Casting mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a casting mold. A mold groove, a first positioning groove, a second positioning groove and a third positioning groove are formed in the mold body, the first positioning groove is communicated with the first side edge of the mold groove, the second positioning groove is communicated with the second side edge of the mold groove, and the third positioning groove is communicated with the third side edge of the mold groove; two opposite ends of the second side edge are respectively connected with the first side edge and the third side edge; the connecting line between the first positioning groove and the third positioning groove is a first straight line, the first straight line is parallel to the second side edge, and the center point of the mold groove is located on the first straight line; the straight line perpendicular to the first connecting line and penetrating through the second positioning groove is a second straight line, and the center point of the mold groove is located on the second straight line. According to the casting part cast and formed by the mold body, unqualified casting parts can be removed in time, and the machining precision is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, in particular to a casting mold. Background Art

[0002] The back shells of electronic devices like tablets and mobile phones are typically made of metal. The typical machining process for these metal back shells is as follows: The general shape of the back shell is first created using a casting process. The back shell is then placed in a jig, and the bottom and sides are machined to ensure thickness and flatness. After casting, the back shell requires a positioning element. When placed in the jig, the positioning element rests in the jig's positioning grooves, ensuring precise positioning. The machining spindle uses the center of the jig as its centering point, and then the back shell is machined in the jig.

[0003] In the prior art, the back shell manufactured by the mold usually has multiple positioning parts on the left and right sides of the back shell. After the back shell is deformed due to the cooling principle after mold manufacturing, the jig changes from a square to a parallelogram. The positioning parts on the left and right sides of the back shell are then placed in the jig as the positioning centers, which will cause the center of the back shell to not coincide with the center of the jig. When machining with the center of the mold as the positioning center of the main shaft, it will cause technical problems such as uneven wall thickness and low processing accuracy of the back shell. Summary of the Invention

[0004] The utility model solves the technical problem in the prior art that positioning parts are provided on the left and right sides of a back shell in a casting mold, and displacement of the left and right positioning parts leads to low machining accuracy, and provides a casting mold.

[0005] In view of the above problems, an embodiment of the present invention provides a casting mold, including a mold body, wherein the mold body is provided with a mold groove, a first positioning groove, a second positioning groove, and a third positioning groove, wherein the first positioning groove is connected to a first side of the mold groove, the second positioning groove is connected to a second side of the mold groove, and the third positioning groove is connected to a third side of the mold groove, and opposite ends of the second side are respectively connected to the first side and the third side;

[0006] The connecting line between the first positioning groove and the third positioning groove is a first straight line, the first straight line is parallel to the second side, and the center point of the mold groove is on the first straight line;

[0007] A straight line perpendicular to the first connecting line and passing through the second positioning groove is a second straight line, and the center point of the mold groove is on the second straight line.

[0008] Optionally, the mold body is further provided with a first casting channel, a second casting channel and a third casting channel;

[0009] The first casting channel is connected to the first side through the first positioning groove, the second casting channel is connected to the second positioning groove and the second side, and the third casting channel is connected to the third side through the third positioning groove.

[0010] Optionally, the mold groove includes a bottom groove and a first side groove, a second side groove, a third side groove and a fourth side groove sequentially connected around the bottom groove;

[0011] The first positioning groove is connected to one end of the first side groove away from the bottom groove; the second positioning groove is connected to one end of the second side groove away from the bottom groove; and the third positioning groove is connected to one end of the third side groove away from the bottom groove.

[0012] Optionally, the mold body includes an upper mold and a lower mold, and the mold groove, the first positioning groove, the second positioning groove and the third positioning groove are arranged between the upper mold and the lower mold.

[0013] In the present invention, the casting liquid forms a casting in the mold groove, the casting liquid forms a first positioning portion in the first positioning groove, the casting liquid forms a second positioning portion in the second positioning groove, and the casting liquid forms a third positioning portion in the third positioning groove, so that the casting cast by the mold body is respectively formed with the first positioning portion, the second positioning portion and the third positioning portion at three adjacent sides; and the connecting line between the first positioning portion and the third positioning portion is the third straight line, and the straight line perpendicular to the third straight line and passing through the second positioning portion is the fourth straight line. Under normal circumstances, the center point of the casting is located on the third straight line and the fourth straight line.

[0014] When the casting is placed in the jig with the first positioning portion, the second positioning portion and the third positioning portion as the positioning center, if the casting undergoes slight deformation due to cooling, it is only necessary for the third straight line and the fourth straight line to pass through the center point of the manufactured part, thereby ensuring that the center of the casting is located at the center of the jig and coincides with the center of the jig. When the casting in the jig is machined, the spindle can be positioned at the center point of the casting through the jig, thereby ensuring the machining quality of the casting.

[0015] If the casting undergoes a large deformation due to cooling, the center point of the casting is not on the third straight line and the fourth straight line, and the center of the casting does not coincide with the center of the jig. As a result, when the casting on the jig is processed, the spindle cannot locate the center point of the casting, resulting in unqualified machining of the casting; however, since the offset of the first positioning part, the second positioning part and the third positioning part is too large, the casting will not be placed in the jig, so that unqualified castings can be eliminated in time before machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 A schematic diagram of a casting mold provided in one embodiment of the present utility model;

[0018] Figure 2 This is a structural schematic diagram of a casting cast by a casting mold provided in one embodiment of the present invention.

[0019] The reference numerals in the specification are as follows:

[0020] 11. Mold groove; 111. Bottom groove; 112. First side groove; 113. Second side groove; 114. Third side groove; 115. Fourth side groove; 12. First positioning groove; 13. Second positioning groove; 14. Third positioning groove; 15. First casting channel; 16. Second casting channel; 17. Third casting channel; 2. First straight line; 3. Second straight line; 4. Casting; 41. First positioning portion; 42. Second positioning portion; 43. Third positioning portion; 44. Third straight line; 45. Fourth straight line. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] It should be understood that the terms "upper", "lower", "left", "right", "front", "back", "middle", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0023] like Figure 1As shown, an embodiment of the present invention provides a casting mold, including a mold body, on which a mold groove 11, a first positioning groove 12, a second positioning groove 13 and a third positioning groove 14 are provided. The first positioning groove 12 is connected to the first side of the mold groove 11, the second positioning groove 13 is connected to the second side of the mold groove 11, and the third positioning groove 14 is connected to the third side of the mold groove 11. The opposite ends of the second side are respectively connected to the first side and the third side; it can be understood that the mold groove 11 is a directional groove, the first side, the second side and the third side are respectively the three adjacent sides of the mold groove 11, and the first positioning groove 12, the second positioning groove 13 and the third positioning groove 14 all extend toward the outside of the mold groove 11.

[0024] The connecting line between the first positioning groove 12 and the third positioning groove 14 is a first straight line 2, the first straight line 2 is parallel to the second side, and the center point of the mold groove 11 is on the first straight line 2;

[0025] A straight line perpendicular to the first connecting line and passing through the second positioning groove 13 is a second straight line 3 , and the center point of the mold groove 11 is on the second straight line 3 .

[0026] In the present utility model, Figure 1 and Figure 2 As shown, the casting liquid forms a casting 4 in the mold groove 11, the casting liquid forms a first positioning portion 41 in the first positioning groove 12, the casting liquid forms a second positioning portion 42 in the second positioning groove 13, and the casting liquid forms a third positioning portion 43 in the third positioning groove 14, so that the casting 4 cast by the mold body is respectively formed with the first positioning portion 41, the second positioning portion 42 and the third positioning portion 43 at three adjacent sides; and the connecting line between the first positioning portion 41 and the third positioning portion 43 is a third straight line 44, and the straight line perpendicular to the third straight line 44 and passing through the second positioning portion 42 is a fourth straight line 45. Under normal circumstances, the center point of the casting 4 is located on the third straight line 44 and the fourth straight line 45.

[0027] When the casting 4 is placed in the jig with the first positioning portion 41, the second positioning portion 42 and the third positioning portion 43 as the positioning center, if the casting 4 is slightly deformed due to cooling, it is only necessary for the third straight line 44 and the fourth straight line to pass through the center point of the manufactured part to ensure that the center of the casting 4 is located at the center of the jig and coincides with the center of the jig. When the casting 4 in the jig is machined, the spindle can be positioned to the center point of the casting 4 through the jig, thereby ensuring the machining quality of the casting 4.

[0028] If the casting 4 undergoes a large deformation due to cooling, the center point of the casting 4 is not on the third straight line 44 and the fourth straight line 45, so that the center of the casting 4 does not coincide with the center of the jig, and when the casting 4 on the jig is processed, the spindle cannot locate the center point of the casting 4, resulting in unqualified machining of the casting 4; however, since the offset of the first positioning part 41, the second positioning part 42 and the third positioning part 43 is too large, the casting 4 will not be placed in the jig, so that the unqualified casting 4 can be eliminated in time before machining.

[0029] In one embodiment, if Figure 1 As shown, the mold body is further provided with a first casting channel 15, a second casting channel 16, and a third casting channel 17; the first casting channel 15 is connected to the first side through the first positioning groove 12, the second casting channel 16 is connected to the second positioning groove 13 and the second side, and the third casting channel 17 is connected to the third side through the third positioning groove 14. It can be understood that the casting liquid can flow into the first positioning groove 12 and the first side of the positioning groove through the first casting channel 15, and a first positioning portion 41 extending outward can be formed at the first side of the casting 4; the casting liquid can flow into the second positioning groove 13 and the second side of the positioning groove through the second casting channel 16, and a second positioning portion 42 extending outward can be formed at the second side of the casting 4; the casting liquid can flow into the third positioning groove 14 and the third side of the positioning groove through the third casting channel 17, and a third positioning portion 43 extending outward can be formed at the third side of the casting 4. After the casting 4 is machined, it is convenient to cut off the first positioning portion 41 , the second positioning portion 42 and the third positioning portion 43 , thereby ensuring the quality of the casting 4 .

[0030] In one embodiment, if Figure 1 As shown, the mold groove 11 includes a bottom groove 111 and a first side groove 112, a second side groove 113, a third side groove 114 and a fourth side groove 115 which are sequentially connected around the bottom groove 111; the first positioning groove 12 is connected to an end of the first side groove 112 away from the bottom groove 111; the second positioning groove 13 is connected to an end of the second side groove 113 away from the bottom groove 111; and the third positioning groove 14 is connected to an end of the third side groove 114 away from the bottom groove 111.

[0031] It can be understood that the casting liquid forms the bottom plate of the casting 4 in the bottom groove 111, the casting liquid forms the first side plate of the casting 4 in the first side groove 112, the casting liquid forms the second side plate of the casting 4 in the second side groove 113, the casting liquid forms the third side plate of the casting 4 in the third side groove 114, and the casting liquid forms the fourth side plate of the casting 4 in the fourth side groove 115.

[0032] In one embodiment, the mold body includes an upper mold (not shown) and a lower mold (not shown), and the mold groove 11, the first positioning groove 12, the second positioning groove 13, and the third positioning groove 14 are disposed between the upper mold and the lower mold. It is understood that the upper mold is provided with a protrusion, and the lower mold is provided with a groove. When the upper and lower molds are closed, the protrusion is inserted into the groove, thereby forming the mold groove 11 between the upper and lower molds. The first positioning groove 12, the second positioning groove 13, and the third positioning groove 14 are all disposed on the lower mold. When the upper and lower molds are closed, the upper mold can cover the first positioning groove 12, the second positioning groove 13, and the third positioning groove 14.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A casting mold, characterized in that: The mold body comprises a mold groove, a first positioning groove, a second positioning groove and a third positioning groove, wherein the first positioning groove is connected to a first side of the mold groove, the second positioning groove is connected to a second side of the mold groove, and the third positioning groove is connected to a third side of the mold groove, and opposite ends of the second side are respectively connected to the first side and the third side; The connecting line between the first positioning groove and the third positioning groove is a first straight line, the first straight line is parallel to the second side, and the center point of the mold groove is on the first straight line; A straight line perpendicular to the first straight line and passing through the second positioning groove is a second straight line, and the center point of the mold groove is on the second straight line.

2. The casting mold according to claim 1, characterized in that The mold body is further provided with a first casting channel, a second casting channel and a third casting channel; The first casting channel is connected to the first side through the first positioning groove, the second casting channel is connected to the second positioning groove and the second side, and the third casting channel is connected to the third side through the third positioning groove.

3. The casting mold according to claim 1, characterized in that The mold groove includes a bottom groove and a first side groove, a second side groove, a third side groove and a fourth side groove that are sequentially connected around the bottom groove; The first positioning groove is connected to one end of the first side groove away from the bottom groove; the second positioning groove is connected to one end of the second side groove away from the bottom groove; and the third positioning groove is connected to one end of the third side groove away from the bottom groove.

4. The casting mold according to claim 1, characterized in that The mold body includes an upper mold and a lower mold, and the mold groove, the first positioning groove, the second positioning groove, and the third positioning groove are arranged between the upper mold and the lower mold.

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