TWI706818B - How to make the box - Google Patents

Abstract

The present invention provides a method for manufacturing a box body that maintains a vertical relationship between adjacent surfaces. The manufacturing method of the box of the present invention includes: a first part forming step, which corresponds to the first part having two plate portions connected so that the angle formed by the main surface becomes 90 degrees, and has a first mold and In the second mold, the molten liquid is injected into the cavity of the first mold, and only one of the first mold and the second mold is used to form two main surfaces of the two plates, thereby forming the first part ; And the second part forming step, which corresponds to the second part having two plate portions connected in such a way that the angle formed by the main surface becomes 90 degrees and corresponds to the second mold having the third mold and the fourth mold Melt is injected into the inner cavity, and only one of the third mold and the fourth mold is used to form two main surfaces of the two plate parts, thereby forming the second part.

Description

How to make the box

The present invention relates to a method for making a box by die casting.

Conventionally, when manufacturing a box containing a control board, there is a case of manufacturing the box by die casting. Patent Document 1 discloses that a box housing a control board is manufactured by die casting. In Patent Document 1, a box is manufactured by die casting using aluminum. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2001-357925

[The problem to be solved by the invention]

In Patent Document 1, a plurality of parts configured in a U-shape are manufactured by die-casting, and the manufactured U-shaped parts are assembled to manufacture a box.

When manufacturing parts by die casting, a step of separating the parts manufactured by die casting from the mold is required. Generally, when a part is manufactured by die casting, a draft angle must be formed on the part in a way that can be detached from the mold. Therefore, the parts must be formed with a tapered shape.

However, if the part is formed into a tapered shape in order to be separated from the mold, there is a possibility that the adjacent side surfaces of the box body cannot maintain a vertical relationship with each other. Especially, when the part has 3 faces and the shape is formed by these 3 faces, there is a case between the 3 faces of the part, and the adjacent faces cannot maintain crossing at right angles. The possibility of the relationship. Therefore, as a result of assembling and manufacturing the box body, there is a possibility that adjacent surfaces cannot maintain the relationship of crossing each other at right angles.

Regarding the box containing the control board, depending on the situation, not only the wider surface is grounded and arranged, but also the arrangement space is considered, and the posture is changed to ground the narrower surface and arranged in a standing state. In this case, when the adjacent sides of the box cannot maintain a vertical relationship with each other, consider arranging the box in an inclined state. If the box body is inclined and arranged, the box body may fall over during the installation, and the impact at this time may cause the box body to malfunction.

In addition, since the parts are formed into a tapered shape in order to be separated from the mold, the result of assembling the box body by the parts taken out from the mold is that the inner surfaces of the box body are not parallel to each other and are inside the box body. Part of the space is narrowed. In this case, there is a possibility that the space inside the box becomes narrow, which may result in a reduction in the capacity that can be stored in the box.

Therefore, the present invention is in view of the above situation, and its purpose is to provide a method for manufacturing a box that maintains a vertical relationship between adjacent surfaces. [Technical means to solve the problem]

The manufacturing method of the box of the present invention is characterized by including: a first part forming step, which corresponds to the first part having two plate parts connected so that the angle formed by the main surface becomes 90 degrees, and has the first part Melt is injected into the cavity of the first mold of the first mold and the second mold, and only one of the first mold and the second mold is used to form two of the main surfaces of the two plate portions , Thereby forming the above-mentioned first part; the second part forming step, which corresponds to the second part having two plate portions connected so that the angle formed by the main surface becomes 90 degrees, corresponding to the third mold and the second part Melt is injected into the cavity of the second mold of the 4 molds, and only one of the third mold and the fourth mold is used to form two of the main surfaces of the two plate portions, thereby forming The second part; the box forming member assembling step by assembling the first part obtained in the first part forming step and the second part obtained in the second part forming step, A box forming member having three plate portions is formed; and a box forming step of forming a box using the box forming member obtained in the box forming member assembling step.

In the method of manufacturing the box structured above, the first part having two plate portions connected so that the angle formed by the main surface becomes 90 degrees corresponds to the first part having the first mold and the second mold. Melt is injected into the cavity of the mold, and only one of the first mold and the second mold is used to form two main surfaces of the two plate parts, thereby forming the first part. The first part forming step The first part is formed in the middle, corresponding to the second part having two plate parts connected so that the angle formed by the main surface becomes 90 degrees, and the mold inside the second mold having the third mold and the fourth mold Melt is injected into the cavity, and only one of the third and fourth molds is used to form two main surfaces of the two plate parts, thereby forming the second part in the second part forming step. Therefore, it is possible to separately form the first part and the second part having two plate parts connected so that the angle formed by the main surface becomes 90 degrees. Therefore, the box system formed by using these parts is formed so that the angle formed by the main surface among adjacent surfaces becomes 90 degrees.

In addition, in the first part forming step and the second part forming step, each cavity may be formed in each of the first mold and the second mold, and the main surfaces of the two plate portions intersect each other. It is formed in such a way that the line of intersection becomes the lowermost position.

Since the first mold and the second mold are formed in such a way that the line of intersection formed by the main surfaces of the two plate portions crosses each other and becomes the lowermost position, the first part and the second part can be smoothed Release of the first mold and the second mold.

In addition, in the first part forming step and the second part forming step, the cavities may be opposed to each of the first mold and the second mold in a direction in which a plate portion extends from the line of intersection The above-mentioned first part and second part are installed in an inclined posture on the horizontal plane.

Since inside the first mold and the second mold, the first part and the second part are formed in a posture in which the direction in which the line of intersection formed by one plate part crosses each other from the outer sides of the two plate parts is inclined with respect to the horizontal plane, Therefore, the detachment of the first part and the second part from the first mold and the second mold can be performed more smoothly.

In addition, the above-mentioned melt can be formed by melting aluminum.

Since the molten aluminum is formed by melting aluminum, the manufactured box system is formed of aluminum. Since the box body is formed of aluminum, the heat generated inside the box body can be efficiently dissipated to the outside.

Furthermore, the above-mentioned box may be a box for a controller that houses a control board.

Since the box is a box for a controller that houses a control board, the box for a controller can be formed between adjacent outer surfaces such that the outer surfaces are at right angles to each other.

Furthermore, the above-mentioned control board may be a control board for controlling a robot.

Since the box system contains the controller for controlling the control board of the robot, in the box for the controller that contains the control board for controlling the robot, the adjacent outer surfaces can be formed between the adjacent outer surfaces. Formed by a right angle.

In addition, the method of manufacturing the box of the present invention is characterized by comprising: a third part forming step corresponding to the third part having two plate parts connected so that the angle formed by the main surface becomes 90 degrees Melt is injected into the cavity of the third mold with the fifth mold and the sixth mold, and only one of the fifth mold and the sixth mold is used to form two of the two plate parts. The main surface, thereby forming the third part; the box forming member assembling step, which uses two of the third parts obtained in the third part forming step and assembling the two third parts, thereby forming A box forming member having three plate parts; and a box forming step of forming a box using the box forming member obtained in the box forming member assembling step.

In the method of manufacturing the box structured above, the third part having the two plate portions connected so that the angle formed by the main surface becomes 90 degrees corresponds to the third part having the fifth and sixth molds. Melt is injected into the cavity of the mold, and only one of the fifth and sixth molds is used to form the two main surfaces of the two plates, thereby forming the third part. The third part forming step The third part is formed in the middle, and the two third parts are used and the two third parts are assembled to form a box forming member with three plate parts. Therefore, the angle formed by the main surface can be 90 The two third parts of the two plates connected by a degree method. Therefore, the box system formed by using the two third parts is formed so that the angle formed by the main surface among adjacent surfaces becomes 90 degrees. [Effects of Invention]

According to the present invention, since the box is formed so that the angle formed by the main surface among adjacent surfaces becomes 90 degrees, it is possible to provide a box that can be arranged in a stable state even if the grounded surface is changed.

Hereinafter, with reference to the accompanying drawings, the manufacturing method of the box of the embodiment of the present invention will be described.

Fig. 1 shows a perspective view of a box 100 produced by the method of producing a box according to an embodiment of the present invention.

In this embodiment, the box body 100 has a rectangular parallelepiped shape. Therefore, the adjacent surfaces of the box 100 are formed by crossing each other at right angles. The box 100 contains the control board of the robot inside, and is configured as a box of the robot controller that controls the robot.

FIG. 2 shows a configuration diagram of a case where the box 100 of this embodiment is used as the box of the robot controller that controls the robot 60.

As shown in FIG. 2, the box 100 of this embodiment houses a control board 80 for controlling the actions of the robot 60 inside. Therefore, the box 100 functions as a box for a controller that houses the control board 80. In this embodiment, the robot 60 is used as a multi-axis industrial robot.

In addition, in this embodiment, the form in which the robot controlled by the control board housed in the box is an industrial robot has been described, but the present invention is not limited to the above-mentioned embodiment. The robot controlled by the control board contained in the box can also be other types of robots. The robot can be in any form as long as it is controlled by the control board inside the box. Moreover, the control board contained in the box may not be used to control the robot. Inside the box, it can also contain a control board for controlling other than the robot. Moreover, what is contained in the box may not be a control board. The present invention can also be applied to a box for accommodating other than the control board.

In this embodiment, the box body 100 is formed of aluminum. When the box 100 is used as a robot controller, a large amount of heat is generated from the control board 80 during the operation of the robot 60. Therefore, the box body 100 is formed of aluminum with high heat dissipation.

In addition, in the present embodiment, the box body 100 having the shape of a rectangular parallelepiped is formed by using the box body forming member 10 whose cross section is formed in a U-shape.

FIG. 3 shows a perspective view of two box body forming members 10 constituting the box body 100. The box body forming member 10 has a surface located in the lower part of the box body 100 and grounded.

The box forming member 10 is vertically connected by three plate-shaped parts, so that the cross section is formed in a U-shape. In addition, the box-forming member 10 having a U-shaped cross section is formed by assembling two L-shaped parts.

FIG. 4 shows a perspective view of the box forming member 10 in a state where the box forming member 10 is divided into two parts (first part, second part) 11 and 12.

The parts 11 and 12 are respectively connected so that the angle formed by the main surfaces of the two plate-shaped parts becomes 90 degrees, so that the cross-section is formed in an L shape. In the present embodiment, the component 11 is connected so that the angle formed by the main surfaces of the two plate portions 11a and 11b becomes 90 degrees, so that the cross section is formed in an L-shape. That is, the two plate portions 11a and 11b are connected so that the angle formed by the main surface becomes 90 degrees. In this embodiment, the main surface of the two plate portions 11a and 11b is the surface on the outer side of the plate portions 11a and 11b. Similarly, the parts 12 are connected so that the angle formed by the main surfaces of the two plate portions 12a and 12b becomes 90 degrees, so that the cross section is formed into an L-shape. That is, the two plate portions 12a and 12b are connected so that the angle formed by the main surfaces becomes 90 degrees. In this embodiment, the main surface of the two plate portions 12a, 12b is the surface on the outer side of the plate portions 12a, 12b.

Next, the manufacturing method of the box 100 will be described.

In the present embodiment, a part 30 constituting a part of the box forming member 10 and having an L-shaped cross section is formed by die casting. The component 30 is configured to have an L-shaped cross section by two orthogonal plate portions 30a and 30b.

FIG. 5 shows a cross-sectional view of the mold 50 and the part 30 when the part 30 is formed by die casting.

The mold (first mold) 50 has an upper mold (first mold) 51 and a lower mold (second mold) 52. The upper mold 51 and the lower mold 52 are configured to be relatively close and distant.

Between the upper mold 51 and the lower mold 52, a cavity 53 corresponding to the shape of the part 30 is formed. The cavity 53 is used to form the part 30 formed by two orthogonal plate parts 30a and 30b by die casting. When the part 30 is made, the molten aluminum is pressed into the cavity 53. Thereafter, the melt is cooled inside the cavity 53 so that the melt is solidified, thereby forming the part 30. Therefore, as a result, a part 30 having a shape along the shape of the mold cavity 53 and formed of aluminum is formed.

The cavity 53 is formed in the mold 50 corresponding to the component 30, and has cavities 53a and 53b for plate parts corresponding to the two orthogonal plate parts 30a and 30b. The cavity 53 is formed in such a way that the intersection line 1 formed by the main surfaces of the two plate portions 30a and 30b intersecting each other is arranged at the lowermost position in the mold 50. That is, the cavity 53 is formed so that the position corresponding to the line of intersection 1 formed by intersecting two plate parts is located at the lowermost side in the mold 50. In addition, a cavity 53 is formed in such a manner that the part 30 is formed in a posture inclined with respect to the horizontal plane in a direction in which a plate portion 30b extends from the intersection line 1. Therefore, in the cavity 53, the position corresponding to the intersection line 1 formed by the two plate portions 30a and 30b intersecting each other is located at the lowermost position. In addition, in the cavity 53, the direction in which the plate portion 30b extends from the intersection line 1 is formed to be inclined with respect to the horizontal plane.

Therefore, in the present embodiment, among the two plate portions 30a and 30b formed as the component 30, the extending direction of the plate portion 30b located on the lower side in the mold 50 is inclined with respect to the horizontal plane to form the component 30. In this embodiment, the part 30 is formed in a posture in which the extending direction of the plate portion 30b is inclined at an angle α of 1 degree or more and 2 degrees or less with respect to the horizontal plane.

In addition, since the two plate portions 30a and 30b formed as the part 30 are orthogonal to each other, the two plate portions 30a and 30b formed as the part 30 are opposite to the extension direction of the plate portion 30a located on the upper side in the mold 50 The part 30 is formed in an inclined posture in the vertical direction. In this embodiment, the component 30 is formed in a posture in which the extending direction of the plate portion 30a is inclined at an angle α of 1 degree or more and 2 degrees or less with respect to the vertical direction. In particular, the angle at which the plate portion 30b is inclined with respect to the horizontal plane and the angle α at which the extending direction of the plate portion 30a is inclined with respect to the vertical direction are preferably 1.5 degrees or more. In addition, in the case of an excessive tilt, depending on the shape of the screw hole formed in the plate portion, it may become difficult to detach from the mold. Therefore, in this embodiment, the angle at which the plate portion 30b is inclined with respect to the horizontal plane and the angle α at which the extending direction of the plate portion 30a is inclined with respect to the vertical direction are preferably an angle of 1 degree or more and 2 degrees or less.

6 (a) to (d), each step of forming the part 30 by die casting will be described. In addition, FIG. 7 shows a flow chart of the flow when the box 100 is manufactured by the method of manufacturing the box 100 of this embodiment.

First, as shown in FIG. 6( a ), the upper mold 51 and the lower mold 52 in the mold 50 are brought close, and as shown in FIG. 6( b ), the upper mold 51 and the lower mold 52 are brought into contact. The upper mold 51 abuts the lower mold 52 and the mold 50 is in a closed state, thereby forming a cavity 53 between the upper mold 51 and the lower mold 52.

When the mold cavity 53 is formed, as shown in FIG. 6(c), a molten liquid that heats and melts aluminum is injected into the cavity 53 formed by being inclined in the mold 50. Here, the melt is injected into the cavity 53 in a state where pressure is applied to the melt in such a way that the melt spreads to all corners of the cavity 53. In this way, the molten liquid is injected into the cavity 53 (S1).

When the molten metal is injected into the mold cavity 53 and the mold 50 is cooled, the molten liquid in the mold 50 is solidified, whereby the part 30 is formed into a shape corresponding to the mold cavity 53. Thereby, a part 30 having a desired shape is formed inside the cavity 53.

When the part 30 is formed inside the cavity 53, the upper mold 51 and the lower mold 52 in the mold 50 are separated (S2). When the upper mold 51 and the lower mold 52 are far away, as shown in FIG. 6(d), the part 30 formed between the upper mold 51 and the lower mold 52 is taken out of the mold cavity 53. In this embodiment, when the upper mold 51 and the lower mold 52 are relatively distant, the part 30 is taken out from the cavity 53 in a state where the part 30 is attached to the upper mold 51. When the part 30 is taken out from the mold cavity 53, the part 30 is removed from the upper mold 51, and the part 30 is taken out from the mold 50 (S3).

At this time, the mold 50 is divided into two parts of the upper mold 51 and the lower mold 52, and only one of the upper mold 51 and the lower mold 52 is used to form the outer surfaces of the two plate portions 30a, 30b. (Main surface), thereby forming parts 30. In this embodiment, by molding the lower mold 52, two outer surfaces (main surfaces) of the two plate portions 30a and 30b are formed.

As described above, in this embodiment, the component 30 is produced by die casting. In this embodiment, a plurality of parts 30 of different types are formed by die casting, and one part 11 of the parts 30 is used as one of the parts 11 and 12 (the first part) 11 of the box forming member 10 Features. In addition, the mold forming one part 11 functions as one mold (first mold) 50. As described above, one of the parts 11 and 12 constituting the box forming member 10 is formed by die casting (first part forming step). When a part 11 is formed inside a mold 50, the part 11 is taken out of the mold 50 (S3).

When one part 11 is formed by die-casting, the other part (second part) 12 of the parts 11 and 12 constituting the box forming member 10 is formed.

As shown in Figure 4, because the shape of one part 11 is different from that of the other part 12, when making another part 12, use a different mold (the first mold) when making one part 11. Mold (the second mold). However, since one part 11 and the other part 12 have substantially the same structure, in the manufacturing steps of the other part 12, the same manufacturing steps as the manufacturing steps of the one part 11 are used. Therefore, when another part 12 is produced, it can also be produced by the production steps shown in FIGS. 6(a) to (d).

That is, as shown in Fig. 6(a), the upper mold (third mold) and the lower mold (fourth mold) are separated from another mold (the second mold), as shown in Fig. 6(b), The upper mold of the other mold abuts against the lower mold to form a cavity between them. When a cavity is formed between the upper mold and the lower mold of another mold, as shown in Figure 6(c), the melt is pressed into the cavity formed by tilting in the other mold (S4). When the melt is pressed into another mold, the other mold is cooled and the melt solidifies inside the other mold, thereby forming another part. Thereby, another part (second part) is formed inside the cavity (second part forming step). When another part is formed inside the cavity, the upper mold and the lower mold in another mold are far away (S5). By separating the upper mold and the lower mold, as shown in Figure 6(d), another part formed between the upper mold and the lower mold is attached to the upper mold and taken out from the cavity. When the other part is taken out from the mold cavity, the other part is removed from the upper mold, and the other part is taken out from the other mold (S6).

In addition, in the present embodiment, the configuration in which two parts 11 and 12 have mutually different shapes has been described. Therefore, the description has been given of the form in which the shape of the cavity is different between the mold (the first mold) for forming the part 11 and the other mold (the second mold) for forming the part 12. However, the present invention is not limited to the above-mentioned embodiment. The shape of the part 11 (the first part) and the shape of the part 12 (the second part) may be the same shape.

In this case, the mold used to form the part 11 and the mold used to form the part 12 may be the same. It is also possible to use a common mold (third mold) with a common upper mold (5th mold) and a lower mold (6th mold) to produce two parts (third part) with the same shape to form a composition box The body forms two parts of the member 10. That is, the step of forming two common parts (third part) (third part forming step) is performed twice to form two common parts. As described above, since two parts (the third part) are made by a common mold, the number of molds required can be reduced, and the manufacturing cost of the box 100 can be kept low.

When both of the two parts 11 and 12 constituting the box forming member 10 are formed by die casting, the parts 11 and 12 are assembled to form the box forming member 10 (box forming member assembling step) (S7 ). In this embodiment, the two parts 11 and 12 are fastened to each other with screws, thereby assembling the box forming member 10.

In addition, when two parts are formed by a common mold, the box forming member 10 can also be formed by using two common parts thus obtained and assembling the two parts. At this time, it is also possible to assemble the box forming member 10 by fastening two common parts with screws.

By fastening the two parts 11 and 12 to each other, the box forming member 10 is formed. In this embodiment, the plate portion 11b of the two plate portions 11a, 11b of one component 11 and the plate portion 12a of the plate portions 12a, 12b of the other component 12 are connected to each other to form one板部13。 Board part 13. Therefore, as a result, the box forming member 10 has three plate portions 11a, 13, 12b.

Since the plate portion 11a and the plate portion 11b constituting a part 11 are connected in such a way that the angle formed by the main surfaces becomes 90 degrees, the plate portion 11a and the plate portion 13 are formed by the angles formed by the outside surfaces of 90 degrees. The way to connect. In addition, since the plate portion 12a and the plate portion 12b constituting the other part 12 are connected such that the angle formed by the outer surfaces becomes 90 degrees, the plate portion 11a and the plate portion 13 are formed by the outer surfaces. The angle becomes 90 degrees to connect. Therefore, the three plate parts 11a, 13 and 12b constituting the box forming member 10 are connected in a U shape so that the angle formed by the outer surfaces becomes 90 degrees.

When the box forming member 10 is formed, the box forming member 10 is used to form the box 100 (box forming step) (S8). In this embodiment, the box body 100 is formed by mounting the box-forming member 10 of the U-shape on the other side surface and installing the surface on the upper side of the box body 100.

As shown in FIG. 1, in the box body 100, the surface F1, which is grounded and becomes the bottom surface, the surface F2, which is adjacent to the surface F1, and the surface (not shown) opposite to the surface F2, are integrally formed by die casting to form the box body The member 10 is formed. The surface F1, the surface F2, and the surface other than the surface facing the surface F2 are attached to the box forming member 10 to form the box 100.

As described above, the parts 11 and 12 obtained by die casting are assembled to form the box forming member 10, and the box forming member 10 is used to form the box 100.

In addition, in the above-mentioned embodiment, the form in which the box forming member 10 is formed by assembling the two parts 11 and 12 by fastening with screws has been described. However, the present invention is not limited to the above-mentioned embodiment, and assembling between parts can also be performed by methods other than fastening with screws. For example, it is also possible to assemble parts with each other by using other methods such as adhesive bonding.

According to this embodiment, the parts 11 and 12 are formed by die casting, and the parts 11 and 12 are assembled, thereby forming the box forming member 10. Each of the parts 11 and 12 obtained by dividing the box forming member 10 is formed by die casting. Therefore, when the parts 11 and 12 are produced by die-casting, the parts 11 and 12 composed of two plates are respectively produced. Therefore, the parts 11 and 12 can be formed into an L-shape formed by connecting the two plates. shape. In addition, since each of the parts 11 and 12 has two plate portions and is formed in an L-shape, the two plate portions can be connected to each other in a state that the angle formed by the outer surfaces is 90 degrees. The parts 11 and 12 are formed. Thereby, adjacent surfaces in the box-forming member 10 are connected so that the angle formed by the outer surfaces becomes 90 degrees, and the box 100 is formed. Therefore, in the box body 100, the adjacent plate members are connected so that the angle formed by the outer surfaces becomes 90 degrees. Thereby, in the box body 100, it is possible to maintain the relationship that the angle formed by the outer surfaces between adjacent plate members becomes 90 degrees.

In particular, the plate portions 11a, 13 and 12b are connected to each other so that the angle formed by the outer surfaces of the three plate portions 11a, 13, and 12b constituting the box forming member 10 becomes 90 degrees. Since the angle between the adjacent surfaces of the box 100 is maintained at 90 degrees, even if the grounded surface of the box 100 is changed, the box 100 can be arranged in a stable state. Even if the posture of the box 100 is changed according to the installation space of the box 100, the box 100 can be arranged stably. Therefore, when a small space for placing the box 100 is vacated, it can be arranged according to the empty space. The posture of the exit space is changed, and the cabinet 100 is arranged. For example, in a situation where there is only a slender and narrow installation space, the posture of the box 100 can be changed according to the installation space and the box 100 can be arranged stably. In this way, the space for installing the box 100 can be used more efficiently. In addition, since the box body 100 can be arranged stably, the box body 100 can be prevented from falling over, and the reliability of the box body 100 can be improved. Therefore, when the box 100 is used as a controller of a robot, the reliability of the controller can be improved.

In particular, when installing the robot, depending on the installation place of the robot, the installation space of the box 100 as the controller for storing the control board 80 may be limited. In this case, it is required to arrange the box 100 in such a way that the posture is changed according to the limited space and the box 100 is stored in the space. For example, when the installation space has a slender shape, considering the state of the box 100 shown in FIG. 1, the posture is changed to arrange the box 100 in the installation space. In the state shown in FIG. 1, the box body 100 is arranged in a state where the surface F1 is grounded, but considering changing the posture, it is arranged in a state where the surface F2 is grounded. In this way, by changing the posture to arrange the box 100, when the installation space is elongated, the box 100 can be arranged according to the elongated installation space. Thereby, the installation space can be used efficiently.

In addition, since the orthogonal relationship between the adjacent surfaces of the box 100 is maintained, the quality of the design of the box 100 can be improved.

In addition, in this embodiment, the mold 50 is divided into two parts of the upper mold 51 and the lower mold 52, and only one of the upper mold 51 and the lower mold 52 is used to form two of the two plate parts 30a, 30b. The outer surface (main surface), thereby forming part 30. Therefore, it is formed by forming a surface outside the main surface of the plate portions 30a and 30b by one mold (lower mold 52). Thereby, it is possible to accurately form the outer surface of the plate portions 30a and 30b such that the angle formed by the outer sides of the main surfaces of the plate portions 30a and 30b becomes 90 degrees.

In addition, the part 30 is formed in an inclined posture inside the mold 50. Inside the mold 50, the intersection line 1 formed by the outer surfaces of the two plate portions 30a, 30b intersecting each other is arranged at the lowermost position, and the direction in which a plate portion 30b extends from the intersection line 1 is opposite to the horizontal plane The inclined posture forms the part 30 to form the cavity 53. Therefore, the cavity 53 is formed in a convex shape toward the lower side inside the mold 50. Each part of the cavity 53 corresponding to the plate portions 30a and 30b is configured to have a draft angle. Therefore, even if the part 30 produced by the mold 50 is formed such that the two plate portions 30a and 30b are orthogonal to each other, the draft angle when the part 30 is separated from the mold 50 is ensured. Since the surface on the outer side of the plate portion 30a is inclined with respect to the vertical direction, and the surface on the outer side of the plate portion 30b is inclined with respect to the horizontal direction, the draft angle of the part 30 is ensured. Therefore, when the part 30 is produced by die casting and the part 30 is taken out from the mold 50, the part 30 can be smoothly taken out from the mold 50.

In addition, not only the outer surface, but also the orthogonal relationship between the two plates of the parts 11 and 12 produced by die-casting are maintained, so the box body formed by assembling the parts 11 and 12 is maintained. The relationship between adjacent plate members in the member 10 is orthogonal to each other. Therefore, when the box body 100 is assembled, the orthogonal relationship between adjacent plate members in the box body 100 is maintained. At this time, the orthogonal relationship between the plate members constituting the box forming member 10 in the box 100 is maintained.

In addition, in the present embodiment, it is not necessary to form a draft angle in the part, and it is not necessary to form the side surface of the plate part constituting the part into a tapered shape, so that the plate thickness of each plate part can be uniformly formed. Therefore, the design quality of the box 100 can be further improved. In addition, since the plate thickness of the plate parts constituting the part can be formed uniformly, the periphery of the part where the plate parts are connected to each other can be formed not thickly. Therefore, a larger space can be secured around the part where the plates are connected to each other. Thereby, accessories and the like can be accommodated in the space around the part where the plates are connected to each other, and more can be accommodated as a box. In this way, the space inside the box can be used more efficiently.

Generally, when the box is used as the controller of the robot, the possibility of the box becoming relatively large is higher. When the box body is small, even if the angle between the adjacent surfaces of the box body is offset from 90 degrees in order to form the draft angle from the mold, the effect caused by this is small, so it is not Will cause problems. However, when the size of the box becomes larger, even if the angle formed by the adjacent surfaces is slightly offset from 90 degrees, the influence caused by this will also become larger. When the size of the box is large, even if the angle between the adjacent surfaces is slightly offset from 90 degrees, the size of the slope caused by the offset also becomes larger, and the ends of the opposite surfaces are mutually The difference between the heights has also become larger. Therefore, when the posture is changed by changing the grounding surface of the box, the grounding surface of the box is inclined, so the configuration of the box may become unstable. Since the cabinet is configured in an unstable state, there is a possibility that the cabinet may tip over when there is contact or shaking during the configuration of the cabinet.

Conventionally, when a relatively large box is made by die-casting, it is also used to remove the protruding part caused by the deviation of the right angle from the angle of the intersection of adjacent surfaces caused by the draft angle. situation. Thereby, a box can be manufactured in which the angle between adjacent surfaces is maintained at 90 degrees. However, in such a method of removing the protruding part by cutting, a step of removing the protruding part in the box body is required, which accordingly takes extra time and labor. In addition, the removed part is uselessly discarded, correspondingly more materials are required, and the manufacturing cost of the additional material becomes higher.

In the box 100 of this embodiment, even if it is a box 100 of a larger size, the draft angle from the mold 50 can be ensured while maintaining the orthogonal relationship between the plate portions 30a and 30b . Since the angle between the plate portions 30a and 30b is maintained at 90 degrees, as a result, the angle between the adjacent surfaces in the box 100 is maintained at 90 degrees. Therefore, when the posture is changed by changing the grounding surface of the box 100, the box 100 can also be arranged in a stable state.

In addition, in order not to form a draft angle and maintain a relationship of 90 degrees between adjacent surfaces, it is also considered to change the structure of the mold. Consider changing the mode and movement of the clamping and opening of the molds in the mold to maintain the right angle relationship between the adjacent surfaces in the component. However, the shape and movement of the mold become complicated when the die-casting situation is changed in order to make the state and movement of the clamping and mold opening between the molds correspond to the components. Therefore, there is a possibility that the manufacturing cost of the mold will increase.

In this embodiment, the mold 50 is divided into two parts of the upper mold 51 and the lower mold 52, and only one of the upper mold 51 and the lower mold 52 is used to form the outer sides of the two plate portions 30a, 30b. The surface (main surface), thereby forming the part 30. Divide the mold 50 into two parts of the upper mold 51 and the lower mold 52, and form the plate portion 30a accurately by forming the angle formed by the outer sides of the plate portions 30a and 30b as the main surface at 90 degrees. , 30b is the outer side surface, so it is possible to accurately form parts that intersect so that the angle formed by the outer side surfaces becomes 90 degrees with the simple mold 50. Since the structure of the mold 50 can be simplified, the manufacturing cost of the box body 100 can be kept low.

Furthermore, in this embodiment, the parts 30 for forming the box body 100 are each formed of aluminum, and as a result, the box body 100 is formed of aluminum. Therefore, the box 100 maintains high heat dissipation performance.

In this embodiment, the box 100 contains a control board 80 for controlling the action of the robot 60 inside, and is configured as a robot controller. Therefore, a large amount of heat is generated from the control substrate 80. In this embodiment, since the box body 100 is formed of aluminum, the heat generated from the control board 80 is efficiently released to the outside of the box body 100. Therefore, the influence of the heat on the function of the control substrate 80 can be suppressed to be small. In addition, since the box 100 is made of aluminum, the weight of the box 100 can be reduced. Therefore, the box 100 can be easily transported.

In addition, in this embodiment, the part 30 made of aluminum is produced by die casting. Therefore, the parts 30 as aluminum products can be produced in large quantities at low cost by die casting.

In addition, since the L-shaped parts 30 are assembled to form the U-shaped box forming member 10, the box forming member 10 is used to form the box-shaped box 100, so it can be performed at the stage of the L-shaped parts 30 The work of installing the substrate or accessories on the part 30. Since the substrate or accessory is mounted on the component 30 at the stage of the L-shaped component 30, the mounting operation of the substrate or accessory to the component 30 can be performed in the open space on the upper side. Therefore, it is easy to perform the mounting operation of the substrate or the accessories to the box body 100, and the assembly including the mounting operation can be easily performed.

Moreover, in this embodiment, as shown in FIG. 4, various processes are applied to the inner surface of the box 100. Especially, when the box 100 is used as the controller of the robot, when the substrate is installed inside the box 100, the heat generated in the substrate is transferred to the side of the box 100 and the box 100 is absorbed For heat, there are cases where a part of the side of the box 100 is used as a heat sink. In this case, a portion where the substrate is placed and a portion functioning as a heat sink are formed on the inner side of the side surface of the box body 100, so the shape of the inner side of the side surface of the box body 100 may become complicated.

When the inner side of the side surface of the box body 100 is made into a complicated shape as described above, there are cases in which the part of the inner side of the side surface of the box body 100 is processed by machining. In the case of machining to make the inner surface of the box 100 into a complicated shape by machining, the knife of the cutting machine must be inserted into the space surrounded by the plate-shaped member so that the knife touches the plate-shaped The inner side of the component. When the member is formed in a U shape, the space for inserting the knife is limited, and it is difficult to insert the knife into the space surrounded by the plate-shaped member.

In this embodiment, the inner surface can be processed at the stage of the part 30. In this embodiment, in the middle of manufacturing the box 100, the U-shaped box forming member 10 is divided into L-shaped parts 30. Since the inner surface of the L-shaped part 30 can be processed at the stage, the upper side is open and the inner surface of the part 30 can be processed without restricting the space. Therefore, the inner surface of the part 30 can be processed easily and accurately.

In addition, since the substrate or accessories are mounted on the part 30 at the stage of the L-shaped part 30, when the accessories are mounted on the inner side of the box 100, the back of the part 30 can be grounded stably. Install the accessories.

FIG. 8 is a side view of the part 30 in each step when the accessory is attached to the part 30. In FIG. 8, the form in which two substrates as accessories are mounted on the component 30 up and down will be described.

First, as shown in Fig. 8(a), the board 70 arranged below is mounted on the plate portion 30b on the grounding side of the component 30. The substrate 70 is installed along the inner surface of the plate portion 30b. At this time, the substrate 70 can be stably mounted on the board portion 30b in a state where the surface on the outer side of the board portion 30b on the grounded side is grounded.

When the substrate 70 is installed on the plate portion 30b on the grounding side, as shown in FIG. 8(b), the posture of the component 30 is changed, and the grounding surface is changed. Thereby, the board portion 30b that is grounded when the board 70 is installed stands upright, and the board portion 30a that is upright when the board 70 is installed is grounded.

When the part 30 changes its posture to ground the plate portion 30a, the board 71 mounted on the upper side is mounted on the plate portion 30a. The substrate 71 is installed along the extending direction of the plate portion 30b from the side surface of the plate portion 30a. At this time, the substrate 71 can be stably mounted on the plate portion 30a in a state where the surface on the outer side of the plate portion 30a on the grounded side is grounded.

In this embodiment, in order to mount the board 71 on the board portion 30a, the board 71 is mounted on the board portion 30a via the support portion 72. The substrate 71 is mounted on the support portion 72, and the support portion 72 is mounted on the plate portion 30a by screws through the hole 73 formed in the support portion 72. Therefore, the supporting portion 72 can be attached to the board portion 30a by screws in a state where the screws are orthogonal to the board portion 30a. Thereby, the supporting portion 72 can be mounted on the plate portion 30a in a stable state.

In this way, in this embodiment, since the accessory is attached to the L-shaped component 30, it is possible to attach the accessory to the plate portion 30b in a state where the outer surface of the plate portion 30b is grounded. In addition, it is possible to attach accessories to the inner surface of the plate 30a while the outer surface of the plate 30a is grounded. Therefore, it is possible to attach accessories to both of the two plate parts of the L-shaped component 30 in a state where the plate parts are grounded and stabilized. Therefore, the accessory can be easily installed in the box 100. In addition, the accessories can be reliably installed in the box body 100, and the reliability of the box body 100 can be improved.

In addition, in the above-mentioned embodiment, the form in which molten aluminum is formed by melting has been described, but the present invention is not limited to the above-mentioned embodiment. The melt may also be formed of materials other than aluminum. As long as the box can be formed of metal, other types of melt can also be used.

30‧‧‧Parts 30a, 30b‧‧‧Board 50‧‧‧Mould 51‧‧‧Upper die 52‧‧‧Die 53‧‧‧Mold cavity 100‧‧‧Box

Fig. 1 is a perspective view of a box made by the method of making a box according to an embodiment of the present invention. Figure 2 is a configuration diagram of the box and the robot when the box of Figure 1 is used as a box for a robot controller. Fig. 3 is a perspective view of a box-forming member located at the lower part of the box of Fig. 1. 4 is a perspective view of the box forming member in a state where the box forming member of FIG. 3 is divided into two parts. Fig. 5 shows a cross-sectional view of a mold and parts when the parts constituting the box forming member of Fig. 3 are formed by die casting. Figures 6(a) to (d) are structural diagrams showing the steps of forming the parts constituting the box forming member of Figure 3 by die casting. Figure 7 is a flow chart showing the process of making the box of Figure 1. Fig. 8 is a side view showing the parts of each step when the accessories are installed inside the parts constituting the box forming member of Fig. 3.

30‧‧‧Parts

50‧‧‧Mould

51‧‧‧Upper die

52‧‧‧Die

53‧‧‧Mold cavity

Claims (7)

A method for making a box, which is characterized by having: The first part forming step corresponds to the first part having two plate portions connected so that the angle formed by the main surface becomes 90 degrees and corresponds to the inside of the first mold having the first mold and the second mold Melt is injected into the mold cavity, and only one of the first mold and the second mold is used to form two of the main surfaces of the two plate portions, thereby forming the first part; The second part forming step corresponds to the second part having two plate parts connected so that the angle formed by the main surface becomes 90 degrees, and corresponds to the inside of the second mold having the third mold and the fourth mold Melt is injected into the mold cavity, and only one of the third mold and the fourth mold is used to form two of the main surfaces of the two plate portions, thereby forming the second part; The assembling step of the box forming member is formed by assembling the first part obtained in the first part forming step and the second part obtained in the second part forming step to form three plates Part of the box forming member; and The box forming step uses the box forming member obtained in the box forming member assembling step to form a box. The method for manufacturing a box according to claim 1, wherein, in the first part forming step and the second part forming step, each cavity is used in each of the first mold and the second mold Inside, the line of intersection formed by the principal surfaces of the two plate portions intersecting each other is formed at the lowest position. The method of manufacturing a box according to claim 2, wherein, in the first part forming step and the second part forming step, each cavity is used in each of the first mold and the second mold Inside, the first part and the second part are formed in a posture in which a plate portion extends from the intersection line and is inclined with respect to a horizontal plane. The method for manufacturing a box according to any one of claims 1 to 3, wherein the melt is formed by melting aluminum. The method of manufacturing a box according to any one of claims 1 to 3, wherein the box system contains a box for a controller of a control board. The method for manufacturing a box according to claim 5, wherein the control board is a control board for controlling a robot. A method for making a box, which is characterized by having: The third part forming step corresponds to the third part having two plate parts connected so that the angle formed by the main surface becomes 90 degrees and corresponds to the inside of the third mold having the fifth mold and the sixth mold Melt is injected into the mold cavity, and only one of the fifth mold and the sixth mold is used to form two of the main surfaces of the two plate portions, thereby forming the third part; A box forming member assembling step, which uses two of the above-mentioned third parts obtained in the above-mentioned third part forming step and assembling two of the above-mentioned third parts, thereby forming a box forming member with three plate portions; and The box forming step uses the box forming member obtained in the box forming member assembling step to form a box.

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