JP6343493B2 - Lattice manufacturing method - Google Patents

Description

  The present invention relates to a grid body manufacturing method used for manufacturing a grid body having a grid main body portion and a three-dimensional portion protruding in the expected direction by casting, and a grid body manufactured by the manufacturing method. .

  An example of this type of lattice is shown in FIG. The illustrated lattice body A includes a lattice body portion B that forms one surface and a three-dimensional portion C that protrudes in the expected direction. The lattice main body B has a configuration in which three vertical bars D1 to D3 arranged at equal intervals are connected by upper and lower horizontal bars E1 and E2. The three-dimensional part C is a ring arranged horizontally, and is provided at a plurality of locations having different heights between adjacent vertical bars D1 to D3.

  Conventionally, in order to manufacture the lattice body A as described above, for example, the lattice main body B and the solid portion C are separately manufactured by casting or the like, and the solid portion C is connected to the lattice main body B by means such as screwing. I was trying to do it.

  However, in the conventional lattice body as described above, the joints and screw heads between the lattice main body portion and the three-dimensional portion are exposed, and these portions are conspicuous, and are subject to secular changes such as gaps and rattling. Since it is likely to occur, an improvement for improving the appearance appearance has been demanded.

  The present invention has been made in view of the above-described conventional problems, and integrates a lattice main body portion and a three-dimensional portion protruding in the prospective direction to provide a lattice body having a seamless appearance. It is an object of the present invention to provide a method of manufacturing a lattice body that can be obtained, and a lattice body manufactured by the manufacturing method.

A method of manufacturing a lattice body according to the present invention includes a lattice body portion that stands vertically in a use state to form a single surface, and a three-dimensional portion that protrudes in a prospective direction from the lattice body portion in a use state and becomes a horizontal portion. In manufacturing the body, the method includes a step of forming a three-dimensional portion having a connection portion with the lattice main body portion, and a step of covering the three-dimensional portion with a nest with the connection portion exposed. And in the main mold having the casting space of the lattice main body part, the method for manufacturing the lattice body includes the step of placing the insert and the three-dimensional part in the state where the connection part is inserted into the casting space, and the casting space of the main mold. A structure comprising a step of forming a lattice main body portion by filling and solidifying a molten metal, joining the lattice main body portion and the three-dimensional portion, and a step of taking out the lattice body composed of the lattice main body portion and the three-dimensional portion from the main mold. The above configuration is used as a means for solving the conventional problems. In addition, it is desirable that the insert and the main mold in the above configuration are sand molds obtained by mixing mold sand and binder.

  In addition, a lattice body according to the present invention is manufactured by the above-described method for manufacturing a lattice body, and is characterized in that a lattice main body portion and a three-dimensional portion protruding in the prospective direction are integrated.

According to the method for manufacturing a lattice body according to the present invention, the lattice body portion and the three-dimensional portion protruding in the prospective direction are integrated, and a lattice body having a seamless appearance can be obtained. Further, according to the above-described manufacturing method, it is possible to make uniform the thickness of the solid portion, Ru can manufacture high-quality grid of using primary mold having a simple structure.

  For example, when the whole is cast at a time, the three-dimensional part protrudes from the lattice main body part, and therefore it is necessary to provide a draft in the formation part of the three-dimensional part in the model for mold production. If a mold is produced using such a model and casting is performed using the mold, the three-dimensional portion has a draft. On the other hand, in the manufacturing method of the present invention, since the three-dimensional part is formed in advance and the lattice main body part is cast with the main mold in a state where the three-dimensional part is covered with the insert, there is no draft and the thickness is uniform. A three-dimensional part can be obtained.

  The lattice body according to the present invention has a lattice body portion and a three-dimensional portion protruding in the expected direction so that a good appearance without a seam can be obtained and has a three-dimensional portion with a uniform thickness. It becomes.

It is the top view (A), front view (B), and side view (C) explaining one embodiment of the lattice body manufactured by the manufacturing method of the lattice body concerning this invention. It is sectional drawing of the part of the three-dimensional part in the lattice body shown in FIG. It is a perspective view explaining the formation process of the solid part in the manufacturing method of a lattice body. FIG. 4 is a perspective view illustrating the nesting following FIG. 3. FIG. 5 is a perspective view for explaining a step of covering the three-dimensional part with an insert following FIG. 4. FIG. 6 is a perspective view for explaining formation of a main mold using a model following FIG. 5. FIG. 7 is a perspective view for explaining the arrangement of the nesting and the three-dimensional part following FIG. 6. FIG. 8 is a perspective view illustrating a lattice body after casting following FIG. 7. FIG. 9 is a perspective view for explaining the finished lattice after FIG. 8. It is the top view (A) and front view (B) explaining other embodiment of the lattice body concerning this invention. It is explanatory drawing (A)-(D) of the plane and front which explain other four examples of the three-dimensional part in the lattice body concerning this invention. It is each front view (A)-(C) explaining the other three examples of the lattice body concerning this invention.

  Hereinafter, based on drawings, one embodiment of a manufacturing method of a lattice object concerning the present invention and a lattice object manufactured by the manufacturing method is described.

  As described above, the lattice body A shown in FIG. 1 has a lattice body portion B that forms one surface and a three-dimensional portion C that protrudes in the expected direction. The lattice main body B has a configuration in which three vertical bars D1 to D3 arranged at equal intervals are connected by upper and lower horizontal bars E1 and E2. The three-dimensional part C is a ring arranged horizontally, and is provided at a plurality of locations having different heights between adjacent vertical bars D1 to D3. As shown by the phantom lines in the figure, the grid A is connected to the lower ends of the vertical bars D1 to D3, and stands up by the board F. As shown by the dotted lines in the figure, the three-dimensional part C can be used alone as a stand for holding the flowerpot G or the like.

  The manufacturing method of the lattice body A includes a step of forming a three-dimensional portion C having a connection portion Ca with a lattice main body portion B, a step of covering the three-dimensional portion C with the nest 1 with the connection portion Ca exposed. The main mold 3 having the casting space 2 of the lattice main body B includes a step of placing the insert 1 and the three-dimensional portion C in a state where the connection portion Ca is inserted into the casting space 2. The manufacturing method also includes a step of forming the lattice main body portion B by filling the casting space 2 of the main mold 3 with a molten metal and solidifying it, and joining the lattice main body portion B and the three-dimensional portion C; A step of taking out the lattice body A composed of the three-dimensional part C from the main mold 3.

  In the method for manufacturing a lattice body according to the present invention, the three-dimensional part C can be formed by casting. Therefore, in order to distinguish between a three-dimensional part mold and a mold for forming the entire lattice body A, What has the casting space 2 of the lattice body B is the main mold 3.

  That is, in the method of manufacturing the lattice body A, as shown in FIG. 3, a ring-shaped three-dimensional portion C having a connection portion Ca with the lattice main body portion B is formed. The three-dimensional part C integrally has connection parts Ca and Ca with the lattice body part B at positions different from the outer peripheral part by 180 degrees. The three-dimensional part C in the illustrated example is formed by casting using the three-dimensional part mold 4. The three-dimensional part mold 4 is a sand mold produced using a model for producing a three-dimensional part, and is divided into an upper mold 4A and a lower mold 4B to form a ring-shaped casting space 5 horizontally. Therefore, the three-dimensional part C cast by the mold 4 has a uniform thickness with no draft.

  Next, in the manufacturing method of the lattice A, the insert 1 of the three-dimensional part C is formed as shown in FIG. The nest 1 is produced using a mold sand and a model for producing the nest, and has a flat circular container shape composed of a pair of divided nests 1A and 1B. The insert 1 has a volume for accommodating the three-dimensional portion C, and has concave portions 1D and 1D that form openings 1C between both sides of the split inserts 1A and 1B. Moreover, two convex parts 1E and 1E used for positioning at the time of casting described later are provided on both surfaces (only the upper surface is shown) of the insert 1.

  The above described insert 1 accommodates the three-dimensional portion C between the two split inserts 1A and 1B. As shown in FIG. 5, both the recesses 1D and 1D are closed in a state where both the split inserts 1A and 1B are closed. The solid portion C is covered with the connecting portion Ca on both sides exposed from the opening portion 1C formed in step S1. The both sides of this insert 1 are inclined surfaces with the center line in the arrangement direction of the convex portions 1E and 1E as the apex side.

  Next, as shown in FIGS. 6 and 7, the manufacturing method of the lattice body A produces the main mold 3 having the casting space 2 of the lattice main body B. The main mold 3 is a sand mold produced using a model 6 for producing a lattice shown in FIG. 6, and is divided into an upper mold 3A and a lower mold 3B. The model 6 for producing the lattice body corresponds to one half of the prospective direction of the lattice main body part B and each nest 1, and as its inverted shape, a groove-like space 2A corresponding to one half of the lattice main body part B, and each An upper mold 3A and a lower mold 3B having a semicircular mounting hole 2B corresponding to one half of the insert 1 are produced.

  Here, a positioning recess 2C corresponding to the protrusion 1E of the insert 1 described above is formed in the mounting hole 2B. Note that the model 6 does not necessarily correspond to one half of the lattice main body B, but differs depending on the position of the split surface of the main mold 3 (the split surface of the upper mold 3A and the lower mold 3B).

  Next, as shown in FIG. 7, in the lower mold 3B of the main mold 3, the lattice body A is manufactured by fitting the inserts 1 into the mounting holes 2B. The insert 1 is positioned by fitting the part 1E and the recess 2C of the mounting hole 2B. Further, as described above, since the insert 1 is an inclined surface with the center line in the arrangement direction of the convex portions 1E and 1E as the top side, as described above, it fits like a wedge in the mounting hole 2B. In combination, the familiarity with the lower mold 3B is good. Thereby, the insert 1 is substantially integrated with the lower mold 3B. When the insert 1 is arranged in the lower mold 3 in this way, the connection portion Ca exposed from the insert 1 is positioned in the groove-shaped space 2A of the lower mold 3B.

  Next, the manufacturing method of the grid A closes the upper mold 3A and the lower mold 3B of the main mold 3 shown in FIG. As a result, the groove-like spaces 2A of the upper and lower molds 3A, 3A are combined to form a casting space 2 of the lattice main body B, and each insert 1 is integrated with the main mold 3 so that the three-dimensional portion C is formed in the casting space 2. The connection portion Ca enters.

 And the manufacturing method of the grid body A goes through a series of casting processes in which the casting space 2 of the main mold 3 is filled with molten metal, and this is cooled and solidified. Accordingly, the lattice main body B is formed, and the lattice main body B and the three-dimensional portion C are joined in a state where the connection portions Ca of the three-dimensional portions C are cast into the lattice main body B. At this time, in the three-dimensional part C, a part of the connection part Ca is melted by the heat of the molten metal and is integrated with the lattice body part B. In addition, the material of the grid A in the manufacturing method according to the present invention is not particularly limited as long as at least the grid main body B can be cast, and is, for example, aluminum or an alloy thereof. Moreover, it is desirable that the lattice main body part B and the three-dimensional part C are made of the same material.

  Next, in the manufacturing method of the lattice body A, the lattice body A composed of the lattice main body portion B and the three-dimensional portion C is taken out from the main mold 3 as shown in FIG. At this time, the lattice body A is still attached with the nesting 1, the non-product part P formed by the gate and the runner. Thereafter, by removing the insert 1 and the non-product part P, a lattice body A having a lattice main body part B and a three-dimensional part C is obtained as shown in FIG.

  According to the manufacturing method of the grid A described in the above embodiment, the grid main body B and the three-dimensional part C projecting in the prospective direction are integrated to obtain a grid A having a seamless appearance. Can do.

  In the manufacturing method of the lattice body A and the lattice body A manufactured thereby, the thickness T of the three-dimensional part C can be made uniform as shown in FIG. This is because, for example, when the whole is cast at a time, the three-dimensional part C protrudes from the lattice main body part B. Therefore, it is necessary to provide a draft at the formation part of the three-dimensional part C in the model for mold production. is there. If a mold is produced using such a model, and casting is performed using the mold, the three-dimensional part C has a draft angle θ as indicated by a virtual line in FIG. In such a lattice A, if a flower pot G or the like is placed on the three-dimensional part C as shown in FIG. 1 (B), it will naturally rattle and cannot be stably held.

  On the other hand, in the manufacturing method of the present invention, since the three-dimensional part C is formed in advance and the three-dimensional part C is covered with the insert 1 and the lattice main body part B is cast by the main mold 3, the draft angle θ The solid portion C having a uniform thickness T and horizontal top and bottom surfaces is obtained. Thereby, in the lattice body A according to the present invention, the flower pot G and the like can be stably held by the three-dimensional portion C.

  Further, in the manufacturing method of the present invention, it is possible to manufacture a high-quality grid A without casting defects using a relatively simple main mold 3. The main mold 3 shown in FIG. 7 is for placing the insert 1, but is a mold having a casting space corresponding to the entire lattice body without using the three-dimensional part C and the insert 1 formed in advance. If casting is attempted, gas may remain in the upper half of the space for forming the three-dimensional part when the molten metal is filled. For this reason, the mold requires a structure for exhausting gas and a forced exhaust means.

  On the other hand, in the manufacturing method of the present invention, since the three-dimensional part C and the nest 1 formed in advance are used, the main mold 3 has a groove-like space 2A corresponding to the lattice main body B and each nest 1 Any structure may be used as long as it has a corresponding mounting hole 2B, and gas does not easily remain when the molten metal is filled, so that an exhaust structure and means are unnecessary. Thus, in the manufacturing method of the present invention, a high-quality grid A can be manufactured using the main mold 3 having a simple structure.

  The structure of the method for manufacturing a lattice body and the lattice body according to the present invention are not limited to the above-described embodiment, and the structure can be appropriately changed without departing from the gist of the present invention. For example, the lattice main body portion of the lattice body can be selectively combined with vertical and horizontal crosspieces or diagonal crosspieces, or the intervals can be appropriately changed. The three-dimensional part of the lattice body is not limited to a circular ring, but may be a polygonal ring or plate, one that does not connect the bars of the lattice body part, or one that protrudes only to one side of the expected direction of the lattice body part But it ’s okay.

  That is, the lattice body can be freely selected in the shape, size, number, arrangement, etc. of the details in the lattice main body part and the three-dimensional part, and other than those that can be used alone as shown in FIG. It may be incorporated into a building frame or other structure. Moreover, in the said embodiment, although the case where the solid part was manufactured by casting was illustrated, in the manufacturing method of the lattice body concerning this invention, the solid part which has a connection part by methods other than casting is manufactured, and this solid part is manufactured. It is also possible to complete the lattice body by integrating it with the lattice main body by a subsequent casting process.

10-12 is a figure explaining other embodiment of a lattice body and the solid part which comprises a lattice body.
In the grid body A1 shown in FIG. 10, the grid body B1 has a configuration in which six vertical bars D1 to D6 arranged at predetermined intervals are connected by upper and lower horizontal bars E1 and E2. Each vertical beam D1-D6 is arrange | positioned at arbitrary intervals. And between each vertical beam D1-D6, the ring-shaped solid part C1-C3 is integrated in the position from which height differs. The solid portions C1 to C3 have different diameters corresponding to the intervals between the vertical bars D1 to D6. Note that the lattice A1 shown in the figure does not have to be all the solid portions C1 to C3 provided between the vertical crosspieces D1 to D6, and may have a configuration in which an intermediate cross in place of the solid portion is selectively disposed. .

  The three-dimensional part C4 shown in FIG. 11A is a rectangular flat plate, and is arranged so that the diagonal line thereof coincides with the horizontal rail E1. The three-dimensional part C5 shown in FIG. 11B has a circular dish shape. Of course, it may be a dish other than a circle. The three-dimensional part C6 shown in FIG. 11C is a rectangular flat plate, and is arranged so that a pair of sides and the crosspiece E1 are parallel to each other. A three-dimensional part C7 shown in FIG. 11D is a circular flat plate.

  In the grid body A2 shown in FIG. 12A, the grid body B2 connects the left and right vertical bars D1 and D2 with the upper and lower horizontal bars E1 and E2, and a plurality of inclined bars H on the inner side of the frame. It is the arranged configuration. A plurality of three-dimensional parts C8 are integrated between the inclined bars H. The inclined bars H may be arranged at regular intervals as shown in the figure, or may be arranged at arbitrary intervals, or three-dimensional parts having different sizes and shapes may be arranged.

  In the lattice body A3 shown in FIG. 12B, the lattice main body B3 connects the left and right vertical beams D1 and D2 with the upper and lower horizontal beams E1 and E2, and appropriately bends the middle inside the frame. It is the structure which has arrange | positioned the vertical beam D7-D10. A three-dimensional part C9 is integrated between the vertical bars D7 to D10. The three-dimensional part C9 has a different size according to the interval between the adjacent vertical bars D7 to D10.

  A grid body A4 shown in FIG. 12C is installed on an inclined place or an inclined portion of a building. In the lattice body A4, the lattice main body B4 connects the left and right vertical beams D1 and D2 with the inclined upper and lower horizontal beams E1 and E2, and a plurality of vertical beams D3 to D6 are arbitrarily connected to the inside of the frame. It is a structure arranged at intervals. A plurality of three-dimensional parts C10 having a size corresponding to the interval are integrated between the vertical bars D1 to D6.

  Thus, there are various variations in the lattice. In addition, also in each of the grid bodies A2 to A4 shown in FIGS. 12A to 12C, all of the ones provided between the vertical bars D1 to D6 and the inclined bars H are the same as the grid body A1 shown in FIG. There is no need for the three-dimensional parts C8 to C10, and an intermediate cross in place of the three-dimensional part may be selectively disposed. In addition, in the method for manufacturing a lattice body according to the present invention, the nesting is made common to three-dimensional parts in various forms, and the same main mold as the common nesting is used, so that the selectivity of the three-dimensional part with respect to the lattice body part is achieved. Can be further increased.

A lattice body A1 to A4 lattice body B lattice body portion B1 to B4 lattice body portion C solid portion C1 to C10 solid portion Ca connection portion 1 nesting 2 casting space 3 main mold

Claims (1)

When manufacturing a lattice body having a lattice body portion that stands vertically in a use state and forms one surface, and a solid portion that protrudes in a prospective direction from the lattice body portion in a use state and becomes horizontal ,
Forming a three-dimensional portion having a connection portion with the lattice body portion;
A step of covering the three-dimensional part with a nest with the connection part exposed;
In the main mold having the casting space of the lattice body part, the step of arranging the insert and the three-dimensional part in the state where the connection part is inserted into the casting space,
Forming a lattice body by filling the casting space of the main mold with a molten metal and solidifying it, and joining the lattice body and the three-dimensional portion;
And a step of taking out from the main mold a lattice body comprising a lattice main body portion and a three-dimensional portion.

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