Efficient molding device for molding sand casting

Abstract

The utility model discloses an efficient molding device for molding sand casting, which comprises a base, a stand column, a top plate, a cavity, a lifting unit and a driving mechanism, the stand column is arranged on the base along the longitudinal direction, the top plate is fixedly arranged at the top of the stand column, the cavity is detachably arranged on the base, and the lifting unit is arranged on the base. The lifting unit is arranged at the bottom of the top plate in the longitudinal direction and is in transmission connection with the cavity, the driving mechanism is arranged at the bottom of the base and is in transmission connection with the cavity, the surface of the base is provided with sliding grooves which are arranged in a crossed mode, and the cavity comprises a top cover, a bottom plate and four side plates arranged around the top cover and the bottom plate. According to the utility model, the cavity side plates can be driven to be automatically opened and closed through the driving mechanism, and the top cover can be driven to be automatically opened and closed through the lifting unit, so that molding sand can be conveniently filled into the cavity, and mold opening and demolding can be conveniently carried out after casting is completed, and the production efficiency of molding sand casting is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal casting, in particular to a high-efficiency molding device for molding sand casting. Background Art

[0002] Metal casting is the process of melting metal into a liquid that meets specific requirements, pouring it into a mold, and then cooling, solidifying, and finishing it to produce a casting with a predetermined shape, size, and properties. Because the cast blank is nearly formed, it can eliminate or minimize machining, reducing costs and time. Casting is a fundamental process in the modern machinery manufacturing industry.

[0003] Sand casting is one of the most commonly used processes in metal casting. The process of sand casting includes the following steps:

[0004] S1-Prepare the mold: Determine the basic shape of the product by placing a finished part model or a wooden model in the sand. The shape and size of the mold need to accurately correspond to the required casting;

[0005] S2-Filling molding sand: Fill the molding sand into the sand box and compact it to ensure the stability and accuracy of the mold;

[0006] S3-Pouring liquid metal: After taking out the model from the mold, pour the melted liquid metal into the cavity, and strictly control the temperature and pouring speed to ensure that the metal can evenly fill the cavity;

[0007] S4 - Cooling and solidification: The liquid metal cools and solidifies in the mold cavity to form the casting; this process takes a certain amount of time, depending on the type of metal and the complexity of the casting;

[0008] S5- Demolding and cleaning: After the casting cools and solidifies, it needs to be demoulded to remove excess sand and gate system on the casting to obtain the final product.

[0009] Among them, manual operation is required in the above-mentioned processes of filling molding sand and demoulding, which is time-consuming, labor-intensive and inefficient, and thus needs to be improved. Utility Model Content

[0010] In order to solve the above problems, the utility model provides an efficient molding device for sand casting, including a base, a column, a top plate, a cavity, a lifting unit and a driving mechanism. The column is arranged on the base along the longitudinal direction, the top plate is fixedly arranged on the top of the column, and the cavity is detachably arranged on the base. The lifting unit is arranged at the bottom of the top plate along the longitudinal direction and is connected to the cavity transmission. The driving mechanism is arranged at the bottom of the base and is connected to the cavity transmission. The surface of the base is provided with a slide groove arranged in a cross shape. The cavity includes a top cover, a bottom plate and four side plates arranged around the top cover and the bottom plate. The four side plates slide back and forth along the slide groove driven by the driving mechanism, thereby realizing the opening and closing of the cavity.

[0011] Furthermore, the driving mechanism includes a motor, a screw, a nut and a connecting rod. The motor is arranged at the bottom of the base. The screw is arranged longitudinally and the lower end is transmission connected to the motor, and the upper end is transmission connected to the nut. A connecting rod is provided around each nut. One end of the connecting rod is rotationally connected to the nut, and the other end is transmission connected to the side plate through a slider.

[0012] Furthermore, a first connecting block is provided around each of the four sides of the nut, a first rotating shaft is provided on the first connecting block, and one end of the connecting rod is rotatably connected to the first rotating shaft.

[0013] Furthermore, the slider is arranged at the bottom of the side plate, a second connecting block is provided at the bottom of the slider, a second rotating shaft is provided on the second connecting block, the other end of the connecting rod is rotatably connected to the second rotating shaft, and the slider is slidably connected to the slide groove.

[0014] Furthermore, a cooling pipe is provided inside the side plate, and the water inlet and outlet ends of the cooling pipe extend out of the side plate respectively.

[0015] Furthermore, a pouring port is provided above the top cover.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model can drive the side plates of the mold cavity to open and close automatically through the driving mechanism, and can drive the top cover to open and close automatically through the lifting unit, so as to facilitate the filling of molding sand into the mold cavity and the opening and demolding of the mold after the casting is completed, thereby improving the production efficiency of the molding sand casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the partial structure of the side panel of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the nut in the utility model.

[0022] In the picture:

[0023] 1-base, 11-chute, 2-column, 3-top plate, 4-cavity, 41-top cover, 42-bottom plate, 43-side plate, 44-pouring gate, 45-cooling pipe, 5-lifting unit, 6-driving mechanism, 61-motor, 62-screw, 63-nut, 64-connecting rod, 65-slider, 66-first connecting block, 67-first rotating shaft, 68-second connecting block, 69-second rotating shaft. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-2 As shown, the efficient molding device for sand casting in this embodiment includes a base 1, a column 2, a top plate 3, a cavity 4, a lifting unit 5, and a driving mechanism 6. The column 2 is longitudinally arranged on the base 1, the top plate 3 is fixedly arranged on the top of the column 2, and the cavity 4 is detachably arranged on the base 1. The lifting unit 5 is longitudinally arranged at the bottom of the top plate 3 and is transmission-connected to the cavity 4. The driving mechanism 6 is arranged at the bottom of the base 1 and is transmission-connected to the cavity 4. The lifting unit 5 can be driven by a pneumatic cylinder or an oil cylinder.

[0026] The surface of the base 1 is provided with a cross-shaped slide groove 11, and the cavity 4 includes a top cover 41, a bottom plate 42 and four side plates 43 arranged around the top cover 41 and the bottom plate 42. The four side plates 43 slide back and forth along the slide groove 11 under the drive of the driving mechanism 6, and the lifting unit 5 can drive the top cover 41 to move up and down, thereby realizing the opening and closing of the cavity 4.

[0027] The mold cavity 4 is used to contain molding sand. A pouring port 44 is provided above the top cover 41 . The pouring port 44 is connected to a pouring channel for the molded molding sand.

[0028] The driving mechanism 6 includes a motor 61, a screw 62, a nut 63 and a connecting rod 64. The motor 61 is arranged at the bottom of the base 1. The screw 62 is arranged longitudinally and the lower end is transmission-connected to the motor 61, and the upper end is transmission-connected to the nut 63. A connecting rod 64 is provided around the nut 63. One end of the connecting rod 64 is rotationally connected to the nut 63, and the other end is transmission-connected to the side plate 43 through a slider 65.

[0029] like Figure 3 As shown, a cooling pipe 45 is provided inside the side plate 43 , and the water inlet and outlet ends of the cooling pipe 45 extend out of the side plate 43 respectively. By passing coolant into the cooling pipe 45 , the metal casting liquid can be quickly cooled and formed.

[0030] like Figure 4 As shown, a first connecting block 66 is provided around each of the nut 63 , a first rotating shaft 67 is provided on the first connecting block 66 , and one end of the connecting rod 64 is rotatably connected to the first rotating shaft 67 .

[0031] The slider 65 is arranged at the bottom of the side plate 43 , and a second connecting block 68 is provided at the bottom of the slider 65 . A second rotating shaft 69 is provided on the second connecting block 68 . The other end of the connecting rod 64 is rotatably connected to the second rotating shaft 69 , and the slider 65 is slidably connected to the slide groove 11 .

[0032] The motor 61 drives the screw 62 to rotate, and then drives the nut 63 to rise and fall along the screw 62. During the lifting process of the nut 63, the connecting rod 64 and the slider 65 can be driven to slide back and forth along the slide groove 11, thereby realizing the automatic opening and closing of the side panel 43. The top cover 41 can be driven to open and close automatically through the lifting unit 5, thereby facilitating the filling of molding sand into the mold cavity 4 and the opening and demolding of the mold after the casting is completed, thereby improving the production efficiency of molding sand casting.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient molding device for sand casting, characterized by: It includes a base, a column, a top plate, a cavity, a lifting unit and a driving mechanism. The column is arranged on the base longitudinally, the top plate is fixedly arranged on the top of the column, the cavity is detachably arranged on the base, the lifting unit is arranged on the bottom of the top plate longitudinally and is connected to the cavity transmission, the driving mechanism is arranged at the bottom of the base and is connected to the cavity transmission, the surface of the base is provided with a cross-shaped slide groove, the cavity includes a top cover, a bottom plate and four side plates arranged around the top cover and the bottom plate, the four side plates slide back and forth along the slide groove driven by the driving mechanism, thereby realizing the opening and closing of the cavity.

2. The high-efficiency molding device for sand casting according to claim 1, characterized in that: The driving mechanism includes a motor, a screw, a nut and a connecting rod. The motor is arranged at the bottom of the base. The screw is arranged longitudinally and the lower end is transmission connected to the motor, and the upper end is transmission connected to the nut. A connecting rod is provided around each of the nut. One end of the connecting rod is rotationally connected to the nut, and the other end is transmission connected to the side plate through a slider.

3. The high-efficiency molding device for sand casting according to claim 2, characterized in that: A first connecting block is provided around each of the four sides of the nut. A first rotating shaft is provided on the first connecting block. One end of the connecting rod is rotatably connected to the first rotating shaft.

4. The high-efficiency molding device for sand casting according to claim 3, characterized in that: The slider is arranged at the bottom of the side plate, a second connecting block is provided at the bottom of the slider, a second rotating shaft is provided on the second connecting block, the other end of the connecting rod is rotatably connected to the second rotating shaft, and the slider is slidably connected to the sliding groove.

5. The high-efficiency molding device for sand casting according to claim 1, characterized in that: A cooling pipe is provided inside the side plate, and water inlet and outlet ends of the cooling pipe extend out of the side plate respectively.

6. The high-efficiency molding device for sand casting according to claim 1, characterized in that: A pouring port is provided above the top cover.

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