Green sand mold

Abstract

The utility model provides a green sand mold which is characterized by comprising a mold disc and a bottom mold disc, the mold disc comprises a cooling assembly and a back suction assembly, the cooling assembly comprises an upper mold disc and a lower mold disc, the upper mold disc is located above the lower mold disc, the positions and the sizes of the axes of the upper mold disc and the lower mold disc are the same, and the back suction assembly is located below the upper mold disc. The upper mold disc and the lower mold disc are filled with liquid for absorbing excess temperature; the back-suction assembly comprises arc-shaped square pipes arranged below the upper mold disc and above the lower mold disc correspondingly, a plurality of air holes are formed in the pipe walls of the arc-shaped square pipes, and one side of each arc-shaped square pipe communicates with a discharge pipe, is connected with a suction fan and is used for absorbing high-temperature hot air. While the casting efficiency is improved, overflowing rising gas can be collected, and the safety of operators is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of casting molds, specifically a type of wet sand mold. Background Technology

[0002] Moist sand, also known as wet molding sand, refers to sand mixed with bentonite as a binder, water, and other additives in casting production. This mixture can be used for molding and core making, and the sand core does not need to be dried before direct pouring. Sand casting is the most widely used manufacturing method. In sand casting, a finished part model or wooden model (pattern) is placed in sand, and then sand is filled around the pattern. After removing the pattern, the sand forms a mold. For the finished casting, the higher the requirements for manufacturing process and casting precision, the better the quality of the finished casting. In casting production, a large amount of heat needs to be quickly dissipated to facilitate rapid one-piece molding of the casting, reduce adhesion to loose molding sand, and effectively reduce the impact of excess heat on the mold temperature. Existing casting molds do not have many heat dissipation features, and most rely on natural cooling for shaping. This method is inefficient and cannot determine whether the moist sand has completely cooled, often resulting in accidents where escaped hot air burns operators. To achieve the above objectives, this utility model provides a moist sand mold that can solve the problems mentioned in the background art. Utility Model Content

[0003] This utility model adopts the following technical solution:

[0004] A type of wet-molding sand mold includes a mold plate and a bottom mold plate, wherein the mold plate includes a cooling component and a suction component.

[0005] The cooling component includes an upper mold plate and a lower mold plate. The upper mold plate is located above the lower mold plate and has the same axis position and size. Both the upper and lower mold plates are filled with liquid to absorb excess temperature.

[0006] The back suction assembly includes arc-shaped square tubes respectively disposed below the upper mold plate and above the lower mold plate. The tube wall of the arc-shaped square tube is provided with multiple air vents. One side of the arc-shaped square tube is connected to an exhaust pipe and a suction fan for absorbing high-temperature hot air.

[0007] Preferably, the interior of the arc-shaped square tube is hollowed out to form a gas channel at the same position as the center of the cross-section of the arc-shaped square tube. The vent holes include transverse openings distributed on the inner sidewall of the arc-shaped square tube and longitudinal openings provided on the sidewall of the upper mold plate and the lower mold plate that are close to each other. The transverse openings and the longitudinal openings are connected to the gas channel. A soil isolation net is provided between the diameters of the transverse openings and the longitudinal openings.

[0008] Preferably, the discharge pipe is connected to the gas channel, and the end of the gas channel away from its connection point with the discharge pipe is blocked.

[0009] The upper mold plate has two anti-offset slots on its arc-shaped square tube, and the lower mold plate has two slot seats on its arc-shaped square tube. Each anti-offset slot cooperates with the slot seat.

[0010] Preferably, the lower mold plate has an internal cavity, and the side wall of the lower mold plate has a water inlet and a water outlet. An intermediate partition plate is provided inside the cavity, and the intermediate partition plate is disposed between the water outlet and the water inlet. The upper top surface of the intermediate partition plate is fixedly connected to the lower bottom surface of the arc-shaped square tube, and the lower bottom surface of the intermediate partition plate is connected to the lower bottom surface of the cavity.

[0011] Preferably, the intermediate partition plate is provided with two upper partition plates at symmetrical distances on both sides along the cavity, and the upper part of the two upper partition plates is fixedly connected to the bottom of the arc-shaped square tube and there is a gap between the bottom of the two upper partition plates and the bottom surface of the cavity.

[0012] The cavity of the lower mold plate is provided with multiple support grids connecting the two inner walls, and the support grids are located at the middle position after the diameter of the two upper partition plates is expanded.

[0013] Preferably, a circulating chiller is provided above the bottom mold plate, the liquid outlet of the circulating chiller is connected to the water inlet through a flexible hose, and the liquid inlet of the circulating chiller is connected to the water outlet through a steel pipe.

[0014] Preferably, the upper mold plate is provided with four upper ear plate seats on its periphery, and the intersection point of the connecting lines of two opposing upper ear plate seats is located on the axis of the upper mold plate and the lower mold plate. The lower mold plate is provided with lower ear plate seats that mate with the upper ear plate seats one by one on its periphery. The lower mold plate is also provided with bolt locking seats that correspond to the lower ear plate seats one by one on its periphery. The bolt locking seats are located below the lower ear plate seats, and the axis of each lower ear plate seat is the same as that of the bolt locking seats and the upper ear plate seats.

[0015] The upper ear plate seat, lower ear plate seat, and bolt locking seat on a single axis are provided with locking bolts through their internal threads. The bottom of the locking bolt is a threaded opening, and the bolt locking seat has a threaded interface inside that mates with the locking bolt.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model sets up a disc-shaped mold plate and sets a back suction component on the mold connection surface that divides the mold into two parts. Through the cooling component inside the mold plate and the back suction component, the damp mold sand can be cooled down quickly, which can accelerate the temperature transfer speed of the molten steel. This can help improve the quality of the castings and reduce the life loss of the mold caused by frequent overheating.

[0018] The annular disc-shaped lower mold plate can form a curved water flow channel, and at the same time, it can make the airflow of the annular curved square tube smoother. With smooth water flow and smoother airflow, the internal damp sand can be frequently heat exchanged, increasing the heat storage limit of the damp sand, and shortening the casting time and improving the casting efficiency.

[0019] When the back suction component is operating smoothly, it can absorb the airflow inside the mold sand and recover the overflow gas after the upper and lower mold plates are opened, preventing the internal rising gas from overflowing and causing scalding when the mold is opened, thus ensuring the safety of the operators. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of another embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the lower mold plate after the arc-shaped square tube is removed;

[0023] Figure 4 This is a partial unfolded plan view of the lower mold plate of this utility model;

[0024] Figure 5 This is a cross-sectional view of the arc-shaped square tube of this utility model.

[0025] In the diagram: 1. Mold plate; 100. Cooling component; 3. Back suction component; 4. Bottom mold plate;

[0026] 101. Upper mold plate; 102. Lower mold plate; 103. Upper ear plate seat; 104. Lower ear plate seat; 105. Locking bolt; 106. Bolt locking seat; 107. Cavity; 108. Intermediate partition plate; 109. Upper partition plate; 110. Water inlet; 111. Water outlet; 112. Anti-deviation bayonet; 113. Bayonet seat; 114. Support grid; 115. Circulating refrigeration unit; 301. Arc-shaped square tube; 302. Horizontal opening; 303. Longitudinal opening; 304. Gas channel; 305. Slag and soil isolation net. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Please refer to the attached document carefully. Figure 1-4 It includes a mold plate 1 and a bottom mold plate 4. The mold plate 1 includes a cooling component 100 and a back suction component 3. The cooling component 100 includes an upper mold plate 101 and a lower mold plate 102. The upper mold plate 101 is located above the lower mold plate 102 and has the same axis position and size. The upper mold plate 101 and the lower mold plate 102 are both filled with liquid to absorb excess temperature.

[0032] The back suction component 3 includes an arc-shaped square tube 301 respectively disposed below the upper mold plate 101 and above the lower mold plate 102. The tube wall of the arc-shaped square tube 301 is provided with a plurality of air vents. One side of the arc-shaped square tube 301 is connected to an exhaust pipe and connected to a suction fan for absorbing high-temperature hot air.

[0033] The arc-shaped square tube 301 has a hollowed-out interior forming a gas channel 304 with the same center position as the cross-section of the arc-shaped square tube 301. The vent includes a transverse opening 302 distributed on the inner side wall of the arc-shaped square tube 301 and a longitudinal opening 303 provided on the side wall of the upper mold plate 101 and the lower mold plate 102 that are close to each other. The transverse opening 302 and the longitudinal opening 303 are connected to the gas channel 304. A slag and soil isolation net 305 is provided between the diameters of the transverse opening 302 and the longitudinal opening 303.

[0034] The discharge pipe is connected to the gas channel 304, and the end of the gas channel 304 away from its connection point with the discharge pipe is blocked.

[0035] The upper mold plate 101 has two anti-offset bayonet slots 112 on the arc-shaped square tube 301, and the lower mold plate 102 has two bayonet seats 113 on the arc-shaped square tube 301. Each anti-offset bayonet slot 112 cooperates with the bayonet seat 113.

[0036] One embodiment of this utility model is as follows: a remote handle is provided at any position around the lower mold plate 102 for flipping and fastening the upper and lower mold plates 102. When using this mold, the operator uses it in the same way as a regular mold with damp sand. The original mold model is filled into the inner diameter range of the mold plate 1, damp sand is poured in, and after compaction, the excess damp sand is removed using a cover plate. Then, the same upper casting mold is made inside the upper mold plate 101 using the same method. After molding, the mold model is removed, and the two components are flipped using the inherent connection method between the upper mold plate 101 and the lower mold plate 102. After the back fastener is tightened, a pouring hole is set, and the inside of the pouring hole is filled with molten steel. Then, the cooling component 100 is turned on to circulate cooling water to cool down and quickly remove excess heat. The temperature of the coolant is detected. When the temperature drops below the safe melting point of the molten steel, the back suction component 3 is turned on. Then, the operator unlocks the solidification between the mold plates 1. When the high temperature gas escapes, it will pass through the edge of the mold plate 1 and form a suction wall through the two opposing longitudinal openings 303 of the upper and lower arc square tubes 301, which isolates the escaped hot gas from the outside. Then, the casting is taken out and the solidified mold sand is broken by hitting it with a wooden hammer or other means.

[0037] Please refer to this carefully. Figure 1-4 The lower mold plate 102 has a cavity 107 inside. The side wall of the lower mold plate 102 has a water inlet 110 and a water outlet 111. The cavity 107 has an intermediate partition plate 108 inside. The intermediate partition plate 108 is disposed between the water outlet 111 and the water inlet 110. The upper top surface of the intermediate partition plate is fixedly connected to the lower bottom surface of the arc-shaped square tube 301. The lower bottom surface of the intermediate partition plate 108 is connected to the lower bottom surface of the cavity 107.

[0038] Two upper partition plates 109 are symmetrically arranged on both sides of the intermediate partition plate 108 that move along the cavity 107. The upper part of each of the two upper partition plates 109 is fixedly connected to the bottom of the arc-shaped square tube 301 and there is a gap between the bottom of the upper part and the bottom surface of the cavity 107.

[0039] The cavity 107 of the lower mold plate 102 is provided with a plurality of support grids 114 connecting the two inner walls. The support grids 114 are located at the middle position after the diameter of the two upper partition plates 109 is expanded. A circulating chiller 115 is provided above the bottom mold plate 4. The liquid outlet of the circulating chiller 115 is connected to the water inlet 110 through a hose. The liquid inlet of the circulating chiller 115 is connected to the water outlet 111 through a steel pipe. The steel pipe can avoid the impact on the life of the hose caused by long-term flow of high-temperature liquid.

[0040] The water circulation method of this utility model is as follows: the cavity 107 is completely closed, and contact cooling is achieved through heat transfer. Water flows into the cavity 107 from the inlet 110, flows through the gap below the upper partition plate 109 on one side of the inlet 110, and gradually rises through the support grid 114 until it fills the entire cavity 107. Then, it flows through the gap below the upper partition plate 109 on the side near the outlet 111 and is discharged into the outlet 111. After being cooled by the circulating chiller 115, it is refilled into the cavity 107 through the inlet 110. The outlet 111 is located at a higher position on the outer wall near the upper edge, ensuring that the temperature at the lowest point of the filled state is relieved.

[0041] Please refer to this carefully. Figure 1 , Figure 2 The upper mold plate 101 has four upper ear plate seats 103 on its periphery. The intersection point of the connecting lines of two opposing upper ear plate seats 103 is located on the axis of the upper mold plate 101 and the lower mold plate 102. The lower mold plate 102 has lower ear plate seats 104 that mate with the upper ear plate seats 103 on its periphery. The lower mold plate 102 also has bolt locking seats 106 that correspond to the lower ear plate seats 104 on its periphery. The bolt locking seats 106 are located below the lower ear plate seats 104. The axis of each lower ear plate seat 104 is the same as that of the bolt locking seats 106 and the upper ear plate seats 103.

[0042] The upper ear plate seat 103, lower ear plate seat 104, and bolt locking seat 106 on a single axis are provided with locking bolts 105 through their internal threads. The bottom of the locking bolt 105 is a threaded opening, and the bolt locking seat 106 has a threaded interface inside that cooperates with the locking bolt 105.

[0043] The locking method of this utility model mainly includes two types: one is to achieve a positioning effect through the tenon and mortise engagement between the bayonet seat 113 and the anti-offset bayonet 112; the other is to press the upper and lower mold plates 1 together through the locking between the two sets of lower ear plate seats 104 in four directions and the bolt locking seat 106 and the locking bolt 105. The utility model has been described above with reference to the accompanying drawings. Obviously, the specific implementation of this utility model is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this utility model, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of this utility model.

Claims

1. A type of moisture-curing sand mold, characterized in that: It includes a mold plate (1) and a bottom mold plate (4). The mold plate (1) includes a cooling component (100) and a back suction component (3). The cooling component (100) includes an upper mold plate (101) and a lower mold plate (102). The upper mold plate (101) is located above the lower mold plate (102) and has the same axis position and size. The upper mold plate (101) and the lower mold plate (102) are both filled with liquid to absorb excess temperature. The back suction assembly (3) includes an arc-shaped square tube (301) respectively disposed below the upper mold plate (101) and above the lower mold plate (102). The arc-shaped square tube (301) has multiple air vents on its tube wall. One side of the arc-shaped square tube (301) is connected to a discharge pipe and a suction fan for absorbing high-temperature hot air.

2. The damping sand mold according to claim 1, characterized in that: The arc-shaped square tube (301) has a hollowed-out interior forming a gas channel (304) with the same center position as the cross-section of the arc-shaped square tube (301). The vent holes include transverse openings (302) distributed on the inner sidewall of the arc-shaped square tube (301) and longitudinal openings (303) provided on the sidewall of the upper mold plate (101) and the lower mold plate (102) that are close to each other. The transverse openings (302) and the longitudinal openings (303) are connected to the gas channel (304). A slag isolation net (305) is provided between the diameters of the transverse openings (302) and the longitudinal openings (303).

3. The damping sand mold according to claim 2, characterized in that: The discharge pipe is connected to the gas channel (304), and the end of the gas channel (304) away from its connection point with the discharge pipe is blocked. The upper mold plate (101) has two anti-offset bayonet slots (112) on the arc-shaped square tube (301), and the lower mold plate (102) has two bayonet seats (113) on the arc-shaped square tube (301). Each anti-offset bayonet slot (112) cooperates with the bayonet seat (113).

4. The damping sand mold according to claim 1, characterized in that: The lower mold plate (102) has a cavity (107) inside. The side wall of the lower mold plate (102) has a water inlet (110) and a water outlet (111). The cavity (107) has an intermediate partition plate (108) inside. The intermediate partition plate (108) is located between the water outlet (111) and the water inlet (110). The upper top surface of the intermediate partition plate is fixedly connected to the lower bottom surface of the arc-shaped square tube (301). The lower bottom surface of the intermediate partition plate (108) is connected to the lower bottom surface of the cavity (107).

5. A damping sand mold according to claim 1, characterized in that: The upper mold plate (101) has four upper ear plate seats (103) on its periphery. The intersection point of the connecting lines of two opposing upper ear plate seats (103) is located on the axis of the upper mold plate (101) and the lower mold plate (102). The lower mold plate (102) has lower ear plate seats (104) that mate with the upper ear plate seats (103) one by one on its periphery. The lower mold plate (102) also has bolt locking seats (106) that correspond one by one with the lower ear plate seats (104) on its periphery. The bolt locking seats (106) are located below the lower ear plate seats (104). The axis of each lower ear plate seat (104) is the same as that of the bolt locking seats (106) and the upper ear plate seats (103). The upper ear plate seat (103), lower ear plate seat (104), and bolt locking seat (106) on a single axis are provided with locking bolts (105) on their internal threads. The bottom of the locking bolt (105) is a threaded opening. The bolt locking seat (106) is provided with a threaded interface inside to cooperate with the locking bolt (105).

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