Precoated sand core making equipment

Abstract

The utility model relates to the technical field of precoated sand equipment, in particular to precoated sand core making equipment which comprises a supporting frame, a processing barrel, a stirring mechanism, a lifting mechanism and a core making mechanism. The treatment barrel is arranged on the supporting frame and used for pretreating sand grains, the top of the treatment barrel communicates with a feeding hopper, and a plurality of heating plates are arranged at the bottom of the inner wall of the treatment barrel; the stirring mechanism is arranged on the treatment barrel; the lifting mechanism is arranged in the treatment barrel and used for lifting sand grains at the bottom of the treatment barrel to the upper part of the treatment barrel; the core making mechanism is arranged on the supporting frame, and one end of the core making mechanism communicates with the processing barrel. Through cooperative arrangement of the stirring mechanism and the lifting mechanism, the lifting auger rotates to lift sand grains at the bottom of the treatment barrel to the upper part, and meanwhile, the sand grains at the upper part fall to the bottom of the treatment barrel under the action of gravity, so that circulation between the sand grains at the upper part and the sand grains at the lower part is realized, and the sand grains are heated more uniformly; and the finished product quality and the finished product rate of core making are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coated sand equipment, in particular to a coated sand core-making equipment. Background Art

[0002] Coated sand is molding sand or core sand with a solid resin film coated on the surface of sand grains before molding. There are two coating processes: cold method and hot method. In the cold method, ethanol is used to dissolve the resin, and hexamine is added during the sand mixing process to coat both on the surface of sand grains. After the ethanol volatilizes, coated sand is obtained. In the hot method, the sand is preheated to a certain temperature, the resin is added to make it melt, and the resin is stirred to coat on the surface of sand grains. An aqueous solution of hexamine and a lubricant are added, and then it is cooled, crushed, and sieved to obtain coated sand for steel castings and iron castings.

[0003] The patent authorization announcement number CN220295801U discloses a coated sand core-making equipment, which relates to the technical field of coated sand equipment and includes a support assembly. The support assembly includes a frame, and a control box is fixedly installed outside the frame. In the utility model, a stirring box body is fixedly installed at the bottom of a top cover, a transmission belt is connected to the outside of a small pulley in a transmission manner, a large pulley is connected to the outside of the transmission belt in a transmission manner, a rotating rod is fixedly installed on the outside of the large pulley, and an angle rod is fixedly connected to the outside of the rotating rod. During use, the stirring box body plays a role of storage and placement. The motor outputs speed and torque to drive the small pulley to rotate. Through the transmission connection of the transmission belt, the large pulley rotates, further driving the rotating rod to rotate and driving the angle rod to rotate, completing the work of stirring sand grains. The heating plate can remove the moisture in the sand grains, ensure that the inside of the stirring box body is in a dry state, make the stirring easier, and can preheat the sand grains at the same time. The uniform temperature can facilitate the subsequent core-making work and improve the finished product rate.

[0004] However, the above technical solution has the following deficiencies: the fluidity of the sand grains is poor. When the rotating rod drives the angle rod to stir the sand grains in the stirring box body, it is very difficult to stir up the sand grains at the bottom of the stirring barrel. The sand grains in the upper layer always stay in the upper layer, and the sand grains in the lower layer always stay in the lower layer, resulting in uneven temperature and humidity of the sand grains in the stirring box body, affecting the finished product quality and finished product rate of core-making. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a coated sand core-making equipment aiming at the problems existing in the background art.

[0006] The technical solution of the utility model: a coated sand core-making equipment, including a support frame;

[0007] A treatment cylinder, which is arranged on the support frame for pre-treating sand grains. A feed hopper is communicated with the top of the treatment cylinder, and a plurality of heating plates are arranged at the bottom of the inner wall of the treatment cylinder;

[0008] A stirring mechanism is provided on the processing cylinder, and the working end of the stirring mechanism is located inside the processing cylinder;

[0009] A lifting mechanism is arranged inside the processing cylinder for lifting the sand grains at the bottom of the processing cylinder to the upper part of the processing cylinder;

[0010] A core-making mechanism is arranged on the support frame, and one end of the core-making mechanism is communicated with the processing cylinder.

[0011] Preferably, the support frame includes a mounting base, support rods and a support plate; there are four support rods, and the four support rods are respectively fixedly connected to the four corners of the top of the mounting base, and the four corners of the bottom of the support plate are respectively fixedly connected to the four support rods.

[0012] Preferably, the stirring mechanism includes a mounting cylinder, stirring blades, a support cylinder and a driving component; the mounting cylinder is rotatably arranged inside the processing cylinder, the bottom end of the support cylinder is fixedly connected to the bottom of the inner wall of the processing cylinder, the top end of the support cylinder is rotatably connected to the bottom end of the mounting cylinder, there are multiple groups of stirring blades, and the multiple groups of stirring blades are all fixedly connected to the mounting cylinder, and the driving component is arranged on the processing cylinder, and the output end of the driving component is in transmission connection with the mounting cylinder.

[0013] Preferably, the driving component includes a mounting frame, a first motor, a driving rod, a driving wheel and a driven wheel; the mounting frame is fixedly connected to the processing cylinder, the first motor is mounted on the mounting frame, the driving rod is in transmission connection with the output end of the first motor, the driving wheel is fixedly connected to the driving rod, the top end of the mounting cylinder penetrates through the processing cylinder and extends into the mounting frame, the driven wheel is fixedly connected to the mounting cylinder, and the driving wheel and the driven wheel are meshed with each other.

[0014] Preferably, the lifting mechanism includes a second motor, a transmission rod and a lifting auger; the second motor is fixedly connected to the mounting frame, the transmission rod is fixedly connected to the output end of the second motor, the transmission rod penetrates through the mounting frame and extends into the mounting cylinder, the lifting auger is fixedly connected to the transmission rod, the support cylinder is provided with a feeding port in a penetrating manner, and the mounting cylinder is provided with a discharging port in a penetrating manner.

[0015] Preferably, the core-making mechanism includes a sand conveying pipe, a sand blasting head, a connecting plate, a telescopic rod and a hot core box mold; one end of the sand conveying pipe is communicated with the bottom end of the processing cylinder, the inlet of the sand blasting head is communicated with the sand conveying pipe, there are two connecting plates, and the two connecting plates are both fixedly connected to the support frame, there are two telescopic rods, and the two telescopic rods are both fixedly connected to the connecting plate, the hot core box mold is a split type, and the two pieces of the hot core box mold are respectively connected to the two telescopic rods.

[0016] Compared with the prior art, the above technical solutions of the present utility model have the following beneficial technical effects:

[0017] Through the cooperative setting between the stirring mechanism and the lifting mechanism, during the process of heating and dehumidifying the sand grains, the stirring blades rotate to stir the sand grains in the treatment cylinder, making the sand grains evenly heated. The lifting auger rotates to lift the sand grains at the bottom of the treatment cylinder to the upper part, and at the same time, the sand grains at the upper part fall to the bottom of the treatment cylinder under the action of gravity, realizing the circulation between the upper sand grains and the lower sand grains, making the sand grains heated more evenly, and thus improving the finished product quality and yield of core making. Description of the Drawings

[0018] Figure 1 Is a perspective view of an embodiment proposed by the present utility model;

[0019] Figure 2 Is a cross-sectional view of the treatment cylinder in an embodiment proposed by the present utility model;

[0020] Figure 3 Is a cross-sectional view of the mounting frame in an embodiment proposed by the present utility model;

[0021] Figure 4 Is a cross-sectional view of the mounting cylinder in an embodiment proposed by the present utility model;

[0022] Figure 5 Is a perspective view of the support cylinder in an embodiment proposed by the present utility model.

[0023] Reference Numerals: 1, support frame; 11, mounting seat; 12, support rod; 13, support plate; 2, treatment cylinder; 3, stirring mechanism; 31, mounting cylinder; 32, stirring blade; 33, drive assembly; 331, mounting frame; 332, first motor; 333, drive rod; 334, driving wheel; 335, driven wheel; 34, support cylinder; 35, feed inlet; 36, discharge opening; 4, lifting mechanism; 41, second motor; 42, transmission rod; 43, lifting auger; 5, core making mechanism; 51, sand conveying pipe; 52, sand blasting head; 53, connecting plate; 54, telescopic rod; 55, hot core box mold; 6, feed hopper; 7, heating plate. Detailed Embodiment

[0024] Embodiment 1

[0025] As Figures 1-5 shown, a coated sand core making device proposed by the present utility model includes a support frame 1, a treatment cylinder 2, a stirring mechanism 3, a lifting mechanism 4 and a core making mechanism 5;

[0026] The support frame 1 includes a mounting seat 11, support rods 12 and a support plate 13; there are four support rods 12, and the four support rods 12 are respectively fixedly connected to the four corners of the top of the mounting seat 11, and the four corners of the bottom of the support plate 13 are respectively fixedly connected to the four support rods 12;

[0027] The processing cylinder 2 is arranged on the support frame 1 for the pretreatment of sand grains. The top of the processing cylinder 2 is communicated with a feed hopper 6, and a plurality of heating plates 7 are arranged at the bottom of the inner wall of the processing cylinder 2;

[0028] The stirring mechanism 3 is arranged on the processing cylinder 2, and the working end of the stirring mechanism 3 is located inside the processing cylinder 2;

[0029] The lifting mechanism 4 is arranged inside the processing cylinder 2 for lifting the sand grains at the bottom of the processing cylinder 2 to the upper part of the processing cylinder 2;

[0030] The core making mechanism 5 is arranged on the support frame 1, and one end of the core making mechanism 5 is communicated with the processing cylinder 2.

[0031] Embodiment Two

[0032] As Figures 2-3 shown, a coated sand core making device proposed by the present utility model, compared with Embodiment One, this embodiment also specifically discloses the structure of the stirring mechanism 3; the stirring mechanism 3 includes a mounting cylinder 31, stirring blades 32, a support cylinder 34 and a driving component 33; the mounting cylinder 31 is rotatably arranged inside the processing cylinder 2, the bottom end of the support cylinder 34 is fixedly connected to the bottom of the inner wall of the processing cylinder 2, the top end of the support cylinder 34 is rotatably connected to the bottom end of the mounting cylinder 31, a plurality of groups of stirring blades 32 are arranged, and multiple groups of stirring blades 32 are all fixedly connected to the mounting cylinder 31, the driving component 33 is arranged on the processing cylinder 2, and the output end of the driving component 33 is in transmission connection with the mounting cylinder 31; the driving component 33 includes a mounting frame 331, a first motor 332, a driving rod 333, a driving wheel 334 and a driven wheel 335; the mounting frame 331 is fixedly connected to the processing cylinder 2, the first motor 332 is installed on the mounting frame 331, the first motor 332 is a variable frequency motor and is connected to the control system and the power supply through a wire, the driving rod 333 is in transmission connection with the output end of the first motor 332, the driving wheel 334 is fixedly connected to the driving rod 333, the top end of the mounting cylinder 31 penetrates through the processing cylinder 2 and extends into the mounting frame 331, the driven wheel 335 is fixedly connected to the mounting cylinder 31, and the driving wheel 334 and the driven wheel 335 are meshed with each other.

[0033] Embodiment Three

[0034] As Figures 3-4As shown in the figure, a core-making device for coated sand proposed by the present utility model further specifically discloses the structure of the lifting mechanism 4 compared with Embodiment 2; the lifting mechanism 4 includes a second motor 41, a transmission rod 42, and a lifting auger 43; the second motor 41 is fixedly connected to the mounting frame 331. The second motor 41 is a variable-frequency motor and is connected to the control system and the power supply through wires. The transmission rod 42 is fixedly connected to the output end of the second motor 41. The transmission rod 42 passes through the mounting frame 331 and extends into the mounting cylinder 31. The lifting auger 43 is fixedly connected to the transmission rod 42. The support cylinder 34 is provided with a feed port 35 through it, and the mounting cylinder 31 is provided with a discharge port 36 through it.

[0035] Embodiment 4

[0036] As Figure 1 As shown in the figure, a core-making device for coated sand proposed by the present utility model further specifically discloses the structure of the core-making mechanism 5 compared with Embodiment 3; the core-making mechanism 5 includes a sand delivery pipe 51, a sand-blasting head 52, a connecting plate 53, a telescopic rod 54, and a hot core box mold 55; one end of the sand delivery pipe 51 is communicated with the bottom end of the processing cylinder 2. The inlet of the sand-blasting head 52 is communicated with the sand delivery pipe 51. There are two connecting plates 53, and both connecting plates 53 are fixedly connected to the support frame 1. There are two telescopic rods 54, and both telescopic rods 54 are fixedly connected to the connecting plate 53. The hot core box mold 55 is split, and the two hot core box molds 55 are respectively connected to the two telescopic rods 54.

[0037] The sand grains are sent into the processing cylinder 2 through the feed hopper 6. The first motor 332, the second motor 41, and the heating plate 7 are turned on through the control panel. The heating plate 7 works to heat and dehumidify the sand grains in the processing cylinder 2. The first motor 332 works to drive the driving wheel 334 to rotate through the driving rod 333. The driving wheel 334 rotates to drive the driven wheel 335, the mounting cylinder 31, and the stirring blades 32 to rotate together through meshing. The stirring blades 32 rotate to stir the sand grains in the processing cylinder 2, so that the sand grains are heated evenly. The second motor 41 works to drive the lifting auger 43 to rotate through the transmission rod 42. The lifting auger 43 rotates to lift the sand grains at the bottom of the processing cylinder 2 to the upper part. At the same time, the sand grains at the upper part fall to the bottom of the processing cylinder 2 under the action of gravity, realizing the circulation between the upper sand grains and the lower sand grains, making the sand grains heated more evenly. The heated and dehumidified sand grains are sent into the hot core box mold 55 through the sand-blasting head 52 for core making.

[0038] The above has described in detail the embodiments of the present utility model in conjunction with the drawings. However, the present utility model is not limited to this. Various changes can be made without departing from the gist of the present utility model within the knowledge scope of those skilled in the art to which it pertains.

Claims

1. A coated sand core making equipment, characterized in that: include: Support frame (1); A processing cylinder (2) is arranged on the support frame (1) and is used for pre-processing sand particles. The top of the processing cylinder (2) is connected to a feed hopper (6), and a plurality of heating plates (7) are arranged at the bottom of the inner wall of the processing cylinder (2); A stirring mechanism (3) is arranged on the processing tube (2), and a working end of the stirring mechanism (3) is located inside the processing tube (2); A lifting mechanism (4) is arranged in the processing cylinder (2) and is used to lift sand particles at the bottom of the processing cylinder (2) to the upper part of the processing cylinder (2); The core making mechanism (5) is arranged on the support frame (1), and one end of the core making mechanism (5) is connected to the processing cylinder (2).

2. The coated sand core making equipment according to claim 1, characterized in that: The support frame (1) comprises a mounting seat (11), a support rod (12) and a support plate (13); four support rods (12) are provided, the four support rods (12) are respectively fixedly connected to the four corners of the top of the mounting seat (11), and the four corners of the bottom of the support plate (13) are respectively fixedly connected to the four support rods (12).

3. The coated sand core making equipment according to claim 1, characterized in that: The stirring mechanism (3) comprises a mounting cylinder (31), stirring blades (32), a supporting cylinder (34) and a driving assembly (33); the mounting cylinder (31) is rotatably arranged in the processing cylinder (2); the bottom end of the supporting cylinder (34) is fixedly connected to the bottom of the inner wall of the processing cylinder (2); the top end of the supporting cylinder (34) is rotatably connected to the bottom end of the mounting cylinder (31); a plurality of groups of stirring blades (32) are arranged; the plurality of groups of stirring blades (32) are fixedly connected to the mounting cylinder (31); the driving assembly (33) is arranged on the processing cylinder (2); and the output end of the driving assembly (33) is drivingly connected to the mounting cylinder (31).

4. The coated sand core making equipment according to claim 3, characterized in that: The driving assembly (33) comprises a mounting frame (331), a first motor (332), a driving rod (333), a driving wheel (334) and a driven wheel (335); the mounting frame (331) is fixedly connected to the processing cylinder (2), the first motor (332) is mounted on the mounting frame (331), the driving rod (333) is transmission-connected to the output end of the first motor (332), the driving wheel (334) is fixedly connected to the driving rod (333), the top end of the mounting cylinder (31) passes through the processing cylinder (2) and extends into the mounting frame (331), the driven wheel (335) is fixedly connected to the mounting cylinder (31), and the driving wheel (334) and the driven wheel (335) are meshed with each other.

5. The coated sand core making equipment according to claim 4, characterized in that: The lifting mechanism (4) comprises a second motor (41), a transmission rod (42) and a lifting auger (43); the second motor (41) is fixedly connected to the mounting frame (331), the transmission rod (42) is fixedly connected to the output end of the second motor (41), the transmission rod (42) passes through the mounting frame (331) and extends into the mounting tube (31), the lifting auger (43) is fixedly connected to the transmission rod (42), a feeding port (35) is opened through the support tube (34), and a discharging port (36) is opened through the mounting tube (31).

6. The coated sand core making equipment according to claim 1, characterized in that: The core making mechanism (5) comprises a sand conveying pipe (51), a sand blasting head (52), a connecting plate (53), a telescopic rod (54) and a hot core box mold (55); one end of the sand conveying pipe (51) is connected to the bottom end of the processing tube (2), the inlet of the sand blasting head (52) is connected to the sand conveying pipe (51), two connecting plates (53) are provided, and the two connecting plates (53) are fixedly connected to the support frame (1), two telescopic rods (54) are provided, and the two telescopic rods (54) are fixedly connected to the connecting plate (53), and the hot core box mold (55) is a split type, and the two hot core box molds (55) are respectively connected to the two telescopic rods (54).

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