Extrusion casting device for flat plate with reinforcing ribs

Abstract

The utility model discloses an extrusion casting device for a flat plate with reinforcing ribs. The extrusion casting device comprises a lower die assembly, an upper die, an upper die lifting device, a vibration impact device and a plurality of die cores, the lower mold assembly comprises a lower mold body and a pushing device, and the pushing device is used for demolding of a casting to be formed; the lower die body is provided with a bottom plane and a peripheral fence; the mold cores are arranged on the bottom plane of the lower mold body at intervals, the bottom planes of the mold cores are attached to the bottom plane of the lower mold body, and a fixing device is arranged between the mold cores and the lower mold body and has the two states of fixing the mold cores and the lower mold body and releasing fixing of the mold cores and the lower mold body. After the upper die descends and is closed, the fixing device controls the lower die body and the die cores to be in a fixing releasing state, the vibration impact device drives the upper die or the lower die to vibrate, a die closing or extrusion force bearing frame in traditional extrusion casting equipment is not needed, and the reinforcing rib die cores can move along with solidification and contraction of a casting. And the problem of casting bursting caused by the large size of the mold core in the extrusion casting process is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of casting devices, specifically to a kind of flat extrusion casting device with reinforcing rib. BACKGROUND

[0002] Flat casting with reinforcing rib has many needs in engineering applications, but it cannot be achieved due to the limitations of die casting and extrusion casting equipment, and the mold core cannot be made of metal core with good rigidity due to the large thermal shrinkage of large flat castings. Therefore, the flat castings with reinforcing rib can only be cast by using normal pressure sand casting method. UTILITY MODEL CONTENTS

[0003] To solve the above problems, the utility model provides a kind of flat extrusion casting device with reinforcing rib, which can effectively solve the deficiencies in the prior art.

[0004] The utility model is realized by the following technical solutions: a kind of flat extrusion casting device with reinforcing rib, comprising a lower die combination, an upper die, an upper die lifting device, a vibration impact device and a plurality of mold cores.

[0005] The lower die combination comprises a lower die body and a pushing device, and the pushing device is used for demolding the to-be-formed casting. The lower die body is provided with a bottom plane and a peripheral surrounding.

[0006] The mold cores are arranged on the bottom plane of the lower die body, the bottom plane of the mold core is attached to the bottom plane of the lower die body, and a fixing device is arranged between the mold core and the lower die body. The fixing device has two states of mutual fixation and release.

[0007] The lower die body has a plurality of through holes perpendicular to the bottom plane. The through holes are aligned with the reinforcing rib positions of the casting. The pushing device comprises a push rod and a push rod support. Each push rod is fixed to the push rod support. The push rod support drives each push rod to move up and down. The upper end of the push rod passes through the through hole and is aligned with the reinforcing rib position of the casting part.

[0008] The upper die lifting device drives the upper die to move up and down.

[0009] After the upper die rises, the metal liquid is poured into the lower die. After the upper die descends and the mold is closed, the fixing device controls the lower die body and each mold core to be in the released state. The metal liquid starts to cool and shrink. Each mold core can move with the casting. The vibration impact device drives the upper die or the lower die to vibrate. After casting is completed, the upper die rises before demolding. The fixing device fixes the lower die body and each mold core. The pushing device pushes the push rod support upward, and drives each push rod to eject the casting from the lower die combination.

[0010] As a preferred technical solution: the vibration impact device is an impact pick. The impact pick impacts the upper die.

[0011] As a preferred technical scheme: the impact pick can be an electric pneumatic pick, a power machine pneumatic pick, an air compressor pneumatic pick or a hydraulic impact pick.

[0012] As a preferred technical scheme: the impact pick is fixedly installed on the upper die or is placed on the upper die in a floating manner.

[0013] As a preferred technical scheme: the vibration impact device is a vibrator, and the vibrator is fixed on the upper die.

[0014] As a preferred technical scheme: the vibrator is fixed on the lower die.

[0015] As a preferred technical scheme: the positioning pin and the vertical positioning pull pin machine can be used for positioning and releasing positioning between the mold core and the lower die body.

[0016] As a preferred technical scheme: the hydraulic or pneumatic cylinder can be used for fixing and releasing fixing between the mold core and the lower die body through the pull rod.

[0017] As a preferred technical scheme: the position of the push rod through hole is aligned with the position of the reinforced rib after contraction.

[0018] As a preferred technical scheme: the upper die lifting device and the upper die are connected through a hanging rope or a spring.

[0019] The beneficial effects of the utility model are as follows: the vibration impact device directly impacts the upper die to replace the hydraulic power extrusion head in the extrusion casting process, the load-bearing frame in the extrusion casting device is cancelled, and the impact force of the impact pick can make the casting be complementarily shrunk or the upper die or the lower die can be relatively vibrated through the vibration device. DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the drawings without paying creative labor.

[0021] Figure 1 The aluminum alloy casting capable of being pressure cast or extrusion cast is schematically shown in the background art;

[0022] Figure 2 The aluminum alloy casting capable of being pressure cast or extrusion cast is shown in the plan view in the background art;

[0023] Figure 3 The aluminum alloy casting with burst edge capable of being pressure cast or extrusion cast is schematically shown in the background art;

[0024] Figure 4Schematic view of a die cast or squeeze cast webbed reinforced aluminum alloy casting with flash;

[0025] Figure 5 Schematic view of an aluminum alloy casting that can be squeeze cast;

[0026] Figure 6 Schematic view of a multi-cored, non-load-bearing frame squeeze casting mold;

[0027] Figure 7 Schematic view of a multi-cored, non-load-bearing frame squeeze casting mold core positioning lock removal;

[0028] Figure 8 Schematic view of a multi-cored, non-load-bearing frame squeeze casting impact process;

[0029] Figure 9 Schematic view of a multi-cored, non-load-bearing frame squeeze casting upper mold and impact component after rising;

[0030] Figure 10 Schematic view of a casting being ejected from a mold;

[0031] Figure 11 Schematic view of a flat plate plus impact bearing upper mold;

[0032] Figure 12 Schematic view of a mold core and lower mold relationship;

[0033] Figure 13 Schematic view of a mold core and vertical positioning pin relationship;

[0034] Figure 14 Schematic view of a lower mold and vertical positioning pin cooperation part;

[0035] Figure 15 Schematic view of an oil cylinder fixing mold core;

[0036] Figure 16 Schematic view of an impact force transmission block and upper mold plate fixed connection;

[0037] Figure 17 Schematic view of an upper mold plate plus surrounding profile;

[0038] Figure 18 Schematic view of a vibrator vibrating an upper mold;

[0039] Figure 19 Schematic view of a vibrator vibrating a lower mold;

[0040] BRIEF DESCRIPTION OF THE DRAWINGS:

[0041] 1, the pressure casting or extrusion casting parts figure; 2, the pressure casting extrusion casting will explode edge two figure; 3, the pressure casting extrusion casting edge explosion with grid reinforcement part figure; 4, extrusion casting part figure; 401, the cross-shaped rib formed by the gap between the edge plate; 5, the lower die assembly; 501, the lower die body; 502, the die core; 5011, the lower die positioning pin hole; 5012, the lower die pull rod through hole; 5013, the lower die die core fitting plane; 5021, the die core positioning pin hole; 5023, the die core and the lower die fitting plane; 6, the upper die; 601, the upper die plate with impact force transmission block; 6011, the connecting screw; 6012, the impact force transmission block positioning baffle; 602, the impact force transmission block; 7, the lower die core block positioning pin; 8, the lower die core block vertical pull pin; 801, the die core vertical positioning pin flange connecting rod; 802, the die core vertical positioning pin flange plane; 9, the ejector rod support; 10, the ejector rod; 11, the impact pick support; 12, the impact pick sleeve; 13, the impact pick; 14, the lower die core vertical tensioning kit; 1401, the pull rod; 1402, the pull pin; 1403, the oil cylinder; 1404, the door-shaped pressure bearing plate; 15, the vibrator; 16, the lower die vibrator connecting plate. DETAILED DESCRIPTION

[0042] All features disclosed in this specification, and / or all steps of any methods or processes disclosed in this specification, can be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive.

[0043] Any feature disclosed in this specification, unless stated otherwise, can be replaced by alternative features serving the same, equivalent or similar purpose.

[0044] Example 1

[0045] A reinforced plate extrusion casting device, comprising a lower die assembly 5, an upper die 6, an upper die lifting device, a vibration impact device and a plurality of die cores 502;

[0046] The lower die assembly comprises a lower die body 501 and a pushing device for demolding the to-be-formed casting; the lower die body is provided with a bottom plane and a peripheral surrounding frame;

[0047] The die cores are arranged on the bottom plane of the lower die body, the bottom plane of the die core is fitted with the bottom plane of the lower die body, and a fixing device is arranged between the die core and the lower die body, the fixing device having two states of mutual fixation and release;

[0048] The lower mold body has several through holes perpendicular to the bottom plane, the through holes are aligned with the reinforcing rib positions of the castings, the pushing device includes pushing rods and a pushing rod support, each pushing rod is fixed with the pushing rod support, the pushing rod support drives each pushing rod to move up and down, the upper end of the pushing rod passes through the through hole and is aligned with the reinforcing rib position of the cast part;

[0049] The upper mold lifting device drives the upper mold to move up and down;

[0050] After the upper mold is lowered to close the mold, the fixing device controls the lower mold body and each mold core to be in a state of being released from fixation, and the vibration impact device drives the upper mold or the lower mold to vibrate; after the casting is completed, the fixing device controls the lower mold body and each mold core to be in a state of relative fixation.

[0051] The technical scheme is used for casting large-area grid-reinforced plate castings, and the castings are used for building outer wall plates, the cast aluminum parts have a height of 3 meters and a width of 4 meters, the reinforcing rib interval is shown in the figure, the reinforcing rib thickness is 10 mm, the plate thickness is 5 mm, and the lower mold assembly is shown in the figure. Figure 5 Figure 1 Figure 6 The lower mold assembly 5 is composed of a lower mold body 501 and a plurality of mold cores 502, the lower mold body 501 has a lower mold core fitting plane 5013, the mold core 502 is fitted with the lower mold fitting plane 5023, and the mold core 502 can translate on the lower mold core fitting plane 5013, the lower mold body 501 and the mold core 502 respectively have corresponding positioning pin holes, and the mold core positioning pin 7 is inserted into the positioning pin hole before the metal liquid is poured into the mold, and the mold core positioning pin 7 is pulled out after the metal liquid is poured, the upper mold 6 and the upper mold lifting device are connected by a hanging rope, the outer shape of the upper mold 6 is matched with the gap between the periphery of the lower mold body, after the upper mold 6 is lowered, the vibration impact device (a plurality of impact picks 13 in this embodiment) starts to impact, the castings are solidified, the upper mold 6 and the impact pick 13 device are lifted, the pushing rod support 9 is pushed upward, a plurality of pushing rods 10 push the extrusion castings out of the lower mold body 501, and the casting process is completed. Figure 7 Figure 8 Figure 9 Figures 12-14 ​​​​​As shown, the positioning pin hole 5011 of the lower die body and the core positioning pin hole 5021 are aligned, respectively, the lower die body 501 is provided with a lower die body pull rod passing hole 5012, the lower die core block vertical pull pin 8 is installed below the die core 502, the lower surface of the die core 502 is attached to the matching plane 5023 of the lower die body, the distance between the lower surface of the die core 502 and the die core vertical positioning pin flange plane 802 of the lower die core block vertical pull pin 8 is H1, H1 is greater than the thickness H2 of the part matched with the lower die body 501, which is about 0.05 mm, the diameter of the die core vertical positioning pin flange connecting rod 801 part on the lower die core block vertical pull pin 8 is D1, and the diameter of the lower die body pull rod passing hole 5012 on the lower die body 501 is D2, the single-sided gap between D2 and D1 must be greater than the movement amount of the die core moving inward due to the shrinkage of the casting, and in this embodiment Figure 5 Taking the outer wall cast aluminum plate as an example, there are 80 cores, the maximum distance between two opposite corners is 5 meters, and the maximum core displacement of two opposite corners is 10 mm, so the maximum single-sided gap of D2 and D1 in the direction of casting shrinkage must be greater than 10 mm, and the size of a single cavity is 400*375 mm², and each cavity is matched with a 65-type electric jack, and in this embodiment, a 65-type electric jack produced by Wenzhou Fengba Electric Tool Co., Ltd. is used, and in actual use, the electric jack is modified, the switch is uniformly pressed, and the electric jack is controlled by PLC, and an electric jack sleeve 12 is added outside the electric jack. Figure 6 As shown, there is a gap between the electric jack sleeve 12 and the inner hole of the bracket 11 for the free movement of the electric jack, and the electric jack and the bracket 11 can also be fixed, and in addition to the electric jack, an oil pressure jack, a gas pressure jack, or a power machine jack can also be used to replace the impact function of the electric jack, and after casting is completed, a pushing mechanism (not shown in the figure) drives the pushing rod support 9 and the casting pushing rod 10 to push the casting upward.

[0052] In addition to connecting with a hanging rope, the upper die and the upper die lifting device can also be connected with a spring, so that the upper die can be impacted or vibrated when it is in a free state.

[0053] In this embodiment, the impact jack 13 transmits the impact force to the metal liquid and the semi-solid core metal through the upper die 6, effectively solving the problem of edge explosion of large planar castings with grid-shaped reinforcing ribs, and the casting in this embodiment is 12 square meters, and the normal extrusion casting bearing frame 1 must bear a force of more than 120,000 tons, which is difficult to achieve in actual engineering applications, but the use of impact jacks for extrusion can effectively solve this problem, and the movement between the core and the mold is set to move with the shrinkage of the casting, effectively solving the problem of pressure casting of large-area plate castings with reinforcing ribs.

[0054] Embodiment 2

[0055] Different from embodiment 1, the core vertical positioning method is different, as shown in Figure 15As shown, a lower die core vertical tensioning kit 14 replaces the lower die core block vertical tie 8. The lower die core vertical tensioning kit 14 consists of a tie rod 1401, a tie 1402, and a hydraulic cylinder 1403. The tie rod 1401 has an upper part fixedly connected to the die core 502 and a blind hole at the lower part. The end of the blind hole has a portal-shaped pressure plate 1404. The head of the tie 1402 is inside the blind hole. The lower part of the tie 1402 is controlled by a hydraulic cylinder 1403 or a pneumatic cylinder. When it moves downward, the head of the tie 1402 presses against the portal-shaped pressure plate 1404, pressing the die core 502 onto the lower die body 501. When the hydraulic cylinder 1403 or the pneumatic cylinder moves upward, the tie 1402 is released, and the die core 502 can move relative to the lower die body 501. When molten metal is poured and the casting ejector rod 10 pushes the extruded casting part upward, the die core 502 is released. Figure 4 At the same time, the rivet 1402 tightens the mold core 502. The unilateral gap between the rivet 1402 and the tie rod 1401, the portal bearing plate 1404, the tie rod 1401 and the lower mold tie rod of the lower mold body 501 through the hole 5012 conforms to the rule that the components do not interfere when the mold core is at its maximum displacement.

[0056] Example 3

[0057] Unlike Example 2, the relative positioning of the mold core 502 and the lower mold body 501 before pouring the molten metal does not need to be as described in Example 2. Figure 12 The lower mold positioning pin hole 5011, the mold core positioning pin hole 5021, and the lower mold core block positioning pin 7 shown can be achieved simply by placing each mold core 502 in the correct position. Figure 15 The hydraulic cylinder 1403 pulls down to press the mold core 502 onto the plane of the lower mold body 501 via the pull stud 1402, the portal-shaped pressure plate 1404, and the pull rod 1401. After casting is completed, the hydraulic cylinder 1403 is released, the clamping force between the mold core 502 and the lower mold body 501 is eliminated, and the mold core 502 can move with the shrinkage of the casting. After casting is completed, the hydraulic cylinder 1403 presses the mold core 502 and the lower mold body 501 together, and the ejector rod bracket 9 and the casting ejector rod 10 rise to push the casting out of the mold, thus completing the casting process.

[0058] Example 4

[0059] The upper mold structure differs from that of Example 1, such as... Figure 11 As shown, the upper mold 3 is composed of an upper template 601 with impact force transmission blocks and several impact force transmission blocks 602. Each impact force transmission block 602 has an independent component 1 above it. The effect of this embodiment is that the mutual interference of impact forces between various impact picks is reduced, resulting in higher impact efficiency. The specific structure is as follows: Figure 17 As shown, the upper template 601 and the impact force transmission block 602 are fixedly connected by a connecting screw 6011, as follows: Figure 17As shown in the figure, the impact force transmission block positioning baffle 6012 fixed on the impact force transmission block upper die plate 601 positions the impact force transmission block 602 in the horizontal direction.

[0060] Embodiment 5

[0061] Different from embodiment 1, the vibrator 15 in the embodiment is used to replace the impact pick 13 in embodiment 1. Figure 18 The Byes-12K intelligent full-automatic vibration aging machine produced by Byes Precision Instrument (Shanghai) Co., Ltd. is used in the embodiment, which is matched with a direct current permanent magnet motor vibrator with a rated power of 1KW and a maximum exciting force of 10KN.

[0062] Embodiment 6

[0063] Different from embodiment 5, as shown in the figure, the vibrator 15 is fixed on the lower die assembly 5 and is fixed on the lower die vibrator connecting plate 16 together with the lower die assembly 5. Figure 19

[0064] The beneficial effect of the utility model is: the casting mold can realize large area extrusion casting without traditional extrusion casting equipment die or extrusion force bearing frame by impact of the impact pick or vibration of the vibration device, and the several reinforcing rib mold cores are arranged on the mold plane and can move with the solidification shrinkage of the casting, so that the problem of the edge explosion of the casting in the extrusion casting process caused by the large size of the mold core is solved.

[0065] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any change or replacement without creative labor should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be limited by the protection scope defined in the claims.​

Claims

1. A plate extrusion casting apparatus with reinforcing ribs, characterized by: The invention relates to a casting device, which comprises an upper mold, an upper mold lifting device, a vibration and impact device, a lower mold body and a plurality of mold cores. The lower mold body is provided with a bottom plane and a peripheral wall. The mold cores are provided with a bottom plane which is in close contact with the bottom plane of the lower mold body. A mutual fixing device is arranged between the two bottom planes. The fixing device is arranged to fix or release the two bottom planes. A plurality of through holes are arranged on the lower mold body and are in alignment with the positions of the reinforcing ribs. A push rod is arranged in each through hole. A push rod support is also arranged. Each push rod is fixed to the push rod support. The push device drives the push rod support to move up and down, and the upper mold is driven to move up and down by the upper mold lifting device. The lower mold body and the mold cores are fixed relative to each other by the fixing device. After the upper mold is lifted, the molten metal is poured into the lower mold. After the upper mold is lowered to close the mold, the fixing device releases the relative fixation between the lower mold body and the mold cores. The molten metal begins to cool and shrink. The mold cores move with the shrinkage of the casting. The impact or vibration device drives the upper mold or the lower mold to vibrate. After the casting is completed, the upper mold is lifted before the mold is removed. The lower mold body and the mold cores are fixed by the fixing device. The push rod support is driven upward by the push device, and the casting is pushed out of the lower mold body by the push rods. The impact or vibration device is an impact device. The impact device transmits the impact force to the molten metal and the semi-solid metal through the upper mold. The impact force of the impact device allows the casting to be shrinkage compensated. Alternatively, the vibration device drives the upper mold or the lower mold body to vibrate relative to each other. The impact device is fixed or floating relative to the upper mold. The vibrator is fixed to the upper mold or the lower mold body. The mold cores and the lower mold body can be positioned and released by the positioning pin and the vertical direction positioning draw pin machine. Alternatively, the mold cores and the lower mold body are fixed and released by the hydraulic or pneumatic cylinder through the draw bar. The position of the push rod through hole is aligned with the position of the reinforcing rib after shrinkage. The upper mold lifting device and the upper mold are connected by a rope or a spring.

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