JPH054906Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a press die positioning device in a press machine.

(Prior Art) A lower die of a press die in a press machine is placed on a press die installation stand (hereinafter referred to as a bolster), and an upper die is fixed to a ram and moves up and down.

By the way, when assembling such a press mold,
The upper mold and the lower mold are suspended and transported by a crane or the like, and each is installed at a predetermined position. In this case, it is necessary to accurately position the upper and lower molds, and techniques for positioning the upper mold with respect to the lower mold are described in, for example, Japanese Utility Model Application No. 59-110132 and Japanese Utility Model Application No. 58-43832.

Here, we will not describe the positioning of the upper mold relative to the lower mold, but the positioning of the press mold relative to the bolster.

When assembling a press mold, the press mold 1 is suspended and transported by a crane 2 and placed on a bolster 3, as shown in FIG. The press die 1 is positioned relative to the bolster 3 by engaging a key or pin 4 protruding from the center of the bolster 3 with a keyway or pin hole 5 formed at the center of the bottom of the press die 1. .

However, since the press mold 1 suspended from the crane 2 swings, the insertion of the pin 4 into the pin hole 5,
Alternatively, it was extremely difficult to engage the key in the keyway, and it took a long time to install the press mold 1.

Therefore, as shown in Fig. 7, pin 6 is attached to the bolster 3.
At the same time, a V-groove 7 is formed on the bottom of the press die 1 so that the pin 6 can freely engage with the press die 1.
Positioning is carried out by moving the press die 1 in the direction to make it come into contact with the V-groove 7, then lowering the press mold 1 and inserting the pin 4 into the pin hole 5.

In addition, in Japanese Utility Model Publication No. 58-14013, a plurality of grooves are provided on the press mold installation base, and positioning pins that engage with the grooves are slidably provided on the press mold, and the press mold is suspended by a crane or the like. A technique has been disclosed in which a press mold is positioned by fitting a positioning pin into a groove while being moved by the force of an operator, and fixing the two by a fit and intersection between the groove width and the positioning pin.

(Problem to be solved by the invention) In the conventional example as described above, in order to provide versatility, it is necessary to set the position of the pin 6 based on a press die with large dimensions. However, in such a case, as shown in Fig. 7, the scrap chute 8 and the pin 6 may interfere with each other, causing the scrap chute 9 to tilt as shown in the right side of the figure. It is not possible to make the angle θ ₁ large, and therefore scraps cannot be smoothly discharged.

Further, if the height of the press mold is reduced, the inclination angle θ ₂ of the scrap chute 9 becomes even smaller, which becomes a serious obstacle to scrap ejection, and therefore there is a restriction that the height of the press mold cannot be made so low.

Furthermore, in a press die with small dimensions, the V groove 7 does not reach the pin 6; This, combined with the inability to lower the press die, was an impediment to downsizing.

In addition, the technology related to press die positioning disclosed in Japanese Utility Model Publication No. 58-14013 has solved the above problem, but in this conventional example, due to the fit tolerance between the groove width and the positioning pin, Since the press die is positioned by fixing both of them, the following problems arise.

When positioning the press mold, the press mold is suspended by a crane, etc., so the press mold swings, making it extremely difficult to fit the positioning pin into the groove, and the press mold is quite heavy. If the positioning pin is fitted into the groove while it is swinging, the positioning pin will be damaged.

Therefore, it is necessary to wait until the oscillation stops before fitting the positioning pin into the groove.
Positioning takes time, which poses a problem in terms of productivity.

The present invention was made in order to solve the above problems, and aims to provide a press die positioning device that can position the press die in a short time, make the press die more compact, and improve scrap ejection performance. purpose.

(Means for Solving the Problems) The means according to the present invention for achieving the above object is to form a plurality of grooves having shoulders in the press mold installation stand, and to form a V-shaped notch in the grooves. The formed pressure-receiving member is provided movably, a buffer member is interposed between the pressure-receiving member and the shoulder of the groove, an engagement member that can freely engage with the groove is provided in a press mold, and the engagement member is It is characterized in that it fits loosely into the groove.

(Function) Since the present invention is constructed as described above, it has the following functions. That is, when positioning the press mold, the width of the plurality of grooves provided on the press mold installation base is made sufficiently wide with respect to the engagement member provided on the press mold,
Since the engaging member is loosely fitted into the groove, it is possible to insert the engaging member into the groove without interfering with the groove even if the suspended press mold swings to some extent.

In this way, the engaging member is inserted into the groove, and then the suspended press die is moved along the groove toward the shoulder, but even if the press die swings during this movement, the engaging member It is possible to move without interfering with the groove. Then, while the engaging member is pressed against the pressure receiving member, the press die suspended while being guided by the V-shaped notch formed in the pressure receiving member is moved, and the V-shaped bottom of the V-shaped notch is moved. It is firmly pressed against and positioned.

This pressing force of the engaging member against the V-shaped bottom is softened by the buffer member interposed between the shoulder and the pressure-receiving member, making it possible to prevent damage to the engaging member.

Furthermore, since no pins are provided on the press mold installation stand, there is nothing that interferes with the chute for discharging scraps, so the degree of freedom in installing the chute is increased, and the angle of inclination can be increased.

Furthermore, since the grooves do not pose any obstacles, a plurality of grooves can be provided on the press die installation base, and therefore, the engaging member can be engaged with any groove depending on the size of the press die.

(Effect of the invention) As described above, even if the suspended press mold shakes a little, there is no interference between the groove provided on the press mold installation stand and the engaging member provided on the press mold, and The buffer member interposed between the shoulder and the pressure-receiving member relieves the pressing force of the engaging member while positioning is performed using the V-shaped notch formed in the pressure-receiving member, so that the suspended press mold can be kept in a stationary state. Positioning can be done in a short time without waiting.

Furthermore, since the inclination angle of the scrap chute can be increased, the scrap can be smoothly discharged and the discharge performance can be improved.

Furthermore, since the engagement member and the groove can be engaged regardless of the size of the press die, there is no need to make the press die unnecessarily large, and the press die can therefore be made more compact.

Furthermore, the press mold installation stand does not have any pins that would interfere with the scrap chute.
The angle of inclination of the chute can be increased, and therefore the height of the press mold can be reduced, and together with the above, the press mold can be made even more compact.

(Example) Examples of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 10 denotes a bolster (press mold installation stand), and a plurality of grooves 11 are formed on the upper surface of the bolster 10 in parallel with each other and at predetermined intervals. One end of this groove 11 is formed in a V-shape, and as shown in FIG. 2, a stepped portion 11a is formed at the bottom of the groove 11, and the bottom at one end of the groove 11 is lower than the other end. ing. A pressure receiving member 12 is provided on a land portion 10a of the bolster 10 that extends to one end of the groove 11. As shown in FIG. 3, the member 12 is formed with a V-shaped notch 12a that faces the groove 11 and is recessed in a direction away from the other end of the groove 11.
Presser plates 13 for slidably holding the member 12 are provided on both sides of the member. This presser plate 13 is fixed to the bolster 10 and is slidably engaged with sliding grooves 14 formed on both sides of the pressure receiving member 12.
The end portion of the sliding groove 14 is in contact with the end portion of the sliding groove 14 on the far side from the other end portion.

The bolster 10 is formed with a shoulder portion 10b that is connected to the land portion 10a, and the pressure receiving member 12 and the shoulder portion 10b are connected to each other.
A cushioning material 15 made of urethane rubber or the like is provided between the two. As shown in FIG. 4, the flange portion 1 of the pressure receiving member 12
The cushioning material 15 is prevented from coming off by the contact between the cushioning material 2b and the cushioning material 15.

Figure 5 shows the lower mold of the press mold.
A pin hole 16a is formed at the bottom of the pin hole 1.
A positioning pin 17 is slidably fitted into 6a. The diameter of the head 17a of the pin 17 is pin hole 1.
The diameter of head 1 is larger than that of 6a, except when positioning.
7a is in contact with the bottom of the lower mold 16. 18 is a retaining plate located above the positioning pin 17 attached to the lower mold 16, and the head 1 of the pin 17 is
7a prevents the pin 17 from coming off.

Further, as shown in FIG. 3, the relationship between the diameter of the pin 17 and the width of the groove 11 is such that the width of the groove 11 is sufficiently wider than the diameter of the pin 17.

Next, the operation of the device having the above configuration will be described. When installing the lower mold 16 on the bolster 10, the lower mold 16 is suspended by a crane (not shown) and conveyed onto the bolster 10, and a pair of grooves having an interval equal to the interval between the positioning pins 17, 17, for example, as shown in FIG. Positioning pin 1 above grooves A and B
Position 7 and 17. Next, lower the lower die 16 to fit the tips of the positioning pins 17, 17 into the grooves A, B.
position within. Lower mold 1 suspended at this time
6 is shaking, but the width of the groove 11 is sufficiently wide compared to the diameter of the pin 17, so even if the lower die 16 is shaking a little, there is no interference between the groove 11 and the pin, and the pin 17 is damaged. This makes it possible to position the tip of the pin 17 within the grooves A and B in a short time. Then, the same pins 17, 17 are in the groove A,
Even if it touches the bottom of B and moves up, the same pin 1
7 and 17 are in contact with the retaining plate 18, so
It will not come out from the pin hole 16a.

Once the rough initial positioning is completed in this way, the lower die 16 is moved toward one end of the grooves A and B, and the positioning pins 17 and 17 are moved to the pressure receiving member 12.
the notch 12a. Even during this movement, the width of the groove 11 is sufficiently wide relative to the diameter of the pin 17, so even if the lower mold 16 swings a little, there is no interference between the groove 11 and the pin 17, and the pin 17
It becomes possible to move the lower die 16 in a short time while preventing damage to the lower die 16. When the pins 17, 17 contact the pressure receiving member 12, this contact force is applied to the pressure receiving member 12.
The pressure receiving member 12 slides in the direction of the cushioning material 15 in order to compress the cushioning material 15 by acting on the cushioning material 15 via the pressure receiving member 12 . That is, even if the positioning pins 17, 17 contact the pressure receiving member 12 at a considerable speed, this impact force is absorbed by the cushioning material 15, so that damage to the pressure receiving member 12 and the positioning pin 17 is prevented.

By engaging the positioning pin 17 with the pressure receiving member 12 as described above, the lower mold 16 is positioned in the front, rear, left and right directions, and then the lower mold 16 is further lowered and the aforementioned pin or key, not shown, is inserted.
Final positioning is performed by engaging the pin hole or key of the lower die 16.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a press-type positioning device according to the present invention, FIG. 2 is a sectional view taken along the line - in FIG. 1, FIG. 3 is a plan view showing the waist of the present invention, and FIG.
The figures are a sectional view taken along the - line in Fig. 3, Fig. 5 is a sectional view showing a part of the lower mold, Figs. 6 and 7 are conventional positioning devices, Fig. 6 a is a front view, and b ,c
FIG. 7 is a detailed view of part A of a, FIG. 7 a is a front view, and FIG. 7 b is a plan view of a as seen from direction B. 10... Bolster (press mold installation stand), 11...
...Groove, 16...Lower die (press die), 17...Positioning pin.

Claims (1)

[Scope of utility model registration request] A plurality of grooves having shoulders are formed in the press mold installation base, a pressure receiving member having a V-shaped notch formed in the groove is movably provided, and a buffer is provided between the pressure receiving member and the shoulder of the groove. 1. A press mold positioning device, characterized in that an engaging member is provided on the press mold with a member interposed therebetween, and the engaging member is loosely fitted into the groove.