JP2003145231A - Structure for clamping die in press die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide die clamping structure by which the reliability in a die changing work is raised, also the cost of which is inexpensive and by which die changing is automatable in the die clamping structure in a press die. SOLUTION: By fixing rail-like support flanges 22 on both sides of the underside of an upper mounting plated 20 and slidably mounting upside flanges 31 of the upper die 30 of a press along the support flanges 22, the upper die 30 of the press is attached to the upper mounting plate 20 and, by providing locating means by recess-projection fitting between the insides of the support flanges 22 and the upside flanges 31 of the upper die 30 of the press and also arranging locking means such as locking cylinders 25 and locking screw members 26 on the upper mounting plate 20, the upper die 30 of the press is located in a prescribed position of the upper mounting plate 20 and is locked and fixed in a clamped state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die clamp structure for a press die, and more particularly to a die for a press die which can secure a reliable clamped state, is inexpensive, requires less maintenance, and can reduce the number of setup steps. Regarding the clamp structure.

[0002]

2. Description of the Related Art Normally, the interior side of a vehicle body panel is
Various interior parts are installed.

This type of interior parts has a low material cost,
In addition, since mass productivity is required, the raw material of the fiber such as the non-woven mat (which is impregnated with the thermoplastic resin component as the binder) is subjected to the softening treatment by heat, and then the cold press molding is performed, as shown in FIG. The part 1 is molded into the required shape.

FIG. 9 shows a press die used for molding the interior component 1 of this type. In the press die 2, the press upper die 4 is fixed to the lower surface of the upper mounting plate 3 and the lower mounting plate 5 is attached.
The lower press die 6 is fixed to the upper surface of the.

Then, by driving the lifting cylinder 3a connected to the upper mounting plate 3, the upper mounting plate 3 and the upper press die 4 are moved up and down by a predetermined stroke to draw the interior part 1 into a desired shape. ing.

Further, for the interior parts 1 having different shapes, the press upper mold 4 having different specifications is corresponded to the upper mounting plate 3 by mold replacement.

Press upper die 4 for conventional upper mounting plate 3
The fixing structure, that is, the clamp structure will be described with reference to FIG. 10. Conventionally, the upper surface flange 4a of the upper press die 4 is conventionally used.
On the other hand, in reality, the helical clamps 7 are provided at the four corners of the upper mounting plate 3, and the upper surface flanges 4a of the upper press die 4 are clamped and fixed by the four helical clamps 7.

[0008]

As described above, in the conventional die clamp structure using the helical clamp 7 or the like, there is a possibility that the upper die 4 of the press may drop due to a clamping error, resulting in die damage. In addition, since it is necessary to confirm whether or not the helical clamp 7 is securely clamped, it is difficult to automate die replacement in the press upper die 4, which is a major factor that hinders labor saving. ing.

Further, the cost of the helical clamp 7 and the like is high, and the clamp is often broken, and maintenance must be performed frequently, which is also a major factor in raising the processing cost.

The present invention has been made in view of the above circumstances, and is a die clamp structure for locking the upper press die of the press die to the upper mounting plate in a clamped state, and a reliable clamped state can be obtained. At the same time, it is an object of the present invention to provide a die clamp structure for a press die which is inexpensive, requires less maintenance, and is capable of automating die exchange.

[0011]

In order to achieve the above object, the invention according to claim 1 of the present application is such that an upper press die is fixed to an upper attachment plate to which a lifting cylinder is attached, and a lower press die is attached. A press die having a lower press die attached to an attachment plate, wherein a die clamp structure in a press die in which an upper press die is clamped to an upper attachment plate is provided with support flanges on both lower surfaces of the upper attachment plate. After fixed, the upper flange of the press upper die is slid into the slide groove formed between the upper mounting plate and the support flange, and then the press upper die is located at a predetermined position by the locating means and the upper mounting plate by the locking means. It is characterized in that the upper die of the press is fixed to the lock.

The press die can be applied to cold press molding, hot press molding, mold press molding and the like.

Further, as a locating means between the upper mounting plate and the press upper die, a hole portion or a recess is provided in the upper flange of the press upper die, and correspondingly, the upper surface of the support flange of the upper mounting plate is provided. A protrusion may be provided and the protrusion may be fitted into the hole or the recess so as to have a locate function. Alternatively, the support flange may be provided with the hole or the recess and the upper flange of the press upper die may be correspondingly provided. You may make it provide the said hole part or the protrusion which fits in a recessed part in the lower surface of this.

As the locking means, it is sufficient that the upper flange of the press upper die can be urged downward with a constant pressure.
The piston may be pressed by the piston rod of the lock cylinder or the lock screw member may be tightened.

As is apparent from the above structure, in the mold clamping structure according to the present invention, the support flanges provided on both sides of the lower surface of the upper mounting plate can surely support both sides of the upper flange of the upper press die. Therefore, there is almost no falling element.

Further, the upper flange of the press upper die may be slid between the upper mounting plate and the support flange to locate by the locating means, and the press upper die may be locked and fixed to the upper mounting plate by the locking means. Exchange can be automated.

Further, a complicated clamp mechanism such as a conventional helical clamp can be abolished, and the structure is simple and there are few failures,
Not only is it cost effective, but the number of maintenance steps can be reduced.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a die clamp structure in a press die according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a side view showing the overall structure of a press die according to the present invention, FIG. 2 is a perspective view showing an upper mounting plate and a press upper die in the same press die, and FIGS. Each explanatory view showing the process of slidingly mounting the upper press die on the plate,
FIG. 5 is an explanatory view showing the structure of the locking means in the clamp structure in the press die, FIG. 6 is an explanatory view showing a modification of the locking means in the clamp structure, and FIG. 7 is a die clamp structure in the press die according to the present invention. It is each explanatory view showing the locating means.

Referring to FIG. 1, a press die 1 according to the present invention.
0 is a press upper die 3 fixed to the lower surface of the upper mounting plate 20.
0 and the lower press die 5 fixed to the upper surface of the lower mounting plate 40
It is composed of 0 and 0.

In particular, in the present invention, the upper mounting plate 20
The clamp structure of the upper press die 30 between the upper press die 30 and the upper die 30 is characterized. That is, as shown in FIGS. 1 and 2, an elevating cylinder 21 is connected to the upper surface of the upper mounting plate 20 substantially at the center, and the elevating cylinder 21 drives the upper mounting plate 20 to move vertically by a predetermined stroke. Do.

On both sides of the lower surface of the upper mounting plate 20, long support flanges 22 having an L-shaped cross section are fixed by welding, bolting or the like, and between the upper mounting plate 20 and the support flange 22. A slide groove 23 is provided.

Further, on the inner surface of the support flange 22, projections 24 are formed on the portions corresponding to the four corners of the upper mounting plate 20.
Is projected. As will be described later, the protrusion 24 has a locate function for the upper press die 30.

Further, the upper mounting plate 20 is provided with fitting holes 20a for fitting and fixing the locking cylinders 25, and the locking cylinders 25 to be fitted into the fitting holes 20a are arranged at four positions. . In addition, as shown in the figure,
It is preferably provided at four positions which are symmetrical to each other.

On the other hand, the press upper die 30 clamped and fixed to the upper mounting plate 20 has an upper surface flange 31 which is slightly larger than the outer shape of the press upper die 30 integrated on the upper surface.
Holes 32 are formed at four corners of the upper surface flange 31.

Next, with reference to FIGS. 3 to 5, a work procedure for clamping and fixing the upper press die 30 to the upper mounting plate 20 will be described.

First, the upper surface flange 3 of the upper press die 30.
1 is a slide groove 23 on both sides formed by an upper mounting plate 20 and support flanges 22 mounted on both sides thereof.
If both sides of the upper surface flange 31 of the upper press die 30 are inserted in the upper press die 30, as shown in FIG.
The upper surface flange 31 is slid while being lifted upward.

Further, when the press upper die 30 is slid to the final position, the projection 2 protruding from the support flange 22 is provided.
4 is fitted into the hole 32 formed in the upper surface flange 31 of the upper press die 30, and as shown in FIG.
The press upper die 30 is located at a predetermined position on the upper mounting plate 20 by the fitting action of the hole 4 and the hole 32. The hole 32
Alternatively, a recess may be provided.

Then, as shown in FIG. 5, at this locate position, the lock cylinder 25 provided on the upper mounting plate 20 operates so that the piston rod 25a moves downward on the upper surface flange 31 of the upper press die 30. Because of the urging force, the upper press die 30 does not move up and down and is clamp-locked at a predetermined locate position.

In place of the lock cylinder 25 shown in FIG.
A locking screw member 26 can be used, as shown in FIG. The locking screw member 26 is provided on the upper mounting plate 20.
When the lock screw member 26 is tightened by being screwed into the screw hole 20 b provided in the upper surface of the screw hole 26, the tip of the lock screw member 26 presses the upper surface flange 31 downward.

Therefore, in comparison with the lock cylinder 25, the structure is simplified, and even if there is a slight variation in the mounting posture of the press upper die 30 with respect to the upper mounting plate 20, the locking screw member is provided. It can be effectively dealt with by adjusting 26.

Further, as shown in FIGS. 7 (a), 7 (b) and 7 (c), the protrusion 2 as the locating means of the upper press die 30.
4 has a side surface 24a tapered as shown in FIG. 7 (a), or a curved surface 24b is formed on the upper surface as shown in FIG. 7 (b), or as shown in FIG. 7 (c). In addition, by setting the upper surface to the conical surface 24c, the projection 24 has a guide function, and the projection 24 and the hole 32 can be fitted smoothly.

Further, in this embodiment, the protrusions 24 are formed on the support flange 22 attached to the upper attachment plate 20, and correspondingly, the four protrusions of the upper flange 31 of the press upper die 30 are used for locking. Although the hole 32 is opened, the support flange 22 has a hole (not shown),
Alternatively, the recesses may be provided, and the projections may be provided on the lower surfaces of the four corners of the upper flange 31 of the upper press die 30.

As described above, according to the present invention, the support flange 2 having the rail function is provided on both sides of the lower surface of the upper mounting plate 20.
2 is fixed, the upper surface flange 31 of the press upper die 30 is slid along the support flange 22, and clamped by locating means and locking means. Therefore, conventional helical clamp, toggle clamp, etc. Compared with the case where the clamp structure of No. 3 is used, the upper press die 30 is less likely to drop, the upper press die 30 can be securely locked, and damage to the die due to the fall can be prevented, and the structurally Since the clamp mechanism having a complicated structure is not required, the cost is low, the number of failures is small, the maintenance frequency can be reduced, and the press upper die 30 can be slide-locked to the upper mounting plate 20, so that die exchange can be automated. This can contribute to labor saving.

[0035]

As described above, according to the die clamp structure of the press die according to the present invention, the support flanges are fixed to both sides of the lower surface of the upper mounting plate, and the upper flanges of the upper die for press along the support flanges. Since it is configured to be slid on and clamp-locked by the locating means and the locking means, there is an effect that die exchange can be automated and die setup man-hours can be significantly reduced.

Further, according to the die clamp structure in the press die according to the present invention, since the upper press die is supported by the support flanges provided on both sides of the upper mounting plate, there is no risk of dropping and the press upper die can be used for a long period of time. The mold can be reliably locked and fixed, and the expensive clamp mechanism of the related art can be eliminated, resulting in low cost and reduced maintenance frequency.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of a press die to which a die clamp structure according to the present invention is applied.

FIG. 2 is a perspective view showing an upper mounting plate and a press upper die in the press die shown in FIG.

FIG. 3 is an explanatory view showing a state at an initial stage of mounting an upper press die on an upper mounting plate in the press die shown in FIG.

FIG. 4 is an explanatory view showing a state in which an upper press die is attached to an upper mounting plate of the press die shown in FIG.

FIG. 5 is an explanatory view showing the operation of the lock cylinder in the die clamp structure according to the present invention.

FIG. 6 is an explanatory view showing the operation of the locking screw member in the die clamp structure according to the present invention.

FIG. 7 is a side view showing a modified example of a protrusion that is a locating means in the mold clamping structure according to the present invention.

FIG. 8 is a cross-sectional view showing an automobile interior component.

FIG. 9 is a side view showing a press die for molding a conventional automobile interior part.

FIG. 10 is an explanatory view showing a conventional die clamp structure in a press die.

[Explanation of symbols]

10 Press die 20 Upper mounting plate 21 Lifting cylinder 22 Support flange 23 Slide groove 24 protrusions 25 Lock Cylinder 25a piston rod 26 Lock screw members 30 Press upper mold 31 Top flange 32 holes 40 Lower mounting plate 50 Press lower mold

Claims (4)

[Claims] 1. A press upper mold (30) is fixed to an upper mounting plate (20) having a lifting cylinder (21) mounted, and a press lower mold (50) is mounted to a lower mounting plate (40). A press die (10) which comprises a die clamping structure in a press die for fixing an upper press die (30) to an upper mounting plate (20) in a clamped state, wherein both lower surfaces of the upper mounting plate (20) are provided. After the support flange (22) is fixed, the upper surface flange (31) of the press upper die (30) is slid and mounted in the slide groove (23) formed between the upper mounting plate (20) and the support flange (22). The press upper die (30) is located at a predetermined position by the locating means, and the press upper die (30) is locked and fixed to the upper mounting plate (20) by the locking means. Type clamp structure in the mold. 2. The locating means comprises a support flange (22) and a top flange (3) of a press upper die (30).
1) A projection (24) is formed on one side, and a recess or a hole (32) for fitting with the projection (24) is provided on the other side. A die clamp structure for the described press die. 3. The mold clamping structure for a press mold according to claim 1, wherein the locking means is a locking cylinder (25) mounted on the upper mounting plate (20). 4. The mold clamping structure for a press mold according to claim 1, wherein the locking means is a locking screw member (26) screwed to the upper mounting plate (20).