JPS6040700A - Sub-slide device for press - Google Patents

Abstract

PURPOSE:To prevent surely dies from being broken on account of overloading by making plural sub-slides respectively discretely and verticaly drivable and enabling the discrete detection of the overloaded sub-slides. CONSTITUTION:Plural sub-slides 15 are provided to a slide 14 and upper dies are attached to the respective sub-slides. A worm gear 21, a worm wheel 22 and a key 23 are driven by an electric motor to move upward and downward the sub-slides 15, by which the height of each upper die is adjusted. The slide 14 is then lowered to lower all the upper dies so that the work on lower dies is sandwiched. The curved surfaces at the bottom end of lifting bodies 20 press respectively the sub-slides 15 via the curved surfaces of projecting bodies 25 thereby self-aligning the sub-slides. If foreign matter is gnawed between the upper and lower dies in this stage, the sub-slide 15 of such dies is overloaded and the pressure in an oil chamber 28 exceeds the prescribed value, by which an oil pressure detector is actuated to stop emergently the slide 14.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sub-slide device in a multi-step press such as a transf1 press.

In multi-step presses like Trans7Apress,
In order to cope with cases where the height of the mold for each process (dyno, etc.) is different, some are equipped with a slide with a sub-slide. An example of such a press is shown in FIG.

In Figure 1, (1) is the bed, (2) is the applied, (3) is the crown, (4) is the slide, (5a)
~(5d) is the subslide, (6a) ~(6d
) is the upper mold, (7) is the trolley, (8 is Popnuta, (9a is
) to (9d) are the lower molds. The workpiece is, for example, a first
The upper and lower molds (6a) to (6) are carried in sequentially from the left side of the figure.
d) and (9a) to (9d), and are sequentially carried out from the right side. The height position of each upper mold (6a) to (6d) is determined by raising and lowering the sub-slides (5a) to (5d) according to the height of the upper surface of each lower mold (9a) to (9d). It will be adjusted accordingly.

Conventionally, as a filter negative prevention device for such a press, one in which an overload detection device is provided at the lower part of the slide fulcrum, that is, at the point (A) in FIG. 1 has been proposed.

However, with such a conventional configuration, an abnormality could not be detected unless an overload exceeding the slide fulcrum capacity was applied. Therefore, if a foreign object is caught between the upper and lower molds in any one process, or if it is difficult to adjust the sub-slide in any one process, the slide fulcrum capacity of the mold in that process will be reduced. There was a problem that the load was applied and the mold was damaged.

The present invention solves the above-mentioned conventional drawbacks, and an object of the present invention is to provide a sub-slide device that can reliably prevent damage to the mold.

In order to achieve the above object, the press sub-slide device according to the present invention includes a plurality of sag slides that are attached to the slide so as to be movable up and down and each support an upper mold, and a lift drive that lifts and lowers each of these sub-slides individually. This configuration includes a device and an overload detection device that individually detects overload of each of the sub-slides.

According to this configuration, overload of each sag slide can be detected individually, so even if a foreign object is caught between the upper and lower molds, or if the sub slide w.
Overloading of the sub-slide can be detected immediately, and damage to the mold can be reliably prevented.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Fig. 2 is a semi-longitudinal front view of a multi-process press equipped with a sub-slide device according to an embodiment of the present invention, and Fig. 3 is a regenerative longitudinal side view, where αυ is a bed, (2) is an applied, and a field is a crown. , Q41 is a slide, aQ is a plurality of (six in this embodiment) sub-slides, aQ is a trolley, and αη is a bolster. Although not shown, each sub-slide <1! l! An upper mold is attached to the lower surface of each of the two, and a lower mold is installed directly below the upper mold on the bolster (8). As shown in FIG. 3, each of the sag slides QQ is driven up and down by a lifting drive device including an electric motor α8) and a rotating shaft CII driven by the electric motor α8). This star driving device will be explained using FIGS. 4 and 5.

FIG. 4 is a half-Rmr front view of the elevating drive device, and FIG. 5 is a cross-sectional plan view of the same. In Figures 4 and 5, (a)
is an elevating body (a), and this elevating body (a) is driven by an electric motor Q barrel, and a rotating shaft 01 is rotated many times by this electric motor α frame.
Form gear (41) connected to this! 7 Omkya? It is driven up and down via a form wheel (A) that meshes with υ, and a rotating cylinder (C) that is connected to the form wheel (A) via a key so that it can move relative to it in the vertical direction. A screw is formed on the inner circumferential surface of the rotating cylinder (c) over the entire length in the axial direction, and a screw is formed on the outer circumferential surface of the elevating body (c) from its upper end to its lower end. If you have already done so, please screw these screws together.
The elevating body φ wheel is raised and lowered by the forward and reverse rotation of the rotating cylinder ■.

The elevating bodies () are driven in pairs by one electric motor a-barrel, and raise and lower each sag slide θO.

Each sub-slide (c) has a protruding body with a curved surface that forms part of a spherical surface on its upper surface, and an engaging body (c) that is divided into two parts in the circumferential direction and has a tapered surface on the inner circumferential surface of the upper end. are attached at two places each, and the sub-slide Qυ is attached to the elevating body (A) by contacting the tapered surface of the engaging body (A) with the tapered surface of the lower end large diameter portion (20a) of the elevating body. It is supported in a hanging state. The lower end surface of the elevating body (a) has a curved surface similar to the curved surface of the protruding body (a), and these curved surfaces face each other with a slight gap.

An annular body (2) is fitted onto the upper end of the elevating body (2) with a gap, and this annular body (goods) is supported by a slide (04) on its lower surface outer periphery, and is moved a predetermined distance in the vertical direction. It is movable. The annular body (A) of the trench has its lower surface facing the upper surface of the rotary cylinder body with a slight gap, and further forms an oil chamber between it and the slide α4. There is. The four wheels are solid. If the oil chamber (c) is connected to an oil pressure detection device (not shown), this oil pressure detection device is
If the pressure in the oil chamber (c) exceeds a predetermined value, a signal is output to emergency stop the descent of the slide θ. The upper part is a bellows, and the first part is a bearing.

Next, the operation will be explained. When adjusting the sub-slide, the desired electric motor (c) is rotated forward or reverse.

This causes the form gear ■υ to rotate via the rotation axis a, and the quarm wheel /L/(2) to rotate. The rotational force of the quom wheel /I/ is transmitted to the rotary cylinder (C) via the key (C), and the elevating body (A) is raised or lowered by the rotation of the rotary cylinder (C). In this way, the desired one of the sub-slides 0Q is raised and lowered, and the height adjustment of the upper mold attached thereto is completed.

After adjustment, slide Q4) during press work.
is lowered to simultaneously lower all the upper molds, and the workpiece on the lower mold is sandwiched between the lower mold and the lower mold.

At this time, in this embodiment, each sub-slide Q'9 is supported in a suspended state by the elevating body (A) due to the contact between the tapered surface of the lower end of the elevating body (I) and the tapered surface of the engaging body (C). Moreover, since the lower end curved surface of the elevating body (E) and the curved surface of the protrusion body (C) face each other with a slight gap, immediately after the upper mold contacts the workpiece, The gap between the two concave surfaces disappears and the two concave surfaces come into contact with each other, and each sub-slide 05 is pressed against the respective elevating body (A) through these two concave surfaces, and the self-vJ
Aligned. Then, the elevating body (
4) receives an upward force, and this force is transmitted to the rotating cylinder (C) through the screw, and the rotating cylinder (C) and the annular body (A) come into contact, causing the annular body (A) to move upward. Under the force of , the pressure in the oil chamber (g) increases. Normally, this pressure is below a predetermined value, and the oil pressure detection device does not operate. When the press work is completed in this way, the slide a41 is raised and then looked down for the next lowering.

On the other hand, if a foreign object gets caught between the upper and lower molds when the slide α4 is lowered, or if the sub-slide adjustment is delayed, an overload will be applied to the sub-slide aQ, and the pressure in the oil chamber (c) will decrease. When the predetermined value is exceeded, the oil pressure detection device is activated and the slide α is stopped.

Therefore, damage to the upper and lower molds can be prevented.

As explained above, according to the present invention, the overload of each sub-slide can be detected individually, so even if a foreign object is caught between the upper and lower molds, or if the sub-slide adjustment is delayed, the overload of each sub-slide can be detected individually. , overload of the sub-slide can be detected immediately, and breakage of the mold can be reliably prevented.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view of a conventional press, Fig. 2 is a semi-vertical front view of a press equipped with a sub-slide device according to an embodiment of the present invention, Fig. 3 is a side view of the regenerative vertical r, and Fig. 4 5 is a semi-longitudinal front view of a main part of a sub-slide device according to an embodiment of the present invention, and FIG. 5 is a regenerative cross-sectional plan view. 0 condolence...slide, (IQ...sub slide, Q Kuyama electric motor, 09...rotating shaft, (1)...elevating body, e
ρ...form gear, ni)...form wheel,
(G)...Key, ■...Rotary cylinder Figure 4 Figure 5 Procedural amendment (voluntary) (1982 Patent Application No. 147656 2, Title of invention Press sub-slide device 3, Amendment Relationship with the case involving a person who does the following Patent applicant name (511) Hitachi Zosen Corporation 4, agent address 1-6-17F, Tateuribori, Nishi-ku, Osaka 550!
'Amano Building Showa Year Month Day 6, Number of inventions increased by amendment 7, Detailed description of the invention in the specification subject to amendment 1) Page 6, line 18, "During press work," fcr Press work is carried out, and during press work, each sub-slide Q is moved upward by a balance cylinder (to) attached to the slide Q → in order to absorb the looseness of the screws of the sub-slide device. The lower end curved surface of the elevating body is brought into contact with the curved surface of the protruding body ω. Therefore, the tapered surface of the lower end of the elevating body of each sub-slide (c) and the tapered surface of the engaging body can be opposed to each other with a slight gap. In addition, the air pressure of the balance cylinder) is controlled by the sub-slide (
(b) Can be varied depending on the weight of the upper mold to be installed. "When doing press work, first," he corrected. (2) From the 1st line of page 7 to the 7th line of the same page, the phrase ``Each subslide 0!9 touches...'' has been replaced with ``
"Because the lower end curved surface of the elevating body - and the curved surface of the protruding body c251 are in contact with each other," I am corrected. (1) Part of the drawings (1) Figure 2 of the drawings Figure 2 of the drawings is corrected in the attached sheet. 1. A plurality of sub-slides that are movably attached to Nuride and each support an upper mold, a lifting drive device that lifts and lowers each of these sub-slides individually, and an overload mechanism that individually detects overload on each of the sub-slides. A sub-slide device for a press, characterized in that it is equipped with a load detection device.

Claims (1)

[Claims] 1. A plurality of slides that are attached to the slide so as to be able to rise and fall and each support an upper mold; (2) a lifting drive device that lifts and lowers each of these sub-slides individually; A sub-slide device for a press, characterized in that it is provided with an overload detection device for detecting an overload.