Low-pressure casting mold for rear auxiliary frame

Abstract

The utility model discloses a rear subframe low-pressure casting die, which relates to the technical field of rear subframe production and comprises a die holder, the top of the inner wall of the die holder is connected with an upper die, the bottom of the inner wall of the die holder is connected with a lower die, a groove body is arranged in the lower die, and a die pushing mechanism is arranged between the bottom and the top of the inner wall of the groove body. A driving mechanism is arranged at the bottom of the inner wall of the groove body and meshed with the mold pushing mechanism, under the action of the mold pushing mechanism and the driving mechanism, a rear auxiliary frame formed in a lower mold can be ejected out from four force bearing points, meanwhile, a hole groove can be blocked, and the mold pushing mechanism can be used for pushing out the rear auxiliary frame formed in the lower mold from the four force bearing points. The forming of molten metal in the mold core is not affected, a worker does not need to warp the rear auxiliary frame with the help of a crowbar in the process, the situation that the rear auxiliary frame is damaged is avoided, and therefore the demolding efficiency and the demolding quality of the worker are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rear subframe production technical field especially relates to rear subframe low pressure casting mould. BACKGROUND

[0002] Rear subframe is a main structure support piece of front vehicle body on the car, and low pressure casting refers to that the mould is generally placed above the sealed crucible, the compressed air is led into the crucible, the low pressure is caused on the surface of molten metal, the metal liquid is filled in the mould and the solidification is controlled, and the casting method is that the subframe is generally made through low pressure casting to connect the mould and the riser pipe, finally the metal liquid is transported into the die core on the mould and cooled to form the rear subframe.

[0003] At present, the traditional low pressure casting mould still has some deficiencies, the rear subframe can be taken out after forming in the die core, the formed rear subframe is clamped in the inside of the lower mould die core due to the insufficient clamping force of the upper mould, the rear subframe cannot be ejected from the die core due to the mould, manual tools are needed to lift the four corners of the rear subframe, and the demoulding work can be completed, the operation process is not convenient and is easy to cause damage to the rear subframe and the mould, therefore, the rear subframe low pressure casting mould is provided. UTILITY MODEL CONTENTS

[0004] The utility model discloses a rear subframe low pressure casting mould which is provided to solve the problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The rear subframe low pressure casting mould, including the mould seat, the top of the inner wall of the mould seat is connected with the upper mould, the bottom of the inner wall of the mould seat is connected with the lower mould, the inside of the lower mould is provided with the groove, the bottom of the inner wall and the inner wall top of the groove are provided with the mould pushing mechanism, the bottom of the inner wall of the groove is provided with the driving mechanism, and the driving mechanism is engaged with the mould pushing mechanism, the top of the lower mould is provided with the meandering groove, the bottom of the inner wall of the mould seat is provided with the cooling mechanism, and the cooling mechanism extends to the inside of the meandering groove.

[0007] Through the above technical scheme: the four hole grooves are no longer blocked by the reverse starting of the driving mechanism transmission push mold mechanism descending, the push mold mechanism is adjusted through the external switch, and finally the driving mechanism is started in the forward direction to drive the push mold mechanism to ascend and insert into the inside of the four hole grooves, the rear subframe is ejected from the mold core of the lower mold, water is added into the cooling mechanism and the cooling mechanism is started, and the cold water circulates through the cooling mechanism and continuously contacts the inner wall of the meandering groove, so that the inside of the meandering groove is continuously cooled, and the cooling efficiency of the metal liquid is improved.

[0008] The utility model further sets up, the push mold mechanism includes hollow screw rod, worm wheel and screw plate, the hollow screw rod rotation connects between the top and bottom of the inner wall of groove body, the worm wheel is connected to the outer surface of hollow screw rod, the screw plate is connected to the outer surface of hollow screw rod.

[0009] Through the above technical scheme: the four hole grooves are no longer blocked by the reverse starting of the driving mechanism transmission push mold mechanism descending, the push mold mechanism is adjusted through the external switch, and finally the driving mechanism is started in the forward direction to drive the push mold mechanism to ascend and insert into the inside of the four hole grooves, the rear subframe is ejected from the mold core of the lower mold, water is added into the cooling mechanism and the cooling mechanism is started, and the cold water circulates through the cooling mechanism and continuously contacts the inner wall of the meandering groove, so that the inside of the meandering groove is continuously cooled, and the cooling efficiency of the metal liquid is improved.

[0010] The utility model further sets up, the push mold mechanism still includes four U shaped seats, four electric rotating shafts, four plugging plates and four annular push rods, four U shaped seats all are connected in the top of screw plate, and four U shaped seats are located at four corners of screw plate respectively, four electric rotating shafts all rotationally connect between the two sides of four U shaped seat inner wall, four plugging plates are connected to the outer surface of four electric rotating shafts respectively, and four plugging plates are respectively attached with four holes of the top of groove body, four annular push rods are connected to the bottom of four plugging plates respectively.

[0011] Through the above technical scheme: the four hole grooves are no longer blocked by the reverse starting of the driving mechanism transmission push mold mechanism descending, the push mold mechanism is adjusted through the external switch, and finally the driving mechanism is started in the forward direction to drive the push mold mechanism to ascend and insert into the inside of the four hole grooves, the rear subframe is ejected from the mold core of the lower mold, water is added into the cooling mechanism and the cooling mechanism is started, and the cold water circulates through the cooling mechanism and continuously contacts the inner wall of the meandering groove, so that the inside of the meandering groove is continuously cooled, and the cooling efficiency of the metal liquid is improved.

[0012] The utility model further sets up, the two sides of screw plate are attached with the inside of groove body respectively.

[0013] Through the above technical scheme: the screw plate can be limited to move.

[0014] The utility model further sets up, the driving mechanism includes motor and worm, the motor is connected in the bottom of groove body inner wall, the worm rotationally connects in one side of groove body inner wall, and one end of worm is connected with one end of motor output shaft, the outer surface of worm is engaged with worm wheel.

[0015] Through the above technical scheme: the motor output shaft drives the worm to rotate, and the worm transmission push mold mechanism moves up and down to push out the formed rear subframe from the mold.

[0016] The utility model further sets up, cooling mechanism includes cooling box, water inlet, water pump, water inlet pipe, winding pipe and backflow pipe, cooling box connects at the bottom of inner wall of mould base, water inlet is set up at the top of cooling box, water pump is connected at the top of cooling box, and water pump's input end extends to the inside of cooling box, water inlet pipe is connected with the output of water pump, and one end of water inlet pipe extends to the inside of backshaped groove, winding pipe is connected in the inside of backshaped groove and is connected with one end of water inlet pipe on the outer surface of winding pipe, backflow pipe is connected at the top of cooling box, and one end of backflow pipe extends to the inside of backshaped groove and is connected with the outer surface of winding pipe.

[0017] Through the above technical scheme: the water pump is started to transport the cold water in the cooling box to the inside of the winding pipe through the water inlet pipe, and the cold water contacts the inner wall of the backshaped groove through the winding pipe, which can cool the inner wall of the backshaped groove and the metal liquid, thereby improving the cooling speed of the metal liquid.

[0018] The utility model further sets up, cooling mechanism still includes fan and heat dissipation hole, cooling box is connected at the top of cooling box, heat dissipation hole is set up at the top of cooling box.

[0019] Through the above technical scheme: the fan is started to blow the water in the cooling box, which is cooled and radiated faster by the refrigeration of the cooling box, thereby achieving the effect of rapid cooling, and finally the air is discharged from the heat dissipation hole.

[0020] The utility model further sets up, the bottom of mould base is connected with material cylinder, the inside of material cylinder is connected with feeding pipe, and the top of feeding pipe extends to the top of lower mould.

[0021] Through the above technical scheme: by adding compressed air into the material cylinder, the metal liquid can be transported into the mold core of the lower mould through the feeding pipe for pouring.

[0022] The utility model has the advantages that:

[0023] 1、In the utility model, under the action of the push mold mechanism and the driving mechanism, the formed rear subframe in the lower mold can be pushed out from four stress points, and the hole and groove can also be plugged, which does not affect the molding of the metal liquid in the mold core, and the staff does not need to use a crowbar to warp the rear subframe, thereby improving the efficiency and quality of the staff demolding.

[0024] 2. The utility model discloses, through the effect of cooling mechanism that sets down, make cooling mechanism can through the meandering groove constantly to the metal liquid in the lower mould circulation cooling, accelerate the cooling speed of metal liquid to improve the efficiency of rear subframe forming, further improve the work efficiency of the device production rear subframe. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The front view of the low-pressure casting mold for the rear subframe is provided for the utility model;

[0026] Figure 2 The position schematic view of the feeding pipe of the low-pressure casting mold for the rear subframe is provided for the utility model;

[0027] Figure 3 The internal structure schematic view of the groove body of the lower mould is provided for the utility model;

[0028] Figure 4 The structure schematic view of the mold pushing mechanism and the driving mechanism of the low-pressure casting mold for the rear subframe is provided for the utility model;

[0029] Figure 5 The partial structure schematic view of the mold pushing mechanism of the low-pressure casting mold for the rear subframe is provided for the utility model;

[0030] Figure 6 The structure schematic view of the cooling mechanism of the low-pressure casting mold for the rear subframe is provided for the utility model.

[0031] In the drawing: 1, mold base; 2, upper mould; 3, lower mould; 4, mold pushing mechanism; 401, hollow screw rod; 402, worm wheel; 403, threaded plate; 404, U-shaped seat; 405, electric rotating shaft; 406, plugging plate; 407, annular push rod; 5, driving mechanism; 501, motor; 502, worm; 6, cooling mechanism; 601, cooling box; 602, water inlet; 603, water pump; 604, water inlet pipe; 605, winding pipe; 606, return pipe; 607, fan; 608, heat dissipation hole. DETAILED DESCRIPTION

[0032] The technical scheme of the patent will be further described in detail in combination with specific implementation manners.

[0033] The embodiments of the patent will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the patent, and cannot be understood as a limitation on the patent.

[0034] In the description of the patent, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the patent.

[0035] In the description of the patent, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or It can be detachably connected, set, or integrally connected and set. For those skilled in the art, the specific meaning of the above terms in the patent can be understood according to the specific circumstances.

[0036] Referring to Figures 1-6 , the rear subframe low-pressure casting mold comprises a mold base 1, an upper mold 2 connected to the top of the inner wall of the mold base 1, a lower mold 3 connected to the bottom of the inner wall of the mold base 1, a groove body provided in the inside of the lower mold 3, a push mold mechanism 4 provided between the bottom of the inner wall and the top of the inner wall of the groove body, a driving mechanism 5 provided at the bottom of the inner wall of the groove body, and the driving mechanism 5 is engaged with the push mold mechanism 4, a back-shaped groove is provided at the top of the lower mold 3, a cooling mechanism 6 is provided at the bottom of the inner wall of the mold base 1, and the cooling mechanism 6 extends into the inside of the back-shaped groove. When the rear subframe formed in the lower mold 3 needs to be ejected, the driving mechanism 5 is started in reverse to drive the push mold mechanism 4 to descend and no longer block the four hole grooves. Then the push mold mechanism 4 is adjusted by an external switch. Finally, the driving mechanism 5 is started in the forward direction to drive the push mold mechanism 4 to ascend and insert into the inside of the four hole grooves, so that the rear subframe can be ejected from the mold core of the lower mold 3. By adding water to the cooling mechanism 6 and starting the cooling mechanism 6, the cold water circulates through the cooling mechanism 6 and continuously contacts the inner wall of the back-shaped groove, thereby continuously cooling the inside of the back-shaped groove and improving the cooling efficiency of the metal liquid.

[0037] In order to facilitate the up and down movement of the threaded plate 403, referring to Figures 4-5 , the push mold mechanism 4 comprises a hollow threaded rod 401, a worm gear 402 and a threaded plate 403. The hollow threaded rod 401 is rotatably connected between the top and bottom of the inner wall of the groove body. The worm gear 402 is connected to the outer surface of the hollow threaded rod 401. The threaded plate 403 is threadedly connected to the outer surface of the hollow threaded rod 401. The worm gear 402 drives the hollow threaded rod 401 to rotate forward or reverse, so that the threaded plate 403 can ascend or descend.

[0038] In order to facilitate the ejection of the rear subframe, referring to Figures 3-5The pushing mold mechanism 4 further comprises four U-shaped seats 404, four electric rotating shafts 405, four blocking plates 406 and four annular push rods 407. The four U-shaped seats 404 are connected to the top of the threaded plate 403, and are located at the four corners of the threaded plate 403 respectively. The four electric rotating shafts 405 are rotatably connected between the inner walls of the four U-shaped seats 404. The four blocking plates 406 are connected to the outer surfaces of the four electric rotating shafts 405 respectively, and are matched with the four hole grooves at the top of the inner wall of the groove body respectively. The four annular push rods 407 are connected to the bottoms of the four blocking plates 406 respectively. After the metal liquid in the lower mold 3 is formed, the four blocking plates 406 are lowered to remove the blocking of the four hole grooves through the threaded plate 403. At this time, the four electric rotating shafts 405 are started to rotate through the external switch, so as to drive the four blocking plates 406 to overturn one hundred and eighty degrees, so as to make the four annular push rods 407 upward. Finally, the four annular push rods 407 are inserted into the four hole grooves through the threaded plate 403, so as to push out the rear subframe, thereby completing the convenient demolding of the rear subframe.

[0039] In order to limit the up-down movement of the threaded plate 403, with reference to Figure 2 The two sides of the threaded plate 403 are matched with the inside of the groove body respectively. Through the matching of the two sides of the threaded plate 403 with the groove body, the up-down movement of the threaded plate 403 can be limited.

[0040] In order to facilitate the transmission of the lower mold 3 to demold the rear subframe, with reference to Figures 3-4 The driving mechanism 5 comprises a motor 501 and a worm 502. The motor 501 is connected to the bottom of the inner wall of the groove body. The worm 502 is rotatably connected to one side of the inner wall of the groove body, and one end of the worm 502 is connected to one end of the output shaft of the motor 501. The outer surface of the worm 502 is engaged with the worm gear 402. Through the rotation of the worm 502 driven by the output shaft of the motor 501, the pushing mold mechanism 4 can be driven to move up and down to push out the formed rear subframe.

[0041] In order to speed up the forming speed of the metal liquid, with reference to Figure 6The cooling mechanism 6 comprises a cooling box 601, a water inlet 602, a water pump 603, a water inlet pipe 604, a winding pipe 605 and a return pipe 606. The cooling box 601 is connected to the bottom of the inner wall of the mold base 1. The water inlet 602 is arranged on the top of the cooling box 601. The water pump 603 is connected to the top of the cooling box 601, and the input end of the water pump 603 extends into the cooling box 601. The water inlet pipe 604 is connected to the output end of the water pump 603, and one end of the water inlet pipe 604 extends into the meandering groove. The winding pipe 605 is connected in a meandering manner in the meandering groove, and the outer surface of the winding pipe 605 is connected to one end of the water inlet pipe 604. The return pipe 606 is connected to the top of the cooling box 601, and one end of the return pipe 606 extends into the meandering groove and is connected to the outer surface of the winding pipe 605. The water pump 603 is started to deliver the cold water in the cooling box 601 to the inside of the winding pipe 605 through the water inlet pipe 604. The cold water contacts the inner wall of the meandering groove through the winding pipe 605, thereby cooling the inner wall of the meandering groove and cooling the metal liquid, so as to improve the cooling speed of the metal liquid.

[0042] In order to always have cold water, with reference to Figure 6 The cooling mechanism 6 further comprises a fan 607 and a heat dissipation hole 608. The cooling box 601 is connected to the top of the cooling box 601, and the heat dissipation hole 608 is arranged on the top of the cooling box 601. The fan 607 blows air into the inside of the cooling box 601 to cool the water after absorbing heat, and cooperates with the refrigeration of the cooling box 601 to quickly dissipate heat from the water, thereby achieving the effect of rapid cooling. Finally, the air is discharged from the heat dissipation hole 608.

[0043] In order to deliver the metal liquid to the inside of the lower mold 3, with reference to Figures 1-2 The bottom of the mold base 1 is connected with a barrel, and the inside of the barrel is connected with a feeding pipe. The top end of the feeding pipe extends to the top of the lower mold 3. By injecting compressed air into the barrel, the metal liquid in the barrel can be delivered to the mold core of the lower mold 3 for molding through the feeding pipe.

[0044] Working principle: in use, through the die holder 1, the upper die 2 and the lower die 3 are closed, then the gas is sent to the barrel, the metal liquid in the barrel is sent to the die core arranged on the top of the lower die 3, when the rear subframe formed in the lower die 3 needs to be demoulded, the motor 501 is started in reverse direction, the output shaft of the motor 501 drives the worm 502 to rotate reversely, when the worm 502 rotates, the hollow screw rod 401 is driven to rotate by the transmission worm 402, the threaded plate 403 is lowered on the outer surface of the hollow screw rod 401, the four blocking plates 406 are lowered, the four holes are no longer blocked, at this time, the four electric rotating shafts 405 are started to rotate through the external switch, thereby driving the four blocking plates 406 to overturn one hundred and eighty degrees, thereby driving the four annular push rods 407 to be upwards, the motor 501 is started to drive the worm 502 to rotate in positive direction, the four annular push rods 407 are inserted into the four holes, thereby ejecting the formed rear subframe from the die core, thereby completing the convenient demoulding work, when the metal liquid needs to be cooled quickly, the worker adds cold water into the cooling box 601 through the water inlet 602, the water pump 603 is started, the water pump 603 sucks water from the inside of the cooling box 601 through the input end, the water is sent into the inside of the winding pipe 605 through the output end of the water pump 603, the cold water contacts the inner wall of the meandering groove through the winding pipe 605, the inner wall of the meandering groove is cooled, thereby cooling the metal liquid, the heated water is returned to the inside of the cooling box 601 through the return pipe 606 for recycling, then the fan 607 blows the air to the inside of the cooling box 601, thereby cooling the water in the cooling box 601 quickly, finally the hot air is discharged through the heat dissipation hole 608.

[0045] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent substitutions or changes according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A low pressure casting mold for a rear subframe, comprising a mold base (1), characterized in that, The top of the inner wall of the die holder (1) is connected with an upper die (2), the bottom of the inner wall of the die holder (1) is connected with a lower die (3), the inside of the lower die (3) is provided with a groove, the bottom of the inner wall of the groove and the top of the inner wall are provided with a die pushing mechanism (4), the bottom of the inner wall of the groove is provided with a driving mechanism (5), and the driving mechanism (5) is engaged with the die pushing mechanism (4), the top of the lower die (3) is provided with a meandering groove, the bottom of the inner wall of the die holder (1) is provided with a cooling mechanism (6), and the cooling mechanism (6) extends into the inside of the meandering groove; The die pushing mechanism (4) comprises a hollow threaded rod (401), a worm wheel (402) and a threaded plate (403), the hollow threaded rod (401) is rotatably connected between the top and the bottom of the inner wall of the groove, the worm wheel (402) is connected to the outer surface of the hollow threaded rod (401), and the threaded plate (403) is threadedly connected to the outer surface of the hollow threaded rod (401). The driving mechanism (5) comprises a motor (501) and a worm (502), the motor (501) is connected to the bottom of the inner wall of the groove, the worm (502) is rotatably connected to one side of the inner wall of the groove, one end of the worm (502) is connected to one end of the output shaft of the motor (501), and the outer surface of the worm (502) is engaged with the worm wheel (402).

2. The rear subframe low pressure casting mold according to claim 1, characterized by, The die pushing mechanism (4) further comprises four U-shaped seats (404), four electric rotating shafts (405), four blocking plates (406) and four annular push rods (407), the four U-shaped seats (404) are all connected to the top of the threaded plate (403), and the four U-shaped seats (404) are respectively located at the four corners of the threaded plate (403), the four electric rotating shafts (405) are all rotatably connected between the inner walls of the four U-shaped seats (404), the four blocking plates (406) are respectively connected to the outer surfaces of the four electric rotating shafts (405), and the four blocking plates (406) are respectively fitted with the four holes in the top of the inner wall of the groove, and the four annular push rods (407) are respectively connected to the bottoms of the four blocking plates (406).

3. The die casting mold for a rear subframe low pressure according to claim 2, characterized by, The two sides of the threaded plate (403) are respectively fitted with the inside of the groove.

4. The rear subframe low pressure casting mold according to claim 1, characterized by, The cooling mechanism (6) comprises a cooling box (601), a water inlet (602), a water pump (603), a water inlet pipe (604), a winding pipe (605) and a return pipe (606), the cooling box (601) is connected to the bottom of the inner wall of the mold base (1), the water inlet (602) is arranged on the top of the cooling box (601), the water pump (603) is connected to the top of the cooling box (601), and the input end of the water pump (603) extends to the inside of the cooling box (601), the water inlet pipe (604) is connected with the output end of the water pump (603), and one end of the water inlet pipe (604) extends to the inside of the meandering groove, the winding pipe (605) is connected in the meandering groove, and the outer surface of the winding pipe (605) is connected with one end of the water inlet pipe (604), the return pipe (606) is connected to the top of the cooling box (601), and one end of the return pipe (606) extends to the inside of the meandering groove and is connected with the outer surface of the winding pipe (605).

5. The low pressure casting mold for a rear subframe according to claim 4, characterized by, The cooling mechanism (6) further comprises a fan (607) and a heat dissipation hole (608), the cooling box (601) is connected to the top of the cooling box (601), and the heat dissipation hole (608) is arranged on the top of the cooling box (601).

6. The low-pressure casting mold for a rear subframe according to claim 5, characterized by The bottom of the mold base (1) is connected with a barrel, the inside of the barrel is connected with a feeding pipe, and the top end of the feeding pipe extends to the top of the lower mold (3).

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