JP2013052428A - Press apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press apparatus that can prevent a guide member and a slide member from being damaged even when a slide is inclined.SOLUTION: The press apparatus includes: a first slide 40 for reciprocating an upper side upper mold 60 along a vertical direction; and guide posts 30, 30, 30, 30 for guiding the first slide 40. The first slide 40 includes: a die plate 41 to which the upper side upper mold 60 is mounted; and bearings 42, 42, 42, 42. The bearing 42 includes: an inner ring 42a having a spherically-shaped outer periphery; and an outer ring 42b having a spherically-shaped inner periphery corresponding to the outer periphery of the inner ring 42a. The inner ring 42a through which the guide post 30 penetrates, is configured to slide along a vertical direction on an outer periphery of the guide post 30. The outer ring 42b is fixed to a die plate 41 and configured to be relatively rotatable to the inner ring 42a while the inner periphery of the outer ring 42b and the outer periphery of the inner ring 42 come into contact with each other.

Description

  The present invention relates to a press apparatus that performs press processing on a workpiece.

2. Description of the Related Art Conventionally, a press device that performs press processing using a mold on a workpiece such as a steel plate is widely known (for example, see Patent Document 1).
The press device is configured such that a die fixed to a slide that slides on the outer peripheral surface of a columnar guide member such as a guide post is close to and separated from another die corresponding to the die. Has been.

  In such a press apparatus, an unbalanced load may be generated in the mold during workpiece pressing. When an uneven load is generated in the mold, the slide is inclined and the contact portion between the slide and the guide member may be damaged.

Here, with reference to FIG. 5, the problem which arises when the slide of a press apparatus inclines is demonstrated.
As shown in FIG. 5, the slide is a member that slides on the outer peripheral surface of a guide post that is a columnar guide member extending in the vertical direction, and includes a die plate and a guide bush.
The die plate is a plate-like member to which a mold is attached. A through hole through which the guide post is inserted is formed in the die plate, and a guide bush is fixed to the through hole.
The guide bush is a cylindrical member that is wrapped around the guide post so as to cover the outer peripheral surface of the guide post, and is configured to be slidable along the vertical direction on the outer peripheral surface of the guide post.

  When the slide configured as described above is tilted during the press working, the portion (indicated by a circle in FIG. 5) moved to be close to the guide post on the inner peripheral surface (sliding surface) of the guide bush. The part) rubs strongly against the outer peripheral surface of the guide post, and the guide bush and the guide post are damaged (galling occurs).

  As means for solving such problems, an elastic body such as a gas spring is provided between a pair of molds facing each other, or a sliding member such as a guide bush that slides on the outer peripheral surface of the guide member. It is conceivable to increase the length in the sliding direction. Thereby, the moment by an unbalanced load can be suppressed and it can control that a slide inclines. Therefore, damage to the guide member and the sliding member can be suppressed.

However, when the elastic body provided between the molds facing each other breaks down, it is difficult to stop the slide during the pressing process suddenly, so that the guide member and the sliding member are inevitably damaged.
Further, in a press device that needs to suppress the height (length in the vertical direction), such as a multistage press device in which a plurality of pairs of dies are provided along the vertical direction, the outer peripheral surface of the guide member is It is difficult to increase the length in the sliding direction of the sliding member that slides.

JP 2000-015496 A

  This invention makes it a subject to provide the press apparatus which can suppress damage to a guide member and a sliding member, even when a slide inclines.

  The press device according to the present invention includes a plurality of molds that constitute at least one processing unit for processing a workpiece, and the mold is attached, and at least for reciprocating the molds along the vertical direction. A press device comprising a single slide and a plurality of guide members formed in a column shape extending in a vertical direction and guiding the slide as a slide path of the slide, wherein the slide is the gold A mounting member to which a mold is attached, and a plurality of sliding members that are fixed to the mounting member and slide along the outer peripheral surface of the plurality of guide members along a vertical direction. An inner ring having a spherical outer peripheral surface and an outer ring having a spherical inner peripheral surface corresponding to the outer peripheral surface of the inner ring, and the inner ring is inserted through the guide member, and the outer peripheral surface of the guide member Along the top The outer ring is fixed to the mounting member, and is rotatable relative to the inner ring in a state where the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring are in contact with each other. Composed.

  In the press device according to the present invention, the processing section includes at least two, and at least one of the plurality of molds has a molding surface formed on each of an upper surface and a lower surface, and the two molding surfaces are formed. It is preferable that the portion to be formed is an intermediate mold constituted by one member.

  In the press device of the present invention, it is preferable that the attachment member to which the intermediate mold is attached is configured to sandwich the intermediate mold from the side.

  According to the press device concerning the present invention, even when a slide inclines, damage to a guide member and a sliding member can be controlled.

The figure which shows the press apparatus which concerns on 1st embodiment of this invention. The figure which shows the bearing as a sliding member. The figure which shows the motion of a bearing when a slide inclines. The figure which shows the press apparatus which concerns on 2nd embodiment of this invention. The figure which shows a mode that the slide in the conventional press apparatus inclined.

[First embodiment]
Below, with reference to FIG. 1, the multistage press apparatus 1 which is 1st embodiment of the press apparatus which concerns on this invention is demonstrated.
The multistage press apparatus 1 is a press machine in which a plurality of processing parts (two in the present embodiment) for processing a workpiece such as a steel plate are provided in the vertical direction. Press work at the same time.
For convenience of explanation, the vertical direction in FIG. 1 is defined as the vertical direction of the multistage press apparatus 1. The vertical direction of the multistage press device 1 coincides with the vertical direction.

  As shown in FIG. 1, the multistage press apparatus 1 includes a structure having an upper fixing portion 10, a lower fixing portion 20, guide posts 30, 30, 30, 30, a first slide 40, and a second slide 50, and two The upper stage side upper mold | type 60 and the upper stage side lower mold | type 70 which are a pair of metal mold | die, and the lower stage side upper mold | type 80 and the lower stage side lower mold | type 90 are comprised.

  First, a structure having the upper fixing part 10, the lower fixing part 20, the guide posts 30, 30, 30, 30, the first slide 40, and the second slide 50 will be described.

  The upper fixing part 10 and the lower fixing part 20 are substantially rectangular parallelepiped members. The upper fixing part 10 and the lower fixing part 20 are spaced apart from each other in the vertical direction, and are fixed via the guide posts 30, 30, 30, 30 so as to face each other.

  The guide posts 30, 30, 30, 30 are substantially columnar members extending in the vertical direction, and the first slide 40 and the second slide 50 are used as sliding paths of the first slide 40 and the second slide 50. It functions as a guide member for guiding. The guide posts 30, 30, 30, and 30 are configured to connect the four corners of the lower surface of the upper fixing portion 10 and the four corners of the upper surface of the lower fixing portion 20. That is, the upper ends of the guide posts 30, 30, 30, 30 are fixed to the four corners of the lower surface of the upper fixing portion 10, and the lower ends of the guide posts 30, 30, 30, 30 are the four corners of the upper surface of the lower fixing portion 20. And are fixed.

The first slide 40 is a member for reciprocating the upper stage side upper mold 60 attached to the first slide 40 along the vertical direction. The first slide 40 slides on the outer peripheral surface of the guide posts 30, 30, 30, 30 and functions as a slide of a general press device. The first slide 40 is disposed between the upper fixing part 10 and the lower fixing part 20.
The first slide 40 includes a die plate 41 and bearings 42, 42, 42, 42.

The die plate 41 is a rectangular plate material, and the plate surface is arranged in the vertical direction. The die plate 41 functions as an attachment member to which the upper side upper mold 60 is attached. An upper upper mold 60 is fixed to the lower surface of the die plate 41.
Four through holes for inserting the guide posts 30, 30, 30, 30 are formed along the vertical direction at the four corners of the plate surface of the die plate 41, and bearings 42, 42 are formed in the four through holes. -42 and 42 are provided.
The bearing 42 is formed so that the guide post 30 is inserted therethrough, and is configured to be slidable on the outer peripheral surface of the guide post 30. The detailed configuration of the bearing 42 will be described later.

The die plate 41 is connected to the upper fixing part 10 via a connecting part 41a.
The connecting portion 41 a is a toggle mechanism that connects the upper fixing portion 10 and the die plate 41. The connecting portion 41a is configured to expand and contract in the vertical direction by an actuator such as a hydraulic cylinder, and to move the die plate 41 in the vertical direction.
It is also possible to configure the die plate 41 so as to be movable in the vertical direction directly by an actuator such as a hydraulic cylinder without providing the connecting portion 41a in the multistage press device 1.

The second slide 50 is a member for reciprocating the upper and lower lower molds 70 and 80 attached to the second slide 50 along the vertical direction. The second slide 50 slides on the outer peripheral surface of the guide posts 30, 30, 30, 30 and functions as a slide of a general press device. The second slide 50 is disposed between the first slide 40 and the lower fixing portion 20.
The second slide 50 includes a die plate 51 and bearings 52, 52, 52, 52.

The die plate 51 is a rectangular plate material configured in substantially the same manner as the die plate 41 of the first slide 40, and is arranged with its plate surface directed in the vertical direction. The die plate 51 functions as an attachment member to which the upper lower mold 70 and the lower upper mold 80 are attached. An upper lower mold 70 and a lower upper mold 80 are fixed to the upper and lower surfaces of the die plate 51, respectively. The die plate 51 is supported by a spring (not shown) or the like, and is configured to reciprocate along the vertical direction in conjunction with the first slide 40.
Four through holes for inserting the guide posts 30, 30, 30, 30 are formed along the vertical direction at the four corners of the plate surface of the die plate 51, and bearings 52, 52 are formed in the four through holes. -52 and 52 are provided.
The bearing 52 is a member configured in substantially the same manner as the bearing 42 of the first slide 40. The bearing 52 is formed so that the guide post 30 is inserted therethrough, and is configured to be slidable on the outer peripheral surface of the guide post 30. The detailed configuration of the bearing 52 will be described later.

Next, the upper-stage upper mold 60 and the upper-stage lower mold 70, and the lower-stage upper mold 80 and the lower-stage lower mold 90, which are two pairs of molds, will be described.
These two pairs of molds are arranged along the vertical direction from the top in the order of the upper upper mold 60, the upper lower mold 70, the lower upper mold 80, and the lower lower mold 90 in order to process the workpiece. The two processing parts are configured. These two pairs of dies are configured to press the two workpieces simultaneously.
More specifically, in the upper processing section composed of the upper stage upper mold 60 and the upper stage lower mold 70, the workpiece corresponding to the upper processing section is pressed, and at the same time, the lower upper mold 80 and In the lower processing part constituted by the lower side lower mold 90, the work corresponding to the lower processing part is pressed.

  The upper stage side upper mold 60 is a mold having a molding surface formed on the lower surface, and is fixed to the lower surface of the die plate 41 in the first slide 40.

  The upper stage side lower mold 70 is a mold having a molding surface formed on the upper surface, and is fixed to the upper surface of the die plate 51 in the second slide 50. The molding surface of the upper stage side lower mold 70 is formed in accordance with the shape of the molding surface of the upper stage side upper mold 60.

  The lower-stage upper mold 80 is a mold having a molding surface formed on the lower surface, and is fixed to the lower surface of the die plate 51 in the second slide 50.

  The lower tier side lower mold 90 is a mold having a molding surface formed on the upper surface, and is fixed to the upper surface of the lower fixing portion 20. The molding surface of the lower stage side lower mold 90 is formed in accordance with the shape of the molding surface of the lower stage side upper mold 80.

  Below, with reference to FIG.2 and FIG.3, the bearing 42 of the 1st slide 40 and the bearing 52 of the 2nd slide 50 are demonstrated in detail.

  As shown in FIG. 2, the bearing 42 includes an inner ring 42a and an outer ring 42b.

The inner ring 42a is inserted into the guide post 30 and is configured to slide on the outer peripheral surface of the guide post 30 along the vertical direction. The outer peripheral surface of the inner ring 42a is formed in a spherical shape.
Specifically, the inner ring 42a has an outer shape in which the upper and lower parts of the sphere are cut along a plane perpendicular to the vertical direction, and the guide is extended from the center of the upper cut surface to the center of the lower cut surface. A through hole for inserting the post 30 is formed.

  The outer ring 42 b is formed in a substantially cylindrical shape, and is attached to a through hole formed in the die plate 41. The inner peripheral surface of the outer ring 42b is formed in a spherical shape corresponding to the outer peripheral surface of the inner ring 42a. The outer ring 42b is configured to be rotatable relative to the inner ring 42a in a state where the inner peripheral surface of the outer ring 42b and the outer peripheral surface of the inner ring 42a are in contact with each other.

As shown in FIG. 3, when an uneven load is generated in the mold in the multistage press device 1 and the first slide 40 is tilted, the outer ring 42 b fixed to the die plate 41 is moved as the die plate 41 tilts. It rotates along the outer peripheral surface of the inner ring 42a. Therefore, even when the first slide 40 is tilted, the inner ring 42a is not tilted, and the bearing 42 and the guide post 30 are prevented from being damaged by the inner circumferential surface of the inner ring 42a and the outer circumferential surface of the guide post 30 being rubbed strongly. Can do.
That is, the bending moment due to the uneven load generated in the mold in the multistage press device 1 is eliminated by the outer peripheral surface of the inner ring 42a and the inner peripheral surface of the outer ring 42b formed in a spherical shape, and the gap between the guide post 30 and the bearing 42 is eliminated. It is possible to prevent a concentrated load from being generated.

  In the present embodiment, the outer ring 42b of the bearing 42 is attached to the through hole formed in the die plate 41. However, the die plate 41 and the outer ring 42b can be configured as one member.

  The bearing 52 is configured in substantially the same manner as the bearing 42 of the first slide 40 and will not be described. However, even when the second slide 50 is tilted, the bearing 52 and the guide post 30 are similar to the bearing 42. Can prevent damage.

  In addition, as the bearing 42 and the bearing 52, it is possible to employ an existing spherical plain bearing.

  The press device in the present embodiment is a multi-stage press device 1 having a plurality of pairs of molds (upper side upper die 60 and upper side lower die 70, and lower side upper die 80 and lower side lower die 90). The present invention can also be applied to a press apparatus having a pair of molds.

[Second Embodiment]
Below, with reference to FIG. 4, the multistage press apparatus 100 which is 2nd embodiment of the press apparatus which concerns on this invention is demonstrated.
The multistage press apparatus 100 is a press machine in which a plurality of processing parts (two in the present embodiment) for processing a workpiece such as a steel plate are provided in the vertical direction. Press work at the same time.
For convenience of explanation, the up and down direction in FIG. 4 is defined as the up and down direction of the multistage press device 100, and the left and right direction in FIG. The up-down direction of the multistage press apparatus 100 corresponds to the vertical direction.
Moreover, below, the same code | symbol is attached | subjected to the part which is common in the multistage press apparatus 1 in the multistage press apparatus 100, and the description is abbreviate | omitted.

As shown in FIG. 4, the multistage press device 100 includes a structure having an upper fixing portion 10, a lower fixing portion 20, guide posts 30, 30, 30, 30, a first slide 40, and a second slide 150, and two The upper stage side upper mold | type 60, the intermediate | middle mold | type 170, and the lower stage side lower mold | type 90 which comprise one process part are comprised.
That is, the multi-stage press apparatus 100 has a multi-stage press apparatus in that it has the second slide 150 instead of the second slide 50 and has an intermediate mold 170 instead of the upper stage lower mold 70 and the lower stage upper mold 80. Different from 1.

The second slide 150 is a member for reciprocating the intermediate mold 170 attached to the second slide 150 along the vertical direction. The second slide 150 slides on the outer peripheral surface of the guide posts 30, 30, 30, 30 and functions as a slide of a general press device. The second slide 150 is disposed between the first slide 40 and the lower fixing portion 20.
The second slide 150 includes die holders 151 and 151 and bearings 52, 52, 52, and 52.

The die holders 151 and 151 are rectangular plate materials, and are arranged with their plate surfaces directed in the vertical direction. The die holders 151 and 151 function as attachment members to which the intermediate mold 170 is attached. The die holders 151 and 151 are fixed to the intermediate mold 170 with the intermediate mold 170 sandwiched from the left and right. The die holders 151 and 151 are supported by a spring (not shown) or the like, and are configured to reciprocate along the vertical direction in conjunction with the first slide 40.
The left die holder 151 is configured to be slidable on the left guide post 30, 30, and the right die holder 151 is configured to be slidable on the right guide post 30, 30. The intermediate mold 170 attached to the can be moved in the vertical direction.
Specifically, the left die holder 151 is formed with two through holes through which the left guide posts 30 and 30 are inserted, and the right die holder 151 has the right guide posts 30 and 30. Two through-holes are inserted along the vertical direction, and bearings 52, 52, 52, 52 are provided in these four through-holes.

The intermediate mold 170 is a mold manufactured as a single member by a full mold casting method or the like.
The upper surface of the intermediate mold 170 is formed in accordance with the shape of the molding surface of the upper upper mold 60, and the lower surface of the intermediate mold 170 is formed in accordance with the molding surface of the lower lower mold 90. Therefore, the upper stage side upper mold 60, the intermediate mold 170, and the lower stage side lower mold 90 constitute two processing parts. In other words, the upper stage side upper mold 60, the intermediate mold 170, and the lower stage side lower mold 90 function as two pairs of molds.
Further, the intermediate mold 170 is not attached to the die plate 51 like the upper stage lower mold 70 and the lower stage upper mold 80 but is sandwiched from the side (in the present embodiment, left and right) by the die holders 151 and 151. It is configured as follows.
With such a configuration, the height (vertical length) of the intermediate mold 170 can be suppressed, and the multistage press apparatus 100 can be reduced in size.

  Also in the multistage press apparatus 100, when an uneven load is generated in the intermediate mold 170 and the first slide 40 is inclined, the bearings 52, 52, 52, and 52 of the second slide 150 are used as in the multistage press apparatus 1, Damage to the bearing 52 and the guide post 30 can be prevented.

In the present embodiment, the entire intermediate mold 170 is configured as a single member, but at least a portion where the two molding surfaces are formed in the intermediate mold 170 may be configured as a single member.
In the present embodiment, one intermediate mold is provided. However, the number of intermediate molds is not limited, and it is sufficient that at least one intermediate mold is provided.

1 Multi-stage press machine (press machine)
30 Guide post (guide member)
40 First slide (slide)
41 Die plate (mounting member)
42 Bearing (sliding member)
42a Inner ring 42b Outer ring 50 Second slide (slide)
51 Die plate (mounting member)
52 Bearing (sliding member)
60 Upper stage upper mold (mold)
70 Upper lower mold (mold)
80 Lower side upper mold (mold)
90 Lower side lower mold (mold)
100 Multi-stage press machine (press machine)
150 Second slide (slide)
151 Die holder (mounting member)
170 Intermediate type

Claims (3)

A plurality of molds constituting at least one processing part for processing a workpiece;
The mold is mounted, and at least one slide for reciprocating the mold along a vertical direction;
A press device that is formed in a column shape extending in a vertical direction and includes a plurality of guide members that guide the slide as a slide path of the slide,
The slide includes an attachment member to which the mold is attached, and a plurality of sliding members that are fixed to the attachment member and slide along a vertical direction on the outer peripheral surface of the plurality of guide members,
The sliding member includes an inner ring having a spherical outer peripheral surface, and an outer ring having a spherical inner peripheral surface corresponding to the outer peripheral surface of the inner ring,
The inner ring is inserted through the guide member, and is configured to slide along the vertical direction on the outer peripheral surface of the guide member.
The outer ring is fixed to the mounting member, and is configured to be rotatable relative to the inner ring in a state where the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring are in contact with each other.
The press apparatus characterized by the above-mentioned. The processing part is composed of at least two,
At least one of the plurality of molds is an intermediate mold in which a molding surface is formed on each of an upper surface and a lower surface, and a portion where the two molding surfaces are formed is constituted by one member.
The press apparatus according to claim 1. The attachment member to which the intermediate mold is attached is configured to sandwich the intermediate mold from the side.
The press apparatus according to claim 2.

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