CN-116197366-B - Copper alloy glass die casting precoated sand annular pouring line

CN116197366BCN 116197366 BCN116197366 BCN 116197366BCN-116197366-B

Abstract

The invention discloses a copper alloy glass die casting precoated sand annular pouring line which comprises an annular guide rail, wherein a plurality of conveying trolleys are uniformly arranged at the upper part of the annular guide rail, two adjacent conveying trolleys are sequentially connected in a head-tail rotation mode through universal joints, two groups of driving mechanisms for driving the conveying trolleys to move are arranged at the lower part of the annular guide rail, sand boxes are respectively arranged on the trolleys, each sand box is of an upper opening structure and a lower opening structure, a filler collecting warehouse, sand box pouring positions and vibration conveying screening machines are sequentially arranged at the outer part of the annular guide rail, a screw feeder communicated with the lower end of the filler collecting warehouse is in a funnel shape, and a pushing type box taking mechanism is arranged between the vibration conveying screening machines and the annular guide rail. The invention can automatically complete the procedures of sand box filling, box pushing, box taking, conveying, shakeout and the like, reduces the labor intensity of workers, shortens the labor time and can greatly improve the production efficiency of castings.

Inventors

ZHANG SHENGDE
ZHANG HAILING
BAI ZHIJIE
ZHANG SHENGJIE
WANG LIUZHANG

Assignees

河北聚盛宏鑫模具科技有限公司

Dates

Publication Date: 20260508
Application Date: 20230308

Claims (8)

1. The copper alloy glass die casting precoated sand annular pouring line is characterized by comprising an annular guide rail, wherein the annular guide rail comprises two internally and externally arranged oblong rails, a plurality of conveying trolleys are uniformly arranged at the upper part of the annular guide rail, every two adjacent conveying trolleys are respectively connected in a head-to-tail rotation mode through universal joints in sequence, two groups of driving mechanisms for driving the conveying trolleys to move are arranged at the lower part of the annular guide rail, sand boxes are respectively arranged on the trolleys, each sand box is of an upper opening structure and a lower opening structure, a filler collecting warehouse, sand box pouring positions and a vibrating conveying screening machine are sequentially arranged at the outer part of the annular guide rail, a screw feeder communicated with the lower end of the filler collecting warehouse is in a funnel shape, and a pushing box taking mechanism is arranged between the vibrating conveying screening machine and the annular guide rail; The driving mechanism comprises a first telescopic rod fixedly arranged on the ground, the telescopic end of the first telescopic rod is fixedly connected with one end of a driving platform which is arranged at the bottom of the straight line section of the annular guide rail in a sliding manner, two groups of second pulleys which are respectively matched with two oblong rails are rotatably arranged on the upper part of the driving platform, a box pushing handle is hinged to the other end of the driving platform, the end part of the box pushing handle is in a hooked hand structure, and a spring is arranged between the box pushing handle and the driving platform; the pushing box taking mechanism comprises a second frame fixedly arranged outside the vibrating conveying screening machine and the annular guide rail, a pushing platform is arranged on the second frame, motors are respectively arranged at two ends of the pushing platform, driving shafts of the motors are respectively connected with the input ends of the double-output shaft speed reducer, the two output shafts of the double-output shaft speed reducer are respectively provided with a transmission gear, and each transmission gear is respectively meshed with a transmission rack symmetrically arranged on the second rack; two groups of rollers which are respectively contacted with the upper surface and the side surface of the second rack are rotatably arranged at two ends of the upper part of the pushing platform; the upper part of the pushing platform is fixedly provided with a vertical fourth telescopic rod, the telescopic ends of the fourth telescopic rods are fixedly connected with the second lifting frames, two fifth telescopic rods are symmetrically arranged on the second lifting frames, the telescopic ends of the fifth telescopic rods are fixedly connected with the second grabbing frames, and second grabbing hooks are arranged on the side parts of the second grabbing frames; a pushing frame is fixedly arranged at the bottom of the pushing platform, two sixth telescopic rods are symmetrically arranged at the bottom of the pushing frame, and pushing blocks are fixedly arranged at the end parts of the sixth telescopic rods respectively; when in work, the push block is contacted with the sand box through the extension of the two sixth telescopic rods, after the two motors are started, the push platform moves linearly along the second frame, the sand box is pushed to the vibration screening machine by the conveying trolley, then the second grabbing hook of the second grabbing frame is matched with the matched inclined plate of the sand box through the two fifth telescopic rods, the sand box can be lifted upwards by the fourth telescopic rods after shrinkage, and the empty sand box is placed back to the conveying trolley of the annular pouring line by the box pushing mechanism after sand falling.
2. The copper alloy glass die casting precoated sand annular pouring line of claim 1 is characterized in that the intervals among all parts of two oblong rails are the same, and two groups of first pulleys respectively matched with the two oblong rails are arranged at the bottom of the conveying trolley.
3. The copper alloy glass die casting precoated sand annular pouring line of claim 2, wherein a plurality of pairs of supporting legs are uniformly arranged on the ground below the annular guide rail, a pair of fixing plates are respectively arranged between each pair of supporting legs, cross beams are fixedly arranged on the upper parts of two supporting legs of each pair, the bottom of the annular guide rail is fixedly connected with the upper parts of the cross beams, and two sides of the annular guide rail are fixedly connected with the fixing plates.
4. The copper alloy glass die casting precoated sand annular pouring line of claim 1, wherein a sand box picking and placing mechanism is arranged on the outer side of the filler collection warehouse and comprises a first rack, a vertical second telescopic rod is fixedly arranged in the middle of the first rack, the telescopic end of the second telescopic rod is fixedly connected with a first lifting frame which is slidably arranged on the first rack, two horizontal third telescopic rods are symmetrically arranged on the upper portion of the first lifting frame, the free ends of the two third telescopic rods are fixedly connected with first grabbing frames which are symmetrically and slidably arranged on the first lifting frame respectively, a first grabbing hook is arranged on the side portion of each first grabbing frame, and two matched inclined plates are obliquely arranged on the two sides of each sand box respectively.
5. The copper alloy glass die casting precoated sand annular pouring line of claim 1 is characterized in that a first gas collecting hood is covered on the outer side of the vibrating conveying screening machine and the outer side of the pushing type box taking mechanism, the upper portion of the first gas collecting hood is communicated with a first cloth bag dust remover through a first waste gas conveying pipeline, an upper discharge hole of the vibrating conveying screening machine is communicated with an external casting block sand collecting hopper, and a lower discharge hole of the vibrating conveying screening machine is communicated with an external sand micro powder collecting hopper.
6. The precoated sand annular casting line for copper alloy glass die castings, according to claim 5, wherein the sand micro powder collection hopper is communicated with the filler collection warehouse through a steel sand lifter.
7. The copper alloy glass die casting precoated sand annular pouring line of claim 1, wherein a side suction dust hood is arranged on the side surface above the pouring position of the sand box, and is communicated with a second cloth bag dust collector and a double-stage activated carbon adsorption box through a second waste gas conveying pipeline.
8. The copper alloy glass die casting precoated sand annular pouring line of claim 7, wherein a second gas collecting hood is fixedly arranged above a part, close to a pouring position of the sand box, of the annular guide rail, and the upper part of the second gas collecting hood is communicated with the second cloth bag dust collector and the two-stage activated carbon adsorption box through a third gas conveying pipeline.

Description

Copper alloy glass die casting precoated sand annular pouring line Technical Field The invention relates to the technical field of precoated sand molding pouring production lines, in particular to a copper alloy glass die casting precoated sand annular pouring line. Background In the casting process of copper alloy glass mould castings, clay sand molding, resin sand molding and precoated sand molding are commonly used. The clay sand molding process needs to add the combustion improver coal dust with larger proportion, which is mainly used for increasing the appearance quality and the air permeability of living parts, and the coal dust can not be recycled when added into the sand, so that the waste of resources is caused. The clay sand molding sand mould has low hardness and large yielding property, and casting defects such as a casting movable piece expansion box, sand expansion, sand falling, air holes, shrinkage porosity and the like are serious, so that the appearance of a product is poor, meanwhile, the inherent casting defects of the product are large, the service life of the product is seriously influenced, and the rejection rate is high. The resin sand casting has good quality and low rejection rate, but if the control is improper in the aspects of raw material selection, process design, molding (core) operation, production management and the like, the casting can generate defects such as air holes, pinholes, cracks and the like, even is scrapped in batches, and the resin sand casting has poor thermal conductivity, and the metal liquid has low cooling and solidification speed, so that the hardness of the casting is lower. The precoated sand casting is to coat a layer of solid resin film on the surface of a hard mould during molding and core making. Compared with the resin sand process, the addition of solid resin and curing agent is greatly reduced, the production cost is reduced while the emission of harmful gas is reduced, and the used waste sand can be recycled, so that the working site is kept clean and has no dust pollution. The aggregate in the precoated sand molding is roasted at high temperature, so that the expansion amount of the sand mold after combustion is reduced, the strength of the solidified sand mold is high, the gas generation amount is small, and the like, and the produced product is far superior to the product produced by the clay sand molding in aspects of appearance quality, inherent casting defects, dimensional accuracy of the product, and the like. In addition, as the cooling speed is high during casting of the precoated sand, the graphite form of the casting is greatly improved, the mechanical property of the product is improved, and the service life of the product is prolonged. Therefore, the invention develops a precoated sand buried box annular casting line for producing the copper alloy glass die casting according to the technological requirements of the copper alloy glass die casting, and solves the technical problems of poor yield and quality and casting defects of the copper alloy glass die casting in the prior art. Disclosure of Invention The invention aims to provide a copper alloy glass die casting precoated sand annular pouring line, which solves the technical problems in the prior art mentioned in the background art. In order to solve the technical problems, the invention adopts the following technical scheme: The invention discloses a copper alloy glass die casting precoated sand annular pouring line which comprises an annular guide rail, wherein a plurality of conveying trolleys are uniformly arranged on the upper portion of the annular guide rail, every two adjacent conveying trolleys are sequentially connected in an end-to-end rotation mode through universal joints, two groups of driving mechanisms for driving the conveying trolleys to move are arranged on the lower portion of the annular guide rail, sand boxes are respectively arranged on the trolleys, each sand box is of an upper opening structure, a filler collecting warehouse, sand boxes, pouring positions and vibration conveying screening machines are sequentially arranged on the outer portion of the annular guide rail, the lower end of each filler collecting warehouse is in a funnel shape, a spiral feeder communicated with the inner portion of each filler collecting warehouse is arranged at the lower end of each filler collecting warehouse, and a pushing type box taking mechanism is arranged between each vibration conveying screening machine and the annular guide rail. Further, the annular guide rail comprises two oblong rails which are arranged inside and outside, the distances between all parts of the two oblong rails are the same, and two groups of first pulleys which are respectively matched with the two oblong rails are arranged at the bottom of the conveying trolley. Further, a plurality of pairs of supporting legs are uniformly arranged on the ground below the annular guide rail, a pair of fixing