shank 8 may be fixed only by the pressing member 13. Alternatively, as shown in FIG. 8, the pressing member 13 may be omitted and the pressing means may be constituted by the rear end portion 15a of the bolt 15.

(4) As shown in FIG. 9, the mounting member 17 and the slide member 19 are arranged in the main body 24 of the press 1, and a recess 18 formed on the front surface of the mounting member 17 and a recess formed on the rear surface of the slide member 19 are provided. The mounting hole 23 may be formed by the recess 20 . In this case, a pair of bolts 21 are inserted into both sides of the slide member 19, and the rear end portions of both bolts 21 protruding from the rear surface of the slide member 19 are fixed to the mounting member 17.

By tightening the nuts 22 on each bolt 21, the pressing projections 2 as pressing means provided on the inner wall of the recess 20 are tightened.
0a is moved toward the support protrusion 18a provided on the inner wall of the recess 18, and the shank 8 is tightened and fixed. In this case, as in the above embodiment, the support protrusion 18a and the pressing protrusion 20a
It is preferable to form the tip into a curved and rough surface.

(5) As shown in FIG. 10, a mounting hole 10 is formed inside the mounting member 17, and a pair of left and right support slopes 18b are formed on the side of the mounting hole 10 opposite to the bolt 15.

(6) As shown in FIG. 11, a mounting hole 10 is formed inside the mounting member 17, a recess 12 is formed in the front part of the mounting hole 10, and a pressing member 13 is formed at the tip of the bolt 15. established,
By rotating the bolt 15, the shank 8 is connected to the support slope 18b,
It should be pressed and fixed by the pressing member 13.

(7) As shown in FIG. 12, in place of the pressing member 13 in the above-mentioned separate version of FIG. 11, a pressing member 13 having pressing slopes 20,b is used.

(8) As shown in FIG. 13, the mounting member 29 having the support protrusion 11 is accommodated inside the mounting member 17 so that its position can be adjusted in the front and back direction, and the axial center position of the mounting hole IO is adjusted by the bolt 26 and nut 27. Make it adjustable.

(9) The attachment hole 10 may have an elliptical cross section or a polygonal shape such as a quadrangular shape other than a substantially circular cross section.

(lO) It is preferable that the support protrusion 11 protrudes toward the axis 0 of the attachment hole 10, but it may also protrude in a direction slightly deviated from the axis 0.

[Effects of the Invention] As detailed above, the present invention has the excellent effect that the shanks of multiple types of molds with different thicknesses can be reliably fixed to a press machine without using a collar. play.

[Brief explanation of drawings]

1 to 3 show a first embodiment embodying the present invention, FIG. 1 is a plan sectional view showing a state in which the shank is fixed to a movable member, FIG. 2 is a perspective view of the press machine, and FIG. 4 is a side sectional view showing the state in which the shank is fixed to the movable member, FIG. 4 is a plan sectional view showing the second embodiment of the invention, and FIG. 5 is a plan sectional view showing the third embodiment of the invention. 6 is a plan sectional view of the movable member showing separate pressing members, FIG. 7 is a plan sectional view of the movable member showing separate support protrusions, and FIG. 8 is a plan sectional view of the movable member showing separate pressing means. FIG. 9 is a plan sectional view showing a separate structure in which a mounting hole is formed by a recessed part of the mounting member and a recessed part of a slide member, FIGS. 10 to 13 are plan sectional views showing the separate parts of the present invention, and FIG. Partially cutaway front view of the mold, No. 15
The figure is a sectional view showing a conventional shank mounting structure. l...Press machine, 7...Upper mold constituting a part of the mold, 8...Shank, 10.23...Mounting hole, 11,
18a... Support protrusion, 13... Pressing member as pressing means, 15a... Bolt rear end portion as pressing means,
18... recess, 18b, 20b... support slope, 20
a... Pressing protrusion as pressing means. 2nd WJ Aji Voluntary Procedure Neho Seisho 21 Name of Invention Mounting structure of mold in press machine 3, Person making amendment Relationship with the case: Patent applicant Address 2-14 Miyaji-cho, Seki City, Gifu Prefecture Name Kim Yongyoshi Nationality Korea 4, agent address: 1-1, 2-12 Omiya-cho, Okigifu City, 500 Japan 0582 (65) -1810 (Representative) 058
2 (65)-1810 (Representative) Fax only 05
82 (66>-13396, Contents of amendment (1) The statement in the scope of claims column of the specification is amended as shown in the attached sheet. (2) The statement between lines 17 and 18 on page 5 of the specification In between, the following statement is added: ``Furthermore, the pair of left and right supporting slopes are formed on a mounting member that is supported so as to be adjustable in position in a direction perpendicular to the axis of the mounting hole, and the pressing means is attached to the mounting member. (3) “Tightening window” stated on page 6, line 8 of the specification.
Correct as follows. Further, when the pair of left and right supporting slopes is formed on a mounting member whose position can be adjusted in a direction perpendicular to the axis of the mounting hole, and the pressing means is mounted on the mounting member. The axial center position of the mounting hole can be adjusted to the desired position.'' (4) ``Kotoderu.'' written on page 12, line 15 of the specification has been amended to ``I can do it.'' To do. (5) The following statement will be added between lines 13 and 14 of page 16 of the specification. (11) Forming the support slope 1b into a gentle arc shape. ” “2. Claim 1. A shank (,
8), and the shank (8) is inserted and locked into the mounting hole (10, 23) of the press (1), in the mold mounting structure for a press machine, wherein the mounting hole (10, 23) Multiple support protrusions (1
1, 18a) and the same mounting holes (10, 23a) are provided.
) A mold mounting structure for a press machine, characterized in that a pressing means (13° 15a, 20a) is provided for tightening and fixing the shank (8) of the mold (7) inserted into the press machine. 2. Attach the shank (8) to the mold (7) for press working.
), and the shank (8) is inserted and locked into the mounting hole (10, 23) of the press (1), in a mold mounting structure for a press machine, wherein the inner wall of the mounting hole (10, 23) The same mounting holes (10, 23
) is provided with a pair of left and right support slopes (18b) that support the shank (8) of the mold (7) inserted into the mold (7), and a pressing means (13, 1) is provided for tightening and fixing the shank (8).
5a) A mold mounting structure in a press machine, characterized in that it is provided with: Making and making molds for molds]

Claims (1)

[Claims] 1. A shank (8) is attached to a mold (7) for press working.
), and the shank (8) is inserted and locked into the mounting holes (10, 23) of the press (1), in a mold mounting structure for a press machine, comprising: an inner wall of the mounting holes (10, 23); multiple support protrusions (1
1, 18a) and the same mounting holes (10, 23a) are provided.
) A mold mounting structure for a press machine, characterized in that it is provided with pressing means (13, 15a, 20a) for tightening and fixing the shank (8) of the mold (7) inserted into the press machine. 2. Attach the shank (8) to the mold (7) for press working.
), and the shank (8) is inserted and locked into the mounting holes (10, 23) of the press (1), in a mold mounting structure for a press machine, comprising: an inner wall of the mounting holes (10, 23); The same mounting holes (10, 23
) is provided with a pair of left and right support slopes (18b) to support the shank (8) of the mold (7) inserted into the mold (7), and a pressing means (13, 1) for tightening and fixing the shank (8).
5a) A mold mounting structure in a press machine, characterized in that it is provided with: