Pouring device for casting
By designing a casting device for castings, the combination of flip plates and ceramic sealing plates is used to solve the problem of slag defects in castings, the dependence on operator skills is reduced, and the product quality and qualification rate are improved.
Patent Information
- Application Number
- CN202411677479.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-02-25
AI Technical Summary
The prior art is difficult to effectively solve the defects in casting slag inclusions, especially in the case of vacuum furnace pouring, the operator's skill level is high, and the cost of cultivating excellent casting and smelting casting operators is high.
A casting device for castings is designed, including a tundra and a cylindrical tundra shell. Through the cooperation of the flap and the ceramic sealing plate, the flow control of the metal liquid is realized, the angle of the tundra is adjusted to achieve sealing, and the dependence on the skills of the operator is reduced.
It effectively reduces the generation of casting slag inclusions, reduces the dependence on workers' skills level, improves product quality and pass rate, and reduces the company's skill training costs.
Smart Images
Figure CN119501042A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of casting, in particular to a pouring device for castings. Background Art
[0002] With the development of society, the requirements for the intrinsic quality of castings are getting higher and higher. In actual production, slag inclusion in castings is one of the common casting defects. For products that require non-destructive testing, slag inclusion defects are the main reason for product scrapping. The generation of product slag inclusion is closely related to the slag removal and slag blocking technical level of the operator. In particular, vacuum furnace dumping and pouring cannot achieve slag removal and slag blocking, which requires higher skill levels of personnel. At the same time, it takes not only a long time to train an excellent casting melting and pouring operator, but also a high quality cost.
[0003] In order to overcome the slag inclusion defect, large castings can use plug-out ladle pouring and filter filtering to reduce the influence of the operator's technical level. However, small castings use plug-out ladle pouring because of the small amount of molten metal and the rapid cooling is difficult to achieve. Thin-walled castings use filter filtering when pouring, and the filter affects the flow rate of the molten metal, resulting in insufficient pouring of the casting. The use of a flip-plate ladle pouring device can well solve the problem of rapid cooling and flow rate of molten metal. It is one of the feasible methods to solve the slag inclusion defect of castings, especially the slag inclusion problem of vacuum furnace casting castings. The casting ladle pouring device is simple and easy to operate, with low investment cost and simple operation. It reduces the dependence on the skills of the operator and reduces the cost of personnel skill training. It is suitable for the pouring of small castings and vacuum castings that cannot be poured with plug-out ladle, especially for the pouring of non-destructive testing castings. It can effectively reduce the waste caused by slag inclusion in castings, while reducing the dependence on the skill level of workers, improving product quality and pass rate, and reducing the cost of personnel skill training for enterprises. Summary of the invention
[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a pouring device for castings, reduce slag inclusion defects in castings and the dependence on operator skills, and improve product quality.
[0005] The object of the present invention is achieved in that:
[0006] A pouring device for castings comprises a tundish (14) and a cylindrical tundish shell (13), wherein the tundish (14) is located inside the tundish shell (13).
[0007] The bottom of the tundish shell (13) is provided with a discharge mounting hole (135), a flap mounting lug, and an adjusting screw hole (137); the discharge mounting hole (135) is located at the bottom center of the tundish shell (13); the flap mounting lug is located on one side of the discharge mounting hole (135); a flap mounting hole (136) is provided on the flap mounting lug; a flap (21) is hingedly connected to the flap mounting lug through the flap mounting hole (136); a T-shaped slot (214) is provided on the flap (21); a ceramic sealing plate (22) is slidably fitted in the T-shaped slot (214); a sealing plate clamping adjusting bolt (24) is fitted on the flap (21); the sealing plate clamping adjusting bolt (24) presses and fixes the ceramic sealing plate (22);
[0008] A discharge pipe opening (142) is provided at the center of the bottom of the tundish (14), and the discharge pipe opening (142) passes through a discharge installation hole (135) on the tundish shell (13). The end surface of the discharge pipe opening (142) is a sealing plane (144). A spherical surface (143) is provided around the discharge pipe opening (142) at the lower part of the tundish (14). The spherical surface (143) is located above the discharge pipe opening (142). There are a plurality of adjusting screw holes (137) on the tundish shell (13), and the adjusting screw holes (137) are evenly arranged along the circumference of the tundish shell (13). An adjusting bolt (20) is respectively fitted in each adjusting screw hole (137). The end of the adjusting bolt (20) contacts the spherical surface (143). The adjusting bolt (20) is rotated to adjust the position of the tundish (14) so that the sealing plane (144) of the tundish (14) can fit and seal with the ceramic sealing plate (22).
[0009] The upper part of the tundish shell (13) is provided with mounting ears, the number of which is two pairs, and the two pairs of mounting ears are symmetrically arranged. The top plane of the mounting ears is a support surface (133). A clamping stud (12) is vertically arranged on the upper edge of each pair of mounting ears. The top of the clamping stud (12) is connected to a support block (16), and a clamping adjustment bolt (15) is arranged on the support block (16). A clamping plane (141) is arranged on the edge of the top of the tundish (14), and the clamping adjustment bolt (15) contacts the clamping plane (141) of the tundish (14) to achieve the fixation of the tundish (14);
[0010] The free end of the flap (21) is hinged to one end of a driven rod, the other end of the driven rod is hinged to one end of a swing rod (4), the other end of the swing rod (4) is connected to a driving mechanism, and the driving mechanism drives the flap (21) to open and close through the swing rod (4) and the driven rod, thereby controlling the flow of the molten metal in the tundish (14).
[0011] Preferably, the intermediate package shell (13) comprises a left shell (131) and a right shell (132) which are symmetrically arranged, the left shell (131) and the right shell (132) are fixedly connected by bolts, and flap mounting ears are respectively provided on the left shell (131) and the right shell (132); threaded shafts (211) are provided on both sides of the free end of the flap (21), and the driven rod comprises a main driven rod (8) and a secondary driven rod (9); one end of the secondary driven rod (9) is connected to the main driven rod (8) by a connecting stud (6), and the other end of the secondary driven rod (9) and the corresponding end of the main driven rod (8) are hinged to the threaded shafts (211) on both sides of the free end of the flap (21).
[0012] Preferably, one end of the auxiliary driven rod (9) connected to the main driven rod (8) is limited by a step structure and is clearance-matched, and the connecting stud (6) is connected to the step surface of the step structure.
[0013] Preferably, the lower end of the clamping stud (12) is hinged on the tundish shell (13), and there is a positioning gap between each pair of mounting ears. The clamping stud (12) corresponds to the positioning gap, and the upper end of the clamping stud (12) is matched with a nut (17). The lower end of the nut (17) cooperates with the supporting surface (133) of the mounting ear to fix the support block (16).
[0014] Preferably, a waist-shaped groove (161) is provided on the support block (16), and the upper end of the clamping stud (12) passes through the waist-shaped groove (161) on the support block (16). The waist-shaped groove (161) is used to adapt the angle of the clamping stud (12) so that the clamping stud (12) can enter and exit the positioning gap between the mounting ears.
[0015] Preferably, the outer surface of the discharge pipe opening (142) is a conical surface (145), and the conical surface (145) passes through the discharge mounting hole (135) on the tundish shell (13) to prevent interference between the tundish (14) and the tundish shell (13).
[0016] Preferably, supporting bosses (138) are respectively provided on both sides of the tundish shell (13), and positioning conical holes (139) are provided on the supporting bosses (138). The supporting bosses (138) of the tundish shell (13) are installed above the bracket (18), and the bracket (18) is provided with conical holes (181) and positioning blocks (182). The positioning blocks (182) are used to align with the tundish shell (13) so that the positioning conical holes (139) on the tundish shell (13) are aligned with the conical holes (181) on the bracket (18), and the conical pins (19) pass through the positioning conical holes (139) on the tundish shell (13) and the conical holes (181) on the bracket (18), so that the tundish shell (13) and the bracket (18) are connected.
[0017] Preferably, a rocker bar anti-sway groove (85) is provided on the master and slave rods (8), and a rocker bar anti-sway surface (44) is provided on the rocker bar (4). The rocker bar anti-sway groove (85) and the rocker bar (4) cooperate to achieve the rotational positioning of the flap (21) and prevent the flap (21) from rotating in the process of pushing the flap (21) to rotate.
[0018] Preferably, the driving mechanism comprises a rotating shaft (2) and a driving rod (1), wherein the rotating shaft (2) is mounted on a supporting structure, and the driving rod (1) is mounted on the rotating shaft (2), and the driving rod (1) drives the swing rod (4) to swing via the rotating shaft (2).
[0019] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:
[0020] The angle of the tundish can be adjusted so that the positioning plane of the tundish can be completely fitted with the ceramic sealing plate to achieve sealing with good sealing effect. This sealing method has fast opening speed and flow rate, solving the problem of fast cooling and flow rate of molten metal.
[0021] The invention is used for pouring castings, has a simple device structure, is easy to operate, and has a low cost for making the casting device. It is suitable for pouring small castings and vacuum castings that cannot be poured using a plug-out ladle, and is particularly suitable for pouring non-destructive testing castings. It can effectively reduce waste generated by slag inclusions in castings, while reducing dependence on workers' skill levels, improving product quality and pass rate, and reducing personnel skill training costs for enterprises. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the structure of a casting pouring device;
[0023] Figure 2 yes Figure 1 Exploded diagram of
[0024] Figure 3 It is an axonometric view of the tundish shell;
[0025] Figure 4 This is the axonometric view of the tundish;
[0026] Figure 5 It is an axonometric view of the flap;
[0027] Figure 6 It is an axonometric view of the support block;
[0028] Figure 7 It is an axonometric view of the master and slave rod blocks;
[0029] Figure 8 is an axonometric view of the secondary follower rod;
[0030] Fig. 9 is the axonometric view of the pendulum;
[0031] Fig.10 This is an axonometric view of the bracket.
[0032] Reference numerals
[0033] In the attached drawings, 1-driving rod; 2-rotating shaft; 3-locking screw; 4-rocker; 41-rotating shaft mounting hole; 42-locking screw hole; 43-pin hole; 44-rocker stop surface; 5-pin; 6-connecting stud; 7-nut; 8-master and slave rods; 81-stud connecting hole; 82, 83-(master and slave rod) stopper plane; 84-(master and slave rod) pin hole; 85-rocker stopper groove; 86-(master and slave rod) shaft hole; 9-secondary slave rod; 91-(secondary slave rod) pin hole; 92, 93-(secondary slave rod) stopper plane; 94-(secondary slave rod) shaft hole; 10-fastening bolt; 11-nut; 12-pressing stud; 13-middle package shell; 131-left shell; 132-right shell; 133-support surface; 134-connecting hole ;135-discharging installation hole;136-flap installation hole;137-adjusting screw hole;138-supporting boss;139-positioning tapered hole;14-middle bag;141-pressing plane;142-discharging nozzle;143-spherical surface;144-sealing plane;145-conical surface;15-pressing and adjusting bolt;16-support block;161-waist-shaped hole;162-screw hole;17-nut;18-bracket;181-conical hole;182-positioning block;183-mounting hole;19-conical pin;20-adjusting bolt;21-flap;211-threaded shaft;212-adjusting screw hole;213-rotating shaft;214-T-slot;22-ceramic sealing plate;23-casting mold;24-sealing plate pressing and adjusting bolt;25-nut. DETAILED DESCRIPTION
[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0035] like Figures 1 to 10As shown, a pouring device for castings mainly includes a tundish shell 13, which is mainly a cylinder. The tundish shell 13 is divided into a symmetrical left shell 131 and a right shell 132. The tundish shell 13 is provided with a support surface 133, a connecting hole 134, a discharge mounting hole 135, a flap mounting hole 136, an adjusting screw hole 137, a supporting boss 138, and a positioning cone hole 139; the tundish shell 13 is provided with an adjusting bolt 20, and the adjusting bolt 20 is screwed into the adjusting screw hole 139. The tundish shell 13 is provided with a clamping stud 12, and the fastening bolt 10 passes through the connecting holes 134 of the left shell 131 and the right shell 132 of the tundish shell 13 to realize the assembly of the clamping stud 12 and the flap 21; the tundish shell 13 is provided with a support block 16, and the support block 16 is provided with a waist-shaped groove 161 and a screw hole 162, and the waist-shaped groove 161 of the support block 16 passes through the clamping stud 12 and is placed on the supporting surface 133 of the tundish shell 13 for assembly;
[0036] The tundish shell 13 is provided with a flap 21, and the flap 21 is provided with a shaft 211 for mounting the main driven rod 8 and the auxiliary driven rod 9, an adjusting screw hole 212, a rotating shaft 213, a T-shaped slot 214, and a thread 215; the rotating shaft 213 of the flap 21 is installed through the flap mounting hole 136 of the tundish shell 13; the T-shaped slot 214 of the flap 21 is installed with a ceramic sealing plate 22, and the ceramic sealing plate 22 is fixed by screwing the sealing plate pressing adjusting bolt 24 into the adjusting screw hole 212 of the flap 21;
[0037] The tundish shell 13 is provided with a tundish 14, and the tundish 14 is provided with a pressing plane 141, a discharge pipe port 142, a spherical surface 143, a sealing plane 144, and a conical surface 145. The conical surface 145 of the tundish 14 passes through the discharge mounting hole 135 of the tundish shell 13. The position of the tundish 14 is adjusted by rotating the adjusting bolt 20 so that the sealing plane 144 of the tundish 14 is sealed with the ceramic sealing plate 22. The pressing adjusting bolt 15 is screwed into the screw hole 162 on the support block 16 to contact the pressing plane 141 of the tundish 14 to fix the tundish 14.
[0038] The flap 21 is provided with a master-slave rod 8, and the master-slave rod 8 is provided with a pin hole 81, stop planes 82 and 83, a stud connection hole 84, a rocker stop groove 85, and an axle hole 86; the flap 21 is provided with a slave rod 9, and the slave rod 9 is provided with a pin hole 91, stop planes 92 and 93, and an axle hole 94; the pin hole 91 of the slave rod 9 is aligned with the pin hole 81 of the master-slave rod 8, the stop plane 92 of the slave rod 9 is clearance-matched with the stop plane 83 of the master-slave rod 8, and the stop plane 93 of the slave rod 9 is aligned with the stop plane 84 of the master-slave rod 8. The stop plane 82 of the master and slave rod 8 is clearance-fitted, the connecting stud 6 is assembled through the stud connecting hole 81 of the master and slave rod 8 and the pin hole 91 of the slave rod 9, and the nut 7 is screwed into the connecting stud 6 for fixing; the axial hole 86 of the master and slave rod 8 and the axial hole 94 of the slave rod 9 are installed on the threaded shaft 211 on both sides of the flap 21, and the nut 25 is screwed into the thread 215 of the flap 21 for axial fixing; the two sets of matching stop planes form two step structures, and the stud connecting hole 84 and the pin hole 91 are located on the step surface of the corresponding step structure.
[0039] Before the tundish shell 13 is installed, the casting mold 23 is installed below the bracket 18, and the supporting boss 138 of the tundish shell 13 is installed above the bracket 18. The bracket 18 is provided with a tapered hole 181, a positioning block 182, and a mounting hole 183; the bracket 18 is installed on the equipment or other devices (support structure) through the mounting hole 183; the tundish shell 13 is aligned with the positioning block 182 of the bracket 18, so that the positioning tapered hole 139 of the tundish shell 13 is aligned with the tapered hole 181 of the bracket 18, and the tapered pin 19 passes through the positioning tapered hole 139 of the tundish shell 13 and the tapered hole 181 of the bracket 18 for fixing;
[0040] The master and slave rods 8 are provided with a rocker rod 4, and the rocker rod 4 is provided with a shaft mounting hole 41, a locking screw hole 42, a pin hole 43, and a rocker rod stop surface 44; the rocker rod stop surface 44 of the rocker rod 4 is assembled facing the rocker rod stop groove 85 of the master and slave rods 8, and the latch pin 5 passes through the pin hole 84 of the master and slave rods 8 and the pin hole 43 of the rocker rod 4 to realize the connection between the master and slave rods 8 and the rocker rod 4; the rocker rod 4 is installed on the shaft 2, and the locking screw 3 is screwed into the locking screw hole 42 of the rocker rod 4 to realize fixation, the shaft 2 is installed on equipment or other devices, and the driving rod 1 is installed on the shaft 2; adjust the position of the casting mold 23 so that the casting mold 23 is located at the discharge pipe 142 of the tundish 14 Directly below, the driving rod 1 is rotated counterclockwise to make the ceramic sealing plate 22 and the tundish 14 in a sealed state, and the molten metal is poured into the tundish 14. After the slag inside the molten metal floats up, the driving rod 1 is quickly rotated. The driving rod 1 drives the swing rod 4 to rotate through the rotating shaft 2, and the swing rod 4 pushes the main transmission rod 8 and the auxiliary transmission rod 9 to move. The main transmission rod 8 and the auxiliary transmission rod 9 push the rotating shaft 213 of the flap 21 to rotate in the flap mounting hole 136 of the tundish shell 13. The swing rod stop surface 44 of the swing rod 4 contacts the swing rod stop groove 85 of the main transmission rod 8 to realize the rotation positioning of the flap 21, and the molten metal flows from the discharge pipe 142 of the tundish 14 into the casting mold 23 to realize the leaking ladle pouring of the molten metal. The ceramic sealing plate 22 or the tundish 14 can be replaced after the seal is damaged. The entire casting device can be quickly replaced during continuous production. The bracket 18 and the rotating shaft 2 can be installed on the equipment or specially made.
[0041] The casting device belongs to a new type of casting leaking ladle casting device. The intermediate ladle shell 13 is divided into a symmetrical left shell 131 and a right shell 132, which is convenient for the installation and disassembly of the flap 21. The intermediate ladle shell 13 is provided with an adjusting screw hole for adjusting the position of the intermediate ladle 14, and the adjusting bolt 20 is screwed into the adjusting screw hole 137 to adjust the position of the intermediate ladle 14. The flap 21 is provided with a T-slot 214, which is convenient for the installation, disassembly and replacement of the ceramic sealing plate 22. The main and slave rods 8 and the auxiliary slave rods 9 are clearance-fitted, which is convenient for the installation and disassembly of the flap 21. The main and slave rods 8 are provided with a rocker arm stop groove 85, and the rocker arm 4 is provided with a rocker arm stop surface 44, and no rotation will occur during the process of pushing the flap 21 to rotate.
[0042] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.
Claims
1. A pouring device for castings, comprising a tundish, characterized in that: The invention also comprises a cylindrical tundish shell, wherein the tundish is located in the tundish shell. The bottom of the tundish shell is provided with a discharge mounting hole, a flap mounting lug, and an adjusting screw hole. The discharge mounting hole is located at the bottom center of the tundish shell, the flap mounting lug is located on one side of the discharge mounting hole, the flap mounting lug is provided with a flap mounting hole, the flap mounting lug is hinged with a flap through the flap mounting hole, a T-slot is provided on the flap, a ceramic sealing plate is slidably fitted in the T-slot, a sealing plate clamping adjusting bolt is fitted on the flap, and the sealing plate clamping adjusting bolt presses and fixes the ceramic sealing plate; A discharge nozzle is provided at the center of the bottom of the tundish, and the discharge nozzle passes through the discharge installation hole on the outer shell of the tundish. The end face of the discharge nozzle is a sealing plane. A spherical surface is provided around the discharge nozzle at the lower part of the tundish, and the spherical surface is located above the discharge nozzle. There are multiple adjusting screw holes on the outer shell of the tundish, and they are evenly arranged along the circumference of the outer shell of the tundish. An adjusting bolt is respectively matched in each adjusting screw hole, and the end of the adjusting bolt contacts the spherical surface. The position of the tundish is adjusted by rotating the adjusting bolt so that the sealing plane of the tundish can fit and seal with the ceramic sealing plate. The upper part of the tundish shell is provided with mounting ears, the number of which is two pairs, which are symmetrically arranged, the top plane of the mounting ears is the supporting surface, and a clamping stud is vertically arranged on the upper edge of each pair of mounting ears, and a supporting block is connected to the top of the clamping stud, and a clamping adjustment bolt is arranged on the supporting block, and a clamping plane is arranged on the edge of the top of the tundish, and the clamping adjustment bolt contacts the clamping plane of the tundish to fix the tundish; The free end of the flap is hinged to one end of the driven rod, the other end of the driven rod is hinged to one end of the swing rod, and the other end of the swing rod is connected to the driving mechanism. The driving mechanism drives the flap to open and close through the swing rod and the driven rod, thereby controlling the flow of molten metal in the tundish.
2. A pouring device for castings according to claim 1, characterized in that: The shell of the intermediate package includes a left shell and a right shell which are symmetrically arranged. The left shell and the right shell are fixedly connected by bolts. The left shell and the right shell are respectively provided with flap mounting ears. Threaded shafts are provided on both sides of the free end of the flap. The driven rod includes a main driven rod and a secondary driven rod. One end of the secondary driven rod is connected to the main driven rod by a connecting stud, and the other end of the secondary driven rod and the corresponding end of the main driven rod are hinged to the threaded shafts on both sides of the free end of the flap.
3. A pouring device for castings according to claim 2, characterized in that: One end of the auxiliary driven rod connected to the main driven rod is limited by a step structure and is clearance-matched, and a connecting stud is connected to the step surface of the step structure.
4. A pouring device for castings according to claim 1, characterized in that: The lower end of the clamping stud is hinged on the outer shell of the tundish, and there is a positioning gap between each pair of mounting ears. The clamping stud corresponds to the positioning gap. The upper end of the clamping stud is matched with a nut, and the lower end of the nut cooperates with the supporting surface of the mounting ear to fix the support block.
5. A pouring device for castings according to claim 4, characterized in that: The support block is provided with a waist-shaped groove, and the upper end of the clamping stud passes through the waist-shaped groove on the support block. The waist-shaped groove is used to adapt the angle of the clamping stud so that the clamping stud can enter and exit the positioning gap between the mounting ears.
6. A pouring device for castings according to claim 1, characterized in that: The outer surface of the discharge pipe opening is a conical surface, and the conical surface passes through the discharge installation hole on the outer shell of the tundish to prevent interference between the tundish and the outer shell of the tundish.
7. A pouring device for castings according to claim 1, characterized in that: Support bosses are respectively provided on both sides of the tundish shell, and positioning conical holes are provided on the support bosses. The support bosses of the tundish shell are installed above the bracket, and the bracket is provided with conical holes and positioning blocks. The positioning blocks are used to align with the tundish shell so that the positioning conical holes on the tundish shell are aligned with the conical holes on the bracket. The conical pins pass through the positioning conical holes on the tundish shell and the conical holes on the bracket to connect the tundish shell and the bracket.
8. A pouring device for castings according to claim 1, characterized in that: The master and slave rods are provided with a swing rod anti-sway groove, and the swing rod is provided with a swing rod anti-sway surface. The swing rod anti-sway groove and the swing rod cooperate to realize the rotation positioning of the flap and prevent the flap from rotating in the process of pushing the flap to rotate.
9. A pouring device for castings according to claim 1, characterized in that: The driving mechanism comprises a rotating shaft and a driving rod. The rotating shaft is installed on the supporting structure, and the driving rod is installed on the rotating shaft. The driving rod drives the swing rod to swing through the rotating shaft.