Investment casting mold shell firing equipment

Abstract

The utility model provides investment casting mold shell firing equipment, and relates to the technical field of investment casting. A through groove is formed in the tank body, a sealing plate is arranged at the through groove and slides on the tank body, a welding seat is fixed on the tank body, two groups of bearing seats are mounted on the welding seat through bolts, and a spiral groove roller is mounted between the two groups of bearing seats; according to the wax mold cleaning device, molten wax in a wax mold is collected through the collecting barrel, during cleaning, the first motor is operated to enable the sealing plate to be lifted upwards, the second motor is operated to enable the lead screw to rotate, the collecting barrel is made to move rightwards and output from the through groove in the tank body, and at the moment, the collecting barrel can be taken out and cleaned; the work flow of wax collection and cleaning is simplified; the interior of the tank body is heated through the heater, it is ensured that the wax mold reaches the needed temperature in the firing process, hot air flow is input into the tank body through the hot air flow injection pipe, it is ensured that all parts of the wax mold are heated in a balanced mode, and the problem of local overheating or underheating is avoided.

Description

Technical Field

[0001] This utility model relates to the field of investment casting technology, and in particular to an investment casting mold shell firing device. Background Technology

[0002] Investment casting, also known as lost-wax casting, involves a production process that mainly includes wax pressing, wax repair, tree assembly, shell making, shell firing, pouring, shell removal, post-processing, and inspection. The metal parts produced are typically mass-produced using fusible materials (such as wax or plastic) as models. First, a fusible mold is pressed out using a metal mold on a wax injection machine. Then, multiple layers of refractory material are coated onto the fusible mold. After the refractory coating dries and hardens, a shell is formed. If a wax model is used, steam or hot water is used to melt the wax model from the shell, and then the fusible material inside the shell is melted and allowed to flow out. After the shell is fired to make it solid, molten liquid metal is poured into it. The liquid metal cools and solidifies in the shell before being removed from the shell, yielding the desired metal parts. Investment casting can produce precise and complex castings that closely resemble the final shape of the product. Metal parts obtained through investment casting can be used directly without machining or with minimal machining. It is widely used in manufacturing industries such as aerospace, automobiles, machine tools, medical devices, and cutting tools. This utility model is an investment casting mold shell firing equipment.

[0003] Existing mold firing equipment cannot effectively remove all the molten wax inside the mold during the sintering process, and cannot provide uniform heat to the wax mold when heating it. Utility Model Content

[0004] This disclosure relates to an investment casting mold shell firing device to solve the problems of existing mold shell firing devices being unable to effectively remove the molten wax inside the mold shell during the sintering process, and being unable to provide uniform heat to the wax mold when heating it.

[0005] In a first aspect, this disclosure provides an investment casting mold shell firing apparatus, specifically comprising: a tank;

[0006] The tank body has a through groove, and a sealing plate is installed at the through groove. The sealing plate slides on the tank body, and a welding seat is fixed on the tank body. Two sets of bearing seats are bolted to the welding seat, and a spiral grooved roller is installed between the two sets of bearing seats. A gearbox is bolted to the upper end of the welding seat, and a motor is bolted to the gearbox. The output shaft of the gearbox is connected to the upper end of the spiral grooved roller. Two sets of rails are fixed between the two sets of bearing seats, and connecting plates slide on the two sets of rails. A mating seat rotates on the right end of the connecting plate, and a roller is installed on the mating seat. The roller moves in the spiral groove on the spiral grooved roller. A fixed plate is fixed inside the tank body, and a slide rail is bolted to the fixed plate. A sliding plate slides on the slide rail, and a lead screw is mounted on the fixed plate via bearings. The lead screw is threaded to the lower end of the sliding plate. A collection bucket is installed at the upper end of the sliding plate. A motor seat is fixed on the tank body, and a second motor is bolted to the motor seat. The output shaft of the second motor is connected to the lead screw.

[0007] In at least some embodiments,

[0008] The upper end of the tank is provided with a top cover, and a top seat is installed on the top cover by bolts. A second gearbox is provided on the upper end of the top seat, and a third motor is installed on the second gearbox by bolts. The lower end of the second gearbox is in contact with the upper end of the top seat.

[0009] In at least some embodiments,

[0010] A welding frame is welded onto the tank body. Two sets of support rods are bolted onto the welding frame. Contact wheels are installed on both sets of support rods. A hydraulic rod is fixed on the welding frame. A lifting seat is fixed on the piston rod of the hydraulic rod. A rail plate is fixed to the lower end of the lifting seat. The front and rear ends of the rail plate are in contact with the contact wheels on the two sets of support rods, respectively.

[0011] In at least some embodiments,

[0012] The landing gear is connected to the No. 2 gearbox by bolts. A heater is installed on the top cover, and a heat injection pipe and a pressure relief pipe are provided on the top cover.

[0013] In at least some embodiments,

[0014] A connecting column is installed at the lower end of the output shaft of the No. 3 motor. A partition is fixed at the lower end of the connecting column. Six sets of mounting blocks are provided at the lower end of the partition. Two sets of spacer blocks are fixed at the upper end of each of the six sets of mounting blocks. The upper end of the spacer blocks is fixed to the lower end of the partition.

[0015] In at least some embodiments,

[0016] The six sets of mounting blocks and partitions are connected by a rotating ring. The lower end of the rotating ring has six sets of arc-shaped grooves arranged in an annular array. A cylinder seat is hinged to the partition, and a second hydraulic rod is hinged to the cylinder seat. The piston rod of the second hydraulic rod is connected to the rotating ring through a pin.

[0017] In at least some embodiments,

[0018] There are movable blocks between two adjacent sets of mounting blocks. The upper end of the movable block moves within the arc-shaped groove at the lower end of the rotating ring. Expansion plates are installed on all six sets of movable blocks by bolts. The lower end of the six sets of mounting blocks is fixed with a bottom cover.

[0019] This utility model provides a casting mold shell firing device for investment casting, which has the following beneficial effects:

[0020] The internal structure of this invention features a fixed plate, on which a slide rail is bolted and mounted. A sliding plate slides along the slide rail, and a lead screw is mounted on the fixed plate via a bearing. The lead screw is threaded into the lower end of the sliding plate. A collection bucket is located at the upper end of the sliding plate to collect the melted wax from the wax mold. During cleaning, a first motor lifts the sealing plate upwards, and a second motor rotates the lead screw, causing the collection bucket to move to the right and exit through a slot on the tank. The collection bucket can then be removed and cleaned. This simplifies the wax collection and cleaning process, reduces labor intensity, and improves operational safety and convenience.

[0021] Furthermore, in this invention, the interior of the tank is heated by a heater to ensure that the wax model reaches the required temperature during the firing process. Hot air is injected into the tank through a hot air injection pipe to ensure even heating of all parts of the wax model during firing, avoiding localized overheating or underheating. The expansion of the six expansion plates is achieved by retracting the second hydraulic rod, thus expanding and fixing the wax model. The third motor rotates the wax model, and the height of the wax model can be adjusted by extending and retracting the first hydraulic rod, allowing the wax model to move within the tank. This ensures uniform heating of the wax model during the firing process, thereby improving the quality and efficiency of investment casting. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0023] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0024] In the attached diagram:

[0025] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0026] Figure 2A schematic diagram of the top cover of this application is shown;

[0027] Figure 3 A schematic diagram of the partition structure of this application is shown;

[0028] Figure 4 A schematic diagram of the rotating ring of this application is shown;

[0029] Figure 5 A schematic diagram of the collection bucket of this application is shown;

[0030] Figure 6 A schematic diagram of the welding seat of this application is shown;

[0031] Figure 7 This application shows Figure 6 A magnified structural diagram of part A in the middle.

[0032] List of reference numerals

[0033] 1. Tank body; 11. Top cover; 111. Top seat; 12. Welding frame; 121. Support rod; 122. Hydraulic rod No. 1; 123. Lifting seat; 1231. Rail plate; 13. Gearbox No. 2; 131. Electric motor No. 3; 1311. Connecting column; 14. Heater; 15. Hot flow injection pipe; 16. Pressure relief pipe; 17. Baffle plate; 171. Mounting block; 1711. Spacer block; 172. Rotating ring; 173. Cylinder seat; 1731. Hydraulic rod No. 2; 174. Movable block; 1741. Expansion plate; 175. Bottom cover;

[0034] 2. Fixed plate; 21. Lead screw; 22. Slide rail; 23. Sliding plate; 24. Collection bucket; 25. Motor base; 26. No. 2 motor;

[0035] 3. Sealing plate; 31. Welding seat; 311. Bearing seat; 312. Spiral groove roller; 313. Rail rod; 314. Connecting plate; 3141. Mating seat; 32. No. 1 gearbox; 321. No. 1 motor. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] Example 1: Please refer to Figures 1 to 7 :

[0038] This utility model proposes a casting mold shell firing device, including: a tank 1;

[0039] A through groove is provided on the tank body 1, and a sealing plate 3 is provided at the through groove. The sealing plate 3 slides on the tank body 1, and a welding seat 31 is fixed on the tank body 1. Two sets of bearing seats 311 are bolted to the welding seat 31, and a spiral grooved roller 312 is installed between the two sets of bearing seats 311. A first gearbox 32 is bolted to the upper end of the welding seat 31, and a first motor 321 is bolted to the first gearbox 32. The output shaft of the first gearbox 32 is connected to the upper end of the spiral grooved roller 312. Two sets of rail rods 313 are fixed between the two sets of bearing seats 311, and connecting plates 314 slide on the two sets of rail rods 313. The right end of plate 314 has a rotatable mating seat 3141, on which a roller is installed. The roller moves in the spiral groove on the spiral groove roller 312. Inside the tank body 1, a fixed plate 2 is fixed. A slide rail 22 is installed on the fixed plate 2 by bolts. A sliding plate 23 slides on the slide rail 22. A lead screw 21 is installed on the fixed plate 2 by bearings. The lead screw 21 is threadedly engaged with the lower end of the sliding plate 23. A collection bucket 24 is provided at the upper end of the sliding plate 23. A motor base 25 is fixed on the tank body 1. A second motor 26 is installed on the motor base 25 by bolts. The output shaft of the second motor 26 is connected to the lead screw 21.

[0040] In this embodiment of the disclosure,

[0041] A top cover 11 is provided at the upper end of the tank body 1. A top seat 111 is bolted to the top cover 11. A second gearbox 13 is provided at the upper end of the top seat 111. A third motor 131 is bolted to the second gearbox 13. The lower end of the second gearbox 13 contacts the upper end of the top seat 111. A welding frame 12 is welded to the tank body 1. Two sets of support rods 121 are bolted to the welding frame 12. Contact wheels are installed on both sets of support rods 121. A first hydraulic rod 122 is fixed, and a lifting seat 123 is fixed on the piston rod of the first hydraulic rod 122. A rail plate 1231 is fixed to the lower end of the lifting seat 123. The front and rear ends of the rail plate 1231 are in contact with the contact wheels on the two sets of support rods 121, respectively. Its function is: running the third motor 131 can make the wax model rotate, and extending and retracting the first hydraulic rod 122 can adjust the height of the wax model, so that the wax model can move in the tank 1, and achieve uniform heating of the wax model during the firing process.

[0042] Example 2, based on Example 1,

[0043] The lifting seat 123 is connected to the second gearbox 13 by bolts. A heater 14 is installed on the top cover 11, and a heat injection pipe 15 and a pressure relief pipe 16 are provided on the top cover 11. The function is to heat the inside of the tank 1 through the heater 14 to ensure that the wax model reaches the required temperature during the firing process, and to input hot air into the inside of the tank 1 through the heat injection pipe 15 to ensure that the wax model is heated evenly in all parts during the firing process, avoiding the problem of local overheating or underheating.

[0044] Example 3, based on Examples 1 and 2,

[0045] A connecting column 1311 is installed at the lower end of the output shaft of motor 131. A partition 17 is fixed at the lower end of the connecting column 1311. Six sets of mounting blocks 171 are provided at the lower end of the partition 17. Two sets of spacer blocks 1711 are fixed at the upper end of each of the six sets of mounting blocks 171. The upper end of the spacer blocks 1711 is fixed to the lower end of the partition 17. A rotating ring 172 rotates between the six sets of mounting blocks 171 and the partition 17. The lower end of the rotating ring 172 has six sets of arc-shaped grooves arranged in a ring. A cylinder seat 173 is hinged to the partition 17. A second hydraulic rod 1731 is hinged to the cylinder seat 173. The piston rod of 731 is connected to the rotating ring 172 via a pin. There is a movable block 174 between two adjacent sets of mounting blocks 171. The upper end of the movable block 174 moves in the arc groove at the lower end of the rotating ring 172. An expansion plate 1741 is bolted to each of the six sets of movable blocks 174. The lower end of the six sets of mounting blocks 171 is fixed with a bottom cover 175. Its function is to rotate the rotating ring 172 by contracting the second hydraulic rod 1731. The rotation of the rotating ring 172 can drive the six sets of movable blocks 174 to move, so that the six sets of expansion plates 1741 expand outward, thereby expanding and fixing the wax model.

[0046] The working principle of this embodiment is as follows: During use, retracting the second hydraulic rod 1731 causes the rotating ring 172 to rotate. The rotation of the rotating ring 172 drives the six sets of movable blocks 174 to move, causing the six sets of expansion plates 1741 to expand outward, thereby expanding and fixing the wax model. The heater 14 heats the inside of the tank 1 to ensure that the wax model reaches the required temperature during the firing process. Hot air is injected into the tank 1 through the hot air injection pipe 15 to ensure that the wax model is heated evenly in all parts during the firing process. Running the third motor 131 can make the wax model rotate. Extending the first hydraulic rod 122 can adjust the height of the wax model, allowing the wax model to move inside the tank 1, thus achieving uniform heating of the wax model during the firing process. The molten wax drips into the collection bucket 24. Running the first motor 321 lifts the sealing plate 3 upward. Running the second motor 26 rotates the lead screw 21, causing the collection bucket 24 to move to the right and exit from the through slot on the tank 1. At this time, the collection bucket 24 can be removed and cleaned, simplifying the wax collection and cleaning process.

[0047] The following points should be noted in this article:

[0048] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0049] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0050] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure.

Claims

1. An investment casting mold shell firing device, comprising: Tank body (1); characterized in that, The tank body (1) is provided with a through groove, and a sealing plate (3) is provided at the through groove. The sealing plate (3) slides on the tank body (1), and a welding seat (31) is fixed on the tank body (1). Two sets of bearing seats (311) are installed on the welding seat (31) by bolts. A spiral groove roller (312) is installed between the two sets of bearing seats (311). A gearbox (32) is installed on the upper end of the welding seat (31) by bolts. A motor (321) is installed on the gearbox (32) by bolts. The output shaft of the gearbox (32) is connected to the upper end of the spiral groove roller (312). Two sets of rails (313) are fixed between the two sets of bearing seats (311). A connecting plate (314) slides on the two sets of rails (313). (314) has a mating seat (3141) on its right end. A roller is installed on the mating seat (3141). The roller moves in the spiral groove on the spiral groove roller (312). A fixing plate (2) is fixed inside the tank (1). A slide rail (22) is installed on the fixing plate (2) by bolts. A sliding plate (23) slides on the slide rail (22). A lead screw (21) is installed on the fixing plate (2) by bearings. The lead screw (21) is threaded with the lower end of the sliding plate (23). A collection bucket (24) is set on the upper end of the sliding plate (23). A motor base (25) is fixed on the tank (1). A second motor (26) is installed on the motor base (25) by bolts. The output shaft of the second motor (26) is connected to the lead screw (21).

2. The investment casting mold shell firing equipment according to claim 1, characterized in that, The upper end of the tank (1) is provided with a top cover (11), and a top seat (111) is installed on the top cover (11) by bolts. A second gearbox (13) is provided on the upper end of the top seat (111), and a third motor (131) is installed on the second gearbox (13) by bolts. The lower end of the second gearbox (13) is in contact with the upper end of the top seat (111).

3. The investment casting mold shell firing equipment according to claim 2, characterized in that, A welding frame (12) is welded onto the tank body (1). Two sets of support rods (121) are installed on the welding frame (12) by bolts. Contact wheels are installed on both sets of support rods (121). A hydraulic rod (122) is fixed on the welding frame (12). A lifting seat (123) is fixed on the piston rod of the hydraulic rod (122). A rail plate (1231) is fixed at the lower end of the lifting seat (123). The front and rear ends of the rail plate (1231) are in contact with the contact wheels on the two sets of support rods (121).

4. The investment casting mold shell firing equipment according to claim 3, characterized in that, The landing seat (123) is connected to the second gearbox (13) by bolts. A heater (14) is installed on the top cover (11), and a heat injection pipe (15) and a pressure relief pipe (16) are provided on the top cover (11).

5. The investment casting mold shell firing equipment according to claim 2, characterized in that, A connecting column (1311) is installed at the lower end of the output shaft of the No. 3 motor (131). A partition (17) is fixed at the lower end of the connecting column (1311). Six sets of mounting blocks (171) are provided at the lower end of the partition (17). Two sets of spacer blocks (1711) are fixed at the upper end of each of the six sets of mounting blocks (171). The upper end of the spacer block (1711) is fixed to the lower end of the partition (17).

6. The investment casting mold shell firing equipment according to claim 5, characterized in that, A rotating ring (172) rotates between the six sets of mounting blocks (171) and the partition plate (17). The lower end of the rotating ring (172) has six sets of arc-shaped grooves arranged in an annular array. A cylinder seat (173) is hinged on the partition plate (17), and a second hydraulic rod (1731) is hinged on the cylinder seat (173). The piston rod of the second hydraulic rod (1731) is connected to the rotating ring (172) through a pin.

7. The investment casting mold shell firing equipment according to claim 6, characterized in that, Between two adjacent sets of mounting blocks (171), there is a movable block (174). The upper end of the movable block (174) moves within the arc-shaped groove at the lower end of the rotating ring (172). An expansion plate (1741) is installed on each of the six sets of movable blocks (174) by bolts. A bottom cover (175) is fixed to the lower end of each of the six sets of mounting blocks (171).

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