JP2529085Y2 - Scrap structure in wood mold base mold - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for treating scrap in a mold for forming a wood mat base such as a door trim base.

[0002]

2. Description of the Related Art Conventionally, for example, in a door trim base material W of a vehicle door, as shown in FIG.
A mounting base portion Wb which is folded in a letter shape is formed. A molding die for press-forming a wood-based mat base material having a so-called undercut portion such as the mounting base portion Wb is shown in FIG. Alternatively, there is a configuration as shown in FIG. In the drawing, only the molded portion of the mounting base portion Wb is shown.

[0005] The molding die includes an upper die 1 and a lower die 2. Molding surfaces 1a and 2a are formed on opposing surfaces of the two dies 1 and 2, respectively, so that the trim base material W can be molded. Further, although not shown, a plurality of gas vent holes penetrating in the vertical direction are formed in the upper mold 1 on the back side of the design surface, and a hot plate for heating the molds 1 and 2 to a predetermined temperature is provided. It is attached.

On the other hand, as a molding material W 'for the trim base material W, a wood-based laminated fiber obtained by mixing a defibrated wood fiber and a binder such as a phenolic thermosetting resin is used. After laminating W 'on the molding surface 2a of the lower mold 2 to a predetermined thickness, the mold is clamped and press-molded to a predetermined shape, and simultaneously, the upper and lower dies 1 and 2 are heated and cured by heat to a predetermined shape. Is obtained.

[0005] The trim base material W thus formed is
Next, the configuration of a molding die for simultaneously molding the mounting base Wb having a substantially U-shaped cross section will be described with reference to FIG. 3 or FIG. The upper mold 1 has a nesting member 3 and an upper cam driver 4.
On the other hand, the lower die 2 is provided with a lower die shifting cam 5 slidable on a horizontal slide surface 2b provided separately from the molding surface 2a.

First, the nesting member 3 is slidably mounted on a joining surface 1b provided at a certain angle to the right in the figure at a fixed angle with respect to the moving direction of the upper mold 1 (vertical direction in the figure). I have. Although not shown, this nesting member 3
A spring, for example, is interposed between the upper mold 1 and the upper mold 1, and the nesting member 3 is urged downward.

In the lower portion of the nest member 3 attached to the upper mold 1 in this manner, a base forming convex portion 3c projecting leftward in the figure is formed. On the lower surface of the nesting member 3 including the base forming convex portion 3c, a forming surface 3a constituting a part of the forming surface 1a of the upper die 1 is formed. In addition, the tip of the base forming protrusion 3c is provided with
At the same time, an undercut concave portion 3d for forming the folded portion Wb 'of the mounting base portion Wb is formed, and a receiving surface 3b is formed substantially horizontally on the upper surface following the concave portion 3d.

The upper cam driver 4 is fixed to the upper mold 1 and moves up and down integrally therewith. The lower part thereof is inclined downward at a predetermined angle to the left in the drawing with respect to the moving direction of the upper mold 1. An inclined slide surface 4a is formed.

On the other hand, a lower mold shifting cam 5 provided on the lower mold 2
The upper cam driver 4 slides rightward in the figure as the upper cam driver 4 descends to form a folded portion Wb 'of the mounting base Wb together with the nesting member 3. The upper cam driver 4 The inclined slide surface 5a is formed corresponding to the inclined slide surface 4a.
An undercut recess 5b is formed corresponding to d. Further, a blade portion 5c is provided at an upper edge of the molding concave portion 5b.
When the lower mold moving cam 5 advances rightward in the drawing to form the folded portion Wb ', the folded portion Wb is formed.
The terminal b ′ is configured to be cut as a scrap 9. Although not shown in the drawings, the lower die shift cam 5
Is biased by a spring in a retreating direction (left direction in the figure), and is configured to retreat as the upper die cam driver 4 rises and separate from the nesting member 3 when the mold is opened.

By forming the upper mold 1 and the lower mold 2 in this manner, the trim base material W, particularly the mounting base Wb thereof, is formed as follows. First, the predetermined molding material W 'is laminated on the molding surface 2a of the lower mold 2 to a predetermined thickness.

After setting the molding material W ', the upper mold 1
Descend. At this time, since the nesting member 3 is biased downward by a spring, the molding surface 3a is formed on the molding surface 1 of the upper mold 1.
a, and presses the molding material W ′ prior to the molding surface 1 a of the upper mold 1. When the upper mold 1 further descends, the pressing force of the nesting member 3 increases, and the upper mold 1
Also presses the molding material W '. Here, since the nesting member 3 is attached so as to be slidable in the up-down direction through the joining surface 1b inclined rightward in the drawing with respect to the moving direction of the upper mold 1, the molding material W 'is pressed down At the time when the transfer to
Is lowered, the nesting member 3 relatively moves to the left in the figure. That is, the nesting member 3 moves to the left in the drawing as the upper mold 1 descends while pressing the molding material W ′, and also presses the molding material W ′ at the base molding protrusion 3 c of the nesting member 3. It will be.

Further, as the upper mold 1 descends, the upper cam driver 4 also descends, and its inclined slide surface 4a comes into contact with the inclined slide surface 5a of the lower mold moving cam 5, and the upper mold 1 is further moved.
The lower cam 5 is pressed by the upper cam driver 4 via both slide surfaces 4a, 5a as
Therefore, it moves rightward in the drawing, that is, in a direction approaching the nesting member 3 side, against the biasing force of the spring.

As described above, as the upper mold 1 descends, the nesting member 3 and the lower mold moving cam 5 move to predetermined positions and press the molding material W 'between the lower mold 2 and the nesting member. The molding material W 'flows between the undercut recessed portion 3d of the member 3 and the undercut recessed portion 5b of the lower mold shifting cam 5 and is thermally cured, so that the mounting base portion Wb and its folded portion Wb'. Is molded.

Further, simultaneously with this molding, the folded portion Wb '
Is cut off as scrap 9 by the blade portion 5c of the lower mold approach cam 5.

Next, at the time of opening the mold, when the upper mold 1 rises, the nesting member 3 moves to the right in the drawing without ascending and is released from the formed mounting base portion Wb.
Rise with. Further, as the upper die 1 rises, the upper die cam driver 4 also moves upward, so that the lower die moving cam 5 moves to the left in the figure and separates from the nesting member 3.

As described above, since the nesting member 3 rises after being detached from the mounting base portion Wb in the horizontal direction, the formed trim base material W remains in the lower mold 2, and the mold is opened smoothly. It has a configuration. Further, the cut scrap 9 is taken upward together with the nesting member 3, that is, the upper mold 1 while being placed on the receiving surface 3 b of the nesting member 3, and is separated from the trim base material W.

[0017]

As described above, according to the conventional molding die, the scrap 9 is held upward together with the upper die 1, and the receiving surface 3b of the nesting member 3 is required for discharging the scrap. Had to be removed from.

However, although not shown, a protective fence for preventing accidents or a support column of the upper mold is generally arranged around the upper mold 1 after the mold is opened. It is not easy to take out the scrap 9 while it is in the upper position. For this reason, the scrap 9 is discharged by lowering the upper die 1 again. As described above, conventionally, it is necessary to take extra time for discharging the scrap, and therefore, the operation rate has to be reduced.

The present invention has been made in view of this problem, and an object of the present invention is to provide a scrap processing structure in a wood mat base mold capable of easily discharging scrap without taking time. Is what you do.

[0020]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems by forming a folded portion at the edge of a wooden mat substrate by using an upper mold and a lower mold. The part has a nesting member interlocking with the up-down movement of the same type, while the upper surface of the lower die is provided with the nesting member interlocking with the up-down movement of the same type via an upper cam driver provided on the upper die. A wood-based system provided with a lower mold approaching cam having a blade portion capable of forming the folded portion in cooperation with the nesting member by moving forward and backward toward the end and cutting a scrap portion at a terminal of the folded portion. In the molding die of the mat base material, a scrap catch claw for biting and holding the scrap portion when the lower mold approaching cam is advanced is provided on the front surface of the lower mold approaching cam. The lower approach cam retreats Characterized by being configured to remain on the lower mold side is taken out the scrap portion from the upper mold side by the.

[0021]

According to the above construction, the scrap is bitten and held by the scrap catch claw simultaneously with the cutting, and is taken out of the upper mold with the retraction of the lower mold approaching cam when the mold is opened, and is left on the lower mold side.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a scrap catching claw 7 is provided on the lower mold moving cam 5, and a scrap wiping pin for scraping off the scrap 9 biting and held by the scrap catching claw 7 on the lower mold 2 is provided on the lower mold 2. 6, the description is omitted because the other components do not need to be changed, and the same parts are denoted by the same reference numerals. FIG. 1 shows the mold closed state, and FIG. 2 shows the mold open state.

At substantially the center of the front surface 5d of the lower die moving cam 5, a scrap catch claw 7 for biting and holding the cut scrap 9 is attached. The scrap catch claw 7 is formed in a substantially cylindrical shape and has a burring claw formed on one end surface thereof. The burring claw is embedded in the front surface 5d in a state of projecting a predetermined amount from the front surface 5d. Is fixed.

The lower cam 5 has a front surface 5.
An insertion hole 5e having a predetermined diameter is formed in the horizontal direction from d to the rear end face. The insertion hole 5 e is formed substantially in alignment with the inner peripheral hole of the scrap catch claw 7.

On the other hand, a fixed block 10 is mounted on the horizontal slide surface 2b of the lower die 2 and behind the lower die shift cam 5, and the fixed block 10 is horizontally moved to the lower die shift cam 5 side. A scrap removing pin 6 is mounted so as not to move in the axial direction. The scrap removing pin 6 is formed to have a diameter that can be inserted into the insertion hole 5e, and is always inserted into the insertion hole 5e. Front 5
d. The scrap removing pin 6 attached in this manner is configured to relatively slide in the insertion hole 5e as the lower cam 5 moves forward and backward. When the lower die moving cam 5 reaches the rear end position (the position shown in FIG. 2), the tip end of the scrap removing pin 6 projects from the inner peripheral hole of the scrap catch claw 7 and Nail 7
Thus, the scrap 9 that is bitten and held can be wiped off.

This embodiment is constructed as described above.
With this configuration, scrap is processed as described below. As shown in FIG. 1, the mounting base Wb of the trim base material W is formed between the base forming protrusion 3c of the nesting member 3 and the lower die 2, and is formed at the tip of the base forming protrusion 3c. The folded portion Wb 'of the mounting base Wb is undercut between the undercut recessed portion 3d and the undercut recessed portion 5b formed in the lower mold cam 5.

Further, at the same time as the formation of the folded portion Wb, the end of the folded portion Wb 'is cut off as a scrap 9 by the blade portion 5c formed on the lower mold moving cam 5.
At substantially the same time as the cutting, the scrap 9 is pressed against the side wall 3e of the nesting member 3 by the scrap catching claws 7 and is bitten and held. The above operations are performed almost simultaneously with the formation of the trim base material W.

Thereafter, when opening the mold, as shown in FIG. 2, the upper cam driver 4 rises with the rise of the upper mold 1 and the lower mold moving cam 5 retreats with the rise of the upper cam driver 4. I do. Then, by the retreat of the lower die moving cam 5, the scrap 9 is taken out from the receiving surface 3b of the nesting member 3 and is separated from the upper die 1 side while being bitten and held by the scrap catch claw 7.

Further, the upper mold 1 rises and the lower mold shifting cam 5
With the retraction, the scrap removing pin 6 moves relatively to the lower type shift cam 5, and its tip projects from the inner peripheral hole of the scrap catch claw 7 and bites into the scrap catch claw 7. The retained scrap 9 is removed from the lower mold 2
It's spilled up.

As described above, according to the configuration of the forming die of the present embodiment, the scrap 9 is not taken upward together with the upper die 1, but is reliably left on the lower die 2, so that the worker can This scrap can be easily discharged from the mold after the mold opening is completed. Therefore, it is not necessary to take time to discharge the scrap as in the related art, and the operation rate can be improved.

Conventionally, since it takes a lot of time to discharge the scrap, the scrap is not discharged every time one molding process is completed, and the scrap is left as it is. In the scrap processing structure of this example, the scrap is easily discharged simultaneously with the removal of the molded product (door trim base material W). The scrap can be discharged every time one molding process is completed without lowering the operation rate.
There is an effect that the maintenance of the equipment is easy and the prevention of the accident or the securing of the quality is surely performed.

Further, the scrap processing structure of the present embodiment makes it possible to completely automate a scrap processing step of automatically discharging scraped-out scraps by appropriate means without manual operation.

In this example, 1 in FIG. 1 or FIG.
The example in which one scrap catching claw 7 and one scrap removing pin 6 are provided for the lower lowering cams 5 at the locations has been illustrated, but the present invention is not limited to this. A configuration in which one or two or more scrap removing pins may be provided, and the scrap catch claw 7 is exemplified by a substantially cylindrical shape, but the scrap catch claw can bite and hold the cut scrap. The scrap removing pin may have a strip shape.

Further, in this embodiment, the scrap catch pawl 7
Although the configuration in which the scrap removing pin 6 is provided in order to remove the scrap 9 that has been bitten and held is illustrated, a configuration in which the scrap removing pin 6 is not provided may be employed.
In this case, the insertion hole 5e and the fixing block 10
Is unnecessary.

The point is that the cut scraps are bitten and held by the scrap catch claws so that the scraps are not detached from the upper mold and opened with the upper mold when the mold is opened. Various embodiments can be implemented without departing from the scope of the claims for utility model registration.

[0036]

[Effects of the Invention] The present invention adopts the above-described structure, so that the cut scrap is not taken upward with the upper die but is scraped off onto the lower die.
Since the molded product can be easily discharged in association with the work of taking out the molded product, it is not necessary to take time to discharge the scrap as in the related art, so that the operation rate can be improved.

[0037]

[Brief description of the drawings]

FIG. 1 is a partial vertical cross-sectional view of a mold when a mold is closed according to an embodiment of the present invention.

FIG. 2 is a partial longitudinal sectional view of a molding die when the mold is opened.

FIG. 3 is a partial longitudinal sectional view of a conventional molding die when the die is closed.

FIG. 4 is a partial longitudinal sectional view of the conventional molding die when the mold is opened.

FIG. 5 is a longitudinal sectional view of a door trim base material.

[Explanation of symbols]

 W Door trim base material W 'Molding material Wb Mounting base portion Wb' folded portion 1 Upper die 2 Lower die 3 Nesting member 4 Upper die cam driver 5 Lower die shift cam 6 Scrap removing pin 7 Scrap catch claw 9 Scrap

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location // B29K 103: 00 B29L 31:58

Claims (1)

(57) [Scope of request for utility model registration] In order to form a folded portion at an edge of a wood-based mat base material by an upper mold and a lower mold, a nesting member is provided on the side of the upper mold, the nest member being interlocked with the vertical movement of the same mold.
On the upper surface of the lower mold, via the upper cam driver provided on the upper mold, the upper mold moves up and down toward the nesting member in conjunction with the up and down movement of the same mold, and the folding back is performed in cooperation with the nesting member. In the forming die of the wood-based mat base having a lower mold approaching cam having a blade portion capable of cutting the scrap portion of the terminal of the folded portion, the front part of the lower mold approaching cam is formed. A scrap catch claw is provided to bite and hold the scrap portion when the lower mold approaching cam advances, and the lower mold approaching cam retreats when the mold is opened to move the scrap portion toward the upper mold side. A scrap processing structure in a molding die of a wood-based mat substrate which is taken out of the mold and remains on the lower mold side.