A precision crankshaft casting mold with heat exchange effect

Abstract

The utility model relates to the technical field of casting molds, and specifically discloses a precision crankshaft casting mold with a heat exchange effect, comprising a lower mold, a casting cavity is provided at the upper end of the lower mold, a heat exchange mechanism for cooling the mold is fixed on the lower surface of the lower mold, and a flow cavity is provided inside the lower mold; the heat exchange mechanism comprises a water storage tank, the water storage tank is fixed to the lower surface of the lower mold by bolts, a delivery pump is fixed inside the water storage tank by bolts, the output end of the delivery pump is connected to a delivery pipe, the end of the delivery pipe is connected to a heat sink, and one end of the heat sink is connected to a plurality of heat pipes. Through the heat exchange mechanism, the cooling water can be recycled, and when the cooling water is circulated, the water impeller drives the transmission rod to rotate, and then drives the wind wheel to rotate, blowing air to cool the heat pipe, so as to avoid the cooling water temperature being too high and affecting the subsequent heat exchange effect.

Description

Technical Field

[0001] The utility model relates to the technical field of casting molds, in particular to a precision crankshaft casting mold with heat exchange effect. Background Art

[0002] Precision crankshaft casting molds are designed to meet the needs of high-precision, high-quality crankshaft casting. In order to obtain the structural shape of the crankshaft, the crankshaft casting mold is made of other easily moldable materials in advance to form the structural shape of the part, and then the mold is placed in the sand mold, so that a cavity with the same size as the crankshaft structure is formed in the sand mold, and then a flowing liquid is poured into the cavity. After the liquid cools and solidifies, it can form a part with the same shape and structure as the mold.

[0003] When the existing crankshaft casting mold is used, it is difficult to remove the internal model and the cooling and solidification time is long;

[0004] The existing patent (publication number: CN219425635U) discloses a crankshaft casting mold, which includes an outer body device, a cooling device and a pouring device. The outer body device includes a fixing frame, a placement groove, a lifting groove, a water inlet hole and a water outlet hole. It is die-cast through the mold plate at the lower end of the lifting plate. The condensate enters the water pipe through the water inlet hole to accelerate the cooling and solidification of the mold. Compared with the traditional crankshaft casting mold, it can avoid the uneven pouring of raw materials resulting in poor quality of the cast product and accelerate the solidification of the mold.

[0005] In view of the above problems, although the solution provided by the existing patent enters the water pipe through the water inlet hole to accelerate the cooling and solidification of the mold, it is unable to recycle the cooling water, resulting in the cooling water being directly discharged after carrying the heat, which is too wasteful. Summary of the invention

[0006] The purpose of the utility model is to provide a precision crankshaft casting mold with heat exchange effect, which can circulate cooling water. When the cooling water is circulated, the water impeller drives the transmission rod to rotate, and then drives the wind wheel to rotate, blowing air to cool the heat pipe, avoiding the cooling water temperature being too high and affecting the subsequent heat exchange effect, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a precision crankshaft casting mold with heat exchange effect, comprising a lower mold, the upper end of which is provided with a casting cavity, a heat exchange mechanism for cooling the mold is fixed on the lower surface of the lower mold, and a flow cavity is provided inside the lower mold;

[0008] The heat exchange mechanism includes a water tank, which is fixed to the lower surface of the lower mold by bolts. A delivery pump is fixed to the inside of the water tank by bolts. The output end of the delivery pump is connected to a delivery pipe, the end of the delivery pipe is connected to a heat sink, one end of the heat sink is connected to a plurality of heat pipes, and the end of the heat pipe is connected to a connecting piece.

[0009] Preferably, one end of the connecting piece is connected to a connecting pipe interconnected with the flow cavity, and the outer surface of the lower mold is connected to a return pipe interconnected with the water storage tank.

[0010] Preferably, a water impeller is installed inside the heat sink, a transmission rod is fixed to the side wall of the water impeller, and the transmission rod is rotatably connected to the heat sink via a bearing.

[0011] Preferably, a wind wheel is fixed to the end of the transmission rod.

[0012] Preferably, an upper mold is provided above the lower mold, and the upper surface of the upper mold is connected to a feed pipe.

[0013] Preferably, four positioning blocks are symmetrically fixed to the upper surface of the lower mold, and the four positioning blocks match the upper mold.

[0014] Preferably, four limiting rods are fixed to the lower end of the upper mold, and the lower parts of the four limiting rods are plugged and connected with limiting holes provided on the lower mold.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The heat exchange mechanism is set up to circulate the cooling water. When the cooling water is circulating, the water impeller drives the transmission rod to rotate, and then drives the wind wheel to rotate, blowing air to cool the heat pipe, so as to avoid the cooling water temperature being too high and affecting the subsequent heat exchange effect;

[0017] 2. The positioning block provided can play a limiting role in cooperation with the limiting hole and the limiting rod, thereby reducing the offset that occurs when the upper mold and the lower mold are assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 It is a half-section structural schematic diagram of the lower mold of the utility model;

[0021] Figure 3 For the utility model Figure 1 A magnified view of middle;

[0022] Figure 4 It is a schematic diagram of the half-section structure of the heat sink of the utility model.

[0023] Description of reference numerals:

[0024] 1. Lower mold; 2. Casting cavity; 3. Water storage tank; 31. Delivery pump; 32. Delivery pipe; 33. Heat sink; 34. Heat sink; 35. Connector; 36. Connecting pipe; 37. Reflux pipe; 38. Water impeller; 39. Transmission rod; 310. Wind wheel; 4. Upper mold; 5. Feed pipe; 6. Positioning block; 7. Limit hole; 8. Limit rod; 9. Flow cavity. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a technical solution:

[0027] See also Figures 1 to 4 A precision crankshaft casting mold with heat exchange effect, comprising a lower mold 1, a casting cavity 2 is opened at the upper end of the lower mold 1, a heat exchange mechanism for cooling the mold is fixed on the lower surface of the lower mold 1, and a flow cavity 9 is opened inside the lower mold 1;

[0028] The heat exchange mechanism includes a water tank 3, which is fixed to the lower surface of the lower mold 1 by bolts. A delivery pump 31 is fixed to the inside of the water tank 3 by bolts. The output end of the delivery pump 31 is connected to a delivery pipe 32, and the end of the delivery pipe 32 is connected to a heat sink 33. One end of the heat sink 33 is connected to a plurality of heat pipes 34, and the end of the heat pipe 34 is connected to a connecting member 35. One end of the connecting member 35 is connected to a connecting pipe 36 that is interconnected with the flow chamber 9. The outer surface of the lower mold 1 is connected to a return pipe 37 that is interconnected with the water tank 3. A water impeller 38 is installed inside the heat sink 33, and a transmission rod 39 is fixed to the side wall of the water impeller 38. The transmission rod 39 is rotatably connected to the heat sink 33 through a bearing, and a wind wheel 310 is fixed to the end of the transmission rod 39.

[0029] By adopting the above technical solution, before using the precision crankshaft casting mold with heat exchange effect, the lower mold 1 is first placed in a suitable position, and the stored cooling water can be pumped out through the delivery pump 31 set in the water storage tank 3, and sent to the heat sink 33 through the delivery pipe 32, and then flow into the connecting piece 35 through the heat dissipation pipe 34, and enter the flow cavity 9 opened in the lower mold 1 through the connecting pipe 36, so as to exchange heat with the raw material added in the lower mold 1, so as to achieve the effect of rapid cooling of the raw material, and the raw material is continuously flowed into the flow cavity. The cooling liquid in 9, with the cooperation of the return pipe 37, allows the cooling water to flow into the water storage tank 3 again, and then the cooling water is recycled to improve practicality. When the cooling water is circulating, since the heat sink 33 is provided with a water impeller 38, when the cooling water flows into the heat sink 33, it will push the water impeller 38 to rotate, so that the water impeller 38 drives the transmission rod 39 to rotate, and then drives the wind wheel 310 to rotate, blowing air to cool the heat pipe 34, so as to avoid the cooling water temperature being too high and affecting the subsequent heat exchange effect.

[0030] Specifically, Figure 1-Figure 4 As shown, an upper mold 4 is provided above the lower mold 1, and a feed pipe 5 is connected to the upper surface of the upper mold 4. Four positioning blocks 6 are symmetrically fixed to the upper surface of the lower mold 1, and the four positioning blocks 6 match the upper mold 4. Four limiting rods 8 are fixed to the lower end of the upper mold 4, and the lower parts of the four limiting rods 8 are all plugged and connected with limiting holes 7 opened on the lower mold 1.

[0031] By adopting the above technical solution, the upper mold 4 and the lower mold 1 are connected. The positioning block 6 is provided to play a positioning role. With the cooperation of the limiting hole 7 and the limiting rod 8, it can play a limiting role, thereby reducing the offset of the upper mold 4 and the lower mold 1 during assembly. Then, the casting raw material can be added to the casting cavity 2 through the feeding pipe 5 on the upper mold 4 to perform casting.

[0032] Working principle: The upper mold 4 and the lower mold 1 are connected, and the positioning block 6 is provided to play a positioning role. With the cooperation of the limiting hole 7 and the limiting rod 8, the deviation of the upper mold 4 and the lower mold 1 during assembly is reduced. The casting raw material can be added to the casting cavity 2 through the feed pipe 5 on the upper mold 4. The delivery pump 31 provided in the water storage tank 3 extracts the stored cooling water, and delivers it to the heat sink 33 through the delivery pipe 32. Then, it flows into the connecting piece 35 through the heat sink 34, and enters the lower mold through the connecting pipe 36. The flow cavity 9 opened in the tool 1 can exchange heat with the raw materials added in the lower mold 1 to achieve the effect of rapid cooling of the raw materials. The cooling liquid continuously flows into the flow cavity 9, and with the cooperation of the reflux pipe 37, the cooling water can flow into the water storage tank 3 again. Since a water impeller 38 is provided in the heat sink 33, when the cooling water flows into the heat sink 33, it will push the water impeller 38 to rotate, so that the water impeller 38 drives the transmission rod 39 to rotate, and then drives the wind wheel 310 to rotate, and blows air to cool the heat sink 34.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A precision crankshaft casting mold with heat exchange effect, comprising a lower mold (1), characterized in that: A casting cavity (2) is provided at the upper end of the lower mold (1), a heat exchange mechanism for cooling the mold is fixed on the lower surface of the lower mold (1), and a flow cavity (9) is provided inside the lower mold (1); The heat exchange mechanism comprises a water storage tank (3), the water storage tank (3) is fixed to the lower surface of the lower mold (1) by bolts, a delivery pump (31) is fixed inside the water storage tank (3) by bolts, the output end of the delivery pump (31) is connected to a delivery pipe (32), the end of the delivery pipe (32) is connected to a heat sink (33), one end of the heat sink (33) is connected to a plurality of heat dissipation pipes (34), and the end of the heat dissipation pipe (34) is connected to a connecting piece (35).

2. The precision crankshaft casting mold with heat exchange effect according to claim 1, characterized in that: One end of the connecting piece (35) is connected to a connecting pipe (36) which is interconnected with the flow chamber (9), and the outer surface of the lower mold (1) is connected to a return pipe (37) which is interconnected with the water storage tank (3).

3. The precision crankshaft casting mold with heat exchange effect according to claim 2, characterized in that: A water impeller (38) is installed inside the heat sink (33), a transmission rod (39) is fixed to the side wall of the water impeller (38), and the transmission rod (39) is rotatably connected to the heat sink (33) via a bearing.

4. The precision crankshaft casting mold with heat exchange effect according to claim 3, characterized in that: A wind wheel (310) is fixed to the end of the transmission rod (39).

5. The precision crankshaft casting mold with heat exchange effect according to claim 1, characterized in that: An upper mold (4) is provided above the lower mold (1), and the upper surface of the upper mold (4) is connected to a feed pipe (5).

6. The precision crankshaft casting mold with heat exchange effect according to claim 5, characterized in that: Four positioning blocks (6) are symmetrically fixed on the upper surface of the lower mold (1), and the four positioning blocks (6) match the upper mold (4).

7. The precision crankshaft casting mold with heat exchange effect according to claim 6, characterized in that: Four limiting rods (8) are fixed to the lower end of the upper mold (4), and limiting holes (7) provided on the lower mold (1) are plugged and connected to the bottoms of the four limiting rods (8).

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