High-precision die-casting mold for aluminum alloy part fine hole

Abstract

The application relates to the technical field of casting molds, in particular to a high-precision die-casting forming mold for aluminum alloy part fine holes; the mold support is provided with an upper mold module and a lower mold module; a fine hole forming mechanism, a punching mechanism, a supporting and lifting mechanism and a positioning mechanism are further arranged; the upper mold module and the lower mold module can vertically move in a guided mode through the guidance of the longitudinal driving grooves, thereby realizing stable mold opening and mold closing; the mold opening is reduced, and the manufacturing cost of the mold is reduced without the sliding cooperation of guide rods and guide holes; after demolding, the punching mechanism works, separate drilling equipment is not needed, the site occupation of the factory building is reduced, other process equipment can be arranged, and the processing cost of the casting part is greatly reduced; when punching, the punching telescopic seat is extended, the lifting positioning rod is lifted, the top of the lifting positioning rod is supported against the casting part through the opening mold module, thereby preventing the casting part from falling, further positioning the casting part and improving the stability and precision of drilling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting mold, in particular to a high-precision die casting forming mold for aluminum alloy part fine hole. BACKGROUND

[0002] The die casting mold is an advanced manufacturing technology widely used in the fields of automobile, electronics, electrical appliances, industry, etc., and is a mold for manufacturing metal parts. It uses high pressure to rapidly fill liquid or semi-liquid metal into the mold cavity, and cools and solidifies under pressure to form the required shape and size. The high-pressure die casting mold is usually composed of two parts, the fixed mold and the movable mold. The fixed mold is connected to the injection part of the die casting machine, and the movable mold is connected to the middle plate of the die casting machine. The structure and components of the high-pressure die casting mold vary depending on different products and processes, but generally include fixed mold inserts, movable mold inserts, core-pulling mechanisms, gate systems, cooling systems, etc. The materials and heat treatment requirements of the high-pressure die casting mold also vary depending on different metal alloys and usage conditions, but generally require high strength, high hardness, high wear resistance, high heat resistance, etc.

[0003] After the die casting mold is used to form the product, the next step is usually required, such as punching in some areas, edge grinding, etc. Therefore, the product needs to be removed from the casting mold and then positioned in the corresponding punching equipment for punching process. Since the product needs to be transferred between the equipment and positioned again, a large number of equipment is required, and a lot of time is spent on operation and positioning, which is very inefficient. SUMMARY

[0004] The present application aims to provide a high-precision die casting forming mold for aluminum alloy part fine hole to overcome the shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution of the present application is as follows:

[0006] A high-precision die casting forming mold for aluminum alloy part fine hole, comprising a mold support, the mold support is formed with a longitudinally arranged longitudinal drive slot and transversely arranged first and second transverse drive slots, the first and second transverse drive slots are transversely coaxially aligned, and the first and second transverse drive slots and the longitudinal drive slot are vertically connected and form a cross slot structure;

[0007] The longitudinal drive slot is provided with an upper mold module and a lower mold module, the upper mold module comprises an upper mold plate and an upper mold core installed at the bottom of the upper mold plate, the lower mold module comprises a lower mold plate and a lower mold core installed at the top of the lower mold plate, the upper mold core and the lower mold core form a mold cavity, a side drive plate is installed between the upper mold module and the lower mold module, the side drive plate is used for guiding the lower mold to cooperate with the upper mold module, and a fine hole forming mechanism is arranged in the mold cavity.

[0008] The fine hole forming mechanism comprises a forming guide seat slidably mounted on the lower mold core and a long rod capable of approaching or moving away from the forming guide seat, the forming guide seat is formed with a forming guide hole for inserting the long rod; the first transverse drive slot is slidably provided with a first transverse drive seat, the first transverse drive seat is provided with a side mounting seat, the outer end of the long rod is mounted on the side mounting seat, the side drive plate is formed with a first through hole through which the long rod can move, and the lower mold core is formed with a second through hole through which the long rod can move;

[0009] The second transverse drive slot is provided with a punching mechanism, the punching mechanism comprises a punching drive seat slidably mounted on the second transverse drive slot, the punching drive seat is provided with a punching telescopic seat capable of transverse expansion and contraction, the punching telescopic seat is provided with a punching lifting seat capable of longitudinal movement, and the punching lifting seat is provided with a punching die set at the top; the punching die set comprises a punching drive sleeve embedded in the punching lifting seat, a rotating drive sleeve is mounted at the top of the punching drive sleeve, a pair of spaced-apart drilling heads are mounted on the rotating drive sleeve, the drilling head comprises a drill head seat mounted on the top of the rotating drive sleeve and a drill rod mounted on the top of the drill head seat, a driving gear capable of rotating is mounted in the rotating drive sleeve, a pair of driven gears meshing with the driving gear are arranged, and the two driven gears are respectively arranged on the left and right sides of the driving gear; one of the driven gears drives one of the drilling heads to rotate, and the other driven gear drives the other drilling head to rotate;

[0010] The punching telescopic seat is also provided with a supporting and lifting mechanism for supporting and positioning the product after casting forming, the supporting and lifting mechanism comprises a lifting positioning rod, and a mold opening set capable of resisting the casting part is mounted at the top of the lifting positioning rod.

[0011] The beneficial effects of the present application are:

[0012] 1. The upper mold set and the lower mold set can be guided to vertically move downward through the guide of the longitudinal drive slot, so as to stably open and close the mold; after closing the mold, the upper mold core and the lower mold core form a mold cavity, which can be used for forming high-precision aluminum alloy castings; without using the sliding cooperation of guide rods and guide holes, the opening of the mold is reduced, and the manufacturing cost of the mold is reduced;

[0013] 2. When the mold is closed, the first transverse drive seat provided with the side mounting seat moves inward along the first transverse drive slot, the long rod passes through the first through hole and the second through hole in sequence and is inserted into the forming guide hole in the forming guide seat mounted on the lower mold core, so as to position the long rod and prevent the long rod from falling due to the length being too long, so as to ensure the precision of the formed fine hole and the precision of the castings;

[0014] 3. After the casting is formed in the mold cavity, the mold is opened, and then the casting is attached to the upper mold core of the upper mold module. At this time, the upper mold module moves to the top of the second longitudinal drive slot, and the lower mold moves to the bottom of the second longitudinal drive slot along the longitudinal drive slot. The upper mold module and the lower mold module form a gap for the transverse insertion of the punching drive seat. The punching telescopic seat installed on the punching drive seat is extended, so that the drill head is coaxially aligned with the drilling position;

[0015] 4. During drilling, the punching lifting seat can drive the drill head to approach the drilling position of the casting. The driving gear in the driving sleeve rotates to drive the driven gear to rotate, and the drill rod rotates in the drill seat to realize drilling. There is no need to operate the drilling equipment, which saves the operation time and does not need to be positioned twice. The casting can be positioned through the upper mold core; there is no need to separately arrange the drilling equipment, the site occupation of the factory building is reduced, other process equipment can be arranged, and the processing cost of the casting is greatly reduced;

[0016] 5. After the punching telescopic seat is extended, the lifting positioning rod is lifted, so that the top of the lifting positioning rod supports the casting through the opening mold set, thereby preventing the casting from falling, further positioning the casting, and improving the stability and precision of drilling. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the structure of the die casting mold, and a plurality of mold cylinders are hidden.

[0018] Figure 2 It is a schematic view of the structure of the die casting mold in the front view direction.

[0019] Figure 3 It is a schematic view of the structure of the die casting mold in the side view direction.

[0020] Figure 4 It is a schematic view of the structure of the fine hole forming mechanism and the row position module.

[0021] Figure 5 It is a schematic view of the cross-sectional structure of the punching mechanism.

[0022] Figure 6 It is a schematic view of the cross-sectional structure of the supporting and lifting mechanism.

[0023] Figure 7 It is a schematic view of the connection of the upper mold module and the positioning mechanism. The state diagram when the upper mold module is not demolded.

[0024] Figure 8 It is a schematic view of the connection of the upper mold module and the positioning mechanism. The state diagram after the upper mold module is lifted after demolding.

[0025] Figure 9 It is a schematic view of the connection of the mold support and the second lifting mechanism.

[0026] Reference signs include:

[0027] 1-mold support,

[0028] 11-upper mold module, 110-lower mold module, 111-upper mold plate, 112-upper mold core,

[0029] 113-lower mold plate, 114-lower mold core, 115-ejection driving cavity, 116-ejection driving seat,

[0030] 117-ejection rod, 118-ejection hole, 119-side driving plate,

[0031] 12-fine hole forming mechanism, 120-first transverse driving groove, 121-forming guide seat,

[0032] 122-first transverse driving seat, 123-side mounting seat, 124-first through hole, 125-second through hole, 126-long rod, 127-forming guide hole,

[0033] 13-row position module, 131-row position slider, 132-bottom row position groove, 133-inclined position guide hole,

[0034] 134-inclined position guide rod, 135-side sliding block,

[0035] 14-longitudinal driving groove, 141-top driving seat, 142-first mold lifting cylinder,

[0036] 143-bottom driving seat, 144-second mold lifting cylinder, 145-third mold telescopic cylinder,

[0037] 146-fourth mold telescopic cylinder, 147-second transverse driving seat,

[0038] 2-punching mechanism, 21-second transverse driving groove,

[0039] 210-punching driving seat, 211-punching telescopic seat, 212-punching lifting seat, 213-punching driving sleeve, 214-rotary driving sleeve, 2141-first driving groove, 2142-second driving groove, 2143-power rod, 2144-driving shaft 215-drill head seat, 216-drill rod, 217-driving gear, 218-driven gear, 219-iron scrap waste tray,

[0040] 22-supporting jacking mechanism,

[0041] 221-lifting positioning rod, 222-top concave hole, 223-buffer rod, 224-transverse driving hole,

[0042] 225 - buffer block, 2251 - first inclined surface, 2252 - second inclined surface, 2253 - third inclined surface,

[0043] 2254 - fourth inclined surface, 226 - top annular groove, 227 - support seat, 228 - clamping block,

[0044] 3 - positioning mechanism, 31 - first lifting mechanism, 311 - first positioning guide hole,

[0045] 312 - second positioning guide hole, 313 - positioning guide column, 314 - first fitting groove,

[0046] 315 - rack drive groove, 316 - first drive gear, 317 - first drive rack,

[0047] 32 - second lifting mechanism,

[0048] 321 - adsorption guide column, 322 - side drive groove, 323 - transverse movement seat, 324 - folding rod,

[0049] 325 - adsorption drive seat, 326 - adsorption guide hole, 327 - adsorption transmission screw sleeve,

[0050] 33 - top drive groove,

[0051] 331 - top lifting air cylinder, 332 - connecting seat, 333 - outer containing groove, 334 - first movable rod,

[0052] 335 - second movable rod, 336 - third movable rod. DETAILED DESCRIPTION

[0053] The application will be described in detail below with reference to the accompanying drawings.

[0054] As Figures 1-9 shown, a high-precision die-casting forming mold for aluminum alloy part fine holes.

[0055] The mold support 1 is formed with a longitudinally arranged longitudinal driving groove 14 and transversely arranged first and second transverse driving grooves 120 and 21 which are coaxially aligned in transverse direction, and the first and second transverse driving grooves 120 and 21 and the longitudinal driving groove 14 are vertically communicated with each other to form a cross groove structure; the longitudinal driving groove 14 is provided with an upper mold module 11 and a lower mold module 110, the upper mold module 11 includes an upper mold plate 111 and an upper mold core 112 mounted on the bottom of the upper mold plate 111; the lower mold module 110 includes a lower mold plate 113 and a lower mold core 114 mounted on the top of the lower mold plate 113, the upper mold core 112 and the lower mold core 114 form a mold cavity, and a side driving plate 119 is arranged between the upper mold module 11 and the lower mold module 110 and mounted in the first transverse driving groove 120, the side driving plate 119 is used for guiding the lower mold to cooperate with the upper mold module 11; when the upper mold module 11 and the lower mold module 110 move close to or away from each other, the sliding cooperation of guide rods and guide holes is not needed, the opening of the mold is reduced, and the manufacturing cost of the mold is reduced.

[0056] The upper mold module 11 and the lower mold module 110 can be guided to vertically move downward through the guidance of the longitudinal driving groove 14, and the stable mold opening and mold closing can be realized; after the mold is closed, the upper mold core 112 and the lower mold core 114 form a mold cavity, which can be used for forming high-precision aluminum alloy castings.

[0057] Specifically, the first mold lifting cylinder 142 is arranged on the top of the mold support 1, the longitudinal driving groove 14 is further provided with a top driving seat 141 located on the top of the upper mold plate 111, and the driving end of the first mold lifting cylinder 142 is connected with the top driving seat 141; under the driving of the first mold lifting cylinder 142, the top driving seat 141 can move up and down in the longitudinal driving groove 14, and the upper mold module 11 mounted on the bottom of the top driving seat 141 can move close to or away from the lower mold module 110; the mold opening and mold closing can be realized. The second mold lifting cylinder 144 is arranged on the bottom of the mold support 1, the driving end of the second mold lifting cylinder 144 is connected with the bottom driving seat 143; under the driving of the second mold lifting cylinder 144, the lower mold module 110 mounted on the top of the bottom driving seat 143 can move close to or away from the upper mold module 11; the mold opening and mold closing can be realized. In addition, the top of the bottom driving seat 143 is formed with a demolding driving cavity 115, the demolding driving cavity 115 is mounted with a demolding driving seat 116 which can move up and down, the demolding driving seat 116 is mounted with a plurality of demolding rods 117, the lower mold core 114 and the lower mold plate 113 are coaxially formed with demolding holes 118 through which the demolding rods 117 pass, when the mold is opened, the demolding rods 117 are lifted by the lifting cylinder and driven to rise in the demolding driving cavity 115, the demolding rods 117 pass through the demolding holes 118 to separate the castings located in the lower mold core 114, the demolding is realized, and the product is prevented from adhering to the lower mold core 114.

[0058] The forming cavity is provided with a fine hole forming mechanism 12, which comprises a forming guide seat 121 slidably mounted on the lower mold core 114 and a long rod 126 capable of approaching or moving away from the forming guide seat 121, and the forming guide seat 121 is formed with a forming guide hole 127 for inserting the long rod 126; the first transverse driving slot 120 is slidably provided with a first transverse driving seat 122, the first transverse driving seat 122 is provided with a side mounting seat 123, the outer end of the long rod 126 is mounted on the side mounting seat 123, the side driving plate 119 is formed with a first through hole 124 for the long rod 126 to pass through, and the lower mold core 114 is formed with a second through hole 125 for the long rod 126 to pass through. When the mold is closed, the first transverse driving seat 122 provided with the side mounting seat 123 moves inward along the first transverse driving slot 120, the long rod 126 passes through the first through hole 124 and the second through hole 125 in sequence and cooperates with the forming guide seat 121 mounted on the lower mold core 114, and is inserted into the forming guide hole 127, so as to position the long rod 126 and prevent the long rod 126 from falling due to the length being too long, thereby ensuring the fine hole forming precision and the precision of the castings.

[0059] The third mold telescopic cylinder 145 is installed on the right side of the mold support 1, and the driving end of the third mold telescopic cylinder 145 is connected with the first transverse driving seat 122 of the first transverse driving slot 120, so as to drive the long rod 126 to move transversely and approach or move away from the mold cavity.

[0060] Further, the upper mold module 11 and the lower mold module 110 are provided with a row position module 13, which comprises an inclined position guide rod 134 mounted on the upper mold module plate 111 and a row position sliding block 131 slidably mounted on the lower mold core 114, and the row position sliding block 131 is formed with an inclined position guide hole 133 for the inclined position guide rod 134 to pass through; the lower mold core 114 is formed with a bottom row position slot 132 for the row position sliding block 131 to move transversely, and the two sides of the bottom row position slot 132 are provided with side guide plates, the side guide plates are formed with side guide rails along the length direction, and the side wall of the row position sliding block 131 is formed with a side sliding block 135 in sliding cooperation with the side guide rail. When the mold is closed, the inclined position guide rod 134 mounted on the upper mold module plate 111 will be lowered and inserted into the inclined position guide hole 133 of the row position sliding block 131, which will drive the row position sliding block 131 to move transversely and inwardly along the bottom row position slot 132, thereby realizing the mold closing.

[0061] The forming guide seat 121 is installed on the inner end face of the row slide 131, and the row slide 131 is coaxially aligned with the long rod 126 in the transverse direction, so that when the mold is closed, the forming guide seat 121 is moved downward to the inside of the lower mold core 114 under the action of the row slide 131, and the long rod 126 is inserted into the forming guide hole 127 to position the long rod 126, so that the long rod 126 is fixed in the position of the mold cavity, which is beneficial to the hole forming of the cast part.

[0062] The second transverse driving groove 21 is provided with a punching mechanism 2, which includes a punching driving seat 210 slidingly installed in the second transverse driving groove 21, and a fourth mold telescopic cylinder 146 is installed on the left side of the mold support 1, and the driving end of the fourth mold telescopic cylinder 146 is connected with the punching driving seat 210 of the second transverse driving groove 21.

[0063] The punching driving seat 210 is installed with a punching telescopic seat 211 capable of transversely telescoping, the punching telescopic seat 211 is installed with a punching lifting seat 212 capable of longitudinally moving, and the punching lifting seat 212 is installed with a punching mold group on the top; the punching mold group includes a punching driving sleeve 213 embedded into the punching lifting seat 212, a rotating driving sleeve 214 installed on the top of the punching driving sleeve 213, a pair of spaced-apart drilling heads installed on the rotating driving sleeve 214, a drill head seat 215 installed on the top of the drilling head seat 215, and a drill rod 216 installed on the top of the drill head seat 215, and a driving gear 217 capable of rotating is installed in the rotating driving sleeve 214, a pair of driven gears 218 meshing with the driving gear 217 are installed, and the two driven gears 218 are respectively arranged on the left and right sides of the driving gear 217, wherein one of the driven gears 218 rotationally drives one of the drilling heads to rotate, and the other driven gear 218 rotationally drives the other drilling head to rotate. In the embodiment, after the cast part is formed in the mold cavity, the mold is opened, and then the cast part is attached to the upper mold core 112 of the upper mold group 11, at this time, the upper mold group 11 moves along the longitudinal driving groove 14 to the top of the second transverse driving groove 21, the lower mold moves along the longitudinal driving groove 14 to the bottom of the second transverse driving groove 21, and a space is formed between the upper mold group 11 and the lower mold group 110 for the transverse insertion of the punching driving seat 210, the punching telescopic seat 211 installed on the punching driving seat 210 is extended, so that the drilling head is coaxially aligned with the drilling hole.

[0064] When drilling, the punching lifting seat 212 can drive the drilling head to approach the drilling hole of the cast part, the driving gear 217 in the rotating driving sleeve 214 rotationally drives the driven gear 218 to rotate, the drill rod 216 rotates in the drill head seat 215, and drilling is realized. Without the need to operate the drilling equipment, the operation time is saved, and without the need for secondary positioning, the cast part can be positioned through the upper mold core; without the need to separately arrange the drilling equipment, the site occupation of the factory is reduced, other process equipment can be arranged, and the processing cost of the cast part is greatly reduced.

[0065] Preferably, a drill bit drive cavity is formed inside the rotating drive sleeve 214. The drill bit drive cavity has a first drive groove 2141 coaxially aligned with the drilling drive sleeve 213 and a pair of second drive grooves 2142 that cooperate with the drill bit. A power rod 2143 inserted into the drill bit seat 215 is installed in the second drive groove 2142. A driven gear 218 is sleeved on the power rod 2143. A drive shaft 2144 is installed in the first drive groove 2141. The drive shaft 2144 rotates under the drive of the motor. The drive gear sleeved on the drive shaft 2144 and the driven gear 218 sleeved on the power rod 2143 rotate, so that the drill bit rod 216 can rotate in the drill bit seat 215. Then, under the lifting drive of the drilling lifting seat 212, the casting is drilled.

[0066] It should be noted that the drilling telescopic seat 211 is driven by the telescopic cylinder installed on the drilling drive seat 210 to perform telescopic movement, and the drilling telescopic seat 211 is equipped with a lifting cylinder to drive the drilling lifting seat 212 to perform lifting movement.

[0067] It should be noted that a funnel-shaped scrap metal tray 219 is installed on the top of the rotating drive sleeve 214. During drilling, the scrap metal is held and stored by the scrap metal tray 219, and the scrap metal will not fall into the lower mold core 114 of the lower mold assembly 110, thus affecting the subsequent casting of the part.

[0068] In addition, to prevent the casting from falling off the upper mold core 112 during drilling, the drilling telescopic seat 211 is also equipped with a support lifting mechanism 22 for supporting and positioning the product after casting. The support lifting mechanism 22 includes a lifting positioning rod 221. The top of the lifting positioning rod 221 is equipped with a support module that can hold the casting. After the drilling telescopic seat 211 extends, the lifting positioning rod 221 rises, so that the top of the lifting positioning rod 221 holds the casting through the support module, thereby preventing the casting from falling off, further positioning the casting, and improving the stability and accuracy of drilling.

[0069] Specifically, the expansion module comprises a top recess 222 formed on the top of the lifting positioning rod 221, the top recess 222 is provided with a buffer rod 223 driven to be elastically raised by a compression spring, the top recess 222 is radially provided with a transverse driving hole 224, the transverse driving hole 224 is slidingly provided with a buffer block 225 elastically moving inward, the buffer rod 223 is formed with a first slope 2251 at the bottom, the buffer block 225 is formed with a second slope 2252 slidingly matched with the first slope 2251 at the inner end, the buffer block 225 is formed with a third slope 2253 at the outer end, the top of the lifting positioning rod 221 is coaxially provided with a top annular groove 226, the top annular groove 226 is axially slidingly provided with a support seat 227 driven to be elastically retracted by a tension spring, the support seat 227 is formed with a fourth slope 2254 slidingly matched with the outer end of the buffer block 225 at the bottom. The lifting positioning rod 221 is raised under the action of the lifting cylinder, the buffer rod 223 at the top of the lifting positioning rod 221 is pressed downward after abutting against the casting, the buffer block 225 is slidingly matched with the second slope 2252 of the radially arranged buffer block 225 through the first slope 2251 at the bottom surface, the buffer block 225 moves radially outward, the support seat 227 in the top annular groove 226 is slidingly matched with the fourth slope 2254 through the third slope 2253, and the top-up is realized.

[0070] The support seat 227 is formed with a clamping block 228 matched with a recess in the casting at the top, after the support seat 227 is lifted, the clamping block 228 at the top is matched with the recess of the casting, the positioning of the casting is further realized, and the casting is prevented from moving on the upper mold core 112 during drilling.

[0071] It should be noted that the lifting positioning rod 221 is connected by two lifting blocks, the two lifting blocks are movably connected through hole positions and guide rod structures, the guide rod is sleeved with a compression spring, and the lifting positioning rod 221 has a buffering effect when being pressed downward.

[0072] Further, after the casting is demolded from the lower mold core 114, the upper mold module 11 is lifted, at this time, the casting needs to be attached to the upper mold core 112, and the casting is prevented from falling from the upper mold core 112 due to gravity, for this purpose, the top driving seat 141 is provided with a positioning mechanism 3 for preventing the product from falling from the upper mold core 112, the positioning mechanism 3 comprises a first positioning guide hole 311 longitudinally formed on the upper mold module 11, the first positioning guide hole 311 is slidingly provided with a suction guide column 321 capable of moving longitudinally, and the suction guide column 321 is provided with a suction disc attached to the casting at the bottom. In the embodiment, after the casting is demolded from the lower mold core 114, the suction guide column 321 is pressed downward along the first positioning guide hole 311, the suction disc abuts against the casting, the casting is vacuum-sucked through the suction disc, the upper mold module 11 can prevent the casting from falling from the upper mold core 112 when being lifted, and the subsequent drilling operation is facilitated.

[0073] The top driving seat 141 is formed with a second positioning guide hole 312 coaxially aligned with the first positioning guide hole 311, and a positioning guide column 313 capable of longitudinal movement is slidingly installed between the first positioning guide hole 311 and the second positioning guide hole 312, and the bottom surface of the positioning guide column 313 is adapted to the shape of the upper mold core 112. After the mold is closed, the positioning guide column 313 is lowered along the second positioning guide hole 312 and the first positioning guide hole 311, so that the bottom surface of the positioning guide column 313 cooperates with the upper mold core 112, facilitating the molding of the cast part. After the molding is completed, the positioning guide column 313 is raised along the first positioning guide hole 311 and the second positioning guide hole 312 and retracts into the second positioning guide hole 312, leaving space for the adsorption guide column 321 to be inserted into the first positioning guide hole 311 to adsorb the product.

[0074] Specifically, the top driving seat 141 is provided with a first lifting mechanism 31 for driving the positioning guide column 313 to move up and down between the first positioning guide hole 311 and the second positioning guide hole 312. The first lifting mechanism 31 includes a first fitting groove 314 formed along the length direction of the positioning guide column 313. The top driving seat 141 is formed with a rack driving groove 315 communicating with the second positioning guide hole 312. The rack driving groove 315 is installed with a first driving gear 316 capable of rotating. The first fitting groove 314 is installed with a first driving rack 317 engaged with the first driving gear 316 for transmission. The first driving gear 316 located at the top driving seat 141 can engage with the first driving rack 317 of the positioning guide column 313 for transmission, thereby driving the positioning guide column 313 to move up and down in the second positioning guide hole 312 and also to move up and down in the first positioning guide hole 311. In this embodiment, after the product casting is completed, the first lifting mechanism 31 drives the positioning guide column 313 to descend, thereby demolding the cast part from the upper mold core 112. Subsequently, the positioning guide column 313 is raised and retracted into the second positioning guide hole 312, leaving space for the adsorption guide column 321 to be inserted into the first positioning guide hole 311 to adsorb the product.

[0075] Subsequently, the top of the upper mold group plate 111 is provided with a connecting seat 332, and the top driving seat 141 is formed with a top driving groove 33. The top driving groove 33 is installed with a top lifting cylinder 331, and the driving end of the top lifting cylinder 331 is connected with the connecting seat 332. Initially, the piston rod of the top lifting cylinder 331 is retracted, and at this time, there is almost no gap between the top driving seat 141 and the upper mold group plate 111. After the positioning guide column 313 is raised and retracted into the second positioning guide hole 312, the piston rod of the top lifting cylinder 331 is extended, so that there is a gap between the top driving seat 141 and the upper mold group plate 111 for the adsorption guide column 321 to enter the first positioning guide hole 311 transversely.

[0076] The top driving base 141 is provided with a second lifting mechanism 32 for driving the adsorption guide column 321 to make lifting movement in the positioning guide hole. The second lifting mechanism 32 comprises a lateral driving groove 322 transversely formed on the mold support 1, a lateral movement base 323 capable of transverse movement is installed on the lateral driving groove 322, a folding rod 324 capable of multi-section movement is installed on the lateral movement base 323, and an adsorption driving base 325 is installed at the end of the folding rod 324. The adsorption driving base 325 can move close to or away from the longitudinal driving groove 14 along the lateral driving groove 322 under the driving of the lateral air cylinder. When it is needed to transversely enter the adsorption guide column 321 into the first positioning guide hole 311, the adsorption driving base 325 is moved to the top of the first positioning guide hole 311.

[0077] The adsorption driving base 325 is formed with an adsorption guide hole 326 coaxially aligned with the positioning guide hole, and the adsorption guide column 321 is coaxially installed in the adsorption guide hole 326. The outer ring part of the adsorption guide column 321 is formed with a screw rod structure along the length direction, and the adsorption guide hole 326 is installed with an adsorption transmission screw sleeve 327 in transmission cooperation with the screw rod structure of the adsorption guide column 321. The adsorption transmission screw sleeve 327 rotates under the driving of the gear set and the motor, and is in transmission cooperation with the screw rod structure of the adsorption guide column 321, so that the adsorption guide column 321 can make lifting movement. When there is a gap between the top driving base 141 and the upper mold group plate 111, the adsorption guide column 321 is lowered, so that the adsorption disc is pressed downward to be attached to the top of the cast part, and the adsorption of the cast part is realized. Then, the top driving base 141 and the upper mold group 11 are integrally lifted under the driving of the first mold air cylinder, until the upper mold core is located at the top of the second lateral driving groove 21, and the punching telescopic base 211 can enter the longitudinal driving groove 14, and the lifting is stopped. After the adsorption of the adsorption disc under the adsorption disc, the top driving base 141 and the upper mold group 11 integrally rise along the longitudinal driving groove 14, and the cast part will not fall off.

[0078] Preferably, the folding rod 324 comprises a first movable rod 334, a second movable rod 335 and a third movable rod 336 connected in sequence, wherein the first movable rod 334 is connected with the transverse moving seat 323 at the other end, and the third movable rod 336 is connected with the adsorption driving seat 325 at the other end; the outer containing groove 333 for containing a part of the folding rod 324 is vertically formed on the outer sidewall of the upper die set plate 111. In the embodiment, after the adsorption disc of the adsorption guide column 321 adsorbs the casting part, the upper die set plate 111 will be lifted along the longitudinal driving groove 14, at this time, the first movable rod 334, the second movable rod 335 and the third movable rod 336 will gradually change from a character type to a similar “B” type, that is, the third movable rod 336 is transversely located at the top of the upper die set plate 111, the second movable rod 335 is vertically located at the outer containing groove 333 of the outer sidewall of the upper die set plate 111, and the first movable rod 334 is located in the side driving groove 322 of the die support 1, so as to ensure that the adsorption driving seat 325 and the transverse moving seat 323 are connected. After the drilling is completed, the upper die set plate 111 and the top driving seat 141 will be lowered along the longitudinal driving groove 14, the adsorption guide column 321 will be retracted, and after the adsorption driving seat 325 and the transverse moving seat 323 are transversely aligned, the transverse moving seat 323 can move outward along the side driving seat, and the adsorption driving seat 325 is retracted from the upper die set plate 111 to the side driving groove 322; so that the positioning guide column 313 enters the first positioning guide hole 311 for subsequent hole forming operation of the casting.

[0079] In addition, the number of the first positioning guide hole 311 is multiple, and the first positioning guide hole 311 is coaxially aligned with the drilling position. When drilling, the lifting positioning rod 221 of the supporting and lifting mechanism 22 cooperates with the opening die set to position the casting part, and the adsorption guide column 321 can be retracted from the first positioning guide hole 311 at this time, so as to reserve a hole position for the drill rod 216 to pass through when drilling.

[0080] As can be seen from the above, the present application has the above-mentioned excellent properties, and can improve the performance of the prior art and has practicality, and becomes a product with high practical value.

[0081] The above is only a preferred embodiment of the present application. Those skilled in the art can make changes in specific embodiments and application scope according to the idea of the present application. The content of the specification should not be understood as a limitation of the present application.

Claims

1. A high-precision die-casting mold for fine holes in aluminum alloy parts, comprising a mold support, characterized in that: The mold support is formed with a longitudinally arranged longitudinal drive groove and a first transverse drive groove and a second transverse drive groove arranged laterally. The first transverse drive groove and the second transverse drive groove are coaxially aligned laterally. The first transverse drive groove, the second transverse drive groove and the longitudinal drive groove are perpendicularly connected to each other and form a cross groove structure. The longitudinal drive groove is provided with an upper mold module and a lower mold module. The upper mold module includes an upper mold plate and an upper mold core installed at the bottom of the upper mold plate. The lower mold module includes a lower mold plate and a lower mold core installed at the top of the lower mold plate. The upper mold core and the lower mold core form a mold cavity. A side drive plate installed in the first transverse drive groove is provided between the upper mold module and the lower mold module. The side drive plate is used to guide the lower mold to cooperate with the upper mold module. A fine hole forming mechanism is arranged in the forming cavity. The fine hole forming mechanism includes a forming guide seat slidably mounted on the lower mold core and a long rod that can approach or move away from the forming guide seat. The forming guide seat is formed with a forming guide hole for the long rod to be inserted. A first transverse drive slot is slidably mounted with a first transverse drive seat. A side mounting seat is mounted on the first transverse drive seat. The outer end of the long rod is mounted on the side mounting seat. The side drive plate is formed with a first through hole for the long rod to move through. The lower mold core is formed with a second through hole for the long rod to move through. The second transverse drive slot is provided with a drilling mechanism, which includes a drilling drive seat slidably installed in the second transverse drive slot, a drilling telescopic seat that can extend and retract laterally installed on the drilling drive seat, a drilling lifting seat that can move longitudinally installed on the drilling telescopic seat, and a drilling module installed on the top of the drilling lifting seat. The drilling module includes a drilling drive sleeve embedded in the drilling lifting seat, a rotating drive sleeve installed on the top of the drilling drive sleeve, and a pair of drill heads arranged at intervals on the rotating drive sleeve. The drill head includes a drill bit seat installed on the top of the rotating drive sleeve and a drill bit rod installed on the top of the drill bit seat. A pair of driven gears that can rotate and mesh with the driving gear are installed in the rotating drive sleeve. The two driven gears are arranged radially on the left and right sides of the driving gear, respectively. One driven gear rotates and drives one drill head to rotate, and the other driven gear rotates and drives the other drill head to rotate. The punching telescopic seat is also provided with a support lifting mechanism for supporting and positioning the product after casting. The support lifting mechanism includes a lifting positioning rod, and a support module that can hold the casting part is installed on the top of the lifting positioning rod.

2. The die-casting mold for fine holes in high-precision aluminum alloy parts according to claim 1, characterized in that: The longitudinal drive groove is also provided with a top drive seat located on the top of the upper module plate. The top drive seat can move up and down in the longitudinal drive groove. The top drive seat is provided with a positioning mechanism to prevent the product from falling off the upper mold core. The positioning mechanism includes a first positioning guide hole formed longitudinally in the upper mold module. A positioning guide post that can move longitudinally is slidably installed in the first positioning guide hole. The bottom surface shape of the positioning guide post is adapted to the upper mold core. The top drive seat is formed with a second positioning guide hole that is coaxially aligned with the first positioning guide hole.

3. The die-casting mold for fine holes in high-precision aluminum alloy parts according to claim 2, characterized in that: The top drive seat is provided with a first lifting mechanism that drives the positioning guide column to move up and down between the first positioning guide hole and the second positioning guide hole. The first lifting mechanism includes a first fitting groove formed along the length direction of the positioning guide column. The top drive seat is formed with a rack drive groove that communicates with the second positioning guide hole. A first drive gear that can rotate is installed in the rack drive groove. A first drive rack that meshes with the first drive gear is installed in the first fitting groove.

4. The die-casting mold for fine holes in high-precision aluminum alloy parts according to claim 3, characterized in that: The top of the upper module plate is provided with a connecting seat, the top drive seat is formed with a top drive groove, the top drive groove is installed with a top lifting cylinder, and the drive end of the top lifting cylinder is connected to the connecting seat; the first positioning guide hole is also slidably installed with an adsorption guide column that can move longitudinally, and an adsorption plate that fits with the casting is installed at the bottom of the adsorption guide column.

5. The die-casting mold for fine holes in high-precision aluminum alloy parts according to claim 4, characterized in that: The top drive seat is provided with a second lifting mechanism that drives the adsorption guide column to move up and down in the first positioning guide hole. The second lifting mechanism includes a side drive groove provided in the mold support, a lateral moving seat that can move laterally installed in the side drive groove, a folding rod that can move in multiple segments installed on the lateral moving seat, an adsorption drive seat installed at the end of the folding rod, an adsorption drive seat formed with an adsorption guide hole coaxially aligned with the first positioning guide hole, an adsorption guide column coaxially installed in the adsorption guide hole, a lead screw structure formed along the length of the outer ring of the adsorption guide column, and an adsorption transmission sleeve installed in the adsorption guide hole that is in transmission cooperation with the lead screw structure of the adsorption guide column.

6. The die-casting mold for fine holes in high-precision aluminum alloy parts according to claim 5, characterized in that: The folding rod includes a first movable rod, a second movable rod, and a third movable rod that are hinged in sequence. The other end of the first movable rod is connected to a transverse moving seat, and the other end of the third movable rod is connected to an adsorption driving seat. The outer wall of the upper module plate is vertically formed with an outer receiving groove for accommodating a portion of the folding rod.

7. A high-precision die-casting mold for fine holes in aluminum alloy parts according to claim 1 or 6, characterized in that: The rotary drive sleeve has a drill bit drive cavity formed inside. The drill bit drive cavity has a first drive groove coaxially aligned with the drilling drive sleeve and a pair of second drive grooves that cooperate with the drill bit. The second drive grooves are equipped with a power rod that is inserted into the drill bit seat, and the driven gear is sleeved on the power rod.

8. The die-casting mold for fine holes in high-precision aluminum alloy parts according to claim 7, characterized in that: The expansion module includes a top recess formed on the top of the lifting positioning rod, a buffer rod that can be elastically raised is installed in the top recess, a transverse drive hole is formed radially in the top recess, a buffer block that can be elastically moved inward is slidably installed in the transverse drive hole, a first inclined surface is formed at the bottom of the buffer rod, a second inclined surface that slides with the first inclined surface is formed at the inner end of the buffer block, a third inclined surface is formed at the outer end of the buffer block, a top annular groove is formed coaxially on the top of the lifting positioning rod, a support seat that can be elastically retracted is slidably installed in the top annular groove, and a fourth inclined surface that slides with the outer end of the buffer block is formed at the bottom of the support seat.

9. The die-casting mold for fine holes in high-precision aluminum alloy parts according to claim 8, characterized in that: A sliding module is provided between the upper mold module and the lower mold module. The sliding module includes an inclined guide rod installed on the upper mold plate and a sliding slider slidably installed on the lower mold core. The sliding slider is formed with an inclined guide hole for the inclined guide rod to move through. The lower mold core is formed with a bottom sliding groove for the sliding slider to move laterally. Side guide plates are installed on both sides of the bottom sliding groove. Side guide rails are formed along the length of the side guide plates. Side sliding blocks that slide with the side guide rails are formed on the side wall of the sliding slider. A forming guide seat is installed on the inner end face of the sliding slider. The sliding slider and the long bar are laterally coaxially aligned.

10. A die-casting mold for fine holes in high-precision aluminum alloy parts according to claim 9, characterized in that: The mold support is equipped with a first mold lifting cylinder at the top, and the drive end of the first mold lifting cylinder is connected to the top drive seat; the mold support is equipped with a second mold lifting cylinder at the bottom, and the drive end of the second mold lifting cylinder is connected to the bottom drive seat; the bottom drive seat has a demolding drive cavity formed at the top, and a demolding drive seat capable of lifting and lowering is installed in the demolding drive cavity. The demolding drive seat is equipped with multiple demolding rods. The lower mold core and the lower mold assembly plate are respectively coaxially formed with demolding holes for the demolding rods to pass through; a third mold telescopic cylinder is installed on the left side of the mold support, and the drive end of the third mold telescopic cylinder is connected to the punching drive seat of the second transverse drive groove.

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