JPH0538599A - Molding press - Google Patents

Abstract

(57) [Abstract] [Purpose] In a molding press machine for powder metallurgy, it is easy to adjust the position of a tool set in the press machine body. [Structure] A plurality of storage holes 41 opened downward are provided in a base 21 of the tool set 2 which is placed on the bed 7 of the press device body 1. A spherical ball 42 is housed in these housing holes 41 so as to be retractable and rotatable in any direction, and a spring 44 for pushing the ball 42 downward is housed. [Effect] Since the ball 42 rolls in any direction on the bed 7, the base 21 can be easily moved in any direction in the front, rear, left, and right directions, and its position can be easily adjusted. Then, when the base 21 is fixed on the bed 7 by the fixing tool, the base 21 is pressed downward. As a result, the ball 42 sinks into the storage hole 41, and the lower surface of the base 21 contacts the bed 7. Therefore, the vertical position of the board 21 can be reliably regulated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding press used in powder metallurgy and the like.

[0002]

2. Description of the Related Art In powder metallurgy, a raw material powder containing a metal as a main component is molded and sintered. In this type of powder metallurgy, for molding, for example, a molding press device as shown in FIGS. 3 and 4 is used. In this molding press device, a tool set 2 is detachably mounted in a press device body 1 for use. The press device main body 1 has a tool set storage portion 6 that is open to the front, and a bed 7 having a horizontal upper surface is provided on both left and right sides of the lower portion of the storage chamber 6. Further, the press device main body 1 is provided with a lower ram 8 which faces the tool set storage portion 6 from below, and which faces the tool set storage portion 6 from above and is coaxial with the lower ram 8. The upper ram 9 is provided in the. These rams 8 and 9 are driven by a drive source (not shown) to move in the vertical direction in the figure. The upper ram 9 has a cylindrical upper punch 10 which is a part of a mold and is attached to the lower side via an upper punch holder 11. Further, a plurality of rollers 12 are installed side by side in the front-rear direction at the side edge portions of both beds 7, respectively.
Each of these rollers 12 has a left-right direction as a rotation axis direction and slightly protrudes from the upper surface of the bed 7. Further, bolts 13 are fixed to both the beds 7 so as to be located outside the rollers 12 and project upward.

Next, the structure of the tool set 2 will be described. Reference numeral 21 is a rectangular flat plate-like base, and this base 21 is placed on both beds 7 of the press device main body 1, more specifically, on both sides of its rollers 12, and is a holding plate that forms a fixture together with the bolt 13. It is fixed by 22 and nut 23. That is, the pressing plate 22 fitted to the bolt 13 is applied to the upper surface of the base 21, and the nut 23 screwed to the bolt 13 is tightened, so that the base 21 is pressed downward and fixed on the bed 7. ing. A plurality of support columns 24 are vertically slidably passed through a peripheral portion of the base plate 21 via a sleeve 25. These stanchions 24
A support plate 28 is fixed to the lower end of the support plate 28 in parallel with the base plate 21 by a screw portion 26 and a nut 27 formed on the column 24 itself. On the other hand, a mantel 30 is fixed to the upper end of the pillar 24 by a bolt 29 in parallel with the base 21.
With such a configuration, the support plate 28 and the mantel 30 are
Can be vertically moved integrally with the base 21. The support plate 28 is configured such that the lower ram 8 of the press device body 1 is detachably connected to a ram connection portion 31 formed on the lower side thereof via a connection rod 32. Further, a core rod 33 forming a part of a mold is fixed to the central portion of the support plate 28 so as to project upward by a screw portion 34 formed on itself. The core rod 33 penetrates the central portion of the base plate 21 with a gap, and has a large diameter portion 35 at the upper end portion. A cylindrical lower punch 36 forming a part of a mold is fixed to a central portion of an upper surface of the base 21, and a large diameter portion 35 of the core rod 33 is slidably fitted in the lower punch 36. is doing. Further, in the center of the mantel 30, a cylindrical die 37 is fixed in a penetrating state by a retainer 38,
The lower punch 36 is slidably fitted in the die 37.

Next, the operation of the above configuration will be described. When mounting the tool set 2 in the press device body 1, as shown in FIG. 4, a predetermined tool set 2 used for molding is carried into the tool set storage portion 6 of the press device body 1 by a forklift 39 or the like. , Put on bed 7. Next, the position of the tool set 2 in the front-rear direction and the left-right direction is adjusted on the bed 7, and the axis a of the rams 8 and 9 on the press device body 1 side is aligned with the axis b of the tool set 2. Then, the tool set 2 is fixed on the bed 7 with the bolt 13, the pressing plate 22, and the nut 23 using a jig. Further, the lower ram 8 of the press device body 1 is connected to the support plate 28 of the tool set 2 via the connecting rod 32. Then, at the time of molding, first, a raw material powder containing metal as a main component is put into a recess formed between the die 37, the lower punch 36 and the core rod 33 by a feeder (not shown). Next, the upper ram 9 is driven to lower the upper punch 10 to fit it between the die 37 and the core rod 33, and the lower ram 8 is driven to lower the support plate 28 and the mantel 30 to lower the die 37.
To lower. Since the lower punch 36 is fixed to the base 21 fixed on the bed 7, it is raised relative to the die 37. This allows the die 37 and core rod
The raw material powder is compressed between the punch 33 and the punch 33 by the punches 10 and 36, and a tubular molded product is double-pressed. After this molding,
While the upper punch 10 rises together with the upper ram 9, the die 37 descends together with the lower ram 8 and the molded product is extracted by the protrusion of the lower punch 36.

[0005]

DISCLOSURE OF THE INVENTION In the conventional molding press machine described above, the tool set 2 is replaced by the press machine body 1.
When positioning after loading in the tool set 2,
Since the rollers 12 are mounted on the bed 7 and rotate in the left-right direction as the axis of rotation, they can be easily moved in and out of the bed 7 by the rotation of the rollers 12, but in the left-right direction. It is difficult to move to. This is especially difficult when the tool set 2 is large. Therefore, if the tool set 2 is displaced from the regular position in the left-right direction during loading, it is difficult to adjust the position of the tool set 2. The present invention is intended to solve such a problem, and an object of the present invention is to provide a molding press device capable of easily adjusting the position of the tool set 2 with respect to the press device body 1.

[0006]

In order to achieve the above object, the present invention comprises a press device main body and a tool set detachably mounted in the press device main body, and the press device main body comprises: The tool set includes a ram that moves in the vertical direction and a bed, and the tool set includes a mold, and a base that is fixed on the bed of the press device body by being pressed downward by a fixture and fixed. In a molding press device having a support plate that is vertically movable with respect to a base plate and to which a ram of the press device body is connected, a downward opening is made at a plurality of locations on the base of the tool set facing the bed of the press device body. The storage holes are provided, and spherical balls are stored in these storage holes so that they can be retracted and rotated freely in any direction, and a spring that urges the balls downward is provided. Those who pay.

[0007]

In the molding press device of the present invention, when the tool set is mounted in the press device main body, the tool set is carried into the press device main body, the base is placed on the bed, and then the press device main body. To align the ram's axis with the tool set's axis, move the board forward, backward, left, and right on the bed to position the tool set. At this time, the ball stored in the storage hole of the base is urged downward by the spring and slightly protrudes from the lower surface of the base.The lower surface of the base does not contact the bed, but only the lower end of the ball contacts the bed. However, the ball that is rotatable in any direction rolls on the bed, so that the base can be easily moved on the bed in any of the front, rear, left, and right directions, and the position of the tool set can be easily adjusted. After this position adjustment, the base is fixed on the bed by the fixing tool, but since the base is pressed down by the fixing tool, the ball sinks into the storage hole against the bias of the spring, The bottom surface contacts the bed. As a result, the base is securely and firmly fixed on the bed, and the vertical position of the base is reliably regulated, so that the molded product is accurately molded.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the molding press device of the present invention will be described below with reference to FIGS. The molding press machine of this embodiment has many points in common with the molding press machine of the conventional example shown in FIGS. 3 and 4, and therefore, the common parts are designated by the same reference numerals. The description of the configuration and the operation thereof will be omitted. In the molding press machine of this embodiment, the roller 7 as in the conventional example is provided on the bed 7 of the press machine body 1.
Is not provided. Instead, on the lower side of the base 21 of the tool set 2, storage holes 41 that open downward are formed at four corners facing the bed 7, respectively, and spherical balls are formed in the storage holes 41. 42, a retainer 43 located on the upper side thereof, and a coiled spring 44 located further on the upper side thereof are housed. The ball 42 is fitted in the storage hole 41 together with the retainer 43 so as to be slidable in the vertical direction, and is capable of retracting with respect to the lower surface of the base 21. Along with this, the ball 42
Is fitted to the retainer 43 so as to be rotatable in any direction. The ball 42 and the retainer 43 are prevented from coming off from the storage hole 41. Also, the spring 44
Base the ball 42 downwards through the retainer 43
The spring 44 is urged in a direction projecting from the lower surface of the base 21, but the strength of the spring 44 is such that when the base 21 is placed on the bed 7, the balls 42 are moved from the lower surface of the base 21 against the load of the tool set 2. It is set to project slightly.

When the tool set 2 is mounted in the press device body 1, the tool set 2 is loaded into the tool set housing 6 of the press device body 1 from the front,
The base 21 is placed on the bed 7. Then, in order to align the axis a of the rams 8 and 9 of the press apparatus main body 1 with the axis b of the tool set 2, the base 21 is moved in the front-rear and left-right directions on the bed 7 to move the tool set 2 in the front-rear direction. Adjust position at. At this time, the ball 42 is urged downward by the spring 44 and slightly protrudes from the lower surface of the base 21. The lower surface of the base 21 does not contact the bed 7, but only the lower end of the ball 42 contacts the bed 7. There is. Therefore, the ball 42, which is rotatable in an arbitrary direction, rolls on the bed 7, whereby the base 21 can be easily moved on the bed 7 in any direction in the front, rear, left, and right directions, and the position of the tool set 2 can be easily adjusted. .. After adjusting this position, use a jig to
The tool set 2 is fixed on the bed 7 by means of 13 and the holding plate 22 and the nut 23. Then, the base plate 21 is pressed downward by the pressing plate 22 and the nut 23, so that the ball 42 is retracted into the storage hole 41 against the bias of the spring 44, and the lower surface of the base plate 21 contacts the bed 7. .. This makes bed 7
The base 21 is securely and firmly fixed on the top. At the same time, the vertical position of the base 21 is reliably regulated, so that the interval between the punches 10 and 36 is accurately controlled during the molding operation, and the molded product is accurately molded.

The present invention is not limited to the above embodiment, but various modifications can be made. For example,
In the above embodiment, the tool set 2 in which only the lower punch 36 and the die 37 are incorporated excluding the upper punch 10 has been described, but the tool set 2 in which the upper punch is incorporated in addition to the lower punch and the die is also used. The invention can be applied.

[0011]

According to the present invention, storage holes opened downward are provided at a plurality of locations on the base of the tool set facing the bed of the press device body, and spherical balls can be retracted and retracted in the storage holes. Since it houses the spring that biases the ball downward, it is housed rotatably in any direction, so after loading the tool set into the main body of the press machine, move the base board forward, backward, leftward and rightward to move the tool. When adjusting the position of the set, a ball that is urged by a spring to rotate freely in an arbitrary direction slightly protruding from the lower surface of the base rolls on the bed, so that the base moves on the bed in any direction in the front, rear, left, and right directions. The tool set can be easily adjusted in position, and the axis of the ram of the press body can be easily and accurately aligned with the axis of the tool set. Also, when the base is fixed on the bed with the fixing tool after adjusting the position, the base is pressed down by the fixing tool, the ball is retracted into the storage hole against the bias of the spring, and the lower surface of the base is fixed to the bed. By contacting, the base can be securely and firmly fixed on the bed, and the vertical position of the base is surely regulated, so that the molded product can be accurately molded.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a molding press device of the present invention.

FIG. 2 is a bottom view of the same substrate.

FIG. 3 is a cross-sectional view showing an example of a conventional molding press device.

FIG. 4 is a side view in which a part of the same is shown in section.

[Explanation of symbols]

 1 Pressing Machine Main Body 2 Tool Set 7 Bed 8 Lower Ram (Ram) 13 Bolt (Fixing Tool) 21 Base 22 Holding Plate (Fixing Tool) 23 Nut (Fixing Tool) 28 Support Plate 33 Core Rod (Mold) 36 Lower Punch (Metal) 37) Die (mold) 41 Storage hole 42 Ball 44 Spring

Claims (1)

[Claims] 1. A press device main body, and a tool set detachably mounted in the press device main body, wherein the press device main body has a ram that moves in the vertical direction and a bed, and the tool The set is a mold, a base placed on the bed of the press machine body and fixed by being pressed downward by a fixture, and a ram of the press machine body that is vertically movable with respect to the base and is connected. In a molding press device having a supporting plate to be formed, storage holes opened downward are provided at a plurality of locations facing the bed of the press device body in the base of the tool set, and spherical balls are provided in these storage holes. A molding press device, which is housed so as to be retractable and rotatable in any direction, and a spring for urging the ball downward.