Sand storage cylinder for sand casting molding machine

Abstract

The utility model provides a sand storage cylinder for a sand casting molding machine, and belongs to the technical field of casting equipment. Comprising a sand storage outer box, a feeding port is formed in the top of the sand storage outer box, a discharging barrel is arranged at the bottom of the sand storage outer box, an auger is arranged in the discharging barrel, a sand storage inner barrel is horizontally and rotatably arranged in the sand storage outer box, an opening is formed in the top of the sand storage inner barrel and is aligned to the feeding port of the sand storage outer box, and a plurality of sand outlet holes are formed in the side wall of the sand storage inner barrel in a penetrating mode. After molding sand is added into the sand storage inner cylinder, when the sand storage cylinder needs to output the molding sand outwards, the sand storage inner cylinder is driven to rotate, scraping blades on the inner wall of the sand storage inner cylinder scrape the molding sand in the rotating process, the molding sand is discharged from sand outlet holes, the amount of the molding sand output from the sand storage inner cylinder is controlled, and the molding sand is output through an auger at the bottom of the sand storage outer box. And the sand can be prevented from being clustered and caked in the auger output process. And the injection effect of the casting molding machine in the atomization sand injection process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to foundry equipment technical field especially relates to a sand type foundry molding machine uses sand storage cylinder. BACKGROUND

[0002] Sand casting refers to the use of sand to make the internal cavity of the same shape of the part, through the injection of molten metal liquid into the cavity, after the metal liquid cooling and solidification form the casting method of casting, the material for manufacturing sand type is called molding material, the material for manufacturing sand type is called sand, the basic raw material of sand is casting sand and sand binder, the most commonly used casting sand is siliceous sand, when the high temperature performance of silica sand cannot meet the use requirement, then special sand such as zircon sand, chromite sand, corundum sand is used. In the process of sand casting, molding machine can be used to automatically inject sand into the mold and extrude through pressure to quickly form sand on the surface of the part mold.

[0003] The patent with the publication number CN222242508U discloses a sand feeding mechanism of molding machine, which comprises a base, a sand storage box is arranged above the base, supporting legs are fixed at four corners of the sand storage box, the four supporting legs are slidably connected to the base, an auger is arranged in the sand storage box, one end of the auger is rotatably connected to one side wall of the sand storage box through a bearing, a servo motor is fixed to one side wall of the sand storage box, an output shaft of the servo motor is fixedly connected to one end of the auger, a through opening is formed in the side wall of the sand storage box away from the servo motor, and a sand discharging pipeline is fixed to the side wall of the sand storage box and located at the through opening.

[0004] The sand storage box usually stores a large amount of sand, after the sand in the lower layer is extruded by the sand above and the auger, it is easy to form a group and a lump, which brings a large pressure to the atomization sand shooting system of the molding machine. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model provides a sand type foundry molding machine uses sand storage cylinder.

[0006] In order to achieve the above invention purpose, the utility model adopts the technical scheme as follows:

[0007] A sand type foundry molding machine uses sand storage cylinder is provided, which comprises a sand storage outer box, a feeding port is formed in the top of the sand storage outer box, a discharging cylinder is arranged at the bottom of the sand storage outer box, an auger is arranged in the discharging cylinder, the auger extends into the sand storage outer box, a sand storage inner cylinder is horizontally rotatably arranged in the sand storage outer box, a first driving member for driving the sand storage inner cylinder to rotate is arranged on the sand storage outer box, the top of the sand storage inner cylinder is open and aligned with the feeding port of the sand storage outer box, a plurality of sand discharging holes are formed through the side wall of the sand storage inner cylinder.

[0008] Further, a scraping piece is arranged on the inner wall of the sand storage inner cylinder outside the sand discharging hole.

[0009] Further, the first driving member is a driving motor, the driving motor is used for driving the sand storage cylinder to rotate in two directions, the feeding port of the sand storage outer box and the upper opening of the sand storage inner cylinder are respectively provided with a filter screen, and a collecting mechanism for discharging filtered impurities is arranged between the sand storage outer box and the sand storage inner cylinder.

[0010] Further, the feeding port of the sand storage outer box is provided with a support with a hollow bottom and a hollow side, the support is provided with a conical filter screen, the upper opening of the sand storage inner cylinder is outwardly expanded in a bucket shape, and the collecting mechanism comprises a collecting track arranged in the circumferential direction of the sand storage inner cylinder, the collecting track is located above the sand outlet hole of the sand storage inner cylinder, the collecting track is provided with a discharge pipeline, and the discharge pipeline extends out of the sand storage outer box and is externally connected with a collecting box.

[0011] Further, the bottom of the sand storage inner cylinder is coaxially provided with a connecting rod, a plurality of stirring rods are fixedly arranged on the connecting rod, and the driving motor is used for driving the connecting rod to rotate in the opposite direction relative to the sand storage inner cylinder.

[0012] The beneficial effects of the sand storage cylinder are as follows: after the molding sand is added into the sand storage inner cylinder, when the sand storage cylinder needs to output the molding sand outward, the sand storage inner cylinder is driven to rotate, the scraping piece on the inner wall of the sand storage inner cylinder scrapes the molding sand and discharges the molding sand from the sand outlet hole in the rotating process, the amount of the molding sand output from the sand storage inner cylinder is controlled, and the molding sand is output through the auger at the bottom of the sand storage outer box, so that the molding sand is prevented from being extruded in the output process of the auger, the molding sand is prevented from being formed into a ball or a lump, and the spraying effect of the foundry molding machine in the atomized sand spraying process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the sand storage cylinder of the embodiment of the application.

[0014] Figure 2 It is an internal structure schematic view of the sand storage cylinder of the embodiment of the application.

[0015] 1, sand storage outer box; 11, feeding port; 12, discharge cylinder; 13, support; 2, sand storage inner cylinder; 21, sand outlet hole; 22, scraping piece; 3, driving motor; 4, filter screen; 5, collecting track; 51, discharge pipeline; 6, connecting rod; 61, stirring rod. DETAILED DESCRIPTION

[0016] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings of the specification and specific embodiments.

[0017] The embodiment of the application discloses a sand storage cylinder used by a sand mold casting molding machine, referring to Figure 1 and Figure 2, including sand storage outer box 1 and sand storage inner cylinder 2, the top of sand storage outer box 1 is provided with feeding port 11, the bottom of sand storage outer box 1 is connected with discharge cylinder 12, auger is arranged in discharge cylinder 12, one end of auger is installed on sand storage outer box 1, auger extends into sand storage outer box 1, the bottom of sand storage outer box 1 is provided with guide inclined plane inclined to auger, sand in sand storage outer box 1 slides into auger and can be output from sand storage outer box 1 through auger.

[0018] Sand storage inner cylinder 2 is rotatably installed in sand storage outer box 1, the rotation axis of sand storage inner cylinder 2 is vertical, the top of sand storage inner cylinder 2 is open and faces feeding port 11 of sand storage outer box 1, a plurality of sand outlet holes 21 are formed through the side wall of sand storage inner cylinder 2, and first driving member for driving sand storage inner cylinder 2 to rotate is arranged on sand storage outer box 1.In the embodiment, the first driving member can be driving motor 3, driving motor 3 is fixedly installed on the bottom of sand storage outer box 1, the output shaft of driving motor 3 extends into sand storage outer box 1 and drives sand storage inner cylinder 2 to rotate through gear transmission.After sand is poured into sand storage inner cylinder 2, sand storage inner cylinder 2 is driven to rotate, sand is thrown out of sand outlet holes 21 of sand storage inner cylinder 2 during the rotation of sand storage inner cylinder 2, enters sand storage outer box 1 and is finally output by auger, so that sand is prevented from being pressed to form a group or a lump at the auger.

[0019] Further, scraper 22 is arranged on the inner wall of sand storage inner cylinder 2 outside sand outlet hole 21, scraper 22 is arranged on the same side of sand storage inner cylinder 2 in the rotation direction of sand storage inner cylinder 2, and sand is scraped out of sand outlet hole 21 under the action of scraper 22, so that sand can be smoothly scraped out and fall to the bottom of sand storage outer box 1.

[0020] Further, filter screen 4 is arranged at the feeding port 11 of sand storage outer box 1 and the upper opening of sand storage inner cylinder 2, and large impurities in sand can be effectively filtered through filter screen 4 during the pouring of sand into sand storage inner cylinder 2.Filter screen 4 rotates with the rotation of sand storage inner cylinder 2, so that the lumped sand in the poured sand can be dispersed, and driving motor 3 can be a motor capable of bidirectional rotation, so that sand storage inner cylinder 2 is driven to reverse, scraper 22 is blocked in front of sand outlet hole 21, and the leakage of sand from sand storage inner cylinder 2 is reduced.

[0021] And, the collecting mechanism for discharging the filtered impurities is arranged between the sand storage outer box 1 and the sand storage inner cylinder 2, in the embodiment of the application, the collecting mechanism comprises a collecting track 5 which is fixedly arranged on the inner wall of the sand storage outer box 1 in a ring shape. The feeding port 11 of the sand storage outer box 1 is provided with a support 13 with a hollow bottom and side, and the support 13 is provided with a conical filter screen 4, the upper part of the sand storage inner cylinder 2 is outwardly expanded in a hopper shape, the collecting track 5 is located above the sand discharging hole 21 of the sand storage inner cylinder 2, and the collecting track 5 is provided with a discharging pipe 51 which extends out of the sand storage outer box 1 and is externally connected with a collecting box. The impurities filtered by the first layer of filter screen 4 at the feeding port 11 of the sand storage outer box 1 are guided by the conical filter screen 4, fall into the collecting track 5 below after passing through the hollow hole of the support 13, and the inner bottom wall of the collecting track 5 is inclined to the discharging pipe, so that the impurities can be discharged.

[0022] Further, a connecting rod 6 is coaxially arranged at the bottom of the sand storage inner cylinder 2, a plurality of stirring rods 61 are fixedly arranged on the connecting rod 6, and the driving motor 3 is used to drive the connecting rod 6 to rotate reversely relative to the sand storage inner cylinder 2. Specifically, a through hole is coaxially arranged at the bottom of the sand storage inner cylinder 2, the connecting rod 6 extends into the sand storage inner cylinder 2 after passing through the through hole, a upwardly protruding conical material blocking hopper is coaxially arranged on the inner wall of the sand storage inner cylinder 2, the through hole is coaxially arranged on the protrusion, the sand accumulation in the through hole can be reduced, the connecting rod 6 can be coaxially connected with the output shaft of the driving motor 3, a first gear is coaxially connected with the output shaft of the driving motor 3, a second gear is rotatably connected in the sand storage outer box 1, and a gear ring is fixedly arranged at the bottom of the sand storage inner cylinder 2, the first gear, the second gear and the gear ring are sequentially meshed, when the driving motor 3 is started, the sand storage inner cylinder 2 and the connecting rod 6 synchronously rotate reversely, the sand in the sand storage inner cylinder 2 is stirred by the stirring rods 61, and the sand can be pushed to the inner wall of the sand storage inner cylinder 2 to be discharged.

[0023] Those skilled in the art will understand that, although the preferred embodiments of the present application have been described, once the basic creative concept is known, those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application. Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A sand storage drum for use with a sand mold casting molding machine, characterized by: Including sand storage outer box (1) and sand storage inner cylinder (2), the top of the sand storage outer box (1) is provided with a feeding port (11), the bottom of the sand storage outer box (1) is provided with a discharge cylinder (12), the discharge cylinder (12) is provided with an auger, the auger extends into the sand storage outer box (1), the sand storage inner cylinder (2) is horizontally arranged in the sand storage outer box (1), the sand storage outer box (1) is provided with a first driving member for driving the sand storage inner cylinder (2) to rotate, the top of the sand storage inner cylinder (2) is open and aligned with the feeding port (11) of the sand storage outer box (1), a plurality of sand discharge holes (21) are formed through the sidewall of the sand storage inner cylinder (2).

2. A sand storage drum for use with a sand moulding machine according to claim 1, characterised in that, The inner wall of the sand storage inner cylinder (2) is provided with a scraper (22) outside the sand discharge hole (21).

3. A sand storage drum for use with a sand moulding machine according to claim 2, characterised in that, The first driving member is a driving motor (3), the driving motor (3) is used for driving the sand storage cylinder to rotate in two directions, the feeding port (11) of the sand storage outer box (1) and the upper opening of the sand storage inner cylinder (2) are respectively provided with a filter screen (4), and the sand storage outer box (1) and the sand storage inner cylinder (2) are provided with a collecting mechanism for discharging filtered impurities.

4. A sand storage drum for use with a sand moulding machine according to claim 3, characterised in that, The feeding port (11) of the sand storage outer box (1) is provided with a support (13) with a hollow bottom and side, the support (13) is provided with a conical filter screen (4), the upper opening of the sand storage inner cylinder (2) is outwardly expanded in a bucket shape, the collecting mechanism comprises a collecting track (5) arranged circumferentially along the sand storage inner cylinder (2), the collecting track (5) is located above the sand discharge hole (21) of the sand storage inner cylinder (2), the collecting track (5) is provided with a discharge pipeline (51), the discharge pipeline (51) extends out of the sand storage outer box (1) and externally connects a collecting box.

5. A sand storage drum for use with a sand moulding machine according to claim 4, characterised in that, The bottom of the sand storage inner cylinder (2) is coaxially provided with a connecting rod (6), a plurality of stirring rods (61) are fixedly arranged on the connecting rod (6), and the driving motor (3) is used for driving the connecting rod (6) to rotate in the opposite direction relative to the sand storage inner cylinder (2).

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