JP7132879B2 - Mold press device and mold press method - Google Patents

Description

The present invention relates to a mold press apparatus and a mold press method.

A large-sized press apparatus cannot be transported as it is because of its heavy weight. In order to facilitate transportation of a large-sized press device, a tie-rod-fastening split frame structure is adopted so that one press device can be split (see, for example, Patent Document 1). Generally, the press is divided into three frames: bed (lower), column (middle) and crown (upper). The bed, column, and crown are each provided with holes for inserting tie rods. The three divided frames are connected by tie rods inserted into the holes. Each tie rod is tightened by nuts at two upper and lower locations.

FIG. 8 is a diagram showing the procedure for assembling the press device S'. As shown in FIG. 8, when assembling the frame of the press device S' in order to install the press device S' at the installation site, the work is performed according to the following procedure. As shown in FIG. 8(a), the press device S' is divided into a crown 100', a column 200', and the like. The nut 53, the slide 12 and the tie rod 51 are also shown in FIG. 8(a). As shown in FIG. 8(b), the bed 300' is placed on the pit 500, the tie rod 51 is inserted into the hole 50h from above the bed 300', and the tie rod 51 is slipped into the pit 500 once. At this time, the lower end of the tie rod 51 is fastened with the nut 53 . The column 200' is arranged on the bed 300' while inserting the tie rod 51 into the hole 50h of the column 200' from above the tie rod 51 in a state where the tie rod 51 is slipped into the pit 500. - 特許庁8(b) also shows a cross-sectional view of the column 200' (and the hole 50h) and the tie rod 51. As shown in FIG. The crown 100' is arranged on the column 200' while inserting the tie rod 51 into the hole 50h of the crown 100' from above the tie rod 51 while keeping the tie rod 51 in the pit 500. - 特許庁After that, as shown in FIG. 8(c), the tie rod 51 that has been hidden in the pit 500 is lifted (in the direction of the arrow), and the upper end of the tie rod 51 is tightened with the nut 53. Then, as shown in FIG. In the conventional assembly procedure, the height h2 is required for assembly of the press device S'.

JP-A-59-007500

However, in the conventional assembly procedure, it is necessary to provide a pit 500 in order to secure a space for inserting the tie rod 51 when installing or disassembling the press device S'. Also, if the space for the pit 500 cannot be secured, the ceiling height of the factory must be higher than the height of the tie rod 51 and the crown 100', and the work of installing or disassembling the press device S' is required. For this reason, it is necessary to change the factory equipment, which is disadvantageous in terms of cost.

For example, as shown in FIG. 9A, the frame ( There is a method in which the hole provided in the column 200') is, for example, a U-shaped notch 50k. The size of the slide (or mold) area 12A is larger in the lateral direction than in the longitudinal direction, as shown in FIG. 9(a). Therefore, it is known that the deformation of the frame in the lateral direction is greater than that in the longitudinal direction during press working. Therefore, if the hole 50h is formed with a U-shaped notch 50k so that the tie rod 51 can be inserted from the side, the rigidity of the notch 50k is weakened. Note that O indicates the center of the press device S'.

FIG. 9(b) shows a front view of the press device S', and the two-dot chain line shows the deformation of each part of the bed 300', the column 200', and the crown 100' when the press load is applied. It is known that in the straight side frame press device S', when a press load is applied, the crown 100' deforms upward and the bed 300' deforms downward. Also, the column 200' is known to deform inwards. The deformation of the column 200' is also the deformation of the tie rod 51 inserted into the hole 50h, and the deformation of the tie rod 51 may reduce the rigidity of the frame. If the rigidity of the frame is lowered, there is a possibility that the accuracy of machining will be lowered. To reduce this deformation, it is conceivable to ensure the rigidity of the frame by, for example, increasing the plate thickness of the column 200'. However, if the thickness of the frame such as the column 200' is increased, the mass of the press device S' is increased, which also causes an increase in cost.

SUMMARY OF THE INVENTION It is an exemplary object of the present invention to provide a die pressing apparatus and a die pressing method that facilitate assembly and suppress column deformation. and

In order to solve the above problems, the present invention has the following gists.

[Purpose 1]
The mold press device of the present invention is
a slide for moving the upper mold of the mold for processing the object up and down;
a bolster that holds the lower mold of the mold facing the slide and paired with the upper mold;
a driving means for generating power for moving the slide up and down;
a plurality of tie rods;
a nut fastened to the tie rod;
a plurality of frames including column portions fastened by the plurality of tie rods and nuts;
A mold press device comprising
An opening is provided in the vertical direction of the column portion and a frame connected above the column portion and opened toward the outside of the mold press device, and the An insertion portion for inserting the tie rod into the opening,
The column section has a section modulus of a portion extending from the center of the tie rod toward the outside of the mold press device when the tie rod is inserted into the insertion portion. The insertion portion is formed so as to be larger than the section modulus of the facing portion.

[Purpose 2]
The column portion may be formed to have a U-shaped cross section.

[Purpose 3]
When the column part has a predetermined plate thickness, the distance from the center of the tie rod to the surface facing the inside of the mold press device is a, and the distance from the center of the tie rod to the surface where the opening is provided Let b be the distance between
b > a
It may be formed so as to be

[Purpose 4]
The column portion may be thicker at the portion forming the opening than at the portion facing the inside of the mold pressing device.

[Purpose 5]
The column section may have a protruding section that protrudes in a direction away from the opening at a portion forming the opening.

[Purpose 6]
The frame connected to the upper portion may be a crown portion.

[Purpose 7]
A bed section connected to the lower part of the column section,
The bed section may have the insertion section in a vertical direction from at least a predetermined position to an upper portion of the bed section.

[Purpose 8]
A die pressing method implemented using the die pressing apparatus according to any one of gists 1 to 7.

Further objects or other features of the present invention will be made clear by preferred embodiments described below with reference to the accompanying drawings.

According to the present invention, it is possible to provide a mold pressing device and a mold pressing method that facilitate assembly and suppress column deformation.

(a) A front view and (b) a top view showing the crown, column, and bed of the press device of the embodiment. BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the structure of the press apparatus of embodiment. (a) Cross-sectional view showing the configuration of the insertion portion of the column of the embodiment and front view of the column, (b) Cross-sectional view showing the insertion portion of the conventional example and front view of the column, (c) Conventional example with notch Sectional view showing the insertion part of the case and front view of the column Sectional drawing which shows the insertion part of embodiment FIG. 4 is a diagram for explaining the section modulus of the U-shape of the embodiment; (a) A diagram showing disassembled parts of the embodiment, (b) a diagram showing the state of assembly, (c) a diagram showing the press apparatus after assembly. (a) (b) Cross-sectional views showing the configuration of the insertion portion of the column of another embodiment Conventional example (a) Diagram showing disassembled parts, (b) Diagram showing how it is assembled, (c) Diagram showing the press device after assembly Conventional example (a) Cross-sectional view showing a case where the tie rod insertion portion is a U-shaped notch, (b) Front view showing deformation of the frame

[Embodiment]
(Overall configuration of press device)
FIG. 1 is a diagram for explaining a straight-side mold pressing device (hereinafter referred to as a pressing device) S of this embodiment. FIG. 1(a) is a front view of the press device S, and FIG. 1(b) is a top view of the press device S from above. In FIG. 1, arrows indicate the up-down direction, the left-right direction, and the front-rear direction. The frame of the press device S is roughly divided into three parts. That is, the press device S is divided into a crown 100, a column 200, and a bed 300 from top to bottom. The crown 100, the column 200 and the bed 300 are fastened by four tie rods 51 and eight nuts 53 inserted into four corners (that is, four corners) of the frame, as shown in FIG. 1(b).

The crown 100, the column 200 and the bed 300 are each provided with an insertion portion 50 for inserting a tie rod 51 therein. In this embodiment, the tie rod 51 is inserted from the side. More specifically, as indicated by the dashed arrow in FIG. 1(b), the tie rod 51 is inserted from the left side into the insertion portion 50 provided on the left side of the frame. A tie rod 51 is inserted from the right side into an insertion portion 50 provided on the right side of the frame. Details of the insertion portion 50 will be described later. In this manner, the tie-rod fastening type split frame is employed in the press device S of the present embodiment. The press device S also includes a slide 12 and a bolster 22 . One tie rod 51 is fastened by nuts 53 near the upper and lower ends thereof. A fastening portion between the tie rod 51 and the nut 53 is hereinafter referred to as a fastening portion.

(Detailed description of the press device)
FIG. 2 is a schematic diagram of the press device S of this embodiment. 2, the illustration of the tie rod 51, the nut 53, and the insertion portion 50 is omitted. The press device S will be described with reference to FIG. The press device S includes a drive motor 4 as drive means, a transmission mechanism 6, a crankshaft 8, a connecting rod 10, and a slide 12 inside and outside a housing 2 (which is also a frame). The press device S also has a controller 14 , a storage section 15 , a display section 16 and an input section 18 .

The drive motor 4 is, for example, a servo-controlled servomotor, and vertically moves the mold 3 to be described later via a transmission mechanism 6, a crankshaft 8, and a connecting rod 10 while controlling the amount and direction of rotation. The transmission mechanism 6 includes transmission members such as gears and belts, and transmits the rotation of the motor shaft of the drive motor 4 to the crankshaft 8 . A control signal to the drive motor 4 is sent from the controller 14 .

The crankshaft 8 and connecting rod 10 are for converting the rotational movement of the motor shaft transmitted by the transmission mechanism 6 into reciprocating movement (vertical movement in this embodiment). The rotation of the motor shaft causes the crankshaft 8 to rotate, and the rotation is transmitted to a connecting rod 10 having one end connected to the crankshaft 8 to move the connecting rod 10 up and down (up and down movement).

A slide 12 is connected near the other end of the connecting rod 10 . As the connecting rod 10 moves up and down, the slide 12 moves up and down along a gib (not shown). In the press device S, a bolster 22 is arranged so as to face the slide 12 . An upper mold 3a as a part of the mold 3 is attached to the surface of the slide 12 facing the bolster 22 (lower surface in this embodiment). A lower mold 3b that forms a pair with the upper mold 3a is mounted as part of the mold 3 on the surface of the bolster 22 facing the slide 12 (the upper surface in this embodiment).

The workpiece W is placed between the upper die 3a and the lower die 3b, and pressed by the upper die 3a and the lower die 3b. Specifically, the drive motor 4 rotates under the control of the controller 14 . Rotation of the drive motor 4 is transmitted to the connecting rod 10 via the transmission mechanism 6 and the crankshaft 8, and the slide 12 moves up and down. As the slide 12 moves downward, the upper die 3a is pressed against the lower die 3b, and the workpiece W is pressed. That is, in the press device S, the drive motor 4, the transmission mechanism 6, the crankshaft 8, the connecting rod 10, and the slide 12 constitute a press section. The transmission mechanism 6 is provided with a rotary encoder 25 which is rotation speed detecting means for detecting the rotation speed of the crankshaft 8 . Note that the rotary encoder 25 may be provided on the rotating shaft of the drive motor 4 .

A controller 14 as control means controls the press device S according to various programs stored in the storage unit 15 . The display unit 16 displays data indicating the state of the press device S. FIG. The input unit 18 is used to input data necessary for operating the press device S. FIG.

[Configuration of Tie Rod Insertion Portion]
FIG. 3 shows (a) a cross-sectional view showing the configuration of the insertion portion 50 of the column 200 of the embodiment and a front view of the column 200, (b) a cross-sectional view showing the insertion portion 50a of the conventional example and a front view of the column 200a, ( c) A cross-sectional view showing an insertion portion 50b with a conventional notch and a front view of a column 200b. A dashed-dotted line in the front view indicates the center of the tie rod 51 . 3A and 3B are diagrams for explaining the front and left columns of the four columns of the press device S (corresponding to the left front column in FIG. 9A).

(conventional insertion tube)
First, conventional insertion sections 50a and 50b will be described. A conventional column 200a shown in FIG. 3B is provided with an insertion portion 50a (corresponding to the hole 50h in FIG. 8) into which the tie rod 51 is inserted. The insertion portion 50a is formed by four surfaces including a left inner surface 50ail and a right inner surface 50air. Also, the column 200a has four surfaces including a left outer surface 50aol and a right outer surface 50aor. Let t be the distance between the inner surface 50ail and the outer surface 50aol or the distance between the inner surface 50air and the outer surface 50aor, in other words, the thickness of the column 200 . The insertion portion 50a is a hole vertically penetrating the column 200a, into which the tie rod 51 is inserted from above.

In FIG. 3B, the center of the column 200a and the center of the tie rod 51 are aligned. Here, the distance from the center of the tie rod 51 to the left outer surface 50aol is substantially equal to the distance from the center of the tie rod 51 to the right outer surface 50aor, and this distance is defined as a. In the conventional configuration shown in FIG. 3(b), as shown in the front view, the column 200a does not deform when a load (for example, several tons to several hundred tons) is applied, but as explained in FIG. The tie rod 51 cannot be inserted from the side (horizontal).

Therefore, FIG. 3(c) shows a conventional configuration in which the hatched portion 50d in the sectional view of FIG. 3(b) is notched so that the tie rod 51 can be inserted from the side (lateral). The insertion portion 50b is formed by three surfaces including the left inner surface 50bir, the left inner surface of which is notched, the hole and the notch are connected (corresponding to the notch 50k in FIG. 9(a)), and the right inner surface 50bir. ing. In addition, the column 200b has an opening formed by cutting a part of the left outer surface 50bol, and has three surfaces including the right outer surface 50bor and a partially cut outer surface 50bol. is doing.

The plate thickness of the column 200b is also t in FIG. 3(c). 3(c), the center of the column 200b and the center of the tie rod 51 are also aligned, and the distance from the center of the tie rod 51 to the left outer surface 50bol and the distance from the center of the tie rod 51 to the right outer surface 50bol are The distance is approximately equal to a.

In the conventional structure shown in FIG. 3(c), as shown in the front view, when a load is applied, the column 200b bends to the side where the notch is provided, that is, the side weak against the force, and the column 200b is deformed. occur. Thus, in the configuration of FIG. 3C, although the tie rod 51 can be inserted from the side (horizontal), the rigidity of the column 200b is reduced.

(Insertion portion of the present embodiment)
FIG. 3(a) shows the column 200 of this embodiment. The insertion portion 50 of the present embodiment is formed by three surfaces including a left inner surface 50ir which is notched, the hole and the notch are connected, and a right inner surface 50ir. In addition, the column 200 has an opening formed by partially cutting out the left outer surface 50ol, and has three surfaces including the right outer surface 50or and the partially cut outer surface 50ol. is doing. The opening of the insertion portion 50 is opened toward the outside of the press device S. As shown in FIG. The distance between the inner side surface 50ir and the outer side surface 50or, in other words, the plate thickness of the column 200 is the same t (predetermined plate thickness) as in the conventional case.

3A, the center of the column 200 and the center of the tie rod 51 do not match, and the center of the tie rod 51 is closer to the center of the press device S than the center of the column 200. In FIG. That is, the distance from the center of the tie rod 51 to the left outer surface 50ol differs from the distance from the center of the tie rod 51 to the right outer surface 50or. The distance from the center of the tie rod 51 to the right outer surface 50or is substantially equal to the above-described distance a, and the distance b is greater than the distance a (b >a).

In the configuration of this embodiment shown in FIG. 3(a), as shown in the front view, the column 200 does not deform when a load is applied. Thus, by configuring as in this embodiment, it is possible to insert the tie rod 51 from the side (horizontal) and prevent the rigidity of the column 200 from being lowered. Therefore, the rigidity can be increased without increasing the plate thickness t of the column 200, so that the weight can be reduced.

The front and left column 200 among the four columns 200 of the press device S has been described above. For the front and right columns 200, the description of FIG. 3(a) may be applied symmetrically. Also, for the rear and left columns 200, the description of FIG. 3(a) may be applied symmetrically. Furthermore, for the rear and right columns 200, the description of FIG. FIG. 4 is a cross-sectional view of the column 200 having the insertion portion 50 of the pressing device S of this embodiment. In any insertion portion 50, the inner distance a of the press device S is smaller than the outer distance b.

[Regarding section modulus]
FIG. 5 is a diagram for explaining the section modulus of the column 200 having the U-shaped insertion portion 50. As shown in FIG. 5 corresponds to a view in which the cross-sectional view of FIG. 3(a) is rotated 90 degrees to the right, and FIG. It is also marked with a symbol.

Here, the thickness (board thickness) of the notched upper side (left side in FIG. 3A) of the outer side surface 50ol is c/2. Let d be the size of the cutout portion (that is, the opening) of the outer surface 50ol, in other words, the inner surface 50ir on the lower side (the right side in FIG. 3A). The distance a from the center of the tie rod 51 to the outer surface _50or on the lower side (the right side in FIG. 3(a)) is e1. The distance _b from the center of the tie rod 51 to the upper (left side in FIG. 3(a)) outer surface 50ol is e2. Let t be the distance from the inner surface 50ir to the outer surface 50or, that is, the plate thickness of this portion. Let h be the distance from the center of the tie rod 51 to the inner side surface 50ir, that is, the distance a(e ₁ ) minus the plate thickness t. Let H be the distance from the outer surface 50ol to the outer surface 50or, that is, the sum of the distance a(e ₁ ) and the distance b(e ₂ ). Further, let B be the length of the outer surface 50or.

In this case, the cross-sectional area A of the U-shaped column 200 is expressed as follows.
A=H×B−d×(e ₂ +h)
In addition, the moment of inertia (geometrical moment of inertia) I applied to the column 200 is expressed as follows.
I=1/3×(B×e ₁ ³ −d×h ³ +c×e ₂ ³ )
Furthermore, the section modulus Z1 of the portion of the distance a and the section modulus Z2 of the portion of the distance b are expressed as follows.
Z1= _I /e1
Z2 ₌ I/e2

As shown in FIG. 3A, in the column 200 of the present embodiment, distance b(e ₂ )>distance a(e ₁ ). Also, since the plate thickness t of the column 200 is constant, c/2=t. In other words, this corresponds to making the outer section modulus Z2 larger than the inner section modulus Z1 in the insertion portion 50 of the column 200 . More specifically, in the present embodiment, with respect to the center of the tie rod 51, the section modulus Z2 of the portion facing the outside where the opening of the insertion portion 50 is provided is is larger than the section modulus Z1 of the portion facing the In other words, the column 200 is configured in a U-shape so that "outer section modulus">"inner section modulus". Accordingly, in this embodiment, the tie rod 51 can be inserted from the side (horizontal) and the rigidity of the column 200 can be prevented from being lowered.

[Procedure for assembling (or disassembling) the press]
FIG. 6 includes (a) a diagram showing disassembled parts, (b) a diagram showing how the apparatus is assembled, and (c) a diagram showing the press apparatus S after assembly. In this embodiment, the column 200 is formed with the insertion portion 50 described in FIG. 3A from top to bottom. The crown 100 also has the insertion portion 50 described with reference to FIG. 3A formed from top to bottom. On the other hand, in the bed 300, the insertion portion 50 explained in FIG. 3(a) is formed from a predetermined position to the upper portion (y2 in FIG. 3(b)). The bed 300 has an inserting portion formed only by a hole 50h that does not have an opening as in the conventional art from a predetermined position to the bottom (y1 in FIG. 3(b)).

As shown in FIG. 6, when assembling the frame of the press device S in order to install the press device S at the installation site, in the present embodiment, the work is performed according to the following procedure. As shown in FIG. 6(a), the press device S is divided into a crown 100, a column 200 and the like. The nut 53, the slide 12 and the tie rod 51 are also shown in FIG. 6(a).

As shown in FIG. 6B, this embodiment does not require pits. In this embodiment, the column 200 is placed on the bed 300 and the crown 100 is placed on the column 200 . With the respective insertion portions 50 of the bed 300, the column 200 and the crown 100 connected in the vertical direction, the tie rods 51 are moved laterally at the height shown in FIG. Insert into insert 50 as shown. Therefore, as described above, the bed 300 only needs to have the insertion portion 50 of the present embodiment formed in the portion y2. Although only the left tie rod 51 is shown in FIG. 6B, the procedure for inserting the right tie rod 51 is the same.

When the tie rod 51 is inserted into the insertion portion 50, the tie rod 51 moves downward along the hole 50h at the portion y1 shown in FIG. becomes possible. Also, a nut 53 is tightened near the upper end of the tie rod 51 projecting upward from the crown 100 . Insertion of the tie rods 51 is performed at four corners of the press device S. As shown in FIG.

As described above, as shown in FIG. 6(c), the assembly of the press device S in which the divided frames are fastened by the four tie rods 51 is completed. In the assembling procedure of this embodiment, the height h1 is required for assembling the press device S (see FIG. 6(a)). The height h1 is lower than the conventional height h2 (h1<h2). Thus, by using the insertion portion 50 of the present embodiment, a pit is not required and the ceiling of the factory does not need to be raised.

[Other embodiments]
(When plate thickness is different)
In the above-described embodiment, the case where the plate thickness t of the column 200 is uniform (thicknesses are substantially equal (c/2=t in FIG. 5)) has been described. A case where the thickness of the column 200 is different will be described with reference to FIG. The insertion portion 60 shown in FIG. 7(a) has a cutout on the left inner surface, and the hole and the cutout are connected to each other. It is formed by one face.

In addition, the column 200 has a left outer surface 60ol that is partially cut out to form an opening, and a right outer surface 60or, a rear outer surface 60ob, and a front outer surface 60of that are partially cut out. It has a curved outer surface 60ol. The distance between the rear inner surface 60ib and the rear outer surface 60ob and the distance between the front inner surface 60if and the front outer surface 60of, in other words, the plate thickness of this portion is t1. The plate thickness t1 corresponds to c/2 in FIG. 5 (t1=c/2). On the other hand, the distance between the right inner surface 60ir and the right outer surface 60or, in other words, the plate thickness of this portion is t2. The plate thickness t2 corresponds to t in FIG. 5 (t2=t). The plate thickness t2 is thinner than the plate thickness t1 (t2<t1).

Even in the insertion portion 60 as shown in FIG. 7A, deformation of the frame can be suppressed even if a press load is applied, as in FIG. 3A. 7(a), when the plate thickness t2 is 0 (t2≈0), when the distance a and the distance b are substantially equal (a≈b), the tie rod 51 The rigidity of the column 200 outside the center and the rigidity of the column 200 inside the center of the tie rod 51 are substantially equal.

(When there is a protrusion in the notch)
A case where the cutout portion of the column 200 has a protrusion formed by bending the cutout portion will be described with reference to FIG. 7B. The insertion portion 70 shown in FIG. 7B has a cutout on the left inner surface, and the hole and the cutout are connected to each other. It is formed by one face.

In addition, the column 200 has a left outer surface 70ol that is partially cut out to form an opening, and a right outer surface 70or, a rear outer surface 70ob, and a front outer surface 70of that are partially cut out. It has a curved outer surface 70ol. Here, in FIG. 7B, the column 200 has protrusions 70C that protrude a distance C further rearward and further forward from the rear outer surface 70ob and the front outer surface 70of, respectively. The projecting portion 70C can also be said to be a bent portion obtained by bending the U-shaped opening of the column 200 outward. Note that the plate thickness of the column 200 in FIG. 7B is uniform at t. However, as shown in FIG. 7(a), the plate thicknesses may be different such that t1 and t2 (t1>t2).

In the insertion portion 70 as shown in FIG. 7(b), deformation of the frame can be suppressed even if a press load is applied, as in FIG. 3(a). In addition, in the configuration having the protruding portion 70C like the insertion portion 70 in FIG. The rigidity of column 200 is greater than the rigidity of column 200 inside from the center of tie rod 51 .

The front and left column 200 among the four columns 200 of the press device S has been described above. However, for the front and right columns 200, the description of FIG. 7 may be applied symmetrically. Also, for the rear and left columns 200, the description of FIG. 7 may be applied symmetrically. Furthermore, for the rear and right columns 200, the description of FIG. 7 may be applied symmetrically and symmetrically.

7(a) and 7(b), the section modulus of the opening side (outer side) of the insertion portions 60 and 70 with respect to the center of the tie rod 51 is The section modulus of the side (inner side) of the pressing device S of 60 and 70 can be made greater than or equal to that of the section modulus. 7A and 7B, the tie rod 51 can be inserted from the side (horizontal) and the rigidity of the column 200 can be prevented from decreasing. Therefore, the rigidity can be increased without increasing the plate thickness of the column 200, so that weight reduction can be achieved. Furthermore, the height required for assembling the press device S can be made lower than before.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these, and various modifications and changes are possible within the scope of the gist, such as the following modifications. .

In this embodiment, the press device S is divided into three frames, but the number of divisions is not limited to three, and other divisions may be used. In this case, the insert portion 50 of the present invention is formed from top to bottom in the frame arranged above the column.

Further, in the embodiment, the insertion portion of only the hole 50h having no opening unlike the conventional art is provided from the predetermined position to the lower portion of the bed 300 (y1 in FIG. 6(b)). However, the bed 300 may also have the insert portion 50 of the present invention formed from top to bottom. As a result, the height required for assembling the press device S can be further reduced.

As described above, according to the embodiments, it is possible to provide a die pressing device and a die pressing method that facilitate assembly and suppress column deformation.

2 Housing 3 Mold 3a Upper mold 3b Lower mold 4 Drive motor 6 Transmission mechanism 8 Crankshaft 10 Connecting rod 12 Slide 12A Slide area 14 Controller 15 Storage unit 16 Display unit 18 Input unit 22 Bolster 25 Rotary encoder 50 Insertion unit 50a Insertion unit 50ail inner surface 50air inner surface 50aol outer surface 50aor outer surface 50b insertion portion 50bir inner surface 50bol outer surface 50bor outer surface 50d portion 50h hole 50ir inner surface 50k notch 50ol outer surface 50or outer surface 51 tie rod 53 nut 60 insertion portion 60ib inner surface 60if inner surface 60ir inner surface 60ob outer surface 60of outer surface 60ol outer surface 60or outer surface 70 insertion portion 70C protrusion 70ib inner surface 70if inner surface 70ir inner surface 70ob outer surface 70of outer surface 70ol outer surface 70or outer surface 100 crown 100' crown 200 Column 200' Column 200a Column 200b Column 300 Bed 300' Bed 500 Pit S Press device S' Press device W Work

Claims (8)

a slide for moving the upper mold of the mold for processing the object up and down;
a bolster that holds the lower mold of the mold facing the slide and paired with the upper mold;
a driving means for generating power for moving the slide up and down;
a plurality of tie rods;
a nut fastened to the tie rod;
a plurality of frames including column portions fastened by the plurality of tie rods and nuts;
A mold press device comprising
An opening is provided in the vertical direction of the column portion and a frame connected above the column portion and opened toward the outside of the mold press device, and the An insertion portion for inserting the tie rod into the opening,
The column section has a section modulus of a portion extending from the center of the tie rod toward the outside of the mold press device when the tie rod is inserted into the insertion portion. A mold press device, wherein the insertion portion is formed so as to have a section modulus larger than that of the facing portion. 2. The mold press apparatus according to claim 1, wherein the column portion is formed to have a U-shaped cross section. When the column part has a predetermined plate thickness, the distance from the center of the tie rod to the surface facing the inside of the mold press device is a, and the distance from the center of the tie rod to the surface where the opening is provided Let b be the distance between
b > a
3. The mold press apparatus according to claim 2, wherein the mold press apparatus is formed such that: 3. The mold press according to claim 2, wherein the column portion is thicker at the portion forming the opening than at the portion facing the inside of the mold press device. Device. The die press according to any one of claims 1 to 4, wherein the column portion has a projecting portion projecting in a direction away from the opening at a portion forming the opening. Device. 6. The die press apparatus according to any one of claims 1 to 5, wherein the frame connected to the upper portion is a crown portion. A bed section connected to the lower part of the column section,
7. The mold press apparatus according to any one of claims 1 to 6, wherein the bed portion has the insertion portion in a vertical direction from at least a predetermined position to an upper portion of the bed portion. A die pressing method implemented using the die pressing apparatus according to any one of claims 1 to 7.

Images