Precoated sand and resin mixing device

Abstract

The utility model relates to a precoated sand and resin mixing device which comprises a sand mixing barrel, a main shaft is rotationally arranged in the sand mixing barrel, a plurality of stirring plates are arranged on the main shaft in a staggered mode, sliding rods are arranged on the stirring plates in a sliding mode, oscillating plates are arranged on the sliding rods, springs are connected between the sliding rods and the stirring plates, and wedge blocks are rotationally arranged on the inner side wall of the sand mixing barrel. The number and the height of the wedge blocks are matched with those of the stirring plates. According to the utility model, the oscillating plate is in circulating reciprocating contact with the wedge block, and the oscillating plate vibrates up and down in a reciprocating manner under the action of the spring and the wedge block, so that the hardening phenomenon of raw materials is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of coated sand, and particularly relates to a coated sand and resin mixing device. BACKGROUND

[0002] The coated sand obtained by adding an appropriate amount of 20%-30% resin can avoid thermal cracks and wrinkling of castings at high temperatures. The coated sand is usually mixed by a hot method, that is, the raw sand is heated to 140-160 DEG C, and then the hot sand is put into a sand mixer, and the powdered resin is added at the same time. The sand melts and fuses the resin to form the coated sand.

[0003] During the mixing process, high-temperature mixing can preliminarily bond the resin and the coated sand, and avoid subsequent delamination due to the density difference between the coated sand and the resin. However, during high-temperature mixing, the melted and bonded resin and coated sand may form large granular blocks, which is not conducive to subsequent use. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model provides a coated sand and resin mixing device to at least partially solve the above problems.

[0005] The utility model adopts the technical scheme as follows: the utility model provides a coated sand and resin mixing device, which comprises a sand mixing barrel, a main shaft is rotatably arranged in the sand mixing barrel, a plurality of stirring plates are arranged on the main shaft in a staggered manner, a fixed plate is arranged at the upper end of the sand mixing barrel, a second motor is arranged on the fixed plate, and the output shaft of the second motor is connected with the main shaft.

[0006] Further, in order to preheat the coated sand during mixing, a heating coil is embedded in the side wall of the sand mixing barrel.

[0007] Further, a sliding rod is slidably arranged on the stirring plate, an oscillating plate is arranged on the sliding rod, and a spring is connected between the sliding rod and the stirring plate.

[0008] Further, in order to optimize the vibration effect of the oscillating plate, actively control the amplitude and frequency, a rotating ring is rotatably arranged at the top end of the sand mixing barrel, a plurality of longitudinal rods are arranged on the lower wall of the rotating ring, a plurality of wedge blocks are arranged on the longitudinal rods in an array, the wedge blocks are rotatably arranged on the inner side wall of the sand mixing barrel, the wedge blocks are block-shaped with one end higher than the other end, and the inner side wall of the wedge blocks is arc-shaped.

[0009] Further, the outer wall of the longitudinal rod is attached to the inner wall of the sand mixing barrel, the end portion of the oscillating plate is rotatably attached to the inner side wall of the longitudinal rod, the end portion of the stirring plate is rotatably attached to the inner side wall of the wedge block, and the number and height of the wedge blocks are adapted to the stirring plate.

[0010] Further, in order to drive the swivel ring to rotate, a gear ring is fixed outside the swivel ring, a driving wheel is arranged on the gear ring and is engaged with the gear ring, and a first motor is connected to the center of the driving wheel.

[0011] The utility model discloses obtained beneficial effect as follows: oscillating plate and wedge reciprocating contact, oscillating plate is under the action of spring and wedge, reciprocating vibration, cooperation stirring board's effect, one side stirs raw material, and makes raw material vibrate, thereby avoids raw material and appears the phenomenon of hardening. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is structure schematic diagram of the utility model embodiment;

[0013] Figure 2 It is Figure 1 Sectional view;

[0014] Figure 3 It is the sectional view of swivel ring;

[0015] Figure 4 It is the position relation of main shaft and oscillating plate;

[0016] Figure 5 It is the position relation diagram of oscillating plate and wedge.

[0017] Wherein, 1, sand mixing barrel, 2, first motor, 3, driving wheel, 4, gear ring, 5, swivel ring, 6, fixed plate, 7, second motor, 8, main shaft, 9, heating coil, 10, vertical rod, 11, wedge, 12, stirring board, 13, slide rod, 14, oscillating plate, 15, spring.

[0018] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model with the embodiment of the utility model, and do not constitute the limitation of the utility model. DETAILED DESCRIPTION

[0019] The technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment, and obviously, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment;Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor are within the range of the utility model protection.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] like Figure 1 and Figure 4 As shown in the figure, the present invention provides a mixing device for coated sand and resin, including a mixing tank 1, a main shaft 8 rotatably mounted inside the mixing tank 1, a plurality of stirring plates 12 crisscrossed on the main shaft 8, a fixing plate 6 at the upper end of the mixing tank 1, a second motor 7 mounted on the fixing plate 6, the output shaft of the second motor 7 being connected to the main shaft 8, when the second motor 7 rotates, it drives the main shaft 8 to rotate, and drives the stirring plates 12 to rotate, thereby making the resin and coated sand in the mixing tank 1 fully mixed.

[0022] like Figure 2 As shown, in order to preheat the coated sand during mixing, a heating coil 9 is embedded in the side wall of the mixing drum 1. When the heating coil 9 is energized, it generates heat, which is transferred to the raw materials in the mixing drum 1 to raise the temperature of the materials so that they can bond with the resin.

[0023] A sliding rod 13 is slidably mounted on the mixing plate 12, and an oscillating plate 14 is mounted on the sliding rod 13. A spring 15 is connected between the sliding rod 13 and the mixing plate 12. Under the action of the sliding rod 13 and the spring 15, the oscillating plate 14 can reciprocate perpendicularly to the mixing plate 12. When the oscillating plate 14 rotates with the mixing plate 12, the coated sand applies resistance to the oscillating plate. The direction and magnitude of this resistance are not stable, thus applying forces of different directions and magnitudes to the oscillating plate 14. With the action of the spring 15, the raw material can be reciprocated, breaking up the slabs that are bonded in the raw material and making the material more uniform.

[0024] like Figure 2 , Figure 3 and Figure 5 As shown, in order to optimize the vibration effect of the vibrating plate 14 and actively control the amplitude and frequency, a rotating ring 5 is provided at the top of the sand mixing barrel 1. Multiple longitudinal rods 10 are provided on the lower wall of the rotating ring 5. Wedges 11 are arranged in an array on the longitudinal rods 10. The wedges 11 are rotatably set on the inner wall of the sand mixing barrel 1. The wedges 11 are blocks with one end higher than the other end, and the inner wall of the wedges 11 is arc-shaped.

[0025] The outer wall of the longitudinal rod 10 is attached to the inner wall of the sand mixing barrel 1, the end of the oscillating plate 14 is attached to the inner side wall of the longitudinal rod 10, the end of the stirring plate 12 is attached to the inner side wall of the wedge block 11, the number and height of the wedge block 11 are matched with the stirring plate 12, when the stirring plate 12 rotates to the wedge block 11, the oscillating plate 14 rotates to the lowest point of the wedge block 11, when the stirring plate 12 continuously rotates, the oscillating plate 14 moves upward along the slope of the wedge block 11 and drives the sliding rod 13 to move upward under the compression of the spring 15, when the stirring plate 12 rotates to the gap between adjacent wedge blocks 11, the oscillating plate 14 no longer receives the supporting force of the wedge block 11 and slides downward under the action of the spring 15, thereby realizing the oscillation effect of reciprocating upward and downward movement.

[0026] As shown in Figure 1 and Figure 2 In order to drive the rotation of the rotating ring 5, a gear ring 4 is fixed outside the rotating ring 5, a driving wheel 3 is engaged on the gear ring 4, a first motor 2 is connected at the center of the driving wheel 3, and the first motor 2 drives the gear ring 4 to rotate through the driving wheel 3, thereby driving the rotating ring 5 to rotate.

[0027] In specific work, after the heating coil 9 is powered on to the preheating temperature, all the raw materials to be mixed are poured into the sand mixing barrel 1, and the first motor 2 and the second motor 7 are started.

[0028] The first motor 2 drives the stirring plate 12 and the oscillating plate 14 to rotate through the main shaft 8, the second motor 7 drives the rotating ring 5 to rotate through the driving wheel 3 and the gear ring 4, thereby driving the longitudinal rod 10 to rotate, the longitudinal rod 10 drives the wedge block 11 to rotate when rotating, the wedge block 11 rotates relative to the oscillating plate 14, and when the two rotate relative to each other, the frequency at which the oscillating plate 14 contacts the wedge block 11 can be improved, the oscillation frequency of the oscillating plate 14 can be improved, and a better mixing effect can be achieved.

[0029] When the oscillating plate 14 meets the wedge block 11, the oscillating plate 14 rises along the slope of the wedge block 11 against the resistance of the spring 15, until the oscillating plate 14 moves into the gap between adjacent wedge blocks 11, and the oscillating plate 14 is pulled back to the lowest position by the spring 15, thereby realizing the effect of reciprocating oscillation.

[0030] In this process, the stirring plate 12 realizes the first step of uniform mixing of the material, the heating coil 9 improves the bonding speed of the resin and the coated sand, and the oscillating plate 14 can avoid the resin from being bonded into large particle blocks, thereby improving the mixing effect.

[0031] It is to be noted that the relationship terms such as first and second, and the like, are used only to differentiate one entity or action from another, and do not necessarily require or imply any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] The above describes the utility model and its implementation, this kind of description is not limited, the embodiment shown in the drawing is only one of the utility model, the actual structure is not limited to this. In general, if the ordinary skilled person in the art is inspired, without departing from the utility model creation tenet, not creative design the structure mode and example similar to this technical scheme, all should belong to the protection scope of the utility model.

Claims

1. A coated sand and resin mixing device comprising a sand mixing barrel (1), characterized in that, Also include: The main shaft (8) is rotatably arranged in the sand mixing barrel (1), a plurality of stirring plates (12) are arranged on the main shaft (8) in staggered manner, a slide rod (13) is slidably arranged on the stirring plate (12), an oscillating plate (14) is arranged on the slide rod (13), and a spring (15) is connected between the slide rod (13) and the stirring plate (12); The wedge block (11) is rotatably arranged on the inner side wall of the sand mixing barrel (1), the number and height of the wedge block (11) are matched with the stirring plate (12).

2. The coated sand and resin mixing apparatus according to claim 1, wherein: The sand mixing barrel (1) is embedded with a heating coil (9) in the side wall.

3. The coated sand and resin mixing apparatus of claim 1, wherein: A rotating ring (5) is rotatably arranged at the top end of the sand mixing barrel (1), a gear ring (4) is fixedly arranged outside the rotating ring (5), a driving wheel (3) is meshingly arranged on the gear ring (4), and a first motor (2) is connected at the center of the driving wheel (3).

4. The coated sand and resin mixing apparatus of claim 3, wherein: A plurality of longitudinal rods (10) are arranged on the lower wall of the rotating ring (5), the outer wall of the longitudinal rod (10) is attached to the inner wall of the sand mixing barrel (1), and the wedge blocks (11) are arranged on the longitudinal rods (10).

5. The coated sand and resin mixing apparatus of claim 4, wherein: The end of the oscillating plate (14) is rotatably attached to the inner side wall of the longitudinal rod (10).

6. The coated sand and resin mixing apparatus of claim 1, wherein: The end of the stirring plate (12) is rotatably attached to the inner side wall of the wedge block (11).

7. The coated sand and resin mixing apparatus of claim 1, wherein: A fixed plate (6) is arranged at the upper end of the sand mixing barrel (1), a second motor (7) is arranged on the fixed plate (6), and the output shaft of the second motor (7) is connected with the main shaft (8).

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