Improved water inlet pipe casting mold

Abstract

The utility model relates to the technical field of casting, and discloses an improved water inlet pipe casting mold which comprises a first outer mold, a second outer mold and a water inlet pipe sand core, and a first water inlet pipe half cavity, a sand core positioning groove A and a sand core positioning groove B are formed in the first outer mold; a second water inlet pipe half cavity, a sand core positioning groove C and a sand core positioning groove D are formed in the second outer mold; the lower end of the sand core positioning groove B and the lower end of the sand core positioning groove D are sealed; and a second half material pouring opening and a second half material pouring cavity are formed in the upper end of the second outer mold, two feeding openings are formed in the lower end of the second half material pouring cavity, and the feeding openings are enlarged. By sealing the lower end of the die and enlarging the size of the feed port, the loss of molten aluminum in the casting process can be effectively reduced, the feeding effect of the molten aluminum is improved, air holes of a water inlet pipe casting are reduced, the air tightness of the water inlet pipe can be effectively improved, and the stability and qualification of products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to an improved casting mold for a water inlet pipe. Background Art

[0002] The structure of the existing casting mold for a water inlet pipe is as shown in the attached instruction manual Figure 6 and its core structure is as shown in the attached instruction manual Figure 7 As shown, a protrusion 901 is provided at the lower end of the core, and a channel 902 for placing the protrusion 901 is provided at the lower end of the casting mold for the water inlet pipe, and the channel 902 is open. This structure causes the lower end of the water inlet pipe to easily cause the loss of molten aluminum during the casting process, resulting in the formation of pores or partial thin-wall phenomena in the water inlet pipe after casting; at the same time, the existing feeding port 903 of the existing casting mold for the water inlet pipe has a small diameter, and its size is approximately 12 mm * 2 mm. The small diameter causes the flowing speed of the added molten aluminum to be slow, resulting in untimely feeding of the molten aluminum, further increasing the possibility of pore generation and making the airtightness of the water inlet pipe poor. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an improved casting mold for a water inlet pipe. By sealing the lower end of the mold and increasing the size of the feeding port, the loss of molten aluminum during the casting process can be effectively reduced, the feeding effect of the molten aluminum can be improved, the generation of pores in the water inlet pipe casting can be reduced, the airtightness of the water inlet pipe can be effectively improved, and the stability and qualification rate of the product can be improved.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] An improved casting mold for a water inlet pipe includes a first outer mold, a second outer mold, and a water inlet pipe core. Two first water inlet pipe half-cavities arranged in parallel are formed on the first outer mold, and a core positioning groove A and a core positioning groove B are respectively formed at the upper and lower ends of the first water inlet pipe half-cavity; two second water inlet pipe half-cavities arranged in parallel are formed on the second outer mold, and a core positioning groove C and a core positioning groove D are respectively formed at the upper and lower ends of the second water inlet pipe half-cavity;

[0006] The lower ends of the core positioning groove B and the core positioning groove D are sealed;

[0007] The upper end of the water inlet pipe core is clamped between the core positioning groove A and the core positioning groove C, and the lower end of the water inlet pipe core is clamped between the core positioning groove B and the core positioning groove D. The first water inlet pipe half-cavity, the second water inlet pipe half-cavity, and the water inlet pipe core enclose a complete water inlet pipe cavity.

[0008] Through the above technical solution, the end of the water inlet pipe core is placed between the core positioning grooves A, B, C, and D, thereby fixing the water inlet pipe core in the mold cavity after the first outer mold and the second outer mold are closed. Pouring molten aluminum can cast the water inlet pipe. By sealing the lower ends of the core positioning groove B and the core positioning groove D, the loss of molten aluminum can be effectively reduced, thereby reducing the probability of pores and thin walls in the water inlet pipe casting, and improving the sealing performance and qualification rate of the product.

[0009] The present utility model is further configured as: a first half pouring port and a first half pouring cavity are formed at the upper end of the first outer mold;

[0010] A second half pouring port and a second half pouring cavity are formed at the upper end of the second outer mold. Two feeding ports are formed at the lower end of the second half pouring cavity, and the two feeding ports are respectively communicated with the upper ends of the corresponding second water inlet pipe half cavities;

[0011] The upper end of the feeding port is provided in an open manner; the feeding port is enlarged. The existing caliber is 12 mm * 4 mm, which is more than twice as large as the original caliber of 12 mm * 2 mm.

[0012] By increasing the caliber of the feeding port, the molten aluminum can enter the first water inlet pipe half cavity and the second water inlet pipe half cavity more quickly, and the molten aluminum can be compensated in time, thereby reducing the probability of pores and further improving the sealing performance of the water inlet pipe casting.

[0013] The present utility model is further configured as: an outer expansion cavity is formed at the upper end of the second half pouring cavity. By providing the outer expansion cavity, the capacity of the pouring cavity can be increased, thereby increasing the pressure of the molten aluminum in the first water inlet pipe half cavity and the second water inlet pipe half cavity, making the molten aluminum more dense, and the bubbles in the molten aluminum can be discharged in time by extrusion, reducing the pores in the water inlet pipe casting.

[0014] The present utility model is further configured as: the outer expansion cavity is provided in a tapered shape with a larger upper part and a smaller lower part;

[0015] A ventilation fine groove is formed at the upper end of the outer expansion cavity. Through the ventilation fine groove, the molten aluminum added from the pouring port to the pouring cavity can flow more smoothly, and at the same time, the remaining air in the pouring cavity can be discharged from the ventilation fine groove in time, reducing the gas content in the molten aluminum.

[0016] The present utility model is further configured as: a first positioning protrusion and a first positioning groove are formed on the first outer mold;

[0017] A second positioning groove matching with the first positioning protrusion and a second positioning protrusion matching with the first positioning groove are formed on the second outer mold.

[0018] Through the cooperation of two pairs of positioning protrusions and positioning grooves, the position of the first outer mold and the second outer mold can be made more accurate when they are closed, reducing the damage to the sand core and improving the dimensional qualification of the product.

[0019] The outstanding effect of the present utility model is:

[0020] Compared with the prior art, by setting the lower end sealing of the mold and increasing the size of the feeding port, the loss of molten aluminum during the casting process can be effectively reduced and the feeding effect of molten aluminum can be improved, reducing the generation of air holes in the water inlet pipe casting, effectively improving the air tightness of the water inlet pipe, and improving the stability and qualification of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is a structural schematic diagram of the first outer mold of the present utility model;

[0023] Figure 3 is a structural schematic diagram of the second outer mold of the present utility model;

[0024] Figure 4 is a structural schematic diagram of the water inlet pipe (casting) related to the present utility model;

[0025] Figure 5 is a structural schematic diagram of the water inlet pipe sand core of the present utility model;

[0026] Figure 6 is a structural schematic diagram of the existing water inlet pipe casting mold;

[0027] Figure 7 is a structural schematic diagram of the existing water inlet pipe sand core.

[0028] Reference numerals: 10, the first outer mold; 101, the first half-cavity of the water inlet pipe; 102, the sand core positioning groove A; 103, the sand core positioning groove B; 104, the first half-pouring port; 105, the first half-pouring cavity; 106, the first positioning protrusion; 107, the first positioning groove;

[0029] 20, the second outer mold; 201, the second half-cavity of the water inlet pipe; 202, the sand core positioning groove C; 203, the sand core positioning groove D; 204, the second half-pouring port; 205, the second half-pouring cavity; 206, the feeding port; 207, the outer expansion cavity; 208, the ventilation fine groove; 209, the second positioning groove; 210, the second positioning protrusion;

[0030] 30, the water inlet pipe sand core;

[0031] 901, the protrusion; 902, the groove; 903, the existing feeding port 903. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following further describes in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but not to limit the scope of the present utility model.

[0033] The following is a reference to Figures 1 to 5 describe the present utility model:

[0034] An improved water inlet pipe casting mold includes a first outer mold 10, a second outer mold 20, and a water inlet pipe sand core 30. Two first water inlet pipe half cavities 101 arranged in parallel are formed on the first outer mold 10. Sand core positioning grooves A 102 and sand core positioning grooves B 103 are respectively formed at the upper and lower ends of the first water inlet pipe half cavity 101; two second water inlet pipe half cavities 201 arranged in parallel are formed on the second outer mold 20. Sand core positioning grooves C 202 and sand core positioning grooves D 203 are respectively formed at the upper and lower ends of the second water inlet pipe half cavity 201;

[0035] The lower ends of the sand core positioning grooves B 103 and the sand core positioning grooves D 203 are sealed;

[0036] The upper end of the water inlet pipe sand core 30 is clamped between the sand core positioning grooves A 102 and the sand core positioning grooves C 202, and the lower end of the water inlet pipe sand core 30 is clamped between the sand core positioning grooves B 103 and the sand core positioning grooves D 203. The first water inlet pipe half cavity 101, the second water inlet pipe half cavity 201, and the water inlet pipe sand core 30 enclose a complete water inlet pipe cavity.

[0037] The end of the water inlet pipe sand core is placed between the sand core positioning grooves A 102, the sand core positioning grooves B 103, the sand core positioning grooves C 202, and the sand core positioning grooves D 203, so as to fix the water inlet pipe sand core in the mold cavity after the first outer mold and the second outer mold are closed. Pouring molten aluminum can cast the water inlet pipe. By sealing the lower ends of the sand core positioning grooves B 103 and the sand core positioning grooves D 203, the loss of molten aluminum can be effectively reduced, thereby reducing the probability of the water inlet pipe casting generating air holes and thin walls, and thus improving the sealing performance and qualification rate of the product.

[0038] A first half pouring port 104 and a first half pouring cavity 105 are formed at the upper end of the first outer mold 10;

[0039] A second half pouring port 204 and a second half pouring cavity 205 are formed at the upper end of the second outer mold 20. Two feeding ports 206 are formed at the lower end of the second half pouring cavity 205, and the two feeding ports 206 are respectively communicated with the upper ends of the corresponding second water inlet pipe half cavities 201;

[0040] The upper end of the feed inlet 206 is open; the feed inlet 206 is enlarged. The existing diameter is 12mm * 4mm, which is more than twice the original diameter of 12mm * 2mm.

[0041] By increasing the diameter of the feed inlet, the molten aluminum can enter the first half-cavity 101 of the water inlet pipe and the second half-cavity of the water inlet pipe more quickly, and the molten aluminum can be compensated in time, thereby reducing the probability of porosity generation and further improving the sealing performance of the water inlet pipe casting.

[0042] An outward-expanded cavity 207 is formed at the upper end of the second half-pouring cavity 205. By providing the outward-expanded cavity, the capacity of the pouring cavity can be increased, thereby increasing the pressure of the molten aluminum in the first half-cavity 101 of the water inlet pipe and the second half-cavity of the water inlet pipe, making the molten aluminum more dense, and the bubbles in the molten aluminum can be discharged in time by extrusion, reducing the porosity of the water inlet pipe casting.

[0043] The outward-expanded cavity 207 is provided in a tapered shape with a larger upper part and a smaller lower part;

[0044] A ventilation fine groove 208 is formed at the upper end of the outward-expanded cavity 207. Through the ventilation fine groove, the molten aluminum added from the pouring port to the pouring cavity can flow more smoothly, and at the same time, the remaining air in the pouring cavity can be conveniently discharged from the ventilation fine groove in time, reducing the gas content in the molten aluminum.

[0045] A first positioning protrusion 106 and a first positioning groove 107 are formed on the first outer mold 10;

[0046] A second positioning groove 209 that cooperates with the first positioning protrusion 106 and a second positioning protrusion 210 that cooperates with the first positioning groove 107 are formed on the second outer mold 20.

[0047] Through the cooperation of the two pairs of positioning protrusions and positioning grooves, the position of the first outer mold and the second outer mold can be more accurate when they are clamped, reducing the damage to the sand core and improving the dimensional qualification of the product.

[0048] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An improved casting mold for the water inlet pipe, comprising a first outer mold (10), a second outer mold (20) and a water inlet pipe core (30), characterized in that: Two first water inlet pipe half cavities (101) arranged side by side are formed on the first outer mold (10). A core positioning groove A (102) and a core positioning groove B (103) are respectively formed at the upper and lower ends of the first water inlet pipe half cavity (101); Two second water inlet pipe half cavities (201) arranged side by side are formed on the second outer mold (20). A core positioning groove C (202) and a core positioning groove D (203) are respectively formed at the upper and lower ends of the second water inlet pipe half cavity (201); The lower ends of the core positioning groove B (103) and the core positioning groove D (203) are sealed; The upper end of the water inlet pipe core (30) is clamped between the core positioning groove A (102) and the core positioning groove C (202), and the lower end of the water inlet pipe core (30) is clamped between the core positioning groove B (103) and the core positioning groove D (203). The first water inlet pipe half cavity (101), the second water inlet pipe half cavity (201) and the water inlet pipe core (30) enclose a complete water inlet pipe cavity.

2. The improved water inlet pipe casting mold according to claim 1, characterized in that: A first half runner (104) and a first half runner cavity (105) are formed at the upper end of the first outer mold (10); A second half runner (204) and a second half runner cavity (205) are formed at the upper end of the second outer mold (20). Two feeding ports (206) are formed at the lower end of the second half runner cavity (205), and the two feeding ports (206) are respectively communicated with the upper ends of the corresponding second water inlet pipe half cavities (201); The upper end of the feeding port (206) is open; The feeding port (206) is enlarged.

3. An improved water inlet pipe casting mold according to claim 2, characterized in that: An outer expansion cavity (207) is formed at the upper end of the second half runner cavity (205).

4. An improved water inlet pipe casting mold according to claim 3, characterized in that: The outer expansion cavity (207) is arranged in a conical shape with a larger upper part and a smaller lower part; An air venting fine groove (208) is formed at the upper end of the outer expansion cavity (207).

5. An improved water inlet pipe casting mold according to claim 1, characterized in that: A first positioning protrusion (106) and a first positioning groove (107) are formed on the first outer mold (10); A second positioning groove (209) matching with the first positioning protrusion (106) and a second positioning protrusion (210) matching with the first positioning groove (107) are formed on the second outer mold (20).

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