JPS5925552Y2 - Rotating mold of press machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rotary mold for a press machine, in which an upper mold and a lower mold are rotatably provided.

Conventionally, in the mold of a press machine that performs bending processing such as a press brake, a concave lower mold, for example, is fixed to a lower mold support fixed to the press machine, and an upper mold is provided that can be raised and lowered. Bending work was performed by fixing a convex upper die to a support and pressing the plate, but the bending direction was limited to upwards only, and when bending in the vertical direction, the plate It is necessary to turn the plate over, and when processing a large plate material, the turning operation requires labor and is not easy to handle, creating a major hindrance to the work.

The present invention includes a rotatable upper mold having concave and convex mold parts, and a lower mold part having convex and concave shapes corresponding to the concave and convex mold parts, respectively. The mold is rotatably provided, and the upper and lower molds are rotated correspondingly.
By freely changing the bending direction upward or downward, the plate material can be bent both upward and downward without being reversed, and the work efficiency is improved.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In the figure, reference numeral 1 denotes a lower die support which is connected to the main body 3 of the press by appropriate means, and has a semi-cylindrical concave portion 5 extending horizontally at its upper end.

7 is a lower mold having a semi-cylindrical convex part 9 that engages with the concave part 5; on the opposite side of the convex part 9, a female part 13 and a male part 15 are provided for bending the plate material 11; It is.

17 are pins 19 provided on the lower mold 7 and the lower mold support 1, respectively.
．． The lower die 7 is urged to be pressed and supported by the concave portion 5 by means of a bullet whose both ends are locked by 21.

23 is a notched groove provided in the lower die support 1 to accommodate the ammunition 17, and the pin 21 is locked in a locking portion 25 provided in a part thereof.

27 is a bottle hole provided horizontally from the side end of the lower mold 7;
It passes through a notched groove 29 provided at a position corresponding to the notched groove 23, and accommodates and locks the pin 19 therein.

Reference numeral 31 denotes a connecting piece for connecting the lower molds 7, 7 divided at the center, etc., and a protruding locking part 33 as shown in FIGS. 4 and 5.
, which fits into the bottle holes 27 and 27, and which fits into the pin holes 27 and 27.
The lower mold 7
, 7 are rotated integrally.

37 is a mold support member fixed to a ram 39 which is movably raised and lowered by an appropriate means on the main body 3 of the press machine through a support piece 41, and has a half extending horizontally from the lower end. A cylindrical concave portion 43 is provided.

Reference numeral 45 denotes an upper mold having a semi-cylindrical convex part 47 that engages with the concave part 43, and is formed in almost the same shape as the lower mold 7, and a male mold of the lower mold 7 is provided on the opposite surface of the convex part 47. A female part 49 and a male part 51 for bending the plate 11 are provided corresponding to the part 15 and the female part 13, respectively.

Numeral 53 is a bullet whose both ends are locked by pins 55 and 57 provided on the upper die 45 and the upper die support 37, respectively, and is biased so as to press and support the upper die 45 against the concave surface portion 43.

59 is a notched groove for accommodating the ammunition 53, and the pin 57 is locked in a locking portion 61 provided in a part thereof.

The method of attaching the connecting piece when connecting the pin 55 and the upper die 45 is the same as the method of attaching the pin 19 and the connecting piece 31 described above, so a detailed explanation will be omitted here.

63, 65 are poles on both ends of the lower die support 1) 67, 6
The shaft portions 71 and 73 provided protruding from both ends of the lower die 7 are fitted and supported by brackets fixed by the brackets 9.

A sector gear 75 is fixed to one end of the shaft 73 by a key 77 and a nut 79, and is engaged with a rack 81 that is slidably provided in a direction perpendicular to the axis of the shaft 73. The sliding movement causes the lower mold 7 to rotate.

83 is a sliding body that securely holds the rack 81 with screws 85° 85, 87 is a support that is secured to the side of the bracket 65 with bolts 89, and a cylinder 93 is horizontally secured to the rear surface with an oak 91.91. ing.

Reference numeral 95 denotes a locking bolt provided perpendicularly to the support body 87, which is provided in the axial direction at the bottom of the sliding body 83 and fits into a groove 97 to restrain rotation of the sliding body 83.

99.101 is a cylinder lid that supports both ends of the cylinder 93, and has four poles) 103.103. ... penetrates and is fixed together with the support body 87.

A piston rod 105 is fixed to a piston 107 that is slidably provided in the cylinder 93, and a threaded portion 109 provided at the tip is connected to the threaded hole 11 at the end of the sliding body 83.
1 and fixed with a nut 113.

115.117 is the piston 1 in the cylinder 93
This port communicates with a chamber 119 on the piston rod side partitioned by 07 and a chamber 121 on the opposite side.

123 and 125 are brackets at both ends of the upper mold support 37; 127 is a shaft portion at one end of the upper mold 45; and 129 is a shaft portion 127.
131 is a sliding body that fixes the rack 133 that meshes with the sector gear 129; 135 is a synonder; 137 is a piston rod; 139 and 141 are ports each communicating with a chamber on the piston rod 137 side of the cylinder 135. and a port leading to the opposite chamber.

The mechanism for operating the upper mold 45 is the same in structure and operation as the mechanism for operating the lower mold described above, and therefore detailed explanation will be omitted here.

FIG. 6 is an explanatory diagram showing a circuit system for operating the cylinder, where 143 is a switching valve and 145 is a pump.

In the above configuration, when bending the plate material 11, when the switching operation valve 143 is switched to the A position in FIG. , the cylinder 93 contracts and the cylinder 135 extends.

Therefore, as shown in FIG. 2, the rack 81 is moved to the left.
Further, the rack 133 moves to the right, and the fan-shaped gears 75 and 129 simultaneously rotate in the direction of the arrow A and the opening in FIG. It is held in the position shown.

Under these conditions, when the plate material 11 is placed on the lower die 7 and the ram 39 is lowered, the plate material 11 is placed on the male mold part 15.
, and is pressed between the female mold parts 49 and bent downward.

Next, when the ram 39 is raised to move the plate 11 to an appropriate position and the switching valve 143 is switched to the B position, the pressure fluid is simultaneously sent to the port 117 of the cylinder 93 and the port 139 of the cylinder 135. Therefore, the cylinder 93 expands and the cylinder 135 contracts.

Therefore, contrary to the above, in FIG.
1 moves to the right, and the rack 133 moves to the left, and the fan-shaped gears 75 and 129 simultaneously rotate in the directions opposite to arrows A and 2 in FIG. and the male mold part 51 of the upper mold 45 are held at corresponding positions.

In this state, when the ram 39 is lowered, the plate material 11 is pressed between the female part 13 and the male part 45 and bent upward.

As can be understood from the above description of the embodiments, the gist of the present invention is that the structure is as described in the claims of the utility model registration. It can be bent repeatedly and continuously.

In particular, in the present invention, since the upper and lower molds integrally equipped with a male mold part and a female mold part are provided so as to correspond to each other, it is only necessary to simply rotate the upper mold and the lower mold, and the plate material It is possible to form a plate material into, for example, a wave shape without inverting the material.

Moreover, since the inside of both ends of the upper die is biased to the left by the bullet, there is no sagging due to its own weight, and the upper die rotates smoothly and maintains accuracy. It is something.

It should be noted that the present invention is not limited to the above embodiments, but can be implemented in other forms by making appropriate design changes.

[Brief explanation of the drawing]

Fig. 1 is a front view of the embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a sectional view taken along line III-III in Fig. 1, Fig. 4 is an oblique view of the locking piece, and Fig. 5 is a side view. is a plan sectional view of the attachment part of the locking piece,
FIG. 6 is an explanatory diagram of the cylinder operating circuit. Explanation of symbols representing main parts of the drawings: 1...lower die support, 7...lower die, 11...plate material, 37...upper die support, 45...upper die.

Claims (1)

[Scope of utility model registration request] A lower die 7 integrally equipped with a female die part 13 and a male die part 15 is attached to a lower die support 1 in a press machine so as to be rotatable back and forth about an axis in the longitudinal direction. An upper mold 45 integrally provided with a male mold part 51 corresponding to the female mold part 13 of the lower mold 7 and a female mold part 49 corresponding to the male mold part 15 of the lower mold 7 is reciprocated on the upper mold support 37. A spring 53 is provided to be movably mounted and is provided between a position inside both ends of the upper mold 45 and the upper mold support 37 for urging the upper mold 45 upward. The rotating mold of the press machine is a feature.