Precoated sand shell pressing machine

Abstract

The invention belongs to the technical field of casting equipment, and particularly discloses a precoated sand shell pressing machine which comprises a machine body, a base, a mold opening and closing assembly, a material pressing machine assembly, a base plate assembly and a cleaning assembly. The base is arranged on the side edge of the machine body, the die opening and closing assembly is arranged above the base, the material pressing machine assembly is arranged above the machine body, the base plate assembly is arranged below the material pressing machine assembly, and the cleaning assembly is arranged on the side edge of the die opening and closing assembly. Opening and closing of the first mold body and the second mold body are achieved through the mold opening and closing assembly, the effect of separating the material pressing machine assembly and the mold opening and closing assembly is achieved through the arranged base plate assembly, and the situation that the material pressing machine body makes direct contact with a mold, and consequently the mold is damaged is avoided; the cleaning assembly comprises a sliding rail, a lead screw, a driving motor, a sliding block, a connecting arm and a U-shaped scraper. The driving motor drives the lead screw to rotate, the lead screw is used for driving the sliding block to drive the U-shaped scraping plate to move through the connecting arm, and the U-shaped scraping plate is used for scraping away precoated sand left on the first mold mounting plate and the second mold mounting plate.

Description

Technical Field

[0001] The invention relates to the technical field of casting equipment, in particular to a coated sand shell pressing machine. Background Art

[0002] Coated sand. This is molding sand or core sand whose surface is coated with a solid resin film before molding. There are two coating processes: cold and hot. The cold method involves dissolving the resin in ethanol and adding hexamethylenetetramine during the sand mixing process. The two coat the sand surface, and the ethanol evaporates to produce the coated sand. The hot method involves preheating the sand to a certain temperature, adding the resin to melt it, and stirring until the resin coats the sand surface. An aqueous hexamethylenetetramine solution and a lubricant are then added. The sand is then cooled, crushed, and sieved to produce the coated sand. It is used for steel and iron castings.

[0003] The coated sand shell forming device sprays sand into a mold for extrusion molding. However, after the coated sand is heated and crusted, the excess uncrusted sand needs to be removed manually. Workers need to manually remove the excess uncrusted sand, and the process is very cumbersome. Summary of the Invention

[0004] The object of the present invention is to provide a coated sand shell pressing machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coated sand shell pressing machine, comprising a machine body, a base, a mold opening and closing assembly, a pressing machine assembly, a pad assembly and a cleaning assembly.

[0006] The base is arranged on the side of the machine body, the opening and closing mold assembly is arranged above the base, the pressing machine assembly is arranged above the machine body, the pad assembly is arranged below the pressing machine assembly, and the cleaning assembly is arranged on the side of the opening and closing mold assembly.

[0007] Preferably, a collecting trough is provided on the base for collecting waste sand.

[0008] Preferably, the mold opening and closing assembly includes a first mold mounting plate, a second mold mounting plate, a fixing plate and a positioning rod.

[0009] The second mold mounting plate is located between the first mold mounting plate and the fixed plate, and both the first mold mounting plate and the fixed plate are fixed to the base. The positioning rod passes through the second mold mounting plate, and the two ends of the positioning rod are respectively fixed to the first mold mounting plate and the fixed plate. The first mold body and the second mold body are respectively fixed on the opposite surfaces of the first mold mounting plate and the second mold mounting plate. The first hydraulic cylinder is fixed to the fixed plate, and the output end of the first hydraulic cylinder is fixed to the first mold mounting plate. By operating the first hydraulic cylinder, pushing or pulling the second mold mounting plate can drive the second mold body to close or separate with the first mold body.

[0010] Preferably, the pressing machine assembly includes a second hydraulic cylinder and a pressing machine body.

[0011] The second hydraulic cylinder is fixed to the machine body, and the pressing machine body is fixed to the output end of the second hydraulic cylinder. The second hydraulic cylinder pushes the pressing machine body up and down to press the pressing machine body onto the first mold body and the second mold body.

[0012] Preferably, the pad assembly includes a support plate, a limiting rod, a limiting block, a pressure plate, a spring and a pad body.

[0013] The support plate is fixed to the side of the press body. A limit rod extends through the support plate. A limit block is fixed to the top of the limit rod. The pressure plate is hinged at the end of the limit rod. A spring is mounted on the limit rod and fixed between the limit block and the support plate. The backing plate body is connected to the pressure plate. The backing plate body is used to separate the press body from the first mold body and the second mold body, preventing the press body from directly contacting the molds and causing damage to the molds.

[0014] Preferably, the pad body is provided with a through groove corresponding to the sand shooting port on the second mold body, and the pressure plate is arranged at an angle, and the pressure plate is parallel to the pad body. During the continuous downward pressure of the pressing machine body, the pressure plate and the pad body will be flattened. When the pressing machine body rises, due to the spring, the pressure plate and the pad body will be restored, and the residual coated sand on the pad body will be poured out to avoid residual coated sand on the pad body.

[0015] Preferably, the cleaning assembly includes a slide rail, a screw rod, a drive motor, a slider, a connecting arm and a U-shaped scraper.

[0016] The slide rail is fixed to a side of the first mold mounting plate away from the first mold body. The screw rod and the slider are both arranged on the inner side of the slide rail. The screw rod passes through the slider. The end of the screw rod is rotatably connected to the slide rail. The slider is threadedly connected to the screw rod. The drive motor is fixed to the end of the slide rail. The drive shaft of the drive motor is connected to the screw rod. The connecting arm is fixed to the slider. The U-shaped scraper is fixed to the end of the connecting arm. The U-shaped scraper is parallel to the upper part of the first mold body and the second mold body. The screw rod is rotated by the drive motor, and the screw rod drives the slider to move. The slider drives the U-shaped scraper to move via the connecting arm. The U-shaped scraper is used to scrape off the residual coating sand on the first mold mounting plate and the second mold mounting plate.

[0017] Preferably, the slider is fitted with the inner wall of the slide rail, the slider and the slide rail are connected by sliding, and the connecting arm and the slider are fixed by bolts to achieve detachability, which is convenient for later replacement of the scraper.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention uses a mold opening and closing assembly to open and close the first and second mold bodies. A backing plate assembly separates the pressing assembly from the opening and closing assembly, preventing direct contact between the pressing assembly and the mold, which could damage the mold. A cleaning assembly automatically scrapes away residual coated sand from the first and second mold bodies, eliminating the need for manual cleaning and achieving a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 ;

[0021] Figure 2 Schematic diagram of the three-dimensional structure of the present invention Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the structure of the mold opening and closing assembly of the present invention;

[0023] Figure 4 This is a structural diagram of the material pressing machine body and the backing plate assembly of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the cleaning component of the present invention.

[0025] In the figure: 1. Machine body; 2. Base; 201. Collecting tank; 3. Opening and closing mold assembly; 301. First mold mounting plate; 3011. First mold body; 302. Second mold mounting plate; 3021. Second mold body; 303. Fixing plate; 3031. First hydraulic cylinder; 304. Positioning rod; 4. Pressing machine assembly; 401. Second hydraulic cylinder; 402. Pressing machine body; 5. Pad assembly; 501. Support plate; 502. Limiting rod; 5021. Limiting block; 503. Pressing plate; 504. Spring; 505. Pad body; 6. Cleaning assembly; 601. Slide rail; 602. Screw rod; 603. Drive motor; 604. Slider; 605. Connecting arm; 606. U-shaped scraper. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0027] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] See also Figure 1-2 The present invention provides a technical solution: a coated sand shell pressing machine, including a body 1, a base 2, a mold opening and closing assembly 3, a pressing machine assembly 4, a pad assembly 5 and a cleaning assembly 6.

[0030] Furthermore, the base 2 is arranged on the side of the machine body 1, the opening and closing mold assembly 3 is arranged above the base 2, the pressing machine assembly 4 is arranged above the machine body 1, the pad assembly 5 is arranged below the pressing machine assembly 4, and the cleaning assembly 6 is arranged on the side of the opening and closing mold assembly 3.

[0031] Furthermore, a collecting tank 201 is provided on the base 2. The collecting tank 201 is used to collect waste sand.

[0032] For further information, see Figure 3 The mold opening and closing assembly 3 includes a first mold mounting plate 301 , a second mold mounting plate 302 , a fixing plate 303 and a positioning rod 304 .

[0033] Furthermore, the second mold mounting plate 302 is located between the first mold mounting plate 301 and the fixed plate 303, and both the first mold mounting plate 301 and the fixed plate 303 are fixed to the base 2. The positioning rod 304 passes through the second mold mounting plate 302, and the two ends of the positioning rod 304 are respectively fixed to the first mold mounting plate 301 and the fixed plate 303. The first mold body 3011 and the second mold body 3021 are respectively fixed to the opposing surfaces of the first mold mounting plate 301 and the second mold mounting plate 302. A first hydraulic cylinder 3031 is fixed to the fixed plate 303, and the output end of the first hydraulic cylinder 3031 is fixed to the first mold mounting plate 301. When the first hydraulic cylinder 3031 is operated, pushing or pulling the second mold mounting plate 302 can drive the second mold body 3021 to close or separate with the first mold body 3011.

[0034] For further information, see Figure 4 The pressing machine assembly 4 includes a second hydraulic cylinder 401 and a pressing machine body 402 .

[0035] Furthermore, the second hydraulic cylinder 401 is fixed to the machine body 1, and the pressing machine body 402 is fixed to the output end of the second hydraulic cylinder 401. The second hydraulic cylinder 401 pushes the pressing machine body 402 up and down to press the pressing machine body 402 onto the first mold body 3011 and the second mold body 3021.

[0036] For further information, see Figure 4 The pad assembly 5 includes a support plate 501, a limiting rod 502, a limiting block 5021, a pressure plate 503, a spring 504 and a pad body 505.

[0037] Furthermore, the support plate 501 is fixed to the side of the press body 402, the limiting rod 502 passes through the support plate 501, the limiting block 5021 is fixed to the top of the limiting rod 502, the pressing plate 503 is spherically hinged at the end of the limiting rod 502, the spring 504 is sleeved on the limiting rod 502, and the spring 504 is fixed between the limiting block 5021 and the support plate 501, and the pad body 505 is connected to the pressing plate 503. The pad body 505 is used to separate the press body 402 from the first mold body 3011 and the second mold body 3021, preventing the press body 402 from directly contacting the mold and causing damage to the mold.

[0038] Furthermore, the pad body 505 is provided with a through groove corresponding to the sand shooting port on the second mold body 3021, and the pressure plate 503 is arranged at an angle, and the pressure plate 503 is parallel to the pad body 505. When the pressing machine body 402 continues to press down, the pressure plate 503 and the pad body 505 will be flattened. When the pressing machine body 402 rises, due to the spring 504, the pressure plate 503 and the pad body 505 will be restored, and the residual coated sand on the pad body 505 will be poured out to avoid residual coated sand on the pad body 505.

[0039] For further information, see Figure 5 The cleaning assembly 6 includes a slide rail 601, a screw rod 602, a drive motor 603, a slider 604, a connecting arm 605 and a U-shaped scraper 606.

[0040] Furthermore, the slide rail 601 is fixed on the side of the first mold mounting plate 301 away from the first mold body 3011, the screw rod 602 and the slider 604 are both arranged on the inner side of the slide rail 601, the screw rod 602 passes through the slider 604, the end of the screw rod 602 is rotatably connected to the slide rail 601, the slider 604 is threadedly connected to the screw rod 602, the drive motor 603 is fixed at the end of the slide rail 601, the drive shaft of the drive motor 603 is connected to the screw rod 602, the connecting arm 605 is fixed to the slider 604, the U-shaped scraper 606 is fixed to the end of the connecting arm 605, and the U-shaped scraper 606 is parallel to the top of the first mold body 3011 and the second mold body 3021. A driving motor 603 is provided to drive the screw 602 to rotate, and the screw 602 is used to drive the slider 604 to move, so that the slider 604 drives the U-shaped scraper 606 to move through the connecting arm 605, and the U-shaped scraper 606 is used to scrape off the residual coated sand on the first mold mounting plate 301 and the second mold mounting plate 302.

[0041] Furthermore, the slider 604 is fitted with the inner wall of the slide rail 601, and the slider 604 and the slide rail 601 are connected by sliding, and the connecting arm 605 and the slider 604 are fixed by bolts to achieve detachability, which is convenient for later replacement of the scraper.

[0042] To sum up, when the device is in use, the first hydraulic cylinder 3031 is started, and the first hydraulic cylinder 3031 is used to push the second mold mounting plate 302 to move, so that the second mold body 3021 mounting plate drives the second mold body 3021 to move, and the second mold body 3021 is combined with the first mold body 3011, and then the second hydraulic cylinder 401 is started, so that the second hydraulic cylinder 401 pushes the pressing machine body 402 to move, so that the pressing machine body 402 drives the pad assembly 5 to move, so that the pad body 505 is fitted with the first mold body 3011 and the second mold body 3021, and continues to descend. Since the spring 504 is fixed to the limit block 5021 and the support plate 501, the limit block 5021 stretches the spring 504, causing the spring 504 to extend. The sandblasting process continues until the press body 402 is firmly pressed. After forming, the second hydraulic cylinder 401 pulls up the press body 402, while the spring 504 contracts and rebounds, resetting the pad body 505. The drive motor 603 is then activated, rotating the screw 602. This in turn drives the slider 604, which in turn moves the U-shaped scraper 606 via the connecting arm 605. This scraper 606 scrapes the coated sand off the first mold body 3011 and the second mold body 3021. Finally, the first hydraulic cylinder 3031 is used to pull the second mold body 3021 apart, allowing the finished product to be removed.

[0043] It is worth noting that the entire device is controlled by a master control button. Since the devices matched with the control button are commonly used devices and belong to existing mature technologies, their electrical connection relationships and specific circuit structures will not be described in detail here.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated 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 invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A coated sand shell pressing machine, characterized in that: It comprises a machine body (1), a base (2), a mold opening and closing assembly (3), a material pressing machine assembly (4), a backing plate assembly (5) and a cleaning assembly (6); The base (2) is arranged on the side of the machine body (1), the opening and closing mold assembly (3) is arranged above the base (2), the pressing machine assembly (4) is arranged above the machine body (1), the pad assembly (5) is arranged below the pressing machine assembly (4), and the cleaning assembly (6) is arranged on the side of the opening and closing mold assembly (3).

2. The coated sand shell pressing machine according to claim 1, characterized in that: The base (2) is provided with a collecting groove (201).

3. The coated sand shell pressing machine according to claim 1, characterized in that: The mold opening and closing assembly (3) comprises a first mold mounting plate (301), a second mold mounting plate (302), a fixing plate (303) and a positioning rod (304); The second mold mounting plate (302) is located between the first mold mounting plate (301) and the fixed plate (303), and the first mold mounting plate (301) and the fixed plate (303) are both fixed to the base (2); the positioning rod (304) passes through the second mold mounting plate (302), and the two ends of the positioning rod (304) are respectively fixed to the first mold mounting plate (301) and the fixed plate (303); the first mold main body (3011) and the second mold main body (3021) are respectively fixed to the opposite surfaces of the first mold mounting plate (301) and the second mold mounting plate (302); the first hydraulic cylinder (3031) is fixed to the fixed plate (303), and the output end of the first hydraulic cylinder (3031) is fixed to the first mold mounting plate (301).

4. The coated sand shell pressing machine according to claim 1, characterized in that: The press assembly (4) comprises a second hydraulic cylinder (401) and a press body (402); The second hydraulic cylinder (401) is fixed to the machine body (1), and the pressing machine body (402) is fixed to the output end of the second hydraulic cylinder (401).

5. The coated sand shell pressing machine according to claim 1, characterized in that: The pad assembly (5) comprises a support plate (501), a limiting rod (502), a limiting block (5021), a pressing plate (503), a spring (504) and a pad body (505); The support plate (501) is fixed on the side of the press machine body (402), the limit rod (502) passes through the support plate (501), the limit block (5021) is fixed on the top of the limit rod (502), the pressure plate (503) is ball-jointed at the end of the limit rod (502), the spring (504) is sleeved on the limit rod (502), and the spring (504) is fixed between the limit block (5021) and the support plate (501), and the pad body (505) is connected to the pressure plate (503).

6. The coated sand shell pressing machine according to claim 5, characterized in that: The pad body (505) is provided with a through groove corresponding to the sand-shooting opening on the second mold body (3021), and the pressing plate (503) is arranged in an inclined manner, and the pressing plate (503) is parallel to the pad body (505).

7. The coated sand shell pressing machine according to claim 1, characterized in that: The cleaning assembly (6) comprises a slide rail (601), a screw rod (602), a drive motor (603), a slider (604), a connecting arm (605) and a U-shaped scraper (606); The slide rail (601) is fixed on a side of the first mold mounting plate (301) away from the first mold body (3011); the screw rod (602) and the slider (604) are both arranged on the inner side of the slide rail (601); the screw rod (602) passes through the slider (604); the end of the screw rod (602) is rotatably connected to the slide rail (601); the slider (604) is threadedly connected to the screw rod (602); the drive motor (603) is fixed to the end of the slide rail (601); the drive shaft of the drive motor (603) is connected to the screw rod (602); the connecting arm (605) is fixed to the slider (604); the U-shaped scraper (606) is fixed to the end of the connecting arm (605); and the U-shaped scraper (606) is parallel to the top of the first mold body (3011) and the second mold body (3021).

8. The coated sand shell pressing machine according to claim 1, characterized in that: The slider (604) is fitted with the inner wall of the slide rail (601), the slider (604) and the slide rail (601) are connected by sliding, and the connecting arm (605) and the slider (604) are fixed by bolts.

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