CN223083777U - A casting sand mold box-off molding device - Google Patents

Abstract

The invention discloses a casting sand mold box-demolding device, which relates to the field of casting sand mold molding devices, and comprises a mold frame, a mold base plate, a sand mold pattern, a sand mold outer frame, a cylinder, a push rod base plate and a push rod. The upper end surface of the mold frame is a molding operation platform with the mold base plate installed. The sand mold pattern is limitedly placed on the mold base plate, the sand mold outer frame is fixedly installed on the mold base plate, the sand mold pattern can be combined with the sand mold outer frame to form the outer contour of the casting sand mold structure, the push rod base plate is balanced and hung on the lower part of the mold base plate by a push rod guide rod vertically installed on the mold base plate, the upper end surface of the push rod is kept flush with the parting surface of the sand mold pattern when the push rod base plate is naturally suspended, the cylinder is arranged at the lower part of the push rod base plate, and the device uses the push rod to push the casting sand mold to realize the overall mechanized pneumatic control of the casting sand mold to be demolded and box-demolded, so as to ensure the preparation quality of the casting sand mold and the accuracy and quality stability of its structure, reduce the labor intensity of workers, improve production work efficiency and reduce production input costs.

Description

Casting sand mould slip flask molding device

Technical Field

The utility model relates to the field of casting sand mould molding devices, in particular to a casting sand mould slip flask molding device.

Background

In casting production, the traditional preparation method of the casting sand mould generally adopts a box molding process, a split sand box mould assembling combined structure of horizontal parting is generally used, after sand injection molding is finished, split sand boxes are split for mould stripping, the combined box type molding method is characterized in that the mould assembling, the mould separating and the mould stripping are manually operated under the assistance of a manual operation or a mechanical device, the sand box has the advantages that the labor intensity is high, the working efficiency is low, in addition, the butt joint error exists in the sand box combination box body, the structural accuracy and the quality stability of the prepared sand mould are directly influenced, the surface damage of the prepared sand mould is extremely easy to cause in the box separation and stripping processes, the preparation quality of the sand mould is damaged, and the casting quality of castings is influenced. Therefore, the process method utilizes the combined mold box to replace the traditional integral sand box for preparing the casting sand mold, and removes the mold box after the casting sand mold molding is finished, so that the casting sand mold and the mold box are mutually separated, the production labor intensity can be effectively reduced in the production application, the production work efficiency is improved, the casting sand mold precision is improved to a certain extent, and the casting sand mold quality is improved. However, as the existing slip flask molding process popularized and applied in production adopts a removal method of a split flask to separate a casting sand mold, obviously, the risk of damaging the surface quality of the casting sand mold still exists in the process of manually stripping the split combined flask on the casting sand mold which is molded, and the process still has further space and potential in the aspects of labor intensity reduction and production efficiency improvement. Therefore, a new method for researching and exploring a casting sand mould slip flask molding process is necessary, and a new casting sand mould slip flask molding device is developed in a matched manner, so that the problems in the prior art are solved.

Disclosure of utility model

The utility model aims to provide a casting sand mould slip flask molding device, which reduces the labor intensity of workers for casting sand mould slip flask molding, improves the production work efficiency and ensures the casting sand mould quality.

A casting sand mold slip flask molding device comprises a die carrier, a die bottom plate, a sand mold pattern, a sand mold outer frame, a cylinder, a top rod bottom plate and top rods arranged on the top rod bottom plate, wherein the die carrier is a structural frame body, the upper end face of the die carrier is a molding operation platform, the bottom plate is fixedly arranged on the molding operation platform, a limiting structure mutually corresponding to the sand mold pattern structure and a connecting structure mutually corresponding to the sand mold outer frame structure are arranged on the surface of the die bottom plate, when the sand mold pattern is limited and placed on the die bottom plate, the sand mold pattern can be matched and combined with the sand mold outer frame of a side wall protection frame body structure to form the outer contour of a casting sand mold structure, then sand filling molding can be carried out in the outer contour of the sand mold structure, the outer contour of the sand mold structure is of an unobstructed structure corresponding to the upper end, the casting prepared by sand filling molding in the outer contour of the sand mold structure can be vertically moved out of the upper end opening of the outer contour of the sand mold structure, the top rod is horizontally arranged on the die bottom plate, a guide rod vertically arranged on the upper end face of the bottom plate is vertically arranged by the top rod, the top rod vertically arranged on the bottom plate is vertically arranged by the top rod vertically arranged on the bottom plate, and the guide rod vertically arranged on the top end face of the bottom plate is vertically arranged by the top rod vertically arranged on the top rod, the upper end face of the ejector rod is kept flush with the parting surface of the sand mold pattern at the corresponding position, the air cylinder is correspondingly arranged at the lower part of the ejector rod bottom plate and fixedly connected to the mold frame, and the ejector rod bottom plate can be pushed to move upwards by the power drive of the air cylinder, so that the ejector rod is lifted and stretches into the outer contour of the sand mold structure, and the prepared casting sand mold is ejected from the outer contour of the sand mold structure in a supporting way.

The casting sand mold slip flask molding device further comprises a lateral molding block, through holes with structures corresponding to the lateral molding blocks are formed in the sand mold outer frame, the lateral molding block can be inserted from the outside of the sand mold outer frame through the through holes and extend to the inside of the sand mold outer frame, the sand mold outer frame is used for limiting and positioning, the lateral molding block, the sand mold outer frame and the sand mold outer frame are mutually matched and combined to form the outer contour of the sand mold structure, the design requirement of the casting structure is met, when the prepared casting sand mold is required to be removed from the outer contour of the sand mold structure through vertical slip flask, the lateral molding block can be pulled out from the sand mold outer frame, the upward obstruction of the lateral molding block on the casting sand mold is relieved, and the casting sand mold can be removed through the slip flask smoothly.

The casting sand mold slip flask molding device further comprises a push-up disc, wherein the push-up disc is horizontally arranged at the lower part of the ejector rod bottom plate and fixedly connected to a piston rod of the cylinder, so that the cylinder applies upward pushing force to the ejector rod bottom plate through the push-up disc, and the push-up disc is used for applying pushing force distributed in a plane state to the ejector rod bottom plate, so that the balance of pushing action on the ejector rod bottom plate is ensured.

The casting sand mold slip flask molding device is characterized in that a push plate guide rod is fixedly installed on a mold frame, the push plate guide rod is vertically arranged and correspondingly matched with a guide sleeve installed on a push plate, and the vertical movement state of the push plate is limited, guided and dynamically balanced, so that the push plate always maintains a horizontal arrangement state in the movement process.

The casting sand mold slip flask molding device is characterized in that the bearing pins are preferably arranged on the push supporting disc, and are symmetrically distributed on the disc surface of the push supporting disc in a balanced mode, so that the push supporting disc applies a pushing force distributed in a planar state to the push rod bottom plate in a point contact mode, and the stability of the pushing action of the push rod bottom plate is improved.

The utility model has the beneficial effects that the utility model provides the casting sand mold slip flask molding device, the action mode of pushing and supporting the casting sand mold by the ejector rod is utilized to realize the integral mechanical pneumatic control of the mold stripping and slip flask of the casting sand mold, the separation and slip flask mode of manually stripping and separating the casting sand mold in the prior art is replaced, the phenomenon of damaging the surface of the casting sand mold can be obviously reduced or avoided, the existing casting sand mold slip flask molding process method can be improved, the preparation quality of the casting sand mold is ensured, the labor intensity of workers can be obviously reduced, the production working efficiency is improved, meanwhile, the mold box structure of the combined type of the sand mold and the sand mold outer frame is adopted, the casting sand mold can be prepared in a cyclic mode by one-time mode assembling, the structural accuracy and the quality stability of the casting sand mold can be fully ensured, especially, the sand mold type and the sand mold outer frame can be exchanged and combined, the sharing use of the sand mold type and the sand mold outer frame among different types of products can be realized, the universality of tooling facilities is improved, the production cost is reduced, and the production cost is effectively reduced.

Drawings

Fig. 1 is a perspective view of a railway freight train rotating sleeve sand mold slip flask molding apparatus.

Fig. 2 is a front view of a railroad freight train rotating sleeve sand mold slip flask molding apparatus.

Fig. 3 is a side view of a railroad freight train rotating sleeve sand mold slip flask molding apparatus.

Fig. 4 is a perspective view showing a slip case state of the sand mold slip case molding device for the rolling stock of the railway freight train.

The mold comprises a mold frame 1, a mold bottom plate 2, a sand mold pattern 3, a sand mold outer frame 4, a cylinder 5, a push rod bottom plate 6, a push rod 7, a push rod guide rod 8, a lateral molding block 9, a push supporting disc 10, a push disc guide rod 11, a guide sleeve 12, a bearing pin 13, a rotating sleeve sand mold 14, a pneumatic switch 15 and a bearing disc 16.

Detailed Description

Further, the technical scheme of the utility model is specifically described with reference to specific embodiments and attached drawings.

The sand mould slip flask molding device for the railway freight train rotating sleeve is composed of a die carrier 1, a die bottom plate 2, a sand mould pattern 3, a sand mould outer frame 4, a cylinder 5, a push rod bottom plate 6, a push rod 7, a push rod guide rod 8, a lateral molding block 9, a push support disc 10, a push disc guide rod 11, a pneumatic switch 15 and a bearing disc 16 as shown in fig. 1 to 3; the mould base 2 is fixedly arranged on the upper end face of the mould frame 1 to form a moulding operation platform of a casting sand mould, the sand mould pattern 3 is limited and placed on the mould base 2, the sand mould outer frame 4 is fixedly arranged on the mould base 2, 6 lateral moulding blocks 9 are respectively correspondingly matched and inserted into through holes formed in the sand mould outer frame 4, the sand mould pattern 3, the sand mould outer frame 4 and the lateral moulding blocks 9 are mutually matched and combined to form a structural outline of a rotary sleeve sand mould 14, 4 ejector rod guide rods 8 and 4 pushing disc guide rods 11 are respectively fixedly arranged on the lower plate face of the mould base 2, and the ejector rod guide rods 8 and the pushing disc guide rods 11 are mutually and vertically arranged in a corresponding mode; the ejector rod bottom plate 6 is horizontally arranged and hung on the ejector rod guide rod 8 in a balanced manner and can be guided by the ejector rod guide rod 8 to move in an up-down balanced manner, 12 ejector rods 7 which are vertically arranged in a balanced arrangement are fixedly arranged on the upper surface of the ejector rod bottom plate 6, the ejector rods 7 respectively penetrate through the die bottom plate 2 and the sand mould pattern 3, the upper end surfaces of the ejector rods 7 respectively flush with the parting surfaces of the sand mould pattern 3 at corresponding positions in a natural hanging state, the bearing disc 16 is horizontally arranged and fixedly connected with the lower end of the push disc guide rod 11, the air cylinders 5 are vertically arranged and fixedly arranged on the bearing disc 16, the push support plate 10 is horizontally arranged at the lower part of the push rod bottom plate 6 and fixedly connected to a piston rod of the air cylinder 5, a guide sleeve 12 corresponding to the push plate guide rod 11 in structure is arranged on the push support plate 10, the guide sleeve 12 is matched with the corresponding sleeve of the push plate guide rod 11 to limit and guide the motion state of the push support plate 10, 4 bearing pins 13 symmetrically distributed are arranged on the upper disc surface of the push support plate 10, and the pneumatic switch 15 is fixedly arranged on the die frame 1 and controls the driving working state of the air cylinder 5.

The rotating sleeve sand mold 14 of the railway freight train is prepared by using the railway freight train rotating sleeve sand mold slip flask molding device, and the following operation method is adopted:

Step 1, aligning a sand mold pattern 3 with a limiting structure on a mold bottom plate 2, placing and stabilizing, fixedly mounting a sand mold outer frame 4 on the mold bottom plate 2, and finally sequentially and stably inserting a lateral modeling block 9 into through holes formed in the sand mold outer frame 4, wherein the outer contours of the sand mold structures of the rotating sleeve sand mold 14 are formed by combining as shown in fig. 1;

Step 2, mixing ester hardening sodium silicate sand or self hardening resin sand by using a continuous sand mixer, filling molding sand into the outer contour of the sand mould structure by using the continuous sand mixer, pounding while filling, scraping the end face of the upper port of the outer contour of the sand mould structure after the outer contour of the sand mould structure is filled with the molding sand, and standing for sand hardening;

Step 3, when the hardening strength of the molding sand in the outer contour of the sand mold structure meets the preparation process requirement, firstly, the lateral molding blocks 9 are pulled out and removed from the outer contour of the sand mold frame 4 in sequence, then a turning air is turned on to control the pneumatic operation of the air cylinder 5, a piston rod drives the push support disc 10 to lift along the push support disc guide rod 11, a bearing pin 13 on the push support disc 10 acts on the push rod bottom plate 6 to push the push rod bottom plate 6 to lift along the push rod guide rod 8, a push rod on the push rod bottom plate 6 is lifted along with the lifting, as shown in fig. 4, the hardened and molded rotating sleeve sand mold 14 is directly lifted out from the upper port of the outer contour of the sand mold structure, so that the rotating sleeve sand mold 14 is integrally taken out, and then the turning air switch 15 is turned off, so that the piston rod of the air cylinder 5 is reset;

And 4, lifting and placing the rotating sleeve sand mould 14 ejected out of the box on a sand mould supporting plate to finish the preparation of the rotating sleeve sand mould 14, and then continuing other subsequent operation.

After the ejection and the demolding of the rotating sleeve sand mold 14 are completed in the step 4, the operation of the step 2 is only needed to be directly turned to, the original combined structure of the mold box is reused, molding sand is refilled in the outer contour of the sand mold structure, the next piece of rotating sleeve sand mold 14 is prepared, and the reciprocating circulation operation is performed until the production and preparation work of all the rotating sleeve sand molds 14 is completed.

Claims (5)

1. A casting sand mold slip flask molding device is characterized by comprising a mold frame (1), a mold bottom plate (2), a sand mold pattern (3), a sand mold outer frame (4), a cylinder (5), a push rod bottom plate (6) and a push rod (7) arranged on the push rod bottom plate (6), wherein the mold frame (1) is a structural frame body, the upper end face is a molding operation platform, the mold bottom plate (2) is fixedly arranged on the molding operation platform, a limit structure corresponding to the structure of the sand mold pattern (3) and a connecting structure corresponding to the structure of the sand mold outer frame (4) are arranged on the surface of the mold bottom plate (2), when the sand mold pattern (3) is limited on the mold bottom plate (2) and the sand mold outer frame (4) is fixedly arranged on the mold bottom plate (2), the sand mold pattern (3) and the sand mold outer frame (4) of a side wall protection frame body structure are mutually matched and combined to form the outer contour of a casting structure, the outer contour of the casting structure is a barrier-free structure corresponding to the upper port, the outer contour of the casting sand mold can be removed from the outer contour of the casting sand mold outer frame (4) through filling the horizontal contour of the casting mold outer frame (6), the sand mould is characterized in that a top rod guide rod (8) fixedly installed on the mould bottom plate (2) is vertically arranged and is hung on the lower portion of the mould bottom plate (2) in a balanced mode, the top rod guide rod (8) can guide the top rod guide rod (8) to move up and down in a balanced mode, the top rods (7) are vertically arranged on the upper end face of the top rod bottom plate (6), the upper ends of the top rod guide rod are respectively penetrated through top rod holes correspondingly formed in the mould bottom plate (2) and the sand mould pattern (3), the upper end faces of the top rod bottom plate (6) are respectively kept flush with the parting surface of the sand mould pattern (3) at corresponding positions under the natural limiting and hanging state of the top rod guide rod (8), and the air cylinders (5) are correspondingly arranged on the lower portion of the top rod bottom plate (6) and are fixedly connected to the mould frame (1), and can push the top rod bottom plate (6) to move upwards by power driving of the air cylinders (5).

2. The casting sand mold slip flask molding device according to claim 1, further comprising a lateral molding block (9), wherein through holes with structures corresponding to the lateral molding blocks (9) are formed in the sand mold outer frame (4), the lateral molding block (9) can be inserted from the outside of the sand mold outer frame (4) through the through holes and extend to the inside of the sand mold outer frame (4), and the sand mold outer frame (4) is limited and positioned, and is matched and combined with the sand mold pattern (3) and the sand mold outer frame (4) to form the outer contour of the sand mold structure.

3. The casting sand mold slip flask molding device according to claim 1 or 2, further comprising a push-up plate (10), wherein the push-up plate (10) is horizontally arranged at the lower part of the push-up plate (6) and fixedly connected to a piston rod of the cylinder (5), so that the cylinder (5) applies an upward pushing force to the push-up plate (6) through the push-up plate (10), and the push-up plate (10) applies a pushing force distributed in a planar state to the push-up plate (6).

4. A casting sand mould slip flask molding device as claimed in claim 3, wherein a push plate guide rod (11) is fixedly arranged on the mold frame (1), the push plate guide rod (11) is vertically arranged and correspondingly matched with a guide sleeve (12) arranged on the push plate (10), and the vertical movement state of the push plate (10) is limited, guided and dynamically balanced.

5. A casting sand mould slip flask molding device as claimed in claim 4, wherein bearing pins (13) are arranged on the push-up plate (10), and the bearing pins (13) are symmetrically distributed on the surface of the push-up plate (10) in an equalizing manner, so that the push-up plate (10) applies a pushing force distributed in a plane state to the push-up plate bottom plate (6) in a point contact manner.