JPH07115117B2 - Model modeling equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a model modeling apparatus.

2. Description of the Related Art Conventionally, an apparatus for forming a disappearing model used in a disappearing model casting method is, for example, as shown in FIG. It was swingably connected. Then, the space formed in the state where the upper mold 31 and the lower mold 32 are overlapped is filled with foam beads or the like to form a model 34 for casting, and the upper mold 31 is hinged.
The model 34 was taken out with the upper mold 31 and the lower mold 32 separated by swinging around 33 as a fulcrum.

However, according to the above-described conventional configuration, when the external shape has a draft such as a deformed pipe or the like, it is possible to release the model 34 without damaging the model 34. However, as shown in FIG. 8, when modeling a model 34 with a large draft, the opening edge 36 of the female mold 35 formed on the upper mold 31 when the upper mold 31 is released is a model. There was a problem that the model 34 was damaged by contacting the 34.

The present invention solves the above problems, and an object of the present invention is to provide a model modeling apparatus capable of releasing a model without damaging the model even when modeling a model having a small draft.

Means for Solving the Problems In order to solve the above problems, the present invention provides an upper mold and a lower mold which are arranged one above the other and in which recesses forming a space for modeling are formed in mutual contact surfaces. A guide that prevents lateral displacement between the mold and the lower mold, a drive arm that is pivotally supported in a vertical direction on a fixed base, a drive means that swings the drive arm, and an upper mold that is fixed at its upper end. A support arm that is provided and has its lower end swingably supported in a long hole formed in the drive arm;
An urging means interposed between the drive arm and the support arm for urging the support arm in a direction opposite to the upward swing direction of the drive arm, and an urging force of the urging means fixed to the drive arm. A first stopper against which a support arm is formed,
A second member, which is fixed to the drive arm and locks the support arm, is located on the side facing the first stopper through the support arm.
It is configured to include a stopper.

Operation With the above-described configuration, the modeling space is filled with a modeling material such as foam beads in a state where the upper mold and the lower mold are overlapped with each other to mold a model. When the upper and lower molds are separated from the lower mold to separate the model from the upper and lower molds, the drive arm is swung upward by the drive means, and the support arm pivotally supported by the drive arm is used. Lift the upper mold. At this time, the fulcrum of the drive arm with respect to the lower end of the support arm moves within the elongated hole formed in the drive arm, and the guide prevents lateral displacement of the upper mold, so that the support arm is held in the vertical state while maintaining the upper mold. Lift vertically. Further, the first stopper approaches the support arm as the drive arm swings, and when the upper die rises by an appropriate distance and the horizontal regulation by the guide disappears, the first stopper receives the urging force of the urging means to drive it. A support arm that is biased in a direction opposite to the swinging direction of the arm is locked. Thereafter, the support arm and the drive arm swing together to lift the upper die upward, and when the support arm tilts at an appropriate angle with respect to the vertical direction, the upper die and the upper die are resisted against the urging force of the urging means. The support arm tilts in the swinging direction of the drive arm with the lower end of the support arm as a fulcrum by its own weight, and the second stopper locks the support arm.
In this state, the upper mold moves to a position away from the upper region of the lower mold as the drive arm swings.

Therefore, since the upper die rises in the vertical direction by an appropriate distance and then comes out of the upper region of the lower die, the model formed when the upper die is separated is not damaged.

Embodiment One embodiment of the present invention will be described below with reference to the drawings. First
1 and 2, a lower die 3 is fixedly supported on a fixed base 1 via a pedestal 2, and an upper die 4 is placed on the lower die 3.
Are placed one on top of the other. And upper mold 4
Further, the lower mold 3 is provided with a concave portion 5 forming a molding space on the contact surfaces thereof. Further, flanges 6 and 7 are formed on the peripheral portions of the upper mold 4 and the lower mold 3, respectively. The flange 6 of the upper mold 4 is slidably contacted with the flange 7 of the lower mold 3 to form the upper mold 4 and the lower mold 3. A plurality of guide plates 8 for preventing the lateral displacement of 3 are provided at appropriate positions.

And, an elevator pedestal 9 is arranged below the lower mold 3,
The lift pedestal 9 is supported by the lower mold 3 via a plurality of clamping ram cylinders 10. In addition, a clamp claw 11 for locking the upper die 4 is rotatable at an appropriate position on the lifting pedestal 9 between a position where it engages with an engaging portion 12 provided on the upper die 4 and a position where it engages and disengages. Is supported by.

A drive arm 13 is pivotally supported on the fixed base 1 in a vertically swingable manner, and a drive ram cylinder 14 for swinging the drive arm 13 is connected to one end of the drive arm 13. In addition, a support arm 15 is vertically installed with the upper die 4 fixed at the upper end, and the lower end of the support arm 15 is provided at the drive arm 13
The shaft 16 is swingably supported by the elongated hole 16 formed in. Furthermore, between the drive arm 13 and the support arm 15, the support arm
A spring 17 for urging the drive arm 13 in a direction opposite to the upward swing direction of the drive arm 13 is interposed, and the spring 17 is attached to an appropriate position of the swing base 18 integrally provided with the drive arm 13. A first stopper 19 that locks the support arm 15 against the force and a second stopper 20 that is located on the side facing the first stopper 19 via the support arm 15 are provided.

The operation of the above configuration will be described below. Lower mold 3
By engaging the clamp claw 11 with the engaging portion 12 of the upper mold 4 and extending the clamp ram cylinder 10 in a state where the upper mold 4 is overlaid on the upper mold 4, the clamp claw 11 is moved downward through the lift pedestal 9. Then, the upper mold 4 is pressed against the lower mold 3. In this state,
A model 21 is molded by filling a molding material such as foam beads into the concave portion 5 forming a molding space.

Then, the model 21 in which the upper mold 4 is separated from the lower mold 3
When the mold is released from the upper and lower molds 4 and 3, the clamp ram cylinder 10 is contracted to be separated from the clamp claw 11 and the engaging portion 12. In this state, that is, in the state shown in FIG. 3, the drive ram cylinder 14 is extended and the other end of the drive arm 13 is swung upward to support the support arm pivotally supported by the drive arm 13.
Lift the upper mold 4 through 15. At this time, the drive arm
The fulcrum of the drive arm 13 with respect to the lower end of the support arm 15 moves in the elongated hole 16 formed in the guide plate 8 and
Prevents the upper die 4 from slipping sideways, so that the support arm 15
Lifts the upper die 4 in the vertical direction while maintaining the vertical state.

Then, as shown in FIG. 4, the first stopper 19 approaches the support arm 15 as the drive arm 13 swings, the upper die 4 rises a proper distance, and the guide plate 8 restricts the horizontal direction. When it disappears, the support arm 15 that is biased by the biasing force of the spring 17 in the direction opposite to the swinging direction of the drive arm 13 is locked.

After that, as shown in FIG. 5, the support arm 15 and the drive arm
When the support arm 15 tilts at an appropriate angle with respect to the vertical direction by swinging together 13 to lift the upper mold 4, the upper mold 4 and the support arm 15 are resisted against the biasing force of the spring 17.
Is tilted in the swinging direction of the drive arm 13 by its own weight with the lower end of the support arm 15 as a fulcrum, and the second stopper 20 locks the support arm 15. Then, as shown in FIG. 6, in this state, the upper die 4 moves to a position away from the lower region of the lower die 3 as the drive arm 13 swings.

Therefore, since the upper die 4 rises in the vertical direction by an appropriate distance and then comes out of the upper region of the lower die 3, when the upper die 4 is separated,
It is possible to prevent damage to the model 21 formed.

As described above, according to the present invention, after the upper die is lifted in the vertical direction by an appropriate distance while the support arm is kept in the vertical state, the upper die moves above the lower die as the drive arm swings. Since it moves to a position out of the area, the model can be damaged when the upper mold is separated.

[Brief description of drawings]

FIG. 1 is an overall front view of a model modeling apparatus showing an embodiment of the present invention, FIG. 2 is an overall side view of the model modeling apparatus in the same embodiment, and FIGS. FIG. 7 is an operation state diagram showing the mold separating operation, FIG. 7 is an overall front view showing the conventional model forming apparatus, and FIG. 8 is an operation state diagram showing the separating operation of the conventional model forming apparatus. 1 ... Fixed base, 3 ... lower mold, 4 ... upper mold, 8 ... guide plate, 13 ... driving arm, 14 ... driving ram cylinder, 15 ... supporting arm, 16 ... oblong hole, 17 …… Spring, 19 …… First stopper, 20 …… Second stopper, 21
……model.

Claims (1)

[Claims] 1. An upper die and a lower die, which are vertically overlapped with each other and in which mutual contact surfaces are provided with recesses forming a molding space, and a guide for preventing lateral displacement of the upper die and the lower die, and fixed. A drive arm pivotally supported in the up-down direction on a base, a drive means for swing-driving the drive arm, and a long hole vertically provided with one end fixed to an upper die and having a lower end formed in the drive arm. A support arm pivotally supported on the drive arm; a biasing means interposed between the drive arm and the support arm to bias the support arm in a direction opposite to the upward swing direction of the drive arm; A first stopper fixed to the drive arm to lock the support arm against the urging force of the urging means, and fixed to the drive arm on the side facing the first stopper via the support arm. And a second stopper for locking the support arm. Type molding apparatus.