JP6420080B2 - Press machine - Google Patents

Description

  The present invention relates to a press apparatus. More specifically, the present invention relates to a press apparatus in which a large eccentric load may act.

  The press apparatus has a structure in which four uprights are interposed between a crown and a head and fastened by four tie rods. Since the up and down of the slide is guided by the upright, the give block is attached to the four corners of the slide, and the guide surface of the give block is in sliding contact with the upright guide surface.

And in the press apparatus which generate | occur | produces a big eccentric load, the shape of the said give block is made into the shape which surrounds the outer periphery whole surface of an upright, and has improved the guide capability.
However, in such a structure, when repairing the slide, it is necessary to remove the crown from the four uprights and pull the slide upward with an overhead crane or the like, which requires a great deal of labor.

Therefore, a structure capable of dividing the give block has been proposed as a technique for reducing such labor.
An example of such a prior art is Patent Document 1, in which four give blocks are attached to the press frame side or the upright side, and the four corners of the slide are guided by the give block. The give block is attached to the press frame or upright with bolts or the like.

  A similar conventional technique is shown in FIG. 7 in which the give block 101 is attached to the slide 100 side. As shown in the figure, the give block 101 is coupled to the side surface of the slide 100 with a bolt 102, and the two guide surfaces 103 and 104 are in sliding contact with the outer peripheral surface of each upright 105.

  However, in the prior art of FIG. 7, since the eccentric load generated in the press is supported by the guide surfaces 103 and 104, a Gibb reaction force that is a reaction force of the eccentric load is generated on the guide surfaces 103 and 104. The giving reaction force and the moment due to the giving reaction force are received by the giving block 101 and the bolt 102 to which the giving block 101 is fastened. It is difficult. Moreover, if sufficient strength and rigidity are inevitably given, it will be difficult to take practical measures such as considerably increasing the size. This also applies to the prior art disclosed in Patent Document 1.

JP 2011-224632 A

  An object of this invention is to provide the press apparatus which can ensure the rigidity with respect to eccentric load large enough in view of the said situation.

A press device according to a first aspect of the present invention is a press device for molding a workpiece, a bed, a crown disposed above the bed, a plurality of uprights connecting the bed and the crown, and the upright A slide that is guided and arranged to be raised and lowered, a drive source that drives the slide to move up and down, and a give block that is attached to the slide and is slidably guided to the upright. The guide block is guided by two guide surfaces facing each other across the upright , and the give block is disposed so as to be inclined with respect to the front-rear direction and the left-right direction of the press . the Gibb block is supported by the counter lock structure to said slide, said slide, and the slide body mold is mounted, front and rear of the slide body Consists of a side slide detachably attached to the side surface of the Gibb block is characterized in that it is supported by the counter lock structure with respect to the sliding body and the side slide.
According to a press device of a second invention, in the first invention, the side slide comprises a pair of a front side slide and a rear side slide, and each side slide is positioned with respect to the slide main body by a key and fastened by a bolt. It is characterized by being.
Pressing apparatus of the third invention, in the second shot bright, the Gibb block is characterized by being larger than the vertical dimension of the vertical size is the sliding body.
According to a fourth aspect of the present invention, in the press device according to the third aspect , the give block has a bolt insertion part for attaching the give block to the slide body, and two guide parts having guide surfaces. The guide portion is arranged separately in the vertical position of the bolt insertion portion.
The press apparatus according to a fifth aspect of the present invention is characterized in that, in any one of the first to fourth aspects, the give block is formed in a U-shape when seen in a plan view.
According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the give block is characterized in that the U-shape is integrally formed with the give block.

According to the first invention, the following effects are obtained.
a) Since the guide surface of the give block has an angle that intersects both the front-rear direction and the left-right direction of the press, it can be received by all the guide surfaces regardless of the unbalanced load in any direction. Can do. In this way, since all the guide surfaces of the give block support the uneven load and do not need to support only a part of the guide surfaces, the surface load is reduced and the rigidity against the uneven load is increased.
b) Since the give block is held by the seal structure, the external force acting on the give block is borne by the seal and does not act on the mounting bolt. For this reason, problems such as bolt breakage are unlikely to occur. Therefore, a sufficiently large rigidity against the eccentric load can be secured. Further, when the side slide is attached to the slide body, the size of the slide in the front-rear direction increases, and the resistance force against the eccentric load in the front-rear direction increases.
According to the second invention, the side slide is positioned by the key and then bolted to the slide main body, so that the integration of the slide main body and the side slide at a fixed position becomes strong and high rigidity can be exhibited.
According to the third aspect, since the vertical dimension of the give block is large, the vertical guide force is increased. For this reason, even if the unbalanced load is large, it can withstand this, and the slide can be held straight.
According to the fourth invention, the upper and lower guide portions of the give block come into contact with the upright, so that the resistance force against the inclination caused by the uneven load is increased and the slide can be held straight.
According to the fifth aspect of the invention, the U-shaped form in plan view surrounds the three surfaces of the upright, so that the two guide surfaces facing each other across the upright can be guided, and the rigidity to withstand the uneven load can be increased.
According to the sixth aspect of the present invention, since the U-shaped form of the give block is a single body, there is no member that easily breaks, such as a connecting bolt, so that high rigidity can be exhibited.

It is a top view around the slide 10 in the press apparatus which concerns on 1st Embodiment of this invention. It is a front view of the press apparatus of FIG. It is a side view of the press apparatus of FIG. It is the IV-IV arrow directional view of FIG. It is the VV sectional view taken on the line of FIG. It is a top view around the slide 10 in the press apparatus which concerns on 2nd Embodiment of this invention. It is explanatory drawing of the conventional press apparatus, Comprising: (A) is a top view around a slide, (B) is an enlarged view of a give block part.

Next, an embodiment of the present invention will be described with reference to the drawings.
First, the basic structure of the press apparatus of this embodiment is demonstrated.

  2 and 3, 1 is a bed, 2 is a crown, and 3 is an upright that connects the bed 1 and the crown 2. A tie rod 4 for screwing the bed 1 and the crown 2 is passed through the upright 3.

  A main cylinder 5 is fixed to the crown 2, and a slide 10 is attached to the rod 5a. When the main cylinder 5 expands and contracts, the slide 10 moves up and down. The main cylinder 5 is a “drive source” for moving up and down the slide as defined in the claims. The drive source may be a mechanism that rotates the eccentric shaft using a known motor, and converts the rotation of the eccentric shaft into a linear motion by a connecting rod, an eccentric sleeve, or the like.

  An upper die block 6 is attached to the lower surface of the slide 10 so that the upper mold can be fixed. On the other hand, a lower die block 7 is attached to the upper surface of the bed 1 so that the lower mold can be fixed. For this reason, the metal material can be press-molded by moving the slide 10 up and down.

A member that guides the raising and lowering of the slide 10 during press molding is the give block 20. There are four sets of the give blocks 20 attached to the four corners of the slide 10.
A return cylinder 8 is attached to the four sets of give blocks, and when the slide 10 is raised by contracting the main cylinder 5, the give block 20 is also raised.

The slide 10 shown in FIG. 1 includes a slide main body 11 and two side slides 12 and 12. However, the slide 10 does not have to be of such a divided type and may be an integral object. In the illustrated example, the slide 10 includes a slide main body 11 to which a mold is attached, and side slides 12 and 12 that are detachably attached to side surfaces of the slide main body 11 in the front-rear direction.
As described above, when the side slides 12 and 12 are attached to the slide body 11, the size of the slide 10 in the front-rear direction increases, and the resistance force against the eccentric load in the front-rear direction increases.

The side slide 12 includes a front side slide and a rear side slide. The side slides 12 are positioned with respect to the slide body 11 with keys and fastened with bolts. Thus, since the side slide 12 is positioned by the key and then bolted to the slide main body 11, the integration of the slide main body 11 and the side slide 12 becomes strong and high rigidity can be exhibited.
In the present specification, as shown in FIGS. 1 to 3, the y direction in and out of the material is described as the front-rear direction, and the x direction orthogonal thereto is described as the left-right direction. In this specification, the front-rear direction y and the left-right direction x are used in this sense.

Next, features of the present invention will be described.
As shown in FIG. 1, four sets of the give blocks 20 are used and attached to the four corners of the slide 10. When four sets of give blocks are individually indicated, the codes 20A, 20B, 20C and 20D are used. Each give block 20 is composed of a block body 24 that is formed in a U shape in plan view. This U-shaped form is a structure in which the left and right leg portions and the tip portions of the leg portions are connected to each other by a connecting portion. In addition, this U-shaped form may be one in which the divided pieces are fastened, but it is preferable that the U-shaped form is composed of a single piece because high rigidity can be exhibited.

  The U-shaped form in plan view of the give block 20 as shown in the figure surrounds the three surfaces of the upright 3, so that it can guide the two guide surfaces facing each other across the upright 3. That is, the guide surfaces 31 g and 32 g are attached to the outer surface of the upright 3, and the guide surfaces 21 g and 22 g are attached to the inner surface of the give block 20. Both guide surfaces (31g and 21g, 32g and 22g) are in contact with each other.

  The give block 20 is disposed such that guide surfaces 21g and 22g slidably contacting the guide surfaces 31g and 32g of the upright 3 are inclined with respect to the front-rear direction y and the left-right direction x of the press. In the illustrated example, they are arranged with an inclination angle of 45 ° with respect to the y direction and 45 ° with respect to the x direction. The inclination angle is not limited to 45 °, and may be selected in a range of about 30 ° to 60 °. For this reason, since the guide surfaces 21g and 22g of the give block 20 intersect both the front-rear direction y and the left-right direction x of the press, all the guide surfaces 21g, 22g takes it. As described above, since the load is supported by all the guide surfaces of the give blocks 20A, 20B, 20C, and 20D and only a part of the guide surfaces need not be supported, the surface load is reduced and the rigidity against the uneven load is increased.

  Further, the give block 20 is held in a stamping structure with respect to the slide 10 (that is, the slide main body 11 and the side slide). Further, the bolt 25 penetrating the block body 24 is screwed into the side surface of the slide body 11 and the side surface of the side slide 12, and the give block 20 is firmly fixed to the slide 10.

  The seal is composed of recesses 13 and 14 provided in the slide main body 11 and the side slide 12, and is finished so that the leg portion of the give block 20 fits perfectly. Since the give block 20 is held in the recesses 13 and 14 that constitute such an indicia, the external forces acting on the give block 20 are borne by the ingots 13 and 14 and do not act on the mounting bolts 25. For this reason, problems such as bolt breakage are unlikely to occur, and a sufficiently large rigidity against an eccentric load can be secured.

  As shown in FIG. 4, the give block 20 is formed such that its vertical dimension Hg is larger than the vertical dimension hs of the slide body 11. Thus, when the vertical dimension Hg of the give block 20 is large, the vertical guide force is increased. For this reason, even if the unbalanced load is large, it can withstand this and can hold the slide 10 straight.

  As shown in FIG. 5, the give block 20 has a bolt insertion portion 26 for attaching the give block 20 itself to the slide body 11, and two upper guide portions 27 and lower guide portions 28 having guide surfaces 21 g and 22 g. . The two guide portions 27 and 28 are arranged separately in the vertical position of the bolt insertion portion 26. Reference numeral 21g (22g) indicates the position of the guide surface. The guide surfaces 21g and 22g are provided on the upper and lower upper guide portions 27 and 28, respectively. In this way, the upper and lower guide portions 27 and 28 of the give block 20 are brought into contact with the upright 3, so that the resistance force against the inclination caused by the uneven load is increased, and the slide 10 is straightened. Can hold.

Next, a second embodiment of the present invention will be described.
As shown in FIG. 6, the slide 10 of the present embodiment is composed only of the slide body 11 and does not have a side slide. The give block 40 of this embodiment may be prepared as a block body 44 in which one leg portion 43L is long and the other leg portion 43S is short. And each leg part 43L, 43S is fastened to the slide main body 11 with the long volt | bolt 45L and the short volt | bolt 45S.
Of course, the leg portions 43L and 43S of the give block 40 (40A, 40B, 40C and 40D) are fitted and firmly fixed in the recesses 13 constituting the seal.

  Also in the give block 40 of the second embodiment, the external force acting on the give block 40 is borne by the stamp bar 13 and does not act on the mounting bolts 45L and 45S. For this reason, problems such as bolt breakage are unlikely to occur. Therefore, a sufficiently large rigidity against the eccentric load can be secured.

1 Bed 2 Crown 3 Upright 4 Tie rod 5 Main cylinder 10 Slide 11 Slide body 12 Side slide 13 Recess 20 Give block 25 Bolt

Claims (6)

A pressing device for molding a molded article,
Bed and
A crown disposed above the bed;
A plurality of uprights connecting the bed and the crown;
A slide that is guided by the upright and arranged to be movable up and down;
A drive source for driving the slide up and down;
A gib block attached to the slide and slidably guided by the upright; and
The give block has a guide surface guided by two guide surfaces facing each other across the upright ,
The give block is disposed so as to be inclined with respect to the front-rear direction and the left-right direction of the press ,
The give block is supported by an imprint structure with respect to the slide ,
The slide
A slide body to which a mold is mounted;
It consists of a side slide that is detachably attached to the side surface in the front-rear direction of the slide body,
The press apparatus, wherein the give block is supported by the stamp structure on the slide main body and the side slide . The side slide is
It consists of a pair of front side slide and rear side slide,
Each side slide relative to the slide body, the press apparatus according to claim 1, characterized in that it is fastened by a bolt while being positioned by the key. The press apparatus according to claim 2 , wherein the give block has a vertical dimension larger than a vertical dimension of the slide body. The give block has a bolt insertion portion for attaching the give block to the slide body, and two guide portions having a guide surface, and the two guide portions are divided into upper and lower positions of the bolt insertion portion. The press apparatus according to claim 3 , wherein the press apparatus is arranged. The press device according to any one of claims 1 to 4 , wherein the give block is formed in a U-shape in a plan view. 6. The press apparatus according to claim 5 , wherein the U-shaped form of the give block is integrally formed.

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