Device for removing impurities in inner cavity of shell of investment casting mold

Abstract

The utility model relates to the technical field of mold cleaning, in particular to an investment casting mold shell inner cavity impurity removing device which comprises a main cylinder, a containing groove is formed in the main cylinder, a threaded groove is formed in the inner side wall of the containing groove, a screw rod is connected to the interior of the containing groove in a threaded mode, and a fixing ring is fixedly connected to the outer portion of the main cylinder. A driving ring is fixedly connected to the position, located below the fixing ring, of the exterior of the main cylinder, a connecting shaft is rotatably connected to the interior of the driving ring, a gear is fixedly connected to the bottom end of the connecting shaft, a gear ring is connected to the exterior of the gear in a meshed mode, and a supporting shaft is fixedly connected to the bottom of the gear ring; compared with an existing impurity removing device for the inner cavity of the investment casting mold shell, the impurity removing device for the inner cavity of the investment casting mold shell has the advantages that due to the design of the spiral blades and the arc-shaped plates, impurities with high adsorbability on the inner wall of a mold can be rapidly removed, and the overall practicability is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold cleaning, in particular to a device for removing impurities from the inner cavity of a mold shell of an investment casting mold. Background Art

[0002] Investment casting, also known as "lost wax casting," is a precision casting method that produces castings through a series of steps: wax pattern creation, slurry coating, wax melting, firing, and pouring molten metal. However, during the investment casting process, solid debris can easily accumulate within the mold shell during handling or after high-temperature firing. This debris can be flushed into the mold cavity during the pouring of the hot molten metal, causing defects such as slag inclusions in the casting, seriously affecting the metallurgical quality of the casting and even rendering it scrapped.

[0003] At present, the common cleaning method includes blowing with compressed air. By extending the air pipe into the interior of the mold, a strong blowing force is generated by compressed air to blow away the debris on the inner wall of the mold. Finally, when the gas encounters the bottom of the mold, it will spread to the top of the mold, thereby taking out the debris. This operation is convenient and fast, but when the adsorption force of the debris on the inner wall of the mold is too high, the compressed air cannot blow the debris loose, and it may also be blown to the blind end of the mold, which is time-consuming and laborious.

[0004] Therefore, it is particularly important to improve the existing investment casting mold shell cavity impurity removal device, design a new investment casting mold shell cavity impurity removal device to solve the above technical defects, and improve the practicality of the overall investment casting mold shell cavity impurity removal device. Utility Model Content

[0005] The purpose of the utility model is to provide an impurity removal device for the inner cavity of an investment casting mold shell. Through the overall design, the spiral blades are in contact with the inner wall of the mold, and debris with strong adsorption force is separated from the mold. The arc plate and the hexagonal plate are used to collect the debris falling on the inner wall. At the same time, the air pipe adsorbs the debris at the bottom of the mold, and the dust box collects them uniformly, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A device for removing impurities from the inner cavity of an investment casting mold shell comprises a main cylinder, a receiving groove is provided inside the main cylinder, a threaded groove is provided on the inner side wall of the receiving groove, a screw is connected to the internal thread of the receiving groove, a fixing ring is fixedly connected to the outside of the main cylinder, a driving ring is fixedly connected to the outside of the main cylinder and located below the fixing ring, a connecting shaft is rotatably connected to the inside of the driving ring, a gear is fixedly connected to the bottom end of the connecting shaft, a gear is meshed with a gear ring on the outside of the gear ring, a support shaft is fixedly connected to the bottom of the gear ring, and a spiral blade is fixedly connected to the outside of the support shaft.

[0008] As a preferred solution of the present invention, a connecting sleeve is fixedly connected to the interior of the gear ring, a ball is rotatably connected between the connecting sleeve and the gear ring, and the top of the support shaft is designed as an inclined structure.

[0009] As a preferred solution of the present invention, the bottom end of the main cylinder is fixedly connected to a hexagonal plate, the bottom of the hexagonal plate is fixedly connected to a mounting seat, the internal rotation of the mounting seat is connected to a linkage rod, and the end of the linkage rod away from the mounting seat is fixedly connected to an arc plate.

[0010] As a preferred solution of the present invention, the screw rod extends to the bottom of the main cylinder, the external thread of the screw rod is connected to a rotating sleeve, the external part of the rotating sleeve is symmetrically fixedly connected to a rotating seat, and the internal part of the rotating seat is rotatably connected to a connecting rod.

[0011] As a preferred solution of the present invention, one end of the connecting rod away from the rotating seat is fixedly connected to a plug shaft, and the plug shaft extends into the interior of the linkage rod, and the connecting rod is rotatably connected to the linkage rod through the plug shaft.

[0012] As a preferred solution of the present invention, the interior of the screw rod is fixedly connected to an air pipe, the air pipe extends to the outside of the screw rod, and the bottom end of the air pipe is fixedly connected to an adsorption head, and the adsorption head is designed in a trumpet-shaped structure.

[0013] As a preferred solution of the present invention, a reinforcement ring is fixedly connected to the top of the main cylinder, and the reinforcement rings are distributed at equal intervals. The end of the air pipe away from the adsorption head is fixedly connected to a dust collecting box, and multiple groups of filter screens are provided inside the dust collecting box, and the density inside the multiple groups of filter screens decreases successively.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] In the utility model, the main cylinder is inserted into the mold, the connecting shaft is used to mesh the gear and the gear ring, and the spiral blade is driven to rotate, so that the impurities attached to the inner cavity of the mold are crushed. The screw rod is rotated, and the rotating sleeve is made to move downward on the outside of the screw rod, so that the connecting rod is unfolded and pushes the linkage rod, so that the linkage rod swings, driving the arc plate and the hexagonal plate to be in a parallel state. At the same time, when the main cylinder is pulled out of the mold, the arc plate brings some stubborn impurities out of the mold, generates suction through the air pipe, and contacts the bottom end of the inner side of the mold through the adsorption head, so as to absorb the impurities and finally conduct them to the inside of the dust collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the rotating sleeve of the utility model;

[0018] Figure 3 This is a schematic diagram of the spiral blade structure of the utility model.

[0019] In the figure: 1. Main cylinder; 2. Receiving groove; 3. Screw; 4. Fixed ring; 5. Drive ring; 6. Connecting shaft; 7. Gear; 8. Gear ring; 9. Support shaft; 10. Spiral blade; 11. Ball; 12. Hexagonal plate; 13. Linkage rod; 14. Arc plate; 15. Rotating sleeve; 16. Rotating seat; 17. Connecting rod; 18. Air pipe; 19. Adsorption head; 20. Reinforcement ring; 21. Dust box; 22. Filter. DETAILED DESCRIPTION

[0020] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] Example:

[0022] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0023] A device for removing impurities from the inner cavity of an investment casting mold shell comprises a main cylinder 1, wherein the interior of the main cylinder 1 is provided with a receiving groove 2, a threaded groove on the inner side wall of the receiving groove 2, a screw rod 3 being connected to the inner thread of the receiving groove 2, the outer portion of the main cylinder 1 being fixedly connected to a fixing ring 4, the outer portion of the main cylinder 1 being fixedly connected to a driving ring 5 located below the fixing ring 4, the inner portion of the driving ring 5 being rotatably connected to a connecting shaft 6, the bottom end of the connecting shaft 6 being fixedly connected to a gear 7, the outer portion of the gear 7 being meshedly connected to a gear ring 8, the bottom of the gear ring 8 being fixedly connected to a supporting shaft 9, the outer portion of the supporting shaft 9 being fixedly connected to a spiral blade 10, when impurities appear in the inner cavity of the mold, the main cylinder 1 is fixedly connected to a fixing ring 4, the outer portion of the main cylinder 1 is fixedly connected to a driving ring 5 located below the fixing ring 4, the inner portion of the driving ring 5 being rotatably connected to a connecting shaft 6, the bottom end of the connecting shaft 6 being fixedly connected to a gear 7, the outer portion of the gear 7 being meshedly connected to a gear ring 8, the bottom of the gear ring 8 being fixedly connected to a supporting shaft 9, the outer portion of the supporting shaft 9 being fixedly connected to a spiral blade 10, By inserting the main cylinder 1 into the mold and rotating the connecting shaft 6, the gear 7 follows the connecting shaft 6 to rotate, so that the gear 7 and the gear ring 8 are engaged with each other, and the gear ring 8 is rotated outside the main cylinder 1. At the same time, the design of the fixed ring 4 drives the stability of the drive ring 5 when it is installed outside the main cylinder 1. Then, when the gear ring 8 rotates, the support shaft 9 and the gear ring 8 make the same movement, and drive the spiral blade 10 to rotate, breaking the impurities attached to the inner cavity of the mold, so that the impurities are completely separated from the inner wall of the mold, improving the integrity of the mold during the next casting, and further improving the aesthetics.

[0024] For further information, see Figure 1 and Figure 3 In this embodiment, a connecting sleeve is fixedly connected to the inside of the gear ring 8, and a ball 11 is rotatably connected between the connecting sleeve and the gear ring 8. The top of the support shaft 9 is designed with an inclined structure. When the gear ring 8 rotates at high speed, the design of the ball 11 can realize that the gear ring 8 rotates, driving the ball 11 to roll between the connecting sleeve and the gear ring 8, so that when the gear ring 8 rotates, it will not cause friction with the outside of the main tube 1, so that its smoothness is greatly improved. Through the design of the inclined surface of the support shaft 9, its diameter is larger than that of the gear ring 8 when it rotates, and it is easier to contact the inner wall of the mold.

[0025] For further information, see Figure 1 In this embodiment, the bottom end of the main cylinder 1 is fixedly connected to a hexagonal plate 12, the bottom of the hexagonal plate 12 is fixedly connected to a mounting seat, the internal rotation of the mounting seat is connected to a linkage rod 13, and the end of the linkage rod 13 away from the mounting seat is fixedly connected to an arc plate 14. After the spiral blade 10 contacts the inner wall of the mold, the impurities are separated from it, and the impurities are blocked by the hexagonal plate 12 to prevent them from falling to the bottom of the mold.

[0026] For further information, see Figure 1 and Figure 2 The outer thread of screw rod 3 is connected with the rotating sleeve 15, and the outer thread of rotating sleeve 15 is symmetrically fixedly connected with the rotating seat 16. The inner rotatable connection of rotating seat 16 is connected with connecting rod 17. The end of connecting rod 17 away from rotating seat 16 is fixedly connected with the plug shaft, and the plug shaft extends to the interior of linkage rod 13. Connecting rod 17 is rotatably connected with linkage rod 13 through plug shaft. By rotating screw rod 3, thread reaction of rotating sleeve 15 is realized on the outer surface of screw rod 3, so that rotating sleeve 15 makes downward movement on the outer surface of screw rod 3, so that connecting rod 17 is expanded and gradually tends to parallel state, thereby generating driving force, pushing linkage rod 13, so that linkage rod 13 swings, driving arc plate 14 and hexagonal plate 12 to be in parallel state, so that when main cylinder 1 is pulled out of mold, arc plate 14 will scrape against the inner wall of mold, bringing some stubborn impurities out of mold.

[0027] For further information, see Figure 1In this embodiment, the inside of the screw rod 3 is fixedly connected to an air pipe 18, which extends to the outside of the screw rod 3, and the bottom end of the air pipe 18 is fixedly connected to an adsorption head 19, which has a trumpet-shaped structure. The top of the main cylinder 1 is fixedly connected to a reinforcement ring 20, which is evenly spaced. The end of the air pipe 18 away from the adsorption head 19 is fixedly connected to a dust collecting box 21, and multiple groups of filter screens 22 are provided inside the dust collecting box 21. The density inside the multiple groups of filter screens 22 decreases successively. Suction is generated through the air pipe 18, and the adsorption head 19 contacts the bottom end of the inner side of the mold to absorb impurities, and finally conducts them to the inside of the dust collecting box 21. Through the design of the filter screen 22, the collected impurities are processed separately according to their volume.

[0028] In this embodiment, the implementation scenario is specifically as follows: when impurities appear in the mold cavity, the main cylinder 1 is inserted into the mold, and the connecting shaft 6 is rotated, so that the gear 7 follows the connecting shaft 6 to rotate, thereby realizing that the gear 7 and the gear ring 8 are meshed with each other, and the gear ring 8 is rotated outside the main cylinder 1. At the same time, the design of the fixed ring 4 drives the stability of the drive ring 5 when it is installed outside the main cylinder 1. Then, when the gear ring 8 rotates, the support shaft 9 and the gear ring 8 make the same movement, and drive the spiral blade 10 to rotate, so as to crush the impurities attached to the inner cavity of the mold, so that the impurities are completely separated from the inner wall of the mold, and by rotating the screw rod 3, the rotating sleeve 15 is threaded on the outside of the screw rod 3, so that the rotation The sleeve 15 makes a downward movement on the outside of the screw rod 3, so that the connecting rod 17 is expanded and gradually tends to a parallel state, thereby generating a driving force to push the linkage rod 13, so that the linkage rod 13 swings, driving the arc plate 14 and the hexagonal plate 12 to be in a parallel state, and the impurities are blocked by the hexagonal plate 12 to prevent them from falling to the bottom of the mold. At the same time, when the main cylinder 1 is pulled out of the mold, the arc plate 14 will scrape against the inner wall of the mold, bringing some stubborn impurities out of the mold, generating suction through the air pipe 18, and contacting the bottom end of the inner side of the mold through the adsorption head 19 to absorb the impurities, and finally conducting them to the inside of the dust box 21. Through the design of the filter screen 22, the collected impurities are processed separately according to their volume.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood 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 present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impurity removal device for an investment casting mold shell cavity, comprising a main cylinder (1), characterized in that: The main cylinder (1) is provided with a receiving groove (2) inside, a threaded groove is formed on the inner side wall of the receiving groove (2), the internal thread of the receiving groove (2) is connected to a screw rod (3), the outside of the main cylinder (1) is fixedly connected to a fixing ring (4), the outside of the main cylinder (1) and located below the fixing ring (4) is fixedly connected to a driving ring (5), the inside of the driving ring (5) is rotatably connected to a connecting shaft (6), the bottom end of the connecting shaft (6) is fixedly connected to a gear (7), the outside of the gear (7) is meshedly connected to a gear ring (8), the bottom of the gear ring (8) is fixedly connected to a support shaft (9), and the outside of the support shaft (9) is fixedly connected to a spiral blade (10).

2. The device for removing impurities from the inner cavity of an investment casting mold shell according to claim 1, characterized in that: A connecting sleeve is fixedly connected to the interior of the gear ring (8), and a ball (11) is rotatably connected between the connecting sleeve and the gear ring (8). The top of the support shaft (9) is designed to be an inclined structure.

3. The device for removing impurities from the inner cavity of an investment casting mold shell according to claim 1, characterized in that: The bottom end of the main cylinder (1) is fixedly connected to a hexagonal plate (12), the bottom of the hexagonal plate (12) is fixedly connected to a mounting seat, the interior of the mounting seat is rotatably connected to a linkage rod (13), and the end of the linkage rod (13) away from the mounting seat is fixedly connected to an arc plate (14).

4. The device for removing impurities from the inner cavity of an investment casting mold shell according to claim 1, characterized in that: The screw rod (3) extends to the bottom of the main cylinder (1), the external thread of the screw rod (3) is connected to a rotating sleeve (15), the external part of the rotating sleeve (15) is symmetrically fixedly connected to a rotating seat (16), and the internal part of the rotating seat (16) is rotatably connected to a connecting rod (17).

5. The device for removing impurities from the inner cavity of an investment casting mold shell according to claim 4, characterized in that: One end of the connecting rod (17) away from the rotating seat (16) is fixedly connected with an insertion shaft, and the insertion shaft extends into the interior of the linkage rod (13). The connecting rod (17) is rotationally connected to the linkage rod (13) via the insertion shaft.

6. The device for removing impurities from the inner cavity of an investment casting mold shell according to claim 1, characterized in that: The interior of the screw rod (3) is fixedly connected to an air pipe (18), which extends to the outside of the screw rod (3), and the bottom end of the air pipe (18) is fixedly connected to an adsorption head (19), which is designed in a trumpet-shaped structure.

7. The device for removing impurities from the inner cavity of an investment casting mold shell according to claim 6, characterized in that: A reinforcement ring (20) is fixedly connected to the top of the main cylinder (1), and the reinforcement rings (20) are distributed at equal intervals. The end of the air pipe (18) away from the adsorption head (19) is fixedly connected to a dust collecting box (21), and multiple groups of filter screens (22) are provided inside the dust collecting box (21), and the density inside the multiple groups of filter screens (22) decreases in sequence.

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