JPH0957769A - Molding equipment - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To move an upper mold at a mold clamping position with respect to a lower mold in a predetermined mold removing direction, and then to further move it in a mold opening direction apart from the lower mold. In the above, there is provided a forming die device capable of moving the upper die favorably and reducing the number of parts. A tip end portion of a rod 38 of a mold opening / closing cylinder 39 is rotatably connected to a second bracket 45 provided on an upper mold 42 via a cylinder knuckle pin 41a. When the rod 38 is projected, its driving force is increased by the upper mold 42.
Acting as a moving force on the two rollers 44 provided on the first bracket 43 disposed on the. Each roller 44
Along with the movement along the die-cutting direction guide portion 35a and the die-opening direction guide portion 35b formed on the rail 35 erected on the base 32, the upper die 42 separates from the lower die 31 while rotating. Reach the mold opening position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a lower die provided on a base and an upper die movable relative to the lower die, and the upper die at a die clamping position is moved in a predetermined die cutting direction. The present invention relates to a molding die apparatus which is moved in a mold opening direction apart from a lower mold after being further rotated.

[0002]

For example, a conventional structure of a foaming resin molding die apparatus is shown in FIGS. The lower mold 1 is provided on the base 2, and the left and right sides of the lower mold 1 (see FIG.
A rail frame 4 to which a rail 3 is attached is erected on the base 2. The rail 3 includes a die-cutting direction guide portion 5a extending in the vertical direction,
A rail groove 5 is formed which has a die opening direction guide portion 5b which is continuous with the upper end of the die removal direction guide portion 5a and extends obliquely upward.

Outside the rail frames 4 (opposite to the side of the lower mold 1), a hinge plate 6 is erected on the base 2 and a mold opening / closing having a rod 7 capable of reciprocating. A working cylinder 8 is provided. On the hinge plate 6, one end of the first link 9 is located outside the rail frame 4, and one end of the second link 10 is located between the lower mold 1 and the rail frame 4, respectively. Hinge pin 1
It is rotatably supported around 1. A link groove 10a is formed in the other end portion of the second link 10.

The base end portion of the mold opening / closing cylinder 8 is attached to a cylinder mounting bracket 12 provided on a base 2 and the shaft 1 is attached thereto.
It is rotatably supported at 3. A cylinder knuckle 14 is provided at the tip of the rod 7 with a cylinder knuckle pin 14a.
The cylinder knuckle 14 is rotatably connected to the other end of the first link 9 by the cylinder knuckle pin 14a, and is not shown in the drawing.
It is also rotatably connected to an intermediate portion of the second link 10.

On the other hand, the upper mold 15 is located above the lower mold 1,
The mold can be moved between the mold closing position shown in FIG. 6 and the mold opening position shown in FIG. On both the left and right sides of this upper mold 15, the first
Brackets 16 are attached to the first bracket 16 and two first rollers 17 each of which moves along the rail groove 5 of the rail 3 and the link groove 10a.
And a second roller 18 that moves along.

A clamp mechanism 19 is provided from the upper surface of the upper die 15 to the front thereof. Such a clamp mechanism is not shown in detail, but is also provided on the rear surface of the upper die 15 and the lower die 1. It is provided. This clamping mechanism 1
The clamp arm 19a of No. 9 is rotatably provided on the second bracket 20 attached to the upper mold 15 by a shaft 21, and a clamp claw portion 19b is formed at its tip. The clamp claw portion 19b engages with the clamp receiving portion 22 provided on the base 2 when the upper mold 15 is at the mold clamping position.

A clamp mechanism cylinder 19c is attached to the upper surface of the upper die 15. A cylinder knuckle 19e is provided at the tip of a rod 19d provided on the clamp mechanism cylinder 19c, and a cylinder knuckle pin 19f is provided on the cylinder knuckle 19e.
At one end of the clamp arm 19a is rotatably connected.

In the above-described structure, in order to change the mold clamping state shown in FIG. 6 to the mold opening state shown in FIG. 9, first, the clamp mechanism cylinder 19c is driven and the rod 19d thereof is retracted, whereby the clamp mechanism 19 is retracted. Disengage. After that, when the mold opening / closing cylinder 8 is driven and the rod 7 is projected, the first link 9 and the second link 10 are driven.
Rotates about the hinge pin 11 in the direction of arrow A in FIG. 6, and the second roller 18 moves upward in the link groove 10a while slightly moving up.
Moves upward along the die-cutting direction guide portion 5a of the rail groove 5, so that the upper die 15 rises to reach the die-cutting position shown in FIG.

From this state, if the rod 7 is further projected, each first roller 17 moves along the arc portion of the die opening direction guide portion 5b of the rail groove 5, and then extends ahead of the arc portion. Since it moves along the straight line part, the upper mold 1
While rotating 5, the mold 5 separates from the lower mold 1, and finally reaches the mold opening position shown in FIG. As a result, the molded product can be easily removed. In addition, in FIG. 9, a line P indicated by a one-dot chain line indicates a movement locus of the cylinder knuckle pin 14a.

In addition, after removing the molded product, in order to perform mold clamping for re-molding, in the reverse order to the above-mentioned order,
Mold opening / closing cylinder 8 and clamp mechanism cylinder 19c
Should be driven.

However, in the conventional structure as described above, in order to transmit the driving force of the mold opening / closing cylinder 8 to the upper die 15, the first link 9 and the second link 9 are used as the driving force transmitting members.
Since the link 10 is used, the number of parts is increased, and accordingly, there is a drawback that the assembly of the device is complicated and the size of the entire device is inevitable.

The present invention has been made in view of the above circumstances, and an object thereof is to be able to favorably move the upper die with respect to the lower die, and yet to reduce the number of parts. Accordingly, it is an object of the present invention to provide a molding die apparatus that can facilitate the assembly of the apparatus and reduce the size of the entire apparatus.

[0013]

SUMMARY OF THE INVENTION The present invention comprises a lower mold provided on a base and an upper mold movable with respect to the lower mold. In a molding die apparatus, which is moved in a drawing direction and then moved in a mold opening direction apart from the lower mold while being further rotated, a mold drawing direction guide part and a mold opening part fixedly provided on the base. A guide member having a direction guide portion, a support member provided on the upper mold, and a moving member provided on the support member and moving along the mold removing direction guide portion and the mold opening direction guide portion are reciprocally movable. A rod that is rotatably provided on the base side, and the tip end portion of the rod is rotatably connected to the support member, and the upper die is moved by the movement of the rod through the moving member. Die guide direction and mold opening direction plan Is obtained by a structure comprising a drive cylinder that moves along the part.

In the molding die apparatus constructed as described above, the tip of the rod of the drive cylinder is rotatably connected to the support member provided on the upper die, and the reciprocating movement of the rod moves the upper die. Therefore, unlike the conventional one in which a link member is used as a driving force transmission member for moving the upper die, the link member can be eliminated.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is applied to a molding apparatus for foamed resin will be described below with reference to FIGS. The lower die 31 is provided on the base 32.
Rails 33 serving as guide members are provided on both left and right sides of the lower mold 31.
A rail frame 34 to which is attached is erected on the base 32 (see FIG. 5). A rail groove 35 is formed in the rail 33. The rail groove 35 includes a die-cutting direction guide portion 35a composed of a straight line portion below the arc portion, and the arc portion and a straight portion extending obliquely upward from the arc portion. And a mold opening direction guide portion 35b.

A cylinder mounting bracket 36 is erected on the base 32 outside the rail frames 34. And, this cylinder mounting bracket 36,
A mold opening / closing cylinder 39 having a rod 38 capable of reciprocating movement is provided between the cylinder mounting plate 37 mounted on the rail frame 34 and a cylinder opening / closing cylinder 39 so that the middle portion thereof is supported by a shaft 40 so as to be rotatable. Has been.
A cylinder knuckle 41 is connected to the tip of the rod 38 by a cylinder knuckle pin 41a.

On the other hand, the upper mold 42 is located above the lower mold 31, and is movable between the mold clamping position shown in FIG. 1 and the mold opening position shown in FIG. On the left and right sides of this upper mold 42,
The first bracket 43 is attached, and the first bracket 43 is provided with two rollers 44 that are moving members that move along the rail groove 35 of the rail 33.

Second brackets 45 are provided on both the left and right sides of the upper surface of the upper mold 42. The second bracket 45 has the cylinder knuckle pins 41a on the rail frame 34 in the mold clamped state. The end of the cylinder knuckle pin 41a is attached so as to be located in the front. The first bracket 43 and the second bracket 45 are support members according to the present invention.

A first clamp mechanism 46 is provided from the upper surface to the front of the upper mold 42. The clamp arm 46a of the first clamp mechanism 46 is a third clamp mounted on the upper mold 42. The bracket 47 is rotatably supported by a shaft 48, and a clamp claw portion 46b is formed at the tip thereof. The clamp claw portion 46b engages with the first clamp receiving portion 50 provided on the clamp receiving portion mounting bracket 49 disposed on the base 32 when the mold is clamped.

On the upper surface of the upper mold 42, the rod 4
A cylinder 46d for a clamp mechanism having 6c is attached, a cylinder knuckle 46e is provided at the tip of the rod 46c, and the cylinder knuckle 46e includes
One end of the clamp arm 46a is rotatably connected by a cylinder knuckle pin 46f.

Further, a second clamp mechanism 51 is provided on the rear surfaces of the upper mold 42 and the lower mold 31, and the clamp arm 51a of the second clamp mechanism 51 is arranged on the base 32. It is rotatably supported by the shaft 53 of the clamp arm mounting bracket 52. A clamp claw 51b is formed at the tip of the clamp arm 51a, and the clamp claw 51b is
In the mold clamped state, the second clamp receiving portion 54 provided on the upper mold 42 is engaged.

At the rear of the clamp arm mounting bracket 52, a clamp cylinder mounting bracket 55 is provided on the base 32, and a clamp mechanism cylinder 51c is provided.
It is rotatably supported by a shaft 56, and a cylinder knuckle 51e is provided at the tip of the rod 51d.
This cylinder knuckle 51e corresponds to the clamp arm 5
A cylinder knuckle pin 51f is rotatably connected to an intermediate portion of 1a. Next, the operation of the above configuration will be described. It is now assumed that the upper mold 42 is in the mold clamping position as shown in FIG. The following procedure is executed to complete the molding of the product and change the mold clamped state to the mold open state. First, the clamp mechanism cylinders 46d and 51c of the first and second clamp mechanisms are driven to drive the rods 46c and 5c.
Move back 1d. Then, the clamp arm 46a rotates about the shaft 48 of the third bracket 47, the engagement between the clamp arm 46a and the first clamp receiving portion 50 is released, and the clamp arm 51a is attached to the clamp arm. The clamp arm 51a and the second clamp receiving portion 54 are rotated about the shaft 53 of the bracket 52.
Is disengaged.

Then, the mold opening / closing cylinder 39 is driven,
When the rod 38 is projected, the driving force is transmitted to the second bracket 45 via the cylinder knuckle pin 41a.
And further acts as a moving force of each roller 44 provided on the first bracket 43. At this time, each roller 44 moves along the die-cutting direction guide portion 35a, so that the die opening / closing cylinder 39 rotates about the shaft 40 in the direction of arrow B in FIG. Moves up to the die-cutting position shown in FIG. At this time, the angle difference between the direction in which the rod 38 is projected and the direction in which the upper mold 42 is raised is approximately 20 degrees, and the driving force of the mold opening / closing cylinder 39 is efficiently used for raising the upper mold 42. It is what

When the rod 38 is further projected from this state, each roller 44 moves along the mold opening direction guide portion 35b, the upper mold 42 is rotated and separated from the lower mold 31, and finally the drawing is performed. The mold opening position shown in 4 is reached. As a result, the molded product can be easily removed. In addition, in FIG.
A line Q indicated by a one-dot chain line indicates a movement locus of the cylinder knuckle pin 41a.

Next, when the upper mold 42 is returned from the mold opening position to the mold clamping position, the mold opening / closing cylinder 39 is driven and the rod 38 thereof is retracted. Then, as mentioned above,
As the driving force of the mold opening / closing cylinder 39 acts as the moving force of each roller 44, each roller 44 is guided in the mold opening direction guide portion 35b and the mold removing direction in a direction opposite to the above-described mold opening direction. It comes to move along the portion 35a.
At this time, the rod 38 in the completely opened state shown in FIG.
The angle difference between the direction in which the mold is retracted and the direction in which the upper mold 42 moves to the mold clamping position is approximately 30 degrees.
Even in this case, the driving force of the upper mold 42 is
Is used for the movement of.

After the upper mold 42 reaches the mold clamping position shown in FIG. 1, the clamp mechanism cylinders 46d and 51c of the first and second clamp mechanisms 46 and 51 are driven to drive the rods 46c and 51d. By projecting, the first clamp mechanism 46 and the second clamp mechanism 51 are engaged, and the upper mold 42 is held at the mold clamping position.

As described above, according to this embodiment described above,
Since the tip of the rod 38 of the die opening / closing cylinder 39 is rotatably connected to the second bracket 45 provided on the upper die 42, the reciprocating movement of the rod 38 causes the upper die 42 to move. Unlike the conventional one in which the driving force of the drive cylinder is transmitted to the upper die via the link member to move the upper die, the link member can be eliminated. Therefore, the number of parts can be reduced correspondingly, and accordingly, the assembling of the device and the downsizing of the entire device can be achieved.

[0028]

As is apparent from the above description, according to the present invention, the tip of the rod of the drive cylinder is rotatably connected to the supporting member provided on the upper die, and the reciprocating movement of the rod causes the rod to move. Since the upper mold comes to move along the mold removing direction guide part and the mold opening direction guide part, the upper mold can be favorably moved with respect to the lower mold,
Unlike the conventional one in which the driving force of the drive cylinder is transmitted to the upper die via the link member to move the upper die, the link member may be unnecessary, and accordingly, the number of parts can be reduced accordingly. As a result, it is possible to facilitate the assembly of the device and reduce the size of the entire device.

[Brief description of drawings]

FIG. 1 is a right side view showing a mold clamping state of an embodiment of the present invention.

FIG. 2 is a front view of a main part.

FIG. 3 is a right side view showing a state in which the upper die has reached a die cutting position.

FIG. 4 is a right side view showing a state in which the upper mold has reached the mold opening position.

FIG. 5 is an overall perspective view

FIG. 6 is a view corresponding to FIG. 1 showing a conventional example.

FIG. 7 is a diagram corresponding to FIG. 2;

FIG. 8 is a diagram corresponding to FIG. 3;

FIG. 9 is a view corresponding to FIG.

[Explanation of symbols]

In the drawings, 31 is a lower die, 32 is a base, 33 is a rail (guide member), 35a is a die-cutting direction guide portion, 35b is a die-opening direction guide portion, 38 is a rod, 39 is a die opening / closing cylinder (driving cylinder). ), 42 is an upper die, 43 is a first bracket (supporting member), 44 is a roller (moving member), and 45 is a second
It is a bracket (supporting member).

Claims (1)

[Claims] 1. A lower die provided on a base and an upper die movable with respect to the lower die, and after moving the upper die at a die clamping position in a predetermined die cutting direction, A molding die apparatus configured to move in a mold opening direction apart from the lower mold while being further rotated, wherein a guide member fixedly provided on the base and having a mold removing direction guide part and a mold opening direction guide part. A supporting member provided on the upper mold, a moving member provided on the supporting member, the moving member moving along the mold removing direction guide part and the mold opening direction guide part, and the base having a reciprocally movable rod. The tip of the rod is rotatably provided on the table side, and the tip of the rod is rotatably connected to the support member, and the upper die is moved by the rod to move the upper die through the moving member. Move along the mold opening direction guide Formed by and a dynamic cylinder mold apparatus.