CN212526015U

CN212526015U - Center ejection horizontal low-pressure casting machine

Info

Publication number: CN212526015U
Application number: CN202021119384.6U
Authority: CN
Inventors: 高川; 高玉良; 尹悦来
Original assignee: Fuxin City Wanda Foundry Co ltd
Current assignee: Fuxin City Wanda Foundry Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-02-12
Anticipated expiration: 2030-06-17

Abstract

The utility model belongs to non ferrous metal casting production facility among the machinery trade, in particular to ejecting horizontal low pressure casting machine in center. The left side and the right side above the workbench are symmetrically and fixedly provided with a mold opening and closing mechanism and a central ejection mechanism with the same structure in the horizontal direction, and a movable mold locking mechanism is arranged above the mold; the mold locking mechanism is arranged at different positions according to different mold structures, the central positioning plate is parallel to the movable plate, the mold locking mechanism is arranged on the upper surface or the upper side surface of the mold, and the lower surface of the mold locking inclined iron is provided with a wedge-shaped groove to be connected with the mold for locking. The casting machine can solve the problems that the casting inclines towards the direction of the mold wrapping force in the opening process due to the fact that the casting is large, the mold wrapping force of the irregular structure is not uniformly distributed, and the mold wrapping forces of two parting sides are different, so that the casting is deformed, cracked and even broken, and the quality of the casting is guaranteed. The casting machine is compact in structure and convenient to operate, and the long pouring position of the workbench is designed, so that the requirement of the casting process of the double-pouring gate can be met.

Description

Center ejection horizontal low-pressure casting machine

Technical Field

The utility model belongs to non ferrous metal casting production facility among the machinery trade, in particular to ejecting horizontal low pressure casting machine in center.

Background

At present, a metal mold low-pressure casting process is used for producing non-ferrous metal castings mainly by using a vertical and a horizontal low-pressure casting machines, wherein the vertical low-pressure casting machine has the advantages of being capable of being positioned in the center, convenient to eject and uniform in stress of a template, and has the defects that the installation surface of a die is small due to the limitation of four columns, the die is installed due to the limitation of an upper template, and the casting is inconvenient to take out; the horizontal low-pressure casting machine has the advantages that the installation of the die and the taking out of the casting are convenient, the installation space of the die is large, the die is very suitable for the production of large castings, and the die has the defects that due to various reasons such as the structure of parts, the design and processing of the die, the use of coatings and the like, the left die opening force and the right die opening force are unbalanced in the production process, so that the casting is pulled to be deviated in the die opening process, the casting is deformed, cracked or even broken, the repair and the rejection rate of the casting are increased, and the service life of the workbench is influenced by the; although the horizontal low-pressure casting machine has enough space to be suitable for the production of large parts, the production of large castings is limited due to the fact that a runner is too long and the temperature gradient of metal liquid in the pouring process is large.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned technique not enough, provide a simple structure, convenient operation, the ejecting horizontal low pressure casting machine in center that production efficiency is high.

The utility model provides a technical scheme that technical problem adopted is: the center-ejection horizontal low-pressure casting machine comprises a workbench, a support column, a hydraulic power system and a lifting mechanism, and is characterized in that a mold opening and closing mechanism and a center ejection mechanism with the same structure are symmetrically and fixedly arranged on the left side and the right side of the upper part of the workbench in the horizontal direction, and a movable mold locking mechanism is arranged above a mold; the mold locking mechanism is arranged at different positions according to different mold structures, the mold opening and closing mechanism is characterized in that two symmetrical static plates with two guide sleeves which are parallel up and down are vertically fixed on the left side and the right side of a workbench, guide bars penetrate through the two guide sleeves on the static plates, the left end of the left guide bar is fixedly connected with the right side of a support plate, the right end of the guide bar is fixedly connected with the left side of a movable plate, the left end of the right guide bar is fixedly connected with the right side of the movable plate, the right end of the guide bar is fixedly connected with the left side of the support plate, mold closing cylinders are fixedly arranged in the horizontal direction in the middle between the support plates on the left side and the right side and the static plates, and the two movable plates are vertically and parallelly arranged in the middle part; the central ejection mechanism is arranged in a left-right symmetrical mode at the center positions of a static plate and a guide bar of the left-right mold opening and closing mechanism, and a central positioning plate is arranged at the upper and lower parallel guide sleeves; the central positioning plate is parallel to the movable plate, the piston rod ends of the two central ejection cylinders are fixedly connected in parallel in the horizontal direction of the center of the left side surface of the central positioning plate by a first connecting nut, and the four central ejection rods are fixedly connected in parallel up and down on the right end surface of the central positioning plate; the mould locking mechanism is arranged on the upper surface or the upper side surface of the mould, the upper support is fixed on the lower support through bolts by the mould locking mechanism, a mould locking oil cylinder is arranged on a boss on one side of the upper support, the piston rod end of the mould locking oil cylinder is connected with the upper plane of the mould locking inclined iron through a dual-purpose bolt of a connecting nut, and the lower surface of the mould locking inclined iron is provided with a wedge-shaped groove to be connected with the mould for locking.

The utility model has the advantages that: the central ejection horizontal low-pressure casting machine can solve the problems that the casting inclines towards the direction of the die-wrapping force in the opening process due to large casting, uneven distribution of the die-wrapping force of irregular structures and different die-wrapping forces on two sides of parting, so that the casting is deformed, cracked and even broken, and the quality of the casting is ensured. The casting machine is compact in structure and convenient to operate, and the long pouring position of the workbench is designed, so that the requirement of the casting process of the double-pouring gate can be met.

Drawings

The following description is made in detail by way of example with reference to the accompanying drawings.

FIG. 1 is a front view of a structure of a center-lift horizontal low-pressure casting machine.

FIG. 2 is a front view of the hydraulic power system of the caster.

Fig. 3 is a top view of the mold-clamping mechanism of fig. 1 taken away.

Fig. 4 is a top view of fig. 2.

Fig. 5 is a front view of the structure of the opening and closing mechanism in fig. 1.

Fig. 6 is a top view of fig. 5.

Fig. 7 is a front view of the ejection mechanism of fig. 1.

Fig. 8 is a top view of fig. 7.

Fig. 9 is a structural sectional view of the mold clamping mechanism of fig. 1.

Fig. 10 is a front view of the table structure of fig. 1.

Fig. 11 is a top view of fig. 10.

In the figure: 1-a mold opening and closing mechanism; 1-1-a support plate; 1-2-stationary plate; 1-3-a guide sleeve; 1-4-mold clamping cylinder; 1-5-guide bar; 1-6-moving plate; 2-an ejection mechanism; 2-1-center knockout cylinder; 2-2-connecting a first nut; 2-3-a guide sleeve; 2-4-a central positioning plate; 2-5-central ejector rod; 3-a mould locking mechanism; 3-1-locking mould oil cylinder; 3-2-upper support; 3-3-connecting a second nut; 3-4-lower support; 3-5-mode locking inclined iron; 3-6-a mould locking mechanism mounting rack; 4-a workbench; 4-1-support column; 4-2-intermediate stage; 4-3-central positioning hole; 4-4-positioning holes; 4-5-worktable support ribs; 5-a hydraulic power system; 5-1-motor; 5-2-pump; 5-3-oil tank; 5-4-valve group; 5-5-flow meter; 5-6-base; 6-lifting mechanism.

Detailed Description

In the embodiment, referring to the attached figures 1-11, a hollow workbench 4 with workbench support ribs 4-5 is fixed above four support columns 4-1, a central positioning hole 4-3 is arranged at the center of the upper surface of the workbench 4, two rows of two positioning holes 4-4 are arranged in parallel at the left side and the right side of the workbench 4, and a rectangular middle platform 4-2 is fixed above the workbench 4. The left side and the right side above the workbench 4 are symmetrically and fixedly provided with a mold opening and closing mechanism 1 and a center ejection mechanism 2 which have the same structure in the horizontal direction, and a mold locking mechanism 3 is arranged at the center above the middle platform 4-2 above the workbench 4. The mold opening and closing mechanism 1 is characterized in that two symmetrical static plates 1-2 with two guide sleeves 1-3 which are parallel up and down are vertically fixed on the left side surface and the right side surface of a workbench 4, guide bars 1-5 penetrate through the two guide sleeves 1-3 on the static plates 1-2, the left end of the left guide bar 1-5 is fixedly connected with the right side surface of a supporting plate 1-1, and the right end of the guide bar 1-5 is fixedly connected with the left side surface of a movable plate 1-6. The left end of the right guide bar 1-5 is fixedly connected with the right side surface of the movable plate 1-6, and the right end of the guide bar 1-5 is fixedly connected with the left side surface of the support plate 1-1. A mould clamping cylinder 1-4 is fixedly arranged in the middle between the supporting plate 1-1 and the static plate 1-2 at the left side and the right side in the horizontal direction, and the two movable plates 1-6 are vertically and parallelly arranged in the middle above the middle platform 4-2. The central ejection mechanism 2 is arranged in bilateral symmetry at the central positions of the static plate 1-2 and the guide bar 1-5 of the left and right mould opening and closing mechanism 1. A central positioning plate 2-4 is arranged at the upper and lower parallel guide sleeves 2-3, the central positioning plate 2-4 is parallel to a movable plate 1-6, and the piston rod ends of two central ejection cylinders 2-1 are fixedly connected in parallel in the horizontal direction at the center of the left side surface of the central positioning plate 2-4 by connecting nuts 2-2. Four central ejector rods 2-5 are fixedly connected with the right end surface of the central positioning plate in an up-down parallel manner. A clamping mechanism 3 is arranged in the middle above the middle platform 4-2 on the workbench 4, and the clamping mechanism 3 is arranged on the upper surface or the upper side surface of the die. The mold locking mechanism 3 is characterized in that an upper support 3-2 is fixed on a lower support 3-4 through bolts, a mold locking oil cylinder 3-1 is arranged on a boss at one side of the upper support 3-2, a piston rod end of the mold locking oil cylinder 3-1 is connected with an upper plane of a locking inclined iron 3-5 through a connecting nut 3-3 through bolts, a wedge-shaped groove is arranged below the locking inclined iron 3-5 to be connected with a mold for locking, the mold locking mechanism 3 is integrally arranged on a locking mechanism mounting frame 3-6 above two parallel movable plates 1-6, a hydraulic power system 5 is independently arranged on an external base 5-6 of a casting machine, an oil tank 5-3 is fixed on the base 5-6, a valve bank 5-4 is arranged on the oil tank 5-3, a flow meter 5-5 is arranged on the left side of the oil tank 5-3, a motor 5-1 is fixed on the right side of the, the motor 5-1 is connected with the pump 5-2. The hydraulic power system 5 provides 12Mpa hydraulic power for the whole machine and is connected with each mechanism of the casting machine by a pressure pipeline. Three lifting mechanisms 6 are arranged in the middle of a support column 4-1 of the workbench 4 and used for lifting the electric furnace, and the casting mold is arranged between a left movable plate 1 and a right movable plate 6 of the mold opening and closing mechanism 1.

The utility model discloses a working process is: when the mould is in work, firstly, a proper central loose piece or a proper central positioning hole 4-3 is designed according to the casting process requirement in the mould design process, a mould for production is respectively arranged on a bottom plate and a left mould opening and closing mechanism 1 and a right mould opening and closing mechanism 1, the proper central positioning hole 4-3 is selected to be arranged with the central positioning loose piece or the central positioning rod, a mould locking mechanism 3 is arranged, a hydraulic system 5 is adjusted, and the system pressure is ensured to be 12 Mpa; the mold opening and closing mechanism 1 and the central ejection mechanism 2 synchronously operate to move forward and close the mold, the mold closing and locking mechanism 3 moves forward to lock the mold 3-5 by using a wedge, the hydraulic power system 5 maintains pressure, then the mold filling device is used for filling, pressurizing, maintaining pressure and cooling the casting according to the casting process, the cooling time is up, the side mold opening and closing mechanism 1 is used for loosing the core, the mold locking mechanism 3 retreats to release the mold after the core is pulled in place, the central ejection rod 2-5 is kept still, the mold opening and closing mechanism 1 opens the mold to a set position, then the central ejection mechanism 2 starts to work to retreat and retreat in place, the mold opening and closing mechanism 1 starts to open the mold, the casting is taken out after the mold is opened in place, and a production.

Claims

1. A center-ejection horizontal low-pressure casting machine comprises a workbench (4), support columns (4-1), a hydraulic power system (5) and a lifting mechanism (6), and is characterized in that a mold opening and closing mechanism (1) and a center ejection mechanism (2) which have the same structure are symmetrically and fixedly arranged on the left side and the right side of the upper part of the workbench (4) in the horizontal direction, and a movable mold locking mechanism (3) is arranged above a mold; the clamping mechanism (3) is arranged at different positions according to different die structures.

2. The center-ejecting horizontal low-pressure casting machine according to claim 1, characterized in that the mold opening and closing mechanism (1) is formed by vertically fixing two symmetrical fixed plates (1-2) with two guide sleeves (1-3) which are parallel up and down on the left and right sides of the worktable (4), a guide bar (1-5) is arranged in the two guide sleeves (1-3) on the fixed plates (1-2) in a penetrating way, the left end of the guide bar (1-5) on the left side is fixedly connected with the right side surface of the supporting plate (1-1), the right end of the guide bar (1-5) on the right side is fixedly connected with the left side surface of the movable plate (1-6), the left end of the guide bar (1-5) on the right side is fixedly connected with the right side surface of the movable plate (1-6), the right end of the guide bar (1-5) on the right side is fixedly connected with the left side surface of the supporting, a mould clamping cylinder (1-4) is fixedly arranged in the middle between the supporting plate (1-1) and the static plate (1-2) at the left side and the right side in the horizontal direction, and the two movable plates (1-6) are vertically and parallelly arranged in the middle above the middle platform (4-2).

3. The center-ejecting horizontal low-pressure casting machine according to claim 1, characterized in that the center-ejecting mechanism (2) is arranged symmetrically at the center of the stationary plate (1-2) and the guide bar (1-5) of the left-right mold opening and closing mechanism (1), and a center positioning plate (2-4) is arranged at the upper and lower parallel guide sleeves (2-3); the central positioning plate (2-4) is parallel to the movable plate (1-6), the piston rod ends of the two central ejection cylinders (2-1) are fixedly connected in parallel in the horizontal direction of the center of the left side surface of the central positioning plate (2-4) through a first connecting nut (2-2), and the four central ejection rods (2-5) are fixedly connected in parallel up and down on the right end surface of the central positioning plate (2-4).

4. The center-ejecting horizontal low-pressure casting machine according to claim 1, characterized in that the mold locking mechanism (3) is installed on the upper surface or the upper side surface of the mold, the mold locking mechanism (3) fixes the upper bracket (3-2) on the lower bracket (3-4) by bolts, a mold locking oil cylinder (3-1) is installed on a boss on one side of the upper bracket (3-2), the piston rod end of the mold locking oil cylinder (3-1) is connected with the upper plane of the mold locking inclined iron (3-5) by bolts through a second connecting nut (3-3), and the lower surface of the mold locking inclined iron (3-5) is connected with the mold by a wedge groove for locking.