Automatic sand scraping device of precoated sand core shooter

Abstract

The utility model discloses an automatic sand scraping device of a precoated sand core shooter, which comprises a mounting plate, two mounting sleeves are fixedly connected on the side wall of the mounting plate, the mounting sleeves are vertically arranged, a sand scraping plate is arranged below the mounting plate, the top end of the sand scraping plate is fixedly connected with a connecting plate, and the connecting plate is fixedly connected with the mounting plate. The upper end of the connecting plate is fixedly connected with two telescopic rods, and the two telescopic rods respectively penetrate through the two mounting sleeves in a sliding mode, a downward acting force can be applied to the connecting plate through the plurality of springs arranged between the mounting plate and the connecting plate, so that the sand scraping plate at the bottom of the connecting plate can be tightly pressed on the upper surface of the core box, and the sand scraping plate can be tightly pressed on the upper surface of the core box. The sand scraping plate is arranged at the bottom of the core box, residual sand grains on the surface of the core box due to the fact that a gap exists between the sand scraping plate and the core box are avoided, the detachable sand scraping piece is arranged at the bottom of the sand scraping plate, when the sand scraping effect is influenced by frosted sand caused by friction between the sand scraping piece and the core box, the sand scraping piece can be replaced, and therefore the whole sand scraping plate is prevented from being replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of coated sand core shooting machines, in particular to an automatic sand scraping device for coated sand core shooting machines. Background Art

[0002] Hot core box core shooting machine is a device that uses hot core box process to make coated sand shell cores. Its sand shooting device is composed of sand cylinder, air valve, sand cylinder rack, sand shooting plate and other parts. When working, the sand cylinder is pressed against the upper surface of the core box by the clamping cylinder, and the sand shooting valve is opened for sand shooting. After the air is exhausted and the sand shooting is completed, the clamping cylinder is released to complete the sand shooting and sand adding work.

[0003] According to a Chinese patent document with the announcement number CN210498278U, an automatic sand scraping device for a coated sand core shooting machine is disclosed, which includes a core box of the core shooting machine and a sand cylinder located above the core box. The sand cylinder is pressed against the core box by a clamping cylinder to realize sand shooting and sand adding. A mounting plate is installed on each side of the sand cylinder. A rubber scraping plate is connected to the mounting plate by fixing bolts, and the bottom of the scraping plate is in contact with the surface of the core box.

[0004] The above-mentioned device installs scraping plates on both sides of the sand barrel. After the exhaust sand shooting is completed and the clamping cylinder is released, the scraping plates will move with the sand barrel. During the movement, the scraping plates will automatically scrape off the sand on the surface of the core box. However, when the device is in use, the scraping plates are fixed. When there is a gap between the scraping plates and the core box, incomplete scraping is likely to occur. If the scraping plates are attached to the upper surface of the core box, the movement of the scraping plates will cause friction with the core box. When the bottom of the scraping plates is frosted, the scraping effect will also be affected. In this case, the entire scraping plates need to be replaced, which is not only troublesome to replace, but also causes a waste of resources. To this end, an automatic scraping device for a coated sand core shooting machine is proposed. Utility Model Content

[0005] The utility model aims to provide an automatic sand scraping device for a coated sand core shooting machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic scraping device of a coated sand core shooting machine, comprising a mounting plate, two mounting sleeves fixedly connected to the side walls of the mounting plate, the mounting sleeves are vertically arranged, a scraping plate is arranged under the mounting plate, the top of the scraping plate is fixedly connected to a connecting plate, the upper end of the connecting plate is fixedly connected to two telescopic rods, the two telescopic rods slide through the two mounting sleeves respectively, a plurality of springs are fixedly connected between the bottom of the mounting plate and the connecting plate, a scraping sheet is arranged at the bottom of the scraping sheet, the upper end of the scraping sheet is fixedly connected to a slide plate, the slide plate is slidably installed in a slide groove opened at the bottom of the scraping plate, and the slide plate is fixedly connected to the scraping plate through a fixing assembly.

[0007] As a further preferred embodiment of the present technical solution, two connecting holes are provided on the mounting plate.

[0008] As a further preferred embodiment of the present technical solution, the plurality of springs are distributed with equal intervals.

[0009] As a further preferred embodiment of the present technical solution, the spring is made of carbon steel.

[0010] As a further preferred embodiment of the present technical solution, the fixing assembly includes a fixing bolt and a nut, a through hole is opened on the scraping plate at a horizontal position of the slide groove, a matching hole is opened on the slide plate, the fixing bolt passes through the through hole and the matching hole, and the end of the fixing bolt is sleeved with a nut that matches its thread.

[0011] As a further preferred embodiment of the present technical solution, the diameter of the matching hole is equal to the diameter of the through hole.

[0012] As a further preferred embodiment of the present technical solution, the top end of the telescopic rod is fixedly connected to a limiting block.

[0013] The utility model provides an automatic sand scraping device for a coated sand core shooting machine, which has the following beneficial effects:

[0014] The utility model can add a downward force to the connecting plate by means of multiple springs arranged between the mounting plate and the connecting plate, so that the scraping plate at the bottom of the connecting plate can be pressed tightly against the upper surface of the core box, thereby avoiding a gap between the scraping plate and the core box, which would cause residual sand on the surface of the core box. By arranging a detachable scraping sheet at the bottom of the scraping plate, when the scraping sheet is frosted due to friction between the scraping sheet and the core box and the scraping effect is affected, only a smaller scraping sheet needs to be replaced, thereby avoiding the need to replace the entire scraping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of another viewing angle of the overall structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the disassembly of the overall structure of the utility model;

[0018] Figure 4 For this utility model Figure 3 The structural diagram of A in the figure;

[0019] In the figure: 1. Mounting plate; 2. Scraping plate; 3. Connecting plate; 4. Telescopic rod; 5. Mounting sleeve; 6. Limit block; 7. Spring; 8. Scraping plate; 9. Connecting hole; 10. Slide plate; 11. Slide groove; 12. Through hole; 13. Fixing bolt; 14. Nut; 15. Matching hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figures 1 to 4 As shown, in the present embodiment, an automatic scraping device of a coated sand core shooting machine includes a mounting plate 1, two connecting holes 9 are provided on the mounting plate 1, two mounting sleeves 5 are fixedly connected to the side wall of the mounting plate 1, the mounting sleeves 5 are vertically arranged, a scraping plate 2 is arranged below the mounting plate 1, a connecting plate 3 is fixedly connected to the top of the scraping plate 2, two telescopic rods 4 are fixedly connected to the upper end of the connecting plate 3, the two telescopic rods 4 slide through the two mounting sleeves 5 respectively, a plurality of springs 7 are fixedly connected between the bottom of the mounting plate 1 and the connecting plate 3, the plurality of springs 7 are evenly spaced, the springs 7 are made of carbon steel, a scraping sheet 8 is provided at the bottom of the scraping plate 2, a slide plate 10 is fixedly connected to the upper end of the scraping sheet 8, the slide plate 10 is slidably installed in a slide groove 11 provided at the bottom of the scraping plate 2, and the slide plate 10 is fixedly connected to the scraping plate 2 through a fixing assembly.

[0022] Among them, the fixing component includes a fixing bolt 13 and a nut 14, a through hole 12 is opened on the scraper plate 2 at a horizontal position of the slide groove 11, a matching hole 15 is opened on the slide plate 10, and the diameter of the matching hole 15 is equal to the diameter of the through hole 12. The fixing bolt 13 passes through the through hole 12 and the matching hole 15, and the end of the fixing bolt 13 is sleeved with a nut 14 that matches its thread.

[0023] The slide plate 10 can be fixed in the slide groove 11 of the scraping plate 2 through the cooperation among the through hole 12 , the matching hole 15 , the fixing bolt 13 and the nut 14 .

[0024] The top end of the telescopic rod 4 is fixedly connected to a limiting block 6 .

[0025] Such an arrangement can prevent the telescopic rod 4 from falling out of the mounting sleeve 5 .

[0026] The utility model provides an automatic sand scraping device for a coated sand core shooting machine, and the specific working principle is as follows:

[0027] The mounting plate 1 can be fixed to the side wall of the sand barrel through the connecting holes 9 and the external screws. The multiple springs 7 arranged between the mounting plate 1 and the connecting plate 3 can add a downward force to the connecting plate 3, so that the scraping plate 2 at the bottom of the connecting plate 3 can be pressed tightly against the upper surface of the core box, thereby avoiding a gap between the scraping plate 2 and the core box, which would cause residual sand on the surface of the core box. By arranging a detachable scraping sheet 8 at the bottom of the scraping sheet 2, when the scraping sheet 8 is frosted due to the friction between the scraping sheet 8 and the core box and affects the scraping effect, only a smaller scraping sheet 8 needs to be replaced, thereby avoiding the need to replace the entire scraping sheet 2.

[0028] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic sand scraping device for a coated sand core shooting machine, comprising a mounting plate (1), characterized in that: Two mounting sleeves (5) are fixedly connected to the side wall of the mounting plate (1), and the mounting sleeves (5) are vertically arranged. A scraping plate (2) is arranged below the mounting plate (1), and a connecting plate (3) is fixedly connected to the top of the scraping plate (2), and two telescopic rods (4) are fixedly connected to the upper end of the connecting plate (3). The two telescopic rods (4) slide through the two mounting sleeves (5) respectively. A plurality of springs (7) are fixedly connected between the bottom of the mounting plate (1) and the connecting plate (3). A scraping sheet (8) is arranged at the bottom of the scraping plate (2), and a slide plate (10) is fixedly connected to the upper end of the scraping sheet (8). The slide plate (10) is slidably installed in a slide groove (11) opened at the bottom of the scraping plate (2), and the slide plate (10) is fixedly connected to the scraping plate (2) through a fixing component.

2. The automatic sand scraping device for a coated sand core shooting machine according to claim 1, characterized in that: The mounting plate (1) is provided with two connection holes (9).

3. The automatic sand scraping device for a coated sand core shooting machine according to claim 1, characterized in that: The plurality of springs (7) are distributed at equal intervals.

4. The automatic sand scraping device for a coated sand core shooting machine according to claim 1, characterized in that: The spring (7) is made of carbon steel.

5. The automatic sand scraping device for a coated sand core shooting machine according to claim 1, characterized in that: The fixing assembly comprises a fixing bolt (13) and a nut (14); a through hole (12) is provided on the scraping plate (2) at a horizontal position of the slide groove (11); a matching hole (15) is provided on the slide plate (10); the fixing bolt (13) passes through the through hole (12) and the matching hole (15); and a nut (14) threadably matched with the fixing bolt (13) is sleeved on the end of the fixing bolt (13).

6. The automatic sand scraping device for a coated sand core shooting machine according to claim 5, characterized in that: The diameter of the matching hole (15) is equal to the diameter of the through hole (12).

7. The automatic sand scraping device for a coated sand core shooting machine according to claim 1, characterized in that: The top end of the telescopic rod (4) is fixedly connected to a limiting block (6).

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