Device for wax mould welding and manufacturing method of casting mould

Abstract

The invention provides a device for wax mould welding. The device comprises an operation table; the first bracket is mounted on the operation table and is suitable for placing a blade wax mold for forming a gas turbine blade model; the second bracket is mounted on the operation table and is suitable for placing a pouring gate wax mold for forming a pouring gate for injecting casting metal liquid into the gas turbine blade model; the at least one hot melting part is mounted on the operation table and is constructed to be capable of partially extending into the upper part of the pouring gate wax mold to melt the to-be-welded position of the pouring gate wax mold; and the grabbing part is installed on the operation table and suitable for grabbing the blade wax mold and moving the blade wax mold to the to-be-welded position of the pouring gate wax mold, so that the blade wax mold is solidified on the to-be-welded position, and the casting mold with the gas turbine blade model and the pouring gate combined on the model is formed.

Description

Technical Field

[0001] At least one embodiment of the present invention relates to the field of precision casting technology, and in particular to a device for wax mold welding and a method for manufacturing a casting mold. Background Art

[0002] Investment casting is also called lost wax casting. The accuracy and stability of the geometric dimensions of the wax mold assembly directly affect the product quality of the final casting.

[0003] Traditional wax molds are usually assembled manually, which has the characteristics of poor geometric consistency, low assembly efficiency, high labor demand, etc., and the quality of the final castings is prone to instability. In particular, for the manufacture of casting molds for gas turbine blades, such precision parts, it is necessary to strictly control the welding accuracy of the wax mold. Summary of the invention

[0004] In view of this, the present invention provides a device for wax mold welding to improve the welding accuracy between the blade wax mold and the runner wax mold, thereby meeting the process requirements of precision casting of gas turbine blades.

[0005] According to an embodiment of the present invention, a device for wax mold welding is provided, comprising: an operating table; a first bracket, mounted on the operating table, suitable for placing a blade wax mold for forming a gas turbine blade model; a second bracket, mounted on the operating table, suitable for placing a runner wax mold for forming a runner for injecting casting molten metal into the gas turbine blade model; at least one hot melt portion, mounted on the operating table, configured to partially extend above the runner wax mold and melt the runner wax mold at a position to be welded; and a grasping portion, mounted on the operating table, suitable for grasping the blade wax mold and moving the blade wax mold to the position to be welded of the runner wax mold, so that the blade wax mold is solidified at the position to be welded, so as to form a casting mold having a gas turbine blade model and a runner combined with the model.

[0006] According to an embodiment of the present invention, each of the hot melt parts includes: a driving component installed on the operating table; and a hot melt component installed on the driving component, which, driven by the driving component, reciprocates in a straight line in the height direction and the lateral direction to approach or move away from the upper side of the runner wax mold.

[0007] According to an embodiment of the present invention, the driving assembly includes: a first driving seat, installed on the operating table, and configured so that the output end can move back and forth linearly in the lateral direction; and a second driving seat, installed on the output end of the first driving seat, and the hot melt assembly is installed on the output end of the second driving seat, and the second driving seat is configured so that the output end can move back and forth linearly in the height direction.

[0008] According to an embodiment of the present invention, the first driving seat includes: a first base, installed on the operating table; and a first cylinder, installed on the first base, the output end of the first cylinder extends in the transverse direction and is connected to the second driving seat through a connecting member to drive the second driving seat to reciprocate linearly in the transverse direction.

[0009] According to an embodiment of the present invention, the second driving seat includes: a second base, installed on the output end of the first driving seat, and driven by the first driving seat to move back and forth linearly in the lateral direction; and a second cylinder, installed on the second base, the output end of the second cylinder extends along the height direction, and is connected to the hot melt assembly through a connecting piece to drive the hot melt assembly to move back and forth linearly in the height direction.

[0010] According to an embodiment of the present invention, the second bracket is configured to drive the runner wax mold to rotate in a horizontal plane; the hot melt assembly includes: a support frame, mounted on the driving assembly; and a hot melt component, mounted on the support frame, configured to be roughly rectangular, and under the drive of the driving assembly, moved to the position to be welded of the runner wax mold to melt the position to be welded.

[0011] According to an embodiment of the present invention, the second bracket includes: a support seat, installed on the operating table; a rotating assembly, rotatably installed inside the support seat, and the upper part extends out of the support seat, suitable for placing the runner wax mold; and a limiting member, installed on the support seat and surrounding the outside of the rotating assembly, suitable for guiding the runner wax mold to rotate in a horizontal plane.

[0012] According to an embodiment of the present invention, the hot melt assembly includes: a support frame, mounted on the driving assembly; and a hot melt component, mounted on the support frame and configured in a roughly circular shape, which, driven by the driving assembly, moves to the edge of the upper surface of the runner wax mold to melt the edge of the upper surface of the runner wax mold.

[0013] According to an embodiment of the present invention, the grasping portion includes: a robotic arm, which is configured so that the end thereof can rotate in a horizontal plane and in a longitudinal vertical plane, so that the end of the robotic arm can approach or move away from the upper side of the first bracket and the upper side of the second bracket; and at least one grasping assembly, which is installed at the end of the robotic arm and is configured to grasp the blade wax mold placed on the first bracket and place the blade wax mold to the position of the runner wax mold to be welded.

[0014] According to an embodiment of the present invention, each of the grasping assemblies comprises: a mounting bracket mounted at the end of the robotic arm; a third cylinder mounted on the mounting bracket; and a pair of clamping heads respectively mounted on two output ends located at both ends of the third cylinder extending in the lateral direction. Driven by the third cylinder, the two clamping heads move closer to or away from each other to clamp or release the blade wax model.

[0015] According to an embodiment of the present invention, each pair of the clamping heads is constructed as two substantially L-shaped clamping plates facing each other; or, each of the clamping heads includes a base block and a clamping claw installed at the lower end of the base block, and the base block is installed on the output end of the third cylinder.

[0016] According to an embodiment of the present invention, a method for manufacturing a casting mold is also provided, comprising: using the device for wax mold welding described in the above embodiment to weld a blade wax mold to a to-be-welded position of a runner wax mold; coating the exterior of the blade wax mold and the runner wax mold that are combined with each other with ceramic slurry to form a ceramic coating; and firing the ceramic coating to melt the blade wax mold and the runner wax mold inside the ceramic slurry to form a casting mold for a gas turbine blade.

[0017] According to the device for wax pattern welding of the above embodiment of the present invention, the hot melt portion partially extends above the runner wax pattern to melt the position of the runner wax pattern to be welded, and the grasping portion grasps the blade wax pattern and moves the blade wax pattern to the position of the runner wax pattern to be welded, so that the blade wax pattern is solidified at the position of the runner wax pattern to be welded, so as to form a casting mold having a gas turbine blade model and a runner combined with the model. The device for wax pattern welding of the embodiment of the present invention can improve the welding accuracy between the blade wax pattern and the runner wax pattern, thereby meeting the process requirements of precision casting of gas turbine blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of a device for wax pattern welding according to an embodiment of the present invention;

[0019] Figure 2 It is a top view of the combination of the blade wax model and the sprue wax model;

[0020] Figure 3 is a three-dimensional schematic diagram of a second bracket of the device for wax model welding according to an embodiment of the present invention;

[0021] Figure 4 It is a three-dimensional schematic diagram of the assembly of the support base and the rotating assembly of the second bracket of the device for wax model welding according to an embodiment of the present invention;

[0022] Figure 5is a three-dimensional schematic diagram of a driving assembly of a device for wax pattern welding according to an embodiment of the present invention; and

[0023] Figure 6 It is a three-dimensional schematic diagram of a grabbing portion of a device for wax pattern welding according to an embodiment of the present invention.

[0024] In the figure:

[0025] 1- Operation table;

[0026] 2- first bracket;

[0027] 3- Second bracket;

[0028] 31-support base; 311-first substrate; 312-second substrate;

[0029] 32-rotating assembly; 321-motor; 322-turntable;

[0030] 33-limiting member;

[0031] 4-Hot melt section;

[0032] 41- driving assembly;

[0033] 411-first driving seat; 4111-first base; 4112-first cylinder;

[0034] 412-second driving seat; 4121-second base; 4122-second cylinder;

[0035] 42-hot melt assembly; 421-support frame; 422-hot melt component;

[0036] 5- Grasping part;

[0037] 51-Robotic arm;

[0038] 52-grabbing component;

[0039] 521-Mounting bracket;

[0040] 522-third cylinder;

[0041] 523-clamping head; 5231-base block; 5232-clamping claw; 5233-clamping sheet;

[0042] 6-blade wax model;

[0043] 7-Sprue wax model. DETAILED DESCRIPTION

[0044] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0045] According to the inventive concept of one aspect of the present invention, there is provided a device for wax mold welding, comprising: an operating table; a first bracket, mounted on the operating table, suitable for placing a blade wax mold for forming a gas turbine blade model; a second bracket, mounted on the operating table, suitable for placing a runner wax mold for forming a runner for injecting casting molten metal into the gas turbine blade model; at least one hot melt portion, mounted on the operating table, configured to partially extend above the runner wax mold and melt the runner wax mold at a position to be welded; and a grasping portion, mounted on the operating table, suitable for grasping the blade wax mold and moving the blade wax mold to the position to be welded of the runner wax mold, so that the blade wax mold is solidified at the position to be welded, so as to form a casting mold having a gas turbine blade model and a runner coupled to the model.

[0046] Figure 1 is a three-dimensional schematic diagram of a device for wax pattern welding according to an embodiment of the present invention; Figure 2 It is a top view of the combination of the blade wax model and the runner wax model.

[0047] According to an exemplary embodiment of the present invention, please refer to Figure 1-Figure 2 , a device for wax model welding is provided, comprising an operating table 1, a first bracket 2, a second bracket 3, at least one hot melt portion 4 and a grabbing portion 5. The first bracket 2 is mounted on the operating table 1, and is suitable for placing a blade wax mold 6 for forming a gas turbine blade model. The second bracket 3 is mounted on the operating table 1, and is suitable for placing a runner wax mold 7 for forming a runner for injecting casting molten metal into the gas turbine blade model. At least one hot melt portion 4 is mounted on the operating table 1, and is configured to be able to partially extend above the runner wax mold 7 and melt the runner wax mold 7 at a position to be welded. The grabbing portion 5 is mounted on the operating table 1, and is suitable for grabbing the blade wax mold 6, and moving the blade wax mold 6 to the position to be welded of the runner wax mold 7, so that the blade wax mold 6 is solidified at the position to be welded, so as to form a casting mold having a gas turbine blade model and a runner combined on the model.

[0048] In this embodiment, the hot melt portion 4 partially extends above the runner wax mold 7 to melt the position to be welded of the runner wax mold 7, and the gripping portion 5 grips the blade wax mold 6 and moves the blade wax mold 6 to the position to be welded of the runner wax mold 7, so that the blade wax mold 6 is solidified at the position to be welded of the runner wax mold 7, so as to form a casting mold having a gas turbine blade model and a runner combined with the model. The device for wax mold welding in the embodiment of the present invention can improve the welding accuracy between the blade wax mold 6 and the runner wax mold 7, thereby meeting the process requirements of precision casting of gas turbine blades.

[0049] Figure 5 It is a three-dimensional schematic diagram of a driving assembly of a device for wax pattern welding according to an embodiment of the present invention.

[0050] In some exemplary embodiments, referring to Figure 1-Figure 2 as well as Figure 5 Each hot melt unit 4 includes a driving assembly 41 and a hot melt assembly 42. The driving assembly 41 is mounted on the operating table 1. The hot melt assembly 42 is mounted on the driving assembly 41, and is driven by the driving assembly 41 to reciprocate linearly in the height direction and the lateral direction to approach or move away from the upper side of the sprue wax mold 7.

[0051] Through the above-mentioned setting, the hot melt component 42 is driven by the driving component 41 to move back and forth in a straight line in the height direction and the lateral direction to approach or move away from the upper side of the runner wax mold 7, thereby approaching or moving away from the position to be welded on the runner wax mold 7.

[0052] In some exemplary embodiments, referring to Figure 1-Figure 2 as well as Figure 5 The driving assembly 41 includes a first driving seat 411 and a second driving seat 412. The first driving seat 411 is mounted on the operating table 1 and is configured such that the output end moves back and forth linearly in the lateral direction. The second driving seat 412 is mounted on the output end of the first driving seat 411, and the hot melt assembly 42 is mounted on the output end of the second driving seat 412. The second driving seat 412 is configured such that the output end moves back and forth linearly in the height direction.

[0053] Through the above-mentioned arrangement, the hot melt assembly 42 is driven by the first driving seat 411 and the second driving seat 412 to reciprocate linearly in the lateral direction and the height direction.

[0054] In some exemplary embodiments, referring to Figure 1-Figure 2 as well as Figure 5 , the first driving seat 411 includes a first base 4111 and a first cylinder 4112. The first base 4111 is installed on the operating table 1. The first cylinder 4112 is installed on the first base 4111, and the output end of the first cylinder 4112 extends in the transverse direction and is connected to the second driving seat 412 through a connecting member to drive the second driving seat 412 to move back and forth in a transverse direction. Among them, the connecting member extends in a direction perpendicular to the first base 4111, and the two ends of the connecting member are respectively connected to the output end of the first cylinder 4112 and the second driving seat 412. One end of the connecting member extends out of the first base 4111, and can move back and forth in a transverse direction relative to the first base 4111.

[0055] Through the above arrangement, the second driving seat 412 is driven by the first cylinder 4112 to move linearly back and forth in the lateral direction.

[0056] In some exemplary embodiments, referring to Figure 1-Figure 2 as well as Figure 5The second driving seat 412 includes a second base 4121 and a second cylinder 4122. The second base 4121 is installed on the output end of the first driving seat 411, and moves back and forth linearly in the lateral direction under the drive of the first driving seat 411. The second cylinder 4122 is installed on the second base 4121, and the output end of the second cylinder 4122 extends in the height direction, and is connected to the hot melt assembly 42 through a connecting piece to drive the hot melt assembly 42 to move back and forth linearly in the height direction. Among them, the connecting piece extends in a direction perpendicular to the second base 4121, and the two ends of the connecting piece are respectively connected to the output end of the second cylinder 4122 and the hot melt assembly 42. One end of the connecting piece extends out of the second base 4121, and can move back and forth linearly in the height direction relative to the second base 4121.

[0057] Through the above-mentioned arrangement, the hot melt assembly 42 is driven by the second cylinder 4122 to move back and forth linearly in the height direction.

[0058] In some exemplary embodiments, referring to Figure 1-Figure 2 as well as Figure 5 The second bracket 3 is configured to drive the sprue wax mold 7 to rotate in a horizontal plane. The hot melt assembly 42 includes a support frame 421 and a hot melt component 422. The support frame 421 is mounted on the driving assembly 41. The hot melt component 422 is mounted on the support frame 421 and is configured to be roughly rectangular. Under the drive of the driving assembly 41, it moves to the position to be welded of the sprue wax mold 7 to melt the position to be welded.

[0059] In this embodiment, the runner wax mold 7 is driven to rotate in a horizontal plane by the second bracket 3, so that the position to be welded of the runner wax mold 7 is rotated to a position aligned with the hot melt component 42, so as to adjust the relative position of the hot melt component 42 and the position to be welded of the runner wax mold 7.

[0060] Figure 3 is a three-dimensional schematic diagram of a second bracket of the device for wax model welding according to an embodiment of the present invention; Figure 4 It is a three-dimensional schematic diagram of the assembly of the support base and the rotating component of the second bracket of the device for wax model welding according to an embodiment of the present invention.

[0061] In some exemplary embodiments, referring to Figure 1-Figure 4 The second bracket 3 includes a support seat 31, a rotating assembly 32 and a stopper 33. The support seat 31 is mounted on the operating table 1. The rotating assembly 32 is rotatably mounted inside the support seat 31, and the upper part extends out of the support seat 31, which is suitable for placing the runner wax mold 7. The stopper 33 is mounted on the support seat 31 and surrounds the outside of the rotating assembly 32, which is suitable for guiding the runner wax mold 7 to rotate in a horizontal plane.

[0062] In this embodiment, the support seat 31 includes a first substrate 311 and a second substrate 312 which are mounted facing each other. The first substrate 311 is mounted on the operating table 1, and the second substrate 312 is mounted above the first substrate 311. The rotating assembly 32 is mounted on the first substrate 311 and extends out of the second substrate 312, and the runner wax mold 7 is placed on the rotating assembly 32 to drive the runner wax mold 7 to rotate in a horizontal plane. Further, the stopper 33 is mounted on the second substrate 312 and surrounds the outside of the rotating assembly 32, thereby guiding the runner wax mold 7 to rotate in a horizontal plane.

[0063] The rotating assembly 32 includes a motor 321 and a rotating disk 322. The rotating disk 322 is rotatably mounted on the first substrate 311. The motor 321 is connected to the rotating disk 322 through the cooperation of a gear and a bevel gear to drive the rotating disk 322 to rotate.

[0064] In some exemplary embodiments, referring to Figure 1-Figure 2 as well as Figure 4 The hot melt assembly 42 includes a support frame 421 and a hot melt component 422. The support frame 421 is mounted on the driving assembly 41. The hot melt component 422 is mounted on the support frame 421 and is configured in a substantially circular ring shape. Under the drive of the driving assembly 41, the hot melt component 422 moves to the edge of the upper surface of the runner wax mold 7 to melt the edge of the upper surface of the runner wax mold 7.

[0065] In this embodiment, the hot melt part 422 is constructed into a roughly circular ring shape and is moved to the edge of the upper surface of the runner wax mold 7 under the drive of the drive assembly 41 to melt the edge of the upper surface of the runner wax mold 7, thereby allowing the annular portion of the blade wax mold 6 to be combined with the runner wax mold 7.

[0066] It should be noted that, in this embodiment, a temperature control circuit is further provided inside the hot melt component 422 to control the output temperature of the hot melt component 422 , thereby adjusting the melting temperature applied to the position to be welded of the runner wax mold 7 .

[0067] Figure 6 It is a three-dimensional schematic diagram of a grabbing portion of a device for wax pattern welding according to an embodiment of the present invention.

[0068] In some exemplary embodiments, referring to Figure 1-Figure 2 as well as Figure 6 The gripping part 5 includes: a mechanical arm 51 and at least one gripping assembly 52. ​​The mechanical arm 51 is configured such that the end thereof can rotate in a horizontal plane and in a longitudinal vertical plane, so that the end of the mechanical arm 51 can approach or move away from the upper side of the first bracket 2 and the upper side of the second bracket 3. At least one gripping assembly 52 is installed at the end of the mechanical arm 51, and is configured to grip the blade wax mold 6 placed on the first bracket 2, and place the blade wax mold 6 to the position to be welded of the runner wax mold 7.

[0069] In this embodiment, the robotic arm 51 drives the grasping assembly 52 to approach or move away from the upper side of the first bracket 2 and the upper side of the second bracket 3, and uses the grasping assembly 52 to grasp or release the blade wax mold 6 to move the blade wax mold 6 placed on the first bracket 2 to the position of the runner wax mold 7 to be welded.

[0070] In some exemplary embodiments, referring to Figure 1-Figure 2 as well as Figure 6 Each gripping assembly 52 includes a mounting bracket 521, a third cylinder 522, and a pair of clamping heads 523. The mounting bracket 521 is mounted at the end of the mechanical arm 51. The third cylinder 522 is mounted on the mounting bracket 521. The pair of clamping heads 523 are respectively mounted on two output ends located at both ends of the third cylinder 522 extending in the lateral direction. Under the drive of the third cylinder 522, the two clamping heads 523 approach or depart from each other to clamp or release the blade wax model 6.

[0071] Through the above arrangement, the two clamping heads 523 are driven by the third cylinder 522 to move closer to or farther from each other to clamp or release the blade wax mold 6 .

[0072] In some exemplary embodiments, referring to Figure 6 Each pair of clamping heads 523 is configured as two substantially L-shaped clamping pieces 5233 facing each other. Alternatively, each clamping head 523 includes a base block 5231 and a clamping claw 5232 mounted at the lower end of the base block 5231, and the base block 5231 is mounted on the output end of the third cylinder 522.

[0073] Through the above-mentioned arrangement, different clamping heads 523 can be selected according to the size of the part of the blade wax model 6 to be clamped, so as to facilitate the clamping of different parts of the blade wax model 6.

[0074] It should be noted that, in this embodiment, the device for wax mold welding of the embodiment of the present invention can be used to adjust the welding quality by adjusting the process parameters of the welding between the blade wax mold 6 and the runner wax mold 7. That is to say, the device for wax mold welding of the above embodiment is used to weld the blade wax mold 6 and the runner wax mold 7 with different process parameters. The parameters of the welding area of ​​the blade wax mold 6 and the runner wax mold 7 that are welded and combined with each other are measured to evaluate the welding quality between the blade wax mold 6 and the runner wax mold 7, so that the parameters of the welding area meet the preset parameter range by changing the process parameters, so as to obtain the optimal process parameters for welding the blade wax mold 6 and the runner wax mold 7.

[0075] Among them, the process parameters for welding between the blade wax mold 6 and the runner wax mold 7 include the pressing speed of the hot melt part 4 to extrude the runner wax mold 7, the pressing depth of the hot melt part 4 to extrude the runner wax mold 7, the hot melt temperature of the hot melt part 4 to melt the runner wax mold 7, and the curing time between the blade wax mold 6 and the runner wax mold 7.

[0076] The curing time is a key parameter for calculating the production time of the welding process. The production time of the welding process can be calculated by: , calculated. is the number of repetitions; t move is the movement time of the driving component 41 and the grabbing part 5 during the combination of the blade wax mold 6 and the runner wax mold 7, which is mainly limited by the movement speed of the driving component 41 and the grabbing part 5 and can be calculated; t tech is the process time, which is mainly determined by process parameters such as melting time, pressing speed of the hot melt part 4, pressing depth of the hot melt part 4, etc., and can be obtained by statistics; t wait It is the curing time, which is mainly affected by factors such as ambient temperature, melting process, wax material, etc., and is obtained based on actual environmental tests.

[0077] Furthermore, the blade wax mold 6 and the runner wax mold 7 that have been welded and combined with each other are inspected, and the geometric dimensions of the melting area of ​​the runner wax mold 7 at the position to be welded are measured with a ruler, such as the area of ​​the melting area. The geometric dimensions of the melting area are used to characterize the bonding strength between the blade wax mold 6 and the runner wax mold 7. The joining position between the blade wax mold 6 and the runner wax mold 7 is connected by an arc, and the radius of the arc at the joining position is measured with a ruler to obtain the arc radius. The arc radius is used to characterize the degree of continuity of the transition between the blade wax mold 6 and the runner wax mold 7. The geometric dimensions of the melting area and the arc radius of the joining position obtained by the above measurements are compared with the preset parameter interval of the melting area and the preset parameter interval of the arc radius to determine whether the welding process parameters meet the process requirements.

[0078] If the geometric dimensions of the melting area and the arc radius of the bonding position obtained by the above measurement do not fall into the preset parameter range of the melting area and the preset parameter range of the arc radius, change the pressing speed of the hot melt part 4 to extrude the runner wax mold 7, the pressing depth of the hot melt part 4 to extrude the runner wax mold 7, the hot melt temperature of the hot melt part 4 to melt the runner wax mold 7, and the curing time between the blade wax mold 6 and the runner wax mold 7 until the geometric dimensions of the melting area and the arc radius of the bonding position fall into the preset parameter range of the melting area and the preset parameter range of the arc radius, so as to obtain the optimal process parameters for welding between the blade wax mold 6 and the runner wax mold 7.

[0079] In addition, the bonding defects between the blade wax model 6 and the runner wax model 7 also include defects such as interlayers, welds, and bubbles, and the main measurement methods are manual visual inspection and counting.

[0080] According to an exemplary embodiment of the present invention, there is provided a method for manufacturing a casting mold, comprising:

[0081] S1: Using the wax mold welding device described in the above embodiment, the blade wax mold is welded to the position to be welded of the runner wax mold.

[0082] S2: coating the ceramic slurry on the exterior of the blade wax mold and the runner wax mold that are combined with each other to form a ceramic coating.

[0083] S3: calcining the ceramic coating to melt the blade wax mold and the runner wax mold inside the ceramic slurry to form a casting mold for the gas turbine blade.

[0084] By manufacturing the casting mold by the above method, the combination accuracy between the blade wax mold 6 and the runner wax mold 7 is improved, thereby improving the manufacturing accuracy of the casting mold for the gas turbine blade to meet the casting process requirements of the gas turbine blade, a high-precision part.

[0085] It should be noted that, in this embodiment, step S2 can be refined as follows: sticking ceramic slurry on the outside of the combined blade wax mold and the runner wax mold, and drying, and repeating the above operation 8 times. Step S3 can be refined as follows: using a heating method to melt the blade wax mold and the runner wax mold inside the ceramic slurry, realizing a dewaxing process, and further firing to form a casting mold for a gas turbine blade.

[0086] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for wax pattern welding, comprising: Operating table (1); A first bracket (2), mounted on the operating table (1), and suitable for placing a blade wax mold (6) for forming a gas turbine blade model; A second bracket (3) is mounted on the operating table (1) and is suitable for placing a runner wax mold (7) for forming a runner for injecting casting molten metal into the gas turbine blade model; at least one hot melt portion (4), installed on the operating table (1), and configured to be able to partially extend above the runner wax mold (7) and melt the position of the runner wax mold (7) to be welded; as well as A gripping portion (5) is mounted on the operating table (1) and is suitable for gripping the blade wax model (6) and moving the blade wax model (6) to a position to be welded of the runner wax model (7), so that the blade wax model (6) is solidified at the position to be welded, so as to form a casting mold having a gas turbine blade model and a runner coupled to the model.

2. The device for wax pattern welding according to claim 1, wherein: Each of the hot melt parts (4) comprises: A drive assembly (41) mounted on the operating table (1); and The hot melt component (42) is mounted on the driving component (41) and, driven by the driving component (41), reciprocates in a straight line in the height direction and the lateral direction to approach or move away from the upper side of the runner wax mold (7).

3. The device for wax pattern welding according to claim 2, wherein: The driving assembly (41) comprises: A first drive seat (411) is mounted on the operating table (1) and is configured such that the output end can move linearly and reciprocatingly in a transverse direction; and The second drive seat (412) is mounted on the output end of the first drive seat (411), and the hot melt assembly (42) is mounted on the output end of the second drive seat (412). The second drive seat (412) is configured so that the output end can move linearly and reciprocatingly in the height direction.

4. The device for wax pattern welding according to claim 3, wherein: The first driving seat (411) comprises: A first base (4111) is mounted on the operating table (1); and The first cylinder (4112) is installed on the first base (4111), and the output end of the first cylinder (4112) extends in the transverse direction and is connected to the second drive seat (412) through a connecting member to drive the second drive seat (412) to move reciprocatingly in a transverse direction.

5. The device for wax pattern welding according to claim 3, wherein: The second drive seat (412) comprises: A second base (4121) is mounted on the output end of the first drive base (411) and is driven by the first drive base (411) to reciprocate linearly in a transverse direction; and The second cylinder (4122) is installed on the second base (4121), and the output end of the second cylinder (4122) extends in the height direction and is connected to the hot melt component (42) through a connecting piece to drive the hot melt component (42) to move reciprocatingly in a straight line in the height direction.

6. The device for wax pattern welding according to claim 2, wherein: The second bracket (3) is configured to be able to drive the sprue wax mold (7) to rotate in a horizontal plane; the hot melt assembly (42) comprises: A support frame (421) mounted on the driving assembly (41); and The hot melt component (422) is installed on the support frame (421) and is constructed in a roughly rectangular shape. Driven by the driving component (41), it moves to the position to be welded of the runner wax mold (7) to melt the position to be welded.

7. The device for wax pattern welding according to claim 6, wherein: The second bracket (3) comprises: A support base (31) mounted on the operating table (1); A rotating assembly (32) is rotatably mounted inside the support seat (31) and the upper portion thereof extends out of the support seat (31), and is suitable for placing the runner wax mold (7); and The limiting member (33) is mounted on the support seat (31) and surrounds the outside of the rotating assembly (32), and is suitable for guiding the runner wax mold (7) to rotate in a horizontal plane.

8. The device for wax pattern welding according to claim 2, wherein: The hot melt assembly (42) comprises: A support frame (421) mounted on the driving assembly (41); and The hot melt component (422) is installed on the support frame (421) and is constructed in a roughly circular shape. Under the drive of the driving component (41), it moves to the edge of the upper surface of the runner wax mold (7) to melt the edge of the upper surface of the runner wax mold (7).

9. The device for wax pattern welding according to claim 1, wherein: The gripping portion (5) comprises: A mechanical arm (51) is configured such that the end thereof can rotate in a horizontal plane and in a longitudinal vertical plane, so that the end of the mechanical arm (51) can approach or move away from the upper side of the first bracket (2) and the upper side of the second bracket (3); and At least one grasping assembly (52) is installed at the end of the mechanical arm (51) and is configured to grasp the blade wax mold (6) placed on the first bracket (2) and place the blade wax mold (6) at a position to be welded on the runner wax mold (7).

10. The device for wax pattern welding according to claim 9, wherein: Each of the grabbing components (52) comprises: A mounting bracket (521) mounted at the end of the mechanical arm (51); a third cylinder (522), mounted on the mounting bracket (521); and A pair of clamping heads (523) are respectively mounted on two output ends located at both ends of the third cylinder (522) extending in the lateral direction. Driven by the third cylinder (522), the two clamping heads (523) move closer to or away from each other to clamp or release the blade wax model (6).

11. The device for wax pattern welding according to claim 10, wherein: Each pair of the clamping heads (523) is constructed as two substantially L-shaped clamping pieces (5233) facing each other; or, Each of the clamping heads (523) includes a base block (5231) and a clamping claw (5232) mounted on the lower end of the base block (5231), and the base block (5231) is mounted on the output end of the third cylinder (522).

12. A method for manufacturing a casting mold, comprising: Using the wax model welding device described in any one of claims 1 to 11, the blade wax model is welded to the position to be welded of the runner wax model; Coating the ceramic slurry on the exterior of the blade wax mold and the runner wax mold combined with each other to form a ceramic coating; as well as The ceramic cladding is fired to melt the blade wax mold and the runner wax mold inside the ceramic slurry to form a casting mold for the gas turbine blade.

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