A flywheel housing casting mold

Abstract

The present invention relates to the field of casting molds, and in particular to a flywheel housing casting mold, comprising an upper mold and a lower mold, wherein the upper mold comprises an upper outer mold and an upper inner mold, wherein an upper clamping part and an upper heat dissipation part with adjustable positions are installed inside the upper inner mold for heat dissipation inside the workpiece, and the lower mold comprises a lower outer mold and a lower inner mold, wherein an lower clamping part and a lower heat dissipation part with adjustable positions are installed outside the lower inner mold for heat dissipation outside the workpiece. Through the heat dissipation mechanism with adjustable positions inside and outside the workpiece, targeted local heat dissipation and cooling can be achieved for locations with thicker wall thicknesses, thereby achieving the effect of simultaneous cooling and solidification of locations with different wall thicknesses, thereby reducing casting defects such as deformation and cracking of the flywheel housing workpiece.

Description

Technical Field

[0001] The invention relates to the field of casting moulds, in particular to a flywheel housing casting mould. Background Art

[0002] The flywheel housing is an important basic part of the engine. Its function is to connect the engine and the transmission, bear part of the weight of the engine and the transmission, protect the clutch and the flywheel, and is also a supporting component of the engine. The flywheel housing has a complex structure, a basin-like shape, thin walls, and a suspended positioning surface on the bottom of the basin. The workpiece has poor rigidity and is easily deformed during processing, making it a difficult-to-process part.

[0003] At present, the processing of flywheel housing generally adopts the integral casting method to achieve integrated processing. However, since the flywheel housing is a thin-walled part and its specific external positions have reserved processing allowances for structures such as positioning holes, mounting holes, and positioning columns, the wall thickness of the blank during casting fluctuates greatly.

[0004] As we all know, in the casting process of metal parts, especially thin-walled parts, when the thickness of the workpiece blank at different positions is very different, it is easy to cause deformation and cracking of the workpiece. The deformation and cracking positions generally appear at the positions with larger wall thickness transition. The reason is: the cooling rate of the thicker wall position is slower, while the cooling rate of the thinner wall position is faster, resulting in a large time difference in cooling and solidification at the transition position, thereby generating larger internal stress, deformation or cracking.

[0005] At present, the commonly used technical means is to open vents at locations with thicker wall thicknesses to increase the heat dissipation rate at the corresponding locations, so as to achieve simultaneous cooling of locations with different wall thicknesses, thereby avoiding cracking and deformation at transition locations. However, in actual application, the heat dissipation effect of this method is limited and cannot completely solve the deformation and cracking problems at transition locations. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a flywheel housing casting mold, which adopts a hollow design, and at the same time, heat dissipation mechanisms with adjustable positions are added on the inner and outer sides to dissipate heat at locations with thicker wall thicknesses, thereby solving the deformation and cracking problems caused by asynchronous cooling at locations with different wall thicknesses of the workpiece, which is specifically achieved through the following technical solutions:

[0007] A flywheel housing casting mold includes an upper mold and a lower mold, the upper mold includes an upper outer mold and an upper inner mold, the upper outer mold is provided with a plurality of positioning holes, the upper outer mold is coaxially provided with a first circular hole, the upper inner mold is installed in the first circular hole, the upper outer mold is fixedly connected to an upper guide ring, the upper guide ring is provided with an upper clamping part, the upper clamping part is provided with an upper heat dissipation part, the upper heat dissipation part is arranged on the inner side of the upper inner mold, and is used for cooling the inside of the flywheel housing workpiece.

[0008] The lower mold comprises a lower outer mold and a lower inner mold, a plurality of positioning columns corresponding to the positioning holes are fixed on the lower outer mold, a second circular hole is coaxially opened on the lower outer mold, the lower inner mold is installed in the second circular hole, and the lower inner mold and the upper inner mold are combined to form a cavity of the flywheel housing workpiece, the lower outer mold is fixedly connected to the lower guide ring, a lower clamping part is installed on the lower guide ring, a lower heat dissipation part is installed on the lower clamping part, and the lower heat dissipation part is arranged on the outer side of the lower outer mold for cooling the outside of the flywheel housing workpiece.

[0009] Preferably, the flywheel housing casting mold also includes a water delivery part, which includes a water inlet pipe, which is fixedly connected to a water inlet box, on which a plurality of pipe valves are installed, and a return water tank is provided on the outer side of the middle part of the water inlet box, which is fixedly connected to the return water pipe.

[0010] The first group of pipe valves is connected to the water inlet end of the upper heat dissipation part, the second group of pipe valves is connected to the water inlet end of the lower heat dissipation part, and the water outlet ends of the upper heat dissipation part and the lower heat dissipation part are respectively connected to the return water tank.

[0011] Preferably, the upper clamping part includes a first clamping block, the first clamping block overlaps the upper guide ring, the first clamping block is rotationally connected to the first screw, the first screw is threadedly connected to the second clamping block, and the second clamping block can overlap the upper guide ring.

[0012] The second clamping block is fixed to the first sliding block, the first sliding block is arranged in the first guide rail, the first guide rail is opened on the first clamping block, and the upper heat dissipation part is installed on the first clamping block.

[0013] Preferably, the lower clamping part includes a third clamping block, the third clamping block can overlap the lower guide ring, the third clamping block is rotationally connected to the second screw rod, the second screw rod is threadedly connected to the fourth clamping block, and the fourth clamping block overlaps the lower guide ring.

[0014] The fourth clamping block is fixed to the second sliding block, the second sliding block is arranged in the second guide rail, the second guide rail is opened on the third clamping block, and the lower heat dissipation part is installed on the third clamping block.

[0015] Preferably, the upper heat dissipation part includes a first heat dissipation tube, a plurality of the first heat dissipation tubes are fixedly connected to a first heat dissipation plate, and the first heat dissipation plate is mounted on the first clamping block.

[0016] Preferably, the lower heat dissipation part includes a second heat dissipation tube, a plurality of the second heat dissipation tubes are fixedly connected to a second heat dissipation plate, and the second heat dissipation plate is mounted on a third clamping block.

[0017] Preferably, the pipe valve includes a pipe, a first end of the pipe is fixedly connected to the water inlet tank, an inner surface of the pipe is fixedly connected to a ring, the ring is fixedly connected to the first end of a spring, the second end of the spring is fixedly connected to a cut-off ball, the cut-off ball can be sealingly overlapped with the first end of the threaded pipe, and the first end of the threaded pipe is fixedly connected and communicated with the second end of the pipe.

[0018] Preferably, the second end of the threaded tube can be threadedly connected to the threaded sleeve, the threaded sleeve is rotatably installed on one side of the guide tube, the guide tube can be sealed in the threaded tube, the first end of the guide tube can overlap the intercepting ball, and a plurality of through holes are opened on the side of the first end of the guide tube.

[0019] The second end of the flow guide tube is connected to a diverter box, and the diverter box is connected to the first heat dissipation tube or the second heat dissipation tube respectively.

[0020] Preferably, the diameter of the intercepting ball is smaller than the inner diameter of the pipe, and the diameter of the intercepting ball is larger than the inner diameter of the threaded pipe.

[0021] After adopting the above technical solution, the beneficial effects of the present invention are:

[0022] 1. The design method of hollowing out the inside of the upper inner mold and the outside of the lower inner mold is adopted to ensure that the workpiece inside the cavity can dissipate heat faster and reduce the molding cooling time of the workpiece;

[0023] 2. A movably mounted heat dissipation part is arranged inside the upper inner mold and outside the lower inner mold. The position of the heat dissipation part can be adjusted according to the structure of the cast workpiece so that it corresponds to the position where the workpiece is thicker, thereby accelerating the cooling speed of the corresponding position and achieving the effect of synchronous cooling of the workpiece;

[0024] 3. The method of synchronous water supply of several groups of heat dissipation parts can meet the simultaneous installation and use of several groups of heat dissipation parts, and the specific positions of the heat dissipation parts can be combined and set at will, thereby meeting the casting and use requirements of flywheel housing workpieces with different structures;

[0025] 4. The structure of the heat dissipation part is arranged to fit the structural shape of the inside of the upper inner mold and the outside of the lower inner mold, so as to facilitate the transfer of heat, increase the surface area of ​​the heat dissipation part and improve the efficiency of heat transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A three-dimensional view of the flywheel housing casting mold;

[0028] Figure 2 It is a three-dimensional diagram of a flywheel housing casting mold after partial sectioning;

[0029] Figure 3 for Figure 2 Schematic diagram of disassembly of some parts;

[0030] Figure 4 It is a schematic diagram of the installation positions of the upper heat dissipation part, the lower heat dissipation part and the water delivery part;

[0031] Figure 5 is a cross-sectional view of the upper clamping portion;

[0032] Figure 6 is a cross-sectional view of the lower clamping portion;

[0033] Figure 7 is a cross-sectional view of the water delivery portion;

[0034] Figure 8 It is a schematic diagram of the pipe valve structure in an unconnected state;

[0035] Fig. 9 Schematic diagram of the pipe valve structure in the connected state.

[0036] Description of reference numerals:

[0037] 100-upper die, 110-upper outer die, 111-positioning hole, 112-upper guide ring, 120-upper inner die;

[0038] 130-upper clamping part, 131-first clamping block, 132-first screw rod, 133-second clamping block, 134-first sliding block, 135-first guide rail;

[0039] 140 - upper heat dissipation part, 141 - first heat dissipation pipe, 142 - first heat dissipation plate, 143 - first heat dissipation fin;

[0040] 200-lower die, 210-lower outer die, 211-positioning column, 212-lower guide ring, 220-lower inner die;

[0041] 230-lower clamping part, 231-third clamping block, 232-second screw rod, 233-fourth clamping block, 234-second slider, 235-second guide rail;

[0042] 240 - lower heat dissipation part, 241 - second heat dissipation pipe, 242 - second heat dissipation plate, 243 - second heat dissipation fin;

[0043] 300-water delivery part, 311-water inlet pipe, 312-water inlet tank, 313-water return tank, 314-water return pipe, 320-pipe valve, 321-pipe, 322-ring, 323-spring, 324-intercepting ball, 325-threaded pipe;

[0044] 400-connecting part, 401-threaded sleeve, 402-flow guide tube, 403-through hole, 404-diverter box;

[0045] 500-flywheel housing blank. DETAILED DESCRIPTION

[0046] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0047] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0048] An embodiment of the present invention provides a flywheel housing casting mold, which adopts a hollow design to reduce the wall thickness of the cavity, thereby facilitating the heat dissipation of the workpiece. In addition, a position-adjustable heat dissipation part is used to perform appropriate position adjustment according to the structure of different workpieces, so as to achieve rapid cooling of the thicker wall position, so as to achieve the effect of synchronous cooling of the entire workpiece, thereby reducing the occurrence of casting defects such as deformation and cracking of the flywheel housing workpiece.

[0049] See also Figure 1 , 23. A flywheel housing casting mold includes an upper mold 100 and a lower mold 200. The upper mold 100 includes an upper outer mold 110 and an upper inner mold 120. A first circular hole is opened at the center of the upper outer mold 110, and the upper inner mold 120 is installed in the first circular hole.

[0050] The lower mold 200 includes a lower outer mold 210 and a lower inner mold 220. A second circular hole is opened in the center of the lower outer mold 210, and the lower inner mold 220 is installed in the second circular hole. The upper surface of the lower inner mold 220 and the lower surface of the upper inner mold 120 are molded together to form a cavity of the flywheel housing workpiece.

[0051] The upper outer mold 110 is provided with a plurality of positioning holes 111 along the height direction, and the first ends of a plurality of positioning columns 211 are fixed to the upper surface of the lower outer mold 210. The positioning columns 211 correspond to the positioning holes 111 one by one and are coaxially arranged. The positioning columns 211 can be arranged in the positioning holes 111. Through the configuration relationship between the positioning holes 111 and the positioning columns 211, the upper mold 100 and the lower mold 200 can be smoothly molded, thereby ensuring that the upper inner mold 120 and the lower inner mold 220 form a cavity of the flywheel housing workpiece, thereby completing the casting of the flywheel housing workpiece.

[0052] The inner surface of the first circular hole is coaxially fixed with the upper guide ring 112 . The upper guide ring 112 is located above the upper inner mold 120 . An upper clamping portion 130 is installed on the upper guide ring 112 .

[0053] like Figure 5 As shown, the upper clamping portion 130 includes a first clamping block 131, and the lower surface of the first clamping block 131 close to the upper guide ring 112 overlaps the upper surface of the upper guide ring 112. A first screw 132 is rotatably installed on the first clamping block 131. The first screw 132 is threadedly connected to the second clamping block 133. The upper surface of the second clamping block 133 can overlap the lower surface of the upper guide ring 112. The second clamping block 133 is fixedly connected to the first slider 134. The first slider 134 is arranged in the first guide rail 135 and moves along it. The first guide rail 135 is opened on the first clamping block 131 along the height direction. The upper heat dissipation portion 140 is installed on the bottom of the first clamping block 131 away from the upper guide ring 112.

[0054] When the first screw 132 is rotated to drive the second clamp block 133 to move downward, the first clamp block 131 and the second clamp block 133 move away from each other. At this time, the position of the upper clamp part 130 can be adjusted. When the first screw 132 is rotated to drive the second clamp block 133 to move upward, the first clamp block 131 and the second clamp block 133 approach each other, thereby clamping the upper guide ring 112. At this time, the upper clamp part 130 is stationary relative to the upper guide ring 112. Therefore, by adjusting the tightness of the first screw 132, the position of the upper clamp part 130 can be adjusted at will.

[0055] In addition, the cross-sectional shape of the upper guide ring 112 is a dovetail shape. The first clamp block 131 and the second clamp block 133 are located close to one side of the upper guide ring 112 , and the cross-sectional shape of the inner surface thereof is a dovetail shape that matches the cross-sectional shape of the upper guide ring 112 .

[0056] The cross-sectional shape of the first slider 134 is T-shaped, and the cross-sectional shape of the inner surface of the first guide rail 135 is T-shaped matching the cross-sectional shape of the first slider 134 , thereby limiting the first slider 134 and the second clamp 133 to move up and down only along the length direction of the first guide rail 135 .

[0057] like Figure 4 As shown, the upper heat dissipation portion 140 includes a plurality of first heat dissipation tubes 141, which are fan-shaped and arranged around the axis of the upper inner mold 120, and the plurality of first heat dissipation tubes 141 are fixedly connected by a first heat dissipation plate 142, and the top of the first heat dissipation plate 142 is fixedly installed with the bottom of the first clamp 131.

[0058] The first heat sink 142 has a C-shaped profile. A plurality of first heat sink fins 143 are evenly fixed on both inner and outer sides of the first heat sink 142 . The first heat sink fins 143 are arranged perpendicular to the length direction of the first heat sink 142 .

[0059] Several first heat dissipation tubes 141 increase the water flow rate of the upper heat dissipation part 140, so that its heat absorption capacity per unit time is stronger and the cooling effect is better. In addition, the first heat dissipation plate 142 with a C-shaped structure makes the overall structure of the upper heat dissipation part 140 closer to the inner surface of the upper inner mold 120, so as to better perform heat exchange. The evenly distributed first heat dissipation fins 143 increase the surface area of ​​the upper heat dissipation part 140, so that it can achieve heat exchange more efficiently and ensure rapid cooling of local locations.

[0060] The inner surface of the second circular hole is coaxially fixed with the lower guide ring 212 . The lower guide ring 212 is located below the lower inner mold 220 . The lower clamping portion 230 is installed on the lower guide ring 212 .

[0061] like Figure 6 As shown, the lower clamping portion 230 includes a third clamping block 231, and the upper surface of the third clamping block 231 close to the lower guide ring 212 can overlap with the lower surface of the lower guide ring 212, and the second screw 232 is rotatably installed on the third clamping block 231, and the second screw 232 is threadedly connected to the fourth clamping block 233, and the lower surface of the fourth clamping block 233 overlaps with the upper surface of the lower guide ring 212, and the fourth clamping block 233 is fixedly connected to the second slider 234, and the second slider 234 is arranged in the second guide rail 235 and moves along it. The second guide rail 235 is opened on the third clamping block 231 along the height direction, and the lower heat dissipation portion 240 is installed on the top of the third clamping block 231 away from the lower guide ring 212.

[0062] When the second screw 232 is rotated to drive the fourth clamp 233 to move upward, the third clamp 231 and the fourth clamp 233 move away from each other. At this time, the position of the lower clamp 230 can be adjusted. When the second screw 232 is rotated to drive the fourth clamp 233 to move downward, the third clamp 231 and the fourth clamp 233 approach each other, thereby clamping the lower guide ring 212. At this time, the lower clamp 230 is stationary relative to the lower guide ring 212. Therefore, by adjusting the tightness of the second screw 232, the position of the lower clamp 230 and the lower heat dissipation part 240 can be adjusted at will, thereby meeting the local heat dissipation requirements of the lower heat dissipation part 240 for the workpiece.

[0063] In addition, the cross-sectional shape of the lower guide ring 212 is a dovetail shape, and the structure formed by the third clamping block 231 and the fourth clamping block 233 on one side close to the lower guide ring 212 has an inner surface with a dovetail shape matching the cross-sectional shape of the lower guide ring 212 .

[0064] The cross-sectional shape of the second slider 234 is T-shaped, and the cross-sectional shape of the inner surface of the second guide rail 235 is T-shaped matching the cross-sectional shape of the second slider 234 , thereby limiting the second slider 234 and the fourth clamp 233 to move up and down only along the length direction of the second guide rail 235 .

[0065] like Figure 4 As shown, the lower heat dissipation part 240 includes a plurality of second heat dissipation tubes 241, which are arranged in a fan shape around the axis of the lower inner mold 220, and the plurality of second heat dissipation tubes 241 are fixedly connected by a second heat dissipation plate 242, and the bottom of the second heat dissipation plate 242 is fixedly installed with the top of the third clamp 231.

[0066] The second heat sink 242 has an L-shaped profile with two inner and outer layers. A plurality of second heat sink fins 243 are evenly fixed on both inner and outer sides of the second heat sink 242 . The second heat sink fins 243 are arranged perpendicular to the length direction of the second heat sink 242 .

[0067] Several second heat dissipation tubes 241 increase the water flow rate of the lower heat dissipation part 240, so that its heat absorption capacity per unit time is stronger and the cooling effect is better. In addition, the second heat dissipation plate 242 with an L-shaped structure with a double layer inside and outside, the function of the inner L-shaped structure is to fit the outer surface of the lower inner mold 220, so as to better exchange heat, and the function of the outer L-shaped structure is on the one hand to achieve the reflux of cooling water, and on the other hand to increase the surface area of ​​the lower heat dissipation part 240. The evenly distributed second heat sinks 243 also increase the surface area of ​​the lower heat dissipation part 240, so that it can achieve heat exchange more efficiently and ensure rapid cooling of local locations.

[0068] In summary, if Figure 3As shown, since the flywheel housing blank 500 is shaped like a basin, the interior of the upper inner mold 120 is designed as a basin-shaped structure while ensuring its molding, which is beneficial to the heat dissipation inside the workpiece on the one hand, and convenient for the installation of the upper clamping part 130 and the upper heat dissipation part 140 on the other hand.

[0069] In addition, the upper clamping portion 130 is installed on the upper guide ring 112. Due to the annular structure of the upper guide ring 112, the upper clamping portion 130 can be adjusted according to actual needs to ensure that the upper heat dissipation portion 140 is configured exactly at the position where the workpiece wall is thicker.

[0070] In addition, an annular gap is designed between the lower outer mold 210 and the lower inner mold 220, and a lower heat dissipation portion 240 is arranged in the gap. Similarly, the position of the lower heat dissipation portion 240 can be adjusted according to the configuration relationship between the lower clamping portion 230 and the lower guide ring 212, so that the lower heat dissipation portion 240 corresponds to the position where the wall thickness of the workpiece is thicker.

[0071] Of course, the structure composed of the upper clamping part 130 and the upper heat dissipation part 140 and the structure composed of the lower clamping part 230 and the lower heat dissipation part 240 can be added in several groups according to the actual use requirements of the workpiece, and can be arranged continuously or at intervals to achieve the effect of uniform cooling of the cast workpiece.

[0072] See also Figure 2 , 4 7. The cooling water of the upper heat dissipation part 140 and the lower heat dissipation part 240 is transported through the water delivery part 300. The water delivery part 300 includes a water inlet pipe 311. The first end of the water inlet pipe 311 is connected to and communicated with the tap water pipe, and the second end of the water inlet pipe 311 is connected to and communicated with the water inlet tank 312. The upper and lower ends of the water inlet tank 312 are respectively and evenly installed with a plurality of pipe valves 320 along the circumference thereof. The water inlet ends of the first heat dissipation pipe 141 and the second heat dissipation pipe 241 are respectively communicated with different pipe valves 320. The middle part of the water inlet tank 312 is fixedly connected to the return water tank 313 and separated from each other. The return water tank 313 is respectively communicated with the water outlets of the first heat dissipation pipe 141 and the second heat dissipation pipe 241. The side of the return water tank 313 is fixedly connected to and communicated with the first end of the return water pipe 314, and the second end of the return water pipe 314 is connected to and communicated with the drain pipe.

[0073] The cooling water enters the water inlet tank 312 through the water inlet pipe 311, and is supplied to the water inlet ends of the upper heat dissipation part 140 and the lower heat dissipation part 240 respectively through two sets of pipe valves 320. After the cooling water circulates and absorbs heat in the upper heat dissipation part 140 and the lower heat dissipation part 240, it flows back to the return water tank 313 and is finally discharged to the outside through the return water pipe 314.

[0074] Through the above-mentioned method, the cooling water supply circulation of the upper heat dissipation part 140 and the lower heat dissipation part 240 can be realized at the same time, thereby meeting the heat dissipation demand of the workpiece.

[0075] like Figure 8 As shown, the pipe valve 320 includes a pipe 321, a first end of the pipe 321 is fixedly connected to and communicated with the water inlet tank 312, an inner surface of the pipe 321 is fixedly connected to a ring 322, the ring 322 is fixedly connected to a first end of a spring 323, a second end of the spring 323 is fixedly connected to a shutoff ball 324, the shutoff ball 324 can be sealingly overlapped with a first end of a threaded pipe 325, and the first end of the threaded pipe 325 is fixedly connected to and communicated with the second end of the pipe 321.

[0076] The spring 323 is always in a compressed state. Under the elastic force of the spring 323, the shut-off ball 324 presses against the connection between the threaded tube 325 and the pipe 321. At this time, the cooling water cannot flow from the pipe 321 to the threaded tube 325, thereby ensuring that after the water inlet pipe 311 is connected to the tap water pipe, under normal conditions, the cooling water cannot flow out from the pipe valve 320 connected to the water inlet tank 312, thereby ensuring that the pipe valve 320 that is not in use will not cause overflow of cooling water.

[0077] like Figure 4 and Fig. 9 As shown, the connecting portion 400 includes a threaded sleeve 401, which can be threadedly connected to the threaded pipe 325, and the threaded sleeve 401 is rotatably installed on the outer surface of one side of the guide pipe 402. The first end of the guide pipe 402 can be sealed and configured in the threaded pipe 325. The first end of the guide pipe 402 can overlap with the outer surface of the intercepting ball 324, and the side surface of the first end of the guide pipe 402 is evenly provided with a plurality of through holes 403 along its circumference, and the through holes 403 can connect the guide pipe 402 with the pipeline 321.

[0078] The second end of the flow guide pipe 402 is connected to and communicated with the diverter box 404 , and the diverter box 404 is connected to and communicated with the first heat dissipation pipe 141 or the second heat dissipation pipe 241 .

[0079] The distance from the first end of the guide tube 402 to the rotational installation position of the threaded sleeve 401 is greater than the length of the threaded tube 325. When the threaded sleeve 401 is threadedly connected with the threaded tube 325, the first end of the guide tube 402 pushes away the intercepting ball 324 and penetrates into the pipe 321, thereby smoothly connecting the pipe 321 with the guide tube 402.

[0080] Of course, the second end of the flow guide tube 402 can be connected to the diverter box 404 through a hose, so as to facilitate the free change of the positions of the upper heat dissipation part 140 and the lower heat dissipation part 240.

[0081] When the connecting part 400 is connected to the pipe valve 320 installed on the water inlet tank 312, the first end of the guide pipe 402 is docked in the threaded pipe 325 and pushed inward, and the threaded sleeve 401 is further screwed to realize the threaded connection between the threaded sleeve 401 and the threaded pipe 325. At this time, the first end of the guide pipe 402 pushes open the intercepting ball 324 and squeezes the spring 323. The intercepting ball 324 no longer blocks the threaded pipe 325, so that the cooling water in the pipeline 321 flows into the guide pipe 402 through the through hole 403, and is further diverted to the water inlet end of each first heat dissipation pipe 141 or the second heat dissipation pipe 241 through the diversion box 404. The water outlet end of each first heat dissipation pipe 141 or the second heat dissipation pipe 241 flows back to the pipe valve 320 installed on the return water tank 313 through the connecting part 400 again, completing the circulation of cooling water.

[0082] The inner diameter of the pipe 321 is 1.5 times the inner diameter of the threaded pipe 325 , the diameter of the intercepting ball 324 is smaller than the inner diameter of the pipe 321 , and the diameter of the intercepting ball 324 is larger than the inner diameter of the threaded pipe 325 , and the inner wall of the connection between the threaded pipe 325 and the pipe 321 is inclined.

[0083] The blocking of the threaded tube 325 by the intercepting ball 324 can be smoothly achieved in the above manner, and the inclined setting of the inner wall at the connection between the threaded tube 325 and the pipeline 321 can guide the intercepting ball 324 to the blocking position in the shortest time.

[0084] In summary, after the number and position of the upper heat dissipation parts 140 and the lower heat dissipation parts 240 are determined, the water inlet ends of several upper heat dissipation parts 140 and the lower heat dissipation parts 240 are connected to the pipe valve 320 installed on the water inlet tank 312 through the connecting part 400, and the water outlet ends of several upper heat dissipation parts 140 and the lower heat dissipation parts 240 are connected to the pipe valve 320 installed on the return water tank 313, so that the upper heat dissipation parts 140 and the lower heat dissipation parts 240 can cool the workpiece.

[0085] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flywheel housing casting mold, comprising an upper mold (100) and a lower mold (200), characterized in that: The upper die (100) comprises an upper outer die (110) and an upper inner die (120); a plurality of positioning holes (111) are provided on the upper outer die (110); a first circular hole is coaxially provided on the upper outer die (110); the upper inner die (120) is installed in the first circular hole; the upper outer die (110) is fixedly connected to an upper guide ring (112); an upper clamping portion (130) is installed on the upper guide ring (112); an upper heat dissipation portion (140) is installed on the upper clamping portion (130); the upper heat dissipation portion (140) is arranged on the inner side of the upper inner die (120) and is used for cooling the interior of a flywheel housing workpiece; The lower mold (200) comprises a lower outer mold (210) and a lower inner mold (220); a plurality of positioning columns (211) corresponding to the positioning holes (111) are fixed on the lower outer mold (210); a second circular hole is coaxially opened on the lower outer mold (210); the lower inner mold (220) is installed in the second circular hole; the lower inner mold (220) and the upper inner mold (120) are combined to form a cavity of a flywheel housing workpiece; the lower outer mold (210) is fixedly connected to a lower guide ring (212); a lower clamping portion (230) is installed on the lower guide ring (212); a lower heat dissipation portion (240) is installed on the lower clamping portion (230); the lower heat dissipation portion (240) is arranged on the outer side of the lower inner mold (220) and is used for cooling the outer side of the flywheel housing workpiece.

2. The flywheel housing casting mold according to claim 1, characterized in that: It also comprises a water delivery part (300), the water delivery part (300) comprising a water inlet pipe (311), the water inlet pipe (311) being fixedly connected to a water inlet box (312), a plurality of pipe valves (320) being installed on the water inlet box (312), a return water box (313) being provided on the outer side of the middle part of the water inlet box (312), the return water box (313) being fixedly connected to the return water pipe (314); The first group of pipe valves (320) are in communication with the water inlet end of the upper heat dissipation part (140), and the second group of pipe valves (320) are in communication with the water inlet end of the lower heat dissipation part (240). The water outlet ends of the upper heat dissipation part (140) and the lower heat dissipation part (240) are respectively in communication with the return water tank (313).

3. The flywheel housing casting mold according to claim 2, characterized in that: The upper clamping portion (130) comprises a first clamping block (131), the first clamping block (131) overlaps the upper guide ring (112), the first clamping block (131) is rotatably connected to a first screw rod (132), the first screw rod (132) is threadedly connected to a second clamping block (133), and the second clamping block (133) can overlap the upper guide ring (112); The second clamping block (133) is fixed to the first sliding block (134); the first sliding block (134) is arranged in a first guide rail (135); the first guide rail (135) is opened on the first clamping block (131); and the upper heat dissipation portion (140) is installed on the first clamping block (131).

4. The flywheel housing casting mold according to claim 2, characterized in that: The lower clamping portion (230) comprises a third clamping block (231), the third clamping block (231) can overlap the lower guide ring (212), the third clamping block (231) is rotatably connected to the second screw rod (232), the second screw rod (232) is threadedly connected to the fourth clamping block (233), and the fourth clamping block (233) overlaps the lower guide ring (212); The fourth clamping block (233) is fixed to the second sliding block (234); the second sliding block (234) is arranged in a second guide rail (235); the second guide rail (235) is opened on the third clamping block (231); and the lower heat dissipation portion (240) is installed on the third clamping block (231).

5. The flywheel housing casting mold according to claim 3, characterized in that: The upper heat dissipation part (140) comprises a first heat dissipation tube (141), a plurality of the first heat dissipation tubes (141) are fixedly connected to a first heat dissipation plate (142), and the first heat dissipation plate (142) is mounted on the first clamping block (131).

6. The flywheel housing casting mold according to claim 4, characterized in that: The lower heat dissipation portion (240) comprises a second heat dissipation tube (241), a plurality of the second heat dissipation tubes (241) are fixedly connected to a second heat dissipation plate (242), and the second heat dissipation plate (242) is mounted on the third clamping block (231).

7. The flywheel housing casting mold according to claim 2, characterized in that: The pipe valve (320) comprises a pipe (321), the first end of the pipe (321) being fixedly connected to the water inlet tank (312), the inner surface of the pipe (321) being fixedly connected to a circular ring (322), the circular ring (322) being fixedly connected to the first end of a spring (323), the second end of the spring (323) being fixedly connected to a shutoff ball (324), the shutoff ball (324) being able to seal and overlap with the first end of a threaded pipe (325), and the first end of the threaded pipe (325) being fixedly connected to and in communication with the second end of the pipe (321).

8. The flywheel housing casting mold according to claim 7, characterized in that: The second end of the threaded tube (325) can be threadedly connected to the threaded sleeve (401); the threaded sleeve (401) is rotatably mounted on one side of the flow guide tube (402); the flow guide tube (402) can be sealed and arranged in the threaded tube (325); the first end of the flow guide tube (402) can overlap the intercepting ball (324); a plurality of through holes (403) are provided on the side surface of the first end of the flow guide tube (402); the second end of the flow guide tube (402) is connected to a diversion box (404); and the diversion box (404) is respectively connected to the first heat dissipation tube (141) and the second heat dissipation tube (241).

9. The flywheel housing casting mold according to claim 7, characterized in that: The diameter of the intercepting ball (324) is smaller than the inner diameter of the pipe (321), and the diameter of the intercepting ball (324) is larger than the inner diameter of the threaded pipe (325).

10. The flywheel housing casting mold according to claim 5, characterized in that: The first heat dissipation plate (142) has a C-shaped profile, and a plurality of first heat dissipation fins (143) are evenly fixed on both inner and outer sides of the first heat dissipation plate (142).

Images