JP3343966B2 - Press machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press machine in which one of a pair of dies arranged opposite to each other is movable with respect to the other dies. The present invention relates to a press having an improved structure for mounting a die and an improved structure for moving the die.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a conventional press.
1 shows the structure of an underdrive press. Press machine 1
Is configured such that the crankshaft 2 is rotated in one direction by a drive source (not shown). A flywheel 3 is mounted near one end of the crankshaft 2, and a crank 4 is mounted in the center. By rotating the crankshaft 2, the movable plate 5 arranged below can be moved vertically by the crank 4.

On the other hand, a movable plate 5 has a slide shaft 6
a to 6d are fixed, and the slide shafts 6a to 6d are fixed.
d is extended above the movable plate 5 and has a fixed bed 7.
Penetrates. The fixed bed 7 is made up of other members (not shown)
, Thereby fixing its height position. The slide shafts 6a to 6d penetrate the fixed bed 7, but are inserted into through holes provided in the fixed bed 7 so that the slide shafts 6a to 6d can move vertically with respect to the fixed bed 7. On the upper surface of the fixed bed 7, one mold 8a is fixed.

At the upper ends of the slide shafts 6a to 6d,
The ram 9 is fixed. On the lower surface of the ram 9, the other mold 8b that forms a pair with the above-described mold 8a is fixed.

Accordingly, in the press 1, the movable plate 5 is moved in the vertical direction by rotating the crankshaft 2, and the movable plate 5 is moved in the vertical direction by the slide shaft 6a. Ram 9 connected through ６6d
Is moved up and down. As a result, the mold 8a attached to the fixed bed 7 and the mold 8b attached to the lower surface of the ram 9 are moved closer to or away from each other, and press is performed. In this case, since the press working is performed by the dies 8a and 8b, the dies 8b are moved between a state where the dies 8b are in contact with the dies 8a and a state where the dies 8b are separated upward as illustrated.
The moving amount of the movable plate 5 is selected by the crank 4 so that can move.

The press machine 1 has a structure in which a movable plate 5 and a driving means for moving one of the dies 8b in the vertical direction are arranged below the dies 8a and 8b. Machine.

[0007]

In the press 1, when the dies 8a and 8b are mounted, the fixed bed 7 and the ram 9 are fixed.
The molds 8a and 8b are slid from the side into the space between them, and the molds 8a and 8b are fixed to the fixed bed 7 and the ram 9, respectively. When the molds 8a and 8b are repaired or replaced, the molds 8a and 8b are
The a and 8b had to be removed from the fixed bed 7 and the ram 9 and then moved to the side from the space between the fixed bed 7 and the ram 9 and removed.

In mounting and removing the dies 8a and 8b as described above, in the press 1, four slide shafts 6a to 6d are arranged around the dies 8a and 8b so as to extend in the vertical direction. In addition, there has been a problem that attaching and detaching the molds 8a and 8b is very complicated. That is, while paying attention so as not to contact the slide shafts 6a to 6d,
The dies 8a and 8b had to be moved through the narrow space between the points d.

In addition, in the press 1, the dies 8a, 8b
Around four slide shafts 6a-
Since 6d had to be arranged, the overall shape of the press 1 had to be large. The object of the present invention is
An object of the present invention is to provide a press capable of easily mounting and removing a mold and reducing the size of the structure around the mold.

[0010]

According to the present invention, there is provided a press machine comprising: a fixed bed whose position is fixed; a mold attached to one main surface of the fixed bed; and a mold fixed to the other main surface of the fixed bed. A movable plate arranged, the other mold used in combination with the one mold, and arranged to face the one mold on one main surface of the fixed bed; and A connecting member connecting the movable plate and the other mold so that the plate and the other mold are moved in the same direction, and a connecting member provided on the other main surface side of the fixed bed;
It is characterized by comprising a guide for guiding the movement of the moving plate, and a driving means connected to the movable plate such that the movable plate is moved toward or away from the fixed bed. Also book
In a specific aspect of the invention, the connecting member is formed of a plurality of members.
At least on one main surface side of the fixed bed.
Is formed detachably.

[0011]

According to the press of the present invention, the connecting member allows
The mold on the side to be moved with respect to the movable plate is directly connected. Therefore, the mold on the moving side can be easily removed from the press simply by releasing the connection structure with the connection member. Also, at the time of attachment, the mold can be easily attached only by fixing the mold on the moving side to the connecting member. In order to be able to easily attach and detach the moving-side mold, the fixed-side mold facing the moving-side mold is also attached and detached after the moving-side mold is attached and detached. Removal can be done easily.

[0012] Further, since the movable mold is connected to the connecting member and is configured to be close to and separated from the other mold, the movable mold is provided around the pair of molds. Since no other connecting member is required to move the mold, the structure around the mold can be reduced in size.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below with reference to the drawings to clarify the present invention. FIG. 1 is a partially cutaway perspective view showing a press according to an embodiment of the present invention.

The press 11 has a rotary actuator 12 as a driving means below. The rotary actuator 12 obtains a rotational driving force by rotating a rotating shaft, in which a plurality of vanes are radially fixed, in a forward or reverse direction by compressed air. The rotary shaft of the rotary actuator 12 has a crankshaft 1
The crankshaft 13 is rotated by driving a rotary actuator 12. A crank 14 is attached to the center of the crankshaft 13, and the crank 14 connects the crankshaft 13 and the movable plate 15. That is, the movable plate 1 is moved by the crank 14 so that the movable plate 15 can move up and down with the rotation of the crankshaft 13.
5 and the crankshaft 13 are connected.

On the other hand, reference numeral 16 denotes a base plate which is arranged or fixed on the floor or on another device. On the base plate 16, a plurality of posts 17a to 17
c is erected, and at the upper ends of the posts 17a to 17c,
The fixed bed 18 is fixed. Therefore, the fixed bed 18 is fixed at a fixed height position with respect to the base plate 16 so that the height does not move.

In a space surrounded by the posts 17a to 17c, a plurality of slide shafts 19a to 19d are arranged so as to extend in a vertical direction. The lower ends of the slide shafts 19a to 19d are fixed to the base plate 16. Further, the slide shafts 19a to 19d
It extends upward through the movable plate 15 described above,
The movable plate 15 is arranged so as to be able to move vertically in parallel with the slide shafts 19a to 19d as guides. The upper ends of the slide shafts 19 a to 19 d are fixed to the fixed bed 18.

On the movable plate 15, bar-shaped connecting members 20, 21 are erected in a space surrounded by the slide shafts 19a to 19d. Connecting members 20, 21
Extend upward through a through-hole provided in the fixed bed 18. Therefore, since the connecting members 20 and 21 are merely inserted through the through holes provided in the fixed bed 18, the connecting members 20 and 21 are arranged to be vertically movable with respect to the fixed bed 18.

A mold 22 to be moved is fixed to the upper ends of the connecting members 20 and 21. In addition, fixed bed 1
A fixed-side mold 23 is fixed to the upper surface of 8.

The mold 22 on the moving side includes connecting members 20 and 21.
By moving the movable plate 15 in the vertical direction, the mold 22 is moved in the vertical direction. The amount of movement in the up and down direction is determined by the mold 2
2 is in a state between the state where the mold 2 is in contact with the mold 23 and the state where the mold 22 is away from the mold 23 (the state shown in FIG. 1).
Are selected to be mobile.

FIG. 2 shows the details of the connection structure between the mold 22 and the connection members 20 and 21. As shown in FIG. 2 (a), connecting members 20 and 21 are screws 20 a and 21 a respectively inserted through through holes provided in the mold 22 from the upper surface of the mold 22.
, First cylindrical bodies 20b and 21b, and second cylindrical body 20
c, 21c. The screws 20a and 21a are each formed with a thread at the lower end, while the screws 20a and 21a are formed on the inner peripheral surfaces of the second cylindrical bodies 20c and 21c.
A female screw is formed to be screwed with a screw thread formed at the tip of.

The first cylindrical bodies 20b and 21b are formed to have a size in which the screws 20a and 21a are inserted. The first cylindrical bodies 20b and 21b are
, The mold 23 and the fixed bed 18 are inserted into through holes. Further, the second cylindrical body 20
The lower ends of c and 21c are fixed to the movable plate 15 shown in FIG.

Therefore, in FIG.
a and 21a are rotated, and the threads at the tips of the screws 20a and 21a are engaged with the second cylindrical bodies 20c and 21c, so that the second cylindrical bodies 20c and 21c and the movable plate 15 (see FIG. 1). ) Is connected to the mold 22. FIG. 2B shows the details of the connection structure between the first and second cylindrical bodies 20b and 20c and the screw 20a.

Returning to FIG. 1, the press machine 11 drives the rotary actuator 12 to
2 is configured to be moved up and down between a top dead center and a bottom dead center. That is, by driving the rotary actuator 12, the crankshaft 13 is rotated in the forward direction or the reverse direction, and accordingly, the movable plate 15 moves up and down in accordance with the amount of movement between the top dead center and the bottom dead center. Be moved. Since the movable plate 15 is connected to the mold 22 via the connecting members 20 and 21, the mold 22 is moved together with the movable plate 15. As a result, with respect to the mold 23 attached to the upper surface of the fixed bed 18, the mold 22 is moved between a state in which the mold 22 is moved upward (FIG. 1) and a state in which the mold 22 contacts the mold 23. , A press takes place.

The attachment and detachment of the molds 22 and 23 are performed as follows. First, a step of removing the molds 22 and 23 from the state shown in FIG. 1 will be described. FIG.
Loosen the screws 20a and 21a shown in FIG.
Unscrew the a and 21a from the second cylindrical bodies 20c and 21c. As a result, the mold 22 can be removed from the press machine 11 by pulling the mold 22 upward or by pulling the mold 22 upward after pulling out the screws 20a and 21a. Thereafter, the first cylindrical bodies 20b and 21b are pulled upward, and then the mold 23 is pulled out.
Is removed from the fixed bed 18.

As described above, when the dies 22 and 23 are removed, after the screws 20a and 21a of the connecting members 20 and 21 are loosened, no other members exist around the dies 22 and 23. The dies 22, 23 can be easily removed. In the conventional example shown in FIG. 3, the dies 8a, 8b
, The four slide shafts 6a to 6d are arranged around the molds, so that the molds 22 and 2 pass through the narrow space between the slide shafts 6a to 6d when removing the molds 8a and 8b.
In the present embodiment, the slide shaft is disposed only below the fixed bed 18 and does not exist on the sides of the dies 22 and 23. , 23 can be easily removed.

Also, when mounting, the mold 23 only needs to be mounted on the fixed bed 18, and the connecting members 20 and 21 need only be connected to the mold 22 in the reverse manner. Since there is no slide shaft around the part, the mounting operation can be easily performed.

In the above embodiment, the connecting members 20 and 21
Although the mold 23 on the fixed side was inserted and extended upward,
The connecting members 20 and 21 may be arranged so as to extend in the vertical direction on the side of the mold 23. Connecting members 20, 2
Even when the mold 1 is arranged to extend in the vertical direction on the side of the mold 23, the attaching and detaching of the mold 22 on the moving side can be easily performed as in the case of the above embodiment.

In the above embodiment, the connecting members 20 and 2
Although two connecting members 20 and 21 are shown as 1, three or more connecting members may be provided according to the size and shape of the mold. However, in order to move the mold 22 in the vertical direction, it is necessary to provide a plurality of connecting members.

In the above embodiment, the movable plate 15 is guided by the plurality of slide shafts 19a to 19d so as to be able to move in parallel. However, in order to guide the parallel movement of the movable plate 15, another guide is required. A member may be used. For example, a plurality of guide plates extending in the up-down direction in contact with a plurality of side surfaces of the movable plate 15 are attached to the base plate 16 and the fixed bed 1.
8 to guide the parallel movement of the movable plate 15.

Further, the present invention relates to a press in which a movable plate connected to a driving means is arranged on one side and dies 22 and 23 are arranged on the other side with respect to a fixed bed 18 whose position is fixed. And the movable plate 15 and the mold 22 as described above.
Since there is a characteristic in the connection structure with the above, other structures such as a structure for driving the movable plate 15 are not particularly limited. That is, the structure for moving the movable plate 15 in the vertical direction is not limited to the structure using the rotary actuator 12 and the crank 14. For example, the movable plate 15 may be directly moved vertically by an air cylinder or a hydraulic cylinder. Also,
Instead of the crank 14, the driving means and the movable plate 15 may be connected via another connecting mechanism. Further, the drive means is not limited to the rotary actuator, and any drive means such as the above-described air cylinder, hydraulic cylinder, or motor can be used.

[0031]

According to the present invention, the movable mold is directly connected to the movable plate moved by the driving means via the connecting member. Therefore, a ram is not required to support the moving mold used in the conventional example. Further, since the movable mold is directly connected to the movable plate by the connecting member, there is no need to arrange an extra member such as a slide shaft around the movable die. Therefore, the structure around the mold can be simplified, and the overall shape of the press can be reduced.

Further, since no extra member such as a slide shaft is arranged around the mold, the mold can be easily removed and attached. Therefore, the assembling work and the repairing work of the mold can be performed quickly and easily.

Further, since the moving mold is directly connected to the connecting member and does not require a ram, the inertia weight of the moving is reduced, thereby moving the mold by using a small power driving means. Can be. Therefore, the press machine can be made smaller even with the downsizing of the driving means,
In addition, the cost of the press can be reduced, and the noise can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a press according to an embodiment of the present invention.

FIGS. 2 (a) and 2 (b) are partially cutaway enlarged cross-sectional views for explaining a connection structure by a connection member in a press according to an embodiment.

FIG. 3 is a perspective view showing a conventional press machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Press machine 12 ... Rotary actuator as a drive means 15 ... Movable plate 18 ... Fixed bed 20,21 ... Connecting member 22,23 ... Mold

Claims (2)

(57) [Claims] A fixed bed whose position is fixed; one mold attached to one main surface of the fixed bed; a movable plate arranged on the other main surface side of the fixed bed; The other mold, which is used in combination with a mold and is arranged to face the one mold on one main surface of the fixed bed, is the same as the movable plate and the other mold. A connecting member for connecting the movable plate and the other mold so as to be moved in the direction, and a movable plate provided on the other main surface side of the fixed bed.
And a driving means connected to the movable plate such that the movable plate approaches or separates from the fixed bed. 2. The method according to claim 1, wherein the connecting member comprises a plurality of members.
At least the portion located on one main surface side of the fixed bed
The press according to claim 1, wherein the press is detachably formed.
Machine.